CN112953195A - Charging device, charging control method, charging control device, and readable storage medium - Google Patents
Charging device, charging control method, charging control device, and readable storage mediumDownload PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/14—Arrangements for reducing ripples from DC input or output
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from AC mains by converters
- H02J7/04—Regulation of charging current or voltage
- H02J7/06—Regulation of charging current or voltage using discharge tubes or semiconductor devices
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
Translated fromChinese
Description
Technical Field
The application belongs to the technical field of intelligent charging, and particularly relates to a charging device, a charging control method, a charging control device and a readable storage medium.
Background
In the related art, the quick charging technology greatly improves the charging experience. However, as the charging Power increases, the requirement for harmonic suppression also becomes stricter, so that the conventional "fast charging" charging device is generally provided with a Power Factor Control (PFC) module.
The PFC module has a large volume and a high cost, which causes a high price of the "fast charging" charging device and is not suitable for a miniaturized design.
How to effectively suppress harmonics without using a PFC module is a technical problem to be solved.
Disclosure of Invention
The present application is directed to an electric device, a control method and a control device for a charging device, and a storage medium, which can effectively suppress harmonics of the charging device without using a PFC module.
In a first aspect, an embodiment of the present application provides a charging apparatus, configured to charge an electric device, including:
the rectification module is used for rectifying the accessed electric signal to obtain a rectified input signal;
the power conversion module is used for adjusting the power of the input signal and outputting an adjusted charging signal;
the voltage detection module is connected with the rectification module and used for detecting the change trend of the voltage value of the input signal;
the current detection module is connected with the power conversion module and used for detecting the change trend of the current value of the input signal;
and the logic control module is connected with the voltage detection module and the power conversion module and is used for controlling the power conversion module to adjust the current value of the charging signal according to the change trend of the voltage value so as to enable the change trend of the current value to be matched with the change trend of the voltage value.
In a second aspect, an embodiment of the present application provides a charging control method for controlling a charging apparatus according to the first aspect, where the method includes:
acquiring a variation trend of a voltage value of an input signal;
and adjusting the current value of the charging signal according to the variation trend of the voltage value so as to match the variation trend of the current value with the variation trend of the voltage value.
In a third aspect, an embodiment of the present application provides a charging control apparatus for controlling the charging apparatus according to the first aspect, the apparatus including:
the acquisition unit is used for acquiring the variation trend of the voltage value of the input signal;
and the adjusting unit is used for adjusting the current value of the charging signal according to the variation trend of the voltage value so as to enable the variation trend of the current value to be matched with the variation trend of the voltage value.
In a fourth aspect, the present application proposes a readable storage medium having stored thereon a program or instructions which, when executed by a processor, implement the steps of the charging control method as proposed in the second aspect.
In an embodiment of the application, the charging device at least comprises a rectifying module, a power variation module, a voltage detection module and a logic control module. The rectifier module is used for rectifying the accessed alternating current commercial power to obtain a rectified direct current input signal. After the direct current input signal is input to the power change module, the power of the input signal is adjusted through the power conversion module to obtain an adjusted charging signal, and the electric equipment is charged through the charging signal.
The waveform of the input voltage is detected in real time through the voltage detection module, so that the variation trend of the voltage value of the input signal is obtained, for example, the variation trend of the voltage value of the input signal is an increasing trend or a decreasing trend. Meanwhile, the current detection module detects the change trend of the current value of the input signal in real time, for example, the change trend of the current value of the input signal is an increasing trend or a decreasing trend.
For example, in one sampling period, 2 sampling values, a and B, respectively, are collected. If A > B is satisfied, the variation tendency of the voltage value or the current value is determined to be a falling tendency. If A < B is satisfied, it is determined that the change tendency of the current value or the voltage value is an ascending tendency.
Furthermore, the logic control module controls the power conversion module to change the working state according to the change trend of the voltage value of the input signal, and detects the current signal of the input signal of the power conversion module in real time, so that the change trend of the current value of the input signal is matched with the change trend of the voltage value of the input signal, after the phase of the current waveform and the phase of the voltage waveform of the input signal are synchronous, harmonic interference can be effectively reduced, and the power factor is favorably improved.
By applying the embodiment provided by the application, the voltage value of the input signal is detected in real time, so that the change trend (waveform) of the voltage value of the input signal is obtained, and the change trend of the current value of the input signal is detected in real time, wherein the logic control module can continuously acquire the voltage value of the input signal according to a set period, and judge whether the change trend of the voltage value and the current value is an increasing trend or a decreasing trend according to adjacent two sampling results. The working state of the power conversion module is adjusted according to the variation trend of the voltage value, so that the current variation trend of the input signal is matched with the voltage variation trend, namely the waveform of the current value is synchronous with the waveform phase of the voltage value, the harmonic wave of the charging device can be effectively reduced, the power factor is improved, the requirements of high-power fast charging on the harmonic wave and the power factor are met on the premise of not arranging a PFC (power factor correction) module, the manufacturing cost of the charging device meeting the requirements of fast charging is reduced, and the miniaturization of the charging device is facilitated.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 shows a schematic structural diagram of a charging device according to an embodiment of the present application;
fig. 2 shows one of the flowcharts of a charge control method according to an embodiment of the present application;
fig. 3 shows a second flowchart of a charge control method according to an embodiment of the present application;
FIG. 4 illustrates waveforms of voltage and current of an input signal according to an embodiment of the present application;
fig. 5 is a block diagram showing a configuration of a charge control device according to an embodiment of the present application.
Reference numerals:
the device comprises acharging device 100, a rectifyingmodule 102, apower conversion module 104, avoltage detection module 106, alogic control module 108, acurrent detection module 110, aport module 112, anoutput control module 114, asignal transmission module 116, afeedback module 118, adriving module 120, asignal receiving module 122, afirst filtering module 124, asecond filtering module 126, athird filtering module 128 and anauxiliary module 130.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The features of the terms first and second in the description and in the claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specified. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
A charging device, a charging control method, a charging control device, and a readable storage medium according to embodiments of the present application are described below with reference to fig. 1 to 5.
In some embodiments of the present application, a charging device is provided, and fig. 1 shows a schematic structural diagram of a charging device according to an embodiment of the present application, and as shown in fig. 1, the charging device includes:
therectification module 102 is used for accessing commercial power and rectifying the commercial power to obtain a rectified input signal;
apower conversion module 104, configured to adjust power of an input signal and output an adjusted charging signal;
thevoltage detection module 106 is connected with therectification module 102 and is used for detecting the variation trend of the voltage value of the input signal;
thecurrent detection module 110 is connected with thepower conversion module 104 and is used for detecting the variation trend of the current value of the input signal;
and thelogic control module 108 is connected to thevoltage detection module 106 and thepower conversion module 104, and is configured to control the power variation module to adjust the current value of the charging signal according to the variation trend of the voltage value, so that the variation trend of the current value matches the variation trend of the voltage value.
In an embodiment of the present application, thecharging device 100 includes at least arectification module 102, a power variation module, avoltage detection module 106, and alogic control module 108. Therectifier module 102 rectifies the ac mains supply to obtain a rectified dc input signal. After the input signal of the direct current is input to the power change module, the power of the input signal is adjusted by thepower conversion module 104 to obtain an adjusted charging signal, and the electric device is charged by the charging signal.
Thevoltage detection module 106 detects the waveform of the input voltage in real time, so as to obtain a variation trend of the voltage value of the input signal, for example, the variation trend of the voltage value of the input signal is an increasing trend or a decreasing trend. Meanwhile, thecurrent detection module 110 detects a variation trend of the current value of the input signal in real time, such as an increasing trend or a decreasing trend of the variation trend of the current value of the input signal.
For example, in one sampling period, 2 sampling values, a and B, respectively, are collected. If A > B is satisfied, the variation tendency of the voltage value or the current value is determined to be a falling tendency. If A < B is satisfied, it is determined that the change tendency of the current value or the voltage value is an ascending tendency.
Further, thelogic control module 108 controls thepower conversion module 104 to change the operating state according to the variation trend of the voltage value of the input signal, and detects the current signal of the input signal of thepower conversion module 104 in real time, so that the variation trend of the current value of the input signal matches with the variation trend of the voltage value of the input signal, and after the phases of the current waveform and the voltage waveform of the input signal are synchronized, the harmonic interference can be effectively reduced, which is beneficial to improving the power factor.
By applying the embodiment provided by the application, the voltage value of the input signal is detected in real time, so that the variation trend (waveform) of the voltage value of the input signal is obtained, the variation trend of the current value of the input signal is detected in real time, and the working state of thepower conversion module 104 is adjusted according to the variation trend of the voltage value, so that the variation trend of the current of the input signal is matched with the variation trend of the voltage, that is, the waveform of the current value is synchronous with the waveform of the voltage value in phase, so that the harmonic wave of thecharging device 100 can be effectively reduced and the power factor can be improved, the requirements of high-power fast charging on the harmonic wave and the power factor can be met on the premise of not setting a PFC module, the manufacturing cost of thecharging device 100 meeting the requirement of fast charging is reduced.
In some embodiments of the present application, the chargingdevice 100 further comprises: aport module 112 for connecting the electric device to transmit and receive signals;
the signal transceiving module specifically comprises asignal sending module 116 connected with thelogic control module 108;
afeedback module 118 connected to thesignal transmitting module 116;
theoutput control module 114 is connected with thefeedback module 118 and theport module 112, and is configured to generate a first request signal when the change trend of the voltage value is a decreasing trend, and send the first request signal to the electric device through theport module 112 so as to decrease the power taking power of the electric device; and generating a second request signal under the condition that the change trend of the voltage value is an increasing trend, and sending the second request signal to the electric equipment through theport module 112 so as to boost the electricity taking power by using the electric equipment.
In this embodiment, the chargingdevice 100 includes theport module 112, and the electric device can establish an electrical connection with the charging device through theport module 112, so as to receive a charging signal of the charging device to perform charging, and meanwhile, the chargingdevice 100 and the electric device can also perform other data instruction interaction through theport module 112, such as establishing a connection according to a charging protocol, transmitting a request signal, getting an electric signal, and the like.
The chargingdevice 100 further includes asignal sending module 116 and afeedback module 118, and thesignal sending module 116 implements data command communication between thelogic control module 108 and thefeedback module 118, and further implements data transmission between thelogic control module 108 and theoutput control module 114 via thefeedback module 118.
Specifically, when thelogic control module 108 adjusts the current value of the input signal by adjusting the operation mode of the power conversion module, so that the phases of the current value and the voltage value of the input signal are the same, since the voltage of the input signal changes with the waveform of the utility power and the voltage waveform of the charging signal output by the power conversion module is the same as the voltage waveform of the input signal, after the current of the input signal is adjusted, the current waveform of the output charging signal changes accordingly, and therefore the power of the charging signal also changes accordingly.
That is, adjusting the operating mode of the power conversion module actually adjusts the power of the charging signal. Therefore, when thelogic control module 108 controls thepower conversion module 104 to change the operating state thereof according to the variation trend of the voltage value of the input signal, the logic control module generates a corresponding request signal, and transmits the request signal to the electric device through thesignal transmission module 116, thefeedback module 118 and theport module 112 in sequence, and when the electric device receives the request signal, the electric device synchronously adjusts the power to match the power of the electric device with the charging power of thecharging device 100, so that the operating efficiency of thecharging device 100 can be ensured.
Specifically, theoutput control module 114 obtains the voltage value variation trend collected by thelogic control module 108 through thefeedback module 118 and thesignal sending module 116. If the change trend of the voltage value is a decreasing trend, the voltage waveform of the input signal moves to a wave trough, and after the change trend of the input current value is adjusted to be synchronous with the change trend, the voltage value and the current value of the output charging signal are also in a decreasing trend, so that the power of the output charging signal is also decreased synchronously. Therefore, a first request signal is generated at this time and is sent to the electric device through theport module 112, and the electric device is requested to reduce the power taking power so that the power taking power of the electric device is matched with the charging power of the charging device.
Similarly, if the variation trend of the voltage value is an increasing trend, the power of the charging signal is also an increasing trend, so that a second request signal is generated and sent to the electric equipment through theport module 112, and the electric equipment is requested to increase the electric power, so that the power taking power of the electric equipment is matched with the charging power of the charging equipment, and the working efficiency of thecharging device 100 can be ensured.
In some embodiments of the present application, the chargingdevice 100 further comprises: and thedriving module 120 is connected with thelogic control module 108 and thepower conversion module 104, and thedriving module 120 is used for driving thepower conversion module 104 to operate.
In the embodiment of the present application, the chargingdevice 100 further includes adriving module 120, and thedriving module 120 is connected to thelogic control module 108 and the power conversion module. During the operation of thecharging device 100, thelogic control module 108 generates a corresponding control signal according to the voltage value of the input signal detected in real time, and controls thedriving module 120 to drive thepower conversion module 104 to operate through the control signal, so as to change the operating state of thepower conversion module 104.
Specifically, when the trend of the voltage value of the input signal is a decreasing trend, thedriving module 120, under the control of thelogic control module 108, drives thepower conversion module 104 to output the charging signal with lower power, so that the trend of the current value of the input signal of thepower conversion module 104 is the same as the trend of the voltage value.
When the variation trend of the voltage value of the input signal is an increasing trend, thedriving module 120 drives thepower conversion module 104 to output a charging signal with higher power under the control of thelogic control module 108, so that the variation trend of the current value of the input signal of thepower conversion module 104 is the same as the variation trend of the voltage value, and the working efficiency of thecharging device 100 can be ensured.
In some embodiments of the present application, the chargingdevice 100 further comprises:
the signal transceiver module specifically includes asignal receiving module 122 connected to theport module 112, theoutput control module 114, and thelogic control module 108;
theport module 112 is further configured to receive a power taking signal sent by the electric device;
thelogic control module 108 obtains the power-taking signal through thesignal receiving module 122, and controls thedriving module 120 to operate according to the power-taking signal.
In this embodiment, the chargingdevice 100 further includes asignal receiving module 122, thesignal receiving module 122 is disposed in parallel with thesignal sending module 116, and is connected to theport module 112, theoutput control module 114 and thelogic control module 108, and thesignal receiving module 122 is responsible for receiving signals from theport module 112 to theoutput control module 114, then to thefeedback module 118, and then to thelogic control module 108, and similarly, thesignal sending module 116 is responsible for sending signals from thelogic control module 108 to thefeedback module 118, then to theoutput control module 114, and then to theport module 112.
Further, theport module 112 receives a power-taking signal sent by the electric device, where the power-taking signal corresponds to a request signal sent by the chargingapparatus 100 to the electric device, that is, after thecharging apparatus 100 sends a request for reducing or increasing power-taking to the electric device, the electric device may reduce or increase its power-taking power according to the received request signal, generate a corresponding feedback signal, that is, the power-taking signal, and send the feedback signal to thecharging apparatus 100.
After receiving the power-taking signal, the chargingdevice 100 combines the received power-taking signal with the voltage signal acquired by itself through theoutput control module 114 and thefeedback module 118, and sends the voltage signal to thelogic control module 108, and thelogic control module 108 controls thedriving module 120 to drive thepower conversion module 104 according to the received voltage signal and the power-taking signal, so as to change the working state of thepower conversion module 104, specifically, change the power of the charging signal output by the power conversion module, so as to match the voltage variation trend of the input signal with the current variation trend.
The working state of thepower conversion module 104 is adjusted according to the variation trend of the voltage value, so that the current variation trend of the input signal is matched with the voltage variation trend, that is, the waveform of the current value is synchronous with the waveform of the voltage value, thus effectively reducing the harmonic of thecharging device 100 and improving the power factor, meeting the requirements of high-power fast charging on the harmonic and the power factor on the premise of not arranging a PFC module, being beneficial to reducing the manufacturing cost of thecharging device 100 meeting the requirement of fast charging, and being beneficial to the miniaturization of thecharging device 100.
In some embodiments of the present application, the power-taking signal includes a first power-taking signal sent by the electric device according to the first request signal, or a second power-taking signal sent by the electric device according to the second request signal;
theoutput control module 114 is further configured to generate a first power signal if the trend of the voltage value changes is a decreasing trend, and generate a second power signal if the trend of the voltage value changes is an increasing trend;
thelogic control module 108 is further configured to generate a first control signal according to the first power taking signal when receiving the first power signal, and control thedriving module 120 according to the first control signal, so that thedriving module 120 drives thepower conversion module 104 to reduce the power of the charging signal; or in the case of receiving the second power signal, generating a second control signal according to the second power-taking signal, and controlling thedriving module 120 by the second control signal, so that thedriving module 120 drives thepower conversion module 104 to increase the power of the charging signal.
In an embodiment of the present application, the power-taking signal includes a first power-taking signal and a second power-taking signal. When the electric equipment receives the first request signal, namely the signal requesting the electric equipment to reduce the power taking power, the electric equipment responds to the first request signal to reduce the power taking power of the electric equipment, and specifically, the power taking power can be reduced by a certain numerical value (for example, reduced by 0.5W to 5W) according to a set rule, and a corresponding first power taking signal is generated according to the reduced power taking power.
Similarly, after the electric equipment receives the second request signal, the electric power taking power of the electric equipment is increased, and the corresponding second electric power taking signal is generated according to the increased electric power taking power.
For thecharging device 100, theoutput control module 114 generates a corresponding power signal according to the variation trend of the voltage value, specifically, generates a first power signal when the variation trend of the voltage value is a decreasing trend, the first power signal is used for enabling thelogic control module 108 to control thedriving module 120, and finally, thepower conversion module 104 decreases the power of the output charging signal, so that the current phase of the input signal matches the voltage phase, even if the variation trend of the input current matches the variation trend of the input voltage.
Similarly, when the variation trend of the voltage value is an increasing trend, the second power signal is generated, so that thepower conversion module 104 increases the power of the output charging signal, and it is ensured that the variation trends of the input current and the input voltage are matched.
According to the embodiment of the application, the value of the input voltage is sampled in real time, and the change of the output power is dynamically controlled, so that the input current and the input voltage are synchronous, and the harmonic wave of the whole charging equipment is not influenced by the primary side filter module. In the whole working period, the power supply does not need an additional PFC control module and a large capacitor as a filtering module, so that the volume and the cost of the charging equipment are greatly reduced, and meanwhile, the efficiency of the power supply equipment is higher because the power supply does not have the loss of the PFC module.
In some embodiments of the present application, as shown in fig. 1, the chargingdevice 100 further includes:
thefirst filtering module 124 is disposed between the rectifyingmodule 102 and thepower converting module 104, and is configured to filter the input signal; and/or
Thesecond filtering module 126 is disposed between thepower conversion module 104 and theport module 112, and is configured to filter the charging signal.
In this embodiment, the chargingdevice 100 is provided with afirst filtering module 124 and asecond filtering module 126, wherein thefirst filtering module 124 is located after therectifying module 102 and before thepower converting module 104, and thefirst filtering module 124 can filter the rectified mains signal, so as to remove a clutter signal in the mains signal. Thesecond filtering module 126 is located after thepower conversion module 104 and before theport module 112, and is configured to filter the charging signal after thepower conversion module 104 converts the power, so as to reduce the ripple of the charging signal and improve the power supply quality of thecharging device 100.
Thefirst filtering module 124 and thesecond filtering module 126 are each provided with an energy storage device, such as a capacitor, for filtering out noise in the signal. It can be understood that, since the power of the charging signal is dynamically adjusted according to the voltage waveform of the input signal in the embodiment of the present application, when the variation trend of the voltage of the input signal is a decreasing trend, the power of the charging signal is synchronously decreased, and therefore, an additional PFC control module is not required, and capacitors with large capacity are not required to be disposed in thefirst filtering module 124 and thesecond filtering module 126, so that the size of thecharging device 100 is effectively reduced, which is beneficial to the miniaturization of thecharging device 100.
In some embodiments of the present application, the chargingdevice 100 further comprises: theauxiliary module 130 is connected with thelogic control module 108 and used for supplying power to thelogic control module 108; thethird filtering module 128 is disposed at the input end of therectifying module 102, and is configured to filter the mains supply; thethird filtering module 128 is an electromagnetic interference filtering module.
In the embodiment of the present application, the chargingdevice 100 includes anauxiliary module 130, and theauxiliary module 130 can supply power to a chip such as thelogic control module 108. Specifically, after thecharging device 100 is powered on, theauxiliary module 130 starts to store electric energy, and when the voltage value of theauxiliary module 130 satisfies the power supply voltage of the chip such as thelogic control module 108, each control module is powered on and started.
Further, athird filtering module 128 is disposed at an input end of therectifying module 102, wherein thethird filtering module 128 may be specifically configured as an Electromagnetic Interference (EMI) filtering module. Through setting upthird filtering module 128, can further filter the clutter in the electric wire netting, reduce electromagnetic interference, improve the rate of accuracy of signal sampling.
In some embodiments of the present application, there is provided a charging control method for controlling a charging device as in any of the above embodiments, fig. 2 shows one of flowcharts of the charging control method according to an embodiment of the present application, and as shown in fig. 2, the control method includes:
and 204, adjusting the current value of the charging signal according to the variation trend of the voltage value, so that the variation trend of the current value of the input signal is matched with the variation trend of the voltage value of the input signal.
In the embodiment of the present application, the waveform of the input voltage is detected in real time, so as to obtain the variation trend of the voltage value of the input signal, for example, the variation trend of the voltage value of the input signal is an increasing trend or a decreasing trend. Meanwhile, the variation trend of the current value of the input signal is detected in real time, such as the variation trend of the current value of the input signal is an increasing trend or a decreasing trend.
For example, in one sampling period, 2 sampling values, a and B, respectively, are collected. If A > B is satisfied, the variation tendency of the voltage value or the current value is determined to be a falling tendency. If A < B is satisfied, it is determined that the change tendency of the current value or the voltage value is an ascending tendency.
Further, the current value of the charging signal, that is, the power of the charging signal, is dynamically adjusted according to the variation trend of the voltage value of the input signal, so that the variation trend of the current value of the input signal matches the variation trend of the voltage value of the input signal, that is, the voltage phase of the input signal is the same as the current phase of the input signal.
The embodiment provided by the application obtains the change trend (waveform) of the voltage value of the input signal by detecting the voltage value of the input signal in real time, and detects the change trend of the current value of the input signal in real time, and adjusts the working state of the power conversion module in the charging device according to the change trend of the voltage value, so that the change trend of the current of the input signal is matched with the change trend of the voltage, namely the waveform of the current value is synchronous with the waveform of the voltage value in phase, therefore, the harmonic wave of the charging device can be effectively reduced, the power factor is improved, the requirements of high-power fast charging on the harmonic wave and the power factor are met on the premise of not setting a PFC module, the manufacturing cost of the charging device meeting the requirement of fast charging is reduced, and the miniaturization of the charging device is facilitated.
In some embodiments of the present application, fig. 3 shows a second flowchart of a charging control method according to an embodiment of the present application, and as shown in fig. 3, the charging control method includes:
and 304, generating a second request signal under the condition that the change trend of the voltage value is an increasing trend, and sending the second request signal to the electric equipment so as to adjust and boost the power according to the request signal by using the electric equipment.
In the embodiment of the present application, when the logic control module adjusts the current value of the input signal by adjusting the current value of the charging signal output by the power conversion module, so that the phases of the current value and the voltage value of the input signal are the same, since the voltage of the input signal changes with the waveform of the utility power and the voltage waveform of the charging signal output by the power conversion module is the same as the voltage waveform of the input signal, after the current of the input signal is adjusted, the current waveform of the output charging signal changes accordingly, and thus the power of the charging signal changes accordingly.
That is, adjusting the operating mode of the power conversion module actually adjusts the power of the charging signal. Therefore, when the logic control module controls the power conversion module according to the variation trend of the voltage value of the input signal to change the working state of the power conversion module, the corresponding request signal is generated and sequentially passes through the signal transceiving module, the feedback module and the port module, the request signal is sent to the electric equipment, and when the electric equipment receives the request signal, the electric power is synchronously adjusted to match the electric power of the electric equipment with the charging power of the charging device, so that the working efficiency of the charging device can be ensured.
Specifically, if the trend of the voltage value changes to a decreasing trend, which indicates that the voltage waveform of the input signal moves to a valley, after the trend of the input current value changes is adjusted to be synchronous with the trend, the voltage value and the current value of the output charging signal also have a decreasing trend, and therefore the power of the output charging signal also decreases synchronously. Therefore, a first request signal is generated at the moment and is sent to the electric equipment through the port module, the electric equipment is requested to reduce the electricity taking power, and the electricity taking power of the electric equipment is matched with the charging power of the charging equipment.
Similarly, if the trend of the voltage value change is an increasing trend, the power of the charging signal also is an increasing trend, so that a second request signal is generated and sent to the electric equipment through the port module, the electric equipment is requested to increase the electric power, the electric power obtained by the electric equipment is matched with the charging power of the charging equipment, and the working efficiency of the charging device can be ensured.
In some embodiments of the present application, adjusting the current value of the charging signal according to the trend of the voltage value variation includes:
receiving a first power-taking signal sent by the electric equipment according to the first request signal or a second power-taking signal sent by the electric equipment according to the second request signal;
under the condition that the change trend of the voltage value is a reduction trend, controlling the charging device to reduce the current value of the charging signal according to the first power taking signal;
and under the condition that the change trend of the voltage value is an increasing trend, controlling the charging device to increase the current value of the charging signal according to the second power taking signal.
In the embodiment of the application, if the variation trend of the voltage value is a decreasing trend, a first power signal is generated, and the first power signal is used for decreasing the current value of the charging signal, so that the purpose of decreasing the power of the charging signal is achieved. Specifically, when the trend of the voltage value change is a decreasing trend, the first request signal is first generated, and the first power signal is generated. The first request signal is sent to the electric equipment, and the electric equipment reduces the electricity taking current of the electric equipment according to the first request signal, namely reduces the electricity taking power of the electric equipment.
After the power-taking current (power) of the electric equipment is reduced, a corresponding first power-taking signal is sent to the charging device, and the charging device starts to reduce the current value of the charging signal under the condition that the first power-taking signal and the first power-taking signal are obtained simultaneously.
Wherein the magnitude of the decrease in the current value is related to the magnitude of the decrease in the voltage value of the input signal.
Similarly, if the change trend of the voltage value is an increasing trend, a second power signal is generated, and the second power signal is used for increasing the current value of the charging signal, so that the purpose of increasing the power of the charging signal is achieved. Specifically, when the trend of the change in the voltage value is an increasing trend, the second request signal is first generated, and the second power signal is generated. And the second request signal is sent to the electric equipment, and the electric equipment raises the power taking current thereof according to the second request signal, namely raises the power taking power thereof.
After the power-taking current (power) of the electric equipment is increased, a corresponding second power-taking signal is sent to the charging device, and the charging device starts to increase the current value of the charging signal under the condition that the second power signal and the second power-taking signal are obtained simultaneously.
Wherein the magnitude of the increase in the current value is related to the magnitude of the increase in the voltage value of the input signal.
In some embodiments of the present application, a specific workflow of a charging device is described.
In this embodiment of the present application, a charging-power-taking system is formed between the charging device and the electric device, and in this charging-power-taking system, three functional units may be specifically included:
the device comprises a power unit, a control unit and a power utilization unit.
The power unit comprises the rectification module, a power conversion module, an output control module, a port module, a feedback module, a first filtering module, a second filtering module and a third filtering module.
The control unit comprises a voltage detection module, an auxiliary module, a driving module, a current detection module, a signal transceiving module and a logic control module.
In the working process of the charging device, the voltage detection module detects the voltage value of the input signal in real time and sends the voltage information to the signal transceiving module.
The signal transceiver module sends the voltage information to the output control module through the feedback module.
The output control module requests the extraction value of the terminal power according to a preset program, and simultaneously requests the logic control module to control the power output of the power change module through the feedback module and the signal transceiving module.
By such a dynamic power control method, the output power is made to vary according to the voltage cycle. Increasing the output power when the voltage rises; when the voltage is reduced, the power output is reduced. The current value is increased along with the increase of the voltage and is reduced along with the reduction of the voltage, the power factor value is improved, and the harmonic interference is reduced. Meanwhile, as a separate PFC module and a large-capacitance filtering module are not needed, the volume of the charging equipment becomes very small.
The method comprises the following specific steps:
and 001, when the power supply is started, after the electric energy passes through the rectifier module, the electric energy supplies power to the auxiliary module on the primary side, and after the voltage value of the auxiliary module reaches the starting voltage value of the control unit, all modules in the control unit start to work.
And step 002, after the control unit is started, the voltage detection module detects the voltage waveform passing through the rectification module in real time and sends the information to the signal transceiver module. Meanwhile, the current detection module transmits a current signal to the logic control module.
The logic control module controls the power conversion module to operate according to a set rule.
And step 003, the signal transceiver module sends the voltage signal to the output control module through the feedback module.
Step 004, the output control module sends the request signal to the electric equipment (such as a mobile phone) through the port module so as to adjust the power (current) obtained by the electric equipment. Meanwhile, the output control module requests the primary side to output power according to a preset program.
Step 0041, the output control module sends the power signal to the signal transceiver module of the control unit through the feedback module.
And 0042, the signal receiving module sends the received signal to the primary logic control module.
And 0043, the logic control module controls the power of the charging signal output by the power conversion module through the driving module.
And 005, feeding back related signals to the output control module through the port according to the signal of the output control module and the current value corresponding to the power taking signal by the power terminal.
Step 006, the charging signal output by the power conversion module meets the voltage and current requirements of the power utilization terminal after passing through the output rectifying and filtering module.
Fig. 4 shows waveforms of voltage and current of an input signal according to an embodiment of the present application, and since a change in power (current) of an output charging signal is controlled, a change in power of the output signal is small, and a corresponding current curve I and a corresponding power curve Q are similar. The change trends of the corresponding input current curve and the corresponding input voltage curve are basically the same.
According to the embodiment of the application, the value of the input voltage is sampled in real time, and the change of the output power is dynamically controlled, so that the input current and the input voltage are synchronous, and the harmonic wave of the whole charging equipment is not influenced by the primary side filter module. In the whole working period, the power supply does not need an additional PFC control module and a large capacitor as a filtering module, so that the volume and the cost of the charging equipment are greatly reduced, meanwhile, the power supply does not have the loss of the PFC module, and the efficiency of the power supply equipment is higher.
In some embodiments of the present application, a charging control device is provided for controlling a charging device in any of the above embodiments, fig. 5 shows a block diagram of a charging control device according to an embodiment of the present application, and as shown in fig. 5, the chargingcontrol device 500 includes:
an obtainingunit 502 for obtaining a variation trend of a voltage value of the input signal;
the adjustingunit 504 is configured to adjust the current value of the charging signal according to the variation trend of the voltage value, so that the variation trend of the current value of the input signal matches the variation trend of the voltage value of the input signal.
In the embodiment of the present application, the waveform of the input voltage is detected in real time, so as to obtain the variation trend of the voltage value of the input signal, for example, the variation trend of the voltage value of the input signal is an increasing trend or a decreasing trend. Meanwhile, the variation trend of the current value of the input signal is detected in real time, such as the variation trend of the current value of the input signal is an increasing trend or a decreasing trend.
For example, in one sampling period, 2 sampling values, a and B, respectively, are collected. If A > B is satisfied, the variation tendency of the voltage value or the current value is determined to be a falling tendency. If A < B is satisfied, it is determined that the change tendency of the current value or the voltage value is an ascending tendency.
Further, the current value of the charging signal, that is, the power of the charging signal, is dynamically adjusted according to the variation trend of the voltage value of the input signal, so that the variation trend of the current value of the input signal matches the variation trend of the voltage value of the input signal, that is, the voltage phase of the input signal is the same as the current phase of the input signal.
The embodiment provided by the application obtains the change trend (waveform) of the voltage value of the input signal by detecting the voltage value of the input signal in real time, and detects the change trend of the current value of the input signal in real time, and adjusts the working state of the power conversion module in the charging device according to the change trend of the voltage value, so that the change trend of the current of the input signal is matched with the change trend of the voltage, namely the waveform of the current value is synchronous with the waveform of the voltage value in phase, therefore, the harmonic wave of the charging device can be effectively reduced, the power factor is improved, the requirements of high-power fast charging on the harmonic wave and the power factor are met on the premise of not setting a PFC module, the manufacturing cost of the charging device meeting the requirement of fast charging is reduced, and the miniaturization of the charging device is facilitated.
In some embodiments of the present application, thecharge control device 500 includes:
agenerating unit 506, configured to generate a first request signal when the change trend of the voltage value is a decreasing trend, and send the first request signal to the electric device, so as to decrease the power taking power using the electric device;
the sendingunit 508 is configured to generate a second request signal when the change trend of the voltage value is an increasing trend, and send the second request signal to the electric device, so that the electric device is used to adjust the boost power according to the request signal.
In the embodiment of the present application, when the logic control module adjusts the current value of the input signal by adjusting the current value of the charging signal output by the power conversion module, so that the phases of the current value and the voltage value of the input signal are the same, since the voltage of the input signal changes with the waveform of the utility power and the voltage waveform of the charging signal output by the power conversion module is the same as the voltage waveform of the input signal, after the current of the input signal is adjusted, the current waveform of the output charging signal changes accordingly, and thus the power of the charging signal changes accordingly.
That is, adjusting the operating mode of the power conversion module actually adjusts the power of the charging signal. Therefore, when the logic control module controls the power conversion module according to the variation trend of the voltage value of the input signal to change the working state of the power conversion module, the corresponding request signal is generated and sequentially passes through the signal transceiving module, the feedback module and the port module, the request signal is sent to the electric equipment, and when the electric equipment receives the request signal, the electric power is synchronously adjusted to match the electric power of the electric equipment with the charging power of the charging device, so that the working efficiency of the charging device can be ensured.
Specifically, if the trend of the voltage value changes to a decreasing trend, which indicates that the voltage waveform of the input signal moves to a valley, after the trend of the input current value changes is adjusted to be synchronous with the trend, the voltage value and the current value of the output charging signal also have a decreasing trend, and therefore the power of the output charging signal also decreases synchronously. Therefore, a first request signal is generated at the moment and is sent to the electric equipment through the port module, the electric equipment is requested to reduce the electricity taking power, and the electricity taking power of the electric equipment is matched with the charging power of the charging equipment.
Similarly, if the trend of the voltage value change is an increasing trend, the power of the charging signal also is an increasing trend, so that a second request signal is generated and sent to the electric equipment through the port module, the electric equipment is requested to increase the electric power, the electric power obtained by the electric equipment is matched with the charging power of the charging equipment, and the working efficiency of the charging device can be ensured.
In some embodiments of the present application, the obtainingunit 502 is further configured to receive a first power taking signal sent by the electric device according to the first request signal or a second power taking signal sent according to the second request signal; the adjustingunit 504 is further configured to control the charging device to decrease the current value of the charging signal according to the first power taking signal when the change trend of the voltage value is a decreasing trend; and under the condition that the change trend of the voltage value is an increasing trend, controlling the charging device to increase the current value of the charging signal according to the second power taking signal.
In the embodiment of the application, if the variation trend of the voltage value is a decreasing trend, a first power signal is generated, and the first power signal is used for decreasing the current value of the charging signal, so that the purpose of decreasing the power of the charging signal is achieved. Specifically, when the trend of the voltage value change is a decreasing trend, the first request signal is first generated, and the first power signal is generated. The first request signal is sent to the electric equipment, and the electric equipment reduces the electricity taking current of the electric equipment according to the first request signal, namely reduces the electricity taking power of the electric equipment.
After the power-taking current (power) of the electric equipment is reduced, a corresponding first power-taking signal is sent to the charging device, and the charging device starts to reduce the current value of the charging signal under the condition that the first power-taking signal and the first power-taking signal are obtained simultaneously.
Wherein the magnitude of the decrease in the current value is related to the magnitude of the decrease in the voltage value of the input signal.
Similarly, if the change trend of the voltage value is an increasing trend, a second power signal is generated, and the second power signal is used for increasing the current value of the charging signal, so that the purpose of increasing the power of the charging signal is achieved. Specifically, when the trend of the change in the voltage value is an increasing trend, the second request signal is first generated, and the second power signal is generated. And the second request signal is sent to the electric equipment, and the electric equipment raises the power taking current thereof according to the second request signal, namely raises the power taking power thereof.
After the power-taking current (power) of the electric equipment is increased, a corresponding second power-taking signal is sent to the charging device, and the charging device starts to increase the current value of the charging signal under the condition that the second power signal and the second power-taking signal are obtained simultaneously.
Wherein the magnitude of the increase in the current value is related to the magnitude of the increase in the voltage value of the input signal.
In some embodiments of the present application, a readable storage medium is provided, on which a program or an instruction is stored, and the program or the instruction, when executed by a processor, implements the steps of the charging control method provided in any of the above embodiments, so that the readable storage medium also includes all the beneficial effects of the charging control method provided in any of the above embodiments, and in order to avoid repetition, details are not described herein again.
In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.
Claims (11)
1. A charging device for charging a powered device, comprising:
the rectification module is used for rectifying the accessed electric signal to obtain a rectified input signal;
the power conversion module is used for adjusting the power of the input signal and outputting an adjusted charging signal;
the voltage detection module is connected with the rectification module and used for detecting the change trend of the voltage value of the input signal;
the current detection module is connected with the power conversion module and used for detecting the change trend of the current value of the input signal;
and the logic control module is connected with the voltage detection module and the power conversion module and is used for controlling the power change module to adjust the working state according to the change trend of the voltage value so as to enable the change trend of the current value to be matched with the change trend of the voltage value.
2. The charging device according to claim 1, further comprising:
the port module is used for connecting the electric equipment to send and receive signals;
the signal transceiving module is connected with the logic control module;
the feedback module is connected with the signal transceiving module and the port module;
the output control module is connected with the feedback module and the port module and used for generating a first request signal under the condition that the change trend of the voltage value is a decreasing trend, and the first request signal is sent to the electric equipment through the port module so that the electric equipment can reduce the power of getting electricity; and
and generating a second request signal under the condition that the change trend of the voltage value is an ascending trend, and sending the second request signal to the electric equipment through the port module so that the electric equipment can improve the power taking power.
3. The charging device according to claim 2, further comprising:
and the driving module is connected with the logic control module and the power conversion module and is used for driving the power conversion module to work.
4. A charging device as claimed in claim 3, further comprising:
the signal transceiving module is connected with the port module, the output control module and the logic control module;
the port module is also used for receiving a power taking signal sent by the electric equipment;
the logic control module acquires the power-getting signal through the signal transceiving module and controls the driving module to work according to the power-getting signal.
5. The charging device according to claim 4, wherein the power-taking signal comprises a first power-taking signal sent by the electric equipment according to the first request signal, or a second power-taking signal sent by the electric equipment according to the second request signal;
the output control module is further used for generating a first power signal under the condition that the change trend of the voltage value is a decreasing trend, and generating a second power signal under the condition that the change trend of the voltage value is an increasing trend;
the logic control module is further configured to generate a first control signal according to the first power taking signal under the condition that the first power signal is received, and control the driving module through the first control signal, so that the driving module drives the power conversion module to reduce the power of the charging signal; or
And under the condition of receiving the second power signal, generating a second control signal according to the second power taking signal, and controlling the driving module through the second control signal so that the driving module drives the power conversion module to improve the power of the charging signal.
6. A charging arrangement as claimed in any of claims 2 to 5, further comprising:
the first filtering module is arranged between the rectifying module and the power conversion module and is used for filtering the input signal; and/or
And the second filtering module is arranged between the power conversion module and the port module and is used for filtering the charging signal.
7. A charge control method, characterized in that the method comprises:
acquiring a variation trend of a voltage value of an input signal;
and adjusting the current value of the charging signal according to the variation trend of the voltage value, so that the variation trend of the current value of the input signal is matched with the variation trend of the voltage value of the input signal.
8. The method of claim 7, further comprising:
generating a first request signal under the condition that the change trend of the voltage value is a decreasing trend, and sending the first request signal to electric equipment to enable the electric equipment to reduce the power taking power;
and generating a second request signal under the condition that the change trend of the voltage value is an increasing trend, and sending the second request signal to electric equipment so that the electric equipment can improve the power taking power.
9. The method of claim 8, further comprising:
receiving a first power taking signal sent by the electric equipment according to the first request signal or a second power taking signal sent by the electric equipment according to the second request signal;
the adjusting the current value of the charging signal according to the change trend of the voltage value comprises:
under the condition that the change trend of the voltage value is a decreasing trend, controlling the charging device to decrease the current value of the charging signal according to the first power taking signal;
and under the condition that the change trend of the voltage value is an increasing trend, controlling the charging device to increase the current value of the charging signal according to the second power taking signal.
10. A charge control device, characterized in that the device comprises:
the acquisition unit is used for acquiring the variation trend of the voltage value of the input signal;
and the adjusting unit is used for adjusting the current value of the charging signal according to the variation trend of the voltage value so as to enable the variation trend of the current value of the input signal to be matched with the variation trend of the voltage value of the input signal.
11. A readable storage medium on which a program or instructions are stored, which program or instructions, when executed by a processor, carry out the steps of the method according to any one of claims 7 to 9.
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