Disclosure of Invention
The embodiment of the application provides a vehicle-mounted charging system, which is beneficial to improving the integration degree and the intelligent degree of the vehicle-mounted charging system and reducing the weight of a vehicle body and the manufacturing cost.
An embodiment of the present application provides a vehicle-mounted charging system for a vehicle, the vehicle-mounted charging system including a control circuit, a wired charging circuit, a wireless charging circuit, and a power processing circuit, wherein,
The power processing circuit comprises a first converter and a transformer, one end of the first converter is connected with the wired charging circuit and the wireless charging circuit, the other end of the first converter is connected with the input end of the transformer, and the first converter is used for inputting a conversion voltage to the transformer;
The control circuit is respectively connected with the wired charging circuit, the wireless charging circuit and the power processing circuit, and is used for sending a first charging control signal to the wired charging circuit and a second charging control signal to the power processing circuit, and/or sending a third charging control signal to the wireless charging circuit and a fourth charging control signal to the power processing circuit;
the wired charging circuit is connected with the first converter, the wired charging circuit is used for sending a first electric signal to the first converter according to the first charging control signal, and the power processing circuit is used for stabilizing and filtering the first electric signal according to the second charging control signal;
The wireless charging circuit is connected with the first converter, the wireless charging circuit is used for sending a second electric signal to the first converter according to the third charging control signal, and the power processing circuit is used for carrying out current conversion, voltage stabilization and filtering on the second electric signal according to the fourth charging control signal.
In one embodiment, the power processing circuit further includes a second converter, one end of the second converter is connected to the output end of the transformer, and the other end of the second converter is connected to the vehicle-mounted battery.
In one embodiment, the wired charging circuit comprises a power factor correction circuit, one end of the power factor correction circuit is connected with an input current end, and the other end of the power factor correction circuit is connected with the power processing circuit;
the wireless charging circuit comprises a receiving coil, the receiving coil is connected with the first converter, and the receiving coil is used for receiving electromagnetic wave signals transmitted by the transmitting coil.
In one embodiment, the control circuit further includes a signal detection circuit for detecting whether the wired charging circuit has a first input signal, so that the control circuit sends the first charging control signal to the wired charging circuit according to the first input signal, and sends the second charging control signal to the power processing circuit.
In one embodiment, the signal detection circuit is further configured to detect whether the wireless charging circuit has a second input signal, so that the control circuit sends the third charging control signal to the wireless charging circuit according to the second input signal, and sends the fourth charging control signal to the power processing circuit.
In one embodiment, the transformer includes a primary winding and a secondary winding, the first converter is connected to the primary winding of the transformer, and the second converter is connected to the secondary winding of the transformer.
In one embodiment, the power processing circuit includes at least one switching tube, at least one diode, at least one inductor, and at least one capacitor.
The second aspect of the present application provides a charging control method, which is used for the vehicle-mounted charging system disclosed in the first aspect of the embodiment of the present application, and the charging control method includes:
According to the first input signal, a first charging control signal is sent to the wired charging circuit, and a second charging control signal is sent to the power processing circuit;
And controlling the wired charging circuit to provide a first electric signal for the power processing circuit according to the first charging control signal, and controlling the power processing circuit to stabilize and filter the first electric signal according to the second charging control signal.
In one embodiment, the charge control method further includes:
according to the second input signal, sending a third charging control signal to the wireless charging circuit, and sending a fourth charging control signal to the power processing circuit;
And controlling the wireless charging circuit to provide a second electric signal for the power processing circuit according to the third charging control signal, and controlling the power processing circuit to perform current conversion, voltage stabilization and filtering on the second electric signal according to a fourth charging control signal.
A third aspect of the present application provides a vehicle, which includes the vehicle-mounted charging system disclosed in the first aspect of the present application.
In the embodiment of the application, the vehicle-mounted charging system is used for a vehicle and comprises a control circuit, a wired charging circuit, a wireless charging circuit and a power processing circuit. The power processing circuit comprises a first converter and a transformer, one end of the first converter is connected with a wired charging circuit and a wireless charging circuit, the other end of the first converter is connected with the input end of the transformer, the first converter is used for inputting conversion voltage to the transformer, the control circuit is respectively connected with the wired charging circuit, the wireless charging circuit and the power processing circuit, the control circuit is used for sending a first charging control signal to the wired charging circuit and sending a second charging control signal to the power processing circuit, and/or sending a third charging control signal to the wireless charging circuit and sending a fourth charging control signal to the power processing circuit, the wired charging circuit is connected with the power processing circuit, the wired charging circuit is used for sending a first electric signal to the power processing circuit according to the first charging control signal, the power processing circuit is used for stabilizing and filtering the first electric signal according to the second charging control signal, the wireless charging circuit is connected with the power processing circuit, the power processing circuit is used for conducting current conversion and filtering to the second electric signal according to the fourth charging control signal, and/or sending a third charging control signal to the power processing circuit, on the vehicle-mounted charging circuit is beneficial to improving the quality of the integrated circuit, on-board and the vehicle-mounted system is beneficial to improving the quality of the vehicle-mounted system, on-board-mounted vehicle-mounted system, and the vehicle-mounted system is beneficial to improving the quality of the integrated system, and the vehicle-mounted system is more convenient to upgrade, and the vehicle-mounted system is more convenient to improve on the level of the vehicle-mounted system.
Detailed Description
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The terms first, second and the like in the description and in the claims and in the above-described figures are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed but may optionally include additional steps or elements not listed or inherent to such process, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of an in-vehicle charging system 10 according to an embodiment of the application, where the in-vehicle charging system 10 is used for a vehicle. Fig. 2 is a schematic diagram of a power processing circuit 140 according to an embodiment of the present application, corresponding to the vehicle-mounted charging system 10 of fig. 1. The vehicle-mounted charging system 10 comprises a control circuit 110, a wired charging circuit 120, a wireless charging circuit 130 and a power processing circuit 140, wherein the power processing circuit 140 comprises a first converter 1401 and a transformer 1402, one end of the first converter 1401 is connected with the wired charging circuit 120 and the wireless charging circuit 130, the other end of the first converter 1401 is connected with an input end of the transformer 1402, and the first converter 1401 is used for inputting a conversion voltage to the transformer 1402.
The control circuit 110 is respectively connected to the wired charging circuit 120, the wireless charging circuit 130 and the power processing circuit 140, and the control circuit 110 is configured to send a first charging control signal to the wired charging circuit 120 and a second charging control signal to the power processing circuit 140, and/or send a third charging control signal to the wireless charging circuit 130 and a fourth charging control signal to the power processing circuit 140.
The wired charging circuit 120 is connected to the first converter 1401, the wired charging circuit 120 is configured to send a first electrical signal to the first converter 1401 according to a first charging control signal, and the power processing circuit 140 is configured to stabilize and filter the first electrical signal according to a second charging control signal.
The wireless charging circuit 130 is connected to the first converter 1401, the wireless charging circuit 130 is configured to send a second electrical signal to the first converter 1401 according to a third charging control signal, and the power processing circuit 140 is configured to perform current conversion, voltage stabilization and filtering on the second electrical signal according to a fourth charging control signal.
The control circuit 110 may be a circuit mainly including a digital signal Processing (DIGITAL SIGNAL Processing) chip. The first converter 1401 may be a DC/DC converter, or may be any other device capable of high-frequency converting and voltage stabilizing an electric signal, and is not limited herein.
The first electrical signal may be a direct current electrical signal, and the second electrical signal may be an alternating current electrical signal. The first charge control signal may be a signal that controls the wired charging circuit 120 to perform wired charging, and the second charge control signal may be a signal that controls the power processing circuit 140 to process the first electrical signal. The third charge control signal may be a signal that controls the wireless charging circuit 130 to perform wireless charging, and the fourth charge control signal may be a signal that controls the power processing circuit 140 to process the second electrical signal. The converted voltage includes a first sub-converted voltage, which may be a voltage converted by the first electric signal, and a second sub-converted voltage, which may be a voltage converted by the second electric signal.
Specifically, when the control circuit 110 sends the first charging control signal to the wired charging circuit 120 and sends the second charging control signal to the power processing circuit 140, the wired charging circuit 120 sends the first electrical signal to the power processing circuit 140 according to the first charging control signal, and the power processing circuit 140 stabilizes and filters the first electrical signal according to the second charging control signal and outputs the target charging voltage to the vehicle-mounted battery.
When the control circuit 110 sends the third charge control signal to the wireless charging circuit 130 and sends the fourth charge control signal to the power processing circuit 140, the wireless charging circuit 130 sends the second electrical signal to the power processing circuit 140 according to the third charge control signal, and the power processing circuit 140 stabilizes and filters the second electrical signal according to the fourth charge control signal and outputs the target charge voltage to the vehicle-mounted battery.
The target charging voltage may be set comprehensively according to factors such as the performance of the vehicle-mounted battery, the factory setting of the vehicle, the electricity consumption condition of the vehicle, and the like, and is not limited herein.
It can be seen that in embodiments of the present application, the control circuit 110 and the power processing circuit 140 of the wired charging circuit 120 and the wireless charging circuit 130 are integrated. When performing wired charging, the control circuit 110 sends a second charging control signal to the power processing circuit 140, and the power processing circuit 140 stabilizes and filters the first electrical signal according to the second charging control signal. When wireless charging is performed, the control circuit 110 sends a fourth charging control signal to the power processing circuit 140, and the power processing circuit 140 performs current conversion, voltage stabilization and filtering on the second electrical signal according to the fourth charging control signal. On the one hand, the integration degree and the intelligent degree of the vehicle-mounted charging system are improved, the weight of the vehicle body and the vehicle manufacturing cost are reduced, on the other hand, the improvement of the integration degree of the vehicle-mounted charging system is also beneficial to error checking, updating and upgrading of the vehicle-mounted charging system, more convenient and efficient after-sales service is provided for users, and user experience is optimized.
In addition, the control circuit 110 may further include a wired charge control sub-circuit and a wireless charge control sub-circuit. Wherein the wired charging control sub-circuit is configured to send a first charging control signal to the wired charging circuit 120 and to send a second charging control signal to the power processing circuit 140. The wireless charging control sub-circuit is configured to send a third charging control signal to the wireless charging circuit 130 and to send a fourth charging control signal to the power processing circuit 140.
Further, the first converter 1401 further includes at least one power device, the control circuit 110 is connected to the first converter 1401, and the control circuit 110 controls the power processing circuit 140 by controlling on/off of the power device.
When the power processing circuit 140 receives the second charging control signal, the first converter 1401 is connected to the wired charging circuit 120 and is not connected to the wireless charging circuit 130. The first converter 1401 converts and stabilizes the first electrical signal transmitted by the wired charging circuit 120 at a high frequency, and then outputs a first sub-conversion voltage to the transformer 1402, so that the first sub-conversion voltage received by the transformer 1402 is a relatively stable high frequency square wave.
When the power processing circuit 140 receives the fourth charging control signal, the first converter 1401 is connected to the wireless charging circuit 130 and is not connected to the wired charging circuit 120. The first converter 1401 performs high-frequency conversion and voltage stabilization on the second electrical signal transmitted by the wireless charging circuit 130, and then outputs a second sub-conversion voltage to the transformer 1402, so that the second sub-conversion voltage received by the transformer 1402 is a relatively stable high-frequency sine wave.
It can be seen that, in the embodiment of the present application, the wired charging circuit 120 stabilizes the first electrical signal through the first converter 1401 and the transformer 1402, the wireless charging circuit 130 performs signal conversion and voltage stabilization on the second electrical signal through the first converter 1401 and the transformer 1402, and the wired charging circuit 120 and the wireless charging circuit 130 share the first converter 1401 and the transformer 1402, which is beneficial to improving the integration degree and the intelligent degree of the vehicle-mounted charging system, reducing the weight of the vehicle body and the cost of manufacturing the vehicle, and improving the integration degree of the vehicle-mounted charging system is beneficial to error checking, updating and upgrading of the vehicle-mounted charging system, and is beneficial to providing more convenient and efficient after-sales service for users, and optimizing user experience.
In a possible example, referring to fig. 3, the power processing circuit 140 further includes a second converter 1403, one end of the second converter 1403 is connected to an output terminal of the transformer 1402, and the other end of the second converter 1403 is connected to the vehicle battery.
The second converter 1403 may be a DC/DC converter, or may be other devices capable of rectifying and filtering an electric signal, which is not limited herein.
Specifically, the second converter 1403 further includes at least one power device, the control circuit 110 is connected to the second converter 1403, and the control circuit 110 controls the power processing circuit 140 by controlling on-off of the power devices in the first converter 1401 and the second converter 1403. The second converter 1403 includes a rectifying and filtering circuit, which includes a plurality of diodes to rectify and filter the first sub-converted voltage and the second sub-converted voltage output from the transformer 1402, and output a relatively stable target charging voltage to the vehicle battery. Wherein the target charging voltage may be a direct current signal.
It can be seen that, in the embodiment of the present application, the second converter 1403 rectifies and filters the first sub-conversion voltage and the second sub-conversion voltage, and outputs a relatively stable target charging voltage to the vehicle-mounted battery, which is helpful for prolonging the service life of the battery, further ensuring the safety and stability of driving of the user and optimizing the user experience.
In one possible example, referring to fig. 4, the wired charging circuit 120 includes a power factor correction circuit (Power Factor Correction, PFC) 1201, one end of the power factor correction circuit 1201 is connected to the input current terminal, and the other end of the power factor correction circuit 1201 is connected to the power processing circuit 140.
The PFC circuit 1201 may be an active PFC or a passive PFC, and is not limited herein.
Specifically, the pfc circuit 1201 is capable of stabilizing an input voltage and adjusting the input voltage and the input current, so that phases of the input voltage and the input current are the same, which is conducive to improving energy transmission efficiency, that is, improving transmission efficiency of the first electrical signal, further improving charging efficiency of the vehicle charging system, shortening charging time of a user, and optimizing user experience.
In one possible example, the wireless charging circuit 130 includes a receiving coil 1301, the receiving coil 1301 is connected to the first converter 1401, and the receiving coil 1301 is configured to receive the electromagnetic wave signal emitted by the transmitting coil.
Specifically, the receiving coil 1301 receives an electromagnetic wave signal transmitted from the transmitting coil, and converts the electromagnetic wave signal into a second electrical signal. After the second electric signal passes through the power processing circuit 140, the second electric signal is converted into a target charging voltage and input to the in-vehicle battery.
It will be appreciated that the ground typically requires a wireless charging station to be configured for the vehicle to be wirelessly charged. The wireless charging station inputs the input voltage to the ground power factor correction circuit, the inverter, and the transmitting coil, respectively, converts the input voltage into an electromagnetic wave signal, and transmits the electromagnetic wave signal to the receiving coil 1301, and then the receiving coil 1301 converts the electromagnetic wave signal into a second electrical signal.
The manner in which the control circuit 110 communicates with the wireless charging station may be wireless communication, including wireless local area network (WIRELESS FIDELITY, WIFI), bluetooth, general Packet Radio Service (GPRS) technology, third Generation mobile communication technology (3 rd-Generation, 3G), fourth Generation mobile communication technology (4 th-Generation, 4G), zigBee (ZigBee), etc., without limitation.
In one possible example, the control circuit 110 further includes a signal detection circuit for detecting whether the wired charging circuit 120 has a first input signal, so that the control circuit 110 sends a first charging control signal to the wired charging circuit 120 according to the first input signal and sends a second charging control signal to the power processing circuit 140.
In one possible example, the signal detection circuit is further configured to detect whether the wireless charging circuit 130 has the second input signal, so that the control circuit 110 sends the third charging control signal to the wireless charging circuit 130 according to the second input signal, and sends the fourth charging control signal to the power processing circuit 140.
The first input signal may be a wired charging signal, and the second input signal may be a wireless charging signal.
Specifically, wireless charging may be set to take precedence over wired charging. That is, the first input signal is detected only when the second input signal is not detected, and the control circuit 110 transmits the first charge control signal to the wired charging circuit 120 according to the first input signal and transmits the second charge control signal to the power processing circuit 140 when the first input signal is detected, and the control circuit 110 transmits the third charge control signal to the wireless charging circuit 130 according to the second input signal and transmits the fourth charge control signal to the power processing circuit 140 when the second input signal is detected, so that the vehicle-mounted charging system 10 performs wireless charging.
The priority order of the wired charging and the wireless charging may be set according to factors such as the vehicle performance and the user setting, and is not limited herein, and for example, the priority order of the wired charging over the wireless charging, or the priority order of the wired charging and the wireless charging may be the same.
In one possible example, the transformer 1402 includes a primary winding and a secondary winding, the first converter 1401 is connected to the primary winding of the transformer 1402, and the second converter 1403 is connected to the secondary winding of the transformer 1402.
In one possible example, the power processing circuit 140 includes at least one switching tube, at least one diode, at least one inductor, and at least one capacitor.
It can be seen that, in the embodiment of the present application, whether the first input signal exists in the wired charging circuit 120 and whether the second input signal exists in the wireless charging circuit 130 is detected, and corresponding operations are executed according to the detected signals, and meanwhile, the wired charging circuit 120, the control circuit 110 of the wireless charging circuit 130 and the power processing circuit 140 are integrated, which is beneficial to improving the integration degree and the intelligence degree of the vehicle-mounted charging system, reducing the weight of the vehicle body and the cost of manufacturing the vehicle, and improving the integration degree of the vehicle-mounted charging system is beneficial to error checking, updating and upgrading of the vehicle-mounted charging system, and is beneficial to providing more convenient and efficient after-sales service for users and optimizing user experience.
The vehicle-mounted charging system 10 may be an integrated system of a vehicle-mounted charger and a vehicle-mounted DC/DC converter, an integrated system (CDU) of a vehicle-mounted charger, a vehicle-mounted DC/DC converter and a high-voltage distribution and fast charging high-current, or an integrated system (CCU) of a vehicle-mounted charger, a vehicle-mounted DC/DC and a high-voltage distribution and auxiliary power supply current, which is not limited herein.
Referring to fig. 5, fig. 5 is a flowchart of a charging control method according to an embodiment of the present application, which is used in the vehicle charging system 10 provided in any of the above embodiments. The charging control method comprises the following steps:
101. according to the first input signal, a first charging control signal is sent to the wired charging circuit, and a second charging control signal is sent to the power processing circuit;
102. the wired charging circuit is controlled to provide a first electrical signal to the power processing circuit according to the first charging control signal, and the power processing circuit is controlled to stabilize and filter the first electrical signal according to the second charging control signal.
Referring to fig. 6, in one possible example, the charging control method further includes:
103. according to the second input signal, sending a third charging control signal to the wireless charging circuit, and sending a fourth charging control signal to the power processing circuit;
104. And controlling the wireless charging circuit to provide a second electric signal for the power processing circuit according to the third charging control signal, and controlling the power processing circuit to perform current conversion, voltage stabilization and filtering on the second electric signal according to the fourth charging control signal.
The above-mentioned charge control method is substantially the same as the implementation principle of the vehicle-mounted charging system 10 described in any of the foregoing embodiments, and specific reference may be made to the foregoing embodiments, which will not be described herein.
In one possible example, an embodiment of the present application provides a vehicle including the in-vehicle charging system 10 provided by any of the embodiments of the application described above. The in-vehicle charging system in the vehicle is the same as the in-vehicle charging system 10 described in any one of the above-described application embodiments, and will not be described here.
It should be noted that, for simplicity of description, the foregoing embodiments of the application are all described as a series of acts, but it should be understood by those skilled in the art that the present application is not limited by the order of acts described, as some steps may be performed in other orders or concurrently in accordance with the present application. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required for the present application.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
In the several embodiments provided by the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, such as the above-described division of units, merely a division of logic functions, and there may be additional manners of dividing in actual implementation, such as multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, or may be in electrical or other forms.
The units described above as separate components may or may not be physically separate, and components shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The foregoing has outlined rather broadly the more detailed description of embodiments of the application, wherein the principles and embodiments of the application are explained in detail using specific examples, the description of the embodiments being merely intended to facilitate an understanding of the application and its core concepts; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present application, the present description should not be construed as limiting the present application in view of the above.