技术领域technical field
本发明涉及了一种充电系统及无线充电方法，且特别涉及一种适用于电池特性的无线充电系统及无线充电的控制方法，属于无线充电领域。The invention relates to a charging system and a wireless charging method, and in particular to a wireless charging system and a wireless charging control method suitable for battery characteristics, belonging to the field of wireless charging.
背景技术Background technique
现有的充电的方式包括接触式充电和无线式非接触充电。非接触式充电具有操作方便，安全，简单，无接触磨损、无直接电气连接等优点，同时无需人工操作，具有广阔的应用前景。Existing charging methods include contact charging and wireless non-contact charging. Non-contact charging has the advantages of convenient operation, safety, simplicity, no contact wear, no direct electrical connection, and no manual operation, so it has broad application prospects.
目前蓄电池最常用的充电方法是恒流恒压充电：第一阶段以恒定电流充电；当电压达到预定值时转入第二阶段进行恒压充电，此时电流逐渐减小；当充电电流达到下降到零时，蓄电池完全充满。At present, the most commonly used charging method for batteries is constant current and constant voltage charging: the first stage is charged with a constant current; when the voltage reaches a predetermined value, it is transferred to the second stage for constant voltage charging, and the current decreases gradually; At zero, the battery is fully charged.
大多数单级电路实现恒压恒流充电可采取两种方式：一，在整个充电阶段采用移相范围较大的移相控制，但多数区域移相角较大；二，采用开关切换拓扑的方式在不同阶段采用不同的拓扑充电。以上方法带来了电路损耗的增加及控制系统的更趋复杂。因此，本发明提出了一种新思路，能够有效解决上述问题。Most single-stage circuits can adopt two methods to realize constant voltage and constant current charging: first, adopt phase shift control with a large phase shift range in the entire charging stage, but most areas have relatively large phase shift angles; second, use switch switching topology The method adopts different topology charging at different stages. The above method brings about the increase of the circuit loss and the more complex of the control system. Therefore, the present invention proposes a new idea, which can effectively solve the above problems.
发明内容Contents of the invention
本发明的目的在于提供一种高输出功率因数，同时实现恒流、恒压稳定输出的无线充电系统，同时给出了一种能达到该目的的无线充电的控制方法。The purpose of the present invention is to provide a wireless charging system with a high output power factor and stable output of constant current and constant voltage, and at the same time provide a wireless charging control method that can achieve this purpose.
为实现前述目的，本发明采用如下技术方案：To achieve the aforementioned object, the present invention adopts the following technical solutions:
一种适用于电池特性的恒流、恒压无线充电系统，包括直流电源、逆变模块、松散耦合变压器、副边补偿拓扑、整流模块、负载电池和DSP信号发生器，所述直流电源连接逆变模块提供直流输入电压，所述逆变模块经PWM信号触发产生高频交变电压，逆变模块连接松散耦合变压器，所述整流模块将松散耦合变压器输出端的电流整流滤波得到直流电流信号用于负载电池充电，A constant current and constant voltage wireless charging system suitable for battery characteristics, including a DC power supply, an inverter module, a loosely coupled transformer, a secondary side compensation topology, a rectifier module, a load battery, and a DSP signal generator. The DC power supply is connected to an inverter The variable module provides a DC input voltage, the inverter module is triggered by a PWM signal to generate a high-frequency alternating voltage, the inverter module is connected to a loosely coupled transformer, and the rectifier module rectifies and filters the current at the output end of the loosely coupled transformer to obtain a DC current signal for use in load battery charging,
所述松散耦合变压器的接收端包括两个独立的接收线圈，所述的两个接收线圈分别连接一个补偿拓扑，其中一个串联，另一个并联，两个补偿拓扑组成所述的副边补偿拓扑，且两个接收线圈连同补偿拓扑构成的LC回路分别设计在不同的谐振频率。The receiving end of the loosely coupled transformer includes two independent receiving coils, and the two receiving coils are respectively connected to a compensation topology, one of which is connected in series and the other is connected in parallel, and the two compensation topologies form the secondary side compensation topology, And the LC loop formed by the two receiving coils together with the compensation topology is designed at different resonant frequencies.
优选的，所述松散耦合变压器包括磁芯、发射线圈、接收线圈；所述的发射线圈为一个，接收线圈为两个；发射线圈为螺线管绕制方式，发射线圈绕制在条状磁芯上；接受线圈为平面绕制方式，两个接收线圈之间有屏蔽层，互相解耦；绕制在同一平面磁芯上的两个接受线圈匝数相差在2倍以上。Preferably, the loosely coupled transformer includes a magnetic core, a transmitting coil, and a receiving coil; the transmitting coil is one, and the receiving coil is two; the transmitting coil is a solenoid winding method, and the transmitting coil is wound on a strip magnetic On the core; the receiving coil is a planar winding method, and there is a shielding layer between the two receiving coils to decouple each other; the number of turns of the two receiving coils wound on the same planar magnetic core is more than 2 times different.
本发明公开了一种所述系统的恒流、恒压无线充电方法，The invention discloses a constant current and constant voltage wireless charging method of the system,
直流电源连接逆变模块提供直流输入电压，逆变模块经PWM信号触发产生高频交变电压，逆变模块连接松散耦合变压器提供交流输入，The DC power supply is connected to the inverter module to provide a DC input voltage. The inverter module is triggered by a PWM signal to generate a high-frequency alternating voltage. The inverter module is connected to a loosely coupled transformer to provide an AC input.
整流模块将松散耦合变压器输出端的电流整流滤波得到直流电流信号用于负载电池充电，The rectifier module rectifies and filters the current at the output end of the loosely coupled transformer to obtain a DC current signal for charging the load battery.
通过采样得到负载电池的电压电流信号，判断系统需要处于恒流还是恒压充电阶段，并根据设计的谐振频率点，由DSP信号发生器的逻辑运算模块得到占空比和频率信号，将其输入到DSP信号发生器，使之输出相应的PWM控制信号，实现原边工作频率的切换。Obtain the voltage and current signals of the load battery by sampling, judge whether the system needs to be in the constant current or constant voltage charging stage, and according to the designed resonant frequency point, the logic operation module of the DSP signal generator obtains the duty ratio and frequency signal, and inputs it To the DSP signal generator, so that it outputs the corresponding PWM control signal to realize the switching of the primary side working frequency.
优选的，所述系统先以恒定电流充电；当电压达到预定值时再进行恒压充电，此时电流逐渐减小；当充电电流达到下降到零时，电池充满。Preferably, the system is first charged with a constant current; when the voltage reaches a predetermined value, the constant voltage charge is performed, and the current gradually decreases; when the charging current reaches zero, the battery is fully charged.
优选的，当需要进行恒流充电时，原边工作频率切换为低频，使具有串联补偿拓扑的接收线圈工作，负载进行恒流充电；Preferably, when charging with a constant current is required, the operating frequency of the primary side is switched to a low frequency, so that the receiving coil with a series compensation topology works, and the load is charged with a constant current;
当需要进行恒压充电时，原边工作频率切换为高频，使具有并联补偿拓扑的接收线圈工作，负载进行恒压充电。When constant voltage charging is required, the operating frequency of the primary side is switched to high frequency, so that the receiving coil with parallel compensation topology works, and the load is charged at constant voltage.
优选的，所述的两个接收线圈连同补偿拓扑设计为不同的谐振频率，且谐振频率差别在10倍以上。Preferably, the two receiving coils together with the compensation topology are designed to have different resonant frequencies, and the difference in resonant frequencies is more than 10 times.
与现有技术相比，本发明具有的优点是：Compared with prior art, the present invention has the advantage that:
本发明无需额外DC-DC变换，减少电路体积及损耗；系统可实现零电压开关，效率高；不会引起频率分裂等现象；控制系统简单，易操作。The invention does not require additional DC-DC conversion, reduces circuit volume and loss; the system can realize zero-voltage switching, and has high efficiency; it will not cause frequency splitting and the like; the control system is simple and easy to operate.
附图说明Description of drawings
图1为本发明无线充电系统的示意图。FIG. 1 is a schematic diagram of the wireless charging system of the present invention.
图2为本发明松散耦合变压器的示意图。Fig. 2 is a schematic diagram of the loosely coupled transformer of the present invention.
图3为本发明无线充电的控制方法的过程示意图。FIG. 3 is a schematic diagram of the process of the wireless charging control method of the present invention.
具体实施方式Detailed ways
下面结合说明书附图对本发明进行详细说明。The present invention will be described in detail below in conjunction with the accompanying drawings.
图1为本发明无线充电系统的示意图。如图1所示，无线充电装置包括直流电源①、逆变模块②、松散耦合变压器③、副边补偿拓扑④、整流模块⑤、电池⑥、DSP信号发生器⑦。FIG. 1 is a schematic diagram of the wireless charging system of the present invention. As shown in Figure 1, the wireless charging device includes a DC power supply ①, an inverter module ②, a loosely coupled transformer ③, a secondary side compensation topology ④, a rectifier module ⑤, a battery ⑥, and a DSP signal generator ⑦.
逆变模块②由4个开关管构成，将直流信号转换为高频交流信号。单个整流模块⑤由4个不控二极管构成，将交流信号转换为直流信号，向负载供电。每个接收线圈连同补偿拓扑分别连接一个整流模块，共有两个整流模块。The inverter module ② is composed of 4 switching tubes, which converts the DC signal into a high-frequency AC signal. The single rectification module ⑤ is composed of 4 uncontrolled diodes, which converts the AC signal into a DC signal and supplies power to the load. Each receiving coil and the compensation topology are respectively connected to a rectification module, and there are two rectification modules in total.
直流电源①连接逆变模块②提供直流输入电压，所述逆变模块②经PWM信号触发产生高频交变电压，连接松散耦合变压器③提供交流电源信号，所述整流模块⑤将松散耦合变压器输出端的电流整流滤波得到直流电流信号用于电池⑥充电。同时，直流信号输入到DSP信号发生器⑦中，调节无线充电的工作频率。The DC power supply ① is connected to the inverter module ② to provide a DC input voltage. The inverter module ② is triggered by a PWM signal to generate a high-frequency alternating voltage, connected to a loosely coupled transformer ③ to provide an AC power signal, and the rectifier module ⑤ outputs the loosely coupled transformer The current rectification and filtering at the terminal obtains a DC current signal for charging the battery ⑥. At the same time, the DC signal is input into the DSP signal generator ⑦ to adjust the working frequency of wireless charging.
进一步的，副边补偿拓扑将两种具有恒流、恒压输出特性的拓扑整合在一个电路，所述的两个接收线圈分别连接一个补偿拓扑，其中一个串联，另一个并联，两个补偿拓扑组成所述的副边补偿拓扑，且两个接收线圈连同补偿拓扑构成的LC回路分别设计在不同的谐振频率。通过控制切换原边的工作频率使电路达到恒流、恒压的输出特性。Further, the secondary side compensation topology integrates two topologies with constant current and constant voltage output characteristics into one circuit, and the two receiving coils are respectively connected to a compensation topology, one of which is connected in series and the other in parallel, and the two compensation topologies The secondary side compensation topology is formed, and the LC circuits formed by the two receiving coils together with the compensation topology are respectively designed at different resonance frequencies. By controlling and switching the operating frequency of the primary side, the circuit can achieve the output characteristics of constant current and constant voltage.
进一步的，如图2所示，所述松散耦合变压器③包括磁芯、发射端和接收端。发射端由单个线圈构成，接收端由两个独立的线圈连同补偿拓扑组成。接收端的两个线圈连同补偿拓扑设计为不同的谐振频率。发射线圈为螺线管绕制方式，发射线圈绕制在条状磁芯上；接受线圈为平面绕制方式，两个接收线圈之间有屏蔽层，互相解耦；绕制在同一平面磁芯上的两个接受线圈匝数相差在2倍以上。Further, as shown in FIG. 2 , the loosely coupled transformer ③ includes a magnetic core, a transmitting end and a receiving end. The transmitting end consists of a single coil and the receiving end consists of two independent coils with compensation topology. The two coils at the receiving end are designed with different resonant frequencies together with the compensation topology. The transmitting coil is a solenoid winding method, and the transmitting coil is wound on a strip magnetic core; the receiving coil is a planar winding method, and there is a shielding layer between the two receiving coils, which are decoupled from each other; they are wound on the same planar magnetic core The difference in the number of turns of the two receiving coils is more than 2 times.
本发明还提供了一种无线充电方法或者说是无线充电的控制方法，通过采样得到负载端的电流、电压信号，经过DSP的捕获模块输入DSP逻辑运算模块,判断系统处于恒压还是恒流模式，并根据设计的谐振频率点，由DSP信号发生器输出PWM控制信号，实现原边工作频率的切换。具体如图3所示：The present invention also provides a wireless charging method or a wireless charging control method. The current and voltage signals at the load end are obtained by sampling, and input to the DSP logic operation module through the DSP capture module to determine whether the system is in constant voltage or constant current mode. And according to the designed resonant frequency point, the PWM control signal is output by the DSP signal generator to realize the switching of the working frequency of the primary side. Specifically as shown in Figure 3:
第一步骤，逻辑运算模块控制第一阶段以恒定电流充电；In the first step, the logic operation module controls the first stage to charge with a constant current;
第二步骤，检测整流模块输出电压、电流信号；The second step is to detect the output voltage and current signal of the rectifier module;
第三步骤，判断整流模块输出电压是否达到预定值。若达到预定值，进入第四步骤；若未达到预定值，继续第一步骤；The third step is to judge whether the output voltage of the rectification module reaches a predetermined value. If it reaches the predetermined value, enter the fourth step; if it does not reach the predetermined value, continue to the first step;
第四步骤，进行恒压充电；The fourth step is to carry out constant voltage charging;
第五步骤，判断电池是否充满。若充满，进入第六步骤；若未充满，继续第四步骤；The fifth step is to judge whether the battery is fully charged. If it is full, go to the sixth step; if it is not full, go to the fourth step;
第六步骤，充电结束。The sixth step, the charging ends.
具体的充电流程为：直流电源连接逆变模块提供直流输入电压，逆变模块经PWM信号触发产生高频交变电压，逆变模块连接松散耦合变压器提供交流输入，The specific charging process is as follows: the DC power supply is connected to the inverter module to provide a DC input voltage, the inverter module is triggered by a PWM signal to generate a high-frequency alternating voltage, and the inverter module is connected to a loosely coupled transformer to provide an AC input.
整流模块将松散耦合变压器输出端的电流整流滤波得到直流电流信号用于负载电池充电，The rectifier module rectifies and filters the current at the output end of the loosely coupled transformer to obtain a DC current signal for charging the load battery.
通过采样得到负载电池的电压电流信号，判断系统需要处于恒流还是恒压充电阶段，并根据设计的谐振频率点，由DSP信号发生器的逻辑运算模块得到占空比和频率信号，将其输入到DSP信号发生器，使之输出相应的PWM控制信号，实现原边工作频率的切换。Obtain the voltage and current signals of the load battery by sampling, judge whether the system needs to be in the constant current or constant voltage charging stage, and according to the designed resonant frequency point, the logic operation module of the DSP signal generator obtains the duty ratio and frequency signal, and inputs it To the DSP signal generator, so that it outputs the corresponding PWM control signal to realize the switching of the primary side working frequency.
系统先以恒定电流充电；当电压达到预定值时再进行恒压充电，此时电流逐渐减小；当充电电流达到下降到零时，电池充满。The system first charges with a constant current; when the voltage reaches a predetermined value, the constant voltage charge is performed, and the current gradually decreases at this time; when the charging current reaches zero, the battery is fully charged.
当需要进行恒流充电时，原边工作频率切换为低频，使具有串联补偿拓扑的接收线圈工作，负载进行恒流充电；When constant current charging is required, the operating frequency of the primary side is switched to low frequency, so that the receiving coil with series compensation topology works, and the load is charged with constant current;
当需要进行恒压充电时，原边工作频率切换为高频，使具有并联补偿拓扑的接收线圈工作，负载进行恒压充电。When constant voltage charging is required, the operating frequency of the primary side is switched to high frequency, so that the receiving coil with parallel compensation topology works, and the load is charged at constant voltage.
以上所述，仅为本发明的较佳实施例，并非用于限定本发明的保护范围。显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及等同技术的范围之内，则本发明也意图包含这些改动和变型在内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and equivalent technologies, the present invention also intends to include these modifications and variations.
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| CN201810509820.1ACN108808875B (en) | 2018-05-24 | 2018-05-24 | A constant current, constant voltage wireless charging system and method for wireless charging suitable for battery characteristics |
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| CN201810509820.1ACN108808875B (en) | 2018-05-24 | 2018-05-24 | A constant current, constant voltage wireless charging system and method for wireless charging suitable for battery characteristics |
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| CN108808875Atrue CN108808875A (en) | 2018-11-13 |
| CN108808875B CN108808875B (en) | 2020-08-25 |
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| CN201810509820.1AActiveCN108808875B (en) | 2018-05-24 | 2018-05-24 | A constant current, constant voltage wireless charging system and method for wireless charging suitable for battery characteristics |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110138101A (en)* | 2019-05-20 | 2019-08-16 | 清华大学 | A kind of wireless power supply system circuit topology applied to rail traffic |
| CN110518711A (en)* | 2019-09-04 | 2019-11-29 | 西南交通大学 | A kind of more reception inductive electric energy transmission systems decoupled using passive element |
| CN112421734A (en)* | 2020-12-02 | 2021-02-26 | 青岛大学 | Single-stage high-order compensation constant-current constant-voltage wireless charging device and method |
| CN113162136A (en)* | 2021-03-04 | 2021-07-23 | 广西电网有限责任公司电力科学研究院 | Wireless charging system and method |
| CN113193662A (en)* | 2021-04-28 | 2021-07-30 | 安徽工业大学 | Variable-frequency constant-current constant-voltage control device and method of wireless charging system |
| CN114884225A (en)* | 2022-05-26 | 2022-08-09 | 南昌大学 | Coplanar multi-branch constant-current constant-voltage wireless power transmission system irrelevant to load |
| CN114932817A (en)* | 2022-06-17 | 2022-08-23 | 中车唐山机车车辆有限公司 | Wireless receiving circuit and dynamic wireless power supply device |
| US20220271576A1 (en)* | 2019-11-14 | 2022-08-25 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Receiving device and transmitting device for wireless charging, and wireless charging system |
| CN116054335A (en)* | 2023-01-15 | 2023-05-02 | 哈尔滨工业大学 | Topology parameter design method for zero voltage switching or zero phase angle input in wireless charging system |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105656215A (en)* | 2016-03-25 | 2016-06-08 | 浙江大学 | Wireless energy transmission device for high-voltage transmission line non-contact power supply and method thereof |
| US9812893B2 (en)* | 2011-07-14 | 2017-11-07 | Samsung Electronics Co., Ltd | Wireless power receiver |
| CN107769573A (en)* | 2017-11-20 | 2018-03-06 | 东南大学 | The WPT system constant current constant voltage of bilateral LCC networks exports adjustable parameter setting method |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9812893B2 (en)* | 2011-07-14 | 2017-11-07 | Samsung Electronics Co., Ltd | Wireless power receiver |
| CN105656215A (en)* | 2016-03-25 | 2016-06-08 | 浙江大学 | Wireless energy transmission device for high-voltage transmission line non-contact power supply and method thereof |
| CN107769573A (en)* | 2017-11-20 | 2018-03-06 | 东南大学 | The WPT system constant current constant voltage of bilateral LCC networks exports adjustable parameter setting method |
| Title |
|---|
| 周晶等: "混合动力用双向变换器模式切换控制探讨", 《电力电子技术》* |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110138101A (en)* | 2019-05-20 | 2019-08-16 | 清华大学 | A kind of wireless power supply system circuit topology applied to rail traffic |
| CN110518711A (en)* | 2019-09-04 | 2019-11-29 | 西南交通大学 | A kind of more reception inductive electric energy transmission systems decoupled using passive element |
| US20220271576A1 (en)* | 2019-11-14 | 2022-08-25 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Receiving device and transmitting device for wireless charging, and wireless charging system |
| CN112421734A (en)* | 2020-12-02 | 2021-02-26 | 青岛大学 | Single-stage high-order compensation constant-current constant-voltage wireless charging device and method |
| CN113162136A (en)* | 2021-03-04 | 2021-07-23 | 广西电网有限责任公司电力科学研究院 | Wireless charging system and method |
| CN113162136B (en)* | 2021-03-04 | 2022-12-16 | 广西电网有限责任公司电力科学研究院 | Wireless charging system and method |
| CN113193662A (en)* | 2021-04-28 | 2021-07-30 | 安徽工业大学 | Variable-frequency constant-current constant-voltage control device and method of wireless charging system |
| CN113193662B (en)* | 2021-04-28 | 2024-02-02 | 安徽工业大学 | Variable-frequency constant-current constant-voltage control device and method for wireless charging system |
| CN114884225A (en)* | 2022-05-26 | 2022-08-09 | 南昌大学 | Coplanar multi-branch constant-current constant-voltage wireless power transmission system irrelevant to load |
| CN114932817A (en)* | 2022-06-17 | 2022-08-23 | 中车唐山机车车辆有限公司 | Wireless receiving circuit and dynamic wireless power supply device |
| CN116054335A (en)* | 2023-01-15 | 2023-05-02 | 哈尔滨工业大学 | Topology parameter design method for zero voltage switching or zero phase angle input in wireless charging system |
| CN116054335B (en)* | 2023-01-15 | 2025-06-20 | 哈尔滨工业大学 | A topology parameter design method for zero voltage switching or zero phase angle input in a wireless charging system |
| Publication number | Publication date |
|---|---|
| CN108808875B (en) | 2020-08-25 |
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