WO2018196411A1 - 一种基于无线电能传输的电源管理系统及方法 - Google Patents

一种基于无线电能传输的电源管理系统及方法 Download PDF

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Publication number
WO2018196411A1
WO2018196411A1 PCT/CN2017/117878 CN2017117878W WO2018196411A1 WO 2018196411 A1 WO2018196411 A1 WO 2018196411A1 CN 2017117878 W CN2017117878 W CN 2017117878W WO 2018196411 A1 WO2018196411 A1 WO 2018196411A1
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Prior art keywords
charging
bms
control box
circuit
sub
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PCT/CN2017/117878
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English (en)
French (fr)
Inventor
李晓伟
焦来磊
马邦华
徐宝华
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中惠创智无线供电技术有限公司
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Priority claimed from CN201710296139.9A external-priority patent/CN106911174B/zh
Priority claimed from CN201720464361.0U external-priority patent/CN207010321U/zh
Application filed by 中惠创智无线供电技术有限公司 filed Critical 中惠创智无线供电技术有限公司
Publication of WO2018196411A1 publication Critical patent/WO2018196411A1/zh

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    • 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

Definitions

  • the present invention relates to the field of wireless charging technologies, and in particular, to a power management system and method based on wireless power transmission.
  • the wireless energy transmission technology has become a hot spot of recent research and development because it solves the problems that the traditional wired charging method is easy to wear, the connector is cumbersome, and there are hidden dangers of leakage.
  • Figure 1 is a schematic diagram of the structure of the existing wireless power transmission power management system; the vehicle receiving circuit directly charges the battery pack of the vehicle, due to the work of the vehicle battery pack
  • the voltage can reach 750V.
  • the working current is also increasing. Therefore, it has high requirements for inverter power supply and coil and the supporting equipment in the circuit.
  • the industry standard components are difficult to meet the requirements, and the development of related equipment is difficult. Big.
  • the object of the present invention is to provide a power management system and method based on radio energy transmission, which is used for charging a battery pack of a vehicle by a plurality of charging circuits, thereby reducing the voltage in the charging circuit, thereby reducing the risk in the development and experiment of the system and
  • the system cost is low for equipment requirements.
  • the present invention provides a power tube based on wireless energy transmission.
  • Management system including:
  • each set of said charging circuit comprising:
  • a ground transmitting circuit connected to the power grid for transmitting energy
  • a vehicle end receiving circuit for receiving energy and supplying power to the battery box in the group, wherein the vehicle end receiving circuit is respectively connected to each battery box in the group;
  • a BMS sub-control box for detecting the state of charge of each battery box in the group in real time and transmitting it to the BMS main control box, and the BMS sub-control box is connected to the BMS main control box;
  • the battery boxes in each of the charging circuits are connected in series to supply power to the load;
  • the power management system further includes:
  • each of the BMS sub-control box and the vehicle end control system for detecting the current of the battery box series circuit, and determining the charging demand according to the charging status sent by each of the BMS sub-control boxes, and the charging status And charging requirements are transmitted by the vehicle end control system to the BMS main control box of the ground control system;
  • the vehicle end control system for performing information interaction between the BMS main control box and the ground control system
  • the ground control system for wirelessly communicating with the vehicle end control system and coupled to each of the terrestrial transmitting circuits for controlling the output power of each terrestrial transmitting circuit in accordance with the state of charge and charging demand.
  • the vehicle end receiving circuit is respectively connected to each battery box in the group through a sub relay;
  • the BMS sub-control box in each group of the charging circuit is electrically connected to each of the sub-relays in the group, and the BMS sub-control box controls the corresponding sub-relay according to the corresponding instruction sent by the BMS main control box. close.
  • the battery boxes in each of the charging circuits are connected in series to supply power to the load through the total relay;
  • the BMS main control box is electrically connected to the total relay to control the opening and closing of the total relay.
  • the specific number is specifically one.
  • each of the BMS sub-control boxes communicates with the BMS through a vehicle-side CAN bus The box is connected.
  • a wireless data communication device is disposed between each of the ground transmitting circuits and the corresponding BMS sub-control box, and the wireless data communication device is configured to send the charging status obtained by the BMS sub-control box to a corresponding ground. Transmitting circuit.
  • the ground transmitting circuit specifically includes:
  • a power factor correction circuit a high frequency inverter power supply, a transmission compensation circuit, and a transmitting coil connected in series, wherein an input end of the power factor correction circuit is connected to the power grid, and between the transmitting coil and the vehicle receiving circuit Perform wireless energy transfer.
  • the vehicle end receiving circuit specifically includes:
  • the receiving coil, the receiving compensation circuit and the rectifying circuit are sequentially connected in series, wherein wireless energy transmission is performed between the receiving coil and the transmitting coil, and the rectifying circuit is connected to the battery box to supply power to the battery box.
  • the present invention further provides a power management method based on radio energy transmission.
  • the power management system according to any of the above, the method includes:
  • the ground control system After receiving the charging command input by the user, the ground control system sends the charging command to the BMS main control box through the vehicle end control system;
  • the BMS main control box sends the charging command to each BMS sub-control box separately, and completes charging preparation according to the response fed back by the BMS sub-control box;
  • the ground control system controls each ground transmitting circuit to supply power to a corresponding group of battery boxes;
  • the BMS sub-control box detects the charging state of a corresponding set of battery boxes in real time and sends them to the BMS main control box;
  • the BMS main control box detects the current of the battery box series circuit, and determines the charging demand according to the charging status sent by each of the BMS sub-control boxes, and sends the charging status and the charging demand to the vehicle through the vehicle end control system.
  • Ground control system
  • the ground control system adjusts an output power of each of the ground transmitting circuits according to the charging state and a charging demand control, and when the charging state is charging completion, the ground control system controls the corresponding ground transmitting circuit to stop supplying power. .
  • the invention provides a power management system and method based on radio energy transmission, including BMS main control box, vehicle end control system, ground control system and multiple sets of charging circuits, each set of charging circuit comprises a ground transmitting circuit, a vehicle receiving circuit, a specific number of battery boxes and a BMS sub-control box, ie the invention will
  • the vehicle battery pack is divided into multiple groups, each group includes a specific number of battery boxes, and each group of battery boxes corresponds to a set of charging circuits.
  • This structure reduces the charging voltage of each group of battery boxes, since each group of charging circuits only needs
  • the invention reduces the voltage in the charging circuit by reducing the voltage in the charging circuit, thereby reducing the risk in the system development and the experiment process, for charging a group of battery boxes, compared with the prior art system in which a charging circuit charges the entire vehicle battery pack.
  • the requirements on the inverter power supply and the coil and the supporting equipment in the circuit are reduced, and the system cost is reduced.
  • FIG. 1 is a schematic structural diagram of a conventional power management system for wireless energy transmission
  • FIG. 2 is a schematic structural diagram of a power management system based on radio energy transmission according to the present invention
  • FIG. 3 is a schematic structural diagram of another power management system based on radio energy transmission provided by the present invention.
  • FIG. 4 is a schematic diagram of a process of a power management method based on radio energy transmission according to the present invention.
  • the core of the invention is to provide a power management system and method based on radio energy transmission, which is used for charging a battery pack of a vehicle by a plurality of charging circuits, thereby reducing the voltage in the charging circuit, thereby reducing the risk in the development and experiment of the system and
  • the system cost is low for equipment requirements.
  • FIG. 2 is a schematic structural diagram of a power management system based on radio energy transmission provided by the present invention.
  • the system includes:
  • each set of charging circuits includes:
  • a ground transmitting circuit connected to the power grid for transmitting energy
  • a vehicle receiving circuit for receiving energy and supplying power to the battery box in the group, and the vehicle receiving circuit is respectively connected to each battery box in the group;
  • the BMS sub-control box is connected with the BMS main control box. ;
  • the battery boxes in each charging circuit are connected in series to supply power to the load;
  • the power management system also includes:
  • the charging current is connected to each BMS sub-control box and the vehicle end control system for detecting the series circuit of the battery box, and the charging demand is determined according to the charging state sent by each BMS sub-control box, and the charging state and the charging demand are passed through the vehicle end.
  • the control system sends the BMS main control box to the ground control system;
  • a vehicle end control system for performing information interaction between the BMS main control box and the ground control system
  • a ground control system that wirelessly communicates with the vehicle end control system and is coupled to each of the terrestrial transmitting circuits for controlling the output power of each of the terrestrial transmitting circuits in accordance with the state of charge and charging requirements.
  • ground transmitting circuit and the vehicle receiving device can be respectively integrated into modules, adopting modularized and standardized design, which is convenient for subsequent production, use and maintenance.
  • the specific number here is specifically one. Of course, other values may be used.
  • the number of battery boxes included in each group of charging circuits is not specifically limited in the present invention, and the number of charging circuits is also determined by the grouping of the battery packs. set.
  • the LEM in Figure 2 is a current sensor, the current sensor has a circular hole, the cable for measuring current is to pass through the circular hole, and the current sensor is connected with the BMS sub-control box to obtain the current of the corresponding battery box. .
  • the vehicle end receiving circuit respectively connects each of the battery boxes in the group through a sub relay;
  • the BMS sub-control box in each group of charging circuits is electrically connected to each sub-relay in the group, and the BMS sub-control box controls the corresponding sub-relay to open and close according to the corresponding command sent by the BMS main control box.
  • the sub-relay is not set, as long as the ground transmitting circuit starts to supply power, the corresponding battery box will always be in the charging state. In order to further improve the safety during the power supply process, it is convenient for subsequent detection and maintenance, and it is necessary to be in the vehicle end.
  • a sub-relay is provided between the receiving device and the corresponding battery box.
  • the sub-relays preferably correspond to the battery boxes one by one. Of course, only one sub-relay can be provided in each charging circuit. It is used to simultaneously control the on-off of the vehicle end receiving circuit and each battery box in the group, and the specific method is not limited in the present invention.
  • the battery boxes in the respective charging circuits are connected in series and then supply power to the load through the total relay;
  • the BMS main control box is electrically connected to the main relay to control the opening and closing of the main relay.
  • each BMS sub-control box is connected to the BMS main control box through the car CAN bus.
  • FIG. 3 is a schematic structural diagram of another power management system based on radio energy transmission according to the present invention.
  • each ground transmitting circuit and a corresponding BMS sub-control box are disposed between A wireless data communication device for transmitting a state of charge obtained by a BMS sub-control box to a corresponding ground transmitting circuit.
  • the BMS sub-control box and the ground transmitting circuit It can directly communicate and adjust the transmission power of the ground transmitting circuit without speeding up the power adjustment speed of the ground transmitting circuit through the BMS main control box, the vehicle control system and the ground control system.
  • the ground transmitting circuit specifically includes:
  • a Power Factor Correction (PFC) circuit a High frequency inverter power supply, a transmission compensation circuit, and a transmitting coil are sequentially connected in series, wherein an input end of the power factor correction circuit is connected to the power grid, and a transmitting coil is connected between the transmitting coil and the vehicle receiving circuit.
  • PFC Power Factor Correction
  • vehicle receiving circuit specifically includes:
  • the receiving coil, the receiving compensation circuit and the rectifying circuit are sequentially connected in series, wherein wireless energy transmission is performed between the receiving coil and the transmitting coil, and the rectifying circuit is connected to the battery box to supply power to the battery box.
  • the invention provides a power management system based on radio energy transmission, comprising a BMS main control box, a vehicle end control system, a ground control system and a plurality of charging circuits, each set of charging circuit comprising a ground transmitting circuit and a vehicle receiving circuit
  • the specific number of battery boxes and the BMS sub-control box that is, the invention divides the whole vehicle battery pack into a plurality of groups, each group includes a specific number of battery boxes, and each group of battery boxes corresponds to a group of charging circuits, and the structure is reduced.
  • the charging voltage of each group of battery boxes since each group of charging circuits only needs to charge a group of battery boxes, the present invention reduces the charging circuit in comparison with the prior art system in which a charging circuit charges the entire vehicle battery pack. The voltage reduces the risk during system development and experimentation, and reduces the requirements for inverter power supplies and coils and associated equipment in the circuit, reducing system cost.
  • the present invention also provides a power management method based on radio energy transmission. Based on the power management system according to any of the above, see FIG. 4, FIG. 4 is a power management based on radio energy transmission provided by the present invention. Schematic diagram of the process of the method. The method includes:
  • Step s101 After receiving the charging command input by the user, the ground control system sends the charging command to the BMS main control box through the vehicle end control system;
  • Step s102 The BMS main control box sends the charging command to each BMS sub-control box separately, and completes the charging preparation according to the response fed back by the BMS sub-control box;
  • Step s103 After the preparation is completed, the ground control system controls each ground transmitting circuit to supply power to a corresponding group of battery boxes;
  • Step s104 During the charging process, the BMS sub-control box detects the charging state of a corresponding set of battery boxes in real time and sends them to the BMS main control box;
  • Step s105 the BMS main control box detects the current of the battery box series circuit, and determines the charging demand according to the charging status sent by each BMS sub-control box, and sends the charging status and the charging demand to the ground control system through the vehicle end control system;
  • Step s106 The ground control system adjusts the output power of each ground transmitting circuit according to the charging state and the charging demand control. When the charging state is charging completion, the ground control system controls the corresponding ground transmitting circuit to stop supplying power.
  • each group of charging circuits includes a battery box
  • Step s11 The ground control system receives a charging command input by the user
  • Step s12 the ground control system establishes a communication connection with the vehicle end control system, and wirelessly sends a charging command to the vehicle end control system;
  • Step s13 After receiving the charging command, the vehicle end control system starts to supply power to the BMS main control box and the BMS sub-control box, and establishes a software and hardware handshake signal with the BMS main control box, and sends a charging command to the BMS main control box;
  • Step s14 After receiving the charging command, the BMS main control box communicates with each BMS sub-control box, controls each BMS sub-control box to collect corresponding voltage and temperature information of the battery box and feeds back to itself, and performs self-test according to the information. After the self-test is passed, the BMS main control box respectively sends a charging command to all BMS sub-control boxes;
  • Step s15 after receiving the charging command, each BMS sub-control box controls the corresponding sub-relay to close, and feeds back the preparation completion information to the BMS main control box;
  • Step s16 After receiving the preparation completion information of all BMS sub-control boxes, the BMS main control box determines the charging voltage and the charging current demand of each battery box according to the state of the battery pack, and feeds back the charging preparation completion response and the charging requirements of each battery box. Give the car end control system;
  • Step s17 After receiving the charging preparation completion response and the charging requirements of each battery box, the vehicle end control system transmits the ground control system to the ground control system by means of wireless communication;
  • Step s18 The ground control system receives the charging preparation completion response and the charging of each battery box After the request, the charging requirements of each battery box are sent to the corresponding ground transmitting circuit, and the local transmitting circuit is controlled to start working, and the system enters the charging state.
  • Step s21 each BMS sub-control box detects the cell voltage, temperature and charging current information of the corresponding battery box in real time, and feeds back to the BMS main control box in real time;
  • Step s22 The BMS main control box calculates the charging demand of each battery box according to the information fed back by the BMS sub-control box, and wirelessly feeds back the charging demand of each battery box and the current charging current and voltage to the ground control system through the vehicle end control system in real time;
  • Step s23 the ground control system feeds back the charging demand and the current charging current and voltage to the local transmitting circuit in real time, and the local transmitting circuit adjusts the output power of the ground transmitting circuit in real time according to the charging demand of the corresponding battery box and the current charging current and voltage;
  • the output power adjustment process of the transmitting circuit is as follows: if the current charging voltage or current of the battery box is greater than the voltage or current required for charging, the corresponding ground transmitting circuit reduces the output power. If the current charging voltage or current of the battery box is less than the voltage or current required for charging, correspondingly The ground transmitting circuit increases the output power to ensure constant voltage or constant current charging of the battery box.
  • Step s31 When the BMS main control box determines that a certain battery box is full according to the BMS sub-control box information, the battery box full information is notified to the vehicle end control system;
  • Step s32 the vehicle end control system will be filled with information feedback ground control system
  • Step s33 The ground control system controls the corresponding ground transmitting circuit to stop working, and the corresponding ground transmitting circuit enters a standby state, and notifies the vehicle end control system of the standby state information;
  • Step s34 The vehicle end control system notifies the BMS main control box of the standby status information
  • Step s35 The BMS main control box notifies the corresponding BMS sub-control box of the standby information
  • Step s36 The BMS sub-control box controls the sub-relay of the corresponding battery box to be disconnected;
  • each BMS sub-control box has been controlled to disconnect the corresponding sub-relay; after that, the vehicle-end control system stops the power supply of the BMS main control box and the BMS sub-control box. At this point, the vehicle end control system also enters the standby state, and the entire system stops working and enters the standby state.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

一种基于无线电能传输的电源管理系统及方法，包括BMS主控盒、车端控制系统、地面控制系统以及多组充电电路；每组充电电路包括特定个数的电池箱，与电网连接的、用于发射能量的地面发射电路，用于接收能量并为本组内的电池箱供电的车端接收电路，车端接收电路分别连接本组内的各个电池箱，用于在充电过程中实时检测本组内的各个电池箱的充电状态并发送给BMS主控盒的BMS分控盒，BMS分控盒与BMS主控盒连接；各个充电电路内的电池箱串联后为负载供电。所述电源管理系统由多组充电电路为整车电池组充电，降低充电电路中的电压，进而降低系统研制及实验过程中的危险性以及对设备的要求，系统成本低。

Description

一种基于无线电能传输的电源管理系统及方法
本申请要求于2017年4月28日提交中国专利局、申请号为201710296139.9/201720464361.0、发明名称为“一种基于无线电能传输的电源管理系统及方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及无线充电技术领域，特别是涉及一种基于无线电能传输的电源管理系统及方法。
背景技术
无线电能传输技术由于解决了传统有线充电方式接触点易损耗、接插件笨重、存在漏电安全隐患等问题，因此，成为近期研究和开发的热点。
目前的无线充电电源管理系统如图1所示，图1为现有的无线电能传输的电源管理系统的结构示意图；车端接收电路直接给整车的电池组充电，由于整车电池组的工作电压可达750V，随着功率的增加工作电流也不断加大，故对逆变电源和线圈以及电路中配套设备具有较高的要求，目前行业标准元器件难以满足要求，相关设备的研制实现难度大。
并且，由于发射、接收电路中电流、电压非常高，在研制及实验无线充电电源管理系统的过程中具有较高的危险性。
因此，如何提供一种能够降低发射、接收电路中的电流、电压的基于无线电能传输的电源管理系统及方法是本领域技术人员目前需要解决的问题。
发明内容
本发明的目的是提供一种基于无线电能传输的电源管理系统及方法，由多组充电电路为整车电池组充电，降低充电电路中的电压，进而降低系统研制及实验过程中的危险性以及对设备的要求，系统成本低。
为解决上述技术问题，本发明提供了一种基于无线电能传输的电源管 理系统，包括：
多组充电电路，每组所述充电电路包括：
特定个数的电池箱；
与电网连接的、用于发射能量的地面发射电路；
用于接收能量并为本组内的电池箱供电的车端接收电路，所述车端接收电路分别连接本组内的各个电池箱；
用于在充电过程中实时检测本组内的各个电池箱的充电状态并发送给BMS主控盒的BMS分控盒，所述BMS分控盒与所述BMS主控盒连接；
其中，各个所述充电电路内的电池箱串联后为负载供电；
所述电源管理系统还包括：
分别与各个所述BMS分控盒以及车端控制系统连接的、用于检测电池箱串联回路的电流，以及依据各个所述BMS分控盒发送的充电状态确定充电需求，并将所述充电状态和充电需求通过所述车端控制系统发送至地面控制系统的所述BMS主控盒；
用于进行所述BMS主控盒与所述地面控制系统之间的信息交互的所述车端控制系统；
与所述车端控制系统无线通信且与各个所述地面发射电路连接的、用于依据所述充电状态和充电需求控制各个地面发射电路的的输出功率的所述地面控制系统。
优选地，所述车端接收电路分别通过一个分继电器连接本组内的各个电池箱；
每组所述充电电路内的所述BMS分控盒与本组内的各个所述分继电器电气相连，所述BMS分控盒依据所述BMS主控盒发送的相应指令控制对应的分继电器开闭。
优选地，各个所述充电电路内的电池箱串联后通过总继电器为负载供电；
所述BMS主控盒与所述总继电器电气相连，控制所述总继电器开闭。
优选地，所述特定个数具体为1个。
优选地，各个所述BMS分控盒通过车端CAN总线与所述BMS主控 盒连接。
优选地，每个所述地面发射电路与对应的BMS分控盒之间设置有无线数据通信设备，所述无线数据通信设备用于将所述BMS分控盒获得的充电状态发送至对应的地面发射电路。
优选地，所述地面发射电路具体包括：
依次串联的功率因数校正电路、高频逆变电源、发射补偿电路以及发射线圈，其中，所述功率因数校正电路的输入端连接所述电网，所述发射线圈与所述车端接收电路之间进行无线能量传输。
优选地，所述车端接收电路具体包括：
依次串联的接收线圈、接收补偿电路、整流电路，其中，所述接收线圈与所述发射线圈之间进行无线能量传输，所述整流电路连接电池箱为电池箱供电。
为解决上述技术问题，本发明还提供了一种基于无线电能传输的电源管理方法，基于以上任一项所述的电源管理系统，所述方法包括：
地面控制系统接收用户输入的充电命令后，通过车端控制系统将所述充电命令发送至BMS主控盒；
所述BMS主控盒将所述充电命令分别发送给各个BMS分控盒，并依据所述BMS分控盒反馈的响应完成充电准备；
准备完成后，所述地面控制系统控制各个地面发射电路分别为对应的一组电池箱供电；
充电过程中，所述BMS分控盒实时检测自身对应的一组电池箱的充电状态并发送给所述BMS主控盒；
所述BMS主控盒检测电池箱串联回路的电流，以及依据各个所述BMS分控盒发送的充电状态确定充电需求，并将所述充电状态和充电需求通过所述车端控制系统发送至所述地面控制系统；
所述地面控制系统依据所述充电状态和充电需求控制调整各个所述地面发射电路的输出功率，当所述充电状态为充电完成时，所述地面控制系统控制相应的所述地面发射电路停止供电。
本发明提供了一种基于无线电能传输的电源管理系统及方法，包括 BMS主控盒、车端控制系统、地面控制系统以及多组充电电路，每组充电电路包括一个地面发射电路、一个车端接收电路、特定数量的电池箱以及BMS分控盒，即本发明将整车电池组划分为多组，每组包括特定个数的电池箱，且每组电池箱对应一组充电电路，这种结构降低了每组电池箱的充电电压，由于每组充电电路仅需要为一组电池箱进行充电，相比现有技术中一组充电电路为整车电池组充电的系统，本发明降低了充电电路中的电压，从而降低了系统研制及实验过程中的危险性，且降低了对逆变电源和线圈以及电路中配套设备的要求，减少了系统成本。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为现有的无线电能传输的电源管理系统的结构示意图；
图2为本发明提供的一种基于无线电能传输的电源管理系统的结构示意图；
图3为本发明提供的另一种基于无线电能传输的电源管理系统的结构示意图；
图4为本发明提供的一种基于无线电能传输的电源管理方法的过程的示意图。
具体实施方式
本发明的核心是提供一种基于无线电能传输的电源管理系统及方法，由多组充电电路为整车电池组充电，降低充电电路中的电压，进而降低系统研制及实验过程中的危险性以及对设备的要求，系统成本低。
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本 发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明提供了一种基于无线电能传输的电源管理系统，参见图2所示，图2为本发明提供的一种基于无线电能传输的电源管理系统的结构示意图。该系统包括：
多组充电电路，每组充电电路包括：
特定个数的电池箱；
与电网连接的、用于发射能量的地面发射电路；
用于接收能量并为本组内的电池箱供电的车端接收电路，车端接收电路分别连接本组内的各个电池箱；
用于在充电过程中实时检测本组内的各个电池箱的充电状态并发送给BMS(Battery Management System，电池管理系统)主控盒的BMS分控盒，BMS分控盒与BMS主控盒连接；
其中，各个充电电路内的电池箱串联后为负载供电；
电源管理系统还包括：
分别与各个BMS分控盒以及车端控制系统连接的、用于检测电池箱串联回路的电流，以及依据各个BMS分控盒发送的充电状态确定充电需求，并将充电状态和充电需求通过车端控制系统发送至地面控制系统的BMS主控盒；
用于进行BMS主控盒与地面控制系统之间的信息交互的车端控制系统；
与车端控制系统无线通信且与各个地面发射电路连接的、用于依据充电状态和充电需求控制各个地面发射电路的的输出功率的地面控制系统。
可以理解的是，具体实现时，可将地面发射电路以及车端接收设备分别集成模块，采用模块化、标准化设计，便于后续进行生产、使用和维护。
另外，这里的特定个数具体为1个，当然，也可以为其他数值，每组充电电路包含的电池箱的个数本发明不作具体限定，充电电路的组数也视电池组的分组情况而定。
另外，图2中的LEM为电流传感器，电流传感器上有个圆孔，被测量电流的电缆要从圆孔穿过，电流传感器与BMS分控盒有信号连接，用于获取相应电池箱的电流。
作为优选地，车端接收电路分别通过一个分继电器连接本组内的各个电池箱；
每组充电电路内的BMS分控盒与本组内的各个分继电器电气相连，BMS分控盒依据BMS主控盒发送的相应指令控制对应的分继电器开闭。
可以理解的是，若不设置分继电器，则只要地面发射电路开始供电，相应的电池箱则会一直处于充电状态，为了进一步提高供电过程中的安全性，便于后续检测和维修，需要在车端接收设备与相应的电池箱之间设置分继电器。并且，由于不同电池箱的充电情况不一定相同，因此为了在电池箱充满时可以及时断电，分继电器优选与电池箱一一对应，当然，也可以在每个充电电路内仅设置一个分继电器，用于同时控制车端接收电路与本组内各个电池箱的通断，具体采用哪种方式本发明不作具体限定。
作为优选地，各个充电电路内的电池箱串联后通过总继电器为负载供电；
BMS主控盒与总继电器电气相连，控制总继电器开闭。
可以理解的是，电池箱是否为负载供电取决于负载需求，因此负载与电池箱串联电路之间需要设置一个总继电器作为开关。当然，也可采用其他开关类型，本发明对此不作具体限定。
其中，各个BMS分控盒通过车端CAN总线与BMS主控盒连接。
在优选实施例中，参见图3所示，图3为本发明提供的另一种基于无线电能传输的电源管理系统的结构示意图；每个地面发射电路与对应的BMS分控盒之间设置有无线数据通信设备，无线数据通信设备用于将BMS分控盒获得的充电状态发送至对应的地面发射电路。
可以理解的是，通过该种连接方式，BMS分控盒与地面发射电路之 间可直接通信，调整地面发射电路的发射功率，而不必通过BMS主控盒、车载控制系统和地面控制系统，加快了地面发射电路的功率调整速度。
具体的，地面发射电路具体包括：
依次串联的功率因数校正(Power Factor Correction，PFC)电路、高频逆变电源、发射补偿电路以及发射线圈，其中，功率因数校正电路的输入端连接电网，发射线圈与车端接收电路之间进行无线能量传输。
进一步可知，车端接收电路具体包括：
依次串联的接收线圈、接收补偿电路、整流电路，其中，接收线圈与发射线圈之间进行无线能量传输，整流电路连接电池箱为电池箱供电。
本发明提供了一种基于无线电能传输的电源管理系统，包括BMS主控盒、车端控制系统、地面控制系统以及多组充电电路，每组充电电路包括一个地面发射电路、一个车端接收电路、特定数量的电池箱以及BMS分控盒，即本发明将整车电池组划分为多组，每组包括特定个数的电池箱，且每组电池箱对应一组充电电路，这种结构降低了每组电池箱的充电电压，由于每组充电电路仅需要为一组电池箱进行充电，相比现有技术中一组充电电路为整车电池组充电的系统，本发明降低了充电电路中的电压，从而降低了系统研制及实验过程中的危险性，且降低了对逆变电源和线圈以及电路中配套设备的要求，减少了系统成本。
本发明还提供了一种基于无线电能传输的电源管理方法，基于以上任一项所述的电源管理系统，参见图4所示，图4为本发明提供的一种基于无线电能传输的电源管理方法的过程的示意图。该方法包括：
步骤s101：地面控制系统接收用户输入的充电命令后，通过车端控制系统将充电命令发送至BMS主控盒；
步骤s102：BMS主控盒将充电命令分别发送给各个BMS分控盒，并依据BMS分控盒反馈的响应完成充电准备；
步骤s103：准备完成后，地面控制系统控制各个地面发射电路分别为对应的一组电池箱供电；
步骤s104：充电过程中，BMS分控盒实时检测自身对应的一组电池箱的充电状态并发送给BMS主控盒；
步骤s105：BMS主控盒检测电池箱串联回路的电流，以及依据各个BMS分控盒发送的充电状态确定充电需求，并将充电状态和充电需求通过车端控制系统发送至地面控制系统；
步骤s106：地面控制系统依据充电状态和充电需求控制调整各个地面发射电路的输出功率，当充电状态为充电完成时，地面控制系统控制相应的地面发射电路停止供电。
为方便理解，以下为本发明提供的电源管理系统的一种具体工作流程(该实施例中每组充电电路内包含一个电池箱)：
启动阶段：
步骤s11：地面控制系统收到用户输入的充电命令；
步骤s12：地面控制系统与车端控制系统建立通信联系，并无线发送充电命令给车端控制系统；
步骤s13：车端控制系统接到充电命令后，开始为BMS主控盒和BMS分控盒供电，并与BMS主控盒建立软硬件握手信号，发送充电命令给BMS主控盒；
步骤s14：BMS主控盒接到充电命令后，与各个BMS分控盒进行通信，控制各个BMS分控盒收集对应的电池箱的电压和温度等信息反馈至自身，并依据这些信息进行自检，自检通过后，BMS主控盒分别发送充电命令给全部BMS分控盒；
步骤s15：各个BMS分控盒接到充电命令后，控制自身对应的分继电器闭合，并反馈准备完成信息给BMS主控盒；
步骤s16：BMS主控盒收到全部BMS分控盒的准备完成信息后，根据电池组的状态确定各个电池箱的充电电压、充电电流的需求，反馈充电准备完成响应和各电池箱的充电需求给车端控制系统；
步骤s17：车端控制系统接到充电准备完成响应和各电池箱的充电需求后，通过无线通信的方式发送给地面控制系统；
步骤s18：地面控制系统接到充电准备完成响应和各电池箱的充电需 求后，将各电池箱的充电需求发给相应的地面发射电路，并控制各地面发射电路开机工作，系统进入充电状态。
充电阶段：
步骤s21：各BMS分控盒实时检测相应的电池箱的单体电池电压、温度、充电电流信息，并实时反馈给BMS主控盒；
步骤s22：BMS主控盒根据BMS分控盒反馈的信息计算各电池箱的充电需求，并实时将各电池箱的充电需求和当前充电电流及电压通过车端控制系统无线反馈给地面控制系统；
步骤s23：地面控制系统实时将充电需求和当前充电电流及电压反馈给各地面发射电路，各地面发射电路根据相应电池箱的充电需求和当前充电电流及电压实时调节地面发射电路的输出功率；地面发射电路的输出功率调节过程如下：如果电池箱当前充电电压或电流大于充电需求的电压或电流，相应地面发射电路降低输出功率，如果电池箱当前充电电压或电流小于充电需求的电压或电流，相应地面发射电路提高输出功率，从而保证该电池箱实现恒压或恒流充电。
停止阶段：
步骤s31：当BMS主控盒根据BMS分控盒信息，判断某电池箱充满时，将该电池箱充满信息通知车端控制系统；
步骤s32：车端控制系统将充满信息反馈地面控制系统；
步骤s33：地面控制系统控制相应的地面发射电路停止工作，相应地面发射电路进入待机状态，并将待机状态信息通知车端控制系统；
步骤s34：车端控制系统将待机状态信息通知BMS主控盒；
步骤s35：BMS主控盒将该待机信息通知相应的BMS分控盒；
步骤s36：BMS分控盒控制相应电池箱的分继电器断开；
重复上述操作，直至各地面发射电路均进入待机状态，并且各BMS分控盒均已控制相应的分继电器断开；之后，车端控制系统停止BMS主控盒、BMS分控盒的供电电源，此时车端控制系统也进入待机状态，整个系统停止工作进入待机状态。
本说明书中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分互相参见即可。对于实施例公开的装置而言，由于其与实施例公开的方法相对应，所以描述的比较简单，相关之处参见方法部分说明即可。
还需要说明的是，在本说明书中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其他实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (9)

  1. 一种基于无线电能传输的电源管理系统，其特征在于，包括：
    多组充电电路，每组所述充电电路包括：
    特定个数的电池箱；
    与电网连接的、用于发射能量的地面发射电路；
    用于接收能量并为本组内的电池箱供电的车端接收电路，所述车端接收电路分别连接本组内的各个电池箱；
    用于在充电过程中实时检测本组内的各个电池箱的充电状态并发送给BMS主控盒的BMS分控盒，所述BMS分控盒与所述BMS主控盒连接；
    其中，各个所述充电电路内的电池箱串联后为负载供电；
    所述电源管理系统还包括：
    分别与各个所述BMS分控盒以及车端控制系统连接的、用于检测电池箱串联回路的电流，以及依据各个所述BMS分控盒发送的充电状态确定充电需求，并将所述充电状态和充电需求通过所述车端控制系统发送至地面控制系统的所述BMS主控盒；
    用于进行所述BMS主控盒与所述地面控制系统之间的信息交互的所述车端控制系统；
    与所述车端控制系统无线通信且与各个所述地面发射电路连接的、用于依据所述充电状态和充电需求控制各个地面发射电路的的输出功率的所述地面控制系统。
  2. 根据权利要求1所述的系统，其特征在于，所述车端接收电路分别通过一个分继电器连接本组内的各个电池箱；
    每组所述充电电路内的所述BMS分控盒与本组内的各个所述分继电器电气相连，所述BMS分控盒依据所述BMS主控盒发送的相应指令控制对应的分继电器开闭。
  3. 根据权利要求2所述的系统，其特征在于，各个所述充电电路内的电池箱串联后通过总继电器为负载供电；
    所述BMS主控盒与所述总继电器电气相连，控制所述总继电器开闭。
  4. 根据权利要求1-3任一项所述的系统，其特征在于，所述特定个数具体为1个。
  5. 根据权利要求1-3任一项所述的系统，其特征在于，各个所述BMS分控盒通过车端CAN总线与所述BMS主控盒连接。
  6. 根据权利要求1-3任一项所述的系统，其特征在于，每个所述地面发射电路与对应的BMS分控盒之间设置有无线数据通信设备，所述无线数据通信设备用于将所述BMS分控盒获得的充电状态发送至对应的地面发射电路。
  7. 根据权利要求1-3任一项所述的系统，其特征在于，所述地面发射电路具体包括：
    依次串联的功率因数校正电路、高频逆变电源、发射补偿电路以及发射线圈，其中，所述功率因数校正电路的输入端连接所述电网，所述发射线圈与所述车端接收电路之间进行无线能量传输。
  8. 根据权利要求7所述的系统，其特征在于，所述车端接收电路具体包括：
    依次串联的接收线圈、接收补偿电路、整流电路，其中，所述接收线圈与所述发射线圈之间进行无线能量传输，所述整流电路连接电池箱为电池箱供电。
  9. 一种基于无线电能传输的电源管理方法，其特征在于，基于权利要求1-7任一项所述的电源管理系统，所述方法包括：
    地面控制系统接收用户输入的充电命令后，通过车端控制系统将所述充电命令发送至BMS主控盒；
    所述BMS主控盒将所述充电命令分别发送给各个BMS分控盒，并依据所述BMS分控盒反馈的响应完成充电准备；
    准备完成后，所述地面控制系统控制各个地面发射电路分别为对应的一组电池箱供电；
    充电过程中，所述BMS分控盒实时检测自身对应的一组电池箱的充电状态并发送给所述BMS主控盒；
    所述BMS主控盒检测电池箱串联回路的电流，以及依据各个所述 BMS分控盒发送的充电状态确定充电需求，并将所述充电状态和充电需求通过所述车端控制系统发送至所述地面控制系统；
    所述地面控制系统依据所述充电状态和充电需求控制调整各个所述地面发射电路的输出功率，当所述充电状态为充电完成时，所述地面控制系统控制相应的所述地面发射电路停止供电。
PCT/CN2017/117878 2017-04-28 2017-12-22 一种基于无线电能传输的电源管理系统及方法 WO2018196411A1 (zh)

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CN103208835A (zh) * 2013-03-20 2013-07-17 中国科学院电工研究所 一种带无线充电的电池管理系统
CN205489631U (zh) * 2016-02-01 2016-08-17 河南理工大学 一种自动监控与切换的电动汽车无线充供电系统
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CN106911174A (zh) * 2017-04-28 2017-06-30 中惠创智无线供电技术有限公司 一种基于无线电能传输的电源管理系统及方法

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