WO2022142036A1 - Electric vehicle charging system and control method therefor - Google Patents

Electric vehicle charging system and control method therefor Download PDF

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Publication number
WO2022142036A1
WO2022142036A1 PCT/CN2021/091591 CN2021091591W WO2022142036A1 WO 2022142036 A1 WO2022142036 A1 WO 2022142036A1 CN 2021091591 W CN2021091591 W CN 2021091591W WO 2022142036 A1 WO2022142036 A1 WO 2022142036A1
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WO
WIPO (PCT)
Prior art keywords
battery
charging
charging device
control module
management system
Prior art date
Application number
PCT/CN2021/091591
Other languages
French (fr)
Chinese (zh)
Inventor
姜刚
杨培成
姜亚军
王绡
Original Assignee
雅迪科技集团有限公司
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Publication of WO2022142036A1 publication Critical patent/WO2022142036A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/60—Monitoring or controlling charging stations
    • B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • B60L58/22—Balancing the charge of battery modules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • 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
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the embodiments of the present application relate to the technical field of charging control, for example, to an electric vehicle charging system and a control method thereof.
  • An electric vehicle is a means of transportation that uses a battery as an energy source, and the battery is one of the most important components of an electric vehicle.
  • blind charging means that it has nothing to do with the state of the battery. After the charger is connected to the power supply, it directly outputs charging, which may cause damage to the battery such as overvoltage or overcurrent, and there are potential safety hazards.
  • the volume of the battery is large, charging is inconvenient, and the charging time is also increased.
  • Embodiments of the present application provide an electric vehicle charging system and a control method thereof, so as to solve the problems of potential safety hazards, inconvenient charging, and long charging time in the related art.
  • An embodiment of the present application provides an electric vehicle charging system, the system includes: a charging device and at least one battery assembly, the charging device includes a control module and a power module, and the battery assembly includes an electrically connected battery management system and a battery;
  • the battery management system is configured to collect battery operating parameters of the battery and output the battery operating parameters to the control module, where the battery operating parameters include real-time battery voltage and battery demand current;
  • the control module is configured to obtain the battery operating parameters sent by the battery management system, generate a power supply instruction according to the battery operating parameters, and then output the power supply instruction to the power module;
  • the power module is electrically connected to the control module, and the power module is configured to generate corresponding charging parameters according to the power supply instruction and charge the battery according to the charging parameters.
  • an embodiment of the present application further provides a control method for an electric vehicle charging system, the control method comprising:
  • the battery management system collects battery working parameters of the battery and outputs the battery working parameters to the control module, where the battery working parameters include real-time battery voltage and battery demand current;
  • the control module acquires the battery operating parameters sent by the battery management system, generates a power supply command according to the battery operating parameters, and outputs the power supply command to the power module;
  • the power module generates corresponding charging parameters according to the power supply instruction, and charges the battery according to the charging parameters.
  • FIG. 1 is a schematic structural diagram of an electric vehicle charging system provided in Embodiment 1 of the present application;
  • FIG. 2 is a flowchart of a control method of an electric vehicle charging system provided in Embodiment 2 of the present application.
  • FIG. 1 is a schematic structural diagram of an electric vehicle charging system provided in Embodiment 1 of the present application.
  • the technical solution of this embodiment is suitable for safe and intelligent charging.
  • the system can be implemented by software and/or hardware, and can be integrated in electric vehicles.
  • the electric vehicle charging system includes: a charging device 100 and at least one battery assembly 200 , the charging device 100 includes a control module 110 and a power module 120 , and the battery assembly 200 includes an electrically connected battery management system 210 and battery 220; the battery management system 210 is configured to collect battery operating parameters of the battery 220 and output the battery operating parameters to the control module 110, the battery operating parameters include the real-time battery voltage and battery demand current; the control module 110 is configured to obtain The battery operating parameters sent by the battery management system 210, and the power supply instructions are generated according to the battery operating parameters, and then output to the power module 120; the power module 120 is electrically connected to the control module 110, and the power module 120 is configured to generate corresponding charging parameters according to the power supply instructions And the battery 220 is charged according to the charging parameter.
  • the electric vehicle charging system includes a charging device 100 and at least one battery assembly 200.
  • the charging device 100 can only charge a single battery assembly 100, or can simultaneously charge multiple
  • the battery pack 200 is charged.
  • one battery pack is divided into multiple pieces. Each battery pack 200 is relatively small in size and convenient to carry. Through the charging device 100 , one or more battery packs 200 with low power and small size can be charged simultaneously in a targeted manner. Charging can shorten the charging time and realize portable charging.
  • the charging device 100 includes a control module 110 and a power module 120
  • the battery assembly 200 includes a battery management system 210 and a battery 220.
  • the charging device 100 and the battery assembly 200 can exchange information through the control module 110 and the battery management system 210 respectively, thereby realizing intelligent security Charge.
  • the battery management system 210 collects battery operating parameters such as the battery real-time battery voltage and battery demand current of the battery 220, and outputs the battery operating parameters to the control module 110 of the charging device 100, and the control module 110 obtains the battery operating parameters, and according to The battery operating parameters generate a power supply command and send it to the power module 120 .
  • the power module 120 generates charging parameters corresponding to the battery operating parameters and charges the battery 220 according to the power supply instruction.
  • the charging device 100 can output the corresponding charging parameters according to the actual charging requirements of the battery assembly 200 , which can avoid the harmful problems of overvoltage and overcurrent to the battery, and realize intelligent charging, so that the battery assembly 200 can be charged safely, efficiently and freely. environment to ensure safe and stable charging.
  • the communication mode between the control module 110 and the battery management system 210 can be selected according to requirements, for example, information exchange can be performed through CAN communication.
  • the way of determining the battery operating parameters can be set according to the actual situation. For example, since the voltage and current of the battery 220 will be affected by the ambient temperature and the service life of the battery, the battery management system 210 can be based on the ambient temperature and the battery 220. / or battery life and other parameters to determine battery operating parameters.
  • the electric vehicle charging system includes a charging device and at least one battery component, the charging device includes a control module and a power module, and the battery component includes a battery management system and a battery;
  • the battery management system collects the real-time battery voltage and battery demand of the battery Current and other battery working parameters and output the battery working parameters to the control module;
  • the control module obtains the battery working parameters sent by the battery management system, and generates a power supply command according to the battery working parameters, and then outputs the power supply command to the power module;
  • the power module according to the power supply command , generate the corresponding charging parameters and charge the battery according to the corresponding charging parameters.
  • the charging device can output corresponding charging parameters according to the actual charging requirements of the battery components, realize intelligent and safe charging, and support single-pack charging and multi-pack charging at the same time, which can shorten the charging time and realize portable charging. .
  • the battery management system 210 is further configured to retrieve the pre-stored battery basic information of the battery 220 and output the battery basic information to the control module; the control module 110 is further configured to retrieve the pre-stored charging device basic information of the charging device 100, When it is detected that the basic information of the charging device matches the basic information of the battery, it is determined that the pairing with the battery assembly 200 is successful, and then power is supplied to the battery assembly 200 through the power module 120; wherein the basic information of the charging device includes the charging device protocol version and the charging device identification code, Basic battery information includes battery protocol version and battery identification code.
  • the battery management system 210 pre-stores basic battery information of the battery 220.
  • the basic battery information includes the battery protocol version and the battery identification code.
  • the battery protocol version is the version used by the battery 220 to communicate with external devices, and the battery identification code is the battery 220.
  • the model of the battery 220 specifically includes information such as the rated voltage, rated current, and type of the battery 220.
  • the basic information of the charging device 100 is pre-stored in the control module 110.
  • the basic information of the charging device includes the protocol version of the charging device and the identification code of the charging device.
  • the protocol version of the charging device is the version used by the charging device 100 to communicate with external devices.
  • the identification code of the charging device It includes information such as voltage and current that the charging device 100 can output.
  • the charging device 100 acquires the basic information of the battery sent by the battery management system 210, and detects whether the basic information of the battery matches the basic information of the charging device.
  • the charging device 100 detects that the basic information of the charging device matches the basic information of the battery, it determines that the pairing with the battery assembly 200 is successful, and then supplies power to the battery assembly 200 through the power module 120; the charging device 100 detects that the basic information of the charging device does not match the basic information of the battery.
  • matching it is determined that the pairing with the battery assembly 200 fails, and the battery assembly 200 is not powered.
  • the charging device protocol version matches the battery protocol version, the parsed data information is consistent, and normal information exchange can be performed.
  • the identification code of the charging device matches the identification code of the battery, that is, the power supply capability of the charging device 100 matches the charging requirement of the battery assembly 200 , which can avoid damage to the battery such as overvoltage and overcurrent. It is determined that the charging device 100 and the battery assembly 200 are successfully paired, that is, the matching of the communication mode and the matching of the power supply capability and the charging requirement are realized, and then the battery assembly 200 is supplied with power to realize intelligent, safe and efficient charging.
  • the battery management system 210 can also acquire the basic information of the charging device sent by the control module 110, and when detecting that the basic information of the charging device matches the basic information of the battery, determine that the pairing with the charging device 100 is successful, and then allow the charging device 100 to charge the battery 220; When the battery management system 210 detects that the basic information of the charging device does not match the basic information of the battery, it determines that the pairing with the charging device 100 fails, and does not accept the charging of the charging device 100, thereby effectively realizing intelligent interactive charging.
  • the battery management system 210 is further configured to determine battery operating parameters according to at least one of the ambient temperature of the battery 220 and the load state of the battery 220 .
  • the voltage and current of the battery 220 are affected by the ambient temperature, and the required voltage and current are different under different ambient temperatures.
  • the battery demand current is also related to the load state of the battery 220. For example, while the charging device 100 is charging the battery 220, if the battery 220 is supplying power to the load, the charging current output by the charging device 100 is 10A, because the load will consume part of the power , the current actually obtained by the battery 220 is less than 10A.
  • the battery management system 210 will, based on the corresponding battery demand current when the battery 220 is unloaded, according to the load According to the actual power consumption, the battery demand current can be adaptively increased, so as to determine the battery operating parameters.
  • the battery management system 210 determines the battery operating parameters according to the ambient temperature of the battery 220 and/or the load state of the battery 220 , that is, in combination with the actual charging demand of the battery 220 , and reports it to the control module 110 of the charging device 100 , and the charging device 100 determines the battery operating parameters according to the battery 220 According to the actual charging requirements, the corresponding charging parameters are output to adapt to the optimal charging state of the battery 220 to realize intelligent interactive charging.
  • the battery operating parameters also include remaining power;
  • the control module 110 is configured to obtain the remaining power of the plurality of battery assemblies 200, and determine one or more target battery assemblies with the lowest remaining power, and generate the target battery assembly according to the remaining power of the target battery assembly.
  • the power supply command is outputted to the power module 120; the power module 120 is configured to generate corresponding charging parameters according to the power supply command, and supply power to the target battery assembly according to the corresponding charging parameters.
  • the control module 110 determines one or more target battery components with the lowest remaining power among the multiple battery components 200 according to the acquired remaining power of the multiple battery components 200 , and generates power supply Instructions are sent to the power module 120 .
  • the power module 120 preferentially supplies power to the target battery assembly with the lowest remaining power according to the power supply instruction, and supplies power to all the battery assemblies 200 together when the real-time power of the target battery assembly with low remaining power is consistent with the remaining power of other battery assemblies 200 .
  • This charging method can meet the charging requirements of different battery components, and at the same time can simplify the power supply process of the charging device.
  • the power of the battery assembly 200 during the charging process can be displayed by the power light bar on the charging device 100 .
  • the battery management system 210 is further configured to output the real-time current of the battery 220; the control module 110 is further configured to determine that the charging is abnormal and when it is detected that the real-time current and real-time voltage of the battery 220 are inconsistent with the charging parameters output by the power module 120.
  • the charging path between the charging device 100 and the battery 220 is cut off.
  • the control module 110 obtains the real-time current and real-time voltage of the battery 220 sent by the battery management system 210 , when the real-time current and real-time voltage of the battery 220 are detected, and the charging current and the charging voltage in the charging parameters output by the power module 120 If they do not match, it is determined that the charging is abnormal and the charging path is cut off.
  • the real-time current and real-time voltage of the battery 220 are inconsistent with the charging parameters output by the power module 120. The reason may be that the battery assembly 200 is faulty, the charging path has a leakage risk, or the information detection is abnormal, etc.
  • the charging path is cut off in time to protect the The charging circuit ensures the safe and reliable charging process.
  • the control module 110 determines that the charging is abnormal and cuts off the charging path, it can indicate through the fault indicator light on the surface of the charging device 100 to remind the user that the charging is abnormal.
  • the battery management system 210 is further configured to output the battery temperature of the battery 220 ; the control module 110 is further configured to cut off the charging path between the charging device 100 and the battery 220 when detecting that the battery temperature exceeds the first temperature threshold.
  • the control module 110 obtains the battery temperature through the battery management system 210 , and detects that the battery temperature is abnormal, that is, when the battery temperature exceeds a first temperature threshold, the charging path is cut off to prevent damage to the battery assembly 200 due to overtemperature. After the charging path is cut off, when the control module 110 detects that the battery temperature returns to normal, that is, when the battery temperature is lower than the first temperature threshold, the control module 110 can turn on the charging path and continue to supply power to the battery 220 .
  • the first temperature threshold may be set according to the model of the battery assembly 200 .
  • the charging device 100 further includes a communication module 130; the power module 120 is electrically connected to the communication module 130, and the power module 120 is further configured to output charging parameters to the battery management system 210 through the communication module 130; the battery management system 210 is further configured to detect When the real-time current and real-time voltage to the battery 220 are inconsistent with the charging parameters output by the power module 120 , it is determined that the charging is abnormal and the charging path between the battery 220 and the charging device 100 is cut off.
  • the charging device 100 further includes a communication module 130 , and the charging device 100 and the battery assembly 200 perform information exchange through the communication module 130 and the battery management system 210 respectively.
  • the power module 120 outputs the charging parameters to the battery management system 210 through the communication module 130 .
  • the battery management system 210 determines that the charging is abnormal and cuts off the charging path.
  • the real-time current and real-time voltage of the battery 220 are inconsistent with the charging parameters output by the power module 120.
  • the reason may be that the charging device 100 is faulty, the charging path has a leakage risk, etc.
  • the charging path is cut off in time, which can protect the charging circuit and prolong the The service life of the battery assembly 200 ensures that the charging process is safe and reliable.
  • control module 110 is further configured to output the charging device temperature of the charging device 100 to the battery management system 210; the battery management system 210 is further configured to cut off the battery 220 and the charging device 100 when detecting that the temperature of the charging device exceeds the second temperature threshold. charging path.
  • the battery management system 210 obtains the temperature of the charging device through the control module 110 , and detects that the temperature of the charging device is abnormal, that is, when the temperature of the charging device exceeds a second temperature threshold, the charging path is cut off to prevent the charging device 100 from overheating. After the charging path is cut off, the battery management system 210 may turn on the charging path and continue charging when it detects that the temperature of the charging device returns to normal, that is, when the temperature of the charging device is lower than the second temperature threshold.
  • the second temperature threshold can be set according to the actual situation.
  • control module 110 is further configured to detect whether the basic information of the charging device matches the basic information of the battery when it is determined that the access power of the charging device 100 is stable.
  • the stable and reliable connection of the charging device 100 is the basis for the information interaction between the charging device 100 and the battery assembly 200 .
  • the control module 110 Before charging, the control module 110 first detects whether the access power of the charging device 100 is stable, and after confirming that the charging device 100 is connected stably and reliably, it retrieves the pre-stored basic information of the charging device, and detects whether the basic information of the charging device and the basic information of the battery are not match.
  • the control module 110 can determine whether the charging device 100 is connected stably and reliably by detecting voltage signals such as switching signals or voltage division signals.
  • the electric vehicle charging system provided by the embodiment of the present application can output corresponding charging parameters according to the actual charging requirements of the battery components, realize intelligent and safe charging, and support single-pack charging and multi-pack charging at the same time, which can shorten the charging time and realize portable charging.
  • the normal communication between the charging device and the battery pack can be ensured.
  • the charging is performed, which can realize intelligent, safe and efficient charging. During the whole charging process, when it is determined that the charging is abnormal, the charging path is cut off in time, which can protect the charging circuit and ensure the safety and reliability of the charging process.
  • FIG. 2 is a flowchart of a control method of an electric vehicle charging system provided in Embodiment 2 of the present application.
  • the technical solution of this embodiment is applicable to the case of safe and intelligent charging.
  • the method may be executed by the electric vehicle charging system provided in any embodiment of the present application, and the system may be implemented by software and/or hardware, and may be integrated into the electric vehicle.
  • the electric vehicle charging system includes a charging device and at least one battery assembly, the charging device includes a control module and a power module, the battery assembly includes a battery management system and a battery that are electrically connected, and a control method for the electric vehicle charging system includes:
  • the battery management system collects and outputs battery working parameters of the battery, where the battery working parameters include the real-time battery voltage and the battery demand current;
  • control module obtains the battery working parameters sent by the battery management system, and generates a power supply command according to the battery working parameters, and then outputs the command to the power module;
  • the power module generates corresponding charging parameters and charges the battery according to the power supply instruction.
  • the battery working parameters such as the real-time battery voltage and the battery demand current of the battery are collected by the battery management system and output to the control module; the control module obtains the battery working parameters sent by the battery management system, The power supply command is generated according to the battery operating parameters, and then output to the power module; the power module generates corresponding charging parameters and charges the battery according to the power supply command.
  • the charging device can output the corresponding charging parameters according to the actual charging requirements of the battery components, realize intelligent and safe charging, and support single-pack charging and multi-pack charging at the same time, which can shorten the charging time and realize portable charging.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

An electric vehicle charging system and a control method therefor. The electric vehicle charging system comprises a charging device (100) and at least one battery assembly (200); the charging device (100) comprises a control module (110) and a power module (120); the battery assembly (200) comprises a battery management system (210) and a battery (220); the battery management system (210) is configured to acquire battery working parameters of the battery (220) and output the battery working parameters to the control module (110); the control module (110) is configured to acquire the battery working parameters sent by the battery management system (110), generate a power supply instruction according to the battery working parameters, and then output the power supply instruction to the power module (120); and the power module (120) is electrically connected to the control module (110), and the power module (120) is configured to generate a corresponding charging parameter according to the power supply instruction and charge the battery (220) according to the charging parameter.

Description

电动车充电***及其控制方法Electric vehicle charging system and control method thereof
本公开要求在2020年12月30日提交中国专利局、申请号为202011611628.7的中国专利申请的优先权，以上申请的全部内容通过引用结合在本公开中。The present disclosure claims the priority of a Chinese patent application with application number 202011611628.7 filed with the China Patent Office on December 30, 2020, the entire contents of which are incorporated in this disclosure by reference.
技术领域technical field
本申请实施例涉及充电控制技术领域，例如涉及一种电动车充电***及其控制方法。The embodiments of the present application relate to the technical field of charging control, for example, to an electric vehicle charging system and a control method thereof.
背景技术Background technique
随着科技的进步和社会的发展，电动车作为一种新能源绿色环保产品而受到人们的喜爱。电动车是一种以蓄电池为能源的交通工具，电池是电动车最重要的部件之一。With the advancement of science and technology and the development of society, electric vehicles are favored by people as a new energy green product. An electric vehicle is a means of transportation that uses a battery as an energy source, and the battery is one of the most important components of an electric vehicle.
随着市场和用户群体对于充电安全性与充电时长要求的持续提升，相关技术中的盲充方式已无法满足需求。盲充即与电池状态无关，充电器接入电源后直接输出充电，可能产生过压或过流等对电池的危害问题，存在安全隐患。此外，为了延长续航里程，电池的体积较大，充电不方便，且充电时长也随之增加。With the continuous improvement of the market and user groups' requirements for charging safety and charging time, the blind charging method in related technologies can no longer meet the demand. Blind charging means that it has nothing to do with the state of the battery. After the charger is connected to the power supply, it directly outputs charging, which may cause damage to the battery such as overvoltage or overcurrent, and there are potential safety hazards. In addition, in order to extend the cruising range, the volume of the battery is large, charging is inconvenient, and the charging time is also increased.
发明内容SUMMARY OF THE INVENTION
本申请实施例提供一种电动车充电***及其控制方法，以解决相关技术充电存在安全隐患、充电不方便及充电时长较长的问题。Embodiments of the present application provide an electric vehicle charging system and a control method thereof, so as to solve the problems of potential safety hazards, inconvenient charging, and long charging time in the related art.
本申请实施例提供了一种电动车充电***，该***包括：充电设备和至少一个电池组件，所述充电设备包括控制模块和功率模块，所述电池组件包括电连接的电池管理***和电池；An embodiment of the present application provides an electric vehicle charging system, the system includes: a charging device and at least one battery assembly, the charging device includes a control module and a power module, and the battery assembly includes an electrically connected battery management system and a battery;
所述电池管理***设置为采集所述电池的电池工作参数并将所述电池工作参数输出至所述控制模块，所述电池工作参数包括电池实时电压和电池需求电流；The battery management system is configured to collect battery operating parameters of the battery and output the battery operating parameters to the control module, where the battery operating parameters include real-time battery voltage and battery demand current;
所述控制模块设置为获取所述电池管理***发送的所述电池工作参数，并根据所述电池工作参数生成供电指令，再将所述供电指令输出至所述功率模块；The control module is configured to obtain the battery operating parameters sent by the battery management system, generate a power supply instruction according to the battery operating parameters, and then output the power supply instruction to the power module;
所述功率模块与所述控制模块电连接，所述功率模块设置为根据所述供电指令，生成相应的充电参数并根据所述充电参数给所述电池充电。The power module is electrically connected to the control module, and the power module is configured to generate corresponding charging parameters according to the power supply instruction and charge the battery according to the charging parameters.
基于同一发明构思，本申请实施例还提供了一种电动车充电***的控制方法，所述控制方法包括：Based on the same inventive concept, an embodiment of the present application further provides a control method for an electric vehicle charging system, the control method comprising:
电池管理***采集电池的电池工作参数并将所述电池工作参数输出至控制模块，所述电池工作参数包括电池实时电压和电池需求电流；The battery management system collects battery working parameters of the battery and outputs the battery working parameters to the control module, where the battery working parameters include real-time battery voltage and battery demand current;
控制模块获取所述电池管理***发送的所述电池工作参数，并根据所述电池工作参数生成供电指令，再将所述供电指令输出至功率模块；The control module acquires the battery operating parameters sent by the battery management system, generates a power supply command according to the battery operating parameters, and outputs the power supply command to the power module;
所述功率模块根据所述供电指令，生成相应的充电参数并根据所述充电参数给所述电池充电。The power module generates corresponding charging parameters according to the power supply instruction, and charges the battery according to the charging parameters.
附图说明Description of drawings
为了说明本申请实施例或相关技术中的技术方案，下面将对实施例或相关技术描述中所需要使用的附图做一简单地介绍。In order to illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or related technologies.
图1是本申请实施例一提供的一种电动车充电***的结构示意图；1 is a schematic structural diagram of an electric vehicle charging system provided in Embodiment 1 of the present application;
图2是本申请实施例二提供的一种电动车充电***的控制方法的流程图。FIG. 2 is a flowchart of a control method of an electric vehicle charging system provided in Embodiment 2 of the present application.
具体实施方式Detailed ways
以下将参照本申请实施例中的附图，通过实施方式描述本申请的技术方案。The technical solutions of the present application will be described below through embodiments with reference to the accompanying drawings in the embodiments of the present application.
实施例一Example 1
图1是本申请实施例一提供的一种电动车充电***的结构示意图，本实施例的技术方案适用于安全智能充电的情况，该***可以由软件和/或硬件的方式来实现，并可集成于电动车中。FIG. 1 is a schematic structural diagram of an electric vehicle charging system provided in Embodiment 1 of the present application. The technical solution of this embodiment is suitable for safe and intelligent charging. The system can be implemented by software and/or hardware, and can be integrated in electric vehicles.
如图1所示，本实施例提供的电动车充电***包括：充电设备100和至少一个电池组件200，充电设备100包括控制模块110和功率模块120，电池组件200包括电连接的电池管理***210和电池220；电池管理***210设置为采集电池220的电池工作参数并将所述电池工作参数输出至所述控制模块110，电池工作参数包括电池实时电压和电池需求电流；控制模块110设置为获取电池管理***210发送的电池工作参数，并根据电池工作参数生成供电指令，再输出至功率模块120；功率模块120与控制模块110电连接，功率模块120设置为根据供电指令，生成相应的充电参数并根据所述充电参数给电池220充电。As shown in FIG. 1 , the electric vehicle charging system provided in this embodiment includes: a charging device 100 and at least one battery assembly 200 , the charging device 100 includes a control module 110 and a power module 120 , and the battery assembly 200 includes an electrically connected battery management system 210 and battery 220; the battery management system 210 is configured to collect battery operating parameters of the battery 220 and output the battery operating parameters to the control module 110, the battery operating parameters include the real-time battery voltage and battery demand current; the control module 110 is configured to obtain The battery operating parameters sent by the battery management system 210, and the power supply instructions are generated according to the battery operating parameters, and then output to the power module 120; the power module 120 is electrically connected to the control module 110, and the power module 120 is configured to generate corresponding charging parameters according to the power supply instructions And the battery 220 is charged according to the charging parameter.
如图1所示，本实施例提供的电动车充电***包括充电设备100和至少一个电池组件200，充电设备100可以只给单个电池组件100充电，也可以通过外部扩展线路等方式同时给多个电池组件200充电。相关技术为了延长续航里程， 电池的体积需要做的较大，充电不方便，且充电时长也随之增加。本实施例将一个电池包拆分成多个，每个电池组件200的体积比较小，携带方便，可通过充电设备100针对性地同时给1个或多个电量低且体积小的电池组件200充电，可以缩短充电时长，实现便携充电。As shown in FIG. 1 , the electric vehicle charging system provided in this embodiment includes a charging device 100 and at least one battery assembly 200. The charging device 100 can only charge a single battery assembly 100, or can simultaneously charge multiple The battery pack 200 is charged. In the related art, in order to prolong the cruising range, the volume of the battery needs to be larger, which is inconvenient to charge, and the charging time is also increased accordingly. In this embodiment, one battery pack is divided into multiple pieces. Each battery pack 200 is relatively small in size and convenient to carry. Through the charging device 100 , one or more battery packs 200 with low power and small size can be charged simultaneously in a targeted manner. Charging can shorten the charging time and realize portable charging.
充电设备100包括控制模块110和功率模块120，电池组件200包括电池管理***210和电池220，充电设备100和电池组件200可以分别通过控制模块110和电池管理***210进行信息交互，从而实现智能安全充电。具体的，电池管理***210采集电池220的电池实时电压和电池需求电流等电池工作参数，并将该电池工作参数输出至充电设备100的控制模块110，控制模块110获取该电池工作参数，并根据电池工作参数生成供电指令，发送给功率模块120。功率模块120根据供电指令，生成与电池工作参数相应的充电参数并给电池220充电。通过信息交互，充电设备100可以根据电池组件200的实际充电需求输出相应的充电参数，可避免过压、过流等对电池的危害问题，实现智能充电，以便电池组件200处于安全高效自由的充电环境，保证充电安全和稳定。The charging device 100 includes a control module 110 and a power module 120, and the battery assembly 200 includes a battery management system 210 and a battery 220. The charging device 100 and the battery assembly 200 can exchange information through the control module 110 and the battery management system 210 respectively, thereby realizing intelligent security Charge. Specifically, the battery management system 210 collects battery operating parameters such as the battery real-time battery voltage and battery demand current of the battery 220, and outputs the battery operating parameters to the control module 110 of the charging device 100, and the control module 110 obtains the battery operating parameters, and according to The battery operating parameters generate a power supply command and send it to the power module 120 . The power module 120 generates charging parameters corresponding to the battery operating parameters and charges the battery 220 according to the power supply instruction. Through information exchange, the charging device 100 can output the corresponding charging parameters according to the actual charging requirements of the battery assembly 200 , which can avoid the harmful problems of overvoltage and overcurrent to the battery, and realize intelligent charging, so that the battery assembly 200 can be charged safely, efficiently and freely. environment to ensure safe and stable charging.
其中，控制模块110和电池管理***210的通讯方式，可根据需求选择，例如可以通过CAN通讯的方式进行信息交互。电池工作参数的确定方式，可根据实际情况设置，例如，由于电池220的电压和电流会受所处的环境温度以及电池使用寿命的影响，电池管理***210可以根据电池220所处的环境温度和/或电池使用寿命等参数确定电池工作参数。The communication mode between the control module 110 and the battery management system 210 can be selected according to requirements, for example, information exchange can be performed through CAN communication. The way of determining the battery operating parameters can be set according to the actual situation. For example, since the voltage and current of the battery 220 will be affected by the ambient temperature and the service life of the battery, the battery management system 210 can be based on the ambient temperature and the battery 220. / or battery life and other parameters to determine battery operating parameters.
本申请实施例提供的电动车充电***，包括充电设备和至少一个电池组件，充电设备包括控制模块和功率模块，电池组件包括电池管理***和电池；电池管理***采集电池的电池实时电压和电池需求电流等电池工作参数并将电池工作参数输出至控制模块；控制模块获取电池管理***发送的电池工作参数，并根据电池工作参数生成供电指令，再将供电指令输出至功率模块；功率模块根据供电指令，生成相应的充电参数并根据相应的充电参数给电池充电。本申请实施例提供的电动车充电***，充电设备可以根据电池组件的实际充电需求输出相应的充电参数，实现智能安全充电，同时支持单包充电和多包充电，可以缩短充电时长，实现便携充电。The electric vehicle charging system provided by the embodiment of the present application includes a charging device and at least one battery component, the charging device includes a control module and a power module, and the battery component includes a battery management system and a battery; the battery management system collects the real-time battery voltage and battery demand of the battery Current and other battery working parameters and output the battery working parameters to the control module; the control module obtains the battery working parameters sent by the battery management system, and generates a power supply command according to the battery working parameters, and then outputs the power supply command to the power module; the power module according to the power supply command , generate the corresponding charging parameters and charge the battery according to the corresponding charging parameters. In the electric vehicle charging system provided by the embodiment of the present application, the charging device can output corresponding charging parameters according to the actual charging requirements of the battery components, realize intelligent and safe charging, and support single-pack charging and multi-pack charging at the same time, which can shorten the charging time and realize portable charging. .
可选的，电池管理***210还设置为调取预存的电池220的电池基本信息并将电池基本信息输出至控制模块；控制模块110还设置为调取预存的充电设备100的充电设备基本信息，在检测到充电设备基本信息与电池基本信息匹配时，判定与电池组件200配对成功，再通过功率模块120给电池组件200供电； 其中，充电设备基本信息包括充电设备协议版本和充电设备辨识码，电池基本信息包括电池协议版本和电池辨识码。Optionally, the battery management system 210 is further configured to retrieve the pre-stored battery basic information of the battery 220 and output the battery basic information to the control module; the control module 110 is further configured to retrieve the pre-stored charging device basic information of the charging device 100, When it is detected that the basic information of the charging device matches the basic information of the battery, it is determined that the pairing with the battery assembly 200 is successful, and then power is supplied to the battery assembly 200 through the power module 120; wherein the basic information of the charging device includes the charging device protocol version and the charging device identification code, Basic battery information includes battery protocol version and battery identification code.
参考图1，电池管理***210中预存有电池220的电池基本信息，电池基本信息包括电池协议版本和电池辨识码，电池协议版本为电池220与外部设备通讯采用的版本，电池辨识码为电池220的型号，具体包括电池220的额定电压、额定电流和类型等信息。控制模块110中预存有充电设备100的充电设备基本信息，充电设备基本信息包括充电设备协议版本和充电设备辨识码，充电设备协议版本为充电设备100与外界设备通讯采用的版本，充电设备辨识码包括充电设备100可输出的电压和电流等信息。充电设备100获取电池管理***210发送的电池基本信息，并检测电池基本信息与充电设备基本信息是否匹配。充电设备100检测到充电设备基本信息与电池基本信息匹配时，判定与电池组件200配对成功，然后再通过功率模块120给电池组件200供电；充电设备100检测到充电设备基本信息与电池基本信息不匹配时，判定与电池组件200配对失败，不给电池组件200供电。充电设备协议版本与电池协议版本匹配时，解析的数据信息一致，才能进行正常的信息交互。充电设备辨识码与电池辨识码匹配，即充电设备100的供电能力与电池组件200的充电需求匹配，可避免过压、过流等对电池的危害问题。判定充电设备100与电池组件200配对成功，即实现通讯方式匹配，以及供电能力与充电需求的匹配，才给电池组件200供电，实现智能安全高效充电。Referring to FIG. 1, the battery management system 210 pre-stores basic battery information of the battery 220. The basic battery information includes the battery protocol version and the battery identification code. The battery protocol version is the version used by the battery 220 to communicate with external devices, and the battery identification code is the battery 220. The model of the battery 220 specifically includes information such as the rated voltage, rated current, and type of the battery 220. The basic information of the charging device 100 is pre-stored in the control module 110. The basic information of the charging device includes the protocol version of the charging device and the identification code of the charging device. The protocol version of the charging device is the version used by the charging device 100 to communicate with external devices. The identification code of the charging device It includes information such as voltage and current that the charging device 100 can output. The charging device 100 acquires the basic information of the battery sent by the battery management system 210, and detects whether the basic information of the battery matches the basic information of the charging device. When the charging device 100 detects that the basic information of the charging device matches the basic information of the battery, it determines that the pairing with the battery assembly 200 is successful, and then supplies power to the battery assembly 200 through the power module 120; the charging device 100 detects that the basic information of the charging device does not match the basic information of the battery. When matching, it is determined that the pairing with the battery assembly 200 fails, and the battery assembly 200 is not powered. When the charging device protocol version matches the battery protocol version, the parsed data information is consistent, and normal information exchange can be performed. The identification code of the charging device matches the identification code of the battery, that is, the power supply capability of the charging device 100 matches the charging requirement of the battery assembly 200 , which can avoid damage to the battery such as overvoltage and overcurrent. It is determined that the charging device 100 and the battery assembly 200 are successfully paired, that is, the matching of the communication mode and the matching of the power supply capability and the charging requirement are realized, and then the battery assembly 200 is supplied with power to realize intelligent, safe and efficient charging.
电池管理***210也可以获取控制模块110发送的充电设备基本信息，并在检测到充电设备基本信息与电池基本信息匹配时，判定与充电设备100配对成功，才允许充电设备100给电池220充电；电池管理***210检测到充电设备基本信息与电池基本信息不匹配时，判定与充电设备100配对失败，不接受充电设备100的充电，有效实现智能交互充电。The battery management system 210 can also acquire the basic information of the charging device sent by the control module 110, and when detecting that the basic information of the charging device matches the basic information of the battery, determine that the pairing with the charging device 100 is successful, and then allow the charging device 100 to charge the battery 220; When the battery management system 210 detects that the basic information of the charging device does not match the basic information of the battery, it determines that the pairing with the charging device 100 fails, and does not accept the charging of the charging device 100, thereby effectively realizing intelligent interactive charging.
可选的，电池管理***210还设置为根据电池220所处环境温度和电池220的负载状态中的至少之一，确定电池工作参数。Optionally, the battery management system 210 is further configured to determine battery operating parameters according to at least one of the ambient temperature of the battery 220 and the load state of the battery 220 .
参考图1，电池220的电压和电流会受所处环境温度影响，所处环境温度不同，需要的电压和电流不同。此外，电池需求电流也与电池220的负载状态相关，例如在充电设备100给电池220充电的同时，若电池220在给负载供电，充电设备100输出的充电电流为10A，由于负载会消耗部分电能，电池220实际得到的电流不足10A，因此若在给电池220充电时，电池220在给负载供电，电池管理***210会在电池220无负载状态下对应的电池需求电流的基础上， 根据负载的实际用电情况，适应性地提高电池需求电流，从而确定电池工作参数。电池管理***210根据电池220所处环境温度和/或电池220的负载状态，即结合电池220的实际充电需求确定电池工作参数，并上报给充电设备100的控制模块110，充电设备100根据电池220的实际充电需求，输出相应的充电参数，以适配电池220的最佳充电状态，实现智能交互充电。Referring to FIG. 1 , the voltage and current of the battery 220 are affected by the ambient temperature, and the required voltage and current are different under different ambient temperatures. In addition, the battery demand current is also related to the load state of the battery 220. For example, while the charging device 100 is charging the battery 220, if the battery 220 is supplying power to the load, the charging current output by the charging device 100 is 10A, because the load will consume part of the power , the current actually obtained by the battery 220 is less than 10A. Therefore, if the battery 220 is supplying power to the load when the battery 220 is being charged, the battery management system 210 will, based on the corresponding battery demand current when the battery 220 is unloaded, according to the load According to the actual power consumption, the battery demand current can be adaptively increased, so as to determine the battery operating parameters. The battery management system 210 determines the battery operating parameters according to the ambient temperature of the battery 220 and/or the load state of the battery 220 , that is, in combination with the actual charging demand of the battery 220 , and reports it to the control module 110 of the charging device 100 , and the charging device 100 determines the battery operating parameters according to the battery 220 According to the actual charging requirements, the corresponding charging parameters are output to adapt to the optimal charging state of the battery 220 to realize intelligent interactive charging.
可选的，电池工作参数还包括剩余电量；控制模块110是设置为获取多个电池组件200的剩余电量，并确定剩余电量最低的一个或多个目标电池组件，根据目标电池组件的剩余电量生成供电指令并将供电指令输出至功率模块120；功率模块120是设置为根据供电指令，生成相应的充电参数，并根据相应的充电参数给目标电池组件供电。Optionally, the battery operating parameters also include remaining power; the control module 110 is configured to obtain the remaining power of the plurality of battery assemblies 200, and determine one or more target battery assemblies with the lowest remaining power, and generate the target battery assembly according to the remaining power of the target battery assembly. The power supply command is outputted to the power module 120; the power module 120 is configured to generate corresponding charging parameters according to the power supply command, and supply power to the target battery assembly according to the corresponding charging parameters.
参考图1，控制模块110在给多个组件200供电时，根据获取的多个电池组件200的剩余电量，确定多个电池组件200中剩余电量最低的一个或多个目标电池组件，并生成供电指令发送给功率模块120。功率模块120根据供电指令，优先给剩余电量最低的目标电池组件供电，在剩余电量低的目标电池组件的实时电量与其他电池组件200的剩余电量一致时，再给所有电池组件200一起供电。此种充电方式，即可满足不同电池组件的充电需求，同时可以简化充电设备的供电过程。其中，充电过程中电池组件200的电量可以通过充电设备100上的电量灯条显示。Referring to FIG. 1 , when supplying power to multiple components 200 , the control module 110 determines one or more target battery components with the lowest remaining power among the multiple battery components 200 according to the acquired remaining power of the multiple battery components 200 , and generates power supply Instructions are sent to the power module 120 . The power module 120 preferentially supplies power to the target battery assembly with the lowest remaining power according to the power supply instruction, and supplies power to all the battery assemblies 200 together when the real-time power of the target battery assembly with low remaining power is consistent with the remaining power of other battery assemblies 200 . This charging method can meet the charging requirements of different battery components, and at the same time can simplify the power supply process of the charging device. The power of the battery assembly 200 during the charging process can be displayed by the power light bar on the charging device 100 .
可选的，电池管理***210还设置为输出电池220的实时电流；控制模块110还设置为在检测到电池220的实时电流和实时电压与功率模块120输出的充电参数不一致时，判定充电异常并切断充电设备100与电池220的充电路径。Optionally, the battery management system 210 is further configured to output the real-time current of the battery 220; the control module 110 is further configured to determine that the charging is abnormal and when it is detected that the real-time current and real-time voltage of the battery 220 are inconsistent with the charging parameters output by the power module 120. The charging path between the charging device 100 and the battery 220 is cut off.
参考图1，控制模块110获取电池管理***210发送的电池220的实时电流和实时电压，在检测到电池220的实时电流和实时电压，与功率模块120输出的充电参数中的充电电流和充电电压不一致时，判定充电异常并切断充电路径。电池220的实时电流和实时电压，与功率模块120输出的充电参数不一致，原因可能是电池组件200故障、充电路径存在漏电风险或者信息检测异常等，在判定充电异常时及时切断充电路径，可保护充电回路，确保充电过程安全可靠。其中，控制模块110判定充电异常并切断充电路径的同时，可以通过充电设备100表面的故障指示灯进行指示，以提醒用户充电异常。Referring to FIG. 1 , the control module 110 obtains the real-time current and real-time voltage of the battery 220 sent by the battery management system 210 , when the real-time current and real-time voltage of the battery 220 are detected, and the charging current and the charging voltage in the charging parameters output by the power module 120 If they do not match, it is determined that the charging is abnormal and the charging path is cut off. The real-time current and real-time voltage of the battery 220 are inconsistent with the charging parameters output by the power module 120. The reason may be that the battery assembly 200 is faulty, the charging path has a leakage risk, or the information detection is abnormal, etc. When it is determined that the charging is abnormal, the charging path is cut off in time to protect the The charging circuit ensures the safe and reliable charging process. Wherein, when the control module 110 determines that the charging is abnormal and cuts off the charging path, it can indicate through the fault indicator light on the surface of the charging device 100 to remind the user that the charging is abnormal.
可选的，电池管理***210还设置为输出电池220的电池温度；控制模块110还设置为在检测到电池温度超出第一温度阈值时，切断充电设备100与电池220的充电路径。Optionally, the battery management system 210 is further configured to output the battery temperature of the battery 220 ; the control module 110 is further configured to cut off the charging path between the charging device 100 and the battery 220 when detecting that the battery temperature exceeds the first temperature threshold.
参考图1，控制模块110通过电池管理***210获取电池温度，检测到电池温度异常即电池温度超过第一温度阈值时，切断充电路径，防止过温对电池组件200的危害。在充电路径切断后，控制模块110在检测到电池温度恢复正常即电池温度低于第一温度阈值时，可导通充电路径，继续给电池220供电。其中，第一温度阈值可根据电池组件200的型号设置。Referring to FIG. 1 , the control module 110 obtains the battery temperature through the battery management system 210 , and detects that the battery temperature is abnormal, that is, when the battery temperature exceeds a first temperature threshold, the charging path is cut off to prevent damage to the battery assembly 200 due to overtemperature. After the charging path is cut off, when the control module 110 detects that the battery temperature returns to normal, that is, when the battery temperature is lower than the first temperature threshold, the control module 110 can turn on the charging path and continue to supply power to the battery 220 . The first temperature threshold may be set according to the model of the battery assembly 200 .
可选的，充电设备100还包括通讯模块130；功率模块120与通讯模块130电连接，功率模块120还设置为通过通讯模块130输出充电参数至电池管理***210；电池管理***210还设置为检测到电池220的实时电流和实时电压与功率模块120输出的充电参数不一致时，判定充电异常并切断电池220与充电设备100的充电路径。Optionally, the charging device 100 further includes a communication module 130; the power module 120 is electrically connected to the communication module 130, and the power module 120 is further configured to output charging parameters to the battery management system 210 through the communication module 130; the battery management system 210 is further configured to detect When the real-time current and real-time voltage to the battery 220 are inconsistent with the charging parameters output by the power module 120 , it is determined that the charging is abnormal and the charging path between the battery 220 and the charging device 100 is cut off.
参考图1，充电设备100还包括通讯模块130，充电设备100和电池组件200分别通过通讯模块130和电池管理***210进行信息交互。功率模块120通过通讯模块130输出充电参数至电池管理***210。电池管理***210在检测到功率模块120输出的充电参数中的充电电流和充电电压，与电池220自身的实时电流和实时电压不一致时，判定充电异常并切断充电路径。电池220的实时电流和实时电压，与功率模块120输出的充电参数不一致，原因可能是充电设备100故障、充电路径存在漏电风险等，在判定充电异常时及时切断充电路径，可保护充电回路，延长电池组件200的使用寿命，确保充电过程安全可靠。Referring to FIG. 1 , the charging device 100 further includes a communication module 130 , and the charging device 100 and the battery assembly 200 perform information exchange through the communication module 130 and the battery management system 210 respectively. The power module 120 outputs the charging parameters to the battery management system 210 through the communication module 130 . When detecting that the charging current and charging voltage in the charging parameters output by the power module 120 are inconsistent with the real-time current and real-time voltage of the battery 220, the battery management system 210 determines that the charging is abnormal and cuts off the charging path. The real-time current and real-time voltage of the battery 220 are inconsistent with the charging parameters output by the power module 120. The reason may be that the charging device 100 is faulty, the charging path has a leakage risk, etc. When it is determined that the charging is abnormal, the charging path is cut off in time, which can protect the charging circuit and prolong the The service life of the battery assembly 200 ensures that the charging process is safe and reliable.
可选的，控制模块110还设置为输出充电设备100的充电设备温度至电池管理***210；电池管理***210还设置为检测到充电设备温度超过第二温度阈值时，切断电池220与充电设备100的充电路径。Optionally, the control module 110 is further configured to output the charging device temperature of the charging device 100 to the battery management system 210; the battery management system 210 is further configured to cut off the battery 220 and the charging device 100 when detecting that the temperature of the charging device exceeds the second temperature threshold. charging path.
参考图1，电池管理***210通过控制模块110获取充电设备温度，检测到充电设备温度异常即充电设备温度超过第二温度阈值时，切断充电路径，防止充电设备100过温。在充电路径切断后，电池管理***210在检测到充电设备温度恢复正常即充电设备温度低于第二温度阈值时，可导通充电路径，继续充电。其中，第二温度阈值可根据实际情况设置。Referring to FIG. 1 , the battery management system 210 obtains the temperature of the charging device through the control module 110 , and detects that the temperature of the charging device is abnormal, that is, when the temperature of the charging device exceeds a second temperature threshold, the charging path is cut off to prevent the charging device 100 from overheating. After the charging path is cut off, the battery management system 210 may turn on the charging path and continue charging when it detects that the temperature of the charging device returns to normal, that is, when the temperature of the charging device is lower than the second temperature threshold. Wherein, the second temperature threshold can be set according to the actual situation.
可选的，控制模块110还设置为当判定充电设备100的接入电源稳定时，再检测充电设备基本信息与电池基本信息是否匹配。Optionally, the control module 110 is further configured to detect whether the basic information of the charging device matches the basic information of the battery when it is determined that the access power of the charging device 100 is stable.
参考图1，充电设备100的稳定可靠连接，是充电设备100与电池组件200进行信息交互的基础。在充电前，控制模块110先检测充电设备100的接入电源是否稳定，在确认充电设备100稳定可靠连接后，再调取预存的充电设备基本信息，并检测充电设备基本信息与电池基本信息是否匹配。其中，控制模块 110可以通过检测开关信号或分压信号等电压信号的方式，判断充电设备100是否稳定可靠连接。Referring to FIG. 1 , the stable and reliable connection of the charging device 100 is the basis for the information interaction between the charging device 100 and the battery assembly 200 . Before charging, the control module 110 first detects whether the access power of the charging device 100 is stable, and after confirming that the charging device 100 is connected stably and reliably, it retrieves the pre-stored basic information of the charging device, and detects whether the basic information of the charging device and the basic information of the battery are not match. The control module 110 can determine whether the charging device 100 is connected stably and reliably by detecting voltage signals such as switching signals or voltage division signals.
本申请实施例提供的电动车充电***，可以根据电池组件的实际充电需求输出相应的充电参数，实现智能安全充电，同时支持单包充电和多包充电，可以缩短充电时长，实现便携充电。此外，通过确认充电设备的稳定可靠连接，可确保充电设备与电池组件的正常通讯。在一实施例中，在匹配充电设备与电池组件的通讯方式，以及匹配供电能力与充电需求后，再进行充电，可实现智能安全高效充电。在整个充电过程中，判定充电异常时及时切断充电路径，可保护充电回路，确保充电过程安全可靠。The electric vehicle charging system provided by the embodiment of the present application can output corresponding charging parameters according to the actual charging requirements of the battery components, realize intelligent and safe charging, and support single-pack charging and multi-pack charging at the same time, which can shorten the charging time and realize portable charging. In addition, by confirming the stable and reliable connection of the charging device, the normal communication between the charging device and the battery pack can be ensured. In one embodiment, after matching the communication method between the charging device and the battery assembly, as well as matching the power supply capability and the charging requirement, the charging is performed, which can realize intelligent, safe and efficient charging. During the whole charging process, when it is determined that the charging is abnormal, the charging path is cut off in time, which can protect the charging circuit and ensure the safety and reliability of the charging process.
实施例二Embodiment 2
图2是本申请实施例二提供的一种电动车充电***的控制方法的流程图，本实施例的技术方案适用于安全智能充电的情况。该方法可以由本申请任意实施例提供的电动车充电***来执行，该***可以由软件和/或硬件的方式来实现，并可集成于电动车中。FIG. 2 is a flowchart of a control method of an electric vehicle charging system provided in Embodiment 2 of the present application. The technical solution of this embodiment is applicable to the case of safe and intelligent charging. The method may be executed by the electric vehicle charging system provided in any embodiment of the present application, and the system may be implemented by software and/or hardware, and may be integrated into the electric vehicle.
本实施例提供的电动车充电***，包括充电设备和至少一个电池组件，充电设备包括控制模块和功率模块，电池组件包括电连接的电池管理***和电池，该电动车充电***的控制方法包括：The electric vehicle charging system provided in this embodiment includes a charging device and at least one battery assembly, the charging device includes a control module and a power module, the battery assembly includes a battery management system and a battery that are electrically connected, and a control method for the electric vehicle charging system includes:
S210、电池管理***采集电池的电池工作参数并输出，电池工作参数包括电池实时电压和电池需求电流；S210, the battery management system collects and outputs battery working parameters of the battery, where the battery working parameters include the real-time battery voltage and the battery demand current;
S220、控制模块获取电池管理***发送的电池工作参数，并根据电池工作参数生成供电指令，再输出至功率模块；S220, the control module obtains the battery working parameters sent by the battery management system, and generates a power supply command according to the battery working parameters, and then outputs the command to the power module;
S230、功率模块根据供电指令，生成相应的充电参数并给电池充电。S230, the power module generates corresponding charging parameters and charges the battery according to the power supply instruction.
本申请实施例提供的电动车充电***的控制方法，通过电池管理***采集电池的电池实时电压和电池需求电流等电池工作参数并输出至控制模块；控制模块获取电池管理***发送的电池工作参数，并根据电池工作参数生成供电指令，再输出至功率模块；功率模块根据供电指令，生成相应的充电参数并给电池充电。充电设备可以根据电池组件的实际充电需求输出相应的充电参数，实现智能安全充电，同时支持单包充电和多包充电，可以缩短充电时长，实现便携充电。In the control method of the electric vehicle charging system provided by the embodiment of the present application, the battery working parameters such as the real-time battery voltage and the battery demand current of the battery are collected by the battery management system and output to the control module; the control module obtains the battery working parameters sent by the battery management system, The power supply command is generated according to the battery operating parameters, and then output to the power module; the power module generates corresponding charging parameters and charges the battery according to the power supply command. The charging device can output the corresponding charging parameters according to the actual charging requirements of the battery components, realize intelligent and safe charging, and support single-pack charging and multi-pack charging at the same time, which can shorten the charging time and realize portable charging.

Claims (10)

  1. 一种电动车充电***，包括：充电设备和至少一个电池组件，所述充电设备包括控制模块和功率模块，所述电池组件包括电连接的电池管理***和电池；An electric vehicle charging system includes: a charging device and at least one battery assembly, the charging device includes a control module and a power module, and the battery assembly includes an electrically connected battery management system and a battery;
    所述电池管理***设置为采集所述电池的电池工作参数并将所述电池工作参数输出至所述控制模块，所述电池工作参数包括电池实时电压和电池需求电流；The battery management system is configured to collect battery operating parameters of the battery and output the battery operating parameters to the control module, where the battery operating parameters include real-time battery voltage and battery demand current;
    所述控制模块设置为获取所述电池管理***发送的所述电池工作参数，并根据所述电池工作参数生成供电指令，再将所述供电指令输出至所述功率模块；The control module is configured to obtain the battery operating parameters sent by the battery management system, generate a power supply instruction according to the battery operating parameters, and then output the power supply instruction to the power module;
    所述功率模块与所述控制模块电连接，所述功率模块设置为根据所述供电指令，生成相应的充电参数并根据所述充电参数给所述电池充电。The power module is electrically connected to the control module, and the power module is configured to generate corresponding charging parameters according to the power supply instruction and charge the battery according to the charging parameters.
  2. 根据权利要求1所述的电动车充电***，其中，The electric vehicle charging system according to claim 1, wherein,
    所述电池管理***还设置为调取预存的所述电池的电池基本信息并将所述电池基本信息输出至所述控制模块；The battery management system is further configured to retrieve the pre-stored battery basic information of the battery and output the battery basic information to the control module;
    所述控制模块还设置为调取预存的所述充电设备的充电设备基本信息，基于所述充电设备基本信息与所述电池基本信息相匹配的检测结果，通过所述功率模块给所述电池组件供电；The control module is further configured to retrieve the pre-stored basic information of the charging device, and based on the detection result that the basic information of the charging device matches the basic information of the battery, the power module provides the battery assembly with the basic information of the charging device. powered by;
    其中，所述充电设备基本信息包括充电设备协议版本和充电设备辨识码，所述电池基本信息包括电池协议版本和电池辨识码。Wherein, the basic information of the charging device includes the protocol version of the charging device and the identification code of the charging device, and the basic information of the battery includes the version of the battery protocol and the identification code of the battery.
  3. 根据权利要求1所述的电动车充电***，其中，所述电池管理***还设置为根据所述电池所处环境温度和所述电池的负载状态中的至少之一，确定所述电池工作参数。The electric vehicle charging system according to claim 1, wherein the battery management system is further configured to determine the battery operating parameter according to at least one of an ambient temperature of the battery and a load state of the battery.
  4. 根据权利要求1所述的电动车充电***，其中，所述电池工作参数还包括剩余电量；The electric vehicle charging system according to claim 1, wherein the battery operating parameters further include remaining power;
    所述控制模块是设置为获取多个所述电池组件的剩余电量，并确定多个所述电池组件的剩余电量中最低的一个或多个目标电池组件，根据所述目标电池组件的剩余电量生成供电指令，再将所述供电指令输出至所述功率模块；The control module is configured to obtain the remaining power of a plurality of the battery assemblies, and determine one or more target battery assemblies with the lowest remaining power of the plurality of battery assemblies, and generate the target battery assembly according to the remaining power of the target battery assembly. a power supply command, and then output the power supply command to the power module;
    所述功率模块是设置为根据所述供电指令，生成相应的充电参数并根据所述充电参数给所述目标电池组件供电。The power module is configured to generate corresponding charging parameters according to the power supply instruction and supply power to the target battery assembly according to the charging parameters.
  5. 根据权利要求1所述的电动车充电***，其中，The electric vehicle charging system according to claim 1, wherein,
    所述电池管理***还设置为输出所述电池的实时电流至所述控制模块；The battery management system is further configured to output the real-time current of the battery to the control module;
    所述控制模块还设置为基于所述电池的实时电流和所述实时电压与所述功率模块输出的所述充电参数不一致的检测结果，判定充电异常并切断所述充电 设备与所述电池的充电路径。The control module is further configured to determine that the charging is abnormal and cut off the charging of the charging device and the battery based on the detection result that the real-time current and the real-time voltage of the battery are inconsistent with the charging parameters output by the power module. path.
  6. 根据权利要求1所述的电动车充电***，其中，The electric vehicle charging system according to claim 1, wherein,
    所述电池管理***还设置为输出所述电池的电池温度至所述控制模块；The battery management system is further configured to output the battery temperature of the battery to the control module;
    所述控制模块还设置为基于所述电池温度超出第一温度阈值的检测结果，切断所述充电设备与所述电池的充电路径。The control module is further configured to cut off the charging path between the charging device and the battery based on the detection result that the battery temperature exceeds a first temperature threshold.
  7. 根据权利要求1所述的电动车充电***，其中，所述充电设备还包括通讯模块；The electric vehicle charging system according to claim 1, wherein the charging device further comprises a communication module;
    所述功率模块与所述通讯模块电连接，所述功率模块还设置为通过所述通讯模块输出所述充电参数至所述电池管理***；The power module is electrically connected with the communication module, and the power module is further configured to output the charging parameter to the battery management system through the communication module;
    所述电池管理***还设置为基于所述电池的实时电流和所述实时电压与所述功率模块输出的所述充电参数不一致的检测结果，判定充电异常并切断所述电池与所述充电设备的充电路径。The battery management system is further configured to, based on the detection result of the inconsistency between the real-time current and the real-time voltage of the battery and the charging parameter output by the power module, determine that charging is abnormal and cut off the connection between the battery and the charging device. charging path.
  8. 根据权利要求1所述的电动车充电***，其中，The electric vehicle charging system according to claim 1, wherein,
    所述控制模块还设置为输出所述充电设备的充电设备温度至所述电池管理***；The control module is further configured to output the charging device temperature of the charging device to the battery management system;
    所述电池管理***还设置为基于所述充电设备温度超过第二温度阈值的检测结果，切断所述电池与所述充电设备的充电路径。The battery management system is further configured to cut off the charging path between the battery and the charging device based on the detection result that the temperature of the charging device exceeds a second temperature threshold.
  9. 根据权利要求2所述的电动车充电***，其中，所述控制模块还设置为基于所述充电设备的接入电源稳定的判定结果，检测所述充电设备基本信息与所述电池基本信息是否匹配。The electric vehicle charging system according to claim 2, wherein the control module is further configured to detect whether the basic information of the charging device matches the basic information of the battery based on a determination result that the power supply of the charging device is stable .
  10. 一种如权利要求1-9中任一项所述的电动车充电***的控制方法，其中，所述控制方法包括：A control method for an electric vehicle charging system according to any one of claims 1-9, wherein the control method comprises:
    电池管理***采集电池的电池工作参数并将所述电池工作参数输出至控制模块，所述电池工作参数包括电池实时电压和电池需求电流；The battery management system collects battery working parameters of the battery and outputs the battery working parameters to the control module, where the battery working parameters include real-time battery voltage and battery demand current;
    控制模块获取所述电池管理***发送的所述电池工作参数，并根据所述电池工作参数生成供电指令，再将所述供电指令输出至功率模块；The control module acquires the battery operating parameters sent by the battery management system, generates a power supply command according to the battery operating parameters, and outputs the power supply command to the power module;
    所述功率模块根据所述供电指令，生成相应的充电参数并根据所述充电参数给所述电池充电。The power module generates corresponding charging parameters according to the power supply instruction, and charges the battery according to the charging parameters.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115986880A (en) * 2023-01-06 2023-04-18 中国铁塔股份有限公司 Charging method and charging circuit
CN116317034A (en) * 2023-05-19 2023-06-23 深圳市美矽微半导体有限公司 Charging control system in charging chip
CN117048408A (en) * 2023-08-09 2023-11-14 盐城工学院 Intelligent management system for bidirectional charging of electric automobile
CN117277499A (en) * 2023-09-28 2023-12-22 深圳航天科创泛在电气有限公司 Charging management method and device based on distributed bidirectional inverter power system

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112677806A (en) * 2020-12-30 2021-04-20 上海雅迪信息技术有限公司 Electric vehicle charging system and control method thereof
CN113884891A (en) * 2021-11-03 2022-01-04 广西电网有限责任公司北海供电局 Storage battery fault control system
CN114295986A (en) * 2021-12-03 2022-04-08 广西电网有限责任公司北海供电局 Storage battery state monitoring module
CN116054344B (en) * 2023-01-31 2024-03-19 铁塔能源有限公司 Battery power control method and device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106740213A (en) * 2016-12-29 2017-05-31 西安特锐德智能充电科技有限公司 The charging method and device of active defense under a kind of electric automobile multiple gun charge mode
CN108248434A (en) * 2018-01-31 2018-07-06 北京国能电池科技股份有限公司 Electric vehicle charge control method and device
CN109228907A (en) * 2018-07-16 2019-01-18 西安特锐德智能充电科技有限公司 The DC charging control method of electric car and high-power group's charging system
CN110816359A (en) * 2019-11-20 2020-02-21 上海度普新能源科技有限公司 Charging control method and device, battery management system and electric vehicle
WO2020186357A1 (en) * 2019-03-19 2020-09-24 Ossiaco Inc. Ev charger with adaptable charging protocol
CN112677806A (en) * 2020-12-30 2021-04-20 上海雅迪信息技术有限公司 Electric vehicle charging system and control method thereof

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101740837B (en) * 2009-12-25 2012-01-04 天津清源电动车辆有限责任公司 Control method for vehicle-mounted charge and quick charge of electric automobiles
US20120173074A1 (en) * 2011-01-03 2012-07-05 Christopher Charles Yasko Monitoring systems and methods for providing remote notification of an electric vehicle status to a user
JP5304844B2 (en) * 2011-05-24 2013-10-02 トヨタ自動車株式会社 Battery charge control device
CN109159718A (en) * 2018-09-10 2019-01-08 智车优行科技（上海）有限公司 The display methods of battery level information, vehicle charging system, vehicle in vehicle
CN110816302A (en) * 2019-10-23 2020-02-21 无锡赛盈动力科技有限公司 Charging control method for multi-module intelligent driving system of large and medium power electric vehicle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106740213A (en) * 2016-12-29 2017-05-31 西安特锐德智能充电科技有限公司 The charging method and device of active defense under a kind of electric automobile multiple gun charge mode
CN108248434A (en) * 2018-01-31 2018-07-06 北京国能电池科技股份有限公司 Electric vehicle charge control method and device
CN109228907A (en) * 2018-07-16 2019-01-18 西安特锐德智能充电科技有限公司 The DC charging control method of electric car and high-power group's charging system
WO2020186357A1 (en) * 2019-03-19 2020-09-24 Ossiaco Inc. Ev charger with adaptable charging protocol
CN110816359A (en) * 2019-11-20 2020-02-21 上海度普新能源科技有限公司 Charging control method and device, battery management system and electric vehicle
CN112677806A (en) * 2020-12-30 2021-04-20 上海雅迪信息技术有限公司 Electric vehicle charging system and control method thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115986880A (en) * 2023-01-06 2023-04-18 中国铁塔股份有限公司 Charging method and charging circuit
CN115986880B (en) * 2023-01-06 2024-05-10 铁塔能源有限公司 Charging method and charging circuit
CN116317034A (en) * 2023-05-19 2023-06-23 深圳市美矽微半导体有限公司 Charging control system in charging chip
CN117048408A (en) * 2023-08-09 2023-11-14 盐城工学院 Intelligent management system for bidirectional charging of electric automobile
CN117048408B (en) * 2023-08-09 2024-04-05 盐城工学院 Intelligent management system for bidirectional charging of electric automobile
CN117277499A (en) * 2023-09-28 2023-12-22 深圳航天科创泛在电气有限公司 Charging management method and device based on distributed bidirectional inverter power system

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