WO2022032439A1 - 充电电路、装置以及电动汽车 - Google Patents

充电电路、装置以及电动汽车 Download PDF

Info

Publication number
WO2022032439A1
WO2022032439A1 PCT/CN2020/108238 CN2020108238W WO2022032439A1 WO 2022032439 A1 WO2022032439 A1 WO 2022032439A1 CN 2020108238 W CN2020108238 W CN 2020108238W WO 2022032439 A1 WO2022032439 A1 WO 2022032439A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery module
low
module
charging circuit
voltage
Prior art date
Application number
PCT/CN2020/108238
Other languages
English (en)
French (fr)
Inventor
刘鹏飞
陈冰冰
吴壬华
Original Assignee
深圳欣锐科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳欣锐科技股份有限公司 filed Critical 深圳欣锐科技股份有限公司
Priority to PCT/CN2020/108238 priority Critical patent/WO2022032439A1/zh
Priority to CN202080006438.4A priority patent/CN113165523B/zh
Publication of WO2022032439A1 publication Critical patent/WO2022032439A1/zh

Links

Images

Classifications

    • 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
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • 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
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the present application relates to the technical field of electric vehicles, in particular to a charging circuit, a device and an electric vehicle.
  • low-voltage batteries and multiple integrated circuits such as microprocessors, digital signal processors, dynamic random access memory and static random access memory, etc.
  • the low-voltage battery supplies power to these multiple integrated circuits to maintain the normal operation of the vehicle system.
  • these multiple integrated circuits cannot work normally, resulting in the vehicle system cannot operate normally, and the electric vehicle cannot be used normally.
  • the low-voltage battery feeding problem is often solved by replacing the low-voltage battery.
  • this method is complicated in operation and low in intelligence.
  • the present application provides a charging circuit, a device and an electric vehicle, in order to improve the convenience and intelligence of the charging process of the electric vehicle.
  • the present application provides a charging circuit, which is applied to a vehicle system.
  • the charging circuit includes a power battery module, a first switch module, a DC-to-DC converter, and a low-voltage battery module, wherein,
  • One end of the power battery module is connected to one end of the first switch module, the other end of the first switch module is connected to one end of the DC-DC converter, and the other end of the DC-DC converter is connected to the DC-DC converter.
  • one end of the low-voltage battery module, and the other end of the low-voltage battery module is connected to the other end of the power battery module.
  • the charging circuit further includes a second switch module, the second switch module is connected in parallel with the first switch module, and one end of the second switch module is connected to one end of the power battery module, so The other end of the second switch module is connected to one end of the DC-DC converter.
  • the charging circuit further includes a feed controller, wherein,
  • the feed controller is respectively connected to the power battery module and the first switch module;
  • the feed controller receives a control instruction sent by the power battery module, and determines the state of the first switch module according to the control instruction.
  • the charging circuit further includes a second switch module, wherein the second switch module is connected to the feed controller.
  • the charging circuit further includes a second switch module, and the power battery module includes a feed controller, wherein the second switch module is connected to the power battery module through the feed controller.
  • the first switch module is a precharge switch.
  • the second switch module is a precharge switch.
  • a voltage monitoring device or circuit is provided in the DC-DC converter.
  • the present application provides a charging device including the charging circuit according to any one of the first aspects.
  • the present application provides an electric vehicle including the charging circuit according to any one of the first aspects.
  • the charging circuit includes a power battery module, a first switch module, a DC-DC converter, and a low-voltage battery module, wherein one end of the power battery module is connected to one end of the first switch module, and the first switch The other end of the module is connected to one end of the DC-DC converter, the other end of the DC-DC converter is connected to one end of the low-voltage battery module, and the other end of the low-voltage battery module is connected to the other end of the power battery module. It can be seen that the charging circuit of the present application can charge the low-voltage battery module through the high-voltage battery module, realize power supply to the low-voltage battery module, and improve the intelligence of power supply for the low-voltage battery in the vehicle system.
  • FIG. 1 is a schematic structural diagram of a charging circuit provided by the application.
  • FIG. 2 is a schematic structural diagram of another charging circuit provided by the application.
  • FIG. 3 is a schematic structural diagram of another charging circuit provided by the present application.
  • FIG. 4 is a schematic structural diagram of still another charging circuit provided by the present application.
  • a charging circuit, a charging device or an electric vehicle that includes a series of devices or modules is not limited to the listed devices or modules, but optionally also includes unlisted devices or modules, or optionally also includes These charging circuits, charging devices or other devices or modules inherent in electric vehicles.
  • FIG. 1 is a schematic structural diagram of a charging circuit provided by the present application.
  • the charging circuit 10 includes a power battery module 101 , a first switch module 102 , a DC-to-DC converter 103 and Low voltage battery module 104, wherein,
  • One end of the power battery module 101 is connected to one end of the first switch module 102 , and the other end of the first switch module 102 is connected to one end of the DC-DC converter 103 , and the DC-DC converter 103
  • the other end of the low-voltage battery module 104 is connected to one end of the low-voltage battery module 104 , and the other end of the low-voltage battery module 104 is connected to the other end of the power battery module 101 .
  • the power battery module 101 is a module that integrates a power battery and a power battery management module, which can realize power supply and power supply management.
  • the power battery management module may be a power battery management system (Battery Management System, BMS).
  • BMS Battery Management System
  • the power battery management module may also be a vehicle controller.
  • DC-to-DC converter also known as DC/DC converter
  • DC-to-DC converter is a circuit or electromechanical device for electrical energy conversion, which can convert direct current (DC) power into direct current (or approximately DC power supply.
  • the entire vehicle system of an electric vehicle can convert the high-voltage current provided by the power battery module into a specific low-voltage current and store it in the low-voltage battery module through a DC-DC converter, so as to supply power to each integrated circuit in the vehicle system.
  • the DC-to-DC converter 103 involved in the present application can realize that after receiving the high-voltage current from the power battery module 101, if it is determined that the low-voltage battery module 104 needs to be charged, the current conversion function is activated to convert the current to the low-voltage battery module 104.
  • the high-voltage current is converted into a low-voltage current corresponding to the low-voltage battery module 104 , and the low-voltage current is provided to the low-voltage battery module 104 .
  • the determination by the DC-DC converter 103 to charge the low-voltage battery module 104 includes any one of the following two situations: 1. receiving a charging instruction from the power battery module 101; 2. sampling its own output voltage (corresponding to the voltage of the low-voltage battery module 104 ), and it is determined that the output voltage is less than a preset voltage.
  • the low-voltage battery module 104 can be directly connected to a plurality of integrated circuits (such as microprocessors, digital signal processors, dynamic random access memories and static random access memories), and provide these integrated circuits with the specific requirements of the integrated circuits.
  • DC voltage wherein the DC voltage provided by the low-voltage battery module 104 may be 12V, and the magnitude of the DC voltage provided by the low-voltage battery module 104 is not specifically limited.
  • the charging circuit 10 can charge the low-voltage battery module 104 through the power battery module 101 in the following two ways.
  • the power battery module 101 monitors the voltage of the low-voltage battery module 104, and when detecting that the voltage is less than or equal to a first preset voltage, closes the first switch module 102, and sends the
  • the DC-to-DC converter 103 inputs a high-voltage current, and at the same time, generates a charging command, and sends the charging command to the DC-to-DC converter 103; after the DC-to-DC converter 103 receives the charging command,
  • the high-voltage current output by the power battery module 101 is converted into a low-voltage current corresponding to the low-voltage battery module 104 according to the charging instruction, and the low-voltage current is provided to the low-voltage battery module 104 .
  • the charging circuit 10 can The power battery module 101 controls the first switch module 102 to close, so as to input a high-voltage current to the DC-to-DC converter 103, and controls the DC-to-DC converter 103 through the power battery module 101 to activate the current conversion function , so as to realize the module charging to the low-voltage battery module 104 .
  • the power battery module 101 monitors the voltage of the low-voltage battery module 104, and when detecting that the voltage is less than or equal to a second preset voltage, closes the first switch module 102, thereby switching to
  • the DC-DC converter 103 inputs a high-voltage current; when the DC-DC converter 103 receives the high-voltage current of the power battery module 101, the following operations are performed: sampling its own output voltage; judging whether the output voltage is is less than the third preset voltage, and the third preset voltage is less than the second preset voltage; if so, convert the high-voltage current output by the power battery module 101 into the low-voltage current corresponding to the low-voltage battery module 104, The low-voltage power is supplied to the low-voltage battery module 104 .
  • the third preset voltage in the second mode can be equal to the first preset voltage corresponding to the first mode, that is, the voltage is less than or equal to the third preset voltage, that is, the external appearance is the
  • the charging circuit 10 can control the first switch module 102 to close through the power battery module 101 , thereby inputting a high voltage to the DC-DC converter 103
  • the DC-DC converter 103 monitors the input voltage of the low-voltage battery module 104 to control its own startup current conversion function, so as to realize the module charging of the low-voltage battery module 104 .
  • a voltage monitoring device or circuit may be provided in the DC-to-DC converter 103 to realize the function of being able to sample its own output voltage.
  • the charging circuit 10 provided by the present application can realize charging the low-voltage battery module 104 through the power battery module 101 (high-voltage battery module) in time before the low-voltage battery module 104 is fed with electricity, so as to improve the intelligence of power supply for the low-voltage battery in the vehicle system .
  • the first switch module 102 may be a pre-charge switch. If the first switch module 102 is a pre-charge switch, the inrush current when the first switch module 102 is started can be reduced, thereby protecting the charging circuit 10.
  • the charging circuit 20 includes: a power battery module 201 , a first switch module 202 , and a DC-to-DC converter 203 , a low-voltage battery module 204 and a second switch module 205, wherein one end of the power battery module 201 is connected to one end of the first switch module 202, and the other end of the first switch module 202 is connected to the DC to DC One end of the converter 203, the other end of the DC-DC converter 203 is connected to one end of the low-voltage battery module 204, the other end of the low-voltage battery module 204 is connected to the other end of the power battery module 201, and the first Two switch modules 205 are connected in parallel with the first switch module 202, one end of the second switch module 205 is connected to one end of the power battery module 201, and the other end of the second switch module 205 is connected to the DC-DC converter one
  • the charging circuit 20 shown in FIG. 2 is a second switch module (corresponding to the second switch module 205 in FIG. 2 ) added in parallel with the first switch module 102 on the charging circuit 10 shown in FIG. 1 .
  • the second switch module is a manual switch
  • the second switch module may be a physical switch
  • the second switch module may also be a virtual control.
  • the charging circuit 20 shown in FIG. 2 can realize all the functions of the charging circuit 10 shown in FIG. 1 .
  • the DC-to-DC converter 203 can be used for feeding power from the low-voltage battery module 204 .
  • the high-voltage current obtained from the power battery module 201 is converted into the low-voltage current required by itself, so as to supply power to itself.
  • the battery management function of the power battery module 201 cannot be automatically turned on.
  • the user can manually close the second switch module 205 to ensure the power battery module 201 Input a high-voltage current to the DC-to-DC converter 203, and the DC-to-DC converter 203 converts the high-voltage current into a low-voltage current required by itself to supply power to itself, so as to sample its own output voltage, so the low-voltage
  • the battery module 204 has been fed, and it can be seen that the output voltage at this time is lower than the aforementioned third preset voltage, so that the DC-DC converter 203 starts its own current conversion function, so as to realize the module charging of the low-voltage battery module 104 .
  • the user can manually close the second switch module 205 to realize the power supply to the low-voltage battery through the power battery module 201 Module 204 supplies power.
  • the charging circuit 20 provided by the present application can not only realize the functions of the charging circuit 10 , but also can timely pass the power battery module 201 and the direct current according to the closing operation of the second switch module 205 when the low-voltage battery module 204 is feeding power.
  • the DC-to-DC converter 203 charges the low-voltage battery module 204, which expands the charging mechanism of the electric vehicle, solves the problem of feeding the low-voltage battery module 204, and ensures the normal operation of the electric vehicle.
  • the second switch module 205 can be disconnected to avoid unnecessary power generation in the power battery module 201 when the low-voltage battery module 204 is fed but the electric vehicle is not used temporarily. consume.
  • the second switch module 205 may be a pre-charge switch. If the second switch module 205 is a pre-charge switch, the inrush current activated by the second switch module 205 can be reduced, thereby protecting the charging circuit 20 .
  • FIG. 3 is a schematic structural diagram of another charging circuit provided by the present application.
  • the charging circuit 30 includes: a power battery module 301 , a first switch module 302 , and a DC-to-DC converter 303 , a low-voltage battery module 304, and a feed controller 305, wherein one end of the power battery module 301 is connected to one end of the first switch module 302, and the other end of the first switch module 302 is connected to the DC to DC One end of the converter 303, the other end of the DC-DC converter 303 is connected to one end of the low-voltage battery module 304, the other end of the low-voltage battery module 304 is connected to the other end of the power battery module 301, and the feeder is connected to the other end of the power battery module 301.
  • the electric controller 305 is respectively connected to the power battery module 301 and the first switch module 302 .
  • the charging circuit 30 shown in FIG. 3 adds a feeding controller (corresponding to the feeding controller 305 in FIG. 3 ) on the charging circuit 10 shown in FIG. 1 .
  • the difference from the charging circuit 10 shown in FIG. 1 is that when the low-voltage battery module 304 is not fed, the charging circuit 30 shown in FIG. 3 closes the first switch module 302 in the following manner:
  • the power battery module 301 generates a control command, and sends the control command to the feed controller 305; the feed controller 305 closes the first switch module 302 according to the control command.
  • the charging circuit 30 can control the feed controller 305 to close the first switch module 302 through the power battery module 301, so as to realize the timely passing of the power battery module 301 The low voltage battery module 304 is charged.
  • the charging circuit 40 includes: a power battery module 401 , a first switch module 402 , and a DC-to-DC converter 403 , a low-voltage battery module 404, a feed controller 405 and a second switch module 406, wherein one end of the power battery module 401 is connected to one end of the first switch module 402, and the other end of the first switch module 402 is connected One end of the DC-DC converter 403 , the other end of the DC-DC converter 403 is connected to one end of the low-voltage battery module 404 , and the other end of the low-voltage battery module 404 is connected to the other end of the power battery module 401 .
  • the feed controller 405 is respectively connected to the power battery module 401 , the first switch module 402 , and the second switch module 406 .
  • the charging circuit 40 shown in FIG. 4 is a second switch module (corresponding to the second switch module 406 in FIG. 4 ) added to the charging circuit 30 shown in FIG. 3 , which is connected to the feed controller 305 . ).
  • the charging circuit 40 shown in FIG. 4 can realize all the functions of the charging circuit 30 shown in FIG. 3 , in addition, the DC-DC converter 403 and the feed controller 405 can be used in the low-voltage battery When the module 404 is feeding power, the high-voltage current obtained from the power battery module 401 is converted into a low-voltage current, so as to supply power to itself.
  • the feed controller 405 can obtain high-voltage current from the power battery module 401 and convert the high-voltage current into itself
  • the required low-voltage current supplies power to itself to close the first switch module 402, so as to realize the input of high-voltage current to the DC-DC converter 403 through the power battery module 401; the DC-DC converter 403 is receiving
  • the high-voltage current is converted into the low-voltage current required by itself to supply power to itself, so as to turn on its own current conversion function, so as to convert the high-voltage current into the low-voltage current corresponding to the low-voltage battery module 404, and send it to the low-voltage battery module 404.
  • the low-voltage battery module 404 provides the low-voltage current, so far, the low-voltage battery module 404 is charged through the power battery module 401 .
  • the user can manually close the second switch module 406 to charge the low-voltage battery module 404 through the power battery module 401 .
  • the feed controller 405 may be integrated in the power battery module 401, and the feed controller 405 is connected to the second switch module 406, which is equivalent to when the low-voltage battery module 404
  • the power battery module 401 integrated with the feeding controller 405 can control the first switch module 402 to close by receiving a signal from an external switch (the second switch module 406 ), so as to charge the low-voltage battery module 404 .
  • the charging circuit 40 can control the feed controller 405 through an external switch (ie, the second switch module 406 ) when the low-voltage battery module 404 is feeding power, so as to realize the power supply to the low-voltage battery module through the power battery module 401 404 charging.
  • an external switch ie, the second switch module 406
  • the present application provides a charging device (not shown), the charging device includes the charging circuit shown in any of the above-mentioned FIGS. 1 to 4 .
  • the present application provides an electric vehicle (not shown), the electric vehicle includes a charging circuit as shown in any of the above-mentioned Figures 1 to 4 .
  • the disclosed charging circuit may be implemented in other ways.
  • the charging circuit embodiments described above are only illustrative.
  • the division of the above modules is only a logical function division. In actual implementation, there may be other division methods. For example, multiple modules or components may be combined or Integrated into another module, or some features can be ignored.
  • modules described above as separate components may or may not be physically separated, and components shown as modules may or may not be physical modules, that is, may be located in one place, or may be distributed to multiple modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional module in each embodiment of the present application may be integrated into one processing module, or each module may exist physically alone, or two or more modules may be integrated into one module.
  • the above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

充电电路、装置以及电动汽车，充电电路包括动力电池模块（101）、第一开关模块（102）、直流转直流转换器（103）及低压电池模块（104），动力电池模块（101）的一端与第一开关模块（102）一端连接，第一开关模块（102）的另一端连接直流转直流转换器（103）的一端，直流转直流转换器（103）的另一端连接低压电池模块（104）的一端，低压电池模块（104）的另一端连接动力电池模块（101）的另一端。有利于提升整车系统中为低压电池供电的智能性和便捷性。

Description

充电电路、装置以及电动汽车 技术领域
本申请涉及电动汽车技术领域，具体涉及一种充电电路、装置以及电动汽车。
背景技术
随着汽车工业的迅猛发展，城市交通工具汽车尤其是家用轿车的数量急剧增加，汽车燃油产生的尾气已成为大气污染的主要污染源之一，电动汽车相对于传统汽车而言，可有效减少尾气排放，从而减少环境污染，因而具有很好的发展前景。
目前，电动汽车的整车系统中存在低压电池和多个集成电路(如微处理器、数字信号处理器、动态随机存取存储器以及静态随机存取存储器等)，当低压电池未馈电时，由低压电池给这多个集成电路供电以维持整车系统的正常运行，当低压电池馈电后，这多个集成电路不能正常工作，导致整车系统无法正常运行，电动汽车无法正常使用，现有技术中，往往通过更换低压电池解决低压电池馈电问题，然而，该方法操作复杂，智能性低。
发明内容
本申请提供了一种充电电路、装置以及电动汽车，以期提高电动汽车充电过程的便捷性和智能性。
第一方面，本申请提供一种充电电路，应用于整车系统，所述充电电路包括动力电池模块、第一开关模块、直流转直流转换器以及低压电池模块，其中，
所述动力电池模块的一端与所述第一开关模块的一端连接，所述第一开关模块的另一端连接所述直流转直流转换器的一端，所述直流转直流转换器的另一端连接所述低压电池模块的一端，所述低压电池模块的另一端连接所述动力电池模块的另一端。
在一个实施例中，所述充电电路还包括第二开关模块，所述第二开关模块与所述第一开关模块并联，所述第二开关模块的一端连接所述动力电池模块的一端，所述第二开关模块的另一端连接所述直流转直流转换器的一端。
在一个实施例中，所述充电电路还包括馈电控制器，其中，
所述馈电控制器分别连接所述动力电池模块和所述第一开关模块；
所述馈电控制器接收所述动力电池模块发送的控制指令，并根据所述控制指令确定所述第一开关模块的状态。
在一个实施例中，所述充电电路还包括第二开关模块，其中，所述第二开关模块连接所述馈电控制器。
在一个实施例中，所述充电电路还包括第二开关模块，所述动力电池模块包括馈电控制器，其中，所述第二开关模块通过所述馈电控制器连接所述动力电池模块。
在一个实施例中，所述第一开关模块为预充电开关。
在一个实施例中，所述第二开关模块为预充电开关。
在一个实施例中，所述直流转直流转换器中设置有电压监测器件或者电路。
第二方面，本申请提供一种充电装置，所述充电装置包括如第一方面任一项所述的充电电路。
第三方面，本申请提供一种电动汽车，所述电动汽车包括如第一方面任一项所述的充电电路。
可以看出，在本申请中，充电电路包括动力电池模块、第一开关模块、直流转直流转换器以及低压电池模块，其中，动力电池模块的一端与第一开关模块的一端连接，第一开关模块的另一端连接直流转直流转换器的一端，直流转直流转换器的另一端连接低压电池模块的一端，低压电池模块的另一端连接动力电池模块的另一端。可见，本申请的充电电路能够通过高压电池模块向低压电池模块充电，实现向低压电池模块供电，提升整车系统中为低压电池供电的智能性。
附图说明
为了更清楚地说明本申请或背景技术中的技术方案，下面将对本申请或背景技术中所涉及到的附图作简单地介绍。
下面将对本申请所涉及到的附图作简单地介绍。
图1为本申请提供的一种充电电路的结构示意图；
图2为本申请提供的另一种充电电路的结构示意图；
图3为本申请提供的又一种充电电路的结构示意图；
图4为本申请提供的再一种充电电路的结构示意图。
具体实施方式
为了使本技术领域的人员更好地理解本申请方案，下面将结合本申请中的附图，对本申请中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分的实施例，而不是全部的实施例。基于本申请中的实施例，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，都应当属于本申请保护的范围。
以下分别进行详细说明。
本申请的说明书和权利要求书及所述附图中的术语“第一”、“第二”是用于区别不同对象，而不是用于描述特定顺序。此外，术语“包括”和“具有”以及它们的任何变形，意图在于覆盖不排他的包含。例如包含了一系列器件或者模块的充电电路、充电装置或电动汽车没有限定于已列出的器件或者模块，而是可选地还包括没有列出的器件或者模块，或可选地还包括对于这些充电电路、充电装置或电动汽车固有的其它器件或者模块。
在本文中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本文所描述的实施例可以与其它实施例相结合。
下面结合附图对本申请进行介绍。
请参阅图1，图1是本申请提供的一种充电电路的结构示意图，如图1所示，所述充电电路10包括动力电池模块101、第一开关模块102、直流转直流转换器103以及低压电池模块104，其中，
所述动力电池模块101的一端与所述第一开关模块102的一端连接、所述第一开关模块102的另一端连接所述直流转直流转换器103的一端，所述直流转直流转换器103的另一端连接所述低压电池模块104的一端，所述低压电池模块104的另一端连接所述动力电池模块101的另一端。
其中，所述动力电池模块101为集成了动力电池与动力电池管理模块的模块，能够实现供电及供电管理，所述动力电池管理模块可以是动力电池管理系统(Battery Management System,BMS)，所述动力电池管理模块也可以是整车控制器。
其中，直流转直流转换器(DC-to-DC converter)，也称为DC/DC转换器，是电能转换的电路或机电设备，可以将直流(DC)电源转换为不同电压的直流(或近似直流)电源。电动汽车的整车系统可通过直流转直流转换器将动力电池模块提供的高压电流转化为特定的低压电流存储在低压电池模块，以实现向整车系统中的各个集成电路供电。
此外，本申请所涉及的直流转直流转换器103能够实现在接收到来自所述动力电池模块101的高压电流后，若确定出需要向所述低压电池模块104充电，则启动电流转化功能，将所述高压电流转化为所述低压电池模块104对应的低压电流，并向所述低压电池模块104提供所述低压电流。其中，所述直流转直流转换器103确定出需要向所述低压电池模块104充电包括以下两种情况中的任意一种：1、接收到来自所述动力电池模块101的充电指令；2、采样自身的输出电压(对应所述低压电池模块104的电压)，且确定出所述输出电压小于预设电压。
其中，所述低压电池模块104可以直接连接多个集成电路(如微处理器、数字信号处理器、动态随机存取存储器和静态随机存取存储器)，并向这些集成电路提供集成电路需要的特定直流电压，其中，所述低压电池模块104提供的直流电压可以是12V，对所述低压电池模块104提供的直流电压的大小不作 具体限定。
具体而言，结合图1，在所述低压电池模块104未馈电时，所述充电电路10能够通过以下两种方式实现通过所述动力电池模块101向所述低压电池模块104模块充电。
第一种实现方式，所述动力电池模块101监测所述低压电池模块104的电压，并在检测到所述电压小于或者等于第一预设电压时，闭合所述第一开关模块102，向所述直流转直流转换器103输入高压电流，同时，生成充电指令，并向所述直流转直流转换器103发送所述充电指令；所述直流转直流转换器103在接收到所述充电指令后，根据所述充电指令将所述动力电池模块101输出的高压电流转换为所述低压电池模块104对应的低压电流，并向所述低压电池模块104提供所述低压电流。需要说明的是，此种方式下，所述电压小于或者等于第一预设电压即对外表现为所述低压电池模块104的电量低于或者等于预设电量时，所述充电电路10能够通过所述动力电池模块101控制所述第一开关模块102闭合，从而向所述直流转直流转换器103输入高压电流，并且通过所述动力电池模块101控制所述直流转直流转换器103启动电流转化功能,以实现向所述低压电池模块104模块充电。
第二种实现方式，所述动力电池模块101监测所述低压电池模块104的电压，并在检测到所述电压小于或者等于第二预设电压时，闭合所述第一开关模块102，从而向所述直流转直流转换器103输入高压电流；所述直流转直流转换器103在接收到所述动力电池模块101的高压电流时，执行以下操作：采样自身的输出电压；判断所述输出电压是否小于第三预设电压，所述第三预设电压小于所述第二预设电压；若是，则将所述动力电池模块101输出的高压电流转换为所述低压电池模块104对应的低压电流，并向所述低压电池模块104提供所述低压电。需要说明的是，第二种方式中的第三预设电压可等同于第一种方式对应的第一预设电压，即是所述电压小于或者等于第三预设电压即对外表现为所述低压电池模块104的电量低于或者等于预设电量时，所述充电电路10能够通过所述动力电池模块101控制所述第一开关模块102闭合，从而向所述直流转直流转换器103输入高压电流，并且通过所述直流转直流转换器 103监测所述低压电池模块104的输入电压来控制自身启动电流转化功能，以实现向所述低压电池模块104模块充电。
该实现方式下，可以通过在所述直流转直流转换器103中设置电压监测器件或者电路，以实现能够采样自身输出电压的功能。
可见，本申请提供的充电电路10能够实现在低压电池模块104馈电之前，及时通过动力电池模块101(高压电池模块)向低压电池模块104充电，提升整车系统中为低压电池供电的智能性。
进一步的，所述第一开关模块102可以是预充电开关，若所述第一开关模块102为预充电开关，能够减少所述第一开关模块102启动时的冲击电流，从而所述保护充电电路10。
请参阅图2，图2是本申请提供的另一种充电电路的结构示意图，如图2所示，该充电电路20包括：动力电池模块201、第一开关模块202、直流转直流转换器203、低压电池模块204以及第二开关模块205，其中，所述动力电池模块201的一端与所述第一开关模块202的一端连接、所述第一开关模块202的另一端连接所述直流转直流转换器203的一端，所述直流转直流转换器203的另一端连接所述低压电池模块204的一端，所述低压电池模块204的另一端连接所述动力电池模块201的另一端，所述第二开关模块205与所述第一开关模块202并联，所述第二开关模块205的一端连接所述动力电池模块201的一端、所述第二开关模块205的另一端连接所述直流转直流转换器203的一端。
其中，图2所示出的充电电路20是在图1所示出的充电电路10上增加了一个与第一开关模块102并联的第二开关模块(对应图2中的第二开关模块205)，该第二开关模块为手动开关，该第二开关模块可以是实体开关，该第二开关模块也可以是虚拟控件。
图2所示出的充电电路20能够实现所述图1所示出的充电电路10的全部功能，此外，所述直流转直流转换器203在所述低压电池模块204馈电的情况下，能够从所述动力电池模块201中获取高压电流转化为自身需要的低压电流，以实现给自身供电。
当所述低压电池模块204不馈电的情况下，图2所示出的充电电路20与图1所示出的充电电路10的工作原理以及工作过程相同，请参考上述针对图1所示出的充电电路10的介绍，此处，不再赘述。
当所述低压电池模块204馈电的情况下，所述动力电池模块201的电池管理功能无法自动开启，此时，用户可手动闭合所述第二开关模块205，从而保证所述动力电池模块201向所述直流转直流转换器203输入高压电流，所述直流转直流转换器203将所述高压电流转化为自身需要的低压电流给自身供电，以实现采样自身的输出电压，因此时所述低压电池模块204已经馈电，可知，此时的输出电压小于前述第三预设电压，因而使得所述直流转直流转换器203启动自身的电流转化功能，以实现向所述低压电池模块104模块充电。
在实际应用中，在需要使用电动汽车但所述低压电池模块204已馈电的情况下，用户可手动闭合所述第二开关模块205，以实现通过所述动力电池模块201向所述低压电池模块204供电。可见，本申请所提供的充电电路20除了能够实现充电电路10中的功能，还能够在低压电池模块204馈电时，根据针对第二开关模块205的闭合操作，及时通过动力电池模块201和直流转直流转换器203为低压电池模块204充电，拓展了电动汽车的充电机制，解决了低压电池模块204馈电的问题，保证电动汽车正常工作。
在实际应用中，在电动汽车暂时停用的情况下，用户可以断开所述第二开关模块205，即使所述低压电池模块204已馈电，充电电路20也不会通过所述动力电池模块201向所述低压电池模块204充电。可见，本申请所提供的充电电路20可以通过断开所述第二开关模块205以避免在低压电池模块204馈电但暂时未使用电动汽车的情况下，动力电池模块201中电量发生不必要的消耗。
进一步的，所述第二开关模块205可以是预充电开关，若所述第二开关模块205为预充电开关，能够减少所述第二开关模块205启动的冲击电流，从而所述保护充电电路20。
请参阅图3，图3是本申请提供的又一种充电电路的结构示意图，如图3所示，该充电电路30包括：动力电池模块301、第一开关模块302、直流转直 流转换器303、低压电池模块304以及馈电控制器305，其中，所述动力电池模块301的一端与所述第一开关模块302的一端连接，所述第一开关模块302的另一端连接所述直流转直流转换器303的一端，所述直流转直流转换器303的另一端连接所述低压电池模块304的一端，所述低压电池模块304的另一端连接所述动力电池模块301的另一端，所述馈电控制器305分别连接所述动力电池模块301和所述第一开关模块302。
其中，图3所示出的充电电路30是在图1所示出的充电电路10上增加了一个馈电控制器(对应图3中的馈电控制器305)。
其中，与图1所示出的充电电路10不同的是，当所述低压电池模块304未馈电时，图3所示出的充电电路30闭合所述第一开关模块302的方式为：所述动力电池模块301生成控制指令，并向所述馈电控制器305发送所述控制指令；所述馈电控制器305根据控制指令闭合所述第一开关模块302。
可见，在本实施例中，在低压电池模块304即将馈电的情况下，充电电路30能够通过动力电池模块301控制馈电控制器305闭合第一开关模块302，以实现及时通过动力电池模块301向低压电池模块304充电。
请参阅图4，图4是本申请提供的再一种充电电路的结构示意图，如图4所示，该充电电路40包括：动力电池模块401、第一开关模块402、直流转直流转换器403、低压电池模块404、馈电控制器405以及第二开关模块406，其中，所述动力电池模块401的一端与所述第一开关模块402一端连接、所述第一开关模块402的另一端连接所述直流转直流转换器403的一端，所述直流转直流转换器403的另一端连接所述低压电池模块404的一端，所述低压电池模块404的另一端连接所述动力电池模块401的另一端，所述馈电控制器405分别连接所述动力电池模块401、所述第一开关模块402、所述第二开关模块406。
其中，图4所示出的充电电路40是在图3所示出的充电电路30上增加了一个连接所述馈电控制器305的第二开关模块(对应图4中的第二开关模块406)。
图4所示出的充电电路40能够实现所述图3所示出的充电电路30的全部 功能，此外，所述直流转直流转换器403和所述馈电控制器405能够在所述低压电池模块404馈电的情况下，从所述动力电池模块401中获取高压电流转化为低压电流，以实现给自身供电。
当所述低压电池模块404不馈电的情况下，图4所示出的充电电路40与图3所示出的充电电路30的工作原理以及工作过程相同，请参考上述针对图3所示出的充电电路30的介绍，此处，不再赘述。
当所述低压电池模块404馈电且所述第二开关模块406闭合的情况下，所述馈电控制器405能够从所述动力电池模块401中获取高压电流，并将该高压电流转化为自身需要的低压电流给自身供电，以闭合所述第一开关模块402，从而实现通过所述动力电池模块401向所述直流转直流转换器403输入高压电流；所述直流转直流转换器403在接收到高压电流之后，将所述高压电流转化为自身需要的低压电流给自身供电，以开启自身的电流转化功能，从而将所述高压电流转化为所述低压电池模块404对应的低压电流，并向所述低压电池模块404提供所述低压电流，至此，实现了通过所述动力电池模块401向所述低压电池模块404充电。
实际应用中，在低压电池模块404馈电时，用户可手动闭合所述第二开关模块406即可实现通过所述动力电池模块401向所述低压电池模块404充电。
可选的，所述馈电控制器405可以集成在所述动力电池模块401中，所述馈电控制器405再连接所述第二开关模块406，则相当于，当所述低压电池模块404馈电时，集成了馈电控制器405的动力电池模块401接收一个外部开关(第二开关模块406)信号就能控制所述第一开关模块402闭合，实现向所述低压电池模块404充电。
可见，在本实施例中，充电电路40能够在低压电池模块404馈电时，通过外接开关(即第二开关模块406)控制馈电控制器405，从而实现通过动力电池模块401向低压电池模块404充电。
此外，本申请提供的一种充电装置(图未示)，所述充电装置包括如上述图1至图4任一图所示出的充电电路。
此外，本申请提供的一种电动汽车(图未示)，所述电动汽车包括如上述 图1至图4任一图所示出的充电电路。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。
在本申请所提供的几个实施例中，应该理解到，所揭露的充电电路，可通过其它的方式实现。例如，以上所描述的充电电路实施例仅仅是示意性的，例如上述模块的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个模块或组件可以结合或者可以集成到另一个模块，或一些特征可以忽略。
上述作为分离部件说明的模块可以是或者也可以不是物理上分开的，作为模块显示的部件可以是或者也可以不是物理模块，即可以位于一个地方，或者也可以分布到多个模块上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能模块可以集成在一个处理模块中，也可以是各个模块单独物理存在，也可以两个或两个以上模块集成在一个模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。
以上对本申请进行了详细介绍，本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请及其核心思想；同时，对于本领域的一般技术人员，依据本申请的思想，在具体实现方式及应用范围上均会有改变之处，综上上述，本说明书内容不应理解为对本申请的限制。

Claims (10)

  1. 一种充电电路，应用于整车系统，其特征在于，所述充电电路包括动力电池模块、第一开关模块、直流转直流转换器以及低压电池模块，其中，
    所述动力电池模块的一端与所述第一开关模块的一端连接，所述第一开关模块的另一端连接所述直流转直流转换器的一端，所述直流转直流转换器的另一端连接所述低压电池模块的一端，所述低压电池模块的另一端连接所述动力电池模块的另一端。
  2. 根据权利要求1所述的充电电路，其特征在于，所述充电电路还包括第二开关模块，所述第二开关模块与所述第一开关模块并联，所述第二开关模块的一端连接所述动力电池模块的一端，所述第二开关模块的另一端连接所述直流转直流转换器的一端。
  3. 根据权利要求1所述的充电电路，其特征在于，所述充电电路还包括馈电控制器，其中，
    所述馈电控制器分别连接所述动力电池模块和所述第一开关模块；
    所述馈电控制器接收所述动力电池模块发送的控制指令，并根据所述控制指令确定所述第一开关模块的状态。
  4. 根据权利要求3所述的充电电路，其特征在于，所述充电电路还包括第二开关模块，其中，所述第二开关模块连接所述馈电控制器。
  5. 根据权利要求1所述的充电电路，其特征在于，所述充电电路还包括第二开关模块，所述动力电池模块包括馈电控制器，其中，所述第二开关模块通过所述馈电控制器连接所述动力电池模块。
  6. 根据权利要求1-5任一项所述的充电电路，其特征在于，所述第一开关模块为预充电开关。
  7. 根据权利要求2、4和5中任一项所述的充电电路，其特征在于，所述第二开关模块为预充电开关。
  8. 根据权利要求1-5任一项所述的充电电路，其特征在于，所述直流转直流转换器中设置有电压监测器件或者电路。
  9. 一种充电装置，其特征在于，所述充电装置包括如权利要求1-8任一 项所述的充电电路。
  10. 一种电动汽车，其特征在于，所述电动汽车包括如权利要求1-8任一项所述的充电电路。
PCT/CN2020/108238 2020-08-10 2020-08-10 充电电路、装置以及电动汽车 WO2022032439A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2020/108238 WO2022032439A1 (zh) 2020-08-10 2020-08-10 充电电路、装置以及电动汽车
CN202080006438.4A CN113165523B (zh) 2020-08-10 2020-08-10 充电电路、装置以及电动汽车

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2020/108238 WO2022032439A1 (zh) 2020-08-10 2020-08-10 充电电路、装置以及电动汽车

Publications (1)

Publication Number Publication Date
WO2022032439A1 true WO2022032439A1 (zh) 2022-02-17

Family

ID=76879293

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/108238 WO2022032439A1 (zh) 2020-08-10 2020-08-10 充电电路、装置以及电动汽车

Country Status (2)

Country Link
CN (1) CN113165523B (zh)
WO (1) WO2022032439A1 (zh)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130076330A1 (en) * 2011-09-27 2013-03-28 Denso Corporation Power converter
JP2015192525A (ja) * 2014-03-28 2015-11-02 トヨタ自動車株式会社 Ｄｃ／ｄｃコンバータおよびバッテリシステム
CN206589707U (zh) * 2016-11-30 2017-10-27 法乐第(北京)网络科技有限公司 一种设备电源电路
CN107554335A (zh) * 2017-08-30 2018-01-09 奇瑞汽车股份有限公司 车载电力系统和汽车
CN207339369U (zh) * 2017-10-31 2018-05-08 北京新能源汽车股份有限公司 一种充电电路及电动汽车
CN207481819U (zh) * 2017-11-11 2018-06-12 河南森源重工有限公司 一种纯电动汽车低压蓄电池充电电路及车辆
CN207631017U (zh) * 2017-12-26 2018-07-20 石家庄迪龙科技有限公司 一种车载低压电池补电控制装置
CN210577827U (zh) * 2019-04-25 2020-05-19 北京汽车股份有限公司 低压电池管理系统、车辆电池管理系统、车辆

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109130858B (zh) * 2018-09-25 2020-07-28 北京新能源汽车股份有限公司 一种电动汽车的直流/直流变换器启动控制电路及汽车
CN212950146U (zh) * 2020-08-10 2021-04-13 深圳欣锐科技股份有限公司 充电电路、装置以及电动汽车

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130076330A1 (en) * 2011-09-27 2013-03-28 Denso Corporation Power converter
JP2015192525A (ja) * 2014-03-28 2015-11-02 トヨタ自動車株式会社 Ｄｃ／ｄｃコンバータおよびバッテリシステム
CN206589707U (zh) * 2016-11-30 2017-10-27 法乐第(北京)网络科技有限公司 一种设备电源电路
CN107554335A (zh) * 2017-08-30 2018-01-09 奇瑞汽车股份有限公司 车载电力系统和汽车
CN207339369U (zh) * 2017-10-31 2018-05-08 北京新能源汽车股份有限公司 一种充电电路及电动汽车
CN207481819U (zh) * 2017-11-11 2018-06-12 河南森源重工有限公司 一种纯电动汽车低压蓄电池充电电路及车辆
CN207631017U (zh) * 2017-12-26 2018-07-20 石家庄迪龙科技有限公司 一种车载低压电池补电控制装置
CN210577827U (zh) * 2019-04-25 2020-05-19 北京汽车股份有限公司 低压电池管理系统、车辆电池管理系统、车辆

Also Published As

Publication number Publication date
CN113165523B (zh) 2022-12-23
CN113165523A (zh) 2021-07-23

Similar Documents

Publication Publication Date Title
CN107554335B (zh) 车载电力系统和汽车
CN207972603U (zh) 一种基于bsg的轻型混合动力系统的双电网结构
CN104139708A (zh) 一种电动汽车用动力控制供电系统
WO2022206126A1 (zh) 一种混合动力控制方法、装置及车辆
CN108275026A (zh) 用于车对车充电的充电装置及方法
CN109383328B (zh) 一种通过dcdc实现高压上电进行预充电的控制方法
EP4357211A1 (en) Pre-heating control method and system for three-way catalytic converter, and vehicle and storage medium
WO2022166491A1 (zh) 高压充电系统和高压充电系统的充电方法
CN108482126A (zh) 一种新能源汽车启动系统
CN208021224U (zh) 用于车对车充电的充电装置
WO2022032439A1 (zh) 充电电路、装置以及电动汽车
CN212950146U (zh) 充电电路、装置以及电动汽车
CN213619646U (zh) 一种房车电源管理系统
CN213007972U (zh) 一种充电电路及车辆
CN211958857U (zh) 一种汽车电源系统及汽车
CN117103993A (zh) 车辆能量管理的方法、装置、存储介质及车辆
CN211106992U (zh) 一种基于燃料电池的电动汽车高压配电系统
CN1043938C (zh) 能消除电池记忆效应的电源电路及方法
CN207916757U (zh) 电动汽车用充电低压电源转换装置
CN103516039B (zh) 一种分级供电系统及方法
CN214523422U (zh) 一种电池管理系统及新能源汽车
CN111890984A (zh) 电动汽车电压转换控制系统
CN108528227B (zh) 一种电动汽车增程器控制系统、控制方法及电动汽车
CN109412262A (zh) 小配比、多功能输出的混合式ups电源车及使用方法
CN216269086U (zh) 高压电源分配器拓展装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20948938

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20948938

Country of ref document: EP

Kind code of ref document: A1