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CN106972574B - Vehicle-mounted charging and discharging circuit with protection function for lithium battery - Google Patents

Vehicle-mounted charging and discharging circuit with protection function for lithium battery Download PDF

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CN106972574B
CN106972574B CN201710277364.8A CN201710277364A CN106972574B CN 106972574 B CN106972574 B CN 106972574B CN 201710277364 A CN201710277364 A CN 201710277364A CN 106972574 B CN106972574 B CN 106972574B
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resistor
capacitor
charging
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model
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CN106972574A (en
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郑祥滨
毕嗣君
刘洪波
王晶
高成鼎
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Aerospace Hi Tech Holding Group Co Ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • 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
    • 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
    • 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
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
    • 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
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
    • 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
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00302—Overcharge protection
    • 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
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00306—Overdischarge protection
    • 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
    • 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
    • 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
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • 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
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles

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

Abstract

具有保护功能的锂电池车载充放电电路，涉及锂电池保护领域。本发明是为了解决现有的车载锂电池过充过放，导致锂电池损害及寿命短的问题。控制器的电源控制信号输出端连接供电电路的电源控制信号输入端，供电电路的电源信号输出端连接充电电路的电源信号输入端，控制器的一个电平信号输出端连接充电电路的电平信号输入端，充电电路的充电信号输出端连接锂电池的充电信号输入端，控制器的另一个电平信号输出端连接放电电路的电平信号输入端，放电电路的放电信号输出端连接锂电池的放电信号输入端。它用于实现对锂电池的充放电。

Figure 201710277364

A lithium battery on-board charge and discharge circuit with protection functions relates to the field of lithium battery protection. The invention aims to solve the problems of overcharging and over-discharging of the existing vehicle-mounted lithium batteries, resulting in damage to the lithium batteries and short service life. The power control signal output end of the controller is connected to the power control signal input end of the power supply circuit, the power signal output end of the power supply circuit is connected to the power signal input end of the charging circuit, and a level signal output end of the controller is connected to the level signal of the charging circuit The input terminal, the charging signal output terminal of the charging circuit is connected to the charging signal input terminal of the lithium battery, the other level signal output terminal of the controller is connected to the level signal input terminal of the discharging circuit, and the discharging signal output terminal of the discharging circuit is connected to the lithium battery. Discharge signal input terminal. It is used to charge and discharge lithium batteries.

Figure 201710277364

Description

具有保护功能的锂电池车载充放电电路Lithium battery car charging and discharging circuit with protection function

技术领域technical field

本发明涉及具有保护功能的锂电池车载充放电电路。属于锂电池保护领域。The invention relates to a lithium battery vehicle charging and discharging circuit with protection function. It belongs to the field of lithium battery protection.

背景技术Background technique

锂电池目前已经是卫星定位车载终端上的必备器件，其功能是在车身蓄电池欠压或者没电时能够尽可能的将车辆的一些信息传至监管平台。Lithium battery is already an essential device on the satellite positioning vehicle terminal. Its function is to transmit some information of the vehicle to the supervision platform as much as possible when the battery of the vehicle body is undervoltage or out of power.

如此广泛的应用，但电池的安全性问题一直是难以解决的“定时炸弹”。原因很简单，通常使用的锂电池工作温度在0～65度左右，而车辆是的使用环境是-40～80度；经常充电、放电会导致电池使用寿命变短，甚至失效；过冲、过放都会对电池本身造成一定程度的伤害，日积月累电池就会出问题。锂电池一旦出现问题会给车辆造成不可预估的后果，甚至给驾驶员的生命、财产造成威胁。Such a wide range of applications, but the safety of the battery has always been a "time bomb" that is difficult to solve. The reason is very simple. The working temperature of the lithium battery usually used is about 0-65 degrees, while the operating environment of the vehicle is -40-80 degrees; frequent charging and discharging will lead to shortened service life of the battery, or even failure; overshoot, overshoot Discharging will cause a certain degree of damage to the battery itself, and the battery will go wrong over time. Once there is a problem with the lithium battery, it will cause unpredictable consequences to the vehicle, and even pose a threat to the driver's life and property.

另外，电池充放电保护芯片已经大批量使用，但该类型芯片是针对通用锂电池设计的，民用锂电池电压是3.7V，而车载锂电池通常是7.4V，保护芯片无法针对车身的实际使用情况进行特定的保护。In addition, battery charge and discharge protection chips have been used in large quantities, but this type of chip is designed for general-purpose lithium batteries. The voltage of civilian lithium batteries is 3.7V, while the voltage of vehicle lithium batteries is usually 7.4V. The protection chip cannot be used for the actual use of the car body. specific protection.

基于上述原因，现有技术中存在的缺陷在于：现有的车载锂电池过充过放，导致锂电池损害及寿命短的问题。Based on the above reasons, the defects in the prior art are: the existing vehicle-mounted lithium batteries are overcharged and overdischarged, resulting in damage and short service life of the lithium batteries.

发明内容Contents of the invention

本发明是为了解决现有的车载锂电池过充过放，导致锂电池损害及寿命短的问题。现提供具有保护功能的锂电池车载充放电电路。The invention aims to solve the problems of overcharging and over-discharging of the existing vehicle-mounted lithium batteries, resulting in damage to the lithium batteries and short service life. A lithium battery on-board charging and discharging circuit with protection function is now provided.

具有保护功能的锂电池车载充放电电路，它包括充电电路、放电电路、供电电路和控制器，A lithium battery on-board charging and discharging circuit with protective functions, which includes a charging circuit, a discharging circuit, a power supply circuit and a controller,

控制器的电源控制信号输出端连接供电电路的电源控制信号输入端，供电电路的电源信号输出端连接充电电路的电源信号输入端，The power control signal output end of the controller is connected to the power control signal input end of the power supply circuit, and the power signal output end of the power supply circuit is connected to the power signal input end of the charging circuit.

控制器的一个电平信号输出端连接充电电路的电平信号输入端，充电电路的充电信号输出端连接锂电池的充电信号输入端，A level signal output terminal of the controller is connected to the level signal input terminal of the charging circuit, and the charging signal output terminal of the charging circuit is connected to the charging signal input terminal of the lithium battery.

控制器的另一个电平信号输出端连接放电电路的电平信号输入端，放电电路的放电信号输出端连接锂电池的放电信号输入端，The other level signal output end of the controller is connected to the level signal input end of the discharge circuit, and the discharge signal output end of the discharge circuit is connected to the discharge signal input end of the lithium battery.

充电电路包括电阻R1—R7、电容C1—C3、型号为DG2057TT的充电芯片KU11、PMOS管KT1、二极管RD1、发光二极管DS1、三极管KT2和热敏电阻NR1，The charging circuit includes resistors R1-R7, capacitors C1-C3, charging chip KU11 of model DG2057TT, PMOS tube KT1, diode RD1, light-emitting diode DS1, triode KT2 and thermistor NR1,

二极管RD1的正极作为充电电路的电源信号输入端，The anode of the diode RD1 is used as the power signal input terminal of the charging circuit,

二极管RD1的负极同时连接电阻R1的一端、电阻R2的一端、型号为DG2057TT的充电芯片KU11的3号引脚、型号为DG2057TT的充电芯片KU11的8号引脚、电容C1的一端和电阻R3的一端，电容C1的另一端同时连接电源地和型号为DG2057TT的充电芯片KU11的6号引脚，The cathode of diode RD1 is connected to one end of resistor R1, one end of resistor R2, pin 3 of charging chip KU11 of model DG2057TT, pin 8 of charging chip KU11 of model DG2057TT, one end of capacitor C1 and the pin of resistor R3. One end, the other end of the capacitor C1 is connected to the power ground and the No. 6 pin of the charging chip KU11 whose model is DG2057TT.

型号为DG2057TT的充电芯片KU11的1号引脚同时连接电阻R1的另一端和PMOS管KT1的漏极，The No. 1 pin of the charging chip KU11 whose model is DG2057TT is connected to the other end of the resistor R1 and the drain of the PMOS transistor KT1 at the same time.

PMOS管KT1的源极同时连接型号为DG2057TT的充电芯片KU11的2号引脚、电容C2的一端和电锂电池的正极，电容C2的另一端连接电源地，电容C2的两端输出的电压为锂电池充电，The source of the PMOS tube KT1 is connected to the No. 2 pin of the charging chip KU11 of the model DG2057TT, one end of the capacitor C2 and the positive electrode of the lithium battery, the other end of the capacitor C2 is connected to the power ground, and the output voltage of the two ends of the capacitor C2 is lithium battery charging,

PMOS管KT1的栅极同时连接电阻R2的一端和型号为DG2057TT的充电芯片KU11的7号引脚，The gate of the PMOS tube KT1 is connected to one end of the resistor R2 and the No. 7 pin of the charging chip KU11 whose model is DG2057TT.

电阻R3的另一端同时连接型号为DG2057TT的充电芯片KU11的4号引脚、电阻R5的一端、三极管KT2的发射极和热敏电阻NR1的一端，热敏电阻NR1的另一端同时连接电源地、电阻R5的另一端、电阻R4的一端、电阻R6的一端和电容C3的一端，电阻R4的另一端连接发光二极管DS1的负极，发光二极管DS1的正极连接型号为DG2057TT的充电芯片KU11的5号引脚，The other end of the resistor R3 is simultaneously connected to the No. 4 pin of the charging chip KU11 of the model DG2057TT, one end of the resistor R5, the emitter of the triode KT2 and one end of the thermistor NR1, and the other end of the thermistor NR1 is connected to the power ground, The other end of the resistor R5, one end of the resistor R4, one end of the resistor R6 and one end of the capacitor C3, the other end of the resistor R4 is connected to the negative pole of the light-emitting diode DS1, and the positive pole of the light-emitting diode DS1 is connected to the No. 5 pin of the charging chip KU11 whose model is DG2057TT foot,

三极管KT2的基极同时连接电阻R6的另一端、电容C3的另一端和电阻R7的一端，The base of the transistor KT2 is simultaneously connected to the other end of the resistor R6, the other end of the capacitor C3 and one end of the resistor R7,

电阻R7的另一端作为充电电路的电平信号输入端；The other end of the resistor R7 is used as the level signal input end of the charging circuit;

放电电路包括电阻R8—R11、电容C4—C5、三极管KT3、型号为AURF7416QTR的PMOS管KT25和肖特基二极管RD32，The discharge circuit includes resistors R8-R11, capacitors C4-C5, triode KT3, PMOS tube KT25 of model AURF7416QTR and Schottky diode RD32,

电阻R8的一端作为放电电路的电平信号输入端，电阻R8的另一端同时连接电阻R9的一端、电容C4的一端和三极管KT3的基极，电容C4的另一端同时连接电阻R9的另一端、三极管KT3的发射极和电源地，One end of the resistor R8 is used as the level signal input end of the discharge circuit, the other end of the resistor R8 is connected to one end of the resistor R9, one end of the capacitor C4 and the base of the transistor KT3, and the other end of the capacitor C4 is connected to the other end of the resistor R9, The emitter of the transistor KT3 and the power ground,

三极管KT3的的集电极连接电阻R10的一端，电阻R10的另一端同时连接电阻R11的一端和型号为AURF7416QTR的PMOS管KT25的4号引脚，The collector of the transistor KT3 is connected to one end of the resistor R10, and the other end of the resistor R10 is connected to one end of the resistor R11 and the No. 4 pin of the PMOS tube KT25 whose model is AURF7416QTR.

电阻R11的另一端作为放电电路的放电信号输出端，电阻R11的另一端同时连接锂电池的正极、型号为AURF7416QTR的PMOS管KT25的1号引脚至3号引脚，型号为AURF7416QTR的PMOS管KT25的5号引脚同时连接型号为AURF7416QTR的PMOS管KT25的6号引脚—8号引脚、电容C5的一端和肖特基二极管RD32的正极，电容C5的另一端连接电源地，肖特基二极管RD32的负极作为锂电池的电压信号输出端。The other end of the resistor R11 is used as the discharge signal output end of the discharge circuit, and the other end of the resistor R11 is simultaneously connected to the positive electrode of the lithium battery, the No. Pin 5 of KT25 is connected to pin 6-pin 8 of PMOS transistor KT25 of model AURF7416QTR, one end of capacitor C5 and the positive pole of Schottky diode RD32, and the other end of capacitor C5 is connected to the power ground, Schott The negative pole of the base diode RD32 is used as the voltage signal output terminal of the lithium battery.

本发明的有益效果为：The beneficial effects of the present invention are:

本申请中的锂电池车载充放电保护单元中控制器用于打开或者关闭供电电路对充电电路的充电，供电电路打开时，充电电路给锂电池充电；控制器也可以控制放电电路断开或者开启给锂电池放电；The controller in the lithium battery on-board charge and discharge protection unit in this application is used to turn on or off the charging of the charging circuit by the power supply circuit. When the power supply circuit is turned on, the charging circuit charges the lithium battery; Lithium battery discharge;

采用充电电路和放电电路实现对锂电池充放电的保护，防止锂电池过充或者过放；其中，充电电路中NR1是热敏电阻，当锂电池工作温度在0～65度范围内，型号为DG2057TT的充电芯片KU11为锂电池充电。当温度超过允许的范围低于0度或高于65度时，型号为DG2057TT的充电芯片KU11会将锂电池充电断开，型号为DG2057TT的充电芯片KU11关闭对锂电池的充电。当锂电池充电断开时，电阻R7的另一端会输出高电平信号，采用该锂电池充电电路能够实现锂电池的充电保护，防止过充。The charging circuit and discharging circuit are used to protect the charging and discharging of the lithium battery to prevent the lithium battery from being overcharged or overdischarged; among them, NR1 in the charging circuit is a thermistor. When the working temperature of the lithium battery is within the range of 0 to 65 degrees, the model is The charging chip KU11 of DG2057TT charges the lithium battery. When the temperature exceeds the allowable range and is lower than 0 degrees or higher than 65 degrees, the charging chip KU11 of the model DG2057TT will disconnect the charging of the lithium battery, and the charging chip KU11 of the model DG2057TT will turn off the charging of the lithium battery. When the charging of the lithium battery is disconnected, the other end of the resistor R7 will output a high-level signal, and the charging circuit of the lithium battery can realize the charging protection of the lithium battery and prevent overcharging.

放电电路中，电阻R8的一端用于接收高电平或低电平信号，根据接收高电平或低电平信号随时断开或开启锂电池的放电回路。原理是：电阻R8的一端接收到高电平信号时，三极管KT3开启，此时型号为AURF7416QTR的PMOS管KT25的栅极为低电平，型号为AURF7416QTR的PMOS管KT25开通，肖特基二极管RD32的负极有电压输出，此状态为锂电池对外输出；相反，电阻R8的一端接收到低电平信号时，三极管KT3开启，此时型号为AURF7416QTR的PMOS管KT25关闭，锂电池停止对外输出，采用该锂电池放电电路能够实现锂电池的放电保护，防止过放。In the discharge circuit, one end of the resistor R8 is used to receive a high-level or low-level signal, and the discharge circuit of the lithium battery is disconnected or opened at any time according to the received high-level or low-level signal. The principle is: when one end of the resistor R8 receives a high-level signal, the triode KT3 is turned on, and the gate of the PMOS transistor KT25 of the model AURF7416QTR is at a low level, the PMOS transistor KT25 of the model AURF7416QTR is turned on, and the Schottky diode RD32 The negative electrode has a voltage output, which is the external output of the lithium battery; on the contrary, when one end of the resistor R8 receives a low-level signal, the transistor KT3 is turned on, and at this time the PMOS transistor KT25 of the model AURF7416QTR is turned off, and the lithium battery stops the external output. The lithium battery discharge circuit can realize the discharge protection of the lithium battery and prevent over-discharge.

本申请采用充电电路和放电电路实现对锂电池充放电的保护，当车身蓄电池突然断开后，也关断锂电池，无需将锂电池电放光，这样就可以减少锂电池的充电次数，保护了锂电池的使用寿命。This application uses a charging circuit and a discharging circuit to realize the protection of charging and discharging the lithium battery. When the battery of the vehicle body is disconnected suddenly, the lithium battery is also turned off, and there is no need to discharge the lithium battery, so that the charging times of the lithium battery can be reduced, and the protection The service life of the lithium battery is shortened.

附图说明Description of drawings

图1为具体实施方式一所述的具有保护功能的锂电池车载充放电电路的原理示意图；FIG. 1 is a schematic diagram of the principle of the on-board charging and discharging circuit of a lithium battery with a protection function described in Embodiment 1;

图2为充电电路的原理图；Fig. 2 is the schematic diagram of charging circuit;

图3为放电电路的原理图；Fig. 3 is the schematic diagram of discharge circuit;

图4为蓄电池供电电路的原理图。Figure 4 is a schematic diagram of the battery power supply circuit.

具体实施方式Detailed ways

具体实施方式一：参照图1至图3具体说明本实施方式，本实施方式所述的具有保护功能的锂电池车载充放电电路，它包括充电电路1、放电电路2、供电电路3和控制器4，Specific Embodiment 1: This embodiment is described in detail with reference to FIGS. 1 to 3. The lithium battery on-board charging and discharging circuit with protection function described in this embodiment includes a charging circuit 1, a discharging circuit 2, a power supply circuit 3 and a controller. 4,

控制器4的电源控制信号输出端连接供电电路3的电源控制信号输入端，供电电路3 的电源信号输出端连接充电电路1的电源信号输入端，The power control signal output end of the controller 4 is connected to the power control signal input end of the power supply circuit 3, and the power signal output end of the power supply circuit 3 is connected to the power signal input end of the charging circuit 1,

控制器4的一个电平信号输出端连接充电电路1的电平信号输入端，充电电路1的充电信号输出端连接锂电池5的充电信号输入端，A level signal output end of the controller 4 is connected to the level signal input end of the charging circuit 1, and the charging signal output end of the charging circuit 1 is connected to the charging signal input end of the lithium battery 5,

控制器4的另一个电平信号输出端连接放电电路2的电平信号输入端，放电电路2的放电信号输出端连接锂电池5的放电信号输入端，Another level signal output end of the controller 4 is connected to the level signal input end of the discharge circuit 2, and the discharge signal output end of the discharge circuit 2 is connected to the discharge signal input end of the lithium battery 5,

充电电路1包括电阻R1—R7、电容C1—C3、型号为DG2057TT的充电芯片KU11、PMOS管KT1、二极管RD1、发光二极管DS1、三极管KT2和热敏电阻NR1，Charging circuit 1 includes resistors R1-R7, capacitors C1-C3, charging chip KU11 of model DG2057TT, PMOS tube KT1, diode RD1, light-emitting diode DS1, triode KT2 and thermistor NR1,

二极管RD1的正极作为充电电路1的电源信号输入端，The anode of the diode RD1 is used as the power signal input end of the charging circuit 1,

二极管RD1的负极同时连接电阻R1的一端、电阻R2的一端、型号为DG2057TT的充电芯片KU11的3号引脚、型号为DG2057TT的充电芯片KU11的8号引脚、电容C1的一端和电阻R3的一端，电容C1的另一端同时连接电源地和型号为DG2057TT的充电芯片KU11的6号引脚，The cathode of diode RD1 is connected to one end of resistor R1, one end of resistor R2, pin 3 of charging chip KU11 of model DG2057TT, pin 8 of charging chip KU11 of model DG2057TT, one end of capacitor C1 and the pin of resistor R3. One end, the other end of the capacitor C1 is connected to the power ground and the No. 6 pin of the charging chip KU11 whose model is DG2057TT.

型号为DG2057TT的充电芯片KU11的1号引脚同时连接电阻R1的另一端和PMOS管KT1的漏极，The No. 1 pin of the charging chip KU11 whose model is DG2057TT is connected to the other end of the resistor R1 and the drain of the PMOS transistor KT1 at the same time.

PMOS管KT1的源极同时连接型号为DG2057TT的充电芯片KU11的2号引脚、电容C2的一端和电锂电池的正极，电容C2的另一端连接电源地，电容C2的两端输出的电压为锂电池5充电，The source of the PMOS tube KT1 is connected to the No. 2 pin of the charging chip KU11 of the model DG2057TT, one end of the capacitor C2 and the positive electrode of the lithium battery, the other end of the capacitor C2 is connected to the power ground, and the output voltage of the two ends of the capacitor C2 is Lithium battery 5 charging,

PMOS管KT1的栅极同时连接电阻R2的一端和型号为DG2057TT的充电芯片KU11的7号引脚，The gate of the PMOS transistor KT1 is connected to one end of the resistor R2 and the No. 7 pin of the charging chip KU11 whose model is DG2057TT.

电阻R3的另一端同时连接型号为DG2057TT的充电芯片KU11的4号引脚、电阻R5的一端、三极管KT2的发射极和热敏电阻NR1的一端，热敏电阻NR1的另一端同时连接电源地、电阻R5的另一端、电阻R4的一端、电阻R6的一端和电容C3的一端，电阻R4的另一端连接发光二极管DS1的负极，发光二极管DS1的正极连接型号为DG2057TT的充电芯片KU11的5号引脚，The other end of the resistor R3 is simultaneously connected to the No. 4 pin of the charging chip KU11 of the model DG2057TT, one end of the resistor R5, the emitter of the triode KT2 and one end of the thermistor NR1, and the other end of the thermistor NR1 is connected to the power ground, The other end of the resistor R5, one end of the resistor R4, one end of the resistor R6 and one end of the capacitor C3, the other end of the resistor R4 is connected to the negative pole of the light-emitting diode DS1, and the positive pole of the light-emitting diode DS1 is connected to the No. 5 pin of the charging chip KU11 whose model is DG2057TT foot,

三极管KT2的基极同时连接电阻R6的另一端、电容C3的另一端和电阻R7的一端，The base of the transistor KT2 is simultaneously connected to the other end of the resistor R6, the other end of the capacitor C3 and one end of the resistor R7,

电阻R7的另一端作为充电电路1的电平信号输入端；The other end of the resistor R7 is used as the level signal input end of the charging circuit 1;

放电电路2包括电阻R8—R11、电容C4—C5、三极管KT3、型号为AURF7416QTR的PMOS管KT25和肖特基二极管RD32，Discharge circuit 2 includes resistors R8-R11, capacitors C4-C5, triode KT3, PMOS tube KT25 of model AURF7416QTR and Schottky diode RD32,

电阻R8的一端作为放电电路2的电平信号输入端，电阻R8的另一端同时连接电阻R9的一端、电容C4的一端和三极管KT3的基极，电容C4的另一端同时连接电阻R9的另一端、三极管KT3的发射极和电源地，One end of the resistor R8 is used as the level signal input end of the discharge circuit 2, the other end of the resistor R8 is connected to one end of the resistor R9, one end of the capacitor C4 and the base of the transistor KT3, and the other end of the capacitor C4 is connected to the other end of the resistor R9 at the same time , the emitter of the triode KT3 and the power ground,

三极管KT3的的集电极连接电阻R10的一端，电阻R10的另一端同时连接电阻R11的一端和型号为AURF7416QTR的PMOS管KT25的4号引脚，The collector of the transistor KT3 is connected to one end of the resistor R10, and the other end of the resistor R10 is connected to one end of the resistor R11 and the No. 4 pin of the PMOS tube KT25 whose model is AURF7416QTR.

电阻R11的另一端作为放电电路2的放电信号输出端，电阻R11的另一端同时连接锂电池的正极、型号为AURF7416QTR的PMOS管KT25的1号引脚至3号引脚，型号为AURF7416QTR的PMOS管KT25的5号引脚同时连接型号为AURF7416QTR的PMOS管KT25的6号引脚—8号引脚、电容C5的一端和肖特基二极管RD32的正极，电容C5的另一端连接电源地，肖特基二极管RD32的负极作为锂电池的电压信号输出端。The other end of the resistor R11 is used as the discharge signal output end of the discharge circuit 2, and the other end of the resistor R11 is connected to the positive pole of the lithium battery, the pin 1 to the pin 3 of the PMOS tube KT25 of the model AURF7416QTR, and the PMOS of the model AURF7416QTR Pin 5 of tube KT25 is connected to pin 6-pin 8 of PMOS tube KT25 model AURF7416QTR, one end of capacitor C5 and the anode of Schottky diode RD32, and the other end of capacitor C5 is connected to the power ground. The negative electrode of the special base diode RD32 is used as the voltage signal output terminal of the lithium battery.

本实施方式中，本申请的锂电池车载充放电保护单元的使用不受锂电池电压的限制。In this embodiment, the use of the lithium battery on-board charge and discharge protection unit of the present application is not limited by the voltage of the lithium battery.

具体实施方式二：本实施方式是对具体实施方式一所述的具有保护功能的锂电池车载充放电电路作进一步说明，本实施方式中，供电电路3用于给二极管RD1的正极提供8.8V的供电电压。Specific embodiment 2: This embodiment is a further description of the lithium battery on-board charging and discharging circuit with protection function described in specific embodiment 1. In this embodiment, the power supply circuit 3 is used to provide 8.8V to the anode of the diode RD1 supply voltage.

具体实施方式三：本实施方式是对具体实施方式一或二所述的具有保护功能的锂电池车载充放电电路作进一步说明，本实施方式中，供电电路3包括电阻R12—R19、电容C6—C13、肖特基二极管RD26、稳压管RD14、二极管RD28、电感RL2、型号为TPS54360的电源芯片KU9和磁珠RL9，Specific embodiment 3: This embodiment is to further explain the lithium battery on-board charging and discharging circuit with protection function described in specific embodiment 1 or 2. In this embodiment, the power supply circuit 3 includes resistors R12-R19, capacitors C6- C13, Schottky diode RD26, Zener tube RD14, diode RD28, inductor RL2, power chip KU9 of model TPS54360 and magnetic bead RL9,

型号为TPS54360的电源芯片KU9的1号引脚连接电阻R16的一端，电阻R16的另一端连接电容C7的一端，电容C7的另一端同时连接型号为TPS54360的电源芯片KU9的8号引脚、肖特基二极管RD26的负极和电感RL2的一端，The No. 1 pin of the power chip KU9 of the model TPS54360 is connected to one end of the resistor R16, the other end of the resistor R16 is connected to one end of the capacitor C7, and the other end of the capacitor C7 is connected to the No. 8 pin of the power chip KU9 of the model TPS54360. The cathode of the special base diode RD26 and one end of the inductor RL2,

肖特基二极管RD26的正极同时连接型号为TPS54360的电源芯片KU9的7号引脚、电容C10的一端、电容C11的一端、电容C12的一端、电容C13的一端和电源地，The anode of the Schottky diode RD26 is connected to the No. 7 pin of the power chip KU9 of the model TPS54360, one end of the capacitor C10, one end of the capacitor C11, one end of the capacitor C12, one end of the capacitor C13 and the power ground.

电感RL2的另一端同时连接电容C10的另一端、电容C11的另一端、电容C12的另一端、电容C13的另一端、电阻R18的一端和磁珠RL9的一端，The other end of the inductor RL2 is simultaneously connected to the other end of the capacitor C10, the other end of the capacitor C11, the other end of the capacitor C12, the other end of the capacitor C13, one end of the resistor R18 and one end of the bead RL9,

磁珠RL9的另一端作为供电电路3的电源信号输出端，磁珠RL9的另一端连接电阻R18的一端，电阻R18的另一端同时连接电阻R19的一端和型号为TPS54360的电源芯片KU9的5号引脚，电阻R19的另一端连接电源地，The other end of the magnetic bead RL9 is used as the power signal output end of the power supply circuit 3, the other end of the magnetic bead RL9 is connected to one end of the resistor R18, and the other end of the resistor R18 is connected to one end of the resistor R19 and the No. 5 power chip KU9 of the model TPS54360 pin, the other end of the resistor R19 is connected to the power ground,

型号为TPS54360的电源芯片KU9的6号引脚同时连接电阻R17的一端和电容C9的一端，电阻R17的另一端连接电容C8的一端，电容C8的另一端同时连接电容C9的另一端和电源地，The No. 6 pin of the power chip KU9 of the model TPS54360 is connected to one end of the resistor R17 and one end of the capacitor C9 at the same time, the other end of the resistor R17 is connected to one end of the capacitor C8, and the other end of the capacitor C8 is connected to the other end of the capacitor C9 and the power ground at the same time ,

型号为TPS54360的电源芯片KU9的4号引脚连接电阻R15的一端，电阻R15的另一端连接电源地，The No. 4 pin of the power chip KU9 of model TPS54360 is connected to one end of the resistor R15, and the other end of the resistor R15 is connected to the power ground.

型号为TPS54360的电源芯片KU9的3号引脚同时连接电阻R12的一端、电阻R14的一端、稳压管RD14的负极、电容C6的一端和电阻R13的一端，The No. 3 pin of the power supply chip KU9 whose model is TPS54360 is connected to one end of the resistor R12, one end of the resistor R14, the negative pole of the regulator tube RD14, one end of the capacitor C6 and one end of the resistor R13.

电阻R14的另一端同时连接电源地、稳压管RD14的另一端和电容C6的另一端，电阻R13的另一端连接二极管RD28的负极，二极管RD28的正极作为供电电路3的电源控制信号输入端，The other end of the resistor R14 is connected to the power ground, the other end of the regulator tube RD14 and the other end of the capacitor C6 at the same time, the other end of the resistor R13 is connected to the cathode of the diode RD28, and the anode of the diode RD28 is used as the power supply control signal input end of the power supply circuit 3,

电阻R12的另一端同时连接整车蓄电池电压和型号为TPS54360的电源芯片KU9的2号引脚。The other end of the resistor R12 is simultaneously connected to the vehicle battery voltage and the No. 2 pin of the power chip KU9 whose model is TPS54360.

本实施方式中，整车蓄电池电压如果不经处理直接提供给锂电池充电电路，会导致图1的KT1压降过大，发热严重甚至烧毁。经计算与测试，利用R18和R19的阻值匹配，将“P10”电压调节至8.8V时，既能保证正常充电，也能降低KT1的压差，减少发热。二极管RD28的正极作为开关信号输出端，用于随时打开或关闭图1中的“P10”，从而达到打开或关闭锂电池充电的目的。In this embodiment, if the battery voltage of the whole vehicle is directly provided to the lithium battery charging circuit without processing, the voltage drop of KT1 in FIG. 1 will be too large, causing severe heat generation or even burning out. After calculation and testing, using the resistance matching of R18 and R19, when the voltage of "P10" is adjusted to 8.8V, it can not only ensure normal charging, but also reduce the voltage difference of KT1 and reduce heat generation. The anode of the diode RD28 is used as the output terminal of the switch signal, which is used to turn on or off the "P10" in Figure 1 at any time, so as to achieve the purpose of turning on or off the charging of the lithium battery.

具体实施方式四：本实施方式是对具体实施方式三所述的具有保护功能的锂电池车载充放电电路作进一步说明，本实施方式中，整车蓄电池电压为24V。Embodiment 4: This embodiment further explains the on-board charging and discharging circuit of lithium battery with protection function described in Embodiment 3. In this embodiment, the battery voltage of the whole vehicle is 24V.

Claims (4)

1.具有保护功能的锂电池车载充放电电路，其特征在于，它包括充电电路(1)、放电电路(2)、供电电路(3)和控制器(4)，1. The on-board charging and discharging circuit of lithium battery with protection function is characterized in that it comprises charging circuit (1), discharging circuit (2), power supply circuit (3) and controller (4), 控制器(4)的电源控制信号输出端连接供电电路(3)的电源控制信号输入端，供电电路(3)的电源信号输出端连接充电电路(1)的电源信号输入端，The power control signal output end of the controller (4) is connected to the power control signal input end of the power supply circuit (3), and the power signal output end of the power supply circuit (3) is connected to the power signal input end of the charging circuit (1), 控制器(4)的一个电平信号输出端连接充电电路(1)的电平信号输入端，充电电路(1)的充电信号输出端连接锂电池(5)的充电信号输入端，A level signal output end of the controller (4) is connected to the level signal input end of the charging circuit (1), and the charging signal output end of the charging circuit (1) is connected to the charging signal input end of the lithium battery (5), 控制器(4)的另一个电平信号输出端连接放电电路(2)的电平信号输入端，放电电路(2)的放电信号输出端连接锂电池(5)的放电信号输入端，Another level signal output end of the controller (4) is connected to the level signal input end of the discharge circuit (2), and the discharge signal output end of the discharge circuit (2) is connected to the discharge signal input end of the lithium battery (5), 充电电路(1)包括电阻R1—R7、电容C1—C3、型号为DG2057TT的充电芯片KU11、PMOS管KT1、二极管RD1、发光二极管DS1、三极管KT2和热敏电阻NR1，The charging circuit (1) includes resistors R1-R7, capacitors C1-C3, charging chip KU11 of model DG2057TT, PMOS tube KT1, diode RD1, light-emitting diode DS1, triode KT2 and thermistor NR1, 二极管RD1的正极作为充电电路(1)的电源信号输入端，The anode of the diode RD1 is used as the power signal input end of the charging circuit (1), 二极管RD1的负极同时连接电阻R1的一端、电阻R2的一端、型号为DG2057TT的充电芯片KU11的3号引脚、型号为DG2057TT的充电芯片KU11的8号引脚、电容C1的一端和电阻R3的一端，电容C1的另一端同时连接电源地和型号为DG2057TT的充电芯片KU11的6号引脚，The cathode of diode RD1 is connected to one end of resistor R1, one end of resistor R2, pin 3 of charging chip KU11 of model DG2057TT, pin 8 of charging chip KU11 of model DG2057TT, one end of capacitor C1 and the pin of resistor R3. One end, the other end of the capacitor C1 is connected to the power ground and the No. 6 pin of the charging chip KU11 whose model is DG2057TT. 型号为DG2057TT的充电芯片KU11的1号引脚同时连接电阻R1的另一端和PMOS管KT1的漏极，The No. 1 pin of the charging chip KU11 whose model is DG2057TT is connected to the other end of the resistor R1 and the drain of the PMOS transistor KT1 at the same time. PMOS管KT1的源极同时连接型号为DG2057TT的充电芯片KU11的2号引脚、电容C2的一端和电锂电池的正极，电容C2的另一端连接电源地，电容C2的两端输出的电压为锂电池(5)充电，The source of the PMOS tube KT1 is connected to the No. 2 pin of the charging chip KU11 of the model DG2057TT, one end of the capacitor C2 and the positive electrode of the lithium battery, the other end of the capacitor C2 is connected to the power ground, and the output voltage of the two ends of the capacitor C2 is Lithium battery (5) charging, PMOS管KT1的栅极同时连接电阻R2的一端和型号为DG2057TT的充电芯片KU11的7号引脚，The gate of the PMOS transistor KT1 is connected to one end of the resistor R2 and the No. 7 pin of the charging chip KU11 whose model is DG2057TT. 电阻R3的另一端同时连接型号为DG2057TT的充电芯片KU11的4号引脚、电阻R5的一端、三极管KT2的发射极和热敏电阻NR1的一端，热敏电阻NR1的另一端同时连接电源地、电阻R5的另一端、电阻R4的一端、电阻R6的一端和电容C3的一端，电阻R4的另一端连接发光二极管DS1的负极，发光二极管DS1的正极连接型号为DG2057TT的充电芯片KU11的5号引脚，The other end of the resistor R3 is simultaneously connected to the No. 4 pin of the charging chip KU11 of the model DG2057TT, one end of the resistor R5, the emitter of the triode KT2 and one end of the thermistor NR1, and the other end of the thermistor NR1 is connected to the power ground, The other end of the resistor R5, one end of the resistor R4, one end of the resistor R6 and one end of the capacitor C3, the other end of the resistor R4 is connected to the negative pole of the light-emitting diode DS1, and the positive pole of the light-emitting diode DS1 is connected to the No. 5 pin of the charging chip KU11 whose model is DG2057TT foot, 三极管KT2的基极同时连接电阻R6的另一端、电容C3的另一端和电阻R7的一端，电阻R7的另一端作为充电电路(1)的电平信号输入端；The base of the triode KT2 is connected to the other end of the resistor R6, the other end of the capacitor C3 and one end of the resistor R7 at the same time, and the other end of the resistor R7 is used as the level signal input terminal of the charging circuit (1); 放电电路(2)包括电阻R8—R11、电容C4—C5、三极管KT3、型号为AURF7416QTR的PMOS管KT25和肖特基二极管RD32，The discharge circuit (2) includes resistors R8-R11, capacitors C4-C5, triode KT3, PMOS tube KT25 and Schottky diode RD32 whose model is AURF7416QTR, 电阻R8的一端作为放电电路(2)的电平信号输入端，电阻R8的另一端同时连接电阻R9的一端、电容C4的一端和三极管KT3的基极，电容C4的另一端同时连接电阻R9的另一端、三极管KT3的发射极和电源地，One end of the resistor R8 is used as the level signal input end of the discharge circuit (2), the other end of the resistor R8 is connected to one end of the resistor R9, one end of the capacitor C4 and the base of the transistor KT3, and the other end of the capacitor C4 is connected to the resistor R9 at the same time. The other end, the emitter of the triode KT3 and the power ground, 三极管KT3的集电极连接电阻R10的一端，电阻R10的另一端同时连接电阻R11的一端和型号为AURF7416QTR的PMOS管KT25的4号引脚，The collector of the transistor KT3 is connected to one end of the resistor R10, and the other end of the resistor R10 is connected to one end of the resistor R11 and the 4th pin of the PMOS transistor KT25 whose model is AURF7416QTR. 电阻R11的另一端作为放电电路(2)的放电信号输出端，电阻R11的另一端同时连接锂电池的正极、型号为AURF7416QTR的PMOS管KT25的1号引脚至3号引脚，型号为AURF7416QTR的PMOS管KT25的5号引脚同时连接型号为AURF7416QTR的PMOS管KT25的6号引脚—8号引脚、电容C5的一端和肖特基二极管RD32的正极，电容C5的另一端连接电源地，肖特基二极管RD32的负极作为锂电池的电压信号输出端。The other end of the resistor R11 is used as the discharge signal output end of the discharge circuit (2), and the other end of the resistor R11 is simultaneously connected to the positive electrode of the lithium battery, the pin 1 to the pin 3 of the PMOS tube KT25 of the model AURF7416QTR, the model is AURF7416QTR The No. 5 pin of the PMOS tube KT25 is connected to the No. 6-8 pin of the PMOS tube KT25 of the model AURF7416QTR, one end of the capacitor C5 and the positive pole of the Schottky diode RD32, and the other end of the capacitor C5 is connected to the power ground , the cathode of the Schottky diode RD32 is used as the voltage signal output terminal of the lithium battery. 2.根据权利要求1所述的具有保护功能的锂电池车载充放电电路，其特征在于，供电电路(3)用于给二极管RD1的正极提供8.8V的供电电压。2. The lithium battery on-board charging and discharging circuit with protection function according to claim 1, characterized in that the power supply circuit (3) is used to provide a power supply voltage of 8.8V to the anode of the diode RD1. 3.根据权利要求1或2所述的具有保护功能的锂电池车载充放电电路，其特征在于，供电电路(3)包括电阻R12—R19、电容C6—C13、肖特基二极管RD26、稳压管RD14、二极管RD28、电感RL2、型号为TPS54360的电源芯片KU9和磁珠RL9，3. The lithium battery on-board charging and discharging circuit with protection function according to claim 1 or 2, characterized in that the power supply circuit (3) includes resistors R12-R19, capacitors C6-C13, Schottky diode RD26, voltage regulator Tube RD14, diode RD28, inductor RL2, power chip KU9 and magnetic bead RL9 of model TPS54360, 型号为TPS54360的电源芯片KU9的1号引脚连接电阻R16的一端，电阻R16的另一端连接电容C7的一端，电容C7的另一端同时连接型号为TPS54360的电源芯片KU9的8号引脚、肖特基二极管RD26的负极和电感RL2的一端，The No. 1 pin of the power chip KU9 of the model TPS54360 is connected to one end of the resistor R16, the other end of the resistor R16 is connected to one end of the capacitor C7, and the other end of the capacitor C7 is connected to the No. 8 pin of the power chip KU9 of the model TPS54360. The cathode of the special base diode RD26 and one end of the inductor RL2, 肖特基二极管RD26的正极同时连接型号为TPS54360的电源芯片KU9的7号引脚、电容C10的一端、电容C11的一端、电容C12的一端、电容C13的一端和电源地，The anode of the Schottky diode RD26 is connected to the No. 7 pin of the power chip KU9 of the model TPS54360, one end of the capacitor C10, one end of the capacitor C11, one end of the capacitor C12, one end of the capacitor C13 and the power ground. 电感RL2的另一端同时连接电容C10的另一端、电容C11的另一端、电容C12的另一端、电容C13的另一端、电阻R18的一端和磁珠RL9的一端，The other end of the inductor RL2 is simultaneously connected to the other end of the capacitor C10, the other end of the capacitor C11, the other end of the capacitor C12, the other end of the capacitor C13, one end of the resistor R18 and one end of the bead RL9, 磁珠RL9的另一端作为供电电路(3)的电源信号输出端，磁珠RL9的另一端连接电阻R18的一端，电阻R18的另一端同时连接电阻R19的一端和型号为TPS54360的电源芯片KU9的5号引脚，电阻R19的另一端连接电源地，The other end of the magnetic bead RL9 is used as the power signal output end of the power supply circuit (3), the other end of the magnetic bead RL9 is connected to one end of the resistor R18, and the other end of the resistor R18 is connected to one end of the resistor R19 and the power chip KU9 of the model TPS54360 Pin 5, the other end of the resistor R19 is connected to the power ground, 型号为TPS54360的电源芯片KU9的6号引脚同时连接电阻R17的一端和电容C9的一端，电阻R17的另一端连接电容C8的一端，电容C8的另一端同时连接电容C9的另一端和电源地，The No. 6 pin of the power chip KU9 of the model TPS54360 is connected to one end of the resistor R17 and one end of the capacitor C9 at the same time, the other end of the resistor R17 is connected to one end of the capacitor C8, and the other end of the capacitor C8 is connected to the other end of the capacitor C9 and the power ground at the same time , 型号为TPS54360的电源芯片KU9的4号引脚连接电阻R15的一端，电阻R15的另一端连接电源地，The No. 4 pin of the power chip KU9 of model TPS54360 is connected to one end of the resistor R15, and the other end of the resistor R15 is connected to the power ground. 型号为TPS54360的电源芯片KU9的3号引脚同时连接电阻R12的一端、电阻R14的一端、稳压管RD14的负极、电容C6的一端和电阻R13的一端，The No. 3 pin of the power supply chip KU9 whose model is TPS54360 is connected to one end of the resistor R12, one end of the resistor R14, the negative pole of the regulator tube RD14, one end of the capacitor C6 and one end of the resistor R13. 电阻R14的另一端同时连接电源地、稳压管RD14的另一端和电容C6的另一端，电阻R13的另一端连接二极管RD28的负极，二极管RD28的正极作为供电电路(3)的电源控制信号输入端，The other end of the resistor R14 is connected to the power ground, the other end of the regulator tube RD14 and the other end of the capacitor C6 at the same time, the other end of the resistor R13 is connected to the cathode of the diode RD28, and the anode of the diode RD28 is used as the power supply control signal input of the power supply circuit (3) end, 电阻R12的另一端同时连接整车蓄电池电压和型号为TPS54360的电源芯片KU9的2号引脚。The other end of the resistor R12 is simultaneously connected to the vehicle battery voltage and the No. 2 pin of the power chip KU9 whose model is TPS54360. 4.根据权利要求3所述的具有保护功能的锂电池车载充放电电路，其特征在于，整车蓄电池电压为24V。4. The lithium battery on-board charging and discharging circuit with protection function according to claim 3, characterized in that the battery voltage of the whole vehicle is 24V.
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CN103219778B (en) * 2013-05-02 2014-11-05 杭州电子科技大学 5V output mobile power supply
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CN103490112B (en) * 2013-09-23 2015-10-28 深圳市麦格松电气科技有限公司 The Universal rechargeable battery adopting lithium ion battery to form and control method
CN204216632U (en) * 2014-11-27 2015-03-18 北京拓盛电子科技有限公司 Battery discharge prevention circuit
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