CN113580937B - An automatic dormancy control system for lithium-ion power battery systems - Google Patents

An automatic dormancy control system for lithium-ion power battery systems Download PDF

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Publication number
CN113580937B
CN113580937B CN202111030887.5A CN202111030887A CN113580937B CN 113580937 B CN113580937 B CN 113580937B CN 202111030887 A CN202111030887 A CN 202111030887A CN 113580937 B CN113580937 B CN 113580937B
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circuit
power
sleep
power supply
dormancy
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CN113580937A (en
Inventor
吴绍栋
何俐鹏
王敏
徐英君
钟磊
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Hangzhou Vmhstar Technology Co ltd
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Hangzhou Vmhstar Technology Co ltd
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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
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • 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
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/60—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements
    • H02J7/663—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements using battery or load disconnect circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/855—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
    • 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
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • 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

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

The invention relates to the field of batteries, in particular to an automatic dormancy control system applied to a lithium-ion power battery system, which comprises a controller, a dormancy circuit, a power supply circuit and a power-on circuit, wherein the controller, the dormancy circuit, the power supply circuit and the power-on circuit are sequentially and electrically connected, the controller is used for sending a control instruction for controlling the disconnection of the dormancy circuit to the dormancy circuit when an automatic dormancy condition is met, the dormancy circuit is used for receiving the control instruction for controlling the disconnection of the dormancy circuit sent by the controller and disconnecting the control instruction, the power supply circuit is used for controlling power supply and stopping power supply when the dormancy circuit is disconnected, and the power-on circuit is used for controlling power-on of electric equipment and controlling the electric equipment to be powered down when the power supply circuit stops power supply. When the automatic dormancy condition is met, all power supply equipment can be electrified, so that the condition that the battery core is empty is ensured not to occur, and the discharge performance and the service life of the battery core are not affected.

Description

Automatic dormancy control system applied to lithium-ion power battery system
Technical Field
The invention relates to the field of batteries, in particular to an automatic dormancy control system applied to a lithium-ion power battery system.
Background
In recent years, with the great increase of new energy automobile industry, the novel power lithium ion battery becomes an ideal power source of a new generation of electric automobiles by virtue of the excellent performance of the novel power lithium ion battery. The power supply systems of the electric fork truck, the sightseeing tour bus, the electric bicycle, the golf cart and the like all adopt a system scheme taking lithium electricity as a power source. The key point is that the power battery needs to have stable, efficient and durable working capacity, and the most important point is that enough electric quantity and good electric core consistency can be still maintained after the vehicle is not used for a long time, so that the normal operation of the vehicle is ensured.
However, the existing power supply system schemes in the market have certain hidden trouble, namely, the power supply system comprises various power consumption devices such as contactors, buzzers, switching power supplies, LEDs, display instruments, GPRS and the like. The biggest disadvantage is that when a user forgets to turn off a switch (turn off a power supply) after using up the vehicle, the above equipment consumes the energy of a battery, if the power supply is not turned off after a period of time, the condition that the battery core is empty (the battery core is 0V) can appear for a long time, the performance and the consistency of the battery core are greatly damaged, the cycle times and the service life of the battery core are reduced, the great influence is brought to future application, the later maintenance cost is increased, and the safety performance of the system is influenced.
Disclosure of Invention
In order to solve the above problems, the present invention provides an automatic sleep control system applied to a lithium-ion power battery system.
The embodiment of the invention provides an automatic dormancy control system applied to a lithium-ion power battery system, which comprises a controller, a dormancy circuit, a power supply circuit and a power-on circuit, wherein the controller, the dormancy circuit, the power supply circuit and the power-on circuit are sequentially and electrically connected, the controller is used for sending a control instruction for controlling the disconnection of the dormancy circuit to the dormancy circuit when an automatic dormancy condition is met, the dormancy circuit is used for receiving the control instruction for controlling the disconnection of the dormancy circuit sent by the controller and disconnecting the control instruction, the power supply circuit is used for controlling power supply and stopping power supply when the dormancy circuit is disconnected, and the power-on circuit is used for controlling power-on of electric equipment and controlling power-off of the electric equipment when the power supply circuit stops power supply.
In an embodiment, the sleep circuit includes MOS transistors Q2, Q4, resistors R1, R3, R10, R13, and diodes D3, D6, D64, where the G pole of MOS transistor Q2 is connected to one end of resistors R3 and R10, the other end of resistor R3 is connected to the negative pole of diode D6, the positive pole of diode D6 is connected to the controller, the other end of resistor R10 is connected to the common ground, the S pole of MOS transistor Q2 is connected to the common ground, the D pole of MOS transistor Q2 is connected to one end of resistor R1, the other end of resistor R1 is connected to the G pole of MOS transistor Q4, one end of resistor R13, and the positive pole of diode D64, the S pole of MOS transistor Q4 is connected to the other end of resistor R13, the negative pole of diode D64, and the negative pole of diode D3, and the D pole of MOS transistor Q4 is connected to the power-on circuit.
In one embodiment, the power supply circuit includes a power supply chip U1, and the power supply chip is connected to the sleep circuit and the power supply circuit.
In an embodiment, the power chip is model LM5017.
In an embodiment, the power-on circuit comprises a relay K1 and a connector, wherein a first end of the relay contact is connected with the power supply circuit, a second end of the relay contact is connected with a first end of the connector, the first end and the second end of the relay coil are conducted, and a fourth end of the connector is connected with the dormant circuit.
In an embodiment, the circuit further comprises a reset circuit, wherein the reset circuit is connected with the power supply circuit.
In one embodiment, the reset circuit includes a reset switch K2 for controlling the power circuit to operate, and the reset switch K2 is connected to the power circuit.
The controller sends a control instruction for controlling the disconnection of the dormant circuit to the dormant circuit when the automatic dormant condition is met, the dormant circuit receives the control instruction for controlling the disconnection of the dormant circuit sent by the controller and is disconnected, the power supply circuit stops supplying power when the dormant circuit is disconnected, and the power supply circuit controls the electric equipment to be powered down when the power supply circuit stops supplying power. When the automatic dormancy condition is met, all power supply equipment can be electrified, namely, the energy of a battery is not consumed by the equipment, so that the battery core is ensured not to be in a emptying state, the discharging performance and the service life of the battery core are not influenced, the condition that the battery cannot be used due to electricity consumption in the next use is ensured, and the sustainable usability of the product and good use experience of customers are improved.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
Fig. 1 is a schematic structural diagram of an automatic sleep control system applied to a lithium-ion power battery system according to an embodiment of the present invention;
FIG. 2 is a circuit diagram of a current sleep circuit in an automatic sleep control system for a lithium-ion power battery system according to an embodiment of the present invention;
Fig. 3 is a circuit diagram of a power supply circuit in an automatic sleep control system applied to a lithium-ion power battery system according to an embodiment of the present invention;
fig. 4 is a circuit diagram of a power-on circuit in an automatic sleep control system applied to a lithium-ion power battery system according to an embodiment of the present invention;
Fig. 5 is a schematic structural diagram of a reset circuit in an automatic sleep control system applied to a lithium-ion power battery system according to an embodiment of the present invention;
fig. 6 is a circuit diagram of a reset circuit in an automatic sleep control system for a lithium-ion power battery system according to an embodiment of the present invention.
Detailed Description
The technical scheme of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these examples.
The invention provides an automatic dormancy control system applied to a lithium-ion power battery system, which is shown in fig. 1 and comprises a controller 101, a dormancy circuit 102, a power supply circuit 103 and a power-on circuit 104, wherein the controller 101, the dormancy circuit 102, the power supply circuit 103 and the power-on circuit 104 are sequentially and electrically connected, the controller 101 is used for sending a control instruction for controlling the disconnection of the dormancy circuit to the dormancy circuit when an automatic dormancy condition is met, the dormancy circuit 102 is used for receiving the control instruction for controlling the disconnection of the dormancy circuit sent by the controller and disconnecting the control instruction, the power supply circuit 103 is used for controlling power supply and stopping supplying power when the dormancy circuit is disconnected, and the power-on circuit 104 is used for controlling power-on of electric equipment and controlling power failure of the electric equipment when the power supply circuit stops supplying power.
When the automatic dormancy condition is met, all power supply equipment can be electrified, namely, the energy of a battery is not consumed by the equipment, so that the battery core is ensured not to be in a emptying state, the discharging performance and the service life of the battery core are not influenced, the situation that the battery cannot be used due to electricity consumption in the next use is avoided, and the sustainable usability of the product and good use experience of customers are improved.
Wherein the auto-sleep condition includes one or more of detecting that the system is not operating or charging for more than a set threshold time, such as 48 hours, or detecting that the system battery voltage or the remaining battery capacity is below a set threshold, such as a nominal 48V module voltage drops below 38V, or the remaining battery capacity is <5% (this condition threshold is set).
As shown in fig. 2, the sleep circuit includes MOS transistors Q2, Q4, resistors R1, R3, R10, R13, and diodes D3, D6, D64, where the G pole of MOS transistor Q2 is connected to one end of resistors R3 and R10, the other end of resistor R3 is connected to the negative pole of diode D6, the positive pole of diode D6 is connected to the controller, the other end of resistor R10 is connected to the common ground, the S pole of MOS transistor Q2 is connected to the common ground, the D pole of MOS transistor Q2 is connected to one end of resistor R1, the other end of resistor R1 is connected to the G pole of MOS transistor Q4, one end of resistor R13, and the positive pole of diode D64, the S pole of MOS transistor Q4 is connected to the other end of resistor R13, the negative pole of diode D64, and the negative pole of diode D3, and the D pole of MOS transistor Q4 is connected to the upper circuit.
As shown in fig. 3, the power supply circuit includes a power supply chip U1, the model of which is LM5017, and the power supply chip is connected to the sleep circuit and the power supply circuit. The power chip further includes a peripheral connection circuit including resistors R46, R47, R48, a capacitor C11, and a capacitor C2 connected to the power chip U1.
As shown in fig. 4, the power-on circuit includes a relay K1 and a connector J2, where a first end of a contact of the relay K1 is connected to the power supply circuit, a second end of the contact of the relay K1 is connected to a first end of the connector J2, the first end and the second end of the relay coil are turned on through a diode D4, a diode D5 and a resistor R6, and a fourth end of the connector is connected to the sleep circuit.
In one embodiment, as shown in fig. 5, the automatic sleep control system further includes a reset circuit 105, where the reset circuit 105 is connected to the power supply circuit 103.
As shown in fig. 6, the reset circuit includes a reset switch K2 for controlling the power circuit to operate, the reset switch K2 is connected to the power circuit, and the reset circuit further includes a connector J1 connected to the reset switch K2.
The power-on function principle of the control system is that when a reset switch K2 of the system is closed (3-5S is closed), electricity B+ of a module can supply power to a power chip U1, the power chip can work normally, one path of 12V power supply is output in a depressurization mode to control the relay K1 to be attracted, the electricity of the module supplies power to the subsequent whole system through the relay K1 (normal power supply of the system is controlled through controlling the relay K1), the system operates normally, a path of signal BMS_DO is output after the system operates normally to control the MOS tube Q2 to be conducted, then the MOS tube Q4 is controlled to be conducted, B+ of the module continuously supplies power to the power chip U1 through the MOS tube Q4, the relay K1 is enabled to keep attracted, namely the system continues to supply power normally (even if the reset switch K2 is disconnected), when the actual situation meets automatic dormancy conditions, the control signal BMS_DO of the system controls the MOS tube Q2 to be disconnected, the power supply of the power chip U1 is disconnected, the relay K1 is disconnected, and the whole system is cut off, and therefore the power supply of the whole system is cut off. When the battery is used next time, the system is only required to be restarted, so that the consumption of the electric quantity of the lithium battery power module is reduced, and the performance and the service life of the battery core are indirectly ensured.
Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (5)

1.一种应用于锂电动力电池系统的自动休眠控制系统，其特征在于，包括控制器、休眠电路、电源电路以及上电电路，所述控制器、休眠电路、电源电路、上电电路依次电连接；其中，所述控制器用于当满足自动休眠条件时，向休眠电路发送控制休眠电路断开的控制指令；所述休眠电路用于接收控制器发送的控制休眠电路断开的控制指令并断开；所述电源电路用于控制供电，并在休眠电路断开时停止供电；所述上电电路用于控制用电设备上电，并在电源电路停止供电时，控制用电设备掉电；自动休眠条件包括在一定时间内检测到系统在超过设定的阈值时间内没有工作，或者检测到系统电池电压或者电池的剩余容量低于设定的阈值时中的一个或多个条件；1. An automatic sleep control system for a lithium power battery system, characterized in that it comprises a controller, a sleep circuit, a power circuit and a power-on circuit, wherein the controller, the sleep circuit, the power circuit and the power-on circuit are electrically connected in sequence; wherein the controller is used to send a control instruction to the sleep circuit to control the sleep circuit to be disconnected when the automatic sleep condition is met; the sleep circuit is used to receive the control instruction sent by the controller to control the sleep circuit to be disconnected and disconnect; the power circuit is used to control the power supply and stop the power supply when the sleep circuit is disconnected; the power-on circuit is used to control the power-on of the electric device and control the power-off of the electric device when the power circuit stops supplying power; the automatic sleep condition includes one or more of the following conditions: detecting that the system has not worked for a time exceeding a set threshold within a certain period of time, or detecting that the system battery voltage or the remaining capacity of the battery is lower than a set threshold; 所述休眠电路包括MOS管Q2、Q4、电阻R1、R3、R10、R13以及二极管D3、D6、D64，所述MOS管Q2的G极连接电阻R3和R10的一端，所述电阻R3的另一端连接二极管D6的负极，所述二极管D6的正极连接控制器，所述电阻R10的另一端连接公共地，所述MOS管Q2的S极连接公共地，所述MOS管Q2的D极连接电阻R1的一端，所述电阻R1的另一端连接MOS管Q4的G极、电阻R13的一端以及二极管D64的正极，所述MOS管Q4的S极连接电阻R13的另一端、二极管D64的负极以及二极管D3的负极，所述MOS管Q4的D极连接上电电路；The sleep circuit includes MOS tubes Q2, Q4, resistors R1, R3, R10, R13 and diodes D3, D6, D64, the G pole of the MOS tube Q2 is connected to one end of the resistors R3 and R10, the other end of the resistor R3 is connected to the cathode of the diode D6, the anode of the diode D6 is connected to the controller, the other end of the resistor R10 is connected to the common ground, the S pole of the MOS tube Q2 is connected to the common ground, the D pole of the MOS tube Q2 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to the G pole of the MOS tube Q4, one end of the resistor R13 and the anode of the diode D64, the S pole of the MOS tube Q4 is connected to the other end of the resistor R13, the cathode of the diode D64 and the cathode of the diode D3, and the D pole of the MOS tube Q4 is connected to the power-on circuit; 所述上电电路包括继电器K1以及连接器J2，所述继电器K1触点的第一端连接电源电路，继电器K1触点的第二端连接连接器J2的第一端，所述继电器线圈的第一端和第二端导通，所述连接器J2的第四端连接休眠电路。The power-on circuit includes a relay K1 and a connector J2, the first end of the contact of the relay K1 is connected to the power circuit, the second end of the contact of the relay K1 is connected to the first end of the connector J2, the first end and the second end of the relay coil are conductive, and the fourth end of the connector J2 is connected to the sleep circuit. 2.根据权利要求1所述的一种应用于锂电动力电池系统的自动休眠控制系统，其特征在于，所述电源电路包括电源芯片U1，所述电源芯片连接休眠电路以及供电电路。2. An automatic sleep control system for a lithium power battery system according to claim 1, characterized in that the power circuit comprises a power chip U1, and the power chip is connected to the sleep circuit and the power supply circuit. 3.根据权利要求2所述的一种应用于锂电动力电池系统的自动休眠控制系统，其特征在于，所述电源芯片的型号为LM5017。3. The automatic sleep control system for a lithium power battery system according to claim 2, characterized in that the model of the power chip is LM5017. 4.根据权利要求1～3任一项所述的一种应用于锂电动力电池系统的自动休眠控制系统，其特征在于，还包括复位电路，所述复位电路连接电源电路。4. An automatic sleep control system for a lithium-ion power battery system according to any one of claims 1 to 3, characterized in that it also includes a reset circuit, and the reset circuit is connected to a power supply circuit. 5.根据权利要求4所述的一种应用于锂电动力电池系统的自动休眠控制系统，其特征在于，所述复位电路包括用于控制电源电路工作的复位开关K2，所述复位开关K2连接电源电路。5. An automatic sleep control system for a lithium power battery system according to claim 4, characterized in that the reset circuit comprises a reset switch K2 for controlling the operation of a power circuit, and the reset switch K2 is connected to the power circuit.
CN202111030887.5A 2021-09-03 2021-09-03 An automatic dormancy control system for lithium-ion power battery systems Active CN113580937B (en)

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CN112910052A (en) * 2021-03-12 2021-06-04 合肥同智机电控制技术有限公司 Automatic dormancy protection control device of lithium cell group
CN215944307U (en) * 2021-09-03 2022-03-04 杭州微慕科技有限公司 Automatic dormancy control system applied to lithium battery power battery system

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