CN-122025869-A - Energy storage system, control method, storage medium and electric equipment

CN122025869ACN 122025869 ACN122025869 ACN 122025869ACN-122025869-A

Abstract

The application discloses an energy storage system, a control method, a storage medium and electric equipment. The battery management system comprises a main control module and at least two slave control modules which are electrically connected. By providing a valve between at least one slave module and a corresponding battery, the valve is configured to have a first valve opening. On the one hand, under the condition that the valve is at the first valve opening, the electric energy interaction between at least one slave control module and the corresponding battery is disconnected, so that the master control module can be awakened to execute a preset function, and the master control module can execute the preset function according to the temperature data of the valve besides the battery operation parameters acquired by the slave control module, for example, whether thermal runaway occurs or not and execute corresponding fault operation is confirmed.

Inventors

WANG XIAOBIN
GUO LONGQING
FENG YANQIANG
XU YUHONG

Assignees

惠州亿纬锂能股份有限公司

Dates

Publication Date: 20260512
Application Date: 20251231

Claims (15)

1. An energy storage system, the energy storage system comprising: A battery; The battery management system comprises a main control module and at least two slave control modules which form electric connection, wherein at least one slave control module and the battery form electric energy interaction, and The valve is arranged between at least one slave control module and the corresponding battery, and is configured to have a first valve opening; the first temperature detection module is configured to detect temperature data of the valve and is electrically connected with the main control module; And under the condition that the valve is at the first valve opening, the electric energy interaction between at least one slave control module and the corresponding battery is disconnected so as to wake up the main control module to execute a preset function, wherein the preset function comprises the step of collecting temperature data of the valve and/or operating parameters of the battery.
2. The energy storage system of claim 1, wherein the master control module is further configured to: and under the condition that the temperature data of the valve is greater than or equal to a temperature threshold value, determining that the energy storage system fails.
3. The energy storage system of claim 2, wherein the first temperature detection module is disposed in one-to-one correspondence with the valves, and wherein the master control module is further configured to: And positioning the battery with faults according to the temperature data of the valve.
4. The energy storage system of claim 1, wherein the energy storage system comprises, The valve is further configured to have a second valve opening; under the condition that the valve is at the second valve opening, each slave control module and the corresponding battery form electric energy interaction, so that each slave control module respectively acquires the operating parameters of the battery; The second valve opening is smaller than the first valve opening.
5. The energy storage system of claim 4, wherein the energy storage system comprises, The first valve opening comprises a maximum opening, and/or The second valve opening comprises a minimum opening.
6. The energy storage system of claim 1, wherein the energy storage system comprises, And a first loop is arranged between each slave control module and the corresponding battery, and the valve is arranged in one of the first loops so as to control the on-off of the first loop in which the valve is positioned.
7. The energy storage system of claim 1, wherein the energy storage system comprises, The battery management system is further configured to enable each of the remaining slave control modules to respectively keep electric energy interaction with the corresponding battery under the condition that electric energy interaction between one of the slave control modules and the battery is disconnected, and each of the remaining slave control modules is electrically connected with the master control module.
8. The energy storage system of any of claims 1 to 7, The operating parameters of the battery include temperature data of the battery; The battery management system further includes: a second temperature detection module configured to detect temperature data of the battery; Each second temperature detection module is connected with the corresponding slave control module.
9. The energy storage system of any of claims 1-7, wherein the operating parameter of the battery comprises voltage data of the battery; The battery management system further includes: a voltage detection module configured to detect voltage data of the battery; each voltage detection module is connected with the corresponding slave control module.
10. The energy storage system of any of claims 1 to 7, The energy storage system is further configured to enable the valve to be at a first valve opening under the action of air pressure when the air pressure in the energy storage system reaches a first air pressure threshold value.
11. A control method of an energy storage system, characterized in that the method is applied to the energy storage system of any one of claims 1 to 10, The method comprises the following steps: and under the condition that the valve is at the opening of the first valve, the electric energy interaction between at least one slave control module and the corresponding battery is disconnected, so that the master control module is awakened to collect temperature data of the valve and/or operation parameters of the battery.
12. The control method according to claim 11, characterized in that the method further comprises: And positioning the battery with faults according to the temperature data of the valve.
13. The control method according to claim 11, characterized in that the method further comprises: Under the condition that the valve is at the second valve opening, each slave control module and the corresponding battery form electric energy interaction so that each slave control module can acquire the operating parameters of the battery respectively; Wherein the second valve opening is smaller than the first valve opening.
14. A computer readable storage medium, having stored thereon a computer program, the computer program being loaded by a processor to perform the steps of the method of any of claims 11 to 13.
15. A powered device comprising the energy storage system of any of claims 1-10.

Description

Energy storage system, control method, storage medium and electric equipment Technical Field The application relates to the technical field of battery thermal management, in particular to an energy storage system, a control method, a storage medium and electric equipment. Background Thermal runaway is a serious safety failure of battery systems. When a certain cell triggers thermal runaway, a large amount of high-temperature gas and heat can be instantaneously generated, so that the internal pressure and temperature of the energy storage system are rapidly increased. If the high temperature and flame cannot be effectively isolated, the adjacent cells can be triggered to generate a chain thermal runaway reaction, namely heat spreading, and finally the whole energy storage system can be triggered to fire and explode. The BMS can collect signals of voltage, temperature, pressure, etc. in real time when the vehicle is running (operating state) to determine whether thermal runaway occurs. However, when the vehicle is in a stopped state, the BMS may enter a sleep mode in order to save power. In the parking stall state, most of the sensing functions of the BMS are turned off. If the battery is thermally out of control at this time, the BMS cannot sense and wake up by itself, and thus cannot perform a corresponding malfunction operation. In the related art, the wake-up of the BMS depends on an electronic wake-up signal, and the reliability is low. Disclosure of Invention The embodiment of the application provides an energy storage system, a control method, a storage medium and electric equipment, which improve the awakening reliability of a battery management system and at least partially solve the technical problems. To achieve the above object, according to a first aspect of the present application, there is provided an energy storage system comprising: A battery; The battery management system comprises a main control module and at least two slave control modules which form electric connection, wherein at least one slave control module and the battery form electric energy interaction, and The valve is arranged between at least one slave control module and the corresponding battery, and is configured to have a first valve opening; the first temperature detection module is configured to detect temperature data of the valve and is electrically connected with the main control module; And under the condition that the valve is at the first valve opening, the electric energy interaction between at least one slave control module and the corresponding battery is disconnected so as to wake up the main control module to execute a preset function, wherein the preset function comprises the step of collecting temperature data of the valve and/or operating parameters of the battery. By providing a valve between at least one slave module and a corresponding battery, the valve is configured to have a first valve opening. On the one hand, under the condition that the valve is at the first valve opening, the electric energy interaction between at least one slave control module and the corresponding battery is disconnected, so that the master control module can be awakened to execute a preset function, and the master control module can execute the preset function according to the temperature data of the valve besides the battery operation parameters acquired by the slave control module, for example, whether thermal runaway occurs or not and execute corresponding fault operation is confirmed. On the other hand, through mechanical valve, control from the accuse module and the electric energy interaction between the battery that corresponds, need not to set up alone and discern the sensor of valve state and carry out the transmission of sensor signal, effectively reduced battery system's structure complexity, avoid the mistake under the non-fault scene to wake up, further promoted the precision that the thermal runaway trouble was discerned, avoid the invalid early warning that single signal misjudgement led to, perhaps can't smoothly transmit the condition of sensor signal. Optionally, the main control module is further configured to determine that the energy storage system fails when the temperature data of the valve is greater than or equal to a temperature threshold. After the main control module is awakened, the temperature data of the valve and the battery operation parameters are combined to judge whether the battery has a thermal runaway fault or not. The false alarm of judging whether the battery has the thermal runaway fault according to the single data is avoided, and the accuracy of judging whether the battery has the thermal runaway fault is improved. Optionally, the first temperature detection modules are arranged in one-to-one correspondence with the valves, and the main control module is further configured to locate the failed battery according to the temperature data of the valves. By confirming the position of the bat