Energy storage battery system and control method of battery thermal runaway

Patent metadata

Field	Value
Publication number	US-12567622-B2
Application number	US-202217893210-A
Country	US
Kind code	B2
Filing date	Aug 23, 2022
Priority date	Aug 23, 2022
Publication date	Mar 3, 2026
Grant date	Mar 3, 2026

Abstract

The disclosure provides an energy storage battery system, including a battery cluster and a first communicating unit. The battery cluster includes at least one battery module, and the battery module includes at least one battery cell. The first communicating unit is used to connect with a high-pressure pump, and external cooling fluid can be pressurized by the high-pressure pump and transmitted to the first communicating unit to cause the first communicating unit to burst, and after the first communicating unit bursts, the cooling fluid is sprayed to the battery cell. The disclosure further provides a control method of battery thermal runaway.

First claim

What is claimed is:

1 . An energy storage battery system comprising a battery cluster and a first communicating unit, the battery cluster comprising at least one battery module, the battery module comprising at least one battery cell, wherein the first communicating unit is configured to connect with a high-pressure pump, and external cooling fluid is capable of being pressurized by the high-pressure pump and transmitted to the first communicating unit to cause the first communicating unit to burst, and after the first communicating unit bursts, the cooling fluid is sprayed to the battery cell;
the energy storage battery system further comprises a second communicating unit, the first communicating unit and the second communicating unit are both communicated with the battery cell; the second communicating unit is configured to connect with a low-pressure pump, and external cooling fluid is capable of being transmitted to an interior of the battery cell using the low-pressure pump.

2 . The energy storage battery system according to claim 1 , wherein the first communicating unit is arranged on a top of the battery cell, and the first communicating unit is communicated with the top of the battery cell; the second communicating unit is arranged on a bottom of the battery cell, and the second communicating unit is communicated with the bottom of the battery cell.

3 . The energy storage battery system according to claim 1 , wherein the first communicating unit comprises a first main pipe and a cell discharge pipe, the first main pipe is configured to connect with the high-pressure pump, and the battery cell is communicated with the first main pipe through the cell discharge pipe; a pressurizing pressure of the high-pressure pump is greater than a bursting pressure of the cell discharge pipe, and the external cooling fluid is capable of being pressurized through the high-pressure pump and transmitted to the cell discharge pipe through the first main pipe to cause the cell discharge pipe to burst, and the cooling fluid is sprayed to the battery cell after the cell discharge pipe bursts.

4 . The energy storage battery system according to claim 3 , wherein a pressure resistant performance of the cell discharge pipe decreases with an increase of temperature of the cell discharge pipe.

5 . The energy storage battery system according to claim 3 , wherein the high-pressure pump is connected with one end of the first main pipe.

6 . The energy storage battery system according to claim 3 , wherein the first main pipe is provided with a pressure sensor.

7 . The energy storage battery system according to claim 3 , wherein a fire hood and a pressure relief valve are arranged above the battery cell, and the fire hood covers the cell discharge pipe and the pressure relief valve.

8 . The energy storage battery system according to claim 3 , wherein the second communicating unit comprises a second main pipe and a cell inlet pipe, the second main pipe is configured to connect with the low-pressure pump, and the battery cell is communicated with the second main pipe through the cell inlet pipe.

9 . The energy storage battery system according to claim 8 , wherein the low-pressure pump is connected with one end of the second main pipe.

10 . The energy storage battery system according to claim 8 , wherein the first main pipe and the cell discharge pipe are both arranged on a top of the battery cell, and the cell discharge pipe is communicated with the top of the battery cell; the second main pipe and the cell inlet pipe are both arranged on a bottom of the battery cell, and the cell inlet pipe is communicated with the bottom of the battery cell.

11 . The energy storage battery system according to claim 8 , wherein at least a portion of the cell inlet pipe is a hose, and/or at least a portion of the cell discharge pipe is a hose.

12 . The energy storage battery system according to claim 8 , wherein a one-way valve is arranged on the cell inlet pipe and/or the cell discharge pipe.

13 . The energy storage battery system according to claim 8 , wherein the battery module comprises a plurality of battery cells; the first communicating unit further comprises a first branch pipe, and the second communicating unit further comprises a second branch pipe; the cell discharge pipes on the plurality of battery cells are first summarized to the first branch pipe and then communicated to the first main pipe through the first branch pipe, the cell inlet pipes on the plurality of battery cells are first summarized to the second branch pipe and then communicated to the second main pipe through the second branch pipe.

14 . The energy storage battery system according to claim 1 , wherein a composite sensor is arranged on a top of the battery cluster.

15 . The energy storage battery system according to claim 1 , wherein the battery cluster further comprises a busbar connected with the battery cell, and the busbar is provided with a temperature sensor.

Assignees

• Microvast Power Systems Co Ltd
• Microvast Inc

Inventors

• Xiao Ningqiang
• Zhao Heng
• Mattis Wenjuan Liu
• Wu Shengxian
• Deng Guoyou

Classifications

• H01M10/486

  for measuring temperature · CPC title

• H01M10/482

  for several batteries or cells simultaneously or sequentially · CPC title

• H01M50/317

  Re-sealable arrangements · CPC title

• H01M50/383 Primary

  Flame arresting or ignition-preventing means · CPC title

• H01M50/505

  comprising a single busbar · CPC title