CN-224232688-U - Liquid cooling battery module with compound fire control structure

Abstract

A liquid cooling battery module with a composite fire-fighting structure belongs to the technical field of battery fire-fighting. The liquid cooling box is internally provided with a cooling liquid flow passage and is connected with a temperature-sensing fire-fighting valve body, an induction end of the temperature-sensing fire-fighting valve body is arranged in the liquid cooling battery module and used for controlling the opening and closing of a liquid outlet of the cooling liquid flow passage, the liquid cooling box is connected with a box cover to form a sealed space, a battery module is arranged in the sealed space, one end of the box cover is provided with a fire control panel and a quick-plugging terminal panel, the fire control panel is provided with a sampling wire harness socket, the sampling wire harness socket is connected with a battery module cell, the quick-plugging terminal panel is provided with a quick-plugging terminal, and the quick-plugging terminal is connected with the battery module cell. According to the utility model, by constructing a composite fire-fighting structure of a real-time monitoring mechanism, an aerogel fire-fighting mechanism, a gas fire-fighting mechanism and a liquid cooling fire-fighting mechanism, the multi-stage prevention and control of the thermal runaway and the thermal diffusion of the liquid cooling battery module are realized, a three-dimensional protection barrier for the liquid cooling battery module is formed, and the re-burning risk is effectively blocked.

Inventors

• WANG ZHENXIN
• YANG QIJUN
• LI HUI
• LIU HEPENG

Assignees

• 昆宇电源股份有限公司

Dates

Publication Date

20260512

Application Date

20250418

Claims (5)

1. 1. A liquid cooling battery module with a composite fire-fighting structure is characterized by comprising a box cover (1), a liquid cooling box body (2), a fire-fighting control panel (3), a fast plug-in terminal panel (4), a battery module (5) and a temperature-sensitive fire-fighting valve body (7), wherein an S-shaped cooling liquid flow channel (10) is arranged in the liquid cooling box body (2), a liquid inlet (8) and a liquid outlet (9) of the cooling liquid flow channel (10) are formed in the liquid cooling box body (2), the liquid cooling box body (2) is in threaded sealing connection with the temperature-sensitive fire-fighting valve body (7), an induction end of the temperature-sensitive fire-fighting valve body (7) is arranged in the liquid cooling battery module, the temperature-sensitive fire-fighting valve body (7) is used for controlling the opening and closing of the liquid outlet (9) of the cooling liquid flow channel (10), the upper end of the liquid cooling box body (2) is fixedly connected with the box cover (1) in a sealing manner, a sealing space is formed between the liquid cooling box body (2) and the box cover (1), the battery module (5) is arranged in the sealing space, one end of the box cover (1) is fixedly provided with the control panel (3) and the fast plug-in the fire-fighting valve body (3) is connected with a sampling wire harness (13) through the sampling wire harness (13), the fast plug-in terminal panel (4) is provided with a fast plug-in terminal (19), and the fast plug-in terminal (19) is connected with the battery core (11) of the battery module (5).
2. 2. The liquid-cooled battery module with the composite fire-fighting structure of claim 1, wherein the fire-fighting control panel (3) is further provided with a pressure relief valve (14).
3. 3. The liquid cooling battery module with the composite fire-fighting structure of claim 2, wherein the fire control panel (3) is further provided with a PACK-level fire-fighting detector (15) and a gas fire-fighting injection unit (16) which are connected through signal transmission, the sensing end of the PACK-level fire-fighting detector (15) and the inner end of the gas fire-fighting injection unit (16) are arranged inside the liquid cooling battery module, and the outer end of the gas fire-fighting injection unit (16) is connected with a fire-fighting steel cylinder.
4. 4. A liquid-cooled battery module with a composite fire protection structure as claimed in claim 1 or 3, wherein the fast plug terminal panel (4) is further provided with a manual maintenance switch (18).
5. 5. The liquid-cooled battery module with a composite fire protection structure according to claim 4, wherein aerogel (12) is mounted on both sides of each cell (11) in the battery module (5).

Description

Liquid cooling battery module with compound fire control structure Technical Field The utility model relates to a liquid cooling battery module with a composite fire-fighting structure, and belongs to the technical field of battery fire-fighting. Background In order to avoid fire caused by thermal runaway and thermal diffusion of the energy storage battery module, the energy storage battery module is required to have a composite fire-fighting structure such as a modularized fire-fighting design, a rapid fire-fighting design, a composite fire-fighting design and an early warning system design, so that fire can be effectively controlled, and loss is reduced. The traditional energy storage battery module has a single fire-fighting mode, and mainly comprises the step of spraying fire extinguishing agents such as heptafluoropropane from a storage steel bottle through a gas fire-fighting pipeline until the whole energy storage battery compartment is full of the fire extinguishing agents, so that the purposes of isolating oxygen and reducing temperature and extinguishing fire are achieved. However, due to space and function limitations, the energy storage battery module is provided with a limited amount of fire extinguishing agent, and the fire extinguishing agent may be sprayed completely, but thermal runaway and thermal diffusion are not completely controlled, and then re-combustion occurs, thereby causing more serious safety accidents. Therefore, it becomes particularly important to improve the fire safety reliability of the energy storage battery module. Disclosure of utility model In order to solve the problems in the background technology, the utility model provides a liquid cooling battery module with a composite fire-fighting structure. The liquid cooling battery module with the composite fire-fighting structure comprises a box cover, a liquid cooling box body, a fire-fighting control panel, a fast-inserting terminal panel, a battery module and a temperature-sensing fire-fighting valve body, wherein an S-shaped cooling liquid flow channel is arranged in the liquid cooling box body, a liquid inlet and a liquid outlet of the cooling liquid flow channel are formed in the liquid cooling box body, the liquid cooling box body is in threaded sealing connection with the temperature-sensing fire-fighting valve body, an induction end of the temperature-sensing fire-fighting valve body is arranged in the liquid cooling battery module, the temperature-sensing fire-fighting valve body is used for controlling opening and closing of the liquid outlet of the cooling liquid flow channel, the upper end of the liquid cooling box body is fixedly connected with the box cover in a sealing mode, a fire-fighting control panel and the fast-inserting terminal panel are arranged in the sealing mode, a sampling wire harness socket is arranged on the fire-fighting control panel and is connected with an electric core of the battery module, and a fast-inserting terminal is arranged on the fast-inserting terminal panel and is connected with the electric core of the battery module. And the fire control panel is also provided with a pressure release valve. The fire control panel is further provided with a PACK-level fire-fighting detector and a gas fire-fighting injection unit which are connected through signal transmission, the sensing end of the PACK-level fire-fighting detector and the inner end of the gas fire-fighting injection unit are both arranged inside the liquid cooling battery module, and the outer end of the gas fire-fighting injection unit is connected with a fire-fighting steel cylinder. And a manual maintenance switch is also arranged on the quick plug-in terminal panel. Aerogel is installed to the both sides of every electric core in the battery module. Compared with the prior art, the utility model has the beneficial effects that: According to the utility model, by constructing a composite fire-fighting structure of a real-time monitoring mechanism, an aerogel fire-fighting mechanism, a gas fire-fighting mechanism and a liquid cooling fire-fighting mechanism, the multi-stage prevention and control of the thermal runaway and the thermal diffusion of the liquid cooling battery module are realized, a three-dimensional protection barrier for the liquid cooling battery module is formed, and the re-burning risk is effectively blocked. Meanwhile, the physical and chemical properties and action time sequences of different fire-fighting mechanisms are fully considered, thermal runaway and thermal diffusion are effectively restrained, and the fire-fighting reliability of the liquid-cooled battery module is improved while the safety of personnel and the safety of equipment property are ensured. Drawings FIG. 1 is a schematic diagram of the structure of the present utility model; FIG. 2 is a split view of FIG. 1; FIG. 3 is a schematic view of the structure of the liquid cooling tank; Fig. 4 is a schematic structural view of a battery