CN-224232728-U - Liquid cooling assembly and energy storage device

CN224232728UCN 224232728 UCN224232728 UCN 224232728UCN-224232728-U

Abstract

The application discloses a liquid cooling assembly and an energy storage device, wherein the liquid cooling assembly comprises a first liquid cooling component, a second liquid cooling component and a connecting component, the connecting component is provided with a main runner, a first runner and a second runner which are mutually communicated, the first runner is communicated with the first liquid cooling component, the second runner is communicated with the second liquid cooling component, and the main runner is used for being communicated with an external liquid supply device or a liquid outlet device. Compared with the prior art, the application realizes synchronous liquid supply of the first liquid cooling component and the second liquid cooling component through the connecting component, and the cooling liquid enters the first liquid cooling component and the second liquid cooling component simultaneously through the first flow channel and the second flow channel, so that the problem that the cooling liquid in the traditional serial structure needs to flow through the two liquid cooling components in sequence is avoided. The flow paths of the cooling liquid in the two liquid cooling components are mutually independent, so that the flow resistance superposition effect in the series structure is eliminated, the pressure balance at the inlets of the two liquid cooling components is ensured, the temperature of the cooling liquid in the two liquid cooling components is ensured to be consistent, and the problem of uneven cooling efficiency is solved.

Inventors

Gu Zhanzhang
CUI YALIN
LAI LIBING
WANG XIANGCHENG
ZHENG GUANGYI

Assignees

惠州亿纬锂能股份有限公司

Dates

Publication Date: 20260512
Application Date: 20250604

Claims (10)

1. A liquid cooling assembly, comprising: A first liquid cooling member; The first liquid cooling component and the second liquid cooling component are respectively arranged on different sides of the material; The connecting part is provided with a main runner, a first runner and a second runner which are communicated with each other, the first runner is communicated with the first liquid cooling part, the second runner is communicated with the second liquid cooling part, and the main runner is used for being communicated with an external liquid supply device or a liquid outlet device.
2. The liquid cooling assembly of claim 1, wherein the second liquid cooling member comprises a first cooling tube and a second cooling tube, the first cooling tube and the second cooling tube being disposed at intervals along a width direction of the second liquid cooling member, one end of the first cooling tube being in communication with the second flow passage, and the other end being in communication with the second cooling tube.
3. The liquid cooling assembly of claim 2, wherein the second liquid cooling component comprises a first header and a second header, the first header and the second header being connected to opposite ends of the first cooling tube, respectively, the first header and the second header being connected to opposite ends of the second cooling tube, respectively; The first collecting pipe comprises a liquid inlet flow channel and a liquid outlet flow channel which are not communicated with each other, the liquid inlet flow channel is communicated with the first cooling pipe, the liquid outlet flow channel is communicated with the second cooling pipe, the first cooling pipe is communicated with the second cooling pipe through the second collecting pipe, and the second flow channel is communicated with the first cooling pipe through the liquid inlet flow channel.
4. The liquid cooling assembly according to claim 2, wherein the first cooling tube or the second cooling tube comprises a main body portion and a bending portion, the bending portion is connected to opposite ends of the main body portion, and the bending portion extends in a fold line in a length direction of the main body portion.
5. The liquid cooling assembly according to claim 2, wherein the first cooling tube or the second cooling tube comprises a main body portion and a protruding portion, the main body portion is connected with a plurality of protruding portions at intervals along the length direction thereof, the protruding portions are located on one side of the width direction of the main body portion, and the protruding portions are used for attaching materials.
6. The liquid cooling assembly according to any one of claims 1-5, wherein the connecting component comprises a first connecting piece and a second connecting piece, the first connecting piece is provided with the main flow channel, the first flow channel and the second flow channel, and the second liquid cooling component is communicated with the second flow channel through the second connecting piece; The second connecting piece comprises a first part, a second part and a third part, wherein the second part is connected with the first part in an included angle, the second part is connected with the third part in an included angle, the first part is communicated with the second flow channel, and the third part is communicated with the second liquid cooling component.
7. The liquid cooling assembly of claim 6, wherein the second portion extends in a straight line or in a broken line.
8. The liquid cooling module according to any one of claims 1 to 5, wherein the first liquid cooling member is formed with a first liquid cooling chamber, the second liquid cooling member is formed with a second liquid cooling chamber, and a volume of the first liquid cooling chamber is larger than a volume of the second liquid cooling chamber, or The first liquid cooling component is formed with a first liquid cooling surface, the second liquid cooling component is formed with a second liquid cooling surface, the area of the first liquid cooling surface is larger than that of the second liquid cooling surface, and the first liquid cooling surface and the second liquid cooling surface are both used for attaching materials.
9. The liquid cooling assembly according to any one of claims 1 to 5, wherein the number of the connecting members is two, the two connecting members are connected to the same side of the first liquid cooling member, one of the connecting members is used for connecting an external liquid supply device, and the other connecting member is used for connecting an external liquid outlet device.
10. An energy storage device, characterized by, including the liquid cooling subassembly of any one of claims 1~9 and box and battery package, the battery package is located inside the box, first liquid cooling part with the second liquid cooling part connect respectively in the different sides of box, just first liquid cooling part with the second liquid cooling part respectively with the laminating of the different sides of battery package.

Description

Liquid cooling assembly and energy storage device Technical Field The application relates to the technical field of new energy batteries, in particular to a liquid cooling assembly and an energy storage device. Background With the continuous increase of the energy density of the power battery and the popularization of the fast charging technology, the power battery thermal management system faces the increasingly severe heat dissipation requirement. In order to improve temperature uniformity, the prior art proposes a double-sided liquid cooling scheme, and a liquid cooling plate connected in series is arranged at the top and the bottom of a battery module, so that cooling liquid sequentially flows through the bottom liquid cooling plate and the top liquid cooling plate to form a continuous flow channel. However, there is an inherent disadvantage in that the flow resistance is superimposed and the series arrangement results in a total flow resistance that is the sum of the resistances of the two stages of the liquid cooling plates, the pressure is significantly attenuated as the cooling liquid flows to the top liquid cooling plate, the flow rate is reduced, and the heat exchange efficiency of the top region is severely impaired. The temperature gradient is unbalanced, and the bottom liquid cooling plate absorbs heat of the battery first, so that the initial temperature of the cooling liquid flowing into the top liquid cooling plate is increased, and a significant difference is formed between the top heat dissipation capacity and the bottom. And under transient working conditions, the cooling liquid in the series pipeline can reach the top only after the bottom flow channel is filled, delay response is generated, and rapid rising of the temperature of the battery can not be restrained in time. Disclosure of utility model In view of the shortcomings of the prior art, the application provides a liquid cooling assembly, which can improve the heat insulation efficiency of a battery pack in thermal runaway. In order to achieve the above purpose, the present application adopts the following technical scheme: The liquid cooling assembly comprises a first liquid cooling component, a second liquid cooling component and a connecting component, wherein the first liquid cooling component and the second liquid cooling component are respectively arranged on different sides of materials, the connecting component is provided with a main runner, a first runner and a second runner which are mutually communicated, the first runner is communicated with the first liquid cooling component, the second runner is communicated with the second liquid cooling component, and the main runner is used for being communicated with an external liquid supply device or a liquid outlet device. As one embodiment, the second liquid cooling component comprises a first cooling pipe and a second cooling pipe, the first cooling pipe and the second cooling pipe are arranged at intervals along the width direction of the second liquid cooling component, one end of the first cooling pipe is communicated with the second flow passage, and the other end of the first cooling pipe is communicated with the second cooling pipe. The second liquid cooling component comprises a first collecting pipe and a second collecting pipe, wherein the first collecting pipe and the second collecting pipe are respectively connected to two opposite ends of the first cooling pipe, the first collecting pipe and the second collecting pipe are respectively connected to two opposite ends of the second cooling pipe, the first collecting pipe comprises a liquid inlet channel and a liquid outlet channel which are not communicated with each other, the liquid inlet channel is communicated with the first cooling pipe, the liquid outlet channel is communicated with the second cooling pipe, the first cooling pipe is communicated with the second cooling pipe through the second collecting pipe, and the second flow channel is communicated with the first cooling pipe through the liquid inlet channel. As one embodiment, the first cooling pipe or the second cooling pipe includes a main body portion and a bending portion, the bending portion is connected to opposite ends of the main body portion, and the bending portion extends in a fold line in a length direction of the main body portion. As one embodiment, the first cooling pipe or the second cooling pipe comprises a main body part and a protruding part, wherein the main body part is connected with a plurality of protruding parts at intervals along the length direction of the main body part, the protruding parts are positioned on one side of the width direction of the main body part, and the protruding parts are used for attaching materials. As one embodiment, the connecting component comprises a first connecting piece and a second connecting piece, the first connecting piece is provided with the main runner, the first runner and the second runner