Temperature control assembly and battery pack

Patent metadata

Field	Value
Publication number	US-12211985-B2
Application number	US-202017123026-A
Country	US
Kind code	B2
Filing date	Dec 15, 2020
Priority date	Jun 18, 2019
Publication date	Jan 28, 2025
Grant date	Jan 28, 2025

Abstract

The present application provides a temperature control assembly and a battery pack. The temperature control assembly includes a first side plate, a second side plate, and an elastic thermal pad. The elastic thermal pad has a main body that includes: a first plate section close to the first side plate in a longitudinal direction and extending in a vertical direction; a second plate section close to the second side plate in the longitudinal direction and extending in the vertical direction; and a connection section extending obliquely from the first side plate toward the second side plate and connected to the first and second plate sections. Due to elastic and structural characteristics of the elastic thermal pad, the main body of the elastic thermal pad is deformed under the action of extrusion to absorb the expansion forces of the batteries in time, thus greatly improving the service life of the batteries.

First claim

What is claimed is:

1. A temperature control assembly disposed in a battery pack, the temperature control assembly comprising:
a first side plate abutting a first battery of the battery pack, the first side plate comprises a first body, configured to extend in a vertical direction; and two first extension portions, each of the first extension portions is configured to be connected to one end of the first body and extend in a longitudinal direction;
a second side plate abutting a second battery of the battery pack, disposed relative to the first side plate along a longitudinal direction of the temperature control assembly, wherein the second side plate is connected to the first side plate and forms a cavity together with the first side plate; and
at least one elastic thermal pad, movably disposed in the cavity to divide the cavity into a plurality of passages, wherein
the elastic thermal pad comprises a main body, and the main body comprises:
a first plate section, configured to be close to the first side plate in the longitudinal direction and extend in a vertical direction of the temperature control assembly, wherein the first plate section is distanced from the second side plate;
a second plate section, configured to be close to the second side plate in the longitudinal direction and extend in the vertical direction; and
a connection section, configured to extend obliquely from the first side plate toward the second side plate and be connected to the first plate section and the second plate section, wherein the main body of the elastic thermal pad is deformed under an action of extrusion of the first side plate and the second side plate to absorb expansion forces of the first battery and/or the second battery,
wherein the elastic thermal pad further comprises a compression portion disposed between and connected to one of the first extension portions and one end of the main body, the compression portion is formed as an arch structure and comprises: a third plate section, configured to extend in the vertical direction and be spaced from the first side plate and the second side plate in the longitudinal direction; a first extrusion section, configured to extend obliquely from the third plate section toward the first side plate and be connected to the third plate section and the main body; and a second extrusion section, configured to extend obliquely from the third plate section toward the first side plate and be connected to the third plate section and one of the first extension portions.

2. The temperature control assembly according to claim 1 , wherein
two ends of the elastic thermal pad in the vertical direction are respectively abutted against the corresponding first extension portion of the first side plate.

3. The temperature control assembly according to claim 1 , wherein
the compression portion is disposed so that when the first plate section and the second plate section of the main body are compressed by the first side plate and the second side plate in the longitudinal direction, the compression portion is compressed by the main body and deformed.

4. The temperature control assembly according to claim 1 , wherein
the elastic thermal pad further comprises a connecting portion, configured to be located between the compression portion and the first extension portion in the vertical direction and connected to the second extrusion section of the compression portion; and
when the first plate section and the second plate section of the main body are compressed by the first side plate and the second side plate in the longitudinal direction, the connecting portion abuts against the first extension portion of the first side plate, and the first extension portion compresses the compression portion together with the main body via the connecting portion.

5. The temperature control assembly according to claim 1 , wherein
there is one elastic thermal pad.

6. The temperature control assembly according to claim 1 , wherein
there are at least two elastic thermal pads, and the at least two elastic thermal pads comprise a first elastic thermal pad and a second elastic thermal pad;
the temperature control assembly further comprises a partition plate, configured to extend in the longitudinal direction and be connected to the first side plate and the second side plate; and
the first elastic thermal pad is disposed above the partition plate, and the second elastic thermal pad is disposed below the partition plate.

7. A battery pack comprising a plurality of batteries and a temperature control assembly, wherein the plurality of batteries is arranged in a longitudinal direction of the temperature control assembly and comprises a first battery and a second battery, and the temperature control assembly is disposed between the first battery and the second battery, wherein the temperature control assembly comprises:
a first side plate abutting the first battery and directly facing a large surface of the first battery along the longitudinal direction, the first side plate comprises a first body, configured to extend in a vertical direction; and two first extension portions, each of the first extension portions is configured to be connected to one end of the first body and extend in the longitudinal direction;
a second side plate abutting the second battery and directly facing a large surface of the second battery along the longitudinal direction, wherein the second side plate is connected to the first side plate and forms a cavity together with the first side plate; and
an elastic thermal pad, disposed in the cavity to divide the cavity into a plurality of passages, wherein
the elastic thermal pad comprises a main body, and the main body comprises:
a first plate section, configured to be close to the first side plate in the longitudinal direction and extend in a vertical direction of the temperature control assembly;
a second plate section, configured to be close to the second side plate in the longitudinal direction and extend in the vertical direction; and
a connection section, configured to extend obliquely from the first side plate toward the second side plate and be connected to the first plate section and the second plate section, wherein the main body of the elastic thermal pad is deformed under an action of extrusion of the first side plate and the second side plate to absorb expansion forces of the first battery and/or the second battery
wherein the elastic thermal pad further comprises a compression portion disposed between and connected to one of the first extension portions and one end of the main body, the compression portion is formed as an arch structure and comprises: a third plate section, configured to extend in the vertical direction and be spaced from the first side plate and the second side plate in the longitudinal direction; a first extrusion section, configured to extend obliquely from the third plate section toward the first side plate and be connected to the third plate section and the main body; and a second extrusion section, configured to extend obliquely from the third plate section toward the first side plate and be connected to the third plate section and one of the first extension portions.

8. The apparatus according to claim 7 , wherein the first plate section is in contact with the first side plate, and the second plate section is in contact with the second side plate.

9. An apparatus comprising a battery pack, wherein the battery pack is configured to provide electrical energy and the battery pack comprises a plurality of batteries and a temperature control assembly, wherein the plurality of batteries is arranged in a longitudinal direction of the temperature control assembly and comprises a first batte

Assignees

• Contemporary Amperex Technology Hong Kong Ltd

Inventors

• Wu Buwei
• Huang Yincheng
• Su Yongqiang
• Zhou Linggang
• Zhao Fenggang
• Chen Songqiao

Classifications

• H01M10/6557 Primary

  arranged between the cells · CPC title

• H01M50/209

  adapted for prismatic or rectangular cells (H01M50/216 takes precedence) · CPC title

• H01M10/647

  Prismatic or flat cells, e.g. pouch cells · CPC title

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title

• F16F2236/045

  the spring material being generally enclosed · CPC title