Battery module and insulating plate

Patent metadata

Field	Value
Publication number	US-11705605-B2
Application number	US-202117145286-A
Country	US
Kind code	B2
Filing date	Jan 9, 2021
Priority date	Jun 28, 2019
Publication date	Jul 18, 2023
Grant date	Jul 18, 2023

Abstract

The present application relates to a battery module. The battery module includes a battery group and an insulating plate. The battery group includes a bus bar and a plurality of battery units, each battery unit includes a tab which includes a connecting segment and a bending segment. The insulating plate includes a plurality of plate assemblies, and the adjacent plate assemblies are connected through a connecting plate. There is an obtuse angle between each plate assembly and the connecting plate connected thereto. Each connecting segment passes through a guiding groove, and the bending segment and the bus bar are fixed and connected. The guiding groove can adjust the altitude of the tab as it passes through the insulating plate. The bending segment can be connected to the bus bar, then the process requirements can be met with a small space, which improves the energy density of the battery module.

First claim

What is claimed is:

1. A battery module, comprising: a battery group and an insulating plate;
wherein the battery group comprises a bus bar and a plurality of battery units, each battery unit comprises a tab; and the bus bar is configured to be fixed at one side of the insulating plate away from the battery group;
wherein the insulating plate comprises a plurality of plate assemblies, a plurality of the plate assemblies comprises adjacent a first plate assembly and a second assembly; the first plate assembly connects with the second plate assembly by a connecting plate; there is an obtuse first angle between the first plate assembly and the connecting plate connected thereto; and there is an obtuse first angle between the second plate assembly and the connecting plate connected thereto;
each plate assembly comprises a first plate and a second plate; the second plate of the first plate assembly connects with the first plate of the second plate assembly by the connecting plate; the second plate of the first plate assembly and the first plate of the second plate assembly are bent set relative to the connecting plate respectively; the second plate of the first plate assembly, the first plate of the second plate assembly and the connecting plate enclose a groove;
and the plate assembly comprises a guiding groove, and each tab is configured to pass through the guiding groove and be fixed and connected to the bus bar.

2. The battery module according to claim 1 , wherein the guiding groove is disposed at a junction of the first plate and the second plate.

3. The battery module according to claim 1 , wherein there is an obtuse second angle between the first plate and the second plate.

4. The battery module according to claim 1 , wherein the tab comprises a connecting segment and a bending segment which are integrally formed;
and the connecting segment is configured to pass through the guiding groove, and the bending segment is configured to be fixed and connected to the bus bar.

5. The battery module according to claim 4 , wherein face-to-face attachment and fixing is formed between the bending segment and the bus bar.

6. The battery module according to claim 4 , wherein the connecting segment extends along a lengthwise direction of the battery group;
and the bending segment extends along a widthwise direction of the battery group.

7. The battery module according to claim 1 , wherein a buckle is disposed at one side of the insulating plate away from the battery group;
and the bus bar is configured to be snap-fitted and fixed to the buckle.

8. The battery module according to claim 1 , wherein the insulating plate comprises a first insulating plate and a second insulating plate;
the first insulating plate and the second insulating plate are disposed at two ends of the battery group along a lengthwise direction.

9. The battery module according to claim 8 , wherein the tab comprises a first tab and a second tab;
a connecting segment of each first tab is configured to pass through the guiding groove of the first insulating plate;
and a connecting segment of each second tab is configured to pass through the guiding groove of the second insulating plate.

10. The battery module according to claim 9 , wherein the bus bar comprises a first bus bar and a second bus bar;
a bending segment of each first tab is configured to be fixed and connected to the first bus bar;
and a bending segment of each second tab is configured to be fixed and connected to the second bus bar.

11. The battery module according to claim 1 , wherein the battery module further comprises a lower box body;
the battery group, the insulating plate and the bus bar are all disposed in the lower box body.

12. The battery module according to claim 11 , wherein an inner wall of the lower box body is provided with a slot;
two ends of the insulating plate are provided with an extending portion; and the extending portion is configured to be snap-fitted and fixed to the slot.

13. The battery module according to claim 1 , each plate assembly and the connecting plate connected thereto are integrally formed.

14. An insulating plate, wherein the insulating plate is disposed between a bus bar and a battery group, the insulating plate comprises a plurality of plate assemblies, a plurality of the plate assemblies comprises adjacent a first plate assembly and a second assembly; the first plate assembly connects with the second plate assembly by a connecting plate; there is an obtuse first angle between the first plate assembly and the connecting plate connected thereto; and there is an obtuse first angle between the second plate assembly and the connecting plate connected thereto;
each plate assembly comprises a first plate and a second plate; the second plate of the first plate assembly connects with the first plate of the second plate assembly by the connecting plate; the second plate of the first plate assembly and the first plate of the second plate assembly are bent set relative to the connecting plate respectively; the second plate of the first plate assembly, the first plate of the second plate assembly and the connecting plate enclose a groove;
and the plate assembly comprises a guiding groove, and each tab is configured to pass through the guiding groove and be fixed and connected to the bus bar.

15. The insulating plate according to claim 14 , wherein there is an obtuse second angle between the first plate and the second plate.

16. The insulating plate according to claim 14 , wherein a buckle which is configured to be snap-fitted and fixed to the bus bar is disposed at one side of the insulating plate away from the battery group.

17. The insulating plate according to claim 14 , each plate assembly and the connecting plate connected thereto are integrally formed.

18. A vehicle, comprising a battery module, the battery module comprising:
a battery group and an insulating plate;
wherein the battery group comprises a bus bar and a plurality of battery units, each battery unit comprises a tab; and the bus bar is configured to be fixed at one side of the insulating plate away from the battery group;
wherein the insulating plate comprises a plurality of plate assemblies, a plurality of the plate assemblies comprises adjacent a first plate assembly and a second assembly; the first plate assembly connects with the second plate assembly by a connecting plate; there is an obtuse first angle between the first plate assembly and the connecting plate connected thereto; and there is an obtuse first angle between the second plate assembly and the connecting plate connected thereto;
each plate assembly comprises a first plate and a second plate; the second plate of the first plate assembly connects with the first plate of the second plate assembly by the connecting plate; the second plate of the first plate assembly and the first plate of the second plate assembly are bent set relative to the connecting plate respectively; the second plate of the first plate assembly, the first plate of the second plate assembly and the connecting plate enclose a groove;
and the plate assembly comprises a guiding groove, and each tab is configured to pass through the guiding groove and be fixed and connected to the bus bar.

19. The battery module according to claim 3 , wherein the second angle is disposed towards the battery group, and the guiding groove is disposed at a vertex of the second angle.

20. The battery module according to claim 1 , wherein a plurality of bus bars are dispose

Assignees

• Contemporary Amperex Technology Co Ltd

Inventors

• You Zhiyi
• Zhang Hua
• Qin Feng
• Chen Liangmei
• Wang Liangyi
• He Runyong

Classifications

• H01M50/507 Primary

  comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules · CPC title

• H01M50/207

  characterised by their shape · CPC title

• H01M50/593

  Spacers; Insulating plates · CPC title

• H01M50/505 Primary

  comprising a single busbar · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title