Battery and battery apparatus

Patent metadata

Field	Value
Publication number	US-11611134-B2
Application number	US-202117372489-A
Country	US
Kind code	B2
Filing date	Jul 11, 2021
Priority date	May 14, 2021
Publication date	Mar 21, 2023
Grant date	Mar 21, 2023

Abstract

The disclosure relates to a technical field of batteries, and a battery and a battery apparatus are provided. The battery includes a cell, and the cell includes a cell body and tab portions. Each of the tab portions extends from one side of the cell body. The battery further includes a housing. The housing is a hollow structure, and the hollow structure is formed inside the housing. The cell is disposed in the housing, and the housing includes a first surface and a second surface opposite to each other. The first surface is provided with liquid injecting holes, and the liquid injecting holes penetrate the first surface and do not penetrate the second surface. An orthographic projection of the cell body on the first surface does not overlap the liquid injecting holes.

First claim

What is claimed is:

1. A battery, comprising:
a cell, comprising a cell body and tab portions, wherein the tab portions are extending from opposite sides of the cell body;
a housing, wherein the cell is disposed in the housing, the housing comprises a first surface and a second surface opposite to each other, the first surface is provided with liquid injecting holes, the liquid injecting holes penetrate the first surface and do not penetrate the second surface, and an orthographic projection of the cell body onto the first surface does not overlap the liquid injecting holes; and
holders, disposed in the housing, wherein each of the holders is located on one side of the cell body, wherein the holders support between the first surface and the second surface of the housing and are located between an end side surface of the housing and a tab portion extending surface of the cell body,
wherein each of the holders is provided with a liquid inlet hole and a liquid inlet channel, a projection of the liquid inlet hole on the first surface at least partially overlaps the liquid injecting holes, a portion of each of the holders provided with the liquid inlet hole abuts against the first surface, and one end of the liquid inlet channel communicates with the liquid inlet hole.

2. The battery according to claim 1 , wherein a central axis of each of the liquid injecting holes is parallel to a tab portion extending surface of the cell body.

3. The battery according to claim 2 , wherein an internal space of the housing comprises a cell body accommodating zone and tab portion accommodating zones, the cell body accommodating zone is configured to accommodate the cell body, the tab portion accommodating zones are configured to accommodate the tab portions, the housing comprises a cell body section and tab portion sections, each of the tab portion sections is located on one side of the cell body section, the cell body section surrounds and forms the cell body accommodating zone, the tab portion sections surround and form the tab portion accommodating zones, and the liquid injecting holes are disposed on the tab portion sections.

4. The battery according to claim 1 , wherein the liquid injecting holes are disposed at corners of the first surface, a length of each of first sides forming each of the corners is a, a length of each of second sides forming each of the corners is b, a distance between each of the liquid injecting holes and each of the second sides is h 1 , a distance between each of the liquid injecting holes and each of the first sides is h 2 , a≥b, 1/600a≤h 1 ≤ 1/25a, and 1/100b≤h 2 ≤⅕b.

5. The battery according to claim 1 , wherein each of the tab portions comprises two or more single tabs extending from a side surface of the cell body, and an overlapping direction of the single tabs is a first direction when the single tabs are flattened in a direction perpendicular to the side surface of the cell body,
wherein the first surface is one of the opposite two surfaces of the housing in the first direction.

6. The battery according to claim 3 , wherein each of the tab portions comprises two or more single tabs extending from a side surface of the cell body, and an overlapping direction of the single tabs is a first direction when the single tabs are flattened in a direction perpendicular to the side surface of the cell body,
wherein the first surface is one of the opposite two surfaces of the housing in the first direction.

7. The battery according to claim 4 , wherein each of the tab portions comprises two or more single tabs extending from a side surface of the cell body, and an overlapping direction of the single tabs is a first direction when the single tabs are flattened in a direction perpendicular to the side surface of the cell body,
wherein the first surface is one of the opposite two surfaces of the housing in the first direction.

8. The battery according to claim 5 , wherein orthographic projections of the single tabs onto the first surface do not overlap the liquid injecting holes.

9. The battery according to claim 6 , wherein orthographic projections of the single tabs onto the first surface do not overlap the liquid injecting holes.

10. The battery according to claim 7 , wherein orthographic projections of the single tabs onto the first surface do not overlap the liquid injecting holes.

11. The battery according to claim 1 , wherein a number of the liquid injecting holes is at least two, and two of the liquid injecting holes are diagonally arranged.

12. The battery according to claim 1 , wherein the liquid inlet channel is provided with a flow guide.

13. The battery according to claim 12 , wherein each of the holders comprises:
a first connecting plate, wherein the liquid inlet hole is disposed on the first connecting plate;
a second connecting plate, wherein the second connecting plate and the first connecting plate are opposite to each other; and
supports, connected between the first connecting plate and the second connecting plate.

14. The battery according to claim 13 , wherein the flow guide is disposed between the first connecting plate and the second connecting plate, and an orthographic projection of the flow guide onto the first connecting plate at least partially overlaps the liquid inlet hole.

15. The battery according to claim 14 , wherein the flow guide is connected between the adjacent two supports, and the orthographic projection of the flow guide onto the first connecting plate covers the liquid inlet hole.

16. The battery according to claim 14 , wherein the flow guide comprises a flow guide surface, and one end of the flow guide surface close to the second connecting plate is inclined towards the cell body.

17. The battery according to claim 15 , wherein the flow guide comprises a flow guide surface, and one end of the flow guide surface close to the second connecting plate is inclined towards the cell body.

18. A battery apparatus, comprising the battery according to claim 1 .

Assignees

• Calb Co Ltd

Inventors

• Pan Fangfang
• Xu Jiuling
• Qi Binwei
• Zhang Yongjie

Classifications

• H01M6/00 Primary

  Primary cells; Manufacture thereof · CPC title

• H01M10/04

  Construction or manufacture in general (H01M10/058, H01M10/12, H01M10/28, H01M10/38 take precedence) · CPC title

• H01M50/627 Primary

  Filling ports · CPC title

• H01M50/477

  characterised by their shape · CPC title

• H01M50/618

  Pressure control · CPC title