Battery and power consuming device having the same

Patent metadata

Field	Value
Publication number	US-2024136679-A1
Application number	US-202318400838-A
Country	US
Kind code	A1
Filing date	Dec 29, 2023
Priority date	Feb 7, 2020
Publication date	Apr 25, 2024
Grant date	—

Abstract

A battery includes a battery cell and a casing assembly for receiving the battery cell. The battery cell includes a first electrode tab. The battery further includes an insulating member and a conductive member, the insulating member is connected between the casing assembly and the conductive member. The casing assembly defines a first through hole, and the insulating member defines a second through hole connected to the first through hole. The first electrode tab is electrically connected to the conductive member. A power consuming device including the battery is further provided. The conductive member of the present disclosure substitutes for the terminal post of existing art, increasing the energy density of the battery.

First claim

What is claimed is:

1 . A battery, comprising:
a battery cell having a first electrode tab and a second electrode tab, the second electrode tab having a different polarity from the first electrode tab; a casing assembly, wherein the battery cell is disposed in the casing assembly; and a conductive member being fixed to the casing assembly by a continuous layer of an insulating material, the insulating material being adhesive;
wherein
the casing assembly comprises a first casing and a second casing;
the first casing has a bottom portion and a sidewall surrounding the bottom portion, together defining a receiving space for the battery cell;
the second casing is a flat plate, the second casing is connected with the first casing at an edge of the sidewall and covers the receiving space;
a first through hole is provided in the second casing, the bottom portion or the sidewall; and the insulating material has a second through hole, the second through hole overlaps with the first through hole, the conductive member is fixed to a surface of the casing assembly through the insulating material, the conductive member covers the first through hole and the second through hole, and a diameter of the first through hole is greater than a diameter of the second through hole; and
the first electrode tab is electrically connected to the conductive member, and the second electrode tab is electrically connected to the bottom portion or the sidewall of the first casing.

2 . The battery according to claim 1 , wherein the first through hole is provided in the second casing, the insulation material adheres to a surface of the second casing, and the conductive member is fixed to the surface of the second casing through the insulating material.

3 . The battery according to claim 2 , wherein the insulating material adheres to an inner surface of the second casing and the conductive member is fixed to the inner surface of the second casing through the insulating material.

4 . The battery according to claim 2 , wherein the insulating material adheres to an outer surface of the second casing, and the conductive member is fixed to the outer surface of the second casing through the insulating material.

5 . The battery according to claim 1 , wherein the insulating material is located on the bottom portion, the insulation material adheres to a surface of the bottom portion, and the conductive member is fixed to the surface of the second casing through the insulating material.

6 . The battery according to claim 5 , wherein the insulating material adheres to an inner surface of the bottom portion and the conductive member is fixed to the inner surface of the bottom portion through the insulating material.

7 . The battery according to claim 5 , wherein the insulating material adheres to an outer surface of the bottom portion, and the conductive member is fixed to the outer surface of the bottom portion through the insulating material.

8 . The battery according to claim 1 , wherein the first through hole is provided in the sidewall, the insulation material adheres to a surface of the sidewall, and the conductive member is fixed to the surface of the sidewall through the insulating material.

9 . The battery according to claim 8 , wherein the insulating material adheres to an inner surface of the sidewall and the conductive member is fixed to the inner surface of the sidewall through the insulating material.

10 . The battery according to claim 8 , wherein the insulating material adheres to an outer surface of the sidewall, and the conductive member is fixed to the outer surface of the sidewall through the insulating material.

11 . The battery according to claim 1 , wherein the conductive member seals the battery cell in the casing assembly.

12 . The battery according to claim 1 , wherein the second casing comprises a liquid injection hole.

13 . The battery according to claim 1 , wherein the insulating material is made of at least one selected from the group consisting of polyolefin, polyvinyl chloride, and fluoro-elastomer.

14 . The battery according to claim 13 , wherein the insulating material is made of nonpolar polyolefin and insulating particles dispersed in the nonpolar polyolefin.

15 . The battery according to claim 1 , wherein a thickness of the insulating material layer is in a range from 0.01 mm to 0.3 mm, and a thickness of the conductive member is in a range from 0.1 mm to 2 mm.

16 . The battery according to claim 1 , wherein a central axis of the second through hole is aligned with a central axis of the first through hole, and a projection of the second through hole on the second casing is entirely located in the first through hole or covers the first through hole.

17 . The battery according to claim 1 , wherein a central axis of the second through hole is not aligned with a central axis of the first through hole, and a projection of the second through hole on the second casing is entirely located in the first through hole or covers the first through hole.

18 . The battery according to claim 1 , wherein a width of the conductive member is smaller than a width of the second casing.

19 . The battery according to claim 1 , wherein the battery cell further comprises a first electrode plate and a second electrode plate, the first electrode tab and the second electrode tab are electrically connected to the first electrode plate and the second electrode plate respectively, and the first electrode plate and the second electrode plate are stacked or wound to form the battery cell.

20 . The battery according to claim 1 , wherein the first through hole and the second through hole are circular, and a diameter of each of the first through hole and the second through hole is not more than 100 mm.

21 . The battery according to claim 1 , wherein the bottom portion and the sidewall are integrally disposed.

22 . A power consuming device powered by a battery, wherein the battery comprises:
a battery cell having a first electrode tab and a second electrode tab, the second electrode tab having a different polarity from the first electrode tab; a casing assembly receiving the battery cell, and a conductive member being fixed to the casing assembly by a continuous layer of an insulating material, the insulating material being adhesive;
wherein
the casing assembly comprises a first casing and a second casing;
the first casing has a bottom portion and a sidewall surrounding the bottom portion, together defining a receiving space for receiving the battery cell;
the second casing is a flat plate, the second casing is connected with the first casing at an edge of the sidewall and covers the receiving space;
a first through hole is located on the second casing, the bottom portion or the sidewall; and the insulating material has a second through hole, the second through hole overlaps with the first through hole, the conductive member is fixed to a surface of the casing assembly through the insulating material, the conductive member covers the first through hole and the second through hole, and a diameter of the first through hole is greater than the second through hole;
the second through hole is smaller than the first through hole; and
the first electrode tab is electrically connected to the conductive member, and the second electrode tab is electrically connected to the bottom portion or the sidewall of the first casing.

Assignees

• Ningde Amperex Technology Ltd

Inventors

• Guo Peipei
• Zhang Guowen

Classifications

• H01M2220/30

  Batteries in portable systems, e.g. mobile phone, laptop · CPC title

• H01M50/593 Primary

  Spacers; Insulating plates · CPC title

• H01M50/54

  Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges · CPC title

• H01M50/528

  Fixed electrical connections, i.e. not intended for disconnection · CPC title

• H01M50/109 Primary

  of button or coin shape · CPC title