Electrochemical apparatus and electronic apparatus

Patent metadata

Field	Value
Publication number	US-2024243392-A1
Application number	US-202418622158-A
Country	US
Kind code	A1
Filing date	Mar 29, 2024
Priority date	Dec 5, 2022
Publication date	Jul 18, 2024
Grant date	—

Abstract

An electrochemical apparatus includes a housing, an electrode assembly, a first tab, and a pole assembly. The housing includes a main body and a first protruding portion, the main body is provided with a first cavity, the first protruding portion is provided with a second cavity and a first through hole, the first through hole and the first cavity both communicate with the second cavity, the pole assembly is disposed in the first through hole, one end of the first tab is connected to the electrode assembly, and another end of the first tab extends into the second cavity and is connected to the pole assembly. The main body includes a first top wall, and the first protruding portion includes a second top wall, where the first top wall protrudes from the second top wall, and the first through hole is provided in the second top wall.

First claim

What is claimed is:

1 . An electrochemical apparatus, comprising: a housing, an electrode assembly, a first tab, and a pole assembly; wherein the housing comprises a main body and a first protruding portion, the main body is provided with a first cavity, the first protruding portion is provided with a second cavity and a first through hole, the first through hole and the first cavity both communicate with the second cavity, the pole assembly is disposed in the first through hole, the pole assembly is insulated from the housing, the electrode assembly is accommodated in the first cavity, one end of the first tab is connected to the electrode assembly, and another end of the first tab extends into the second cavity and is connected to the pole assembly; wherein
the main body comprises a first top wall, and the first protruding portion comprises a second top wall, wherein the first top wall protrudes from the second top wall, and the first through hole is provided in the second top wall.

2 . The electrochemical apparatus according to claim 1 , wherein the first protruding portion satisfies at least one of the following conditions:
(1) a distance between two ends of the first protruding portion in a thickness direction of the main body is 1.00 mm to 3.00 mm; (2) a distance between two ends of the first protruding portion in a width direction of the main body is 3 mm to 25 mm; or (3) a distance between two ends of the first protruding portion in a length direction of the main body is 3 mm to 6 mm.

3 . The electrochemical apparatus according to claim 1 , wherein the main body further comprises a first bottom wall, and along a thickness direction of the main body, the first bottom wall is disposed opposite to the first top wall; and
the first protruding portion further comprises a second bottom wall, and along the thickness direction of the main body, the second bottom wall is disposed opposite to the second top wall, and the second bottom wall is flush with the first bottom wall.

4 . The electrochemical apparatus according to claim 1 , wherein a first side wall of the housing comprises a first zone and a second zone, the first side wall extends along a length direction of the main body to form the first protruding portion, and the first protruding portion and the second zone form an accommodating space; and
the electrochemical apparatus further comprises a circuit board, wherein the circuit board is fixed in the accommodating space, and the circuit board is provided with a first electrical connection portion, a side of the first electrical connection portion extends out of the circuit board, wherein the first electrical connection portion is electrically connected to the pole assembly, and the first electrical connection portion is arranged between the first top wall and the second top wall.

5 . The electrochemical apparatus according to claim 4 , wherein the circuit board is provided with a second electrical connection portion electrically connected to the housing; and
the electrochemical apparatus further comprises a second tab, wherein one end of the second tab is electrically connected to the electrode assembly, and another end of the second tab is electrically connected to the housing.

6 . The electrochemical apparatus according to claim 5 , wherein the second electrical connection portion is electrically connected to an outer surface of the first protruding portion; and a connection point between the first protruding portion and the second electrical connection portion, and the first through hole are located on a same side of the first protruding portion.

7 . The electrochemical apparatus according to claim 4 , wherein a second protruding portion extends along the length direction of the main body from the second zone; along a width direction of the main body, the first protruding portion and the second protruding portion are located at two ends of the first side wall; and the circuit board is located between the first protruding portion and the second protruding portion.

8 . The electrochemical apparatus according to claim 4 , wherein the pole assembly comprises a pole, a connecting member, and an adhesive layer sandwiched between the pole and the connecting member; wherein the connecting member is fixed to the first protruding portion, the pole is provided with a first end portion and a connecting portion, wherein the first end portion is located outside the first protruding portion, the first end portion is electrically connected to the circuit board; one end of the connecting portion is connected to the first end portion; another end of the connecting portion sequentially runs through the adhesive layer, the connecting member, and the first through hole to connect to another end of the first tab; and a gap is provided between an outer periphery of the connecting portion and a wall surface of the first through hole.

9 . The electrochemical apparatus according to claim 4 , wherein the pole assembly comprises a pole, a first insulation gasket, and a second insulation gasket; wherein the pole is provided with a first end portion, a connecting portion, and a second end portion; the first end portion is located outside the first protruding portion and is electrically connected to the circuit board, the second end portion is located inside the second cavity and is electrically connected to the electrode assembly, and the connecting portion runs through the first through hole and is connected to the first end portion and the second end portion; the first insulation gasket is sandwiched between the first end portion and the first protruding portion, and the second insulation gasket is sandwiched between the second end portion and the second protruding portion, wherein the first insulation gasket insulates the first protruding portion from the connecting portion.

10 . The electrochemical apparatus according to claim 9 , wherein the pole assembly further comprises a metal gasket, wherein the metal gasket is sandwiched between the first end portion and the first insulation gasket.

11 . The electrochemical apparatus according to claim 1 , wherein the electrochemical apparatus further comprises a first insulation member and a second insulation member, wherein the first insulation member and the second insulation member are both provided on an inner wall surface of the first protruding portion; and
along a thickness direction of the electrochemical apparatus, the first tab is located between the second insulation member and the first insulation member.

12 . The electrochemical apparatus according to claim 1 , wherein the first protruding portion is further provided with a second through hole, and the second through hole communicates with the second cavity; and
the electrochemical apparatus further comprises an injection plug, and the injection plug is provided in the second through hole.

13 . The electrochemical apparatus according to claim 2 , wherein the first protruding portion is further provided with a second through hole, and the second through hole communicates with the second cavity; and
the electrochemical apparatus further comprises an injection plug, and the injection plug is provided in the second through hole.

14 . The electrochemical apparatus according to claim 3 , wherein the first protruding portion is further provided with a second through hole, and the second through hole communicates with the second cavity; and
the electrochemical apparatus further comprises an injection plug, and the injection plug is provided in the second through hole.

15 . The electrochemical apparatus accor

Assignees

• Ningde Amperex Technology Ltd

Inventors

• Yang Jianhui
• Liu Ning
• Zhang Guowen

Classifications

• H01M50/536

  characterised by the method of fixing the leads to the electrodes, e.g. by welding · CPC title

• H01M50/528

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

• H01M50/533

  characterised by the shape of the leads or tabs · CPC title

• H01M50/553

  Terminals adapted for prismatic, pouch or rectangular cells · CPC title

• H01M50/55 Primary

  on the same side of the cell · CPC title