Battery case

Patent metadata

Field	Value
Publication number	US-2024339721-A1
Application number	US-202418631083-A
Country	US
Kind code	A1
Filing date	Apr 10, 2024
Priority date	Apr 10, 2023
Publication date	Oct 10, 2024
Grant date	—

Abstract

A battery case includes a case body, a first baffle plate and a baffle cover. A gas exhaust channel is obliquely penetrated through a wall of the case body. The first baffle plate and the baffle cover are connected to the outer surface of the wall of the case body. The gas exhaust channel includes a gas inlet and a gas outlet. The first baffle plate is located on one side of the gas outlet away from the gas inlet. The baffle cover covers the gas outlet and the first baffle plate. There is a gas passage between the inner surface of the baffle cover and the first baffle plate. The baffle cover is provided with a gas exhaust opening. The gas inside the case body can be discharged out from the gas exhaust opening after flowing sequentially through the gas exhaust channel and the gas passage.

First claim

What is claimed is:

1 . A battery case comprising a case body, a first baffle plate and a baffle cover, wherein a gas exhaust channel is obliquely penetrated through a wall of the case body, and the first baffle plate and the baffle cover are both connected to an outer surface of the wall of the case body;
along a gas exhaust direction of the gas exhaust channel, the gas exhaust channel comprises a gas inlet located upstream and a gas outlet located downstream, and the first baffle plate is located on one side of the gas outlet away from the gas inlet; the baffle cover covers the gas outlet and the first baffle plate, and there is a gas passage between an inner surface of the baffle cover and the first baffle plate; the baffle cover is provided with a gas exhaust opening, and the gas exhaust opening is located on one side of the first baffle plate away from the gas inlet; gas inside the case body is able to be discharged out from the gas exhaust opening after flowing sequentially through the gas exhaust channel and the gas passage.

2 . The battery case as claimed in claim 1 , wherein the baffle cover comprises an outer cover plate and a side cover plate, the outer surface of the wall of the case body is spaced from the outer cover plate, the side cover plate is connected to the outer cover plate, and the outer cover plate is connected to the outer surface of the wall of the case body through the side cover plate;
one side of the first baffle plate away from the case body abuts against an inner surface of the outer cover plate.

3 . The battery case as claimed in claim 2 , wherein the battery case has a first direction, wherein the first direction is perpendicular to the gas exhaust direction of the gas exhaust channel, and the first direction is parallel to the outer surface of the wall of the case body on which the first baffle plate is located; along the first direction, the gas passage is formed between an inner surface of the side cover plate and the first baffle plate.

4 . The battery case as claimed in claim 1 , wherein the battery case has a first direction, wherein the first direction is perpendicular to the gas exhaust direction of the gas exhaust channel, and the first direction is parallel to the outer surface of the wall of the case body on which the first baffle plate is located; along the first direction, two opposite ends of the first baffle plate extend beyond two opposite sides of the gas outlet, respectively.

5 . The battery case as claimed in claim 4 , wherein along the first direction, the first baffle plate comprises a flat portion and two sloping portions connected to two opposite ends of the flat portion; the flat portion extends along the first direction, and an angle formed between the sloping portion and the flat portion is an obtuse angle, the obtuse angle is located on one side of the first baffle plate near the gas outlet.

6 . The battery case as claimed in claim 1 , wherein the battery case has a first direction, wherein the first direction is perpendicular to the gas exhaust direction of the gas exhaust channel, and the first direction is parallel to the outer surface of the wall of the case body on which the first baffle plate is located;
the case body is provided with multiple gas exhaust channel groups, the multiple gas exhaust channel groups are arranged and spaced apart along the first direction, each gas exhaust channel group comprises one first baffle plate and at least one gas exhaust channel; the first baffle plates of adjacent gas exhaust channel groups are spaced apart from each other.

7 . The battery case as claimed in claim 6 , wherein the number of the baffle cover is one or multiple, and each baffle cover correspondingly covers one gas exhaust channel group or multiple adjacent gas exhaust channel groups.

8 . The battery case as claimed in claim 6 , wherein the battery case has a second direction, wherein the second direction is perpendicular to the first direction, and the second direction is parallel to the outer surface of the wall of the case body on which the first baffle plate is located;
each gas exhaust channel group comprises multiple gas exhaust channels, and the multiple gas exhaust channels in each gas exhaust channel group are sequentially arranged along the second direction; along the gas exhaust direction of the gas exhaust channel, the first baffle plate is arranged at the most downstream gas exhaust channel of the gas exhaust channel group.

9 . The battery case as claimed in claim 8 , wherein the battery case further comprises a second baffle plate, and the second baffle plate is arranged between adjacent two gas exhaust channels of the gas exhaust channel group.

10 . The battery case as claimed in claim 1 , wherein the gas exhaust channel is provided on a side wall of the case body, and along the gas exhaust direction of the gas exhaust channel, and the gas exhaust channel is sloped downwards.

11 . The battery case as claimed in claim 2 , wherein the gas exhaust channel is provided on a side wall of the case body, and along the gas exhaust direction of the gas exhaust channel, and the gas exhaust channel is sloped downwards.

12 . The battery case as claimed in claim 3 , wherein the gas exhaust channel is provided on a side wall of the case body, and along the gas exhaust direction of the gas exhaust channel, and the gas exhaust channel is sloped downwards.

13 . The battery case as claimed in claim 4 , wherein the gas exhaust channel is provided on a side wall of the case body, and along the gas exhaust direction of the gas exhaust channel, and the gas exhaust channel is sloped downwards.

14 . The battery case as claimed in claim 5 , wherein the gas exhaust channel is provided on a side wall of the case body, and along the gas exhaust direction of the gas exhaust channel, and the gas exhaust channel is sloped downwards.

15 . The battery case as claimed in claim 6 , wherein the gas exhaust channel is provided on a side wall of the case body, and along the gas exhaust direction of the gas exhaust channel, and the gas exhaust channel is sloped downwards.

16 . The battery case as claimed in claim 7 , wherein the gas exhaust channel is provided on a side wall of the case body, and along the gas exhaust direction of the gas exhaust channel, and the gas exhaust channel is sloped downwards.

17 . The battery case as claimed in claim 8 , wherein the gas exhaust channel is provided on a side wall of the case body, and along the gas exhaust direction of the gas exhaust channel, and the gas exhaust channel is sloped downwards.

18 . The battery case as claimed in claim 9 , wherein the gas exhaust channel is provided on a side wall of the case body, and along the gas exhaust direction of the gas exhaust channel, and the gas exhaust channel is sloped downwards.

19 . The battery case as claimed in claim 10 , wherein the first baffle plate is located under the gas outlet of the gas exhaust channel, and the gas exhaust opening is located at the bottom of the baffle cover.

20 . The battery case as claimed in claim 10 , wherein a guiding tab is located inside the case body and obliquely connected to an inner surface of the side wall of the case body, and the gas exhaust channel is formed along the guiding tab.

Assignees

• Microvast Power Systems Co Ltd

Inventors

• Yang Wanyi
• Zhao Heng
• Li Bin
• Xiao Ningqiang
• Zhong Cheng

Classifications

• H01M2220/20

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

• H01M50/383

  Flame arresting or ignition-preventing means · CPC title

• H01M50/367 Primary

  Internal gas exhaust passages forming part of the battery cover or case; Double cover vent systems · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title