CN-224232739-U - Single cell

CN224232739UCN 224232739 UCN224232739 UCN 224232739UCN-224232739-U

Abstract

The utility model discloses a single battery cell, which comprises a shell, wherein a first groove is formed in one side of the top end of the shell, an explosion-proof valve is arranged on the first groove, a second groove is formed in one side, opposite to the first groove, of the top end of the shell, a liquid injection hole is formed in the second groove, a third groove is formed in the middle of the top end of the shell, and a pole is arranged in the third groove. Through designing a electric core casing, electric core casing is integrated into one piece, and electric core casing both ends are equipped with two recesses, have placed notes liquid hole and explosion-proof valve respectively, and electric core casing middle part is equipped with the recess, places two utmost point posts, can effectively reduce the influence of electrolyte to the utmost point post when thermal runaway, and when the leakage phenomenon appeared in the explosion-proof valve was burst annotating the liquid hole, the explosion-proof valve was difficult to corrode the utmost point post with the electrolyte of annotating the infiltration out in the liquid hole, and the security is strong.

Inventors

HUANG XIAOWEI
YANG JIAN
HE JINGYANG
KUANG ZHUOJUN
ZHONG YUHAO

Assignees

江西赣锋锂电科技股份有限公司

Dates

Publication Date: 20260512
Application Date: 20241129

Claims (6)

1. The utility model provides a monomer electricity core, includes the casing, its characterized in that, casing top one side is equipped with first recess, be equipped with explosion-proof valve on the first recess, be equipped with the second recess on the opposite one side of casing top and first recess, be equipped with the notes liquid hole on the second recess, casing top intermediate position is equipped with the third recess, be equipped with the utmost point post in the third recess.
2. The single cell of claim 1, wherein the first recess and the second recess are symmetrically disposed about the third recess.
3. The single cell of claim 1, wherein a first bump is disposed between the first recess and the third recess, and a second bump is disposed between the second recess and the third recess.
4. A single cell as claimed in claim 3 wherein said first and second bump top surfaces are at the same level.
5. The single cell defined in claim 4 wherein the terminal top end is lower than the top end of the first and second bumps.
6. The cell of claim 1, wherein the post height is less than 1/2 of the third recess depth.

Description

Single cell Technical Field The utility model relates to the field of lithium ion batteries, in particular to a single battery cell. Background In electric vehicles, energy storage systems and other electronic devices, a battery is used as a core energy storage unit, and is usually used as a large module, and a single battery cell is one of the keys for forming the battery module. Although a variety of individual cells currently exist, there are still some significant drawbacks and shortcomings. The current explosion-proof valve of electric core and annotate liquid hole and set up between the utmost point post on the lamina tecti usually, when electric core thermal runaway, the explosion-proof valve can be broken, can appear leaking the liquid phenomenon in annotating the liquid hole simultaneously, and the electrolyte that oozes out in explosion-proof valve and the notes liquid hole can corrode the utmost point post, aggravate the short-circuit phenomenon, and the security is poor. For this reason, we propose a single cell to solve the above-mentioned problems. Disclosure of utility model The utility model aims to solve the defects in the prior art and provides a single cell. In order to achieve the above purpose, the present utility model adopts the following technical scheme: The utility model provides a monomer electricity core, includes the casing, casing top one side is equipped with first recess, be equipped with explosion-proof valve on the first recess, be equipped with the second recess in the opposite one side of casing top and first recess, be equipped with the notes liquid hole on the second recess, casing top intermediate position is equipped with the third recess, be equipped with the utmost point post in the third recess. Further preferably, the first groove and the second groove are symmetrically arranged with the third groove as a center. Further preferably, a first bump is arranged between the first groove and the third groove, and a second bump is arranged between the second groove and the third groove. Further preferably, the first bump top end surface and the second bump top end surface are located on the same horizontal plane. Further preferably, the top end surface of the pole is lower than the top end surfaces of the first bump and the second bump. Further preferably, the pole height is less than 1/2 of the depth of the third recess. Compared with the prior art, the utility model has the beneficial effects that: Through designing a electric core casing, electric core casing is integrated into one piece, and electric core casing both ends are equipped with two recesses, have placed notes liquid hole and explosion-proof valve respectively, and electric core casing middle part is equipped with the recess, places two utmost point posts, can effectively reduce the influence of electrolyte to the utmost point post when thermal runaway, and when the leakage phenomenon appeared in the explosion-proof valve was burst annotating the liquid hole, the explosion-proof valve was difficult to corrode the utmost point post with the electrolyte of annotating the infiltration out in the liquid hole, and the security is strong. Drawings Fig. 1 is an overall structure diagram of a single cell according to the present utility model. In the figure, 1, a shell, 2, a first groove, 3, an explosion-proof valve, 4, a second groove, 5, a liquid injection hole, 6, a first bump, 7, a second bump, 8, a third groove and 9, and a pole. Detailed Description The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. Referring to fig. 1, a single cell includes a housing 1, a first groove 2 is provided on one side of the top end of the housing 1, and the first groove 2 The explosion-proof valve 3 is arranged on the battery cell, when the inside of the battery cell is out of control, a large amount of gas can be generated, the pressure inside the battery cell can be increased by the gas, and the gas can break through the explosion-proof valve 3 at the moment, so that explosion can be prevented. One side opposite to the first groove 2 on the top end of the shell 1 is provided with a second groove 4, the second groove 4 is provided with a liquid injection hole 5, after the installation of the winding core inside the shell 1 is completed, electrolyte is injected into the shell 1 through the liquid injection hole 5 to form a battery core, the liquid injection hole 5 can be sealed by using a sealing nail, the middle position of the top end of the shell 1 is provided with a third groove 8, and a pole 9 is arranged in the third groove 8. Through designing a electric core casing 1, electric core casing 1 is integrated into one piece, and electric core casing 1 both ends are equipped with two recesses