CN211265535U

CN211265535U - Battery weeping water conservancy diversion structure

Info

Publication number: CN211265535U
Application number: CN202020124710.6U
Authority: CN
Inventors: 朱国荣; 翁夏清; 连宇成; 康健强; 王菁; 熊松; 邓翔天; 庞牧野
Original assignee: Wuhan University of Technology WUT
Current assignee: Wuhan University of Technology WUT
Priority date: 2020-01-19
Filing date: 2020-01-19
Publication date: 2020-08-14
Anticipated expiration: 2030-01-19

Abstract

The utility model discloses a battery weeping water conservancy diversion structure, include: the lithium battery body, battery weeping water conservancy diversion structure still include the fender lid, the fender lid is tile shape, and the concave cambered surface of fender lid is relative the lithium battery safety valve arranges, the fender lid cover in the top of lithium battery safety valve, and the fender lid set up in positive post with between the negative pole post, the fender lid is close to one side of positive post with lithium battery body's up end sealing connection, the fender lid is close to one side of negative pole post with lithium battery body's up end sealing connection, the both ends of fender lid extend respectively to lithium battery body's up end width direction's both ends, and the both ends opening of fender lid. The utility model provides an among the battery weeping water conservancy diversion structure the fender lid is used for blockking that lithium cell relief valve exhaust liquid adheres to anodal post, negative pole post on to avoided leaking liquid and aroused the short circuit between lithium cell anodal post, the negative pole post.

Description

Battery weeping water conservancy diversion structure

Technical Field

The utility model relates to a lithium cell safety technical field, concretely relates to battery weeping water conservancy diversion structure.

Background

The lithium ion battery module and the battery pack are sealing structures, and thermal simulation optimization usually depends on a shell and a frame for supporting a battery to dissipate heat, so that the structure is very compact; basically, the battery module or the battery pack requires a waterproof and dustproof grade of IP55 or higher, and is sealed well at ordinary times and is not suitable for opening inspection.

If there are product safety defects in the battery, such as battery leakage, inflation damage, and electrochemical corrosion caused by leaked electrolyte, heat generation is easily caused in the sealed battery module or battery pack, and even the lithium battery is ignited and exploded.

The utility model provides a current lithium cell, the up end of lithium cell sets up positive post, lithium cell relief valve, negative pole post along its length direction interval in proper order, and the lithium cell relief valve is the general safety part of lithium cell, and when lithium cell internal pressure was too big, its top lithium cell relief valve can open exhaust/liquid decompression, avoids the explosion, but also can lead to exhaust weeping to cause the short circuit between the positive negative pole post of lithium cell simultaneously.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned technique not enough, provide a battery weeping water conservancy diversion structure, avoid leaking liquid and arouse the short circuit between lithium cell positive post, the negative pole post.

In order to achieve the above technical purpose, the technical scheme of the utility model provides a battery weeping water conservancy diversion structure, include: the lithium battery comprises a lithium battery body, the upper end face of the lithium battery body is provided with a positive pole, a lithium battery safety valve and a negative pole at intervals in sequence along the length direction of the lithium battery body, and the lithium battery leakage flow guide structure is characterized in that the battery leakage flow guide structure further comprises a blocking cover, the blocking cover is tile-shaped, the concave arc surface of the blocking cover is opposite to the arrangement of the lithium battery safety valve, the blocking cover covers the lithium battery safety valve, the blocking cover is arranged between the positive pole and the negative pole, is close to one side of the positive pole and is in sealing connection with the upper end face of the lithium battery body, is close to one side of the negative pole and is in sealing connection with the upper end face of the lithium battery body, and the two ends of the blocking cover extend to the two ends of the upper end face of the lithium battery body in the width direction respectively.

Compared with the prior art, the beneficial effects of the utility model include: the blocking cover in the battery leakage liquid guide structure is used for blocking liquid discharged by the lithium battery safety valve from adhering to the positive pole column and the negative pole column, so that short circuit between the positive pole column and the negative pole column of a lithium battery caused by leakage liquid is avoided, and gas and liquid discharged from the lithium battery safety valve can be discharged from openings at two ends of the blocking cover.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of a battery leakage flow guide structure provided by the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, the present embodiment provides a battery leakage guiding structure, including: lithium cell body 1, lithium cell body 1's up end has set gradually the interval along its length direction has positive post 1a, lithium cell relief valve 1b, negative pole post 1c, and lithium cell relief valve 1b is the general safety part of lithium cell, and when lithium cell internal pressure was too big, its top lithium cell relief valve 1b can open exhaust/liquid decompression, avoids the explosion, but also can lead to exhaust weeping to cause the short circuit between the positive and negative utmost point post of lithium cell simultaneously.

The battery leakage flow guide structure further comprises a blocking cover 2, the blocking cover 2 is tile-shaped, a concave arc surface of the blocking cover 2 is opposite to the lithium battery safety valve 1b, the blocking cover 2 covers the lithium battery safety valve 1b, the blocking cover 2 is arranged between the positive pole 1a and the negative pole 1c, one side, close to the positive pole 1a, of the blocking cover 2 is in sealing connection with the upper end face of the lithium battery body 1, one side, close to the negative pole 1c, of the blocking cover 2 is in sealing connection with the upper end face of the lithium battery body 1, two ends of the blocking cover 2 extend to two ends of the upper end face of the lithium battery body 1 in the width direction, and two ends of the blocking cover 2 are open.

The blocking cover 2 in the battery leakage liquid guiding structure is used for blocking liquid discharged by the lithium battery safety valve 1b from adhering to the positive pole post 1a and the negative pole post 1c, so that short circuit between the positive pole post 1a and the negative pole post 1c of a lithium battery caused by leakage liquid is avoided, and gas and liquid discharged from the lithium battery safety valve 1b can be discharged from openings at two ends of the blocking cover 2.

This embodiment still provides an optimal technical scheme, the up end of lithium cell body 1, and be located the region at fender lid 2 below both ends is the inclined plane 2a that the slope was arranged in the horizontal plane, set up vertical guiding gutter 1d of arranging on the lateral wall of the vertical direction of lithium cell body 1, the upper end of guiding gutter 1d with the minimum intercommunication of inclined plane 2a, the lower extreme of guiding gutter 1d is provided with gasket 3 that is used for adsorbing liquid, and wool felt can be chooseed for use to gasket 3 in this embodiment, and wool felt can directly adsorb the liquid that gets off from guiding gutter 1d drainage, the coating of 1 surface of lithium cell body has three proofings lacquer, avoids lithium cell safety valve 1b spun liquid to cause the corruption of lithium cell body 1.

The working principle is as follows: the blocking cover 2 in the battery leakage flow guide structure is used for blocking liquid discharged by a lithium battery safety valve 1b from adhering to a positive pole column 1a and a negative pole column 1c, so that short circuit between the positive pole column 1a and the negative pole column 1c of a lithium battery caused by liquid leakage is avoided, discharged gas and liquid from the lithium battery safety valve 1b can be discharged from openings at two ends of the blocking cover 2, and the liquid is downwards drained to a gasket 3 (made of wool felt or sponge block containing fire retardant) through a flow guide groove 1d and is adsorbed by the gasket 3.

The above description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A battery weeping water conservancy diversion structure, includes: the lithium battery comprises a lithium battery body, the upper end face of the lithium battery body is provided with a positive pole, a lithium battery safety valve and a negative pole at intervals in sequence along the length direction of the lithium battery body, and the lithium battery leakage flow guide structure is characterized in that the battery leakage flow guide structure further comprises a blocking cover, the blocking cover is tile-shaped, the concave arc surface of the blocking cover is opposite to the arrangement of the lithium battery safety valve, the blocking cover covers the lithium battery safety valve, the blocking cover is arranged between the positive pole and the negative pole, is close to one side of the positive pole and is in sealing connection with the upper end face of the lithium battery body, is close to one side of the negative pole and is in sealing connection with the upper end face of the lithium battery body, and the two ends of the blocking cover extend to the two ends of the upper end face of the lithium battery body in the width direction respectively.

2. The battery leakage flow guide structure according to claim 1, wherein the upper end surface of the lithium battery body and the areas at the two ends below the blocking cover are inclined planes arranged obliquely to the horizontal plane.

3. The battery leakage flow guide structure according to claim 2, wherein a vertically arranged flow guide groove is formed in an outer side wall of the lithium battery body in the vertical direction, and an upper end of the flow guide groove is communicated with the lowest point of the inclined plane.

4. The battery leakage flow guide structure according to claim 3, wherein a gasket for adsorbing liquid is disposed at the lower end of the flow guide groove.

5. The battery leakage flow guide structure according to claim 1, wherein the outer surface of the lithium battery body is coated with a three-proofing paint.