CN220585336U

CN220585336U - Novel secondary battery top cap subassembly and secondary battery

Info

Publication number: CN220585336U
Application number: CN202321693872.1U
Authority: CN
Inventors: 王雷; 方仁杰; 宋义根; 邓平华
Original assignee: Jiangxi Baisili New Energy Technology Co ltd
Current assignee: Jiangxi Baisili New Energy Technology Co ltd
Priority date: 2023-06-30
Filing date: 2023-06-30
Publication date: 2024-03-12
Anticipated expiration: 2033-06-30

Abstract

The utility model discloses a novel secondary battery top cover assembly and a secondary battery, wherein the novel secondary battery top cover assembly comprises lower plastic; the lower plastic is provided with a liquid injection hole and a baffle plate, and the baffle plate is arranged at the lower end of the liquid injection hole. According to the utility model, the baffle is arranged, so that the electrolyte which is flushed out of the liquid injection hole can be effectively blocked, the speed and pressure of the electrolyte are reduced, and the electrolyte is effectively prevented from directly flushing onto the welding tab to impact and fracture the welding tab.

Description

Novel secondary battery top cap subassembly and secondary battery

Technical Field

The utility model relates to the technical field of batteries, in particular to a novel secondary battery top cover assembly and a secondary battery.

Background

In modern society, more and more electric tools and new energy vehicles are driven by power sources, and batteries are widely used in the electric tools and the new energy vehicles due to their excellent characteristics such as high capacity and high safety. These batteries should have good safety in addition to high capacity to meet the standards of use and to meet the needs of people.

The power cell generally includes a battery cell, a battery housing containing the battery cell, a top cap assembly sealingly mounted to the battery housing, and an electrolyte poured into the battery housing. The top cover assembly is generally composed of a top cover plate, a positive electrode column, a negative electrode column and the like, a liquid injection hole is formed in the top cover plate in order to facilitate electrolyte injection into the battery shell, and the welding electrode lug is likely to be impacted and broken by the excessive electrolyte pressure in the liquid injection process.

Disclosure of Invention

The utility model aims to solve the problems that: the utility model provides a novel secondary cell top cap subassembly and secondary cell through setting up the baffle, can effectually block the electrolyte that punches out in the notes liquid hole, reduces the speed and the pressure of electrolyte, effectively prevents that the electrolyte from directly punching to the welding tab on with the welding tab impact fracture.

The technical scheme provided by the utility model for solving the problems is as follows: a novel secondary battery top cover assembly comprises a lower plastic; the lower plastic is provided with a liquid injection hole and a baffle plate, and the baffle plate is arranged at the lower end of the liquid injection hole.

Preferably, the shape of the baffle is matched with the shape of the liquid injection hole.

Preferably, the area of the baffle is equal to or larger than the area of the liquid injection hole.

Preferably, a top cover sheet and a pole assembly are also included.

Preferably, the pole assembly comprises a pole and an insulating piece, wherein the top cover piece and the lower plastic are respectively provided with a first mounting hole for the pole to pass through, the pole sequentially passes through the lower plastic and the top cover piece from bottom to top, and the insulating piece is clamped at the upper end of the pole.

Preferably, the pole assembly further comprises a sealing ring, and the sealing ring is sleeved on the pole and located at the lower end of the lower plastic.

Preferably, the top cover plate is provided with a second mounting hole, and an anti-explosion valve plate is arranged in the second mounting hole.

Preferably, the lower plastic is provided with a ventilation window, and one end of the baffle is connected with the ventilation window.

Preferably, the baffle plate and the ventilation window are integrally formed.

The utility model also discloses a secondary battery, which comprises the novel secondary battery top cover assembly.

Compared with the prior art, the utility model has the advantages that: according to the utility model, the baffle is arranged, so that the electrolyte which is flushed out of the liquid injection hole can be effectively blocked, the speed and pressure of the electrolyte are reduced, and the electrolyte is effectively prevented from directly flushing onto the welding tab to impact and fracture the welding tab.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model.

FIG. 1 is a schematic diagram of an explosive structure of the present utility model;

FIG. 2 is a schematic view of the lower plastic of the present utility model.

The drawings are marked: 1. the device comprises an insulating part, 2, a top cover plate, 3, a first mounting hole, 4, lower plastic, 5, a sealing ring, 6, a pole, 7, an anti-explosion valve plate, 8, a liquid injection hole, 9, a ventilation window, 10, a baffle plate, 11 and a second mounting hole.

Detailed Description

The following detailed description of embodiments of the present utility model will be given with reference to the accompanying drawings and examples, by which the implementation process of how the present utility model can be applied to solve the technical problems and achieve the technical effects can be fully understood and implemented.

In the description of the present utility model, it should be noted that, for the azimuth words such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present utility model and simplifying the description, and it is not to be construed as limiting the specific scope of protection of the present utility model that the device or element referred to must have a specific azimuth configuration and operation.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first", "a second" or "a second" feature may explicitly or implicitly include one or more such feature, and in the description of the utility model, the meaning of "a number" is two or more, unless otherwise specifically defined.

In the present utility model, unless explicitly stated and limited otherwise, the terms "assembled," "connected," and "connected" are to be construed broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; can be directly connected or connected through an intermediate medium, and can be communicated with the inside of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

It should be understood that the terms "comprises" and "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It is also to be understood that the terminology used in the description of the embodiments of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of embodiments of the utility model. As used in the specification of the embodiments of the utility model and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

Example 1

A novel secondary battery top cover assembly, as shown in fig. 1 and 2, comprises a lower plastic 4; the lower plastic 4 is provided with a liquid injection hole 8 and a baffle plate 10, and the baffle plate 10 is arranged at the lower end of the liquid injection hole 8.

In the scheme, by arranging the baffle, electrolyte which is flushed out of the liquid injection hole can be effectively blocked, the speed and pressure of the electrolyte are reduced, and the electrolyte is effectively prevented from directly flushing the welding tab to impact and fracture the welding tab.

In this embodiment, in order to ensure that the electrolyte can be fully blocked by the baffle plate when the electrolyte is injected from the injection hole, the shape of the baffle plate 10 is adapted to the shape of the injection hole 8; further, the area of the baffle 10 is equal to or larger than the area of the liquid injection hole 8.

In this embodiment, the top cover sheet 2 and the pole assembly are also included; specifically, the post subassembly includes post 6 and last insulating part 1, all be equipped with on top cap piece 2 and the lower plastic 4 and be used for supplying the mounting hole one 3 that post 6 passed, post 6 passes lower plastic 4 and top cap piece 2 from bottom to top in proper order, insulating part 1 joint is in the upper end of post 6.

Wherein, in order to promote the sealing performance of utmost point post subassembly, utmost point post subassembly still includes sealing washer 5, sealing washer 5 cover is established on utmost point post 6 and is located plastic 4 lower extreme down, seals the junction of utmost point post and lower plastic through the sealing washer is effectual.

In this embodiment, the top cover sheet 2 is provided with a second mounting hole 11, and the second mounting hole 11 is internally provided with an anti-explosion valve sheet 7.

Wherein, the concrete mounted position of baffle does: a ventilation window 9 matched with an explosion-proof valve is arranged on the lower plastic 4, and one end of the baffle 10 is connected with the ventilation window 9; more specifically, for convenience in processing and improving the stability of the connection between the baffle and the ventilation window 9, the baffle 10 and the ventilation window 9 are integrally formed.

Example 2

The present embodiment discloses a secondary battery, including a novel secondary battery top cap assembly as in embodiment 1, and it should be noted that, in this embodiment, the remaining components of the secondary battery belong to the structures in the prior art, and those skilled in the art can select and use the secondary battery according to the structures in the prior art, so that the description is omitted.

The foregoing is illustrative of the preferred embodiments of the present utility model and is not to be construed as limiting the claims. The present utility model is not limited to the above embodiments, and the specific structure thereof is allowed to vary. All changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims

1. A novel secondary battery top cover assembly, which comprises a lower plastic (4); the method is characterized in that: the lower plastic (4) is provided with a liquid injection hole (8) and a baffle (10), and the baffle (10) is arranged at the lower end of the liquid injection hole (8); the device also comprises a top cover plate (2) and a pole assembly; the pole assembly comprises a pole (6) and an upper insulating part (1), wherein the top cover piece (2) and the lower plastic (4) are respectively provided with a first mounting hole (3) for the pole (6) to pass through, the pole (6) sequentially passes through the lower plastic (4) and the top cover piece (2) from bottom to top, and the insulating part (1) is clamped at the upper end of the pole (6).

2. The novel secondary battery top cap assembly according to claim 1, wherein: the shape of the baffle (10) is matched with the shape of the liquid injection hole (8).

3. The novel secondary battery top cap assembly according to claim 2, wherein: the area of the baffle plate (10) is equal to or larger than the area of the liquid injection hole (8).

4. The novel secondary battery top cap assembly according to claim 1, wherein: the pole assembly further comprises a sealing ring (5), and the sealing ring (5) is sleeved on the pole (6) and located at the lower end of the lower plastic (4).

5. The novel secondary battery top cap assembly according to claim 1, wherein: the top cover sheet (2) is provided with a second mounting hole (11), and an anti-explosion valve sheet (7) is arranged in the second mounting hole (11).

6. The novel secondary battery top cap assembly according to claim 1, wherein: the lower plastic (4) is provided with a ventilation window (9), and one end of the baffle (10) is connected with the ventilation window (9).

7. The novel secondary battery top cap assembly according to claim 6, wherein: the baffle (10) and the ventilation window (9) are integrally formed.

8. A secondary battery characterized in that: a novel secondary battery top cap assembly comprising the above-described structure according to any one of claims 1 to 7.