CN219643004U

CN219643004U - Protective sleeve of power battery and power battery

Info

Publication number: CN219643004U
Application number: CN202320405722.XU
Authority: CN
Inventors: 林法稳; 黄双浩; 吴思妙; 陈圣立
Original assignee: Jiangsu Zenio New Energy Battery Technologies Co Ltd
Current assignee: Jiangsu Zenio New Energy Battery Technologies Co Ltd
Priority date: 2023-03-07
Filing date: 2023-03-07
Publication date: 2023-09-05
Anticipated expiration: 2033-03-07

Abstract

The utility model belongs to the technical field of batteries, and particularly relates to a protective sleeve of a power battery. The utility model can be firmly sleeved at the top or bottom of the battery to contain the pressure relief area of the power battery, thereby realizing the sleeving and protection of the top or bottom of the battery and avoiding the pollution of electrolyte to the explosion-proof valve in the pressure relief area at the top or bottom of the battery. In addition, the utility model also provides a power battery.

Description

Protective sleeve of power battery and power battery

Technical Field

The utility model belongs to the technical field of batteries, and particularly relates to a protective sleeve of a power battery and the power battery.

Background

Nowadays, with the development of modern society and the enhancement of environmental awareness of people, more and more devices select lithium ion batteries as power sources, such as mobile phones, notebook computers, electric tools, electric automobiles and the like, which provides a wide space for the application and development of the lithium ion batteries.

In order to achieve the corresponding pressure relief function, the existing battery can be provided with an explosion-proof valve on the top cover of the battery, and in the use process of the battery, in order to further improve the safety of the battery module, the battery is inverted towards the ground at one side of the top cover of the battery, or the battery can be arranged upright, and the installation position of the explosion-proof valve can be adjusted to enable the explosion-proof valve to be arranged at the bottom of an aluminum shell of the battery. However, the above arrangement is at least the following: 1. when the battery core is normally pulled and assembled, whether the battery is inverted to enable the explosion-proof valve to face downwards or the battery is arranged at the bottom of the aluminum shell in a normal mode, the explosion-proof valve is possibly damaged due to foreign matters; 2. in the process of filling/supplementing liquid, an explosion-proof valve of the battery in an inverted state facing downwards to the ground or an explosion-proof valve of the bottom of the aluminum shell of the battery in a normal state contacts a workbench surface/clamp, and when the workbench surface/clamp has electrolyte, the electrolyte possibly contaminates the explosion-proof valve to influence the safety function of the explosion-proof valve. For this reason, a new solution is needed to solve the above problems.

Disclosure of Invention

One of the objects of the present utility model is: aiming at the defects of the prior art, the protective sleeve of the power battery is provided, can be firmly sleeved at the top or the bottom of the battery, realizes the sleeving and protection of the top or the bottom of the battery, and avoids the pollution of electrolyte to an explosion-proof valve in a pressure relief area at the top or the bottom of the battery.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a power battery's lag, the one side of lag has the opening, the opposite side of lag has sealed face, the lag be located the opening with the medial surface between the sealed face has a plurality of spacing portions, the lag is used for the suit at power battery's top or bottom in order to hold power battery's pressure release district.

Preferably, the protecting sleeve is provided with a plurality of inner side surfaces which are sequentially connected, and a plurality of limiting parts are respectively arranged on the two opposite inner side surfaces.

Preferably, the plurality of limiting parts are arranged on the inner side surface in an array manner, and the plurality of limiting parts can be arranged in an annular array manner, a rectangular array manner or a regular triangle array manner.

Preferably, the peripheral sides of the limiting parts are arc-shaped, so that damage of sharp corners to the battery is avoided.

Preferably, each of the limiting portions protrudes outwards from the inner side surface, the thickness of the protective sleeve along the protruding direction of the limiting portion is T1, and the protruding width of the limiting portion is h, so that the relation is satisfied: h is less than or equal to T1, because the top or the bottom of the battery is sleeved into the protective sleeve, the battery can generate downward force on the limiting part, and further a bending moment can be generated on the side wall of the protective sleeve, when h is less than or equal to T1, the thickness and the strength of the side wall of the protective sleeve can be ensured to be large enough, and the problems that the side wall of the protective sleeve is impacted by the moment to generate cracking, deformation and the like are effectively avoided.

Preferably, the number of the limiting parts may be 4 to 24.

Preferably, each face of the protective sleeve is connected through a round angle guide, and the protective sleeve is of a frame-shaped structure.

Preferably, the material of the protective sleeve is hard plastic, and the limiting part is a protruding rubber column.

Preferably, the shape of the raised rubber column is cylindrical, and the diameter of the raised rubber column can be 1.5 mm-10 mm.

Preferably, the protecting sleeve is internally provided with a partition plate for separating the space in the protecting sleeve so as to form a plurality of accommodating grooves formed by separating the partition plates, and the partition plate is connected to the inner side surface, wherein each accommodating groove can be used as a grid for accommodating the battery cell, so that the flow pulling efficiency can be effectively improved.

Preferably, the outer side wall of the protective sleeve is provided with an anti-slip structure, wherein the anti-slip structure can be an anti-slip convex point or an anti-slip groove.

The second object of the present utility model is: a power battery is provided, wherein the top or bottom of the power battery is sleeved with the protective sleeve.

The protective sleeve of the power battery has the advantages that one side of the protective sleeve is provided with the opening, the other side of the protective sleeve is provided with the sealing surface, the inner side surface of the protective sleeve, which is positioned between the opening and the sealing surface, is provided with the plurality of limiting parts, the protective sleeve is sleeved on the top or the bottom of the power battery to contain a pressure release area of the power battery, the plurality of limiting parts can clamp the side part of the power battery so as to prevent the protective sleeve from falling off, in actual production, the pressure release area on the top or the bottom of the power battery can be provided with the explosion-proof valve, when one side of the top of the battery, which is provided with the explosion-proof valve, is required to be inverted towards the ground or the right-placed battery, which is provided with the explosion-proof valve, is directly assembled on line, the protective sleeve is sleeved on the top or the bottom of the power battery in advance, and the explosion-proof valve on the top or the bottom of the battery can be prevented from being directly stressed to be damaged when normal flow is pulled; in the process of liquid injection/liquid supplement, the protective sleeve can prevent electrolyte from polluting the explosion-proof valve at the top or the bottom of the battery, and ensure that the safety function of the explosion-proof valve is not influenced, thereby effectively realizing the required protection.

Drawings

Features, advantages, and technical effects of exemplary embodiments of the present utility model will be described below with reference to the accompanying drawings.

Fig. 1 is a perspective view of embodiment 1 of the present utility model.

Fig. 2 is a cross-sectional view of embodiment 1 of the present utility model.

Wherein reference numerals are as follows:

1. a protective sleeve; 1a, opening; 1b, sealing surfaces; 1c, inner side; 1d, a limiting part; 1c', a first side; 1c ", second side; h. the protruding width of the limiting part; H. the height of the protective sleeve; t1, the thickness of the protective sleeve along the protruding direction of the limiting part; t2, thickness of the sealing surface; D. the diameter of the limiting part.

Detailed Description

Certain terms are used throughout the description and claims to refer to particular components. Those of skill in the art will appreciate that a hardware manufacturer may refer to the same component by different names. The description and claims do not take the form of an element differentiated by name, but rather by functionality. As used throughout the specification and claims, the word "comprise" is an open-ended term, and thus should be interpreted to mean "include, but not limited to. By "substantially" is meant that within an acceptable error range, a person skilled in the art can solve the technical problem within a certain error range, substantially achieving the technical effect.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "horizontal," "top," "bottom," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between 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.

The present utility model will be described in further detail below with reference to fig. 1 to 2 and the detailed embodiments, but is not limited thereto.

Example 1

Referring to fig. 1, one side of a protective cover 1 is provided with an opening 1a, the other side of the protective cover 1 is provided with a sealing surface 1b, an inner side surface 1c of the protective cover 1 between the opening 1a and the sealing surface 1b is provided with a plurality of limiting parts 1d, and the protective cover 1 is used for being sleeved at the top or the bottom of the power battery to contain a pressure relief area of the power battery.

In actual production, an explosion-proof valve can be arranged in a pressure release area at the top or bottom of the power battery, when one side of the top of the battery with the explosion-proof valve faces the ground to invert the battery or directly assemble a positive battery with the explosion-proof valve at the bottom on line, a protective sleeve 1 is sleeved at the top or bottom of the power battery with the explosion-proof valve in advance, and during normal flow pulling, the protective sleeve 1 can avoid damage caused by direct stress of the explosion-proof valve at the top or bottom of the battery; in the process of filling/supplementing liquid, the protective sleeve 1 can prevent electrolyte from polluting the explosion-proof valve at the top or the bottom of the battery, and ensure that the safety function of the explosion-proof valve is not influenced, thereby effectively realizing the required protection.

The protecting sleeve 1 is provided with a plurality of inner side surfaces 1c which are sequentially connected, and the sealing surface 1b is in sealing connection with the plurality of inner side surfaces 1c, so that when the protecting sleeve 1 is sleeved on the top or the bottom of the power battery, the top or the bottom of the power battery is effectively protected, and the situation that an explosion-proof valve at the top or the bottom of the power battery is polluted is prevented. And, two opposite medial surfaces 1c are provided with a plurality of spacing portions 1d respectively, and spacing portions 1d of the opposite both sides of lag 1 can play the effect of interlock card solid to the lateral part of power battery jointly like this, have prevented that lag 1 from appearing at the top or the bottom of power battery's phenomenon that drops.

Preferably, in each inner side surface 1c of the protective sleeve 1 with the limiting parts 1d, the number of the limiting parts 1d can be 2-12, wherein the plurality of limiting parts 1d can be arranged on the inner side surface 1c in an array manner, and the array manner can be annular array arrangement, rectangular array arrangement or regular triangle array arrangement, and the specific arrangement manner can be set as required.

Preferably, in each inner side surface 1c of the protective cover 1 having the limiting portion 1d, each limiting portion 1d protrudes outside the inner side surface 1c, the peripheral side of each limiting portion 1d is arc-shaped, and the safety of the arc-shaped peripheral side of the limiting portion 1d is high, so that damage to the side of the battery is avoided, and the battery is prevented from being scratched.

Preferably, each face of lag 1 is connected through the fillet direction, and the medial surface 1c of lag 1's quantity is four, and wherein, all is connected through the fillet direction between four medial surfaces 1c, also all is connected through the fillet direction between the sealed face 1b of lag 1 and four medial surfaces 1c, and sealed face 1b and four medial surfaces 1c enclose the recess of constituteing, and the edge all around of recess has the chamfer, can play the guide effect to the battery, when making things convenient for lag 1 to overlap the battery, also be difficult to lead to the aluminum hull of lag 1 fish tail battery. The protective cover 1 has a frame structure, and the protective cover 1 may have a rectangular structure with an opening 1a at one side, and in a groove of the frame structure, a plurality of limiting portions 1d may be provided on two opposite sides of the groove, or a plurality of limiting portions 1d may be provided on four sides of the groove.

Preferably, the material of the protecting cover 1 is hard plastic, and the material of the protecting cover 1 can be one of POM, PP, PPS, PC, PEEK.

Preferably, referring to fig. 2, the thickness of the protective sleeve 1 along the protruding direction of the limiting portion 1d is T1, and the protruding width of the limiting portion 1d is h, which satisfies the following relation: h is less than or equal to T1, because the top or the bottom of the battery is sleeved into the protective sleeve 1, the battery can generate downward force to the limiting part, and then a bending moment can be generated to the side wall of the protective sleeve 1, when h is less than or equal to T1, the thickness and the strength of the side wall of the protective sleeve 1 can be ensured to be large enough, and the problems of cracking, deformation and the like caused by impact of the moment on the side wall of the protective sleeve 1 are effectively avoided.

Preferably, the thickness of each side wall around the protective sleeve 1 is equal and is T1, wherein the value of T1 can be 1 mm-5 mm, and specifically can be 1 mm-2 mm, 2 mm-3 mm, 3 mm-4 mm and 4 mm-5 mm.

Preferably, the inner side of the protecting sleeve 1 is provided with a first side surface 1c 'and a second side surface 1c″ which are opposite, and the plurality of limiting parts 1d are respectively arranged on the first side surface 1c' and the second side surface 1c″, wherein the protruding width h of each limiting part 1d is not more than 1mm.

Preferably, in each inner side surface 1c of the protection sleeve 1 having the limiting portion 1d, the protruding width h of each limiting portion 1d is 0.1mm to 1mm, and the protruding width h of each limiting portion 1d may be specifically 0.1mm to 0.3mm, 0.3mm to 0.5mm, 0.5mm to 0.75mm, and 0.75mm to 1mm.

Preferably, the thickness of the sealing surface 1b of the protection sleeve 1 is T2, satisfying the relation: T1/T2 is more than or equal to 0.2 and less than or equal to 10, wherein the value of T2 is 0.5 mm-5 mm, and concretely can be 0.5 mm-1.5 mm, 1.5 mm-2.5 mm, 2.5 mm-4 mm and 4 mm-5 mm.

Preferably, the height H of the protective sleeve 1 is 5 mm-25 mm, and the height H of the protective sleeve 1 is the distance from the top of the inner side surface 1c to the bottom of the sealing surface 1 b.

Preferably, the spacing portion 1D is an integrated or embedded protruding rubber column, the material of which is the same as that of the protective sleeve 1, specifically, the shape of the protruding rubber column is cylindrical, the diameter of the spacing portion 1D is D, and the following relation is satisfied: d < H.

Preferably, the diameter D of the limit part 1D is 1.5mm to 10mm.

Other structures of this embodiment are the same as those of embodiment 1, and will not be described here again.

Example 2

Unlike embodiment 1, the inside of the protection cover 1 is provided with a partition plate for partitioning the space in the protection cover 1 to form a plurality of accommodating grooves partitioned by the partition plate, and the partition plate is connected to the inner side surface 1c of the protection cover 1, wherein each accommodating groove can be used as a lattice for accommodating the battery cell, thereby effectively improving the flow pulling efficiency.

Example 3

Unlike embodiment 1 or 2, the outer side wall of the protection cover 1 has an anti-slip structure, wherein the anti-slip structure may be an anti-slip bump or an anti-slip groove, and holding the anti-slip bump or the anti-slip groove may more firmly fit the protection cover 1 to the bottom of the battery when the bottom of the battery is sleeved.

And, spacing portion 1d can also set up to hemispherical structure or semi-ellipsoidal structure, and simultaneously, the material of lag 1 and spacing portion 1d can also adopt hard rubber, and shape and the material of lag 1 and spacing portion 1d can set up as required.

Other structures of this embodiment are the same as those of embodiment 1 or 2, and will not be described here again.

Example 4

A power battery, the top or bottom of which is sleeved with a protective sleeve 1 according to any one of embodiments 1-3, wherein the protective sleeve 1 is sleeved on the top or bottom of the power battery through an opening 1a, the top or bottom of the power battery with an explosion-proof valve is sealed through a sealing surface 1b and a plurality of inner sides 1c, and a limit part 1d of the protective sleeve 1 is partially contacted with the battery, under the action of slight tight fit of the limit part 1d, the falling off of the protective sleeve 1 is prevented, so that the explosion-proof valve on the top or bottom of the power battery is effectively protected, and the pollution of the top or bottom of the power battery is prevented.

Variations and modifications of the above embodiments will occur to those skilled in the art to which the utility model pertains from the foregoing disclosure and teachings. Therefore, the present utility model is not limited to the above-described embodiments, but is intended to be capable of modification, substitution or variation in light thereof, which will be apparent to those skilled in the art in light of the present teachings. In addition, although specific terms are used in the present specification, these terms are for convenience of description only and do not limit the present utility model in any way.

Claims

1. The utility model provides a power battery's lag which characterized in that:

one side of the protective sleeve is provided with an opening (1 a), and the other side of the protective sleeve is provided with a sealing surface (1 b);

the inner side surface (1 c) of the protective sleeve, which is positioned between the opening (1 a) and the sealing surface (1 b), is provided with a plurality of limiting parts (1 d), and the protective sleeve is used for being sleeved at the top or the bottom of the power battery so as to contain a pressure release area of the power battery.

2. A protective cover for a power cell as defined in claim 1, wherein: the protective sleeve is provided with a plurality of inner side surfaces (1 c) which are connected in sequence, and a plurality of limiting parts (1 d) are respectively arranged on the two opposite inner side surfaces (1 c).

3. A protective cover for a power cell as claimed in claim 1 or 2, characterized in that: the limiting parts (1 d) are arranged on the inner side surface (1 c) in an array mode.

4. A protective cover for a power cell as claimed in claim 1 or 2, characterized in that: the periphery of each limit part (1 d) is arc-shaped.

5. A protective cover for a power cell as claimed in claim 1 or 2, characterized in that: each limit part (1 d) protrudes outwards from the inner side surface (1 c), the thickness of the protective sleeve along the protruding direction of the limit part (1 d) is T1, the protruding width of the limit part (1 d) is h, and the relation is satisfied: h is less than or equal to T1.

6. A protective cover for a power cell as claimed in claim 1 or 2, characterized in that: each face of lag passes through the fillet direction and connects, the lag is frame-shaped structure.

7. A protective cover for a power cell as claimed in claim 1 or 2, characterized in that: the protective sleeve is made of hard plastic, and the limiting part (1 d) is a protruding rubber column.

8. A protective cover for a power cell as claimed in claim 1 or 2, characterized in that: the protective sleeve is internally provided with a baffle plate for separating the space in the protective sleeve so as to form a plurality of accommodating grooves separated by the baffle plate, and the baffle plate is connected with the inner side surface (1 c).

9. A protective cover for a power cell as claimed in claim 1 or 2, characterized in that: the outer side wall of the protective sleeve is provided with an anti-slip structure.

10. A power cell, characterized in that: the top or bottom of the power battery is sleeved with the protective sleeve according to any one of claims 1-9.