CN215771348U

CN215771348U - Lithium battery module shell

Info

Publication number: CN215771348U
Application number: CN202121909554.5U
Authority: CN
Inventors: 董怀广; 吴国庆
Original assignee: Fujian Yunzhong Power Technology Co ltd
Current assignee: Fujian Yunzhong Power Technology Co ltd
Priority date: 2021-08-13
Filing date: 2021-08-13
Publication date: 2022-02-08
Anticipated expiration: 2031-08-13

Abstract

The utility model relates to a lithium battery module shell, which comprises: the upper end and the lower end of the shell are in an open shape, the upper end and the lower end of the shell are respectively connected with a front cover assembly and a rear cover assembly, and the structure of the rear cover assembly is symmetrical to that of the front cover assembly; the front cover assembly comprises a front cover body matched with the shell, the inner side of the front cover body extends inwards to form a connecting boss, and a rubber ring is sleeved on the connecting boss. According to the battery cell module, the tensile strength of the front cover assembly and the rear cover assembly is enhanced by the side screws, the front cover assembly and the rear cover assembly are prevented from being ejected out by the battery cell module, and the rubber rings are matched more tightly; the front cover component and the rear cover component are provided with the radiating fins and the SR head of the wiring harness rubber, so that the installation and the use are more flexible and diversified.

Description

Lithium battery module shell

Technical Field

The utility model relates to the field of storage battery energy, in particular to a lithium battery module shell.

Background

Along with new energy equipment such as electric motor car, logistics robot, electric ship's development, the use of lithium cell is more and more extensive, and electric core capacity, output and battery load are bigger and bigger, and electric core quantity is more and more, consequently, to how the optimal design battery module shell, intensity is improved, and control cost has also proposed higher requirement.

In the existing battery design, a plastic shell scheme and an aluminum shell scheme are common:

wherein: the plastic shell scheme, the plastic shell thickness is taken into consideration of the injection molding process, the thickness is controlled to be about 3mm, the upper cover and the lower cover are designed with waterproof glue grooves, glue is applied for water proofing, the technical maturity of the scheme is realized, but the following defects are also realized:

1. the wall thickness of the plastic shell needs to be about 3mm, and the overall impact strength of the shell is weak;

2. the side wall of the plastic shell is easy to bend and the like, and meanwhile, the sealing and waterproof failures are caused by poor deformation;

3. under the damage conditions of puncture and the like of the battery cell, the pressure relief and eruption of the positive electrode of the battery cell, the high temperature resistance of the plastic shell is insufficient, and the injection of the battery cell cannot be isolated;

4. the plastic shell has poor heat dissipation performance and is not beneficial to the heat dissipation of the electric core group.

In the aluminum shell scheme, the battery cavity is cut by extruding an aluminum profile, and the metal cover is locked, so that the strength of the battery shell is increased, the wall thickness is reduced, and the heat dissipation is stronger than that of the plastic shell scheme, but the aluminum shell scheme also has the following defects:

1. the waterproof performance of the battery is not good, and a glue groove cannot be formed when the wall thickness of the aluminum barrel is thin;

2. the front cover and the rear cover are stamping parts, and complex structures cannot be designed.

SUMMERY OF THE UTILITY MODEL

First, technical problem to be solved

In order to solve the above problems in the prior art, the utility model provides a lithium battery module shell, which not only guarantees the overall strength and waterproof performance of a battery, but also effectively reduces the assembly processes, reduces the cost and improves the quality stability of a finished product.

Second, technical scheme

In order to achieve the purpose, the utility model adopts the main technical scheme that:

a lithium battery module housing, comprising: the upper end and the lower end of the shell are in an open shape, the upper end and the lower end of the shell are respectively connected with a front cover assembly and a rear cover assembly, and the structure of the rear cover assembly is symmetrical to that of the front cover assembly;

the front cover assembly comprises a front cover body matched with the shell, the inner side of the front cover body extends inwards to form a connecting boss, a rubber ring is sleeved on the connecting boss, and the rubber ring is located between the inner wall of the shell and the connecting boss.

Furthermore, a plurality of fixing holes are formed in the upper side and the lower side of the shell respectively, side screws are connected to the fixing holes, and one ends of the side screws penetrate through the fixing holes to be connected with threaded holes in the front cover body.

Furthermore, a radiating fin mounting slot hole is formed in the front cover body, and a radiating fin is connected to the radiating fin mounting slot hole.

Furthermore, a wiring harness rubber SR head is connected to the front cover body.

Further, a bolt is connected between the front cover body and the shell.

Further, the housing is made of an aluminum material.

Third, beneficial effect

The utility model has the beneficial effects that: 1. the shell made of aluminum material can ensure the strength of the battery and the heat dissipation requirement;

2. the shell made of aluminum material can reduce the thickness of the shell and the size of the battery; the front cover assembly and the rear cover assembly adopt a front cover body and a rubber ring structure and are connected with the shell, so that the waterproof requirement can be met;

3. the side screws strengthen the tensile strength of the front cover assembly and the rear cover assembly, prevent the front cover assembly and the rear cover assembly from being ejected out by the battery cell module, and simultaneously enable the rubber ring to be more tightly matched;

4. the front cover component and the rear cover component are provided with the radiating fins and the SR head of the wiring harness rubber, so that the installation and the use are more flexible and diversified.

Drawings

FIG. 1 is a schematic structural diagram of one embodiment of the present invention;

fig. 2 is a schematic structural diagram of a front cover assembly according to an embodiment of the utility model.

Detailed Description

For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.

As shown in fig. 1 and 2, a lithium battery module casing according to an embodiment of the present invention includes: the upper end and the lower end of the shell are provided with the shell 1 in an open shape, and the shell 1 is made of aluminum materials, so that the heat dissipation effect is good; the upper end and the lower end of the shell 1 are respectively connected with a front cover assembly 2 and a rear cover assembly 3, and the structure of the rear cover assembly 3 is symmetrical to that of the front cover assembly 2.

Specifically, the front cover assembly 2 includes a front cover body 21 matched with the casing 1, the front cover body 21 is made of a plastic material, and the front cover body 21 is connected with the casing 1 through bolts 4, so as to further enhance the stability between the front cover assembly 2 and the casing 1.

Specifically, a heat sink mounting slot 22 is formed in the front cover body 21, and a heat sink 23 is connected to the heat sink mounting slot 22; the inboard internal extension of protecgulum body 21 forms and connects boss 24, it is equipped with rubber circle 25 to connect the cover on the boss 24, when protecgulum subassembly 2 connects in casing 1, rubber circle 25 is located the inner wall of casing 1 and connects between boss 24.

Further, in order to enhance the stability between the front cover assembly 2 and the casing 1, a plurality of fixing holes 11 are respectively formed in the upper side and the lower side of the casing 1, side screws 5 are connected to the fixing holes 11, and one ends of the side screws 5 penetrate through the fixing holes 11 to be connected with threaded holes 26 in the front cover body 21.

Further, in order to facilitate the electrical connection of the battery cell module in the casing 1, a wiring harness rubber SR head 6 is connected to the front cover body 21.

In this embodiment, the case 1 made of aluminum material can ensure the battery strength and the heat dissipation requirement; the case 1 made of an aluminum material can reduce the case thickness and reduce the battery size; the front cover assembly 2 and the rear cover assembly 3 adopt a front cover body 21 and rubber ring 25 structure and are connected with the shell 1 to meet the waterproof requirement; the side screws 5 strengthen the tensile strength of the front cover assembly 2 and the rear cover assembly 3, prevent the front cover assembly 2 and the rear cover assembly 3 from being ejected out by the battery cell module, and simultaneously enable the rubber ring 25 to be more tightly matched; the front cover assembly 2 and the rear cover assembly 3 are provided with the radiating fins 23 and the wiring harness rubber SR head 6, so that the installation and the use are more flexible and diversified.

The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.

Claims

1. A lithium battery module shell, its characterized in that, it includes: the upper end and the lower end of the shell (1) are open, the upper end and the lower end of the shell (1) are respectively connected with a front cover component (2) and a rear cover component (3), and the structure of the rear cover component (3) is symmetrical to that of the front cover component (2);

front shroud subassembly (2) include with casing (1) matched with protecgulum body (21), the inboard inside extension of protecgulum body (21) forms and connects boss (24), it is equipped with rubber circle (25) to connect the cover on boss (24), rubber circle (25) are located the inner wall of casing (1) and are connected between boss (24).

2. The lithium battery module casing as claimed in claim 1, wherein: a plurality of fixing holes (11) are formed in the upper side and the lower side of the shell (1) respectively, side screws (5) are connected to the fixing holes (11), and one ends of the side screws (5) penetrate through the fixing holes (11) to be connected with threaded holes (26) in the front cover body (21).

3. The lithium battery module casing as claimed in claim 1, wherein: the front cover body (21) is provided with a radiating fin mounting slotted hole (22), and the radiating fin mounting slotted hole (22) is connected with a radiating fin (23).

4. The lithium battery module casing as claimed in claim 1, wherein: the front cover body (21) is connected with a wiring harness rubber SR head (6).

5. The lithium battery module casing as claimed in claim 1, wherein: and a bolt (4) is connected between the front cover body (21) and the shell (1).

6. The lithium battery module casing as claimed in claim 1, wherein: the housing (1) is made of an aluminum material.