CN213546418U

CN213546418U - Electricity core casing and power battery module

Info

Publication number: CN213546418U
Application number: CN202022268278.0U
Authority: CN
Inventors: 张万财; 杨强
Original assignee: Xiamen Haichen New Energy Technology Co Ltd
Current assignee: Xiamen Hithium Energy Storage Technology Co Ltd
Priority date: 2020-10-13
Filing date: 2020-10-13
Publication date: 2021-06-25
Anticipated expiration: 2030-10-13

Abstract

The utility model discloses an electricity core casing and power battery module, wherein, electricity core casing has at least one to be equipped with the locating part on the side relative with adjacent electric core, locating part protrusion in electricity core casing side. The utility model discloses an it is equipped with the locating part on the side relative with adjacent electric core to have at least one at electric core casing, the locating part protrusion is in electric core casing side, at electric core module assembly back, has the clearance between the adjacent electric core casing side for self can form the wind channel, need not to realize the wind channel structure at module or PACK end, and convenient to use, air-cooled effectual, the locating part has increased electric core casing self structural strength simultaneously, can reduce electric core casing's deformation, play the effect of protection electric core in assembly and use.

Description

Electricity core casing and power battery module

Technical Field

The utility model relates to a power battery technical field, concretely relates to electricity core casing and power battery module.

Background

The electric core is the minimum unit of power battery, also is electric energy storage unit, and electric core generally divide into square shell electric core, laminate polymer electric core, cylinder electric core three kinds, and a plurality of electric core passes through the frame packing and forms the battery module together. At present when carrying out square-shell electric core encapsulation, adjacent electric core casing both sides laminating is in the same place, and there is not the wind channel between two electric core casing contact surfaces, when the battery needs forced air cooling, realizes the wind channel structure at module or PACK end usually, and the forced air cooling effect is relatively poor. Moreover, at present, the battery core needs glue or is assisted to fix in the assembling process, so that the battery module is inconvenient to assemble. In addition, the deformation of the cell shell is large when the cell expands, and the use and assembly of the cell are affected.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at: to the square shell electricity core among the prior art and have the not enough problem of the aforesaid when using the assembly, provide an electricity core casing and power battery module, through set up convex locating part in electricity core casing side for self can form the wind channel between the adjacent electricity core casing side, and the assembly between the electric core of being convenient for is spacing moreover, has also increased the structural strength of electricity core casing simultaneously.

In order to realize the purpose, the utility model discloses a technical scheme be:

the utility model provides an electricity core casing, electricity core casing has at least one and is equipped with the locating part on the side relative with adjacent electric core, the locating part protrusion is in electricity core casing side.

The utility model discloses an it is equipped with the locating part on the side relative with adjacent electric core to have at least one at electric core casing, the locating part protrusion is in electric core casing side, at electric core module assembly back, has the clearance between the adjacent electric core casing side for self can form the wind channel, need not to realize the wind channel structure at module or PACK end, and convenient to use, air-cooled effectual, the locating part has increased electric core casing self structural strength simultaneously, can reduce electric core casing's deformation, play the effect of protection electric core in assembly and use.

As the utility model discloses an optimal scheme, all be equipped with the locating part on two sides that electric core casing and adjacent electric core are relative, the locating part of electric core casing both sides misplaces each other and can mutually support spacingly with the locating part on the adjacent electric core side. After the locating parts are arranged on the two side faces of the battery core shell, when the battery core module is assembled, because the locating parts on the two sides of the battery core shell are mutually staggered and can be matched with the locating parts on the side faces of the adjacent battery cores in a mutual limiting mode, the adjacent battery cores can be assembled in a limiting mode, the shearing force between the battery cores is increased, glue is not needed to be used, or an auxiliary tool is not needed to be used for fixing, and the assembly of the battery module is convenient.

As the preferred scheme of the utility model, the locating part is a plurality of sand grip that sets up along the vertical interval of electricity core casing side.

As the utility model discloses an optimized scheme, a plurality of sand grip of electricity core shell one side divide into N group, electricity core shell opposite side is equipped with N +1 sand grip, and every group sand grip can block into in the interval position between the adjacent electricity core shell side N +1 sand grip. So, can make adjacent electric core form the assembly when the assembly spacing, increase the shearing force between electric core and electric core.

As the preferred scheme of the utility model, all sand grips are provided with the chamfer near the one end of electricity core casing bottom. Therefore, the battery cell can be conveniently inserted between the adjacent battery cells during assembly.

As the utility model discloses an optimal scheme, locating part and electricity core casing side structure as an organic whole are favorable to improving the wholeness ability of electricity core casing, also are convenient for simultaneously manufacture.

As the preferred scheme of the utility model, the top of electricity core casing is equipped with the lamina tecti.

As the preferred scheme of the utility model, be equipped with utmost point post, explosion-proof valve subassembly and annotate the liquid mouth on the lamina tecti.

The utility model provides a power battery module, includes a plurality of electricity core, electricity core has adopted above electricity core casing.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses a have at least one side relative with adjacent electric core to be equipped with the locating part on the electric core casing, the locating part protrusion is in electric core casing side, after electric core module assembly, have the clearance between the adjacent electric core casing side for self can form the wind channel, need not to realize the wind channel structure at module or PACK end, and convenient to use, air-cooled effectual, the locating part has increased electric core casing self structural strength simultaneously, can reduce the deformation of electric core casing, play the effect of protection electric core in assembly and use;

2. after the locating parts are arranged on the two side faces of the battery core shell, when the battery core module is assembled, because the locating parts on the two sides of the battery core shell are mutually staggered and can be matched with the locating parts on the side faces of the adjacent battery cores in a mutual limiting mode, the adjacent battery cores can be assembled in a limiting mode, the shearing force between the battery cores is increased, glue is not needed to be used, or an auxiliary tool is not needed to be used for fixing, and the assembly of the battery module is convenient.

Drawings

Fig. 1 is a perspective view of a cell casing according to the present invention.

Fig. 2 is the utility model discloses well adjacent electric core assembly plan.

The labels in the figure are: 1-electric core shell, 11-position limiting part, 12-chamfer, 2-top cover plate, 3-pole, 4-explosion-proof valve component and 5-liquid injection port.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

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 for purposes of illustration only and are not intended to limit the invention.

Example 1

As shown in fig. 1 and fig. 2, in the embodiment, a cell casing is provided, where at least one side surface of the cell casing 1, which is opposite to an adjacent cell, is provided with a limiting part 11, and the limiting part 11 protrudes out of a side surface of the cell casing 1.

In this embodiment, the two opposite side surfaces of the cell casing 1 and the adjacent cell are respectively provided with the limiting parts 11, and the limiting parts 11 on the two sides of the cell casing 1 are mutually staggered and can be mutually matched with the limiting parts 11 on the side surfaces of the adjacent cell casing 1 for limiting. After the locating parts are arranged on the two side faces of the battery core shell, when the battery core module is assembled, because the locating parts on the two sides of the battery core shell are mutually staggered and can be matched with the locating parts on the side faces of the adjacent battery cores in a mutual limiting mode, the adjacent battery cores can be assembled in a limiting mode, the shearing force between the battery cores is increased, glue is not needed to be used, or an auxiliary tool is not needed to be used for fixing, and the assembly of the battery module is convenient.

In this embodiment, the limiting members 11 are protruding strips with rectangular cross sections, which are longitudinally arranged along the side surface of the electric core casing 1 at intervals, and the height of the limiting members 11 protruding from the side surface of the electric core casing is 1-5 mm. Of course, the limiting member 11 may have other shapes, such as a circle, a square, etc.

In this embodiment, eight convex strips on one side of the cell shell 1 are divided into four groups, five convex strips are arranged on the other side of the cell shell, and two convex strips in each group can be clamped into the interval positions between five convex strips on the side surface of the adjacent cell shell. So, can make adjacent electric core form the assembly when the assembly spacing, increase the shearing force between electric core and electric core.

In this embodiment, a chamfer 12 is disposed at one end of each raised line close to the bottom of the cell casing, and preferably, the size of the chamfer is 10 to 20 °, that is, an included angle between a chamfer inclined plane and a side surface of the cell casing is formed. Therefore, the battery cell can be conveniently inserted between the adjacent battery cells during assembly.

In this embodiment, the locating part 11 and the side surface of the cell shell 1 are of an integrated structure, which is beneficial to improving the overall performance of the cell shell and is also convenient for production and manufacturing. The locating part 11 can adopt to mould plastics, die-casting and tensile and electric core casing 1 integrated into one piece, also can adopt milling mode processing to form after electric core casing 1 shaping.

In this embodiment, a top cover plate 2 is arranged at the top end of the cell casing 1, and a terminal 3, an explosion-proof valve assembly 4 and a liquid injection port 5 are arranged on the top cover plate 2, wherein the terminal 3 is used for electrically connecting adjacent cells; the explosion-proof valve assembly 4 is used for automatically opening and releasing pressure when the internal pressure of the battery cell is overlarge so as to prevent explosion; the liquid injection port 5 is used for injecting the electrolyte into the electric core case.

Example 2

The embodiment provides a power battery module, which comprises a plurality of battery cells, wherein the battery cells adopt the battery cell shell 1 in the embodiment 1.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the principles of the present invention should be included within the scope of the present invention.

Claims

1. The utility model provides an electricity core casing, its characterized in that, electricity core casing has at least one and is equipped with the locating part on the side relative with adjacent electric core, the locating part protrusion is in electricity core casing side.

2. The cell casing of claim 1, wherein the cell casing has two side surfaces opposite to the adjacent cells, and the position-limiting members on the two sides of the cell casing are staggered and can cooperate with the position-limiting members on the side surfaces of the adjacent cells for position limitation.

3. The cell casing of claim 2, wherein the retaining member is a plurality of ribs longitudinally spaced along the side of the cell casing.

4. The cell casing of claim 3, wherein the plurality of ribs on one side of the cell casing are divided into N sets, and the other side of the cell casing is provided with N +1 ribs, and each set of ribs can be snapped into spaced locations between N +1 ribs on the side of adjacent cell casings.

5. The cell casing of claim 4, wherein all ribs are chamfered at an end proximate to the bottom of the cell casing.

6. The cell casing of any of claims 1 to 5, wherein the retaining member is integrally formed with the side of the cell casing.

7. The cell casing of any of claims 1 to 5, wherein the top end of the cell casing is provided with a top cover plate.

8. The cell casing of claim 7, wherein the top cover plate is provided with a terminal post, an explosion-proof valve assembly and a liquid injection port.

9. A power battery module, characterized by comprising a plurality of battery cells, wherein the battery cells employ the battery cell casing according to any one of claims 1 to 8.