Battery module shell structure

Abstract

The utility model relates to a battery module shell structure which comprises a shell, one side of the shell is provided with an insertion bulge, the other side of the shell is provided with a positioning groove, and the insertion bulge of one battery module is used for being matched with the positioning groove of the other battery module in an insertion manner; and a total positive electrode and a total negative electrode are arranged on the upper side of the shell. According to the utility model, the inserting bulges and the positioning grooves are respectively designed on the side edges of the battery module, so that a positioning effect is achieved when the battery module is assembled into a battery pack, the assembly is convenient, the reverse assembly of the battery module can be prevented, and the assembly efficiency is improved. And the insertion bulges and the positioning grooves are designed in a protruding manner, so that a heat dissipation channel is formed between the bottom shells of the battery modules after the two adjacent battery modules are assembled, and the heat dissipation effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to a battery module housing structure. Background Technology

[0002] To meet voltage and capacity requirements, battery packs typically require multiple battery modules connected in series or parallel, with copper busbars directly connecting the modules. Currently, the battery module tabs are located on the sidewalls of the battery modules, causing interference to the copper busbar connection direction. Given the limited internal space of the battery pack, the connections between battery modules involve multiple directions, and special care must be taken to ensure the positive and negative terminals are not connected incorrectly. The interference of the copper busbar connection direction with the battery module sidewalls necessitates the use of copper busbars of different shapes for connection. Utility Model Content

[0003] The purpose of this utility model is to provide a battery module housing structure, optimize the housing structure, and solve the problem of inconvenience in assembling battery modules into battery packs.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] The battery module housing structure includes a housing, with a protrusion on one side and a positioning groove on the other side. The protrusion of one battery module is used to engage with the positioning groove of another battery module. The upper side of the housing has a main positive terminal and a main negative terminal.

[0006] Furthermore, the housing includes a bottom shell and a top cover. The bottom shell is used to place several battery cells, and each battery cell, after being connected, has a total positive terminal and a total negative terminal. The insertion protrusion and positioning groove are provided on the top cover.

[0007] Furthermore, the insertion protrusion is defined as being located on the front side of the upper cover, extending forward and protruding from the bottom shell, and the positioning groove is located on the rear side of the upper cover, with the positioning groove being formed on the positioning block extending backward.

[0008] Furthermore, both the insertion protrusion and the positioning groove are provided with screw holes.

[0009] Furthermore, the height of the protrusion is higher than that of the positioning groove, and the protrusion is provided with a countersunk groove, through which the screw hole passes.

[0010] Furthermore, each of the insertion protrusions and positioning grooves has two protrusions, with the two protrusions spaced apart in the left-right direction.

[0011] Furthermore, the bottom of the casing is provided with flange edges around its perimeter.

[0012] Furthermore, the bottom shell and the top cover are connected by screws.

[0013] Furthermore, the upper side of the cover is provided with a copper busbar mounting groove and a signal line mounting groove.

[0014] Furthermore, the copper busbar mounting slot is provided in two places, which are respectively connected to the spaces where the positive terminal and the negative terminal are located.

[0015] The beneficial effects of this utility model are:

[0016] This utility model has protrusions and positioning grooves on the sides of the battery module, which play a positioning role when assembling the battery pack, making assembly convenient and preventing the battery module from being assembled backwards; moreover, both the protrusions and positioning grooves are protruding designs, so that after two adjacent battery modules are assembled, there is a gap between the bottom shells of the battery modules, forming a heat dissipation channel, which is conducive to heat dissipation.

[0017] The positions of the main positive and main negative terminals of the battery module are designed in a reasonable way, which facilitates the connection between two adjacent battery modules using copper busbars. Attached Figure Description

[0018] Figure 1 This is a perspective view of the battery module housing structure of this utility model;

[0019] Figure 2 yes Figure 1 A three-dimensional view of the mid-bottom shell;

[0020] Figure 3 This is a schematic diagram of two battery modules assembled in a front-to-back direction.

[0021] 1. Bottom shell; 2. Flange edge; 21. Through hole; 3. Top cover; 4. Insert protrusion; 41. Countersunk groove; 42. Screw hole; 5. Positioning groove; 6. Copper busbar mounting groove; 71. Main positive terminal; 72. Main negative terminal; 8. Heat dissipation channel; 9. Connecting lug. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art are within the protection scope of the present utility model.

[0023] Embodiments of this utility model:

[0024] like Figures 1-3As shown, the battery module housing structure includes a housing, with a protrusion 4 on one side and a positioning groove 5 on the opposite side. The protrusion 4 is defined as being located on the front side of the upper cover 3, extending forward and protruding from the bottom shell 1. The positioning groove 5 is located on the rear side of the upper cover 3, and is formed on a rearwardly extending positioning block. The protrusion 4 of one battery module is used to engage with the positioning groove 5 of another battery module.

[0025] The housing includes a bottom shell 1 and a top cover 3. The insertion protrusion 4 and the positioning groove 5 are provided on the top cover 3. The bottom shell 1 is a rectangular box-shaped structure with an opening at the top, used to hold several battery cells. Each battery cell has a total positive terminal 71 and a total negative terminal 72 after being connected, which are respectively connected to the positive terminal and the negative terminal. The positive terminal and the negative terminal extend out from the top cover 3 to facilitate the connection of copper busbars.

[0026] The outer edge of the upper part of the bottom shell 1 is provided with several connecting ears 9. The connecting ears 9 have screw holes for screws to pass through. The upper cover 3 is connected to the upper part of the bottom shell 1 by screws, which are inserted into the upper cover 3 from bottom to top.

[0027] There are two insertion protrusions 4 and two positioning grooves 5, with the two insertion protrusions 4 spaced apart in the left and right directions.

[0028] During assembly and use, the insertion protrusion 4 of one battery module is inserted into the positioning groove 5 of another battery module in the front-to-back direction. Both the insertion protrusion 4 and the positioning groove 5 are provided with screw holes 42, and the insertion protrusion 4 is connected by screws after being inserted into the positioning groove 5. The insertion protrusion 4 is provided with a recess 41, and the screw hole 42 passes through the recess 41 vertically. The design of the recess 41 ensures that the upper end of the screw inserted from top to bottom does not protrude after installation.

[0029] Since both the insertion protrusion 4 and the positioning groove 5 are designed to protrude in the front and rear directions, there is a gap between the bottom shell 1 of the battery modules after the two adjacent battery modules are assembled, forming a heat dissipation channel 8.

[0030] One side of the battery module is designed with a protrusion 4, and the other side is designed with a positioning groove 5. This can prevent the battery modules from being installed backwards when assembling two adjacent battery modules, and can accurately and quickly complete the assembly of the battery modules. Multiple battery modules constitute a battery pack.

[0031] The bottom of the base shell 1 has flange edges 2 around its perimeter, and multiple through holes 21 are provided on the flange edges 2. Customers have two installation options depending on the specific scenario: they can use pressure strips to press against the flange edges 2 to secure the bottom of the battery module, or they can use bolts for connection. The through holes 21 can be used as positioning holes and also reduce weight.

[0032] The upper side of the top cover 3 is provided with copper busbar mounting slots 6. There are two copper busbar mounting slots 6, which communicate with the spaces containing the positive and negative terminals, respectively. After adjacent battery modules in the front-to-back direction are positioned and aligned, the copper busbars can be inserted into the copper busbar mounting slots 6. One end of the copper busbar connects to the positive terminal of one battery module, and the other end connects to the negative terminal of another battery module. When several battery modules are connected sequentially, copper busbars of the same specification can be used for connection. If two rows of battery modules are designed, the two adjacent battery modules located at the front or rear ends can be connected using copper busbars of a different specification. In short, the required number of copper busbars is small, facilitating connection.

[0033] As an optimization, when the design has two rows of battery modules, one row of battery modules has a protrusion on the left side and the other row of battery modules has a positioning groove on the right side, which can also be positioned and connected in the left and right direction and form a heat dissipation channel.

Claims

1. A battery module housing structure, characterized in that: The device includes a housing with a protrusion on one side and a positioning groove on the other side. The protrusion of one battery module is used to engage with the positioning groove of another battery module. The upper side of the housing has a total positive terminal and a total negative terminal. The housing includes a bottom shell and a top cover. The bottom shell is used to hold several battery cells. Each battery cell, after being connected, has the aforementioned total positive terminal and total negative terminal. The protrusion and positioning groove are provided on the top cover.

2. The battery module housing structure according to claim 1, characterized in that: The insertion protrusion is defined as being located on the front side of the top cover, extending forward and protruding from the bottom shell, while the positioning groove is located on the rear side of the top cover and is formed on the positioning block extending backward.

3. The battery module housing structure according to claim 2, characterized in that: Both the insertion protrusion and the positioning groove are provided with screw holes.

4. The battery module housing structure according to claim 2, characterized in that: The height of the protrusion is higher than that of the positioning groove, and the protrusion has a countersunk groove. The screw hole passes through the countersunk groove from top to bottom.

5. The battery module housing structure according to claim 2, characterized in that: The insertion protrusion and positioning groove are each provided in twos, with the two insertion protrusions spaced apart in the left-right direction.

6. The battery module housing structure according to claim 1, characterized in that: The bottom of the shell is provided with flange edges around its perimeter.

7. The battery module housing structure according to claim 1, characterized in that: The bottom shell and the top cover are connected by screws.

8. The battery module housing structure according to claim 1, characterized in that: The upper side of the cover is provided with a copper busbar mounting groove.

9. The battery module housing structure according to claim 8, characterized in that: The copper busbar mounting slot is provided in two places, which are respectively connected to the spaces where the positive terminal and the negative terminal are located.

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