Novel cylindrical battery module structure

Abstract

The utility model relates to a novel cylindrical battery module structure which comprises a shell and a battery module, a handle is arranged on the upper side of the shell, the shell comprises a shell upper cover and a shell lower cover, battery cell placing areas are arranged in the shell upper cover and the shell lower cover, supports are arranged on the inner sides of the battery cell placing areas, and the battery cell placing areas are arranged on the supports. The shell is internally provided with a battery module, the battery module comprises battery cells, the positions of the battery cells correspond to the positions of the supports, and the battery cells are connected through a busbar; according to the device, the plurality of brackets are separately arranged in the battery cell placement area, one battery cell can be effectively isolated and prevented from spreading to other battery cells after thermal runaway, and the lower shell cover, the upper shell cover and the battery cells are bonded and fixed together through the heat-conducting structural adhesive, so that heat conduction can be effectively performed on the battery cells, heat can be conducted to the shell, and the structural fixing strength is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery modules, and specifically relates to a novel cylindrical battery module structure. Background Art

[0002] Cylindrical lithium battery is a rechargeable battery that uses lithium ions as charge carriers. It uses a cylindrical shell, and the interior is composed of a positive electrode, a negative electrode, a separator and an electrolyte. Cylindrical lithium batteries have high energy density and long life, so they are widely used in various fields.

[0003] With the development of the new energy industry, the cost and safety performance of batteries have attracted more and more attention. The cylindrical lithium battery module is developing towards large-scale and integrated directions, which means that a large number of cylindrical lithium batteries need to be connected in series and parallel. Compared with the original traditional solution, battery cell supports are required for series and parallel connection, which increases battery costs and reduces work efficiency, and does not have a good effect on battery heat dissipation. When thermal runaway occurs in the battery cell, it is very easy to cause large-scale heat diffusion quickly, which may cause dangerous situations such as combustion or explosion. Summary of the invention

[0004] The utility model aims to provide a novel cylindrical battery module structure to solve the problems raised in the above background technology.

[0005] The purpose of the utility model is achieved as follows: a novel cylindrical battery module structure, which includes a shell and a battery module, a handle is arranged on the upper side of the shell, the shell includes an upper shell cover and a lower shell cover, the upper shell cover and the lower shell cover are both provided with a battery cell placement area, a bracket is arranged inside the battery cell placement area, a battery module is arranged inside the shell, the battery module includes battery cells, the battery cells and the bracket positions correspond to each other, and the battery cells are connected by a bus.

[0006] Thermally conductive structural adhesive is coated between the battery core and the upper cover of the shell, and between the battery core and the lower cover of the shell.

[0007] The bracket and the shell are integrated.

[0008] The bracket is circular in shape.

[0009] The battery cells are connected in series by single-sided welding.

[0010] The single-sided welding method type is laser welding, ultrasonic welding or resistance welding.

[0011] The beneficial effects of the utility model are as follows: when the device is in use, the shell is composed of an upper shell cover and a lower shell cover, the upper shell cover and the lower shell cover are fixed, a battery cell placement area is arranged inside the upper shell cover and the lower shell cover, the bracket is fixedly arranged in the battery cell placement area, the battery module is welded by the battery cells through the bus bar according to the corresponding series requirements, the battery module is located in the battery cell placement area, the battery cells and the bracket are placed correspondingly, a plurality of brackets are separately arranged in the battery cell placement area in the device, a battery cell can be effectively isolated after thermal runaway to avoid spreading to other battery cells, the lower shell cover, the upper shell cover and the battery cell are bonded and fixed together by the thermal conductive structural adhesive, which can effectively conduct heat to the battery cell, conduct the heat to the shell and increase the structural fixing strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is an overall exploded view of a novel cylindrical battery module structure of the utility model.

[0013] Figure 2 This is a side view of the battery cell placement area of ​​a new cylindrical battery module structure of the utility model.

[0014] Figure 3 The utility model is a schematic diagram of battery module assembly of a novel cylindrical battery module structure.

[0015] Figure 4 This is a schematic diagram of busbar welding of a novel cylindrical battery module structure of the utility model.

[0016] Figure 5 This is a schematic diagram of the sealing of a new cylindrical battery module structure of the utility model.

[0017] In the figure: 1, shell 2, battery module 3, handle 4, bracket 5, bus 6, battery cell placement area 7, shell upper cover 8, shell lower cover 9, battery cell. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings. Example

[0019] like Figure 1-5 As shown, a novel cylindrical battery module structure comprises a shell 1 and a battery module 2, wherein a handle 3 is arranged on the upper side of the shell 1, the shell 1 comprises an upper shell cover 7 and a lower shell cover 8, both the upper shell cover 7 and the lower shell cover 8 are provided with a battery cell placement area 6, a bracket 4 is arranged inside the battery cell placement area 6, a battery module 2 is arranged inside the shell 1, the battery module 2 comprises a battery cell 9, the battery cell 9 and the bracket 4 are located corresponding to each other, and the battery cell 9 is connected via a bus 5.

[0020] Thermally conductive structural adhesive is coated between the battery cell 9 and the upper shell cover 7 and between the battery cell 9 and the lower shell cover 8. The heat of the battery cell is transferred to the upper shell cover 7 and the lower shell cover 8 through the thermally conductive structural adhesive to achieve a heat conduction effect.

[0021] When the utility model is in use, the shell 1 is composed of an upper shell cover 7 and a lower shell cover 8, the upper shell cover 7 and the lower shell cover 8 are fixed, and a battery cell placement area 6 is arranged inside the upper shell cover 7 and the lower shell cover 8, and the bracket 4 is fixedly arranged in the battery cell placement area 6, and the battery module 2 is welded by the battery cell 9 through the bus 5 according to the corresponding series requirements, and the battery module 2 is located in the battery cell placement area 6, and the battery cell 9 is placed corresponding to the bracket 4. In this device, a plurality of brackets 4 are separately arranged in the battery cell placement area 6, and a battery cell 9 can be effectively isolated after thermal runaway to avoid spreading to other battery cells 9. The lower shell cover 8, the upper shell cover 7 and the battery cell 9 are bonded and fixed together by the thermal conductive structural adhesive, which can effectively conduct heat to the battery cell 9, conduct the heat to the shell 1 and increase the structural fixing strength. Example

[0022] like Figure 1-5 As shown, a novel cylindrical battery module structure comprises a shell 1 and a battery module 2, wherein a handle 3 is arranged on the upper side of the shell 1, the shell 1 comprises an upper shell cover 7 and a lower shell cover 8, both the upper shell cover 7 and the lower shell cover 8 are provided with a battery cell placement area 6, a bracket 4 is arranged inside the battery cell placement area 6, a battery module 2 is arranged inside the shell 1, the battery module 2 comprises a battery cell 9, the battery cell 9 and the bracket 4 are located corresponding to each other, and the battery cell 9 is connected via a bus 5.

[0023] For better effect, thermal conductive structural adhesive is coated between the battery cell 9 and the upper cover 7 of the shell, and between the battery cell 9 and the lower cover 8 of the shell. The heat of the battery cell is transferred to the upper cover 7 and the lower cover 8 of the shell through the thermal conductive structural adhesive to achieve the effect of heat conduction.

[0024] For better effect, the bracket 4 and the shell 1 are integrated.

[0025] For better effect, the bracket 4 is circular in shape.

[0026] For better effect, the battery cells 9 are connected in series by single-sided welding, avoiding the double-sided welding of the original traditional solution, optimizing the size and arrangement of the wire harness, improving work efficiency, and reducing work procedures.

[0027] For better effect, the single-sided welding method type is laser welding, ultrasonic welding or resistance welding, and one or a combination of them can be selected according to the specific situation.

[0028] When the utility model is in use, the shell 1 is composed of an upper shell cover 7 and a lower shell cover 8, the upper shell cover 7 and the lower shell cover 8 are fixed, and a battery cell placement area 6 is arranged inside the upper shell cover 7 and the lower shell cover 8, and the bracket 4 is fixedly arranged in the battery cell placement area 6, and the battery module 2 is welded by the battery cell 9 through the bus 5 according to the corresponding series requirements, and the battery module 2 is located in the battery cell placement area 6, and the battery cell 9 is placed corresponding to the bracket 4. In this device, a plurality of brackets 4 are separately arranged in the battery cell placement area 6, and the number of brackets 4 is set according to the number of battery cells 9, and the number of brackets 4 is the same as that of battery cells 9. In this embodiment, the number of battery cells 9 is sixteen, and a battery cell 9 can be effectively isolated after thermal runaway to prevent it from spreading to other battery cells 9. The lower shell cover 8, the upper shell cover 7 and the battery cell 9 are bonded and fixed together by a thermal conductive structural adhesive, which can effectively conduct heat to the battery cell 9, conduct the heat to the shell 1 and increase the structural fixing strength. Furthermore, the bracket 4 and the heat-conducting structure glue can jointly support the battery cell 9 and divide each battery cell 9 into independent areas, further preventing the battery cell 9 from affecting other battery cells 9 after it gets out of control. The device integrates the bracket 4 and the shell 1 of the original traditional solution to form an integrated setting. There is no need to separately produce the bracket 4 and the installation process, thereby reducing product materials and reducing product costs.

Claims

1. A novel cylindrical battery module structure, comprising a housing and a battery module, characterized in that: A handle is arranged on the upper side of the shell, and the shell includes an upper shell cover and a lower shell cover, and a battery cell placement area is arranged inside the upper shell cover and the lower shell cover, and a bracket is arranged inside the battery cell placement area, and a battery module is arranged inside the shell, and the battery module includes battery cells, and the positions of the battery cells and the bracket correspond to each other, and the battery cells are connected through a bus.

2. A novel cylindrical battery module structure according to claim 1, characterized in that: Thermally conductive structural adhesive is coated between the battery core and the upper cover of the shell, and between the battery core and the lower cover of the shell.

3. According to claim 1, a novel cylindrical battery module structure is characterized in that: The bracket and the shell are injection molded as one piece.

4. A novel cylindrical battery module structure according to claim 3, characterized in that: The bracket is circular in shape.

5. The novel cylindrical battery module structure according to claim 1 is characterized in that: The battery cells are connected in series by single-sided welding.

6. A novel cylindrical battery module structure according to claim 5, characterized in that: The single-sided welding method type is laser welding, ultrasonic welding or resistance welding.

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