Battery

Abstract

The utility model provides a battery which comprises a battery cell structure and a connecting structure arranged at one end of the battery cell structure, the connecting structure comprises a PCM (Pulse Code Modulation), a hot melt adhesive and a rubber shell, and the PCM is fixedly connected with the rubber shell in a hot melt adhesive low-pressure injection molding packaging mode. According to the battery disclosed by the utility model, the battery protection module mounted at the head of the battery cell structure and the rubber shell are subjected to low-pressure injection molding packaging by using the hot melt adhesive, so that excellent bonding strength and sealing performance between the battery protection plate and the battery shell are realized, the structural stability of battery assembly can be improved, and the appearance quality of the battery is optimized; and meanwhile, the production efficiency and the environmental protection performance of the product are improved.

Description

Technical Field

[0001] This utility model relates to the field of lithium-ion battery technology, and in particular to a battery. Background Technology

[0002] With the widespread use of electronic devices, the requirements for battery performance and safety are becoming increasingly stringent. Steel-cased battery cells, due to their excellent mechanical strength and stability, have been widely used in the battery industry. However, effectively combining the casing, PCM (Battery Protection Module), and the head of the steel-cased battery cell during the encapsulation process, while ensuring the reliability and stability of the encapsulation, has always been a technical challenge.

[0003] Current common packaging methods suffer from poor packaging effect, safety hazards such as leakage and short circuit, as well as technical problems such as low production efficiency and high cost. Utility Model Content

[0004] To address the above technical problems, this utility model proposes a battery that can improve the packaging quality and performance of steel-cased battery cells.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a battery, comprising a cell structure and a connection structure disposed at one end of the cell structure, the connection structure comprising a PCM, hot melt adhesive and a housing, wherein the PCM is fixedly connected to the housing by low-pressure injection molding of the hot melt adhesive.

[0006] Furthermore, the PCM includes a PCB and an FPC, with the FPC disposed on the side of the PCB away from the cell structure.

[0007] Furthermore, the hot melt adhesive is applied to the outer surface of the PCB.

[0008] Furthermore, the cell structure includes a cell body, terminals, and insulating components, with the terminals and insulating components located on opposite sides of the cell body.

[0009] Furthermore, the battery cell body is a steel-cased battery cell body.

[0010] Furthermore, the insulating component is insulating adhesive paper.

[0011] The battery of this utility model achieves excellent bonding strength and sealing between the battery protection board and the battery casing by using hot melt adhesive to encapsulate the battery protection module installed at the head of the steel-cased cell with the plastic casing through low-pressure injection molding. This improves the structural stability of the battery assembly, optimizes the appearance quality of the battery, and enhances its waterproof and dustproof performance, while also improving product production efficiency and environmental performance.

[0012] The battery of this invention significantly improves the stability of the packaging structure, effectively preventing loosening and displacement of components during use; enhances the battery's waterproof and dustproof performance, improving its reliability and lifespan; optimizes the production process, increasing production efficiency and reducing production costs; and improves the overall quality and consistency of the battery, meeting the market's demand for high-quality batteries. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the battery of this utility model;

[0014] Figure 2 for Figure 1 A schematic diagram of the battery's planar structure is shown.

[0015] Figure 3 for Figure 1 The exploded view of the battery shown;

[0016] Figure 4 for Figure 1 The relative positions of the PCM and the casing of the battery are shown.

[0017] Figure 5 for Figure 1 The diagram shows the relative positions of the battery protection board and the injection molding part of the battery.

[0018] Legend: 1-Cell structure; 2-Terminal; 3-PCB; 4-FPC; 5-Hot melt adhesive; 6-Shell; 7-Insulating component; 8-Label; 9-Cell body. Detailed Implementation

[0019] Please see Figures 1-2 This utility model discloses a battery, including a cell structure 1 and a connection structure disposed at one end of the cell structure. The connection structure includes a PCM, hot melt adhesive 5 and a shell 6. The PCM is fixedly connected to the shell by low-pressure injection molding of the hot melt adhesive.

[0020] In one embodiment, the PCM includes a PCB3 and an FPC4 (flexible circuit board), the FPC being disposed on the side of the PCB away from the cell structure.

[0021] In one embodiment, the hot melt adhesive is applied to the outer surface of the PCB.

[0022] In one embodiment, the cell structure includes a cell body 9, terminals 2, and an insulating element 7, wherein the terminals and the insulating element are disposed on opposite sides of the cell body.

[0023] In one embodiment, the cell body is a steel-cased cell body.

[0024] In one embodiment, the insulating element is insulating adhesive paper.

[0025] The battery installation method of this utility model involves first preparing a steel-cased battery cell, a plastic casing, and a PCM (Polymer Capacitor Molding Molding), ensuring that the surfaces of all components are clean and undamaged. Second, the PCM is laser-spot-welded to the terminal post at the head of the steel-cased battery cell. Third, the laser-spot-welded PCM is placed into the plastic casing, seamlessly connecting the casing and the steel-cased battery cell to ensure a proper fit. Then, using a specially designed low-pressure injection mold, injection molding material is injected into the junction of the steel-cased battery cell head, the plastic casing, and the PCM. By controlling the injection pressure and temperature, the injection molding material is ensured to fully fill the gaps at the junction, forming a uniform and robust encapsulation layer. Finally, after the injection molding material cools and solidifies, the encapsulation is complete. This utility model's battery, with its cell body, plastic casing, and PCM encapsulated using low-pressure injection molding, has been tested and found to meet the expected standards in terms of structural stability and waterproof / dustproof performance, with production efficiency increased by 30% compared to traditional processes.

[0026] The battery of this utility model achieves excellent bonding strength and sealing between the battery protection board and the battery casing by using hot melt adhesive to encapsulate the battery protection module installed at the head of the steel-cased cell with the plastic casing through low-pressure injection molding. This improves the structural stability of the battery assembly, optimizes the appearance quality of the battery, and enhances its waterproof and dustproof performance, while also improving product production efficiency and environmental performance.

[0027] The battery of this invention significantly improves the stability of the packaging structure, effectively preventing loosening and displacement of components during use; enhances the battery's waterproof and dustproof performance, improving its reliability and lifespan; optimizes the production process, increasing production efficiency and reducing production costs; and improves the overall quality and consistency of the battery, meeting the market's demand for high-quality batteries.

[0028] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not limited to the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A battery, characterized in that, The device includes a battery cell structure and a connection structure located at one end of the battery cell structure. The connection structure includes a PCM, hot melt adhesive, and a housing. The PCM is fixedly connected to the housing by low-pressure injection molding of the hot melt adhesive.

2. The battery according to claim 1, characterized in that: The PCM includes a PCB and an FPC, with the FPC located on the side of the PCB away from the cell structure.

3. A battery according to claim 2, characterized in that: The hot melt adhesive is applied to the outer surface of the PCB.

4. A battery according to claim 3, characterized in that: The battery cell structure includes a battery cell body, terminals, and insulating components, with the terminals and insulating components located on opposite sides of the battery cell body.

5. A battery according to claim 4, characterized in that: The battery cell body is a steel-cased battery cell body.

6. A battery according to claim 4, characterized in that: The insulating component is insulating adhesive paper.

Images