Air battery case and injection molding method thereof

A technology of air battery and zinc-air battery, which is applied to battery components, circuits, electrical components, etc. It can solve the problems of air battery shells that cannot be bonded and easy to leak, and achieve scientific injection molding methods, prevent short circuits, and prolong service life. The effect of longevity

Inactive Publication Date: 2013-02-13
北京九能京通新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to propose an air battery case to achieve the advantages of good sealing performance and not easy to leak, and to prolong the air Long service life of the battery case and improve its safety performance

Method used

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  • Air battery case and injection molding method thereof
  • Air battery case and injection molding method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0022] figure 1 It is a structural schematic diagram of the air battery case of the present invention; figure 2 It is a three-dimensional exploded view of the air battery case.

[0023] This embodiment discloses an air battery case, the structure of which is as follows figure 1 with figure 2 As shown, the air battery casing has a thickness of 1.0 cm, and includes a casing formed by welding two single-piece casings with a set accommodating space for placing a zinc negative electrode. The monolithic housing is rectangular and has a thickness of 2 mm. The monolithic case is a random copolymerized polypropylene case 2 wrapped around the positive air electrode 1, and each monolithic case is covered with more than two pieces of positive air electrodes, and the monolithic case is located outside the positive air electrode 1. A reinforcing rib 3 forming a grid is provided, and the reinforcing rib 3 is also made of polypropylene material, and is integrally injection-molded with t...

Embodiment 2

[0025] The difference from Example 1 is that the air battery casing disclosed in this embodiment has a thickness of 6.0 cm, and includes a casing with a set accommodation space formed by welding two single-piece shells. The set accommodation space is used for to place the zinc anode. The thickness of the monolithic casing is 9 mm, and the monolithic casing is a polyethylene casing wrapped around the positive electrode of the air. Without affecting the load-bearing strength of the air battery case, an inward depression is also provided at the place where the single-piece case is away from the positive electrode of the air (such as near the opening of the air battery case), which reduces the injection molding material and reduces the weight of the zinc battery case. body weight. The case of the air battery of this embodiment was tested for water, and no liquid leakage occurred.

[0026] In addition, ABS can also be used instead of polyethylene as the injection molding material...

Embodiment 3

[0028] This embodiment discloses the injection molding method of the air battery case described in Embodiment 1, which specifically includes the following steps:

[0029] (1) Use a high-pressure hot-melt injection molding machine to make random copolymerized polypropylene at a rate of 150t / cm 2 The pressure is injected into the mold with the air electrode through the injection head, the water is cooled to room temperature and shaped, and then the mold is released to obtain a single-piece shell;

[0030] (2) Ultrasonic welding is performed on the edges of the two opposite single-piece shells. The ultrasonic welding time is 50s, and the welding temperature is 150°C, so that the edges of the two battery shells are fully fused to obtain a battery with a set capacity. The shell of the space, that is, the air battery shell.

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Abstract

The invention provides an air battery case and an injection molding method thereof. The air battery case comprises a case body formed by fusion-welding two monolithic case bodies and provided with a set accommodating space, and the monolithic case bodies are polyethylene case bodies, polypropylene case bodies or ABS (Acrylonitrile Butadiene Styrene) case bodies covering the periphery of an air anode. The invention also discloses the injection molding method of the air battery case and a zinc air battery using the air battery case. The invention overcomes various defects of the prior art and realizes the advantages of excellent sealing property and difficulty in leakage, so that the service life of the air battery case is further prolonged, and the safety performance is improved.

Description

technical field [0001] The invention relates to power battery technology, in particular to an air battery case and an injection molding method thereof. Background technique [0002] At present, in the process of zinc-air battery industrialization, relatively mature zinc-air battery shells use nylon materials as injection molding materials. In the air battery case, nylon material is injected into a mold clamped with an air electrode, and a casing with a set accommodating space is manufactured by one-time molding, and the set accommodating cavity space is used for placing a zinc negative electrode. However, the nylon material cannot be completely bonded to the air electrode of the zinc-air battery (usually using low-pressure polyethylene or low-pressure polypropylene), and the air battery case of the prior art cannot be completely bonded to the air electrode, resulting in poor airtightness of the air battery case , the battery is prone to shell leakage during long-term work, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/02H01M2/08B29C69/02B29C45/00B29C65/02B29C65/08H01M12/06
CPCY02E60/128Y02E60/10
Inventor 刘伟春刘鹏飞许文
Owner 北京九能京通新能源科技有限公司
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