Multi-layer co-extrusion cooling pipe and preparation method

A multi-layer co-extrusion and cooling tube technology, applied in chemical instruments and methods, tubes, rigid tubes, etc., can solve problems such as reducing battery life, safety accidents, stress cracking, etc., to improve operational reliability and improve service life. , Excellent corrosion resistance effect
CN112128478AInactive Publication Date: 2020-12-25扬州华光新材料股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
扬州华光新材料股份有限公司
Publication Date
2020-12-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a multi-layer co-extrusion cooling pipe and a preparation method. The invention relates to the technical field of cooling pipes, in particular to a cooling water path pipe in anew energy automobile battery pack. The invention provides the multi-layer co-extrusion cooling pipe which is resistant to permeation and environment stress cracking and is suitable for new energy vehicle battery pack heat dissipation application occasions, and the preparation method. A multi-layer structure of the pipe is manufactured through co-extrusion of multiple layers of molds and then curing molding; the pipe comprises at least one protective layer and at least one modified high-density polyethylene (HDPE) layer; the protective layer and the modified HDPE layer are arranged at intervals; bonding layers are arranged between the layers arranged at intervals; and the modified HDPE layer is made of silane crosslinked high-density polyethylene. According to the multi-layer co-extrusioncooling pipe and the preparation method provided by the invention, the service life of the battery pack is greatly prolonged, meanwhile, the operation reliability of the battery pack is improved, andthe risks of safety accidents such as electric leakage and fire catching are reduced.
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Description

technical field

[0001] The invention relates to the technical field of cooling pipes, in particular to a cooling water pipe inside a battery pack of a new energy vehicle. Background technique

[0002] With the development of the new energy automobile industry, domestic and international markets have higher and higher cooling requirements for the battery system of new energy vehicles. The cooling pipeline structure originally borrowed from fuel vehicles is increasingly unable to meet the requirements of new energy vehicles for the cooling system, especially the requirements for water penetration of plastic pipelines in the battery pack. The fundamental reason is: the overall sealing structure of the battery pack and The battery insulation environment in the bag requires that the water penetration of the cooling liquid plastic pipeline in the bag should be as low as possible in the high temperature working environment.

[0003] As the power source of new energy vehicles, batt...

Claims

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