Composite insulation paper, card issuing motor and vehicle

By introducing a reinforcing adhesive layer into the composite insulating paper, the cracking problem of APA insulating paper and NPN insulating paper caused by insufficient mechanical properties during the motor stator assembly process is solved, the elongation at break and tear strength are improved, and the durability of the composite insulating paper is enhanced.

CN223450617UActive Publication Date: 2025-10-17BYD CO LTD +1
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Patent Information

Application Number
CN202422376473.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-27
Publication Date
2025-10-17
Estimated Expiration
2034-09-27

AI Technical Summary

Technical Problem

Existing APA insulation paper and NPN insulation paper are prone to cracking due to torsional force during the motor stator assembly process, and have insufficient mechanical properties, especially insufficient elongation at break and tear strength.

Method used

A reinforcing adhesive layer is introduced into the composite insulating paper. The reinforcing adhesive layer is composed of epoxy resin, polyacrylate or phenoxy resin and is arranged in a surface-type dot matrix distribution to enhance the contact surface between the adhesive layer and the paper layer and the polyester film layer, thereby improving the overall strength of the adhesive layer and the paper layer.

Benefits of technology

The elongation at break and tear strength of the composite insulation paper are improved, the cracking phenomenon during torsion is reduced, and the durability of the composite insulation paper is enhanced.

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Abstract

The utility model relates to composite insulation paper, a card issuing motor and a vehicle, and the composite insulation paper comprises a first paper layer, a first composite adhesive layer, a polyester film layer, a second composite adhesive layer and a second paper layer, and reinforced adhesive layers are arranged between the first paper layer and the first composite adhesive layer and between the second paper layer and the second composite adhesive layer. According to the composite insulation paper, the reinforcing adhesive layer is arranged between the composite adhesive layer and the paper layer, so that the overall strength of the paper layer can be improved, the elongation at break and the tearing strength of the composite insulation paper are improved, and the composite insulation paper can resist twisting force and does not crack when being twisted.
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