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Graphene heating sheet and preparation method and application thereof

A kind of graphene, heating sheet technology

Inactive Publication Date: 2021-06-15
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current lithium-ion power battery heating devices on the market generally have a series of problems such as complex structure, high cost, low heat exchange efficiency, poor structural flexibility, and short service life, which are difficult to fully meet the needs of practical applications.

Method used

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  • Graphene heating sheet and preparation method and application thereof
  • Graphene heating sheet and preparation method and application thereof
  • Graphene heating sheet and preparation method and application thereof

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Embodiment Construction

[0030] The present invention will be further explained and illustrated below in conjunction with specific embodiments.

[0031] Such as Figure 1~3 As shown, a graphene heating chip, its composition structure includes a lower insulating layer 10, a heating layer 20, a copper conductive layer 30 and an upper insulating layer 40 arranged sequentially from bottom to top, and also includes a Positive electrode 50 and negative electrode 60; The composition of described heating layer 20 comprises flexible base material layer 201 and the graphene heating layer 202 that is coated on flexible base material layer two sides; The surface of described positive electrode 50 and negative electrode 60 is coated with There is a ceramic powder coating 70 with a positive temperature coefficient thermistor effect; the graphene heating layer 202 is electrically connected to the copper conductive layer 30; the flexible substrate layer 201 is an aramid fiber film; the lower insulating layer 10 is a...

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Abstract

The invention discloses a graphene heating sheet and a preparation method and application thereof. The graphene heating sheet structurally comprises a lower insulating layer, a heating layer, a copper conducting layer and an upper insulating layer which are sequentially arranged from bottom to top, and further comprises a positive electrode and a negative electrode which are arranged on the copper conducting layer. The heating layer is composed of a flexible base material layer and graphene heating layers coating the two faces of the flexible base material layer. The surfaces of the positive electrode and the negative electrode are coated with ceramic powder coatings with a positive temperature coefficient thermistor effect; and the graphene heating layer is electrically connected with the copper conductive layer. The graphene heating sheet has the advantages of being foldable, long in service life, low in cost, high in heating speed, good in safety and the like, can be used for low-temperature heating of the lithium ion battery, and can also achieve a self-temperature-limiting effect.

Description

technical field [0001] The invention relates to the technical field of lithium ion batteries, in particular to a graphene heating sheet and its preparation method and application. Background technique [0002] With the increasingly prominent energy crisis and environmental pollution problems, energy conservation and emission reduction have formed a global consensus, and pure electric vehicles have the characteristics of zero emission, low noise, and high energy efficiency, and are one of the more ideal energy-saving and environmentally friendly vehicles. vigorously promoting. [0003] Lithium-ion power battery is currently the most widely used power battery and the main source of power for pure electric vehicles. Its performance and service life will directly affect the performance and service life of pure electric vehicles. As we all know, as the seasons change, new energy vehicles will inevitably work in a low temperature environment. In a low temperature environment, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/28B32B27/02B32B27/34B32B27/12B32B3/08B32B33/00H01M10/615H01M10/617H01M10/625H01M10/637H01M10/6571
CPCB32B3/08B32B5/02B32B27/12B32B27/281B32B33/00B32B2255/02B32B2255/20B32B2262/0269B32B2307/206B32B2307/30B32B2457/10H01M10/615H01M10/617H01M10/625H01M10/637H01M10/6571Y02E60/10
Inventor 汪双凤穆罕默德·阿卜杜拉希丘祥晖
Owner SOUTH CHINA UNIV OF TECH
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