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Insulating film for battery heat conduction and battery thereof

An insulating film and battery technology, applied in secondary batteries, electrolyte battery manufacturing, non-aqueous electrolyte batteries, etc., can solve the problems of battery temperature gradient difference, high battery heat generation, and temperature cannot be transmitted in time, so as to ensure consistency, Improve the service life and accelerate the effect of heat dissipation

Pending Publication Date: 2020-12-11
JIANGSU ZENIO NEW ENERGY BATTERY TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an insulating film for battery heat conduction, which can effectively solve the problem of battery heat dissipation consistency
Especially for the blade battery, because the battery is very long, the heat generated at the tab position of the battery is high during operation, and the temperature cannot be transmitted to the center of the battery in time, causing the battery to form a temperature gradient difference, which affects the service life of the battery

Method used

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  • Insulating film for battery heat conduction and battery thereof
  • Insulating film for battery heat conduction and battery thereof
  • Insulating film for battery heat conduction and battery thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] use figure 1 The structure of the prismatic battery, and the thermal conductivity of the high thermal conductivity part is 2.8W / m.K, the thermal conductivity of the middle thermal conductivity part is 2.0W / m.K, and the thermal conductivity of the low thermal conductivity part is 1.0W / m.K. The insulating film wraps the two large surfaces, the side surfaces, and the bottom surface of the battery core 1 .

[0022] The insulating film includes a PET insulating substrate and a thermally conductive glue that is formed on the PET insulating substrate by screen printing the prepared raw materials, and the insulating film is adhered to the surface of the electric core through the thermally conductive glue to wrap it. The raw materials for the preparation of thermal conductive adhesive include 35 parts of methyl vinyl polysiloxane, 8 parts of methyl hydrogen polysiloxane, 0.3 parts of platinum catalyst, 0.03 parts of 1-vinyl cyclohexanol, 20 parts of alumina, 20 parts aluminum h...

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Abstract

The invention provides an insulating film for heat conduction of a battery and the battery thereof, the insulating film for heat conduction of the battery covers the outer side of the battery, the battery is provided with a pole or a lug arranged at one end part in the length direction, and the heat conductivity coefficient is gradually reduced in a gradient manner from one end provided with the pole or the lug to the length direction of the battery. According to the heat dissipation characteristics of the battery, the insulating film with high heat conductivity coefficient is arranged on theouter side of the pole or the lug with high heat generation quantity, the insulating film with low heat conductivity coefficient is arranged at one end, far away from the pole or the lug, of the length direction, and the heat of the battery is quickly transferred through the gradient change of the heat conductivity coefficient of the insulating film; the temperature consistency of each part of thebattery is ensured and the service life of the battery is prolonged. Especially for the battery module, the heat of the battery top cover can be quickly transferred to the bottom, i.e., to the water-cooling heat dissipation system, so as to accelerate the heat dissipation of the battery.

Description

technical field [0001] The invention relates to the technical field of insulating films, in particular to an insulating film used for battery heat conduction and a battery thereof. Background technique [0002] Due to its excellent performance, lithium-ion batteries have been widely used in consumer mobile phones, power tools, medical electronics and other fields. At the same time, they also show good application prospects in new energy vehicles, energy storage base stations and other fields. Lithium-ion batteries can be mainly divided into three categories according to the packaging form, namely cylindrical, square and soft packs. Different structures mean different advantages and disadvantages. Usually, the tabs of the pouch battery protrude outside for external connection, and the tabs are arranged in the length direction of the battery. Square batteries usually have poles protruding from the outside for external connection. Square batteries are generally square batterie...

Claims

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Application Information

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IPC IPC(8): H01M10/613H01M10/617H01M10/653H01M10/6551H01M10/058H01M10/0525
CPCH01M10/613H01M10/617H01M10/653H01M10/6551H01M10/058H01M10/0525Y02E60/10Y02P70/50
Inventor 游坤宋贺黄天翔华秉杨
Owner JIANGSU ZENIO NEW ENERGY BATTERY TECH CO LTD
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