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Battery packaging material, flexibly packaged battery and battery heat control device

A soft-pack battery and battery technology, which is applied to battery box/case materials, secondary batteries, battery pack components, etc., can solve the problems of insufficient cooling water resistance and corrosion resistance, and is easy to be corroded and perforated, so as to achieve long-term cooling resistance Good liquid corrosion performance and corrosion resistance

Pending Publication Date: 2017-09-12
谢彦君
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the defect that the aluminum-plastic film used for packaging batteries (battery) in the prior art is antifreeze-resistant coolant for vehicles (abbreviated as antifreeze, its main components are ethylene glycol and water) or the lack of anti-corrosion performance of cooling water, that is, it is easy to Corroded and perforated defects, the present invention provides an aluminum-plastic composite film (hereinafter referred to as aluminum-plastic film) that can be used for lithium-ion secondary battery packaging, which has higher corrosion resistance to coolant

Method used

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  • Battery packaging material, flexibly packaged battery and battery heat control device
  • Battery packaging material, flexibly packaged battery and battery heat control device
  • Battery packaging material, flexibly packaged battery and battery heat control device

Examples

Experimental program
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Effect test

Embodiment 1

[0100] as attached figure 1 An aluminum-plastic film is provided, which includes an aluminum foil layer 1 and plastic layers 2 and 3 compounded on both sides of the aluminum foil layer, wherein the aluminum foil layer 1 is composed of a 3-series aluminum alloy aluminum foil layer 7 (core material) and 7 It is formed by compounding the aluminum alloy aluminum foil layer 6 (leather material). For example, 3003 aluminum alloy and 7072 aluminum alloy are used for compounding, and the 7072 aluminum alloy layer 6 is compounded on the outside of the 3003 aluminum alloy layer 7 . In other words, the aluminum-plastic film is formed by sequentially stacking a heat-sealing layer, a 3003 aluminum foil layer, a 7072 aluminum foil layer and a nylon layer, wherein the aluminum foil layer and the plastic layer are bonded with a traditional adhesive. In other words, the layers of the aluminum-plastic film from the inside to the outside are: heat-sealing layer, adhesive layer, 3003 aluminum fo...

Embodiment 2

[0105] The structure of this embodiment is roughly similar to that of Embodiment 1. The aluminum alloy layer 1 is also formed by a composite of a core material 7 and a skin material 6, and the skin material 6 is an anode protection layer. The difference is that the 7072 aluminum alloy is replaced by the 3003 aluminum alloy with Zn added (3003+1%Zn or 3003+1.5%Zn in the table below) as the sacrificial anode layer. The potential of 3003+1%Zn is about -0.83V to -0.89V, which is lower than that of 3003 core material.

[0106] Table 1 Alloy chemical composition

[0107]

Embodiment 3

[0109] as attached figure 2 A second aluminum-plastic film is provided, which includes an aluminum foil layer 1 and a thermoplastic resin film layer 3 composited inside the aluminum foil layer, wherein the aluminum foil layer is a composite layer aluminum foil, and the aluminum foil layer contains a core material and is located outside the core material The corrosion potential of the skin material of the aluminum foil layer is lower than that of the core material. Further, the core material of the aluminum foil layer is formed of corrosion-resistant aluminum alloy or pure aluminum. For example, the composite aluminum foil layer 1 is formed by compounding the 3-series aluminum foil layer 7 (such as 3003) and the 7-series aluminum foil layer 6 (such as 7072). Only the inner side of the aluminum foil layer 1 is compounded with a thermoplastic resin film layer 3 (also called a heat-sealing layer 3, such as CPP), without an external nylon protective layer.

[0110] The thickness...

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Abstract

The invention relates to a battery packaging material for packaging a battery. The solving scheme for aluminum plastic composite films for packaging the battery includes that the battery packaging material comprises an aluminum foil layer and plastic layers; the plastic layers are arranged on the surfaces of the aluminum foil layer by means of composition; the aluminum foil layer is made of anticorrosion aluminum alloy. The battery packaging material has the advantage that the shortcoming of insufficient anticorrosion properties of battery packaging materials for packaging batteries in the prior art can be overcome by the aid of the battery packaging material.

Description

technical field [0001] The present invention relates to battery packaging materials and soft-pack batteries, in particular to packaging materials for soft-pack batteries and soft-pack batteries that can be applied to soak in cooling water, such as water cooling systems that can be applied to the fields of vehicle power batteries and energy storage batteries medium. Background technique [0002] The thermal management of the power battery is one of the core technologies of the power battery. Most of the existing pouch battery cooling methods are air cooling. Even water cooling uses a water-cooled plate to contact the battery to exchange heat. This heat exchange method The corresponding contact thermal resistance is high and the heat transfer efficiency is low. Throughout the prior art, there is no application of directly soaking the pouch battery in water or antifreeze, and there is no corresponding special aluminum-plastic film. [0003] In the prior art, the aluminum-plas...

Claims

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Application Information

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IPC IPC(8): H01M2/02H01M10/0525H01M10/613H01M10/625H01M10/647H01M10/6567
CPCH01M10/0525H01M10/613H01M10/625H01M10/647H01M10/6567H01M50/116H01M50/124Y02E60/10
Inventor 不公告发明人
Owner 谢彦君
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