A lithium-ion power battery safety protective cover
A power battery and protective cover technology, which is applied in the direction of battery box/cover, battery box/cover material, battery pack components, etc., can solve the problem of low safety performance of lithium-ion power battery, achieve excellent physical and chemical adsorption performance, Improve heat dissipation and ventilation, increase the effect of insulation safety performance
Active Publication Date: 2016-09-21
湖北雄韬锂电有限公司
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Problems solved by technology
[0004] In order to solve the technical problem that the safety performance of the existing lithium-ion power battery is not high, the present invention provides a safety protective cover for the lithium battery. Absorb flammable and explosive electrolyte to achieve the purpose of safety protection
Method used
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Embodiment Construction
[0019] The invention proposes a lithium-ion power battery safety protective cover, which is made of modified composite plastic provided with nano-clay. like figure 2 As shown, it is a cross-sectional view of the first embodiment of the present invention. The protective cover is made of a modified composite plastic made of an external plastic layer 1 and a nanoclay layer 2 glued to the inner surface of the plastic layer 1. become.
[0020] like image 3 Shown is a cross-sectional view of the second embodiment of the present invention. The protective cover 3 is made of a modified composite plastic formed by embedding the nano-clay particles 4 in the plastic.
[0021] Nanoclay of the present invention is made by following steps:
[0022] Purchasing the primary montmorillonite through the market according to needs first;
[0023] mixing and heating organic cations or acids with the primary montmorillonite to obtain activated montmorillonite;
[0024] Wherein, the acid is at ...
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The utility model relates to a lithium-ion power battery safety protective cover, which is made of modified composite plastic provided with nano-clay. The preparation of nanoclay includes: first purchase purified primary montmorillonite; mix and heat organic cations or acids with primary montmorillonite to obtain activated montmorillonite; wherein, the acid is at least hydrochloric acid, nitric acid or sulfuric acid One, the solubility is 1-10 mol / L; mix the acid and primary montmorillonite according to the ratio of 1 g clay: 3-10 mL acid, heat and boil for more than 1.5 hours, and then wash to neutral, then the activated Montmorillonite: the activated montmorillonite is washed with deionized water, filtered, roasted at 200°C for more than 2 hours and dried, and finally ground and sieved with 60 mesh to obtain the finished nano-sized montmorillonite, which is nanoclay. The protective cover has the functions of heat dissipation and insulation, and through the composite of plastic and inorganic materials, it can quickly and efficiently absorb flammable and explosive electrolytes to achieve the purpose of safety protection.
Description
technical field [0001] The invention relates to a lithium battery, in particular to a protection device for a lithium ion power battery. Background technique [0002] Lithium-ion power batteries have been rapidly developed in the field of power applications due to their advantages of long life and high energy density. However, it cannot be ignored that although the lithium-ion power battery has a good management of the overcharge and discharge, thermal management and short circuit of the battery through the advanced battery management system. However, power batteries are almost all high-voltage and high-capacity batteries, and their batteries must be used in a "multi-parallel and multi-series" mode. Sometimes thousands of batteries need to be assembled together, so the safety factor is low. In addition, the main raw material of the lithium-ion power battery cell - electrolyte, is usually a flammable and explosive organic carbonate material. The electrolyte of the battery d...
Claims
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IPC IPC(8): H01M2/02H01M50/122
CPCH01M50/116H01M50/124Y02E60/10
Inventor 袁甲涂继军
Owner 湖北雄韬锂电有限公司