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A battery device comprising a self-heating layer

A battery device, self-heating technology, applied in secondary batteries, battery pack components, battery isolation from its environment, etc., can solve problems such as affecting mobility, short boards, and inconvenience in field operations, to prevent heat loss, improve The effect of discharge performance

Active Publication Date: 2022-07-12
SICHUAN PANOVASIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the starting of military equipment such as tanks, tracked vehicles, armored vehicles, etc. generally relies on external AC-DC conversion power supply. In an emergency, the lead-acid battery equipped with the tank can be used to start. However, both methods have very obvious shortcomings.
First of all, the AC-DC conversion power supply must rely on external AC input, usually through a diesel generator set to obtain power input. Although the weight and volume of the equipment itself is not large, the characteristics of relying on external power input seriously affect its mobility, bringing great challenges to field operations. a lot of inconvenience
The lead-acid battery equipped with the tank itself is rarely used as an emergency starting power supply, especially in extremely cold regions (the temperature is lower than -20°C), and the low-temperature characteristics of the lead-acid battery basically cannot guarantee the starting of the vehicle.
At present, the low-temperature resistance performance of lithium-ion batteries can meet the requirements of conventional low-temperature operating environments (about -20°C), but the application requirements of military equipment in cold regions have yet to be improved.

Method used

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  • A battery device comprising a self-heating layer
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  • A battery device comprising a self-heating layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Wrap and paste the self-heating layer on the outer surface of a square lithium battery with a size of 50*30*4mm and a nominal capacity of 1000mAh. The battery insulation jacket is made of polyurethane insulation material. The first substance in the self-heating reaction layer is a calcium chloride aqueous solution with a concentration of 29.9%, and the solidification temperature of the calcium chloride aqueous solution with this concentration is -55°C. The second substance is calcium oxide powder, and the particle size of the powder is less than 100um. The diameter of the leakage hole is 0.8mm. The mass ratio of substance one and substance two is 1:1, and they are respectively 20g. The number of rubber bosses facing a single large surface of the battery is 3, and they are evenly arranged under the battery contact layer. Close the rubber boss and the leakage hole, put the battery containing the self-heating layer into a low temperature test box at -50 °C, and after sta...

Embodiment 2

[0022] The difference between Example 2 and Example 1 is that the mass of Substance 1 and Substance 2 are 10 g respectively.

Embodiment 3

[0024] The difference between Example 3 and Example 1 is that the diameter of the leakage hole is 1.2 mm.

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Abstract

The invention discloses a battery device comprising a self-heating layer. The device comprises a battery, a self-heating layer and a thermal insulation layer in sequence from the inside to the outside. The device can provide heat to the battery by utilizing the exothermic reaction of the self-heating layer, so that the actual temperature of the battery is higher than the ambient temperature, thereby improving the discharge performance of the battery at low temperature.

Description

technical field [0001] The present invention relates to the technical field of batteries, in particular to a battery device comprising a self-heating layer. Background technique [0002] At present, the starting of military equipment such as tanks, crawler vehicles, armored vehicles, etc. generally relies on external AC-DC conversion power supply. In an emergency, the lead-acid battery equipped by the tank itself can be used to start, but these two methods have obvious shortcomings. First of all, the AC-DC conversion power supply must rely on the external AC input. Generally, the power input is obtained through the diesel generator set. Although the weight and volume of the equipment itself are not large, the characteristics of relying on the external power input seriously affect its mobility, which brings great influence to field operations. a lot of inconvenience. The lead-acid battery equipped by the tank itself, as an emergency starting power source, is rarely used, esp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/615H01M10/658H01M50/24H01M50/233H01M50/249H01M50/258
CPCH01M10/615H01M10/658Y02E60/10
Inventor 高剑汤争耀周雪王铭
Owner SICHUAN PANOVASIC TECH