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Battery device comprising self-heating layer

A battery device and self-heating technology, which is applied in the direction of secondary batteries, battery pack components, and isolation of batteries from their environment, etc., can solve problems affecting mobility, short boards, and low-temperature characteristics that cannot guarantee vehicle startup, and achieve the goal of preventing heat Loss, effect of improving discharge performance

Active Publication Date: 2021-03-23
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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  • Battery device comprising 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 substance one 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, the particle size of which is less than 100um. The diameter of the leakage hole is 0.8mm. The mass ratio of substance 1 and substance 2 is 1:1, 20g respectively. The number of rubber bosses facing the single large surface of the battery is 3, which are evenly arranged under the battery contact layer. Close the rubber boss and the leakage hole, put the above-mentioned battery containing the self-heating layer into a low-temperature test box at -50°C, let it stand for 2 hours, s...

Embodiment 2

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

Embodiment 3

[0024] The difference between embodiment 3 and embodiment 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 sequentially comprises a battery, the self-heating layer and a heat preservation and insulation layer from inside to outside. The device can provide heat for 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, and the discharge performance of the battery at low temperature is further improved.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a battery device including a self-heating layer. Background technique [0002] At present, the starting of military equipment such as tanks, tracked vehicles, armored vehicles, etc. generally depends 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 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. caused 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 reg...

Claims

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Application Information

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Patent Type & Authority Applications(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