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Thermal insulation method of closed thermal battery

A thermal battery, closed technology, applied in the use/maintenance of primary batteries, battery pack components, primary batteries to battery grouping, etc., to achieve obvious effects, solve safety problems, and simple and easy measures.

Inactive Publication Date: 2019-06-14
GUIZHOU MEILING POWER SUPPLY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention overcomes the heat accumulation in the working process of the hot battery, avoids the safety problem of battery thermal runaway caused by excessive heat, and cuts off the heat in the high temperature area of ​​the battery stack through thermal isolation, so as to realize one or more integrated heat Division, so as to solve the problem of heat accumulation in the high temperature area of ​​the battery, effectively avoid the thermal runaway caused by it during the working process of the battery, improve the safety of the battery, and at the same time, the power output of the battery will not be affected

Method used

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  • Thermal insulation method of closed thermal battery
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  • Thermal insulation method of closed thermal battery

Examples

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Effect test

Embodiment 1

[0034] A thermal isolation method for a closed thermal battery, the thermal isolation treatment method is interrupted or bridged; when the area requiring thermal isolation is a parallel monomer room, the interrupted thermal isolation is used, and the processing method is : In the area with the highest operating temperature of the battery, a pyrotechnic system or thermal insulation material is added between two monomers connected in parallel in the battery stack; the interrupted thermal insulation is thermal insulation at one or more places in the battery stack ; The thickness of the pyrotechnic system is 1-30mm; The thickness of the thermal insulation material is 1-30mm;

[0035] When the area requiring thermal isolation is between cells connected in series, a bridge type is used for thermal isolation. The treatment method is: in the highest temperature area where the thermal battery works, a thermal isolation material is added between the two cells connected in series in the b...

Embodiment 2

[0038] A thermal isolation method for a closed thermal battery. The area that needs thermal isolation is between parallel monomers, and the thermal isolation is performed in an interrupted manner. A pyrotechnic system or thermal insulation material is added between each cell; the interrupted thermal insulation is thermal insulation at one or more places in the battery stack; the thickness of the pyrotechnic system is 1-30 mm; the thermal insulation The thickness of the material is 1-30mm; the thermal insulation material is flexible thermal insulation material, mica, asbestos paper, Min-K material, ceramic membrane, hollow skeleton aluminum, hollow skeleton copper, airgel gasket, glass fiber, silicon One or more of alumina fibers, high silica fibers or thermal insulation blankets. The schematic diagram of the working circuit of this embodiment is as figure 2 or 2, the schematic diagram of the structure of the thermal battery after thermal isolation is as follows Figure 6 sh...

Embodiment 3

[0040]A thermal isolation method for a closed thermal battery. The area that needs thermal isolation is between the monomers connected in series, and a bridge type is used for thermal isolation. A thermal insulation material is added between the individual cells, and the current flow between the isolated cells is realized by adding a drain piece at the partition to bridge; Partition; the drainage sheet is one or more of silver, copper, iron, nickel metal products; the thickness of the thermal insulation material is 1-30mm; the thermal insulation material is flexible thermal insulation material, mica, One or more of asbestos paper, Min-K material, ceramic membrane, hollow skeleton aluminum, hollow skeleton copper, airgel gasket, glass fiber, aluminum silicate fiber, high silica fiber or thermal insulation blanket. The schematic diagram of the working circuit after thermal isolation of this embodiment is as Figure 4 shown.

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Abstract

The invention discloses a thermal insulation method of a closed thermal battery. The method is an interrupting method or a bridging method. The interrupting thermal insulation processing method comprises the following steps: a pyrotechnic system or a thermal insulation material is added between two parallel cells in the battery stack in the region with the highest working temperature of the battery. The bridging thermal isolation processing method comprises the following steps: adding a thermal isolation material between two cells connected in series in a battery stack in the region where thetemperature of the thermal battery is the highest; and bridging the thermal isolation material between the two cells by adding a drain sheet at the partition to realize the current flow between the isolation cells. At the same time of partition the heat in the middle of the battery stack, the invention also ensures the output of battery electric energy, so as to effectively disperse the heat accumulation in the middle of the battery and prevent the safety problem of the battery thermal runaway caused by the heat accumulation in the middle of the battery stack. The method is simple and easy toimplement, has an obvious effect, is very suitable for the closed thermal battery and is suitable for popularization and use.

Description

technical field [0001] The invention belongs to the technical field of thermal batteries, and in particular relates to a thermal isolation method for a closed thermal battery. Background technique [0002] Thermal battery is a heat-activated reserve battery. When stored at room temperature, the electrolyte is a non-conductive solid. When in use, an electric ignition head or a firing pin mechanism is used to ignite the heating agent inside, so that the electrolyte melts into an ion conductor and is activated. A reserve battery, the storage time is theoretically unlimited, and the actual measurable value is more than 17 years. Due to its low internal resistance, wide operating temperature range, long storage time, rapid and reliable activation, and no maintenance, it has developed into an ideal power supply for modern weapons such as missiles, nuclear weapons, and artillery. However, since the thermal battery is a primary battery, its safety before activation cannot be accura...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/14H01M2/20H01M6/36H01M6/42H01M6/50
Inventor 孟剑段其智陈铤万伟华潘志鹏王京亮李云伟
Owner GUIZHOU MEILING POWER SUPPLY CO LTD
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