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Heat slow-release element with layered structure, and application of heat slow-release element in thermal battery

A layered structure and thermal technology, applied in the direction of primary battery use/maintenance, battery cooling/heating, delayed action cells, etc., can solve the problem of rapid internal temperature drop rate, achieve slow down rate, improve performance, and have wide application prospects Effect

Active Publication Date: 2021-08-31
INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned deficiencies or defects, the object of the present invention is to provide a heat slow-release element with a layered structure, which can effectively solve the problems of rapid internal temperature drop rate during the working process of the thermal battery.

Method used

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  • Heat slow-release element with layered structure, and application of heat slow-release element in thermal battery
  • Heat slow-release element with layered structure, and application of heat slow-release element in thermal battery
  • Heat slow-release element with layered structure, and application of heat slow-release element in thermal battery

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Embodiment 1

[0036] This embodiment provides a heat slow-release element with a layered structure and its application in thermal batteries, including:

[0037] 1) Heat slow-release element with a layered structure: composed of 0.2g reducing agent powder, 0.3g "lithium" thin-layer powder, and 0.3g oxidant powder, pressed according to cold isostatic pressing, wherein The reducing agent is Li-Si alloy (44wt.% Li), and the "lithium" thin-layer powder is composed of 40wt.% LiCl-37wt.% LiBr-52wt.% KBr and 60wt.% CeO 2 Composition, the oxidant powder is composed of 80wt.% CuO and 20wt.% LiCl-KCl-LiBr.

[0038] 2) Thermal battery with layered heat slow-release elements: except that two layered heat slow-release elements are placed at both ends of the thermal battery cell stack, other aspects are consistent with the traditional thermal battery manufacturing and assembly process.

Embodiment 2

[0040] This embodiment provides a heat slow-release element with a layered structure and its application, including:

[0041] 1) Heat slow-release element with a layered structure: composed of 0.3g reducing agent powder, 0.4g "lithium" thin-layer powder, and 0.4g oxidant powder, pressed according to cold isostatic pressing, wherein The reducing agent is Li-B alloy (55wt.% Li), and the "lithium" thin-layer powder is composed of 50wt.% LiCl-55wt.% KCl, 50wt.% Sm 2 o 3 Composition, the oxidant powder is CuO;

[0042]2) Thermal battery containing layered heat slow-release elements: except that two layered heat slow-release elements are placed at both ends of the thermal battery cell stack and one is placed in the middle of the thermal battery stack, other aspects are different from traditional thermal cells. The battery manufacturing and assembly process remains the same.

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Abstract

The invention discloses a heat slow-release element with a layered structure, and application of the heat slow-release element in a thermal battery, and belongs to the technical field of thermal batteries. The layered structure heat slow-release element disclosed by the invention is sequentially provided with an oxidant layer, a lithium-permeable thin layer and a reducing agent layer, the lithium-permeable thin layer is constructed by adopting an ion-electron conductor, and the transmission speed of lithium in the lithium-permeable thin layer is controlled, so that the reaction speed between the oxidant and the reducing agent in the heat slow-release element is controlled, the heat release rate of the heat slow-release element is further controlled, and the internal temperature of the thermal battery is accurately controlled, so that when the heat slow-release element with the layered structure is applied to the thermal battery product, the performance of the battery is obviously improved, and the thermal battery has a wide application prospect.

Description

technical field [0001] The invention relates to the technical field of thermal batteries, in particular to a heat slow-release element with a layered structure and its application in thermal batteries. Background technique [0002] Thermal battery is a thermally activated reserve battery, which is mainly composed of positive electrode, electrolyte, negative electrode, heating material, etc. It has the advantages of short activation time, long storage time, wide operating temperature range, and high specific power. It is widely used in various military and civil affairs. in the field. [0003] At present, thermal batteries mainly use Fe / KClO 4 As a heating material, the internal temperature of the thermal battery can be rapidly raised to its working temperature by one heating. During the working process of the thermal battery, its internal heat is gradually released to the outside, which causes the internal temperature of the thermal battery to continue to drop, which in tu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M6/50H01M6/36
CPCH01M6/5038H01M6/36Y02E60/10
Inventor 曹勇崔益秀王超阎红卫刘鸿雁魏晓春崔艳华兰伟杨开敏高晨阳刘效疆
Owner INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS
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