Cell unit for thermal cell with high specific energy

A single battery and thermal battery technology, which is applied in the direction of battery electrodes, circuits, electrical components, etc., can solve problems that have not entered the stage of engineering application

Inactive Publication Date: 2013-01-02
SHANGHAI INST OF SPACE POWER SOURCES
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Problems solved by technology

[0003] The development of thermal batteries abroad is slightly faster than that at home. According to reports, the use of LiB / CoS 2 The thermal battery of the electrochemical system has a specific energy of 120Wh / kg, but it has not entered the stage of engineering application

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  • Cell unit for thermal cell with high specific energy
  • Cell unit for thermal cell with high specific energy
  • Cell unit for thermal cell with high specific energy

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Embodiment Construction

[0015] The present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments. These examples should be understood as only for illustrating the present invention but not for limiting the protection scope of the present invention. After reading the contents of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent changes and modifications also fall within the scope defined by the claims of the present invention.

[0016] Preferred embodiment of the present invention:

[0017] Single cell design: using Li(Si) / LiCl-LiBr-LiF / CoS 2 Electrochemical system, the content of heating powder in the whole single battery is about 39%, LiSi negative electrode and CoS 2 The weight ratio of the positive electrode is 1:3, 10% LiCl-LiBr-LiF ternary all-lithium electrolyte is added to the LiSi negative electrode, and graphite insulation material is added betw...

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Abstract

The invention relates to the field of thermal cell, and provides a cell unit for thermal cell with high specific energy (75 Wh / kg). The invention is characterized in that: (1) the optimal content of heating powder in the cell unit is 30-39 wt.% in the thermal balance design of the cell unit, and when the content of heating powder in the cell unit is above 40 wt.%, potential safety hazards are present in the thermal cell; (2) the optimal weight ratio of LiSi anode and CoS2 cathode is 1: 2.5 to 1: 3.5 in the compatibility design of cell unit for Li(Si) / LiCl-LiBr-LiF / CoS2 electrochemical system thermal cell; (3) 2-10% of LiCl-LiBr-LiF tertiary lithium electrolyte is added to the anode material for promoting conductivity and increasing the utilization rate of the anode active material; and (4) a graphite isolation material with good conductivity is arranged between the cathode sheet and the heating sheet for reducing thermal impact of the heating sheet on the cathode material and increasing the utilization rate of the cathode active material.

Description

technical field [0001] The invention belongs to the technical field of thermal batteries, and in particular relates to a single thermal battery with high specific energy. Background technique [0002] With the changes in the world pattern and the rapid development of science and technology, a new generation of advanced weapons and equipment are emerging in the world, such as tactical and strategic missile systems with medium and long-range strike capabilities, which also put forward higher requirements for missile thermal batteries. High specific energy thermal battery will become the main development direction in the future. [0003] The development of thermal batteries abroad is slightly faster than that at home. According to reports, the use of LiB / CoS 2 The thermal battery of the electrochemical system has a specific energy of 120Wh / kg, but it has not entered the stage of engineering application. The use of LiB / NiCl has been reported in China 2 The thermal battery of ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M6/36H01M4/62
CPCY02E60/12
Inventor 黄海燕高俊丽郑要武胡华荣迟亮张丽平
Owner SHANGHAI INST OF SPACE POWER SOURCES
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