Thermal battery stack with low internal resistance and preparation method

A technology for thermal batteries and battery stacks, which is applied to the components of primary batteries, battery pack components, circuits, etc., can solve the problems of very serious influence of thermal batteries, drop of output voltage of thermal batteries, and failure of thermal batteries to work normally. The effect of reducing assembly time, reducing battery internal resistance, and reducing stacking processes
CN114464825APending Publication Date: 2022-05-10GUIZHOU MEILING POWER SUPPLY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUIZHOU MEILING POWER SUPPLY CO LTD
Publication Date
2022-05-10

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Abstract

The invention discloses a low-internal-resistance thermal battery stack and a preparation method in the technical field of thermal batteries. The preparation method comprises the following steps: weighing, flattening and stacking conductive isolation powder, heating powder, conductive isolation powder, negative electrode powder, diaphragm powder and positive electrode powder respectively; carrying out repeated monomer stacking according to the required monomer quantity; and then pressing and demolding are carried out. According to the thermal battery technology in the scheme, the gaps among the pole pieces are reduced, the internal resistance of the battery is reduced, the performance of the thermal battery is improved, and particularly, a pulse type thermal battery is more obvious.
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Description

technical field

[0001] The invention relates to the technical field of thermal batteries, in particular to a low internal resistance thermal battery cell stack and a preparation method. Background technique

[0002] A thermal battery is a primary reserve battery that uses molten salt as an electrolyte, which is activated by melting it with its own heat source. It has the advantages of short activation time, wide operating environment temperature, long storage period, and maintenance-free, and is more and more widely used in weapon equipment systems.

[0003] Thermal battery stacks are generally composed of heating sheets, stainless steel current collectors, composite sheets (including positive electrodes, diaphragms and negative electrodes integrally formed), stainless steel current collectors and other pole pieces stacked in a certain order, and jacks or presses are required after stacking. A machine, etc. exerts a certain pressure on the battery stack to reduce the contac...

Claims

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