Thermal battery pack with single batteries activated sequentially and outputted parallelly

Abstract

The invention provides a thermal battery pack with single batteries activated sequentially and outputted parallelly. The thermal battery pack comprises a plurality of single thermal batteries, a structural shell and a sequential activation control circuit, wherein the single thermal batteries in all grades are sequentially activated under control of the sequential activation control circuit and are outputted parallelly. The number of the single thermal batteries depends on service hours of both a power system and the single thermal batteries. Output terminals of the single thermal batteries are in parallel connection through rectifier diodes, and activation terminals are connected to activation signal output ends corresponding to the control circuit. After being activated by external activation signals, the first-stage single thermal batteries control power-on operation of the circuit and start external output of the power system while judge output voltage or start a delay time sequence, and activation signals of second-stage single thermal batteries are outputted if power voltage is lower than a threshold value or delay time is up. This process is repeated until discharge of the last-stage single thermal batteries is completed.

Description

technical field [0001] The invention relates to the application field of thermal batteries, in particular to a thermal battery pack. The thermal battery pack is composed of multi-stage thermal battery cells, and each thermal battery cell is sequentially activated and output in parallel. Background technique [0002] In some applications, thermal batteries are required to provide working power for a longer period of time. At present, the longest working time of thermal batteries put into practical engineering applications in China does not exceed 1700s, and the longest working time of thermal batteries in the laboratory verification stage can reach 5900s, mainly by increasing the volume of thermal battery cells and adopting complex heat preservation structures. to fulfill. In terms of combined application of thermal battery cells, in order to meet the requirements of high power output and safety, low-power thermal battery cells are used in the combination to be activated si...

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Problems solved by technology

In the published patents, literature and writings, there is no application of thermal battery cell combination to achieve significant extension of working time

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