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Li-SOCl2 battery and power supply control circuit thereof

A technology of thionyl chloride battery and power supply control circuit, which is applied to battery circuit devices, circuits, secondary batteries, etc., can solve problems such as short circuit, over-discharge, and overheating, and achieve the effect of preventing overheating and battery safety problems

Inactive Publication Date: 2012-02-15
BEIJING INST OF ELECTRONICS SYST ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problems of overheating, over-discharging and short circuit in the existing lithium-thionyl chloride battery while realizing the discharge current density of large current, the present invention adopts a lithium-thionyl chloride battery suitable for high discharge current density. The safety design method designs a lithium-thionyl chloride battery and its power supply control circuit. This method has the advantages of high safety factor, simple structure, high reliability, quick operation, two-level double insurance control, and taking into account both ground testing and testing. Features of the state of use

Method used

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  • Li-SOCl2 battery and power supply control circuit thereof
  • Li-SOCl2 battery and power supply control circuit thereof
  • Li-SOCl2 battery and power supply control circuit thereof

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specific Embodiment approach 1

[0015] Specific Embodiments 1. This embodiment describes a lithium-thionyl chloride battery consisting of a lithium-thionyl chloride single battery 3, a housing 1, a backing plate 2 and a plurality of thermistors 4. The housing 1 In order to seal the casing, the plurality of lithium-thionyl chloride single cells 3 are arranged in a matrix and fixed in the casing 1, and the electrodes of all lithium-thionyl chloride single cells 3 face the same direction, so After the plurality of lithium-thionyl chloride single batteries 3 are connected in series, the multiple output terminals are connected to the output interface 5 on the top of the casing 1, and between each two adjacent lithium-thionyl chloride single batteries 3 and the lithium-thionyl chloride single batteries 3 are connected in series. Thermally conductive silicon grease 6 is filled between the thionyl chloride single cells 3 and the side walls of the housing, and a thermistor 4 is fixed between every two adjacent lithium...

specific Embodiment approach 2

[0027] Specific embodiment 2. What this embodiment describes is the further limitation of the lithium-thionyl chloride battery described in specific embodiment 1. In the lithium-thionyl chloride battery described in this embodiment, each lithium-thionyl chloride After the two output electrodes of the single battery 3 are connected in parallel, they are respectively connected to the electrode output interface 5 of the battery through the fuse 7 .

[0028] In this embodiment, a fuse 7 is connected in series at each electrode output end of the battery. When the output current of the battery is greater than the current value that the fuse 7 can withstand, the corresponding fuse 7 can be instantly fused, cutting off the current loop, and playing a role in the battery. The function of protection can effectively prevent the battery from overheating or even explosion due to over-discharge or instantaneous short circuit.

specific Embodiment approach 3

[0029] Specific embodiment three. This embodiment describes the power supply control circuit of the lithium-thionyl chloride battery described in specific embodiment one or two. The control circuit includes a primary control relay, a pre-discharge control relay, a simulated load, a Level control relay, battery power supply interface, equipment power supply output interface and control signal IO port, the power supply status signal input end of the control signal IO port is connected to the state signal output end of the first level control relay, and the power-off control signal output end of the control signal IO port Connect the power-off control signal input end of the primary control relay, the power transfer control signal output end of the control signal IO port is connected to the power transfer control signal input end of the primary control relay, the switch of the primary control relay and the secondary control relay It is connected in series between the power signal ...

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Abstract

The invention discloses a Li-SOCl2 battery and a power supply control circuit thereof and relates to the technical field of the safety of batteries. By the Li-SOCl2 battery, the problems of overheating, overdischarging and short circuit of the conventional Li-SOCl2 battery which realizes high-current discharging current density are solved. A shell of the Li-SOCl2 battery is a sealed shell; a plurality of Li-SOCl2 monomer batteries are fixed in the shell in a matrix arrangement manner; electrodes of all the Li-SOCl2 monomer batteries face the same direction; a plurality of output ends of the plurality of Li-SOCl2 monomer batteries which are connected in series with one another are connected to an output interface on the top of the shell; heat conduction silicone grease is filled between every two adjacent Li-SOCl2 monomer batteries and between each Li-SOCl2 monomer battery and the side wall of the shell; a thermistor is fixed between every two adjacent Li-SOCl2 monomer batteries; the thermistors are immersed in the heat conduction silicone grease; the signal output end of each thermistor is connected to the output interface.

Description

technical field [0001] The invention relates to the technical field of battery safety, in particular to a safety design method for a lithium-thionyl chloride battery with a large discharge current density. Background technique [0002] Lithium-Thionyl Chloride (Li / SOCl 2 ) battery has the highest specific energy among the currently realized chemical power sources, and its weight-specific energy is twice that of zinc-silver batteries, which shows that its weight and volume are much smaller under the condition of outputting the same energy. At the same time, it has the advantages of high working voltage and stable voltage output, and has the advantages of large capacity, small size and light weight. [0003] The batteries of this system have been applied at home and abroad. For example, in 1988, Altus company developed a 250Ah power type Li / SOCl for the US "Centaur-G" rocket system. 2 Battery. In the same year, the French SAFT company developed a power type Li / SOCl with a n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/50H01M2/34H02J7/00H01M10/613H01M10/637H01M10/6555
CPCY02E60/10
Inventor 董淑英李存洲薛健邓康钱顺友杨键敏
Owner BEIJING INST OF ELECTRONICS SYST ENG
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