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System and method for measuring electrical performance parameters of inactive state of thermal battery

An electrical performance, thermal battery technology, applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., can solve the problems of inability to obtain accurate measurements and high internal resistance of thermal batteries

Pending Publication Date: 2020-08-07
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] The technical problem to be solved by the present invention is that the thermal battery has a very high internal resistance in an unactivated state, and is usually used to judge key electrical parameters of battery performance and health status, such as open circuit voltage, maximum output current, current-voltage curve, DC resistance, impedance spectrum Such electrical parameters are far beyond the measurement range of commonly used battery testing instruments, and cannot be accurately measured

Method used

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  • System and method for measuring electrical performance parameters of inactive state of thermal battery
  • System and method for measuring electrical performance parameters of inactive state of thermal battery
  • System and method for measuring electrical performance parameters of inactive state of thermal battery

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Embodiment 1

[0058] Such as figure 1 As shown, the present invention is a system for measuring the electrical performance parameters of the thermal battery in the inactive state, including an impedance analyzer 8, an electrometer 9, a constant temperature box 15, and an electrical measurement fixture. The electrical measurement fixture is arranged in the constant temperature box 15. The electrical measurement fixture is electrically connected with the impedance analyzer 8 and the electrometer 9, and the shell of the electrical measurement fixture is grounded; it also includes a computer data acquisition and analysis device 10, and the computer data acquisition and analysis device 10 communicates with the impedance analyzer through a communication unit 8. The electrometers 9 are all connected;

[0059] The electrical measurement fixture is used to place the thermal battery 13 in it, and the electrical measurement fixture is used to shield the thermal battery 13 from the environmental noise ...

Embodiment 2

[0075] Such as figure 1 As shown, the difference between this embodiment and Embodiment 1 is that the thermostat 15 includes a temperature control module, and the temperature control module is connected to the computer data acquisition and analysis device 10 through a communication unit; There is a test hole through which all the test cables connected to the electrical measuring fixture and the electrometer or impedance analyzer are led out. The inner wall of the test hole is made of insulating ceramics, Teflon, glass or PTFE.

[0076] The temperature control module communicates with the computer data acquisition and analysis device through a USB or RS485 interface.

Embodiment 3

[0078] Such as figure 1 As shown, this embodiment provides a method for measuring electrical performance parameters in an inactive state of a thermal battery, a system for measuring electrical performance parameters in an inactive state of a thermal battery in Embodiment 1 or Embodiment 2 of the method, the method includes the following step:

[0079] S10, turn on the computer data acquisition and analysis device 10, the electrometer 9, the impedance analyzer 8, the incubator 15, and set the temperature of the incubator 15 to the target temperature T 0 , to preheat each measuring instrument for 10min to 30min;

[0080] S20, connect the triaxial connector 19 on the electrical measurement fixture and the triaxial connector 24 of the signal input terminal of the electrometer through the triaxial test cable, and connect the first BNC connector 20 on the electrical measurement fixture to the common terminal 25 of the electrometer Connect the second BNC connector 21 on the electri...

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Abstract

The invention discloses a system and a method for measuring electrical performance parameters of an inactive state of a thermal battery. The problem that a plurality of key electrical parameters generally used for judging the performance and the health state of the battery far exceed the measurement range of a common battery detection instrument and a detection method and cannot be accurately measured due to extremely high internal resistance of the thermal battery in an inactive state is solved. The system comprises an impedance analyzer, an electrometer, a constant temperature box, an electrical measurement clamp and a computer data acquisition and analysis device, and in the measurement method, through impedance matching, the environmental noise is suppressed, the temperature fluctuation is reduced, the active characteristics of the thermal battery are fully utilized, the measurement precision is improved, and the measurement range of the electrical parameters of the thermal batteryis expanded. According to the invention, accurate measurement of electrical performance parameters such as open-circuit voltage, output charge, maximum output current, a current-voltage curve, direct-current resistance, an impedance spectrum and capacitance of the thermal battery in an inactive state is realized, and a basis is provided for online detection and reliability evaluation of the thermal battery.

Description

technical field [0001] The invention relates to the technical field of thermal battery detection, in particular to a system and method for measuring electrical performance parameters of a thermal battery in an inactive state. Background technique [0002] The thermal battery is a primary storage battery that uses a two-element or multi-element molten salt solid solution as the electrolyte. Under normal conditions, the electrolyte is non-conductive, and the battery is in a non-working state. The salt quickly melts into an ionic conductor to realize the external output of electric energy. Thermal batteries have the characteristics of long storage life, high specific power, short activation time, high reliability, maintenance-free, and extreme environment resistance. They are widely used in various military or civilian equipment systems such as missiles, bombs, torpedoes, space detection, and emergency escape devices. . [0003] During the production, inspection and storage o...

Claims

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Application Information

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IPC IPC(8): G01R31/3842G01R31/389G01R31/392H01M6/36
CPCG01R31/3842G01R31/389G01R31/392H01M6/36
Inventor 张小强崔艳华陈伟李科刘效疆
Owner INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS