Screening method for lithium-ion storage battery

Abstract

The invention discloses a screening method for a lithium-ion storage battery, belongs to the field of satellite power supply and aims to solve the problem that the production cost of a storage battery in an existing Pina satellite power supply subsystem is high. The method comprises the following steps: step (1) testing physical characteristics of all to-be-screened lithium-ion storage batteries to obtain the size and quality of the storage batteries, and weeding out the storage batteries of which the total run-out value is abnormal; step (2) testing electrochemical characteristics, and measuring open-circuit voltage; step (3) obtaining charging capacity and discharging capacity; step (4) performing a vibration test, comparing the vibration test with the last measurement, and weeding out the storage batteries of which the open-circuit voltage is abnormal or the charging and discharging capacity changes are abnormal; step (5) performing a vacuum leakage rate test, comparing the vacuum leakage rate test with the last measurement, weeding out the storage batteries of which the total run-out value, quality changes, charging and discharging capacity changes or open-circuit voltage changes are abnormal, and taking the rest lithium-ion storage batteries as the lithium-ion storage batteries obtained after screening. The storage batteries screened by the method disclosed by the invention are applied to the Pina satellite power supply subsystems.

Description

technical field [0001] The invention belongs to the field of satellite power supply. Background technique [0002] Pina satellites are a direction for the development of aerospace technology. Compared with other types of satellites, Pina satellites have the characteristics of short design and development cycle, low cost, easy modularization and mass production, and easy management, which is conducive to the development of new technologies. On-orbit test verification. At present, a large number of scientific research institutions and universities are conducting research on Pina satellites, and a large number of Pina satellites have successfully flown in orbit. [0003] The power supply system of the satellite is one of the important core systems of the satellite. It is responsible for the important task of supplying power to the entire satellite and is the lifeline of the satellite. For Pina satellites, the power system must have the characteristics of high reliability, hig...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the invention is to solve the problem of high production cost of storage batteries in the existing Pina satellite power supply subsystem. The invention provides a screening method for lithium-ion storage batteries

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