Space storage battery monomer voltage high-precision sampling integrated module

Abstract

The invention relates to a space storage battery monomer voltage high-precision sampling integrated module. Each function unit comprises a storage battery monomer voltage sampling unit and a storage battery monomer voltage sampling compensation following unit, which are packaged in the sampling integrated module, and a storage battery monomer voltage sampling compensation unit, which is arranged outside the sampling integrated module. The storage battery monomer voltage sampling compensation following unit is used for realizing impedance matching when a sampling voltage of the storage batterymonomer voltage sampling unit is subjected to error compensation; and the storage battery monomer voltage sampling compensation unit carries out positive and negative compensation on the sampling voltage through an external working voltage. The space storage battery monomer voltage high-precision sampling integrated module realizes high-precision sampling of monomer voltage under a high common-mode voltage based on an INA148 chip; error compensation pins can realize correction of sampling precision through external compensation, thereby meeting requirement for high-precision equalization management of a space high-voltage lithium ion storage battery group; and through design and flexible combination of 4 or 7 paths of space high-precision sampling integrated modules based on thick-film technology, common sampling requirements of a space power source at preset are met.

Description

technical field [0001] The invention relates to a high-integration sampling technology for an aerospace power supply lithium-ion storage battery energy storage system in the space field, in particular to an integrated module for high-precision sampling of the voltage of a battery cell used in space. Background technique [0002] Space exploration is the frontier field of scientific and technological development in the world today, and it is highly fundamental, forward-looking, innovative and driving. Human space activities can generally be divided into three major fields: earth application satellites, manned spaceflight and deep space exploration. Carrying out space activities is an inevitable choice for the development of space technology. and evolution, necessary means to gain more scientific understanding. [0003] As one of the important subsystems of the space vehicle, the power supply subsystem will provide the energy source required for the vehicle to perform test ve...

AI Technical Summary

Problems solved by technology

Lithium-ion series battery cells are connected in series to form a battery pack. Although strict process control such as screening can ensure good consistency of lithium-ion batteries, considering the self-discharge effect of the battery itself, load discharge characteristics and repeated cycle use requirements, making high The unbalanced voltage of single cells will inevitably occur during the use of power lithium-ion battery packs. If no effective measures are taken, this unbalanced degree will deteriorate sharply. Therefore, it is of great significance for the balanced management of high-voltage battery packs for space

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