A three-stage charge control device and method for a highly reliable lithium-ion battery

A lithium-ion battery, charging control technology, applied in battery circuit devices, circuit devices, current collectors, etc., can solve the problems of battery burning or explosion, insecurity, etc., to prevent overcharge and overtemperature, improve control accuracy, Achieve the effect of charging protection

Active Publication Date: 2021-04-13
SHANGHAI INST OF SPACE POWER SOURCES
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  • Summary
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Problems solved by technology

However, due to the characteristics of the lithium-ion battery itself, if there is no restriction or wrong operation, there will be certain unsafety in the battery charging process, which may seriously cause the battery to burn or explode. Therefore, it is necessary to strictly control the charging process of the lithium-ion battery. Increase the service life of lithium-ion batteries, thereby improving the reliability of spacecraft equipment

Method used

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  • A three-stage charge control device and method for a highly reliable lithium-ion battery
  • A three-stage charge control device and method for a highly reliable lithium-ion battery

Examples

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Embodiment

[0045] The lithium-ion battery consists of 6 lithium-ion battery cells connected in series.

[0046] The first acquisition circuit 1 uses a high-precision battery acquisition chip to acquire 6 monomer voltages, battery pack voltages and 2 lithium battery temperatures, where the battery pack voltage acquisition uses an operational amplifier for differential proportional conversion, and the lithium battery temperature acquisition uses 2 The temperature sensor MF501 converts the temperature into a voltage.

[0047] The second acquisition circuit 2 converts the voltage of the battery pack into a voltage signal of 0V-5V by means of proportional voltage division.

[0048] The first stage charging control circuit is a software control circuit, with 8-bit single-chip microcomputer 80C32 as the control core, to judge the battery charging status of the battery pack voltage, battery cell voltage, battery temperature and other parameters collected by the battery acquisition chip in real t...

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Abstract

A highly reliable lithium-ion battery three-stage charging control device and method, including a first acquisition circuit 1, a second acquisition circuit 2, a first-stage charging control circuit, a second-stage charging control circuit, a third-stage charging control circuit, and the like. The invention implements charging protection for the space lithium ion battery through a three-stage charging control circuit, effectively prevents the risk of overcharging and overheating of the battery, and improves the reliability and service life of the battery.

Description

technical field [0001] The invention relates to a highly reliable lithium-ion battery three-stage charging control device and method, belonging to the technical field of space-use lithium-ion battery charging control. Background technique [0002] With a series of significant advantages such as high specific energy, high working voltage, low self-discharge rate, and long cycle life, lithium-ion batteries have gradually become the third-generation space energy storage power supply replacing nickel-cadmium batteries and nickel-hydrogen batteries. However, due to the characteristics of the lithium-ion battery itself, if there is no restriction or wrong operation, there will be certain unsafety in the battery charging process, which may seriously cause the battery to burn or explode. Therefore, it is necessary to strictly control the charging process of the lithium-ion battery. Improve the service life of lithium-ion batteries, thereby increasing the reliability of spacecraft eq...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00
CPCH02J7/0029
Inventor 陈彦如吉裕晖涂浡屈诚志马季军王柳沈冰冰刘聪
Owner SHANGHAI INST OF SPACE POWER SOURCES
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