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Lithium battery control system in non-regulated bus mode

A technology of control system and adjustment method, which is used in battery circuit devices, current collectors, electric vehicles, etc.

Active Publication Date: 2013-09-25
SHANGHAI INST OF SPACE POWER SOURCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing lithium battery control system cannot meet the higher performance requirements

Method used

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  • Lithium battery control system in non-regulated bus mode
  • Lithium battery control system in non-regulated bus mode
  • Lithium battery control system in non-regulated bus mode

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Embodiment Construction

[0034] In order to describe the technical content, structural features, achieved goals and effects of the present invention in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.

[0035] The embodiment of the present invention is applicable to the power supply control system of micro-satellite load. Taking the solar cell array as the constant current source as an example, the working process of the lithium battery control system in the non-regulated busbar mode of the present invention is as follows: when the output power of the solar cell array When there is a surplus, the output energy of the solar cell array first supplies power to the load, the excess energy charges the lithium battery, and then the excess energy is shunted.

[0036] see figure 1 , the lithium battery control system of a kind of busbar non-adjusting mode described in the present invention is provided with two-way shunt charging circuit to carry ...

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Abstract

The invention discloses a lithium battery control system in a non-regulated bus mode. A signal processing circuit receives bus voltage and maximum monomer voltage of a battery cell in a lithium-ion battery pack so as to output a first voltage; a bus voltage processing circuit receives the bus voltage to output a second voltage; for a first pulse width modulation (PWM) circuit, a third voltage generated by a reference voltage and the second voltage is compared with a triangular wave to generate a PWM signal; for a second PWM circuit, a fourth voltage generated by the reference voltage and the first voltage is compared with the triangular wave to generate a PWM signal; on / off of a switching circuit is controlled through a corresponding PWM signal, so that a corresponding solar cell array is controlled to output current so as to shunt over the ground; a discharge switch performs discharge switch on the lithium-ion battery pack. The system is simple and reliable in structure, can supply power to a load and charge the lithium-ion battery and is not excessively charged and not shunted by excessive power of the solar cell array.

Description

technical field [0001] The invention relates to a lithium battery control system in a non-regulated busbar mode, which is used in a micro satellite power supply control system. Background technique [0002] Due to the characteristics of high energy density, wide operating temperature range, low self-discharge rate, no memory effect, long charge and discharge life, and no pollution, lithium-ion battery packs have become a new generation of energy storage power for space, which is very suitable for the development of space power. It is increasingly applied to microsatellites. At the same time, in recent years, microsatellites have put forward the goals of high performance, light weight and small volume for the power supply subsystem. Therefore, improving the performance ratio and performance-price ratio of the power supply subsystem is of great significance to increasing the payload, improving satellite performance and efficiency. However, the existing lithium battery contro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
Inventor 周明中陶建秋瞿炜烨张平卫芬
Owner SHANGHAI INST OF SPACE POWER SOURCES