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Lithium battery constant current and constant voltage charging control method for solar power generation

A charging control method, constant current and constant voltage technology, which is applied in the field of solar cells, can solve the problems of uncommon control reliability, and achieve the effects of high cost performance, increased reliability, and improved utilization efficiency

Active Publication Date: 2018-02-06
中电科蓝天科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The domestic research on the software control algorithm of the battery is gradually becoming more and more perfect, but the research on the reliability of the control is rare

Method used

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  • Lithium battery constant current and constant voltage charging control method for solar power generation
  • Lithium battery constant current and constant voltage charging control method for solar power generation
  • Lithium battery constant current and constant voltage charging control method for solar power generation

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Embodiment Construction

[0026] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0027] The present invention takes the battery constant current and constant voltage charging of the satellite power supply system as an example. It should be emphasized that the charging control method involved in the present invention is by no means limited to satellite electronic systems, and is widely applicable to any electronic system that uses lithium batteries as energy storage power sources occasion.

[0028] Concrete technical content of the present invention is:

[0029] hardware section, see figure 1 , The power system consists of three-junction gallium arsenide solar cell array, lithium-ion battery pack, and power controller. The system topology adopts the BCDSR system topology that integrates charging, discharging and shunting...

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Abstract

The invention discloses a lithium battery constant-current constant-voltage charging control method for solar generating. The method comprises the following steps: step 101, initializing BEA signals to C; step 102, acquiring square-matrix currents, load currents and discharge currents; when the square-matrix currents are greater than the load currents, it being indicated that the solar generating is at an illumination stage, and accordingly executing step 1021; and when the square-matrix currents are not greater than the load currents and the discharge currents are greater than 2A, it being indicated that the solar generating is at an earth shadow stage, and accordingly executing step S1022; step 1021, first of all, charging a lithium battery by use of a constant-current charging mode, when voltages of the lithium battery reach a constant-voltage charging threshold, then successively decreasing the BEA signals by delta c for every time interval t, and finally, controlling charging currents of the lithium battery according to the BEA signals; and step 1022, successively decreasing the BEA signals by delta c for every time interval t, and then controlling the charging currents of the lithium battery according to the BEA signals.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a method for controlling constant current and constant voltage charging of lithium batteries for solar power generation. Background technique [0002] In my country, lithium-ion battery packs and their control and management systems have become current research hotspots. Lithium-ion battery represents the development direction of energy storage equipment. It has the advantages of light weight, small size, no memory effect, and wide temperature range. It is a substitute product for mainstream nickel-cadmium and nickel-hydrogen batteries. In the electric energy storage system using nickel-cadmium and nickel-hydrogen batteries, the constant current charging method is basically adopted. Due to the potential danger of overcharging and overdischarging of lithium batteries, choosing an appropriate and efficient charging method in combination with the characteristics of lithium-ion ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/35
CPCH02J7/35
Inventor 李见敏徐伟陈杏娜
Owner 中电科蓝天科技股份有限公司
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