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Charge and discharge control method for storage battery in independent photovoltaic system

A charge-discharge control, independent photovoltaic technology, applied in battery circuit devices, arrangement of multiple synchronous batteries, current collectors, etc., to achieve the effects of extending service life, improving state of charge, and improving characteristics

Inactive Publication Date: 2018-06-05
赵志刚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the charge and discharge management of batteries in small and medium-sized independent photovoltaic systems, there is currently no management system with a simple structure and an ideal control strategy

Method used

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  • Charge and discharge control method for storage battery in independent photovoltaic system
  • Charge and discharge control method for storage battery in independent photovoltaic system

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Embodiment Construction

[0015] specific implementation plan

[0016] The invention adopts a new charge control strategy to increase the charge of the storage battery. This strategy is implemented in two situations: first, when the battery is charged in a constant current or constant voltage mode, and the battery can accept the maximum power, the charging method for the battery remains the same. At this time, the conventional control method can be used to charge the battery: first, constant current, then constant voltage two-stage control mode; High-efficiency charging technology is used to improve the charging acceptance capacity of the battery, so that the battery can be charged quickly and the charge level of the battery can be improved.

[0017] Such as figure 1 As shown, in the process of battery charging, if the charging is suspended in real time and appropriate discharge pulses are properly added, various polarization voltages can be quickly and effectively eliminated, and the charging speed ...

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Abstract

The invention discloses a charge and discharge control method for a storage battery in an independent photovoltaic system. The charge and discharge control method comprises four parts including main charging control, grouped circularly charging during undercharge, maintenance charging and hardware structure application. The charge and discharge control method adopts an efficient charging technology to improve the charge acceptance of the storage battery, so that the storage battery is rapidly charged, and the state of charge of the storage battery is improved while the solar energy is fully utilized, thereby achieving the purpose of prolonging the service life of the storage battery in the photovoltaic system; meanwhile, the charge and discharge control method can avoid the storage batteryfrom being in a state of undercharge all the time, enables groups to reach a fully-charged state, and charges the different groups in this way circularly, thus the storage battery groups can be out of an all-along undercharge state, and the features of the storage battery can be improved.

Description

technical field [0001] The invention relates to a battery charge and discharge control method, in particular to a battery charge and discharge control method in an independent photovoltaic system. Background technique [0002] With the development of the world economy, human beings' demand for energy is increasing, and solar photovoltaic power generation is gradually being highly valued by countries all over the world. With the development of photovoltaic power generation technology, the photoelectric conversion efficiency has been continuously improved, the manufacturing cost of photovoltaic cells has been continuously reduced, and various new solar cells have come out one after another. However, the energy storage batteries used in photovoltaic power generation systems are basically not specially designed for photovoltaic systems. In addition, the operating status of batteries in photovoltaic systems is related to different external environments. In particular, improper co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
CPCH02J7/0013
Inventor 赵志刚
Owner 赵志刚
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