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A battery charging control method based on mppt control

A charging control method and charging control technology, which are applied to battery circuit devices, current collectors, electric vehicles, etc., can solve problems such as battery damage, achieve the effects of improving service life, simplifying circuit structure, and reducing peripheral devices

Inactive Publication Date: 2016-06-29
SHENZHEN JINGFUYUAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing charging control methods for batteries are mainly divided into voltage loop charging and current loop charging. These two methods may damage the battery to some extent.

Method used

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  • A battery charging control method based on mppt control
  • A battery charging control method based on mppt control

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific examples.

[0020] In the present invention, the charging state of the battery is judged by the central control unit by collecting the voltage of the battery, and at least one of the MPPT control loop, the current control loop and the voltage control loop in the charging controller is selected by the central control unit to participate in the calculation under different charging states, The charging control result is obtained by calculation, and the central control unit sends out PWM signals with different duty ratios in different charging states according to the charging control result of the charging controller, and adjusts the charging current or charging voltage in different charging stages through the DC-DC converter to charge the battery.

[0021] Such as figure 1 As shown, a DC-DC converter is connected to the output end of the photovoltaic array, and...

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Abstract

The invention discloses a storage battery charging control method based on MPPT (Maximum Power Point Tracking) control. The storage battery charging control method comprises the steps that a central control unit is used for judging the charging state of a storage battery by acquiring the voltage of the storage battery; the central control unit is used for selecting one of a MPPT control loop, an electric current control loop and a voltage control loop in a charge controller to calculate so as to obtain a charging control result at different charging states; the central control unit is used for transmitting PWM (Pulse-Width Modulation) signals with corresponding duty ratios at different charging states according to the charging control result of the charge controller, and the charging currents or the charging voltages at different charging stages are adjusted through a DC-DC (direct current-direct current) converter so as to realize the charging of the storage battery. The storage battery charging control method has the advantages that the charging intelligence is realized, the prolonging of the service life of the storage battery is facilitated, the central control unit is provided with various peripherals and has rapid data processing capacity, and peripheral devices of hardware are greatly reduced, and thus the structure of a charging control circuit is simplified, and the lowering of the control difficulty and the realization cost is facilitated.

Description

technical field [0001] The invention relates to battery charging technology, in particular to a battery charging control method based on MPPT control. Background technique [0002] As an important part of clean energy power generation, photovoltaic power generation has shown a vigorous development trend in recent years. Due to the characteristics of the working principle of solar cells - under the external environment (temperature, sunshine, angle, etc.) of the system, different array output voltages can obtain different output powers. Maximum Power Tracking (MPPT, MaximumPowerPointTracking) control. [0003] When charging a battery, people always want to charge it quickly without damaging the battery. The existing charging control methods for storage batteries are mainly divided into voltage loop charging and current loop charging, both of which may damage the storage battery to some extent. Contents of the invention [0004] Aiming at the deficiencies in the prior art...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00
Inventor 王刚陈恒留
Owner SHENZHEN JINGFUYUAN TECH
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