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A simple and efficient charging and discharging control circuit and its control method

A charge-discharge control and charge-discharge circuit technology, which is applied in the simple and efficient charge-discharge control circuit and its control field, can solve the problems of complex closed-loop control and high cost, and achieves good energy-saving effect, high power utilization rate and strong adaptability Effect

Active Publication Date: 2014-10-08
DONGGUAN GUANJIA ELECTRONICS EQUIP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Although this solution has a certain energy-saving effect, there is a prominent problem, that is, in order to control the voltage on the current-limiting transistor and the current-limiting resistor to a fixed value, complex closed-loop control is required, and the cost is high.

Method used

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  • A simple and efficient charging and discharging control circuit and its control method
  • A simple and efficient charging and discharging control circuit and its control method
  • A simple and efficient charging and discharging control circuit and its control method

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Embodiment Construction

[0031] During the use of battery charging and discharging equipment (such as formation and capacity dividing equipment), customers are generally allowed to set a lot of working parameters and end conditions to determine the charging and discharging speed and ensure that the battery will not be overcharged or overdischarged. Then let the customer set the upper and lower limit voltage of this type of battery, and then we can infer the maximum voltage and maximum current that may appear in the battery during the actual charging and discharging process. Such as:.

[0032] (1) "Constant current charging" mode:

[0033] Maximum current = set charging current, maximum voltage = set cut-off voltage;

[0034] (2) "Constant current and constant voltage charging" mode:

[0035] Maximum current = set charging current, maximum voltage = set charging voltage;

[0036] (3) "Constant power charging" mode:

[0037] Maximum current = set charging power / lower limit voltage of this type of ...

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Abstract

The invention discloses a simple and high-efficient charging and discharging control circuit, comprising a rectifier, a charging and discharging circuit, a battery, a parameter configuration device and a control unit, which are sequentially connected in series. The parameter configuration device is used for inputting control parameters, and the control unit is used for operating the control parameters and outputting a control signal to the rectifier so as to control direct current voltage outputted by the rectifier. The invention further discloses a control method of the charging and discharging control circuit. The control method comprises the following steps of: firstly inputting charging and discharging parameters through the parameter configuration device; calculating a maximum voltage value and a maximum current value of a charging circuit by the control unit so as to calculate a voltage value of the rectifier needing to be regulated and transmit a regulating signal to the rectifier; finally regulating outputted direct current voltage according to the regulation signal by the rectifier. The simple and high-efficient charging and discharging control circuit disclosed by the invention is simple, has strong applicability, can flexibly regulate the output voltage of the rectifier by aiming at different battery types to realize a purpose of reducing energy consumption and has the advantages of low product cost, high electric energy utilization rate and good energy saving effect.

Description

technical field [0001] The invention relates to a battery charging and discharging device, in particular to a simple and efficient charging and discharging control circuit and a control method thereof. Background technique [0002] In the process of battery production or use (such as battery formation and capacity division), charging and discharging circuits are often used. The charge and discharge circuit basically includes: a rectifier, a charging circuit, and a battery connected in series; the battery charge and discharge circuit may be but not limited to Figures 1 to 3 structure shown. Such as figure 1 As shown, the battery is single-connected to the discharge circuit, and the rectifier is responsible for converting the alternating current into a certain voltage of direct current, which is used as the input of the subsequent charging circuit to provide an energy source for the charging circuit. Such as figure 2 As shown, a discharge circuit is connected in series b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H02J7/02
Inventor 汪跃辉
Owner DONGGUAN GUANJIA ELECTRONICS EQUIP
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