Fast charging system for battery based on PWM feedback control
A fast charging and feedback control technology, applied in different battery charging, battery circuit devices, current collectors, etc., can solve the problems of charging efficiency decline, affecting battery life, safety and reliability, etc., to achieve life guarantee, high safety and reliability , The effect of simple system structure
Inactive Publication Date: 2018-05-08
HEFEI ZHENGMEI POWER SUPPLY TECH
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Problems solved by technology
The capacity of the battery has been greatly supplemented after using high-current constant charging, and the battery's own acceptance has been limited to a certain extent. When charging again with the same voltage constant charging, the charging efficiency will decrease, and on the other hand, it will also affect the battery capacity. Battery life and safety and reliability
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[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0017] see Figure 1-3 , a battery fast charging system based on PWM feedback control, including a microcontroller controller 1, a relay alarm unit 2, a switching power supply 3, a PWM drive unit 4, a thyristor on-off control unit 5, a battery 6, a voltage and current acquisition unit 7, and an ADC Conversion unit 8, communication unit 9, the single-chip controller 1 is connected to the relay alarm unit 2, the single-chip controller 1 is used for monitoring th...
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The invention discloses a fast charging system for a battery based on PWM feedback control, which comprises a single chip microcomputer controller, a relay alarm unit, a switching power supply, a PWMdriving unit, a thyristor on-off control unit, a battery, a voltage and current acquisition unit, an ADC conversion unit and a communication unit. The system realizes fast charging of the battery by means of feedback control of PWM waves. The system changes the duty cycle of the PWM waves continuously by real-time monitoring on the battery charging process for variable voltage intermittent charging, that is, voltage is kept unchanged at the beginning of the charging, constant voltage with one grade reduced is used for charging after charging for a period of time, the best charging effects whenthe charging current is gradually reduced are achieved, the system has a simple structure, state monitoring on the battery can be carried out in real time, the safety and the reliability are high, and the service life is ensured to a certain degree.
Description
technical field [0001] The invention relates to the technical field of PWM charging, in particular to a battery fast charging system based on PWM feedback control. Background technique [0002] Battery is an important energy device widely used in various industrial places. It has large capacity and low price, but unreasonable battery management technology and charging and discharging mode lead to shortened battery life and reduced use efficiency. The traditional charging mode mainly adopts constant voltage, constant current and other modes. However, any charging system that uses a fixed current or voltage has a very limited scope of application, and is even only suitable for one stage of a battery. At the same time, most of these fast charging technologies use traditional control methods and ideas. From the perspective of several indicators for evaluating the performance of fast charging technologies (that is, the length of charging time, charging efficiency, temperature r...
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Login to View More IPC IPC(8): H02J7/00
CPCH02J7/0047H02J7/00711
Inventor 赵雨
Owner HEFEI ZHENGMEI POWER SUPPLY TECH