Unlock instant, AI-driven research and patent intelligence for your innovation.

Phase shift full-bridge charger

A phase-shifting full-bridge, charger technology, used in current collectors, electric vehicles, electrical components, etc.

Inactive Publication Date: 2015-03-04
HEILONGJIANG ZHENMEI BROADCAST COMM EQUIP
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The charging method used by traditional chargers is mainly constant current or constant voltage charging. These charging methods are likely to cause overcharging or insufficient charging of the battery. The former shortens the service life of the battery to a certain extent, while the latter prolongs the battery life. charging time

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Phase shift full-bridge charger
  • Phase shift full-bridge charger

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] combine figure 1 , through the analysis and discussion of the working principle of the phase-shifted full-bridge circuit, it can be seen that it is impossible to ensure that the system is a voltage-stabilizing system only by using an open-loop system, because any slight disturbance may make the The system deviates from the original working point, which is the result we don't want to see. Therefore, in order to ensure the normal operation of the system, we need to provide corresponding and very strict control signals to control and adjust the driving signals generated by the driver, so that the power switch in the circuit can safely and reliably comply with our requirements for output voltage The corresponding phase shift angle. The circuit capable of generating such a control signal is the control circuit in the phase-shifted full-bridge converter circuit. Usually control circuits include sampling, comparison, reference source, oscillator, pulse width modulator (PW...

Embodiment 2

[0018] combine figure 2 , is the software flowchart of the charger based on the phase-shifted full bridge. At the beginning of the program, the system is initialized first, including clock configuration, I / O port configuration, interrupt priority management configuration, watchdog setting, timer configuration, and ADC setting. After that, AD samples and makes logical judgment. For a battery to be charged, the sampling voltage is lower than the set value at the beginning of charging, which is constant current charging. In the later stage of charging, when the sampling voltage is higher than the set value, it is constant voltage charging. If the voltage sensor detects that the voltage is abnormal, the controller turns off all the switch tubes.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a phase shift full-bridge charger, which mainly comprises a main circuit, a pre-rectification circuit, a DC / DC (direct current / direct current) phase shift full bridge, a post-rectification circuit, a control circuit, an STM32 minimum system, a filter circuit and a driving circuit. A control mode of the charger is implemented as follows: a stagewise equal-current charging method is adopted for a storage battery, the storage battery is charged with constant current, and when the voltage of the battery is detected by a sensor to be lower than a set value of 47 V, the battery is charged with constant current, so that the aims of remarkably shortening the charging time and prolonging the service life of the battery are fulfilled.

Description

technical field [0001] The invention relates to a device capable of charging a storage battery, specifically a charger based on a phase-shifted full bridge. In addition, the invention also relates to a control method applied to the charger. Background technique [0002] With the development of information technology, batteries have been widely used in daily life, such as communications, ships, automobiles, and various electronic products. Various types of storage batteries are widely used for their stable output voltage, reliable power supply, and good economic performance. The charging method used by traditional chargers is mainly constant current or constant voltage charging. These charging methods are likely to cause overcharging or insufficient charging of the battery. The former shortens the service life of the battery to a certain extent, while the latter prolongs the battery life. charging time. Therefore, if you change the charging scheme reasonably and use scienti...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
CPCH02J7/00711H02J7/045
Inventor 冯秀霞
Owner HEILONGJIANG ZHENMEI BROADCAST COMM EQUIP