Charging method and circuit for chargeable battery

A technology of rechargeable batteries and charging methods, applied in battery circuit devices, secondary battery charging/discharging, circuit devices, etc., can solve the problems of chronic damage to contact points, damage to rechargeable batteries, affecting the effect of charging, etc., and increase the number of charging times. , The effect of preventing impact damage and prolonging service life

Inactive Publication Date: 2007-08-29
邹红钢
View PDF0 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. At the moment of starting to charge the rechargeable battery, the output of the charger is an inrush current or pulse current. Since the inrush current is suddenly added to the rechargeable battery in an instant, it is easy to cause damage to the rechargeable battery to a certain extent, thus shortening the charging time. battery life
[0005] 2. The inrush current generated at

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
  • Charging method and circuit for chargeable battery
  • Charging method and circuit for chargeable battery
  • Charging method and circuit for chargeable battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] Below in conjunction with accompanying drawing and embodiment the present invention is further elaborated:

[0037] In order to overcome the problem of inrush current in the prior art at the moment of charging the rechargeable battery, the charging current waveform used in the present invention mainly replaces the rising edge of the waveform with the current rising stage, which plays the role of buffering the charging current and reduces the charging moment. damage to the rechargeable battery caused by the impact of the impact, and at the same time, in order to improve the utilization rate of the charging electric energy, the charging current waveform of the present invention is also provided with a current stabilization stage to ensure that the electric energy with a large enough integral area is effectively used.

[0038] The charging method of the present invention at least comprises the following two steps:

[0039] 1. Current rising stage: By adjusting the duty cyc...

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

This invention relates to a charge method and a circuit for charge cells, in which, the method includes: controlling the output charged current to rise from zero to the peak value Im of the charge current in the specific time period t1 to t2 by adjusting the duty ratio of PWM control signal, and t1 and t2 are the beginning and ending time of the rising stage of the current, setting t the time as the X shaft, i the charge current as the Y shaft, keeping the peak value in the period of t2 to t3 to output charged current continuously, t3 is the ending time of the stable stage, the circuit includes a MCU process circuit and a current control circuit, and the MCU process circuit outputs PWM control signal of the monotony change of the duty ratio to the switch tube conversion circuit in the specific time period t1 to t2 and the output current of the current control conversion circuit rises to the peak value IM of the charge current.

Description

[technical field] [0001] The invention relates to a charging method and a charging circuit capable of prolonging the service life of a rechargeable battery. [Background technique] [0002] Because rechargeable batteries have the characteristics of being able to be used repeatedly, they have been widely used in portable electronic products, especially in mobile phones. Existing chargers, chargers and other products that charge rechargeable batteries, no matter what charging method is used, such as constant current, constant voltage, PWM multi-section constant charging, will have a great impact on the life of the rechargeable battery. Taking constant current and constant voltage as an example, when the rechargeable battery is over-discharged, the voltage of the rechargeable battery is very low. If the rechargeable battery is directly charged with constant current or constant voltage, it will seriously affect the performance of the rechargeable battery in all aspects, and then ...

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
IPC IPC(8): H01M10/44H02J7/00
CPCY02E60/10
Inventor 邹红钢
Owner 邹红钢
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap