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Control method for quickly charging battery

A technology of fast charging and control methods, which is applied to battery circuit devices, current collectors, electric vehicles, etc., to achieve the effects of easy implementation, simple method, and prolonged service life

Inactive Publication Date: 2008-11-05
NANJING VOCATIONAL UNIV OF IND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no such simple and effective control method on the market

Method used

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  • Control method for quickly charging battery
  • Control method for quickly charging battery

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Experimental program
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Embodiment Construction

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

[0020] attached figure 1 Shown is the block diagram of the circuit structure of the battery fast charging control system based on the principle of "DC charging measurement method". The control system includes: a controllable charging current circuit 1 , a current detection circuit 2 , a voltage detection circuit 3 , a temperature detection circuit 4 , a single chip computer 5 and a battery or a battery pack 6 . The controllable charging current circuit 1 provides charging current to the charged battery or battery pack 6 under the control of the single-chip computer 5; the current detection circuit 2 is used to measure and provide the adjusted charging current value to the single-chip computer 5; the voltage detection circuit 3 is used to It detects the instantaneous voltage at both ends of the battery or battery pack 6 and sends it to the single-chip compute...

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Abstract

The invention discloses a cell fast charge control method based on the theory of 'direct current charging measurement', including changing the charging current, to obtain the internal resistance size of cell through detecting the changing condition at the two end of the secondary battery or the battery; then realtime outputting the controlling quantity of the charging current according to the range of the internal resistance of the cell and the measured adjusting strategy; meanwhile determining end of the fast charge process according to that whether the surface temperature exceeds the set value or the battery charging voltage is present with minus delta U, to reach the object of safe, fast and high efficiency charging. The invention has simple realization and marked effect; the inventive charger can effectively prolong the service life of the secondary cell and advance the availability of the secondary cell.

Description

technical field [0001] The invention relates to a fast charging control method for a secondary battery that uses a "direct current charging measurement method" to detect and judge the change state of the internal resistance of a secondary battery to realize safe and fast charging. Specifically, it is a battery fast charging control method based on the principle of "DC charging measurement method". Background technique [0002] With the popularization of portable electronic products and electric vehicles, the role of secondary batteries that provide them with electrical energy has changed from a "supporting role" in the past to a "key" component. At the same time, due to the continuous use of these products and tools, the application of safe and fast charging technology for secondary batteries is becoming more and more important. However, the fast charging modes currently used have certain limitations. Especially when the internal resistance of some secondary batteries that...

Claims

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Application Information

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IPC IPC(8): H02J7/00H02J7/04
Inventor 曹建平江国栋
Owner NANJING VOCATIONAL UNIV OF IND TECH
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