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Multi-stage battery module charging method and charging apparatus

A technology of a battery module and a charging method, which is applied to battery circuit devices, circuit devices, and energy-saving charging equipment, etc., can solve problems such as high battery temperature and reduced battery life.

Inactive Publication Date: 2013-05-08
GALLOPWIRE ENTERPRISE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method of staged constant current charging can solve the problem that the battery temperature is too high and the battery life is shortened due to the conventional charging up to the preset voltage in a short period of time.

Method used

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  • Multi-stage battery module charging method and charging apparatus
  • Multi-stage battery module charging method and charging apparatus
  • Multi-stage battery module charging method and charging apparatus

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Embodiment Construction

[0070] The implementation of the present invention will be described in more detail below in conjunction with the drawings and component symbols, so that those skilled in the art can implement it after studying this specification.

[0071] see figure 1 It is a flow chart of the steps of the multi-stage battery module charging method of the present invention. The method includes the following steps: charging the battery module at the first stage with a first preset current (step S10); judging whether the battery module has reached a preset voltage with a judging unit, and if the preset voltage has not been reached, then Continue charging with the first preset current until the preset voltage is reached (step S20); if it is judged that the preset voltage has been reached, charge the battery module at a second stage with a second preset current (step S30); The judging unit judges whether the battery module has reached the preset voltage, and if it has not reached the preset vol...

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Abstract

A multi-stage battery module charging method and a charging apparatus are discloses. The method comprises the following steps of: a, perform first-stage charge on a battery module with a first preset electric current; b, judging if the battery module achieves a preset voltage through a judgement unit; c, performing second-stage charge on the battery module with a second preset electric current, if the preset voltage is judged to be achieved; d, if the preset voltage is judged to be achieved again and a preset voltage difference among batteries or one of the batteries exceeds the preset voltage, performing third-stage charge with a third preset electric current aiming at the batteries with lower voltage; e, if the preset voltage is judged to be achieved again, performing constant-voltage charge on the battery module with the preset voltage and using the second preset electric current as an initial charging current till the battery module is charged full. By using the method, states of over-charge or partial-charge of parts of the batteries can be prevented during charge of the battery module, i.e., voltage can be stabilized, charging efficiency of the batteries can be promoted, and service life of the batteries can be prolonged.

Description

technical field [0001] The invention relates to a charging method and device for a battery module, which can adjust the current direction and charge a battery cell with a lower voltage. The multi-stage battery module charging method and device. Background technique [0002] The traditional charging of the battery module adopts multi-stage charging in the state of a single-string battery pack or a whole battery module. The first stage is constant current charging, and the second stage is constant voltage charging. Such as Figure 5 Shown is a schematic diagram of the state of charge of a conventional battery. The first stage of the battery (t=t 0 ~t 1 ) for constant current (I B ) charging, the curve (V PC ) represents the change of the battery module voltage. When the battery module voltage reaches the voltage provided by the appliance (V inc ), enter the second stage (t=t 1 ~t 2 ) constant voltage (V inc ) charge until the battery module is fully charged (t=t 2 )u...

Claims

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Application Information

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IPC IPC(8): H02J7/00
CPCY02E70/40Y02E60/10
Inventor 郑世仁曾志宏
Owner GALLOPWIRE ENTERPRISE
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