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Intelligent quick charger of positive and negative pulse power battery and charging method thereof

A positive and negative pulse, fast charging technology, used in secondary battery charging/discharging, battery circuit devices, secondary battery repair/maintenance, etc., can solve the problems of low efficiency, slow charging speed, small battery discharge capacity, etc. Reduce the polarization reaction, solve the slow charging speed, and improve the effect of charging current acceptance rate

Inactive Publication Date: 2014-07-02
NORTHWESTERN POLYTECHNICAL UNIV
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AI Technical Summary

Problems solved by technology

[0005] In order to avoid the deficiencies of the prior art, the present invention proposes an intelligent positive and negative pulse power battery fast charger and a charging method. During the charging process, the charger can ) Adaptively adjust the pulse width and amplitude of the positive and negative pulses, reduce the battery polarization reaction, improve the charging current acceptance rate of the battery, and solve the shortcomings of the current power battery chargers such as slow charging speed, low efficiency, and small battery discharge capacity

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  • Intelligent quick charger of positive and negative pulse power battery and charging method thereof
  • Intelligent quick charger of positive and negative pulse power battery and charging method thereof

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Embodiment Construction

[0020] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:

[0021] The invention relates to a fast charger with positive pulse charging and negative pulse discharge. The charger intelligently adjusts the pulse width and amplitude of the positive and negative pulses according to the charging state of the battery to realize fast charging.

[0022] as attached figure 1 As shown, the charger includes: power factor correction circuit, full bridge power conversion circuit, high frequency transformer, rectification filter circuit, current voltage temperature detection circuit, negative pulse generation circuit, drive circuit, power management chip circuit, microprocessor control circuit, charging status display circuit.

[0023] The AC mains power is first sent to the power factor correction circuit. The power factor circuit adopts the BOOST topology to correct the input current to a sinusoidal current, which is in phase with t...

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Abstract

The invention provides an intelligent quick charger of a positive and negative pulse power battery and a charging method thereof. The quick charger capable of achieving positive pulse charging and negative pulse discharging can intelligently adjust the pulse width, the amplitude and the pulse width proportion of positive and negative pulses according to the charging state of the battery, the polarization reaction of the battery is reduced, the acceptance rate of charging currents of the battery is improved, and the defects that an existing power battery charger is low in charging speed, low in efficiency and small in battery discharging capacity are overcome.

Description

technical field [0001] The invention relates to a power battery charger, in particular to an intelligent fast charger for positive and negative pulse power batteries and a charging method. Background technique [0002] At present, there are mainly four charging methods for power battery chargers for electric bicycles and electric vehicles, namely: (1) constant current charging; (2) two-stage or three-stage charging; (3) constant voltage charging; (4) Pulse charging. When charging with the above charging method, the battery will produce ohmic polarization, concentration polarization and electrochemical polarization during the charging process, resulting in long charging time and low charging efficiency. In order to achieve the purpose of fast charging, the general charger takes measures to increase the charging current, so the internal resistance of the battery increases during the charging process, and the battery temperature rises too fast, which easily leads to permanent ...

Claims

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Application Information

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IPC IPC(8): H02J7/00H02J7/04H01M10/44
CPCY02E60/10
Inventor 高田羊彦景占荣
Owner NORTHWESTERN POLYTECHNICAL UNIV
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