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WEI Zhihao,WANG Chunfang.Lead-acid Battery Repairing Instrument with Superimposition of DC and Intermittent High-frequency Resonant Pulses[J].JOURNAL OF POWER SUPPLY,2018,16(5):119-123,129
Lead-acid Battery Repairing Instrument with Superimposition of DC and Intermittent High-frequency Resonant Pulses
Received:September 18, 2016  Revised:January 03, 2018
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DOI:10.13234/j.issn.2095-2805.2018.5.119
Keywords:lead-acid battery  vulcanization  repairing  high-frequency resonance
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WEI Zhihao College of Electrical Engineering, Qingdao University, Qingdao , China
WANG Chunfang College of Electrical Engineering, Qingdao University, Qingdao , China qduwcf@163.com
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Abstract:
      To repair the scrapped lead-acid batteries due to vulcanization, a lead-acid battery repairing instrument with superimposition of DC and intermittent high-frequency resonant pulses was designed. The repairing instrument's system circuit structure was given, and its working principle was introduced; the principle of repairing circuit with intermittent high-frequency pulse was elaborated in detail, and the state equation of the repairing circuit was formulated and analyzed; the control system was designed with the core of PIC16F887 microcontroller, and the characteristics of the controller were introduced; a voltage detection circuit and a current detection circuit were designed with the core of a linear optocoupler HCNR201, and a pulse width modulation(PWM) drive circuit was designed; considering that different sizes of lead sulfate crystals require different energy, a variable duty cycle control strategy was proposed. Experimental results showed that the designed lead-acid battery repairing instrument can satisfactorily restore the scrapped lead-acid batteries resulting from vulcanization, which meets the design requirement.
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