Device for removing lead sulfate film formed in lead-acid battery

• US 20060065547A1
• Filed: 09/17/2003
• Published: 03/30/2006
• Est. Priority Date: 09/24/2002
• Status: Abandoned Application

• Current Assignee: Eruma Co., Ltd.
• Original Assignee: Eruma Co., Ltd.
• Inventors: Okuno, Shigeo
• Application Number:
  US10/528,909
• Publication Number:
  US 20060065547A1
• Time in Patent Office: Days
• US Class Current: 205/644
• CPC Class Codes: H01M 10/4242 Regeneration of electrolyte or reactants
• CPC Class Codes: H02J 7/0069 Charging or discharging for charge maintenance, battery initiation or rejuvenation
• CPC Class Codes: H02J 7/00711 with introduction of pulses during the charging process
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

This invention seeks to provide a novel device for removing membranous lead sulfate deposited on electrodes of a lead-acid battery by dissolving the lead sulfate into fine particles without causing the membranous lead sulfate to fall off or be suspended in the electrolytic solution, thus to recover the performance of the battery in a deteriorated state and prolong the battery life. This invention further seeks to provide a novel device for removing membranous lead sulfate deposit on the electrodes, which can emit little noise to the outside environment. To attain the objects as noted above according to the present invention, there is provided a device for removing membranous lead sulfate deposited on electrodes of the lead-acid battery due to sulfation by using a phenomenon bringing about a conductor skin effect of intensively dissolving the surface layer of the membranous lead sulfate deposited on the electrodes with the pulse current having a short pulse width, which device is attached to a lead-acid battery and provided with a voltage detector, reference voltage generator, voltage comparator, oscillator, amplifier, waveform shaping circuit, negative pulse generator, and electrfying indicator. The pulse width of the pulse current is preferably 1 μs or less.

Claims

1. A device for removing membranous lead sulfate deposited on electrodes of a lead-acid battery due to sulfation, comprising a voltage detector, reference voltage generator, voltage comparator, oscillator, amplifier, waveform shaping circuit, negative pulse generator, and electrifying indicator, in which a pulse current having a short pulse width is outputted from said device to bring about a conductor skin effect, thereby to intensively dissolve a surface layer part of said membranous lead sulfate deposit on said electrodes.

2. The device set forth in claim 1, wherein said pulse width is less than 1 μ

s.

3. The device set forth in claim 1, wherein said lead-acid battery to which said device is mounted is used as a power source of said device.

4. The device set forth in claim 2, wherein said lead-acid battery to which said device is mounted is used as a power source of said device.