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1. WO2001056106 - METHOD OF REGENERATING LEAD STORAGE BATTERIES

Publication Number WO/2001/056106
Publication Date 02.08.2001
International Application No. PCT/JP2000/000321
International Filing Date 24.01.2000
IPC
H01M 10/42 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
H01M 10/54 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
54Reclaiming serviceable parts of waste accumulators
CPC
H01M 10/06
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
06Lead-acid accumulators
H01M 10/4242
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
4242Regeneration of electrolyte or reactants
H01M 10/44
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
44Methods for charging or discharging
H01M 10/54
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
54Reclaiming serviceable parts of waste accumulators
Y02E 60/10
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
60Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
10Energy storage using batteries
Y02W 30/84
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
30Technologies for solid waste management
50Reuse, recycling or recovery technologies
84Recycling of batteries or fuel cells
Applicants
  • T & K CO., LTD. [JP]/[JP] (AllExceptUS)
  • SUGIYAMA, Hideki [JP]/[JP]
  • KONDO, Toshihiko [JP]/[JP] (UsOnly)
Inventors
  • SUGIYAMA, Hideki
  • KONDO, Toshihiko
Agents
  • IKEDA, Haruyuki
Priority Data
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) METHOD OF REGENERATING LEAD STORAGE BATTERIES
(FR) PROCEDE DE REGENERATION D'ACCUMULATEURS AU PLOMB
Abstract
(EN) In a sulfation removal step (34), a dc pulse current flows from the positive electrode (18) to the negative electrode (20) of a lead storage battery, whereby the lead sulfate (PbSO4) deposited on the surface of the positive electrode (18) or the negative electrode (20) is reduced, while in an electrode activating step (40), a carbon suspension obtained by electrolytic oxidation of the carbon anode in an aqueous system is used as at least part of the electrolytic solution for the lead storage battery to cause the positive electrode (18) of the lead storage battery (10) to be activated by electrochemical doping. Thus, the sorting range of the used lead storage battery (10) is enlarged and even the used lead storage battery (10) having its electrolytic solution so reduced in specific gravity that it seems that sulfation has occurred, can be sufficiently restored to the extent of the capacity of a wide range of new lead storage batteries. Therefore, a wide range of used lead storage batteries can be regenerated.
(FR) Dans une étape (34) d'élimination de la sulfatation, un courant continu impulsionnel s'écoule de la cathode (18) à l'anode (20) d'un accumulateur au plomb. Le sulfate de plomb (PbSO4) déposé sur la surface de la cathode (18) ou de l'anode (20) est réduit, alors que dans une étape (40) d'activation d'électrode, une suspension de carbone obtenue par oxydation électrolytique de l'anode de carbone dans un système aqueux est utilisée comme une partie au moins de la solution électrolytique de l'accumulateur au plomb afin d'activer la cathode (18) de l'accumulateur au plomb (10) par dopage électrochimique. On dispose ainsi d'un plus grand choix d'accumulateurs au plomb usagés, et même l'accumulateur utilisé (10), dont la solution électrolytique ainsi réduite selon une gravité spécifique laissant penser que la sulfatation s'est produite, peut être largement recyclé jusqu'aux possibilités de nombreux accumulateurs au plomb de conception récente. On peut ainsi recycler une large gamme d'accumulateurs au plomb usagés.
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