前苏联专利SU841615A3 Method of charging alkaline nickel-cadmium accumulator

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专利摘要:
A method for precharging the negative electrode of a nickel-cadmium alkaline storage cell whose electrodes are assembled in an at least partially discharged state, wherein before the first charge of the cell, a calculated quantity of a material is introduced in the cell, such material being irreversibly oxidizable in an alkaline medium at a potential such that it is anodically oxidized before nickel hydroxide without evolving any gas, then the cell is charged in the normal way. The material preferably is an organic material of the general formula CxHyOz; most preferably where x=n, y=2n+2, and z=1, with n less than 4. This particular class of materials comprises the three saturated mono-alcohols: methanol, ethanol and propanol.
公开号:SU841615A3
申请号:SU782687699
申请日:1978-11-24
公开日:1981-06-23
发明作者:Боннатер Раймон
申请人:Сосьете Дез Аккюмюлятер Фиксэ Де Траксьон (Фирма)；
IPC主号:

专利说明:

laziness of methanol is as follows
in the following way:
3Cd (OH) i. + + 2Cd +
+.,
The metallic cadmium thus formed is a pre-charged cadmium.
After the methanol has been consumed, the classic charging reaction of the accumulator is normal.
Example. They assemble several sets of hermetic nickel-cadmium batteries with a nominal capacity of 6.5 each.
Standard Kit: A negative battery whose electrode receives no pre-charge.
Set 1: battery, the negative electrode of which is pre-charged electrochemically before installing the electrodes in the amount of 100 mAh.
Target 2: battery is analog, pre-charge is 200 mAh.
Kit 3: The battery is similar, the pre-charge is 300 mAh.
The battery pack, the negative electrode of which does not receive any pre-charge prior to installation, but 20 mg of methanol is added to the electrolyte, which corresponds to a preliminary charge of 100 mAh.
Kit M: The battery is similar, 40 mg of methanol is added to the electrolyte, which corresponds to a preliminary charge of 200 mAh.
Kit M: the battery is similar, 60 mg of methanol is added to the electrolyte, which corresponds to a preliminary charge of 300 mAh.
These batteries are tested in cycles, each consisting of and charging at 50 mA, for 14 hours, immediately followed by a terminal discharge, a different 0.9 V.
In tab. 1 shows the capacitance values of various batteries.
Table
as can be seen from the table. 1, the battery charge preheater significantly increases the cycle capacity: since the third cycle, the standard battery has a capacity of 322 mAh instead of the nominal capacity of 500 mAh
The capacity remains the higher, - the larger the value of the preliminary charge, since during cycles of the type of slow charge - fast charge there is an intensive swelling and an increase in cadmium particles. Thus, pre-discharge plays the role of a cadmium reserve,
55 capable of discharging.
The pre-charge efficiency E is determined from the difference between the capacity of the pre-charged battery and the battery capacity Q of the torus without pre-charge divided by the value of the used pre-charge.
The efficiency value E is shown as a percentage of 65 in the table. 2
table 2

权利要求:
Claims (1)
[1]
Claim
The method of charging an alkaline nickel-cadmium battery by installing at least partially discharged electrodes in the battery and supplying a charging current with a negative electrode of a larger capacity than a positive one, informs that in order to simplify the technology , before applying the charging current to the battery, a compound is introduced that is irreversibly oxidized in an alkaline medium without gas separation at the anodic oxidation potential below the anodic oxidation potential of nickel hydroxide — methanol, ethanol, or propanol.

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同族专利:

公开号 | 公开日

LU80594A1|1979-06-15|

DE2851463B2|1980-11-06|

DE2851463A1|1979-06-07|

SE7812183L|1979-06-06|

ES475591A1|1979-04-01|

IT7829991D0|1978-11-21|

YU269778A|1983-01-21|

BE872078A|1979-05-17|

IT1100491B|1985-09-28|

GB2009489A|1979-06-13|

ZA786797B|1979-10-31|

HU178346B|1982-04-28|

JPS5486734A|1979-07-10|

FR2410883A1|1979-06-29|

GB2009489B|1982-07-07|

JPS5832473B2|1983-07-13|

CH627587A5|1982-01-15|

HK15283A|1983-05-13|

RO72610A|1981-06-30|

SG64382G|1983-09-16|

NL7811424A|1979-06-07|

DE2851463C3|1981-10-01|

IN150037B|1982-07-03|

SE430636B|1983-11-28|

YU41321B|1987-02-28|

US4166886A|1979-09-04|

CA1114895A|1981-12-22|

FR2410883B1|1980-08-22|

引用文献:

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

US2899480A|1959-08-11|Other |

LU30409A1|1949-11-22|

FR1286515A|1961-04-20|1962-03-02|Yardney International Corp|Electrolytic mixture for electrochemical battery|

FR2115704A5|1970-11-30|1972-07-07|Accumulateurs Fixes|

DE2156554C3|1971-11-15|1975-05-28|Varta Batterie Ag, 3000 Hannover|Process for the production of a gas-tight sealed alkaline accumulator|

DE2507988A1|1975-02-25|1976-08-26|Varta Batterie|PROCESS FOR THE PRODUCTION OF A NEGATIVE ELECTRODE CONTAINING A DISCHARGE RESERVE FOR GAS-PROOF ALKALINE ACCUMULATORS|

US3986893A|1975-11-28|1976-10-19|Motorola, Inc.|Method for making nickel and cadmium electrodes for batteries|DE2943101A1|1979-10-25|1981-05-07|Varta Batterie Ag, 3000 Hannover|METHOD FOR PRODUCING NEGATIVE SINTER FILM ELECTRODES|

DE3026073C2|1980-07-10|1988-10-27|Varta Batterie Ag, 3000 Hannover, De|

DE3416817A1|1984-05-07|1985-11-07|Varta Batterie Ag, 3000 Hannover|METHOD FOR PRODUCING A GAS-TIGHTLY SEALED ALKALINE ACCUMULATOR|

US4621034A|1984-07-31|1986-11-04|Kabushiki Kaisha Toshiba|Sealed metal oxide-hydrogen storage cell|

US5985457A|1997-02-10|1999-11-16|Dofasco Inc.|Structural panel with kraft paper core between metal skins|

US6171705B1|1997-02-10|2001-01-09|Dofasco, Inc.|Structural panel and method of manufacture|

WO2011026977A1|2009-09-07|2011-03-10|Basf Se|Composite molded part, in particular for furniture construction|

法律状态:

优先权:

申请号 | 申请日 | 专利标题

FR7736500A|FR2410883B1|1977-12-05|1977-12-05|

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