Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – Having variable number of cells or batteries in series
Patent
1993-04-02
1998-07-21
Tso, Edward
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
Having variable number of cells or batteries in series
320167, H01M 1046
Patent
active
057839280
ABSTRACT:
A long-lived, lightweight, and quickly and precisely charged storage capacitor power supply capable of stably supplying electric power to a load. The power supply has a capacitor block consisting of capacitors connected in series, in parallel or in any combination of series and parallel. The power supply further includes a charging circuit for charging the block, a charging power supply connected with the block via the charging circuit, and a charge-limiting circuit. This charge-limiting circuit detects the voltage across the terminals of the block and limits charging of the block if the voltage reaches a given value. One embodiment of the invention further includes a charge-limiting circuit, a full charge-detecting circuit, and a residual electricity-detecting circuit connected in parallel with the block. The charge-limiting circuit senses that the voltage across the terminals of the block exceeds the given value and causes the charging current to bypass the block. The full charge-detecting circuit senses that the charge-limiting circuit is operated and determines that full charge is attained. The residual electricity-detecting circuit finds the residual electric power from the voltage across the terminals of the block. Another embodiment has a first and a second capacitor block. The voltage across the terminals of the first block is detected. The first block is charged from the second block until the detected voltage reaches a given voltage. The first block supplies electric power directly to the load.
REFERENCES:
patent: 4303877 (1981-12-01), Meinhold
patent: 4709200 (1987-11-01), Ochiai
patent: 5256956 (1993-10-01), Tsuchiya et al.
M.F. Rose "Performance Characteristics of Large Surface Area Chemical Double Layer Capacitors", Proc. Int. Power Sources Symp., vol. 33, pp. 572-592, 1988.
Communication from the European Patent Office enclosing the European Search Report for Application No. EP 93 30 2233 enclosing: EP-A-0 410 559; EP-A-0 101 017; Patent Abstracts of Japan, vol. 16, No. 472 (E-1272) 30 Sep. 1992 and JP-A-04 168 939, 17 Jun. 1992 *abstract*; Soviet Inventions Illustrated Week 7915, 23 May 1979, Derwent Publications Ltd., London, GB; AN 79-D2705B.
Bomko `supply system for pulse gas-discharge lamp with control voltage limiter and inductance capacitance network energy measuring system to reduce charging current interval` and SU-A-608 274 (Bomko A.G.) 17 May 1978 *abstract* and WO-A-92 07371.
Jeol Ltd.
Tso Edward
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