US5498951A
Expired / Lapsed
US
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Method and apparatus for charging electric double layer capacitor
Assignee: NANTONG JIANGHAI CAPACITOR Co Ltd
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Filing: 1994-06-30
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Granted: 1996-03-12
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Expires: 2014-06-30
Abstract
Abstract Method and apparatus for quickly and efficiently charging an electric double layer capacitor. The capacitor is charged by a constant-current power supply which is preferably a current controlled output type switching power supply. To cause the voltage across the terminals of the capacitor to reach its working voltage in a short time, the capacitor is overcharged for a short time. Where the capacitor is charged with a solar battery, a constant-current output type switching regulator is interposed between the solar battery and the capacitor.
Inventors
- 👤 Michio Okamura
- 👤 Takeshi Morimoto
- 👤 Kazuya Hiratsuka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:18
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/34; H02J7/345; Y; Y02; Y02B; Y02B40/00; Y02E; Y02E60/00; Y02E60/10; Y02E60/13
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
24 words
A method of charging an electric double layer capacitor, comprising the step of: charging said electric double layer capacitor from a constant-current power supply.
Claim 2
Independent Claim
24 words
A method of charging an electric double layer capacitor, comprising the step of: charging said electric double layer capacitor from a constant-current power supply.
Claim 3
Independent Claim
26 words
An apparatus for charging an electric double layer capacitor, comprising: a current controlled output type switching DC power supply which charges said electric double layer capacitor.
Claim 4
Independent Claim
26 words
An apparatus for charging an electric double layer capacitor, comprising: a current controlled output type switching DC power supply which charges said electric double layer capacitor.
Claim 5
Independent Claim
63 words
An apparatus for charging an electric double layer capacitor, comprising: an electric power storage device to store electric energy from an external power line; and a DC/DC converter for converting output electric power from said electric power storage device into a substantially constant-current output, said storage device supplying said substantially constant-current output to said electric double layer capacitor which acts as a load.
Claim 6
Independent Claim
63 words
An apparatus for charging an electric double layer capacitor, comprising: an electric power storage device to store electric energy from an external power line; and a DC/DC converter for converting output electric power from said electric power storage device into a substantially constant-current output, said storage device supplying said substantially constant-current output to said electric double layer capacitor which acts as a load.
Claim 7
Dependent Claim
43 words
An apparatus for charging an electric double layer capacitor as set forth in claim 3, wherein said electric power storage device is controlled by a timer or a remote control signal and acting to store electric power during a predetermined period of time.
Claim 8
Dependent Claim
26 words
An apparatus for charging an electric double layer capacitor as set forth in claim 3 or 4, wherein said DC/DC converter is a switching constant-current converter.
Claim 9
Dependent Claim
40 words
A method of charging an electric double layer capacitor as set forth in claim 1, wherein said electric double layer capacitor is overcharged so that it is charged up to a preset voltage exceeding a working voltage of said capacitor.
Claim 10
Dependent Claim
30 words
A method of charging an electric double layer capacitor as set forth in claim 6, wherein said capacitor is overcharged by a constant current supplied from said constant-current power supply.
Claim 11
Dependent Claim
30 words
A method of charging an electric double layer capacitor as set forth in claim 6, wherein said capacitor is overcharged by a power supply other than said constant-current power supply.
Claim 12
Independent Claim
47 words
A method of charging an electric double layer capacitor as set forth in any one of claims 6 to 8, wherein said capacitor is overcharged by an amount of electricity substantially corresponding to an amount of electricity injected during relaxation charging of said electric double layer capacitor.
Claim 13
Independent Claim
49 words
A method of charging an electric double layer capacitor with a solar battery, comprising the steps of: preparing said solar battery; and placing a constant-current output switching regulator between said solar battery and said electric double layer capacitor to charge said capacitor with electric power from said solar battery.
Claim 14
Independent Claim
49 words
A method of charging an electric double layer capacitor with a solar battery, comprising the steps of: preparing said solar battery; and placing a constant-current output switching regulator between said solar battery and said electric double layer capacitor to charge said capacitor with electric power from said solar battery.
Claim 15
Dependent Claim
45 words
A method of charging an electric double layer capacitor with a solar battery as set forth in claim 10, wherein constant output current from said switching regulator is so controlled as to approach a current value at which said solar battery produces its maximum output.
References Cited (Backward Citations)
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| 3.5 Years (Year 4) | 1999-03-12 | 1999-09-11 | 2000-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-03-12 | 2003-09-11 | 2004-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-03-12 | 2007-09-11 | 2008-03-12 | $7700.00 | Window Closed / Lapsed |