Patent US6064179A successfully refreshed from Google Patents.
US6064179A
Expired / Lapsed
US
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Battery set structure and charge/discharge control apparatus for lithium-ion battery
Assignee: Toshiba Corp
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Filing: 1999-02-25
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Granted: 2000-05-16
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Expires: 2019-02-25
Abstract
Abstract A battery charge circuit using a constant voltage/constant current to power charge a plurality of battery packs, a current detection circuit to detect a charge current according to a predetermined value, and control mechanisms to maintain a constant voltage charge mode when the charge current value drops below a set value within the battery pack.
Inventors
- 👤 Hironori Ito
- 👤 Shigeru Sekine
- 👤 Masahiko Kasashima
- 👤 Hisao Tsukazawa
- 👤 Yuichiro Hino
- 👤 Shizuo Morioka
- 👤 Nobuyuki Hosoya
- 👤 Yoshiaki Ukiya
- 👤 Katsuo Ozawa
- 👤 Hirohito Motomiya
- 👤 Masaru Harashima
- 👤 Masahiko Hagiwara
- 👤 Masanori Morita
- 👤 Akihiko Uchida
- 👤 Naoki Tashiro
- 👤 Masayasu Tanaka
- 👤 Keiichi Mitsui
- 👤 Naoki Isooka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:52
CPC Classifications
G; G01; G01R; G01R19/00; G01R19/165; G01R19/16533; G01R19/16538; G01R19/16542; G01R31/00; G01R31/36; G01R31/396; H; H01; H01M; H01M10/00; H01M10/42; H01M10/48; H01M50/00; H01M50/50; H01M50/569; H02; H02J; H02J7/00; H02J7/40; H02J7/44; H02J7/485; H02J7/50; H02J7/575; H02J7/80; H02J7/82; H02J7/825; H02J7/84; H02J7/855; H02J7/90; H02J7/96; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
164 words
A charge circuit capable of simultaneously mounting a plurality of battery packs each using a lithium secondary battery cell or a battery set thereof, comprising: a constant voltage/constant current power supply for applying a charge power supply voltage to the battery pack; a current detection circuit for detecting a charge current of the battery pack; a regulation circuit for controlling the charge current to a predetermined value; and control means for shifting a charge mode of the battery pack to a constant voltage charge mode when the charge current of the battery pack, which is supplied from the constant voltage/constant current power supply during a constant charge operation, becomes smaller than a set value, and charging remaining battery packs with a constant current within a charge current control range by the regulation circuit, thereby, before the battery pack during the charge operation is set in a full charge state, charging the remaining battery packs within the charge current control range by the regulation circuit.
Claim 2
Dependent Claim
164 words
A charge circuit capable of simultaneously mounting a plurality of battery packs each using a lithium secondary battery cell or a battery set thereof, comprising: a constant voltage/constant current power supply for applying a charge power supply voltage to the battery pack; a current detection circuit for detecting a charge current of the battery pack; a regulation circuit for controlling the charge current to a predetermined value; and control means for shifting a charge mode of the battery pack to a constant voltage charge mode when the charge current of the battery pack, which is supplied from the constant voltage/constant current power supply during a constant charge operation, becomes smaller than a set value, and charging remaining battery packs with a constant current within a charge current control range by the regulation circuit, thereby, before the battery pack during the charge operation is set in a full charge state, charging the remaining battery packs within the charge current control range by the regulation circuit.
Claim 3
Dependent Claim
16 words
The charge circuit according to claim 1, wherein the regulation circuit comprises a series regulation circuit.
Claim 4
Dependent Claim
16 words
The charge circuit according to claim 1, wherein the regulation circuit comprises a switching regulation circuit.
Claim 5
Dependent Claim
19 words
The charge circuit according to claim 1, further comprising means for setting a charge priority of the battery packs.
Claim 6
Dependent Claim
195 words
A charge circuit capable of simultaneously mounting a plurality of battery packs each using a lithium secondary battery cell or a battery set thereof, comprising: means for setting a charge priority of the battery packs; a constant voltage/constant current power supply for applying a charge power supply voltage to the battery pack selected in accordance with the priority; a current detection circuit for detecting a charge current of the battery pack; a series regulation circuit for controlling the charge current to a predetermined value; and control means for shifting a charge mode of the battery pack to a constant voltage charge mode when the charge current of the battery pack, which is supplied from the constant voltage/constant current power supply during a constant charge operation, becomes smaller than a set value, and charging a next battery pack according to the charge priority with a constant current within a charge current control range by the series regulation circuit, wherein, before the battery pack during the charge operation is set in a full charge state, the next battery pack according to the set priority is charged within the charge current control range by the series regulation circuit.
Claim 7
Dependent Claim
195 words
A charge circuit capable of simultaneously mounting a plurality of battery packs each using a lithium secondary battery cell or a battery set thereof, comprising: means for setting a charge priority of the battery packs; a constant voltage/constant current power supply for applying a charge power supply voltage to the battery pack selected in accordance with the priority; a current detection circuit for detecting a charge current of the battery pack; a series regulation circuit for controlling the charge current to a predetermined value; and control means for shifting a charge mode of the battery pack to a constant voltage charge mode when the charge current of the battery pack, which is supplied from the constant voltage/constant current power supply during a constant charge operation, becomes smaller than a set value, and charging a next battery pack according to the charge priority with a constant current within a charge current control range by the series regulation circuit, wherein, before the battery pack during the charge operation is set in a full charge state, the next battery pack according to the set priority is charged within the charge current control range by the series regulation circuit.
Claim 8
Dependent Claim
195 words
A charge circuit capable of simultaneously mounting a plurality of battery packs each using a lithium secondary battery cell or a battery set thereof, comprising: means for setting a charge priority of the battery packs; a constant voltage/constant current power supply for applying a charge power supply voltage to the battery pack selected in accordance with the priority; a current detection circuit for detecting a charge current of the battery pack; a switching regulation circuit for controlling the charge current to a predetermined value; and control means for shifting a charge mode of the battery pack to a constant voltage charge mode when the charge current of the battery pack, which is supplied from the constant voltage/constant current power supply during a constant charge operation, becomes smaller than a set value, and charging a next battery pack according to the charge priority with a constant current within a charge current control range by the switching regulation circuit, wherein, before the battery pack during the charge operation is set in a full charge state, the next battery pack according to the set priority is charged within the charge current control range by the switching regulation circuit.
Claim 9
Dependent Claim
195 words
A charge circuit capable of simultaneously mounting a plurality of battery packs each using a lithium secondary battery cell or a battery set thereof, comprising: means for setting a charge priority of the battery packs; a constant voltage/constant current power supply for applying a charge power supply voltage to the battery pack selected in accordance with the priority; a current detection circuit for detecting a charge current of the battery pack; a switching regulation circuit for controlling the charge current to a predetermined value; and control means for shifting a charge mode of the battery pack to a constant voltage charge mode when the charge current of the battery pack, which is supplied from the constant voltage/constant current power supply during a constant charge operation, becomes smaller than a set value, and charging a next battery pack according to the charge priority with a constant current within a charge current control range by the switching regulation circuit, wherein, before the battery pack during the charge operation is set in a full charge state, the next battery pack according to the set priority is charged within the charge current control range by the switching regulation circuit.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-05-16 | 2003-11-15 | 2004-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-05-16 | 2007-11-15 | 2008-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-05-16 | 2011-11-15 | 2012-05-16 | $7700.00 | Window Closed / Lapsed |