US6064179A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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 09:29
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.
References Cited (Backward Citations)
US3909685A
Cited
US4424491A
Cited
US4418127A
Cited
US4484140A
Cited
US4513167A
Cited
US4675259A
Cited
US4879188A
Cited
US4885523A
Cited
US5563496A
Cited
US5130706A
Cited
US5302902A
Cited
US5304915A
Cited
US5767659A
Cited
US5694024A
Cited
US5534765A
Cited
US5539298A
Cited
US5455499A
Cited
US5635813A
Cited
US5503948A
Cited
US5581170A
Cited
US5652501A
Cited
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 |