US5801514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Charging-and-discharging control device, a battery pack, and an electronic apparatus with improved charge and discarge control
Assignee: Cypress Semiconductor Corp
•
Filing: 1997-01-17
•
Granted: 1998-09-01
•
Expires: 2017-01-17
Abstract
Abstract A charging-and-discharging device in an electronic apparatus includes a rechargeable battery and a charging device for charging the battery. The charging-and-discharging device includes a switching circuit electrically isolating one terminal side of the battery from a ground side of the electronic apparatus. The charging-and-discharging device further includes a charge control section controlling the isolating of the one terminal side of the battery from the ground side of the electronic apparatus by turning off the switching circuit during charging of the battery. In the charging-and-discharging device, the one terminal side of the battery is isolated from the ground side of the electronic apparatus by the switching circuit during charging of the battery and a closed loop including the charging device and the battery is established to charge the battery.
Inventors
- 👤 Mituo Saeki
- 👤 Hidetoshi Yano
- 👤 Hidekiyo Ozawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:51
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/42; H01M10/425; H01M10/44; H01M10/441; H01M10/46; H02; H02J; H02J7/00; H02J7/02; H02J7/40; H02J7/44; H02J7/485; H02J7/50; H02J7/575; H02J7/60; H02J7/62; H02J7/63; H02J7/64; H02J7/663; H02J7/865; H02J7/90; H02J7/92; H02J2207/00; H02J2207/20; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
111 words
A charging-and-discharging control device in a battery pack having a rechargeable battery, said charging-and-discharging control device comprising: a switching circuit preventing over discharge of the battery; a control section controlling to turn off said switching circuit when the over discharge of the battery is detected; and an input terminal which receives a control signal to control said switching circuit externally of the battery pack; wherein said control section turns off said switching circuit to stop discharging in two cases, a first case being when the over discharge of the battery is detected and a second case being when the control signal for stopping the discharging is applied to said input terminal.
Claim 2
Dependent Claim
111 words
A charging-and-discharging control device in a battery pack having a rechargeable battery, said charging-and-discharging control device comprising: a switching circuit preventing over discharge of the battery; a control section controlling to turn off said switching circuit when the over discharge of the battery is detected; and an input terminal which receives a control signal to control said switching circuit externally of the battery pack; wherein said control section turns off said switching circuit to stop discharging in two cases, a first case being when the over discharge of the battery is detected and a second case being when the control signal for stopping the discharging is applied to said input terminal.
Claim 3
Dependent Claim
107 words
A battery pack comprising: a rechargeable battery; and a charging-and-discharging control device including: a switching circuit preventing over discharge of the battery; a control section controlling to turn off said switching circuit when the over discharge of the battery is detected; and an input terminal which receives a control signal to control said switching circuit externally of the battery pack; wherein said control section turns off said switching circuit to stop discharging in two cases, a first case being when the over discharge of the battery is detected and a second case being when the control signal for stopping the discharging is applied to said input terminal.
Claim 4
Dependent Claim
107 words
A battery pack comprising: a rechargeable battery; and a charging-and-discharging control device including: a switching circuit preventing over discharge of the battery; a control section controlling to turn off said switching circuit when the over discharge of the battery is detected; and an input terminal which receives a control signal to control said switching circuit externally of the battery pack; wherein said control section turns off said switching circuit to stop discharging in two cases, a first case being when the over discharge of the battery is detected and a second case being when the control signal for stopping the discharging is applied to said input terminal.
Claim 5
Dependent Claim
157 words
An electronic apparatus operating with a battery comprising: a battery pack supplying power from the battery, said battery pack including: a rechargeable battery; and a charging-and-discharging control device having: a switching circuit preventing over discharge of the battery; a control section controlling said switching circuit to turn off when the over discharge of the battery is detected; and an input terminal for receiving a control signal to control said switching circuit externally of the battery pack; wherein said control section turns off said switching circuit to stop discharging in two cases, a first case being when the over discharge of the battery is detected and a second case being when the control signal for stopping the discharging is applied to said input terminal; power consuming circuits provided with said power of the battery from the battery pack; and a control circuit producing the control signal for stopping the discharging to said input terminal of the battery pack.
Claim 6
Dependent Claim
157 words
An electronic apparatus operating with a battery comprising: a battery pack supplying power from the battery, said battery pack including: a rechargeable battery; and a charging-and-discharging control device having: a switching circuit preventing over discharge of the battery; a control section controlling said switching circuit to turn off when the over discharge of the battery is detected; and an input terminal for receiving a control signal to control said switching circuit externally of the battery pack; wherein said control section turns off said switching circuit to stop discharging in two cases, a first case being when the over discharge of the battery is detected and a second case being when the control signal for stopping the discharging is applied to said input terminal; power consuming circuits provided with said power of the battery from the battery pack; and a control circuit producing the control signal for stopping the discharging to said input terminal of the battery pack.
References Cited (Backward Citations)
GB1034694A
Cited
GB1285191A
Cited
GB1437888A
Cited
US4132942A
Cited
GB1551655A
Cited
GB2010607A
Cited
EP0069640A1
Cited
JPS58144542A
Cited
US4433277A
Cited
GB2156611A
Cited
JPS61154432A
Cited
JPH01238437A
Cited
JPH0219912A
Cited
JPH02303328A
Cited
JPH04275031A
Cited
GB2254203A
Cited
GB2255243A
Cited
US5304915A
Cited
EP0512340A1
Cited
US5547775A
Cited
US5264777A
Cited
GB2265056A
Cited
WO1993005560A1
Cited
US5218285A
Cited
US5254930A
Cited
EP0621649A1
Cited
US5397974A
Cited
WO1995000992A1
Cited
US5477130A
Cited
GB2279802A
Cited
EP0662745A1
Cited
EP0665628A2
Cited
US5617010A
Cited
US5526215A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-08-31 | 2002-03-02 | 2002-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-08-31 | 2006-03-02 | 2006-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-08-31 | 2010-03-02 | 2010-09-01 | $7700.00 | Window Closed / Lapsed |