US5796175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power supply control device for electric vehicle
Assignee: Honda Motor Co Ltd
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Filing: 1996-07-30
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Granted: 1998-08-18
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Expires: 2016-07-30
Abstract
Abstract A backup power supply 11 is not loaded by peripheral equipment 9 and a low-voltage battery 5. A switch controller 12 is energized by any of the backup power supply 11, the DC/DC converter 7, and the low-voltage battery 5 for controlling the energization of a relay 3L. When the power supply from the DC/DC converter 7 and the low-voltage battery 5 to the switch controller 12 is declined, it is complemented by the backup power of a low voltage from the backup power supply 11. Accordingly, the switch controller 12 is always energized with a sufficient level of the power supply regardless of the residual storage of the low-voltage battery 5.
Inventors
- 👤 Hisahiro Itoh
- 👤 Tomoyuki Itoh
- 👤 Koji Furumoto
- 👤 Shinji Yoshikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:58
CPC Classifications
H; H02; H02J; H02J9/00; H02J9/04; H02J9/06; B; B60; B60L; B60L3/00; B60L3/0023; B60L50/00; B60L50/50; B60L50/51; B60L2210/00; B60L2210/10; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/70; Y02T10/72
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
147 words
A power supply control device for an electric vehicle, comprising: a voltage converter means connected through a main switch to a high-voltage battery; a drive motor energized by the high-voltage battery; a low-voltage battery and vehicle periphery equipment both connected to the voltage converter means for receiving a power supply; a switch controlling means, connected to at least one of the voltage converter means and the low-voltage battery, for receiving a power supply and for controlling the opening and closing actions of the main switch; and a means for supplementally supplying a backup power to the switch controlling means so that the switch controlling means is energized with enough power to ensure a normal operation of the switch controlling means, wherein said switch controlling means receives a sum of voltage outputs of said voltage converter means, said low-voltage battery and said means for supplying said backup power.
Claim 2
Dependent Claim
147 words
A power supply control device for an electric vehicle, comprising: a voltage converter means connected through a main switch to a high-voltage battery; a drive motor energized by the high-voltage battery; a low-voltage battery and vehicle periphery equipment both connected to the voltage converter means for receiving a power supply; a switch controlling means, connected to at least one of the voltage converter means and the low-voltage battery, for receiving a power supply and for controlling the opening and closing actions of the main switch; and a means for supplementally supplying a backup power to the switch controlling means so that the switch controlling means is energized with enough power to ensure a normal operation of the switch controlling means, wherein said switch controlling means receives a sum of voltage outputs of said voltage converter means, said low-voltage battery and said means for supplying said backup power.
Claim 3
Dependent Claim
24 words
A power supply control device according to claim 1, wherein the backup power is not supplied to the low-voltage battery and vehicle periphery equipment.
Claim 4
Dependent Claim
82 words
A power supply control device according to claim 1, wherein the voltage converter means comprises: a voltage converter unit for converting the output voltage of the high-voltage battery to a drive voltage for vehicle periphery equipment; a sub power source for converting the output voltage of the high-voltage battery to a voltage suitable for actuating the voltage converter unit, in which a part of the output of the sub power source is supplied as the backup power to the switch controlling means.
Claim 5
Dependent Claim
29 words
A power supply control device according to claim 3, further comprising a means for producing an alarm when the output of the sub power source exceeds a predetermined level.
Claim 6
Dependent Claim
36 words
A power supply control device according to claim 1, wherein the backup power supplying means is a sub voltage converter means for lowering and delivering the output of the high-voltage battery supplied through the main switch.
Claim 7
Dependent Claim
37 words
A power supply control device according to claim 1, wherein the backup power supplying means is a subcharge storage means connected in parallel to the low-voltage battery and charged with the output of the voltage converter means.
Claim 8
Dependent Claim
53 words
A power supply control device according to claim 6, further comprising a charging line extending from the voltage converter means to the backup power supplying means; and a power supply line extending from the backup power supplying means to the switch controlling means, the charging line being different from the power supply line.
Claim 9
Dependent Claim
75 words
A power supply control device according to claim 1, wherein the switch controlling means comprises: a first supply line for transmitting the power from the voltage converter means and the low-voltage battery to a relay means of the main switch; a second supply line for transmitting the backup power to the relay means of the main switch, and a controller unit for controlling the power supply along both the supply lines to the relay means.
Claim 10
Dependent Claim
33 words
A power supply control device according to claim 8, further comprising a third supply line for transmitting the backup power to the controller unit for ensuring the normal operation of the controller unit.
References Cited (Backward Citations)
US5510658A
Cited
US5569966A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-08-17 | 2002-02-16 | 2002-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-08-17 | 2006-02-16 | 2006-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-08-17 | 2010-02-16 | 2010-08-18 | $7700.00 | Window Closed / Lapsed |