US5225744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power unit for electric cars
Assignee: Aisin AW Co Ltd
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Filing: 1991-04-27
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Granted: 1993-07-06
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Expires: 2011-04-27
Abstract
Abstract Herein disclosed is a power unit for an electric car, which comprises: a first power supply mounted on the electric car and adapted to be always used; and a second power supply mounted on the electric car, if necessary. The first power supply may include a battery for effecting a travel of low speed and short distance by itself. The second power supply may include a battery module for effecting a travel of high speed and short distance and a generator module for effecting a travel of high speed and long distance.
Inventors
- 👤 Masami Ishikawa
- 👤 Yukihiro Minezawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:29
CPC Classifications
B; B60; B60K; B60K6/00; B60K6/20; B60K6/22; B60K6/32; B60K1/00; B60K6/42; B60K6/46; B60K6/50; B60K6/52; B60L; B60L50/00; B60L50/50; B60L50/60; B60L50/61; B60W; B60W10/00; B60W10/04; B60W10/08; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/62; Y02T10/70; Y02T10/7072; Y02T90/00; Y02T90/40; Y10; Y10S; Y10S903/00; Y10S903/902; Y10S903/903; Y10S903/904; Y10S903/908; Y10S903/915; Y10S903/916
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
A power unit for mounting on the body of an electric car, comprising: a sensor for detecting a running condition of the car; a first power supply mounted on the electric car body; a second power supply module; means for detachably mounting different, interchangeable types of said second power supply module on the electric car body; a motor control circuit, including a computer, connected to said first power supply and said second power supply module for feeding a current to a motor as commanded by the computer; said computer including control means for determining (1) whether said second power supply module is mounted or not and (2) for determining the type of second power supply module mounted; setting means for connecting said first power supply and said second power supply module with said motor control circuit, in parallel or in series, responsive to the detected running condition; and said computer controlling said motor control circuit according to determinations of said control means.
Claim 2
Dependent Claim
162 words
A power unit for mounting on the body of an electric car, comprising: a sensor for detecting a running condition of the car; a first power supply mounted on the electric car body; a second power supply module; means for detachably mounting different, interchangeable types of said second power supply module on the electric car body; a motor control circuit, including a computer, connected to said first power supply and said second power supply module for feeding a current to a motor as commanded by the computer; said computer including control means for determining (1) whether said second power supply module is mounted or not and (2) for determining the type of second power supply module mounted; setting means for connecting said first power supply and said second power supply module with said motor control circuit, in parallel or in series, responsive to the detected running condition; and said computer controlling said motor control circuit according to determinations of said control means.
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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) | 1996-07-05 | 1997-01-04 | 1997-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-05 | 2001-01-04 | 2001-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-05 | 2005-01-04 | 2005-07-06 | $7700.00 | Window Closed / Lapsed |