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Patent US5550445A successfully refreshed from Google Patents.
US5550445A
Expired / Lapsed
US
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Generator controller and controlling method for hybrid vehicle
Assignee: Toyota Motor Corp
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Filing: 1994-09-08
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Granted: 1996-08-27
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Expires: 2014-09-08
Abstract
Abstract A generator controller and controlling method of a hybrid vehicle. A battery voltage is compared with a predetermined value and when the battery voltage is lower than the predetermined value as a result of the comparison, an state of charge of the battery is discriminated. In the case of an state of charge of at least 70%, a generator output is controlled on the basis of a motor output, and in the case of an state of charge of less than 70%, while the generator output is controlled to a relatively high value, the motor output is limited. When the state of charge is restored to more than 75%, the voltage is controlled depending on the motor output. In the case of at least the predetermined value of the battery voltage, an idle control of an engine is carried out. As a result, the state of charge of the battery can be ensured and overcharging of the battery can be prevented.
Inventors
- 👤 Yoshihide Nii
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:30
CPC Classifications
B; B60; B60L; B60L58/00; B60L58/10; B60L58/12; B60L58/13; B60K; B60K6/00; B60K6/20; B60K6/42; B60K6/46; B60L15/00; B60L15/20; B60L15/2045; B60L3/00; B60L3/0023; B60L3/0046; B60L50/00; B60L50/50; B60L50/60; B60L50/61; B60L58/15; B60L7/00; B60L7/10; B60L7/14; B60W; B60W10/00; B60W10/04; B60W10/06; B60W10/08; B60W10/24; B60W10/26; B60W20/00; B60W20/10; B60W20/13; H; H02; H02J; H02J7/00; H02J7/14; H02J7/1415; B60L2210/00; B60L2210/30; B60L2210/40; B60L2240/00; B60L2240/10; B60L2240/12; B60L2240/14; B60L2240/40; B60L2240/42; B60L2240/421; B60L2240/423; B60L2240/427; B60L2240/429; B60L2240/54; B60L2240/547; B60L2270/00; B60L2270/10; B60L2270/14; B60L2270/145; B60W2510/00; B60W2510/24; B60W2510/242; B60W2510/244; B60W2710/00; B60W2710/06; B60W2710/0644; B60W2710/065; B60W2710/08; B60W2710/086; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/62; Y02T10/64; Y02T10/70; Y02T10/7072; Y02T10/72; Y10; Y10S; Y10S903/00; Y10S903/902; Y10S903/903
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
142 words
A generator controller for controlling an operation of a generator mounted on a hybrid vehicle, said hydrid vehicle including a battery for supplying electric power to a motor, the generator for supplying electric power to the motor and the battery, and an engine for driving the generator, comprising: means for detecting a heavy load state in which a battery charge state is reduced to less than a predetermined value; means for carrying out an increase control of an output of the generator and for limiting an output of the motor so that, when the heavy load state is detected, the generator output is used, for a certain period, to charge the battery, and means for either stopping or avoiding the increase control of the generator output and the output limitation of the motor when at least heavy load state is not detected.
Claim 2
Dependent Claim
142 words
A generator controller for controlling an operation of a generator mounted on a hybrid vehicle, said hydrid vehicle including a battery for supplying electric power to a motor, the generator for supplying electric power to the motor and the battery, and an engine for driving the generator, comprising: means for detecting a heavy load state in which a battery charge state is reduced to less than a predetermined value; means for carrying out an increase control of an output of the generator and for limiting an output of the motor so that, when the heavy load state is detected, the generator output is used, for a certain period, to charge the battery, and means for either stopping or avoiding the increase control of the generator output and the output limitation of the motor when at least heavy load state is not detected.
Claim 3
Dependent Claim
92 words
The generator controller of claim 1, further comprising: means for detecting the battery charge reaching at least a predetermined level as voltage increased condition, which exists when the battery voltage becomes at least a predetermined voltage; means for carrying out an idle control of the engine and a generation stop control of the generator when the voltage increased condition is detected; and means for either stopping or avoiding the idle control of the engine and the generation stop control of the generator when at least the voltage increased condition is not detected.
Claim 4
Dependent Claim
59 words
The generator controller of claim 2, further comprising: means for gradually decreasing the output of the generator to a predetermined value when at least the idle control of the engine and the generation stop control of the generator are executed; and means for gradually increasing the output of the generator to an equivalent value required for the motor output.
Claim 5
Dependent Claim
41 words
The generator controller of claim 2, further comprising means for either stopping or avoiding the idle control of the engine and the generation stop control of the generator only when the voltage increase state continues for a predetermined time of period.
Claim 6
Dependent Claim
29 words
The generator controller of claim 2, wherein the idle control of the engine and the generation stop control of the generator are maintained for at least a predetermined time.
Claim 7
Dependent Claim
55 words
The generator controller of claim 1, further comprising: means for detecting the output of the motor; and means for flattening the detected motor output and controlling the output of the generator on the basis of a value obtained by adding a limitation, corresponding to a generation output range of the generator, to the motor output.
Claim 8
Dependent Claim
55 words
The generator controller of claim 2, further comprising: means for detecting the output of the motor; and means for flattening the detected motor output and controlling the output of the generator on the basis of a value obtained by adding a limitation, corresponding to a generation output range of the generator, to the motor output.
Claim 9
Dependent Claim
55 words
The generator controller of claim 3, further comprising: means for detecting the output of the motor; and means for flattening the detected motor output and controlling the output of the generator on the basis of a value obtained by adding a limitation, corresponding to a generation output range of the generator, to the motor output.
Claim 10
Dependent Claim
13 words
The generator controller of claim 8, wherein the flattening is executed by integrating.
Claim 11
Dependent Claim
24 words
The generator controller of claim 8, further comprising means for multiplying the detected motor output by a factor considering efficiency prior to the flattening.
Claim 12
Dependent Claim
50 words
The generator controller of claim 1, further comprising means for carrying out a limitation control of the output of the generator when the charge state of the battery becomes at least a predetermined value owing to the increase control of the generator output and the output limitation of the motor.
Claim 13
Dependent Claim
53 words
The generator controller of claim 1, further comprising means for controlling the output of the generator depending on the charge state of the battery when the charge state of the battery becomes at least a predetermined value owing to the increase control of the generator output and the output limitation of the motor.
Claim 14
Dependent Claim
144 words
A generator controlling method for controlling an operation of a generator, executed on a hybrid vehicle including a battery for supplying electric power to a motor, the generator for supplying electric power to the motor and the battery, and an engine for driving the generator, comprising: a step for detecting a heavy load state in which a battery charge state is reduced to less than a predetermined value; a step for carrying out an increase control of an output of the generator and for limiting an output of the motor so that, when the heavy load state is detected, the generator output is used, for a certain period, for charging the battery; and a step for either stopping or avoiding the increase control of the generator output and the output limitation of the motor when at least the heavy load state is not detected.
Claim 15
Dependent Claim
144 words
A generator controlling method for controlling an operation of a generator, executed on a hybrid vehicle including a battery for supplying electric power to a motor, the generator for supplying electric power to the motor and the battery, and an engine for driving the generator, comprising: a step for detecting a heavy load state in which a battery charge state is reduced to less than a predetermined value; a step for carrying out an increase control of an output of the generator and for limiting an output of the motor so that, when the heavy load state is detected, the generator output is used, for a certain period, for charging the battery; and a step for either stopping or avoiding the increase control of the generator output and the output limitation of the motor when at least the heavy load state is not detected.
Claim 16
Dependent Claim
96 words
The generator controlling method of claim 13, further comprising: a step for detecting the battery charge reaching at least a predetermined level as voltage increased condition, which exists when the battery voltage becomes at least a predetermined voltage; a step for carrying out an idle control of the engine and a generation stop control of the generator when the voltage increased condition is detected; and a step for either stopping or avoiding the idle control of the engine and the generation stop control of the generator when at least the voltage increased condition is not detected.
Claim 17
Dependent Claim
60 words
The generator controlling method of claim 14, further comprising: a step for gradually decreasing the output of the generator to a predetermined value when the idle control of the engine and the generation stop control of the generator are executed; and a step for gradually increasing the output of the generator to an equivalent value required for the motor output.
Claim 18
Dependent Claim
58 words
The generator controlling method of claim 13, further comprising: a step for detecting the output of the motor; and a step for flattening the detected motor output and controlling the output of the generator on the basis of a value obtained by adding a limitation corresponding to a generation output range of the generator to the motor output.
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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) | 1999-08-27 | 2000-02-26 | 2000-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-08-27 | 2004-02-26 | 2004-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-08-27 | 2008-02-26 | 2008-08-27 | $7700.00 | Window Closed / Lapsed |