US5446365A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for controlling a battery car
Assignee: Toshiba Corp
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Filing: 1993-05-18
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Granted: 1995-08-29
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Expires: 2013-05-18
Abstract
Abstract A method of controlling a battery car in which a motor is driven by a battery and the battery is charged with regeneration power generated by deceleration torque comprises the steps of charging a large-capacitance capacitor connected in parallel with the battery and the motor while restricting a current flowing from the battery to the large-capacitance capacitor, when the voltage of the large-capacitance capacitor is lower than a first voltage, charging the battery to a preset voltage while restricting a current flowing from the large-capacitance capacitor to the battery, when a charging voltage of the large-capacitance capacitor is increased above a predetermined voltage by the regeneration power, and driving the motor with only the charge stored in the large-capacitance capacitor, when the voltage of the large-capacitance capacitor is at least a second voltage.
Inventors
- 👤 Yoshihito Nomura
- 👤 Koji Endo
- 👤 Chihiro Okado
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:39
CPC Classifications
B; B60; B60L; B60L7/00; B60L7/10; B60L7/12; B60L1/00; B60L1/02; B60L1/04; B60L1/06; B60L1/08; B60L50/00; B60L50/40; B60L50/50; B60L50/52; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/70; Y02T10/80; Y02T10/92; Y10; Y10S; Y10S320/00; Y10S320/34
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
148 words
A method of controlling a car in which a motor is driven by a battery and the battery is charged with regeneration power generated by deceleration torque, said method comprising the steps of: charging, using regeneration power, a large-capacitance capacitor connected in parallel with a motor driving unit for driving the motor and the battery while restricting a current flowing from the battery to the large-capacitance capacitor, when a voltage of the large-capacitance capacitor is lower than a first voltage; charging the battery to a preset voltage while restricting a current flowing from the large-capacitance capacitor to the battery, when a charging voltage of the large-capacitance capacitor is increased above a predetermined second voltage by the regeneration power; and driving the motor with only a charge stored in the large-capacitance capacitor, when the voltage of the large-capacitance capacitor is equal to or higher than the predetermined second voltage.
Claim 2
Independent Claim
148 words
A method of controlling a car in which a motor is driven by a battery and the battery is charged with regeneration power generated by deceleration torque, said method comprising the steps of: charging, using regeneration power, a large-capacitance capacitor connected in parallel with a motor driving unit for driving the motor and the battery while restricting a current flowing from the battery to the large-capacitance capacitor, when a voltage of the large-capacitance capacitor is lower than a first voltage; charging the battery to a preset voltage while restricting a current flowing from the large-capacitance capacitor to the battery, when a charging voltage of the large-capacitance capacitor is increased above a predetermined second voltage by the regeneration power; and driving the motor with only a charge stored in the large-capacitance capacitor, when the voltage of the large-capacitance capacitor is equal to or higher than the predetermined second voltage.
Claim 3
Dependent Claim
117 words
A control apparatus for controlling a car including a motor driven by a battery and a motor control means for charging the battery with regeneration power generated by deceleration torque of said motor, said apparatus comprising: a large-capacitance capacitor, connected in parallel with said motor control means and the battery, for supplying power to said motor control means; a first current control means, connected between said battery and said large-capacitance capacitor, for controlling a current flowing from said battery to said large-capacitance capacitor; and a second current control means, connected in series with said first current control means between said battery and said large-capacitance capacitor, for controlling a current flowing from said large-capacitance capacitor to said battery.
Claim 4
Dependent Claim
117 words
A control apparatus for controlling a car including a motor driven by a battery and a motor control means for charging the battery with regeneration power generated by deceleration torque of said motor, said apparatus comprising: a large-capacitance capacitor, connected in parallel with said motor control means and the battery, for supplying power to said motor control means; a first current control means, connected between said battery and said large-capacitance capacitor, for controlling a current flowing from said battery to said large-capacitance capacitor; and a second current control means, connected in series with said first current control means between said battery and said large-capacitance capacitor, for controlling a current flowing from said large-capacitance capacitor to said battery.
Claim 5
Dependent Claim
30 words
A control apparatus according to claim 2, further comprising a voltage control means for comparing a voltage of said battery with a reference voltage and for outputting a reference current.
Claim 6
Dependent Claim
81 words
A control apparatus according to claim 3, wherein said second current control means includes: a current control unit for producing an output on the basis of the current flowing from said large-capacitance capacitor to said battery and said reference current output from said voltage control means; and a switch element having two main circuits and a control terminal for controlling passage of a current flowing between said two main circuits on the basis of the output from said current control unit.
Claim 7
Dependent Claim
18 words
A control apparatus according to claim 2, wherein said large-capacitance capacitor is constituted by an electric double-layered capacitor.
Claim 8
Dependent Claim
75 words
A control apparatus according to claim 2, wherein said second current control means includes: a current control unit for producing an output on the basis of the current flowing from said battery to said large-capacitance capacitor and a reference current; and a switch element having two main circuits and a control terminal for controlling passage of a current flowing between said two main circuits on the basis of the output from the current control unit.
Claim 9
Dependent Claim
43 words
A control apparatus according to claim 6, further comprising a voltage control means for comparing a voltage of said large-capacitance capacitor with a preset second voltage and for outputting the reference current to said current control unit of said second current control means.
Claim 10
Dependent Claim
38 words
A control apparatus according to claim 2, wherein said car includes an internal combustion engine, and said motor is connected to said internal combustion engine of said car and adds an auxiliary torque to said internal combustion engine.
Claim 11
Dependent Claim
42 words
A control apparatus according to claim 2, further comprising a voltage control means for comparing a voltage of said large-capacitance capacitor with a preset voltage and for outputting a reference current to a current control unit of said second current control means.
Claim 12
Dependent Claim
79 words
A control apparatus according to claim 9, wherein said current control unit is for producing an output on the basis of the current flowing from said battery to said large-capacitance capacitor and said reference current; and wherein said second current control means further includes: a switch element having two main circuits and a control terminal for controlling passage of a current flowing between said two main circuits on the basis of the output from the current control unit; and
References Cited (Backward Citations)
US4054826A
Cited
CH633751A5
Cited
US4330742A
Cited
US4689531A
Cited
US5053632A
Cited
EP0280478A2
Cited
US4963811A
Cited
JPH0271072A
Cited
US5119010A
Cited
EP0418995A1
Cited
US5260637A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-08-28 | 1999-02-27 | 1999-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-08-28 | 2003-02-27 | 2003-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-08-28 | 2007-02-27 | 2007-08-29 | $7700.00 | Window Closed / Lapsed |