Patent US6344732B2 successfully refreshed from Google Patents.
US6344732B2
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Electric energy charging control apparatus and method for hybrid vehicle
Assignee: Toyota Motor Corp
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Filing: 2001-03-13
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Granted: 2002-02-05
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Expires: 2021-03-13
Abstract
Abstract A controller predicts a requested state of charge/discharge corresponding to a future run of a hybrid vehicle. If it is predicted that the hybrid vehicle will be stopped and restarted, or will be greatly accelerated and therefore that a request for a great discharge will be outputted in the future, the controller increases a target SOC of an HV battery to increase the value to which the charge of the HV battery will be converged in preparation for the great discharge. If it is predicted that a great regenerative electric power will be generated by a vehicle deceleration and therefore that a request for charging will be outputted, the target SOC is reduced, and the amount of charge in the HV battery is reduced, so that the regenerative power generated can be efficiency recovered.
Inventors
- 👤 Naoto Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:19
CPC Classifications
B; B60; B60L; B60L58/00; B60L58/10; B60L58/12; B60K; B60K6/00; B60K6/20; B60K6/42; B60K6/48; B60L15/00; B60L15/20; B60L15/2045; B60L50/00; B60L50/10; B60L50/16; B60L50/50; B60L50/60; B60L50/61; B60W; B60W10/00; B60W10/04; B60W10/08; B60W10/24; B60W10/26; B60W20/00; B60W20/10; B60W50/00; B60W50/0097; B60L2240/00; B60L2240/60; B60L2240/66; B60L2240/662; B60W2510/00; B60W2510/24; B60W2510/242; B60W2510/244; B60W2510/30; B60W2510/305; B60W2520/00; B60W2520/10; B60W2530/00; B60W2555/00; B60W2555/20; B60W2710/00; B60W2710/24; B60W2710/242; B60W2710/244; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/62; Y02T10/64; Y02T10/70; Y02T10/7072; Y02T10/72; Y02T90/00; Y02T90/10; Y02T90/16; Y10; Y10S; Y10S903/00; Y10S903/902; Y10S903/903
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
87 words
An electric energy charging control apparatus of a hybrid vehicle having an internal combustion engine, a motor-generator capable of assisting running of the vehicle and an electric energy storage device connected to the motor-generator, the control apparatus comprising a controller that: predicts a future state of a charge/discharge of the electric energy storage device; and changes a target value of charge of the electric energy storage device based on a result of the prediction regarding the future state of the charge/discharge of the electric energy storage device.
Claim 2
Dependent Claim
87 words
An electric energy charging control apparatus of a hybrid vehicle having an internal combustion engine, a motor-generator capable of assisting running of the vehicle and an electric energy storage device connected to the motor-generator, the control apparatus comprising a controller that: predicts a future state of a charge/discharge of the electric energy storage device; and changes a target value of charge of the electric energy storage device based on a result of the prediction regarding the future state of the charge/discharge of the electric energy storage device.
Claim 3
Dependent Claim
114 words
The electric energy charging control apparatus according to claim 1 , wherein the controller predicts the future state based on a state of the run of the vehicle, and changes the target value by: increasing the target value of charge when the state of the run of the vehicle is a state in which at least a predetermined amount of the charge is predicted to be discharged from the electric energy storage device, and by reducing the target value of charge when the state of the run of the vehicle is a state in which at least a predetermined amount of the charge is predicted to be charged into the electric energy storage device.
Claim 4
Dependent Claim
33 words
The electric energy charging control apparatus according to claim 1 , wherein the controller changes the target value of charge of the electric energy storage device in accordance with a vehicle ambient temperature.
Claim 5
Dependent Claim
27 words
The electric energy charging control apparatus according to claim 2 , wherein the state of the run of the vehicle is a vehicle speed of the vehicle.
Claim 6
Dependent Claim
73 words
The electric energy charging control apparatus according to claim 4 , wherein if the vehicle speed of the vehicle is a low vehicle speed for a predetermined time, the controller increases the target value of charge of the electric energy storage device to secure an amount of charge at least equal to an amount of charge that will be consumed by the motor-generator in anticipation of the vehicle being stopped or greatly accelerated.
Claim 7
Dependent Claim
72 words
The electric energy charging control apparatus according to claim 4 , wherein if the vehicle speed of the vehicle speed is a high vehicle speed for a predetermined time, the controller decreases the target value of charge of the electric energy storage device to increase a region for recovery of a regenerative energy that is to be obtained through the motor-generator in anticipation of a future state of the vehicle being decelerated.
Claim 8
Dependent Claim
56 words
The electric energy charging control apparatus according to claim 6 , wherein: a quantity of charge of the electric energy storage device corresponding to the decrease in the target value of charge is used by the motor-generator to assist in driving the vehicle, thereby reducing the output of the internal combustion engine and improving fuel economy.
Claim 9
Dependent Claim
68 words
The electric energy charging control apparatus according to claim 3 , wherein if the vehicle ambient temperature of the vehicle is lower than a predetermined temperature, the controller increases the target value of charge of the electric energy storage device to secure an amount of charge at least equal to an amount of charge that will be consumed by the motor-generator in anticipation of a low charging/discharging efficiency.
Claim 10
Dependent Claim
73 words
The electric energy charging control apparatus according to claim 3 , wherein if the vehicle ambient temperature of the vehicle is at least equal to a predetermined temperature, the controller only slightly increases the target value of charge of the electric energy storage device to secure an amount of charge at least equal to an amount of charge that will be consumed by the motor-generator in anticipation of a normal start or acceleration.
Claim 11
Dependent Claim
83 words
A electric energy charging control method for a hybrid vehicle including an internal combustion engine, a motor-generator capable of assisting a run of the vehicle, and a electric energy storage device connected to the motor-generator, the method comprising: predicting a future state of charge/discharge of the electric energy storage device; and changing a target value of charge of the electric energy storage device based on a result of the prediction regarding the future state of the charge/discharge of the electric energy storage device.
Claim 12
Dependent Claim
83 words
A electric energy charging control method for a hybrid vehicle including an internal combustion engine, a motor-generator capable of assisting a run of the vehicle, and a electric energy storage device connected to the motor-generator, the method comprising: predicting a future state of charge/discharge of the electric energy storage device; and changing a target value of charge of the electric energy storage device based on a result of the prediction regarding the future state of the charge/discharge of the electric energy storage device.
Claim 13
Dependent Claim
118 words
The electric energy charging control method according to claim 10 , wherein the future state of charge/discharge of the electric energy storage device is predicted based on a state of the run of the vehicle, and wherein: the target value of charge is increased if, from the state of the run of the vehicle, at least a predetermined amount of the charge is predicted to be discharged from the electric energy storage device at a future time, and the target value of charge is reduced if, from the state of the run of the vehicle, at least a predetermined amount of the charge is predicted to be charged into the electric energy storage device at the future time.
Claim 14
Dependent Claim
32 words
The electric energy charging control method according to claim 10 , wherein the target value of charge of the electric energy storage device is changed in accordance with a vehicle ambient temperature.
Claim 15
Dependent Claim
26 words
The electric energy control method according to claim 11 , wherein the state of the run of the vehicle is a vehicle speed of the vehicle.
Claim 16
Dependent Claim
72 words
The electric energy charging control method according to claim 13 , wherein: if the vehicle speed of the vehicle is a low vehicle speed for a predetermined time, the target value of charge of the electric energy storage device is increased to secure an amount of charge at least equal to an amount of charge that will be consumed by the motor-generator in anticipation of the vehicle being stopped or greatly accelerated.
Claim 17
Dependent Claim
71 words
The electric energy charging control method according to claim 13 , wherein: if the vehicle speed of the vehicle speed is a high vehicle speed for a predetermined time, the target value of charge of the electric energy storage device is decreased to increase a region for recovery of a regenerative energy that is to be obtained through the motor-generator in anticipation of a future state of the vehicle being decelerated.
Claim 18
Dependent Claim
56 words
The electric energy charging control method according to claim 15 , wherein: a quantity of charge of the electric energy storage device corresponding to the decrease in the target value of charge is used by the motor-generator to assist in driving the vehicle thereby reducing the output of the internal combustion engine and improving fuel economy.
Claim 19
Dependent Claim
67 words
The electric energy charging control method according to claim 12 , wherein if the vehicle ambient temperature of the vehicle is lower than a predetermined temperature, the target value of charge of the electric energy storage device is increased to secure an amount of charge at least equal to an amount of charge that will be consumed by the motor-generator in anticipation of a low charging/discharging efficiency.
Claim 20
Dependent Claim
72 words
The electric energy charging control method according to claim 12 , wherein: if the vehicle ambient temperature of the vehicle is at least equal to a predetermined temperature, the target value of charge of the electric energy storage device is only slightly increased to secure an amount of charge at least equal to an amount of charge that will be consumed by the motor-generator in anticipation of a normal start or acceleration.
References Cited (Backward Citations)
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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) | 2005-02-04 | 2005-08-06 | 2006-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-02-04 | 2009-08-06 | 2010-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-02-04 | 2013-08-06 | 2014-02-05 | $7700.00 | Window Closed / Lapsed |