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US5359308A
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US
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Vehicle energy management system using superconducting magnetic energy storage
Assignee: BAE Systems Aerospace Electronics Inc
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Filing: 1993-10-27
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Granted: 1994-10-25
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Expires: 2013-10-27
Abstract
Abstract An energy management system for a hybrid internal combustion and electric vehicle provides a highly energy-efficient and yet highly agile hybrid vehicle. The vehicle includes an internal combustion engine, an electric motor/generator and at least one electric storage battery for storing and dispensing energy, all operating in conjunction with an energy storage system including a sensing and control unit and a superconducting magnetic energy storage device. The sensing and control unit is connected to the motor/generator, the battery and the storage device, and has as an input at least one sensor signal representative of a preselected sensed vehicle condition. The sensing and control unit selectably charges the battery at a charging rate compatible with maximum battery efficiency, discharges the battery at a discharging rate also compatible with maximum battery efficiency, causes the storage device to store energy from the motor/generator, and causes the storage device to supply stored energy to the motor/generator, in response to the sensed vehicle condition.
Inventors
- 👤 Xiaoguang Sun
- 👤 Mark S. Colyar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:08
CPC Classifications
B; B60; B60K; B60K6/00; B60K6/20; B60K6/22; B60K6/28; B60K6/38; B60K6/387; B60K6/42; B60K6/48; B60L; B60L15/00; B60L15/20; B60L15/2045; B60L3/00; B60L3/0023; B60L3/0061; B60L50/00; B60L50/10; B60L50/16; B60L50/40; B60L58/00; B60L58/10; B60L58/12; B60W; B60W10/00; B60W10/02; B60W10/04; B60W10/08; B60W10/24; B60W10/26; B60L2200/00; B60L2200/26; B60L2240/00; B60L2240/10; B60L2240/36; B60L2240/40; B60L2240/42; B60L2240/425; B60W2510/00; B60W2510/24; B60W2510/242; B60W2510/244; B60W2540/00; B60W2540/12; 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; Y10S903/904; Y10S903/907; Y10S903/912; Y10S903/914; Y10S903/946
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
164 words
An energy management system for a hybrid internal combustion and electric vehicle having an internal combustion engine, an electric motor/generator and at least one electric storage battery for storing and dispensing energy, comprising a sensing and control unit having as an input thereto at least one sensor signal representative of a preselected vehicle parameter and generating as an output a control signal in response to said at least one sensor signal, said sensing and control unit being electrically connected to said motor/generator and said battery, and a magnetic energy storage device for storing and dispensing energy and being connected to said sensing and control unit and to said motor/generator and said battery through said sensing and control unit, said device being operated by said control signal to selectably draw energy from said battery at a rate compatible with maximum battery efficiency, charge said battery at said rate, supply energy to said motor/generator, and store energy from said motor/generator, in response to said control signal.
Claim 2
Dependent Claim
164 words
An energy management system for a hybrid internal combustion and electric vehicle having an internal combustion engine, an electric motor/generator and at least one electric storage battery for storing and dispensing energy, comprising a sensing and control unit having as an input thereto at least one sensor signal representative of a preselected vehicle parameter and generating as an output a control signal in response to said at least one sensor signal, said sensing and control unit being electrically connected to said motor/generator and said battery, and a magnetic energy storage device for storing and dispensing energy and being connected to said sensing and control unit and to said motor/generator and said battery through said sensing and control unit, said device being operated by said control signal to selectably draw energy from said battery at a rate compatible with maximum battery efficiency, charge said battery at said rate, supply energy to said motor/generator, and store energy from said motor/generator, in response to said control signal.
Claim 3
Dependent Claim
21 words
An energy management system as in claim 1, wherein the magnetic energy storage device is a superconducting magnetic energy storage device.
Claim 4
Dependent Claim
22 words
An energy management system as in claim 1, wherein the magnetic energy storage device is a high-temperature superconducting magnetic energy storage device.
Claim 5
Dependent Claim
20 words
An energy management system as in claim 1, wherein said preselected vehicle parameter is the state of an accelerator control.
Claim 6
Dependent Claim
20 words
An energy management system as in claim 1, wherein said preselected vehicle parameter is the state of a brake control.
Claim 7
Dependent Claim
23 words
An energy management system as in claim 1, wherein said preselected vehicle parameter is the state of charge of the electric storage battery.
Claim 8
Dependent Claim
24 words
An energy management system as in claim 1, wherein said preselected vehicle parameter is the state of charge of the magnetic energy storage device.
Claim 9
Dependent Claim
55 words
An energy management system as in claim 1, wherein said sensing and control unit has as inputs thereto plural sensor signals representative of the state of an accelerator control, the state of a brake control, the state of charge of the electric storage battery, and the state of charge of the magnetic energy storage device.
Claim 10
Dependent Claim
145 words
An energy management system for a hybrid internal combustion and electric vehicle having an internal combustion engine, an electric motor/generator and at least one electric storage battery for storing and dispensing energy, said system comprising a sensing and control unit and a superconducting magnetic energy storage device, said sensing and control unit being connected to said motor/generator, said battery and said storage device, said sensing and control unit having as an input thereto at least one sensor signal representative of a preselected sensed vehicle condition, said sensing and control unit selectably charging said battery at a charging rate compatible with maximum battery efficiency, discharging said battery at a discharging rate also compatible with maximum battery efficiency, causing said storage device to store energy from said motor/generator, and causing said storage device to supply stored energy to said motor/generator, in response to said sensed vehicle condition.
Claim 11
Dependent Claim
145 words
An energy management system for a hybrid internal combustion and electric vehicle having an internal combustion engine, an electric motor/generator and at least one electric storage battery for storing and dispensing energy, said system comprising a sensing and control unit and a superconducting magnetic energy storage device, said sensing and control unit being connected to said motor/generator, said battery and said storage device, said sensing and control unit having as an input thereto at least one sensor signal representative of a preselected sensed vehicle condition, said sensing and control unit selectably charging said battery at a charging rate compatible with maximum battery efficiency, discharging said battery at a discharging rate also compatible with maximum battery efficiency, causing said storage device to store energy from said motor/generator, and causing said storage device to supply stored energy to said motor/generator, in response to said sensed vehicle condition.
Claim 12
Dependent Claim
20 words
An energy management system as in claim 9, wherein said preselected vehicle condition is the state of an accelerator control.
Claim 13
Dependent Claim
20 words
An energy management system as in claim 9, wherein said preselected vehicle condition is the state of a brake control.
Claim 14
Dependent Claim
23 words
An energy management system as in claim 9, wherein said preselected vehicle condition is the state of charge of the electric storage battery.
Claim 15
Dependent Claim
24 words
An energy management system as in claim 9, wherein said preselected vehicle condition is the state of charge of the magnetic energy storage device.
Claim 16
Dependent Claim
55 words
An energy management system as in claim 9, wherein said sensing and control unit has as inputs thereto plural sensor signals representative of the state of an accelerator control, the state of a brake control, the state of charge of the electric storage battery, and the state of charge of the magnetic energy storage device.
Claim 17
Dependent Claim
227 words
A hybrid electric vehicle, comprising an internal combustion engine for supplying a portion of motive power for said vehicle, said engine being controlled by an accelerator to cause power output of said engine to vary between preselected limits, an electric motor/generator for supplying a portion of motive power for said vehicle, an electric storage battery for storing and dispensing energy, a superconducting magnetic energy storage device for storing and dispensing energy, a brake for braking said vehicle, a sensing and control unit having as inputs thereto sensor signals representative of the state of the accelerator, the state of the brake, the amount of energy stored in the battery and the amount of energy stored in the superconducting magnetic energy storage device and generating as outputs control signals in response to said sensor signals, and control devices responsive to said control signals and associated with said motor/generator and superconducting magnetic energy storage device for selectably causing (1) said superconducting magnetic energy storage device to supply energy to said motor/generator, (2) said motor/generator to charge said superconducting magnetic energy storage device with energy from said motor/generator, (3) said superconducting magnetic energy storage device to charge said battery at a charging rate compatible with maximum battery efficiency, and (4) said battery to supply energy to said superconducting magnetic energy storage device at a discharge rate compatible with maximum battery efficiency.
Claim 18
Dependent Claim
227 words
A hybrid electric vehicle, comprising an internal combustion engine for supplying a portion of motive power for said vehicle, said engine being controlled by an accelerator to cause power output of said engine to vary between preselected limits, an electric motor/generator for supplying a portion of motive power for said vehicle, an electric storage battery for storing and dispensing energy, a superconducting magnetic energy storage device for storing and dispensing energy, a brake for braking said vehicle, a sensing and control unit having as inputs thereto sensor signals representative of the state of the accelerator, the state of the brake, the amount of energy stored in the battery and the amount of energy stored in the superconducting magnetic energy storage device and generating as outputs control signals in response to said sensor signals, and control devices responsive to said control signals and associated with said motor/generator and superconducting magnetic energy storage device for selectably causing (1) said superconducting magnetic energy storage device to supply energy to said motor/generator, (2) said motor/generator to charge said superconducting magnetic energy storage device with energy from said motor/generator, (3) said superconducting magnetic energy storage device to charge said battery at a charging rate compatible with maximum battery efficiency, and (4) said battery to supply energy to said superconducting magnetic energy storage device at a discharge rate compatible with maximum battery efficiency.
Claim 19
Dependent Claim
24 words
A hybrid electric vehicle according to claim 15, wherein the superconducting magnetic energy storage device is a high temperature superconducting magnetic energy storage device.
Claim 20
Dependent Claim
352 words
An energy producing and storage system for a hybrid electric vehicle, comprising an internal combustion engine for generating energy for providing a portion of motive power for said vehicle, said engine being controlled by an accelerator to cause energy generated by said engine to vary between preselected limits, an electric motor/generator for supplying a portion of motive power for said vehicle when operated as a motor and for converting kinetic energy of the vehicle to electricity when operated as a generator, an electric storage battery for storing and dispensing energy, a charger generator driven by said engine for maintaining the charge in said battery at a predetermined level, a superconducting magnetic energy storage device for storing and dispensing energy, a brake for braking said vehicle, a sensing and control unit having as inputs thereto sensor signals representative of the state of the accelerator, the state of the brake, the amount of energy stored in the battery and the amount of energy stored in the superconducting magnetic energy storage device and generating as outputs control signals in response to said sensor signals, and control devices responsive to said control signals and associated with respective ones of said motor/generator, charger generator and superconducting magnetic energy storage device for selectably causing (1) said superconducting magnetic energy storage device to supply energy to said motor/generator to drive said motor/generator as a motor when the accelerator is depressed, (2) said motor/generator to operate as a generator and convert vehicle kinetic energy to electrical energy and charge said superconducting magnetic energy storage device with said energy from said motor/generator during vehicle braking, (3) said superconducting magnetic energy storage device to charge said battery at a charging rate compatible with maximum battery efficiency, and (4) said battery to supply energy to said superconducting magnetic energy storage device at a discharge rate compatible with maximum battery efficiency, and (5) said charger generator to charge said battery when the level of charge in the battery falls below a first preselected limit and to cease charging the battery when the level of charge in the battery rises above a second preselected limit.
Claim 21
Dependent Claim
352 words
An energy producing and storage system for a hybrid electric vehicle, comprising an internal combustion engine for generating energy for providing a portion of motive power for said vehicle, said engine being controlled by an accelerator to cause energy generated by said engine to vary between preselected limits, an electric motor/generator for supplying a portion of motive power for said vehicle when operated as a motor and for converting kinetic energy of the vehicle to electricity when operated as a generator, an electric storage battery for storing and dispensing energy, a charger generator driven by said engine for maintaining the charge in said battery at a predetermined level, a superconducting magnetic energy storage device for storing and dispensing energy, a brake for braking said vehicle, a sensing and control unit having as inputs thereto sensor signals representative of the state of the accelerator, the state of the brake, the amount of energy stored in the battery and the amount of energy stored in the superconducting magnetic energy storage device and generating as outputs control signals in response to said sensor signals, and control devices responsive to said control signals and associated with respective ones of said motor/generator, charger generator and superconducting magnetic energy storage device for selectably causing (1) said superconducting magnetic energy storage device to supply energy to said motor/generator to drive said motor/generator as a motor when the accelerator is depressed, (2) said motor/generator to operate as a generator and convert vehicle kinetic energy to electrical energy and charge said superconducting magnetic energy storage device with said energy from said motor/generator during vehicle braking, (3) said superconducting magnetic energy storage device to charge said battery at a charging rate compatible with maximum battery efficiency, and (4) said battery to supply energy to said superconducting magnetic energy storage device at a discharge rate compatible with maximum battery efficiency, and (5) said charger generator to charge said battery when the level of charge in the battery falls below a first preselected limit and to cease charging the battery when the level of charge in the battery rises above a second preselected limit.
Claim 22
Dependent Claim
24 words
A hybrid electric vehicle according to claim 17, wherein the superconducting magnetic energy storage device is a high temperature superconducting magnetic energy storage device.
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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) | 1997-10-24 | 1998-04-25 | 1998-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-10-24 | 2002-04-25 | 2002-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-10-24 | 2006-04-25 | 2006-10-25 | $7700.00 | Window Closed / Lapsed |