Roadway-powered electric vehicle system having automatic guidance and demand-based dispatch features

• US 6,421,600 B1
• Filed: 05/30/2000
• Issued: 07/16/2002
• Est. Priority Date: 05/05/1994
• Status: Expired due to Term

• Current Assignee: HR Ross Industries Incorporated
• Original Assignee: HR Ross Industries Incorporated
• Inventors: Ross, Howard R.
• Primary Examiner(s): Beaulieu, Yonel
• Application Number:
  US09/583,455
• Time in Patent Office: 777 Days
• Field of Search: 701/117, 701/207, 701/213, 701/22, 701/24, 342/357.01, 342/357.06, 342/357.09, 342/457, 180/167, 180/165, 180/2.1, 191/10, 191/2, 307/9.1
• US Class Current: 701/117
• CPC Class Codes: B60L 2200/26 Rail vehicles
• CPC Class Codes: B60L 2210/20 AC to AC converters
• CPC Class Codes: B60L 2250/16 by display
• CPC Class Codes: B60L 2270/32 of electricity
• CPC Class Codes: B60L 2270/36 of vehicles
• CPC Class Codes: B60L 5/005 without mechanical contact between the collector and the power supply line
• CPC Class Codes: B60L 50/30 using propulsion power stored mechanically, e.g. in fly-wheels
• CPC Class Codes: B60L 50/51 characterised by AC-motors
• CPC Class Codes: B60L 53/124 Detection or removal of foreign bodies
• CPC Class Codes: B60L 53/126 Methods for pairing a vehicle and a charging station, e.g. establishing a one-to-one relation between a wireless power transmitter and a wireless power receiver
• CPC Class Codes: B60L 53/305 Communication interfaces
• CPC Class Codes: B60L 53/39 with position-responsive activation of primary coils
• CPC Class Codes: B60L 7/14 for vehicles propelled by ac motors
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 10/72 Electric energy management in electromobility
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles
• CPC Class Codes: Y02T 90/16 Information or communication technologies improving the operation of electric vehicles

Abstract

A roadway-powered electric vehicle (RPEV) system includes: (1) an all-electric vehicle; and (2) a roadway network over which the vehicle travels. The all-electric vehicle has one or more onboard energy storage elements or devices that can be rapidly charged or energized with energy obtained from an electrical current, such as a network of electromechanical batteries. The electric vehicle further includes an on-board controller that extracts energy from the energy storage elements, as needed, and converts such extracted energy to electrical power used to propel the electric vehicle. The energy storage elements may be charged while the vehicle is in operation. The charging occurs through a network of power coupling elements, e.g., coils, embedded in the roadway. The RPEV system also includes: (1) an onboard power meter; (2) a wide bandwidth communications channel to allow information signals to be sent to, and received from, the RPEV while it is in use; (3) automated garaging that couples power to the RPEV for both replenishing the onboard energy source and to bring the interior climate of the vehicle to a comfortable level before the driver and/or passengers get in; (4) electronic coupling between “master” and “salve” RPEV'"'"'s in order to increase passenger capacity and electronic actuators for quick-response control of the “slave” RPEV; (5) inductive heating coils at passenger loading/unloading zones in order to increase passenger safety; (6) an ergonomically designed passenger compartment; (7) a locating system for determining the precise location of the RPEV; and (8) a scheduling and dispatch computer for controlling the scheduling of RPEV'"'"'s around a route and dispatch of RPEV'"'"'s based on demand.

Claims

1. An electric vehicle comprising:

a vehicle frame supported by a suspension system;

an onboard power receiving module coupled to said vehicle frame that receives electrical power coupled thereto from a power transmitting module by which the electric vehicle passes;

an onboard energy storage means for storing and delivering electrical energy;

an electric drive means coupled to the suspension system; and

an onboard power controller means for receiving electrical power from said onboard power receiving module and directing it to said onboard energy storage means, and for selectively delivering electrical energy from said onboard energy storage means to said electric drive means in order to provide operating power for the electric vehicle.

2. An electric vehicle (EV) comprising:

a vehicle frame supported by a suspension system;

an onboard power receiving module mounted on an underneath side of said vehicle frame that receives electrical power coupled thereto from a power transmitting module over which the EV is positioned;

a power conditioner coupled to the power transmitting module;

an onboard energy storage means for storing and delivering electrical energy;

an electric drive means coupled to the suspension system; and

an onboard power controller means for receiving electrical power from said onboard power receiving module and directing it to said onboard energy storage means, and for selectively delivering electrical energy from said onboard energy storage means to said electric drive means in order to provide operating power for said EV.

3. The EV as set forth in claim 2 further including:

an onboard power meter electrically connected to the onboard power receiving module to monitor the electrical power received through said onboard power receiving module from said power transmitting module, said onboard power meter thereby providing a measure of the amount of electrical power that has been coupled to the EV; and

demodulation means coupled to said onboard power receiving module to demodulate a communication signal included with the electrical power received by the onboard power receiving module, said communication signal being directed to said onboard power controller means to provide information to said onboard power controller means that it uses to operate said EV more efficiently and/or more safely.

4. The EV as set forth in claim 3 wherein there are included a plurality of sensors in a ground over which the EV travels that monitor whether the ground has ice or moisture thereon, said sensors being spaced apart from each other by at least approximately 300 m, each of said sensors generating a sensor signal that identifies each sensor and provides an indication of whether snow or moisture is present at such identified sensor, said sensor signal being coupled to the power transmitting module and comprising the communication signal that is transmitted to the EV with the electrical power received by the onboard power receiving module, whereby each EV receives an indication of whether ice or moisture is present at a location on the ground corresponding to the identified sensor.

5. The EV as set forth in claim 4, wherein said EV includes modulation means for modulating an EV identification signal that identifies a particular EV, and onboard transmitting means for transmitting the EV signal to a numbered receiver located by each of said power transmitting modules, each of said numbered receivers being linked to a communication station, whereby the communication station can determine when the particular EV is located near the numbered receiver.

6. The EV as set forth in claim 2 wherein said onboard power controller means includes means for generating a set of control signals that control how said EV is being operated, and coupling means for coupling said set of control signals to a second EV, said second EV including means for electronically responding to said set of control signals so that the second EV is operated as controlled by said set of control signals, whereby said second EV follows said EV.

7. The EV as set forth in claim 6 wherein coupling means comprises a flexible cable that is connected between said EV and said second EV through which said set of control signals are transferred from the EV to the second EV.

8. The EV as set forth in claim 7 wherein said coupling means further includes an rf transmitter carried onboard said EV through which said set of control signals are transmitted, and wherein said second EV includes an onboard receiver through which the set of control signals transmitted from said EV are received.

9. The EV as set forth in claim 2 wherein said EV comprises a multiple occupancy vehicle (MOV) adapted for transporting at least 15 passengers, and wherein said MOV includes a passenger compartment that includes:

a door system that includes a side door that slides open and an upper door that swings up, thereby increasing the vertical entry space afforded a passenger entering or exiting said MOV through said door system; and

a seating arrangement that includes two rows of chairs set in a curved pattern.

10. A roadway-powered electric vehicle (RPEV) system comprising:

a network of highways and roadways that have been electrified with a multiplicity of roadway power transmitting modules embedded in the highways and roadways at select locations, each of said roadway power transmitting modules being connected to receive power from an electrical utility;

a plurality of RPEVs for traversing said network of highways and roadways using electrical power coupled to said RPEVs from the electrified highways and roadways as said RPEVs travel over the locations of the highways and roadways that have been electrified; and

communication means for establishing a communication channel with each of said plurality of RPEVs that transfers communication signals to and from said RPEVs through the electrified highways and roadways.

11. The RPEV system as set forth in claim 10 wherein each of said plurality of RPEVs includes an onboard power meter connected to monitor the amount of electrical power coupled from the electrified highways and roadways.

12. The RPEV system as set forth in claim 11 wherein the onboard power meter is coupled to said communication means and the amount of electrical power monitored by said onboard power meter are included within the communication signals transferred through said communication channel.

13. The RPEV system as set forth in claim 10 wherein the network of highways and roadways includes parking/garaging locations, and further wherein said parking/garaging locations are electrified with a power transmission module connected to receive power from the electrical utility.

14. The RPEV system as set forth in claim 13 further including a charging control circuit coupled to the power transmission module, said charging control circuit including means for sensing the presence of a parked RPEV at the parking/garaging locations, and means for automatically coupling power to the parked RPEV only at preselected times during the day when power rates from the electrical utility are the lowest.

15. The RPEV system as set forth in claim 14 wherein the charging control circuit at each parking/garaging location further includes means for coupling power to the parked RPEV in one of two coupling modes:

a first coupling mode that couples 200 W to 500 W of electrical power to the parked RPEV on command, and which coupled electrical power is used by the RPEV to bring the interior temperature of the RPEV to a comfortable level; and

a second coupling mode that couples 6 kW to 10 kW of electrical power to the RPEV over a one to four hour time period at the preselected times during the day when power rates are the lowest, which coupled electrical power is used to replenish an onboard energy storage system of the parked RPEV.

16. The RPEV system as set forth in claim 15 wherein said charging control circuit further includes a communication receiver for receiving a command signal that automatically begins said first coupling mode.

17. The RPEV system as set forth in claim 10 wherein said communication channel comprises power lines used by the electrical utility to distribute electrical power to the roadway power transmitting modules and elsewhere.

18. The RPEV system as set forth in claim 10 wherein said communication channel comprises commercial communication lines provided by telecommunication providers.

19. The RPEV system as set forth in claim 10 wherein said communication channel comprises dedicated wide bandwidth communication lines installed to connect each of said roadway power transmitting modules with a central monitoring location.

20. The RPEV system as set forth in claim 10 wherein said communication channel further includes means embedded in highways and roadways for establishing a communication link with each of the plurality of RPEVs when said RPEV is over non-electrified portions of said highways and roadways, whereby continuous communications are made with said RPEV as it traverses said network of highways and roadways, whether on electrified or non-electrified portions of the network of highways and roadways.

21. The RPEV system as set forth in claim 10 wherein said roadway power transmitting modules receive 3-phase, 50/60 Hz electrical power from the electrical utility, and wherein a power conditioner converts the 3-phase, 50/60 Hz electrical power from the electrical utility to a 1-phase, 2500-3500 kHz electrical power for use by said roadway power transmitting modules, said RPEV system further comprising heater means embedded in the surface structure along the side of the highway or roadway adjacent selected ones of said roadway power transmitting modules, said heater means being powered by electrical power from the power conditioner to prevent the formation of ice and the accumulation of snow at the location of said heater means.

22. An electric vehicle comprising:

a vehicle frame supported by a suspension system;

an onboard power receiving module coupled to said vehicle frame that receives electrical power coupled thereto from a power transmitting module, which the electric vehicle passes by;

an onboard energy storage means for storing electrical energy;

an electric drive means coupled to the suspension system; and

an onboard power controller means for receiving electrical power from said on-board power module and directing it to said energy storage means;

wherein said energy storage means is used as a generator.

23. The electric vehicle of claim 22 wherein the onboard energy storage means is an electromagnetic battery.

24. The electric vehicle of claim 22 wherein the generator produces ac power.

25. The electric vehicle of claim 22 further including:

a second electric vehicle;

wherein the onboard energy storage means of the second electric vehicle is used as a second generator.

26. The electric vehicle of claim 25 wherein the generator and the second generator produce ac power.

27. The electric vehicle of claim 22 further including a power conditioner.