Overload Restriction in System for Electrical Vehicles

• US 20130020163A1
• Filed: 03/31/2011
• Published: 01/24/2013
• Est. Priority Date: 04/01/2010
• Status: Active Grant

• Current Assignee: Elways AB
• Original Assignee: Elways AB
• Inventors: Asplund, Gunnar
• Granted Patent: US 8,776,969 B2
• Time in Patent Office: Days
• US Class Current: 191/22.C
• CPC Class Codes: B60L 15/20 for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
• CPC Class Codes: B60L 2200/26 Rail vehicles
• CPC Class Codes: B60L 3/0046 relating to electric energy storage systems, e.g. batteries or capacitors
• CPC Class Codes: B60L 3/0092 with use of redundant elements for safety purposes
• CPC Class Codes: B60L 50/61 by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
• CPC Class Codes: B60L 53/00 Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
• CPC Class Codes: B60L 53/60 Monitoring or controlling charging stations
• CPC Class Codes: B60L 53/63 in response to network capacity
• CPC Class Codes: B60L 53/65 involving identification of vehicles or their battery types
• CPC Class Codes: B60L 9/00 Electric propulsion with power supply external to the vehicle electric propulsion for monorail vehicles, suspension vehicles or rack railways B60L13/00; in combination with batteries or fuel cells within the vehicle B60L50/53
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y02T 10/64 Electric machine technologies in electromobility
• 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
• CPC Class Codes: Y02T 90/167 Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: Y04S 10/126 : the energy generation units being or involving electric vehicles [EV] or hybrid vehicles [HEV], i.e. power aggregation of EV or HEV, vehicle to grid arrangements [V2G]
• CPC Class Codes: Y04S 30/14 : Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

Abstract

This invention comprises an arrangement for overload restriction, adapted to cooperate with a system (“S) for an electric and by one or more batteries or “a” battery set driven vehicle (1) to be driven along a stretch of roadway, comprising a one or more over an individual electric motor or motors drivable vehicles (1), with said respective vehicles (1) exhibiting a control circuit (100, “R1”) controlling the power for creating the necessary power and/or speed control, wherein a necessary power i.a. can be supplied primarily by a chargeable battery set (“B”) allotted to the vehicle, and “b” a plurality of a roadway sections (2a1) sub-dividing the stretch of road, each one allotted to one or more electric stations (“s1”, “III”) for thereby charging the battery set (“II”; B) of the vehicle and/or supplying the necessary power and energy for driving the vehicle. The invention indicates that to said vehicles external source of power (“III”; 71; 42) is connected, at least to a chosen maximized power outlet, a withdrawn power limiting circuit (74a) and that this circuit (74a) is adapted, over a switch (44a) to supply the power to said conductor (4a, 4b) in its roadway section (2a2), during the time periods when the vehicle (1) passes said road-way section (2a2).

Claims

1. A vehicle-related arrangement for overload restriction, said arrangement is to be associated with an arm-shaped contact means related to an arrangement or system (“

S”

) for propelling an electrically, i.a. by one or several batteries or a set of batteries “

II”

, B), propellable vehicle (1) along a stretch of a roadway (2) and its associated roadway sections or portions (2a, 2b), said arrangement comprising “

a”

a plurality of roadway portions (2a1, 2a2) for subdividing the stretch of the roadway (2), wherein each one of these road portions is allotted one or more elongated tracks or slits (51, 52) having introduced therein current supplyable and under voltage placeable conductors (4a, 4b), connectable over a switch (43a) to one or more power sources (“

III”

) external to the vehicle, such as electric stations (“

s1”

), for thereby i.a. enabling a charging of said set of batteries (“

II”

, B) related to the vehicle (1), but over the battery set up driving the vehicle (1) along the stretch of roadway (2) and its roadway portion (2a1, 2a2), and “

b”

one or more by means of an electric motor (5) or motors powerable vehicles (1), with each of the respective vehicles exhibiting a control circuit (100, “

R1”

) adapted for necessary distribution of power, adapted for creating a required power and/or speed control, wherein said vehicle (1) is on its underneath side provided with an up and down and sideways, counting across the direction of transportation of the vehicle, displaceable contact means ((4)), and with said elongated track or tracks and its conductors (4a, 4b) extending along the stretch of the road and its roadway (2) and in which said contact means ((4)) is coordinated with a vehicle-related control equipment (100, 10) for creating an adaptation of the contact means ((4)) so as at least to offer a mechanical and electrical contact with said conductors (4a, 4b), wherein coordination between the conductors (4a, 4b) placed under voltage allotted to the roadway portion (2a1) and the contact means ((4)) of the vehicle (1) occurs via coordinated current connectors, such as in the form of contact springs (4′

, 4″

), adapted for mechanical and electrical cooperation with respective ones of the conductors (4a, 4b) placed under voltage, to said power source (“

III”

) external to the vehicle, is connected a circuit (73a) limiting the momentary power outlet and being adapted, over said switch (43a), to supply power to said conductor (4a, 4b) within its roadway section when the vehicle passes, that said vehicle (1), over a transmitter belonging to the vehicle, is adapted to transfer to an electric station (“

s1”

) and its receiver in a roadway section in front, informatory information corresponding to the requirement of power and/or energy of the vehicle while the vehicle passes over the roadway section located in front, and that a transmitter allotted to the electric station (“

s1”

) is adapted to transfer, to a receiver allotted to the vehicle, informatory information corresponding to a supply of allotted power and/or energy which will be available when the vehicle (1) passes over one or more of the roadway sections located in front of it.

2. Arrangement in accordance with claim 1, wherein a plurality of electric stations are coordinated to one and the same superior feed station and that when a vehicle over its allotted transmitter sends a requesting information to the receiver of a station, said station will allot power and/or energy access solely in response to received information from a superior feeding station.

3. Arrangement in accordance with claim 2, wherein a superior feeding station with electric stations related thereto and allotted roadway sections the total power and/or energy supply between stations and allotted vehicles is distributed related in time.

4. Arrangement in accordance with claim 1, wherein said vehicle (1) is over a transmitter allotted to the vehicle adapted to the electric station (52) of a road section in front and its receiver to transmit requesting information corresponding to the power and/or energy requirement when the vehicle passes over a chosen plurality of roadway sections in front thereof, that the superior feeding station receives said information and that the superior feeding station then is adapted to feed to relevant electric stations and in response to instantaneous load distribution over information which unitarily determines its allotted power and/or energy access during the time periods when said vehicle passes the roadway sections allotted to the station.

5. Arrangement in accordance with claim 1, wherein a roadway section (2a1) supporting a vehicle (1), i.a. over its conductors and its external electric source of energy (“

III”

, 42) measures the battery set and/or the motor (5) of the vehicle from a switch (43a) allotted to the roadway section (2a1), whereas an adjacent, such as located in front, roadway section (2a2) with its electric conductors (4a′

, 4b′

) successively is to control with regard to the criteria of intact roadway section and thereafter be provided with its DC or AC feed voltage from the external electric source of power (“

III”

, 42) or another source of power as from its switch (44a) allotted to the roadway section (2a2) solely during the time sections when the vehicle (1) will pass this road section (2a2) located in front and that each roadway section with its at least two conductors can be allotted the same feed voltage.

6. Arrangement in accordance with claim 1, wherein a switching means (43a, 44a) is to be related to each or to solely chosen roadway sections (2a1, 2a2) and its electric conductors (4a, 4b), where such a switching means (44a) is to be related to a roadway section (2a2) in front, with its conductors (4a′

, 4b′

) still not subjected to voltage, and where this switching means (44a) is to be adapted, over a clearing signal initiated by a supervisory circuit (140), after sensing an intact roadway section, to activate the switching means (44a) for supplying a feed voltage to its conductor (4a, 4b).

7. Arrangement in accordance with claim 6, wherein the supervisory circuit (140) is adapted to control, by a remotely controlled signal (radio signal) from the vehicle (1), on the one hand that the roadway section (2a2) in front with its conductors (4a, 4b) is intact and on the other hand to record an identity allotted to the vehicle as well as to activate the switching means (44a) for supplying a feed voltage to its conductor.

8. Arrangement in accordance with claim 1, wherein said conductor, which may be supplied with current and which may be subjected to voltage, is adapted to the transfer of power which is required for power feeding the battery set during the time sections it is to drive the electric motor (5) with a momentary high load.