Electricity generating suspension system for hybrid and electric automobiles

• US 8,874,291 B2
• Filed: 06/24/2010
• Issued: 10/28/2014
• Est. Priority Date: 06/24/2009
• Status: Active Grant

• Current Assignee: Intertronic Gresser GmbH
• Original Assignee: Intertronic Gresser GmbH
• Inventors: Gresser, German
• Primary Examiner(s): Cheung, Mary
• Assistant Examiner(s): Trivedi, Atul
• Application Number:
  US13/380,197
• Publication Number:
  US 20120303193A1
• Time in Patent Office: 1,587 Days
• Field of Search: 701/3, 701 21- 22, 701/81, 701/490, 701/123, 903/903, 903/906, 903/907, 440/6
• US Class Current: 701/22
• CPC Class Codes: B60G 17/0157 non-fluid unit, e.g. electric motor
• CPC Class Codes: B60G 2202/413 Hydraulic actuator
• CPC Class Codes: B60G 2204/30 In-wheel mountings
• CPC Class Codes: B60G 2300/60 Vehicles using regenerative power
• CPC Class Codes: B60G 2400/252 vertical
• CPC Class Codes: B60G 2400/5182 Fluid damper
• CPC Class Codes: B60K 16/00 Arrangements in connection with power supply of propulsion units in vehicles from forces of nature, e.g. sun or wind electric propulsion with power supply from forces of nature, e.g. sun or wind B60L8/00; marine propulsion by wind motors driving water-engaging propulsive elements B63H13/00; wind motors specially adapted for installation on vehicles F03D9/32
• CPC Class Codes: B60K 25/10 directly from oscillating movements due to vehicle running motion, e.g. suspension movement resilient suspensions having dampers accumulating utilisable energy, e.g. compressing air, B60G13/14
• CPC Class Codes: B60L 2200/26 Rail vehicles
• CPC Class Codes: B60L 50/30 using propulsion power stored mechanically, e.g. in fly-wheels
• CPC Class Codes: B60L 50/40 using propulsion power supplied by capacitors
• CPC Class Codes: B60L 8/00 Electric propulsion with power supply from forces of nature, e.g. sun or wind
• 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: Y10S 903/903 having energy storing means, e.g. battery, capacitor
• CPC Class Codes: Y10S 903/906 Motor or generator
• CPC Class Codes: Y10S 903/907 Electricity storage, e.g. battery, capacitor

Abstract

The invention relates to vehicles for transporting persons and/or goods, which vehicles travel on roads or alternatively on rails and at least partially use electrical energy using electric motors as drive units, wherein the electrical energy used is predominantly or substantially produced within the vehicle by converting kinetic energy, in particular components of the kinetic energy that are caused on the vehicle bodywork as gravitation effects and components of the kinetic energy from curve centrifugal forces and acceleration motions of the vehicle body, the vertical dynamic acceleration motions of the wheels and wheel suspensions, and other components, wherein the electrical energy generated in such away is temporarily stored in chemical energy stores (batteries) and/or other suitable storage media, for example, high-power capacitors or flywheel stores, until the electricity is used in the vehicle drive motors and/or other loads.

Claims

1. A vehicle for transporting persons and/or goods, which vehicle alternatively moves on water, on the ground or in the air and at least partially uses electrical energy and electric motors as a drive medium,

wherein the electrical energy used is produced mainly or for a substantial part within the vehicle from the conversion of solar radiation and kinetic energy during braking, from the headwind, and from components of the kinetic energy of gravitational effects on the vehicle body, wheels and wheel suspensions and components of the kinetic energy of centrifugal forces and positive or negative vertical acceleration movements of the vehicle body (3), vehicle wheels (1) and wheel suspensions (4), with subsequent temporary storage of the electricity generated in this manner in batteries or other suitable storage media, for example high-capacity capacitors, until use of the electricity in the drive motors of the vehicle or other electricity consumers,

wherein the suspension and damping element (2) is connected at the lower end to the wheel suspension (4) by means of a joint (4a) and is connected at the upper end to the upper part of the body (3) by means of the strut suspension (3a), and an electricity-generating linear generator (7) is situated in the interior, which consists of the stator (8), the piston rod (6.1/6.2) situated in the central axis and the actuator (11) mounted thereon,

and wherein the piston rod (6.1/6.2) bears the pressure piston 1 (KO.1) at one end and the pressure piston 2 (KO.2) at the other end, wherein the pressure pistons 1 and 2 (KO.1/KO.2) are part of the hydraulic spring and damper element (5) in the pressure cylinders 1 (DZ.1) and 2 (DZ.2).

2. The vehicle according to claim 1 wherein the stator (8) consists of electrically conductive windings and preferably has an interior cylindrical cavity, in which the actuator (11) is fastened to the piston rod (6.1/6.2) or surrounds the latter over the entire length thereof, preferably as a cylindrical part, and slides up and down inside the stator magnetic field with a minimal air gap when the piston rod (6.1/6.2) moves and thereby generates electricity by induction in a known manner.

3. The vehicle according to claim 1 wherein the preferably vertically movable actuator (11) either consists of electrically conductive windings or is preferably configured as a suitably shaped and dimensioned rare earth permanent magnet.

4. The vehicle according to claim 1 wherein the linear generator (7) is arranged centrally between the double pressure chambers 1 and 2 (DK.1/DK.2) and 3 and 4 (DK.3/DK.4) with the associated pressure pistons 1 (KO.1) and 2 (KO.2) and the respective piston rods (6.1) and (6.2) are connected to each other and the actuator (11) of the linear generator (7) is mounted fixedly in the centre thereof. (FIG. 3).

5. A method of using the vehicle according to claim 1, the method being for producing in-vehicle electrical energy by converting components of the kinetic energy of the vehicle and components of the gravity acting on the vehicle body into electricity,

wherein the method is carried out with at least one double-action hydraulic cylinder, referred to as hydraulic spring and damper element (2)+(5), per vehicle wheel, which is connected in a suitable manner to the vehicle wheel suspension (4) and/or to the vehicle body (3) and thus absorbs at least some of the kinetic energy and components of gravity as forces and transmits them mechanically and/or pneumatically and/or preferably hydraulically to any suitably arranged and technically, electrically and electromagnetically suitably designed electricity generator, preferably a linear generator (7), the integrated actuator (11) of which is excited into high-frequency oscillating vibrations by the kinetic and gravitational energy acting on the vehicle in interaction with suitable pneumatic or preferably hydraulic systems and elements and electronic circuits, and electricity is thereby generated by induction by the linear generator (7) in a known manner,

wherein the control electronics (16) provided with suitably programmed algorithms control all functions electronically using the relevant sensor parameters of pressure, travel, position, acceleration, speed including other relevant parameters of vehicle and driving states such as speed, delay, lateral acceleration etc.,

and wherein the travel and the respective positions of the two pressure pistons 1 (KO.1) and 2 (K.2) and the actuator (11) congruent with the movement are monitored constantly by at least one suitable sensor, which is preferably an electronic travel sensor (WS) and/or at least one pressure sensor (DS), and thus the current position of the two pressure pistons (KO.1/KO.2) between the respective top and bottom dead centres (OT/UT) is registered and communicated to the control electronics (16).

6. The method according to claim 5 wherein at least two vehicle wheels (1) output their kinetic energy in the form of hydraulic pressure (K.hydr) to a common linear generator (7).

7. The method according to claim 5, wherein the movement of the actuator (11) in the magnetic field of the stator (8) causes a counter force counter to the direction of movement of the actuator (11) which is proportional to the magnetic field strength and in principle effects the same function (movement damping) as the customary hydraulic shock absorbers and associated helical springs, wherein the strength of the damping effect is varied by the control electronics (16) by changing the magnetic field strength of the stator (8) and/or where applicable of the actuator (11) as a result of electronically controlled change in the current strength/current amplitude and thus of the magnetic field strength in the stator (8) or where applicable in the actuator (11), if the latter generates its magnetic field by means of a coil through which current flows.

8. The method according to claim 5, wherein the magnetic damping effect which causes the magnetically induced counter force (K.mag) is varied electronically, and the positive vertical movement (Y1) of the pressure piston (KO.2) is braked, that is, damped and in exceptional cases stopped as required shortly before the top dead centre (OT.2) is reached or if required in any other position by supplying hydraulic fluid via the hydraulic line (9.2b), wherein this can also be carried out in a variably metered manner by the control electronics (16) by means of suitably designed throttle valves.

9. A method according to claim 5 wherein self-levelling is realised by corresponding programming of the algorithms in the control electronics (16) by changing the working distance (A) of the pressure pistons 1 (KO.1) and 2 (KO.2) in each case for the two wheels (1) of a vehicle axle, wherein a greater load due to loading reduces the working distance (A) by the change in load due to the loading force (b), which makes the distance (B) consistent again with the distance (A) by means of an increase in pressure in the pressure chamber 1 (DK.1) and/or a reduction in pressure in the pressure chamber 2 (DK.2) and/or alternatively an increase in pressure in the pressure chamber 4 (DK.4) and/or a reduction in pressure in the pressure chamber 3 (DK.3), and thus re-establishes the same height level of the vehicle centre axis.

10. A method according to claim 5, wherein an at least partial compensation of centrifugal forces during cornering by changes in the height of the body of the two outer-curve wheels with respect to the inner-curve wheels is realised in that the control electronics (16) variably reduce the working distance of the pressure pistons (5.1c/5.2c) from the struts (2) of the inner-curve wheel suspensions (4) in proportion to the speed or the effective centrifugal force and/or the working distance (A) of the pressure pistons (5.1c/5.2c) in the struts (2) of the outer-curve wheel suspensions (4) is variably increased in proportion to the speed or the effective centrifugal force, as a result of which the inner-curve side of the vehicle (1) is below the normal height (H.norm) and the outer-curve side of the vehicle (1) is above the normal height (H.norm), and the transverse axis of the vehicle thus assumes a position which is inclined with respect to the horizontal in the direction of the inside of the curve.

11. The method according to claim 5, wherein the proportional vehicle weight (VG) is in this case supported by the pressure chamber 1 (DK.1), which is filled with hydraulic fluid by the hydraulic pump (P.1) via the hydraulic line (9.1a) and a single-way stop valve (14), and the equal counter pressure (Vp.1) present there and is constantly monitored by the pressure sensor (DS.1) and if required changed in an electronically controlled manner.

12. A method of using the vehicle according to claim 5 for producing in-vehicle electrical energy by converting components of the kinetic energy of the headwind acting on the vehicle body owing to the movement of the vehicle into electricity, characterised in that the headwind is conducted through air turbines, and the latter are set in rotation, and this rotation of the at least one air turbine drives at least one suitably designed and dimensioned electricity generator.

13. A method of using the vehicle according to claim 1, the method being for producing in-vehicle electrical energy by converting components of the kinetic energy of the vehicle and components of the gravity acting on the vehicle body into electricity, wherein the at least one hydropneumatic high-pressure reservoir (15) is provided with pressure boosters (34) for each vehicle wheel (1) or alternatively is designed in dimensions and technical properties and used as a hydraulic spring and damper element (5) for several vehicle wheels (1).

14. A vehicle according to claim 1, wherein the at least one air inlet opening of at least one air ram pressure duct (25) (air funnel), which tapers conically in the direction of the second (outlet) opening thereof and receives and accelerates the headwind, is situated at a suitable point on the vehicle, preferably on the front part.

15. A method of using the vehicle according to claim 1, the method being for in-vehicle electricity generation by converting components of the vertical kinetic vehicle energy from positive and negative acceleration forces (vertical body movements) and horizontal positive and negative accelerations in the longitudinal axis of the vehicle and centrifugal forces occurring in the 90 degree direction to the longitudinal axis of the vehicle (cornering), wherein the linear generator (7) contains an actuator (11), which is arranged on the actuator guide (11a) in an easily movable and preferably ball-bearing mounted manner, and a vacuum prevails in the preferably pressure-tight housing of the linear generator (7).