IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0664406
(2003-09-19)
|
등록번호 |
US-7261170
(2007-08-28)
|
우선권정보 |
DE-102 44 769(2002-09-26) |
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
8 인용 특허 :
10 |
초록
▼
A mobile machine, such as an industrial truck, includes at least two electrical drive systems (4, 5), at least one electrical control system (14) and at least one electrical power source (1). Excess electrical energy generated during deceleration of at least one of the electrical drive systems (4) i
A mobile machine, such as an industrial truck, includes at least two electrical drive systems (4, 5), at least one electrical control system (14) and at least one electrical power source (1). Excess electrical energy generated during deceleration of at least one of the electrical drive systems (4) is fed to at least one other electrical drive system (5).
대표청구항
▼
What is claimed is: 1. A battery operated industrial truck, comprising: at least two electrical drive systems, a first electrical drive system used as a traction drive system for driving the industrial truck, and a second electrical drive system used for operating a hydraulic system connected to hy
What is claimed is: 1. A battery operated industrial truck, comprising: at least two electrical drive systems, a first electrical drive system used as a traction drive system for driving the industrial truck, and a second electrical drive system used for operating a hydraulic system connected to hydraulic consumers of the industrial truck; at least one electrical control system for the first electrical drive system and the second electrical drive system; and at least one electrical power source, wherein during deceleration of the first electrical drive system, at least a portion of the electrical energy generated by the first electrical drive system being decelerated is supplied to the second electrical drive system through the electrical control system to operate the second electrical drive system rather than being sent to an energy storage mechanism and to dissipate through the hydraulic system when the second electrical drive system no longer requires electrical energy. 2. The industrial truck as claimed in claim 1, further comprising an electrical energy storage mechanism, wherein the first electrical drive system being decelerated is effectively connected with the electrical energy storage mechanism which is configured to absorb at least a portion of the energy generated during braking or deceleration of the first electrical drive system; and wherein the electrical control system further includes means for detecting the operation of the second electrical drive system and the operation of the electrical energy storage mechanism and for selectively diverting the energy generated by the first electrical drive system being decelerated to the electrical energy storage mechanism when the second electrical drive system does not require energy for its normal operation, and to the second electrical drive system when the second electrical drive system does require energy for its normal operation. 3. The industrial truck as claimed in claim 2, wherein the electrical energy storage mechanism is charged by the first electrical drive system being decelerated only with the amount of energy that is not required to power normal operation of the second electrical drive system, and wherein the electrical control system further includes means for selectively diverting the energy generated by the first electrical drive system being decelerated from the electrical energy storage mechanism back to the first electrical drive system when the first electrical drive system requires energy. 4. The industrial truck as claimed in claim 2, wherein the second electrical drive system, if it is not already in operation, is activated to absorb energy only when the electrical energy storage mechanism is fully charged. 5. The industrial truck as claimed in claim 1, wherein the second electrical drive system is effectively connected with the hydraulic system by a hydraulic pump. 6. The industrial truck as claimed in claim 5, wherein the hydraulic system includes a pressure reducing valve, and wherein the energy introduced into the hydraulic system by the second electrical drive system is converted into thermal energy by the pressure reducing valve. 7. The industrial truck as claimed in claim 5, wherein the hydraulic system includes a hydrodynamic braking device, and wherein the energy introduced into the hydraulic system by the second electrical drive system is converted into thermal energy by the hydrodynamic braking device. 8. The industrial truck as claimed in claim 1, wherein the electrical power source includes at least one fuel cell system. 9. The industrial truck as claimed in claim 1, wherein the electrical power source includes a heat engine with a connected generator. 10. The industrial truck as claimed in claim 2, wherein the electrical energy storage mechanism is a high-capacity capacitor. 11. The industrial truck as claimed in claim 3, wherein the second electrical drive system, if it is not already in operation, is activated to absorb energy only when the electrical energy storage mechanism is fully charged. 12. The industrial truck as claimed in claim 9, wherein the heat engine is an internal combustion engine.
이 특허에 인용된 특허 (10)
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Sauka Klaus (Crailsheim DEX) Muschelknautz ; deceased Horst (late of Crailsheim ; DEX by Ingeborg Muschelknautz), Braking system utilizing both a dynamic and a mechanical brake.
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Shimabukuro, Eijiro; Morishita, Naohisa, Control system for hybrid vehicle.
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Kotake Nobukazu,GBX ; Wallace Donald Innes,GBX, Control system for hydraulic drive.
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Ralf Baginski DE; Rainer Bruns DE, Driving system for an industrial truck.
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Baginski, Ralf; Bruns, Rainer, Driving system for industrial trucks.
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Guy Nathan FR; Paul Berneuil FR, Electro-hydraulic vehicle with energy regeneration.
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Schmidt Michael Roland, Electro-mechanical powertrain.
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Kotre, Stephen John; Ramaswamy, Deepa; Woestman, Joanne Theresa; Breida, Mary Theresa, Engine on idle arbitration for a hybrid electric vehicle.
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Lateur Michel J. ; Pliskin Daniel P., Hybrid parallel electric vehicle.
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Baumert, Rob; Greenhill, Craig; Hastings, Robert; Smith, Jim, Vehicle with a fuel cell system and method for operating the same.
이 특허를 인용한 특허 (8)
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Ichijo, Hisashi; Ieoka, Shoichi; Kato, Norihiko; Sugai, Masaru; Umeno, Takaji, Hybrid-type forklift.
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Akaki, Tomohiro; Futahashi, Kensuke; Hiroe, Takaharu; Ogawa, Kiyomitsu; Okazaki, Yoshimi, Industrial vehicle and power control method for the same.
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Stansbury, III, James A., Regenerative suspension with accumulator systems and methods.
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Stansbury, III, James A., Regenerative suspension with accumulator systems and methods.
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Stansbury, III, James A., Regenerative suspension with accumulator systems and methods.
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Hoffmann, Sebastien Nicolas; Richthammer, Burkhard Emanuel; Sommer, Bernd; Duelli, Stefan; Merkle, Markus; Resch, Juergen, Self-propelling work machine and method for braking such a work machine.
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Merkle, Markus; Resch, Juergen; Hoffmann, Sebastien Nicolas; Richthammer, Burkhard Emanuel; Sommer, Bernd; Duelli, Stefan, Self-propelling work machine and method for braking such a work machine.
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Bay, Tod A., System for recovering or converting energy for equipment having a movable implement and method.
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