GB2503098A - An energy conversion arrangement for deployment on a vehicle - Google Patents
An energy conversion arrangement for deployment on a vehicle Download PDFInfo
- Publication number
- GB2503098A GB2503098A GB1308142.7A GB201308142A GB2503098A GB 2503098 A GB2503098 A GB 2503098A GB 201308142 A GB201308142 A GB 201308142A GB 2503098 A GB2503098 A GB 2503098A
- Authority
- GB
- United Kingdom
- Prior art keywords
- vehicle
- pressure
- arrangement
- casing
- energy conversion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 37
- 239000012530 fluid Substances 0.000 claims abstract description 28
- 239000000725 suspension Substances 0.000 claims description 11
- 238000004146 energy storage Methods 0.000 claims description 2
- 239000006096 absorbing agent Substances 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 238000005381 potential energy Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000003306 harvesting Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000002860 competitive effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
- B60G17/0195—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the regulation being combined with other vehicle control systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G13/00—Resilient suspensions characterised by arrangement, location or type of vibration dampers
- B60G13/14—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dampers accumulating utilisable energy, e.g. compressing air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
- B60G17/019—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the type of sensor or the arrangement thereof
- B60G17/01941—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the type of sensor or the arrangement thereof characterised by the use of piezoelectric elements, e.g. sensors or actuators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/08—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for recovering energy derived from swinging, rolling, pitching or like movements, e.g. from the vibrations of a machine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/40—Type of actuator
- B60G2202/42—Electric actuator
- B60G2202/424—Electric actuator electrostrictive materials, e.g. piezoelectric actuator
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2300/00—Indexing codes relating to the type of vehicle
- B60G2300/60—Vehicles using regenerative power
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Vehicle Body Suspensions (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Vibration Prevention Devices (AREA)
Abstract
An energy conversion arrangement 10 for deployment on a vehicle is provided. The arrangement 10 comprises: a housing 12; and at least one piezoelectric element 14. The piezoelectric element 14 is arranged inside the housing 12 on at least one wall of the housing 12. The energy conversion arrangement 10 further comprises an elastic casing 16 which is arranged inside the housing 12. An expansion of the casing 16 is caused by supplying a fluid to an inside of the casing 16 via pressurised tubes 18 in such a way that a deformation of the at least one piezoelectric element 14 is effectable by the expansion of the casing 16 to generate electrical energy.
Description
Energy conversion arrangement and vehicle The invention relates to an energy conversion arrangement according to the preamble of claim 1 as well to a vehicle with such an energy conversion arrangement.
The US 2010/0219721 Al describes an energy harvesting apparatus for deployment in a vehicle. Thereby a piezoelectric element is integrated in a shock absorber, especially as a part of a jounce bumper. A further energy harvesting apparatus is described in the US 2010/0219720 Al, with a piezoelectric element being arranged on spring assembly for compressions and extensions during vehicle travel. In these arrangements a deformation of the piezoelectric element can be caused by vehicle movement therefore inducing a voltage.
Moreover there are energy conversion arrangements with piezoelectric elements known from the art, by which piezoelectric elements are coupled with tires. The disadvantage of such arrangements is, that the extraction of power is difficult due to the dynamic of the tires and continuous wear and tear.
A further disadvantage of the energy conversion arrangements known from the art is, that only a little amount of energy can be provided. Furthermore in arrangements like for :.". example the integration of the piezoelectric element in shock absorbers the number of energy conversion arrangements is restricted as well as the dimensions of the piezoelectric element, which restricts the energy, that can be provided. * *. * S * S...
The problem to be solved by the present invention is to provide an energy conversion arrangement and a vehicle, which are subject to fewer restrictions concerning the amount * : of energy that can be provided. ** * *
This problem is solved by an energy conversion arrangement comprising the features of claim 1 as well as by a vehicle comprising the features of claim 5.
The energy conversion arrangement for deployment on a vehicle according to the invention comprises a housing and at least one piezoelectric element. The energy conversion arrangement is characterized in that the piezoelectric element is arranged inside the housing at least at part on at least one wall of the housing, wherein the energy conversion arrangement comprises an elastic casing, which is arranged inside the housing. Thereby an expansion of the casing is effectable by supplying a fluid into the casing in such a way, that a deformation of the at least one piezoelectric element is effectable by the expansion of the casing.
The dimensions of the energy conversion arrangement, especially those of the housing an the size or the amount of piezoelectric elements is not subject to restrictions, at least these dimensions are not restricted to a size in the order of a shock absorber or a spring assembly of a vehicle or a tire. The great advantage of that energy conversion arrangement results from the underlying principle, that the piezoelectric element can be deformed by supplying a fluid to an inside of a case and by the resulting expansion of this elastic case. In this way the deformation of the piezoelectric element has not to be coupled directly to a movement of the vehicle body, but is effected by the supply of the fluid, where there are advantageously a lot of possibilities of supplying the fluid.
According to an advantageous embodiment of the invention the energy conversion arrangement comprises at least one pressure tube, which is coupled to the casing * through an opening of the housing such, that the fluid is supplyable by the at least one pressure tube to the casing, wherein the at least one pressure tube is coupled to a pressure absorbing arrangement, which contains at least one part of the fluid and by which a pressure is exertable on the at least one part of the fluid such, that the fluid is pushable at least at part through the at least one pressure tube into the casing.
This embodiment has the advantage that a lot of pressure pipes an a lot of pressure absorbing arrangements can be used, so that a sufficient amount of pressure and fluid can be supplied to the inside of the casing, making it possible to provide a clearly greater amount of energy as usual. Additionally there are advantageously also a lot of possibilities of embodying the pressure absorbing arrangements.
According to a further advantageous embodiment of the invention the pressure absorbing arrangement is designed such, that by exerting an external force to at least one part of the pressure absorbing arrangement a pressure is exertable to the at least one pad of the fluid contained in the pressure absorbing arrangement.
For example the pressure absorbing arrangement may comprise a cylinder and a piston.
By an external force the piston can be pushed into the cylinder and the fluid inside the cylinder can be pushed through the pressure tube into the casing. This is a very simple and competitive embodiment of the pressure absorbing arrangement. At the same time there are advantageously many possibilities of exerting an external force to at least on part of the pressure absorbing arrangement. For example any kind of movement of components of a vehicle relative to each other can be used.
According to a further advantageous embodiment of the invention the energy conversion arrangement comprises an unidirectional valve coupled to the at least one pressure tube, wherein the unidirectional valve is arranged such, that the fluid is supplyable to the casing through the valve, On the one hand, by this embodiment it is made possible to ensure a minimum pressure inside the casing, so that there are only little increments of pressure necessary to affect a further expansion of the casing going along with a deformation of the piezoelectric element. On the other hand this has the advantage that e.g. the piezoelectric element can be kept deformed for at least a while, so that the resulting and dischargeable amount of energy can be used completely. Moreover in this way it is possible to provide a voltage by the piezoelectric element also under static conditions.
The vehicle according to the invention comprises an energy conversion arrangement according to the invention or one of the embodiments of the invention, wherein the energy conversion arrangement is coupled to an energy storage of the vehicle.
The vehicle can be e.g. an electricvehicle or a hybrid vehicle. Especially such vehicles *" are facing the issue of running for long distance due to the non-availability of continuous power. Furthermore high quantity storage of electric energy in a battery is very difficult due to expensiveness and weight. By the vehicle according to the invention and especially by the energy conversion arrangement according to the invention it is made possible to generate additional energy required to afford high ranges by utilizing the wasted potential r * :* energy of sprung mass under static and dynamic conditions of the vehicle. Besides the vehicle can be any kind of vehicle.
According to an advantageous embodiment of the vehicle according to the invention the pressure absorbing arrangement is at least coupled to a body in white of the vehicle such, that a force is exertable to the pressure absorbing arrangement by a movement of the body in white relative to at least one wheel axle.
The pressure absorbing arrangement can be arranged at any position between sprung and unsprung mass of the vehicle and therefore it is advantageously not subject to restrictions concerning a predetermined positioning like by embedding the piezoelectric element into a shock absorber.
According to a further advantageous embodiment of the vehicle according to the invention the pressure absorbing arrangement is coupled to a suspension of the vehicle.
The pressure absorbing arrangement can be mounted either parallel to the suspension or in series. The great advantage of this embodiment is that the piezoelectric element itself has not to be embedded into the suspension. Therefore the many degrees of freedom concerning the dimensioning and embodying of the housing together with the incorporated piezoelectric element are conserved and at the same time the movement of the suspension in combLnation with the pressure absorbing arrangement can be used advantageously for the conversion of energy.
Further advantages, features and details of the invention are provided by the claims the subsequent description of preferred embodiments as well as by the following drawings.
The figures show: Fig. I a schematical drawing of a pressure tank of a energy conversion arrangement according to an embodiment of the invention; te.* * . . * * Fig. 2 a schematical drawing ala pressure absorbing arrangement according to an embodiment of the invention; * * . . Fig. 3 a schematical drawing of a pressure absorbing arrangement integrated into a suspension according to an embodiment of the invention; and Fig. 4 a schernatical drawing of an installation lay out of the energy conversion arrangement into a vehicle.
Fig. 1 shows a schematical drawing of a pressure tank 10 of an energy conversion arrangement according to an embodiment of the invention. In particular it is a three layered pressure tank 10, where the outer layer is a housing designed as a metal shell 12, the middle layer is a piezoelectric element 14, e.g. a piezoelectric crystal, and the inner layer is a casing 16 made of elastic material.
The concept works under the principle of Piezoelectricity, so when ever a strain is induced on the piezoelectric crystal, electricity is generated, which is going to be extracted and stored continuously e.g. in battery for running the vehicle, by converting the potential energy of the vehicle (sprung mass).
Therefore the piezoelectric element 14 is arranged inside the metal shell 12 on the inner walls of the metal shell 12, wherein an expansion of the casing 16 is can be effectedby supplying a fluid to an inside of the casing 16 in such a way, that a deformation of the piezoelectric element 14 is effected by the expansion of the casing 16. The fluid can be supplied to the casing 16 by pressured tubes 18, which can be designed e.g. as metallic tubes. These pressure tubes 18 are coupled to the casing 16 with one end and the other end of each pressure tube 18 is coupled to a pressure absorbing arrangement 20 (cp. fig. 2). which can be mounted on mounting points of the body in white of a vehicle.
Fig. 2 shows a schematical drawing of a pressure absorbing arrangement 20 according to an embodiment of the invention. The pressure absorbing arrangement 20, as shown, is build as a piston cylinder arrangement, with a piston 24, comprising a plunger 26, and a cylinder 28. The cylinder 18 contains a fluid, in particular between the cylinder 26 and the piston 26. By pushing down the plunger 26, the fluid can be pressed out of the cylinder 28, particularly through an opening of the cylinder, and is supplied by a pressure tube 16 to the casing 16 of the pressure tank 10. This pressure absorbing arrangement can be mounted either parallel or in series to a suspension 30 (cp. fig. 3) of a vehicle, To avoid pressure loss, each pressure tube 18 can be provided with a unidirectional valve, which : can be arranged somewhere in the pressure tube 18 or at one end of the pressure tube 18, e.g. where the pressure tube 16 is coupled to the casing 16. The total system works as a closed system with the help of the pressure transmitter, particularly the fluid. * . . * 4
Fig. 3 shows a schematical drawing of a pressure absorbing arrangement 20 integrated into a suspension 30 according to an embodiment of the invention. The pressure absorbing arrangement 20 can again be build as a piston cylinder arrangement. By the movement of the suspension 30 the piston can be pushed down an the fluid, contained in the cylinder 28 cab be pressed out of the cylinder and supplied to the casing 16 by the pressure tube 18.
Fig. 4 shows a schematical drawing of an installation lay out of the energy conversion arrangement into a vehicle. The energy conversion arrangement comprises four pressure absorbing arrangements 20, which are mounted near the wheelaxles 32 of a vehicle, in particular in between the sprung and unsprung mass of the vehicle. Preferably the pressure absorbing arrangements 20 can be mounted either parallel or in series to suspensions 30 of the vehicle. Therefore the movement of the vehicle can be used to exert force on the pressure absorbing arrangements 20 to press out the fluid contained in the pressure absorbing arrangements, and to supply the fluid by the pressure pipes 18 to the casing 16 of the pressure tank 10. This pressure tank 10 can be mounted anywhere on the vehicle, preferably on the lower side of the vehicle.
When the vehicle is running, the upper body (sprung mass) oscillates due to road waviness and also during the braking. This oscillation needs to be converted from potential energy to electrical energy. This can be done by absorbing the pressure or force resulting from the oscillation of the vehicle by pressure absorbing arrangements 20, which can be mounted either parallel or in series to vehicle suspensions 30. When the vehicle oscillates, a load is exerted on the pressure absorbing arrangement 20 and this pressure is transmitted (without pressure drop-Pascal's law) by the pressure tubes 18 and the resulting expansion of the elastic casing 16 onto the piezoelectric element 14. This pressure induces a strain on the piezoelectric element 14, which in consequence produces electricity. This energy can be stored in a battery. e.g. through a plug in system.
So the energy conversion arrangement makes it possible to extend the range of an electric vehicle without hazardous emission, using the concept of potential energy conversion. 0* * * . * *
Claims (7)
- Claims Energy cànversion arrangement for deployment on a vehicle, comprising a housing (12) and at least one piezoelectric element (14)1 characterized in that the piezoelectric element (14) is arranged inside the housing (12) at least at part on at least one wall of the housing (12), wherein the energy conversion arrangement comprises an elastic casing (16), which is arranged insAde the housing (12), wherein an expansion of the casing (16) is effectable by supplying a fluid to an inside of the casing (16) in such a way, that a deformation of the at least one piezoelectric element (14) is effectable by the expansion of the casing (16).
- 2. Energy conversion arrangement according to claim 1 characterized in that the energy conversion arrangement comprises at least one pressure tube (18), which is coupled to the casing (16) through an opening of the housing (12) such, that the fluid is supplyable by the at least one pressure tube to the inside of the casing (16), wherein the at least one pressure tube (18) is coupled to an pressure absorbing arrangement (20), which contains at least one part of the fluid and by which a pressure is exertable on the at least one part of the fluid such, that the fluid is pushable at least at part through the at least one pressure tube (18) into the casing (16). * .* * * .
- 3. Energy conversion arrangement according to claim 2 characterized in that the pressure absorbing arrangement (20) is designed such, that by exerting an *:** external force to at least one part of the pressure absorbing arrangement (20) a pressure is exertabte to the at least one part of the fluid contained in the pressure absorbing arrangement.
- 4. Energy conversion arrangement according to claim 2 or 3, characterized in that the energy conversion arrangement comprises a unidirectional valve coupled to the at least one pressure tube (18), wherein the unidirectional valve is arranged such, that the fluid is supplyable to the inside of the casing through the valve.
- 5. Vehicle comprising an energy conversion arrangement according to one of the preceding claims, wherein the energy conversion arrangement is coupled to an energy storage of the vehicle.
- 6. Vehicle according to claim 5 characterized in that the pressure absorbing arrangement (20) is at least coupled to a body in white of the vehicle such, that a force is exertable to the pressure absorbing arrangement (20) by a movement of the body in white relative to at least one wheel axle (32).
- 7. Vehicle according to one of the claims 5 or 6, characterized in that the pressure absorbing arrangement (20) is coupled to a suspension of the vehicle. * * * * * ** ***** * * * ** * * * **** ** ** ** * * * *.*s.* * *
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1308142.7A GB2503098A (en) | 2013-05-03 | 2013-05-03 | An energy conversion arrangement for deployment on a vehicle |
DE102014006269.4A DE102014006269A1 (en) | 2013-05-03 | 2014-04-30 | Energy conversion arrangement and vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1308142.7A GB2503098A (en) | 2013-05-03 | 2013-05-03 | An energy conversion arrangement for deployment on a vehicle |
Publications (2)
Publication Number | Publication Date |
---|---|
GB201308142D0 GB201308142D0 (en) | 2013-06-12 |
GB2503098A true GB2503098A (en) | 2013-12-18 |
Family
ID=48627358
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1308142.7A Withdrawn GB2503098A (en) | 2013-05-03 | 2013-05-03 | An energy conversion arrangement for deployment on a vehicle |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE102014006269A1 (en) |
GB (1) | GB2503098A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014119552A1 (en) * | 2014-12-23 | 2016-06-23 | Endress + Hauser Flowtec Ag | Pressure fluctuation generator |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006102437A2 (en) * | 2005-03-24 | 2006-09-28 | Yale University | Power harvesting scheme based piezoelectricity and nonlinear deflections |
US20090043438A1 (en) * | 2007-08-06 | 2009-02-12 | Scott Douglas Redmond | Inflatable Electric and Hybrid Vehicle System |
US20100219721A1 (en) * | 2009-02-27 | 2010-09-02 | Gm Global Technology Operations, Inc. | Harvesting energy from vehicular vibrations using piezoelectric devices |
EP2415619A1 (en) * | 2010-08-05 | 2012-02-08 | Bridgeport S.R.L. | Self-powered sensing module and system for monitoring the conditions of the tyres of a vehicle provided with at least one self-powered sensing module |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8143766B2 (en) | 2009-02-27 | 2012-03-27 | GM Global Technology Operations LLC | Harvesting energy from vehicular vibrations using piezoelectric devices |
-
2013
- 2013-05-03 GB GB1308142.7A patent/GB2503098A/en not_active Withdrawn
-
2014
- 2014-04-30 DE DE102014006269.4A patent/DE102014006269A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006102437A2 (en) * | 2005-03-24 | 2006-09-28 | Yale University | Power harvesting scheme based piezoelectricity and nonlinear deflections |
US20090043438A1 (en) * | 2007-08-06 | 2009-02-12 | Scott Douglas Redmond | Inflatable Electric and Hybrid Vehicle System |
US20100219721A1 (en) * | 2009-02-27 | 2010-09-02 | Gm Global Technology Operations, Inc. | Harvesting energy from vehicular vibrations using piezoelectric devices |
EP2415619A1 (en) * | 2010-08-05 | 2012-02-08 | Bridgeport S.R.L. | Self-powered sensing module and system for monitoring the conditions of the tyres of a vehicle provided with at least one self-powered sensing module |
Also Published As
Publication number | Publication date |
---|---|
GB201308142D0 (en) | 2013-06-12 |
DE102014006269A1 (en) | 2014-11-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |