WO2009112477A1 - Vorrichtung zur energieerzeugung in einem rotierenden system - Google Patents
Vorrichtung zur energieerzeugung in einem rotierenden system Download PDFInfo
- Publication number
- WO2009112477A1 WO2009112477A1 PCT/EP2009/052761 EP2009052761W WO2009112477A1 WO 2009112477 A1 WO2009112477 A1 WO 2009112477A1 EP 2009052761 W EP2009052761 W EP 2009052761W WO 2009112477 A1 WO2009112477 A1 WO 2009112477A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fibers
- tire
- piezoceramic
- charge
- electrical energy
- Prior art date
Links
- 238000012545 processing Methods 0.000 claims abstract description 3
- 239000000835 fiber Substances 0.000 claims description 89
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000001125 extrusion Methods 0.000 claims description 3
- 238000006386 neutralization reaction Methods 0.000 claims description 2
- 235000012431 wafers Nutrition 0.000 claims 1
- 230000001133 acceleration Effects 0.000 abstract description 15
- 239000002131 composite material Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
- B60C23/041—Means for supplying power to the signal- transmitting means on the wheel
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
Definitions
- the invention relates to a device for generating electrical energy in a rotating system for supplying power to electronic components in the system, with external forces acting on the system acting on piezoelectrically active energy converters in the system, whereby electrical energy is generated, and with an electronics for processing the electrical energy generated and forwarding these to the components.
- Such a device is known from DE 603 10 104 T2.
- a piezoelectric element and an actuating mass provided for contact with the piezoelectric element and a control circuit which is in electrical connection with the piezoelectric element are arranged in the interior of a tire or pneumatic tire.
- the actuating mass is provided for deflecting the piezoelectric element as a result of external forces acting on the actuating mass in use to generate an electrical charge. This electrical charge or energy is provided by the control circuit components.
- a disadvantage of this is that the piezoelectric element and the actuating mass are heavy and affects the rotating system or the tire in its rotational properties.
- this device can not usually provide sufficient energy to provide, for example, sensors and transmission elements permanently and reliably, while also working under extreme acceleration ratios of some 10,000 g reliably and over a long life.
- capacitive and inductive systems for energy transmission, and batteries or accumulators for energy storage systems on piezoceramic basis known, depending on the design - for example in the execution as a mass oscillator - relatively sensitive to the forces and deformations occurring in a tire as a rotating system during of operation, which can lead to the rapid destruction of the components.
- the invention has for its object to improve a device according to the preamble of claim 1 so that the system is influenced as little as possible in its rotational properties.
- the device should provide as much energy as possible in order, for example, to supply sensors and transmission elements permanently and reliably, while also functioning reliably under extreme acceleration conditions of a few 10,000 g and over a long service life.
- the piezoelectrically active energy converters are piezoceramic fibers, each having an electrode and the electrodes of the fibers, which generate a charge of the same polarity, are connected via an electrically conductive outer electrode.
- the external forces acting on the system cause changes in the acceleration during operation, causing the fibers to deform for a short time and generate electrical charges. These charges are tapped and provided as electrical energy to the components.
- Piezoceramic fibers are light, so that the system is virtually unaffected in its rotational properties.
- enough energy can be made available to sensors and transmission elements permanently and reliably and to function reliably under extreme acceleration conditions of some 10,000 g and over a long service life.
- the rotating system is a tire, in particular for a motor vehicle.
- the fibers are mechanically decoupled from each other, whereby each fiber contributes to the charge generation.
- the piezoceramic fibers are attached to or integrated with the inside of the rotating system and with a tire on the inside of the tread. As a result, they are deformed directly by the forces acting from outside. If they are integrated into the tread, this can already happen during tire manufacture and is not visible to the customer. In addition, the fibers are then protected.
- the fibers are preferably arranged transversely to the running surface of the rotating system or tire and preferably parallel to each other. This has the advantage that the fibers are more stable to deformations of the system or tire and more easily withstand these stresses.
- the fibers have a diameter of 0.01 mm - 5 mm, preferably from 0.05 mm - 2 mm, particularly preferably 0.1 mm - 0.5 mm. At these diameters, the fibers are stable on the one hand and generate enough fertilizer on the other hand.
- the fibers are produced by extrusion. As a result, they are particularly cost-effective and can be produced in any desired length. - A -
- the fibers can also be made by sawing a plate-shaped piezoceramic disk.
- the fibers generally have a rectangular or square cross-section. The preferred dimensions apply here accordingly.
- the fibers for deriving the resulting charges via a highly flexible, three-dimensionally structured, metallic outer electrode are connected to groups of fibers, which is not destroyed by the force acting on the system or the tire forces and deformations.
- the outer electrode consists of a fine wire mesh.
- a wire mesh is highly flexible, three-dimensional structured and metallic.
- the spacing of the fibers or the groups of fibers is selected such that the generated charge of individual fibers or groups of fibers never at the same time have the opposite polarity. As a result, the charges increase and do not cancel each other.
- the fibers or groups of fibers which produce a charge of the same polarity are electrically combined and connected to a separate rectifier circuit so that neutralization of the charges is avoided.
- the piezoelectric fibers can preferably also be produced by the fibers being in the unused new state, ie as blanks being piezoceramic plates or platelets which are mechanically processed during the production process in such a way that they are automatically transformed into defined fibers during production or during operation break.
- the Plates or plates are provided with embossments along which the plates or plates can break.
- the device is preferably used for measuring the tire pressure and / or for determining the roadway and / or driving dynamics properties of a motor vehicle.
- the signal (charge) measured with the device can be compared with a setpoint value and a signal can be displayed if it exceeds or falls below the setpoint. For example, too low air pressure in the tire would cause a signal that deviates from the setpoint.
- the invention is characterized in a preferred embodiment in that on an inner surface of the tire tread piezoelectrically active components, in particular piezoceramic fibers are integrated, which generate electric charges due to the acceleration changes in operation, and also due to their arrangement transverse to the direction of relatively large me- survive mechanical deformations of the tire.
- fibers or piezoceramic fibers is meant a thin and flexible structure in relation to the length.
- Fiber is also understood to mean a composite of fibers which forms a specific fiber structure.
- the cross-section of the fibers can be of any desired design and, for example, round or angular or a combination thereof.
- a structure of fibers is stronger and often stiffer than a construction of the same shape from the compact material "from the solid".
- a variant of the device according to the invention in a tire for motor vehicles is that over the circumference of the tire inner surface piezoelectric fiber structures are arranged, which rotate with the tire. These fiber structures are connected via electrical contacts in conjunction with an electronic unit that can access, store, manage and provide the generated energy.
- Acceleration forces effective according to the invention always arise when the tread of the tire comes into contact with the roadway.
- the tire is deformed and thus disturbed its uniform circular motion. This leads to changes in acceleration occurring, which are accompanied by impulses to the piezoceramic components and cause the charge separation according to the invention.
- Decisive for the high acceleration values and thus for a significant charge generation is mainly the length of the time interval ⁇ t, in which the tread of the tire is deformed and thus the direction of movement of the fibers is changed.
- Fig. 1 shows the basic time course of a point on the tread of a tire of a motor vehicle in the y-direction with the area of impact with the road. Thus, approximately the course of movement of a point on the tread is shown in Fig. 1.
- the tire rotates uniformly, in the area II it begins to deform and strikes the road and in area III it is in contact with the roadway.
- the acceleration values to which the piezoelectric components are exposed in region II are proportional to 1 / ( ⁇ t) 2 ( ⁇ t indicates the time interval in which the tread of the tire deforms and thus the tire Direction of movement of the fibers is changed).
- this time interval .DELTA.t can be extremely short, so that accelerations of the order of magnitude of 10,000 g occur.
- a first estimate of the charge to be generated at these high accelerations can be made as follows:
- the piezoceramic components are designed as fibers, e.g. as a cylinder with diameters in the order of 100 microns.
- Such fibers can be produced relatively inexpensively and in large series, for example by means of an extrusion process or bring into shape. With the methods and processes known in the ceramic industry, these fibers can be operated in electrical mode and polarity in the d 33 mode, which ensures a high energy yield. Of course, other dimensions and geometries are conceivable and may be advantageous depending on the application, for example, cuboid fibers or the like.
- Such patches are also known as Macro Fiber Composites (MFC).
- MFC Macro Fiber Composites
- the great advantage of the fiber structures is that they can withstand the relatively high deformations when the tread strikes the road surface and are less prone to mechanical failure.
- the fiber regions are narrower than the footprint of the tire.
- the generated charge is not compensated by the symmetrical but opposite processes when hitting the tire surface and when removing the tire surface from the road.
- the fiber regions extend completely or more or less continuously over the inner surface.
- the spacing of the individual patches can also be regulated so that a group of patches in the above sense is sufficient.
- continuous piezoceramic plates or plates of corresponding geometry would also be suitable. Although these would - as already mentioned - be destroyed during operation, but the function of the invention could be maintained by a suitable contact.
- a suitable contacting could be formed by a kind of flexible, electrically conductive network on these plates, which survives the high deformations in the operation of the tire.
- the device is used for measuring the tire pressure and / or for determining the roadway and / or driving dynamics properties.
- FIG. 3 shows the fibers 5 or fiber structures according to the invention, each having one electrode 6 and the associated outer electrode 7.
- the rotating system 1 is a tire for a vehicle, preferably a motor vehicle or a motorcycle, with a tread 8, a side surface 11 of a rubber-like composite material according to the prior art.
- the direction of rotation 9 on the roadway 10 is indicated by an arrow.
- piezoceramic fiber structures or fibers 5 (see Figure 3) are admitted, act on the operation of different strengths acceleration forces. This results in charges that can be stored and controlled via the electronics and control unit 4 electrically connected to the fibers.
- the electronic and control units 4 are located on the inside of the tread 8, that is, where the fiber structures or fibers 5 are arranged.
- sensor elements 2 for measuring the tire pressure or other sensors or even communication elements 3 or other electronic components can be supplied.
- the fibers 5 are connected to groups of fibers 5, as shown in Figure 3 in four groups and are not destroyed by the force acting on the tire and deformations.
- the piezoelectric fibers 5 do not necessarily have to be divided into four groups or partial regions; they may be any number or even only one region. It is important that, irrespective of the number or dimension of these areas, these areas are electrically separated into individual subareas. The reason for this is that the effects of charge generation can otherwise cancel out, due to direction-dependent processes when the tread strikes the road and when the tread separates from the road.
- FIG. 3 shows a section of three fibers 5, each having an electrode 6. Via an outer electrode 7, the electrodes 6 are electrically connected to each other.
- the outer electrode 7 consists of a fine wire mesh, which highly flexible, three-dimensionally structured and consists of a metal and is arranged above and / or below the fibers.
- the fibers 5 may be glued, baked or soldered onto the electrodes 6.
- the electrical wiring could be such that the individual fibers 5, fiber regions or fiber structures are electrically connected to each other via the outer electrode 7 and to the unit 6, sensor 2 for detecting the air pressure and the communication element 3, for example by cables laminated into the tire or other tracks.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Ac-Ac Conversion (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/921,675 US8365589B2 (en) | 2008-03-10 | 2009-03-10 | Device for generating energy in a rotating system |
DK09721014.0T DK2268494T3 (da) | 2008-03-10 | 2009-03-10 | Indretning til at generere energi i et roterende system |
CN2009801168543A CN102026833A (zh) | 2008-03-10 | 2009-03-10 | 用于在旋转系统中产生能量的装置 |
JP2010550167A JP2011517396A (ja) | 2008-03-10 | 2009-03-10 | 回転系内の電気エネルギの形成装置 |
AT09721014T ATE541720T1 (de) | 2008-03-10 | 2009-03-10 | Vorrichtung zur energieerzeugung in einem rotierenden system |
EP09721014A EP2268494B1 (de) | 2008-03-10 | 2009-03-10 | Vorrichtung zur energieerzeugung in einem rotierenden system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008013498 | 2008-03-10 | ||
DE102008013498.8 | 2008-03-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009112477A1 true WO2009112477A1 (de) | 2009-09-17 |
Family
ID=40578371
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2009/052761 WO2009112477A1 (de) | 2008-03-10 | 2009-03-10 | Vorrichtung zur energieerzeugung in einem rotierenden system |
Country Status (8)
Country | Link |
---|---|
US (1) | US8365589B2 (de) |
EP (1) | EP2268494B1 (de) |
JP (1) | JP2011517396A (de) |
CN (1) | CN102026833A (de) |
AT (1) | ATE541720T1 (de) |
DE (1) | DE102009001424A1 (de) |
DK (1) | DK2268494T3 (de) |
WO (1) | WO2009112477A1 (de) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7814781B2 (en) * | 2008-03-17 | 2010-10-19 | Infineon Technologies, Ag | Active and adaptive tire systems |
US8841785B2 (en) * | 2008-04-15 | 2014-09-23 | Infineon Technologies Ag | Energy harvester |
DE112009005383T5 (de) * | 2009-11-17 | 2012-09-13 | Urban Environment Engineering Co. Ltd. | Generatorvorrichtung für ein Fahrzeug |
US9001626B1 (en) * | 2011-03-11 | 2015-04-07 | Rockwell Collins, Inc. | Piezoelectric acceleration timer |
CN102957338A (zh) * | 2011-08-29 | 2013-03-06 | 文仁信 | 车辆上的压电发电装置 |
JP5921290B2 (ja) * | 2012-03-30 | 2016-05-24 | 国立大学法人 東京大学 | タイヤ振動特性検知方法、及び、タイヤ振動特性検知装置 |
KR101915064B1 (ko) * | 2012-08-23 | 2018-11-05 | 삼성전자주식회사 | 플렉서블 장치 및 그 동작 방법 |
CN102795062B (zh) * | 2012-08-29 | 2015-04-08 | 河北永发耐磨拉轮胎制造有限公司 | 一种防爆轮胎及制造该防爆轮胎的方法 |
JP5947698B2 (ja) * | 2012-10-23 | 2016-07-06 | 住友ゴム工業株式会社 | タイヤ発電装置 |
CN103786535B (zh) * | 2012-11-05 | 2018-07-27 | 杨红光 | 相对旋转体间电量传输电路 |
CN102937137B (zh) * | 2012-11-20 | 2015-01-14 | 浙江大学 | 压电发电滚动轴承单元 |
CN103888021B (zh) * | 2014-02-26 | 2015-10-28 | 浙江大学 | 基于轮胎气门嘴的能量采集系统及方法 |
KR101557245B1 (ko) * | 2014-12-03 | 2015-10-21 | 성균관대학교산학협력단 | 타이어 코드지용 섬유를 이용한 정전기 에너지 발생장치 |
CN105616080A (zh) * | 2016-04-06 | 2016-06-01 | 陕西科技大学 | 一种新型电热轮椅 |
DE112017005345T5 (de) * | 2016-10-24 | 2019-07-18 | Mario Smiljanić | Ultraschallgreifsystem |
CN108058546B (zh) * | 2017-12-18 | 2020-05-19 | 刘利忠 | 一种基于轮胎形变利用介电弹性体发电的防爆轮胎 |
DE202018001843U1 (de) | 2018-04-12 | 2018-04-30 | Rudi Danz | Multifunktionale Module zur Erzeugung elektrischer Energie auf Verkehrswegen für die Elektromobilität |
US11791748B2 (en) * | 2019-07-24 | 2023-10-17 | Tdk Corporation | Smart wheel energy harvester |
JP2022093421A (ja) | 2022-04-19 | 2022-06-23 | 雄三 安形 | 発電機能付きタイヤ及びそれを装着した車両 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US20040078662A1 (en) * | 2002-03-07 | 2004-04-22 | Hamel Michael John | Energy harvesting for wireless sensor operation and data transmission |
EP1605528A2 (de) * | 2004-06-10 | 2005-12-14 | Société de Technologie Michelin | Piezoelektrische Keramikfasern mit metallischem Kern |
EP1650057A2 (de) * | 2004-10-20 | 2006-04-26 | Société de Technologie Michelin | System und Verfahren zur Erzeugung elektrischer Leistung aus der mechanischen Energie eines drehenden Reifens |
US20060260390A1 (en) * | 2005-05-19 | 2006-11-23 | Oguzhan Oflaz | Tire monitor and method |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7549327B2 (en) * | 2001-02-16 | 2009-06-23 | Automotive Technologies International, Inc. | Tire-mounted energy generator and monitor |
US7603894B2 (en) * | 2000-09-08 | 2009-10-20 | Automotive Technologies International, Inc. | Self-powered tire monitoring system |
US5644184A (en) * | 1996-02-15 | 1997-07-01 | Thermodyne, Inc. | Piezo-pyroelectric energy converter and method |
GB0222680D0 (en) | 2002-10-01 | 2002-11-06 | Haswell Moulding Technologies | Power generation |
JP2005024385A (ja) * | 2003-07-02 | 2005-01-27 | Matsushita Electric Ind Co Ltd | 感圧センサ |
KR101023712B1 (ko) * | 2003-12-29 | 2011-03-25 | 피렐리 타이어 소시에떼 퍼 아찌오니 | 차량 타이어 내에서 전기 에너지를 생산하는 방법 및시스템 |
EP1993857B1 (de) * | 2006-03-02 | 2016-10-26 | Continental Teves AG & Co. oHG | Reifenmodul mit piezoelektrischem wandler |
US20080252174A1 (en) * | 2007-04-10 | 2008-10-16 | Advanced Cerametrics, Inc. | Energy harvesting from multiple piezoelectric sources |
DE102008012659B4 (de) * | 2007-04-16 | 2019-02-21 | Continental Teves Ag & Co. Ohg | Reifenmodul mit piezoelektrischem Wandler |
US8011237B2 (en) * | 2008-02-22 | 2011-09-06 | Hong Kong Applied Science And Technology Research Institute Co., Ltd. | Piezoelectric module for energy harvesting, such as in a tire pressure monitoring system |
TWI438337B (zh) * | 2008-10-08 | 2014-05-21 | Ind Tech Res Inst | 擺動裝置及其獵能裝置 |
-
2009
- 2009-03-10 DE DE102009001424A patent/DE102009001424A1/de not_active Withdrawn
- 2009-03-10 JP JP2010550167A patent/JP2011517396A/ja active Pending
- 2009-03-10 AT AT09721014T patent/ATE541720T1/de active
- 2009-03-10 EP EP09721014A patent/EP2268494B1/de not_active Not-in-force
- 2009-03-10 DK DK09721014.0T patent/DK2268494T3/da active
- 2009-03-10 CN CN2009801168543A patent/CN102026833A/zh active Pending
- 2009-03-10 US US12/921,675 patent/US8365589B2/en not_active Expired - Fee Related
- 2009-03-10 WO PCT/EP2009/052761 patent/WO2009112477A1/de active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040078662A1 (en) * | 2002-03-07 | 2004-04-22 | Hamel Michael John | Energy harvesting for wireless sensor operation and data transmission |
EP1605528A2 (de) * | 2004-06-10 | 2005-12-14 | Société de Technologie Michelin | Piezoelektrische Keramikfasern mit metallischem Kern |
EP1650057A2 (de) * | 2004-10-20 | 2006-04-26 | Société de Technologie Michelin | System und Verfahren zur Erzeugung elektrischer Leistung aus der mechanischen Energie eines drehenden Reifens |
US20060260390A1 (en) * | 2005-05-19 | 2006-11-23 | Oguzhan Oflaz | Tire monitor and method |
Also Published As
Publication number | Publication date |
---|---|
US20110011172A1 (en) | 2011-01-20 |
EP2268494A1 (de) | 2011-01-05 |
ATE541720T1 (de) | 2012-02-15 |
CN102026833A (zh) | 2011-04-20 |
JP2011517396A (ja) | 2011-06-02 |
US8365589B2 (en) | 2013-02-05 |
EP2268494B1 (de) | 2012-01-18 |
DK2268494T3 (da) | 2012-05-14 |
DE102009001424A1 (de) | 2009-09-17 |
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