WO2011000818A2 - Vorrichtung zur gewinnung elektrischer energie in einem motorbetriebenen fahrzeug - Google Patents
Vorrichtung zur gewinnung elektrischer energie in einem motorbetriebenen fahrzeug Download PDFInfo
- Publication number
- WO2011000818A2 WO2011000818A2 PCT/EP2010/059179 EP2010059179W WO2011000818A2 WO 2011000818 A2 WO2011000818 A2 WO 2011000818A2 EP 2010059179 W EP2010059179 W EP 2010059179W WO 2011000818 A2 WO2011000818 A2 WO 2011000818A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- coolant
- vehicle
- heat exchanger
- heat
- engine
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K11/00—Arrangement in connection with cooling of propulsion units
- B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
- B60K11/04—Arrangement or mounting of radiators, radiator shutters, or radiator blinds
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
- H10N10/10—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects
- H10N10/13—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects characterised by the heat-exchanging means at the junction
Definitions
- the invention relates to a device for obtaining electrical energy in a motor vehicle, comprising a thermoelectric generator unit having at least one thermoelectric module which thermally contacts one side with a heat source and the other side with a coolant circuit.
- Thermoelectric generators for generating electrical energy by utilizing a temperature difference, in which, for example, the exhaust heat of an internal combustion engine is utilized, have been known for some time.
- the thermoelectric module of such generator units consists of a series of p- and n-doped legs, which are provided at the ends with electrical contacts.
- the Seebeck effect is utilized in which the temperature difference between two ends (a high-temperature section and a low-temperature section) of a metal or semiconductor part causes a potential difference.
- thermoelectric generator for an internal combustion engine
- the generator has a hot side, which is associated with the exhaust duct and a cool side (coolant heat exchanger), which communicates with the cooling circuit of the internal combustion engine.
- coolant heat exchanger coolant heat exchanger
- a disadvantage is the fact that the vehicle radiator on the thermoelectric generator unit, a relatively large heat load is supplied, which means that the vehicle radiator must be larger in size to dissipate the additional heat load. Since the internal combustion engine coolant typically has a temperature of 90 ° C.-110 ° C. during operation, the usable enthalpy gradient for the TEG unit and the Carnot efficiency are disadvantageously reduced.
- DE 10 2006 057 662 A1 discloses a vehicle with a thermoelectric generator, in which a heat exchanger through which the exhaust gas flows is used as the heat source and cooling air flows through or flows through the cooling elements of the thermoelectric generator.
- the heat exchanger elements and the cooling elements of the thermoelectric generator are formed by flat tubes which are alternately stacked one above the other, wherein the tubes forming the cooling elements are arranged substantially transversely to the heating elements forming the tubes.
- the air- entry for the radiator elements is arranged for example in the underbody area of the vehicle.
- thermoelectric generator directly to a heat-emitting component, such as the vehicle engine, arranged and thermally conductively connected thereto.
- the heat sink of the thermoelectric generator is realized either by cooling fins, which are acted upon by the wind, or is e.g. connected to a liquid flowing through the cooling circuit of the vehicle.
- the air intakes on the vehicle front must be increased, whereby the cw value of the vehicle is deteriorated
- there is an increased heat input into the cooling circuit of the vehicle whereby it must be dimensioned correspondingly larger.
- the object of the invention is to improve a device for obtaining electrical energy in a motor-driven vehicle such that sufficient cooling of the low-temperature side of the thermoelectric generator unit can be provided without significantly deteriorating the aerodynamic values of the vehicle or without additional active components such To install fans, pumps, etc.
- this object is achieved in that one of a possible coolant circuit for engine or oil cooling of the vehicle independent coolant circuit is provided for dissipating heat energy in a body part of the vehicle, wherein on the vehicle interior facing side of the body part by means of thermally conductive contact elements in the Coolant circuit integrated coolant heat exchanger is arranged.
- the heat dissipated by the thermoelectric module is introduced into existing, largely aerodynamically optimized body parts of the vehicle, so that the cw value is not adversely affected thereby.
- Another advantage of an engine cooling independent cooling circuit is that a low temperature circuit with an operating temperature range of 30 0 C to 50 0 C, instead of the usual 95 ° C, can be used. As a result, it is possible to use conventional refrigerants which undergo a liquid / gas phase change during operation, whereby the effect of nucleate boiling can be utilized for efficient heat transfer.
- the rear wall of the vehicle roof or the wheel well can be used.
- the coolant heat exchanger for using the convective circulation of the coolant to a coolant inlet which is arranged geodetically above the thermoelectric unit and the heat source, wherein a riser is provided, the coolant outlet of the thermoelectric generator unit with the coolant inlet of the coolant heat exchanger combines.
- the thermosyphon principle can be exploited, so that no active components such as pumps, etc. are necessary for the transport of the coolant.
- thermosiphon principle is known in another context from DE 34 07 521 C1 and is used here to maintain a cooling circuit for a turbocharger after stopping the internal combustion engine by a thermosiphon effect.
- the removal of the heat energy takes place here, however, in the engine cooling circuit, so that the disadvantages mentioned above occur.
- thermosyphon Another application of a thermosyphon is known from WO 2008/025707 A1, in which a thermoelectric generator in an internal combustion engine and means for limiting the temperature of the generator are shown.
- the thermosyphon is here - in contrast to the invention - arranged on the high-temperature side of the thermoelectric generator unit and serves to avoid too high temperatures for the used here TEG Any material with a relatively low maximum temperature of about 350 0 C.
- Fig. 1 shows an inventive device for obtaining electrical
- Fig. 2 is a detail section along line H-II in Fig. 1;
- FIG. 3 shows a detail section along the line III-III in Fig. 1.
- Fig. 4 shows an application of the thermosiphon principle for dissipating heat energy of an EGR system in a truck.
- the device according to the invention shown schematically in FIG. 1 and the details according to FIG. 2 and FIG. 3 is installed in a motor vehicle 10 with an internal combustion engine 11 and serves to recover electrical energy from the waste heat of the exhaust system.
- thermoelectric generator unit 1 is arranged in the exhaust gas line 12, for example in the flow direction, according to a device 13 for exhaust gas aftertreatment.
- the thermoelectric generator unit 1 has a plurality of thermoelectric modules 2 which thermally contact with one side a heat source 3 (here in the form of the exhaust gas heat exchanger 3 ') and with the opposite side a coolant of a coolant circuit 4.
- the coolant circuit 4 does not load the existing cooling water circuit 20 of the vehicle 10 but is connected to dissipate heat energy with a body part 5 of the vehicle 10, said body part 5 (for example, a side wall, rear wall, roof area or the wheel arch of the car) of the ambient air or is exposed to the wind, so that is provided for an effective heat dissipation.
- the heat energy is emitted into the body part 5 with the aid of a coolant heat exchanger 6, which is arranged on the side 7 of the body part 5 facing the vehicle interior by means of thermally conductive contact elements 8 (see FIG.
- the operation of the coolant circuit 4 preferably takes place without active circulation means according to the functional principle of the thermosyphon, the body-side coolant heat exchanger 6 for utilizing the convective circulation of the coolant having a coolant inlet 9, which is arranged above the thermoelectric generator unit 1.
- a riser 14 is provided, which connects the coolant outlet 15 in the upper region of the thermoelectric generator unit 1 with the coolant inlet 9 of the coolant heat exchanger 6.
- the coolant heat exchanger 6 has a meandering in the flow direction of the coolant falling heat exchanger tube 16, which opens via a connection or downpipe 17 into the coolant inlet 18 in the lower region of the thermoelectric generator unit 1.
- the coolant heat exchanger 6 may also consist of a plurality of heat exchanger tubes arranged in parallel.
- the heat source used is an exhaust gas heat exchanger 3 'through which the exhaust gas of the internal combustion engine 11 of the vehicle 10 flows; however, within the scope of the invention it is also possible to use a heat-emitting component of the drive unit such as engine, oil sump, etc. as the heat source 3 with its surface the thermoelectric module 2 of the generator unit 1 is in direct thermal contact.
- a heat-emitting component of the drive unit such as engine, oil sump, etc.
- the coolant circulating in the coolant circuit 4 may preferably be a coolant, for example a coolant used in vehicle air conditioning systems, which during operation undergoes a liquid / gaseous phase change.
- the liquid level 19 is indicated by dashed lines in the generator unit 1.
- the evaporating in the generator unit 1 refrigerant rises in the riser 14, condenses with heat to the body part 5 and flows through the downcomer 17 back into the generator unit. 1
- thermoelectric generator unit not shown here, may be arranged.
- the dissipated through the vehicle radiator heat output without activation of the vehicle radiator fan is around 100 KW. This value is often exceeded as a result of ever higher exhaust gas recirculation rates to meet increasingly stringent exhaust emissions regulations.
- EURO6 engines it comes even in the operation of long-distance commercial vehicles in countries without mountain routes already to activation rates of vehicle cooling fans in the range of 10%.
- the resulting increased fuel consumption is at least 1% - 2%.
- a part of the cooling power is now delivered via the vehicle outer skin, whereby the frequency of the cooling fan activation and the associated additional fuel consumption can be substantially reduced.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112010002793T DE112010002793A5 (de) | 2009-07-02 | 2010-06-29 | Vorrichtung zur gewinnung elektrischer energie in einem motorbetriebenen fahrzeug |
CN2010800296481A CN102481836A (zh) | 2009-07-02 | 2010-06-29 | 用于在发动机运行的车辆中获取电能的装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA1029/2009 | 2009-07-02 | ||
AT0102909A AT508500B1 (de) | 2009-07-02 | 2009-07-02 | Vorrichtung zur gewinnung elektrischer energie in einem motorbetriebenen fahrzeug |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2011000818A2 true WO2011000818A2 (de) | 2011-01-06 |
WO2011000818A3 WO2011000818A3 (de) | 2011-03-17 |
Family
ID=43127201
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2010/059179 WO2011000818A2 (de) | 2009-07-02 | 2010-06-29 | Vorrichtung zur gewinnung elektrischer energie in einem motorbetriebenen fahrzeug |
Country Status (4)
Country | Link |
---|---|
CN (1) | CN102481836A (de) |
AT (1) | AT508500B1 (de) |
DE (1) | DE112010002793A5 (de) |
WO (1) | WO2011000818A2 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014203176A1 (de) * | 2014-02-21 | 2015-09-10 | MAHLE Behr GmbH & Co. KG | Thermoelektrische Vorrichtung, insbesondere thermoelektrischer Generator oder Wärmepumpe |
DE102014216449A1 (de) * | 2014-08-19 | 2016-02-25 | Siemens Aktiengesellschaft | Thermoelektrische Vorrichtung |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3407521C1 (de) | 1984-03-01 | 1985-03-14 | Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart | Fluessigkeitskuehlsystem fuer eine aufgeladene Brennkraftmaschine |
DE4219938A1 (de) | 1991-06-21 | 1992-12-24 | Showa Aluminum Corp | Verkleidungsplatte zur verwendung in automobilen oder anderen fahrzeugen |
DE102005005077A1 (de) | 2004-02-05 | 2005-09-08 | Toyota Jidosha K.K., Toyota | Thermoelektrischer Generator für eine Brennkraftmaschine |
DE102004049636A1 (de) | 2004-10-11 | 2006-04-13 | Kollmuß, Anke | Vorrichtung zur Kühlung von flüssigen, gasförmigen oder fließfähigen Medien von Fahrzeugen |
WO2008025707A2 (de) | 2006-08-31 | 2008-03-06 | Siemens Aktiengesellschaft | Thermoelektrische einrichtung mit einem thermoelektrischen generator und mitteln zur temperaturbegrenzung an dem generator |
DE102006057662A1 (de) | 2006-12-07 | 2008-06-12 | Bayerische Motoren Werke Ag | Fahrzeug mit einem thermoelektrischen Generator |
WO2008095582A1 (de) | 2007-02-03 | 2008-08-14 | Bayerische Motoren Werke Aktiengesellschaft | Fahrzeug mit einem thermoelektrischen generator |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61150822A (ja) * | 1984-12-25 | 1986-07-09 | Isuzu Motors Ltd | 車両のエンジン冷却装置 |
EP1897153B1 (de) * | 2005-06-28 | 2012-08-01 | Bsst Llc | Thermoelektrischer generator mit zwischenkreis |
WO2008075132A1 (en) * | 2006-12-21 | 2008-06-26 | Renault Trucks | Cabin for vehicle having an improved heating system |
-
2009
- 2009-07-02 AT AT0102909A patent/AT508500B1/de not_active IP Right Cessation
-
2010
- 2010-06-29 DE DE112010002793T patent/DE112010002793A5/de not_active Withdrawn
- 2010-06-29 WO PCT/EP2010/059179 patent/WO2011000818A2/de active Application Filing
- 2010-06-29 CN CN2010800296481A patent/CN102481836A/zh active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3407521C1 (de) | 1984-03-01 | 1985-03-14 | Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart | Fluessigkeitskuehlsystem fuer eine aufgeladene Brennkraftmaschine |
DE4219938A1 (de) | 1991-06-21 | 1992-12-24 | Showa Aluminum Corp | Verkleidungsplatte zur verwendung in automobilen oder anderen fahrzeugen |
DE102005005077A1 (de) | 2004-02-05 | 2005-09-08 | Toyota Jidosha K.K., Toyota | Thermoelektrischer Generator für eine Brennkraftmaschine |
DE102004049636A1 (de) | 2004-10-11 | 2006-04-13 | Kollmuß, Anke | Vorrichtung zur Kühlung von flüssigen, gasförmigen oder fließfähigen Medien von Fahrzeugen |
WO2008025707A2 (de) | 2006-08-31 | 2008-03-06 | Siemens Aktiengesellschaft | Thermoelektrische einrichtung mit einem thermoelektrischen generator und mitteln zur temperaturbegrenzung an dem generator |
DE102006057662A1 (de) | 2006-12-07 | 2008-06-12 | Bayerische Motoren Werke Ag | Fahrzeug mit einem thermoelektrischen Generator |
WO2008095582A1 (de) | 2007-02-03 | 2008-08-14 | Bayerische Motoren Werke Aktiengesellschaft | Fahrzeug mit einem thermoelektrischen generator |
Also Published As
Publication number | Publication date |
---|---|
AT508500A1 (de) | 2011-01-15 |
CN102481836A (zh) | 2012-05-30 |
WO2011000818A3 (de) | 2011-03-17 |
DE112010002793A5 (de) | 2012-11-08 |
AT508500B1 (de) | 2012-01-15 |
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