SE0950146A1 - Kylsystem och metod för kylning av en hybriddrivlina - Google Patents
Kylsystem och metod för kylning av en hybriddrivlinaInfo
- Publication number
- SE0950146A1 SE0950146A1 SE0950146A SE0950146A SE0950146A1 SE 0950146 A1 SE0950146 A1 SE 0950146A1 SE 0950146 A SE0950146 A SE 0950146A SE 0950146 A SE0950146 A SE 0950146A SE 0950146 A1 SE0950146 A1 SE 0950146A1
- Authority
- SE
- Sweden
- Prior art keywords
- cooling
- electric motor
- oil
- housing
- liquid medium
- Prior art date
Links
- 238000001816 cooling Methods 0.000 title claims description 110
- 238000000034 method Methods 0.000 title claims description 20
- 239000007788 liquid Substances 0.000 claims description 43
- 238000005086 pumping Methods 0.000 claims description 17
- 230000009471 action Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 description 28
- 238000004804 winding Methods 0.000 description 16
- 239000002184 metal Substances 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 3
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
- B60H1/00278—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit for the battery
-
- 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
- B60K11/06—Arrangement in connection with cooling of propulsion units with air cooling
-
- 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
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/28—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the electric energy storing means, e.g. batteries or capacitors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Motor Or Generator Cooling System (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Description
15 20 25 For electric propulsion motors, where the winding temperature should not exceed 180 °C at the hot spot, and the temperature of the cooling medium should thus be kept in the range of 140 °C or less, direct oil cooling of the windings 239 is a very efficient approach with the disadvantage of a rather complex oil cooing system. The oil in the gearbox can not be used for cooling electric motors since the magnets of the electric motor may collect metal flakes caused by e.g. wear in the gearbox.
US 20050244284 discloses an oil pump for an electric motor in a hybrid vehicle, wherein the oil is arranged to be pumped to the windings 239 in the motor and thereafter thrown to the housing of the gearbox. The oil is cooled by it self and no cooler is needed. Since gearbox oil is used the electric motor may collect metal flakes.
OBJECTS OF THE INVENTION An object of the present invention is to provide a cooling system for a hybrid drive system which is efficient and cost effective.
Another object of the present invention is to provide a method for cooling a hybrid drive system which is efficient and cost effective.
SUMMARY OF THE INVENTION These and other objects, apparent from the following description, are achieved by a cooling system, a motor vehicle and a method for cooling a hybrid drive line which are of the type stated by way of introduction and which in addition exhibits the features recited in the characterising clause of the appended claim 1, 8, and 10. Preferred embodiments of the inventive device and method defined in appended dependent claims 2-7, 9 and 11-13. 10 15 20 25 Specifically an object of the invention is achieved by a cooling system for cooling a hybrid drive configuration, said configuration comprising an electric motor, electric motor power electronics, and a battery configuration for energy storing, said cooling system comprising means for pumping a liquid medium for cooling the electric motor and the power electronics, wherein said cooling system further comprises means for providing an air stream for cooling the battery configuration and for cooling said liquid medium. ln this way a cooling system which is simple and cost efficient is thus achieved, since air is used for cooling both the battery configuration and the liquid medium, e.g. oil, and the liquid medium, e.g. oil, is used for both cooling the electric motor and the power electronics. The air leaving the battery configuration is depending on the operating temperature range of the battery configuration, and the operating temperature of the battery configuration in a hybrid drive configuration is relatively cold which results in relatively cold air leaving the battery configuration.
According to an embodiment said cooling system further comprises a housing for said electric motor, said housing comprising a liquid medium sump for said liquid medium to be pumped. By having a housing for the electric motor a liquid medium sump, e.g. oil sump, separated from the oil sump of the transmission/gearbox is facilitated. This in turn, as a separate sump is used and not the oil in the oil sump of the housing/compartment for the transmission there is no risk that the magnets of the electric motor may collect metal flakes caused by e.g. wear in the transmission/gearbox. A separate liquid medium than oil may also be used.
According to an embodiment of said cooling system said air stream is arranged for cooling said housing. This results in an easy and efficient cooling of the oil in the housing.
According to an embodiment of said cooling system said liquid medium is arranged to be supplied to the inner wall of said housing by centrifugal action 10 15 20 25 of the rotor of said electric motor. This further increases the efficiency of the cooling of the liquid medium in the housing.
According to an embodiment of said cooling system the means for providing an air stream comprises a fan. This provides for a simple system, said fan being easy to arrange for said cooling of battery configuration and said liquid medium.
According to an embodiment of said cooling system said means for pumping said liquid medium comprises said electric motor. This provides for an efficient cooling system due to the multifunction of the electric motor.
According to an embodiment of said cooling system said liquid medium is oil.
An object of the invention is also achieved by a motor vehicle for hybrid drive comprising a cooling system according any of the embodiments of the invention according to above.
According to an embodiment of said motor vehicle said battery configuration is arranged on the side of said electric motor. This provides for an easy arrangement of the system and hence an efficient cooling system. Further low centre of gravity is achieved, not compromising performance. There is further no collision with bodywork. Yet another advantage is access to low temperature air from the cabin.
An object of the invention is further achieved by a method for cooling a hybrid drive configuration, said configuration comprising an electric motor, electric motor power electronics, and a battery configuration for energy storing, said cooling comprising the steps of: pumping liquid medium for cooling the electric motor and the power electronics, comprising the further steps of: providing an air stream for cooling said battery configuration; and cooling said liquid medium by means of said air stream from the battery configuration cooling step. 10 15 20 25 This results in a simple and cost efficient method for cooling a hybrid drive configuration, since air is used for cooling both the battery configuration and the liquid medium, e.g. oil, and liquid medium, e.g. oil, is used for both cooling the electric motor and the power electronics.
According to an embodiment said method comprises the step of pumping said liquid medium from a sump in a housing for said electric motor. By having a housing for the electric motor a separate a liquid medium sump separated from the oil sump of the transmission/gearbox is facilitated. This in turn, as a separate sump is used and not the oil in the oil sump of the housing/compartment for the transmission there is no risk that the magnets of the electric motor may collect metal flakes caused by e.g. wear in the transmission/gearbox. Further a separate liquid medium than oil may be used.
According to an embodiment of said method the step of cooling said liquid medium by means of said air stream comprises the step of cooling said housing by means of said air. This results in an easy and efficient cooling of the liquid medium, e.g. oil, in the housing.
According to an embodiment of said method said step of pumping said liquid medium from said sump comprises the step of supplying said liquid medium to the inner wall of said housing by centrifugal action of the rotor of said electric motor. This further increases the efficiency of the cooling of the liquid medium, e.g. oil, in the housing.
According to an embodiment of said method the liquid medium is oil.
BRIEF DESCRIPTION OF THE DRAWINGS A better understanding of the present invention will be had upon the reference to the following detailed description when read in conjunction with 10 15 20 25 the accompanying drawings, wherein like reference characters refer to like parts throughout the several views, and in which: Fig. 1 schematically illustrates a motor vehicle for hybrid drive according to an embodiment of the present invention; Fig. 2a schematically illustrates a plan view of a hybrid drive line comprising a cooling system according to an embodiment of the present invention; Fig. 2b schematically illustrates a back view of the cooling system in fig. 2a; and Fig. 3 schematically illustrates a method for cooling a hybrid drive configuration according to an embodiment of the present invention.
DETAILED DESCRIPTION Fig. 1 schematically shows a motor vehicle 100 for hybrid drive according to an embodiment of the present invention. The exemplified vehicle 100 comprises a tow car 110 and a trailer 112. The vehicle 100 may be a heavy vehicle such as a truck or a buss. The vehicle may alternatively be a car.
Fig. 2a schematically illustrates a plan view of a subsystem I of the motor vehicle with a hybrid drive line, and a cooling system 200 according to an embodiment of the present invention, and fig. 2b schematically illustrates a back view of the cooling system 200 in fig. 2a.
The hybrid drive line comprises a combustion engine 210, a transmission 220 connected to engine 210, an electric motor configuration 230 with an electric motor 232, said electric motor configuration 230 being connected to the transmission 220, a drive shaft 240 connected to vehicle wheels 242 via a differential 244 and an axle 246. The combustion engine 210 is arranged to power the electric motor. The combustion engine 210 is arranged to provide 10 15 20 25 power to the transmission 220. The transmission 220 is arranged to transfer the power to spin the drive shaft 240 to operate the vehicle wheels 242 via the differential 244 and axel 246.
The electric motor 232 could be any kind of electric motor 232 suitable for hybrid drive. The electric motor 232 comprises a rotor for rotational movement.
According to this embodiment the transmission 220 and the electric motor 232 are integrated. According to an embodiment the transmission 220 and the electric motor 232 are housed in a common housing 234, said transmission 220 and said electric motor 232 being separated by a partition 225 or the like. The partition 225 may be arranged such that separate compartments are provided for the transmission 220 and for the electric motor 232, such that the oil sump 236 in the compartment/housing of the 220 is compartment/housing 234 of the electric motor 232. The electric motor transmission separated from an oil sump 236 in the configuration 230 thus comprises a housing 234, which according to an embodiment is a portion of a housing for the transmission 220 and the electric motor 232. According to another embodiment the electric motor configuration 230 is separated from the transmission 220, whereby the housing 234 of said electric motor configuration 230 is arranged to hold the electric motor 232 and another housing is arranged to hold the transmission 220.
The electric motor 232 is according to this embodiment arranged between the transmission 220 and the differential 244, i.e. the electric motor 232 is according to this embodiment arranged behind the transmission 220. Thus, the transmission 220 is arranged between the combustion engine 210 and the electric motor 232. According to an alternative embodiment the electric motor 232 is arranged in front of the transmission 220. 10 15 20 25 The electric motor configuration 230 thus comprises a housing 234 for said electric motor 232. The electric motor 232 is thus arranged within said housing 234. Said housing 234 is arranged to receive oil in an oil sump 236 at the bottom of said housing 234.
The hybrid drive line further comprises a battery configuration 250 for storing energy recovered by the electric motor 232. The battery configuration 250 may comprise one or more batteries 252 depending on the size of the vehicle.
The hybrid drive line further comprises power electronics 260 connected to the battery configuration 250 and to the electric motor 232. Said power electronics 260 is arranged to power the electric motor 232 by means of said energy stored in said battery configuration 250 such that a reduction of fuel consumption is achieved.
According to an embodiment the battery configuration 250 and the power electronics 260 are arranged in a container 265. Said container may according to an embodiment be arranged on the frame of the vehicle 100.
The cooling system 200 further comprises means 270 for providing an air stream for cooling the battery configuration 250 and for cooling said oil. Said means 270 for providing an air stream is arranged to direct said air stream towards said battery configuration 250 such that said battery configuration 250 is cooled by means of said air. The air stream is illustrated by means of white or unfilled arrows A.
Said air providing means 270 is arranged to direct said air stream such that it passes through and/or by said battery configuration 250 in the direction towards said oil such that said oil is cooled by means of said air A. Preferably said air stream A is arranged to be directed down stream of said battery configuration 250 towards said housing 234 for the electric motor 232. 10 15 20 25 30 Said air having cooled said battery configuration 250 is thus arranged to cool the outer walls of said housing 234 such that oil within said housing 234 is cooled. ln the embodiment where the electric motor 232 and the transmission 220 are integrated said air stream A or a portion of said air stream A may also cool said transmission 220.
The battery configuration 250 is arranged on the side of the electric motor 232. With the electric motor configuration 230 arranged behind said transmission 220 as shown in fig. 2a and 2b, the battery configuration 250 may according to an alternative embodiment be arranged behind said electric motor configuration 230. According to yet another embodiment the battery configuration 250 could be arranged above said electric motor configuration 230. The battery configuration 250, the electric motor configuration 230 and said means 270 for providing an air stream A could be arranged at any position relative to each other such that said air stream A from said means 270 for providing an air stream A cools the battery configuration 250 and, downstream of said battery configuration 250, cools said oil by means of cooling said housing 234 of said electric motor configuration 230.
According to an embodiment said means 270 for providing an air stream A comprises a fan 270. According to another embodiment said means 270 for providing an air stream A comprises an air conditioning system of said vehicle. The battery configuration 250 may have an internal air flow that transports the heat to a surface where the air stream A takes over. The purpose is to avoid intrusion of dirt and humidity in the compartment of the battery configuration 250. The means 270 for providing an air stream A is according to an embodiment a combination of any of the above means 270 for providing an air stream A.
The cooling system 200 comprises means 280 for pumping oil for cooling the electric motor 232 and the power electronics 260. According to an embodiment said means 280 for pumping said oil comprises a pump 280, said pump thus being arranged to pump oil for cooling the electric motor 232 10 15 20 25 10 and the power electronics 260. The pump 280 is arranged in said housing 234 for pumping said oil in said oil sump 236. The flow of oil is illustrated by means of a black or filled arrow O.
The cooling system 200 further comprises a cooling circuit 290 through which oil from said oil sump 236 is arranged to be pumped. The means for pumping 280, e.g. the pump 280 is connected to said cooling circuit 290. The cooling circuit 290 is further connected to said power electronics 260 for cooling said power electronics 260 by means of said oil O. The oil O is arranged to flow passed said power electronics 260.
The oil flow could be arranged via a heat sink and/or directly through the components 262 of power electronics 260 to get better cooling for the components 260 not connected to the heat sink. design of the power electronics may be easier and more compact since the thermal transfer is simplified. Since the oil is used for Iubrication of the transmission it could be optimized for electric isolation and thermal transfer.
According to one embodiment the oil O is arranged to be pumped through said power electronics 260 for cooling said power electronics 260, i.e. the oil O is arranged to come in direct contact with components 262 of said power electronics 260.
According to another embodiment said oil O is arranged to be pumped passed said power electronics 260 such that said power electronics 260 is cooled. According to an embodiment said oil O is pumped through a plate or a pipe configuration arranged adjacent to said power electronics 260 such that said power electronics 260 is cooled. Said oil O is thus according to theses embodiments not in direct contact with the power electronics 260.
The oil O is further arranged to be reintroduced into said housing 234. The cooling circuit 290 is connected between the power electronics 260 and the housing 234, said cooling circuit 290 being connected to said housing 234 for reintroducing said oil O. The cooling circuit 290 is connected to the upper 10 15 20 25 11 portion of the housing 234 such that reintroduced oil O pours/drops down on the windings 239 of said electric motor 232.
The rotor 238 is according to an embodiment arranged to distribute the oil towards the windings 239 again after the oil has passed the windings 239.
After one or more contacts of the oil O with the windings 239 oil will be thrown at the walls of the housing. Since all parts of the windings 239 should be cooled the oil should be distributed to all parts of the winding. Oil O may run from the winding to the housing, especially in the lower half of the winding.
The oil O is arranged to be supplied to the inner wall of said housing 234 by centrifugal action of the rotor 238 of said electric motor 232. Thus, as the rotor 238 of the electric motor 232 rotates, oil O introduced into the housing 234 of the electric motor configuration 230 and pouring down on said rotor 238 is cast towards the inner walls 235 of said housing 234 by means of said rotation. The oil O then flows down on the walls back into the oil sump 236.
Due to the fact that a separate oil sump 236 is used and not the oil O in the oil sump 236 of the housing 234/compartment for the transmission 220 there is no risk that the magnets of the electric motor 232 may collect metal flakes caused by e.g. wear in the transmission 220/gearbox. The oil used to cool components 262 in the power electronics 260 should not contain metal flakes in order to avoid malfunction and isolations faults. lnstead of using oil as cooling medium according to above another suitable liquid which does not harm the windings 239 or components in the power electronics could be used. According to an embodiment a liquid that boils when it is heated on the windings 239 and later condenses on the walls, e.g. alcohol, propane, etc. may be used. Partial boiling in the power electronics might increase the complexity due to requirements for leading gas an d liquid to the electric motor housing, but will also increase the cooling performance. 10 15 20 25 30 12 Thus, during drive of said vehicle, the oil O is arranged to be circulated by means of said pumping means 280 from the oil sump 236 in said housing 234 of the electric motor configuration 230 towards and passed said power electronics 260 for cooling said power electronics 260 and further back to the rotor 238/windings 239 of said electric motor 232 in said housing 234 for cooling of said windings 239. From the windings 239 it is arranged to drop down on and/or thrown by means of the rotor 238 of the electric motor 232 towards the inner walls 235 of said housing 234. From the inner walls 235 of said housing 234 the oil O is arranged to flow back into said sump where it is re-circulated by means of said pumping means.
The means 270 for providing an air stream A is during said circulation of oil O, i.e. during drive of said vehicle, arranged to provide said air stream A for cooling said battery configuration 250 and for cooling said oil O. Said air stream A is directed such that said battery configuration 250 is cooled by means of said air in said air stream A and thereafter said from the heat exchange of the cooling of the battery configuration 250 slightly hotter air of said air stream A is arranged to cool the housing 234 of said electric motor configuration 230 such that the walls of the housing 234 are cooled and hence said oil O on the inner walls 235 is cooled.
Since the battery configuration 250 should be kept in the range of below 45 °C, air supplied as an air stream A by means of said means for supplying air, e.g. a fan, is an efficient medium for cooling said battery configuration 250.
Further, said air stream A downstream of said battery back, heated by heat exchange with said battery pack, and directed towards said housing 234 of the electric motor configuration 230 is an efficient medium with a suitable temperature for cooling said oil O within the housing 234. This due to the fact that the oil O in the housing 234 is cooled to a temperature of e.g. 60-70 °C, and since the oil O pumped from said housing 234 is intended for cooling said power electronics 260, which power electronics 260 should be at a temperature range of about 80 °C, said oil O is at a suitable temperature for 10 15 20 25 13 cooling of said power electronics 260. Finally, since the electric motor 232 should be in the range of 140 °C, the oil O downstream of said power electronics 260 being introduced into said housing 234 for cooling said electric motor 232 has a suitable temperature for cooling said electric motor 232. ln this way a cooling system 200 which is simple and cost efficient is thus achieved, since air is used for cooling both the battery configuration 250 and the oil O and oil O is used for both cooling the electric motor 232 and the power electronics 260. According to an embodiment the electric motor 232 is used for providing said oil O on the inner wall of said housing 234 by means of centrifugal action of the rotor 238 of said electric motor 232. According to another embodiment the electric motor 232 is also used for pumping said oil O.
These temperatures or temperature ranges are only examples, and any suitable temperature for the cooling system 200 according to the present invention is conceivable.
Fig. 3 schematically illustrates a method for cooling a hybrid drive configuration according to an embodiment of the present invention.
According to an embodiment the method for cooling a hybrid drive configuration comprises a first step S310. ln this step oil O for cooling electric motor 232 and power electronics 260 is pumped.
The method further comprises a second step S320. ln this step the air stream A for cooling battery configuration 250 is provided.
The method further comprises a third step S330. ln this step said oil O is cooled by means of said air stream A from the battery configuration 250 cooling step. 10 14 The foregoing description of the preferred embodiments of the present invention has been provided for the purposes of illustration and description. lt is not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations will be apparent to practitioners skilled in the art. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, thereby enabling others skilled in the art to understand the invention for various embodiments and with the various modifications as are suited to the particular use contemplated.
Claims (14)
1. A cooling system for cooling a hybrid drive configuration, said configuration comprising an electric motor (232), electric motor (232) power electronics (260), and a battery configuration (250) for energy storing, said cooling system comprising means (280) for pumping a liquid medium (O) for (232) and the power electronics (260), characterized in that said cooling system further comprises means (270) for cooling the electric motor providing an air stream (A) for cooling the battery configuration (250) and for cooling said liquid medium (O).
2. A cooling system according to claim 1, further comprising a housing (234) for said electric motor (232), said housing (234) comprising a liquid medium sump (236) for said liquid medium (O) to be pumped.
3. A cooling system according to claim 2, wherein said air stream (A) is arranged for cooling said housing (234).
4. A cooling system according to any of claims 1-3, wherein said liquid medium (O) is arranged to be supplied to the inner wall of said housing (234) by centrifugal action of the rotor 238 of said electric motor (232).
5. A cooling system according to any of claims 1-4, wherein the means (270) for providing an air stream (A) comprises a fan.
6. A cooling system according to any of claims 1-5, wherein said means (280) for pumping said liquid medium (O) comprises said electric motor (232).
7. A cooling system according to any of claims 1-6, wherein said liquid medium is oil (O).
8. A motor vehicle for hybrid drive comprising a cooling system according to any of claims 1-6. 10 15 20 25 16
9. A motor vehicle according to claim 8, wherein said battery configuration (250) is arranged on the side of said electric motor (232).
10.A method for cooling a hybrid drive configuration, said configuration comprising an electric motor (232), electric motor (232) power electronics (260), and a battery configuration (250) for energy storing, said cooling comprising the steps of: pumping a liquid medium (O) for cooling the electric motor (232) and the power electronics (260), characterized by the further steps of: - providing an air stream (A) for cooling said battery configuration (250); and - cooling said liquid medium (O) by means of said air stream (A) from the battery configuration (250) cooling step.
11.A method according to claim 10, comprising the step of pumping said liquid medium (O) from a sump in a housing (234) for said electric motor (232).
12. A method according to claim 10 or 11, wherein the step of cooling said liquid medium (O) by means of said air stream (A) comprises the step of cooling said housing (234) by means of said air.
13. A method according to any of claims 10-12, wherein said step of pumping said liquid medium (O) from said sump comprises the step of supplying said liquid medium (O) to the inner wall of said housing (234) by centrifugal action of the rotor 238 of said electric motor (232).
14. A method according to any of claims 10-13, wherein said liquid medium is oil (O).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE0950146A SE533582C2 (sv) | 2009-03-12 | 2009-03-12 | Kylsystem och metod för kylning av en hybriddrivlina |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE0950146A SE533582C2 (sv) | 2009-03-12 | 2009-03-12 | Kylsystem och metod för kylning av en hybriddrivlina |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE0950146A1 true SE0950146A1 (sv) | 2010-09-13 |
| SE533582C2 SE533582C2 (sv) | 2010-10-26 |
Family
ID=43243901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE0950146A SE533582C2 (sv) | 2009-03-12 | 2009-03-12 | Kylsystem och metod för kylning av en hybriddrivlina |
Country Status (1)
| Country | Link |
|---|---|
| SE (1) | SE533582C2 (sv) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106232403A (zh) * | 2014-03-11 | 2016-12-14 | 斯堪尼亚商用车有限公司 | 车辆中混合动力部件的设备总成 |
-
2009
- 2009-03-12 SE SE0950146A patent/SE533582C2/sv not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106232403A (zh) * | 2014-03-11 | 2016-12-14 | 斯堪尼亚商用车有限公司 | 车辆中混合动力部件的设备总成 |
Also Published As
| Publication number | Publication date |
|---|---|
| SE533582C2 (sv) | 2010-10-26 |
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