CN114435115A - Hybrid electric vehicle and thermal management system thereof - Google Patents
Hybrid electric vehicle and thermal management system thereof Download PDFInfo
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- CN114435115A CN114435115A CN202011231828.XA CN202011231828A CN114435115A CN 114435115 A CN114435115 A CN 114435115A CN 202011231828 A CN202011231828 A CN 202011231828A CN 114435115 A CN114435115 A CN 114435115A
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- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims description 28
- 239000007788 liquid Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 239000003921 oil Substances 0.000 claims description 6
- 239000010705 motor oil Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000002826 coolant Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Images
Classifications
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- 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
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/27—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The invention discloses a hybrid electric vehicle and a thermal management system thereof, wherein the thermal management system comprises an engine heat exchange loop and a battery heat exchange loop, the engine heat exchange loop comprises a first power pump and is used for providing a first heat exchange medium for an engine, the battery heat exchange loop comprises a battery heat exchange part, two ends of the battery heat exchange part are respectively connected in parallel to the engine heat exchange loop through a first switch valve and a second switch valve, the merging position of the battery heat exchange part is positioned at the downstream of the engine, and when the battery has a heating requirement, the first switch valve and the second switch valve are in an open state. The heat management system provided by the invention has the advantages of higher utilization efficiency of energy, simple structure and convenience in arrangement.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a hybrid electric vehicle and a thermal management system thereof.
Background
At present, in normal running operation of a hybrid electric vehicle, an engine, a motor and a battery are all independently provided with a heat exchange system, so that the heat exchange system in the hybrid electric vehicle is complex in structure and low in energy utilization rate.
Therefore, how to provide a solution to overcome the above-mentioned drawbacks remains a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a hybrid electric vehicle and a thermal management system thereof, wherein the thermal management system has high utilization efficiency of energy, simple structure and convenient arrangement.
In order to solve the technical problem, the invention provides a thermal management system of a hybrid electric vehicle, which comprises an engine heat exchange loop and a battery heat exchange loop, wherein the engine heat exchange loop comprises a first power pump for providing a first heat exchange medium for an engine, the battery heat exchange loop comprises a battery heat exchange part, two ends of the battery heat exchange part are respectively connected in parallel to the engine heat exchange loop through a first switch valve and a second switch valve, the merging position of the battery heat exchange part is positioned at the downstream of the engine, and when a battery has a heating requirement, the first switch valve and the second switch valve are in an open state.
According to the invention, the battery heat exchange component can be incorporated into the heat exchange loop of the engine, if the environmental temperature is low and the battery has a heating requirement, the first switch valve and the second switch valve can be opened to introduce the first heat exchange medium into the battery heat exchange component to heat the battery, so that the heat absorbed by the first heat exchange medium when the engine is cooled can be fully utilized to meet the heating requirement of the battery, meanwhile, the first heat exchange medium can be cooled, the energy utilization efficiency of the whole vehicle can be improved, active heating equipment in the prior art can be omitted, the structure of the battery heat exchange loop can be simplified, and the arrangement is convenient.
Optionally, the heat exchanger further comprises a motor heat exchange loop, the motor heat exchange loop comprises a second power pump and is used for providing a second heat exchange medium for the motor, the battery heat exchange loop is connected in parallel to two ends of the motor through a third switch valve and a fourth switch valve, and when the battery has a cooling demand, the third switch valve and the fourth switch valve are in an open state.
Optionally, the battery heat exchange loop further includes a cooling component, the cooling component is located upstream of the battery heat exchange component, a fifth switch valve is connected in parallel to two ends of the cooling component, and when the second cooling medium from the motor heat exchange loop has a cooling demand, the fifth switch valve is in a closed state, and otherwise, the fifth switch valve is in an open state.
Optionally, the motor heat exchange loop further comprises a second radiator and a second liquid supply part.
Optionally, the engine is a supercharged engine, and the motor heat exchange loop is further connected in series with an intercooling flow path, and the intercooling flow path is located upstream of the motor.
Optionally, the intercooling flow path comprises a water air cooler and a supercharger water jacket arranged in parallel.
Optionally, a sixth switch valve is connected in parallel to both ends of the intercooling flow path, and a seventh switch valve is connected in parallel to both ends of the motor.
Optionally, the engine heat exchange loop further comprises a first liquid supply part and a first radiator, and the battery heat exchange part is connected in parallel to two ends of the first radiator.
Optionally, the engine heat exchange circuit further comprises a thermostat and/or an engine oil cooler and/or a transmission oil cooler and/or a warm air heat exchanger and/or an EGR heat exchanger.
The invention further provides a hybrid electric vehicle which comprises a thermal management system, wherein the thermal management system is the thermal management system of the hybrid electric vehicle.
Since the thermal management system of the hybrid electric vehicle has the above technical effects, the hybrid electric vehicle having the thermal management system also has similar technical effects, and therefore the detailed description thereof is omitted here.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a thermal management system of a hybrid electric vehicle according to the present invention.
The reference numerals in fig. 1 are explained as follows:
1-an engine heat exchange loop, 11-a first power pump, 12-an engine, 13-a first liquid supply part,
14-a first radiator, 15-a thermostat, 16-an engine oil cooler, 17-a gearbox oil cooler, 18-a warm air heat exchanger and 19-an EGR heat exchanger;
2-battery heat exchange loop, 21-battery heat exchange part, 22-first switch valve, 23-second switch valve, 24-third switch valve, 25-fourth switch valve, 26-cooling part and 27-fifth switch valve;
3-motor heat exchange loop, 31-second power pump, 32-motor, 33-second radiator, 34-second liquid supply component, 35-inter-cooling flow path, 351-water air cooler, 352-supercharger water jacket, 36-sixth switch valve and 37-seventh switch valve.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
The terms "first," "second," and the like, herein are used for convenience in describing two or more structures or components that are the same or similar in structure, and do not denote any particular limitation as to order and/or importance.
It should be known that the optimum temperature when battery lasts the discharge is about 20 ℃, if ambient temperature is too low, then need heat for the battery, and active heating equipment is add in battery heat transfer system to current scheme generally, but this must increase heat transfer system's structural complexity.
In view of the above, the present invention provides a thermal management system for a hybrid vehicle, which can utilize heat of a heat exchange medium of an engine to heat a battery, so as to simplify a structure of the heat exchange system and fully utilize energy, and specifically, refer to fig. 1, where fig. 1 is a schematic structural diagram of a specific embodiment of the thermal management system for a hybrid vehicle provided in the present invention.
As shown in fig. 1, the present invention provides a thermal management system for a hybrid vehicle, including an engine heat exchanging loop 1 and a battery heat exchanging loop 2, where the engine heat exchanging loop 1 includes a first power pump 11 for providing a first heat exchanging medium for an engine 12, the battery heat exchanging loop 2 includes a battery heat exchanging component 21, two ends of the battery heat exchanging component 21 are respectively connected in parallel to the engine heat exchanging loop 1 through a first switch valve 22 and a second switch valve 23, and a merging position of the battery heat exchanging component 21 is located downstream of the engine 12, and when a battery has a heating demand, the first switch valve 22 and the second switch valve 23 are in an open state.
Researches find that the optimal temperature of the first heat exchange medium is about 90 ℃ when the engine runs, and the temperature of the first heat exchange medium is increased after the engine is cooled and subjected to heat exchange. Therefore, in the embodiment of the present invention, the battery heat exchange component 21 can be incorporated into the engine heat exchange loop 1, if the ambient temperature is low and the battery has a heating requirement, the first switch valve 22 and the second switch valve 23 can be opened to introduce the first heat exchange medium into the battery heat exchange component 21 to heat the battery, which not only can fully utilize the heat absorbed by the first heat exchange medium when the engine 12 is cooled to meet the heating requirement of the battery, but also can cool the first heat exchange medium, so as to improve the energy utilization efficiency of the entire vehicle, and can save the active heating equipment in the prior art, thereby facilitating the simplification of the structure of the battery heat exchange loop 2 and facilitating the arrangement.
It should be noted that, in the embodiment of the present invention, the opening and closing timings of the first switch valve 22 and the second switch valve 23 are not limited, which are specifically related to the type and performance of the battery, and in practical applications, a person skilled in the art may perform setting according to actual needs so as to timely introduce the first heat exchange medium into the battery heat exchange component 21; in addition, the embodiment of the present invention also does not limit the structure of the battery heat exchanging part 21, and in specific implementation, a person skilled in the art may select the structure according to actual needs, for example, a water-cooling plate may be selected.
Further, the heat exchange system can further comprise a motor heat exchange loop 3, the motor heat exchange loop 3 can comprise a second power pump 31 for providing a second heat exchange medium for the motor 32, the battery heat exchange loop 2 can be connected in parallel to two ends of the motor 32 through the third switch valve 24 and the fourth switch valve 25, and when the battery has a cooling demand, the third switch valve 24 and the fourth switch valve 25 can be in an open state, so that the second heat exchange medium (the second heat exchange medium with relatively low temperature) which does not cool the motor 32 is introduced into the battery heat exchange loop 2, thereby cooling the battery.
In combination with the foregoing, when the battery has a heating requirement, the first heat exchange medium of the engine heat exchange loop 1 may be introduced, and when the battery has a cooling requirement, the second heat exchange medium of the motor heat exchange loop 3 may be introduced, that is, the battery heat exchange loop 2 may not have its own heat exchange medium, so that an independent heat exchange loop is omitted, and at least one power pump, one liquid supply component, and one radiator may be omitted, thereby simplifying the structure of the thermal management system provided by the present invention to a greater extent.
Here, the embodiment of the present invention does not limit the types of the first heat exchange medium and the second heat exchange medium, and in the specific implementation, a person skilled in the art may select the heat exchange medium according to actual needs. Generally speaking, the first heat exchange medium and the second heat exchange medium can be water or oil.
With continued reference to fig. 1, the battery heat exchanging loop 2 may further include a cooling component 26, the cooling component 26 may be located upstream of the battery heat exchanging component 21, a fifth on-off valve 27 may be connected in parallel to two ends of the cooling component 26, and when the second cooling medium from the motor heat exchanging loop 3 has a cooling demand, the fifth on-off valve 27 may be in a closed state, and conversely, the fifth on-off valve 27 may be in an open state.
If the ambient temperature is very high, the temperature of the second heat exchange medium of the motor heat exchange loop 3 is high, the fifth switch valve 27 can be closed, so that the second heat exchange medium can enter the cooling part 26 to be cooled before entering the battery heat exchange part 21, and when the second heat exchange medium does not have a cooling demand, the second switch valve 27 can be opened again to form a bypass flow path, and then the second heat exchange medium can be directly guided to the battery heat exchange part 21. The structure of the cooling member 26 is not limited herein.
The motor heat exchange loop 3 may further include a second radiator 33 and a second liquid supply part 34, where the second liquid supply part 34 may specifically be a water tank, a kettle, or the like, and is configured to provide a second heat exchange medium to the motor heat exchange loop 3, and the second radiator 33 may be configured to cool the second heat exchange medium having a higher temperature after passing through the battery heat exchange loop 2 and/or the motor 32.
Referring to fig. 1, the second radiator 33 and the second liquid supply part 34 may be arranged in parallel, that is, the second heat exchange medium passing through the battery heat exchange loop 2 and/or the motor 32 may not be completely introduced into the second radiator 33, because the heat dissipation capability of the second radiator 33 may be relatively large, and at this time, only a part of the second heat exchange medium needs to be introduced into the second radiator 33, so as to control the temperature of the second heat exchange medium output by the second power pump 31. Of course, the second heat sink 33 and the second liquid supply part 34 may also be arranged in series, which is particularly related to the structure and heat dissipation capability of the second heat sink 33.
In a conventional scheme, the engine 12 may also be designed as a supercharged engine to improve the power performance of the engine 12, at this time, an intercooling heat exchange loop needs to be further provided, and at present, the intercooling heat exchange loop is also independently provided, resulting in a redundant design of coexistence of four heat exchange loops of an engine, a motor, a battery and an intercooling heat exchange loop, which is ubiquitous in the prior art.
In this regard, the intercooling circuit 35 may be connected in series in the motor heat exchange loop 3, and the intercooling circuit 35 may be located upstream of the motor 32, so as to further improve the integration of the heat management system provided by the present invention.
It can be known that the optimal temperature of the second heat exchange medium required by the motor 32 is about 40 ℃ to 60 ℃, and when the ambient temperature is low, by adopting the above design, the second heat exchange medium can flow through the intercooling flow path 35 before flowing into the motor 32, so as to heat the second heat exchange medium to a certain extent, and then flow into the motor 32, so that the second heat exchange medium flowing into the motor 32 can be ensured to be in a better temperature range, and further the motor 32 can be cooled better.
The intercooling circuit 35 may include a conventional intercooling heat exchange circuit, and in the embodiment of the drawings, the intercooling circuit 35 may include a water air cooler 351 and a supercharger water jacket 352 arranged in parallel, and the two components may be structured as in the prior art.
Further, a sixth switch valve 36 may be connected in parallel to both ends of the intercooling flow path 35, and a seventh switch valve 37 may be connected in parallel to both ends of the motor 32, where the sixth switch valve 36 may construct a bypass flow path for the intercooling flow path 35, and the seventh switch valve 37 may construct a bypass flow path for the motor 32, and when the intercooling flow path 35 is not needed, the sixth switch valve 36 may be opened, and when the motor 32 is not needed to be cooled, the seventh switch valve 37 may be opened.
Referring to fig. 1 again, the engine heat exchange loop 1 may further include a first liquid supply part 13 and a first radiator 14, the first liquid supply part 13 may specifically be a water tank, a water bottle, or the like, and is configured to provide a first heat exchange medium for the engine heat exchange loop 1, and the battery heat exchange part 21 may be connected in parallel to two ends of the first radiator 14, that is, the first heat exchange medium flowing through the battery heat exchange part 21 may no longer flow to the first radiator 14, and since the battery heat exchange part 21 has a partial cooling function, the heat dissipation requirement on the first radiator 14 may be appropriately reduced, which is also beneficial to reduce the cost. In addition, the battery heat exchanging element 21 may be connected in parallel to another position of the engine heat exchanging circuit 1, for example, an upstream position of the first radiator 14, as long as the above-described effects can be achieved.
Here, the embodiments of the present invention are not limited to the configurations of the first heat sink 14 and the second heat sink 33, and those skilled in the art can select the configurations according to actual needs in implementation.
The engine heat exchange circuit 1 may further comprise a thermostat 15 and/or an engine oil cooler 16 and/or a gearbox oil cooler 17 and/or a warm air heat exchanger 18 and/or an EGR heat exchanger 19.
The structures of these components are not limited herein, and the positions of these components in the engine heat exchange circuit 1 can be referred to fig. 1, the thermostat 15 can directly receive the first heat exchange medium flowing through the engine 12 and can distribute the first heat exchange medium, most of which can directly flow to the first power pump 11 through the first radiator 14, part of which can flow to the battery heat exchange circuit 2 through the first switch valve 22, and part of which can flow to the warm air heat exchanger 18 and the EGR (Exhaust Gas recirculation) heat exchanger 19, wherein the warm air heat exchanger 18 can provide heat for the warm air system by using the waste heat of the engine 12, and part of which can flow to the first power pump 11 through the transmission oil cooler 17 and the engine oil cooler 16.
The first, second, fourth, fifth, sixth, and seventh switching valves 22, 23, 25, 27, 36, and 37 may be solenoid valves, and may be opened or closed by a response signal.
For the thermal management system according to the foregoing embodiments, the following embodiments of the present invention may also describe an operation condition of the thermal management system under several typical operating conditions.
Typical operating conditions one: the environment temperature is low, the engine 12 works stably, the battery has a heating requirement, the third switch valve 24 and the fourth switch valve 25 can be closed to disconnect the battery heat exchange loop 2 from the motor heat exchange loop 3, and the first switch valve 22 and the second switch valve 23 can be opened to connect the battery heat exchange loop 2 in parallel in the engine heat exchange loop 1, so that part of the first heat exchange medium flowing out of the thermostat 15 can be introduced into the battery heat exchange part 21 of the battery heat exchange loop 3 to heat the battery;
the typical operation condition two: the environment temperature is moderate, the battery does not need to be heated or cooled, and the first switch valve 22, the second switch valve 23, the third switch valve 24 and the fourth switch valve 25 can be in a closed state so as to isolate the battery heat exchange loop 2 from the engine heat exchange loop 1 and the motor heat exchange loop 3;
the typical operation condition three: the environment temperature is high, the battery has a cooling requirement, the third switch valve 24 and the fourth switch valve 25 can be opened, the battery heat exchange loop 2 can be connected in parallel in the motor heat exchange loop 3, the first switch valve 22 and the second switch valve 23 can be closed, the battery heat exchange loop 2 and the engine heat exchange loop 1 can be disconnected, the fifth switch valve 27 can be opened, and a second heat exchange medium which does not enter the motor 32 can be introduced into the battery heat exchange part 21 of the battery heat exchange loop 2 to cool the battery;
the typical operation condition four: the ambient temperature is ultrahigh, and the battery has the cooling demand, and motor heat transfer circuit 3's second heat transfer medium's temperature is higher, compares with aforementioned operating mode three, need close fifth ooff valve 27 to utilize cooling part 26 to cool off second heat transfer medium, thereby the guarantee is to the cooling effect of battery.
In the above description of several typical operating conditions, the descriptions of "low ambient temperature", "moderate ambient temperature", "high ambient temperature" and "ultra-high ambient temperature" may set different temperature thresholds in actual operation to divide the above several intervals so as to perform on-off control on the corresponding on-off valve.
The invention also provides a hybrid electric vehicle which comprises a thermal management system, wherein the thermal management system is the thermal management system of the hybrid electric vehicle related to each embodiment.
Since the above-mentioned thermal management system of the hybrid electric vehicle already has the above technical effects, the hybrid electric vehicle having the thermal management system also has similar technical effects, and therefore, the detailed description thereof is omitted here.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.
Claims (10)
1. The utility model provides a hybrid vehicle's thermal management system, includes engine heat transfer circuit (1) and battery heat transfer circuit (2), its characterized in that, engine heat transfer circuit (1) includes first power pump (11) for engine (12) provide first heat transfer medium, battery heat transfer circuit (2) include battery heat transfer part (21), the both ends of battery heat transfer part (21) respectively through first ooff valve (22), second ooff valve (23) connect in parallel in engine heat transfer circuit (1), just the position of merging of battery heat transfer part (21) is located the low reaches of engine (12), when the battery has the heating demand, first ooff valve (22), second ooff valve (23) are in the open mode.
2. The thermal management system of the hybrid electric vehicle as claimed in claim 1, further comprising an electric motor heat exchange loop (3), wherein the electric motor heat exchange loop (3) comprises a second power pump (31) for providing a second heat exchange medium for the electric motor (32), and the battery heat exchange loop (2) is connected in parallel to two ends of the electric motor (32) through a third switch valve (24) and a fourth switch valve (25), and the third switch valve (24) and the fourth switch valve (25) are in an open state when the battery has a cooling demand.
3. The thermal management system of a hybrid vehicle according to claim 2, wherein the battery heat exchange circuit (2) further comprises a cooling component (26), the cooling component (26) is located upstream of the battery heat exchange component (21), a fifth switching valve (27) is connected in parallel to both ends of the cooling component (26), and when the second cooling medium from the motor heat exchange circuit (3) has a cooling demand, the fifth switching valve (27) is in a closed state, and conversely, the fifth switching valve (27) is in an open state.
4. The thermal management system of the hybrid vehicle according to claim 2, wherein the electric machine heat exchange circuit (3) further comprises a second radiator (33) and a second liquid supply part (34).
5. The thermal management system of the hybrid vehicle according to claim 2, wherein the engine (12) is a supercharged engine, and the motor heat exchange circuit (3) is further connected in series with an intercooling flow path (35), and the intercooling flow path (35) is located upstream of the motor (32).
6. The hybrid vehicle thermal management system of claim 5, wherein the intercooling flow path (35) includes a water air intercooler (351) and a supercharger water jacket (352) arranged in parallel.
7. The thermal management system of the hybrid vehicle according to claim 5, wherein a sixth switching valve (36) is connected in parallel to both ends of the intercooling flow path (35), and a seventh switching valve (37) is connected in parallel to both ends of the motor (32).
8. The thermal management system of a hybrid vehicle according to any one of claims 1 to 7, wherein the engine heat exchange circuit (1) further includes a first liquid supply part (13) and a first radiator (14), and the battery heat exchange part (21) is connected in parallel to both ends of the first radiator (14).
9. The thermal management system of a hybrid vehicle according to one of claims 1 to 7, characterized in that the engine heat exchanger circuit (1) further comprises a thermostat (15) and/or an engine oil cooler (16) and/or a transmission oil cooler (17) and/or a warm air heat exchanger (18) and/or an EGR heat exchanger (19).
10. A hybrid vehicle comprising a thermal management system, wherein the thermal management system is the thermal management system of the hybrid vehicle of any one of claims 1-9.
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| CN202011231828.XA CN114435115B (en) | 2020-11-06 | 2020-11-06 | Hybrid electric vehicle and thermal management system thereof |
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