CN114435115B - Hybrid electric vehicle and thermal management system thereof - Google Patents
Hybrid electric vehicle and thermal management system thereof Download PDFInfo
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- CN114435115B CN114435115B CN202011231828.XA CN202011231828A CN114435115B CN 114435115 B CN114435115 B CN 114435115B CN 202011231828 A CN202011231828 A CN 202011231828A CN 114435115 B CN114435115 B CN 114435115B
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- engine
- management system
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- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 238000001816 cooling Methods 0.000 claims description 34
- 239000007788 liquid Substances 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 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
- 230000000694 effects Effects 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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
-
- 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
-
- 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
-
- 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 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 with the engine heat exchange loop in parallel 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. The thermal management system provided by the invention has higher energy utilization efficiency, and has a simple structure and is convenient to arrange.
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 is still 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 higher energy utilization efficiency, simple structure and convenient arrangement.
In order to solve the technical problems, 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 with the engine heat exchange loop in parallel 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 integrated into the engine heat exchange loop, if the ambient 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, and meanwhile, the first heat exchange medium can be cooled, thereby improving the energy utilization efficiency of the whole vehicle, saving active heating equipment in the prior art, and being beneficial to simplifying the structure of the battery heat exchange loop so as to facilitate arrangement.
Optionally, the motor heat exchange loop 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 with two ends of the motor through a third switch valve and a fourth switch valve, and when the battery has a cooling requirement, the third switch valve and the fourth switch valve are in an open state.
Optionally, the battery heat exchange circuit further comprises a cooling component, the cooling component is located at the 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 circuit has a cooling requirement, the fifth switch valve is in a closed state, otherwise, the fifth switch valve is in an open state.
Optionally, the motor heat exchange circuit further comprises a second radiator and a second liquid supply component.
Optionally, the engine is a supercharged engine, and the motor heat exchange loop is further connected with an inter-cooling flow path in series, and the inter-cooling flow path is located at the upstream of the motor.
Optionally, the intercooling flow path comprises a water-air intercooler and a supercharger water jacket arranged in parallel.
Optionally, the two ends of the intercooling flow path are connected with a sixth switching valve in parallel, and the two ends of the motor are connected with a seventh switching valve in parallel.
Optionally, the engine heat exchange loop further comprises a first liquid supply component and a first radiator, and the battery heat exchange component is connected in parallel with 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 gearbox oil cooler and/or a warm air heat exchanger and/or an EGR heat exchanger.
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.
Since the above-mentioned thermal management system of the hybrid electric vehicle has the technical effects as described above, the hybrid electric vehicle having the thermal management system also has similar technical effects, and thus will not be described herein.
Drawings
Fig. 1 is a schematic structural diagram of a thermal management system of a hybrid electric vehicle according to an embodiment of the present invention.
The reference numerals in fig. 1 are explained as follows:
1-engine heat exchange loop, 11-first power pump, 12-engine, 13-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;
the device comprises a 2-battery heat exchange loop, a 21-battery heat exchange component, a 22-first switch valve, a 23-second switch valve, a 24-third switch valve, a 25-fourth switch valve, a 26-cooling component and a 27-fifth switch valve;
the device comprises a 3-motor heat exchange loop, a 31-second power pump, a 32-motor, a 33-second radiator, a 34-second liquid supply part, a 35-intercooling flow path, a 351-water-air intercooler, a 352-booster water jacket, a 36-sixth switching valve and a 37-seventh switching valve.
Detailed Description
In order to make the technical solution 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 merely used for convenience in describing two or more structures or components that are identical or similar in structure and do not denote any particular limitation with respect to order and/or importance.
It should be appreciated that, when the battery is continuously discharged, the optimal temperature is about 20 ℃, if the environmental temperature is too low, the battery needs to be heated, and the existing scheme generally adds an active heating device in the battery heat exchange system, but this necessarily increases the structural complexity of the heat exchange system.
In view of this, the present invention provides a thermal management system for a hybrid electric 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 make full use of energy, and referring to fig. 1, fig. 1 is a schematic structural diagram of a specific embodiment of the thermal management system for a hybrid electric vehicle.
As shown in fig. 1, the present invention provides a thermal management system of a hybrid electric vehicle, which comprises an engine heat exchange circuit 1 and a battery heat exchange circuit 2, wherein the engine heat exchange circuit 1 comprises a first power pump 11 for providing a first heat exchange medium for an engine 12, the battery heat exchange circuit 2 comprises a battery heat exchange component 21, two ends of the battery heat exchange component 21 are respectively connected in parallel with the engine heat exchange circuit 1 through a first switch valve 22 and a second switch valve 23, the incorporation position of the battery heat exchange component 21 is located at the downstream of the engine 12, and when a battery has a heating requirement, the first switch valve 22 and the second switch valve 23 are in an open state.
The best temperature of the first heat exchange medium is about 90 ℃ when the engine is in operation, and the temperature of the first heat exchange medium is increased after the engine is cooled and exchanges heat. Thus, in the embodiment of the invention, the battery heat exchange component 21 can be integrated into the engine heat exchange circuit 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 for heating the battery, so that the heat absorbed by the first heat exchange medium when the engine 12 is cooled can be fully utilized to meet the heating requirement of the battery, and the first heat exchange medium can be cooled at the same time, thereby improving the energy utilization efficiency of the whole vehicle, saving active heating equipment in the prior art, and being beneficial to simplifying the structure of the battery heat exchange circuit 2 for convenient arrangement.
It should be noted that, the embodiment of the present invention is not limited to the opening and closing timing of the first switch valve 22 and the second switch valve 23, which is specifically related to the type, performance, etc. of the battery, and in practical application, a person skilled in the art may set the opening and closing timing according to actual needs, so as to introduce the first heat exchange medium into the battery heat exchange component 21 in good time; in addition, the embodiment of the present invention is not limited to the structure of the battery heat exchange member 21, and a person skilled in the art may select the structure according to actual needs, for example, a water cooling plate or the like.
Further, a motor heat exchange circuit 3 may be further included, the motor heat exchange circuit 3 may include a second power pump 31 for providing a second heat exchange medium to the motor 32, the aforementioned battery heat exchange circuit 2 may be connected to two ends of the motor 32 in parallel through the third switch valve 24 and the fourth switch valve 25, and when the battery has a cooling requirement, the third switch valve 24 and the fourth switch valve 25 may be in an open state, so as to introduce the second heat exchange medium (the second heat exchange medium with a relatively low temperature) that has not cooled the motor 32 into the battery heat exchange circuit 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 circuit 1 may be introduced, and when the battery has a cooling requirement, the second heat exchange medium of the motor heat exchange circuit 3 may be introduced, that is, the battery heat exchange circuit 2 may not have the own heat exchange medium, which is equivalent to omitting a separate heat exchange circuit, at least one power pump, one liquid supply part and one radiator may be omitted, and thus the structure of the thermal management system provided by the invention may be simplified to a greater extent.
The embodiments of the present invention are not limited to the types of the first heat exchange medium and the second heat exchange medium, and may be selected by those skilled in the art according to actual needs when the embodiments are specifically implemented. In general, the first heat exchange medium and the second heat exchange medium can be water or oil.
With continued reference to fig. 1, the above-mentioned battery heat exchange circuit 2 may further include a cooling component 26, where the cooling component 26 may be located upstream of the battery heat exchange component 21, and a fifth switch valve 27 may be connected in parallel to two ends of the cooling component 26, where the fifth switch valve 27 may be in a closed state when the second cooling medium from the motor heat exchange circuit 3 has a cooling requirement, and conversely, the fifth switch valve 27 may be in an open state.
If the ambient temperature is very high, which results in a higher temperature of the second heat exchange medium of the motor heat exchange circuit 3, the fifth switching valve 27 may be closed, so that the second heat exchange medium may first enter the cooling member 26 for cooling before entering the battery heat exchange member 21, and when the second heat exchange medium has no cooling requirement, the second switching valve 27 may be opened again to form a bypass flow path, and the second heat exchange medium may be directly guided into the battery heat exchange member 21. The structure of the cooling member 26 is not limited herein.
The motor heat exchange circuit 3 may further comprise a second radiator 33 and a second liquid supply part 34, wherein the second liquid supply part 34 may be a water tank, a water kettle or the like, for providing the motor heat exchange circuit 3 with a second heat exchange medium, and the second radiator 33 may be used for cooling the second heat exchange medium with a higher temperature after passing through the battery heat exchange circuit 2 and/or the motor 32.
In connection with fig. 1, the second radiator 33 and the second liquid supply part 34 may be arranged in parallel, i.e. the second heat exchange medium passing through the battery heat exchange circuit 2 and/or the motor 32 may not be entirely introduced into the second radiator 33, because the heat dissipation capacity of the second radiator 33 may be large, and only a part of the second heat exchange medium needs to be introduced into the second radiator 33 at this time, so as to control the temperature of the second heat exchange medium output by the second power pump 31. Of course, the second radiator 33 and the second liquid supply member 34 may be provided in series, which is particularly associated with the structure, heat radiation capability, and the like of the second radiator 33.
In conventional solutions, the engine 12 may also be designed as a supercharged engine to improve the power performance of the engine 12, and at this time, an intercooler heat exchange circuit is also required to be provided, and at present, the intercooler heat exchange circuit is also independently provided, which results in a complicated design of coexistence of the engine, the motor, the battery and the intercooler four heat exchange circuits commonly existing in the prior art.
In this regard, in the embodiment of the present invention, the inter-cooling flow path 35 may be further connected in series in the motor heat exchange circuit 3, and the inter-cooling flow path 35 may be located upstream of the motor 32, so as to further improve the integration level of the thermal 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 40-60 ℃, when the ambient temperature is low, with the above design, the second heat exchange medium can flow through the inter-cooling flow path 35 before flowing into the motor 32, so as to raise the temperature of 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 the motor 32 can be cooled better.
The types and numbers of the components contained in the intercooler flow path 35 may refer to a conventional intercooler heat exchange circuit, and in the scheme of the drawings, the intercooler flow path 35 may include a water-air intercooler 351 and a supercharger water jacket 352 disposed in parallel, and the structures of the two components may refer to the prior art.
Further, a sixth switching valve 36 may be connected in parallel to both ends of the intercooler flow path 35, and a seventh switching valve 37 may be connected in parallel to both ends of the motor 32, the sixth switching valve 36 may construct a bypass flow path for the intercooler flow path 35, the seventh switching valve 37 may construct a bypass flow path for the motor 32, the sixth switching valve 36 may be opened when the intercooler flow path 35 is not needed, and the seventh switching valve 37 may be opened when the motor 32 is not needed to be cooled.
Referring to fig. 1 again, the engine heat exchange circuit 1 may further include a first liquid supply part 13 and a first radiator 14, where the first liquid supply part 13 may be a water tank, a water kettle, etc. specifically, the first liquid supply part 13 is configured to provide a first heat exchange medium for the engine heat exchange circuit 1, 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 because the battery heat exchange part 21 bears a part of the cooling function, the heat dissipation requirement for the first radiator 14 may be reduced appropriately, which is also beneficial to reduce the cost. In addition, the battery heat exchanging member 21 may be connected in parallel to other positions of the engine heat exchanging circuit 1, for example, upstream of the first radiator 14, as long as the aforementioned effects can be achieved.
Here, the embodiment of the present invention is not limited to the above-described structures of the first heat sink 14 and the second heat sink 33, and those skilled in the art can select according to actual needs when implementing the present invention.
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 structure of these components is not limited herein, and the location of these components in the engine heat exchange circuit 1 may refer to fig. 1, where the thermostat 15 may directly receive the first heat exchange medium flowing through the engine 12 and may distribute the first heat exchange medium, and most of these components may flow directly through the first radiator 14 to the first power pump 11, some of these components may flow through the first switching valve 22 to the battery heat exchange circuit 2, some of these components may flow through the warm air heat exchanger 18 and the EGR (Exhaust Gas recirculation) heat exchanger 19, where the warm air heat exchanger 18 may utilize waste heat of the engine 12 to provide heat for the warm air system, and some of these components may flow through the gearbox oil cooler 17 and the engine oil cooler 16 to the first power pump 11.
The first switching valve 22, the second switching valve 23, the fourth switching valve 25, the fifth switching valve 27, the sixth switching valve 36 and the seventh switching valve 37 may be solenoid valves, and may be opened and closed by themselves in response to a signal.
The following examples of the present invention may also describe the operation of the thermal management system under several typical operating conditions with respect to the thermal management system according to the foregoing embodiments.
Typical operating condition one: the environment temperature is low, the engine 12 is stable, 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, 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, and thus, 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;
typical operating conditions 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;
typical operating conditions 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 the motor heat exchange loop 3 in parallel, 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 so as to cool the battery;
typical operating conditions are four: the temperature of the second heat exchange medium of the motor heat exchange loop 3 is higher than the third working condition, and the fifth switch valve 27 is required to be closed to cool the second heat exchange medium by the cooling component 26, so as to ensure the cooling effect on the battery.
In the description of the above-mentioned several typical operation conditions, the descriptions of "low ambient temperature", "moderate ambient temperature", "high ambient temperature" and "ultra-high ambient temperature" are referred to, and in actual operation, different temperature thresholds may be set to divide the above-mentioned several intervals so as to perform on-off control for the corresponding on-off valves.
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 according to the embodiment.
Since the above-mentioned thermal management system of the hybrid electric vehicle has the technical effects as described above, the hybrid electric vehicle having the thermal management system also has similar technical effects, and thus will not be described herein.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (8)
1. A thermal management system of a hybrid electric vehicle, comprising an engine heat exchange loop (1) and a battery heat exchange loop (2), characterized in that the engine heat exchange loop (1) comprises a first power pump (11) for providing a first heat exchange medium for an engine (12), the battery heat exchange loop (2) comprises a battery heat exchange component (21), two ends of the battery heat exchange component (21) are respectively connected in parallel with the engine heat exchange loop (1) through a first switch valve (22) and a second switch valve (23), the merging position of the battery heat exchange component (21) is positioned at the downstream of the engine (12), and when a battery has a heating requirement, the first switch valve (22) and the second switch valve (23) are in an open state;
the electric motor heat exchange circuit (3) comprises a second power pump (31) and is used for providing a second heat exchange medium for the electric motor (32), the battery heat exchange circuit (2) is connected in parallel with two ends of the electric motor (32) through a third switch valve (24) and a fourth switch valve (25), and when the battery has a cooling requirement, the third switch valve (24) and the fourth switch valve (25) are in an open state;
the battery heat exchange loop (2) further comprises a cooling component (26), the cooling component (26) is located at the upstream of the battery heat exchange component (21), a fifth switch valve (27) is connected at two ends of the cooling component (26) in parallel, and when the second heat exchange medium from the motor heat exchange loop (3) has a cooling requirement, the fifth switch valve (27) is in a closed state, and conversely, the fifth switch valve (27) is in an open state.
2. The thermal management system of a hybrid vehicle according to claim 1, wherein the electric machine heat exchange circuit (3) further comprises a second radiator (33) and a second liquid supply member (34).
3. The thermal management system of a hybrid vehicle according to claim 1, wherein the engine (12) is a supercharged engine, and the motor heat exchange circuit (3) is further connected in series with an intercooler flow path (35), the intercooler flow path (35) being located upstream of the motor (32).
4. A thermal management system of a hybrid vehicle according to claim 3, characterized in that the intercooling flow path (35) comprises a water-air intercooler (351) and a supercharger water jacket (352) arranged in parallel.
5. A thermal management system of a hybrid vehicle according to claim 3, wherein a sixth switching valve (36) is connected in parallel to both ends of the inter-cooling flow path (35), and a seventh switching valve (37) is connected in parallel to both ends of the motor (32).
6. A thermal management system of a hybrid vehicle according to any of claims 1-5, characterized in that the engine heat exchange circuit (1) further comprises a first liquid supply part (13) and a first radiator (14), the battery heat exchange part (21) being connected in parallel across the first radiator (14).
7. A thermal management system of a hybrid vehicle according to any of claims 1-5, characterized in that the engine heat exchange circuit (1) further comprises 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).
8. 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 1-7.
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| Application Number | Priority Date | Filing Date | Title |
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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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| CN202011231828.XA CN114435115B (en) | 2020-11-06 | 2020-11-06 | Hybrid electric vehicle and thermal management system thereof |
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| CN114435115A CN114435115A (en) | 2022-05-06 |
| CN114435115B true CN114435115B (en) | 2024-03-08 |
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