CN211493635U - Driving motor power assembly cooling system, thermal management system and extended range vehicle - Google Patents

Driving motor power assembly cooling system, thermal management system and extended range vehicle Download PDF

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Publication number
CN211493635U
CN211493635U CN201921390472.7U CN201921390472U CN211493635U CN 211493635 U CN211493635 U CN 211493635U CN 201921390472 U CN201921390472 U CN 201921390472U CN 211493635 U CN211493635 U CN 211493635U
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China
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way valve
port
normally
open
power
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CN201921390472.7U
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Chinese (zh)
Inventor
孙凯民
时乐
赵贺
李志伟
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Beiqi Foton Motor Co Ltd
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Beiqi Foton Motor Co Ltd
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Abstract

The disclosure relates to a driving motor power assembly cooling system, a thermal management system and a range extending vehicle. This driving motor power assembly cooling system includes: the power assembly cooling loop is formed by sequentially connecting a first water pump, a driving motor, a power accessory, a low-temperature radiator and a first normally-open three-way valve; the driving motor is connected with a plurality of accessories in the power accessory in a series-parallel mixed connection mode, one end of the driving motor after the driving motor is connected with the power accessory in a series-parallel mixed connection mode is connected with the first water pump, the other end of the driving motor is connected with the low-temperature radiator, the A port and the B port of the first normally-open three-way valve are respectively connected with the low-temperature radiator and the first water pump, and the C port of the first normally-open three-way valve is used for providing a cooling medium for a power assembly cooling loop. Therefore, the length of the power cooling loop can be shortened, the flow resistance in the loop is reduced, the effective cooling is ensured, the power of the first water pump is reduced, and the purposes of saving the electric energy consumption of the whole vehicle and improving the driving range can be achieved.

Description

Driving motor power assembly cooling system, thermal management system and extended range vehicle
Technical Field
The disclosure relates to the technical field of vehicles, in particular to a driving motor power assembly cooling system, a thermal management system and a range extending vehicle.
Background
With the social requirements on environmental protection and energy conservation becoming higher and higher, new energy vehicles are more and more paid attention by governments and automobile manufacturers. For example, an increasing number of new energy range-extended electric vehicles are on the market, wherein the range-extended electric vehicles are electric vehicles that use other energy sources (such as gasoline) for electric energy supply under the condition that the battery power is exhausted.
Because the range-extended electric vehicle (hereinafter referred to as a range-extended vehicle) uses the battery and the range extender as the driving power source, there are some technical difficulties in the actual research and development process: 1. the service life and the service efficiency of the battery are closely related to the temperature, and for example, the service life and the endurance of the battery are influenced by over-high temperature and under-low temperature, so that the battery needs to be cooled down or heated. 2. The range extender is used as driving power of the range extender, the range extender generates larger heat during operation and needs to dissipate heat in time, the interior of the range extender needs to be heated in winter and cooled in summer, and the power comes from batteries, so that how to save the electric energy consumption of the whole vehicle and improve the driving range is always the direction of the range extender to be developed.
SUMMERY OF THE UTILITY MODEL
The purpose of the disclosure is to provide a driving motor power assembly cooling system, a thermal management system and an extended range vehicle, wherein the thermal management system can achieve the purposes of saving the electric energy consumption of the whole vehicle and improving the cruising ability
In order to achieve the above object, a first aspect of the present disclosure provides a drive motor powertrain cooling system, comprising: the power assembly cooling loop is formed by sequentially connecting a first water pump, a driving motor, a power accessory, a low-temperature radiator and a first normally-open three-way valve;
the driving motor is connected with a plurality of accessories in the power accessories in a series-parallel mixed connection mode, one end of the driving motor after the series-parallel mixed connection with the power accessories is connected with the first water pump, the other end of the driving motor is connected with the low-temperature radiator, an A port and a B port of the first normally-open three-way valve are respectively connected with the low-temperature radiator and the first water pump, and a C port of the first normally-open three-way valve is used for providing a cooling medium for the power assembly cooling loop.
Optionally, the powered accessory comprises: the system comprises a high-voltage distribution controller, a power integration unit PEU, a generator controller and a range-extended generator;
the high-voltage distribution controller and the power integration unit PEU are connected in series to form a first branch circuit;
the generator controller and the driving motor are connected in series to form a second branch circuit, wherein the first branch circuit and the second branch circuit are connected in parallel;
the range-extended generator is connected in series between the first branch and the second branch which are connected in parallel and the low-temperature radiator.
A second aspect of the present disclosure provides a thermal management system comprising: the drive motor powertrain cooling system, air conditioning system, power battery cooling system, range extender system and control system as provided by the first aspect of the present disclosure;
the driving motor power assembly cooling system, the air conditioning system, the power battery cooling system and the range extender system are controlled by the control system.
Optionally, the air conditioning system includes an air conditioning refrigeration circuit formed by sequentially connecting an electric compressor, a condenser, a first electronic expansion valve, and an evaporator in series;
the power battery cooling system comprises a power battery cooling loop formed by sequentially connecting the electric compressor, the condenser, the second electronic expansion valve, the heat exchanger, the second normally-open three-way valve, the second water pump and the power battery in series, wherein an opening A and an opening B of the second normally-open three-way valve are respectively connected with the heat exchanger and the second water pump, and an opening C of the second normally-open three-way valve is used for providing a cooling medium for the power battery cooling loop.
Optionally, the priority of the power battery cooling circuit is higher than that of the air conditioner refrigeration circuit, and the evaporator is an energy storage type evaporator.
Optionally, the thermal management system further comprises: a first water tank for storing water to be used,
the port C of the first normally-open three-way valve, the low-temperature radiator, the port C of the second normally-open three-way valve and the heat exchanger are all connected with the first water tank.
Optionally, the air conditioning system includes an air conditioning heating loop formed by sequentially connecting an adjustable three-way valve, a third normally-open three-way valve, a third water pump, a PTC heater, and a warm air core in series in a first operating mode, where an a port and a C port of the adjustable three-way valve are connected to the warm air core and the C port of the third normally-open three-way valve, respectively, a B port of the third normally-open three-way valve is connected to the third water pump, and the a port of the adjustable three-way valve is communicated with the C port of the adjustable three-way valve in the first operating mode;
the range extender system comprises an adjustable three-way valve, a range extender, a fourth normally-open three-way valve, a range extender waste heat circuit and a range extender waste heat circuit, wherein the adjustable three-way valve, the range extender, the fourth normally-open three-way valve, the third water pump, the PTC heater and the warm air core are sequentially connected in series to form the range extender waste heat circuit, the range extender is respectively connected with a port B of the adjustable three-way valve and a port C of the fourth normally-open three-way valve, a port B of the fourth normally-open three-way valve is connected with a port A of the third normally-open three-way valve, the port A of the adjustable three-way valve is communicated with a port B of the adjustable three-way valve, and the port A of the fourth normally-open three-way valve is used for discharging.
Optionally, the range extender system further comprises a range extender cooling circuit formed by connecting the range extender and the water tank radiator in series.
Optionally, the heat management system comprises a second water tank, and an opening a of a fourth normally-open three-way valve in the range extender waste heat loop and the water tank radiator in the range extender cooling loop are both connected with the second water tank.
The third aspect of the present disclosure also provides an extended range vehicle, including: the thermal management system is arranged on the vehicle body.
The drive motor powertrain cooling system provided by the present disclosure may include: the power assembly cooling loop is formed by sequentially connecting a first water pump, a driving motor, a power accessory, a low-temperature radiator and a first normally-open three-way valve; the driving motor is connected with a plurality of accessories in the power accessory in a series-parallel mixed connection mode, one end of the driving motor after the driving motor is connected with the power accessory in a series-parallel mixed connection mode is connected with the first water pump, the other end of the driving motor is connected with the low-temperature radiator, the A port and the B port of the first normally-open three-way valve are respectively connected with the low-temperature radiator and the first water pump, and the C port of the first normally-open three-way valve is used for providing a cooling medium for a power assembly cooling loop. Therefore, the length of the power cooling loop can be shortened, the flow resistance in the loop is reduced, the effective cooling is ensured, the power of the first water pump is reduced, and the purposes of saving the electric energy consumption of the whole vehicle and improving the driving range can be achieved.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
FIG. 1 is a block diagram illustrating a thermal management system in accordance with an exemplary embodiment.
FIG. 2 is a schematic diagram illustrating a thermal management system in accordance with an exemplary embodiment.
FIG. 3 is a block diagram illustrating a power accessory according to an exemplary embodiment.
Description of the reference numerals
1 driving motor power assembly cooling system 2 air conditioning system
3 power battery cooling system 4 increases journey ware system
5 control system 10 first Water Pump
11 drive motor 12 power accessory
13 low-temperature radiator 14 first normally open three-way valve
121 high-voltage distribution controller 122 power integration unit PEU
123 generator controller 124 range-extended generator
21 electric compressor 22 condenser
23 first electronic expansion valve 24 evaporator
25 adjustable three-way valve 26 third normally open three-way valve
27 third water pump 28 PTC heater
29 second electronic expansion valve of warm air core body 31
32 heat exchanger 33 second normally open three-way valve
34 second water pump 35 power battery
41 increase journey ware 42 fourth normal open three-way valve
43 tank radiator 6 first tank
7 second water tank
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
In the present disclosure, the terms "first", "second", and the like used in the embodiments of the present disclosure are used for distinguishing one element from another element without order or importance. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated.
In view of the fact that the related art does not have many ways to perform thermal management on the extended range vehicle, even though some extended range vehicles have thermal management systems, most of the systems in the vehicles perform thermal management, and therefore, in order to sufficiently save the electric energy consumption of the extended range vehicles, the disclosure provides a drive motor powertrain cooling system, a thermal management system and an extended range vehicle.
FIG. 1 is a block diagram illustrating a thermal management system in accordance with an exemplary embodiment. As shown in fig. 1, the thermal management system may include: the system comprises a driving motor power assembly cooling system 1, an air conditioning system 2, a power battery cooling system 3, a range extender system 4 and a control system 5. The driving motor power assembly cooling system 1, the air conditioning system 2, the power battery cooling system 3 and the range extender system 4 are all controlled by the control system 5.
It should be noted that, in the extended range vehicle, four systems, i.e., a driving motor powertrain cooling system 1, an air conditioning system 2, a power battery cooling system 3, and a range extender system 4, are mainly included in the extended range vehicle in a normal situation, in the present disclosure, the inventor performs thermal management on the systems mainly included in the extended range vehicle, and compared with performing thermal management on only a part of the systems in the related art, the present disclosure can fully utilize the energy of each system included in the extended range vehicle to perform cooling or heating, so that the electric energy consumption of the extended range vehicle can be fully saved, and the purpose of extending the driving range can be achieved.
Referring specifically to FIG. 2, FIG. 2 is a schematic diagram of a thermal management system shown in accordance with an exemplary embodiment. As shown in fig. 2, the drive motor powertrain cooling system 1 in fig. 1 may include a powertrain cooling circuit formed by sequentially connecting a first water pump 10, a drive motor 11, a power accessory 12, a low-temperature radiator 13, and a first normally-open three-way valve 14. The normally open three-way valve is a three-way valve in which three ports are normally open. All the components in the circuits referred to in this disclosure are connected by pipes.
Generally, the cooling circuits of the driving motor and the power accessories of the existing extended range vehicle are series cooling circuits, and because the number of the accessories of the power accessories in the extended range vehicle is large, when the series circuits are adopted, the circuits are long, so that the defects that the flow resistance of the circuits is large, the cooling temperature is not easy to control, and the cooling effect of the cooling tail end is poor are caused. Based on the above problems, the inventor considers that the series-parallel mixed connection mode can be adopted in the loop to shorten the loop length and reduce the flow resistance of the loop, so that the cooling effect on each accessory in the loop can be improved.
In addition, in the present disclosure, since the pipelines used in the parallel branches are of the same specification, that is, the flow rates of the cooling medium flowing in each of the parallel branches are the same, in order to sufficiently cool the accessories on each of the parallel branches, the flow resistances of the accessories need to be considered comprehensively when determining the accessories connected in series or in parallel, so as to ensure that the total flow resistances of the accessories connected in series on each of the parallel branches are the same.
For example, as shown in FIG. 3, the powered accessory 12 may include: a high voltage distribution controller 121, a power integration unit PEU122, a generator controller 123, and a range extender generator 124. From the flow resistance calculations for the four accessories and the drive motor 11, it is found that the total flow resistance of the high voltage distribution controller 121 and the power integration unit PEU122 is relatively close to the total flow resistance of the generator controller 123 and the drive motor 11, and therefore, in the present disclosure, the high voltage distribution controller 121 and the power integration unit PEU122 are connected in series to form a first branch circuit, and the generator controller 123 and the drive motor 11 are connected in series to form a second branch circuit, wherein the first branch circuit and the second branch circuit are connected in parallel. The range-extended generator 124 is connected in series between the first branch and the second branch after being connected in parallel and the low-temperature radiator 13. The other end of the low-temperature radiator 13 is connected with an opening a of a first normally-open three-way valve 14, an opening B of the first normally-open three-way valve 14 is connected with a first water pump 10, the first water pump 10 is connected with a first branch and a second branch which are connected in parallel, and an opening C of the first normally-open three-way valve 14 is used for providing a cooling medium for the power cooling loop, wherein the cooling medium can be an antifreeze solution.
In this way, a user can supply a cooling medium to the power cooling circuit through the port C of the first normally open three-way valve 14, and the cooling medium flows into the first branch formed by the high-voltage distribution controller 121 and the power integration unit PEU122 and the second branch formed by the generator controller 123 and the driving motor 11 simultaneously under the driving action of the first water pump 10, then flows through the range-extended generator 124 and the low-temperature radiator 13, and then returns to the first water pump 10 through the ports a and B of the first normally open three-way valve 14. Therefore, the length of the power cooling circuit can be shortened, the flow resistance in the circuit is reduced, and the purpose of fully cooling each component in the circuit is achieved. In addition, because the flow resistance in the loop is reduced, the power of the first water pump 10 can be reduced, and the purposes of saving the electric energy consumption of the whole vehicle and improving the driving range are achieved.
As shown in fig. 2, the air conditioning system 2 may include an air conditioning refrigeration circuit formed by sequentially connecting in series an electric compressor 21, a condenser 22, a first electronic expansion valve 23, and an evaporator 24. In this circuit, the control system 5 controls the electric compressor 21 to start operating when receiving a cooling request input by a user, and controls the first electronic expansion valve 23 to open, so that the cool air provided by the electric compressor 21 can enter the cabin of the vehicle through the condenser 22, the first electronic expansion valve 23 and the evaporator 24 for cooling the user. The control system 5 is not shown in fig. 2. It should be noted that, a user may send a cooling request to the control system 5 through a cooling button in a center console of the vehicle, or may send a cooling request to the control system 5 through a terminal in communication with the thermal management system, which is not limited in this disclosure.
In addition, in the present disclosure, the power battery cooling system 3 includes a power battery cooling circuit formed by sequentially connecting in series the electric compressor 21, the condenser 22, the second electronic expansion valve 31, the heat exchanger 32, the second normally-open three-way valve 33, the second water pump 34, and the power battery 35. The port a and the port B of the second normally-open three-way valve 33 are respectively connected with the heat exchanger 32 and the second water pump 34, and the port C of the second normally-open three-way valve 33 is used for providing a cooling medium for the power battery cooling circuit, wherein the cooling medium may also be an antifreeze solution.
It should be noted that the heat exchanger 32 may include two regions, wherein the first region has an inlet and an outlet respectively defined as K1 and K2, and the second region has an inlet and an outlet respectively defined as K3 and K4. As shown in fig. 2, the inlet K1 of the first region is connected to the second electronic expansion valve 31, the outlet K2 of the first region is connected to the electric compressor 21, and the cooling medium flowing in the first region is a cooling liquid (for example, a fluorine cooling liquid); the inlet K3 of the second area is connected with the power battery 35, the outlet K4 of the second area is connected with the port a of the second normally open three-way valve 33, meanwhile, the outlet K4 is also used for discharging gas generated by the cooling circuit of the power battery, and the cooling medium in the second area is antifreeze.
In this circuit, when the control system 5 detects that the temperature of the power battery is higher than the first preset temperature, the electric compressor 21 is controlled to start and the second electronic expansion valve 31 is controlled to open, so that the fluorine coolant supplied from the electric compressor 21 can flow into the first region of the heat exchanger 32 through the condenser 22 and the second electronic expansion valve 31, and the antifreeze in the second region is cooled in the first region, so that the cooled antifreeze is injected into the power battery 35 through the outlet K4 of the second region, the ports a and B of the second normal three-way valve 33, and the second water pump 34, and the power battery 35 is cooled.
It should be noted that, in the present disclosure, the electric compressor 21 is shared by the power battery cooling circuit and the air-conditioning refrigeration circuit, and the priority of the power battery cooling circuit is higher than that of the air-conditioning refrigeration circuit in the normal case, that is, when the power battery and the user located in the cabin of the vehicle have a cooling demand at the same time, the first electronic expansion valve 23 and the second electronic expansion valve 31 in fig. 2 are simultaneously opened, and the cooling liquid flowing out of the cooler 22 preferentially flows into the first region of the heat exchanger 32 through the second electronic expansion valve 31 to cool the temperature of the power battery 35. In this manner, when the power of the electric compressor 21 is insufficient, the provision of the cooling service to the user located in the cabin of the vehicle is automatically stopped in order to cool the power battery 35, resulting in poor comfort for the user.
In order to solve the above problem, in an embodiment, the evaporator 24 may be an energy storage evaporator, and when the temperature of the power battery 35 is not higher than the first preset temperature, part of the cold energy may be stored by the energy storage evaporator, so that when the power of the electric compressor 21 is not enough, but the power battery 35 also needs to be cooled, the energy storage evaporator is controlled to release the cold energy to cool a user located in a driving cabin of the vehicle, so as to meet the cooling requirements of the power battery and the user at the same time, and also not to consume extra electric energy, thereby further achieving the purpose of saving the electric energy consumption of the entire vehicle and improving the driving range.
As shown in fig. 2, the air conditioning system 2 further includes an air conditioning and heating circuit formed by sequentially connecting an adjustable three-way valve 25, a third normally-open three-way valve 26, a third water pump 27, a PTC heater 28 and a heater core 29 in series in the first operation mode. The port a and the port C of the adjustable three-way valve 25 are respectively connected to the warm air core 29 and the port C of the third normally-open three-way valve 26, the port B of the third normally-open three-way valve 26 is connected to the third water pump 27, and the port a of the adjustable three-way valve 25 is communicated with the port C of the adjustable three-way valve 25 in the first working mode.
The range extender system 4 may include a range extender waste heat loop formed by sequentially connecting an adjustable three-way valve 25, a range extender 41, a fourth normally-open three-way valve 42, a third normally-open three-way valve 26, a third water pump 27, a PTC heater 28 and a warm air core 29 in series in a second working mode. Wherein, increase journey ware 41 and link to each other with the B mouth of adjustable three-way valve 25, the C mouth of fourth normally open three-way valve 42 respectively, the B mouth of fourth normally open three-way valve 42 links to each other with the A mouth of third normally open three-way valve 26, and the second mode of operation is the A mouth of adjustable three-way valve 25 and the B mouth intercommunication of adjustable three-way valve 25, and the A mouth of fourth normally open three-way valve 42 is arranged in discharging the gas that produces in increasing journey ware waste heat return circuit.
In the thermal management system, when receiving a heating request input by a user, the control system 5 firstly determines the temperature of the range extender 41, and if the temperature of the range extender 41 is less than a second preset temperature, controls the adjustable three-way valve 25 to operate in a first operating mode, that is, controls the port a and the port C of the adjustable three-way valve 25 to communicate with each other, and controls the PTC heater 28 to start a heating function. In this way, the antifreeze is heated by the PTC heater 28 by the driving of the third water pump 27, flows into the warm air core 29, and returns to the third water pump 27 through the ports a and C of the variable three-way valve 25 to form an air conditioning and heating circuit. The heated antifreeze solution radiates heat into the passenger compartment to heat the user when passing through the heater core 29.
And if the temperature of the range extender 41 is greater than or equal to a second preset temperature, controlling the adjustable three-way valve 25 to work in a second working mode, namely controlling the port A and the port B of the adjustable three-way valve 25 to be communicated, and controlling the PTC heater 28 to stop the heating function. Thus, under the driving of the water pump of the range extender 41, the antifreeze returns to the range extender 41 through the port C and the port B of the fourth normally-open three-way valve 42, the port a and the port B of the third normally-open three-way valve 26, the third water pump 27, the PTC heater 28, the warm air core 29, and the port a and the port B of the adjustable three-way valve 25, so as to form a range extender waste heat loop. The heat provided by the range extender 41 is dissipated into the cockpit for heating of a user when passing through the hot air core 29.
By adopting the technical scheme, the heat generated by the range extender during working is fully utilized for heating a user, the purpose of utilizing the waste heat of the range extender is achieved, the electric quantity consumed by the PTC heater during heating can be reduced, and the driving range of a vehicle is increased.
In addition, considering that the service life of the range extender 41 is affected if the temperature of the range extender 41 is too high when the user does not need heating, in the present disclosure, the range extender system 4 further includes a range extender cooling circuit formed by connecting the range extender 41 and the water tank radiator 43 in series. Wherein, this water tank radiator 43 is used for distributing the heat that increases journey ware 41 during operation and produce to reduce the temperature that increases journey ware 41.
It should be noted that each of the above mentioned circuits is usually connected to a water tank for water replenishment and air removal for each circuit, and therefore, in the existing thermal management systems, a plurality of water tanks are usually installed, and the number of water tanks is equal to the number of circuits included in the thermal management system.
The heat management system provided by the disclosure comprises a plurality of loops, if the water tanks are configured according to the existing scheme, the number of the water tanks is large, the hardware design is complex, the occupied space is large, and a user cannot quickly find the water tank needing to be added with the cooling medium when filling the cooling medium and easily omits the water tank. Therefore, in the disclosure, a plurality of loops included in the thermal management system are classified according to the temperature in the loops, each class corresponds to one water tank, and loops belonging to the same class can share one water tank, so that the number of water tanks can be reduced, the cost is saved, the design of the whole vehicle is simplified, and meanwhile, a user can conveniently and quickly find the water tank to which the cooling medium needs to be added.
For example, the loops may be classified according to the temperature of each loop, for example, the loops with the temperature zone of [10 ℃,15 ℃) may be determined as the same category of loops, and the first water tank corresponding to the category of loops; for example, the number of water tanks can be two, three, four or five, and the disclosure is described only by taking the thermal management system as an example including two water tanks for convenience of description.
As shown in fig. 2, the thermal management system may further include: the first tank 6, the port C of the first normally-open three-way valve 14, the low-temperature radiator 13, the port C of the second normally-open three-way valve 33, and the heat exchanger 32 are connected to the first tank 6. The first water tank 6 has two water replenishing ports and two exhaust ports, the two water replenishing ports of the first water tank 6 are respectively connected with the port C of the first normally-open three-way valve 14 and the port C of the second normally-open three-way valve 33 for supplying cooling media to the power assembly cooling circuit and the power battery cooling circuit, and the two exhaust ports of the first water tank 6 are respectively connected with the outlet K4 of the second area of the heat exchanger 32 and the low-temperature radiator 13 for exhausting gas generated in the power battery cooling circuit and the power assembly cooling circuit.
In addition, the thermal management system may further include: the first water tank 7, the A port of the fourth normally open three-way valve 42 in the range extender waste heat loop and the water tank radiator 43 in the range extender cooling loop are both connected with the second water tank 7. Wherein, second water tank 7 has one and mends mouth of a river and two gas vents, and this second water tank 7 mends the mouth of a river and links to each other with water tank radiator 43 for increase journey ware cooling circuit and provide coolant, this coolant can be antifreeze for. Two exhaust ports of the second water tank 7 are respectively connected with a port A of the water tank radiator 43 and a port A of the fourth normally-open three-way valve 42 and used for exhausting gas generated in the range extender cooling circuit and the range extender waste heat circuit.
By adopting the technical scheme, the quantity of the water tanks is effectively reduced, the whole vehicle management is convenient, the whole vehicle design is simplified, the user detection and maintenance are convenient, and the whole vehicle cost is reduced.
The present disclosure also provides an extended range vehicle, comprising: the thermal management system is arranged on the vehicle body.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, various possible combinations will not be separately described in this disclosure.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims (10)

1. A drive motor powertrain cooling system, comprising: the power assembly cooling loop is formed by sequentially connecting a first water pump (10), a driving motor (11), a power accessory (12), a low-temperature radiator (13) and a first normally open three-way valve (14);
the driving motor (11) is connected with a plurality of accessories in the power accessory (12) in a series-parallel mixed connection mode, one end of the driving motor (11) after the power accessory (12) is connected with the first water pump (10) in a series-parallel mixed connection mode, the other end of the driving motor is connected with the low-temperature radiator (13), an A port and a B port of the first normally-open three-way valve (14) are respectively connected with the low-temperature radiator (13) and the first water pump (10), and a C port of the first normally-open three-way valve (14) is used for providing a cooling medium for the power assembly cooling loop.
2. Drive motor powertrain cooling system according to claim 1, characterized in that the power accessory (12) comprises: the system comprises a high-voltage distribution controller (121), a power integration unit PEU (122), a generator controller (123) and a range-extended generator (124);
the high-voltage distribution controller (121) and the power integration unit PEU (122) are connected in series to form a first branch circuit;
the generator controller (123) and the driving motor (11) are connected in series to form a second branch, wherein the first branch and the second branch are connected in parallel;
the range-extended generator (124) is connected in series between the first branch and the second branch after being connected in parallel and the low-temperature radiator (13).
3. A thermal management system, comprising: the drive motor powertrain cooling system, air conditioning system, power battery cooling system, range extender system and control system of claim 1 or 2;
the driving motor power assembly cooling system, the air conditioning system, the power battery cooling system and the range extender system are controlled by the control system.
4. The thermal management system according to claim 3, characterized in that it comprises an air-conditioning refrigeration circuit formed by a motor-driven compressor (21), a condenser (22), a first electronic expansion valve (23) and an evaporator (24) connected in series in sequence;
the power battery cooling system comprises a power battery cooling loop formed by sequentially connecting an electric compressor (21), a condenser (22), a second electronic expansion valve (31), a heat exchanger (32), a second normally-open three-way valve (33), a second water pump (34) and a power battery (35) in series, wherein an opening A and an opening B of the second normally-open three-way valve (33) are respectively connected with the heat exchanger (32) and the second water pump (34), and an opening C of the second normally-open three-way valve (33) is used for providing a cooling medium for the power battery cooling loop.
5. The thermal management system of claim 4, wherein the power battery cooling circuit is prioritized over the air conditioning refrigeration circuit, and the evaporator (24) is an accumulator evaporator.
6. The thermal management system of claim 4, further comprising: a first water tank (6),
the port C of the first normally open three-way valve (14), the low-temperature radiator (13), the port C of the second normally open three-way valve (33) and the heat exchanger (32) are connected with the first water tank (6).
7. The thermal management system according to any one of claims 3 to 6, characterized in that the air conditioning system comprises an air conditioning heating circuit formed by sequentially connecting an adjustable three-way valve (25), a third normally-open three-way valve (26), a third water pump (27), a PTC heater (28) and a warm air core (29) in series in a first operation mode, wherein the A port and the C port of the adjustable three-way valve (25) are respectively connected with the warm air core (29) and the C port of the third normally-open three-way valve (26), the B port of the third normally-open three-way valve (26) is connected with the third water pump (27), and the A port of the adjustable three-way valve (25) is communicated with the C port of the adjustable three-way valve (25);
the range extender system comprises a range extender waste heat loop formed by sequentially connecting an adjustable three-way valve (25), a range extender (41), a fourth normally-open three-way valve (42), a third normally-open three-way valve (26), a third water pump (27), the PTC heater (28) and the warm air core body (29) in a second working mode in series, wherein the range extender (41) is respectively connected with the port B of the adjustable three-way valve (25) and the port C of the fourth normally open three-way valve (42), the port B of the fourth normally-open three-way valve (42) is connected with the port A of the third normally-open three-way valve (26), the second working mode is that the port A of the adjustable three-way valve (25) is communicated with the port B of the adjustable three-way valve (25), and an A port of the fourth normally-open three-way valve (42) is used for discharging gas generated in the range extender waste heat loop.
8. The thermal management system of claim 7, wherein the range extender system further comprises a range extender cooling circuit formed by connecting the range extender (41) and a water tank radiator (43) in series.
9. The thermal management system according to claim 8, comprising a second water tank (7), wherein an a port of a fourth normally-open three-way valve (42) in the range extender waste heat circuit and the water tank radiator (43) in the range extender cooling circuit are both connected to the second water tank (7).
10. An extended range vehicle, comprising: a vehicle body, a thermal management system according to any of claims 3 to 9, the thermal management system being disposed on the vehicle body.
CN201921390472.7U 2019-08-23 2019-08-23 Driving motor power assembly cooling system, thermal management system and extended range vehicle Active CN211493635U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112455288A (en) * 2020-12-24 2021-03-09 浙江吉利控股集团有限公司 Thermal management system of extended-range hybrid electric vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112455288A (en) * 2020-12-24 2021-03-09 浙江吉利控股集团有限公司 Thermal management system of extended-range hybrid electric vehicle
CN112455288B (en) * 2020-12-24 2022-03-22 浙江吉利控股集团有限公司 Thermal management system of extended-range hybrid electric vehicle

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