CN215621270U - Vehicle thermal management system and vehicle - Google Patents

Abstract

The utility model provides a vehicle thermal management system and a vehicle, wherein the vehicle thermal management system comprises: the electric control system comprises an air conditioning warm air loop, a battery thermal management loop and an electric drive thermal management loop, wherein the air conditioning warm air loop is suitable for heating a passenger compartment, the battery thermal management loop is suitable for adjusting the temperature of a battery, the electric drive thermal management loop is suitable for adjusting the temperature of a motor, the air conditioning warm air loop is in on-off connection with the battery thermal management loop and the electric drive thermal management loop, and the battery thermal management loop is in on-off connection with the electric drive thermal management loop. According to the vehicle thermal management system, the waste heat of the motor is recycled, the energy utilization rate is improved, the space utilization rate is improved, the loading cost is reduced, the energy consumption of the system can be reduced, and the cruising ability is improved.

Description

Vehicle thermal management system and vehicle

Technical Field

The utility model relates to the technical field of vehicles, in particular to a vehicle thermal management system and a vehicle.

Background

Along with the development of science and technology, to the thermal management of battery package, the traditional scheme is that a set of liquid cooling unit and PTC heating system increase alone, perhaps, the cooling system of battery and the air conditioner of driver's cabin are integrated together, cool off the battery through the heat transfer of coolant liquid and refrigerant, and a set of cooling system is increased alone again to motor and automatically controlled, however, so not only increased a lot of costs, occupation space is also great, is unfavorable for whole car to arrange, and the energy consumption of system is also great moreover.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the vehicle heat management system provided by the utility model occupies a small space, improves the space utilization rate, reduces the loading cost, is beneficial to reducing the system energy consumption, and improves the energy utilization rate, thereby improving the cruising ability of the vehicle.

The utility model also provides a vehicle with the vehicle thermal management system.

According to a first aspect of the present invention, a vehicle thermal management system comprises:

the air-conditioning warm air loop comprises a first water pump, a heater and a warm air core body which are sequentially connected, and is suitable for heating the passenger compartment;

the battery thermal management loop comprises a second water pump, a battery, a first radiator and a heat exchanger, wherein the second water pump is connected with the battery and is suitable for adjusting the temperature of the battery;

the electric drive heat management loop comprises a second radiator, a third water pump, an inverter and a motor which are sequentially connected, and is suitable for adjusting the temperature of the motor;

the air conditioner warm air loop is connected with the battery thermal management loop and the electric drive thermal management loop in an on-off mode, and the battery thermal management loop is connected with the electric drive thermal management loop in an on-off mode.

According to the vehicle thermal management system disclosed by the embodiment of the utility model, the electric drive thermal management loop, the battery thermal management loop and the air conditioner warm air loop are integrated together, so that the waste heat of the motor is recycled, and an additional cooling system is not required to be added, so that the occupied space is small, the space utilization rate is improved, and the loading cost is also reduced; in addition, because the first radiator is additionally arranged to cool the battery, when the ambient temperature is lower, the battery can be directly cooled through the first radiator without starting an air conditioning system of the vehicle, the energy consumption of the system is reduced, the energy utilization rate is improved, and the cruising ability of the vehicle is improved.

According to one embodiment of the utility model, in the air-conditioning warm air loop, the heater is connected with the warm air core through a first pipeline, and the warm air core is connected with the first water pump through a second pipeline;

in the battery thermal management loop, the first radiator is connected with the heat exchanger, the heat exchanger is connected with the second water pump in a switching mode through a third pipeline, and the battery is connected with the first radiator in a switching mode through a fourth pipeline;

in the electric drive heat management loop, the motor is connected with the second radiator in a break-make mode through a fifth pipeline, and the second radiator is connected with the third water pump through a sixth pipeline;

the fifth pipeline is respectively connected with the third pipeline and the first pipeline in a break-make manner through a seventh pipeline, and the sixth pipeline is respectively connected with the fourth pipeline and the second pipeline in a break-make manner through an eighth pipeline.

According to one embodiment of the present invention, the fifth line is provided with a proportional three-way valve, a first port of the proportional three-way valve is connected to the motor, a second port of the proportional three-way valve is connected to the second radiator, and a third port of the proportional three-way valve is connected to the seventh line.

According to one embodiment of the utility model, the second line is provided with a first three-way port communicating with the first end of the eighth line, and the sixth line is provided with a second three-way port communicating with the second end of the eighth line.

According to one embodiment of the utility model, the seventh line is connected to the first line by a normally closed solenoid valve.

According to one embodiment of the utility model, the first pipeline is provided with a third three-way port, and the normally closed solenoid valve is connected with the third three-way port.

According to one embodiment of the utility model, the third pipeline is provided with a first electromagnetic valve and a second electromagnetic valve, a first port of the first electromagnetic valve is connected with the second water pump, a second port of the first electromagnetic valve is communicated with a second port of the second electromagnetic valve, and a third port of the first electromagnetic valve is connected with the seventh pipeline through a fourth three-way port; and a first port of the second electromagnetic valve is connected with the heat exchanger, and a third port of the second electromagnetic valve is connected with the seventh pipeline through a fifth tee joint.

According to one embodiment of the present invention, the fourth pipeline is provided with a third solenoid valve and a fourth solenoid valve, a first port of the third solenoid valve is connected with the battery, a second port of the third solenoid valve is communicated with a second port of the fourth solenoid valve, and a third port of the third solenoid valve is connected with the eighth pipeline through a sixth three-way port; and a first port of the fourth electromagnetic valve is connected with the first radiator, and a third port of the fourth electromagnetic valve is connected with the eighth pipeline through a seventh three-way port.

According to an embodiment of the present invention, further comprising:

the air conditioner cooling circuit comprises a condenser and a compressor connected with the condenser, wherein the condenser is selectively connected to an evaporator or a heat exchanger, a first expansion valve is arranged between the condenser and the evaporator, a second expansion valve is arranged between the condenser and the heat exchanger, and the evaporator and the heat exchanger are respectively connected with the compressor;

a first fan, the first heat sink, the second heat sink and the condenser being disposed adjacent to one another, the first fan being adapted to dissipate heat from the first heat sink, the second heat sink and the condenser.

A vehicle according to an embodiment of a second aspect of the utility model includes:

the vehicle thermal management system according to the embodiment of the first aspect of the utility model.

According to the vehicle provided by the embodiment of the utility model, the electric drive heat management loop, the battery heat management loop and the air conditioning warm air loop are integrated, so that the waste heat of the motor is recycled, and an additional cooling system is not required to be added, so that the occupied space is small, the space utilization rate is improved, and the loading cost is reduced; in addition, because the first radiator is additionally arranged to cool the battery, when the ambient temperature is lower, the battery can be directly cooled through the first radiator without starting an air conditioning system of the vehicle, the energy consumption of the system is reduced, the energy utilization rate is improved, and the cruising ability of the vehicle is improved.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a vehicle thermal management system according to a first embodiment of the present invention;

fig. 2 is a schematic structural diagram of a vehicle thermal management system according to a second embodiment of the present invention.

Reference numerals:

11. a first water pump; 12. a heater; 13. a warm air core body;

21. a second water pump; 22. a battery; 23. a first heat sink; 24. a heat exchanger;

31. a second heat sink; 32. a third water pump; 33. an inverter; 34. a motor;

41. a first pipeline; 42. a second pipeline; 43. a third pipeline; 44. a fourth pipeline; 45. a fifth pipeline; 46. a sixth pipeline; 47. a seventh pipeline; 48. an eighth pipeline;

51. a proportional three-way valve; 52. a first solenoid valve; 53. a second solenoid valve; 54. a third electromagnetic valve; 55. a fourth solenoid valve;

61. a first three-way port; 62. a second three-way port; 63. a third three-way port; 64. a fourth three-way port; 65. a fifth three-way port; 66. a sixth three-way port; 67. a seventh three-way port; 68. a normally closed solenoid valve;

71. a condenser; 72. a compressor; 73. a first expansion valve; 74. a second expansion valve; 75. an evaporator;

81. a first fan; 82. a second fan; 83. a blower;

91. a first direction changing valve; 92. and a second direction changing valve.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

A thermal management system for a vehicle according to an embodiment of the first aspect of the utility model is described below with reference to the drawings.

As shown in fig. 1 and 2, a vehicle thermal management system according to an embodiment of the present invention includes: an air conditioning warm air loop, a battery thermal management loop and an electric drive thermal management loop.

The air-conditioning warm air loop comprises a first water pump 11, a heater 12 and a warm air core body 13 which are connected in sequence and is suitable for heating a passenger compartment.

The battery thermal management loop comprises a second water pump 21, a battery 22, a first radiator 23 and a heat exchanger 24, wherein the second water pump 21 is connected with the battery 22 and is suitable for regulating the temperature of the battery 22.

The electric drive thermal management circuit comprises a second radiator 31, a third water pump 32, an inverter 33 and a motor 34 which are connected in sequence and is suitable for regulating the temperature of the motor 34.

According to the vehicle thermal management system provided by the embodiment of the utility model, the electric drive thermal management loop, the battery thermal management loop and the air conditioning warm air loop are integrated together, so that the waste heat of the motor 34 is recycled, and an additional cooling system is not required to be arranged, so that the occupied space is small, the space utilization rate is improved, and the loading cost is reduced; in addition, because the first radiator 23 is additionally arranged to cool the battery 22, when the ambient temperature is low, the battery 22 can be directly cooled through the first radiator 23 without starting an air conditioning system of the vehicle, so that the energy consumption of the system is reduced, the energy utilization rate is improved, and the cruising ability of the vehicle is improved.

According to an embodiment of the utility model, in the air-conditioning warm air circuit, the heater 12 is connected with the warm air core 13 through the first pipeline 41, and the warm air core 13 is connected with the first water pump 11 through the second pipeline 42.

In the battery thermal management circuit, the first radiator 23 is connected to the heat exchanger 24, the heat exchanger 24 is connected to the second water pump 21 through the third pipe 43 so as to be able to be opened and closed, and the battery 22 is connected to the first radiator 23 through the fourth pipe 44 so as to be able to be opened and closed.

In the electrically driven thermal management circuit, the motor 34 is connected to the second radiator 31 through a fifth pipe 45 in an on-off manner, and the second radiator 31 is connected to the third water pump 32 through a sixth pipe 46.

The fifth line 45 is connected to the third line 43 and the first line 41 via a seventh line 47, and the sixth line 46 is connected to the fourth line 44 and the second line 42 via an eighth line 48.

In this way, the on-off connection among the electric drive heat management loop, the air conditioner warm air loop and the battery heat management loop can be realized, so that the waste heat of the motor 34 can be utilized to heat the battery 22 and heat the passenger compartment.

According to the embodiment of the present invention, the "connection in an openable manner" may be realized by adding valves such as an electromagnetic valve, a three-way valve, and a directional valve. The heater 12 may be a PTC heater or a fuel heater, and the heater 12 may be other heating devices.

According to the embodiment of the present invention, the connection structure of the first pipe 41 with the heater 12 and the heater core 13 may be a direct connection, for example, both ends of the first pipe 41 are connected with the heater 12 and the heater core 13, respectively; alternatively, the connection structure of the first pipe 41 and the heater 12 and the heater core 13 may be an indirect connection, for example, the first pipe 41 is indirectly connected to the heater 12 by being connected to a certain component, and the first pipe 41 is indirectly connected to the heater core 13 by being connected to a certain component. The second, third, fourth, fifth, sixth, seventh and eighth pipelines 42, 43, 44, 45, 46, 47 and 48 are similar to the first pipeline 41 and will not be described again.

As shown in fig. 1, in one embodiment of the present invention, both ends of the first pipeline 41 are directly connected to the warm air core 13 and the heater 12, respectively; two ends of the second pipeline 42 are respectively and directly connected with the warm air core body 13 and the first water pump 11; both ends of the third pipeline 43 are directly connected with the second water pump 21 and the heat exchanger 24 respectively; both ends of the fourth pipe 44 are directly connected to the battery 22 and the first radiator 23, respectively; both ends of the fifth pipeline 45 are directly connected with the motor 34 and the second radiator 31, respectively; both ends of the sixth pipeline 46 are directly connected with the third water pump 32 and the second radiator 31, respectively; both ends of the seventh pipeline 47 are directly connected to the first pipeline 41 and the fifth pipeline 45, respectively; the eighth line 48 is directly connected at both ends to the second line 42 and the sixth line 46, respectively.

According to some embodiments of the present invention, when the battery 22 needs to be cooled, the second water pump 21 and the first radiator 23 are turned on, and the battery 22 is cooled by the first radiator 23; when further cooling of the battery 22 is required, the air conditioning system of the vehicle is turned on, thereby cooling the battery 22 using the heat exchanger 24.

When the battery 22 needs to be heated, the fifth pipeline 45 is controlled to be communicated with the third pipeline 43, the sixth pipeline 46 is controlled to be communicated with the fourth pipeline 44, the second water pump 21 and the third water pump 32 are started, so that the cooling liquid can sequentially flow through the motor 34, the second water pump 21, the battery 22, the third water pump 32 and the inverter 33, and finally flows back to the motor 34 to enter the next circulation, and the battery 22 can be heated by using the waste heat generated by the motor 34.

When the battery 22 needs to be further heated, the fifth pipeline 45 is controlled to be disconnected from the third pipeline 43, the sixth pipeline 46 is controlled to be disconnected from the fourth pipeline 44, the third pipeline 43 is controlled to be communicated with the first pipeline 41, the fourth pipeline 44 is controlled to be communicated with the second pipeline 42, the heater 12, the first water pump 11 and the second water pump 21 are started, so that cooling liquid can sequentially flow through the heater 12, the second water pump 21, the battery 22 and the first water pump 11, and finally flows back to the heater 12 to enter the next circulation, so that the heater 12 can be used for rapidly heating the battery 22.

When the cab needs to be heated, the fifth pipeline 45 is controlled to be communicated with the first pipeline 41, the sixth pipeline 46 is controlled to be communicated with the second pipeline 42, the third pipeline 43 is controlled to be disconnected with the first pipeline 41, the fourth pipeline 44 is controlled to be disconnected with the second pipeline 42, the first water pump 11, the third water pump 32 and the warm air core 13 are opened, so that cooling liquid can sequentially flow through the third water pump 32, the inverter 33, the motor 34 and the warm air core 13, one part of the cooling liquid flowing out of the warm air core 13 circulates in the air-conditioning warm air loop under the action of the first water pump 11, the other part of the cooling liquid flowing out of the warm air core 13 flows back to the third water pump 32 through the eighth pipeline 48 to enter the next circulation, and further the cab can be heated by waste heat generated by the motor 34.

When the cab needs to be heated further, the fifth pipeline 45 is controlled to be communicated with the first pipeline 41, the sixth pipeline 46 is controlled to be communicated with the second pipeline 42, the third pipeline 43 is controlled to be disconnected with the first pipeline 41, the fourth pipeline 44 is controlled to be disconnected with the second pipeline 42, the first water pump 11, the third water pump 32, the warm air core 13 and the heater 12 are opened, so that the cooling liquid can sequentially flow through the third water pump 32, the inverter 33, the motor 34 and the warm air core 13, one part of the cooling liquid flowing out of the warm air core 13 flows through the heater 12 under the action of the first water pump 11 and is heated by the heater 12 and then flows back to the warm air core 13, the other part of the cooling liquid flowing out of the warm air core 13 flows back to the third water pump 32 through the eighth pipeline 48 to enter the next circulation, and further heating can be performed on the cab through waste heat generated by the heater 12 and the motor 34, so that the waste heat of the motor 34 can play a role of auxiliary heating.

When the cab needs to be heated further, the second pipeline 42 is controlled to be disconnected from the fourth pipeline 44 and the sixth pipeline 46 respectively, the first pipeline 41 is controlled to be disconnected from the third pipeline 43 and the fifth pipeline 45 respectively, and the first water pump 11, the heater 12 and the heater core 13 are turned on, so that the cab can be heated rapidly.

When the motor 34 needs to be cooled, the waste heat generated by the motor 34 can be guided to heat the cab, heat the battery 22 or assist in heating the cab, so as to achieve the effect of cooling the motor 34.

When the motor 34 needs to be further cooled, the waste heat generated by the motor 34 can be guided to heat the cab, heat the battery 22 or assist in heating the cab, and meanwhile, the motor 34 is controlled to be connected with the second radiator 31, and the second fan 82 is turned on, so that the cooling liquid can flow through the second radiator 31 in the circulation process, and the effect of further cooling the motor 34 is achieved.

When the motor 34 needs to be further cooled, the fifth pipeline 45 is controlled to be disconnected from the third pipeline 43 and the first pipeline 41, the sixth pipeline 46 is controlled to be disconnected from the fourth pipeline 44 and the second pipeline 42, the third water pump 32 and the second radiator 31 are turned on, and the motor 34 is cooled through the second radiator 31, so that the motor 34 is further cooled.

In summary, the connection or disconnection between different pipelines and different components can be controlled according to different thermal management requirements; when the waste heat of the motor 34 is used for heating the battery 22 or warming a cab, the motor 34 can be cooled, so that the energy utilization rate is improved, and the energy consumption of the system is reduced.

As shown in fig. 1 and 2, according to one embodiment of the present invention, the fifth pipe 45 is provided with a proportional three-way valve 51, a first port of the proportional three-way valve 51 is connected to the motor 34, a second port of the proportional three-way valve 51 is connected to the second radiator 31, and a third port of the proportional three-way valve 51 is connected to the seventh pipe 47. In this way, the on-off connection between the motor 34 and the second radiator 31 and the on-off connection between the fifth pipeline 45 and the seventh pipeline 47 can be realized by controlling the proportional three-way valve 51, and the structure is simple and convenient to control.

Since the two outlet ports of the proportional three-way valve 51 can be opened proportionally, the motor can be simultaneously communicated with the second radiator 31 and the seventh pipeline 47 through the proportional three-way valve 51, and the opening ratios of the two outlet ports of the proportional three-way valve 51 can be adjusted according to actual requirements, so as to control the flow rates of the cooling liquid flowing to the second radiator 31 and the seventh pipeline 47 respectively.

As shown in fig. 1 and 2, according to one embodiment of the present invention, the second line 42 is provided with a first three-way port 61, the first three-way port 61 communicating with a first port of the eighth line 48, the sixth line 46 is provided with a second three-way port 62, and the second three-way port 62 communicating with a second port of the eighth line 48. Therefore, the connection or disconnection between the second pipeline 42 and the eighth pipeline 48 can be controlled by controlling the first three-way port 61, and the connection or disconnection between the sixth pipeline 46 and the eighth pipeline 48 can be controlled by controlling the second three-way port 62, so that the structure is simple and convenient to control. It will be appreciated that the first three-way port 61 and the second three-way port 62 each have three ports that communicate with each other.

As shown in fig. 1 and 2, according to one embodiment of the present invention, the seventh line 47 is connected to the first line 41 through a normally closed solenoid valve 68. In this way, the normally closed solenoid valve 68 is in a normally closed state in a non-energized state, so that different thermal management circuits are prevented from interfering with each other in respective independent working processes; the normally closed electromagnetic valve 68 is in an open state in an energized state, so that the seventh line 47 communicates with the first line 41.

As shown in fig. 1 and 2, further, the first pipe 41 is provided with a third three-way port 63, and a normally closed solenoid valve 68 is connected to the third three-way port 63. It will be appreciated that the third three-way port 63 has three intercommunicating ports.

As shown in fig. 2, according to one embodiment of the present invention, the third pipeline 43 is provided with a first solenoid valve 52 and a second solenoid valve 53, a first port of the first solenoid valve 52 is connected with the second water pump 21, a second port thereof is communicated with a second port of the second solenoid valve 53, and a third port thereof is connected with the seventh pipeline 47 through a fourth three-way port 64; the second solenoid valve 53 has a first port connected to the heat exchanger 24 and a third port connected to the seventh line 47 through a fifth three-way port 65.

The first solenoid valve 52 and the second solenoid valve 53 may be three-way solenoid valves, the first port of the first solenoid valve 52 is communicated with the second port when the first solenoid valve 52 is not energized, and the first port of the first solenoid valve 52 is communicated with the third port when the first solenoid valve 52 is energized; when the second solenoid valve 53 is not energized, the first port communicates with the second port, and when the second solenoid valve 53 is energized, the first port communicates with the third port.

As shown in fig. 1, according to another embodiment of the present invention, the first solenoid valve 52, the second solenoid valve 53, the fourth three-way port 64, and the fifth three-way port 65 described above may be replaced with a first direction valve 91 having four ports. Four ports of the first direction valve 91 are respectively connected with the second water pump 21, the fifth pipeline 45, the heat exchanger 24 and the first pipeline 41, wherein the first port is connected with the second water pump 21, the second port is connected with the fifth pipeline 45, the third port is connected with the heat exchanger 24, and the fourth port is connected with the first pipeline 41. Thus, the structure is simpler. It will be appreciated that the fourth three-way port 64 and the fifth three-way port 65 each have three ports that communicate with each other.

As shown in fig. 2, according to one embodiment of the present invention, the fourth line 44 is provided with a third solenoid valve 54 and a fourth solenoid valve 55, a first port of the third solenoid valve 54 is connected to the battery 22, a second port thereof is communicated with a second port of the fourth solenoid valve 55, and a third port thereof is connected to the eighth line 48 through a sixth three-way port 66; the fourth solenoid valve 55 has a first port connected to the first radiator 23, and a third port connected to the eighth line 48 through a seventh three-way port 67.

The third solenoid valve 54 and the fourth solenoid valve 55 may be three-way solenoid valves, a first port of the third solenoid valve 54 is communicated with a second port when the third solenoid valve is not energized, and the first port of the third solenoid valve 54 is communicated with a third port when the third solenoid valve is energized; when the fourth solenoid valve 55 is not energized, the first port communicates with the second port, and when the fourth solenoid valve 55 is energized, the first port communicates with the third port.

As shown in fig. 1, according to another embodiment of the present invention, the third solenoid valve 54, the fourth solenoid valve 55, the sixth three-way port 66 and the seventh three-way port 67 may be replaced with a second direction valve 92 having four ports. The four ports of the second direction valve 92 are connected to the battery 22, the sixth pipeline 46, the first radiator 23, and the second pipeline 42, respectively, wherein the first port is connected to the battery 22, the second port is connected to the sixth pipeline 46, the third port is connected to the first radiator 23, and the fourth port is connected to the second pipeline 42. The structure is simpler. It will be appreciated that the sixth three-way port 66 and the seventh three-way port 67 each have three intercommunicating ports.

As shown in fig. 1 and 2, according to an embodiment of the present invention, further includes:

an air conditioner cooling circuit comprises a condenser 71 and a compressor 72 connected with the condenser 71, wherein the condenser 71 is selectively connected with an evaporator 75 or a heat exchanger 24, a first expansion valve 73 is arranged between the condenser 71 and the evaporator 75, a second expansion valve 74 is arranged between the condenser 71 and the heat exchanger 24, and the evaporator 75 and the heat exchanger 24 are respectively connected with the compressor 72.

The warm air core 13 and the evaporator 75 are arranged adjacent to each other, the blower 83 is arranged outside the warm air core 13, and the evaporator 75 and the warm air core 13 share one blower 83. A first fan 81 is provided outside the condenser 71.

When the cab needs to be cooled, the compressor 72, the first fan 81, and the first expansion valve 73 are turned on, the blower 83 is turned on, and the temperature of the cab is reduced by the evaporator 75; when the battery 22 needs to be rapidly cooled, the compressor 72, the first fan 81 and the second expansion valve 74 are opened, the second water pump 21 is opened, the third pipeline 43 is controlled to be disconnected from the fifth pipeline 45 and the first pipeline 41, the fourth pipeline 44 is controlled to be disconnected from the sixth pipeline 46 and the second pipeline 42, the cooling liquid is cooled by heat exchange with the refrigerant through the heat exchanger 24, and then the battery 22 is rapidly cooled.

According to an embodiment of the present invention, further comprising: the first fan 81, the first radiator 23, the second radiator 31 and the condenser 71 are disposed adjacent to each other, and the first fan 81 is adapted to radiate heat from the first radiator 23, the second radiator 31 and the condenser 71. Thus, by integrating the first radiator 23, the second radiator 31 and the condenser 71, the installation space can be saved, the space utilization rate can be improved, and more fans do not need to be installed, thereby greatly saving the cost.

A vehicle according to an embodiment of the second aspect of the utility model is described below with reference to the drawings.

As shown in fig. 1 and 2, a vehicle according to an embodiment of the present invention includes:

a vehicle thermal management system according to an embodiment of the first aspect of the utility model.

According to the vehicle provided by the embodiment of the utility model, the electric drive heat management loop, the battery heat management loop and the air conditioning warm air loop are integrated together, so that the waste heat of the motor 34 is recycled, an additional cooling system is not required to be arranged, the occupied space is small, the space utilization rate is improved, and the loading cost is also reduced; in addition, because the first radiator 23 is additionally arranged to cool the battery 22, when the ambient temperature is low, the battery 22 can be directly cooled through the first radiator 23 without starting an air conditioning system of the vehicle, so that the energy consumption of the system is reduced, the energy utilization rate is improved, and the cruising ability of the vehicle is improved.

Some specific embodiments of a vehicle thermal management system according to the present invention are described below with reference to fig. 1 and 2.

Example one

As shown in fig. 1, according to the vehicle thermal management system according to the first embodiment of the present invention, the first direction valve 91 is used to enable the on-off connection of the third pipeline 43 itself and the on-off connection of the third pipeline 43 with the first pipeline 41 and the fifth pipeline 45, respectively, and the second direction valve 92 is used to enable the on-off connection of the fourth pipeline 44 itself and the on-off connection of the fourth pipeline 44 with the second pipeline 42 and the sixth pipeline 46, respectively.

The heater 12 is a PTC heater 12, the first fan 81 and the second fan 82 are electronic fans, the first water pump 11, the second water pump 21, and the third water pump 32 are electronic water pumps, and the first expansion valve 73 and the second expansion valve 74 are electronic expansion valves.

The following describes a specific operation process of a vehicle thermal management system according to a first embodiment of the utility model with reference to fig. 1.

The cooling process for the battery 22 is as follows:

when the temperature of the battery 22 exceeds the preset temperature TB1 and the ambient temperature is lower than T0, the first port and the third port of the first direction valve 91 are controlled to communicate with each other, the first port and the third port of the second direction valve 92 are controlled to communicate with each other, the second water pump 21 and the second fan 82 are turned on, and the first radiator 23 is used to air-cool the coolant flowing through the battery 22.

When the ambient temperature is higher than T0 or the temperature of the battery 22 is higher than a preset temperature TB2, the compressor 72, the first fan 81, and the second expansion valve 74 are turned on, the first port and the third port of the first reversing valve 91 are controlled to be communicated, the first port and the third port of the second reversing valve 92 are controlled to be communicated, the second water pump 21 is turned on, and the cooling liquid exchanges heat with the refrigerant through the heat exchanger 24 to be cooled, so that the temperature of the battery 22 is rapidly reduced.

The heating process of the battery 22 is as follows:

when the temperature of the battery 22 is lower than the preset temperature TB3 and the temperature of the coolant in the electric drive thermal management loop is higher than the preset temperature TM1, the first port and the second port of the first reversing valve 91 are controlled to be communicated, the first port and the second port of the second reversing valve 92 are controlled to be communicated, the first port and the third port of the proportional three-way valve 51 are controlled to be communicated, the second water pump 21 and the third water pump 32 are opened, so that the coolant can sequentially flow through the motor 34, the second water pump 21, the battery 22, the third water pump 32 and the inverter 33, and finally the coolant flows back to the motor 34 to enter the next circulation, and the residual heat generated by the motor 34 can be used for heating the battery 22.

When the temperature of the battery 22 is lower than the preset temperature TB4, the first port and the fourth port of the first direction valve 91 are controlled to communicate with each other, the first port and the fourth port of the second direction valve 92 are controlled to communicate with each other, the normally closed solenoid valve 68 is controlled to open, and the first water pump 11 and the second water pump 21 are opened, so that the coolant can sequentially flow through the PTC heater 12, the second water pump 21, the battery 22 and the first water pump 11, and finally flow back to the PTC heater 12 to enter the next circulation, so that the battery 22 can be rapidly heated by the PTC heater 12.

The cooling process of the cab is as follows:

when the air-conditioning cooling of the cab is turned on, the compressor 72, the first fan 81, and the first expansion valve 73 are turned on, the blower 83 is turned on, and the temperature of the cab is lowered by the evaporator 75.

The heating process of the cab is as follows:

when the air-conditioning heating low gear of the cab is opened, if the temperature of the coolant of the electric drive heat management loop exceeds TM1 and the battery 22 has no heating demand, the normally closed electromagnetic valve 68 is controlled to be opened, the first port and the third port of the proportional three-way valve 51 are controlled to be communicated, the second port and the fourth port of the first reversing valve 91 are controlled to be communicated, the second port and the fourth port of the second reversing valve 92 are controlled to be communicated, the first water pump 11, the third water pump 32 and the blower 83 are opened, so that the coolant can sequentially flow through the third water pump 32, the inverter 33, the motor 34 and the warm air core body 13, a part of the coolant flowing out of the warm air core body 13 circulates in the air-conditioning warm air loop under the action of the first water pump 11, the other part of the coolant flowing out of the warm air core body 13 flows back to the third water pump 32 through the eighth pipeline 48 to enter the next circulation, and further the residual heat generated by the motor 34 can be utilized, the cab is warmed by the warm air core 13.

When the air-conditioning heating middle gear of the cab is opened, the normally closed electromagnetic valve 68 is controlled to be opened, the second port and the fourth port of the first reversing valve 91 are controlled to be communicated, the second port and the fourth port of the second reversing valve 92 are controlled to be communicated, the first port and the third port of the proportional three-way valve 51 are controlled to be communicated, the first water pump 11, the third water pump 32, the warm air core 13 and the PTC heater 12 are opened, so that the cooling liquid can sequentially flow through the third water pump 32, the inverter 33, the motor 34 and the warm air core 13, a part of the cooling liquid flowing out of the warm air core 13 flows through the PTC heater 12 under the action of the first water pump 11 and is heated by the PTC heater 12, and then flows back to the warm air core 13, another part of the cooling liquid flowing out of the warm air core 13 flows back to the third water pump 32 through the eighth pipeline 48 to enter the next circulation, and further heats the cab through the residual heat generated by the PTC heater 12 and the motor 34, so that the waste heat of the motor 34 can play a role of auxiliary heating.

When the air-conditioning heating high-grade of the cab is opened, the normally closed electromagnetic valve 68 is controlled to be closed, the PTC heater 12, the first water pump 11 and the blower 83 are opened, and the cab is rapidly heated through the warm air core 13.

The motor 34 and the electronically controlled cooling process are as follows:

when the temperature of the coolant in the electric drive thermal management loop is higher than TM1, and the vehicle thermal management system meets the above conditions in the process of heating the cab or the above conditions in the process of heating the battery 22, the vehicle thermal management system is executed according to the above conditions, respectively.

When the temperature of the coolant in the electric drive heat management loop is higher than TM2, and the vehicle heat management system meets the condition of the cab during heating or the condition of the battery 22 during heating, the vehicle heat management system controls the first port of the proportional three-way valve 51 to be simultaneously communicated with the second port and the third port on the basis of the condition, opens the second fan 82, and controls the temperature of the coolant in the electric drive heat management loop to be lower than TM3 by adjusting the ratio of the flow rates respectively passing through the second port and the third port of the proportional three-way valve 51.

When the vehicle thermal management system does not meet the conditions in the heating process of the cab and the heating process of the battery 22, the first port and the second port of the proportional three-way valve 51 are controlled to be communicated, the third water pump 32 and the second fan 82 are turned on, and the temperature is rapidly reduced through the second radiator 31.

When the temperature of the coolant in the electrically-driven thermal management circuit is higher than TM3, the first port and the second port of the proportional three-way valve 51 are controlled to communicate, the third water pump 32 and the second fan 82 are turned on, and the temperature is rapidly reduced through the second radiator 31.

It can be understood that, for the preset temperatures TB1, TB2, TB3 and TB4, the order of magnitude thereof is: TB3< TB4< TB1< TB 2; for the coolant temperatures TM1, TM2, and TM3 of the electrically driven thermal management circuit, the order of magnitude is: TM1< TM2< TM 3.

Example two

As shown in fig. 2, according to the vehicle thermal management system of the second embodiment of the present invention, the first solenoid valve 52, the second solenoid valve 53, the fourth three-way port 64, and the fifth three-way port 65 are used to replace the first direction valve 91 of the first embodiment, and the third solenoid valve 54, the fourth solenoid valve 55, the sixth three-way port 66, and the seventh three-way port 67 are used to replace the second direction valve 92 of the first embodiment.

The specific working process of the vehicle thermal management system according to the second embodiment of the utility model is similar to that of the first embodiment, and is not described herein again.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. A vehicle thermal management system, comprising:

the air-conditioning warm air loop comprises a first water pump, a heater and a warm air core body which are sequentially connected, and is suitable for heating the passenger compartment;

the battery thermal management loop comprises a second water pump, a battery, a first radiator and a heat exchanger and is suitable for adjusting the temperature of the battery;

the electric drive heat management loop comprises a second radiator, a third water pump, an inverter and a motor which are sequentially connected, and is suitable for adjusting the temperature of the motor;

the air conditioner warm air loop is connected with the battery thermal management loop and the electric drive thermal management loop in an on-off mode, and the battery thermal management loop is connected with the electric drive thermal management loop in an on-off mode.

2. The vehicle thermal management system of claim 1,

in the air-conditioning warm air loop, the heater is connected with the warm air core body through a first pipeline, and the warm air core body is connected with the first water pump through a second pipeline;

in the battery thermal management loop, the second water pump is connected with the battery, the first radiator is connected with the heat exchanger, the heat exchanger is connected with the second water pump in a switching mode through a third pipeline, and the battery is connected with the first radiator in a switching mode through a fourth pipeline;

in the electric drive heat management loop, the motor is connected with the second radiator in a break-make mode through a fifth pipeline, and the second radiator is connected with the third water pump through a sixth pipeline;

the fifth pipeline is respectively connected with the third pipeline and the first pipeline in a break-make manner through a seventh pipeline, and the sixth pipeline is respectively connected with the fourth pipeline and the second pipeline in a break-make manner through an eighth pipeline.

3. The vehicle thermal management system of claim 2, wherein the fifth line is provided with a proportional three-way valve, a first port of the proportional three-way valve is connected to the motor, a second port of the proportional three-way valve is connected to the second radiator, and a third port of the proportional three-way valve is connected to the seventh line.

4. The vehicle thermal management system of claim 2, wherein the second tube is provided with a first three-way port in communication with a first end of the eighth tube, and the sixth tube is provided with a second three-way port in communication with a second end of the eighth tube.

5. The vehicle thermal management system of claim 2, wherein the seventh line is connected to the first line by a normally closed solenoid valve.

6. The vehicle thermal management system of claim 5, wherein the first conduit is provided with a third three-way port, and the normally closed solenoid valve is connected to the third three-way port.

7. The vehicle thermal management system according to claim 2, wherein the third pipeline is provided with a first solenoid valve and a second solenoid valve, a first port of the first solenoid valve is connected with the second water pump, a second port of the first solenoid valve is communicated with a second port of the second solenoid valve, and a third port of the first solenoid valve is connected with the seventh pipeline through a fourth three-way port; and a first port of the second electromagnetic valve is connected with the heat exchanger, and a third port of the second electromagnetic valve is connected with the seventh pipeline through a fifth tee joint.

8. The vehicle thermal management system according to claim 2, wherein the fourth pipeline is provided with a third solenoid valve and a fourth solenoid valve, a first port of the third solenoid valve is connected with the battery, a second port of the third solenoid valve is communicated with a second port of the fourth solenoid valve, and a third port of the third solenoid valve is connected with the eighth pipeline through a sixth three-way port; and a first port of the fourth electromagnetic valve is connected with the first radiator, and a third port of the fourth electromagnetic valve is connected with the eighth pipeline through a seventh three-way port.

9. The vehicle thermal management system of any of claims 1-8, further comprising:

the air conditioner cooling circuit comprises a condenser and a compressor connected with the condenser, wherein the condenser is selectively connected to an evaporator or a heat exchanger, a first expansion valve is arranged between the condenser and the evaporator, a second expansion valve is arranged between the condenser and the heat exchanger, and the evaporator and the heat exchanger are respectively connected with the compressor;

a first fan, the first heat sink, the second heat sink and the condenser being disposed adjacent to one another, the first fan being adapted to dissipate heat from the first heat sink, the second heat sink and the condenser.

10. A vehicle, characterized by comprising:

the vehicle thermal management system of any of claims 1-9.

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