CN218367312U

CN218367312U - Thermal management system of vehicle and vehicle

Info

Publication number: CN218367312U
Application number: CN202221420884.2U
Authority: CN
Inventors: 向东
Original assignee: Guangzhou Automobile Group Co Ltd
Current assignee: Guangzhou Automobile Group Co Ltd
Priority date: 2022-06-07
Filing date: 2022-06-07
Publication date: 2023-01-24
Anticipated expiration: 2032-06-07

Abstract

The utility model discloses a thermal management system and vehicle of vehicle. The thermal management system of the vehicle includes: a heat generation system that generates heat energy; the refrigerating device is used for refrigerating the device to be cooled through a refrigerant; a first proportional three-way valve for selectively transferring thermal energy generated by the heat generating system to a heat exchanger; and the heat exchanger is selectively connected with the first proportional three-way valve and used for transferring heat energy to the refrigerant to heat the refrigerant when the first proportional three-way valve is communicated with the heat generating system so as to ensure the normal work of the refrigerant. Can treat through this scheme that cooling device carries out effectual cooling in the vehicle is in microthermal environment, guarantee to treat cooling device's safety, life-span and the drivability of vehicle.

Description

Thermal management system of vehicle and vehicle

Technical Field

The present invention relates to a thermal management technology of a vehicle, and more particularly, to a thermal management system of a vehicle and a vehicle.

Background

At present, in a low-temperature environment, in a fast charge and discharge process (such as rapid acceleration, rapid deceleration and the like) of Plug-in Hybrid Electric vehicles (PHEVs) and Hybrid Electric Vehicles (HEVs) of a Vehicle type in a pure Electric mode and a Hybrid Electric mode, a power battery also rapidly heats up, and if the power battery cannot be effectively cooled, thermal runaway of the power battery is caused, so that the safety, the service life, the driving performance of the whole Vehicle and the like of the power battery are affected. How to ensure the normal cooling operation of the power battery of the vehicle under the low-temperature environment becomes a problem to be solved urgently at present.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, the embodiments of the present invention provide a thermal management system for a vehicle and a vehicle, so as to improve the above problems.

According to an aspect of the embodiment of the present invention, there is provided a thermal management system of a vehicle, the thermal management system of the vehicle including: a heat generation system that generates heat energy; the refrigerating device is used for refrigerating the device to be cooled through a refrigerant; a first proportional three-way valve for selectively transferring thermal energy generated by the heat generating system to a heat exchanger; and the heat exchanger is selectively connected with the first proportional three-way valve and used for transferring heat energy to the refrigerant to heat the refrigerant when the first proportional three-way valve is communicated with the heat generating system so as to ensure the normal work of the refrigerant.

Optionally, the first energy exchanging device comprises a heat sink for dissipating heat energy generated by the heat generating system when the first three-way proportional valve does not transfer the heat energy generated by the heat generating system to the heat exchanger.

Optionally, the heat dissipation device further includes a second proportional three-way valve, a driving device, and a heat sink, and the second proportional three-way valve is connected to the first proportional three-way valve, the driving device, and the heat sink respectively.

Optionally, the thermal management system of the vehicle further includes a temperature sensor, where the temperature sensor is respectively connected to the output end of the heat generating system and the first interface of the first proportional three-way valve, and is configured to adjust the opening degrees of the first proportional three-way valve and the first proportional three-way valve according to the heat energy generated by the heat generating system.

Optionally, the refrigeration device includes a compressor and a condenser, an input end of the compressor is connected to the heat exchanger, an output end of the compressor is connected to an input end of the condenser, and an output end of the condenser is connected to the device to be cooled.

Optionally, the device to be cooled includes a first air-conditioning cooling module, the first air-conditioning cooling module includes a first electronic expansion valve, a first air-conditioning evaporator and a first pressure-temperature integrated sensor, an input end of the first electronic expansion valve is connected with an output end of the condenser, an output end of the first electronic expansion valve is connected with an input end of the first air-conditioning evaporator, an output end of the first air-conditioning evaporator is connected with an input end of the first pressure-temperature integrated sensor, and an output end of the first pressure-temperature integrated sensor is connected with the heat exchanger.

Optionally, the device to be cooled includes a second air-conditioning cooling module, the second air-conditioning cooling module includes a thermostatic expansion valve and a second air-conditioning evaporator, an input end of the thermostatic expansion valve is connected with an output end of the condenser, an output end of the thermostatic expansion valve is connected with an input end of the second air-conditioning evaporator, and an output end of the second air-conditioning evaporator is connected with the heat exchanger.

Optionally, the device to be cooled includes a power battery cooling module, the power battery cooling module includes a second electronic expansion valve, a power battery cold plate and a second pressure and temperature integrated sensor, an input end of the second electronic expansion valve is connected with an output end of the condenser, an output end of the second electronic expansion valve is connected with an input end of the power battery cold plate, an output end of the power battery cold plate is connected with an input end of the second pressure and temperature integrated sensor, and an output end of the second pressure and temperature integrated sensor is connected with the heat exchanger.

Optionally, the power battery cooling module further comprises a throttle valve, an input end of the throttle valve is connected with an output end of the second sensor, and an output end of the throttle valve is connected with the heat exchanger.

According to an aspect of the embodiments of the present invention, there is provided a vehicle including the thermal management system of the vehicle as defined in any one of the above, the thermal management system of the vehicle being disposed in the vehicle body main body.

To sum up, the utility model discloses following beneficial effect has: the utility model provides an among the thermal management system of vehicle, couple together heat production system and refrigerating plant through the heat exchanger, with this with the produced heat energy transmission of heat production system to refrigerating plant in, with the refrigerant to among the refrigerating plant heats, guarantee the normal work of refrigerant, and then make refrigerating plant still can normal operating in that the vehicle is in microthermal environment, with this cooling work who has guaranteed that refrigerating plant treats cooling device can normally go on, with this can treat cooling device and carry out effectual cooling, guarantee the safety of vehicle, long service life and whole car drivability.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

Fig. 1 shows a block diagram of a thermal management system of a vehicle according to an embodiment of the present invention.

Fig. 2 shows a block diagram of a thermal management system of a vehicle according to another embodiment of the present invention.

Fig. 3 shows a block diagram of a heat dissipation device of a thermal management system of a vehicle according to an embodiment of the present invention.

Fig. 4 shows a block diagram of a thermal management system of a vehicle according to another embodiment of the present invention.

Fig. 5 shows a block diagram of a cooling device of a thermal management system of a vehicle according to an embodiment of the present invention.

Fig. 6 shows a block diagram of a first air conditioner cooling module of a device to be cooled according to an embodiment of the present invention.

Fig. 7 shows a block diagram of a second air conditioner cooling module of a device to be cooled according to an embodiment of the present invention.

Fig. 8 shows a block diagram of a power battery cooling module of a device to be cooled according to an embodiment of the present invention.

Fig. 9 shows a block diagram of a power battery cooling module of a device to be cooled according to another embodiment of the present invention.

Fig. 10 shows a block diagram of a device to be cooled of a thermal management system of a vehicle according to another embodiment of the present invention.

Fig. 11 shows a block diagram of a thermal management system for a vehicle according to still another embodiment of the present invention.

Fig. 12 shows a block diagram of a thermal management system for a vehicle according to yet another embodiment of the present invention.

Fig. 13 shows a schematic diagram of a vehicle according to an embodiment of the present invention.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that the invention may be practiced without one or more of the specific details, or with other methods, components, devices, steps, and so forth. In other instances, well-known methods, devices, implementations, or operations have not been shown or described in detail to avoid obscuring aspects of the invention.

The cooling of the power battery of the vehicle is divided into three schemes of air cooling, cooling liquid medium cooling and cooling medium cooling. At present, liquid medium cooling schemes are mainly used. The air cooling is difficult to correspond to the power battery with higher and higher power; in addition, the cooling of the cooling liquid medium is realized by cooling the liquid medium by using an air conditioner refrigerant and then cooling the power battery by using a power battery cold plate, and the defects of heavy system weight, complex pipeline system, low heat exchange efficiency and the like exist; and the cooling medium cooling scheme has low cost and high cooling efficiency.

At present, in hybrid electric vehicles (PHEV and HEV) adopting a mode of directly cooling a power battery by R134a and R1234yf refrigerants, when the refrigerants are determined to cool the power battery and/or an air conditioner at low ambient temperature (particularly in an extremely low temperature environment of minus 20 ℃ and below), the boiling point characteristics of the refrigerants (under the absolute pressure of 1bar, the boiling point of R134a is minus 26.36 ℃, and the boiling point of R1234yf is minus 29.78 ℃), the content of gaseous refrigerants is small, so that the suction pressure of a compressor is very low, a thermal management system of the vehicle cannot effectively establish differential pressure, and the power battery and/or the air conditioner cannot be effectively cooled.

Therefore, in order to overcome the above defect, the utility model provides a thermal management system and vehicle of vehicle heats the refrigerant through first proportion three-way valve with the heat energy that heat production system produced through the heat exchanger, guarantees that the refrigerant normally works to this makes refrigerating plant can treat cooling device through the refrigerant and refrigerates, thereby makes and treats that cooling device still can normal operating in the vehicle is in microthermal environment.

Referring to fig. 1, fig. 1 shows a block diagram of a thermal management system of a vehicle according to an embodiment of the present application. As shown in fig. 1, the thermal management system 100 of the vehicle includes: heat-generating system 110, first proportional three-way valve 120, heat exchanger 130, refrigeration unit 140.

A heat generating system 110 for generating thermal energy; a first proportional three-way valve 120 for selectively transferring thermal energy generated by the heat generating system to a heat exchanger; the heat exchanger 130 is selectively connected with the first proportional three-way valve and used for transferring heat energy to the refrigerant to heat the refrigerant when the first proportional three-way valve is communicated with the heat generating system so as to ensure that the refrigerant works normally, and the refrigerating device 131 is used for refrigerating a device to be cooled through the refrigerant.

As shown in fig. 1, optionally, the thermal management system of the vehicle further includes a device to be cooled 150.

As shown in fig. 1, heat-generating system 110 is connected to first connection a of first proportional three-way valve 120, third connection C of first proportional three-way valve 120 is connected to the input of heat exchanger 130, the output of heat exchanger 130 is connected to the input of cooling device 140, and the output of cooling device 140 is connected to device to be cooled 150.

The heat exchanger is a device which can realize heat transfer between materials between two or more than two fluids with different temperatures and can transfer heat from the side with higher temperature to the side with lower temperature.

In some embodiments, as shown in fig. 2, the thermal management system 100 of the vehicle further includes a heat sink 160, and the heat sink 160 is connected to the first proportional three-way valve 120 and is used for dissipating heat energy generated by the heat generating system 110 when the first proportional three-way valve 120 does not transfer the heat energy generated by the heat generating system 110 to the heat exchanger 130.

Optionally, the heat dissipation device 160 is connected to the second interface B of the first proportional three-way valve 120, and when the first proportional three-way valve 120 does not transfer the heat energy generated by the heat generating system 110 to the heat exchanger 130, that is, when the third interface C of the first proportional three-way valve 120 is not connected to the heat exchanger 130, the heat energy generated by the heat generating system 110 is dissipated, so as to ensure normal operation of the vehicle.

The heat generating system 110 refers to a core component of a new energy automobile including a driving motor, a transmission, a power converter, and a controller (IPU). Optionally, the driving motor is the core of the electric driving system, and the performance and efficiency of the driving motor directly affect the performance of the electric vehicle; the transmission is a transmission device that coordinates the rotational speed of the engine and the actual running speed of the wheels; the power converter is used for regulating current and voltage of the driving motor, and optionally, the power converter can be a DC/DC (direct current/direct current) converter, and in other embodiments, the power converter can be a DC/AC (direct current/alternating current) converter; the controller is used for controlling the current and the voltage of the driving motor, so that the driving motor works according to the required direction, rotating speed, torque and response time to ensure the safety and the reliability of the running of the automobile. Optionally, the long heat system may also be another heat-generating component, so as to ensure that the refrigerant can be heated, ensure normal operation of the refrigerant, and further ensure normal operation of the vehicle.

In some embodiments, as shown in fig. 3, the heat sink 160 includes a second proportional three-way valve 161, a driving device 162, and a radiator 163, wherein the second proportional three-way valve 161 is connected with the first proportional three-way valve 120, the driving device 162, and the radiator 163, respectively; optionally, a first port X of the second proportional three-way valve 161 is connected to a second port B of the first proportional three-way valve 120, a second port Y of the second proportional three-way valve 161 is connected to an input of the driving device 162, a third port Z of the second proportional three-way valve 161 is connected to an input of the radiator 163, an output of the radiator 163 is connected to an input of the driving device 162, and an output of the driving device 162 is connected to the heat generating system 110.

In some embodiments, the driving device 162 may be an electronic water pump, and the electronic water pump may drive the cooling medium to flow into the heat generating system by using a negative pressure (vacuum) formed when the electronic water pump operates, and sucking the cooling medium with a pressure lower than that of an input end of the electronic water pump under the action of atmospheric pressure, and then discharging the cooling medium from an output end of the electronic water pump, where the cooling medium may be cooling liquid, or tap water, and may be specifically defined according to actual needs, and is not specifically limited herein.

The heat generating system 110 may generate a large amount of heat energy during the driving process of the vehicle, and if the heat energy generated by the heat generating system 110 is not timely subjected to heat dissipation treatment, the heat generating system 110 may be overheated, thereby affecting the operating efficiency of the vehicle, and in a serious case, the safety of the vehicle may be threatened, so as to ensure the operating efficiency and safety of the vehicle, the driving device 162 drives the cooling medium to flow into the heat generating system 110, the cooling medium absorbs the heat energy generated by the heat generating system 110, thereby achieving the cooling of the heat generating system 110, the temperature of the cooling medium after absorbing the heat energy is increased, the cooling medium after increasing the temperature flows into the first three-way valve 120 through the first interface a of the first three-way valve 120, when the first three-way valve 120 selects to transfer the heat energy to the heat exchanger 130, the heat energy flows into the heat exchanger 120 through the third interface C of the first three-way valve 120, the heat of the cooling medium is transferred to the refrigerating device 140 through the heat exchanger 130, at this time, the temperature of the cooling medium is decreased, and finally flows into the driving device 162 through the heat exchanger 130, thereby being circulated. When the first proportional three-way valve 120 does not transmit the thermal energy to the heat exchanger 130, the second port B of the first proportional three-way valve 120 communicates with the second port Y of the second proportional three-way valve 162, the cooling medium carrying the thermal energy flows in from the first port a of the first proportional three-way valve 120, flows out from the second port B to the first port X of the second proportional three-way valve 162, flows out from the third port Z of the second proportional three-way valve 162 to the input end of the radiator 163, is radiated by the radiator 163, and is lowered in temperature after being radiated by the radiator 163, and flows out from the output end of the radiator 163 to the cooling drive device, thereby circulating.

In this embodiment, if it is not necessary to heat the refrigerant by using the heat energy generated by the heat generating system 110, the cooling medium absorbing the heat flows out from the second port B of the first proportional three-way valve 120, flows into the first port X of the second proportional three-way valve 161, flows into the radiator 163 from the third port Z of the second proportional three-way valve 161 to be cooled by heat radiation, and is input to the driving device 162.

In other embodiments, as shown in fig. 4, the thermal management system 100 of the vehicle further includes a temperature sensor 170, where the temperature sensor 170 is respectively connected to the heat-generating system 110 and the first proportional three-way valve 120, and is configured to adjust an opening degree of the first proportional three-way valve 120 according to the heat energy generated by the heat-generating system 110; the temperature sensor 170 is respectively connected to the output end of the heat generating system 110 and the first connection a of the first proportional three-way valve 120, and is configured to adjust the opening degrees of the second connection B of the first proportional three-way valve 120 and the third connection C of the first proportional three-way valve 120 according to the heat energy generated by the heat generating system 110.

In this embodiment, the temperature sensor 170 is configured to detect heat energy generated by the heat generating system 110, adjust the opening degrees of the second interface B of the first proportional three-way valve 120 and the third interface C of the first proportional three-way valve 120 according to the heat energy required by the refrigerant, transmit the heat energy to the heat exchanger, and transmit the heat energy to the refrigerant by the heat exchanger 120 to heat the refrigerant, so as to ensure that the refrigerant works normally; and transfers the remaining heat energy to the first port X of the second proportional three-way valve 162 through the third port C of the first proportional three-way valve 120; at this time, since the temperature of the cooling medium is high, it is necessary to input the cooling medium with a high temperature into the radiator 163 through the third port Z of the second proportional three-way valve 162, cool the cooling medium by the radiator 163, and return the cooling medium after the final temperature reduction to the driving device 162; after the heat is transferred to the refrigerant at the first proportional three-way valve 120, the temperature of the cooling medium is lowered, and the cooling medium having been cooled is input to the first port X of the second proportional three-way valve 162 through the heat exchanger 120, at this time, the cooling medium is already cooled, and it is not necessary to cool the cooling medium by heat radiation from the radiator 163, so the cooling medium having been cooled is input to the driving device 162 through the second port Y of the second proportional three-way valve 161, and is circulated.

In some embodiments, as shown in fig. 5, the refrigeration device 140 includes a compressor 141 and a condenser 142, an input of the compressor 141 is connected to the heat exchanger 120, an output of the compressor 141 is connected to an input of the condenser 142, and an output of the condenser 142 is connected to the device to be cooled 150.

In some embodiments, the device 150 to be cooled is directly cooled by the refrigerant, and in other embodiments, the device to be cooled may be cooled by natural cooling, air cooling, liquid cooling, or the like.

In some embodiments, when the external temperature is lower than the temperature threshold, the gas content in the gas-liquid mixture ratio of the refrigerant medium is low, and at this time, the suction pressure of the compressor 141 is low, and the refrigeration apparatus 140 cannot operate normally. In order to ensure the normal operation of the refrigeration device 140, the refrigerant medium absorbs the heat energy generated by the heat generating system 110 and transferred by the heat exchanger 120, so as to increase the temperature of the refrigerant medium, so that the gas content in the gas-liquid mixture ratio of the refrigerant medium is high, thereby increasing the suction pressure of the compressor 141, and the refrigeration device 140 can operate normally.

After the refrigerant medium enters the compressor 141, the compressor 141 compresses the refrigerant medium, the output end of the compressor 141 discharges high-temperature and high-pressure gaseous refrigerant medium, then the high-temperature and high-pressure gaseous refrigerant medium enters the condenser 142, the condenser 142 cools the gaseous refrigerant medium, then the output end of the condenser 142 discharges low-temperature and high-pressure refrigerant medium, and the low-temperature and high-pressure refrigerant medium enters the device to be cooled 140 to cool the refrigerant medium. Since the temperature of the high-pressure high-temperature gaseous refrigerant medium is higher than that of the ambient medium, and the pressure of the gaseous refrigerant medium enables the refrigerant medium to be condensed into a liquid state at a low temperature, the refrigerant medium is cooled and condensed into a high-pressure low-temperature liquid refrigerant medium when being discharged to the condenser 142.

In some embodiments, as shown in fig. 6, the device to be cooled 150 includes a first air-conditioning cooling module 151, the first air-conditioning cooling module 151 includes a first electronic expansion valve 1511, a first air-conditioning evaporator 1512 and a first pressure-temperature integrated sensor 1513, an input end of the first electronic expansion valve 1511 is connected with an output end of the condenser 142, an output end of the first electronic expansion valve 1511 is connected with an input end of the first air-conditioning evaporator 1512, an output end of the first air-conditioning evaporator 1512 is connected with an input end of the first pressure-temperature integrated sensor 1513, and an output end of the first pressure-temperature integrated sensor 1513 is connected with the heat exchanger 120.

In this embodiment, since the low-temperature high-pressure liquid refrigerant discharged from the condenser 141 flows into the first electronic expansion valve 1511, the first electronic expansion valve 1511 adjusts the flow rate and speed of the low-temperature high-pressure refrigerant medium flowing into the first air-conditioning evaporator 1512 according to the pressure and temperature adaptability of the refrigerant medium at the output end of the first air-conditioning evaporator 1512 detected by the first pressure and temperature integrated sensor 1513, the flow rate of the refrigerant medium is adjusted by the first electronic expansion valve 1511, and the low-temperature high-pressure liquid refrigerant medium is reduced in pressure due to throttling, and at the same time when the pressure of the refrigerant medium is reduced, the temperature of the liquid refrigerant medium is reduced by heat absorption due to boiling evaporation, so that the output end of the first electronic expansion valve 1511 discharges the low-temperature low-pressure refrigerant medium, and then the low-temperature low-pressure liquid refrigerant medium flows into the first air-conditioning evaporator 1512, and the first air-conditioning evaporator 1512 absorbs heat energy to evaporate the low-temperature liquid refrigerant medium which is changed into the low-temperature low-pressure liquid refrigerant mixed state refrigerant in the vehicle cabin 1512, and thus the vehicle interior of the vehicle is blown to lower temperature cabin and lower temperature of the vehicle. The low-temperature low-pressure gas-liquid mixed cold medium from the evaporator enters the heat exchanger 120 through the first pressure and temperature integrated sensor 1513, and then the cold medium is input to the compressor 141 through the heat exchanger 120, so that the whole cooling cycle is completed.

In some embodiments, as shown in fig. 7, the device to be cooled 150 includes a second air-conditioning cooling module 152, the second air-conditioning cooling module 152 includes a thermal expansion valve 1521 and a second air-conditioning evaporator 1522, an input end of the thermal expansion valve 1521 is connected to an output end of the condenser 142, an output end of the thermal expansion valve 1521 is connected to an input end of the second air-conditioning evaporator 1522, and an output end of the second air-conditioning evaporator 1522 is connected to the heat exchanger 120.

In this embodiment, since the thermal expansion valve 1521 has a temperature sensing portion for sensing the temperature of the refrigerant medium at the output end of the second air conditioner evaporator 1522, a pressure and temperature integrated sensor is not needed, so that the cost is reduced, and the thermal expansion valve 1521 senses the temperature of the refrigerant medium at the output end of the second air conditioner evaporator 1522 through a temperature sensing package, converts the temperature information into pressure information, and transmits the pressure information to the valve body of the thermal expansion valve 1521, so that the thermal expansion valve 1521 adjusts the flow rate of the low-temperature and high-pressure liquid refrigerant medium flowing into the second air conditioner evaporator 1522 according to the pressure information, thereby achieving the effect of adjusting the flow rate.

In some embodiments, as shown in fig. 8, the device to be cooled 150 includes a power battery cooling module 153, the power battery cooling module 153 includes a second electronic expansion valve 1531, a power battery cold plate 1532, and a second pressure and temperature integrated sensor 1533, an input end of the second electronic expansion valve 1531 is connected to an output end of the condenser 142, an output end of the second electronic expansion valve 1531 is connected to an input end of the power battery cold plate 1532, an output end of the power battery cold plate 1532 is connected to an input end of the second pressure and temperature integrated sensor 1533, and an output end of the second pressure and temperature integrated sensor 1533 is connected to the heat exchanger 120.

In this embodiment, the low-temperature and high-pressure liquid refrigerant medium is discharged from the output end of the condenser 142 and enters the second electronic expansion valve 1531, the second electronic expansion valve 1531 adaptively adjusts the flow rate and the speed of the low-temperature and high-pressure refrigerant medium flowing into the power cell cold plate 1532 according to the pressure and the temperature of the refrigerant medium at the output end of the power cell cold plate 1532 detected by the second pressure and temperature integrated sensor 1533, the low-temperature and low-pressure liquid refrigerant medium is discharged from the output end of the second electronic expansion valve 1532 and flows into the power cell cold plate 1533, the power cell cold plate 1533 uses the heat energy generated by the power cell to evaporate the low-temperature and low-pressure liquid refrigerant medium, so as to achieve the effect of cooling the power cell, the low-temperature and low-pressure gaseous refrigerant medium is output from the output end of the power cell cold plate 1533, and the low-temperature and low-pressure gaseous refrigerant medium flows into the compressor 141 through the heat exchanger 120, so as to circulate, thereby continuously cooling the power cell.

In some embodiments, as shown in fig. 9, the power battery cooling module 153 further comprises a throttle valve 1534, an input of the throttle valve 1534 is connected to an output of the second pressure and temperature integrated sensor 1533, and an output of the throttle valve 1534 is connected to the heat exchanger 120.

In this embodiment, the throttle valve 1534 may be a variable-diameter throttle valve, and the cross-sectional area of the refrigerant medium passing through the output end of the throttle valve 1534 is changed by changing the diameter or the radius of the output end of the throttle valve 1534, so as to change the flow rate of the refrigerant medium, in other embodiments, the throttle valve 1534 may also change the flow rate of the refrigerant medium, so that when the power battery cold plate 1532 cools the power battery, the temperature of the power battery is more uniform, so as to ensure safe driving of the vehicle, and increase the service life of the power battery of the vehicle.

In some embodiments, as shown in fig. 10, the device to be cooled 150 includes a first air conditioning cooling module 151 and a power battery cooling module 153. In this embodiment, the heat exchanger 120 transfers the heat energy generated by the heat generating system 110 into the heat exchanger 130 to heat the refrigerant medium in the second heat exchanger 130, increasing the suction pressure of the compressor 141, the compressor 141 compresses the refrigerant and the refrigerant medium to discharge a high-temperature and high-pressure gaseous refrigerant medium, the high-temperature and high-pressure gaseous refrigerant medium is cooled by the condenser 142 to obtain a low-temperature and high-pressure liquid refrigerant medium, the low-temperature and high-pressure liquid refrigerant medium enters the air-conditioning cooling module 151 and the power battery cooling module 153, respectively, wherein the first electronic expansion valve 1511 in the air-conditioning cooling module 151 and the second electronic expansion valve 1531 in the power battery cooling module 153 step down the high-temperature and low-temperature liquid refrigerant medium, respectively, and the first electronic expansion valve 1511 and the second electronic expansion valve 1531 adjust the pressure and the temperature of the refrigerant medium at the output end of the first air-conditioning evaporator 1512 and the output end of the power battery cold plate 1532 according to the corresponding first pressure and temperature integrated sensor 1513 and the second pressure and temperature integrated sensor 1533, so that the low-temperature liquid refrigerant medium flows into the first air-conditioning evaporator 1532 and then the low-temperature and low-pressure liquid refrigerant medium is evaporated by the first air-temperature integrated air-refrigerant heat exchanger 1533, so that the low-temperature medium is evaporated refrigerant medium is evaporated and then changed into the low-temperature mixed refrigerant medium 120; the power battery cold plate 1533 uses the heat energy generated by the power battery to evaporate the low-temperature low-pressure liquid refrigerant medium, and the output end of the power battery cold plate 13233 outputs the low-temperature low-pressure gas-liquid mixed refrigerant medium, and then flows into the heat exchanger 120 through the throttle valve 1534, so as to circulate.

In the present embodiment, the cooling device 140 has three cooling modes for the device to be cooled 150, that is, only the first air-conditioning cooling module 151 is cooled; cooling only the power battery module 153; and simultaneously cooling the first air-conditioning cooling module 151 and the power battery cooling module 153. In other embodiments, the first air conditioning cooling module 151 may be replaced with a second air conditioning cooling module 152.

Fig. 11 is a thermal management system of a vehicle according to an embodiment of the present application, and as shown in fig. 11, the thermal management system 100 of the vehicle includes a heat generating system 110, a heat exchanger 120, a heat exchanger 130, a cooling device 140, a device to be cooled 150, a heat sink 160, and a temperature sensor 170. Wherein the heat sink 160 includes a second proportional three-way valve 161, a driving device 162, and a heat sink 163; the refrigerating apparatus 140 includes a compressor 141, a condenser 142, and a pressure sensor 143; the device to be cooled 15150 comprises a first air-conditioning cooling module 15151 and a power battery cooling module 15153, wherein the first air-conditioning cooling module 15151 comprises a first electronic expansion valve 151511, a first air-conditioning evaporator 1512 and a first pressure-temperature integrated sensor 1513; the power cell cooling module 153 includes a second electronic expansion valve 1531, a power cell cold plate 1532, a second pressure and temperature integrated sensor 1533, and a throttle valve 1534.

In this embodiment, a cooling medium in the thermal management system 100 of the vehicle enters the heat generating system 110 through the driving device 162, the cooling medium absorbs heat to take away heat energy generated by the heat generating system 110 and inputs the heat energy to the temperature sensor 170, the temperature sensor 170 detects the temperature of the cooling medium, then the opening degrees of the second interface B and the third interface C of the first proportional three-way valve 120 are determined according to the temperature of the cooling medium and the requirement of the refrigerant, so that the heat energy required by the refrigerant is transferred from the heat-absorbed cooling medium to the heat exchanger 130 through the first interface a and the third interface C of the first proportional three-way valve 120, and the heat energy carried by the cooling medium is transferred to the refrigerant by the heat exchanger 130 to heat the refrigerant, so as to ensure that the refrigerant normally operates, the temperature of the cooling medium after the heat energy is transferred is reduced, and the cooling medium is input to the first interface X of the second proportional three-way valve 161 through the heat exchanger 130, and the third interface Z of the second proportional three-way valve 161 does not need to cool the cooling medium at this time, so that the cooling medium is transferred to the input end of the driving device 162; in the first proportional three-way valve 120, the heat energy carried by the remaining cooling medium is input to the first port X of the second proportional three-way valve 161 through the second port B of the first proportional three-way valve 120, and at this time, heat radiation is required for the cooling medium, so the cooling medium carrying the heat energy is input to the radiator 163 through the second port Y of the second proportional three-way valve 161, the cooling medium is air-cooled by the fan of the radiator 163, and the cooling medium after temperature reduction is returned to the driving device 162 through the output end of the radiator 163 to circulate, thereby continuously radiating heat to the heat generating system 110.

Optionally, part or all of the heat energy generated by the heat generating system 110 is transferred to the refrigerant through the heat exchanger 130 to heat the refrigerant, so as to increase the suction pressure of the compressor 141 in the refrigeration apparatus 140, increase the compression efficiency of the compressor 141 on the refrigerant medium, change the refrigerant medium compressed by the compressor 141 into a high-temperature high-pressure gaseous refrigerant medium, and then perform condensation cooling by the condenser 142 in the refrigeration apparatus 140 to obtain a low-temperature high-pressure liquid refrigerant medium, the output end of the condenser 142 is provided with the pressure sensor 143, the pressure sensor 143 detects the pressure of the low-temperature high-pressure liquid refrigerant medium output by the output end of the condenser, since the high-temperature high-pressure gaseous refrigerant medium is condensed and cooled by the condenser 142, the pressure will change to some extent, the pressure sensor 143 can determine the condensation efficiency of the condenser 142 according to the pressure of the refrigerant medium at the output end, if the detected pressure change of the refrigerant medium is smaller than a pressure threshold, the rotation speed and efficiency of the fan of the condenser are increased, so as to increase the condensation efficiency of the condenser 142, and the condensed low-temperature high-pressure liquid refrigerant medium can enter the first air-conditioning cooling module 151 and the power battery cooling module 153, respectively, and cool the cooling apparatus 15.

In the first air conditioner cooling module 151, the low-temperature high-pressure liquid refrigerant medium is subjected to pressure reduction through the first electronic expansion valve 1511 to obtain a low-temperature low-pressure liquid refrigerant medium, the first electronic expansion valve 1511 adjusts the flow rate of the low-temperature low-pressure liquid refrigerant medium flowing into the first air conditioner evaporator 1512 according to the temperature and pressure of the refrigerant medium at the output end of the first air conditioner evaporator 1512 detected by the first pressure and temperature integrated sensor 1513, the first air conditioner evaporator 1512 exchanges heat between the low-temperature low-pressure liquid refrigerant medium and the air around the first air conditioner evaporator 1512 to evaporate moisture in the air around the first air conditioner evaporator 1512, so that the temperature of the air around the first air conditioner evaporator 1512 is reduced, the cold air is blown into the vehicle cabin by the blower of the first air conditioner evaporator 1512 to reduce the temperature of the driving cabin and the passenger cabin of the vehicle, the output end of the first air conditioner evaporator 1512 outputs a normal-temperature low-pressure mixed state refrigerant, and then the cooling device 150 is used for cooling.

In the power battery cooling module 153, the low-temperature high-pressure liquid refrigerant medium is depressurized by the second electronic expansion valve 1531 to obtain a low-temperature low-pressure liquid refrigerant medium, the second electronic expansion valve 1531 adjusts a flow rate of the low-temperature low-pressure liquid refrigerant medium flowing into the power battery cold plate 1532 according to the temperature and the pressure of the refrigerant medium at the output end of the power battery cold plate 1532 detected by the second pressure and temperature integrated sensor 1533, the power battery cold plate 1533 derives heat energy generated by the power battery during the operation, and then performs energy exchange between the heat energy and the low-temperature low-pressure liquid refrigerant medium, the heat exchanged refrigerant medium is changed into a normal-temperature low-pressure liquid refrigerant medium, during the energy exchange of the power battery cold plate 1532, the flow rate of the refrigerant medium at the output end of the power battery cold plate 1532 is adjusted according to the sizes of the input end and the output end of the throttle valve 1534, so as to improve the temperature at the output end of the power battery cold plate 1532, thereby making the temperature of the power battery cold plate 1532 more uniform, the low-temperature liquid refrigerant medium passes through the low-temperature battery cold plate 1532, and then outputs the low-pressure liquid refrigerant medium to the low-temperature low-pressure mixed refrigerant medium to return to the normal-temperature low-temperature refrigerant medium heat exchanger 1534 for circulation, and sub-temperature heat exchange.

FIG. 12 is a thermal management system for a vehicle according to another embodiment of the present application, as shown in FIG. 12, including a first energy exchange device 110, a heat exchanger 120, and a second heat exchanger 130. Wherein the first energy exchange device 110 comprises a cooling medium driving device 112, a heat generating system 110, a temperature sensor 170, a first proportional three-way valve 120, a second proportional three-way valve 114 and a radiator 115; the second energy exchanging device 130 comprises a refrigerating device 131 and a device to be cooled 15, wherein the refrigerating device 131 comprises a compressor 1311, a condenser 1312 and a pressure sensor 1313; the device to be refrigerated 15 comprises a second air-conditioning cooling module 152 and a power battery cooling module 153, wherein the second air-conditioning cooling module 152 comprises a thermal expansion valve 1521 and a second air-conditioning evaporator 1522; the power battery cooling module 153 includes a second electronic expansion valve 1531, a power battery cold plate 1532, a second pressure and temperature integrated sensor 1533, and a throttle valve 1534.

In the present embodiment, the first air-conditioning cooling module 151 in the device to be cooled 15 in the second energy device 130 is replaced with the second air-conditioning cooling module 152. In the second air-conditioning cooling module 152, the thermostatic expansion valve 1521 reduces the pressure of the low-temperature high-pressure liquid refrigerant medium output by the condenser 1312, when the thermostatic expansion valve 1521 works, a temperature sensing bulb inside the thermostatic expansion valve 1521 senses the temperature at the output end of the second air-conditioning evaporator 1522, converts the temperature information into pressure information and transmits the pressure information to a valve body of the thermostatic expansion valve 1521, and the thermostatic expansion valve 1521 adjusts the flow rate of the refrigerant medium flowing into the second air-conditioning evaporator according to the pressure information.

In the thermal management system of the vehicle in fig. 11 and 12, there may be two operation modes, where in the first operation mode, when the vehicle is in an extremely low temperature environment or the environment where the vehicle is located is lower than a temperature threshold, for example, 20 degrees below zero, the heat energy generated by the heat generating system 110 in the thermal management system 100 of the vehicle is taken away by the cooling medium, the temperature of the cooling medium is detected by the temperature sensor 170 to determine the opening degree of each interface of the first proportional three-way valve 120, the cooling medium carrying the heat energy is transferred to the heat exchanger 130 through the third interface C of the first proportional three-way valve 120, the heat exchanger 130 exchanges energy between the cooling medium in the cooling device and the cooling medium carrying the heat energy, and the heat energy is used to heat the refrigerant, so that the temperature of the cooling medium increases, thereby increasing the suction pressure of the compressor 141 of the cooling device 140, and ensuring that the cooling device 140 can normally cool the cooling device 150.

The second operation mode is that when the vehicle is in a normal temperature environment or the environment of the vehicle is not lower than the temperature threshold, at this time, the suction pressure of the compressor 141 of the refrigeration apparatus 140 is sufficient, the refrigeration apparatus 140 can cool the device to be cooled 150 normally, the thermal energy generated by the heat generating system 110 is transmitted to the heat sink 160 through the second interface B of the first proportional three-way valve 120 by the cooling medium, the cooling medium carrying the thermal energy is received by the first interface X of the second proportional three-way valve 161 of the heat sink 160, at this time, the thermal energy carried by the cooling medium needs to be dissipated, so the cooling medium carrying the thermal energy is transmitted to the radiator 163 through the second interface Y of the second proportional three-way valve 161, and the radiator 163 dissipates the thermal energy generated by the heat generating system 110.

The present invention also provides a vehicle, as shown in fig. 13, the vehicle 10 including a vehicle body 200 and the thermal management system 100 of the vehicle described in any of the above embodiments.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the embodiments disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains.

It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A thermal management system for a vehicle, the thermal management system comprising:

a heat generation system that generates heat energy;

the refrigerating device is used for refrigerating the device to be cooled through a refrigerant;

a first proportional three-way valve for selectively transferring thermal energy generated by the heat generating system to a heat exchanger;

and the heat exchanger is selectively connected with the first proportional three-way valve and used for transferring heat energy to the refrigerant to heat the refrigerant when the first proportional three-way valve is communicated with the heat production system so as to ensure the normal work of the refrigerant.

2. The thermal management system of a vehicle of claim 1, further comprising a heat sink coupled to the first proportional three-way valve for dissipating heat energy generated by the heat-generating system when the first proportional three-way valve does not transfer the heat energy to the heat exchanger.

3. The vehicle thermal management system of claim 2, wherein the heat sink comprises a second proportional three-way valve, a drive, and a radiator, the second proportional three-way valve being connected to the first proportional three-way valve, the drive, and the radiator, respectively.

4. The thermal management system of a vehicle of claim 1, further comprising a temperature sensor connected to the heat generating system and the first proportional three-way valve, respectively, for adjusting an opening of the first proportional three-way valve according to the heat energy generated by the heat generating system.

5. The vehicle thermal management system of claim 1, wherein the refrigeration device comprises a compressor and a condenser, an input of the compressor is connected to the heat exchanger, an output of the compressor is connected to an input of the condenser, and an output of the condenser is connected to the device to be cooled.

6. The thermal management system of a vehicle of claim 5, wherein the device to be cooled comprises a first air conditioning cooling module, the first air conditioning cooling module comprises a first electronic expansion valve, a first air conditioning evaporator and a first pressure and temperature integrated sensor, an input end of the first electronic expansion valve is connected with an output end of the condenser, an output end of the first electronic expansion valve is connected with an input end of the first air conditioning evaporator, an output end of the first air conditioning evaporator is connected with an input end of the first pressure and temperature integrated sensor, and an output end of the first pressure and temperature integrated sensor is connected with the heat exchanger.

7. The vehicle thermal management system of claim 5, wherein the device to be cooled comprises a second air conditioning cooling module, the second air conditioning cooling module comprising a thermostatic expansion valve and a second air conditioning evaporator, an input of the thermostatic expansion valve being connected to an output of the condenser, an output of the thermostatic expansion valve being connected to an input of the second air conditioning evaporator, an output of the second air conditioning evaporator being connected to the heat exchanger.

8. The vehicle thermal management system according to claim 5, wherein the device to be cooled comprises a power battery cooling module, the power battery cooling module comprises a second electronic expansion valve, a power battery cold plate and a second pressure and temperature integrated sensor, an input end of the second electronic expansion valve is connected with an output end of the condenser, an output end of the second electronic expansion valve is connected with an input end of the power battery cold plate, an output end of the power battery cold plate is connected with an input end of the second pressure and temperature integrated sensor, and an output end of the second pressure and temperature integrated sensor is connected with the heat exchanger.

9. The vehicle thermal management system of claim 8, wherein the power cell cooling module further comprises a throttle valve, an input of the throttle valve being connected to an output of the second integrated pressure and temperature sensor, an output of the throttle valve being connected to the heat exchanger.

10. A vehicle characterized by comprising a vehicle body and the thermal management system of the vehicle of any one of claims 1-9, the thermal management system of the vehicle being disposed within the vehicle body.