CN115556538A - Thermal management system, control method and vehicle - Google Patents

Thermal management system, control method and vehicle Download PDF

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Publication number
CN115556538A
CN115556538A CN202211292766.2A CN202211292766A CN115556538A CN 115556538 A CN115556538 A CN 115556538A CN 202211292766 A CN202211292766 A CN 202211292766A CN 115556538 A CN115556538 A CN 115556538A
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China
Prior art keywords
temperature control
control loop
output end
heat
way valve
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CN202211292766.2A
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Chinese (zh)
Inventor
张志�
胡珂
阮先轸
陈星龙
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Guangzhou Automobile Group Co Ltd
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Guangzhou Automobile Group Co Ltd
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Priority to CN202211292766.2A priority Critical patent/CN115556538A/en
Publication of CN115556538A publication Critical patent/CN115556538A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
    • B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
    • B60H2001/00942—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices comprising a plurality of heat exchangers, e.g. for multi zone heating or cooling

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

The application belongs to the technical field of vehicles, and particularly relates to a thermal management system, a control method and a vehicle. The heat management system comprises a refrigerant loop, a heat exchange assembly and a temperature control assembly, wherein the refrigerant loop comprises a first output end and a second output end, and the heat output by the first output end is different from the heat output by the second output end; the heat exchange assembly comprises a first heat exchanger and a second heat exchanger; the temperature control assembly comprises a first temperature control loop and a second temperature control loop; in a refrigeration mode, the first output end is connected with the first temperature control loop through the first heat exchanger, and the second output end is connected with the second temperature control loop through the second heat exchanger; in the heating mode, the first output end is connected with the second temperature control loop through the second heat exchanger, and the second output end is connected with the first temperature control loop through the first heat exchanger. According to the technical scheme, the heat management system is simple in structural arrangement, the arrangement space is saved, and the comfort of the whole vehicle is considered.

Description

Thermal management system, control method and vehicle
Technical Field
The application belongs to the technical field of vehicles, and particularly relates to a thermal management system, a control method and a vehicle.
Background
With the gradual increase of the occupancy rate of the new energy automobile, a user puts higher requirements on the performances of the new energy automobile, such as safety, driving mileage, energy conservation and the like, wherein the thermal management system of the automobile heat plays a more critical role in the performance of the whole automobile.
Specifically, the relationship between the vehicle thermal management system of the vehicle and the power assembly system and the passenger compartment is the closest, the power assembly system mainly comprises a power battery pack, a motor and related electric control components of the vehicle, the key components have higher requirements on the working temperature in the working process, and the proper working temperature not only greatly influences the working efficiency of the components, but also influences the safety of the components and the vehicle. The heat management system in the related technical scheme occupies a large arrangement space, and the arrangement in the engine room is complex. It can be seen that a need exists for a thermal management system that overcomes the above-mentioned deficiencies of thermal management systems in the related art.
It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present application and therefore may include information that does not constitute prior art known to a person of ordinary skill in the art.
Disclosure of Invention
The application aims to provide a thermal management system, a control method and a vehicle, which realize simple structural arrangement of the thermal management system to a certain extent and save arrangement space.
Other features and advantages of the present application will be apparent from the following detailed description, or may be learned by practice of the application.
According to an aspect of an embodiment of the present application, there is provided a thermal management system, including:
the refrigerant loop comprises a first output end and a second output end, and the heat output by the first output end is different from the heat output by the second output end;
a heat exchange assembly comprising a first heat exchanger and a second heat exchanger;
the temperature control assembly comprises a first temperature control loop and a second temperature control loop;
in a refrigeration mode, the first output end is connected with the first temperature control loop through the first heat exchanger, and the second output end is connected with the second temperature control loop through the second heat exchanger;
in the heating mode, the first output end is connected with the second temperature control loop through the second heat exchanger, and the second output end is connected with the first temperature control loop through the first heat exchanger.
In some embodiments of the present application, based on the above technical solutions, the thermal management system further includes a first three-way valve, a first end of the first three-way valve is connected to the first output end, a second end of the first three-way valve is connected to the first temperature control loop, and a third end of the first three-way valve is connected to the second temperature control loop; the first three-way valve is used for controlling the first output end to be connected with the first temperature control loop, or the first output end is connected with the second temperature control loop.
In some embodiments of the present application, based on the above technical solutions, the thermal management system further includes a first proportional three-way valve, where the first temperature control loop includes a first sub temperature control loop and a second sub temperature control loop; and a first end of the first proportional three-way valve is connected with one end of the first three-way valve, a second end of the first proportional three-way valve is connected with the first sub temperature control loop, and a third end of the first proportional three-way valve is connected with the second sub temperature control loop.
In some embodiments of the present application, based on the above technical solutions, the thermal management system further includes a second three-way valve, a first end of the second three-way valve is connected to the second output end, a second end of the second three-way valve is connected to the first temperature control loop, and a third end of the second three-way valve is connected to the second temperature control loop; the second three-way valve is used for controlling the second output end to be connected with the first temperature control loop, or the second output end is connected with the second temperature control loop.
In some embodiments of the present application, based on the above technical solutions, the thermal management system further includes a second proportional three-way valve, and the first temperature control loop includes a first sub temperature control loop and a second sub temperature control loop; and a first end of the second proportional three-way valve is connected with the second three-way valve, a second end of the second proportional three-way valve is connected with the first sub temperature control loop, and a third end of the second proportional three-way valve is connected with the second sub temperature control loop.
In some embodiments of the present application, based on the above technical solutions, the refrigerant loop includes a water evaporator, a compressor, and a water condenser, and the water evaporator, the compressor, and the water condenser are sequentially connected in series to form a circulation loop.
In some embodiments of the present application, based on the above technical solutions, the second temperature control loop includes a radiator, and the second heat exchanger is connected to the radiator in a cooling state.
In some embodiments of the present application, based on the above technical solution, the second temperature control loop includes a heating component, and a loop where the heating component is located is connected in parallel with a loop where the radiator is located; in a heating state, the second heat exchanger is connected to the heating member.
According to an aspect of the embodiments of the present application, there is provided a thermal management system control method applied to the thermal management system described above, the method including:
if a refrigeration signal is received, heat of the first output end is subjected to heat exchange with the first temperature control loop through the first heat exchanger so as to refrigerate the first temperature control loop, and heat of the second output end is subjected to heat exchange with the second temperature control loop through the second heat exchanger so as to dissipate heat;
and if the heating signal is received, the heat of the second output end exchanges heat with the first temperature control loop through the first heat exchanger so as to heat the first temperature control loop, and the heat of the first output end exchanges heat with the second temperature control loop through the second heat exchanger so as to heat.
According to an aspect of an embodiment of the present application, there is provided a vehicle including a thermal management system as described above.
In the technical scheme provided by the embodiment of the application, the first output end and the second output end are respectively connected with the first temperature control loop or the second temperature control loop through the first heat exchanger or the second heat exchanger, so that the refrigeration and heating functions are realized, the control on the cabin temperature is realized, and the cooling system of the heat management system is integrated, so that the whole structure is compact in arrangement, and the arrangement space is saved. The technical scheme of this application has realized to a certain extent that thermal management system's structural arrangement is simple, has saved and has arranged the space, and has compromise the travelling comfort of whole car simultaneously.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 schematically shows a structural diagram of a thermal management system to which an embodiment of the present application is applied.
Fig. 2 schematically shows a flowchart of a thermal management system control method to which an embodiment of the present application is applied.
FIG. 3 schematically illustrates a circuit diagram of a thermal management system to which an embodiment of the present application is applied.
FIG. 4 schematically illustrates a circuit diagram of a thermal management system to which another embodiment of the present application may be applied.
FIG. 5 schematically illustrates a circuit diagram of a thermal management system to which another embodiment of the present application may be applied.
FIG. 6 schematically illustrates a circuit diagram of a thermal management system to which another embodiment of the present application may be applied.
FIG. 7 schematically shows a circuit diagram of a thermal management system to which another embodiment of the present application may be applied.
10-a refrigerant loop; 20-a heat exchange assembly; 21-a first heat exchanger; 22-a second heat exchanger; 31-a first temperature control loop; 32-a second temperature control loop; 41-a first three-way valve; 42-a first proportional three-way valve; 43-a second three-way valve; 44-second proportional three-way valve.
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 application. One skilled in the relevant art will recognize, however, that the embodiments of the present application can 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 application.
The block diagrams shown in the figures are functional entities only and do not necessarily correspond to physically separate entities. I.e. these functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor means and/or microcontroller means.
The flowcharts shown in the figures are illustrative only and do not necessarily include all of the contents and operations/steps, nor do they necessarily have to be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.
Generally, a heat management system in a related technical scheme mainly comprises an air-conditioning refrigerant loop, an air-conditioning heating loop, a battery temperature control loop and an electric drive temperature control loop, wherein the air-conditioning refrigerant loop mainly comprises a compressor, a condenser, an expansion valve, an evaporator, a pipeline and the like, the condenser is usually arranged at the front end of the structure, the condenser, a radiator and a cooling fan form a front-end cooling module, the evaporator is arranged in an air-conditioning box body, and the air-conditioning box body is usually arranged below an instrument desk of a passenger compartment, so that the refrigerant loop needs a longer refrigeration pipeline and occupies a larger arrangement space.
In addition, in the related technical solutions, in the heating mode, the heating amount in the heat pump mode is insufficient, and a PTC heating mode still needs to be adopted to supplement or replace the heat pump system to provide a heating function for the passenger compartment and the battery, so that the energy efficiency is relatively low.
In order to solve the above problem, the present application proposes a thermal management system, including: the heat exchanger comprises a refrigerant loop, a heat exchange assembly and a temperature control assembly, wherein the refrigerant loop comprises a first output end and a second output end, and the heat output by the first output end is different from that of the second output end; the heat exchange assembly comprises a first heat exchanger and a second heat exchanger; the temperature control assembly comprises a first temperature control loop and a second temperature control loop; in a refrigeration mode, the first output end is connected with the first temperature control loop through the first heat exchanger, and the second output end is connected with the second temperature control loop through the second heat exchanger; in the heating mode, the first output end is connected with the second temperature control loop through the second heat exchanger, and the second output end is connected with the first temperature control loop through the first heat exchanger. Therefore, the first output end and the second output end are connected with the first temperature control loop or the second temperature control loop through the first heat exchanger or the second heat exchanger respectively, so that the refrigeration and heating functions are realized, the control on the cabin temperature is realized, and the cooling system of the heat management system is integrated, so that the whole structure is compact in arrangement, and the arrangement space is saved. The technical scheme of this application has realized to a certain extent that thermal management system's structural arrangement is simple, has saved and has arranged the space, and has compromise the travelling comfort of whole car simultaneously.
The following provides a detailed description of the thermal management system, the control method, and the vehicle according to the present application.
Referring to fig. 1, fig. 1 schematically shows a structural diagram of a thermal management system to which an embodiment of the present application is applied. The thermal management system comprises:
the refrigerant loop 10 comprises a first output end and a second output end, and the heat output by the first output end is different from that of the second output end;
a heat exchange assembly 20 comprising a first heat exchanger 21 and a second heat exchanger 22;
a temperature control assembly comprising a first temperature control loop 31 and a second temperature control loop 32;
in the cooling mode, the first output end is connected with the first temperature control loop 31 through the first heat exchanger 21, and the second output end is connected with the second temperature control loop 32 through the second heat exchanger 22;
in the heating mode, the first output end is connected with the second temperature control loop 32 through the second heat exchanger 22, and the second output end is connected with the first temperature control loop 31 through the first heat exchanger 21.
The refrigerant loop 10 may include a loop formed by connecting evaporator-hybrid condensers in series, two output ends of the refrigerant loop 10 may be an output end of a water condenser and an output end of a water evaporator, that is, a first output end and a second output end, one output end outputs cold energy, and the other output end outputs heat energy. The skilled person can control the first output end and the second output end to be connected to the first temperature control loop 31 or the second temperature control loop 32 according to different requirements of cooling or heating, so as to realize the temperature control. When the first output terminal and the second output terminal are connected to the first temperature control circuit 31 or the second temperature control circuit 32, the first heat exchanger or the second heat exchanger may be used to realize the connection, so that the cooling or heating function is realized.
Next, the refrigerant circuit 10 is integrated. Therefore, the refrigerant circuit 10 is compactly arranged in the engine room, refrigerant working media do not flow through the passenger room, and the safety of the system is improved.
In the technical scheme provided by the embodiment of the application, the first output end and the second output end are respectively connected with the first temperature control loop 31 or the second temperature control loop 32 through the first heat exchanger or the second heat exchanger 22, so that the refrigeration and heating functions are realized, the control on the cabin temperature is realized, and the cooling system of the thermal management system is integrated, so that the whole structure arrangement is compact, and the arrangement space is saved. The technical scheme of the application realizes that the structure of the heat management system is simple to arrange to a certain extent, saves the arrangement space and simultaneously considers the comfort of the whole vehicle.
In one embodiment of the present application, the refrigerant circuit 10 comprises a water evaporator W-EVA, a compressor ECP and a water condenser W-CON, which are connected in series to form a circulation circuit.
Specifically, a gas-liquid separator ACC is arranged at an inlet of a compressor ECP, the compressor ECP compresses a low-temperature low-pressure gaseous refrigerant from a water evaporator W-EVA into a high-temperature high-pressure refrigerant gas, the high-temperature high-pressure refrigerant gas is liquefied and released heat through a water condenser W-CON, heat is absorbed by the water side of the water condenser W-CON, the refrigerant phase change and release heat is medium-temperature high-pressure liquid, the medium-temperature high-pressure liquid is cooled and throttled and depressurized through an electronic expansion valve to be changed into medium-temperature low-pressure liquid, fine mist beads formed after throttling and depressurization are sprayed into the water evaporator W-EVA to complete vaporization and heat absorption, and cold energy is absorbed by a water side loop of the water evaporator W-EVA. The output end of the water evaporator and the output end of the water condenser are respectively used as a first output end and a second output end, and different heat is output through the first output end and the second output end, so that refrigeration or heating control can be realized.
Therefore, the refrigerant loop is integrated, so that the refrigerant loop is compactly arranged in the cabin, refrigerant working medium does not flow through the passenger cabin, and the safety of the system is improved.
In an embodiment of the present application, the thermal management system further includes a first three-way valve 41, a first end of the first three-way valve 41 is connected to the first output end, a second end of the first three-way valve 41 is connected to the first temperature control circuit 31, and a third end of the first three-way valve 41 is connected to the second temperature control circuit 32; the first three-way valve 41 is used for controlling the first output end to be connected with the first temperature control loop 31, or the first output end to be connected with the second temperature control loop 32. If the first output end is connected with the first temperature control loop, the refrigeration control of the temperature of the first temperature control loop can be realized.
Alternatively, a water level sensor T may be provided between the first output and the first three-way valve 41, by which the temperature of the water in the pipeline is controlled.
Therefore, the first three-way valve is arranged at the first output end, so that the heat of the first output end can be controlled to be output to the first temperature control loop or the second temperature control loop, and the temperature control of the first temperature control loop or the second temperature control loop is realized. The control structure is simple and convenient to realize control.
In one embodiment of the present application, the thermal management system further comprises a first proportional three-way valve 42, and the first temperature control loop 31 comprises a first sub temperature control loop and a second sub temperature control loop; a first end of the first proportional three-way valve 42 is connected to one end of the first three-way valve 41, a second end is connected to the first sub temperature control circuit, and a third end is connected to the second sub temperature control circuit.
Specifically, the first sub-temperature control loop may be a loop where a battery is located, and the second temperature control loop 32 may be a loop where an air conditioner is located. A first proportional three-way valve 42 is arranged between the first three-way valve 41 and the first heat exchanger 21, and the heat output by the first output end can be conducted to the first sub-temperature control circuit or the second sub-temperature control circuit by arranging the first proportional three-way valve 42.
Taking the connection of the first output end and the first temperature control loop as an example, because the first output end outputs the refrigerant, the heat exchange between the refrigerant and the first sub-temperature control loop where the battery is located or the heat exchange between the refrigerant and the second sub-temperature control loop where the air conditioner is located can be controlled by arranging the first proportional three-way valve, so that the refrigeration of the loop where the battery is located or the loop where the air conditioner is located can be realized.
Thus, the first proportional three-way valve 42 is arranged between the first three-way valve 41 and the first heat exchanger, and the heat output by the first output end can be conducted to the first sub-temperature control loop or the second sub-temperature control loop by arranging the first proportional three-way valve 42, so that the temperature control of the first sub-temperature control loop and the second sub-temperature control loop is facilitated, the control structure is simple, and the control is facilitated.
In an embodiment of the present application, the thermal management system further includes a second three-way valve 43, a first end of the second three-way valve 43 is connected to the second output end, a second end is connected to the first temperature control circuit 31, and a third end is connected to the second temperature control circuit 32; the second three-way valve 43 is used to control the second output end to be connected with the first temperature control loop 31, or the second output end to be connected with the second temperature control loop 32.
Alternatively, a water level sensor T may be provided between the second output and the second three-way valve 43, by which the temperature of the water in the pipeline is controlled.
In this way, by providing the second three-way valve 43 at the second output end, the heat output of the second output end can be controlled to the first temperature control circuit 31 or the second temperature control circuit 32, so as to realize the temperature control of the first temperature control circuit 31 or the second temperature control circuit 32. The control structure is simple and convenient to realize control.
In one embodiment of the present application, the thermal management system further comprises a second proportional three-way valve 44, the first temperature control loop 31 comprises a first sub temperature control loop and a second sub temperature control loop; a first end of the second proportional three-way valve 44 is connected to the second three-way valve 43, a second end is connected to the first sub temperature control loop, and a third end is connected to the second sub temperature control loop.
Specifically, the first sub-temperature control loop may be a loop where a battery is located, and the second temperature control loop 32 may be a loop where an air conditioner is located. A second proportional three-way valve 44 is arranged between the second three-way valve 43 and the first heat exchanger 21, and the heat output by the second output end can be conducted to the first sub temperature control circuit or the second sub temperature control circuit by arranging the second proportional three-way valve 44.
Like this, set up second proportion three-way valve 44 between second three-way valve 43 and first heat exchanger, thereby can realize through setting up second proportion three-way valve 44 that the heat of second output switches on to first sub temperature control circuit or second sub temperature control circuit, be convenient for realize the temperature control to first sub temperature control circuit and second sub temperature control circuit, this control structure is simple, is convenient for realize controlling.
In one embodiment of the present application, the second temperature controlled circuit 32 includes a radiator to which the second heat exchanger 22 is connected in the cooling state. Thus, the radiator is arranged, so that the heat of the second output end can be favorably dissipated.
In one embodiment of the present application, the second temperature control loop 32 includes a heating component, and a loop in which the heating component is located is connected in parallel with a loop in which the radiator is located; in the heating state, the second heat exchanger 22 is connected to the heating member. Therefore, the waste heat of the second temperature control loop is absorbed, and the circulation of heat can be realized.
It should be noted that although the various steps of the methods in this application are depicted in the drawings in a particular order, this does not require or imply that these steps must be performed in this particular order, or that all of the shown steps must be performed, to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step execution, and/or one step broken down into multiple step executions, etc.
Method embodiments of the present application are described below, which may be applied to thermal management systems in the above-described embodiments of the present application. Fig. 2 schematically shows a flowchart of a thermal management system control method to which an embodiment of the present application is applied. The execution subject of the method may be, for example, a controller, as shown in fig. 2, and the method includes the following steps:
step S201, if a refrigeration signal is received, heat exchange is carried out on heat of a first output end and a first temperature control loop through a first heat exchanger so as to refrigerate the first temperature control loop, and heat exchange is carried out on heat of a second output end and a second temperature control loop through a second heat exchanger so as to radiate heat;
step S202, if the heating signal is received, heat exchange is carried out on the heat of the second output end and the first temperature control loop through the first heat exchanger so as to heat the first temperature control loop, and heat exchange is carried out on the heat of the first output end and the second temperature control loop through the second heat exchanger so as to heat.
In the technical scheme provided by the embodiment of the application, the first output end and the second output end are respectively connected with the first temperature control loop or the second temperature control loop through the first heat exchanger or the second heat exchanger, so that the refrigeration and heating functions are realized, the control on the cabin temperature is realized, and the cooling system of the heat management system is integrated, so that the whole structure is compact in arrangement, and the arrangement space is saved. The technical scheme of this application has realized to a certain extent that thermal management system's structural arrangement is simple, has saved and has arranged the space, and has compromise the travelling comfort of whole car simultaneously.
To facilitate understanding of aspects of embodiments of the present application, reference is made to fig. 3 for example, where fig. 3 schematically illustrates a circuit diagram of a thermal management system to which an embodiment of the present application may be applied. The schematic diagram shows that the first output end is connected with a loop (namely an air conditioner temperature control water path) where an air conditioner is located in the first temperature control loop through a first three-way valve, and the second output end is connected with a second temperature control loop (also called an electric drive temperature control water path) through a second three-way valve and a second heat exchanger.
Specifically, when the controller receives a passenger compartment refrigerating signal from an air conditioning system, a gas-liquid separator ACC is arranged at the inlet of a compressor ECP, the compressor ECP compresses low-temperature and low-pressure gaseous refrigerant from a water evaporator W-EVA into high-temperature and high-pressure refrigerant gas, and the high-temperature and high-pressure refrigerant gas is liquefied and releases heat through a water condenser W-CON. The heat is absorbed by the water side of the water condenser W-CON, the refrigerant phase change releases heat to medium-temperature high-pressure liquid, and the medium-temperature high-pressure liquid is cooled and then is throttled and depressurized by an electronic expansion valve to be changed into medium-temperature low-pressure liquid. And spraying the fine mist droplets formed after throttling and pressure reduction into the W-EVA of the water evaporator to complete vaporization and heat absorption, and absorbing cold energy by a water side loop of the W-EVA of the water evaporator. The W-EVA water path outlet (namely the first output end) of the water evaporator is connected with the air conditioner temperature control water path by controlling the first three-way valve and the first proportional three-way valve. The air conditioner temperature control water path controls the water flow through the rotating speed of the water pump, and therefore the temperature in the passenger cabin can be controlled. In addition, the aim of the temperature control water circuit of the air conditioner is realized by combining the PT sensor of the outlet refrigerant of the water evaporator with the regulation of the rotating speed of the compressor.
For the output end (namely a second output end) of the water condenser, a water side loop of the water condenser realizes the water channel connection of the water condenser and the three-in-one heat exchanger HX _ Rad for electrically driving the temperature control water channel and exchanging heat of a refrigerant loop through a second three-way valve. The regulation of discharge is realized through the rotational speed control of water pump, and trinity heat exchanger HX _ Rad passes through the control of three-way valve, realizes establishing ties with the radiator water route, realizes that the water condenser carries the heat to the radiator promptly, and the forced convection through front end fan Rad at last is with the heat transfer to the ambient air in.
Referring to fig. 4, fig. 4 schematically illustrates a circuit diagram of a thermal management system to which another embodiment of the present application is applied. The schematic shows the first output connected to a second temperature controlled loop (also referred to as an electrically driven temperature controlled water circuit) and the second output connected to the first temperature controlled water circuit through a second three-way valve, a second proportional three-way valve and a first heat exchanger.
Specifically, when a controller receives a heating signal of a passenger cabin from an air conditioning system, a compressor compresses a low-temperature low-pressure gaseous refrigerant from a water evaporator into a high-temperature high-pressure refrigerant gas, a gas-liquid separator is arranged at an inlet of the compressor, the high-temperature high-pressure refrigerant gas is liquefied and released heat through a water condenser, heat is absorbed by the water side of the water condenser, the phase of a refrigerant is changed into medium-temperature high-pressure liquid, the medium-temperature high-pressure liquid is cooled and throttled and depressurized through an electronic expansion valve to be changed into medium-temperature low-pressure liquid, fine droplets formed after throttling and depressurization are sprayed into the water evaporator to complete vaporization and heat absorption, and the heat source of the water evaporator is that a water side loop absorbs heat of an electric drive system.
The waterway outlet of the water evaporator realizes the series connection of a water side loop of the water evaporator and the three-in-one heat exchanger HX _ Rad waterway by controlling the three-way valve, the regulation of water flow is realized by the electronic water pump in front of the water evaporator, and meanwhile, the accurate control of water temperature can be realized by the water temperature sensor behind the water evaporator. The three-in-one heat exchanger HX _ Rad is connected with an electrically-driven waterway loop, the working condition is a large series mode, namely HX _ Rad-DC front water pump-DC-PDU-Moter-bypass loop-three-way valve-HX _ Rad front water pump-HX _ Rad is realized through a three-way valve behind HX _ Rad, and the requirement for heating a passenger compartment is met through the waste heat of the electrically-driven waterway and the self-heating mode of the motor.
For the output end (namely a second output end) of the water condenser, the water side loop of the water condenser realizes the series connection of the water condenser waterway and the HX _ HVAC waterway through the control three-way valve and the proportional three-way valve, and the water flow is regulated through a water pump in front of the water condenser. The air-conditioning temperature control water path realizes the adjustment of water flow by controlling the rotating speed of the water pump, and realizes the target adjustment of heating comfort of the passenger compartment by controlling the target water temperature. The aim of the temperature control water channel of the air conditioner is realized by combining the PT sensor of the outlet refrigerant of the water evaporator with the regulation of the rotating speed of the compressor.
Referring to FIG. 5, FIG. 5 schematically illustrates a circuit diagram of a thermal management system to which another embodiment of the present application may be applied. The schematic diagram shows that the first output end is connected with a circuit (namely a battery temperature control water circuit) where a battery is located in the first temperature control loop through a first three-way valve, and the second output end is connected with a second temperature control loop (also called an electric drive temperature control water circuit) through a second three-way valve and a second heat exchanger.
Specifically, when the controller receives a signal that the battery pack needs to be cooled, a gas-liquid separator is arranged at the inlet of a compressor, the compressor compresses a low-temperature low-pressure gaseous refrigerant from a water evaporator into high-temperature high-pressure refrigerant gas, the high-temperature high-pressure refrigerant gas is liquefied and released through a water condenser, heat is absorbed by the water side of the water condenser, the refrigerant phase change and release heat is changed into medium-temperature high-pressure liquid, the medium-temperature high-pressure liquid is cooled and throttled and reduced in pressure through an electronic expansion valve to be changed into medium-temperature low-pressure liquid, fine small fog beads formed after throttling and reduction are sprayed into the water evaporator to complete vaporization and heat absorption, cold energy is absorbed by a water side loop of the water evaporator, a water path outlet of the water evaporator is connected with a battery temperature control water path through a control three-way valve and a proportional three-way valve, the water path realizes water flow adjustment through the rotation speed control of a water pump, and realizes the target temperature control of the battery pack. The aim of the battery temperature control water channel is realized by combining the PT sensor of the outlet refrigerant of the water evaporator with the adjustment of the rotating speed of the compressor.
For the output end (namely a second output end) of the water condenser, a water side loop of the water condenser realizes the water path connection of the water condenser and the three-in-one heat exchanger HX _ Rad electrically driving the temperature control water path and exchanging heat with a refrigerant loop through a three-way valve, the regulation of water flow is realized through the control of the rotating speed of the water pump, the three-in-one heat exchanger HX _ Rad is connected with a radiator water path in series through the control of the three-way valve, namely the water condenser carries heat to the radiator, and finally the heat is transferred to the outside air through the forced convection of a front end fan.
Referring to FIG. 6, FIG. 6 schematically illustrates a circuit diagram of a thermal management system to which another embodiment of the present application may be applied. When the controller receives a signal of battery heating requirement, the electric compressor compresses a low-temperature low-pressure gaseous refrigerant from the water evaporator into a high-temperature high-pressure refrigerant gas, a gas-liquid separator is arranged at the inlet of the compressor, the high-temperature high-pressure refrigerant gas is liquefied and released heat through the water condenser, the heat is absorbed by the water side of the water condenser, the refrigerant phase change released heat is medium-temperature high-pressure liquid, the medium-temperature high-pressure liquid is throttled and depressurized through an electronic expansion valve and then is changed into medium-temperature low-pressure liquid, fine mist beads formed after throttling and depressurization are sprayed into the water evaporator to complete vaporization and heat absorption, and the heat source of the water evaporator is the heat of an electric driving system absorbed by a water side loop. The waterway outlet of the water evaporator realizes the series connection of a water side loop of the water evaporator and the three-in-one heat exchanger HX _ Rad waterway by controlling the three-way valve, the regulation of water flow is realized by the electronic water pump in front of the water evaporator, and meanwhile, the accurate control of water temperature can be realized by the water temperature sensor behind the water evaporator. The three-in-one heat exchanger HX _ Rad is connected with an electrically-driven waterway circuit, the working condition is a large series mode, namely, HX _ Rad-DC front water pump-DC-PDU-Moter-bypass circuit-three-way valve-HX _ Rad front water pump-HX _ Rad is realized through a three-way valve behind HX _ Rad, and the requirement of battery heating is met through waste heat of the electrically-driven waterway and a motor self-heating mode. The water side loop of the water condenser realizes the series connection of a water condenser waterway and an HX _ Bat waterway through a control three-way valve and a proportion three-way valve, and the water flow is regulated through a water pump in front of the water condenser. The battery temperature control water path realizes the adjustment of water flow by controlling the rotating speed of the water pump, and realizes the target adjustment of battery heating by controlling the target water temperature. The aim of the battery temperature control water channel is realized by combining an outlet refrigerant PT sensor of the water evaporator with the regulation of the rotating speed of the compressor.
Referring to FIG. 7, FIG. 7 schematically illustrates a circuit diagram of a thermal management system to which another embodiment of the present application may be applied. When the controller receives a signal that an electric drive system needs to be cooled, the three-way valve behind the radiator is controlled to be in a large circulation mode according to the temperature of the water temperature sensor, the electric drive water pump controls the water flow flowing through the DC-PDU-motor electric drive through the PWM duty ratio, then the heat is transferred to the outside air through the forced convection of the front-end fan through the radiator, and the cooling function of the electric drive system is realized.
The specific details of the thermal management system control device provided in each embodiment of the present application have been described in detail in the corresponding method embodiment, and are not described herein again.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams or flowchart illustration, and combinations of blocks in the block diagrams or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
It should be noted that although in the above detailed description several modules or units of the device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functionality of two or more modules or units described above may be embodied in one module or unit, according to embodiments of the application. Conversely, the features and functions of one module or unit described above may be further divided into embodiments by a plurality of modules or units.
Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, or by software in combination with necessary hardware. Therefore, the technical solution according to the embodiments of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a usb disk, a removable hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which can be a personal computer, a server, a touch terminal, or a network device, etc.) to execute the method according to the embodiments of the present application.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application 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 present application is not limited to the precise arrangements that have been 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 application is limited only by the appended claims.

Claims (10)

1. A thermal management system, comprising:
the refrigerant loop comprises a first output end and a second output end, and the heat output by the first output end is different from that output by the second output end;
a heat exchange assembly comprising a first heat exchanger and a second heat exchanger;
the temperature control assembly comprises a first temperature control loop and a second temperature control loop;
in a refrigeration mode, the first output end is connected with the first temperature control loop through the first heat exchanger, and the second output end is connected with the second temperature control loop through the second heat exchanger;
in the heating mode, the first output end is connected with the second temperature control loop through the second heat exchanger, and the second output end is connected with the first temperature control loop through the first heat exchanger.
2. The thermal management system of claim 1, further comprising a first three-way valve having a first end connected to the first output, a second end connected to the first temperature control loop, and a third end connected to the second temperature control loop;
the first three-way valve is used for controlling the first output end to be connected with the first temperature control loop or the first output end to be connected with the second temperature control loop.
3. The thermal management system of claim 2, further comprising a first proportional three-way valve, the first temperature control loop comprising a first sub temperature control loop and a second sub temperature control loop;
and a first end of the first proportional three-way valve is connected with one end of the first three-way valve, a second end of the first proportional three-way valve is connected with the first sub temperature control loop, and a third end of the first proportional three-way valve is connected with the second sub temperature control loop.
4. The thermal management system of claim 1, further comprising a second three-way valve having a first end connected to the second output, a second end connected to the first temperature control loop, and a third end connected to the second temperature control loop;
the second three-way valve is used for controlling the second output end to be connected with the first temperature control loop, or the second output end is connected with the second temperature control loop.
5. The thermal management system of claim 4, further comprising a second proportional three-way valve, the first temperature control loop comprising a first sub-temperature control loop and a second sub-temperature control loop;
and a first end of the second proportional three-way valve is connected with the second three-way valve, a second end of the second proportional three-way valve is connected with the first sub temperature control loop, and a third end of the second proportional three-way valve is connected with the second sub temperature control loop.
6. The thermal management system of claim 1, wherein said refrigerant loop comprises a water evaporator, a compressor, and a water condenser, said water evaporator, said compressor, and said water condenser being serially connected in series to form a recirculation loop.
7. The thermal management system of claim 1, wherein the second temperature control circuit comprises a heat sink, and wherein the second heat exchanger is coupled to the heat sink in the cooling state.
8. The thermal management system of claim 7, wherein the second temperature control loop comprises a heating component in parallel with a loop of the heat sink; in a heating state, the second heat exchanger is connected with the heating component.
9. A thermal management system control method applied to the thermal management system according to any one of claims 1 to 8, the method comprising:
if a refrigeration signal is received, heat exchange is carried out on the heat of the first output end and the first temperature control loop through the first heat exchanger so as to refrigerate the first temperature control loop, and heat exchange is carried out on the heat of the second output end and the second temperature control loop through the second heat exchanger so as to carry out heat dissipation;
and if the heating signal is received, the heat of the second output end is subjected to heat exchange with the first temperature control loop through the first heat exchanger so as to heat the first temperature control loop, and the heat of the first output end is subjected to heat exchange with the second temperature control loop through the second heat exchanger so as to heat.
10. A vehicle comprising a thermal management system according to any one of claims 1 to 8.
CN202211292766.2A 2022-10-21 2022-10-21 Thermal management system, control method and vehicle Pending CN115556538A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211292766.2A CN115556538A (en) 2022-10-21 2022-10-21 Thermal management system, control method and vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211292766.2A CN115556538A (en) 2022-10-21 2022-10-21 Thermal management system, control method and vehicle

Publications (1)

Publication Number Publication Date
CN115556538A true CN115556538A (en) 2023-01-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211292766.2A Pending CN115556538A (en) 2022-10-21 2022-10-21 Thermal management system, control method and vehicle

Country Status (1)

Country Link
CN (1) CN115556538A (en)

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