Integrated Thermal Management System and New Energy Vehicle

Abstract

The present application provides an integrated thermal management system and a new energy vehicle. Among them, the compressor is connected to the water-cooled condenser. The compressor is used to convert low-pressure refrigerant into high-pressure refrigerant and transmit the high-pressure refrigerant to the water-cooled condenser. The water-cooled condenser is used to absorb the heat of the high-pressure refrigerant. The water-cooled condenser is also connected to an integrated water valve, and the water circulation loop passes through the integrated water valve, the water-cooled condenser and the battery. Among them, the water that has absorbed the heat of the high-pressure refrigerant passes through the battery through the water circulation loop, enabling the battery to store heat. The water-cooled condenser is also connected to a cooling device. Among them, the high-pressure refrigerant output from the water-cooled condenser is input into the cooling device, and the cooling device is used to generate cold energy based on the high-pressure refrigerant. The cold energy passes through the battery through the water circulation loop, enabling the battery to store cold energy. The present application can perform thermal management on the vehicle. At the same time, by using a fixed displacement compressor or a multi-stage compressor, the present application can reduce power consumption and cost.

Description

Technical Field

[0001] This application relates to the field of vehicle thermal management. Specifically, it relates to an integrated thermal management system and a new energy vehicle. Background Art

[0002] Currently, the thermal management system in vehicles has the following disadvantages:

[0003] 1. The heat pump air conditioner has many components, high costs, difficult control, and the thermal management system is not integrated, resulting in high energy consumption. There is a lack of clear and effective means and strategies for comprehensive energy utilization, leading to the inability to unify the air conditioner and thermal management architectures of various vehicle models;

[0004] 2. The infinitely variable speed variable displacement compressor technology for large-displacement heat pump air conditioners is difficult, has a long development time, and high costs; and due to the limited layout space of the vehicle, the heat exchange capacity between the vehicle and the outside world is limited. Considering the above two points, the maximum capacity improvement of the automotive air conditioning system is severely restricted; when the passenger compartment cooling / heating and battery cooling / heating are turned on simultaneously, there is often a problem of insufficient maximum capacity, resulting in a poor user experience;

[0005] 3. For super-fast charging with a charging rate of 3C / 6C or even higher, the peak heat generation of the battery is more than 4 times that of the maximum cooling capacity of the current conventional automotive air conditioner, and the conventional air conditioner thermal management system cannot meet the requirements;

[0006] 4. Sports cars or SPORT+ have extremely high requirements for the power performance of the vehicle. The instantaneous heat generation of the battery may be more than 20 times that of the maximum cooling capacity of the current conventional automotive air conditioner. Currently, there is a lack of effective strategies for management, and the duration of the maximum power output in a high-temperature environment is severely restricted, resulting in a poor user experience;

[0007] 5. The battery requires full-life cycle health management. Currently, the battery service life is limited, the battery performance deteriorates during the vehicle life, and the safety risk increases; Summary of the Invention

[0008] The purpose of the embodiments of this application is to provide an integrated thermal management system and a new energy vehicle for thermal management of the vehicle and to solve at least one of the above technical problems.

[0009] To this end, the first aspect of this application discloses an integrated thermal management system, including: a compressor, a water-cooled condenser, a cooling device, and an integrated water valve;

[0010] The compressor is connected to the water-cooled condenser. The compressor is used to convert low-pressure refrigerant into high-pressure refrigerant and transmit the high-pressure refrigerant to the water-cooled condenser. The water-cooled condenser is used to absorb the heat of the high-pressure refrigerant. The water-cooled condenser is also connected to the integrated water valve, and the water circulation loop passes through the integrated water valve, the water-cooled condenser and the battery. Among them, the water that has absorbed the heat of the high-pressure refrigerant passes through the battery via the water circulation loop, so that the battery stores heat;

[0011] The water-cooled condenser is also connected to the cooling device. Among them, the high-pressure refrigerant output from the water-cooled condenser is input into the cooling device. The cooling device is used to generate cooling capacity based on the high-pressure refrigerant. The cooling capacity passes through the battery via the water circulation loop, so that the battery stores the cooling capacity.

[0012] In the first aspect of the present application, through the water circulation loop, it is possible to utilize the advantages of the large volume and high heat capacity of the battery itself to store cooling capacity and heat. In this way, on the one hand, it can increase the available cooling capacity / heat in the passenger compartment and avoid the problem of insufficient cooling capacity / heat when using the battery cooling / heating simultaneously, further improving the user experience. On the other hand, by increasing the available cooling capacity / heat of the battery, it can meet the fast charging thermal management requirements of 3C / 6C or even higher rates, greatly reducing the charging time. At the same time, it can meet the battery cooling requirements of high-power output of sports cars, ensuring power performance and battery safety. On the other hand, through the control of the battery cooling capacity / heat by the integrated water valve, the battery can be kept at a comfortable temperature for a long time, improving the battery life, reducing the risk of out-of-control, and meeting the requirements of the whole life cycle health management of the battery.

[0013] Therefore, compared with the prior art, the system of the present application has both extremely low cost and comprehensive functions, has good expansibility, can be applied to all new energy vehicle models with different market positions, and realizes the platformization of all vehicle models.

[0014] In addition, the present application can use the compressor and the self-heating means of the battery to replace the PTC, thereby reducing the components of the thermal management system and greatly reducing the cost of the vehicle thermal management system.

[0015] In the embodiment of the present application, as an optional implementation manner, a first expansion valve is further included. The first expansion valve is connected to the water-cooled condenser and is also connected to the cooling device, and is used to convert the high-pressure refrigerant into the low-pressure refrigerant and input the low-pressure refrigerant into the cooling device, so that the cooling device generates the cooling capacity based on the low-pressure refrigerant.

[0016] In this optional implementation manner, through the first expansion valve, the high-pressure refrigerant can be converted into the low-pressure refrigerant and the low-pressure refrigerant can be input into the cooling device, so that the cooling device generates the cooling capacity based on the low-pressure refrigerant.

[0017] In an embodiment of the present application, as an alternative implementation, an evaporator and a second expansion valve are further included. The second expansion valve is communicated with the water-cooled condenser and the evaporator. The second expansion valve is configured to convert the high-pressure refrigerant into the low-pressure refrigerant and input the low-pressure refrigerant into the evaporator, so that the evaporator generates the cooling capacity based on the low-pressure refrigerant.

[0018] In this alternative implementation, through the second expansion valve, the high-pressure refrigerant can be converted into the low-pressure refrigerant and input into the evaporator, so that the evaporator generates the cooling capacity based on the low-pressure refrigerant.

[0019] In an embodiment of the present application, as an alternative implementation, an electric drive power supply is further included. The water circulation loop passes through the electric drive power supply via the integrated water valve and is configured to absorb the heat generated during the operation of the electric drive power supply.

[0020] In this alternative implementation, by passing the water circulation loop through the electric drive power supply via the integrated water valve, the heat generated during the operation of the electric drive power supply can be absorbed, increasing the available heat.

[0021] In an embodiment of the present application, as an alternative implementation, a radiator is further included. The water circulation loop passes through the radiator via the integrated water valve and is configured to exchange energy with the outside.

[0022] In this alternative implementation, by passing the water circulation loop through the radiator via the integrated water valve, energy can be exchanged with the outside.

[0023] In an embodiment of the present application, as an alternative implementation, a heater core is further included. The water circulation loop passes through the heater core to provide heat for the heater core.

[0024] In this alternative implementation, by passing the water circulation loop through the heater core, heat can be provided for the heater core.

[0025] In an embodiment of the present application, as an alternative implementation, the compressor is a fixed-displacement compressor or a multi-step compressor.

[0026] In this alternative implementation, using a fixed-displacement compressor or a multi-step compressor can reduce power consumption and cost.

[0027] In an embodiment of the present application, as an alternative implementation, a vehicle-mounted refrigerator is further included. Among them, the cooling capacity passes through the vehicle-mounted refrigerator via the water circulation loop and is stored in the vehicle-mounted refrigerator in the form of flowable ice.

[0028] In this alternative embodiment, through the water circulation loop, the cooling capacity can be stored in the vehicle-mounted refrigerator in the form of flow ice.

[0029] In an embodiment of the present application, as an alternative embodiment, the integrated water valve is an electromagnetic valve.

[0030] A second aspect of the present application discloses a new energy vehicle, which includes the integrated thermal management system of the first aspect of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0032] Figure 1 is a schematic framework diagram of an integrated thermal management system disclosed in an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

[0034] Embodiment

[0035] Please refer to Figure 1 , Figure 1 which is a schematic framework diagram of an integrated thermal management system disclosed in an embodiment of the present application. As Figure 1 shown, the integrated thermal management system of the embodiment of the present application includes: a compressor, a water-cooled condenser, a cooling device, and an integrated water valve. Among them, the compressor is connected to the water-cooled condenser. The compressor is used to convert low-pressure refrigerant into high-pressure refrigerant and transmit the high-pressure refrigerant to the water-cooled condenser. The water-cooled condenser is used to absorb the heat of the high-pressure refrigerant. The water-cooled condenser is also connected to the integrated water valve, and the water circulation loop passes through the integrated water valve, the water-cooled condenser, and the battery. Among them, the water that has absorbed the heat of the high-pressure refrigerant passes through the battery through the water circulation loop, so that the battery stores heat.

[0036] Furthermore, the water-cooled condenser is also connected to the cooling device. Among them, the high-pressure refrigerant output from the water-cooled condenser is input into the cooling device. The cooling device is used to generate cooling capacity based on the high-pressure refrigerant. The cooling capacity passes through the battery through the water circulation loop, so that the battery stores the cooling capacity.

[0037] In the embodiments of the present application, through the water circulation loop, the advantages of large volume and high heat capacity of the battery itself can be utilized to store cold and heat. In this way, on the one hand, the available cold / heat in the passenger compartment can be increased, avoiding the problem of insufficient cold / heat when used simultaneously with battery cooling / heating, and further improving the user experience. On the other hand, by increasing the available cold / heat of the battery, the fast charge thermal management requirements of 3C / 6C or even higher rates can be met, significantly reducing the charging time. At the same time, the battery cooling requirements for the large power output of sports cars can be satisfied, ensuring power performance and battery safety. On the other hand, through the control of the battery cold / heat by integrating the water valve, the battery can be kept at a comfortable temperature for a long time, improving the battery life, reducing the risk of thermal runaway, and meeting the requirements of the battery's full life cycle health management.

[0038] Therefore, compared with the prior art, the system of the present application has both extremely low cost and comprehensive functions, has good expandability, can be applied to all new energy vehicle models with different market positions, and realizes the platformization of all vehicle models.

[0039] In addition, the present application can use the compressor and the battery self-heating means to replace the PTC, thereby reducing the components of the thermal management system and significantly reducing the cost of the vehicle thermal management system.

[0040] The technical effects achieved by the embodiments of the present application are further described below in combination with the usage scenarios.

[0041] Scenario Example 1: In the high-temperature scenario in summer, during a charge-discharge cycle of a battery, let the cold be stored in the battery for a long time. When starting super-fast charging at a rate of 3C / 6C or even higher, the battery is at a relatively low temperature. Use the cold stored in the battery to offset part of the heat generated by the battery, realizing the cross-time transfer of the heat load, and ensuring that the battery cooling requirements for the entire process of super-fast charging can be covered under the maximum capacity of the conventional air conditioner.

[0042] Scenario Example 2: In a high-temperature environment, sports cars or the SPORT+ mode have extremely high requirements for the power performance of the whole vehicle, requiring the battery to have a very high instantaneous output power and extremely high instantaneous heat generation. Using the battery cold storage strategy, the battery is maintained in a comfortable temperature range (such as 25°C). By offsetting part of the heat generated by the battery with the stored cold, the duration of the maximum power output can be extended, improving the user experience.

[0043] Scenario Example 3: In the high-temperature scenario in summer, the battery stores cold and is maintained in a comfortable temperature range (such as 25°C). When the user has a cooling demand for the passenger compartment, there is no need to consider battery cooling, avoiding the double-working condition of the passenger compartment + battery cooling. The maximum cooling capacity can be given to the passenger compartment, accelerating the cooling speed of the passenger compartment and improving the user experience.

[0044] Scenario Example 4: In a low-temperature environment, during a battery charge and discharge cycle, heat is stored in the battery for a long time, and the battery is kept in a comfortable temperature range. This, combined with battery insulation, can increase the battery discharge capacity while reducing the power consumption required for battery heating, thereby increasing the vehicle's winter driving range and improving user experience. At the same time, keeping the battery in a comfortable temperature range can avoid life damage and safety risks caused by low-temperature charging and discharging.

[0045] Scenario Example 5: In a low-temperature environment, since the battery stores heat, when the user cold-starts the vehicle, a heat pump can be used to absorb the heat stored in the battery, speeding up the heating of the passenger compartment and improving the user experience;

[0046] Scenario Example 6: In low-temperature environments, heat pumps can be used to absorb the waste heat from motor / electronic control / power supply modules: the waste heat at a relatively low temperature is used to heat the battery or the passenger compartment, thereby reducing energy consumption. At the same time, due to the excellent temperature-raising effect of the heat pump, a high-temperature heat source can be quickly provided to the battery or the passenger compartment, thereby improving the user experience.

[0047] Scenario Example 7: In a low-temperature environment, if the user does not plan to use the car for a long time after getting off the car, the heat pump can be used to absorb the heat from the passenger compartment and store it in the battery to reduce energy consumption. At the same time, it can prevent the glass inside the car from frosting when the user uses the car next time due to the large temperature difference between the inside and outside of the car.

[0048] Scenario Example 8: Under normal temperature conditions, the battery can be kept in a comfortable temperature range through heat exchange with the environment through a radiator, thereby increasing the battery life.

[0049] Scenario Example 9: Under normal temperature conditions, if the user has heating needs, the motor / electronic control waste heat can be used to directly heat the passenger compartment to reduce energy consumption;

[0050] Scenario Example 10: After charging is completed, cold / heat storage is completed, and battery insulation is used to reduce battery thermal management power consumption during driving, increase the available power during driving, and the vehicle is in good condition after charging is completed, improving the user's on-board experience;

[0051] Scenario Example 11: In any environment, the heat / cold storage and transfer strategy is used to keep the battery in a comfortable temperature range, achieve battery health management throughout its life cycle, increase battery life, vehicle service life, and reduce safety risks;

[0052] In an embodiment of the present application, as an optional implementation, the system of the embodiment of the present application also includes a first expansion valve, which is connected to the water-cooled condenser and to the cooling device, and is used to convert the high-pressure refrigerant into a low-pressure refrigerant and input the low-pressure refrigerant into the cooling device, so that the cooling device generates cooling based on the low-pressure refrigerant.

[0053] In this alternative embodiment, the high-pressure refrigerant can be converted into a low-pressure refrigerant by the first expansion valve, and the low-pressure refrigerant is input into the cooling device, so that the cooling device generates cooling capacity based on the low-pressure refrigerant.

[0054] In an embodiment of the present application, as an alternative embodiment, the system of the embodiment of the present application further includes an evaporator and a second expansion valve. The second expansion valve is communicated with the water-cooled condenser and the evaporator. The second expansion valve is used to convert the high-pressure refrigerant into a low-pressure refrigerant and input the low-pressure refrigerant into the evaporator, so that the evaporator generates cooling capacity based on the low-pressure refrigerant.

[0055] In this alternative embodiment, the high-pressure refrigerant can be converted into a low-pressure refrigerant by the second expansion valve, and the low-pressure refrigerant is input into the evaporator, so that the evaporator generates cooling capacity based on the low-pressure refrigerant.

[0056] In an embodiment of the present application, as an alternative embodiment, it further includes an electric drive power supply. The water circulation loop passes through the electric drive power supply through an integrated water valve and is used to absorb the heat generated when the electric drive power supply works.

[0057] In this alternative embodiment, by passing the water circulation loop through the electric drive power supply through an integrated water valve, the heat generated when the electric drive power supply works can be absorbed, increasing the available heat.

[0058] In an embodiment of the present application, as an alternative embodiment, it further includes a radiator. The water circulation loop passes through the radiator through an integrated water valve and is used for energy exchange with the outside world.

[0059] In this alternative embodiment, by passing the water circulation loop through the radiator through an integrated water valve, energy exchange with the outside world can be achieved.

[0060] In an embodiment of the present application, as an alternative embodiment, it further includes a heater core. The water circulation loop passes through the heater core to provide heat for the heater core.

[0061] In this alternative embodiment, by passing the water circulation loop through the heater core, heat can be provided for the heater core.

[0062] In an embodiment of the present application, as an alternative embodiment, the compressor is a fixed displacement compressor or a stepped compressor.

[0063] In this alternative embodiment, using a fixed displacement compressor or a stepped compressor can reduce power consumption and cost.

[0064] In an embodiment of the present application, as an alternative embodiment, it further includes a vehicle-mounted refrigerator. Among them, the cooling capacity passes through the vehicle-mounted refrigerator through the water circulation loop and is stored in the vehicle-mounted refrigerator in the form of flowable ice.

[0065] In this alternative embodiment, through the water circulation loop, the cooling capacity can be stored in the vehicle-mounted refrigerator in the form of flowing ice.

[0066] In the embodiments of the present application, as an alternative embodiment, the integrated water valve is an electromagnetic valve.

[0067] In addition, the embodiments of the present application also disclose a new energy vehicle, which includes the integrated thermal management system of the embodiments of the present application.

[0068] In the embodiments provided by the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are only illustrative. For example, the division of units is only a logical function division, and there may be other division methods in actual implementation. For another example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some communication interfaces, and the indirect couplings or communication connections of devices or units can be in electrical, mechanical or other forms.

[0069] In addition, the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they can be located in one place, or they can be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0070] Furthermore, in each embodiment of the present application, the various functional modules can be integrated together to form an independent part, or each module can exist alone, or two or more modules can be integrated to form an independent part.

[0071] It should be noted that if the function is implemented in the form of a software function module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, or part of this technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: USB flash drives, mobile hard disks, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical discs and other various media that can store program codes.

[0072] In this document, relational terms such as first and second are used solely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0073] The above description is only for the embodiments of this application and is not intended to limit the protection scope of this application. For those skilled in the art, this application may have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of this application shall be included within the protection scope of this application.

Claims

1. An integrated thermal management system, characterized in that, it includes: a compressor, a water-cooled condenser, a cooling device, and an integrated water valve; the compressor is connected to the water-cooled condenser, the compressor is used to convert low-pressure refrigerant into high-pressure refrigerant and transmit the high-pressure refrigerant to the water-cooled condenser, the water-cooled condenser is used to absorb the heat of the high-pressure refrigerant, the water-cooled condenser is also connected to the integrated water valve, and the water circulation loop passes through the integrated water valve, the water-cooled condenser and the battery, wherein, the water that has absorbed the heat of the high-pressure refrigerant passes through the battery through the water circulation loop, so that the battery stores heat; the water-cooled condenser is also connected to the cooling device, wherein, the high-pressure refrigerant output from the water-cooled condenser is input into the cooling device, the cooling device is used to generate cold based on the high-pressure refrigerant, and the cold passes through the battery through the water circulation loop, so that the battery stores cold.

2. The integrated thermal management system according to claim 1, characterized in that, it further includes a first expansion valve, the first expansion valve is connected to the water-cooled condenser and is connected to the cooling device, and is used to convert the high-pressure refrigerant into the low-pressure refrigerant and input the low-pressure refrigerant into the cooling device, so that the cooling device generates the cold based on the low-pressure refrigerant.

3. The integrated thermal management system according to claim 2, characterized in that, it further includes an evaporator and a second expansion valve, the second expansion valve is connected to the water-cooled condenser and is connected to the evaporator, the second expansion valve is used to convert the high-pressure refrigerant into the low-pressure refrigerant and input the low-pressure refrigerant into the evaporator, so that the evaporator generates the cold based on the low-pressure refrigerant.

4. The integrated thermal management system according to claim 3, characterized in that, it further includes an electric drive power supply, and the water circulation loop passes through the electric drive power supply through the integrated water valve, and is used to absorb the heat generated when the electric drive power supply works.

5. The integrated thermal management system according to claim 3, characterized in that, it further includes a radiator, and the water circulation loop passes through the radiator through the integrated water valve, and is used to exchange energy with the outside world.

6. The integrated thermal management system according to claim 1, characterized in that, it further includes a heater core, and the water circulation loop passes through the heater core to provide heat for the heater core.

7. The integrated thermal management system according to claim 1, characterized in that, the compressor is a fixed displacement compressor or a stepped compressor.

8. The integrated thermal management system according to claim 1, characterized in that, it further includes a vehicle-mounted refrigerator, wherein, the cold passes through the vehicle-mounted refrigerator through the water circulation loop and is stored in the vehicle-mounted refrigerator in the form of flowing ice.

9. In the integrated thermal management system according to claim 1, the integrated water valve is an electromagnetic valve.

10. A new energy vehicle, characterized in that, the new energy vehicle includes the integrated thermal management system according to any one of claims 1-9.

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