Thermal management system, control method, device, equipment, vehicle, medium and product

Abstract

The invention relates to a heat management system, a control method, a control device, equipment, a vehicle, a medium and a product, and relates to the technical field of vehicles, the system comprises a heat source flow path, a multi-way valve and a plurality of heating flow paths, the heat source flow path is used for transmitting heat generated by heat source parts on the vehicle, and the multiple heating flow paths are used for transmitting heat generated by heat source parts on the vehicle. And the heat source flow path is used for releasing heat transmitted by the heat source flow path to a target object on the vehicle, the heat source flow path and the multiple heating flow paths are connected with the multi-way valve, and any heating flow path can be directly communicated with the heat source flow path through the multi-way valve. Through the heat source flow path and the heating flow path which are connected with the multi-way valve, heat generated by the heat source component can be directly transmitted to the heating flow path and released to the target object on the vehicle, so that the waste heat utilization efficiency of the whole vehicle is improved, and the energy consumption of the whole vehicle is reduced.

Description

Technical Field

[0001] This disclosure relates to the field of vehicle technology, and in particular to a thermal management system, control method, device, equipment, vehicle, medium, and product. Background Technology

[0002] With the development of electric vehicle technology, range anxiety has gradually become a focus of market and product development. Under low-temperature conditions, due to the chemical characteristics of the battery, the overall vehicle range is significantly reduced. The thermal management system still needs to provide heat to the battery and passenger compartment, which generates considerable energy consumption during this process, directly affecting the overall vehicle range and causing range anxiety.

[0003] In related technologies, utilizing waste heat from the entire vehicle can reduce thermal management consumption and improve overall vehicle energy efficiency. However, the efficiency of waste heat utilization from the entire vehicle is not high. Summary of the Invention

[0004] To overcome the problems existing in related technologies, this disclosure provides a thermal management system, control method, device, equipment, vehicle, medium and product. Through the heat source flow path and heating flow path connected to the multi-way valve, the heat generated by the heat source component can be directly transferred to the heating flow path and released to the target object on the vehicle, so as to improve the waste heat utilization efficiency of the whole vehicle and reduce the energy consumption of the whole vehicle.

[0005] According to a first aspect of the present disclosure, a thermal management system for a vehicle is provided, comprising: A heat source flow path is used to transfer heat generated by heat source components on the vehicle. Multiple heating flow paths are used to release the heat transmitted by the heat source flow paths to the target object on the vehicle; The multi-way valve 2 is connected to the heat source flow path and multiple heating flow paths, and any heating flow path can be directly connected to the heat source flow path through the multi-way valve 2.

[0006] Optionally, the plurality of heating flow paths include a first heating flow path, which includes a heat exchange flow path and a heat absorption flow path. The heat exchange flow path uses the same cooling medium as the heat source flow path, and the heat absorption flow path uses a different cooling medium than the heat source flow path. The heat exchange flow path can be directly connected to the heat source flow path through the multi-way valve 2; The heat absorption flow path and the heat exchange flow path exchange heat through the first heat exchanger 41. The heat absorption flow path is used to release the heat absorbed from the heat exchange flow path to the corresponding target object on the vehicle.

[0007] Optionally, the cooling medium in the heat absorption flow path is a refrigerant, and the heat absorption flow path includes a first pipe of the first heat exchanger 41, a compressor 42, and a condenser 43 connected in series to form a loop; The thermal management system further includes a refrigerant branch, which is connected in parallel with the first pipeline of the first heat exchanger 41. The refrigerant branch is used to be turned on when the operating state of the compressor 42 meets preset conditions, so as to increase the amount of refrigerant returning to the compressor 42.

[0008] Optionally, the plurality of heating flow paths includes a second heating flow path, the second heating flow path includes a radiator 6, the refrigerant branch includes a heat exchanger 5, and the radiator 6 and the heat exchanger 5 are arranged opposite to each other; When the refrigerant branch is open, the heat exchanger 5 heats the refrigerant in the refrigerant branch by absorbing the heat emitted by the radiator 6, and then transfers the heated refrigerant to the compressor 42.

[0009] Optionally, the thermal management system further includes a heating air core heating flow path; The heating flow path of the heating core and the heat absorption flow path exchange heat through the second heat exchanger 72. The heating flow path of the heating core is used to release the heat absorbed from the heat absorption flow path to the passenger compartment of the vehicle through the heating core 71.

[0010] Optionally, the thermal management system further includes a controller, which is used to control the connection or disconnection of the second heating flow path and the heat source flow path, as well as the connection or disconnection of the refrigerant branch and the heat absorption flow path. The controller can control the connection between the second heating flow path and the heat source flow path when it is determined that the duration of heat exchange between the heat absorption flow path and the heat exchange flow path is greater than the target duration. After a first preset time period, the refrigerant branch is connected to the heat absorption flow path so that the refrigerant branch absorbs the heat dissipated by the radiator 6 through the heat exchanger 5 and the refrigerant in the refrigerant branch flows back to the compressor 42. After a second preset time has elapsed since the refrigerant branch and the heat absorption flow path are connected, the refrigerant branch and the heat absorption flow path are cut off.

[0011] Optionally, the heat source flow path includes the heat source flow path of the electric drive assembly 1 of the vehicle, for transmitting the heat generated by the electric drive assembly 1; the plurality of heating flow paths include the heating flow path of the battery 3 of the vehicle, and the air conditioning heating flow path; or; The heat source flow path includes the heat source flow path of the vehicle's battery 3, which is used to transfer the heat generated by the battery 3. The plurality of heating flow paths include the vehicle's external heat dissipation flow path and the air conditioning heating flow path.

[0012] According to a second aspect of the present disclosure, a compressor start-stop control method is provided, the method being applied to the thermal management system described in the first aspect. The method includes: Determine the temperature difference between the heating medium temperature and the target temperature in the heating flow path of the warm air core; When the temperature difference is greater than or equal to a preset temperature threshold, a compressor start-stop control strategy is executed, which is used to reduce the temperature of the heating medium.

[0013] Optionally, the heat source flow path includes at least one of the heat source flow path of the vehicle's battery and the heat source flow path of the vehicle's electric drive assembly, the heat absorption flow path includes a compressor, and the execution of the compressor start-stop control strategy includes: A first speed threshold is determined based on the temperature of the cooling medium in the heat source flow path of the battery and / or the temperature of the cooling medium in the heat source flow path of the electric drive assembly; Control the compressor speed to the first speed threshold, and then control the compressor to stop after a preset time. When the temperature of the heating medium in the heating flow path of the heating core is less than or equal to the target temperature, the compressor is controlled to start.

[0014] Optionally, The execution of the compressor start / stop control strategy includes: The second rotational speed threshold is determined based on the temperature of the cooling medium and / or air in the heat source flow path; Control the compressor speed to the second speed threshold, and after a preset time, control the compressor to stop. When the temperature of the heating medium in the heating flow path of the heating core is less than or equal to the target temperature, the compressor is controlled to start.

[0015] According to a third aspect of the present disclosure, a compressor start-stop control device is provided, comprising: The determination module is configured to determine the temperature difference between the temperature of the heating medium in the heating flow path of the warm air core and the target temperature; The execution module is configured to execute a compressor start-stop control strategy when the temperature difference is greater than or equal to a preset temperature threshold. The compressor start-stop control strategy is used to reduce the temperature of the heating medium.

[0016] According to a fourth aspect of the present disclosure, an electronic device is provided, comprising: processor; Memory used to store processor-executable instructions; The processor is configured to execute the steps of the compressor start-stop control method provided in the second aspect of this disclosure.

[0017] According to a fifth aspect of the present disclosure, a vehicle is provided, including a thermal management system for a vehicle provided in the first aspect of the present disclosure, and an electronic device provided in the fourth aspect of the present disclosure.

[0018] According to a sixth aspect of the present disclosure, a computer-readable storage medium is provided that stores computer program instructions thereon, which, when executed by a processor, implement the steps of the compressor start-stop control method provided in the second aspect of the present disclosure.

[0019] According to a seventh aspect of the present disclosure, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps of the compressor start-stop control method provided in the second aspect of the present disclosure.

[0020] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects: The vehicle's thermal management system includes a heat source flow path, a multi-way valve, and multiple heating flow paths. The heat source flow path transfers heat generated by the vehicle's heat source components, while the multiple heating flow paths release the heat transferred from the heat source flow path to target objects on the vehicle. Both the heat source flow path and the multiple heating flow paths are connected to the multi-way valve, allowing any heating flow path to be directly connected to the heat source flow path via the multi-way valve. Through the heat source flow path and heating flow paths connected to the multi-way valve, heat generated by the heat source components can be directly transferred to the heating flow paths and released to target objects on the vehicle, thereby improving the overall waste heat utilization efficiency of the vehicle and reducing its overall energy consumption.

[0021] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0022] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0023] Figure 1 This is a schematic diagram illustrating a thermal management system for a vehicle according to an exemplary embodiment.

[0024] Figure 2 This is a flowchart illustrating a compressor start-stop control method according to an exemplary embodiment.

[0025] Figure 3 This is a flowchart illustrating the steps of a thermal management method according to an exemplary embodiment.

[0026] Figure 4 This is a schematic diagram of a compressor start-stop control device according to an exemplary embodiment.

[0027] Figure 5 This is a block diagram illustrating an electronic device according to an exemplary embodiment.

[0028] Explanation of reference numerals in the attached figures 1. Electric drive assembly; 2. Multi-way valve; 3. Battery; 41. First heat exchanger; 42. Compressor; 43. Condenser; 44. Gas-liquid separator; 5. Heat exchanger; 6. Radiator; 71. Heater core; 72. Second heat exchanger; 73. Coolant heater. Detailed Implementation

[0029] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0030] The embodiments described in the following examples of this disclosure are not representative of all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0031] It should be noted that all actions involving the acquisition of signals, information, or data in this disclosure are carried out in compliance with the relevant data protection laws and policies of the country where the location is situated, and with authorization from the owner of the relevant device.

[0032] With the development of electric vehicle technology, range anxiety has gradually become a focus of market and product development. Under low-temperature conditions, due to the chemical characteristics of the battery, the overall vehicle range is significantly reduced. The thermal management system still needs to provide heat to the battery and passenger compartment, which generates considerable energy consumption during this process, directly affecting the overall vehicle range and causing range anxiety.

[0033] Utilizing waste heat from the entire vehicle can reduce thermal management consumption, resulting in better overall vehicle energy efficiency. However, in related technologies, electric drive waste heat utilization systems often involve numerous series components or indirect heat exchange links, leading to significant heat waste, inefficient heating, and decreased electric drive efficiency. In severe cases, this can reduce electric drive efficiency and increase overall vehicle power consumption, ultimately proving counterproductive.

[0034] Based on the above-mentioned technical problems, this disclosure provides a thermal management system, control method, device, equipment, vehicle, medium and product. Through the heat source flow path and heating flow path connected to the multi-way valve, the heat generated by the heat source component can be directly transferred to the heating flow path and released to the target object on the vehicle, so as to improve the waste heat utilization efficiency of the whole vehicle and reduce the energy consumption of the whole vehicle.

[0035] Figure 1 This is a schematic diagram illustrating a vehicle thermal management system according to an exemplary embodiment. Figure 1 As shown, it may include: Heat source flow path, used to transfer heat generated by heat source components on the vehicle; Multiple heating flow paths are used to release the heat transferred from the heat source flow path to the target object on the vehicle; Multi-way valve 2 is connected to the heat source flow path and multiple heating flow paths. Any heating flow path can be directly connected to the heat source flow path through multi-way valve 2.

[0036] In this embodiment, when the target object on the vehicle needs heat, such as when the air conditioning heater is turned on in the passenger compartment, the heat generated by the heat source component can be directly transferred to the heating flow path and released to the target object on the vehicle through the heat source flow path and heating flow path connected to the multi-way valve 2, so as to improve the waste heat utilization efficiency of the whole vehicle, reduce the energy consumption of the whole vehicle, and ensure that the heat of the electric drive or battery is not wasted, so that the electric drive or battery is in the optimal efficiency range.

[0037] In one possible implementation, the plurality of heating flow paths include a first heating flow path, which includes a heat exchange flow path and a heat absorption flow path. The cooling medium in the heat exchange flow path is the same as that in the heat source flow path, and the cooling medium in the heat absorption flow path is different from that in the heat source flow path. The heat exchange flow path can be directly connected to the heat source flow path through the multi-way valve 2; The heat absorption flow path and the heat exchange flow path exchange heat through the first heat exchanger 41. The heat absorption flow path is used to release the heat absorbed from the heat exchange flow path to the corresponding target object on the vehicle.

[0038] In this embodiment, the cooling medium in the heat exchange path can be cooling water, the cooling medium in the heat source path can be cooling water, and the cooling medium in the heat absorption path can be refrigerant. The heat exchange path can be directly connected to the heat source path via a multi-way valve 2, so that the cooling medium that has absorbed heat in the heat source path can be introduced into the heat exchange path through the multi-way valve 2. In the heat exchange path, heat is exchanged with the cooling medium in the heat absorption path through the first heat exchanger 41, thereby transferring heat to the heat absorption path. The heat absorption path then releases the heat to the corresponding target object on the vehicle.

[0039] In one possible implementation, the cooling medium in the heat absorption flow path is a refrigerant, and the heat absorption flow path includes a first pipe of a first heat exchanger 41 connected in series to form a loop, a compressor 42, and a condenser 43. The thermal management system also includes a refrigerant branch, which is connected in parallel with the first pipeline of the first heat exchanger 41. The refrigerant branch is used to be turned on when the operating state of the compressor 42 meets preset conditions, so as to increase the amount of refrigerant returning to the compressor 42.

[0040] In this embodiment, the heat absorption path may include a condenser 43 to release heat into the target space, which is then transported to the target object within the vehicle's passenger compartment via a fan and air ducts, enabling direct utilization of waste heat. The heat absorption path may also include a compressor 42, a gas-liquid separator 44, and a battery 3 electronic expansion valve. The compressor 42 is located on the input pipeline to provide kinetic energy for the refrigerant flow. The gas-liquid separator 44 is located between the first heat exchanger 41 and the compressor 42 to separate the refrigerant after heat exchange into gas and liquid components. The battery 3 electronic expansion valve is located between the first heat exchanger 41 and the condenser 43 to control the flow rate of the refrigerant output from the condenser 43 into the first heat exchanger 41, thereby controlling the heat exchange capacity based on the refrigerant flow rate.

[0041] The heat absorption flow path includes a first pipe of a first heat exchanger 41 connected in series to form a loop. A refrigerant branch is connected in parallel with the first pipe of the first heat exchanger 41, enabling the refrigerant output from the condenser 43 to be input into the refrigerant branch and output back to the compressor 42. Specifically, a one-way valve and a switching valve connected in parallel with the one-way valve are provided on the refrigerant branch. The one-way valve allows refrigerant to flow from the compressor 42 side to the condenser 43 side. When the compressor 42's operating state meets preset conditions, the refrigerant branch can be opened to increase the amount of refrigerant returning to the compressor 42 and the amount of compressor oil. Specifically, the switching valve connected in parallel with the one-way valve can be opened to connect the refrigerant branch and the heat absorption flow path.

[0042] In one possible implementation, the plurality of heating flow paths includes a second heating flow path, the second heating flow path includes a radiator 6, the refrigerant branch includes a heat exchanger 5, and the radiator 6 and the heat exchanger 5 are arranged opposite to each other. When the refrigerant branch is open, the heat exchanger 5 heats the refrigerant in the refrigerant branch by absorbing the heat emitted by the radiator 6, and then transfers the heated refrigerant to the compressor 42.

[0043] In this embodiment, the multiple heating flow paths may further include a second heating flow path, which includes a radiator 6. The cooling medium in the heat source flow path can reach the second heating flow path through the multi-way valve 2 and dissipate heat through the radiator 6 in the second heating flow path. This allows excess heat to be released outside the vehicle. A fan may be installed at the radiator 6 to accelerate airflow and improve the heat dissipation effect.

[0044] The radiator 6 can be installed at the air intake grille, opposite to the heat exchanger 5. When the refrigerant branch is open, the heat exchanger 5 absorbs the heat emitted by the radiator 6 to heat the refrigerant in the refrigerant branch, and then transfers the heated refrigerant to the compressor 42. This allows the refrigerant to flow back to the heat absorption path, achieving the effect of returning oil and refrigerant, and also realizing partial heat recovery, thus achieving dual-loop heat absorption and preventing heat loss during the return of oil and refrigerant.

[0045] In one possible implementation, the thermal management system also includes a warm air core heating flow path; The heating flow path and the heat absorption flow path of the heater core exchange heat through the second heat exchanger 72. The heating flow path of the heater core is used to release the heat absorbed from the heat absorption flow path to the passenger compartment of the vehicle through the heater core 71.

[0046] In this embodiment, the thermal management system also includes a warm air core heating flow path, which can also utilize waste heat to heat the passenger compartment. Specifically, the warm air core heating flow path and the heat absorption flow path exchange heat through a second heat exchanger 72. The heat from the heat source flow path passes through the heat exchange flow path, through the first heat exchanger 41 to the heat absorption flow path, and then through the second heat exchanger 72 to transfer the heat to the warm air core heating flow path. The warm air flow path may include a warm air core 71, through which heat is released to the target space, and then transported to the location of the target object in the passenger compartment of the vehicle through a fan and air supply ducts, so as to realize the direct utilization of waste heat.

[0047] In one possible implementation, the thermal management system further includes a controller for controlling the connection or disconnection of the second heating flow path and the heat source flow path, as well as the connection or disconnection of the refrigerant branch and the heat absorption flow path. The controller can control the connection between the second heating flow path and the heat source flow path when it is determined that the duration of heat exchange between the heat absorption flow path and the heat exchange flow path is greater than the target duration. After a first preset time, the refrigerant branch is connected to the heat absorption flow path so that the refrigerant branch absorbs the heat emitted by the radiator 6 through the heat exchanger 5 and the refrigerant in the refrigerant branch flows back to the compressor 42. After a second preset time has elapsed since the refrigerant branch and the heat absorption flow path were connected, the refrigerant branch and the heat absorption flow path are cut off.

[0048] In this embodiment, when the duration of heat exchange between the heat absorption path and the heat exchange path exceeds the target duration, the high refrigerant temperature leads to high pressure in the heat absorption path. Relying solely on the electronic expansion valve of battery 3 to control the refrigerant flow is insufficient to resolve the high pressure issue in the heat absorption path. Even with valves closed in adjacent pipelines, refrigerant and compressor oil from the heat absorption path can seep into other adjacent pipelines, resulting in oil and refrigerant shortages in the heat absorption path. This poses a risk of oil return to compressor 42.

[0049] In one possible implementation, before controlling the connection between the second heating flow path and the heat source flow path, the temperature difference between the heating medium temperature in the heating flow path of the warm air core and the target temperature can be determined first. If the temperature difference between the refrigerant temperature in the heat absorption flow path and the target temperature is less than a preset temperature threshold, the refrigerant temperature is within an acceptable range, and there is no need to cool down the refrigerant temperature. That is, there is no need to control the start and stop of the compressor 42. The connection between the second heating flow path and the heat source flow path can be controlled so that the compressor start and stop times and the return oil and refrigerant times are staggered.

[0050] The controller can control the multi-way valve 2 to connect the second heating flow path with the heat source flow path. After the second heating flow path and the heat source flow path have been connected for a first preset time, the controller controls the refrigerant branch to connect with the heat absorption flow path. This allows the refrigerant branch to absorb heat from the radiator 6 through the heat exchanger 5, while simultaneously returning the refrigerant in the refrigerant branch to the compressor 42, achieving both heat absorption and refrigerant return. The preset temperature threshold can be 3℃, the target time can be 20 minutes, the first preset time can be 20 seconds, and the second preset time can be 1 minute. After the refrigerant branch and the heat absorption flow path are shut off, the controller can also shut off the second heating circuit and the multi-way valve 2 to prevent heat loss.

[0051] In one possible implementation, the heating core heating flow path can also be connected to the multi-way valve 2. The heating core heating flow path also includes a coolant heater 73, which can heat the cooling medium in the heating core heating flow path. When the temperature of the vehicle's battery 3 is low, the heating core heating flow path can be connected to the vehicle's battery 3 heating flow path through the multi-way valve 2 to heat the battery 3.

[0052] In one possible implementation, the heat source flow path includes a heat source flow path of the electric drive assembly 1 of the vehicle for transferring the heat generated by the electric drive assembly 1, and the plurality of heating flow paths include a heating flow path of the vehicle's battery 3 and an air conditioning heating flow path; or; The heat source flow path includes the heat source flow path of the vehicle's battery 3, which is used to transfer the heat generated by the battery 3. The multiple heating flow paths include the vehicle's external heat dissipation flow path and the air conditioning heating flow path.

[0053] In this embodiment, the battery 3 can provide a heat source and also serve as a heating device. When the electric drive assembly 1 can provide heat, for example, when the temperature of the battery 3 is lower than a first preset temperature and the temperature of the electric drive assembly 1 is higher than a second preset temperature, the heat source flow path includes the heat source flow path of the vehicle's electric drive assembly 1, used to transfer the heat generated by the electric drive assembly 1. Multiple heating flow paths include the heating flow path of the vehicle's battery 3 and the air conditioning heating flow path, and may also include the vehicle's external heat dissipation flow path, so as to use the waste heat of the electric drive assembly 1 to heat the battery 3 and the air conditioning heating flow path. The waste heat of the electric drive assembly 1 can also be dissipated directly through the vehicle's external heat dissipation flow path. The air conditioning heating flow path may include a heat absorption flow path and a heater core heating flow path.

[0054] When the electric drive assembly 1 can provide heat, for example, when the temperature of the battery 3 is higher than a first preset temperature and the temperature of the electric drive assembly 1 is lower than a second preset temperature, the heat source flow path includes the heat source flow path of the vehicle's battery 3. Multiple heating flow paths include the vehicle's external heat dissipation flow path and the air conditioning heating flow path. The heat from the battery 3 can be directly dissipated through the vehicle's external heat dissipation flow path, or the heat from the battery 3 can be supplied to the air conditioning heating flow path.

[0055] Figure 2 This is a flowchart illustrating a compressor start-stop control method according to an exemplary embodiment, such as... Figure 2 As shown, applied to the above-mentioned thermal management system, the method includes: In step S201, the temperature difference between the heating medium in the heating flow path of the warm air core and the target temperature is determined.

[0056] In this embodiment, the heating medium in the heating flow path of the warm air core can be the cooling medium in the heat absorption flow path. The temperature of the heating medium can be obtained by a temperature sensor installed in the heating flow path of the warm air core. The temperature difference value can be obtained by subtracting the target temperature from the temperature of the heating medium. The target temperature can be set according to actual conditions.

[0057] In step S202, when the temperature difference is greater than or equal to a preset temperature threshold, a compressor start-stop control strategy is executed. The compressor start-stop control strategy is used to reduce the temperature of the heating medium.

[0058] In this embodiment, the preset temperature threshold can be 3℃ or 5℃. When the temperature difference is greater than or equal to the preset temperature threshold, a compressor start-stop control strategy can be executed to reduce the temperature of the heating medium and avoid heat waste caused by the need for continuous air mixing and cooling due to excessively high heating medium temperature. Furthermore, it can minimize the heat absorption under overheating conditions, balance the high and low pressures of the system, and effectively reduce the safety risks caused by high-suction overheating.

[0059] In one possible implementation, the heat source flow path includes at least one of the heat source flow path of the vehicle's battery and the heat source flow path of the vehicle's electric drive assembly, and the heat absorption flow path includes a compressor, executing a compressor start-stop control strategy, including: A first speed threshold is determined based on the temperature of the cooling medium in the heat source flow path of the battery and / or the cooling medium in the heat source flow path of the electric drive assembly; the compressor speed is controlled to the first speed threshold, and the compressor is stopped after a preset time; the compressor is started when the temperature of the heating medium in the heating flow path of the heater core is less than or equal to the target temperature.

[0060] In this embodiment, when the heat source flow path includes the heat source flow path of the vehicle's battery, a first rotational speed threshold can be determined based on the temperature of the cooling medium in the battery's heat source flow path. The first rotational speed threshold is positively correlated with the temperature of the cooling medium in the battery's heat source flow path.

[0061] When the heat source flow path includes the heat source flow path of the vehicle's electric drive assembly, a first speed threshold can be determined based on the temperature of the cooling medium in the heat source flow path of the electric drive assembly. The first speed threshold is positively correlated with the temperature of the cooling medium in the heat source flow path of the electric drive assembly.

[0062] When the heat source flow path includes both the heat source flow path of the vehicle's battery and the heat source flow path of the vehicle's electric drive assembly, a first speed threshold can be determined based on the temperatures of the cooling medium in the battery's heat source flow path and the cooling medium in the electric drive assembly's heat source flow path. The first speed threshold is positively correlated with the temperatures of the cooling medium in both the battery's and electric drive assembly's heat source flow paths. For example, a first sub-speed can be determined based on the temperature of the cooling medium in the battery's heat source flow path, a second sub-speed can be determined based on the temperature of the cooling medium in the electric drive assembly's heat source flow path, and the first speed threshold can be determined by combining a first weight for the temperature of the cooling medium in the battery's heat source flow path and a second weight for the temperature of the cooling medium in the electric drive assembly's heat source flow path. Alternatively, the smaller of the first and second sub-speeds can be determined as the first speed threshold.

[0063] After obtaining the first speed threshold, the compressor speed can be controlled to reach the first speed threshold and maintained for a preset duration, which can be 60 seconds. The water pump speed of the heating core circuit increases to its maximum, increasing the heat storage capacity of the water circuit. During heat storage, the air outlet temperature of the passenger compartment is controlled through linear air mixing, ensuring sufficient heat storage in the heating core circuit. Then, the compressor is stopped to cease heat absorption in the heat absorption path, lowering the temperature of the cooling medium in the heat absorption path and thus reducing the temperature of the heating medium in the heating core circuit. If the temperature of the heating medium in the heating core circuit is less than or equal to the target temperature, the compressor can be started to begin heat absorption in the heat absorption path, thereby increasing the temperature of the heating medium in the heating core circuit. After startup, the battery electronic expansion valve can open to its previous opening position before the compressor stopped.

[0064] In one possible embodiment, Implement compressor start / stop control strategies, including: Based on the temperature of the cooling medium and / or air in the heat source flow path, determine the second speed threshold; control the compressor speed to the second speed threshold and continue for a preset time before controlling the compressor to stop; control the compressor to start when the temperature of the heating medium in the heating core flow path is less than or equal to the target temperature.

[0065] In this embodiment, the heat source flow path may include at least one of the heat source flow path of the vehicle's battery and the heat source flow path of the vehicle's electric drive assembly. The refrigerant branch may also provide heat through a heat exchanger, which may be an air source heat exchanger that can absorb heat from the air, thereby increasing the temperature of the refrigerant in the refrigerant branch and transferring the heat-absorbing refrigerant to the heat-absorbing flow path.

[0066] When the heat source flow path provides heating, the second speed threshold can be obtained by referring to the method for determining the first speed threshold mentioned above. When the refrigerant branch provides heat, the second speed threshold can be determined based on the air temperature. The second speed threshold is positively correlated with the air temperature.

[0067] When both the heat source flow path and the refrigerant branch provide heat, a second speed threshold can be determined based on the air temperature and the temperature of the cooling medium in the heat source flow path. Specifically, a third sub-speed can be determined first based on the temperature of the cooling medium in the heat source flow path, and a fourth sub-speed can be determined based on the air temperature. The second speed threshold is then determined by combining a third weight for the temperature of the cooling medium in the heat source flow path and a fourth weight for the air temperature corresponding to the refrigerant branch. Alternatively, the smaller value between the third and fourth sub-speeds can be determined as the second speed threshold.

[0068] After obtaining the second speed threshold, the compressor speed can be controlled to reach the second speed threshold and maintained for a preset duration, which can be 60 seconds. The water pump speed of the heating core circuit increases to its maximum, increasing the heat storage capacity of the water circuit. During heat storage, the air outlet temperature of the passenger compartment is controlled through linear air mixing, ensuring sufficient heat storage in the heating core circuit. Then, the compressor is stopped to cease heat absorption in the heat absorption path, lowering the temperature of the cooling medium in the heat absorption path and thus reducing the temperature of the heating medium in the heating core circuit. If the temperature of the heating medium in the heating core circuit is less than or equal to the target temperature, the compressor can be started to begin heat absorption in the heat absorption path, thereby increasing the temperature of the heating medium in the heating core circuit. After startup, the battery electronic expansion valve can open to its opening degree before the compressor stopped.

[0069] Figure 3 This is a flowchart illustrating the steps of a thermal management method according to an exemplary embodiment, such as... Figure 3 As shown, it includes the following steps: In step S301, the heating core heating flow path directly recovers waste heat. When the target object on the vehicle needs heat, such as when the air conditioning heater is turned on in the passenger compartment, the heat generated by the heat source component can be directly transferred to the heating flow path and released to the target object on the vehicle through the heat source flow path and heating flow path connected to the multi-way valve.

[0070] In step S302, it is determined whether the temperature of the heating medium in the heating flow path of the heating core is greater than or equal to the target temperature and a preset temperature threshold. If the temperature of the heating medium in the heating flow path of the heating core is greater than or equal to the target temperature and a preset temperature threshold, then step S303 is executed. If the temperature of the heating medium is less than the target temperature and a preset temperature threshold, then step S304 is executed.

[0071] In step S303, compressor start / stop control is performed. Compressor start / stop control can be executed; for details, refer to the compressor start / stop control method described above. Then, step S305 is executed.

[0072] In step S305, it is determined whether the temperature of the heating medium in the heating flow path of the warm air core is less than or equal to the target temperature. If the temperature of the heating medium in the heating flow path of the warm air core is less than or equal to the target temperature, the process returns to step S301.

[0073] In step S304, waste heat is continued to be recovered directly through the heating flow path of the warm air core.

[0074] In step S306, it is determined whether the duration of direct waste heat recovery has reached the target duration. If the duration of direct waste heat recovery has reached the target duration, then step S307 is executed.

[0075] In step S307, the connection between the second heating flow path and the heat source flow path is controlled, and then the connection between the refrigerant branch and the heat absorption flow path is controlled.

[0076] In step S308, it is determined whether the refrigerant branch and the heat absorption flow path have been connected for a second preset time. If the refrigerant branch and the heat absorption flow path have been connected for a second preset time, the process returns to step S301.

[0077] Figure 4 This is a schematic diagram illustrating a compressor start / stop control device according to an exemplary embodiment, such as... Figure 4 As shown, a device is configured in a thermal management system, wherein the cooling medium in the heat absorption flow path is a refrigerant, and the heat absorption flow path includes a first pipe of a first heat exchanger connected in series to form a loop, a compressor, and a condenser. The compressor start-stop control device 400 includes: The determining module 401 is configured to determine the temperature difference between the temperature of the heating medium in the heating flow path of the warm air core and the target temperature. The execution module 402 is configured to execute a compressor start-stop control strategy when the temperature difference value is greater than or equal to a preset temperature threshold. The compressor start-stop control strategy is used to reduce the temperature of the heating medium.

[0078] Optionally, the heat source flow path includes at least one of the heat source flow path of the vehicle's battery and the heat source flow path of the vehicle's electric drive assembly, the heat absorption flow path includes a compressor, and the execution module 402 includes: The first determining submodule is configured to determine a first rotational speed threshold based on the temperature of the cooling medium in the heat source flow path of the battery and / or the temperature of the cooling medium in the heat source flow path of the electric drive assembly. The first control submodule is configured to control the speed of the compressor to the first speed threshold, and then control the compressor to stop after a preset time. The second control submodule is configured to control the compressor to start when the temperature of the heating medium in the heating flow path of the heating core is less than or equal to the target temperature.

[0079] Optionally, The execution module 402 includes: The second determining submodule is configured to determine a second rotational speed threshold based on the temperature of the cooling medium and / or air in the heat source flow path; The third control submodule is configured to control the compressor speed to the second speed threshold and then control the compressor to stop after a preset time. The fourth control submodule is configured to control the compressor to start when the temperature of the heating medium in the heating flow path of the heating core is less than or equal to the target temperature.

[0080] Regarding the compressor start / stop control device 400 in the above embodiments, the specific methods by which each module performs its operation have been described in detail in the embodiments related to the method, and will not be elaborated here.

[0081] This disclosure also provides a computer-readable storage medium having stored thereon computer program instructions that, when executed by a processor, implement the steps of the compressor start-stop control method provided in this disclosure.

[0082] Figure 5 This is a block diagram illustrating an electronic device according to an exemplary embodiment. For example, electronic device 500 may be a controller for a vehicle.

[0083] Reference Figure 5 The electronic device 500 may include one or more of the following components: a processing component 502, a first memory 504, a power supply component 506, a multimedia component 508, an audio component 510, an input / output interface 512, a sensor component 514, and a communication component 516.

[0084] Processing component 502 typically controls the overall operation of electronic device 500, such as operations associated with display, telephone calls, data communication, camera operation, and recording. Processing component 502 may include one or more first processors 520 to execute instructions to complete all or part of the steps of the compressor start-stop control method described above. Furthermore, processing component 502 may include one or more modules to facilitate interaction between processing component 502 and other components. For example, processing component 502 may include a multimedia module to facilitate interaction between multimedia component 508 and processing component 502.

[0085] The first memory 504 is configured to store various types of data to support the operation of the electronic device 500. Examples of such data include instructions for any application or method operating on the electronic device 500, contact data, phonebook data, messages, pictures, videos, etc. The first memory 504 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0086] Power supply component 506 provides power to various components of electronic device 500. Power supply component 506 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to electronic device 500.

[0087] Multimedia component 508 includes a screen that provides an output interface between the electronic device 500 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of the touch or swipe action but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 508 includes a front-facing camera and / or a rear-facing camera. When the electronic device 500 is in an operating mode, such as a shooting mode or a video mode, the front-facing camera and / or the rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0088] Audio component 510 is configured to output and / or input audio signals. For example, audio component 510 includes a microphone (MIC) configured to receive external audio signals when electronic device 500 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in first memory 504 or transmitted via communication component 516. In some embodiments, audio component 510 also includes a speaker for outputting audio signals.

[0089] Input / output interface 512 provides an interface between processing component 502 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, start buttons, and lock buttons.

[0090] Sensor assembly 514 includes one or more sensors for providing state assessments of various aspects of electronic device 500. For example, sensor assembly 514 may detect the on / off state of electronic device 500, the relative positioning of components such as the display and keypad of electronic device 500, changes in position of electronic device 500 or a component of electronic device 500, the presence or absence of user contact with electronic device 500, orientation or acceleration / deceleration of electronic device 500, and temperature changes of electronic device 500. Sensor assembly 514 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 514 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 514 may also include an accelerometer, gyroscope, magnetometer, pressure sensor, or temperature sensor.

[0091] Communication component 516 is configured to facilitate wired or wireless communication between electronic device 500 and other devices. Electronic device 500 can access wireless networks based on communication standards, such as WiFi, 2G, or 3G, or combinations thereof. In one exemplary embodiment, communication component 516 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 516 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0092] In an exemplary embodiment, the electronic device 500 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the compressor start-stop control method described above.

[0093] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a first memory 504 including instructions, which can be executed by a first processor 520 of an electronic device 500 to complete the compressor start-stop control method described above. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0094] In another exemplary embodiment, a computer program product is also provided, the computer program product comprising a computer program executable by a programmable device, the computer program having a code portion for performing the compressor start-stop control method described above when executed by the programmable device.

[0095] In an exemplary embodiment, a vehicle is also provided, including the thermal management system and electronic devices described in the above embodiments.

[0096] Those skilled in the art will also understand that the various illustrative logical blocks and steps listed in the embodiments of this application can be implemented by electronic hardware, computer software, or a combination of both. Whether such functionality is implemented through hardware or software depends on the specific application and the overall system design requirements. Those skilled in the art can implement the described functionality using various methods for each specific application, but such implementation should not be construed as exceeding the scope of protection of the embodiments of this application.

[0097] It should be understood that, unless otherwise specifically indicated, features of various embodiments of this disclosure described herein can be combined with each other.

[0098] Although terms such as “first,” “second,” and “third” may be used herein to describe various components, parts, regions, layers, or sections, these components, parts, regions, layers, or sections are not limited to these terms. Rather, these terms are used only to distinguish one component, part, region, layer, or section from another. Therefore, without departing from the teachings of the examples described herein, the first component, part, region, layer, or section mentioned in the examples may also be referred to as the second component, part, region, layer, or section. Furthermore, the terms “first” and “second” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as “first” or “second” may explicitly or implicitly include at least one of that feature. In the description herein, “a plurality” means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0099] Furthermore, the term “exemplary” is used herein to mean serving as an example, instance, or illustration. Any aspect or design described herein as “exemplary” is not necessarily to be construed as advantageous compared to other aspects or designs. Rather, the use of the term “exemplary” is intended to present the concept in a concrete manner. As used herein, the term “or” is intended to mean an inclusive “or” rather than an exclusive “or.” That is, unless otherwise specified or clear from the context, “X applies A or B” is intended to mean any of the natural inclusive arrangements. That is, “X applies A or B” satisfies any of the foregoing instances if X applies A; X applies B; or both X applies A and B. Additionally, unless otherwise specified or clear from the context to refer to the singular form, the articles “a” and “an” as used in this application and the appended claims are generally understood to mean “one or more.”

[0100] Similarly, although this disclosure has been shown and described with respect to one or more implementations, equivalent variations and modifications will occur to those skilled in the art upon reading and understanding this specification and the accompanying drawings. This disclosure includes all such modifications and variations and is limited only by the scope of the claims. In particular, with respect to the various functions performed by the components described above (e.g., elements, resources, etc.), unless otherwise indicated, the terminology used to describe such components is intended to correspond to any component (functionally equivalent) that performs the specific function of the described component, even if structurally not equivalent to the disclosed structure. Furthermore, although specific features of this disclosure may have been disclosed with respect to only one of several implementations, such features may be combined with one or more other features of other implementations, as may be desired and advantageous to any given or particular application. Moreover, with regard to the terms “comprising,” “owning,” “having,” “having,” or variations thereof as used in the detailed description or claims, such terms are intended to be inclusive in a manner similar to the term “including.”

[0101] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

[0102] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A thermal management system for a vehicle, characterized in that, include: A heat source flow path is used to transfer heat generated by heat source components on the vehicle. Multiple heating flow paths are used to release the heat transmitted by the heat source flow paths to the target object on the vehicle; The multi-way valve (2) is connected to the heat source flow path and multiple heating flow paths. Any heating flow path can be directly connected to the heat source flow path through the multi-way valve (2).

2. The vehicle thermal management system according to claim 1, characterized in that, The plurality of heating flow paths include a first heating flow path, which includes a heat exchange flow path and a heat absorption flow path. The heat exchange flow path uses the same cooling medium as the heat source flow path, while the heat absorption flow path uses a different cooling medium than the heat source flow path. The heat exchange flow path can be directly connected to the heat source flow path through the multi-way valve (2); The heat absorption flow path and the heat exchange flow path exchange heat through the first heat exchanger (41). The heat absorption flow path is used to release the heat absorbed from the heat exchange flow path to the corresponding target object on the vehicle.

3. The vehicle thermal management system according to claim 2, characterized in that, The cooling medium in the heat absorption flow path is a refrigerant, and the heat absorption flow path includes the first pipeline of the first heat exchanger (41) forming a loop in series, a compressor (42) and a condenser (43); The thermal management system further includes a refrigerant branch, which is connected in parallel with the first pipeline of the first heat exchanger (41). The refrigerant branch is used to be turned on when the working state of the compressor (42) meets preset conditions, so as to increase the amount of refrigerant returning to the compressor (42).

4. The vehicle thermal management system according to claim 3, characterized in that, The plurality of heating flow paths include a second heating flow path, the second heating flow path includes a radiator (6), the refrigerant branch includes a heat exchanger (5), and the radiator (6) and the heat exchanger (5) are arranged opposite to each other; When the refrigerant branch is open, the heat exchanger (5) heats the refrigerant in the refrigerant branch by absorbing the heat emitted by the radiator (6) so as to transfer the heated refrigerant to the compressor (42).

5. The vehicle thermal management system according to claim 4, characterized in that, The thermal management system also includes a heating air core heating flow path; The heating flow path of the heating core and the heat absorption flow path exchange heat through the second heat exchanger (72). The heating flow path of the heating core is used to release the heat absorbed from the heat absorption flow path to the passenger compartment of the vehicle through the heating core (71).

6. The vehicle thermal management system according to claim 5, characterized in that, The thermal management system further includes a controller, which is used to control the connection or disconnection of the second heating flow path and the heat source flow path, as well as the connection or disconnection of the refrigerant branch and the heat absorption flow path. The controller can control the connection between the second heating flow path and the heat source flow path when it is determined that the duration of heat exchange between the heat absorption flow path and the heat exchange flow path is greater than the target duration. After a first preset time period, the refrigerant branch is connected to the heat absorption flow path so that the refrigerant branch absorbs the heat dissipated by the radiator (6) through the heat exchanger (5) and the refrigerant in the refrigerant branch flows back to the compressor (42); After a second preset time has elapsed since the refrigerant branch and the heat absorption flow path are connected, the refrigerant branch and the heat absorption flow path are cut off.

7. The vehicle thermal management system according to claim 1, characterized in that, The heat source flow path includes the heat source flow path of the electric drive assembly (1) of the vehicle, used to transfer the heat generated by the electric drive assembly (1); the plurality of heating flow paths include the heating flow path of the battery (3) of the vehicle, and the air conditioning heating flow path; or; The heat source flow path includes the heat source flow path of the vehicle's battery (3) for transmitting the heat generated by the battery (3), and the plurality of heating flow paths include the vehicle's external heat dissipation flow path and the air conditioning heating flow path.

8. A compressor start-stop control method, characterized in that, The method is applied to the thermal management system of the vehicle described in claim 6. The method includes: Determine the temperature difference between the heating medium temperature and the target temperature in the heating flow path of the warm air core; When the temperature difference is greater than or equal to a preset temperature threshold, a compressor start-stop control strategy is executed, which is used to reduce the temperature of the heating medium.

9. The compressor start-stop control method according to claim 8, characterized in that, The heat source flow path includes at least one of the heat source flow path of the vehicle's battery and the heat source flow path of the vehicle's electric drive assembly, and the heat absorption flow path includes a compressor. The execution of the compressor start / stop control strategy includes: A first speed threshold is determined based on the temperature of the cooling medium in the heat source flow path of the battery and / or the temperature of the cooling medium in the heat source flow path of the electric drive assembly; Control the compressor speed to the first speed threshold, and then control the compressor to stop after a preset time. When the temperature of the heating medium in the heating flow path of the heating core is less than or equal to the target temperature, the compressor is controlled to start.

10. The compressor start-stop control method according to claim 8, characterized in that, The execution of the compressor start / stop control strategy includes: The second rotational speed threshold is determined based on the temperature of the cooling medium and / or air in the heat source flow path; Control the compressor speed to the second speed threshold, and after a preset time, control the compressor to stop. When the temperature of the heating medium in the heating flow path of the heating core is less than or equal to the target temperature, the compressor is controlled to start.

11. A compressor start / stop control device, characterized in that, include: The determination module is configured to determine the temperature difference between the temperature of the heating medium in the heating flow path of the warm air core and the target temperature; The execution module is configured to execute a compressor start-stop control strategy when the temperature difference is greater than or equal to a preset temperature threshold. The compressor start-stop control strategy is used to reduce the temperature of the heating medium.

12. An electronic device, characterized in that, include: processor; Memory used to store processor-executable instructions; The processor is configured to execute the steps of the compressor start-stop control method according to any one of claims 8 to 10.

13. A vehicle, characterized in that, The vehicle includes a thermal management system according to any one of claims 1-7, and an electronic device according to claim 12.

14. A computer-readable storage medium having computer program instructions stored thereon, characterized in that, When the computer program instructions are executed by the processor, they implement the steps of the compressor start-stop control method according to any one of claims 8 to 10.

15. A computer program product, characterized in that, It includes a computer program that, when executed by a processor, implements the steps of the compressor start-stop control method according to any one of claims 8 to 10.

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