Vehicle cooling system, vehicle thermal management system, vehicle, control method and product

Abstract

This application relates to a vehicle cooling system, a vehicle thermal management system, a vehicle, a control method for the vehicle cooling system, and related products. The vehicle cooling system includes a cooling module, a first return water tee, a second return water tee, a degassing tee, an expansion tank, a first water pump, and a module to be cooled. The return water inlet of the expansion tank is connected to the inlet of the first return water tee, and the degassing port of the expansion tank is connected to the outlet of the degassing tee. The expansion tank buffers changes in coolant volume. The first outlet of the first return water tee is connected to the first inlet of the second return water tee, and the second outlet of the first return water tee is connected to the heating circuit of the vehicle's heating system. The second inlet of the second return water tee is connected to the outlet of the cooling module, and the outlet of the second return water tee is connected to the inlet of the first water pump. This system allows for a shared expansion tank between the two systems, reducing the number of components, saving space, and lowering production costs.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a vehicle cooling system, a vehicle thermal management system, a vehicle, a control method for the vehicle cooling system, an apparatus, a computer device, a storage medium, and a computer program product. Background Technology

[0002] With the rapid development of new energy vehicles, the increasing complexity, diversification, and sophistication of thermal management system functional requirements have led to an explosive growth in the number of components in the vehicle's thermal management system. This increase in components results in a greater number of pipe joints, leading to higher installation and maintenance costs. Furthermore, the complex operating conditions and high energy consumption requirements of commercial vehicles place even stricter demands on system reliability and control methods. Simultaneously, the dispersed layout of components increases vibration and noise, posing challenges to the vehicle's noise, vibration, and harshness (NVH) performance. The increased number of thermal management system components also complicates the overall vehicle layout. Therefore, with the rapid development of new energy commercial vehicles and the pressure of vehicle energy consumption and layout space constraints, the optimization of system structure integration and control methods is imperative. Summary of the Invention

[0003] Based on this, it is necessary to provide a vehicle cooling system, a vehicle thermal management system, a vehicle, a control method, a device, a computer device, a storage medium, and a computer program product that can share an expansion chamber with the vehicle heating system, in order to address the above-mentioned technical problems.

[0004] In a first aspect, this application provides a vehicle cooling system, comprising a cooling module, a first return water tee, a second return water tee, a degassing tee, an expansion tank, a first water pump, and a module to be cooled; wherein, the return water inlet of the expansion tank is connected to the inlet of the first return water tee, and the degassing port of the expansion tank is connected to the outlet of the degassing tee, the expansion tank being used to buffer changes in coolant volume; the first outlet of the first return water tee is connected to the first inlet of the second return water tee, the second outlet of the first return water tee is used to connect to the heating circuit of the vehicle's heating system, the first return water tee being used to divert the coolant flowing out of the expansion tank; the second inlet of the second return water tee is connected to the outlet of the cooling module. The outlet of the second return water tee is connected to the inlet of the first water pump, and the second return water tee is used to collect the coolant flowing out of the cooling module and the expansion tank; the outlet of the first water pump is connected to the inlet of the module to be cooled, and the first water pump is used to drive the coolant; the outlet of the module to be cooled is connected to the inlet of the cooling module, and the module to be cooled is used to dissipate heat through the coolant; the cooling module is used to dissipate heat from the coolant; the first inlet of the degassing tee is connected to the degassing port of the outlet of the module to be cooled, and the second inlet of the degassing tee is used to connect to the degassing circuit of the vehicle heating system, and the degassing tee is used to collect the coolant flowing out of the vehicle cooling system and the vehicle heating system.

[0005] In one embodiment, the vehicle cooling system further includes a first degassing throttle valve and a second degassing throttle valve; wherein, the first degassing throttle valve is disposed on a first degassing path between the first inlet of the degassing tee and the degassing port of the heat dissipation module, and the first degassing throttle valve is used to regulate the flow rate of the coolant in the first degassing path and the pressure in the first degassing path; the second degassing throttle valve is disposed on a second degassing path between the second inlet of the degassing tee and the degassing port of the heating circuit of the vehicle heating system, and the second degassing throttle valve is used to regulate the flow rate of the coolant in the second degassing path and the pressure in the second degassing path.

[0006] In one embodiment, the vehicle cooling system further includes a temperature detection module, which is connected to the outlet of the cooling module and the second inlet of the second return water tee, respectively. The temperature detection module is used to obtain the fluid temperature of the coolant flowing out of the cooling module.

[0007] In one embodiment, the vehicle cooling system further includes a three-way proportional valve and a manifold, and the module to be cooled includes a first unit to be cooled and a second unit to be cooled; wherein, the inlet of the three-way proportional valve is connected to the outlet of the first water pump, the first outlet of the three-way proportional valve is connected to the inlet of the first unit to be cooled, and the second outlet of the three-way proportional valve is connected to the inlet of the second unit to be cooled, and the three-way proportional valve is used to regulate the flow rate of the coolant flowing from the first water pump to the first unit to be cooled and the second unit to be cooled; the first inlet of the manifold is connected to the outlet of the first unit to be cooled, the second inlet of the manifold is connected to the outlet of the second unit to be cooled, and the outlet of the manifold is connected to the inlet of the cooling module, and the manifold is used to collect the coolant flowing out of the first unit to be cooled and the second unit to be cooled.

[0008] In one embodiment, the cooling module includes a radiator and a fan, wherein the inlet of the radiator is connected to the outlet of the module to be cooled, and the outlet of the radiator is connected to the second inlet of the second return tee, and the radiator is used to dissipate heat from the coolant; the fan is located on the first side of the radiator and is used to dissipate heat from the radiator.

[0009] The vehicle cooling system also includes a condenser located on the second side of the radiator, which is used to dissipate heat from the vehicle; wherein the first side and the second side are two sides of the radiator that are arranged opposite to each other.

[0010] Secondly, this application also provides a vehicle thermal management system, the vehicle thermal management system comprising:

[0011] The vehicle cooling system provided in the first aspect above;

[0012] The vehicle heating system has a heating circuit that is connected to the return water port of the expansion tank in the vehicle cooling system via a first return water tee in the vehicle cooling system, and a degassing circuit that is connected to the degassing port of the expansion tank via a degassing tee in the vehicle cooling system. The vehicle heating system is used to heat the vehicle.

[0013] In one embodiment, the vehicle heating system includes a second water pump, a heater, and a heater core. The inlet of the second water pump is connected to the second outlet of the degassing tee, and the outlet of the second water pump is connected to the inlet of the heater. The second water pump drives the coolant to flow in the heating circuit. The inlet of the heater is connected to the second inlet of the degassing tee, and the outlet of the heater is connected to the heater core. The heater heats the coolant. The outlet of the heater core is connected to the second water pump, and the heater core heats the coolant.

[0014] Thirdly, this application also provides a vehicle that includes the vehicle cooling system provided in the first aspect or the vehicle thermal management system provided in the second aspect.

[0015] Fourthly, this application also provides a control method for a vehicle cooling system, applied to the vehicle cooling system provided in the first aspect above, the method comprising:

[0016] If the system fails to receive the temperature signal of the module to be cooled in the vehicle cooling system, it controls the first water pump of the vehicle cooling system to operate at maximum speed and generates fault information.

[0017] If the temperature signal is successfully received, it is determined whether the body temperature of the module to be cooled, carried by the temperature signal, exceeds a preset temperature threshold. If the body temperature exceeds the preset temperature threshold, the first water pump is controlled to work.

[0018] In one embodiment, if the temperature signal is successfully received, the method further includes:

[0019] The operating status of the temperature detection modules of the first water pump and the vehicle cooling system are respectively acquired; wherein, the step of controlling the first water pump to operate when the body temperature exceeds the preset temperature threshold includes:

[0020] When the body temperature exceeds the preset temperature threshold, the first water pump fails, and the temperature detection module is normal, the fan of the cooling module in the vehicle cooling system is controlled to work.

[0021] In the case where the body temperature exceeds the preset temperature threshold, the first water pump is normal and the temperature detection module is faulty, the first water pump is controlled to operate at the maximum speed and the fan is controlled to operate.

[0022] If the body temperature exceeds the preset temperature threshold and both the first water pump and the temperature detection module malfunction, an alarm message is generated.

[0023] When the body temperature exceeds the preset temperature threshold and both the first water pump and the temperature detection module are functioning normally, the first water pump is controlled to operate.

[0024] In one embodiment, controlling the first water pump to operate when the body temperature exceeds the preset temperature threshold and both the first water pump and the temperature detection module are functioning normally includes:

[0025] The output power of the module to be cooled is obtained, and the fluid temperature of the coolant flowing out of the cooling module is obtained using the temperature detection module;

[0026] The first water pump is controlled to operate based on the output power and the fluid temperature.

[0027] In one embodiment, obtaining the output power of the module to be cooled includes: obtaining the first power output by the first heat-dissipating unit of the module to be cooled and the second power output by the second heat-dissipating unit of the module to be cooled;

[0028] The step of controlling the operation of the first water pump based on the output power and the fluid temperature includes: controlling the operation of the first water pump based on the first power, the second power, and the fluid temperature;

[0029] The method further includes: controlling the opening degree of the three-way proportional valve of the vehicle cooling system according to the first power, the second power and the fluid temperature; wherein the opening degree includes a first opening degree and a second opening degree, the first opening degree corresponds to the first heat dissipation branch of the first heat dissipation unit and the second opening degree corresponds to the second heat dissipation branch of the second heat dissipation unit.

[0030] In one embodiment, controlling the operation of the first water pump and the opening degree of the three-way proportional valve based on the first power, the second power, and the fluid temperature includes:

[0031] When the output power is less than the preset power threshold, the first duration is less than the first time threshold, and the fluid temperature is less than the first preset temperature, the first water pump is controlled to operate at the minimum speed, and the three-way proportional valve is controlled to open the first heat dissipation branch according to the first preset ratio and the second heat dissipation branch according to the second preset ratio; wherein, the first duration is the duration during which the output power is less than the preset power threshold;

[0032] When the output power is less than the preset power threshold, the first duration is less than the first time threshold, and the fluid temperature is greater than the first preset temperature and less than the second preset temperature, the speed of the first water pump is linearly adjusted according to the preset hysteresis temperature, and the three-way proportional valve is controlled to open the first heat dissipation branch according to the first preset ratio and the second heat dissipation branch according to the second preset ratio; wherein, the second preset temperature is less than the first preset temperature.

[0033] When the first power is greater than the preset power threshold, the second duration is greater than the second time threshold, and the fluid temperature is greater than the third preset temperature and less than the fourth preset temperature, the speed of the first water pump is linearly adjusted according to the preset hysteresis temperature, and the three-way proportional valve is controlled to open the first heat dissipation branch according to the third preset ratio and the second heat dissipation branch according to the fourth preset ratio; wherein, the second duration refers to the duration for which the first power is greater than the preset power threshold; the third preset temperature is less than the fourth preset temperature, the third preset ratio is greater than the first preset ratio, and the fourth preset ratio is less than the second preset ratio;

[0034] When the second power is greater than the preset power threshold, the third duration is greater than the third time threshold, and the fluid temperature is greater than the fifth preset temperature and less than the sixth preset temperature, the speed of the first water pump is linearly adjusted according to the preset hysteresis temperature, and the three-way proportional valve is controlled to open the first heat dissipation branch according to the fifth preset ratio and the second heat dissipation branch according to the sixth preset ratio; wherein, the third duration refers to the duration for which the second sub-output power is greater than the preset power threshold; the fifth preset ratio is less than the first preset ratio, and the sixth preset ratio is greater than the second preset ratio.

[0035] In one embodiment, the method further includes:

[0036] Obtain the operating status of the condenser in the vehicle's cooling system;

[0037] When the first water pump is not working and the condenser is working, the fan of the cooling module in the vehicle cooling system is controlled to operate at a first speed.

[0038] When the first water pump is working and the condenser is not working, the fan speed is controlled in a closed loop according to the fluid temperature so that the fluid temperature is within a preset temperature range;

[0039] When the first water pump is working and the condenser is working, the fan is controlled to operate at a target speed; wherein, the target speed is the maximum value between the first speed and the required fan speed, and the required fan speed corresponds to the heat dissipation requirements of the vehicle cooling system.

[0040] Fifthly, this application also provides a control device for a vehicle cooling system, the device being applied to the vehicle cooling system provided in the first aspect above, the device comprising:

[0041] The first control module is used to control the first water pump of the vehicle cooling system to operate at maximum speed and generate fault information when it fails to receive the temperature signal of the module to be cooled in the vehicle cooling system.

[0042] The second control module is used to determine whether the body temperature of the module to be cooled, carried by the temperature signal, exceeds a preset temperature threshold when the temperature signal is successfully received, and to control the first water pump to work when the body temperature exceeds the preset temperature threshold.

[0043] Sixthly, this application also provides a computer device. The computer device includes a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the steps of the control method for the vehicle cooling system described in the fourth aspect above.

[0044] Seventhly, this application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program thereon, which, when executed by a processor, implements the steps of the control method for the vehicle cooling system described in the fourth aspect above.

[0045] Eighthly, this application also provides a computer program product. The computer program product includes a computer program that, when executed by a processor, implements the steps of the control method for the vehicle cooling system described in the fourth aspect above.

[0046] The aforementioned vehicle cooling system, vehicle thermal management system, vehicle, control method, device, computer equipment, storage medium, and computer program product for the vehicle cooling system, wherein the vehicle cooling system includes a cooling module, a first return water tee, a second return water tee, a degassing tee, an expansion tank, a first water pump, and a module to be cooled. The first return water tee and the degassing tee are arranged near the expansion tank. The first return water tee is connected to the inlet of the first water pump and a return water connector is reserved for the vehicle heating system. The degassing port of the expansion tank is connected to the degassing port of the module to be cooled through the degassing tee and a degassing port is reserved for the vehicle heating system. This realizes the dual systems sharing the expansion tank, thereby reducing the number of parts, saving space, and reducing production costs. Attached Figure Description

[0047] Figure 1 This is a structural block diagram of a vehicle cooling system and a vehicle heating system in one embodiment;

[0048] Figure 2 This is one of the flowcharts illustrating a control method for a vehicle cooling system in one embodiment;

[0049] Figure 3 This is a flowchart illustrating step S204 of the control method for a vehicle cooling system in one embodiment;

[0050] Figure 4 This is a flowchart illustrating step S308 of the control method for a vehicle cooling system in one embodiment;

[0051] Figure 5 This is a second schematic flowchart of a control method for a vehicle cooling system in one embodiment;

[0052] Figure 6 This is a third flowchart illustrating the control method for a vehicle cooling system in one embodiment;

[0053] Figure 7 This is a fourth flowchart illustrating the control method for a vehicle cooling system in one embodiment;

[0054] Figure 8 This is a structural block diagram of the control device for a vehicle cooling system in one embodiment;

[0055] Figure 9 This is an internal structural diagram of a computer device in one embodiment.

[0056] Explanation of reference numerals in the attached figures:

[0057] 1-Vehicle cooling system, 11-Cooling module, 111-Radiator, 112-Fan, 121-First return water tee, 122-Second return water tee, 123-Degassing tee, 124-Combination tee, 13-Expansion tank, 14-First water pump, 15-Module to be cooled, 151-Multi-function controller, 152-Power motor, 153-Other components requiring cooling, 161-First degassing throttle valve, 162-Second degassing throttle valve, 17-Temperature detection module, 18-Three-way proportional valve, 19-Condenser, 2-Vehicle heating system, 21-Second water pump, 22-Heater, 23-Heater core. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0059] As mentioned in the background section, the number of components in vehicle thermal management systems has exploded due to the diversification of functional requirements, leading to numerous problems. To address this, this application provides a vehicle cooling system and its control method, apparatus, computer equipment, computer-readable storage medium, and computer program product, which enables the vehicle cooling system and vehicle heating system to share an expansion tank, saving space, reducing the number of components, and lowering production costs.

[0060] The following is combined with Figure 1 This application describes the vehicle cooling system, vehicle thermal management system, and vehicle provided in the embodiments of this application.

[0061] Please see Figure 1 In one embodiment, a vehicle cooling system is provided. Figure 1 As shown, the vehicle cooling system 1 includes a cooling module 11, a first return water tee 121, a second return water tee 122, a degassing tee 123, an expansion tank 13, a first water pump 14, and a heat dissipation module 15.

[0062] The expansion tank 13 has its return port connected to the inlet of the first return tee 121, and its venting port connected to the outlet of the venting tee 123. The expansion tank 13 is used to buffer changes in coolant volume. The first outlet of the first return tee 121 is connected to the first inlet of the second return tee 122, and the second outlet of the first return tee 121 is used to connect to the heating circuit of the vehicle's heating system 2. The first return tee 121 is used to divert coolant flowing out of the expansion tank 13. The second inlet of the second return tee 122 is connected to the outlet of the cooling module 11, and the outlet of the second return tee 122 is connected to the inlet of the first water pump 14. The second return tee 122 is used to collect coolant flowing from the cooling module 11 and the expansion tank 13. The outlet of the first water pump 14 is connected to the inlet of the module to be cooled 15, and the first water pump 14 is used to drive the coolant. For example, the first water pump 60 can be an electric water pump. The outlet of the heat dissipation module 15 is connected to the inlet of the cooling module 11. The heat dissipation module 15 is used to dissipate heat through the coolant. In this embodiment, the heat dissipation module 15 refers to a component in the vehicle that needs to be cooled. For example, the heat dissipation module 15 may include a multi-function controller, a power motor, and other components that need to be cooled (such as a battery, a vehicle controller, etc.). This application does not limit the heat dissipation module 15 in any way. The cooling module 11 is used to dissipate heat from the coolant. The first inlet of the venting tee 123 is connected to the venting port of the heat dissipation module 15. The second inlet of the venting tee 123 is used to connect to the venting circuit of the vehicle heating system 2. The venting tee 123 is used to collect the coolant flowing out of the vehicle cooling system 1 and the vehicle heating system 2.

[0063] The aforementioned vehicle cooling system 1 has a first return water tee 121 and a degassing tee 123 arranged near the expansion tank 13. The first return water tee 121 is connected to the inlet of the first water pump 14 and a return water connector is reserved for the vehicle heating system 2. The degassing port of the expansion tank 13 is connected to the degassing port of the heat dissipation module 15 (the highest point of the system) through the degassing tee 123 and a degassing port is reserved for the vehicle heating system 2. This realizes that the two systems share the expansion tank 13, thereby reducing the number of parts, saving space, and reducing production costs.

[0064] Please continue reading. Figure 1 In one embodiment, the vehicle cooling system 1 further includes a first degassing throttle valve 161 and a second degassing throttle valve 162. The first degassing throttle valve 161 is located on a first degassing path between the first inlet of the degassing tee 123 and the degassing port of the heat dissipation module 15, and is used to regulate the flow rate and pressure of the coolant in the first degassing path. The second degassing throttle valve 162 is located on a second degassing path between the second inlet of the degassing tee 123 and the degassing port of the heating circuit of the vehicle heating system 2, and is used to regulate the flow rate and pressure of the coolant in the second degassing path. Therefore, by adding throttle valves to the degassing path between the vehicle cooling system 1 and the vehicle heating system 2, the flow rate in the main circuit is prevented from being insufficient due to degassing path diversion, the impact of pressure imbalance caused by pipeline design and other factors on the exhaust effect is reduced, the mutual influence between the two systems is decreased, and the stability and reliability of the two systems are ensured.

[0065] Optionally, the first degassing throttle valve 161 and the second degassing throttle valve 162 can be installed inside the degassing hoses of the first and second degassing circuits to maintain pressure and flow balance. The specific design process is as follows: First, based on past experience, the flow rate of the degassing circuit generally accounts for 5-10% of the total flow rate. At this point, the degassing effect can be guaranteed, and the flow diversion of the degassing circuit has little impact on the main circuit flow. Second, the degassing tee 123 is placed as close as possible to the expansion tank 13, and a Y-type tee is used to reduce the mutual influence between the two degassing circuits. Third, the structure of the first degassing throttle valve 161 and the second degassing throttle valve 162 is designed through simulation calculations. Finally, the structure of the throttling element is optimized based on the actual vehicle test structure after verification on a real vehicle.

[0066] Please continue reading. Figure 1In one embodiment, the vehicle cooling system 1 further includes a temperature detection module 17, which is connected to the outlet of the cooling module 11 and the second inlet of the second return tee 122. The temperature detection module 17 is used to obtain the fluid temperature of the coolant flowing out of the cooling module 11. For example, the temperature detection module 17 can be a water temperature sensor. Based on this, the temperature detection module 17 can obtain the temperature of the coolant from the cooling module 11 in real time, realizing effective real-time monitoring of the cooling module 11 and ensuring the reliability of the vehicle cooling system 1.

[0067] Please continue reading. Figure 1 In one embodiment, the vehicle cooling system 1 further includes a three-way proportional valve 18 and a manifold tee 124. The heat dissipation module 15 includes a first heat dissipation unit and a second heat dissipation unit. For example, the first heat dissipation unit includes an all-in-one controller 151 and a power motor 152, and the second heat dissipation unit may include other heat dissipation components 153 on the vehicle, such as a battery, vehicle controller, etc.

[0068] The three-way proportional valve 18 has its inlet connected to the outlet of the first water pump 14, its first outlet connected to the inlet of the first unit to be cooled, and its second outlet connected to the inlet of the second unit to be cooled. The three-way proportional valve 18 is used to regulate the flow rate of coolant from the first water pump 14 to the first and second units to be cooled. The manifold tee 124 has its first inlet connected to the outlet of the first unit to be cooled, its second inlet connected to the outlet of the second unit to be cooled, and its outlet connected to the inlet of the cooling module 11. The manifold tee 124 is used to collect the coolant flowing from the first and second units to be cooled.

[0069] The aforementioned vehicle cooling system 1 achieves independent heat dissipation for the first and second heat dissipation units in the heat dissipation module 15 through a three-way proportional valve 18 and a manifold tee 124, thereby improving the system's heat dissipation efficiency.

[0070] Please continue reading. Figure 1In one embodiment, the cooling module 11 includes a radiator 111 and a fan 112. The inlet of the radiator 111 is connected to the outlet of the module 15 to be cooled, and the outlet of the radiator 111 is connected to the second inlet of the second return tee 122. The radiator 111 is used to dissipate heat from the coolant. The fan 112 is located on the first side of the radiator 111 and is used to dissipate heat from the radiator. Furthermore, the vehicle cooling system 1 also includes a condenser 19, located on the second side of the radiator 111, and is used to dissipate heat from the vehicle. The first side and the second side are two sides of the radiator 111 that are opposite to each other. Based on this, the vehicle cooling system 1 can utilize the radiator 111, the fan 112, and the condenser 19 to dissipate heat from the vehicle to meet its cooling requirements.

[0071] Please continue reading. Figure 1 In one embodiment, a vehicle thermal management system is also provided. For example... Figure 1 As shown, the vehicle thermal management system includes the vehicle cooling system 1 provided in any of the above embodiments, and also includes a vehicle heating system 2. The heating circuit of the vehicle heating system 2 is connected to the return water port of the expansion tank 13 in the vehicle cooling system 1 through the first return water tee 121 in the vehicle cooling system 1, and the degassing circuit of the vehicle heating system 2 is connected to the degassing port of the expansion tank 13 through the degassing tee 123 in the vehicle cooling system 1. The vehicle heating system 2 is used to heat the vehicle.

[0072] The aforementioned vehicle thermal management system, in which the vehicle cooling system 1 and the vehicle heating system 2 are connected to the expansion tank 13 via the first return water tee 121 and the degassing tee 123, enables the two systems to share the expansion tank 13, saving space, reducing the number of parts, and lowering production costs.

[0073] Please continue reading. Figure 1 In one embodiment, another vehicle thermal management system is provided, wherein the vehicle heating system 2 includes a second water pump 21, a heater 22, and a heater core 23. The inlet of the second water pump 21 is connected to the second outlet of the venting tee 123, and the outlet of the second water pump 21 is connected to the inlet of the heater 22. The second water pump 21 drives the coolant to flow in the heating circuit. The inlet of the heater 22 is connected to the second inlet of the venting tee 123, and the outlet of the heater 22 is connected to the heater core 23. The heater 22 heats the coolant, and the outlet of the heater core 23 is connected to the second water pump 21. The heater core 23 also heats the coolant. Based on this, a shared expansion tank 13 is achieved for both systems, saving space, reducing the number of parts, and lowering production costs.

[0074] Based on the vehicle cooling system or vehicle thermal management system provided in the above embodiments, this application also provides a vehicle that may include the vehicle cooling system or vehicle thermal management system provided in any of the above embodiments. This achieves a shared expansion tank for both systems, saving space, reducing the number of parts, and lowering production costs.

[0075] In view of the vehicle cooling system provided in the above embodiments, this application also provides a control method for the vehicle cooling system. Based on the actual vehicle operating conditions, a corresponding system control strategy is proposed to reduce system complexity, improve system control accuracy, thereby reducing system energy consumption and increasing driving range.

[0076] In one embodiment, such as Figure 2 As shown, a control method for a vehicle cooling system is provided. This method is applied to the vehicle cooling system provided in any of the above embodiments. This embodiment illustrates the application of this method to a vehicle controller. It is understood that this method can also be applied to other products with control functions, such as electronic control units (ECUs) and programmable gate arrays. In this embodiment, the method includes the following steps S202 and S204.

[0077] S202: If the temperature signal of the module to be cooled in the vehicle cooling system fails to be received, the first water pump of the vehicle cooling system is controlled to operate at maximum speed and fault information is generated.

[0078] S204: If the temperature signal is successfully received, determine whether the body temperature of the module to be cooled carried by the temperature signal exceeds the preset temperature threshold, and control the first water pump to work if the body temperature exceeds the preset temperature threshold.

[0079] by Figure 1 Taking the vehicle cooling system shown as an example, the module 15 to be cooled may include a multi-function controller 151, a power motor 152, and other components 153 that require cooling. For example, the terminal attempts to receive a first temperature signal from the multi-function controller 151, a second temperature signal from the power motor 152, and a third temperature signal from the other components 153 that require cooling.

[0080] If any of the first, second, and third temperature signals is lost, a fault message is generated to indicate a fault in the component corresponding to the lost signal, and the first water pump 14 is controlled to operate at its maximum speed Nmax. For example, if the first temperature signal is not received, the terminal generates a fault message to indicate a fault in the all-in-one controller 151, and controls the first water pump 14 to operate at its maximum speed Nmax.

[0081] If the first, second, and third temperature signals are successfully received, it is determined whether the first body temperature Ta carried by the first temperature signal exceeds a first preset temperature threshold Tx1, whether the second body temperature Tb carried by the second temperature signal exceeds a second preset temperature threshold Tx2, and whether the third body temperature Tc carried by the third temperature signal exceeds a third preset temperature threshold Tx3. If any one of the body temperatures Ta, Tb, and Tc exceeds the corresponding preset temperature threshold Txn (n = 1, 2, 3), the first water pump 14 is controlled to operate. If none of the body temperatures exceed the corresponding preset temperature thresholds, the first water pump 14 does not operate. The preset temperature thresholds Txn are pre-set and can be configured experimentally; no limitations are imposed here.

[0082] It should be noted that the above is only an illustrative example. In actual applications, the settings can be adjusted according to the specific structure of the vehicle's cooling system, and no limitations are made here.

[0083] The above-mentioned vehicle cooling system control method can troubleshoot based on temperature signals, which improves the reliability of the vehicle cooling system. It can also control the operation of the first water pump based on the body temperature carried by the temperature signal of the module to be cooled, which improves the system control accuracy, thereby reducing system energy consumption and increasing driving range.

[0084] In one embodiment, if the terminal successfully receives the temperature signal, the control method for the vehicle cooling system may further include: acquiring the operating status of the first water pump and the temperature detection module of the vehicle cooling system, respectively. In this embodiment, the operating status includes two states: fault and normal operation (i.e., no fault). Based on this, as... Figure 3 As shown, the above-mentioned S204: controlling the operation of the first water pump when the body temperature exceeds the preset temperature threshold can include the following steps S302 to S308.

[0085] S302: When the body temperature exceeds the preset temperature threshold, the first water pump fails, and the temperature detection module is normal, control the cooling module fan in the vehicle cooling system to work.

[0086] S304: When the body temperature exceeds the preset temperature threshold, the first water pump is normal, and the temperature detection module is faulty, control the first water pump to operate at maximum speed and control the fan to operate.

[0087] S306: An alarm message is generated when the body temperature exceeds the preset temperature threshold and both the first water pump and the temperature detection module are faulty.

[0088] S308: When the body temperature exceeds the preset temperature threshold and both the first water pump and the temperature detection module are functioning normally, control the first water pump to operate.

[0089] Understandably, after successfully receiving the temperature signal from the module to be cooled, if the temperature of any component in the module reaches a preset temperature threshold, it can be determined whether the first water pump and temperature detection module in the vehicle cooling system are faulty. If a fault is found, the terminal can report the relevant fault and control the first water pump and fan to enter fault mode according to the fault type.

[0090] Specifically, if only the first water pump fails, the fan operates according to the normal control strategy. If only the temperature detection module fails, both the first water pump and the fan are controlled to operate at maximum speed. If both the first water pump and the temperature detection module fail, the first water pump and the fan are controlled according to the more severe handling measures. If both the first water pump and the temperature control module are functioning correctly, the first water pump can be triggered to operate at the lowest speed Nmin.

[0091] Optionally, it can also determine whether the cooling module fan in the vehicle's cooling system is faulty. If the fan is faulty, a fault message is generated to indicate the fan malfunction. If the fan is not faulty, proceed as described above. Figure 3 The method is used for appropriate control.

[0092] The above-mentioned vehicle cooling system control method can control the first water pump and the fan in the cooling module according to the working status of the first water pump and the temperature detection module when the body temperature of the module to be cooled exceeds the preset temperature threshold. This can meet the vehicle's heat dissipation needs while minimizing vehicle power consumption, thereby increasing the vehicle's driving range.

[0093] In one embodiment, such as Figure 4 As shown, step S308 above: controlling the first water pump to work when the body temperature exceeds the preset temperature threshold and both the first water pump and the temperature detection module are normal, may include the following steps S402 and S404.

[0094] S402: Obtain the output power of the module to be cooled and use the temperature detection module to obtain the fluid temperature of the coolant flowing out of the cooling module.

[0095] S404: Controls the operation of the first water pump based on the output power and fluid temperature.

[0096] The above-mentioned vehicle cooling system control method makes a comprehensive judgment based on the output power of the module to be cooled and the fluid temperature fed back by the temperature detection module, so as to control the speed of the first water pump, so that the vehicle cooling system can meet the vehicle's heat dissipation needs and ensure the system's heat dissipation efficiency.

[0097] In one embodiment, step S402: obtaining the output power of the module to be cooled may include: obtaining the first power output by the first heat-dissipating unit of the module to be cooled and the second power output by the second heat-dissipating unit of the module to be cooled. Figure 1 Taking the heat dissipation module shown as an example, the first heat dissipation unit includes a multi-function controller and a power motor, and the second heat dissipation unit consists of other components requiring heat dissipation. Therefore, the first power is the power output by the multi-function controller and the power motor. The second power refers to the power output by the other components requiring heat dissipation. Based on this, the above-mentioned S404: controlling the operation of the first water pump according to the output power and the fluid temperature can include the step of controlling the operation of the first water pump according to the first power, the second power, and the fluid temperature.

[0098] The control method for the aforementioned vehicle cooling system may further include: controlling the opening degree of the three-way proportional valve of the vehicle cooling system based on the first power, the second power, and the fluid temperature. The opening degree includes a first opening degree and a second opening degree, with the first opening degree corresponding to the first cooling branch of the first unit to be cooled, and the second opening degree corresponding to the second cooling branch of the second unit to be cooled. In other words, the terminal can control the flow rate of each branch by controlling the opening degree of the three-way proportional valve based on the output power of each branch and the fluid temperature fed back in real time by the temperature detection module. This reduces the power consumption of the first water pump, makes the water flow distribution between the two branches more reasonable, and improves the cooling efficiency of the system.

[0099] In one embodiment, such as Figure 5 As shown, the above steps, which control the operation of the first water pump and the opening degree of the three-way proportional valve according to the first power, the second power and the fluid temperature, may include the following steps S502 to S508.

[0100] S502: When the output power is less than the preset power threshold, the first duration is less than the first time threshold, and the fluid temperature is less than the first preset temperature, control the first water pump to operate at the minimum speed, and control the three-way proportional valve to open the first heat dissipation branch according to the first preset ratio and the second heat dissipation branch according to the second preset ratio.

[0101] The output power refers to the total output power of the all-in-one controller, the power motor, and other components requiring heat dissipation, i.e., the sum of the first power and the second power. The first duration is the duration during which the output power is less than a preset power threshold. The preset power threshold, the first time threshold, the first preset temperature, the first preset ratio, and the second preset ratio are all preset and can be determined experimentally, without any limitations here. When the output power is less than the preset power threshold and the first duration is less than the preset time threshold, it indicates that the vehicle is in normal operating mode. In this embodiment, the fluid temperature is denoted as Thw, and the first preset temperature is denoted as Thw1. In normal operating mode, if Thw < Thw1, the first water pump is controlled to operate at its minimum speed Nmin, and the three-way proportional valve is controlled to open according to a preset ratio to control the flow rate of the two branches.

[0102] S504: When the output power is less than the preset power threshold, the first duration is less than the first time threshold, and the fluid temperature is greater than the first preset temperature and less than the second preset temperature, the speed of the first water pump is linearly adjusted according to the preset hysteresis temperature, and the three-way proportional valve is controlled to open the first heat dissipation branch according to the first preset ratio and the second heat dissipation branch according to the second preset ratio.

[0103] In this embodiment, the second preset temperature is less than the first preset temperature, and is denoted as Thw2. Both the second preset temperature and the preset hysteresis temperature are pre-set and can be determined experimentally; no limitation is made here. For example, the preset hysteresis temperature can be set to 1℃, 2℃, 3℃, 5℃, or any other arbitrary value. For example, in normal operating mode, if Thw1 < Thw < Thw2, the speed of the first water pump can be linearly adjusted and hystered by 3℃ (calibrated), and the three-way proportional valve can be controlled to open according to a preset proportional degree to control the flow rate of the two branches.

[0104] S506: When the first power is greater than the preset power threshold, the second duration is greater than the second time threshold, and the fluid temperature is greater than the third preset temperature and less than the fourth preset temperature, the speed of the first water pump is linearly adjusted according to the preset hysteresis temperature, and the three-way proportional valve is controlled to open the first heat dissipation branch according to the third preset ratio and the second heat dissipation branch according to the fourth preset ratio.

[0105] The second duration refers to the duration during which the first power exceeds the preset power threshold. The third preset temperature is less than the fourth preset temperature, the third preset ratio is greater than the first preset ratio, and the fourth preset ratio is less than the second preset ratio. The second time threshold, third preset temperature, fourth preset temperature, third preset ratio, and fourth preset ratio are all preset and can be determined experimentally, without any limitations. In this embodiment, the third preset temperature is denoted as Thw3, and the fourth preset temperature is denoted as Thw4. If the first power output by the multi-function controller and the power motor is greater than the preset power threshold and the duration is greater than the threshold, it indicates that the vehicle is in a high-power output mode of the motor. In this case, the opening of the three-way proportional valve is adjusted to increase the opening of the first heat dissipation branch where the multi-function controller and the power motor are located, decrease the opening of the second heat dissipation branch where other heat dissipation components are located, and correspondingly reduce the speed of the first water pump. At the same time, the temperature threshold of the temperature detection module is controlled between Thw3 and Thw4. For example, in this case, the speed of the first water pump is linearly adjusted and hysteresis is 3°C (calibration required).

[0106] Under this condition, the heat dissipation of the branch where the multi-function controller and the motor are located is large, while the heat dissipation of other components that require heat dissipation is small or even non-existent. Adjusting the opening of the three-way proportional valve increases the water flow in the branch where the multi-function controller and the motor are located, while at the same time reducing the water pump speed and lowering the water pump energy consumption.

[0107] S508: When the second power is greater than the preset power threshold, the third duration is greater than the third time threshold, and the fluid temperature is greater than the fifth preset temperature and less than the sixth preset temperature, the speed of the first water pump is linearly adjusted according to the preset hysteresis temperature, and the three-way proportional valve is controlled to open the first heat dissipation branch according to the fifth preset ratio and the second heat dissipation branch according to the sixth preset ratio.

[0108] The third duration refers to the duration for which the second sub-output power exceeds a preset power threshold. The fifth preset ratio is less than the first preset ratio, and the sixth preset ratio is greater than the second preset ratio. The third time threshold, fifth preset temperature, sixth preset temperature, fifth preset ratio, and sixth preset ratio are all preset and can be determined experimentally; no limitations are imposed here. In this embodiment, the fifth preset temperature is denoted as Thw5, and the sixth preset temperature is denoted as Thw6. If the second power output of other components requiring heat dissipation exceeds the preset power threshold and the duration exceeds the threshold, it indicates that the vehicle is in a high-power output operating mode for other components requiring heat dissipation. In this case, the opening of the three-way proportional valve is adjusted, the opening of the first heat dissipation branch containing the multi-function controller and the power motor is reduced, the opening of the second heat dissipation branch containing other components is increased, and the speed of the first water pump is correspondingly reduced. Simultaneously, the temperature threshold of the temperature detection module is controlled between Thw5 and Thw6. For example, in this case, the speed of the first water pump is linearly adjusted with a hysteresis of 3°C (calibration required).

[0109] Under this condition, other components requiring heat dissipation have a large heat dissipation, while the multi-function controller and power motor branch have a small heat dissipation. Adjusting the opening of the three-way proportional valve increases the water flow in the branch where other components requiring heat dissipation are located, while at the same time reducing the water pump speed and lowering the water pump energy consumption.

[0110] The control method for the vehicle cooling system described above takes into account the actual operating conditions of the vehicle. Under different operating conditions, the flow rate can be adjusted by a three-way proportional valve to reduce water pump power consumption, achieve more reasonable water flow distribution, reduce system complexity, improve system control accuracy, thereby reducing system energy consumption and increasing driving range. The overall model and control principle are clear, the structure is simple and compact, and the operation is reliable.

[0111] In one embodiment, such as Figure 6 As shown, the control method for the vehicle cooling system may further include the following steps S602 to S608.

[0112] S602: Obtain the operating status of the condenser in the vehicle's cooling system.

[0113] S604: When the first water pump is not working and the condenser is working, control the fan of the cooling module in the vehicle cooling system to operate at a first speed. The condenser is part of the vehicle's air conditioning system. When only the condenser is working, the fan speed can be set to the speed N1 required by the air conditioning system to meet its operational needs.

[0114] S606: When the first water pump is operating and the condenser is not operating, the fan speed is controlled in a closed loop based on the fluid temperature to keep the fluid temperature within a preset temperature range. The preset temperature range is a pre-set value and can be determined experimentally; it is not limited here. For example, the fluid temperature Thw acquired by the temperature detection module is maintained at Tf ± 2℃, where Tf is the preset temperature.

[0115] S608: When the first water pump and condenser are operating, control the fan to operate at the target speed. The target speed is the maximum value between the first speed and the required fan speed, and the required fan speed corresponds to the heat dissipation requirements of the vehicle's cooling system.

[0116] The above-mentioned vehicle cooling system control method controls the fan of the cooling module according to the working status of the first water pump and the condenser in the cooling system. This enables the cooling system and the air conditioning system (i.e., the condenser) to share a fan. While meeting the vehicle's heat dissipation requirements, it further reduces the number of parts, thereby reducing costs and saving space.

[0117] To better understand, the following will use... Figure 1 Taking the provided vehicle cooling system as an example, combined with Figure 7 The control method for the vehicle cooling system provided in the above embodiments will be described.

[0118] First, receive the temperature signals of each heat dissipation component. Specifically, receive the first temperature signal from the multi-function controller, the second temperature signal from the motor, and the third temperature signals from other components requiring heat dissipation. If any temperature signal is lost, control the electric water pump to operate at its maximum speed Nmax and report a related fault; the electric fan will operate according to the normal control strategy. If all signals are received, proceed to step S704.

[0119] Next, it is determined whether the body temperature of each component has reached the trigger temperature. Specifically, it is determined whether the body temperature Ta of the multi-function controller has reached the trigger temperature Tx1, the body temperature Tb of the power motor has reached the trigger temperature Tx2, and the body temperature Tc of other components requiring heat dissipation has reached the trigger temperature Tx3. If none of them have reached the trigger temperature Tx, the first water pump, i.e., the electric water pump, will not work. If the body temperature of any component reaches the trigger temperature Tx, proceed to step S706.

[0120] Next, the controller checks for faults in the electric water pump and water temperature sensor. If a fault is found, the controller needs to report the relevant fault and the electric water pump and electric fan enter fault mode according to the fault type. Specifically, if only the electric water pump is faulty, the electric fan operates according to the normal control strategy; if only the water temperature sensor is faulty, the electric water pump and electric fan are controlled to operate at the maximum speed Nmax; when multiple faults occur simultaneously, the electric water pump and electric fan are controlled according to the most severe handling measure. If there is no fault, the electric water pump is triggered to operate at the minimum speed Nmin, and the process proceeds to step S708.

[0121] Next, based on a comprehensive assessment of the temperatures of each component and the water temperature sensor (Thw), the operating speed of the electric water pump and the opening of the three-way proportional valve are controlled. The following situations may occur:

[0122] In normal operating mode, the output power and duration of the power motor, multi-function controller, and other heat dissipation components are below the threshold, and the temperature of the components themselves is used for verification. If Thw < Thw1, the electric water pump operates at the minimum speed Nmin, and the three-way proportional valve opens at the default proportional degree; if hw > Thw1, the water pump speed is linearly adjusted and hysteresis is 3℃ (calibrated) based on the water temperature sensor temperature Thw within the temperature range of Thw1 to Thw2, and the three-way proportional valve opens at the default proportional degree.

[0123] In the high-power output mode of the motor, that is, when the output power and duration of the power motor and the multi-function controller exceed the threshold, the temperature of the components is verified. At this time, the opening of the three-way proportional valve is adjusted to increase the opening of the motor and the multi-function branch, and the electric water pump speed is reduced accordingly. The control temperature threshold and the corresponding water pump speed are adjusted accordingly (the water temperature sensor temperature Thw is between Thw3 and Thw4, and the water pump speed is linearly adjusted with a hysteresis of 3℃ (calibration required).

[0124] When other heat dissipation components operate at high power, meaning their output power and duration exceed a threshold, the component body temperature is verified. At this time, the three-way proportional valve adjusts its opening to increase the opening of the branch circuit for other heat dissipation components. The electric water pump correspondingly reduces its speed, controlling the temperature threshold and adjusting the corresponding water pump speed accordingly (the water temperature sensor temperature Thw is between Thw5 and Thw6, and the water pump speed is linearly adjusted with a hysteresis of 3℃ (calibration required).

[0125] Finally, fan control is implemented based on the operating status of the electric water pump and the air conditioning system. When the electric water pump or the air conditioning system starts operating, the fan is triggered. The fan speed is controlled in a closed loop based on the sensor temperature Thw: if only the air conditioning system is operating, the fan speed is set to the air conditioning fan speed N1; if the air conditioning system is not operating and only the electric water pump is operating, the electric fan speed is synchronously controlled in a closed loop based on the water temperature sensor temperature Thw, maintaining the first water temperature sensor temperature Thw at Tf±2℃; if the air conditioning system and the electric water pump are operating simultaneously, the speed is controlled according to the larger of the air conditioning system fan speed N1 and the required fan speed.

[0126] The aforementioned vehicle cooling system and its control method, particularly the vehicle cooling system control method, takes into account the actual operating conditions of the vehicle. Under different operating conditions, the flow rate can be adjusted through a proportional valve to reduce water pump power consumption, achieve more reasonable water flow distribution, reduce system complexity, improve system control accuracy, thereby reducing system energy consumption and increasing driving range. The overall model and control principle are clear, the structure is simple and compact, and the operation is reliable. The vehicle cooling system has reserved return water and degassing interfaces for the heating system, which can reduce the number of parts, save space, and reduce production costs. Furthermore, through system design, the performance of the two systems is balanced, minimizing mutual interference.

[0127] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0128] Based on the same inventive concept, this application also provides a control device for a vehicle cooling system to implement the control method for the vehicle cooling system described above. The solution provided by this device is similar to the solution described in the above method; therefore, the specific limitations in one or more vehicle cooling system control device embodiments provided below can be found in the limitations of the vehicle cooling system control method described above, and will not be repeated here.

[0129] In one embodiment, such as Figure 8As shown, a control device 800 for a vehicle cooling system is provided. This device is applied to the vehicle cooling system provided in any of the above embodiments. The control device 800 includes a first control module 801 and a second control module 802. The first control module 801 is used to control the first water pump of the vehicle cooling system to operate at maximum speed and generate fault information when it fails to receive a temperature signal from the module to be cooled in the vehicle cooling system. The second control module 802 is used to determine whether the body temperature of the module to be cooled, carried by the temperature signal, exceeds a preset temperature threshold when it successfully receives the temperature signal, and to control the first water pump to operate if the body temperature exceeds the preset temperature threshold.

[0130] In one embodiment, the control device for the vehicle cooling system further includes an acquisition module, which is used to acquire the operating status of the first water pump and the temperature detection module of the vehicle cooling system, respectively, upon successful receipt of the temperature signal. The second control module is further configured to: control the fan of the cooling module in the vehicle cooling system to operate when the body temperature exceeds the preset temperature threshold, the first water pump malfunctions, and the temperature detection module is normal; control the first water pump to operate at the maximum speed and control the fan to operate when the body temperature exceeds the preset temperature threshold, the first water pump is normal, and the temperature detection module malfunctions; generate an alarm message when the body temperature exceeds the preset temperature threshold and both the first water pump and the temperature detection module malfunction; and control the first water pump to operate when the body temperature exceeds the preset temperature threshold and both the first water pump and the temperature detection module are normal.

[0131] In one embodiment, the second control module is further configured to acquire the output power of the module to be cooled, and to acquire the fluid temperature of the coolant flowing out of the cooling module using the temperature detection module; and to control the first water pump to operate based on the output power and the fluid temperature.

[0132] In one embodiment, the second control module is further configured to acquire the first power output by the first heat dissipation unit of the heat dissipation module and the second power output by the second heat dissipation unit of the heat dissipation module; control the first water pump to operate according to the first power, the second power and the fluid temperature; and control the opening degree of the three-way proportional valve of the vehicle cooling system according to the first power, the second power and the fluid temperature; wherein the opening degree includes a first opening degree and a second opening degree, the first opening degree corresponds to the first heat dissipation branch of the first heat dissipation unit and the second opening degree corresponds to the second heat dissipation branch of the second heat dissipation unit.

[0133] In one embodiment, the second control module is further configured to: control the first water pump to operate at minimum speed when the output power is less than the preset power threshold, the first duration is less than the first time threshold, and the fluid temperature is less than the first preset temperature; and control the three-way proportional valve to open the first heat dissipation branch according to the first preset ratio and the second heat dissipation branch according to the second preset ratio; wherein, the first duration is the duration during which the output power is less than the preset power threshold;

[0134] When the output power is less than the preset power threshold, the first duration is less than the first time threshold, and the fluid temperature is greater than the first preset temperature and less than the second preset temperature, the speed of the first water pump is linearly adjusted according to the preset hysteresis temperature, and the three-way proportional valve is controlled to open the first heat dissipation branch according to the first preset ratio and the second heat dissipation branch according to the second preset ratio; wherein, the second preset temperature is less than the first preset temperature.

[0135] When the first power is greater than the preset power threshold, the second duration is greater than the second time threshold, and the fluid temperature is greater than the third preset temperature and less than the fourth preset temperature, the speed of the first water pump is linearly adjusted according to the preset hysteresis temperature, and the three-way proportional valve is controlled to open the first heat dissipation branch according to the third preset ratio and the second heat dissipation branch according to the fourth preset ratio; wherein, the second duration refers to the duration for which the first power is greater than the preset power threshold; the third preset temperature is less than the fourth preset temperature, the third preset ratio is greater than the first preset ratio, and the fourth preset ratio is less than the second preset ratio;

[0136] When the second power is greater than the preset power threshold, the third duration is greater than the third time threshold, and the fluid temperature is greater than the fifth preset temperature and less than the sixth preset temperature, the speed of the first water pump is linearly adjusted according to the preset hysteresis temperature, and the three-way proportional valve is controlled to open the first heat dissipation branch according to the fifth preset ratio and the second heat dissipation branch according to the sixth preset ratio; wherein, the third duration refers to the duration for which the second sub-output power is greater than the preset power threshold; the fifth preset ratio is less than the first preset ratio, and the sixth preset ratio is greater than the second preset ratio.

[0137] In one embodiment, the control device for the vehicle cooling system further includes an acquisition module for acquiring the operating status of the condenser of the vehicle cooling system. The second control module is further configured to: control the fan of the cooling module in the vehicle cooling system to operate at a first speed when the first water pump is not operating and the condenser is operating; control the fan speed in a closed-loop manner based on the fluid temperature when the first water pump is operating and the condenser is not operating, so that the fluid temperature is within a preset temperature range; and control the fan to operate at a target speed when the first water pump is operating and the condenser is operating; wherein the target speed is the maximum value between the first speed and the required fan speed, and the required fan speed corresponds to the heat dissipation requirement of the vehicle cooling system.

[0138] The various modules in the control device of the aforementioned vehicle cooling system can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device in hardware form, or stored in the memory of a computer device in software form, so that the processor can call and execute the operations corresponding to each module.

[0139] In one embodiment, a computer device is provided, which may be a server, and its internal structure diagram may be as follows: Figure 9 As shown, the computer device includes a processor, memory, and a network interface connected via a system bus. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The database stores temperature signals, output power, etc. The network interface is used for communication with external terminals via a network connection. When the computer program is executed by the processor, it implements a control method for a vehicle cooling system.

[0140] Those skilled in the art will understand that Figure 9 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0141] In one embodiment, a computer device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of the control method for the vehicle cooling system provided in any of the above embodiments.

[0142] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the steps of the control method for the vehicle cooling system provided in any of the above embodiments.

[0143] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps of the control method for the vehicle cooling system provided in any of the above embodiments.

[0144] It should be noted that the data involved in this application (including but not limited to data used for analysis, stored data, and displayed data) are all information and data authorized by the user or fully authorized by all parties.

[0145] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0146] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0147] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A control method for a vehicle cooling system, characterized in that, Applied to a vehicle cooling system, the method includes: If the system fails to receive the temperature signal of the module to be cooled in the vehicle cooling system, it controls the first water pump of the vehicle cooling system to operate at maximum speed and generates fault information. If the temperature signal is successfully received, the working status of the temperature detection module of the first water pump and the vehicle cooling system is obtained respectively, and it is determined whether the body temperature of the module to be cooled carried by the temperature signal exceeds the preset temperature threshold. When the body temperature exceeds the preset temperature threshold, the first water pump fails, and the temperature detection module is normal, the fan of the cooling module in the vehicle cooling system is controlled to work. In the case where the body temperature exceeds the preset temperature threshold, the first water pump is normal and the temperature detection module is faulty, the first water pump is controlled to operate at the maximum speed and the fan is controlled to operate. If the body temperature exceeds the preset temperature threshold and both the first water pump and the temperature detection module malfunction, an alarm message is generated. When the body temperature exceeds the preset temperature threshold and both the first water pump and the temperature detection module are normal, the first power output by the first heat dissipation unit of the heat dissipation module and the second power output by the second heat dissipation unit of the heat dissipation module are obtained, and the fluid temperature of the coolant flowing out of the cooling module is obtained using the temperature detection module. When the output power of the module to be cooled is less than a preset power threshold, the first duration is less than a first time threshold, and the fluid temperature is less than a first preset temperature, the first water pump is controlled to operate at its minimum speed, and the three-way proportional valve is controlled to open the first cooling branch according to a first preset ratio and the second cooling branch according to a second preset ratio; wherein, the first duration is the duration during which the output power is less than the preset power threshold; the output power is the sum of the first power and the second power; When the output power is less than the preset power threshold, the first duration is less than the first time threshold, and the fluid temperature is greater than the first preset temperature and less than the second preset temperature, the speed of the first water pump is linearly adjusted according to the preset hysteresis temperature, and the three-way proportional valve is controlled to open the first heat dissipation branch according to the first preset ratio and the second heat dissipation branch according to the second preset ratio; wherein, the second preset temperature is greater than the first preset temperature. When the first power is greater than the preset power threshold, the second duration is greater than the second time threshold, and the fluid temperature is greater than the third preset temperature and less than the fourth preset temperature, the speed of the first water pump is linearly adjusted according to the preset hysteresis temperature, and the three-way proportional valve is controlled to open the first heat dissipation branch according to the third preset ratio and the second heat dissipation branch according to the fourth preset ratio; wherein, the second duration refers to the duration for which the first power is greater than the preset power threshold; the third preset temperature is less than the fourth preset temperature, the third preset ratio is greater than the first preset ratio, and the fourth preset ratio is less than the second preset ratio; When the second power is greater than the preset power threshold, the third duration is greater than the third time threshold, and the fluid temperature is greater than the fifth preset temperature and less than the sixth preset temperature, the speed of the first water pump is linearly adjusted according to the preset hysteresis temperature, and the three-way proportional valve is controlled to open the first heat dissipation branch according to the fifth preset ratio and the second heat dissipation branch according to the sixth preset ratio; wherein, the third duration refers to the duration for which the second power is greater than the preset power threshold; the fifth preset ratio is less than the first preset ratio, and the sixth preset ratio is greater than the second preset ratio.

2. The method according to claim 1, characterized in that, The method further includes: Obtain the operating status of the condenser in the vehicle's cooling system; When the first water pump is not working and the condenser is working, the fan of the cooling module in the vehicle cooling system is controlled to operate at a first speed. When the first water pump is working and the condenser is not working, the fan speed is controlled in a closed loop according to the fluid temperature so that the fluid temperature is within a preset temperature range; When the first water pump is working and the condenser is working, the fan is controlled to operate at a target speed; wherein, the target speed is the maximum value between the first speed and the required fan speed, and the required fan speed corresponds to the heat dissipation requirements of the vehicle cooling system.

3. A vehicle cooling system, characterized in that, The vehicle cooling system is controlled using the control method described in claim 1 or 2.

4. The vehicle cooling system according to claim 3, characterized in that, The vehicle cooling system includes a cooling module, a first return water tee, a second return water tee, a degassing tee, an expansion tank, a first water pump, and a cooling module. The expansion tank's return water inlet is connected to the inlet of the first return water tee, and its degassing inlet is connected to the outlet of the degassing tee. The expansion tank buffers changes in coolant volume. The first outlet of the first return water tee is connected to the first inlet of the second return water tee, and the second outlet of the first return water tee is connected to the heating circuit of the vehicle's heating system. The first return water tee diverts the coolant flowing from the expansion tank. The second inlet of the second return water tee is connected to the outlet of the cooling module. The outlet of the first water pump is connected to the inlet of the first water pump, and the second return water tee is used to collect the coolant flowing out of the cooling module and the expansion tank; the outlet of the first water pump is connected to the inlet of the module to be cooled, and the first water pump is used to drive the coolant; the outlet of the module to be cooled is connected to the inlet of the cooling module, and the module to be cooled is used to dissipate heat through the coolant; the cooling module is used to dissipate heat from the coolant; the first inlet of the degassing tee is connected to the degassing port of the outlet of the module to be cooled, and the second inlet of the degassing tee is used to connect to the degassing circuit of the vehicle heating system, and the degassing tee is used to collect the coolant flowing out of the vehicle cooling system and the vehicle heating system.

5. The vehicle cooling system according to claim 4, characterized in that, The vehicle cooling system further includes a first degassing throttle valve and a second degassing throttle valve; wherein, the first degassing throttle valve is disposed on a first degassing path between the first inlet of the degassing tee and the degassing port of the heat dissipation module, and the first degassing throttle valve is used to regulate the flow rate of the coolant in the first degassing path and the pressure in the first degassing path; the second degassing throttle valve is disposed on a second degassing path between the second inlet of the degassing tee and the degassing port of the heating circuit of the vehicle heating system, and the second degassing throttle valve is used to regulate the flow rate of the coolant in the second degassing path and the pressure in the second degassing path.

6. The vehicle cooling system according to claim 4, characterized in that, The vehicle cooling system also includes a temperature detection module, which is connected to the outlet of the cooling module and the second inlet of the second return water tee, respectively. The temperature detection module is used to obtain the fluid temperature of the coolant flowing out of the cooling module.

7. The vehicle cooling system according to claim 4, characterized in that, The vehicle cooling system further includes a three-way proportional valve and a manifold. The cooling module includes a first cooling unit and a second cooling unit. The inlet of the three-way proportional valve is connected to the outlet of the first water pump, the first outlet of the three-way proportional valve is connected to the inlet of the first cooling unit, and the second outlet of the three-way proportional valve is connected to the inlet of the second cooling unit. The three-way proportional valve is used to regulate the flow rate of the coolant flowing from the first water pump to the first cooling unit and the second cooling unit. The first inlet of the manifold is connected to the outlet of the first cooling unit, the second inlet of the manifold is connected to the outlet of the second cooling unit, and the outlet of the manifold is connected to the inlet of the cooling module. The manifold is used to collect the coolant flowing from the first cooling unit and the second cooling unit.

8. The vehicle cooling system according to claim 4, characterized in that, The cooling module includes a radiator and a fan. The inlet of the radiator is connected to the outlet of the module to be cooled, and the outlet of the radiator is connected to the second inlet of the second return tee. The radiator is used to dissipate heat from the coolant. The fan is located on the first side of the radiator and is used to dissipate heat from the radiator. The vehicle cooling system also includes a condenser located on the second side of the radiator, which is used to dissipate heat from the vehicle; wherein the first side and the second side are two sides of the radiator that are arranged opposite to each other.

9. A vehicle thermal management system, characterized in that, The vehicle thermal management system includes: The vehicle cooling system as described in any one of claims 3-8; The vehicle heating system has a heating circuit that is connected to the return water port of the expansion tank in the vehicle cooling system via a first return water tee in the vehicle cooling system, and a degassing circuit that is connected to the degassing port of the expansion tank via a degassing tee in the vehicle cooling system. The vehicle heating system is used to heat the vehicle.

10. The vehicle thermal management system according to claim 9, characterized in that, The vehicle heating system includes a second water pump, a heater, and a heater core. The inlet of the second water pump is connected to the second outlet of the degassing tee, and the outlet of the second water pump is connected to the inlet of the heater. The second water pump drives the coolant to flow in the heating circuit. The inlet of the heater is connected to the second inlet of the degassing tee, and the outlet of the heater is connected to the heater core. The heater heats the coolant. The outlet of the heater core is connected to the second water pump, and the heater core heats the coolant.

11. A vehicle, characterized in that, The vehicle includes a vehicle cooling system as described in any one of claims 3-8, or a vehicle thermal management system as described in claim 9 or 10.

12. A control device for a vehicle cooling system, characterized in that, The device is applied to a vehicle cooling system as described in any one of claims 3-8, the device comprising: The first control module is used to control the first water pump of the vehicle cooling system to operate at maximum speed and generate fault information when it fails to receive the temperature signal of the module to be cooled in the vehicle cooling system. The second control module is used to determine whether the body temperature of the module to be cooled, carried by the temperature signal, exceeds a preset temperature threshold when the temperature signal is successfully received, and to control the first water pump to work when the body temperature exceeds the preset temperature threshold.

13. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method of claim 1 or 2.

14. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method of claim 1 or 2.

15. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method of claim 1 or 2.

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