Vehicle thermal management method, device and system, vehicle, medium and equipment

Abstract

The invention discloses a vehicle thermal management method, device and system, a vehicle, a medium and equipment, and the method comprises the steps: collecting the external environment temperature of the vehicle, the temperature of mixed air passing through an intercooling heat dissipation branch, and the temperature of cooling liquid of an electric drive assembly, so as to control the operation of an execution part; namely, the electric heat dissipation branch and the intercooling heat dissipation branch are merged into the same cooling loop so as to realize heat transfer between the electric heat dissipation branch and the intercooling heat dissipation branch; and according to the environment temperature, the mixed air temperature and the cooling liquid temperature of the electric drive assembly, an execution part is controlled to ensure the gas temperature before and after turbocharging, so that the combustion stability is improved, the service life of the turbocharging system is prolonged, the starting temperature of an EGR cooler is increased, and low-temperature oil consumption is reduced. And meanwhile, it is guaranteed that the electric drive assembly operates in a better temperature range, so that the power loss of the electric drive assembly at the low temperature is reduced.

Description

Technical Field

[0001] The present application relates to the field of vehicle thermal management technology, and in particular to a vehicle thermal management method, device, system, vehicle, medium and equipment. Background Art

[0002] For extended-range and hybrid electric vehicles, the viscosity of the cooling oil of the oil-cooled motor increases in low-temperature environments, which increases the power consumption of the oil pump, and the oil stirring power loss of the reducer and rotor is large, which significantly affects the efficiency of the motor assembly. More and more extended-range and hybrid electric vehicles are equipped with turbocharging systems. For turbocharging systems, turning on EGR when the ambient temperature is low will cause the water vapor in the exhaust gas to be cooled into water droplets. When it enters the turbocharger, it causes corrosion and affects the life of the turbocharger. When the water droplets enter the intake manifold, it will also cause combustion instability. Therefore, a thermal management system and method that can keep the motor assembly and turbocharged gas warm in low-temperature environments is needed. Summary of the invention

[0003] In order to solve the above technical problems, the present application is proposed. The embodiments of the present application provide a vehicle thermal management method, device, system, vehicle, medium and equipment.

[0004] According to one aspect of the present application, a vehicle thermal management method is provided, which is applied to a vehicle thermal management system, wherein the vehicle thermal management system includes an electric drive heat dissipation branch and an intercooler heat dissipation branch, wherein the electric drive heat dissipation branch is used to dissipate heat from an electric drive assembly, and the intercooler heat dissipation branch is connected in parallel with the electric drive heat dissipation branch, and the intercooler heat dissipation branch is used to dissipate heat from turbocharged gas; the vehicle thermal management method includes: collecting the ambient temperature outside the vehicle, the mixed air temperature after passing through the intercooler heat dissipation branch, and the coolant temperature of the electric drive assembly; according to the ambient temperature, the mixed air temperature, and the coolant temperature of the electric drive assembly, controlling the operation of the execution component of the thermal management system to reduce the difference between the coolant temperature of the electric drive assembly and the coolant target temperature, and the difference between the mixed air temperature and the mixed air target temperature; wherein the execution component is a component that changes the thermal management effect by changing its operating state.

[0005] In one embodiment, the electric drive heat dissipation branch includes an electric drive radiator, the intercooler heat dissipation branch includes an engine intercooler, the executive component includes an electric drive water pump, a cooling fan and an active air intake grille, and the electric drive water pump is arranged in the electric drive heat dissipation branch; wherein, controlling the operation of the executive component of the thermal management system according to the ambient temperature, the mixed air temperature and the coolant temperature of the electric drive assembly to reduce the difference between the coolant temperature of the electric drive assembly and the coolant target temperature, and the difference between the mixed air temperature and the mixed air target temperature includes: adjusting the rotation speed of the electric drive water pump, the rotation speed of the cooling fan and the opening of the active air intake grille according to the difference between the coolant temperature of the electric drive assembly and the coolant target temperature, and the difference between the mixed air temperature and the mixed air target temperature, so as to reduce the difference between the coolant temperature of the electric drive assembly and the coolant target temperature, and the difference between the mixed air temperature and the mixed air target temperature.

[0006] In one embodiment, the actuator includes a three-way valve and a three-way pipe, the first valve port and the second valve port of the three-way valve are respectively connected to the first connection end of the electric drive heat dissipation branch and the intercooler heat dissipation branch, the first pipe port and the second pipe port of the three-way pipe are respectively connected to the second connection end of the electric drive heat dissipation branch and the intercooler heat dissipation branch, and the third valve port of the three-way valve is connected to the third pipe port of the three-way pipe; wherein, according to the ambient temperature, the mixed air temperature and the coolant temperature of the electric drive assembly, the operation of the actuator of the thermal management system is controlled, including: if the ambient temperature is lower than a preset first temperature threshold, and the coolant temperature of the electric drive assembly is lower than a preset second temperature threshold, the first valve port of the three-way valve is closed, and the second valve port and the third valve port of the three-way valve are opened.

[0007] In one embodiment, the thermal management system also includes an engine cooling circuit; wherein the vehicle thermal management method also includes: adjusting the speed of the engine water pump in the engine cooling circuit according to the mixed air temperature to reduce the difference between the mixed air temperature and the mixed air target temperature.

[0008] In one embodiment, the vehicle thermal management method further includes: if the engine coolant temperature is greater than a preset third temperature threshold, opening the EGR cooler to guide the engine exhaust gas into the turbocharger to obtain the turbocharged gas.

[0009] According to another aspect of the present application, a vehicle thermal management device is provided, which is arranged in the vehicle thermal management system, and the vehicle thermal management system includes an electric drive heat dissipation branch and an intercooler heat dissipation branch, wherein the electric drive heat dissipation branch is used to dissipate heat from the electric drive assembly, and the intercooler heat dissipation branch is connected in parallel with the electric drive heat dissipation branch, and the intercooler heat dissipation branch is used to dissipate heat from the turbocharged gas; the vehicle thermal management device includes: a temperature acquisition module, used to collect the ambient temperature outside the vehicle, the mixed air temperature after passing through the intercooler heat dissipation branch, and the coolant temperature of the electric drive assembly; a temperature control module, used to control the operation of the execution component of the thermal management system according to the ambient temperature, the mixed air temperature and the coolant temperature of the electric drive assembly, so as to reduce the difference between the coolant temperature of the electric drive assembly and the coolant target temperature, and the difference between the mixed air temperature and the mixed air target temperature; wherein the execution component is a component that changes the thermal management effect by changing its operating state.

[0010] According to another aspect of the present application, a vehicle thermal management system is provided, comprising: an electric drive heat dissipation branch; wherein the electric drive heat dissipation branch is used to dissipate heat from an electric drive assembly; an intercooler heat dissipation branch; wherein the intercooler heat dissipation branch is connected in parallel with the electric drive heat dissipation branch, and the intercooler heat dissipation branch is used to dissipate heat from turbocharged gas; a vehicle thermal management device as described above.

[0011] According to another aspect of the present application, a vehicle is provided, comprising the vehicle thermal management system as described above.

[0012] According to another aspect of the present application, a computer-readable storage medium is provided, wherein the storage medium stores a computer program, and the computer program is used to execute any of the above methods.

[0013] According to another aspect of the present application, an electronic device is provided, comprising: a processor; a memory for storing instructions executable by the processor; and the processor is used to execute any of the above-described methods.

[0014] The present application provides a vehicle thermal management method, device, system, vehicle, medium and equipment, wherein the vehicle thermal management system includes an electric drive heat dissipation branch and an intercooler heat dissipation branch, wherein the electric drive heat dissipation branch is used to dissipate heat for the electric drive assembly, the intercooler heat dissipation branch is connected in parallel with the electric drive heat dissipation branch, and the intercooler heat dissipation branch is used to dissipate heat for the turbocharged gas, by collecting the ambient temperature outside the vehicle, the mixed air temperature after passing through the intercooler heat dissipation branch, and the coolant temperature of the electric drive assembly; according to the ambient temperature, the mixed air temperature after passing through the intercooler heat dissipation branch, and the coolant temperature of the electric drive assembly, the operation of the execution components of the thermal management system is controlled to reduce the difference between the coolant temperature of the electric drive assembly and the coolant target temperature The difference between the mixed air temperature and the target mixed air temperature; wherein the executive component is a component that changes the thermal management effect by changing its operating state; that is, the electric drive cooling branch and the intercooler cooling branch are merged into the same cooling circuit to achieve heat transfer between the two; and according to the ambient temperature, the mixed air temperature and the coolant temperature of the electric drive assembly, the executive components of the thermal management system are controlled to ensure the gas temperature before and after turbocharging, thereby improving combustion stability and increasing the service life of the turbocharger system, increasing the opening temperature of the EGR cooler, reducing low-temperature fuel consumption, and at the same time ensuring that the electric drive assembly operates in a more optimal temperature range to reduce the power loss of the electric drive assembly at low temperatures. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] By describing the embodiments of the present application in more detail in conjunction with the accompanying drawings, the above and other purposes, features and advantages of the present application will become more apparent. The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings, the same reference numerals generally represent the same components or steps.

[0016] Figure 1 This is a system diagram to which this application applies.

[0017] Figure 2 It is a flow chart of a vehicle thermal management method provided by an exemplary embodiment of the present application.

[0018] Figure 3 It is a schematic diagram of the radiator structure for vehicle thermal management provided by an exemplary embodiment of the present application.

[0019] Figure 4 It is a schematic diagram of the structure of a vehicle thermal management device provided by an exemplary embodiment of the present application.

[0020] Figure 5 It is a structural diagram of an electronic device provided by an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0021] Below, the exemplary embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application, and it should be understood that the present application is not limited to the exemplary embodiments described here.

[0022] Figure 1 This is the system diagram to which this application applies. Figure 1 As shown, the vehicle thermal management system includes: an electric drive heat dissipation branch and an intercooler heat dissipation branch; wherein the electric drive heat dissipation branch specifically includes an electric drive radiator for dissipating heat from the electric drive assembly, and the intercooler heat dissipation branch specifically includes an engine intercooler and an intercooler radiator for dissipating heat from the turbocharged gas, and the intercooler heat dissipation branch is connected in parallel with the electric drive heat dissipation branch. Specifically, the vehicle thermal management system provided in the present application is applied to hybrid or extended-range vehicles, which include an engine and an electric drive assembly, wherein the electric drive assembly is composed of a motor and a battery, and the electric drive assembly generates heat during operation. In order to ensure that the electric drive assembly operates within a suitable operating temperature range, a heat dissipation circuit is required to dissipate heat from the electric drive assembly. As shown Figure 1 As shown, the present application forms an electric drive heat dissipation circuit by setting an electric drive heat dissipation branch and an electric drive assembly (specifically, a heat dissipation structure in the electric drive assembly, such as a motor cooling channel and a battery cooling channel, etc.) in series to achieve heat dissipation treatment of the electric drive assembly; at the same time, the present application sets the intercooler heat dissipation branch to be connected in parallel with the electric drive heat dissipation branch, thereby achieving heat exchange between the intercooler heat dissipation branch and the electric drive heat dissipation branch to improve the heat utilization rate of the entire vehicle.

[0023] Specifically, when the vehicle is driving in the extended range mode, in order to achieve the target speed, the electric drive assembly needs to provide driving power. In the process of the engine providing mechanical power by burning fuel and converting it into electrical power through the generator, exhaust gas is continuously discharged. The engine exhaust gas is cooled by the EGR cooler and mixed with the air entering the engine air filter to form a mixed gas. The mixed gas is compressed by the turbocharger to obtain high-temperature gas. The high-temperature gas enters the engine intake manifold after being cooled by the engine intercooler to achieve the reuse of the engine exhaust gas. In the process of forming the turbocharged gas, the temperature of the EGR cooler, the temperature of the air entering the engine air filter (ambient temperature) and the temperature of the engine intercooler will affect the temperature of the mixed air entering the engine manifold. Similarly, when the electric drive assembly provides driving power, the electric drive assembly will generate heat. The working temperature of the electric drive assembly is too high or too low, which is not conducive to the working efficiency and loss of the electric drive assembly. When the temperature of the electric drive assembly is high, the electric drive heat dissipation branch is used to cool the electric drive assembly, and the temperature of the electric drive heat dissipation branch affects the temperature of the engine intercooler, which in turn affects the temperature of the mixed air.

[0024] Figure 2FIG. 1 is a flow chart of a vehicle thermal management method provided by an exemplary embodiment of the present application. The vehicle thermal management method is applied to the above-mentioned vehicle thermal management system; Figure 2 As shown, the vehicle thermal management method includes the following steps: Step 210: Collect the ambient temperature outside the vehicle, the mixed air temperature after passing through the intercooler heat dissipation branch, and the coolant temperature of the electric drive assembly.

[0025] The present application collects the ambient temperature outside the vehicle, the coolant temperature of the electric drive assembly, and the mixed air temperature after passing through the intercooler heat dissipation branch in real time to obtain the operating temperature of the electric drive assembly (specifically including the cooling oil temperature of the oil-cooled motor, etc.) and the temperature of the mixed air entering the engine manifold, so that the thermal management status and effect can be judged according to the operating temperature of the electric drive assembly and the mixed air temperature entering the engine manifold.

[0026] Step 220: Based on the ambient temperature, the mixed air temperature, and the coolant temperature of the electric drive assembly, control the operation of the executive components of the thermal management system to reduce the difference between the coolant temperature of the electric drive assembly and the coolant target temperature, and the difference between the mixed air temperature and the mixed air target temperature.

[0027] Among them, the executive component is a component that changes the thermal management effect by changing its operating state. After knowing the ambient temperature, the mixed air temperature and the coolant temperature of the electric drive assembly, the present application controls the operation of the executive components (including water pumps, fans, etc.) of the thermal management system based on the ambient temperature, the mixed air temperature and the coolant temperature of the electric drive assembly, and adjusts the coolant temperature in the electric drive heat dissipation circuit and the mixed air temperature of the gas entering the engine manifold to reduce the difference (for example, less than 10 degrees) between the coolant temperature of the electric drive assembly and the coolant target temperature (for example, greater than 50 degrees), and the difference between the mixed air temperature and the mixed air target temperature (for example, 60 degrees), that is, adjust the coolant temperature of the electric drive assembly to be close to the coolant target temperature, and adjust the mixed air temperature to be close to the mixed air target temperature.

[0028] The present application provides a vehicle thermal management method, the vehicle thermal management system includes an electric drive heat dissipation branch and an intercooler heat dissipation branch, wherein the electric drive heat dissipation branch is used to dissipate heat for the electric drive assembly, the intercooler heat dissipation branch is connected in parallel with the electric drive heat dissipation branch, and the intercooler heat dissipation branch is used to dissipate heat for the turbocharged gas, by collecting the ambient temperature outside the vehicle, the mixed air temperature after passing through the intercooler heat dissipation branch, and the coolant temperature of the electric drive assembly; according to the ambient temperature, the mixed air temperature after passing through the intercooler heat dissipation branch, and the coolant temperature of the electric drive assembly, the operation of the execution component of the thermal management system is controlled to reduce the difference between the coolant temperature of the electric drive assembly and the coolant target temperature The difference between the mixed air temperature and the target mixed air temperature; wherein the executive component is a component that changes the thermal management effect by changing its operating state; that is, the electric drive cooling branch and the intercooler cooling branch are merged into the same cooling circuit to achieve heat transfer between the two; and according to the ambient temperature, the mixed air temperature and the coolant temperature of the electric drive assembly, the executive components of the thermal management system are controlled to ensure the gas temperature before and after turbocharging, thereby improving combustion stability and increasing the service life of the turbocharging system, reducing low-temperature fuel consumption, and at the same time ensuring that the electric drive assembly operates in a more optimal temperature range to reduce the power loss of the electric drive assembly at low temperatures.

[0029] In one embodiment, the electric drive heat dissipation branch includes an electric drive radiator, the intercooler heat dissipation branch includes an engine intercooler, the executive component includes an electric drive water pump, a cooling fan and an active air intake grille, and the electric drive water pump is arranged in the electric drive heat dissipation branch; wherein, the specific implementation method of the above step 220 may be: according to the difference between the coolant temperature of the electric drive assembly and the coolant target temperature, and the difference between the mixed air temperature and the mixed air target temperature, adjust the speed of the electric drive water pump, the speed of the cooling fan and the opening of the active air intake grille to reduce the difference between the coolant temperature of the electric drive assembly and the coolant target temperature, and the difference between the mixed air temperature and the mixed air target temperature.

[0030] Since the motor generates heat when driving the vehicle, in order to ensure that the motor works within an appropriate temperature range, when the heat generated by the motor is high, the electric drive water pump will be turned on to drive the flow of coolant in the electric drive cooling circuit, so that the coolant can take away the heat of the motor to achieve the heat dissipation of the motor. Figure 3As shown, the coolant exchanges heat with the outside air when flowing through the electric drive radiator to dissipate the heat in the coolant, and the heat exchange efficiency between the coolant and the outside air is related to the air volume entering the electric drive radiator and the speed of the cooling fan that introduces outside air to the electric drive radiator. Therefore, the present application adjusts the speed of the electric drive water pump, the speed of the cooling fan and the opening of the active air intake grille to reduce the difference between the coolant temperature of the electric drive assembly and the coolant target temperature, and the difference between the mixed air temperature and the mixed air target temperature, so that the coolant temperature of the electric drive assembly reaches the coolant target temperature and the mixed air temperature reaches the mixed air target temperature, thereby realizing closed-loop control of the coolant temperature and the mixed air temperature of the electric drive assembly.

[0031] In one embodiment, the execution component includes a three-way valve and a three-way pipe, the first valve port and the second valve port of the three-way valve are respectively connected to the first connection end of the electric drive heat dissipation branch and the intercooler heat dissipation branch, the first pipe port and the second pipe port of the three-way pipe are respectively connected to the second connection end of the electric drive heat dissipation branch and the intercooler heat dissipation branch, and the third valve port of the three-way valve is connected to the third pipe port of the three-way pipe; wherein, the specific implementation method of the above step 220 can be: if the ambient temperature is lower than the preset first temperature threshold and the coolant temperature of the electric drive assembly is lower than the preset second temperature threshold, the first valve port of the three-way valve is closed, and the second valve port and the third valve port of the three-way valve are opened.

[0032] If the ambient temperature outside the vehicle is low (for example, below 8 degrees), and the coolant temperature of the vehicle's electric drive assembly is also low, for example, the vehicle has just started in a cold environment, and the motor needs to heat up quickly to reduce its energy consumption. If the coolant of the electric drive assembly flows through the electric drive radiator to dissipate heat, it will cause the heat loss of the motor. Therefore, the present application sets a three-way valve and a three-way pipe between the electric drive heat dissipation branch and the intercooler heat dissipation branch, and closes the first valve port of the three-way valve when the motor needs to heat up quickly, and opens the second valve port and the third valve port of the three-way valve to short-circuit the electric drive heat dissipation branch, so that the coolant in the electric drive heat dissipation circuit only flows through the electric drive assembly and the intercooler heat dissipation branch, so as to achieve rapid heating of the motor, and use the coolant in the electric drive heat dissipation circuit to heat the engine intercooler, so as to achieve the mixed air insulation entering the engine manifold. Preferably, the present application can further close the cooling fan and the active air intake grille to reduce the heat loss of the intercooler heat dissipation branch, thereby further accelerating the heating of the motor. It should be understood that the present application can also select the speed of the electric water pump according to the needs of the actual application scenario. For example, when the vehicle starts and the engine has not yet started, there is no need to insulate the intercooler cooling branch. The speed of the electric water pump can be reduced or even stopped to retain the heat generated by the electric drive assembly in the electric drive assembly, thereby accelerating the heating of the motor.

[0033] It should be understood that the present application can open the first valve port, the second valve port and the third valve port of the three-way valve to realize the electric drive heat dissipation branch circuit being incorporated into the heat dissipation circuit to dissipate heat from the electric drive assembly. Specifically, when any one of the following three conditions is met, it can be determined that the electric drive heat dissipation circuit has a heat dissipation demand: the temperature of the electric drive assembly (for example, the temperature of the motor stator and rotor) is greater than a preset temperature (for example, 100°C), the mixed air temperature is greater than a preset temperature (for example, 60°C), and the cooling water temperature of the electric drive assembly is greater than a preset temperature (for example, 60°C). At this time, the first valve port, the second valve port and the third valve port of the three-way valve can be opened to realize the electric drive heat dissipation branch circuit (electric drive radiator) being incorporated into the heat dissipation circuit to dissipate heat from the coolant in the electric drive heat dissipation circuit, so as to reduce the mixed air temperature and the temperature of the electric drive assembly.

[0034] In one embodiment, the thermal management system also includes an engine cooling circuit; wherein the above-mentioned vehicle thermal management method may also include: adjusting the speed of the engine water pump in the engine cooling circuit according to the mixed air temperature to reduce the difference between the mixed air temperature and the mixed air target temperature.

[0035] The engine cooling circuit is a circuit formed by the engine cooling water jacket and accessories, the engine water pump, and the EGR cooler in series. After the engine is started, the engine will also generate a lot of heat during operation, and the temperature of the engine cooling circuit will also change with the heat generated by the engine. The exhaust gas discharged by the engine exhaust manifold will pass through the EGR cooler in the engine cooling circuit. Therefore, the temperature of the engine cooling circuit will affect the temperature of the turbocharged gas entering the intercooling cooling branch, and then affect the temperature of the mixed gas after mixing with the air filter intake and the amount of water vapor condensation of the mixed gas, thereby causing water drop pitting of the turbocharger. At this time, the speed of the engine water pump in the engine cooling circuit can be further adjusted to adjust the temperature of the engine cooling circuit, and then adjust the temperature of the exhaust gas passing through the EGR cooler, and then adjust the temperature of the mixed gas, and then adjust the temperature of the turbocharged gas entering the intercooling cooling branch, and finally adjust the temperature of the mixed air entering the engine manifold. Preferably, the present application can also further adjust the speed of the cooling fan and the opening of the active air intake grille to increase the adjustment range and speed of the engine cooling circuit temperature, thereby achieving the adjustment of the mixed air temperature.

[0036] In one embodiment, the thermal management system also includes an engine cooling circuit; wherein, the specific implementation method of the above step 220 may be: according to the ambient temperature, the mixed air temperature, the coolant temperature of the electric drive assembly and the engine coolant temperature of the engine cooling circuit, the operation of the executive components of the thermal management system is controlled to reduce the difference between the coolant temperature of the electric drive assembly and the coolant target temperature, and the difference between the mixed air temperature and the mixed air target temperature.

[0037] Since the ambient temperature determines the temperature of the outside air entering the engine and the temperature of the cooling air entering the intercooler radiator, electric drive radiator and engine radiator, the engine coolant temperature affects the temperature of the turbocharged gas entering the intercooler cooling branch. The present application combines the ambient temperature, mixed air temperature, coolant temperature of the electric drive assembly and engine coolant temperature to control the operation of the engine water pump, electric drive water pump, cooling fan and active air intake grille to achieve closed-loop control of the coolant temperature and mixed air temperature of the electric drive assembly, so that the coolant temperature and mixed air temperature of the electric drive assembly reach the target value.

[0038] In one embodiment, the vehicle thermal management method may further include: if the engine coolant temperature is greater than a preset third temperature threshold, opening the EGR cooler to guide the engine exhaust gas into the turbocharger to obtain turbocharged gas.

[0039] When the engine temperature is low, the exhaust gas temperature is also low, and the exhaust gas is even lower after being cooled by the EGR cooler. If the exhaust gas is introduced into the engine at this time, it may cause problems such as incomplete combustion. Therefore, the present application opens the EGR cooler only when the engine coolant temperature reaches a certain temperature threshold (for example, greater than 70 degrees), and the engine exhaust temperature can also be considered. For example, if the difference between the engine exhaust temperature and the engine coolant temperature is too large, it may cause the exhaust gas discharged from the engine exhaust manifold to condense. Therefore, the present application opens the EGR cooler under the condition that the engine coolant temperature and the engine exhaust temperature meet the condition that the exhaust gas discharged from the engine exhaust manifold does not condense, so as to introduce the engine exhaust gas into the turbocharger to obtain turbocharged gas, that is, to open the turbocharger system under the premise of ensuring sufficient engine combustion.

[0040] In one embodiment, if Figure 1 As shown, the above-mentioned electric drive heat dissipation branch may also include: a cooling kettle, which is arranged in parallel or in series with the electric drive radiator for storing coolant.

[0041] The present application arranges a cooling kettle in parallel or in series with the electric drive radiator in the electric drive heat dissipation circuit, uses the cooling kettle to store coolant, and replenishes coolant when the coolant in the electric drive heat dissipation circuit is insufficient. At the same time, excess air in the electric drive heat dissipation circuit can be discharged to ensure the heat dissipation effect of the electric drive heat dissipation circuit.

[0042] Figure 4 : is a schematic diagram of the structure of a vehicle thermal management device provided by an exemplary embodiment of the present application. The vehicle thermal management device is arranged in a vehicle thermal management system, and the vehicle thermal management system includes an electric drive heat dissipation branch and an intercooler heat dissipation branch, wherein the electric drive heat dissipation branch is used to dissipate heat for the electric drive assembly, and the intercooler heat dissipation branch is connected in parallel with the electric drive heat dissipation branch, and the intercooler heat dissipation branch is used to dissipate heat for the turbocharged gas; Figure 4 As shown, the vehicle thermal management device 40 includes: a temperature acquisition module 41, which is used to collect the ambient temperature outside the vehicle, the mixed air temperature after passing through the intercooler heat dissipation branch, and the coolant temperature of the electric drive assembly; a temperature control module 42, which is used to control the operation of the execution components of the thermal management system according to the ambient temperature, the mixed air temperature and the coolant temperature of the electric drive assembly, so as to reduce the difference between the coolant temperature of the electric drive assembly and the coolant target temperature, and the difference between the mixed air temperature and the mixed air target temperature.

[0043] The present application provides a vehicle thermal management device, the vehicle thermal management system includes an electric drive heat dissipation branch and an intercooler heat dissipation branch, wherein the electric drive heat dissipation branch is used to dissipate heat for the electric drive assembly, the intercooler heat dissipation branch is connected in parallel with the electric drive heat dissipation branch, the intercooler heat dissipation branch is used to dissipate heat for the turbocharged gas, and the ambient temperature outside the vehicle, the mixed air temperature after passing through the intercooler heat dissipation branch, and the coolant temperature of the electric drive assembly are collected through a temperature collection module 41; the temperature control module 42 controls the operation of the execution components of the thermal management system according to the ambient temperature, the mixed air temperature after passing through the intercooler heat dissipation branch, and the coolant temperature of the electric drive assembly, so as to reduce the difference between the coolant temperature of the electric drive assembly and the coolant target temperature. the difference between the mixed air temperature and the target mixed air temperature; wherein the executive component is a component that changes the thermal management effect by changing its operating state; that is, the electric drive cooling branch and the intercooler cooling branch are merged into the same cooling circuit to achieve heat transfer between the two; and according to the ambient temperature, the mixed air temperature and the coolant temperature of the electric drive assembly, the executive component of the thermal management system is controlled to ensure the gas temperature before and after turbocharging, thereby improving combustion stability and increasing the service life of the turbocharging system, increasing the opening temperature of the EGR cooler, reducing low-temperature fuel consumption, and at the same time ensuring that the electric drive assembly operates in a more optimal temperature range to reduce the power loss of the electric drive assembly at low temperatures.

[0044] In one embodiment, the electric drive heat dissipation branch includes an electric drive radiator, the intercooler heat dissipation branch includes an engine intercooler, the actuator includes an electric drive water pump, a cooling fan and an active air intake grille, and the electric drive water pump is arranged in the electric drive heat dissipation branch; wherein, the above-mentioned temperature control module 42 can be further configured to: according to the difference between the coolant temperature of the electric drive assembly and the coolant target temperature, and the difference between the mixed air temperature and the mixed air target temperature, adjust the speed of the electric drive water pump, the speed of the cooling fan and the opening of the active air intake grille to reduce the difference between the coolant temperature of the electric drive assembly and the coolant target temperature, and the difference between the mixed air temperature and the mixed air target temperature.

[0045] In one embodiment, the execution component includes a three-way valve and a three-way pipe, the first valve port and the second valve port of the three-way valve are respectively connected to the first connection end of the electric drive heat dissipation branch and the intercooler heat dissipation branch, the first pipe port and the second pipe port of the three-way pipe are respectively connected to the second connection end of the electric drive heat dissipation branch and the intercooler heat dissipation branch, and the third valve port of the three-way valve is connected to the third pipe port of the three-way pipe; wherein the above-mentioned temperature control module 42 can be further configured as: if the ambient temperature is lower than the preset first temperature threshold and the coolant temperature of the electric drive assembly is lower than the preset second temperature threshold, the first valve port of the three-way valve is closed, and the second valve port and the third valve port of the three-way valve are opened.

[0046] In one embodiment, the thermal management system also includes an engine cooling circuit; wherein the above-mentioned vehicle thermal management device 40 can be further configured to: adjust the speed of the engine water pump in the engine cooling circuit according to the mixed air temperature to reduce the difference between the mixed air temperature and the mixed air target temperature.

[0047] In one embodiment, the thermal management system also includes an engine cooling circuit; wherein the temperature control module 42 can be further configured to control the operation of the executive components of the thermal management system according to the ambient temperature, the mixed air temperature, the coolant temperature of the electric drive assembly and the engine coolant temperature of the engine cooling circuit, so as to reduce the difference between the coolant temperature of the electric drive assembly and the coolant target temperature, and the difference between the mixed air temperature and the mixed air target temperature.

[0048] In one embodiment, the vehicle thermal management device 40 may be further configured to: if the engine coolant temperature is greater than a preset third temperature threshold, the EGR cooler is turned on to guide the engine exhaust gas into the turbocharger to obtain turbocharged gas.

[0049] The present application also provides a vehicle, comprising the vehicle thermal management system as described above.

[0050] The present application provides a vehicle, wherein the vehicle thermal management system includes an electric drive heat dissipation branch and an intercooler heat dissipation branch, wherein the electric drive heat dissipation branch is used to dissipate heat for the electric drive assembly, the intercooler heat dissipation branch is connected in parallel with the electric drive heat dissipation branch, and the intercooler heat dissipation branch is used to dissipate heat for the turbocharged gas, by collecting the ambient temperature outside the vehicle, the mixed air temperature after passing through the intercooler heat dissipation branch, and the coolant temperature of the electric drive assembly; according to the ambient temperature, the mixed air temperature after passing through the intercooler heat dissipation branch, and the coolant temperature of the electric drive assembly, the operation of the execution components of the thermal management system is controlled to reduce the difference between the coolant temperature of the electric drive assembly and the coolant target temperature, the mixed air temperature and The difference between the target temperatures of the mixed air; wherein the executive component is a component that changes the thermal management effect by changing its operating state; that is, the electric drive cooling branch and the intercooler cooling branch are merged into the same cooling circuit to achieve heat transfer between the two; and according to the ambient temperature, the mixed air temperature and the coolant temperature of the electric drive assembly, the executive components of the thermal management system are controlled to ensure the gas temperature before and after turbocharging, thereby improving combustion stability and increasing the service life of the turbocharging system, increasing the opening temperature of the EGR cooler, reducing low-temperature fuel consumption, and at the same time ensuring that the electric drive assembly operates in a more optimal temperature range to reduce the power loss of the electric drive assembly at low temperatures.

[0051] Below, reference Figure 5 The electronic device according to the embodiment of the present application is described. The electronic device may be any one or both of the first device and the second device, or a stand-alone device independent of them, and the stand-alone device may communicate with the first device and the second device to receive the collected input signal from them.

[0052] Figure 5 A block diagram of an electronic device according to an embodiment of the present application is illustrated.

[0053] like Figure 5 As shown, the electronic device 10 includes one or more processors 11 and a memory 12 .

[0054] The processor 11 may be a central processing unit (CPU) or other forms of processing units having data processing capabilities and / or instruction execution capabilities, and may control other components in the electronic device 10 to perform desired functions.

[0055] The memory 12 may include one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may include, for example, a random access memory (RAM) and / or a cache memory (cache), etc. The non-volatile memory may include, for example, a read-only memory (ROM), a hard disk, a flash memory, etc. One or more computer program instructions may be stored on the computer-readable storage medium, and the processor 11 may run the program instructions to implement the methods of the various embodiments of the present application described above and / or other desired functions. Various contents such as input signals, signal components, noise components, etc. may also be stored in the computer-readable storage medium.

[0056] In one example, the electronic device 10 may further include: an input device 13 and an output device 14 , and these components are interconnected via a bus system and / or other forms of connection mechanisms (not shown).

[0057] When the electronic device is a stand-alone device, the input device 13 may be a communication network connector, which is used to receive the collected input signals from the first device and the second device.

[0058] In addition, the input device 13 may also include, for example, a keyboard, a mouse, and the like.

[0059] The output device 14 can output various information to the outside, including the determined distance information, direction information, etc. The output device 14 can include, for example, a display, a speaker, a printer, a communication network and a remote output device connected thereto, and the like.

[0060] Of course, to simplify, Figure 5 Only some of the components related to the present application in the electronic device 10 are shown, and components such as a bus, an input / output interface, etc. are omitted. In addition, according to specific application situations, the electronic device 10 may also include any other appropriate components.

[0061] In addition to the above-mentioned methods and devices, an embodiment of the present application may also be a computer program product, which includes computer program instructions, which, when executed by a processor, enable the processor to execute the steps of the method according to various embodiments of the present application described in the above-mentioned "Exemplary Method" section of this specification.

[0062] The computer program product may be written in any combination of one or more programming languages ​​to write program codes for performing the operations of the embodiments of the present application, including object-oriented programming languages, such as Java, C++, etc., and conventional procedural programming languages, such as "C" language or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, as an independent software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0063] In addition, an embodiment of the present application may also be a computer-readable storage medium on which computer program instructions are stored. When the computer program instructions are executed by a processor, the processor executes the steps of the method according to various embodiments of the present application described in the above "Exemplary Method" section of this specification.

[0064] The computer readable storage medium can adopt any combination of one or more readable media. The readable medium can be a readable signal medium or a readable storage medium. The readable storage medium can include, for example, but is not limited to, a system, device or device of electricity, magnetism, light, electromagnetic, infrared, or semiconductor, or any combination of the above. More specific examples (non-exhaustive list) of readable storage media include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0065] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0066] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to", and can be used interchangeably with them.

[0067] It should also be noted that in the apparatus, device and method of the present application, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

[0068] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0069] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A vehicle thermal management method, characterized in that: Applied to a vehicle thermal management system, the vehicle thermal management system includes an electric drive heat dissipation branch and an intercooler heat dissipation branch, wherein the electric drive heat dissipation branch is used to dissipate heat from the electric drive assembly, the intercooler heat dissipation branch is connected in parallel with the electric drive heat dissipation branch, and the intercooler heat dissipation branch is used to dissipate heat from turbocharged gas; the vehicle thermal management method includes: Collecting the ambient temperature outside the vehicle, the mixed air temperature after passing through the intercooler heat dissipation branch, and the coolant temperature of the electric drive assembly; According to the ambient temperature, the mixed air temperature and the coolant temperature of the electric drive assembly, the operation of the executive component of the thermal management system is controlled to reduce the difference between the coolant temperature of the electric drive assembly and the coolant target temperature, and the difference between the mixed air temperature and the mixed air target temperature; wherein the executive component is a component that changes the thermal management effect by changing its operating state.

2. The vehicle thermal management method according to claim 1, characterized in that: The electric drive heat dissipation branch includes an electric drive radiator, the intercooler heat dissipation branch includes an engine intercooler, the executive component includes an electric drive water pump, a cooling fan and an active air intake grille, and the electric drive water pump is arranged in the electric drive heat dissipation branch; wherein, according to the ambient temperature, the mixed air temperature and the coolant temperature of the electric drive assembly, the operation of the executive component of the thermal management system is controlled to reduce the difference between the coolant temperature of the electric drive assembly and the coolant target temperature, and the difference between the mixed air temperature and the mixed air target temperature, including: According to the difference between the coolant temperature of the electric drive assembly and the coolant target temperature, and the difference between the mixed air temperature and the mixed air target temperature, the rotation speed of the electric drive water pump, the rotation speed of the cooling fan and the opening of the active air intake grille are adjusted to reduce the difference between the coolant temperature of the electric drive assembly and the coolant target temperature, and the difference between the mixed air temperature and the mixed air target temperature.

3. The vehicle thermal management method according to claim 1, characterized in that: The actuator comprises a three-way valve and a three-way pipe, wherein the first valve port and the second valve port of the three-way valve are respectively connected to the first connection end of the electric drive heat dissipation branch and the intercooler heat dissipation branch, the first pipe port and the second pipe port of the three-way pipe are respectively connected to the second connection end of the electric drive heat dissipation branch and the intercooler heat dissipation branch, and the third valve port of the three-way valve is connected to the third pipe port of the three-way pipe; wherein, according to the ambient temperature, the mixed air temperature and the coolant temperature of the electric drive assembly, the operation of the actuator of the thermal management system is controlled, including: If the ambient temperature is lower than a preset first temperature threshold and the coolant temperature of the electric drive assembly is lower than a preset second temperature threshold, the first valve port of the three-way valve is closed and the second valve port and the third valve port of the three-way valve are opened.

4. The vehicle thermal management method according to claim 1, characterized in that: The thermal management system further includes an engine cooling circuit; wherein the vehicle thermal management method further includes: According to the mixed air temperature, the rotation speed of the engine water pump in the engine heat dissipation circuit is adjusted to reduce the difference between the mixed air temperature and the mixed air target temperature.

5. The vehicle thermal management method according to claim 1, characterized in that: The vehicle thermal management method further includes: If the engine coolant temperature is greater than a preset third temperature threshold, the EGR cooler is turned on to guide the engine exhaust gas into the turbocharger to obtain the turbocharged gas.

6. A vehicle thermal management device, characterized in that: Set in a vehicle thermal management system, the vehicle thermal management system includes an electric drive heat dissipation branch and an intercooler heat dissipation branch, wherein the electric drive heat dissipation branch is used to dissipate heat for the electric drive assembly, the intercooler heat dissipation branch is connected in parallel with the electric drive heat dissipation branch, and the intercooler heat dissipation branch is used to dissipate heat for turbocharged gas; the vehicle thermal management device includes: A temperature collection module, used to collect the ambient temperature outside the vehicle, the mixed air temperature after passing through the intercooler heat dissipation branch, and the coolant temperature of the electric drive assembly; A temperature control module is used to control the operation of the executive component of the thermal management system according to the ambient temperature, the mixed air temperature and the coolant temperature of the electric drive assembly, so as to reduce the difference between the coolant temperature of the electric drive assembly and the coolant target temperature, and the difference between the mixed air temperature and the mixed air target temperature; wherein the executive component is a component that changes the thermal management effect by changing its operating state.

7. A vehicle thermal management system, characterized in that: include: Electric drive heat dissipation branch; wherein the electric drive heat dissipation branch is used to dissipate heat for the electric drive assembly; Intercooler heat dissipation branch; wherein the intercooler heat dissipation branch is connected in parallel with the electric drive heat dissipation branch, and the intercooler heat dissipation branch is used to dissipate heat for turbocharged gas; A vehicle thermal management device as claimed in claim 6.

8. A vehicle, characterized in that: It comprises a vehicle thermal management system as claimed in claim 7 above.

9. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, and the computer program is used to execute the method according to any one of claims 1 to 5.

10. An electronic device, characterized in that: include: processor; a memory for storing instructions executable by the processor; The processor is used to execute the method described in any one of claims 1 to 5.

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