Heat dissipation adjusting method and device of vehicle and terminal equipment

Abstract

The invention is suitable for the technical field of vehicle control, and provides a vehicle heat dissipation adjusting method and device and terminal device.The method comprises the steps that when hybrid control is conducted on a hybrid vehicle, the temperature value of a first device is detected so as to determine whether the temperature of the first device is too high or not; the first device comprises a low-temperature radiator and a power conversion device connected with the battery, and the low-temperature radiator radiates heat for devices needing to work at low temperature; if the temperature of the first device is too high, in order to reduce the temperature of the first device, the performance of the engine and / or the air conditioner needs to be reduced. After the performance of the engine and / or the air conditioner is reduced, heat produced by the engine and the air conditioner can be reduced, heat emitted by the radiator for radiating the engine and the air conditioner can also be reduced, and then the temperature of the low-temperature radiator located in the same radiating area with the radiator of the engine and the air conditioner can also be reduced; the effect of reducing the temperature of the first device is achieved, and the devices in the low-temperature loop can work normally.

Description

Technical Field

[0001] The present application belongs to the field of vehicle control technology, and in particular, relates to a vehicle heat dissipation adjustment method, device and terminal equipment. Background Art

[0002] For hybrid vehicles, if the vehicle is in a high temperature idling environment, the water outlet temperature of the low temperature radiator will often be high. When the temperature of the low temperature radiator is high, the heat dissipation performance of the low temperature radiator will decrease, resulting in the low temperature radiator being unable to quickly dissipate heat for the components in the low temperature circuit, for example, the power conversion equipment, motor and motor controller connected to the battery cannot be quickly dissipated, and the temperature of the components in the low temperature circuit will increase, affecting the use of the components in the low temperature circuit. Summary of the invention

[0003] The embodiments of the present application provide a method, apparatus and terminal device for heat dissipation regulation of a vehicle, which can solve the problem that the use of components in a low-temperature circuit is affected by the degradation of the heat dissipation performance of a low-temperature radiator.

[0004] In a first aspect, an embodiment of the present application provides a method for adjusting heat dissipation of a vehicle, comprising:

[0005] Acquiring a temperature value of a first component in a vehicle, wherein the first component includes a low-temperature radiator and a power conversion device connected to a battery, and the low-temperature radiator is used to dissipate heat for a second component in the vehicle that needs to work at a low temperature;

[0006] Determining whether the temperature value of the first device meets a preset requirement, wherein the preset requirement includes that the temperature value of at least one of the low-temperature heat sink and the power conversion device is higher than a preset temperature;

[0007] When the temperature value of the first component reaches the preset requirement, the performance of the third component in the vehicle is reduced to reduce the temperature of the first component, wherein the radiator of the third component and the low-temperature radiator are in the same heat dissipation area, the third component includes the engine and / or air conditioner in the vehicle, the performance of the engine includes the maximum speed and / or maximum torque of the engine, and the performance of the air conditioner is the maximum power of the air conditioner.

[0008] In a possible implementation manner of the first aspect, the third device includes the engine, and the performance of the engine includes a maximum speed of the engine;

[0009] When the temperature value of the first component reaches the preset requirement, reducing the performance of the third component in the vehicle, including:

[0010] When the temperature value of the first device reaches the preset requirement, obtaining a first current temperature of the engine and a first ambient temperature of the environment in which the vehicle is located;

[0011] determining a first constrained speed of the engine based on the first current temperature and the first ambient temperature;

[0012] Acquiring a second current temperature of the power conversion device;

[0013] determining a second constrained speed of the engine according to the second current temperature and the first ambient temperature;

[0014] A target constrained speed of the engine is determined according to the first constrained speed and the second constrained speed, and the maximum speed of the engine is reduced to the target constrained speed.

[0015] In a possible implementation manner of the first aspect, determining the first constrained speed of the engine based on the first current temperature and the first ambient temperature includes:

[0016] determining a first speed of the engine corresponding to the first current temperature;

[0017] Determining a first correction coefficient corresponding to the first ambient temperature;

[0018] The first rotational speed is corrected using the first correction coefficient to obtain a first constrained rotational speed of the engine.

[0019] In a possible implementation manner of the first aspect, determining the target constrained speed of the engine according to the first constrained speed and the second constrained speed includes:

[0020] comparing the first constrained speed and the second constrained speed;

[0021] A minimum value of the first constrained speed and the second constrained speed is determined as a target constrained speed of the engine.

[0022] In a possible implementation manner of the first aspect, the third device includes the engine, and the performance of the engine includes the maximum torque of the engine;

[0023] When the temperature value of the first component reaches the preset requirement, reducing the performance of the third component in the vehicle, including:

[0024] When the temperature value of the first device reaches the preset requirement, obtaining a third current temperature of the engine and a second ambient temperature of the environment in which the vehicle is located;

[0025] determining a first constrained torque of the engine based on the third current temperature and the second ambient temperature;

[0026] Acquiring a fourth current temperature of the power conversion device;

[0027] determining a second constrained torque of the engine according to the fourth current temperature and the second ambient temperature;

[0028] A target constraint torque of the engine is determined according to the first constraint torque and the second constraint torque, and the maximum torque of the engine is reduced to the target constraint torque.

[0029] In a possible implementation manner of the first aspect, the third device includes the air conditioner;

[0030] When the temperature value of the first component reaches the preset requirement, reducing the performance of the third component in the vehicle, including:

[0031] When the temperature value of the first device reaches the preset requirement, obtaining a fifth current temperature of the power conversion device and a third ambient temperature of the environment in which the vehicle is located;

[0032] Based on the fifth current temperature and the third ambient temperature, a target constraint power of the air conditioner is determined, and the maximum power of the air conditioner is reduced to the target constraint power.

[0033] In a possible implementation manner of the first aspect, determining the target constraint power of the air conditioner based on the fifth current temperature and the third ambient temperature includes:

[0034] determining a candidate power of the air conditioner corresponding to the fifth current temperature;

[0035] Determining a power correction coefficient corresponding to the third ambient temperature;

[0036] The candidate power is corrected based on the power correction coefficient to obtain the target constraint power of the air conditioner.

[0037] In a second aspect, an embodiment of the present application provides a heat dissipation regulating device for a vehicle, comprising:

[0038] a temperature acquisition module, used to acquire a temperature value of a first device in the vehicle, wherein the first device includes a low-temperature radiator and a power conversion device connected to a battery, and the low-temperature radiator is used to dissipate heat for a second device in the vehicle that needs to work at a low temperature;

[0039] A judgment module, used to determine whether the temperature value of the first device meets a preset requirement, wherein the preset requirement includes that the temperature value of at least one of the low-temperature heat sink and the power conversion device is higher than a preset temperature;

[0040] A temperature regulation module is used to reduce the performance of a third component in the vehicle to reduce the temperature of the first component when the temperature value of the first component reaches the preset requirement, wherein the radiator of the third component and the low-temperature radiator are in the same heat dissipation area, the third component includes an engine and / or an air conditioner in the vehicle, the performance of the engine includes the maximum speed and / or maximum torque of the engine, and the performance of the air conditioner is the maximum power of the air conditioner.

[0041] In a third aspect, an embodiment of the present application provides a terminal device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the heat dissipation adjustment method for the vehicle described in any one of the first aspects above is implemented.

[0042] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the heat dissipation adjustment method for a vehicle described in any one of the first aspects above is implemented.

[0043] In a fifth aspect, an embodiment of the present application provides a computer program product. When the computer program product is run on a terminal device, the terminal device executes the vehicle heat dissipation adjustment method described in any one of the above-mentioned first aspects.

[0044] Compared with the prior art, the beneficial effect of the first aspect embodiment of the present application is as follows: first detect the temperature value of the first device to determine whether the temperature of the first device is too high, the first device includes a low-temperature radiator and a power conversion device connected to a battery, and the low-temperature radiator dissipates heat for devices that need to work at low temperatures. If the temperature of the first device is too high, in order to reduce the temperature of the first device, it is necessary to reduce the performance of the engine and / or air conditioner. After reducing the performance of the engine and / or air conditioner, the present application can reduce the heat generation of the engine and air conditioner. When the heat generation of the engine and air conditioner is reduced, the heat emitted by the radiator for dissipating heat for the engine and air conditioner will also be reduced, and then the temperature of the low-temperature radiator in the same heat dissipation area as the radiator of the engine and air conditioner will also be reduced, achieving the effect of reducing the temperature of the first device, so that the low-temperature radiator can normally dissipate heat for the devices in the low-temperature circuit, so that the devices in the low-temperature circuit can work normally.

[0045] It can be understood that the beneficial effects of the second to fifth aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0047] Figure 1 is a schematic diagram of an arrangement structure of a low-temperature radiator, a condenser, and a high-temperature radiator provided in one embodiment of the present application;

[0048] Figure 2 It is a flow chart of a heat dissipation adjustment method for a vehicle provided in one embodiment of the present application;

[0049] Figure 3 It is a flow chart of a method for constraining the maximum speed of an engine provided by an embodiment of the present application;

[0050] Figure 4 It is a flowchart of a method for determining a restricted speed of an engine provided by an embodiment of the present application;

[0051] Figure 5 It is a flow chart of a method for constraining the maximum torque of an engine provided by an embodiment of the present application;

[0052] Figure 6 It is a flowchart of a method for constraining the maximum power of an air conditioner provided in an embodiment of the present application;

[0053] Figure 7 It is a structural schematic diagram of a heat dissipation regulating device for a vehicle provided in one embodiment of the present application;

[0054] Figure 8 It is a structural diagram of a terminal device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0055] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0056] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0057] As used in the specification and appended claims of this application, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "uponce it is determined" or "in response to determining" or "uponce [described condition or event] is detected" or "in response to detecting [described condition or event]", depending on the context.

[0058] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0059] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. appearing in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways.

[0060] There are electric motors and engines in hybrid vehicles. Due to the co-existence of electric motors and engines, the power source of hybrid vehicles can be batteries and / or fuel.

[0061] The motor in a hybrid vehicle needs to work at low temperatures, while the engine needs to work at high temperatures. Therefore, a hybrid vehicle includes a low-temperature circuit and a high-temperature circuit. The low-temperature circuit includes the motor, motor controller, on-board charger, and power conversion device (Direct Current-Direct Current, DCDC). The power conversion device is connected to the battery.

[0062] When a hybrid vehicle is in a high-temperature idling condition, if the generator is generating electricity at high power and the air conditioner in the vehicle is also cooling at high power, the water temperature at the outlet of the low-temperature radiator will be relatively high. When the temperature of the low-temperature radiator is high, the low-temperature radiator cannot dissipate heat for the components in the low-temperature circuit well, affecting the normal use of the components in the low-temperature circuit. For example, when the temperature of the low-temperature radiator is high, the low-temperature radiator cannot dissipate heat for the power conversion device well, the temperature of the power conversion device rises, and the power conversion device cannot supply power to the battery well, resulting in battery feeding, and the low-voltage electrical components connected to the battery cannot work normally. Low-voltage electrical components may include speakers, audio, screens, and water pumps.

[0063] Why does the temperature of the low-temperature radiator appear too high? This is because the hybrid vehicle not only has a low-temperature radiator, but also an air conditioner condenser and a high-temperature radiator for the generator. The low-temperature radiator, condenser and high-temperature radiator are arranged in parallel, and the low-temperature radiator, condenser and high-temperature radiator share a fan. Figure 1 As shown, the arrangement structure of the low-temperature radiator 1, the condenser 2 and the high-temperature radiator 3 is shown in the figure, and the fan is on the right side of the high-temperature radiator 3. When the temperature of the condenser and the high-temperature radiator is very high (often occurs in static conditions, when there is no headwind in the hybrid vehicle, the air conditioner and the engine are working at high power, and the heat dissipation of the fan is limited), the fan cannot discharge the heat emitted by the condenser and the high-temperature radiator in time, resulting in the temperature of the low-temperature radiator in the same heat dissipation area as the condenser and the high-temperature radiator to rise, the performance of the low-temperature radiator to decrease, and the low-temperature radiator cannot dissipate heat for the devices in the low-temperature circuit well.

[0064] Based on the above problems, the present application proposes a method for regulating heat dissipation of a vehicle. When the temperature of the low-temperature radiator and / or the power conversion device is very high, the temperature of the condenser and the high-temperature radiator is constrained, thereby reducing the temperature of the low-temperature radiator and the power conversion device. Since the function of the condenser is to exchange heat for the air conditioner, and the function of the high-temperature radiator is to cool the engine, constraining the temperature of the condenser and the high-temperature radiator is actually constraining the heat dissipation of the engine and the air conditioner. The heat dissipation of the engine depends on the power generation of the engine, and the heat dissipation of the air conditioner depends on the power of the air conditioner. Therefore, constraining the power generation of the engine can reduce the heat dissipation of the engine, and constraining the power of the air conditioner can reduce the heat dissipation of the air conditioner. The control of the power generation is achieved by controlling the speed and torque of the engine. Therefore, in order to reduce the power generation of the generator, the speed and / or torque of the engine can be constrained.

[0065] The following combination Figure 2 The heat dissipation adjustment method of the vehicle in the embodiment of the present application is described in detail.

[0066] Figure 2 A schematic flow chart of the heat dissipation adjustment method for a vehicle provided by the present application is shown, referring to Figure 2 , the method is described in detail as follows:

[0067] S101, obtaining a temperature value of a first component in a vehicle, wherein the first component includes a low-temperature radiator and a power conversion device connected to a battery, and the low-temperature radiator is used to dissipate heat for a second component in the vehicle that needs to work at a low temperature.

[0068] In this embodiment, the power conversion device is a device operating at low temperature.

[0069] In this embodiment, the second device may also include a motor, a motor controller, an on-board charger, etc.

[0070] S102, determining whether the temperature value of the first component meets a preset requirement, wherein the preset requirement includes that the temperature value of at least one of the low-temperature heat sink and the power conversion device is higher than a preset temperature.

[0071] In this embodiment, the preset temperature is pre-set, and the preset temperature can be set as needed.

[0072] The preset requirement may be that the temperature value of the low temperature radiator is higher than the first temperature, and the preset temperature includes the first temperature. The preset requirement may also be that the temperature value of the power conversion device is higher than the second temperature, and the preset temperature includes the second temperature. The preset requirement may also be that the temperature value of the low temperature radiator is higher than the first temperature, and the temperature value of the power conversion device is higher than the second temperature.

[0073] S103, when the temperature value of the first component reaches the preset requirement, reducing the performance of a third component in the vehicle to reduce the temperature of the first component, wherein the radiator of the third component and the low-temperature radiator are in the same heat dissipation area, the third component includes an engine and / or an air conditioner in the vehicle, the performance of the engine includes the maximum speed and / or maximum torque of the engine, and the performance of the air conditioner is the maximum power of the air conditioner.

[0074] In this embodiment, the radiator of the engine is a high-temperature radiator, and the radiator of the air conditioner is a condenser.

[0075] Reducing the performance of the third device in the vehicle includes: first, reducing the maximum speed of the engine. Second, reducing the maximum torque of the engine. Third, reducing the maximum speed and maximum torque of the engine. Fourth, reducing the maximum power of the air conditioner. Fifth, reducing the maximum speed of the engine and the maximum power of the air conditioner. Sixth, reducing the maximum torque of the engine and the maximum power of the air conditioner. Seventh, reducing the maximum speed and maximum torque of the engine, and reducing the maximum power of the air conditioner.

[0076] In the present application, the temperature value of the first device is first detected to determine whether the temperature of the first device is too high. The first device includes a low-temperature radiator and a power conversion device connected to a battery. The low-temperature radiator dissipates heat for devices that need to work at low temperatures. If the temperature of the first device is too high, in order to reduce the temperature of the first device, the performance of the engine and / or air conditioner needs to be reduced. After reducing the performance of the engine and / or air conditioner, the present application can reduce the heat generation of the engine and air conditioner. When the heat generation of the engine and air conditioner is reduced, the heat emitted by the radiator for dissipating heat for the engine and air conditioner will also be reduced, and then the temperature of the low-temperature radiator in the same heat dissipation area as the radiator of the engine and air conditioner will also be reduced, achieving the effect of reducing the temperature of the first device, so that the low-temperature radiator can normally dissipate heat for the devices in the low-temperature circuit, so that the devices in the low-temperature circuit can work normally.

[0077] In a possible implementation, the process of reducing the maximum speed of the engine includes:

[0078] S201, when the temperature value of the first component reaches the preset requirement, obtaining a first current temperature of the engine and a first ambient temperature of the environment in which the vehicle is located.

[0079] In this embodiment, obtaining the first current temperature of the engine is obtaining the water temperature of the engine, and the water temperature of the engine is the first current temperature.

[0080] The first ambient temperature is measured by a thermometer.

[0081] S202: Determine a first constrained speed of the engine based on the first current temperature and the first ambient temperature.

[0082] In this embodiment, a first constrained speed corresponding to the first current temperature and the first ambient temperature is searched, and constrained speeds corresponding to different engine temperatures and ambient temperatures are pre-stored.

[0083] Alternatively, a first maximum rotation speed corresponding to the first current temperature is searched, a second maximum rotation speed corresponding to the first ambient temperature is searched, and a minimum value between the first maximum rotation speed and the second maximum rotation speed is determined as the first constrained rotation speed.

[0084] For example, if the first maximum rotation speed corresponding to the first current temperature is 1400 rpm and the second maximum rotation speed corresponding to the first ambient temperature is 900 rpm, 900 rpm is used as the first constrained rotation speed.

[0085] S203: Acquire a second current temperature of the power conversion device.

[0086] In this embodiment, in order to ensure the normal operation of the power conversion device, when constraining the performance of the engine, it is necessary to consider the temperature of the power conversion device and constrain the performance of the engine according to the temperature of the power conversion device.

[0087] In this embodiment, the second current temperature of the power conversion device is obtained by detecting the water temperature of the water inlet of the power conversion device.

[0088] S204: Determine a second constrained speed of the engine according to the second current temperature and the first ambient temperature.

[0089] In this embodiment, the second constrained rotation speed corresponding to the second current temperature and the first ambient temperature is searched.

[0090] Alternatively, the third maximum rotation speed corresponding to the second current temperature is found, the second maximum rotation speed corresponding to the first ambient temperature is found, and the minimum value of the third maximum rotation speed and the second maximum rotation speed is determined as the second constrained rotation speed.

[0091] S205: Determine a target constraint speed of the engine according to the first constraint speed and the second constraint speed, and reduce the maximum speed of the engine to the target constraint speed.

[0092] In this embodiment, the first constrained speed and the second constrained speed are compared; and the minimum value of the first constrained speed and the second constrained speed is determined as the target constrained speed of the engine.

[0093] Alternatively, the average of the first constraint rotational speed and the second constraint rotational speed is calculated, and the average of the first constraint rotational speed and the second constraint rotational speed is used as the target constraint rotational speed.

[0094] In an embodiment of the present application, the constrained speed of the engine is determined by the temperature of the engine, the ambient temperature and the temperature of the power conversion device, which takes into account both the needs of the engine and the needs of the power conversion device. The obtained constrained speed of the engine can reduce the heat dissipation of the engine while also ensuring that the temperature of the power conversion device will not be too high.

[0095] In a possible implementation, the implementation process of step S202 may include:

[0096] S2021, determining a first speed of the engine corresponding to the first current temperature.

[0097] In this embodiment, a corresponding variation curve of the engine temperature and the maximum speed is preset, and after determining the first current temperature of the engine, the first speed corresponding to the first current temperature is searched from the corresponding variation curve of the engine temperature and the maximum speed.

[0098] In this embodiment, a corresponding table of engine temperature and maximum speed is preset, and after determining the first current temperature of the engine, the first speed corresponding to the first current temperature is searched from the corresponding table of engine temperature and maximum speed.

[0099] As an example, the corresponding table of the engine temperature and the maximum speed is shown in Table 1 below, which shows the corresponding relationship between the engine temperature and the maximum speed.

[0100] Table 1 Correspondence between engine temperature and maximum speed

[0101] Engine temperature ℃ 110 114 116 118 Maximum speed 1950 1500 1200 1200

[0102] It can be seen from Table 1 that as the engine temperature increases, the maximum speed of the engine decreases. If the engine temperature is between 110-114, the engine temperature can be attributed to 114, and so on, which will not be repeated here.

[0103] S2022: Determine a first correction coefficient corresponding to the first ambient temperature.

[0104] In this embodiment, a relationship curve diagram between the ambient temperature and the correction coefficient is pre-stored, and the first correction coefficient corresponding to the first ambient temperature is searched through the relationship curve diagram.

[0105] In this embodiment, a corresponding table of ambient temperature and correction coefficient is preset, and after the first ambient temperature is determined, the first correction coefficient corresponding to the first ambient temperature is searched from the table.

[0106] As an example, the corresponding table of ambient temperature and correction coefficient is shown in Table 2 below, which shows the corresponding relationship between ambient temperature and correction coefficient.

[0107] Table 2 Correspondence between ambient temperature and correction factor

[0108] Ambient temperature ℃ 30 35 40 45 Correction factor 1.5 1 1 0.8

[0109] It can be seen from Table 2 that as the ambient temperature increases, the correction coefficient decreases, so that the maximum speed of the engine is smaller. If the ambient temperature is between 30-35°C, the ambient temperature can be attributed to 35°C, and so on, which will not be repeated here.

[0110] S2023: Correct the first speed based on the first correction coefficient to obtain a first constrained speed of the engine.

[0111] In this embodiment, the first rotational speed is multiplied by the first correction coefficient to obtain the first constrained rotational speed.

[0112] In an embodiment of the present application, a correction coefficient is determined by the ambient temperature, and the first speed determined by the engine temperature is corrected using the correction coefficient, so that the obtained first constrained speed better meets environmental requirements, thereby improving the accuracy of constraining the engine speed.

[0113] In a possible implementation, the implementation process of step S204 may include:

[0114] S2041, determining a second speed of the engine corresponding to the second current temperature.

[0115] In this embodiment, a corresponding change curve between the temperature and the maximum speed of the power conversion device is preset. After the second current temperature of the power conversion device is determined, the second speed corresponding to the second current temperature is searched from the corresponding change curve between the temperature and the maximum speed of the power conversion device.

[0116] In this embodiment, a corresponding table of the temperature and maximum rotation speed of the power conversion device is pre-set. After the second current temperature of the power conversion device is determined, the second rotation speed corresponding to the second current temperature is searched from the corresponding table of the temperature and maximum rotation speed of the power conversion device.

[0117] As an example, a corresponding table of the temperature and the maximum rotation speed of the power conversion device is shown in Table 3 below. The table shows the corresponding relationship between the temperature and the maximum rotation speed of the power conversion device.

[0118] Table 3 Correspondence between the temperature and maximum speed of the power conversion equipment

[0119]

[0120] It can be seen from Table 3 that as the temperature of the power conversion device increases, the maximum speed of the engine decreases. If the temperature of the power conversion device is between 65-67, the temperature of the engine can be attributed to 67, and so on, which will not be repeated here.

[0121] S2042: Determine a first correction coefficient corresponding to the first ambient temperature.

[0122] S2043: Correct the second speed based on the first correction coefficient to obtain a second constrained speed of the engine.

[0123] In this embodiment, the second rotational speed is multiplied by the first correction coefficient to obtain the second constrained rotational speed.

[0124] In an embodiment of the present application, a correction coefficient is determined by the ambient temperature, and the second speed determined by the temperature of the power conversion device is corrected using the correction coefficient, so that the obtained second constrained speed meets both the requirements of the power conversion device and the environmental requirements, thereby improving the accuracy of constraining the engine speed.

[0125] In a possible implementation, the process of reducing the maximum torque of the engine includes:

[0126] S301, when the temperature value of the first component reaches the preset requirement, obtaining a third current temperature of the engine and a second ambient temperature of the environment in which the vehicle is located.

[0127] S302: Determine a first constraint torque of the engine based on the third current temperature and the second ambient temperature.

[0128] In this embodiment, the description of step S302 refers to the description of step S202 , which will not be repeated here.

[0129] S303: Acquire a fourth current temperature of the power conversion device.

[0130] In this embodiment, the description of step S303 refers to the description of step S203, which will not be repeated here.

[0131] S304: Determine a second constraint torque of the engine according to the fourth current temperature and the second ambient temperature.

[0132] In this embodiment, the description of step S304 refers to the description of step S204 , which will not be repeated here.

[0133] S305 , determining a target constraint torque of the engine according to the first constraint torque and the second constraint torque, and reducing the maximum torque of the engine to the target constraint torque.

[0134] In this embodiment, the description of step S305 refers to the description of step S205, which will not be repeated here.

[0135] In an embodiment of the present application, the constraint torque of the engine is determined by the temperature of the engine, the ambient temperature and the temperature of the power conversion device, which takes into account both the needs of the engine and the needs of the power conversion device, so that the obtained constraint torque of the engine can ensure that the heat dissipation of the engine is reduced, while also ensuring that the temperature of the power conversion device will not be too high.

[0136] In a possible implementation, the implementation process of step S302 may include:

[0137] S3021, determining the first torque of the engine corresponding to the third current temperature.

[0138] In this embodiment, a corresponding change curve between the engine temperature and the maximum torque is preset, and after the third current temperature of the engine is determined, the first torque corresponding to the third current temperature is found from the corresponding change curve between the engine temperature and the maximum torque. The higher the engine temperature, the smaller the corresponding maximum torque.

[0139] In this embodiment, a correspondence table between the engine temperature and the maximum torque is preset, and after the third current temperature of the engine is determined, the first torque corresponding to the third current temperature is searched from the correspondence table between the engine temperature and the maximum torque.

[0140] As an example, the corresponding table of the engine temperature and the maximum torque is shown in Table 4 below, which shows the corresponding relationship between the engine temperature and the maximum torque.

[0141] Table 4 Correspondence between engine temperature and maximum torque

[0142] Engine temperature ℃ 110 114 116 118 Maximum Torque 115 70 70 40

[0143] It can be seen from Table 4 that as the engine temperature increases, the maximum torque of the engine decreases.

[0144] S3022: Determine a second correction coefficient corresponding to the second ambient temperature.

[0145] In this embodiment, the description of step S3022 refers to the above step S2022 and will not be repeated here.

[0146] S3023: Correct the first torque based on the second correction coefficient to obtain a first constraint torque of the engine.

[0147] In this embodiment, the first torque is multiplied by the second correction coefficient to obtain the first restraining torque.

[0148] In the embodiment of the present application, a correction coefficient is determined by the ambient temperature, and the first torque determined by the engine temperature is corrected using the correction coefficient, so that the obtained first constrained torque better meets the environmental requirements, thereby improving the accuracy of constraining the engine torque.

[0149] In a possible implementation, the implementation process of step S304 may include:

[0150] S3041, determining the second torque of the engine corresponding to the fourth current temperature.

[0151] In this embodiment, the corresponding change curve of the temperature and the maximum torque of the power conversion device is pre-set. After the fourth current temperature of the power conversion device is determined, the second torque corresponding to the fourth current temperature is found from the corresponding change curve of the temperature and the maximum torque of the power conversion device.

[0152] In this embodiment, a corresponding table of the temperature and maximum torque of the power conversion device is preset. After the fourth current temperature of the power conversion device is determined, the second torque corresponding to the fourth current temperature is searched from the corresponding table of the temperature and maximum torque of the power conversion device.

[0153] As an example, a corresponding table of the temperature and the maximum torque of the power conversion device is shown in Table 5 below. The table shows the corresponding relationship between the temperature and the maximum torque of the power conversion device.

[0154] Table 5 Correspondence between the temperature and maximum torque of power conversion equipment

[0155]

[0156] It can be seen from Table 5 that as the temperature of the power conversion equipment increases, the maximum torque of the engine decreases.

[0157] S3042: Determine a second correction coefficient corresponding to the second ambient temperature.

[0158] S3043: Correct the second torque based on the second correction coefficient to obtain a second constraint torque of the engine.

[0159] In this embodiment, the second torque is multiplied by the second correction coefficient to obtain the second constraint torque.

[0160] In an embodiment of the present application, a correction coefficient is determined by the ambient temperature, and the second torque determined by the temperature of the power conversion device is corrected using the correction coefficient, so that the obtained second constraint torque meets both the requirements of the power conversion device and the environmental requirements, thereby improving the accuracy of constraining the engine torque.

[0161] In a possible implementation, the process of reducing the maximum power of the air conditioner includes:

[0162] S401, when the temperature value of the first component reaches the preset requirement, obtaining a fifth current temperature of the power conversion device and a third ambient temperature of the environment in which the vehicle is located.

[0163] S402: Determine a target constraint power of the air conditioner based on the fifth current temperature and the third ambient temperature, and reduce the maximum power of the air conditioner to the target constraint power.

[0164] In this embodiment, the target constrained power corresponding to the fifth current temperature and the third ambient temperature is searched, and the constrained powers corresponding to different power conversion device temperatures and ambient temperatures are pre-stored.

[0165] Alternatively, the first maximum power corresponding to the fifth current temperature is searched, the second maximum power corresponding to the third ambient temperature is searched, and the minimum value of the first maximum power and the second maximum power is determined as the target constraint power.

[0166] In the embodiment of the present application, the constrained power of the air conditioner only takes into account the temperature of the power conversion device, without considering the heat dissipation of the condenser of the air conditioner, thereby ensuring the normal operation of the power conversion device and the refrigeration performance of the air conditioner as much as possible without affecting the user's use of the air conditioner.

[0167] In a possible implementation, the implementation process of step S402 may include:

[0168] S4021, determining the candidate power of the air conditioner corresponding to the fifth current temperature.

[0169] In this embodiment, the corresponding change curve of the temperature and maximum power of the power conversion device is preset. After the fifth current temperature of the power conversion device is determined, the candidate power corresponding to the fifth current temperature is searched from the corresponding change curve of the temperature and maximum power of the power conversion device.

[0170] In this embodiment, a corresponding table of the temperature and maximum power of the power conversion device is preset, and after the fifth current temperature of the engine is determined, the candidate power corresponding to the fifth current temperature is searched from the corresponding table of the temperature and maximum power of the power conversion device.

[0171] As an example, a corresponding table of the temperature and the maximum power of the power conversion device is shown in Table 6 below. The table shows the corresponding relationship between the temperature and the maximum power of the power conversion device.

[0172] Table 6 Correspondence between the temperature and maximum power of power conversion equipment

[0173]

[0174] It can be seen from Table 6 that as the temperature of the power conversion device increases, the maximum power of the air conditioner decreases. If the temperature of the power conversion device is between 65-67, the temperature of the power conversion device can be attributed to 67, and so on, which will not be repeated here.

[0175] S4022: Determine a power correction coefficient corresponding to the third ambient temperature.

[0176] S4023: Correct the candidate power based on the power correction coefficient to obtain a target constraint power of the air conditioner.

[0177] In this embodiment, the candidate power is multiplied by the power correction coefficient to obtain the target constraint power.

[0178] In an embodiment of the present application, a power correction coefficient is determined by the ambient temperature, and the candidate power determined by the temperature of the power conversion device is corrected using the power correction coefficient, so that the obtained target constraint power is more in line with environmental requirements, thereby improving the accuracy of constraining the air conditioning power.

[0179] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0180] Corresponding to the heat dissipation adjustment method for a vehicle described in the above embodiment, Figure 7 A structural block diagram of a heat dissipation regulating device for a vehicle provided in an embodiment of the present application is shown. For ease of explanation, only the parts related to the embodiment of the present application are shown.

[0181] Reference Figure 7 The device 500 may include: a temperature acquisition module 510, a judgment module 520 and a temperature adjustment module 530.

[0182] The temperature acquisition module 510 is used to acquire the temperature value of a first device in the vehicle, wherein the first device includes a low-temperature radiator and a power conversion device connected to a battery, and the low-temperature radiator is used to dissipate heat for a second device in the vehicle that needs to work at a low temperature;

[0183] A judgment module 520, configured to determine whether the temperature value of the first device meets a preset requirement, wherein the preset requirement includes that the temperature value of at least one of the low-temperature heat sink and the power conversion device is higher than a preset temperature;

[0184] The temperature regulation module 530 is used to reduce the performance of a third component in the vehicle to reduce the temperature of the first component when the temperature value of the first component reaches the preset requirement, wherein the radiator of the third component and the low-temperature radiator are in the same heat dissipation area, the third component includes the engine and / or air conditioner in the vehicle, the performance of the engine includes the maximum speed and / or maximum torque of the engine, and the performance of the air conditioner is the maximum power of the air conditioner.

[0185] In a possible implementation, the third device includes the engine, and the performance of the engine includes the maximum speed of the engine; the temperature adjustment module 530 can be specifically used for:

[0186] When the temperature value of the first device reaches the preset requirement, obtaining a first current temperature of the engine and a first ambient temperature of the environment in which the vehicle is located;

[0187] determining a first constrained speed of the engine based on the first current temperature and the first ambient temperature;

[0188] Acquiring a second current temperature of the power conversion device;

[0189] determining a second constrained speed of the engine according to the second current temperature and the first ambient temperature;

[0190] A target constrained speed of the engine is determined according to the first constrained speed and the second constrained speed, and the maximum speed of the engine is reduced to the target constrained speed.

[0191] In a possible implementation, the temperature adjustment module 530 may be specifically used for:

[0192] determining a first speed of the engine corresponding to the first current temperature;

[0193] Determining a first correction coefficient corresponding to the first ambient temperature;

[0194] The first rotational speed is corrected using the first correction coefficient to obtain a first constrained rotational speed of the engine.

[0195] In a possible implementation, the temperature adjustment module 530 may be specifically used for:

[0196] comparing the first constrained speed and the second constrained speed;

[0197] A minimum value of the first constrained speed and the second constrained speed is determined as a target constrained speed of the engine.

[0198] In a possible implementation, the third device includes the engine, and the performance of the engine includes the maximum torque of the engine; the temperature adjustment module 530 can be specifically used for:

[0199] When the temperature value of the first device reaches the preset requirement, obtaining a third current temperature of the engine and a second ambient temperature of the environment in which the vehicle is located;

[0200] determining a first constrained torque of the engine based on the third current temperature and the second ambient temperature;

[0201] Acquiring a fourth current temperature of the power conversion device;

[0202] determining a second constrained torque of the engine according to the fourth current temperature and the second ambient temperature;

[0203] A target constraint torque of the engine is determined according to the first constraint torque and the second constraint torque, and the maximum torque of the engine is reduced to the target constraint torque.

[0204] In a possible implementation, the third device includes the air conditioner; the temperature adjustment module 530 may be specifically used for:

[0205] When the temperature value of the first device reaches the preset requirement, obtaining a fifth current temperature of the power conversion device and a third ambient temperature of the environment in which the vehicle is located;

[0206] Based on the fifth current temperature and the third ambient temperature, a target constraint power of the air conditioner is determined, and the maximum power of the air conditioner is reduced to the target constraint power.

[0207] In a possible implementation, the temperature adjustment module 530 may be specifically used for:

[0208] determining a candidate power of the air conditioner corresponding to the fifth current temperature;

[0209] Determining a power correction coefficient corresponding to the third ambient temperature;

[0210] The candidate power is corrected based on the power correction coefficient to obtain the target constraint power of the air conditioner.

[0211] It should be noted that the information interaction, execution process, etc. between the above-mentioned devices / units are based on the same concept as the method embodiment of the present application. Their specific functions and technical effects can be found in the method embodiment part and will not be repeated here.

[0212] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0213] The present application also provides a terminal device, see Figure 8 The terminal device 600 may include: at least one processor 610, a memory 620, and a computer program stored in the memory 620 and executable on the at least one processor 610. When the processor 610 executes the computer program, the steps in any of the above-mentioned method embodiments are implemented, for example Figure 2 Steps S101 to S103 in the illustrated embodiment. Alternatively, when the processor 610 executes the computer program, the functions of each module / unit in the above-mentioned device embodiments are implemented, for example Figure 7 The functions of the temperature acquisition module 510 to the temperature adjustment module 530 are shown.

[0214] Exemplarily, the computer program may be divided into one or more modules / units, one or more modules / units are stored in the memory 620, and executed by the processor 610 to complete the present application. The one or more modules / units may be a series of computer program segments capable of completing specific functions, and the program segments are used to describe the execution process of the computer program in the terminal device 600.

[0215] Those skilled in the art will understand that Figure 8 It is only an example of a terminal device and does not constitute a limitation on the terminal device. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components, such as input and output devices, network access devices, buses, etc.

[0216] The processor 610 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0217] The memory 620 may be an internal storage unit of the terminal device, or an external storage device of the terminal device, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. The memory 620 is used to store the computer program and other programs and data required by the terminal device. The memory 620 may also be used to temporarily store data that has been output or is to be output.

[0218] The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, the bus in the drawings of the present application is not limited to only one bus or one type of bus.

[0219] The vehicle heat dissipation adjustment method provided in the embodiment of the present application can be applied to terminal devices such as computers, tablet computers, laptops, netbooks, personal digital assistants (PDAs), etc. The embodiment of the present application does not impose any restrictions on the specific type of terminal devices.

[0220] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0221] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0222] In the embodiments provided in the present application, it should be understood that the disclosed terminal equipment, devices and methods can be implemented in other ways. For example, the terminal equipment embodiments described above are only schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0223] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0224] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0225] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and when the computer program is executed by one or more processors, the steps of each of the above-mentioned method embodiments can be implemented.

[0226] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and when the computer program is executed by one or more processors, the steps of each of the above-mentioned method embodiments can be implemented.

[0227] Similarly, as a computer program product, when the computer program product runs on a terminal device, the terminal device can implement the steps in the above-mentioned method embodiments when executing the computer program product.

[0228] The computer program includes computer program code, which may be in source code form, object code form, executable file or some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium, etc. It should be noted that the content contained in the computer readable medium may be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer readable media do not include electric carrier signals and telecommunication signals.

[0229] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A method for heat dissipation adjustment of a vehicle, characterized in that: include: Acquiring a temperature value of a first component in a vehicle, wherein the first component includes a low-temperature radiator and a power conversion device connected to a battery, and the low-temperature radiator is used to dissipate heat for a second component in the vehicle that needs to work at a low temperature; Determining whether the temperature value of the first device meets a preset requirement, wherein the preset requirement includes that the temperature value of at least one of the low-temperature heat sink and the power conversion device is higher than a preset temperature; When the temperature value of the first component reaches the preset requirement, the performance of the third component in the vehicle is reduced to reduce the temperature of the first component, wherein the radiator of the third component and the low-temperature radiator are in the same heat dissipation area, the third component includes the engine and / or air conditioner in the vehicle, the performance of the engine includes the maximum speed and / or maximum torque of the engine, and the performance of the air conditioner is the maximum power of the air conditioner.

2. The heat dissipation adjustment method for a vehicle according to claim 1, characterized in that: The third device includes the engine, and the performance of the engine includes the maximum speed of the engine; When the temperature value of the first component reaches the preset requirement, reducing the performance of the third component in the vehicle includes: When the temperature value of the first device reaches the preset requirement, obtaining a first current temperature of the engine and a first ambient temperature of the environment in which the vehicle is located; determining a first constrained speed of the engine based on the first current temperature and the first ambient temperature; Acquiring a second current temperature of the power conversion device; determining a second constrained speed of the engine according to the second current temperature and the first ambient temperature; A target constrained speed of the engine is determined according to the first constrained speed and the second constrained speed, and the maximum speed of the engine is reduced to the target constrained speed.

3. The heat dissipation adjustment method for a vehicle according to claim 2, characterized in that: The determining a first constrained speed of the engine based on the first current temperature and the first ambient temperature includes: determining a first speed of the engine corresponding to the first current temperature; Determining a first correction coefficient corresponding to the first ambient temperature; The first rotational speed is corrected using the first correction coefficient to obtain a first constrained rotational speed of the engine.

4. The heat dissipation adjustment method for a vehicle according to claim 2 or 3, characterized in that: The step of determining a target constrained speed of the engine according to the first constrained speed and the second constrained speed includes: comparing the first constrained speed and the second constrained speed; A minimum value of the first constrained speed and the second constrained speed is determined as a target constrained speed of the engine.

5. The heat dissipation adjustment method for a vehicle according to claim 1 or 2, characterized in that: The third device includes the engine, and the performance of the engine includes the maximum torque of the engine; When the temperature value of the first component reaches the preset requirement, reducing the performance of the third component in the vehicle, including: When the temperature value of the first device reaches the preset requirement, obtaining a third current temperature of the engine and a second ambient temperature of the environment in which the vehicle is located; determining a first constrained torque of the engine based on the third current temperature and the second ambient temperature; Acquiring a fourth current temperature of the power conversion device; determining a second constrained torque of the engine according to the fourth current temperature and the second ambient temperature; A target constraint torque of the engine is determined according to the first constraint torque and the second constraint torque, and the maximum torque of the engine is reduced to the target constraint torque.

6. The heat dissipation adjustment method for a vehicle according to claim 5, characterized in that: The third device includes the air conditioner; When the temperature value of the first component reaches the preset requirement, reducing the performance of the third component in the vehicle, including: When the temperature value of the first device reaches the preset requirement, obtaining a fifth current temperature of the power conversion device and a third ambient temperature of the environment in which the vehicle is located; Based on the fifth current temperature and the third ambient temperature, a target constraint power of the air conditioner is determined, and the maximum power of the air conditioner is reduced to the target constraint power.

7. The heat dissipation adjustment method for a vehicle according to claim 6, characterized in that: The determining the target constraint power of the air conditioner based on the fifth current temperature and the third ambient temperature includes: determining a candidate power of the air conditioner corresponding to the fifth current temperature; Determining a power correction coefficient corresponding to the third ambient temperature; The candidate power is corrected based on the power correction coefficient to obtain the target constraint power of the air conditioner.

8. A heat dissipation regulating device for a vehicle, characterized in that: include: a temperature acquisition module, used to acquire a temperature value of a first device in the vehicle, wherein the first device includes a low-temperature radiator and a power conversion device connected to a battery, and the low-temperature radiator is used to dissipate heat for a second device in the vehicle that needs to work at a low temperature; A judgment module, used to determine whether the temperature value of the first device meets a preset requirement, wherein the preset requirement includes that the temperature value of at least one of the low-temperature heat sink and the power conversion device is higher than a preset temperature; A temperature regulation module is used to reduce the performance of a third component in the vehicle to reduce the temperature of the first component when the temperature value of the first component reaches the preset requirement, wherein the radiator of the third component and the low-temperature radiator are in the same heat dissipation area, the third component includes an engine and / or an air conditioner in the vehicle, the performance of the engine includes the maximum speed and / or maximum torque of the engine, and the performance of the air conditioner is the maximum power of the air conditioner.

9. A terminal device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the heat dissipation adjustment method for a vehicle as described in any one of claims 1 to 7 is implemented.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the heat dissipation adjustment method for a vehicle as claimed in any one of claims 1 to 7 is implemented.

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