CN114698321A - Vehicle high-voltage component heat dissipation method and device and vehicle - Google Patents

Abstract

The application discloses a vehicle and a method and a device for radiating a high-voltage component of the vehicle, wherein the method comprises the following steps: detecting whether the vehicle meets an active heat dissipation condition; when detecting that the active heat dissipation condition is met, calculating the heating power of the high-voltage component; the method comprises the steps of collecting the actual temperature of the high-voltage component, calculating the difference between the actual temperature and the target temperature, and matching working parameters of the heat dissipation component according to the heating power and the difference so as to dissipate heat of the high-voltage component. Therefore, the problems that the heat dissipation effect of the high-voltage component of the existing new energy vehicle is poor, the high-voltage component is prone to rapid temperature rise and the like are solved.

Description

Method, device and vehicle for heat dissipation of high-voltage components of vehicle

technical field

The present application relates to the technical field of vehicles, and in particular, to a heat dissipation method and device for a high-voltage component of a vehicle, and a vehicle.

Background technique

With the development of new energy vehicles, the requirements for their thermal management systems are getting higher and higher. Effective thermal management of electric vehicles is not only related to the high-voltage safety of the vehicle, but also can effectively improve the power and economy of the vehicle. . Among them, since the high-voltage components are directly related to the performance of the motor and the electronic control system, which in turn affects the performance of the entire vehicle, the thermal management of the high-voltage circuit is particularly important.

However, at present, the heat dissipation of high-voltage components is mainly carried out by natural air cooling, and the heat dissipation effect is poor, which easily leads to heat accumulation, resulting in the rapid heating of high-voltage components, which reduces the safety and reliability of the vehicle, which needs to be solved urgently.

Application content

The present application provides a heat dissipation method, device and vehicle for a high-voltage component of a vehicle, to solve the problems that the high-voltage component of the current new energy vehicle has poor heat-dissipating effect, and the high-voltage component is likely to heat up rapidly.

An embodiment of a first aspect of the present application provides a heat dissipation method for a high-voltage component of a vehicle, including the following steps: detecting whether the vehicle meets an active heat dissipation condition; when it is detected that the active heat dissipation condition is met, calculating the heating power of the high-voltage component; collecting the The actual temperature of the high-voltage component is calculated, and the difference between the actual temperature and the target temperature is calculated, and the working parameters of the heat-dissipating component are matched according to the heating power and the difference, so as to dissipate heat from the high-voltage component.

Further, it also includes: detecting whether the operating parameter is the highest operating parameter of the heat dissipation component; if the operating parameter is not the highest operating parameter, and the temperature change trend of the high-voltage component is an increasing trend, and the When the actual temperature reaches the preset power limit temperature, the actual power of the high-voltage component is controlled within the preset power range.

Further, the detecting whether the vehicle satisfies the active heat dissipation condition includes: detecting whether the current gear of the vehicle is in a forward gear or a reverse gear, whether the heating power of the high-voltage component is higher than a preset power, and whether the high-voltage component is in the high-voltage component. Whether the actual temperature of any component is higher than the preset temperature; if the current gear is in the forward gear or the reverse gear, or the heating power is higher than the preset power, or the If the actual temperature is higher than the preset temperature, it is determined that the active heat dissipation condition is satisfied.

Further, the matching of the working parameters of the heat dissipation component according to the heating power and the difference includes: respectively determining the heating level at which the heating power and the difference are located; The working parameters of the heat dissipating components are obtained by looking up the table with the sum of the heat generation levels at the place.

An embodiment of a second aspect of the present application provides a heat dissipation device for a high-voltage component of a vehicle, including: a first detection module for detecting whether the vehicle satisfies an active heat dissipation condition; a calculation module for detecting that the active heat dissipation condition is met, Calculate the heating power of the high-voltage component; the cooling module is used to collect the actual temperature of the high-voltage component, calculate the difference between the actual temperature and the target temperature, and match the work of the cooling component according to the heating power and the difference parameters to dissipate heat from the high-voltage components.

Further, it also includes: a second detection module for detecting whether the operating parameter is the highest operating parameter of the heat dissipation component; a power limiting module for detecting whether the operating parameter is not the highest operating parameter, and the The temperature change trend of the high-voltage component is an increasing trend, and when the actual temperature reaches a preset power limit temperature, the actual power of the high-voltage component is controlled within a preset power range.

Further, the first detection module is used to detect whether the current gear of the vehicle is in a forward gear or a reverse gear, whether the heating power of the high-voltage component is higher than a preset power, and the heating power of any component of the high-voltage component. Whether the actual temperature is higher than the preset temperature, and the current gear is in the forward gear or the reverse gear, or the heating power is higher than the preset power, or the actual temperature of any component is high At the preset temperature, it is determined that the active heat dissipation condition is satisfied.

Further, the heat dissipation module includes: a determination unit for determining the heating level at which the heating power and the difference are respectively; a table look-up unit for determining the heating level at which the heating power and the difference are located The working parameters of the heat dissipating components are obtained by looking up the table with the sum.

Embodiments of a third aspect of the present application provide a vehicle, including the heat dissipation device for a high-voltage component of the vehicle of the foregoing embodiments.

When the vehicle meets the active heat dissipation conditions, the optimal heat dissipation power of the heat dissipation components is controlled according to the heating power of the high voltage components and the actual temperature, so as to improve the heat dissipation effect through the active heat dissipation of the vehicle, and matching the best heat dissipation power for the high voltage components can make the high voltage components Dissipate heat in time, so as to avoid the rapid heating of high-voltage components caused by heat accumulation, improve the safety and reliability of vehicles, and better thermally manage high-voltage components. As a result, problems such as the poor heat dissipation effect of the high-voltage components of the current new energy vehicle and the rapid heating of the high-voltage components are easily caused.

Additional aspects and advantages of the present application will be set forth, in part, in the following description, and in part will be apparent from the following description, or learned by practice of the present application.

Description of drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily understood from the following description of embodiments taken in conjunction with the accompanying drawings, wherein:

1 is a schematic flowchart of a heat dissipation method for a high-voltage component of a vehicle provided according to an embodiment of the present application;

FIG. 2 is an exemplary diagram of a high-voltage circuit provided according to an embodiment of the present application;

3 is a schematic flowchart of a heat dissipation method for a high-voltage component of a vehicle provided according to an embodiment of the present application;

FIG. 4 is a diagram illustrating an example of a heat dissipation device for a high-voltage component of a vehicle according to an embodiment of the present application.

Detailed ways

The following describes in detail the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to be used to explain the present application, but should not be construed as a limitation to the present application.

The method, device and vehicle for heat dissipation of high-voltage components of a vehicle according to embodiments of the present application will be described below with reference to the accompanying drawings. In view of the problem that the high-voltage components of the current new energy vehicles have poor heat dissipation effect, which may easily lead to the rapid heating of the high-voltage components mentioned by the above-mentioned background technology center, the present application provides a heat dissipation method for the high-voltage components of the vehicle. When the vehicle meets the active heat dissipation conditions, the optimal heat dissipation power of the heat dissipation components is controlled according to the heating power of the high voltage components and the actual temperature, so as to improve the heat dissipation effect through the active heat dissipation of the vehicle, and matching the best heat dissipation power for the high voltage components can make the high voltage components timely. Heat dissipation, so as to avoid the rapid heating of high-voltage components caused by heat accumulation, improve the safety and reliability of the vehicle, and better thermally manage the high-voltage components. As a result, problems such as the poor heat dissipation effect of the high-voltage components of the current new energy vehicle and the rapid heating of the high-voltage components are easily caused.

Specifically, FIG. 1 is a schematic flowchart of a heat dissipation method for a high-voltage component of a vehicle according to an embodiment of the present application.

As shown in Figure 1, the heat dissipation method for high-voltage components of the vehicle includes the following steps:

In step S101, it is detected whether the vehicle satisfies the active heat dissipation condition.

It should be noted that the execution body of the method for dissipating heat from high-voltage components of a vehicle may be a vehicle. The heat dissipation method for high-voltage components of a vehicle according to the embodiment of the present application may be performed by the heat-dissipating apparatus for high-voltage components of a vehicle according to the embodiment of the present application. A method of dissipating heat from high-voltage components of a vehicle.

It can be understood that, in the embodiment of the present application, the vehicle can be actively dissipated to improve the effect of heat dissipation. Therefore, it is necessary to first detect whether the vehicle meets the conditions for active heat dissipation.

In this embodiment, detecting whether the vehicle satisfies the active heat dissipation condition includes: detecting whether the current gear of the vehicle is in forward gear or reverse gear, whether the heating power of the high-voltage components is higher than the preset power, and the actual power of any one of the high-voltage components. Whether the temperature is higher than the preset temperature; if the current gear is in forward gear or reverse gear, or the heating power is higher than the preset power, or the actual temperature of any component is higher than the preset temperature, it is determined that the active heat dissipation condition is met.

The preset power may be calibrated according to the actual power of the high-voltage component, and the preset temperature may be calibrated according to the working temperature of the high-voltage component. For example, when the vehicle is in forward gear or reverse gear, or the heating power is higher than the calibration value, or the actual temperature of the high-voltage components is higher than the target control temperature, it can be determined that the vehicle meets the active heat dissipation condition.

The high-voltage components may include a motor controller (MCU), a motor (Motor), a charger (OBC), a direct current converter (DCDC), and the like.

In step S102, when it is detected that the active heat dissipation condition is satisfied, the heating power of the high-voltage component is calculated.

The heating power that can be calculated according to the specific composition of the high-voltage components in the embodiments of the present application is not specifically limited here. As an example, something like:

When the motor is in drive mode, the thermal power of the electric drive system

When the motor is in recovery mode, the electric drive system thermal power

When the motor is in the locked rotor condition, the thermal power of the electric drive system P _MCU&Mot = |U _MCU ×I _MCU |;

DCDC thermal power P _DCDC = |U _Input ×I _Input -U _Output ×I _Output |;

OBC thermal power P _OBC ＝|U _Input ×I _Input -U _Output ×I _Output |;

The heating power of the high-voltage component P _Sum =P _MCU&Mot +P _DCDC +P _OBC .

In step S103, the actual temperature of the high-voltage component is collected, the difference between the actual temperature and the target temperature is calculated, and the working parameters of the heat-dissipating component are matched according to the heating power and the difference to dissipate the high-voltage component.

The cooling components may include components such as a fan and a water pump. It is understood that, in the embodiment of the present application, the rotational speed of the fan and the water pump can be specifically controlled according to the heating power and actual temperature, so as to reasonably radiate the high-voltage components and improve the cooling effect.

In this embodiment, matching the working parameters of the heat dissipation component according to the heating power and the difference includes: respectively determining the heating level at which the heating power and the difference are located; looking up a table based on the sum of the heating power and the heating level at the difference. Operating parameters of heat sink components.

Among them, the active cooling mode can be divided into feedforward control and feedback control. In the embodiment of the present application, the heating power can be divided into several levels, and the feedforward control thermal management level is determined according to the actual high-voltage loop heating power; and the actual temperature of the component is calculated. The difference between the temperature and the control target temperature, look up the table to obtain the thermal management level in the feedback control; divide the speed of the fan and the water pump into different levels for combination, and select the corresponding fan and Pump speed.

In some embodiments, the method further includes: detecting whether the working parameter is the highest operating parameter of the heat dissipation component; if the working parameter is not the highest operating parameter, and the temperature change trend of the high-voltage component is an increasing trend, and the actual temperature reaches a preset power limit temperature , the actual power of the high-voltage components is controlled within the preset power range.

It can be understood that, in the embodiment of the present application, if the temperature of the high-voltage components is lowered with the maximum cooling capacity, the temperature of the high-voltage components still rises, and when the power-limiting temperature is reached, the power-limiting control of the high-voltage components is performed, so that the untimely heat dissipation can be avoided in time. The temperature is accumulated, avoiding the rapid heating of high-voltage components, and improving the safety and reliability of the vehicle.

For example, as shown in Figure 2, the high-voltage circuit includes a motor controller (MCU), a motor (Motor), a charger (OBC), a DC power converter (DCDC), a water pump (Pump), and a water tank radiator (Radiator). , cooling fan (Fan) and so on. The high-voltage components DCDC, OBC, MCU, Motor and Pump and Radiator are connected in series to form a complete high-pressure coolant circuit. The vehicle controller (VCU) controls the water pump and fan to dissipate heat through the air conditioning controller (ACS), so as to realize the cooling of the MCU, Motor , DCDC, OBC and other high-voltage components temperature control. Specific heat dissipation includes:

After the vehicle is powered on at high voltage, it first enters the passive cooling mode, and the VCU calculates the heating power of the MCU, Motor, etc.; secondly, it determines whether to enter the active cooling mode according to the current temperature of the high-voltage components, the average heat generation power, or whether it enters the driving gear. In the active cooling mode, the VCU calculates the feedforward control gear and the feedback control gear respectively, and sums the two to obtain the high-voltage loop cooling gear; according to the cooling gear, the speed of the water pump and the fan is obtained by looking up the table, and then controlled by the ACS. The water pump and fan work to realize the temperature control of the entire thermal management system.

The heat dissipation method for high-voltage components of a vehicle will be described below through a specific embodiment, as shown in FIG. 3 , including the following steps:

1. After the vehicle is powered on, it enters passive cooling mode by default, and the fan and water pump are not started at this time.

2. Calculate the thermal power of the high-voltage components in the high-voltage circuit, and monitor the temperature value of each high-voltage component;

When the motor is in drive mode, the thermal power of the electric drive system

When the motor is in recovery mode, the electric drive system thermal power

When the motor is in the locked rotor condition, the thermal power of the electric drive system P _MCU&Mot = |U _MCU ×I _MCU |;

DCDC thermal power P _DCDC = |U _Input ×I _Input -U _Output ×I _Output |;

OBC thermal power P _OBC = |U _Input ×I _Input -U _Output ×I _Output |.

The heating power of the high-voltage component P _Sum =P _MCU&Mot +P _DCDC +P _OBC .

3. When P _Sum is greater than a certain calibration value or the driver is in the driving gear (D/R) or the actual temperature of any high-voltage component is higher than the target control temperature, the active cooling mode is entered.

4. When the water pump and the fan are not working, test the boundary value of the heating power (that is, the equilibrium temperature of the components can reach the target temperature under the condition of the minimum cooling capacity), and this value is recorded as P _Min

5. When the speed of the water pump and the fan are both turned on to the maximum, the boundary value of the heating power is tested (that is, the equilibrium temperature of the high-voltage component reaches the target temperature under the condition of the maximum cooling capacity), and this value is recorded as P _Max ;

6. Divide the heating power of the high-voltage circuit into several levels:

P ₀ =P _Min ;

P ₅ =P _Max .

7. The heat dissipation level in the feedforward control is determined according to the actual total heat generation power P _Sum of the high-voltage circuit:

When P _Sum ≤P ₀ , the heat dissipation level in feedforward control is 0;

When P ₀ <P _Sum ≤P ₁ , the heat dissipation level in the feedforward control is 1;

When P ₁ <P _Sum ≤P ₂ , the heat dissipation level in the feedforward control is 2;

When P ₂ <P _Sum ≤P ₃ , the heat dissipation level in the feedforward control is 3;

When P ₃ <P _Sum ≤P ₄ , the heat dissipation level in the feedforward control is 4;

When P ₄ <P _Sum ≤P ₅ , the heat dissipation level in the feedforward control is 5;

When P _Sum >P ₅ , the heat dissipation level in feedforward control is 6;

8. According to the parameters of the high-voltage components, determine the target temperature T _Target for its work (for example, the target temperature of the DCDC and OBC is 55℃, the target temperature of the MCU is 65℃, and the target temperature of the drive motor is 80℃); according to the actual temperature of the high-voltage components _{Look up} the table, as shown in Table 1, to obtain the heat dissipation level in the feedback control.

Table 1

Temperature difference ΔT(℃) Thermal class in feedback control -twenty four -6 -20 -5 -16 -4 -12 -3 -8 -2 -4 -1 0 0 4 1 8 2 12 3 16 4 20 5 twenty four 6

9. Add the feedforward control mode and the feedback control mode to obtain the final heat dissipation level of the high-voltage circuit.

10. Divide and combine the rotational speed of the water pump and fan according to different grades. According to the final heat dissipation grade of the high-voltage circuit, check Table 2 to confirm the rotational speed of the water pump and the fan.

Table 2

11. If the temperature of the high-voltage components still rises with the maximum cooling capacity, and reaches the power-limiting temperature, the power-limiting control of the high-voltage components will be performed.

According to the heat dissipation method for a high-voltage component of a vehicle proposed in the embodiment of the present application, when the vehicle meets the active heat dissipation condition, the optimal heat dissipation power of the heat dissipation component is controlled according to the heating power of the high-voltage component and the actual temperature, so as to improve the heat dissipation effect through the active heat dissipation of the vehicle, And matching the best heat dissipation power for the high-voltage components can make the high-voltage components dissipate in time, so as to avoid the rapid heating of the high-voltage components caused by heat accumulation, improve the safety and reliability of the vehicle, and better thermally manage the high-voltage components.

Next, the heat dissipation device for a high-voltage component of a vehicle according to an embodiment of the present application will be described with reference to the accompanying drawings.

FIG. 4 is a schematic block diagram of a heat dissipation device for a high-voltage component of a vehicle according to an embodiment of the present application.

As shown in FIG. 4 , the high-voltage component heat dissipation device 10 of the vehicle includes: a first detection module 100 , a calculation module 200 and a heat dissipation module 300 .

Wherein, the first detection module 100 is used to detect whether the vehicle satisfies the active heat dissipation condition; the calculation module 200 is used to calculate the heating power of the high voltage component when it is detected that the active heat dissipation condition is met; the heat dissipation module 300 is used to collect the actual temperature of the high voltage component, Calculate the difference between the actual temperature and the target temperature, and match the working parameters of the heat dissipation components according to the heating power and the difference to dissipate heat from the high-voltage components.

Further, the apparatus 10 in the embodiment of the present application further includes: a second detection module and a power limiting module. Among them, the second detection module is used to detect whether the working parameter is the highest operating parameter of the heat dissipation component; the power limiting module is used to detect whether the working parameter is not the highest operating parameter, and the temperature change trend of the high-voltage component is an increasing trend, and the actual temperature reaches the predetermined value. When the set power limit temperature is set, the actual power of the high-voltage components is controlled within the preset power range.

Further, the first detection module 100 is used to detect whether the current gear of the vehicle is in forward gear or reverse gear, whether the heating power of the high-voltage component is higher than the preset power, and whether the actual temperature of any component in the high-voltage component is higher than the preset power. When the current gear is in forward gear or reverse gear, or the heating power is higher than the preset power, or the actual temperature of any component is higher than the preset temperature, it is determined that the active heat dissipation condition is satisfied.

Further, the heat dissipation module 300 includes: a determination unit and a table lookup unit. Wherein, the determining unit is used to respectively determine the heating level of the heating power and the difference; the table look-up unit is used to look up the table to obtain the working parameters of the heat dissipation component based on the sum of the heating power and the heating level of the difference.

It should be noted that the foregoing explanations on the embodiment of the heat dissipation method for high-voltage components of a vehicle are also applicable to the heat-dissipating device for high-voltage components of a vehicle in this embodiment, and are not repeated here.

According to the heat dissipation device for a high-voltage component of a vehicle proposed in the embodiment of the present application, when the vehicle meets the active heat dissipation condition, the optimal heat dissipation power of the heat dissipation component is controlled according to the heating power of the high-voltage component and the actual temperature, so as to improve the heat dissipation effect through the active heat dissipation of the vehicle, And matching the best heat dissipation power for the high-voltage components can make the high-voltage components dissipate in time, so as to avoid the rapid heating of the high-voltage components caused by heat accumulation, improve the safety and reliability of the vehicle, and better thermally manage the high-voltage components.

Embodiments of the present application further provide a vehicle, including the heat dissipation device for a high-voltage component of the vehicle according to the above embodiments. According to the vehicle proposed in the embodiment of the present application, when the vehicle meets the active heat dissipation condition, the optimal heat dissipation power of the heat dissipation component is controlled according to the heating power of the high voltage component and the actual temperature, so as to improve the heat dissipation effect through the active heat dissipation of the vehicle, and match the high voltage component The best heat dissipation power can make the high-voltage components dissipate heat in time, thereby avoiding the rapid heating of the high-voltage components caused by heat accumulation, improving the safety and reliability of the vehicle, and better thermal management of the high-voltage components.

In the description of this specification, description with reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc., mean specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or N of the embodiments or examples. Furthermore, those skilled in the art may combine and combine the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples, without conflicting each other.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In the description of the present application, "N" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

Any process or method description in the flowchart or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or N more executable instructions for implementing custom logical functions or steps of the process , and the scope of the preferred embodiments of the present application includes alternative implementations in which the functions may be performed out of the order shown or discussed, including performing the functions substantially concurrently or in the reverse order depending upon the functions involved, which should It is understood by those skilled in the art to which the embodiments of the present application belong.

The logic and/or steps represented in flowcharts or otherwise described herein, for example, may be considered an ordered listing of executable instructions for implementing the logical functions, may be embodied in any computer-readable medium, For use with, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other system that can fetch instructions from and execute instructions from an instruction execution system, apparatus, or apparatus) or equipment. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport the program for use by or in connection with an instruction execution system, apparatus, or apparatus. More specific examples (non-exhaustive list) of computer readable media include the following: electrical connections (electronic devices) with one or N wires, portable computer disk cartridges (magnetic devices), random access memory (RAM), Read Only Memory (ROM), Erasable Editable Read Only Memory (EPROM or Flash Memory), Fiber Optic Devices, and Portable Compact Disc Read Only Memory (CDROM). In addition, the computer readable medium may even be paper or other suitable medium on which the program may be printed, as the paper or other medium may be optically scanned, for example, followed by editing, interpretation, or other suitable medium as necessary process to obtain the program electronically and then store it in computer memory.

It should be understood that various parts of this application may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the N steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware as in another embodiment, it can be implemented by any one of the following techniques known in the art, or a combination thereof: discrete with logic gates for implementing logic functions on data signals Logic circuits, application specific integrated circuits with suitable combinational logic gates, Programmable Gate Arrays (PGA), Field Programmable Gate Arrays (FPGA), etc.

Those skilled in the art can understand that all or part of the steps carried by the methods of the above embodiments can be completed by instructing the relevant hardware through a program, and the program can be stored in a computer-readable storage medium, and the program can be stored in a computer-readable storage medium. When executed, one or a combination of the steps of the method embodiment is included.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing module, or each unit may exist physically alone, or two or more units may be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules. If the integrated modules are implemented in the form of software functional modules and sold or used as independent products, they may also be stored in a computer-readable storage medium.

The above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, and the like. Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limitations to the present application. Embodiments are subject to variations, modifications, substitutions and variations.

Claims (9)

1. A high-voltage component heat dissipation method for a vehicle, characterized in that, comprising the following steps: Detect whether the vehicle meets the active cooling conditions; When it is detected that the active heat dissipation condition is satisfied, calculating the heating power of the high-voltage component; The actual temperature of the high-voltage component is collected, the difference between the actual temperature and the target temperature is calculated, and the working parameters of the heat-dissipating component are matched according to the heating power and the difference to dissipate heat from the high-voltage component. 2. The method of claim 1, further comprising: Detecting whether the operating parameter is the highest operating parameter of the heat dissipation component; If the operating parameter is not the highest operating parameter, and the temperature change trend of the high-voltage component is an increasing trend, and the actual temperature reaches the preset power limit temperature, the actual power of the high-voltage component is controlled at the preset power limit. within the power range. 3. The method according to claim 1, wherein the detecting whether the vehicle satisfies the active heat dissipation condition comprises: Detecting whether the current gear of the vehicle is in a forward gear or a reverse gear, whether the heating power of the high-voltage component is higher than a preset power, and whether the actual temperature of any one of the high-voltage components is higher than a preset temperature; If the current gear is in the forward gear or the reverse gear, or the heating power is higher than the preset power, or the actual temperature of any component is higher than the preset temperature, it is determined that the the active cooling conditions. 4. The method according to claim 1, wherein the matching of the working parameters of the heat dissipation component according to the heating power and the difference comprises: respectively determining the heating level at which the heating power and the difference are located; Based on the sum of the heating power and the heating level at which the difference is located, a table is looked up to obtain the working parameters of the heat dissipation component. 5. A heat dissipation device for high-voltage components of a vehicle, characterized in that, comprising: a first detection module for detecting whether the vehicle meets the active cooling condition; a calculation module, configured to calculate the heating power of the high-voltage component when it is detected that the active heat dissipation condition is met; A heat dissipation module is used to collect the actual temperature of the high-voltage component, calculate the difference between the actual temperature and the target temperature, and match the working parameters of the heat-dissipating component according to the heating power and the difference, so as to control the high-voltage component. components to dissipate heat. 6. The apparatus of claim 5, further comprising: a second detection module, configured to detect whether the operating parameter is the highest operating parameter of the heat dissipation component; The power limiting module is used for setting the high-voltage component when the working parameter is not the highest operating parameter, the temperature change trend of the high-voltage component is an increasing trend, and the actual temperature reaches a preset power-limiting temperature. The actual power is controlled within the preset power range. 7 . The device according to claim 5 , wherein the first detection module is used to detect whether the current gear of the vehicle is in a forward gear or a reverse gear, and whether the heating power of the high-voltage component is higher than a predetermined value. 8 . Set the power, whether the actual temperature of any of the high-voltage components is higher than the preset temperature, and the current gear is in the forward gear or the reverse gear, or the heating power is higher than the preset temperature When the power or the actual temperature of any of the components is higher than the preset temperature, it is determined that the active heat dissipation condition is satisfied. 8. The device according to claim 5, wherein the heat dissipation module comprises: a determining unit, configured to respectively determine the heating level at which the heating power and the difference are located; A table look-up unit, configured to look up a table to obtain working parameters of the heat dissipation component based on the sum of the heating power and the heating level at which the difference is located. 9 . A vehicle, characterized in that, comprising the heat dissipation device for high-voltage components of the vehicle according to any one of claims 5 to 8 . 10 .

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