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

Vehicle high-voltage component heat dissipation method and device and vehicle Download PDF

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CN114698321A
CN114698321A CN202011598684.1A CN202011598684A CN114698321A CN 114698321 A CN114698321 A CN 114698321A CN 202011598684 A CN202011598684 A CN 202011598684A CN 114698321 A CN114698321 A CN 114698321A
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heat dissipation
voltage component
vehicle
power
temperature
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漆择晗
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Shenzhen Zhenyu New Energy Power Technology Co Ltd
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Shenzhen Zhenyu New Energy Power Technology Co Ltd
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20845—Modifications to facilitate cooling, ventilating, or heating for automotive electronic casings
    • H05K7/20863—Forced ventilation, e.g. on heat dissipaters coupled to components
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20845—Modifications to facilitate cooling, ventilating, or heating for automotive electronic casings
    • H05K7/20872—Liquid coolant without phase change
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
    • H05K7/20909—Forced ventilation, e.g. on heat dissipaters coupled to components
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
    • H05K7/20927—Liquid coolant without phase change
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
    • H05K7/20945—Thermal management, e.g. inverter temperature control

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

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

Vehicle high-voltage component heat dissipation method and device and vehicle
Technical Field
The application relates to the technical field of vehicles, in particular to a method and a device for radiating a high-voltage component of a vehicle and the vehicle.
Background
With the development of new energy vehicles, the requirements on the heat management system of the new energy vehicle are higher and higher, and the electric vehicle is effectively subjected to heat management, so that the high-voltage safety of the whole vehicle is concerned, and the dynamic property and the economical efficiency of the whole vehicle can be effectively improved. The high-voltage component is directly related to the performances of the motor and the electric control system, and further influences the performance of the whole vehicle, so that the high-voltage component is particularly important for the heat management of the high-voltage loop.
However, the heat dissipation of the current high-voltage component is mainly performed through natural air cooling, which is poor in heat dissipation effect, easily causes heat accumulation, causes the rapid temperature rise of the high-voltage component, reduces the safety and reliability of the vehicle, and needs to be solved urgently.
Content of application
The application provides a method and a device for radiating a high-voltage part of a vehicle and the vehicle, which are used for solving the problems that the radiating effect of the high-voltage part of the existing new energy vehicle is poor, the high-voltage part is prone to being heated rapidly and the like.
An embodiment of a first aspect of the present application provides a method for dissipating heat of a high-voltage component of a vehicle, including the following steps: detecting whether the vehicle meets an active heat dissipation condition; when the active heat dissipation condition is detected to be met, calculating the heating power of the high-voltage component; 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 a heat dissipation component according to the heating power and the difference so as to dissipate heat of the high-voltage component.
Further, still include: detecting whether the working parameter is the highest operation parameter of the heat dissipation part; and if the working parameter is not the highest operation parameter, the temperature variation trend of the high-voltage component is an increasing trend, and the actual temperature reaches a preset power limit temperature, controlling the actual power of the high-voltage component in a preset power interval.
Further, the detecting whether the vehicle meets the active heat dissipation condition includes: detecting whether a current gear of the vehicle is in a forward gear or a reverse gear, whether heating power of the high-voltage component is higher than preset power, and whether an actual temperature of any one of the high-voltage components is higher than a preset temperature; and 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, judging that the active heat dissipation condition is met.
Further, the matching of the operating parameters of the heat dissipation component according to the heating power and the difference includes: respectively determining the heating power and the heating grade of the difference value; and obtaining the working parameters of the heat dissipation part based on a table look-up of the sum of the heating power and the heating grade of the difference value.
An embodiment of a second aspect of the present application provides a high-voltage component heat dissipation device for a vehicle, including: the first detection module is used for detecting whether the vehicle meets an active heat dissipation condition; the calculation module is used for calculating the heating power of the high-voltage component when the active heat dissipation condition is detected to be met; and the heat dissipation module is used for acquiring the actual temperature of the high-voltage component, calculating the difference between the actual temperature and the target temperature, and matching the working parameters of the heat dissipation component according to the heating power and the difference so as to dissipate the heat of the high-voltage component.
Further, still include: the second detection module is used for detecting whether the working parameters are the highest operation parameters of the heat dissipation component; and the power limiting module is used for controlling the actual power of the high-voltage component within a preset power interval 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.
Further, the first detection module is configured to detect whether a current gear of the vehicle is in a forward gear or a reverse gear, whether a heat generation power of the high-voltage component is higher than a preset power, and whether an actual temperature of any one of the high-voltage components is higher than a preset temperature, and determine that the active heat dissipation condition is satisfied when the current gear is in the forward gear or the reverse gear, or the heat generation power is higher than the preset power, or the actual temperature of any one of the components is higher than the preset temperature.
Further, the heat dissipation module includes: a determining unit, configured to determine the heating power and the heating level at which the difference is located respectively; and the table look-up unit is used for looking up a table to obtain the working parameters of the heat dissipation part based on the sum of the heating power and the heating grade of the difference value.
An embodiment of a third aspect of the present application provides a vehicle including the vehicle high-voltage component heat sink of the above embodiment.
When the vehicle satisfies the initiative heat dissipation condition, according to the best heat dissipation power of the heating power of high-pressure part and actual temperature control heat dissipation part to improve radiating effect through the vehicle initiative heat dissipation, and match the best heat dissipation power for high-pressure part and can make high-pressure part in time dispel the heat, thereby avoid the condition that the high-pressure part risees temperature rapidly because of the heat accumulation causes, improve the fail safe nature of vehicle, and can be better carry out the thermal management to high-pressure part. 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.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic flow chart of a method for dissipating heat of a high-voltage component of a vehicle according to an embodiment of the present application;
FIG. 2 is an exemplary diagram of a high-pressure circuit provided in accordance with an embodiment of the present application;
FIG. 3 is a schematic flow chart diagram of a method for dissipating heat from a high-voltage component of a vehicle according to an embodiment of the present application;
fig. 4 is an explanatory diagram of a high-voltage component heat sink of a vehicle according to an embodiment of the present application.
Detailed Description
Reference will now be made in detail to the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like 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 illustrative and intended to explain the present application and should not be construed as limiting the present application.
The following describes a high-voltage component heat dissipation method and device for a vehicle and the vehicle according to an embodiment of the present application with reference to the drawings. In the method, when the vehicle meets an active heat dissipation condition, the optimal heat dissipation power of the heat dissipation part is controlled according to the heating power and the actual temperature of the high-voltage part, so that the heat dissipation effect is improved through the active heat dissipation of the vehicle, the high-voltage part can be timely dissipated by matching the optimal heat dissipation power with the high-voltage part, the condition that the high-voltage part is rapidly heated due to heat accumulation is avoided, the safety and reliability of the vehicle are improved, and the high-voltage part can be better subjected to heat management. 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.
Specifically, fig. 1 is a schematic flow chart of a method for dissipating heat from a high-voltage component of a vehicle according to an embodiment of the present disclosure.
As shown in fig. 1, the method for dissipating heat from a high-voltage component of a vehicle includes the steps of:
in step S101, it is detected whether the vehicle satisfies an active heat radiation condition.
It should be noted that the main body of the vehicle for executing the high-voltage component heat dissipation method may be a vehicle. The high-voltage component heat dissipation device of the vehicle of the embodiment of the present application may be configured in any vehicle to perform the high-voltage component heat dissipation method of the vehicle of the embodiment of the present application.
It can be understood that, the embodiment of the present application can perform active heat dissipation on a vehicle to improve the heat dissipation effect, and therefore, it is required to first detect whether the vehicle meets the condition of 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 a forward gear or a reverse gear, whether the heating power of a high-voltage component is higher than a preset power, and whether the actual temperature of any one component in the high-voltage component is higher than a preset temperature; and if the current gear is in a forward gear or a 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, judging that the active heat dissipation condition is met.
The preset power can be calibrated according to the actual power of the high-voltage component, and the preset temperature can be calibrated according to the working temperature of the high-voltage component. For example, when the vehicle is in a forward gear or a reverse gear, or the heating power is higher than a calibrated value, or the actual temperature of the high-voltage component is higher than a target control temperature, it can be determined that the vehicle meets the active heat dissipation condition.
The high-voltage component may include a Motor Controller (MCU), a Motor (Motor), a charger (OBC), a direct current power converter (DCDC), and the like.
In step S102, upon detecting that the active heat dissipation condition is satisfied, the heat generation power of the high-voltage component is calculated.
The heating power that can be calculated according to the specific composition of the high-voltage component in the embodiments of the present application is not specifically limited herein. As an example, such as:
when the motor is in the driving mode, the thermal power of the electric driving system
Figure BDA0002870614800000031
When the motor is in a recovery mode, the heat power of the electric drive system
Figure BDA0002870614800000041
When the motor is in the locked-rotor working condition, the thermal power P of the electric drive systemMCU&Mot＝|UMCU×IMCU|；
DCDC thermal power PDCDC＝|UInput×IInput-UOutput×IOutput|；
OBC thermal power POBC＝|UInput×IInput-UOutput×IOutput|；
Heat generation power P of high voltage componentSum＝PMCU&Mot+PDCDC+POBC。
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 operating parameters of the heat dissipation component are matched according to the heating power and the difference, so as to dissipate heat of the high-voltage component.
Wherein, the heat dissipation part can include parts such as fan and water pump, and it can be understood that this application embodiment can be according to specific control fan of heating power and actual temperature and water pump rotational speed to carry out reasonable heat dissipation to high-pressure part, improve the radiating effect.
In this embodiment, matching the operating parameters of the heat dissipating component according to the heat generating power and the difference includes: respectively determining the heating power and the heating grade of the difference value; and obtaining the working parameters of the heat dissipation part by looking up a table based on the sum of the heating power and the heating grade at which the difference value is positioned.
The active heat dissipation mode can be divided into feedforward control and feedback control, the heating power can be divided into a plurality of levels according to the embodiment of the application, and the feedforward control heat management level is determined according to the actual heating power of the high-voltage loop; calculating the difference between the actual temperature of the component and the control target temperature, and looking up a table to obtain the heat management grade in the feedback control; and dividing the rotating speeds of the fan and the water pump into different grades to be combined, and selecting the corresponding rotating speeds of the fan and the water pump according to the sum of the thermal management grades in feedforward and feedback.
In some embodiments, further comprising: detecting whether the working parameters are the highest operation parameters of the heat dissipation part; and if the working parameters are not the highest operation parameters, the temperature variation trend of the high-voltage component is an increasing trend, and the actual temperature reaches the preset power limit temperature, controlling the actual power of the high-voltage component in a preset power interval.
It can be understood that, if the embodiment of the application is cooled down by the maximum cooling capacity, the temperature of the high-voltage component is still raised, and when the power limiting temperature is reached, the power limiting control is performed on the high-voltage component, so that the temperature accumulation caused by untimely heat dissipation can be avoided in time, the rapid temperature rise of the high-voltage component is avoided, and the safety and reliability of the vehicle are improved.
For example, as shown in fig. 2, the high voltage circuit includes a Motor Controller (MCU), a Motor (Motor), a charger (OBC), a direct current power converter (DCDC), a water Pump (Pump), a Radiator (Radiator), a Fan (Fan), and the like. The high-voltage components DCDC, OBC, MCU and Motor are connected with Pump and Radiator in series to form a complete high-voltage cooling liquid loop, and the Vehicle Control Unit (VCU) controls the water Pump and fan to work through an air conditioner controller (ACS) to dissipate heat, so that the temperature of the high-voltage components such as MCU, Motor, DCDC and OBC is controlled. The specific heat dissipation includes:
after the whole vehicle is electrified at high voltage, the vehicle firstly enters a passive heat dissipation mode, and the VCU calculates the heating power of the MCU, the Motor and the like; secondly, judging whether to enter an active heat dissipation mode according to the current temperature and the average heat generation power of the high-voltage component or whether to enter a driving gear; under the active heat dissipation mode, the VCU respectively calculates a feedforward control gear and a feedback control gear, and the feedforward control gear and the feedback control gear are summed to obtain a high-voltage loop heat dissipation gear; and looking up a table according to the heat dissipation gears to obtain the rotating speeds of the water pump and the fan, and controlling the water pump and the fan to work through the ACS so as to realize the temperature control of the whole thermal management system.
The method for dissipating heat from a high-voltage component of a vehicle according to an embodiment, as shown in fig. 3, includes the following steps:
1. after the whole vehicle is powered on, the vehicle is defaulted to enter a passive heat dissipation mode, and the fan and the water pump are not started at the moment.
2. Calculating the thermal power of high-voltage components in the high-voltage loop, and monitoring the temperature value of each high-voltage component;
when the motor is in the driving mode, the thermal power of the electric driving system
Figure BDA0002870614800000051
When the motor is in the recovery mode, the thermal power of the electric drive system
Figure BDA0002870614800000052
When the motor is in the locked-rotor working condition, the thermal power P of the electric drive systemMCU&Mot＝|UMCU×IMCU|；
DCDC thermal power PDCDC＝|UInput×IInput-UOutput×IOutput|；
OBC thermal power POBC＝|UInput×IInput-UOutput×IOutput|。
Heat generation of high voltage componentPower PSum＝PMCU&Mot+PDCDC+POBC。
3. When P is presentSumAnd when the actual temperature is higher than a target control temperature, the active heat dissipation mode is entered.
4. When the water pump and the fan are not in operation, the boundary value of the heating power (namely, the equilibrium temperature of the parts is enabled to reach the target temperature under the condition of minimum cooling capacity) is tested, and the value is marked as PMin
5. When the water pump and the fan are both switched on to the maximum, the limit value of the heating power (i.e. the equilibrium temperature of the high-pressure component is brought to the target temperature at the maximum cooling capacity) is tested and is denoted as PMax；
6. Dividing the heating power of a high-voltage loop into a plurality of grades:
P0＝PMin；
Figure BDA0002870614800000053
Figure BDA0002870614800000054
Figure BDA0002870614800000055
Figure BDA0002870614800000056
P5＝PMax。
7. the heat dissipation grade in the feedforward control is according to the actual total heat generation power P of the high-voltage loopSumAnd then:
when P is presentSum≤P0When the heat dissipation level in the feedforward control is 0;
when P is present0＜PSum≤P1When the heat dissipation level in the feedforward control is 1;
when P is1＜PSum≤P2When the heat dissipation level in the feedforward control is 2;
when P is present2＜PSum≤P3When the heat dissipation level in the feedforward control is 3;
when P is3＜PSum≤P4When the heat dissipation level in the feedforward control is 4;
when P is present4＜PSum≤P5When the heat dissipation level in the feedforward control is 5;
when P is presentSum＞P5When the heat dissipation level in the feedforward control is 6;
8. determining the target temperature T of the high-voltage component according to the parametersTarget(e.g., the target temperature of DCDC and OBC is 55 ℃, the target temperature of MCU is 65 ℃, and the target temperature of the driving motor is 80 ℃); according to the difference value delta T between the actual temperature of the high-voltage component and the target temperature of the high-voltage componentActual-TTargetLook-up tables are performed, such as table 1, to obtain the heat dissipation level in the feedback control.
TABLE 1
Temperature difference Δ T (. degree. C.) Heat dissipation level in feedback control
-24 -6
-20 -5
-16 -4
-12 -3
-8 -2
-4 -1
0 0
4 1
8 2
12 3
16 4
20 5
24 6
9. And adding the feedforward control mode and the feedback control mode to obtain the final heat dissipation grade of the high-voltage loop.
10. Dividing and combining the rotating speeds of the water pump and the fan according to different grades, and looking up a table 2 to determine the rotating speeds of the water pump and the fan according to the final heat dissipation grade of the high-pressure loop.
TABLE 2
Figure BDA0002870614800000071
11. And if the temperature of the high-pressure part is reduced by the maximum cooling capacity, the temperature of the high-pressure part is still increased, and the power limit temperature is reached, the power limit control is carried out on the high-pressure part.
According to the vehicle high-voltage component heat dissipation method provided by the embodiment of the 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 and the actual temperature of the high-voltage component, so that the heat dissipation effect is improved through the active heat dissipation of the vehicle, the high-voltage component can be timely dissipated by matching the optimal heat dissipation power with the high-voltage component, the situation that the high-voltage component is rapidly heated due to heat accumulation is avoided, the safety and reliability of the vehicle are improved, and the high-voltage component can be better subjected to heat management.
Next, a high-voltage component heat sink of a vehicle according to an embodiment of the present application will be described with reference to the drawings.
Fig. 4 is a block schematic diagram of a high-voltage component heat sink of a vehicle according to an embodiment of the present application.
As shown in fig. 4, the high-voltage component heat sink 10 of the vehicle includes: a first detection module 100, a calculation module 200 and a heat dissipation module 300.
The first detection module 100 is configured to detect whether a vehicle meets an active heat dissipation condition; the calculation module 200 is configured to calculate the heating power of the high-voltage component when detecting that the active heat dissipation condition is satisfied; the heat dissipation module 300 is configured to collect an actual temperature of the high-voltage component, calculate a difference between the actual temperature and a target temperature, and match a working parameter of the heat dissipation component according to the heating power and the difference, so as to dissipate heat of the high-voltage component.
Further, the apparatus 10 of the embodiment of the present application further includes: the second detection module and the power limiting module. The second detection module is used for detecting whether the working parameters are the highest operation parameters of the heat dissipation component; and the power limiting module is used for controlling the actual power of the high-voltage component within a preset power interval when the working parameter is not the highest operating parameter, the temperature variation trend of the high-voltage component is an increasing trend, and the actual temperature reaches a preset power limiting temperature.
Further, the first detection module 100 is configured to detect whether a current gear of the vehicle is in a forward gear or a reverse gear, whether a heating power of a high-voltage component is higher than a preset power, whether an actual temperature of any one of the high-voltage components is higher than a preset temperature, and determine that the active heat dissipation condition is satisfied when 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 one of the components is higher than the preset temperature.
Further, the heat dissipation module 300 includes: a determination unit and a table look-up unit. The determining unit is used for respectively determining the heating power and the heating grade of the difference value; and the table look-up unit is used for looking up a table based on the sum of the heating power and the heating grade of the difference value to obtain the working parameters of the heat dissipation part.
It should be noted that the foregoing explanation of the embodiment of the method for dissipating heat from a high-voltage component of a vehicle is also applicable to the heat dissipating device for a high-voltage component of a vehicle of this embodiment, and will not be repeated herein.
According to the high-voltage component heat abstractor of vehicle that this application embodiment provided, when the vehicle satisfies the initiative heat dissipation condition, according to the best heat dissipation power of the heating power of high-voltage component and actual temperature control heat dissipation part, with through the radiating effect of vehicle initiative improvement, and match the best heat dissipation power for high-voltage component and can make high-voltage component in time dispel the heat, thereby avoid the condition that the high-voltage component risees temperature rapidly because of heat accumulation causes, improve the fail safe nature of vehicle, and can be better manage the heat to high-voltage component.
The embodiment of the application also provides a vehicle, which comprises the high-voltage component heat dissipation device of the vehicle. According to the vehicle that this application embodiment provided, when the vehicle satisfies initiative heat dissipation condition, according to the best heat dissipation power of the heating power of high-pressure part and actual temperature control heat dissipation part to dispel the heat effect through the vehicle initiative, and match the best heat dissipation power for high-pressure part and can make high-pressure part in time dispel the heat, thereby avoid the condition that the high-pressure part risees temperature rapidly because of the heat accumulation causes, improve the fail safe nature of vehicle, and can be better manage heat to high-pressure part.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer 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 embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "N" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more N executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present application in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of implementing the embodiments of the present application.
The logic and/or steps represented in the flowcharts or otherwise described herein, such as an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or N wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are well known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims (9)

1. A method of dissipating heat from a high-voltage component of a vehicle, comprising the steps of:
detecting whether the vehicle meets an active heat dissipation condition;
when the active heat dissipation condition is detected to be met, calculating the heating power of the high-voltage component;
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 a heat dissipation component according to the heating power and the difference so as to dissipate heat of the high-voltage component.
2. The method of claim 1, further comprising:
detecting whether the working parameter is the highest operation parameter of the heat dissipation part;
and if the working parameter is not the highest operation parameter, the temperature variation trend of the high-voltage component is an increasing trend, and the actual temperature reaches a preset power limit temperature, controlling the actual power of the high-voltage component in a preset power interval.
3. The method of claim 1, wherein the detecting whether the vehicle satisfies an active heat dissipation condition comprises:
detecting whether a current gear of the vehicle is in a forward gear or a reverse gear, whether heating power of the high-voltage component is higher than preset power, and whether an actual temperature of any one of the high-voltage components is higher than a preset temperature;
and 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, judging that the active heat dissipation condition is met.
4. The method of claim 1, wherein said matching operational parameters of a heat dissipating component based on said heat generating power and said difference comprises:
respectively determining the heating power and the heating grade of the difference value;
and obtaining the working parameters of the heat dissipation part based on a table look-up of the sum of the heating power and the heating grade of the difference value.
5. A high-voltage component heat dissipating device for a vehicle, comprising:
the first detection module is used for detecting whether the vehicle meets an active heat dissipation condition;
the calculation module is used for calculating the heating power of the high-voltage component when the active heat dissipation condition is detected to be met;
and the heat dissipation module is used for acquiring the actual temperature of the high-voltage component, calculating the difference between the actual temperature and the target temperature, and matching the working parameters of the heat dissipation component according to the heating power and the difference so as to dissipate the heat of the high-voltage component.
6. The apparatus of claim 5, further comprising:
the second detection module is used for detecting whether the working parameters are the highest operation parameters of the heat dissipation component;
and the power limiting module is used for controlling the actual power of the high-voltage component within a preset power interval 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.
7. The device according to claim 5, wherein the first detection module is configured to detect whether a current gear of the vehicle is in a forward gear or a reverse gear, whether a heat generation power of the high-voltage component is higher than a preset power, whether an actual temperature of any one of the high-voltage components is higher than a preset temperature, and determine that the active heat dissipation condition is satisfied when the current gear is in the forward gear or the reverse gear, or the heat generation power is higher than the preset power, or the actual temperature of any one of the components is higher than the preset temperature.
8. The apparatus of claim 5, wherein the heat dissipation module comprises:
a determining unit, configured to determine the heating power and the heating level at which the difference is located respectively;
and the table look-up unit is used for obtaining the working parameters of the heat dissipation part by table look-up based on the sum of the heating power and the heating grade of the difference value.
9. A vehicle characterized by comprising the high-voltage part heat dissipating apparatus of the vehicle according to any one of claims 5 to 8.
CN202011598684.1A 2020-12-29 2020-12-29 Vehicle high-voltage component heat dissipation method and device and vehicle Pending CN114698321A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011598684.1A CN114698321A (en) 2020-12-29 2020-12-29 Vehicle high-voltage component heat dissipation method and device and vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011598684.1A CN114698321A (en) 2020-12-29 2020-12-29 Vehicle high-voltage component heat dissipation method and device and vehicle

Publications (1)

Publication Number Publication Date
CN114698321A true CN114698321A (en) 2022-07-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011598684.1A Pending CN114698321A (en) 2020-12-29 2020-12-29 Vehicle high-voltage component heat dissipation method and device and vehicle

Country Status (1)

Country Link
CN (1) CN114698321A (en)

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