CN115023095A - Motor controller cooling method, storage medium, vehicle, and cooling device - Google Patents
Motor controller cooling method, storage medium, vehicle, and cooling device Download PDFInfo
- Publication number
- CN115023095A CN115023095A CN202110236437.5A CN202110236437A CN115023095A CN 115023095 A CN115023095 A CN 115023095A CN 202110236437 A CN202110236437 A CN 202110236437A CN 115023095 A CN115023095 A CN 115023095A
- Authority
- CN
- China
- Prior art keywords
- motor controller
- temperature
- water pump
- cooling
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K11/00—Arrangement in connection with cooling of propulsion units
- B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K11/00—Arrangement in connection with cooling of propulsion units
- B60K11/06—Arrangement in connection with cooling of propulsion units with air cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0072—Installation or systems with two or more pumps, wherein the flow path through the stages can be changed, e.g. series-parallel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a motor controller cooling method, a storage medium, a vehicle and a cooling device, wherein the motor controller cooling method comprises the following steps: obtaining the phase current of a motor and obtaining the temperature of a motor controller; when the phase current of the motor is determined to be larger than or equal to a preset current threshold, performing virtual heat accumulation calculation by adopting a water tank method to obtain a heat calculation value, and judging whether the heat calculation value is larger than or equal to a first heat threshold or not; judging whether the temperature of the motor controller is greater than or equal to a first preset temperature or not; and controlling the cooling water pump to be started and operated so as to cool the motor controller. The motor controller cooling method reduces the starting times of the water pump, prolongs the service life of the water pump, reduces the starting time of the water pump, reduces the energy consumption of the electric vehicle, and improves the driving mileage of the electric vehicle.
Description
Technical Field
The present invention relates to the field of vehicles, and in particular, to a motor controller cooling method, a storage medium, a vehicle, and a cooling apparatus.
Background
In the related technology, the water pump is kept normally open during the running process of the vehicle, so that the motor controller can be prevented from being cooled untimely, but the electric energy of the battery system is consumed when the water pump is normally open, and the endurance of the whole vehicle is reduced; however, the temperature of the motor controller needs to reach a certain preset value, and then the cooling is started, the value is too high, the accelerator is stepped on at a low speed 'depth', the heat productivity of the motor controller is large, the temperature of the motor controller is sharply high, and the cooling is started when the temperature reaches the value, so that the cooling is not timely, the motor controller is too high, the power is actively limited by the motor controller, and the dynamic property of the whole vehicle is influenced; if the preset value is too low, the motor controller quickly reaches a cooling temperature threshold value when the accelerator is stepped on at low speed in a 'moderate' state, and cooling is started. The motor controller temperature can reduce rapidly after opening the cooling, reduces to the water pump and closes the threshold value, and the water pump is closed, and this kind of scene appears the frequency in normal driving scene more than, can lead to the water pump to start frequently, influences the water pump life-span.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. To this end, an object of the present invention is to propose a motor controller cooling method, a storage medium, a vehicle, and a cooling device.
A motor controller cooling method in an electric vehicle according to an aspect of the present invention includes: obtaining the phase current of a motor and obtaining the temperature of a motor controller; when the motor phase current is determined to be larger than or equal to a preset current threshold, performing virtual heat accumulation calculation by adopting a water tank method according to the motor phase current to obtain a heat calculation value, and judging whether the heat calculation value is larger than or equal to a first heat threshold or not; if the heat calculated value is larger than or equal to a first heat threshold value, judging whether the temperature of the motor controller is larger than or equal to a first preset temperature; and if the temperature of the motor controller is greater than or equal to a first preset temperature, controlling a cooling water pump to be started and operated so as to cool the motor controller.
According to the motor controller cooling method, virtual heat accumulation calculation is carried out by judging the magnitude of the motor phase current and the preset current threshold, the heat calculation value is compared with the first heat threshold, and the temperature of the motor controller and the first preset temperature are taken into consideration to serve as the adjustment of the opening of the cooling water pump, so that the ratio of the opening duration of the water pump is reduced, the energy consumption of an electric vehicle is reduced, the endurance mileage of the electric vehicle is improved, the opening times of the water pump can be reduced, and the service life of the water pump is prolonged.
According to an embodiment of the invention, during the operation of the cooling water pump, the temperature of the cooling liquid is also obtained, and the rotating speed of the cooling water pump and the rotating speed of the cooling fan are controlled according to the temperature of the cooling liquid, the temperature of the motor controller and the calculated value of the heat quantity.
According to an embodiment of the present invention, controlling the rotation speed of the cooling water pump and the rotation speed of the radiator fan according to the temperature of the coolant, the temperature of the motor controller, and the calculated heat amount includes: and adjusting the rotating speed of the cooling water pump according to the temperature of the cooling liquid, the temperature of the motor controller and the heat calculated value until the rotating speed of the cooling water pump reaches a preset maximum rotating speed, and adjusting the rotating speed of the cooling fan according to the temperature of the cooling liquid, the temperature of the motor controller and the heat calculated value until the rotating speed of the cooling fan reaches a preset maximum rotating speed.
According to an embodiment of the present invention, the adjusting the rotation speed of the cooling water pump according to the coolant temperature, the temperature of the motor controller, and the calculated heat amount value includes: determining a first water pump rotating speed according to the temperature of the cooling liquid, determining a second water pump rotating speed according to the temperature of the motor controller, and determining a third water pump rotating speed according to the heat calculation value; and acquiring the maximum water pump rotating speed of the first water pump rotating speed, the second water pump rotating speed and the third water pump rotating speed as the target rotating speed of the cooling water pump, and regulating the rotating speed of the cooling water pump according to the target rotating speed of the cooling water pump.
According to an embodiment of the present invention, the adjusting the rotation speed of the heat dissipation fan according to the coolant temperature, the temperature of the motor controller, and the calculated heat amount value includes: determining a first fan speed according to the temperature of the cooling liquid, determining a second fan speed according to the temperature of the motor controller, and determining a third fan speed according to the calculated value of the heat quantity; and acquiring the maximum fan rotating speed of the first fan rotating speed, the second fan rotating speed and the third fan rotating speed as the target rotating speed of the heat radiation fan, and adjusting the rotating speed of the heat radiation fan according to the target rotating speed of the heat radiation fan.
According to one embodiment of the invention, obtaining motor phase currents includes: acquiring the running rotating speed of a motor and acquiring the running torque of the motor; and inquiring a preset phase current equivalent graph according to the running rotating speed and the running torque of the motor so as to obtain the phase current of the motor.
According to an embodiment of the invention, when it is determined that the motor phase current is less than a preset current threshold, if the temperature of the motor controller is greater than or equal to a first preset temperature, the cooling water pump is controlled to be started and operated, and during the operation of the cooling water pump, the temperature of the cooling water is further obtained, and the rotating speed of the cooling water pump and the rotating speed of the cooling fan are controlled according to the temperature of the cooling water and the temperature of the motor controller.
A computer-readable storage medium according to a second aspect of the invention is described below.
According to the computer-readable storage medium of the present invention, there is stored thereon a motor controller cooling program in an electric vehicle, which when executed by a processor, implements a motor controller cooling method as described in any one of the above embodiments.
An electric vehicle according to a third aspect of the invention is described below.
The electric automobile comprises a memory, a processor and a motor controller cooling program in the electric automobile, wherein the motor controller cooling program is stored in the memory and can run on the processor, and when the processor executes the motor controller cooling program in the electric automobile, the motor controller cooling method in any one of the embodiments is realized.
A motor controller cooling device according to a fourth aspect of the invention is described below.
A motor controller cooling apparatus in an electric vehicle includes: the device comprises a first acquisition module, a second acquisition module, a heat calculation module, a judgment module and a control module, wherein the first acquisition module is used for acquiring the phase current of the motor; the second acquisition module is used for acquiring the temperature of the motor controller; the heat calculation module is used for performing virtual heat accumulation calculation by adopting a water tank method according to the motor phase current when the motor phase current is greater than or equal to a preset current threshold value to obtain a heat calculation value and judging whether the heat calculation value is greater than or equal to a first heat threshold value; the judgment module is used for judging whether the temperature of the motor controller is greater than or equal to a first preset temperature or not when the heat calculation value is greater than or equal to a first heat threshold value; the control module is used for controlling the cooling water pump to be started and operated when the temperature of the motor controller is larger than or equal to a first preset temperature so as to cool the motor controller. The cooling device of the motor controller can reduce the energy consumption of the electric automobile, prolong the service life of the water pump and improve the heat dissipation effect and the safety of the motor controller.
Additional aspects and advantages of the invention 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 invention.
Drawings
The above and/or additional aspects and advantages of the present invention 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 flow chart of a motor controller cooling method according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a vehicle according to an embodiment of the invention;
fig. 3 is a schematic structural view of a motor controller cooling device according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a cooling circuit according to an embodiment of the present invention;
FIG. 5 is a graph of operating torque, operating speed, and phase current according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of the relationship between the temperature of the motor controller and the temperature of the cooling liquid and the rotation speed of the water pump and the fan, respectively, according to an embodiment of the present invention.
Reference numerals:
the electric vehicle 100, the memory 110, the processor 120,
the motor controller cooling device 200, the first acquiring module 210, the second acquiring module 220, the heat calculating module 230, the judging module 240, the control module 250,
the cooling system comprises a cooling loop 300, a motor 310, a motor controller 320, a vehicle-mounted charger direct current converter 330, a heat exchange part 340, a fan 350 and a cooling water pump 360.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
A method of cooling the motor controller 320 in the electric vehicle 100 according to the embodiment of the invention is described below with reference to fig. 1 to 6.
As shown in fig. 1, the cooling method of the motor controller 320 according to the present invention includes: obtaining motor phase current and obtaining the temperature of the motor controller 320; when the motor phase current is determined to be larger than or equal to a preset current threshold, performing virtual heat accumulation calculation by adopting a refrigerator method according to the motor phase current to obtain a heat calculation value, and judging whether the heat calculation value is larger than or equal to a first heat threshold or not; if the calculated heat value is greater than or equal to the first heat threshold value, the temperature of the motor controller 320 is judged to be greater than a first preset temperature; if the temperature of the motor controller 320 is greater than the first preset temperature, the water pump 360 is controlled to be turned on and operated to cool the motor controller 320.
In the related technology, the water pump is kept normally open during the running process of the vehicle, so that the motor controller 320 can be prevented from being cooled untimely, but the battery system is consumed by the normally open water pump, and the endurance of the whole vehicle is reduced; however, the temperature of the motor controller 320 needs to reach a certain preset value, and then cooling needs to be started, the value is too high, the accelerator is stepped on at a low speed in a deep manner, the heat productivity of the motor controller 320 is large, the temperature of the motor controller 320 is sharply high, and cooling is started only when the temperature reaches the value, so that untimely cooling may be caused, the motor controller 320 is too high, the motor controller 320 actively limits power, and the dynamic property of the whole vehicle is influenced; if the preset value is too low, the motor controller 320 will reach the cooling temperature threshold quickly when the throttle is stepped on at a low speed "moderate", and the cooling will be started. The temperature of the motor controller 320 can be rapidly reduced after the cooling is started, the water pump is shut down when the temperature is reduced to a water pump shut-down threshold value, the frequency of the water pump is more in a normal driving scene, the water pump can be started frequently, and the service life of the water pump is influenced.
According to the cooling method of the motor controller 320 of the present invention, by obtaining the phase current of the motor, the water tank method is used to perform the accumulated heat calculation only when the phase current is not less than the preset current threshold, and when the phase current is less than the preset threshold, the heat dissipation capacity of the motor controller 320 is generally less than the heat dissipation capacity of the motor controller 320, and at this time, the accumulated heat does not exist in the motor controller 320, and when the phase current of the motor controller 320 is greater than the preset current threshold, it can be determined that the heat of the motor controller 320 starts to accumulate.
In the accumulation process, the heat value accumulated by the motor controller 320 is calculated by using a water tank method, whether the heat value is greater than a first heat threshold value or not is judged, and when the heat value is greater than the first heat threshold value, it can be determined that the motor controller 320 needs to dissipate heat.
The water tank method can be that when the phase current I is more than or equal to I0, the heat calculation value is used as a positive integral, I is less than I0, the negative integral is used, the heat calculation value Q is Qmax, cooling is started, and when the heat calculation value Q is less than or equal to 0, cooling is stopped.
In order to further avoid frequent start and stop of the water pump, after the calculated value of the heat is greater than the first heat threshold value, whether the temperature of the motor controller 320 is greater than a first preset temperature is further judged, and after the temperature of the motor controller 320 is greater than the first preset temperature, the cooling water pump is controlled to be started and operated to cool the motor controller 320.
Through setting up the first temperature of predetermineeing to avoid motor controller 320's short time high temperature under the low-speed degree of depth trample condition, need not to open water pump 360 this moment, motor controller 320's radiating rate can satisfy its heat dissipation demand completely, ensures that motor controller 320 keeps at safe state, can reduce the frequency of opening of water pump simultaneously, has prolonged the life of water pump, has guaranteed motor controller 320's heat dissipation demand simultaneously.
According to the cooling method of the motor controller 320, the virtual heat accumulation calculation is carried out by judging the magnitude of the motor phase current and the preset current threshold, the heat calculation value is compared with the first heat threshold, and the temperature of the motor controller 320 and the first preset temperature are taken into consideration to be used as the adjustment for starting the cooling water pump, so that the starting time ratio of the water pump is reduced, the energy consumption of the electric vehicle 100 is reduced, the endurance mileage of the electric vehicle 100 is improved, the starting times of the water pump can be reduced, and the service life of the water pump is prolonged.
According to an embodiment of the present invention, during the operation of the cooling water pump 360, the temperature of the cooling liquid is also obtained, and the rotation speed of the cooling water pump and the rotation speed of the cooling fan 350 are controlled according to the temperature of the cooling liquid, the temperature of the motor controller 320, and the calculated value of the heat quantity.
The electric vehicle 100 is provided with a cooling circuit 300, the cooling circuit 300 can connect a motor controller 320, a motor 310, a vehicle-mounted charger dc converter 330, a heat exchange part 340 and a cooling water pump 360 in series, the cooling water pump 360 is used for providing power for a cooling medium in the cooling circuit 300 to drive the cooling medium to flow, a heat dissipation part is provided with a heat dissipation fin for exchanging heat with air flow so as to reduce heat of the cooling medium, the vehicle is further provided with a heat dissipation fan 350, the heat dissipation fan 350 is opposite to the heat exchange part 340, the heat dissipation fan 350 rotates to improve air flow flowing through the heat exchange part 340, so that heat exchange efficiency of the heat exchange part 340 is improved, and heat dissipation effects on the motor controller 320 and the motor are improved.
As shown in fig. 6, when the rotational speed of the cooling water pump is adjusted according to the temperature of the cooling liquid, the temperature of the motor controller 320, and the calculated heat amount until the rotational speed of the cooling water pump reaches a preset maximum rotational speed, the rotational speed of the heat dissipation fan 350 is adjusted according to the temperature of the cooling liquid, the temperature of the motor controller 320, and the calculated heat amount until the rotational speed of the heat dissipation fan 350 reaches a preset maximum rotational speed.
Along with the gradual increase of the temperature of the cooling liquid, the temperature of the motor controller 320 and the heat calculation value, the rotating speed of the water pump and the rotating speed of the fan 350 are correspondingly increased, so that the heat dissipation effect of the cooling liquid on the motor controller 320 is improved, the overheating of the motor controller 320 is avoided, and the stability of the motor controller 320 with the motor is ensured.
And determining the rotating speed of the first water pump according to the temperature of the cooling liquid, determining the rotating speed of the second water pump according to the temperature of the motor controller 320, determining the rotating speed of the third water pump according to the heat calculation value, acquiring the maximum rotating speed of the first water pump, the second water pump and the third water pump as the target rotating speed of the cooling water pump, and adjusting the rotating speed of the cooling water pump according to the target rotating speed of the cooling water pump.
Specifically, the corresponding relation between the coolant temperature and the first water pump rotation speed can be calibrated or set in advance according to the test process of the electric vehicle 100, in the corresponding relation table of the coolant temperature and the first water pump rotation speed, each coolant temperature corresponds to one first water pump rotation speed, the first water pump rotation speed is the rotation speed of the cooling water pump at the coolant temperature, and under the first water pump rotation speed, the cooling water pump has the characteristics of low energy consumption and good heat dissipation effect, and can adapt to the current coolant temperature.
Specifically, the correspondence between the temperature of the motor controller 320 and the rotation speed of the second water pump may be calibrated or set in advance according to the test process of the electric vehicle 100, in the correspondence table between the temperature of the motor controller 320 and the rotation speed of the second water pump, the temperature of each motor controller 320 corresponds to one rotation speed of the second water pump, the rotation speed of the second water pump is the rotation speed of the cooling water pump at the temperature of the motor controller 320, and at the rotation speed of the second water pump, the cooling water pump has the characteristics of low energy consumption and good heat dissipation effect, and can adapt to the current temperature of the motor controller 320.
Specifically, the correspondence between the calculated heat values and the rotational speed of the third water pump may be calibrated or set in advance according to a test process of the electric vehicle 100, each calculated heat value corresponds to one rotational speed of the third water pump in a correspondence table of the calculated heat values and the rotational speed of the third water pump, the rotational speed of the third water pump is the rotational speed of the cooling water pump at the calculated heat value, and the cooling water pump has the characteristics of low energy consumption and good heat dissipation effect at the rotational speed of the third water pump, and can adapt to the current calculated heat value.
After obtaining first water pump rotational speed, second water pump rotational speed and third water pump rotational speed, select the rotational speed maximum value as the target rotational speed through the comparison to adjust cooling water pumping spare, make cooling water pumping can satisfy motor controller 320's heat dissipation demand.
Further, a first fan rotational speed is determined according to the coolant temperature, and the rotational speed of the second fan 350 is determined according to the temperature of the motor controller 320, and a third fan rotational speed is determined according to the calorimetric values, and the maximum fan rotational speed among the first fan rotational speed, the second fan rotational speed, and the third fan rotational speed is acquired as the target rotational speed of the fan 350, and the rotational speed of the fan 350 is adjusted according to the target rotational speed of the fan 350.
The corresponding relation between the coolant temperature and the first fan speed can be calibrated or set in advance according to the test process of the electric vehicle 100, in the corresponding relation table of the coolant temperature and the first fan speed, each coolant temperature corresponds to one first fan speed, the first fan speed is the speed of the fan 350 at the coolant temperature, and under the first fan speed, the fan 350 has the characteristics of low energy consumption and good heat dissipation effect, and the heat dissipation effect of the heat dissipation part can be effectively improved.
The correspondence between the temperature of the motor controller 320 and the second fan speeds may be calibrated or set in advance according to the test process of the electric vehicle 100, in the correspondence table between the temperature of the motor controller 320 and the second fan speeds, each temperature of the motor controller 320 corresponds to one second fan speed, the second fan speed is the speed of the fan 350 at the temperature of the motor controller 320, and at the second fan speed, the fan 350 has the characteristics of low energy consumption and good heat dissipation effect, and can effectively improve the heat dissipation effect of the heat dissipation portion.
The correspondence between the calculated values of the heat and the rotational speeds of the third fans may be calibrated or set in advance according to the test process of the electric vehicle 100, and in the correspondence table between the calculated values of the heat and the rotational speeds of the third fans, each calculated value of the heat corresponds to one rotational speed of the third fan, and the fan 350 has the characteristics of low energy consumption and good heat dissipation effect, and can effectively improve the heat dissipation effect of the heat dissipation portion.
After the first fan rotating speed, the second fan rotating speed and the third fan rotating speed are obtained, the highest rotating speed value is selected as the target rotating speed through comparison, so that the fans 350 are adjusted to rotate at the target rotating speed, and the heat dissipation requirements of the heat dissipation portion can be met.
As shown in fig. 5, according to an embodiment of the present invention, a method for obtaining a phase current of a motor includes: acquiring the running rotating speed of a motor and acquiring the running torque of the motor; and inquiring a preset phase current equivalent graph according to the running rotating speed and the running torque of the motor so as to obtain the phase current of the motor. The current equivalent diagram comprises corresponding phase currents under different operation rotating speeds and different operation torques, and the corresponding current magnitude is inquired in the current equivalent diagram according to the operation rotating speeds and the operation torques and is used as the phase current of the electrode, so that the heat calculation value is further calculated according to the phase current.
According to an embodiment of the present invention, when it is determined that the motor phase current is less than the preset current threshold, if the temperature of the motor controller 320 is greater than or equal to the first preset temperature, the cooling water pump is controlled to be started and operated, and during the operation of the cooling water pump, the temperature of the cooling water is also obtained, and the rotation speed of the cooling water pump and the rotation speed of the cooling fan 350 are controlled according to the temperature of the cooling water and the temperature of the motor controller 320. So as to meet the heat dissipation requirement of the electrode controller under the condition that the phase current is less than the preset current threshold.
A computer-readable storage medium according to a second aspect of the invention is described below.
A computer-readable storage medium according to the present invention, on which a motor controller 320 cooling program in an electric vehicle 100 is stored, the motor controller 320 cooling program in the electric vehicle 100 implementing a motor controller cooling method as described in any one of the above embodiments when executed by a processor 120.
An electric vehicle 100 according to a third aspect of the invention is described below.
As shown in fig. 2, the electric vehicle according to the present invention includes a memory 110, a processor 120, and a cooling program for a motor controller 320 in the electric vehicle 100 stored in the memory 110 and operable on the processor 120, and when the processor 120 executes the cooling program for the motor controller 320 in the electric vehicle 100, the method for cooling the motor controller 320 according to any one of the above embodiments is implemented.
The following describes a motor controller cooling device 200 according to a fourth aspect of the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present invention.
In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.
In the description of the present invention, "a plurality" means two or more.
In the description of the present invention, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.
In the description of the invention, "over," "above," and "on" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean 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 invention. In this specification, the schematic representations of the terms used above do not necessarily 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 more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A method of cooling a motor controller in an electric vehicle, comprising:
obtaining motor phase current and obtaining the temperature of a motor controller;
when the motor phase current is determined to be larger than or equal to a preset current threshold, performing virtual heat accumulation calculation by adopting a water tank method according to the motor phase current to obtain a heat calculation value, and judging whether the heat calculation value is larger than or equal to a first heat threshold or not;
if the heat calculated value is larger than or equal to a first heat threshold value, judging whether the temperature of the motor controller is larger than or equal to a first preset temperature;
and if the temperature of the motor controller is greater than or equal to a first preset temperature, controlling a cooling water pump to be started and operated so as to cool the motor controller.
2. The motor controller cooling method in an electric vehicle according to claim 1, wherein during operation of the cooling water pump, a cooling liquid temperature is also acquired, and the rotational speed of the cooling water pump and the rotational speed of the radiator fan are controlled based on the cooling liquid temperature, the temperature of the motor controller, and the calculated heat amount.
3. The motor controller cooling method in an electric vehicle according to claim 2, wherein controlling the rotation speed of the cooling water pump and the rotation speed of the radiator fan based on the coolant temperature, the temperature of the motor controller, and the calculated heat amount value includes:
and adjusting the rotating speed of the cooling water pump according to the temperature of the cooling liquid, the temperature of the motor controller and the heat calculated value until the rotating speed of the cooling water pump reaches a preset maximum rotating speed, and adjusting the rotating speed of the cooling fan according to the temperature of the cooling liquid, the temperature of the motor controller and the heat calculated value until the rotating speed of the cooling fan reaches a preset maximum rotating speed.
4. The motor controller cooling method in an electric vehicle according to claim 3, wherein the rotational speed adjustment of the cooling water pump based on the coolant temperature, the temperature of the motor controller, and the heat calculation value includes:
determining a first water pump rotating speed according to the temperature of the cooling liquid, determining a second water pump rotating speed according to the temperature of the motor controller, and determining a third water pump rotating speed according to the heat calculation value;
and acquiring the maximum water pump rotating speed of the first water pump rotating speed, the second water pump rotating speed and the third water pump rotating speed as the target rotating speed of the cooling water pump, and regulating the rotating speed of the cooling water pump according to the target rotating speed of the cooling water pump.
5. The method of claim 3, wherein the adjusting the speed of the heat dissipation fan based on the temperature of the coolant, the temperature of the motor controller, and the calculated heat value comprises:
determining a first fan speed according to the temperature of the cooling liquid, determining a second fan speed according to the temperature of the motor controller, and determining a third fan speed according to the calculated value of the heat quantity;
and acquiring the maximum fan rotating speed of the first fan rotating speed, the second fan rotating speed and the third fan rotating speed as the target rotating speed of the heat radiation fan, and adjusting the rotating speed of the heat radiation fan according to the target rotating speed of the heat radiation fan.
6. The method of cooling a motor controller in an electric vehicle of any of claims 1-5, wherein obtaining motor phase current comprises:
acquiring the running rotating speed of a motor and acquiring the running torque of the motor;
and inquiring a preset phase current equivalent diagram according to the running rotating speed of the motor and the running torque of the motor to obtain the phase current of the motor.
7. The motor controller cooling method in an electric vehicle according to claim 1, wherein when it is determined that the motor phase current is less than a preset current threshold value, if the temperature of the motor controller is equal to or greater than a first preset temperature, the cooling water pump is controlled to be turned on and operated, and during the operation of the cooling water pump, a temperature of the cooling water is also obtained, and the rotational speed of the cooling water pump and the rotational speed of the radiator fan are controlled according to the temperature of the cooling water and the temperature of the motor controller.
8. A computer-readable storage medium, characterized in that a motor controller cooling program in an electric vehicle, which when executed by a processor, implements a motor controller cooling method in an electric vehicle according to any one of claims 1 to 7, is stored thereon.
9. An electric vehicle comprising a memory, a processor, and an electric vehicle motor controller cooling program stored in the memory and executable on the processor, wherein the processor, when executing the electric vehicle motor controller cooling program, implements the electric vehicle motor controller cooling method according to any one of claims 1 to 7.
10. A motor controller cooling apparatus in an electric vehicle, characterized by comprising:
the first acquisition module is used for acquiring the phase current of the motor;
the second acquisition module is used for acquiring the temperature of the motor controller;
the heat calculation module is used for carrying out virtual heat accumulation calculation by adopting a water tank method according to the motor phase current when the motor phase current is greater than or equal to a preset current threshold value so as to obtain a heat calculation value and judging whether the heat calculation value is greater than or equal to a first heat threshold value or not;
the judgment module is used for judging whether the temperature of the motor controller is greater than or equal to a first preset temperature or not when the heat calculation value is greater than or equal to a first heat threshold value;
and the control module is used for controlling the cooling water pump to be started and operated when the temperature of the motor controller is greater than or equal to a first preset temperature so as to cool the motor controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110236437.5A CN115023095A (en) | 2021-03-03 | 2021-03-03 | Motor controller cooling method, storage medium, vehicle, and cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110236437.5A CN115023095A (en) | 2021-03-03 | 2021-03-03 | Motor controller cooling method, storage medium, vehicle, and cooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115023095A true CN115023095A (en) | 2022-09-06 |
Family
ID=83064159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110236437.5A Pending CN115023095A (en) | 2021-03-03 | 2021-03-03 | Motor controller cooling method, storage medium, vehicle, and cooling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115023095A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115580082A (en) * | 2022-10-24 | 2023-01-06 | 江阴市海达电机冲片有限公司 | Heat dissipation processing system and method for iron core of variable-pitch servo motor of wind turbine generator |
| CN116291850A (en) * | 2023-02-03 | 2023-06-23 | 重庆赛力斯新能源汽车设计院有限公司 | Method, device, equipment and storage medium for detecting cooling liquid of internal combustion engine |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005287149A (en) * | 2004-03-29 | 2005-10-13 | Toyota Motor Corp | Temperature regulator and temperature regulating method |
| CN101549637A (en) * | 2009-05-12 | 2009-10-07 | 奇瑞汽车股份有限公司 | Electric automobile cooling system and control method thereof |
| CN105196860A (en) * | 2015-10-27 | 2015-12-30 | 莆田市云驰新能源汽车研究院有限公司 | Temperature control type electrical automobile cooling method and system |
| US20160159246A1 (en) * | 2014-12-09 | 2016-06-09 | Hyundai Motor Company | System and method for cooling electric vehicle |
| CN106374682A (en) * | 2016-09-30 | 2017-02-01 | 安徽江淮汽车股份有限公司 | Cooling method and system of hybrid power motor |
| CN106759617A (en) * | 2016-12-09 | 2017-05-31 | 广西玉柴重工有限公司 | A kind of battery is powered the cooling system of electric hydraulic excavating machine |
| CN206323727U (en) * | 2016-12-29 | 2017-07-11 | 上海力信电气技术有限公司 | Electric vehicle motor controller water-cooling heat radiating device |
| CN107499176A (en) * | 2017-05-05 | 2017-12-22 | 宝沃汽车（中国）有限公司 | The cooling means and device of vehicle power drive system |
| JP2018070122A (en) * | 2016-11-04 | 2018-05-10 | トヨタ自動車株式会社 | Cooling system for vehicle |
| CN108068610A (en) * | 2016-11-15 | 2018-05-25 | 大陆汽车投资（上海）有限公司 | The control device and method of electric vehicle cooling system |
| CN108501689A (en) * | 2017-02-28 | 2018-09-07 | 长城汽车股份有限公司 | Thermal management algorithm, system and the vehicle of vehicle high-voltage attachment |
| CN108705956A (en) * | 2018-04-24 | 2018-10-26 | 安徽江淮汽车集团股份有限公司 | A kind of the electric machine controller temperature control system and method for electric vehicle |
| US20190047364A1 (en) * | 2017-08-08 | 2019-02-14 | Toyota Jidosha Kabushiki Kaisha | Cooling device for vehicle and control method for vehicle |
| CN109552021A (en) * | 2019-01-23 | 2019-04-02 | 核心驱动科技（金华）有限公司 | Cooling control system, cooling control method, cooling controller and electric car |
| US20200198437A1 (en) * | 2018-12-20 | 2020-06-25 | Subaru Corporation | Temperature control system for electric vehicle and method of controlling temperature of electric vehicle |
| WO2020135736A1 (en) * | 2018-12-28 | 2020-07-02 | 长城汽车股份有限公司 | Vehicle cooling control method and system |
| CN112072857A (en) * | 2020-08-10 | 2020-12-11 | 北京汽车股份有限公司 | New energy automobile motor cooling system control method and device and new energy automobile |
-
2021
- 2021-03-03 CN CN202110236437.5A patent/CN115023095A/en active Pending
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005287149A (en) * | 2004-03-29 | 2005-10-13 | Toyota Motor Corp | Temperature regulator and temperature regulating method |
| CN101549637A (en) * | 2009-05-12 | 2009-10-07 | 奇瑞汽车股份有限公司 | Electric automobile cooling system and control method thereof |
| US20160159246A1 (en) * | 2014-12-09 | 2016-06-09 | Hyundai Motor Company | System and method for cooling electric vehicle |
| CN105196860A (en) * | 2015-10-27 | 2015-12-30 | 莆田市云驰新能源汽车研究院有限公司 | Temperature control type electrical automobile cooling method and system |
| CN106374682A (en) * | 2016-09-30 | 2017-02-01 | 安徽江淮汽车股份有限公司 | Cooling method and system of hybrid power motor |
| JP2018070122A (en) * | 2016-11-04 | 2018-05-10 | トヨタ自動車株式会社 | Cooling system for vehicle |
| CN108068610A (en) * | 2016-11-15 | 2018-05-25 | 大陆汽车投资（上海）有限公司 | The control device and method of electric vehicle cooling system |
| CN106759617A (en) * | 2016-12-09 | 2017-05-31 | 广西玉柴重工有限公司 | A kind of battery is powered the cooling system of electric hydraulic excavating machine |
| CN206323727U (en) * | 2016-12-29 | 2017-07-11 | 上海力信电气技术有限公司 | Electric vehicle motor controller water-cooling heat radiating device |
| CN108501689A (en) * | 2017-02-28 | 2018-09-07 | 长城汽车股份有限公司 | Thermal management algorithm, system and the vehicle of vehicle high-voltage attachment |
| CN107499176A (en) * | 2017-05-05 | 2017-12-22 | 宝沃汽车（中国）有限公司 | The cooling means and device of vehicle power drive system |
| US20190047364A1 (en) * | 2017-08-08 | 2019-02-14 | Toyota Jidosha Kabushiki Kaisha | Cooling device for vehicle and control method for vehicle |
| CN108705956A (en) * | 2018-04-24 | 2018-10-26 | 安徽江淮汽车集团股份有限公司 | A kind of the electric machine controller temperature control system and method for electric vehicle |
| US20200198437A1 (en) * | 2018-12-20 | 2020-06-25 | Subaru Corporation | Temperature control system for electric vehicle and method of controlling temperature of electric vehicle |
| WO2020135736A1 (en) * | 2018-12-28 | 2020-07-02 | 长城汽车股份有限公司 | Vehicle cooling control method and system |
| CN109552021A (en) * | 2019-01-23 | 2019-04-02 | 核心驱动科技（金华）有限公司 | Cooling control system, cooling control method, cooling controller and electric car |
| CN112072857A (en) * | 2020-08-10 | 2020-12-11 | 北京汽车股份有限公司 | New energy automobile motor cooling system control method and device and new energy automobile |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115580082A (en) * | 2022-10-24 | 2023-01-06 | 江阴市海达电机冲片有限公司 | Heat dissipation processing system and method for iron core of variable-pitch servo motor of wind turbine generator |
| CN115580082B (en) * | 2022-10-24 | 2023-03-17 | 江阴市海达电机冲片有限公司 | Heat dissipation processing system and method for iron core of variable-pitch servo motor of wind turbine generator |
| CN116291850A (en) * | 2023-02-03 | 2023-06-23 | 重庆赛力斯新能源汽车设计院有限公司 | Method, device, equipment and storage medium for detecting cooling liquid of internal combustion engine |
| CN116291850B (en) * | 2023-02-03 | 2024-04-16 | 重庆赛力斯新能源汽车设计院有限公司 | Method, device, equipment and storage medium for detecting cooling liquid of internal combustion engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107471989B (en) | Cooling system control method, cooling system and vehicle | |
| CN115023095A (en) | Motor controller cooling method, storage medium, vehicle, and cooling device | |
| CN112848879B (en) | Vehicle heat dissipation method, storage medium and vehicle | |
| CN211765062U (en) | Battery thermal management system for extended range vehicle | |
| WO2022033438A1 (en) | Thermal management control method and apparatus, and vehicle | |
| CN109649187B (en) | Driving power control method and device of electric automobile and electric automobile with driving power control device | |
| JP5699919B2 (en) | Warm-up operation control device | |
| EP3904139A1 (en) | Vehicle cooling control method and system | |
| CN109356707B (en) | Control method of water pump for engine | |
| CN106608179A (en) | Cooling device of pure-electric logistics vehicle and control method of cooling device | |
| US20170313195A1 (en) | Method for driving and thermally regulating a range extending system for a motor vehicle | |
| WO2024066359A1 (en) | Method and apparatus for controlling heat distribution of electric vehicle, storage medium, and device | |
| CN116353334B (en) | Intelligent grid control system applicable to various vehicle types | |
| JP2008236955A (en) | Cooling system, and control method and vehicle therefor | |
| JP2005248730A (en) | Electric compressor | |
| JP4052256B2 (en) | Temperature control device | |
| JP3894180B2 (en) | Hybrid vehicle cooling system | |
| JP4059044B2 (en) | Vehicle control device | |
| JP2011195065A (en) | Vehicular control device | |
| CN114953976A (en) | Intelligent heat dissipation control method for vehicle electric drive system | |
| CN115149150A (en) | Battery thermal management system, control method and vehicle | |
| JP2018066279A (en) | Vehicle cooling system | |
| JP2012031811A (en) | Device for controlling electric water pump | |
| CN114590171A (en) | Control method of thermal management system, thermal management system and vehicle | |
| JP2020082804A (en) | Vehicular cooling apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |