CN115158003A - Control method and control system of all-in-one electric-driven cooling system - Google Patents
Control method and control system of all-in-one electric-driven cooling system Download PDFInfo
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- CN115158003A CN115158003A CN202210733207.4A CN202210733207A CN115158003A CN 115158003 A CN115158003 A CN 115158003A CN 202210733207 A CN202210733207 A CN 202210733207A CN 115158003 A CN115158003 A CN 115158003A
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- 238000001816 cooling Methods 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 22
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 claims abstract description 49
- 239000000110 cooling liquid Substances 0.000 claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 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
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- 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
- B60K1/00—Arrangement or mounting of electrical propulsion units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
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- 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
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
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- 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
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
- B60K2001/006—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric motors
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Power Engineering (AREA)
- Automation & Control Theory (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention discloses a control method and a control system of an all-in-one electric-driven cooling system. The control method comprises the following steps: 1. the OBC and DCDC integrated controller judges the flow rate grade of the required cooling liquid according to the water inlet temperature, the temperature of the OBC power tube and the temperature of the DCDC power tube, and reports the flow rate grade of the cooling liquid to the motor controller; 2. the motor controller compares the flow rate grade of the cooling liquid of the motor controller with the flow rate grade of the cooling liquid of the OBC & DCDC integrated controller, and a larger flow rate grade of the cooling liquid is taken and reported to the KO controller of the whole vehicle; 3. and the vehicle controller reports the cooling liquid grade reported by the motor controller to the water pump, and the water pump outputs the corresponding cooling liquid flow rate to the electric driving system according to the request of the vehicle controller. The control system comprises an OBC & DCDC integrated controller, a motor controller, a driving motor and a VCU; the OBC & DCDC integrated controller and the driving motor are connected with the motor controller; the motor controller is connected with the VCU; the invention can lead each sub-part of the electric drive system to work at reasonable temperature, thereby solving the problems of long service life and high energy consumption.
Description
Technical Field
The invention belongs to the technical field of automobiles, and particularly relates to a control method and a control system of an all-in-one electric drive cooling system.
Background
In recent years, with the development of new energy electric vehicles, customers have increasingly high requirements for electric vehicles. At present, people pay attention to the environmental protection and the endurance of the electric vehicle, and the service life, the performance and the new technology of the new energy vehicle are also important indexes for evaluating the quality of the electric vehicle. Along with new energy automobile performance constantly promotes, the power and the moment of torsion of electricity driving system also constantly promote, can produce more heats at the operation in-process, formulate reasonable electricity driving system cooling strategy and can make driving motor work in reasonable temperature interval, guarantee the performance of whole car and the life who drives electrically.
The life of an electric drive system can be greatly affected if it is operated at higher temperatures under most operating conditions. However, if the cooling system is always cooling according to the maximum cooling effect, the energy consumption is high, and unnecessary waste is caused. It becomes an important issue to ensure that the electric drive system operates in the normal temperature range and to avoid unnecessary waste.
Disclosure of Invention
The invention provides a control method and a control system of an all-in-one electric drive cooling system, which can enable all sub-components of the electric drive system to work at a reasonable temperature and solve the problems of service life and high energy consumption.
The embodiments of the invention are described below with reference to the accompanying drawings:
in a first aspect, an embodiment of the present invention provides a control method for an all-in-one electric drive cooling system, including the following steps:
step one, the OBC & DCDC integrated controller judges the flow rate grade of the required cooling liquid according to the water inlet temperature, the temperature of an OBC power tube and the temperature of a DCDC power tube, and reports the flow rate grade of the cooling liquid to a motor controller;
step two, the motor controller compares the flow rate grade of the cooling liquid of the motor controller with the flow rate grade of the cooling liquid of the OBC & DCDC integrated controller, and a larger flow rate grade of the cooling liquid is selected and reported to the whole vehicle controller;
and step three, the vehicle control unit reports the cooling liquid grade reported by the motor controller to the water pump, the water pump executes according to the request of the vehicle control unit, and the cooling liquid with the corresponding flow speed is output to cool the all-in-one electric drive system.
Further, in the first step, the water inlet temperature is collected by a temperature sensor arranged at the water outlet of the cooling circuit water pump and is transmitted to the vehicle control unit, and the vehicle control unit transmits the water inlet temperature to the OBC & DCDC integrated controller through a CAN network; the working state of the motor controller is divided into a torque control state and a non-torque control state.
Further, in the first step, the cooling liquid is classified into 3 grades, and the grades are Level1=4L/min, level2=8L/min and Level3=12L/min respectively.
Further, the judging condition of the Level1 is as follows:
(1) The motor controller works in a non-torque control state;
(2) The motor controller can normally receive a controller cooling liquid flow rate grade request;
(3) The temperature of a water inlet is less than 55 ℃;
(4) The temperature of the OBC power tube is smaller than the temperature threshold To of the OBC power tube;
(5) The temperature of the DCDC power tube is less than a temperature threshold Td of the DCDC power tube;
when the Level is judged to be Level1, the above conditions need to be met simultaneously.
Further, the judging condition of the Level2 is as follows:
(1) The motor controller works in a torque control state;
(2) The motor controller works in a non-torque control state, and the motor controller cannot normally receive the flow rate grade request of the cooling liquid of the OBC & DCDC integrated controller;
(3) The motor controller works in a non-torque control state, the temperature of a water inlet is greater than 55 ℃, or the temperature of the OBC power tube is greater than the temperature threshold To of the OBC power tube, or the temperature of the DCDC power tube is greater than the temperature threshold Td of the DCDC power tube;
when the Level is judged to be Level2, the above conditions need to satisfy any one.
The judging condition of the Level3 is as follows:
(1) The temperature of the driving motor is greater than a motor temperature threshold Tc;
(2) The motor controller temperature is greater than a motor controller temperature threshold Tm.
When the Level is judged to be Level3, the above conditions need to satisfy any one.
In a second aspect, the embodiment of the invention further provides an all-in-one electric drive cooling system control system, which is used for realizing an all-in-one electric drive cooling system control method and comprises an OBC & DCDC integrated controller, a motor controller, a driving motor and a vehicle control unit; the OBC & DCDC integrated controller and the driving motor are connected with the motor controller.
The invention has the beneficial effects that:
1) The OBC and DCDC integrated controller sends the cooling request to the motor controller, the motor controller sends the total cooling request to the vehicle control unit by combining the cooling request of the motor controller with the cooling request of the motor controller, the OBC and the DCDC do not need to send the cooling requests to the vehicle control unit respectively, the vehicle control unit does not need to judge, and the cooling request is directly sent to the water pump, so that the control logic of the vehicle control unit is simplified
2) The flow rate of the cooling liquid is divided into three levels according to the working state of the motor controller, the temperature of the driving motor, the temperature of the motor controller, the temperature of a water inlet, the temperature of the OBC power tube and the temperature of the DCDC power tube. When the motor controller jumps from the non-torque control state to the torque control state and the instantaneous large torque output of the driving motor causes the temperature of the driving motor and the motor controller to rise suddenly, the control method can ensure that the driving motor and the motor controller are cooled in time, the service life of electric drive can be prolonged, and the failure rate is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a flow chart of a method for controlling an all-in-one electric drive cooling system according to the present invention;
FIG. 2 is a schematic diagram of a control system of an all-in-one electric drive cooling system according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
Example one
Referring to fig. 1, the present embodiment provides a control method for an all-in-one electric-driven cooling system, including the following steps:
step one, the OBC & DCDC integrated controller judges the flow rate grade of the required cooling liquid according to the water inlet temperature, the temperature of an OBC power tube and the temperature of a DCDC power tube, and reports the flow rate grade of the cooling liquid to a motor controller;
the temperature of the water inlet is collected by a temperature sensor arranged at the position of the water outlet of the cooling circuit water pump and is transmitted to the vehicle control unit, and the vehicle control unit transmits the temperature of the water inlet to the controller through a CAN (controller area network); the working state of the motor controller is divided into a torque control state and a non-torque control state.
The cooling liquid is divided into 3 grades, and the grades are respectively Level1=4L/min, level2=8L/min and Level3=12L/min.
The judging condition of the Level1 is as follows:
(1) The motor controller works in a non-torque control state;
(2) The motor controller can normally receive a controller cooling liquid flow rate grade request;
(3) The temperature of a water inlet is less than 55 ℃;
(4) The temperature of the OBC power tube is smaller than the temperature threshold To of the OBC power tube;
(5) The temperature of the DCDC power tube is smaller than a temperature threshold Td of the DCDC power tube;
when the Level is judged to be Level1, the above conditions need to be met simultaneously.
The judging condition of the Level2 is as follows:
(1) The motor controller works in a torque control state;
(2) The motor controller works in a non-torque control state, and the motor controller cannot normally receive the flow rate grade request of the cooling liquid of the OBC & DCDC integrated controller;
(3) The motor controller works in a non-torque control state, the temperature of a water inlet is greater than 55 ℃, or the temperature of the OBC power tube is greater than the temperature threshold To of the OBC power tube, or the temperature of the DCDC power tube is greater than the temperature threshold Td of the DCDC power tube;
when the Level is judged to be Level2, the above conditions need to satisfy any one.
The judging condition of the Level3 is as follows:
(1) The temperature of the driving motor is greater than a motor temperature threshold Tc;
(2) The motor controller temperature is greater than a motor controller temperature threshold Tm.
When the Level is judged to be Level3, the above conditions need to satisfy any one.
The threshold referred to above is set in advance.
Step two, the motor controller compares the flow rate grade of the cooling liquid of the motor controller with the flow rate grade of the cooling liquid of the OBC & DCDC integrated controller, and a larger flow rate grade of the cooling liquid is selected and reported to the whole vehicle controller;
and step three, the vehicle control unit reports the cooling liquid grade reported by the motor controller to the water pump, the water pump executes according to the request of the vehicle control unit, and the cooling liquid with the corresponding flow speed is output to cool the all-in-one electric drive system.
The specific judgment process is as follows: the motor controller judges whether the motor controller is in a torque control state, if the motor controller is in the torque control state, the motor controller judges whether the temperature of the driving motor is greater than a motor temperature threshold Tc and whether the temperature of the motor controller is greater than a motor controller temperature threshold Tm, if the temperature of the driving motor is greater than the motor temperature threshold Tc and the temperature of the motor controller is greater than the motor controller temperature threshold Tm, the motor controller requests a Level3 cooling liquid flow rate Level, otherwise, the motor controller requests a Level2 cooling liquid flow rate Level; if the motor controller is in a non-torque control state, the motor controller judges whether a cooling request of the OBC & DCDC integrated controller can be received, if the cooling request cannot be received, the motor controller requests a Level2 cooling liquid flow rate grade, if the cooling request can be received, the OBC & DCDC integrated controller judges whether the water inlet temperature is greater than 55 ℃, the OBC power tube temperature is greater than an OBC power tube temperature threshold To and the DCDC power tube temperature is greater than a DCDC power tube temperature threshold Td, if the water inlet temperature is greater than 55 ℃, the OBC power tube temperature is greater than an OBC power tube temperature threshold To and the DCDC power tube temperature is greater than a DCDC power tube temperature threshold Td, the motor controller requests a Level2 cooling liquid flow rate grade if the three meet one requirement, and otherwise, the motor controller requests a Level1 cooling liquid flow rate grade.
In the embodiment, the flow rate of the cooling liquid is divided into three levels according to the working state of the motor controller, the temperature of the driving motor, the temperature of the motor controller, the temperature of a water inlet, the temperature of an OBC power tube and the temperature of a DCDC power tube. When the motor controller jumps from the non-torque control state to the torque control state and the instantaneous large torque output of the driving motor causes the temperature of the driving motor and the motor controller to rise suddenly, the control method can ensure that the driving motor and the motor controller are cooled in time, the service life of electric drive can be prolonged, and the failure rate is reduced.
Example two
Referring to fig. 2, the embodiment further provides an all-in-one electric drive cooling system control system, which is used for realizing an all-in-one electric drive cooling system control method, and comprises an OBC & DCDC integrated controller, a motor controller, a driving motor and a vehicle control unit; the OBC & DCDC integrated controller and the driving motor are connected with the motor controller.
The OBC and DCDC integrated controller sends the cooling request to the motor controller, the motor controller sends a total cooling request to the vehicle control unit by combining with the cooling request of the motor controller, the OBC and the DCDC do not need to send the cooling requests to the vehicle control unit respectively, the vehicle control unit does not need to judge, and the cooling request is directly sent to the water pump, so that the control logic of the vehicle control unit is simplified.
While embodiments of the invention have been disclosed above, it is not intended to be limited to the applications set forth in the specification and the examples. It can be applied to all kinds of fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. It is therefore intended that the invention not be limited to the exact details and illustrations described and illustrated herein, but fall within the scope of the appended claims and equivalents thereof.
Claims (7)
1. An all-in-one electric drive cooling system control method is characterized by comprising the following steps:
step one, the OBC & DCDC integrated controller judges the flow rate grade of the required cooling liquid according to the water inlet temperature, the temperature of an OBC power tube and the temperature of a DCDC power tube, and reports the flow rate grade of the cooling liquid to a motor controller;
step two, comparing the flow rate grade of the cooling liquid of the motor controller with the flow rate grade of the cooling liquid of the OBC and DCDC integrated controller by the motor controller, and reporting the larger flow rate grade of the cooling liquid to the whole vehicle controller;
and step three, the vehicle control unit reports the cooling liquid grade reported by the motor controller to the water pump, the water pump executes according to the request of the vehicle control unit, and the cooling liquid with the corresponding flow speed is output to cool the all-in-one electric drive system.
2. The control method for the all-in-one electric drive cooling system according to claim 1, wherein in the first step, the water inlet temperature is collected by a temperature sensor arranged at the position of a water outlet of a water pump of the cooling circuit and is transmitted to a vehicle control unit, and the vehicle control unit transmits the water inlet temperature to an OBC & DCDC integrated controller through a CAN network; the working state of the motor controller is divided into a torque control state and a non-torque control state.
3. The control method for the all-in-one electric-driven cooling system according to claim 1, wherein in the first step, the cooling liquid is divided into 3 levels, namely Level1=4L/min, level2=8L/min and Level3=12L/min.
4. The control method of the all-in-one electric-driven cooling system according to claim 3, characterized in that the judging condition of the Level1 is as follows:
(1) The motor controller works in a non-torque control state;
(2) The motor controller can normally receive a controller cooling liquid flow rate grade request;
(3) The temperature of a water inlet is less than 55 ℃;
(4) The temperature of the OBC power tube is smaller than the temperature threshold To of the OBC power tube;
(5) The temperature of the DCDC power tube is smaller than a temperature threshold Td of the DCDC power tube;
when the Level is judged to be Level1, the above conditions need to be met simultaneously.
5. The control method of the all-in-one electric-driven cooling system according to claim 3, wherein the Level2 is determined by the following conditions:
(1) The motor controller works in a torque control state;
(2) The motor controller works in a non-torque control state, and the motor controller cannot normally receive the flow rate grade request of the cooling liquid of the OBC & DCDC integrated controller;
(3) The motor controller works in a non-torque control state, the temperature of a water inlet is greater than 55 ℃, or the temperature of the OBC power tube is greater than the temperature threshold To of the OBC power tube, or the temperature of the DCDC power tube is greater than the temperature threshold Td of the DCDC power tube;
when the Level is judged to be Level2, the above conditions need to satisfy any one.
6. The control method of the all-in-one electric-driven cooling system according to claim 3, wherein the Level3 is determined by the following conditions:
(1) The temperature of the driving motor is greater than a motor temperature threshold Tc;
(2) The motor controller temperature is greater than a motor controller temperature threshold Tm.
When the Level is judged to be Level3, the above conditions need to satisfy any one.
7. An all-in-one electric drive cooling system control system is used for realizing an all-in-one electric drive cooling system control method and is characterized by comprising an OBC & DCDC integrated controller, a motor controller, a driving motor and a whole vehicle controller; and the OBC & DCDC integrated controller and the driving motor are connected with the motor controller.
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| CN202210733207.4A CN115158003A (en) | 2022-06-27 | 2022-06-27 | Control method and control system of all-in-one electric-driven cooling system |
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| CN202210733207.4A CN115158003A (en) | 2022-06-27 | 2022-06-27 | Control method and control system of all-in-one electric-driven cooling system |
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