CN109398093B - Control method, system and device of electronic cooling fan and pure electric vehicle - Google Patents
Control method, system and device of electronic cooling fan and pure electric vehicle Download PDFInfo
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- CN109398093B CN109398093B CN201811495883.2A CN201811495883A CN109398093B CN 109398093 B CN109398093 B CN 109398093B CN 201811495883 A CN201811495883 A CN 201811495883A CN 109398093 B CN109398093 B CN 109398093B
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- 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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
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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
- B60K11/06—Arrangement in connection with cooling of propulsion units with air cooling
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- 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
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
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- 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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/425—Temperature
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- 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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/547—Voltage
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Control Of Electric Motors In General (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The application discloses a control method, a system and a device of an electronic cooling fan and a pure electric vehicle, comprising the following steps: when the DCDC fails, acquiring the current motor temperature, the current motor controller temperature and the current voltage of the low-voltage storage battery; judging whether the current voltage, the current motor temperature and the current motor controller temperature meet the stop operation conditions, and if so, controlling the electronic cooling fan to stop working; when the DCDC fault is relieved, acquiring the current motor temperature, the current motor controller temperature and the current voltage of the low-voltage storage battery; judging whether the current voltage, the current motor temperature and the current motor controller temperature meet the allowable running conditions, and if so, controlling the electronic cooling fan to work. The application takes the current voltage of the low-voltage storage battery as one of the start-stop conditions for controlling the electronic radiator fan, and can avoid the situation that the pure electric vehicle cannot be started secondarily due to the undervoltage of the low-voltage storage battery.
Description
Technical Field
The application relates to the field of pure electric vehicles, in particular to a control method, a control system and a control device of an electronic cooling fan and the pure electric vehicle.
Background
The driving motor of the pure electric vehicle and the inverter in the high-voltage controller can generate a large amount of heat in the use process, and the electronic cooling fan is required to be configured for cooling, so that the power of the matched electronic cooling fan is higher because the heat generated in the load operation of the pure electric vehicle is larger. In the pure electric vehicle, DCDC is responsible for low-voltage power supply and low-voltage storage battery charging of the whole vehicle, when the DCDC works normally, the electric energy source of the electronic cooling fan is guaranteed, but when the DCDC has a problem, the current situation of the pure electric vehicle is not suitable for waiting for rescue in situ, the pure electric vehicle is required to continue to run at the moment, the electric energy of the electronic cooling fan is taken to the low-voltage storage battery, and the low-voltage storage battery is easy to run due to the fact that the power of the electronic cooling fan is higher, so that the secondary starting of the pure electric vehicle is influenced.
Therefore, how to provide a solution to the above technical problem is a problem that a person skilled in the art needs to solve at present.
Disclosure of Invention
The application aims to provide a control method, a system and a device for an electronic cooling fan and a pure electric vehicle, wherein the current voltage of a low-voltage storage battery is used as one of the starting and stopping conditions for controlling the electronic cooling fan, so that the situation that the pure electric vehicle cannot be started secondarily due to the undervoltage of the low-voltage storage battery can be avoided.
In order to solve the above technical problems, the present application provides a control method of an electronic cooling fan, including:
when the DCDC fails, acquiring the current motor temperature, the current motor controller temperature and the current voltage of the low-voltage storage battery;
judging whether the current voltage, the current motor temperature and the current motor controller temperature meet the stop operation conditions, and if so, controlling the electronic cooling fan to stop working;
when the DCDC fault is relieved, acquiring the current motor temperature, the current motor controller temperature and the current voltage of the low-voltage storage battery;
judging whether the current voltage, the current motor temperature and the current motor controller temperature meet the allowable running conditions, and if so, controlling the electronic cooling fan to work.
Preferably, the step of judging whether the current voltage, the current motor temperature and the current motor controller temperature meet the stop operation condition or not, if yes, the step of controlling the electronic radiator fan to stop operation specifically comprises:
judging whether the current voltage is larger than a first voltage preset value or not;
if not, controlling the electronic cooling fan to stop working;
if so, when the current motor temperature is smaller than the first temperature preset value and the current motor temperature is smaller than the second temperature preset value, the electronic cooling fan is controlled to stop working.
Preferably, the step of judging whether the current voltage, the current motor temperature and the current motor controller temperature meet the allowable running conditions or not, if yes, the step of controlling the electronic radiator fan to work specifically comprises:
when the current voltage is larger than the second voltage preset value, the current motor temperature is larger than the third temperature preset value, and the current motor controller temperature is larger than the fourth temperature preset value, the electronic cooling fan is controlled to work.
Preferably, when the DCDC fails, after the current motor temperature, the current motor controller temperature and the current voltage of the low-voltage storage battery are obtained, before judging whether the current voltage, the current motor temperature and the current motor controller temperature meet the stop operation condition, the control method of the electronic radiator fan further includes:
judging whether the current voltage is smaller than a third voltage preset value or not, wherein the third voltage preset value is larger than the first voltage preset value;
if yes, generating under-voltage alarm information so that the instrument can send out an alarm after receiving the under-voltage alarm information.
In order to solve the above technical problems, the present application provides a control system of an electronic cooling fan, including:
the acquisition module is used for acquiring the current motor temperature, the current motor controller temperature and the current voltage of the low-voltage storage battery when the DCDC fails; the method is also used for acquiring the current motor temperature, the current motor controller temperature and the current voltage of the low-voltage storage battery when the DCDC fault is relieved;
the control module is used for judging whether the current voltage, the current motor temperature and the current motor controller temperature meet the stop operation conditions or not when the DCDC fails, and if so, controlling the electronic cooling fan to stop working; and the electronic cooling fan is also used for judging whether the current voltage, the current motor temperature and the current motor controller temperature meet the allowable running conditions or not when the DCDC fault is relieved, and if so, controlling the electronic cooling fan to work.
In order to solve the above technical problems, the present application provides a control device of an electronic cooling fan, including:
the whole vehicle controller is used for acquiring the current voltage of the low-voltage storage battery when the DCDC fails, and generating a first control signal when the current voltage is smaller than a first voltage preset value; the method is also used for acquiring the current voltage of the low-voltage storage battery when the DCDC fault is relieved, and generating a second control signal when the current voltage is larger than a second voltage preset value;
an electronic radiator fan motor, an electronic radiator fan controller;
the electronic radiator fan controller is used for acquiring the current motor temperature and the current motor controller temperature; and the electronic cooling fan motor is further used for controlling the electronic cooling fan motor to stop working when the first control signal is received or the current motor temperature and the current motor controller temperature meet the stop operation condition, and controlling the electronic cooling fan motor to work when the second control signal is received and the current motor temperature and the current motor controller temperature meet the allowable operation condition.
Preferably, the control device further includes:
the alarm module is used for sending out an alarm after receiving the alarm signal;
correspondingly, the vehicle controller is further configured to generate and send the alarm signal when the current voltage is smaller than a third voltage preset value, where the third voltage preset value is smaller than the second voltage preset value and larger than the first voltage preset value.
Preferably, the control device further comprises a CAN bus;
the whole vehicle controller sends the first control signal or the second control signal to the electronic radiator fan controller through the CAN bus;
and the whole vehicle controller sends the alarm signal to the alarm module through the CAN bus.
Preferably, the alarm module is an instrument arranged in a cab.
In order to solve the technical problems, the application also provides a pure electric vehicle, which comprises the control device of the electronic cooling fan.
The application provides a control method of an electronic cooling fan, which comprises the following steps: when the DCDC fails, acquiring the current motor temperature, the current motor controller temperature and the current voltage of the low-voltage storage battery; judging whether the current voltage, the current motor temperature and the current motor controller temperature meet the stop operation conditions, and if so, controlling the electronic cooling fan to stop working; when the DCDC fault is relieved, acquiring the current motor temperature, the current motor controller temperature and the current voltage of the low-voltage storage battery; judging whether the current voltage, the current motor temperature and the current motor controller temperature meet the allowable running conditions, and if so, controlling the electronic cooling fan to work.
Therefore, in practical application, by adopting the scheme of the application, when the DCDC fails and the low-voltage storage battery is in an under-voltage state, the electronic cooling fan is controlled to stop working, and after the DCDC is recovered to be normal and the current voltage of the low-voltage storage battery reaches a normal value, the electronic cooling fan is controlled to work, so that the situation that the pure electric vehicle cannot be started for the second time due to the under-voltage of the low-voltage storage battery is avoided.
The application also provides a control system and a control device of the electronic cooling fan and a pure electric vehicle, which have the same beneficial effects as the control method.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required in the prior art and the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flow chart of steps of a control method of an electronic cooling fan provided by the application;
fig. 2 is a schematic structural diagram of a control system of an electronic cooling fan according to the present application;
fig. 3 is a schematic structural diagram of a control device of an electronic heat dissipation fan according to the present application.
Detailed Description
The application provides a control method, a control system, a control device and a control device for an electronic cooling fan, and a pure electric vehicle, wherein the current voltage of a low-voltage storage battery is used as one of the start-stop conditions for controlling the electronic cooling fan, so that the situation that the pure electric vehicle cannot be started secondarily due to the undervoltage of the low-voltage storage battery can be avoided.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Referring to fig. 1, fig. 1 is a flowchart illustrating steps of a control method of an electronic cooling fan according to the present application, including:
step 1: when the DCDC fails, acquiring the current motor temperature, the current motor controller temperature and the current voltage of the low-voltage storage battery;
specifically, when DCDC fails, the electronic radiator fan needs to draw electricity from the low-voltage battery, the electric energy of the low-voltage battery is enough to start the electronic radiator fan initially, but the operation of the electronic radiator fan consumes the electric energy of the low-voltage battery, so that the electric energy of the low-voltage battery can drive the electric vehicle to start for the second time.
Step 2: judging whether the current voltage, the current motor temperature and the current motor controller temperature meet the stop operation conditions, and if so, controlling the electronic cooling fan to stop working;
it can be understood that when the current voltage of the low-voltage storage battery meets the allowable working condition of the electronic radiator fan, if the current motor temperature and the current motor controller temperature increase to the respective corresponding temperature preset values, the electronic radiator fan can normally radiate heat, and the stopping operation condition can be considered to be that, specifically, when the current voltage meets the allowable working voltage of the electronic radiator fan, and the current motor temperature is reduced to the first temperature preset value and the current motor controller temperature is reduced to the second temperature preset value along with the operation of the electronic radiator fan, at this time, the electronic radiator fan is controlled to stop working; of course, in order to ensure that the low-voltage battery can drive the electric vehicle to start for a second time, the stopping condition may specifically be that the current voltage of the low-voltage battery is less than or equal to a first voltage preset value, at which time the electronic radiator fan is controlled to stop working, where the first voltage preset value may be regarded as a voltage limit value for prohibiting the electronic radiator fan from working, and in consideration of the possibility of acquisition errors, the stopping condition may also specifically be that the electronic radiator fan is controlled to stop working after the current voltage of the low-voltage battery is less than or equal to the first voltage preset value for a certain time. Compared with the prior art that the start/stop of the electronic cooling fan is determined only by the current motor temperature and the current motor controller temperature, the application takes the current voltage of the low-voltage storage battery as a condition for controlling the start/stop of the electronic cooling fan, and can avoid the excessive consumption of the electric energy of the low-voltage storage battery by the electronic cooling fan, thereby ensuring that the electric energy of the low-voltage storage battery can drive the electric vehicle to start for the second time.
Step 3: when the DCDC fault is relieved, acquiring the current motor temperature, the current motor controller temperature and the current voltage of the low-voltage storage battery;
step 4: judging whether the current voltage, the current motor temperature and the current motor controller temperature meet the allowable running conditions, and if so, controlling the electronic cooling fan to work.
Specifically, when the DCDC fault is relieved, the DCDC supplements power to the low-voltage battery, and it can be understood that the running condition is that the current voltage of the low-voltage battery reaches the voltage limit value for allowing the electronic radiator fan to work for a certain time (i.e., the second voltage preset value is greater than the first voltage preset value), and when the current motor temperature rises to the third temperature preset value and the temperature of the current motor controller rises to the fourth temperature preset value, the electronic radiator fan is controlled to work at the moment. The first temperature preset value is smaller than the third temperature preset value, and the second temperature preset value is smaller than the fourth temperature preset value. The application prevents the problem that the pure electric vehicle cannot be started secondarily caused by the undervoltage of the low-voltage storage battery by setting the undervoltage protection for the electronic cooling fan.
The application provides a control method of an electronic cooling fan, which comprises the following steps: when the DCDC fails, acquiring the current motor temperature, the current motor controller temperature and the current voltage of the low-voltage storage battery; judging whether the current voltage, the current motor temperature and the current motor controller temperature meet the stop operation conditions, and if so, controlling the electronic cooling fan to stop working; when the DCDC fault is relieved, acquiring the current motor temperature, the current motor controller temperature and the current voltage of the low-voltage storage battery; judging whether the current voltage, the current motor temperature and the current motor controller temperature meet the allowable running conditions, and if so, controlling the electronic cooling fan to work.
Therefore, in practical application, by adopting the scheme of the application, when the DCDC fails and the low-voltage storage battery is in an under-voltage state, the electronic cooling fan is controlled to stop working, and after the DCDC is recovered to be normal and the current voltage of the low-voltage storage battery reaches a normal value, the electronic cooling fan is controlled to work, so that the situation that the pure electric vehicle cannot be started for the second time due to the under-voltage of the low-voltage storage battery is avoided.
Based on the above embodiments:
as a preferred embodiment, when DCDC fails, after acquiring the current motor temperature, the current motor controller temperature and the current voltage of the low-voltage battery, the control method of the electronic radiator fan further includes:
judging whether the current voltage is smaller than a third voltage preset value or not, wherein the third voltage preset value is larger than the first voltage preset value;
if yes, generating under-voltage alarm information so that the instrument can send out an alarm after receiving the under-voltage alarm information.
Specifically, when the current voltage of the low-voltage storage battery is smaller than or equal to the third voltage preset value for a certain period of time, the current voltage storage battery is in an under-voltage state, the third voltage preset value is larger than the first voltage preset value, a pure electric vehicle with a low-voltage platform of 24V is taken as an example, the third voltage preset value can be set to 24V, the first voltage preset value can be set to 23.5V, it is understood that the first voltage preset value is a voltage limit value for prohibiting the operation of the electronic radiator fan, and the electronic radiator fan can normally operate when the current voltage is between the third voltage preset value and the first voltage preset value, but the electric energy of the low-voltage storage battery is relatively low at this time, and sound and light alarm information is generated and sent so that the instrument can send out sound and light alarm after receiving the under-voltage alarm information, and remind a driver that the low-voltage storage battery is in the under-voltage state and needs to be stopped for checking, thereby improving the reliability and safety of the application.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a control system of an electronic cooling fan according to the present application, including:
the acquisition module 01 is used for acquiring the current motor temperature, the current motor controller temperature and the current voltage of the low-voltage storage battery when the DCDC fails; the method is also used for acquiring the current motor temperature, the current motor controller temperature and the current voltage of the low-voltage storage battery when the DCDC fault is relieved;
the control module 02 is used for judging whether the current voltage, the current motor temperature and the current motor controller temperature meet the stop operation conditions or not when the DCDC fails, and if so, controlling the electronic cooling fan to stop working; and the electronic cooling fan is also used for judging whether the current voltage, the current motor temperature and the current motor controller temperature meet the allowable running conditions or not when the DCDC fault is relieved, and if so, controlling the electronic cooling fan to work.
As a preferred embodiment, whether the current voltage, the current motor temperature and the current motor controller temperature meet the stop operation condition is judged, if yes, the process of controlling the electronic radiator fan to stop operation is specifically as follows:
judging whether the current voltage is larger than a first voltage preset value or not;
if not, controlling the electronic cooling fan to stop working;
if yes, when the current motor temperature is smaller than the first temperature preset value and the current motor temperature is smaller than the second temperature preset value, the electronic cooling fan is controlled to stop working.
As a preferred embodiment, whether the current voltage, the current motor temperature and the current motor controller temperature meet the allowable running conditions is judged, if yes, the process of controlling the electronic radiator fan to work is specifically as follows:
when the current voltage is larger than the second voltage preset value, the current motor temperature is larger than the third temperature preset value, and the current motor controller temperature is larger than the fourth temperature preset value, the electronic cooling fan is controlled to work.
As a preferred embodiment, the control module 02 is further configured to determine, when the DCDC fails, whether the current voltage is less than a third voltage preset value, and if yes, generate the under-voltage alarm information, where the third voltage preset value is greater than the first voltage preset value;
the control system of the electronic cooling fan further comprises:
and the instrument is used for sending out an alarm after receiving the undervoltage alarm information.
The control system of the electronic cooling fan has the same beneficial effects as the control method.
For an introduction of the control system for an electronic cooling fan provided by the present application, refer to the above embodiment, and the disclosure is not repeated here.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a control device of an electronic cooling fan according to the present application, including:
the vehicle controller 1 is configured to obtain a current voltage of the low-voltage battery when the DCDC fails, and generate a first control signal when the current voltage is less than a first voltage preset value; the method is also used for acquiring the current voltage of the low-voltage storage battery when the DCDC fault is relieved, and generating a second control signal when the current voltage is larger than a second voltage preset value;
an electronic radiator fan motor M, an electronic radiator fan controller 2;
an electronic radiator fan controller 2 for acquiring a current motor temperature and a current motor controller temperature; and the electronic cooling fan motor M is further used for controlling the electronic cooling fan motor M to stop working when the first control signal is received or the current motor temperature and the current motor controller temperature meet the stop operation condition, and controlling the electronic cooling fan motor M to work when the second control signal is received and the current motor temperature and the current motor controller temperature meet the allowable operation condition.
As a preferred embodiment, the control device further comprises:
an alarm module 3, configured to send out an alarm after receiving the alarm signal;
correspondingly, the vehicle controller 1 is further configured to generate and send a warning signal when the current voltage is smaller than a third voltage preset value, where the third voltage preset value is smaller than the second voltage preset value and larger than the first voltage preset value.
As a preferred embodiment, the control device further comprises a CAN bus;
the vehicle controller 1 sends a first control signal or a second control signal to the electronic radiator fan controller 2 through the CAN bus;
the whole vehicle controller 1 sends an alarm signal to the alarm module 3 through the CAN bus.
As a preferred embodiment, the alarm module 3 is an instrument provided in the cab.
Specifically, the whole vehicle controller 1 (VCU) of the pure electric vehicle is connected with the electronic radiator fan controller 2 through the CAN bus to perform information interaction, and the electronic radiator fan is started and stopped, except that the current motor temperature and the current motor controller temperature are considered, and is controlled by the VCU. The VCU acquires the current voltage of the low-voltage storage battery in real time, when the current voltage is continuously lower than a third voltage preset value (the low-voltage platform is a 24V pure electric vehicle, the third voltage preset value CAN be set to be 24V, the low-voltage platform is a 12V pure electric vehicle, the third voltage preset value CAN be set to be 12V), the VCU sends an alarm signal to the alarm module 3 through the CAN bus, the alarm module 3 CAN be a meter of a cab, and the meter carries out acousto-optic alarm after receiving the alarm signal; when the VCU detects that the current voltage of the low-voltage battery is continuously lower than a first voltage preset value (the low-voltage platform is a 24V pure electric vehicle, the first voltage preset value CAN be set to be 23.5V, the voltage platform is a 12V pure electric vehicle, the first voltage preset value CAN be set to be 11.6V), the VCU continues to send an alarm signal to the meter, and sends a signal (namely a first control signal) for prohibiting the electronic radiator fan to work to the electronic radiator fan controller 2 through the CAN bus, and the electronic radiator fan controller 2 controls the electronic radiator fan motor M to stop working after receiving the first control signal. When the DCDC fault is relieved and the vehicle low-voltage power supply system is restored to normal, and the VCU detects that the current voltage of the low-voltage storage battery is continuously higher than a second preset value (the second preset value CAN be set to 24.5V for a 24V-low-voltage platform-type pure electric vehicle and the second preset value CAN be set to 12.5V for a 12V-voltage platform-type pure electric vehicle), the VCU sends a signal (i.e., a second control signal) allowing the electronic radiator fan to work to the electronic radiator fan controller 2 through the CAN bus, and the electronic radiator fan controller 2 controls the electronic radiator fan motor M to work after receiving the second control signal and when the current motor temperature and the current motor controller temperature meet the allowable running conditions.
The control device of the electronic cooling fan has the same beneficial effects as the control method.
Correspondingly, the application also provides a control device of the electronic cooling fan of the pure electric vehicle.
The pure electric vehicle provided by the application has the same beneficial effects as the control method.
For an introduction to the control device for a pure electric vehicle provided by the present application, reference is made to the above embodiment, and the description of the present application is omitted herein.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A control method of an electronic heat dissipation fan, comprising:
when the DCDC fails, acquiring the current motor temperature, the current motor controller temperature and the current voltage of the low-voltage storage battery;
judging whether the current voltage, the current motor temperature and the current motor controller temperature meet the stop operation conditions, and if so, controlling the electronic cooling fan to stop working;
when the DCDC fault is relieved, acquiring the current motor temperature, the current motor controller temperature and the current voltage of the low-voltage storage battery;
judging whether the current voltage, the current motor temperature and the current motor controller temperature meet the allowable running conditions, and if so, controlling the electronic cooling fan to work.
2. The method for controlling an electronic heat dissipation fan according to claim 1, wherein the determining whether the current voltage, the current motor temperature, and the current motor controller temperature satisfy the stop operation condition, if so, the process of controlling the electronic heat dissipation fan to stop operation specifically includes:
judging whether the current voltage is larger than a first voltage preset value or not;
if not, controlling the electronic cooling fan to stop working;
if so, when the current motor temperature is smaller than the first temperature preset value and the current motor temperature is smaller than the second temperature preset value, the electronic cooling fan is controlled to stop working.
3. The method for controlling an electronic heat dissipation fan according to claim 1, wherein the determining whether the current voltage, the current motor temperature, and the current motor controller temperature satisfy the allowable operation conditions, if so, the process of controlling the electronic heat dissipation fan comprises:
when the current voltage is larger than the second voltage preset value, the current motor temperature is larger than the third temperature preset value, and the current motor controller temperature is larger than the fourth temperature preset value, the electronic cooling fan is controlled to work.
4. The method for controlling an electronic cooling fan according to claim 2, wherein when the DCDC fails, after acquiring the current motor temperature, the current motor controller temperature, and the current voltage of the low-voltage battery, the method further comprises, before determining whether the current voltage, the current motor temperature, and the current motor controller temperature satisfy the stop operation condition:
judging whether the current voltage is smaller than a third voltage preset value or not, wherein the third voltage preset value is larger than the first voltage preset value;
if yes, generating under-voltage alarm information so that the instrument can send out an alarm after receiving the under-voltage alarm information.
5. A control system of an electronic cooling fan, comprising:
the acquisition module is used for acquiring the current motor temperature, the current motor controller temperature and the current voltage of the low-voltage storage battery when the DCDC fails; the method is also used for acquiring the current motor temperature, the current motor controller temperature and the current voltage of the low-voltage storage battery when the DCDC fault is relieved;
the control module is used for judging whether the current voltage, the current motor temperature and the current motor controller temperature meet the stop operation conditions or not when the DCDC fails, and if so, controlling the electronic cooling fan to stop working; and the electronic cooling fan is also used for judging whether the current voltage, the current motor temperature and the current motor controller temperature meet the allowable running conditions or not when the DCDC fault is relieved, and if so, controlling the electronic cooling fan to work.
6. A control device of an electronic heat radiation fan, comprising:
the whole vehicle controller is used for acquiring the current voltage of the low-voltage storage battery when the DCDC fails, and generating a first control signal when the current voltage is smaller than a first voltage preset value; the method is also used for acquiring the current voltage of the low-voltage storage battery when the DCDC fault is relieved, and generating a second control signal when the current voltage is larger than a second voltage preset value;
an electronic radiator fan motor, an electronic radiator fan controller;
the electronic radiator fan controller is used for acquiring the current motor temperature and the current motor controller temperature; and the electronic cooling fan motor is further used for controlling the electronic cooling fan motor to stop working when the first control signal is received or the current motor temperature and the current motor controller temperature meet the stop operation condition, and controlling the electronic cooling fan motor to work when the second control signal is received and the current motor temperature and the current motor controller temperature meet the allowable operation condition.
7. The control device of an electronic heat radiation fan according to claim 6, characterized in that the control device further comprises:
the alarm module is used for sending out an alarm after receiving the alarm signal;
correspondingly, the vehicle controller is further configured to generate and send the alarm signal when the current voltage is smaller than a third voltage preset value, where the third voltage preset value is smaller than the second voltage preset value and larger than the first voltage preset value.
8. The control device of an electronic heat dissipation fan according to claim 7, further comprising a CAN bus;
the whole vehicle controller sends the first control signal or the second control signal to the electronic radiator fan controller through the CAN bus;
and the whole vehicle controller sends the alarm signal to the alarm module through the CAN bus.
9. The control device of an electronic radiator fan according to claim 8, wherein the alarm module is an instrument provided in a cab.
10. A pure electric vehicle characterized by comprising a control device of an electronic radiator fan according to any one of claims 6-9.
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| CN110107997B (en) * | 2019-05-28 | 2021-05-25 | 芜湖美智空调设备有限公司 | Control method and device of air conditioner and air conditioner |
| CN111267619B (en) * | 2020-02-29 | 2023-07-25 | 北汽重型汽车有限公司 | New energy automobile cooling fan control method |
| CN113492677B (en) * | 2020-04-01 | 2022-09-13 | 长城汽车股份有限公司 | Electric automobile emergency method and electric automobile |
| CN111976645B (en) * | 2020-08-31 | 2022-04-19 | 立胜汽车科技(苏州)有限公司 | Control method and device of electronic steering column lock |
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