CN109606088B - Cooling system, control method thereof and vehicle - Google Patents

Cooling system, control method thereof and vehicle Download PDF

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Publication number
CN109606088B
CN109606088B CN201910034246.3A CN201910034246A CN109606088B CN 109606088 B CN109606088 B CN 109606088B CN 201910034246 A CN201910034246 A CN 201910034246A CN 109606088 B CN109606088 B CN 109606088B
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temperature
cooling system
motor
preset
electromagnetic valve
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CN109606088A (en
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冀红超
刘伯庚
朱金龙
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BAIC Motor Co Ltd
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BAIC Motor Co Ltd
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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
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
    • B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
    • B60H1/00392—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell for electric vehicles having only electric drive means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/02—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
    • B60H1/04—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant from cooling liquid of the plant
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • 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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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention provides a cooling system, a control method thereof and a vehicle, wherein the system comprises: the system comprises an electronic water pump, a driving motor, an air conditioner warm air switch, an air conditioner, an electronic fan, an indoor radiator, an outdoor radiator, a first electromagnetic valve, a second electromagnetic valve, an acquisition module and a control module, wherein the acquisition module is used for acquiring the motor temperature, the motor rotating speed and the cab temperature of the driving motor when the driving motor runs; and the control module is used for correspondingly controlling one or more of the electronic water pump, the air conditioner warm air switch, the air conditioner, the electronic fan, the first electromagnetic valve and the second electromagnetic valve according to the motor temperature, the motor rotating speed and the cab temperature so as to control the waterway circulation mode of the cooling system. The invention controls the circulation of cooling water through the electromagnetic valve in the electronic water pump, can provide heat for a cab to warm, avoids energy waste, and can automatically control the opening and closing of the electronic water pump according to the water temperature, thereby saving electric energy.

Description

Cooling system, control method thereof and vehicle
Technical Field
The invention relates to the technical field of vehicles, in particular to a cooling system, a control method of the cooling system and a vehicle.
Background
When the motor of the electric automobile runs, a cooling system is needed to cool the motor, so that the temperature of the motor is kept at a proper temperature. For cooling of the motor, a water cooling system is generally adopted for cooling at present, and heat is dissipated to the atmosphere.
However, the cooling system for the motor cannot cool according to the requirement of the system, and at the same time, the heat generated by the motor cannot be effectively utilized, thereby causing waste of energy.
Disclosure of Invention
The present invention is directed to solving at least one of the above problems.
Therefore, an object of the present invention is to provide a cooling system, which can supply heat to a cab for heating by controlling the circulation of cooling water through an electromagnetic valve in an electronic water pump, thereby avoiding energy waste, and automatically controlling the electronic water pump to be turned on and off according to the temperature of water, thereby saving electric energy.
In order to achieve the above object, an embodiment of the present invention proposes a cooling system including: the system comprises an electronic water pump, a driving motor, an air conditioner warm air switch, an air conditioner, an electronic fan, an indoor radiator, an outdoor radiator, a first electromagnetic valve arranged between the outdoor radiator and the electronic water pump, a second electromagnetic valve arranged between the indoor radiator and the electronic water pump, an acquisition module and a control module, wherein the acquisition module is used for acquiring the temperature of the motor, the rotating speed of the motor and the temperature of a cab when the driving motor runs; and the control module is used for correspondingly controlling one or more of the electronic water pump, the air conditioner warm air switch, the air conditioner, the electronic fan, the first electromagnetic valve and the second electromagnetic valve according to the motor temperature, the motor rotating speed and the cab temperature so as to control the waterway circulation mode of the cooling system.
According to the cooling system provided by the embodiment of the invention, when the driving motor runs, the motor temperature, the motor rotating speed and the cab temperature are acquired, one or more of the electronic water pump, the air conditioner warm air switch, the air conditioner, the electronic fan, the first electromagnetic valve and the second electromagnetic valve are correspondingly controlled according to the motor temperature, the motor rotating speed and the cab temperature so as to control the water path circulation mode of the cooling system, and then the electromagnetic valve in the electronic water pump is used for controlling the cooling water circulation, so that heat can be provided for the cab for warming, the energy waste is avoided, and the electronic water pump can be automatically controlled to be turned on and off according to the water temperature, and the electric energy is saved.
In addition, the cooling system according to the above embodiment of the present invention may further have the following additional technical features:
in some examples, the water circuit circulation mode of the cooling system includes an inner circulation mode and an outer circulation mode, and the control module is configured to: judging whether the temperature of the cab is lower than a preset indoor heat dissipation circulation starting temperature or not and whether the air conditioner warm air switch is started or not; if so, controlling the electronic water pump to be opened, the first electromagnetic valve to be closed and the second electromagnetic valve to be opened so as to enable the cooling system to enter the internal circulation mode.
In some examples, after the cooling system enters the internal circulation mode, the control module is further configured to: judging whether the duration time of the cab temperature being less than the preset indoor heat dissipation cycle starting temperature reaches the preset time or not; and if so, controlling the air conditioner to be started.
In some examples, the control module is further to: determining whether the cooling system exits the internal circulation mode; if so, judging whether the motor temperature is higher than a first preset temperature or whether the motor rotating speed is higher than a first preset rotating speed; and if the temperature of the motor is higher than a first preset temperature or the rotating speed of the motor is higher than a first preset rotating speed, controlling the electronic water pump to be started, the first electromagnetic valve to be opened and the second electromagnetic valve to be closed so as to enable the cooling system to enter the external circulation mode.
In some examples, the control module is further to: and when the temperature of the motor is judged to be less than or equal to a first preset temperature or the rotating speed of the motor is judged to be less than or equal to a first preset rotating speed, the electronic water pump is controlled to be closed, the first electromagnetic valve is controlled to be closed, and the second electromagnetic valve is controlled to be closed, so that the cooling system exits the external circulation mode.
In some examples, the control module is further to: when the cooling system is judged not to exit the internal circulation mode, judging whether the temperature of the motor is higher than a first preset temperature or not and whether the rotating speed of the motor is higher than a first preset rotating speed or not; if so, controlling the first electromagnetic valve to be opened so as to enable the cooling system to enter the external circulation mode.
In some examples, the obtaining module is further configured to: respectively acquiring the water inlet temperature and the water outlet temperature of the outdoor radiator; the control module is further used for controlling the electronic fan to operate at a speed lower than a second preset rotating speed when the temperature of the water inlet is higher than a second preset temperature or the temperature of the water outlet is higher than a third preset temperature; when the temperature of the water inlet is higher than the second preset temperature and the temperature of the water outlet is higher than the third preset temperature, controlling the electronic fan to operate at a speed higher than a second preset rotating speed; and when the temperature of the water inlet is lower than the second preset temperature and the temperature of the water outlet is lower than the third preset temperature, or the first electromagnetic valve is closed, controlling the electronic fan to stop.
In some examples, the control module is further to: and when the temperature of the cab is higher than the preset indoor heat dissipation circulation closing temperature, controlling the air conditioner warm air switch to be closed, and quitting the internal circulation mode.
In order to achieve the above object, an embodiment of the second aspect of the present invention further provides a control method of the cooling system according to the above embodiment of the first aspect of the present invention, including the steps of: when the driving motor runs, acquiring the temperature of the motor, the rotating speed of the motor and the temperature of a cab; and correspondingly controlling one or more of an electronic water pump, an air-conditioning warm air switch, an air conditioner, an electronic fan, a first electromagnetic valve and a second electromagnetic valve in the cooling system according to the motor temperature, the motor speed and the cab temperature so as to control the waterway circulation mode of the cooling system.
According to the control method of the cooling system, when the driving motor operates, the motor temperature, the motor rotating speed and the cab temperature are obtained, one or more of the electronic water pump, the air conditioner warm air switch, the air conditioner, the electronic fan, the first electromagnetic valve and the second electromagnetic valve are correspondingly controlled according to the motor temperature, the motor rotating speed and the cab temperature, so that the water path circulation mode of the cooling system is controlled, cooling water circulation is controlled through the electromagnetic valves in the electronic water pump, heat can be provided for the cab to be warmed, energy waste is avoided, and the electronic water pump can be automatically controlled to be turned on and turned off according to the water temperature, so that electric energy is saved.
In order to achieve the above object, an embodiment of the third aspect of the present invention further provides a vehicle including the cooling system according to the embodiment of the first aspect of the present invention.
According to the vehicle provided by the embodiment of the invention, heat can be provided for a cab to warm, energy waste is avoided, and the electronic water pump can be automatically controlled to be turned on and off according to the water temperature, so that electric energy is saved.
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 schematic structural view of a cooling system according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating the control of the cooling system to enter the internal circulation mode according to one embodiment of the present invention;
FIG. 3 is a schematic flow chart illustrating the control of the cooling system to enter the external circulation mode according to an embodiment of the present invention.
Fig. 4 is a flowchart of a control method of a cooling system according to an embodiment of the present invention.
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.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The cooling system, the control method thereof and the vehicle according to the embodiment of the invention are described below with reference to the accompanying drawings.
Fig. 1 is a schematic configuration diagram of a cooling system according to an embodiment of the present invention. As shown in fig. 1, the cooling system includes: the system comprises an electronic water pump 2, a driving motor 1, an air conditioner warm air switch 3, an air conditioner (not shown in the figure), an electronic fan 7, an indoor radiator 11, an outdoor radiator 8, a first electromagnetic valve 4 arranged between the outdoor radiator 8 and the electronic water pump 2, a second electromagnetic valve 12 arranged between the indoor radiator 11 and the electronic water pump 2, an acquisition module (not shown in the figure) and a control module (not shown in the figure). Specifically, the acquisition module may include various sensors, such as a temperature sensor, a rotation speed sensor, and the like, for example, the first water temperature sensor 5 and the second water temperature sensor 9 shown in fig. 1, and the like. The control module may include a control unit corresponding to a plurality of elements in the cooling system, such as the electronic fan control unit 6, the electronic water pump control unit 10, and the like shown in fig. 1. The obtaining module is used for obtaining the motor temperature, the motor rotating speed and the cab temperature of the driving motor 1 when the driving motor 1 runs.
The motor temperature can be recorded as T4, the motor speed can be recorded as n, and the cab temperature can be recorded as T1. In a specific implementation, the obtaining module at least includes: a motor temperature sensor for detecting the temperature of the motor, a cab temperature sensor for detecting the temperature of the cab, and a rotational speed sensor for detecting the rotational speed of the motor.
The control module is used for correspondingly controlling one or more of the electronic water pump 2, the air-conditioning warm air switch 3, the air conditioner, the electronic fan 7, the first electromagnetic valve 4 and the second electromagnetic valve 12 according to the motor temperature, the motor rotating speed and the cab temperature so as to control the water path circulation mode of the cooling system.
That is, the electronic water pump 2 and one or more of the air-conditioning warm air switch 3, the electronic fan 7, the first electromagnetic valve 4 and the second electromagnetic valve 12 in the cooling system are controlled according to the acquired motor temperature T4, the acquired motor speed n and the acquired cab temperature T1 of the driving motor 1, for example, the on/off or the connection/disconnection of these components is controlled, so as to control the water circuit circulation mode of the cooling system. The water circuit circulation mode includes, for example, an internal circulation mode (i.e., an indoor heat dissipation cycle) and an external circulation mode (an outdoor heat dissipation cycle), that is, the cooling system is controlled to be turned on/off in the internal circulation mode or the external circulation mode.
Specifically, in one embodiment of the present invention, as shown in fig. 2, the control module is configured to: and judging whether the cab temperature T1 is less than a preset indoor heat dissipation circulation opening temperature T2 or not and whether the air-conditioning warm air switch 3 is opened or not, if so, namely the cab temperature T1 is less than the preset indoor heat dissipation circulation opening temperature T2 and the air-conditioning warm air switch 3 is opened, controlling the electronic water pump 2 to be opened, the first electromagnetic valve 4 to be closed and the second electromagnetic valve 12 to be opened so as to enable the cooling system to enter an internal circulation mode and open the indoor heat dissipation circulation at the moment. Wherein, under the inner loop mode, the cooling water route gives off the heat to the driver's cabin through indoor radiator 11 to get warm to the driver's cabin, thereby avoid the energy extravagant. On the other hand, when the cab temperature T1 is greater than or equal to the preset indoor heat dissipation cycle on temperature T2 or the air conditioner heater switch 3 is not turned on, the internal circulation mode is not entered, i.e., the indoor heat dissipation cycle is not turned on.
It should be noted that the preset indoor heat dissipation cycle starting temperature T2 is a preset value, and a value thereof can be adjusted and set according to actual requirements, and when the cab temperature T1 is less than the indoor heat dissipation cycle starting temperature T2 and the air conditioner heater switch 3 is turned on, the indoor heat dissipation cycle can be started.
Further, as shown in connection with fig. 2, after the cooling system enters the internal circulation mode, the control module is further configured to: judging whether the duration time of the cab temperature T1 being less than the preset indoor heat dissipation cycle starting temperature T2 reaches a preset time (for example, 5 minutes); if so, controlling the air conditioner to be started, otherwise, not starting the air conditioner.
In an embodiment of the present invention, as shown in fig. 3, the control module is further configured to: judging whether the cooling system exits the internal circulation mode, namely judging whether the indoor heat dissipation circulation is closed; if so, judging whether the motor temperature T4 is greater than a first preset temperature T0 or whether the motor speed N is greater than a first preset speed N1; if the motor temperature T4 is greater than the first preset temperature T0 or the motor speed N is greater than the first preset speed N1, the electronic water pump 2 is controlled to be opened, the first electromagnetic valve 4 is controlled to be opened, and the second electromagnetic valve 12 is controlled to be closed, so that the cooling system enters an external circulation mode, namely, an outdoor heat dissipation circulation is opened. In the external circulation mode, the cooling water path radiates heat to the atmosphere through the outdoor radiator 8.
Further, as shown in fig. 3, the control module is further configured to: when the motor temperature T4 is judged to be less than or equal to the first preset temperature T0 or the motor speed N is judged to be less than or equal to the first preset speed N1, the electronic water pump 2 is controlled to be closed, the first electromagnetic valve 4 is controlled to be closed, and the second electromagnetic valve 12 is controlled to be closed, so that the cooling system exits the external circulation mode, namely the outdoor heat dissipation circulation is closed.
Further, as shown in fig. 3, the control module is further configured to: when the cooling system is judged not to exit the internal circulation mode, judging whether the motor temperature T4 is greater than a first preset temperature T0 and whether the motor speed N is greater than a first preset speed N1; if so, controlling the first electromagnetic valve 4 to be opened so as to enable the cooling system to enter an external circulation mode, namely, the outdoor heat dissipation circulation is opened, otherwise, judging that the motor temperature T4 is not greater than the first preset temperature T0 and the motor speed N is not greater than the first preset speed N1, not entering the external circulation mode, and not opening the outdoor heat dissipation circulation.
In an embodiment of the present invention, the obtaining module is further configured to: respectively acquiring the water inlet temperature t10 and the water outlet temperature t20 of the outdoor radiator 8; when the water inlet temperature T10 is higher than the second preset temperature T30 or the water outlet temperature T20 is higher than the third preset temperature T40(T10 is more than T30 or T20 is more than T40), controlling the electronic fan 7 to operate at a speed lower than the second preset rotating speed N2; when the water inlet temperature T10 is higher than the second preset temperature T30 and the water outlet temperature T20 is higher than the third preset temperature T40 (i.e. T10 is more than T30 and T20 is more than T40), controlling the electronic fan 7 to operate at a speed higher than the second preset rotating speed N2; when the water inlet temperature T10 is lower than the second preset temperature T30 and the water outlet temperature T20 is lower than the third preset temperature T40 (i.e. T10 < T30 and T20 < T40), or the first electromagnetic valve 4 is closed, the electronic fan 7 is controlled to be stopped, i.e. not operated. Wherein, as shown in fig. 1, the obtaining module may include a first water temperature sensor 5 and a second water temperature sensor 9 disposed at the water inlet and the water outlet of the outdoor heat sink 8 to obtain the water inlet temperature t10 and the water outlet temperature t20 of the outdoor heat sink 8, respectively. The above second preset rotation speed N2 may be set as follows: when the rotation speed of the electronic fan 7 is lower than the second predetermined rotation speed N2, it indicates that the electronic fan 7 is operating at a medium/low speed, and when the rotation speed of the electronic fan 7 is higher than the second predetermined rotation speed N2, it indicates that the electronic fan 7 is operating at a high speed.
Further, in an embodiment of the present invention, the control module is further configured to: and when the cab temperature T1 is greater than the preset indoor heat dissipation circulation closing temperature T3, controlling the air-conditioning warm air switch 3 to close and exiting the internal circulation mode. It should be noted that the preset indoor heat dissipation cycle closing temperature T3 is preset, and the value thereof can be adjusted and set according to the actual requirement, and when the cab temperature T1 is greater than T3, the indoor heat dissipation cycle can be closed and the air-conditioning heater switch 3 can be requested to be closed.
Further, in an embodiment of the present invention, the control module is further configured to: and when receiving a heat dissipation circulation exiting instruction input by a driver, controlling the cooling system to forcibly exit the internal circulation mode or the external circulation mode according to the heat dissipation circulation exiting instruction. In other words, when the driver inputs an instruction to turn off the indoor heat dissipation cycle or turn off the outdoor heat dissipation cycle through, for example, a button or a switch, the driver preferentially responds to the instruction to forcibly turn off the indoor heat dissipation cycle or turn off the outdoor heat dissipation cycle, that is, forcibly exit the internal circulation mode or the external circulation mode. That is, the driver can manually turn off the above-mentioned automatic indoor or outdoor circulation heat dissipation function through a switch button or the like, and then preferentially execute according to the intention of the driver, so as to meet the requirements of the driver in real time.
According to the cooling system provided by the embodiment of the invention, when the driving motor runs, the motor temperature, the motor rotating speed and the cab temperature are acquired, one or more of the electronic water pump air conditioner warm air switch, the air conditioner, the electronic fan, the first electromagnetic valve and the second electromagnetic valve are correspondingly controlled according to the motor temperature, the motor rotating speed and the cab temperature so as to control the water path circulation mode of the cooling system, and then the electromagnetic valve in the electronic water pump is used for controlling the cooling water circulation, so that heat can be provided for the cab for warming, the energy waste is avoided, and the electronic water pump can be automatically controlled to be turned on and off according to the water temperature, and the electric energy is saved.
A further embodiment of the present invention also provides a control method of a cooling system, wherein the electric steam cooling system is the cooling system described in any one of the above embodiments of the present invention, that is, the cooling system includes: the electronic water pump, the driving motor, the air conditioner warm air switch, the air conditioner, the electronic fan, the indoor radiator, the outdoor radiator, a first electromagnetic valve arranged between the outdoor radiator and the electronic water pump, a second electromagnetic valve arranged between the indoor radiator and the electronic water pump, an acquisition module and a control module.
Fig. 4 is a flowchart of a control method of a cooling system according to an embodiment of the present invention. As shown in fig. 4, the control method of the cooling system includes the steps of:
step S1: when the driving motor runs, the motor temperature, the motor speed and the cab temperature of the driving motor are acquired. The motor temperature can be recorded as T4, the motor speed can be recorded as n, and the cab temperature can be recorded as T1.
Step S2: and correspondingly controlling one or more of the electronic water pump, the air conditioner warm air switch, the air conditioner, the electronic fan, the first electromagnetic valve and the second electromagnetic valve according to the motor temperature, the motor rotating speed and the cab temperature so as to control the waterway circulation mode of the cooling system.
That is, one or more of an electronic water pump, an air-conditioning heater switch, an electronic fan, a first electromagnetic valve and a second electromagnetic valve in the cooling system are controlled according to the acquired motor temperature T4, the acquired motor speed n and the acquired cab temperature T1 of the driving motor, for example, the electronic water pump, the air-conditioning heater switch, the electronic fan, the first electromagnetic valve and the second electromagnetic valve are controlled to be opened/closed or connected/disconnected, and therefore the control of the water path circulation mode of the cooling system is achieved. The water circuit circulation mode includes, for example, an internal circulation mode (i.e., an indoor heat dissipation cycle) and an external circulation mode (an outdoor heat dissipation cycle), that is, the cooling system is controlled to be turned on/off in the internal circulation mode or the external circulation mode.
Specifically, in one embodiment of the present invention, step S2 further includes: and judging whether the cab temperature T1 is less than a preset indoor heat dissipation circulation starting temperature T2 or not and whether the air conditioner warm air switch is opened or not, if so, namely the cab temperature T1 is less than the preset indoor heat dissipation circulation starting temperature T2 and the air conditioner warm air switch is opened, controlling the electronic water pump to be opened, the first electromagnetic valve to be closed and the second electromagnetic valve to be opened so as to enable the cooling system to enter an internal circulation mode and start indoor heat dissipation circulation at the moment. Wherein, under the inner loop mode, the cooling water route gives off the heat to the driver's cabin through indoor radiator to get warm to the driver's cabin, thereby avoid the energy extravagant. On the other hand, when the cab temperature T1 is greater than or equal to the preset indoor heat dissipation cycle start temperature T2 or the air conditioner heater switch is not turned on, the internal circulation mode is not entered, i.e., the indoor heat dissipation cycle is not turned on.
It should be noted that the preset indoor heat dissipation cycle starting temperature T2 is a preset value, a value of the preset value can be adjusted and set according to actual requirements, and when the cab temperature T1 is less than the indoor heat dissipation cycle starting temperature T2, the indoor heat dissipation cycle can be started.
Further, after the cooling system enters the internal circulation mode, the control method of the cooling system further comprises the following steps: judging whether the duration time of the cab temperature T1 being less than the preset indoor heat dissipation cycle starting temperature T2 reaches a preset time (for example, 5 minutes); if so, controlling the air conditioner to be started, otherwise, not starting the air conditioner.
In an embodiment of the present invention, the control method of the cooling system further includes: judging whether the cooling system exits the internal circulation mode, namely judging whether the indoor heat dissipation circulation is closed; if so, judging whether the motor temperature T4 is greater than a first preset temperature T0 or whether the motor speed N is greater than a first preset speed N1; and if the motor temperature T4 is higher than the first preset temperature T0 or the motor speed N is higher than the first preset speed N1, controlling the electronic water pump to be started, the first electromagnetic valve to be opened and the second electromagnetic valve to be closed so as to enable the cooling system to enter an external circulation mode, namely the outdoor heat dissipation circulation is started. Wherein, under the external circulation mode, the cooling water route passes through outdoor radiator and gives off the heat to the atmosphere.
Further, the control method of the cooling system further comprises the following steps: and when the motor temperature T4 is judged to be less than or equal to the first preset temperature T0 or the motor speed N is judged to be less than or equal to the first preset speed N1, the electronic water pump is controlled to be closed, the first electromagnetic valve is controlled to be closed, and the second electromagnetic valve is controlled to be closed, so that the cooling system exits the external circulation mode, namely the outdoor heat dissipation circulation is closed.
Further, the control method of the cooling system further comprises the following steps: when the cooling system is judged not to exit the internal circulation mode, judging whether the motor temperature T4 is greater than a first preset temperature T0 and whether the motor speed N is greater than a first preset speed N1; if so, controlling the first electromagnetic valve to be opened so as to enable the cooling system to enter an external circulation mode, namely, the outdoor heat dissipation circulation is opened, otherwise, judging that the motor temperature T4 is not more than a first preset temperature T0 and the motor rotating speed N is not more than a first preset rotating speed N1, not entering the external circulation mode, and not opening the outdoor heat dissipation circulation.
In an embodiment of the present invention, the control method of the cooling system further includes: respectively acquiring the water inlet temperature t10 and the water outlet temperature t20 of the outdoor radiator; when the water inlet temperature T10 is higher than the second preset temperature T30 or the water outlet temperature T20 is higher than the third preset temperature T40(T10 is more than T30 or T20 is more than T40), controlling the electronic fan to operate at a speed lower than the second preset rotating speed N2; when the water inlet temperature T10 is higher than the second preset temperature T30 and the water outlet temperature T20 is higher than the third preset temperature T40 (namely T10 is more than T30 and T20 is more than T40), controlling the electronic fan to operate at a speed higher than the second preset rotating speed N2; when the water inlet temperature T10 is lower than the second preset temperature T30 and the water outlet temperature T20 is lower than the third preset temperature T40 (i.e. T10 < T30 and T20 < T40), or the first electromagnetic valve is closed, the electronic fan is controlled to be stopped, i.e. not operated. The above second preset rotation speed N2 may be set as follows: when the rotation speed of the electronic fan is lower than the second preset rotation speed N2, it indicates that the electronic fan is operating at a medium/low speed, and when the rotation speed of the electronic fan is higher than the second preset rotation speed N2, it indicates that the electronic fan is operating at a high speed.
Further, in an embodiment of the present invention, the method for controlling the cooling system further includes: and when the cab temperature T1 is greater than the preset indoor heat dissipation circulation closing temperature T3, controlling the air-conditioning warm air switch to close and exiting the internal circulation mode. It should be noted that the preset indoor heat dissipation cycle shutdown temperature T3 is preset, and the value thereof can be adjusted and set according to actual requirements, and when the cab temperature T1 is greater than T3, the indoor heat dissipation cycle can be shut down and an air conditioner warm air switch can be requested to be turned off.
Further, in an embodiment of the present invention, the method for controlling the cooling system further includes: and when receiving a heat dissipation circulation exiting instruction input by a driver, controlling the cooling system to forcibly exit the internal circulation mode or the external circulation mode according to the heat dissipation circulation exiting instruction. In other words, when the driver inputs an instruction to turn off the indoor heat dissipation cycle or turn off the outdoor heat dissipation cycle through, for example, a button or a switch, the driver preferentially responds to the instruction to forcibly turn off the indoor heat dissipation cycle or turn off the outdoor heat dissipation cycle, that is, forcibly exit the internal circulation mode or the external circulation mode. That is, the driver can manually turn off the above-mentioned automatic indoor or outdoor circulation heat dissipation function through a switch button or the like, and then preferentially execute according to the intention of the driver, so as to meet the requirements of the driver in real time.
It should be noted that the specific implementation manner of the control method of the cooling system according to the embodiment of the present invention is similar to the specific implementation manner of the cooling system according to the embodiment of the present invention, and please refer to the description of the cooling system part specifically, and details are not repeated here in order to reduce redundancy.
According to the control method of the cooling system, when the driving motor operates, the motor temperature, the motor rotating speed and the cab temperature are obtained, one or more of the electronic water pump, the air conditioner warm air switch, the air conditioner, the electronic fan, the first electromagnetic valve and the second electromagnetic valve are correspondingly controlled according to the motor temperature, the motor rotating speed and the cab temperature, so that the water path circulation mode of the cooling system is controlled, cooling water circulation is controlled through the electromagnetic valves in the electronic water pump, heat can be provided for the cab to be warmed, energy waste is avoided, and the electronic water pump can be automatically controlled to be turned on and turned off according to the water temperature, so that electric energy is saved.
A further embodiment of the invention also proposes a vehicle comprising a cooling system as described in any of the above embodiments of the invention. The vehicle may be a pure or hybrid vehicle.
According to the vehicle provided by the embodiment of the invention, heat can be provided for a cab to warm, energy waste is avoided, and the electronic water pump can be automatically controlled to be turned on and off according to the water temperature, so that electric energy is saved.
In addition, other configurations and functions of the vehicle according to the embodiment of the present invention are known to those skilled in the art, and are not described herein in detail in order to reduce redundancy.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., 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 (7)

1. A cooling system, comprising: an electronic water pump, a driving motor, an air conditioner warm air switch, an air conditioner, an electronic fan, an indoor radiator, an outdoor radiator, a first electromagnetic valve arranged between the outdoor radiator and the electronic water pump, a second electromagnetic valve arranged between the indoor radiator and the electronic water pump, an acquisition module and a control module,
the acquisition module is used for acquiring the motor temperature, the motor rotating speed and the cab temperature of the driving motor when the driving motor runs;
the control module is used for correspondingly controlling one or more of the electronic water pump, the air conditioner warm air switch, the air conditioner, the electronic fan, the first electromagnetic valve and the second electromagnetic valve according to the motor temperature, the motor rotating speed and the cab temperature so as to control the waterway circulation mode of the cooling system;
the waterway circulation modes of the cooling system comprise an inner circulation mode and an outer circulation mode, and the control module is used for:
judging whether the temperature of the cab is lower than a preset indoor heat dissipation circulation starting temperature or not and whether the air conditioner warm air switch is started or not;
if so, controlling the electronic water pump to be started, the first electromagnetic valve to be closed and the second electromagnetic valve to be opened so as to enable the cooling system to enter the internal circulation mode; wherein
After the cooling system enters the internal circulation mode, the control module is further configured to:
judging whether the duration time of the cab temperature being less than the preset indoor heat dissipation cycle starting temperature reaches the preset time or not;
if yes, controlling the air conditioner to be started;
further, the acquiring module is further configured to acquire a water inlet temperature and a water outlet temperature of the outdoor radiator respectively;
the control module is further used for controlling the electronic fan to operate at a speed lower than a second preset rotating speed when the temperature of the water inlet is higher than a second preset temperature or the temperature of the water outlet is higher than a third preset temperature;
when the temperature of the water inlet is higher than the second preset temperature and the temperature of the water outlet is higher than the third preset temperature, controlling the electronic fan to operate at a speed higher than a second preset rotating speed;
and when the temperature of the water inlet is lower than the second preset temperature and the temperature of the water outlet is lower than the third preset temperature, or the first electromagnetic valve is closed, controlling the electronic fan to stop.
2. The cooling system of claim 1, wherein the control module is further configured to:
determining whether the cooling system exits the internal circulation mode;
if so, judging whether the motor temperature is higher than a first preset temperature or whether the motor rotating speed is higher than a first preset rotating speed;
and if the temperature of the motor is higher than a first preset temperature or the rotating speed of the motor is higher than a first preset rotating speed, controlling the electronic water pump to be started, the first electromagnetic valve to be opened and the second electromagnetic valve to be closed so as to enable the cooling system to enter the external circulation mode.
3. The cooling system of claim 2, wherein the control module is further configured to:
and when the temperature of the motor is judged to be less than or equal to a first preset temperature or the rotating speed of the motor is judged to be less than or equal to a first preset rotating speed, the electronic water pump is controlled to be closed, the first electromagnetic valve is controlled to be closed, and the second electromagnetic valve is controlled to be closed, so that the cooling system exits the external circulation mode.
4. The cooling system of claim 2, wherein the control module is further configured to:
when the cooling system is judged not to exit the internal circulation mode, judging whether the temperature of the motor is higher than a first preset temperature or not and whether the rotating speed of the motor is higher than a first preset rotating speed or not;
if so, controlling the first electromagnetic valve to be opened so as to enable the cooling system to enter the external circulation mode.
5. The cooling system of claim 1, wherein the control module is further configured to:
and when the temperature of the cab is higher than the preset indoor heat dissipation circulation closing temperature, controlling the air conditioner warm air switch to be closed, and quitting the internal circulation mode.
6. A method for controlling a cooling system according to any one of claims 1-5, characterized by comprising the steps of:
when the driving motor runs, acquiring the motor temperature, the motor rotating speed and the cab temperature of the driving motor;
and correspondingly controlling one or more of an electronic water pump, an air-conditioning warm air switch, an air conditioner, an electronic fan, a first electromagnetic valve and a second electromagnetic valve in the cooling system according to the motor temperature, the motor speed and the cab temperature so as to control the waterway circulation mode of the cooling system.
7. A vehicle, characterized by comprising a cooling system according to any one of claims 1-5.
CN201910034246.3A 2019-01-15 2019-01-15 Cooling system, control method thereof and vehicle Active CN109606088B (en)

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