CN115366658B - Vehicle control method - Google Patents

Vehicle control method Download PDF

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Publication number
CN115366658B
CN115366658B CN202211010174.7A CN202211010174A CN115366658B CN 115366658 B CN115366658 B CN 115366658B CN 202211010174 A CN202211010174 A CN 202211010174A CN 115366658 B CN115366658 B CN 115366658B
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China
Prior art keywords
temperature
water
real
battery
radiator
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CN202211010174.7A
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Chinese (zh)
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CN115366658A (en
Inventor
张国栋
赵强
于小峰
李�瑞
赵文畅
徐利文
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FAW Jiefang Automotive Co Ltd
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FAW Jiefang Automotive Co Ltd
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Priority to CN202211010174.7A priority Critical patent/CN115366658B/en
Publication of CN115366658A publication Critical patent/CN115366658A/en
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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
    • 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
    • B60K11/04—Arrangement or mounting of radiators, radiator shutters, or radiator blinds
    • 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
    • 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
    • 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/27—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

The application provides a thermal management system for a vehicle and a vehicle control method. The motor controller is provided with a first water channel, the driving motor is provided with a second water channel, and the power battery is provided with a third water channel. The thermal management system comprises an expansion tank, a radiator and a water pump assembly. The expansion water tank is internally provided with a first chamber and a second chamber for storing cooling water, and the radiator is provided with a first radiating channel and a second radiating channel. The water pump assembly comprises a first water pump and a second water pump. The first chamber, the first water channel connection, the second water channel connection and the first heat dissipation channel are sequentially connected to form a first loop, and the first water pump is arranged in the first loop. The second chamber, the third water channel and the second heat dissipation channel are sequentially connected to form a second loop, and the second water pump is arranged in the second loop. In this scheme, with the help of an expansion tank, with the heat dissipation of the different heat dissipation channels in the radiator of first return circuit and second return circuit utilization simultaneously, reduced the volume that occupies, practiced thrift the space.

Description

Vehicle control method
Technical Field
The application relates to the technical field of vehicle thermal management, in particular to a vehicle control method.
Background
Temperature control is very important when the vehicle is running. The engine of the traditional fuel oil vehicle, the motor of the new energy automobile, the power battery of the new energy automobile and other power elements need to be at a proper temperature to ensure the working efficiency, so the vehicle is generally provided with a thermal management system for temperature management. The thermal management system of the conventional vehicle is relatively decentralized in structure because it is required to perform temperature management on a plurality of different automobile components, which results in a large volume occupied by the thermal management system.
Disclosure of Invention
Based on this, it is necessary to provide a vehicle control method aiming at the problems that the traditional thermal management system is used for temperature management of a plurality of different automobile elements, resulting in scattered structures and large occupied volumes.
According to a first aspect of the present application, there is provided a thermal management system for a vehicle including a vehicle body, and a motor controller, a drive motor, and a power battery provided to the vehicle body, the motor controller having a first water passage, the drive motor having a second water passage, and the power battery having a third water passage, the thermal management system comprising:
the expansion water tank is internally provided with a first chamber and a second chamber which are separated from each other, the first chamber and the second chamber are used for storing cooling water, and the first chamber and the second chamber are respectively provided with a water inlet and a water outlet;
The radiator is provided with a first radiating channel and a second radiating channel, the first radiating channel and the second radiating channel are respectively provided with an inlet port and an outlet port, the outlet port of the first radiating channel is connected with the water inlet of the first chamber, and the outlet port of the second radiating channel is connected with the water inlet of the second chamber; and
The water pump assembly comprises a first water pump and a second water pump;
The water outlet of the first cavity is connected with the water inlet of the first water channel, the water outlet of the first water channel is connected with the water inlet of the second water channel, and the inlet port of the first heat dissipation channel is connected with the water outlet of the second water channel to form a first loop; the first water pump is arranged on the first loop to pump the cooling water in the first cavity into the first loop;
The water outlet of the second chamber is connected with the water inlet of the third water channel, and the inlet port of the second heat dissipation channel is connected with the water outlet of the third water channel to form a second loop; the second water pump is mounted on the second circuit to pump cooling water in the second chamber into the second circuit.
In one embodiment, the thermal management system further comprises a heating device connected to the second circuit for heating the cooling water flowing into the power cell in the second circuit.
In one embodiment, the vehicle further comprises an engine water pipe, the heating device comprises a heat exchanger and an electric control valve, the heat exchanger is respectively connected with the engine water pipe and the second loop, and the electric control valve is arranged on the engine water pipe, so that hot water in the engine water pipe can flow into the heat exchanger and exchange heat with cooling water in the second loop when the electric control valve is in an open state.
In one embodiment, the radiator includes a cooling fan, and an air outlet side of the cooling fan is disposed towards the first heat dissipation channel and the second heat dissipation channel.
In one embodiment, the thermal management system further includes a transition bracket mounted on the vehicle body, wherein a portion of the transition bracket is disposed corresponding to the first circuit, and another portion of the transition bracket is disposed corresponding to the second circuit, so as to fixedly mount the first circuit and the second circuit respectively.
According to a second aspect of the present application, there is provided a vehicle control method, the vehicle including a thermal management system as described above, a motor controller including a control module, and a sensing module for sensing a first real-time temperature of a drive motor and a second real-time temperature of the control module, and a battery temperature sensing member for sensing a third real-time temperature of a power battery, the vehicle control method comprising:
acquiring the first real-time temperature, the second real-time temperature and the third real-time temperature;
comparing the first real-time temperature with a preset temperature of a motor, and comparing the second real-time temperature with a preset temperature of a control module to control the starting or stopping of the first water pump and the radiator;
And comparing the third real-time temperature with a preset battery temperature to control the second water pump and the radiator to start or stop.
In one embodiment, the preset motor temperature includes a maximum preset motor temperature and a minimum preset motor temperature, and the preset control module temperature includes a maximum preset control module temperature and a minimum preset control module temperature;
The step of comparing the first real-time temperature with a preset temperature of the motor and comparing the second real-time temperature with a preset temperature of the control module to control the starting or stopping of the first water pump and the radiator comprises the following steps:
If the first real-time temperature is higher than the maximum preset temperature of the motor or lower than the minimum preset temperature of the motor, the first water pump and the radiator are controlled to be started; and/or
And if the second real-time temperature is higher than the maximum preset temperature of the control module or lower than the minimum preset temperature of the control module, controlling the first water pump and the radiator to be started.
In one embodiment, the preset battery temperature includes a maximum preset battery temperature and a minimum preset battery temperature;
The step of comparing the third real-time temperature with a preset battery temperature to control the second water pump and the radiator to start or stop further comprises:
if the third real-time temperature is higher than the maximum preset temperature of the battery, controlling the second water pump and the radiator to start;
and if the third real-time temperature is lower than the minimum preset temperature of the battery, controlling the second water pump and the radiator to stop.
In one embodiment, the vehicle further comprises an ambient temperature sensor to sense ambient temperature;
After the step of comparing the third real-time temperature with a preset battery temperature to control the second water pump and the radiator to start or stop, the vehicle control method further includes:
Acquiring the ambient temperature;
and if the ambient temperature is greater than or equal to the third real-time temperature, controlling the second water pump and the radiator to stop.
In one embodiment, the vehicle further comprises a heat exchanger, an engine water pipe, a water temperature sensing piece arranged on the engine water pipe and an electric control valve arranged on the engine water pipe, wherein the water temperature sensing piece is used for sensing the temperature of cooling liquid in the engine water pipe, the heat exchanger is respectively connected with the engine water pipe and a second loop, and the electric control valve is used for controlling the connection part of the engine water pipe and the heat exchanger; the battery preset temperature comprises a battery maximum preset temperature and a battery minimum preset temperature;
The step of comparing the third real-time temperature with a preset battery temperature to control the second water pump and the radiator to start or stop further comprises:
acquiring the temperature of cooling liquid in the engine water pipe;
And if the third real-time temperature is lower than the minimum preset temperature of the battery and the temperature of the cooling liquid is higher than the third real-time temperature, controlling the second water pump to start and controlling the electric control valve to open.
In the technical scheme of the application, the motor controller and the motor are subjected to water cooling heat dissipation through the first loop, and the power battery is subjected to water cooling heat dissipation through the second loop. The heat management system is provided with a first chamber and a second chamber in the expansion water tank so as to supply water for the first loop and the second loop respectively, and then the cooling water in the first loop and the cooling water in the second loop are radiated respectively through a first radiating channel and a second radiating channel in the radiator. In the scheme, the first loop and the second loop are simultaneously radiated through different radiating channels in the radiator by means of the expansion water tank, so that occupied volume is reduced, and space is saved.
In practical application, the vehicle controller can pump the cooling water in the expansion water tank into the first loop and the second loop through the first water pump and the second water pump, and control the radiator to radiate heat. In the first loop, the cooling water is triggered from the first cavity, and firstly cools the first water channel inside the motor controller, and the water outlet of the first water channel is connected with the water inlet of the second water channel, so that the cooling water enters the second water channel inside the driving motor from the motor controller, and cools the driving motor. The heat that the motor controller produced in the course of the work is not high, therefore the cooling water can not rise to too high temperature after cooling the motor controller, can also carry out effectual cooling to subsequent driving motor to increased the utilization ratio of cooling water, let cooling efficiency also obtain improving.
Drawings
FIG. 1 is a schematic diagram of a thermal management system for a vehicle according to an embodiment of the present application;
FIG. 2 is a schematic view of the thermal management system of FIG. 1 from another angle;
FIG. 3 is a flow chart illustrating an embodiment of a vehicle control method according to the present application;
FIG. 4 is a flow chart of another embodiment of the vehicle control method of FIG. 3.
Reference numerals illustrate:
Detailed Description
In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is at a lower level than the second feature.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Temperature control is very important when the vehicle is running. The engine of the traditional fuel oil vehicle, the motor of the new energy automobile, the power battery of the new energy automobile and other power elements need to be at a proper temperature to ensure the working efficiency, so the vehicle is generally provided with a thermal management system for temperature management. The thermal management system of the conventional vehicle is relatively decentralized in structure because it is required to perform temperature management on a plurality of different automobile components, which results in a large volume occupied by the thermal management system.
In view of the above, the present application provides a thermal management system for a vehicle, which aims to solve the problems of the conventional thermal management system that the temperature management is performed on a plurality of different automobile components, resulting in a scattered structure and a large occupied volume. Fig. 1 to 2 are schematic structural views of an embodiment of a thermal management system for a vehicle according to the present application.
Referring to fig. 1 and 2, a thermal management system 100 according to the present application is used for thermal management of a vehicle, the vehicle includes a vehicle body, a motor controller, a driving motor and a power battery, wherein the motor controller is provided with a first water channel, the driving motor is provided with a second water channel, and the power battery is provided with a third water channel. The thermal management system 100 includes an expansion tank 1, a radiator 2, a water pump assembly.
The inside of expansion tank 1 is equipped with first cavity and the second cavity of mutual wall, and first cavity and second cavity are used for storing the cooling water, and first cavity and second cavity all are equipped with water inlet and delivery port.
The radiator 2 is provided with a first radiating channel and a second radiating channel, the first radiating channel and the second radiating channel are respectively provided with an inlet port and an outlet port, the outlet port of the first radiating channel is connected with the water inlet of the first chamber, and the outlet port of the second radiating channel is connected with the water inlet of the second chamber. The water pump assembly comprises a first water pump and a second water pump.
The water outlet of the first cavity is connected with the water inlet of the first water channel, the water outlet of the first water channel is connected with the water inlet of the second water channel, and the inlet port of the first heat dissipation channel is connected with the water outlet of the second water channel to form a first loop 3. The first water pump is arranged on the first loop 3 to pump the cooling water in the first cavity into the first loop 3.
The water outlet of the second chamber is used for being connected with the water inlet of the third water channel, and the inlet port of the second heat dissipation channel is connected with the water outlet of the third water channel to form a second loop 4. A second water pump is mounted on the second circuit 4 to pump cooling water in the second chamber into the second circuit 4.
In the technical scheme of the application, the motor controller and the motor are subjected to water cooling heat dissipation through the first loop 3, and the power battery is subjected to water cooling heat dissipation through the second loop 4. The thermal management system 100 supplies water to the first circuit 3 and the second circuit 4 by providing the first chamber and the second chamber in the expansion tank 1, and then radiates cooling water in the first circuit 3 and the second circuit 4 through the first radiating channel and the second radiating channel in the radiator 2. In the scheme, the first loop 3 and the second loop 4 are simultaneously radiated by means of one expansion water tank 1 through different radiating channels in the radiator 2, so that the occupied volume is reduced, and the space is saved.
In practical application, the vehicle controller can pump the cooling water in the expansion tank 1 into the first loop 3 and the second loop 4 through the first water pump and the second water pump, and control the radiator 2 to radiate heat. In the first loop 3, the cooling water is triggered from the first chamber, firstly enters the first water channel inside the motor controller to cool the motor controller, and the water outlet of the first water channel is connected with the water inlet of the second water channel, so that the cooling water enters the second water channel inside the driving motor from the motor controller to cool the driving motor. The heat that the motor controller produced in the course of the work is not high, therefore the cooling water can not rise to too high temperature after cooling the motor controller, can also carry out effectual cooling to subsequent driving motor to increased the utilization ratio of cooling water, let cooling efficiency also obtain improving.
In specific applications, electric vehicles or hybrid vehicles require the power of a power battery to drive, and the power battery has a high requirement on temperature. The power battery may not work properly even when the temperature is too high or too low, so the power battery needs to be cooled not only when the temperature is too high, but also when the temperature is too low. Thus, in the present embodiment, the thermal management system 100 further includes a heating device 6, where the heating device 6 is connected to the second circuit 4 for heating the cooling water flowing into the power battery in the second circuit 4.
The heating device 6 can heat the cooling water in the second loop 4, and the cooling water flows into the third water channel in the power battery after being heated, and the cooling water heats the power battery through self heat. In winter or other low temperature environments, the power battery may be difficult to start or work normally, and the heating device 6 can heat the power battery by heating the cooling water, thereby ensuring the normal work of the power battery.
In some embodiments, the vehicle further comprises an engine water pipe, the heating device 6 comprises a heat exchanger 61 and an electric control valve 62, the heat exchanger 61 is respectively connected with the engine water pipe and the second circuit 4, and the electric control valve 62 is mounted on the engine water pipe so that hot water in the engine water pipe can flow into the heat exchanger 61 and exchange heat with cooling water in the second circuit 4 when the electric control valve 62 is in an open state.
Specifically, the heating device 6 heats the cooling water in the second circuit 4 by the heat exchanger 61. The heat exchanger 61 is connected to the engine water pipe and the second circuit 4, respectively, so that hot waste water in the engine water pipe can exchange heat with cooling water in the second circuit 4, thereby heating the cooling water in the second circuit 4.
In a specific application, the heating device 6 may comprise an electrically controlled valve 62 arranged on the engine water conduit, so that when the electrically controlled valve 62 is opened, the hot waste water in the engine water conduit flows into the heat exchanger 61, so that the cooling water in the second circuit 4 can be heated. The heating device 6 can be controlled to heat the cooling water in the second loop 4 by controlling the switch of the electric control valve 62, and the thermal management system 100 can switch the power battery between the heating state and the cooling state, so that the power battery can always work at a proper temperature, and the power battery can work normally.
In some embodiments, the radiator 2 includes a cooling fan 21, and an air outlet side of the cooling fan 21 is disposed towards the first heat dissipation channel and the second heat dissipation channel.
After the cooling water in the first loop 3 and the second loop 4 is cooled, the cooling water enters the expansion water tank 1 again to prepare for the next cooling cycle. Before that, the cooling water in the first loop 3 and the second loop 4 will first enter the radiator 2 to perform heat dissipation and temperature reduction, so as to ensure the heat dissipation effect of the next heat dissipation cycle. In this solution, the radiator 2 needs to radiate the cooling water in the first loop 3 and the second loop 4 at the same time, and when the temperature of the cooling water is high, the radiator 2 may not be able to reduce the temperature of the cooling water to a suitable temperature in a limited time. Therefore, the radiator 2 can assist in radiating heat through the first radiating channel and the second radiating channel by adding a cooling fan 21, so as to ensure that cooling water in the first loop 3 and the second loop 4 can be reduced to a proper temperature before entering the expansion water tank 1, thus ensuring the radiating effect of the next radiating cycle.
In some embodiments, the thermal management system 100 further includes a transition bracket 5 mounted on the vehicle body, wherein a portion of the transition bracket 5 is disposed corresponding to the first circuit 3, and another portion of the transition bracket is disposed corresponding to the second circuit 4, so as to fixedly mount the first circuit 3 and the second circuit 4, respectively.
In this embodiment, the various components of the thermal management system 100 need to be mounted to the vehicle body, and some pipes need to be fixedly mounted to avoid rattling during driving of the vehicle to cause collisions. The thermal management system 100 fixedly installs the pipelines of the first loop 3 and the second loop 4 through the transition support 5, and the transition support 5 is fixedly installed on the vehicle body, so that the first loop 3 and the second loop 4 can be fixedly arranged relative to the vehicle body, unnecessary shaking is avoided, and the loss of the pipelines is reduced.
The thermal management system 100 of the present application is applied to a vehicle, which can be controlled and used by a vehicle controller. Therefore, the present application also proposes a vehicle control method, and fig. 3 to 4 are schematic flow diagrams of an embodiment of the vehicle control method.
Referring to fig. 3, the vehicle includes the thermal management system 100 according to any of the above embodiments, a motor controller including a control module, and a sensing module for sensing a first real-time temperature of a driving motor and a second real-time temperature of the control module, and a battery temperature sensing member for sensing a third real-time temperature of a power battery, and the vehicle control method includes:
s10: and acquiring a first real-time temperature, a second real-time temperature and a third real-time temperature.
S20: the first real-time temperature is compared with the preset temperature of the motor, and the second real-time temperature is compared with the preset temperature of the control module so as to control the starting or stopping of the first water pump and the radiator 2.
S30: the third real-time temperature is compared with the preset battery temperature to control the second water pump and the radiator 2 to start or stop.
In the present application, the temperatures of the drive motor, the motor controller, and the power battery are not always in an overheated state, and therefore the vehicle is not always required to radiate heat from the three. The vehicle actually senses the first real-time temperature of the driving motor and the second real-time temperature of the control module through the sensing module, and senses the third real-time temperature of the power battery through the battery temperature sensing piece, so that whether the current temperatures of the driving motor, the motor controller and the power battery can normally work or not is judged through the first real-time temperature, the second real-time temperature and the third real-time temperature, and if the current temperatures are too high, heat dissipation is carried out on corresponding parts.
Specifically, the vehicle controller may obtain the first real-time temperature, the second real-time temperature and the third real-time temperature, compare the first real-time temperature with the preset temperature of the motor, and compare the second real-time temperature with the preset temperature of the control module, and when the first real-time temperature is greater than the preset temperature of the motor or the second real-time temperature is greater than the preset temperature of the control module, it indicates that the temperature of the motor controller or the driving motor is higher, and heat dissipation is required. At this time, the vehicle controller controls the first water pump and the radiator 2 to be started, so that the cooling water in the first chamber is pumped into the first loop 3, thereby cooling the motor controller and the driving motor. When the first real-time temperature is smaller than the preset temperature of the motor and the second real-time temperature is smaller than the preset temperature of the control module, the motor controller or the driving motor is lower in temperature, heat dissipation is not needed, and therefore the first water pump and the radiator 2 do not need to be started.
In addition, the vehicle controller can also compare the third real-time temperature with the preset battery temperature, confirm whether the power battery needs to dissipate heat according to the magnitude relation between the third real-time temperature and the preset battery temperature, and control the second water pump and the radiator 2 to start or stop according to the relationship. As described above, the vehicle controller controls the first water pump, the second water pump and the radiator 2 to work respectively, so that the working temperatures of the driving motor, the motor controller and the power battery are always appropriate, and the normal work of the driving motor, the motor controller and the power battery is ensured.
In some embodiments, the motor preset temperature comprises a motor maximum preset temperature and a motor minimum preset temperature, and the control module preset temperature comprises a control module maximum preset temperature and a control module minimum preset temperature.
The step S20 specifically includes:
s21: and if the first real-time temperature is higher than the maximum preset temperature of the motor or lower than the minimum preset temperature of the motor, controlling the first water pump and the radiator 2 to be started.
S22: and if the second real-time temperature is higher than the maximum preset temperature of the control module or lower than the minimum preset temperature of the control module, controlling the first water pump and the radiator 2 to be started.
In this embodiment, the control modules of the driving motor and the motor controller are difficult to work normally when the temperature is high or too low, so the thermal management system 100 needs to keep the control modules of the driving motor and the motor controller at a proper temperature.
When the first real-time temperature is higher than the maximum preset temperature of the motor or lower than the minimum preset temperature of the motor, the working temperature of the driving motor is relatively unsuitable, so that the first water pump and the radiator 2 need to be controlled to be started, and the temperature of the driving motor needs to be regulated and controlled. When the second real-time temperature is higher than the maximum preset temperature of the control module or lower than the minimum preset temperature of the control module, the working temperature of the control module of the motor controller is indicated to be relatively unsuitable, so that the first water pump and the radiator 2 need to be controlled to be started, and the temperature of the motor controller needs to be adjusted.
The motor controller and the cooling water path of the driving motor are mutually communicated, so that when any one of the motor controller and the driving motor has unsuitable temperature, the first water pump and the radiator 2 can be started. Of course, when the temperatures of the motor controller and the driving motor are not suitable, the first water pump and the radiator 2 are required to be started, so that the temperatures of the motor controller and the driving motor can be regulated and controlled simultaneously. The vehicle controller is controlled by
In some embodiments, the battery preset temperature includes a battery maximum preset temperature and a battery minimum preset temperature. Step S30 further includes:
s31: and if the third real-time temperature is higher than the maximum preset temperature of the battery, controlling the second water pump and the radiator 2 to be started.
S32: and if the third real-time temperature is lower than the minimum preset temperature of the battery, controlling the second water pump and the radiator 2 to stop.
In this embodiment, after the vehicle controller obtains the third real-time temperature, the third real-time temperature is compared with the maximum preset temperature of the battery and the minimum preset temperature of the battery, respectively. If the third real-time temperature is higher than the maximum preset temperature of the battery, the power battery is excessively high, and the second water pump and the radiator 2 are required to be started to radiate heat for the power battery. If the third real-time temperature is lower than the minimum preset battery temperature, the power battery temperature is too low, and heat dissipation is not needed at this time, so that the second water pump and the radiator 2 need to be stopped. The vehicle controller respectively compares the third real-time temperature with the maximum preset temperature of the battery and the minimum preset temperature of the battery, so that the working temperature of the power battery is ensured to be kept in a proper range, and the working efficiency of the power battery is ensured.
In some embodiments, the vehicle further comprises an ambient temperature sensor to sense an ambient temperature. After step S30, the vehicle control method further includes:
S33: the ambient temperature is obtained.
S34: and if the ambient temperature is greater than or equal to the third real-time temperature, controlling the second water pump and the radiator 2 to stop.
In the present embodiment, the radiator 2 is capable of radiating heat and cooling the cooling water in the second circuit 4, but generally only the cooling water in the second circuit 4 can be reduced to be almost level with the ambient temperature. Therefore, after the vehicle controller obtains the third real-time temperature, the third real-time temperature can be compared with the ambient temperature, and when the ambient temperature is greater than or equal to the third real-time temperature, the temperature of the cooling water is higher than the working temperature of the power battery, so that the second loop 4 cannot cool the power battery. When the second circuit 4 cannot cool, the vehicle controller may control the second water pump and the radiator 2 to stop, thereby reducing the ineffective power consumption of the thermal management system 100.
In some embodiments, referring to fig. 4, the vehicle further includes a heat exchanger 61, an engine water pipe, a water temperature sensing member mounted on the engine water pipe and an electric control valve 62 mounted on the engine water pipe, wherein the water temperature sensing member is used for sensing the temperature of the cooling liquid in the engine water pipe, the heat exchanger 61 is respectively connected with the engine water pipe and the second loop 4, and the electric control valve 62 is used for controlling the connection part of the engine water pipe and the heat exchanger 61. The preset battery temperature includes a maximum preset battery temperature and a minimum preset battery temperature.
Step S30 further includes:
s35: and obtaining the temperature of the cooling liquid in the water pipe of the engine.
S36: if the third real-time temperature is lower than the minimum preset temperature of the battery and the temperature of the cooling liquid is higher than the third real-time temperature, the second water pump is controlled to be started, and the electric control valve 62 is controlled to be opened.
The power cell also fails to function properly when the temperature is too low, so the thermal management system 100 needs to heat the power cell when the temperature of the power cell is too low. In the present application, the vehicle may be a hybrid vehicle, and the hybrid vehicle is provided with both an engine and a power motor, so in this embodiment, the thermal management system 100 may heat the power battery by using waste water and waste gas generated after the engine performs work.
Specifically, the engine needs to be cooled by the coolant after operation, and the very high temperature of the engine causes the temperature of the coolant to rise very high. The vehicle controller may first obtain the temperature of the coolant in the water pipe of the engine, then compare the third real-time temperature with the minimum preset temperature of the battery and the temperature of the coolant, and when the third real-time temperature is lower than the minimum preset temperature and the temperature of the coolant, the vehicle controller may control the second water pump and the electric control valve 62 to be opened, so that the engine coolant exchanges heat with the coolant in the second loop 4 in the heat exchanger 61, thereby heating the coolant in the second loop 4, and the power battery is heated by the heated coolant, so that the working temperature of the power battery is increased to a proper temperature.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims (7)

1. A vehicle control method, characterized in that the vehicle includes a vehicle body, a motor controller provided to the vehicle body, a drive motor, a power battery, a thermal management system, and a battery temperature sensing member, the motor controller having a first water passage, the drive motor having a second water passage, the power battery having a third water passage, the thermal management system comprising:
the expansion water tank is internally provided with a first chamber and a second chamber which are separated from each other, the first chamber and the second chamber are used for storing cooling water, and the first chamber and the second chamber are respectively provided with a water inlet and a water outlet;
The radiator is provided with a first radiating channel and a second radiating channel, the first radiating channel and the second radiating channel are respectively provided with an inlet port and an outlet port, the outlet port of the first radiating channel is connected with the water inlet of the first chamber, and the outlet port of the second radiating channel is connected with the water inlet of the second chamber; and
The water pump assembly comprises a first water pump and a second water pump;
The water outlet of the first cavity is connected with the water inlet of the first water channel, the water outlet of the first water channel is connected with the water inlet of the second water channel, and the inlet port of the first heat dissipation channel is connected with the water outlet of the second water channel to form a first loop; the first water pump is arranged on the first loop to pump the cooling water in the first cavity into the first loop;
The water outlet of the second chamber is connected with the water inlet of the third water channel, and the inlet port of the second heat dissipation channel is connected with the water outlet of the third water channel to form a second loop; the second water pump is arranged on the second loop to pump the cooling water in the second cavity into the second loop;
the motor controller comprises a control module and a sensing module for sensing a first real-time temperature of the driving motor and a second real-time temperature of the control module, the battery temperature sensing piece is used for sensing a third real-time temperature of the power battery, and the vehicle control method comprises the following steps:
acquiring the first real-time temperature, the second real-time temperature and the third real-time temperature;
comparing the first real-time temperature with a preset temperature of a motor, and comparing the second real-time temperature with a preset temperature of a control module to control the starting or stopping of the first water pump and the radiator;
comparing the third real-time temperature with a preset battery temperature to control the second water pump and the radiator to start or stop;
the motor preset temperature comprises a motor maximum preset temperature and a motor minimum preset temperature, and the control module preset temperature comprises a control module maximum preset temperature and a control module minimum preset temperature;
The step of comparing the first real-time temperature with a preset temperature of the motor and comparing the second real-time temperature with a preset temperature of the control module to control the starting or stopping of the first water pump and the radiator comprises the following steps:
If the first real-time temperature is higher than the maximum preset temperature of the motor or lower than the minimum preset temperature of the motor, the first water pump and the radiator are controlled to be started; and/or
And if the second real-time temperature is higher than the maximum preset temperature of the control module or lower than the minimum preset temperature of the control module, controlling the first water pump and the radiator to be started.
2. The vehicle control method according to claim 1, characterized in that the radiator includes a cooling fan, an air outlet side of which is provided toward the first heat radiation passage and the second heat radiation passage;
the battery preset temperature comprises a battery maximum preset temperature and a battery minimum preset temperature;
The step of comparing the third real-time temperature with a preset battery temperature to control the second water pump and the radiator to start or stop further comprises:
if the third real-time temperature is higher than the maximum preset temperature of the battery, controlling the second water pump and the radiator to start;
and if the third real-time temperature is lower than the minimum preset temperature of the battery, controlling the second water pump and the radiator to stop.
3. The vehicle control method according to claim 1, characterized in that the vehicle further includes an ambient temperature sensor for sensing an ambient temperature;
After the step of comparing the third real-time temperature with a preset battery temperature to control the second water pump and the radiator to start or stop, the vehicle control method further includes:
Acquiring the ambient temperature;
and if the ambient temperature is greater than or equal to the third real-time temperature, controlling the second water pump and the radiator to stop.
4. The vehicle control method according to claim 1, wherein the vehicle further comprises a heat exchanger, an engine water pipe, a water temperature sensing member mounted on the engine water pipe for sensing a temperature of a cooling liquid in the engine water pipe, and an electric control valve mounted on the engine water pipe, the heat exchanger being connected to the engine water pipe and the second circuit, respectively, the electric control valve being for controlling on-off of a connection portion of the engine water pipe and the heat exchanger; the battery preset temperature comprises a battery maximum preset temperature and a battery minimum preset temperature;
The step of comparing the third real-time temperature with a preset battery temperature to control the second water pump and the radiator to start or stop further comprises:
acquiring the temperature of cooling liquid in the engine water pipe;
And if the third real-time temperature is lower than the minimum preset temperature of the battery and the temperature of the cooling liquid is higher than the third real-time temperature, controlling the second water pump to start and controlling the electric control valve to open.
5. The vehicle control method according to claim 1, characterized by further comprising a heating device connected to the second circuit for heating the cooling water flowing into the power battery in the second circuit.
6. The vehicle control method according to claim 5, characterized in that the vehicle further includes an engine water pipe, the heating device includes a heat exchanger and an electric control valve, the heat exchanger is connected to the engine water pipe and the second circuit, respectively, and the electric control valve is mounted on the engine water pipe so that hot water in the engine water pipe can flow into the heat exchanger and exchange heat with cooling water in the second circuit when the electric control valve is in an open state.
7. The vehicle control method of claim 1, wherein the thermal management system further comprises a transition bracket mounted on the vehicle body, a portion of the transition bracket being disposed corresponding to the first circuit and another portion being disposed corresponding to the second circuit for fixedly mounting the first circuit and the second circuit, respectively.
CN202211010174.7A 2022-08-23 2022-08-23 Vehicle control method Active CN115366658B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104808719A (en) * 2015-03-12 2015-07-29 北京长安汽车工程技术研究有限责任公司 Temperature control system and method
CN106004338A (en) * 2016-07-27 2016-10-12 宁波吉利汽车研究开发有限公司 Car heat management system and car
CN108482067A (en) * 2018-05-21 2018-09-04 上海思致汽车工程技术有限公司 A kind of energy-saving multiloop thermal management system of electric automobile
CN110329112A (en) * 2019-08-19 2019-10-15 厦门金龙联合汽车工业有限公司 A kind of automobile integrated thermal management system
CN212612705U (en) * 2020-06-19 2021-02-26 山推工程机械股份有限公司 Electronic bull-dozer cooling system and electronic bull-dozer
CN112477699A (en) * 2020-12-04 2021-03-12 安徽江淮汽车集团股份有限公司 Thermal management system, control method and device, storage medium and vehicle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104808719A (en) * 2015-03-12 2015-07-29 北京长安汽车工程技术研究有限责任公司 Temperature control system and method
CN106004338A (en) * 2016-07-27 2016-10-12 宁波吉利汽车研究开发有限公司 Car heat management system and car
CN108482067A (en) * 2018-05-21 2018-09-04 上海思致汽车工程技术有限公司 A kind of energy-saving multiloop thermal management system of electric automobile
CN110329112A (en) * 2019-08-19 2019-10-15 厦门金龙联合汽车工业有限公司 A kind of automobile integrated thermal management system
CN212612705U (en) * 2020-06-19 2021-02-26 山推工程机械股份有限公司 Electronic bull-dozer cooling system and electronic bull-dozer
CN112477699A (en) * 2020-12-04 2021-03-12 安徽江淮汽车集团股份有限公司 Thermal management system, control method and device, storage medium and vehicle

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