CN115366658A - Thermal management system for vehicle and vehicle control method - Google Patents

Thermal management system for vehicle and vehicle control method Download PDF

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Publication number
CN115366658A
CN115366658A CN202211010174.7A CN202211010174A CN115366658A CN 115366658 A CN115366658 A CN 115366658A CN 202211010174 A CN202211010174 A CN 202211010174A CN 115366658 A CN115366658 A CN 115366658A
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temperature
water
real
vehicle
loop
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CN202211010174.7A
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CN115366658B (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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    • 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 has a first water channel, and the driving motor has a second water channel, and the power battery has a third water channel. The heat management system comprises an expansion water tank, a radiator and a water pump assembly. The expansion water tank is internally provided with a first cavity and a second cavity for storing cooling water, and the radiator is provided with a first heat dissipation channel and a second heat dissipation channel. The water pump assembly comprises a first water pump and a second water pump. The first cavity, 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 cavity, 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 on the second loop. In the scheme, the first loop and the second loop are simultaneously cooled by using different cooling channels in the radiator by means of the expansion water tank, so that the occupied volume is reduced, and the space is saved.

Description

Thermal management system for vehicle and vehicle control method
Technical Field
The present application relates to the field of vehicle thermal management technologies, and in particular, to a thermal management system for a vehicle and a vehicle control method.
Background
Temperature control is very important when the vehicle is running. The engine of the traditional fuel vehicle, the motor of the new energy vehicle, the power element of the power battery of the new energy vehicle and the like all 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 conventional thermal management system for vehicles is distributed because it needs to manage the temperature of a plurality of different automobile components, which results in a large volume occupied by the thermal management system.
Disclosure of Invention
Therefore, it is necessary to provide a thermal management system and a vehicle control method for solving the problems of the conventional thermal management system that the structure is dispersed and the occupied volume is large because the conventional thermal management system manages the temperatures of a plurality of different automobile components.
According to a first aspect of the application, a thermal management system for a vehicle is provided, the vehicle including a vehicle body, and a motor controller, a driving motor and a power battery provided in the vehicle body, the motor controller having a first water channel, the driving motor having a second water channel, the power battery having a third water channel, the thermal management system comprising:
the expansion water tank is internally provided with a first cavity and a second cavity which are mutually separated, the first cavity and the second cavity are used for storing cooling water, and the first cavity and the second cavity are both 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 both 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 cavity, and the outlet port of the second radiating channel is connected with the water inlet of the second cavity; and the number of the first and second groups,
the water pump assembly comprises a first water pump and a second water pump;
the water outlet of the first chamber is used for being 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 used for being 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 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; the second water pump is installed on the second loop to pump the cooling water in the second chamber into the second loop.
In one embodiment, the thermal management system further comprises a heating device connected to the second loop for heating the cooling water flowing into the power battery in the second loop.
In one embodiment, the vehicle further comprises an engine water pipe, the heating device comprises a heat exchanger and an electronic control valve, the heat exchanger is respectively connected with the engine water pipe and the second loop, and the electronic 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 loop when the electronic control valve is in an open state.
In one embodiment, the heat sink includes a cooling fan, and an air outlet side of the cooling fan is disposed toward the first heat dissipation channel and the second heat dissipation channel.
In one embodiment, the thermal management system further comprises a transition bracket mounted on the vehicle body, wherein one part of the transition bracket is arranged corresponding to the first loop, and the other part of the transition bracket is arranged corresponding to the second loop, so that the first loop and the second loop are fixedly mounted respectively.
According to a second aspect of the present application, there is provided a vehicle control method, the vehicle including the thermal management system, the motor controller, and the battery temperature sensing member as described above, the motor controller including 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 member being for sensing a third real-time temperature of the power battery, the vehicle control method including:
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 motor temperature, and comparing the second real-time temperature with a preset control module temperature to control the start or stop of the first water pump and the radiator;
and comparing the third real-time temperature with a preset temperature of a battery 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 the preset motor temperature and the step of comparing the second real-time temperature with the preset control module temperature so as 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, controlling the first water pump and the radiator 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 be started;
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 for sensing an ambient temperature;
after the step of comparing the third real-time temperature with the preset temperature of the battery 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 environment 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 element arranged on the engine water pipe and an electric control valve arranged on the engine water pipe, wherein the water temperature sensing element 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 to be switched on and off; the preset temperature of the battery comprises a maximum preset temperature of the battery and a minimum preset temperature of the battery;
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 this application, carry out the water-cooling heat dissipation to motor controller and motor through first return circuit to carry out the water-cooling heat dissipation to power battery through the second return circuit. The heat management system respectively supplies water to the first loop and the second loop by arranging the first chamber and the second chamber in the expansion water tank, and then respectively dissipates the cooling water in the first loop and the second loop through the first heat dissipation channel and the second heat dissipation channel in the radiator. In this scheme, with the help of an expansion tank, and dispel the heat simultaneously to first return circuit and second return circuit through the different heat dissipation channels in the radiator, so reduced the volume that occupies, practiced thrift the space.
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 dissipate heat. In the first loop, cooling water is triggered from the first chamber and firstly enters a first water channel in the motor controller to cool the motor controller, and a water outlet of the first water channel is connected with a water inlet of a second water channel, so that the cooling water enters a second water channel in the driving motor from the motor controller to cool the driving motor. The heat generated by the motor controller in the working process is not high, so that the cooling water can not rise to too high temperature after cooling the motor controller, and can effectively cool a subsequent driving motor, thereby increasing the utilization rate of the cooling water and improving the cooling efficiency.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of a thermal management system for a vehicle as set forth herein;
FIG. 2 is a schematic view of another perspective of the thermal management system of FIG. 1;
FIG. 3 is a schematic flow chart diagram illustrating one embodiment of a vehicle control method according to the present disclosure;
fig. 4 is a flow chart illustrating another embodiment of the vehicle control method of fig. 3.
The reference numbers illustrate:
Figure BDA0003810452220000051
Figure BDA0003810452220000061
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.
In the description of the present application, it is to 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," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, a first feature is "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediary. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean 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 "secured to" 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. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are for purposes of illustration only and do not denote a single embodiment.
Temperature control is very important when the vehicle is running. The engine of the traditional fuel vehicle, the motor of the new energy vehicle, the power element of the power battery of the new energy vehicle and the like all 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 conventional thermal management system for vehicles is distributed because it needs to manage the temperature of a plurality of different automobile components, which results in a large volume occupied by the thermal management system.
In view of this, the present application provides a thermal management system for a vehicle, which aims to solve the problems of dispersed structure and large occupied volume caused by temperature management of a plurality of different automobile elements by a conventional thermal management system. Fig. 1 to 2 are schematic structural diagrams 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 thermally managing a vehicle, where the vehicle includes a vehicle body, and a motor controller, a driving motor and a power battery that are disposed on the vehicle body, the motor controller has a first water channel, the driving motor has a second water channel, and the power battery has a third water channel. The thermal management system 100 comprises an expansion tank 1, a radiator 2 and a water pump assembly.
The expansion tank 1 is 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 both provided with a water inlet and a water outlet.
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 both 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 cavity, and the outlet port of the second radiating channel is connected with the water inlet of the second cavity. The water pump assembly comprises a first water pump and a second water pump.
The water outlet of the first chamber is used for being 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 used for being connected with the water outlet of the second water channel to form a first loop 3. The first water pump is provided on the first circuit 3 to pump the cooling water in the first chamber into the first circuit 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 the cooling water in the second chamber into the second circuit 4.
In the technical scheme of this application, carry out the liquid cooling heat dissipation to motor controller and motor through first return circuit 3 to carry out the liquid cooling heat dissipation to power battery through second return circuit 4. The thermal management system 100 provides a first chamber and a second chamber in the expansion tank 1 to supply water to the first loop 3 and the second loop 4, and then dissipates the cooling water in the first loop 3 and the second loop 4 through a first heat dissipation channel and a second heat dissipation 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 and 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 may 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 dissipate heat. In the first loop 3, cooling water is triggered from the first chamber and firstly enters a first water channel in the motor controller to cool the motor controller, and a water outlet of the first water channel is connected with a water inlet of a second water channel, so that the cooling water enters a second water channel in the driving motor from the motor controller to cool the driving motor. The heat generated by the motor controller in the working process is not high, so that the cooling water can not rise to too high temperature after cooling the motor controller, and can effectively cool a subsequent driving motor, thereby increasing the utilization rate of the cooling water and improving the cooling efficiency.
In specific application, the electric vehicle or the hybrid vehicle needs the electric power of the power battery for driving, and the requirement of the power battery on temperature is high. The power battery can not work normally when the temperature is too high or too low, so that the power battery needs to be cooled not only when overheated, but also when overcooled. Therefore, in this embodiment, the thermal management system 100 further includes a heating device 6, and the heating device 6 is connected to the second loop 4 for heating the cooling water flowing into the power battery in the second loop 4.
The heating device 6 is able to heat the cooling water in the second circuit 4, which flows into the third water channel inside the power cell after being heated, and the cooling water heats the power cell by its own heat. In winter or other low temperature environments of the vehicle, the power battery may be difficult to start or to operate normally, and the heating device 6 can heat the power battery by heating the cooling water, thereby ensuring normal operation 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 electronic control valve 62, the heat exchanger 61 is connected to the engine water pipe and the second circuit 4 respectively, and the electronic control valve 62 is mounted on the engine water pipe to enable hot water in the engine water pipe to flow into the heat exchanger 61 and exchange heat with cooling water in the second circuit 4 when the electronic control valve 62 is in an open state.
Specifically, the heating device 6 heats the cooling water in the second circuit 4 through the heat exchanger 61. The heat exchanger 61 is connected to the engine water pipe and the second loop 4, respectively, so that the hot waste water in the engine water pipe can exchange heat with the cooling water in the second loop 4, thereby heating the cooling water in the second loop 4.
In a particular application, the heating device 6 may comprise an electrically controlled valve 62 arranged in the engine water line, so that when the electrically controlled valve 62 is opened, the hot waste water in the engine water line flows into the heat exchanger 61, so that the cooling water in the second circuit 4 can be heated. Whether the heating device 6 heats the cooling water in the second loop 4 or not can be controlled by controlling the switch of the electric control valve 62, so that the thermal management system 100 enables the power battery to be switched between a heating state and a cooling state, the power battery can be ensured to work at a proper temperature all the time, and the power battery can work normally.
In some embodiments, the heat sink 2 includes a cooling fan 21, and an air outlet side of the cooling fan 21 is disposed toward 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 finishes heat dissipation, the cooling water enters the expansion water tank 1 again to prepare for the next heat dissipation cycle. Before this, the cooling water in the first loop 3 and the second loop 4 enters the radiator 2 to perform heat dissipation and cooling, so as to ensure the heat dissipation effect of the next heat dissipation cycle. In this embodiment, 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 lower the temperature of the cooling water to a proper temperature within a limited time. Therefore, the radiator 2 can be additionally provided with a cooling fan 21, and the cooling fan 21 can be used for carrying out auxiliary heat dissipation on the first heat dissipation channel and the second heat dissipation channel, so that the cooling water in the first loop 3 and the cooling water in the second loop 4 can be ensured to be reduced to a proper temperature before entering the expansion water tank 1, and the heat dissipation effect of the next heat dissipation cycle is ensured.
In some embodiments, the thermal management system 100 further includes a transition bracket 5 mounted on the vehicle body, and a portion of the transition bracket 5 is disposed corresponding to the first loop 3, and another portion is disposed corresponding to the second loop 4, so as to respectively fix the first loop 3 and the second loop 4.
In this embodiment, each component of the thermal management system 100 needs to be installed on the vehicle body, and some pipes need to be installed fixedly to avoid the occurrence of shaking and collision when the vehicle is running. The heat 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 is applied to a vehicle, and the vehicle can be controlled and used by a vehicle controller. Therefore, the present application further 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, the motor controller and the battery temperature sensing device according to any of the above embodiments, the motor controller includes 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 device is used for sensing a third real-time temperature of the 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: and comparing the first real-time temperature with the preset motor temperature, and comparing the second real-time temperature with the preset control module temperature to control the start or stop of the first water pump and the radiator 2.
S30: and comparing the third real-time temperature with the preset temperature of the battery to control the second water pump and the radiator 2 to start or stop.
In this 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 does not always need to dissipate heat of the three. The vehicle actually senses a first real-time temperature of the driving motor and a second real-time temperature of the control module through the sensing module, senses a third real-time temperature of the power battery through the battery temperature sensing element, judges whether the current temperatures of the driving motor, the motor controller and the power battery can normally work or not through the first real-time temperature, the second real-time temperature and the third real-time temperature, and dissipates heat for corresponding parts if the temperatures are too high.
Specifically, the vehicle controller may compare the first real-time temperature with the preset motor temperature and compare the second real-time temperature with the preset control module temperature by acquiring the first real-time temperature, the second real-time temperature and the third real-time temperature, and when the first real-time temperature is greater than the preset motor temperature or the second real-time temperature is greater than the preset control module temperature, it indicates that the temperature of the motor controller or the driving motor is high 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, and the motor controller and the driving motor are cooled. When the first real-time temperature is lower than the motor preset temperature and the second real-time temperature is lower than the control module preset module, the temperature of the motor controller or the driving motor is low, 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 temperature of the battery, confirm whether the power battery needs to dissipate heat according to the magnitude relation between the third real-time temperature and the preset temperature of the battery, and control the second water pump and the radiator 2 to start or stop according to the relation. As 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 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.
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 start.
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 low, so the thermal management system 100 needs to keep the control modules of the driving motor and the motor controller at proper temperatures.
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 not suitable, and therefore the first water pump and the radiator 2 need to be controlled to start to regulate and control the temperature of the driving motor. 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, it indicates that the working temperature of the control module of the motor controller is not suitable, and therefore the first water pump and the radiator 2 need to be controlled to start, and the temperature of the motor controller needs to be adjusted.
The motor controller and the cooling water path of the driving motor are communicated with each other, so that the first water pump and the radiator 2 can be started when the temperature of any one of the motor controller and the driving motor is not suitable. Of course, when the motor controller and the driving motor both have temperatures which are not suitable, the first water pump and the radiator 2 also need to be started, so that the temperatures of the first water pump and the radiator can be regulated and controlled simultaneously. The vehicle controller is used for controlling the vehicle to run
In some embodiments, the preset battery temperature includes a maximum preset battery temperature and a minimum preset battery 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 start.
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 acquiring the third real-time temperature, the vehicle controller compares the third real-time temperature 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, which indicates that the temperature of the power battery is too high, the second water pump and the radiator 2 need to be started to radiate the power battery. If the third real-time temperature is lower than the minimum preset temperature of the battery, it indicates that the temperature of the power battery is too low, and at this time, heat dissipation is not needed, 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 kept in a proper range, and the working efficiency of the power battery is guaranteed.
In some embodiments, the vehicle further comprises an ambient temperature sensor for sensing an ambient temperature. After step S30, the vehicle control method further includes:
s33: and acquiring the ambient temperature.
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 can radiate heat and cool the cooling water in the second circuit 4, but generally can only reduce the cooling water in the second circuit 4 to almost the same temperature as 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, it is indicated that the temperature of the cooling water is higher than the working temperature of the power battery, so that the second loop 4 cannot lower the temperature of the power battery. When the second loop 4 cannot be cooled down, 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 element mounted on the engine water pipe for sensing the temperature of the coolant in the engine water pipe, and an electronic control valve 62 mounted on the engine water pipe, wherein the heat exchanger 61 is connected to the engine water pipe and the second loop 4, and the electronic control valve 62 is used for controlling the connection between the engine water pipe and the heat exchanger 61. The preset temperature of the battery comprises a maximum preset temperature and a minimum preset temperature of the battery.
Step S30 further includes:
s35: and acquiring the temperature of the cooling liquid in the water pipe of the engine.
S36: 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 62 to open.
The power battery also cannot work normally when the temperature is too low, so the thermal management system 100 needs to heat the power battery when the temperature of the power battery is too low. In this 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 exhaust gas generated after the engine does work.
Specifically, the engine needs to be cooled by the coolant after operating, and the coolant temperature can rise to a very high temperature due to the very high temperature of the engine. The vehicle controller can acquire the temperature of the coolant in the engine water pipe first, and then compare the third real-time temperature with the minimum preset temperature of the battery and the temperature of the coolant respectively, when the third real-time temperature is lower than the minimum preset temperature and the temperature of the coolant, the vehicle controller can control the second water pump and the electric control valve 62 to be opened, so that the engine coolant and the coolant in the second loop 4 exchange heat in the heat exchanger 61, so that the coolant in the second loop 4 is heated, and the heat power battery is heated through the heated coolant, so that the working temperature of the power battery is increased to a proper temperature.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent application shall be subject to the appended claims.

Claims (10)

1. A thermal management system for a vehicle, the vehicle including a body, and a motor controller, a drive motor, and a power battery disposed in the body, the motor controller having a first water channel, the drive motor having a second water channel, the power battery having a third water channel, the thermal management system comprising:
the expansion water tank is internally provided with a first cavity and a second cavity which are mutually separated, the first cavity and the second cavity are used for storing cooling water, and the first cavity and the second cavity are both 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 both 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 cavity, and the outlet port of the second radiating channel is connected with the water inlet of the second cavity; and (c) a second step of,
the water pump assembly comprises a first water pump and a second water pump;
the water outlet of the first chamber is used for being 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 used for being 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 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; the second water pump is installed on the second loop to pump the cooling water in the second chamber into the second loop.
2. The thermal management system for a vehicle according to claim 1, further comprising a heating device connected to the second circuit for heating the cooling water flowing into the power battery in the second circuit.
3. The thermal management system for a vehicle of claim 2, further comprising an engine water pipe, wherein the heating device comprises a heat exchanger and an electrically controlled valve, wherein the heat exchanger is connected to the engine water pipe and the second circuit, respectively, and the electrically controlled valve is mounted on the engine water pipe to enable hot water in the engine water pipe to flow into the heat exchanger and exchange heat with cooling water in the second circuit when the electrically controlled valve is in an open state.
4. The thermal management system for a vehicle of claim 1, wherein the radiator comprises a cooling fan, and an air outlet side of the cooling fan is disposed toward the first heat dissipation channel and the second heat dissipation channel.
5. The thermal management system for a vehicle of claim 1, further comprising a transition bracket mounted on the vehicle body, wherein a portion of the transition bracket is disposed corresponding to the first loop and another portion of the transition bracket is disposed corresponding to the second loop for fixedly mounting the first loop and the second loop, respectively.
6. A vehicle control method, the vehicle including the thermal management system according to any one of claims 1 to 5, 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 motor temperature, and comparing the second real-time temperature with a preset control module temperature to control the start or stop of the first water pump and the radiator;
and comparing the third real-time temperature with a preset temperature of a battery to control the second water pump and the radiator to start or stop.
7. The vehicle control method according to claim 6, wherein the motor preset temperature includes a motor maximum preset temperature and a motor minimum preset temperature, and the control module preset temperature includes a control module maximum preset temperature and a control module minimum preset temperature;
the step of comparing the first real-time temperature with the preset motor temperature and the step of comparing the second real-time temperature with the preset control module temperature so as to control the start or stop 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, controlling the first water pump and the radiator 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.
8. The vehicle control method according to claim 6, characterized in that the battery preset temperature includes 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 be started;
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.
9. The vehicle control method according to claim 6, 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 the preset temperature of the battery 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.
10. The vehicle control method according to claim 6, 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 the temperature of the coolant in the engine water pipe, and an electronic control valve mounted on the engine water pipe, wherein the heat exchanger is connected to the engine water pipe and the second loop, respectively, and the electronic control valve is used for controlling the connection part of the engine water pipe and the heat exchanger to be opened and closed; the preset temperature of the battery comprises a maximum preset temperature of the battery and a minimum preset temperature of the battery;
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.
CN202211010174.7A 2022-08-23 2022-08-23 Vehicle control method Active CN115366658B (en)

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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
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* 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
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