CN117621807A - Vehicle thermal management method, device, equipment and storage medium - Google Patents
Vehicle thermal management method, device, equipment and storage medium Download PDFInfo
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- CN117621807A CN117621807A CN202311726817.2A CN202311726817A CN117621807A CN 117621807 A CN117621807 A CN 117621807A CN 202311726817 A CN202311726817 A CN 202311726817A CN 117621807 A CN117621807 A CN 117621807A
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- 238000007726 management method Methods 0.000 title claims abstract description 83
- 238000011084 recovery Methods 0.000 claims description 212
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 58
- 238000001816 cooling Methods 0.000 claims description 45
- 238000004378 air conditioning Methods 0.000 claims description 22
- 239000003507 refrigerant Substances 0.000 claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 21
- 238000011217 control strategy Methods 0.000 claims description 20
- 239000000110 cooling liquid Substances 0.000 claims description 19
- 238000004891 communication Methods 0.000 claims description 12
- 239000002826 coolant Substances 0.000 claims description 10
- 238000010521 absorption reaction Methods 0.000 claims description 9
- 230000036541 health Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 description 17
- 230000001276 controlling effect Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 6
- 238000004364 calculation method Methods 0.000 description 4
- 230000003993 interaction Effects 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
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- 230000001105 regulatory effect Effects 0.000 description 2
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
- B60K11/04—Arrangement or mounting of radiators, radiator shutters, or radiator blinds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
- B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/425—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/545—Temperature
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention relates to the technical field of vehicle control, in particular to a vehicle thermal management method, a device, equipment and a storage medium.
Description
Technical Field
The present invention relates to the field of vehicle control technologies, and in particular, to a vehicle thermal management method, device, apparatus, and storage medium.
Background
At present, most new energy automobiles are provided with a power recovery system, kinetic energy is converted into electric energy through the system to be recovered and stored in a power battery when the automobile slides or brakes, the energy can be reused for normal running of the automobile, so that energy consumption and mileage anxiety of the electric automobile are greatly reduced, but under the conditions of low temperature and high SOC of the battery, the energy recovery capacity of the automobile is very low, the recovery capacity is weakened under the sliding or braking working condition of the automobile, and the recovered energy can only be consumed on friction torque of a brake disc, so that a large amount of recovered energy waste occurs.
The foregoing is provided merely for the purpose of facilitating understanding of the technical solutions of the present invention and is not intended to represent an admission that the foregoing is prior art.
Disclosure of Invention
The invention mainly aims to provide a vehicle thermal management method, device, equipment and storage medium, which aim to solve the technical problem of low vehicle kinetic energy recovery efficiency in the extreme environment in the prior art.
To achieve the above object, the present invention provides a vehicle thermal management method applied to a thermal management apparatus including: the electric drive cooling circuit comprises a first water pump, an electromagnetic three-way valve, a four-way valve and an electric drive loop Lu Huanre device, wherein the electric drive cooling circuit is connected with the refrigerant circuit through the electric drive loop heat exchanger, the electric drive cooling circuit is connected with the battery cooling circuit through the four-way valve, the electromagnetic three-way valve is used for adjusting the water path flow direction of the electric drive cooling circuit, the refrigerant circuit comprises a water-cooling heat exchanger, the refrigerant circuit is connected with the warm air cooling circuit through the water-cooling heat exchanger, the battery cooling circuit comprises a second water pump and a battery, and the second water pump is used for controlling the water flow in the battery cooling circuit so as to heat the battery;
The method comprises the following steps:
acquiring vehicle state parameters, battery state parameters and electric drive loop parameters of a target vehicle;
determining a heat recovery mode of the vehicle based on at least one of the vehicle state parameter, battery state parameter, and electric drive circuit parameter;
and controlling the operation state of the thermal management equipment according to the control strategy corresponding to the heat recovery mode.
Optionally, the determining the heat recovery mode of the vehicle according to at least one of the vehicle state parameter, the battery state parameter, and the electric drive loop parameter includes:
generating a battery recovery ratio according to the battery state parameter and the vehicle state parameter;
when the battery recovery ratio is smaller than a preset ratio threshold value, judging that the battery of the target vehicle is in a low recovery state;
controlling the electric drive loop to operate in a low recovery state;
and determining the heat recovery mode of the vehicle according to the proportion interval in which the battery recovery proportion is located.
Optionally, the determining the heat recovery mode of the vehicle according to the proportion interval in which the battery recovery proportion is located includes:
determining that the vehicle is operating in a first heat recovery mode when the battery recovery ratio is in a first efficiency interval;
Determining that the vehicle is operating in a second heat recovery mode when the battery recovery ratio is in a second efficiency interval, the minimum value of the second efficiency interval being greater than the maximum value of the first efficiency interval;
and determining that the vehicle is operated in a third heat recovery mode when the battery recovery ratio is in a third efficiency interval, wherein the minimum value of the third efficiency interval is greater than the maximum value of the second efficiency interval.
Optionally, the vehicle state parameters include a vehicle speed, an accelerator pedal opening, a brake pedal opening and a motor rotation speed, and the battery state parameters include a battery health state and a battery cell temperature;
the generating a battery recovery ratio according to the battery state parameter and the vehicle state parameter includes:
calculating the battery recovery power according to the battery health state and the battery core temperature;
calculating vehicle recovery torque according to the vehicle speed, the accelerator pedal opening and the brake pedal opening;
calculating vehicle recovery power according to the vehicle recovery torque and the motor rotation speed;
and generating a battery recovery ratio according to the battery recovery power and the vehicle recovery power.
Optionally, the electric drive circuit parameters include a temperature of a cooling fluid in the electric drive circuit;
The determining the heat recovery mode of the vehicle according to at least one of the vehicle state parameter, the battery state parameter, and the electric drive circuit parameter further includes:
driving the vehicle to operate in a second heat recovery mode when a heating demand exists in an air conditioning system of the vehicle and the temperature of the cooling liquid is greater than a first temperature threshold;
determining a temperature difference between the coolant temperature and the battery cell temperature in the absence of a heating demand in a vehicle air conditioning system;
and driving the vehicle to operate in a third heat recovery mode when the temperature difference is greater than a second temperature threshold and the cell temperature is less than a rated battery heating temperature.
Optionally, the controlling the operation state of the thermal management device according to the control strategy corresponding to the heat recovery mode includes:
according to the control strategy corresponding to the heat recovery mode, the communication state of the electromagnetic three-way valve and the four-way valve is adjusted; and/or
And adjusting the running state of the first water pump and/or the second water pump according to the control strategy corresponding to the heat recovery mode.
Optionally, the vehicle thermal management method further comprises:
when the heat recovery mode is a first heat recovery mode, a first gating end of the three-way valve and a second gating end of the three-way valve are communicated, a first gating end of the four-way valve and a second gating end of the four-way valve are communicated, a third gating end of the four-way valve and a fourth gating end of the four-way valve are communicated, and the first water pump is controlled to operate at a first rotation speed;
When the heat recovery mode is a second heat recovery mode, a first gating end of the three-way valve and a second gating end of the three-way valve, a first gating end of the four-way valve and a second gating end of the four-way valve are communicated, a third gating end of the four-way valve and a fourth gating end of the four-way valve are communicated, the first water pump is controlled to operate at a first rotating speed, and the air conditioning loop is controlled to operate in an electric drive heat absorption mode;
when the heat recovery mode is a third heat recovery mode, the first gating end of the three-way valve and the second gating end of the three-way valve, the first gating end of the four-way valve and the fourth gating end of the four-way valve are communicated, the third gating end of the four-way valve and the second gating end of the four-way valve are communicated, the first water pump is controlled to operate at a second rotating speed, the second water pump is controlled to operate at a third rotating speed, and the air conditioning loop is controlled to operate in a battery heat absorption mode, wherein the first rotating speed is smaller than the third rotating speed, and the third rotating speed is smaller than the second rotating speed.
In addition, in order to achieve the above object, the present invention also proposes a vehicle thermal management device applied to a thermal management apparatus including: the electric drive cooling circuit comprises a first water pump, an electromagnetic three-way valve, a four-way valve and an electric drive loop Lu Huanre device, wherein the electric drive cooling circuit is connected with the refrigerant circuit through the electric drive loop heat exchanger, the electric drive cooling circuit is connected with the battery cooling circuit through the four-way valve, the electromagnetic three-way valve is used for adjusting the water path flow direction of the electric drive cooling circuit, the refrigerant circuit comprises a water-cooling heat exchanger, the refrigerant circuit is connected with the warm air cooling circuit through the water-cooling heat exchanger, the battery cooling circuit comprises a second water pump and a battery, and the second water pump is used for controlling the water flow in the battery cooling circuit so as to heat the battery;
The vehicle heat management apparatus includes:
the acquisition module is used for acquiring vehicle state parameters, battery state parameters and electric drive loop parameters of the target vehicle;
a determination module for determining a heat recovery mode of the vehicle based on at least one of the vehicle state parameter, a battery state parameter, and an electric drive circuit parameter;
and the control module is used for controlling the operation state of the thermal management equipment according to the control strategy corresponding to the heat recovery mode.
In addition, to achieve the above object, the present invention also proposes a vehicle thermal management apparatus including: a memory, a processor, and a vehicle thermal management program stored on the memory and executable on the processor, the vehicle thermal management program configured to implement the steps of the vehicle thermal management method as described above.
In addition, to achieve the above object, the present invention also proposes a storage medium having stored thereon a vehicle thermal management program which, when executed by a processor, implements the steps of the vehicle thermal management method as described above.
The invention discloses a vehicle thermal management method, which comprises the following steps: acquiring vehicle state parameters, battery state parameters and electric drive loop parameters of a target vehicle; determining a heat recovery mode of the vehicle based on at least one of the vehicle state parameter, battery state parameter, and electric drive circuit parameter; compared with the prior art, the method and the device for controlling the operation states of the heat management equipment according to the control strategy corresponding to the heat recovery mode determine the heat recovery mode of the vehicle according to the vehicle state parameter, the battery state parameter and the electric drive loop parameter of the target vehicle, so that the method and the device are suitable for different environments, and the operation states of all elements in the heat management equipment of the vehicle are controlled according to the heat recovery mode and the control strategy corresponding to the environments under different environments, so that the technical problem of low kinetic energy recovery efficiency of the vehicle under extreme environments in the prior art is avoided.
Drawings
FIG. 1 is a schematic diagram of a vehicle thermal management device of a hardware operating environment in accordance with an embodiment of the present invention;
FIG. 2 is a flow chart of a first embodiment of a vehicle thermal management method according to the present invention;
FIG. 3 is a schematic diagram illustrating a battery recharging power-core temperature map according to an embodiment of a vehicle thermal management method of the present invention;
FIG. 4 is a schematic diagram of a thermal management device according to an embodiment of a vehicle thermal management method of the present invention;
FIG. 5 is a schematic diagram illustrating interaction of a thermal management control device according to an embodiment of a vehicle thermal management method of the present invention;
FIG. 6 is a flow chart of a second embodiment of a vehicle thermal management method according to the present invention;
FIG. 7 is a schematic diagram of a predetermined torque-efficiency ratio of an embodiment of a vehicle thermal management method according to the present invention;
FIG. 8 is a schematic illustration of a thermal management flow according to an embodiment of a method for thermal management of a vehicle of the present invention;
fig. 9 is a block diagram showing the construction of a first embodiment of the vehicle heat management apparatus of the present invention.
Reference numerals illustrate:
the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle thermal management device in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the vehicle thermal management apparatus may include: a processor 1001, such as a central processing unit (Central Processing Unit, CPU), a communication bus 1002, a user interface 1003, a network interface 1004, a memory 1005. Wherein the communication bus 1002 is used to enable connected communication between these components. The user interface 1003 may include a Display, an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may further include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a Wireless interface (e.g., a Wireless-Fidelity (Wi-Fi) interface). The Memory 1005 may be a high-speed random access Memory (Random Access Memory, RAM) or a stable nonvolatile Memory (NVM), such as a disk Memory. The memory 1005 may also optionally be a storage device separate from the processor 1001 described above.
It will be appreciated by those skilled in the art that the structure shown in fig. 1 does not constitute a limitation of the vehicle thermal management device, and may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.
As shown in fig. 1, an operating system, a network communication module, a user interface module, and a vehicle thermal management program may be included in the memory 1005 as one type of storage medium.
In the vehicle thermal management apparatus shown in fig. 1, the network interface 1004 is mainly used for data communication with a network server; the user interface 1003 is mainly used for data interaction with a user; the processor 1001 and the memory 1005 in the vehicle thermal management apparatus of the present invention may be provided in a vehicle thermal management apparatus that invokes a vehicle thermal management program stored in the memory 1005 through the processor 1001 and executes the vehicle thermal management method provided by the embodiment of the present invention.
An embodiment of the invention provides a vehicle thermal management method, referring to fig. 2, fig. 2 is a schematic flow chart of a first embodiment of the vehicle thermal management method of the invention.
In this embodiment, the vehicle thermal management method includes the steps of:
step S10: vehicle state parameters, battery state parameters, and electric drive circuit parameters of the target vehicle are obtained.
It should be noted that, the execution body of the method of this embodiment may be a device having functions of data processing, data acquisition, program running, and the like, for example: the vehicle-mounted computer, or the controller in the vehicle, may be any other device capable of realizing the same or similar functions, and this embodiment is not particularly limited, and in this embodiment and the following embodiments, the controller in the vehicle will be described as an example.
It should be noted that, the basic principle of the power recovery system is that during the sliding or braking process, the vehicle controller requests the motor to output negative torque to realize vehicle energy recovery, the energy recovery intensity is limited by the allowable charging power of the battery, the recharging power of the battery is generally related to the SOC and the cell temperature, as shown in fig. 3, the battery is under the low temperature and high SOC condition, at this time, the vehicle energy recovery capability is very low, and the recovery capability is weakened under the sliding or braking condition of the vehicle, and a large amount of energy can only be consumed on the friction torque of the brake disc.
In order to solve the above-described problems, referring to fig. 4, the present embodiment proposes a thermal management apparatus provided in a vehicle including: the electric drive cooling circuit comprises a kettle 1, a first water pump 2, an alternating current-direct current converter 3, a rear electric drive 4, a front electric drive 5, an electromagnetic three-way valve 6, a radiator 7, an electric drive circuit heat exchanger 8 and a four-way valve 9; the battery cooling liquid loop comprises a water pump 11, a battery 10 and a four-way valve 9; the warm air cooling liquid loop comprises a water pump 18, a water-cooled condenser 13, an electric heater 16 and a warm air core 17; the refrigerant circuit includes a compressor 12, a water cooled condenser 13, an electronic expansion valve 14, an external heat exchanger 15, and an electric drive circuit heat exchanger 8.
In a specific implementation, the recharging power of the battery is generally related to the SOC and the battery cell temperature, and in an extreme environment, in order to improve the recharging power of the battery, the embodiment can improve the battery cell temperature, so that the battery cell temperature is in a relatively suitable range, when the battery cell temperature is adjusted, the operation of a compressor of a refrigerant loop can be performed, so that a high-temperature and high-pressure refrigerant can perform heat exchange with an electric drive cooling liquid loop through an electric drive loop heat exchanger 8, and then the battery cell temperature of the battery is improved and the energy recovery efficiency is improved through the battery cooling liquid loop.
In addition, the high-temperature and high-pressure refrigerant can also exchange heat through the water-cooled condenser 13 in the warm air cooling liquid loop, so that redundant heat is supplied to the interior of the vehicle for heating or refrigerating, the temperature in the interior of the vehicle cabin is regulated, and the energy recovery efficiency and the user experience are improved.
The thermal management control device in this embodiment further includes a vehicle control unit VCU, a battery management system BMS, an electric drive controller MCU, an air conditioning system AC, a thermal management system execution end, and the interaction relationship between the systems is referred to fig. 5.
In addition, the temperature of the electric drive of the vehicle can be controlled through the electric drive loop heat exchanger 8 in the electric drive cooling liquid loop, so that when the temperature is lower in winter, the vehicle is warmed up, the energy consumption of the vehicle is reduced, under the scene, when the first gating end and the second gating end of the three-way valve are communicated, the cooling liquid temperature in the electric drive loop can be reduced through the external heat exchanger by the refrigerant, so that the temperature of the electric drive of the whole vehicle is controlled, and if the second gating end and the third gating end of the electromagnetic three-way valve are communicated, the whole electric drive loop can be kept in a state with proper temperature, and the running stability of the vehicle is kept.
It is to be appreciated that vehicle state parameters include, but are not limited to, vehicle speed, accelerator pedal opening, brake pedal opening, and motor speed; the battery state parameters include, but are not limited to, battery state of health and cell temperature; the electric drive circuit parameters include a temperature of a coolant in the electric drive circuit.
Step S20: a heat recovery mode of the vehicle is determined based on at least one of the vehicle state parameter, the battery state parameter, and the electric drive circuit parameter.
It should be noted that, in the present embodiment, the heat recovery modes of the vehicle include three modes, i.e., a first heat recovery mode, a second heat recovery mode, and a third heat recovery mode, where the first heat recovery mode mainly recovers excessive heat through the electric drive cooling circuit; the second heat recovery mode mainly recovers excessive heat for heating in the cabin through an air conditioning system; the third heat recovery mode is mainly to recover excess heat through the battery.
Step S30: and controlling the operation state of the thermal management equipment according to the control strategy corresponding to the heat recovery mode.
It can be understood that the control strategies corresponding to the different control modes are different to achieve different heat recovery effects, and the operation states of the heat management device are mainly at least one of the communication state of the electromagnetic three-way valve, the communication state of the four-way valve, the operation state of the first water pump and the operation state of the second water pump.
According to the embodiment, the heat recovery mode of the vehicle is determined according to the vehicle state parameter, the battery state parameter and the electric drive loop parameter of the target vehicle, so that the vehicle is suitable for different environments, the running states of all elements in the vehicle heat management equipment are controlled according to the heat recovery mode and the control strategy corresponding to the environments in different environments, and the technical problem of low vehicle kinetic energy recovery efficiency in the extreme environments in the prior art is avoided.
Referring to fig. 6, fig. 6 is a flowchart illustrating a second embodiment of a vehicle thermal management method according to the present invention.
Based on the first embodiment, in this embodiment, the step S20 includes:
step S201: and generating a battery recovery ratio according to the battery state parameter and the vehicle state parameter.
The low battery recovery ratio means that the vehicle has low energy recovery efficiency, and the battery is in a low energy recovery state, and it is necessary to increase the energy recovery efficiency by other means.
In order to calculate an accurate battery recycling ratio, the generating a battery recycling ratio according to the battery state parameter and the vehicle state parameter includes:
calculating the battery recovery power according to the battery health state and the battery core temperature;
Calculating vehicle recovery torque according to the vehicle speed, the accelerator pedal opening and the brake pedal opening;
calculating vehicle recovery power according to the vehicle recovery torque and the motor rotation speed;
and generating a battery recovery ratio according to the battery recovery power and the vehicle recovery power.
In a specific implementation, the calculation formula of the battery recovery power is as follows:
Pbat＝f(SOC，Tbat)
f () is obtained based on the test result fitting of the battery rack, SOC is the battery electric quantity, and Tbat is the battery temperature.
The calculation formula of the vehicle recovery torque is:
where V is the vehicle speed of the vehicle,is the opening degree of an accelerator pedal,>is the opening of the brake pedal;
the calculation formula of the vehicle recovered power is as follows:
Pveh＝Tveh*n/9550
where n is the motor speed and Tveh is the vehicle recovery torque.
The calculation formula of the battery recovery ratio is as follows:
δ＝Pbat/Pveh
where Pbat is battery recovered power and Pveh is vehicle recovered power.
Step S202: and when the battery recovery ratio is smaller than a preset ratio threshold value, judging that the battery of the target vehicle is in a low recovery state.
It is understood that the preset ratio threshold may be set to 90%, i.e., if the battery recovery ratio is <90%, it may be determined that the battery is in a low recovery state.
Step S203: the electric drive circuit is controlled to operate in a low recovery state.
In a specific implementation, controlling the electric drive loop to operate in the low recovery state refers to sending a request of the low-efficiency power state to the electric drive, so that the electric drive is operated at a low-efficiency operating point under the condition of ensuring the driving torque, in this embodiment, the working efficiency of the electric drive can be divided into three working intervals of [60%,70% ], [70%,80% ], and [80%,90% ], and the efficiency interval of the electric drive can be set by referring to a preset torque-efficiency chart, wherein the preset torque-efficiency chart can be referred to fig. 7.
Step S204: and determining the heat recovery mode of the vehicle according to the proportion interval in which the battery recovery proportion is located.
It should be appreciated that the first heat recovery mode is primarily to recover excess heat through the electrically driven cooling circuit; the second heat recovery mode mainly recovers excessive heat for heating in the cabin through an air conditioning system; the third heat recovery mode is mainly to recover excess heat through the battery.
Further, the determining the heat recovery mode of the vehicle according to the proportion interval in which the battery recovery proportion is located includes:
determining that the vehicle is operating in a first heat recovery mode when the battery recovery ratio is in a first efficiency interval;
Determining that the vehicle is operating in a second heat recovery mode when the battery recovery ratio is in a second efficiency interval, the minimum value of the second efficiency interval being greater than the maximum value of the first efficiency interval;
and determining that the vehicle is operated in a third heat recovery mode when the battery recovery ratio is in a third efficiency interval, wherein the minimum value of the third efficiency interval is greater than the maximum value of the second efficiency interval.
In a specific implementation, the battery recovery ratio can be divided into three working sections of 3 gears [0, δ1 ], [ δ1, δ2], (δ2, 90%) and the working efficiency of the corresponding electric drive is divided into [60%,70% ], [70%,80% ], and [80%,90% ].
Further, the electric drive circuit parameters include a coolant temperature in the electric drive circuit;
the determining the heat recovery mode of the vehicle according to at least one of the vehicle state parameter, the battery state parameter, and the electric drive circuit parameter further includes:
driving the vehicle to operate in a second heat recovery mode when a heating demand exists in an air conditioning system of the vehicle and the temperature of the cooling liquid is greater than a first temperature threshold;
determining a temperature difference between the coolant temperature and the battery cell temperature in the absence of a heating demand in a vehicle air conditioning system;
And driving the vehicle to operate in a third heat recovery mode when the temperature difference is greater than a second temperature threshold and the cell temperature is less than a rated battery heating temperature.
It is understood that the first temperature threshold may be set to 0 ℃ and the second temperature threshold may be set to 5 ℃, which is not particularly limited in this embodiment.
In a specific implementation, referring to fig. 8, the air conditioner will heat the request and the coolant temperature TCOOLANT >0 ℃, driving the vehicle to operate in a second heat recovery mode; when the air conditioner does not need to recover the electric drive heat, judging whether a battery recovery mode reaches a condition, and when the temperature of the cooling liquid TCOOLANT-Tbat is more than 5 ℃ and the temperature of the battery core Tbat is less than the rated battery heating temperature T0, driving the vehicle to operate in a third heat recovery mode, wherein T0 refers to the upper limit value of the battery heating temperature, and entering the third heat recovery mode, namely the battery recovery mode after the condition is met.
Further, the vehicle thermal management method further includes:
when the heat recovery mode is a first heat recovery mode, a first gating end of the three-way valve and a second gating end of the three-way valve are communicated, a first gating end of the four-way valve and a second gating end of the four-way valve are communicated, a third gating end of the four-way valve and a fourth gating end of the four-way valve are communicated, and the first water pump is controlled to operate at a first rotation speed;
When the heat recovery mode is a second heat recovery mode, a first gating end of the three-way valve and a second gating end of the three-way valve, a first gating end of the four-way valve and a second gating end of the four-way valve are communicated, a third gating end of the four-way valve and a fourth gating end of the four-way valve are communicated, the first water pump is controlled to operate at a first rotating speed, and the air conditioning loop is controlled to operate in an electric drive heat absorption mode;
when the heat recovery mode is a third heat recovery mode, the first gating end of the three-way valve and the second gating end of the three-way valve, the first gating end of the four-way valve and the fourth gating end of the four-way valve are communicated, the third gating end of the four-way valve and the second gating end of the four-way valve are communicated, the first water pump is controlled to operate at a second rotating speed, the second water pump is controlled to operate at a third rotating speed, and the air conditioning loop is controlled to operate in a battery heat absorption mode, wherein the first rotating speed is smaller than the third rotating speed, and the third rotating speed is smaller than the second rotating speed.
In a specific implementation, in a first heat recovery mode, the three-way valve 6 is connected with the (2) (1) channel, the water pump 2 operates according to 60%, the four-way valve 9(1) (2)/(3) (4) is communicated, and at the moment, the electric drive waterway can recover redundant heat; in the second heat recovery mode, the three-way valve 6 is in a (2) (1) passage, the water pump 2 runs according to 60%, the four-way valve 9(1) (2)/(3) (4) is communicated, the air conditioner enters an electric heat-driven heat absorption mode, the compressor 12 and the electronic expansion valve 14 work according to the request, and the air conditioning system can recover redundant heat for heating in the vehicle cabin; in the third heat recovery mode, the three-way valve 6 is in the (2) (1) path, the water pump 2 is operated according to 90%, the water pump 11 is operated according to 70%, and the four-way valve 9(1) (4)/(3) (2) is in a communicated state, so that the battery can recover redundant heat.
According to the embodiment, the battery recovery proportion is calculated to judge the working efficiency of the electric drive of the vehicle, so that the heat recovery mode of the vehicle is judged, and the heat recovery mode of the vehicle can be further determined by the temperature of the cooling liquid in the electric drive loop and whether the air conditioner has a heating requirement or not, so that the heat recovery efficiency of the vehicle is improved, the use requirement of a user is met, and the comfort is improved.
In addition, the embodiment of the invention also provides a storage medium, wherein the storage medium is stored with a vehicle thermal management program, and the vehicle thermal management program realizes the steps of the vehicle thermal management method when being executed by a processor.
Because the storage medium adopts all the technical schemes of all the embodiments, the storage medium has at least all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted here.
Referring to fig. 9, fig. 9 is a block diagram showing the structure of a first embodiment of a vehicle thermal management device according to the present invention.
As shown in fig. 9, a vehicle thermal management device according to an embodiment of the present invention includes:
an acquisition module 10 for acquiring vehicle state parameters, battery state parameters, and electric drive circuit parameters of a target vehicle.
It should be noted that, the basic principle of the power recovery system is that during the sliding or braking process, the vehicle controller requests the motor to output negative torque to realize vehicle energy recovery, the energy recovery intensity is limited by the allowable charging power of the battery, the recharging power of the battery is generally related to the SOC and the cell temperature, as shown in fig. 3, the battery is under the low temperature and high SOC condition, at this time, the vehicle energy recovery capability is very low, and the recovery capability is weakened under the sliding or braking condition of the vehicle, and a large amount of energy can only be consumed on the friction torque of the brake disc.
In order to solve the above-described problems, referring to fig. 3, the present embodiment proposes a thermal management apparatus provided in a vehicle including: the electric drive cooling circuit comprises a kettle 1, a first water pump 2, an alternating current-direct current converter 3, a rear electric drive 4, a front electric drive 5, an electromagnetic three-way valve 6, a radiator 7, an electric drive circuit heat exchanger 8 and a four-way valve 9; the battery cooling liquid loop comprises a water pump 11, a battery 10 and a four-way valve 9; the warm air cooling liquid loop comprises a water pump 18, a water-cooled condenser 13, an electric heater 16 and a warm air core 17; the refrigerant circuit includes a compressor 12, a water cooled condenser 13, an electronic expansion valve 14, an external heat exchanger 15, and an electric drive circuit heat exchanger 8.
In a specific implementation, the recharging power of the battery is generally related to the SOC and the battery cell temperature, and in an extreme environment, in order to improve the recharging power of the battery, the embodiment can improve the battery cell temperature, so that the battery cell temperature is in a relatively suitable range, when the battery cell temperature is adjusted, the operation of a compressor of a refrigerant loop can be performed, so that a high-temperature and high-pressure refrigerant can perform heat exchange with an electric drive cooling liquid loop through an electric drive loop heat exchanger 8, and then the battery cell temperature of the battery is improved and the energy recovery efficiency is improved through the battery cooling liquid loop.
In addition, the high-temperature and high-pressure refrigerant can also exchange heat through the water-cooled condenser 13 in the warm air cooling liquid loop, so that redundant heat is supplied to the interior of the vehicle for heating or refrigerating, the temperature in the interior of the vehicle cabin is regulated, and the energy recovery efficiency and the user experience are improved.
The thermal management control apparatus in this embodiment further includes a vehicle control unit VCU, a battery management system BMS, an electric drive controller MCU, an air conditioning system AC, a thermal management system execution terminal, and the interaction relationship of the systems is referred to fig. 4.
In addition, the temperature of the electric drive of the vehicle can be controlled through the electric drive loop heat exchanger 8 in the electric drive cooling liquid loop, so that when the temperature is lower in winter, the vehicle is warmed up, the energy consumption of the vehicle is reduced, under the scene, when the first gating end and the second gating end of the three-way valve are communicated, the cooling liquid temperature in the electric drive loop can be reduced through the external heat exchanger by the refrigerant, so that the temperature of the electric drive of the whole vehicle is controlled, and if the second gating end and the third gating end of the electromagnetic three-way valve are communicated, the whole electric drive loop can be kept in a state with proper temperature, and the running stability of the vehicle is kept.
It is to be appreciated that vehicle state parameters include, but are not limited to, vehicle speed, accelerator pedal opening, brake pedal opening, and motor speed; the battery state parameters include, but are not limited to, battery state of health and cell temperature; the electric drive circuit parameters include a temperature of a coolant in the electric drive circuit.
A determination module 20 for determining a heat recovery mode of the vehicle based on at least one of the vehicle state parameter, the battery state parameter, and the electric drive circuit parameter.
It should be noted that, in the present embodiment, the heat recovery modes of the vehicle include three modes, i.e., a first heat recovery mode, a second heat recovery mode, and a third heat recovery mode, where the first heat recovery mode mainly recovers excessive heat through the electric drive cooling circuit; the second heat recovery mode mainly recovers excessive heat for heating in the cabin through an air conditioning system; the third heat recovery mode is mainly to recover excess heat through the battery.
And the control module 30 is used for controlling the operation state of the thermal management device according to the control strategy corresponding to the heat recovery mode.
It can be understood that the control strategies corresponding to the different control modes are different to achieve different heat recovery effects, and the operation states of the heat management device are mainly at least one of the communication state of the electromagnetic three-way valve, the communication state of the four-way valve, the operation state of the first water pump and the operation state of the second water pump.
In an embodiment, the determining module 20 is further configured to generate a battery recycling ratio according to the battery status parameter and the vehicle status parameter; when the battery recovery ratio is smaller than a preset ratio threshold value, judging that the battery of the target vehicle is in a low recovery state; controlling the electric drive loop to operate in a low recovery state; and determining the heat recovery mode of the vehicle according to the proportion interval in which the battery recovery proportion is located.
In an embodiment, the determining module 20 is further configured to determine that the vehicle is operating in a first heat recovery mode when the battery recovery ratio is in a first efficiency interval; determining that the vehicle is operating in a second heat recovery mode when the battery recovery ratio is in a second efficiency interval, the minimum value of the second efficiency interval being greater than the maximum value of the first efficiency interval; and determining that the vehicle is operated in a third heat recovery mode when the battery recovery ratio is in a third efficiency interval, wherein the minimum value of the third efficiency interval is greater than the maximum value of the second efficiency interval.
In one embodiment, the determining module 20 is further configured to calculate a battery recovery power according to the battery state of health and the battery cell temperature; calculating vehicle recovery torque according to the vehicle speed, the accelerator pedal opening and the brake pedal opening; calculating vehicle recovery power according to the vehicle recovery torque and the motor rotation speed; and generating a battery recovery ratio according to the battery recovery power and the vehicle recovery power.
In one embodiment, the determining module 20 is further configured to drive the vehicle to operate in the second heat recovery mode when a heating demand exists in the vehicle air conditioning system and the coolant temperature is greater than a first temperature threshold; determining a temperature difference between the coolant temperature and the battery cell temperature in the absence of a heating demand in a vehicle air conditioning system; and driving the vehicle to operate in a third heat recovery mode when the temperature difference is greater than a second temperature threshold and the cell temperature is less than a rated battery heating temperature.
In an embodiment, the control module 30 is further configured to adjust a communication state between the electromagnetic three-way valve and the four-way valve according to a control strategy corresponding to the heat recovery mode; and/or adjusting the running state of the first water pump and/or the second water pump according to the control strategy corresponding to the heat recovery mode.
In an embodiment, the control module 30 is further configured to, when the heat recovery mode is a first heat recovery mode, communicate a first gate end of the three-way valve with a second gate end of the three-way valve, communicate a first gate end of the four-way valve with a second gate end of the four-way valve, communicate a third gate end of the four-way valve with a fourth gate end of the four-way valve, and control the first water pump to operate at a first rotational speed; when the heat recovery mode is a second heat recovery mode, a first gating end of the three-way valve and a second gating end of the three-way valve, a first gating end of the four-way valve and a second gating end of the four-way valve are communicated, a third gating end of the four-way valve and a fourth gating end of the four-way valve are communicated, the first water pump is controlled to operate at a first rotating speed, and the air conditioning loop is controlled to operate in an electric drive heat absorption mode; when the heat recovery mode is a third heat recovery mode, the first gating end of the three-way valve and the second gating end of the three-way valve, the first gating end of the four-way valve and the fourth gating end of the four-way valve are communicated, the third gating end of the four-way valve and the second gating end of the four-way valve are communicated, the first water pump is controlled to operate at a second rotating speed, the second water pump is controlled to operate at a third rotating speed, and the air conditioning loop is controlled to operate in a battery heat absorption mode, wherein the first rotating speed is smaller than the third rotating speed, and the third rotating speed is smaller than the second rotating speed.
According to the embodiment, the heat recovery mode of the vehicle is determined according to the vehicle state parameter, the battery state parameter and the electric drive loop parameter of the target vehicle, so that the vehicle is suitable for different environments, the running states of all elements in the vehicle heat management equipment are controlled according to the heat recovery mode and the control strategy corresponding to the environments in different environments, and the technical problem of low vehicle kinetic energy recovery efficiency in the extreme environments in the prior art is avoided.
It should be understood that the foregoing is illustrative only and is not limiting, and that in specific applications, those skilled in the art may set the invention as desired, and the invention is not limited thereto.
It should be noted that the above-described working procedure is merely illustrative, and does not limit the scope of the present invention, and in practical application, a person skilled in the art may select part or all of them according to actual needs to achieve the purpose of the embodiment, which is not limited herein.
In addition, technical details that are not described in detail in this embodiment may be referred to the vehicle thermal management method provided in any embodiment of the present invention, and will not be described herein.
Furthermore, it should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. Read Only Memory)/RAM, magnetic disk, optical disk) and including several instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method according to the embodiments of the present invention.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.
Claims (10)
1. A vehicle thermal management method, characterized in that the vehicle thermal management method is applied to a thermal management apparatus comprising: the electric drive cooling circuit comprises a first water pump, an electromagnetic three-way valve, a four-way valve and an electric drive loop Lu Huanre device, wherein the electric drive cooling circuit is connected with the refrigerant circuit through the electric drive loop heat exchanger, the electric drive cooling circuit is connected with the battery cooling circuit through the four-way valve, the electromagnetic three-way valve is used for adjusting the water path flow direction of the electric drive cooling circuit, the refrigerant circuit comprises a water-cooling heat exchanger, the refrigerant circuit is connected with the warm air cooling circuit through the water-cooling heat exchanger, the battery cooling circuit comprises a second water pump and a battery, and the second water pump is used for controlling the water flow in the battery cooling circuit so as to heat the battery;
The vehicle thermal management method includes:
acquiring vehicle state parameters, battery state parameters and electric drive loop parameters of a target vehicle;
determining a heat recovery mode of the vehicle based on at least one of the vehicle state parameter, battery state parameter, and electric drive circuit parameter;
and controlling the operation state of the thermal management equipment according to the control strategy corresponding to the heat recovery mode.
2. The vehicle thermal management method of claim 1, wherein the determining the heat recovery mode of the vehicle based on at least one of the vehicle state parameter, battery state parameter, and electric drive circuit parameter comprises:
generating a battery recovery ratio according to the battery state parameter and the vehicle state parameter;
when the battery recovery ratio is smaller than a preset ratio threshold value, judging that the battery of the target vehicle is in a low recovery state;
controlling the electric drive loop to operate in a low recovery state;
and determining the heat recovery mode of the vehicle according to the proportion interval in which the battery recovery proportion is located.
3. The vehicle thermal management method according to claim 2, wherein the determining the heat recovery mode of the vehicle from the proportion interval in which the battery recovery proportion is located includes:
Determining that the vehicle is operating in a first heat recovery mode when the battery recovery ratio is in a first efficiency interval;
determining that the vehicle is operating in a second heat recovery mode when the battery recovery ratio is in a second efficiency interval, the minimum value of the second efficiency interval being greater than the maximum value of the first efficiency interval;
and determining that the vehicle is operated in a third heat recovery mode when the battery recovery ratio is in a third efficiency interval, wherein the minimum value of the third efficiency interval is greater than the maximum value of the second efficiency interval.
4. The vehicle thermal management method of claim 2, wherein the vehicle state parameters include vehicle speed, accelerator pedal opening, brake pedal opening, and motor speed, the battery state parameters include battery state of health and battery cell temperature;
the generating a battery recovery ratio according to the battery state parameter and the vehicle state parameter includes:
calculating the battery recovery power according to the battery health state and the battery core temperature;
calculating vehicle recovery torque according to the vehicle speed, the accelerator pedal opening and the brake pedal opening;
calculating vehicle recovery power according to the vehicle recovery torque and the motor rotation speed;
And generating a battery recovery ratio according to the battery recovery power and the vehicle recovery power.
5. The vehicle thermal management method of claim 2, wherein the electric drive circuit parameters include a coolant temperature in the electric drive circuit;
the determining the heat recovery mode of the vehicle according to at least one of the vehicle state parameter, the battery state parameter, and the electric drive circuit parameter further includes:
driving the vehicle to operate in a second heat recovery mode when a heating demand exists in an air conditioning system of the vehicle and the temperature of the cooling liquid is greater than a first temperature threshold;
determining a temperature difference between the coolant temperature and the battery cell temperature in the absence of a heating demand in a vehicle air conditioning system;
and driving the vehicle to operate in a third heat recovery mode when the temperature difference is greater than a second temperature threshold and the cell temperature is less than a rated battery heating temperature.
6. The vehicle thermal management method according to any one of claims 1-5, wherein the controlling the operating state of the thermal management device according to the control strategy corresponding to the heat recovery mode includes:
according to the control strategy corresponding to the heat recovery mode, the communication state of the electromagnetic three-way valve and the four-way valve is adjusted; and/or
And adjusting the running state of the first water pump and/or the second water pump according to the control strategy corresponding to the heat recovery mode.
7. The vehicle thermal management method according to any one of claims 1 to 5, characterized in that the vehicle thermal management method further comprises:
when the heat recovery mode is a first heat recovery mode, a first gating end of the three-way valve and a second gating end of the three-way valve are communicated, a first gating end of the four-way valve and a second gating end of the four-way valve are communicated, a third gating end of the four-way valve and a fourth gating end of the four-way valve are communicated, and the first water pump is controlled to operate at a first rotation speed;
when the heat recovery mode is a second heat recovery mode, a first gating end of the three-way valve and a second gating end of the three-way valve, a first gating end of the four-way valve and a second gating end of the four-way valve are communicated, a third gating end of the four-way valve and a fourth gating end of the four-way valve are communicated, the first water pump is controlled to operate at a first rotating speed, and the air conditioning loop is controlled to operate in an electric drive heat absorption mode;
when the heat recovery mode is a third heat recovery mode, the first gating end of the three-way valve and the second gating end of the three-way valve, the first gating end of the four-way valve and the fourth gating end of the four-way valve are communicated, the third gating end of the four-way valve and the second gating end of the four-way valve are communicated, the first water pump is controlled to operate at a second rotating speed, the second water pump is controlled to operate at a third rotating speed, and the air conditioning loop is controlled to operate in a battery heat absorption mode, wherein the first rotating speed is smaller than the third rotating speed, and the third rotating speed is smaller than the second rotating speed.
8. A vehicle thermal management apparatus, characterized in that the vehicle thermal management apparatus is applied to a thermal management device comprising: the electric drive cooling circuit comprises a first water pump, an electromagnetic three-way valve, a four-way valve and an electric drive loop Lu Huanre device, wherein the electric drive cooling circuit is connected with the refrigerant circuit through the electric drive loop heat exchanger, the electric drive cooling circuit is connected with the battery cooling circuit through the four-way valve, the electromagnetic three-way valve is used for adjusting the water path flow direction of the electric drive cooling circuit, the refrigerant circuit comprises a water-cooling heat exchanger, the refrigerant circuit is connected with the warm air cooling circuit through the water-cooling heat exchanger, the battery cooling circuit comprises a second water pump and a battery, and the second water pump is used for controlling the water flow in the battery cooling circuit so as to heat the battery;
the vehicle heat management apparatus includes:
the acquisition module is used for acquiring vehicle state parameters, battery state parameters and electric drive loop parameters of the target vehicle;
a determination module for determining a heat recovery mode of the vehicle based on at least one of the vehicle state parameter, a battery state parameter, and an electric drive circuit parameter;
And the control module is used for controlling the operation state of the thermal management equipment according to the control strategy corresponding to the heat recovery mode.
9. A vehicle thermal management apparatus, characterized by comprising: a memory, a processor, and a vehicle thermal management program stored on the memory and executable on the processor, the vehicle thermal management program configured to implement the vehicle thermal management method of any one of claims 1-7.
10. A storage medium having stored thereon a vehicle thermal management program which when executed by a processor implements the vehicle thermal management method of any one of claims 1 to 7.
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| CN202311726817.2A CN117621807A (en) | 2023-12-13 | 2023-12-13 | Vehicle thermal management method, device, equipment and storage medium |
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| CN202311726817.2A CN117621807A (en) | 2023-12-13 | 2023-12-13 | Vehicle thermal management method, device, equipment and storage medium |
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