CN116353292A - Electric automobile thermal management method and device and vehicle - Google Patents
Electric automobile thermal management method and device and vehicle Download PDFInfo
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- CN116353292A CN116353292A CN202310571894.9A CN202310571894A CN116353292A CN 116353292 A CN116353292 A CN 116353292A CN 202310571894 A CN202310571894 A CN 202310571894A CN 116353292 A CN116353292 A CN 116353292A
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- 238000007726 management method Methods 0.000 title claims abstract description 66
- 238000001816 cooling Methods 0.000 claims abstract description 22
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- 238000000034 method Methods 0.000 claims description 19
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- 238000005057 refrigeration Methods 0.000 claims description 5
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
- B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
- B60H1/00392—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell for electric vehicles having only electric drive means
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- 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
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
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- 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
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
- B60H1/00278—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit for the battery
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- 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
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
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- 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
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
- B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
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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
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- 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
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
- B60H2001/00307—Component temperature regulation using a liquid flow
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- 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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Abstract
The application provides a thermal management method and device for an electric automobile and a vehicle, wherein the thermal management method for the electric automobile comprises the following steps: determining whether a temperature of a vehicle battery pack and/or a temperature of a vehicle passenger compartment satisfies an execution condition when the vehicle is in an off-road condition; and if the execution condition is met, controlling the vehicle air conditioner to stop cooling the vehicle battery pack, and/or reducing the power of the vehicle air conditioner when the vehicle passenger cabin is cooled, and controlling the vehicle air conditioner to cool the vehicle motor. The electric automobile thermal management method provided by the application achieves the purposes of prolonging the overtemperature time of the motor and guaranteeing the temperature resistance of the motor under the off-road working condition, and further improves the off-road experience of users.
Description
Technical Field
The application relates to the technical field of electric automobiles, in particular to a thermal management method and device for an electric automobile and a vehicle.
Background
With the rise of pure electric vehicles, pure electric off-road vehicles are also increasingly accepted by the public. The off-road condition is complex, the air temperature is changeable, for example, the desert off-road condition in a high-temperature area is more tested on the temperature resistance of the motor. In off-road climbing, vehicle driving is often in a transient high-power running state, the temperature of water of a motor is also increased instantaneously, the overtemperature time of the motor is prolonged, and it is extremely important to ensure that climbing working conditions are completed within a certain time.
The existing pure electric vehicle is not different from an off-road electric vehicle and an off-road electric vehicle, the thermal management scheme is not different, and the motor is cooled through a low-temperature radiator, so that the cooling means is single. In order to give consideration to the common normal use of the vehicle, the use of the harsh off-road working condition matched thermal management system not only can cause the increase of the cost of the whole vehicle, but also has the problem of low utilization rate of the thermal management system.
Disclosure of Invention
In view of this, the purpose of the present application is to provide a thermal management method for an electric vehicle, which aims to achieve the purposes of prolonging the overtemperature time of the motor and ensuring the temperature resistance of the motor under off-road working conditions without increasing the cost of the whole vehicle and guaranteeing the utilization rate of a thermal management system, so as to further promote the off-road experience of users.
Based on the above object, in a first aspect, the present application provides a thermal management method for an electric vehicle, including:
determining whether a temperature of a vehicle battery pack and/or a temperature of a vehicle passenger compartment satisfies an execution condition when the vehicle is in an off-road condition;
and if the execution condition is met, controlling the vehicle air conditioner to stop cooling the vehicle battery pack, and/or reducing the power of the vehicle air conditioner when the vehicle passenger cabin is cooled, and controlling the vehicle air conditioner to cool the vehicle motor.
Further, the determining whether the temperature of the vehicle battery pack, and/or the temperature of the vehicle passenger compartment, satisfies the execution condition includes:
determining whether the associated temperature of the vehicle motor meets a preset condition;
and if the associated temperature of the vehicle motor meets the preset condition, executing the operation of determining whether the temperature of the vehicle battery pack and/or the temperature of the vehicle passenger cabin meet the execution condition.
Further, the execution condition includes a temperature of the vehicle battery pack being less than a first temperature threshold and/or a temperature of the vehicle passenger compartment being less than a second temperature threshold;
the associated temperature of the vehicle motor includes one or more of:
the temperature of the vehicle motor body, the temperature of the vehicle motor controller body, the water temperature of the vehicle motor cooler, and the water temperature of the cooler of the vehicle motor controller;
the preset conditions include one or more of the following: the temperature of the vehicle motor body reaches a third temperature threshold, the temperature of the vehicle motor controller body reaches a fourth temperature threshold, the water temperature of the vehicle motor cooler reaches a fifth temperature threshold, and the water temperature of the vehicle motor controller cooler reaches a sixth temperature threshold.
Further, the thermal management method of the electric automobile further comprises the following steps:
and in response to receiving a preset trigger signal, determining that the vehicle is in an off-road working condition.
Further, the preset trigger signal is triggered based on any one of the following modes:
triggering through a vehicle-mounted physical button;
triggering through a virtual button on a vehicle-mounted display screen;
and triggering remotely through a third party terminal.
Further, the thermal management method of the electric automobile further comprises the following steps:
when the associated temperature of the vehicle motor is determined to meet the preset condition, starting timing operation;
when the timing duration reaches a duration threshold, carrying out preset message prompt;
ending the operation of determining whether the temperature of the vehicle battery pack and/or the temperature of the vehicle passenger compartment meets an execution condition in response to the first feedback operation for the preset message;
and in response to a second feedback operation for the preset message, setting the timing duration to zero so as to enter the next timing cycle.
Further, the performing the preset message prompt includes one or more of the following:
displaying prompts through a vehicle-mounted display screen;
displaying prompts through a third party terminal;
prompting is carried out through voice broadcasting.
Further, the controlling the vehicle air conditioner to stop cooling the vehicle battery pack includes:
closing a refrigeration loop between the vehicle air conditioner and the vehicle battery pack;
the reducing the power of the vehicle air conditioner when the vehicle passenger cabin is cooled comprises the following steps:
and increasing the set target temperature of the passenger cabin of the vehicle to a preset threshold value.
Based on the above object, the present application further provides a thermal management device for an electric vehicle, including:
a determining module for determining whether a temperature of a vehicle battery pack and/or a temperature of a vehicle passenger compartment satisfies an execution condition when the vehicle is in an off-road condition;
and the control module is used for controlling the vehicle air conditioner to stop cooling the vehicle battery pack and/or reducing the power of the vehicle air conditioner when the vehicle passenger cabin is cooled if the execution condition is met, and controlling the vehicle air conditioner to cool the vehicle motor.
With the above object in view, in a third aspect, the present application further provides a vehicle including the thermal management device of an electric vehicle according to the second aspect.
In view of the above object, a fourth aspect of the present application further provides an electronic device, including a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the thermal management method according to the first aspect described above when executing the program.
In accordance with a fifth aspect of the above object, there is provided a computer-readable storage medium storing computer instructions for causing a computer to perform the thermal management method according to any one of the first aspect.
From the above, it can be seen that, in the thermal management method provided by the present application, the cooling mode of the vehicle motor is switched through a strategy sub-scene, specifically, when the vehicle is in an off-road working condition, whether the temperature of the vehicle battery pack and/or the temperature of the vehicle passenger compartment meet the execution condition is determined; if the execution condition is met, the vehicle air conditioner is controlled to stop cooling the vehicle battery pack, and/or the power of the vehicle air conditioner is reduced when the vehicle passenger cabin is cooled, and the vehicle air conditioner is controlled to cool the vehicle motor, so that the purposes of prolonging the overtemperature time of the motor and guaranteeing the temperature resistance of the motor under the off-road working condition are realized, the off-road experience of a user is further improved, and the increase of the whole vehicle cost is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the present application or related art, the drawings that are required to be used in the description of the embodiments or related art will be briefly described below, and it is apparent that the drawings in the following description are only embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort to those of ordinary skill in the art.
Fig. 1 is a flow chart of a thermal management method of an electric vehicle according to an embodiment of the present application;
fig. 2 is a flow chart of a thermal management method of an electric vehicle according to an embodiment of the present application;
fig. 3 is a flow chart of a thermal management method of an electric vehicle according to an embodiment of the present application;
fig. 4 is a flow chart of a thermal management method of an electric vehicle according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a thermal management device of an electric vehicle according to an embodiment of the present application;
fig. 6 is a schematic diagram of a hardware structure of an electronic device according to an embodiment of the present application.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail below with reference to the accompanying drawings.
It should be noted that unless otherwise defined, technical or scientific terms used in the embodiments of the present application should be given the ordinary meaning as understood by one of ordinary skill in the art to which the present application belongs. The terms "first," "second," and the like, as used in embodiments of the present application, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
In some embodiments, fig. 1 shows a schematic flow chart of a thermal management method of an electric vehicle, as shown in fig. 1, the thermal management method includes the following steps:
s110, when the vehicle is in the off-road working condition, determining whether the temperature of the vehicle battery pack and/or the temperature of the vehicle passenger cabin meet the execution condition.
Wherein the vehicle may determine whether the vehicle is in an off-road condition through user operation (specifically referred to as occupant), e.g., when the vehicle receives a user-triggered activation signal of "off-road mode", the vehicle may be determined to be in an off-road condition. The user can trigger the activation signal of the off-road mode through triggering the virtual icon of the off-road mode displayed on the vehicle-mounted display screen, can trigger the activation signal of the off-road mode through a voice mode, can trigger the activation signal of the off-road mode through a physical key mode, and the like.
In general, in response to receiving a preset trigger signal, it is determined that the vehicle is in an off-road condition.
The preset trigger signal is triggered based on any one of the following modes:
triggering through a vehicle-mounted physical button;
triggering through a virtual button on a vehicle-mounted display screen;
and triggering remotely through a third party terminal.
Further, the vehicle may also determine whether the vehicle is off-road through map information, for example, by combining the map information with the real-time position of the vehicle to determine whether the current position is off-road. Alternatively, the off-road condition is determined when the map information is desert, mud, or grass, etc. Further, the vehicle can also determine whether the vehicle is in an off-road condition through the environmental information acquired in real time, wherein the environmental information can comprise temperature, rainfall, visibility, road obstacles and the like.
Alternatively, the temperature of the vehicle battery pack, and/or the temperature of the vehicle passenger compartment may be detected by a temperature sensor.
And S120, if the execution condition is met, controlling the vehicle air conditioner to stop cooling the vehicle battery pack, and/or reducing the power of the vehicle air conditioner when the vehicle passenger cabin is cooled, and controlling the vehicle air conditioner to cool the vehicle motor.
For example, the execution condition includes a temperature of the vehicle battery pack being less than a first temperature threshold and/or a temperature of the vehicle passenger compartment being less than a second temperature threshold.
In some embodiments, when the execution condition is that the temperature of the vehicle battery pack is less than a first temperature threshold, the thermal management method specifically includes: when the vehicle is in the off-road working condition, determining whether the temperature of the vehicle battery pack is smaller than a first temperature threshold, and if the temperature of the vehicle battery pack is smaller than the first temperature threshold (namely, the execution condition is met), controlling the vehicle air conditioner to stop cooling the vehicle battery pack and controlling the vehicle air conditioner to cool a vehicle motor. The essence of the method is a time-sharing multiplexing strategy for the vehicle air conditioner, and when the vehicle motor is more required to dissipate heat than the vehicle battery pack, the vehicle air conditioner is switched to dissipate heat for the vehicle motor. The first temperature threshold may be, for example, 40 ℃.
In other embodiments, when the execution condition is that the temperature of the vehicle passenger compartment is less than a second temperature threshold, the thermal management method specifically includes: when the vehicle is in the off-road working condition, determining whether the temperature of the vehicle passenger cabin is smaller than a second temperature threshold, and when the temperature of the vehicle passenger cabin is smaller than the second temperature threshold (namely, the execution condition is met), controlling the vehicle air conditioner to reduce the power for cooling the vehicle passenger cabin, and controlling the vehicle air conditioner to cool the vehicle motor. The second temperature threshold may be, for example, 30 ℃.
In other embodiments, when the execution condition is that the temperature of the vehicle battery pack is less than a first temperature threshold and the temperature of the vehicle passenger compartment is less than a second temperature threshold, the thermal management method specifically comprises: when the vehicle is in the off-road working condition, determining whether the temperature of the vehicle battery pack is smaller than a first temperature threshold value and determining whether the temperature of the vehicle passenger cabin is smaller than a second temperature threshold value, if the temperature of the vehicle battery pack is smaller than the first temperature threshold value and the temperature of the vehicle passenger cabin is smaller than the second temperature threshold value (namely, the execution condition is met), controlling the vehicle air conditioner to stop cooling the vehicle battery pack, reducing the power of the vehicle air conditioner when the vehicle passenger cabin is cooled, and controlling the vehicle air conditioner to cool the vehicle motor.
It will be appreciated that during off-road conditions, the vehicle tends to be in a transient high power operating condition, and the motor temperature rises instantaneously, so it is critical to ensure that the motor is running to ensure that off-road conditions are completed within a certain period of time. To this problem, in the thermal management method that this application embodiment provided, cooling down for the vehicle motor through multiplexing vehicle air conditioner reaches the purpose of reinforcing vehicle motor heat dispersion under the off-road condition, avoids extremely easily triggering motor overtemperature protection when motor high speed, the big moment of torsion operation under the off-road condition, leads to motor limit to turn round the problem that influences off-road experience etc.. The heat management method provided by the embodiment of the application does not need additional heat dissipation equipment, so that the cost of the whole vehicle is ensured not to be increased.
In some embodiments, the controlling the vehicle air conditioner to stop cooling the vehicle battery pack comprises: and closing a refrigeration loop between the vehicle air conditioner and the vehicle battery pack. The reducing the power of the vehicle air conditioner when the vehicle passenger cabin is cooled comprises the following steps: and increasing the set target temperature of the passenger cabin of the vehicle to a preset threshold value, wherein the preset threshold value can be 30 ℃. The control of the vehicle air conditioner to cool the vehicle motor comprises the following steps: and opening a refrigeration loop between the vehicle air conditioner and the vehicle motor.
In some embodiments, referring to a flow chart of a thermal management method of an electric vehicle as shown in fig. 2, the thermal management method of an electric vehicle includes the following steps:
s210, when the vehicle is in an off-road working condition, determining whether the associated temperature of the vehicle motor meets a preset condition.
S220, if the associated temperature of the vehicle motor meets the preset condition, determining whether the temperature of the vehicle battery pack and/or the temperature of the vehicle passenger compartment meet the execution condition.
And S230, if the execution condition is met, controlling the vehicle air conditioner to stop cooling the vehicle battery pack, and/or reducing the power of the vehicle air conditioner when the vehicle passenger cabin is cooled, and controlling the vehicle air conditioner to cool the vehicle motor.
Wherein the associated temperature of the vehicle motor includes one or more of:
the temperature of the vehicle motor body, the temperature of the vehicle motor controller body, the water temperature of the vehicle motor cooler, and the water temperature of the cooler of the vehicle motor controller;
the preset conditions include one or more of the following: the temperature of the vehicle motor body reaches a third temperature threshold, the temperature of the vehicle motor controller body reaches a fourth temperature threshold, the water temperature of the vehicle motor cooler reaches a fifth temperature threshold, and the water temperature of the vehicle motor controller cooler reaches a sixth temperature threshold. For example, the third temperature threshold may be the same as the fourth temperature threshold, and the fifth temperature threshold may be the same as the sixth temperature threshold.
By first determining whether the associated temperature of the vehicle motor meets the preset condition and then determining whether to perform the thermal management operation (i.e., the operation of determining whether the temperature of the vehicle battery pack and/or the temperature of the vehicle passenger compartment meets the execution condition), it is possible to perform the thermal management operation under the condition that the vehicle motor does need to increase heat dissipation, thereby ensuring the thermal management effect and efficiency, and not performing the thermal management operation that is ineffective or has a weaker effect.
In some embodiments, referring to a flow chart of a thermal management method of an electric vehicle as shown in fig. 3, the thermal management method includes the steps of:
s310, in response to receiving a preset trigger signal, determining whether the associated temperature of the vehicle motor meets a preset condition.
And S320, if the associated temperature of the vehicle motor meets the preset condition, starting timing operation, and determining whether the temperature of the vehicle battery pack and/or the temperature of the vehicle passenger cabin meet the execution condition.
And S330, if the execution condition is met, controlling the vehicle air conditioner to stop cooling the vehicle battery pack, and/or reducing the power of the vehicle air conditioner when the vehicle passenger cabin is cooled, and controlling the vehicle air conditioner to cool the vehicle motor.
And S340, when the timing duration reaches a duration threshold, carrying out preset message prompt.
S350, responding to a first feedback operation aiming at the preset message, and ending the operation of determining whether the temperature of the vehicle battery pack and/or the temperature of the vehicle passenger cabin meet the execution condition;
s360, setting the timing duration to be zero in response to a second feedback operation for the preset message so as to enter the next timing cycle.
Illustratively, the preset message prompt includes one or more of the following:
displaying prompts through a vehicle-mounted display screen;
displaying prompts through a third party terminal;
prompting is carried out through voice broadcasting.
After the vehicle enters the off-road mode, the air conditioner of the vehicle is not closed, the energy consumption of the whole vehicle is increased, and in order to avoid misoperation of a user or forgetting to actively close the off-road mode after the off-road is completed, in the thermal management method of the embodiment of the application, when the associated temperature of the motor of the vehicle meets the preset condition, timing operation is started, and when the timing time length reaches the time length threshold, prompting is carried out so as to achieve the purpose of prompting the user to confirm whether to continue the off-road mode. In summary, by setting timing operation, detecting whether the timing time length reaches the time length threshold value, and prompting when the timing time length reaches the time length threshold value, the aim of avoiding misoperation of a user can be achieved, the intelligent degree of thermal management is further improved, and the thermal management effect is further improved.
In some embodiments, referring to a flow chart of a thermal management method of an electric vehicle as shown in fig. 4, the thermal management method includes the steps of:
s40, judging whether a preset trigger signal is received, if yes, continuing to execute the step S41, otherwise, ending the flow.
S41, judging whether the water temperature of the motor cooler and the water temperature of the cooler of the motor controller are lower than a temperature value T1, and the temperature of the motor body and the temperature of the motor controller are lower than T2, if yes, ending the flow, otherwise, continuing to execute the step S42.
S42, starting timing.
And S43, judging whether the temperature of the vehicle battery pack is higher than 40 ℃, if so, executing the step S44, otherwise, executing the step S45.
S44, controlling the vehicle air conditioner to stop cooling the vehicle battery pack.
And S45, judging whether the temperature of the passenger cabin of the vehicle is higher than 30 ℃, if so, ending the flow, otherwise, executing the step S46.
S46, reducing the power of the vehicle air conditioner when the passenger cabin is cooled.
S47, controlling the vehicle air conditioner to cool the vehicle motor.
S48, detecting whether the temperature of the battery pack is higher than 40 ℃ or whether the temperature of the passenger cabin is higher than 31 ℃, if yes, ending the flow, otherwise executing the step S49.
S49, judging whether the timing duration is longer than 1 hour, if so, executing the step S50, otherwise, executing the step S42.
S50, prompting whether to continue to execute the cross-country thermal management mode, if so, executing the step S42, otherwise, ending the flow.
According to the thermal management method for the electric automobile, the cooling mode of the motor is switched through a strategy sub-scene, the common cooling mode is used in normal use (namely under the non-off-road working condition), the off-road performance of the automobile and the off-road experience of a user are improved by comprehensively considering the capacities of a battery pack, a passenger cabin and a vehicle air conditioner and comprehensively selecting the thermal management mode of the motor when the off-road working condition is selected, so that the motor can reach lower body temperature and water temperature under the allowable condition, preparation is made for the extreme off-road working condition, the overtemperature time of the motor is prolonged, and the off-road performance of the automobile and the off-road experience of the user are improved.
It should be noted that, the method of the embodiments of the present application may be performed by a single device, for example, a computer or a server. The method of the embodiment can also be applied to a distributed scene, and is completed by mutually matching a plurality of devices. In the case of such a distributed scenario, one of the devices may perform only one or more steps of the methods of embodiments of the present application, and the devices may interact with each other to complete the methods.
It should be noted that some embodiments of the present application are described above. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments described above and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.
Based on the same inventive concept, corresponding to the method of any embodiment, the application further provides a thermal management device of an electric automobile, as shown in fig. 5, where the thermal management device includes: a determination module 510 for determining whether a temperature of a vehicle battery pack, and/or a temperature of a vehicle passenger compartment, satisfies an execution condition when the vehicle is in an off-road condition;
and the control module 520 is configured to control the vehicle air conditioner to stop cooling the vehicle battery pack and/or reduce the power of the vehicle air conditioner when the vehicle passenger compartment is cooled if the execution condition is satisfied, and control the vehicle air conditioner to cool the vehicle motor.
Further, the determining module 510 includes a determining unit, configured to determine whether an associated temperature of the vehicle motor meets a preset condition; and the execution unit is used for executing the operation of determining whether the temperature of the vehicle battery pack and/or the temperature of the vehicle passenger cabin meet the execution conditions or not if the associated temperature of the vehicle motor meets the preset conditions.
Further, the execution condition includes a temperature of the vehicle battery pack being less than a first temperature threshold and/or a temperature of the vehicle passenger compartment being less than a second temperature threshold;
the associated temperature of the vehicle motor includes one or more of:
the temperature of the vehicle motor body, the temperature of the vehicle motor controller body, the water temperature of the vehicle motor cooler, and the water temperature of the cooler of the vehicle motor controller;
the preset conditions include one or more of the following: the temperature of the vehicle motor body reaches a third temperature threshold, the temperature of the vehicle motor controller body reaches a fourth temperature threshold, the water temperature of the vehicle motor cooler reaches a fifth temperature threshold, and the water temperature of the vehicle motor controller cooler reaches a sixth temperature threshold.
Further, the thermal management device further includes: the off-road working condition determining module is used for determining that the vehicle is in an off-road working condition in response to receiving a preset trigger signal.
Further, the preset trigger signal is triggered based on any one of the following modes:
triggering through a vehicle-mounted physical button;
triggering through a virtual button on a vehicle-mounted display screen;
and triggering remotely through a third party terminal.
Further, the thermal management device further includes:
the timing module is used for starting timing operation when the associated temperature of the vehicle motor is determined to meet the preset condition; when the timing duration reaches a duration threshold, carrying out preset message prompt; ending the operation of determining whether the temperature of the vehicle battery pack and/or the temperature of the vehicle passenger compartment meets an execution condition in response to the first feedback operation for the preset message; and in response to a second feedback operation for the preset message, setting the timing duration to zero so as to enter the next timing cycle.
Further, the performing the preset message prompt includes one or more of the following:
displaying prompts through a vehicle-mounted display screen;
displaying prompts through a third party terminal;
prompting is carried out through voice broadcasting.
Further, the control module 520 is specifically configured to: closing a refrigeration loop between the vehicle air conditioner and the vehicle battery pack; and/or, the set target temperature of the passenger cabin of the vehicle is increased to a preset threshold value.
For convenience of description, the above devices are described as being functionally divided into various modules, respectively. Of course, the functions of each module may be implemented in the same piece or pieces of software and/or hardware when implementing the present application.
The device of the foregoing embodiment is used for implementing the corresponding thermal management method of the electric vehicle in any of the foregoing embodiments, and has the beneficial effects of the corresponding method embodiment, which is not described herein again.
Based on the same inventive concept, the application also provides a vehicle corresponding to the method of any embodiment, wherein the vehicle comprises the thermal management device of the electric automobile.
Based on the same inventive concept, the application also provides an electronic device corresponding to the method of any embodiment, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor realizes the thermal management method of the electric automobile of any embodiment when executing the program.
Fig. 6 shows a more specific hardware architecture of an electronic device according to this embodiment, where the device may include: a processor 1010, a memory 1020, an input/output interface 1030, a communication interface 1040, and a bus 1050. Wherein processor 1010, memory 1020, input/output interface 1030, and communication interface 1040 implement communication connections therebetween within the device via a bus 1050.
The processor 1010 may be implemented by a general-purpose CPU (Central Processing Unit ), microprocessor, application specific integrated circuit (Application Specific Integrated Circuit, ASIC), or one or more integrated circuits, etc. for executing relevant programs to implement the technical solutions provided in the embodiments of the present disclosure.
The Memory 1020 may be implemented in the form of ROM (Read Only Memory), RAM (Random Access Memory ), static storage device, dynamic storage device, or the like. Memory 1020 may store an operating system and other application programs, and when the embodiments of the present specification are implemented in software or firmware, the associated program code is stored in memory 1020 and executed by processor 1010.
The input/output interface 1030 is used to connect with an input/output module for inputting and outputting information. The input/output module may be configured as a component in a device (not shown) or may be external to the device to provide corresponding functionality. Wherein the input devices may include a keyboard, mouse, touch screen, microphone, various types of sensors, etc., and the output devices may include a display, speaker, vibrator, indicator lights, etc.
It should be noted that although the above-described device only shows processor 1010, memory 1020, input/output interface 1030, communication interface 1040, and bus 1050, in an implementation, the device may include other components necessary to achieve proper operation. Furthermore, it will be understood by those skilled in the art that the above-described apparatus may include only the components necessary to implement the embodiments of the present description, and not all the components shown in the drawings.
The electronic device of the foregoing embodiment is configured to implement the corresponding thermal management method in any of the foregoing embodiments, and has the beneficial effects of the corresponding method embodiment, which is not described herein.
Based on the same inventive concept, corresponding to the method of any embodiment described above, the present application further provides a computer-readable storage medium storing computer instructions for causing the computer to perform the method of thermal management of an electric vehicle according to any embodiment described above.
The computer readable media of the present embodiments, including both permanent and non-permanent, removable and non-removable media, may be used to implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device.
The computer instructions stored in the storage medium of the foregoing embodiments are used to make the computer execute the thermal management method of the electric automobile according to any one of the foregoing embodiments, and have the beneficial effects of the corresponding method embodiments, which are not described herein.
Those of ordinary skill in the art will appreciate that: the discussion of any of the embodiments above is merely exemplary and is not intended to suggest that the scope of the application (including the claims) is limited to these examples; the technical features of the above embodiments or in the different embodiments may also be combined within the idea of the present application, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of brevity.
Additionally, well-known power/ground connections to Integrated Circuit (IC) chips and other components may or may not be shown within the provided figures, in order to simplify the illustration and discussion, and so as not to obscure the embodiments of the present application. Furthermore, the devices may be shown in block diagram form in order to avoid obscuring the embodiments of the present application, and this also takes into account the fact that specifics with respect to implementation of such block diagram devices are highly dependent upon the platform on which the embodiments of the present application are to be implemented (i.e., such specifics should be well within purview of one skilled in the art). Where specific details (e.g., circuits) are set forth in order to describe example embodiments of the application, it should be apparent to one skilled in the art that embodiments of the application can be practiced without, or with variation of, these specific details. Accordingly, the description is to be regarded as illustrative in nature and not as restrictive.
While the present application has been described in conjunction with specific embodiments thereof, many alternatives, modifications, and variations of those embodiments will be apparent to those skilled in the art in light of the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may use the embodiments discussed.
The present embodiments are intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Accordingly, any omissions, modifications, equivalents, improvements and/or the like which are within the spirit and principles of the embodiments are intended to be included within the scope of the present application.
Claims (10)
1. A method of thermal management of an electric vehicle, comprising:
determining whether a temperature of a vehicle battery pack and/or a temperature of a vehicle passenger compartment satisfies an execution condition when the vehicle is in an off-road condition;
and if the execution condition is met, controlling the vehicle air conditioner to stop cooling the vehicle battery pack, and/or reducing the power of the vehicle air conditioner when the vehicle passenger cabin is cooled, and controlling the vehicle air conditioner to cool the vehicle motor.
2. The thermal management method of claim 1, wherein determining whether the temperature of the vehicle battery pack, and/or the temperature of the vehicle passenger compartment, meets an execution condition comprises:
determining whether the associated temperature of the vehicle motor meets a preset condition;
and if the associated temperature of the vehicle motor meets the preset condition, executing the operation of determining whether the temperature of the vehicle battery pack and/or the temperature of the vehicle passenger cabin meet the execution condition.
3. The thermal management method of claim 2, wherein the execution condition includes a temperature of the vehicle battery pack being less than a first temperature threshold and/or a temperature of the vehicle passenger compartment being less than a second temperature threshold;
the associated temperature of the vehicle motor includes one or more of:
the temperature of the vehicle motor body, the temperature of the vehicle motor controller body, the water temperature of the vehicle motor cooler, and the water temperature of the cooler of the vehicle motor controller;
the preset conditions include one or more of the following: the temperature of the vehicle motor body reaches a third temperature threshold, the temperature of the vehicle motor controller body reaches a fourth temperature threshold, the water temperature of the vehicle motor cooler reaches a fifth temperature threshold, and the water temperature of the vehicle motor controller cooler reaches a sixth temperature threshold.
4. The thermal management method according to claim 1, further comprising:
and in response to receiving a preset trigger signal, determining that the vehicle is in an off-road working condition.
5. The method of thermal management according to claim 4, wherein the preset trigger signal is triggered based on any one of the following:
triggering through a vehicle-mounted physical button;
triggering through a virtual button on a vehicle-mounted display screen;
and triggering remotely through a third party terminal.
6. The thermal management method according to any one of claims 1 to 5, further comprising:
when the associated temperature of the vehicle motor is determined to meet the preset condition, starting timing operation;
when the timing duration reaches a duration threshold, carrying out preset message prompt;
ending the operation of determining whether the temperature of the vehicle battery pack and/or the temperature of the vehicle passenger compartment meets an execution condition in response to the first feedback operation for the preset message;
and in response to a second feedback operation for the preset message, setting the timing duration to zero so as to enter the next timing cycle.
7. The method of thermal management according to any one of claims 1-5, wherein said controlling the vehicle air conditioner to stop cooling the vehicle battery pack comprises:
closing a refrigeration loop between the vehicle air conditioner and the vehicle battery pack;
the reducing the power of the vehicle air conditioner when the vehicle passenger cabin is cooled comprises the following steps:
and increasing the set target temperature of the passenger cabin of the vehicle to a preset threshold value.
8. A thermal management device for an electric vehicle, comprising:
a determining module for determining whether a temperature of a vehicle battery pack and/or a temperature of a vehicle passenger compartment satisfies an execution condition when the vehicle is in an off-road condition;
and the control module is used for controlling the vehicle air conditioner to stop cooling the vehicle battery pack and/or reducing the power of the vehicle air conditioner when the vehicle passenger cabin is cooled if the execution condition is met, and controlling the vehicle air conditioner to cool the vehicle motor.
9. A computer readable storage medium storing computer instructions for causing a computer to perform the method of any one of claims 1 to 7.
10. A vehicle comprising the thermal management device of an electric vehicle according to claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310571894.9A CN116353292A (en) | 2023-05-19 | 2023-05-19 | Electric automobile thermal management method and device and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310571894.9A CN116353292A (en) | 2023-05-19 | 2023-05-19 | Electric automobile thermal management method and device and vehicle |
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| CN116353292A true CN116353292A (en) | 2023-06-30 |
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| CN202310571894.9A Pending CN116353292A (en) | 2023-05-19 | 2023-05-19 | Electric automobile thermal management method and device and vehicle |
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| Country | Link |
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| CN (1) | CN116353292A (en) |
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