CN106004331A - Control system and method for air conditioner of electric vehicle - Google Patents
Control system and method for air conditioner of electric vehicle Download PDFInfo
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- CN106004331A CN106004331A CN201610462094.3A CN201610462094A CN106004331A CN 106004331 A CN106004331 A CN 106004331A CN 201610462094 A CN201610462094 A CN 201610462094A CN 106004331 A CN106004331 A CN 106004331A
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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
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/0065—Control members, e.g. levers or knobs
- B60H1/00657—Remote control devices
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- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention relates to the technical field of new energy vehicles, in particular to a control system and method for an air conditioner of an electric vehicle. The system comprises a remote control module mounted in a mobile device, a background server and the electric vehicle and is characterized in that the electric vehicle comprises a vehicle-mounted intelligent terminal, an air conditioner related component control system, an awakening relay and a storage battery; the remote control module communicates with the background server through a mobile network, the background server communicates with the vehicle-mounted intelligent terminal through the mobile network, and the vehicle-mounted intelligent terminal is connected to a CAN network of the electric vehicle; two contact points of the awakening relay are connected with the storage battery and the air conditioner related component control system respectively, and a control end of the awakening relay is electrically connected with the vehicle-mounted intelligent terminal; the air conditioner related component control system comprises an air conditioner control module, a complete vehicle controller, a battery management module, a DCAC inverter and a DCDC convertor.
Description
Technical Field
The invention relates to the technical field of new energy automobiles, in particular to an air conditioner control system and a control method of an electric automobile.
Background
The middle-high-end vehicle type of the traditional gasoline vehicle can remotely start the engine through a remote control key, and the air conditioner can be started only when the air conditioner system is not closed in the last driving cycle. And the temperature control of the air conditioner can not be realized, and the temperature in the cabin is automatically adjusted only when an automatic air conditioning system is arranged in the gasoline vehicle. Some devices have been developed in China to realize remote air conditioner control through post-modification, so that the modification risk is high, and additional equipment is needed to realize signal transmission.
The remote air conditioner control system for the new energy automobile such as a pure electric automobile can only realize single refrigeration but cannot realize heating. With the rapid advance of the internet of vehicles technology of new energy vehicles, the remote air-conditioning control function can be planned at the front end design stage of the vehicle function, and the remote air-conditioning control is realized through the vehicle-mounted intelligent terminal, the vehicle controller, the electrical connection and the like, so that the refitting risk of the rear end market is avoided, the scientific and technological sense and the comfort of the whole vehicle are improved, and an engineer can systematically consider the optimal management of the high-voltage energy and the low-voltage power distribution of the whole vehicle at the beginning of design.
Disclosure of Invention
The invention aims to provide an air conditioner control system of an electric automobile with high-voltage energy optimal management and low-voltage power distribution, which comprises a remote control module, a background server and the electric automobile, wherein the remote control module is installed in mobile equipment; the method is characterized in that: the electric automobile comprises a vehicle-mounted intelligent terminal, an air conditioner related component control system, a wake-up relay and a storage battery; the remote control module is communicated with the background server through a mobile network, the background server is communicated with the vehicle-mounted intelligent terminal through the mobile network, and the vehicle-mounted intelligent terminal is connected to a CAN (controller area network) of the electric automobile; two contacts of the awakening relay are respectively connected with the storage battery and the air conditioner related component control system, and the control end of the awakening relay is electrically connected with the vehicle-mounted intelligent terminal; the air-conditioning-related component control system includes: the system comprises an air conditioner control module, a vehicle control unit, a battery management module, a DCAC inverter and a DCDC converter. The air-conditioning related component control system and the storage battery are communicated through the closing of the awakening relay, the air-conditioning related component control system realizes the 12V power supply of each air-conditioning related component, so that the modules related to the remote air conditioner are awakened, and the remote air-conditioning control state is sent to the CAN network through the CAN to inform each module. The rest modules are in a sleep or power-off state. The user can remotely control a plurality of parts of the vehicle to work cooperatively to realize the whole vehicle level function which cannot be finished by a certain controller.
The invention also provides an electric automobile air conditioner control method based on the electric automobile air conditioner control system, which is characterized in that: the remote control module sends a remote air-conditioning control request to the vehicle-mounted intelligent terminal through the background server, and the vehicle-mounted intelligent terminal controls the on-off state of the wake-up relay according to the remote air-conditioning control request and sends a remote air-conditioning control command to the CAN network; the electric automobile can enter a remote air conditioner control state according to the remote air conditioner control command. Wherein the remote air conditioner control request at least includes: the control system comprises switch information for controlling the on or off of the air conditioner of the electric automobile and temperature information for controlling the refrigeration or heating of an air conditioning system of the electric automobile. The remote air conditioner control command at least includes: and marking the mark information of the remote air conditioner control state and the temperature information. Under the remote air-conditioning control state, the vehicle control unit works in a remote air-conditioning control mode, and the battery management module works in the remote air-conditioning control mode.
Further, the remote control module sends a remote air conditioner control request to the vehicle-mounted intelligent terminal through the background server, and the vehicle-mounted intelligent terminal wakes up the one-key starting system of the electric automobile. The one-key start system monitors a key of the automobile and transmits a one-key start state signal indicating whether one-key start is triggered or not to the CAN network in real time. The vehicle-mounted intelligent terminal is used for starting the state signal according to the one-key: when one-key starting is triggered, setting a remote wake-up signal on the CAN network to zero; and when the triggering of one-key starting is not detected within a preset fixed time period, sending the remote air conditioner control command and a remote wake-up signal to the CAN network. The one-touch activation system is guaranteed to have the highest priority.
Further, the vehicle control unit is in the remote air-conditioning control mode: a high voltage relay closing signal can be sent to the battery management module; and according to the feedback information of the battery management module indicating whether the high-voltage battery connection is successful, after the high-voltage battery connection of the battery management module is successful:
the vehicle control unit sends a remote air conditioner enabling signal to the air conditioner control module through the CAN network;
the vehicle control unit sends high-voltage power limit information representing the allowed air-conditioning system power to the air-conditioning control module through the CAN network;
the finished vehicle controller prohibits the DCAC inverter from outputting alternating-current voltage;
the vehicle control unit allows the DCDC converter to output direct-current voltage.
Further, the battery management module can receive the high-voltage relay closing signal in the remote air-conditioning control mode:
when the power battery of the electric automobile is in an uncharged state, the battery management module executes the closing operation of the high-voltage relay and returns feedback information indicating that the high-voltage battery is successfully connected;
when the power battery of the electric automobile is in a slow charging state, the battery management module executes the closing operation of the high-voltage relay while keeping the closing of the slow charging relay, and returns feedback information indicating the successful connection of the high-voltage battery;
when the power battery of the electric automobile is in a fast charging state, the battery management module does not execute the high-voltage relay closing signal, and returns feedback information indicating connection failure of the high-voltage battery and fast charging state information of the battery to the vehicle control unit, and the vehicle control unit finishes the remote air conditioner control state of the electric automobile.
Further, the air conditioner control module can perform mode control on an air conditioner system of the electric vehicle: and automatically adjusting the air conditioning system to work in a refrigerating state or a heating state according to the temperature information of the remote air conditioning control command.
Further, the air conditioner control module can perform power control on the air conditioner system of the electric automobile according to the following steps: and controlling an electric compressor and a heater of the air conditioning system according to the high-voltage power limit information sent by the vehicle control unit, so that the electric compressor and/or the heater work within a power range defined by the high-voltage power limit information.
Further, the air conditioner control module can perform mode control on the air conditioning system of the electric automobile, and meanwhile, the air conditioner control module can perform power limitation on the air conditioning system of the electric automobile. Wherein,
and (3) mode control: the air conditioner control module automatically adjusts the air conditioning system to work in a refrigerating state or a heating state according to the temperature information of the remote air conditioner control command;
and (3) power control: the control method comprises the steps of controlling an electric compressor and a heater of the air conditioning system according to high-voltage power limit information sent by the vehicle control unit, so that the electric compressor and/or the heater work within a power range defined by the high-voltage power limit information.
Further, in the remote air-conditioning control state, the one-key starting system of the electric automobile monitors a key switch of the electric automobile, and unlocks a door of the electric automobile when a legal key exists in the key switch. The one-key starting system ensures that the key position is still monitored all the time in a remote air conditioner control state, and seamless connection between the remote air conditioner control and the one-key starting system is realized.
Further, the vehicle controller monitors and integrates the vehicle state of the electric vehicle, and when the vehicle state does not meet the starting condition of the remote air-conditioning control state, fault information is fed back to the vehicle-mounted intelligent terminal, and the vehicle-mounted intelligent terminal feeds back the fault information to the remote control module through the background server.
Drawings
FIG. 1 is a structural diagram of an air conditioning control system of an electric vehicle.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The vehicle type stated in the invention is a pure electric drive vehicle type, the high-voltage power battery is the only reserve energy of the vehicle, and the chemical energy is converted into the mechanical energy through the motor system to realize the running function of the vehicle. Vehicle mounted high voltage accessories such as electric heaters, electric compressors, DCDC converters, etc. are also power supplies using high voltage power batteries. The 12V storage battery of the vehicle obtains energy from the high-voltage battery indirectly through the DCDC converter, and the power supply requirement of the vehicle-mounted low-voltage system is met.
Referring to fig. 1, the air conditioner control system of the electric vehicle implemented by the invention comprises a remote control module installed in a mobile device, a background server and the electric vehicle. The electric automobile comprises a vehicle-mounted intelligent terminal, an air conditioner related component control system, a wake-up relay and a storage battery. The remote control module is communicated with the background server through a mobile network, the background server is communicated with the vehicle-mounted intelligent terminal through the mobile network, and the vehicle-mounted intelligent terminal is connected to a CAN (controller area network) of the electric automobile. Two contacts of the awakening relay are respectively connected with the storage battery and the air conditioner related component control system, and the control end of the awakening relay is electrically connected with the vehicle-mounted intelligent terminal. The air-conditioning-related component control system includes: the system comprises an air conditioner control module, a vehicle control unit, a battery management module, a DCAC inverter and a DCDC converter. An air conditioning system for an electric vehicle includes: the air conditioner control module is electrically connected with all parts of the air conditioning system and controls all parts to work in a coordinated mode.
The air conditioner control system of the electric vehicle comprises the following implementation mechanisms:
1. acquisition of remote air conditioning control commands
The remote air-conditioning instruction is a remote air-conditioning control request which is input by a driver through a remote control module arranged in mobile equipment such as a mobile phone and the like, and can automatically set the required cabin temperature, or an instruction which is sent to a background through the Internet after a user logs in a server through the Internet. The remote air conditioner control request is transmitted to the background server through a mobile network/Internet, and the background server sends a remote air conditioner control command to the vehicle-mounted intelligent terminal according to the remote air conditioner control request.
Wherein the remote air conditioner control request at least includes: the control method comprises the following steps of controlling the on-off information of an air conditioner of the electric automobile, and controlling the temperature information of the electric automobile for controlling the refrigerating or heating temperature.
The remote air conditioner control command at least includes: flag information for marking a control state of the remote air conditioner, and temperature information.
2. Powering on air conditioner related components
The related components of the air conditioner CAN be powered on in two ways, one way is realized by realizing CAN awakening of the controller through an OSEK or AUTOSAR network management protocol, the type has higher requirement on the controller, and the related components of the air conditioner are required to support CAN network awakening. The other is that a wake-up relay is connected in parallel at the position of a key switch, the wake-up relay is driven to only wake up the modules related to the remote air conditioner, and the other modules are in a sleep or non-power supply state.
The vehicle-mounted intelligent terminal controls the command according to the remote air conditioner: controlling the wake-up relay to be closed to realize 12V power supply of relevant components of each air conditioner; and sends a remote air-conditioning control command to the CAN network through the CAN network to inform various components of the electric vehicle system.
3. Anti-theft horn release for vehicle body
The remote air conditioner is controlled to pass through the automobile body to prevent theft, and the anti-theft loudspeaker is forbidden. The one-key starting system ensures that the key position is monitored all the time in a remote air-conditioning state, and once the key is detected to be legal, a user is allowed to open or lock the vehicle door by pressing a soft switch assembled on a door handle.
4. Remote connection of high voltage battery
In the remote air conditioner control state, after all relevant components are awakened, the mark information which is used for marking the remote air conditioner control state and is sent to the CAN through the vehicle-mounted intelligent terminal is used for formulating a control strategy different from the normal key electrification. The vehicle control unit can still send high-voltage relay closing signals and high-voltage relay opening commands in a remote air conditioner control state, and after the battery management module receives the high-voltage relay closing signals, the battery management module is divided into control logics in the following three states according to the actual use condition of the electric vehicle:
a) the power battery is in an uncharged state
The battery management module responds to a high-voltage relay closing signal of the vehicle control unit, controls high-voltage pre-charging of the battery system according to the normal steps, and controls closing of the high-voltage positive and negative relays through pre-charging voltage fed back by the DCAC inverter.
b) The power battery is in a slow charging state
And the battery management module responds to a high-voltage relay closing signal of the vehicle control unit, and simultaneously does not disconnect a slow charging relay, so that the charging loop and the discharging loop of the battery system are closed simultaneously. Under the situation, the mode that the user frequently uses is also recommended, namely the air conditioning function is realized by indirectly using a 220V power supply, and the purpose of maximally saving the energy consumption of the vehicle-mounted power battery is achieved.
c) The power battery is in a rapid charging state
At the moment, the battery management module does not execute a high-voltage relay closing signal, and returns feedback information indicating connection failure of the high-voltage battery and quick charging state information of the battery to the vehicle control unit, and the vehicle control unit finishes the remote air conditioner control state of the electric vehicle.
5. Control mechanism of air conditioner control module
The control mechanism of the air conditioner control module comprises mode control and power control.
a) Mode control
The air conditioner control module enters an AUTO mode according to a remote air conditioner control command sent by the vehicle-mounted intelligent terminal, and the default setting required temperature of the AUTO mode is 25 ℃. And the air conditioning system can be automatically adjusted to work in a refrigerating state or a heating state according to the temperature information of the remote air conditioning control command.
b) Power control
And after the vehicle control unit controls the high-voltage battery to be connected, sending a remote air conditioner enabling signal and high-voltage power limiting information representing the allowed air conditioner system power to the air conditioner control module. The air conditioner control module controls an electric compressor and a heater of the air conditioner system according to the high-voltage power limit information sent by the vehicle control unit, so that the electric compressor and/or the heater work within a power range limited by the high-voltage power limit information.
6. Vehicle state information feedback
The vehicle controller monitors and integrates the vehicle state of the electric vehicle, and when the vehicle state does not meet the starting condition of the remote air-conditioning control state, the fault information is fed back to the vehicle-mounted intelligent terminal, and the vehicle-mounted intelligent terminal feeds back to the remote control module through the background server.
Based on the implementation mechanism, the working steps of the air conditioner control system of the electric automobile comprise:
step 1: the user sends a remote air conditioner control request to the background server through a remote control module in the mobile device, the background server analyzes the remote air conditioner control request to obtain switch information (described by taking opening as an example) for controlling the opening or closing of an air conditioner of the electric automobile and temperature information for controlling the refrigeration or heating of an air conditioning system of the electric automobile, and the default value of the temperature information is 25 ℃.
Step 2: and the background server transmits the remote air-conditioning control request in Step1 to the vehicle-mounted intelligent terminal of the electric automobile for receiving through the mobile network, and simultaneously the vehicle-mounted intelligent terminal is awakened, and further awakens a one-key starting system.
Step 3: after the one-key starting system is awakened, the one-key starting system goes beyond the verification of the anti-theft password of the vehicle body, closes the anti-theft horn, monitors whether the key is around the vehicle or not, and transmits a one-key starting state signal (PEPS Ignition/PEPS Off/PEPS Acc) to the CAN network in real time. Wherein, a one-touch start triggering signal (PEPS Ignition) indicates that a user intervenes in vehicle control, and one-touch start is triggered.
Step 4: once monitoring a one-key start trigger signal (PEPS Ignition), the vehicle-mounted intelligent terminal immediately stops the related operation of the Remote wake-up command, and sets a Remote wake-up signal (Remote wake-up) signal on the CAN network to zero.
Step 5: the method comprises the steps that a vehicle-mounted intelligent terminal does not detect a one-key starting trigger signal (PEPSignation) within a preset time period, and simultaneously, when the fact that the vehicle body is effectively fortified (namely, a person not carrying a key cannot open a vehicle door) is detected, a wakeup relay is controlled to be closed, and a Remote wakeup signal (Remote wakeup) and a Remote air-conditioning control command (at least comprising switch information for controlling the opening or closing of an electric vehicle air conditioner and temperature information for controlling the cooling or heating of an air-conditioning system) generated according to a Remote air-conditioning control request in Step2 are sent to a CAN network. Meanwhile, the vehicle-mounted intelligent terminal sets a counter arranged in the vehicle-mounted intelligent terminal to zero and starts timing (timing is used for calculating the starting period of a remote air conditioner requirement, and details are shown in Step 12).
Step 6: if the condition for closing the wake-up relay at Step5 is satisfied, the vehicle control unit determines that: if any of the system, the SOC (State of Charge of the battery) and the battery is being rapidly charged, the system is fed back to the vehicle-mounted intelligent terminal through the CAN network, the vehicle-mounted intelligent terminal stops sending the Remote wake-up signal Remote, and information is fed back to a Remote control module in the user mobile equipment through a background server.
Step 7: if the finished vehicle controller judges in Step 6: if the system of the electric automobile has a fault, the SOC (State of charge) is too low, the battery is rapidly charged and the three are not powered, the vehicle-mounted intelligent terminal sends a high-voltage battery connection command to the CAN network, and the vehicle controller sends a high-voltage relay closing signal to the CAN network according to the high-voltage battery connection command.
Step 8: after the battery management module receives a high-voltage relay closing instruction of the vehicle control unit, the battery management module firstly controls the pre-charging relay to be closed, the DCAC inverter feeds back pre-charging voltage of a direct-current bus end of the DCAC inverter, and the battery management module controls the positive and negative relays of the discharging loop to be closed according to the successful pre-charging.
Step 9: the vehicle control unit judges whether the high-voltage battery is connected according to the positive and negative electrode relay states fed back by the battery management module, and after the connection is finished:
sending a remote air conditioner enabling signal to an air conditioner control module through a CAN network;
sending high-voltage power limit information to an air conditioner control module through a CAN network, and informing the air conditioner control module of the allowed air conditioner system power;
the DCAC inverter is prohibited from outputting alternating voltage through a CAN network or a hard wire, so that the vehicle cannot be moved;
and informing the DCDC converter to output direct-current voltage through a CAN network or hardware PWM (pulse width modulation), and keeping the load of the low-voltage electrical appliance to work normally.
Step 10: and the air conditioner control module adjusts the air conditioner system to work in a compressor cooling state or a high-pressure heater heating state according to the temperature information in Step5, and the power consumption of the air conditioner system and the high-pressure heater heating state cannot exceed the allowable air conditioner system power sent by the vehicle control unit in Step 9.
In the process of the steps, if one-key starting is triggered: the push-to-start system sends a push-to-start trigger signal (PEPS Ignition) to the CAN network in real time.
Step 11: in the working process of the remote air conditioner, the vehicle-mounted intelligent terminal feeds back the actual temperature in the cabin and the timing time in Step5 to the background server in real time, and the background server feeds back the information to a remote control module (such as a mobile phone APP or an Internet login interface) in the mobile equipment for reminding.
Step 12: after the timer in Step5 reaches the preset time of 10min (the value can be calibrated according to the performance of the air conditioner), the vehicle-mounted intelligent terminal sends an inquiry permission to the background server, and the background server transmits the inquiry permission to the remote control module in the mobile equipment for reminding and inquiring whether to carry out the next cycle.
Step 13: if Step12 is answered affirmatively, it is repeated (Step 5-11).
Step 14: if Step12 is answered negatively, the vehicle-mounted intelligent terminal resets the Remote wake-up signal Remote wakeup in Step 5.
Step 15: after detecting the reset of the Remote wakeup signal, the vehicle control unit resets the Remote air-conditioning enable signal in Step9, and reduces the power of the air-conditioning system allowed by the high-voltage power limit information in Step9 to 0 w.
Step 16: the air conditioner control module controls the rotating speed of the compressor to be reduced to 0 turn in order, controls the heating power of the high-pressure heater to be 0w in order, and feeds back the working states of all parts of the air conditioning system to the CAN network in real time.
Step 17: and the vehicle control unit resets the high-voltage relay closing signal in Step7 after confirming that the operation is stopped according to the operation state of each part of the air conditioning system in Step 16.
Step 18: the battery management module is switched off when the battery is not charged according to the previous working state (uncharged/slow-charged/fast-charged), and the battery is continuously controlled to be slowly charged when the battery is slowly charged, and is continuously and quickly charged when the battery is fast charged.
In the process of the steps, if one-key starting is triggered: the push-to-start system sends a push-to-start trigger signal (PEPS Ignition) to the CAN network in real time:
after receiving the one-key start trigger signal (PEPS Ignition), the vehicle-mounted intelligent terminal immediately resets the Remote wake-up signal (Remote wake-up) in Step5 and controls the wake-up relay to be switched off.
After receiving a one-key starting trigger signal (PEPS Ignition), the vehicle control unit continues to send a high-voltage relay closing signal, and the working mode jumps from the Remote air-conditioning control mode 'Remote AC' state to the high-voltage Ready 'HV Ready' state. (HV Ready means high pressure Ready and not vehicle movement Ready, i.e. total immobilizer is not performed).
After receiving a one-key starting trigger signal (PEPS Ignition), the battery management module continues to control the high-voltage relay to be closed, and the working mode jumps from the Remote air-conditioning control mode 'Remote AC' to the 'Operation' state.
The air conditioner controller stays in the 'AUTO' mode after being remotely awakened, and the air conditioner controller is not quitted until a user turns the temperature or the mode by screwing a knob.
The above description is only a preferred embodiment of the present invention, and is not limited to the above embodiments, and all the obvious technical modifications according to the technical solutions of the present invention fall within the protection scope of the present invention. Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various changes or modifications within the scope of the appended claims.
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| CN111483287A (en) * | 2019-01-29 | 2020-08-04 | 长城汽车股份有限公司 | Method and device for controlling recovered energy of HVH (high voltage direct current) of electric vehicle |
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| CN112659851A (en) * | 2020-12-16 | 2021-04-16 | 厦门金龙旅行车有限公司 | Light pure electric refrigerator car and refrigeration control method thereof |
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| CN113232609A (en) * | 2021-05-11 | 2021-08-10 | 上汽通用五菱汽车股份有限公司 | Power mode skip method, vehicle, and computer-readable storage medium |
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| CN114872641A (en) * | 2022-06-16 | 2022-08-09 | 江铃汽车股份有限公司 | Energy conversion device, electric vehicle and energy output control method thereof |
| CN115352244A (en) * | 2022-08-19 | 2022-11-18 | 合众新能源汽车有限公司 | Method and device for starting air conditioner in reserved mode |
| CN116572699A (en) * | 2023-04-27 | 2023-08-11 | 奇瑞新能源汽车股份有限公司 | Pure electric vehicle control method and system for keeping constant temperature in vehicle after vehicle separation |
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Denomination of invention: An electric vehicle air conditioning control system and control method Granted publication date: 20180605 Pledgee: Tongxiang Science and Technology Entrepreneurship Service Center Co.,Ltd. Pledgor: United New Energy Automobile Co.,Ltd. Registration number: Y2024330000709 |
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