CN111016579B - Remote safety control system and method for vehicle-mounted air conditioner of new energy automobile - Google Patents
Remote safety control system and method for vehicle-mounted air conditioner of new energy automobile Download PDFInfo
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- CN111016579B CN111016579B CN201911423909.7A CN201911423909A CN111016579B CN 111016579 B CN111016579 B CN 111016579B CN 201911423909 A CN201911423909 A CN 201911423909A CN 111016579 B CN111016579 B CN 111016579B
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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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- 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
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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
- B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
- B60H1/2215—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters
- B60H1/2218—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters controlling the operation of electric heaters
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- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Air-Conditioning For Vehicles (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a remote safety control system and a remote safety control method for a vehicle-mounted air conditioner of a new energy automobile, wherein the system comprises the following steps: the mobile terminal is connected with the T-BOX in a remote communication mode, the T-BOX is connected with the PTC controller through a CAN line, the PTC controller is connected with the battery management system BMS in a communication mode through the CAN line, the battery management system BMS is connected with the main negative relay, the pre-charging relay and the main positive relay in a communication mode, and the PTC controller is connected with the air-conditioning control system CLM and the motor controller MCU through the CAN line. During the period of starting and canceling heating of the remote heating control of the air conditioner, the PTC controller is in a remote control mode to temporarily take over the control functions of the VCU, such as: and sending a battery connection and disconnection command to the BMS, sending a command of entering an active discharge mode and a command of entering a sleep mode to the MCU, and not having partial control functions of the VCU after the PTC controller exits a remote control mode. Therefore, the control confusion caused by the cross of the control functions of the PTC controller and the VCU in the normal driving process is avoided.
Description
Technical Field
The invention belongs to the technical field of new energy vehicles, and particularly relates to a remote safety control system and method for a vehicle-mounted air conditioner of a new energy vehicle.
Background
The novel energy automobile adopts the PTC controller and is matched with a CLM (air conditioning control system) to heat air in the passenger compartment, and the requirements of heating, defrosting and demisting in the automobile are met.
In cold seasons, the vehicle is just started and the air conditioner is started to heat, the temperature in the passenger cabin cannot reach the temperature comfortable for body feeling at once, therefore, the heating function of the new energy automobile remote air conditioner is realized, and passengers can get better driving feeling in winter. In a new energy automobile, the PTC heating device works in a direct-current high-voltage environment of 320VDC or above, and has a large amount of information interaction with other high-voltage components of the whole automobile, so that a perfect safety mechanism is needed to ensure the safety of the whole automobile when the PTC heating device is remotely controlled.
In the existing vehicle-mounted air conditioner remote control technology, a vehicle control unit VCU is required to receive a remote control command sent by a T-box firstly when control is carried out, the VCU analyzes the remote control command and then sends the control command to a PTC controller, the VCU undertakes a center of information interaction and control, the signal interaction process is long, and the probability of communication errors and the static power consumption of a vehicle-mounted low-voltage storage battery are increased. In the process of the control mode, the VCU of the vehicle controller is in a fully activated state, namely the vehicle is in the fully activated state, so that misoperation of the vehicle is easily caused or irrelevant personnel enter the vehicle, and safety risks exist.
Disclosure of Invention
The invention provides a remote safety control method for a vehicle-mounted air conditioner of a new energy automobile, and aims to solve the problems.
The invention is realized in this way, a remote safety control system of vehicle-mounted air conditioner of new energy automobile, the system includes:
the mobile terminal is connected with the T-BOX in a remote communication mode, the T-BOX is connected with the PTC controller and the VCU of the whole vehicle controller through CAN lines, the PTC controller is connected with the battery management system BMS, the air conditioner control system CLM and the motor controller MCU through CAN lines, and the battery management system BMS is connected with the main negative relay, the pre-charging relay and the main positive relay in a communication mode.
The invention discloses a remote safety control method of a vehicle-mounted air conditioner of a new energy automobile, which comprises the following steps:
the method comprises the steps that a mobile terminal sends an air conditioner remote control instruction, a T-box uploads the remote controller instruction to a CAN bus, a PTC controller and a VCU of a vehicle controller read the air conditioner remote control instruction from the CAN bus, the VCU of the vehicle controller sleeps based on the air conditioner remote control instruction, and the PTC controller controls a battery management system BMS, an air conditioner control system CLM and a motor controller MCU based on the air conditioner remote control instruction so that a vehicle-mounted air conditioner is in a state of the air conditioner remote control instruction request;
the remote controller instructions include: an air conditioner remote start instruction and an air conditioner remote shut-down instruction.
Further, when the remote controller instruction is an air conditioner remote start instruction, the method specifically comprises the following steps:
s11, the mobile terminal sends an air conditioner remote starting instruction, and the air conditioner remote starting instruction comprises a preset temperature value;
s12, the T-BOX receives an air conditioner remote starting instruction sent by the mobile terminal, converts the air conditioner remote starting instruction into a CAN communication instruction message and uploads the CAN communication instruction message to a CAN bus;
s13, reading an air conditioner remote starting instruction from the CAN bus by the PTC controller and the VCU of the whole vehicle controller;
s14, the vehicle control unit VCU sleeps based on the air conditioner remote start instruction, the PTC controller controls the battery management system BMS, the air conditioner control system CLM and the motor controller MCU based on the air conditioner remote start instruction, namely the PTC controller enters a remote control mode;
s15, the PTC controller sends a battery connection instruction to a battery management system BMS based on a CAN communication instruction message of the air conditioner remote start instruction;
s16, the battery management system BMS sequentially executes the following steps based on the battery connection command:
s161, controlling the main negative relay of the battery pack to pull in;
s162, controlling a pre-charging relay of the battery pack to suck;
s163, monitoring the high-voltage direct-current voltage output by the battery pack by the battery management system, and executing the step S164 when the high-voltage direct-current voltage of the battery pack reaches a preset pre-charging voltage value;
s164, controlling the main negative relay of the battery pack to pull in;
s165, controlling a pre-charging relay of the battery pack to be disconnected;
s17, the PTC controller sends a fan starting command to the air conditioner control system CLM;
s18, starting a fan of the air outlet by the air conditioner control system CLM;
and S19, the PTC controller controls the PTC heater to heat at full power until the temperature in the passenger compartment reaches a preset temperature, and the PTC controller enters a constant temperature control mode.
Further, after step S13, the method further includes:
s110, the PTC controller judges whether a whole vehicle key signal exists or not based on a CAN communication instruction of an air conditioner remote starting instruction, if the whole vehicle key signal exists, the step S111 is executed, and if the whole vehicle key signal does not exist, the step S14 is executed;
s111, uploading the remote control failure state to a T-Box through a CAN bus by the PTC controller;
and S112, the T-Box receives and analyzes the remote control failure state message uploaded by the PTC controller, packages the message into remote communication data, uploads the remote communication data to the mobile terminal, and the PTC controller enters a sleep mode to wake up the VCU of the vehicle controller.
Further, when the remote controller command is an air conditioner remote closing command, the method specifically comprises the following steps:
s21, the mobile terminal sends an air conditioner remote closing instruction;
s22, the T-BOX receives an air conditioner remote closing instruction sent by the mobile terminal, converts the air conditioner remote closing instruction into a CAN communication instruction message and uploads the CAN communication instruction message to a CAN bus;
s23, reading an air conditioner remote closing instruction from a CAN bus by the PTC controller and the VCU of the vehicle controller, enabling the VCU of the vehicle controller to sleep based on the air conditioner remote closing instruction, and enabling the PTC controller to control the battery management system BMS, the air conditioner control system CLM and the motor controller MCU based on the air conditioner remote closing instruction, namely enabling the PTC controller to enter a remote control mode;
s24, the PTC controller controls the PTC heater to stop heating based on the CAN communication command message of the air conditioner remote closing command, and sends a fan closing command to the air conditioner control system CLM;
s25, the air conditioner control system CLM closes the fan of the air outlet;
s26, the PTC controller sends a complete vehicle high-voltage electricity disconnection instruction to a battery management system BMS;
s27, the battery management system BMS sequentially executes the following steps based on the whole vehicle high-voltage power disconnection instruction:
s271, controlling a main negative relay of the battery pack to be disconnected;
s272, controlling the main positive relay of the battery pack to be disconnected;
s28, the PTC controller requests the motor controller MCU to enter an active discharge mode;
and S29, the motor controller MCU enters an active discharge mode until the bus capacitor voltage of the motor controller MCU is less than 60V, and the motor controller MCU and the PTC controller sequentially enter a sleep mode.
Further, when the PTC controller is in the remote control mode, if a remote heating fault signal occurs, the following steps are performed:
s31, the PTC controller controls the PTC heater to stop heating;
s32, the PTC controller sends a remote heating fault signal to the T-Box;
s33, the T-Box feeds back the analyzed remote heating fault signal to the mobile terminal and sends a fan closing instruction to the air conditioner control system CLM;
s34, the air conditioning control system CLM controls the fan at the air outlet to be closed based on the air supply fan closing instruction;
s35, the PTC controller sends a complete vehicle high-voltage electricity disconnection instruction to a battery management system BMS;
s36, the battery management system BMS sequentially executes the following steps based on the whole vehicle high-voltage power disconnection instruction:
s361, controlling a main negative relay of the battery pack to be disconnected;
s362, controlling the main positive relay of the battery pack to be disconnected;
s37, the PTC controller requests the motor controller MCU to enter an active discharge mode;
and S38, the motor controller MCU enters an active discharge mode until the bus capacitor voltage of the motor controller MCU is less than 60V, and the motor controller MCU and the PTC controller sequentially enter a sleep mode to wake up the whole vehicle controller.
The remote safety control method of the vehicle-mounted air conditioner of the new energy automobile has the following beneficial effects:
1) the complete control flow and the safety check mechanism can ensure that the out-of-control of the whole vehicle cannot occur in the remote heating control process of the air conditioner;
2) in the process of remote air conditioner heating control, a VCU clock of a vehicle controller is in a dormant state, and during the period of starting and canceling heating of air conditioner remote heating control, a PTC controller is in a remote control mode to temporarily take over the control functions of a part of VCUs, such as: and sending a battery connection and disconnection command to the BMS, sending a command of entering an active discharge mode and a command of entering a sleep mode to the MCU, and not having partial control functions of the VCU after the PTC controller exits a remote control mode. Therefore, the control confusion caused by the cross of the control functions of the PTC controller and the VCU in the normal driving process is avoided.
3) The control mechanism CAN reduce the number of parts in a working state in the process of remote control heating to the maximum extent, and reduce the number of network nodes for CAN bus communication in the process of remote control heating, thereby reducing static power consumption and CAN bus communication load and reducing the probability of communication errors among all the parts participating in remote control heating.
Drawings
Fig. 1 is a schematic structural diagram of a remote safety control system of a vehicle-mounted air conditioner of a new energy vehicle according to an embodiment of the present invention;
fig. 2 is a first flowchart of a remote safety control method for a vehicle-mounted air conditioner of a new energy vehicle according to an embodiment of the present invention;
fig. 3 is a flowchart of a remote safety control method of a new energy vehicle-mounted air conditioner according to an embodiment of the present invention;
fig. 4 is a flow chart of a remote safety control method of a new energy vehicle-mounted air conditioner according to an embodiment of the present invention;
fig. 5 is a schematic circuit control diagram of a battery pack of a vehicle-mounted air conditioner of a new energy vehicle according to an embodiment of the present invention.
Detailed Description
The following detailed description of the embodiments of the present invention will be given in order to provide those skilled in the art with a more complete, accurate and thorough understanding of the inventive concept and technical solutions of the present invention.
Fig. 1 is a schematic structural diagram of a remote safety control system of a new energy vehicle-mounted air conditioner according to an embodiment of the present invention, and fig. 5 is a schematic battery pack circuit control diagram of the new energy vehicle-mounted air conditioner according to an embodiment of the present invention, and for convenience of description, only parts related to the embodiment of the present invention are shown.
The system comprises:
the mobile terminal is connected with the T-BOX in a remote communication mode, the T-BOX is connected with the PTC controller and the VCU of the whole vehicle controller through CAN lines, the PTC controller is connected with the battery management system BMS, the air conditioner control system CLM and the motor controller MCU through CAN lines, and the battery management system BMS is connected with the main negative relay, the pre-charging relay and the main positive relay in a communication mode.
Fig. 2 is a first flowchart of a remote safety control method for a vehicle-mounted air conditioner of a new energy vehicle according to an embodiment of the present invention, where the method specifically includes the following steps:
s11, the mobile terminal sends an air conditioner remote starting instruction, and the air conditioner remote starting instruction comprises a preset temperature value;
s12, the T-BOX receives an air conditioner remote starting instruction sent by the mobile terminal, converts the air conditioner remote starting instruction into a CAN communication instruction message and uploads the CAN communication instruction message to a CAN bus;
s13, the PTC controller reads a CAN communication instruction message of the air conditioner remote start instruction from the CAN bus;
s14, the vehicle control unit VCU sleeps based on the air conditioner remote start instruction, the PTC controller controls the battery management system BMS, the air conditioner control system CLM and the motor controller MCU based on the air conditioner remote start instruction, namely the PTC controller enters a remote control mode;
s15, the PTC controller sends a battery connection instruction to the battery management system BMS based on the air conditioner remote start instruction;
s16, the battery management system BMS sequentially executes the following steps based on the battery connection command:
s161, controlling the main negative relay of the battery pack to pull in;
s162, controlling a pre-charging relay of the battery pack to suck;
s163, monitoring the high-voltage direct-current voltage output by the battery pack by the battery management system, and executing the step S164 when the high-voltage direct-current voltage of the battery pack reaches a preset pre-charging voltage value;
s164, controlling the main negative relay of the battery pack to pull in;
s165, controlling a pre-charging relay of the battery pack to be disconnected;
s17, the PTC controller sends a fan starting command to the air conditioner control system CLM;
s18, starting a fan of the air outlet by the air conditioner control system CLM;
and S19, the PTC controller controls the PTC heater to heat at full power until the temperature in the passenger compartment reaches a preset temperature, and the PTC controller enters a constant temperature control mode.
In the embodiment of the present invention, after step S13, the method further includes:
s110, the PTC controller judges whether a whole vehicle key signal exists or not based on a CAN communication instruction of an air conditioner remote starting instruction, if the whole vehicle key signal exists, the step S111 is executed, and if the whole vehicle key signal does not exist, the step S14 is executed;
s111, uploading the remote control failure state to a T-Box through a CAN bus by the PTC controller;
and S112, the T-Box receives and analyzes the remote control failure state message uploaded by the PTC controller, packages the message into remote communication data, uploads the remote communication data to the mobile terminal, and the PTC controller enters a sleep mode to wake up the VCU of the vehicle controller.
Fig. 3 is a flowchart of a remote safety control method for a vehicle-mounted air conditioner of a new energy vehicle according to an embodiment of the present invention, where the method specifically includes the following steps:
s21, the mobile terminal sends an air conditioner remote closing instruction;
s22, the T-BOX receives an air conditioner remote closing instruction sent by the mobile terminal, converts the air conditioner remote closing instruction into a CAN communication instruction message and uploads the CAN communication instruction message to a CAN bus;
s23, reading an air conditioner remote closing instruction from a CAN bus by the PTC controller and the VCU of the vehicle controller, enabling the VCU of the vehicle controller to sleep based on the air conditioner remote closing instruction, and enabling the PTC controller to control the battery management system BMS, the air conditioner control system CLM and the motor controller MCU based on the air conditioner remote closing instruction, namely enabling the PTC controller to enter a remote control mode;
s24, controlling the PTC heater to stop heating based on the air conditioner remote closing instruction, and sending a fan closing instruction to the air conditioner control system CLM;
s25, the air conditioner control system CLM closes the fan of the air outlet;
s26, the PTC controller sends a complete vehicle high-voltage electricity disconnection instruction to a battery management system BMS;
s27, the battery management system BMS sequentially executes the following steps based on the whole vehicle high-voltage power disconnection instruction:
s271, controlling a main negative relay of the battery pack to be disconnected;
s272, controlling the main positive relay of the battery pack to be disconnected;
s28, the PTC controller requests the motor controller MCU to enter an active discharge mode, wherein the active discharge mode refers to the state that the bus capacitor of the motor controller MCU is in a discharge state;
and S29, the motor controller MCU enters an active discharge mode until the bus capacitor voltage of the motor controller MCU is less than 60V, the motor controller MCU and the PTC controller sequentially enter a sleep mode to wake up the VCU of the whole vehicle controller.
Fig. 4 is a flow chart of a remote safety control method of a new energy vehicle-mounted air conditioner according to an embodiment of the present invention, where the method specifically includes the following steps:
s31, in the process that the PTC controller is in the remote control mode, if a remote heating fault signal occurs, the PTC controller controls the PTC heater to stop heating;
the remote heating fault signal comprises: a precharge failure fault, a battery management system BMS fault, a main negative relay, a precharge relay or a main positive relay pull-in fault, or an air conditioner control system CLM fault;
s32, the PTC controller sends a remote heating fault signal to the T-Box;
s33, the T-Box feeds back the analyzed remote heating fault signal to the mobile terminal and sends a fan closing instruction to the air conditioner control system CLM;
s34, the air conditioning control system CLM controls the fan at the air outlet to be closed based on the air supply fan closing instruction;
s35, the PTC controller sends a complete vehicle high-voltage electricity disconnection instruction to a battery management system BMS;
s36, the battery management system BMS sequentially executes the following steps based on the whole vehicle high-voltage power disconnection instruction:
s361, controlling a main negative relay of the battery pack to be disconnected;
s362, controlling the main positive relay of the battery pack to be disconnected;
s37, the PTC controller requests the motor controller MCU to enter an active discharge mode, wherein the active discharge mode refers to the state that the bus capacitor of the motor controller MCU is in a discharge state;
and S38, the motor controller MCU enters an active discharge mode until the bus capacitor voltage of the motor controller MCU is less than 60V, the motor controller MCU and the PTC controller sequentially enter a sleep mode to wake up the VCU of the whole vehicle controller.
The remote safety control method of the vehicle-mounted air conditioner of the new energy automobile has the following beneficial effects:
1) the complete control flow and the safety check mechanism can ensure that the out-of-control of the whole vehicle cannot occur in the remote heating control process of the air conditioner;
2) in the process of remote air conditioner heating control, a VCU clock of a vehicle controller is in a dormant state, and during the period of starting and canceling heating of air conditioner remote heating control, a PTC controller is in a remote control mode to temporarily take over the control functions of part of VCUs, such as: and sending a battery connection and disconnection command to the BMS, sending a command of entering an active discharge mode and a command of entering a sleep mode to the MCU, and not having partial control functions of the VCU after the PTC controller exits a remote control mode. Therefore, the control confusion caused by the cross of the control functions of the PTC controller and the VCU in the normal driving process is avoided.
3) The control mechanism CAN reduce the number of parts in a working state in the process of remote control heating to the maximum extent, and reduce the number of network nodes for CAN bus communication in the process of remote control heating, thereby reducing static power consumption and CAN bus communication load and reducing the probability of communication errors among all the parts participating in remote control heating.
The invention has been described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the specific implementation in the above-described manner, and it is within the scope of the invention to apply the inventive concept and solution to other applications without substantial modification.
Claims (3)
1. A remote safety control method of a new energy automobile vehicle-mounted air conditioner is characterized in that a remote safety control system of the new energy automobile vehicle-mounted air conditioner comprises the following steps: the mobile terminal is in remote communication connection with the T-BOX, the T-BOX is connected with the PTC controller and the VCU of the whole vehicle controller through CAN lines, the PTC controller is connected with the battery management system BMS, the air conditioner control system CLM and the motor controller MCU through CAN lines, and the battery management system BMS is in communication connection with the main negative relay, the pre-charging relay and the main positive relay; the remote safety control method of the vehicle-mounted air conditioner of the new energy automobile based on the remote safety control system of the vehicle-mounted air conditioner of the new energy automobile comprises the following steps:
the method comprises the steps that a mobile terminal sends an air conditioner remote control instruction, a T-BOX uploads the remote controller instruction to a CAN bus, a PTC controller and a VCU of a vehicle controller read the air conditioner remote control instruction from the CAN bus, the VCU of the vehicle controller sleeps based on the air conditioner remote control instruction, and the PTC controller controls a battery management system BMS, an air conditioner control system CLM and a motor controller MCU based on the air conditioner remote control instruction so that a vehicle-mounted air conditioner is in a state of the air conditioner remote control instruction request;
the remote controller instructions include: an air conditioner remote starting instruction and an air conditioner remote closing instruction are given;
when the remote controller instruction is an air conditioner remote starting instruction, the method specifically comprises the following steps:
s11, the mobile terminal sends an air conditioner remote starting instruction, and the air conditioner remote starting instruction comprises a preset temperature value;
s12, the T-BOX receives an air conditioner remote starting instruction sent by the mobile terminal, converts the air conditioner remote starting instruction into a CAN communication instruction message and uploads the CAN communication instruction message to a CAN bus;
s13, reading an air conditioner remote starting instruction from the CAN bus by the PTC controller and the VCU of the whole vehicle controller;
s14, the vehicle control unit VCU sleeps based on the air conditioner remote start instruction, the PTC controller controls the battery management system BMS, the air conditioner control system CLM and the motor controller MCU based on the air conditioner remote start instruction, namely the PTC controller enters a remote control mode;
s15, the PTC controller sends a battery connection instruction to the battery management system BMS based on the air conditioner remote start instruction;
s16, the battery management system BMS sequentially executes the following steps based on the battery connection command:
s161, controlling the main negative relay of the battery pack to pull in;
s162, controlling a pre-charging relay of the battery pack to suck;
s163, monitoring the high-voltage direct-current voltage output by the battery pack by the battery management system, and executing the step S164 when the high-voltage direct-current voltage of the battery pack reaches a preset pre-charging voltage value;
s164, controlling the main negative relay of the battery pack to pull in;
s165, controlling a pre-charging relay of the battery pack to be disconnected;
s17, the PTC controller sends a fan starting command to the air conditioner control system CLM;
s18, starting a fan of the air outlet by the air conditioner control system CLM;
s19, the PTC controller controls the PTC heater to heat at full power until the temperature in the passenger compartment reaches a preset temperature, and the PTC controller enters a constant temperature control mode;
when the remote controller instruction is an air conditioner remote closing instruction, the method specifically comprises the following steps:
s21, the mobile terminal sends an air conditioner remote closing instruction;
s22, the T-BOX receives an air conditioner remote closing instruction sent by the mobile terminal, converts the air conditioner remote closing instruction into a CAN communication instruction message and uploads the CAN communication instruction message to a CAN bus;
s23, reading an air conditioner remote closing instruction from a CAN bus by the PTC controller and the VCU of the vehicle controller, enabling the VCU of the vehicle controller to sleep based on the air conditioner remote closing instruction, and enabling the PTC controller to control the battery management system BMS, the air conditioner control system CLM and the motor controller MCU based on the air conditioner remote closing instruction, namely enabling the PTC controller to enter a remote control mode;
s24, the PTC controller controls the PTC heater to stop heating based on the CAN communication command message of the air conditioner remote closing command, and sends a fan closing command to the air conditioner control system CLM;
s25, the air conditioner control system CLM closes the fan of the air outlet;
s26, the PTC controller sends a complete vehicle high-voltage electricity disconnection instruction to a battery management system BMS;
s27, the battery management system BMS sequentially executes the following steps based on the whole vehicle high-voltage power disconnection instruction:
s271, controlling a main negative relay of the battery pack to be disconnected;
s272, controlling the main positive relay of the battery pack to be disconnected;
s28, the PTC controller requests the motor controller MCU to enter an active discharge mode;
and S29, the motor controller MCU enters an active discharge mode until the bus capacitor voltage of the motor controller MCU is less than 60V, the motor controller MCU and the PTC controller sequentially enter a sleep mode to wake up the VCU of the whole vehicle controller.
2. The remote safety control method for the vehicle-mounted air conditioner of the new energy automobile as claimed in claim 1, further comprising, after step S13:
s110, the PTC controller judges whether a whole vehicle key signal exists or not based on the air conditioner remote starting instruction, if so, the step S111 is executed, and if not, the step S14 is executed;
s111, uploading the remote control failure state to a T-Box through a CAN bus by the PTC controller;
and S112, the T-Box receives and analyzes the remote control failure state message uploaded by the PTC controller, packages the message into remote communication data, uploads the remote communication data to the mobile terminal, and the PTC controller enters a sleep mode to wake up the VCU of the vehicle controller.
3. The remote safety control method of the vehicle-mounted air conditioner of the new energy automobile as claimed in claim 2, wherein during the process that the PTC controller is in the remote control mode, if a remote heating fault signal occurs, the following steps are performed:
s31, the PTC controller controls the PTC heater to stop heating;
s32, the PTC controller sends a remote heating fault signal to the T-Box;
s33, the T-Box feeds back the analyzed remote heating fault signal to the mobile terminal and sends a fan closing instruction to the air conditioner control system CLM;
s34, the air conditioning control system CLM controls the fan at the air outlet to be closed based on the air supply fan closing instruction;
s35, the PTC controller sends a complete vehicle high-voltage electricity disconnection instruction to a battery management system BMS;
s36, the battery management system BMS sequentially executes the following steps based on the whole vehicle high-voltage power disconnection instruction:
s361, controlling a main negative relay of the battery pack to be disconnected;
s362, controlling the main positive relay of the battery pack to be disconnected;
s37, the PTC controller requests the motor controller MCU to enter an active discharge mode;
and S38, the motor controller MCU enters an active discharge mode until the bus capacitor voltage of the motor controller MCU is less than 60V, and the motor controller MCU and the PTC controller sequentially enter a sleep mode to wake up the whole vehicle controller.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911423909.7A CN111016579B (en) | 2019-12-31 | 2019-12-31 | Remote safety control system and method for vehicle-mounted air conditioner of new energy automobile |
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| CN201911423909.7A CN111016579B (en) | 2019-12-31 | 2019-12-31 | Remote safety control system and method for vehicle-mounted air conditioner of new energy automobile |
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| CN111016579A CN111016579A (en) | 2020-04-17 |
| CN111016579B true CN111016579B (en) | 2021-08-13 |
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| CN112026479A (en) * | 2020-08-31 | 2020-12-04 | 重庆长安汽车股份有限公司 | Automobile air conditioning system and control method thereof |
| CN112757865B (en) * | 2021-01-04 | 2022-11-15 | 东风柳州汽车有限公司 | Vehicle-mounted air conditioner control system |
| CN113589171B (en) * | 2021-06-30 | 2023-12-01 | 中汽研汽车检验中心（天津）有限公司 | Hard wire fault injection test method for battery management system |
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