CN106394168A - Air-conditioner control system capable of being started in timing manner, of electric automobile, and control method - Google Patents

Abstract

The invention discloses an electric vehicle air conditioner control system capable of timing start and a control method. The control process is: the driver turns on the air conditioner timing start function, sets the timing start time and duration, and sets the air conditioner start mode; judges whether to start the air conditioner system according to the car gear position, the charging state of the car and whether it reaches the set time . The present invention integrates a clock module inside the air-conditioning controller, which can turn on the air-conditioning system at a specific time according to the setting of the user when the electric vehicle is charging, and complete the preheating or pre-cooling of the air-conditioning before the user goes out. Complete the air conditioning in the car before using the car to improve the comfort of electric cars.

Description

An electric vehicle air conditioner control system and control method capable of timing start

technical field

The invention belongs to the technical field of automobile control, and in particular relates to an electric automobile air conditioner control system and control method capable of timing start.

Background technique

With the rapid development of electric vehicles, automotive air conditioning systems, as one of the core components that directly affect the performance of electric vehicles, are increasingly concerned by users for their performance and ease of operation. Existing automobiles require the user to enter the car to operate the car air conditioner in hot summer or cold winter, which causes the user to endure the torment of extreme heat or severe cold for the first ten minutes of waiting for the car air conditioner to start running.

In response to the above problems, turning on the car air conditioning system in advance to preheat or precool it in advance can prevent drivers and passengers from enduring extreme heat and severe cold. However, due to the limited energy storage of the high-voltage battery of pure electric vehicles, and the air-conditioning system is a large power consumer, the preheating or precooling of the air conditioner will affect its mileage and bring great inconvenience to the travel of drivers and passengers.

Contents of the invention

The object of the present invention is to provide a timing start-up electric vehicle air conditioning control system and control method in order to solve the shortcomings of the above-mentioned background technology.

The technical solution adopted in the present invention is: an electric vehicle air-conditioning control system that can be started at regular intervals, including a vehicle controller, a battery management system, a charger, an air-conditioning controller, a PTC module, an electric compressor, an air door actuator group and sensors group, the air-conditioning controller performs information interaction with the vehicle controller, battery management system, and charger through the CAN network, and the air-conditioning controller controls the PTC module, electric compressor, air door actuator group and sensor group through hard wires. The air conditioner controller includes MCU control unit, power supply module, CAN communication module, sensor acquisition module, actuator control module, PTC heater control module, electric compressor control module, blower control module and a clock that can set the start time and duration of the air conditioner module, air conditioner operation and display module, the power module, CAN communication module, sensor acquisition module, actuator control module, PTC heater control module, electric compressor control module, blower control module, clock module, air conditioner operation and display module They are respectively electrically connected to the MCU control unit.

An electric vehicle air conditioner control method based on the above-mentioned air conditioner control system that can be started at a fixed time. The control process is as follows: the user turns on the function of the air conditioner at a fixed time, sets the time and duration of the timed start, and sets the start mode of the air conditioner; Reach the set time to judge whether to start the air conditioning system.

Further, the condition for judging the activation of the air conditioning system is: the vehicle is in a charging state and reaches the activation time set by the user.

Further, when judging whether to activate the air conditioning system, the gear position of the car is also detected. When the car gear is in the parking gear, it is judged to start the air conditioning system. When the car gear is in the non-parking gear, it is judged not to start the air conditioning system.

Furthermore, when it is judged that the air conditioning system is activated, the maximum power used by the air conditioning system is judged according to the current power of the car battery: when the current power of the car battery is less than A, turn off the air conditioning system; when the current power of the car battery is greater than A and less than B, adjust The maximum power used by the air-conditioning system is 50% of the rated power of the battery; when the current power of the car battery is greater than B, adjust the maximum power used by the air-conditioning system to be the rated power of the car battery.

The present invention integrates a clock module inside the air-conditioning controller, which can turn on the air-conditioning system at a specific time according to the setting of the user when the electric vehicle is charging, and complete the preheating or pre-cooling of the air-conditioning before the user goes out. Complete the air conditioning in the car before using the car, avoiding the user to endure the extreme heat or severe cold at the beginning of entering the car, and at the same time reduce the impact on the mileage caused by the preheating or precooling of the air conditioner in advance, reduce the consumption of battery power, and improve the battery life. Comfort in car use.

Description of drawings

Fig. 1 is a functional block diagram of the control system of the present invention.

Fig. 2 is a functional block diagram of the air conditioner controller of the present invention.

Fig. 3 is a control flowchart of the present invention.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments to facilitate a clear understanding of the present invention, but they do not limit the present invention.

As shown in Figure 1, the electric vehicle air conditioning control system that can be started at regular intervals in the present invention includes a vehicle controller (VCU), a battery management system (BMS), a charger, an air conditioner controller, a PTC module, an electric compressor, and a damper actuator group and sensor group, the air conditioner controller is connected to the vehicle controller, BMS battery management system, and charger through the CAN network for information interaction, and the air conditioner controller controls the PTC module, electric compressor, damper actuator group and sensor group.

As shown in Figure 2, the air conditioner controller includes an MCU control unit, a power supply module, a CAN communication module, a sensor acquisition module, an actuator control module, a PTC heater control module, an electric compressor control module, a blower control module, and an air conditioner that can be set Clock module for start-up time and duration, air conditioner operation and display module, the power supply module, CAN communication module, sensor acquisition module, actuator control module, PTC heater control module, electric compressor control module, blower control module, clock module The air conditioner operation and display modules are respectively electrically connected to the MCU control unit.

As shown in Figure 3, the control process of the above-mentioned air conditioner control system to realize timing start is as follows: the user turns on the air conditioner timing start function, sets the timing start time and duration, and sets the air conditioner start mode; according to the car gear position, the charging state of the car and Whether it reaches the set time to judge whether to start the air conditioning system.

The above conditions for judging to activate the air conditioning system are: the vehicle gear is in the parking gear, the vehicle is in the charging state, and the activation time set by the user is reached.

In the above scheme, in order to reduce the consumption of the car battery and ensure the service life of the battery, after the air-conditioning system is started, the maximum power used by the air-conditioning system can be judged according to the current power of the car battery: when the current power of the car battery is less than A, turn off Air-conditioning system; when the current power of the car battery is greater than A and less than B, adjust the maximum power used by the air-conditioning system to 50% of the rated power of the battery; when the current power of the car battery is greater than B, adjust the maximum power used by the air-conditioning system to be the rated power of the car battery power. The values of A and B are set according to actual needs, such as A can be set between 10-20%, preferably 15%, and B can be set between 40-60%, preferably 50%.

The specific control process is as follows:

301. The user turns on the timing start function of the air conditioner.

302. The user sets the timing start time and duration through the air conditioner panel controller.

303. The user sets the air conditioner start mode, cooling mode, heating mode or defogging and defrosting mode through the air conditioner panel controller.

304. After the user completes the setting, the clock module inside the air conditioner controller starts to run.

305. Determine whether the car gear is in the parking gear, whether the car is in the charging state, and whether the user's timer is up;

306. If it is judged that the car is in the parking gear, the car is in the charging state, and the start time set by the user is reached, then the air conditioning system is started, and the air conditioning controller completes the control of the air conditioning system according to the mode set by the user; otherwise, the air conditioning system does not start.

The content not described in detail in this specification belongs to the prior art known to those skilled in the art.

Claims (5)

1. An electric vehicle air-conditioning control system capable of timing start, characterized in that: it comprises a vehicle controller, a battery management system, a charger, an air-conditioning controller, a PTC module, an electric compressor, a damper actuator group and a sensor group, The air conditioner controller performs information interaction with the vehicle controller, battery management system, and charger through the CAN network. The air conditioner controller controls the PTC module, electric compressor, damper actuator group and sensor group through hard wires. The controller includes MCU control unit, power supply module, CAN communication module, sensor acquisition module, actuator control module, PTC heater control module, electric compressor control module, blower control module and a clock module that can set the start time and duration of the air conditioner, Air conditioner operation and display module, the power module, CAN communication module, sensor acquisition module, actuator control module, PTC heater control module, electric compressor control module, blower control module, clock module, air conditioner operation and display module respectively The MCU control unit is electrically connected. 2. An electric vehicle air-conditioning control method capable of timing start based on the air-conditioning control system according to claim 1, characterized in that: the user turns on the air-conditioning timing start function, sets the timing start time and duration, and sets the air-conditioning start-up mode; According to the charging state of the car and whether it reaches the set time to judge whether to start the air conditioning system. 3 . The method for controlling the air conditioner of an electric vehicle capable of timing start according to claim 2 , wherein the condition for judging the start of the air conditioner system is: the car is in a charging state and reaches the start time set by the user. 4 . 4. A method for controlling the air conditioner of an electric vehicle that can be started at a fixed time according to claim 2, wherein the vehicle gear position is also detected when judging whether to start the air conditioning system, and when the car gear is in the parking gear, it is judged to start the air conditioner. For the air conditioning system, when the vehicle gear is in a non-parking gear, it is judged not to activate the air conditioning system. 5. A method for controlling the air-conditioning of an electric vehicle that can be started at a fixed time according to claim 2, characterized in that: when the air-conditioning system is judged to be activated, the maximum power used by the air-conditioning system is judged according to the current electric quantity of the vehicle battery: when the vehicle battery is currently When the power is less than A, turn off the air-conditioning system; when the current power of the car battery is greater than A and less than B, adjust the maximum power used by the air-conditioning system to 50% of the rated power of the battery; when the current power of the car battery is greater than B, adjust the maximum power used by the air-conditioning system The power is the car battery rated power.