Vehicle remote control system and method

Abstract

The embodiment of the invention provides a vehicle remote control system and method, and relates to the field of vehicle remote control. The system comprises a remote information processor and a domain controller, the domain controller comprises a CAN wake-up chip, a power supply module, a main control chip and a domain control power distribution module, the domain control power distribution module comprises multiple independent power supply channels, and the remote information processor is used for receiving a remote wake-up instruction sent by a remote terminal. The CAN wake-up chip is used for outputting an enabling control signal to the power supply module, the power supply module is used for providing a working power supply for the main control chip, the main control chip is used for generating a corresponding control signal according to a target power-on instruction and outputting the control signal to the domain control power distribution module, and the domain control power distribution module is used for controlling the conduction of a corresponding power supply channel according to the control signal. Therefore, the corresponding functional parts in the vehicle can be selectively powered. Therefore, only the CAN wake-up chip is dormant, other parts are powered on as required, and key components of the whole vehicle are prevented from being in a powered dormant state for a long time.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicle remote control, in particular to a vehicle remote control system and method. BACKGROUND

[0002] At present, the remote control function of new energy vehicles is increasingly valued in the field of intelligent networked vehicles. In the prior art, the issuance of remote control instructions is often realized through communication between a remote terminal and a telematics box (T-BOX). After receiving the remote control instructions, the T-BOX wakes up key components such as the vehicle controller (VCU), the battery management system (BMS), and the integrated controller through the vehicle CAN network, and then issues remote control request instructions through the vehicle network to realize remote control of the vehicle.

[0003] However, this control method has obvious energy consumption problems. Since the implementation of the remote control function relies on the T-BOX to wake up the entire vehicle network, even in the absence of remote operation, the key components such as the vehicle controller, the battery management system, and the integrated controller must remain in a dormant state so that they can be awakened in time when needed. Although this dormant state has low power consumption, it still has some static current consumption, which can lead to increased energy loss of the vehicle's low-voltage storage battery over a long period of time, especially in the case of long-term parking of the vehicle, which can easily cause the low-voltage storage battery to be fed, thereby affecting the normal start and use of the vehicle. SUMMARY

[0004] In view of the above, the purpose of the embodiments of the present application is to provide a vehicle remote control system and method to at least partially improve the above problems.

[0005] To achieve the above purpose, the technical solutions adopted by the embodiments of the present application are as follows: In a first aspect, the embodiments of the present application provide a vehicle remote control system, which comprises a telematics box and a domain controller, the domain controller comprising a CAN wake-up chip, a power supply module, a master control chip, and a domain control power distribution module; the CAN wake-up chip, the power supply module, and the domain control power distribution module are electrically connected to a vehicle low-voltage storage battery; the domain control power distribution module comprises multiple independent power supply channels. The telematics box is configured to receive a remote wake-up instruction sent by a remote terminal and send the remote wake-up instruction to the CAN wake-up chip. The CAN wake-up chip is configured to switch from a dormant state to a normal working state after receiving the remote wake-up instruction and output an enable control signal to the power supply module. The power supply module is configured to enter a normal working state to provide working power supply for the master control chip after receiving the enable control signal; The master control chip is configured to receive a target power-on instruction and generate a corresponding control signal according to the target power-on instruction, and output the control signal to the domain control power distribution module; The domain control power distribution module is configured to control the corresponding power supply channel to be turned on according to the control signal, so as to selectively supply power to the corresponding functional components in the vehicle.

[0006] Optionally, the vehicle remote control system further comprises a vehicle controller; The master control chip is configured to generate a vehicle controller power-on control signal after power-on working, and output the vehicle controller power-on control signal to the domain control power distribution module to control the vehicle controller to work in power-on state; The vehicle controller is configured to receive a remote control instruction issued by the remote information processor, and generate a target power-on instruction according to the remote control instruction, and send the target power-on instruction to the master control chip; The master control chip is further configured to receive the target power-on instruction sent by the vehicle controller, and generate a corresponding control signal according to the target power-on instruction, and output the control signal to the domain control power distribution module.

[0007] Optionally, the domain controller further comprises a sensor power supply module; The power supply module is further configured to provide working power supply for the sensor power supply module after receiving the enable control signal; The sensor power supply module is configured to supply power to each sensor in the vehicle.

[0008] Optionally, the remote control instruction comprises a remote air conditioner control instruction; the remote air conditioner control instruction comprises a target indoor temperature; the sensor comprises a cabin temperature sensor; The vehicle controller is configured to acquire an indoor temperature detected by the cabin temperature sensor, and determine whether to execute the remote air conditioner control instruction according to the target indoor temperature and the indoor temperature; The vehicle controller is further configured to generate a target power-on instruction according to the remote air conditioner control instruction when it is determined that the remote air conditioner control instruction needs to be executed; the target components in the target power-on instruction comprise a battery management system and an air conditioner panel.

[0009] Optionally, the remote control instruction comprises a remote battery heating instruction; the remote battery heating instruction comprises a target battery temperature; the sensor comprises a battery temperature sensor; The vehicle controller is configured to acquire a battery temperature detected by the battery temperature sensor, and determine whether to execute the remote battery heating instruction according to the battery target temperature and the battery temperature. The vehicle controller is further configured to generate a target power-on instruction according to the remote battery heating instruction when it is determined that the remote battery heating instruction is needed; and the target components in the target power-on instruction include a battery management system.

[0010] Optionally, the telematics processor is further configured to monitor a voltage of the vehicle low-voltage storage battery; and generate a low-voltage power compensation control instruction when the voltage is lower than a set threshold, and send the low-voltage power compensation control instruction to the vehicle controller. The vehicle controller is configured to generate a target power-on instruction according to the low-voltage power compensation control instruction, and send the target power-on instruction to the master control chip. The master control chip is further configured to receive the target power-on instruction sent by the vehicle controller, and generate a wake-up integrated controller control signal according to the target power-on instruction, and output the wake-up integrated controller control signal to the domain control power distribution module.

[0011] Optionally, the power supply module includes a DC-DC conversion circuit. The DC-DC conversion circuit is configured to convert the voltage of the vehicle low-voltage storage battery into a voltage level suitable for the operation of the master control chip and the sensor power supply module.

[0012] Optionally, the domain control power distribution module includes a plurality of high-side drive chips, and each power supply channel corresponds to an output channel of a high-side drive chip.

[0013] Optionally, the master control chip is further configured to receive a sleep instruction, and disconnect all the power supply channels of the domain control power distribution module. The master control chip is further configured to send the sleep instruction to the CAN wake-up chip. The CAN wake-up chip is further configured to receive the sleep instruction, and output a de-enable control signal to the power supply module to disconnect the power supply of the master control chip by the power supply module, and enter a sleep state.

[0014] In a second aspect, an embodiment of the present application provides a vehicle remote control method applied to a vehicle remote control system, the vehicle remote control system including a telematics processor and a domain controller, the domain controller including a CAN wake-up chip, a power supply module, a master control chip, and a domain control power distribution module; the CAN wake-up chip, the power supply module, and the domain control power distribution module are electrically connected with a vehicle low-voltage storage battery respectively; the domain control power distribution module includes a plurality of independent power supply channels; and the method includes: The remote information processor receives a remote wake-up instruction sent by a remote terminal and sends the remote wake-up instruction to the CAN wake-up chip; The CAN wake-up chip switches from a sleep state to a normal working state after receiving the remote wake-up instruction and outputs an enable control signal to the power supply module; The power supply module enters a normal working state after receiving the enable control signal and provides working power supply for the master control chip; The master control chip receives a target power-on instruction and generates a corresponding control signal according to the target power-on instruction and outputs the control signal to the domain control power distribution module; The domain control power distribution module controls the corresponding power supply channel to be turned on according to the control signal to selectively supply power to the corresponding functional components in the vehicle.

[0015] The vehicle remote control system and method provided by the embodiment of the application receives a remote wake-up instruction through a remote information processor, triggers a power supply module to supply power to a master control chip by a CAN wake-up chip, and then controls a domain control power distribution module to selectively turn on a plurality of independent power supply channels, so as to remotely, on-demand and low-power wake up and supply power to functional components in a vehicle.

[0016] In order to make the above objectives, characteristics and advantages of the present application more apparent, the following will describe a preferred embodiment in detail, and the accompanying drawings will be referred to, as follows. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some of the embodiments of the application, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0018] Figure 1 A schematic structural block diagram of a vehicle remote control system provided by the embodiment of the application is shown in the figure; Figure 2 Another schematic structural block diagram of a vehicle remote control system provided by the embodiment of the application is shown in the figure; Figure 3 Another schematic structural block diagram of a vehicle remote control system provided by the embodiment of the application is shown in the figure; Figure 4 A schematic structural block diagram of a vehicle remote control method provided by the embodiment of the application is shown in the figure.

[0019] Icon: 10-vehicle remote control system; 110-remote information processor; 120-domain controller; 121-CAN wake-up chip; 122-power supply module; 123-master control chip; 124-domain control power distribution module; 125-sensor power supply module; 130-vehicle controller; 20-remote terminal; 30-vehicle low-voltage storage battery. DETAILED DESCRIPTION

[0020] In order to make the objects, technical solutions, and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings of the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0022] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. Meanwhile, in the description of the present application, the terms "first", "second", and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0023] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. Meanwhile, in the description of the present application, the terms "first", "second", and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0024] As described in the background, in the prior art, when the new energy vehicle is in hibernation, the key components such as the vehicle controller, the battery management system, and the integrated controller are often in hibernation with power on, and there is still a certain static current consumption in hibernation.

[0025] Based on the above, the embodiment of the present application provides a vehicle remote control system and method, by only allowing the CAN wake-up chip in the domain controller to be in sleep, when waking up, the domain control power distribution module is used to supply power to different functional components on demand, avoiding the long-term sleep state of the key components of the vehicle, which can effectively reduce the static current of the vehicle, reduce the energy consumption of the low-voltage storage battery, and prolong the service life of the battery.

[0026] Next, the vehicle remote control system provided by the present application is exemplarily described. Figure 1 The vehicle remote control system 10 includes a telematics processor 110 and a domain controller 120, the domain controller 120 includes a CAN wake-up chip 121, a power supply module 122, a master control chip 123 and a domain control power distribution module 124; the CAN wake-up chip 121, the power supply module 122 and the domain control power distribution module 124 are respectively electrically connected with the vehicle low-voltage storage battery 30; the domain control power distribution module 124 includes multiple independent power supply channels.

[0027] The telematics processor 110 is used to receive the remote wake-up instruction sent by the remote terminal 20, and send the remote wake-up instruction to the CAN wake-up chip 121.

[0028] The CAN wake-up chip 121 is used to switch from the sleep state to the normal working state after receiving the remote wake-up instruction, and output an enable control signal to the power supply module 122.

[0029] The power supply module 122 is used to enter the normal working state after receiving the enable control signal, and provide working power supply for the master control chip 123.

[0030] The master control chip 123 is used to receive the target power-on instruction, and generate a corresponding control signal according to the target power-on instruction, and output the control signal to the domain control power distribution module 124.

[0031] The domain control power distribution module 124 is used to control the conduction of the corresponding power supply channel according to the control signal, so as to selectively supply power to the corresponding functional components in the vehicle.

[0032] When the vehicle is processing sleep, only the telematics processor 110 and the CAN wake-up chip 121 in the domain controller 120 of the whole vehicle are powered on, and the rest of the components are powered off, and the low-power sleep state is processed. When the remote terminal 20 sends a control instruction, the telematics processor 110 receives the instruction, for example, the user clicks "remote start air conditioner" through the mobile phone APP, and the instruction is received and transmitted through the telematics processor 110.

[0033] The CAN wake-up chip 121 is in a low-power sleep state, and is activated when a wake-up signal is received, switches from the sleep state to the working state, and sends an enable control signal to the power supply module 122 to make the power supply module 122 start working. After receiving the enable signal, the power supply module 122 enters a normal working state, and provides the voltage of the vehicle low-voltage storage battery 30 to the master control chip 123 to make the master control chip 123 start working, wherein the power supply module 122 can convert the voltage of the vehicle low-voltage storage battery 30 into a voltage conforming to the master control chip 123. After the master control chip 123 normally works, the master control chip 123 is responsible for receiving a target power-on instruction, and generating a control signal according to the instruction and sending the control signal to the domain control power distribution module 124. The domain control power distribution module 124 selectively turns on the corresponding power supply channel according to the control signal sent by the master control chip 123, to realize power supply to specific functional components.

[0034] The vehicle remote control system 10 is in a sleep state when not woken up, only the remote information processor 110 and the CAN wake-up chip 121 are powered on, and only relevant components are activated after receiving an instruction, which can effectively reduce static power consumption and prolong the endurance time of the low-voltage storage battery.

[0035] Since the domain controller 120 is only responsible for powering on each component, the vehicle controller 130 needs to be powered on first, and then the vehicle controller 130 analyzes which components need to be powered on and notifies the domain controller 120. Therefore, in a possible implementation manner, referring to Figure 2 , the vehicle remote control system 10 can further include the vehicle controller 130.

[0036] The master control chip 123 is configured to generate a vehicle controller 130 power-on control signal after power-on working, and output the vehicle controller 130 power-on control signal to the domain control power distribution module 124 to control the vehicle controller 130 to power on and work.

[0037] The vehicle controller 130 is configured to receive a remote control instruction issued by the remote information processor 110, generate a target power-on instruction according to the remote control instruction, and send the target power-on instruction to the master control chip 123.

[0038] The master control chip 123 is further configured to receive the target power-on instruction sent by the vehicle controller 130, and generate a corresponding control signal according to the target power-on instruction, and output the control signal to the domain control power distribution module 124.

[0039] After the master control chip 123 is powered by the power supply module 122, the master control chip 123 first generates a vehicle controller 130 power-on control signal, the vehicle controller 130 power-on control signal indicates that the vehicle controller 130 needs to be powered on, and the control signal is output to the domain control power distribution module 124, the domain control power distribution module 124 turns on the power supply channel of the vehicle controller 130 to make the vehicle controller 130 power on and work.

[0040] After the vehicle controller 130 is powered on, it receives remote control commands from the telematics processor 110 and generates a target power-on command based on the remote control command. For example, if the remote control command is to turn on the air conditioner and set the temperature to 25°C, the vehicle controller 130 will analyze the command and determine that the battery management system (which controls the power battery to power the compressor) and the air conditioning panel need to be activated. The generated target power-on command is to power on the battery management system and the air conditioning panel. This target power-on command is then sent to the main control chip 123.

[0041] The main control chip 123 receives the target power-on command, generates a corresponding control signal, and outputs the control signal to the domain control power distribution module 124. In the above example, the control signal generated by the main control chip 123 controls the power supply channels of the battery management system and the air conditioning panel. Finally, the domain control power distribution module 124 selects and connects the power supply channels of the battery management system and the air conditioning panel.

[0042] In order to quickly determine whether the remote control command needs to be executed, the sensor can be powered on when the CAN wake-up chip 121 is awakened. Figure 3 , the domain controller 120 may further include a sensor power supply module 125 .

[0043] The power supply module 122 is further configured to provide working power to the sensor power supply module 125 after receiving the enable control signal.

[0044] The sensor power supply module 125 is used to supply power to various sensors in the vehicle.

[0045] After receiving the enable control signal, the power supply module 122 supplies power to the main control chip 123 and also supplies power to the sensor power supply module 125. The sensor power supply module 125 is responsible for supplying power to various sensors in the vehicle, such as temperature sensors, humidity sensors, etc.

[0046] In the initial wake-up, power is supplied to each sensor, which aims to quickly determine whether the current remote control instruction needs to be executed by using the sensor data. For example, the remote instruction is to control the temperature in the vehicle to 25℃. If the sensor is also controlled by the domain control power distribution module 124 to supply power, the main process is: the CAN wake-up chip 121 is activated → the power supply module 122 works → the main control chip 123 works → the vehicle controller 130 works → a signal is sent to the main control chip 123 → the battery management system, the air conditioning panel and the sensor work → it is determined whether to start the air conditioner according to the sensor and the remote instruction. The main process of the setting mode of the embodiment of the application is: the CAN wake-up chip 121 is activated → the power supply module 122 works → the main control chip 123 and the sensor work → the vehicle controller 130 works → it is determined whether to start the air conditioner according to the sensor and the remote instruction → if it is started, a signal is sent to the main control chip 123, and the battery management system and the air conditioning panel work; if it is not started, a sleep signal is directly sent to the main control chip 123.

[0047] For remote air conditioning control, the remote control instruction can include a remote air conditioning control instruction; the remote air conditioning control instruction includes a target temperature in the vehicle; and the sensor can include a cabin temperature sensor.

[0048] The vehicle controller 130 is configured to obtain a temperature in the vehicle detected by the cabin temperature sensor, and determine whether to execute the remote air conditioning control instruction according to the target temperature in the vehicle and the temperature in the vehicle.

[0049] The vehicle controller 130 is further configured to generate a target power-on instruction according to the remote air conditioning control instruction when it is determined that the remote air conditioning control instruction needs to be executed; and the target components in the target power-on instruction include the battery management system and the air conditioning panel.

[0050] After receiving the remote air conditioning control instruction, the vehicle controller 130 as the central control unit of the vehicle obtains the current temperature in the vehicle from the temperature sensor in the cabin, and it also knows the target temperature set by the user (for example, the air conditioning temperature set by the remote APP). The vehicle controller 130 compares the two temperatures to determine whether to execute the remote air conditioning control instruction. For example, if the temperature in the vehicle is 35℃ and the target temperature is 25℃, the vehicle controller 130 will determine that “the air conditioner needs to be started”. If the temperature in the vehicle is close to the target temperature, the air conditioning control instruction may not be executed.

[0051] When the vehicle controller 130 determines that “the air conditioner needs to be started”, it generates a target power-on instruction (i.e., tells the system “which components to power on”). The instruction clearly indicates that the target components to be powered on include: the battery management system, which is responsible for managing the battery state and providing power support for the air conditioning power supply, which is particularly important in new energy vehicles; and the air conditioning panel, which is the control panel of the air conditioning system, used to operate the air conditioning mode, air volume, temperature, etc.

[0052] For remote battery heating, the remote control instruction includes a remote battery heating instruction; the remote battery heating instruction includes a battery target temperature; the sensor includes a battery temperature sensor.

[0053] The vehicle controller 130 is configured to obtain the battery temperature detected by the battery temperature sensor, and determine whether to execute the remote battery heating instruction according to the battery target temperature and the battery temperature.

[0054] The vehicle controller 130 is further configured to generate a target power-on instruction according to the remote battery heating instruction when it is determined that the remote battery heating instruction is needed; the target component in the target power-on instruction includes a battery management system.

[0055] The vehicle controller 130 will read the current temperature of the battery pack from the battery temperature sensor, and also know the user's battery target temperature (such as setting to heat to 15℃ in order to improve battery performance or facilitate charging). The vehicle controller 130 compares the two temperatures to determine whether to execute the remote battery heating instruction. For example: if the current battery temperature is -10℃ and the target temperature is 15℃, the vehicle controller 130 determines that "the battery is too cold and needs to be heated". If the battery temperature has met the standard, the heating instruction will not be executed.

[0056] When the vehicle controller 130 determines that the battery needs to be heated, it will generate a target power-on instruction according to the remote instruction, which needs to power the battery management system so that it can start to control the heating device to work. The battery management system is responsible for managing the charge and discharge, thermal management, safety state, etc. of the battery. Only when the BMS is powered and running, can the heater, heat pump and other equipment control the battery to be heated.

[0057] In order to avoid the voltage of the vehicle low-voltage storage battery 30 being reduced to cause the vehicle to be unable to start, the telematics processor 110 is further configured to monitor the voltage of the vehicle low-voltage storage battery 30; when the voltage is lower than a set threshold, a low-voltage power compensation control instruction is generated and sent to the vehicle controller 130.

[0058] The vehicle controller 130 is configured to generate a target power-on instruction according to the low-voltage power compensation control instruction, and send the target power-on instruction to the main control chip 123.

[0059] The main control chip 123 is further configured to receive the target power-on instruction sent by the vehicle controller 130, and generate a wake-up integrated controller control signal according to the target power-on instruction, and output the wake-up integrated controller control signal to the domain control power distribution module 124.

[0060] The telematics processor 110 is responsible for not only receiving remote instructions, but also monitoring the state of the vehicle. It will continuously or periodically detect the voltage of the vehicle low-voltage battery 30. When it is detected that the voltage is lower than the set safety threshold (for example, 20V), it is judged that the voltage of the vehicle low-voltage battery 30 is too low, which may affect the functions such as vehicle remote communication, control system wake-up, vehicle start, etc. At this time, the telematics processor 110 generates a low-voltage power compensation control instruction and sends it to the vehicle controller 130, notifying it to start the power compensation mechanism. It can be understood that before sending the low-voltage power compensation control instruction to the vehicle controller 130, the power-on process needs to be given to the vehicle controller 130, which will not be described here.

[0061] After the vehicle controller 130 receives the low-voltage power compensation control instruction, it generates a target power-on instruction to instruct the system to power some key controllers or modules. This instruction is sent to the master chip 123. After the master chip 123 receives the power-on instruction of the vehicle controller 130, it will generate a wake-up integrated controller control signal. The purpose of this signal is to wake up the integrated controller, which can control the DC-DC converter to charge the vehicle low-voltage battery 30. The signal is output to the domain control power distribution module 124. The domain control power distribution module 124 turns on the corresponding power supply channel according to the signal to provide power supply for the integrated controller, so as to wake it up to enter the working state.

[0062] In order to provide appropriate voltage for the master chip 123 and the sensor power supply module 125, the power supply module 122 can also include a DC-DC conversion circuit. The DC-DC conversion circuit is used to convert the voltage of the vehicle low-voltage battery 30 into a voltage level suitable for the working of the master chip 123 and the sensor power supply module 125.

[0063] The voltage output by the low-voltage battery of the vehicle is often 24V, but the master chip 123 and the sensor can only accept 3.3V or 5V voltage. If they are directly connected to 24V, they may be burned out. Therefore, the DC-DC conversion circuit converts 24V into 3.3V or 5V to ensure that these chips and sensors can work normally. At the same time, it can also keep the voltage stable to prevent voltage fluctuations from causing interference to the system.

[0064] The domain control power distribution module 124 can include multiple high-side drive chips, and each power supply channel corresponds to an output channel of a high-side drive chip.

[0065] For example, the domain control power distribution module 124 includes 4 high-side drive chips with 12 channels, and one channel of each high-side drive chip can control the conduction and disconnection of a component circuit of the vehicle.

[0066] The vehicle will often enter a sleep state after completing some remote instructions. Therefore, the master control chip 123 is further configured to receive a sleep instruction, and disconnect all power supply channels of the domain control power distribution module 124; the master control chip 123 is further configured to send the sleep instruction to the CAN wake-up chip 121; and the CAN wake-up chip 121 is further configured to receive the sleep instruction, and output a disable control signal to the power supply module 122, so as to make the power supply module 122 disconnect the power supply to the master control chip 123, and enter a sleep state.

[0067] The sleep instruction received by the master control chip 123 is sent by the vehicle controller 130, and the sleep instruction can be actively sent by the remote terminal 20 or automatically generated by the vehicle controller 130 after completing a series of work. After receiving the sleep instruction, the master control chip 123 controls the domain control power distribution module 124 to close all power supply channels. After the master control chip 123 completes the power-off control, the master control chip 123 also sends a sleep instruction to the CAN wake-up chip 121, and the sleep instruction is used to inform the CAN wake-up chip 121 that the system is about to enter a sleep state, and please prepare to enter a low-power mode.

[0068] After receiving the sleep instruction, the CAN wake-up chip 121 sends a disable control signal to the power supply module 122. The signal informs the power supply module 122 to stop supplying power to the master control chip 123. Once the master control chip 123 is powered off, the master control chip 123 stops running. At the same time, the CAN wake-up chip 121 itself also enters a sleep mode, and only the lowest power consumption state is reserved, and the next wake-up event is waited.

[0069] Further, the embodiment of the present application also provides a vehicle remote control method, which is applied to the vehicle remote control system 10, the vehicle remote control system 10 comprises a remote information processor 110 and a domain controller 120, the domain controller 120 comprises a CAN wake-up chip 121, a power supply module 122, a master control chip 123 and a domain control power distribution module 124; the CAN wake-up chip 121, the power supply module 122 and the domain control power distribution module 124 are electrically connected with a vehicle low-voltage storage battery 30 respectively; and the domain control power distribution module 124 comprises a plurality of independent power supply channels. Referring to Figure 4 The method comprises the following steps: S210: The remote information processor receives a remote wake-up instruction sent by a remote terminal, and sends the remote wake-up instruction to the CAN wake-up chip.

[0070] S220: The CAN wake-up chip switches from a sleep state to a normal working state after receiving the remote wake-up instruction, and outputs an enable control signal to the power supply module.

[0071] S230: The power supply module enters a normal working state to provide a working power supply for the master control chip after receiving the enable control signal.

[0072] S240: The master control chip receives the target power-on instruction and generates a corresponding control signal according to the target power-on instruction, and outputs the control signal to the domain control power distribution module.

[0073] S250: The domain control power distribution module controls the corresponding power supply channel to be turned on according to the control signal, so as to selectively supply power to the corresponding functional components in the vehicle.

[0074] To sum up, the vehicle remote control system and method provided by the embodiment of the application receives the wake-up instruction sent by the remote terminal through the telematics processor, and realizes remote wake-up, on-demand power supply and precise control of the functional components of the vehicle through the cooperative control of the CAN wake-up chip, the power supply module, the master control chip and the domain control power distribution module. The system supports multi-path independent power supply channel control, and can intelligently decide whether to execute remote air conditioning control, remote battery heating and other instructions based on sensor data such as vehicle cabin temperature and battery temperature, in combination with the intelligent judgment logic of the vehicle controller, and generate corresponding target power-on instructions to realize precise power supply to key components (such as the battery management system and the air conditioning panel).

[0075] The above is only the preferred embodiment of the application and is not used to limit the application. For those skilled in the art, the application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the application shall be included in the protection scope of the application.

[0076] It is obvious for those skilled in the art that the application is not limited to the details of the above exemplary embodiments, and the application can be realized in other specific forms without departing from the spirit or essential characteristics of the application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the application. Any reference signs in the claims should not be regarded as limiting the involved claims.

Claims

1. A vehicle remote control system, characterized in that: The vehicle remote control system includes a telematics processor and a domain controller, the domain controller includes a CAN wake-up chip, a power supply module, a main control chip, and a domain control power distribution module; the CAN wake-up chip, the power supply module, and the domain control power distribution module are electrically connected to the vehicle's low-voltage battery respectively; the domain control power distribution module includes multiple independent power supply channels; The telematics processor is used to receive a remote wake-up instruction sent by a remote terminal and send the remote wake-up instruction to the CAN wake-up chip; The CAN wake-up chip is used to switch from a sleep state to a normal working state after receiving the remote wake-up instruction, and output an enable control signal to the power supply module; The power supply module is used to enter a normal working state after receiving the enable control signal and provide working power to the main control chip; The main control chip is used to receive a target power-on instruction, generate a corresponding control signal according to the target power-on instruction, and output the control signal to the domain control power distribution module; The domain control power distribution module is used to control the corresponding power supply channel to be turned on according to the control signal, so as to selectively power the corresponding functional components in the vehicle.

2. The vehicle remote control system according to claim 1, characterized in that: The vehicle remote control system also includes a vehicle controller; The main control chip is used to generate a vehicle controller power-on control signal after power-on operation, and output the vehicle controller power-on control signal to the domain control power distribution module to control the power-on operation of the vehicle controller; The vehicle controller is used to receive the remote control command issued by the telematics processor, generate a target power-on command according to the remote control command, and send the target power-on command to the main control chip; The main control chip is also used to receive the target power-on instruction sent by the vehicle controller, generate a corresponding control signal according to the target power-on instruction, and output the control signal to the domain control power distribution module.

3. The vehicle remote control system according to claim 2, characterized in that: The domain controller also includes a sensor power supply module; The power supply module is further configured to provide working power to the sensor power supply module after receiving the enable control signal; The sensor power supply module is used to supply power to various sensors in the vehicle.

4. The vehicle remote control system according to claim 3, characterized in that: The remote control command includes a remote air conditioning control command; the remote air conditioning control command includes a target temperature in the vehicle; the sensor includes a cabin temperature sensor; The vehicle controller is used to obtain the vehicle interior temperature detected by the cabin temperature sensor, and determine whether to execute the remote air conditioning control command based on the vehicle interior target temperature and the vehicle interior temperature; The vehicle controller is also used to generate a target power-on instruction according to the remote air-conditioning control instruction when it is determined that the remote air-conditioning control instruction needs to be executed; the target components in the target power-on instruction include the battery management system and the air-conditioning panel.

5. The vehicle remote control system according to claim 3, characterized in that: The remote control instruction includes a remote battery heating instruction; the remote battery heating instruction includes a battery target temperature; the sensor includes a battery temperature sensor; The vehicle controller is used to obtain the battery temperature detected by the battery temperature sensor, and determine whether to execute the remote battery heating instruction according to the battery target temperature and the battery temperature; The vehicle controller is further configured to generate a target power-on instruction according to the remote battery heating instruction when it is determined that the remote battery heating instruction is required; the target component in the target power-on instruction includes a battery management system.

6. The vehicle remote control system according to claim 3, characterized in that: The telematics processor is further configured to monitor the voltage of the vehicle's low-voltage battery; when the voltage is lower than a set threshold, generate a low-voltage charging control instruction, and send the low-voltage charging control instruction to the vehicle controller; The vehicle controller is used to generate a target power-on instruction according to the low-voltage power-up control instruction, and send the target power-on instruction to the main control chip; The main control chip is also used to receive the target power-on instruction sent by the vehicle controller, and generate a wake-up integrated controller control signal according to the target power-on instruction, and output the wake-up integrated controller control signal to the domain control distribution module.

7. The vehicle remote control system according to claim 3, characterized in that: The power supply module includes a DC-DC conversion circuit; The DC-DC conversion circuit is used to convert the voltage of the vehicle low-voltage battery into a voltage level suitable for the operation of the main control chip and the sensor power supply module.

8. The vehicle remote control system according to claim 1, characterized in that: The domain control power distribution module includes multiple high-side driver chips, and each power supply channel corresponds to an output channel of the high-side driver chip.

9. The vehicle remote control system according to claim 1, characterized in that: The main control chip is further configured to receive a sleep instruction and disconnect all the power supply channels of the domain control power distribution module; The main control chip is further used to send the sleep instruction to the CAN wake-up chip; The CAN wake-up chip is further configured to receive the sleep instruction and output a disable control signal to the power supply module, so that the power supply module disconnects the power supply to the main control chip and enters a sleep state.

10. A vehicle remote control method, characterized in that: Applicable to a vehicle remote control system according to any one of claims 1 to 9, the vehicle remote control system includes a telematics processor and a domain controller, the domain controller includes a CAN wake-up chip, a power supply module, a main control chip, and a domain control power distribution module; the CAN wake-up chip, the power supply module, and the domain control power distribution module are electrically connected to the vehicle's low-voltage battery, respectively; the domain control power distribution module includes multiple independent power supply channels; the method includes: The telematics processor receives a remote wake-up instruction sent by a remote terminal, and sends the remote wake-up instruction to the CAN wake-up chip; After receiving the remote wake-up instruction, the CAN wake-up chip switches from a sleep state to a normal working state and outputs an enable control signal to the power supply module; After receiving the enable control signal, the power supply module enters a normal working state and provides working power to the main control chip; The main control chip receives the target power-on instruction, generates a corresponding control signal according to the target power-on instruction, and outputs the control signal to the domain control power distribution module; The domain control power distribution module controls the corresponding power supply channel to be turned on according to the control signal, so as to selectively supply power to the corresponding functional components in the vehicle.

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