Vehicle-mounted power supply control circuit and vehicle-mounted power supply

Abstract

The invention discloses a vehicle-mounted power supply control circuit and a vehicle-mounted power supply, the circuit comprises a power supply control management unit, a domain controller and a vehicle-mounted terminal, after a vehicle-mounted main power supply passes through the power supply control management unit, a power supply output end supplies power to the vehicle-mounted terminal; the vehicle-mounted main power supply is connected with the domain controller and provides power for the domain controller, and the power supply control management unit is used for dividing the vehicle-mounted main power supply into multiple paths of output through a power switch circuit and detecting and protecting voltage and current output by a power supply output end; and the vehicle-mounted terminal is used for providing a display and diagnosis interface so as to carry out real-time diagnosis and state detection on the vehicle-mounted main power supply. On one hand, visual diagnosis and protection of the vehicle-mounted power supply are achieved, and on the other hand, power-on and power-off operation in the whole vehicle debugging process is simplified. The invention further provides a vehicle-mounted power supply.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle-mounted whole vehicle power supply control systems, and in particular to a vehicle-mounted power supply control circuit and a vehicle-mounted power supply. Background Art

[0002] With the development of autonomous driving technology, the number of on-board electronic units is increasing dramatically, and the power supply solution for the entire vehicle's electronic system is particularly important.

[0003] There are generally two types of power supply solutions in related technologies: the first is a fuse box, and the other is a traditional BCM (Battery Control Module, which is mainly responsible for supervising and managing the operation of various electrical equipment on the vehicle) power box. However, none of the above power supply solutions can accurately control and diagnose each power supply, nor can they quickly locate whether it is a power supply problem after a functional problem occurs in the vehicle. Furthermore, it is impossible to simplify the power-on and power-off operations of the equipment during the vehicle debugging process. Summary of the invention

[0004] The embodiments of the present application provide a vehicle-mounted power supply control circuit and a vehicle-mounted power supply to realize real-time visual diagnosis and protection of the power supply of the entire vehicle, and at the same time, the power-on and power-off timing can be dynamically operated.

[0005] The present application embodiment adopts the following technical solutions:

[0006] In a first aspect, an embodiment of the present application provides a vehicle-mounted power supply control circuit, wherein the circuit comprises: a power supply control management unit, a domain controller and a vehicle-mounted terminal, wherein the vehicle-mounted total power supply passes through the power supply control management unit and then provides power to the vehicle-mounted terminal from the power supply output end, the vehicle-mounted total power supply is connected to the domain controller to provide power to the domain controller, and the power supply control management unit is used to

[0007] The vehicle-mounted total power supply is divided into multiple outputs through a power switch circuit, and the voltage and current output from the power output end are detected and protected;

[0008] The vehicle-mounted terminal is used for

[0009] A display and diagnostic interface is provided to perform real-time diagnosis and status detection on the vehicle main power supply.

[0010] In some embodiments, the power control management unit communicates with an external unit and is also used to

[0011] Respond to the real-time modification of any one or more operations of power control timing, power output current limit value, power switch;

[0012] And / or, based on the vehicle Ethernet interface PHY, the communication interaction between the power control management unit and other Ethernet devices in the vehicle and the OTA upgrade of the power control management unit itself are realized.

[0013] In some embodiments, the power control management unit includes an MCU controller,

[0014] When the power input of KL30 as a normal power source is connected to the power control management unit, the current and voltage of the output circuit are detected by the MCU controller;

[0015] When the power input of KL15 serving as the ignition signal is connected to the power control management unit, the MCU controller performs corresponding power-off after the vehicle is turned off.

[0016] In some embodiments, the domain controller includes a non-domain controller external sensor unit and an external sensor unit of the domain controller, and the circuit is further configured to

[0017] After detecting that the KL15 is powered on, the power control management unit and the domain controller are awakened and start working. For the non-domain controller external sensor unit, the power control management unit performs power-on control on the non-domain controller external sensor unit according to the preset timing logic; and for the external sensor unit of the domain controller, before the domain controller loads the driver, the domain controller notifies the power control management unit through the network to perform the power-on operation of the relevant unit.

[0018] In some embodiments, the circuit is also used to

[0019] After detecting that the KL15 is powered off, for the non-domain controller external sensor unit, the power control management unit controls the power off of the unit according to a preset timing; and for the external sensor unit of the domain controller, after the domain controller uninstalls the driver, the domain controller notifies the power control management unit through the network to execute the power off operation of the relevant unit.

[0020] In some embodiments, the power control management unit is also used to

[0021] Detect the load current and output voltage of each output in real time, and cut off the power output after the current reaches the corresponding limit according to the set overload current and short-circuit current values, and send the fault status to the domain controller through the network;

[0022] The fault is integrated into the fault table of the whole vehicle through the domain controller and saved locally, and uploaded to the cloud for storage.

[0023] In some embodiments, the vehicle terminal is also used to

[0024] By adding a vehicle power diagnosis upper layer application in the vehicle terminal, the switch state, voltage and current value of each output power of the power control management unit are displayed in real time.

[0025] In some embodiments, the vehicle terminal is also used to

[0026] In response to a request to control or query the power state, receiving information of the touch screen and sending the information of the touch screen to the power control management unit through a network, the power control management unit is used to perform a corresponding query or modification operation after receiving the information and return the result to the vehicle-mounted terminal through the network;

[0027] The result returned by the power control management unit is received and displayed on the touch screen through the vehicle-mounted terminal.

[0028] In some embodiments, a gateway is also included, and the gateway is connected to the power control management unit, the vehicle terminal and the domain controller through an in-vehicle Ethernet interface PHY.

[0029] In a second aspect, an embodiment of the present application further provides a vehicle-mounted power supply, which includes the vehicle-mounted power supply control circuit described in the first aspect.

[0030] At least one of the above technical solutions adopted in the embodiments of the present application can achieve the following beneficial effects: the vehicle-mounted power supply control circuit includes a power supply control management unit, a domain controller and a vehicle-mounted terminal, wherein the vehicle-mounted total power supply provides power to the vehicle-mounted terminal from the power supply output end after passing through the power supply control management unit, and the vehicle-mounted total power supply is connected to the domain controller to provide power to the domain controller. In the power supply control management unit, the vehicle-mounted total power supply is divided into multiple outputs through the power switch circuit, and the voltage and current output from the power supply output end are detected and protected. At the same time, in the vehicle-mounted terminal, by providing a display and diagnostic interface, the vehicle-mounted total power supply can be diagnosed and the status detected in real time. The power supply control management unit is used to realize the functions of staggered power on and off, power supply diagnosis and protection of the whole vehicle power supply, and the vehicle-mounted terminal is used to realize visual diagnosis and status detection. Thereby improving the stability of the whole vehicle power supply of the autonomous driving vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0032] Figure 1 This is a schematic diagram of the internal structure of the vehicle power supply control circuit in the embodiment of the present application;

[0033] Figure 2 This is a schematic diagram of the principle of the vehicle power supply control circuit in the embodiment of the present application;

[0034] Figure 3 This is a schematic diagram of the circuit principle of the power control management unit in the vehicle power control circuit in the embodiment of the present application;

[0035] Figure 4 This is a schematic diagram of the circuit principle of the domain controller in the vehicle power control circuit in the embodiment of the present application;

[0036] Figure 5 This is a schematic diagram of the circuit principle of the vehicle terminal in the vehicle power control circuit in the embodiment of the present application. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0038] The fuse box solution used in the related art can only protect the circuit after the load is short-circuited to the ground, and the fuse needs to be manually checked and replaced after it blows, which is not suitable for the whole vehicle system with multiple electronic units such as autonomous driving vehicles. The traditional power box solution used in the related art has a small number of output channels and does not support online diagnosis, visual interface diagnosis, real-time current monitoring and other functions.

[0039] In view of the above shortcomings, the embodiments of the present application provide a power control circuit suitable for autonomous driving vehicles, which forms a vehicle power control system by adding a power control management unit, an autonomous driving domain controller, and a vehicle terminal to achieve precise control of the vehicle power supply, and real-time power supply diagnosis and protection.

[0040] The technical solutions provided by various embodiments of the present application are described in detail below in conjunction with the accompanying drawings.

[0041] The embodiment of the present application provides a vehicle-mounted power supply control circuit 100, such as Figure 1As shown, a schematic diagram of the internal structure of the vehicle-mounted power supply control circuit in an embodiment of the present application is provided, and the circuit includes: a power supply control management unit 110, a domain controller 120 and a vehicle-mounted terminal 130. The vehicle-mounted total power supply passes through the power supply control management unit 110 and then provides power to the vehicle-mounted terminal 130 from the power supply output end. The vehicle-mounted total power supply is connected to the domain controller 120 to provide power to the domain controller 120. The power supply control management unit 110 is used to divide the vehicle-mounted total power supply into multiple outputs through a power switching circuit, and to detect and protect the voltage and current output from the power supply output end; the vehicle-mounted terminal 130 is used to provide a display and diagnostic interface to perform real-time diagnosis and status detection on the vehicle-mounted total power supply.

[0042] The power control management unit 110 mainly divides the vehicle total power BATT into each output through a power switch, and detects and protects the output voltage and current. At the same time, it can also communicate with external units. The power control management unit 110 can support real-time modification of power control timing, power output current limit value, power switch operation, etc. The power control management unit 110 includes a power input and a power output. The power input of the power control management unit 110 mainly refers to the vehicle total power supply and the ignition signal power supply. In addition to the load, the power output of the power control management unit 110 also includes providing power to the vehicle terminal.

[0043] The domain controller 120, as the core computing unit of autonomous driving, is connected to complex sensor units. The power-on timing of these sensors can be managed by the domain controller to ensure that the sensors are ready for communication before the domain controller manages the driving of the relevant sensors. The domain controller 120 provides the timing control file of the power control management unit 110 and processes the fault message. The domain controller 120 is directly connected to the vehicle main power supply and the ignition signal power supply to provide power supply for sensors (external sensors and non-external sensors).

[0044] The vehicle-mounted terminal 130 mainly provides a display and diagnostic interface to achieve real-time diagnosis and status detection of the power supply in the entire system, that is, the vehicle-mounted terminal 130 provides a visual diagnostic interactive interface.

[0045] Through the above-mentioned vehicle power control circuit, real-time visual diagnosis and protection of the vehicle power supply can be realized, and the power-on and power-off timing supports dynamic operation. In addition, it meets the dynamic power-on and power-off requirements of multi-external sensor devices such as domain controllers.

[0046] Different from the fuse box solution in the related art, the power control management unit 110 in the above-mentioned vehicle power control circuit is used to divide the vehicle total power into multiple outputs through the power switch circuit, and detect and protect the voltage and current output from the power output end.

[0047] Different from the traditional power box solution in the related art, the vehicle terminal 130 in the above vehicle power control circuit is used to provide a display and diagnosis interface to perform real-time diagnosis and status detection on the vehicle main power supply, meeting the technical requirements for online diagnosis, visual interface diagnosis, and real-time current monitoring.

[0048] In one embodiment of the present application, the power control management unit communicates with an external unit and is also used to respond to real-time modification of any one or more operations of power control timing, power output current limit value, and power switch; and / or, based on the on-board Ethernet interface PHY, realize the communication interaction between the power control management unit and other Ethernet devices in the vehicle and the OTA upgrade of the power control management unit itself.

[0049] like Figure 3 As shown, after communicating with the external unit, the power control management unit responds to the operation of modifying the power control sequence in real time to control the power control sequence. It also responds to the power output current limit value to adjust different current values. It responds to the power switch to turn the power on or off.

[0050] At the same time, the power control management unit provides an in-vehicle Ethernet interface to realize the communication interaction between the power control management unit and other Ethernet device PHYs in the car and the OTA upgrade of the power control management unit itself. Preferably, a gateway is used to realize the communication between different Ethernet device PHYs.

[0051] In one embodiment of the present application, the power control management unit includes an MCU controller. When the power input of KL30 serving as a normal power source is connected to the power control management unit, the current and voltage of the output circuit are detected by the MCU controller. When the power input of KL15 serving as an ignition signal is connected to the power control management unit, the MCU controller performs a corresponding power-off after the vehicle is turned off.

[0052] like Figure 3 As shown, the vehicle power supply KL30 (normal power supply) enters the power control management unit and is connected to the power switch circuit. The MCU controller controls the power switch circuit to realize the switch control of this power supply. After the power supply is output, a voltage will be generated at both ends of the power resistor. The differential amplifier amplifies the small signal voltage by a certain multiple, which is used by the MCU controller to detect and calculate the current flowing through the power resistor, so as to realize the current detection of the output circuit by the power box.

[0053] At the same time, it also includes detecting the voltage value after the power resistor output. The specific implementation form is to convert the voltage after the power resistor into a proportional voltage value that can be received by the MCU controller through a voltage conversion circuit, and the MCU controller performs detection and calculation.

[0054] After the KL15 detection (ignition signal) is connected to the power control management unit, the MCU can detect the KL15 voltage through the voltage conversion circuit and perform the corresponding power-off process after the vehicle is turned off.

[0055] In one embodiment of the present application, the domain controller includes a non-domain controller external sensor unit and an external sensor unit of the domain controller. The circuit is also used for, after detecting that the KL15 is powered on, the power control management unit and the domain controller are awakened and start working. For the non-domain controller external sensor unit, the power control management unit performs power-on control on the non-domain controller external sensor unit according to a preset timing logic; and for the external sensor unit of the domain controller, before the domain controller loads the driver, the domain controller notifies the power control management unit through the network to perform the power-on operation of the relevant unit.

[0056] like Figure 2 as well as Figure 4 As shown, for the power-on and power-off control stage, the vehicle power supply control circuit can realize the power-on and power-off control of the entire vehicle power supply. The specific implementation form is:

[0057] After KL15 is powered on, the power control management unit and the domain controller are awakened and start working. For the non-domain controller external sensor unit, the power control management unit controls the power-on of the unit according to the timing set in its FLASH. At the same time, for the domain controller's external sensor unit, before the domain controller loads its driver, the domain controller notifies the power control management unit through the network to perform the power-on operation of the relevant unit.

[0058] In one embodiment of the present application, the circuit is also used for, after detecting that the KL15 is powered off, for the non-domain controller external sensor unit, the power control management unit controls the power-off of the unit according to a preset timing; and for the external sensor unit of the domain controller, after the domain controller uninstalls the driver, the domain controller notifies the power control management unit through the network to execute the power-off operation of the relevant unit.

[0059] like Figure 2 as well as Figure 4As shown, for the power-on and power-off control stage, the power-off operation is similar to the power-on operation. After detecting that KL15 is powered off, the power control management unit of the non-domain controller external sensor unit performs power-off control on the unit according to the timing set in its FLASH. For the domain controller's external sensor unit, after the domain controller uninstalls its driver, the domain controller notifies the power control management unit through the network to perform the power-off operation of the relevant unit.

[0060] In one embodiment of the present application, the power control management unit is also used to detect the load current and output voltage of each output in real time, and cut off the power output after the current reaches the corresponding limit according to the set overload current and short-circuit current values, and send the fault status to the domain controller through the network; the fault is integrated into the fault table of the whole vehicle through the domain controller and saved locally, and uploaded to the cloud for storage.

[0061] like Figure 2 as well as Figure 3 As shown, in the fault detection stage, reporting and protection, the vehicle power control circuit supports load and short-circuit diagnosis and protection for each controlled power supply, and supports fault storage and reporting.

[0062] (1) The power control management unit can detect the load current and output voltage of each output in real time;

[0063] (2) According to the set overload current and short-circuit current values, when the current reaches the corresponding limit, the power control management unit will cut off the power output and send the fault status to the domain controller through the network;

[0064] (3) The domain controller integrates the fault into the vehicle's fault table and saves it locally. At the same time, it uploads the fault to the cloud through the network device connected to the gateway for storage.

[0065] In one embodiment of the present application, the vehicle terminal is also used to display the switch status, voltage and current value of each output power of the power control management unit in real time through a vehicle power diagnosis upper-layer application added in the vehicle terminal.

[0066] like Figure 5 As shown, in the visual real-time diagnosis stage, the on-board power supply control circuit supports visual diagnosis of the output power supply in the system.

[0067] Add the upper layer application of vehicle power diagnosis to the vehicle terminal. After opening, it can display the switch status, voltage, current value of each output power of the power control management unit in real time. And each power supply can be turned on or off by touching the screen on the vehicle terminal, and the power current limit value can be modified.

[0068] In one embodiment of the present application, the vehicle-mounted terminal is also used to respond to a request to control or query the power status, receive information from the touch screen and send the information from the touch screen to the power control management unit via a network, and the power control management unit is used to perform corresponding query or modification operations after receiving the information and return the results to the vehicle-mounted terminal via the network; receive the results returned by the power control management unit and display them on the touch screen through the vehicle-mounted terminal.

[0069] like Figure 4 As shown, the access data path is as follows: when controlling or querying the power status, the vehicle-mounted terminal receives the information of the touch screen and sends it to the power control management unit through the network. After receiving the information, the power control management unit makes corresponding query or modification actions, and returns the results to the vehicle-mounted terminal through the network, which is displayed on the touch screen through the vehicle-mounted terminal.

[0070] In one embodiment of the present application, a gateway is also included, and the gateway is connected to the power control management unit, the vehicle terminal and the domain controller through an in-vehicle Ethernet interface PHY.

[0071] like Figure 5 As shown, the main function of the gateway is to provide data forwarding of the network interface. Based on the vehicle Ethernet interface PHY, the mutual communication between the power control management unit, the vehicle terminal and the domain controller is realized through the gateway.

[0072] The embodiment of the present application also provides a vehicle-mounted power supply, which includes the vehicle-mounted power supply control circuit, the circuit includes: a power supply control management unit, a domain controller and a vehicle-mounted terminal, the vehicle-mounted total power supply passes through the power supply control management unit and provides power to the vehicle-mounted terminal from the power supply output end, the vehicle-mounted total power supply is connected to the domain controller to provide power to the domain controller, and the power supply control management unit is used to

[0073] The vehicle-mounted total power supply is divided into multiple outputs through a power switch circuit, and the voltage and current output from the power output end are detected and protected;

[0074] The vehicle-mounted terminal is used for

[0075] A display and diagnostic interface is provided to perform real-time diagnosis and status detection on the vehicle main power supply.

[0076] In one embodiment of the present application, the power control management unit communicates with the external unit and is also used to

[0077] Respond to the real-time modification of any one or more operations of power control timing, power output current limit value, power switch;

[0078] And / or, based on the vehicle Ethernet interface PHY, the communication interaction between the power control management unit and other Ethernet devices in the vehicle and the OTA upgrade of the power control management unit itself are realized.

[0079] In one embodiment of the present application, the power control management unit includes an MCU controller,

[0080] When the power input of KL30 as a normal power source is connected to the power control management unit, the current and voltage of the output circuit are detected by the MCU controller;

[0081] When the power input of KL15 serving as the ignition signal is connected to the power control management unit, the MCU controller performs corresponding power-off after the vehicle is turned off.

[0082] In one embodiment of the present application, the domain controller includes a non-domain controller external sensor unit and an external sensor unit of the domain controller, and the circuit is also used to

[0083] After detecting that the KL15 is powered on, the power control management unit and the domain controller are awakened and start working. For the non-domain controller external sensor unit, the power control management unit performs power-on control on the non-domain controller external sensor unit according to the preset timing logic; and for the external sensor unit of the domain controller, before the domain controller loads the driver, the domain controller notifies the power control management unit through the network to perform the power-on operation of the relevant unit.

[0084] In one embodiment of the present application, the circuit is also used to

[0085] After detecting that the KL15 is powered off, for the non-domain controller external sensor unit, the power control management unit controls the power off of the unit according to a preset timing; and for the external sensor unit of the domain controller, after the domain controller uninstalls the driver, the domain controller notifies the power control management unit through the network to execute the power off operation of the relevant unit.

[0086] In one embodiment of the present application, the power control management unit is also used to

[0087] Detect the load current and output voltage of each output in real time, and cut off the power output after the current reaches the corresponding limit according to the set overload current and short-circuit current values, and send the fault status to the domain controller through the network;

[0088] The fault is integrated into the fault table of the whole vehicle through the domain controller and saved locally, and uploaded to the cloud for storage.

[0089] In one embodiment of the present application, the vehicle-mounted terminal is also used to

[0090] By adding a vehicle power diagnosis upper layer application in the vehicle terminal, the switch state, voltage and current value of each output power of the power control management unit are displayed in real time.

[0091] In one embodiment of the present application, the vehicle-mounted terminal is also used to

[0092] In response to a request to control or query the power state, receiving information of the touch screen and sending the information of the touch screen to the power control management unit through a network, the power control management unit is used to perform a corresponding query or modification operation after receiving the information and return the result to the vehicle-mounted terminal through the network;

[0093] The result returned by the power control management unit is received and displayed on the touch screen through the vehicle-mounted terminal.

[0094] In one embodiment of the present application, a gateway is also included, and the gateway is connected to the power control management unit, the vehicle terminal and the domain controller through an in-vehicle Ethernet interface PHY.

[0095] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A vehicle power supply control circuit, wherein: The circuit includes: a power control management unit, a domain controller and a vehicle terminal. The vehicle total power passes through the power control management unit and provides power to the vehicle terminal from the power output end. The vehicle total power is connected to the domain controller to provide power to the domain controller. The power control management unit is used to The vehicle-mounted total power supply is divided into multiple outputs through a power switch circuit, and the voltage and current output from the power output end are detected and protected; The vehicle-mounted terminal is used for A display and diagnostic interface is provided to perform real-time diagnosis and status detection on the vehicle main power supply.

2. The circuit as claimed in claim 1, wherein: The power control management unit communicates with the external unit and is also used to Respond to the real-time modification of any one or more operations of power control timing, power output current limit value, power switch; And / or, based on the vehicle Ethernet interface PHY, the communication interaction between the power control management unit and other Ethernet devices in the vehicle and the OTA upgrade of the power control management unit itself are realized.

3. The circuit as claimed in claim 2, wherein: The power control management unit includes an MCU controller, When the power input of KL30 as a normal power source is connected to the power control management unit, the current and voltage of the output circuit are detected by the MCU controller; When the power input of KL15 serving as the ignition signal is connected to the power control management unit, the MCU controller performs corresponding power-off after the vehicle is turned off.

4. The circuit as claimed in claim 3, wherein: The domain controller includes a non-domain controller external sensor unit and a domain controller external sensor unit, and the circuit is also used for After detecting that the KL15 is powered on, the power control management unit and the domain controller are awakened and start working. For the non-domain controller external sensor unit, the power control management unit performs power-on control on the non-domain controller external sensor unit according to the preset timing logic; and for the external sensor unit of the domain controller, before the domain controller loads the driver, the domain controller notifies the power control management unit through the network to perform the power-on operation of the relevant unit.

5. The circuit as claimed in claim 4, wherein: The circuit is also used to After detecting that the KL15 is powered off, for the non-domain controller external sensor unit, the power control management unit controls the power off of the unit according to a preset timing; and for the external sensor unit of the domain controller, after the domain controller uninstalls the driver, the domain controller notifies the power control management unit through the network to execute the power off operation of the relevant unit.

6. The circuit as claimed in claim 1, wherein: The power control management unit is also used to Detect the load current and output voltage of each output in real time, and cut off the power output after the current reaches the corresponding limit according to the set overload current and short-circuit current values, and send the fault status to the domain controller through the network; The fault is integrated into the fault table of the whole vehicle through the domain controller and saved locally, and uploaded to the cloud for storage.

7. The circuit as claimed in claim 1, wherein: The vehicle-mounted terminal is also used for By adding a vehicle power diagnosis upper layer application in the vehicle terminal, the switch state, voltage and current value of each output power of the power control management unit are displayed in real time.

8. The circuit as claimed in claim 7, wherein: The vehicle-mounted terminal is also used for In response to a request to control or query the power state, receiving information of the touch screen and sending the information of the touch screen to the power control management unit through a network, the power control management unit is used to perform a corresponding query or modification operation after receiving the information and return the result to the vehicle-mounted terminal through the network; The result returned by the power control management unit is received and displayed on the touch screen through the vehicle-mounted terminal.

9. The circuit of claim 1, wherein: It also includes a gateway, which is connected to the power control management unit, the vehicle terminal and the domain controller through an in-vehicle Ethernet interface PHY.

10. A vehicle-mounted power supply, wherein: The vehicle-mounted power supply control circuit comprises the vehicle-mounted power supply control circuit as claimed in any one of claims 1 to 9.

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