Vehicle power supply control method, chip, system and medium

Abstract

The invention provides a power supply control method of a vehicle, a chip, a system and a medium, which can be applied to scenes such as ports, expressways, logistics, mines, closed parks or urban traffic. The power supply control chip is applied to a domain controller, the power supply control chip is connected with a constant power supply, the power supply control chip is further connected with enabling pins of a plurality of enabling power supplies through a first I / O interface, and the enabling power supplies are electrically connected with modules in the domain controller. The method comprises the steps of determining a to-be-upgraded module corresponding to an upgrading message and a target enabling power supply in response to the upgrading message; adjusting the current voltage amplitude of the target enabling power supply to the target voltage amplitude; and sending a power supply signal to an enabling pin of the target enabling power supply through the first I / O interface, wherein the power supply signal is used for indicating the target enabling power supply to supply power to the upgrading process of the to-be-upgraded module according to the target voltage amplitude. According to the method, the success rate of vehicle OTA upgrading is improved, and normal power supply of the domain controller is ensured.

Description

Technical Field

[0001] The present application relates to the field of autonomous driving technology, and in particular to a vehicle power control method, chip, system and medium, which can be applied to scenarios such as ports, highways, logistics, mines, closed parks, or urban transportation. Background Art

[0002] In the field of autonomous driving, it is necessary to use Over-the-Air (OTA) technology to remotely upgrade vehicles, such as upgrading the microcontroller unit (MCU) and system on chip (SOC) images in the autonomous driving domain controller (referred to as "domain controller"), and upgrading sensor firmware.

[0003] The domain controller is mainly composed of core components such as MCU, SOC, power supply, and peripheral sensors. In related technologies, the enable pin of the power supply in the domain controller is connected to the I / O interface of the MCU, and the MCU drives the enable pin of the power supply to control the power on / off of each module in the domain. When a module in the domain controller is upgraded OTA, the MCU will drive the enable pin of the power supply through the I / O interface to control the power supply to power the upgrade process of the module, thereby ensuring a successful upgrade.

[0004] However, when the enable pin of the MCU driver power controls the power supply for the OTA upgrade process, it may cause the OTA upgrade to fail or the domain controller to be powered abnormally. Summary of the invention

[0005] The embodiments of the present application provide a vehicle power control method, chip, system and medium, which can improve the success rate of vehicle OTA upgrades and ensure the normal power supply of the domain controller.

[0006] In a first aspect, an embodiment of the present application provides a power control method for a vehicle, which is applied to a power control chip of a domain controller in a vehicle, wherein the power control chip is connected to a normal power supply, and the power control chip is also connected to enable pins of multiple enable power supplies respectively through a first input / output I / O interface, and the enable power supply is electrically connected to a module other than the power control chip in the domain controller, and the method includes:

[0007] In response to an upgrade message, determining a module to be upgraded corresponding to the upgrade message and a target enabling power source corresponding to the module to be upgraded;

[0008] adjusting a current voltage amplitude of the target enabling power supply to a target voltage amplitude, wherein the target voltage amplitude is greater than the current voltage amplitude;

[0009] A power supply signal is sent to the enable pin of the target enable power supply through the first I / O interface, wherein the power supply signal is used to instruct the target enable power supply to supply power to the upgrade process of the module to be upgraded according to the target voltage amplitude.

[0010] In this embodiment, the power supply in the domain controller can be decoupled into a normal power supply and multiple enabling power supplies, and the normal power supply that is not controlled can power the power control chip, thereby ensuring that the I / O interface of the power control chip is always in a normal state. In addition, the enable pins of multiple enabling power supplies can be connected to the first I / O interface of the power control chip respectively. Since the I / O interface of the power control chip is always in a normal state, the enable pin of the enabling power supply is also always in a valid state. When the domain controller is OTA upgraded, the power control chip can also drive the enable pin of the enabling power supply through the I / O interface to perform normal power supply control on the module in the domain controller, thereby ensuring the normal power supply of the domain controller, while avoiding the OTA upgrade failure caused by abnormal power supply. Further, multiple enabling power supplies can be electrically connected to the modules in the domain controller respectively, and different enabling power supplies control power supply for different modules. After the power control chip receives the upgrade message, the corresponding module to be upgraded and the target enabling power supply corresponding to the module to be upgraded can be determined according to the upgrade message. The power control chip can adjust the current voltage amplitude of the target enabling power supply to a larger target voltage amplitude, providing a wider voltage range for the OTA upgrade of the module to be upgraded, avoiding the failure of the OTA upgrade due to a large voltage fluctuation range during the upgrade, and further improving the success rate of the vehicle OTA upgrade.

[0011] In a possible implementation manner, the power control chip is further connected to the multiple enabling power supplies respectively through a feedback circuit, and the adjusting the current voltage amplitude of the target enabling power supply to the target voltage amplitude includes:

[0012] Obtaining a current voltage value of the target enabling power source;

[0013] Determine a target voltage amplitude according to the current voltage value and a preset coefficient, wherein the preset coefficient is greater than 1;

[0014] The feedback circuit is used to adjust the current voltage amplitude of the target enabling power supply to the target voltage amplitude.

[0015] In this embodiment, the current voltage value may be a standard voltage value when the target enabling power source is working normally. According to the current voltage value and the preset coefficient, the target voltage amplitude can be simply and accurately determined. Afterwards, the current voltage amplitude of the target enabling power source can be quickly and accurately adjusted to the target voltage amplitude by using the feedback circuit, thereby providing a wider voltage range for the OTA upgrade of the module to be upgraded, and avoiding the OTA upgrade failure caused by a large voltage fluctuation range during the upgrade.

[0016] In a possible implementation, each enabling power supply is electrically connected to some modules in the domain controller, and the modules connected to each enabling power supply do not overlap, and determining the module to be upgraded corresponding to the upgrade message and the target enabling power supply corresponding to the module to be upgraded includes:

[0017] Determine the corresponding module to be upgraded according to the target module identification information in the upgrade message;

[0018] According to the preset correspondence relationship between the module and the enabling power source, the target enabling power source corresponding to the module to be upgraded is determined.

[0019] In this embodiment, after receiving the upgrade message, the power control chip can determine the module to be upgraded corresponding to this upgrade based on the target module identification information carried in the upgrade message, and then use the preset correspondence between the module and the enabled power supply to simply and accurately determine the target enabled power supply corresponding to the module to be upgraded, that is, the power supply to be controlled for power supply in this upgrade.

[0020] In a possible implementation manner, the power control chip is further connected to the output end of the enabling power supply through a second I / O interface, and the method further includes:

[0021] Using the second I / O interface, obtaining the output voltage of the enabling power supply;

[0022] The enabling power supply is controlled according to the output voltage.

[0023] In this embodiment, the power control chip can also be connected to the output end of the enabling power supply through the second I / O interface, and the voltage of the enabling power supply can be monitored using the second I / O interface, thereby avoiding power monitoring failure caused by the uncertain state of the I / O interface when the MCU is upgraded, thereby improving the reliability and accuracy of power monitoring; at the same time, it also releases the I / O interface of the MCU and improves the resource utilization of the MCU.

[0024] In a possible implementation manner, controlling the power supply of the enabling power supply according to the output voltage includes:

[0025] When the output voltage is greater than or equal to a first voltage threshold, a power-off instruction is sent to the enabling power supply to control the enabling power supply to power off;

[0026] When the output voltage is less than the first voltage threshold and greater than the second voltage threshold, a high output voltage alarm prompt message is displayed;

[0027] When the output voltage is less than the second voltage threshold and greater than the third voltage threshold, a low output voltage alarm prompt message is displayed;

[0028] When the output voltage is less than or equal to the third voltage threshold, a power-off alarm instruction is sent to the module corresponding to the enabling power supply, wherein the power-off alarm instruction is used to instruct the module corresponding to the enabling power supply to power off after waiting for a preset time;

[0029] The third voltage threshold is smaller than the second voltage threshold, and the second voltage threshold is smaller than the first voltage threshold.

[0030] In this embodiment, different power supply controls can be performed on the enabling power supply according to the relationship between the output voltage and the preset voltage threshold to achieve safer and more reliable power supply. Specifically, when the output voltage is greater than or equal to the first voltage threshold, the enabling power supply voltage is too high, and it is necessary to timely control the enabling power supply to power off to avoid damage to the enabling power supply high voltage. When the output voltage is less than or equal to the third voltage threshold, the enabling power supply voltage is too low, and there may be a problem of low voltage not working. It is necessary to send a power-off alarm instruction to the module corresponding to the enabling power supply, so that the module corresponding to the enabling power supply maintains the working voltage within the preset time length and processes the data in time, and powers off after waiting for the preset time length, so as to prevent the module from suddenly powering off and causing important data debugging and damage. When the output voltage is less than the first voltage threshold and greater than the second voltage threshold, the enabling power supply voltage is slightly higher, and a high output voltage alarm prompt message is required to remind the user to pay attention to the risk of high power supply voltage. When the output voltage is less than the second voltage threshold and greater than the third voltage threshold, the enabling power supply voltage is slightly lower, and a low output voltage alarm prompt message is required to remind the user to pay attention to the risk of low power supply voltage.

[0031] In a possible implementation manner, after controlling the power supply of the enabling power supply according to the output voltage, the method further includes:

[0032] Determining whether a power supply abnormality occurs in the enabling power supply according to the output voltage of the enabling power supply;

[0033] If a power supply abnormality occurs, corresponding power supply abnormality information is generated, and the power supply abnormality information is stored in a flash memory module of the domain controller, and the flash memory module is connected to the normal power supply;

[0034] The power supply abnormality information includes one or more of a power supply identifier, a power supply abnormality type, an abnormality occurrence time, and a next power-on time. The power supply abnormality type includes power failure and power off.

[0035] In this embodiment, if the power supply abnormality of the enabling power supply is detected according to the output voltage, the corresponding power supply abnormality information can be generated and stored, and the power supply abnormality information is stored in the flash memory module connected to the normal power supply. Through such a setting, the power control chip and the flash memory module are both connected to the normal power supply and are not affected by the enabling power supply. When the enabling power supply is abnormal due to OTA upgrade or other reasons, the flash memory module can record the relevant information of each power supply abnormality, so that the staff can analyze and locate the cause of the power supply abnormality based on the power supply abnormality information later.

[0036] In a possible implementation, it further includes:

[0037] In response to the power control information, determining the power to be controlled and the control signal corresponding to the power control information, wherein the control signal includes a power-on signal or a power-off signal;

[0038] Controlling the power supply to be controlled to be powered on / off according to the control signal, and storing the power supply control information in the flash memory module;

[0039] The flash memory module is also connected to a pin header, and the pin header is used to connect the flash memory module with an information reading device when the domain controller fails to be powered on, so that the information reading device can obtain the information stored in the flash memory module.

[0040] In this embodiment, when a power abnormality occurs, the user can also force power on / off through the power control chip by sending power control information to meet the user's power demand as much as possible. In addition, each time the power is forced on / off, the power control information can also be stored in the flash memory module, so that the staff can analyze and locate the cause of the power abnormality based on the power abnormality information and the power control information. Furthermore, the flash memory module can be connected to the pin header. When the entire domain controller cannot be powered on normally, the staff can also connect the flash memory module to the information reading device through the pin header to ensure the normal reading of the information in the flash memory module.

[0041] In a second aspect, an embodiment of the present application provides a power control chip, including:

[0042] A processing module, configured to, in response to an upgrade message, determine a module to be upgraded corresponding to the upgrade message and a target enabling power source corresponding to the module to be upgraded; and adjust a current voltage amplitude of the target enabling power source to a target voltage amplitude, wherein the target voltage amplitude is greater than the current voltage amplitude;

[0043] The sending module is used to send a power supply signal to the enable pin of the target enable power supply through the first I / O interface, and the power supply signal is used to instruct the target enable power supply to supply power to the upgrade process of the module to be upgraded according to the target voltage amplitude.

[0044] In a third aspect, an embodiment of the present application provides a power control system, including: a power control chip and a plurality of enabling power supplies;

[0045] The power control chip is connected to the normal power supply, and the power control chip is also connected to the enable pins of multiple enable power supplies respectively through the first input and output I / O interface, and the enable power supply is electrically connected to the modules in the domain controller except the power control chip;

[0046] The power control chip includes: a processor, and a memory connected to the processor in communication;

[0047] The memory is used to store computer-executable instructions;

[0048] The processor is used to execute the computer-executable instructions stored in the memory to implement the vehicle power control method of the first aspect.

[0049] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the power control method for a vehicle of the first aspect.

[0050] In a fifth aspect, an embodiment of the present application provides a computer program product, including a computer program, which, when executed by a processor, is used to implement the vehicle power control method of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 It is a structural diagram of a domain controller in the related art;

[0052] Figure 2 A system architecture diagram of an embodiment of the present application;

[0053] Figure 3 A flow chart of a power control method for a vehicle according to an embodiment of the present application;

[0054] Figure 4 This is a schematic diagram of the structure of a power control chip according to an embodiment of the present application;

[0055] Figure 5 It is a structural schematic diagram of a power control system according to an embodiment of the present application. DETAILED DESCRIPTION

[0056] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0057] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0058] In the technical solution of this application, the collection, storage, use, processing, transmission, provision and disclosure of information such as financial data or user data involved shall comply with the provisions of relevant laws and regulations and shall not violate public order and good morals.

[0059] It should be noted that in the embodiments of the present application, certain software, components, models and other existing solutions in the industry may be mentioned, and they should be regarded as exemplary. Their purpose is only to illustrate the feasibility of implementing the technical solution of the present application, but it does not mean that the applicant has or will necessarily use the solution.

[0060] It should also be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant laws, regulations and standards, and provide corresponding operation entrances for users to choose to authorize or refuse.

[0061] The power control method, chip, system and medium of the vehicle of the present application can be used in the field of autonomous driving, and can also be used in any field other than the field of autonomous driving, such as the field of power control, etc. The application field of the power control method, chip, system and medium of the vehicle of the present application is not limited.

[0062] The vehicle power control method, chip, system and medium of the present application can be applied to scenarios such as ports, highways, logistics, mines, closed parks, or urban transportation. Any related scenarios involving domain controller power control, such as vehicle autonomous driving domain power control scenarios, vehicle power domain power control scenarios, etc., can all apply the vehicle power control method, chip, system and medium of the present application.

[0063] First, the terms involved in this application are explained:

[0064] OTA (Over-the-Air) is a technology that allows car manufacturers to remotely update their vehicles with new software, features or security updates, thereby enabling online upgrades and maintenance of vehicles.

[0065] Normal power supply, in the power system, normal power is a continuous and stable power supply state. Normal power supply is a power supply that is not controlled by any switches, relays, etc., and can operate normally for a long time without worrying about power interruption or instability.

[0066] Power Enable refers to the function or mechanism of controlling the power on and off. Usually in electronic equipment and circuit design, the enable signal sent by the power enable pin is used to control the working state of the power module to save energy or protect the circuit.

[0067] The domain controller is mainly composed of core components such as MCU, SOC, power supply, and peripheral sensors. In the related technology, the enable pin of the power supply in the domain controller is connected to the I / O interface of the MCU, and the MCU drives the enable pin of the power supply to control the power on / off of each module in the domain.

[0068] Figure 1 It is a structural diagram of a domain controller in the related technology, such as Figure 1 As shown, the domain controller includes an MCU, a SOC, a power supply, and a sensor. The MCU is connected to the enable pin of the power supply through the I / O interface, and the power supply is also electrically connected to the MCU, the SOC, and the sensor. After the vehicle is started, the power supply supplies power to the MCU, and the MCU drives the enable pin of the power supply through the I / O interface to control the power on / off of other modules. When a module in the domain controller is upgraded OTA, the MCU drives the enable pin of the power supply through the I / O interface to control the power supply to power the upgrade process of the module, thereby ensuring a successful upgrade.

[0069] However, when the MCU driver power enable pin controls the power supply for the OTA upgrade process, it may cause the OTA upgrade to fail or the domain controller to be powered abnormally. For example:

[0070] (1) When the MCU is performing an OTA upgrade, the I / O interface of the MCU will be in an uncertain state, causing the power enable pin to fail. The MCU cannot drive the power enable pin through the I / O interface to perform normal power supply control, resulting in abnormal power supply to the domain controller and possible failure of the OTA upgrade.

[0071] (2) When the enable pin of the MCU driver power supply controls the power supply, the power supply is supplied within the normal voltage fluctuation range. However, OTA upgrade requires a wider voltage fluctuation range, and the normal voltage fluctuation range of the power supply often cannot be met, resulting in OTA upgrade failure.

[0072] Based on the above technical problems, the inventive concept of the present application is: how to provide a vehicle power control method that can improve the success rate of vehicle OTA upgrades and ensure the normal power supply of the domain controller.

[0073] The embodiment of the present application provides a vehicle power control method, chip, system and medium, which can decouple the power in the domain controller into a normal power supply and multiple enabling power supplies, and the normal power supply that is not controlled by any means supplies power to the power control chip, ensuring that the I / O interface of the power control chip is always in a normal state, and also ensuring that the enable pin of the enabling power connected to the first I / O interface of the power control chip is always in a valid state. During OTA upgrade, the power control chip can drive the enable pin of the enabling power supply through the I / O interface to perform normal power supply control on the module in the domain controller, thereby ensuring the normal power supply of the domain controller, while avoiding the OTA upgrade failure caused by abnormal power supply. In addition, multiple enabling power supplies can be electrically connected to the modules in the domain controller respectively. In response to the upgrade message, the power control chip can determine the module to be upgraded and the target enabling power supply corresponding to the upgrade message, and adjust the current voltage amplitude of the target enabling power supply to a larger target voltage amplitude, so as to provide a wider voltage range for the OTA upgrade of the module to be upgraded, and avoid the failure of the OTA upgrade caused by the large voltage fluctuation range during the upgrade, further improving the success rate of the vehicle OTA upgrade.

[0074] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0075] Figure 2 This is a system architecture diagram of an embodiment of the present application, such as Figure 2As shown, the power control chip of the domain controller is connected to the normal power supply, and the power control chip is also connected to the enable pins of multiple enable power supplies through the first I / O interface, the enable power supply 1 is electrically connected to the MCU, the enable power supply 2 is electrically connected to the SOC, and the enable power supply 3 is electrically connected to the sensor. The power control chip is also connected to the multiple enable power supplies through the feedback circuit, and the power control chip is also connected to the output ends of the multiple enable power supplies through the second I / O interface. When the domain controller performs OTA upgrade, the host computer sends an upgrade message to the power control chip. In response to the upgrade message, the power control chip determines the module to be upgraded and the target enable power supply corresponding to the upgrade message; uses the feedback circuit to adjust the current voltage amplitude of the target enable power supply to the target voltage amplitude; sends a power supply signal to the enable pin of the target enable power supply through the first I / O interface; after the enable power supply receives the power supply signal through the enable pin, it supplies power to the upgrade process of the module to be upgraded according to the target voltage amplitude. During the upgrade process, the power control chip also uses the second I / O interface to obtain the output voltage of the enable power supply, and uses the output voltage for voltage monitoring and power supply control.

[0076] Figure 3 This is a flow chart of a vehicle power control method according to an embodiment of the present application. Figure 2 The power control chip shown in the figure illustrates the power control method of the vehicle. Figure 2 As shown, the power control chip is connected to the normal power supply, and the power control chip is also connected to the enable pins of multiple enable power supplies through the first input and output I / O interface, and the enable power supply is electrically connected to the modules in the domain controller except the power control chip. Figure 3 As shown, the vehicle power control method may include the following steps:

[0077] S301: In response to an upgrade message, determine a module to be upgraded corresponding to the upgrade message and a target enabling power source corresponding to the module to be upgraded.

[0078] In this embodiment, the normal power supply can be a power supply that is not controlled by any means. The power control chip is connected to the normal power supply, which can ensure that the I / O interface of the power control chip is always in a normal state, such as the first I / O interface. When the domain controller is upgraded OTA, the first I / O interface in a normal state will also ensure that the enable pins of the multiple enable power supplies connected thereto are always in a valid state, thereby ensuring the normal power supply of the domain controller.

[0079] In this embodiment, the enabling power supply may be electrically connected to the modules in the domain controller, and each module is respectively connected to a different enabling power supply.

[0080] In this embodiment, the upgrade message can be sent to the power control chip by the host computer through the serial port protocol. The host computer can be a display control device in the vehicle, or a terminal device such as a mobile phone or iPAD connected to the vehicle for communication. The type of the host computer and the way of sending the upgrade message can be flexibly set by those skilled in the art, and no limitation is made here.

[0081] In this embodiment, the upgrade message may include identification information of the module to be upgraded, upgrade version and other information. The format of the upgrade message can be flexibly set by those skilled in the art and is not limited here.

[0082] In this embodiment, the module to be upgraded may be a module in a domain controller, such as an MCU, a SOC, a sensor, and the like.

[0083] In this embodiment, the target enabling power source may be a power source that performs power supply control for the module to be upgraded.

[0084] S302: Adjust the current voltage amplitude of the target enabling power supply to a target voltage amplitude, where the target voltage amplitude is greater than the current voltage amplitude.

[0085] In this embodiment, the voltage amplitude may be a maximum voltage value when the target enabling power source is working. The current voltage amplitude may be a standard voltage amplitude when the target enabling power source is working normally.

[0086] In this embodiment, the target voltage amplitude can be flexibly set by those skilled in the art, and no limitation is imposed here, as long as the target voltage amplitude is greater than the current voltage amplitude.

[0087] S303: Sending a power supply signal to an enable pin of a target enable power source through the first I / O interface.

[0088] In this embodiment, the power supply signal may be used to instruct the target enabling power supply to supply power to the upgrade process of the module to be upgraded according to the target voltage amplitude.

[0089] In this embodiment, after the voltage amplitude is adjusted, the power control chip can send a power supply signal to the enable pin of the target enable power supply through the first I / O interface. After the target enable power supply receives the power signal through the enable pin, it can supply power to the upgrade process of the module to be upgraded according to the target voltage amplitude, thereby ensuring the successful OTA upgrade of the module to be upgraded.

[0090] In this embodiment, the power supply signal can be flexibly set by those skilled in the art. For example, the power supply signal can be a high level, etc., and no limitation is made here.

[0091] In this embodiment, the power supply in the domain controller can be decoupled into a normal power supply and multiple enabling power supplies, and the normal power supply that is not controlled can power the power control chip, thereby ensuring that the I / O interface of the power control chip is always in a normal state. In addition, the enable pins of multiple enabling power supplies can be connected to the first I / O interface of the power control chip respectively. Since the I / O interface of the power control chip is always in a normal state, the enable pin of the enabling power supply is also always in a valid state. When the domain controller is OTA upgraded, the power control chip can also drive the enable pin of the enabling power supply through the I / O interface to perform normal power supply control on the module in the domain controller, thereby ensuring the normal power supply of the domain controller, while avoiding the OTA upgrade failure caused by abnormal power supply. Further, multiple enabling power supplies can be electrically connected to the modules in the domain controller respectively, and different enabling power supplies control power supply for different modules. After the power control chip receives the upgrade message, the corresponding module to be upgraded and the target enabling power supply corresponding to the module to be upgraded can be determined according to the upgrade message. The power control chip can adjust the current voltage amplitude of the target enabling power supply to a larger target voltage amplitude, providing a wider voltage range for the OTA upgrade of the module to be upgraded, avoiding the failure of the OTA upgrade due to a large voltage fluctuation range during the upgrade, and further improving the success rate of the vehicle OTA upgrade.

[0092] In a possible implementation, each enabling power supply may be electrically connected to some modules in the domain controller, and the modules connected to each enabling power supply do not overlap. The module to be upgraded corresponding to the upgrade message and the target enabling power supply corresponding to the module to be upgraded in the above step S301 may include:

[0093] S11: Determine the corresponding module to be upgraded according to the target module identification information in the upgrade message.

[0094] S12: Determine the target enabling power corresponding to the module to be upgraded according to the preset correspondence between the module and the enabling power.

[0095] In this embodiment, multiple enabling power supplies can be electrically connected to all modules in the domain controller except the power control chip, so that all modules in the domain controller except the power control chip have enabling power supplies to power them, and the modules connected to each enabling power supply do not overlap, that is, one module corresponds to only one enabling power supply, and one enabling power supply can power multiple modules.

[0096] In this embodiment, the corresponding relationship between the modules and the enabling power supplies can be flexibly set by those skilled in the art, as long as all modules in the domain controller except the power control chip are electrically connected to at least one enabling power supply. In addition, the number of modules electrically connected to each enabling power supply can also be flexibly set by those skilled in the art, and the number of modules electrically connected to different enabling power supplies can be the same or different.

[0097] Exemplarily, the MCU in the domain controller may be electrically connected to the enabling power supply 1 , the SOC may be electrically connected to the enabling power supply 2 , the sensor may be electrically connected to the enabling power supply 3 , and there may be multiple sensors.

[0098] In this implementation, the upgrade message may include identification information of the target module to be upgraded. The power control chip identifies the identification information of the target module and can determine the corresponding module to be upgraded.

[0099] Exemplarily, the upgrade message may include a message identifier (header message), a destination module identifier (destination ID), an upgrade version (target version), data information, and verification information (CRC). The message identifier may include 2 bytes to identify the type of message, so that the power control chip can determine whether it is an upgrade message; the destination module identifier may include 2 bytes to determine the module to be upgraded; the upgrade version may include 2 bytes to determine the version information of this upgrade; the data information may include 16 bytes, carrying the relevant data of this upgrade; the verification information may include 2 bytes to verify the legitimacy and accuracy of the upgrade message.

[0100] Exemplarily, the destination module identification information includes 2 bytes, and the lower 8 bits can be used to carry specific identification information, and the upper 8 bits are reserved. For example, the lower 0th bit: 0×1, indicating MCU; the lower 1st bit: 0×2, indicating SOC1; the lower 2nd bit: 0×3, indicating SOC2; the lower 3rd bit: 0×4, indicating SOC3; the lower 4th bit: 0×5, indicating sensor 1; the lower 5th bit: 0×6, indicating sensor 2; the lower 6th bit: 0×7, indicating sensor 3; the lower 7th bit: 0×8, indicating sensor 4.

[0101] In this embodiment, after receiving the upgrade message, the power control chip can determine the module to be upgraded corresponding to this upgrade based on the target module identification information carried in the upgrade message, and then use the preset correspondence between the module and the enabled power supply to simply and accurately determine the target enabled power supply corresponding to the module to be upgraded, that is, the power supply to be controlled for power supply in this upgrade.

[0102] In a possible implementation, the power control chip may also be connected to a plurality of enabling power supplies through feedback circuits, and the above step S302 of adjusting the current voltage amplitude of the target enabling power supply to the target voltage amplitude may include:

[0103] S21: Obtain the current voltage value of the target enabled power supply.

[0104] S22: Determine a target voltage amplitude according to the current voltage value and a preset coefficient, where the preset coefficient is greater than 1.

[0105] S23: Using the feedback circuit, adjust the current voltage amplitude of the target enabling power supply to the target voltage amplitude.

[0106] In this embodiment, the feedback circuit (FB circuit) can refer to the relevant circuits in the existing technology, and the specific implementation method of using the feedback circuit to adjust the current voltage amplitude of the target enabling power supply to the target voltage amplitude can also refer to the relevant existing technology, which will not be repeated here.

[0107] In this embodiment, the power control chip can be connected to the output end of the enabling power supply through the I / O interface, so as to obtain the current voltage value of the target enabling power supply by using the I / O interface. Of course, the power control chip can also obtain the current voltage value of the target enabling power supply by other methods, which is not limited here.

[0108] In this embodiment, the preset coefficient can be flexibly set by technicians in this field according to actual needs, without any limitation, as long as the preset coefficient is greater than 1. For example, the target voltage amplitude can be increased by 5% relative to the current voltage value, that is, the preset coefficient is 1.05.

[0109] In this embodiment, the current voltage value may be a standard voltage value when the target enabling power source is working normally. According to the current voltage value and the preset coefficient, the target voltage amplitude can be simply and accurately determined. Afterwards, the current voltage amplitude of the target enabling power source can be quickly and accurately adjusted to the target voltage amplitude by using the feedback circuit, thereby providing a wider voltage range for the OTA upgrade of the module to be upgraded, and avoiding the OTA upgrade failure caused by a large voltage fluctuation range during the upgrade.

[0110] In a possible implementation manner, the power control chip may also be connected to the output terminals of the enabled power supplies through the second I / O interface, and the method may further include:

[0111] S31: using the second I / O interface to obtain an output voltage of the enabling power supply;

[0112] S32: Controlling the power supply of the enabling power supply according to the output voltage.

[0113] In this embodiment, the power control chip can also be connected to the output end of the enabling power supply through the second I / O interface, and use the second I / O interface to obtain the output voltage of each enabling power supply to determine the voltage fluctuation and abnormality of the enabling power supply.

[0114] It should be noted that the power control chip uses the second I / O interface to monitor the voltage of the enable power supply, which can be performed during the OTA upgrade process of the domain controller or when the domain controller is working normally, without any restriction.

[0115] In this embodiment, the power control chip can also be connected to the output end of the enabling power supply through the second I / O interface, and the voltage of the enabling power supply can be monitored using the second I / O interface, thereby avoiding power monitoring failure caused by the uncertain state of the I / O interface when the MCU is upgraded, thereby improving the reliability and accuracy of power monitoring; at the same time, it also releases the I / O interface of the MCU and improves the resource utilization of the MCU.

[0116] In a possible implementation, the above step S32 controls the power supply of the enabling power supply according to the output voltage, which may include:

[0117] S41: When the output voltage is greater than or equal to the first voltage threshold, a power-off instruction is issued to the enabling power supply to control the enabling power supply to power off.

[0118] S42: When the output voltage is less than the first voltage threshold and greater than the second voltage threshold, a high output voltage alarm prompt message is displayed.

[0119] S43: When the output voltage is less than the second voltage threshold and greater than the third voltage threshold, a low output voltage alarm prompt message is displayed.

[0120] S44: When the output voltage is less than or equal to the third voltage threshold, a power-off alarm instruction is sent to a module corresponding to the enabling power supply, where the power-off alarm instruction is used to instruct the module corresponding to the enabling power supply to power off after waiting for a preset time.

[0121] The third voltage threshold is smaller than the second voltage threshold, and the second voltage threshold is smaller than the first voltage threshold.

[0122] In this embodiment, the second voltage threshold may be a standard output voltage of the enabling power supply, the first voltage threshold may be a high voltage that may damage the enabling power supply, and the third voltage threshold may be a low voltage that may cause the enabling power supply to not work properly.

[0123] In this embodiment, the specific values ​​of the first voltage threshold, the second voltage threshold and the third voltage threshold can be flexibly set by those skilled in the art according to actual conditions, and no limitation is made here, as long as the third voltage threshold is smaller than the second voltage threshold and the second voltage threshold is smaller than the first voltage threshold.

[0124] In this embodiment, the power control chip can be connected to the interrupt pin of the MCU, SOC, sensor and other modules through the dying_gasp function. When the output voltage is less than or equal to the third voltage threshold, the power control chip can send a power-off alarm instruction to the corresponding module through the interrupt pin. After receiving the instruction, the module will maintain the working voltage to process the data as much as possible, and power off after a preset time, giving the module a certain amount of data processing time to prevent sudden power-off of the module from causing damage and loss of important data.

[0125] In this embodiment, the preset time length can be flexibly set by those skilled in the art. For example, the preset time length can be 200 ms, 300 ms, or other times, and no limitation is made here.

[0126] In this embodiment, the high voltage warning prompt information and the low voltage warning prompt information can be output to the host computer to prompt the user to take corresponding measures in time.

[0127] In this implementation, when the output voltage is equal to the second voltage threshold, it can be considered that the enabling power supply is supplying power normally, and the output voltage of the enabling power supply can be continuously acquired for voltage monitoring.

[0128] In this embodiment, different power supply controls can be performed on the enabling power supply according to the relationship between the output voltage and the preset voltage threshold to achieve safer and more reliable power supply. Specifically, when the output voltage is greater than or equal to the first voltage threshold, the enabling power supply voltage is too high, and it is necessary to timely control the enabling power supply to power off to avoid damage to the enabling power supply high voltage. When the output voltage is less than or equal to the third voltage threshold, the enabling power supply voltage is too low, and there may be a problem of low voltage not working. It is necessary to send a power-off alarm instruction to the module corresponding to the enabling power supply, so that the module corresponding to the enabling power supply maintains the working voltage within the preset time length and processes the data in time, and powers off after waiting for the preset time length, so as to prevent the module from suddenly powering off and causing important data debugging and damage. When the output voltage is less than the first voltage threshold and greater than the second voltage threshold, the enabling power supply voltage is slightly higher, and a high output voltage alarm prompt message is required to remind the user to pay attention to the risk of high power supply voltage. When the output voltage is less than the second voltage threshold and greater than the third voltage threshold, the enabling power supply voltage is slightly lower, and a low output voltage alarm prompt message is required to remind the user to pay attention to the risk of low power supply voltage.

[0129] In a possible implementation manner, after the above step S32 controls the power supply of the enabling power supply according to the output voltage, the following may also be included:

[0130] S51: judging whether the enabling power supply has a power supply abnormality according to the output voltage of the enabling power supply.

[0131] S52: If a power supply abnormality occurs, corresponding power supply abnormality information is generated, and the power supply abnormality information is stored in a flash memory module of the domain controller, and the flash memory module is connected to a normal power supply.

[0132] The power supply abnormality information includes one or more of a power supply identifier, a power supply abnormality type, an abnormality occurrence time, and a next power-on time. The power supply abnormality type includes a power failure and a power shutdown.

[0133] In this implementation, if the output voltage of the enabling power supply cannot be detected after the power supply control in the above step S32, it can be indicated that a power supply abnormality occurs in the enabling power supply.

[0134] In this embodiment, power off may be a power outage caused by high voltage, and power failure may be a power failure caused by reasons other than high voltage. The type of power abnormality may be determined by detecting the output voltage.

[0135] In this embodiment, if the power supply abnormality of the enabling power supply is detected according to the output voltage, the corresponding power supply abnormality information can be generated and stored, and the power supply abnormality information is stored in the flash memory module connected to the normal power supply. Through such a setting, the power control chip and the flash memory module are both connected to the normal power supply and are not affected by the enabling power supply. When the enabling power supply is abnormal due to OTA upgrade or other reasons, the flash memory module can record the relevant information of each power supply abnormality, so that the staff can analyze and locate the cause of the power supply abnormality based on the power supply abnormality information later.

[0136] In a possible implementation, the method may further include:

[0137] S61: In response to the power control information, determine the power to be controlled and the control signal corresponding to the power control information, where the control signal includes a power-on signal or a power-off signal.

[0138] S62: Controlling the power supply to be controlled to be powered on / off according to the control signal, and storing the power supply control information in the flash memory module.

[0139] The flash memory module may also be connected to a pin header, which is used to connect the flash memory module with the information reading device when the domain controller fails to power on, so that the information reading device can obtain the information stored in the flash memory module.

[0140] In this embodiment, the power control information may be sent by a user to the power control chip via a host computer, or may be sent by the host computer to the MCU and then sent to the power control chip via an I / O interface.

[0141] In this embodiment, the flash memory module can also be connected to the pin header. When the entire domain controller loses power due to an abnormality such as OTA upgrade, and the next power-on fails, the data line and power supply of the flash memory module that stores the abnormality-related information can be brought out through the pin header. Even if the domain controller is not powered on, the abnormality-related information in the flash memory module can be read through the pin header and the line by the information reading device.

[0142] In this embodiment, when a power abnormality occurs, the user can also force power on / off through the power control chip by sending power control information to meet the user's power demand as much as possible. In addition, each time the power is forced on / off, the power control information can also be stored in the flash memory module, so that the staff can analyze and locate the cause of the power abnormality based on the power abnormality information and the power control information. Furthermore, the flash memory module can be connected to the pin header. When the entire domain controller cannot be powered on normally, the staff can also connect the flash memory module to the information reading device through the pin header to ensure the normal reading of the information in the flash memory module.

[0143] The power control method of the vehicle of the present application is described below with reference to a specific embodiment.

[0144] In a specific embodiment, a manufacturer of an autonomous driving vehicle needs to perform an OTA upgrade on the MCU in the domain controller. The specific power control process during the MCU upgrade is as follows:

[0145] In the first step, the manufacturer sends upgrade messages to the MCU and power control chip in the domain controller through the host computer.

[0146] In the second step, the power control chip responds to the upgrade message and determines the module to be upgraded corresponding to the upgrade message and the target enabled power supply corresponding to the module to be upgraded.

[0147] In the third step, the power control chip uses a feedback circuit to adjust the current voltage amplitude of the target enabled power supply to the target voltage amplitude.

[0148] In the fourth step, the power control chip sends a power supply signal to the enable pin of the target enable power supply through the first I / O interface.

[0149] In the fifth step, after the enable power supply receives the power supply signal through the enable pin, it supplies power to the upgrade process of the MCU according to the target voltage amplitude, and the MCU is upgraded according to the upgrade version and other information in the upgrade message.

[0150] In step 6, during the upgrade process, the power control chip uses the second I / O interface to obtain the output voltage of the enable power supply, confirms that the output voltage is equal to the second voltage threshold, and continues to obtain the output voltage of the enable power supply for voltage monitoring.

[0151] Figure 4 FIG. 1 is a schematic diagram of the structure of a power control chip according to an embodiment of the present application. Figure 4 As shown, the power control chip includes: a processing module 41, which is used to respond to the upgrade message, determine the module to be upgraded corresponding to the upgrade message, and the target enabling power supply corresponding to the module to be upgraded; adjust the current voltage amplitude of the target enabling power supply to the target voltage amplitude, and the target voltage amplitude is greater than the current voltage amplitude; a sending module 42, which is used to send a power supply signal to the enable pin of the target enabling power supply through the first I / O interface, and the power supply signal is used to instruct the target enabling power supply to supply power to the upgrade process of the module to be upgraded according to the target voltage amplitude. The radar fault handling system provided in the embodiment of the present application can execute the technical solution shown in the above method embodiment, and its implementation principle and beneficial effects are similar, which will not be repeated here.

[0152] In a possible implementation, the processing module 41 may also be used for:

[0153] Get the current voltage value of the target enabled power supply;

[0154] Determine the target voltage amplitude according to the current voltage value and the preset coefficient, where the preset coefficient is greater than 1;

[0155] The feedback circuit is used to adjust the current voltage amplitude of the target enabling power supply to the target voltage amplitude.

[0156] The power control chip provided in the embodiment of the present application can execute the technical solution shown in the above method embodiment, and its implementation principle and beneficial effects are similar, which will not be repeated here.

[0157] In a possible implementation, the processing module 41 may also be used for:

[0158] Determine the corresponding module to be upgraded according to the target module identification information in the upgrade message;

[0159] According to the preset correspondence between the module and the enabling power supply, the target enabling power supply corresponding to the module to be upgraded is determined.

[0160] The power control chip provided in the embodiment of the present application can execute the technical solution shown in the above method embodiment, and its implementation principle and beneficial effects are similar, which will not be repeated here.

[0161] In a possible implementation, the power control chip may further include a monitoring module 43, and the monitoring module 43 may be used to:

[0162] Using the second I / O interface, obtaining the output voltage of the enable power supply;

[0163] The power supply of the enabling power supply is controlled according to the output voltage.

[0164] The power control chip provided in the embodiment of the present application can execute the technical solution shown in the above method embodiment, and its implementation principle and beneficial effects are similar, which will not be repeated here.

[0165] In a possible implementation, the monitoring module 43 may also be used to:

[0166] When the output voltage is greater than or equal to the first voltage threshold, a power-off instruction is sent to the enabling power supply to control the enabling power supply to power off;

[0167] When the output voltage is less than the first voltage threshold and greater than the second voltage threshold, an output voltage high alarm prompt message is displayed;

[0168] When the output voltage is less than the second voltage threshold and greater than the third voltage threshold, a low output voltage alarm prompt message is displayed;

[0169] When the output voltage is less than or equal to the third voltage threshold, a power-off alarm instruction is sent to the module corresponding to the enabling power supply, where the power-off alarm instruction is used to instruct the module corresponding to the enabling power supply to power off after waiting for a preset time;

[0170] The third voltage threshold is smaller than the second voltage threshold, and the second voltage threshold is smaller than the first voltage threshold.

[0171] The power control chip provided in the embodiment of the present application can execute the technical solution shown in the above method embodiment, and its implementation principle and beneficial effects are similar, which will not be repeated here.

[0172] In a possible implementation, the monitoring module 43 may also be used to:

[0173] Judging whether the enabling power supply has power supply abnormality according to the output voltage of the enabling power supply;

[0174] If a power supply abnormality occurs, corresponding power supply abnormality information is generated, and the power supply abnormality information is stored in a flash memory module of the domain controller, and the flash memory module is connected to a normal power supply;

[0175] The power supply abnormality information includes one or more of a power supply identifier, a power supply abnormality type, an abnormality occurrence time, and a next power-on time. The power supply abnormality type includes a power failure and a power shutdown.

[0176] The power control chip provided in the embodiment of the present application can execute the technical solution shown in the above method embodiment, and its implementation principle and beneficial effects are similar, which will not be repeated here.

[0177] In a possible implementation, the monitoring module 43 may also be used to:

[0178] In response to the power control information, determining the power to be controlled and the control signal corresponding to the power control information, where the control signal includes a power-on signal or a power-off signal;

[0179] Controlling the power supply to be controlled to be powered on / off according to the control signal, and storing the power supply control information in the flash memory module;

[0180] The flash memory module is also connected to the pin header, which is used to connect the flash memory module with the information reading device when the domain controller fails to power on, so that the information reading device can obtain the information stored in the flash memory module.

[0181] The power control chip provided in the embodiment of the present application can execute the technical solution shown in the above method embodiment, and its implementation principle and beneficial effects are similar, which will not be repeated here.

[0182] Figure 5 FIG. 1 is a schematic diagram of a power supply control system according to an embodiment of the present application. Figure 5 As shown, the power control system may include: a power control chip and multiple enabling power supplies. The power control chip is connected to the normal power supply, and the power control chip is also connected to the enabling pins of the multiple enabling power supplies through the first input and output I / O interface, and the enabling power supplies are electrically connected to the modules in the domain controller except the power control chip.

[0183] The power control chip may include: a processor 501, and a memory 502 that is communicatively connected to the processor 501; the memory 502 stores computer-executable instructions; the processor 501 executes the computer-executable instructions stored in the memory 502 to implement the steps of the vehicle power control method in the above-mentioned method embodiments.

[0184] The power control chip can be independent or part of the autonomous driving domain, and the processor 501 and the memory 502 can adopt existing hardware in the autonomous driving domain.

[0185] In the above power control chip, the memory 502 and the processor 501 are electrically connected directly or indirectly to realize data transmission or interaction. For example, these elements can be electrically connected to each other through one or more communication buses or signal lines, such as through a bus connection. The memory 502 stores computer-executable instructions for implementing the data access control method, including at least one software function module that can be stored in the memory 502 in the form of software or firmware. The processor 501 executes various functional applications and data processing by running the software programs and modules stored in the memory 502.

[0186] The memory 502 may be, but is not limited to, a random access memory (RAM), a read only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electric erasable programmable read-only memory (EEPROM), etc. The memory 502 is used to store programs, and the processor 501 executes the programs after receiving the execution instruction. Furthermore, the software programs and modules in the above-mentioned memory 502 may also include an operating system, which may include various software components and / or drivers for managing system tasks (such as memory management, storage device control, power management, etc.), and may communicate with various hardware or software components to provide an operating environment for other software components.

[0187] The processor 501 may be an integrated circuit chip having the ability to process signals. The processor 501 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc. The methods, steps, and logic diagrams disclosed in the embodiments of the present application may be implemented or executed. The general-purpose processor may be a microprocessor or any conventional processor.

[0188] An embodiment of the present application further provides a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the steps of each method embodiment of the present application.

[0189] An embodiment of the present application further provides a computer program product, including a computer program, which implements the steps of each method embodiment of the present application when executed by a processor.

[0190] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described order of actions, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily required by the present application.

[0191] It should be further noted that, although the various steps in the flowchart are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless there is a clear description in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a portion of the steps in the flowchart may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these sub-steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

[0192] It should be understood that the above-mentioned device embodiments are only illustrative, and the device of the present application can also be implemented in other ways. For example, the division of units / modules in the above-mentioned embodiments is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units, modules or components can be combined, or can be integrated into another system, or some features can be ignored or not executed.

[0193] In addition, unless otherwise specified, each functional unit / module in each embodiment of the present application may be integrated into one unit / module, each unit / module may exist physically separately, or two or more units / modules may be integrated together. The above-mentioned integrated unit / module may be implemented in the form of hardware or in the form of a software program module.

[0194] In the above embodiments, the description of each embodiment has its own emphasis. For the part not described in detail in a certain embodiment, please refer to the relevant description of other embodiments. The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0195] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the appended claims.

[0196] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A power control method for a vehicle, characterized in that: A power control chip applied to a domain controller in a vehicle, the power control chip being connected to a normal power supply, the power control chip being further connected to enable pins of a plurality of enable power supplies respectively through a first input / output I / O interface, the enable power supply being electrically connected to a module other than the power control chip in the domain controller, the method comprising: In response to an upgrade message, determining a module to be upgraded corresponding to the upgrade message and a target enabling power source corresponding to the module to be upgraded; adjusting a current voltage amplitude of the target enabling power supply to a target voltage amplitude, wherein the target voltage amplitude is greater than the current voltage amplitude; A power supply signal is sent to the enable pin of the target enable power supply through the first I / O interface, wherein the power supply signal is used to instruct the target enable power supply to supply power to the upgrade process of the module to be upgraded according to the target voltage amplitude.

2. The vehicle power control method according to claim 1, characterized in that: The power control chip is also connected to the plurality of enabling power supplies respectively through a feedback circuit to adjust the current voltage amplitude of the target enabling power supply to the target voltage amplitude, including: Obtaining a current voltage value of the target enabling power supply; Determine a target voltage amplitude according to the current voltage value and a preset coefficient, wherein the preset coefficient is greater than 1; The feedback circuit is used to adjust the current voltage amplitude of the target enabling power supply to the target voltage amplitude.

3. The vehicle power control method according to claim 1, characterized in that: Each enabling power supply is electrically connected to some modules in the domain controller, and the modules connected to each enabling power supply do not overlap. The determining of the module to be upgraded corresponding to the upgrade message and the target enabling power supply corresponding to the module to be upgraded includes: Determine the corresponding module to be upgraded according to the target module identification information in the upgrade message; According to the preset correspondence relationship between the module and the enabling power source, the target enabling power source corresponding to the module to be upgraded is determined.

4. The vehicle power control method according to any one of claims 1 to 3, characterized in that: The power control chip is also connected to the output end of the enabling power supply through a second I / O interface, and the method further includes: Using the second I / O interface, obtaining the output voltage of the enabling power supply; The enabling power supply is controlled according to the output voltage.

5. The vehicle power control method according to claim 4, characterized in that: The step of controlling the power supply of the enabling power supply according to the output voltage includes: When the output voltage is greater than or equal to a first voltage threshold, a power-off instruction is sent to the enabling power supply to control the enabling power supply to power off; When the output voltage is less than the first voltage threshold and greater than the second voltage threshold, a high output voltage alarm prompt message is displayed; When the output voltage is less than the second voltage threshold and greater than the third voltage threshold, a low output voltage alarm prompt message is displayed; When the output voltage is less than or equal to the third voltage threshold, a power-off alarm instruction is sent to the module corresponding to the enabling power supply, wherein the power-off alarm instruction is used to instruct the module corresponding to the enabling power supply to power off after waiting for a preset time; The third voltage threshold is smaller than the second voltage threshold, and the second voltage threshold is smaller than the first voltage threshold.

6. The vehicle power control method according to claim 4, characterized in that: After controlling the power supply of the enabling power supply according to the output voltage, the method further includes: Determining whether a power supply abnormality occurs in the enabling power supply according to the output voltage of the enabling power supply; If a power supply abnormality occurs, corresponding power supply abnormality information is generated, and the power supply abnormality information is stored in a flash memory module of the domain controller, and the flash memory module is connected to the normal power supply; The power supply abnormality information includes one or more of a power supply identifier, a power supply abnormality type, an abnormality occurrence time, and a next power-on time. The power supply abnormality type includes power failure and power off.

7. The vehicle power control method according to claim 6, characterized in that: Also includes: In response to the power control information, determining the power to be controlled and the control signal corresponding to the power control information, wherein the control signal includes a power-on signal or a power-off signal; Controlling the power supply to be controlled to be powered on / off according to the control signal, and storing the power supply control information in the flash memory module; The flash memory module is also connected to a pin header, and the pin header is used to connect the flash memory module with an information reading device when the domain controller fails to be powered on, so that the information reading device can obtain the information stored in the flash memory module.

8. A power control chip, characterized in that: include: A processing module, configured to determine, in response to an upgrade message, a module to be upgraded corresponding to the upgrade message and a target enabling power source corresponding to the module to be upgraded; adjusting a current voltage amplitude of the target enabling power supply to a target voltage amplitude, wherein the target voltage amplitude is greater than the current voltage amplitude; The sending module is used to send a power supply signal to the enable pin of the target enable power supply through the first I / O interface, and the power supply signal is used to instruct the target enable power supply to supply power to the upgrade process of the module to be upgraded according to the target voltage amplitude.

9. A power supply control system, characterized in that: include: A power control chip and multiple enabling power supplies; The power control chip is connected to the normal power supply, and the power control chip is also connected to the enable pins of multiple enable power supplies respectively through the first input and output I / O interface, and the enable power supply is electrically connected to the modules in the domain controller except the power control chip; The power control chip includes: a processor, and a memory connected to the processor in communication; The memory is used to store computer-executable instructions; The processor is used to execute the computer-executable instructions stored in the memory to implement the power control method for a vehicle according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, they are used to implement the power supply control method for a vehicle according to any one of claims 1 to 7.

Images