Vehicle power supply system, vehicle power supply system detection method

Abstract

The application discloses a vehicle power supply system, and relates to the field of vehicle power supply.The system comprises a power module, a switch module and a load module.The power module comprises a DC / DC module and a battery module.The switch module comprises a first switch module, a second switch module and a third switch module.The load module comprises a first load module, a second load module, a third load module and a fourth load module.The power module is connected to the load module through the switch module.According to the charging state of the DC / DC module to the battery module, the battery module generates the second load module.Through the above scheme, the power supply state of the first load is detected and identified through periodic switching, and the detection of the power supply circuit is completed without affecting the normal work of the first load.The power supply circuit of the first load is detected after the abnormality of the DC / DC power module, and the abnormality of the DC / DC power module is prevented from damaging part of the power supply circuit and being discovered in time.

Description

Technical Field

[0001] This application relates to the field of vehicle power supply, and more particularly to a vehicle power supply system, a vehicle power supply system setting method, a vehicle power supply system control method, a vehicle power supply system detection method, a vehicle power supply system setting device, a vehicle power supply system control device, a vehicle power supply system detection device, electronic equipment, storage medium, and vehicle. Background Technology

[0002] With the popularization of new energy commercial vehicles and autonomous driving, information technology and intelligence are typical technical features, and their electrical architecture and control logic are more complex and extensive.

[0003] For new energy vehicles, the low-voltage battery and DC / DC converter are connected in parallel as inputs to the low-voltage power distribution system, and there is no detection or shutdown device between the three. If the DC / DC converter outputs an abnormally high voltage, it will cause the low-voltage battery to overcharge, which will damage the chemical stability of the low-voltage battery over time, affecting its lifespan and damaging the low-voltage power distribution system and controller. If the DC / DC converter has no power output, the entire vehicle's low-voltage system will be powered by the low-voltage battery, but the battery capacity is usually too small to support long-term operation under multiple loads, causing the vehicle to be unable to continue driving.

[0004] Although redundant power supply improves the reliability of the vehicle, the existing power distribution system relies on traditional fuse boxes, which are mostly PCB board structures. Current is transmitted through copper busbars, and circuit protection and control are achieved through fuses and relays. This centralized power distribution method results in excessively long wires and increased weight of the vehicle wiring harness, making it unsuitable for the overall vehicle architecture.

[0005] For example, patent CN118457475A (publication date: 20240809) discloses an intelligent power distribution system that uses two distribution boxes to complete power distribution in multiple modes. However, it uses traditional fuses and relays, and the distribution box has a single function, which cannot monitor the current magnitude or control the current under complex strategies, and cannot adapt to the overall vehicle architecture.

[0006] For example, patent CN117246265A (published on 20231219) discloses a regional power distribution method that enables local power distribution for all vehicle electrical components. However, its power distribution system can only provide load protection and cannot perform logic control related to the vehicle's domain controller.

[0007] Therefore, a solution for vehicle power systems is needed to fully leverage the reliability of power supply redundancy and to detect and evaluate redundant power supply in the event of abnormal DC / DC output. Summary of the Invention

[0008] The purpose of this invention is to provide a vehicle power system, a vehicle power system control method, a vehicle power system control device, an electronic device, a storage medium, and a vehicle, at least to solve the problem of fully utilizing the reliability of power supply redundancy, and to solve a technical problem in the detection and evaluation of redundant power supply when DC / DC output is abnormal.

[0009] This invention provides the following solution:

[0010] According to one aspect of the present invention, a vehicle power supply system is provided, the vehicle power supply system comprising:

[0011] Power supply module, switch module, and load module;

[0012] The power module includes a DC / DC module and a battery module;

[0013] The switching module includes a first switching module, a second switching module, and a third switching module;

[0014] The load module includes a first load module, a second load module, a third load module, and a fourth load module;

[0015] The power module is connected to the load module via the switch module;

[0016] Specifically, based on the charging status of the battery module by the DC / DC module, the battery module generates a second load module.

[0017] Furthermore, the power module is connected to the load module via a switching module, including:

[0018] The first switch module is equipped with a main power supply circuit and a backup power supply circuit;

[0019] The discharge circuit of the DC / DC module is connected to the main power supply circuit of the first load module and the power supply circuit of the third load module via the first switching module;

[0020] The discharge circuit of the DC / DC module is connected to the backup power supply circuit of the first load module and the power supply circuit of the fourth load module through the series circuit of the first switch module and the third switch module.

[0021] The discharge circuit of the DC / DC module is connected to the charging and discharging circuit of the battery module through the series circuit of the first switch module, the third switch module, and the second switch module.

[0022] Specifically, when the first switch module, the third switch module, and the second switch module are in the connected state, the DC / DC module enters the state of charging the battery module, and the battery module generates the second load module.

[0023] Furthermore, it also includes: a control module;

[0024] The control module is used to collect status information of the power module, load module and switch module, and to control the working status of the switch module.

[0025] The control module controls the on / off state of the switch module according to the voltage state of the DC / DC module and / or the battery module.

[0026] Specifically, the health status of the main power supply circuit and / or backup power supply circuit of the first load module is detected based on the on / off state of the control switch module.

[0027] According to a second aspect of the present invention, a method for setting up a vehicle power supply system is provided, the method comprising:

[0028] Obtain vehicle operating mode information;

[0029] The vehicle operation mode information includes first operation mode information, second operation mode information, and third operation mode information;

[0030] The first operating mode information includes controlling the vehicle to drive safely based on the normal status of the DC / DC module and the battery module;

[0031] The second operating mode information includes controlling the vehicle to pull over to the side of the road based on the state of the DC / DC module being abnormal while the battery module is normal;

[0032] The third operating mode information includes controlling the vehicle to travel at a limited speed based on the state of the DC / DC module being normal and the battery module being abnormal.

[0033] Furthermore, it also includes:

[0034] Based on the vehicle operating mode information, vehicle loads are categorized;

[0035] The vehicle load classification includes dividing the vehicle load into a first load module, a second load module, a third load module, and a fourth load module;

[0036] The first load module includes a main power supply circuit and a backup power supply circuit.

[0037] The third and fourth load modules include a power supply circuit.

[0038] The second load module includes a second load module generated by the battery module based on the charging status of the battery module.

[0039] Furthermore, the vehicle load classification based on the vehicle operating mode information also includes:

[0040] In the second operating mode, the charging and discharging circuit of the battery module is connected to the backup power supply circuit of the first load module and the power supply circuit of the third load module, and the discharge circuit of the DC / DC module is disconnected from the vehicle load.

[0041] In the third operating mode, the discharge circuit of the DC / DC module is connected to the main power supply circuit of the first load module and the power supply circuit of the fourth load module, and disconnects the charging and discharging circuit of the battery module from the vehicle load.

[0042] In the first operating mode, the discharge circuit of the DC / DC module and / or the charging and discharging circuit of the battery module are connected to the power supply circuits of the first load module, the third load module and the fourth load module.

[0043] According to three aspects of the present invention, a vehicle power supply system control method is provided, the vehicle power supply system control method comprising:

[0044] Obtain vehicle status information;

[0045] The vehicle status information includes the status information of the power module;

[0046] The status information of the power module includes the health status information of the battery module or the DC / DC module;

[0047] If both the DC / DC module and the battery module are functioning normally, control the vehicle to operate in the first operating mode.

[0048] If the DC / DC module malfunctions but the battery module is normal, control the vehicle to operate in the second operating mode;

[0049] If the DC / DC module is normal but the battery module is abnormal, control the vehicle to operate in the third operating mode.

[0050] Furthermore, the vehicle status information also includes the status information of the load module:

[0051] Check whether the power supply circuit status of the first load module, the second load module, the third load module and / or the fourth load module is normal;

[0052] If the voltage status of the charging and discharging circuits of the battery module is normal when connected to the backup power supply circuit of the first load module and the power supply circuit of the third load module, and the discharge circuit of the DC / DC module is disconnected from the vehicle load, then the vehicle can be controlled to operate in the second operating mode.

[0053] If the voltage status of the DC / DC module's discharge circuit is normal when connected to the main power supply circuit of the first load module and the power supply circuit of the fourth load module, and the connection between the battery module's charging and discharging circuits and the vehicle load is disconnected, then the vehicle is allowed to operate in the third operating mode.

[0054] If the voltage status of the discharge circuit of the DC / DC module connected to the power supply circuits of the first load module, the second load module, the third load module, and the fourth load module is normal, then the vehicle is allowed to operate in the first operating mode.

[0055] According to four aspects of the present invention, a method for detecting a vehicle power supply system is provided, the method comprising,

[0056] Obtain information about the vehicle's operating mode;

[0057] Control the on / off state of the switch module according to the current vehicle operating mode;

[0058] Based on the on / off state of the switch module, collect the voltage status information of the power supply circuit of the first load module, the third load module, and / or the fourth load module;

[0059] The health status of the vehicle's power supply system is detected by corresponding the on / off state of the switch module and the voltage state of the power supply circuit.

[0060] Furthermore, the step of detecting the health status of the vehicle power supply system based on the correspondence between the on / off state of the switch module and the voltage state of the power supply circuit includes:

[0061] When the vehicle is operating in the second operating mode, the first switch module is disconnected and the second and third switch modules are closed.

[0062] The third switch module is controlled to periodically disconnect, and the voltage status of the main power supply circuit of the first load module and the power supply circuit of the third load module are collected respectively in the periodic state of the third switch module disconnection.

[0063] When the third switch module is in the off state, determine whether the voltage state of the main power supply circuit of the first load module and the power supply circuit of the third load module is zero respectively;

[0064] If yes, then when the third switch module returns to the closed state, it is determined whether the voltage state of the main power supply circuit of the first load module and the power supply circuit of the third load module has returned to the normal voltage value.

[0065] If yes, then output data showing that the vehicle's power supply system is functioning normally in the third operating mode.

[0066] Furthermore, the step of detecting the state of the vehicle power supply system based on the correspondence between the on / off state of the switch module and the voltage state of the power supply circuit also includes:

[0067] When the vehicle is operating in the third operating mode, the second switch module is disconnected and the first and third switch modules are closed.

[0068] The third switch module is controlled to periodically disconnect, and the voltage status of the backup power supply circuit of the first load module and the power supply circuit of the fourth load module are collected respectively in the periodic state of the third switch module disconnection.

[0069] When the third switch module is in the off state, determine whether the voltage state of the backup power supply circuit of the first load module and the power supply circuit of the fourth load module are both zero.

[0070] If yes, then when the third switch module returns to the closed state, determine whether the voltage state of the backup power supply circuit of the first load module and the power supply circuit of the fourth load module has returned to the normal voltage value.

[0071] If yes, then output data showing that the vehicle's power supply system is functioning normally in the second operating mode.

[0072] Furthermore, the step of detecting the state of the vehicle power supply system based on the correspondence between the on / off state of the switch module and the voltage state of the power supply circuit also includes:

[0073] When the vehicle is operating in the first operating mode, the second switch module, the third switch module, and the second switch module are closed.

[0074] The third switch module and the first switch module are controlled to disconnect synchronously and periodically, and the voltage status of the main power supply circuit of the first load module and the power supply circuit of the third load module are collected respectively in the periodic state of the synchronous disconnection of the third switch module and the first switch module.

[0075] When the third switch module and the first switch module are in the synchronous disconnected state, determine whether the voltage state of the main power supply circuit of the first load module and the power supply circuit of the third load module are both zero.

[0076] If yes, then when the third switch module and the first switch module synchronously return to the closed state, determine whether the voltage state of the main power supply circuit of the first load module and the power supply circuit of the third load module has returned to the normal voltage value.

[0077] If so, then control the third switch module and the second switch module to disconnect synchronously and periodically, and corresponding to the periodic state of the third switch module and the second switch module being disconnected synchronously, collect the voltage state of the backup power supply circuit of the first load module and the power supply circuit of the fourth load module respectively.

[0078] When the third switch module and the second switch module are in the synchronous disconnected state, determine whether the voltage state of the backup power supply circuit of the first load module and the power supply circuit of the fourth load module are both zero.

[0079] If yes, then when the third switch module and the second switch module synchronously return to the closed state, determine whether the voltage state of the backup power supply circuit of the first load module and the power supply circuit of the fourth load module have both returned to the normal voltage value.

[0080] If yes, then output data showing that the vehicle's power supply system is functioning normally in the first operating mode.

[0081] Furthermore, it is characterized by including:

[0082] Obtain information about the vehicle's current operating mode;

[0083] If the vehicle is currently in the first operating mode, monitor the status information of the power module, including the status information of the DC / DC module being abnormal and the battery module being normal.

[0084] Based on the status information that the DC / DC module is malfunctioning while the battery module is functioning normally, the vehicle switches to the second operating mode.

[0085] Capture vehicle zero-speed status information;

[0086] Based on the detection of the vehicle's zero-speed state, the vehicle initiates a power supply self-detection of the vehicle power supply system corresponding to the second operating mode;

[0087] If the test is successful, a self-test report will be generated and information from the vehicle's maintenance records will be captured.

[0088] If the record information indicating that the vehicle repair is completed is captured, the vehicle power supply system will start the power supply self-test of the corresponding first operating mode.

[0089] If the detection is successful, the system will output the normal status information of the DC / DC module and the battery module, and switch to the first operating mode.

[0090] Furthermore, it is characterized by including:

[0091] Obtain information about the vehicle's current operating mode;

[0092] If the vehicle is currently in the first operating mode, monitor the status information of the power module, including the status information of the DC / DC module being normal and the battery module being abnormal.

[0093] Based on the status information that the DC / DC module is normal and the battery module is abnormal, the vehicle switches to the third operating mode.

[0094] Capture vehicle zero-speed status information;

[0095] Based on the detection of the vehicle's zero-speed state, the vehicle's power supply system starts a power supply self-detection corresponding to the third operating mode.

[0096] If the test is successful, a self-test report will be generated and information from the vehicle's maintenance records will be captured.

[0097] If the record information indicating that the vehicle repair is completed is captured, the vehicle power supply system will start the power supply self-test of the corresponding first operating mode.

[0098] If the detection is successful, the system will output the normal status information of the DC / DC module and the battery module, and switch to the first operating mode.

[0099] According to five aspects of the present invention, a vehicle power supply system setting device is provided, the vehicle power supply system setting device comprising:

[0100] The mode information module is used to obtain vehicle operating mode information;

[0101] The vehicle operation mode information includes first operation mode information, second operation mode information, and third operation mode information;

[0102] The first operating mode information includes controlling the vehicle to drive safely based on the normal status of the DC / DC module and the battery module;

[0103] The second operating mode information includes controlling the vehicle to pull over to the side of the road based on the state of the DC / DC module being abnormal while the battery module is normal;

[0104] The third operating mode information includes controlling the vehicle to travel at a limited speed based on the state of the DC / DC module being normal and the battery module being abnormal.

[0105] According to six aspects of the present invention, a vehicle power supply system control device is provided, the vehicle power supply system control device comprising:

[0106] The vehicle status module is used to obtain vehicle status information;

[0107] The vehicle status information includes the status information of the power module;

[0108] The status information of the power module includes the health status information of the battery module or the DC / DC module;

[0109] If both the DC / DC module and the battery module are functioning normally, control the vehicle to operate in the first operating mode.

[0110] If the DC / DC module malfunctions but the battery module is normal, control the vehicle to operate in the second operating mode;

[0111] If the DC / DC module is normal but the battery module is abnormal, control the vehicle to operate in the third operating mode.

[0112] According to seven aspects of the present invention, a vehicle power supply system testing device is provided, the vehicle power supply system testing device comprising,

[0113] The vehicle operation module is used to acquire information about the vehicle's operating mode.

[0114] The switch control module is used to control the conduction state of the switch module according to the current vehicle operating mode;

[0115] The loop voltage module is used to collect voltage status information of the power supply loops of the first load module, the third load module, and / or the fourth load module according to the conduction status of the switch module.

[0116] The system detection module is used to detect the health status of the vehicle's power supply system based on the corresponding state of the switching module's conduction state and the voltage state of the power supply circuit.

[0117] According to eight aspects of the present invention, an electronic device is provided, comprising: a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other via the communication bus;

[0118] The memory stores a computer program that, when executed by the processor, causes the processor to perform the steps of the vehicle power supply system setting method, the steps of the vehicle power supply system control method, and / or the steps of the vehicle power supply system detection method.

[0119] According to nine aspects of the present invention, a computer-readable storage medium is provided storing a computer program executable by an electronic device, which, when run on the electronic device, causes the electronic device to perform the steps of the vehicle power supply system setting method, the steps of the vehicle power supply system control method, and / or the steps of the vehicle power supply system detection method.

[0120] According to ten aspects of the present invention, a vehicle is provided, comprising:

[0121] An electronic device for implementing the steps of the vehicle power supply system setting method, the steps of the vehicle power supply system control method, and / or the steps of the vehicle power supply system detection method;

[0122] The processor runs a program that, when the program is running, executes the steps of the vehicle power supply system setting method, the steps of the vehicle power supply system control method, and / or the steps of the vehicle power supply system detection method from data output by the electronic device.

[0123] A storage medium for storing a program that, when running, executes the steps of the vehicle power supply system setting method, the steps of the vehicle power supply system control method, and / or the steps of the vehicle power supply system detection method in response to data output from an electronic device.

[0124] The above solution achieves the following beneficial technical effects:

[0125] This application uses periodic switching to enable the detection and identification of the power supply status of the first load, thus completing the detection of the power supply circuit without affecting the normal operation of the first load.

[0126] This application verifies the power supply circuit of the first load after a DC / DC power module malfunctions, preventing the failure to detect damage to part of the power supply circuit due to a DC / DC power module malfunction from going undetected in a timely manner.

[0127] This application ensures that the power supply circuit for the primary load is always in a more reliable power supply state by frequently testing the main and backup power supply circuits. Attached Figure Description

[0128] Figure 1 This is a structural diagram of a vehicle power system provided in one or more embodiments of the present invention.

[0129] Figure 2 This is a flowchart of a vehicle power supply system setting method provided by one or more embodiments of the present invention.

[0130] Figure 3 This is a flowchart of a vehicle power supply system control method provided in one or more embodiments of the present invention.

[0131] Figure 4 This is a flowchart of a vehicle power supply system testing method provided in one or more embodiments of the present invention.

[0132] Figure 5 This is a structural diagram of a vehicle power supply system device provided in one or more embodiments of the present invention.

[0133] Figure 6 This is a structural diagram of a vehicle power supply system control device provided in one or more embodiments of the present invention.

[0134] Figure 7 This is a structural diagram of a vehicle power supply system detection device provided in one or more embodiments of the present invention.

[0135] Figure 8 A schematic diagram of the connection topology of a low-voltage intelligent power distribution system according to a specific embodiment of the present invention.

[0136] Figure 9A schematic diagram of the structure of an intelligent power distribution controller according to a specific embodiment of the present invention.

[0137] Figure 10 A block diagram of an electronic device structure for a vehicle power system control method provided in one or more embodiments of the present invention.

[0138] Reference numerals: 21, DC / DC power input terminal; 22, low-voltage battery power input terminal; 23, low-voltage battery charging terminal; 52, battery output terminal; 51, DC / DC output terminal. Detailed Implementation

[0139] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0140] Figure 1 This is a structural diagram of a vehicle power system provided in one or more embodiments of the present invention.

[0141] like Figure 1 The vehicle power supply system shown includes:

[0142] Power supply module, switch module, and load module;

[0143] The power supply module includes a DC / DC module and a battery module;

[0144] The switch module includes a first switch module, a second switch module, and a third switch module;

[0145] The load module includes a first load module, a second load module, a third load module, and a fourth load module;

[0146] The power module is connected to the load module via the switch module;

[0147] Specifically, based on the charging status of the battery module by the DC / DC module, the battery module generates a second load module.

[0148] Specifically, in this embodiment, the output side of the DC / DC module is connected to the vehicle load, and the input side of the DC / DC module is connected to the charging gun, internal combustion engine, etc. The DC / DC module mainly functions to convert high-voltage electricity from the charging gun, internal combustion engine, etc., into low-voltage electricity. The DC / DC module is regarded as a "power source" and participates in the power supply to the load.

[0149] The power module includes a DC / DC module and a battery module, and the load module includes a first load module, a second load module, a third load module and a fourth load module. The circuit connection between the power module and the load module is controlled by a switch module to form different circuit patterns, corresponding to different vehicle operating modes.

[0150] In addition to supplying power to the first, third, and fourth load modules, the DC / DC module can also charge the battery module. When the battery module is charging, it cannot function as a complete power source and can be considered as a second load module powered by the DC / DC module.

[0151] The switching module also includes a fourth switching module; the fourth switching module includes a normally open contact, a normally closed contact, and a common contact; the common contact is located in the third or fourth load module, and the normally open or normally closed contact is located in the backup power supply circuit and the main power supply circuit of the first load module, respectively. Depending on the operating strategy of the vehicle's operating mode, the third load module can be switched to the fourth load module, or vice versa.

[0152] In this embodiment, the power module is connected to the load module via the switch module, including:

[0153] The first switch module is equipped with a main power supply circuit and a backup power supply circuit;

[0154] The discharge circuit of the DC / DC module is connected to the main power supply circuit of the first load module and the power supply circuit of the third load module via the first switching module;

[0155] The discharge circuit of the DC / DC module is connected to the backup power supply circuit of the first load module and the power supply circuit of the fourth load module through the series circuit of the first switch module and the third switch module.

[0156] The discharge circuit of the DC / DC module is connected to the charging and discharging circuit of the battery module through the series circuit of the first switch module, the third switch module, and the second switch module.

[0157] Specifically, when the first switch module, the third switch module, and the second switch module are in the connected state, the DC / DC module enters the state of charging the battery module, and the battery module generates the second load module.

[0158] Specifically, in accordance with the design requirements for vehicle safety redundancy, the first load module has one more backup power supply circuit than the fourth or third load module; the battery module acts as the second load module in charging mode, and its charging and discharging circuits are also used as power supply circuits.

[0159] In this embodiment, it also includes: a control module;

[0160] The control module is used to collect status information from the power module, load module, and switch module, and to control the operating status of the switch module.

[0161] The control module controls the on / off state of the switching module based on the voltage status of the DC / DC module and / or the battery module.

[0162] Specifically, the health status of the main power supply circuit and / or backup power supply circuit of the first load module is detected based on the on / off state of the control switch module.

[0163] Specifically, to ensure vehicle safety, the health status of the power supply circuit for the first load module needs to be monitored, meaning that continuous power supply to the first load module should be ensured as much as possible. This involves briefly disconnecting a power supply circuit and checking its voltage to identify its health status. For example, during the corresponding disconnection and reconnection cycle, if the voltage on the power supply circuit drops to zero and then returns to normal, it's possible to simultaneously check whether the operation of the first load is affected.

[0164] Figure 2 This is a flowchart of a vehicle power supply system setting method provided by one or more embodiments of the present invention.

[0165] like Figure 2 The vehicle power supply system setup method shown includes:

[0166] Step S1: Obtain vehicle operating mode information;

[0167] The vehicle operation mode information includes first operation mode information, second operation mode information and third operation mode information;

[0168] Step S1.1, the first operating mode information includes controlling the vehicle to drive safely based on the normal status of the DC / DC module and the battery module;

[0169] Step S1.2, the second operating mode information includes controlling the vehicle to pull over to the side of the road based on the state of the DC / DC module being abnormal and the battery module being normal;

[0170] Step S1.3, the third operating mode information includes controlling the vehicle to travel at a limited speed based on the state of the DC / DC module being normal and the battery module being abnormal.

[0171] Specifically, different operating strategies are adopted according to the different health states of the power modules, manifesting as different operating modes. For example, if the DC / DC module is malfunctioning but the battery module is normal, the battery module loses its energy replenishment channel, the vehicle cannot maintain a long range, and it is necessary to preserve the battery's energy storage as much as possible, adopting a strategy of pulling over and waiting for assistance. If the DC / DC module is normal but the battery module is malfunctioning, the lack of battery module assistance puts a heavy burden on the engine, adopting a strategy of speed-limited driving. The second and third operating modes are equivalent to the vehicle experiencing "limpness" to varying degrees.

[0172] In this embodiment, it also includes:

[0173] Vehicle load is categorized based on vehicle operating mode information;

[0174] The vehicle load is classified into four modules: first load module, second load module, third load module, and fourth load module.

[0175] The first load module includes a main power supply circuit and a backup power supply circuit.

[0176] The third and fourth load modules include a power supply circuit.

[0177] The second load module includes a second load module generated by the battery module based on the charging status of the battery module.

[0178] Specifically, to achieve the purpose of vehicle "limping," it is necessary to simplify the handling of loads that are "unimportant" or do not affect vehicle safety. First, the vehicle loads are classified. For example, the loads necessary for vehicle "limping" are classified as the first load module, and the loads that are highly related to the second and third operating modes but do not affect the safety of "limping" are classified as the third load module and the fourth load module, respectively.

[0179] In this embodiment, vehicle load classification further includes:

[0180] In the second operating mode, the charging and discharging circuit of the battery module is connected to the backup power supply circuit of the first load module and the power supply circuit of the third load module, and the discharge circuit of the DC / DC module is disconnected from the vehicle load.

[0181] In the third operating mode, the discharge circuit of the DC / DC module is connected to the main power supply circuit of the first load module and the power supply circuit of the fourth load module, and disconnects the charging and discharging circuit of the battery module from the vehicle load.

[0182] In the first operating mode, the discharge circuit of the DC / DC module and / or the charging and discharging circuit of the battery module are connected to the power supply circuits of the first load module, the third load module and the fourth load module.

[0183] Specifically, by connecting the switch module, the power supply status of the load can be controlled according to the corresponding vehicle operating mode.

[0184] Figure 3 This is a flowchart of a vehicle power supply system control method provided in one or more embodiments of the present invention.

[0185] like Figure 3 The vehicle power supply system control method shown includes:

[0186] Step S2: Obtain vehicle status information;

[0187] Vehicle status information includes the status information of the power module;

[0188] The status information of the power module includes the health status information of the battery module or DC / DC module;

[0189] Step S2.1: If the DC / DC module and the battery module are normal, control the vehicle to operate in the first operating mode.

[0190] Step S2.2: If the DC / DC module is malfunctioning but the battery module is normal, control the vehicle to operate in the second operating mode.

[0191] Step S2.3: If the DC / DC module is normal but the battery module is abnormal, control the vehicle to operate in the third operating mode.

[0192] Specifically, different operating modes are adopted based on the health status of the battery module or DC / DC module. This includes controlling the power supply circuit via a switching module to correspond to different operating modes; for example, isolating abnormal DC / DC modules or battery modules from the power supply circuit; adopting a suitable "limp-out" strategy when only DC / DC modules or battery modules remain; and supplying power to the first load module, as well as the third or fourth load module, according to the "limp-out" strategy.

[0193] In this embodiment, the vehicle status information also includes the status information of the load module:

[0194] Check whether the power supply circuit status of the first load module, the second load module, the third load module and / or the fourth load module is normal;

[0195] If the voltage status of the charging and discharging circuits of the battery module is normal when connected to the backup power supply circuit of the first load module and the power supply circuit of the third load module, and the discharge circuit of the DC / DC module is disconnected from the vehicle load, then the vehicle can be controlled to operate in the second operating mode.

[0196] If the voltage status of the DC / DC module's discharge circuit is normal when connected to the main power supply circuit of the first load module and the power supply circuit of the fourth load module, and the connection between the battery module's charging and discharging circuits and the vehicle load is disconnected, then the vehicle is allowed to operate in the third operating mode.

[0197] If the voltage status of the discharge circuit of the DC / DC module connected to the power supply circuits of the first load module, the second load module, the third load module, and the fourth load module is normal, then the vehicle is allowed to operate in the first operating mode.

[0198] Specifically, in the first operating mode, there is a state where only the DC / DC module or the battery module provides power, but the DC / DC module or the battery module is in a healthy state and there is no need to control the vehicle to operate in the second or third operating mode. That is, if the power supply, circuit and other health conditions are met in the first operating mode, the requirements for operation in the second or third operating mode are also met.

[0199] The switching module controls the connection of the power supply circuit according to the instruction requirements. If the health status of the power supply and circuit meets the requirements of the corresponding operating mode, then operation is allowed in that operating mode. That is, if the vehicle is allowed to operate in the first operating mode, it is also allowed to operate in the second and third operating modes. However, if the vehicle is allowed to operate in the second and third operating modes, it may not be allowed to operate in the first operating mode due to the influence of the power supply health status.

[0200] Allowing the vehicle to operate in the second operating mode, the third operating mode, or the first operating mode means allowing it to operate according to preset strategies such as controlling the vehicle to pull over, controlling the vehicle to drive at a limited speed, and controlling the vehicle to drive safely. To obtain "permission," it is first necessary to ensure that the power supply circuit of the voltage module in the "abnormal" state is "isolated" through the switching module.

[0201] After switching the vehicle from the first operating mode to the second or third operating mode, a self-test of the power supply circuit needs to be performed at an opportune time. This self-test also needs to be performed when switching back to the first operating mode. The self-test items include whether the power supply circuit is functioning correctly, whether the sensors monitoring the power supply circuit are functioning correctly (related to power supply), and whether the load on the power supply circuit is functioning correctly (related to power supply).

[0202] "Finding the right moment" includes finding the right time to switch from the first operating mode to the second operating mode, first disconnecting the first switch module, then parking the vehicle on the side of the road, and finally initiating the detection of the main power supply circuit of the first load module and the power supply circuit of the third load module. The detection process includes observing whether the voltage of the main power supply circuit of the first load module fluctuates with the switching of the third switch module by periodically switching the third switch module on and off, observing whether the first and third load modules are turned off and started when the third switch module is switched on and off, and observing whether the sensors on the power supply circuit return the corresponding voltage detection signals, etc.

[0203] In one embodiment, the windshield wipers are a third load module, and their power supply circuit is connected in parallel with the main power supply circuit of the first load. After the third switch module completes its on / off detection, it can remain disconnected; that is, in the second operating mode, when parking on the side of the road, the windshield wipers do not require continued power. However, if, after power calculation, the vehicle can rely on the remaining battery power to reach a location suitable for long-term storage (e.g., the garage at home) or a repair location (e.g., a scheduled repair shop), and the sensor detects rain, then the fourth switch module can temporarily connect the windshield wipers to the backup power supply circuit of the first load, while simultaneously disconnecting them from the main power supply circuit of the first load. This makes the windshield wipers a fourth load module, ensuring the vehicle can use the wiper function while continuously driving, while simultaneously avoiding powering other third load modules and reducing unnecessary consumption.

[0204] Figure 4 This is a flowchart of a vehicle power supply system testing method provided in one or more embodiments of the present invention.

[0205] like Figure 4 The vehicle power supply system testing method shown includes,

[0206] Step S3: Obtain information on the vehicle's operating mode;

[0207] Step S4: Control the on / off state of the switch module according to the current vehicle operating mode;

[0208] Step S5: Based on the on / off state of the switch module, collect the voltage status information of the power supply circuit of the first load module, the third load module, and / or the fourth load module.

[0209] Step S6: Detect the health status of the vehicle power supply system based on the corresponding state of the switch module's on / off state and the power supply circuit voltage state.

[0210] Specifically, in real-world operating scenarios, power module failures are often unpredictable and complex. For example, a DC / DC module might leak high voltage from its input side to its output side, posing a risk of damage to the load module, power supply circuit, and detection module. While sensors can provide feedback on the DC / DC module's status, triggering a control switch to disconnect the module, there is an inherent delay. Therefore, in addition to periodically monitoring the vehicle's power supply system's health, it's necessary to check the system's health at least immediately after the control switch disconnects the DC / DC module. The same principle applies to battery module malfunctions.

[0211] In this embodiment, detecting the health status of the vehicle power supply system based on the correspondence between the on / off state of the switch module and the voltage state of the power supply circuit includes:

[0212] When the vehicle is operating in the second operating mode, the first switch module is disconnected and the second and third switch modules are closed.

[0213] The third switch module is controlled to periodically disconnect, and the voltage status of the main power supply circuit of the first load module and the power supply circuit of the third load module are collected respectively in the periodic state of the third switch module disconnection.

[0214] When the third switch module is in the off state, determine whether the voltage state of the main power supply circuit of the first load module and the power supply circuit of the third load module is zero respectively;

[0215] If yes, then when the third switch module returns to the closed state, it is determined whether the voltage state of the main power supply circuit of the first load module and the power supply circuit of the third load module has returned to the normal voltage value.

[0216] If yes, then output data showing that the vehicle's power supply system is functioning normally in the third operating mode.

[0217] Specifically, in the second operating mode, the first switching module is disconnected, cutting off the power supply circuit to the DC / DC module; the second and third switching modules are closed, maintaining power supply only to the battery module. In this switching module state, the third switching module is periodically disconnected, causing the voltage in the main power supply circuit of the first load module and the power supply circuit of the third load module to drop to zero volts as the third switching module periodically disconnects. Sensors placed on the power supply circuit can detect any abnormalities.

[0218] At the same time, observe the operating status of the first load module. If the working status is not interrupted due to the periodic disconnection of the third switch module, it can be determined that the current backup power supply circuit can still supply power normally, but it is not yet possible to detect whether the other sensors on the backup power supply circuit are in normal condition.

[0219] It cannot be ruled out that the sensor placed on the power supply circuit may be damaged. Alternatively, by controlling the third switch module to periodically disconnect, and without receiving synchronous feedback information on the voltage status of the main power supply circuit of the first load module or the power supply circuit of the third load module, it is possible to obtain data to determine whether the sensor is in an abnormal state.

[0220] In this embodiment, detecting the state of the vehicle power supply system based on the correspondence between the on / off state of the switch module and the voltage state of the power supply circuit further includes:

[0221] When the vehicle is operating in the third operating mode, the second switch module is disconnected and the first and third switch modules are closed.

[0222] The third switch module is controlled to periodically disconnect, and the voltage status of the backup power supply circuit of the first load module and the power supply circuit of the fourth load module are collected respectively in the periodic state of the third switch module disconnection.

[0223] When the third switch module is in the off state, determine whether the voltage state of the backup power supply circuit of the first load module and the power supply circuit of the fourth load module are both zero.

[0224] If yes, then when the third switch module returns to the closed state, determine whether the voltage state of the backup power supply circuit of the first load module and the power supply circuit of the fourth load module has returned to the normal voltage value.

[0225] If yes, then output data showing that the vehicle's power supply system is functioning normally in the second operating mode.

[0226] Specifically, similarly, when the vehicle is operating in the third mode, the second switch module is disconnected, cutting off the power supply circuit to the battery module; the first and third switch modules are closed, maintaining power supply only to the DC / DC module. In this switch module state, periodically disconnecting the third switch module causes the voltage in the backup power supply circuit of the first load module and the power supply circuit of the fourth load module to drop to zero volts as the third switch module periodically disconnects. Sensors placed on the power supply circuit can detect any abnormalities in the power supply circuit.

[0227] At the same time, observe the operating status of the first load module. If the working status is not interrupted due to the periodic disconnection of the third switch module, it can be determined that the current main power supply circuit can still supply power normally, but it is not yet possible to detect whether the other sensors on the backup power supply circuit are in normal condition.

[0228] It cannot be ruled out that the sensor placed on the power supply circuit may be damaged. Alternatively, by controlling the third switch module to periodically disconnect, and without receiving synchronous feedback on the voltage status of the backup power supply circuit of the first load module or the power supply circuit of the fourth load module, it is possible to obtain data to determine whether the sensor is in an abnormal state.

[0229] In this embodiment, detecting the state of the vehicle power supply system based on the correspondence between the on / off state of the switch module and the voltage state of the power supply circuit further includes:

[0230] When the vehicle is operating in the first operating mode, the second switch module, the third switch module, and the second switch module are closed.

[0231] The third switch module and the first switch module are controlled to disconnect synchronously and periodically, and the voltage status of the main power supply circuit of the first load module and the power supply circuit of the third load module are collected respectively in the periodic state of the synchronous disconnection of the third switch module and the first switch module.

[0232] When the third switch module and the first switch module are in the synchronous disconnected state, determine whether the voltage state of the main power supply circuit of the first load module and the power supply circuit of the third load module are both zero.

[0233] If yes, then when the third switch module and the first switch module synchronously return to the closed state, determine whether the voltage state of the main power supply circuit of the first load module and the power supply circuit of the third load module has returned to the normal voltage value.

[0234] If so, then control the third switch module and the second switch module to disconnect synchronously and periodically, and corresponding to the periodic state of the third switch module and the second switch module being disconnected synchronously, collect the voltage state of the backup power supply circuit of the first load module and the power supply circuit of the fourth load module respectively.

[0235] When the third switch module and the second switch module are in the synchronous disconnected state, determine whether the voltage state of the backup power supply circuit of the first load module and the power supply circuit of the fourth load module are both zero.

[0236] If yes, then when the third switch module and the second switch module synchronously return to the closed state, determine whether the voltage state of the backup power supply circuit of the first load module and the power supply circuit of the fourth load module have both returned to the normal voltage value.

[0237] If yes, then output data showing that the vehicle's power supply system is functioning normally in the first operating mode.

[0238] Specifically, in the first operating mode, the power supply circuit detection in the second and third operating modes can be simulated separately to achieve comprehensive detection of the main power supply circuit and the backup power supply circuit.

[0239] In this embodiment, it also includes:

[0240] Obtain information about the vehicle's current operating mode;

[0241] If the vehicle is currently in the first operating mode, monitor the status information of the power module, including the status information of the DC / DC module being abnormal and the battery module being normal.

[0242] Based on the status information that the DC / DC module is malfunctioning while the battery module is functioning normally, the vehicle switches to the second operating mode.

[0243] Capture vehicle zero-speed status information;

[0244] Based on the detection of the vehicle's zero-speed state, the vehicle initiates a power supply self-detection of the vehicle power supply system corresponding to the second operating mode;

[0245] If the test is successful, a self-test report will be generated and information from the vehicle's maintenance records will be captured.

[0246] If the record information indicating that the vehicle repair is completed is captured, the vehicle power supply system will start the power supply self-test of the corresponding first operating mode.

[0247] If the detection is successful, the system will output the normal status information of the DC / DC module and the battery module, and switch to the first operating mode.

[0248] Specifically, in one operating scenario, if a vehicle suddenly exhibits a DC / DC module malfunction while the battery module remains normal, the vehicle immediately switches to a second operating mode. Along with this switch, the circuits connecting the DC / DC module to other loads are disconnected by a switching module. During the pullover process in the second operating mode, the vehicle's zero-speed state is captured. When the vehicle reaches zero speed, it is considered to be in a relatively safe state. However, due to the DC / DC module malfunction (e.g., abnormal high voltage causing a breakdown risk), in addition to being handled by maintenance personnel, the efficiency of inspection and maintenance can be further improved by first self-testing the extent of the damage, such as generating a self-test report for maintenance personnel to read.

[0249] After the repairs, the vehicle was restarted. However, the repair process itself is not without its flaws. A power supply self-test of the vehicle's electrical system corresponding to the first operating mode should be performed first. If the test passes, the second operating mode should be switched back to the first operating mode to control the vehicle for safe driving.

[0250] The second operating mode includes, but is not limited to, strategies for parking on the side of the road. It also includes, after a successful power supply self-detection, retrieving navigation and battery information to assess the feasibility of reaching the preset navigation destination from the current location. If feasible, the vehicle is restarted, and route and speed are planned based on the remaining battery power to ensure that the vehicle can reach its destination using the remaining battery power.

[0251] The destination includes locations where vehicles can be stored long-term (e.g., the garage at home) and locations where repairs can be made (e.g., a scheduled repair shop), ensuring proper handling of the vehicle and the safety of the passengers.

[0252] In this embodiment, it also includes:

[0253] Obtain information about the vehicle's current operating mode;

[0254] If the vehicle is currently in the first operating mode, monitor the status information of the power module, including the status information of the DC / DC module being normal and the battery module being abnormal.

[0255] Based on the status information that the DC / DC module is normal and the battery module is abnormal, the vehicle switches to the third operating mode.

[0256] Capture vehicle zero-speed status information;

[0257] Based on the detection of the vehicle's zero-speed state, the vehicle's power supply system starts a power supply self-detection corresponding to the third operating mode.

[0258] If the test is successful, a self-test report will be generated and information from the vehicle's maintenance records will be captured.

[0259] If the record information indicating that the vehicle repair is completed is captured, the vehicle power supply system will start the power supply self-test of the corresponding first operating mode.

[0260] If the detection is successful, the system will output the normal status information of the DC / DC module and the battery module, and switch to the first operating mode.

[0261] Specifically, similarly, in an operating scenario, if the vehicle suddenly exhibits a state where the battery module is malfunctioning while the DC / DC module is functioning normally, the vehicle immediately switches to the third operating mode. Along with switching to the third operating mode, the battery module is disconnected by the switching module.

[0262] Similarly, a self-test report is generated. Likewise, a power supply self-test of the vehicle's power supply system corresponding to the first operating mode can be performed first. If the test passes, the second operating mode is switched back to the first operating mode to control the vehicle for safe driving.

[0263] Figure 5This is a structural diagram of a vehicle power supply system device provided in one or more embodiments of the present invention.

[0264] like Figure 5 The vehicle power supply system setup shown includes: a mode information module and a vehicle control module;

[0265] The mode information module is used to obtain vehicle operating mode information;

[0266] The vehicle operation mode information includes first operation mode information, second operation mode information and third operation mode information;

[0267] Vehicle control module, used for

[0268] The first operating mode information includes controlling the vehicle's safe operation based on the normal status of the DC / DC module and the battery module;

[0269] The second operating mode information includes controlling the vehicle to pull over to the side of the road based on the state of the DC / DC module being abnormal while the battery module is normal.

[0270] The third operating mode information includes controlling the vehicle's speed limit based on the state of the DC / DC module being normal and the battery module being abnormal.

[0271] Figure 6 This is a structural diagram of a vehicle power supply system control device provided in one or more embodiments of the present invention.

[0272] like Figure 6 The vehicle power supply system control device shown includes: a vehicle status module and a mode control module;

[0273] The vehicle status module is used to obtain vehicle status information;

[0274] Vehicle status information includes the status information of the power module;

[0275] The status information of the power module includes the health status information of the battery module or DC / DC module;

[0276] The mode control module is used to control the vehicle to operate in the first operating mode if the DC / DC module and the battery module are both normal.

[0277] If the DC / DC module malfunctions but the battery module is normal, control the vehicle to operate in the second operating mode;

[0278] If the DC / DC module is normal but the battery module is abnormal, control the vehicle to operate in the third operating mode.

[0279] Figure 7 This is a structural diagram of a vehicle power supply system detection device provided in one or more embodiments of the present invention.

[0280] like Figure 7 The vehicle power supply system testing device shown includes a vehicle operation module, a switch control module, a circuit voltage module, and a system testing module;

[0281] The vehicle operation module is used to acquire information about the vehicle's operating mode.

[0282] The switch control module is used to control the conduction state of the switch module according to the current vehicle operating mode;

[0283] The loop voltage module is used to collect voltage status information of the power supply loops of the first load module, the third load module, and / or the fourth load module according to the conduction status of the switch module.

[0284] The system detection module is used to detect the health status of the vehicle's power supply system based on the corresponding state of the switching module's conduction state and the voltage state of the power supply circuit.

[0285] It is worth noting that although this system only discloses the mode information module, vehicle control module, vehicle status module, mode control module, vehicle operation module, switch control module, loop voltage module, and system detection module, it does not mean that this device is limited to the above-mentioned basic functional modules. On the contrary, what this invention intends to express is that, based on the above-mentioned basic functional modules, those skilled in the art can arbitrarily add one or more functional modules in combination with existing technology to form an infinite number of embodiments or technical solutions. That is to say, this system is open rather than closed. It should not be assumed that the scope of protection of the claims of this invention is limited to the above-disclosed basic functional modules just because this embodiment only discloses a few basic functional modules.

[0286] The above solution achieves the following beneficial technical effects:

[0287] This application uses periodic switching to enable the detection and identification of the power supply status of the first load, thus completing the detection of the power supply circuit without affecting the normal operation of the first load.

[0288] This application verifies the power supply circuit of the first load after a DC / DC power module malfunctions, preventing the failure to detect damage to part of the power supply circuit due to a DC / DC power module malfunction from going undetected in a timely manner.

[0289] This application ensures that the power supply circuit for the primary load is always in a more reliable power supply state by frequently testing the main and backup power supply circuits.

[0290] Figure 8 A schematic diagram of the connection topology of a low-voltage intelligent power distribution system according to a specific embodiment of the present invention.

[0291] Figure 9 A schematic diagram of the structure of an intelligent power distribution controller according to a specific embodiment of the present invention.

[0292] In one specific embodiment, corresponding Figure 8 A power distribution system with comfort domain controller functionality, comprising a cab intelligent power distribution controller, a front chassis intelligent power distribution controller, and a rear chassis intelligent power distribution controller. Corresponding to... Figure 9 As shown, each intelligent power distribution controller comprises the following structure: an MCU detection and control unit, a power protection module, a switch acquisition module, a CAN communication output module, a power output module, and multiple load output circuits. The MCU detection and control unit is used for logical judgment of the outputs between modules; the power protection module is used for protecting the input circuit and controlling shutdown under abnormal conditions; the switch acquisition module is used for acquiring and analyzing external switch signals; the CAN communication output module is responsible for coordinating the CAN bus status; and the power output module and multiple load output circuits are responsible for converting the input circuit into multiple small-current output circuits, and monitoring their current, voltage, and other statuses in real time, and controlling their on / off states.

[0293] The DC / DC power supply module and the low-voltage battery module are directly connected to the low-voltage power distribution controller at the rear of the chassis. The power protection module can monitor the current and voltage of the two inputs in real time and feed them back to the MCU detection and control unit. The MCU detection and control unit performs logical judgments and sends instructions to the power protection module, which then takes corresponding actions. Under normal circumstances, the circuit in the power protection module is in a conducting state.

[0294] In this embodiment, the MCU detection and control unit serves as the central hub of the controller, handling analog-to-digital conversion, CAN communication, output control, and big data acquisition. Through logical judgment of input signals, it controls the high-side switch to adjust the power distribution output of each load. The MCU can be upgraded via the CAN bus, making it suitable for software reprogramming of different vehicle models.

[0295] The power protection module controls and protects against dual power inputs from both the DC / DC converter and the battery, ultimately outputting two independent power supplies to the power output module. The module detects undervoltage, overvoltage, and short circuits, and collects current data in real time, uploading diagnostic information to the bus via the MCU. The MCU controls the connection and disconnection between the DC / DC converter and the battery, between the DC / DC converter and the low-voltage power distribution system, and between the battery and the low-voltage power distribution system. In case of an abnormality in the DC / DC converter or the low-voltage battery, the MCU disconnects the MOS switch on the faulty side, isolating the fault and ensuring that the power supply circuits without faults remain unaffected. A configurable comparator allows for flexible setting of alarm thresholds for overvoltage, undervoltage, temperature, and time-current conditions to meet the needs of different vehicle models.

[0296] The power output module provides two independent and controllable power supplies from the power protection module, which are then divided into multiple load output circuits. The current in each circuit is protected and controlled by power components. The output load circuit can serve as a single power source for the equipment, or both outputs can simultaneously power the equipment. The high-side switch is a key component of the intelligent power distribution controller. It controls the current output and protects the circuit from electrical breakdown. Utilizing semiconductor technology, it incorporates built-in protection and energy absorption circuits, ensuring it will not be damaged even in the event of abnormal overcurrent. It features current detection capabilities, allowing real-time monitoring of the load and circuit operation, and offers multiple protection functions: overvoltage protection, overcurrent short-circuit protection, and overtemperature protection. The high-side switch can completely replace the traditional combination of fuses and relays, and offers superior functionality and performance. Traditional fuses protect circuits by melting upon heating during a fault; this is a one-time, non-recoverable process that requires replacement after melting. Fuse specifications are not continuous, commonly including 5A, 10A, and 15A, with only one size increase required for intermediate currents. During overcurrent protection, the fusing time varies greatly with current and is affected by ambient temperature changes, leading to inaccurate protection characteristics. To compensate for these risks, fuse selection must increase margins through base derating, temperature derating, and compatibility with different specifications, significantly increasing the wire diameter required for compatibility. However, high-side switching current output can be flexibly controlled. By updating the control time and current protection curve via software, the protection characteristics are electronically digitized and are not limited by temperature or specifications. Traditional relays have a lifespan of 10⁵ to 10⁶ cycles, while high-side switches have a significantly longer lifespan, handling up to 3000 MJ of single-pulse energy and 550 MJ of repetitive pulses, and can withstand more than 10⁶ short circuits. Relays generate some noise when they engage, while high-side switches are silent during operation. High-side switches operate quickly; the classic operating time of a relay is 10 ms, while the operating time of a high-side switch is only 100 μs. In the presence of electric arcs, the contacts of relay switches can dissolve or even stick together, limiting their performance under high switching frequencies and highly inductive loads. High-side switches can prevent this by utilizing their energy handling capabilities. High-side switches support low-speed pulse width modulation, enabling intelligent power management, controlling load current, and meeting the power requirements and potential limitations of existing loads.

[0297] The switch acquisition module is responsible for acquiring physical switch signals, filtering the signals, performing switch logic checks, diagnosing faults, and outputting switch logic signals and fault status. The module has switch acquisition capabilities, handles switch signal anomalies and errors, and outputs switch fault status. It then sends the processed signals to the MCU detection and control unit for unified processing.

[0298] The CAN communication output module is responsible for managing the status of the system's CAN bus, communicating with the gateway, enabling signal interaction between each intelligent power distribution controller and the vehicle network, and also sending sleep / wake commands.

[0299] The intelligent power distribution system consists of five parts: a battery, a DC / DC converter, a rear intelligent power distribution controller, a front intelligent power distribution controller, and a cab intelligent power distribution controller. The battery and DC / DC converter are connected to the rear intelligent power distribution controller. The DC / DC converter converts high voltage to low voltage to power the battery and the vehicle's low-voltage system. The battery powers the vehicle's low-voltage system. The rear intelligent power distribution controller has a power protection module to control the connection and disconnection between the DC / DC converter and the battery, between the DC / DC converter and the low-voltage power distribution system, and between the battery and the low-voltage power distribution system. The rear intelligent power distribution controller connects to and powers the front intelligent power distribution controller. The front intelligent power distribution controller connects to and powers the cab intelligent power distribution controller. The rear, front, and cab intelligent power distribution controllers are connected via a CAN bus for signal exchange.

[0300] The functions of the three intelligent power distribution controllers are as follows: The cab intelligent power distribution controller is responsible for powering and protecting all loads in the cab, and collecting driver intentions and vehicle status, specifically including but not limited to ignition switch signals, light switch signals, wiper system signals, horn control signals, power take-off control signals, brake pedal signals, differential lock control signals, and door open status signals, etc., which are related to cab comfort functions. The front chassis intelligent power distribution controller is responsible for powering and protecting all loads at the front of the chassis, and collecting vehicle status at the front of the chassis, specifically including but not limited to front chassis switch signals, front chassis light status, etc., which are related to chassis comfort functions. The rear chassis intelligent power distribution controller is responsible for powering and protecting all loads at the rear of the chassis, and collecting vehicle status at the rear of the chassis, specifically including but not limited to rear chassis switch signals, rear chassis light status, and trailer status signals, etc., which are related to chassis comfort functions.

[0301] The battery, DC / DC converter, rear intelligent power distribution controller, and front intelligent power distribution controller are located on the chassis, while the cab intelligent power distribution controller is located in the cab.

[0302] In another specific embodiment, when the DC / DC output voltage is higher than 32V, the MCU performs a logic judgment, and the power protection module cuts off the output of the DC / DC input terminal 21 (equivalent to the first switching module). The low-voltage battery input terminal 22 (equivalent to the second switching module) and the DC / DC and low-voltage battery charging terminal 23 (equivalent to the third switching module) remain connected. After the power protection module cuts off the DC / DC input terminal 21, it avoids high-voltage impact damage to the components inside the intelligent power distribution controller caused by abnormal high voltage output of the DC / DC, and also avoids high-voltage impact damage to the external wiring harness and external controller. At the same time, the low-voltage battery input terminal 22 remains connected, which ensures that the battery output terminal 52 (equivalent to the backup power supply circuit) in the power output module is energized; the low-voltage battery input terminal 22 and the DC / DC and low-voltage battery charging terminal 23 remain connected, which ensures that the DC / DC output terminal 51 (equivalent to the main power supply circuit) in the power output module is energized. This method ensures normal power supply under abnormal input conditions while preventing damage to the internal components of the intelligent power distribution controller, low-voltage batteries, external wiring harnesses, and the controller from high-voltage surges.

[0303] In another specific embodiment, based on the above embodiment, the DC / DC power input terminal 21 is cut off, the low-voltage battery power input terminal 22 and the DC / DC and low-voltage battery charging terminal 23 are connected, and the entire vehicle consumes all the power from the low-voltage battery. Since the low-voltage battery has limited power and cannot support long-term operation under full load, when the battery SOC is lower than 50% and an alarm is issued, the low-voltage battery charging terminal 23 is cut off, and the low-voltage battery only supplies power to the battery output terminal 52. The battery output terminal 52 corresponds to load 1, load 2, load 3, load 4, load 6, load 8, etc. (load 1, load 2, load 3, load 4 are equivalent to the first load module, load 5, load 7 are equivalent to the third load module, and load 6, load 8 are equivalent to the fourth load module). Optionally, the corresponding loads are strongly related to vehicle functional safety, "limp home" and other related loads, such as vehicle controller, steering controller, steering motor, gateway, autonomous driving camera, autonomous driving controller, etc. This solution is applicable when the vehicle can only be powered by a low-voltage battery and the battery power is insufficient. By disconnecting the DC / DC converter from the low-voltage battery charging terminal 23, the limited battery power can be supplied to critical loads to ensure driving safety.

[0304] The power output module divides the power processed by the power protection module into multiple load circuits. Each circuit is protected by a high-side switch, and each high-side switch is connected to the MCU monitoring and control unit. The high-side switches operate independently, monitoring the current and voltage information of the circuit and feeding it back to the MCU in real time. Based on the received switch data, CAN signal information, and high-side switch voltage and current information, the MCU uses logic to control the on / off strategy of the high-side switches. Simultaneously, the MCU presets the time-current curve for each high-side switch, controlling the upper limit of the output current in real time to prevent excessive output current from causing smoke generation in the external wiring harness.

[0305] The loads are divided into 6 categories: constant power, ACC power, ON power, ST power, and controlled power. Constant power is the power that is always available; ACC power is the power output when the ignition switch is in the ACC position; ON power is the power output when the ignition switch is in the ON position; ST power is the power output when the ignition switch is in the ST position; and controlled power is the rest of the power that requires logical judgment, and the control strategy is not uniform.

[0306] The functions and relationships between the various intelligent power distribution controllers are as follows:

[0307] The intelligent power distribution controller in the cab is used to collect signals related to the driver's intentions and vehicle status, and to supply power to the electrical equipment located in the cab. Specifically, the intelligent power distribution controller collects signals from: ignition switch, light switch, wiper system, horn control, power take-off control, brake pedal, differential lock, door open / close, and rearview mirror adjustment. The constant power output from the intelligent power distribution controller is used for the following devices: power sockets, cigarette lighter, instrument cluster, in-vehicle screen, video image processor, combination switches, interior lights, blind spot mirrors, map lights, and vehicle controller. The ACC power output from the intelligent power distribution controller is used for the following devices: air conditioning, vehicle controller, in-vehicle screen, video image processor, and blind spot mirrors. The ON power output from the intelligent power distribution controller is used for the following devices: windshield defrost, vehicle controller, and instrument cluster. Controlled loads include: cab interior lights, panel backlights, and rearview mirror adjustment motors.

[0308] The intelligent power distribution controller at the front of the chassis is used to collect vehicle status data and supply power to electrical equipment located at the front of the chassis. Specifically, the controller collects signals such as the wear status of the front wheel pads and the status of the front chassis lights. The constant power output from the controller is used for the following devices: front wheel steering, front multi-function controller, front drive motor control unit, front parking controller, transmission control unit, and battery management unit. The ON power output from the controller is used for the following devices: front multi-function controller, front drive motor, front parking controller, battery management unit, and lubrication pump. Controlled loads include: electric horn, windshield wiper motor, front cab lights, and front cab solenoid valves.

[0309] The rear intelligent power distribution controller is used to collect vehicle status data and supply power to electrical equipment located behind the chassis. Specifically, it collects signals such as rear wheel shoe wear status and rear lighting status. The constant power output from the rear intelligent power distribution controller is used for the following devices: rear wheel steering, rear multi-function controller, rear drive motor control unit, rear parking controller, engine control unit, and fuel pre-filter heater. The ON-position power output from the rear intelligent power distribution controller is used for the following devices: rear multi-function controller, rear drive motor, rear parking controller, and 15-pin trailer power socket. Controlled loads include: rear lights, air heaters, and thermal management loads.

[0310] The rear intelligent power distribution controller is powered by a low-voltage battery and a DC / DC converter, the front intelligent power distribution controller is powered by the rear intelligent power distribution controller, and the cab intelligent power distribution controller is powered by the front intelligent power distribution controller. The cab intelligent power distribution controller, the front intelligent power distribution controller, and the rear intelligent power distribution controller are connected via a CAN bus and can exchange information with each other through the CAN bus.

[0311] Figure 10 A block diagram of an electronic device structure for a vehicle power system control method provided in one or more embodiments of the present invention.

[0312] like Figure 10 As shown, this application provides an electronic device, including: a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus;

[0313] The memory stores a computer program that, when executed by a processor, causes the processor to perform steps of a vehicle power supply system setting method, a vehicle power supply system control method, and / or a vehicle power supply system detection method.

[0314] This application also provides a computer-readable storage medium storing a computer program executable by an electronic device, which, when run on the electronic device, causes the electronic device to perform steps of a vehicle power supply system setting method, steps of a vehicle power supply system control method, and / or steps of a vehicle power supply system detection method.

[0315] This application also provides a vehicle, including:

[0316] Electronic equipment for implementing the steps of a vehicle power supply system setting method, a vehicle power supply system control method, and / or a vehicle power supply system detection method;

[0317] The processor runs a program that, when running, executes steps of a vehicle power supply system setting method, a vehicle power supply system control method, and / or a vehicle power supply system detection method from data output by the electronic device.

[0318] A storage medium for storing a program that, when running, executes steps of a vehicle power supply system setting method, a vehicle power supply system control method, and / or a vehicle power supply system detection method based on data output from an electronic device.

[0319] As can be seen from the above description of the embodiments, those skilled in the art can clearly understand that this application can be implemented by means of software plus necessary general-purpose hardware platforms. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in various embodiments or some parts of the embodiments of this application.

[0320] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A power supply system for a vehicle, characterized by comprising: The vehicle power supply system comprises: a power module, a switch module and a load module; the power module comprises a DC / DC module and a battery module; the switch module comprises a first switch module, a second switch module and a third switch module; the load module comprises a first load module, a second load module, a third load module and a fourth load module; the power module is connected to the load module through the switch module; wherein, according to the state of the DC / DC module charging the battery module, the battery module generates the second load module; wherein, the DC / DC module supplies power to the first load module, the third load module and the fourth load module, or charges the battery module; when the battery module is charging, it serves as the second load module powered by the DC / DC module; wherein, the switch module further comprises a fourth switch module; the fourth switch module comprises a normally open point, a normally closed point and a common point; the common point is located in the third or fourth load module, the normally open point or the normally closed point is located in the standby power supply circuit and the main power supply circuit of the first load module, respectively; wherein, the first switch module is provided with a main power supply circuit and a standby power supply circuit; the discharge circuit of the DC / DC module is connected to the main power supply circuit of the first load module and the power supply circuit of the third load module through the first switch module; the discharge circuit of the DC / DC module is connected to the standby power supply circuit of the first load module and the power supply circuit of the fourth load module through the series connection circuit of the first switch module and the third switch module; the discharge circuit of the DC / DC module is connected to the charging and discharging circuit of the battery module through the series connection circuit of the first switch module, the third switch module and the second switch module; wherein, according to the state that the first switch module, the third switch module and the second switch module are in the on state, the DC / DC module charges the battery module, the battery module generates the second load module; wherein, based on the vehicle safety redundancy preset requirement, the first load module is provided with one more set of standby power supply circuit than the fourth load module or the third load module; the battery module serves as the second load module in the charging mode, and the charging and discharging circuit serves as the power supply circuit.

2. A vehicle power supply system setting method characterized by comprising: Based on the vehicle power supply system as claimed in claim 1, the vehicle power supply system setting method is realized, comprising: obtaining vehicle running mode information; the vehicle running mode information comprises first running mode information, second running mode information and third running mode information; the first running mode information comprises controlling the vehicle to run safely according to the state that the DC / DC module is normal and the battery module is normal; the second running mode information comprises controlling the vehicle to stop by the roadside according to the state that the DC / DC module is abnormal and the battery module is normal; the third running mode information comprises controlling the vehicle to run at a limited speed according to the state that the DC / DC module is normal and the battery module is abnormal; further comprising: classifying vehicle loads according to vehicle running mode information; the vehicle load classification comprises that the vehicle load is divided into the first load module, the second load module, the third load module and the fourth load module; wherein, the first load module comprises a main power supply circuit and a standby power supply circuit; The third load module and the fourth load module comprise a power supply circuit; The second load module comprises a second load module generated by the battery module according to a battery module charging state; The vehicle load classification further comprises: In the second operation mode, the charging and discharging circuit of the battery module connects the standby power supply circuit of the first load module and the power supply circuit of the third load module, and disconnects the discharging circuit of the DC / DC module from the vehicle load; In the third operation mode, the discharging circuit of the DC / DC module connects the main power supply circuit of the first load module and the power supply circuit of the fourth load module, and disconnects the charging and discharging circuit of the battery module from the vehicle load; In the first operation mode, the discharging circuit of the DC / DC module or / and the charging and discharging circuit of the battery module connects the power supply circuits of the first load module, the third load module and the fourth load module.

3. A vehicle power supply system control method characterized by, Based on the vehicle power supply system as claimed in claim 1, the vehicle power supply system control method is implemented, comprising: obtaining vehicle state information; The vehicle state information comprises state information of the power supply module; The state information of the power supply module comprises health state information of the battery module or the DC / DC module; If the DC / DC module is normal and the battery module is normal, the vehicle is controlled to operate in the first operation mode; If the DC / DC module is abnormal and the battery module is normal, the vehicle is controlled to operate in the second operation mode; If the DC / DC module is normal and the battery module is abnormal, the vehicle is controlled to operate in the third operation mode; The vehicle state information further comprises state information of the load module: detecting whether the voltage state of the power supply circuit of the first load module, the second load module, the third load module or / and the fourth load module is normal; If the voltage state of the power supply circuit of the first load module, the second load module, the third load module or / and the fourth load module is normal, the vehicle is allowed to operate in the first operation mode. Based on the vehicle power supply system as claimed in claim 1, the vehicle power supply system detection method is implemented, comprising, 4. A vehicle power supply system detection method characterized by comprising: obtaining information of the vehicle operation mode; controlling the on-off state of the switch module according to the current vehicle operation mode; According to the on-off state of the switch module, the voltage state information of the power supply circuit of the first load module, the third load module or / and the fourth load module is collected; According to the on-off state of the switch module and the corresponding state of the power supply circuit voltage state, the health state of the vehicle power supply system is detected; ​ ​ The health state of the vehicle power supply system is detected according to the corresponding state of the on-off state of the switch module and the voltage state of the power supply circuit, and the detection method comprises the following steps: When the vehicle is running in the second operation mode, the first switch module is open and the second switch module and the third switch module are closed; The third switch module is periodically opened, and the voltage states of the main power supply circuit of the first load module and the power supply circuit of the third load module are collected respectively according to the periodic state of the opening of the third switch module; When the third switch module is in the open state, it is judged whether the voltage states of the main power supply circuit of the first load module and the power supply circuit of the third load module are both zero; If yes, when the third switch module returns to the closed state, it is judged whether the voltage states of the main power supply circuit of the first load module and the power supply circuit of the third load module return to normal voltage values respectively; If yes, data that the vehicle power supply system supplies normally in the third operation mode of the vehicle is outputted; The state of the vehicle power supply system is detected according to the corresponding state of the on-off state of the switch module and the voltage state of the power supply circuit, and the detection method further comprises the following steps: When the vehicle is running in the third operation mode, the second switch module is open and the first switch module and the third switch module are closed; The third switch module is periodically opened, and the voltage states of the standby power supply circuit of the first load module and the power supply circuit of the fourth load module are collected respectively according to the periodic state of the opening of the third switch module; When the third switch module is in the open state, it is judged whether the voltage states of the standby power supply circuit of the first load module and the power supply circuit of the fourth load module are both zero; If yes, when the third switch module returns to the closed state, it is judged whether the voltage states of the standby power supply circuit of the first load module and the power supply circuit of the fourth load module return to normal voltage values respectively; If yes, data that the vehicle power supply system supplies normally in the second operation mode of the vehicle is outputted; The state of the vehicle power supply system is detected according to the corresponding state of the on-off state of the switch module and the voltage state of the power supply circuit, and the detection method further comprises the following steps: When the vehicle is running in the first operation mode, the second switch module, the second switch module and the third switch module are closed; The third switch module and the first switch module are synchronously periodically opened, and the voltage states of the main power supply circuit of the first load module and the power supply circuit of the third load module are collected respectively according to the periodic state of the synchronous opening of the third switch module and the first switch module; When the third switch module and the first switch module are in the synchronous open state, it is judged whether the voltage states of the main power supply circuit of the first load module and the power supply circuit of the third load module are both zero; If yes, when the third switch module and the first switch module return to the synchronous closed state, it is judged whether the voltage states of the main power supply circuit of the first load module and the power supply circuit of the third load module return to normal voltage values respectively; If yes, the third switch module and the second switch module are synchronously periodically opened, and the voltage states of the standby power supply circuit of the first load module and the power supply circuit of the fourth load module are collected respectively according to the periodic state of the synchronous opening of the third switch module and the second switch module; If yes, the third switch module and the second switch module are synchronously restored to the closed state, and whether the voltage states of the backup power supply circuit of the first load module and the power supply circuit of the fourth load module are both restored to normal voltage values is determined. If yes, data that the vehicle power supply system supplies power normally in the first running mode of the vehicle is output. The method further comprises: acquiring information of a current running mode of the vehicle; If the vehicle is in the first running mode, monitoring state information of the power supply module, including state information that the DC / DC module is abnormal and the battery module is normal; According to the state information that the DC / DC module is abnormal and the battery module is normal, switching the vehicle to the second running mode; capturing vehicle zero-speed state information; According to the captured vehicle zero-speed state, starting vehicle power supply system power supply self-detection corresponding to the second running mode of the vehicle; If the detection is successful, generating a self-detection report and capturing information of vehicle maintenance records; If the record information that the vehicle maintenance is completed is captured, starting vehicle power supply system power supply self-detection corresponding to the first running mode of the vehicle; If the detection is successful, outputting state information that the DC / DC module and the battery module are normal, and switching to the first running mode. Based on the vehicle power supply system as claimed in claim 1, the vehicle power supply system setting device comprises:

5. A vehicle power supply system setting device characterized by comprising: a mode information module for acquiring vehicle running mode information; The vehicle running mode information comprises first running mode information, second running mode information and third running mode information; The first running mode information comprises controlling the vehicle to safely drive according to the state that the DC / DC module is normal and the battery module is normal; The second running mode information comprises controlling the vehicle to stop on the roadside according to the state that the DC / DC module is abnormal and the battery module is normal; The third running mode information comprises controlling the vehicle to drive at a limited speed according to the state that the DC / DC module is normal and the battery module is abnormal; Further comprising: classifying vehicle loads according to the vehicle running mode information; The vehicle load classification comprises that the vehicle loads are classified into a first load module, a second load module, a third load module and a fourth load module; The first load module comprises a main power supply circuit and a backup power supply circuit; The third load module and the fourth load module comprise a power supply circuit; The second load module comprises that the battery module generates the second load module according to a charging state of the battery module; The vehicle load classification further comprises: In the second running mode, the charging and discharging circuit of the battery module is connected to the backup power supply circuit of the first load module and the power supply circuit of the third load module, and the discharging circuit of the DC / DC module is disconnected from the vehicle load; In the third running mode, the discharging circuit of the DC / DC module is connected to the main power supply circuit of the first load module and the power supply circuit of the fourth load module, and the charging and discharging circuit of the battery module is disconnected from the vehicle load. ​ In the first operation mode, the discharge circuit of the DC / DC module and / or the charge / discharge circuit of the battery module are connected to the power supply circuits of the first, third and fourth load modules.

6. A vehicle power supply system control device characterized by comprising: The vehicle power supply system control device comprises: a vehicle state module for obtaining vehicle state information; the vehicle state information comprises state information of the power supply modules; the state information of the power supply modules comprises health state information of the battery module or the DC / DC module; if the DC / DC module is normal and the battery module is normal, the vehicle is controlled to operate in the first operation mode; if the DC / DC module is abnormal and the battery module is normal, the vehicle is controlled to operate in the second operation mode; if the DC / DC module is normal and the battery module is abnormal, the vehicle is controlled to operate in the third operation mode; wherein the vehicle state information further comprises state information of the load modules: detecting whether the voltage states of the power supply circuits of the first, second, third and fourth load modules are normal; if the voltage states of the power supply circuits of the first and third load modules connected by the charge / discharge circuit of the battery module are normal, and the connection between the discharge circuit of the DC / DC module and the vehicle load is disconnected, the vehicle is allowed to operate in the second operation mode; if the voltage states of the power supply circuits of the first and fourth load modules connected by the discharge circuit of the DC / DC module are normal, and the connection between the charge / discharge circuit of the battery module and the vehicle load is disconnected, the vehicle is allowed to operate in the third operation mode; if the voltage states of the power supply circuits of the first, second, third and fourth load modules connected by the discharge circuit of the DC / DC module are normal, the vehicle is allowed to operate in the first operation mode.

7. A vehicle power supply system detection device characterized by comprising: The vehicle power supply system detection device comprises: a vehicle operation module for obtaining information of the vehicle operation mode; a switch control module for controlling the on-off state of the switch module according to the current vehicle operation mode; a circuit voltage module for collecting voltage state information of the power supply circuits of the first, third and fourth load modules according to the on-off state of the switch module; a system detection module for detecting the health state of the vehicle power supply system according to the corresponding state of the on-off state of the switch module and the voltage state of the power supply circuit; wherein detecting the health state of the vehicle power supply system according to the corresponding state of the on-off state of the switch module and the voltage state of the power supply circuit comprises: in the second operation mode, the first switch module is disconnected, and the second and third switch modules are closed; controlling the third switch module to be periodically disconnected, and collecting the voltage states of the main power supply circuit of the first load module and the power supply circuit of the third load module corresponding to the periodic state of the disconnection of the third switch module; judging whether the voltage states of the main power supply circuit of the first load module and the power supply circuit of the third load module are both zero when the third switch module is disconnected. If yes, then when the third switch module resumes the closed state, it is judged whether the voltage states of the main power supply circuit of the first load module and the power supply circuit of the third load module both resume normal voltage values. If yes, then data that the vehicle power supply system supplies normally in the third running mode of the vehicle is output. The detecting the state of the vehicle power supply system according to the corresponding state of the on-off state of the switch module and the voltage state of the power supply circuit further comprises: When the vehicle runs in the third running mode, the second switch module is open and the first switch module and the third switch module are closed. The third switch module is periodically opened, and the voltage states of the standby power supply circuit of the first load module and the power supply circuit of the fourth load module are collected respectively according to the periodic state that the third switch module is opened. When the third switch module is in the open state, it is judged whether the voltage states of the standby power supply circuit of the first load module and the power supply circuit of the fourth load module both are zero. If yes, then when the third switch module resumes the closed state, it is judged whether the voltage states of the standby power supply circuit of the first load module and the power supply circuit of the fourth load module both resume normal voltage values. If yes, then data that the vehicle power supply system supplies normally in the second running mode of the vehicle is output. The detecting the state of the vehicle power supply system according to the corresponding state of the on-off state of the switch module and the voltage state of the power supply circuit further comprises: When the vehicle runs in the first running mode, the second switch module, the second switch module and the third switch module are closed. The third switch module and the first switch module are synchronously periodically opened, and the voltage states of the main power supply circuit of the first load module and the power supply circuit of the third load module are collected respectively according to the periodic state that the third switch module and the first switch module are synchronously opened. When the third switch module and the first switch module are synchronously in the open state, it is judged whether the voltage states of the main power supply circuit of the first load module and the power supply circuit of the third load module both are zero. If yes, then when the third switch module and the first switch module synchronously resume the closed state, it is judged whether the voltage states of the main power supply circuit of the first load module and the power supply circuit of the third load module both resume normal voltage values. If yes, then the third switch module and the second switch module are synchronously periodically opened, and the voltage states of the standby power supply circuit of the first load module and the power supply circuit of the fourth load module are collected respectively according to the periodic state that the third switch module and the second switch module are synchronously opened. When the third switch module and the second switch module are synchronously in the open state, it is judged whether the voltage states of the standby power supply circuit of the first load module and the power supply circuit of the fourth load module both are zero. If yes, then when the third switch module and the second switch module synchronously resume the closed state, it is judged whether the voltage states of the standby power supply circuit of the first load module and the power supply circuit of the fourth load module both resume normal voltage values. If yes, then data that the vehicle power supply system supplies normally in the first running mode of the vehicle is output. The method further comprises: Obtaining information of the current running mode of the vehicle. If the vehicle is currently in the first operation mode, the state information of the power supply module is monitored, including the state information that the DC / DC module is abnormal and the battery module is normal; According to the state information that the DC / DC module is abnormal and the battery module is normal, the vehicle switches to the second operation mode; The zero-speed state information of the vehicle is captured; According to the captured zero-speed state information of the vehicle, the vehicle starts the power supply self-detection of the vehicle power supply system corresponding to the second operation mode; If the detection is successful, a self-detection report is generated and the information of the vehicle maintenance record is captured; If the record information of the vehicle maintenance is captured, the vehicle starts the power supply self-detection of the vehicle power supply system corresponding to the first operation mode; If the detection is successful, the state information that the DC / DC module and the battery module are normal is output, and the vehicle switches to the first operation mode.

8. An electronic device, comprising: Comprise: a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory complete mutual communication through the communication bus; The memory stores a computer program, and when the computer program is executed by the processor, the processor executes the steps of the vehicle power supply system setting method of claim 2, the steps of the vehicle power supply system control method of claim 3 or / and the steps of the vehicle power supply system detection method of claim 4.

9. A computer-readable storage medium, characterized in that, The memory stores a computer program executable by the electronic device, and when the computer program runs on the electronic device, the electronic device executes the steps of the vehicle power supply system setting method of claim 2, the steps of the vehicle power supply system control method of claim 3 or / and the steps of the vehicle power supply system detection method of claim 4.

10. A vehicle characterized by comprising: Comprise: an electronic device for implementing the steps of the vehicle power supply system setting method of claim 2, the steps of the vehicle power supply system control method of claim 3 or / and the steps of the vehicle power supply system detection method of claim 4; a processor, the processor running a program, and when the program runs, the data output from the electronic device executes the steps of the vehicle power supply system setting method of claim 2, the steps of the vehicle power supply system control method of claim 3 or / and the steps of the vehicle power supply system detection method of claim 4; a storage medium for storing a program, and when the program runs, the data output from the electronic device executes the steps of the vehicle power supply system setting method of claim 2, the steps of the vehicle power supply system control method of claim 3 or / and the steps of the vehicle power supply system detection method of claim 4.

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