Vehicle power distribution system, vehicle power distribution control method, storage medium and vehicle

Abstract

The invention relates to a vehicle power distribution system, a vehicle power distribution control method, a storage medium and a vehicle. The vehicle power distribution system is applied to the field of vehicle manufacturing and comprises a storage battery module, a direct current-direct current converter and an electronic fuse module, the electronic fuse module comprises a first type of fuses and a second type of fuses; the load comprises a first type of load and a second type of load. When load protection is carried out through the electronic fuses, a classified protection strategy is adopted, that is, the first type of fuses protect the first type of loads, the second type of fuses protect the second type of fuses, and the connection states of the electronic fuses connected with all the loads are regulated and controlled through a microcontroller according to the power supply currents of all the loads. And the fuse is not interrupted and triggered only through current, so that the conduction control flexibility of a load circuit and the protection efficiency of the electronic fuse on the load are improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of vehicle manufacturing, and in particular, to a vehicle power distribution system, a vehicle power distribution control method, a storage medium, and a vehicle. Background Art

[0002] The power distribution system of a vehicle is the core part of the vehicle's electrical architecture, responsible for the distribution, protection, and control of electrical energy to ensure the safe and stable operation of various electrical devices on the vehicle. However, when the power distribution system is performing load power distribution, power supply failures sometimes occur, which can interfere with the normal operation of the vehicle. Summary of the Invention

[0003] In view of this, embodiments of the present disclosure are expected to provide a vehicle power distribution system, a vehicle power distribution control method, a storage medium, and a vehicle.

[0004] The technical solution of the present disclosure is implemented as follows:

[0005] In a first aspect, the present disclosure provides a vehicle power distribution system.

[0006] The vehicle power distribution system provided by the embodiments of the present disclosure includes:

[0007] A battery module for providing DC power supply to the loads of the vehicle power distribution system;

[0008] A DC-DC converter connected to the battery module for converting the output current of the battery module and outputting the supply current required by the load;

[0009] An electronic fuse module connected between the DC-DC converter and the load for protecting the circuit of the load; wherein, the electronic fuse module includes a first type of fuse and a second type of fuse; the load includes a first type of load and a second type of load; the first type of fuse is connected between the DC-DC converter and the first type of load, and the second type of fuse is connected between the DC-DC converter and the second type of load; wherein, the first type of load is a load with a supply current less than a predetermined current value, and the second type of load is a load with a supply current greater than or equal to the predetermined current value;

[0010] A microcontroller connected to each fuse in the electronic fuse module for regulating the connection state of the electronic fuse connected to each load according to the supply current of each load; wherein, the connection state of the electronic fuse includes conduction or interruption.

[0011] In some embodiments, the first type of fuse includes an HSD high-side drive chip, and the second type of fuse includes a MOSFET field-effect transistor.

[0012] In some embodiments, when the electronic fuse is an HSD high-end drive chip and the load is a capacitive load, the microcontroller is configured to generate a PWM waveform based on pre-charge parameters when the capacitive load starts, and control the HSD high-end drive chip to generate n interruptions within a predetermined time, so that the capacitive load is gradually charged with a supply current lower than the first current.

[0013] In some embodiments, the microcontroller is specifically configured to monitor the supply current of each load. If the current supply current of the target load is greater than the load over-current value, and the duration for which the current supply current is greater than the load over-current value is greater than the load over-current time, then control the electronic fuse of the target load to be in an interrupted state; or,

[0014] If the current supply current of the target load is greater than the wire harness over-current value, and the duration for which the current supply current is greater than the wire harness over-current value is greater than the wire harness over-current time, then control the electronic fuse of the target load to be in an interrupted state.

[0015] In some embodiments, the microcontroller is specifically configured to detect the power supply state of the circuit when the target load is powered on. If the power supply state of the circuit when the target load is powered on is faulty, then control the electronic fuse of the target load to be in an interrupted state; wherein, the power supply state of the circuit when the target load is powered on being faulty includes an over-current fault, a short circuit to the power supply fault, and an open circuit fault occurring in the power supply state of the circuit when the target load is powered on.

[0016] In a second aspect, the present disclosure provides a vehicle power distribution control method, which is applied to a vehicle power distribution system. The vehicle power distribution system includes a battery module, a DC-DC converter, and an electronic fuse module; wherein, the battery module is connected to the DC-DC converter; the electronic fuse module is connected between the DC-DC converter and the load; wherein, the electronic fuse module includes a first type of fuse and a second type of fuse; the load includes a first type of load and a second type of load; the first type of fuse is connected between the DC-DC converter and the first type of load, and the second type of fuse is connected between the DC-DC converter and the second type of load; wherein, the first type of load is a load with a supply current less than a predetermined current value, and the second type of load is a load with a supply current greater than or equal to the predetermined current value; a microcontroller is connected to each fuse in the electronic fuse module;

[0017] The method includes:

[0018] Monitoring the supply current of each load through the microcontroller;

[0019] Based on the supply current of each load, regulating the connection state of the electronic fuse connected to each load.

[0020] In some embodiments, regulating the connection states of the electronic fuses connected to each load based on the power supply current of each load includes:

[0021] Determining the power supply state of the circuit when the target load is powered on based on the power supply current of the target load;

[0022] If the power supply state of the circuit when the target load is powered on is a fault, controlling the electronic fuse of the target load to be in an interrupted state; wherein, the power supply state of the circuit when the target load is powered on being a fault includes an overcurrent fault, a short circuit to the power supply fault, and an open circuit fault occurring in the power supply state of the circuit when the target load is powered on.

[0023] In some embodiments, the first type of fuse includes an HSD high-side driver chip, and the second type of fuse includes a MOSFET field-effect transistor;

[0024] If the electronic fuse is an HSD high-side driver chip and the load is a capacitive load, the regulating the connection states of the electronic fuses connected to each load based on the power supply current of each load includes:

[0025] When the capacitive load starts up, generating a PWM waveform by a microcontroller based on pre-charge parameters to control the HSD high-side driver chip to generate n interruptions within a predetermined time, so that the capacitive load is gradually charged with a power supply current lower than a first current.

[0026] In a third aspect, the present disclosure provides a computer-readable storage medium, on which a vehicle power distribution control program is stored. When the vehicle power distribution control program is executed by a processor, the vehicle power distribution control method described in the second aspect above is implemented.

[0027] In a fourth aspect, the present disclosure provides a vehicle, including the vehicle power distribution system described in the first aspect above.

[0028] A vehicle power distribution system according to an embodiment of the present disclosure includes: a battery module for supplying direct current to loads of the vehicle power distribution system; a DC-DC converter connected to the battery module for converting the output current of the battery module and outputting a supply current required by the loads; an electronic fuse module connected between the DC-DC converter and the loads for protecting the load circuits; wherein, the electronic fuse module includes a first type of fuse and a second type of fuse; the loads include a first type of load and a second type of load; the first type of fuse is connected between the DC-DC converter and the first type of load, and the second type of fuse is connected between the DC-DC converter and the second type of load; wherein, the first type of load is a load with a supply current less than a predetermined current value, and the second type of load is a load with a supply current greater than or equal to the predetermined current value; a microcontroller connected to each fuse in the electronic fuse module for regulating the connection state of the electronic fuse connected to each load according to the supply current of each load; wherein, the connection state of the electronic fuse includes conduction or interruption. In this application, when protecting the loads through the electronic fuses, a classification protection strategy is adopted, that is, the first type of fuse protects the first type of load, and the second type of fuse protects the second type of load. The microcontroller regulates the connection state of the electronic fuse connected to each load according to the supply current of each load. Instead of simply triggering the hardware interruption of the fuse through the current, a combination of software control and hardware triggering is used to regulate the fuse state, which is beneficial to improving the flexibility of load circuit conduction control and the protection efficiency of the electronic fuse for the load.

[0029] Additional aspects and advantages of the present disclosure will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present disclosure. Brief Description of the Drawings

[0030] Figure 1 is a schematic structural diagram of a vehicle power distribution system shown according to an exemplary embodiment;

[0031] Figure 2 is a flowchart of a vehicle power distribution control method shown according to an exemplary embodiment. Detailed Embodiments

[0032] Embodiments of the present disclosure will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present disclosure and should not be construed as limiting the present disclosure.

[0033] The vehicle's power distribution system is the core part of the vehicle's electrical architecture, responsible for the distribution, protection, and control of electrical energy to ensure the safe and stable operation of various electrical devices in the vehicle. However, during load power distribution, power supply failures sometimes occur in the power distribution system, which can interfere with the normal operation of the vehicle.

[0034] In view of the above situation, the present disclosure provides a vehicle power distribution system. Figure 1 It is a schematic structural diagram of a vehicle power distribution system shown according to an exemplary embodiment. As Figure 1 shown, the vehicle power distribution system includes:

[0035] A battery module for providing DC power to the loads of the vehicle power distribution system;

[0036] A DC-DC converter DCDC, connected to the battery module, for converting the output current of the battery module and outputting the supply current required by the load;

[0037] An electronic fuse module, connected between the DC-DC converter and the load, for protecting the load circuit; wherein, the electronic fuse module includes a first type of fuse (fuse 1 of the first type to fuse m of the first type) and a second type of fuse (fuse 1 of the second type to fuse x of the second type); the load includes a first type of load (load 1 of the first type to load m of the first type) and a second type of load (load 1 of the second type to load x of the second type); the first type of fuse is connected between the DC-DC converter and the first type of load, and the second type of fuse is connected between the DC-DC converter and the second type of load; wherein, the first type of load is a load with a supply current less than a predetermined current value, and the second type of load is a load with a supply current greater than or equal to the predetermined current value;

[0038] A microcontroller, connected to each fuse in the electronic fuse module, for regulating the connection state of the electronic fuse connected to each load according to the supply current of each load; wherein, the connection state of the electronic fuse includes conduction or interruption.

[0039] In this exemplary embodiment, each load can be any type of vehicle load, such as in-vehicle lights, audio systems, air conditioners, electric seats, airbags, multimedia devices, etc. Among them, the first type of load can include a driving recorder, in-vehicle lights, etc.; the second type of load can include a low-pressure water pump, a low-pressure oil pump, etc.

[0040] In this exemplary embodiment, the first type of fuse includes an HSD high-side driver chip, and the second type of fuse includes a MOSFET field-effect transistor. Among them, the MOSFET field-effect transistor can include PMOS, NMOS, etc. Among them, when the supply current is less than 40A and greater than 15A, the electronic fuse can use PMOS; when the supply current is greater than 40A, the electronic fuse can use NMOS; when the supply current is less than 15A, the electronic fuse can use the HSD high-side driver chip.

[0041] A vehicle power distribution system according to an embodiment of the present disclosure includes: a battery module for providing DC power to the loads of the vehicle power distribution system; a DC-DC converter connected to the battery module for converting the output current of the battery module and outputting the supply current required by the load; an electronic fuse module connected between the DC-DC converter and the load for protecting the load circuit; wherein, the electronic fuse module includes a first type of fuse and a second type of fuse; the load includes a first type of load and a second type of load; the first type of fuse is connected between the DC-DC converter and the first type of load, and the second type of fuse is connected between the DC-DC converter and the second type of load; wherein, the first type of load is a load with a supply current less than a predetermined current value, and the second type of load is a load with a supply current greater than or equal to the predetermined current value; a microcontroller connected to each fuse in the electronic fuse module for regulating the connection state of the electronic fuse connected to each load according to the supply current of each load; wherein, the connection state of the electronic fuse includes conduction or interruption. In this application, when protecting the load through the electronic fuse, a classification protection strategy is adopted, that is, the first type of fuse protects the first type of load, and the second type of fuse protects the second type of fuse, and the microcontroller regulates the connection state of the electronic fuse connected to each load according to the supply current of each load, rather than simply triggering the fuse interruption through the current, which is beneficial to improving the flexibility of load circuit conduction control and the protection efficiency of the electronic fuse for the load.

[0042] In some embodiments, if the electronic fuse is an HSD high-side driver chip and the load is a capacitive load, the microcontroller is configured to generate a PWM waveform based on pre-charge parameters when the capacitive load is started, and control the HSD high-side driver chip to generate n interruptions within a predetermined time, so that the capacitive load is gradually charged with a supply current lower than the first current.

[0043] In this exemplary embodiment, for some capacitive loads, their rated current is small, but the instantaneous starting current is very large (for example, the rated current is 5A and the starting instantaneous current is 30A). In this case, an electronic fuse can select a MOSFET with a rated current of 30A, but this will result in a relatively high hardware cost. Therefore, an HSD high-side drive chip with a rated current of 5A can be selected, and the problem of instantaneous large current can be solved by relying on the pre-charging method to reduce the cost. That is, when the capacitive load starts, based on the pre-charging parameters, the microcontroller generates a PWM waveform to control the HSD high-side drive chip to interrupt frequently within a predetermined time, so that the capacitive load is gradually charged with a supply current lower than the first current. Among them, the pre-charging parameters may include: whether to enable, PWM frequency, PWM duty cycle, and PWM duration; the pre-charging parameters are set by the host computer and sent to the MCU for storage.

[0044] If pre-charging is enabled, when the MCU is closed, it will generate a PWM waveform according to the preset pre-charging parameters to control the E-Fuse to turn on and off frequently, so that the capacitor in the capacitive load can be gradually charged. When the pre-charging ends and the E-Fuse is fully closed, no particularly large current will be generated.

[0045] In some embodiments, the microcontroller is specifically configured to monitor the supply current of each load. If the current supply current of the target load is greater than the load over-current value, and the duration for which the current supply current is greater than the load over-current value is greater than the load over-current time, then control the electronic fuse of the target load to be in an interrupted state; or,

[0046] If the current supply current of the target load is greater than the harness over-current value, and the duration for which the current supply current is greater than the harness over-current value is greater than the harness over-current time, then control the electronic fuse of the target load to be in an interrupted state.

[0047] In this exemplary embodiment, the harness over-current value is greater than or equal to the load over-current value. Among them, the harness over-current value can be determined based on the current value that the harness can carry, and the load over-current value can be determined based on the rated operating current value of the load. For example, the harness over-current value can be basically equal to or slightly greater than the current value that the harness can carry. For example, the harness over-current value = the current value that the harness can carry * n, etc., and the load over-current value = the rated operating current value of the load * n, etc.; where n can be a value greater than or equal to 1.1, such as 1.2, 1.3, etc. This is only an example and has no limiting effect.

[0048] When the current supply current of the target load is greater than the load overcurrent value, and the duration for which the current supply current is greater than the load overcurrent value is greater than the load overcurrent time, it indicates that the current supply current is too large and may damage the target load. Therefore, at this time, the electronic fuse can be interrupted to protect the target load. Similarly, when the current supply current of the target load is greater than the harness overcurrent value, and the duration for which the current supply current is greater than the harness overcurrent value is greater than the harness overcurrent time, it indicates that the current supply current is too large and may damage the power supply line of the target load. Therefore, at this time, the electronic fuse can be interrupted to protect the power supply line of the target load.

[0049] In some embodiments, the microcontroller is specifically configured to detect the power supply state of the circuit when the target load is powered on. If the power supply state of the circuit when the target load is powered on is a fault, then control the electronic fuse of the target load to be in an interrupted state; wherein, the power supply state of the circuit when the target load is powered on being a fault includes an overcurrent fault, a short circuit to power supply fault, and an open circuit fault occurring in the power supply state of the circuit when the target load is powered on.

[0050] In the present exemplary embodiment, the microcontroller can detect the power supply state of the circuit when the target load is powered on in real time. If a fault state occurs in the power supply state of the circuit when the target load is powered on, the electronic fuse of the target load can be controlled to be in an interrupted state to protect the target load. For example, when an overcurrent fault, a short circuit to power supply fault, an open circuit fault, etc. occur in the circuit when the target load is powered on, the electronic fuse of the target load can be controlled to be in an interrupted state. Among them, an overcurrent fault means that the microcontroller MCU detects that the current exceeds a preset current threshold for a period of time.

[0051] A short circuit to power supply fault means that before the microcontroller controls the electronic fuse, it first detects whether there is voltage at the load end. If there is voltage at the load end, it is considered that there is a short circuit to power supply fault in this power distribution path.

[0052] An open circuit fault means that after the microcontroller controls the electronic fuse to close, it detects whether there is voltage at the load end. If the voltage at the load end approaches 0, it is considered that there is an open circuit fault in this power distribution path.

[0053] When any of the above-mentioned faults occur, the electronic fuse is not closed. Without powering off the microcontroller, the fault is not allowed to be restored. Only after powering on again, the fault is restored and detection is carried out again.

[0054] When any of the above-mentioned faults occur, the fault occurrence time, fault name, power distribution channel number, MCU control state (closed / open), occurrence times, load voltage, and load current can be recorded. These data can be read through the diagnostic CAN or diagnosed through a remote cloud platform.

[0055] Through the above fault diagnosis, the problem can be quickly located after a fault occurs. Especially in the product verification and testing stage, using these data can speed up the verification process.

[0056] Meanwhile, if a short circuit to ground fault occurs in the target load, a very large current will be generated at this time, which will trigger the hardware protection of the electronic fuse. The electronic fuse will actively disconnect within 1 ms; the electronic fuse will generate a fault flag bit, and the microcontroller MCU can read this flag bit.

[0057] This application realizes the power distribution function through a DC-DC converter and an electronic fuse; at the same time, through the microcontroller's acquisition of the voltage and current of the electronic fuse, intelligent fault diagnosis is realized; by setting custom current parameters (harness overcurrent value, load overcurrent value), overcurrent protection for the load and harness can be achieved, and when the load changes, only by changing the parameters, the function can be quickly iterated. The pre-charge function for capacitive loads can also further reduce the solution cost.

[0058] After a fault occurs in this application, the electronic fuse will not be damaged. As long as the problem is eliminated and the power is restored, it can work normally, achieving maintenance-free operation throughout the product life cycle;

[0059] Since this application can obtain the voltage and current data of the electronic fuse, intelligent diagnosis can be carried out. Once a fault occurs, the problem can be quickly located.

[0060] The present disclosure provides a vehicle power distribution control method, which is applied to a vehicle power distribution system. The vehicle power distribution system includes a battery module, a DC-DC converter, and an electronic fuse module; wherein, the battery module is connected to the DC-DC converter; the electronic fuse module is connected between the DC-DC converter and the load; wherein, the electronic fuse module includes a first type of fuse and a second type of fuse; the load includes a first type of load and a second type of load; the first type of fuse is connected between the DC-DC converter and the first type of load, and the second type of fuse is connected between the DC-DC converter and the second type of load; wherein, the first type of load is a load with a supply current less than a predetermined current value, and the second type of load is a load with a supply current greater than or equal to the predetermined current value; a microcontroller is connected to each fuse in the electronic fuse module; wherein, the predetermined current value can be determined according to specific circumstances, for example, any value between 10 A and 15 A.

[0061] Figure 2 is a flowchart of a vehicle power distribution control method shown according to an exemplary embodiment. As Figure 2 shown, the method includes:

[0062] Step 20: Monitor the supply current of each load through the microcontroller;

[0063] Step 21: Regulate the connection state of the electronic fuse connected to each load based on the supply current of each load.

[0064] In this exemplary embodiment, each load can be any type of vehicle load, such as in-vehicle lights, audio systems, air conditioners, electric seats, airbags, multimedia devices, etc. Among them, the first type of load can include dash cams, in-vehicle lights, etc.; the second type of load can include low-pressure water pumps, low-pressure oil pumps, etc.

[0065] In this exemplary embodiment, the first type of fuse includes an HSD high-side drive chip, and the second type of fuse includes a MOSFET field-effect transistor.

[0066] According to an embodiment of the present disclosure, a vehicle power distribution system includes: a battery module for supplying direct current to the loads of the vehicle power distribution system; a DC-DC converter connected to the battery module for converting the output current of the battery module and outputting the supply current required by the loads; an electronic fuse module connected between the DC-DC converter and the loads for protecting the circuits of the loads; wherein the electronic fuse module includes a first type of fuse and a second type of fuse; the loads include a first type of load and a second type of load; the first type of fuse is connected between the DC-DC converter and the first type of load, and the second type of fuse is connected between the DC-DC converter and the second type of load; wherein the first type of load is a load with a supply current less than a predetermined current value, and the second type of load is a load with a supply current greater than or equal to the predetermined current value; a microcontroller connected to each fuse in the electronic fuse module for regulating the connection state of the electronic fuse connected to each load according to the supply current of each load; wherein the connection state of the electronic fuse includes conduction or interruption. In this application, when protecting the loads through the electronic fuses, a classification protection strategy is adopted, that is, the first type of fuse protects the first type of load, and the second type of fuse protects the second type of fuse, and the microcontroller regulates the connection state of the electronic fuse connected to each load according to the supply current of each load, rather than simply triggering the fuse interruption through the current, which is beneficial to improving the flexibility of load circuit conduction control and the protection efficiency of the electronic fuse for the loads.

[0067] In some embodiments, the regulating the connection state of the electronic fuse connected to each load based on the supply current of each load includes:

[0068] Based on the supply current of the target load, determine the power supply state of the circuit when the target load is powered on;

[0069] If the power supply state of the circuit is faulty when the target load is powered on, control the electronic fuse of the target load to an interrupted state; wherein, the power supply state of the circuit being faulty when the target load is powered on includes overcurrent faults, short circuits to the power supply, and open circuit faults in the power supply state of the circuit when the target load is powered on.

[0070] In this exemplary embodiment, the microcontroller can detect the power supply state of the circuit in real time when the target load is powered on. If the power supply state of the circuit is in a faulty state when the target load is powered on, the electronic fuse of the target load can be controlled to an interrupted state to protect the target load. For example, when overcurrent faults, short circuits to the power supply, open circuit faults, etc. occur in the circuit when the target load is powered on, the electronic fuse of the target load can be controlled to an interrupted state. Among them, an overcurrent fault means that the microcontroller MCU detects that the current continuously exceeds a preset current threshold for a period of time.

[0071] A short circuit to the power supply fault means that before the microcontroller MCU controls the electronic fuse, it first detects whether there is voltage at the load end. If there is voltage at the load end, it is considered that there is a short circuit to the power supply fault in this power distribution circuit.

[0072] An open circuit fault means that after the microcontroller controls the electronic fuse to close, it detects whether there is voltage at the load end. If the load end voltage approaches 0, it is considered that there is an open circuit fault in this power distribution circuit.

[0073] In this application, comprehensive protection is carried out by combining software and hardware. The software (second-level protection) provides protection first, and then hardware protection (millisecond-level protection) is carried out.

[0074] When all the above-mentioned faults occur, the electronic fuse is not allowed to be closed. Without powering off the microcontroller, the faults are not allowed to be restored. Only after powering on again, the faults are restored and detection is carried out again.

[0075] When all the above-mentioned faults occur, the fault occurrence time, fault name, power distribution channel number, MCU control state (closed / open), occurrence times, load voltage, and load current can be recorded. These data can be read through the diagnostic CAN or diagnosed through a remote cloud platform.

[0076] Through the above-mentioned fault diagnosis, the problem can be quickly located after a fault occurs. Especially in the product verification and testing stage, using these data can speed up the verification speed.

[0077] In some embodiments, the first type of fuse includes an HSD high-side driver chip, and the second type of fuse includes a MOSFET field-effect transistor;

[0078] When the electronic fuse is an HSD high - end drive chip and the load is a capacitive load, regulating the connection state of the electronic fuses connected to each load based on the supply current of each load includes:

[0079] When the capacitive load starts, based on the pre - charge parameters, a PWM waveform is generated by the micro - controller to control the HSD high - end drive chip to generate n interruptions within a predetermined time, so that the capacitive load is gradually charged with a supply current lower than the first current.

[0080] In this exemplary embodiment, for some capacitive loads, their rated current is small, but the instantaneous start - up current is very large (for example, the rated current is 5A and the start - up instantaneous current is 30A). In this case, the electronic fuse can select a MOSFET with a rated current of 30A, but the hardware cost is relatively high. Therefore, a HSD high - end drive chip with a rated current of 5A can be selected, and the problem of instantaneous large current can be solved by relying on the pre - charge method to reduce the cost. That is, when the capacitive load starts, based on the pre - charge parameters, a PWM waveform is generated by the micro - controller to control the HSD high - end drive chip to interrupt frequently within a predetermined time, so that the capacitive load is gradually charged with a supply current lower than the first current. Among them, the pre - charge parameters may include: whether to enable, PWM frequency, PWM duty cycle, and PWM duration; the pre - charge parameters are set and sent to the MCU by the upper computer for storage by the MCU. Among them, the first current can be determined according to specific needs. For example, the first current can be a current value lower than the rated current, such as 4A, etc.

[0081] If pre - charge is enabled, when the MCU is closed, it will generate a PWM waveform according to the preset pre - charge parameters to control the E - Fuse to turn on and off frequently, so that the capacitance in the capacitive load can be gradually charged. When the pre - charge ends and the E - Fuse is fully closed, no particularly large current will be generated.

[0082] The present disclosure provides a computer - readable storage medium, on which a vehicle power distribution control program is stored. When the vehicle power distribution control program is executed by a processor, it implements the vehicle power distribution control method described in the above - mentioned embodiments.

[0083] The present disclosure provides a vehicle, including the vehicle power distribution system described in the above - mentioned embodiments.

[0084] It should be noted that the logic and / or steps represented in the flowchart or described in other ways herein, for example, can be considered as a definite sequence list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, apparatus or device (such as a computer-based system, a system including a processor, or other systems that can fetch instructions from the instruction execution system, apparatus or device and execute the instructions), or in combination with these instruction execution systems, apparatus or devices. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by or in combination with an instruction execution system, apparatus or device. More specific examples (a non-exhaustive list) of the computer-readable medium include the following: an electrical connection part with one or more wirings (electronic device), a portable computer disk cartridge (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium can even be paper or other suitable media on which a program can be printed, because the program can be obtained electronically, for example, by optically scanning the paper or other media, followed by editing, interpretation, or otherwise processing as appropriate, and then stored in a computer memory.

[0085] It should be understood that the various parts of the present disclosure can be implemented by hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, any one or a combination of the following techniques well known in the art can be used: discrete logic circuits having logic gate circuits for implementing logical functions on data signals, application specific integrated circuits having appropriate combinational logic gate circuits, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), etc.

[0086] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0087] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present disclosure.

[0088] In addition, the terms "first", "second", etc. used in the embodiments of the present disclosure are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated in this embodiment. Thus, the features defined with terms such as "first" and "second" in the embodiments of the present disclosure may explicitly or implicitly indicate that at least one such feature is included in this embodiment. In the description of the present disclosure, the meaning of the word "plural" is at least two or more than two, such as two, three, four, etc., unless otherwise explicitly and specifically defined in the embodiment.

[0089] In the present disclosure, unless otherwise explicitly specified or limited in the embodiments, the terms "mounted", "connected", "connected" and "fixed" and the like appearing in the embodiments should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or integrated. It can be understood that it can also be a mechanical connection, an electrical connection, etc.; of course, it can also be directly connected, or indirectly connected through an intermediate medium, or it can be the communication inside two elements, or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific implementation situations.

[0090] In the present disclosure, unless otherwise explicitly specified and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0091] Although the embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present disclosure.

Claims

1. A vehicle power distribution system, characterized in that, Comprising: A battery module for providing DC power to the loads of a vehicle power distribution system; A DC-DC converter connected to the battery module for converting the output current of the battery module and outputting the supply current required by the loads; An electronic fuse module connected between the DC-DC converter and the loads for protecting the circuits of the loads; wherein the electronic fuse module includes a first type of fuse and a second type of fuse; the loads include a first type of load and a second type of load; the first type of fuse is connected between the DC-DC converter and the first type of load, and the second type of fuse is connected between the DC-DC converter and the second type of load; wherein, the first type of load is a load with a supply current less than a predetermined current value, and the second type of load is a load with a supply current greater than or equal to the predetermined current value; A microcontroller connected to each fuse in the electronic fuse module for regulating the connection state of the electronic fuses connected to the loads according to the supply current of each load; wherein, the connection state of the electronic fuse includes conduction or interruption.

2. The vehicle power distribution system according to claim 1, wherein The first type of fuse includes an HSD high-side driver chip, and the second type of fuse includes a MOSFET field-effect transistor.

3. The vehicle power distribution system according to claim 2, characterized in that, If the electronic fuse is an HSD high-side driver chip and the load is a capacitive load, the microcontroller is used to generate a PWM waveform based on pre-charge parameters when the capacitive load starts, and control the HSD high-side driver chip to generate n interruptions within a predetermined time, so that the capacitive load is gradually charged with a supply current lower than the first current.

4. The vehicle power distribution system according to claim 1, wherein The microcontroller is specifically used to monitor the supply current of each load. If the current supply current of the target load is greater than the load over-current value and the duration of the current supply current being greater than the load over-current value is greater than the load over-current time, then control the electronic fuse of the target load to be in an interrupted state; or, If the current supply current of the target load is greater than the wire harness over-current value and the duration of the current supply current being greater than the wire harness over-current value is greater than the wire harness over-current time, then control the electronic fuse of the target load to be in an interrupted state.

5. The vehicle power distribution system according to claim 1, characterized in that, The microcontroller is specifically used to detect the power supply state of the circuit when the target load is powered on. If the power supply state of the circuit when the target load is powered on is a fault, then control the electronic fuse of the target load to be in an interrupted state; wherein, the power supply state of the circuit when the target load is powered on being a fault includes an over-current fault, a short-circuit-to-power supply fault, and an open-circuit fault when the target load is powered on.

6. A vehicle power distribution control method, characterized in that, Applied to a vehicle power distribution system, the vehicle power distribution system includes a battery module, a DC-DC converter, and an electronic fuse module; wherein, the battery module is connected to the DC-DC converter; the electronic fuse module is connected between the DC-DC converter and the load; wherein, the electronic fuse module includes a first type of fuse and a second type of fuse; the load includes a first type of load and a second type of load; the first type of fuse is connected between the DC-DC converter and the first type of load, and the second type of fuse is connected between the DC-DC converter and the second type of load; wherein, the first type of load is a load with a supply current less than a predetermined current value, and the second type of load is a load with a supply current greater than or equal to the predetermined current value; a microcontroller is connected to each fuse in the electronic fuse module; The method includes: Monitoring the supply current of each load through the microcontroller; Based on the supply current of each load, regulating the connection state of the electronic fuse connected to each load.

7. The vehicle power distribution control method according to claim 6, wherein The regulating the connection state of the electronic fuse connected to each load based on the supply current of each load includes: Based on the supply current of the target load, determining the power supply state of the circuit when the target load is powered on; If the power supply state of the circuit when the target load is powered on is a fault, controlling the electronic fuse of the target load to be in an interrupted state; wherein, the power supply state of the circuit when the target load is powered on being a fault includes an overcurrent fault, a short circuit to the power supply fault, and an open circuit fault occurring in the power supply state of the circuit when the target load is powered on.

8. The vehicle power distribution control method according to claim 6, wherein The first type of fuse includes an HSD high-side driver chip, and the second type of fuse includes a MOSFET field effect transistor; If the electronic fuse is an HSD high-side driver chip and the load is a capacitive load, the regulating the connection state of the electronic fuse connected to each load based on the supply current of each load includes: When the capacitive load starts, based on the pre-charging parameters, generating a PWM waveform through the microcontroller to control the HSD high-side driver chip to generate n interruptions within a predetermined time, so that the capacitive load is gradually charged with a supply current lower than the first current.

9. A computer-readable storage medium, characterized in that, A vehicle power distribution control program is stored thereon, and when the vehicle power distribution control program is executed by a processor, the vehicle power distribution control method according to any one of claims 6-8 is implemented.

10. A vehicle, characterized in that, Including the vehicle power distribution system according to any one of claims 1-5.

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