Vehicle-mounted power supply system having shared magnetic core, and voltage control method and electronic device

Abstract

The present disclosure relates to a vehicle-mounted power supply system having a shared magnetic core, and a voltage control method, an electronic device, a readable storage medium and a program product. The vehicle-mounted power supply system having a shared magnetic core comprises: an alternating-current port, a traction battery port, at least two low-voltage direct-current ports and a standby low-voltage direct-current port which share the same magnetic core, wherein voltages output by different low-voltage direct-current ports are different, the standby low-voltage direct-current port is configured to output at least two types of voltages, and the voltages output by the at least two low-voltage direct-current ports include the at least two types of voltages; and the alternating-current port is connected to a mains supply, the traction battery port is connected to a traction battery, and the at least two low-voltage direct-current ports and the standby low-voltage direct-current port are respectively connected to electrical devices matching voltage requirements. The implementation difficulty is relatively low and the cost is relatively low.

Description

Common core vehicle power supply system, voltage control method and electronic equipment Cross-reference

[0001] This disclosure claims priority to Chinese Patent Publication No. 202411650533.4, filed on November 19, 2024, entitled "Common Core Vehicle Power Supply System, Voltage Control Method and Electronic Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of vehicle technology, and in particular to a common-core vehicle power supply system, voltage control method, electronic equipment, readable storage medium, and program product. Background Technology

[0003] With the continuous upgrading of new energy vehicles, vehicle controllers are becoming increasingly diversified, each requiring different voltages. For example, the active suspension system in high-end hybrid vehicles requires 48V for efficient operation, while the electric ball steering system requires 24V. The current 12V low-voltage system is increasingly unable to meet the voltage requirements of various vehicle controllers, and the low voltage also affects the efficient operation of these controllers. Therefore, new energy vehicles need to add 24V and 48V low-voltage systems to the existing 12V system.

[0004] In traditional technology, a DC / DC converter for converting high voltage to 12V and a DC / DC converter for converting high voltage to 24V and 48V are added to the existing high voltage to 12V DC / DC converter.

[0005] However, the addition of new converters requires consideration of not only cost but also many other factors such as the overall vehicle layout and high-voltage topology architecture. This necessitates continuous adjustments and adaptations for the entire vehicle, which is very difficult and will increase costs. Summary of the Invention

[0006] Therefore, it is necessary to provide a common magnetic core vehicle power supply system, voltage control method, electronic device, readable storage medium, and program product that can reduce the implementation difficulty and cost in response to the above-mentioned technical problems.

[0007] In a first aspect, this disclosure provides a common-core vehicle power supply system, comprising:

[0008] The device shares the same magnetic core, including an AC port, a power battery port, at least two low-voltage DC ports, and a backup low-voltage DC port. The different low-voltage DC ports output different voltages, and the backup low-voltage DC port is configured to output at least two voltages. The voltages output by the at least two low-voltage DC ports include the at least two voltages. The AC port is connected to the mains power supply, the power battery port is connected to the power battery, and the at least two low-voltage DC ports and the backup low-voltage DC port are respectively connected to electrical equipment with voltage requirements.

[0009] In one embodiment, the AC port is a 220V AC port, the power battery port is a high-voltage direct current (HVDC) power battery port, and the at least two low-voltage DC ports include: a 12V next-generation low-voltage direct current (LVDC) port, a 48V LVDC port, and a 24V LVDC port; the backup low-voltage DC port is an LVDC port that enables switching between 12V and 24V.

[0010] Secondly, this disclosure also provides a voltage control method applied to the system described in the first aspect, the method comprising:

[0011] Received vehicle power-on command;

[0012] Based on at least one of the following: a first determination result indicating whether the vehicle has entered charging mode; a second determination result indicating whether the vehicle has entered discharging mode; and a third determination result indicating whether the vehicle is in a driving state, each port in the common magnetic core vehicle power system is controlled.

[0013] In one embodiment, controlling each port of the common-magnetic core vehicle power system based on at least one of a first determination result of whether the vehicle has entered a charging mode, a second determination result of whether the vehicle has entered a discharging mode, and a third determination result of whether the vehicle is in a driving state includes:

[0014] Determine if the vehicle has entered charging mode;

[0015] If the vehicle enters charging mode, control the energy flow from the 220V AC port to the HVDC power battery port and the 12V LVDC low-voltage DC port, and control the 48V LVDC low-voltage DC port, the 24V LVDC low-voltage DC port and the backup low-voltage DC port to shut down.

[0016] If the vehicle is not in charging mode, determine whether the vehicle has entered discharging mode;

[0017] If the vehicle enters the discharge mode, the energy flow is controlled to flow from the HVDC power battery port to the 220V AC port and the 12V LVDC low-voltage DC port, and the 48V LVDC low-voltage DC port, the 24V LVDC low-voltage DC port and the backup low-voltage DC port are controlled to be turned off.

[0018] In one embodiment, the method further includes:

[0019] If the vehicle has not entered the discharge mode, determine whether the vehicle is in motion;

[0020] If the vehicle is not in motion, control the energy flow from the HVDC power battery port to the 12V LVDC low-voltage DC port, and control the 220V AC port, the 48V LVDC low-voltage DC port, the 24V LVDC low-voltage DC port and the backup low-voltage DC port to shut down.

[0021] If the vehicle is in motion, determine whether there is electrical power input to the vehicle's high-voltage system;

[0022] If there is no power input to the vehicle's high-voltage system, the energy flow is controlled to flow from the 12V LVDC low-voltage DC port to the 24V LVDC low-voltage DC port, and the 220V AC port, the HVDC power battery port, the 48V LVDC low-voltage DC port, and the backup low-voltage DC port are controlled to shut down; and a prompt message is generated to remind the user that the vehicle has malfunctioned and to pull over.

[0023] In one embodiment, the method further includes:

[0024] If there is electrical power input to the vehicle's high-voltage system, determine whether the power of the electrical equipment connected to the 12V LVDC low-voltage DC port is greater than the power of the 12V LVDC low-voltage DC port and the power of the backup low-voltage DC port.

[0025] If so, control the energy flow from the HVDC power battery port to the 12V LVDC low-voltage DC port, the 48V LVDC low-voltage DC port, the 24V LVDC low-voltage DC port and the backup low-voltage DC port, and control the 220V AC port to shut down;

[0026] If the power of the 12V LVDC low-voltage DC port is less than or equal to the power of the backup low-voltage DC port, determine whether the efficiency of the 12V LVDC low-voltage DC port is greater than the efficiency of the backup low-voltage DC port for the electrical equipment connected to the 12V LVDC low-voltage DC port.

[0027] If the efficiency of the 12V LVDC low-voltage DC port is less than or equal to the efficiency of the backup low-voltage DC port, control the energy flow from the HVDC power battery port to the 48V LVDC low-voltage DC port, the 24V LVDC low-voltage DC port, and the backup low-voltage DC port, and control the 220V AC port and the 12V LVDC low-voltage DC port to shut down.

[0028] In one embodiment, the method further includes:

[0029] If the efficiency of the 12V LVDC low-voltage DC port is greater than the efficiency of the backup low-voltage DC port, determine whether the efficiency of the 24V LVDC low-voltage DC port is greater than the efficiency of the backup low-voltage DC port for the electrical equipment connected to the 24V LVDC low-voltage DC port.

[0030] If so, control the energy flow from the HVDC power battery port to the 12V LVDC low-voltage DC port, the 48V LVDC low-voltage DC port, and the 24V LVDC low-voltage DC port, and control the 220V AC port and the backup low-voltage DC port to shut down;

[0031] If not, control the energy flow from the HVDC power battery port to the 12V LVDC low-voltage DC port, the 48V LVDC low-voltage DC port, and the backup low-voltage DC port; and control the 220V AC port and the 24V LVDC low-voltage DC port to shut down.

[0032] Thirdly, this disclosure also provides an electronic device, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to perform the following steps:

[0033] Received vehicle power-on command;

[0034] Based on at least one of the following: a first determination result indicating whether the vehicle has entered charging mode; a second determination result indicating whether the vehicle has entered discharging mode; and a third determination result indicating whether the vehicle is in a driving state, each port in the common magnetic core vehicle power system is controlled.

[0035] Fourthly, this disclosure also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, performs the following steps:

[0036] Received vehicle power-on command;

[0037] Based on at least one of the following: a first determination result indicating whether the vehicle has entered charging mode; a second determination result indicating whether the vehicle has entered discharging mode; and a third determination result indicating whether the vehicle is in a driving state, each port in the common magnetic core vehicle power system is controlled.

[0038] Fifthly, this disclosure also provides a computer program product, including a computer program that, when executed by a processor, performs the following steps:

[0039] Received vehicle power-on command;

[0040] Based on at least one of the following: a first determination result indicating whether the vehicle has entered charging mode; a second determination result indicating whether the vehicle has entered discharging mode; and a third determination result indicating whether the vehicle is in a driving state, each port in the common magnetic core vehicle power system is controlled.

[0041] The aforementioned common-core vehicle power supply system, voltage control method, electronic equipment, readable storage medium, and program products, addressing the diverse power demands caused by the different operating voltage ranges of active suspension systems, electric ball steering systems, and other controllers in the current market, propose an intelligent, multi-voltage platform integrated output, and redundant backup central vehicle power supply system. This system includes: an AC port sharing the same magnetic core, a power battery port, at least two low-voltage DC ports, and a backup low-voltage DC port. Different low-voltage DC ports output different voltages, and the backup low-voltage DC port is configured to output at least two voltages. The voltages output by the at least two low-voltage DC ports include the at least two voltages. The AC port is connected to the mains power supply, the power battery port is connected to the power battery, and the at least two low-voltage DC ports and the backup low-voltage DC port are respectively connected to electrical equipment with matching voltage requirements. Through integrated power topology design, a common core design was achieved for the AC port, power battery port, low-voltage DC port, and backup low-voltage DC port. This enables energy transfer between ports and avoids charge exchange between high and low voltages. Since the common core design isolates the low-voltage outputs, a fault in one port will not affect the other ports, thus improving power quality and reliability. Compared with adding converters of different voltage levels, this design is less difficult to implement and less expensive. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments or related technologies of this disclosure, the accompanying drawings used in the description of the embodiments or related technologies of this disclosure will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 is a schematic diagram of the structure of a common magnetic core vehicle power supply system in one embodiment;

[0044] Figure 2 is a schematic diagram of the common magnetic core vehicle power supply system in another embodiment;

[0045] Figure 3 is a schematic diagram of the circuit structure of each port in one embodiment;

[0046] Figure 4 is a flowchart of a voltage control method in one embodiment;

[0047] Figure 5 is a flowchart of the voltage control method in another embodiment;

[0048] Figure 6 is a schematic diagram of the charging and discharging modes in one embodiment;

[0049] Figure 7 is a schematic diagram of the charging energy flow in one embodiment;

[0050] Figure 8 is a schematic diagram of the discharge energy flow in one embodiment;

[0051] Figure 9 is a schematic diagram of the parking mode in one embodiment;

[0052] Figure 10 is a schematic diagram of parking energy flow in one embodiment;

[0053] Figure 11 is a schematic diagram of the fault modes in one embodiment;

[0054] Figure 12 is a schematic diagram of the fault energy flow in one embodiment;

[0055] Figure 13 is a schematic diagram of a 12V parallel output mode in one embodiment;

[0056] Figure 14 is a schematic diagram of the 12V parallel output energy flow in one embodiment;

[0057] Figure 15 is a schematic diagram of the 12V auxiliary port output mode in one embodiment;

[0058] Figure 16 is a schematic diagram of the energy flow output from the 12V auxiliary port in one embodiment;

[0059] Figure 17 is a schematic diagram of the main driving mode in one embodiment;

[0060] Figure 18 is a schematic diagram of the energy flow of the main driving mode in one embodiment;

[0061] Figure 19 is a schematic diagram of the 24V auxiliary port output mode in one embodiment;

[0062] Figure 20 is a schematic diagram of the energy flow at the 24V auxiliary port in one embodiment.

[0063] A schematic diagram of the energy flow at the 24V auxiliary port. Detailed Implementation

[0064] To make the objectives, technical solutions, and advantages of this disclosure clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this disclosure.

[0065] This disclosure provides a common-core vehicle power supply system that can be applied in new energy vehicles. This vehicle power supply system is a central vehicle power supply system capable of outputting different voltage levels, utilizing different ports to output different voltage levels to meet the needs of electrical equipment; achieving the development goals of power supply product integration, modularization, and standardization.

[0066] In some embodiments, referring to Figure 1, the common-core vehicle power system includes: an AC port sharing the same magnetic core, a power battery port, at least two low-voltage DC ports, and a backup low-voltage DC port. The at least two low-voltage DC ports output different voltages, and the backup low-voltage DC port is configured to output at least two voltages. The voltages output by the at least two low-voltage DC ports include the at least two voltages. The AC port is connected to the mains power supply, the power battery port is connected to the power battery, and the at least two low-voltage DC ports and the backup low-voltage DC port are respectively connected to electrical equipment with voltage requirements.

[0067] The AC port, the power battery port, at least two low-voltage DC ports, and the backup low-voltage DC port share the same magnetic core.

[0068] The AC port is connected to the mains power supply. The AC port can be a 220V AC port, a 230V AC port, a 100V AC port, or a 110V AC port, etc. This disclosure does not limit the specific type of AC port.

[0069] Among them, the power battery port can be a high voltage direct current (HVDC) power battery port.

[0070] Among them, at least two low-voltage DC ports can be set according to the voltage requirements of each controller in the new energy vehicle, and the output voltage of different low-voltage DC ports is different.

[0071] For example, at least two low-voltage DC ports may include: a 12V next-generation low-voltage DC (LVDC) port, a 48V LVDC port, and a 24V LVDC port; the 12V LVDC port outputs a voltage of 12V, the 48V LVDC port outputs a voltage of 48V, and the 24V LVDC port outputs a voltage of 24V.

[0072] The backup low-voltage DC port is configured to output at least two voltages, and the voltages output by at least two low-voltage DC ports include these at least two voltages.

[0073] For example, at least two low-voltage DC ports can include: a 12V next-generation low-voltage DC (LVDC) port, a 48V LVDC port, and a 24V LVDC port; that is, the output voltages of at least two low-voltage DC ports include 12V, 24V, and 48V; then, the backup low-voltage DC port can output 12V and 24V; or, the backup low-voltage DC port can output 12V and 48V; or, the backup low-voltage DC port can output 24V and 48V, which can be flexibly set according to the actual situation.

[0074] The power battery port is connected to the power battery, and at least two low-voltage DC ports and the backup low-voltage DC port are respectively connected to the electrical equipment whose voltage requirements are matched.

[0075] For example, at least two low-voltage DC ports may include: a 12V LVDC low-voltage DC port, a 48V LVDC low-voltage DC port, and a 24V LVDC low-voltage DC port; the 12V LVDC low-voltage DC port can be connected to electrical equipment with a voltage requirement of 12V; the 48V LVDC low-voltage DC port can be connected to electrical equipment with a voltage requirement of 48V, such as an active suspension system; and the 24V LVDC low-voltage DC port can be connected to electrical equipment with a voltage requirement of 24V, such as an electric ball recirculating steering system.

[0076] For example, the backup low-voltage DC port can output 12V and 24V, and the backup low-voltage DC port can be connected to electrical equipment with a voltage requirement of 12V and electrical equipment with a voltage requirement of 24V.

[0077] In the above embodiments, considering the diverse power demands caused by the different operating voltage ranges of active suspension systems, electric ball steering systems, and other controllers in the current market, an intelligent, multi-voltage platform integrated output, and redundant backup central vehicle power supply system is proposed. This system includes: an AC port sharing the same magnetic core, a power battery port, at least two low-voltage DC ports, and a backup low-voltage DC port. Different low-voltage DC ports output different voltages, and the backup low-voltage DC port is configured to output at least two voltages. The voltages output by the at least two low-voltage DC ports include the at least two voltages. The AC port is connected to the mains power supply, the power battery port is connected to the power battery, and the at least two low-voltage DC ports and the backup low-voltage DC port are respectively connected to electrical equipment with matching voltage requirements. Through integrated power topology design, a common core design was achieved for the AC port, power battery port, low-voltage DC port, and backup low-voltage DC port. This enables energy transfer between ports and avoids charge exchange between high and low voltages. Since the common core design isolates the low-voltage outputs, a fault in one port will not affect the other ports, thus improving power quality and reliability. Compared with adding converters of different voltage levels, this design is less difficult to implement and less expensive.

[0078] In some embodiments, the AC port is a 220V AC port, the power battery port is a high-voltage direct current (HVDC) power battery port, and the at least two low-voltage DC ports include: a 12V next-generation low-voltage direct current (LVDC) port, a 48V LVDC port, and a 24V LVDC port; the backup low-voltage DC port is an LVDC port that enables switching between 12V and 24V. Referring to Figure 2, the 220V AC port is identified as port 1, the HVDC power battery port as port 2, the 12V LVDC port as port 3, the 48V LVDC port as port 4, the 24V LVDC port as port 5, and the LVDC port that enables switching between 12V and 24V as port 6.

[0079] The circuit structure of each port is shown in Figure 3. Port 1's AC-L and AC-N are connected to the live and neutral wires of the 220V AC mains input, respectively. The other end of AC-L is connected to one end of energy storage inductors L1 and L2. Power switches S1 and S2 together form the fast bridge arm of the interleaved parallel totem pole power factor correction circuit, with its midpoint connected to the other end of inductor L1. Power switches S3 and S4 together form the slow bridge arm of the interleaved parallel totem pole power factor correction circuit, with its midpoint connected to the other end of inductor L2. The drain of power switch S1 and the drain of power switch S3... The drain of the power switch S5 is connected to one end of the energy storage capacitor C1, the drain of the power switch S5, and the drain of the power switch S7. The source of the power switch S2 is connected to the source of the power switch S4, the other end of the energy storage capacitor C1, the source of the power switch S6, and the source of the power switch S8. The midpoint of the connection between the power switches S5 and S6 is connected to one end of the resonant inductor L3. The midpoint of the connection between the power switches S7 and S8 is connected to one end of the resonant capacitor C2. The other end of the resonant inductor is connected to one end of the winding N1 of the transformer T1. The other end of the resonant capacitor is connected to the other end of the winding N1 of the transformer T1.

[0080] Referring to Figure 3, HV+ of port 2 is connected to the positive terminal of the power battery (vehicle power distribution) and one end of the energy storage capacitor C4, while HV- is connected to the negative terminal of the power battery (vehicle power distribution) and the other end of the energy storage capacitor C4. Power switching transistors S13, S14, S15, and S16 form a full-bridge circuit, and the midpoint of each bridge arm is connected to both ends of the N2 winding of transformer T1.

[0081] Referring to Figure 3, 12VB+ of port 3 is connected to the positive terminal of the vehicle's low-voltage 12V and one end of solid-state relay Q10; B- of each port is connected to the vehicle body; the other end of solid-state relay Q10 is connected to the center tap of the N3 winding of transformer T1 and one end of solid-state relay Q6; the drains of power switch S21 and S23 are connected to one end of clamping capacitor C6; the source of power switch S21, the drain of power switch S22, and the first tap of N3 are connected; the source of power switch S23, the drain of power switch S24, and the third tap of N3 are connected; the source of power switch S22 and the source of power switch S24 are connected to B-; electrical equipment requiring 12V is connected between 12VB+ and B- of port 3.

[0082] Referring to Figure 3, 48VB+ at port 4 is connected to the positive terminal of the vehicle's low-voltage 48V circuit and one end of solid-state relay Q7; the other end of solid-state relay Q7 is connected to the center tap of the N4 winding of transformer T1; the drains of power switching transistors S9 and S11 are connected to one end of clamping capacitor C3; the source of power switching transistor S9, the drain of power switching transistor S10, and the first tap of N4 are connected; the source of power switching transistor S11, the drain of power switching transistor S12, and the third tap of N3 are connected; the source of power switching transistors S10 and S12 are connected to B-; electrical equipment requiring 48V is connected between 48VB+ and B- at port 4.

[0083] Referring to Figure 3, port 5's 24VB+ is connected to the vehicle's low-voltage 24V positive terminal, one end of solid-state relay Q8, and one end of solid-state relay Q9; the other end of solid-state relay Q8 is connected to the center tap of transformer T1's N5 winding; the drains of power switching transistors S17 and S19 are connected to one end of clamping capacitor C5; the source of power switching transistor S17, the drain of power switching transistor S18, and the first tap of N5 are connected; the source of power switching transistor S19, the drain of power switching transistor S20, and the third tap of N5 are connected; the source of power switching transistors S18 and S19 are connected to B-; electrical equipment requiring 24V is connected between 24VB+ and port 5's B-.

[0084] Referring to Figure 3, the 12V / 24VB+ of port 6 is connected to the other end of solid-state relay Q9, the other end of solid-state relay Q6, one end of solid-state relay Q3, and one end of solid-state relay Q2; the other end of solid-state relay Q2 is connected to the center tap of the N6 winding of transformer T1; the drains of power switching transistors S25 and S27 are connected to one end of clamping capacitor C7; the source of power switching transistor S25, the drain of power switching transistor S26, one end of solid-state relay Q4, and one end of solid-state relay Q5 are connected; solid-state relays... The other end of Q4 and one end of solid-state relay Q1 are connected to the first tap of N6; the other end of solid-state relay Q1 is connected to one end of winding N7 of transformer T1; the other end of solid-state relay Q5 is connected to the other end of winding N7 of transformer T1; the source of power switch S27, the drain of power switch S28, and the third tap of N6 are connected; the source of power switch S26 and the source of power switch S28 are connected to B-; electrical equipment requiring 12V is also connected between 12V / 24VB+ and B- of port 6. Electrical equipment requiring 24V is also connected between 12V / 24VB+ and B- of port 6.

[0085] It should be noted that the central vehicle power supply system of this embodiment can be further expanded in terms of the number of ports based on the above structure to meet the power needs of more controllers in the vehicle. Port 6 can also be further expanded in terms of the number of series-connected turns to achieve switching between more voltage levels. The rated power ratio of ports 3 and 6 can be designed to ensure that port 3 is in the high-efficiency range within the commonly used power range and serves as the main power port, while port 6 serves as an auxiliary port for 12V and 24V, capable of quickly supplementing power in case of failure of ports 3 and 5, and can also be connected in parallel for output when the power required for low-voltage 12V and 24V is insufficient.

[0086] In the above embodiments, the AC port is a 220V AC port, the power battery port is a high-voltage direct current (HVDC) power battery port, and the at least two low-voltage DC ports include: a 12V next-generation low-voltage direct current (LVDC) port, a 48V LVDC port, and a 24V LVDC port; the backup low-voltage DC port is an LVDC port that enables switching between 12V and 24V. This common-core vehicle power system can provide 12V, 48V, and 24V voltages, meeting the voltage requirements of various controllers in the vehicle.

[0087] In some embodiments, a voltage control method is provided, which can be applied to the common-core vehicle power supply system in the above embodiments. Referring to Figure 4, the method includes:

[0088] S401, Received vehicle power-on command.

[0089] The vehicle can receive a power-on command triggered by the user.

[0090] S402. Based on at least one of the following: a first determination result of whether the vehicle has entered the charging mode, a second determination result of whether the vehicle has entered the discharging mode, and a third determination result of whether the vehicle is in a driving state, control each port in the common magnetic core vehicle power system.

[0091] The vehicle can receive charging commands triggered by the user and enter charging mode in response to the charging commands.

[0092] The vehicle can receive a discharge command triggered by the user and enter the discharge mode in response to the discharge command, or the vehicle can control whether to enter the discharge mode according to the built-in program.

[0093] The vehicle can control each port in the common magnetic core vehicle power system based on the first judgment result of whether the vehicle has entered the charging mode, the second judgment result of whether the vehicle has entered the discharging mode, and the third judgment result of whether the vehicle is in a driving state.

[0094] In the above embodiment, a vehicle power-on command is received; based on at least one of the following: a first determination result indicating whether the vehicle has entered charging mode, a second determination result indicating whether the vehicle has entered discharging mode, and a third determination result indicating whether the vehicle is in motion, each port in the common magnetic core vehicle power supply system is controlled. This ensures that controllers with different voltage requirements can operate normally, improving power supply quality and reliability.

[0095] In some embodiments, referring to Figure 5, after receiving the vehicle power-on command, it is determined whether the vehicle has entered the charging mode. If the vehicle has entered the charging mode, the aforementioned common-core vehicle power system is controlled to enter the charging and discharging mode shown in Figure 6, the solid-state relay Q10 is closed, and the switches at ports 1 and 2 are controlled to operate in the forward direction to charge the power battery. Simultaneously, the switch at port 3 is controlled to be in a forward 12V output state. At this time, energy flows from the 220V AC port (port 1) to the HVDC power battery port (port 2) and the 12V LVDC low-voltage DC port (port 3), as shown in Figure 7. Referring to Figures 6 and 7, under this condition, the 48V LVDC low-voltage DC port (port 4), the 24V LVDC low-voltage DC port (port 5), and the backup low-voltage DC port (port 6) are controlled to close.

[0096] If the vehicle is not in charging mode, determine if it is in discharging mode. If the vehicle is in discharging mode, control the common-core vehicle power system to enter the charging / discharging mode shown in Figure 6. Solid-state relay Q10 remains closed, and the switches at ports 1 and 2 are reversed to charge the battery. Switch at port 3 is in a positive 12V output state. Energy flows from the HVDC power battery port (port 2) to the 220V AC port (port 1) and the 12V LVDC low-voltage DC port (port 3), as shown in Figure 8. Referring to Figures 6 and 8, under this condition, the 48V LVDC low-voltage DC port (port 4), the 24V LVDC low-voltage DC port (port 5), and the backup low-voltage DC port (port 6) are closed.

[0097] If the vehicle is not in discharge mode, determine whether the vehicle is in motion. If the vehicle is not in motion, control the aforementioned common-core vehicle power system to enter the parking mode shown in Figure 9, close solid-state Q10, and only control the forward operation of the switches at ports 2 and 3. At this time, energy flows from the HVDC power battery port (port 2) to the 12V LVDC low-voltage DC port (port 3), as shown in Figure 10. Referring to Figures 9 and 10, under this condition, control the 220V AC port (port 1), the 48V LVDC low-voltage DC port (port 4), the 24V LVDC low-voltage DC port (port 5), and the backup low-voltage DC port (port 6) to close.

[0098] If the vehicle is in motion, the system checks whether there is power input to the vehicle's high-voltage system, i.e., whether the power battery can provide power to the vehicle's high-voltage system. If there is no power input to the vehicle's high-voltage system, the aforementioned common-core vehicle power supply system is controlled to enter the fault mode shown in Figure 11, closing solid-state relays Q8 and Q10. Simultaneously, port 3 is controlled to discharge to port 5, providing power assistance to the vehicle's 24V steering system (i.e., the electrical equipment at port 5). At this time, energy flows from the 12V LVDC low-voltage DC port (port 3) to the 24V LVDC low-voltage DC port (port 5), as shown in Figure 12. A prompt message is generated to alert the user that a vehicle malfunction has occurred and to pull over. Referring to Figures 11 and 12, in this operating condition, the 220V AC port (port 1), the HVDC power battery port (port 2), the 48V LVDC low-voltage DC port (port 4), and the backup low-voltage DC port (port 6) are closed.

[0099] If the vehicle's high-voltage system has power input, determine whether the power of the electrical equipment connected to the 12V LVDC low-voltage DC port is greater than the power of the 12V LVDC low-voltage DC port and the power of the backup low-voltage DC port. If so, control the above-mentioned common-core vehicle power system to enter the parallel mode shown in Figure 13, close solid-state relays Q2, Q4, Q6, Q7, Q8, and Q10, and simultaneously control the switching transistors at ports 2, 3, and 6 to output 12V in the forward direction, and control port 4 to be in a 48V output state. To ensure power supply to the active suspension (i.e., the electrical equipment at port 4), control port 5 to be in a 24V output state to ensure power supply to the electronically controlled EPS system (i.e., the electrical equipment at port 5). At this time, energy flows from the HVDC power battery port (port 2) to the 12V LVDC low-voltage DC port (port 3), the 48V LVDC low-voltage DC port (port 4), the 24V LVDC low-voltage DC port (port 5), and the backup low-voltage DC port (port 6), as shown in Figure 14. Referring to Figures 13 and 14, under this operating condition, the 220V AC port (port 1) is controlled to be closed.

[0100] If the power of the electrical equipment connected to the 12V LVDC low-voltage DC port is less than or equal to the power of the 12V LVDC low-voltage DC port, or less than or equal to the power of the backup low-voltage DC port, determine whether the efficiency of the 12V LVDC low-voltage DC port is greater than the efficiency of the backup low-voltage DC port for the electrical equipment connected to the 12V LVDC low-voltage DC port; if the efficiency of the 12V LVDC low-voltage DC port is less than or equal to the efficiency of the backup low-voltage DC port, then control the above-mentioned common magnet core vehicle power supply system to enter the 12V mode shown in Figure 15. In the auxiliary port output mode, solid-state relays Q2, Q4, Q7, and Q8 are closed. Control ports 2 and 3 are in a positive 12V output state, control port 4 is in a 48V output state to ensure power supply for the active suspension, and control port 5 is in a 24V output state to ensure power supply for the electronically controlled EPS system. At this time, energy flows from the HVDC power battery port (port 2) to the 48V LVDC low-voltage DC port (port 4), the 24V LVDC low-voltage DC port (port 5), and the backup low-voltage DC port (port 6), as shown in Figure 16. Referring to Figures 15 and 16, in this operating condition, the 220V AC port (port 1) and the 12V LVDC low-voltage DC port (port 3) are closed.

[0101] If the efficiency of the 12V LVDC low-voltage DC port is greater than the efficiency of the backup low-voltage DC port, determine whether the efficiency of the 24V LVDC low-voltage DC port connected to the electrical equipment is greater than the efficiency of the backup low-voltage DC port. If so, control the above-mentioned common magnetic core vehicle power system to enter the main driving working mode shown in Figure 17, close solid-state relays Q7, Q8, and Q10, control the switches of port 2 and port 3 to be in the positive 12V output state, control port 4 to be in the 48V output state to ensure power supply for the active suspension, and control port 5 to be in the 24V output state to ensure power supply for the electronic control EPS system. At this time, the energy flow is from the HVDC power battery port (port 2) to the 12V LVDC low-voltage DC port (port 3), the 48V LVDC low-voltage DC port (port 4), and the 24V LVDC low-voltage DC port (port 5), as shown in Figure 18. Referring to Figures 17 and 18, under this operating condition, the 220V AC port (port 1) and the backup low-voltage DC port (port 6) are closed. Otherwise, the above-mentioned common-core vehicle power system is controlled to enter the 24V auxiliary port output mode shown in Figure 19, closing solid-state relays Q1, Q3, Q5, Q7, Q9, and Q10. The switches of ports 2 and 3 are controlled to be in a positive 12V output state, port 4 is controlled to be in a 48V output state to ensure power supply for the active suspension, and port 5 is controlled to be in a 24V output state to ensure power supply for the electronic control EPS system. At this time, the energy flow is from the HVDC power battery port (port 2) to the 12V LVDC low-voltage DC port (port 3), the 48V LVDC low-voltage DC port (port 4), and the backup low-voltage DC port (port 6), as shown in Figure 20. Referring to Figures 19 and 20, under this operating condition, the 220V AC port (port 1) and the 24V LVDC low-voltage DC port (port 5) are closed.

[0102] The above embodiments propose an advanced central on-board power supply system capable of simultaneous output at different voltage levels across various platforms and AC / DC voltage conversion to meet the demands of loads with varying voltage requirements. A method is proposed to calibrate the transformer turns ratio of one or more output ports using solid-state relays, enabling switching between different turns ratios to accommodate single-port switching across different voltage platforms, thereby changing the output voltage range and providing dual-path redundancy. An advanced control strategy for the central on-board power supply system is also proposed, enabling intelligent power allocation in charging, discharging, normal driving, and fault-prone driving modes, thus improving overall vehicle reliability.

[0103] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0104] In one exemplary embodiment, an electronic device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to perform the following steps:

[0105] Received vehicle power-on command;

[0106] Based on at least one of the following: a first determination result indicating whether the vehicle has entered charging mode; a second determination result indicating whether the vehicle has entered discharging mode; and a third determination result indicating whether the vehicle is in a driving state, each port in the common magnetic core vehicle power system is controlled.

[0107] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0108] Determine if the vehicle has entered charging mode;

[0109] If the vehicle enters charging mode, control the energy flow from the 220V AC port to the HVDC power battery port and the 12V LVDC low-voltage DC port, and control the 48V LVDC low-voltage DC port, the 24V LVDC low-voltage DC port and the backup low-voltage DC port to shut down.

[0110] If the vehicle is not in charging mode, determine whether the vehicle has entered discharging mode;

[0111] If the vehicle enters the discharge mode, the energy flow is controlled to flow from the HVDC power battery port to the 220V AC port and the 12V LVDC low-voltage DC port, and the 48V LVDC low-voltage DC port, the 24V LVDC low-voltage DC port and the backup low-voltage DC port are controlled to be turned off.

[0112] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0113] If the vehicle has not entered the discharge mode, determine whether the vehicle is in motion;

[0114] If the vehicle is not in motion, control the energy flow from the HVDC power battery port to the 12V LVDC low-voltage DC port, and control the 220V AC port, the 48V LVDC low-voltage DC port, the 24V LVDC low-voltage DC port and the backup low-voltage DC port to shut down.

[0115] If the vehicle is in motion, determine whether there is electrical power input to the vehicle's high-voltage system;

[0116] If there is no power input to the vehicle's high-voltage system, the energy flow is controlled to flow from the 12V LVDC low-voltage DC port to the 24V LVDC low-voltage DC port, and the 220V AC port, the HVDC power battery port, the 48V LVDC low-voltage DC port, and the backup low-voltage DC port are controlled to shut down; and a prompt message is generated to remind the user that the vehicle has malfunctioned and to pull over.

[0117] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0118] If there is electrical power input to the vehicle's high-voltage system, determine whether the power of the electrical equipment connected to the 12V LVDC low-voltage DC port is greater than the power of the 12V LVDC low-voltage DC port and the power of the backup low-voltage DC port.

[0119] If so, control the energy flow from the HVDC power battery port to the 12V LVDC low-voltage DC port, the 48V LVDC low-voltage DC port, the 24V LVDC low-voltage DC port and the backup low-voltage DC port, and control the 220V AC port to shut down;

[0120] If the power of the 12V LVDC low-voltage DC port is less than or equal to the power of the backup low-voltage DC port, determine whether the efficiency of the 12V LVDC low-voltage DC port is greater than the efficiency of the backup low-voltage DC port for the electrical equipment connected to the 12V LVDC low-voltage DC port.

[0121] If the efficiency of the 12V LVDC low-voltage DC port is less than or equal to the efficiency of the backup low-voltage DC port, control the energy flow from the HVDC power battery port to the 48V LVDC low-voltage DC port, the 24V LVDC low-voltage DC port, and the backup low-voltage DC port, and control the 220V AC port and the 12V LVDC low-voltage DC port to shut down.

[0122] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0123] If the efficiency of the 12V LVDC low-voltage DC port is greater than the efficiency of the backup low-voltage DC port, determine whether the efficiency of the 24V LVDC low-voltage DC port is greater than the efficiency of the backup low-voltage DC port for the electrical equipment connected to the 24V LVDC low-voltage DC port.

[0124] If so, control the energy flow from the HVDC power battery port to the 12V LVDC low-voltage DC port, the 48V LVDC low-voltage DC port, and the 24V LVDC low-voltage DC port, and control the 220V AC port and the backup low-voltage DC port to shut down;

[0125] If not, control the energy flow from the HVDC power battery port to the 12V LVDC low-voltage DC port, the 48V LVDC low-voltage DC port, and the backup low-voltage DC port; and control the 220V AC port and the 24V LVDC low-voltage DC port to shut down.

[0126] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, the computer program performing the following steps when executed by a processor:

[0127] Received vehicle power-on command;

[0128] Based on at least one of the following: a first determination result indicating whether the vehicle has entered charging mode; a second determination result indicating whether the vehicle has entered discharging mode; and a third determination result indicating whether the vehicle is in a driving state, each port in the common magnetic core vehicle power system is controlled.

[0129] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0130] Determine if the vehicle has entered charging mode;

[0131] If the vehicle enters charging mode, control the energy flow from the 220V AC port to the HVDC power battery port and the 12V LVDC low-voltage DC port, and control the 48V LVDC low-voltage DC port, the 24V LVDC low-voltage DC port and the backup low-voltage DC port to shut down.

[0132] If the vehicle is not in charging mode, determine whether the vehicle has entered discharging mode;

[0133] If the vehicle enters the discharge mode, the energy flow is controlled to flow from the HVDC power battery port to the 220V AC port and the 12V LVDC low-voltage DC port, and the 48V LVDC low-voltage DC port, the 24V LVDC low-voltage DC port and the backup low-voltage DC port are controlled to be turned off.

[0134] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0135] If the vehicle has not entered the discharge mode, determine whether the vehicle is in motion;

[0136] If the vehicle is not in motion, control the energy flow from the HVDC power battery port to the 12V LVDC low-voltage DC port, and control the 220V AC port, the 48V LVDC low-voltage DC port, the 24V LVDC low-voltage DC port and the backup low-voltage DC port to shut down.

[0137] If the vehicle is in motion, determine whether there is electrical power input to the vehicle's high-voltage system;

[0138] If there is no power input to the vehicle's high-voltage system, the energy flow is controlled to flow from the 12V LVDC low-voltage DC port to the 24V LVDC low-voltage DC port, and the 220V AC port, the HVDC power battery port, the 48V LVDC low-voltage DC port, and the backup low-voltage DC port are controlled to shut down; and a prompt message is generated to remind the user that the vehicle has malfunctioned and to pull over.

[0139] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0140] If there is electrical power input to the vehicle's high-voltage system, determine whether the power of the electrical equipment connected to the 12V LVDC low-voltage DC port is greater than the power of the 12V LVDC low-voltage DC port and the power of the backup low-voltage DC port.

[0141] If so, control the energy flow from the HVDC power battery port to the 12V LVDC low-voltage DC port, the 48V LVDC low-voltage DC port, the 24V LVDC low-voltage DC port and the backup low-voltage DC port, and control the 220V AC port to shut down;

[0142] If the power of the 12V LVDC low-voltage DC port is less than or equal to the power of the backup low-voltage DC port, determine whether the efficiency of the 12V LVDC low-voltage DC port is greater than the efficiency of the backup low-voltage DC port for the electrical equipment connected to the 12V LVDC low-voltage DC port.

[0143] If the efficiency of the 12V LVDC low-voltage DC port is less than or equal to the efficiency of the backup low-voltage DC port, control the energy flow from the HVDC power battery port to the 48V LVDC low-voltage DC port, the 24V LVDC low-voltage DC port, and the backup low-voltage DC port, and control the 220V AC port and the 12V LVDC low-voltage DC port to shut down.

[0144] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0145] If the efficiency of the 12V LVDC low-voltage DC port is greater than the efficiency of the backup low-voltage DC port, determine whether the efficiency of the 24V LVDC low-voltage DC port is greater than the efficiency of the backup low-voltage DC port for the electrical equipment connected to the 24V LVDC low-voltage DC port.

[0146] If so, control the energy flow from the HVDC power battery port to the 12V LVDC low-voltage DC port, the 48V LVDC low-voltage DC port, and the 24V LVDC low-voltage DC port, and control the 220V AC port and the backup low-voltage DC port to shut down;

[0147] If not, control the energy flow from the HVDC power battery port to the 12V LVDC low-voltage DC port, the 48V LVDC low-voltage DC port, and the backup low-voltage DC port; and control the 220V AC port and the 24V LVDC low-voltage DC port to shut down.

[0148] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, performs the following steps:

[0149] Received vehicle power-on command;

[0150] Based on at least one of the following: a first determination result indicating whether the vehicle has entered charging mode; a second determination result indicating whether the vehicle has entered discharging mode; and a third determination result indicating whether the vehicle is in a driving state, each port in the common magnetic core vehicle power system is controlled.

[0151] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0152] Determine if the vehicle has entered charging mode;

[0153] If the vehicle enters charging mode, control the energy flow from the 220V AC port to the HVDC power battery port and the 12V LVDC low-voltage DC port, and control the 48V LVDC low-voltage DC port, the 24V LVDC low-voltage DC port and the backup low-voltage DC port to shut down.

[0154] If the vehicle is not in charging mode, determine whether the vehicle has entered discharging mode;

[0155] If the vehicle enters the discharge mode, the energy flow is controlled to flow from the HVDC power battery port to the 220V AC port and the 12V LVDC low-voltage DC port, and the 48V LVDC low-voltage DC port, the 24V LVDC low-voltage DC port and the backup low-voltage DC port are controlled to be turned off.

[0156] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0157] If the vehicle has not entered the discharge mode, determine whether the vehicle is in motion;

[0158] If the vehicle is not in motion, control the energy flow from the HVDC power battery port to the 12V LVDC low-voltage DC port, and control the 220V AC port, the 48V LVDC low-voltage DC port, the 24V LVDC low-voltage DC port and the backup low-voltage DC port to shut down.

[0159] If the vehicle is in motion, determine whether there is electrical power input to the vehicle's high-voltage system;

[0160] If there is no power input to the vehicle's high-voltage system, the energy flow is controlled to flow from the 12V LVDC low-voltage DC port to the 24V LVDC low-voltage DC port, and the 220V AC port, the HVDC power battery port, the 48V LVDC low-voltage DC port, and the backup low-voltage DC port are controlled to shut down; and a prompt message is generated to remind the user that the vehicle has malfunctioned and to pull over.

[0161] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0162] If there is electrical power input to the vehicle's high-voltage system, determine whether the power of the electrical equipment connected to the 12V LVDC low-voltage DC port is greater than the power of the 12V LVDC low-voltage DC port and the power of the backup low-voltage DC port.

[0163] If so, control the energy flow from the HVDC power battery port to the 12V LVDC low-voltage DC port, the 48V LVDC low-voltage DC port, the 24V LVDC low-voltage DC port and the backup low-voltage DC port, and control the 220V AC port to shut down;

[0164] If the power of the 12V LVDC low-voltage DC port is less than or equal to the power of the backup low-voltage DC port, determine whether the efficiency of the 12V LVDC low-voltage DC port is greater than the efficiency of the backup low-voltage DC port for the electrical equipment connected to the 12V LVDC low-voltage DC port.

[0165] If the efficiency of the 12V LVDC low-voltage DC port is less than or equal to the efficiency of the backup low-voltage DC port, control the energy flow from the HVDC power battery port to the 48V LVDC low-voltage DC port, the 24V LVDC low-voltage DC port, and the backup low-voltage DC port, and control the 220V AC port and the 12V LVDC low-voltage DC port to shut down.

[0166] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0167] If the efficiency of the 12V LVDC low-voltage DC port is greater than the efficiency of the backup low-voltage DC port, determine whether the efficiency of the 24V LVDC low-voltage DC port is greater than the efficiency of the backup low-voltage DC port for the electrical equipment connected to the 24V LVDC low-voltage DC port.

[0168] If so, control the energy flow from the HVDC power battery port to the 12V LVDC low-voltage DC port, the 48V LVDC low-voltage DC port, and the 24V LVDC low-voltage DC port, and control the 220V AC port and the backup low-voltage DC port to shut down;

[0169] If not, control the energy flow from the HVDC power battery port to the 12V LVDC low-voltage DC port, the 48V LVDC low-voltage DC port, and the backup low-voltage DC port; and control the 220V AC port and the 24V LVDC low-voltage DC port to shut down.

[0170] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the methods described above. Any references to memory, databases, or other media used in the embodiments provided in this disclosure can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this disclosure may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this disclosure may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, artificial intelligence (AI) processors, etc., and are not limited to these.

[0171] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this disclosure.

[0172] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent disclosure. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this disclosure should be determined by the appended claims. Industrial applicability

[0173] This disclosure addresses the diverse power demands caused by the different operating voltage ranges of active suspension systems, electric ball steering systems, and other controllers currently on the market. It proposes an intelligent, multi-voltage platform integrated output, redundant backup central vehicle power supply system, comprising: an AC port sharing the same magnetic core, a power battery port, at least two low-voltage DC ports, and a backup low-voltage DC port. Different low-voltage DC ports output different voltages, and the backup low-voltage DC port is configured to output at least two voltages. The voltages output by the at least two low-voltage DC ports include at least two voltages. The AC port is connected to the mains power supply, the power battery port is connected to the power battery, and the at least two low-voltage DC ports and the backup low-voltage DC port are respectively connected to electrical equipment with voltage requirements matching the user's needs. Through integrated power topology design, a common core design was achieved for the AC port, power battery port, low-voltage DC port, and backup low-voltage DC port. This enables energy transfer between ports and avoids charge exchange between high and low voltages. Since the common core design isolates the low-voltage outputs, a fault in one port will not affect the other ports, thus improving power quality and reliability. Compared with adding converters of different voltage levels, this design is less difficult to implement and less expensive.

Claims

1. A common-core vehicle power supply system, comprising: The device shares the same magnetic core, including an AC port, a power battery port, at least two low-voltage DC ports, and a backup low-voltage DC port. The different low-voltage DC ports output different voltages, and the backup low-voltage DC port is configured to output at least two voltages. The voltages output by the at least two low-voltage DC ports include the at least two voltages. The AC port is connected to the mains power supply, the power battery port is connected to the power battery, and the at least two low-voltage DC ports and the backup low-voltage DC port are respectively connected to electrical equipment with voltage requirements.

2. The system according to claim 1, wherein, The AC port is a 220V AC port, the power battery port is a high-voltage direct current (HVDC) power battery port, and the at least two low-voltage DC ports include: a 12V next-generation low-voltage DC (LVDC) port, a 48V LVDC port, and a 24V LVDC port; the backup low-voltage DC port is an LVDC port that enables switching between 12V and 24V.

3. A voltage control method applied to the system of claim 1 or 2, the method comprising: Received vehicle power-on command; Based on at least one of the following: a first determination result indicating whether the vehicle has entered charging mode; a second determination result indicating whether the vehicle has entered discharging mode; and a third determination result indicating whether the vehicle is in a driving state, each port in the common magnetic core vehicle power system is controlled.

4. The method according to claim 3, wherein, The control of each port in the common-magnetic core vehicle power system based on at least one of the following: a first determination result of whether the vehicle has entered charging mode, a second determination result of whether the vehicle has entered discharging mode, and a third determination result of whether the vehicle is in motion, includes: Determine if the vehicle has entered charging mode; If the vehicle enters charging mode, control the energy flow from the 220V AC port to the HVDC power battery port and the 12V LVDC low-voltage DC port, and control the 48V LVDC low-voltage DC port, the 24V LVDC low-voltage DC port and the backup low-voltage DC port to shut down. If the vehicle is not in charging mode, determine whether the vehicle has entered discharging mode; If the vehicle enters the discharge mode, the energy flow is controlled to flow from the HVDC power battery port to the 220V AC port and the 12V LVDC low-voltage DC port, and the 48V LVDC low-voltage DC port, the 24V LVDC low-voltage DC port and the backup low-voltage DC port are controlled to be turned off.

5. The method according to claim 4, wherein, The method further includes: If the vehicle has not entered the discharge mode, determine whether the vehicle is in motion; If the vehicle is not in motion, control the energy flow from the HVDC power battery port to the 12V LVDC low-voltage DC port, and control the 220V AC port, the 48V LVDC low-voltage DC port, the 24V LVDC low-voltage DC port and the backup low-voltage DC port to shut down. If the vehicle is in motion, determine whether there is electrical power input to the vehicle's high-voltage system; If there is no power input to the vehicle's high-voltage system, the energy flow is controlled to flow from the 12V LVDC low-voltage DC port to the 24V LVDC low-voltage DC port, and the 220V AC port, the HVDC power battery port, the 48V LVDC low-voltage DC port, and the backup low-voltage DC port are controlled to shut down; and a prompt message is generated to remind the user that the vehicle has malfunctioned and to pull over.

6. The method according to claim 5, wherein, The method further includes: If there is electrical power input to the vehicle's high-voltage system, determine whether the power of the electrical equipment connected to the 12V LVDC low-voltage DC port is greater than the power of the 12V LVDC low-voltage DC port and the power of the backup low-voltage DC port. If so, control the energy flow from the HVDC power battery port to the 12V LVDC low-voltage DC port, the 48V LVDC low-voltage DC port, the 24V LVDC low-voltage DC port and the backup low-voltage DC port, and control the 220V AC port to shut down; If the power of the 12V LVDC low-voltage DC port is less than or equal to the power of the backup low-voltage DC port, determine whether the efficiency of the 12V LVDC low-voltage DC port is greater than the efficiency of the backup low-voltage DC port for the electrical equipment connected to the 12V LVDC low-voltage DC port. If the efficiency of the 12V LVDC low-voltage DC port is less than or equal to the efficiency of the backup low-voltage DC port, control the energy flow from the HVDC power battery port to the 48V LVDC low-voltage DC port, the 24V LVDC low-voltage DC port, and the backup low-voltage DC port, and control the 220V AC port and the 12V LVDC low-voltage DC port to shut down.

7. The method according to claim 6, wherein, The method further includes: If the efficiency of the 12V LVDC low-voltage DC port is greater than the efficiency of the backup low-voltage DC port, determine whether the efficiency of the 24V LVDC low-voltage DC port is greater than the efficiency of the backup low-voltage DC port for the electrical equipment connected to the 24V LVDC low-voltage DC port. If so, control the energy flow from the HVDC power battery port to the 12V LVDC low-voltage DC port, the 48V LVDC low-voltage DC port, and the 24V LVDC low-voltage DC port, and control the 220V AC port and the backup low-voltage DC port to shut down; If not, control the energy flow from the HVDC power battery port to the 12V LVDC low-voltage DC port, the 48V LVDC low-voltage DC port, and the backup low-voltage DC port; and control the 220V AC port and the 24V LVDC low-voltage DC port to shut down.

8. An electronic device comprising a memory and a processor, the memory storing a computer program, the processor executing the computer program to implement the steps of the method according to any one of claims 3 to 7.

9. A computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method according to any one of claims 3 to 7.

10. A computer program product comprising a computer program that, when executed by a processor, implements the steps of the method according to any one of claims 3 to 7.

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