Common magnetic core vehicle-mounted power supply system, voltage control method and electronic device

Abstract

The present application relates to a co-core vehicle-mounted power supply system, a voltage control method and an electronic device. It includes: an AC port, a power battery port, at least two DC output ports and a spare DC output port that share the same magnetic core. The voltages output by different DC output ports are different, and the spare DC output port is used to output at least two voltages; the voltages output by the at least two DC output ports include the at least two voltages; the AC port is connected to the mains power, the power battery port is connected to the power battery, and the at least two DC output ports and the spare DC output port are respectively connected to electrical devices that match the voltage requirements. The implementation difficulty is relatively low and the cost is relatively small.

Description

Technical Field

[0001] The present application relates to the technical field of vehicles, and in particular, to a common magnetic core vehicle-mounted power supply system, a voltage control method, an electronic device, a readable storage medium, and a program product. Background Art

[0002] With the continuous upgrading of new energy vehicles, vehicle controllers are diversified, and different controllers require different voltages. For example, the active suspension system required by high-end hybrid vehicles needs to be below 48V to drive efficiently, and the electric ball circulating steering gear needs to be below 24V to operate efficiently. Today's 12V low-voltage system is increasingly difficult to meet the voltage requirements of vehicle controllers, and the low-voltage system also affects the efficient drive of each controller. Therefore, new energy vehicles need to add 24V and 48V low-voltage systems on the existing 12V low-voltage system.

[0003] In traditional technologies, a DC / DC converter for converting high voltage to 12V is added with a DC / DC converter for converting high voltage to 24V and a DC / DC converter for converting high voltage to 48V.

[0004] However, the addition of new converters not only needs to consider costs but also many factors such as the overall vehicle layout and high-voltage topology architecture. The vehicle needs to be continuously adjusted and adapted, which is very difficult and the cost will also increase. Summary of the Invention

[0005] Based on this, it is necessary to provide a common magnetic core vehicle-mounted power supply system, a voltage control method, an electronic device, a readable storage medium, and a program product that can reduce the implementation difficulty and cost for the above technical problems.

[0006] In a first aspect, the present application provides a common magnetic core vehicle-mounted power supply system, including:

[0007] An AC port, a power battery port, at least two DC output ports, and a spare DC output port that share the same magnetic core, where the voltages output by different DC output ports are different, and the spare DC output port is used to output at least two voltages; the voltages output by the at least two DC output ports include the at least two voltages; the AC port is connected to the commercial power, the power battery port is connected to the power battery, and the at least two DC output ports and the spare DC output port are respectively connected to electrical equipment that matches the voltage requirements.

[0008] 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 DC output ports include: a new generation of low-voltage direct current (LVDC) 12V DC output port, an LVDC 48V DC output port, and an LVDC 24V DC output port; the spare DC output port is an LVDC DC output port that enables switching between 12V and 24V.

[0009] Second, the present application also provides a voltage control method, which is applied to the system described in the first aspect. The method includes:

[0010] Receiving a vehicle power-on command;

[0011] Controlling each port in the common magnetic core vehicle-mounted power supply system according to at least one of a first judgment result on whether the vehicle enters a charging mode, a second judgment result on whether the vehicle enters a discharging mode, and a third judgment result on whether the vehicle is in a driving state.

[0012] In one embodiment, the controlling each port in the common magnetic core vehicle-mounted power supply system according to at least one of a first judgment result on whether the vehicle enters a charging mode, a second judgment result on whether the vehicle enters a discharging mode, and a third judgment result on whether the vehicle is in a driving state includes:

[0013] Judging whether the vehicle enters a charging mode;

[0014] If the vehicle enters a charging mode, controlling the energy flow to flow from the 220V AC port to the HVDC power battery port and the 12V LVDC DC output port, and controlling the 48V LVDC DC output port, the 24V LVDC DC output port, and the spare DC output port to be closed;

[0015] If the vehicle does not enter a charging mode, judging whether the vehicle enters a discharging mode;

[0016] If the vehicle enters a discharging mode, controlling the energy flow to flow from the HVDC power battery port to the 220V AC port and the 12V LVDC DC output port, and controlling the 48V LVDC DC output port, the 24V LVDC DC output port, and the spare DC output port to be closed.

[0017] In one embodiment, the method further includes:

[0018] If the vehicle does not enter a discharging mode, judging whether the vehicle is in a driving state;

[0019] If the vehicle is not in a driving state, control the energy flow to flow from the HVDC power battery port to the 12V LVDC DC output port, and control the 220V AC port, the 48V LVDC DC output port, the 24V LVDC DC output port, and the spare DC output port to be closed;

[0020] If the vehicle is in a driving state, determine whether there is electrical energy input to the vehicle's target system;

[0021] If there is no electrical energy input to the vehicle's target system, control the energy flow to flow from the 12V LVDC DC output port to the 24V LVDC DC output port, and control the 220V AC port, the HVDC power battery port, the 48V LVDC DC output port, and the spare DC output port to be closed; and generate a prompt message to prompt the user that the vehicle has a fault and pull over.

[0022] In one embodiment, the method further includes:

[0023] If there is electrical energy input to the vehicle's target system, determine whether the power of the electrical equipment connected to the 12V LVDC DC output port is greater than the power of the 12V LVDC DC output port and the power of the spare DC output port;

[0024] If so, control the energy flow to flow from the HVDC power battery port to the 12V LVDC DC output port, the 48V LVDC DC output port, the 24V LVDC DC output port, and the spare DC output port, and control the 220V AC port to be closed;

[0025] If it is less than or equal to the power of the 12V LVDC DC output port, or less than or equal to the power of the spare DC output port, determine whether the efficiency of the 12V LVDC DC output port for the electrical equipment connected to the 12V LVDC DC output port is greater than the efficiency of the spare DC output port;

[0026] If the efficiency of the 12V LVDC DC output port is less than or equal to the efficiency of the spare DC output port, control the energy flow to flow from the HVDC power battery port to the 48V LVDC DC output port, the 24V LVDC DC output port, and the spare DC output port, and control the 220V AC port and the 12V LVDC DC output port to be closed.

[0027] In one embodiment, the method further includes:

[0028] If the efficiency of the 12V LVDC DC output port is greater than that of the backup DC output port, determine whether the efficiency of the 24V LVDC DC output port is greater than that of the backup DC output port for the electrical equipment connected to the 24V LVDC DC output port;

[0029] If so, control the energy flow to flow from the HVDC power battery port to the 12V LVDC DC output port, the 48V LVDC DC output port, and the 24V LVDC DC output port, and control the 220V AC port and the backup DC output port to be closed;

[0030] If not, control the energy flow to flow from the HVDC power battery port to the 12V LVDC DC output port, the 48V LVDC DC output port, and the backup DC output port; and control the 220V AC port and the 24V LVDC DC output port to be closed.

[0031] In a third aspect, the present application further provides an electronic device, including a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0032] Receive a vehicle power-on instruction;

[0033] Control each port in the common magnetic core vehicle-mounted power supply system according to at least one of a first judgment result on whether the vehicle enters a charging mode, a second judgment result on whether the vehicle enters a discharging mode, and a third judgment result on whether the vehicle is in a driving state.

[0034] In a fourth aspect, the present application further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the following steps are implemented:

[0035] Receive a vehicle power-on instruction;

[0036] Control each port in the common magnetic core vehicle-mounted power supply system according to at least one of a first judgment result on whether the vehicle enters a charging mode, a second judgment result on whether the vehicle enters a discharging mode, and a third judgment result on whether the vehicle is in a driving state.

[0037] In a fifth aspect, the present application further provides a computer program product, including a computer program. When the computer program is executed by a processor, the following steps are implemented:

[0038] Receive a vehicle power-on instruction;

[0039] Control each port in the common magnetic core vehicle-mounted power supply system according to at least one of a first determination result as to whether the vehicle enters a charging mode, a second determination result as to whether the vehicle enters a discharging mode, and a third determination result as to whether the vehicle is in a driving state.

[0040] Regarding the above common magnetic core vehicle-mounted power supply system, voltage control method, electronic device, readable storage medium, and program product, in view of the diverse power consumption requirements caused by the different working voltage ranges of active suspension systems, electric ball circulating steering gears, and other controllers in the current market, an intelligent, multi-voltage platform integrated output, and redundant backup central vehicle-mounted power supply system is proposed, including: an AC port sharing the same magnetic core, a power battery port, at least two DC output ports, and a backup DC output port. The voltages output by different DC output ports are different, and the backup DC output port is used to output at least two voltages; the voltages output by the at least two DC output ports include the at least two voltages; the AC port is connected to the mains power, the power battery port is connected to the power battery, and the at least two DC output ports and the backup DC output port are respectively connected to electrical equipment matching the voltage requirements. Through the integrated design of the power topology, the common magnetic core design of the AC port, power battery port, DC output port, and backup DC output port is realized, which can achieve the mutual transfer of energy among the ports and avoid the exchange of charges between high and low voltages. Since the common magnetic core design can isolate the low-voltage outputs of each path, the failure of one port will not affect the other ports, improving the power supply quality and reliability. Compared with adding converters of different voltage levels, the implementation difficulty is lower and the cost is smaller. Description of the Drawings

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following will briefly introduce the drawings required to be used in the description of the embodiments of the present application or related technologies. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0042] Figure 1 It is a schematic structural diagram of the common magnetic core vehicle-mounted power supply system in one embodiment;

[0043] Figure 2 It is a schematic structural diagram of the common magnetic core vehicle-mounted power supply system in another embodiment;

[0044] Figure 3 It is a schematic circuit structure diagram of each port in one embodiment;

[0045] Figure 4 It is a schematic flow diagram of the voltage control method in one embodiment;

[0046] Figure 5 It is a schematic flowchart of a voltage control method in another embodiment;

[0047] Figure 6 It is a schematic diagram of a charge-discharge mode in an embodiment;

[0048] Figure 7 It is a schematic diagram of a charging energy flow in an embodiment;

[0049] Figure 8 It is a schematic diagram of a discharging energy flow in an embodiment;

[0050] Figure 9 It is a schematic diagram of a parking mode in an embodiment;

[0051] Figure 10 It is a schematic diagram of a parking energy flow in an embodiment;

[0052] Figure 11 It is a schematic diagram of a fault mode in an embodiment;

[0053] Figure 12 It is a schematic diagram of a fault energy flow in an embodiment;

[0054] Figure 13 It is a schematic diagram of a 12V parallel output mode in an embodiment;

[0055] Figure 14 It is a schematic diagram of a 12V parallel output energy flow in an embodiment;

[0056] Figure 15 It is a schematic diagram of a 12V auxiliary port output mode in an embodiment;

[0057] Figure 16 It is a schematic diagram of a 12V auxiliary port output energy flow in an embodiment;

[0058] Figure 17 It is a schematic diagram of a main driving working mode in an embodiment;

[0059] Figure 18 It is a schematic diagram of a main driving working mode energy flow in an embodiment;

[0060] Figure 19 It is a schematic diagram of a 24V auxiliary port output mode in an embodiment;

[0061] Figure 20 It is a schematic diagram of a 24V auxiliary port energy flow in an embodiment. Detailed implementation manners

[0062] In order to make the objectives, technical solutions and advantages of this application more clear and understandable, the following further elaborates on this application in combination with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not used to limit this application.

[0063] The embodiment of this application provides a common-core vehicle-mounted power supply system, which can be applied to new energy vehicles. This vehicle-mounted power supply system is a central vehicle-mounted power supply system that can output different voltage levels in a hierarchical manner, and uses different ports to output different voltage levels to meet the needs of electrical equipment; achieving the development objectives of integration, modularization, and standardization of power products.

[0064] In some embodiments, as shown in Figure 1 the common-core vehicle-mounted power supply system includes: an AC port, a power battery port, at least two DC output ports, and a spare DC output port that share the same magnetic core. The voltages output by the at least two DC output ports are different, and the spare DC output port is used to output at least two voltages; the voltages output by the at least two DC output ports include the at least two voltages; the AC port is connected to the mains power, the power battery port is connected to the power battery, and the at least two DC output ports and the spare DC output port are respectively connected to electrical equipment that matches the voltage requirements.

[0065] Among them, the AC port, the power battery port, the at least two DC output ports, and the spare DC output port share the same magnetic core.

[0066] Among them, the AC port is connected to the mains power. The AC port can be a 220V AC port, a 230V AC port, a 100V AC port, or a 110V AC port, etc. The embodiment of this application does not limit this.

[0067] Among them, the power battery port can be a High Voltage Direct Current (HVDC) power battery port.

[0068] Among them, the at least two DC output ports can be set according to the voltage requirements of each controller in the new energy vehicle, and the voltages output by different DC output ports are different.

[0069] Exemplarily, the at least two DC output ports can include: a 12V new generation low-voltage DC LVDC DC output port, a 48V LVDC DC output port, and a 24V LVDC DC output port; the voltage output by the 12V LVDC DC output port is 12V, the voltage output by the 48V LVDC DC output port is 48V, and the voltage output by the 24V LVDC DC output port is 24V.

[0070] Among them, the spare DC output port is used to output at least two voltages, and the voltages output by at least two DC output ports include these at least two voltages.

[0071] For example: at least two DC output ports may include: a new generation of low-voltage DC LVDC DC output port of 12V, an LVDC DC output port of 48V, and an LVDC DC output port of 24V; that is to say, the voltages output by at least two DC output ports include 12V, 24V, and 48V; then, the spare DC output port can output 12V and 24V; or, the spare DC output port can output 12V and 48V; or, the spare DC output port can output 24V and 48V, which can be flexibly set according to the actual situation.

[0072] Among them, the power battery port is connected to the power battery, and at least two DC output ports and the spare DC output port are respectively connected to electrical equipment matching the voltage requirements.

[0073] Exemplarily, at least two DC output ports may include: an LVDC DC output port of 12V, an LVDC DC output port of 48V, and an LVDC DC output port of 24V; the LVDC DC output port of 12V can be connected to electrical equipment with a voltage requirement of 12V; the LVDC DC output port of 48V can be connected to electrical equipment with a voltage requirement of 48V, such as an active suspension system; the LVDC DC output port of 24V can be connected to electrical equipment with a voltage requirement of 24V, such as an electric ball circulating steering gear.

[0074] Exemplarily, the spare DC output port can output 12V and 24V, and the spare DC output port can be connected to electrical equipment with a voltage requirement of 12V and electrical equipment with a voltage requirement of 24V.

[0075] In the above embodiments, in view of the problem of diversified power consumption requirements caused by the different operating voltage ranges of active suspension systems, electric ball circulation steering gears, and other controllers in the current market, an intelligent, integrated output with multiple voltage platforms, and redundant central in-vehicle power supply system is proposed, including: an AC port, a power battery port, at least two DC output ports, and a standby DC output port sharing the same magnetic core. The voltages output by different DC output ports are different, and the standby DC output port is used to output at least two voltages; the voltages output by the at least two DC output ports include the at least two voltages; the AC port is connected to the mains power, the power battery port is connected to the power battery, and the at least two DC output ports and the standby DC output port are respectively connected to electrical equipment matching the voltage requirements. Through the integrated design of the power topology, the co-magnetic core design of the AC port, the power battery port, the DC output ports, and the standby DC output port is realized, which can achieve the mutual transfer of energy among the ports and avoid the charge exchange between high and low voltages. Since the co-magnetic core design can isolate the low-voltage outputs of each path, the failure of one port will not affect the other ports, improving the power supply quality and reliability. Compared with adding converters of different voltage levels, the implementation difficulty is lower and the cost is smaller.

[0076] 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 DC output ports include: a new generation of 12V low-voltage direct current (LVDC) DC output port, a 48V LVDC DC output port, and a 24V LVDC DC output port; the standby DC output port is an LVDC DC output port that realizes the switching between 12V and 24V. Refer to Figure 2 As shown, the 220V AC port is identified by port 1, the HVDC power battery port is identified by port 2, the 12V LVDC DC output port is identified by port 3, the 48V LVDC DC output port is identified by port 4, the 24V LVDC DC output port is identified by port 5, and the LVDC DC output port that realizes the switching between 12V and 24V is identified by port 6.

[0077] For the circuit structures of each port, refer to Figure 3As shown, the AC-L and AC-N of port 1 are respectively connected to the live wire and neutral wire of the 220V AC input of the mains power supply. The other end of AC-L is connected to one end of energy storage inductors L1 and L2. Power switch tubes S1 and S2 together form the fast bridge arm of the interleaved totem-pole power factor correction circuit, and the midpoint is connected to the other end of inductor L1. Power switch tubes S3 and S4 together form the slow bridge arm of the interleaved totem-pole power factor correction circuit, and the midpoint is connected to the other end of inductor L2. The drain of power switch tube S1, the drain of power switch tube S3, one end of energy storage capacitor C1, the drain of power switch tube S5, and the drain of power switch tube S7 are connected. The source of power switch tube S2, the source of power switch tube S4, the other end of energy storage capacitor C1, the source of power switch tube S6, and the source of power switch tube S8 are connected. The midpoint where power switch tubes S5 and S6 are connected is connected to one end of resonant inductor L3. The midpoint where power switch tubes S7 and S8 are connected is connected to one end of resonant capacitor C2. The other end of the resonant inductor is connected to one end of winding N1 of transformer T1. The other end of the resonant capacitor is connected to the other end of winding N1 of transformer T1.

[0078] Continue to refer to Figure 3 As shown, HV+ of port 2 is connected to the positive electrode of the power battery (vehicle power distribution) and one end of energy storage capacitor C4, and HV- is connected to the negative electrode of the power battery (vehicle power distribution) and the other end of energy storage capacitor C4. Power switch tubes S13, S14, S15, and S16 form a full-bridge circuit, and the midpoints of each bridge arm are respectively connected to both ends of winding N2 of transformer T1.

[0079] Continue to refer to Figure 3 As shown, 12VB+ of port 3 is connected to the positive electrode 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 winding N3 of transformer T1 and one end of solid-state relay Q6. The drain of power switch tube S21 and the drain of power switch tube S23 are connected to one end of clamping capacitor C6. The source of power switch tube S21, the drain of power switch tube S22, and the first tap of N3 are connected. The source of power switch tube S23, the drain of power switch tube S24, and the third tap of N3 are connected. The source of power switch tube S22 and the source of power switch tube S24 are connected to B-. Electrical equipment with a voltage requirement of 12V is connected between 12VB+ and B- of port 3.

[0080] Continue to refer to Figure 3As shown, the 48VB+ of port 4 is connected to the positive electrode of the vehicle's low-voltage 48V and one end of the solid-state relay Q7; the other end of the solid-state relay Q7 is connected to the center tap of the N4 winding of the transformer T1; the drain of the power switch tube S9 and the drain of the power switch tube S11 are connected to one end of the clamping capacitor C3; the source of the power switch tube S9, the drain of the power switch tube S10, and the first tap of N4 are connected; the source of the power switch tube S11, the drain of the power switch tube S12, and the third tap of N3 are connected; the source of the power switch tube S10 and the source of the power switch tube S12 are connected to B-; the electrical equipment with a voltage requirement of 48V is connected between 48VB+ and B- of port 4.

[0081] Continue to refer to Figure 3 As shown, the 24VB+ of port 5 is connected to the positive electrode of the vehicle's low-voltage 24V, one end of the solid-state relay Q8, and one end of the solid-state relay Q9; the other end of the solid-state relay Q8 is connected to the center tap of the N5 winding of the transformer T1; the drain of the power switch tube S17 and the drain of the power switch tube S19 are connected to one end of the clamping capacitor C5; the source of the power switch tube S17, the drain of the power switch tube S18, and the first tap of N5 are connected; the source of the power switch tube S19, the drain of the power switch tube S20, and the third tap of N5 are connected; the source of the power switch tube S18 and the source of the power switch tube S19 are connected to B-; the electrical equipment with a voltage requirement of 24V is connected between 24VB+ and B- of port 5.

[0082] Continue to refer to Figure 3 As shown, the 12V / 24VB+ of port 6 is connected to the other end of the solid-state relay Q9, the other end of the solid-state relay Q6, one end of the solid-state relay Q3, and one end of the solid-state relay Q2; the other end of the solid-state relay Q2 is connected to the center tap of the N6 winding of the transformer T1; the drain of the power switch tube S25 and the drain of the power switch tube S27 are connected to one end of the clamping capacitor C7; the source of the power switch tube S25, the drain of the power switch tube S26, one end of the solid-state relay Q4, and one end of the solid-state relay Q5 are connected; the other end of the solid-state relay Q4 and one end of the solid-state relay Q1 are connected to the first tap of N6; the other end of the solid-state relay Q1 is connected to one end of the winding N7 of the transformer T1; the other end of the solid-state relay Q5 is connected to the other end of the winding N7 of the transformer T1; the drain of the power switch tube S27, the drain of the power switch tube S28, and the third tap of N6 are connected; the source of the power switch tube S26 and the source of the power switch tube S28 are connected to B-; the electrical equipment with a voltage requirement of 12V is also connected between 12V / 24VB+ and B- of port 6. The electrical equipment with a voltage requirement of 24V is also connected between 12V / 24VB+ and B- of port 6.

[0083] It should be noted that: The central vehicle-mounted power supply system of the embodiments of the present application can continue to expand the number of ports on the basis of the above structure to meet the power consumption requirements of more controllers on the vehicle. Among them, port 6 can also continue to expand the number of turns that can be connected in series on this basis to achieve the purpose of switching between more voltage levels. The rated power ratio of port 3 and port 6 can be designed to ensure that port 3 is in the high-efficiency range within the common power range and serves as the main power port, and port 6 serves as the 12V and 24V auxiliary ports, which can quickly supplement when port 3 and port 5 fail, and can also be connected in parallel for output when the power required by the low-voltage 12V and 24V is insufficient.

[0084] In the above embodiment, the AC port is a 220V AC port, the power battery port is a high-voltage direct current transmission HVDC power battery port, and the at least two DC output ports include: a new generation of low-voltage DC LVDC DC output port of 12V, an LVDC DC output port of 48V, and an LVDC DC output port of 24V; the spare DC output port is an LVDC DC output port for realizing the switching between 12V and 24V. Such a common magnetic core vehicle-mounted power supply system can provide three voltages of 12V, 48V, and 24V, which can meet the voltage requirements of each controller on the vehicle.

[0085] In some embodiments, a voltage control method is provided. This method can be applied to the common magnetic core vehicle-mounted power supply system in the above embodiment. Refer to Figure 4 As shown, this method includes:

[0086] Step 401, receiving a vehicle power-on instruction.

[0087] Among them, the vehicle can receive a vehicle power-on instruction triggered by the user.

[0088] Step 402, controlling each port in the common magnetic core vehicle-mounted power supply system according to at least one of the first judgment result on whether the vehicle enters the charging mode, the second judgment result on whether the vehicle enters the discharging mode, and the third judgment result on whether the vehicle is in the driving state.

[0089] Among them, the vehicle can receive a charging instruction triggered by the user and enter the charging mode in response to the charging instruction.

[0090] Among them, the vehicle can receive a discharging instruction triggered by the user and enter the discharging mode in response to the discharging instruction, or the vehicle controls whether to enter the discharging mode according to the built-in program.

[0091] Among them, the vehicle can control each port in the common magnetic core vehicle-mounted power supply system according to the first judgment result on whether the vehicle enters the charging mode, the second judgment result on whether the vehicle enters the discharging mode, and the third judgment result on whether the vehicle is in the driving state.

[0092] In the above embodiments, a vehicle power-on instruction is received; according to at least one of a first determination result of whether the vehicle enters a charging mode, a second determination result of whether the vehicle enters a discharging mode, and a third determination result of whether the vehicle is in a driving state, each port in the common magnetic core vehicle-mounted power supply system is controlled. This enables controllers with different voltage requirements to work properly, improving the power supply quality and reliability.

[0093] In some embodiments, as shown in Figure 5 After receiving the vehicle power-on instruction, it is determined whether the vehicle enters the charging mode; if the vehicle enters the charging mode, the above-mentioned common magnetic core vehicle-mounted power supply system is controlled to enter Figure 6 the charging and discharging mode shown in. The solid-state relay Q10 is closed, and at the same time, the switching tubes of port 1 and port 2 are controlled to work forward to charge the power battery, and the switching tube of port 3 is controlled to be in the forward 12V output state. At this time, the energy flow is from the 220V AC port (port 1) to the HVDC power battery port (port 2) and the 12V LVDC DC output port (port 3), as shown in Figure 7 . As shown in Figure 6 and Figure 7 , in this condition, the 48V LVDC DC output port (port 4), the 24V LVDC DC output port (port 5), and the spare DC output port (port 6) are controlled to be closed.

[0094] If the vehicle does not enter the charging mode, it is determined whether the vehicle enters the discharging mode; if the vehicle enters the discharging mode, the above-mentioned common magnetic core vehicle-mounted power supply system is controlled to enter Figure 6 the charging and discharging mode shown in. The solid-state relay Q10 is still closed, and at the same time, the switching tubes of port 1 and port 2 are controlled to work in reverse to charge outward, and the switching tube of port 3 is controlled to be in the forward 12V output state. At this time, the energy flow is from the HVDC power battery port (port 2) to the 220V AC port (port 1) and the 12V LVDC DC output port (port 3), as shown in Figure 8 . As shown in Figure 6 and Figure 8 , in this condition, the 48V LVDC DC output port (port 4), the 24V LVDC DC output port (port 5), and the spare DC output port (port 6) are controlled to be closed.

[0095] If the vehicle does not enter the discharging mode, it is determined whether the vehicle is in the driving state; if the vehicle is not in the driving state, the above-mentioned common magnetic core vehicle-mounted power supply system is controlled to enter Figure 9The parking mode shown. Close the solid state Q10, and only control the forward operation of the switching tubes at port 2 and port 3. At this time, the energy flow is from the HVDC power battery port (port 2) to the 12V LVDC DC output port (port 3), as Figure 10 shown. See Figure 9 and Figure 10 . Under this condition, control the 220V AC port (port 1), the 48V LVDC DC output port (port 4), the 24V LVDC DC output port (port 5), and the spare DC output port (port 6) to be closed.

[0096] If the vehicle is in a driving state, determine whether there is electrical energy input to the vehicle's target system, that is, determine whether the power battery can provide electrical energy for the vehicle's target system. If there is no electrical energy input to the vehicle's target system, then control the above-mentioned common magnetic core vehicle-mounted power supply system to enter Figure 11 the fault mode shown. Close the solid state relays Q8 and Q10, and at the same time control port 3 to discharge to port 5 to provide power assistance for the vehicle's 24V steering system (that is, the electrical equipment at port 5). At this time, the energy flow is from the 12V LVDC DC output port (port 3) to the 24V LVDC DC output port (port 5), as Figure 12 shown. And generate a prompt message to prompt the user that the vehicle has a fault and pull over. See Figure 11 and Figure 12 . Under this condition, control the 220V AC port (port 1), the HVDC power battery port (port 2), the 48V LVDC DC output port (port 4), and the spare DC output port (port 6) to be closed.

[0097] If there is electrical energy input to the vehicle's target system, determine whether the power of the electrical equipment connected to the 12V LVDC DC output port is greater than the power of the 12V LVDC DC output port and the power of the spare DC output port; if so, control the above-mentioned common magnetic core vehicle-mounted power supply system to enter Figure 13 the parallel mode shown. Close the solid state relays Q2, Q4, Q6, Q7, Q8, and Q10. At the same time, control the switching tubes at ports 2, 3, and 6 to output 12V in the forward direction, control port 4 to be in the 48V output state to ensure power supply for the active suspension (that is, the electrical equipment at port 4), and control port 5 to be in the 24V output state to ensure power supply for the electronic control EPS system (that is, the electrical equipment at port 5). At this time, the energy flow is from the HVDC power battery port (port 2) to the 12V LVDC DC output port (port 3), the 48V LVDC DC output port (port 4), the 24V LVDC DC output port (port 5), and the spare DC output port (port 6), as Figure 14 shown. SeeFigure 13 and Figure 14 under this condition, control the 220V AC port (port 1) to close.

[0098] If the power of the electrical device connected to the 12V LVDC DC output port is less than or equal to the power of the 12V LVDC DC output port, or less than or equal to the power of the backup DC output port, determine whether the efficiency of the 12V LVDC DC output port is greater than the efficiency of the backup DC output port for the electrical device connected to the 12V LVDC DC output port; if the efficiency of the 12V LVDC DC output port is less than or equal to the efficiency of the backup DC output port, then control the above-mentioned common-core vehicle-mounted power supply system to enter Figure 15 the 12V auxiliary port output mode shown in the figure, close the solid-state relays Q2, Q4, Q7, Q8, control the switching tubes of port 2 and port 3 to be in the forward 12V output state, control port 4 to be in the 48V output state to ensure power supply for the active suspension, control port 5 to be in the 24V output state to ensure power supply for the electric power steering (EPS) system. At this time, the energy flow is from the HVDC power battery port (port 2) to the 48V LVDC DC output port (port 4), the 24V LVDC DC output port (port 5), and the backup DC output port (port 6), as Figure 16 shown in the figure. See Figure 15 and Figure 16 under this condition, control the 220V AC port (port 1) and the 12V LVDC DC output port (port 3) to close.

[0099] Among them, the operating voltage of the vehicle target system is greater than the preset value, and the vehicle target system can also be called the vehicle high-voltage system.

[0100] If the efficiency of the 12V LVDC DC output port is greater than the efficiency of the backup DC output port, determine whether the efficiency of the 24V LVDC DC output port is greater than the efficiency of the backup DC output port for the electrical device connected to the 24V LVDC DC output port; if so, then control the above-mentioned common-core vehicle-mounted power supply system to enter Figure 17 the main driving working mode shown in the figure, close the solid-state relays Q7, Q8, Q10, control the switching tubes of port 2 and port 3 to be in the forward 12V output state, control port 4 to be in the 48V output state to ensure power supply for the active suspension, control port 5 to be in the 24V output state to ensure power supply for the electric power steering (EPS) system. At this time, the energy flow is from the HVDC power battery port (port 2) to the 12V LVDC DC output port (port 3), the 48V LVDC DC output port (port 4), and the 24V LVDC DC output port (port 5), asFigure 18 as shown. Refer to Figure 17 and Figure 18 , in this working condition, control the 220V AC port (port 1) and the standby DC output port (port 6) to be closed. Otherwise, control the above-mentioned common-core vehicle-mounted power supply system to enter Figure 19 the 24V auxiliary port output mode shown in, close the solid-state relays Q1, Q3, Q5, Q7, Q9, Q10, control the switching transistors of port 2 and port 3 to be in the forward 12V output state, control port 4 to be in the 48V output state to ensure power supply for the active suspension, 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 DC output port (port 3), the 48V LVDC DC output port (port 4), and the standby DC output port (port 6), as Figure 20 shown. Refer to Figure 19 and Figure 20 , in this working condition, control the 220V AC port (port 1) and the 24V LVDC DC output port (port 5) to be closed.

[0101] In the above embodiments, an advanced central vehicle-mounted power supply system is proposed, which can realize the simultaneous output of different platform voltage levels and the conversion of AC and DC voltages to meet the load requirements of different voltages. It is proposed to calibrate the transformer turns ratio of a certain path or several output ports through the use of solid-state relays to achieve the switching between different turns ratios, so as to meet the switching of a single free port between different voltage platforms, change the output voltage range, and play a role of dual-channel redundancy. An advanced central vehicle-mounted power supply system control strategy is proposed to realize the intelligent distribution of power energy in the charging mode, discharging mode, normal driving mode, and fault driving mode, and improve the reliability of the whole vehicle.

[0102] It should be understood that although the steps in the flowcharts involved in the above-mentioned embodiments are sequentially shown according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless there is a clear description in this article, the execution of these steps has no strict order limit, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily executed 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 executed alternately or alternately with at least a part of other steps or steps in other steps.

[0103] In an exemplary embodiment, an electronic device is provided, including a memory and a processor. A computer program is stored in the memory. When the processor executes the computer program, the following steps are implemented:

[0104] Receive a vehicle power-on instruction;

[0105] Control each port in the common magnetic core vehicle power supply system according to at least one of a first determination result on whether the vehicle enters a charging mode, a second determination result on whether the vehicle enters a discharging mode, and a third determination result on whether the vehicle is in a driving state.

[0106] In one embodiment, when the processor executes the computer program, the following steps are further implemented:

[0107] Determine whether the vehicle enters a charging mode;

[0108] If the vehicle enters a charging mode, control the energy flow to flow from the 220V AC port to the HVDC power battery port and the 12V LVDC DC output port, and control the 48V LVDC DC output port, the 24V LVDC DC output port, and the spare DC output port to be closed;

[0109] If the vehicle does not enter a charging mode, determine whether the vehicle enters a discharging mode;

[0110] If the vehicle enters a discharging mode, control the energy flow to flow from the HVDC power battery port to the 220V AC port and the 12V LVDC DC output port, and control the 48V LVDC DC output port, the 24V LVDC DC output port, and the spare DC output port to be closed.

[0111] In one embodiment, when the processor executes the computer program, the following steps are further implemented:

[0112] If the vehicle does not enter a discharging mode, determine whether the vehicle is in a driving state;

[0113] If the vehicle is not in a driving state, control the energy flow to flow from the HVDC power battery port to the 12V LVDC DC output port, and control the 220V AC port, the 48V LVDC DC output port, the 24V LVDC DC output port, and the spare DC output port to be closed;

[0114] If the vehicle is in a driving state, determine whether there is electrical energy input to the vehicle's target system;

[0115] If there is no electrical energy input to the vehicle target system, control the energy flow to flow from the 12V LVDC DC output port to the 24V LVDC DC output port, and control the 220V AC port, the HVDC power battery port, the 48V LVDC DC output port, and the spare DC output port to be closed; and generate a prompt message to prompt the user that the vehicle has a fault and pull over.

[0116] In one embodiment, when the processor executes the computer program, the following steps are further implemented:

[0117] If there is electrical energy input to the vehicle target system, determine whether the power of the electrical equipment connected to the 12V LVDC DC output port is greater than the power of the 12V LVDC DC output port and the power of the spare DC output port;

[0118] If so, control the energy flow to flow from the HVDC power battery port to the 12V LVDC DC output port, the 48V LVDC DC output port, the 24V LVDC DC output port, and the spare DC output port, and control the 220V AC port to be closed;

[0119] If it is less than or equal to the power of the 12V LVDC DC output port, or less than or equal to the power of the spare DC output port, determine whether the efficiency of the 12V LVDC DC output port is greater than the efficiency of the spare DC output port for the electrical equipment connected to the 12V LVDC DC output port;

[0120] If the efficiency of the 12V LVDC DC output port is less than or equal to the efficiency of the spare DC output port, control the energy flow to flow from the HVDC power battery port to the 48V LVDC DC output port, the 24V LVDC DC output port, and the spare DC output port, and control the 220V AC port and the 12V LVDC DC output port to be closed.

[0121] In one embodiment, when the processor executes the computer program, the following steps are further implemented:

[0122] If the efficiency of the 12V LVDC DC output port is greater than the efficiency of the spare DC output port, determine whether the efficiency of the 24V LVDC DC output port is greater than the efficiency of the spare DC output port for the electrical equipment connected to the 24V LVDC DC output port;

[0123] If so, control the energy flow to flow from the HVDC power battery port to the 12V LVDC DC output port, the 48V LVDC DC output port, and the 24V LVDC DC output port, and control the 220V AC port and the spare DC output port to be closed;

[0124] If not, control the energy flow to flow from the HVDC power battery port to the 12V LVDC DC output port, the 48V LVDC DC output port, and the spare DC output port; and control the 220V AC port and the 24V LVDC DC output port to be closed.

[0125] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the following steps are implemented:

[0126] Receive a vehicle power-on command;

[0127] Control each port in the common magnetic core vehicle power supply system according to at least one of a first judgment result on whether the vehicle enters a charging mode, a second judgment result on whether the vehicle enters a discharging mode, and a third judgment result on whether the vehicle is in a driving state.

[0128] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0129] Judge whether the vehicle enters a charging mode;

[0130] If the vehicle enters a charging mode, control the energy flow to flow from the 220V AC port to the HVDC power battery port and the 12V LVDC DC output port, and control the 48V LVDC DC output port, the 24V LVDC DC output port, and the spare DC output port to be closed;

[0131] If the vehicle does not enter a charging mode, judge whether the vehicle enters a discharging mode;

[0132] If the vehicle enters a discharging mode, control the energy flow to flow from the HVDC power battery port to the 220V AC port and the 12V LVDC DC output port, and control the 48V LVDC DC output port, the 24V LVDC DC output port, and the spare DC output port to be closed.

[0133] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented:

[0134] If the vehicle does not enter a discharging mode, judge whether the vehicle is in a driving state;

[0135] If the vehicle is not in a driving state, control the energy flow to flow from the HVDC power battery port to the 12V LVDC DC output port, and control the 220V AC port, the 48V LVDC DC output port, the 24V LVDC DC output port, and the spare DC output port to be closed;

[0136] If the vehicle is in a driving state, determine whether there is electrical energy input to the vehicle's target system;

[0137] If there is no electrical energy input to the vehicle's target system, control the energy flow to flow from the 12V LVDC DC output port to the 24V LVDC DC output port, and control the 220V AC port, the HVDC power battery port, the 48V LVDC DC output port, and the spare DC output port to be closed; and generate a prompt message to prompt the user that the vehicle has a fault and pull over.

[0138] In one embodiment, when the computer program is executed by the processor, the following steps are further implemented:

[0139] If there is electrical energy input to the vehicle's target system, determine whether the power of the electrical equipment connected to the 12V LVDC DC output port is greater than the power of the 12V LVDC DC output port and the power of the spare DC output port;

[0140] If so, control the energy flow to flow from the HVDC power battery port to the 12V LVDC DC output port, the 48V LVDC DC output port, the 24V LVDC DC output port, and the spare DC output port, and control the 220V AC port to be closed;

[0141] If it is less than or equal to the power of the 12V LVDC DC output port, or less than or equal to the power of the spare DC output port, determine whether the efficiency of the 12V LVDC DC output port for the electrical equipment connected to the 12V LVDC DC output port is greater than the efficiency of the spare DC output port;

[0142] If the efficiency of the 12V LVDC DC output port is less than or equal to the efficiency of the spare DC output port, control the energy flow to flow from the HVDC power battery port to the 48V LVDC DC output port, the 24V LVDC DC output port, and the spare DC output port, and control the 220V AC port and the 12V LVDC DC output port to be closed.

[0143] In one embodiment, when the computer program is executed by the processor, the following steps are further implemented:

[0144] If the efficiency of the 12V LVDC DC output port is greater than that of the backup DC output port, determine whether the efficiency of the 24V LVDC DC output port is greater than that of the backup DC output port for the electrical equipment connected to the 24V LVDC DC output port;

[0145] If so, control the energy flow to flow from the HVDC power battery port to the 12V LVDC DC output port, the 48V LVDC DC output port, and the 24V LVDC DC output port, and control the 220V AC port and the backup DC output port to be closed;

[0146] If not, control the energy flow to flow from the HVDC power battery port to the 12V LVDC DC output port, the 48V LVDC DC output port, and the backup DC output port; and control the 220V AC port and the 24V LVDC DC output port to be closed.

[0147] In one embodiment, a computer program product is provided, including a computer program, which when executed by a processor implements the following steps:

[0148] Receive a vehicle power-on command;

[0149] Control each port in the common magnetic core vehicle-mounted power supply system according to at least one of the first judgment result of whether the vehicle enters the charging mode, the second judgment result of whether the vehicle enters the discharging mode, and the third judgment result of whether the vehicle is in the driving state.

[0150] In one embodiment, when the computer program is executed by a processor, it also implements the following steps:

[0151] Judge whether the vehicle enters the charging mode;

[0152] If the vehicle enters the charging mode, control the energy flow to flow from the 220V AC port to the HVDC power battery port and the 12V LVDC DC output port, and control the 48V LVDC DC output port, the 24V LVDC DC output port, and the backup DC output port to be closed;

[0153] If the vehicle does not enter the charging mode, judge whether the vehicle enters the discharging mode;

[0154] If the vehicle enters the discharge mode, control the energy flow to flow from the HVDC power battery port to the 220V AC port and the 12V LVDC DC output port, and control the 48V LVDC DC output port, the 24V LVDC DC output port, and the spare DC output port to be closed.

[0155] In one embodiment, when the computer program is executed by the processor, the following steps are further implemented:

[0156] If the vehicle does not enter the discharge mode, determine whether the vehicle is in a driving state;

[0157] If the vehicle is not in a driving state, control the energy flow to flow from the HVDC power battery port to the 12V LVDC DC output port, and control the 220V AC port, the 48V LVDC DC output port, the 24V LVDC DC output port, and the spare DC output port to be closed;

[0158] If the vehicle is in a driving state, determine whether there is electrical energy input to the vehicle's target system;

[0159] If there is no electrical energy input to the vehicle's target system, control the energy flow to flow from the 12V LVDC DC output port to the 24V LVDC DC output port, and control the 220V AC port, the HVDC power battery port, the 48V LVDC DC output port, and the spare DC output port to be closed; and generate a prompt message to prompt the user that the vehicle has a fault and pull over.

[0160] In one embodiment, when the computer program is executed by the processor, the following steps are further implemented:

[0161] If there is electrical energy input to the vehicle's target system, determine whether the power of the electrical equipment connected to the 12V LVDC DC output port is greater than the power of the 12V LVDC DC output port and the power of the spare DC output port;

[0162] If so, control the energy flow to flow from the HVDC power battery port to the 12V LVDC DC output port, the 48V LVDC DC output port, the 24V LVDC DC output port, and the spare DC output port, and control the 220V AC port to be closed;

[0163] If it is less than or equal to the power of the 12V LVDC DC output port, or less than or equal to the power of the spare DC output port, determine whether the efficiency of the 12V LVDC DC output port is greater than the efficiency of the spare DC output port for the electrical equipment connected to the 12V LVDC DC output port;

[0164] If the efficiency of the 12V LVDC DC output port is less than or equal to the efficiency of the backup DC output port, control the energy flow to flow from the HVDC power battery port to the 48V LVDC DC output port, the 24V LVDC DC output port, and the backup DC output port, and control the 220V AC port and the 12V LVDC DC output port to be closed.

[0165] In one embodiment, when the computer program is executed by the processor, the following steps are further implemented:

[0166] If the efficiency of the 12V LVDC DC output port is greater than the efficiency of the backup DC output port, determine whether the efficiency of the 24V LVDC DC output port is greater than the efficiency of the backup DC output port for the electrical equipment connected to the 24V LVDC DC output port;

[0167] If so, control the energy flow to flow from the HVDC power battery port to the 12V LVDC DC output port, the 48V LVDC DC output port, the 24V LVDC DC output port, and control the 220V AC port and the backup DC output port to be closed;

[0168] If not, control the energy flow to flow from the HVDC power battery port to the 12V LVDC DC output port, the 48V LVDC DC output port, the backup DC output port; and control the 220V AC port and the 24V LVDC DC output port to be closed.

[0169] Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above methods. Among them, any reference to a memory, database, or other medium used in the embodiments provided in the present application 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), magnetoresistive 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 be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc. The databases involved in the embodiments provided in the present application can include at least one of relational databases and non-relational databases. Non-relational databases can include distributed databases based on blockchain, etc., without limitation. The processors involved in the embodiments provided in the present application can be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, data processing logics based on quantum computing, artificial intelligence (AI) processors, etc., without limitation.

[0170] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, 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, it should be considered to be within the scope recorded in the present application.

[0171] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the patent scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims

1. A common magnetic core vehicle-mounted power system, characterized in that: include: An AC port, a power battery port, at least two DC output ports and a spare DC output port that share the same magnetic core, different DC output ports output different voltages, and the spare DC output port is used to output at least two voltages; the voltage output by the at least two DC output ports includes the at least two voltages; the AC port is connected to the mains, the power battery port is connected to the power battery, and the at least two DC output ports and the spare DC output port are respectively connected to electrical equipment with matching voltage requirements; The AC port is a 220V AC port, the power battery port is a high-voltage direct current transmission HVDC power battery port, and the at least two DC output ports include: a 12V new generation low-voltage direct current LVDC direct current output port, a 48V LVDC direct current output port, and a 24V LVDC direct current output port; the standby DC output port is a LVDC direct current output port that realizes switching between 12V and 24V; The 12V LVDC direct current output port includes: a solid-state relay Q10, a clamping capacitor C6, a winding N3, a power switch tube S21, a power switch tube S22, a power switch tube S23 and a power switch tube S24; the positive electrode of the 12V LVDC direct current output port is connected to the positive electrode of the low-voltage 12V of the vehicle and one end of the solid-state relay Q10; the negative electrode of the 12V LVDC direct current output port is connected to the vehicle body; the other end of the solid-state relay Q10 is connected to the center tap of the winding N3 and one end of the solid-state relay Q6; the drain electrode, The drain of the power switch tube S23 is connected to one end of the clamp capacitor C6; the source of the power switch tube S21, the drain of the power switch tube S22, and the first tap of the winding N3 are connected; the source of the power switch tube S23, the drain of the power switch tube S24, and the third tap of the winding N3 are connected; the source of the power switch tube S22, the source of the power switch tube S24, and the negative electrode of the 12V LVDC direct current output port are connected; the electrical equipment with a voltage requirement of 12V is connected between the positive and negative electrodes of the 12V LVDC direct current output port; The standby DC output port includes: solid-state relay Q1, solid-state relay Q2, solid-state relay Q3, solid-state relay Q4, solid-state relay Q5, solid-state relay Q6, winding N6, winding N7, power switch tube S25, power switch tube S26, power switch tube S27, power switch tube S28 and clamping capacitor C7; the positive electrode of the standby DC output port is respectively connected to the solid-state relay Q9, the other end of the solid-state relay Q6, one end of the solid-state relay Q3, and one end of the solid-state relay Q2; the other end of the solid-state relay Q2 is connected to the center tap of the winding N6; the drain of the power switch tube S25 and the drain of the power switch tube S27 are connected to one end of the clamping capacitor C7; the source of the power switch tube S25 and the source of the power switch tube S26 are connected to the source of the power switch tube S28. The drain of the solid-state relay Q4, one end of the solid-state relay Q5 are connected; the other end of the solid-state relay Q4 and one end of the solid-state relay Q1 are connected to the first tap of the winding N6; the other end of the solid-state relay Q1 is connected to one end of the winding N7; the other end of the solid-state relay Q5 is connected to the other end of the winding N7; the source level of the power switch tube S27, the drain of the power switch tube S28, and the third tap of the winding N6 are connected; the source level of the power switch tube S26 and the source level of the power switch tube S28 are connected to the negative electrode of the standby DC output port; the electrical equipment with a voltage requirement of 12V is also connected between the positive and negative electrodes of the standby DC output port; the electrical equipment with a voltage requirement of 24V is also connected between the positive and negative electrodes of the standby DC output port; The rated power ratio design of the 12V LVDC direct current output port and the backup direct current output port meets the following requirements: the 12V LVDC direct current output port is in the high-efficiency range within the commonly used power range and serves as the main power port; the backup direct current output port serves as a 12V and 24V auxiliary port, which can be quickly supplemented when the 12V LVDC direct current output port fails, and output in parallel when the required power of 12V is insufficient.

2. A voltage control method, characterized in that: Applied to the system of claim 1, the method comprises: Receive vehicle power-on command; Controlling each port in the common magnetic core vehicle power supply system according to at least one of a first judgment result of whether the vehicle enters a charging mode, a second judgment result of whether the vehicle enters a discharging mode, and a third judgment result of whether the vehicle is in a driving state; The controlling of each port in the common magnetic core vehicle power supply system according to at least one of a first judgment result of whether the vehicle enters a charging mode, a second judgment result of whether the vehicle enters a discharging mode, and a third judgment result of whether the vehicle is in a driving state comprises: Determine whether the vehicle has entered the charging mode; If the vehicle enters the charging mode, the energy flow is controlled to flow from the 220V AC port to the HVDC power battery port and the 12V LVDC direct current output port, and the 48V LVDC direct current output port, the 24V LVDC direct current output port and the standby direct current output port are controlled to be closed; the energy flow is controlled to flow from the 220V AC port to the HVDC power battery port and the 12V LVDC direct current output port, including: closing the solid-state relay Q10, and simultaneously controlling the switch tubes in the 220V AC port and the high-voltage direct current transmission HVDC power battery port to work forward to charge the power battery, and controlling the switch tube in the 12V LVDC direct current output port to be in a forward 12V output state, so that the energy flow flows from the 220V AC port to the HVDC power battery port and the 12V LVDC direct current output port; If the vehicle has not entered the charging mode, determine whether the vehicle has entered the 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 direct current output port, and the 48V LVDC direct current output port, the 24V LVDC direct current output port and the standby direct current output port are controlled to be closed; When the vehicle has not entered the discharge mode, is in a driving state, and has power input to the vehicle target system, determines whether the power of the electrical equipment connected to the 12V LVDC direct current output port is greater than the power of the 12V LVDC direct current output port and the power of the standby direct current output port; If so, control the energy flow from the HVDC power battery port to the 12V LVDC direct current output port, the 48V LVDC direct current output port, the 24V LVDC direct current output port and the standby direct current output port, and control the 220V AC port to be closed; the controlling the energy flow from the HVDC power battery port to the 12V LVDC direct current output port, the 48V LVDC direct current output port, the 24V LVDC direct current output port and the standby direct current output port includes: closing solid-state relay Q2, solid-state relay Q4, solid-state relay Q6, solid-state relay Q7, solid-state relay Q8, and solid-state relay Q10; and at the same time, control the switch tubes in the HVDC power battery port, the 12V LVDC direct current output port, and the standby direct current output port to output 12V in the forward direction, control the 48V LVDC direct current output port to be in a 48V output state, and control the 24V LVDC direct current output port to be in a 24V output state, so that the common magnetic core on-board power system enters the parallel mode.

3. The method according to claim 2, characterized in that The method further comprises: If the vehicle has not entered the discharge mode, determine whether the vehicle is in a driving state; If the vehicle is not in a driving state, control the energy flow from the HVDC power battery port to the 12V LVDC direct current output port, and control the 220V AC port, the 48V LVDC direct current output port, the 24V LVDC direct current output port and the standby direct current output port to be closed; If the vehicle is in a driving state, determining whether there is power input to the vehicle target system, and the operating voltage of the vehicle target system is greater than a preset value; If there is no power input to the target system of the vehicle, the energy flow is controlled to flow from the 12V LVDC direct current output port to the 24V LVDC direct current output port, and the 220V AC port, the HVDC power battery port, the 48V LVDC direct current output port, and the standby DC output port are controlled to be closed; and a prompt message is generated to prompt the user to pull over when a vehicle failure occurs.

4. The method according to claim 3, characterized in that The method further comprises: If it is less than or equal to the power of the 12V LVDC direct current output port, or less than or equal to the power of the standby direct current output port, determine whether the efficiency of the 12V LVDC direct current output port is greater than the efficiency of the standby direct current output port for the electrical device connected to the 12V LVDC direct current output port; If the efficiency of the 12V LVDC direct current output port is less than or equal to the efficiency of the backup direct current output port, the energy flow is controlled from the HVDC power battery port to the 48V LVDC direct current output port, the 24V LVDC direct current output port and the backup direct current output port, and the 220V AC port and the 12V LVDC direct current output port are controlled to be closed.

5. The method according to claim 4, characterized in that The method further comprises: If the efficiency of the 12V LVDC direct current output port is greater than the efficiency of the standby direct current output port, determine whether the efficiency of the 24V LVDC direct current output port is greater than the efficiency of the standby direct current output port for the electrical device connected to the 24V LVDC direct current output port; If yes, control the energy flow from the HVDC power battery port to the 12V LVDC direct current output port, the 48V LVDC direct current output port, and the 24V LVDC direct current output port, and control the 220V AC port and the standby DC output port to be closed; If not, control the energy flow from the HVDC power battery port to the 12V LVDC direct current output port, the 48V LVDC direct current output port, and the standby direct current output port; and control the 220V AC port and the 24V LVDC direct current output port to be closed.

6. An electronic device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 2 to 5 are implemented.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 2 to 5 are implemented.

8. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 2 to 5 are implemented.

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