Power supply method and device, electronic equipment and storage medium

Abstract

The embodiment of the invention provides a power supply method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining the state of a pantograph, and enabling the state of the pantograph to be a rising state or a falling state; according to the state of the pantograph, a power supply module of the vehicle system is determined, and the power supply module comprises one or more of the pantograph, an energy storage device, a power generation device and a range extender; and supplying power to the vehicle system according to the power supply module. According to the method, the power supply strategy is dynamically planned by accurately monitoring the state of the pantograph, and fuel consumption is greatly reduced.

Description

Technical Field

[0001] The present application relates to the field of transportation, and in particular to a power supply method, device, electronic device and storage medium. Background Art

[0002] In the field of transportation, in order to reduce fuel pollution and improve transportation efficiency, more and more vehicles need to be replaced by new energy or converted to hybrid power to achieve sustainable development.

[0003] In related technologies, the hybrid power supply system of the train includes: an energy storage device and a diesel generator. The power battery and the diesel generator are connected to the load through a four-quadrant rectifier module to realize the power supply to the relevant loads through the hybrid power of the energy storage device and the power generation device.

[0004] In the above-mentioned related technologies, in order to maintain the voltage of the hybrid power supply system, even if the power battery has sufficient power, the diesel engine is often forced to start due to the minimum operating power limit, resulting in fuel waste. Summary of the Invention

[0005] An embodiment of the present application provides a power supply method to further reduce fuel consumption.

[0006] In a first aspect, an embodiment of the present application provides a power supply method, which is applied to a vehicle system, wherein the vehicle system includes: a pantograph, an energy storage device, a power generation device, and a range extender, wherein:

[0007] Acquire the state of the pantograph, where the state of the pantograph is a raised state or a lowered state;

[0008] determining a power supply module of the vehicle system according to the state of the pantograph, the power supply module including one or more of a pantograph, an energy storage device, a power generation device, and a range extender;

[0009] According to the power supply module, power is supplied to the vehicle system.

[0010] In some embodiments, determining the power supply module of the vehicle system according to the state of the pantograph includes:

[0011] When the state of the pantograph is a raised state, determining that the power supply module is the pantograph;

[0012] When the pantograph is in a descending state, a first amount of electricity of the energy storage device and a first amount of oil of the power generation device are obtained, and the power supply module is determined according to the first amount of electricity and the first amount of oil.

[0013] In some embodiments, determining the power supply module according to the first electrical quantity and the first fuel quantity includes:

[0014] When the first electrical quantity is greater than or equal to a first threshold, determining that the power supply module is the energy storage device;

[0015] When the first electrical quantity is less than the first threshold, the power supply module is determined to be the range extender, and the range extender charges the energy storage device.

[0016] In some embodiments, determining that the power supply module is the range extender includes:

[0017] When the first power level is greater than or equal to a second threshold, determining that the power supply module is the range extender;

[0018] When the first electrical quantity is less than the second threshold value and the first oil quantity is greater than or equal to the third threshold value, the power supply module is determined to be the power generation device, and the power generation device charges the energy storage device; when the first oil quantity is less than the third threshold value, the power supply module is determined to be the energy storage device and the power generation device.

[0019] In some embodiments, the vehicle system includes a load; and determining the power supply module according to the first electrical quantity and the first fuel quantity includes:

[0020] Obtaining the power corresponding to the load;

[0021] The power supply module is determined according to the first electrical quantity, the first oil quantity, and the power.

[0022] In some embodiments, determining the power supply module according to the first electrical quantity, the first fuel quantity, and the power includes:

[0023] When the first electrical quantity is greater than or equal to a fourth threshold, determining that the power supply module is the energy storage device;

[0024] When the first electrical quantity is less than the fourth threshold value and the first electrical quantity is greater than or equal to a fifth threshold value, determining the power supply module according to the power and the first oil quantity;

[0025] When the first electrical quantity is less than the fifth threshold value, the first oil quantity is greater than or equal to the sixth threshold value, and the power supply module is determined to be the power generation device, and the power generation device charges the energy storage device; when the first oil quantity is less than the sixth threshold value, the power supply module is determined to be the energy storage device and the power generation device.

[0026] In some embodiments, determining the power supply module according to the power and the first oil level includes:

[0027] When the power is less than or equal to a seventh threshold, determining that the power supply module includes the range extender and the energy storage device;

[0028] When the power is greater than or equal to the seventh threshold, it is determined that the power supply module is the energy storage device and the power generation device, and the power provided by the power generation device is associated with the first oil level.

[0029] In a second aspect, an embodiment of the present application provides a power supply device, including:

[0030] An acquisition module, configured to acquire a state of the pantograph, wherein the state of the pantograph is a raised state or a lowered state;

[0031] a determination module, configured to determine a power supply module of the vehicle system according to a state of the pantograph, the power supply module including one or more of the pantograph, the energy storage device, the power generation device, and the range extender;

[0032] A power supply device is used to supply power to the vehicle system according to the power supply module.

[0033] In some embodiments, the determining module is specifically configured to:

[0034] When the state of the pantograph is a raised state, determining that the power supply module is the pantograph;

[0035] When the pantograph is in a descending state, a first amount of electricity of the energy storage device and a first amount of oil of the power generation device are obtained, and the power supply module is determined according to the first amount of electricity and the first amount of oil.

[0036] In some embodiments, the determining module is specifically configured to:

[0037] When the first electrical quantity is greater than or equal to a first threshold, determining that the power supply module is the energy storage device;

[0038] When the first electrical quantity is less than the first threshold, the power supply module is determined to be the range extender, and the range extender charges the energy storage device.

[0039] In some embodiments, the determining module is specifically configured to:

[0040] When the first power level is greater than or equal to a second threshold, determining that the power supply module is the range extender;

[0041] When the first electrical quantity is less than the second threshold value and the first oil quantity is greater than or equal to the third threshold value, the power supply module is determined to be the power generation device, and the power generation device charges the energy storage device; when the first oil quantity is less than the third threshold value, the power supply module is determined to be the energy storage device and the power generation device.

[0042] In some embodiments, the vehicle system includes a load; in some embodiments, the determination module is specifically configured to:

[0043] Obtaining the power corresponding to the load;

[0044] The power supply module is determined according to the first electrical quantity, the first oil quantity, and the power.

[0045] In some embodiments, the determining module is specifically configured to:

[0046] When the first electrical quantity is greater than or equal to a fourth threshold, determining that the power supply module is the energy storage device;

[0047] When the first electrical quantity is less than the fourth threshold value and the first electrical quantity is greater than or equal to a fifth threshold value, determining the power supply module according to the power and the first oil quantity;

[0048] When the first electrical quantity is less than the fifth threshold value, the first oil quantity is greater than or equal to the sixth threshold value, and the power supply module is determined to be the power generation device, and the power generation device charges the energy storage device; when the first oil quantity is less than the sixth threshold value, the power supply module is determined to be the energy storage device and the power generation device.

[0049] In some embodiments, the determining module is specifically configured to:

[0050] When the power is less than or equal to a seventh threshold, determining that the power supply module includes the range extender and the energy storage device;

[0051] When the power is greater than or equal to a seventh threshold, it is determined that the power supply module is the energy storage device and the power generation device, and the amount of electricity provided by the power generation device is associated with the first oil amount.

[0052] In a third aspect, an embodiment of the present application provides an electronic device, comprising: a memory, a processor;

[0053] The memory stores computer-executable instructions;

[0054] The processor executes the computer-executable instructions stored in the memory, so that the processor executes the above first aspect and / or various possible implementations of the first aspect.

[0055] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the first aspect above and / or various possible implementation methods of the first aspect.

[0056] In a fifth aspect, an embodiment of the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the above first aspect and / or various possible implementation methods of the first aspect.

[0057] The embodiments of the present application provide a power supply method, device, electronic device and storage medium, which obtain the state of the pantograph, which is either raised or lowered; determine the power supply module of the vehicle system according to the state of the pantograph, which includes one or more of a pantograph, an energy storage device, a power generation device and a range extender; and supply power to the vehicle system according to the power supply module. In the above method, when the pantograph is in the raised state, the overhead contact network is preferentially used for power supply, so that the range extender is in a completely shut down state, avoiding the fuel loss caused by the no-load operation of the diesel generator in the related art; after the pantograph is in the lowered state, the electric energy stored in the energy storage device is preferentially used to power the vehicle, and the range extender and the power generation device are started on demand only when the energy storage is insufficient. By accurately monitoring the state of the pantograph to dynamically plan the power supply strategy, a significant reduction in fuel consumption is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0059] Figure 1 A schematic diagram of the structure of a vehicle system provided in an embodiment of the present application;

[0060] Figure 2 A schematic diagram of a power supply method according to an embodiment of the present invention;

[0061] Figure 3 A schematic diagram of the structure of a high-voltage conversion control box provided in an embodiment of the present application;

[0062] Figure 4 Schematic diagram of the process of determining the power supply module provided in the embodiment of the present application Figure 1 ;

[0063] Figure 5 Schematic diagram of the process of determining the power supply module provided in the embodiment of the present application Figure 2 ;

[0064] Figure 6 A schematic diagram of the structure of the vehicle system provided in the embodiment of the present application Figure 2 ;

[0065] Figure 7 A schematic diagram of the structure of a power supply device provided in an embodiment of the present application;

[0066] Figure 8 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0067] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0068] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0069] In the field of transportation, in order to reduce fuel pollution and improve transportation efficiency, more and more vehicles need to be replaced by new energy or converted to hybrid power to achieve sustainable development.

[0070] In related technologies, the hybrid power supply system of the train includes: an energy storage device and a diesel generator. The power battery and the diesel generator are connected to the load through a four-quadrant rectifier module to realize the power supply to the relevant loads through the hybrid power of the energy storage device and the power generation device.

[0071] In the above-mentioned related technologies, in order to maintain the voltage of the hybrid power supply system, even if the power battery has sufficient power, the diesel engine is often forced to start due to the minimum operating power limit, resulting in fuel waste.

[0072] The power supply method provided in the present application obtains the state of the pantograph, which is either raised or lowered; determines the power supply module of the vehicle system according to the state of the pantograph, which includes one or more of a pantograph, an energy storage device, a power generation device, and a range extender; and supplies power to the vehicle system according to the power supply module. In the above method, when the pantograph is in the raised state, the overhead contact network is preferentially used for power supply, so that the range extender is in a completely shut down state, thereby avoiding the fuel loss caused by the no-load operation of the diesel generator in the related art; after the pantograph is in the lowered state, the electric energy stored in the energy storage device is preferentially used to power the vehicle, and the range extender and the power generation device are started on demand only when the energy storage is insufficient. By accurately monitoring the state of the pantograph to dynamically plan the power supply strategy, a significant reduction in fuel consumption is achieved.

[0073] The following specific embodiments describe in detail the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0074] Figure 1 A schematic diagram of the structure of the vehicle system provided in the embodiment of the present application Figure 1 ,like Figure 1 As shown, the vehicle system includes: a pantograph, an energy storage device, a power generation device, a DC conversion controller, a high-voltage conversion control box, a range extender, and a load.

[0075] The pantograph is connected to the first end of the first transfer switch of the high-voltage conversion control box via a DC conversion controller. The power generation device is connected to the first end of the second transfer switch of the high-voltage conversion control box via a DC conversion controller. The energy storage device is connected to the first end of the third transfer switch of the high-voltage conversion control box. The second end of the first transfer switch, the second end of the second transfer switch, and the second end of the third transfer switch are connected to the output end of the high-voltage conversion control box. The load is connected to the output end of the high-voltage conversion control box. The load is also connected to the range extender.

[0076] A DC conversion controller is used to convert the electric energy of the first voltage output by the pantograph into the electric energy of the second voltage, and provide the electric energy of the second voltage to the load.

[0077] The first voltage ranges from 1000 V to 1800 V, for example. The second voltage is 800 V, for example.

[0078] The DC conversion controller is further used to convert the electric energy of the third voltage output by the power generation device into the electric energy of the second voltage, and provide the electric energy of the second voltage to the load.

[0079] The third voltage is 1400V, for example.

[0080] Figure 2 A schematic diagram of a power supply method according to an embodiment of the present invention is shown in FIG. Figure 2 As shown, the method includes:

[0081] S201. Obtain the status of the pantograph.

[0082] The execution subject of the embodiment of the present application is a terminal device on a vehicle.

[0083] In some embodiments, the vehicle can be a subway, light rail, or new energy vehicle.

[0084] A pantograph is an electrical device installed on the roof of a vehicle that draws power from the catenary to the vehicle's systems. The pantograph, through contact with the catenary, directs the power from the catenary to the vehicle's systems.

[0085] The states of the pantograph include raised state and lowered state.

[0086] The raised state indicates that the pantograph is in contact with the overhead line. When the pantograph is in the raised state, the vehicle system can obtain power from the overhead line through the pantograph.

[0087] The down state indicates that the pantograph is disconnected from the contact network. When the pantograph is in the down state, the vehicle system cannot obtain power from the contact network through the pantograph.

[0088] S202: Determine a power supply module of the vehicle system according to the state of the pantograph.

[0089] The power supply module includes one or more of a pantograph, an energy storage device, a power generation device and a range extender.

[0090] An energy storage device is a device used by a vehicle to store and release electrical energy. When released, it can provide power to the vehicle's systems. An example of an energy storage device is a power battery.

[0091] A generator is a device used by a vehicle system to convert other forms of energy into electrical energy. Examples of generators include diesel generators and gasoline generators.

[0092] Exemplarily, a diesel generator includes a diesel engine and a diesel generator. For example, a diesel generator uses diesel as fuel, converts the chemical energy of the fuel into mechanical energy through the diesel engine, and then converts the mechanical energy into electrical energy through the diesel generator.

[0093] A range extender usually consists of an engine, an Integrated Starter Generator (ISG) and a control system, and provides electrical energy to the vehicle system by generating electricity.

[0094] In some embodiments, determining a power supply module of a vehicle system according to a state of a pantograph includes:

[0095] When the state of the pantograph is a raised state, determining that the power supply module is a pantograph;

[0096] When the pantograph is in a descending state, a first amount of electricity of the energy storage device and a first amount of oil of the power generation device are obtained, and a power supply module is determined according to the first amount of electricity and the first amount of oil.

[0097] The first power level of the energy storage device is the current remaining power level of the energy storage device, which reflects the state of charge (SOC) of the energy storage device and can be expressed in percentage form (0% to 100%).

[0098] The following describes how to obtain the first power of the energy storage device through Example 1a and Example 1b:

[0099] In example 1a, the current remaining power of the energy storage device is 70%, and the terminal device determines that the first power is 70%;

[0100] In example 1b, the terminal device determines that the energy storage device currently consumes 40%, and further determines that the first power is 60%.

[0101] The first fuel level of the power generation device is the current remaining fuel level of the power generation device, which can be expressed as a percentage (0% to 100%). It should be noted that the process of obtaining the first fuel level of the power generation device is similar to that of obtaining the first power level of the energy storage device, and will not be repeated here.

[0102] Optionally, determining the power supply module according to the first electrical quantity and the first fuel quantity includes:

[0103] When the first power is sufficient, the energy storage device is determined to be the power supply module; when the first power is insufficient, the range extender is determined to be the power supply module; when the first power is particularly low and the first oil level is sufficient, the power generation device is determined to be the power supply module; when the first power is particularly low and the first oil level is insufficient, the energy storage device and the power generation device are determined to be the power supply modules.

[0104] S203: Supply power to the vehicle system according to the power supply module.

[0105] In some embodiments, the terminal device controls the closing or opening of the first conversion switch, the closing or opening of the second conversion switch, the closing or opening of the third conversion switch connection, and the start and stop of the range extender according to the power supply module to supply power to the vehicle system.

[0106] Optionally, supplying power to the vehicle system may be understood as supplying power to loads in the vehicle system.

[0107] The embodiment of the present application provides a power supply method, which obtains the state of the pantograph, which is either raised or lowered; determines the power supply module of the vehicle system according to the state of the pantograph, which includes one or more of a pantograph, an energy storage device, a power generation device, and a range extender; and supplies power to the vehicle system according to the power supply module. In the above method, when the pantograph is in the raised state, the overhead contact network is preferentially used for power supply, so that the range extender is in a completely shut down state, thereby avoiding the fuel loss caused by the no-load operation of the diesel generator in the related art; after the pantograph is in the lowered state, the electric energy stored in the energy storage device is preferentially used to power the vehicle, and the range extender and the power generation device are started on demand only when the energy storage is insufficient. By accurately monitoring the state of the pantograph to dynamically plan the power supply strategy, a significant reduction in fuel consumption is achieved.

[0108] In addition, the addition of a pantograph solves the problem of missing overhead power supply and increases the diversity and flexibility of vehicle power supply methods.

[0109] The following Figure 3 , the first switching switch, the second switching switch, and the third switching switch in the high-voltage conversion control box are explained.

[0110] Figure 3 This is a schematic diagram of the structure of the high-voltage conversion control box provided in the embodiment of this application. Figure 3 The high-voltage conversion control box includes: a first switching switch, a second switching switch, and a third switching switch.

[0111] The first switching switch includes a first switch (S1), a first pre-charging resistor (C1), and a second switch (S2); the second switching switch includes a third switch (S3), a second pre-charging resistor (C2), and a fourth switch (S4); and the third switching switch includes a fifth switch (S5), a third pre-charging resistor (C3), and a sixth switch (S6).

[0112] The output end of the pantograph is simultaneously connected to the first end of the first switch and the first end of the second switch through a DC conversion controller; the second end of the first switch is connected to the first end of the first pre-charging resistor. The output end of the power generation device is simultaneously connected to the first end of the third switch and the first end of the fourth switch through a DC conversion controller; the second end of the third switch is connected to the first end of the second pre-charging resistor. The output end of the energy storage device is simultaneously connected to the first end of the fifth switch and the first end of the sixth switch; the second end of the fifth switch is connected to the first end of the third pre-charging resistor. The second end of the first pre-charging resistor, the second end of the second switch, the second end of the second pre-charging resistor, the second end of the fourth switch, the second end of the third pre-charging resistor, and the second end of the sixth switch are simultaneously connected to the output end of the high-voltage conversion control box.

[0113] Next, the terminal device controlling the closing of the first switch is described in detail:

[0114] When the power supply module includes a pantograph, the terminal device controls the first switch to close. At this time, the current charges the load through the first pre-charging resistor, which can suppress the instantaneous surge current when the switch is closed. The second switch is closed after a preset delay to form a low-impedance power supply path.

[0115] It should be noted that the method for the terminal device to control the closing of the second conversion switch and the third conversion switch is similar to the method for controlling the closing of the first conversion switch, and will not be repeated here.

[0116] In the embodiment of the present application, the switch closing method of pre-charging first and then main-on is adopted to avoid the impact of surge current on the load caused by direct closing.

[0117] exist Figure 2 Based on the embodiment shown, in the above power supply method, the terminal device determines the power supply module according to the first power and the first fuel level. There are two cases. Figure 4-5 , a detailed description of the method for determining the power supply module is given.

[0118] Figure 4 Schematic diagram of the process of determining the power supply module provided in the embodiment of the present application Figure 1 See Figure 4 ,include:

[0119] S401: Determine whether a first power level is greater than or equal to a first threshold.

[0120] If yes, go to S402. If no, go to S403.

[0121] S402: When the first power level is greater than or equal to a first threshold, determine that the power supply module is an energy storage device.

[0122] When the first power level is greater than or equal to the first threshold, the current remaining power of the energy storage device is sufficient, and the vehicle system can be powered by the energy storage device alone.

[0123] The first threshold is, for example, 60%.

[0124] When the first electrical quantity is greater than or equal to the first threshold, after determining that the power supply module is an energy storage device, the energy storage device releases electrical energy to supply power to the vehicle system.

[0125] S403: When the first power level is less than a first threshold, determine that the power supply module is a range extender, and the range extender charges the energy storage device.

[0126] In some embodiments, determining that the power supply module is a range extender includes:

[0127] When the first power level is less than a first threshold and greater than or equal to a second threshold, determining that the power supply module is a range extender;

[0128] When the first electrical quantity is less than the second threshold value and the first oil quantity is greater than or equal to the third threshold value, the power supply module is determined to be a power generation device, and the power generation device charges the energy storage device; when the first oil quantity is less than the third threshold value, the power supply module is determined to be an energy storage device and a power generation device.

[0129] The second threshold is, for example, 40%, and the third threshold is, for example, 30%.

[0130] In some embodiments, when the first power is less than a first threshold and greater than or equal to a second threshold, after determining that the power supply module is a range extender, the method includes:

[0131] determining a first output power according to the first electrical quantity;

[0132] The range extender is started and supplies power to the vehicle system according to the first output power.

[0133] The following describes a process in which a terminal device determines a first output power based on a first electrical quantity through Example 2a and Example 2b.

[0134] In mode 2a, the terminal device can query a first correspondence relationship based on the first power level to obtain the first output power. The first correspondence relationship includes multiple first power levels, multiple first output powers, and correspondences between multiple first power levels and multiple first output powers. For example, the first correspondence relationship is shown in Table 1 below.

[0135] Table 1 First correspondence

[0136] First electrical quantity First output power Electrical quantity 1 Power 1 Electrical quantity 2 Power 2 Electrical quantity 3 Power 3

[0137] For example, the first electric quantity is electric quantity 1. Based on Table 1, the query results in that the first output power is power 1.

[0138] In method 2b, the terminal device can determine the range of the first power level based on the first power level, and then query the second correspondence relationship based on the range of the first power level to obtain the first output power. The second correspondence relationship includes multiple first power level ranges, multiple first output powers, and correspondences between multiple first power level ranges and multiple first output powers. For example, the second correspondence relationship is shown in Table 2 below.

[0139] Table 2 Second correspondence

[0140] Range of the first electrical quantity First output power Range 1 Power 1 Range 2 Power 2 Range 3 Power 3

[0141] For example, if the first power is 45% and range 1 is greater than 40% and less than 50%, then the range to which the first power belongs is determined to be range 1. Based on Table 1, the first output power obtained by query is power 1.

[0142] Optionally, the first output power and the first electrical quantity are in an inverse linear relationship, that is, the lower the first electrical quantity, the higher the first output power.

[0143] In some embodiments, the process of the range extender supplying power to the vehicle system according to the first output power is as follows: the range extender prioritizes supplying power to the load. When the power required by the load is less than the first output power, the range extender uses the remaining power to charge the energy storage device; when the current remaining power of the energy storage device is greater than or equal to an eighth threshold, the range extender stops supplying power and determines that the power supply module is the energy storage device.

[0144] The eighth threshold is greater than the first threshold, and the eighth threshold is, for example, 70%.

[0145] For example, if the first output power is 50kW and the power required by the load is 30kW, the range extender will preferentially provide 30kW of power to the load, and then use 20kW of power to charge the energy storage device.

[0146] When the range extender uses the remaining power to charge the energy storage device, the terminal device controls the second switch to close.

[0147] When the first power level is less than the second threshold and the first oil level is greater than or equal to the third threshold, that is, the power level of the energy storage device is insufficient but the oil level of the power generation device is sufficient, the power generation device can be used to supply power to the vehicle system, and the power generation device can also charge the energy storage device, thereby protecting the energy storage device.

[0148] In some embodiments, when the first electrical quantity is less than a second threshold value and the first oil quantity is less than a third threshold value, after determining that the power supply module is an energy storage device and a power generation device, the method includes:

[0149] Obtaining an output power of the energy storage device and an output power of the power generation device according to the first oil level and the first electrical quantity;

[0150] The energy storage device supplies power to the vehicle system according to the output power of the energy storage device; the power generation device supplies power to the vehicle system according to the output power of the power generation device.

[0151] When the first power level is less than the second threshold and the first oil level is less than the third threshold, that is, the power level of the energy storage device is insufficient and the oil level of the power generation device is also insufficient, the energy storage device and the power generation device work together to supply power to the vehicle system, which can balance the energy efficiency of the vehicle system.

[0152] For example, if the first power level is 15% and the first fuel level is 8%, the power distribution ratio between the energy storage device and the generator device may be 15:8. If the total vehicle power demand is 40kW, the energy storage device outputs approximately 27.7kW and the generator device outputs approximately 12.3kW.

[0153] An embodiment of the present application provides a power supply method that determines whether a first power level is greater than a first threshold; when the first power level is greater than or equal to the first threshold, determines that the power supply module is an energy storage device; when the first power level is less than the first threshold and greater than or equal to a second threshold, determines that the power supply module is a range extender; when the first power level is less than the first threshold, determines that the power supply module is a range extender, and the range extender charges the energy storage device. In the above method, a stepped power supply strategy based on power level thresholds is implemented to achieve precise start-stop and efficient operation of the range extender, thereby significantly reducing fuel consumption.

[0154] In addition, the method further includes: when the first power level is less than the first threshold and greater than or equal to the second threshold, determining that the power supply module is a range extender; when the first power level is less than the second threshold and the first fuel level is greater than or equal to the third threshold, determining that the power supply module is a power generation device, and the power generation device charges the energy storage device; when the first fuel level is less than the third threshold, determining that the power supply module is an energy storage device and a power generation device. In the above method, when the energy storage device is low on power, the range extender can be started and operated in a high-efficiency fuel range, converting the chemical energy of the fuel into electrical energy, replenishing the energy storage device while maintaining vehicle operation, forming a "driving and charging" extended-range endurance mode. The range extender, power generation device, and energy storage device significantly improve the vehicle's endurance in areas without contact lines through collaborative power supply and dynamic energy replenishment mechanisms.

[0155] Based on any of the above embodiments, Figure 5 , another method for determining the power supply module is described.

[0156] Figure 5 Schematic diagram of the process of determining the power supply module provided in the embodiment of the present application Figure 2 See Figure 5 ,include:

[0157] S501: Obtain the power corresponding to the load.

[0158] Loads include but are not limited to: traction controller, traction motor, gearbox, bogie, etc.

[0159] The power corresponding to the load can be understood as the power currently required to maintain the operation of the load.

[0160] S502: Determine a power supply module according to the first electrical quantity, the first fuel quantity, and the power corresponding to the load.

[0161] In some embodiments, determining the power supply module according to the first amount of electricity, the first amount of oil, and the power includes:

[0162] When the first power level is greater than or equal to a fourth threshold, determining that the power supply module is an energy storage device;

[0163] When the first power level is less than a fourth threshold value and the first power level is greater than or equal to a fifth threshold value, determining a power supply module according to the power corresponding to the load and the first oil level;

[0164] When the first electrical quantity is less than the fifth threshold value and the first oil quantity is greater than or equal to the sixth threshold value, the power supply module is determined to be a power generation device, and the power generation device charges the energy storage device; when the first oil quantity is less than the sixth threshold value, the power supply module is determined to be an energy storage device and a power generation device.

[0165] The fourth threshold is, for example, 70%, the fifth threshold is 30%, and the sixth threshold is, for example, 20%.

[0166] In some embodiments, the terminal device determines the power supply module based on the power and the first fuel level, which may be:

[0167] When the power is less than or equal to a seventh threshold, determining that the power supply module includes a range extender and an energy storage device;

[0168] When the power is greater than or equal to a seventh threshold, it is determined that the power supply module is an energy storage device and a power generation device, and the amount of power provided by the power generation device is associated with the first oil amount.

[0169] Alternatively, the seventh threshold may be determined according to the type of vehicle.

[0170] Exemplarily, when the vehicle is a small mobile device, the seventh threshold is, for example, 30 kW.

[0171] In some embodiments, when the power corresponding to the load is less than or equal to a seventh threshold, determining that the power supply module includes a range extender and an energy storage device specifically includes:

[0172] Determine whether the power corresponding to the load is less than the maximum power of the range extender;

[0173] When the power corresponding to the load is less than the maximum power of the range extender, the power supply module is determined to be the range extender;

[0174] When the power corresponding to the load is less than or equal to the maximum power of the range extender, the power supply module is determined to be the range extender and the energy storage device.

[0175] Optionally, the amount of electricity provided by the power generation device is associated with the first oil amount; the greater the first oil amount, the more electricity the power generation device provides.

[0176] The embodiment of the present application provides a power supply method, power corresponding to a load is acquired; a power supply module is determined according to the first electric quantity, the first oil quantity and the power corresponding to the load. In the above method, through the multi-dimensional decision mechanism of fusing the electric quantity, the oil quantity and the load power, the dynamic optimal configuration of the power supply module is realized, the energy utilization efficiency is significantly improved, and the fuel consumption is reduced.

[0177] The method further includes: when the first electric quantity is greater than or equal to a fourth threshold value, determining that the power supply module is an energy storage device; when the first electric quantity is less than the fourth threshold value and the first electric quantity is greater than or equal to a fifth threshold value, determining the power supply module according to the power corresponding to the load and the first oil quantity; when the first electric quantity is less than the fifth threshold value and the first oil quantity is greater than or equal to a sixth threshold value, determining that the power supply module is a power generation device, and the power generation device charges the energy storage device; and when the first oil quantity is less than the sixth threshold value, determining that the power supply module is the energy storage device and the power generation device. In the above method, through the hierarchical control of the electric quantity threshold value, the excessive discharge of the energy storage device and the invalid start of the range extender are avoided, the energy storage device always works in the high-efficiency charge and discharge interval, the range extender only intervenes when necessary and preferentially works in the fuel efficiency peak area, and therefore the fuel consumption is reduced.

[0178] The method further includes: when the power is less than or equal to a seventh threshold value, determining that the power supply module includes the range extender and the energy storage device; and when the power is greater than or equal to the seventh threshold value, determining that the power supply module is the energy storage device and the power generation device, and the electric quantity provided by the power generation device is associated with the first oil quantity. In the above method, when the power corresponding to the load is lower than the seventh threshold value, the terminal device preferentially judges the matching degree of the maximum power of the range extender and the power corresponding to the load. If the power corresponding to the load is less than the maximum power of the range extender, only the range extender independently supplies power, and the energy storage device is prevented from participating in light-load discharge to cause energy loss; and if the power corresponding to the load is close to the upper limit of the maximum power of the range extender, the range extender and the energy storage device are started to cooperatively supply power, and the range extender is prevented from overloading, so that the range extender and the energy storage device form a complementary mode of 'light-load fuel efficiency and heavy-load multi-source cooperation', and therefore the fuel consumption is reduced.

[0179] In some embodiments, the vehicle system further includes a multi-source output controller.

[0180] The vehicle system provided by the embodiment of the present application is further described below based on the Figure 6 , and Figure 1 The vehicle system provided by the embodiment of the present application is further described below based on the

[0181] Figure 6 The structure of the vehicle system provided by the embodiment of the present application is shown in Figure 2 , and Figure 6 The vehicle system further includes a multi-source output controller.

[0182] The vehicle system further includes a traction controller and a traction motor.

[0183] The traction controller is connected to the output end of the high-voltage conversion distribution box, and the traction controller is also connected to the traction motor.

[0184] The range extender is connected to the traction motor.

[0185] The first end of the multi-source output controller is connected to the output end of the high-voltage conversion distribution box.

[0186] The multi-source output controller is used to convert the electric energy output by the high-voltage conversion distribution box into electric energy of various voltage specifications according to the power demand of the load.

[0187] Various voltage specifications include but are not limited to: AC (Alternating Current, AC) 380V, AC220V, DC (Direct Current, DC) 110V, and DC24V.

[0188] The multi-source output controller is also connected to multiple loads.

[0189] For example, Figure 6 As shown, the multiple loads include load 1, load 2, and load 3. The second terminal of the multi-source output controller is connected to load 1, the third terminal of the multi-source output controller is connected to load 2, and the fourth terminal of the multi-source output controller is connected to load 3.

[0190] In some embodiments, the multi-source output controller includes a DC / AC module and a DC / DC module, wherein the DC / AC module is connected to load 1, the first end of the DC / DC module is connected to load 2, and the second end of the DC / DC module is connected to load 3.

[0191] For example, the DC-AC module converts 800V DC power into 380V AC power and delivers the 380V AC power to load 1. The DC-DC module converts 800V DC power into 110V DC power and delivers the 110V DC power to load 2 through the first end of the DC-DC module.

[0192] Load 1 is, for example, an air conditioning compressor or motor drive. Load 2 is, for example, vehicle lighting or auxiliary equipment. Load 3 is, for example, headlights or windshield wipers.

[0193] In an embodiment of the present application, the vehicle system also includes: a multi-source output controller, which provides multiple voltage specifications such as AC380V, AC220V, DC110V, DC24V, etc., which can simultaneously meet the power supply needs of multiple loads on the vehicle, avoid the use of multiple independent converters, and achieve high integration of the vehicle system.

[0194] Figure 7A schematic diagram of the structure of the power supply device provided in the embodiment of the present application is shown in FIG. Figure 6 As shown, the power supply device 70 provided in this embodiment includes:

[0195] An acquisition module 701 is configured to acquire a state of the pantograph, where the state of the pantograph is either a raised state or a lowered state;

[0196] a determination module 702 for determining a power supply module of the vehicle system according to the state of the pantograph, the power supply module including one or more of the pantograph, the energy storage device, the power generation device, and the range extender;

[0197] The power supply device 703 is used to supply power to the vehicle system according to the power supply module.

[0198] It should be noted here that the above-mentioned power supply device 70 provided in the embodiment of the present application can implement all the method steps implemented in the above-mentioned method embodiment and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0199] In some embodiments, the determining module 702 is specifically configured to:

[0200] When the state of the pantograph is a raised state, determining that the power supply module is the pantograph;

[0201] When the pantograph is in a descending state, a first amount of electricity of the energy storage device and a first amount of oil of the power generation device are obtained, and the power supply module is determined according to the first amount of electricity and the first amount of oil.

[0202] In some embodiments, the determining module 702 is specifically configured to:

[0203] When the first electrical quantity is greater than or equal to a first threshold, determining that the power supply module is the energy storage device;

[0204] When the first electrical quantity is less than the first threshold, the power supply module is determined to be the range extender, and the range extender charges the energy storage device.

[0205] In some embodiments, the determining module 702 is specifically configured to:

[0206] When the first power level is greater than or equal to a second threshold, determining that the power supply module is the range extender;

[0207] When the first electrical quantity is less than the second threshold value and the first oil quantity is greater than or equal to the third threshold value, the power supply module is determined to be the power generation device, and the power generation device charges the energy storage device; when the first oil quantity is less than the third threshold value, the power supply module is determined to be the energy storage device and the power generation device.

[0208] In some embodiments, the vehicle system includes a load; in some embodiments, the determining module 702 is specifically configured to:

[0209] Obtaining the power corresponding to the load;

[0210] The power supply module is determined according to the first electrical quantity, the first oil quantity, and the power.

[0211] In some embodiments, the determining module 702 is specifically configured to:

[0212] When the first electrical quantity is greater than or equal to a fourth threshold, determining that the power supply module is the energy storage device;

[0213] When the first electrical quantity is less than the fourth threshold value and the first electrical quantity is greater than or equal to a fifth threshold value, determining the power supply module according to the power and the first oil quantity;

[0214] When the first electrical quantity is less than the fifth threshold value, the first oil quantity is greater than or equal to the sixth threshold value, and the power supply module is determined to be the power generation device, and the power generation device charges the energy storage device; when the first oil quantity is less than the sixth threshold value, the power supply module is determined to be the energy storage device and the power generation device.

[0215] In some embodiments, the determining module 702 is specifically configured to:

[0216] When the power is less than or equal to a seventh threshold, determining that the power supply module includes the range extender and the energy storage device;

[0217] When the power is greater than or equal to a seventh threshold, it is determined that the power supply module is the energy storage device and the power generation device, and the amount of electricity provided by the power generation device is associated with the first oil amount.

[0218] It should be noted here that the above-mentioned power supply device 70 provided in the embodiment of the present application can implement all the method steps implemented in the above-mentioned method embodiment and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0219] It should be understood that the power supply device 70 is implemented in the form of a functional module. The term "module" herein may refer to an application-specific integrated circuit (ASIC), an electronic circuit, a processor (e.g., a shared processor, a dedicated processor, or a group processor) and memory for executing one or more software or firmware programs, combined logic circuits, and / or other suitable components that support the described functionality.

[0220] Figure 8 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. The electronic device can be replaced by other terminal devices that execute the above method embodiments. Figure 8 As shown, the electronic device 80 provided in this embodiment includes: at least one processor 801 and a memory 802. The processor 801 and the memory 802 are connected via a bus 803.

[0221] During the specific implementation process, at least one processor 801 executes the computer-executable instructions stored in the memory 802, so that the at least one processor 801 performs the above method.

[0222] The specific implementation process of the processor 801 can be found in the above method embodiment. Its implementation principle and technical effects are similar and will not be repeated here in this embodiment.

[0223] In the above embodiments, it should be understood that the processor may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), etc. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the method disclosed in the present invention may be directly executed by a hardware processor or by a combination of hardware and software modules in the processor.

[0224] The memory may include random access memory (RAM) and may also include non-volatile memory (NVM), such as at least one disk storage.

[0225] A bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus. Buses can be categorized as address buses, data buses, and control buses. For ease of illustration, the buses in the drawings of this application are not limited to just one bus or just one type of bus.

[0226] The present application also provides a computer program product, including a computer program, which implements the above method when executed by a processor.

[0227] The present application also provides a computer-readable storage medium, in which computer-executable instructions are stored. When a processor executes the computer-executable instructions, the above method is implemented.

[0228] The readable storage medium may be implemented by any type of volatile or nonvolatile memory device, or a combination thereof, such as static random-access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The readable storage medium may be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0229] An exemplary readable storage medium is coupled to a processor, such that the processor can read information from the readable storage medium and write information to the readable storage medium. Of course, the readable storage medium can also be an integral part of the processor. The processor and the readable storage medium can be located in an application-specific integrated circuit. Of course, the processor and the readable storage medium can also exist as discrete components in a device.

[0230] The division of units is merely a logical functional division; actual implementations may employ alternative divisions, such as combining or integrating multiple units or components into another system, or omitting or disabling certain features. Furthermore, any direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between devices or units, either through an interface, electrical, mechanical, or other means.

[0231] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0232] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0233] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the portion that contributes to the relevant art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes instructions for causing a computer device (such as a personal computer, server, or network device) to execute all or part of the steps of the various embodiments of the method of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, mobile hard drives, ROM, RAM, magnetic disks, or optical disks.

[0234] Those skilled in the art will appreciate that all or part of the steps in the above-described method embodiments can be implemented using hardware associated with program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments. The aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0235] Finally, it should be noted that those skilled in the art will readily identify other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art not disclosed herein. The present invention is not limited to the precise structure described above and illustrated in the accompanying drawings, and various modifications and variations may be made without departing from the scope thereof. The scope of the present invention is limited solely by the appended claims.

Claims

1. A power supply method, characterized in that: Applied to a vehicle system, the vehicle system includes: a pantograph, an energy storage device, a power generation device and a range extender, wherein: Acquire the state of the pantograph, where the state of the pantograph is a raised state or a lowered state; determining a power supply module of the vehicle system according to a state of the pantograph, the power supply module including one or more of the pantograph, the energy storage device, the power generation device, and the range extender; According to the power supply module, power is supplied to the vehicle system.

2. The method according to claim 1, characterized in that Determining a power supply module of the vehicle system according to a state of the pantograph includes: When the state of the pantograph is a raised state, determining that the power supply module is the pantograph; When the pantograph is in a descending state, a first amount of electricity of the energy storage device and a first amount of oil of the power generation device are obtained, and the power supply module is determined according to the first amount of electricity and the first amount of oil.

3. The method according to claim 2, characterized in that Determining the power supply module according to the first electrical quantity and the first fuel quantity includes: When the first electrical quantity is greater than or equal to a first threshold, determining that the power supply module is the energy storage device; When the first electrical quantity is less than the first threshold, the power supply module is determined to be the range extender, and the range extender charges the energy storage device.

4. The method according to claim 3, characterized in that Determining that the power supply module is the range extender includes: When the first power level is greater than or equal to a second threshold, determining that the power supply module is the range extender; When the first electrical quantity is less than the second threshold value and the first oil quantity is greater than or equal to the third threshold value, the power supply module is determined to be the power generation device, and the power generation device charges the energy storage device; when the first oil quantity is less than the third threshold value, the power supply module is determined to be the energy storage device and the power generation device.

5. The method according to claim 2, characterized in that The vehicle system includes a load; and determining the power supply module according to the first electrical quantity and the first fuel quantity includes: Obtaining the power corresponding to the load; The power supply module is determined according to the first electrical quantity, the first oil quantity, and the power.

6. The method according to claim 5, characterized in that Determining the power supply module according to the first electrical quantity, the first fuel quantity, and the power includes: When the first electrical quantity is greater than or equal to a fourth threshold, determining that the power supply module is the energy storage device; When the first electrical quantity is less than the fourth threshold value and the first electrical quantity is greater than or equal to a fifth threshold value, determining the power supply module according to the power and the first oil quantity; When the first electrical quantity is less than the fifth threshold value, the first oil quantity is greater than or equal to the sixth threshold value, and the power supply module is determined to be the power generation device, and the power generation device charges the energy storage device; when the first oil quantity is less than the sixth threshold value, the power supply module is determined to be the energy storage device and the power generation device.

7. The method according to claim 6, characterized in that Determining the power supply module according to the power and the first oil amount includes: When the power is less than or equal to a seventh threshold, determining that the power supply module includes the range extender and the energy storage device; When the power is greater than or equal to a seventh threshold, it is determined that the power supply module is the energy storage device and the power generation device, and the amount of electricity provided by the power generation device is associated with the first oil amount.

8. A power supply device, characterized in that: Applied to a vehicle system, the vehicle system includes: a pantograph, an energy storage device, a power generation device and a range extender, wherein: An acquisition module, configured to acquire a state of the pantograph, wherein the state of the pantograph is a raised state or a lowered state; a determination module, configured to determine a power supply module of the vehicle system according to a state of the pantograph, the power supply module including one or more of the pantograph, the energy storage device, the power generation device, and the range extender; A power supply module is used to supply power to the vehicle system according to the power supply module.

9. An electronic device, characterized in that: include: Memory, processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory, so that the processor performs the method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer-executable instructions, which are used to implement the method according to any one of claims 1 to 7 when executed by a processor.

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