Flying car electric energy conversion method and system

Abstract

The invention discloses an electric energy conversion method and system for a hovercar, and relates to the technical field of two-body hovercars, the electric energy conversion method for the hovercar is applied to the electric energy conversion system for the hovercar, and the electric energy conversion method for the hovercar comprises the steps that the electric energy transmission direction between a land walking body battery and a flying body battery is determined; based on the electric energy transmission direction, determining a working mode of the flying car electric energy conversion system; and based on the working mode, controlling the land walking body battery and the flying body battery to carry out electric energy transmission. According to the scheme, bidirectional energy transfer is carried out between the land walking body battery and the flying body battery in the two-body hovercar, the overall electric energy utilization rate of the two-body hovercar is improved, the cruising ability of the driving function is enhanced, the switching efficiency of the flying function and the land walking function is optimized, and therefore the user experience feeling is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of two-body flying cars, and in particular to a flying car electric energy conversion method and system. Background Art

[0002] With the development of science and technology and the progress of society, people's travel methods have become more and more diversified. As urban traffic becomes more and more congested, in order to save traffic resources, people have developed a two-part flying car that can travel both on land and in the air to avoid long traffic jams during the journey to the destination.

[0003] The two-part flying car usually uses a land body battery and a flying body battery to provide energy sources for the two-part flying car to travel on land and in the air respectively. Among them, the land body battery and the flying body battery are independent energy sources. The land body battery and the flying body battery are only coupled or separated at the mechanical level. The coupling between the land body battery and the flying body needs to be in their respective high-voltage electrical environments, and the electrical interconnection between the two is not coherent. During the actual driving of the two-part flying car, the total electrical energy stored in the land body battery and the flying body battery cannot be fully utilized. Summary of the invention

[0004] The main purpose of the present invention is to provide a flying car electric energy conversion method and system, aiming to solve the technical problem of how to improve the electric energy utilization rate of the total electric energy stored in the land body battery and the flying body battery in a two-part flying car.

[0005] To achieve the above-mentioned purpose, an embodiment of the present invention provides a flying car electric energy conversion method, which is applied to a flying car electric energy conversion system. The flying car electric energy conversion method comprises the following steps:

[0006] Determine the direction of power transmission between the land-based battery and the flying-based battery;

[0007] Based on the electric energy transmission direction, determining the working mode of the electric energy conversion system of the flying car;

[0008] Based on the working mode, the land-based battery and the flying-based battery are controlled to transfer electric energy.

[0009] Optionally, the step of determining the working mode of the flying car power conversion system based on the power transmission direction includes:

[0010] When the power transmission direction is from the land-based battery to the flying-based battery, detecting a first voltage value of the land-based battery and a second voltage value of the flying-based battery;

[0011] When the first voltage value is greater than the second voltage value, the operating mode is determined to be the first operating mode, and the first operating mode is that the high-voltage land-based battery transmits electrical energy to the low-voltage flying-based battery.

[0012] Optionally, when the direction of power transmission is from the land-based battery to the flying-based battery, after the step of detecting the first voltage value of the land-based battery and the second voltage value of the flying-based battery, the method further includes:

[0013] When the first voltage value is less than the second voltage value, the operating mode is determined to be the second operating mode, and the second operating mode is that the low-voltage land-based battery transmits electrical energy to the high-voltage flying-based battery.

[0014] Optionally, the step of determining the working mode of the electric energy conversion system of the flying car based on the electric energy transmission direction further includes:

[0015] When the power transmission direction is from the flying body battery to the land body battery, detecting a first voltage value of the land body battery and a second voltage value of the flying body battery;

[0016] When the second voltage value is greater than the first voltage value, the operating mode is determined to be a third operating mode, and the third operating mode is that the flying body battery with a high voltage transmits electric energy to the land body battery with a low voltage.

[0017] Optionally, when the direction of power transmission is from the flying body battery to the land body battery, after the step of detecting the first voltage value of the land body battery and the second voltage value of the flying body battery, the method further includes:

[0018] When the second voltage value is less than the first voltage value, the operating mode is determined to be a fourth operating mode, and the fourth operating mode is that the flying body battery with a low voltage transmits electric energy to the land body battery with a high voltage.

[0019] Optionally, before the step of controlling the land-based battery and the flying-based battery to perform power transmission based on the working mode, the step further includes:

[0020] The connection circuit between the land-based battery and the flying-based battery is connected, and the connection circuit between the land-based battery and the flying-based battery is pre-charged.

[0021] In addition, to achieve the above-mentioned purpose, an embodiment of the present invention further proposes a flying car power conversion system, wherein the flying car power conversion system adopts the flying car power conversion method as described above when working, and the flying car power conversion system includes:

[0022] A land-based battery, used to supply power to a land-based load;

[0023] A flying body battery, used to supply power to the flying body load;

[0024] A bidirectional power transmission module, used to control the power transmission between the land-based battery and the flying-based battery;

[0025] The land-based battery and the flying-based battery are connected via the bidirectional power transmission module.

[0026] Optionally, the bidirectional power transmission module includes: a first switch, a second switch, a third switch, a fourth switch and an energy storage unit;

[0027] The first end of the energy storage unit is respectively connected to the first end of the first switch and the first end of the second switch, and the second end of the energy storage unit is respectively connected to the first end of the third switch and the first end of the fourth switch; the second end of the first switch is connected to the positive electrode of the land-based battery; the second end of the second switch is connected to the negative electrode of the land-based battery; the second end of the third switch is respectively connected to the positive electrode of the flying battery, the second end of the fourth switch and the negative electrode of the flying battery;

[0028] The energy storage unit is used to control the direction of power transmission between the land-based battery and the flying-based battery based on the on / off states of the first switch, the second switch, the third switch, and the fourth switch.

[0029] Optionally, the flying car electric energy conversion system further includes: a first voltage stabilizing filter module and a second voltage stabilizing filter module;

[0030] The first end of the first voltage stabilizing filter module is respectively connected to the positive electrode of the land-based battery and the second end of the first switch, and the second end of the first voltage stabilizing filter module is respectively connected to the negative electrode of the land-based battery and the second end of the second switch; the first end of the second voltage stabilizing filter module is respectively connected to the positive electrode of the flying battery and the second end of the third switch, and the second end of the second voltage stabilizing filter module is connected to the negative electrode of the flying battery and the second end of the fourth switch;

[0031] The first voltage stabilization and filtering module is used to stabilize and filter the voltage between the positive electrode and the negative electrode of the land vehicle battery;

[0032] The second voltage stabilization and filtering module is used to stabilize and filter the voltage value between the positive electrode and the negative electrode of the flying body battery.

[0033] Optionally, the flying car electric energy conversion system further includes: a first battery switch, a second battery switch, a first pre-charging module and a second pre-charging module;

[0034] The first end of the first pre-charging module is connected to the first end of the first voltage stabilizing and filtering module, and the second end of the first pre-charging module is connected to the positive electrode of the land-based battery; the first end of the first battery switch is connected to the second end of the first voltage stabilizing and filtering module, and the second end of the first battery switch is connected to the negative electrode of the land-based battery;

[0035] The first end of the second pre-charging module is connected to the first end of the second voltage stabilizing and filtering module, and the second end of the second pre-charging module is connected to the positive electrode of the flying body battery; the first end of the second battery switch is connected to the second end of the second voltage stabilizing and filtering module, and the second end of the second battery switch is connected to the negative electrode of the flying body battery;

[0036] The first pre-charging module is used to limit the instantaneous current value flowing through the first voltage stabilizing and filtering module when the first battery switch is turned on;

[0037] The second pre-charging module is used to limit the instantaneous current value flowing through the second voltage stabilizing and filtering module when the second battery switch is turned on.

[0038] The embodiment of the present invention proposes a flying car power conversion method and system, the flying car power conversion method is applied to the flying car power conversion system, and the steps of the flying car power conversion method include: determining the power transmission direction between the land body battery and the flying body battery; based on the power transmission direction, determining the working mode of the flying car power conversion system; based on the working mode, controlling the land body battery and the flying body battery to transmit power. The technical solution of the present invention improves the overall power utilization rate of the two-part flying car by performing bidirectional energy transfer between the land body battery and the flying body battery in the two-part flying car, and by quickly coupling or separating the land body battery and the flying body battery without high voltage, thereby enhancing the endurance of the driving function, optimizing the switching efficiency between the flying function and the land function, and thus improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a schematic diagram of the flow chart of the first embodiment of the flying car electric energy conversion method of the present invention;

[0040] Figure 2 This is a flow chart of a second embodiment of the flying car electric energy conversion method of the present invention;

[0041] Figure 3 This is a schematic flow chart of a third embodiment of the flying car electric energy conversion method of the present invention;

[0042] Figure 4 This is a structural connection diagram of the first embodiment of the electric energy conversion system for a flying car of the present invention;

[0043] Figure 5 This is a circuit connection diagram of the second embodiment of the flying car power conversion system of the present invention.

[0044] Description of Figure Numbers:

[0045] M1 Land vehicle load M2 Flight load B1 Land battery B2 Flying body battery 10 Bidirectional power transmission module 11 Energy storage unit S1~S4 1st to 4th switches L0 Inductors 20 The first voltage stabilization filter module 21 The second voltage stabilization filter module C1~C2 First to second capacitor 30 First battery switch 31 Second battery switch K1~K6 Relays 1 to 6 40 First pre-charge module 41 Second pre-charge module R1~R2 First to second resistor

[0046] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0047] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0048] The embodiment of the present invention provides a method for converting electric energy of a flying car, referring to Figure 1 , Figure 1 Schematic diagram of the flow chart of the first embodiment of the flying car electric energy conversion method of the present invention.

[0049] In this embodiment, the flying car electric energy conversion method includes the following steps:

[0050] S10: Determine the direction of power transmission between the land-based battery and the flying-based battery.

[0051] It should be noted that the execution subject of the embodiment of the present invention can be a flying car power conversion system, which is applied to a two-part flying car, and the flying car power conversion system at least includes a land body battery that provides power for the two-part flying car to travel on land, and a flying body battery that provides power for the two-part flying car to travel in the air. There is a connection loop and a device or equipment for power transmission between the land body battery and the flying body battery, and the device or equipment for power transmission can be used to realize electrical coupling or separation between the land body battery and the flying body battery, and realize the rapid transmission of coupled power between the land body battery and the flying body battery, so as to meet the needs of the two-part flying car for power provided by the land body battery and the flying body battery.

[0052] It is easy to understand that, since the land body battery and the flying body battery are independent electric energy sources, the land body battery is used to provide the two-part flying car with electric energy for driving on land, and the flying body battery is used to provide the two-part flying car with electric energy for driving in the air. Therefore, for the two-part flying car, in the actual driving process, the electric energy consumed in driving on land is likely to be different from the electric energy consumed in driving in the air. It can be understood that after a period of driving, the remaining electric energy in the land body battery and the remaining electric energy in the flying body battery will be greatly different. Therefore, in the actual driving process, in the land body battery and the flying body battery, the electric energy stored in one type of battery is not enough to complete the remaining driving process, while the electric energy stored in the other type of battery is still very sufficient. At this time, in order to enable the two-part flying car to continue to drive on land and in the air, it is necessary to transfer electric energy from one type of battery storing more electric energy to another type of battery. In this process, the direction of electric energy transmission from one type of battery to another type of battery is the said electric energy transmission direction.

[0053] S20: Based on the power transmission direction, determining the working mode of the flying car power conversion system.

[0054] It should be noted that in the actual driving process, there may be situations where it is not necessary to drive on land or in the air. For example, when it is not necessary to drive on land, the land body battery does not need to consume a lot of electricity. At this time, part of the electricity stored in the land body battery can be transferred to the flying body battery for storage and use; and when it is not necessary to drive in the air, the flying body battery does not need to consume a lot of electricity. At this time, part of the electricity stored in the flying body battery can be transferred to the land body battery for storage and use. In order to solve the above problems, in the electric energy conversion system of the flying car, the electric energy in the land body battery and the flying body battery can be transmitted bidirectionally to realize the mutual conversion of electric energy between the land body battery and the flying body battery.

[0055] It is easy to understand that in a specific implementation, the flying car power conversion system should have two power transmission directions: the direction in which the land body battery provides power to the flying body battery and the direction in which the flying body battery provides power to the land body battery. Correspondingly, each power transmission direction will correspond to the situation in which a high-power battery transmits power to a low-power battery, and the situation in which a low-power battery transmits power to a high-power battery, so there are at least four power transmission working modes.

[0056] S30: Based on the working mode, control the land-based battery and the flying-based battery to transfer electric energy.

[0057] It is easy to understand that in the specific implementation, each direction of power transmission corresponds to two working modes, and the working modes can be changed to realize the power conversion between the land body battery and the flying body battery in specific occasions. For example, when the power of the land body battery is insufficient and the two-part flying car needs to travel on land, the power of the flying body battery with more power can be transmitted to the land body battery to meet the needs of the two-part flying car to continue to travel on land; or when the power of the land body battery is sufficient, but the two-part flying car needs to travel on land for a long time and does not need to travel in the air, the power of the flying body battery with less power can also be transmitted to the land body battery to increase the endurance of the two-part flying car for land travel.

[0058] The embodiment of the present invention proposes a flying car power conversion method, which is applied to the flying car power conversion system, and the steps of the flying car power conversion method include: determining the power transmission direction between the land body battery and the flying body battery; based on the power transmission direction, determining the working mode of the flying car power conversion system; based on the working mode, controlling the land body battery and the flying body battery to transmit power. The technical solution of the present invention improves the overall power utilization rate of the two-part flying car by performing bidirectional energy transfer between the land body battery and the flying body battery in the two-part flying car, and by quickly coupling or separating the land body battery and the flying body battery without high voltage, thereby enhancing the endurance of the driving function, optimizing the switching efficiency between the flying function and the land function, and thus improving the user experience.

[0059] Based on the first embodiment of the flying car electric energy conversion method of the present invention, a second embodiment of the flying car electric energy conversion method of the present invention is proposed. Figure 2 , Figure 2 Schematic diagram of the flow chart of the second embodiment of the flying car electric energy conversion method of the present invention.

[0060] like Figure 2 As shown, in this embodiment, step S20 includes:

[0061] S211: When the power transmission direction is from the land-based battery to the flying-based battery, detecting a first voltage value of the land-based battery and a second voltage value of the flying-based battery.

[0062] It should be noted that when the direction of power transmission is from the land-based battery to the flying-based battery, it can be understood as a situation where the two-body flying car needs to travel in the air.

[0063] It is easy to understand that the voltage value of the battery is generally proportional to the power of the battery (which can also be understood as the electrical energy stored in the battery). The more power the battery has, the greater the corresponding voltage value of the battery. By detecting the voltage at both ends of the land-based battery and the voltage at both ends of the flying-based battery, the relationship between the remaining electrical energy in the land-based battery and the remaining electrical energy in the flying-based battery can be obtained.

[0064] S212: When the first voltage value is greater than the second voltage value, determine that the operating mode is a first operating mode, and the first operating mode is that the high-voltage land-based battery transmits electric energy to the low-voltage flying-based battery.

[0065] It should be noted that when the first voltage value at both ends of the land body battery is greater than the second voltage value at both ends of the flying body battery, it can be understood that the electric energy stored in the land body battery is greater than the electric energy stored in the flying body battery. This situation generally occurs when the two-body flying car needs to travel in the air and the flying body battery has insufficient electric energy. This situation is the first working mode of the flying car power conversion system. In the first working mode, the high-voltage land body battery transmits electric energy to the low-voltage flying body battery, which is a working mode in which the land body battery transmits electric energy to the flying body battery.

[0066] Furthermore, in this embodiment, after step S211, the following steps are further included:

[0067] S213: When the first voltage value is less than the second voltage value, determine that the operating mode is a second operating mode, and the second operating mode is that the low-voltage land-based battery transmits electric energy to the high-voltage flying-based battery.

[0068] It should be noted that when the first voltage value at both ends of the land body battery is less than the second voltage value at both ends of the flying body battery, it can be understood that the electric energy stored in the land body battery is less than the electric energy stored in the flying body battery. This situation generally occurs when the two-part flying car needs to travel in the air but not on the land. This situation is the second working mode of the flying car power conversion system. In the second working mode, the low-voltage land body battery transmits electric energy to the high-voltage flying body battery, which is another working mode of the land body battery transmitting electric energy to the flying body battery.

[0069] Furthermore, in this embodiment, the step S20 further includes:

[0070] S221: When the power transmission direction is from the flying body battery to the land body battery, detecting a first voltage value of the land body battery and a second voltage value of the flying body battery.

[0071] It should be noted that when the direction of power transmission is from the flying body battery to the land body battery, it can be understood as a situation where the two-body flying car needs to travel on land.

[0072] It is easy to understand that the voltage value of the battery is generally proportional to the power of the battery (which can also be understood as the electrical energy stored in the battery). The more power the battery has, the greater the corresponding voltage value of the battery. By detecting the voltage at both ends of the land-based battery and the voltage at both ends of the flying-based battery, the relationship between the remaining electrical energy in the land-based battery and the remaining electrical energy in the flying-based battery can be obtained.

[0073] S222: When the second voltage value is greater than the first voltage value, determine that the operating mode is a third operating mode, and the third operating mode is that the flying body battery with a high voltage transmits electric energy to the land body battery with a low voltage.

[0074] It should be noted that when the second voltage value at both ends of the flying body battery is greater than the first voltage value at both ends of the land body battery, it can be understood that the electric energy stored in the flying body battery is greater than the electric energy stored in the land body battery. This situation generally occurs when the two-body flying car needs to travel on land and the land body battery has insufficient electric energy. This situation is the third working mode of the flying car power conversion system. In the third working mode, the high-voltage flying body battery transmits electric energy to the low-voltage land body battery, which is a working mode in which the flying body battery transmits electric energy to the land body battery.

[0075] Furthermore, in this embodiment, after step S221, the following steps are further included:

[0076] S223: When the second voltage value is less than the first voltage value, determine that the operating mode is a fourth operating mode, and the fourth operating mode is that the flying body battery with a low voltage transmits electric energy to the land body battery with a high voltage.

[0077] It should be noted that when the second voltage value at both ends of the flying body battery is less than the first voltage value at both ends of the land body battery, it can be understood that the electric energy stored in the flying body battery is less than the electric energy stored in the land body battery. This situation generally occurs when the two-part flying car needs to travel on land but not in the air. This situation is the fourth working mode of the flying car power conversion system. In the fourth working mode, the low-voltage flying body battery transmits electric energy to the high-voltage land body battery, which is a working mode in which the flying body battery transmits electric energy to the land body battery.

[0078] Based on all the above embodiments of the flying car electric energy conversion method of the present invention, a third embodiment of the flying car electric energy conversion method of the present invention is proposed, referring to Figure 3 , Figure 3FIG. 1 is a flow chart of a third embodiment of a flying car electric energy conversion method according to the present invention.

[0079] like Figure 3 As shown, in this embodiment, before step S30, the following steps are further included:

[0080] S23: connecting the connection circuit between the land-based battery and the flying-based battery, and pre-charging the connection circuit between the land-based battery and the flying-based battery.

[0081] It should be noted that, in general, the land battery and the flying battery are two independent sources of electricity, and the connection loop between the land battery and the flying battery is in a closed state. When the land battery needs to supply power to the flying battery or the flying battery needs to supply power to the land battery, the connection loop between the land battery and the flying battery will be connected, and then the working mode of the flying car power conversion system will be changed to realize the mutual transmission of electricity between the land battery and the flying battery through the connection loop.

[0082] It is easy to understand that since both the land battery and the flying battery are high-voltage power sources, when the connection loop between the land battery and the flying battery is connected, a large instantaneous current will be generated, which will cause damage to the connection loop. Therefore, it is necessary to connect a high-resistance resistor to the connection loop to limit the instantaneous current value generated when the connection loop is connected, pre-charge the connection loop, and switch to the normal power supply loop when the current value in the connection loop is stable, so as to realize normal power-on of the device or equipment used for power transmission between the land battery and the flying battery.

[0083] In addition, the embodiment of the present invention also provides a flying car power conversion system, and the flying car power conversion system adopts the flying car power conversion method of all the above embodiments when working. Figure 4 , Figure 4 This is a structural connection diagram of the first embodiment of the flying car power conversion system of the present invention.

[0084] like Figure 4 As shown, in this embodiment, the flying car power conversion system includes:

[0085] The land-based battery B1 is used to supply power to the land-based load M1.

[0086] The flying body battery B2 is used to supply power to the flying body load M2.

[0087] The bidirectional power transmission module 10 is used to control the power transmission between the land-based battery B1 and the flying battery B2.

[0088] The land-based battery B1 and the flying-based battery B2 are connected via the bidirectional power transmission module 10 .

[0089] It should be noted that the land load M1 can be understood as the functional modules, devices or equipment that the two-part flying car needs to provide power to work to realize the land driving function, and the flying load M2 can be understood as the functional modules, devices or equipment that the two-part flying car needs to provide power to work to realize the air driving function. When it is necessary to drive on land, the two-part flying car is connected to the land load M1 through the land battery B1 to provide power to the land load M1; when it is necessary to drive in the air, the two-part flying car is connected to the flying load M2 through the flying battery B2 to provide power to the flying load M2.

[0090] It is easy to understand that the bidirectional power transmission module 10 is connected between the land body battery B1 and the flying body battery B2. The working mode of the flying car power conversion system can be changed by changing the working state of the bidirectional power transmission module 10. In different working modes, the voltage across the land body battery B1 and the voltage across the flying body battery B2 do not change significantly, so as to realize power transmission between the land body battery B1 and the flying body battery B2.

[0091] The embodiment of the present invention proposes a flying car power conversion system. The flying car power conversion system adopts the flying car power conversion method of all the embodiments described above when working. The flying car power conversion system includes: a land body battery, which is used to power the land body load. A flying body battery, which is used to power the flying body load. A bidirectional power transmission module, which is used to control the power transmission between the land body battery and the flying body battery. The land body battery and the flying body battery are connected through the bidirectional power transmission module. The technical solution of the present invention uses a bidirectional power transmission module to enable bidirectional energy transmission between the land body battery and the flying body battery in the two-part flying car. By quickly coupling or separating the land body battery and the flying body battery without high voltage, the overall power utilization rate of the two-part flying car is improved, the endurance of the driving function is enhanced, and the switching efficiency between the flying function and the land function is optimized, thereby improving the user experience.

[0092] Based on the first embodiment of the flying car power conversion system of the present invention described above, a second embodiment of the flying car power conversion system of the present invention is proposed. Figure 5 , Figure 5 This is a circuit connection diagram of the second embodiment of the flying car power conversion system of the present invention.

[0093] like Figure 5As shown, in this embodiment, the bidirectional power transmission module 10 includes: a first switch S1, a second switch S2, a third switch S3, a fourth switch S4 and an energy storage unit 11;

[0094] The first end of the energy storage unit 11 is respectively connected to the first end of the first switch S1 and the first end of the second switch S2, and the second end of the energy storage unit 11 is respectively connected to the first end of the third switch S3 and the first end of the fourth switch S4; the second end of the first switch S1 is connected to the positive electrode of the land body battery B1; the second end of the second switch S2 is connected to the negative electrode of the land body battery B1; the second end of the third switch S3 is respectively connected to the positive electrode of the flying body battery B2, the second end of the fourth switch S4 and the negative electrode of the flying body battery B2.

[0095] The energy storage unit 11 is used to control the direction of power transmission between the land-based battery B1 and the flying-based battery B2 based on the on / off states of the first switch S1 , the second switch S2 , the third switch S3 , and the fourth switch S4 .

[0096] It should be noted that the first switch S1, the second switch S2, the third switch S3, and the fourth switch S4 can all be switch tubes or a combination of switch tubes and other devices that can realize the conduction and cutoff of the control connection loop, and the energy storage unit 11 can be an inductor or a combination of a device that includes an inductor and can store electric energy and other devices, such as a combination of devices such as an inductor and a coil. In this embodiment, the energy storage unit 11 can be an inductor L0.

[0097] It is easy to understand that by controlling the on-off state of the first switch S1, the second switch S2, the third switch S3 and the fourth switch S4, the direction of power transmission between the land body battery B1 and the flying body battery B2 can be adjusted, and the working state of the bidirectional power transmission module 10 can be changed, thereby changing the working mode of the flying car power conversion system.

[0098] In specific implementation, the working modes of the flying car power conversion system include the following four working modes:

[0099] If the high-voltage land-based battery B1 needs to transmit electric energy to the low-voltage flying-based battery B2, the third switch S3 remains on and the fourth switch S4 remains off, the first switch S1 and the second switch S2 continuously switch between on and off states, and the on and off states of the first switch S1 and the second switch S2 remain inconsistent at the same time, that is, when the first switch S1 is on, the corresponding second switch S2 is off. At this time, when the first switch S1 is on and the second switch S2 is off, the energy storage unit 11 stores the electric energy output by the land-based battery B1, and when the first switch S1 is off and the second switch S2 is on, the energy storage unit 11 transmits the stored electric energy to the flying-based battery B2;

[0100] If the low-voltage land-based battery B1 is required to transmit electric energy to the high-voltage flying-based battery B2, the first switch S1 remains on and the second switch S2 remains off, the third switch S3 and the fourth switch S4 continuously switch between on and off states, and the on and off states of the third switch S3 and the fourth switch S4 remain inconsistent at the same time, that is, when the third switch S3 is on, the corresponding fourth switch S4 is off. At this time, when the fourth switch S4 is on and the third switch S3 is off, the energy storage unit 11 stores the electric energy output by the land-based battery B1, and when the fourth switch S4 is off and the third switch S3 is on, the energy storage unit 11 transmits the stored electric energy to the flying-based battery B2.

[0101] If the low-voltage flying body battery B2 is required to transmit electric energy to the high-voltage land body battery B1, the third switch S3 remains in the on state and the fourth switch S4 remains in the off state, the first switch S1 and the second switch S2 continuously switch between the on state and the off state, and the on-off state of the first switch S1 and the second switch S2 remains inconsistent at the same time, that is, when the first switch S1 is in the on state, the corresponding second switch S2 is in the off state. At this time, when the second switch S2 is on and the first switch S1 is off, the energy storage unit 11 stores the electric energy output by the flying body battery B2, and when the second switch S2 is off and the first switch S1 is on, the energy storage unit 11 transmits the stored electric energy to the land body battery B1.

[0102] If the high-voltage flying body battery B2 needs to transmit electric energy to the low-voltage land body battery B1, the first switch S1 remains in the on state and the second switch S2 remains in the off state, the third switch S3 and the fourth switch S4 continuously switch between the on state and the off state, and the on-off state of the third switch S3 and the fourth switch S4 remain inconsistent at the same time, that is, when the third switch S3 is in the on state, the corresponding fourth switch S4 is in the off state. At this time, when the fourth switch S4 is on and the third switch S3 is off, the energy storage unit 11 stores the electric energy output by the flying body battery B2, and when the fourth switch S4 is off and the third switch S3 is on, the energy storage unit 11 transmits the stored electric energy to the land body battery B1.

[0103] Furthermore, in this embodiment, the flying car electric energy conversion system further includes: a first voltage stabilizing filter module 20 and a second voltage stabilizing filter module 21;

[0104] The first end of the first voltage stabilizing filter module 20 is respectively connected to the positive electrode of the land body battery B1 and the second end of the first switch S1, and the second end of the first voltage stabilizing filter module 20 is respectively connected to the negative electrode of the land body battery B1 and the second end of the second switch S2; the first end of the second voltage stabilizing filter module 21 is respectively connected to the positive electrode of the flying body battery B2 and the second end of the third switch S3, and the second end of the second voltage stabilizing filter module 21 is connected to the negative electrode of the flying body battery B2 and the second end of the fourth switch S4.

[0105] The first voltage stabilization and filtering module 20 is used to stabilize and filter the voltage between the positive electrode and the negative electrode of the land-based battery B1.

[0106] The second voltage stabilization and filtering module 21 is used to stabilize and filter the voltage value between the positive electrode and the negative electrode of the flying body battery B2.

[0107] It is easy to understand that in the process of mutual transmission of electric energy between the land battery B1 and the flying battery B2, since the energy storage unit 11 will repeatedly store and release electric energy, the voltage at both ends of the land battery B1 and the voltage at both ends of the flying battery B2 will change greatly, affecting the power transmission efficiency of the flying car power conversion system, and in serious cases, may cause damage to the entire flying car power conversion system. Therefore, it is necessary to add a first voltage stabilizing filter module 20 at both ends of the land battery B1 to stabilize and filter the voltage at both ends of the land battery B1, and add a second voltage stabilizing filter module 21 at both ends of the flying battery B2 to stabilize and filter the voltage at both ends of the flying battery B2, so that the entire flying car power conversion system can work more stably. In a specific implementation, the first voltage stabilizing filter module 20 can be a first capacitor C1, and the second voltage stabilizing filter module 21 can be a second capacitor C2.

[0108] Furthermore, in this embodiment, the flying car power conversion system further includes: a first battery switch 30, a second battery switch 31, a first pre-charging module 40 and a second pre-charging module 41;

[0109] The first end of the first pre-charging module 40 is connected to the first end of the first voltage stabilizing and filtering module 20, and the second end of the first pre-charging module 40 is connected to the positive electrode of the land-based battery B1; the first end of the first battery switch 30 is connected to the second end of the first voltage stabilizing and filtering module 20, and the second end of the first battery switch 30 is connected to the negative electrode of the land-based battery B1;

[0110] The first end of the second pre-charging module 41 is connected to the first end of the second voltage stabilizing and filtering module 21, and the second end of the second pre-charging module 41 is connected to the positive electrode of the flying body battery B2; the first end of the second battery switch 31 is connected to the second end of the second voltage stabilizing and filtering module 21, and the second end of the second battery switch 31 is connected to the negative electrode of the flying body battery B2;

[0111] The first pre-charging module 40 is used to limit the instantaneous current value flowing through the first voltage stabilizing and filtering module 20 when the first battery switch 30 is turned on;

[0112] The second pre-charging module 41 is used to limit the instantaneous current value flowing through the second voltage stabilizing and filtering module 21 when the second battery switch 31 is turned on.

[0113] It is easy to understand that in this embodiment, the first battery switch 30 may include a first relay K1 for controlling the on-off state of the connection circuit between the land-based battery B1 and the bidirectional power transmission module 10; the second battery switch 31 may include a second relay K2 for controlling the on-off state of the connection circuit between the flying-based battery B2 and the bidirectional power transmission module 10. When both the first battery switch 30 and the second battery switch 31 are in the on state, the entire flying car power conversion system can start working, and then the power transmission between the land-based battery B1 and the flying-based battery B2 is realized by changing the working mode of the flying car power conversion system.

[0114] It should be noted that, in this embodiment, the first pre-charging module 40 may include a high-resistance first resistor R1, a third relay K3, and a fourth relay K4. The first end of the first resistor R1 is connected to the first end of the first voltage stabilizing and filtering module 20 and the first end of the third relay K3, respectively. The second end of the first resistor R1 is connected to the first end of the fourth relay K4. The second end of the fourth relay K4 and the second end of the third relay K3 are connected to the positive electrode of the land-based battery B1. When the first battery switch 30 is turned on (the first relay K1 is closed), the third relay K3 is disconnected and the fourth relay K4 is closed. At this time, the land-based battery B1 forms a connection loop through the fourth relay K4, the first resistor R1, the first voltage stabilizing and filtering module 20, and the first battery switch 30 (the first relay K1) and forms an instantaneous current. The high-resistance first resistor R1 limits the instantaneous current value flowing through the first voltage stabilizing and filtering module 20 to protect the first voltage stabilizing and filtering module 20 from being damaged due to excessive instantaneous current value flowing through. When the instantaneous current value flowing through the first voltage stabilizing and filtering module 20 continues to decrease and remains stable, the third relay K3 is closed, short-circuiting the first resistor R1, so that the voltage between the second end of the first switch S1 and the second end of the second switch S2 rises to the voltage value of the land-based battery, thereby enabling part of the bidirectional power transmission module to start working.

[0115] Correspondingly, the second pre-charging module 41 may include a high-resistance second resistor R2, a fifth relay K5, and a sixth relay K6, wherein the first end of the second resistor R2 is respectively connected to the first end of the second voltage stabilizing filter module 21 and the first end of the fifth relay K5, the second end of the second resistor R2 is connected to the first end of the sixth relay K6, and the second end of the sixth resistor and the second end of the fifth relay K5 are connected to the positive electrode of the flying body battery B2. When the second battery switch 31 is turned on (the second relay K2 is closed), the fifth relay K5 is disconnected and the sixth relay K6 is closed. At this time, the flying body battery B2 forms a connection loop and forms an instantaneous current through the sixth relay K6, the second resistor R2, the second voltage stabilizing filter module 21, and the second battery switch 31 (the second relay K2), and the instantaneous current is formed. The high-resistance second resistor R2 limits the instantaneous current value flowing through the second voltage stabilizing filter module 21 to protect the second voltage stabilizing filter module 21 from being damaged due to excessive instantaneous current value flowing through. When the instantaneous current value flowing through the second voltage stabilizing and filtering module 21 continues to decrease and remains stable, the fifth relay K5 is closed, short-circuiting the second resistor R2, so that the voltage between the second end of the third switch S3 and the second end of the fourth switch S4 rises to the voltage value of the flying body battery, thereby enabling the other part of the bidirectional power transmission module to start working.

[0116] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0117] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0118] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A flying car electric energy conversion method, characterized in that: The flying car electric energy conversion method is applied to a flying car electric energy conversion system, and the flying car electric energy conversion method includes: Determine the direction of power transmission between the land-based battery and the flying-based battery; Based on the electric energy transmission direction, determining the working mode of the electric energy conversion system of the flying car; Based on the working mode, the land-based battery and the flying-based battery are controlled to transfer electric energy.

2. The flying car electric energy conversion method according to claim 1, characterized in that: The step of determining the working mode of the flying car power conversion system based on the power transmission direction includes: When the power transmission direction is from the land-based battery to the flying-based battery, detecting a first voltage value of the land-based battery and a second voltage value of the flying-based battery; When the first voltage value is greater than the second voltage value, the operating mode is determined to be the first operating mode, and the first operating mode is that the high-voltage land-based battery transmits electrical energy to the low-voltage flying-based battery.

3. The flying car electric energy conversion method according to claim 2, characterized in that: After the step of detecting the first voltage value of the land-based battery and the second voltage value of the flying-based battery when the direction of the power transmission is from the land-based battery to the flying-based battery, the method further includes: When the first voltage value is less than the second voltage value, the operating mode is determined to be the second operating mode, and the second operating mode is that the low-voltage land-based battery transmits electrical energy to the high-voltage flying-based battery.

4. The flying car electric energy conversion method according to claim 1, characterized in that: The step of determining the working mode of the electric energy conversion system of the flying car based on the electric energy transmission direction also includes: When the power transmission direction is from the flying body battery to the land body battery, detecting a first voltage value of the land body battery and a second voltage value of the flying body battery; When the second voltage value is greater than the first voltage value, the operating mode is determined to be a third operating mode, and the third operating mode is that the flying body battery with a high voltage transmits electric energy to the land body battery with a low voltage.

5. The flying car electric energy conversion method according to claim 4, characterized in that: After the step of detecting the first voltage value of the land-based battery and the second voltage value of the flying battery when the power transmission direction is from the flying battery to the land-based battery, the method further includes: When the second voltage value is less than the first voltage value, the operating mode is determined to be a fourth operating mode, and the fourth operating mode is that the flying body battery with a low voltage transmits electric energy to the land body battery with a high voltage.

6. The flying car electric energy conversion method according to claim 1, characterized in that: Before the step of controlling the land-based battery and the flying-based battery to transmit electric energy based on the working mode, the step further includes: The connection circuit between the land-based battery and the flying-based battery is connected, and the connection circuit between the land-based battery and the flying-based battery is pre-charged.

7. A flying car power conversion system, characterized in that: The flying car power conversion system adopts the flying car power conversion method according to any one of claims 1 to 6 when working, and the flying car power conversion system includes: A land-based battery, used to supply power to a land-based load; A flying body battery, used to supply power to the flying body load; A bidirectional power transmission module, used to control the power transmission between the land-based battery and the flying-based battery; The land-based battery and the flying-based battery are connected via the bidirectional power transmission module.

8. The flying car electric energy conversion system as claimed in claim 7, characterized in that: The bidirectional power transmission module includes: a first switch, a second switch, a third switch, a fourth switch and an energy storage unit; The first end of the energy storage unit is respectively connected to the first end of the first switch and the first end of the second switch, and the second end of the energy storage unit is respectively connected to the first end of the third switch and the first end of the fourth switch; the second end of the first switch is connected to the positive electrode of the land-based battery; the second end of the second switch is connected to the negative electrode of the land-based battery; the second end of the third switch is respectively connected to the positive electrode of the flying battery, the second end of the fourth switch and the negative electrode of the flying battery; The energy storage unit is used to control the direction of power transmission between the land-based battery and the flying-based battery based on the on / off states of the first switch, the second switch, the third switch, and the fourth switch.

9. The flying car electric energy conversion system as claimed in claim 8, characterized in that: The flying car electric energy conversion system further includes: a first voltage stabilizing filter module and a second voltage stabilizing filter module; The first end of the first voltage stabilizing filter module is respectively connected to the positive electrode of the land-based battery and the second end of the first switch, and the second end of the first voltage stabilizing filter module is respectively connected to the negative electrode of the land-based battery and the second end of the second switch; the first end of the second voltage stabilizing filter module is respectively connected to the positive electrode of the flying battery and the second end of the third switch, and the second end of the second voltage stabilizing filter module is connected to the negative electrode of the flying battery and the second end of the fourth switch; The first voltage stabilization and filtering module is used to stabilize and filter the voltage between the positive electrode and the negative electrode of the land vehicle battery; The second voltage stabilization and filtering module is used to stabilize and filter the voltage value between the positive electrode and the negative electrode of the flying body battery.

10. The flying car electric energy conversion system according to claim 9, characterized in that: The flying car power conversion system also includes: a first battery switch, a second battery switch, a first pre-charging module and a second pre-charging module; The first end of the first pre-charging module is connected to the first end of the first voltage stabilizing and filtering module, and the second end of the first pre-charging module is connected to the positive electrode of the land-based battery; the first end of the first battery switch is connected to the second end of the first voltage stabilizing and filtering module, and the second end of the first battery switch is connected to the negative electrode of the land-based battery; The first end of the second pre-charging module is connected to the first end of the second voltage stabilizing and filtering module, and the second end of the second pre-charging module is connected to the positive electrode of the flying body battery; the first end of the second battery switch is connected to the second end of the second voltage stabilizing and filtering module, and the second end of the second battery switch is connected to the negative electrode of the flying body battery; The first pre-charging module is used to limit the instantaneous current value flowing through the first voltage stabilizing and filtering module when the first battery switch is turned on; The second pre-charging module is used to limit the instantaneous current value flowing through the second voltage stabilizing and filtering module when the second battery switch is turned on.

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