Capacitor charge and discharge control system and charge and discharge control method for electric vehicle

Abstract

The invention relates to the technical field of electric vehicle energy-saving equipment, and particularly discloses a capacitor charging and discharging control system and a capacitor charging and discharging control method for an electric vehicle, and the capacitor charging and discharging control system for the electric vehicle comprises a first capacitor power supply module and a second capacitor power supply module. The purpose of continuously supplying electric energy to the hub motor is achieved in the mode that the first capacitor and the second capacitor supply power to the hub motor in turn, and meanwhile, the third capacitor and the fourth capacitor which are charged can also supply electric energy to the hub motor. The capacitor charging and discharging control system for the electric vehicle has the advantages of being rapid in charging and discharging, strong in power, free of burning explosion, safe, reliable, light in weight, long in service life and free of seasonal influence. And the first capacitor power supply module and the second capacitor power supply module are connected to form a push-pull alternating output driving circuit, so that the problem of poor cruising ability of the electric vehicle in the prior art is effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicle energy-saving equipment, and in particular to a capacitor charging and discharging control system and a charging and discharging control method for electric vehicles. Background Art

[0002] At present, electric vehicles are popular among users due to their energy saving, environmental protection, simple operation, convenience and low operating cost. Among them, the power supply of existing electric vehicles and other equipment adopts a single battery charging and discharging structure, which requires a long charging time and a short sustainable working time, which makes the electric vehicle's travel distance short and unable to travel a long distance, and the endurance is poor; and when the battery is frequently charged, accidents such as spontaneous combustion and charging explosion often occur. Therefore, it is necessary to design an electric vehicle with long battery life. Summary of the invention

[0003] The purpose of the present invention is to provide a capacitor charging and discharging control system and a charging and discharging control method for electric vehicles to solve the problem of poor endurance of electric vehicles in the prior art.

[0004] On the one hand, the present invention provides a capacitor charging and discharging control system for an electric vehicle, the capacitor charging and discharging control system for an electric vehicle comprises an electric vehicle body and a hub motor and a generator installed on the electric vehicle body, the hub motor can drive the electric vehicle body to move, the generator can convert the kinetic energy of the hub motor into electrical energy, a first capacitor power supply module comprises a first capacitor, a second capacitor and a first time relay, the positive electrode of the first capacitor is electrically connected to a contact of the first time relay, the negative electrode of the first capacitor is electrically connected to the hub motor, the positive electrode of the second capacitor is electrically connected to another contact of the first time relay, the negative electrode of the second capacitor is electrically connected to the hub motor, and the first time relay can control the on and off of the first capacitor, the second capacitor and the hub motor respectively; the second capacitor power supply module comprises a main transmission circuit, a third capacitor, a fourth capacitor The positive electrode of the third capacitor is electrically connected to a contact of the second time relay and the generator, the negative electrode of the third capacitor is electrically connected to the hub motor and one end of the main transmission circuit, the positive electrode of the fourth capacitor is electrically connected to the other contact of the second time relay and the generator, the negative electrode of the fourth capacitor is electrically connected to the hub motor and one end of the main transmission circuit, the second time relay can control the on and off of the third capacitor, the fourth capacitor and the generator respectively, the other end of the main transmission circuit is electrically connected to the first time relay, and the generator can supply power to the third capacitor and the fourth capacitor; wherein the first capacitor and the second capacitor can supply power to the hub motor in turn through the first time relay, and the generator can charge the third capacitor and the fourth capacitor in turn through the second time relay while supplying power to the first capacitor or the second capacitor through the main transmission circuit.

[0005] As an optional technical solution for a capacitor charging and discharging control system for an electric vehicle, the capacitor charging and discharging control system for an electric vehicle also includes a first voltage adjustment circuit, which is arranged between the first time relay and the hub motor, and the first voltage adjustment circuit can adjust the voltage value flowing through.

[0006] As an optional technical solution for a capacitor charging and discharging control system for an electric vehicle, the capacitor charging and discharging control system for an electric vehicle also includes a second voltage adjustment circuit, which is arranged between the second time relay and the generator, and the second voltage adjustment circuit can adjust the voltage value flowing through.

[0007] As an optional technical solution for a capacitor charging and discharging control system for an electric vehicle, the first capacitor, the second capacitor, the third capacitor, and the fourth capacitor are all farad capacitors.

[0008] As an optional technical solution for a capacitor charge and discharge control system for an electric vehicle, the capacity of the first capacitor and the second capacitor is 8-12F, and the capacity of the third capacitor and the fourth capacitor is 18-22F.

[0009] On the other hand, the present invention provides a charging and discharging control method, which is applied to a capacitor charging and discharging control system for an electric vehicle in any of the above-mentioned schemes. The charging and discharging control method includes: using a first capacitor and a second capacitor to supply power to a hub motor in turn, and the generator supplies power to the first capacitor or the second capacitor through a main transmission circuit; the generator charges the third capacitor and the fourth capacitor in turn, and the fully charged third capacitor or the fourth capacitor can supply power to the hub motor in turn.

[0010] As an optional technical solution of the charge and discharge control method, the first capacitor and the second capacitor supply power to the hub motor in turn, and the generator supplies power to the first capacitor or the second capacitor that is short of power through the main transmission circuit, including:

[0011] The first time relay controls the first capacitor to be connected to the wheel hub motor, and controls the second capacitor to be disconnected from the wheel hub motor, the generator supplies power to the second capacitor through the main transmission circuit, and the first capacitor supplies power to the wheel hub motor;

[0012] After the preset time, the first time relay controls the first capacitor to be disconnected from the wheel hub motor, and controls the second capacitor to be connected to the wheel hub motor. The generator supplies power to the first capacitor through the main transmission circuit, and the second capacitor supplies power to the wheel hub motor.

[0013] As an optional technical solution of the charge and discharge control method, the generator charges the third capacitor and the fourth capacitor alternately, including:

[0014] The second time relay controls the third capacitor to be connected to the generator, and controls the fourth capacitor to be disconnected from the generator, so that the generator supplies power to the third capacitor;

[0015] After the preset time, the second time relay controls the third capacitor to be disconnected from the generator, and controls the fourth capacitor to be connected to the generator, and the generator supplies power to the fourth capacitor.

[0016] As an optional technical solution of the charge and discharge control method, the charge and discharge control method also includes:

[0017] The voltage delivered to the wheel hub motor can be adjusted to 48V by using the first voltage adjustment circuit in the capacitor charge and discharge control system for an electric vehicle.

[0018] As an optional technical solution of the charge and discharge control method, the charge and discharge control method also includes:

[0019] The voltage transmitted to the third capacitor and the fourth capacitor can be adjusted to 48V by using the second voltage regulating circuit in the capacitor charging and discharging control system for the electric vehicle.

[0020] The beneficial effects of the present invention are:

[0021] The present invention provides a capacitor charging and discharging control system for electric vehicles, which includes a first capacitor power supply module and a second capacitor power supply module, wherein the first capacitor power supply module includes a first capacitor, a second capacitor and a first time relay, and the second capacitor power supply module includes a main transmission circuit, a third capacitor, a fourth capacitor and a second time relay. The capacitor charging and discharging control system for electric vehicles of the present invention can realize the purpose of continuously providing electric energy for the hub motor by the first capacitor and the second capacitor alternately supplying power to the hub motor, and the generator can charge the third capacitor and the fourth capacitor alternately through the second time relay while supplying power to the first capacitor or the second capacitor through the main transmission circuit, so that sufficient time can be provided for the charging and discharging of the first capacitor or the second capacitor, and at the same time, the charged third capacitor and the fourth capacitor can also provide electric energy for the hub motor. The capacitor charging and discharging control system for electric vehicles using this scheme has the characteristics of rapid charging, rapid discharge, strong power, non-explosion, safety and reliability, light weight, long life, and no seasonal influence. The first capacitor power supply module and the second capacitor power supply module are connected to form a "push-pull" alternating output drive circuit, and the peak period of "rapid discharge" of the first capacitor power supply module and the second capacitor power supply module is intercepted as the source of the hub motor drive, which effectively solves the problem of poor endurance of electric vehicles in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 14 is a circuit diagram of a capacitor charging and discharging control system for an electric vehicle in an embodiment of the present invention.

[0023] In the figure:

[0024] 1. Hub motor;

[0025] 2. Generator;

[0026] 3. First capacitor power supply module; 31. First capacitor; 32. Second capacitor; 33. First time relay;

[0027] 4. Second capacitor power supply module; 41. Main transmission circuit; 42. Third capacitor; 43. Fourth capacitor;

[0028] 5. A first voltage regulating circuit;

[0029] 6. Second voltage adjustment circuit. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] like Figure 1 As shown, this embodiment provides a capacitor charging and discharging control system for an electric vehicle, which includes an electric vehicle body and a hub motor 1 and a generator 2 installed on the electric vehicle body. The hub motor 1 can drive the electric vehicle body to move, and the generator 2 can convert the kinetic energy of the hub motor 1 into electrical energy. The capacitor charging and discharging control system for an electric vehicle also includes: a first capacitor power supply module 3 and a second capacitor power supply module 4. Among them, the first capacitor power supply module 3 includes a first capacitor 31, a second capacitor 32 and a first time relay 33. The positive electrode of the first capacitor 31 is electrically connected to a contact of the first time relay 33, the negative electrode of the first capacitor 31 is electrically connected to the hub motor 1, the positive electrode of the second capacitor 32 is electrically connected to another contact of the first time relay 33, and the negative electrode of the second capacitor 32 is electrically connected to the hub motor 1. The first time relay 33 can control the on and off of the first capacitor 31, the second capacitor 32 and the hub motor 1 respectively. In this way, the first capacitor 31 and the second capacitor 32 can be used to supply power to the hub motor 1 in turn.

[0035] In addition, the second capacitor power supply module 4 includes a main transmission circuit 41, a third capacitor 42, a fourth capacitor 43, and a second time relay. The positive electrode of the third capacitor 42 is electrically connected to a contact of the second time relay and the generator 2, the negative electrode of the third capacitor 42 is electrically connected to the wheel hub motor 1 and one end of the main transmission circuit 41, the positive electrode of the fourth capacitor 43 is electrically connected to another contact of the second time relay and the generator 2, the negative electrode of the fourth capacitor 43 is electrically connected to the wheel hub motor 1 and one end of the main transmission circuit 41, the second time relay can control the on and off of the third capacitor 42, the fourth capacitor 43 and the generator 2 respectively, the other end of the main transmission circuit 41 is electrically connected to the first time relay 33, and the generator 2 can supply power to the third capacitor 42 and the fourth capacitor 43; in this way, the generator 2 can charge the third capacitor 42 and the fourth capacitor 43 in turn through the second time relay, and supply power to the first capacitor 31 or the second capacitor 32 through the main transmission circuit 41.

[0036] By adopting the capacitor charging and discharging control system for electric vehicles of the present invention, the first capacitor 31 and the second capacitor 32 can be used to supply power to the hub motor 1 in turn, so as to achieve the purpose of continuously providing electric energy to the hub motor 1, and the generator 2 can charge the third capacitor 42 and the fourth capacitor 43 in turn through the second time relay, and supply power to the first capacitor 31 or the second capacitor 32 through the main transmission circuit 41, so as to provide sufficient time for the charging and discharging of the first capacitor 31 or the second capacitor 32, and at the same time, the charged third capacitor 42 and the fourth capacitor 43 can also provide electric energy to the hub motor 1. The capacitor charging and discharging control system for electric vehicles of the present scheme has the characteristics of rapid charging, rapid discharge, strong power, non-explosion, safety and reliability, light weight, long life, and no seasonal influence. And the first capacitor power supply module 3 and the second capacitor power supply module 4 are connected into a "push-pull" alternating output drive circuit, and the peak period of "rapid discharge" of the first capacitor power supply module 3 and the second capacitor power supply module 4 is intercepted as the source of the hub motor 1 drive, which effectively solves the problem of poor endurance of electric vehicles in the prior art.

[0037] Furthermore, the capacitor charge and discharge control system for an electric vehicle further includes a first voltage regulating circuit 5. By arranging the first voltage regulating circuit 5 between the first time relay 33 and the wheel hub motor 1, the voltage flowing through the first time relay 33 is regulated to the voltage value required by the wheel hub motor 1 by the first voltage regulating circuit 5.

[0038] In this embodiment, since the voltage provided by the first capacitor 31 or the second capacitor 32 is 24V, the voltage can be adjusted to 48V by the first voltage adjustment circuit 5 and then transmitted to the hub motor 1 .

[0039] The main working process is as follows: the 24V working voltage is output to the NC contact of the first time relay 33 through the common contact, and after the common point at the left end of the first time relay 33 is internally connected, the 24V working voltage is output to charge the first capacitor 31. At the same time, the 24V voltage of the second capacitor 32 is output to the input end of the first voltage adjustment circuit 5 through the common point at the right end of the first time relay 33 and the internally connected NC contact, and is adjusted by the first voltage adjustment circuit 5 to output a 48V voltage to drive the wheel hub motor 1 to rotate.

[0040] After 30 seconds, the first time relay 33 turns back to close. When the first time relay 33 is in the closed state, the first capacitor 31 connects the left NO contact through the left common point, and the output 24V voltage is sent to the input end of the first voltage adjustment circuit 5. After adjustment by the first voltage adjustment circuit 5, the output 48V voltage drives the hub motor 1 to rotate. At this time, the working voltage 24V is sent to the NO contact at the right end of the first time relay 33, and is internally connected to the common point at the right end of the first time relay 33, and input to charge the second capacitor 32. This cycle repeats.

[0041] Specifically, the capacitor charge and discharge control system for electric vehicles also includes a second voltage regulating circuit 6. The second voltage regulating circuit 6 is also arranged between the second time relay and the generator 2, so that the voltage value flowing through can be adjusted by using the second voltage regulating circuit 6.

[0042] It should be noted that the power generation voltage of the generator 2 is generated by driving the rotation of the rotor of the generator 2 through the transmission structure of the planetary gear of the main shaft of the hub motor 1, and driving the rotor of the generator 2 to rotate at a speed ratio of 4:1. The generator 2 belongs to the type of "disc-type resistance-free generator", which is characterized by resistance-free rotation, simple structure, and easy processing and manufacturing. The rotor is made of 24 strong neodymium magnets in a double disk. The stator is made of 18 sets of coils. The output voltage of the generator 2 is 0-86 volts. The rotation of the generator 2 is driven by the transmission main shaft of the hub motor 1. The speed ratio of the generator 2 to the hub motor 1 is 4:1, and the rotation speed of the generator 2 increases and decreases synchronously according to the speed of the hub motor 1. The speed of the generator 2 can reach up to 1600 rpm. After effective combination with the second voltage adjustment circuit 6, the generator 2 outputs a more satisfactory output power. For example: when the hub motor 1 is controlled to run at medium speed, for example, when the running speed is 10KM / h, the hub motor 1 consumes 2 amperes of current and the generator 2 outputs 4 amperes of current. The voltage is adjusted to 56 V by the second voltage regulating circuit 6. The output current of the generator 2 is twice the current consumed by the hub motor 1.

[0043] In this embodiment, the first capacitor 31, the second capacitor 32, the third capacitor 42, and the fourth capacitor 43 are all farad capacitors. In this way, the farad capacitor has the advantages of fast charging speed, long cycle life, high energy conversion efficiency, simple and convenient use, and environmental protection.

[0044] Specifically, the capacity of the first capacitor 31 and the second capacitor 32 is 8-12F, and the capacity of the third capacitor 42 and the fourth capacitor 43 is 18-22F. In this way, the first capacitor 31 and the second capacitor 32 can be used to power the hub motor 1 first, and the capacity can be set according to the actual situation. The capacity of the first capacitor 31 and the second capacitor 32 can be selected as 8F, 9F, 10F, 11F or 12F, etc. Similarly, the capacity of the third capacitor 42 and the fourth capacitor 43 can also be selected according to the actual situation. The capacity of the third capacitor 42 and the fourth capacitor 43 can be selected as 18F, 19F, 20F, 21F or 22F, etc.

[0045] This embodiment also provides a charging and discharging control method, which is applied to the capacitor charging and discharging control system for an electric vehicle in the above-mentioned scheme. The charging and discharging control method includes: using the first capacitor 31 and the second capacitor 32 to supply power to the hub motor 1 in turn, and the generator 2 supplies power to the first capacitor 31 or the second capacitor 32 through the main transmission circuit 41; the generator 2 charges the third capacitor 42 and the fourth capacitor 43 in turn, and the fully charged third capacitor 42 or the fourth capacitor 43 can supply power to the hub motor 1 in turn.

[0046] This method can supply power to the hub motor 1 by the first capacitor 31 and the second capacitor 32 in turn, and the generator 2 can charge the third capacitor 42 and the fourth capacitor 43 in turn. This arrangement has the characteristics of rapid charging, rapid discharge, strong power, non-explosion, safety and reliability, light weight, long life, and no seasonal influence. The first capacitor power supply module 3 and the second capacitor power supply module 4 are connected to form a "push-pull" alternating output drive circuit, and the peak period of "rapid discharge" of the first capacitor power supply module 3 and the second capacitor power supply module 4 is intercepted as the source of the hub motor 1 drive, which effectively solves the problem of poor endurance of electric vehicles in the prior art.

[0047] Among them, the first capacitor 31 and the second capacitor 32 supply power to the hub motor 1 in turn, and the generator 2 supplies power to the first capacitor 31 or the second capacitor 32 that is short of power through the main transmission circuit 41. The specific working process is as follows: the first time relay 33 controls the first capacitor 31 to be connected to the hub motor 1, and controls the second capacitor 32 to be disconnected from the hub motor 1, the generator 2 supplies power to the second capacitor 32 through the main transmission circuit 41, and the first capacitor 31 supplies power to the hub motor 1; after the preset time, the first time relay 33 controls the first capacitor 31 to be disconnected from the hub motor 1, and controls the second capacitor 32 to be connected to the hub motor 1, the generator 2 supplies power to the first capacitor 31 through the main transmission circuit 41, and the second capacitor 32 supplies power to the hub motor 1.

[0048] Furthermore, the working process of the generator 2 charging the third capacitor 42 and the fourth capacitor 43 in turn is as follows: the second time relay controls the third capacitor 42 to be connected to the generator 2, and controls the fourth capacitor 43 to be disconnected from the generator 2, and the generator 2 supplies power to the third capacitor 42; after the preset time, the second time relay controls the third capacitor 42 to be disconnected from the generator 2, and controls the fourth capacitor 43 to be connected to the generator 2, and the generator 2 supplies power to the fourth capacitor 43.

[0049] In this embodiment, the charge and discharge control method further includes: using the first voltage adjustment circuit 5 in the capacitor charge and discharge control system for the electric vehicle to adjust the voltage delivered to the hub motor 1 to 48V.

[0050] Similarly, the charge and discharge control method further includes: using the second voltage adjustment circuit 6 in the capacitor charge and discharge control system for the electric vehicle to adjust the voltage delivered to the third capacitor 42 and the fourth capacitor 43 to 48V. In this way, the voltages obtained by the third capacitor 42 and the fourth capacitor 43 are 24V respectively.

[0051] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A capacitor charging and discharging control system for an electric vehicle, comprising an electric vehicle body and a wheel hub motor (1) and a generator (2) mounted on the electric vehicle body, wherein the wheel hub motor (1) can drive the electric vehicle body to move, and the generator (2) can convert the kinetic energy of the rotation of the wheel hub motor (1) into electrical energy, characterized in that: The capacitor charging and discharging control system for an electric vehicle also includes: A first capacitor power supply module (3) comprises a first capacitor (31), a second capacitor (32) and a first time relay (33); the positive electrode of the first capacitor (31) is electrically connected to a contact of the first time relay (33); the negative electrode of the first capacitor (31) is electrically connected to the wheel hub motor (1); the positive electrode of the second capacitor (32) is electrically connected to another contact of the first time relay (33); the negative electrode of the second capacitor (32) is electrically connected to the wheel hub motor (1); and the first time relay (33) can respectively control the on and off of the first capacitor (31), the second capacitor (32) and the wheel hub motor (1); A second capacitor power supply module (4), comprising a main transmission circuit (41), a third capacitor (42), a fourth capacitor (43) and a second time relay, wherein the positive electrode of the third capacitor (42) is electrically connected to a contact of the second time relay and the generator (2), the negative electrode of the third capacitor (42) is electrically connected to the wheel hub motor (1) and one end of the main transmission circuit (41), the positive electrode of the fourth capacitor (43) is electrically connected to another contact of the second time relay and the generator (2), the negative electrode of the fourth capacitor (43) is electrically connected to the wheel hub motor (1) and one end of the main transmission circuit (41), the second time relay can respectively control the on and off of the third capacitor (42), the fourth capacitor (43) and the generator (2), the other end of the main transmission circuit (41) is electrically connected to the first time relay (33), and the generator (2) can supply power to the third capacitor (42) and the fourth capacitor (43); The first capacitor (31) and the second capacitor (32) can supply power to the hub motor (1) in turn through the first time relay (33), and the generator (2) can charge the third capacitor (42) and the fourth capacitor (43) in turn through the second time relay while supplying power to the first capacitor (31) or the second capacitor (32) through the main transmission circuit (41).

2. The capacitor charging and discharging control system for electric vehicles according to claim 1, characterized in that: The capacitor charging and discharging control system for an electric vehicle further comprises a first voltage regulating circuit (5), wherein the first voltage regulating circuit (5) is arranged between the first time relay (33) and the wheel hub motor (1), and the first voltage regulating circuit (5) is capable of adjusting a voltage value flowing therethrough.

3. The capacitor charging and discharging control system for electric vehicles according to claim 1, characterized in that: The capacitor charging and discharging control system for an electric vehicle further comprises a second voltage regulating circuit (6), wherein the second voltage regulating circuit (6) is arranged between the second time relay and the generator (2), and the second voltage regulating circuit (6) is capable of adjusting a voltage value flowing therethrough.

4. The capacitor charging and discharging control system for electric vehicles according to claim 1, characterized in that: The first capacitor (31), the second capacitor (32), the third capacitor (42), and the fourth capacitor (43) are all Farad capacitors.

5. The capacitor charging and discharging control system for electric vehicles according to claim 1, characterized in that: The capacity of the first capacitor (31) and the second capacitor (32) is 8-12F, and the capacity of the third capacitor (42) and the fourth capacitor (43) is 18-22F.

6. A charge and discharge control method, characterized in that: Applicable to the capacitor charging and discharging control system for an electric vehicle according to any one of claims 1 to 5, the charging and discharging control method comprising: The first capacitor (31) and the second capacitor (32) are used to supply power to the hub motor (1) in turn, and the generator (2) supplies power to the first capacitor (31) or the second capacitor (32) through the main transmission circuit (41); The generator (2) charges the third capacitor (42) and the fourth capacitor (43) in turn, and the fully charged third capacitor (42) or the fourth capacitor (43) can supply power to the hub motor (1) in turn.

7. The charge and discharge control method according to claim 6, characterized in that: The first capacitor (31) and the second capacitor (32) supply power to the hub motor (1) in turn, and the generator (2) supplies power to the first capacitor (31) or the second capacitor (32) which is short of power through the main transmission circuit (41), comprising: The first time relay (33) controls the first capacitor (31) to be connected to the wheel hub motor (1), and controls the second capacitor (32) to be disconnected from the wheel hub motor (1); the generator (2) supplies power to the second capacitor (32) through the main transmission circuit (41); and the first capacitor (31) supplies power to the wheel hub motor (1); After a preset time, the first time relay (33) controls the first capacitor (31) to be disconnected from the wheel hub motor (1), and controls the second capacitor (32) to be connected to the wheel hub motor (1), the generator (2) supplies power to the first capacitor (31) through the main transmission circuit (41), and the second capacitor (32) supplies power to the wheel hub motor (1).

8. The charge and discharge control method according to claim 6, characterized in that: The generator (2) charging the third capacitor (42) and the fourth capacitor (43) in turn comprises: The second time relay controls the third capacitor (42) to be connected to the generator (2), and controls the fourth capacitor (43) to be disconnected from the generator (2), so that the generator (2) supplies power to the third capacitor (42); After a preset time, the second time relay controls the third capacitor (42) to be disconnected from the generator (2), and controls the fourth capacitor (43) to be connected to the generator (2), so that the generator (2) supplies power to the fourth capacitor (43).

9. The charge and discharge control method according to claim 6, characterized in that: The charge and discharge control method further includes: The first voltage regulating circuit (5) in the capacitor charging and discharging control system for an electric vehicle can be used to adjust the voltage transmitted to the wheel hub motor (1) to 48V.

10. The charge and discharge control method according to claim 6, characterized in that: The charge and discharge control method further includes: The second voltage regulating circuit (6) in the capacitor charge and discharge control system for an electric vehicle can be used to adjust the voltage transmitted to the third capacitor (42) and the fourth capacitor (43) to 48V.

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