CN107364354A - A kind of electric automobile continuation of the journey device and electric automobile - Google Patents

Abstract

The invention provides an electric vehicle endurance device and an electric vehicle, relating to the technical field of electric vehicles, including a power generation mechanism, a motor and an energy storage assembly; the power generation mechanism includes a wheel linkage rod and a generator, and the wheel linkage rod is used to drive driven wheels to rotate The wheel linkage rod is connected with the rotor of the generator for driving the rotor to rotate; the generator is electrically connected with the energy storage assembly, and the energy storage assembly is electrically connected with the motor; the motor is used to drive the drive shaft of the driving wheel to rotate. In the above technical solution, the electric energy generated when the wheel linkage lever rotates can be stored in the energy storage assembly, and the electric motor can use the electric energy stored in the energy storage assembly to continue to drive and rotate the wheel linkage lever of the electric vehicle when needed, and then Just be able to make electric vehicle continue sailing.

Description

A battery life device for an electric vehicle and the electric vehicle

technical field

The invention relates to the technical field of electric vehicles, in particular to an electric vehicle endurance device and the electric vehicle.

Background technique

An electric vehicle (BEV) refers to a vehicle that is powered by a vehicle-mounted power supply, drives the wheels with a motor, and meets the requirements of road traffic and safety regulations. Because the impact on the environment is smaller than that of traditional cars, its prospects are widely optimistic, but the current technology of electric vehicles is still immature. This immaturity is not only in the technology of electric vehicles themselves, but also in the use of electric vehicles.

For example, since electric vehicles are driven by electricity, the energy storage components equipped with them need to be charged regularly, and the charging capacity of the energy storage components has a fixed amount. During the charging process, it is not like traditional vehicles, just refuel directly. , its charging requires a certain process, so its important disadvantages are weak battery life and long charging time, which will cause users to waste a lot of precious time and the government will invest heavily in charging piles to satisfy consumers, and will also cause waste of road resources. The phenomenon of queuing and congestion is formed, which wastes effective road resources.

The shortcoming of this kind of cruising range is that the user has no sense of security when running long distances, and there is a risk of breaking down at any time. Electric vehicles are no better than gasoline vehicles. Gasoline vehicles break down without fuel and only need to fill up gasoline to continue driving. Next refueling You can continue to refuel at the station, and if the electric vehicle is out of power halfway, you can use the backup battery, but the distance to the next charging station is still uncertain, because the government will not be able to popularize charging stations in a short period of time, so a trailer is required. As a result, consumers are discouraged from using electric vehicles and cannot be widely used.

At present, the electric vehicles used in the market require the government to invest heavily in the construction of charging stations and other supporting facilities. The high operating costs of the industry are unsustainable, which hinders the popularization and development of electric vehicles, and solves the problem of battery life It is the desire of consumers, and it is also a major issue that every country in the world is trying to solve.

Contents of the invention

The object of the present invention is to provide an electric vehicle battery life device and an electric vehicle, so as to solve the technical problem of the short battery life of the electric vehicle existing in the prior art.

An electric vehicle endurance device provided by the present invention includes a power generating mechanism, a motor and an energy storage component;

The power generating mechanism includes a wheel linkage lever and a generator, and the wheel linkage lever is used to connect with driven wheels; wherein, the wheel linkage lever is connected to the rotor of the generator, and is used to drive the rotor to rotate;

The generator is electrically connected to the energy storage assembly, and the energy storage assembly is electrically connected to the electric motor;

The electric motor is used to drive the drive shaft of the driving wheel to rotate.

In the above technical solution, when the electric vehicle is running, the rotation of the wheels will cause the wheel linkage lever to rotate together, so as the electric vehicle moves, the wheel linkage lever will transmit this rotating power to the power generator The rotor of the machine drives the rotor to rotate.

When the electric vehicle is running, the driven wheel rotates the wheel linkage lever when the driven wheel rubs against the ground, and the electric energy generated by the generator is stored in the energy storage assembly. When needed, the electric motor can use the energy storage assembly to store The electric energy drives the driving of the electric vehicle. During the driving process, the electric vehicle uses the electric energy in the energy storage component to drive the electric vehicle, so that the electric vehicle can continue to sail without entering the charging pile for charging. This structure greatly increases the battery life of the electric vehicle. The ability to use the mechanical energy of the wheel rotation of the car to first convert it into electrical energy, and then convert it into mechanical energy again to drive the wheel of the car, which relieves the pressure of charging the electric car and saves the government a lot of manpower and material resources.

Further, preferably, the energy storage assembly includes a first battery and a second battery;

Both the first storage battery and the second storage battery are electrically connected to the generating mechanism, and are used for storing electric energy generated by the generating mechanism.

In the above technical solution, the electric vehicle automatically selects the energy storage battery with high power for driving during driving. When the first storage battery is almost out of power, the electric vehicle automatically activates the second storage battery for driving. When the first battery needs to be replenished, press the charging button and the driven wheel will drive the linkage lever to drive the generator to supplement the first battery, and then the two energy storage batteries can continue to sail without entering the charging pile. to charge.

Further, in an embodiment of the present invention, the battery life device of the electric vehicle further includes an alternate charging controller;

The alternating charge controller is connected between the energy storage component and the power generating mechanism.

In the above technical solution, the alternate charging controller can adjust the charging of the first storage battery and the second storage battery.

Further, in an embodiment of the present invention, the electric vehicle endurance device further includes a transmission mechanism;

The transmission mechanism includes a linkage rod redirector, a drive shaft and a gearbox;

The linkage rod diverter is connected to the wheel linkage rod, and the gearbox is connected to the generator: wherein, the linkage rod diverter and the gearbox are drivingly connected through the drive shaft.

In the above technical solution, the transmission mechanism can be used to transmit the power between the wheel linkage lever and the generator, mainly through the transmission mechanism to adjust the power between the wheel linkage lever and the generator. Positional relationship, so that the two can be reasonably distributed on the chassis of the car.

Further, in an embodiment of the present invention, the battery life device of the electric vehicle also includes a power detection mechanism;

The power detection mechanism includes a power detection module, a processor and a display;

The power detection module is electrically connected to the energy storage component, and at the same time, both the processor and the display are electrically connected to the power detection module.

In the above technical solution, the power detection mechanism can detect the remaining power of the energy storage component in real time, and automatically switch the battery with high energy storage for use, and remind the user of the power.

Further, in an embodiment of the present invention, the battery life device of the electric vehicle also includes a charging mechanism;

The charging mechanism includes at least one charging module and a charging interface, one end of the charging module is connected to the energy storage component, and the other end of the charging module is connected to the charging interface;

The charging interface is used for external charging power supply.

In the above technical solution, the charging mechanism can also charge the energy storage component to supplement electric energy.

Further, in an embodiment of the present invention, the battery life device of the electric vehicle also includes a solar charging mechanism;

The solar charging mechanism includes at least one solar charging board, and the solar charging board is electrically connected to the energy storage component.

In the above technical solution, the solar charging mechanism can also use solar energy to charge the energy storage component.

Further, in an embodiment of the present invention, the solar charging mechanism further includes a hinged bracket;

The solar charging board is fixed on the hinged bracket for being connected to the front cover of the car through the hinged bracket.

In the above technical solution, the hinged bracket can adjust the angle of the solar charging board to obtain a larger solar irradiation area.

Further, in an embodiment of the present invention, the battery life device of the electric vehicle further includes a controller;

The controller is connected with the gearbox and the driving shaft for controlling the connection and disconnection between the gearbox and the driving shaft.

In the above technical solution, when the controller controls the connection between the gearbox and the drive shaft, the gearbox separates the rotation of the drive shaft from the generator, and at the same time, the conversion of the gears of the gearbox greatly reduces the time required for the drive shaft to drive the generator to rotate. resistance, the rotational mechanical energy of the driven wheels can be transmitted to the generator through the drive shaft, and the generator can generate electricity; when the controller controls the separation of the gearbox and the drive shaft, it can stop charging the generator , so that whether to charge or not can be controlled automatically or manually.

Further, in an embodiment of the present invention, the battery life device of the electric vehicle further includes an electric energy display assembly;

The electric energy display component is electrically connected with the energy storage component, and is used to display the remaining power of the energy storage component.

The present application also provides an electric vehicle, including a vehicle body and the battery life device of the electric vehicle.

In the above technical solution, after the electric vehicle adopts the electric vehicle endurance device, it can use the mechanical energy generated by the rotation of the wheels during the driving of the electric vehicle to convert it into electrical energy and store it, and then continue to use the stored energy in turn. Electric energy is used to drive electric vehicles forward, thus improving the battery life of electric vehicles.

Description of drawings

In order to more clearly illustrate the specific implementation of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the specific implementation or description of the prior art. Obviously, the accompanying drawings in the following description The drawings show some implementations of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative work.

Fig. 1 is a schematic diagram 1 of the installation structure of an electric vehicle endurance device provided by an embodiment of the present invention;

Fig. 2 is a schematic diagram 2 of the installation structure of an electric vehicle endurance device provided by an embodiment of the present invention;

Fig. 3 is a schematic diagram of the power connection structure of the power detection mechanism provided by an embodiment of the present invention;

Fig. 4 is a schematic diagram of a power connection structure of a charging mechanism provided by an embodiment of the present invention;

Fig. 5 is a schematic diagram of a power connection structure of a solar charging mechanism provided by an embodiment of the present invention.

Reference signs:

1-generating mechanism; 2-electric motor; 3-energy storage component; 4-transmission mechanism; 5-power detection mechanism; 6-charging mechanism; 7-solar charging mechanism; 8-car body;

11-wheel linkage lever; 12-generator;

31-the first storage battery; 32-the second storage battery; 33-the charging controller in turn;

41- linkage rod reversing device; 42- drive shaft; 43- gearbox;

51-power detection module; 52-processor; 53-the display;

61-charging module; 62-charging interface;

71 - Solar charging panel.

detailed description

The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

Fig. 1 is a schematic diagram 1 of an installation structure of an electric vehicle endurance device provided by an embodiment of the present invention; Fig. 2 is a schematic diagram 2 of an installation structure of an electric vehicle endurance device provided by an embodiment of the invention.

First, as shown in Figure 1 and Figure 2, a battery life device for an electric vehicle provided in this embodiment includes a generator 1, a motor 2 and an energy storage assembly 3; The mechanical energy generated by the rotation is converted into electrical energy and stored in the energy storage assembly 3. Then, the electrical energy is used to provide energy for the motor 2, and in turn, the motor 2 is used to drive the active wheels of the electric vehicle to rotate. Therefore, It can greatly improve the battery life of the car.

Wherein, the power generating mechanism 1 includes a wheel linkage 11 and a generator 12 .

Then, the wheel linkage lever 11 is connected with the rotor of the generator 12, and as the vehicle travels, the driven wheels can simultaneously drive the wheel linkage lever 11 to rotate, and then utilize the wheel linkage lever 11 to drive The rotor turns.

The generator 12 is electrically connected to the energy storage assembly 3, and the generator 12 can store the electric energy generated by the rotation of the wheel linkage lever 11 to drive the generator 12 in the energy storage assembly 3 for backup. The energy storage assembly 3 is electrically connected to the motor 2; the motor 2 is connected to the drive shaft of the driving wheel of the vehicle, and when the battery used by the electric vehicle is out of power, the motor 2 can be used to drive the drive shaft to rotate , and then make the active wheels of the electric vehicle rotate.

Wherein, it should be noted that, in one embodiment, the driven wheels, as shown in Figure 1, are the front wheels of the electric vehicle, and the driven wheels are the rear wheels of the electric vehicle. The car belongs to the front drive, and the rear wheels (driven wheels) are driven by the front wheels (driving wheels) to generate friction with the ground and rotate.

Of course, the driving modes of the front-wheel drive and the rear-drive can also be relatively switched, using the rear-drive vehicle to drive forward, and using the front wheels to charge.

As shown in Figures 1 and 2, the operation process of the overall structure is described below:

When the electric vehicle is running, the rotation of the driven wheels will cause the wheel linkage lever 11 to rotate together, so as the electric vehicle moves, the wheel linkage lever 11 will transmit the rotating power to the generator 12 The rotor drives the rotor to rotate.

The electric energy generated when the wheel linkage lever 11 rotates is stored in the energy storage assembly 3, and the electric motor 2 can use the electric energy stored in the energy storage assembly 3 to continue to drive and rotate the active wheels of the electric vehicle when needed , so that the electric vehicle can continue to sail. This structure greatly increases the endurance of the electric vehicle. The mechanical energy of the rotation of the vehicle wheel is first converted into electrical energy, and then converted into mechanical energy again to drive the rotation of the vehicle wheel, which eases the charging of the electric vehicle. Pressure, saving the government a lot of manpower and material resources.

Wherein, using the gearbox 43, when the electric vehicle is running, along with the movement of the electric vehicle, the driven wheels will rub against the ground and rotate, and the power of this rotation will be transmitted to the motor on the rotor of the generator 12. The gearbox 43, the gearbox 43 drives the rotor to rotate, so that the resistance of the rotor to rotate the generator 12 can be reduced through the gearbox 43, and the generator 12 is used to generate electricity.

In addition, the battery life device of the electric vehicle also includes a controller; the controller is connected with the gearbox 43 and the drive shaft 42 for controlling the connection between the gearbox 43 and the drive shaft 42 and separate.

Through the controller, when the controller controls the connection between the gearbox 43 and the drive shaft 42, the rotational mechanical energy of the driven wheels can be transmitted through the drive shaft 42, and the generator 12 is used to generate electricity; When the controller controls the separation of the gearbox 43 and the drive shaft 42, it can stop charging the generator 12.

In this way, it is possible to artificially control whether to use the mechanical energy of the driven wheels to charge the energy storage assembly 3 .

Further, in the embodiment of the present invention, the energy storage assembly 3 includes a first storage battery 31 and a second storage battery 32; using two storage batteries, that is, the first storage battery 31 and the second storage battery 32 are connected with the The generating mechanism 1 is electrically connected to store the electric energy generated by the generating mechanism 1 .

When the electric vehicle uses the first storage battery 31, the first storage battery 31 has no electricity, and the electric vehicle will automatically enable the second storage battery 32 to drive the electric vehicle, so that the driven wheel can be used to drive the wheel linkage during the running of the electric vehicle. Further, the generator 12 is driven to supplement the electricity of the second storage battery 32 , so that the electric vehicle can recycle the energy storage battery during driving, so as to achieve continuous battery life.

Wherein, it also includes an alternate charge controller 33; the alternate charge controller 33 is connected between the energy storage assembly 3 and the power generating mechanism 1, that is, the alternate charge controller 33 is connected with the first storage battery at the same time. 31 is connected to the second storage battery 32 , and the other end of the alternate charge controller 33 is connected to the generator 1 .

The alternating charging controller 33 can control whether the electric energy generated by the power generating mechanism 1 is stored in the first storage battery 31 or in the second storage battery 32, so as to adjust or balance the electric energy generated by the first storage battery 31 and the second storage battery 32. Second, the charging of the storage battery 32 .

Specifically, the electric energy generated when the generator 12 rotates can be stored in the energy storage assembly 3 (including the first storage battery 31 and the second storage battery 32 ), and the electric motor 2 can use the stored energy when the electric vehicle needs electric energy while driving. The first storage battery 31 of the component 3 takes power to drive the vehicle. When the electric vehicle is running with the electric energy of the first storage battery 31, the power storage function can be turned on to store electricity for the second storage battery 32. The first storage battery 31 and the second storage battery 32 can Alternate charging, however, the stored electric energy can continue to drive and rotate the drive shaft of the electric vehicle, thereby enabling the electric vehicle to continue sailing.

Further, in the embodiment of the present invention, the electric vehicle endurance device further includes a transmission mechanism 4 ; the transmission mechanism 4 can be used to transmit the power between the wheel linkage lever 11 and the generator 12 .

Wherein, the transmission mechanism 4 includes a linkage lever diverter 41, a drive shaft 42 and a gearbox 43; as shown in Figure 1, the linkage lever diverter 41 is connected with the wheel linkage lever 11, and the gearbox 43 is connected to the generator 12 : wherein, the linkage rod diverter 41 is connected to the gearbox 43 through the driving shaft 42 .

With the above structure, when the power is transmitted between the wheel linkage lever 11 and the generator 12 through the transmission mechanism 4, the wheel linkage lever 11 and the generator can be adjusted mainly through the transmission mechanism 4. 12, for example, in the specific structure shown in Figure 1, after the drive shaft 42 is driven and connected to the wheel linkage lever 11 through the linkage lever redirector 41, the drive shaft 42 can make the drive The rotating shaft 42 is in a vertical state with the wheel linkage lever 11, so that the gearbox 43 and the generator 12 connected to it can be arranged in the middle part of the car body 8, without the need to connect with the wheel linkage lever. 11 near the connection.

Of course, not only the structure shown in Figure 1 is used in the specific assembly, but if the transmission mechanism 4 is used for power transmission, the position and connection between the mechanisms can be made more reasonable, and then reasonably distributed in the car. on the chassis.

FIG. 3 is a schematic diagram of the power connection structure of the power detection mechanism 5 provided by an embodiment of the present invention.

Further, as shown in FIG. 3 , the electric vehicle battery life device also includes a power detection mechanism 5; the power detection mechanism 5 can detect the remaining power of the energy storage component 3 in real time, and automatically enable the supplementary power while monitoring the power of the user. remind.

Wherein, the power detection mechanism 5 includes a power detection module 51, a processor 52 and a display; as shown in FIG. The remaining power in the component 3 is detected, and at the same time, the processor 52 and the display 53 are electrically connected to the power detection module 51, so that the processor 52 processes the detection result of the power detection module 51, and then The data is processed into a displayable data form and displayed on the display 53 .

Wherein, the display 53 may include multiple displays, which are respectively placed inside and outside the vehicle, for the driver and drivers of other vehicles to refer to the remaining power, so as to achieve the function of reminding.

FIG. 4 is a schematic diagram of the power connection structure of the charging mechanism 6 provided by an embodiment of the present invention.

Further, as shown in FIG. 4 , the electric vehicle endurance device also includes a charging mechanism 6; wherein, the charging mechanism 6 includes at least one charging module 61 and a charging interface 62, and one end of the charging module 61 is connected to the energy storage The component 3 is connected, and the other end of the charging module 61 is connected to the charging interface 62; the charging interface 62 is used for external charging power supply.

Based on the above structure, the driver can also charge the energy storage component 3 through the charging mechanism 6 to supplement electric energy and prevent the power generation capacity of the power generating mechanism 1 from being insufficient.

FIG. 5 is a schematic diagram of the power connection structure of the solar charging mechanism 7 provided by an embodiment of the present invention.

Further, as shown in FIG. 5 , the electric vehicle endurance device further includes a solar charging mechanism 7; the solar charging mechanism 7 can also charge the energy storage component 3 with solar energy.

Wherein, the solar charging mechanism 7 includes at least one solar charging board 71, the solar charging board 71 is electrically connected with the energy storage component 3, and the solar charging board 71 faces the sun to absorb the energy of the sun, and then convert it into The electric energy charges the energy storage component 3 to supplement the electric energy and prevent the power generation capacity of the power generating mechanism 1 from being insufficient.

Further, in an embodiment of the present invention, the solar charging mechanism 7 also includes a hinged bracket; the solar charging board 71 is fixed on the hinged bracket, and is used to be connected to the front cover of the car through the hinged bracket. Above, the hinged bracket can adjust the angle of the solar charging board 71 to obtain a larger solar irradiation area.

Further, in an embodiment of the present invention, the battery life device of the electric vehicle further includes an electric energy display component;

The electric energy display component is electrically connected with the energy storage component 3 for displaying the remaining power of the energy storage component 3 .

The present application also provides an electric vehicle, including a vehicle body 8 and the battery life device of the electric vehicle.

Since the specific structure, functional principles and technical effects of the battery life device for electric vehicles have been described in detail above, they will not be repeated here.

For any technical content related to the electric vehicle battery life device, you can refer to the previous records.

In the above technical solution, after the electric vehicle adopts the electric vehicle endurance device, it can use the mechanical energy generated by the rotation of the wheels during the driving of the electric vehicle to convert it into electrical energy and store it, and then continue to use the stored energy in turn. Electric energy is used to drive electric vehicles forward, thus improving the battery life of electric vehicles.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (10)

1. An electric vehicle endurance device, characterized in that it comprises a power generating mechanism (1), an electric motor (2) and an energy storage assembly (3); The power generation mechanism (1) includes a wheel linkage lever (11) and a generator (12), and the wheel linkage lever (11) is used to connect with driven wheels; wherein, the wheel linkage lever (11) is connected to the The rotor connection of the generator (12) is used to drive the rotor to rotate; The generator (12) is electrically connected to the energy storage assembly (3), and the energy storage assembly (3) is electrically connected to the electric motor (2); The electric motor (2) is used to drive the drive shaft of the driving wheel to rotate. 2. The electric vehicle endurance device according to claim 1, characterized in that, the energy storage component (3) comprises a first battery (31) and a second battery (32); Both the first storage battery (31) and the second storage battery (32) are electrically connected to the generating mechanism (1), and are used for storing electric energy generated by the generating mechanism (1). 3. The battery life device for electric vehicles according to claim 2, further comprising a charging controller (33) in turn; The alternate charging controller (33) is connected between the energy storage assembly (3) and the power generating mechanism (1). 4. The battery life device for electric vehicles according to claim 1, further comprising a transmission mechanism (4); The transmission mechanism (4) includes a linkage rod diverter (41), a drive shaft (42) and a gearbox (43); The linkage lever diverter (41) is connected to the wheel linkage lever (11), and the gearbox (43) is connected to the generator (12): wherein, the linkage lever diverter (41) It is drivingly connected with the gearbox (43) through the drive shaft (42). 5. The battery life device for electric vehicles according to claim 1, further comprising a power detection mechanism (5); The power detection mechanism (5) includes a power detection module (51), a processor (52) and a display (53); The power detection module (51) is electrically connected to the energy storage component (3), and at the same time, both the processor (52) and the display (53) are electrically connected to the power detection module (51). 6. The battery life device for electric vehicles according to claim 1, further comprising a charging mechanism (6); The charging mechanism (6) includes at least one charging module (61) and a charging interface (62), one end of the charging module (61) is connected to the energy storage component (3), and the other end of the charging module (61) One end is connected with the charging interface (62); The charging interface (62) is used for external charging power supply. 7. The battery life device for electric vehicles according to claim 1, further comprising a solar charging mechanism (7); The solar charging mechanism (7) includes at least one solar charging board (71), and the solar charging board (71) is electrically connected to the energy storage component (3). 8. The electric vehicle battery life device according to claim 7, characterized in that, the solar charging mechanism (7) also includes a hinged bracket; The solar charging board (71) is fixed on the hinged bracket for being connected to the front cover of the car through the hinged bracket. 9. The battery life device for electric vehicles according to claim 4, further comprising a controller; The controller is connected with the gearbox (43) and the driving shaft (42), and is used for controlling the connection and separation between the gearbox (43) and the driving shaft (42). 10. An electric vehicle, characterized in that it comprises a vehicle body (8) and the electric vehicle endurance device according to any one of claims 1-9.