CN108116242A - Ship vehicle, electric vehicle and electric vehicle charging method - Google Patents

Abstract

The application discloses a ferry vehicle, an electric vehicle, charging the electric vehicle and a method for charging the electric vehicle. The ferry vehicle includes an information acquisition unit configured to acquire the location of the ferry vehicle; an information sharing unit configured to share the location of the ferry vehicle with the electric vehicle, and guide the electric vehicle to approach the ferry vehicle; and a car charger, Configured to charge at least one electric vehicle entering the compartment of the ferry vehicle. By installing a car charger inside the ferry vehicle, it overcomes the low instantaneous power brought by the wireless charging lane, as well as the electromagnetic wave attenuation and interference of wireless electromagnetic wave charging, so as to realize fast charging. At the same time, since the charging process can be carried out inside the running ferry, charging is safer and more convenient.

Description

Ferry vehicle, electric vehicle and electric vehicle charging method

technical field

The present disclosure generally relates to the field of automobiles, specifically to the field of electric vehicle charging, and in particular to a ferry vehicle for charging electric vehicles and an electric vehicle capable of charging from the ferry vehicle. The present disclosure also relates to a method for charging an electric vehicle.

Background technique

Due to the characteristics of low energy consumption and environmental protection, electric vehicles have become more and more popular in recent years. Especially with the advancement of electric vehicles in terms of drive, their power performance is currently no less than that of oil-driven vehicles. However, the battery capacity problem of electric vehicles has also become the main reason restricting its development. During long-distance driving, especially on highways, electric vehicles usually encounter the situation of stopping and charging halfway because of insufficient power and difficulty in completing the desired route.

An existing method for charging an electric vehicle adopts a direct connection between a car charger and a battery of the electric vehicle, thereby charging the electric vehicle through a wired connection. This charging method can realize fast charging of electric vehicles to saturation. However, this charging method is generally suitable for parking and charging on emergency lanes, fixed parking lots or charging stations, and cannot achieve the effect of charging electric vehicles on the move.

Another way is to use wireless charging lane technology. By installing a wireless charging device on a fixed lane on the road surface, electromagnetic waves are emitted to charge the electric vehicle when the electric vehicle is driving on this lane. Although this charging method enables electric vehicles to be charged on the move, this charging method is greatly dependent on the infrastructure built. Especially at this stage, many charging infrastructures are not yet perfect. And due to the high cost, many road sections cannot be covered at present. Another disadvantage of wireless charging lanes is that compared with the direct plug-in method of obtaining power from the power supply, its instantaneous charging power is small. This means that the charging time required to charge to a certain amount of power may be very long. When the battery of the electric vehicle is very low, the instantaneous power obtained through the wireless charging lane may not be enough to drive the car to continue driving on the wireless charging lane. Another problem that is difficult to solve in the wireless charging lane is: because it uses electromagnetic wave charging, the electromagnetic wave tends to attenuate (especially when the distance between the electric vehicle and the charging equipment is far away) or interfere during the transmission process, so that the receiving end of the electric vehicle can obtain The electromagnetic signal is further reduced.

Therefore, it is desirable to have a system and method for safely and conveniently fast charging electric vehicles on the move.

Contents of the invention

In order to overcome one or more deficiencies in the prior art, according to a first aspect of the present disclosure, a ferry vehicle is provided. It includes an information acquiring unit configured to acquire the location of the ferry vehicle; an information sharing unit configured to share the location of the ferry vehicle with the electric vehicle, and guide the electric vehicle to approach the ferry vehicle; and a car charger configured to Charge at least one electric vehicle that enters the cabin of the ferry.

Optionally, the information obtaining unit is further configured to obtain the location of at least one electric vehicle requesting charging. And the navigation path of the ferry vehicle is determined by the position of at least one electric vehicle.

Optionally, the information obtaining unit is further configured to obtain a navigation route of at least one electric vehicle. And the navigation route of the ferry vehicle is determined by the navigation route of at least one electric vehicle requesting charging.

Optionally, the information sharing unit is further configured to share the navigation route of the ferry vehicle with at least one electric vehicle requesting charging. And the electric vehicle approaches the ferry vehicle based on the location of the ferry vehicle and the navigation path of the ferry vehicle.

Optionally, the information sharing unit shares the position of the ferry vehicle with the electric vehicle directly or through a third party.

Preferably, the third party includes an online service or a mobile terminal.

Preferably, after the electric vehicle approaches the ferry vehicle, the ferry vehicle opens the compartment door to receive at least one electric vehicle to be charged into the compartment of the ferry vehicle.

Preferably, after the charging of the electric vehicles is completed, the ferry vehicle opens the compartment door to drive at least one electric vehicle away from the ferry vehicle.

According to a second aspect of the present disclosure, an electric vehicle is also provided. It includes: a navigation unit configured to obtain the position of the ferry car described in the first aspect of the present disclosure, so as to guide the electric vehicle to approach the ferry car so as to enter the compartment; Charge on the car charger inside the compartment.

Preferably, the navigation path of the electric vehicle is determined by the location of the ferry vehicle.

Preferably, the electric vehicle further includes a sharing unit configured to share the location of the electric vehicle with the ferry vehicle.

Optionally, the sharing unit is further configured to share the navigation route of the electric vehicle with the ferry vehicle.

Optionally, the navigation unit is further configured to acquire the navigation route of the ferry. And the navigation path of the electric vehicle is determined by the navigation path of the ferry vehicle.

Optionally, the electric vehicle further includes an active control unit configured to guide the electric vehicle into the compartment of the ferry vehicle automatically or semi-automatically.

Optionally, the active control unit may include: a detection module, used to detect the status and environmental conditions of the electric vehicle and the ferry vehicle; a decision module, which determines the reaction mode of the electric vehicle according to the detection result; and an operation module, according to the decision module The determined response mode controls the operation of the electric vehicle.

According to a third aspect of the present disclosure, there is provided a method for charging an electric vehicle, which includes the following steps: acquiring the location of the ferry vehicle; sharing the location of the ferry vehicle with the electric vehicle requesting charging, and guiding the electric vehicle to approach the ferry the ferry; and charging at least one electric vehicle that enters the compartment of the ferry.

According to a fourth aspect of the present disclosure, there is also provided a method for charging an electric vehicle, including the steps of: obtaining the position of the ferry vehicle to guide the electric vehicle close to the ferry vehicle so as to enter the compartment of the ferry vehicle; Charge on the car charger in the cabin of the ferry.

Optionally, the method provided by the fourth aspect of the present disclosure further includes guiding the electric vehicle to automatically or semi-automatically enter the compartment of the ferry vehicle.

Therefore, according to the implementation of the present disclosure, the method of installing the car charger on the ferry vehicle to charge the electric car overcomes the low instantaneous power brought by the wireless charging lane, the inability to quickly charge to saturation, and the electromagnetic wave attenuation of wireless electromagnetic wave charging , interference and other issues, so as to achieve fast charging. At the same time, because the car charger is arranged in the ferry car, and the charging process is carried out in the accommodation space inside the ferry car, that is, the electric car does not need to park on the emergency lane, fixed parking lot or charging station for charging, thus Make charging safer and more convenient.

Description of drawings

1A-1B are diagrams of application scenarios according to an embodiment of the present disclosure;

Fig. 2 shows a schematic block diagram of a ferry vehicle in an embodiment of the present disclosure;

Fig. 3 shows a schematic block diagram of an electric vehicle in an embodiment of the present disclosure;

Fig. 4A-Fig. 4C show several modes of docking between the electric vehicle and the ferry vehicle in the embodiment of the present disclosure;

FIG. 5 shows a method for charging an electric vehicle according to an embodiment of the present disclosure; and

Fig. 6 shows a method for charging an electric vehicle according to another embodiment of the present disclosure.

Detailed ways

The present application will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain related inventions, not to limit the invention. It should also be noted that, for ease of description, only parts related to the invention are shown in the drawings.

It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

FIG. 1A and FIG. 1B show application scenarios where embodiments of the present disclosure can be applied. As shown in FIG. 1A , the application scenario includes a ferry vehicle 101 and an electric vehicle 102 . The term "ferry" in this disclosure refers to the ability to accommodate, carry other vehicles. The electric vehicle 102 may include a pure electric vehicle, or a gasoline-electric hybrid vehicle. In FIG. 1A , the electric vehicle 102 and the ferry vehicle 101 establish a communication connection with each other directly. For example, through the Car-2-Car method, the communication devices installed inside the vehicle, such as antennas and signal transceivers, directly share their location information with the other party. Of course, after the communication connection is established, other signals such as navigation paths and vehicle operation information can also be shared in this way. After obtaining the location of the ferry car 101 , the electric car 102 to be charged meets the ferry car 101 and enters the interior of the ferry car 101 to charge from the car charger installed in the ferry car 101 . The specific implementation method for the intersection of the electric vehicle 102 and the ferry vehicle 101 will be introduced in detail below.

As shown in FIG. 1B , different from the application scenario in FIG. 1A , the electric vehicle 102 and the ferry vehicle 101 establish a communication connection with each other through a third party. The above-mentioned "third party" refers to other communication methods or devices that are independent of the devices of the electric vehicle 102 or the ferry 101 . In one implementation, the aforementioned third party is an online service. The online service is implemented to provide an interactive platform for the electric vehicle 102 and the ferry vehicle 101 . The electric vehicle 102 or the ferry vehicle 101 establishes a communication connection between the two parties by accessing the online service. For example, the electric vehicle 102 can access online services to obtain the location of the ferry vehicle 101, a navigation route or other similar information. The ferry vehicle 101 can also acquire the information of the electric vehicle 102 in the same way. The above-mentioned access can be realized by accessing the web page link of the online service or through the above-mentioned online service application of the mobile terminal.

In another implementation, the above-mentioned third party is a user terminal. Such as smart phones, wearable devices and other terminal devices with communication functions. For example, the driver or passenger in the electric vehicle 102 establishes a communication connection with the driver or passenger of the ferry car 101 through his own smart phone, and shares the location, navigation and other information of both parties in real time through the smart phone. Or establish a communication connection with the driver of the opposite party or the smart terminal of the passenger through the internal communication device of the electric vehicle or ferry vehicle 101 .

Of course, the numbers of ferry vehicles 101 and electric vehicles 102 drawn in the above application scenarios are only used for explaining the present disclosure, and it should be understood that any other number of ferry vehicles 101 or electric vehicles 102 should also be covered within the protection scope of the present disclosure. . And the above application scenario is described as a scenario in a certain block as the application background, it should be understood that the present disclosure should also include applications in expressways, national highways or any other traffic scenarios.

By using the car charger installed on the ferry car 101 to charge the electric car 102, it overcomes the problems of low instantaneous power brought by the wireless charging lane, inability to quickly charge to saturation, and electromagnetic wave attenuation and interference of wireless electromagnetic wave charging. Achieve fast charging. At the same time, since the above-mentioned car charger is arranged in the ferry car 101, and the charging process is carried out in the accommodating space (such as the compartment) inside the ferry car 101, that is, the electric car 102 does not need to be on the emergency driveway, fixed parking lot Or stop at a charging station for charging, making charging safer.

Referring to FIG. 2 , FIG. 2 shows a schematic block diagram of a ferry vehicle 101 of the present disclosure. The ferry vehicle 101 includes an information acquisition unit 21 , an information sharing unit 22 and a car charger 23 . The information obtaining unit 21 is configured to obtain the location of the ferry vehicle 101 . The information sharing unit 22 is configured to share the location of the ferry vehicle 101 with the electric vehicle 102 and guide the electric vehicle 102 to approach the ferry vehicle 101 . The car charger 23 is configured to charge the electric vehicle 102 that is driven into the ferry vehicle 101 based on the location shared by the ferry vehicle 101 and charged in the cabin of the ferry vehicle 101 .

The information acquiring unit 21 obtains the position of the ferry vehicle 101 itself through the positioning device inside the ferry vehicle 101 . Such as the antenna assembly inside the ferry vehicle 101, the GPS positioning system or other existing vehicle positioning devices. Of course, in another embodiment, the information acquiring unit 21 also acquires the position, navigation route or other information of the electric vehicle 102 by establishing a communication connection with the electric vehicle 102 .

The information sharing unit 22 may be implemented as any device that implements wireless communication directly or through a third-party device described in the application scenarios of the present disclosure. For example, it can be an online service, a mobile terminal, and so on. The information sharing unit 22 can also share information such as its own location and navigation route with the electric vehicle 102 .

The car charger 23 is a battery device or battery pack installed inside the ferry vehicle 101 . It is connected with the electric vehicle 102 driving into the ferry vehicle 101 through, for example, a cable, so as to charge the electric vehicle 102 . As for the setting of the number of car chargers 23 , the setting of their installation structure, and the interface manner provided for charging the electric car, the present disclosure does not make a limitation here.

Referring to FIG. 3 , FIG. 3 shows a schematic block diagram of an electric vehicle 102 of the present disclosure. The electric vehicle 102 includes a navigation unit 31 and a charging unit 32 . The navigation unit 31 is configured to obtain the location of the ferry vehicle 101 to guide the electric vehicle 102 to approach the ferry vehicle 101 so as to enter the compartment of the ferry vehicle 101 . The charging unit 32 is configured to charge from a car charger installed inside the compartment of the ferry vehicle.

The navigation unit 31 is a communication device inside the electric vehicle, which obtains various information such as the location and navigation route of the ferry vehicle 101 through the methods described in the application scenarios of the present disclosure, and details will not be repeated here.

The charging unit 32 is an auxiliary device that can be charged from a car charger inside the cabin of the ferry vehicle 101 . It may include a docking assembly for docking with a car charger.

In another embodiment of the present disclosure, the electric vehicle 102 further includes a sharing unit 33 , which is further configured to share the location of the electric vehicle 102 or the location and navigation route information with the ferry vehicle 101 .

Several ways of docking the electric vehicle 102 with the ferry vehicle 101 will be described in detail below, see FIGS. 4A-4C .

In a certain implementation, as shown in FIG. 4A , when the electric vehicle 102 is driving on a certain traffic section, it is in a low battery state and needs to be charged. Send a charging request to the ferry vehicle 101 in the manner described in the application scenario. The ferry vehicle 101 is in a standby state after receiving the charging request from the electric vehicle 102 . The electric car 102 acquires the location information of the ferry car 101 and drives to the standby location of the ferry car 101 . After the electric vehicle 102 arrives at the standby position of the ferry vehicle 101, the electric vehicle 102 drives into the compartment of the ferry vehicle 101 to charge. Because in this method, the ferry vehicle 101 is in a stand-by state when receiving the request sent by the electric vehicle 102, the electric vehicle 102 will not move in the opposite direction when it drives to the position of the ferry vehicle 101 or because the ferry vehicle 102 101 is inconsistent with the navigation path of the electric vehicle 102, resulting in the situation that the docking cannot be realized. In an embodiment, the ferry vehicle 101 may also be in a driving state when receiving a charging request from the electric vehicle 102 . The ferry vehicle can share its own location and driving route (or navigation route) with the electric vehicle requesting charging, and the electric vehicle plans its own driving route according to the current location and driving route of the ferry vehicle so as to approach the ferry vehicle more advantageously .

In another implementation, referring to FIG. 4B, this implementation is different from the implementation described in FIG. 4A in that: when the ferry vehicle 101 receives a charging request from the electric vehicle 102, it obtains the real-time location of the electric vehicle 102, and passes the information The sharing unit 22 shares its own location information with the electric vehicle 102 . Both the ferry vehicle 101 and the electric vehicle 102 travel to a certain meeting point for docking. The meeting point may be a certain location between the ferry vehicle 101 and the electric vehicle 102 . Adopting this method can greatly reduce the time for the electric vehicle 102 to drive to the ferry vehicle 101, especially for the electric vehicle 102 whose power is not enough to travel to the ferry vehicle 101. In one embodiment, when the ferry vehicle 101 receives the charging request from the electric vehicle 102, it can also obtain the driving route of the electric vehicle 102, and share its own driving route with the electric vehicle 102 through the information sharing unit 22, make them more advantageously close to each other.

In another implementation, referring to FIG. 4C , when the battery of the electric vehicle 102 is too low to run to the back of the ferry vehicle 101 to realize docking. After the ferry vehicle 101 receives the charging request from the electric vehicle 102 , it obtains the location of the electric vehicle 102 . And travel to the position of the electric vehicle 102 to realize docking with the electric vehicle 102 . The ferry vehicle 101 can also obtain the driving route of the electric vehicle 102 at the same time so as to approach more advantageously. Adopting this method can make electric vehicles with very low power also realize charging.

Of course, the above only describes the situation where a single electric vehicle 102 sends a charging request. When multiple electric vehicles 102 send charging requests, the ferry vehicle 101 plans a running path to dock with the electric vehicles 102 to be charged according to the received multiple charging requests and the received location information of the electric vehicles 102 to be charged. The ferry vehicle 101 plans its driving route according to the locations of the multiple electric vehicles 102 after receiving the charging requests of the multiple electric vehicles 102 . Of course, the above disclosure is not limited to multiple electric vehicles 102 issuing charging requests simultaneously, and it also includes the situation that multiple electric vehicles 102 issue charging requests one after another. The accommodating space of the ferry vehicle 101 is not limited to the space of one vehicle, and it should also include the situation that multiple electric vehicles can be charged on it at the same time.

In a certain embodiment, when the ferry vehicle 101 has been docked with an electric vehicle 102, there is still room for other electric vehicles to charge and when multiple charging requests are received, the ferry vehicle 101 plans to Its running path is to realize docking with the above-mentioned electric vehicle 102 to be charged. Its running path is determined by the locations of multiple electric vehicles 102 to be charged.

Also in a certain embodiment, when the ferry vehicle 101 has been docked with the electric vehicle 102 and there is no other charging request or no other charging space, the ferry vehicle 101 also obtains one or more electric vehicles charged in it. The navigation path of an electric vehicle. For example, if an electric vehicle A charged on the ferry vehicle 101 expects to drive to a destination B, after docking with the electric vehicle A, the ferry vehicle 101 can plan its own navigation during the charging process of the electric vehicle A in it The route travels to destination B. In this way, after the charging is completed, the electric vehicle A will not need to complete redundant or undesired routes to travel to its desired route because the travel route of the ferry vehicle 101 is inconsistent or even reversed during the charging process. destination. Of course, the above only describes the case where the ferry vehicle 101 is based on a single electric vehicle 102 charged in the compartment. When multiple electric vehicles are charging in the compartment at the same time, the navigation route of the ferry vehicle 101 can optionally be determined according to the navigation routes of the multiple electric vehicles. For example, a path shared by multiple electric vehicles charged on it, or a certain road section or a certain fixed location that is close to the expected destinations of multiple electric vehicles on it can be selected as the basis for its navigation route. It should be known that the way of determining the navigation route of the ferry vehicle 101 is not limited to this.

Of course, information sharing between the ferry vehicle 101 and the electric vehicle 102 and subsequent charging and docking can be realized in an automatic or semi-automatic driving manner, such as through an active control unit. Specifically, the electric car 102 can automatically obtain the location information of the ferry car 101, and then in the automatic or semi-automatic operation mode, the ferry car 101 opens its compartment door for the electric car 102 to enter its interior compartment. The electric vehicle 102 drives to the interior of the ferry vehicle 101 with the assistance of the active control unit and charges in the compartment of the ferry vehicle 101 . The operation process of the active control unit can be divided into three modules: detection, decision-making and operation. In the detection module, sensors (such as cameras, lasers, radars, etc.) can detect the motion state of the ferry vehicle 101, its own motion state, the road environment (such as lane lines, road types, traffic signs) and other vehicles and objects around it. . In the decision-making module, the reaction mode of the self-vehicle can be determined by judging the detection result of the detection module, so as to achieve the purpose of driving to the inside of the ferry vehicle 101, such as keeping the position of the self-vehicle within the ferry vehicle 101 in the lateral direction. Within the width range of the vehicle, in the longitudinal direction, the speed of the self-vehicle is kept balanced within a certain range greater than the speed of the ferry vehicle 101. In the operation module, the electric vehicle 102 can automatically drive the electric vehicle 102 into the ferry vehicle 101 by controlling its own acceleration, deceleration, steering and other operations according to the decisions made by the decision-making module. Optionally, the process of driving to the interior of the ferry vehicle 101 can be semi-automatic driving, that is, the acceleration, deceleration, and turn signal operations in the operating module can be at least one of which is controlled by the driver of the electric vehicle 102 through the accelerator, Brake and steering wheel controls. After the charging is completed, the ferry vehicle 101 opens its compartment door, and the electric vehicle 102 drives out from the interior of the ferry vehicle 101 by automatic or semi-automatic driving and returns to the ground.

Referring to FIG. 5 , it shows a method for charging an electric vehicle according to an embodiment of the present disclosure. The method described in FIG. 5 may be implemented in the ferry vehicle 101 in FIG. 2 .

As shown in Fig. 5, in step 51, the location of the ferry vehicle is obtained.

The ferry vehicle 101 can obtain its own position through a positioning device inside the ferry vehicle 101 . Such as GPS or existing vehicle positioning system.

In step 52, the location of the ferry is shared with the electric vehicle requesting charging, and the electric vehicle is guided to approach the ferry.

The ferry vehicle 101 shares its own position with the electric vehicle 102, and it can share its own position with the electric vehicle through direct or third-party methods as described in the application scenario. I won't repeat them here.

Next, in step 53, at least one electric vehicle entering the compartment of the ferry vehicle is charged.

As mentioned above, after obtaining each other's position information, the electric vehicle and the ferry can use any of the methods described in Fig. 4A-Fig. 4C to achieve mutual docking. The ferry vehicle 101 installed with the car charger is thus provided for charging the electric vehicle 102 in its own accommodation space such as the compartment.

Referring to FIG. 6 , it shows a charging method according to an embodiment of the present disclosure. The method described in FIG. 6 can be implemented in the electric vehicle 102 in FIG. 3 .

As shown in FIG. 6 , in S61 , the position of the ferry vehicle is obtained, so as to guide the electric vehicle to approach the ferry vehicle so as to enter the compartment of the ferry vehicle. The obtained position of the ferry vehicle is consistent with the position obtained by the navigation unit 31 of the ferry vehicle 101 in FIG. 3 .

Next, in S62, the battery is charged from the car charger installed in the compartment of the ferry car. The manner in which the electric vehicle 102 docks with the ferry vehicle 101 and drives into it is as described in FIGS. 4A-4C . I won't repeat them here.

In another embodiment, the charging method further includes step S63, guiding the electric vehicle into the compartment of the ferry vehicle automatically or semi-automatically. Step S63 may optionally be performed after step S61.

Guiding the electric vehicle to automatically or semi-automatically enter the compartment of the ferry vehicle can be assisted by an active control unit. The specific implementation method has been described above and will not be repeated here.

The above description is only a preferred embodiment of the present application and an illustration of the applied technical principle. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to the technical solution formed by the specific combination of the above-mentioned technical features, but should also cover the technical solution formed by the above-mentioned technical features without departing from the inventive concept. Other technical solutions formed by any combination of or equivalent features thereof. A technical solution formed by replacing the above-mentioned features with technical features disclosed in this application (but not limited to) with similar functions.

Claims (18)

1. A ferry car is provided with a compartment for accommodating an electric vehicle, characterized in that the ferry car comprises: an information acquisition unit configured to acquire the location of the ferry vehicle; an information sharing unit configured to share the location of the ferry vehicle with the electric vehicle, guide the electric vehicle to approach the ferry vehicle; and a car charger configured to provide At least one electric vehicle in the compartment is charged. 2. The ferry vehicle according to claim 1, wherein the information acquisition unit is further configured to acquire the location of the at least one electric vehicle requesting charging; and the navigation route of the ferry vehicle is determined by The location of the at least one electric vehicle is determined. 3. The ferry vehicle according to claims 1-2, wherein the information acquisition unit is further configured to acquire the navigation route of the at least one electric vehicle; and the navigation route of the ferry vehicle is determined by A navigation route determination of the at least one electric vehicle requesting charging. 4. The ferry vehicle according to any one of claims 1-3, wherein the information sharing unit is further configured to share the navigation route of the ferry vehicle with the at least one vehicle that requests charging an electric vehicle, such that the electric vehicle approaches the ferry vehicle based on the location of the ferry vehicle and the navigation path of the ferry vehicle. 5. The ferry vehicle according to any one of claims 1-4, wherein the information sharing unit shares the location of the ferry vehicle with the electric vehicle directly or through a third party. 6. The ferry vehicle according to claim 5, wherein the third party includes an online service or a mobile terminal. 7. The ferry vehicle according to any one of claims 1-6, characterized in that, after the electric vehicle approaches the ferry vehicle, the ferry vehicle opens the compartment door to receive the battery to be charged. At least one electric vehicle enters the compartment of the ferry vehicle. 8. The ferry vehicle according to any one of claims 1-7, characterized in that, after the charging of the electric vehicle is completed, the ferry vehicle opens the compartment door to drive the at least one electric vehicle away from the vehicle. Said ferry truck. 9. An electric vehicle, characterized in that, comprising: a navigation unit configured to obtain the position of the ferry vehicle according to claims 1-8 to guide the electric vehicle close to the ferry vehicle for entry into the compartment; and The charging unit is configured to charge from a car charger installed inside the compartment of the ferry vehicle. 10. The electric vehicle according to claim 9, wherein the navigation route of the electric vehicle is determined by the location of the ferry vehicle. 11. The electric vehicle according to any one of claims 9-10, wherein the electric vehicle further comprises: A sharing unit configured to share the location of the electric vehicle with the ferry vehicle. 12. The electric vehicle according to claim 11, wherein the sharing unit is further configured to share the navigation route of the electric vehicle with the ferry vehicle. 13. The electric vehicle according to any one of claims 9-12, wherein the navigation unit is further configured to acquire a navigation path of the ferry vehicle; and the navigation path of the electric vehicle is determined by the The navigation path of the ferry is determined. 14. The electric vehicle according to any one of claims 9-13, wherein the electric vehicle further comprises: An active control unit configured to guide the electric vehicle into the compartment of the ferry vehicle automatically or semi-automatically. 15. The electric vehicle according to claim 14, wherein the active control unit comprises: The detection module is used to detect the status and environmental conditions of electric vehicles and ferry vehicles; A decision-making module, which determines how the electric vehicle responds based on the detection results; and The operation module controls the operation of the electric vehicle according to the response mode determined by the decision-making module. 16. A method for charging an electric vehicle, comprising: Obtain the location of the ferry; sharing the location of the ferry vehicle with the electric vehicle requesting charging, guiding the electric vehicle close to the ferry vehicle; and At least one electric vehicle entering the compartment of the ferry is charged. 17. A method for charging an electric vehicle, comprising: obtaining the position of the ferry vehicle to guide the electric vehicle close to the ferry vehicle for entry into the passenger compartment of the ferry vehicle; and Charging is from a car charger mounted in the compartment of the ferry. 18. The method of claim 17, further comprising: The electric vehicle is automatically or semi-automatically guided into the compartment of the ferry vehicle.