阅读说明：本技术 电动汽车的充电方法 (The charging method of electric car ) 是由 刘隆 杨春雷 于 2019-08-28 设计创作，主要内容包括：本发明提供一种电动汽车的充电方法,用于对至少两辆车辆进行充电,所述至少两辆车辆包括第一车辆和第二车辆,包括：交流充电桩提供交流电以对第一车辆进行交流充电；所述第一车辆通过直流充电线连接所述第二车辆,且所述第一车辆通过所述直流充电线提供直流电至所述第二车辆,对所述第二车辆进行直流充电。本发明解决了一个充电桩无法自动对两个车辆进行充电的技术问题。(The present invention provides a kind of charging method of electric car, and for charging at least two vehicles, at least two vehicles include the first vehicle and the second vehicle, comprising: alternating-current charging pile provides alternating current to carry out AC charging to the first vehicle；First vehicle connects second vehicle by DC charging line, and first vehicle provides direct current to second vehicle by the DC charging line, carries out DC charging to second vehicle.The present invention solves a technical issues of charging pile can not automatically charge to two vehicles.)

1. a kind of charging method of electric car, for charging at least two vehicles, at least two vehicles include First vehicle and the second vehicle characterized by comprising

Alternating-current charging pile provides alternating current to carry out AC charging to the first vehicle；

First vehicle connects second vehicle by DC charging line, and first vehicle passes through the DC charging Line provides direct current to second vehicle, carries out DC charging to second vehicle.

2. charging method according to claim 1, which is characterized in that second vehicle carry out DC charging with Before, the charging method further include:

Compare the power battery voltage of first vehicle and the power battery voltage of second vehicle；

When the power battery voltage of first vehicle is not more than the power battery voltage of second vehicle, described the is executed The step of one vehicle provides direct current to second vehicle by the DC charging line.

3. charging method according to claim 1, which is characterized in that the charging method further include:

Compare the charge capacity of second vehicle and the default electricity of second vehicle；

When the charge capacity of second vehicle reaches the default electricity of second vehicle, first vehicle stop to Second Vehicular charging.

4. charging method according to claim 1, which is characterized in that the charging method further include:

Compare the charge capacity of first vehicle with the default electricity of first vehicle and compared with described in the second vehicle Charge capacity and second vehicle default electricity；

In the charge capacity of first vehicle reach the default electricity of first vehicle, and second vehicle has filled When power consumption reaches the default electricity of second vehicle, the first vehicle stopping charges to second vehicle, institute Alternating-current charging pile stopping is stated to charge to first vehicle.

5. charging method according to claim 1, which is characterized in that the charging method further include:

Compare the charge capacity of first vehicle with the default electricity of first vehicle and compared with described in the second vehicle Charge capacity and second vehicle default electricity；

In the charge capacity of first vehicle reach the default electricity of first vehicle, and second vehicle has filled When power consumption is not up to the default electricity of second vehicle, the alternating-current charging pile continues to fill first vehicle Electricity, first vehicle continue to charge to second vehicle.

6. charging method according to claim 1, which is characterized in that first vehicle is mentioned by the DC charging line For direct current to second vehicle, comprising:

Compare the size of current of the alternating current and the size of current of the direct current；

When the electric current of the alternating current is greater than the electric current of the direct current, first vehicle is mentioned by the DC charging line For direct current to second vehicle.

7. charging method according to claim 1, which is characterized in that first vehicle is mentioned by the DC charging line For direct current to second vehicle, comprising:

Compare the size of current of the alternating current Yu the direct current；

When the electric current of the alternating current is less than the electric current of the direct current, control reduces the electric current of the direct current；

When the electric current of the direct current after the decrease is less than the electric current of the alternating current, first vehicle is controlled to described the Two vehicles charge.

8. charging method according to claim 1, which is characterized in that first vehicle is mentioned by the DC charging line For direct current to second vehicle, comprising:

According to the preset intermittent time with controlling first convoy spacing to second Vehicular charging, the intermittent time For preceding primary first vehicle to the second Vehicular charging finish time to rear once first vehicle to described second The first time of Vehicular charging start time.

9. charging method according to claim 8, which is characterized in that described according to control of preset intermittent time described the One convoy spacing to second Vehicular charging, comprising:

Control controls first vehicle with preset duration of charge and fills within the duration to second vehicle Electricity, be then spaced the intermittent time is charged next time again, and the duration is primary first vehicle to described Second Vehicular charging start time is to first vehicle to the second time of the second Vehicular charging finish time.

10. charging method according to claim 1, which is characterized in that the charging method further include:

When the alternating-current charging pile stopping offer alternating current charges to the first vehicle, first vehicle stops providing direct current Electricity carries out DC charging to second vehicle.

Technical field

The present invention relates to charging technique field, in particular to a kind of charging method of electric car.

Background technique

As soon as but more and more there is the case where possessing more than private car in single family at present, then vehicle is parked At a problem.In the residential quarters that certain parking stalls are relatively nervous, the demand temperature of parking stall has been even more than house itself Demand temperature.

For such problems, developer proposes some more effective parking stall prioritization schemes, wherein most commonly seen have Effect is exactly " primary and secondary parking stall ".The family of primary and secondary parking stall has been purchased, can have been stopped simultaneously in the case where not impacted to others Put two cars.

If some family has purchased primary and secondary parking stall, and has purchased two electric cars, and common household AC charges The charging gun limited length of stake, and charging gun can only be fixed on the wall of inside due to cabling etc., be parked in son in this way Two cars on female parking stall, in the same time, the vehicle for being only parked in inside can charge, if the vehicle in outside needs It charges, after inside vehicle can only be waited to charge, and its reversing of position, then charge.Which results in primary and secondary After two cars have been stopped in parking stall, after inside vehicle therein is charged to enough electricity, car owner, which needs to come back to, exchanges two on parking stall The position of vehicle simultaneously charges to the vehicle for being parked in outside originally, and it is enough so just to can guarantee that a vehicle can have at second day Electricity traveling.This adds increased manpower and material resources costs, and reduce the attraction of vehicle and the experience of user.

Summary of the invention

The purpose of the present invention is to provide a kind of charging methods of electric car, can not be automatic right to solve a charging pile The technical issues of two vehicles are charged.

The present invention provides a kind of charging method of electric car, for charging at least two vehicles, it is described at least Two vehicles include the first vehicle and the second vehicle, comprising:

Alternating-current charging pile provides alternating current to carry out AC charging to the first vehicle；

First vehicle connects second vehicle by DC charging line, and first vehicle passes through the direct current Charging cable provides direct current to second vehicle, carries out DC charging to second vehicle.

Wherein, before carrying out DC charging to second vehicle, the charging method further include:

Compare the power battery voltage of first vehicle and the power battery voltage of second vehicle；

When the power battery voltage of first vehicle is not more than the power battery voltage of second vehicle, institute is executed State the step of the first vehicle provides direct current to second vehicle by the DC charging line.

Wherein, the charging method further include:

Compare the charge capacity of second vehicle and the default electricity of second vehicle；

When the charge capacity of second vehicle reaches the default electricity of second vehicle, first vehicle stops Only to second Vehicular charging.

Wherein, the charging method further include:

Compare the charge capacity of first vehicle with the default electricity of first vehicle and compared with described in second The default electricity of the charge capacity of vehicle and second vehicle；

Reach the default electricity of first vehicle in the charge capacity of first vehicle, and second vehicle When charge capacity reaches the default electricity of second vehicle, second vehicle is filled in the first vehicle stopping Electricity, the alternating-current charging pile stopping charge to first vehicle.

Wherein, the charging method further include:

Compare the charge capacity of first vehicle with the default electricity of first vehicle and compared with described in second The default electricity of the charge capacity of vehicle and second vehicle；

Reach the default electricity of first vehicle in the charge capacity of first vehicle, and second vehicle When charge capacity is not up to the default electricity of second vehicle, the alternating-current charging pile continues to carry out first vehicle Charging, first vehicle continue to charge to second vehicle.

Wherein, first vehicle provides direct current to second vehicle by the DC charging line, comprising:

Compare the size of current of the alternating current and the size of current of the direct current；

When the electric current of the alternating current is greater than the electric current of the direct current, first vehicle passes through the DC charging Line provides direct current to second vehicle.

Wherein, first vehicle provides direct current to second vehicle by the DC charging line, comprising:

Compare the size of current of the alternating current Yu the direct current；

When the electric current of the alternating current is less than the electric current of the direct current, control reduces the electric current of the direct current；

When the electric current of the direct current after the decrease is less than the electric current of the alternating current, first vehicle is controlled to institute The second vehicle is stated to charge.

Wherein, first vehicle provides direct current to second vehicle by the DC charging line, comprising:

According to the preset intermittent time with controlling first convoy spacing to second Vehicular charging, the interval Time be preceding primary first vehicle to the second Vehicular charging finish time to rear once first vehicle to described The first time of second Vehicular charging start time.

Wherein, described second vehicle to be filled with controlling first convoy spacing according to the preset intermittent time Electricity, comprising:

Control controls first vehicle within the duration to second vehicle with preset duration of charge Charging, be then spaced the intermittent time is charged next time again, and the duration is primary first vehicle pair The second Vehicular charging start time is to first vehicle to the second time of the second Vehicular charging finish time.

Wherein, the charging method further include:

When the alternating-current charging pile stopping offer alternating current charges to the first vehicle, first vehicle stops providing Direct current carries out DC charging to second vehicle.

In conclusion the application automatically charges at least two vehicles by an alternating-current charging pile, in main-auxiliary vehicle After two cars have been stopped in position, car owner does not need to come back to the position for exchanging two cars on parking stall and to original uncharged vehicle It charges, reduces manpower and material resources cost, and increase the attraction of vehicle and the experience of user.

Detailed description of the invention

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with It obtains other drawings based on these drawings.

Fig. 1 is the flow diagram of the charging method of electric car provided by the invention.

Fig. 2 is the charging flow schematic diagram of the first vehicle and the second vehicle provided in an embodiment of the present invention.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.

Based on the above issues, the present invention provides a kind of charging method of electric car, for carrying out at least two vehicles Charging.At least two vehicles include the first vehicle 10 and the second vehicle 20.

Fig. 1 and Fig. 2 are please referred to, charging method includes:

S1, alternating-current charging pile 30 provide alternating current to carry out AC charging to the first vehicle 10.It, can be by setting in this step It sets AC charging line 40 and connects alternating-current charging pile 30 and the first vehicle 10.The alternating current of alternating-current charging pile 30 passes through AC charging line 40 are provided to the first vehicle 10.

S2, the first vehicle 10 connects the second vehicle 20 by DC charging line 50, and the first vehicle 10 passes through DC charging Line 50 provides direct current to the second vehicle 20, carries out DC charging to the second vehicle 20.In this step, DC charging line 50 is used Twin adapter, one of connector are inserted into the first vehicle 10, in another second vehicle 20 of insertion.

By the human-computer interaction device (such as vehicle-mounted large-size screen monitors or vehicle join cell phone application etc.) of the first vehicle 10 to the first vehicle 10 are configured, and activate the function of its direct-current discharge.Under default conditions, the second vehicle 20 is reactivated after 20 suspend mode of the second vehicle When powering on, the function of the direct-current discharge of the second vehicle 20 should be set as illegal state, that is to say, that when in the second vehicle When 20 direct current charge-discharge mouth accesses direct current rifle, the second vehicle 20 can automatically attempt to the process into DC charging under default conditions In process without jumping direct-current discharge.After the function of the direct-current discharge of setting the first vehicle 10 of activation, the first vehicle 10 battery controller (BMS) can stop sending the bus message under the charged state in the exchange proprietary circuit CAN of charge and discharge, also It is to say, the first vehicle 10 stops paying out the correlation of message and self power battery conventional and that alternating-current charging pile 30 interacts Signal etc., instead, according to the interaction of the logic of the DC charging of national standard, the first vehicle 10 sends conventional direct current The direct-current charging post message part to be sent in charging process.That is, activating the direct-current discharge of the first vehicle 10 After state, in direct current charge-discharge circuit, the first vehicle 10 will just serve as the role of direct-current charging post, with to the second vehicle 20 into Row DC charging.

To which in the application, need to only increase a DC charging line 50 be can be realized through an alternating-current charging pile 30 certainly Dynamic to charge at least two vehicles, after two cars have been stopped in primary and secondary parking stall, car owner does not need to come back to parking stall up-regulation It changes the position of two cars and charges to original uncharged vehicle, reduce manpower and material resources cost, and increase vehicle The experience of attraction and user.

It is both needed to be equipped with battery controller (BMS) and AC/DC changeover switch on traditional the first vehicle 10 and the second vehicle 20 (OBC), the battery controller (BMS) of the first vehicle 10 controls AC/DC changeover switch (OBC) for 10 power battery of the first vehicle Converting direct-current power into alternating-current power, and the alternating current of the first vehicle 10 is provided to the second vehicle 20, the battery control of the second vehicle 20 The alternating current of second vehicle, 20 power battery is converted into direct current by device (BMS) control AC/DC changeover switch (OBC) processed, and will be straight Galvanic electricity is stored in power battery.

In the application, battery controller, the battery of the first vehicle 10 need to be only equipped on the first vehicle 10 and the second vehicle 20 Direct current on first vehicle, 10 power battery is provided to the second vehicle 20 by DC charging line 50 by controller control, and second The direct current received is stored electronically in power battery by the battery controller control of vehicle 20.The application is not necessarily in the first vehicle 10 Interior setting AC/DC changeover switch (OBC), and eliminate conversion of the AC/DC changeover switch (OBC) to direct current to alternating current；This Shen AC/DC changeover switch (OBC) please is set without in the second vehicle 20, also eliminates AC/DC changeover switch (OBC) to alternating current Conversion to direct current.To which the first vehicle 10 and the second vehicle 20 of the application is due to eliminating AC/DC changeover switch (OBC), make structure setting simpler, and due to reducing conversion and alternating current of the direct current to alternating current to direct current Conversion, and make the first vehicle 10 higher to the charge efficiency of the second vehicle 20.The application would be more suitable for not set hand over directly The charging of the two cars of stream transformer (OBC).

In other implementations, at least two vehicles of the invention can also include third vehicle, and third vehicle can be with It is connected on the first vehicle 10 by DC charging line 50, obtaining direct current or third vehicle by the first vehicle 10 can be with It being connected on the second vehicle 20 by DC charging line 50, the first vehicle 10, the second vehicle 20 and third vehicle are sequentially connected in series, Third vehicle obtains direct current from the second vehicle 20.It can also include the 4th vehicle etc., the company of the 4th vehicle etc. in the application Charging modes are connect with above-mentioned similar, details are not described herein.

The charging method of above-mentioned electric car of the invention be not limited to apply the primary and secondary parking stall of front and back design only one The case where alternating-current charging pile 30, the charging method of electric car of the invention can also be applied to the main-auxiliary vehicle of parallel mode design Still only one the available friendship of two parking stalls of the case where having reserved charging pile on only one parking stall of position or other forms The operating condition of current charge stake 30.

In the application, the first vehicle 10 and the second vehicle 20 pass through the CAN bus progress information friendship in direct current charge-discharge line Mutually.Since the second vehicle 20 is in the DC charging mode of default, after 20 vehicle of the second vehicle is powered on wake-up, can be conventional Send national standard the relevant CAN bus message of DC charging, such as with the information exchange message of direct-current charging post and its The state etc. of cells packet, which includes the main battery status signals such as the SOC of power battery pack and voltage.By After the first vehicle 10 enters direct-current discharge mode, the role of direct-current charging post can be served as, so will not send out with the second vehicle 20 The message sent has ID conflict, but carries out the relevant process interaction of effective DC charging.

After the first vehicle 10 receives the battery pack voltage signal of the second vehicle 20 transmission, the first vehicle 10 needs and oneself The battery pack voltage of body is compared.That is, charging method is also before the above-mentioned progress DC charging to the second vehicle 20 Include:

S3 compares the power battery voltage of the first vehicle 10 and the power battery voltage of the second vehicle 20.In this step, the The power battery voltage of one vehicle 10 is actual voltage or modified voltage.The amendment of the power battery voltage of first vehicle 10 Voltage can be with are as follows: virtual voltage-correction value (Δ) of the power battery voltage of the first vehicle 10, which can root It is demarcated according to battery pack performance and parameter, such as 5V.

S4 executes the when the power battery voltage of the first vehicle 10 is not more than the power battery voltage of the second vehicle 20 The step of one vehicle 10 provides direct current to the second vehicle 20 by DC charging line 50.That is, when the second vehicle 20 When power battery voltage is larger, the first vehicle 10 carries out DC charging to the second vehicle 20.

In other implementations, when the power battery voltage of the vehicle for the alternating current for receiving alternating-current charging pile 30 is greater than directly When the power battery voltage of another vehicle of current charge, the vehicle for receiving the alternating current of alternating-current charging pile 30 cannot be to another vehicle Carry out AC charging, at this point, need to be by two vehicle reversing of position, so that the lesser vehicle of power battery voltage is as the first vehicle 10, the alternating current of alternating-current charging pile 30 is received, the biggish vehicle of power battery voltage receives direct current as the second vehicle 20. Specifically, voltage will continue to increase during AC charging if the biggish vehicle of power battery voltage receives alternating current, It will continue to increase with the voltage difference of the lesser vehicle of power battery voltage, if the biggish vehicle of cell voltage is to battery electricity Lesser vehicle is pressed to dock by DC charging line 50, and after entrance direct current charge-discharge process, due to the pressure difference mistake between two vehicles Greatly, the battery pack of the biggish vehicle of cell voltage can discharge a large amount of electric current, while the lesser vehicle of cell voltage in a short time Battery pack can flow into a large amount of electric current in a short time, this can all cause a degree of wound to the battery pack of two vehicles Evil, and this phenomenon can not evade in the case where not changing electrokinetic cell system structure.In such cases, when reception exchanges When the power battery voltage of the vehicle of the alternating current of charging pile 30 is greater than the power battery voltage of another vehicle, wherein one can be passed through Human-computer interaction device on vehicle prompts operator, carries out the text and auditory tone cues of clear and rational, such as " two vehicle batteries Pressure difference is excessive, not can be carried out direct current charge-discharge, please exchange two truck positions ".Operator needs two vehicles carrying out position at this time It exchanges, after the completion, the first vehicle 10 will be the lesser vehicle of power battery voltage, receive the alternating current of alternating-current charging pile 30, such as This can carry out the step of above-mentioned S1-S2.

Therefore, no matter the power battery of initial two vehicle which is bigger, after being adjusted, receive alternating-current charging pile 30 First vehicle 10 of alternating current will be the lesser vehicle of power battery voltage, receive the second vehicle of the direct current of the first vehicle 10 20 will be the biggish vehicle of power battery voltage.

According to above-mentioned discussion it is found that when after information of voltage judges and enters in direct-current discharge process, at this time first Vehicle 10 will be in AC charging state.

The side that direct current carries out DC charging to the second vehicle 20 is provided by DC charging line 50 about the first vehicle 10 Formula includes but is not limited to following three kinds.

The first:

S5 compares the size of current of alternating current and the size of current of direct current.

S6, when the electric current of alternating current is greater than the electric current of direct current, the first vehicle 10 is provided directly by DC charging line 50 Galvanic electricity is to the second vehicle 20.

In such mode, since the size of current of alternating current is greater than the size of current of direct current, then in alternating-current charging pile 30 can directly charge to the first vehicle 10 by alternating current, and the first vehicle 10 can be by direct current to the second vehicle 20 charge.

Second:

S7 compares the size of current of alternating current and direct current.

S8, when the electric current of alternating current is less than the electric current of direct current, control reduces the electric current of direct current.

S9 when the electric current of direct current after the decrease is less than the electric current of alternating current, controls the first vehicle 10 to the second vehicle 20 charge.

In such mode, the controller of settable first vehicle 10, the controller is controllable to limit the defeated of the first vehicle 10 Electric current out, or the power battery pack of the first vehicle 10 of setting have the function of limitation output electric current, to can control reduction straight The electric current of galvanic electricity, and the electric current for controlling the direct current after reducing is less than the electric current of alternating current, can so pass through alternating-current charging pile 30 It charges to the first vehicle 10, the first vehicle 10 charges to the second vehicle 20.

The third:

S10 controls the first vehicle 10 according to the preset intermittent time and charges at intervals to the second vehicle 20, the intermittent time It charges to rear first vehicle 10 to the second vehicle 20 for preceding first vehicle 10 to 20 charging finishing time of the second vehicle The first time of start time.

S11, control control the first vehicle 10 with preset duration of charge and fill within the duration to the second vehicle 20 Electricity, then the interval intermittent time is charged next time again, and the duration is that first vehicle 10 charges to the second vehicle 20 Start time is to the first vehicle 10 to the second time of 20 charging finishing time of the second vehicle.

In such mode, the electric current of either alternating current is big or the electric current of direct current is big, and the first vehicle can be set 10, which continued for the second time, charges to the second vehicle 20,10 interval of the first vehicle of setting at the first time not to the second vehicle 20 into Row charging, thereby may be ensured that can both charge to the first vehicle 10, also charge to the second vehicle 20.

It, then can be by interval of just opening the first vehicle 10 at the first time to second in a kind of concrete implementation mode Vehicle 20 is charged (such as 30min), and the second time persistently charged every time is no more than certain time (such as 15min), tool The time interval of body and the duration to charge every time can carry out Optimal Calibration by experimental data, this two item data is not required to It is strictly required.Although can so guarantee that the first vehicle 10 can consume a large amount of electric energy in direct-current discharge, it is being spaced Period can carry out electric energy supplement, the so form of interval interaction by AC charging system again, guarantee first after a period of time Vehicle 10 can be filled with comparable electricity with 20 vehicle of the second vehicle and intervene without operator.Such mode is suitable for The battery system of first vehicle 10 does not have current-limiting function or the first vehicle 10 is also not provided with controller.

In the application, the first vehicle 10 and the second vehicle 20 stop having following three kinds the case where charging.

The first:

S12 compares the charge capacity of the second vehicle 20 and the default electricity of the second vehicle 20.

S13, when the charge capacity of the second vehicle 20 reaches the default electricity of the second vehicle 20, the first vehicle 10 stops It charges to the second vehicle 20.

In such mode, in a kind of specific embodiment, the first vehicle 10 and the second vehicle 20 have controller, the second vehicle When 20 controller determines that power battery electricity reaches default electricity (Full Charge Capacity), is sent by DC charging line 50 and stop referring to It enables to the first vehicle 10, the first vehicle 10 includes charge switch, and the controller of the first vehicle 10 is after receiving halt instruction, control System disconnects charge switch, stops charging to the second vehicle 20.Specifically, if the second vehicle 20 is first charged to preset numerical value (Full Charge Capacity), then the second vehicle 20 can issue direct current charge-discharge circuit stopping request, the first vehicle 10 according to national standard into Row response.After the first vehicle 10, which discharges, to be stopped, what the second vehicle 20 then can be conventional walks the process full of suspend mode, and hereafter the 20 liang of vehicles of one vehicle 10 and the second vehicle are only merely that physically there are also double-lines to link together, but there will be no information with And the interaction of electric current.

Second:

S14, compare the charge capacity of the first vehicle 10 and the default electricity of the first vehicle 10 and compared with the second vehicle The default electricity of 20 charge capacity and the second vehicle 20.

S15 reaches the default electricity of the first vehicle 10 in the charge capacity of the first vehicle 10, and the second vehicle 20 is When charge capacity reaches the default electricity of the second vehicle 20, the stopping of the first vehicle 10 charges to the second vehicle 20, and exchange is filled The electric stopping of stake 30 charges to the first vehicle 10.

In such mode, in a kind of specific embodiment, the first vehicle 10 and the second vehicle 20 have controller, the second vehicle When 20 controller determines that power battery electricity reaches default electricity (Full Charge Capacity), is sent by DC charging line 50 and stop referring to It enables to the first vehicle 10, the first vehicle 10 includes charge switch, and the controller of the first vehicle 10 is after receiving halt instruction, control System disconnects charge switch, stops charging to the second vehicle 20.

Alternating-current charging pile 30 also has controller, and the controller of the first vehicle 10 determines that power battery electricity reaches default electricity When (Full Charge Capacity), halt instruction is sent to alternating-current charging pile 30 by AC charging line 40, alternating-current charging pile 30 includes that charging is opened It closes, for the controller of alternating-current charging pile 30 after receiving halt instruction, control disconnects charge switch, and the first vehicle 10 is filled in stopping Electricity.

In such mode, if the first vehicle 10 is first charged to default electricity (Full Charge Capacity), it cannot walk and stop full of lower electricity The process of dormancy, and be held in the state powered on, until the second vehicle 20 is first completed to be full of and after lower electric suspend mode, the first vehicle 10 The process full of lower electricity can be walked.

The third:

When the stopping offer alternating current of alternating-current charging pile 30 charges to the first vehicle 10, the first vehicle 10 stops providing straight Galvanic electricity carries out DC charging to the second vehicle 20.That is, in such mode, if the first vehicle 10 is stopped filling by user Electricity, then the first vehicle 10 can be automatically stopped the discharge flow path to the second vehicle 20, while will not have again electricity with the second vehicle 20 The interaction of stream and signal.

In other implementations, if the second vehicle 20 is stopped charging by user, the first vehicle 10 continues to keep handing over Current charge, without interruption.

The above disclosure is only the preferred embodiments of the present invention, cannot limit the right model of the present invention with this certainly It encloses, those skilled in the art can understand all or part of the processes for realizing the above embodiment, and wants according to right of the present invention Made equivalent variations is sought, is still belonged to the scope covered by the invention.