CN114506239A

CN114506239A - Power distribution method, system, medium and device of charging equipment and charging and replacing power station

Info

Publication number: CN114506239A
Application number: CN202210233900.5A
Authority: CN
Inventors: 赵金程
Original assignee: Weilai Automobile Technology Anhui Co Ltd
Current assignee: Weilai Automobile Technology Anhui Co Ltd
Priority date: 2022-03-10
Filing date: 2022-03-10
Publication date: 2022-05-17

Abstract

The invention relates to the technical field of charging and battery replacing, in particular to a power control method, a system, a medium, a device and a charging and battery replacing station of charging equipment. The method aims to solve the problem that the operation of the whole station is blocked when a master control system fails in the conventional power management method for the charging and replacing power station. To this end, the charging and replacing power station of the present application includes a plurality of charging devices, and the control units of the plurality of charging devices are connected in communication with each other, and the power control method of the charging devices includes: sending the running information of the charging equipment to the outside, and acquiring the running information of other charging equipment; calculating the total requested power of the charging and replacing power station based on the operation information of the charging and replacing power station and the operation information of other charging equipment; comparing the total requested power with the total power limit value of the charging and replacing power station; determining the actual distribution power of the charging equipment where the charging equipment is located based on the comparison result; and distributing power to the charging equipment where the charging equipment is located according to the actual distributed power. This application can improve and fill the whole operation stability who trades the power station.

Description

Power distribution method, system, medium and device of charging equipment and charging and replacing power station

Technical Field

The invention relates to the technical field of charging and battery replacing, in particular to a power control method, a system, a medium, a device and a charging and battery replacing station of charging equipment.

Background

At present, the electric automobile industry is developed rapidly, and consumers tend to select electric automobiles as transportation tools more and more. With the increasing preservation quantity of electric automobiles, the demand for powering on the electric automobiles is correspondingly increasing, and various powering-on devices are also emerging. The charging and replacing power station is an important facility capable of realizing rapid power-on at present.

Various charging devices are configured in the charging and replacing station, such as a battery bin and a direct current charging pile, the battery bin is generally matched with a replacing platform for use, the battery bin charges a power battery, and the replacing platform replaces the power battery for the electric automobile. And the general power of direct current charging stake is great, can realize electric automobile's quick charge. However, more charging devices are used, which means that more capacitance is needed, and the capacitance cannot be provided infinitely, so that the charging and replacing station needs to make power management of itself, ensure that the charging and replacing station can fully utilize limited power capacity, ensure that the charging and replacing station cannot be used in excess, and avoid capacity overrun penalty or overload trip. At present, a traditional power management method is to set a set of master control system in a charging and replacing station as an intermediate dispatch, and comprehensively coordinate the power consumption of devices such as a battery compartment and a direct current charging pile in the station through the master control system. However, the disadvantage of this arrangement is also relatively outstanding, and when the master control system fails, the whole station operation is blocked.

Accordingly, there is a need in the art for a new power control method of a charging device to solve the above-mentioned problems.

Disclosure of Invention

In order to solve at least one of the above problems in the prior art, that is, to solve the problem that the operation of the whole charging and replacing station is blocked when the master control system fails in the power management method of the existing charging and replacing station, the present application provides a power control method of a charging device, which is applied to a charging and replacing station, the charging and replacing station includes a plurality of charging devices, each charging device is configured with a charging unit and a control unit, the control units of the plurality of charging devices are in communication connection,

the power control method comprises the following steps:

the method comprises the steps of sending the operation information of the charging equipment where the charging equipment is located outwards, and obtaining the operation information of other charging equipment;

calculating the total request power of the charging and replacing station based on the operation information of the charging equipment where the charging and replacing station is located and the operation information of other charging equipment;

comparing the total requested power with a total power limit value of the charging and replacing power station;

determining the actual distribution power of the charging equipment where the charging equipment is located based on the comparison result;

performing power distribution on the charging equipment where the charging equipment is located according to the actual distributed power;

wherein the operation information at least includes a charging request power.

In a preferred embodiment of the power control method for a charging device, the step of determining the actually allocated power of the charging device on which the charging device is located based on the comparison result further includes:

if the total requested power is larger than the total power limit value, determining the actual distribution power according to a preset distribution strategy;

the preset allocation strategy is distributed evenly, distributed according to the proportion of the charging request power of the charging equipment where the preset allocation strategy is located, or distributed according to the priority of the charging equipment where the preset allocation strategy is located.

In a preferred technical solution of the power control method of the charging device, when the preset allocation policy is the average allocation, "determining the actual allocation power according to a preset allocation policy" further includes:

determining the actual allocated power as a ratio between the total power limit and a number of charging devices having a useful power demand.

In a preferred embodiment of the above power control method for a charging device, after the step of determining that the actually allocated power is a ratio between the total power limit and the number of charging devices with useful power demands, the power control method further includes:

comparing the charging request power of the charging equipment where the charging equipment is located with the actually distributed power;

if the charging request power is smaller than or equal to the actual distribution power, further determining the actual distribution power as the charging request power, and sending redundant power information outwards;

and if the charging request power is larger than the actually distributed power, acquiring redundant power information of other charging equipment, and determining the actually distributed power again based on the redundant power information of the other charging equipment.

In a preferred technical solution of the power control method of the charging device, when the preset allocation policy is the ratio allocation of the charging request power according to the charging device in which the power control method of the charging device is located, "determining the actually allocated power according to the preset allocation policy" further includes:

and determining the actual distribution power as the product of the ratio of the charging request power of the charging equipment where the actual distribution power is located to the total request power and the total power limit value.

In a preferred technical solution of the power control method of the charging device, the operation information further includes a charging start time and a charging start sequence number, and when the preset allocation policy is the priority of the charging device in which the operation information is stored, the step of determining the actual allocation power according to the preset allocation policy further includes:

determining the actual distribution power according to the sequence of the charging starting sequence numbers;

wherein, the charging start sequence number is determined as follows:

sequencing the charging starting time of the charging equipment where the charging equipment is located and the obtained charging starting time;

and determining the charging starting sequence number of the charging equipment where the charging equipment is located according to the sequencing of the charging starting time.

In a preferable embodiment of the power control method of the charging device, the step of "determining the actually allocated power in order of the charging start number" further includes:

acquiring actual distributed power obtained by all charging equipment with the charging starting serial numbers positioned before the charging starting serial numbers corresponding to the charging equipment;

calculating the remaining power to be distributed based on the actual distributed power obtained by all the charging devices and the total power limit value;

comparing the charging request power of the charging equipment where the charging equipment is located with the residual power to be distributed;

if the charging request power is less than or equal to the residual power to be distributed, determining the actual distributed power as the charging request power;

and if the charging request power is larger than the residual power to be distributed, determining the actual distributed power as the residual power to be distributed.

In a preferable aspect of the power control method for a charging device, the power control method further includes:

and if the actual distributed power is zero, adjusting the charging equipment where the charging equipment is located to be in a non-chargeable state.

and if the total requested power is smaller than or equal to the total power limit value, determining that the actually distributed power is the charging requested power of the charging equipment where the actually distributed power is located.

acquiring the real-time total power of the charging and replacing power station;

comparing the real-time total power with the total power limit value;

and when the real-time total power is greater than the total power limit value, selectively controlling the charging power of the charging equipment where the charging equipment is located to reduce so that the total power of the charging and replacing station is reduced to the total power limit value.

In a preferred embodiment of the power control method for a charging device, the step of selectively controlling the charging power of the charging device where the charging device is located to be reduced further includes:

calculating a difference between the real-time total power and the total power limit;

calculating a ratio of the difference to the number of charging devices having a useful power requirement as a power reduction value;

and controlling the charging power of the charging equipment where the charging equipment is located to reduce the power reduction value.

calculating the product of the ratio of the charging request power of the charging equipment where the charging equipment is located to the total request power and the difference value as a power reduction value;

judging whether the priority of the charging equipment where the charging equipment is located is the lowest;

if yes, calculating a difference value between the real-time total power and the total power limit value;

and controlling the charging power of the charging equipment where the charging equipment is located to reduce the difference.

acquiring the communication state of the charging equipment where the charging equipment is located;

and if the charging equipment where the charging equipment is located is in a disconnected state, determining that the actually distributed power is the preset power.

The application also provides a power control system of the charging equipment, which is applied to a charging and replacing station, the charging and replacing station comprises a plurality of charging equipment, each charging equipment is provided with a charging unit and the power control system, the power control systems of the plurality of charging equipment are in communication connection,

the power control system includes:

the receiving and sending module is configured to send the operation information of the charging equipment where the receiving and sending module is located outwards and acquire the operation information of other charging equipment;

the calculation module is configured to calculate the total requested power of the charging and replacing power station based on the operation information of the charging equipment where the calculation module is located and the operation information of other charging equipment;

a comparison module configured to compare a magnitude between the total requested power and a total power limit of the charging station;

a power determination module configured to determine an actual distributed power of a charging device in which the power determination module is located, based on a comparison result;

the power distribution module is configured to distribute power to the charging equipment where the power distribution module is located according to the actual distributed power;

wherein the operation information at least includes a charging request power.

In a preferred embodiment of the power control system of the charging device, the power determining module is further configured to determine the actual distributed power of the charging device where the power determining module is located based on the comparison result by:

In a preferred technical solution of the power control system of the charging device, when the preset distribution strategy is the average distribution, the power determining module is further configured to determine the actual distribution power according to the preset distribution strategy by:

In a preferred technical solution of the power control system of the charging device, the comparing module is further configured to compare the charging request power of the charging device where the comparing module is located with the actual distributed power after determining that the actual distributed power is a ratio between the total power limit value and the number of charging devices with useful electricity demand;

the power determination module is further configured to further determine the actually allocated power as the charging request power when the charging request power is less than or equal to the actually allocated power, and determine the actually allocated power again based on redundant power information of other charging devices when the charging request power is greater than the actually allocated power;

the transceiver module is further configured to send out redundant power information when the charging request power is less than or equal to the actually allocated power, and obtain redundant power information of other charging devices when the charging request power is greater than the actually allocated power.

In a preferred technical solution of the power control system of the charging device, when the preset allocation policy is the duty allocation of the charging request power according to the charging device where the power determination module is located, the power determination module is further configured to determine the actual allocation power according to the preset allocation policy by:

In a preferred technical solution of the power control system of the charging device, when the preset allocation policy is the priority of the charging device located according to the power control system, the power determining module is further configured to determine the actual allocation power according to the preset allocation policy by:

wherein, the charging start sequence number is determined as follows:

In a preferred embodiment of the power control system of the charging device, the power determining module is further configured to determine the actually allocated power in the order of the charging start sequence number by:

In a preferable embodiment of the power control system of the charging device, the power control system further includes:

a state adjustment module configured to adjust a charging device in which the state adjustment module is located to a non-chargeable state when the actual distribution power is zero.

In a preferred technical solution of the power control system of the charging device, the transceiver module is further configured to obtain a real-time total power of the charging and replacing power station;

the comparison module is further configured to compare the real-time total power to the total power limit;

the power distribution module is further configured to selectively control the charging power of the charging device where the power distribution module is located to be reduced when the real-time total power is greater than the total power limit value, so that the total power of the charging and replacing power station is reduced to the total power limit value.

In a preferred technical solution of the power control system of the charging device, the power distribution module is further configured to selectively control the charging power of the charging device where the power distribution module is located to decrease by:

calculating a ratio between the difference and the number of charging devices required for useful electricity as a power reduction value;

In a preferred technical solution of the power control system of the charging device, the transceiver module is further configured to acquire a communication state of the charging device where the transceiver module is located;

the power determination module is further configured to determine that the actually distributed power is a preset power when the charging device where the power determination module is located is in a disconnected state.

The present application also provides a computer readable storage medium storing a plurality of program codes, the program codes being adapted to be loaded and executed by a processor to perform the power control method of the charging device according to any one of the above preferred embodiments.

The present application also provides a control device, including:

a processor;

a memory adapted to store a plurality of program codes adapted to be loaded and run by the processor to perform the power control method of the charging device of any of the above preferred embodiments.

The application also provides a charging and replacing station, which comprises a plurality of charging devices, wherein each charging device is provided with a charging unit and the control device in the preferable technical scheme, and the control devices of the charging devices are in communication connection.

According to the power control method, the control units of the plurality of charging devices are in communication connection to form a power distribution strategy of a 'no master control mode', each charging device can calculate and determine the available actual distribution power of the charging device based on the acquired operation information of other charging devices, and then power distribution is performed based on the respective actual distribution power, so that operation blockage caused by faults of a master control system in a traditional 'master-slave mode' is avoided on the premise of realizing comprehensive power management of the charging and switching station, and the overall operation stability of the charging and switching station is improved.

Further, by determining the actual distribution power based on the preset distribution strategy when the total requested power is greater than the total power limit, the present application can achieve maximum power distribution of the plurality of charging devices under the total power limit.

Further, under the strategy of average distribution, redundant power information is sent outwards when the charging request power is smaller than or equal to the actually distributed power, so that the redundant power can be continuously distributed to other charging equipment for use, and the utilization rate of the capacity of the station is effectively improved. By acquiring the redundant power information of other charging equipment when the charging request power is greater than the actually distributed power and determining the actually distributed power again, the redundant power of other charging equipment can be effectively utilized, and the utilization rate of the station capacity is improved.

Further, under the strategy of distribution according to priority, the actual distribution power is determined according to the charging starting sequence number, so that the charging requirement of the high-priority charging equipment can be met preferentially according to the first-come-first-obtained principle.

Further, under the strategy of distribution according to the priority, if the actually distributed power is zero, the charging equipment where the charging equipment is located is adjusted to be in a non-chargeable state, and the user can be effectively guided to carry out charging selection. For example, the user can inquire whether each charging device is available through the cloud or the mobile phone APP, and therefore make a reasonable charging decision.

Furthermore, the real-time total power of the charging and replacing power station is monitored and calculated in real time, and the power distribution of the charging equipment is controlled based on the real-time total power and the total power limit value of the charging and replacing power station.

Furthermore, through distributing preset power to the charging equipment where the charging equipment is located when the communication of the charging equipment is disconnected, the conditions of tripping, device damage and the like caused by the fact that bus power is out of limit when the charging equipment is abnormal, which are possibly caused, are avoided, and the operation and maintenance cost of the whole station is reduced.

Scheme 1. a power control method for a charging device, applied to a charging and swapping station, is characterized in that the charging and swapping station includes a plurality of charging devices, each charging device is configured with a charging unit and a control unit, the control units of the plurality of charging devices are connected in a communication manner,

the power control method comprises the following steps:

wherein the operation information at least includes a charging request power.

Scheme 2. the power control method for a charging device according to scheme 1, wherein the step of determining the actually allocated power of the charging device in which the charging device is located based on the comparison result further includes:

Scheme 3. the power control method of a charging device according to scheme 2, wherein when the preset allocation policy is the average allocation, "determining the actual allocation power according to a preset allocation policy" further includes:

Scheme 4. the power control method of a charging device according to scheme 3, characterized in that after the step of determining that the actual allocated power is the ratio between the total power limit and the number of charging devices with useful power demand, the power control method further comprises:

The method according to claim 5, in the power control method of a charging device according to claim 2, wherein when the preset allocation policy is allocation of the charging request power according to the charging device in which the power is located in a proportion, "determining the actually allocated power according to the preset allocation policy" further includes:

Scheme 6. the power control method for a charging device according to scheme 2, wherein the operation information further includes a charging start time and a charging start sequence number, and when the preset allocation policy is the priority of the charging device in which the operation information is stored, the step of determining the actual allocation power according to the preset allocation policy further includes:

wherein, the charging start sequence number is determined as follows:

Claim 7 is the power control method of a charging apparatus according to claim 6, wherein the step of "determining the actually allocated power in order of the charging start sequence number" further includes:

The power control method of the charging apparatus according to claim 7, characterized in that the power control method further includes:

Scheme 9. the power control method for a charging device according to scheme 1, wherein the step of determining the actually allocated power of the charging device in which the charging device is located based on the comparison result further includes:

The power control method of the charging apparatus according to claim 2, characterized in that the power control method further includes:

comparing the real-time total power with the total power limit value;

The method according to claim 10, wherein the step of selectively controlling the charging power of the charging device to be lowered further includes:

The method according to claim 12, wherein the step of selectively controlling the charging power of the charging device to be lowered further includes:

The power control method of the charging apparatus according to claim 1, characterized in that the power control method further includes:

The power control system of the charging device is applied to a charging and replacing station, and is characterized in that the charging and replacing station comprises a plurality of charging devices, each charging device is provided with a charging unit and the power control system, the power control systems of the plurality of charging devices are in communication connection,

the power control system includes:

wherein the operation information at least includes a charging request power.

The power control system of a charging device according to claim 15, wherein the power determination module is further configured to determine the actual distributed power of the charging device where the power determination module is located based on the comparison result by:

The power control system of the charging device of claim 16, wherein when the preset distribution strategy is the average distribution, the power determining module is further configured to determine the actual distribution power according to a preset distribution strategy by:

The power control system of a charging device according to claim 17, characterized in that,

the comparison module is further configured to compare the charging request power of the charging device where the comparison module is located with the actual distribution power after determining that the actual distribution power is a ratio between the total power limit value and the number of charging devices with useful electricity demands;

The power control system of a charging device according to claim 16, wherein when the preset allocation policy is a duty allocation of the charging request power according to the charging device in which the power determination module is located, the power determination module is further configured to determine the actual allocation power according to the preset allocation policy by:

Scheme 20, the power control system of a charging device according to scheme 16, wherein when the preset allocation policy is the priority of the charging device where the power control system is located, the power determination module is further configured to determine the actual allocation power according to the preset allocation policy by:

wherein, the charging start sequence number is determined as follows:

The power control system of a charging device according to claim 20, wherein the power determination module is further configured to determine the actually allocated power in order of a charging start sequence number by:

and if the charging request power is larger than the residual power to be distributed, determining the actual distribution power as the residual power to be distributed.

The power control system of the charging apparatus according to claim 20, characterized in that the power control system further includes:

a state adjustment module configured to adjust a charging device in which the charging device is located to a non-chargeable state when the actual distribution power is zero.

Scheme 23. the power control system of a charging device according to claim 15, wherein the power determination module is further configured to determine the actual distributed power of the charging device where the power determination module is located based on the comparison result by:

The power control system of a charging device according to claim 16, characterized in that,

the transceiver module is further configured to obtain real-time total power of the charging and swapping station;

The power control system of the charging device according to claim 24, wherein the power distribution module is further configured to selectively control the charging power of the charging device to be reduced by:

Scheme 26. the power control system of a charging device according to scheme 24, wherein the power distribution module is further configured to selectively control the charging power of the charging device to decrease by:

Scheme 27. the power control system of a charging device according to scheme 24, wherein the power distribution module is further configured to selectively control the charging power of the charging device to decrease by:

The power control system of a charging device according to claim 15, characterized in that,

the transceiver module is further configured to acquire a communication state of a charging device in which the transceiver module is located;

Scheme 29. a computer readable storage medium storing a plurality of program codes, wherein the program codes are adapted to be loaded and executed by a processor to perform the power control method of the charging apparatus of any of the schemes 1 to 14.

A control apparatus according to claim 30, comprising:

a processor;

a memory adapted to store a plurality of program codes adapted to be loaded and run by the processor to perform the power control method of the charging device of any of schemes 1 to 14.

The charging and replacing power station according to claim 31, wherein the charging and replacing power station comprises a plurality of charging devices, each charging device is provided with a charging unit and the control device according to claim 30, and the control devices of the plurality of charging devices are in communication connection with each other.

Drawings

A power control method, a system, a medium, an apparatus, and a charging station of a charging device of the present application are described below with reference to the accompanying drawings. In the drawings:

fig. 1 is a system diagram of a charging and swapping station according to the present application;

fig. 2 is a flowchart of a power control method of a charging device of the present application;

FIG. 3 is a schematic diagram of X of the present application;

fig. 4 is a system diagram of a power control system of the charging device of the present application.

List of reference numerals

1. Charging piles; 11. a control unit; 2. a communication bus; 3. a vehicle to be charged; 4. a bus bar; 5. measuring and controlling an ammeter;

100. a power control system; 110. a transceiver module; 120. a calculation module; 130. a comparison module; 140. a power determination module; 150. a power distribution module; 160. and a state adjusting module.

Detailed Description

Preferred embodiments of the present application are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principles of the present application, and are not intended to limit the scope of protection of the present application. For example, although the present embodiment is described with reference to a plurality of charging piles in a charging and replacing power station, this is not intended to limit the scope of the present application, and those skilled in the art may apply the present application to other application scenarios without departing from the principles of the present application. For example, the method of the application can also be applied to a plurality of battery bins in a charging and replacing power station or a scene in which the battery bins are combined with charging piles.

It should be noted that, in the description of the present application, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those skilled in the art as the case may be.

Referring first to fig. 1, a charging and replacing power station of the present application will be briefly described. Fig. 1 is a system diagram of a charging and swapping station according to the present application.

As shown in fig. 1, the charging and replacing power station of the present application includes a plurality of charging devices, in this embodiment, the charging devices are charging piles 1 (hereinafter, or charging pile 1 for short) for direct current, each charging pile 1 includes a charging gun, a charging unit and a control unit 11, the charging gun can be inserted and connected with a charging seat provided on a new energy vehicle, the charging gun is connected with a bus 4 of the charging and replacing power station through the charging unit, the control unit 11 is electrically connected with the charging unit for distributing power for the charging unit, thereby controlling the charging gun to charge the new energy vehicle. In the present application, the control unit 11 preferably uses an existing controller of the charging pile 1, and of course, a controller may be additionally added to implement the control method described below in the present application.

Particularly, a plurality of charging piles 1 in this application are communicated with each other through communication bus 2 for networking communication can be carried out between the control unit 11, data interaction can be carried out. Communication mode does not limit in this application, as long as CAN realize each and fill communication connection between electric pile 1, if fill communication between electric pile 1 and CAN adopt modes such as broadband power line carrier (HPLC), CAN bus, ethernet, Zigbee, bluetooth to realize.

With reference to fig. 1, the charging and replacing station further includes a measurement and control ammeter 5, and the measurement and control ammeter 5 is disposed on the bus 4 and is in communication connection with one of the plurality of charging piles 1. The measurement and control ammeter 5 is used for measuring the real-time total power of the bus 4 and interacting the measurement data with the charging pile 1. Therefore, the control unit 11 of the charging pile 1 connected with the measurement and control electric meter 5 can obtain the real-time total power of the bus 4, and the real-time total power of the bus 4 can be obtained and sent out.

Before the charging and replacing stations are put into use, the total power limit value of the charging and replacing stations and the number of the charging piles 1 configured in the charging and replacing stations are preset in advance in the control unit 11 of each charging pile 1. When the charging and replacing station operates, each control unit 11 periodically sends out the operation information of the charging pile 1 where it is located, and receives the operation information of other charging piles 1, for example, the operation information includes one or more of charging request power, real-time power of the charging pile 1, charging start time, charging start sequence number, power pre-distribution value, and real-time total power of the bus 4 (the charging pile 1 connected with the measurement and control electric meter 5 sends out), then the control unit 11 of each charging pile 1 calculates the total request power of all the charging piles 1 based on the obtained operation information of other charging piles 1 and its own operation information, then determines the actual distribution power which can be respectively distributed based on the total request power and the total power limit of the charging and replacing station (i.e. the power limit of the bus 4), and finally performs power distribution to the charging pile 1 where it is located based on the respective obtained actual distribution power, so that each charging pile 1 performs charging operation according to the power distributed to each charging pile.

As described in the background art, in a conventional charging and replacing station, a set of master control system is generally arranged to connect with each charging device to comprehensively coordinate power distribution of each charging device, and the control manner of the "master-slave mode" often causes the whole charging and replacing station to be paralyzed when the master control system fails. According to the power distribution method and device, communication connection is arranged among the control units 11 of the charging piles 1, so that each charging pile 1 can calculate and determine the available actual distribution power of the charging pile 1 based on the acquired running information of other charging devices, and then power distribution is carried out based on the respective actual distribution power, therefore, operation blockage caused by faults of a main control system in a traditional 'master-slave mode' is avoided on the premise of achieving comprehensive power management of the charging and switching station, and the overall operation stability of the charging and switching station is improved. Moreover, the existing hardware condition of the existing charging pile 1 is fully utilized, and the setting of a master control system is omitted, so that the effect of saving the construction cost of the charging and replacing power station can be realized.

It should be noted that, although a specific arrangement of the charging and replacing power station is described in the foregoing embodiment, this is not intended to limit the scope of the present application. Without departing from the principle of the present application, a person skilled in the art may adjust the specific form of the charging and swapping station, so that the power control method described below in the present application can be applied to more application scenarios.

For example, although the above embodiment is described in connection with a charging and replacing power station including a plurality of dc charging poles 1, this is not intended to limit the scope of the present application, and those skilled in the art may apply the present application to other application scenarios without departing from the principle of the present application. For example, the method and the device can also be applied to a scene with the charging pile 1 and the battery replacing station at the same time or a scene with the battery replacing station only. The power conversion station is provided with a power conversion platform and a plurality of battery bins, the power conversion platform is used for replacing power batteries for the vehicles to be converted, and the battery bins are used for charging the batteries with insufficient electricity. Each battery compartment includes a charging branch that engages and charges the power battery when the power battery is located within the battery compartment. To achieve communication between the battery compartments or between the battery compartments and the charging pile 1, a control unit may be provided on each battery compartment, or more cost-effective, a Battery Management System (BMS) on the battery may be used as the control unit.

For another example, in another alternative embodiment, although the measurement and control meter 5 is provided in combination with the bus 4 in the charging and replacing power station to obtain the real-time total power of the charging and replacing power station, the measurement and control meter 5 is not necessary in this application, and a person skilled in the art may decide on the basis of a specific application scenario. For example, the real-time power of all the charging piles 1 may be added to obtain the real-time total power of the charging and replacing power station, or the measurement and control meter 5 may be in communication connection with a plurality of charging piles 1 at the same time.

For another example, although the above embodiment is described by presetting the total power limit of the charging and replacing power stations and the number of the charging piles 1 configured in the charging and replacing power stations in advance in each control unit 11, this embodiment is not exclusive, and those skilled in the art can adjust the above embodiment as long as required data can be effectively acquired in the operation process. For example, the total power limit value may also be stored in one of the charging piles 1, and sent to other charging piles 1 through the charging pile 1, or the total power limit value may also be set at a cloud and sent to each charging pile 1 through the cloud.

Similarly, the operation information of the charging pile 1 is not limited to the above exemplary embodiment, and those skilled in the art can increase or decrease the operation information based on the requirement of a specific application scenario.

Of course, the above alternative embodiments, and the alternative embodiments and the preferred embodiments can also be used in a cross-matching manner, so that a new embodiment is combined to be suitable for a more specific application scenario.

Referring to fig. 2, a power control method of a charging device according to the present application will be described by taking an example in which a charging and replacing power station includes a plurality of charging piles. Fig. 2 is a flowchart of a power control method of a charging device according to the present application.

As shown in fig. 2, in order to solve the problem that the operation of the entire charging station is blocked when the master control system fails in the power management method of the conventional charging and replacing power station, the power control method of the charging device of the present application includes:

s101, sending the operation information of the charging equipment where the charging equipment is located to the outside, and acquiring the operation information of other charging equipment. For example, the operation information may include one or more of a charging request power, a real-time power of the charging pile, a charging start time, a charging start serial number, a power pre-allocation value, and a real-time total power of the bus (the charging pile connected to the measurement and control electric meter sends out), and the selection of the operation information may be determined by a person skilled in the art based on a specific application scenario. All control units in the charging and replacing station periodically send out the operation information of the charging pile where the control unit is located, and obtain the operation information sent by the control units of other charging piles. The charging request power of the charging pile with the fault and the charging pile without the charging requirement is 0, and the charging pile with the charging requirement sends the charging request power of the charging pile to the outside according to specific requirements.

And S103, calculating the total requested power of the charging and replacing power station based on the operation information of the charging equipment where the charging equipment is located and the operation information of other charging equipment. For example, for each charging pile, the operation information of all other charging devices is acquired in addition to the operation information of the charging pile, and based on all the operation information, each charging pile can calculate the total requested power, for example, the charging requested powers in all the operation information are added to obtain the total requested power.

And S105, comparing the total requested power with the total power limit value of the charging and replacing power station. For example, for each charging and replacing power station, the power of the bus of the charging and replacing power station is limited, which is referred to as a total power limit in the present application, and the total power limit may be a fixed value set manually, or may be calculated or obtained in real time based on information of an upstream power grid. In the application, the total power limit value can be preset in the control unit in advance, and is directly called by the control unit in the calculation process. After the total power limit value is obtained and the total requested power is calculated, the total power limit value and the total requested power can be compared by calculating the difference or the ratio between the total power limit value and the total requested power.

And S107, determining the actual distributed power of the charging equipment where the charging equipment is located based on the comparison result. For example, when the total requested power is less than or equal to the total power limit, it is proved that the current total power limit can satisfy the power requests of all the charging piles, and at this time, each control unit determines that the actual distributed power that can be obtained by the charging pile in which the control unit is located is the charging request power of the corresponding charging pile. When the total requested power is greater than the total power limit value, the current total power limit value is proved to be incapable of meeting the power requests of all charging piles, and further power distribution is needed to avoid the over-limit operation of the power of the whole station. For example, the power request of part of the charging piles may be preferentially satisfied, or the power may be distributed according to a certain distribution ratio, and the following embodiments will explain several distribution methods.

And S109, distributing power to the charging equipment according to the actually distributed power. After each control unit determines the actual distribution power of the corresponding charging pile, each control unit performs power distribution on the charging pile at the position of the control unit according to the actual distribution power, and charging work of the charging pile is achieved.

Through setting up the control unit communication connection of a plurality of electric piles, and form the power distribution strategy of "no master control mode" based on this, make every electric pile of filling can both calculate and confirm the actual distribution power that self can be obtained based on the running information of self and the running information of other electric piles of obtaining, then carry out power distribution based on respective actual distribution power, thereby under the prerequisite that realizes the comprehensive power management that fills the power station, avoided the operation that the master control system trouble leads to under traditional "master-slave mode" to be obstructed, improve and fill the whole operation stability that trades the power station. Moreover, the existing control unit of the existing charging pile is fully utilized, and the setting of a master control system is omitted, so that the effect of saving the construction cost of the charging and replacing power station can be realized.

The following describes a more preferred embodiment of the present application.

In one embodiment, S107 further comprises: if the total requested power is smaller than or equal to the total power limit value, determining the actual distributed power as the charging requested power of the charging pile in which the actual distributed power is located; and if the total requested power is larger than the total power limit value, determining the actual distribution power according to a preset distribution strategy. The preset distribution strategy is average distribution, distribution according to the proportion of the charging request power of the charging pile where the preset distribution strategy is located, or distribution according to the priority of the charging pile where the preset distribution strategy is located.

For example, when the total requested power is less than or equal to the total power limit, it is proved that the current total power limit can satisfy the power requests of all charging piles. At this time, each control unit determines that the actual distribution power is the charging request power of the corresponding charging pile. When the total requested power is greater than the total power limit value, the current total power limit value is proved to be incapable of meeting the power requests of all charging piles, and further power distribution is needed to avoid the over-limit operation of the power of the whole station. The method and the device provide three distribution strategies based on possible application scenes, wherein the three strategies are respectively average distribution, proportion distribution according to the charging request power of the charging pile where the charging pile is located, and priority distribution according to the charging pile where the charging pile is located.

By determining the actual distribution power based on the preset distribution strategy when the total requested power is larger than the total power limit, the maximum power distribution of the plurality of charging piles can be realized under the total power limit.

The three allocation strategies described above are described in an expanded manner below.

(1) When the preset allocation strategy is average allocation, "determining actual allocation power according to the preset allocation strategy" further includes: and determining the actual distribution power as the ratio of the total power limit value to the number of charging piles with the useful electricity demand.

Specifically, under the average distribution strategy, the actual distribution power which can be obtained by each control unit is calculated by each control unit and is the ratio of the total power limit value to the number of the charging piles with the useful electricity demand. In other words, the total power limit is evenly distributed to all charging piles with charging demands.

In one embodiment, after the step of determining the actual allocated power as a ratio between the total power limit and the number of charging piles for the useful power demand, the power control method further comprises: comparing the charging request power of the charging pile with the actual distribution power; if the charging request power is smaller than or equal to the actual distribution power, further determining the actual distribution power as the charging request power, and sending redundant power information outwards; and if the charging request power is larger than the actually distributed power, acquiring redundant power information of other charging piles, and determining the actually distributed power again based on the redundant power information of other charging piles.

Specifically, after each control unit calculates its actual distributed power, the actual distributed power is compared with the charging request power to determine whether there is redundancy in the actual requested power obtained by itself, for example, by determining the magnitudes of the actual distributed power and the charging request power. If the power is redundant, the redundant power can be secondarily distributed to the charging piles which actually distribute the power and are not redundant; and if the redundant power does not exist, acquiring the redundant power of other charging piles on the premise that the redundant power exists in the other charging piles.

For example, for a single charging pile, if it is determined that redundant power exists in the charging pile, the actual distributed power of the charging pile is determined to be the charging request power, and then redundant power information is sent outwards to be used by the remaining charging piles, of which the actual distributed power is not redundant. And if the charging pile is judged not only to have no redundant power but also to have actual distribution power smaller than the charging request power, acquiring redundant power information of other charging piles, and determining the actual distribution power again based on the redundant power information.

In one possible embodiment, the actual allocated power may be determined again based on the redundant power information in any of the following ways:

the first method is as follows: and each charging pile with actual distribution power smaller than the charging request power adds all the acquired redundant power information and then calculates the average value, and then calculates the sum of the actual distribution power and the average value as new actual distribution power. And if the redundant power continues to appear in the partial charging piles after the distribution is finished, the redundant power information is continuously averagely distributed according to the mode until no power redundancy appears in the charging piles.

The second method comprises the following steps: and distributing according to the proportion of the charging request power, namely adding all the obtained redundant power information by each charging pile of which the actual distribution power is smaller than the charging request power to obtain total redundant power, then calculating the product between the ratio of the charging request power of the charging pile in which the charging pile is positioned to the total request power and the total redundant power, and finally adding the product and the current actual distribution power to obtain new actual distribution power.

The third method comprises the following steps: and distributing according to the priority of the charging piles, namely sequencing charging piles of which the actual distribution power is smaller than the charging request power in sequence based on the charging starting time in the acquired operation information of all the charging piles, adding the charging piles of which the charging starting time is the earliest and the actual distribution power is smaller than the charging request power to the actual distribution power of the charging piles to obtain new actual distribution power, adding the charging piles of which the actual distribution power is smaller than the charging request power to the actual distribution power of the charging piles after taking the required power of the charging piles from the total redundant power to obtain new actual distribution power, and repeating until the total redundant power is distributed.

Under the strategy of average distribution, redundant power information is sent outwards when the charging request power is smaller than or equal to the actually distributed power, so that the redundant power can be continuously distributed to other charging piles for use, and the utilization rate of the station capacity is effectively improved. The redundant power information of other charging piles is obtained when the charging request power is larger than the actual distribution power, and therefore the actual distribution power is determined again, so that the redundant power of other charging piles can be effectively utilized, and the utilization rate of the station capacity is improved.

(2) When the preset distribution strategy is distributed according to the proportion of the charging request power of the charging pile in which the preset distribution strategy is positioned, the step of determining the actual distribution power according to the preset distribution strategy further comprises the following steps: and determining the actual distribution power as the product of the ratio of the charging request power of the charging pile where the actual distribution power is located to the total request power and the total power limit value.

Specifically, under the distribution strategy according to the charging request power ratio of the charging pile where the control unit is located, each control unit calculates the actual distribution power which can be obtained by the control unit as the product of the ratio of the charging request power of the charging pile where the control unit is located to the total request power and the total power limit value. In other words, the total power limit is distributed to all charging posts with charging requirements in proportion to the charging request powers.

Under the distribution strategy, all charging piles with charging requirements can be taken care of, and the charging requirements and the charging efficiency are both considered.

(3) When the preset distribution strategy is according to the priority of the charging pile where the preset distribution strategy is located, the step of determining the actual distribution power according to the preset distribution strategy further comprises the following steps: the actual distributed power is determined in the order of the charging start sequence numbers. Wherein, the charging start sequence number is determined as follows: sequencing the charging starting time of the charging pile and the obtained charging starting time; and determining the charging starting sequence number of the charging pile in which the charging pile is positioned according to the sequencing of the charging starting time.

Specifically, the step of "determining the actually distributed power in order of the charge start sequence number" further includes: acquiring actual distributed power obtained by all charging piles with charging starting serial numbers before the charging starting serial numbers corresponding to the charging starting serial numbers; calculating the residual power to be distributed based on the actual distribution power and the total power limit value obtained by all the charging piles; comparing the charging request power of the charging pile with the residual power to be distributed; if the charging request power is less than or equal to the residual power to be distributed, determining the actual distributed power as the charging request power; and if the charging request power is larger than the residual power to be distributed, determining the actual distributed power as the residual power to be distributed.

For example, after the operation information of other charging piles is acquired, each control unit sorts charging start time of the charging pile corresponding to each control unit and charging start time of other charging piles according to a sequence, and each charging pile determines a charging start sequence number of each control unit based on a sorting result. For example, the charging pile that starts charging first confirms that self-charging starts serial number 1, and the charging pile that starts charging secondly confirms that self-charging starts serial number 2, until all charging piles determine self-charging starts serial numbers. If the charging pile is not charging, determining the self charging starting serial number to be 1; if other charging piles are charged, sequencing is carried out next to the existing charging starting sequence numbers; and if the charging pile with the front serial number stops charging, sequentially advancing the charging starting serial number of the charging pile. Wherein, the electric pile that fills of no demand of charging can confirm that self charge the start time and charge the start sequence number and be 255.

After each charging pile determines the charging starting sequence number of the charging pile, the actual distribution power of the charging pile is sequentially determined according to the sequence of the charging starting sequence number. Specifically, the charging pile with the charging starting serial number of 1 confirms the actual distribution power of the charging pile as the charging request power, and then sends the actual distribution power out; after receiving the actual distribution power sent by the charging pile with the charging starting sequence number of 1, the charging pile with the charging starting sequence number of 2 calculates a difference value between a total power limit value and the actual distribution power of the charging pile with the charging starting sequence number of 1 as the residual power to be distributed, and then determines the actual distribution power of the charging pile from the residual power to be distributed, for example, the charging pile with the charging starting sequence number of 2 compares the charging request power of the charging pile with the residual power to be distributed, if the charging request power is smaller than or equal to the residual power to be distributed, the residual power to be distributed can meet the power request of the charging pile with the charging starting sequence number of 2, the charging pile with the charging starting sequence number of 2 confirms that the actual distribution power of the charging pile is the charging request power of the charging pile, and then sends the actual distribution power out; otherwise, if the charging request power is larger than the remaining power to be distributed, it is proved that the remaining power to be distributed cannot meet the power request of the charging pile with the charging starting serial number of 2, at this moment, the charging pile with the charging starting serial number of 2 confirms the actual distributed power of the charging pile to be the remaining power to be distributed, and then the actual distributed power is sent out. And if the remaining power to be allocated is 0, the confirmed actual allocated power is 0. And circulating the steps until all the charging piles determine the actual distribution power of the charging piles.

In one embodiment, the power control method further comprises: and if the actual distribution power is zero, adjusting the charging pile where the charging pile is located to be in a non-charging state. Specifically, if the actual distribution power is zero, it is proved that the charging pile cannot be charged, and at this time, the control unit controls the charging pile in which the control unit is located to be in a non-chargeable state so as to prompt the user that charging cannot be completed.

Similarly, in any allocation strategy, after the total power limit is allocated, all charging piles without charging demand can adjust their states to the non-chargeable state.

Under the strategy of distribution according to priority, the actual distribution power is determined according to the charging starting sequence number, and the charging requirement of the high-priority charging pile can be met preferentially according to the principle of first-come first-obtained. Under the strategy of distributing according to the priority, if the actual distribution power is zero, the charging pile where the charging pile is located is adjusted to be in a non-charging state, and a user can be effectively guided to select charging. If the user can inquire whether each charging pile is available through the cloud or the mobile phone APP, and therefore a reasonable charging decision is made.

Of course, under the strategy of assigning according to priority, other priorities can be customized by those skilled in the art, so that the application can be applied to more specific application scenarios. For example, power distribution may be performed according to a predetermined priority sequence number of each charging pile, and then, on the premise that the charging pile and the battery compartment exist at the same time, the priority of the charging pile may be set higher than that of the battery compartment or the priority of the battery compartment may be set higher than that of the charging pile.

In one possible implementation, the power control method further includes: acquiring real-time total power of a charging and replacing power station; comparing the real-time total power with the total power limit value; when the real-time total power is larger than the total power limit value, the charging power of the charging pile where the charging pile is located is selectively controlled to be reduced, so that the total power of the charging and replacing power station is reduced to the total power limit value.

Specifically, on the premise that the measurement and control ammeter is arranged in the charging and replacing station, the real-time total power of the charging and replacing station is obtained through the measurement and control ammeter, and the charging pile in communication connection with the measurement and control ammeter sends real-time total power data to the outside. After each charging pile obtains the real-time total power data, each charging pile compares the real-time total power with a power limit value, if the real-time total power is larger than the power limit value, the fact that the total power of the current charging and replacing station exceeds the power limit value is proved, the over-limit brake drop and equipment failure are easily caused, and at the moment, the charging power of part of the charging piles needs to be controlled to be reduced, so that the total power of the charging and replacing station is reduced to the total power limit value.

Several different ways of controlling the charging pile to reduce the charging power are introduced below, and those skilled in the art can select which way to reduce the charging power based on the actual application scenario.

The first method is as follows: calculating the difference between the real-time total power and the total power limit value; calculating the ratio of the difference value to the number of the charging piles with the useful electricity demand as a power reduction value; and controlling the charging power of the charging pile where the charging pile is located to reduce the power reduction value.

For example, each charging pile calculates a difference value between the real-time total power and the total power limit value, then calculates a ratio between the difference value and the number of the charging piles with the electricity demand as a power reduction value, and then the charging piles with the electricity demand respectively control the charging power reduction value of the charging pile in which the charging piles are located. In other words, the difference between the real-time total power and the total power limit is distributed evenly to all charging posts with a useful power requirement.

The second method comprises the following steps: calculating the difference between the real-time total power and the total power limit value; calculating the product of the ratio of the charging request power of the charging pile to the total request power and the difference value as a power reduction value; and controlling the charging power of the charging pile where the charging pile is located to reduce the power reduction value.

For example, each charging pile calculates a difference between the real-time total power and the total power limit value, then calculates a product of a ratio of the charging request power of the charging pile located in the charging pile to the total request power and the difference as a power reduction value, and then the charging piles with charging requirements respectively control the charging power reduction value of the charging pile located in the charging pile. In other words, the difference between the real-time total power and the total power limit is distributed to all charging piles with a useful electrical demand in such a way that the charging request power of the charging piles with a charging demand accounts for the total requested power.

The third method comprises the following steps: judging whether the priority of the charging pile is the lowest or not; if yes, calculating the difference between the real-time total power and the total power limit value; and controlling the charging power of the charging pile where the charging pile is located to reduce the difference value.

For example, each charging pile may determine its own charging start sequence number by referring to the above priority allocation policy, then determine whether its own priority is the lowest based on the charging start sequence number, and if so, calculate a difference between the real-time total power and the total power limit, and reduce the difference on the basis of its own actual operating power. In other words, the difference between the real-time total power and the total power limit is assigned to the charging post that was activated at the latest.

The real-time total power of the charging and replacing power station is calculated through real-time monitoring, and the power distribution of the charging pile is controlled based on the real-time total power and the total power limit value of the charging and replacing power station.

Of course, when the measurement and control electric meter is not set, the control unit of each charging pile can calculate the total real-time power of the charging and replacing power station according to the control unit and the real-time power of the charging pile in the acquired operation information.

In one embodiment, the power control method further comprises: acquiring the communication state of a charging pile in which the charging pile is located; and if the charging pile where the charging pile is located is in a disconnected state, determining that the actually distributed power is the preset power.

For example, in the power distribution process, it is inevitable that the charging pile cannot perform power distribution due to communication faults, and at this time, when the control module detects that the communication of the charging pile where the control module is located is disconnected, the control module can distribute preset power to the charging pile where the control module is located, so that the influence of uncertainty on the overall power distribution strategy is avoided. Of course, after allocating the preset power to itself, the preset power needs to be subtracted from the power limit value when power allocation is performed next time. The preset power may be determined based on the total power limit and the number of charging piles, and if the preset power is a ratio between the total power limit and the number of charging piles.

Through the distribution of charging pile at self place when self communication disconnection predetermine power, the appearance of the circumstances such as tripping operation, device damage that bus power transfinites and leads to when this application has still avoided the charging pile that probably exists is unusual reduces whole station fortune dimension cost.

In one possible implementation, the power control method further includes: and if the total requested power is less than or equal to the total power limit value, calculating the residual available power of the charging and replacing power station, and uploading the residual available power to the cloud.

For example, at least one of the plurality of charging piles can be in communication connection with the cloud server, when the total requested power is smaller than the total power limit value, it is proved that the power of the current charging and replacing station is surplus, the surplus available power can be calculated at the moment, and the surplus available power is uploaded to the cloud end to be used by active services, so that a user is guided to make charging and discharging decisions, and user experience is improved.

One possible control procedure of the present application is described below with reference to fig. 3. Fig. 3 is a logic diagram of a possible embodiment of a power control method of a charging device according to the present application.

As shown in fig. 3, for a single charging post, in one possible embodiment:

and S201, transmitting the operation information of the charging pile where the charging pile is located, and acquiring the operation information of other charging piles, wherein the operation information comprises charging request power Per, real-time total power P, charging starting time and charging starting sequence numbers.

S202, determine whether P > PL is true? If so, executing S203; otherwise, if not, executing S205; where PL is the total power limit.

S203, determine whether the charging pile corresponding to the charging start serial number has the lowest priority? If so, S204 is performed, otherwise, S205 is performed.

S204, calculating P-PL, controlling the corresponding charging pile power to be reduced (P-PL), and then returning to the step S201.

And S205, calculating the total requested power Pr of the charging and replacing power station based on the charging requested power Per of the charging pile corresponding to the charging pile and the charging requested powers of all other charging piles.

S206, judging whether Pr is greater than PL or not? If yes, executing S207; otherwise, if not, S210 is performed.

And S207, calculating the residual power Ps to be distributed based on the sequence of the charging starting serial numbers. Specifically, the sum of the actual distributed powers obtained by all charging piles with the charging starting serial numbers before the charging starting serial numbers corresponding to the charging starting serial numbers is calculated, and then the difference value between the total power limit value PL and the sum of the actual distributed powers is calculated as the remaining power Ps to be distributed.

S208, determine whether Per > Ps is satisfied? If so, executing S209; otherwise, if not, S210 is executed.

S209, determine whether Ps? If so, executing S211; otherwise, if not, S212 is executed.

S210, determine the actual allocated power Pccmd ═ Per.

S211, the actual allocated power Pccmd is determined as Ps.

And S212, adjusting the corresponding charging pile to be in a non-chargeable state.

Although the foregoing embodiments describe the steps in the above sequential order, those skilled in the art can understand that, in order to achieve the effect of the present embodiments, the different steps need not be executed in such an order, and may be executed simultaneously (in parallel) or in an inverted order, and these simple changes are all within the scope of protection of the present application.

It should be noted that, although the above embodiments are described in conjunction with all charging piles (whether there is a charging demand or not) for receiving and sending operation information, the embodiments of the present application are not limited thereto, and those skilled in the art can adjust the above embodiments as long as the purpose of power distribution can be finally achieved. For example, only the charging pile with the charging requirement and other necessary charging piles (such as the charging pile in communication connection with the measurement and control ammeter, the charging pile in communication connection with the cloud end, and the like) can be controlled to be implemented according to the steps of the control method, and the other charging piles without the charging requirement can not perform operation of receiving and sending operation information, so that the purposes of saving energy consumption and improving operation efficiency are achieved.

Referring to fig. 4, a power control system of the charging device of the present application will be briefly described. Fig. 4 is a system diagram of a power control system of the charging device of the present application.

As shown in fig. 4, the power control system 100 of the charging device of the present application includes a transceiver module 110, a calculation module 120, a comparison module 130, a power determination module 140, and a power distribution module 150. The transceiver module 110 is configured to send out operation information of a charging device where the transceiver module is located, and acquire operation information of other charging devices, where the operation information at least includes charging request power; the calculation module 120 is configured to calculate the total requested power of the charging and replacing station based on the operation information of the charging device where the calculation module is located and the operation information of other charging devices; the comparison module 130 is configured to compare the magnitude between the total requested power and the total power limit of the charging station; the power determination module 140 is configured to determine the actual distributed power of the charging device in which it is located based on the comparison result; the power distribution module 150 is configured to distribute power to the charging device in which it is located according to the actual distributed power. In one embodiment, the detailed implementation function can be described in reference to steps S101 to S109.

In one embodiment, the power determination module 140 is further configured to determine the actual allocated power of the charging device in which it is located based on the comparison result by: if the total requested power is larger than the total power limit value, determining actual distribution power according to a preset distribution strategy; the preset allocation strategy is average allocation, allocation according to the proportion of the charging request power of the charging equipment where the preset allocation strategy is located, or allocation according to the priority of the charging equipment where the preset allocation strategy is located. In one embodiment, the specific functions are described in the method steps.

In one embodiment, when the preset allocation policy is an average allocation, the power determination module 140 is further configured to determine the actual allocation power according to the preset allocation policy by: the actual allocated power is determined as a ratio between the total power limit and the number of charging devices required for useful electricity. In one embodiment, the specific functions are described in the method steps.

In one embodiment, the comparison module 130 is further configured to, after determining that the actually allocated power is a ratio between the total power limit and the number of charging devices with useful power demand, compare the charging request power of the charging device where the charging device is located with the actually allocated power; the power determination module 140 is further configured to further determine the actually allocated power as the charging request power when the charging request power is less than or equal to the actually allocated power, and determine the actually allocated power again based on the redundant power information of the other charging devices when the charging request power is greater than the actually allocated power; the transceiver module 110 is further configured to send out the redundant power information when the charging request power is smaller than or equal to the actually allocated power, and obtain the redundant power information of other charging devices when the charging request power is greater than the actually allocated power. In one embodiment, the specific functions are described in the method steps.

In one embodiment, when the preset allocation policy is allocation according to the duty ratio of the charging request power of the charging device, the power determining module 140 is further configured to determine the actual allocation power according to the preset allocation policy by: and determining the actually distributed power as the product of the ratio of the charging request power of the charging equipment where the actually distributed power is located to the total request power and the total power limit value. In one embodiment, the specific functions are described in the method steps.

In one embodiment, when the preset allocation policy is according to the priority of the charging device where the power determination module 140 is located, the power determination module 140 is further configured to determine the actual allocation power according to the preset allocation policy by: sequencing the charging starting time of the charging equipment where the charging equipment is located and the obtained charging starting time; determining a charging starting sequence number of the charging equipment where the charging equipment is located according to the sequencing of the charging starting time; the actual distributed power is determined in the order of the charging start sequence numbers. In one embodiment, the specific functions are described in the method steps.

In one embodiment, the power determination module 140 is further configured to determine the actual allocated power in the order of the charge initiation sequence number by: acquiring actual distributed power obtained by all charging equipment with the charging starting serial numbers positioned before the charging starting serial numbers corresponding to the charging equipment; calculating the remaining power to be distributed based on the actual distributed power and the total power limit value obtained by all the charging devices; comparing the charging request power of the charging equipment where the charging equipment is located with the residual power to be distributed; if the charging request power is less than or equal to the residual power to be distributed, determining the actual distributed power as the charging request power; and if the charging request power is larger than the residual power to be distributed, determining the actual distributed power as the residual power to be distributed. In one embodiment, the specific functions are described in the method steps.

In one embodiment, the power control system 100 further comprises: a state adjusting module 160, wherein the state adjusting module 160 is configured to adjust the charging device in which the charging device is located to be in the non-chargeable state when the actually allocated power is zero. In one embodiment, the specific functions are described in the method steps.

In one embodiment, the power determination module 140 is further configured to determine the actual allocated power of the charging device in which it is located based on the comparison result by: and if the total requested power is smaller than or equal to the total power limit value, determining that the actually distributed power is the charging requested power of the charging equipment where the actually distributed power is located. In one embodiment, the specific functions are described in the method steps.

In one embodiment, the transceiver module 110 is further configured to obtain the real-time total power of the charging and swapping station; the comparison module 130 is further configured to compare the real-time total power with the total power limit; the power distribution module 150 is further configured to selectively control the charging power of the charging device where it is located to be reduced when the real-time total power is greater than the total power limit, so that the total power of the charging station is reduced to the total power limit. In one embodiment, the specific functions are described in the method steps.

In one embodiment, when the preset allocation policy is an average allocation, the power allocation module 150 is further configured to selectively control the charging power of the charging device in which it is located to be reduced by: calculating the difference between the real-time total power and the total power limit value; calculating a ratio between the difference and the number of charging devices required for useful electricity as a power reduction value; and controlling the charging power of the charging equipment where the charging equipment is located to reduce the power reduction value. In one embodiment, the specific functions are described in the method steps.

In one embodiment, when the preset allocation policy is to be allocated according to a proportion of the charging request power of the charging device where the power allocation module 150 is located, the power allocation module is further configured to selectively control the charging power of the charging device where the power allocation module is located to decrease by: calculating the difference between the real-time total power and the total power limit value; calculating the product of the ratio of the charging request power of the charging equipment where the charging equipment is located to the total request power and the difference value as a power reduction value; and controlling the charging power of the charging equipment where the charging equipment is located to reduce the power reduction value. In one embodiment, the specific functions are described in the method steps.

In one embodiment, when the preset allocation policy is according to the priority of the charging device, the power allocation module 150 is further configured to selectively control the charging power of the charging device to be decreased by: judging whether the priority of the charging equipment where the charging equipment is located is the lowest; if yes, calculating the difference between the real-time total power and the total power limit value; and controlling the charging power of the charging equipment where the charging equipment is located to reduce the difference. In one embodiment, the specific functions are described in the method steps.

In one embodiment, the transceiver module 110 is further configured to obtain a communication status of the charging device in which the transceiver module is located; the power determination module 140 is further configured to determine the actually allocated power as the preset power when the charging device in which the power determination module is located is in the off state. In one embodiment, the specific functions are described in the method steps.

It should be noted that, the power control system 100 provided in the foregoing embodiment is illustrated by only dividing the functional modules (such as the transceiver module 110, the calculation module 120, the comparison module 130, the power determination module 140, the power allocation module 150, and the state adjustment module 160, etc.), and in practical applications, the functional modules may be completed by different functional units according to needs, that is, the functional modules in this embodiment are further decomposed or combined, for example, the functional modules in the foregoing embodiment may be combined into one functional module, or may be further split into multiple sub-modules, so as to complete all or part of the functions described above. The names of the functional modules referred to in the present embodiment are for distinction only and are not to be construed as an improper limitation of the present application.

It will be understood by those skilled in the art that all or part of the flow of the method according to the above-described embodiments may be implemented by a computer program, which may be stored in a computer-readable storage medium and used to implement the steps of the above-described embodiments of the method when executed by a processor. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable storage medium may include: any entity or device capable of carrying computer program code, media, U-disk, removable hard disk, magnetic disk, optical disk, computer memory, read-only memory, random access memory, electrical carrier wave signals, telecommunications signals, software distribution media, and the like. It should be noted that the computer readable storage medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable storage media that does not include electrical carrier signals and telecommunications signals in accordance with legislation and patent practice.

The various component embodiments of the invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that a microprocessor or Digital Signal Processor (DSP) may be used in practice to implement some or all of the functions of some or all of the components in a server, client, or the like, according to embodiments of the present invention. The present invention may also be embodied as an apparatus or device program (e.g., PC program and PC program product) for carrying out a portion or all of the methods described herein. Such a program implementing the invention may be stored on a PC readable medium or may be in the form of one or more signals. Such a signal may be downloaded from an internet website or provided on a carrier signal or in any other form.

The present application also provides a computer-readable storage medium. In one computer-readable storage medium embodiment according to the present application, a computer-readable storage medium may be configured to store a program that executes the power control method of the charging device of the above-described method embodiment, and the program may be loaded and executed by a processor to implement the power control method of the above-described charging device. For convenience of explanation, only the parts related to the embodiments of the present invention are shown, and details of the specific techniques are not disclosed. The computer readable storage medium may be a storage device formed by including various electronic devices, and optionally, the computer readable storage medium is a non-transitory computer readable storage medium in the embodiment of the present invention.

The application also provides a control device. In one control apparatus embodiment according to the present application, the control apparatus includes a processor and a memory, the memory may be configured to store a program for executing the power control method of the charging device of the above-described method embodiment, and the processor may be configured to execute the program in the memory, the program including but not limited to the program for executing the power control method of the charging device of the above-described method embodiment. For convenience of explanation, only the parts related to the embodiments of the present invention are shown, and details of the specific techniques are not disclosed. The control device may be a device apparatus formed including various electronic apparatuses.

The application also provides a charging and replacing station, which comprises a plurality of charging devices, each charging device is provided with a charging unit and the control device of the embodiment, and the control devices of the charging devices are in communication connection.

So far, the technical solutions of the present application have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present application is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the present application, and the technical scheme after the changes or substitutions will fall into the protection scope of the present application.

Claims

1. A power control method of a charging device is applied to a charging and replacing station, and is characterized in that the charging and replacing station comprises a plurality of charging devices, each charging device is provided with a charging unit and a control unit, the control units of the plurality of charging devices are in communication connection,

the power control method comprises the following steps:

wherein the operation information at least includes a charging request power.

2. The power control method of the charging device according to claim 1, wherein the step of determining the actually allocated power of the charging device in which the charging device is located based on the comparison result further comprises:

the preset allocation strategy is average allocation, allocation according to the ratio of the charging request power of the charging equipment where the preset allocation strategy is located, or allocation according to the priority of the charging equipment where the preset allocation strategy is located.

3. The power control method of the charging device according to claim 2, wherein when the preset allocation policy is the average allocation, "determining the actual allocation power according to a preset allocation policy" further comprises:

4. The power control method of charging equipment of claim 3, wherein after the step of determining that the actual allocated power is a ratio between the total power limit and the number of charging equipment with useful power demand, the power control method further comprises:

5. The method according to claim 2, wherein, when the preset allocation policy is the duty allocation of the charging request power according to the charging device in which the charging device is located, the step of determining the actual allocation power according to the preset allocation policy further includes:

6. The power control method of the charging device according to claim 2, wherein the operation information further includes a charging start time and a charging start sequence number, and when the preset allocation policy is the priority of the charging device in which the operation information is stored, the step of determining the actual allocation power according to the preset allocation policy further includes:

wherein, the charging start sequence number is determined as follows:

7. The power control method of a charging apparatus according to claim 6, wherein the step of "determining the actually allocated power in order of a charging start sequence number" further comprises:

8. The power control method of the charging device according to claim 7, characterized in that the power control method further comprises:

9. The power control method of the charging device according to claim 1, wherein the step of determining the actually allocated power of the charging device in which the charging device is located based on the comparison result further comprises:

10. The power control method of the charging device according to claim 2, characterized in that the power control method further comprises:

comparing the real-time total power with the total power limit value;