An orderly charging method, device and system for an electric vehicle

Abstract

The application discloses an orderly charging method, device and system of an electric vehicle, which forms charging queue data and power distribution data, estimates the total power of all charging guns in each period arranged in time sequence according to the two data, and when the estimated value of the total power of the charging guns is reduced enough for a charging gun to start, it is indicated that a charging electric vehicle can be predicted at this time, but the actual total power of all charging guns still needs to be determined, so the actual power of each charging gun in the period is collected, and whether the electric vehicle in the queuing state and with the highest priority is charged or kept in the queuing state is determined according to the actual power; through the scheme, the collection frequency of the actual power of the charging gun can be reduced, the collection and control costs can be reduced, and the control efficiency can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of charging control, in particular to an orderly charging method, device and system of an electric vehicle. BACKGROUND

[0002] With the increasing popularity of new energy electric vehicles, charging stations for electric vehicles have also been well developed. A charging station refers to a facility with clustered charging piles that can provide simultaneous charging for multiple vehicles. It generally accesses the power grid through a dedicated distribution box, which can supply power to each charging pile in the station. Generally, each charging pile has at least one charging gun. After the user inserts the charging gun into the electric vehicle charging port, the charging pile receives the corresponding user instructions and controls the charging gun to start charging the electric vehicle. In order to avoid the charging power of the charging pile exceeding the limit power of the distribution box, an orderly charging strategy is generally used to control charging. The orderly strategy can be understood as follows: after the charging gun is inserted into the electric vehicle charging port, the charging gun does not directly start charging, but according to the real-time collected charging power of each charging gun, it is determined whether the new charging gun will exceed the limit power of the distribution box when it starts charging. If it exceeds the limit power of the distribution box, the electric vehicle enters a queuing state, and when the charging gun is started without exceeding the limit power of the distribution box, the electric vehicle enters a charging state.

[0003] It can be understood that in the control strategy of orderly charging, the collection of the charging power of each charging gun is the basis for decision-making whether to start charging a certain charging gun. In order to reduce the waiting time of vehicles in the queuing state, the time interval of the collection is short, which increases the collection cost and reduces the system efficiency. SUMMARY

[0004] The purpose of the present application is to overcome the above-mentioned defects or problems existing in the background art, and to provide an orderly charging method, device and system of an electric vehicle, which can solve or improve the problem of high collection cost and low system efficiency of the existing orderly charging control strategy in the background art.

[0005] In order to achieve the above-mentioned purpose, the following technical solutions are adopted:

[0006] The first technical solution relates to an orderly charging method of an electric vehicle, comprising the following steps: forming charging queue data according to the pairing order in time of each charging gun and the electric vehicle; after each charging gun starts charging, estimating the charging duration according to the initial battery state of charge of the paired electric vehicle, and forming power allocation data in a specific time order according to a preset charging power allocation strategy; in each period divided according to the specific division, calculating the estimated total power of all charging guns in the period according to the charging queue data and the power allocation data; when the decrease value of the estimated total power of each period and the adjacent previous period is greater than the minimum starting power of the charging gun, collecting the actual power of each charging gun in the period to obtain the actual total power of all charging guns, and determining to charge or keep the electric vehicle in the queue state with the highest priority according to the actual total power.

[0007] The second technical solution is based on the first technical solution, wherein when the actual total power of all charging guns is less than the limit total power and the difference between them is greater than a preset threshold, the electric vehicle in the queue state with the highest priority is charged.

[0008] The third technical solution is based on the first technical solution, wherein in any of the periods, the power of the charging gun that stops charging in the period after the period is zero.

[0009] The fourth technical solution is based on the first technical solution, wherein when calculating the estimated total power of all charging guns in the period according to the charging queue data and the power allocation data, if there is a charging gun that only forms a pairing relationship with the electric vehicle but has not started charging, the power of the charging gun is zero.

[0010] The fifth technical solution is based on the fourth technical solution, wherein in a plurality of periods after the charging gun starts charging for a preset duration, the actual power of the charging gun collected in the periods is recorded as full load power.

[0011] The sixth technical solution is based on the first technical solution, wherein the actual power collected in [0, x] minutes after the charging gun starts charging is recorded as full load power, wherein x is 3-6.

[0012] The seventh technical solution is based on the first technical solution, wherein the waiting duration of the electric vehicle before charging is calculated according to the charging queue data and the power allocation data, and the charging duration of the electric vehicle is estimated after the charging gun corresponding to the electric vehicle starts charging.

[0013] The eighth technical solution is based on the seventh technical solution, wherein, after the charging gun starts charging, the battery state of charge of the corresponding electric vehicle is estimated according to the charging gun current increasing rate in a plurality of time periods lasting for a preset time length, and the corresponding charging time is estimated according to the battery state of charge.

[0014] The ninth technical solution relates to an orderly charging device for electric vehicles, which comprises: a charging queue operation module for forming charging queue data according to the time pairing order of each charging gun and electric vehicle; a charging information estimation module for estimating the charging time of each charging gun after it starts charging according to the initial battery state of charge of the paired electric vehicle; a power distribution operation module for forming power distribution data in a specific time order according to the battery state of charge and charging time obtained by the charging information estimation module based on a preset charging power distribution strategy; a charging power operation module for calculating the estimated total power of all charging guns in each period divided according to the specific division and the reduction value of the estimated total power of each period and the adjacent previous period according to the charging queue data and power distribution data; a charging power collection module for collecting the actual power of each charging gun in the period when the reduction value is greater than the minimum starting power of the charging gun; and a charging control module for calculating the actual total power of all charging guns and determining whether to charge or keep the electric vehicle in the queue state with the highest priority.

[0015] The tenth technical solution relates to an orderly charging system for electric vehicles, which comprises a memory, a processor, and an orderly charging program stored in the memory and executable on the processor, wherein the orderly charging program is executed by the processor to implement the orderly charging method for electric vehicles according to any one of the first to seventh technical solutions.

[0016] Compared with the prior art, the above-mentioned solutions have the following beneficial effects:

[0017] In the present application, charging queue data and power distribution data are formed, and the total power of all charging guns in each period arranged in time order is estimated according to the two data. When the reduction value of the total power of the charging guns is sufficient to start one charging gun, it is indicated that one electric vehicle can be charged at this time, but the actual total power of all charging guns still needs to be determined. Therefore, the actual power of each charging gun in the period is collected, and then it is determined whether to charge or keep the electric vehicle in the queue state with the highest priority. Through the above-mentioned solution, the collection frequency of the actual power of the charging gun can be reduced, the collection and control costs can be reduced, and the control efficiency can be improved.

[0018] It should be explained that in a charging station, the charging power of each charging gun does not remain a constant value for a long time, but is adjusted by the vehicle charging information, for example, in the middle stage of charging, the charging power remains at a high level to ensure that the vehicle battery can be quickly charged, and in the end stage of charging, the charging power slowly decreases to ensure that the vehicle battery is fully charged, so there is a corresponding change in the charging power during the charging process, and this change is related to the charging gun preset charging power distribution strategy and the battery state of charge and charging time of the electric vehicle; usually, due to the change of charging power, in the process of realizing the orderly charging control strategy, it is necessary to collect the power of the charging gun in real time, when the charging gun power decreases, it can be detected in time; then according to the difference between the total charging power and the limited total power, it is judged whether to start the first charger in the queue or a plurality of chargers in sequence, if the difference is greater than the minimum starting power of the charging gun, it is determined that at least one charging vehicle can be charged. But as mentioned above, this control method needs to collect the power of all charging guns in real time or at a short interval, if the interval is too long, there will be enough charging power to supply the charging of the queued vehicles, but it cannot be started due to not being detected, and if the power is collected in real time or at a short interval, the cost of collection will be too high, and the device is easy to be damaged;

[0019] Therefore, by starting the SOC (battery state of charge) of the electric vehicle after charging and the estimated charging time and the preset charging power distribution strategy, the power distribution data arranged in a specific scale time sequence can be obtained, for example, sorted by minute scale, listing the charging power of each charging gun per minute. The power distribution data has a certain deviation from the actual situation, but can generally reflect the charging power at each time, so the power distribution data and the charging queue data can be combined, and it is judged whether there is a time corresponding to the charging total power in the period and the reduction value of the charging total power of the adjacent previous period is sufficient to start another charging gun. After such prediction and judgment, the actual power of each charging gun in the current period is collected to determine whether another charging gun can be started. By this method, the collection of the actual power of the charging gun is only carried out when the charging total power reduction value meets certain conditions, thereby limiting the collection frequency of the actual power of the charging gun.

[0020] When the actual total power of all charging guns is less than the limited total power and the difference between them is greater than a preset threshold, the electric vehicle with the highest priority in the queue can be charged. The preset threshold is used as the judgment basis because the actual total power is preferably greater than the limited total power to ensure safety and provide a certain redundancy. Therefore, the threshold is normally greater than the minimum starting power of the charging gun. When the above difference is greater than the preset threshold, it indicates that the charging station has enough charging power to start a charging gun at the current time. Therefore, the electric vehicle with the highest priority in the queue can be charged. Of course, multiple thresholds with different values can be set to determine how many charging guns to start.

[0021] During the charging process using the charging gun, the charging gun stops charging the vehicle battery when the battery is full or manually stopped. However, the charging gun may not have been unpaired with the vehicle at this time. Therefore, the power of the charging gun in the subsequent period is recorded as zero to ensure that the charging power of the charging station is not occupied by the charging gun.

[0022] When electric vehicles are queued for charging, an idle charging gun can be inserted into an electric vehicle. However, the actual total power of the charging station does not meet the requirement to start a new charging gun at this time. Therefore, the inserted charging gun cannot start charging the vehicle immediately. At this time, the vehicle can be considered to be in a queue state. When the vehicle is in a queue state, the corresponding charging gun has not started working. Therefore, the power of the charging gun is recorded as zero to ensure that the charging power of the charging station is not occupied by the charging gun.

[0023] In actual use, there is also a situation where one or more charging guns are started when collecting the actual power of each charging gun. After the charging gun is started, the power of the charging gun increases slowly. Therefore, if the actual power is collected at this time and it is determined that the total charging power meets the requirement, and the charging gun is started based on this, it will lead to exceeding the limited total power or the difference between the limited total power being less than the set threshold during the use of the charging gun. Therefore, during the period after the start of each charging gun for a preset time, the actual power collected in the period is recorded as the full-load power. That is, whether the charging gun is charging at full load during the process, the collected actual power is recorded as the full-load power of the charging gun to avoid misjudgment of the charging power of the charging gun due to slow start of the charging gun. In an embodiment, the actual power collected within 0 to x (x can be any value in 3-6) minutes after the start of the charging gun can be recorded as the full-load power to avoid misjudgment of the charging power of the charging gun due to slow start of the charging gun, and to avoid long occupation of the total charging power, which makes the orderly charging method unable to run efficiently.

[0024] When the electric vehicle is in the state of having inserted the charging gun but not started charging, the charging gun is in the queuing state, at this time, the waiting time of the electric vehicle before charging can be calculated according to the charging queue data and the power allocation data in the charging state, at this time, the waiting time does not include the charging time, only the user can be informed in advance how long to wait before starting charging, and after the charging gun of the electric vehicle starts, the charging time of the electric vehicle can be obtained according to the pairing information, so that the user has a clear understanding of the charging time of the vehicle.

[0025] The charging time of the electric vehicle can be estimated by the current increase rate after the charging gun starts. Specifically, after the charging gun starts, the SOC of the vehicle battery can be estimated by the current increase rate, and then the corresponding charging time can be calculated according to the SOC and the charging power allocation strategy of the charging gun. For example, if the SOC is low, the time for the charging gun to maintain the full power state can be increased, and the charging time will have a greater impact on the charging power allocation of the charging gun. After the charging time is determined, the charging power of each period is allocated according to the charging power allocation strategy with time as the axis, and the power allocation data of each charging gun is sorted in time sequence, and then the power allocation data is combined with the charging queuing data, and the estimated total power of all charging guns in each period can be obtained. Alternatively, for vehicles and charging piles with corresponding communication capabilities, the SOC of the vehicle battery can also be obtained directly through communication between the charging gun and the control module of the vehicle battery.

[0026] The application also provides an orderly charging device for electric vehicles, which can realize the above-mentioned orderly charging method through the built-in modules. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments, the following briefly introduces the drawings needed to be used:

[0028] Figure 1 The flowchart of an embodiment of an orderly charging method for electric vehicles provided by the application;

[0029] Figure 2 The module schematic diagram of an embodiment of an orderly charging device for electric vehicles provided by the application. DETAILED DESCRIPTION

[0030] In the claims and the specification, unless otherwise defined, the terms "comprise", "comprising", and variations thereof, mean "including but not limited to".

[0031] Embodiment 1

[0032] The technical solutions in the embodiment 1 will be described clearly and completely in combination with the drawings.

[0033] Reference Figure 1 The embodiment provides an orderly charging method of an electric vehicle, which is applied to a charging device of a charging station of the electric vehicle. The charging device can be a charging pile, and a charging gun is arranged on the charging pile and used for being connected with a charging port of the electric vehicle and charging a battery of the electric vehicle.

[0034] Generally, a plurality of charging piles are included in the charging station, the charging piles are connected to a distribution box, and the charging power of the charging gun on the charging pile is controlled by a control system. The distribution box correspondingly has a limit total power, the limit total power can limit the actual charging power of the charging gun through the control system, so as to avoid that the total charging power of the charging piles exceeds the limit total power. In actual application, in order to control the charging of the electric vehicle, an orderly charging control strategy is usually adopted. The orderly charging means that according to a certain order and the limit total power preset by the charging station, some vehicles in the front of the order are charged first, and other vehicles are queued, and after the charging of the vehicles is completed, the other vehicles are sequentially charged according to the queuing order of the other vehicles.

[0035] Generally, in a charging station, the charging power of each charging gun does not remain a fixed value for a long time, but is adjusted according to the charging information of the vehicle, for example, in the middle stage of charging, the charging power is maintained at a high level to ensure that the vehicle battery can be quickly charged, and in the end stage of charging, the charging power is slowly reduced to ensure that the vehicle battery can be fully charged. Therefore, the charging power changes correspondingly in the charging process, and the change is related to the charging power distribution strategy preset by the charging gun and the state of charge and the charging time of the battery of the electric vehicle. Generally, due to the change of the charging power, in the process of realizing the orderly charging control strategy, the power of the charging gun needs to be collected in real time. When the power of the charging gun decreases, it can be detected in time. Then, whether the first charger in the queuing queue or a plurality of chargers in sequence is started is judged according to the difference between the charging total power and the limit total power. If the difference is greater than the minimum starting power of the charging gun, it is determined that at least one vehicle in the queue can be charged. However, as described above, this control method needs to collect the power of all charging guns in real time or at a short interval. If the interval is too long, there is enough charging power to supply the queued vehicles for charging, but the charging gun cannot be started because it has not been detected. If the power is collected in real time or at a short interval, the cost of collection is too high, and the device is easy to be damaged.

[0036] To solve the problem, the embodiment provides an orderly charging method, which includes the following steps:

[0037] Step one, form charging queue data according to the pairing order of each charging gun and electric vehicle in time;

[0038] Step two, after starting charging at each charging gun, estimate the charging duration according to the initial battery state of charge of the paired electric vehicle, and form power allocation data in a specific time sequence order according to the preset charging power allocation strategy for the charging gun;

[0039] Step three, in each period divided according to the specific division, calculate the estimated total power of all charging guns in the period according to the charging queue data and power allocation data;

[0040] Step four, when the decrease value of the estimated total power of each period and the adjacent previous period is greater than the minimum starting power of the charging gun, collect the actual power of each charging gun in the period to obtain the actual total power of all charging guns, and determine whether to charge or keep the electric vehicle in the highest priority queue state.

[0041] The following describes each step in detail.

[0042] In step one, after entering the charging station, the idle charging gun is inserted into the vehicle charging port, at which time the charging gun and the electric vehicle form a pairing relationship. According to the time when the pairing relationship is formed, the charging queue data can be generated in the control system of the charging station. The charging queue data can be in the form of a list, and the attribute value of the list is the serial number of the charging gun, and the arrangement is in time sequence. As shown in the following table:

[0043] 1# charging gun 2# charging gun 3# charging gun …… n-1# charging gun n# charging gun

[0044] Among them, the state of each charging gun is different. For example, when the charging station is relatively idle, the available charging power of the charging station is sufficient at this time. If a new vehicle enters the charging, the idle charging gun can be started directly, and the vehicles are in the charging state. If the charging station is already full, but there is an idle charging gun, at this time a new vehicle enters the charging station and inserts the idle charging gun into the vehicle charging port. Since the charging station cannot provide additional available charging power, the charging gun will not start charging at this time, and the vehicles will be in the queue state. The vehicles in the queue state will also be included in the charging queue data in the pairing order. After the charging station vacates additional available charging power, the electric vehicle in the highest priority queue state will enter the charging state. If the available charging power is sufficient for multiple vehicles to charge, multiple vehicles will be charged in sequence.

[0045] In step two, after each charging gun starts charging, the initial battery state of charge (SOC) and charging duration of the electric vehicle can be estimated according to the pairing information of the charging gun and the electric vehicle, and the power allocation data in a specific scale time sequence can be formed for the charging gun according to a preset charging power allocation strategy. The power allocation data can be in the form of a list, which corresponds to the settings of each charging gun and includes the power value in each period in time sequence, as shown in the following table:

[0046] 4:01 4:02 …… 4:20 …… 4:50 1 kW 3 kW 7 kW 0 kW

[0047] In this embodiment, the length of each period is 1 min, which can be set according to actual needs, and here is only an example of practical application. For each period, a charging power is set, and the actual charging power of the charging gun can be adjusted according to the charging power in the power allocation data.

[0048] The power allocation data is formed according to the preset charging power allocation strategy. After the SOC of the charging vehicle is determined, the charging duration of the charging vehicle can be estimated according to the charging power allocation strategy. For example, if the SOC is low, the time length of maintaining full power state of the charging gun can be increased, or the overall charging duration of the charging vehicle can be extended while maintaining a low charging power, depending on the charging power allocation strategy adopted. The charging power allocation strategy can be set artificially in advance, and the specific allocation content is not described here.

[0049] After the charging gun starts charging, the charging duration of the corresponding electric vehicle is estimated according to the current increase rate of the charging gun in a plurality of periods lasting for a preset time length. Specifically, the SOC of the battery can be estimated by the current increase rate after the charging gun starts charging, and then the SOC and the content preset by the charging power allocation strategy are used to determine how much time is needed to charge the battery. For example, the initial SOC of the battery can be calculated by an empirical formula according to the current increase rate of the charging gun within 1 min after the charging gun starts charging. Of course, in other embodiments, the initial SOC of the electric vehicle battery can also be obtained by establishing communication between the charging gun and the battery control module.

[0050] In step three, in each period divided according to the specific scale, the estimated total power of all charging guns in the period is calculated according to the charging queue data and the power allocation data. It can be considered that the above two tables are combined to form the following table:

[0051]

[0052] Here, for the convenience of illustration, the table is recorded as a charging power allocation table. According to the table, the total charging power of the charging guns that have formed pairing relationship with the electric vehicles in each period can be calculated. The total charging power is an estimated value obtained according to the table, and thus is an estimated total power.

[0053] In any period, the power of the charging gun that will stop charging in the subsequent period is recorded as zero. In use, the charging gun will stop charging the vehicle battery when the battery is full or manually stopped, but at this time the charging gun may not have been paired with the vehicle, and thus the power of the charging gun in the subsequent period needs to be recorded as zero to ensure that the charging power of the charging station can be confirmed.

[0054] In addition, when calculating the estimated total power of all charging guns in the period according to the charging queue data and the power allocation data, if there is a charging gun that only forms a pairing relationship with the electric vehicle but has not started charging, the power of the charging gun is recorded as zero. When the vehicle is in the queue state, the corresponding charging gun has entered the charging queue data, but since it has not started charging, the charging gun does not have corresponding power allocation data. When the charging queue data and the power allocation data are combined, the charging guns will occupy the corresponding positions in the charging power allocation table, and thus the power of the charging guns in the charging power allocation table can be recorded as zero to ensure that the charging power of the charging station can be confirmed.

[0055] It should be noted that in the charging power allocation table, the estimated total power in any period is less than the limit total power of the charging station, so that when the charging guns adjust the power according to the charging power allocation table, it will not affect the power distribution of the charging station.

[0056] In step four, the reduction value of the estimated total power is calculated, and the reduction value is compared with the minimum power of the charging gun. If the reduction value is greater than the minimum starting power of the charging gun, the actual power of each charging gun in the period is collected to obtain the actual total power of all charging guns, and then it is determined whether to charge or keep the electric vehicle in the queue state with the highest priority.

[0057] The reduction value of the estimated total power refers to the difference between the estimated total power in two adjacent periods, and is the difference between the estimated total power in the current period and the previous period. If the estimated total power in the current period is greater than the estimated total power in the previous period, it is obviously impossible to free up additional available charging power for starting a new charging gun. Therefore, only the reduction value has meaning.

[0058] If the difference between the actual total power and the limit total power is greater than a preset threshold, the electric vehicle with the highest priority in the queue is charged. If the difference is less than the preset threshold, the electric vehicle remains in the queue. The preset threshold is greater than the minimum starting power of the charging gun, and when the difference is greater than the preset threshold, it means that the charging station has enough power to start a charging gun, so the electric vehicle with the highest priority in the queue can be charged. Of course, multiple thresholds with different values can be set to determine how many charging guns to start.

[0059] According to steps 1-4, the collection of the actual power of the charging gun is only performed when the decrease of the total charging power meets certain conditions, thereby limiting the frequency of collection of the actual power of the charging gun, reducing the cost of collection and control, and improving the control efficiency.

[0060] In addition, the actual power of the charging gun collected during a period of time after the charging gun starts charging for a preset time is recorded as the full-load power. In actual use, there is a situation that one or more charging guns are started when the actual power of each charging gun is collected. The power of the charging gun increases slowly after the charging gun is started. Therefore, if the actual power is collected at this time and it is determined that the total charging power meets the requirements, and the charging gun is started based on this, it will lead to exceeding the limit total power or the difference between the limit total power and the actual power being less than the set threshold during the use of the charging gun. Therefore, during a period of time after each charging gun is started for a preset time, the actual power collected during the period is recorded as the full-load power, that is, whether the charging gun is charging at full load during the process or not, the collected actual power is recorded as the full-load power of the charging gun, thereby avoiding the misjudgment of the charging power of the charging gun due to the slow start of the charging gun. In this embodiment, the actual power collected within 3-6 minutes after the charging gun starts charging is recorded as the full-load power, to avoid the misjudgment of the charging power of the charging gun due to the slow start of the charging gun, and to avoid long-time occupation of the total charging power, which makes the orderly charging method unable to run efficiently.

[0061] In addition, the waiting time of the electric vehicle before charging can be calculated according to the charging queue data and the power distribution data, and the charging time of the electric vehicle can be estimated after the charging gun corresponding to the electric vehicle is started. When the electric vehicle is already inserted into the charging gun but has not started charging, the charging gun is in a queuing state. At this time, the waiting time of the electric vehicle before charging can be calculated according to the charging queue data and the power distribution data in the charging state, and the waiting time does not include the charging time at this time, so that the user can only be informed in advance how long to wait before charging can start. After the charging gun of the electric vehicle is started, the SOC of the corresponding electric vehicle can be estimated according to the current increasing rate of the charging gun within a certain time period, and then the charging time of the electric vehicle can be estimated according to the SOC, so that the user has a clear understanding of the charging time of the vehicle.

[0062] Embodiment 2

[0063] With reference to Figure 2 The embodiment provides an orderly charging device for electric vehicles, which comprises a charging queue operation module, a charging information estimation module, a power distribution operation module, a charging power operation module, a charging power acquisition module and a charging control module.

[0064] The charging queue operation module is configured to form charging queue data according to the pairing order of each charging gun and electric vehicle in time; the charging information estimation module is configured to estimate the battery state of charge and the charging time of the electric vehicle through the pairing information of the charging gun and the electric vehicle; the power distribution operation module is configured to form power distribution data in a time sequence of a specific scale according to a preset charging power distribution strategy based on the battery state of charge and the charging time obtained by the charging information estimation module; the charging power operation module is configured to calculate the estimated total power of all charging guns in each period according to the charging queue data and the power distribution data, and calculate the reduction value of the estimated total power of each period and the adjacent previous period in each period divided according to a specific scale; the charging power acquisition module is configured to acquire the actual power of each charging gun in the period when the reduction value is greater than the minimum starting power of the charging gun; and the charging control module is configured to calculate the actual total power of all charging guns and determine whether to charge the electric vehicle in the queuing state with the highest priority or keep the electric vehicle in the queuing state.

[0065] The specific implementation of the orderly charging device can refer to the content in Embodiment 1 described above, and will not be described in detail here.

[0066] Embodiment 3

[0067] The embodiment of the present application provides an orderly charging system of an electric vehicle, which comprises a memory, a processor and an orderly charging program stored in the memory and executable on the processor, and the orderly charging program is executed by the processor to realize the orderly charging method of the electric vehicle provided in the embodiment 1 of the present application.

[0068] The above description and the embodiment are used for explaining the protection scope of the present application, but do not constitute the limitation to the protection scope of the present application.

Claims

1. An orderly charging method of an electric vehicle, characterized by, The method comprises the following steps: forming charging queue data according to the pairing order of each charging gun and electric vehicle in time; estimating the charging duration according to the initial battery state of charge of the paired electric vehicle after each charging gun starts charging, and forming power allocation data in a specific time sequence order for the charging gun according to a preset charging power allocation strategy; calculating the estimated total power of all charging guns in each period divided according to the specific scale according to the charging queue data and the power allocation data; when the reduction value of the estimated total power of each period and the adjacent previous period is greater than the minimum starting power of the charging gun, collecting the actual power of each charging gun in the period to obtain the actual total power of all charging guns, and determining to charge or keep the electric vehicle with the highest priority in the queuing state.

2. The method of claim 1, wherein the step of determining the order of charging is performed by a server. When the actual total power of all charging guns is less than the limit total power and the difference between them is greater than the preset threshold, the electric vehicle with the highest priority in the queuing state is charged.

3. The method of claim 1, wherein the method further comprises: In any of the periods, the power of the charging gun that stops charging in the period after the period is recorded as zero.

4. The method of claim 1, wherein the method further comprises: When calculating the estimated total power of all charging guns in the period according to the charging queue data and the power allocation data, if there is a charging gun that only forms a pairing relationship with the electric vehicle but has not started charging, the power of the charging gun is recorded as zero.

5. The method of claim 1, wherein the step of determining the order of charging is performed by a server. In a number of periods after the charging gun starts charging for a preset duration, the actual power of the charging gun collected in the periods is recorded as full-load power.

6. The method of claim 5, wherein the method further comprises: The actual power collected within [0, x] minutes after the charging gun starts charging is recorded as full-load power, where x is 3-6.

7. The method of claim 1, wherein the method further comprises: determining a charging order of the plurality of electric vehicles based on the charging request information and the charging status information. The waiting duration of the electric vehicle before charging is calculated according to the charging queue data and the power allocation data, and the charging duration of the electric vehicle is estimated after the corresponding charging gun starts.

8. A method of orderly charging of electric vehicles as claimed in claim 7, characterized in that, in After the charging gun starts charging, the battery state of charge of the corresponding electric vehicle is estimated according to the current increase rate of the charging gun in a number of periods lasting for a preset duration, and the corresponding charging duration is estimated according to the battery state of charge.

9. An orderly charging device for electric vehicles, characterized in that, The method comprises: a charging queuing operation module for forming charging queue data according to the pairing order of each charging gun and electric vehicle in time; a charging information estimation module for estimating the charging duration according to the initial battery state of charge of the paired electric vehicle after each charging gun starts charging; a power allocation operation module for forming power allocation data in a specific time sequence order for the corresponding charging gun based on the battery state of charge and the charging duration obtained by the charging information estimation module according to a preset charging power allocation strategy; a charging power operation module for calculating the estimated total power of all charging guns in each period divided according to the specific scale according to the charging queue data and the power allocation data, and calculating the reduction value of the estimated total power of each period and the adjacent previous period; a charging power collection module for collecting the actual power of each charging gun in the period when the reduction value is greater than the minimum starting power of the charging gun; A charging control module is used to calculate the actual total power of all charging guns and determine whether to charge or keep the electric vehicle in the queuing state with the highest priority according to the actual total power.

10. An orderly charging system for electric vehicles, characterized in that, The application relates to an electric vehicle charging method and a charging device. The application relates to an electric vehicle charging method and a charging device. The application relates to an electric vehicle charging method and a charging device. The application relates to an electric vehicle charging method and a charging device. The application relates to an electric vehicle charging method and a charging device. The application relates to an electric vehicle charging method and a charging device. The application relates to an electric vehicle charging method and a charging device. The application relates to an electric vehicle charging method and a charging device. The application relates to an electric vehicle charging method and a charging device. The application relates to an electric vehicle charging method and a charging device. The application relates to an electric vehicle charging method and a charging device. The application relates to an electric vehicle charging method and a charging device. The application relates to an electric vehicle charging method and a charging device. The application relates to an electric vehicle charging method and a charging device. The application relates to an electric vehicle charging method and a charging

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