A charging pile control method, device, equipment and medium

Abstract

The application discloses a charging pile control method, device and equipment and a medium, and relates to the technical field of charging piles. The method comprises the following steps: determining the preset charging time period overlapping between each charging pile under a transformer according to the preset charging time period of each charging pile under the transformer; determining whether the transformer has a heavy overload risk in the overlapping preset charging time period according to the load rate of the transformer at the current time and the preset current of each charging pile under the transformer in the overlapping preset charging time period; if the transformer has a heavy overload risk in the overlapping preset charging time period, determining the target charging time period of each charging pile under the transformer according to the current time, the preset charging time period of each charging pile under the transformer and the preset disconnection time; and sending a power source closing instruction and a power source disconnecting instruction to each charging pile under the transformer according to the charging start time and the charging end time in the target charging time period, so as to reduce the heavy overload risk. The scheme improves the stability of transformer operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of charging piles, in particular to a control method and device of a charging pile, equipment and a medium. BACKGROUND

[0002] With the continuous development of electric vehicles, the social ownership of electric vehicles is increasing, and the number of vehicle charging piles is also increasing, and the burden of transformers is increasing. In the prior art, when the charging pile is connected with the electric vehicle, the charging pile immediately charges the electric vehicle. This scheme has the defects of high risk of heavy overload of the transformer and poor stability of the transformer operation. SUMMARY

[0003] The present application provides a control method, device, equipment and medium of a charging pile to reduce the risk of heavy overload and improve the stability of transformer operation.

[0004] In a first aspect, the present application provides a control method of a charging pile, comprising:

[0005] According to the preset charging time period of each charging pile under the transformer, the overlapping preset charging time period between each charging pile under the transformer is determined;

[0006] According to the load rate of the transformer at the current time and the preset current of each charging pile under the transformer in the overlapping preset charging time period, it is determined whether the transformer has a heavy overload risk in the overlapping preset charging time period;

[0007] If the transformer has a heavy overload risk in the overlapping preset charging time period, the target charging time period of each charging pile under the transformer is determined according to the current time, the preset charging time period of each charging pile under the transformer and the preset disconnection time;

[0008] According to the charging start time and the charging end time in the target charging time period, power closing instructions and power disconnecting instructions are respectively sent to each charging pile under the transformer to reduce the risk of heavy overload.

[0009] In a second aspect, the present application further provides a control device of a charging pile, comprising:

[0010] The overlapping time period determination module is configured to determine the overlapping preset charging time period between each charging pile under the transformer according to the preset charging time period of each charging pile under the transformer;

[0011] The risk determination module is configured to determine whether the transformer has a heavy overload risk in the overlapping preset charging time period according to the load rate of the transformer at the current time and the preset current of each charging pile under the transformer in the overlapping preset charging time period;

[0012] The target time period determination module is configured to determine a target charging time period of each charging pile under the transformer according to the current time, the preset charging time period of each charging pile under the transformer, and the preset disconnection time, if the transformer has a heavy overload risk in the overlapped preset charging time period.

[0013] The instruction sending module is configured to send a power-on instruction and a power-off instruction to each charging pile under the transformer according to the charging start time and the charging end time in the target charging time period, so as to reduce the heavy overload risk.

[0014] In a third aspect, an electronic device is provided, and the electronic device comprises:

[0015] at least one processor; and

[0016] a memory in communication with the at least one processor; wherein

[0017] The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the control method of the charging pile provided in any of the embodiments of the present application.

[0018] In a fourth aspect, a computer readable storage medium is provided, and the computer readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the control method of the charging pile provided in any of the embodiments of the present application when the processor executes the computer instructions.

[0019] In the embodiments of the present application, the overlapped preset charging time period between each charging pile under the transformer is determined according to the preset charging time period of each charging pile under the transformer, the heavy overload risk of the transformer in the overlapped preset charging time period is determined according to the load rate of the transformer at the current time and the preset current of each charging pile under the transformer in the overlapped preset charging time period, the target charging time period of each charging pile under the transformer is determined according to the current time, the preset charging time period of each charging pile under the transformer, and the preset disconnection time, if the transformer has a heavy overload risk in the overlapped preset charging time period, and the power-on instruction and the power-off instruction are sent to each charging pile under the transformer according to the charging start time and the charging end time in the target charging time period, so as to reduce the heavy overload risk. The technical scheme of the embodiments of the present application realizes the peak-shaving operation of each charging pile under the transformer, effectively reduces the heavy overload risk of the transformer, and improves the stability of the operation of the transformer.

[0020] It should be understood that the content described in this part is not intended to identify key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to make the technical solutions in the embodiments of the present application clearer, the accompanying drawings needed in the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description only represent some of the embodiments of the present application, and all other drawings obtained by those of ordinary skill in the art without any creative effort should fall within the protection scope of the present application.

[0022] Figure 1 is a flow chart of a control method of a charging pile according to an embodiment of the present application;

[0023] Figure 2 is a flow chart of a control method of a charging pile according to an embodiment of the present application;

[0024] Figure 3 is a flow chart of a control method of a charging pile according to an embodiment of the present application;

[0025] Figure 4A is a flow chart of a control method of a charging pile according to an embodiment of the present application;

[0026] Figure 4B is a structural schematic diagram of a transformer detection system according to an embodiment of the present application;

[0027] Figure 5 is a structural diagram of a control device of a charging pile according to an embodiment of the present application;

[0028] Figure 6 is a schematic diagram of an electronic device of a control device of a charging pile according to an embodiment of the present application. DETAILED DESCRIPTION

[0029] In order to make the technical solutions in the embodiments of the present application clearer, the accompanying drawings needed in the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description only represent some of the embodiments of the present application, and all other drawings obtained by those of ordinary skill in the art without any creative effort should fall within the protection scope of the present application.

[0030] It should be noted that the terms “include” and “have” and any variations thereof in the specification and claims of the present application and the above-mentioned accompanying drawings are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to only those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to the process, method, product or device.

[0031] Embodiment One

[0032] Figure 1 A flow chart of a control method of a charging pile is provided for an embodiment of the present application. The embodiment can be applicable to the case of controlling the charging pile. The method can be executed by a charging pile control device. The charging pile control device can be realized in the form of hardware and / or software and be specifically configured in an electronic device, such as a server.

[0033] As shown in Figure 1 , the method comprises:

[0034] S101, according to the preset charging time period of each charging pile under the transformer, determine the overlapping preset charging time period between each charging pile under the transformer.

[0035] In the embodiment, the preset charging time can be the time period during which the charging pile charges the vehicle. The preset charging time period can be set by the user of the charging pile, which is not limited by the present application. The overlapping preset charging time period can be the time period that overlaps with each other in the preset charging time period of each charging pile.

[0036] For example, the transformer includes charging pile A, charging pile B and charging pile C. The preset charging time period of charging pile A is from 8:00 to 10:00. The preset charging time period of charging pile B is from 9:00 to 11:00. The preset charging time period of charging pile C is from 10:00 to 13:00. Therefore, the overlapping preset charging time period between each charging pile under the transformer includes the overlapping 9:00 to 10:00 between charging pile A and charging pile B and the overlapping 10:00 to 11:00 between charging pile B and charging pile C.

[0037] In an optional embodiment, the power supply relationship between the power supply line, the transformer and the charging pile is obtained from the dispatching automation system. The number of the power supply line is determined, and the number of the transformer and the charging pile is determined according to the power supply relationship between the power supply line, the transformer and the charging pile. For example, two transformers are powered by power supply line 01, and the numbers of the two transformers are 0101 and 0102 in turn. The transformer numbered 0101 powers three charging piles, and the numbers of the charging piles are 010101, 010102 and 010103 in turn. Correspondingly, for a transformer, the charging piles under the transformer are determined according to the number of the transformer and the number of the charging pile. Then, the overlapping preset charging time period between each charging pile under the transformer is determined according to the preset charging time period of each charging pile under the transformer.

[0038] S102, according to the load rate of the transformer at the current time and the preset current of each charging pile under the transformer in the overlapping preset charging time period, determine whether the transformer has a heavy overload risk in the overlapping preset charging time period.

[0039] In the embodiment, the current time can be a local real current time. The preset current can be a current of the charging pile for charging in a preset charging time period. The heavy overload risk can be a risk of heavy overload operation of the transformer. The application does not limit the determination manner of the preset current. For example, the charging pile can determine the preset current according to the vehicle model and the vehicle charging mode. In a specific embodiment, the load rate of the transformer is obtained from the dispatching automation system.

[0040] Optionally, according to the load rate of the transformer at the current time and the preset currents of the charging piles under the transformer in the overlapping preset charging time period, it is determined whether the transformer has a heavy overload risk in the overlapping preset charging time period, comprising: according to the average current of the transformer and the preset currents of the charging piles under the transformer in the overlapping preset charging time period, the load proportion of each charging pile under the transformer is determined; the sum of the load proportion of each charging pile under the transformer and the load rate of the transformer at the current time is determined as the charging load rate of the transformer in the overlapping preset charging time period; according to the charging load rate of the transformer in the overlapping preset charging time period and the heavy overload threshold, it is determined whether the transformer has a heavy overload risk in the overlapping preset charging time period.

[0041] In the embodiment, the current time can be a local real current time. The preset current can be a current of the charging pile for charging in a preset charging time period. The heavy overload risk can be a risk of heavy overload operation of the transformer. The application does not limit the determination manner of the preset current. For example, the charging pile can determine the preset current according to the vehicle model and the vehicle charging mode. In a specific embodiment, the load rate of the transformer is obtained from the dispatching automation system.

[0042] Specifically, the sum of the preset currents of each charging pile in the overlapping time period and the average current of the transformer is taken as an auxiliary current; the ratio between the preset currents of each charging pile in the overlapping preset charging time period and the auxiliary current is taken as the load proportion of each charging pile under the transformer; for an overlapping preset charging time period, the sum of the load proportions of the overlapping charging piles in the overlapping preset charging time period and the load rate of the transformer at the current time is determined as the charging load rate of the transformer in the overlapping preset charging time period.

[0043] For example, the load rate of the transformer at the current time is 70%, and the transformer is connected to charging pile A, charging pile B and charging pile C, and the load proportions of the three charging piles are 5%, 6% and 7% respectively. In an overlapping preset charging time period, the overlapping charging piles are charging pile A and charging pile B, and the charging load rate of the transformer in the overlapping preset charging time period is the sum of the load proportion of charging pile A, the load proportion of charging pile B and the load rate of the transformer at the current time, that is, 81%.

[0044] If the charging load rate of the transformer in at least one overlapping preset charging time period is greater than the heavy overload threshold, the transformer has a heavy overload risk in the overlapping preset charging time period; if the charging load rate of the transformer in each overlapping preset charging time period is less than or equal to the heavy overload threshold, the transformer has no heavy overload risk in the overlapping preset charging time period.

[0045] It can be understood that by using the above technical solutions, the load proportions of the charging piles under the transformer can be determined, and the charging load rate of the transformer can be determined according to the load proportions of the charging piles under the transformer and the load rate of the transformer. According to the charging load rate and the heavy overload threshold, it can be determined whether the transformer has a heavy overload risk in the overlapping preset charging time period, which can determine whether the transformer has a heavy overload risk in the overlapping preset charging time period, and further improve the accuracy of determining whether the transformer has a heavy overload risk in the overlapping preset charging time period.

[0046] S103, if the transformer has a heavy overload risk in the overlapping preset charging time period, the target charging time period of each charging pile under the transformer is determined according to the current time, the preset charging time period of each charging pile under the transformer and the preset disconnection time.

[0047] In this embodiment, the preset disconnection time can be the time when the charging pile is disconnected from the vehicle. The preset disconnection time can be set by the user of the charging pile, and the present application does not limit it. The target charging time period can be the time period during which each charging pile under the transformer actually charges. Specifically, if the transformer has a heavy overload risk in the overlapping preset charging time period, a certain algorithm is used to determine the target charging time period of each charging pile under the transformer according to the current time, the preset charging time period of each charging pile under the transformer and the preset disconnection time.

[0048] S104, according to the charging start time and the charging end time in the target charging time period, power closing instructions and power disconnecting instructions are respectively sent to each charging pile under the transformer to reduce the heavy overload risk.

[0049] In this embodiment, the charging start time can be the minimum time in the target charging time period. The charging end time can be the maximum time in the target charging time period. The power closing instruction can be used to instruct the charging pile to close the power supply so that the charging pile charges the vehicle; the power disconnecting instruction can be used to instruct the charging pile to disconnect the power supply so that the charging pile stops charging the vehicle. For example, if the target charging time period of the charging pile A is from 9:00 to 12:00, the charging start time is 9:00, and the charging end time is 12:00; at 9:00, the power closing instruction is sent to the charging pile A so that the charging pile A starts charging the vehicle; at 12:00, the power disconnecting instruction is sent to the charging pile A so that the charging pile A stops charging the vehicle.

[0050] In an optional embodiment, the charging pile is installed with a charging pile control device, which can receive the power closing instruction and the power disconnecting instruction through wireless communication or cable communication, and close the power supply of the charging pile according to the power closing instruction and disconnect the power supply of the charging pile according to the power disconnecting instruction.

[0051] In the embodiment of the application, the preset charging time periods of the charging piles under the transformer are determined, the preset charging time periods overlapping between the charging piles under the transformer are determined, the load rate of the transformer at the current time and the preset currents of the charging piles under the transformer in the overlapping preset charging time periods are determined, whether the transformer has a heavy overload risk in the overlapping preset charging time periods is determined, the target charging time periods of the charging piles under the transformer are determined according to the current time, the preset charging time periods of the charging piles under the transformer and the preset disconnecting time, the power closing instruction and the power disconnecting instruction are sent to the charging piles under the transformer according to the charging start time and the charging end time in the target charging time period, respectively, so as to reduce the heavy overload risk. The technical scheme of the embodiment of the application realizes the peak-shaving operation of the charging piles under the transformer, effectively reduces the heavy overload risk of the transformer, and improves the stability of the operation of the transformer.

[0052] Embodiment two

[0053] Figure 2 The flowchart of the control method of the charging pile provided in the second embodiment of the application is based on the technical scheme of the above-mentioned embodiment, and the determination of the target charging time period of the charging pile under the transformer is optimized and improved.

[0054] Further, the "determining the target charging time period of each charging pile under the transformer according to the current time, the preset charging time period of each charging pile under the transformer, and the preset disconnection time" is further specified as "determining a candidate charging time period combination of the transformer according to the current time, the preset charging time period of each charging pile under the transformer, and the preset disconnection time; the candidate charging time period combination is obtained by combining the candidate charging time periods of each charging pile under the transformer; selecting an auxiliary charging time period combination from the candidate charging time period combination according to whether each candidate charging time period in the candidate charging time period combination overlaps or is overloaded; in the case of overload of the auxiliary charging time period combination, determining the overload time period length of the auxiliary charging time period combination, and selecting a target charging time period combination from the auxiliary charging time period combination according to the overload time period length; in the case of normal load of the auxiliary charging time period combination, determining the power supply time length of the auxiliary charging time period combination, and selecting a target charging time period combination from the auxiliary charging time period combination according to the power supply time length; determining the target charging time period of each charging pile under the transformer according to the target charging time period combination", so as to perfect the determination operation of the target charging time period of each charging pile under the transformer.

[0055] It should be noted that the parts not described in detail in the embodiments of the present application can be referred to the descriptions of the foregoing embodiments.

[0056] As shown in the method shown in the method, the method comprises: Figure 2

[0057] S201, determining the preset charging time period overlapping between each charging pile under the transformer according to the preset charging time period of each charging pile under the transformer.

[0058] S202, determining whether the transformer has an overload risk in the overlapping preset charging time period according to the load rate of the transformer at the current time and the preset current of each charging pile under the transformer in the overlapping preset charging time period.

[0059] S203, if the transformer has an overload risk in the overlapping preset charging time period, determining a candidate charging time period combination of the transformer according to the current time, the preset charging time period of each charging pile under the transformer, and the preset disconnection time; wherein the candidate charging time period combination is obtained by combining the candidate charging time periods of each charging pile under the transformer.

[0060] In the embodiment, the candidate charging time period combination can be a combination of the candidate charging time periods of each charging pile under the transformer. Among different candidate charging time period combinations, at least the candidate charging time period of one charging pile is different. The candidate charging time period of the charging pile can be a time period in which the charging pile can charge the vehicle.

[0061] ​Specifically, the preset charging time period length of each charging pile under the transformer is determined according to the preset charging time period of each charging pile under the transformer; for each charging pile, a time period with a length of the preset charging time period length of the charging pile is selected as the candidate charging time period of the charging pile from the current time to the preset disconnection time of the charging pile. The time interval for selecting the candidate charging time period is not limited in the present application, for example, the time interval can be 1 minute, 30 minutes or 1 hour, etc. The candidate charging time period combination of the transformer is obtained by combining the candidate charging time periods of each charging pile under the transformer.

[0062] The candidate time period of the charging pile is exemplified: the time interval is 1 minute, the current time is 8 o'clock, the preset charging time period of the charging pile A is from 8 o'clock to 11 o'clock, and the preset disconnection time is 13 o'clock. The length of the preset charging time period of the charging pile A is 3 hours, so a time period with a length of 3 hours is selected as the candidate charging time period of the charging pile A from 8 o'clock to 13 o'clock; the candidate charging time period of the charging pile A can include (8:00-11:00), (8:01-11:01)···(9:59-12:59), (10:00-13:00).

[0063] S204, according to whether the candidate charging time periods in the candidate charging time period combination overlap or are overloaded, an auxiliary charging time period combination is selected from the candidate charging time period combination.

[0064] In the embodiment, the auxiliary charging time period combination can include the candidate charging time period combination with overload and the auxiliary charging time period combination with normal load. The overload can mean that the charging load rate in the overlapping candidate charging time periods in the candidate charging time period combination is greater than the overload threshold; the normal load can mean that the charging load rate in the overlapping candidate charging time periods in the candidate charging time period combination is less than or equal to the overload threshold, and each candidate charging time period in the candidate charging time period combination is independent of each other.

[0065] Optionally, the auxiliary charging time period combination is selected from the candidate charging time period combination according to whether the candidate charging time periods in the candidate charging time period combination overlap or are overloaded, including: if each candidate charging time period in at least two candidate charging time period combinations is independent of each other, the at least two candidate charging time period combinations are taken as the auxiliary charging time period combination; if each candidate charging time period combination overlaps, it is determined whether the candidate charging time period combination is overloaded; if at least one candidate charging time period combination has normal load, the candidate charging time period combination with normal load is taken as the auxiliary charging time period combination; if all candidate charging time period combinations are overloaded, all candidate charging time period combinations are taken as the auxiliary charging time period combination.

[0066] The candidate charging time period combinations all overlapping can mean that there is mutual overlap between at least two candidate charging time periods in each candidate charging time period combination. Specifically, if the candidate charging time period combinations all overlap, the charging load rate in the overlapping candidate charging time periods in each candidate charging time period combination is determined, and whether heavy overload occurs in each candidate charging time period combination is determined. If the charging load rate in the overlapping candidate charging time periods in at least one candidate charging time period combination is less than or equal to the heavy overload threshold, the load normal candidate charging time period combination is taken as the auxiliary charging time period combination. If the charging load rate in the overlapping candidate charging time periods in all candidate charging time period combinations is greater than the heavy overload threshold, all candidate charging time period combinations are taken as the auxiliary charging time period combination.

[0067] It can be understood that, by using the above method, the auxiliary charging time period combination is determined from the candidate charging time period combination according to the mutual independence or overlap between the candidate charging time periods in the candidate charging time period combination, and the load normal and heavy overload conditions of the candidate charging time periods, the auxiliary charging time period combination can be flexibly determined according to different overlap conditions and heavy overload conditions of the candidate charging time periods in the candidate charging time period combination, the flexibility and accuracy of determining the auxiliary charging time period combination are improved, and the accuracy of determining the target charging time period combination from the auxiliary charging time period combination is improved.

[0068] S205A, in the case of heavy overload of the auxiliary charging time period combination, the heavy overload time period length of the auxiliary charging time period combination is determined, and the target charging time period combination is selected from the auxiliary charging time period combination according to the heavy overload time period length. Continue to perform S206.

[0069] In this embodiment, the heavy overload time period can be the overlapping candidate charging time period in the auxiliary charging time period combination whose charging load rate is greater than the heavy overload threshold. Specifically, in the case of heavy overload of the auxiliary charging time period combination, the heavy overload time period length of the auxiliary charging time period combination is determined, and the auxiliary charging time period combination with the smallest heavy overload time period length is selected from the auxiliary charging time period combination as the target charging time period combination.

[0070] S205B, in the case of load normal of the auxiliary charging time period combination, the power supply time length of the auxiliary charging time period combination is determined, and the target charging time period combination is selected from the auxiliary charging time period combination according to the power supply time length. Continue to perform S206.

[0071] In this embodiment, the power supply time length can be the difference between the minimum time and the maximum time in the auxiliary charging time period combination. For example, the auxiliary charging time period combination includes (8:00-11:00), (9:59-12:59) and (10:00-13:00), and the power supply time length of the auxiliary charging time period combination is the difference between the minimum time 8 and the maximum time 13, i.e., the power supply time length is 5 hours.

[0072] Specifically, in the case that the load of the auxiliary charging time period combination is normal, the power supply time length of the auxiliary charging time period combination is determined, and the auxiliary charging time period combination with the minimum power supply time length is selected from the auxiliary charging time period combination as the target charging time period combination.

[0073] S206, according to the target charging time period combination, determining the target charging time period of each charging pile under the transformer.

[0074] In this embodiment, each candidate charging time period in the target charging time period combination is respectively taken as the target charging time period of the corresponding charging pile.

[0075] S207, according to the charging start time and the charging end time in the target charging time period, respectively sending the power source closing instruction and the power source disconnecting instruction to each charging pile under the transformer to reduce the risk of overload.

[0076] The embodiment of the application determines the preset charging time periods overlapping between each charging pile under the transformer according to the preset charging time periods of each charging pile under the transformer, determines whether the transformer has a heavy overload risk in the overlapping preset charging time period according to the load rate of the transformer at the current time and the preset current of each charging pile under the transformer in the overlapping preset charging time period, determines a candidate charging time period combination of the transformer according to the current time, the preset charging time periods of each charging pile under the transformer and the preset disconnection time if the transformer has a heavy overload risk in the overlapping preset charging time period, selects an auxiliary charging time period combination from the candidate charging time period combination according to whether each candidate charging time period in the candidate charging time period combination overlaps or is heavily overloaded, selects a target charging time period combination from the auxiliary charging time period combination according to the heavy overload time period length of the auxiliary charging time period combination if the auxiliary charging time period combination is heavily overloaded, selects a target charging time period combination from the auxiliary charging time period combination according to the power supply time length of the auxiliary charging time period combination if the auxiliary charging time period combination has a normal load, determines the target charging time period of each charging pile under the transformer according to the target charging time period combination, and sends a power source closing instruction and a power source disconnecting instruction to each charging pile under the transformer according to the charging start time and the charging end time in the target charging time period, so as to reduce the heavy overload risk. The technical scheme of the embodiment of the application determines a candidate charging time period combination of the transformer, determines an auxiliary charging time period combination according to the overlap and heavy overload of each candidate charging time period in the candidate charging time period combination, determines a target charging time period combination from the auxiliary charging time period combination according to different situations of the auxiliary charging time period combination, determines the target charging time period of each charging pile under the transformer according to the target charging time period combination, improves the flexibility of determining the target charging time period combination, and further improves the flexibility of determining the target charging time period of the charging pile and the accuracy of the target charging time period of the charging pile.

[0077] Embodiment three

[0078] Figure 3 The flowchart of the control method of the charging pile provided for the third embodiment of the application is based on the technical scheme of the above-mentioned embodiments and has been additionally optimized.

[0079] Further, if the three-phase imbalance signal of the transformer is detected, a first current ratio between the total working current of each charging pile under the transformer and the maximum current value in the three-phase line of the transformer is determined, if the first current ratio is greater than a preset first threshold value, the first abnormality number is updated, and corresponding first abnormality early warning information is generated according to the first abnormality number and the current of each charging pile under the transformer, so as to realize early warning of the transformer three-phase imbalance caused by the charging pile.

[0080] It should be noted that the parts not described in detail in the embodiments of the present application can refer to the descriptions of the foregoing embodiments.

[0081] As Figure 3 shown in the method, the method comprises:

[0082] S301, according to the preset charging time period of each charging pile under the transformer, determine the overlapping preset charging time period between each charging pile under the transformer.

[0083] S302, according to the load rate of the transformer at the current time and the preset current of each charging pile under the transformer in the overlapping preset charging time period, determine whether the transformer has a heavy overload risk in the overlapping preset charging time period.

[0084] S303, if the transformer has a heavy overload risk in the overlapping preset charging time period, then according to the current time, the preset charging time period of each charging pile under the transformer and the preset disconnection time, determine the target charging time period of each charging pile under the transformer.

[0085] S304, according to the charging start time and the charging end time in the target charging time period, respectively send power closing instructions and power disconnecting instructions to each charging pile under the transformer, so as to reduce the heavy overload risk.

[0086] S305, if the three-phase imbalance signal of the transformer is detected, determine the first current ratio between the total working current of each charging pile under the transformer and the maximum current value in the three-phase line of the transformer.

[0087] In this embodiment, the three-phase imbalance signal can be a signal indicating that the transformer has a three-phase imbalance phenomenon. The total working current of each charging pile under the transformer can be the sum of the currents of each charging pile under the transformer that is currently charging a vehicle.

[0088] Specifically, the ratio between the total working current of each charging pile under the transformer and the maximum current value in the three-phase line of the transformer is taken as the first current ratio. In an optional embodiment, the charging pile control device further comprises a detection module. The detection module can be used to collect the current, voltage and power of the corresponding charging pile in real time, and upload the collected current, voltage and power to the dispatching automation system. The dispatching automation system can store the current, voltage and power of the charging pile received in real time according to the number of the charging pile. Correspondingly, if the three-phase imbalance signal of the transformer is detected, the charging piles under the transformer can be determined according to the number of the transformer and the number of all charging piles. Then the first current ratio between the total working current of each charging pile under the transformer and the maximum current value in the three-phase line of the transformer is determined.

[0089] S306, if the first current ratio is greater than a preset first threshold, update the first abnormality number.

[0090] In this embodiment, the preset first threshold value can be set by the technician according to actual needs or practical experience, and the present application does not limit this. In a specific embodiment, the preset first threshold value is 30%. The first abnormal number of times can be the number of times that the transformer appears three-phase imbalance phenomenon due to the charging pile charging the vehicle. Specifically, if the first current ratio is greater than the preset first threshold value, it can be determined that the transformer has appeared three-phase imbalance phenomenon due to the charging pile charging the vehicle; the first abnormal number of times is added by one as the new first abnormal number of times.

[0091] S307, generating corresponding first abnormal early warning information according to the first abnormal number of times and the current of each charging pile under the transformer.

[0092] In this embodiment, the first abnormal early warning information can be the early warning information of three-phase imbalance. The first abnormal early warning information includes the information of the first abnormal number of times and the current information of each charging pile under the transformer. In an optional embodiment, the number of the transformer and the number of the charging pile under the transformer are recorded, so that the technician can modify the transformer and / or the charging pile according to the first abnormal information, the number of the transformer and the number of the charging pile under the transformer, for example, adjusting the line of the charging pile connected to the transformer.

[0093] This invention, in its embodiments, determines the overlapping preset charging time periods among the charging piles under the transformer based on their preset charging time periods. It then determines whether the transformer faces a risk of heavy overload during these overlapping charging time periods based on the transformer's current load rate and the preset current of each charging pile within these overlapping charging time periods. If the transformer faces a risk of heavy overload during these overlapping charging time periods, a target charging time period for each charging pile under the transformer is determined based on the current time, the preset charging time periods of each charging pile under the transformer, and a preset disconnection time. Power-on and power-off commands are sent to each charging pile under the transformer based on the charging start and end times within the target charging time periods to reduce the risk of heavy overload. If a three-phase imbalance signal is detected in the transformer, a first current ratio is determined between the total operating current of each charging pile under the transformer and the maximum current value in the transformer's three-phase lines. If the first current ratio is greater than a preset first threshold, the first anomaly count is updated. Finally, a corresponding first anomaly warning message is generated based on the first anomaly count and the current of each charging pile under the transformer. The technical solution of this invention can determine whether the three-phase imbalance of the transformer is caused by the charging pile charging the vehicle based on the relationship between the first current ratio and the preset first threshold. If the first current ratio is greater than the preset first threshold, the first abnormality count is updated and a corresponding first abnormality warning message is generated to promptly remind technicians to rectify the transformer and / or the charging pile, thereby reducing the operating time of the transformer under three-phase imbalance and improving the stability of transformer operation.

[0094] Example 4

[0095] Figure 4A This is a flowchart of the control method for a charging pile provided in Embodiment 4 of the present invention. The present invention has made additional optimizations based on the technical solutions of the above embodiments.

[0096] Furthermore, the following is added: "If a heavy overload signal of the transformer is detected, determine the second current ratio between the total operating current of each charging pile under the transformer and the average current of the transformer. If the second current ratio is greater than the preset second threshold, update the second anomaly count; generate corresponding second anomaly warning information based on the second anomaly count and the current of the charging pile under the transformer," so as to realize the update operation of the target cylindrical model.

[0097] It should be noted that for any parts not described in detail in the embodiments of the present invention, please refer to the description in the foregoing embodiments.

[0098] like Figure 4A The method shown includes:

[0099] S401. Based on the preset charging time periods of each charging pile under the transformer, determine the preset overlapping charging time periods between each charging pile under the transformer.

[0100] S402, determining whether the transformer has a heavy overload risk in the overlapping preset charging time period according to the load rate of the transformer at the current time and preset currents of each charging pile under the transformer in the overlapping preset charging time period.

[0101] S403, if the transformer has a heavy overload risk in the overlapping preset charging time period, determining target charging time periods of each charging pile under the transformer according to the current time, the preset charging time periods of each charging pile under the transformer and preset disconnection time.

[0102] S404, sending power closing instructions and power disconnecting instructions to each charging pile under the transformer according to charging start time and charging end time in the target charging time period, so as to reduce the heavy overload risk.

[0103] S405, if a heavy overload signal of the transformer is detected, determining a second current ratio between total working currents of each charging pile under the transformer and an average current of the transformer.

[0104] In the embodiment, the heavy overload signal can be a signal that the transformer has a heavy overload phenomenon. Specifically, the ratio between the total working currents of each charging pile under the transformer and the average current of the transformer is taken as the second current ratio. In an optional embodiment, the charging piles under the transformer can be determined according to the number of the transformer and the numbers of all charging piles. Then the second current ratio between the total working currents of each charging pile under the transformer and the average current of the transformer is determined.

[0105] S406, if the second current ratio is greater than a preset second threshold, updating the second abnormality times.

[0106] In the embodiment, the preset second threshold can be set by the technician according to the actual demand or practical experience, and the present application does not limit it. In a specific embodiment, the preset second threshold is 30%. The second abnormality times can be the number of times that the transformer has a heavy overload phenomenon due to the charging of the charging pile to the vehicle. Specifically, if the second current ratio is greater than the preset second threshold, it can be determined that the transformer has a heavy overload phenomenon due to the charging of the charging pile to the vehicle; the second abnormality times is added by one as the new second abnormality times.

[0107] S407, generating corresponding second abnormality warning information according to the second abnormality times and the current of the charging pile under the transformer.

[0108] In this embodiment, the second abnormality warning information can be overload warning information. The second abnormality warning information includes information of the second abnormality times and current information of each charging pile under the transformer. In an optional embodiment, the number of the transformer and the number of the charging pile under the transformer are recorded, so that the technician can rectify the transformer and / or the charging pile with the corresponding number, for example, increase the capacity of the transformer, etc.

[0109] Optionally, according to the current time, the charging remaining time of the charging pile under the transformer, and the preset disconnection time, the abnormal recovery charging time period of each charging pile under the transformer in the actual charging process is determined; and according to the charging start time and the charging end time in the abnormal recovery charging time period, the power closing instruction and the power disconnecting instruction are respectively sent to the corresponding charging pile under the transformer.

[0110] The charging remaining time can be the time period during which the charging pile still needs to charge the vehicle. The abnormal recovery charging time period can be the time period during which each charging pile under the transformer charges in the actual charging process. It should be noted that the determination step of the abnormal recovery charging time period is similar to the determination step of the target charging time period, that is, according to the current time, the charging remaining time of each charging pile under the transformer, and the preset disconnection time, the candidate charging time period combination of the transformer is determined; wherein the candidate charging time period combination is obtained by combining the candidate charging time period of each charging pile under the transformer; according to whether each candidate charging time period in the candidate charging time period combination overlaps or is overloaded, the reference charging time period combination is selected from the candidate charging time period combination; in the case that the reference charging time period combination is overloaded, the overload time period length of the reference charging time period combination is determined, and the abnormal recovery charging time period combination is selected from the reference charging time period combination according to the overload time period length; in the case that the reference charging time period combination is normally loaded, the power supply time length of the reference charging time period combination is determined, and the abnormal recovery charging time period combination is selected from the reference charging time period combination according to the power supply time length; according to the abnormal recovery charging time period combination, the abnormal recovery charging time period of each charging pile under the transformer is determined. The step of selecting the reference charging time period combination from the candidate charging time period combination is also similar to the step of selecting the auxiliary charging time period combination from the candidate charging time period combination, which will not be described here.

[0111] It can be understood that by using the above technical solution, according to the current time, the charging remaining time of the charging pile under the transformer, and the preset disconnection time, the abnormal recovery charging time period of each charging pile under the transformer is determined; and according to the charging start time and the charging end time in the abnormal recovery charging time period, the power closing instruction and the power disconnecting instruction are respectively sent to the corresponding charging pile under the transformer, which realizes the peak-shaving operation of each charging pile under the transformer that is charging, and further realizes the management of the overloaded transformer, thereby improving the stability of the transformer operation.

[0112] Optionally, Figure 4B is a structural schematic diagram of a transformer detection system. As shown in the figure, Figure 4B The transformer detection system includes a charging pile communication module, a detection module, a data storage module, a dispatch automation system communication module and a warning module. Among them,

[0113] The charging pile communication module is used for real-time acquisition of current, voltage, power, preset charging time period and preset current and other data uploaded by the charging pile control device, and sending the current, voltage and power and other data of the charging pile to the detection module; receiving the power disconnect instruction and the power close instruction sent by the detection module, and sending the received power disconnect instruction and the power close instruction to the charging pile control device, so as to control the charging pile by the charging pile control device;

[0114] The dispatch automation system communication module is used for real-time acquisition of the power supply relationship between the transformer and the charging pile, the current of the three-phase line of the transformer from the dispatch automation system, and detection of the three-phase imbalance signal of the transformer and the heavy overload signal of the transformer from the dispatch automation system, and sending the power supply relationship between the transformer and the charging pile, the current of the three-phase line of the transformer, the three-phase imbalance signal of the transformer and the heavy overload signal of the transformer to the detection module;

[0115] The detection module is configured to determine the number of the transformer and the number of the charging pile according to the power supply relationship between the transformer and the charging pile, and send data such as the number, current and voltage of each charging pile to the data storage module; determine the preset charging time period of each charging pile under the transformer, and determine the overlapping preset charging time period between each charging pile under the transformer; determine whether the transformer has a heavy overload risk in the overlapping preset charging time period according to the load rate of the transformer at the current time and the preset current of each charging pile under the transformer in the overlapping preset charging time period; if the transformer has a heavy overload risk in the overlapping preset charging time period, determine the target charging time period of each charging pile under the transformer according to the current time, the preset charging time period of each charging pile under the transformer and the preset disconnection time; send a power closing instruction and a power disconnecting instruction to the charging pile communication module according to the charging start time and the charging end time in the target charging time period; if a three-phase imbalance signal of the transformer is received, determine a first current ratio between the total working current of each charging pile under the transformer and the maximum current value in the three-phase line of the transformer; if the first current ratio is greater than a preset first threshold, update a first abnormality number; send the first abnormality number and the current of each charging pile under the transformer to the early warning module; if a heavy overload signal of the transformer is received, determine a second current ratio between the total working current of each charging pile under the transformer and the average current of the transformer; if the second current ratio is greater than a preset second threshold, update a second abnormality number; send the second abnormality number and the current of the charging pile under the transformer to the early warning module; determine an abnormal recovery charging time period of each charging pile under the transformer in the actual charging process according to the current time, the charging remaining time of the charging pile under the transformer and the preset disconnection time; send a power closing instruction and a power disconnecting instruction to the corresponding charging pile under the transformer according to the charging start time and the charging end time in the abnormal recovery charging time period.

[0116] The data storage module is configured to store the received data such as the number, current and voltage of each charging pile and the reverse storage;

[0117] The early warning module is configured to generate first abnormality early warning information according to the first abnormality number and the current of each charging pile under the transformer; generate second abnormality early warning information according to the second abnormality number and the current of the charging pile under the transformer.

[0118] This invention, in its embodiments, determines the overlapping preset charging time periods among charging piles under a transformer based on their preset charging time periods. It then determines whether the transformer faces a risk of severe overload during these overlapping charging time periods based on the transformer's current load rate and the preset current of each charging pile within these overlapping periods. If such a risk exists, a target charging time period is determined for each charging pile based on the current time, the preset charging time periods, and the preset disconnection time. Power-on and power-off commands are sent to each charging pile under the transformer based on the start and end times of the charging within the target charging time period to mitigate the risk of severe overload. If a severe overload signal is detected, a second current ratio is determined between the total operating current of each charging pile and the average current of the transformer. If this second current ratio exceeds a preset second threshold, the second anomaly count is updated. Finally, a corresponding second anomaly warning is generated based on the second anomaly count and the current of each charging pile under the transformer. The technical solution of this invention can determine whether the transformer is overloaded due to the charging pile charging the vehicle based on the relationship between the second current ratio and the preset second threshold. If the second current ratio is greater than the preset second threshold, the second abnormality count is updated and a corresponding second abnormality warning message is generated to promptly remind technicians to rectify the transformer and / or the charging pile, thereby reducing the transformer's operating time under heavy overload conditions and improving the stability of transformer operation.

[0119] Example 5

[0120] Figure 5 This is a structural diagram of a control device for a charging pile provided in Embodiment 5 of the present invention. This embodiment is applicable to situations where charging piles are controlled. The control device for the charging pile can be implemented in hardware and / or software and is specifically configured in an electronic device, such as a server.

[0121] like Figure 5 The control device for the charging pile shown includes an overlapping time period determination module 501, a risk determination module 502, a target time period determination module 503, and a command sending module 504.

[0122] The overlapping time period determination module 501 is used to determine the preset charging time periods that overlap between the charging piles under the transformer based on the preset charging time periods of each charging pile under the transformer.

[0123] The risk determination module 502 is used to determine whether the transformer has a risk of heavy overload during the overlapping preset charging time period based on the transformer's load rate at the current moment and the preset current of each charging pile under the transformer during the overlapping preset charging time period.

[0124] The target time period determination module 503 is used to determine the target charging time period of each charging pile under the transformer if the transformer has a risk of heavy overload during the overlapping preset charging time periods. This is based on the current time, the preset charging time period of each charging pile under the transformer, and the preset disconnection time.

[0125] The instruction sending module 504 is used to send power closing instructions and power disconnection instructions to each charging pile under the transformer according to the charging start time and charging end time in the target charging time period, so as to reduce the risk of heavy overload.

[0126] This invention employs an overlapping time period determination module to determine the pre-defined overlapping charging time periods among the charging piles under the transformer, based on the pre-defined charging time periods of each charging pile. A risk determination module determines whether the transformer faces a risk of severe overload during the overlapping charging time periods, based on the transformer's current load rate and the pre-defined current of each charging pile within the overlapping charging time periods. A target time period determination module determines the target charging time period for each charging pile under the transformer if there is a risk of severe overload during the overlapping charging time periods, based on the current time, the pre-defined charging time periods of each charging pile, and the pre-defined disconnection time. Finally, an instruction sending module sends power-on and power-off instructions to each charging pile under the transformer based on the charging start and end times within the target charging time periods, thereby reducing the risk of severe overload. This invention's technical solution enables staggered operation of the charging piles under the transformer, effectively reducing the risk of severe overload and improving the stability of transformer operation.

[0127] Optionally, the target time period determination module 503 includes:

[0128] The candidate combination determination unit is used to determine the candidate charging time period combination of the transformer based on the current time, the preset charging time period of each charging pile under the transformer, and the preset disconnection time. The candidate charging time period combination is obtained by combining the candidate charging time periods of each charging pile under the transformer.

[0129] The auxiliary combination determination unit is used to select an auxiliary charging time period combination from the candidate charging time period combinations based on whether the candidate charging time periods overlap or whether there is a heavy overload.

[0130] The first target combination determination unit is used to determine the length of the overload time period of the auxiliary charging time period combination when the auxiliary charging time period combination is under heavy overload, and select the target charging time period combination from the auxiliary charging time period combination according to the length of the overload time period.

[0131] The second target combination determination unit is configured to determine a power supply time length of the auxiliary charging time period combination in a case where the auxiliary charging time period combination is normal, and select a target charging time period combination from the auxiliary charging time period combination according to the power supply time length.

[0132] The target time period determination unit is configured to determine target charging time periods of each charging pile under the transformer according to the target charging time period combination.

[0133] Optionally, the auxiliary combination determination unit is specifically configured to:

[0134] If each candidate charging time period in the at least two candidate charging time period combinations is independent of each other, the at least two candidate charging time period combinations are taken as the auxiliary charging time period combination.

[0135] If each candidate charging time period combination overlaps, it is determined whether each candidate charging time period combination is overloaded; if at least one candidate charging time period combination is normal, the candidate charging time period combination that is normal is taken as the auxiliary charging time period combination; if all candidate charging time period combinations are overloaded, all candidate charging time period combinations are taken as the auxiliary charging time period combination.

[0136] Optionally, the risk determination module 502 is specifically configured to:

[0137] According to the average current of the transformer and the preset current of each charging pile under the transformer in the overlapping preset charging time period, a load proportion of each charging pile under the transformer is determined.

[0138] An addition between the load proportion of each charging pile under the transformer and a load rate of the transformer at the current moment is determined as a charging load rate of the transformer in the overlapping preset charging time period.

[0139] According to the charging load rate of the transformer in the overlapping preset charging time period and an overload threshold, it is determined whether the transformer has an overload risk in the overlapping preset charging time period.

[0140] Optionally, the device further includes:

[0141] The first ratio determination module is configured to, if the three-phase unbalance signal of the transformer is detected, determine a first current ratio between a total working current of each charging pile under the transformer and a maximum current value in a three-phase line of the transformer.

[0142] The first number update module is configured to, if the first current ratio is greater than a preset first threshold, update a first abnormal number.

[0143] The first information generation module is configured to generate corresponding first abnormality early warning information according to the first abnormality number and the current of each charging pile under the transformer.

[0144] Optionally, the device further comprises:

[0145] The second ratio determination module is configured to determine a second current ratio between the total working current of each charging pile under the transformer and the average current of the transformer if the overload signal of the transformer is detected.

[0146] The second number updating module is configured to update the second abnormality number if the second current ratio is greater than a preset second threshold.

[0147] The second information generation module is configured to generate corresponding second abnormality early warning information according to the second abnormality number and the current of each charging pile under the transformer.

[0148] Optionally, the device further comprises:

[0149] The time period determination module is configured to determine an abnormality recovery charging time period of each charging pile under the transformer in the actual charging process according to the current time, the remaining charging time of each charging pile under the transformer, and a preset disconnection time.

[0150] The recovery instruction sending module is configured to send a power closing instruction and a power disconnecting instruction to each charging pile under the transformer according to the charging start time and the charging end time in the abnormality recovery charging time period, respectively.

[0151] The control device of the charging pile can execute the control method of the charging pile provided by any embodiment of the present application, and has the corresponding function modules and beneficial effects of executing the control method of each charging pile.

[0152] Embodiment six

[0153] Figure 6 A structural schematic diagram of an electronic device 10 that can be used to implement embodiments of the present application is shown. The electronic device is intended to represent various forms of digital computers, such as laptops, desktops, tablets, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular telephones, smart phones, wearable devices (e.g., headsets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be examples only, and are not intended to limit the implementations of the present application described and / or claimed in this document.

[0154] As Figure 6As shown, the electronic device 10 includes at least one processor 11, and a memory, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., connected to the at least one processor 11 in communication. The memory stores a computer program executable by the at least one processor 11, and the processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or loaded into the random access memory (RAM) 13 from the storage unit 18. In the RAM 13, various programs and data required for the operation of the electronic device 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0155] Various components in the electronic device 10 are connected to the I / O interface 15, including an input unit 16, such as a keyboard, a mouse, etc., an output unit 17, such as various types of displays, a speaker, etc., a storage unit 18, such as a magnetic disk, an optical disk, etc., and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information / data with other devices through a computer network, such as the Internet, and / or various telecommunication networks.

[0156] The processor 11 can be various general and / or special-purpose processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 performs various methods and processes described above, such as the control method of the charging pile.

[0157] In some embodiments, the control method of the charging pile can be implemented as a computer program tangibly embodied in a computer readable storage medium, such as the storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on the electronic device 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the control method of the charging pile described above can be performed. Alternatively, in other embodiments, the processor 11 can be configured to perform the control method of the charging pile by any other appropriate means, such as by means of firmware.

[0158] The various embodiments of the systems and techniques described above can be implemented in digital electronic circuitry, integrated circuitry, a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on a chip (SOC), a load programmable logic device (CPLD), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include implementation in one or more computer programs that are executable and / or interpretable on a programmable system including at least one programmable processor, which can be special or general purpose, coupled to receive data and instructions from, and to transmit data and instructions to, a storage system, at least one input device, and at least one output device.

[0159] Computer programs used to implement the processes of the application can be written in any combination of one or more programming languages. These computer programs can be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer program, when executed, can cause instructions defined in the flow charts and / or block diagrams to be implemented. The computer program can be executed entirely on a machine, partially on a machine, partially on a machine as a standalone software package and partially on a remote machine or entirely on a remote machine or server.

[0160] In the context of the present application, a computer-readable storage medium can be a tangible medium that can contain or store computer programs for use by or in connection with an instruction execution system, apparatus, or device. Computer-readable storage media can include, but are not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium can be a machine-readable signal medium. More specific examples of the machine-readable storage medium will include one or more lines of electrical connections, portable computer disks, hard disk drives, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or Flash memory), optical fibers, portable compact disc read-only memories (CD-ROMs), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0161] To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user and a keyboard and a pointing device (e.g., a mouse or a trackball) by which the user can provide input to the electronic device. Other kinds of devices can be used to provide for interaction with a user as well; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form, including acoustic, speech, or tactile input.

[0162] The systems and techniques described here can be implemented in a computing system that includes a back end component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front end component (e.g., a user computer having a graphical user interface or a Web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such back end, middleware, or front end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0163] The computing system can include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. A server can be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system, to solve the defects of large management difficulty and weak business scalability in traditional physical host and VPS service.

[0164] It should be understood that the various forms of flow shown above can be re-ordered, added to, or deleted from without departing from the scope of the present disclosure. For example, the steps recited in the present disclosure can be executed in parallel, executed in sequence, or executed in a different order, as long as the desired results of the present disclosure are achieved, and the present disclosure is not limited herein.

[0165] The above detailed description does not limit the scope of the present disclosure. It is understood that various modifications, combinations, sub-combinations, and alternatives can be made to the detailed disclosure without departing from the spirit and principles of the present disclosure. Any modifications, equivalent substitutions, improvements, and the like that are made within the spirit and principles of the present disclosure are included in the scope of the present disclosure.

Claims

1. A control method for a charging pile, characterized in that, include: Based on the preset charging time period of each charging pile under the transformer, determine the preset overlapping charging time periods between each charging pile under the transformer. Based on the transformer's load rate at the current moment and the preset current of each charging pile under the transformer during the overlapping preset charging time period, determine whether the transformer has a risk of heavy overload during the overlapping preset charging time period. If the transformer is at risk of heavy overload during the overlapping preset charging time periods, the target charging time period for each charging pile under the transformer is determined based on the current time, the preset charging time period for each charging pile under the transformer, and the preset disconnection time. Based on the charging start time and charging end time in the target charging time period, power closing command and power disconnection command are sent to each charging pile under the transformer respectively to reduce the risk of heavy overload. The step of determining the target charging time period for each charging pile under the transformer based on the current time, the preset charging time period for each charging pile under the transformer, and the preset disconnection time includes: Based on the current time, the preset charging time period and preset disconnection time of each charging pile under the transformer, a candidate charging time period combination for the transformer is determined; wherein, the candidate charging time period combination is obtained by combining the candidate charging time periods of each charging pile under the transformer. Based on whether the candidate charging time periods overlap or are under heavy overload in the candidate charging time period combination, select the auxiliary charging time period combination from the candidate charging time period combination. In the case of heavy overload of the auxiliary charging time period combination, the length of the heavy overload time period of the auxiliary charging time period combination is determined, and a target charging time period combination is selected from the auxiliary charging time period combination according to the length of the heavy overload time period. When the load of the auxiliary charging time period combination is normal, determine the power supply time length of the auxiliary charging time period combination, and select the target charging time period combination from the auxiliary charging time period combination according to the power supply time length. Based on the combination of target charging time periods, the target charging time periods for each charging pile under the transformer are determined.

2. The method according to claim 1, characterized in that, Based on whether the candidate charging time periods overlap or are under heavy overload in the candidate charging time period combinations, auxiliary charging time period combinations are selected from the candidate charging time period combinations, including: If the candidate charging time periods in at least two candidate charging time period combinations are independent of each other, then the at least two candidate charging time period combinations are used as auxiliary charging time period combinations. If all candidate charging time period combinations overlap, it is determined whether each candidate charging time period combination has experienced heavy overload; if at least one candidate charging time period combination has a normal load, the candidate charging time period combination with a normal load is used as the auxiliary charging time period combination; if all candidate charging time period combinations are heavily overloaded, all candidate charging time period combinations are used as the auxiliary charging time period combination.

3. The method according to any one of claims 1-2, characterized in that, Based on the transformer's current load rate and the preset current of each charging pile under the transformer during the overlapping preset charging time periods, determine whether the transformer has a risk of heavy overload during the overlapping preset charging time periods, including: The load ratio of each charging pile under the transformer is determined based on the average current of the transformer and the preset current of each charging pile under the transformer during the overlapping preset charging time period. The sum of the load percentage of each charging pile under the transformer and the load rate of the transformer at the current moment is determined as the charging load rate of the transformer during the overlapping preset charging time period. Based on the charging load rate and heavy overload threshold of the transformer during the overlapping preset charging time periods, it is determined whether the transformer has a risk of heavy overload during the overlapping preset charging time periods.

4. The method according to claim 1, characterized in that, The method further includes: If a three-phase imbalance signal is detected in the transformer, the first current ratio between the total operating current of each charging pile under the transformer and the maximum current value in the three-phase line of the transformer is determined. If the first current ratio is greater than a preset first threshold, then update the first anomaly count; Based on the first number of anomalies and the current of each charging pile under the transformer, a corresponding first anomaly warning message is generated.

5. The method according to claim 1, characterized in that, The method further includes: If a heavy overload signal of the transformer is detected, determine the second current ratio between the total operating current of each charging pile under the transformer and the average current of the transformer. If the second current ratio is greater than the preset second threshold, then update the second anomaly count; Based on the number of the second anomalies and the current of the charging pile under the transformer, a corresponding second anomaly warning message is generated.

6. The method according to claim 5, characterized in that, The method further includes: Based on the current time, the remaining charging time of the charging pile under the transformer, and the preset disconnection time, determine the abnormal recovery charging time period of each charging pile under the transformer during the actual charging process; Based on the charging start time and charging end time in the abnormal recovery charging period, a power closing command and a power disconnect command are sent to the corresponding charging pile under the transformer, respectively.

7. A control device for a charging pile, characterized in that, include: The overlapping time period determination module is used to determine the preset charging time periods that overlap between the charging piles under the transformer, based on the preset charging time periods of each charging pile under the transformer. The risk determination module is used to determine whether the transformer has a risk of heavy overload during the overlapping preset charging time period based on the transformer's load rate at the current moment and the preset current of each charging pile under the transformer during the overlapping preset charging time period. The target time period determination module is used to determine the target charging time period for each charging pile under the transformer if there is a risk of heavy overload during the overlapping preset charging time periods. This is based on the current time, the preset charging time period of each charging pile under the transformer, and the preset disconnection time. The instruction sending module is used to send power closing instructions and power disconnection instructions to each charging pile under the transformer according to the charging start time and charging end time in the target charging time period, so as to reduce the risk of heavy overload. The target time period determination module includes: The candidate combination determination unit is used to determine the candidate charging time period combination of the transformer based on the current time, the preset charging time period of each charging pile under the transformer, and the preset disconnection time; the candidate charging time period combination is obtained by combining the candidate charging time periods of each charging pile under the transformer. An auxiliary combination determination unit is used to select an auxiliary charging time period combination from the candidate charging time period combination based on whether the candidate charging time periods overlap or whether there is a heavy overload. The first target combination determination unit is used to determine the overload time period length of the auxiliary charging time period combination when the auxiliary charging time period combination is overloaded, and select a target charging time period combination from the auxiliary charging time period combination according to the overload time period length. The second target combination determination unit is used to determine the power supply time length of the auxiliary charging time period combination when the load of the auxiliary charging time period combination is normal, and select the target charging time period combination from the auxiliary charging time period combination according to the power supply time length. The target time period determination unit is used to determine the target charging time period for each charging pile under the transformer based on the target charging time period combination.

8. An electronic device, characterized in that, The electronic device includes: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the control method of the charging pile according to any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that, when executed by a processor, implement the control method for the charging pile as described in any one of claims 1-6.

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