Charging pile, charging control method and charging control system

Abstract

The invention relates to a charging pile, a charging control method and a charging control system. The charging pile comprises at least one charging pile insertion gun interface module, and the charging pile insertion gun interface module is configured to allow a charging gun of an external charging pile to be connected to the charging pile through the charging pile insertion gun interface module, so that the external charging pile and the charging pile supply power to the to-be-charged equipment. By arranging the charging pile insertion gun interface module, the charging gun of the external charging pile can be connected with the charging pile through the charging pile insertion gun interface module, so that on the basis of the existing charging pile, a plurality of charging piles can jointly supply power to the to-be-charged equipment, and the existing power grid structure does not need to be subjected to large-scale transformation; and the charging speed of the to-be-charged equipment can be improved on the premise of reducing the construction cost.

Description

Technical Field

[0001] The present application relates to the technical field of charging piles, and particularly to a charging pile, a charging control method, and a charging control system. Background Art

[0002] With the development of new energy technologies, electric vehicles have gradually become popular, and the demand for charging infrastructure has been increasing day by day. Currently, the common charging facilities in the market are charging piles, but most of the power of charging piles is relatively low, making it difficult to meet the users' demand for fast charging.

[0003] In traditional solutions, in order to improve the charging speed, high-power charging piles are usually manufactured and existing low-power charging piles are gradually replaced with high-power charging piles to fundamentally improve the charging speed of electric vehicles.

[0004] However, the above solutions have great limitations. The construction cost of high-power charging piles is high, and replacing charging piles will lead to increased costs. In addition, the existing power grid structure needs to be transformed, which makes the application of high-power charging piles difficult. Currently, there is still a problem of low charging speed for electric vehicles. Summary of the Invention

[0005] Based on this, in view of the above technical problems, it is necessary to provide a charging pile, a charging control system, a charging control method, a device, a computer device, a computer-readable storage medium, and a computer program product that can improve the charging speed of electric vehicles.

[0006] In a first aspect, the present application provides a charging pile, which includes at least one charging gun interface module of the charging pile. The charging gun interface module of the charging pile is configured to: allow the charging gun of an external charging pile to be connected to the charging pile through the charging gun interface module of the charging pile, so that the external charging pile and the charging pile jointly supply power to the device to be charged.

[0007] In one embodiment, the charging gun interface module of the charging pile further includes a temperature monitoring device for monitoring the interface temperature of the charging gun interface module of the charging pile.

[0008] In this embodiment, considering that the charging gun interface module of the charging pile may have an abnormal temperature rise due to poor contact, excessive resistance, etc. when a large current passes through, there is a potential safety risk. Therefore, a temperature monitoring device is deployed inside the charging gun interface module of the charging pile to monitor the interface temperature in real time through the temperature monitoring device. Once an abnormal temperature is found, the control module can take timely measures to improve the safety and reliability of the charging pile. In one embodiment, the charging gun interface module of the charging pile is detachably arranged on the charging pile.

[0009] In this embodiment, considering that in actual use, the charging gun interface module of the charging pile is prone to wear and damage due to frequent plugging and unplugging, a detachable design is adopted. The staff does not need to disassemble or replace the entire charging pile. They only need to disassemble the damaged charging gun interface module of the charging pile for separate repair or replacement, which greatly shortens the repair time and reduces the repair cost. In addition, the staff can also flexibly adjust the number of charging gun interface modules of the charging pile according to the actual number of charging piles to be connected, improving the adaptability and convenience of use of the charging pile.

[0010] In one embodiment, the charging pile supplies power to the device to be charged in the form of alternating current.

[0011] In this embodiment, since the power transmitted and distributed in the power grid is mainly alternating current, and the charging pile supplies power in the form of alternating current, there is no need for complex AC-DC conversion equipment to convert the alternating current of the power grid into direct current and then output. It can directly utilize the existing infrastructure of the power grid, reducing the construction cost and technical difficulty of the charging pile, and also reducing the complexity of the internal circuit of the charging pile, improving the reliability and stability of the charging pile.

[0012] In a second aspect, the present application provides a charging control method, which is applied to a charging control system including a main charging pile and at least one slave charging pile. The main charging pile includes at least one charging gun interface module, and the charging guns of at least one slave charging pile are connected to the main charging pile through the charging gun interface module; the method includes:

[0013] In response to the operation of the charging gun accessing the charging gun interface module of the main charging pile, identify the identity of the device connected to the charging gun;

[0014] In the case where it is identified that the device connected to the charging gun is a slave charging pile, in response to the charging request of the device to be charged connected to the main charging pile, determine the charging power of the device to be charged;

[0015] Based on the charging power of the device to be charged, schedule the main charging pile and the slave charging pile to supply power to the device to be charged.

[0016] In one embodiment, the scheduling the main charging pile and the slave charging pile to supply power to the device to be charged based on the charging power of the device to be charged includes:

[0017] In the case where the charging power is less than or equal to the preset rated output power of the main charging pile, only schedule the main charging pile to supply power to the device to be charged at the charging power.

[0018] In this embodiment, when the charging power of the device to be charged is relatively low, the main charging pile can meet its charging needs alone, which enables the main charging pile to fully play its role within its capacity and reduces resource idleness. Compared with enabling the main and slave charging piles simultaneously, it can reduce the unnecessary operation time of the equipment, save the waiting time of the user, and shorten the overall charging time.

[0019] In one embodiment, scheduling the main charging pile and the slave charging pile to supply power to the device to be charged based on the charging power of the device to be charged includes:

[0020] When the charging power is greater than the preset rated output power of the main charging pile, schedule the main charging pile and the slave charging pile to jointly supply power to the device to be charged.

[0021] In this embodiment, by distributing the charging power of the device to be charged to the main charging pile and the slave charging pile, it is possible to effectively realize multiple charging piles jointly supplying power to the device to be charged, greatly improving the charging speed of the device to be charged and the charging efficiency.

[0022] In one embodiment, scheduling the main charging pile and the slave charging pile to jointly supply power to the device to be charged includes:

[0023] Determine the power difference between the charging power and the preset rated output power;

[0024] Schedule the main charging pile to supply power to the device to be charged at the preset rated output power and the slave charging pile at the power difference.

[0025] In this embodiment, considering that for devices to be charged with large power requirements, such as large electric buses or electric vehicles with fast charging, a single main charging pile may not be able to meet their power requirements. Therefore, through the collaborative work of the main and slave charging piles, the power of multiple charging piles can be integrated so that the total output power meets the requirements of the device to be charged, significantly shortening the charging time and increasing the charging speed.

[0026] In one embodiment, the method further includes:

[0027] Obtain the interface temperature of the charging gun interface module of the main charging pile;

[0028] When the interface temperature is greater than the preset temperature threshold, disconnect the connection between the main charging pile and the slave charging pile.

[0029] In this embodiment, considering that the overheating of the gun plug interface is likely to cause a decline in the performance of its insulating material, which may further lead to a short-circuit fault and even serious safety accidents such as fires, by monitoring the interface temperature of the gun plug interface module of the charging pile in real time and disconnecting the power transmission path in a timely manner when the temperature exceeds the preset temperature threshold, the charging safety and charging reliability can be effectively improved.

[0030] In one of the embodiments, the method further includes:

[0031] Obtaining the charging parameters of the main charging pile;

[0032] Based on the charging parameters, determining the charging state of the main charging pile;

[0033] In the case where the charging state of the main charging pile is abnormal, disconnecting the connection between the main charging pile and the slave charging pile.

[0034] In this embodiment, since an abnormal charging state means that there is a fault in the internal circuit of the main charging pile, such as a power converter fault or a control circuit imbalance. If the operation continues, it is very likely to cause damage to the device to be charged and the charging pile, and may also affect the stable operation of the power grid. Therefore, disconnecting the connection when detecting an abnormal charging state of the main charging pile according to the charging parameters of the charging pile can effectively reduce these potential risks and improve the safety and reliability of the charging pile.

[0035] In one of the embodiments, the method further includes:

[0036] In the case where the device connected to the charging gun is identified as a slave charging pile, determining the number of slave charging piles;

[0037] According to the number of slave charging piles, adjusting the upper limit of the output power of the main charging pile.

[0038] In this embodiment, dynamically adjusting the upper limit of the output power of the main charging pile according to the number of slave charging piles enables the output power of the main charging pile to match the current charging demand. When the number of slave charging piles increases, the overall power supply capacity of the system increases. At this time, increasing the upper limit of the output power of the main charging pile can make full use of the system power to meet the charging requirements of high-power devices to be charged and effectively improve the charging efficiency.

[0039] In a third aspect, the present application provides a charging control system, which includes a control module, a main charging pile and at least one slave charging pile connected to the control module. The main charging pile includes a charging gun interface module of the charging pile, and the charging guns of at least one slave charging pile are connected to the main charging pile through the charging gun interface module of the charging pile. The control module is configured to schedule the main charging pile and the slave charging piles based on the charging control method of any of the above items to supply power to the device to be charged connected to the main charging pile.

[0040] For the above charging pile, by setting the charging gun interface module of the charging pile, the charging gun of an external charging pile can be connected to the charging pile through the charging gun interface module. In this way, on the basis of the existing charging piles, multiple charging piles can supply power to the device to be charged, without the need for large-scale transformation of the existing power grid structure, and the charging speed of the device to be charged can be improved while reducing the construction cost. For the above charging control method, when the charging gun interface module of the main charging pile accesses a charging gun and the device connected to the charging gun is a slave charging pile, when the device to be charged requests power, the charging power of the device to be charged can be determined, and then based on the charging power of the device to be charged, the main charging pile and the slave charging piles can be scheduled to cooperate to supply power to the device to be charged. Different from the traditional solution that relies on high-power charging piles to improve the charging speed, the present application does not need to build a single high-power charging pile, but uses multiple charging piles to work in combination. By connecting multiple charging piles, the effect similar to that of a high-power charging pile can be achieved, and the charging speed of the device to be charged can be effectively improved. For the above charging control system, through the charging gun interface module of the main charging pile and the charging guns of the slave charging piles, multiple charging piles can be connected to charge the device to be charged connected to the main charging pile. Without using high-cost high-power charging piles, a relatively high charging power can also be achieved, reducing the construction cost of charging facilities and also achieving the technical effect of fast charging. Description of the Drawings

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following will briefly introduce the drawings required to be used in the description of the embodiments of the present application or related technologies. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0042] Figure 1 It is a schematic structural diagram of a charging pile in an embodiment;

[0043] Figure 2 It is a schematic structural diagram of a charging pile in another embodiment;

[0044] Figure 3Schematic flowchart of a charging control method in an embodiment;

[0045] Figure 4 Schematic flowchart of a charging control method in another embodiment;

[0046] Figure 5 Schematic flowchart of a charging control method in a detailed embodiment;

[0047] Figure 6 Application environment diagram of a charging control method in an embodiment;

[0048] Figure 7 Schematic structural diagram of a charging control system in an embodiment;

[0049] Figure 8 Structural block diagram of a charging device in an embodiment;

[0050] Figure 9 Internal structural diagram of a computer device in an embodiment. Detailed implementation manners

[0051] In order to make the objectives, technical solutions and advantages of the present application clearer and more understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs. The terms used in the specification of the present application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0053] It can be understood that the terms "first", "second", etc. used in the present application can be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, without departing from the scope of the present application, the first resistor can be called the second resistor, and similarly, the second resistor can be called the first resistor. Both the first resistor and the second resistor are resistors, but they are not the same resistor.

[0054] It can be understood that "at least one" means one or more, and "a plurality" means two or more. "At least part of an element" means part or all of the element.

[0055] As used herein, the singular forms "a", "an" and "the" may also include the plural forms unless the context clearly dictates otherwise. It should also be understood that the terms "comprising", "including" or "having", etc., specify the presence of the stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. At the same time, the term "and / or" used in this specification includes any and all combinations of the related listed items.

[0056] In one exemplary embodiment, as Figure 1 shown, a charging pile 100 is provided. The charging pile 100 includes at least one charging gun interface module 110 of the charging pile. The charging gun interface module 110 of the charging pile is configured to: allow the charging gun of an external charging pile to be connected to the charging pile through the charging gun interface module 110 of the charging pile, so that the external charging pile and the charging pile 100 supply power to the device to be charged jointly.

[0057] Specifically, the charging pile 100 is used to receive the power that can be transmitted by an external charging pile through a specific connection method, and integrate its own power with the power of the external charging pile for charging the device to be charged. The charging gun interface module 110 of the charging pile is a module on the charging pile 100 for connecting the charging gun of an external charging pile. It can not only achieve the physical connection between charging piles, but also realize the power transmission. Therefore, the charging gun interface module 110 of the charging pile can be made of a highly conductive material to support high-power power transmission. At the same time, it can also have the functions of preventing misinsertion and short circuit, making the power transmission process safer and more reliable. The charging gun is a tool for connecting the charging pile and the device to be charged. For example, one end of the charging gun is connected to the charging pile, and the other end is inserted into the charging interface of the device to be charged. In this application, in addition to being connected to the device to be charged, the charging gun of the external charging pile can also be connected to the charging pile 100 through the charging gun interface module 110 of the charging pile, so as to incorporate the power of the external charging pile into the charging pile 100. The devices to be charged include but are not limited to electric bicycles, electric vehicles, etc. In this embodiment and the following embodiments, the device to be charged is taken as an electric vehicle as an example for illustration.

[0058] Exemplarily, the user can insert the charging gun of an external charging pile into the charging gun interface module 110 of the charging pile 100, thereby realizing the physical connection between multiple charging piles, and at the same time establishing the electrical connection inside multiple charging piles. Further, after the charging pile 100 recognizes that the charging gun interface module 110 has access to a charging gun, it will authenticate the device connected to the charging gun. For example, it will authenticate through the identification code. When it recognizes that the charging gun is connected to an external charging pile, the circuit is turned on, and the electric energy of the external charging pile can be transmitted to the charging pile 100 through the charging gun via the charging gun interface module 110. At this time, the charging pile 100 will integrate its own output power and the output power of the external charging pile connected through the interface 110, and adjust its own output power limit. Finally, the output power of the charging pile 100 and the output power of the external charging pile can be combined to supply power to the electric vehicle.

[0059] In addition, when multiple charging piles supply power to an electric vehicle together, the charging pile 100 can be preferentially used for power supply. If the output power of the charging pile 100 cannot meet the power consumption requirements of the electric vehicle, it will jointly supply power with the external charging pile. Moreover, it is also possible to monitor in real time information such as the output power of each charging pile, the charging status of the device to be charged, and the load data of the power grid, and based on the above data, adjust the output power distribution of each charging pile in real time to achieve the best charging effect.

[0060] For the above-mentioned charging pile, by setting the charging gun interface module, the charging gun of the external charging pile can be connected to the charging pile through the charging gun interface module. In this way, on the basis of the existing charging piles, multiple charging piles can supply power to the device to be charged, without the need for large-scale transformation of the existing power grid structure, and the charging speed of the device to be charged can be improved while reducing the construction cost.

[0061] In one embodiment, as Figure 2 shown, the charging gun interface module 110 further includes a temperature monitoring device 120 for monitoring the interface temperature of the charging gun interface module 110.

[0062] Among them, when the charging gun interface module 110 transmits electric energy, a certain amount of resistive heat will be generated when the current passes through. The temperature monitoring device 120 can be arranged inside the charging gun interface module 110 to monitor the temperature of the connection point inside the charging gun interface module 110 with the charging gun, that is, the interface temperature. The temperature monitoring device 120 includes but is not limited to thermocouple sensors, thermistor sensors, etc.

[0063] Exemplarily, developers can pre-deploy a temperature monitoring device 120 inside the charging gun interface module 110 of the charging pile, for example, by means of embedded installation. When current passes through the charging gun and the charging gun interface module 110 of the charging pile, the temperature monitoring device 120 continuously collects the interface temperature of the charging gun interface module 110 of the charging pile and outputs the measured temperature value in the form of an electrical signal or a digital signal, for example, sending it to the control module inside the charging pile 110 or to the remote control module in the cloud of the charging pile 110 for subsequent temperature data analysis and processing.

[0064] Furthermore, when the temperature monitoring device 120 sends the interface temperature to the control module or the remote control module receives the interface temperature, it can compare and analyze it with a pre-set temperature threshold. If the interface temperature exceeds the pre-set temperature threshold, it means that there may be a safety risk at this time. The control module will quickly activate the corresponding protection mechanism, such as immediately cutting off the connection between the charging gun interface module 110 of the charging pile and the charging gun. In addition, the control module can also combine machine learning algorithms and historical interface temperatures to give early warnings about abnormal interface temperature situations, etc. And when the control module determines that the interface temperature is abnormal, it can also send warning messages to the staff and users. The staff can understand the temperature conditions of each charging gun interface module 110 of the charging pile in real time, so as to give early warnings about temperature abnormalities and immediately cut off the connection between the charging gun interface module 110 of the charging pile and the charging gun when the temperature is abnormal. In addition, according to the interface temperature, the control module can also optimize the current transmission strategy between charging piles in real time. For example, when the interface temperature approaches or reaches the safety threshold, the transmission current between charging piles is appropriately reduced to reduce heat generation.

[0065] In this embodiment, considering that the charging gun interface module of the charging pile may cause abnormal temperature rise due to reasons such as poor contact and excessive resistance when passing a large current, there is a potential safety risk. Therefore, a temperature monitoring device is deployed inside the charging gun interface module of the charging pile. By means of the temperature monitoring device, the interface temperature is monitored in real time. Once abnormal temperature is found, the control module can take timely measures to improve the safety and reliability of the charging pile.

[0066] In one embodiment, the charging gun interface module 110 of the charging pile is detachably arranged on the charging pile 100.

[0067] Among them, the detachable method means that the charging gun interface module 110 and the charging pile 100 are not fixedly connected, but can be separated and reinstalled without damaging the main body of the device, such as plug-in connection, snap connection, etc.

[0068] Exemplarily, when installing the charging gun interface module 110 of the charging pile, the staff aligns the charging gun interface module 110 of the charging pile with the corresponding installation position on the charging pile 100 according to the pre-designed connection method, and then through operations such as plugging and unplugging, and buckling with buckles, the charging gun interface module 110 of the charging pile is firmly installed on the charging pile. Since one charging pile 100 can be connected to multiple external charging piles, the staff can install or disassemble a specific number of charging gun interface modules 110 on the charging pile 100 according to the number of charging piles to be connected. For example, when it is necessary to repair, replace the charging gun interface or remove it from the charging pile for other reasons, the staff can unlock the connection structure by opening the buckle, pulling out the plug and other operation steps, so as to disassemble the charging gun interface from the charging pile.

[0069] In this embodiment, considering that in actual use, the charging gun interface module of the charging pile is prone to problems such as wear and damage due to frequent plugging and unplugging, a detachable design is adopted. The staff does not need to disassemble or replace the entire charging pile, and only needs to disassemble the damaged charging gun interface module for separate repair or replacement, which greatly shortens the repair time and reduces the repair cost. In addition, the staff can also flexibly adjust the number of charging gun interface modules of the charging pile according to the actual number of charging piles to be connected, improving the adaptability and use convenience of the charging pile.

[0070] In one embodiment, the charging pile 100 supplies power to the device to be charged in the form of alternating current.

[0071] Among them, the direction of the alternating current changes periodically with time. For example, household electricity is generally alternating current. In the charging pile 100, by connecting the charging gun of the charging pile 100 to the charging interface of the electric vehicle, the charging pile 100 transmits electrical energy to the electric vehicle in the form of alternating current.

[0072] Exemplarily, the charging pile 100 can be connected to the external power grid through a power cable to access alternating current. The alternating current in the power grid is usually high-voltage alternating current, which needs to be stepped down by a transformer to reduce the voltage to the standard voltage suitable for the charging pile 100 to use. After the alternating current enters the charging pile 100, it passes through a series of circuit modules in the charging pile 100 and is transmitted to the electric vehicle through the charging gun. If the charging method of the battery of the electric vehicle is direct current power supply, the charging control system of the electric vehicle can convert the alternating current transmitted by the charging pile 100 into direct current, and then charge the battery.

[0073] In some other embodiments, the charging pile 100 can also charge the electric vehicle in the form of direct current.

[0074] In this embodiment, since the electricity transmitted and distributed in the power grid is mainly alternating current, the charging pile supplies power in the form of alternating current, without the need for complex AC-DC conversion equipment to convert the alternating current of the power grid into direct current and then output. It can directly utilize the existing infrastructure of the power grid, reducing the construction cost and technical difficulty of the charging pile, and also reducing the complexity of the internal circuit of the charging pile, improving the reliability and stability of the charging pile.

[0075] In an exemplary embodiment, as Figure 3 shown, a charging control method is provided, which is applied to a charging control system including a main charging pile and at least one slave charging pile. The main charging pile includes at least one charging gun interface module of the charging pile. The charging guns of at least one slave charging pile are connected to the main charging pile through the charging gun interface module of the charging pile. The method includes the following steps:

[0076] S100, in response to the operation of the charging gun accessing the charging gun interface module of the main charging pile, identify the identity of the device connected to the charging gun.

[0077] Exemplarily, when the charging gun is inserted into the charging gun interface module of the main charging pile, the main charging pile needs to identify the identity of the device connected to the charging gun. For example, the main charging pile sends a specific query instruction to the device connected to the charging gun, requesting the other party to return the device identity information, such as the identity recognition code. Devices such as slave charging piles can be designed to have a built-in identity recognition code as the information for uniquely identifying their own identities. The identity recognition code can be the device model, serial number, manufacturer code, etc. The device connected to the charging gun feeds back the identity recognition code to the main charging pile. After receiving the data, the main charging pile can decode the identity recognition code according to the preset parsing rules, so as to identify whether the device connected to the charging gun is a slave charging pile.

[0078] S200, in the case where the device connected to the charging gun is identified as a slave charging pile, in response to the charging request of the device to be charged connected to the main charging pile, determine the charging power of the device to be charged.

[0079] After the main charging pile identifies that the connected device is a slave charging pile, it will continuously monitor whether the device to be charged issues a power consumption request. When the device to be charged (such as an electric vehicle) accesses the charging control system, it will send a power consumption request to the main charging pile. After the main charging pile establishes a connection with the device to be charged, it can receive the charging power of the device to be charged from the device to be charged.

[0080] S300, based on the charging power of the device to be charged, dispatch the main charging pile and the slave charging piles to supply power to the device to be charged.

[0081] After receiving the power consumption request, the main charging pile formulates a power allocation strategy based on the requirements of the electric vehicle and the available power of itself and the slave charging piles. For example, if the electric vehicle needs a charging power of 100 kW, the main charging pile can output 60 kW by itself, and the slave charging pile can output 50 kW. The main charging pile can adjust its own output power to 60 kW and at the same time control the slave charging pile to output 40 kW to meet the charging requirements of the electric vehicle. After determining the power distribution plan, the main charging pile can send a power adjustment instruction to the slave charging pile through the communication line. After receiving the instruction, the slave charging pile adjusts its own power output circuit to output electric energy with the specified power. At the same time, the main charging pile also adjusts its own power output. The electric energy output by both is combined in the power integration circuit of the main charging pile and then transmitted to the device to be charged through the charging gun of the main charging pile.

[0082] It should be noted that the charging gun interface module of the main charging pile can be consistent with the charging interface of the electric vehicle, so that the charging gun of the slave charging pile can not only be connected to the charging interface of the electric vehicle, but also be connected to the charging gun interface module of the charging pile. In addition, the charging gun of the main charging pile can be compatible with multiple vehicle models to meet the charging requirements of different users.

[0083] In the above charging control method, when the charging gun interface module of the main charging pile is connected to the charging gun and the device connected to the charging gun is a slave charging pile, when the device to be charged requests power consumption, the charging power of the device to be charged can be determined, and then based on the charging power of the device to be charged, the main charging pile and the slave charging pile are coordinated to supply power to the device to be charged. Different from the traditional solution that relies on high-power charging piles to improve the charging speed, this application does not need to build a single high-power charging pile, but uses multiple charging piles to work together. By connecting multiple charging piles, the effect similar to that of a high-power charging pile can be achieved, which can effectively improve the charging speed of the device to be charged.

[0084] In one embodiment, as Figure 4 shown, S300 includes:

[0085] S310, when the charging power is less than or equal to the preset rated output power of the main charging pile, only dispatch the main charging pile to supply power to the device to be charged at the charging power.

[0086] Continuing with the above embodiments, the main charging pile compares the charging power of the device to be charged with its preset rated output power. The preset rated output power is determined during the design and manufacture of the main charging pile and is the maximum power value that it can continuously and stably output. For example, the rated output power of a certain main charging pile is 100 kilowatts. Assume that the charging power requested by the device to be charged is 60 kilowatts. Since 60 kilowatts is less than the rated output power of 100 kilowatts of the main charging pile, the power distribution strategy adopted in this embodiment is to preferentially use the main charging pile for power supply. According to this strategy, the main charging pile will directly determine 60 kilowatts of charging power as its output power because the power output capacity of the main charging pile itself is sufficient to meet the needs of the device to be charged and there is no need for the slave charging pile to participate in power supply. Therefore, the output power of the slave charging pile is determined to be zero, that is, at this time, only the main charging pile needs to be dispatched to supply power to the device to be charged at the charging power.

[0087] In this embodiment, when the charging power of the device to be charged is low, the main charging pile can separately meet its charging needs, which enables the main charging pile to fully play its role within its capacity, reducing resource idleness. Compared with simultaneously enabling the main and slave charging piles, it can reduce unnecessary device operation time, save the user's waiting time, and shorten the overall charging time.

[0088] In one embodiment, as Figure 4 shown, S300 includes:

[0089] S320, in the case where the charging power is greater than the preset rated output power of the main charging pile, dispatch the main charging pile and the slave charging pile to jointly supply power to the device to be charged.

[0090] Continuing with the above embodiments, before the main charging pile performs power distribution, it needs to first determine the actual power output capabilities of itself and the slave charging pile. For example, the rated output powers of a certain main charging pile and the slave charging pile are both 60 kilowatts. This indicates that it is difficult to supply power to the device to be charged only relying on the main charging pile at this time. Therefore, it is necessary to further formulate a power distribution strategy based on the charging power of the electric vehicle and the actual power output capabilities of the main and slave charging piles.

[0091] The way to specify the power distribution strategy can be proportional distribution. For example, if only one slave charging pile is connected to the main charging pile, the rated output powers of the main charging pile and the slave charging pile are both 60 kilowatts, and the charging power of the electric vehicle is 80 kilowatts, then the output power of the main charging pile is 40 kilowatts, and the output power of the slave charging pile is 40 kilowatts.

[0092] In some other embodiments, priorities can also be set for the main charging pile and the slave charging pile. For example, the main charging pile is preferentially used to charge the electric vehicle. If the rated output power of both the main charging pile and the slave charging pile is 60 kW and the charging power of the electric vehicle is 80 kW, then the output power of the main charging pile is 60 kW and the output power of the slave charging pile is 20 kW.

[0093] After determining the first output power and the second output power, the control module will send control signals to the power output control module of the main charging pile and the power output control module of the slave charging pile respectively through the communication line. After receiving the control signals, the power output control modules of the main charging pile and the slave charging pile control the output current and voltage, and the output power of the slave charging pile is merged into the main charging pile to jointly supply power to the device to be charged.

[0094] In addition, during the process of the main and slave charging piles supplying power to the device to be charged at a set power, the control module can continuously and real-time monitor the charging status of the device to be charged, such as the battery voltage and current changes, as well as the operating parameters of the main and slave charging piles themselves, such as temperature and power output stability. For example, if it is found that the battery voltage of the device to be charged rises too fast, it may mean that the charging power is too high, and the output power of the main and slave charging piles can be recalculated and adjusted.

[0095] In this embodiment, by distributing the charging power of the device to be charged to the main charging pile and the slave charging pile, multiple charging piles can be effectively combined to supply power to the device to be charged, greatly improving the charging speed of the device to be charged and the charging efficiency.

[0096] In one embodiment, as Figure 5 shown, S320 includes:

[0097] S321, determining the power difference between the charging power and the preset rated output power, and scheduling the main charging pile to supply power to the device to be charged at the preset rated output power and the slave charging pile at the power difference.

[0098] Exemplarily, when the main charging pile receives a power consumption request, the control module will compare the charging power of the device to be charged with its own preset rated output power. The preset rated output power is determined during the design and manufacture of the main charging pile and is the maximum power value that it can continuously and stably output. For example, the rated output power of a certain main charging pile is 60 kW.

[0099] Suppose the charging power requested by the device to be charged is 100 kW. Since 100 kW is greater than the rated output power of the main charging pile, which is 60 kW, the power difference is 40 kW. Considering that there will be losses in the line during power supply, and the losses increase exponentially with the increase of current and decrease exponentially with the decrease of current. Therefore, the power distribution strategy adopted in this embodiment is to give priority to using the main charging pile for power supply. The electric energy insufficiently supplied by the main charging pile is supplied by the slave charging piles. Therefore, at this time, the output power of the main charging pile is adjusted to the rated output power of 60 kW, and the output power of the slave charging pile is 40 kW. If there are multiple slave charging piles, the remaining 40 kW can be evenly distributed to the slave charging piles. For example, if there are two slave charging piles, the second output power of both slave charging piles is 20 kW.

[0100] In this embodiment, considering that for devices to be charged with large power requirements, such as large electric buses or electric vehicles with fast charging, a single main charging pile may not be able to meet their power requirements. Therefore, through the collaborative work of the main and slave charging piles, the power of multiple charging piles can be integrated, so that the total output power meets the requirements of the device to be charged, significantly shortening the charging time and improving the charging speed.

[0101] In one embodiment, as Figure 5 shown, the method further includes:

[0102] S400, obtain the interface temperature of the charging gun interface module of the main charging pile. In the case where the interface temperature is greater than the preset temperature threshold, disconnect the connection between the main charging pile and the slave charging piles.

[0103] Among them, the preset temperature threshold is determined according to factors such as the material characteristics, heat dissipation ability, and safe operation standards of the charging gun interface module of the charging pile, and is set to 80 °C, for example.

[0104] Continuing with the above embodiment, the main charging pile continuously monitors the interface temperature of its charging gun interface module, which can be achieved by a temperature monitoring device installed near the interface, such as a thermistor sensor. When the temperature monitoring device detects the interface temperature, it transmits the interface temperature to the control module of the main charging pile. The control module compares the real-time obtained interface temperature with the preset temperature threshold. If the interface temperature is greater than the threshold, it indicates that there may be an overheating risk in the charging gun interface module of the charging pile, such as excessive contact resistance causing heat generation. At this time, the control module of the main charging pile will immediately issue an instruction to disconnect the connection between the main charging pile and the slave charging piles, thereby cutting off the power transmission path between the main and slave charging piles.

[0105] In this embodiment, considering that the charging gun interface overheats easily, which can cause the performance of its insulating material to decline, further leading to short - circuit faults and even serious safety accidents such as fires, by real - time monitoring the interface temperature of the charging gun interface module of the charging pile and disconnecting the power transmission path in a timely manner when it exceeds the preset temperature threshold, the charging safety and charging reliability can be effectively improved.

[0106] In one embodiment, as Figure 5 shown, the method further includes:

[0107] S500, obtain the charging parameters of the main charging pile, determine the charging status of the main charging pile based on the charging parameters, and disconnect the connection between the main charging pile and the slave charging pile when the charging status of the main charging pile is abnormal.

[0108] Specifically, the control module of the main charging pile will collect multiple charging parameters of itself in real - time. The charging parameters include but are not limited to charging current, charging voltage, and power factor, etc. For example, a current transformer can convert a large current into a small current that is convenient for measurement in proportion to accurately measure the charging current, and the charging voltage is measured through a voltage sensor.

[0109] Furthermore, the control module of the main charging pile can use a preset specific algorithm to determine its own charging status based on the collected charging parameters. For example, if the charging current drops or rises sharply within a short period of time, deviating from the normal operating range, or the power factor deviates too much from the standard value, it is determined that the charging status of the main charging pile is abnormal. In addition, it is also possible to judge whether the main charging pile has abnormalities such as short - circuit or overload according to the charging parameters. Once it is detected that the charging status of the main charging pile is abnormal, the control module of the main charging pile will issue an instruction to disconnect its connection with the slave charging pile by controlling switch elements such as relays, thereby disconnecting the power transmission path. When necessary, the connection between the main charging pile and the device to be charged can also be disconnected.

[0110] In this embodiment, since an abnormal charging status means that there are faults in the internal circuit of the main charging pile, such as power converter faults and control circuit malfunctions. If the operation continues, it is very likely to cause damage to the device to be charged and the charging pile, and may also affect the stable operation of the power grid. Therefore, disconnecting the connection when detecting an abnormal charging status of the main charging pile according to the charging parameters of the charging pile can effectively reduce these potential risks and improve the safety and reliability of the charging pile.

[0111] In one embodiment, as Figure 5 shown, the method further includes:

[0112] S600, when it is identified that the device connected to the charging gun is a slave charging pile, determine the number of slave charging piles, and adjust the upper limit of the output power of the main charging pile according to the number of slave charging piles.

[0113] It can be understood that the output power of the main charging pile has an upper limit. When the number of connected slave charging piles is larger, it means that the current charging power of the electric vehicle may be greater, and the power required to pass through the main charging pile is larger. Therefore, in order to meet the high-power charging demand, it is necessary to adjust the upper limit of the output power of the main charging pile. Exemplarily, after the main charging pile identifies that the connected device is a slave charging pile, it is necessary to first determine the number of slave charging piles. For example, the main charging pile can request the identity recognition code from each slave charging pile. By counting the number of received identity recognition codes, the main charging pile can determine the number of slave charging piles. Further, the upper limit of the output power of the main charging pile can be adjusted to the sum of the rated powers of the main charging pile and all slave charging piles.

[0114] In this embodiment, the upper limit of the output power of the main charging pile is dynamically adjusted according to the number of slave charging piles, so that the output power of the main charging pile can match the current charging demand. When the number of slave charging piles increases, the overall power supply capacity of the system is enhanced. At this time, by increasing the upper limit of the output power of the main charging pile, the system power can be fully utilized to meet the charging requirements of high-power demand devices to be charged, effectively improving the charging efficiency.

[0115] To make a clearer description of the charging control method provided in this application, the following combines a detailed embodiment and the attached Figure 5 are explained. The detailed embodiment includes the following steps:

[0116] S100, in response to the operation of the charging gun accessing the charging gun interface module of the main charging pile, identify the identity of the device connected to the charging gun.

[0117] S200, in the case where the device connected to the charging gun is identified as a slave charging pile, in response to the charging request of the device to be charged connected to the main charging pile, determine the charging power of the device to be charged

[0118] S310, in the case where the charging power is less than or equal to the preset rated output power of the main charging pile, only dispatch the main charging pile to supply power to the device to be charged at the charging power.

[0119] S321, in the case where the charging power is greater than the preset rated output power of the main charging pile, determine the power difference between the charging power and the preset rated output power, and dispatch the main charging pile to supply power to the device to be charged at the preset rated output power and the slave charging pile to supply power at the power difference.

[0120] S400, obtain the interface temperature of the charging gun interface module of the main charging pile, and disconnect the connection between the main charging pile and the slave charging pile in the case where the interface temperature is greater than the preset temperature threshold.

[0121] S500. Obtain the charging parameters of the main charging pile, determine the charging status of the main charging pile based on the charging parameters, and disconnect the connection between the main charging pile and the slave charging pile when the charging status of the main charging pile is abnormal.

[0122] S600. When it is recognized that the device connected to the charging gun is a slave charging pile, determine the number of slave charging piles, and adjust the upper limit of the output power of the main charging pile according to the number of slave charging piles.

[0123] It should be noted that the above charging control method can be applied to the application scenario shown in the appendix Figure 6 . In the application scenario, the structures of the main charging pile and the slave charging piles can be the same. Multiple charging piles are connected in parallel to the charging stack or the photovoltaic-storage flexible energy station. The charging stack or the photovoltaic-storage flexible energy station is connected to the alternating current (AC) of the power grid, and converts the alternating current (AC) into direct current (DC) and sends it into the charging piles. Each charging pile has at least one charging gun interface module. The charging gun of the slave charging pile is connected to the charging gun interface module of the main charging pile, and the charging gun of the main charging pile is connected to the device to be charged. Figure 6 In the figure, it is an electric vehicle.

[0124] In one embodiment, as shown in Figure 7 , a charging control system 400 is provided. The charging control system 400 includes a control module 410, a main charging pile 420 connected to the control module 410, and at least one slave charging pile 430. The main charging pile 420 includes a charging gun interface module 421. The charging guns of at least one slave charging pile 430 are connected to the main charging pile through the charging gun interface module 420. The control module 410 is configured to schedule the main charging pile and the slave charging piles based on the charging control method in any one of the above charging control method embodiments to supply power to the device to be charged connected to the main charging pile 410.

[0125] It can be understood that the implementation solution provided by this charging control system to solve the problem is similar to the implementation solution recorded in the above method. Therefore, the specific limitations in one or more of the following charging control system embodiments can refer to the limitations on the charging control method in the above text, and will not be repeated here.

[0126] The above charging control system can connect multiple charging piles through the charging gun interface module of the main charging pile and the charging guns of the slave charging piles to charge the device to be charged connected to the main charging pile. Without using high-cost high-power charging piles, it can also achieve a relatively high charging power, reduce the construction cost of charging facilities, and achieve the technical effect of fast charging.

[0127] It should be understood that although the steps in the flowcharts involved in the above-described embodiments are sequentially shown according to the indication of the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless there is a clear description in this article, the execution of these steps has no strict order limit, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-described embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be executed alternately or in turn with at least a part of other steps or steps or stages in other steps.

[0128] Based on the same inventive concept, an embodiment of the present application also provides a charging device for implementing the above-mentioned charging control method. The solution provided by this device to solve the problem is similar to the solution described in the above method. Therefore, the specific limitations in one or more embodiments of the following charging devices can refer to the limitations on the charging control method in the above text, and will not be repeated here.

[0129] In an exemplary embodiment, as Figure 8 shown, a charging device 500 is provided, which is applied to the above charging control system and includes: an identity recognition module 510, a data acquisition module 520, and a power supply module 530, where:

[0130] The identity recognition module 510 is configured to recognize the identity of the device connected to the charging gun in response to an operation of the charging gun accessing the charging gun interface module of the main charging pile.

[0131] The data acquisition module 520 is configured to determine the charging power of the device to be charged in response to a charging request of the device to be charged connected to the main charging pile when it is recognized that the device connected to the charging gun is a slave charging pile.

[0132] The power supply module 530 is configured to schedule the main charging pile and the slave charging pile to supply power to the device to be charged based on the charging power of the device to be charged.

[0133] In an exemplary embodiment, the power supply module 530 is further configured to, when the charging power is less than or equal to the preset rated output power of the main charging pile, only schedule the main charging pile to supply power to the device to be charged at the charging power.

[0134] In an exemplary embodiment, the power supply module 530 is further configured to, when the charging power is greater than the preset rated output power of the main charging pile, schedule the main charging pile and the slave charging pile to jointly supply power to the device to be charged.

[0135] In an exemplary embodiment, the power supply module 530 is further configured to determine the power difference between the charging power and the preset rated output power, and schedule the main charging pile to supply power to the device to be charged jointly with the slave charging pile at the preset rated output power and the power difference of the slave charging pile.

[0136] In an exemplary embodiment, the charging device 500 acquires the interface temperature of the charging gun interface module of the main charging pile, and disconnects the connection between the main charging pile and the slave charging pile when the interface temperature is greater than the preset temperature threshold.

[0137] In an exemplary embodiment, the charging device 500 is further configured to acquire the charging parameters of the main charging pile, determine the charging state of the main charging pile based on the charging parameters, and disconnect the connection between the main charging pile and the slave charging pile when the charging state of the main charging pile is abnormal.

[0138] In an exemplary embodiment, the charging device 500 is further configured to determine the number of slave charging piles when identifying that the device connected to the charging gun is a slave charging pile, and adjust the upper limit of the output power of the main charging pile according to the number of slave charging piles.

[0139] Each module in the above charging device can be implemented in whole or in part by software, hardware, and their combination. The above modules can be embedded in the processor of the computer device in hardware form or be independent of it, or can be stored in the memory of the computer device in software form, so as to facilitate the processor to call and execute the operations corresponding to the above respective modules.

[0140] In an exemplary embodiment, a computer device is provided. The computer device can be a server, and its internal structure diagram can be as Figure 9 shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, abbreviated as I / O), and a communication interface. Among them, the processor, the memory, and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store data such as the charging parameters of the main charging pile. The input / output interface of the computer device is used to exchange information between the processor and external devices. The communication interface of the computer device is used to communicate with external terminals through a network connection. When the computer program is executed by the processor, it implements a charging control method.

[0141] Those skilled in the art can understand that Figure 9 The structure shown in Figure 9 is only a block diagram of some structures related to the solution of this application, and does not constitute a limitation on the computer device to which the solution of this application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine some components, or have a different component layout.

[0142] In an exemplary embodiment, a computer device is provided, including a memory and a processor. A computer program is stored in the memory, and when the processor executes the computer program, the steps in the above-mentioned embodiment of the charging control method are implemented.

[0143] In an embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above-mentioned embodiment of the charging control method are implemented.

[0144] In an embodiment, a computer program product is provided, including a computer program. When the computer program is executed by a processor, the steps in the above-mentioned embodiment of the charging control method are implemented.

[0145] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use, and processing of relevant data need to comply with relevant regulations.

[0146] Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above methods. Among them, any reference to a memory, database, or other medium used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc. The databases involved in the embodiments provided in this application can include at least one of relational databases and non-relational databases. Non-relational databases can include distributed databases based on blockchain, etc., without limitation. The processors involved in the embodiments provided in this application can be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, data processing logics based on quantum computing, artificial intelligence (AI) processors, etc., without limitation.

[0147] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this application.

[0148] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the patent scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims

1. A charging pile, characterized in that: The charging pile includes at least one charging pile gun interface module, which is configured to allow a charging gun of an external charging pile to be connected to the charging pile through the charging pile gun interface module, so that the external charging pile and the charging pile jointly supply power to the device to be charged.

2. The charging pile according to claim 1, characterized in that: The charging pile gun interface module also includes a temperature monitoring device for monitoring the interface temperature of the charging pile gun interface module.

3. The charging pile according to claim 1, characterized in that: The charging pile gun interface module is detachably arranged on the charging pile.

4. The charging pile according to claim 1, characterized in that: The charging pile supplies power to the device to be charged in the form of alternating current.

5. A charging control method, characterized in that: The method is applied to a charging control system including a master charging pile and at least one slave charging pile, wherein the master charging pile includes at least one charging pile gun plug interface module, and at least one charging gun of the slave charging pile is connected to the master charging pile through the charging pile gun plug interface module; the method includes: In response to the operation of connecting the charging gun to the charging pile plug-in interface module of the main charging pile, identifying the identity of the device connected to the charging gun; When it is identified that the device connected to the charging gun is a slave charging pile, in response to a charging request of the device to be charged connected to the master charging pile, determining the charging power of the device to be charged; Based on the charging power of the device to be charged, the main charging pile and the slave charging pile are scheduled to supply power to the device to be charged.

6. The method according to claim 5, characterized in that The step of scheduling the master charging pile and the slave charging pile based on the charging power of the device to be charged to supply power to the device to be charged includes: When the charging power is less than or equal to the preset rated output power of the main charging pile, only the main charging pile is scheduled to supply power to the device to be charged with the charging power.

7. The method according to claim 5, characterized in that The step of scheduling the master charging pile and the slave charging pile based on the charging power of the device to be charged to supply power to the device to be charged includes: When the charging power is greater than the preset rated output power of the master charging pile, the master charging pile and the slave charging pile are scheduled to jointly supply power to the device to be charged.

8. The method according to claim 7, characterized in that Scheduling the master charging pile and the slave charging pile to jointly supply power to the device to be charged includes: Determining a power difference between the charging power and the preset rated output power; The master charging pile is scheduled to supply power to the device to be charged at a preset rated output power and the slave charging pile is scheduled to supply power to the device to be charged at the power difference.

9. The method according to any one of claims 5 to 8, characterized in that: The method further comprises: Get the interface temperature of the charging pile gun interface module of the main charging pile; When the interface temperature is greater than a preset temperature threshold, the connection between the master charging pile and the slave charging pile is disconnected.

10. The method according to any one of claims 5 to 8, characterized in that: The method further comprises: Get the charging parameters of the main charging pile; Based on the charging parameters, determining the charging state of the main charging pile; When the charging state of the master charging pile is abnormal, the connection between the master charging pile and the slave charging pile is disconnected.

11. The method according to any one of claims 5 to 8, characterized in that: The method further comprises: In the case where it is identified that the device connected to the charging gun is a slave charging pile, determining the number of the slave charging piles; According to the number of the slave charging piles, the output power upper limit of the master charging pile is adjusted.

12. A charging control system, characterized in that: The charging control system includes a control module, and a main charging pile and at least one slave charging pile connected to the control module, the main charging pile includes a charging pile gun interface module, and at least one charging gun of the slave charging pile is connected to the main charging pile through the charging pile gun interface module, and the control module is configured to schedule the main charging pile and the slave charging pile based on the charging control method of any one of claims 5 to 11 to power the device to be charged connected to the main charging pile.

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