European standard multi-gun parallel charging method and system, electric vehicle, charging pile and device

Abstract

The invention relates to the technical field of charging, and discloses a European standard multi-gun parallel charging method and system, an electric vehicle, a charging pile and a device. The method comprises the steps that charging parameter information is sent to the charging pile through an electric product, and according to the charging parameter information and a preset voltage fluctuation detection instruction, the electric product is charged through the charging pile; and whether the first charging gun and the second charging gun charge the electric product at the same time or not is judged, and when the first charging gun and the second charging gun charge the electric product at the same time, the charging pile controls the first charging gun and the second charging gun to charge the electric product. Therefore, the charging efficiency can be improved based on double-gun charging, the insulation detection strategy is dynamically adjusted, the insulation detection accuracy of double-gun charging is improved, the safety and operation convenience of double-gun charging are improved, and the charging experience of a user is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of charging, and in particular to a European standard multi-gun parallel charging method and system, an electric vehicle, a charging pile, and a device. Background Art

[0002] Reducing fuel consumption and thus reducing the user's usage cost have become the key for construction machinery enterprises to improve the core competitiveness of their products and achieve sustainable development. Currently, major domestic construction machinery enterprises are concentrating on the electrification track, and the electrification of the industry is developing rapidly.

[0003] The characteristics of electric construction machinery are large power consumption, long continuous operation time, and large required battery capacity. How to quickly charge has become an urgent problem in the industry. Currently, most charging piles on the market (especially European standard charging piles) only support the function of single-gun charging, and the charging efficiency is low. Therefore, it is particularly important to propose a technical solution that can improve the charging efficiency. Summary of the Invention

[0004] The present invention provides a European standard multi-gun parallel charging method and system, an electric vehicle, a charging pile, and a device, which can help improve the charging efficiency.

[0005] To solve the above technical problems, in the first aspect of the present invention, a European standard multi-gun parallel charging method is disclosed. The method is applied to a European standard multi-gun parallel charging system, which includes a charging pile and an electric product. The charging pile includes at least a first charging gun and a second charging gun. The method includes:

[0006] The electric product sends charging parameter information to the charging pile;

[0007] The charging pile determines whether the first charging gun and the second charging gun charge the electric product simultaneously according to the charging parameter information and a preset voltage fluctuation detection instruction;

[0008] When the first charging gun and the second charging gun charge the electric product simultaneously, the charging pile controls the first charging gun and the second charging gun to charge the electric product.

[0009] As an optional implementation manner, in the first aspect of the present invention, the charging parameter information includes first charging parameter information corresponding to the first charging gun and second charging parameter information corresponding to the second charging gun;

[0010] The charging pile determines whether the first charging gun and the second charging gun charge the electric product simultaneously according to the charging parameter information and a preset voltage fluctuation detection instruction, including:

[0011] The charging pile determines the difference in charging parameter information between the first charging parameter information and the second charging parameter information, and determines whether the difference in charging parameter information is less than a preset threshold of the difference in charging parameter information;

[0012] When the difference in charging parameter information is less than the threshold of the difference in charging parameter information, the charging pile is triggered to execute the operation of controlling the first charging gun and the second charging gun to charge the electric product;

[0013] During the process of the first charging gun and the second charging gun charging the electric product, the charging pile determines whether the first charging gun and the second charging gun charge the electric product simultaneously according to a preset voltage fluctuation detection instruction.

[0014] As an optional implementation manner, in the first aspect of the present invention, during the process of the first charging gun and the second charging gun charging the electric product, the charging pile determines whether the first charging gun and the second charging gun charge the electric product simultaneously according to a preset voltage fluctuation detection instruction, including:

[0015] During the process of the first charging gun and the second charging gun charging the electric product, the charging pile detects the current charging sub-process, and the current charging sub-process includes a constant current charging sub-process or a constant voltage charging sub-process;

[0016] The charging pile determines the voltage fluctuation value corresponding to the current charging sub-process, and the voltage fluctuation value includes a voltage downward fluctuation value;

[0017] The charging pile controls the first charging gun to reduce the first output voltage by the voltage downward fluctuation value to obtain the detection output voltage corresponding to the first charging gun;

[0018] The charging pile detects the second output voltage of the second charging gun and determines whether the second output voltage matches the detection output voltage;

[0019] When the second output voltage matches the detection output voltage, the charging pile determines that the first charging gun and the second charging gun charge the electric product simultaneously.

[0020] As an optional implementation manner, in the first aspect of the present invention, the charging parameter information includes the requested charging current, requested charging voltage, constant current accuracy, constant voltage accuracy of the electric product, and the battery voltage of the electric product;

[0021] The charging pile determines the voltage fluctuation value corresponding to the current charging sub-process, including:

[0022] When the current charging sub - process includes the constant - current charging sub - process, the charging pile determines the single - gun request current according to the requested charging current, and determines the current fluctuation range corresponding to the constant - current charging sub - process according to the single - gun request current and the current - stabilizing accuracy;

[0023] The charging pile determines the voltage fluctuation value corresponding to the constant - current charging sub - process according to the current fluctuation range;

[0024] When the current charging sub - process includes the constant - voltage charging sub - process, the charging pile determines the voltage fluctuation range corresponding to the constant - voltage charging sub - process according to the requested charging voltage, the voltage - stabilizing accuracy, and the battery voltage;

[0025] The charging pile determines the voltage fluctuation value corresponding to the constant - voltage charging sub - process according to the voltage fluctuation range.

[0026] As an alternative implementation, in the first aspect of the present invention, when the current charging sub - process includes the constant - current charging sub - process, the current fluctuation range includes:

[0027] a*i*I 请 ≤I≤b*I 请

[0028] When the current charging sub - process includes the constant - voltage charging sub - process, the voltage fluctuation range includes:

[0029] c*v*V 电池 ≤V≤(V 请 -V 电池 )

[0030] Wherein, a, b, and c represent preset coefficients, I 请 represents the requested charging current, V 请 represents the requested charging voltage, i represents the current - stabilizing accuracy, v represents the voltage - stabilizing accuracy, and V 电池 represents the battery voltage.

[0031] As an alternative implementation, in the first aspect of the present invention, the electric product sends charging parameter information to the charging pile, including:

[0032] When it is detected that the first charging gun in the charging pile is inserted into the electric product, the electric product performs a product insulation detection operation;

[0033] When the product insulation detection operation result corresponding to the product insulation detection operation meets the preset product insulation detection passing condition, a preset time window is started to detect whether the second charging gun in the charging pile is inserted into the electric product within the preset time window;

[0034] When the second charging gun is not inserted into the electric vehicle within the preset time window, the electric product sends charging parameter information to the charging pile.

[0035] When the second charging gun is inserted into the electric vehicle within the preset time window, the electric product sends charging parameter information to the charging pile.

[0036] As an optional implementation manner, in the first aspect of the present invention, when the first charging gun and the second charging gun simultaneously charge the electric product, the charging pile controls the first charging gun and the second charging gun to charge the electric product, including:

[0037] When the first charging gun and the second charging gun simultaneously charge the electric product, the charging pile controls the main charging gun to perform a charging gun insulation detection operation, and the main charging gun represents the charging gun that is inserted into the electric product first among the first charging gun and the second charging gun;

[0038] When the charging gun insulation detection result corresponding to the charging gun insulation detection operation meets the preset charging gun insulation detection passing condition, the charging pile controls the first charging gun and the second charging gun to charge the electric product;

[0039] And when the first charging gun and the second charging gun do not simultaneously charge the electric product, the method further includes:

[0040] The charging pile displays a charging confirmation interface to the user and receives charging confirmation information input by the user through the charging confirmation interface, where the charging confirmation information includes the charging gun identity information of the charging gun that needs to start charging;

[0041] The charging pile controls the charging gun that needs to start charging to perform a single-gun charging operation according to the charging confirmation information.

[0042] The second aspect of the present invention discloses a European standard multi-gun parallel charging system, which includes a charging pile and an electric product. The charging pile includes at least a first charging gun and a second charging gun. The charging pile includes a judgment module and a control module, and the electric product includes a sending module, where:

[0043] The sending module is used to send charging parameter information to the charging pile;

[0044] The judgment module is used to judge whether the first charging gun and the second charging gun simultaneously charge the electric product according to the charging parameter information and a preset voltage fluctuation detection instruction;

[0045] The control module is used to control the first charging gun and the second charging gun to charge the electric product when the first charging gun and the second charging gun charge the electric product simultaneously.

[0046] As an alternative implementation manner, in the second aspect of the present invention, the charging parameter information includes first charging parameter information corresponding to the first charging gun and second charging parameter information corresponding to the second charging gun;

[0047] The manner in which the determination module determines whether the first charging gun and the second charging gun charge the electric product simultaneously according to the charging parameter information and a preset voltage fluctuation detection instruction specifically includes:

[0048] Determine the difference in charging parameter information between the first charging parameter information and the second charging parameter information, and determine whether the difference in charging parameter information is less than a preset charging parameter information difference threshold;

[0049] When the difference in charging parameter information is less than the charging parameter information difference threshold, trigger the control module to execute the operation of controlling the first charging gun and the second charging gun to charge the electric product;

[0050] During the process of the first charging gun and the second charging gun charging the electric product, determine whether the first charging gun and the second charging gun charge the electric product simultaneously according to a preset voltage fluctuation detection instruction.

[0051] As an alternative implementation manner, in the second aspect of the present invention, the manner in which the determination module determines whether the first charging gun and the second charging gun charge the electric product simultaneously according to a preset voltage fluctuation detection instruction during the process of the first charging gun and the second charging gun charging the electric product specifically includes:

[0052] During the process of the first charging gun and the second charging gun charging the electric product, detect the current charging sub-process, where the current charging sub-process includes a constant current charging sub-process or a constant voltage charging sub-process;

[0053] Determine the voltage fluctuation value corresponding to the current charging sub-process, where the voltage fluctuation value includes a voltage downward fluctuation value;

[0054] Control the first charging gun to reduce the first output voltage by the voltage downward fluctuation value to obtain a detected output voltage corresponding to the first charging gun;

[0055] Detect the second output voltage of the second charging gun, and determine whether the second output voltage matches the detected output voltage;

[0056] When the second output voltage matches the detected output voltage, it is determined that the first charging gun and the second charging gun charge the electric product simultaneously.

[0057] As an alternative implementation, in the second aspect of the present invention, the charging parameter information includes the requested charging current, requested charging voltage, constant current accuracy, constant voltage accuracy, and the battery voltage of the electric product;

[0058] The manner in which the determination module determines the voltage fluctuation value corresponding to the current charging sub-process specifically includes:

[0059] When the current charging sub-process includes the constant current charging sub-process, the single-gun requested current is determined according to the requested charging current, and the current fluctuation range corresponding to the constant current charging sub-process is determined according to the single-gun requested current and the constant current accuracy;

[0060] The voltage fluctuation value corresponding to the constant current charging sub-process is determined according to the current fluctuation range;

[0061] When the current charging sub-process includes the constant voltage charging sub-process, the voltage fluctuation range corresponding to the constant voltage charging sub-process is determined according to the requested charging voltage, the constant voltage accuracy, and the battery voltage;

[0062] The voltage fluctuation value corresponding to the constant voltage charging sub-process is determined according to the voltage fluctuation range.

[0063] As an alternative implementation, in the second aspect of the present invention, when the current charging sub-process includes the constant current charging sub-process, the current fluctuation range includes:

[0064] a*i*I 请 ≤I≤b*I 请

[0065] When the current charging sub-process includes the constant voltage charging sub-process, the voltage fluctuation range includes:

[0066] c*v*V 电池 ≤V≤(V 请 -V 电池 )

[0067] wherein, a, b, and c represent preset coefficients, I 请 represents the requested charging current, V 请 represents the requested charging voltage, i represents the constant current accuracy, v represents the constant voltage accuracy, and V 电池 represents the battery voltage.

[0068] As an alternative implementation, in the second aspect of the present invention, the specific manner in which the sending module sends charging parameter information to the charging pile includes:

[0069] When it is detected that the first charging gun in the charging pile is inserted into the electric product, the electric product performs a product insulation detection operation;

[0070] When the product insulation detection operation result corresponding to the product insulation detection operation meets the preset product insulation detection passing condition, a preset time window is started to detect whether the second charging gun in the charging pile is inserted into the electric product within the preset time window;

[0071] When the second charging gun is not inserted into the electric vehicle within the preset time window, the electric product sends charging parameter information to the charging pile;

[0072] When the second charging gun is inserted into the electric vehicle within the preset time window, the electric product sends charging parameter information to the charging pile.

[0073] As an alternative implementation, in the second aspect of the present invention, when the first charging gun and the second charging gun simultaneously charge the electric product, the specific manner in which the control module controls the first charging gun and the second charging gun to charge the electric product includes:

[0074] When the first charging gun and the second charging gun simultaneously charge the electric product, the control main charging gun performs a charging gun insulation detection operation, and the main charging gun represents the charging gun that is inserted into the electric product first among the first charging gun and the second charging gun;

[0075] When the charging gun insulation detection result corresponding to the charging gun insulation detection operation meets the preset charging gun insulation detection passing condition, the first charging gun and the second charging gun are controlled to charge the electric product;

[0076] In addition, the charging pile further includes a display module, wherein:

[0077] The display module is configured to display a charging confirmation interface to the user and receive charging confirmation information input by the user through the charging confirmation interface when the first charging gun and the second charging gun do not simultaneously charge the electric product, and the charging confirmation information includes the charging gun identity information of the charging gun that needs to start charging;

[0078] The control module is further configured to control the charging gun that needs to start charging to perform a single-gun charging operation according to the charging confirmation information.

[0079] A third aspect of the present invention discloses an electric vehicle, which includes at least two European standard charging sockets, a vehicle controller, and a battery management system. Each of the European standard charging sockets includes a communication module, wherein:

[0080] When a charging signal corresponding to at least one target European standard charging socket is detected, the communication functions of the communication modules of the other European standard charging sockets except the target European standard charging socket in each of the European standard charging sockets are turned off;

[0081] Moreover, the turning off the communication functions of the communication modules of the other European standard charging sockets except the target European standard charging socket in each of the European standard charging sockets includes:

[0082] Turning off the communication functions of the communication modules of the other European standard charging sockets except the target European standard charging socket in each of the European standard charging sockets through the vehicle controller or the battery management system;

[0083] Moreover, when a charging end signal corresponding to each of the European standard charging sockets is detected, a communication restoration operation is performed on each of the European standard charging sockets with the communication functions turned off through the vehicle controller or the battery management system.

[0084] A fourth aspect of the present invention discloses a charging pile, which includes at least two charging guns and a charging pile controller. Each of the charging guns includes a corresponding insulation detection module, wherein:

[0085] The charging pile controller is configured to control the detection timing of each of the insulation detection modules.

[0086] As an optional implementation manner, in the fourth aspect of the present invention, when it is detected that the first charging gun in the charging pile is inserted into the electric vehicle and charging information is received, a preset time window is started to detect whether any other charging guns in the charging pile are inserted into the electric vehicle within the preset time window;

[0087] When no other charging guns in the charging pile are inserted into the electric vehicle within the preset time window, the first charging gun is controlled to charge the electric vehicle;

[0088] When at least one other charging gun in the charging pile is inserted into the electric vehicle within the preset time window, it is determined whether the charging information of each of the charging guns inserted into the electric vehicle is consistent. When there is a charging gun with inconsistent charging information, the first charging gun and each other charging gun with the same charging information as the first charging gun are controlled to charge the electric vehicle;

[0089] When the charging information of each charging gun inserted into the electric vehicle is consistent, extend the preset time window. When it is detected that no other charging gun in the charging pile is inserted into the electric vehicle within the extended preset time window, control all the charging guns inserted into the electric vehicle to charge the electric vehicle.

[0090] As an alternative implementation manner, in the fourth aspect of the present invention, for each charging gun inserted into the electric vehicle in the charging pile, determine the detection timing of the insulation detection module of the charging gun according to the sorting before and after the charging gun is inserted into the electric vehicle.

[0091] The fifth aspect of the present invention discloses a European standard multi-gun parallel charging device, and the device includes:

[0092] A memory storing executable program code;

[0093] A processor coupled to the memory;

[0094] The processor calls the executable program code stored in the memory and executes the European standard multi-gun parallel charging method disclosed in the first aspect of the present invention.

[0095] The sixth aspect of the present invention discloses a computer storage medium, and the computer storage medium stores computer instructions, which are used to execute the European standard multi-gun parallel charging method disclosed in the first aspect of the present invention when the computer instructions are called.

[0096] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0097] In the embodiments of the present invention, the electric product sends charging parameter information to the charging pile, and the charging pile determines whether the first charging gun and the second charging gun charge the electric product simultaneously according to the charging parameter information and the preset voltage fluctuation detection instruction. When the first charging gun and the second charging gun charge the electric product simultaneously, the charging pile controls the first charging gun and the second charging gun to charge the electric product. It can be seen that implementing the present invention can improve the charging efficiency based on dual-gun charging, and at the same time realize dynamic adjustment of the insulation detection strategy, improve the insulation detection accuracy of dual-gun charging, and further improve the safety and operation convenience of dual-gun charging, and enhance the user charging experience. Description of the Drawings

[0098] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0099] Figure 1 It is a schematic flowchart of a European standard multi-gun parallel charging method disclosed in an embodiment of the present invention;

[0100] Figure 2 It is a schematic flowchart of another European standard multi-gun parallel charging method disclosed in an embodiment of the present invention;

[0101] Figure 3 It is a schematic structural diagram of a European standard multi-gun parallel charging system disclosed in an embodiment of the present invention;

[0102] Figure 4 It is a schematic structural diagram of another European standard multi-gun parallel charging system disclosed in an embodiment of the present invention;

[0103] Figure 5 It is a schematic structural diagram of a European standard multi-gun parallel charging device disclosed in an embodiment of the present invention. Specific embodiments

[0104] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

[0105] The terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, device, product or terminal that includes a series of steps or units is not limited to the listed steps or units, but may optionally further include steps or units not listed, or may optionally further include other steps or units inherent to these processes, methods, products or terminals.

[0106] Referring to "embodiment" herein means that a specific feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present invention. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0107] The present invention discloses a European standard multi-gun parallel charging method and system, an electric vehicle, a charging pile, and a device, which can improve the charging efficiency based on dual-gun charging, and at the same time realize dynamic adjustment of the insulation detection strategy, improve the insulation detection accuracy of dual-gun charging, and further improve the safety and operation convenience of dual-gun charging, and enhance the user charging experience. The following will be described in detail respectively.

[0108] Embodiment 1

[0109] Please refer to Figure 1 , Figure 1 which is a schematic flowchart of a European standard multi-gun parallel charging method disclosed in an embodiment of the present invention. Among them, Figure 1 the described European standard multi-gun parallel charging method can be applied to a European standard multi-gun parallel charging system. The European standard multi-gun parallel charging system can include a charging pile and an electric product. The charging pile can at least include a first charging gun and a second charging gun. The electric product can at least include a first charging seat, a second charging seat, and a battery. The charging pile can include an intelligent server or an intelligent platform for controlling the charging gun. The intelligent server includes a local server or a cloud server, which is not limited in the embodiment of the present invention. As Figure 1 shown, the European standard multi-gun parallel charging method can include the following operations:

[0110] 101. The electric product sends charging parameter information to the charging pile.

[0111] In an embodiment of the present invention, optionally, the charging pile complies with the IEC61851 standard. After the charging gun on the charging pile is inserted by the user into the charging socket of the electric product, the charging pile can send the charging identification information corresponding to the charging gun to the electric product through the charging gun. Specifically, when the user uses single-gun charging, the user can separately insert the first charging gun into the first charging socket or the second charging socket, or separately insert the second charging gun into the first charging socket or the second charging socket. When the user uses dual-gun parallel charging, the user can first insert the first charging gun into the first charging socket and then insert the second charging gun into the second charging socket, or first insert the second charging gun into the first charging socket and then insert the first charging gun into the second charging socket. That is, the first and the second do not specifically limit the charging gun and the charging socket. The first operation is the first, and the second operation is the second. The first charging gun parameters of the first charging gun and the second charging gun parameters of the second charging gun can be the same or different. The first charging socket parameters of the first charging socket and the second charging socket parameters of the second charging socket can be the same or different. In this embodiment, an example is given where the user first inserts the first charging gun into the first charging socket and then inserts the second charging gun into the second charging socket. After the user first inserts the first charging gun into the first charging socket and then inserts the second charging gun into the second charging socket, the charging pile can send the charging identification information through the first charging gun and the second charging gun respectively. The charging identification information can include the first charging identifier corresponding to the first charging gun and / or the second charging identifier corresponding to the second charging gun, and the charging pile identity identification code corresponding to the charging pile, which is not limited in the present invention.

[0112] In an embodiment of the present invention, optionally, the electric product can include an electric vehicle, an electric construction machinery, etc. that support the dual-gun charging function. The electric construction machinery can include one or more of an electric engineering transport vehicle, an electric crane, an electric excavator, an electric bulldozer, an electric roller, an electric loader, an electric engineering rescue vehicle, and an electric trailer, etc., which is not limited in the present invention.

[0113] In an embodiment of the present invention, optionally, after receiving the charging identification information sent by the charging pile, the electric product can verify the charging identification information. When the verification passes, it can send the charging parameter information to the charging pile based on the charging identification information. Specifically, it can send the charging parameter information to the first charging gun and the second charging gun through the first charging socket and the second charging socket respectively. The charging parameter information can include the battery information of the electric product and the charging request parameter information. The battery information can include one or more combinations of the maximum voltage, maximum current, and battery SOC provided by the BMS of the battery of the electric product. The charging request parameter information can include the requested charging current and the requested charging voltage, which is not limited in the present invention.

[0114] 102. The charging pile determines whether the first charging gun and the second charging gun are simultaneously charging the electric product according to the charging parameter information and the preset voltage fluctuation detection instruction.

[0115] In an embodiment of the present invention, optionally, the charging pile can determine whether the first charging gun and the second charging gun are simultaneously charging the electric product through the charging parameter information fed back by the electric product and the preset voltage fluctuation detection instruction. Specifically, the charging pile can make a first judgment on whether the first charging gun and the second charging gun are simultaneously charging the electric product according to the charging parameter information fed back by the electric product, and when the result of the first judgment indicates that the first charging gun and the second charging gun are simultaneously charging the electric product, make a second judgment on whether the first charging gun and the second charging gun are simultaneously charging the electric product through the preset voltage fluctuation detection instruction. The present invention does not make a limitation.

[0116] 103. When the first charging gun and the second charging gun are simultaneously charging the electric product, the charging pile controls the first charging gun and the second charging gun to charge the electric product.

[0117] In an embodiment of the present invention, optionally, when the first charging gun and the second charging gun are simultaneously charging the electric product, the charging pile can control the first charging gun to perform the charging gun insulation detection operation and control the second charging gun to turn off the insulation detection operation. After the first charging gun finishes the charging gun insulation detection operation, the charging pile controls the first charging gun and the second charging gun to charge the electric product. The present invention does not make a limitation.

[0118] It can be seen that implementing Figure 1 The described European standard multi-gun parallel charging method can send charging parameter information from the electric product to the charging pile. The charging pile determines whether the first charging gun and the second charging gun are simultaneously charging the electric product according to the charging parameter information and the preset voltage fluctuation detection instruction. When the first charging gun and the second charging gun are simultaneously charging the electric product, the charging pile controls the first charging gun and the second charging gun to charge the electric product, which can improve the charging efficiency based on dual-gun charging, and at the same time realize dynamic adjustment of the insulation detection strategy, improve the insulation detection accuracy of dual-gun charging, and further improve the safety and operation convenience of dual-gun charging, and enhance the user charging experience.

[0119] In an optional embodiment, the operation that the electric product sends the charging parameter information to the charging pile may include the following operations:

[0120] When it is detected that the first charging gun in the charging pile is inserted into the electric product, the electric product performs the product insulation detection operation;

[0121] When the product insulation detection operation result corresponding to the product insulation detection operation meets the preset product insulation detection pass condition, a preset time window is started to detect whether the second charging gun in the charging pile is inserted into the electric product within the preset time window;

[0122] When the second charging gun is not inserted into the electric vehicle within the preset time window, the electric product sends charging parameter information to the charging pile;

[0123] When the second charging gun is inserted into the electric vehicle within the preset time window, the electric product sends charging parameter information to the charging pile.

[0124] In this optional embodiment, optionally, the first charging gun in the charging pile can represent the charging gun that is first inserted into the electric vehicle in the charging pile. When it is detected that the first charging gun in the charging pile is inserted into the electric vehicle, that is, when the user first inserts the first charging gun into the first charging seat of the electric product, the first charging gun and the first charging seat perform communication handshake connection, and the first charging gun sends the first charging identifier to the first charging seat. When the electric product receives the first charging identifier sent by the charging pile, the electric product performs the product insulation detection operation, and the BMS closes the communication of the second charging seat. When the product insulation detection operation result corresponding to the product insulation detection operation meets the preset product insulation detection pass condition, a preset time window is started to detect whether the second charging gun in the charging pile is inserted into the electric vehicle within the preset time window. When the second charging gun is not inserted into the electric vehicle within the preset time window, the electric product sends charging parameter information to the charging pile. This embodiment is not limited.

[0125] In this optional embodiment, optionally, when the user inserts the second charging gun into the second charging seat of the electric product, the second charging gun and the second charging seat perform communication handshake connection, and the second charging gun can send the second charging identifier to the second charging seat. When the electric product receives the second charging identifier sent by the charging pile, the electric product sends charging parameter information to the charging pile. Specifically, the electric product sends the first charging parameter information to the first charging gun through the first charging seat and sends the second charging parameter information to the second charging gun through the second charging seat. This embodiment is not limited.

[0126] In this optional embodiment, optionally, when the user first inserts the first charging gun into the first charging socket of the electric product, the first charging gun performs a charging gun insulation detection operation. When the charging gun insulation detection operation result corresponding to the charging gun insulation detection operation meets the preset charging gun insulation detection passing condition, a single-gun charging confirmation interface of the first charging gun is displayed on the display interface of the charging pile. When the charging gun insulation detection operation result does not meet the preset charging gun insulation detection passing condition, the charging of the first charging gun is disconnected and an alarm is given; when the user confirms the single-gun charging of the first charging gun on the single-gun charging confirmation interface of the first charging gun, the single-gun charging of the first charging gun is automatically started and the charging status is displayed. When the user does not confirm the single-gun charging of the first charging gun on the single-gun charging confirmation interface of the first charging gun, it is detected whether the second charging gun is inserted into the electric product. When the user inserts the second charging gun into the second charging socket of the electric product, the second charging gun performs a charging gun insulation detection operation. When the charging gun insulation detection operation result corresponding to the charging gun insulation detection operation meets the preset charging gun insulation detection passing condition, an operation of determining whether the first charging gun and the second charging gun charge the electric product simultaneously is performed. When the charging gun insulation detection operation result does not meet the preset charging gun insulation detection passing condition, the charging of the second charging gun is disconnected and an alarm is given. This embodiment is not limited.

[0127] It can be seen that implementing this optional embodiment enables the electric product to perform a product insulation detection operation when receiving the first charging identifier sent by the charging pile. When the product insulation detection operation result corresponding to the product insulation detection operation meets the preset product insulation detection passing condition, it is detected whether the second charging identifier sent by the charging pile is received. When the electric product receives the second charging identifier sent by the charging pile, the electric product sends charging parameter information to the charging pile, realizing vehicle-end insulation detection and respectively feeding back vehicle-end battery information and charging request information to the two charging guns, improving the charging efficiency and accuracy of dual-gun charging, and further improving the safety and operation convenience of dual-gun charging, and enhancing the user charging experience.

[0128] In another optional embodiment, when the first charging gun and the second charging gun charge the electric product simultaneously, the operations for the charging pile to control the first charging gun and the second charging gun to charge the electric product may include the following:

[0129] When the first charging gun and the second charging gun charge the electric product simultaneously, the charging pile controls the main charging gun to perform a charging gun insulation detection operation, where the main charging gun refers to the charging gun that is inserted into the electric product first among the first charging gun and the second charging gun;

[0130] When the charging gun insulation detection result corresponding to the charging gun insulation detection operation meets the preset charging gun insulation detection passing condition, the charging pile controls the first charging gun and the second charging gun to charge the electric product;

[0131] Moreover, when the first charging gun and the second charging gun do not charge the electric product simultaneously, the European standard multi-gun parallel charging method may further include the following operations:

[0132] The charging pile displays a charging confirmation interface to the user and receives the charging confirmation information input by the user through the charging confirmation interface. The charging confirmation information includes the charging gun identity information of the charging gun that needs to start charging.

[0133] The charging pile controls the charging gun that needs to start charging to perform a single-gun charging operation according to the charging confirmation information.

[0134] In this optional embodiment, optionally, when it is determined that the first charging gun and the second charging gun charge the electric product simultaneously, that is, the first charging gun and the second charging gun are connected in parallel to the positive and negative terminals of the same battery system. At this time, the charging pile can control the main charging gun to perform a charging gun insulation detection operation and turn off the charging gun insulation detection operation of the auxiliary charging gun. Among them, the main charging gun can represent the charging gun that is inserted into the electric product first among the first charging gun and the second charging gun. When the charging gun insulation detection result corresponding to the charging gun insulation detection operation meets the preset charging gun insulation detection passing condition, the charging pile controls the first charging gun and the second charging gun to charge the electric product. This embodiment is not limited.

[0135] In this optional embodiment, optionally, when it is determined that the first charging gun and the second charging gun do not charge the electric product simultaneously, a charging confirmation interface can be displayed to the user through the charging pile. The charging confirmation interface may include a charging gun confirmation button. Specifically, a single-gun charging interface of the first charging gun and / or a single-gun charging interface of the second charging gun can be displayed to the user. The single-gun charging interface of the first charging gun and the single-gun charging interface of the second charging gun can appear in the same interface, or can be connected and appear in different interfaces by means of sliding, flipping, scrolling, etc. The user can select the charging gun that needs to perform single-gun charging on the charging confirmation interface. Specifically, a certain charging gun can be selected for single-gun charging, or all the charging guns that have been inserted into the electric product can be selected for single-gun charging. The charging pile receives the charging confirmation information input by the user through the charging confirmation interface. The charging confirmation information may include the charging gun identity information of the charging gun that needs to start charging. The charging pile can control the charging gun that needs to start charging to perform a single-gun charging operation according to the charging confirmation information. This embodiment is not limited.

[0136] It can be seen that when the first charging gun and the second charging gun charge the electric product simultaneously, the charging pile controls the main charging gun to perform the charging gun insulation detection operation. When the charging gun insulation detection result corresponding to the charging gun insulation detection operation meets the preset charging gun insulation detection passing condition, the charging pile controls the first charging gun and the second charging gun to charge the electric product. It can perform insulation detection only on the charging gun inserted first during dual-gun charging, dynamically adjust the insulation detection strategy, improve the insulation detection accuracy of dual-gun charging, and further improve the safety and operation convenience of dual-gun charging, enhancing the user charging experience. When the first charging gun and the second charging gun do not charge the electric product simultaneously, the charging pile displays a charging confirmation interface to the user and receives the charging confirmation information input by the user through the charging confirmation interface. The charging confirmation information includes the charging gun identity information of the charging gun that needs to start charging. The charging pile controls the charging gun that needs to start charging to perform a single-gun charging operation according to the charging confirmation information, performs single-gun charging based on the user instruction, meets the user's charging needs, realizes dynamic insulation detection for single-gun and dual-gun charging, improves charging safety, and improves the user experience at the same time.

[0137] Embodiment 2

[0138] Please refer to Figure 2 , Figure 2 which is a schematic flowchart of a European standard multi-gun parallel charging method disclosed in an embodiment of the present invention. Among them, Figure 2 the described European standard multi-gun parallel charging method can be applied to a European standard multi-gun parallel charging system. The European standard multi-gun parallel charging system can include a charging pile and an electric product. The charging pile can at least include a first charging gun and a second charging gun. The electric product can at least include a first charging seat, a second charging seat, and a battery. The charging pile can include an intelligent server or an intelligent platform for controlling the charging gun. The intelligent server includes a local server or a cloud server, which is not limited in the embodiments of the present invention. As Figure 2 shown, the European standard multi-gun parallel charging method can include the following operations:

[0139] 201. The electric product sends charging parameter information to the charging pile.

[0140] 202. The charging pile determines the charging parameter information difference between the first charging parameter information and the second charging parameter information, and judges whether the charging parameter information difference is less than a preset charging parameter information difference threshold.

[0141] In an embodiment of the present invention, optionally, the charging parameter information may include the first charging parameter information corresponding to the first charging gun and the second charging parameter information corresponding to the second charging gun. Specifically, the charging parameter information may include the battery information of the electric product and the charging request parameter information. The battery information may include one or more combinations of the maximum voltage, maximum current, and battery SOC provided by the BMS of the battery of the electric product. The charging request parameter information may include the requested charging current and the requested charging voltage, which are not limited in the present invention.

[0142] In an embodiment of the present invention, optionally, the charging pile may determine the difference in charging parameter information between the first charging parameter information and the second charging parameter information. Specifically, the difference in charging parameter information may include the difference in battery information and / or the difference in charging request parameter information. The charging pile may determine whether the difference in charging parameter information is less than a preset difference threshold of charging parameter information, which is not limited in the present invention.

[0143] 203. When the difference in charging parameter information is less than the difference threshold of charging parameter information, trigger the charging pile to execute an operation of controlling the first charging gun and the second charging gun to charge the electric product.

[0144] In an embodiment of the present invention, optionally, when the charging pile determines that the difference in charging parameter information is less than the difference threshold of charging parameter information, it may indicate that the first charging gun and the second charging gun in the charging pile charge the electric product simultaneously. That is, the charging pile may be triggered to execute an operation of controlling the first charging gun and the second charging gun to charge the electric product. That is, the charging pile may control the first charging gun to perform an insulation detection operation of the charging gun and control the second charging gun to turn off the insulation detection operation. After the first charging gun finishes the insulation detection operation of the charging gun, the charging pile controls the first charging gun and the second charging gun to charge the electric product, which is not limited in the present invention.

[0145] 204. During the process of the first charging gun and the second charging gun charging the electric product, the charging pile determines whether the first charging gun and the second charging gun charge the electric product simultaneously according to a preset voltage fluctuation detection instruction.

[0146] In an embodiment of the present invention, optionally, during the process of the first charging gun and the second charging gun charging the electric product, the charging pile may determine whether the first charging gun and the second charging gun charge the electric product simultaneously according to a preset voltage fluctuation detection instruction, that is, perform a secondary determination on whether the first charging gun and the second charging gun charge the electric product simultaneously, which is not limited in the present invention.

[0147] 205. When the first charging gun and the second charging gun charge the electric product simultaneously, the charging pile controls the first charging gun and the second charging gun to charge the electric product.

[0148] In the embodiments of the present invention, for other descriptions of steps 201 and 205, please refer to the detailed descriptions of steps 101 and 103 in the first embodiment of the present invention, and the embodiments of the present invention will not be elaborated herein.

[0149] It can be seen that the implemented Figure 2 The described European standard multi-gun parallel charging method can enable an electric product to receive charging identification information sent by a charging pile, determine the charging parameter information difference between the first charging parameter information and the second charging parameter information through the charging pile, and determine whether the charging parameter information difference is less than a preset charging parameter information difference threshold. When the charging parameter information difference is less than the charging parameter information difference threshold, the charging pile is triggered to execute an operation of controlling the first charging gun and the second charging gun to charge the electric product. During the process of the first charging gun and the second charging gun charging the electric product, according to a preset voltage fluctuation detection instruction, the charging pile determines whether the first charging gun and the second charging gun charge the electric product simultaneously. The accuracy and reliability of determining dual-gun simultaneous charging can be improved through two determinations. When the first charging gun and the second charging gun charge the electric product simultaneously, the charging pile controls the first charging gun and the second charging gun to charge the electric product, which can improve the charging efficiency based on dual-gun charging, and at the same time, dynamically adjust the insulation detection strategy, improve the insulation detection accuracy of dual-gun charging, thereby improving the safety and operation convenience of dual-gun charging and enhancing the user charging experience.

[0150] In an alternative embodiment, during the process of the first charging gun and the second charging gun charging the electric product, the charging pile determining whether the first charging gun and the second charging gun charge the electric product simultaneously according to a preset voltage fluctuation detection instruction may include the following operations:

[0151] During the process of the first charging gun and the second charging gun charging the electric product, the charging pile detects the current charging sub-process, and the current charging sub-process includes a constant current charging sub-process or a constant voltage charging sub-process;

[0152] The charging pile determines the voltage fluctuation value corresponding to the current charging sub-process, and the voltage fluctuation value includes a voltage downward fluctuation value;

[0153] The charging pile controls the first charging gun to reduce the first output voltage by the voltage downward fluctuation value to obtain the detection output voltage corresponding to the first charging gun;

[0154] The charging pile detects the second output voltage of the second charging gun and determines whether the second output voltage matches the detection output voltage;

[0155] When the second output voltage matches the detection output voltage, the charging pile determines that the first charging gun and the second charging gun charge the electric product simultaneously.

[0156] In this optional embodiment, optionally, during the dual-gun parallel charging process, the two charging guns are connected in parallel to both ends of the positive and negative poles of the same battery system, that is, the actual output voltages of the two guns should be equal, or the difference between the actual output voltages of the two guns should be less than a preset value. During the charging process of the first charging gun and the second charging gun for the electric product, the charging pile can detect the current charging sub-process, and the current charging sub-process can include a constant-current charging sub-process or a constant-voltage charging sub-process. Specifically, the charging process of the battery can include four sub-processes, specifically including a trickle charging sub-process, a constant-current charging sub-process, a constant-voltage charging sub-process, and a charging termination sub-process. Among them, the trickle charging process: This is the first stage of the charging process, mainly used for pre-charging (restorative charging) the fully discharged battery cells. When the battery voltage is lower than about 3V, a constant current of up to 0.1C is used to charge the battery. The current in this stage is very small, and the purpose is to safely restore the charging ability of the battery; the constant-current charging sub-process: When the battery voltage rises above the trickle charging threshold, the charging current is increased for constant-current charging. The current for constant-current charging is between 0.2 and 1.0C. The current in this stage does not require very high precision, and a quasi-constant current is also acceptable. The current value in the constant-current charging stage is generally set between 0.2 and 1.0C, and the highest voltage value should be limited according to the cathode material; the constant-voltage charging sub-process: When the battery voltage rises to 4.2V, the constant-current charging ends and the constant-voltage charging stage begins. In this stage, the voltage remains unchanged and the current continuously decreases. To make the performance Q reach the best, the voltage regulation tolerance should be better than +1%. The current in the constant-voltage charging stage decreases gradually with the saturation degree of the battery cell as the charging process continues. When the charging current decreases from the maximum value Q to 0.01C, it is considered that the charging is terminated; the charging termination sub-process: There are two typical charging termination methods, using the minimum charging current judgment or using the timer Q (or a combination of both). The minimum current method monitors the charging current in the constant-voltage charging stage and terminates the charging when the charging current decreases to the range of 0.02C to 0.07C. The timer method starts timing from the beginning of the constant-voltage charging stage and terminates the charging process after two hours of continuous charging. This embodiment does not make a limitation.

[0157] In this optional embodiment, optionally, the charging pile determines the voltage fluctuation value corresponding to the current charging sub-process. When the current charging sub-process includes a constant-current charging sub-process, the charging pile can determine the first voltage fluctuation value corresponding to the constant-current charging sub-process. When the current charging sub-process includes a constant-voltage charging sub-process, the charging pile can determine the second voltage fluctuation value corresponding to the constant-voltage charging sub-process. The voltage fluctuation value includes the voltage downward fluctuation value. Specifically, during the process of controlling the voltage fluctuation of the charging gun, to avoid the voltage from rising and breaking through the maximum voltage limit of the charging gun or the electric product, the voltage downward fluctuation value is used to control the charging gun to fluctuate downward in voltage. This embodiment does not make a limitation.

[0158] In this optional embodiment, optionally, the charging pile may control the first charging gun to reduce the first output voltage by the voltage downward fluctuation value to obtain the first detected output voltage corresponding to the first charging gun, detect the second output voltage of the second charging gun, and determine whether the second output voltage matches the first detected output voltage. When the second output voltage matches the first detected output voltage, the charging pile determines that the first charging gun and the second charging gun charge the electric product simultaneously. When the second output voltage does not match the first detected output voltage, the charging pile controls the second charging gun to stop charging and controls the first charging gun to perform normal single-gun charging. This embodiment is not limited.

[0159] In this optional embodiment, optionally, when the charging pile determines that the second output voltage matches the detected output voltage, it may also control the second charging gun to reduce the second output voltage by the voltage downward fluctuation value to obtain the second detected output voltage corresponding to the second charging gun, detect the third output voltage of the first charging gun, and determine whether the second detected output voltage matches the third output voltage. When the second detected output voltage matches the third output voltage, the charging pile determines that the first charging gun and the second charging gun charge the electric product simultaneously. When the second detected output voltage does not match the third output voltage, the charging pile controls the second charging gun to stop charging and controls the first charging gun to perform normal single-gun charging. This embodiment is not limited.

[0160] It can be seen that implementing this optional embodiment enables the charging pile to detect the current charging sub-process during the charging of the electric product by the first charging gun and the second charging gun, determine the voltage fluctuation value corresponding to the current charging sub-process, control the first charging gun to reduce the first output voltage by the voltage downward fluctuation value to obtain the detected output voltage corresponding to the first charging gun, detect the second output voltage of the second charging gun, and determine whether the second output voltage matches the detected output voltage. When the second output voltage matches the detected output voltage, the charging pile determines that the first charging gun and the second charging gun charge the electric product simultaneously. It can determine whether dual-gun charging is simultaneous based on the method of actively fluctuating the output voltage downward, improving the accuracy and reliability of determining dual-gun simultaneous charging, thereby improving the insulation detection accuracy of dual-gun charging and the safety and operation convenience of dual-gun charging.

[0161] In another optional embodiment, the charging parameter information includes the requested charging current, requested charging voltage, constant current accuracy, constant voltage accuracy of the electric product, and the battery voltage of the electric product;

[0162] The charging pile determining the voltage fluctuation value corresponding to the current charging sub-process may include the following operations:

[0163] When the current charging sub-process includes a constant-current charging sub-process, the charging pile determines the single-gun requested current according to the requested charging current, and determines the current fluctuation range corresponding to the constant-current charging sub-process according to the single-gun requested current and the constant-current accuracy;

[0164] The charging pile determines the voltage fluctuation value corresponding to the constant-current charging sub-process according to the current fluctuation range;

[0165] When the current charging sub-process includes a constant-voltage charging sub-process, the charging pile determines the voltage fluctuation range corresponding to the constant-voltage charging sub-process according to the requested charging voltage, the constant-voltage accuracy, and the battery voltage;

[0166] The charging pile determines the voltage fluctuation value corresponding to the constant-voltage charging sub-process according to the voltage fluctuation range.

[0167] In this optional embodiment, optionally, the charging parameter information may include the requested charging current, the requested charging voltage, the constant-current accuracy, the constant-voltage accuracy, and the battery voltage of the electric product, which is not limited in this embodiment.

[0168] In this optional embodiment, optionally, taking the electric product as 423 kwh and the battery platform voltage of the electric product as 618.24 V as an example, when the measured charging current is 400 A, the voltage is approximately 655 V, then the internal resistance of the battery system is:

[0169] Battery system internal resistance = (655 V - 618.24 V) / 400 * 1000 = 92.736 mΩ

[0170] The voltage regulation accuracy is ≤ ±0.5%, ≤ ±3.09V (platform voltage 618.24V); the current regulation accuracy is ≤ ±1%, ≤ ±4A (relative to 400A charging). For voltage fluctuation = 4A * 92.736mΩ / 1000 = 0.37V. When the current charging sub-process includes a constant-current charging sub-process, the charging pile determines the single-gun request current based on the requested charging current. Taking the requested charging current of 400A as an example, the two guns of the charging pile are respectively 200A, that is, the single-gun request current is 200A. At this time, the current fluctuation range corresponding to the constant-current charging sub-process can be determined according to the single-gun request current and the current regulation accuracy. The charging pile determines the voltage fluctuation value corresponding to the constant-current charging sub-process according to the current fluctuation range. For example, assuming that the first gun actively drops from the original current of 200A to 150A, the total current of the battery system = 150 + 200A = 350A, and the actual output voltage of the gun is the battery electromotive force 618.24V + 350A * internal resistance 92.736mΩ = 650.7v, which is lower than the voltage of 655V when the measured charging current is 400A. Optionally, when the current charging sub-process includes a constant-voltage charging sub-process, the charging pile determines the voltage fluctuation range corresponding to the constant-voltage charging sub-process according to the requested charging voltage, the voltage regulation accuracy, and the battery voltage. The charging pile determines the voltage fluctuation value corresponding to the constant-voltage charging sub-process according to the voltage fluctuation range. This embodiment is not limited.

[0171] It can be seen that implementing this optional embodiment enables the charging pile to determine the single-gun request current according to the requested charging current when the current charging sub-process includes a constant-current charging sub-process, and determine the current fluctuation range corresponding to the constant-current charging sub-process according to the single-gun request current and the current regulation accuracy. The charging pile determines the voltage fluctuation value corresponding to the constant-current charging sub-process according to the current fluctuation range. When the current charging sub-process includes a constant-voltage charging sub-process, the charging pile determines the voltage fluctuation range corresponding to the constant-voltage charging sub-process according to the requested charging voltage, the voltage regulation accuracy, and the battery voltage. The charging pile determines the voltage fluctuation value corresponding to the constant-voltage charging sub-process according to the voltage fluctuation range. It can determine the voltage fluctuation value based on different charging states, improve the accuracy of determining the voltage fluctuation value, and at the same time improve the accuracy and safety of realizing the voltage downward fluctuation operation.

[0172] In another optional embodiment, when the current charging sub-process includes a constant-current charging sub-process, the current fluctuation range includes:

[0173] a * i * I 请 ≤ I ≤ b * I 请

[0174] When the current charging sub-process includes a constant-voltage charging sub-process, the voltage fluctuation range includes:

[0175] c * v * V 电池 ≤ V ≤ (V 请 -V电池 )

[0176] Wherein, a, b, and c represent preset coefficients, I 请 represents the requested charging current, V 请 represents the requested charging voltage, i represents the constant current accuracy, v represents the constant voltage accuracy, and V 电池 represents the battery voltage.

[0177] In this optional embodiment, optionally, when the current charging sub-process includes a constant current charging sub-process, the current fluctuation range includes: a*i*I 请 ≤I≤b*I 请 , wherein, a and b represent preset coefficients, I 请 represents the requested charging current, and i represents the constant current accuracy. Among them, a and b can be set by the charging pile engineer according to the actual parameters of the charging pile and the charging environment. Specifically, for example, a can be 10, b can be 50%, and the constant current accuracy can include less than or equal to ±1%. That is, the current fluctuation range corresponding to the constant current charging sub-process needs to satisfy: 10*1%*I 请 ≤I≤50%*I 请 , that is, 10%*I 请 ≤I≤50%*I 请 , and this embodiment does not make a limitation.

[0178] In this optional embodiment, optionally, when the current charging sub-process includes a constant voltage charging sub-process, the voltage fluctuation range includes: c*v*V 电池 ≤V≤(V 请 -V 电池 ), wherein, c is the preset coefficient, V 请 represents the requested charging voltage, v represents the constant voltage accuracy, and V 电池 represents the battery voltage. Among them, c can be set by the charging pile engineer according to the actual parameters of the charging pile and the charging environment. Specifically, for example, c can be 2, and the constant voltage accuracy can include less than or equal to ±0.5%. That is, the voltage fluctuation range corresponding to the constant voltage charging sub-process needs to satisfy: 2*0.5%*V 电池 ≤V≤(V 请 -V 电池 ), that is, 1%*V 电池 ≤V≤(V 请 -V 电池 ), and this embodiment does not make a limitation.

[0179] It can be seen that implementing this optional embodiment can determine the voltage fluctuation value based on different charging states, improve the accuracy of determining the voltage fluctuation value, and at the same time improve the accuracy and safety of implementing the voltage downward fluctuation operation.

[0180] Embodiment III

[0181] Please refer to Figure 3 , Figure 3 which is a schematic structural diagram of a European standard multi-gun parallel charging system disclosed in an embodiment of the present invention. Among them, Figure 3 the described European standard multi-gun parallel charging system may include a charging pile and an electric product. The charging pile may at least include a first charging gun and a second charging gun. The electric product may at least include a first charging seat, a second charging seat, and a battery. The charging pile may include an intelligent server or an intelligent platform for controlling the charging gun. The intelligent server includes a local server or a cloud server, which is not limited in the embodiments of the present invention. As Figure 3 shown, the European standard multi-gun parallel charging system may include a charging pile 301 and an electric product 302. The charging pile 301 at least includes a first charging gun and a second charging gun. The charging pile 301 includes a judgment module 3011 and a control module 3012. The electric product 302 includes a sending module 3021, where:

[0182] The sending module 3021 is configured to send charging parameter information to the charging pile 301;

[0183] The judgment module 3011 is configured to judge whether the first charging gun and the second charging gun charge the electric product 302 simultaneously according to the charging parameter information and a preset voltage fluctuation detection instruction;

[0184] The control module 3012 is configured to control the first charging gun and the second charging gun to charge the electric product 302 when the first charging gun and the second charging gun charge the electric product simultaneously.

[0185] It can be seen that implementing Figure 3 the described European standard multi-gun parallel charging system can send charging parameter information from the electric product to the charging pile, judge whether the first charging gun and the second charging gun charge the electric product simultaneously according to the charging parameter information and a preset voltage fluctuation detection instruction by the charging pile. When the first charging gun and the second charging gun charge the electric product simultaneously, the charging pile controls the first charging gun and the second charging gun to charge the electric product, which can improve the charging efficiency based on dual-gun charging, and at the same time realize dynamic adjustment of the insulation detection strategy, improve the insulation detection accuracy of dual-gun charging, and further improve the safety and operation convenience of dual-gun charging, and enhance the user charging experience.

[0186] In an alternative embodiment, as Figure 4 shown, the charging parameter information includes first charging parameter information corresponding to the first charging gun and second charging parameter information corresponding to the second charging gun;

[0187] The specific manner in which the judgment module 3011 judges whether the first charging gun and the second charging gun charge the electric product 302 simultaneously according to the charging parameter information and a preset voltage fluctuation detection instruction includes:

[0188] Determine the charging parameter information difference between the first charging parameter information and the second charging parameter information, and determine whether the charging parameter information difference is less than a preset charging parameter information difference threshold;

[0189] When the charging parameter information difference is less than the charging parameter information difference threshold, trigger the control module 3012 to execute the operation of controlling the first charging gun and the second charging gun to charge the electric product;

[0190] During the process of charging the electric product by the first charging gun and the second charging gun, according to the preset voltage fluctuation detection instruction, determine whether the first charging gun and the second charging gun charge the electric product 302 simultaneously.

[0191] It can be seen that implementing Figure 4 The described European standard multi-gun parallel charging system can determine the charging parameter information difference between the first charging parameter information and the second charging parameter information through the charging pile, and determine whether the charging parameter information difference is less than the preset charging parameter information difference threshold. When the charging parameter information difference is less than the charging parameter information difference threshold, trigger the charging pile to execute the operation of controlling the first charging gun and the second charging gun to charge the electric product. During the process of charging the electric product by the first charging gun and the second charging gun, according to the preset voltage fluctuation detection instruction, determine whether the first charging gun and the second charging gun charge the electric product simultaneously, which can improve the accuracy and reliability of determining dual-gun simultaneous charging through two determinations. When the first charging gun and the second charging gun charge the electric product simultaneously, the charging pile controls the first charging gun and the second charging gun to charge the electric product, which can improve the charging efficiency based on dual-gun charging, and at the same time realize dynamic adjustment of the insulation detection strategy, improve the insulation detection accuracy of dual-gun charging, and further improve the safety and operation convenience of dual-gun charging, and enhance the user charging experience.

[0192] In another alternative embodiment, as Figure 4 shown, the specific method for the judgment module 3011 to determine whether the first charging gun and the second charging gun charge the electric product 302 simultaneously according to the preset voltage fluctuation detection instruction during the process of charging the electric product by the first charging gun and the second charging gun includes:

[0193] During the process of charging the electric product by the first charging gun and the second charging gun, detect the current charging sub-process, and the current charging sub-process includes a constant current charging sub-process or a constant voltage charging sub-process;

[0194] Determine the voltage fluctuation value corresponding to the current charging sub-process, and the voltage fluctuation value includes a voltage downward fluctuation value;

[0195] Control the first charging gun to reduce the first output voltage by the voltage downward fluctuation value to obtain the detected output voltage corresponding to the first charging gun;

[0196] Detect the second output voltage of the second charging gun and determine whether the second output voltage matches the detected output voltage;

[0197] When the second output voltage matches the detected output voltage, it is determined that the first charging gun and the second charging gun charge the electric product 302 simultaneously.

[0198] It can be seen that implementing Figure 4 The described European standard multi-gun parallel charging system can detect the current charging sub-process during the charging of the electric product by the first charging gun and the second charging gun. The charging pile determines the voltage fluctuation value corresponding to the current charging sub-process. The charging pile controls the first charging gun to reduce the first output voltage by the voltage downward fluctuation value to obtain the detected output voltage corresponding to the first charging gun. The charging pile detects the second output voltage of the second charging gun and determines whether the second output voltage matches the detected output voltage. When the second output voltage matches the detected output voltage, the charging pile determines that the first charging gun and the second charging gun charge the electric product simultaneously. It can judge whether dual-gun charging is simultaneous based on the method of actively fluctuating the output voltage downward, improving the accuracy and reliability of determining dual-gun charging, thereby improving the insulation detection accuracy of dual-gun charging and enhancing the safety and operation convenience of dual-gun charging.

[0199] In another optional embodiment, as Figure 4 shown, the charging parameter information includes the requested charging current, requested charging voltage, constant current accuracy, constant voltage accuracy of the electric product, and the battery voltage of the electric product;

[0200] The specific way for the judgment module 3011 to determine the voltage fluctuation value corresponding to the current charging sub-process includes:

[0201] When the current charging sub-process includes a constant current charging sub-process, determine the single-gun requested current according to the requested charging current, and determine the current fluctuation range corresponding to the constant current charging sub-process according to the single-gun requested current and the constant current accuracy;

[0202] Determine the voltage fluctuation value corresponding to the constant current charging sub-process according to the current fluctuation range;

[0203] When the current charging sub-process includes a constant voltage charging sub-process, determine the voltage fluctuation range corresponding to the constant voltage charging sub-process according to the requested charging voltage, constant voltage accuracy, and battery voltage;

[0204] Determine the voltage fluctuation value corresponding to the constant voltage charging sub-process according to the voltage fluctuation range.

[0205] It can be seen that implementing Figure 4The described European standard multi-gun parallel charging system can, when the current charging sub-process includes a constant current charging sub-process, determine the single-gun requested current by the charging pile according to the requested charging current, and determine the current fluctuation range corresponding to the constant current charging sub-process according to the single-gun requested current and the constant current accuracy. The charging pile determines the voltage fluctuation value corresponding to the constant current charging sub-process according to the current fluctuation range. When the current charging sub-process includes a constant voltage charging sub-process, the charging pile determines the voltage fluctuation range corresponding to the constant voltage charging sub-process according to the requested charging voltage, the constant voltage accuracy, and the battery voltage. The charging pile determines the voltage fluctuation value corresponding to the constant voltage charging sub-process according to the voltage fluctuation range. It can determine the voltage fluctuation value based on different charging states, improving the accuracy of determining the voltage fluctuation value and enhancing the precision and safety of implementing the voltage downward fluctuation operation.

[0206] In yet another alternative embodiment, as Figure 4 shown, when the current charging sub-process includes a constant current charging sub-process, the current fluctuation range includes:

[0207] a*i*I 请 ≤I≤b*I 请

[0208] When the current charging sub-process includes a constant voltage charging sub-process, the voltage fluctuation range includes:

[0209] c*v*V 电池 ≤V≤(V 请 -V 电池 )

[0210] Wherein, a, b, and c represent preset coefficients, I 请 represents the requested charging current, V 请 represents the requested charging voltage, i represents the constant current accuracy, v represents the constant voltage accuracy, and V 电池 represents the battery voltage.

[0211] It can be seen that implementing Figure 4 the described European standard multi-gun parallel charging system can determine the voltage fluctuation value based on different charging states, improving the accuracy of determining the voltage fluctuation value and enhancing the precision and safety of implementing the voltage downward fluctuation operation.

[0212] In yet another alternative embodiment, as Figure 4 shown, the specific manner in which the sending module 3021 sends the charging parameter information to the charging pile includes:

[0213] When it is detected that the first charging gun in the charging pile is inserted into the electric product, the electric product performs a product insulation detection operation;

[0214] When the product insulation detection operation result corresponding to the product insulation detection operation meets the preset product insulation detection passing condition, a preset time window is started to detect whether a second charging gun in the charging pile is inserted into the electric product within the preset time window;

[0215] When the second charging gun is not inserted into the electric vehicle within the preset time window, the electric product sends charging parameter information to the charging pile;

[0216] When the second charging gun is inserted into the electric vehicle within the preset time window, the electric product sends charging parameter information to the charging pile.

[0217] It can be seen that implementing Figure 4 The described European standard multi-gun parallel charging system can, when the electric product receives the first charging identifier sent by the charging pile, perform a product insulation detection operation through the electric product, and when the product insulation detection operation result corresponding to the product insulation detection operation meets the preset product insulation detection passing condition, detect whether it receives the second charging identifier sent by the charging pile. When the electric product receives the second charging identifier sent by the charging pile, the electric product sends charging parameter information to the charging pile, realizing vehicle-end insulation detection while respectively feeding back vehicle-end battery information and charging request information to the two charging guns, improving the charging efficiency and accuracy of dual-gun charging, thereby enhancing the safety and operation convenience of dual-gun charging and improving the user charging experience.

[0218] In another alternative embodiment, as Figure 4 shown, when the first charging gun and the second charging gun charge the electric product simultaneously, the specific ways for the control module 3012 to control the first charging gun and the second charging gun to charge the electric product include:

[0219] When the first charging gun and the second charging gun charge the electric product simultaneously, control the main charging gun to perform a charging gun insulation detection operation, where the main charging gun refers to the charging gun that is inserted into the electric product first among the first charging gun and the second charging gun;

[0220] When the charging gun insulation detection result corresponding to the charging gun insulation detection operation meets the preset charging gun insulation detection passing condition, control the first charging gun and the second charging gun to charge the electric product;

[0221] In addition, the charging pile 301 further includes a display module 3013, where:

[0222] The display module 3013 is used to display a charging confirmation interface to the user and receive the charging confirmation information input by the user through the charging confirmation interface when the first charging gun and the second charging gun do not charge the electric product 302 simultaneously. The charging confirmation information includes the charging gun identity information of the charging gun that needs to start charging;

[0223] The control module 3012 is further configured to control the charging gun that needs to start charging to perform a single-gun charging operation according to the charging confirmation information.

[0224] It can be seen that when implementing Figure 4 the described European standard multi-gun parallel charging system, when the first charging gun and the second charging gun charge the electric product simultaneously, the charging pile controls the main charging gun to perform a charging gun insulation detection operation. When the charging gun insulation detection result corresponding to the charging gun insulation detection operation meets the preset charging gun insulation detection passing condition, the charging pile controls the first charging gun and the second charging gun to charge the electric product. It can perform insulation detection only on the charging gun inserted first during dual-gun charging, realize dynamic adjustment of the insulation detection strategy, improve the insulation detection accuracy of dual-gun charging, and further improve the safety and operation convenience of dual-gun charging, enhancing the user charging experience; when the first charging gun and the second charging gun do not charge the electric product simultaneously, the charging pile displays a charging confirmation interface to the user and receives the charging confirmation information input by the user through the charging confirmation interface. The charging confirmation information includes the charging gun identity information of the charging gun that needs to start charging. The charging pile controls the charging gun that needs to start charging to perform a single-gun charging operation according to the charging confirmation information, performs single-gun charging based on the user instruction, meets the user's charging needs, realizes single-gun and dual-gun dynamic insulation detection, improves the charging safety while enhancing the user experience.

[0225] Embodiment 4

[0226] An embodiment of the present invention discloses an electric vehicle, which includes at least two European standard charging sockets, a vehicle controller, and a battery management system. Each European standard charging socket includes a communication module, wherein:

[0227] When detecting a charging signal corresponding to at least one target European standard charging socket, the communication function of the communication module of other European standard charging sockets except the target European standard charging socket in each European standard charging socket is turned off;

[0228] Moreover, the operation of turning off the communication function of the communication module of other European standard charging sockets except the target European standard charging socket in each European standard charging socket may include the following operations:

[0229] The communication function of the communication module of other European standard charging sockets except the target European standard charging socket in each European standard charging socket is turned off through the vehicle controller or the battery management system;

[0230] Moreover, when detecting a charging end signal corresponding to each European standard charging socket, the vehicle controller or the battery management system performs a communication restoration operation on each European standard charging socket whose communication function is turned off.

[0231] In an embodiment of the present invention, optionally, the electric vehicle includes at least two charging piles, that is, the electric vehicle can support at least single-gun charging and double-gun charging, and can also support multi-gun charging with three or more guns. The electric vehicle can include electric vehicles, electric construction machinery, etc. Electric construction machinery can include one or more of electric engineering transport vehicles, electric cranes, electric excavators, electric bulldozers, electric rollers, electric loaders, electric engineering rescue vehicles, and electric trailers, etc., which are not limited in the present invention.

[0232] In an embodiment of the present invention, optionally, each European standard charging socket of the electric vehicle includes a corresponding communication module, and each communication module supports an independent communication function. When a charging signal corresponding to at least one target European standard charging socket is detected, the communication function of the communication module of each target European standard charging socket can be turned on, and the communication functions of the communication modules of other European standard charging sockets except the target European standard charging socket in each European standard charging socket can be turned off, which is not limited in the present invention.

[0233] In this optional embodiment, optionally, the electric vehicle can include a vehicle control unit (VCU) and a battery management system (BMS).

[0234] It can be seen that implementing the embodiments of the present invention can achieve the interlock between the energized charging sockets and the non-energized charging sockets in the electric vehicle by turning off the communication functions of the communication modules of the charging sockets, avoiding the insulation detection conflict problem during multi-gun charging, and improving the charging safety and efficiency of the electric vehicle; by the vehicle control unit or the battery management system turning off the communication functions of the communication modules of other European standard charging sockets except the target European standard charging socket in each European standard charging socket, the interlock between the energized charging sockets and the non-energized charging sockets in the electric vehicle is achieved, avoiding the insulation detection conflict problem during multi-gun charging, and improving the charging safety and efficiency of the electric vehicle. And when a charging end signal corresponding to each European standard charging socket is detected, the vehicle control unit or the battery management system performs a communication recovery operation on each European standard charging socket with the communication function turned off, ensuring the normal operation of the charging sockets of the electric vehicle and improving the intelligent level and convenience of vehicle charging.

[0235] Embodiment Five

[0236] An embodiment of the present invention discloses a charging pile, which includes at least two charging guns and a charging pile controller. Each charging gun includes a corresponding insulation detection module, wherein:

[0237] The charging pile controller is used to control the detection timing of each insulation detection module.

[0238] In an embodiment of the present invention, optionally, the charging pile may be a European standard charging pile or a national standard charging pile. The charging pile may include at least two charging guns and a charging pile controller, or may include more than two charging guns. Each charging gun includes a corresponding insulation detection module, and the detection timing of each insulation detection module can be controlled by the charging pile controller. The insulation detection process is in milliseconds, and the interval can be within half an hour, which is not limited in the present invention.

[0239] It can be seen that implementing the embodiment of the present invention can control the detection timing of each insulation detection module through the charging pile controller, eliminate the insulation detection conflict of multiple charging guns in the same charging pile, and improve the charging safety and reliability of the charging pile.

[0240] In an optional embodiment, when it is detected that the first charging gun in the charging pile is inserted into the electric vehicle and charging information is received, a preset time window is started to detect whether other charging guns in the charging pile are inserted into the electric vehicle within the preset time window;

[0241] When no other charging guns are inserted into the electric vehicle within the preset time window, control the first charging gun to charge the electric vehicle;

[0242] When at least one other charging gun is inserted into the electric vehicle within the preset time window, determine whether the charging information of each charging gun inserted into the electric vehicle is consistent. When there is a charging gun with inconsistent charging information, control the first charging gun and each other charging gun with the same charging information as the first charging gun to charge the electric vehicle;

[0243] When the charging information of each charging gun inserted into the electric vehicle is consistent, extend the preset time window. When it is detected that no other charging guns in the charging pile are inserted into the electric vehicle within the extended preset time window, control all the charging guns inserted into the electric vehicle to charge the electric vehicle.

[0244] In this optional embodiment, optionally, the first charging gun in the charging pile may represent the charging gun that is first inserted into the electric vehicle in the charging pile. When it is detected that the first charging gun in the charging pile is inserted into the electric vehicle and charging information is received, a preset time window is started to detect whether other charging guns in the charging pile are inserted into the electric vehicle within the preset time window. When no other charging guns are inserted into the electric vehicle within the preset time window, control the first charging gun to charge the electric vehicle, that is, perform single-gun charging on the electric vehicle through the first charging gun, which is not limited in this embodiment.

[0245] In this optional embodiment, optionally, when at least one other charging gun is inserted into the electric vehicle within the preset time window, it is determined whether the charging information of each charging gun inserted into the electric vehicle is consistent. When there is a charging gun with inconsistent charging information, the first charging gun and each other charging gun with the same charging information as the first charging gun are controlled to charge the electric vehicle. When the charging information of each charging gun inserted into the electric vehicle is consistent, the preset time window is extended. When it is detected that no other charging gun in the charging pile is inserted into the electric vehicle within the extended preset time window, all the charging guns inserted into the electric vehicle are controlled to charge the electric vehicle. Specifically:

[0246] When a second charging gun is inserted into the electric vehicle within the preset time window, it can be determined whether the charging information of the two charging guns is consistent. When they are inconsistent, the electric vehicle is charged with a single gun through the first charging gun. When they are consistent, the preset time window is extended. When a third charging gun is inserted into the electric vehicle within the extended preset time window, it is determined whether the charging information of the three charging guns inserted into the electric vehicle is consistent. When the charging information of the third charging gun is inconsistent with that of the first two charging guns, the electric vehicle is charged with two guns through the first charging gun and the second charging gun. When the charging information of the three charging guns inserted into the electric vehicle is consistent, the preset time window is continuously extended to detect the fourth charging gun, and the above process of detection - judgment - decision is cyclically executed until no newly inserted charging gun is detected within the extended preset time window. This embodiment is not limited.

[0247] It can be seen that implementing this optional embodiment can achieve multi - gun parallel charging and start simultaneously through this charging pile, which matches the vehicle technology. Moreover, each gun has independent communication and insulation detection, improving safety and reliability.

[0248] In another optional embodiment, for each charging gun inserted from the charging pile into the electric vehicle, the detection timing of the insulation detection module of this charging gun is determined according to the order before and after the gun is inserted into the electric vehicle.

[0249] In this optional embodiment, optionally, the detection timing of the insulation detection module of the charging gun can be determined by the order before and after the gun is inserted into the electric vehicle during dual - gun or multi - gun parallel charging.

[0250] It can be seen that implementing this optional embodiment can prevent insulation detection conflicts of multiple charging guns in the same charging pile, improving the charging safety and reliability of the charging pile.

[0251] Embodiment Six

[0252] Please refer to Figure 5 , Figure 5 which is a schematic structural diagram of a European - standard multi - gun parallel charging device disclosed in an embodiment of the present invention. As Figure 5As shown, the European standard multi-gun parallel charging device may include:

[0253] A memory 401 storing executable program code;

[0254] A processor 402 coupled to the memory 401;

[0255] The processor 402 invokes the executable program code stored in the memory 401 and executes the steps in the European standard multi-gun parallel charging method described in Embodiment 1 or Embodiment 2 of the present invention.

[0256] Embodiment 7

[0257] Embodiment 1 of the present invention discloses a computer storage medium storing computer instructions which, when invoked, are used to execute the steps in the European standard multi-gun parallel charging method described in Embodiment 1 or Embodiment 2 of the present invention.

[0258] Embodiment 8

[0259] Embodiment 1 of the present invention discloses a computer program product including a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a computer to execute the steps in the European standard multi-gun parallel charging method described in Embodiment 1 or Embodiment 2.

[0260] The device embodiments described above are merely illustrative. The modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical modules, that is, they may be located in one place or distributed to multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. A person of ordinary skill in the art can understand and implement it without creative labor.

[0261] Through the above specific descriptions of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on such an understanding, the essence of the above technical solution, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, and the storage medium includes read-only memory (ROM), random access memory (RAM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), one-time programmable read-only memory (OTPROM), electrically-erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc memories, magnetic disk memories, tape memories, or any other medium that can be used to carry or store data and is computer-readable.

[0262] Finally, it should be noted that: The disclosed European standard multi-gun parallel charging method and system, electric vehicle, charging pile, and device of the embodiments of the present invention are only the preferred embodiments of the present invention, and are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An EU standard multi-gun parallel charging method, characterized in that The method is applied to a European standard multi-gun parallel charging system, which includes a charging pile and an electric product. The charging pile includes at least a first charging gun and a second charging gun. The method includes: The electric product sends charging parameter information to the charging pile; The charging pile determines whether the first charging gun and the second charging gun charge the electric product simultaneously according to the charging parameter information and a preset voltage fluctuation detection instruction; When the first charging gun and the second charging gun charge the electric product simultaneously, the charging pile controls the first charging gun and the second charging gun to charge the electric product.

2. The Euro-standard multi-gun parallel charging method according to claim 1, wherein The charging parameter information includes first charging parameter information corresponding to the first charging gun and second charging parameter information corresponding to the second charging gun; The charging pile determines whether the first charging gun and the second charging gun charge the electric product simultaneously according to the charging parameter information and a preset voltage fluctuation detection instruction, including: The charging pile determines the difference in charging parameter information between the first charging parameter information and the second charging parameter information, and determines whether the difference in charging parameter information is less than a preset threshold of the difference in charging parameter information; When the difference in charging parameter information is less than the threshold of the difference in charging parameter information, the charging pile is triggered to execute the operation of controlling the first charging gun and the second charging gun to charge the electric product; During the process of the first charging gun and the second charging gun charging the electric product, the charging pile determines whether the first charging gun and the second charging gun charge the electric product simultaneously according to a preset voltage fluctuation detection instruction.

3. The method for parallel charging of multiple European standard guns according to claim 2, characterized in that During the process of the first charging gun and the second charging gun charging the electric product, the charging pile determines whether the first charging gun and the second charging gun charge the electric product simultaneously according to a preset voltage fluctuation detection instruction, including: During the process of the first charging gun and the second charging gun charging the electric product, the charging pile detects the current charging sub-process, and the current charging sub-process includes a constant current charging sub-process or a constant voltage charging sub-process; The charging pile determines the voltage fluctuation value corresponding to the current charging sub-process, and the voltage fluctuation value includes a voltage downward fluctuation value; The charging pile controls the first charging gun to reduce the first output voltage by the voltage downward fluctuation value to obtain a detected output voltage corresponding to the first charging gun; The charging pile detects the second output voltage of the second charging gun and determines whether the second output voltage matches the detected output voltage; When the second output voltage matches the detected output voltage, the charging pile determines that the first charging gun and the second charging gun charge the electric product simultaneously.

4. The European standard multi-gun parallel charging method according to claim 3, characterized in that The charging parameter information includes the requested charging current, requested charging voltage, constant current accuracy, constant voltage accuracy of the electric product, and the battery voltage of the electric product; The charging pile determines the voltage fluctuation value corresponding to the current charging sub-process, including: When the current charging sub-process includes the constant-current charging sub-process, the charging pile determines the single-gun requested current according to the requested charging current, and determines the current fluctuation range corresponding to the constant-current charging sub-process according to the single-gun requested current and the current stabilization accuracy; The charging pile determines the voltage fluctuation value corresponding to the constant-current charging sub-process according to the current fluctuation range; When the current charging sub-process includes the constant-voltage charging sub-process, the charging pile determines the voltage fluctuation range corresponding to the constant-voltage charging sub-process according to the requested charging voltage, the voltage stabilization accuracy, and the battery voltage; The charging pile determines the voltage fluctuation value corresponding to the constant-voltage charging sub-process according to the voltage fluctuation range.

5. The Euro-standard multi-gun parallel charging method according to claim 4, wherein When the current charging sub-process includes the constant-current charging sub-process, the current fluctuation range includes: a*i*I 请 ≤I≤b*I 请 When the current charging sub-process includes the constant-voltage charging sub-process, the voltage fluctuation range includes: c*v*V 电池 ≤V≤(V 请 -V 电池 ) where a, b, and c represent preset coefficients, I 请 represents the requested charging current, V 请 represents the requested charging voltage, i represents the constant current accuracy, v represents the constant voltage accuracy, and V 电池 represents the battery voltage.

6. The Euro-standard multi-gun parallel charging method according to any one of claims 1-5, characterized in that The electric product sends charging parameter information to the charging pile, including: When it is detected that the first charging gun in the charging pile is inserted into the electric product, the electric product performs a product insulation detection operation; When the product insulation detection operation result corresponding to the product insulation detection operation meets the preset product insulation detection passing condition, a preset time window is started to detect whether the second charging gun in the charging pile is inserted into the electric product within the preset time window; When the second charging gun is not inserted into the electric vehicle within the preset time window, the electric product sends charging parameter information to the charging pile; When the second charging gun is inserted into the electric vehicle within the preset time window, the electric product sends charging parameter information to the charging pile.

7. The European standard multi-gun parallel charging method according to any one of claims 1-5, characterized in that, When the first charging gun and the second charging gun charge the electric product simultaneously, the charging pile controls the first charging gun and the second charging gun to charge the electric product, including: When the first charging gun and the second charging gun charge the electric product simultaneously, the charging pile controls the main charging gun to perform a charging gun insulation detection operation, where the main charging gun represents the charging gun that is inserted into the electric product earlier among the first charging gun and the second charging gun; When the charging gun insulation detection result corresponding to the charging gun insulation detection operation meets the preset charging gun insulation detection passing condition, the charging pile controls the first charging gun and the second charging gun to charge the electric product; And when the first charging gun and the second charging gun do not charge the electric product simultaneously, the method further includes: The charging pile displays a charging confirmation interface to the user and receives the charging confirmation information input by the user through the charging confirmation interface, where the charging confirmation information includes the charging gun identity information of the charging gun that needs to start charging; The charging pile controls the charging gun that needs to start charging to perform a single-gun charging operation according to the charging confirmation information.

8. An EU standard multi-gun parallel charging system, characterized in that, The system includes a charging pile and an electric product. The charging pile includes at least a first charging gun and a second charging gun, and the charging pile includes a judgment module and a control module. The electric product includes a sending module, where: The sending module is configured to send charging parameter information to the charging pile; The judgment module is configured to judge whether the first charging gun and the second charging gun charge the electric product simultaneously according to the charging parameter information and a preset voltage fluctuation detection instruction; The control module is configured to control the first charging gun and the second charging gun to charge the electric product when the first charging gun and the second charging gun charge the electric product simultaneously.

9. An electric vehicle, characterized in that, The electric vehicle includes at least two European standard charging sockets, a vehicle controller and a battery management system. Each European standard charging socket includes a communication module, where: When a charging signal corresponding to at least one target European standard charging socket is detected, the communication function of the communication module of each European standard charging socket other than the target European standard charging socket is turned off; Moreover, turning off the communication function of the communication module of each European standard charging socket other than the target European standard charging socket includes: Turning off the communication function of the communication module of each European standard charging socket other than the target European standard charging socket through the vehicle controller or the battery management system; Moreover, when a charging end signal corresponding to each European standard charging socket is detected, a communication restoration operation is performed on each European standard charging socket whose communication function has been turned off through the vehicle controller or the battery management system.

10. A charging pile, characterized in that, The charging pile includes at least two charging guns and a charging pile controller. Each charging gun includes a corresponding insulation detection module, where: The charging pile controller is configured to control the detection timing of each insulation detection module.

11. The charging pile according to claim 10, characterized in that, When it is detected that the first charging gun in the charging pile is inserted into the electric vehicle and charging information is received, a preset time window is started to detect whether any other charging guns in the charging pile are inserted into the electric vehicle within the preset time window; When no other charging guns in the charging pile are inserted into the electric vehicle within the preset time window, the first charging gun is controlled to charge the electric vehicle; When at least one other charging gun in the charging pile is inserted into the electric vehicle within the preset time window, it is judged whether the charging information of each charging gun inserted into the electric vehicle is consistent. When there is a charging gun with inconsistent charging information, the first charging gun and each other charging gun whose charging information is consistent with that of the first charging gun are controlled to charge the electric vehicle; When the charging information of each charging gun inserted into the electric vehicle is consistent, the preset time window is extended. When it is detected that no other charging guns in the charging pile are inserted into the electric vehicle within the extended preset time window, all the charging guns inserted into the electric vehicle are controlled to charge the electric vehicle.

12. The charging pile according to claim 11, characterized in that, For each charging gun inserted into the electric vehicle in the charging pile, determine the detection timing of the insulation detection module of the charging gun according to the sorting before and after the charging gun is inserted into the electric vehicle.

13. A European standard multi-gun parallel charging device, characterized in that, The device includes: A memory storing executable program code; A processor coupled to the memory; The processor calls the executable program code stored in the memory and executes the European standard multi-gun parallel charging method according to any one of claims 1-7.

14. A computer storage medium, characterized in that, The computer storage medium stores computer instructions, which are used to execute the European standard multi-gun parallel charging method according to any one of claims 1-7 when the computer instructions are called.

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