Charging method, device, power cabinet and system

Abstract

The invention discloses a charging method, device, power cabinet and system, and the charging method comprises the steps: determining resource borrowing information according to a multi-gun charging request sent by a target vehicle; according to the broadcast information and the resource borrowing information of each slave power cabinet, a target power cabinet is selected from the multiple slave power cabinets, the slave power cabinets are power cabinets except a main power cabinet in the charging system, and the main power cabinet is a power cabinet which receives a multi-gun charging request in the system; and the resource borrowing request is sent to the target power cabinet, and the target power cabinet responds to the resource borrowing request and charges the target vehicle according to a response result. Through the mode, the flexibility and the resource utilization rate of the charging system can be improved while the high-power networking requirement can be met, the complexity and the configuration cost of the system are effectively reduced, the power scheduling problem in the charging process is simplified, the expansibility and the maintenance convenience of the system are enhanced, and the practicability is high. Therefore, the overall charging efficiency and the service quality are improved.

Description

Technical Field

[0001] The present application relates to the field of charging technology, and in particular to a charging method, device, power cabinet, and system. Background Art

[0002] While existing designs employing a single, oversized power cabinet offer advantages in terms of integration and unit power cost, they face major challenges: The high cost of AC cables from the transformer to the power cabinet, especially when achieving high power transmission at low voltages, and the large number of contactors required to achieve fully flexible scheduling due to the large number of power modules contained within the cabinet, significantly increasing both cabinet and contactor costs. Furthermore, the cost and line losses of the DC cables running from the cabinet to the charging terminal are significant issues. Attempts to address these issues by splitting the oversized power cabinet into two and connecting them via a DC busbar presented new challenges, including the physical limitations of the DC busbar, the high cost of copper busbars, and the limited flexibility of on-site construction.

[0003] The above content is only used to assist in understanding the technical solution of this application and does not constitute an admission that the above content is prior art. Summary of the Invention

[0004] The main purpose of this application is to provide a charging method, device, power cabinet and system, aiming to solve the technical problem of how to reduce the design cost and complexity of the power cabinet while ensuring high power output capability.

[0005] To achieve the above-mentioned object, the present application proposes a charging method, which is applied to a charging system, wherein the charging system includes a plurality of power cabinets, and communication connections are achieved between the power cabinets;

[0006] The charging method includes:

[0007] Upon receiving a multi-gun charging request sent by a target vehicle, determining resource borrowing information according to the multi-gun charging request;

[0008] selecting at least one target power cabinet from a plurality of slave power cabinets according to the broadcast information of each slave power cabinet and the resource borrowing information, wherein the slave power cabinet is a power cabinet other than the master power cabinet in the charging system, and the master power cabinet is a power cabinet in the charging system that receives the multi-gun charging request;

[0009] A resource borrowing request is sent to the target power cabinet, so that the target power cabinet responds to the resource borrowing request and charges the target vehicle according to the response result.

[0010] In one embodiment, the step of selecting at least one target power cabinet from a plurality of slave power cabinets according to the broadcast information of each slave power cabinet and the resource borrowing information includes:

[0011] Extract the broadcast information of each slave power cabinet and determine the working status frame of each slave power cabinet;

[0012] determining at least one power cabinet to be selected from a plurality of slave power cabinets according to the working status frames of each slave power cabinet;

[0013] At least one target power cabinet is determined from a plurality of to-be-selected power cabinets according to the resource borrowing information.

[0014] In one embodiment, the step of determining at least one target power cabinet from a plurality of candidate power cabinets according to the resource borrowing information includes:

[0015] Determine the borrowed quantity of charging guns according to the resource borrowing information;

[0016] Determine the borrowing priority of each power cabinet to be selected based on the charging available power of each power cabinet to be selected;

[0017] At least one target power cabinet is determined from the plurality of power cabinets to be selected according to the borrowing priority of each power cabinet to be selected and the borrowing quantity of the charging guns.

[0018] In one embodiment, before the step of sending the resource borrowing request to the target power cabinet so that the target power cabinet responds to the resource borrowing request and charging the target vehicle according to the response result, the method further includes:

[0019] Determining a charging request power for the target vehicle according to the multi-gun charging request;

[0020] Determining the borrowed charging power according to the current available power of the main power cabinet and the charging request power;

[0021] A resource borrowing request corresponding to the target power cabinet is generated according to the charging borrowed power.

[0022] In one embodiment, after the step of sending the resource borrowing request to the target power cabinet so that the target power cabinet responds to the resource borrowing request and charges the target vehicle according to the response result, the method further includes:

[0023] Upon receiving a borrowing response message from the target power cabinet within a preset time period, responding to the multi-gun charging request and charging the target vehicle according to the response result;

[0024] Upon receiving charging completion information of the target vehicle, generating a resource release instruction;

[0025] The resource release instruction is sent to the target power cabinet, so that the target power cabinet ends charging the target vehicle according to the resource release instruction.

[0026] In one embodiment, before the step of determining resource borrowing information according to the multi-gun charging request, the method further includes:

[0027] Determining the charging request power and the requested number of charging guns for the target vehicle according to the multi-gun charging request;

[0028] When the requested number of charging guns does not exceed the number of available charging guns in the main power cabinet, obtaining the current available power;

[0029] When the currently available power is less than the charging request power, resource borrowing information is generated.

[0030] In one embodiment, after the step of sending the resource borrowing request to the target power cabinet so that the target power cabinet responds to the resource borrowing request and charges the target vehicle according to the response result, the method further includes:

[0031] Upon receiving the resource recovery request sent by the target power cabinet, responding to the resource recovery request and obtaining charging progress information of the target vehicle;

[0032] The step of selecting at least one target power cabinet from a plurality of slave power cabinets according to the broadcast information of each slave power cabinet and the resource borrowing information is re-executed according to the charging progress information.

[0033] In addition, to achieve the above-mentioned purpose, the present application also proposes a charging device, the charging device comprising: a processing module, configured to, upon receiving a multi-gun charging request sent by a target vehicle, determine resource borrowing information according to the multi-gun charging request;

[0034] a selection module, configured to select at least one target power cabinet from a plurality of slave power cabinets according to the broadcast information of each slave power cabinet and the resource borrowing information, wherein the slave power cabinet is a power cabinet other than the master power cabinet in the charging system, and the master power cabinet is a power cabinet in the charging system that receives the multi-gun charging request;

[0035] The sending module is used to send a resource borrowing request to the target power cabinet, so that the target power cabinet responds to the resource borrowing request and charges the target vehicle according to the response result.

[0036] In addition, to achieve the above-mentioned purpose, the present application also proposes a power cabinet, which includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the charging method described above.

[0037] In addition, to achieve the above-mentioned purpose, the present application also proposes a charging system, which includes multiple power cabinets, and communication connections are achieved between the power cabinets.

[0038] In addition, to achieve the above-mentioned purpose, the present application also proposes a storage medium, which is a computer-readable storage medium. A computer program is stored on the storage medium, and when the computer program is executed by a processor, the steps of the charging method described above are implemented.

[0039] In addition, to achieve the above-mentioned purpose, the present application also provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, it implements the steps of the charging method described above.

[0040] The present application provides a charging method, which determines resource borrowing information according to the multi-gun charging request sent by the target vehicle when receiving the multi-gun charging request; selects at least one target power cabinet from multiple slave power cabinets according to the broadcast information of each slave power cabinet and the resource borrowing information, the slave power cabinet is a power cabinet other than the master power cabinet in the charging system, and the master power cabinet is a power cabinet in the charging system that receives the multi-gun charging request; sends a resource borrowing request to the target power cabinet, so that the target power cabinet responds to the resource borrowing request and charges the target vehicle according to the response result. Through the above method, communication connection is achieved between the power cabinets, and there is a dynamic collaborative charging resource scheduling mechanism between the master and slave power cabinets, which can meet the needs of high-power networking while not only improving the flexibility and resource utilization of the charging system, but also effectively reducing the system complexity and configuration cost, and simplifying the power scheduling problem in the charging process, enhancing the system scalability and maintenance convenience, thereby improving the overall charging efficiency and service quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0042] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0043] Figure 1 A schematic diagram of a flow chart provided for the first embodiment of the charging method of the present application;

[0044] Figure 2 A schematic diagram showing the connection of a high-power cabinet provided in Example 1 of the charging method of this application;

[0045] Figure 3 A schematic diagram of the connection process of the DC busbar and cabinets provided in Example 1 of the charging method of this application;

[0046] Figure 4 A schematic diagram of the connection flow of the charging system provided in Example 1 of the charging method of this application;

[0047] Figure 5 A schematic diagram of the flow chart provided for the second embodiment of the charging method of this application;

[0048] Figure 6 A schematic diagram of the flow chart provided for the third embodiment of the charging method of this application;

[0049] Figure 7 This is a schematic diagram of the module structure of the charging device according to an embodiment of the present application;

[0050] Figure 8 Schematic diagram of the device structure of the hardware operating environment involved in the charging method in the embodiment of the present application.

[0051] The purpose, features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0052] It should be understood that the specific embodiments described herein are merely used to explain the technical solutions of the present application and are not intended to limit the present application.

[0053] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0054] The main solution of the embodiment of the present application is: when a multi-gun charging request sent by a target vehicle is received, resource borrowing information is determined according to the multi-gun charging request; at least one target power cabinet is selected from multiple slave power cabinets according to the broadcast information of each slave power cabinet and the resource borrowing information, and the slave power cabinet is a power cabinet other than the main power cabinet in the charging system, and the main power cabinet is a power cabinet in the charging system that receives the multi-gun charging request; a resource borrowing request is sent to the target power cabinet so that the target power cabinet responds to the resource borrowing request, and the target vehicle is charged according to the response result.

[0055] In the existing technology, in order to meet the requirements of ultra-high power (e.g., megawatt-level) charging, there is a design of an ultra-large single power cabinet. Although the design of an ultra-large single power cabinet has certain advantages in terms of integration and unit power cost, it faces the following major problems: the AC cable from the transformer to the power cabinet is expensive, especially when achieving high power (e.g., 2.5 megawatts) transmission at low voltage, even if the current cable is divided into strands, the cost of the configured cable is also very high; because the power cabinet contains a large number of power modules, the number of contactors required to achieve full flexible scheduling is huge, resulting in a significant increase in cabinet and contactor costs; in addition, the cost and line loss of the DC cable between the power cabinet and the charging terminal are also issues that cannot be ignored. When the number of contactors is too large, at least the following two problems will be faced: the scheduling complexity exponentially increases, and there is currently no matching test environment, which places high requirements on software and a high risk of vulnerabilities; and the maintenance difficulty is greatly increased.

[0056] To solve the problems of ultra-large power cabinets, attempts are being made to split the cabinet into two and connect them via a DC bus. This reduces the complexity of the power cabinet and allows for flexible configuration on site. However, there are also the following problems: the power cabinets are physically connected via a DC bus, which cannot be flexibly configured or disassembled after the connection is completed; the DC bus is connected in parallel via large copper busbars, which are expensive and less economical; and when maximum power is to be output, the position of the charging terminal / charging gun is fixed, resulting in poor on-site construction flexibility.

[0057] Large vehicles such as heavy trucks, ships, or aircraft are equipped with two or more charging ports that can support simultaneous charging with at least two charging guns. This high-power charging device can achieve megawatt-level fast charging at a lower cost and equipment by simultaneously charging the vehicle using multiple guns. For example, two 720kW charging cabinets, each equipped with a charging gun, can provide 1440kW of charging power.

[0058] However, the above existing methods of connecting the cabinets through a physical busbar or directly integrating two charging cabinets into one have problems with cost and resource utilization.

[0059] This application realizes communication connection between each power cabinet, and there is a dynamic collaborative charging resource scheduling mechanism between the master and slave power cabinets. It can meet the needs of high-power networking while not only improving the flexibility and resource utilization of the charging system, but also effectively reducing the system complexity and configuration cost, and simplifying the power scheduling problem in the charging process, enhancing the system scalability and maintenance convenience, thereby improving the overall charging efficiency and service quality.

[0060] It should be noted that the execution subject of this embodiment may be a computing service device with data processing, network communication, and program execution functions, such as a tablet computer, personal computer, mobile phone, etc., or an electronic device or power cabinet capable of implementing the above functions. The power cabinet is used as an example to illustrate this embodiment and the following embodiments.

[0061] Based on this, the present application embodiment provides a charging method, referring to Figure 1 , Figure 1 This is a flow chart of the first embodiment of the charging method of the present application.

[0062] In this embodiment, the charging method is applied to a charging system including a plurality of power cabinets, wherein communication is achieved between the power cabinets. The method includes steps S10 to S30:

[0063] Step S10: upon receiving a multi-gun charging request sent by a target vehicle, determining resource borrowing information according to the multi-gun charging request.

[0064] It should be noted that the executor of this embodiment is the main power cabinet in the charging system. There are multiple power cabinets in the charging system, and the output capacity of each power cabinet can be consistent or different according to actual needs. This embodiment does not restrict the consistency of output capacity between power cabinets. That is, it supports all power cabinets with the same output capacity configuration and is also compatible with designs with different output capacities between different power cabinets. However, in this embodiment, the maximum output power of each power cabinet is uniformly set to 1440kW for illustration.

[0065] It can be understood that the main power cabinet refers to the power cabinet that receives the multi-gun charging request sent by the target vehicle with ultra-high power charging demand, and the slave power cabinet refers to other power cabinets in the charging system except the main power cabinet.

[0066] In practice, the various power cabinets in the charging system communicate with each other through communication connections, enabling information exchange and collaborative work to ensure efficient system operation and flexible scheduling. Communication connection methods include, but are not limited to, the following: 1. CAN communication bus: The CAN bus has excellent anti-interference and error detection capabilities, making it suitable for basic status monitoring and control command transmission between power cabinets. 2. Wi-Fi: It can support complex network topologies, facilitating remote monitoring and management. 3. RS-485: A serial communication interface standard that can maintain stable data transmission over long distances.

[0067] It should be noted that the working principle of a single ultra-high power cabinet currently used in the prior art is as follows: Figure 2As shown, in the ultra-high power cabinet, a 2.5MW transformer can connect up to 60 40kW modules, with a maximum output power of 2.5MW. The target vehicle is charged via two charging guns, each with a maximum output of 1000V and 1200A, capable of meeting 2.4MW charging requirements. The TCU (Tariff Calculation Unit) and CCU (Charging Control Unit) communicate via the CAN bus. The PCU (Power Control Unit) is responsible for real-time control of the power conversion topology, ensuring efficient power supply and system stability. The CCU focuses on lifecycle management of the charging process, and the TCU is used to enable charging interaction between the user and the CCU.

[0068] It is understandable that the principle of the solution of connecting two power cabinets via a DC bus in the current prior art is as follows: Figure 3 As shown, a single rectifier power cabinet connects to 30 40kW modules through a 2.5MW transformer. A single cabinet can output a maximum of 1.2MW, and two cabinets can output 2.4MW together. The target vehicle is charged via two charging cables, each with a maximum output of 1000V and 1200A, capable of meeting the 2.4MW charging requirements. Charging cables A and B have two independent busbars, supporting dual-channel redundant power supply.

[0069] In a specific implementation, the charging system proposed in this embodiment is as follows: Figure 4 As shown in the figure, only two power cabinets in the charging system are shown. The power cabinets are connected through communication to achieve network cabinet connection. The maximum output capacity of a single power cabinet is 1440kW. Each power cabinet in the charging system integrates multiple battery packs and power conversion components to convert the input alternating current (AC) into direct current (DC) and output it to the vehicle. The TCU in the power cabinet can borrow charging guns from the TCUs in other power cabinets, and there is a communication protocol between the TCUs of each power cabinet. When charging the target vehicle through multiple power cabinets, the output ratio of each power cabinet can be determined based on the output capacity of each power cabinet, or each power cabinet can also charge the target vehicle at full power. The power cabinets can be combined arbitrarily to achieve high-power networking, and a single power cabinet can also operate independently.

[0070] It should be noted that a target vehicle refers to a vehicle with an ultra-high-power charging requirement and at least two charging ports. Specifically, a vehicle is considered a target vehicle if its requested charging power exceeds a preset power threshold and it can be connected to at least two charging ports for simultaneous charging. In this embodiment, the preset power threshold can be determined based on the maximum output capacity of a single power cabinet or adjusted based on actual needs, and this embodiment does not impose any restrictions on this.

[0071] It is understood that when a vehicle has a charging demand, it will initiate a request to the power cabinet through the power cabinet's TCU. The main power cabinet will first identify the charging request power included in the request to determine whether the vehicle is the target vehicle. If so, it will further detect the number of charging gun requests included in the request. If the number of charging gun requests is greater than the preset number, it is determined that a multi-gun charging request has been received from the target vehicle. In this embodiment, the number of charging gun requests refers to the number of charging guns that the target vehicle needs to use simultaneously; the charging request power refers to the power required by the target vehicle during this charging. The preset number is set to 1 in this embodiment, and can also be adjusted according to actual needs. This embodiment does not impose any restrictions on this.

[0072] In a specific implementation, resource borrowing information refers to the resources required to be borrowed from other slave power cabinets in the charging system to meet multi-charger charging requests. This resource borrowing information includes, but is not limited to, the number of charging guns required and the required charging power. In this embodiment, resource borrowing information can be generated based on the current available power of the master power cabinet.

[0073] Step S20: Select at least one target power cabinet from multiple slave power cabinets based on the broadcast information of each slave power cabinet and the resource borrowing information. The slave power cabinet is a power cabinet other than the master power cabinet in the charging system. The master power cabinet is a power cabinet in the charging system that receives the multi-gun charging request.

[0074] It should be noted that in the charging system, the TCU of each power cabinet uses the same communication protocol to implement the multi-pile, multi-gun, single-vehicle functionality. Each power cabinet's TCU and its corresponding CCU each have a corresponding serial number. In the communication protocol, the default address of each TCU is 0×En, where n is the TCU's serial number; the default address of each CCU is 0×Dn, where n is the CCU's serial number. The forwarding address rule is: the high byte of the address represents the TCU address, and the low byte represents the CCU address. For example, when TCU1 (E1) sends data to CCU1, the destination address is 21 (E1 high byte + 21 low byte), and the source address remains E1. When CCU1 replies through TCU 2 (E2), the destination address is converted to E1, and the source address is resolved to 21 (decomposed into E2 high byte + 21 low byte).

[0075] It is understandable that in order to ensure that the communication protocol does not conflict with the forwarding protocol frame PF, the protocol frame PF of all protocol messages is fixed to 0×FE. The command is distinguished by the first byte CMD of the data threshold. The highest bit of CMD indicates the direction, 0 indicates active initiation, and 1 indicates passive response.

[0076] In the charging system, after power-on initialization, the TCU of each power cabinet periodically broadcasts its operating status, allowing the TCUs of other power cabinets to obtain real-time information about their available resources. The power cabinet's broadcast information includes, but is not limited to, its operating status frame and its current available power. The operating status frame contains the real-time status of each charging plug in the power cabinet. The real-time status of a charging plug includes, but is not limited to, non-operational, idle, charging, and faulty states.

[0077] It should be noted that the protocol frame PF of the working status frame is 0xFE, the command field CMD is 0x01, the priority is 4, the data length is 8, the message period is set to 1000ms, and the timeout is set to 5s. Both the message period and the timeout can be adjusted as needed. For ease of understanding, Table 1 provides an example of the working status frame broadcast by the power cabinet. The meaning of each field in the table can also be adjusted as needed, and this embodiment does not limit this.

[0078] Table 1

[0079]

[0080]

[0081] It is understandable that the number of charging guns that need to be borrowed is determined based on the resource borrowing information, and the master power cabinet determines the working status of each slave power cabinet based on the broadcast information of each slave power cabinet. The master power cabinet will select a slave power cabinet with an idle charging gun and use it as the target power cabinet. At the same time, the sum of the current available power of all target power cabinets and the master power cabinet should be greater than or equal to the charging request power of the target vehicle. In this embodiment, when the number of charging guns that need to be borrowed is greater than 1, the principle of borrowing one charging gun from each slave power cabinet can be followed. The number of target power cabinets selected should be equal to the number of charging guns that need to be borrowed. The borrowing rules can also be adjusted according to actual needs, and this embodiment does not impose any restrictions on this.

[0082] Step S30: sending a resource borrowing request to the target power cabinet, so that the target power cabinet responds to the resource borrowing request and charges the target vehicle according to the response result.

[0083] It should be noted that after the master power cabinet determines the target power cabinet, it generates a resource borrowing request corresponding to the target power cabinet. The resource borrowing request contains the charging power to be dispatched to the target power cabinet and a charging gun borrowing frame. The charging gun borrowing frame has a protocol frame PF of 0×FE, a command field CMD of 0×02, a priority of 4, a data length of 8, a message period of 1000ms, and a timeout of 5s. Both the message period and timeout can be adjusted as needed.

[0084] It is understandable that the TCU of the main power cabinet sends a resource borrowing request to the TCU of the target power cabinet. The TCU of the target power cabinet responds to the resource borrowing request. If the target power cabinet agrees to the resource borrowing, it will return a gun borrowing response frame to the TCU of the main power cabinet. The protocol frame PF of the gun borrowing response frame is 0×FE, the command field CMD is 0×82, the priority is 4, the data length is 8, the message period is set to 1000ms, and the timeout is set to 5s. The message period and timeout can be adjusted according to needs.

[0085] In the specific implementation, when the target power cabinet successfully responds to the resource borrowing request sent by the master power cabinet, it will determine the charging power requested by the master power cabinet based on the resource borrowing request, and charge the target vehicle according to the charging power requested by the master power cabinet.

[0086] It should be noted that when the target power cabinet does not respond to the resource borrowing request sent by the master power cabinet, the master power cabinet needs to reselect the target power cabinet based on the broadcast information and resource borrowing information of other slave power cabinets.

[0087] In a feasible implementation manner, before step S30, steps A11 to A13 may also be included:

[0088] Step A11: Determine the charging request power of the target vehicle according to the multi-gun charging request.

[0089] Step A12: Determine the borrowed charging power according to the current available power of the main power cabinet and the charging request power.

[0090] It should be noted that after receiving the multi-gun charging request from the target vehicle, the main power cabinet determines the charging request power of the target vehicle according to the multi-gun charging request, and further obtains the current available power of the main power cabinet.

[0091] It can be understood that the borrowed charging power refers to the charging power that needs to be borrowed from other target power cabinets. When determining the borrowed charging power, it can be determined in the following ways, including but not limited to: 1. When the requested charging power is greater than the currently available power, the requested charging power is subtracted from the currently available power, and the remaining power is the borrowed charging power. At this time, the charging power provided by the main power cabinet when charging the target vehicle is the currently available power of the main power cabinet.

[0092] 2. When the charging request power is greater than the currently available power, the power required by a single power cabinet is calculated by dividing the charging request power by the number of charging gun requests. When the currently available power of the main power cabinet is greater than or equal to the power required by each power cabinet, the charging borrowed power = charging request power - power required by a single power cabinet. At this time, the charging power provided by the main power cabinet when charging the target vehicle is the power required by a single power cabinet. When the currently available power of the main power cabinet is less than the power required by each power cabinet, the charging borrowed power = charging request power - currently available power of the main power cabinet. At this time, the charging power provided by the main power cabinet when charging the target vehicle is the currently available power of the main power cabinet.

[0093] 3. If the requested charging power is less than or equal to the currently available power, the power required by a single power cabinet is calculated by dividing the requested charging power by the number of charging guns requested. The borrowed charging power = the requested charging power - the power required by a single power cabinet. In this case, the charging power provided by the master power cabinet when charging the target vehicle is the power required by a single power cabinet. The borrowed charging power can also be determined by other methods, which are not limited in this embodiment.

[0094] In the specific implementation, the master power cabinet can obtain the current available power of each slave power cabinet. When there is only one target power cabinet, the charging borrowed power must be less than or equal to the current available power of the target power cabinet; when there are multiple target power cabinets, the charging borrowed power must be less than or equal to the sum of the current available powers of all target power cabinets.

[0095] Step A13: Generate a resource borrowing request corresponding to the target power cabinet according to the charging borrowed power.

[0096] It should be noted that when there is a target power cabinet, the charging borrowed power is the charging power that the main power cabinet requests to be borrowed from the target power cabinet. At this time, a resource borrowing request corresponding to the target power cabinet is generated based on the charging borrowed power.

[0097] It is understandable that when there are multiple target power cabinets, the borrowed charging power of a single target power cabinet can be obtained by dividing the borrowed charging power by the number of target power cabinets. And according to the borrowed charging power of a single target power cabinet, a resource borrowing request corresponding to each target power cabinet is generated. In addition to the above-mentioned method of uniformly scheduling the borrowed charging power, other methods can also be used to determine the borrowed charging power of each target power cabinet, thereby generating a resource borrowing request corresponding to each target power cabinet. This embodiment does not limit the calculation method of the borrowed charging power of each target power cabinet.

[0098] In a feasible implementation manner, after step S30, steps B11 to B13 may also be included:

[0099] Step B11: When receiving the borrowing response information sent by the target power cabinet within a preset time period, respond to the multi-gun charging request and charge the target vehicle according to the response result.

[0100] It should be noted that the master power cabinet's TCU sends a resource borrowing request to the target power cabinet's TCU. The target power cabinet's TCU responds to the resource borrowing request. If the target power cabinet agrees to the resource borrowing, it returns a borrowing response message to the master power cabinet's TCU, which includes a gun borrowing response frame.

[0101] It can be understood that when the TCU of the main power cabinet receives the borrowing response information fed back by the TCU of the target power cabinet, it means that the target power cabinet has been charged according to the charging power in the resource borrowing request. The main power cabinet will respond to the multi-gun charging request synchronously and can charge the target vehicle according to the charging power agreed with other target power cabinets.

[0102] Step B12: upon receiving the charging completion information of the target vehicle, generating a resource release instruction.

[0103] It should be noted that when the target vehicle completes charging or actively terminates charging, it will send a charging completion message to the main power cabinet. At this time, the TCU of the main power cabinet will generate a resource release instruction. The resource release instruction includes a gun active release frame, which is used to actively return the charging gun borrowed from the target power cabinet. In this embodiment, the protocol frame PF of the gun active release frame is 0×FE, the command field CMD is 0×03, the priority is 4, the data length is 8, the message period is set to 1000ms, and the timeout is set to 5s. The message period and timeout can be adjusted according to needs.

[0104] Step B13: Sending the resource release instruction to the target power cabinet, so that the target power cabinet ends charging the target vehicle according to the resource release instruction.

[0105] It should be noted that the TCU of the main power cabinet will send a resource release instruction to the target power cabinet. The target power cabinet will end charging the target vehicle based on the resource release instruction, and at the same time return a gun active release response frame to the TCU of the main power cabinet. The protocol frame PF of the gun active release response frame is 0×FE, the instruction field CMD is 0×83, the priority is 4, the data length is 8, the message period is set to 1000ms, and the timeout period is set to 5s. The message period and timeout period can be adjusted according to needs.

[0106] In a feasible implementation manner, after step S30, steps C11 to C13 may also be included:

[0107] Step C11: upon receiving the resource recovery request sent by the target power cabinet, responding to the resource recovery request and acquiring charging progress information of the target vehicle.

[0108] It should be noted that when the target power cabinet and the main power cabinet are jointly charging the target vehicle, the target power cabinet may have insufficient resources and need to request the main power cabinet to reclaim borrowed resources. At this time, the TCU of the target power cabinet will send a resource recovery request to the TCU of the main power cabinet. The resource recovery request contains a gun active recovery frame, which is used to recover the charging gun belonging to the target power cabinet. The protocol frame PF of the gun active recovery frame is 0×FE, the command field CMD is 0×04, the priority is 4, the data length is 8, the message period is set to 1000ms, and the timeout is set to 5s. The message period and timeout can be adjusted according to needs.

[0109] It can be understood that when the TCU of the main power cabinet receives a resource recovery request, it will respond to the resource recovery request and send a gun active recovery response frame to the TCU of the target power cabinet. The protocol frame PF of the gun active recovery response frame is 0×FE, the instruction field CMD is 0×84, the priority is 4, the data length is 8, the message period is set to 1000ms, and the timeout period is set to 5s. The message period and timeout period can be adjusted according to needs.

[0110] In practice, when the master power cabinet's TCU responds to a resource reclaim request, indicating that the resources borrowed from the target power cabinet have been returned, the target vehicle's charging progress information must be obtained. This information includes, but is not limited to, the target vehicle's current remaining power and the current charged capacity.

[0111] Step C12: re-execute the step of selecting at least one target power cabinet from multiple slave power cabinets according to the broadcast information of each slave power cabinet and the resource borrowing information based on the charging progress information.

[0112] It should be noted that the charging progress information is extracted to determine the current remaining power of the target vehicle. When the current remaining power is greater than the power threshold, the target vehicle is charged only through the main power cabinet; when the current remaining power is less than or equal to the power threshold (for example, 90%), it is necessary to re-execute the step of selecting at least one target power cabinet from multiple slave power cabinets based on the broadcast information of the slave power cabinet and the resource borrowing information. Alternatively, when the relevant parameters in the charging progress information meet other conditions, such as when the current charged amount is less than or equal to the set threshold, it is also necessary to re-execute the step of selecting at least one target power cabinet from multiple slave power cabinets based on the broadcast information of the slave power cabinet and the resource borrowing information.

[0113] This embodiment provides a charging method, which determines resource borrowing information based on the multi-gun charging request sent by the target vehicle when receiving the multi-gun charging request; selects at least one target power cabinet from multiple slave power cabinets based on the broadcast information of each slave power cabinet and the resource borrowing information, wherein the slave power cabinet is a power cabinet other than the master power cabinet in the charging system, and the master power cabinet is a power cabinet in the charging system that receives the multi-gun charging request; sends a resource borrowing request to the target power cabinet so that the target power cabinet responds to the resource borrowing request and charges the target vehicle according to the response result. Through the above method, communication connection is achieved between the power cabinets, and a dynamic collaborative charging resource scheduling mechanism exists between the master and slave power cabinets, which can meet the needs of high-power networking while not only improving the flexibility and resource utilization of the charging system, but also effectively reducing the system complexity and configuration cost, and simplifying the power scheduling problem in the charging process, enhancing the system scalability and maintenance convenience, thereby improving the overall charging efficiency and service quality.

[0114] Based on the first embodiment of the present application, in the second embodiment of the present application, the same or similar contents as those in the above embodiment 1 can be referred to the above introduction and will not be described in detail later. Figure 5 In this embodiment, the step S20, the charging method further includes steps S21 to S23:

[0115] Step S21: extracting the broadcast information of each slave power cabinet and determining the working status frame of each slave power cabinet.

[0116] It should be noted that since the broadcast information of each slave power cabinet includes but is not limited to the working status frame of the power cabinet and its current available power, the broadcast information of each slave power cabinet is extracted to determine the working status frame of each slave power cabinet.

[0117] Step S22: determining at least one power cabinet to be selected from the plurality of slave power cabinets according to the working status frames of the slave power cabinets.

[0118] It should be noted that for each slave power cabinet: the real-time status of each charging gun in the power cabinet can be determined according to the working status frame. If the real-time status of a charging gun is idle, it will be used as a candidate power cabinet.

[0119] Step S23: determining at least one target power cabinet from a plurality of candidate power cabinets according to the resource borrowing information.

[0120] It should be noted that the resource borrowing information is used to determine the number of charging guns to be borrowed, and a target power cabinet with the same number of charging guns to be borrowed is selected from multiple candidate power cabinets. In this embodiment, when the number of charging guns to be borrowed is greater than one, the principle of borrowing one charging gun from each slave power cabinet is followed, and the number of target power cabinets selected should be equal to the number of charging guns to be borrowed. The borrowing rules can also be adjusted based on actual needs, and this embodiment does not impose any restrictions on this.

[0121] In a feasible implementation, step S23 may include steps D11 to D13:

[0122] Step D11: Determine the borrowed quantity of charging guns according to the resource borrowing information.

[0123] Step D12: Determine the borrowing priority of each power cabinet to be selected according to the available charging power of each power cabinet to be selected.

[0124] It should be noted that the available charging power of the selected power cabinet refers to the current available power of each selected power cabinet, which can be determined based on the broadcast information of each selected power cabinet. Based on the available charging power of each selected power cabinet, a borrowing priority is assigned to each selected power cabinet. The greater the available charging power, the higher the borrowing priority.

[0125] Step D13: determining at least one target power cabinet from the plurality of power cabinets to be selected according to the borrowing priority of each power cabinet to be selected and the borrowing quantity of the charging guns.

[0126] It should be noted that the borrowing priority of each candidate power cabinet is sorted in ascending or descending order, which is not limited in this embodiment. After the sorting is completed, if the number of charging guns borrowed is 1, the candidate power cabinet with the highest borrowing priority is selected as the target power cabinet; if the number of charging guns borrowed is not 1, the target power cabinet with the same number of charging guns borrowed is selected according to the sorting order, and the cabinet with the higher borrowing priority is borrowed first.

[0127] This embodiment provides a charging method. This embodiment extracts broadcast information from each slave power cabinet to determine the operating status frame of each slave power cabinet; determines at least one candidate power cabinet from multiple slave power cabinets based on the operating status frame of each slave power cabinet; and determines at least one target power cabinet from the multiple candidate power cabinets based on the resource borrowing information. This method ensures efficient resource utilization while also meeting the charging needs of target vehicles.

[0128] Based on the first embodiment and / or the second embodiment of the present application, in the third embodiment of the present application, the same or similar contents as those in the first and second embodiments above can be referred to the above introduction and will not be described in detail later. Figure 6 Before step S10, the charging method further includes steps S01 to S03:

[0129] Step S01: Determine the charging request power and the requested number of charging guns of the target vehicle according to the multi-charging gun request.

[0130] It should be noted that the requested number of charging guns refers to the number of charging guns that the target vehicle needs to use simultaneously; the requested charging power refers to the power required by the target vehicle for this charging session. The main power cabinet analyzes the multi-charger charging request sent by the target vehicle to determine the requested charging power and the requested number of charging guns.

[0131] Step S02: When the requested number of charging guns does not exceed the number of available charging guns in the main power cabinet, the current available power is obtained.

[0132] It should be noted that the number of available charging guns refers to the number of charging guns currently idle in the main power cabinet. If the number of charging gun requests exceeds the number of available charging guns in the main power cabinet, the principle of providing one charging gun per power cabinet is followed. The number of charging guns borrowed is calculated by subtracting 1 from the number of charging gun requests, and resource borrowing information is generated based on the number of charging guns borrowed.

[0133] It is understandable that when the requested number of charging guns does not exceed the number of available charging guns in the main power cabinet, in order to ensure reasonable utilization of resources, it is necessary to obtain the current available power of the main power cabinet.

[0134] Step S03: generating resource borrowing information when the current available power is less than the charging request power.

[0135] It should be noted that when the current available power is less than the charging request power, it means that the main power cabinet itself cannot meet the charging needs of the target vehicle and needs to borrow resources from other slave power cabinets. At this time, the principle of providing one charging gun for each power cabinet is followed. The number of charging guns borrowed is obtained by subtracting 1 from the number of charging gun requests, and resource borrowing information is generated based on the number of charging guns borrowed.

[0136] It can be understood that when the current available power is greater than or equal to the charging request power, it means that the master power cabinet itself can meet the charging demand of the target vehicle and there is no need to borrow resources from other slave power cabinets.

[0137] This embodiment provides a charging method that determines the target vehicle's requested charging power and the requested number of charging guns based on a multi-gun charging request; obtains the current available power when the requested number of charging guns does not exceed the number of available charging guns in the main power cabinet; and generates resource borrowing information when the current available power is less than the requested charging power. This method allows for efficient resource allocation while ensuring limited resources.

[0138] It should be noted that the above examples are only used to understand the present application and do not constitute a limitation on the charging method of the present application. More simple transformations based on this technical concept are all within the scope of protection of the present application.

[0139] This application also provides a charging device, please refer to Figure 7 , the charging device comprises:

[0140] The processing module 10 is configured to determine resource borrowing information according to a multi-gun charging request sent by a target vehicle when the multi-gun charging request is received.

[0141] The selection module 20 is used to select at least one target power cabinet from multiple slave power cabinets based on the broadcast information of each slave power cabinet and the resource borrowing information. The slave power cabinet is a power cabinet other than the master power cabinet in the charging system. The master power cabinet is a power cabinet in the charging system that receives the multi-gun charging request.

[0142] The sending module 30 is configured to send a resource borrowing request to the target power cabinet, so that the target power cabinet responds to the resource borrowing request and charges the target vehicle according to the response result.

[0143] Optionally, the selection module 20 is further configured to:

[0144] The broadcast information of each slave power cabinet is extracted to determine the working status frame of each slave power cabinet; at least one to-be-selected power cabinet is determined from multiple slave power cabinets based on the working status frame of each slave power cabinet; and at least one target power cabinet is determined from the multiple to-be-selected power cabinets based on the resource borrowing information.

[0145] Optionally, the selection module 20 is further configured to:

[0146] Determine the borrowing quantity of charging guns based on the resource borrowing information; determine the borrowing priority of each power cabinet to be selected based on the charging available power of each power cabinet to be selected; determine at least one target power cabinet among multiple power cabinets to be selected based on the borrowing priority of each power cabinet to be selected and the borrowing quantity of charging guns.

[0147] Optionally, the sending module 30 is further configured to:

[0148] The charging request power of the target vehicle is determined according to the multi-gun charging request; the charging borrowed power is determined according to the current available power of the main power cabinet and the charging request power; and a resource borrowing request corresponding to the target power cabinet is generated according to the charging borrowed power.

[0149] Optionally, the sending module 30 is further configured to:

[0150] When a borrowing response message is received from the target power cabinet within a preset time period, the multi-gun charging request is responded to and the target vehicle is charged according to the response result; when the charging end information of the target vehicle is received, a resource release instruction is generated; and the resource release instruction is sent to the target power cabinet so that the target power cabinet ends charging the target vehicle according to the resource release instruction.

[0151] Optionally, the processing module 10 is further configured to:

[0152] Determine the charging request power and the requested number of charging guns of the target vehicle based on the multi-gun charging request; when the requested number of charging guns does not exceed the number of available charging guns in the main power cabinet, obtain the current available power; when the current available power is less than the requested charging power, generate resource borrowing information.

[0153] Optionally, the sending module 30 is further configured to:

[0154] Upon receiving a resource recovery request sent by the target power cabinet, respond to the resource recovery request and obtain charging progress information of the target vehicle; and re-execute the step of selecting at least one target power cabinet from multiple slave power cabinets based on the broadcast information of each slave power cabinet and the resource borrowing information according to the charging progress information.

[0155] The charging device provided in this application, utilizing the charging method described in the aforementioned embodiments, can address the technical problem of reducing the cost and complexity of power cabinet design while maintaining high power output capability. Compared to the prior art, the beneficial effects of the charging device provided in this application are the same as those of the charging method described in the aforementioned embodiments. Other technical features of the charging device are the same as those disclosed in the aforementioned embodiments and are not further elaborated here.

[0156] The present application provides a power cabinet, which includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the charging method in the above-mentioned embodiment 1.

[0157] Reference below Figure 8 , which shows a schematic diagram of the structure of a power cabinet suitable for implementing the embodiments of the present application. The power cabinet in the embodiments of the present application may include, but is not limited to, mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), in-vehicle terminals (such as in-vehicle navigation terminals), and fixed terminals such as digital TVs and desktop computers. Figure 8 The power cabinet shown is merely an example and should not limit the functions and scope of use of the embodiments of the present application.

[0158] like Figure 8 As shown, the power cabinet may include a processing device 1001 (e.g., a central processing unit, a graphics processing unit, etc.), which can perform various appropriate actions and processes based on programs stored in a read-only memory (ROM) 1002 or programs loaded from a storage device 1003 into a random access memory (RAM) 1004. RAM 1004 also stores various programs and data required for the operation of the power cabinet. Processing device 1001, ROM 1002, and RAM 1004 are interconnected via a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Typically, the following systems may be connected to I / O interface 1006: input devices 1007 including, for example, a touch screen, touchpad, keyboard, mouse, image sensor, microphone, accelerometer, gyroscope, etc.; output devices 1008 including, for example, a liquid crystal display (LCD), speaker, vibrator, etc.; storage device 1003 including, for example, a magnetic tape, hard disk, etc.; and communication devices 1009. The communication device 1009 can allow the power cabinet to communicate with other devices wirelessly or wired to exchange data. Although the figure shows a power cabinet with various systems, it should be understood that it is not required to implement or have all the systems shown. More or fewer systems can be implemented or have instead.

[0159] In particular, according to the embodiments disclosed in the present application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, the embodiments disclosed in the present application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program comprising program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network via a communication device, or installed from a storage device 1003, or installed from a ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present application are executed.

[0160] The power cabinet provided in this application, employing the charging method described in the aforementioned embodiment, can address the technical problem of reducing the cost and complexity of power cabinet design while maintaining high power output capability. Compared to the prior art, the beneficial effects of the power cabinet provided in this application are the same as those of the charging method described in the aforementioned embodiment. Other technical features of this power cabinet are the same as those disclosed in the aforementioned embodiment and are not further elaborated here.

[0161] It should be understood that the various parts disclosed in this application can be implemented using hardware, software, firmware, or a combination thereof. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0162] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

[0163] The present application provides a computer-readable storage medium having computer-readable program instructions (ie, a computer program) stored thereon, and the computer-readable program instructions are used to execute the charging method in the above embodiment.

[0164] The computer-readable storage medium provided in this application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, systems or devices, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In this embodiment, the computer-readable storage medium may be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, system or device. The program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination thereof.

[0165] The computer-readable storage medium may be contained in the power cabinet, or may exist independently without being assembled into the power cabinet.

[0166] The above-mentioned computer-readable storage medium carries one or more programs. When the above-mentioned one or more programs are executed by the power cabinet, the power cabinet: when receiving a multi-gun charging request sent by a target vehicle, determines resource borrowing information according to the multi-gun charging request; selects at least one target power cabinet from multiple slave power cabinets according to the broadcast information of each slave power cabinet and the resource borrowing information, the slave power cabinet is a power cabinet in the charging system other than the main power cabinet, and the main power cabinet is a power cabinet in the charging system that receives the multi-gun charging request; sends a resource borrowing request to the target power cabinet so that the target power cabinet responds to the resource borrowing request, and charges the target vehicle according to the response result.

[0167] Computer program code for performing the operations of the present application may be written in one or more programming languages, or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0168] The flow charts and block diagrams in the accompanying drawings illustrate the possible architecture, functions and operations of the systems, methods and computer program products according to various embodiments of the present application. In this regard, each box in the flow chart or block diagram can represent a module, program segment or a part of code, and the module, program segment or a part of code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order than that marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flow chart, and the combination of the boxes in the block diagram and / or flow chart can be implemented by a dedicated hardware-based system that performs the specified function or operation, or can be implemented by a combination of dedicated hardware and computer instructions.

[0169] The modules described in the embodiments of the present application may be implemented in software or hardware, wherein the name of a module does not necessarily limit the unit itself.

[0170] The computer-readable storage medium provided in this application is a computer-readable storage medium that stores computer-readable program instructions (i.e., a computer program) for executing the above-described charging method. This computer-readable storage medium can address the technical problem of reducing the cost and complexity of power cabinet design while ensuring high power output capability. Compared to the prior art, the beneficial effects of the computer-readable storage medium provided in this application are the same as those of the charging method provided in the above-described embodiment, and are not further elaborated here.

[0171] The present application also provides a computer program product, comprising a computer program, which implements the steps of the charging method described above when executed by a processor.

[0172] The computer program product provided in this application can solve the technical problem of reducing the cost and complexity of power cabinet design while maintaining high power output capability. Compared with the prior art, the beneficial effects of the computer program product provided in this application are the same as those of the charging method provided in the above embodiment, and will not be elaborated here.

[0173] The above description is only part of the embodiments of the present application and does not limit the patent scope of the present application. All equivalent structural transformations made by using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A charging method, characterized in that: The charging method is applied to a charging system, wherein the charging system includes a plurality of power cabinets, and communication connections are achieved between the power cabinets; The charging method includes: Upon receiving a multi-gun charging request sent by a target vehicle, determining resource borrowing information according to the multi-gun charging request; selecting at least one target power cabinet from a plurality of slave power cabinets according to the broadcast information of each slave power cabinet and the resource borrowing information, wherein the slave power cabinet is a power cabinet other than the master power cabinet in the charging system, and the master power cabinet is a power cabinet in the charging system that receives the multi-gun charging request; A resource borrowing request is sent to the target power cabinet, so that the target power cabinet responds to the resource borrowing request and charges the target vehicle according to the response result.

2. The method according to claim 1, wherein The step of selecting at least one target power cabinet from a plurality of slave power cabinets according to the broadcast information of each slave power cabinet and the resource borrowing information includes: Extract the broadcast information of each slave power cabinet and determine the working status frame of each slave power cabinet; determining at least one power cabinet to be selected from a plurality of slave power cabinets according to the working status frames of each slave power cabinet; At least one target power cabinet is determined from a plurality of to-be-selected power cabinets according to the resource borrowing information.

3. The method according to claim 2, wherein The step of determining at least one target power cabinet from a plurality of candidate power cabinets according to the resource borrowing information includes: Determine the borrowed quantity of charging guns according to the resource borrowing information; Determine the borrowing priority of each power cabinet to be selected based on the charging available power of each power cabinet to be selected; At least one target power cabinet is determined from the plurality of power cabinets to be selected according to the borrowing priority of each power cabinet to be selected and the borrowing quantity of the charging guns.

4. The method according to claim 1, wherein Before the step of sending the resource borrowing request to the target power cabinet so that the target power cabinet responds to the resource borrowing request and charging the target vehicle according to the response result, the method further includes: Determining a charging request power for the target vehicle according to the multi-gun charging request; Determining the borrowed charging power according to the current available power of the main power cabinet and the charging request power; A resource borrowing request corresponding to the target power cabinet is generated according to the charging borrowed power.

5. The method according to any one of claims 1 to 4, characterized in that After the step of sending the resource borrowing request to the target power cabinet so that the target power cabinet responds to the resource borrowing request and charges the target vehicle according to the response result, the method further includes: When receiving the borrowing response information sent by the target power cabinet within a preset time period, responding to the multi-gun charging request and charging the target vehicle according to the response result; Upon receiving charging completion information of the target vehicle, generating a resource release instruction; The resource release instruction is sent to the target power cabinet, so that the target power cabinet ends charging the target vehicle according to the resource release instruction.

6. The method according to any one of claims 1 to 4, characterized in that Before the step of determining resource borrowing information according to the multi-gun charging request, the method further includes: Determining the charging request power and the requested number of charging guns for the target vehicle according to the multi-gun charging request; When the requested number of charging guns does not exceed the number of available charging guns in the main power cabinet, obtaining the current available power; When the currently available power is less than the charging request power, resource borrowing information is generated.

7. The method according to any one of claims 1 to 4, characterized in that After the step of sending the resource borrowing request to the target power cabinet so that the target power cabinet responds to the resource borrowing request and charges the target vehicle according to the response result, the method further includes: Upon receiving the resource recovery request sent by the target power cabinet, responding to the resource recovery request and obtaining charging progress information of the target vehicle; The step of selecting at least one target power cabinet from a plurality of slave power cabinets according to the broadcast information of each slave power cabinet and the resource borrowing information is re-executed according to the charging progress information.

8. A charging device, characterized in that: The charging device comprises: a processing module, configured to, upon receiving a multi-gun charging request sent by a target vehicle, determine resource borrowing information according to the multi-gun charging request; a selection module, configured to select at least one target power cabinet from a plurality of slave power cabinets according to the broadcast information of each slave power cabinet and the resource borrowing information, wherein the slave power cabinet is a power cabinet other than the master power cabinet in the charging system, and the master power cabinet is a power cabinet in the charging system that receives the multi-gun charging request; The sending module is used to send a resource borrowing request to the target power cabinet, so that the target power cabinet responds to the resource borrowing request and charges the target vehicle according to the response result.

9. A power cabinet, characterized in that: The power cabinet includes: a memory, a processor, and a charging program stored in the memory and executable on the processor, wherein the charging program is configured to implement the steps of the charging method according to any one of claims 1 to 7.

10. A charging system, characterized in that: The charging system includes a plurality of power cabinets, and communication connections are achieved between the power cabinets.

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