Multi-cabinet charging control system and method

Abstract

The invention relates to a multi-cabinet charging control system and method, and belongs to the technical field of charging piles, the multi-cabinet charging control system comprises a plurality of charging cabinets, a parallel distribution unit and a main controller, a plurality of charging modules are arranged in the charging cabinets, and the main controller is used for obtaining charging requirements, determining the required number of the required charging modules and controlling the charging modules to be charged according to the charging requirements. The target output current of each charging module is calculated; the parallel distribution unit is used for adjusting the number of the charging modules in each charging cabinet based on the demand number, and connecting the charging modules in each charging cabinet in parallel; and the main controller is also used for controlling the parallel charging modules to output target output current so as to meet the charging requirement. The number of the parallel charging modules can be adjusted according to charging requirements, different charging powers can be realized through combination of different numbers of charging modules according to the adjusted target output current of the charging modules, and application scenes of low-power charging and high-power charging are compatible.

Description

Technical Field

[0001] The present invention relates to the technical field of charging piles, and in particular to a multi-cabinet charging control system and method. Background Art

[0002] With the continuous development of power technology and clean energy, electricity has more and more application scenarios, and the charging demand is also increasing. In order to meet different charging needs, existing charging piles are generally equipped with ultra-high power charging mode and low power charging mode.

[0003] In the existing charging technology, for the application scenarios of ultra-high power charging and low power charging, two charging modes are generally set, and different charging guns are used to provide different charging powers. The utilization rate of charging piles is poor, and it is not compatible with the application scenarios of low power charging and high power charging, and cannot adapt to market demand.

[0004] This shows that the existing charging technology is not compatible with the application scenarios of low-power charging and high-power charging. Summary of the invention

[0005] In view of this, it is necessary to provide a multi-cabinet charging control system and method to solve the problem that the existing charging technology is not compatible with the application scenarios of low-power charging and high-power charging.

[0006] In order to solve the above problems, the present invention provides a multi-cabinet charging control system, comprising a plurality of charging cabinets, a parallel distribution unit and a main controller, wherein the charging cabinet is provided with a plurality of charging modules. The main controller is used to obtain charging requirements, determine the required number of charging modules based on the charging requirements, and calculate the target output current of each charging module; The parallel distribution unit is used to adjust the number of charging modules in each charging cabinet based on the required number, and connect the charging modules in each charging cabinet in parallel; The main controller is further used to control each of the charging modules connected in parallel to output the target output current to meet the charging demand.

[0007] In a possible implementation, the charging cabinet is further provided with a power output unit and a charging gun, the power output units of the charging cabinets are connected via a power cable, and each charging cabinet outputs a target output current to the outside through the charging gun.

[0008] In a possible implementation, the multiple charging modules in each of the charging cabinets are connected in parallel via a first parallel switch, and the charging cabinets are connected in parallel via a second parallel switch. The number of parallel charging modules can be controlled by controlling the state of the first parallel switch and / or the second parallel switch.

[0009] In a possible implementation manner, when the main controller determines the required number of charging modules based on the charging demand, it is configured to: Obtaining charging demand current in charging demand; The required number of charging modules is calculated based on the required charging current and the maximum output current of a single charging module.

[0010] In a possible implementation manner, when calculating the target output current of each charging module, the main controller is used to: Based on the actual number of the charging modules and the required charging current, a target output current of each charging module is calculated.

[0011] In a possible implementation manner, when the parallel allocation unit is used to adjust the number of charging modules in each charging cabinet based on the demand quantity, the parallel allocation unit is used to: When the number of charging modules connected in parallel in multiple cabinets is greater than the required number, the charging modules are disconnected until the number of charging modules connected in parallel is equal to the required number; When the number of charging modules connected in parallel in a plurality of cabinets is less than the required number, other charging modules in the cabinets are connected in parallel until the number of the charging modules connected in parallel is equal to the required number.

[0012] In a possible implementation manner, the main controller and the parallel distribution unit are connected via a CAN bus.

[0013] The present invention also provides a multi-cabinet charging control method, which is applicable to the multi-cabinet charging control system described in any of the above embodiments, comprising: Obtaining charging demand, and determining the required number of charging modules based on the charging demand; Adjusting the number of charging modules in each charging cabinet based on the required number, and calculating the target output current of each charging module; Connect the charging modules in each charging cabinet in parallel, and control each charging module to output the target output current to meet the charging demand. In a possible implementation, the acquiring the charging demand and determining the required number of charging modules based on the charging demand includes: Obtaining charging demand current in charging demand; The required number of charging modules is calculated based on the required charging current and the maximum output current of a single charging module.

[0014] In a possible implementation manner, the calculating the target output current of each charging module includes: Based on the actual number of the charging modules and the required charging current, a target output current of each charging module is calculated.

[0015] The beneficial effects of the present invention are as follows: the multi-cabinet charging control system provided by the present invention obtains the charging demand, determines the number of required charging modules according to the charging demand, adjusts the number of charging modules in each charging cabinet according to the number, calculates the target output current of each charging module, and then connects each charging module in parallel, and controls each charging module to output the target output current to meet the charging demand. The present invention can adjust the number of parallel charging modules according to the charging demand, and adjust the target output current of the charging module according to the charging module. Through the combination of different numbers of charging modules, different charging powers can be achieved, which is compatible with the application scenarios of low-power charging and high-power charging, and has a higher utilization rate of the charging modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A schematic diagram of the structure of a multi-cabinet charging control system provided by an embodiment of the present invention; Figure 2 An electrical diagram of a charging cabinet provided by an embodiment of the present invention; Figure 3 A schematic diagram of a flow chart of a multi-cabinet charging control method provided by an embodiment of the present invention; Figure 4 A flowchart of a possible implementation method of S301 provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0019] In the description of the embodiments of the present invention, unless otherwise specified, "multiple" means two or more than two. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" may mean: A exists alone, A and B exist at the same time, and B exists alone.

[0020] The descriptions of "first", "second", etc. involved in the embodiments of the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the technical features defined as "first" and "second" may explicitly or implicitly include at least one of the features.

[0021] Reference to an "embodiment" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0022] A specific embodiment of the present invention, as Figure 1 As shown, a multi-cabinet charging control system is disclosed, including multiple charging cabinets 101, a parallel distribution unit 102 and a main controller 103, wherein the charging cabinet is provided with multiple charging modules 104, The main controller is used to obtain charging requirements, determine the required number of charging modules based on the charging requirements, and calculate the target output current of each charging module; The parallel distribution unit is used to adjust the number of charging modules in each charging cabinet based on the required number, and connect the charging modules in each charging cabinet in parallel; The main controller is further used to control each of the charging modules connected in parallel to output the target output current to meet the charging demand.

[0023] The multi-cabinet charging control system provided by the present invention is suitable for charging scenarios with multiple charging cabinets, and can control multiple charging modules in multiple charging cabinets to adapt to different charging needs. Charging demand refers to the output current, output power, output voltage and other requirements that the charging cabinet needs to output. For example, for low-power charging scenarios and ultra-high-power charging scenarios, the charging requirements are different, specifically the charging power is different, which can be different charging current and charging voltage. Based on different charging requirements, the number of charging modules required for this charging can be determined. The charging module refers to the electric energy output module in the charging cabinet that can be charged independently. How to determine the required number of charging modules will be described in detail later in the present invention.

[0024] In an embodiment of the present invention, a multi-cabinet charging control system may include multiple charging cabinets, each charging cabinet includes multiple charging modules, and the main controller is used to obtain the charging demand, and determine the required number of charging modules based on the charging demand, and calculate the target output current of each charging module. Specifically, the charging demand can be first summarized to the parallel distribution unit, and then the main controller coordinates the charging modules in each charging cabinet according to the output capacity of each charging module.

[0025] Further, such as Figure 1 As shown, the charging cabinet is also provided with a power output unit 105 and a charging gun 106. The power output units of each charging cabinet are connected through a power cable, and each charging cabinet outputs a target output current to the outside through a charging gun. The main controller is connected to the parallel distribution unit through a CAN bus.

[0026] Further, such as Figure 2 As shown, multiple charging modules in each charging cabinet are connected in parallel through a first parallel switch, and the charging cabinets are connected in parallel through a second parallel switch. The number of parallel charging modules can be controlled by controlling the state of the first parallel switch and / or the second parallel switch.

[0027] In the embodiment of the present invention, for the convenience of explanation, two charging cabinets are taken as an example, M1, M2, M3, M4, M5, and M6 are charging modules, and each charging cabinet has three charging modules. In the first charging module, 1k1 connects M1 and M3; 1k2 connects M1 and M2; 1k3 connects M2 and M3; in the second charging cabinet, 2k1 connects M4 and M6; 2k2 connects M4 and M5; 2k3 connects M5 and M6; further, 3K1 connects M1 of slave control 1 and M4 of slave control 2; 3K2 connects M2 of slave control 1 and M5 of slave control 2; 3K3 connects M3 of slave control 1 and M6 of slave control 2; by adjusting the switches therein, independent output and parallel output of M1, M2, M3, M4, M5, and M6 can be achieved to adapt to application scenarios with different charging power. Of course, the multi-cabinet charging control system may include more charging cabinets, and the number of charging modules in each charging cabinet may also be more, and this application does not impose any restrictions on this.

[0028] The multi-cabinet charging control system provided by the present invention obtains the charging demand, determines the number of required charging modules according to the charging demand, adjusts the number of charging modules in each charging cabinet according to the number, calculates the target output current of each charging module, and then connects each charging module in parallel, and controls each charging module to output the target output current to meet the charging demand. The present invention can adjust the number of parallel charging modules according to the charging demand, and adjust the target output current of the charging module according to the charging module. Through the combination of different numbers of charging modules, different charging powers can be achieved, which is compatible with the application scenarios of low-power charging and high-power charging, and has a higher utilization rate of the charging modules.

[0029] As a possible implementation manner of the present application, in this implementation manner, when the main controller determines the required number of charging modules based on the charging demand, it is used to: Obtaining charging demand current in charging demand; The required number of charging modules is calculated based on the required charging current and the maximum output current of a single charging module.

[0030] In the embodiment of the present invention, under normal circumstances, the charging voltage in the charging cabinet is constant. Therefore, different charging power requirements are generally achieved by adjusting the size of the charging current. Therefore, when determining the number of required charging modules based on the charging demand, the charging demand current in the charging demand can be obtained, and then the required number of charging modules can be calculated based on the charging demand current and the maximum output current of a single charging module. Specifically, the required number of charging modules can be obtained by dividing the charging demand current by the maximum output current of a single charging module.

[0031] The embodiment of the present invention calculates the required number of charging modules according to the charging power requirements of different charging requirements and the maximum output current of each charging module, thereby facilitating the calling of subsequent charging modules.

[0032] As a possible implementation of the present application, in this implementation, when calculating the target output current of each charging module, the main controller is used to: Based on the actual number of the charging modules and the required charging current, a target output current of each charging module is calculated.

[0033] In the embodiment of the present invention, after determining the actual number of charging modules connected in parallel, the target output current of each charging module can be calculated based on the magnitude of the demand current and the actual number of charging modules. Specifically, the target output current of each charging module can be obtained by dividing the demand current by the actual number of charging modules.

[0034] As a possible implementation manner of the present application, in this implementation manner, when the parallel allocation unit is used to adjust the number of charging modules in each charging cabinet based on the demand quantity, the parallel allocation unit is used to: When the number of charging modules connected in parallel in multiple cabinets is greater than the required number, the charging modules are disconnected until the number of charging modules connected in parallel is equal to the required number; When the number of charging modules connected in parallel in a plurality of cabinets is less than the required number, other charging modules in the cabinets are connected in parallel until the number of the charging modules connected in parallel is equal to the required number.

[0035] In an embodiment of the present invention, the number of charging modules connected in parallel in each charging cabinet may be different from the required number of this charging demand, so the number of charging modules connected in parallel needs to be adjusted. Specifically, when the number of charging modules connected in parallel in multiple cabinets is greater than the required number, the charging modules are disconnected and processed until the number of charging modules connected in parallel is equal to the required number; when the number of charging modules connected in parallel in multiple cabinets is less than the required number, the other charging modules in the cabinets are processed in parallel until the number of charging modules connected in parallel is equal to the required number. How to disconnect and process the charging modules in parallel will be described in detail later in the present invention.

[0036] The multi-cabinet charging control system provided by the present invention obtains the charging demand, determines the number of required charging modules according to the charging demand, adjusts the number of charging modules in each charging cabinet according to the number, calculates the target output current of each charging module, and then connects each charging module in parallel, and controls each charging module to output the target output current to meet the charging demand. The present invention can adjust the number of parallel charging modules according to the charging demand, and adjust the target output current of the charging module according to the charging module. Through the combination of different numbers of charging modules, different charging powers can be achieved, which is compatible with the application scenarios of low-power charging and high-power charging, and has a higher utilization rate of the charging modules.

[0037] Furthermore, an embodiment of the present invention also provides a multi-cabinet charging control method, which is applicable to the multi-cabinet charging control system described in any of the above embodiments, such as Figure 3 As shown, including: S301, obtaining charging demand, and determining the required number of charging modules based on the charging demand; S302, adjusting the number of charging modules in each charging cabinet based on the required number, and calculating the target output current of each charging module; S303, connecting the charging modules in the charging cabinets in parallel, and controlling each charging module to output the target output current to meet the charging demand.

[0038] In an embodiment of the present invention, a multi-cabinet charging control method is applicable to a charging scenario with multiple charging cabinets, and multiple charging modules in multiple charging cabinets can be controlled to adapt to different charging needs. Charging demand refers to the output current, output power, output voltage and other requirements that need to be output by the charging cabinet. For example, for low-power charging scenarios and ultra-high-power charging scenarios, the charging requirements are different, specifically the charging power is different, which can be different charging current and charging voltage. Based on different charging requirements, the number of charging modules required for this charging can be determined. A charging module refers to an electric energy output module in a charging cabinet that can be charged independently. How to determine the required number of charging modules will be described in detail later in the present invention.

[0039] Furthermore, after determining the required number of charging modules, based on the required number, the number of charging modules used to complete the charging in multiple charging cabinets can be adjusted to ensure that the number of charging modules used to complete the charging meets the required number, and the target output current of each charging module is calculated based on the actual number of charging modules, wherein the target output current refers to the current output by the charging module when completing the charging task.

[0040] Furthermore, the charging modules used to complete the charging are connected in parallel, and each charging module is controlled to output a target output current to meet the charging demand.

[0041] The multi-cabinet charging control method provided by the present invention obtains the charging demand, determines the number of required charging modules according to the charging demand, adjusts the number of charging modules in each charging cabinet according to the number, calculates the target output current of each charging module, and then connects each charging module in parallel, and controls each charging module to output the target output current to meet the charging demand. The present invention can adjust the number of parallel charging modules according to the charging demand, and adjust the target output current of the charging module according to the charging module. Through the combination of different numbers of charging modules, different charging powers can be achieved, which is compatible with the application scenarios of low-power charging and high-power charging, and has a higher utilization rate of the charging module.

[0042] As a possible implementation of the present application, in this implementation, if Figure 4 As shown, obtaining charging demand and determining the required number of charging modules based on the charging demand include: S401, obtaining a charging demand current in a charging demand; S402: Calculate the required number of charging modules based on the required charging current and the maximum output current of a single charging module.

[0043] In the embodiment of the present invention, under normal circumstances, the charging voltage in the charging cabinet is constant. Therefore, different charging power requirements are generally achieved by adjusting the size of the charging current. Therefore, when determining the number of required charging modules based on the charging demand, the charging demand current in the charging demand can be obtained, and then the required number of charging modules can be calculated based on the charging demand current and the maximum output current of a single charging module. Specifically, the required number of charging modules can be obtained by dividing the charging demand current by the maximum output current of a single charging module.

[0044] Furthermore, the target output current of each charging module is calculated, including: Based on the actual number of charging modules and the required current, the target output current of each charging module is calculated.

[0045] In the embodiment of the present invention, after determining the actual number of charging modules connected in parallel, the target output current of each charging module can be calculated based on the magnitude of the demand current and the actual number of charging modules. Specifically, the target output current of each charging module can be obtained by dividing the demand current by the actual number of charging modules.

[0046] The multi-cabinet charging control method provided by the present invention obtains the charging demand, determines the number of required charging modules according to the charging demand, adjusts the number of charging modules in each charging cabinet according to the number, calculates the target output current of each charging module, and then connects each charging module in parallel, and controls each charging module to output the target output current to meet the charging demand. The present invention can adjust the number of parallel charging modules according to the charging demand, and adjust the target output current of the charging module according to the charging module. Through the combination of different numbers of charging modules, different charging powers can be achieved, which is compatible with the application scenarios of low-power charging and high-power charging, and has a higher utilization rate of the charging module.

[0047] Those skilled in the art can understand that all or part of the processes of the above-mentioned embodiments can be implemented by instructing related hardware through a computer program, and the program can be stored in a computer-readable storage medium, wherein the computer-readable storage medium is a disk, an optical disk, a read-only storage memory, or a random access memory, etc.

[0048] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A multi-cabinet charging control system, characterized in that: The system comprises a plurality of charging cabinets, a parallel distribution unit and a main controller, wherein the charging cabinet is provided with a plurality of charging modules. The main controller is used to obtain charging requirements, determine the required number of charging modules based on the charging requirements, and calculate the target output current of each charging module; The parallel distribution unit is used to adjust the number of charging modules in each charging cabinet based on the required number, and connect the charging modules in each charging cabinet in parallel; The main controller is further used to control each of the charging modules connected in parallel to output the target output current to meet the charging demand.

2. The multi-cabinet charging control system according to claim 1, characterized in that: The charging cabinet is also provided with a power output unit and a charging gun. The power output units of the charging cabinets are connected via a power cable, and each charging cabinet outputs a target output current to the outside via the charging gun.

3. The multi-cabinet charging control system according to claim 1, characterized in that: The multiple charging modules in each charging cabinet are connected in parallel via a first parallel switch, and the charging cabinets are connected in parallel via a second parallel switch. The number of parallel charging modules can be controlled by controlling the state of the first parallel switch and / or the second parallel switch.

4. The multi-cabinet charging control system according to claim 1, characterized in that: When the main controller determines the required number of charging modules based on the charging demand, it is used to: Obtaining charging demand current in charging demand; The required number of charging modules is calculated based on the required charging current and the maximum output current of a single charging module.

5. The multi-cabinet charging control system according to claim 4, characterized in that: When calculating the target output current of each charging module, the main controller is used to: Based on the actual number of the charging modules and the required charging current, a target output current of each charging module is calculated.

6. The multi-cabinet charging control system according to claim 4, characterized in that: The parallel allocation unit, when the parallel allocation unit is used to adjust the number of charging modules in each charging cabinet based on the required number, is used to: When the number of charging modules connected in parallel in multiple cabinets is greater than the required number, the charging modules are disconnected until the number of charging modules connected in parallel is equal to the required number; When the number of charging modules connected in parallel in a plurality of cabinets is less than the required number, other charging modules in the cabinets are connected in parallel until the number of the charging modules connected in parallel is equal to the required number.

7. The multi-cabinet charging control system according to claim 5, characterized in that: The main controller and the parallel distribution unit are connected via a CAN bus.

8. A multi-cabinet charging control method, characterized in that: The multi-cabinet charging control system applicable to any one of claims 1 to 7 comprises: Obtaining charging demand, and determining the required number of charging modules based on the charging demand; Adjusting the number of charging modules in each charging cabinet based on the required number, and calculating the target output current of each charging module; The charging modules in each of the charging cabinets are connected in parallel, and each charging module is controlled to output the target output current to meet the charging demand.

9. The multi-cabinet charging control method according to claim 8, characterized in that: The obtaining of charging demand and determining the required number of charging modules based on the charging demand include: Obtaining charging demand current in charging demand; The required number of charging modules is calculated based on the required charging current and the maximum output current of a single charging module.

10. The multi-cabinet charging control method according to claim 9, characterized in that: The calculating the target output current of each charging module includes: Based on the actual number of the charging modules and the required charging current, a target output current of each charging module is calculated.

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