A dynamic power allocation method and system

Abstract

The present application provides a dynamic power allocation method and system, which relates to the field of automotive DC charging technology, wherein the method includes: obtaining the working state information of the first output node; when the working state information indicates that the first output node is in a charging state, obtaining the target charging demand information of the charging vehicle; when the target charging demand information indicates that the current demand power is greater than the first preset power threshold, controlling the second charging module to perform a pre-charging operation, and controlling the bridging switch node to close when the voltage difference on both sides of the bridging switch node is less than the preset voltage threshold, so that the second charging module is switched to the first output node, wherein the first charging module is connected to the first output node through the first bus, the second charging module is connected to the second output node through the second bus, and a bridging switch node is provided between the first bus and the second bus. The technical solution provided by the present application is implemented to achieve the purpose of effectively reducing the power loss of the charging system.

Description

Technical Field

[0001] The present application relates to the technical field of automobile direct current charging, and in particular to a dynamic power distribution method and system. Background Art

[0002] The development of electric vehicle charging technology has greatly promoted the popularization of new energy vehicles. With the continuous improvement of charging infrastructure, the demand for charging stations to improve equipment efficiency, extend equipment life and reduce charging costs has become increasingly prominent. Taking the integrated dual-gun charging pile as an example, based on the consideration of equipment manufacturing cost and actual usage scenarios, the switching circuit usually adopts a semi-flexible solution, that is, "output relay + bridge relay", such as Figure 1 As shown, when two groups of modules are needed for charging, the related art adopts the method of directly switching the entire group of power modules together. This hard switching of high-voltage and high-current switching devices also causes irreversible damage to the entire system and easily causes system shock at the moment of switching. In addition, the charging module may work in a low-efficiency range, resulting in a certain amount of energy waste. Therefore, it is particularly necessary to provide a method that can switch smoothly and effectively reduce the power loss of the charging system. Summary of the invention

[0003] In order to solve the above technical problems, the present application provides a dynamic power allocation method and system.

[0004] In a first aspect, the present application provides a dynamic power allocation method, including: obtaining working status information of a first output node; when the working status information indicates that the first output node is in a charging state, obtaining target charging demand information of a charging vehicle, wherein the charging vehicle is charged through the first output node; when the target charging demand information indicates that the current demand power is greater than a first preset power threshold, controlling the second charging module to perform a pre-charging operation, and controlling the bridging switch node to close when the voltage difference on both sides of the bridging switch node is less than a preset voltage threshold, so that the second charging module is switched to the first output node to charge the charging vehicle, wherein each charging module node in the first charging module is connected to the first output node through a first bus, and each charging module node in the second charging module is connected to the second output node through a second bus, and a bridging switch node is arranged between the first bus and the second bus.

[0005] By adopting the above technical solution, when the charging vehicle is charged through the first output node and the current required power is greater than the first preset power threshold, the second charging module can be controlled to perform a pre-charging operation and close the bridge switch node when the voltage difference between the two sides of the bridge switch node is less than the preset voltage threshold, so that the second charging module can be smoothly switched to the first output node to provide charging for the charging vehicle. This solution can effectively reduce the irreversible damage caused by hard switching of high-voltage and high-current switching devices, and reduce system impact, thereby improving the stability and efficiency of the charging system.

[0006] Optionally, the above method also includes: when the target charging demand information indicates that the current demand power is less than or equal to a second preset power threshold, controlling the first charging module node to charge the charging vehicle, wherein the first charging module includes the first charging module node; when the target charging demand information indicates that the current demand power is greater than the second preset power threshold and less than or equal to the first preset power threshold, controlling the second charging module node to switch to the first output node to charge the charging vehicle, wherein the first charging module also includes the second charging module node.

[0007] By adopting the above technical solution, when the target charging demand information of the charging vehicle indicates that the current demand power is less than or equal to the second preset power threshold, the first charging module node is controlled to charge the charging vehicle; when the target charging demand information indicates that the current demand power is greater than the second preset power threshold and less than or equal to the first preset power threshold, the second charging module node is controlled to switch to the first output node to charge the charging vehicle. This solution can flexibly adjust the input of the charging module according to different charging needs, thereby realizing efficient and energy-saving dynamic power allocation, reducing the energy consumption of the charging system and improving the charging efficiency.

[0008] Optionally, when the target charging demand information indicates that the current demand power is greater than a first preset power threshold, the second charging module is controlled to perform a pre-charging operation, and when the voltage difference on both sides of the bridge switch node is less than a preset voltage threshold, the bridge switch node is controlled to be closed, so that the second charging module is switched to the first output node to charge the charging vehicle, including: when the target charging demand information indicates that the current demand power is greater than the first preset power threshold and less than or equal to a third preset power threshold, the third charging module node is controlled to perform a pre-charging operation, wherein the second charging module includes a third charging module node; when the voltage difference on both sides of the bridge switch node is less than the preset voltage threshold, the bridge switch node is controlled to be closed, so that the third charging module node is switched to the first output node to charge the charging vehicle.

[0009] By adopting the above technical solution, when the target charging demand information of the charging vehicle indicates that the current demand power is greater than the first preset power threshold and does not exceed the third preset power threshold, the third charging module node in the second charging module can be controlled to perform a pre-charging operation. When the voltage difference on both sides of the bridge switch node is less than the preset voltage threshold, the bridge switch node is controlled to close, so that the third charging module node is switched to the first output node to charge the charging vehicle, thereby achieving efficient and smooth power distribution and avoiding system impact and loss caused by hard switching.

[0010] Optionally, the above method also includes: when the target charging demand information indicates that the current required power is greater than a third preset power threshold, controlling the fourth charging module node to switch to the first output node to charge the charging vehicle, wherein the second charging module includes a fourth charging module node.

[0011] By adopting the above technical solution, when the current required power of the charging vehicle exceeds the third preset power threshold, the fourth charging module node can be controlled to switch to the first output node for charging, thereby improving the flexibility and charging efficiency of the charging system and ensuring stable power supply under high power demand.

[0012] Optionally, after controlling the bridging switch node to close so that the third charging module node is switched to the first output node to charge the charging vehicle, the method also includes: when the target charging demand information indicates that the current demand power is less than or equal to the fourth preset power threshold, controlling the third charging module node to turn off the output, and, when it is determined that the current value flowing through the bridging switch node is less than the preset current threshold, controlling the bridging switch node to disconnect, wherein the first preset power threshold = 2×P×φ1, the second preset power threshold = P×φ1, the third preset power threshold = 3×P×φ1, the fourth preset power threshold = 3×P×φ2, P represents the rated power of each charging module node, φ1 represents the first load rate, φ2 represents the second load rate, and φ2<φ1; when the target charging demand information indicates that the current demand power is less than or equal to the fifth preset power threshold, controlling the second charging module node to turn off the output, wherein the fifth preset power threshold = 3×P×φ2.

[0013] By adopting the above technical solutions, it is further refined how to flexibly adjust the output of the charging module node and the state of the bridge switch node according to the actual needs of the charging vehicle and the operating status of the system during the dynamic power allocation process. In particular, when the charging demand decreases, how to effectively shut down unnecessary charging module nodes and when to disconnect the bridge switch nodes to ensure the safe and efficient operation of the system. By introducing different preset power thresholds and load rates, the system can allocate power more accurately according to different charging needs. This not only improves the utilization efficiency of resources, but also enables the system to better adapt to various complex charging scenarios.

[0014] Optionally, the method further includes: when the working status information indicates that the first output node is not in a charging state, disconnecting the first bus and / or the second bus in a first preset order.

[0015] By adopting the above technical solution, when it is detected that the first output node is not in a charging state, the system disconnects the first bus and / or the second bus in a preset order, thereby avoiding invalid connection and improving the safety and management efficiency of the system.

[0016] Optionally, the first bus and / or the second bus are disconnected in a first preset order, including: when the second bus has been switched to the first output node, disconnecting the bridging switch node to disconnect the second bus; when the second bus has not been switched to the first output node and the first bus has been switched to the first output node, disconnecting the first output switch node to disconnect the first bus.

[0017] By adopting the above technical solution, when the second busbar has been switched to the first output node, the second busbar is disconnected by disconnecting the bridge switch node, thereby avoiding unnecessary current loss and improving the efficiency of the system; when the second busbar has not been switched to the first output node and the first busbar has been switched to the first output node, the first busbar is disconnected by disconnecting the first output switch node, thereby also avoiding current loss and ensuring the stability and safety of the system.

[0018] Optionally, when the second bus has been switched to the first output node, the bridging switch node is disconnected to disengage the second bus, including: when the second bus has been switched to the first output node, obtaining a target current value flowing through the bridging switch node; when the target current value is less than a preset current threshold, disconnecting the bridging switch node to disengage the second bus.

[0019] By adopting the above technical solution, when the second bus has been switched to the first output node, the target current value flowing through the bridge switch node is obtained, and the bridge switch node is disconnected when the target current value is less than the preset current threshold, thereby achieving safe disconnection of the second bus and effectively reducing system impact and damage caused by excessive current.

[0020] Optionally, when the working status information indicates that the first output node is in a charging state, the target charging demand information of the charging vehicle is obtained, including: when the working status information indicates that the first output node is in a charging state, determining whether the first bus has been switched to the first output node; when the first bus has been switched to the first output node, obtaining the target charging demand information.

[0021] By adopting the above technical solution, when the first output node is in a charging state, it is possible to determine whether to obtain the target charging demand information by judging whether the first bus has been switched to the first output node, thereby avoiding unnecessary waste of resources and improving the system work efficiency. Specifically, when the first output node is in a charging state, it is first determined whether the first bus has been switched to the first output node. When the first bus has been switched to the first output node, the target charging demand information is obtained. This solution enables the system to obtain charging demand information only under appropriate conditions, reduces invalid operations, and improves the work efficiency of the overall system.

[0022] Optionally, the above method also includes: when the first bus is not switched to the first output node, determining whether the first bus is in an idle state; when the first bus is not in an idle state, disengaging the first bus so that the first bus enters an idle state; when the first bus is in an idle state, switching the first bus to the first output node.

[0023] By adopting the above technical solution, when the first bus is not switched to the first output node, by judging whether the first bus is in an idle state and performing a disengagement or switching operation accordingly, the first bus can smoothly complete the process of switching to the first output node in an idle state, thereby ensuring the smooth progress of the charging operation and effectively improving the operating efficiency and reliability of the charging system.

[0024] In a second aspect of the present application, a dynamic power distribution system is also provided, which is used to execute any of the above-mentioned dynamic power distribution methods, including: a control node, a first charging module, a second charging module, a first output node, a second output node and a bridge switch node, wherein each charging module node in the first charging module, each charging module node in the second charging module, the first output node, the second output node and the bridge switch node are respectively connected to the control node, each charging module node in the first charging module is connected to the first output node through a first bus, each charging module node in the second charging module is connected to the second output node through a second bus, and a bridge switch node is arranged between the first bus and the second bus; the control node is used to perform the following operations: obtain working status information of the first output node; when the working status information indicates that the first output node is in a charging state, obtain target charging demand information of the charging vehicle; when the target charging demand information indicates that the current required power is greater than a first preset power threshold, control the second charging module to perform a pre-charging operation, and control the bridge switch node to close when the voltage difference on both sides of the bridge switch node is less than a preset voltage threshold, so that the second charging module is switched to the first output node to charge the charging vehicle.

[0025] By adopting the above technical solution, the dynamic power distribution system can intelligently control the switching process of the first charging module and the second charging module according to the working status information of the first output node and the target charging demand information of the charging vehicle. When the current required power of the charging vehicle is greater than the first preset power threshold, the system controls the second charging module to perform a pre-charging operation, and closes the bridge switch node when the voltage difference on both sides of the bridge switch node is less than the preset voltage threshold, so that the second charging module is smoothly switched to the first output node, thereby effectively reducing the power loss of the charging system during the switching process. The system can effectively reduce the irreversible damage caused by the hard switching of high-voltage and high-current switching devices, and reduce system impact, thereby improving the stability and efficiency of the charging system.

[0026] In a third aspect of the present application, an electronic device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the program, any of the above method steps is implemented.

[0027] In a fourth aspect of the present application, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores instructions, and when the instructions are executed, any of the above method steps is performed.

[0028] In summary, one or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0029] 1. It can effectively reduce the irreversible damage caused by hard switching of high-voltage and high-current switching devices, and reduce system impact, thereby improving the stability and efficiency of the charging system;

[0030] 2. The investment in charging modules can be flexibly adjusted according to different charging requirements, thereby achieving efficient and energy-saving dynamic power allocation, reducing the energy consumption of the charging system and improving charging efficiency;

[0031] 3. Through a clear disconnection sequence, electrical accidents caused by incorrect operation can be avoided, failures caused by incorrect operation can be reduced, and the reliability of the system can be improved;

[0032] 4. By monitoring the target current value flowing through the bridge switch node and performing the disconnection operation only when the current value is lower than the preset threshold, the system shock caused by the sudden change of current can be effectively avoided, as well as the potential damage to the switch equipment and other system components. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the electrical structure of a semi-flexible switching circuit in the related art;

[0034] Figure 2 is a schematic diagram of the relationship between charging power and battery SOC provided in an embodiment of the present application;

[0035] Figure 3 is a schematic diagram of the relationship between the conversion efficiency and the load rate of the charging module provided in the embodiment of the present application;

[0036] Figure 4 is a flow chart of a dynamic power allocation method provided in an embodiment of the present application;

[0037] Figure 5 is a framework diagram of a dynamic power distribution system provided in an embodiment of the present application;

[0038] Figure 6 It is a node schematic diagram of a DC charging pile system provided in an embodiment of the present application;

[0039] Figure 7 It is a schematic diagram of the dynamic power allocation process of the DC charging pile system provided in an embodiment of the present application;

[0040] Figure 8 It is a schematic diagram of the structure of an electronic device disclosed in an embodiment of the present application.

[0041] Description of reference numerals: 800 - electronic device; 801 - processor; 802 - communication bus; 803 - user interface; 804 - network interface; 805 - memory. DETAILED DESCRIPTION

[0042] In order to enable technicians in this field to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments.

[0043] In the description of the embodiments of the present application, words such as "for example" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "for example" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "for example" or "for example" is intended to present related concepts in a specific way.

[0044] In the description of the embodiments of the present application, the term "plurality" means two or more. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. The terms "include", "comprise", "have" and their variations all mean "including but not limited to", unless otherwise specifically emphasized.

[0045] During the charging process, the device output is dynamically adjusted according to the BMS requirements. The relationship between the charging power and the battery SOC is as follows: Figure 2 As shown, when the SOC is low and high, the charging power is relatively small.

[0046] The conversion efficiency of the charging module is as follows: Figure 3 As shown in the figure, the efficiency is low under light load conditions, and generally shows an obvious turning point at around 30% load rate.

[0047] Taking the integrated dual-gun charging pile as an example, in the relevant technology, if only one gun is charging and the required power is large, the charging module mounted on the other gun will be switched over; if both guns are charging, the charging modules will not be switched to each other. The charging modules are switched as a group, and the set power of a single module is the required power divided by the allocated number, that is, the power is evenly divided, which can easily cause the problem of low conversion efficiency; in addition, in the relevant technology, when the power module is switched as a group, the bridge relay is directly controlled to close or open, and the pre-charging or shutdown operation is not performed. This hard switching of high-voltage and high-current switching devices also brings irreversible damage to the entire system and easily causes system shock at the moment of switching.

[0048] The present application provides a dynamic power allocation method, referring to Figure 4 , Figure 4 : is a flow chart of a dynamic power allocation method provided in an embodiment of the present application, comprising the following steps:

[0049] Step S401, obtaining working status information of the first output node;

[0050] Step S402, when the working state information indicates that the first output node is in a charging state, obtaining target charging demand information of the charging vehicle, wherein the charging vehicle is charged through the first output node;

[0051] Step S403, when the target charging demand information indicates that the current demand power is greater than the first preset power threshold, the second charging module is controlled to perform a pre-charging operation, and when the voltage difference on both sides of the bridge switch node is less than the preset voltage threshold, the bridge switch node is controlled to close, so that the second charging module is switched to the first output node to charge the charging vehicle, wherein each charging module node in the first charging module is connected to the first output node through a first bus, and each charging module node in the second charging module is connected to the second output node through a second bus, and a bridge switch node is arranged between the first bus and the second bus.

[0052] Through the above steps, when the charging vehicle is charged through the first output node and the current required power is greater than the first preset power threshold, the second charging module can be controlled to perform a pre-charging operation and close the bridge switch node when the voltage difference between the two sides of the bridge switch node is less than the preset voltage threshold, so that the second charging module can be smoothly switched to the first output node to provide charging for the charging vehicle. This method can effectively reduce the irreversible damage caused by hard switching of high-voltage and high-current switching devices, and reduce system impact, thereby improving the stability and efficiency of the charging system.

[0053] The dynamic power allocation method of the above embodiment of the present application can be applied to a DC charging pile system, such as a DC charging device for new energy vehicles. The above first output node and the second output node can be charging guns, for example, the first output node can be charging gun A or charging gun B, the second output node can be charging gun B or charging gun A, the bridge switch node can be a bridge relay, and the charging module nodes in the first charging module and the second charging module correspond to the charging modules (or power modules, or power modules, or power units) in the DC charging pile system.

[0054] In the above embodiment, when it is detected that the first output node (such as the first charging gun, or charging gun A) is charging and the charging demand power is greater than the first preset power threshold, the second charging module is controlled to perform a pre-charging operation, and the switch node is closed after the voltage difference on both sides of the bridge switch node reaches a safe range, so that the second charging module is smoothly switched to the first output node. This method significantly reduces the impact of the system switching moment and reduces the potential damage to the system. In the related art, when dual-gun charging is required, the entire group of power modules will be directly switched together. This method is not only easy to cause system impact, but also may cause irreversible damage to the entire system; this embodiment can reduce the voltage mutation caused by direct switching by pre-charging the second charging module, thereby reducing the impact on the system; avoiding damage caused by frequent high-current switching helps to extend the service life of the entire charging system; through dynamic power allocation, the power output can be flexibly adjusted according to the actual needs of the charging vehicle, so as to more effectively utilize the resources of the charging pile and improve the charging efficiency. The embodiment of the present application is not only applicable to integrated dual-gun charging piles, but also can provide a reference for power allocation and switching for more complex charging station systems.

[0055] For the above embodiment, an example is given. It is assumed that both the first charging module and the second charging module include N charging module nodes (or simply referred to as charging modules). In actual applications, the number of charging module nodes in the two charging modules may be the same or different, and there is no limitation on this. The rated power (or full load power) of each charging module node is P, and N is a positive integer greater than or equal to 1. Then, when the charging demand power is greater than N×P×φ1 (corresponding to the above-mentioned first preset power threshold), the second charging module is controlled to perform a pre-charging operation. φ1 can be regarded as the load rate of the charging module, and φ1 can be 90% (or 85%, or other).

[0056] In an optional embodiment, the above method also includes: when the target charging demand information indicates that the current demand power is less than or equal to the second preset power threshold, controlling the first charging module node to charge the charging vehicle, wherein the first charging module includes the first charging module node; when the target charging demand information indicates that the current demand power is greater than the second preset power threshold and less than or equal to the first preset power threshold, controlling the second charging module node to switch to the first output node to charge the charging vehicle, wherein the first charging module also includes the second charging module node.

[0057] In the above embodiment, when the target charging demand information of the charging vehicle indicates that the current required power is less than or equal to the second preset power threshold, the first charging module node is controlled to charge the charging vehicle; when the target charging demand information indicates that the current required power is greater than the second preset power threshold and less than or equal to the first preset power threshold, the second charging module node is controlled to switch to the first output node to charge the charging vehicle. This method can flexibly adjust the input of the charging module according to different charging requirements, thereby achieving efficient and energy-saving dynamic power allocation, reducing the energy consumption of the charging system and improving the charging efficiency.

[0058] By introducing a second preset power threshold, the method allows charging using only the first charging module node in the first charging module when the charging demand is low (less than or equal to the second preset power threshold). This strategy helps to reduce unnecessary module use when all power is not needed, thereby saving energy and extending the life of the equipment; when the charging demand is at a medium level (greater than the second preset power threshold and less than or equal to the first preset power threshold), the method allows module adjustment inside the first charging module, that is, switching the second charging module node to the first output node for charging. This strategy avoids unnecessary switching of the second charging module under low to medium power demands, reducing system complexity and potential switching shocks. By flexibly adjusting the charging strategy under different power demands, it helps the system respond to changes in charging demand more quickly while maintaining stable operation of the system. This helps to improve the overall service quality and user experience of the charging station.

[0059] Taking the first charging module including the first charging module node and the second charging module node as an example, assuming that the rated power of each charging module node in the first charging module is P, the second preset power threshold can be P×φ1, φ1=90% (or 85%, or others).

[0060] In the above embodiment, by dynamically adjusting power distribution according to the actual needs of the charging vehicles, the charging needs of different vehicles can be met more accurately, and the service quality and user satisfaction of the charging station can be improved; by dynamically controlling the switching of the first charging module node and the second charging module node, unnecessary power loss can be reduced, especially when the required power is low, only the first charging module node can be used for charging, thereby reducing the overall power loss; when the required power is high, through the pre-charging operation and the control of the bridge switch node, the second charging module can be switched to the first output node in time to provide the required high-power charging for the charging vehicle, shorten the charging time, and improve the operating efficiency of the charging station; by avoiding frequent hard switching of high-voltage and high-current switching devices, damage to the charging equipment can be reduced, the service life of the equipment can be extended, and maintenance costs can be reduced.

[0061] In an optional embodiment, when the target charging demand information indicates that the current demand power is greater than the first preset power threshold, the second charging module is controlled to perform a pre-charging operation, and when the voltage difference on both sides of the bridge switch node is less than the preset voltage threshold, the bridge switch node is controlled to close, so that the second charging module is switched to the first output node to charge the charging vehicle, including: when the target charging demand information indicates that the current demand power is greater than the first preset power threshold and less than or equal to the third preset power threshold, the third charging module node is controlled to perform a pre-charging operation, wherein the second charging module includes a third charging module node; when the voltage difference on both sides of the bridge switch node is less than the preset voltage threshold, the bridge switch node is controlled to close, so that the third charging module node is switched to the first output node to charge the charging vehicle.

[0062] In the above embodiment, when the target charging demand information of the charging vehicle indicates that the current demand power is greater than the first preset power threshold and does not exceed the third preset power threshold, the third charging module node in the second charging module can be controlled to perform a pre-charging operation. When the voltage difference on both sides of the bridge switch node is less than the preset voltage threshold, the bridge switch node is controlled to close, so that the third charging module node is switched to the first output node to charge the charging vehicle, thereby achieving efficient and smooth power distribution and avoiding system impact and loss caused by hard switching.

[0063] For ease of understanding, take the example that the first charging module and the second charging module each include two charging module nodes. For example, the first charging module includes a first charging module node and a second charging module node, and the second charging module includes a third charging module node and a fourth charging module node. Assuming that the rated power of each charging module node is P, the second preset power threshold is P×φ1, the first preset power threshold is 2×P×φ1, and the third preset power threshold can be 3×P×φ1, φ1=90% (or 85%, or other).

[0064] By pre-charging and monitoring the voltage difference on both sides of the bridge switch node, the bridge switch is closed only when the voltage difference is lower than the preset value, which can avoid voltage fluctuations caused by the sudden access of new modules and ensure the smooth operation of the system. In addition, when the required power exceeds the first preset power threshold but does not reach the third preset power threshold, switching the third charging module node to the first output node helps the system respond to changes in charging demand more quickly. This strategy helps maintain the stable operation of the system while improving charging efficiency; by reasonably scheduling charging modules at different power levels, the system can maintain a high utilization rate under various load conditions.

[0065] In an optional embodiment, the above method also includes: when the target charging demand information indicates that the current required power is greater than a third preset power threshold, controlling the fourth charging module node to switch to the first output node to charge the charging vehicle, wherein the second charging module includes a fourth charging module node.

[0066] In the above embodiment, when the current required power of the charging vehicle exceeds the third preset power threshold, the fourth charging module node can be controlled to switch to the first output node for charging, thereby improving the flexibility and charging efficiency of the charging system and ensuring stable power supply under high power demand.

[0067] By introducing the fourth charging module node, when the charging demand exceeds the third preset power threshold, it can be switched to the first output node, thereby significantly increasing the power provided to the charging vehicle, which ensures that the charging station can provide sufficient charging capacity even under extremely high power demand. Through this embodiment, the charging system can dynamically adjust the number of charging modules invested according to actual demand, and can more effectively utilize the total power resources of the charging station, thereby enhancing the adaptability and flexibility of the system and improving the operating efficiency of the charging station.

[0068] By allowing the system to flexibly enable different module combinations according to different power requirements, it can be ensured that the most suitable charging service can be provided under any circumstances; through strict conditional control (for example, new modules are allowed to be added only when specific conditions are met), it can be ensured that the safety and stability of the system are maintained even under high power requirements; the method of this embodiment enables the system to operate efficiently under various power requirements, avoiding idleness and waste of resources, and also reducing unnecessary energy loss.

[0069] Taking an integrated dual-gun charging pile as an example, the first output node is charging gun A, and the second output node is charging gun B. It is assumed that the first charging module includes two charging module nodes, such as the first charging module node (such as charging module 1) and the first charging module node (charging module 2), and the second charging module also includes two charging module nodes, such as the third charging module node (such as charging module 3) and the fourth charging module node (charging module 4). It is assumed here that each charging module is of the same specification and the rated power is 20KW.

[0070] When the current required power of the charging vehicle is less than or equal to 18KW (=0.9×20KW, equivalent to the above-mentioned second preset power threshold), it is only necessary to switch the charging module 1 to the first output node; when the current required power of the charging vehicle is greater than 18KW and less than or equal to 36KW (=0.9×40KW, equivalent to the above-mentioned first preset power threshold), it is necessary to switch the charging module 2 to the first output node to charge the charging vehicle together with the charging module 1. When the current power demand of the charging vehicle is greater than 36KW and less than or equal to 54KW (=0.9×60KW, equivalent to the third preset power threshold value mentioned above), the second charging module needs to be switched to the first output node. Because the second charging module and the first charging module (or the first output node) are across the bus, before switching, a certain charging module in the second charging module (such as charging module 3) is pre-charged. For example, the normal output voltage of each charging module is 500V. At this time, the charging module 3 can be pre-charged so that the output voltage of the charging module 3 is 495V (or others). In this way, the voltage difference on both sides of the bridge switch node can be less than the preset voltage threshold value (such as 10V, or others). Then, the bridge switch node is closed, that is, the charging module is officially switched to the first output node to charge the charging vehicle together. Similarly, when the current power demand of the charging vehicle is greater than 54KW, the charging module 4 needs to be switched to the first output node to charge the charging vehicle together with the charging modules 1 to 3.

[0071] Through dynamic power allocation, the utilization rate of charging equipment is improved, the idle power module is reduced, and thus the power loss is reduced; through pre-charging operation and intelligent control of bridge switch nodes, the impact on the system is reduced and the stability of the charging process is improved.

[0072] In an optional embodiment, after controlling the bridging switch node to close so that the third charging module node is switched to the first output node to charge the charging vehicle, the method also includes: when the target charging demand information indicates that the current demand power is less than or equal to the fourth preset power threshold, controlling the third charging module node to turn off the output, and, when it is determined that the current value flowing through the bridging switch node is less than the preset current threshold, controlling the bridging switch node to disconnect, wherein the first preset power threshold = 2×P×φ1, the second preset power threshold = P×φ1, the third preset power threshold = 3×P×φ1, the fourth preset power threshold = 3×P×φ2, P represents the rated power of each charging module node, φ1 represents the first load rate, φ2 represents the second load rate, and φ2<φ1; when the target charging demand information indicates that the current demand power is less than or equal to the fifth preset power threshold, controlling the second charging module node to turn off the output, wherein the fifth preset power threshold = 3×P×φ2.

[0073] In the above embodiment, it is further refined how to flexibly adjust the output of the charging module node and the state of the bridge switch node according to the actual needs of the charging vehicle and the operating status of the system during the dynamic power allocation process. In particular, when the charging demand decreases, how to effectively shut down unnecessary charging module nodes and when to disconnect the bridge switch nodes to ensure the safe and efficient operation of the system. By introducing different preset power thresholds and load rates, the system can perform more accurate power allocation according to different charging needs. This not only improves the utilization efficiency of resources, but also enables the system to better adapt to various complex charging scenarios.

[0074] When the current power demand of the charging vehicle decreases, such as when the charging vehicle is almost fully charged, the current power demand will gradually decrease. When the current power demand is less than or equal to the fourth preset power threshold, the third charging module node is first controlled to turn off the output, and the bridge switch node is controlled to disconnect according to the above conditions, that is, during the period when the current power demand decreases from the first preset power threshold to the fourth preset power threshold, the three charging modules (i.e., the first charging module, the second charging module and the third charging module) are still used to charge the charging vehicle together, ensuring that the load rate of the three charging modules is not less than φ2, until the current power demand is less than the fourth preset power threshold, the third node module is turned off, and the average load rate of the first charging module and the second charging module is close to 12%; when the current power demand continues to decrease to less than the fifth preset power threshold, the second charging module node is controlled to turn off the output, and before the second charging module node is turned off, the load rate of the first charging module node and the second charging module node is not less than φ2. The above first load rate φ1 can be understood as a heavy load rate, and the second load rate can be understood as a light load rate. As an example, the above φ1 can be taken as 90% (or 85%, or other), and φ2 can be taken as 40% (or 35%, or other).

[0075] In an optional embodiment, the method further comprises: when the working status information indicates that the first output node is not in a charging state, disconnecting the first bus bar and / or the second bus bar in a first preset order.

[0076] In the above embodiment, when it is detected that the first output node is not in a charging state, the system disconnects the first bus and / or the second bus in a preset order, thereby avoiding invalid connection and improving the safety and management efficiency of the system.

[0077] Disconnecting the busbar connection in the non-charging state can significantly reduce unnecessary energy consumption and improve the energy efficiency of the charging station; when the first output node is not in the charging state, the first busbar and / or the second busbar are disconnected in a predetermined order to reduce potential electrical safety hazards during the non-charging period; by cutting off unnecessary power connections, the energy loss of the system in the standby or inactive state can be reduced, and the overall energy efficiency can be improved; orderly management of the busbar connection status is conducive to safe operation during system maintenance and simplifies risk management and preventive measures during maintenance; this embodiment provides a mechanism for disconnecting the busbar connection in a first preset order, which helps to realize the automated management of the charging station. Through the preset order, the accuracy and consistency of the disconnection operation can be ensured, reducing the errors and risks caused by human operation.

[0078] In an optional embodiment, the first bus and / or the second bus are disconnected in a first preset order, including: when the second bus has been switched to the first output node, disconnecting the bridging switch node to disconnect the second bus; when the second bus has not been switched to the first output node and the first bus has been switched to the first output node, disconnecting the first output switch node to disconnect the first bus.

[0079] In the above embodiment, when the second bus has been switched to the first output node, the second bus is disconnected by disconnecting the bridge switch node, thereby avoiding unnecessary power loss and improving the efficiency of the system; when the second bus has not been switched to the first output node and the first bus has been switched to the first output node, the first bus is disconnected by disconnecting the first output switch node, thereby avoiding current loss and ensuring the stability and safety of the system.

[0080] This embodiment clearly stipulates that when the second bus is already connected to the first output node, the output of the second module should be terminated first, and then the bridge switch node should be disconnected to disconnect the second bus, thereby avoiding the risk of voltage or current mutation that may be caused by direct disconnection; when the second bus is not connected to the first output node, and the first bus is already connected, the first output switch node is disconnected to disconnect the first bus, so as to ensure that the system is in the safest state when there is no charging demand. In this embodiment, through a clear disconnection sequence, that is, first disconnecting the second bus that has been switched to the first output node (if it exists), and then disconnecting the first bus (if the second bus has not been switched and the first bus has been switched), electrical accidents caused by incorrect operations can be avoided, faults caused by incorrect operations can be reduced, and the reliability of the system can be improved. This sequence ensures that under no circumstances will the disconnection operation cause safety problems such as current mutation or short circuit.

[0081] In actual applications, the first output node (such as charging gun A) may be in an uncharged state due to various reasons, for example, equipment failure, or charging is manually stopped, or the charging vehicle is fully charged, etc. Then, when it is detected that the first output node is not in a charging state, the first bus and / or the second bus are disconnected in a first preset order. For example, if the second bus is also switched to the first output node before the charging gun A stops charging, at this time, the second bus should be disconnected first, and then the first bus should be disconnected.

[0082] In an optional embodiment, when the second bus has been switched to the first output node, the bridge switch node is disconnected to disengage the second bus, including: when the second bus has been switched to the first output node, obtaining a target current value flowing through the bridge switch node; when the target current value is less than a preset current threshold, disconnecting the bridge switch node to disengage the second bus.

[0083] In the above embodiment, when the second bus has been switched to the first output node, the target current value flowing through the bridge switch node is obtained, and the bridge switch node is disconnected when the target current value is less than the preset current threshold, thereby achieving safe disconnection of the second bus and effectively reducing system impact and damage caused by excessive current.

[0084] By monitoring the target current value flowing through the bridge switch node and performing the disconnection operation only when the current value is lower than the preset threshold, the system shock caused by the current mutation can be effectively avoided; this method can prevent the bridge switch node from being directly disconnected under high current conditions, thereby avoiding potential damage to the switch equipment and other system components, thus avoiding arcs or equipment damage caused by disconnection when the current is large, and improving the safety of the charging station. By controlling the current threshold to decide whether to disconnect, the second bus can be safely disconnected from the system while ensuring system stability.

[0085] In an optional embodiment, when the working status information indicates that the first output node is in a charging state, the target charging demand information of the charging vehicle is obtained, including: when the working status information indicates that the first output node is in a charging state, determining whether the first bus has been switched to the first output node; when the first bus has been switched to the first output node, obtaining the target charging demand information.

[0086] In the above embodiment, when the first output node is in a charging state, it is possible to determine whether to obtain the target charging demand information by judging whether the first bus has been switched to the first output node, thereby avoiding unnecessary waste of resources and improving the system work efficiency. Specifically, when the first output node is in a charging state, it is first determined whether the first bus has been switched to the first output node, and when the first bus has been switched to the first output node, the target charging demand information is obtained. In this way, the system only obtains the charging demand information under appropriate conditions, reduces invalid operations, and improves the work efficiency of the overall system.

[0087] Only when it is confirmed that the first bus has been connected to the first output node, the target charging demand information is obtained. This ensures that the acquired data accurately reflects the current charging demand and avoids invalid or erroneous data input. This method helps to improve the reliability of the system. By ensuring that data is read in the correct connection state, system anomalies or failures caused by uncertain connection status can be prevented. By ensuring that charging demand information is obtained in an accurate state, users can be provided with more stable and reliable charging services, thereby improving user experience.

[0088] In an optional embodiment, the method also includes: when the first bus is not switched to the first output node, determining whether the first bus is in an idle state; when the first bus is not in an idle state, disengaging the first bus so that the first bus enters an idle state; when the first bus is in an idle state, switching the first bus to the first output node.

[0089] In the above embodiment, when the first bus is not switched to the first output node, by judging whether the first bus is in an idle state and performing a disengagement or switching operation accordingly, the first bus can smoothly complete the process of switching to the first output node in an idle state, thereby ensuring the smooth progress of the charging operation and effectively improving the operating efficiency and reliability of the charging system.

[0090] In practical applications, when the first output node is in a charging state, the first bus may have been switched to the second output node for charging, that is, the first bus is not in an idle state. In this case, the first bus needs to be disconnected first and then switched to the first output node.

[0091] By judging whether the first bus is idle and disengaging it in a non-idle state, the first bus enters an idle state, which ensures more accurate power distribution and avoids power distribution errors caused by unclear state of the first bus. When the first bus is not switched to the first output node and is not idle, by disengaging it and re-switching it, the bus state can be quickly adjusted to meet charging needs, optimize the charging process, and improve charging efficiency; through reasonable bus adjustment, charging delays or failures caused by bus resource conflicts can be avoided, and the stability and reliability of the system can be improved. Timely bus adjustment can ensure that charging needs are responded to quickly, reduce user waiting time, and improve user experience.

[0092] The present application also provides a dynamic power allocation system for executing the dynamic power allocation method in any of the above embodiments. Figure 5 is a framework diagram of a dynamic power distribution system provided in an embodiment of the present application, the system comprising: a control node, a first charging module, a second charging module, a first output node, a second output node and a bridge switch node, wherein:

[0093] Each charging module node in the first charging module, each charging module node in the second charging module, the first output node, the second output node and the bridge switch node are respectively connected to the control node, each charging module node in the first charging module is connected to the first output node through a first bus, each charging module node in the second charging module is connected to the second output node through a second bus, and a bridge switch node is provided between the first bus and the second bus;

[0094] The control node is used to perform the following operations: obtain the working status information of the first output node; when the working status information indicates that the first output node is in a charging state, obtain the target charging demand information of the charging vehicle; when the target charging demand information indicates that the current demand power is greater than a first preset power threshold, control the second charging module to perform a pre-charging operation, and control the bridging switch node to close when the voltage difference on both sides of the bridging switch node is less than a preset voltage threshold, so that the second charging module is switched to the first output node to charge the charging vehicle.

[0095] In the above embodiment, the dynamic power distribution system can intelligently control the switching process of the first charging module and the second charging module according to the working status information of the first output node and the target charging demand information of the charging vehicle. When the current required power of the charging vehicle is greater than the first preset power threshold, the system controls the second charging module to perform a pre-charging operation, and closes the bridge switch node when the voltage difference on both sides of the bridge switch node is less than the preset voltage threshold, so that the second charging module is smoothly switched to the first output node, thereby effectively reducing the power loss of the charging system during the switching process. The system can effectively reduce the irreversible damage caused by the hard switching of high-voltage and high-current switching devices, and reduce system impact, thereby improving the stability and efficiency of the charging system.

[0096] In this embodiment, when it is detected that the first output node (such as the first charging gun, or charging gun A) is charging and the charging demand power is greater than the first preset power threshold, the second charging module is controlled to perform a pre-charging operation, and the switch node is closed after the voltage difference on both sides of the bridge switch node reaches a safe range, so that the second charging module is smoothly switched to the first output node. This method significantly reduces the impact of the system switching moment and reduces the potential damage to the system. In the related art, when dual-gun charging is required, the entire group of power modules will be directly switched together. This method is not only easy to cause system impact, but also may cause irreversible damage to the entire system; this embodiment can reduce the voltage mutation caused by direct switching by pre-charging the second charging module, thereby reducing the impact on the system; avoiding damage caused by frequent high-current switching helps to extend the service life of the entire charging system; through dynamic power allocation, the power output can be flexibly adjusted according to the actual needs of the charging vehicle, so as to more effectively utilize the resources of the charging pile and improve the charging efficiency. The embodiment of the present application is not only applicable to integrated dual-gun charging piles, but also can provide a reference for power allocation and switching for more complex charging station systems.

[0097] In practical applications, a switch node is set on the first bus, such as the first output switch node. Similarly, a switch node is set on the second bus, such as the second output switch node. Figure 5 Not shown.

[0098] It should be noted that the above-described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application will be described in detail below in conjunction with specific embodiments.

[0099] The embodiment of the present application provides a dynamic power distribution system and method for reducing power loss of a DC charging pile. The embodiment of the present application is described below.

[0100] 1. Abstract the electrical circuits and devices, consider the charging module as a module node, the output line as a bus node, the relay as a switch node, and the charging gun as an output node.

[0101] 2. Encapsulate the node variables with reference to the data structure of the C language linked list. The node variable structure contains other node pointer elements. When the system is initialized, the pointing relationship between each node is established. Figure 6 As shown in Figure 1, a connection relationship similar to that of an electrical system is formed. Figure 6 As shown, module node 1-module node 4 represent charging modules, target output nodes include output node A and output node B, bus nodes include bus node A and bus node B, and switch nodes can also be called bridge switch nodes. Take the pointer element contained in bus node A as an example, where the pointer of the directly subordinate output node points to which gun the bus is directly connected to, for example, bus node A directly belongs to output node A, and the pointer of the target output node can indicate which gun the bus is switched to, for example, output node A or output node B.

[0102] 3. Loop through the output nodes and perform dynamic control based on the current working status of the output nodes and vehicle demand. If the output node is charging, when the power allocation is insufficient, select an idle module to switch in, and give priority to the modules mounted on its subordinate bus. If the power is still insufficient, the modules on the adjacent bus can be switched in; when the power allocation is redundant, select an redundant module to switch out, and give priority to the modules on the adjacent bus. If all modules are disconnected, the bus can also be disconnected.

[0103] 4. Determine whether the charging module is operating in the high-efficiency range by estimating the ratio of the average power of the charging module to the rated power. If it is less than 40%, it is considered as excess allocation, and if it is greater than 90% and does not meet the vehicle demand, it is considered as insufficient allocation. At the same time, in order to prevent demand fluctuations from causing switching errors, a certain delay detection of vehicle demand and output power is required.

[0104] 5. In order to balance the working time of each charging module, the module selection during power distribution follows a certain sequence rule. For example, when output node A (corresponding to the first output node mentioned above) is put into operation, idle modules are selected in sequence, and when it is out of operation, excess modules are selected in reverse sequence. Conversely, when output node B (corresponding to the second output node mentioned above) is put into operation, idle modules are selected in reverse sequence, and when it is out of operation, excess modules are selected in sequence.

[0105] 6. When performing power switching across the bus, the impact needs to be minimized to achieve smooth switching and device protection. The module is turned on for pre-charging before the bus is connected, and closed when the voltage difference on both sides of the switch node is less than 10V; the module is turned off to cut off the output before the bus is disconnected, and disconnected when the current flowing through the switch node is less than 1A.

[0106] Figure 7 : is a schematic diagram of a dynamic power allocation process of a DC charging pile system provided in an embodiment of the present application, and the process includes:

[0107] S701, determine whether the gun is charging; the "gun" in this step can be any one of the two guns; assuming that the DC charging pile system includes charging gun A and charging gun B, the following takes the gun in this step as charging gun A (or called gun A) as an example for explanation;

[0108] When the judgment result of step S701 is no, proceed to step S702; when the judgment result of step S701 is yes, proceed to step S707;

[0109] S702, further determining whether other busbars are switched on;

[0110] For example, gun A is not currently being charged. In actual applications, gun A may be in an uncharged state due to a variety of reasons, such as equipment failure, or charging is manually stopped, or the charging vehicle is fully charged, etc. Therefore, gun A may be charging before it is in an uncharged state, and it is also possible that other busbars are switched in to charge the charging vehicle corresponding to gun A. In this step, it is first determined whether other busbars are switched in. Other busbars refer to busbars directly connected to gun B, or subordinate busbars of gun B, or busbars of the same group of gun B;

[0111] S703, when the judgment result of the above step S702 is yes, executing the power switching relay disconnection operation; that is, disconnecting the bridge switch node (or the bridge relay);

[0112] S704, the busbar is detached, and then the process proceeds to step S705; the busbar here refers to the subordinate busbar of gun B in step S702;

[0113] S705, when the judgment result of the above step S702 is no, that is, when other busbars have not been switched on, further judge whether the busbars of this group are switched on, that is, judge whether the busbars of this group of gun A are switched on;

[0114] When the judgment result of the above step S705 is yes, proceed to step S706; when the judgment result of the above step S705 is no, no operation is performed;

[0115] S706, busbar detachment, that is, the busbar of this group of gun A is detached;

[0116] S707, judging whether the busbars of this group have been switched on; that is, judging whether the busbars of this group corresponding to gun A have been switched on;

[0117] When the judgment result of step S707 is no, proceed to step S708; when the judgment result of step S707 is yes, proceed to step S712;

[0118] S708, further determining whether the busbars in this group are idle; that is, determining whether the busbars in this group corresponding to gun A are in an idle state;

[0119] Because in actual applications, when gun A is plugged into the corresponding charging vehicle and is ready to charge, gun B may use the charging module corresponding to gun A to charge the corresponding charging vehicle of gun B together. At this time, the bus corresponding to gun A is equivalent to executing the power switching across the bus to gun B. Therefore, when a charging vehicle needs to be charged at gun A, it is necessary to determine whether the bus corresponding to gun A is idle;

[0120] When the judgment result of step S708 is yes, proceed to step S709; when the judgment result of step S708 is no, proceed to step S710;

[0121] S709, the busbar group is assigned to the gun; that is, when the busbar group corresponding to gun A is in an idle state, that is, the charging module corresponding to gun A is not switched to gun B, at this time, the busbar group corresponding to gun A is assigned to gun A;

[0122] S710, busbar disconnection, that is, if the charging module corresponding to gun A is currently charging the charging vehicle corresponding to gun B, the busbar group corresponding to gun A needs to be disconnected;

[0123] S711, make the busbar idle; that is, make the busbar group corresponding to gun A idle;

[0124] S712, estimating module working efficiency; for example, estimating whether the power of a single charging module is sufficient, and the conversion efficiency of a single charging module, or the conversion efficiency of multiple charging modules, etc.;

[0125] S713, determining whether the efficiency is too high and cannot meet vehicle requirements; for example, when the efficiency is high enough (such as 90%, or others), the power may still be insufficient;

[0126] When the judgment result of step S713 is yes, proceed to step S714; when the judgment result of step S713 is no, proceed to step S719;

[0127] S714, further determining whether there is an idle module in the bus group;

[0128] For example, if the load rate of charging module 1 in the charging module corresponding to gun A (corresponding to the aforementioned first charging module) is greater than 90% but the power is insufficient, it can be further determined whether there are other charging modules in the charging module, such as charging module 2, or others;

[0129] When the judgment result of step S714 is no, proceed to step S715; when the judgment result of step S714 is yes, proceed to step S718;

[0130] S715, determining whether other buses are idle; that is, when there is no idle module in the bus group, further determining whether other buses have idle modules;

[0131] When the judgment result of step S715 is no, no operation is performed;

[0132] S716, when the judgment result of the above step S715 is yes, the power switching relay is closed;

[0133] S717, busbar merging; that is, other busbars are merged;

[0134] S718, select an idle module to switch over;

[0135] It should be noted that when entering step S718 from step S714, it means selecting an idle module from the busbar group to switch in; when entering step S718 from step S717, it means selecting an idle module from other busbars to switch in;

[0136] S719, determining whether the efficiency is too low and exceeds vehicle demand;

[0137] For example, the power of two (or more) charging modules can currently meet the vehicle charging requirements, but the efficiency of each charging module is low, such as 25%;

[0138] When the judgment result of step S719 is no, no operation is performed;

[0139] S720, when the judgment result of the above step S719 is yes, select a redundant module to be switched out;

[0140] S721, determine whether there are redundant modules in other buses;

[0141] When the judgment result of step S721 is no, no operation is performed;

[0142] S722, when the judgment result of the above step S721 is yes, executing the power switching relay disconnection operation;

[0143] S723, busbar detachment; that is, other busbars detach, such as the busbar corresponding to the above-mentioned B gun detachment.

[0144] In the above steps S720-S723, when there are redundant modules, it is preferred to switch out the charging modules corresponding to other busbars first.

[0145] Compared with the related art, the embodiments of the present application have at least the following technical effects: 1) Based on a semi-flexible switching circuit, a switching effect close to that of a fully flexible one is achieved. According to statistical data analysis of actual operations, power loss is reduced by about 20% to 30% compared with the old solution; 2) The probability of device damage is reduced and the service life of the device is extended; 3) Power regulation is highly real-time and the output power fluctuation is within a controllable range; 4) It is adaptable to equipment types of various specifications, and software maintenance is simple and reliable.

[0146] The present application also provides a computer-readable storage medium, in which instructions are stored. When the instructions are executed, any one of the method steps described above is executed.

[0147] In an exemplary embodiment, the computer-readable storage medium may include, but is not limited to, various media that can store computer programs, such as a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk.

[0148] The present application also discloses an electronic device. Figure 8 As shown, Figure 8 The electronic device 800 may include: at least one processor 801 , at least one network interface 804 , a user interface 803 , a memory 805 , and at least one communication bus 802 .

[0149] The communication bus 802 is used to realize the connection and communication between these components.

[0150] The user interface 803 may include a display screen (Display) and a camera (Camera). The optional user interface 803 may also include a standard wired interface and a wireless interface.

[0151] The network interface 804 may optionally include a standard wired interface or a wireless interface (such as a WI-FI interface).

[0152] Among them, the processor 801 may include one or more processing cores. The processor 801 uses various interfaces and lines to connect various parts of the entire electronic device (such as a server), and executes various functions of the server and processes data by running or executing instructions, programs, code sets or instruction sets stored in the memory 805, and calling data stored in the memory 805. Optionally, the processor 801 can be implemented in at least one hardware form of digital signal processing (Digital Signal Processing, DSP), field programmable gate array (Field-Programmable Gate Array, FPGA), and programmable logic array (Programmable Logic Array, PLA). The processor 801 can integrate one or a combination of a central processing unit (Central Processing Unit, CPU), a graphics processing unit (Graphics Processing Unit, GPU) and a modem. Among them, the CPU mainly processes the operating system, user interface and application programs; the GPU is responsible for rendering and drawing the content to be displayed on the display screen; the modem is used to process wireless communications. It can be understood that the above-mentioned modem may not be integrated into the processor 801, and it can be implemented separately through a chip.

[0153] Among them, the memory 805 may include a random access memory (Random Access Memory, RAM) and may also include a read-only memory (Read-Only Memory). Optionally, the memory 805 includes a non-transitory computer-readable storage medium. The memory 805 can be used to store instructions, programs, codes, code sets or instruction sets. The memory 805 may include a program storage area and a data storage area, wherein the program storage area may store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playback function, an image playback function, etc.), instructions for implementing the above-mentioned various method embodiments, etc.; the data storage area may store data involved in the above-mentioned various method embodiments, etc. The memory 805 may optionally also be at least one storage device located away from the aforementioned processor 801. Refer to Figure 8 , the memory 805 as a computer storage medium may include an operating system, a network communication module, a user interface module and an application program of a dynamic power allocation method.

[0154] exist Figure 8In the electronic device 800 shown, the user interface 803 is mainly used to provide an input interface for the user and obtain the data input by the user; and the processor 801 can be used to call an application program of a dynamic power allocation method stored in the memory 805, and when executed by one or more processors 801, the electronic device 800 executes one or more of the methods described in the above embodiments. It should be noted that for the aforementioned method embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited to the described order of actions, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required for the present application.

[0155] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0156] In the several embodiments provided in this application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are only schematic, such as the division of units, which is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some service interfaces, and the indirect coupling or communication connection of devices or units can be electrical or other forms.

[0157] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0158] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0159] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable memory. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, which is stored in a memory and includes several instructions for a computer device (which can be a personal computer, server or network device, etc.) to execute all or part of the steps of the various embodiments of the present application. The aforementioned memory includes: various media that can store program codes, such as USB flash drives, mobile hard drives, magnetic disks or optical disks.

[0160] The above is only an exemplary embodiment of the present disclosure and cannot be used to limit the scope of the present disclosure. That is, any equivalent changes and modifications made according to the teachings of the present disclosure are still within the scope of the present disclosure. After considering the disclosure of the specification and practice, those skilled in the art will easily think of other embodiments of the present disclosure.

[0161] This application is intended to cover any modifications, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary technical means in the technical field not recorded in the present disclosure.

Claims

1. A dynamic power allocation method, characterized in that: include: Obtaining working status information of the first output node; When the working state information indicates that the first output node is in a charging state, obtaining target charging demand information of a charging vehicle, wherein the charging vehicle is charged through the first output node; When the target charging demand information indicates that the current demand power is greater than a first preset power threshold, the second charging module is controlled to perform a pre-charging operation, and when the voltage difference between the two sides of the bridge switch node is less than a preset voltage threshold, the bridge switch node is controlled to be closed, so that the second charging module is switched to the first output node to charge the charging vehicle, wherein each charging module node in the first charging module is connected to the first output node through a first bus, each charging module node in the second charging module is connected to the second output node through a second bus, and the bridge switch node is provided between the first bus and the second bus; Wherein, the method further comprises: when the target charging demand information indicates that the current demand power is less than or equal to a second preset power threshold, controlling the first charging module node to charge the charging vehicle, wherein the first charging module includes the first charging module node; When the target charging demand information indicates that the current required power is greater than the second preset power threshold and less than or equal to the first preset power threshold, the second charging module node is controlled to switch to the first output node to charge the charging vehicle, wherein the first charging module also includes the second charging module node.

2. The method according to claim 1, characterized in that When the target charging demand information indicates that the current demand power is greater than a first preset power threshold, the second charging module is controlled to perform a pre-charging operation, and when the voltage difference between the two sides of the bridge switch node is less than a preset voltage threshold, the bridge switch node is controlled to be closed, so that the second charging module is switched to the first output node to charge the charging vehicle, including: When the target charging demand information indicates that the current required power is greater than the first preset power threshold and less than or equal to the third preset power threshold, controlling the third charging module node to perform a pre-charging operation, wherein the second charging module includes the third charging module node; When the voltage difference between the two sides of the bridge switch node is less than the preset voltage threshold, the bridge switch node is controlled to be closed, so that the third charging module node is switched to the first output node to charge the charging vehicle.

3. The method according to claim 2, characterized in that The method further comprises: When the target charging demand information indicates that the current required power is greater than the third preset power threshold, the fourth charging module node is controlled to switch to the first output node to charge the charging vehicle, wherein the second charging module includes the fourth charging module node.

4. The method according to claim 2, characterized in that: After controlling the bridge switch node to close so that the third charging module node is switched to the first output node to charge the charging vehicle, the method further includes: When the target charging demand information indicates that the current demand power is less than a fourth preset power threshold, the third charging module node is controlled to turn off the output, and when it is determined that the current value flowing through the bridge switch node is less than the preset current threshold, the bridge switch node is controlled to be disconnected, wherein the first preset power threshold = 2×P×φ1, the second preset power threshold = P×φ1, the third preset power threshold = 3×P×φ1, the fourth preset power threshold = 3×P×φ2, P represents the rated power of each charging module node, φ1 represents the first load rate, φ2 represents the second load rate, and φ2<φ1; When the target charging demand information indicates that the current required power is less than a fifth preset power threshold, the second charging module node is controlled to turn off output, wherein the fifth preset power threshold=2×P×φ2.

5. The method according to claim 1, characterized in that The method further comprises: When the working state information indicates that the first output node is not in a charging state, the first bus bar and / or the second bus bar are disconnected according to a first preset sequence.

6. The method according to claim 5, characterized in that Disconnecting the first busbar and / or the second busbar according to a first preset order includes: When the second busbar has been switched to the first output node, disconnecting the bridge switch node to disconnect the second busbar; When the second busbar is not switched to the first output node and the first busbar is switched to the first output node, the first output switch node is disconnected to disconnect the first busbar.

7. The method according to claim 6, characterized in that When the second busbar has been switched to the first output node, disconnecting the bridge switch node to disconnect the second busbar comprises: When the second bus has been switched to the first output node, obtaining a target current value flowing through the bridge switch node; When the target current value is less than a preset current threshold, the bridge switch node is disconnected to disconnect the second bus.

8. The method according to claim 1, characterized in that When the working state information indicates that the first output node is in a charging state, obtaining target charging demand information of the charging vehicle includes: When the working state information indicates that the first output node is in a charging state, determining whether the first bus has been switched to the first output node; When the first bus has been switched to the first output node, the target charging demand information is obtained.

9. A dynamic power distribution system, characterized in that: The method for executing the dynamic power allocation according to any one of claims 1 to 8 comprises: a control node, a first charging module, a second charging module, a first output node, a second output node and a bridge switch node, wherein: Each charging module node in the first charging module, each charging module node in the second charging module, the first output node, the second output node and the bridge switch node are respectively connected to the control node, each charging module node in the first charging module is connected to the first output node via a first bus, each charging module node in the second charging module is connected to the second output node via a second bus, and the bridge switch node is provided between the first bus and the second bus; The control node is used to perform the following operations: obtain the working status information of the first output node; when the working status information indicates that the first output node is in a charging state, obtain the target charging demand information of the charging vehicle; when the target charging demand information indicates that the current demand power is greater than a first preset power threshold, control the second charging module to perform a pre-charging operation, and control the bridging switch node to close when the voltage difference on both sides of the bridging switch node is less than a preset voltage threshold, so that the second charging module is switched to the first output node to charge the charging vehicle; and, when the target charging demand information indicates that the current demand power is less than or equal to the second preset power threshold, control the first charging module node to charge the charging vehicle, wherein the first charging module includes the first charging module node; when the target charging demand information indicates that the current demand power is greater than the second preset power threshold and less than or equal to the first preset power threshold, control the second charging module node to switch to the first output node to charge the charging vehicle, wherein the first charging module also includes the second charging module node.

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