Multi-gun charging flapping and expanding structure and charging control method

Abstract

The invention belongs to the technical field of flapping and expanding structures, and discloses a multi-gun charging flapping and expanding structure and a charging control method. The multi-gun charging extension structure comprises a power module, a plurality of groups of parallel contactors and a plurality of groups of output contactors; the power module comprises a plurality of groups of system modules and a plurality of groups of direct connection modules, and the plurality of groups of system modules are matched with the plurality of groups of direct connection modules; the multiple groups of parallel contactors are arranged between two adjacent system modules or between the system module and the direct connection module; the output contactors are connected with one ends of the direct connection modules, the multiple sets of output contactors are matched with the multiple sets of direct connection modules, and the multiple sets of parallel contactors comprise the multiple sets of first parallel contactors, the multiple sets of second parallel contactors and the multiple sets of third parallel contactors. The power of the charging module in the charging pile is efficiently utilized, resource waste is reduced, and the technical problems that in the prior art, an existing charging pile cannot meet the charging requirement when the high power requirement is met, and resource waste exists when the low power requirement is met are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of flutter structures and relates to a multi-gun charging flutter structure and a charging control method. Background Art

[0002] In recent years, with the global emphasis on environmental protection and the advancement of energy structure transformation, electric vehicles have developed rapidly with their advantages of zero emissions and low noise, and the market share has shown a trend of sustained rapid growth. As a key infrastructure to ensure the normal operation of electric vehicles, charging piles play a vital role in the daily travel experience of electric vehicle users due to their wide distribution, ease of use, performance and efficiency. An efficient and reliable charging pile network can eliminate users' "range anxiety" and promote the wider acceptance and use of electric vehicles.

[0003] Most traditional charging piles use a single fixed power module design, which can only charge electric vehicles with a pre-set fixed power output, and cannot dynamically adjust the power output according to the actual battery capacity, charging status, and maximum charging power supported by the vehicle itself. The types of vehicles that come to charge at different time periods are different, and their charging power requirements are uneven, resulting in the charging pile being unable to meet the charging requirements when the power demand is high, and there is a waste of resources when the power demand is low. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a multi-gun charging topology structure and a charging control method. By mixing and using different power modules, the power of the charging modules in the charging pile can be efficiently utilized to reduce resource waste, thereby solving the technical problem that the existing charging piles in the prior art cannot meet the charging requirements when the power demand is high and there is a waste of resources when the power demand is low.

[0005] In order to achieve the above object, the present invention adopts the following technical solution: The present invention provides a multi-gun charging topology structure, comprising: a power module, a plurality of groups of parallel contactors and a plurality of groups of output contactors; the power module comprises a plurality of groups of system modules and a plurality of groups of direct-connection modules, the plurality of groups of system modules are adapted to the plurality of groups of direct-connection modules; the plurality of groups of parallel contactors are arranged between two adjacent system modules or between a system module and a direct-connection module; the output contactor is connected to one end of the direct-connection module, the plurality of groups of output contactors are adapted to the plurality of groups of direct-connection modules, and the plurality of groups of parallel contactors comprises a plurality of groups of first parallel contactors, a plurality of groups of second parallel contactors and a plurality of groups of third parallel contactors.

[0006] Furthermore, multiple groups of the direct-connected modules, multiple groups of first parallel contactors, and system modules are connected in series in sequence to form a rectangular structure; multiple groups of the system modules, multiple groups of second parallel contactors are connected in series in sequence to form a rectangular structure; multiple groups of the direct-connected modules, multiple groups of third parallel contactors, and system modules are connected in series in sequence to form a rectangular structure.

[0007] Furthermore, the power of the direct-connect module is less than or equal to 20 kW, and the power of the system module is greater than 30 kW.

[0008] Furthermore, multiple groups of first parallel contactors include first parallel contactors k1, k2, k3, k4, k5, k6, k7, k8; multiple groups of second parallel contactors include second parallel contactors k9, k10, k11, k12, k13, k14, k15, k16; multiple groups of third parallel contactors include third parallel contactors k17, k18, k19, k20, k21, k22, k23, k24.

[0009] Furthermore, one end of the output contactor is connected to the direct connection module, and the other end is used to connect to the charging gun.

[0010] The present invention also provides a charging control method, based on the above-mentioned multi-gun charging topology structure, including the following steps: determining the required power and remaining power of the charging gun according to the number of vehicles that need to be charged and the charging power required for each vehicle; determining the power module ID assigned to each charging gun through a power algorithm, and calculating the connection path of the power module; and controlling the multiple groups of parallel contactors connected to the power module to be attracted through a control unit to start charging.

[0011] Furthermore, the power algorithm includes: if the remaining power is less than the maximum output power of the direct-connected module, only the direct-connected module is allocated; if the remaining power is greater than the maximum output power of the direct-connected module and less than the maximum output power of the system module, only the system module is allocated; if the remaining power is greater than the maximum output power of the system module and less than the sum of the maximum output powers of the direct-connected module and the system module, the direct-connected module and the system module are allocated; if the remaining power is greater than the sum of the maximum output powers of the direct-connected module and the system module, the direct-connected module and the system module are allocated.

[0012] Furthermore, there is only one direct connection module or system module for direct charging.

[0013] Furthermore, the remaining power is equal to the charging demand power minus the maximum output power of the allocated power module.

[0014] Furthermore, the plurality of charging guns are allocated to each allocation port in sequence from 1 gun to 8 guns on the basis of equal priority.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects: The present invention discloses a multi-gun charging topology structure, which adopts a mixed plug-in design of direct connection modules and system modules with different powers, and can better adapt to vehicles with various different power requirements; both the low-power charging requirements of small electric vehicles and the high-power fast charging requirements of high-performance electric vehicles can be met in the same charging system, which greatly improves the versatility and flexibility of the charging system and reduces the problem of low charging efficiency caused by mismatched charging power.

[0016] The multi-gun charging flutter structure of the present invention can dynamically select a suitable power module to work according to actual charging requirements. When electric vehicles with different power requirements come to charge, corresponding power modules can be deployed to avoid the occurrence of excess or insufficient power.

[0017] The present invention discloses a multi-gun charging topology structure, which adopts a mixed plug-in design of direct connection modules and system modules with different powers, and can increase redundancy; if a power module fails, other modules can continue to work, thereby reducing the impact of the failure on the charging service.

[0018] The present invention provides a multi-gun charging topology structure, and power modules with different powers can be replaced in the later stage to increase or decrease the rating of the charging pile to meet different operation scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a flutter diagram of a multi-gun charging flutter structure of the present invention. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0021] Example 1 The present invention provides a multi-gun charging flutter structure, such as Figure 1 As shown, it includes: a power module, multiple groups of parallel contactors and multiple groups of output contactors; the power module includes multiple groups of system modules and multiple groups of direct-connection modules, and the multiple groups of system modules are adapted to the multiple groups of direct-connection modules; the multiple groups of parallel contactors are arranged between two adjacent system modules or between a system module and a direct-connection module; the output contactor is connected to one end of the direct-connection module, the multiple groups of output contactors are adapted to the multiple groups of direct-connection modules, and the multiple groups of parallel contactors include multiple groups of first parallel contactors, multiple groups of second parallel contactors and multiple groups of third parallel contactors.

[0022] Specifically, a power module, multiple groups of parallel contactors, and multiple groups of output contactors constitute a multi-gun charging topology structure. The power module is composed of multiple direct-connected modules and multiple system modules. The multiple groups of parallel contactors are composed of multiple groups of first parallel contactors, multiple groups of second parallel contactors, and multiple groups of third parallel contactors.

[0023] Multiple groups of first parallel contactors are installed between two adjacent DC modules and the system module, multiple groups of second parallel contactors are installed between two adjacent system modules, and multiple groups of third parallel contactors are installed between two adjacent direct-connect modules and the system module.

[0024] The plurality of groups of direct connection modules include direct connection module S1 , direct connection module S2 , direct connection module S3 , direct connection module S4 , direct connection module S5 , direct connection module S6 , direct connection module S7 and direct connection module S8 .

[0025] The multiple groups of system modules include system module L1, system module L2, system module L3, system module L4, system module L5, system module L6, system module L7, and system module L8.

[0026] The plurality of groups of first parallel contactors include a first parallel contactor K1, a first parallel contactor K2, a first parallel contactor K3, a first parallel contactor K4, a first parallel contactor K5, a first parallel contactor K6, a first parallel contactor K7, and a first parallel contactor K8.

[0027] The plurality of groups of second parallel contactors include a second parallel contactor K9, a second parallel contactor K10, a second parallel contactor K11, a second parallel contactor K12, a second parallel contactor K13, a second parallel contactor K14, a second parallel contactor K15, and a second parallel contactor K16.

[0028] The plurality of groups of third parallel contactors include a third parallel contactor K17, a third parallel contactor K18, a third parallel contactor K19, a third parallel contactor K20, a third parallel contactor K21, a third parallel contactor K22, a third parallel contactor K23, and a third parallel contactor K24.

[0029] The direct-connected module S1, the system module L1, the direct-connected module S2, the system module L2, the direct-connected module S3, the system module L3, the direct-connected module S4, and the system module L4 are connected through multiple groups of first parallel contactors to form a rectangle; the direct-connected module S5, the system module L5, the direct-connected module S6, the system module L6, the direct-connected module S7, the system module L7, the direct-connected module S8, and the system module L8 are connected through multiple groups of third parallel contactors to form a rectangle; the system module L5, the system module L1, the system module L6, the system module L2, the system module L7, the system module L3, the system module L8, and the system module L4 are connected through multiple groups of second parallel contactors to form a rectangle.

[0030] In summary, the number of direct-connect modules, that is, S modules, is 8, and the number of system modules, that is, L modules, is 8. The power of the direct-connect modules and the system modules varies with the total power of the charging pile system. As shown in Table 1, if the total system power is 400kW, the power of the direct-connect module is 10kW, and the power of the system module is 40kW; if the total system power is 480kW, the power of the direct-connect module is 20kW, and the power of the system module is 40kW; if the total system power is 560kW, the power of the direct-connect module is 10kW, and the power of the system module is 60kW; if the total system power is 640kW, the power of the direct-connect module is 20kW, and the power of the system module is 60kW.

[0031] Table 1

[0032] Example 2 A charging control method comprises the following steps: determining the required power and the remaining power of a charging gun according to the number of vehicles to be charged and the required charging power of each vehicle; determining the power module ID assigned to each charging gun by a power algorithm, and calculating the connection path of the power module; and controlling the multiple groups of parallel contactors connected to the power module to be attracted by a control unit to start charging.

[0033] Specifically, an idle charging gun is connected to the vehicle. When the charging pile host receives a power-on command, the direct connection module corresponding to the charging gun is first turned on according to the set voltage and current, the output contactor corresponding to the charging gun is closed, and the direct connection module corresponding to the charging gun is allocated to the charging gun.

[0034] According to the received charging demand, the required power is calculated, and the remaining power is calculated at the same time. The remaining power is equal to the charging demand power minus the maximum output power of the allocated power module. Then, the next priority branch 1 module is allocated according to the preset allocation strategy. It should be noted that the charging guns allocate each allocation port in sequence from 1 gun to 8 guns on the basis of equal priority.

[0035] If there is only one direct-connect module or system module in the current priority of the branch, it will be directly allocated for charging. If there are multiple power modules that can be allocated in the current priority of the branch, they will be allocated according to the power algorithm. If the remaining power is less than the maximum output power of the direct-connect module, only the direct-connect module will be allocated; if the remaining power is greater than the maximum output power of the direct-connect module and less than the maximum output power of the system module, only the system module will be allocated; if the remaining power is greater than the maximum output power of the system module and less than the sum of the maximum output powers of the direct-connect module and the system module, the direct-connect module and the system module will be allocated; if the remaining power is greater than the sum of the maximum output powers of the direct-connect module and the system module, the direct-connect module and the system module will be allocated. Then continue to allocate the next priority module according to the preset allocation strategy until the power is met.

[0036] If there is no power module available in the current branch, branch 2 is used for allocation, and the allocation strategy is the same as branch 1. After the allocation is completed, the power module ID assigned to each charging gun is counted; then, according to the network topology and the assigned power module ID, the output path of each charging gun power is calculated, and the voltage and current of the power module assigned to each charging gun are set, and then the power is turned on to output power; finally, according to the output path of each charging gun power, the parallel contactors on the path are closed in turn to conduct the power circuit.

[0037] Example 3 A charging control method, taking charging gun 1 as an example. The power of the direct connection module is 20kW, and the power of the system module is 40kW. If the charging vehicle requires 80kW, the direct connection module S1, the system module L1, and the direct connection module S2 charge the vehicle, and the first parallel contactor K1 and the first parallel contactor K2 are closed.

[0038] As shown in Table 2, if the required power of the charging gun 1 is less than that of the direct connection module S1, the direct connection module S1 with priority 1 directly supplies power to the charging gun 1.

[0039] If the required power of the charging gun 1 is greater than that of the direct connection module S1 and less than that of the system module L1, the system module L1 with priority 2 will directly charge the charging gun 1.

[0040] If the required power of charging gun 1 is greater than that of direct connection module S1 and system module L1, the power is first supplied by direct connection module S1 and system module L1, and the remaining power is first supplied by direct connection module S2 with priority 3, closing the first parallel contactor K1 and the first parallel contactor K2. If the direct connection module S2 does not meet the remaining power demand, the system module L6 with priority 3 is supplied, closing the first parallel contactor K1 and the second parallel contactor K9. If the system module L6 does not meet the remaining power demand, the direct connection module S2 with priority 3 and the system module L6 are supplied at the same time, closing the first parallel contactor K1, the first parallel contactor K2, and the second parallel contactor K9.

[0041] If the required power of charging gun 1 is greater than that of direct connection module S1 and system module L1, it is powered by direct connection module S1 and system module L1 first. If the sum of direct connection module S2 and system module L6 does not meet the remaining power demand, it is powered by direct connection module S7 with priority 1, priority 2, priority 3 and priority 4, and the first parallel contactor K1, the first parallel contactor K2, the second parallel contactor K9 and the third parallel contactor K19 are closed. If direct connection module S7 does not meet the remaining power demand, it is powered by system module L2 with priority 1, priority 2, priority 3 and priority 4, and the first parallel contactor K1, the first parallel contactor K2, the second parallel contactor K9 and the first parallel contactor K3 are closed. If the system module L2 does not meet the remaining power demand, the direct-connected modules S7 of priority 1, priority 2, priority 3, and priority 4 and the system module L2 are powered at the same time, and the first parallel contactor K1, the first parallel contactor K2, the first parallel contactor K3, the second parallel contactor K9, the second parallel contactor K10, and the third parallel contactor K19 are closed.

[0042] If the required power of charging gun 1 is greater than that of direct connection module S1 and system module L1, it will be powered by direct connection module S1 and system module L1 first. If the sum of direct connection module S2, system module L6, direct connection module S7 and system module L2 does not meet the remaining power demand, it will be powered by direct connection module S3 with priority 1, priority 2, priority 3, priority 4 and priority 5. If direct connection module S3 does not meet the remaining power demand, it will be powered by system module L7 with priority 1, priority 2, priority 3, priority 4 and priority 5. If system module L7 does not meet the remaining power demand, it will be powered by direct connection module S3 and system module L7 with priority 1, priority 2, priority 3, priority 4 and priority 5 at the same time.

[0043] If the required power of charging gun 1 is greater than that of direct connection module S1 and system module L1, it will be powered by direct connection module S1 and system module L1 first. If the sum of direct connection module S2, direct connection module S3, system module L6, system module L7, direct connection module S7 and system module L2 does not meet the remaining power demand, it will be powered by direct connection module S8 with priority 1, priority 2, priority 3, priority 4, priority 5 and priority 6. If direct connection module S8 does not meet the remaining power demand, it will be powered by system module L3 with priority 1, priority 2, priority 3, priority 4, priority 5 and priority 6. If system module L3 does not meet the remaining power demand, it will be powered by direct connection module S8 and system module L3 with priority 1, priority 2, priority 3, priority 4, priority 5 and priority 6 at the same time.

[0044] If the required power of charging gun 1 is greater than that of direct connection module S1 and system module L1, it will be powered by direct connection module S1 and system module L1 first. If the sum of direct connection module S2, direct connection module S3, system module L6, system module L7, direct connection module S7, system module L2, direct connection module S8 and system module L3 does not meet the remaining power demand, it will be powered by direct connection module S4 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6 and priority 7. If direct connection module S4 does not meet the remaining power demand, it will be powered by system module L8 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6 and priority 7. If system module L8 does not meet the remaining power demand, it will be powered by direct connection module S4 and system module L8 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6 and priority 7 at the same time.

[0045] If the required power of charging gun 1 is greater than that of direct connection module S1 and system module L1, it will be powered by direct connection module S1 and system module L1 first. If the sum of direct connection module S2, direct connection module S3, system module L6, system module L7, direct connection module S7, system module L2, direct connection module S8, system module L3, direct connection module S4 and system module L8 does not meet the remaining power demand, it will be powered by direct connection module S5 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7 and priority 8. If direct connection module S5 does not meet the remaining power demand, it will be powered by system module L4 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7 and priority 8. If system module L4 does not meet the remaining power demand, it will be powered by direct connection module S5 and system module L4 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7 and priority 8 at the same time.

[0046] If the required power of charging gun 1 is greater than that of direct connection module S1 and system module L1, it will be powered by direct connection module S1 and system module L1 first. If the sum of direct connection module S2, direct connection module S3, system module L6, system module L7, direct connection module S7, system module L2, direct connection module S8, system module L3, direct connection module S4, system module L8, direct connection module S5 and system module L4 does not meet the remaining power demand, it will be powered by direct connection module S6 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, priority 8 and priority 9. If direct connection module S6 does not meet the remaining power demand, it will be powered by system module L5 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, priority 8 and priority 9. If system module L5 does not meet the remaining power demand, it will be powered by direct connection module S6 and system module L5 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, priority 8 and priority 9 at the same time.

[0047] It should be noted that if there is no power module allocated in branch 1, the power module in branch 2 is used for allocation, and the allocation strategy of branch 2 is the same as that of branch 1, as shown in Table 2.

[0048] Table 2 Power module allocation of charging gun 1

[0049] Example 4 A charging control method is described, taking charging gun 2 as an example. The power of the direct connection module is 20kW, and the power of the system module is 40kW, as shown in Table 3. If the required power of charging gun 2 is less than that of direct connection module S2, the direct connection module S2 with priority 1 directly supplies power to charging gun 2.

[0050] If the required power of the charging gun 2 is greater than that of the direct connection module S2 and less than that of the system module L2, the system module L2 with priority 2 directly charges the charging gun 2.

[0051] If the power demand of charging gun 2 is greater than that of direct connection module S2 and system module L2, the direct connection module S2 and system module L2 will supply power first, and the remaining power will be supplied by direct connection module S3 with priority 3. If the direct connection module S3 does not meet the remaining power demand, the system module L7 with priority 1, priority 2, and priority 3 will supply power. If the system module L7 does not meet the remaining power demand, the direct connection module S3 and system module L7 with priority 1, priority 2, and priority 3 will supply power at the same time.

[0052] If the required power of charging gun 2 is greater than that of direct connection module S2 and system module L2, it will be powered by direct connection module S2 and system module L2 first. If the sum of direct connection module S3 and system module L7 does not meet the remaining power demand, it will be powered by direct connection module S8 with priority 1, priority 2, priority 3 and priority 4. If direct connection module S8 does not meet the remaining power demand, it will be powered by system module L3 with priority 1, priority 2, priority 3 and priority 4. If system module L3 does not meet the remaining power demand, it will be powered by direct connection module S8 and system module L7 with priority 1, priority 2, priority 3 and priority 4 at the same time.

[0053] If the required power of charging gun 2 is greater than that of direct connection module S2 and system module L2, it will be powered by direct connection module S2 and system module L2 first. If the sum of direct connection module S3, system module L7, direct connection module S8 and system module L3 does not meet the remaining power demand, it will be powered by direct connection module S4 with priority 1, priority 2, priority 3, priority 4 and priority 5. If direct connection module S4 does not meet the remaining power demand, it will be powered by system module L8 with priority 1, priority 2, priority 3, priority 4 and priority 5. If system module L8 does not meet the remaining power demand, it will be powered by direct connection module S4 and system module L8 with priority 1, priority 2, priority 3, priority 4 and priority 5 at the same time.

[0054] If the required power of charging gun 2 is greater than that of direct connection module S2 and system module L2, it will be powered by direct connection module S2 and system module L2 first. If the sum of direct connection module S3, direct connection module S8, system module L7, system module L3, direct connection module S4 and system module L8 does not meet the remaining power demand, it will be powered by direct connection module S5 with priority 1, priority 2, priority 3, priority 4, priority 5 and priority 6. If direct connection module S5 does not meet the remaining power demand, it will be powered by system module L4 with priority 1, priority 2, priority 3, priority 4, priority 5 and priority 6. If system module L4 does not meet the remaining power demand, it will be powered by direct connection module S5 and system module L4 with priority 1, priority 2, priority 3, priority 4, priority 5 and priority 6 at the same time.

[0055] If the required power of charging gun 2 is greater than that of direct connection module S2 and system module L2, it will be powered by direct connection module S2 and system module L2 first. If the sum of direct connection module S3, system module L7, direct connection module S8, system module L3, direct connection module S4, system module L8, direct connection module S5 and system module L4 does not meet the remaining power demand, it will be powered by direct connection module S1 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6 and priority 7. If direct connection module S1 does not meet the remaining power demand, it will be powered by system module L5 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6 and priority 7. If system module L5 does not meet the remaining power demand, it will be powered by direct connection module S1 and system module L5 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6 and priority 7 at the same time.

[0056] If the required power of charging gun 2 is greater than that of direct connection module S2 and system module L2, it will be powered by direct connection module S2, system module L2, direct connection module S3, and system module L7 first. If the sum of direct connection module S8, system module L3, direct connection module S4, system module L8, direct connection module S5, system module L4, direct connection module S1, and system module L5 does not meet the remaining power demand, it will be powered by direct connection module S6 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, and priority 8. If direct connection module S6 does not meet the remaining power demand, it will be powered by system module L1 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, and priority 8. If system module L1 does not meet the remaining power demand, it will be powered by direct connection module S6 and system module L1 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, and priority 8 at the same time.

[0057] If the required power of charging gun 2 is greater than that of direct connection module S2 and system module L2, it will be powered by direct connection module S2 and system module L2 first. If the sum of direct connection module S3, system module L7, direct connection module S8, system module L3, direct connection module S4, system module L8, direct connection module S5, system module L4, direct connection module S1, system module L5, direct connection module S6 and system module L1 does not meet the remaining power demand, it will be powered by direct connection module S7 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, priority 8 and priority 9. If direct connection module S7 does not meet the remaining power demand, it will be powered by system module L6 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, priority 8 and priority 9. If system module L6 does not meet the remaining power demand, it will be powered by direct connection module S7 and system module L6 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, priority 8 and priority 9 at the same time.

[0058] It should be noted that if there is no power module allocated in branch 1, the power module in branch 2 is used for allocation, and the allocation strategy of branch 2 is the same as that of branch 1, as shown in Table 3.

[0059] Table 3 Power module allocation of charging gun 2

[0060] Example 5 A charging control method is described, taking charging gun 3 as an example. The power of the direct connection module is 20kW, and the power of the system module is 40kW, as shown in Table 4. If the required power of charging gun 3 is less than that of direct connection module S3, the direct connection module S3 with priority 1 directly supplies power to charging gun 3.

[0061] If the required power of the charging gun 3 is greater than that of the direct connection module S3 and less than that of the system module L3, the system module L3 with priority 2 directly charges the charging gun 3.

[0062] If the power demand of charging gun 3 is greater than that of direct connection module S3 and system module L3, the direct connection module S3 and system module L3 will be used to supply power first, and the remaining power will be supplied by direct connection module S4 with priority 3. If the direct connection module S4 does not meet the remaining power demand, the system module L8 with priority 1, priority 2, and priority 3 will supply power. If the system module L8 does not meet the remaining power demand, the direct connection module S4 and system module L8 with priority 1, priority 2, and priority 3 will supply power at the same time.

[0063] If the required power of charging gun 3 is greater than that of direct connection module S3 and system module L3, it will be powered by direct connection module S2 and system module L3 first. If the sum of direct connection module S4 and system module L8 does not meet the remaining power demand, it will be powered by direct connection module S5 with priority 1, priority 2, priority 3 and priority 4. If direct connection module S5 does not meet the remaining power demand, it will be powered by system module L4 with priority 1, priority 2, priority 3 and priority 4. If system module L4 does not meet the remaining power demand, it will be powered by direct connection module S5 and system module L4 with priority 1, priority 2, priority 3 and priority 4 at the same time.

[0064] If the required power of charging gun 3 is greater than that of direct connection module S3 and system module L3, it will be powered by direct connection module S3 and system module L3 first. If the sum of direct connection module S4, system module L8, direct connection module S5 and system module L4 does not meet the remaining power demand, it will be powered by direct connection module S1 with priority 1, priority 2, priority 3, priority 4 and priority 5. If direct connection module S1 does not meet the remaining power demand, it will be powered by system module L5 with priority 1, priority 2, priority 3, priority 4 and priority 5. If system module L5 does not meet the remaining power demand, it will be powered by direct connection module S1 and system module L5 with priority 1, priority 2, priority 3, priority 4 and priority 5 at the same time.

[0065] If the required power of charging gun 3 is greater than that of direct connection module S3 and system module L3, power will be supplied by direct connection module S3 and system module L3 first. If the sum of direct connection module S4, direct connection module S5, system module L8, system module L4, direct connection module S1 and system module L5 does not meet the remaining power demand, power will be supplied by direct connection module S6 with priority 1, priority 2, priority 3, priority 4, priority 5 and priority 6. If direct connection module S6 does not meet the remaining power demand, power will be supplied by system module L1 with priority 1, priority 2, priority 3, priority 4, priority 5 and priority 6. If system module L4 does not meet the remaining power demand, power will be supplied by direct connection module S6 and system module L1 with priority 1, priority 2, priority 3, priority 4, priority 5 and priority 6 at the same time.

[0066] If the required power of charging gun 3 is greater than that of direct connection module S3 and system module L3, it will be powered by direct connection module S3 and system module L3 first. If the sum of direct connection module S4, system module L8, direct connection module S5, system module L4, direct connection module S1, system module L5, direct connection module S6 and system module L1 does not meet the remaining power demand, it will be powered by direct connection module S2 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6 and priority 7. If direct connection module S2 does not meet the remaining power demand, it will be powered by system module L6 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6 and priority 7. If system module L6 does not meet the remaining power demand, it will be powered by direct connection module S2 and system module L6 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6 and priority 7 at the same time.

[0067] If the required power of charging gun 3 is greater than that of direct connection module S3 and system module L3, it will be powered by direct connection module S3, system module L3, direct connection module S4, and system module L8 first. If the sum of direct connection module S5, system module L4, direct connection module S1, system module L5, direct connection module S6, system module L1, direct connection module S2, and system module L6 does not meet the remaining power demand, it will be powered by direct connection module S7 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, and priority 8. If direct connection module S7 does not meet the remaining power demand, it will be powered by system module L2 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, and priority 8. If system module L2 does not meet the remaining power demand, it will be powered by direct connection module S7 and system module L2 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, and priority 8 at the same time.

[0068] If the required power of charging gun 3 is greater than that of direct connection module S3 and system module L3, power is supplied by direct connection module S3 and system module L3 first. If the sum of direct connection module S4, system module L8, direct connection module S5, system module L4, direct connection module S1, system module L5, direct connection module S6, system module L1, direct connection module S2, system module L6, direct connection module S7 and system module L2 does not meet the remaining power demand, power is supplied by direct connection module S8 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, priority 8 and priority 9. If direct connection module S8 does not meet the remaining power demand, power is supplied by system module L7 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, priority 8 and priority 9. If system module L7 does not meet the remaining power demand, power is supplied by direct connection module S8 and system module L7 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, priority 8 and priority 9 at the same time.

[0069] It should be noted that if there is no power module allocated in branch 1, the power module in branch 2 is used for allocation, and the allocation strategy of branch 2 is the same as that of branch 1, as shown in Table 4.

[0070] Table 4 Charging gun 3 power module allocation

[0071] Example 6 A charging control method is described, taking the charging gun 4 as an example. The power of the direct connection module is 20kW, and the power of the system module is 40kW, as shown in Table 5. If the required power of the charging gun 4 is less than that of the direct connection module S4, the direct connection module S4 with priority 1 directly supplies power to the charging gun 4.

[0072] If the required power of the charging gun 4 is greater than that of the direct connection module S4 and less than that of the system module L4, the system module L4 with priority 2 directly charges the charging gun 4.

[0073] If the power demand of charging gun 4 is greater than that of direct connection module S4 and system module L4, the direct connection module S4 and system module L4 will supply power first, and the remaining power will be supplied by direct connection module S1 with priority 3. If the direct connection module S1 does not meet the remaining power demand, the system module L5 with priority 1, priority 2, and priority 3 will supply power. If the system module L5 does not meet the remaining power demand, the direct connection module S1 and system module L5 with priority 1, priority 2, and priority 3 will supply power at the same time.

[0074] If the required power of charging gun 4 is greater than that of direct connection module S4 and system module L4, it will be powered by direct connection module S2 and system module L3 first. If the sum of direct connection module S1 and system module L5 does not meet the remaining power demand, it will be powered by direct connection module S6 with priority 1, priority 2, priority 3 and priority 4. If direct connection module S6 does not meet the remaining power demand, it will be powered by system module L1 with priority 1, priority 2, priority 3 and priority 4. If system module L1 does not meet the remaining power demand, it will be powered by direct connection module S6 and system module L1 with priority 1, priority 2, priority 3 and priority 4 at the same time.

[0075] If the required power of charging gun 4 is greater than that of direct connection module S4 and system module L4, it will be powered by direct connection module S4 and system module L4 first. If the sum of direct connection module S1, system module L5, direct connection module S6 and system module L1 does not meet the remaining power demand, it will be powered by direct connection module S2 with priority 1, priority 2, priority 3, priority 4 and priority 5. If direct connection module S2 does not meet the remaining power demand, it will be powered by system module L6 with priority 1, priority 2, priority 3, priority 4 and priority 5. If system module L6 does not meet the remaining power demand, it will be powered by direct connection module S2 and system module L6 with priority 1, priority 2, priority 3, priority 4 and priority 5 at the same time.

[0076] If the required power of charging gun 4 is greater than that of direct connection module S4 and system module L4, it will be powered by direct connection module S4 and system module L4 first. If the sum of direct connection module S1, direct connection module S6, system module L5, system module L1, direct connection module S2 and system module L6 does not meet the remaining power demand, it will be powered by direct connection module S7 with priority 1, priority 2, priority 3, priority 4, priority 5 and priority 6. If direct connection module S7 does not meet the remaining power demand, it will be powered by system module L2 with priority 1, priority 2, priority 3, priority 4, priority 5 and priority 6. If system module L2 does not meet the remaining power demand, it will be powered by direct connection module S7 and system module L2 with priority 1, priority 2, priority 3, priority 4, priority 5 and priority 6 at the same time.

[0077] If the required power of charging gun 4 is greater than that of direct connection module S4 and system module L4, it will be powered by direct connection module S4 and system module L4 first. If the sum of direct connection module S1, system module L5, direct connection module S6, system module L1, direct connection module S2, system module L6, direct connection module S7 and system module L2 does not meet the remaining power demand, it will be powered by direct connection module S3 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6 and priority 7. If direct connection module S3 does not meet the remaining power demand, it will be powered by system module L7 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6 and priority 7. If system module L7 does not meet the remaining power demand, it will be powered by direct connection module S3 and system module L7 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6 and priority 7 at the same time.

[0078] If the required power of charging gun 4 is greater than that of direct connection module S4 and system module L4, it is first powered by direct connection module S4, system module L4, direct connection module S1, and system module L5. If the sum of direct connection module S6, system module L1, direct connection module S2, system module L6, direct connection module S7, system module L2, direct connection module S3, and system module L7 does not meet the remaining power demand, it is powered by direct connection module S8 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, and priority 8. If direct connection module S8 does not meet the remaining power demand, it is powered by system module L3 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, and priority 8. If system module L3 does not meet the remaining power demand, it is powered by direct connection module S8 and system module L3 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, and priority 8 at the same time.

[0079] If the required power of charging gun 4 is greater than that of direct connection module S4 and system module L4, it is powered by direct connection module S4 and system module L4 first. If the sum of direct connection module S1, system module L5, direct connection module S6, system module L1, direct connection module S2, system module L6, direct connection module S7, system module L2, direct connection module S3, system module L7, direct connection module S8 and system module L3 does not meet the remaining power demand, it is powered by direct connection module S5 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, priority 8 and priority 9. If direct connection module S5 does not meet the remaining power demand, it is powered by system module L8 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, priority 8 and priority 9. If system module L7 does not meet the remaining power demand, it is powered by direct connection module S5 and system module L8 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, priority 8 and priority 9 at the same time.

[0080] It should be noted that if there is no power module allocated in branch 1, the power module in branch 2 is used for allocation, and the allocation strategy of branch 2 is the same as that of branch 1, as shown in Table 5.

[0081] Table 5 Charging gun 4 power module allocation

[0082] Example 7 A charging control method is described, taking the charging gun 5 as an example. The power of the direct connection module is 20kW, and the power of the system module is 40kW, as shown in Table 6. If the required power of the charging gun 5 is less than that of the direct connection module S5, the direct connection module S5 with priority 1 directly supplies power to the charging gun 5.

[0083] If the required power of the charging gun 5 is greater than that of the direct connection module S5 and less than that of the system module L5, the system module L5 with priority 2 directly charges the charging gun 5.

[0084] If the power demand of charging gun 5 is greater than that of direct connection module S5 and system module L5, the direct connection module S5 and system module L5 will be used to supply power first, and the remaining power will be supplied by direct connection module S6 with priority 3. If the direct connection module S6 does not meet the remaining power demand, the system module L1 with priority 1, priority 2, and priority 3 will supply power. If the system module L1 does not meet the remaining power demand, the direct connection module S6 and system module L1 with priority 1, priority 2, and priority 3 will supply power at the same time.

[0085] If the required power of the charging gun 5 is greater than that of the direct connection module S5 and the system module L5, the direct connection module S5 and the system module L5 will be used to supply power first. If the sum of the direct connection module S6 and the system module L1 does not meet the remaining power demand, the direct connection module S2 with priority 1, priority 2, priority 3 and priority 4 will be used to supply power. If the direct connection module S2 does not meet the remaining power demand, the system module L6 with priority 1, priority 2, priority 3 and priority 4 will be used to supply power. If the system module L6 does not meet the remaining power demand, the direct connection module S2 and the system module L6 with priority 1, priority 2, priority 3 and priority 4 will be used to supply power at the same time.

[0086] If the required power of charging gun 5 is greater than that of direct connection module S5 and system module L5, it will be powered by direct connection module S5 and system module L5 first. If the sum of direct connection module S6, system module L1, direct connection module S2 and system module L6 does not meet the remaining power demand, it will be powered by direct connection module S7 with priority 1, priority 2, priority 3, priority 4 and priority 5. If direct connection module S7 does not meet the remaining power demand, it will be powered by system module L2 with priority 1, priority 2, priority 3, priority 4 and priority 5. If system module L2 does not meet the remaining power demand, it will be powered by direct connection module S7 and system module L2 with priority 1, priority 2, priority 3, priority 4 and priority 5 at the same time.

[0087] If the required power of the charging gun 5 is greater than that of the direct connection module S5 and the system module L5, the direct connection module S5 and the system module L5 will be powered first. If the sum of the direct connection module S6, the direct connection module S1, the system module L2, the system module L6, the direct connection module S7 and the system module L2 does not meet the remaining power demand, the direct connection module S3 with priority 1, priority 2, priority 3, priority 4, priority 5 and priority 6 will be powered. If the direct connection module S3 does not meet the remaining power demand, the system module L7 with priority 1, priority 2, priority 3, priority 4, priority 5 and priority 6 will be powered. If the system module L7 does not meet the remaining power demand, the direct connection module S3 and the system module L7 with priority 1, priority 2, priority 3, priority 4, priority 5 and priority 6 will be powered at the same time.

[0088] If the required power of the charging gun 5 is greater than that of the direct connection module S5 and the system module L5, the direct connection module S5 and the system module L5 will be powered first. If the sum of the direct connection module S6, the system module L1, the direct connection module S2, the system module L6, the direct connection module S7, the system module L2, the direct connection module S3 and the system module L7 does not meet the remaining power demand, the direct connection module S8 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6 and priority 7 will be powered. If the direct connection module S8 does not meet the remaining power demand, the system module L3 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6 and priority 7 will be powered. If the system module L3 does not meet the remaining power demand, the direct connection module S8 and the system module L3 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6 and priority 7 will be powered at the same time.

[0089] If the required power of the charging gun 5 is greater than that of the direct connection module S5 and the system module L5, the power is first supplied by the direct connection module S5, the system module L5, the direct connection module S6, and the system module L1. If the sum of the direct connection module S2, the system module L6, the direct connection module S7, the system module L2, the direct connection module S3, the system module L7, the direct connection module S8, and the system module L3 does not meet the remaining power demand, the direct connection module S4 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, and priority 8 will be used for power supply. If the direct connection module S4 does not meet the remaining power demand, the system module L8 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, and priority 8 will be used for power supply. If the system module L8 does not meet the remaining power demand, the direct connection module S4 and the system module L8 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, and priority 8 will be used for power supply at the same time.

[0090] If the required power of the charging gun 5 is greater than that of the direct connection module S5 and the system module L5, the direct connection module S5 and the system module L5 will be used for power supply first. If the sum of the direct connection module S6, the system module L1, the direct connection module S2, the system module L6, the direct connection module S7, the system module L2, the direct connection module S3, the system module L7, the direct connection module S8, the system module L3, the direct connection module S4 and the system module L8 does not meet the remaining power demand, the direct connection module S1 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, priority 8 and priority 9 will be used for power supply. If the direct connection module S1 does not meet the remaining power demand, the system module L4 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, priority 8 and priority 9 will be used for power supply. If the system module L4 does not meet the remaining power demand, the direct connection module S1 and the system module L4 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, priority 8 and priority 9 will be used for power supply at the same time.

[0091] It should be noted that if there is no power module allocated in branch 1, the power module in branch 2 is used for allocation, and the allocation strategy of branch 2 is the same as that of branch 1, as shown in Table 6.

[0092] Table 6 Charging gun 5 power module allocation

[0093] Example 8 A charging control method is described, taking the charging gun 6 as an example. The power of the direct connection module is 20kW, and the power of the system module is 40kW, as shown in Table 7. If the required power of the charging gun 6 is less than that of the direct connection module S6, the direct connection module S6 with priority 1 directly supplies power to the charging gun 6.

[0094] If the required power of the charging gun 6 is greater than that of the direct connection module S6 and less than that of the system module L6, the system module L6 with priority 2 directly charges the charging gun 6.

[0095] If the power demand of charging gun 6 is greater than that of direct connection module S6 and system module L6, the direct connection module S6 and system module L6 will supply power first, and the remaining power will be supplied by direct connection module S7 with priority 3. If the direct connection module S7 does not meet the remaining power demand, the system module L2 with priority 1, priority 2, and priority 3 will supply power. If the system module L2 does not meet the remaining power demand, the direct connection module S7 and system module L2 with priority 1, priority 2, and priority 3 will supply power at the same time.

[0096] If the required power of charging gun 6 is greater than that of direct connection module S6 and system module L6, it will be powered by direct connection module S6 and system module L6 first. If the sum of direct connection module S7 and system module L2 does not meet the remaining power demand, it will be powered by direct connection module S3 with priority 1, priority 2, priority 3 and priority 4. If direct connection module S3 does not meet the remaining power demand, it will be powered by system module L7 with priority 1, priority 2, priority 3 and priority 4. If system module L7 does not meet the remaining power demand, it will be powered by direct connection module S3 and system module L7 with priority 1, priority 2, priority 3 and priority 4 at the same time.

[0097] If the required power of charging gun 6 is greater than that of direct connection module S6 and system module L6, it will be powered by direct connection module S6 and system module L6 first. If the sum of direct connection module S7, system module L2, direct connection module S3 and system module L7 does not meet the remaining power demand, it will be powered by direct connection module S8 with priority 1, priority 2, priority 3, priority 4 and priority 5. If direct connection module S8 does not meet the remaining power demand, it will be powered by system module L3 with priority 1, priority 2, priority 3, priority 4 and priority 5. If system module L3 does not meet the remaining power demand, it will be powered by direct connection module S3 and system module L3 with priority 1, priority 2, priority 3, priority 4 and priority 5 at the same time.

[0098] If the required power of charging gun 6 is greater than that of direct connection module S6 and system module L6, it will be powered by direct connection module S6 and system module L6 first. If the sum of direct connection module S7, direct connection module S2, system module L3, system module L7, direct connection module S8 and system module L3 does not meet the remaining power demand, it will be powered by direct connection module S4 with priority 1, priority 2, priority 3, priority 4, priority 5 and priority 6. If direct connection module S4 does not meet the remaining power demand, it will be powered by system module L8 with priority 1, priority 2, priority 3, priority 4, priority 5 and priority 6. If system module L8 does not meet the remaining power demand, it will be powered by direct connection module S4 and system module L8 with priority 1, priority 2, priority 3, priority 4, priority 5 and priority 6 at the same time.

[0099] If the required power of charging gun 6 is greater than that of direct connection module S6 and system module L6, it will be powered by direct connection module S6 and system module L6 first. If the sum of direct connection module S7, system module L2, direct connection module S3, system module L7, direct connection module S8, system module L3, direct connection module S4 and system module L8 does not meet the remaining power demand, it will be powered by direct connection module S5 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6 and priority 7. If direct connection module S5 does not meet the remaining power demand, it will be powered by system module L4 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6 and priority 7. If system module L4 does not meet the remaining power demand, it will be powered by direct connection module S5 and system module L4 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6 and priority 7 at the same time.

[0100] If the required power of charging gun 6 is greater than that of direct connection module S6 and system module L6, it will be powered by direct connection module S7, system module L2, direct connection module S3, and system module L7 first. If the sum of direct connection module S8, system module L3, direct connection module S4, system module L8, direct connection module S5, system module L4, direct connection module S1, and system module L5 does not meet the remaining power demand, it will be powered by direct connection module S1 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, and priority 8. If direct connection module S1 does not meet the remaining power demand, it will be powered by system module L5 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, and priority 8. If system module L5 does not meet the remaining power demand, it will be powered by direct connection module S1 and system module L5 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, and priority 8 at the same time.

[0101] If the required power of charging gun 6 is greater than that of direct connection module S6 and system module L6, power is supplied by direct connection module S6 and system module L6 first. If the sum of direct connection module S7, system module L2, direct connection module S3, system module L7, direct connection module S8, system module L3, direct connection module S4, system module L8, direct connection module S5, system module L4, direct connection module S1 and system module L5 does not meet the remaining power demand, power is supplied by direct connection module S2 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, priority 8 and priority 9. If direct connection module S2 does not meet the remaining power demand, power is supplied by system module L1 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, priority 8 and priority 9. If system module L1 does not meet the remaining power demand, power is supplied by direct connection module S2 and system module L1 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, priority 8 and priority 9 at the same time.

[0102] It should be noted that if there is no power module allocated in branch 1, the power module in branch 2 is used for allocation, and the allocation strategy of branch 2 is the same as that of branch 1, as shown in Table 7.

[0103] Table 7 Charging gun 6 power module allocation

[0104] Example 9 A charging control method is described, taking charging gun 7 as an example. The power of the direct connection module is 20kW, and the power of the system module is 40kW, as shown in Table 8. If the required power of charging gun 7 is less than that of direct connection module S7, the direct connection module S7 with priority 1 directly supplies power to charging gun 7.

[0105] If the required power of the charging gun 7 is greater than that of the direct connection module S7 and less than that of the system module L7, the system module L7 with priority 2 directly charges the charging gun 7.

[0106] If the power demand of charging gun 7 is greater than that of direct connection module S7 and system module L7, the direct connection module S7 and system module L7 will supply power first, and the remaining power will be supplied by direct connection module S8 with priority 3. If the direct connection module S8 does not meet the remaining power demand, the system module L3 with priority 1, priority 2, and priority 3 will supply power. If the system module L3 does not meet the remaining power demand, the direct connection module S8 and system module L3 with priority 1, priority 2, and priority 3 will supply power at the same time.

[0107] If the required power of charging gun 7 is greater than that of direct connection module S7 and system module L7, the power will be supplied by direct connection module S7 and system module L7 first. If the sum of direct connection module S8 and system module L3 does not meet the remaining power demand, the power will be supplied by direct connection module S4 with priority 1, priority 2, priority 3 and priority 4. If direct connection module S4 does not meet the remaining power demand, the power will be supplied by system module L8 with priority 1, priority 2, priority 3 and priority 4. If system module L8 does not meet the remaining power demand, the power will be supplied by direct connection module S4 and system module L8 with priority 1, priority 2, priority 3 and priority 4 at the same time.

[0108] If the power demand of charging gun 7 is greater than that of direct connection module S7 and system module L7, it will be powered by direct connection module S7 and system module L7 first. If the sum of direct connection module S8, system module L3, direct connection module S4 and system module L8 does not meet the remaining power demand, it will be powered by direct connection module S5 with priority 1, priority 2, priority 3, priority 4 and priority 5. If direct connection module S5 does not meet the remaining power demand, it will be powered by system module L5 with priority 1, priority 2, priority 3, priority 4 and priority 5. If system module L5 does not meet the remaining power demand, it will be powered by direct connection module S5 and system module L4 with priority 1, priority 2, priority 3, priority 4 and priority 5 at the same time.

[0109] If the power demand of charging gun 7 is greater than that of direct connection module S7 and system module L7, power will be supplied by direct connection module S7 and system module L7 first. If the sum of direct connection module S8, direct connection module S3, system module L4, system module L8, direct connection module S5 and system module L4 does not meet the remaining power demand, power will be supplied by direct connection module S1 with priority 1, priority 2, priority 3, priority 4, priority 5 and priority 6. If direct connection module S1 does not meet the remaining power demand, power will be supplied by system module L5 with priority 1, priority 2, priority 3, priority 4, priority 5 and priority 6. If system module L5 does not meet the remaining power demand, power will be supplied by direct connection module S1 and system module L5 with priority 1, priority 2, priority 3, priority 4, priority 5 and priority 6 at the same time.

[0110] If the required power of charging gun 7 is greater than that of direct connection module S7 and system module L7, it will be powered by direct connection module S7 and system module L7 first. If the sum of direct connection module S8, system module L3, direct connection module S4, system module L8, direct connection module S5, system module L4, direct connection module S1 and system module L5 does not meet the remaining power demand, it will be powered by direct connection module S6 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6 and priority 7. If direct connection module S6 does not meet the remaining power demand, it will be powered by system module L1 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6 and priority 7. If system module L1 does not meet the remaining power demand, it will be powered by direct connection module S6 and system module L1 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6 and priority 7 at the same time.

[0111] If the power demand of charging gun 7 is greater than that of direct connection module S7 and system module L7, it will be powered by direct connection module S8, system module L3, direct connection module S4, and system module L8 first. If the sum of direct connection module S5, system module L4, direct connection module S1, system module L5, direct connection module S6, system module L1, direct connection module S2, and system module L6 does not meet the remaining power demand, it will be powered by direct connection module S2 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, and priority 8. If direct connection module S2 does not meet the remaining power demand, it will be powered by system module L2 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, and priority 8. If system module L6 does not meet the remaining power demand, it will be powered by direct connection module S2 and system module L6 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, and priority 8 at the same time.

[0112] If the required power of charging gun 7 is greater than that of direct connection module S7 and system module L7, power is supplied by direct connection module S7 and system module L7 first. If the sum of direct connection module S8, system module L3, direct connection module S4, system module L8, direct connection module S5, system module L4, direct connection module S1, system module L5, direct connection module S6, system module L1, direct connection module S2 and system module L6 does not meet the remaining power demand, power is supplied by direct connection module S3 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, priority 8 and priority 9. If direct connection module S3 does not meet the remaining power demand, power is supplied by system module L2 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, priority 8 and priority 9. If system module L2 does not meet the remaining power demand, power is supplied by direct connection module S3 and system module L2 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, priority 8 and priority 9 at the same time.

[0113] It should be noted that if there is no power module allocated in branch 1, the power module in branch 2 is used for allocation, and the allocation strategy of branch 2 is the same as that of branch 1, as shown in Table 8.

[0114] Table 8 Charging gun 7 power module allocation

[0115] Example 10 A charging control method is described, taking the charging gun 8 as an example. The power of the direct connection module is 20kW, and the power of the system module is 40kW, as shown in Table 9. If the required power of the charging gun 8 is less than that of the direct connection module S8, the direct connection module S8 with priority 1 directly supplies power to the charging gun 8.

[0116] If the required power of the charging gun 8 is greater than that of the direct connection module S8 and less than that of the system module L8, the system module L8 with priority 2 directly charges the charging gun 8.

[0117] If the power demand of charging gun 8 is greater than that of direct connection module S8 and system module L8, the direct connection module S8 and system module L8 will supply power first, and the remaining power will be supplied by direct connection module S5 with priority 3. If the direct connection module S5 does not meet the remaining power demand, the system module L4 with priority 1, priority 2, and priority 3 will supply power. If the system module L4 does not meet the remaining power demand, the direct connection module S5 and system module L4 with priority 1, priority 2, and priority 3 will supply power at the same time.

[0118] If the required power of the charging gun 8 is greater than that of the direct connection module S8 and the system module L8, the direct connection module S8 and the system module L8 will be used to supply power first. If the sum of the direct connection module S5 and the system module L4 does not meet the remaining power demand, the direct connection module S1 with priority 1, priority 2, priority 3 and priority 4 will be used to supply power. If the direct connection module S1 does not meet the remaining power demand, the system module L5 with priority 1, priority 2, priority 3 and priority 4 will be used to supply power. If the system module L5 does not meet the remaining power demand, the direct connection module S1 and the system module L5 with priority 1, priority 2, priority 3 and priority 4 will be used to supply power at the same time.

[0119] If the required power of the charging gun 8 is greater than that of the direct connection module S8 and the system module L8, the direct connection module S8 and the system module L8 will be used to supply power first. If the sum of the direct connection module S5, the system module L4, the direct connection module S1 and the system module L5 does not meet the remaining power demand, the direct connection module S6 with priority 1, priority 2, priority 3, priority 4 and priority 5 will be used to supply power. If the direct connection module S6 does not meet the remaining power demand, the system module L1 with priority 1, priority 2, priority 3, priority 4 and priority 5 will be used to supply power. If the system module L1 does not meet the remaining power demand, the direct connection module S6 and the system module L1 with priority 1, priority 2, priority 3, priority 4 and priority 5 will be used to supply power at the same time.

[0120] If the required power of the charging gun 8 is greater than that of the direct connection module S8 and the system module L8, the direct connection module S8 and the system module L8 will be used to supply power first. If the sum of the direct connection module S5, the direct connection module S4, the system module L1, the system module L5, the direct connection module S6 and the system module L1 does not meet the remaining power demand, the direct connection module S2 with priority 1, priority 2, priority 3, priority 4, priority 5 and priority 6 will be used to supply power. If the direct connection module S2 does not meet the remaining power demand, the system module L6 with priority 1, priority 2, priority 3, priority 4, priority 5 and priority 6 will be used to supply power. If the system module L6 does not meet the remaining power demand, the direct connection module S2 and the system module L6 with priority 1, priority 2, priority 3, priority 4, priority 5 and priority 6 will be used to supply power at the same time.

[0121] If the required power of the charging gun 8 is greater than that of the direct connection module S8 and the system module L8, the direct connection module S8 and the system module L8 will be used to supply power first. If the sum of the direct connection module S5, the system module L4, the direct connection module S1, the system module L5, the direct connection module S6, the system module L1, the direct connection module S2 and the system module L6 does not meet the remaining power demand, the direct connection module S7 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6 and priority 7 will be used to supply power. If the direct connection module S7 does not meet the remaining power demand, the system module L2 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6 and priority 7 will be used to supply power. If the system module L2 does not meet the remaining power demand, the direct connection module S7 and the system module L2 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6 and priority 7 will be used to supply power at the same time.

[0122] If the required power of the charging gun 8 is greater than that of the direct connection module S8 and the system module L8, the power supply is first provided by the direct connection module S8, the system module L8, the direct connection module S5, and the system module L4. If the sum of the direct connection module S1, the system module L5, the direct connection module S6, the system module L1, the direct connection module S2, the system module L6, the direct connection module S7, and the system module L2 does not meet the remaining power demand, the direct connection module S3 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, and priority 8 will be used for power supply. If the direct connection module S3 does not meet the remaining power demand, the system module L7 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, and priority 8 will be used for power supply. If the system module L7 does not meet the remaining power demand, the direct connection module S3 and the system module L7 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, and priority 8 will be used for power supply at the same time.

[0123] If the required power of the charging gun 8 is greater than that of the direct connection module S8 and the system module L8, the direct connection module S8 and the system module L8 will be used for power supply first. If the sum of the direct connection module S5, the system module L4, the direct connection module S1, the system module L5, the direct connection module S6, the system module L1, the direct connection module S2, the system module L6, the direct connection module S7, the system module L2, the direct connection module S3 and the system module L7 does not meet the remaining power demand, the direct connection module S4 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, priority 8 and priority 9 will be used for power supply. If the direct connection module S4 does not meet the remaining power demand, the system module L3 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, priority 8 and priority 9 will be used for power supply. If the system module L3 does not meet the remaining power demand, the direct connection module S4 and the system module L3 with priority 1, priority 2, priority 3, priority 4, priority 5, priority 6, priority 7, priority 8 and priority 9 will be used for power supply at the same time.

[0124] It should be noted that if there is no power module allocated in branch 1, the power module in branch 2 is used for allocation, and the allocation strategy of branch 2 is the same as that of branch 1, as shown in Table 9.

[0125] Table 9 Charging gun 8 power module allocation

[0126] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A multi-gun charging flutter structure, characterized in that: include: Power modules, multiple sets of parallel contactors and multiple sets of output contactors; The power module includes multiple groups of system modules and multiple groups of direct-connect modules, and the multiple groups of system modules are adapted to the multiple groups of direct-connect modules; The multiple groups of parallel contactors are arranged between two adjacent system modules or between a system module and a direct-connection module; the output contactor is connected to one end of the direct-connection module, the multiple groups of output contactors are adapted to the multiple groups of direct-connection modules, and the multiple groups of parallel contactors include multiple groups of first parallel contactors, multiple groups of second parallel contactors and multiple groups of third parallel contactors.

2. The multi-gun charging flutter structure according to claim 1, characterized in that: Multiple groups of the direct connection modules, multiple groups of first parallel contactors, and system modules are sequentially connected in series to form a rectangular structure; Multiple groups of the system modules and multiple groups of second parallel contactors are sequentially connected in series to form a rectangular structure; A plurality of groups of the direct connection modules, a plurality of groups of the third parallel contactors, and the system modules are sequentially connected in series to form a rectangular structure.

3. The multi-gun charging flutter structure according to claim 2, characterized in that: The power of the direct-connect module is less than or equal to 20 kW, and the power of the system module is greater than 30 kW.

4. The multi-gun charging flutter structure according to claim 3, characterized in that: Multiple groups of first parallel contactors include first parallel contactors k1, k2, k3, k4, k5, k6, k7, k8; multiple groups of second parallel contactors include second parallel contactors k9, k10, k11, k12, k13, k14, k15, k16; multiple groups of third parallel contactors include third parallel contactors k17, k18, k19, k20, k21, k22, k23, k24.

5. The multi-gun charging flutter structure according to claim 1, characterized in that: One end of the output contactor is connected to the direct connection module, and the other end is used to connect to the charging gun.

6. A charging control method, characterized in that: The multi-gun charging flutter structure according to any one of claims 1 to 5 comprises the following steps: Determine the required power and remaining power of the charging gun based on the number of vehicles that need to be charged and the required charging power of each vehicle; Determine the power module ID assigned to each charging gun through the power algorithm and calculate the connection path of the power module; The control unit controls the multiple groups of parallel contactors connected to the power module to close and start charging.

7. The charging control method according to claim 6, characterized in that: The power algorithm includes: If the remaining power is less than the maximum output power of the direct-connected module, only the direct-connected module will be allocated; If the remaining power is greater than the maximum output power of the direct-connected module and less than the maximum output power of the system module, only the system module is allocated; If the remaining power is greater than the maximum output power of the system module and less than the sum of the maximum output powers of the direct-connected module and the system module, the direct-connected module and the system module are allocated; If the remaining power is greater than the sum of the maximum output powers of the direct-connect modules and the system modules, the direct-connect modules and the system modules are allocated.

8. The charging control method according to claim 7, characterized in that: There is only one direct connection module or system module for direct charging.

9. The charging control method according to claim 8, characterized in that: The remaining power is equal to the charging demand power minus the maximum output power of the allocated power module.

10. The charging control method according to claim 9, characterized in that: The plurality of charging guns are allocated to each allocation port in sequence from gun 1 to gun 8 on the basis of equal priority.

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