Power distribution circuit of charging pile and power distribution device thereof

Abstract

The utility model discloses a power distribution circuit of a charging pile and a power distribution device thereof. The power distribution circuit of the charging pile comprises N first power modules, M second power modules and at least one charging gun, the first power modules are sequentially connected in series to form a loop, a first switch module is arranged between every two adjacent first power modules, N is an integer greater than or equal to 4, and M is an integer greater than or equal to 1; wherein the second power module and the first power module are connected through the second switch module. The charging gun is connected with the first power module or the second power module. The N first power modules comprise first target power modules and second target power modules, the first target power modules are first power modules connected with the non-adjacent first power modules, and the second target power modules are first power modules not connected with the non-adjacent first power modules. According to the utility model, the power calling of the charging pile is flexible, and the line loss is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of charging piles, and in particular to a power distribution circuit and a power distribution device of a charging pile. Background Art

[0002] With the continuous development of new energy vehicles, the number of electric vehicles is increasing day by day, and the development and construction of charging piles are becoming more and more important.

[0003] When an electric vehicle is charging, in order to ensure the output power of the charging pile, multiple power modules inside the charging pile need to be used together. However, the internal structure of the existing charging pile is relatively complex, the call of the power module is not flexible, the efficiency is low, and the complex circuit leads to large losses. Utility Model Content

[0004] The utility model provides a power distribution circuit of a charging pile and a power distribution device thereof, so as to solve the problems of inflexible calling and large loss of the power module of the charging pile.

[0005] According to one aspect of the utility model, a power distribution circuit of a charging pile is provided, comprising:

[0006] N first power modules, the first power modules are sequentially connected in series to form a loop, wherein a first switch module is provided between every two adjacent first power modules, and N is an integer greater than or equal to 4;

[0007] M second power modules, where M is an integer greater than or equal to 1; wherein the second power module and the first power module are connected via a second switch module;

[0008] at least one charging gun, the charging gun being connected to the first power module or the second power module;

[0009] The N first power modules include a first target power module and a second target power module, the first target power module is a first power module connected to the non-adjacent first power module, and the second target power module is a first power module not connected to the non-adjacent first power module.

[0010] Optionally, the number of the second power modules is less than or equal to the number of the first power modules, that is, M≤N.

[0011] Optionally, the power distribution circuit of the charging pile includes:

[0012] a first branch and a second branch, wherein the first branch and the second branch are connected to form the loop;

[0013] A difference between the total power of the first branch and the total power of the second branch is less than a preset threshold.

[0014] Optionally, the total power of the first branch is equal to the total power of the second branch.

[0015] Optionally, when the powers of the first power modules and the second power modules are equal, the first target power module includes a first sub-power module and a second sub-power module; the first sub-power module and the second sub-power module are located at the main diagonal position of the loop.

[0016] Optionally, the number of the second power modules is the same as that of the first target power modules, and each of the second power modules is connected to one of the first target power modules; or,

[0017] The number of the second power modules is the same as the number of the second target power modules; each of the second power modules is connected to one of the second target power modules.

[0018] Optionally, when the second power module is connected to the first target power module through the second switch module, the charging gun is configured to be connected to the first target power module so that the first target power module can charge the electrical equipment connected to the charging gun by calling the three first power modules and one second power module connected to it.

[0019] Optionally, when the second power module is connected to the second target power module through the second switch module, the charging gun is configured to be connected to the second target power module so that the second target power module can charge the electrical equipment connected to the charging gun by calling two first power modules and one second power module connected to it.

[0020] Optionally, the power distribution circuit of the charging pile further includes:

[0021] A third switch module, the charging gun is connected to the first power module through the third switch module, or the charging gun is connected to the second power module through the third switch module.

[0022] According to another aspect of the utility model, a power distribution device for a charging pile is provided, comprising: a power distribution circuit for the charging pile according to any embodiment of the utility model;

[0023] A control module, wherein the control module is electrically connected to the first switch module and the second switch module of the power distribution circuit of the charging pile, and the control module is used to control the on and off of each of the first switch module and the second switch module to adjust the output power of the power distribution circuit of the charging pile.

[0024] The power distribution circuit of the charging pile provided by the embodiment of the utility model is provided with a first power module, a first switch module, a second power module, a second switch module and a charging gun. Through the closing and connection of the first switch module and the second switch module, the coordination and calling of each first power module and the second power module can be realized. By setting the number of the first target power modules to be less than the number of the first power modules, the use of the first switch modules is reduced, the wiring is simple and flexible, the number of the first switch modules is reduced, and the cost of the first switch modules is reduced. According to the location of the charging gun, a suitable first power module and / or second power module can be selected nearby, which reduces the power loss of the output power of the charging gun on the line and improves the calling efficiency of the power distribution circuit of the charging pile to the first power module and the second power module.

[0025] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present utility model, nor are they intended to limit the scope of the present utility model. Other features of the present utility model will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 It is a circuit diagram of a power distribution circuit of a charging pile provided according to an embodiment of the utility model;

[0028] Figure 2 It is a circuit diagram of another power distribution circuit of a charging pile provided according to an embodiment of the utility model;

[0029] Figure 3 It is a circuit diagram of a power distribution circuit of another charging pile provided according to an embodiment of the utility model;

[0030] Figure 4 It is a circuit diagram of a power distribution circuit of another charging pile provided according to an embodiment of the utility model;

[0031] Figure 5It is a circuit diagram of a power distribution circuit of another charging pile provided according to an embodiment of the utility model. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0033] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0034] The present invention provides a power distribution circuit for a charging pile. Figure 1 A circuit diagram of a power distribution circuit of a charging pile provided by an embodiment of the utility model, referring to Figure 1 , the circuit includes: N first power modules 1, M second power modules 3 and at least one charging gun 5, the first power modules 1 are connected in series in sequence to form a loop, wherein a first switch module 2 is provided between each two adjacent first power modules 1. N is an integer greater than or equal to 4, and M is an integer greater than or equal to 1. The second power module 3 and the first power module 1 are connected through a second switch module 4. The charging gun 5 is connected to the first power module 1 or the second power module 3. The N first power modules 1 include a first target power module 11 and a second target power module 12, the first target power module 11 is a first power module 1 connected to a non-adjacent first power module 1, and the second target power module 12 is a first power module 1 not connected to a non-adjacent first power module 1.

[0035] Specifically, the number of the first switch module 2 can be multiple. The first switch module 2 can be a switch component such as a contactor or a relay. The second switch module 4 can be a switch component such as a contactor or a relay. The first switch module 2 and the second switch module 4 can be the same or different, and no limitation is made here.

[0036] The first power module 1 and the second power module 3 are used for the power output of the charging pile, and provide output power to the charging gun 5. The first power modules 1 and the second power modules 3 can be combined to supply power to the charging gun 5 together. At this time, the charging power is equivalent to the power superposition of all the power modules used, and the charging power is higher; or a single first power module 1 or a second power module 3 can independently supply power to the charging gun 5. At this time, the charging power is equivalent to the charging power of one power module, and the charging power is smaller. In this way, by controlling the first switch module 2 and the second switch module 4 to flexibly allocate the output power of the charging gun 5, the needs of different charging scenarios can be met.

[0037] There are many ways to call the power module, and each first power module 1 and second power module 3 can be flexibly and arbitrarily combined. The power of the first power module 1 and the second power module 3 can be the same or different, and each first power module 1 and each second power module 3 includes a power unit. Exemplarily, the first power module 1 and the second power module 3 can be set to a 40kW power unit, a 30kW power unit, or a 50kW power unit, etc., without any limitation here.

[0038] For example, see Figure 1 , Figure 1 The first switch module 2 may include a first switch 21, a second switch 22, a third switch 23, a fourth switch 24 and a fifth switch 25. The first power module 1 may include a first power unit A1, a second power unit A2, a third power unit A3 and a fourth power unit A4. Figure 1 The first target power module 11 may include a first power unit A1 and a third power unit A3, and the second target power module 12 may include a second power unit A2 and a fourth power unit A4. The charging gun 5 may include a first charging gun M1 and a ninth charging gun M9. The second power module 3 may include a ninth power unit A9. The first charging gun M1 connected to the first target power module 11 is used to connect a load, that is, the device to be charged can be connected to the charging gun M1 to charge the device.

[0039] Among them, the first switch 21 is connected in series between the first power unit A1 and the second power unit A2, the second switch 22 is connected in series between the first power unit A1 and the fourth power unit A4, the third switch 23 is connected in series between the first power unit A1 and the third power unit A3, the fourth switch 24 is connected in series between the third power unit A3 and the fourth power unit A4, the fifth switch 25 is connected in series between the second power unit A2 and the third power unit A3, the first charging gun M1 is connected in series with the first power unit A1, and the ninth charging gun M9 is connected in series with the ninth power unit A9.

[0040] The power distribution circuit of the charging pile can call the first power unit A1, the second power unit A2, the third power unit A3, and the fourth power unit A4 by closing the first switch 21, the second switch 22, the third switch 23, the fourth switch 24, and the fifth switch 25. Exemplarily, when the power of each first power module 1 and the second power module 3 are equal, for example, each first power module 1 and each second power module 3 are 40kW power units, the first charging gun M1 outputs a charging power of 160kW, at this time, the ninth charging gun M9 can output a charging power of 40kW corresponding to the ninth power unit A9.

[0041] Figure 2 A circuit diagram of another power distribution circuit of a charging pile provided by an embodiment of the utility model, referring to Figure 2 ,exist Figure 1 On the basis of, a tenth power unit A10 is added as the second power module 3. The second switch module 4 may include a sixth switch 41 and a seventh switch 42, the sixth switch 41 is connected in series between the first power unit A1 and the tenth power unit A10, and the seventh switch 42 is connected in series between the third power unit A3 and the ninth power unit A9. Exemplarily, when the power of each first power module 1 and the second power module 3 is equal, for example, each first power module 1 and each second power module 3 is a 40kW power unit, the power distribution circuit of the charging pile can call the first power unit A1, the fourth power unit A4, and the tenth power unit A10 by closing the first switch 22 and the sixth switch 41, so that the first charging gun M1 outputs a charging power of 120kW. By closing the fifth switch 25 and the seventh switch 42, the second power unit A2, the third power unit A3 and the ninth power unit A9 can be called up. In this way, the ninth charging gun M9 also outputs a charging power of 120 kW. At this time, the power output by the first charging gun M1 and the ninth charging gun M9 is more even, and both the first charging gun M1 and the ninth charging gun M9 can guarantee better output power.

[0042] Figure 3 A circuit diagram of a power distribution circuit of another charging pile provided in an embodiment of the utility model, referring to Figure 3, the first power module 1 may further include a fifth power unit A5. Figure 1 On the basis of the first power module 1, the fifth power unit A5 is added as the first power module 1, and the first power unit A1 is directly connected to the fourth power unit A4 and the third power unit A3, wherein the first power unit A1, the third power unit A3 and the fourth power unit A4 serve as the first target power module 11, and the second power unit A2 and the fifth power unit A5 serve as the second target power module 12. This setting makes the calling method more diverse when the power distribution circuit calls the first power module 1, and increases the flexibility of calling each power unit.

[0043] In the embodiment of the utility model, the number of first target power modules 11 is generally set to be less than the number of first power modules 1, that is, at least one group of second target power modules 12 is set. With this arrangement, the first target power module 11 can call more first power modules 1 connected to it, so that the first power module 1 connected to the non-adjacent first power module 1 can call a larger number of first power modules 1 and second power modules 3, thereby reducing the power loss on the line. On the other hand, with this arrangement, the power output by at least two first target power modules 11 is more balanced, and the power output by at least two charging guns 5 is relatively high, supporting the application scenario in which both dual charging guns 5 in the same charging box can output high power. In addition, with this arrangement, the number of first switch modules 2 required for the second target power module 12 can be saved, and the cost of the power distribution circuit of the charging pile on the first switch module 2 can be reduced.

[0044] The power distribution circuit of the charging pile provided in the embodiment of the utility model is provided with a first power module 1, a first switch module 2, a second power module 3, a second switch module 4 and a charging gun 5. Through the closing and connection of the first switch module 2 and the second switch module 4, the coordination and calling between each first power module 1 and the second power module 3 can be realized. By setting the number of the first target power modules 11 to be less than the number of the first power modules 1, the use of the first switch modules 2 is reduced, the wiring is simple and flexible, the number of the first switch modules 2 is reduced, and the cost of the first switch modules 2 is reduced. According to the position of the charging gun 5, the appropriate first power module 1 and / or second power module 3 can be selected nearby, which reduces the power loss of the output power of the charging gun 5 on the line and improves the calling efficiency of the power distribution circuit of the charging pile to the first power module 1 and the second power module 2.

[0045] Figure 4 A circuit diagram of a power distribution circuit of another charging pile provided in an embodiment of the utility model, referring to Figure 4 On the basis of the above embodiments, optionally, the number of the second power modules 3 is less than or equal to the number of the first power modules 1 , that is, M≤N.

[0046] Specifically, under the premise of meeting the total power demand output by the power distribution circuit of the charging pile, a second power module 3 that is less than or equal to the first power module 1 can be set, so that the power distribution circuit of the charging pile can select the first power module 1 in the loop more often when calling each power module. This setting method is more flexible, and this setting method can also reduce the number of second switch modules 4 used, reduce the complexity of the power distribution circuit, make the wiring simple, and improve reliability.

[0047] Continue to refer Figure 4 On the basis of the above embodiments, optionally, the power distribution circuit of the charging pile includes a first branch 71 and a second branch 72, and the first branch 71 and the second branch 72 are connected to form a loop. The difference between the total power of the first branch 71 and the total power of the second branch 72 is less than a preset threshold.

[0048] For example, see Figure 4 , the first branch 71 includes the first power unit A1, the eighth power unit A8, the ninth power unit A9, the seventh power unit A7, the sixth power unit A6, and the twelfth power unit A12; the second branch 72 includes the second power unit A2, the third power unit A3, the fourth power unit A4, the fifth power unit A5, the tenth power unit A10, and the eleventh power unit A11. By setting the first branch 71 and the second branch 72, the output power of the power distribution circuit of the charging pile can be distributed to the first branch 71 and the second branch 72 to the greatest extent, so that high-power discharge can be performed in both the first branch 71 and the second branch 72. For example, when charging through the eighth charging gun M8, the eighth charging gun M8 calls all the power units in the first branch 71 for charging, and when charging through the third charging gun M3, the third charging gun M3 calls all the power units in the second branch 72 for charging. The eighth charging gun M8 and the third charging gun M3 will not reduce the power due to the conflict of calling the power unit. By setting the difference between the total power of the first branch and the total power of the second branch to be less than a preset threshold, it is ensured that the output power of the first branch 71 and the second branch 72 can both meet the requirements of high-power output, and avoid the situation where a certain charging gun 5 cannot output high-power electric energy due to uneven calling of each power unit. In this way, the power output of the first branch 71 and the second branch 72 is more balanced, ensuring the high-power discharge capability of the power distribution circuit of the charging pile.

[0049] In other embodiments, the first branch 71 and the second branch 72 are not limited to this setting method. The first branch 71 and the second branch 72 can select different settings according to the output power of each power unit, and it is required to satisfy that the difference between the total power of the first branch 71 and the total power of the second branch 72 is less than a preset threshold.

[0050] On the basis of the above embodiments, optionally, the total power of the first branch 71 is equal to the total power of the second branch 72 .

[0051] Specifically, when the total power of the first branch 71 is equal to the total power of the second branch 72, it is equivalent to the power distribution circuit of the charging pile distributing the total power that can be output evenly to the first branch 71 and the second branch 72. At this time, high-power discharge can be carried out in both the first branch 71 and the second branch 72.

[0052] Continue to refer Figure 4 On the basis of the above embodiments, optionally, when the powers of each first power module 1 and each second power module 3 are equal, the first target power module 11 includes a first sub-power module and a second sub-power module; the first sub-power module and the second sub-power module are located at the main diagonal position of the loop.

[0053] Specifically, Figure 4 It shows the situation that two first sub-power modules are connected to two second sub-power modules located at the diagonal position, and there is a first power module 1 between the two first power modules 1. By connecting the first sub-power module and the second sub-power module at the diagonal position, the power distribution circuit of the charging pile can have more selectivity when calling power. When charging with the charging gun 5 at the diagonal position, the power distribution circuit of the charging pile can directly call the first sub-power module and the second sub-power module at the diagonal position through the series connection between the first power modules 1 and the connection between the diagonals of the first sub-power module and the second sub-power module. The calling path is shorter, which reduces the line loss during charging.

[0054] Exemplarily, the first target power module 11 may include a second power unit A2, a fourth power unit A4, a sixth power unit A6 and an eighth power unit A8, the second power unit A2 is connected in series with the second charging gun M2, the fourth power unit A4 is connected in series with the fourth charging gun M4, the sixth power unit A6 is connected in series with the sixth charging gun M6, and the eighth power unit A8 is connected in series with the second eighth charging gun M8. The second target power module 12 may include a first power unit A1, a third power unit A3, a fifth power unit A5 and a seventh power unit A7, the first power unit A1 is connected in series with the first charging gun M1, the third power unit A3 is connected in series with the third charging gun M3, the fifth power unit A5 is connected in series with the fifth charging gun M5, and the seventh power unit A7 is connected in series with the seventh charging gun M7. By connecting the first sub-power module and the second sub-power module in the diagonal position in series, the power distribution circuit of the charging pile can have more options when distributing power. For example, when the eighth charging gun M8 is used for charging, the eighth power unit A8, the seventh power unit A7, the first power unit A1, and any adjacent first power module 1 in the loop can be called. Since the eighth power unit A8 is connected in series with the fourth power unit A4, the power distribution circuit of the charging pile can also directly call the fourth power unit A4 to provide power to the eighth charging gun M8. This can shorten the connection distance between the eighth power unit A8 and the fourth power unit A4, and there is no need to call the fourth power unit A4 after other first power modules 1. The loss in the circuit is reduced, and the efficiency of the power distribution circuit of the charging pile to charge the load through the charging gun 5 is improved. When the second charging gun M2 is used for charging, the power distribution circuit of the charging pile can call the first power unit A1 and the third power unit A3, and can also directly call the sixth power unit A6, which reduces the line loss when calling the sixth power unit A6.

[0055] Figure 5 A circuit diagram of a power distribution circuit of another charging pile provided in an embodiment of the utility model, referring to Figure 4 and Figure 5 On the basis of the above embodiments, optionally, the number of the second power modules 3 is the same as that of the first target power modules 11, and each second power module 3 is respectively connected to one first target power module 11. Alternatively, the number of the second power modules 3 is the same as that of the second target power modules 12; each second power module 3 is respectively connected to one second target power module 12.

[0056] Specifically, Figure 4It shows that the second power module 3 is connected to the first target power module 11 through the second switch module 4. The second power module 3 may include a ninth power unit A9, a tenth power unit A10, an eleventh power unit A11 and a twelfth power module A12. The charging gun 5 may include a ninth charging gun M9, a tenth charging gun M10, an eleventh charging gun M11 and a twelfth charging gun M12.

[0057] Among them, the ninth power unit A9, the tenth power unit A10, the eleventh power unit A11 and the twelfth power module A12 are respectively connected to the corresponding first target power module 11 through the second switch module 4. This setting method has high flexibility and can call more power modules. The calling of the second power unit A2, the fourth power unit A4, the sixth power unit A6 and the eighth power unit A8 is also more flexible, and the power output of each power unit when called is greater. For example, when the eighth charging gun M8 is used for charging, the power distribution circuit of the charging pile can call the first power unit A1, the seventh power unit A7, the eighth power unit A8, and the ninth power unit A9. If the output power is not satisfied, other adjacent modules can continue to be called.

[0058] Figure 5 The figure shows the situation that the second power module 3 is connected to the second target power module 12 through the second switch module 4, wherein the ninth power unit A9, the tenth power unit A10, the eleventh power unit A11 and the twelfth power unit A12 are respectively connected to the corresponding second target power module 12 through the second switch module 4. This arrangement enables each power unit in the first power module 1 to have three power units directly connected to it, and the three power units can be directly called, so that the power distribution circuit of the charging pile has a higher balance. For example, when charging with the charging gun M8, the power distribution circuit of the charging pile can directly call the seventh power unit A7, the first power unit A1 and the fourth power unit A4, and can also call symmetrically on both sides, for example, calling the sixth power unit A6 and the second power unit A2, so that the power signal input to the eighth charging gun M8 can be more balanced, so that the eighth charging gun M8 performs more stably when charging.

[0059] Continue to refer Figure 4 On the basis of the above embodiments, optionally, when the second power module 3 is connected to the first target power module 1 through the second switch module 4, the charging gun 5 is configured to be connected to the first target power module 11, so that the first target power module 11 charges the electrical equipment connected to the charging gun 5 by calling the three first power modules 1 and one second power module 3 connected thereto.

[0060] Specifically, when the second power module 3 is connected to the first target power module 11 through the second switch module 4, any first target power module 11 is connected to four branches. By closing the switch modules of the four branches, the three first power modules 1 and one second power module 3 connected to it can be quickly mobilized. For example, when the sixth charging gun M6 is used for charging, the sixth power unit A6 directly connected to the sixth charging gun M6 is put into operation, and the second power unit A2, the fifth power unit A5, the seventh power unit A7 and the twelfth power unit A12 connected to the sixth power unit A6 can be directly called, so that the sixth charging gun M6 can directly obtain the power of the five power modules.

[0061] Continue to refer Figure 5 On the basis of the above embodiments, optionally, when the second power module 3 is connected to the second target power module 12 through the second switch module 4, the charging gun 5 is configured to be connected to the second target power module 12, so that the second target power module 12 charges the electrical equipment connected to the charging gun 5 by calling the two first power modules 1 and one second power module 3 connected thereto.

[0062] Specifically, when the second power module 3 is connected to the second target power module 12 through the second switch module 4, any second target power module 12 is connected to three branches. By closing the switch modules of the three branches, the two first power modules 1 and one second power module 3 connected to it can be quickly mobilized. For example, when the first charging gun M1 is used for charging, the first power unit A1 directly connected to the first charging gun M1 is put into operation, and the second power unit A2, the eighth power unit A8 and the ninth power unit A9 connected to the first power unit A1 can be directly called, so that the first charging gun M1 can directly obtain the power of the four power modules.

[0063] Continue to refer Figure 4 and Figure 5 On the basis of the above embodiments, optionally, the power distribution circuit of the charging pile further includes a third switch module 6, and the charging gun 5 is connected to the first power module 1 through the third switch module 6, or the charging gun is connected to the second power module 3 through the third switch module 5.

[0064] Specifically, the third switch module 6 is used to control the on and off of the charging gun 5. Each charging gun 5 is connected to the first power module 1 or the second power module 3 through the third switch module 6. The number of charging guns 5 is the same as that of the third switch modules 6. Among them, at least one charging gun 5 is provided, and power can be transmitted to it by all power modules. The maximum number of charging guns 5 is the same as the number of power modules. Figure 4 and Figure 5As shown, there are 12 charging guns 5, namely the first charging gun M1 to the twelfth charging gun M12. In extreme cases, 12 vehicles can be charged at the same time, and the power of each charging gun 5 is the power of its corresponding power module.

[0065] The embodiment of the utility model provides a power distribution device for a charging pile, the device includes the power distribution circuit of the charging pile provided by any of the above embodiments. The device also includes a control module, the control module is electrically connected to the first switch module 2 and the second switch module 4 of the power distribution circuit of the charging pile, and the control module is used to control the on and off of each of the first switch module 2 and the second switch module 4 to adjust the output power of the power distribution circuit of the charging pile.

[0066] Specifically, the switch module can be a contactor or a relay, and the on and off of the contactor or the relay is controlled by the control module to control the mutual coordination between the first power module 1 and the second power module 3 to realize the power distribution of the charging pile. The control module can be various general and / or special processing components with processing and computing capabilities. Some examples of control modules include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, digital signal processors (DSPs), and any appropriate processors, controllers, microcontrollers, etc.

[0067] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0068] The above specific implementations do not constitute a limitation on the protection scope of the present utility model. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A power distribution circuit for a charging pile, characterized in that: include: N first power modules, the first power modules are sequentially connected in series to form a loop, wherein a first switch module is provided between every two adjacent first power modules, and N is an integer greater than or equal to 4; M second power modules, where M is an integer greater than or equal to 1; wherein the second power module and the first power module are connected via a second switch module; at least one charging gun, the charging gun being connected to the first power module or the second power module; The N first power modules include a first target power module and a second target power module, the first target power module is a first power module connected to the non-adjacent first power module, and the second target power module is a first power module not connected to the non-adjacent first power module.

2. The power distribution circuit of the charging pile according to claim 1, characterized in that: The number of the second power modules is less than or equal to the number of the first power modules, that is, M≤N.

3. The power distribution circuit of the charging pile according to claim 1, characterized in that: include: a first branch and a second branch, wherein the first branch and the second branch are connected to form the loop; A difference between the total power of the first branch and the total power of the second branch is less than a preset threshold.

4. The power distribution circuit of the charging pile according to claim 3, characterized in that: The total power of the first branch is equal to the total power of the second branch.

5. The power distribution circuit of the charging pile according to claim 1, characterized in that: When the powers of the first power modules and the second power modules are equal, the first target power module includes a first sub-power module and a second sub-power module; the first sub-power module and the second sub-power module are located at the main diagonal position of the loop.

6. The power distribution circuit of the charging pile according to claim 1, characterized in that: The number of the second power modules is the same as that of the first target power modules, and each of the second power modules is connected to one of the first target power modules; or, The number of the second power modules is the same as the number of the second target power modules; each of the second power modules is connected to one of the second target power modules.

7. The power distribution circuit of the charging pile according to claim 6, characterized in that: When the second power module is connected to the first target power module through the second switch module, the charging gun is configured to be connected to the first target power module so that the first target power module charges the electrical equipment connected to the charging gun by calling the three first power modules and one second power module connected to it.

8. The power distribution circuit of the charging pile according to claim 6, characterized in that: When the second power module is connected to the second target power module through the second switch module, the charging gun is configured to be connected to the second target power module so that the second target power module charges the electrical equipment connected to the charging gun by calling the two first power modules and one second power module connected to it.

9. The power distribution circuit of the charging pile according to claim 1, characterized in that: The power distribution circuit of the charging pile further includes: A third switch module, the charging gun is connected to the first power module through the third switch module, or the charging gun is connected to the second power module through the third switch module.

10. A power distribution device for a charging pile, characterized in that: include: The power distribution circuit of the charging pile according to any one of claims 1 to 9; A control module, wherein the control module is electrically connected to the first switch module and the second switch module of the power distribution circuit of the charging pile, and the control module is used to control the on and off of each of the first switch module and the second switch module to adjust the output power of the power distribution circuit of the charging pile.

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