Power distribution system

Abstract

The invention discloses a power distribution system. The power distribution system comprises a frame body, at least one bus and a plurality of switch modules, the bus is arranged on the frame body and is used for being coupled to at least one input line. Each switch module comprises a switch module main body and a control unit; the switch module main body is detachably arranged on the frame body and is provided with an input interface and an output interface; the input interface is coupled to the control unit and is connected to the bus, and the output interface is coupled to the control unit and is used for being coupled to at least one output line. The control unit is arranged in the switch module body and comprises a relay and a control circuit board which are coupled with each other.

Description

Technical Field

[0001] The present invention relates to an electric power system, and more particularly to an electric power distribution system. Background Art

[0002] Traditional switchboards do not have intelligent control functions, and require the installation of an additional intelligent control panel to provide measurement and controllable functions. This configuration requires the installation of multiple intelligent control panels due to the excessive number of circuits. It is not suitable for installation outdoors or in places with limited space, and its wiring is complicated. At present, some integrated switchboards include switchboards and intelligent control panels, and there is no need to install an additional intelligent control panel. However, the integrated switchboard has many parts and is complex to assemble. The number of circuits cannot be changed, and multiple sets of molds must be developed to correspond to products with different numbers of circuits, resulting in low production efficiency and high manufacturing costs. In addition, whether it is a traditional switchboard or an existing integrated switchboard, its multiple switching elements and multiple measuring elements are not modularly designed, but share a single control circuit board. Therefore, when a single channel fails, it needs to be dismantled as a whole for maintenance, resulting in low maintenance efficiency and a significant increase in user power outage time. Summary of the invention

[0003] The present invention provides a power distribution system, which can improve maintenance efficiency.

[0004] The power distribution system of the present invention includes a frame, at least one bus and a plurality of switch modules. The bus is arranged on the frame and is used to couple to at least one input line. Each switch module includes a switch module body and a control unit, and the switch module body is detachably arranged on the frame and has an input interface and an output interface. The input interface is coupled to the control unit and connected to the bus, and the output interface is coupled to the control unit and is used to couple to at least one output line. The control unit is arranged in the switch module body and includes a relay and a control circuit board coupled to each other.

[0005] In an embodiment of the present invention, each of the switch modules further includes a shunt and a voltage measuring unit. The shunt and the voltage measuring unit are disposed in the switch module body and coupled to the control circuit board.

[0006] In one embodiment of the present invention, the above-mentioned power distribution system further includes a plurality of connection terminals and a plurality of circuit breakers, wherein the connection terminals are arranged on a frame and correspond to the switch modules respectively, each connection terminal is plugged into an output interface of a corresponding switch module, the circuit breakers are detachably arranged on the frame and are respectively connected to the connection terminals, and each output interface is coupled to an output line through a corresponding connection terminal and a corresponding circuit breaker.

[0007] In one embodiment of the present invention, the frame includes a back plate and a base connected to each other, the base has a supporting surface and a bottom surface opposite to each other, a receiving space is provided between the back plate and the bottom surface, the switch modules are arranged in the receiving space, and the circuit breakers are arranged on the supporting surface.

[0008] In one embodiment of the present invention, the switch module body has two locking holes, the base has a plurality of openings, and the openings correspond to the locking holes of the switch module bodies respectively. Each switch module further includes two locking accessories, which pass through the corresponding two openings to be locked to the two locking holes of the corresponding switch module body respectively, and respectively resist the bus and the corresponding connection terminal.

[0009] In one embodiment of the present invention, each of the circuit breakers is suitable for being separated from the base to expose a portion of the openings.

[0010] In one embodiment of the present invention, the backplane includes a plurality of sub-backplanes, and the sub-backplanes are detachably connected in sequence.

[0011] In one embodiment of the present invention, the base body comprises a plurality of sub-base bodies, and the sub-base bodies are detachably connected in sequence.

[0012] In one embodiment of the present invention, the back plate has a plurality of first slide rails, the base has a plurality of second slide rails, the switch module body has a plurality of slide slots, and is slidably disposed between a first slide rail and a second slide rail via the slide slots.

[0013] In an embodiment of the present invention, the switch module body has a hook, and the hook is engaged with the base.

[0014] In one embodiment of the present invention, the base body has a plurality of openings, and the openings correspond to the switch modules respectively. The hook is suitable for being pressed through the corresponding openings to be separated from the base body.

[0015] In one embodiment of the present invention, the above-mentioned accommodation space includes two adjacent sub-accommodation spaces, a portion of the switch modules are arranged in sequence in one sub-accommodation space, and another portion of the switch modules are arranged in sequence in the other sub-accommodation space.

[0016] In one embodiment of the present invention, the above-mentioned bus has multiple first bus terminals and multiple second bus terminals. These first bus terminals are plugged into these switch modules in one sub-accommodation space along a first direction, and these second bus terminals are plugged into these switch modules in another sub-accommodation space along a second direction opposite to the first direction.

[0017] In one embodiment of the present invention, the above-mentioned power distribution system further includes a casing, wherein in the width direction of the power distribution system, the size of the casing is W, the size of each switch module is L, the installation gap between each switch module and the casing is a, the installation width of the bus is b, W=4*L+2*a+b<362mm.

[0018] In one embodiment of the present invention, each of the above-mentioned connecting terminals has a first end and a second end relative to each other, the first end is connected to the corresponding circuit breaker, and the second end is connected to the corresponding output interface. Each connecting terminal is inserted into the base body so that the base body is located between the first end and the second end, the second end is located in the accommodating space, and the bus is configured on the backplane and is located between the backplane and the second end.

[0019] In an embodiment of the present invention, the frame further comprises a plurality of supporting members supported between the back plate and the base, and each supporting member is located between two adjacent switch modules.

[0020] In one embodiment of the present invention, each of the supporting members is an I-shaped structure.

[0021] In one embodiment of the present invention, the bus includes a first phase bus and a second phase bus, and the frame further includes at least one insulating column supported between the back plate and the base and blocking between the first phase bus and the second phase bus.

[0022] In an embodiment of the present invention, each of the switch modules is suitable for being independently disassembled and separated from other switch modules, the circuit breakers and the frame.

[0023] In one embodiment of the present invention, the switch modules are coupled to each other via a daisy chain topology.

[0024] Based on the above, the power distribution system of the present invention includes multiple switch modules that are independent of each other, and each of these switch modules is provided with a control circuit board instead of sharing a single circuit board. Accordingly, when a single channel of the power distribution system fails, only the corresponding switch module can be removed for maintenance without removing all the switch modules as a whole, thereby improving maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 2 is a front view of a power distribution system according to an embodiment of the present invention.

[0026] Figure 2 yes Figure 1 Exploded view of the power distribution system.

[0027] Figure 3 yes Figure 2 An exploded view of some components of the power distribution system.

[0028] Figure 4 yes Figure 1 Schematic diagram of the power distribution system connecting the input lines and output lines.

[0029] Figure 5 yes Figure 1 A partial bottom view of the power distribution system.

[0030] Figure 6 yes Figure 3 The local structure of the power distribution system.

[0031] Figure 7 yes Figure 3 The local structure of the power distribution system.

[0032] Figure 8 yes Figure 7 An exploded view of some components of the power distribution system.

[0033] Fig. 9 Draw Figure 5 The internal structure of the switch module.

[0034] Fig.10 and Fig.11 yes Figure 7 Three-dimensional diagrams of some components of a power distribution system from different viewing angles.

[0035] Fig.12 yes Figure 6 Front view of the switch module.

[0036] Fig.13 yes Figure 6 Front view of the partial structure of the power distribution system.

[0037] Fig.14 yes Figure 6 Side view of the partial structure of the power distribution system.

[0038] Fig.15 yes Fig.13 A cross-sectional view of the power distribution system along line II.

[0039] Fig.16 yes Fig.15 Front view of the partial structure of the power distribution system.

[0040] Fig.17 yes Figure 6 A partial three-dimensional diagram of some components of a power distribution system.

[0041] Fig.18 yes Fig.17 A partial three-dimensional diagram of some components of a power distribution system.

[0042] Fig.19 yes Figure 6A partial three-dimensional diagram of some components of a power distribution system.

[0043] Fig. 20 yes Fig.19 Front view of the power distribution system.

[0044] Fig.21 yes Figure 6 A partial side view of some components of a power distribution system.

[0045] Fig. 22 Draw Figure 3 Partial structure of the seat body.

[0046] Fig.23 yes Fig. 22 A partial enlarged view of the seat.

[0047] Fig.24A and Fig. 24B Draw Fig. 22 The assembly method of the sub-base body.

[0048] Fig.25 Draw Figure 3 Part of the structure of the back panel.

[0049] Fig.26 Draw Figure 5 The two switch modules are respectively moved away from the two sub-accommodation spaces.

[0050] Wherein, the reference numerals are:

[0051] 50: Input line

[0052] 60: Output line

[0053] 100: Power distribution system

[0054] 110: Shell

[0055] 120:Frame

[0056] 122: Back panel

[0057] 1221: First slide rail

[0058] 122S: Sub-backplane

[0059] 124: base body

[0060] 1241: Second slide rail

[0061] 1242: Opening

[0062] 124a: bearing surface

[0063] 124b: Bottom

[0064] 124S: substomium

[0065] 126: Support

[0066] 128: Insulation column

[0067] 130: Cover

[0068] 140: switch module

[0069] 1401: Connection terminal

[0070] 141: Lock accessories

[0071] 142: Switch module body

[0072] 1421: Chute

[0073] 1422: Hook

[0074] 142a: Input interface

[0075] 142b: Output interface

[0076] 144: Control unit

[0077] 1441: Relay

[0078] 1442: Control circuit board

[0079] 146: Shunt

[0080] 148: Voltage measurement unit

[0081] 150: Circuit breaker

[0082] 160A: First phase bus

[0083] 160B: Second phase bus

[0084] 162A, 162B: First bus terminal

[0085] 164A, 164B: Second bus terminal

[0086] 170:Connection terminal

[0087] 170a: first end

[0088] 170b: Second end

[0089] D1: First direction

[0090] D2: Second direction

[0091] H1: Locking hole

[0092] H2: Opening

[0093] K1: Hook

[0094] K2: Buckle slot

[0095] P1: latch

[0096] P2: Pin hole

[0097] S: Accommodation space

[0098] S1, S2: Sub-accommodation space DETAILED DESCRIPTION

[0099] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention.

[0100] Figure 1 2 is a front view of a power distribution system according to an embodiment of the present invention. Figure 2 yes Figure 1 Exploded view of the power distribution system. Figure 3 yes Figure 2 Exploded view of some components of the power distribution system. Please refer to Figures 1 to 3 The power distribution system 100 of this embodiment includes a housing 110, a frame 120, a cover 130, a plurality of switch modules 140, and a plurality of circuit breakers 150. The frame 120 is disposed in the housing 110 and is used to carry the switch modules 140 and the circuit breakers 150. The cover 130 is pivotally connected to the housing 110 and is used to cover the housing 110 to cover the frame 120, the switch modules 140, the circuit breakers 150 and other components in the housing 110.

[0101] Figure 4 yes Figure 1 Schematic diagram of the power distribution system connecting the input and output lines. Please refer to Figure 4 The input line 50 (eg, an AC line) is used to input power to the switch module 140 , and the power is output from the switch module 140 to the output line 60 (eg, an AC line) through the circuit breaker 150 .

[0102] Figure 5 yes Figure 1 A partial bottom view of the power distribution system. Figure 6 yes Figure 3 The local structure of the power distribution system, Figure 7 yes Figure 3 The local structure of the power distribution system is shown in Figure 1. Figures 5 to 7 Part of the switch modules 140 and part of the circuit breakers 150 are shown in a removed state. Figure 8 yes Figure 7 Exploded view of some components of the power distribution system. Please refer to Figures 5 to 8Specifically, each switch module 140 of the present embodiment includes a switch module body 142, which is detachably disposed on the frame 120 and has an input interface 142a and an output interface 142b. The power distribution system 100 further includes at least one bus (illustrated as a first phase bus 160A and a second phase bus 160B) and a plurality of connection terminals 170. The first phase bus 160A and the second phase bus 160B are disposed on the frame 120 and are used to couple to Figure 2 The input line 50 shown in FIG. 1 has an input interface 142 a of a portion of the switch module body 142 connected to the first phase bus 160A, and an input interface 142 a of another portion of the switch module body 142 connected to the second phase bus 160B.

[0103] The connection terminals 170 are disposed on the frame 120 and correspond to the switch modules 140 respectively. Each connection terminal 170 is plugged into the output interface 142b of the switch module body 142 of the corresponding switch module 140. The circuit breakers 150 are detachably disposed on the frame 120 and are respectively connected to the connection terminals 170. The output interface 142b of each switch module body 142 is coupled to the corresponding connection terminal 170 and the corresponding circuit breaker 150. Figure 2 The output circuit 60 is shown. In addition, the switch modules 140 are coupled to each other, for example, through the connection terminals 1401 thereof through a daisy chain topology, so that signals and power can be transmitted therebetween.

[0104] Fig. 9 Draw Figure 5 The internal structure of the switch module. Fig. 9, each switch module 140 of the present embodiment further includes a control unit 144 disposed in the switch module body 142, and the input interface 142a and the output interface 142b of the switch module body 142 are coupled to the control unit 144. The control unit 144 includes a relay 1441 and a control circuit board 1442 coupled to each other. In addition, each switch module 140 further includes a shunt 146 and a voltage measuring unit 148, and the shunt 146 and the voltage measuring unit 148 are disposed in the switch module body 142 and coupled to the control circuit board 1442. In detail, the power enters the switch module 140 from the input interface 142a and reaches the relay 1441, and then reaches the shunt 146 through the control circuit board 1442, and then reaches the output interface 142b through the control circuit board 1442. Relay 1441 is used to open and close the power transmission of switch module 140, shunt 146 is used to sense current, voltage measuring unit 148 is used to measure voltage, control circuit board 1442 is used to control at least a part of the switch module 140 including the above-mentioned various functions, and the detailed functions and working principles of control circuit board 1442, relay 1441, shunt 146, and voltage measuring unit 148 are known technologies in the field of distribution boards and will not be elaborated here.

[0105] Compared to a conventional switchboard, at least one feature of the power distribution system 100 of the present embodiment is that the power distribution system 100 includes a plurality of switch modules 140 that are independent of each other as described above, and each of these switch modules 140 is provided with a control circuit board 1442 that integrates a voltage measuring unit 148, rather than sharing a single circuit board. Thus, each switch module 140 can be independently disassembled and separated from other switch modules 140, the circuit breaker 150, and the frame 120. Accordingly, when a single channel of the power distribution system 100 fails, only the corresponding switch module 140 can be disassembled for maintenance, without the need to disassemble all the switch modules 140 as a whole, thereby improving maintenance efficiency.

[0106] Fig.10 and Fig.11 yes Figure 7 The three-dimensional diagram of some components of the power distribution system from different perspectives. Please refer to Figure 7 , Fig.10 and Fig.11In this embodiment, the frame 120 includes a back plate 122 and a base 124 connected to each other. The base 124 has a supporting surface 124a and a bottom surface 124b opposite to each other. A receiving space S is defined between the back plate 122 and the bottom surface 124b of the base 124. The switch modules 140 are disposed in the receiving space S, and the circuit breakers 150 are disposed on the supporting surface 124a of the base 124. In addition, each connecting terminal 170 has a first end 170a and a second end 170b opposite to each other. The first end 170a is connected to the corresponding circuit breaker 150, and the second end 170b is connected to the output interface 142b of the corresponding switch module 140. Each connection terminal 170 is disposed in the base body 124 so that the base body 124 is located between the first end 170a and the second end 170b. The second end 170b is located in the accommodation space S. The first phase bus 160A and the second phase bus 160B are configured on the back plate 122 and located between the back plate 122 and the second end 170b.

[0107] With this configuration, the frame 120 forms a double-layer open installation structure with its back plate 122 and the base 124, and the bus (the first phase bus 160A and the second phase bus 160B) and the first end 170a and the second end 170b of the connection terminal 170 form a three-layer external terminal. Therefore, the circuit breaker 150 and the switch module 140 can be conveniently installed on the upper and lower layers of the frame 120 respectively and smoothly electrically connected with the connection terminal 170 through the bus (the first phase bus 160A and the second phase bus 160B).

[0108] Further, the accommodation space S of this embodiment includes two adjacent sub-accommodation spaces S1 and S2, and some switch modules 140 are arranged in sequence in the sub-accommodation space S1, and another part of the switch modules 140 are arranged in sequence in the sub-accommodation space S2. Fig.11 The first bus terminals 162A and the second bus terminals 164A are shown. The first bus terminals 162A are plugged into the switch modules 140 in the sub-accommodating space S1 along a first direction D1, and the second bus terminals 164A are plugged into the switch modules 140 in the sub-accommodating space S2 along a second direction D2 opposite to the first direction D1. Similarly, the second phase bus 160B is as shown in FIG. Fig.11The device is shown to have a plurality of first bus terminals 162B and a plurality of second bus terminals 164B. The first bus terminals 162B are plugged into a portion of the switch modules 140 in the sub-accommodation space S1 along a first direction D1, and the second bus terminals 164B are plugged into a portion of the switch modules 140 in the sub-accommodation space S2 along an opposite second direction D2. With this configuration, the bus (the first phase bus 160A and the second phase bus 160B) and the switch module 140 are compactly configured in the accommodation space S, thereby saving configuration space and reducing the overall device volume.

[0109] Fig.12 yes Figure 6 Front view of the switch module. Fig.13 yes Figure 6 Front view of the partial structure of the power distribution system. Please refer to Figure 6 , Figure 7 , Fig.12 and Fig.13 In this embodiment, each switch module body 142 has two locking holes H1, and the base 124 has a plurality of openings H2, which correspond to the locking holes H1 of the switch module bodies 142. Each circuit breaker 150 is suitable for being separated from the base 124 to expose a portion of the openings H2. Each switch module 140 further includes two locking attachments 141 (shown in FIG. Fig.12 and Fig.13 ), the two locking parts 141 pass through the corresponding two openings H2 to be locked to the corresponding two locking holes H1 of the switch module body 142, and as shown Fig. 9 The terminals shown respectively abut against the corresponding bus terminals (shown as the first bus terminals 162A of the first phase bus 160A) and the corresponding second end portions 170 b of the connection terminals 170 .

[0110] Fig.14 yes Figure 6 Side view of the partial structure of the power distribution system. Please refer to Figure 8 and Fig.14 In this embodiment, the back plate 122 has a plurality of first slide rails 1221, the base 124 has a plurality of second slide rails 1241, and each switch module body 142 has a plurality of slide grooves 1421, and is slidably disposed between a first slide rail 1221 and a second slide rail 1241 through these slide grooves 1421. Accordingly, each switch module body 142 can be smoothly installed to the frame 120 through the guidance of the first slide rails 1221 and the second slide rails 1241.

[0111] Fig.15 yes Fig.13 A cross-sectional view of the power distribution system along line II. Fig.16 yes Fig.15 Front view of the partial structure of the power distribution system. Please refer to Fig.15 and Fig.16 Each switch module body 142 has a hook 1422, and the base 124 has a plurality of openings 1242, which respectively correspond to the switch modules 140. The hook 1422 is engaged with the opening 1242 of the base 124 so that the switch module body 142 is firmly mounted on the frame 120. The hook 1422 is suitable for being pressed through the corresponding opening 1242 to be separated from the base 124, so that the switch module body 142 can be removed from the frame 120.

[0112] Fig.17 yes Figure 6 A partial three-dimensional diagram of some components of a power distribution system. Fig.18 yes Fig.17 A partial perspective view of some components of the power distribution system. Please refer to Fig.17 and Fig.18 The frame 120 of the present embodiment further includes a plurality of support members 126. The support members 126 are supported between the back plate 122 and the base 124. Fig.18 The structure shown is an I-shaped structure with a small thickness, so that each support member 126 can be arranged between two adjacent switch modules 140 without excessively occupying the configuration space of the switch modules 140.

[0113] Fig.19 yes Figure 6 A partial three-dimensional diagram of some components of a power distribution system. Fig. 20 yes Fig.19 Front view of the power distribution system. Fig.21 yes Figure 6 A partial side view of some components of the power distribution system. Please refer to Figures 19 to 21 The frame 120 of this embodiment further includes a plurality of insulating columns 128. The insulating columns 128 are supported between the back plate 122 and the base 124 and block between the terminals of the first phase bus 160A (the first bus terminal 162A and the second bus terminal 162B) and the terminals of the second phase bus 160B (the first bus terminal 164A and the second bus terminal 164B). As described above, the insulating columns 128 have both the functions of structural support and power isolation of different phases, which can simplify the structural design of the frame 120 and save configuration space.

[0114] Fig. 22 Draw Figure 3 Partial structure of the seat body. Fig.23 yes Fig. 22 A partial enlarged view of the seat. Fig.24A and Fig. 24B Draw Fig. 22 Please refer to the assembly method of the sub-base body. Figure 3 and Figures 22 to 24BIn this embodiment, the seat body 124 includes a plurality of sub-seat bodies 124S, which are detachably connected in sequence. Fig.23 ) can be inserted into the pin hole P2 (marked on the Fig.23 ), and the hook K1 of each sub-base body 124S can be as follows FIG. 24A to FIG. 24B The buckle groove K2 shown is buckled in another sub-base body 124S to quickly complete the connection of the two sub-base bodies 124S without other fasteners. Fig.25 Draw Figure 3 Similarly, the back panel 122 of this embodiment includes a plurality of sub-back panels 122S, which are detachably connected in sequence, and the connection method thereof is the same or similar to that of the sub-base body 124S, and will not be described again here. With this configuration, the user can change the number of sub-base bodies 124S and sub-back panels 122S according to the number of circuits required by the power distribution system, so as to flexibly expand the number of circuits and easily meet customized needs.

[0115] Fig.26 Draw Figure 5 The two switch modules are moved away from the two sub-accommodation spaces. Fig.26 In the width direction of the power distribution system 100 parallel to the first direction D1 and the second direction D2, the size of the housing 110 is W, the size of each switch module 140 is L, the installation gap between each switch module 140 and the housing 110 is a, and the installation width of the bus is b, then W = 4*L+2*a+b<362mm (the common width of European and American distribution boxes). Accordingly, the switch module 140 can have enough space for removal while minimizing the width of the housing 110.

[0116] In summary, the power distribution system of the present invention includes multiple switch modules that are independent of each other, and each of these switch modules is provided with a control circuit board instead of sharing a single circuit board. Accordingly, when a single channel of the power distribution system fails, only the corresponding switch module can be removed for maintenance without removing all the switch modules as a whole, thereby improving maintenance efficiency.

[0117] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A power distribution system, characterized in that: include: A frame; At least one bus, disposed on the frame and used to couple to at least one input line; as well as Multiple switch modules, each of which includes a switch module body and a control unit. The switch module body can be detachably configured on the frame and has an input interface and an output interface. The input interface is coupled to the control unit and connected to the at least one bus. The output interface is coupled to the control unit and is used to couple to at least one output line. The control unit is configured in the switch module body and includes a relay and a control circuit board coupled to each other.

2. The power distribution system according to claim 1, characterized in that: Each of the switch modules further includes a shunt and a voltage measuring unit. The shunt and the voltage measuring unit are disposed in the switch module body and coupled to the control circuit board.

3. The power distribution system according to claim 1, characterized in that: It further includes a plurality of connection terminals and a plurality of circuit breakers, wherein the connection terminals are arranged on the frame and correspond to the switch modules respectively, each of the connection terminals is plugged into the output interface of the corresponding switch module, the circuit breakers are detachably arranged on the frame and are respectively connected to the connection terminals, and the output interface is coupled to the at least one output line through the corresponding connection terminals and the corresponding circuit breakers.

4. The power distribution system according to claim 3, characterized in that: The frame includes a back plate and a base body connected to each other. The base body has a bearing surface and a bottom surface opposite to each other. A receiving space is provided between the back plate and the bottom surface. The switch modules are arranged in the receiving space. The circuit breakers are arranged on the bearing surface.

5. The power distribution system according to claim 4, characterized in that: The switch module body has two locking holes, the base body has a plurality of openings, the openings respectively correspond to the locking holes of the switch module bodies, and each switch module further includes two locking accessories, the two locking accessories respectively pass through the corresponding two openings to be respectively locked to the corresponding two locking holes of the switch module body, and respectively abut against the at least one bus and the corresponding connection terminal.

6. The power distribution system according to claim 5, characterized in that: Each of the circuit breakers is suitable for being separated from the base to expose a portion of the openings.

7. The power distribution system according to claim 4, characterized in that: The backplane includes a plurality of sub-backplanes, and the sub-backplanes are detachably connected in sequence.

8. The power distribution system according to claim 4, characterized in that: The base body includes a plurality of sub-base bodies, and the sub-base bodies are detachably connected in sequence.

9. The power distribution system according to claim 4, characterized in that: The back plate has a plurality of first slide rails, the seat body has a plurality of second slide rails, the switch module body has a plurality of slide slots, and is slidably disposed between one of the first slide rails and one of the second slide rails through the slide slots.

10. The power distribution system according to claim 4, characterized in that: The switch module body has a hook, and the hook is engaged with the base.

11. The power distribution system according to claim 10, characterized in that: The base has a plurality of openings, which respectively correspond to the switch modules. The hook is suitable for being pressed through the corresponding openings to be separated from the base.

12. The power distribution system according to claim 4, characterized in that: The accommodation space includes two sub-accommodation spaces adjacent to each other, a portion of the switch modules are arranged in sequence in one of the sub-accommodation spaces, and another portion of the switch modules are arranged in sequence in the other sub-accommodation space.

13. The power distribution system according to claim 12, characterized in that The at least one bus has a plurality of first bus terminals and a plurality of second bus terminals, the first bus terminals are plugged into the switch modules in one sub-accommodation space along a first direction, and the second bus terminals are plugged into the switch modules in another sub-accommodation space along a second direction opposite to the first direction.

14. The power distribution system according to claim 12, characterized in that It further includes a casing, wherein in the width direction of the power distribution system, the size of the casing is W, the size of each switch module is L, the installation gap between each switch module and the casing is a, the installation width of the at least one bus is b, W=4*L+2*a+b<362mm.

15. The power distribution system according to claim 4, characterized in that Each of the connecting terminals has a first end and a second end opposite to each other, the first end is connected to the corresponding circuit breaker, and the second end is connected to the corresponding output interface. Each of the connecting terminals is passed through the base so that the base is located between the first end and the second end, and the second end is located in the accommodating space. The at least one bus is configured on the backplane and is located between the backplane and the second end.

16. The power distribution system according to claim 4, characterized in that: The frame further includes a plurality of support members, which are supported between the back plate and the base, and each of the support members is located between two adjacent switch modules.

17. The power distribution system according to claim 16, characterized in that Each of the support members is an I-shaped structure.

18. The power distribution system according to claim 4, characterized in that: The at least one bus includes a first phase bus and a second phase bus, and the frame further includes at least one insulating column, which is supported between the back plate and the base and blocked between the first phase bus and the second phase bus.

19. The power distribution system according to claim 3, characterized in that: Each of the switch modules is suitable for being independently disassembled and separated from the other switch modules, the circuit breakers and the frame.

20. The power distribution system according to claim 1, wherein: The switch modules are coupled to each other via a daisy chain topology.

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