A kind of energy storage grid-connected low voltage point of entry is used quick terminal

Abstract

This utility model provides a quick-connect terminal block for low-voltage grid-connected energy storage, belonging to the field of terminal block technology. It includes a terminal frame, a first clearance hole, a copper busbar, and a locking stud. The terminal frame has a wiring space for placing the copper busbar, and one side of the terminal frame has an inlet / outlet gap for the copper busbar to enter and exit the wiring space. The copper busbar is slidably disposed within the terminal frame. A locking stud is threadedly connected to the opposite side of the inlet / outlet gap on the terminal frame. By rotating the locking stud, it abuts against and pushes the copper busbar towards the copper busbar, causing the copper busbar to contact and abut against the terminal frame. This utility model provides a quick-connect terminal block for low-voltage grid-connected energy storage, which can significantly shorten wiring operation time and improve operation efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of terminal block technology, and more specifically, it relates to a quick-connect terminal block for low-voltage grid connection points of energy storage. Background Technology

[0002] Currently, all external connection points of energy storage cabinets are equipped with busbars. During grid connection operations of energy storage cabinets, the access terminals of the wires used to connect to the busbars are all equipped with terminal blocks. Please refer to [the relevant documentation] for actual operation procedures. Figure 1 This traditional wiring method requires drilling holes in the busbars 200 and wiring busbars 100 of the energy storage cabinet, and then fixing them together with connecting bolts 300 to complete the wiring. This method has several drawbacks: First, drilling equipment must be carried during the operation, increasing the complexity of construction and equipment costs; second, drilling can cause irreversible damage to the busbars and wiring busbars, affecting their mechanical strength and electrical performance; third, the drilling and bolt installation steps are cumbersome, resulting in long operation times and a large workload, which in turn significantly extends the power outage time, reducing construction efficiency and increasing economic losses and inconvenience caused by prolonged power outages. Utility Model Content

[0003] The purpose of this utility model is to provide a quick-connect terminal block for low-voltage grid connection of energy storage, which aims to solve the problems existing in the wiring method of the current energy storage cabinet and meet the needs of efficient and reliable connection of energy storage system.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a quick-connect terminal block for low-voltage grid connection of energy storage, comprising:

[0005] A junction box includes a first vertical plate, a first horizontal plate, and a second horizontal plate. The first horizontal plate and the second horizontal plate are respectively connected to the upper and lower ends of the first vertical plate. The second vertical plate is connected downward to the first horizontal plate, and the third vertical plate is connected upward to the second horizontal plate. The second vertical plate and the third vertical plate are located on the same side of the first vertical plate and are in the same longitudinal plane. The first vertical plate, the first horizontal plate, the second horizontal plate, the second vertical plate, and the third vertical plate form a wiring space. There is an inlet and outlet gap between the second vertical plate and the third vertical plate for the busbar copper to be discharged into the wiring space.

[0006] The first clearance hole is disposed vertically through the second horizontal plate and extends along the line connecting the first vertical plate and the third vertical plate on the second horizontal plate.

[0007] A copper busbar is inserted into the first clearance hole. The upper end of the copper busbar extends upward into the wiring space, and the lower end of the copper busbar extends downward below the second horizontal plate for connecting wires.

[0008] A locking stud is threaded through and connected to the first longitudinal plate laterally. One end of the locking stud is located in the wiring space. The busbar enters the wiring space through the inlet / outlet gap. The locking stud rotates, abuts against and pushes the busbar toward the third longitudinal plate, so that the busbar contacts and abuts the busbar against the second and / or third longitudinal plates.

[0009] In one possible implementation, the upper end of the copper busbar is provided with an anti-detachment section, which is located above the second horizontal plate. The lateral width of the anti-detachment section is greater than the lateral width of the first clearance hole, in order to restrict the copper busbar from moving downward.

[0010] In one possible implementation, the width of the inlet / outlet gap is smaller than the lateral width of the busbar.

[0011] In one possible implementation, one end of the locking stud is provided with an anti-disengagement block, which is located inside the wiring space and is used to limit the range of movement of the locking stud to the outside of the first longitudinal plate.

[0012] In one possible implementation, the first vertical plate, the first horizontal plate, the second horizontal plate, the second vertical plate, and the third vertical plate are integrally formed.

[0013] In one possible implementation, the third longitudinal plate is hinged to the second transverse plate, and the wiring frame is provided with a limiting member for restricting the rotational position of the third longitudinal plate.

[0014] In one possible implementation, the limiting member is a limiting bolt, the head of which is located outside the third longitudinal plate, and the shank of which is threaded through the middle of the third longitudinal plate and connected to the first longitudinal plate. The limiting bolt is connected to the first longitudinal plate to restrict the third longitudinal plate from rotating outward. When the limiting bolt is disengaged from the first longitudinal plate, the third longitudinal plate can rotate outward away from the second longitudinal plate to increase the inlet / outlet gap.

[0015] In one possible implementation, the copper busbar is provided with a third clearance hole corresponding to the limiting bolt, and the limiting bolt is connected to the first longitudinal plate through the third clearance hole.

[0016] In one possible implementation, the shank of the limiting bolt includes a threaded section and a smooth section, the diameter of the smooth section being larger than that of the threaded section, the wiring busbar slidingly passing through the smooth section, and the threaded section being used for threaded connection to the first longitudinal plate.

[0017] In one possible implementation, the first horizontal plate is provided with a second clearance hole, which is provided vertically and extends along the line connecting the first vertical plate and the second vertical plate on the first horizontal plate. The upper end of the wiring copper busbar passes through the second clearance hole upward and extends to the upper end of the first horizontal plate. The upper end of the wiring copper busbar is provided with an anti-detachment section, which is located above the first horizontal plate. The width of the anti-detachment section is greater than the width of the second clearance hole, and the anti-detachment section is used to restrict the downward movement of the wiring copper busbar.

[0018] The beneficial effects of the quick-connect terminal block for low-voltage grid-connected energy storage provided by this utility model are as follows: Compared with the prior art, the quick-connect terminal block for low-voltage grid-connected energy storage provides advantages in construction. It eliminates the need for traditional drilling operations, requiring no drilling equipment, simplifying the construction process, and reducing equipment costs and construction complexity. In terms of protecting the copper busbar performance, it avoids irreversible damage to the busbar and wiring copper busbar, maintaining their mechanical strength and electrical performance, ensuring stable current transmission, and extending the service life of the copper busbar. In terms of efficiency and economy, traditional wiring steps are cumbersome and time-consuming, while this terminal block allows wiring to be completed simply by inserting and rotating the locking stud, significantly shortening operation time, reducing on-site power outage time, and minimizing economic losses and inconvenience caused by power outages. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a diagram showing the connection structure between the wiring copper busbar and the busbar in the prior art.

[0021] Figure 2 A three-dimensional structural schematic diagram of a quick-connect terminal block for a low-voltage grid-connected energy storage junction point provided in the first embodiment of this utility model;

[0022] Figure 3 for Figure 2 A schematic diagram of the longitudinal sectional structure;

[0023] Figure 4A schematic diagram illustrating the connection process between a quick-connect terminal block and a busbar for an energy storage grid-connected low-voltage inlet point, as provided in the first embodiment of this utility model.

[0024] Figure 5 A schematic diagram of the connection structure between a quick-connect terminal block and a busbar for an energy storage grid-connected low-voltage inlet point provided in the first embodiment of this utility model;

[0025] Figure 6 for Figure 5 Top view of the structure;

[0026] Figure 7 A three-dimensional structural schematic diagram of a quick-connect terminal block for a low-voltage grid-connected energy storage junction point provided for the second embodiment of this utility model;

[0027] Figure 8 for Figure 7 A schematic diagram of the longitudinal sectional structure;

[0028] Figure 9 A schematic diagram of the connection structure between a quick-connect terminal block and a busbar for an energy storage grid-connected low-voltage inlet point, provided for the second embodiment of this utility model;

[0029] Figure 10 for Figure 9 Top view of the structure.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Terminal block; 11. First longitudinal plate; 12. First transverse plate; 13. Second transverse plate; 14. Second longitudinal plate; 15. Third longitudinal plate; 2. First clearance hole; 3. Locking stud; 31. Anti-detachment block; 4. Inlet / outlet gap; 5. Second clearance hole; 6. Limit bolt; 61. Smooth section; 62. Threaded section; 7. Third clearance hole; 100. Terminal busbar; 101. Anti-detachment section; 200. Busbar; 300. Connecting bolt. Detailed Implementation

[0032] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0033] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0034] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] Please see Figures 2 to 6The present invention will now describe a quick-connect terminal for a low-voltage grid connection point for energy storage. The aforementioned quick-connect terminal block for low-voltage grid-connected energy storage includes a terminal frame 1, a first clearance hole 2, a busbar 100, and a locking stud 3. The terminal frame 1 includes a first vertical plate 11, a first horizontal plate 12, and a second horizontal plate 13. The first horizontal plate 12 and the second horizontal plate 13 are respectively connected to the upper and lower ends of the first vertical plate 11. In this embodiment, the first vertical plate 11 and the second vertical plate 14 have the same length. The second vertical plate 14 is connected downwards at the end of the first horizontal plate 12 away from the first vertical plate 11, and a third vertical plate 15 is connected upwards at the end of the second horizontal plate 13 away from the first vertical plate 11. The second vertical plate 14 and the third vertical plate 15 are located on the same side of the first vertical plate 11 and are in the same longitudinal plane. The first vertical plate 11, the first horizontal plate 12, the second horizontal plate 13, the second vertical plate 14, and the third vertical plate 15 form a wiring space. The second vertical plate 14 and the third vertical plate 15 have an entry / exit gap 4 for the busbar 200 to enter and exit the wiring space. A first clearance hole 2 is vertically disposed on the second horizontal plate 13 and extends along the line connecting the first vertical plate 11 and the third vertical plate 15. In this embodiment, the length direction of the first clearance hole 2 is the same as the line connecting the first vertical plate 11 and the third vertical plate 15, and the length of the first clearance hole 2 is approximately equal to the distance between the first vertical plate 11 and the third vertical plate 15. A copper busbar 100 passes through the first clearance hole 2, with its upper end extending upward into the wiring space and its lower end extending downward below the second horizontal plate 13 for connecting wires. The locking stud 3 extends laterally and is threaded onto the first longitudinal plate 11. One end of the locking stud 3 is located within the connection space. The busbar 200 enters the wiring space through the inlet / outlet gap 4. By rotating the locking stud 3, it can be moved toward the second longitudinal plate 14 and the third longitudinal plate 15, abutting against and pushing the busbar 100 toward the third longitudinal plate 15, so that the busbar 100 contacts and abuts the busbar 200 against the second longitudinal plate 14 and / or the third longitudinal plate 15.

[0037] In some embodiments, the junction box 1 can be obtained by bending a steel plate. That is, the first vertical plate 11, the first horizontal plate 12, the second horizontal plate 13, the second vertical plate 14, and the third vertical plate 15 can be integrally formed. The integrally formed junction box 1 has a C-shaped structure. Through the inlet and outlet gap 4 between the second vertical plate 14 and the third vertical plate 15 on the junction box 1, the junction box 1 can be hung on the busbar 200 of the energy storage cabinet during the wiring process.

[0038] In practical applications, the width of the busbar 200 on the energy storage cabinet is approximately 60mm. To prevent the busbar 200 from detaching from the inlet / outlet gap 4 after connection, and to ensure that the busbar 200 can simultaneously abut against the second vertical plate 14 and the third vertical plate 15, in this embodiment, the height of the second vertical plate 14 is set between 10mm and 12mm, and the aforementioned inlet / outlet gap 4 is set between 35mm and 40mm, making the inlet / outlet gap 4 smaller than the width of the busbar 200. For installation and connection, please refer to... Figures 4 to 5 By tilting the terminal block 1, the busbar 200 can be inserted into the wiring space of the terminal block 1. Then, the terminal block 1 can be straightened so that the first horizontal plate 12 rests on the busbar 200. Then, the wiring busbar 100 can be connected to the busbar 200. This allows the upper end of the busbar 200 to abut against the second vertical plate 14 and the lower end of the busbar 200 to abut against the third vertical plate 15, providing support at both the upper and lower ends of the busbar 200 and improving connection stability.

[0039] This utility model provides a quick-connect terminal block for low-voltage grid-connected energy storage. Compared with existing technologies, in terms of construction, it eliminates the need for traditional drilling operations, simplifies the construction process, and reduces equipment costs and construction complexity by eliminating the need for drilling equipment. Regarding the protection of copper busbar performance, it avoids irreversible damage to the busbar 200 and the wiring busbar 100, maintaining their mechanical strength and electrical performance, ensuring stable current transmission, and extending the service life of the copper busbars. In terms of efficiency and economy, traditional wiring steps are cumbersome and time-consuming, while this terminal block allows wiring to be completed simply by inserting and rotating the locking stud 3, significantly shortening operation time, reducing on-site power outage time, and minimizing economic losses and inconvenience caused by power outages.

[0040] In some embodiments, please refer to Figure 2 An anti-detachment section 101 is provided at the upper end of the copper busbar 100. The anti-detachment section 101 is located above the second horizontal plate 13. The lateral width of the anti-detachment section 101 is greater than the lateral width of the first clearance hole 2. After the copper busbar 100 passes through the first clearance hole 2, the anti-detachment section 101, with its wider lateral width, forms a blocking relationship with the second horizontal plate 13. When the copper busbar 100 is subjected to external force and tends to move downward, the second horizontal plate 13 will abut against the wider side of the anti-detachment section 101, thereby restricting the downward movement of the copper busbar 100. This ensures that the copper busbar 100 always maintains a stable position within the wiring space, preventing it from being removed from the correct wiring position due to accidental external force, and providing additional protection for the reliable connection between the busbar 200 and the copper busbar 100.

[0041] In some embodiments, please refer to Figures 2 to 3An anti-detachment block 31 is provided at one end of the locking stud 3. The anti-detachment block 31 is located inside the wiring space. In this embodiment, the anti-detachment block 31 is a circular pad installed at the end of the locking stud 3. The circular pad and the locking stud 3 form an integral structure. The circular pad is used to contact the wiring copper busbar 100. The diameter of the circular pad is larger than the diameter of the locking stud 3. When the locking stud 3 is rotated to move outward of the first longitudinal plate 11, the circular pad will be restricted by the inner sidewall of the first longitudinal plate 11, which will prevent the locking stud 3 from moving. This ensures that the locking stud 3 will not move excessively outward of the first longitudinal plate 11 during normal operation, and avoids the situation where the locking stud 3 is loosened from the first longitudinal plate 11 or removed from the normal working position.

[0042] In some embodiments, please refer to Figures 7 to 10 The third vertical plate 15 and the second horizontal plate 13 are connected by a hinge, allowing the third vertical plate 15 to rotate around the hinge point. The terminal frame 1 is equipped with a limiting component to restrict the rotation position of the third vertical plate 15. Specifically, the limiting component is a limiting bolt 6, the head of which is located on the outside of the third vertical plate 15, serving as a blocking function. When the limiting bolt 6 is tightly connected to the first vertical plate 11, it restricts the third vertical plate 15 from rotating outward. At this time, the structure of the terminal frame 1 is stable, and the inlet / outlet gap 4 between the second vertical plate 14 and the third vertical plate 15 remains at a normal size, meeting the access requirements of conventional busbars 200. When it is necessary to connect a larger busbar 200 or perform special operations, simply loosen the limiting bolt 6 to disengage it from the first vertical plate 11. The third vertical plate 15 then loses its restriction and can rotate outward, thereby moving away from the second vertical plate 14, effectively increasing the inlet / outlet gap 4 and providing access space for busbars 200 of different specifications.

[0043] In this embodiment, please refer to Figures 7 to 10 A third clearance hole 7 is provided on the copper busbar 100 corresponding to the limiting bolt 6. The purpose is to allow the limiting bolt 6 to pass through the third clearance hole 7 and connect with the first longitudinal plate 11. In this embodiment, the shank of the limiting bolt 6 includes a threaded section 62 and a smooth section 61. The diameter of the smooth section 61 is larger than that of the threaded section 62. The copper busbar 100 slides through the smooth section 61, which allows the copper busbar 100 to move relative to the smooth section 61. This ensures that the copper busbar 100 and the third longitudinal plate 15 and the second longitudinal plate 14 can be tightly abutted by the locking stud 3. The threaded section 62 is used to connect with the first longitudinal plate 11 by thread, so as to fix the limiting bolt 6 on the terminal frame 1. When the position of the third longitudinal plate 15 needs to be adjusted, the limit bolt 6 is turned. Since the wiring copper busbar 100 and the smooth section 61 are in sliding fit, the normal working state of the wiring copper busbar 100 will not be affected. At the same time, the limit bolt 6 can be smoothly connected or separated from the first longitudinal plate 11, ensuring the smoothness of the entire structure adjustment.

[0044] In this embodiment, please refer to Figures 7 to 10 A second clearance hole 5 is provided on the first horizontal plate 12. The second clearance hole 5 passes through the first horizontal plate 12 vertically and extends along the line connecting the first vertical plate 11 and the second vertical plate 14 on the first horizontal plate 12. The upper end of the wiring copper busbar 100 passes through the second clearance hole 5 upward and extends to the upper end of the first horizontal plate 12. The upper end of the wiring copper busbar 100 is provided with an anti-detachment section 101. The anti-detachment section 101 is located above the first horizontal plate 12 and its width is greater than the width of the second clearance hole 5. Once the copper busbar 100 is installed in place, the anti-detachment section 101 and the first horizontal plate 12 form a blocking structure. Due to the width difference, the first horizontal plate 12 can prevent the anti-detachment section 101 from moving downward, thereby limiting the overall downward displacement of the copper busbar 100 and ensuring that the copper busbar 100 is stably maintained in the predetermined position. At the same time, in this embodiment, the first clearance hole 2, the second clearance hole 5, and the limiting bolt 6 all limit the sliding direction of the copper busbar 100, so that the copper busbar 100 can remain stable during the sliding process.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fast terminal for energy storage grid-tie low voltage point of interconnection, characterized in that, include: A junction box (1) includes a first vertical plate (11), a first horizontal plate (12), and a second horizontal plate (13). The first horizontal plate (12) and the second horizontal plate (13) are respectively connected to the upper and lower ends of the first vertical plate (11). A second vertical plate (14) is connected downward on the first horizontal plate (12), and a third vertical plate (15) is connected upward on the second horizontal plate (13). The second vertical plate (14) and the third vertical plate (15) are located on the same side of the first vertical plate (11) and are in the same longitudinal plane. The first vertical plate (11), the first horizontal plate (12), the second horizontal plate (13), the second vertical plate (14), and the third vertical plate (15) form a wiring space. The second vertical plate (14) and the third vertical plate (15) have an entry and exit gap (4) for the busbar (200) to enter and exit the wiring space. The first clearance hole (2) is disposed vertically on the second horizontal plate (13) and extends along the line connecting the first vertical plate (11) and the third vertical plate (15) on the second horizontal plate (13). A copper busbar (100) is inserted into the first clearance hole (2). The upper end of the copper busbar (100) extends upward into the wiring space, and the lower end of the copper busbar (100) extends downward below the second horizontal plate (13) for connecting wires. A locking stud (3) is threaded through and connected to the first longitudinal plate (11) laterally. One end of the locking stud (3) is located in the wiring space. The busbar (200) enters the wiring space through the inlet / outlet gap (4). The locking stud (3) rotates, abuts against and pushes the busbar (100) toward the third longitudinal plate (15) so that the busbar (100) contacts and abuts the busbar (200) against the second longitudinal plate (14) and / or the third longitudinal plate (15).

2. A fast terminal for energy storage grid-tie low voltage point of interconnection according to claim 1, characterized in that, The upper end of the copper busbar (100) is provided with an anti-detachment section (101). The anti-detachment section (101) is located above the second horizontal plate (13). The lateral width of the anti-detachment section (101) is greater than the lateral width of the first clearance hole (2), which is used to restrict the copper busbar (100) from moving downward.

3. A fast terminal for energy storage grid-tie low voltage point of interconnection according to claim 1, characterized in that, The width of the inlet / outlet gap (4) is smaller than the lateral width of the busbar (200).

4. A fast terminal for energy storage grid-tie low voltage point of interconnection according to claim 1, characterized in that, One end of the locking stud (3) is provided with an anti-detachment block (31), which is located inside the wiring space. The anti-detachment block (31) is used to limit the range of movement of the locking stud (3) to the outside of the first longitudinal plate (11).

5. A fast terminal for energy storage grid-tie low voltage point of interconnection according to claim 1, characterized in that, The first vertical plate (11), the first horizontal plate (12), the second horizontal plate (13), the second vertical plate (14), and the third vertical plate (15) are integrally formed.

6. A fast terminal for energy storage grid-tie low voltage point of interconnection according to claim 1, characterized in that, The third longitudinal plate (15) is hinged to the second transverse plate (13), and the wiring frame (1) is provided with a limiting member for restricting the rotation position of the third longitudinal plate (15).

7. A fast terminal for energy storage grid-tie low voltage point of interconnection according to claim 6, characterized in that, The limiting component is a limiting bolt (6). The head of the limiting bolt (6) is located on the outside of the third longitudinal plate (15). The shank of the limiting bolt (6) passes through the middle of the third longitudinal plate (15) and is threaded onto the first longitudinal plate (11). The limiting bolt (6) is connected to the first longitudinal plate (11) to restrict the third longitudinal plate (15) from rotating outward. When the limiting bolt (6) is disengaged from the first longitudinal plate (11), the third longitudinal plate (15) can rotate outward away from the second longitudinal plate (14) to increase the inlet / outlet gap (4).

8. A fast terminal for energy storage grid-tie low voltage point of interconnection according to claim 7, characterized in that, The wiring copper busbar (100) is provided with a third clearance hole (7) corresponding to the limiting bolt (6), and the limiting bolt (6) is connected to the first longitudinal plate (11) through the third clearance hole (7).

9. A fast terminal for energy storage grid-tie low voltage point of interconnection according to claim 8, characterized in that, The shank of the limiting bolt (6) includes a threaded section (62) and a smooth section (61). The diameter of the smooth section (61) is larger than that of the threaded section (62). The copper busbar (100) is slidably passed through the smooth section (61). The threaded section (62) is used to thread the first longitudinal plate (11).

10. A fast terminal for energy storage grid-tie low voltage point of interconnection according to claim 9, characterized in that, The first horizontal plate (12) is provided with a second clearance hole (5), which is provided vertically and extends along the line connecting the first vertical plate (11) and the second vertical plate (14) on the first horizontal plate (12). The upper end of the wiring copper busbar (100) passes through the second clearance hole (5) and extends to the upper end of the first horizontal plate (12). The upper end of the wiring copper busbar (100) is provided with an anti-detachment section (101), which is located above the first horizontal plate (12). The width of the anti-detachment section (101) is greater than the width of the second clearance hole (5). The anti-detachment section (101) is used to restrict the downward movement of the wiring copper busbar (100).

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