Energy storage connector

Abstract

The invention belongs to the technical field of electric connection devices, and particularly relates to an energy storage connector which comprises a flange plate and further comprises a female head insulation column arranged on one side of the flange plate, and a male head insulation column arranged on the other side of the flange plate. The male head insulation sleeve is arranged on the outer side of the female head insulation column in a sleeving mode, two symmetrical fan-shaped protrusions are integrally formed on the outer side wall of the female head insulation column, two symmetrical inner protrusions are integrally formed on the inner wall of the male head insulation sleeve, and the two inner protrusions are both arranged between the two fan-shaped protrusions. The two fan-shaped protrusions and the two inner protrusions are jointly provided with a movable electric connection assembly. Through a rotary plugging mode, the capability of the energy storage connector for bearing axial tensile force is effectively improved, stable connection and convenient use are ensured, the heat dissipation capability of a conductive connection part can be enhanced, the stability of electric energy transmission is ensured, and meanwhile, a single-pole or double-pole connector can be flexibly manufactured according to requirements to adapt to diversified circuit transmission requirements.

Description

Technical Field

[0001] The present invention belongs to the technical field of electrical connection devices, and particularly relates to an energy storage connector. Background Art

[0002] Under the background of the rapid development of new energy, energy storage systems have become the key to stable power supply. As a core component of energy storage systems, energy storage connectors are widely used in scenarios such as battery pack connection and interaction between batteries and inverters, undertaking the functions of electric energy transmission and distribution.

[0003] Currently, energy storage connectors are essential electrical connection devices in energy storage systems, which can achieve rapid connection of cables, terminals, etc. For example, an energy storage connector disclosed in the patent publication number CN116315885A; in the connector structure disclosed in the above patent, most existing energy storage connectors connect the male head and the female head through a plug-and-play structure. Since the connector is vulnerable to axial tension during use, in order to prevent the male head and the female head of the connector from loosening, anti-loosening structures or locking structures need to be added during the design of the connector. However, when bearing axial tension for a long time, the pressure borne by the anti-loosening structure or the locking structure is relatively large, and it is prone to damage. At the same time, the anti-loosening structure or the locking structure generally requires secondary operation, that is, after insertion, the anti-loosening structure or the locking structure needs to be operated to perform secondary fixation on the connector, increasing the complexity of use. Summary of the Invention

[0004] The purpose of the present invention is to address the above problems and provide an energy storage connector.

[0005] To achieve the above object, the present invention adopts the following technical solutions: An energy storage connector includes a flange, and further includes: A female head insulating column provided on one side of the flange; A male head insulating sleeve sleeved on the outside of the female head insulating column. Two symmetric sector-shaped protrusions are integrally formed on the outer side wall of the female head insulating column. Two symmetric inner protrusions are integrally formed on the inner wall of the male head insulating sleeve, and both of the two inner protrusions are disposed between the two sector-shaped protrusions. An active electrical connection component is jointly installed by the two sector-shaped protrusions and the two inner protrusions; A female head terminal assembly installed on the side wall of the flange; A male head terminal assembly installed on the side wall of the male head insulating sleeve.

[0006] Preferably, the movable electrical connection component includes arc-shaped conductive columns fixedly installed on the opposite side walls of the two inner protrusions. Plug-in slots matching the corresponding inner protrusions are formed on the side walls of the two sector-shaped protrusions. U-shaped elastic conductive sheets are installed inside the two plug-in slots. A plurality of elastic contact parts are integrally bent on the side wall of the U-shaped elastic conductive sheet. After the arc-shaped conductive column rotates and moves into the plug-in slot, the U-shaped elastic conductive sheet contacts the side wall of the arc-shaped conductive column through the elastic contact parts.

[0007] Preferably, the female terminal component includes a first connection insulating column integrally formed at the end of the female insulating column, and the first connection insulating column penetrates the side wall of the flange. A first female connection terminal is installed at one end of the first connection insulating column away from the female insulating column. A conductive rod and two conductive strips are fixedly inserted inside the female insulating column. The side walls of the two conductive strips on the opposite sides are electrically connected to the ends of the corresponding U-shaped elastic conductive sheets. The conductive rod is electrically connected to the two conductive strips and is also electrically connected to the first female connection terminal.

[0008] Preferably, the male terminal component includes two second connection insulating columns fixedly installed on the side wall of the male insulating sleeve. The second connection insulating columns and the side wall of the inner protrusion on the same side are jointly inserted with a first bent conductive column. An insulating plate is jointly installed at one end of the two second connection insulating columns away from the male insulating sleeve. A first male connection terminal is installed at the center of the side wall of the insulating plate. The first male connection terminal is electrically connected to the two first bent conductive columns.

[0009] Preferably, two arc-shaped heat-conducting cotton blocks are fixedly installed on the outer side wall of the female insulating column, and the side walls of the two arc-shaped heat-conducting cotton blocks are in contact with the inner wall of the male insulating sleeve. A plurality of heat-conducting rods are fixedly inserted into the side wall of the male insulating sleeve, and an arc-shaped heat-radiating plate is fixedly installed at the ends of the heat-conducting rods on the same side. The arc-shaped heat-radiating plate is arranged outside the male insulating sleeve.

[0010] Preferably, two symmetrical threaded parts are fixedly installed on the outside of the female insulating column, and the inner walls of the two inner protrusions are threadedly connected to the threaded parts on the same side.

[0011] Preferably, the female terminal component includes two third connection insulating columns integrally formed at the end of the female insulating column, and the two third connection insulating columns penetrate the side wall of the flange. Second female connection terminals are installed at one end of the two third connection insulating columns away from the female insulating column. Two conductive plates are fixedly inserted inside the female insulating column, and the two conductive plates are electrically connected to the ends of the corresponding U-shaped elastic conductive sheets. The two conductive plates are electrically connected to the corresponding second female connection terminals.

[0012] Preferably, the male terminal assembly includes two fourth connecting insulating columns fixedly installed on the side wall of the male insulating sleeve. The fourth connecting insulating columns and the side wall protruding inward on the same side are jointly and fixedly inserted with second bent conductive columns. One end of each of the two fourth connecting insulating columns away from the male insulating sleeve is fixedly connected with a second male wiring terminal, and the two second male wiring terminals are electrically connected to the second bent conductive columns on the same side.

[0013] Compared with the existing technology, an energy storage connector has the following advantages: 1. Through the mutual cooperation of the flange, female insulating column, male insulating sleeve, fan-shaped protrusion, inner protrusion and movable electrical connection assembly, the male and female connectors of the energy storage connector can be joined by means of rotational insertion, effectively improving its ability to withstand axial tensile force, not prone to axial displacement, ensuring the connection stability of the connector. With the threaded part provided, the connector can be stably fixed in one connection action, which is convenient and reliable to use.

[0014] 2. Through the female terminal assembly and male terminal assembly provided, the connection between the connector and external cables or terminals can be realized. Two arc-shaped conductive columns and a U-shaped elastic conductive sheet are used to connect the male and female connectors. This design has strong flexibility and can manufacture single-pole connectors or bipolar connectors according to production requirements, adapting to different circuit systems and meeting the diverse application scenarios of single-wire transmission or positive and negative double-wire transmission.

[0015] 3. Through the mutual cooperation of the arc-shaped heat-conducting cotton block, heat-conducting rod and arc-shaped heat-dissipating plate, the heat dissipation capacity at the connection between the arc-shaped conductive column and the U-shaped elastic conductive sheet can be increased, thereby avoiding the temperature accumulation at the electrical connection position of the male and female connectors from being too high and affecting the stability of power transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. 1 is a schematic structural diagram of Embodiment 1 of an energy storage connector provided by the present invention; Figure 2 FIG. 2 is a schematic structural diagram before the rotational insertion of the female insulating column and the male insulating sleeve of Embodiment 1 of an energy storage connector provided by the present invention; Figure 3 FIG. 3 is a schematic structural diagram of the female insulating column of Embodiment 1 of an energy storage connector provided by the present invention; Figure 4 FIG. 4 is a schematic structural diagram of the male insulating sleeve of Embodiment 1 of an energy storage connector provided by the present invention; Figure 5 FIG. 5 is a schematic structural diagram after the rotational insertion of the female insulating column and the male insulating sleeve of Embodiment 1 of an energy storage connector provided by the present invention; Figure 6It is a schematic structural diagram of the female terminal assembly and the male terminal assembly of Embodiment 1 of a energy storage connector provided by the present invention; Figure 7 It is a schematic structural diagram of Embodiment 2 of a energy storage connector provided by the present invention; Figure 8 It is a schematic structural diagram of the female terminal assembly and the male terminal assembly of Embodiment 2 of a energy storage connector provided by the present invention; Figure 9 It is a schematic structural diagram before the female insulating post and the male insulating sleeve of Embodiment 2 of a energy storage connector are rotationally inserted.

[0017] In the figure: 1 flange, 2 female insulating post, 3 male insulating sleeve, 4 fan-shaped protrusion, 5 inner protrusion, 6 movable electrical connection assembly, 61 arc-shaped conductive post, 62 insertion slot, 63 U-shaped elastic conductive sheet, 64 elastic contact part, 7 female terminal assembly, 71a first connection insulating post, 72a first female terminal, 73a conductive rod, 74a conductive strip, 71b third connection insulating post, 72b second female terminal, 73b conductive plate, 8 male terminal assembly, 81a second connection insulating post, 82a first bent conductive post, 83a insulating plate, 84a first male terminal, 81b fourth connection insulating post, 82b second bent conductive post, 83b second male terminal, 9 arc-shaped heat-conducting cotton block, 10 heat-conducting rod, 11 arc-shaped heat-dissipating plate, 12 threaded part. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0019] Embodiment 1: As Figures 1 - 6As shown, an energy storage connector includes a flange 1, and also includes: a female insulating column 2, the female insulating column 2 is arranged on one side of the flange 1, a male insulating sleeve 3 is sleeved on the outside of the female insulating column 2, the outer wall of the female insulating column 2 is integrally formed with two symmetrical fan-shaped protrusions 4, the inner wall of the male insulating sleeve 3 is integrally formed with two symmetrical inner protrusions 5, and the two inner protrusions 5 are both arranged between the two fan-shaped protrusions 4, the two fan-shaped protrusions 4 and the two inner protrusions 5 are jointly installed with a movable electrical connection component 6, and the movable electrical The connecting component 6 includes an arc-shaped conductive column 61 fixedly installed on the side wall on the opposite side of the two inner protrusions 5. The side walls of the two fan-shaped protrusions 4 are each provided with a plug-in slot 62 matching the corresponding inner protrusion 5, and a U-shaped elastic conductive sheet 63 is installed inside the two plug-in slots 62. The side wall of the U-shaped elastic conductive sheet 63 is integrally bent and provided with a plurality of elastic contact portions 64. After the arc-shaped conductive column 61 rotates and moves into the inside of the plug-in slot 62, the U-shaped elastic conductive sheet 63 contacts the side wall of the arc-shaped conductive column 61 through the elastic contact portion 64.

[0020] The female terminal assembly 7 is installed on the side wall of the flange 1, and the female terminal assembly 7 includes a first connecting insulating column 71a integrally formed at the end of the female insulating column 2, and the first connecting insulating column 71a passes through the side wall of the flange 1, and the first female terminal 72a is installed at the end of the first connecting insulating column 71a away from the female insulating column 2, and a conductive rod 73a and two conductive strips 74a are fixedly inserted inside the female insulating column 2, and the side walls on the opposite side of the two conductive strips 74a are electrically connected to the ends of the corresponding U-shaped elastic conductive sheets 63, the conductive rod 73a is electrically connected to the two conductive strips 74a, and the conductive rod 73a is electrically connected to the first female terminal 72a.

[0021] The male terminal assembly 8 is installed on the side wall of the male insulating sleeve 3. The male terminal assembly 8 includes two second connecting insulating columns 81a fixedly installed on the side wall of the male insulating sleeve 3. The second connecting insulating columns 81a and the side wall of the inner protrusion 5 on the same side are jointly plugged with a first curved conductive column 82a. The two second connecting insulating columns 81a are jointly installed with an insulating plate 83a at one end away from the male insulating sleeve 3, and a first male terminal 84a is installed at the center of the side wall of the insulating plate 83a. The first male terminal 84a is electrically connected to the two first curved conductive columns 82a.

[0022] Two arc-shaped heat-conducting cotton blocks 9 are fixedly installed on the outer wall of the female insulating column 2, and the side walls of the two arc-shaped heat-conducting cotton blocks 9 are in contact with the inner wall of the male insulating sleeve 3. A plurality of heat-conducting rods 10 are fixedly inserted into the side wall of the male insulating sleeve 3, and an arc-shaped heat sink 11 is fixedly installed on the rod ends of the plurality of heat-conducting rods 10 on the same side. The arc-shaped heat sink 11 is arranged on the outer side of the male insulating sleeve 3, which can increase the heat dissipation efficiency of the contact portion between the U-shaped elastic conductive sheet 63 and the arc-shaped conductive column 61.

[0023] On the outer side of the female head insulating column 2, two symmetrical threaded portions 12 are fixedly installed. The inner walls of the two inner protrusions 5 are both threadedly connected to the threaded portion 12 on the same side, which can ensure the connection stability between the female head insulating column 2 and the male head insulating sleeve 3.

[0024] The operating principle of the present invention is described as follows: Install the flange 1 at a suitable position on the equipment support of the energy storage system (threaded holes are provided on the flange 1 to facilitate its connection with the equipment support). Subsequently, the operator holds the male head insulating sleeve 3, sleeving it on the outer side of the female head insulating column 2, and making the inner protrusion 5 located between the sector protrusions 4 (refer to Figure 2 ), then the operator rotates the male head insulating sleeve 3. At this time, the male head insulating sleeve 3 will drive the two arc-shaped conductive columns 61 to rotate and move through the inner protrusion 5, so that the two arc-shaped conductive columns 61 are inserted into the corresponding insertion slots 62 and contact the corresponding U-shaped elastic conductive sheets 63 (refer to Figure 5 ). And during the rotation of the male head insulating sleeve 3, the inner walls of the two inner protrusions 5 will be threadedly engaged with the corresponding threaded portions 12. When the side walls of the two inner protrusions 5 abut against the side walls of the sector protrusions 4 on the same side, it means that the arc-shaped conductive column 61 contacts the elastic contact portion 64 on the side wall of the U-shaped elastic conductive sheet 63. At this time, the connection between the male head insulating sleeve 3 and the female head insulating column 2 is completed. Since only by rotating the male head insulating sleeve 3 by a certain angle, the connection of the connector can be completed, the installation is very convenient. Then connect the cable of the energy storage device to the first female head terminal 72a and the first male head terminal 84a, and the connection between the connector and the energy storage device can be completed. Since the arc-shaped conductive column 61 is inserted into the insertion slot 62, when the male head insulating sleeve 3 is subjected to an axial tensile force, due to the axial block of the insertion slot 62 on the arc-shaped conductive column 61, the arc-shaped conductive column 61 will not displace, so the stability of the arc-shaped conductive column 61 in the axial direction can be ensured. For the radial direction, since the inner protrusion 5 is threadedly engaged with the threaded portion 12, even if it is subjected to a radial tensile force, it is not easy for the inner protrusion 5 to be separated from the threaded portion 12, so the connection stability between the arc-shaped conductive column 61 and the U-shaped elastic conductive sheet 63 can be ensured (at the contact surface between the inner protrusion 5 and the sector protrusion 4, a sealing member such as a sealing ring is provided on the side wall of the sector protrusion 4, so as to improve the sealing performance in the insertion slot 62 after the arc-shaped conductive column 61 is inserted); After the male head insulating sleeve 3 and the female head insulating column 2 are connected, electric energy can be transmitted to the U-shaped elastic conductive sheet 63 through the first female head wiring terminal 72a, the conductive rod 73a, and the conductive strip 74a. Then, the U-shaped elastic conductive sheet 63 transmits the electric energy to the arc-shaped conductive column 61. Next, the electric energy is continuously output through the first bent conductive column 82a and the first male head wiring terminal 84a. When the electric energy is output, heat will be generated at the contact positions of each elastic contact part 64 between the arc-shaped conductive column 61 and the U-shaped elastic conductive sheet 63 (it is very difficult to achieve a completely ideal contact at the contact points of the connector. Even if the surface looks smooth, there are still unevenness microscopically, which makes the actual contact area much smaller than the apparent contact area. When the current passes through, contraction will occur at these contact points, resulting in an increase in resistance and heat generation. Moreover, as the use time increases, the surface of the contact points may be oxidized, corroded, or have impurities attached, further increasing the contact resistance and the heat generation). Since the arc-shaped conductive column 61 and the U-shaped elastic conductive sheet 63 are located at the outer edge of the female head insulating column 2, therefore, their heat will be quickly conducted to the arc-shaped heat-conducting cotton block 9, and the arc-shaped heat-conducting cotton block 9 will quickly conduct the heat to each heat-conducting rod 10 and the arc-shaped heat-dissipating plate 11. Thus, by increasing the heat-dissipating area of the female head insulating column 2, the heat generated when the arc-shaped conductive column 61 and the U-shaped elastic conductive sheet 63 work can be quickly dissipated, improving the stability of electric energy transmission and reducing losses; In this embodiment, since there is only one first female head wiring terminal 72a and one first male head wiring terminal 84a, it is suitable for the connection of a single electrode, such as the scenario of connecting multiple energy storage battery units.

[0025] Embodiment 2: As Figures 7 - 9 shown, the difference between this embodiment and Embodiment 1 is that: the female head terminal assembly 7 includes two third connection insulating columns 71b integrally formed at the end of the female head insulating column 2, and both of the two third connection insulating columns 71b penetrate through the side wall of the flange 1. At the end of each of the two third connection insulating columns 71b away from the female head insulating column 2, a second female head wiring terminal 72b is installed. Two conductive plates 73b are fixedly inserted into the interior of the female head insulating column 2, and both of the two conductive plates 73b are electrically connected to the end of the U-shaped elastic conductive sheet 63 on the same side. Both of the two conductive plates 73b are electrically connected to the corresponding second female head wiring terminal 72b.

[0026] The male head terminal assembly 8 includes two fourth connection insulating columns 81b fixedly installed on the side wall of the male head insulating sleeve 3. A second bent conductive column 82b is fixedly inserted through the side wall of the inner protrusion 5 on the same side with the fourth connection insulating column 81b. At the end of each of the two fourth connection insulating columns 81b away from the male head insulating sleeve 3, a second male head wiring terminal 83b is fixedly connected, and both of the two second male head wiring terminals 83b are electrically connected to the second bent conductive column 82b on the same side.

[0027] In this embodiment, during production, when injecting the insulating column 2 of the female head, two third connecting insulating columns 71b are injected synchronously, and conductive plates 73b are provided inside the third connecting insulating columns 71b and inside the insulating column 2 of the female head. Then, second female head wiring terminals 72b are installed at the ends of the two conductive plates 73b. At the same time, when manufacturing the male head, the insulating plate 83a is removed, and two second male head wiring terminals 83b are installed at the ends of the two second bent conductive columns 82b. At this time, the second female head wiring terminals 72b are separately connected to the U-shaped elastic conductive sheet 63, the arc-shaped conductive column 61, the second bent conductive column 82b, and the second male head wiring terminal 83b on the same side through the corresponding conductive plates 73b. Therefore, when wiring, the positive and negative wires can be respectively connected to the corresponding second female head wiring terminals 72b and second male head wiring terminals 83b, which is suitable for the connection of double electrodes. For example, in the scenario of supplying power to a certain device through an energy storage power supply, it can be flexibly produced according to requirements.

[0028] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An energy storage connector, comprising a flange (1), characterized in that: Also includes: A female insulating column (2) is arranged on one side of the flange (1); A male insulating sleeve (3) is sleeved on the outer side of the female insulating column (2); the outer side wall of the female insulating column (2) is integrally formed with two symmetrical fan-shaped protrusions (4); the inner side wall of the male insulating sleeve (3) is integrally formed with two symmetrical inner protrusions (5), and the two inner protrusions (5) are both arranged between the two fan-shaped protrusions (4); the two fan-shaped protrusions (4) and the two inner protrusions (5) are jointly equipped with a movable electrical connection component (6); A female terminal assembly (7) mounted on a side wall of the flange (1); A male terminal assembly (8) is mounted on a side wall of the male insulating sleeve (3).

2. An energy storage connector according to claim 1, characterized in that: The movable electrical connection assembly (6) comprises an arc-shaped conductive column (61) fixedly mounted on the side walls on the opposite sides of the two inner protrusions (5); the side walls of the two fan-shaped protrusions (4) are each provided with a plug-in slot (62) matching the corresponding inner protrusion (5); and a U-shaped elastic conductive sheet (63) is installed inside the two plug-in slots (62); the side wall of the U-shaped elastic conductive sheet (63) is integrally bent and provided with a plurality of elastic contact portions (64); after the arc-shaped conductive column (61) is rotated and moved into the plug-in slot (62), the U-shaped elastic conductive sheet (63) contacts the side wall of the arc-shaped conductive column (61) through the elastic contact portion (64).

3. An energy storage connector according to claim 1, characterized in that: The female terminal assembly (7) comprises a first connecting insulating column (71a) integrally formed and arranged at the end of the female insulating column (2), and the first connecting insulating column (71a) passes through the side wall of the flange (1), and a first female terminal (72a) is installed at one end of the first connecting insulating column (71a) away from the female insulating column (2), and a conductive rod (73a) and two conductive strips (74a) are fixedly inserted inside the female insulating column (2), and the side walls on the opposite sides of the two conductive strips (74a) are electrically connected to the ends of the corresponding U-shaped elastic conductive sheets (63), the conductive rod (73a) is electrically connected to the two conductive strips (74a), and the conductive rod (73a) is electrically connected to the first female terminal (72a).

4. An energy storage connector according to claim 1, characterized in that: The male terminal assembly (8) comprises two second connecting insulating columns (81a) fixedly mounted on the side wall of the male insulating sleeve (3); the second connecting insulating columns (81a) and the side wall of the inner protrusion (5) on the same side are jointly plugged with a first curved conductive column (82a); an insulating plate (83a) is jointly mounted on one end of the two second connecting insulating columns (81a) away from the male insulating sleeve (3); a first male terminal (84a) is mounted at the center of the side wall of the insulating plate (83a); and the first male terminal (84a) is electrically connected to the two first curved conductive columns (82a).

5. The energy storage connector according to claim 1, characterized in that: Two arc-shaped heat-conducting cotton blocks (9) are fixedly mounted on the outer wall of the female insulating column (2), and the side walls of the two arc-shaped heat-conducting cotton blocks (9) are in contact with the inner wall of the male insulating sleeve (3). A plurality of heat-conducting rods (10) are fixedly plugged into the side wall of the male insulating sleeve (3), and an arc-shaped heat-dissipating plate (11) is fixedly mounted on the rod ends of the plurality of heat-conducting rods (10) on the same side, and the arc-shaped heat-dissipating plate (11) is arranged on the outer side of the male insulating sleeve (3).

6. The energy storage connector according to claim 1, characterized in that: Two symmetrical threaded portions (12) are fixedly mounted on the outer side of the female insulating column (2), and the inner walls of the two inner protrusions (5) are both threadedly connected to the threaded portions (12) on the same side.

7. The energy storage connector according to claim 1, characterized in that: The female terminal assembly (7) comprises two third connecting insulating columns (71b) integrally formed and arranged at the end of the female insulating column (2), and the two third connecting insulating columns (71b) both penetrate the side wall of the flange (1), and the ends of the two third connecting insulating columns (71b) away from the female insulating column (2) are both installed with a second female terminal (72b), and the female insulating column (2) has two conductive plates (73b) fixedly inserted inside, and the two conductive plates (73b) are both electrically connected to the ends of the U-shaped elastic conductive sheet (63) on the same side, and the two conductive plates (73b) are both electrically connected to the corresponding second female terminal (72b).

8. The energy storage connector according to claim 1, characterized in that: The male terminal assembly (8) comprises two fourth connecting insulating columns (81b) fixedly mounted on the side wall of the male insulating sleeve (3); the fourth connecting insulating columns (81b) and the side wall of the inner protrusion (5) on the same side are fixedly plugged with a second curved conductive column (82b); one end of the two fourth connecting insulating columns (81b) away from the male insulating sleeve (3) is fixedly connected to a second male terminal (83b), and the two second male terminal blocks (83b) are electrically connected to the second curved conductive column (82b) on the same side.

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