Electrical bus system

Abstract

An electro-optic element includes: a first substrate; a second substrate generally parallel to the first substrate; a first bus having a first bus segment and a second bus segment, the first bus segment being disposed on an inner surface of the first substrate and extending along a first portion of a periphery of the first substrate, and the second bus segment being disposed on an inner surface of the first substrate and extending along a second portion of a periphery of the first substrate. The second bus segment is spaced apart from the first bus segment. The second bus has a third bus segment and a fourth bus segment disposed on the second substrate, each bus segment extending along a portion of a periphery of the second substrate. A controller is configured to selectively electrically communicate with the first bus and the second bus and independently control the voltage applied to each of the bus segments.

Description

[0001] Cross-reference of related applications

[0002] This application claims the benefit and priority of U.S. Provisional Patent Application No. 63 / 210,163, entitled “Electrical Bus System,” filed on June 14, 2021. Technical Field

[0003] This disclosure relates generally to bus systems, and more particularly to segmented bus systems for electro-optical devices. Background Technology

[0004] Achieving sufficient dimming and brightening speeds and uniformity in large-area installations, such as windows and skylights, including electro-optical elements, can be challenging. Electrical bus design helps achieve fast and uniform dimming speeds. Thicker buses can increase speed, but this can cause problems with the electro-optical elements. Current bus arrangements can result in very slow transitions, be very difficult to apply properly, and may cause performance issues in some configurations.

[0005] Due to the combined thickness of the buses, buses facing each other may require thicker cell spacing than desired. Even in configurations without buses facing each other, buses may cross each other at least at some point, resulting in thickness interference.

[0006] Another challenge may arise when using flexible substrates, such as plastic substrates, for electro-optic components. It may be difficult to adhere the bus to the plastic surface without causing stress and / or cupping. This is especially true for buses that extend around curved edges and / or corners.

[0007] Using conductive strips as buses on the straight sections of electro-optic devices may be desirable, but applying conductive strips around corners generates considerable forces on the substrate. Furthermore, ripples and folds may exist in the strip at corners, potentially leading to stress. The strip may not conform well to the desired positioning and may pull off the substrate or even cause substrate peeling and cupping, resulting in an uneven substrate.

[0008] In configurations using a combination of monolithic bus and seals, it can be difficult to accurately position the bus and seals and hold them in place during the construction of the electro-optical device. Furthermore, manufacturing the monolithic bus assembly can be expensive because the bus can be cut from a single piece of material, discarding the internal portions of that material. Summary of the Invention

[0009] According to one aspect, an electro-optic element may include: a first substrate having an inner surface; a second substrate having an inner surface opposite to the inner surface of the first substrate, the second substrate being generally parallel to and extending with the first substrate; a first bus having a first bus segment and a second bus segment, the first bus segment being disposed on the inner surface of the first substrate and extending along a first portion of the periphery of the first substrate, the second bus segment being disposed on the inner surface of the first substrate and extending along a second portion of the periphery of the first substrate; a second bus having a third bus segment and a fourth bus segment, the third bus segment being disposed on the inner surface of the second substrate and extending along a first portion of the periphery of the second substrate and adjacent to the first bus segment of the first bus, the fourth bus segment being disposed on the inner surface of the second substrate and extending along a second portion of the periphery of the second substrate and adjacent to the second bus segment of the first bus; and a controller configured to selectively electrically communicate with the first bus and the second bus, and capable of independently controlling the voltages applied to the first bus segment and the second bus segment of the first bus and the voltages applied to the third bus segment and the fourth bus segment of the second bus.

[0010] The second bus segment may be spaced apart from the first bus segment of the first bus, and the fourth bus segment may be spaced apart from the third bus segment of the second bus. The first and third bus segments may be straight. The second and fourth bus segments may be curved. The third bus segment may be arranged substantially parallel to the first bus segment, and the fourth bus segment may be arranged substantially parallel to the second bus segment. Electrically insulating material may be disposed between the first and second bus segments of the first bus and their corresponding third and fourth bus segments of the second bus to electrically isolate the first and second bus segments from the third and fourth bus segments. The end of the first bus segment may be angled, and the angled end may abut against the end of the second bus segment, thereby increasing the interface with the second bus segment. A finger may extend from one end of the first bus segment and may be configured to engage within an opening in the end of the second bus segment.

[0011] According to another aspect, an electrical bus system for an electro-optic element may include: a first bus segment and a second bus segment disposed on the surface of a first substrate of the electro-optic element, each bus segment having a first end and a second end; and a third bus segment and a fourth bus segment disposed on the surface of a second substrate of the electro-optic element, each bus segment having a first end and a second end, the surface of the second substrate being opposite to the surface of the first substrate, the second substrate extending substantially co-located with and parallel to the first substrate of the electro-optic element; wherein the first bus segment and the second bus segment may be disposed around at least a portion of the periphery of the surface of the first substrate; and wherein the third bus segment and the fourth bus segment may be disposed around at least a portion of the periphery of the surface of the second substrate.

[0012] The second end of the first bus segment may be adjacent to the first end of the second bus segment. At least the first bus segment and the third bus segment may be straight. At least the second bus segment and the fourth bus segment may be curved. The third bus segment may be disposed substantially parallel to and opposite to the first bus segment, and the fourth bus segment may be disposed substantially parallel to and opposite to the second bus segment. The third bus segment has substantially the same configuration as the first bus segment, and the fourth bus segment has substantially the same configuration as the second bus segment. According to the electrical bus system of claim 8, an electrically insulating material is disposed between the first bus segment and the third bus segment, and between the second bus segment and the fourth bus segment, to electrically isolate the first and second bus segments from the third and fourth bus segments. Attached Figure Description

[0013] Figure 1A A cross-sectional side view of a first embodiment of an electro-optic element having a bus according to the present disclosure is shown;

[0014] Figure 1B A cross-sectional side view of a second embodiment of an electro-optic element having a bus according to the present disclosure is shown;

[0015] Figure 2A An embodiment of a first bus arrangement on a substrate of an electro-optical element according to the present disclosure is shown;

[0016] Figure 2B An embodiment of a second bus arrangement on a substrate of an electro-optic element according to the present disclosure is shown;

[0017] Figure 3 An embodiment of a third bus arrangement on a substrate of an electro-optic element according to the present disclosure is shown;

[0018] Figure 4 An embodiment of a fourth bus arrangement on a substrate of an electro-optic element according to the present disclosure is shown;

[0019] Figure 5 A top view is shown of an embodiment of a bus arrangement on an electro-optical element according to the present disclosure;

[0020] Figure 6A A first configuration is shown in which two bus segments according to this disclosure are placed relative to each other;

[0021] Figure 6B A second configuration is shown in which two bus segments according to this disclosure are placed relative to each other;

[0022] Figure 6C A third configuration is shown in which two bus segments according to this disclosure are placed relative to each other; and

[0023] Figure 6D A fourth configuration is shown in which two bus segments according to this disclosure are placed relative to each other. Detailed Implementation

[0024] Buses used in large-area devices may require equal and balanced anode and cathode performance to achieve the desired performance. To further ensure desired performance characteristics, such as sufficient darkening and brightening speeds and solution phase balance of the electro-optic medium, the presence of two electrode sections is desirable.

[0025] refer to Figure 1A and 1B A large-area device may include an electro-optic element, generally shown as 10. The electro-optic element 10 may include a first substrate 20 defining a cavity 28 therebetween and an opposing second substrate 24. An electro-optic dielectric 32 may be disposed within the cavity 28 between the first substrate 20 and the second substrate 24. The first substrate 20 may have a first outer surface 20A and a second inner surface 20B, and the second substrate 24 may have a third inner surface 24A and a fourth outer surface 24B. The first and second substrates 20, 24 may be spaced apart and generally parallel to each other and extend together. One or more conductive coatings 36 may be disposed on the second surface 20A of the first substrate 20 and may serve as a first electrode of the electro-optic element 10. Similarly, one or more conductive coatings 40 may be disposed on the third surface 24A of the second substrate 24 and may serve as a second electrode of the electro-optic element 10. When a voltage is applied to the electro-optic dielectric 32 through the electrode coatings 36, 40, the electro-optic dielectric 32 may be able to change its properties, becoming darker or brighter from a dark state.

[0026] The first bus 44 may be disposed on the second surface 20A of the first substrate 20, generally along at least a portion of the periphery 48 of the first substrate 20; and the second bus 52 may be disposed on the third surface 24A of the second substrate 24, generally along at least a portion of the periphery 56 of the second substrate 24. The first bus 44 may contact a portion of the first electrode 36, and the second bus 52 may contact a portion of the second electrode 40.

[0027] like Figure 1A As shown, the first bus 44 can be arranged in a "stacked" configuration opposite the second bus 52. An electrically insulating material 60 can be disposed between the first bus 44 and the second bus 52 to prevent the first and second buses 44, 52 from contacting each other and short-circuiting the electro-optic element 10. In some embodiments, the electro-optic element 10 can be laminated. On the laminated electro-optic element 10, the gap between the first bus 44 and the second bus 52 can be filled before lamination. Filling the gaps can also address unevenness within the laminated stack. This arrangement can produce a relatively thick electro-optic element 10, wherein the first substrate and the second substrates 20, 24 are spaced far enough apart to accommodate the first bus 44, the second bus 52, and the electrically insulating material 60.

[0028] like Figure 1B As shown, in some embodiments, the second bus 52 may extend close to the first bus 44. In this arrangement, the first bus and the second buses 44, 52 are arranged substantially side by side. This arrangement can allow for a larger distance than the reference bus. Figure 1A The device is described as thinner because the space between the first and second substrates 20, 24 can be less than the combined thickness of the first bus and the second bus 44, 52. In this arrangement, the gap between the first bus 44 and the second bus 52 can be filled with material to eliminate any air gaps and prevent air from reaching the electro-optic medium 32.

[0029] The controller 64 can be configured to be selectively electrically connected to the first bus and the second bus 44, 52. The controller 64 can be configured to independently control a first voltage applied to the first bus 44 and a second voltage applied to the second bus 52. Applying the first voltage and / or the second voltage to the bus can darken or brighten the electro-optic element 10 by coloring or brightening the electro-optic medium 32, thereby controlling the amount of light passing through the electro-optic element 10.

[0030] Both the first bus 44 and the second bus 52 may include non-contiguous buses having multiple discrete bus segments 68. The bus segments 68 may be in balanced pairs, with each bus segment 68 of the first bus 44 corresponding to a bus segment 68 in the second bus 52. Each pair of bus segments 68 may be in a balanced anode and cathode configuration, where one bus segment 68 in the pair is anode and the other bus segment 68 in the pair is cathode. At least one pair of bus segments 68 in a pair of buses 44, 52 may include external contact wires or external contact portions 76. The wires or external contact portions 76 of the bus segment 68 may extend beyond the edges of the substrates 20, 24 to allow external electrical connections to the bus.

[0031] Each bus segment 68 may be configured to extend along a portion of the periphery 48, 56 of the first substrate or the second substrate 20, 24. In some embodiments, the periphery 48, 56 of the first substrate and / or the second substrate 20, 24 may include one or more generally straight segments. The straight bus segment 68 may extend along a generally straight portion of the periphery 48, 56 of the first substrate and the second substrate 20, 24. In some embodiments, such as Figure 2A As shown, the straight bus segment 68 may be disposed along a generally straight portion of the periphery 48, 56 of the first and second substrates 20, 24 to extend around all sides of the substrates 20, 24. In some embodiments, such as Figure 2B As shown, bus segments 68 may be provided only along some sections of the periphery 48, 56 of the first and second substrates 20, 24. In either case, bus segments 68 may be independently powered, short-circuited, or powered with opposite polarity to produce unique darkening / sharpening effects.

[0032] In some embodiments, the straight bus segment 68 may include a conductive strip. The strip may include a metal portion and a conductive (in the Z direction) pressure-sensitive strip. Using multiple bus segments 68 that include straight bus segments 68 containing strips can result in less waste compared to using a single piece of material for the first and second buses 44, 52.

[0033] In some embodiments, bus segment 68 may need to be adapted to non-geometric shapes, such as arcs, angles, etc. Figure 3-5 As shown, the electro-optic element 10 may have one or more curved portions of the peripheries 48, 56. A straight bus segment 68 may be disposed along the straight portion of the peripheries 48, 56. Additionally, as... Figure 3As shown, multiple straight bus segments 68 may be arranged along one or more bends in the periphery 48, 56. The straight bus segments 68 arranged along the bends in the periphery 48, 56 may be short enough to remain close to the periphery 48, 56 and not extend far enough from the center of the electro-optic element 10 to be visible to a viewer. The number of bus segments 68 selected may involve a balance between the number of straight bus segments 68 to segment the bends in the periphery 48, 56 with straight segments without degrading performance due to resistance buildup caused by multiple gaps. As in the previous example, at least one straight bus segment 68 may include an external contact portion 76 extending beyond the edge of the substrate to allow external electrical connections to the bus.

[0034] like Figure 4 As shown, in some embodiments, the first and second buses 44, 52 may include multiple bus segments 68 (some straight, some curved) disposed around the peripheries 48, 56 of the opposing surfaces of the first and second substrates 20, 24 to provide desired coverage. Curved bus segments, straight bus segments, or combinations of curved and straight bus segments 68 may be disposed along the curved portions of the peripheries 48, 56 of the first and second substrates 20, 24 of the electro-optic element 10. The curved bus segments 68 may be used on curves that are more curved or have a smaller radius than the straight bus portions. The curved bus segments 68 may be pre-formed to conform to the curved portions of the peripheries 48, 56 of the first and / or second substrates 20, 24. The pre-formed curved bus segments 68 may then be applied to the substrate. During manufacturing, the bus segments 68 can be placed onto the substrate after other layers (such as electrodes 36, 40) have been applied and cured, thereby simplifying manufacturing.

[0035] In some embodiments, the first bus and the second bus 44, 52 (not shown) may consist only of the curved bus segment 68.

[0036] The use of bus segments 68, including straight bus segments 68 and / or bent bus segments 68, can reduce or eliminate stress and / or strain on the underlying substrates 20, 24. In particular, when using plastic substrates, the use of bus segments 68 can reduce or prevent cupping of the substrates 20, 24. It can also allow for higher performance of the electro-optical element 10.

[0037] like Figure 5As shown, in some embodiments, the first bus 44 and the second bus 52 may be configured to be substantially parallel to each other along the length of the peripheries 48, 56 of the first and second substrates 20, 24 of the electro-optic element 10. One bus 44, 52 or a bus segment 68 from one bus may be closer to the periphery 48, 56 than the other bus 52, 44 or a bus segment 68 from the other bus. Both buses may have at least one external contact portion 76 extending beyond the edges of the substrates 20, 24 to allow external electrical connections to the buses. One of the first bus and the second bus 44, 52 may include an anode, and the other bus 44, 52 may include a cathode.

[0038] Now for reference Figures 6A-6D Each bus segment 68 may have a first end 68A and a second end 68B. The first end 68A of one bus segment 68 may be adjacent to the second end 68B of another bus segment 68. In some embodiments, a gap may separate the first end 68A of one bus segment 68 from the second end 68B of another bus segment 68, such that the ends 68A and 68B of the bus segments 68 do not contact each other, as shown below. Figure 6A As shown in the diagram. In this configuration, due to the space between the ends 68A and 68B of the bus segment 68, there may be significant resistance between the two bus segments 68.

[0039] In some embodiments, such as Figure 6B As shown, a first end 68A of one bus segment 68 may contact a second end 68B of another bus segment. The first and second bus segments 68 may contact only at one or more corners of the bus segments 68. Therefore, although both the first and second bus segments 68 can be disposed on the substrate and in contact with each other, they are not in a stacked configuration; a portion of one bus segment 68 is on top of a portion of another bus segment 68, but lies flat on the substrates 20, 24. This arrangement allows for a thinner electro-optic element 10, but can still have a higher resistance than desired due to the limited contact between the bus segments 68.

[0040] In some embodiments, to reduce the resistance between bus segments 68, at least one end of the bus segments 68 that are positioned end-to-end may be angled, and the first bus segment 68 and the second bus segment 68 may contact each other along all or part of the length of the ends of the bus segments 68. Figure 6CAs shown, the second end 68B of the first bus segment 68 is angled, while the first end 68A of the second bus segment 68 is not angled. However, both the second end 68B and the first end 68A of the first bus segment 68 can be angled, and this is still within the scope of this disclosure. Angled ends can increase the interface between the second end 68B and the first end 68A of the first bus segment 68, while still keeping the two bus segments 68 on the same plane rather than stacking them. This can reduce the resistance between the first and second bus segments 68 without affecting the required cell spacing.

[0041] In another embodiment, such as Figure 6D As shown, in order to further increase the interface between the first bus segment and the second bus segment 68, a finger or other protrusion 80 may extend from the first end 68A of the first bus segment 68 and may fit into the opening 84 defined by the second end 68B of the second bus segment 68.

[0042] The above description is considered to be a description of preferred embodiments only. Modifications to this disclosure will be apparent to those skilled in the art and to those who have made or used this disclosure. Therefore, it should be understood that the embodiments shown in the drawings and described above are for illustrative purposes only and are not intended to limit the scope of this disclosure, which is defined by the appended claims as interpreted under patent law including the principle of equivalence. Although only a few embodiments of the invention have been described in detail in this disclosure, those skilled in the art to which this disclosure pertains will readily appreciate that many modifications (e.g., variations in the size, dimensions, structure, shape and proportion, parameter values, mounting arrangements, use of materials, color, orientation, etc.) of various elements are possible without substantially departing from the novel teachings and advantages of the subject matter. For example, an element shown as integrally formed may be constructed from multiple parts, or elements shown as multiple parts may be integrally formed; the operation of the interface may be reversed or otherwise altered; the length or width of the structure and / or components or connectors or other elements of the system may be changed; the nature or number of adjustments between elements may be changed. Therefore, all such modifications are intended to be included within the scope of this invention. Other substitutions, modifications, alterations, and omissions may be made in the design, operating conditions, and arrangement of the intended and other exemplary embodiments without departing from the spirit of this innovation.

[0043] In this document, relational terms such as first and second, top and bottom, front and back, left and right, vertical, horizontal, etc., are used only to distinguish one entity or action from another, and do not necessarily require or imply any actual such relationship, order, or number of such entities or actions. These terms are not intended to limit the elements they describe, as individual elements may be oriented differently in different applications. However, it should be understood that devices may take various orientations and sequences of steps unless expressly specified otherwise. It should also be understood that the specific devices and processes shown in the accompanying drawings and described in the description below are merely exemplary embodiments of the inventive concept as defined in the appended claims. Therefore, unless expressly stated otherwise in the claims, specific dimensions and other physical characteristics relating to the embodiments disclosed herein should not be considered limiting.

[0044] It should be understood that any described process or step within a described process may be combined with other disclosed processes or steps to form a structure within the scope of this disclosure. The exemplary processes disclosed herein are for illustrative purposes and should not be construed as limiting. It should also be understood that variations and modifications may be made to the methods described above without departing from the concept of this disclosure, and that such concepts are intended to be covered by the appended claims unless the wording of those claims expressly states otherwise.

[0045] As used herein, when used in a list of two or more items, the term "and / or" means that any one of the listed items can be used alone, or any combination of two or more of the listed items can be used. For example, if a composition is described as containing components A, B, and / or C, then the composition may contain: A only; B only; C only; a combination of A and B; a combination of A and C; a combination of B and C; or a combination of A, B, and C.

[0046] As used herein, the term "about" means that a quantity, dimension, formulation, parameter, and other quantity and characteristic is not exact and need not be exact, but may be approximate and / or larger or smaller as needed, reflecting tolerances, conversion factors, rounding, measurement errors, and other factors known to those skilled in the art. When the term "about" is used to describe a range value or endpoint, this disclosure is to be understood to include the specific value or endpoint mentioned. Regardless of whether the numerical value or endpoint of a range in the specification refers to "about," the numerical value or endpoint of a range is intended to include two embodiments: one modified by "about" and one not modified by "about." It should be further understood that each endpoint of a range is meaningful relative to and independent of the other endpoint.

[0047] As used herein, the terms “substantially,” “basically,” and variations thereof are intended to indicate that the described feature is equal to or approximately equal to a value or description. For example, a “substantially flat” surface is intended to mean a flat or substantially flat surface. Furthermore, “substantially” is intended to mean that two values ​​are equal or approximately equal. In some embodiments, “substantially” may mean a value within at least one of 2%, 5%, and 10% of each other.

Claims

1. An electro-optical element, comprising: A first substrate having an inner surface; The second substrate has an inner surface opposite to the inner surface of the first substrate, and the second substrate is generally parallel to the first substrate and extends together with the first substrate; A first bus, the first bus having a first bus segment and a second bus segment, the first bus segment being disposed on the inner surface of the first substrate and extending along a first portion of the periphery of the first substrate, the second bus segment being disposed on the inner surface of the first substrate and extending along a second portion of the periphery of the first substrate. The second bus has a third bus segment and a fourth bus segment, the third bus segment being disposed on the inner surface of the second substrate and extending along a first portion of the periphery of the second substrate, and the fourth bus segment being disposed on the inner surface of the second substrate and extending along a second portion of the periphery of the second substrate. A controller configured to be selectively electrically connected to the first bus and the second bus, and capable of independently controlling the voltages applied to the first bus segments and the second bus segments of the first bus, as well as the voltages applied to the third bus segments and the fourth bus segments of the second bus; The first bus segment and the second bus segment of the first bus correspond to the third bus segment and the fourth bus segment of the second bus. Each pair of bus segments is in a balanced anode and cathode form, wherein one bus segment in the pair is anode and the other bus segment in the pair is cathode. The third bus segment is adjacent to and substantially parallel to the first bus segment, and the fourth bus segment is adjacent to and substantially parallel to the second bus segment. The first and second bus segments of the first bus are closer to the periphery than the third and fourth bus segments of the second bus. as well as At least one pair of bus segments of the first bus and the second bus includes external contact portions that extend beyond the edges of the first substrate and the second substrate to allow external electrical connections of the first bus and the second bus.

2. The electro-optical element according to claim 1, wherein the second bus segment is spaced apart from the first bus segment of the first bus, and the fourth bus segment is spaced apart from the third bus segment of the second bus.

3. The electro-optical element according to claim 1, wherein the first bus segment and the third bus segment are straight.

4. The electro-optical element according to claim 3, wherein the second bus segment and the fourth bus segment are curved.

5. The electro-optical element according to claim 1, wherein an electrically insulating material is disposed between the first bus segment and the second bus segment of the first bus and the corresponding third bus segment and the fourth bus segment of the second bus, electrically isolating the first bus segment and the second bus segment from the third bus segment and the fourth bus segment.

6. The electro-optic element according to claim 1, wherein the end of the first bus segment is angled, and the angled end is disposed close to the end of the second bus segment to increase the interface with the end of the second bus segment.

7. The electro-optic element of claim 1, wherein the finger extends from a first end of the first bus segment and is configured to engage within an opening in the first end of the second bus segment.

8. An electrical bus system for electro-optical components, comprising: A first bus segment and a second bus segment are disposed on the inner surface of the first substrate of the electro-optic element, each bus segment having a first end and a second end; as well as The third and fourth bus segments of the second bus are disposed on the inner surface of the second substrate of the electro-optic element. Each bus segment has a first end and a second end. The inner surface of the second substrate is opposite to the inner surface of the first substrate. The second substrate extends substantially together with and parallel to the first substrate of the electro-optic element. The first bus segment and the second bus segment are disposed around at least a portion of the periphery of the inner surface of the first substrate; The third bus segment and the fourth bus segment are disposed around at least a portion of the periphery of the inner surface of the second substrate. The first bus segment and the second bus segment of the first bus correspond to the third bus segment and the fourth bus segment of the second bus. Each pair of bus segments is in a balanced anode and cathode form, wherein one bus segment in the pair is anode and the other bus segment in the pair is cathode. The third bus segment is adjacent to and substantially parallel to the first bus segment, and the fourth bus segment is adjacent to and substantially parallel to the second bus segment. The first and second bus segments of the first bus are closer to the periphery than the third and fourth bus segments of the second bus. as well as At least one pair of bus segments of the first bus and the second bus includes external contact portions that extend beyond the edges of the first substrate and the second substrate to allow external electrical connections of the first bus and the second bus.

9. The electrical bus system of claim 8, wherein the second end of the first bus segment is adjacent to the first end of the second bus segment.

10. The electrical bus system of claim 8, wherein at least the first bus segment and the third bus segment are straight.

11. The electrical bus system of claim 8, wherein at least the second bus segment and the fourth bus segment are curved.

12. The electrical bus system of claim 8, wherein the third bus segment is disposed opposite to the first bus segment, and The fourth bus segment is positioned opposite to the second bus segment.

13. The electrical bus system of claim 8, wherein the third bus segment has a configuration substantially the same as the first bus segment, and the fourth bus segment has a configuration substantially the same as the second bus segment.

14. The electrical bus system of claim 8, wherein an electrically insulating material is disposed between the first bus segment and the third bus segment and between the second bus segment and the fourth bus segment to electrically isolate the first bus segment and the second bus segment from the third bus segment and the fourth bus segment.

Images