Description:FIELD OF THE INVENTION
[001] The present invention relates to an interconnector. More specifically, the present invention relates to an interconnector design for connecting cell in an energy storage device.

BACKGROUND OF THE INVENTION
[002] Conventionally, multiple cells such as Lithium-ion or Nickel metal hydride cells are connected in series or parallel to obtain any desired voltage or current in a battery pack. An interconnector is used to connect the cells, which is configured to conduct electricity and the electricity is used for electrical power distribution in the vehicle. Battery cells are connected with interconnectors to make battery packs.
[003] Typically, the interconnectors that are connecting the cells are welded on both sides. This design becomes incompatible for single sided welding, and there is an increased chance of a short circuit occurring due to the accidental shorting of a positive terminal and a negative terminal of the cell.
[004] It is also known that conventional battery packs are assembled using bulky metal plates with complex features. These metal plates are used for interconnecting individual cells in a battery pack in order to carry current among these cells or terminals of the battery packs to desired location in a vehicle. These metal plates are frequently wired to the individual cells or soldered to the cells. Other techniques of connecting the metal plates to the cells of the battery pack are spot welding the metal plates or by bonding these metal plates with the cells using wires. Spot-welding technique has limitations as it is limited to material used. In addition, connection made by the bonded wires are fragile and are prone to break under stress and vibration that are typically encountered in the field, for example when the vehicle is moving.
[005] Currently battery packs use Nickel 201 as part of a composite, i.e., pure Nickel, which may be around 99.8% weight by weight (w/w) ratio of the total composite used. In these current battery packs, Nickel is used as the interconnector material for lithium-ion cells that is responsible to join or connect cells via dual side resistive spot welding. Disadvantages of using Nickel include the high cost associated with Nickel, which also has high resistance and results in cell imbalance issues. Further disadvantage of using Nickel includes relatively poor thermal management and heat dissipation because of the dual side welding with the interconnectors. A further disadvantage is the low tensile strength associated with Nickel compared to other conducting materials and finally a safety concern due to the Heat Affected Zone (HAZ) around the battery pack.
[006] Thus, there is a need in the art for a structure for connecting a cell in an energy storage device, which addresses at least the aforementioned problems.

SUMMARY OF THE INVENTION
[007] In one aspect, the present invention is directed towards a structure for connecting a cell in an energy storage device. The structure has a first unit and a second unit coupled to an interconnect, and preferably welded on the same side of the interconnect (also referred to as an interconnector). In a further aspect of the invention, the first unit has a fuse connecting the interconnect with a first terminal, and the first terminal is configured to connect with a positive terminal located on a top of a cell. In a further aspect of the invention, the second unit also has a fuse connecting the interconnect with a second terminal, and the second terminal is configured to couple with a negative terminal located on a rim of the cell. An advantage of the current structure is that it facilitates single side welding of the first unit and the second unit to the cell and creates an organized and efficient arrangement of cells to be maintained in a parallel orientation within the energy storage device.
[008] In another embodiment of the invention, the interconnect has a conducting material or an alloy or a layered composite, and the conducting material has preferably at least one of Aluminium, Copper or Nickel and the alloy has a combination of Copper and Nickel in a predetermined ratio, and the layered composite has a first material coated with a second material, and in the layered composite the first material and the second material has Nickel or Copper.
[009] In another embodiment of the invention, the first terminal is arch shaped or D shaped or mushroom shaped and the second terminal is semi-circular shaped or C shaped. In another aspect of the invention, the fuse is configured to connect the first terminal to the interconnect and another fuse is configured to connect the second terminal to the interconnect. In another aspect of the invention, the advantage of the fuse connecting the first terminal and the second terminal to the interconnect is that there is safe passage of current enabled to the interconnect from the cell. In another aspect of the invention, the fuse has a metal sheet with a pre-defined cross-section, and the pre-determined cross-section being proportional to a current capacity of the interconnect. In another aspect of the invention, a cell is welded to the interconnect by at least one of a spot weld and a laser weld.
[010] In another aspect, the invention is related to an interconnect structure that has a plurality of structures as disclosed above. In another aspect of the invention, each of the plurality of structures is configured for connecting a plurality of cells. In a further aspect of the invention, each of the plurality of the interconnect structure has a first unit and a second unit coupled to an interconnect, and preferably welded on the same side of the interconnect (also referred to as an interconnector). In a further aspect of the invention, the first unit has a fuse connecting the interconnect with a first terminal, and the first terminal is configured to connect with a positive terminal located on a top of a cell. In a further aspect of the invention, the second unit also has a fuse connecting the interconnect with a second terminal, and the second terminal is configured to couple with a negative terminal located on a rim of the cell. An advantage of the current structure is that it facilitates single side welding of the first unit and the second unit to the cell and creates an organized and efficient arrangement of cells to be maintained in a parallel orientation within the energy storage device.
[011] In another embodiment of the invention, the interconnect has a conducting material or an alloy or a layered composite, and the conducting material has preferably at least one of Aluminium, Copper or Nickel and the alloy has a combination of Copper and Nickel in a predetermined ratio, and the layered composite has a first material coated with a second material, and in the layered composite the first material and the second material has Nickel or Copper.
[012] In another embodiment of the invention, the first terminal is arch shaped or D shaped or mushroom shaped and the second terminal is semi-circular shaped or C shaped. In another embodiment of the invention, the fuse is configured to connect the first terminal to the interconnect and another fuse is configured to connect the second terminal to the interconnect. In another embodiment of the invention, the advantage of the fuse connecting the first terminal and the second terminal to the interconnect is that there is safe passage of current enabled to the interconnect from the cell. In another aspect of the invention, the fuse has a metal sheet with a pre-defined cross-section, and the pre-determined cross-section being proportional to a current capacity of the interconnect. In another aspect of the invention, a cell is welded to the interconnect by at least one of a spot weld and a laser weld. In a further aspect of the invention, each of the plurality of cells being arranged in parallel and in the same orientation.
[013] A further aspect of the invention relates to an energy storage device and the energy storage device has a casing, the casing being configured to accommodate one or more modules, the one or more modules has a interconnect structures, and each of the plurality of interconnect structures has a plurality of structures as disclosed above. In another aspect of the invention, each of the plurality of structures is configured for connecting a plurality of cells. In a further aspect of the invention, each of the plurality of the interconnect structure has a first unit and a second unit coupled to an interconnect, and preferably welded on the same side of the interconnect (also referred to as an interconnector). In a further aspect of the invention, the first unit has a fuse connecting the interconnect with a first terminal, and the first terminal is configured to connect with a positive terminal located on a top of a cell. In a further aspect of the invention, the second unit also has a fuse connecting the interconnect with a second terminal, and the second terminal is configured to couple with a negative terminal located on a rim of the cell. An advantage of the current structure is that it facilitates single side welding of the first unit and the second unit to the cell and creates an organized and efficient arrangement of cells to be maintained in a parallel orientation within the energy storage device.
[014] In another embodiment of the invention, the interconnect has a conducting material or an alloy or a layered composite, and the conducting Material has preferably at least one of Aluminium, Copper or Nickel and the alloy has a combination of Copper and Nickel in a predetermined ratio, and the layered composite has a first material coated with a second material, and in the layered composite the first material and the second material has Nickel or Copper.
[015] In another aspect of the invention, the first terminal is arch shaped or D shaped or mushroom shaped and the second terminal is semi-circular shaped or C shaped. In another aspect of the invention, the fuse is configured to connect the first terminal to the interconnect and another fuse is configured to connect the second terminal to the interconnect. In another aspect of the invention, the advantage of the fuse connecting the first terminal and the second terminal to the interconnect is that there is safe passage of current enabled to the interconnect from the cell. In another aspect of the invention, the fuse has a metal sheet with a pre-defined cross-section, and the pre-determined cross-section being proportional to a current capacity of the interconnect. In another aspect of the invention, a cell is welded to the interconnect by at least one of a spot weld and a laser weld. In a further aspect of the invention, each of the plurality of cells being arranged in parallel and in the same orientation.
[016] In another aspect of the invention, an automobile has the energy storage as disclosed above.

BRIEF DESCRIPTION OF THE DRAWINGS
[017] Reference will be made to embodiments of the invention, examples of which may be illustrated in accompanying figures. These figures are intended to be illustrative, not limiting. Although the invention is generally described in context of these embodiments, it should be understood that it is not intended to limit the scope of the invention to these particular embodiments.
Figure 1 illustrates an exemplary embodiment of a structure illustrating a first unit and a second unit coupled to a cell, in accordance with the present invention.
Figure 2A illustrates an exemplary embodiment of a positive terminal of the structure as illustrated in Figure 1, in accordance with the present invention.
Figure 2B illustrates an exemplary embodiment of a negative terminal of the structure as illustrated in Figure 1, in accordance with the present invention.
Figure 3 illustrates an exemplary embodiment of a plurality of interconnector arranged such that the cells are connected in parallel and have the same orientation, in accordance with the present invention.
Figure 4 illustrates an exemplary embodiment of an energy storage device comprising a plurality of interconnectors forming the energy storage device and the cells are welded to a single side of the interconnect and are in parallel within the energy storage device, in accordance with the present invention.

DETAILED DESCRIPTION OF THE INVENTION
[018] The present invention relates to a battery pack (battery) comprising a plurality of cells connected to one another and arranged in an array via an interconnectors having a structure that allows for a single side welding of the positive and negative terminals of the plurality of cells.
[019] Figure 1 illustrates an exemplary embodiment of a structure 100 illustrating a first unit 120 and a second unit 130 coupled to a cell 105 in accordance with an embodiment of the invention. As illustrated in Figure 1, the structure 100 is provided for connecting a cell 105, which forms part of an energy storage device. As disclosed herein in relation to the present invention the cell 105 is considered to be cylindrical in nature, and the structure 100 illustrated is for connecting cylindrical cells 105 to an interconnect 110, and a plurality of cells 105 may be connected to the interconnect 110. The shape of the first unit 120 and the second unit 130 may depend on the shape of the cell 105 under consideration and it should be obvious to a person of ordinary skill in the art that different types of cells connected to the interconnect will have different type of structure 100.
[020] In an embodiment, the cell 105 is considered to be a cylindrical lithium-ion cell. Therefore, in accordance with the structure of the cell 105, the structure 100 has a first unit 200A (shown in Figure 2A) and a second unit 200B (shown in Figure 2B). The first unit 200A is coupled to an interconnect 110 and, the first unit 200A has a first terminal 120 and is connected to the interconnect 110 by means of a fuse 122. The first terminal 120 is configured to connect with a positive terminal 112 of the cell 105, and the positive terminal 112 is located on top of the cell 105.
[021] In an exemplary embodiment, the structure100 has a second unit 200B. The second unit 200B is coupled to an interconnect 110 and, the second unit 200B has a second terminal 130 and is connected to the interconnect 110 by means of a fuse 132. The second terminal 130 is configured to connect with a negative terminal 114 of the cell 105, and the negative terminal 114 is located on the rim of the cell 105.
[022] Both the first terminal 120 and the second terminal 130 are on the same side of the interconnect 110. The first terminal 120 is connected to the interconnect 110 by means of a fuse 122, and one end of the fuse 122 is connected to the first terminal 120 and the other end of the fuse 122 is connected to the interconnect 110. Similarly, the second terminal 130 is connected to the interconnect 110 by means of a fuse 132, and one end of the fuse 132 is connected to the second terminal 130 and the other end of the fuse 132 is connected to the interconnect 110.
[023] In an embodiment, the first terminal 120 is arch shaped or D shaped. In an embodiment, the second terminal 130 is semi-circular shaped or C shaped. In an embodiment, a cell 105 comprises the positive terminal 112 and the negative terminal 114. The positive terminal 112 of the cell 105, which is located on the top of the cell 105, is connected to the first terminal 120 of the structure 100. The negative terminal 114 of the cell 105, which is located on the rim of the cell 105, is connected to the second terminal 130. The cell 105 when powered ON can carry current or charge from the cell 105 to different parts of the vehicle via the interconnect 110 in the energy storage device. In Figure 1, the positive terminal 112 of the cell and the first terminal 120 are shown being separated and a double arrow alongside to indicate that the two are connected. For purpose of illustration these have been shown to be separated in Figure 1, but the cell 105 when connected to the interconnect 110, has the positive terminal 112 of the cell 105 connected to the first terminal 120 by means of a weld or wire or any other binding means that has conducting properties.
[024] In an embodiment, the interconnect 110 comprises a conducting material or an alloy or a layered composite. In another embodiment, the conducting material comprises at least one of Aluminium, Copper or Nickel or also include any other good conducting material. In an embodiment, the alloy comprises a combination of Copper and Nickel in a predetermined ratio or combine suitable materials that is used in combination that has good conducting properties, as the alloy must be a good conductor of electricity or charge carrier. In an embodiment, the layered composite is a first material coated with a second material, and the first material and the second material may comprise a combination of Nickel or Copper. In an embodiment, the interconnect comprises a Copper plate coated with Nickel or vice-versa.
[025] In an embodiment, the fuse 122, 132 is configured to connect the first terminal 120 of the interconnect 110 to the positive terminal 112 of the cell 105 and the second terminal 130 of the interconnect 110 to the negative terminal 114 of the cell 105 as described previously in order to enable safe passage of current to the interconnect 110 from the cell 105. In an embodiment, the fuse 122, 132 comprises a metal sheet or a metal wire with a pre-defined cross-section or a pre-defined thickness, and the pre-determined cross-section or pre-defined thickness is proportional to a current capacity of the interconnect 110. In an embodiment, the cell 105 is welded to the interconnect 110 by at least one of a spot weld and a laser weld. It should be obvious to a person of ordinary skill in the art that various other techniques may be used to weld the interconnect 110 to the positive terminal 112 and negative terminal 114 of the cell 105 and all such techniques fall within the scope of the present invention.
[026] In an embodiment, if the cell 105 is cylindrical in shape, the first terminal 120 may be D shaped and the second terminal 130 may be C shaped. In another embodiment, if the cell 105 is rectangular in shape, then the shape of the first terminal 120 and the second terminal 130 is suitably designed such that the first terminal 120 is connected to the positive terminal 112 of the cell and the second terminal 130 is connected to the negative terminal 114 of the cell 105, which is on the rim of the cell. It should be obvious to a person of ordinary skill in the art that various other shapes and sizes of the first terminal 120 and second terminal 130 may be formed depending on the shape of the cell 105 and all such shapes and sizes fall within the scope of the present invention.
[027] Figure 2A illustrates an embodiment of the first unit 200A of the structure 100 illustrated in Figure 1 in accordance with an embodiment of the invention. As illustrated in Figure 2A, the first terminal 220 is arch shaped or D shaped as the present invention considers a plurality of cylindrical Li-ions cells to be connected in the energy storage device. The first terminal 220 is connected to the positive terminal 112 of the cell 105 as disclosed previously, and the positive terminal 112 is on top of the cell 105. The first terminal 220 is made of a conducting material. The first terminal 220 is connected to an interconnector 110 by means of a fuse 222, and the fuse 222 is made of a conducting material or an alloy or a layered composite of conducting materials.
[028] Figure 2B illustrates an exemplary embodiment of the second unit 200B of the structure 100 illustrated in Figure 1 in accordance with an embodiment of the present invention. As illustrated in the Figure 2B, the second terminal 230 is semi-circular in shape or C shaped as the present invention considers a plurality of cylindrical Li-ions cells to be connected in the energy storage device. The second terminal 230 is connected to the negative terminal 114 of the cell 105 as disclosed previously, and the negative terminal 114 is on the rim of the cell 105. The second terminal 230 is made of a conducting material. The second terminal 230 is connected to an interconnector 110 by means of a fuse 232, and the fuse 232 is made of a conducting material or an alloy or a layered composite of conducting materials.
[029] Figure 3 illustrates an embodiment of a plurality of interconnectors arranged such that the cells are connected in parallel and have the same orientation in accordance with an embodiment of the present invention. As illustrated, an interconnect structure 310 comprises a plurality of structures 305, and the length of the interconnect structure 310 is pre-determined based on the size of the energy storage device. Each of the plurality of structures 305 is configured for connecting a plurality of cells 105. The interconnect structure 310 is arranged in parallel, such that the cells 105 when connected to the interconnect structure 310 are in parallel and have a uniform orientation.
[030] Each of the plurality of the interconnect structures 310 comprises a plurality of structures 305 (described previously in Figure 1), and each structure 310 comprises a plurality of first units 320 and a plurality of second units 330 coupled to the interconnect 310, and each structure 305 is connected to a single cell. A plurality of interconnect structures 310 connect cells in an energy storage device.
[031] Each of the structures 305 of the interconnect structure 310 comprises the first unit 320 and a second unit 330. The first unit 320 comprises a first terminal that is connected to the interconnect structure 310 by means of a fuse (not shown in the Figure but illustrated in Figure 1). The first terminal of the interconnect structure 310 is connected to a positive terminal of a cell, and the positive terminal of the cell located on a top of a cell (as described previously with respect to Figure 1).
[032] The second unit 330 comprises a second terminal that is connected to the interconnect structure 310 by means of a fuse (not shown in the Figure but illustrated in Figure 1). The second terminal of the interconnect structure 310 is connected to a negative terminal of a cell, and the negative terminal of the cell located on a rim of a cell (as described previously with respect to Figure 1).
[033] The interconnect structure 310 comprises a conducting material or an alloy or a layered composite (as described previously with respect to Figure 1). In an embodiment, the conducting material that forms the interconnect structure 310 comprises at least one of Aluminium, Copper or Nickel or any other conducting material, and the alloy comprises a combination of Copper and Nickel in a predetermined ratio or can be a combination of conducting material in a predetermined ratio and the layered composite comprises a first material coated with a second material, and the first material and the second material comprise Nickel or Copper.
[034] In an embodiment, the first terminal is arch shaped or D shaped and the second terminal is semi-circular shaped of C shaped. It should be obvious to a person of ordinary skill in the art the shape and size of the first terminal and the second terminal may vary depending on the type of cells used in the energy storage device. In the present invention, the cells are considered to be cylindrical in shape, with the positive terminal of the top of the cell (as illustrated in Figure 1) and the negative terminal of the cell on the rim of the cell (as illustrated in Figure 1).
[035] In an embodiment, the fuse 122, 132 connecting the first terminal to the interconnect and the second terminal to the interconnect 310 comprises a conducting material and is configured to enable safe passage of current to the interconnect structure 310 from the cell 105. In an embodiment, the fuse 122, 132 comprises a metal sheet or a metal wire with a predetermined cross-section and a predefined thickness, and the predetermined cross-section and the predefined thickness is proportional to a current capacity of the interconnect structure 310. In an embodiment, each of the structures 305 of the plurality of interconnect structures 310 are connected to a cell (not shown in the Figure), where the first terminal is connected to the positive terminal of the cell and the second terminal is connected to the negative terminal of the cell by means welding or other means of binding, comprises at least one of a spot weld and a laser weld. In an embodiment, the plurality of cells are arranged in parallel and in the same orientation as the interconnect structure 310 are arranged in parallel and the cells are welded to the interconnect structure 310 on a single side of the interconnect structure 310.
[036] Figure 4 illustrates an embodiment of an energy storage device 400 comprising a plurality of interconnects forming the energy storage device and the cells are welded to a single side of the interconnect and are in parallel within the energy storage device in accordance with an embodiment of the present invention.
[037] The energy storage device 400 comprises a casing 405, the casing being configured to accommodate one or more modules, the one or more modules comprises a interconnect structures 410, and each of the plurality of interconnect structures 410 comprising a plurality of structures 305 configured for connecting a plurality of cells 105 and each of the plurality of the interconnect structure 410 comprise a first unit 420 and a second unit 430 coupled to the interconnect structures 410. The plurality of interconnect structures 410 are arranged in parallel on the casing 405, where the casing 405 is provided with holders 440 that can hold the cells to ensure that the cells do not move. All other features of the interconnect structure 410 and the first unit 420 and the second unit 430 have been described previously with respect to Figure1, Figure 2A, Figure 2B and Figure 3, and hence will not be repeated here. The interconnect structure 410 is placed at the locations on the casing such that the cells are placed in the holders 440, and the plurality of cells are connected to the interconnect structure 410.
[038] All the positive terminals of the cells are connected to the first terminal of each structure, which can be connected to an interconnect bus 425 which form the positive terminal of the energy storage device. All the negative terminals of the cells are connected to the second terminal of each structure, which can be connected to an interconnect bus 435 which form the negative terminal of the energy storage device. In an exemplary embodiment, the energy storge device 400 has the plurality of cells being arranged in parallel and in the same orientation being placed in the cell holder.
[039] In an embodiment of the present invention, an end to end of the interconnectors all are in one line. In an embodiment of the present invention single side welding of the interconnect to the cells is advantageously performed. In an embodiment of the present invention, the interconnect design places the cells in one direction such that cell tops are all on one side. In an embodiment, in current energy storage devices, the fuse had to be placed in an alternate fashion, but with the current design the cells, interconnect and fuse can be placed in a single line. In an embodiment, the interconnectors are made of aluminium, nickel, and other alloys.
[040] In accordance with the embodiments of the present invention, the venting takes places only through the positive terminal and when all the cells face the same side then venting is easier since all the gases are being released from one side, therefore, the vent can be placed on the side from where the venting happens, and immediate release of gases can take place efficiently.
[041] In an advantageous embodiment of the present the energy storage device comprising an arrangement of plurality of cells, where all the cells are arranged in parallel to each other providing higher efficiency. In another advantageous embodiment, all cells in the energy storage device are arranged in the same orientation, which means that all the positive poles lie in a common plane thereby making the heat transfer and thermal management more efficient.
[042] In an advantageous embodiment, the interconnectors are designed in such a way that the interconnect structures have negative terminal connectors and positive terminal connectors distinguished in two different shapes for ease of assembly by the operators in the operation line thereby eliminating the chance of any error that may result in a short circuit of the energy storage device, and the current design may be applied to energy storage devices in general.
[043] While the present invention has been described with respect to certain embodiments, it will be apparent to those skilled in the art that various changes and modification may be made without departing from the scope of the invention as defined in the following claims.
, Claims:1. A structure (100) for connecting a cell (110) in an energy storage device (400), the structure (100) comprising:
a first unit (120) and a second unit (130) coupled to an interconnect (110) wherein,
the first unit (120) comprising a fuse (122) connecting the interconnect (110) with a first terminal (120), wherein the first terminal (120) is configured to connect with a positive terminal (112) located on a top of a cell (110); and
the second unit (130) comprising a fuse (132) connecting the interconnect (110) with a second terminal (130), wherein the second terminal (130) is configured to couple with a negative terminal (114) located on a rim of the cell (110).

2. The structure (100) as claimed in claim 1, wherein the interconnect (110) comprises a conducting material or an alloy or a layered composite.

3. The structure (100) as claimed in claim 2, wherein the conducting Material comprises at least one of Aluminium, Copper or Nickel,

4. The structure (100) as claimed in claim 2, wherein the alloy comprises a combination of Copper and Nickel in a predetermined ratio.

5. The structure (100) as claimed in claim 2, wherein the layered composite comprises a first material coated with a second material.

6. The structure (100) as claimed in claim 5, wherein the first material and the second material comprise Nickel or Copper.

7. The structure (100) as claimed in claim 1, wherein the first terminal (120) is arch shaped or D shaped.

8. The structure (100) as claimed in claim 1, wherein the second terminal (130) is semi-circular shaped or C shaped.

9. The structure (100) as claimed in claim 1, wherein the fuse (122, 132) is configured to connect the first terminal (120) and the second terminal (130) to the interconnect (110) to enable safe passage of current to the interconnect (110) from the cell (110).

10. The structure (100) as claimed in claim 9, where the fuse (122, 132) comprises a metal sheet with a pre-defined cross-section, wherein the pre-determined cross-section being proportional to a current capacity of the interconnect (110).

11. The structure (100) as claimed in claim 1, wherein a cell (110) is welded to the interconnect (110) by at least one of a spot weld and a laser weld.

12. An interconnect structure (310) comprising a plurality of structures (305) wherein each of the plurality of structures (305) is configured for connecting a plurality of cells (110) wherein each of the plurality of the interconnect structure (310) comprising:
a first unit (320) and a second unit (330) coupled to the interconnect (310) wherein,
the first unit (320) comprising a fuse (122) connecting the interconnect (310) with a first terminal (320), wherein the first terminal (320) is configured to connect with a positive terminal (112) located on a top of a cell (110); and
the second unit (330) comprising a fuse (132) connecting the interconnect (310) with a second terminal (330), wherein the second terminal (330) is configured to couple with a negative terminal (114) located on the rim of the cell (110).

13. The interconnect structure (310) as claimed in claim 12, wherein the interconnect structure (310) comprises a conducting material or an alloy or a layered composite.

14. The interconnect structure (310) as claimed in claim 13, wherein the conducting material comprises at least one of Aluminum, Copper or Nickel and the alloy comprises a combination of Copper and Nickel in a predetermined ratio and the layered composite comprises a first material coated with a second material, wherein the first material and the second material comprise Nickel or Copper.

15. The interconnect structure (310) as claimed in claim 12, wherein the first terminal (320) is arch shaped or D shaped and the second terminal (330) is semi-circular shaped of C shaped.

16. The interconnect structure (310) as claimed in claim 12, wherein the fuse (122, 132) connecting the first terminal (320) and the second terminal (330) to the interconnect (310) is configured to enable safe passage of current to the interconnect (110) from the cell (110).

17. The interconnect structure (310) as claimed in claim 16, where the fuse (122, 132) comprises a metal sheet with a pre-defined cross-section, wherein the pre-determined cross-section being proportional to a current capacity of the interconnect (110).

18. The interconnect structure (310) as claimed in claim 12, wherein a cell (110) is welded to the interconnect (110) by at least one of a spot weld and a laser weld.

19. The interconnect structure (310) as claimed in claim 12, wherein each of the plurality of cells (110) being arranged in parallel and in the same orientation.

20. An energy storage device (400), the energy storage device (400) comprising:
a casing (405), the casing being configured to accommodate one or more modules, the one or more modules comprises a interconnect structures (410), and each of the plurality of interconnect structures (410) comprising a plurality of structures (305) configured for connecting a plurality of cells (110) wherein each of the plurality of the interconnect structure (310) comprising:
a first unit (420) and a second unit (430) coupled to the interconnect (310) wherein,
the first unit (420) comprising a fuse (122) connecting the interconnect (410) with a first terminal (420), wherein the first terminal (420) is configured to connect with a positive terminal (112) located on a top of a cell (110); and
the second unit (430) comprising a fuse (432) connecting the interconnect (410) with a second terminal (430), wherein the second terminal (430) is configured to couple with a negative terminal (114) located on the rim of the cell (110).

21. The energy storage device (400) as claimed in claim 20, wherein the interconnect structure (410) comprises a conducting material or an alloy or a layered composite.

22. The energy storage device (400) as claimed in claim 21, wherein the conducting material comprises at least one of Aluminium, Copper or Nickel and the alloy comprises a combination of Copper and Nickel in a predetermined ratio and the layered composite comprises a first material coated with a second material, wherein the first material and the second material comprise Nickel or Copper.

23. The energy storge device (400) as claimed in claim 20, wherein the first terminal (420) is arch shaped or D shaped and the second terminal (430) is semi-circular shaped or C shaped.

24. The energy storge device (400) as claimed in claim 20, wherein the fuse (122, 132) connecting the first terminal (420) and the second terminal (430) to the interconnect (410) is configured to enable safe passage of current to the interconnect (110) from the cell (110).

25. The energy storge device (400) as claimed in claim 24, where the fuse (122, 132) comprises a metal sheet with a pre-defined cross-section, wherein the pre-determined cross-section being proportional to a current capacity of the interconnect (410).

26. The energy storge device (400) as claimed in claim 20, wherein a cell (110) is welded to the interconnect (410) by at least one of a spot weld and a laser weld.

27. The energy storge device (400) as claimed in claim 20, wherein each of the plurality of cells (110) being arranged in parallel and in a same orientation.