DESC:CELL ARRAY FOR BATTERY PACK
CROSS REFERENCE TO RELATED APPLICTIONS
The present application claims priority from Indian Provisional Patent Application No. 202221038184 filed on 02/07/2022, the entirety of which is incorporated herein by a reference.
TECHNICAL FIELD
The present disclosure relates to a cell array for a battery pack. Furthermore, the present disclosure relates to a battery pack with an improved cell array. Furthermore, the present disclosure relates to a method of assembling a cell array.
BACKGROUND
Recently, there have been a rapid development in battery packs because of their use as energy storage solution for various uses ranging from domestic use to transportation use. The battery pack comprises a set of any number of identical batteries or individual battery cells. The battery cells are assembled as cell arrays and multiple cell arrays are combined to form the battery pack.
In conventionally used battery-packs, a large number of battery cells are electrically connected and used as a single unit due to the necessity of high voltage and current output and large capacity. Such battery packs generate a large amount of heat during a charging and discharging process due to the resistance of the electrical connections inside the battery pack. When heat generated during the charging and discharging process is not effectively eliminated, heat accumulation may occur, which may accelerate deterioration of the battery cell, and according to circumstances, the battery module may catch fire or explode.
Moreover, the individual battery cells are electrically connected using bus-bars. However, the bus-bars are a factor that increases current loss in the battery-packs during the transfer of current to a load, thus degrading energy efficiency. Furthermore, connecting bus bars to the terminals of the cells in the battery pack poses a challenge as the bus bars with high electrical resistance increases the energy loss in the form of heat. Conversely, bus bars with low electrical resistance are difficult to weld on the terminals of the cells as the there is insufficient resistance to generate enough heat for welding. Such welding would result in poor weld strength. Thus, connecting the bus bars with the terminals of the cells in the battery pack is always a trade-off between weld strength and heating in the battery pack.
Thus, there exists a need for a battery-cell array capable of quickly dissipating heat generated during the charging and discharging of the power-pack. Also, a battery-cell array with improved weld strength is desirable.
SUMMARY
An object of the present disclosure is to provide a cell array for a battery pack with improved internal electrical connections and heat dissipation capabilities.
Another object of the present disclosure is to provide a battery pack with at least one cell array having improved internal electrical connections and heat dissipation capabilities.
Another object of the present disclosure is to provide a method of assembling an improved cell array with better internal electrical connections and heat dissipation capabilities.
In accordance with first aspect of the present disclosure, there is provided a cell array for a battery pack, wherein the cell array comprises a plurality of cylindrical battery-cells, a first bus bar plate, a second bus bar plate and coupling member plates. The plurality of cylindrical battery-cells comprises a first terminal and a second terminal. The plurality of cylindrical battery-cells are vertically arranged in a cell holder. The first bus bar plate connects the first terminal of the plurality of cylindrical battery-cells and the second bus bar plate for connecting the second terminal of the plurality of cylindrical battery-cells to an output load. The first bus bar plate and the second bus bar plate comprise a plurality of openings concentric to the first and second terminal of the plurality of cylindrical battery-cells. The coupling member plates are configured between the terminals of the plurality of cylindrical battery-cells and the bus bar plates for electrically connecting the plurality of cylindrical battery-cells and the bus bar plates. The coupling member plates comprise a plurality of circular embossed bulges, wherein each of the plurality of circular embossed bulge electrically connects each of the terminals of the plurality of cylindrical battery-cells and the each of the plurality of openings of the bus bar plates.
The present disclosure provides a cell array for a battery pack with improved internal weld strength and better heat dissipation. The cell array, as disclosed in the present disclosure is advantageous in terms of having better weld strength of cell terminals for forming electrical connection. Furthermore, the cell array of the present disclosure is advantageous in terms of providing less heat generation during the charging and discharging process of the battery pack. Furthermore, the cell array of the present disclosure is advantageous in terms of providing better heat dissipation leading to improved battery pack health and longer operational life.
In accordance with second aspect of the present disclosure, there is provided a battery pack comprising at least one cell array, as disclosed in the first aspect.
In accordance with third aspect of the present disclosure, there is provided a method of assembling a cell array. The method comprises vertically arranging a plurality of cylindrical battery-cells comprising a first terminal and a second terminal, connecting a first bus bar plate with first terminal of the plurality of cylindrical battery-cells and connecting s second bus bar plate with the second terminal of the plurality of cylindrical battery-cells to electrically connect the first terminal and the second terminal of the plurality of cylindrical battery-cells to an output load, and configuring coupling member plates between the terminals of the plurality of cylindrical battery-cells and the bus bar plates for electrically connecting the plurality of cylindrical battery-cells and the bus bar plates, wherein the coupling member plates comprises a plurality of circular embossed bulges, wherein each of the plurality of circular embossed bulge electrically connects each of the terminals of the plurality of cylindrical battery-cells and the each of the plurality of openings of the bus bar plates.
Additional aspects, advantages, features and objects of the present disclosure would be made apparent from the drawings and the detailed description of the illustrative embodiments constructed in conjunction with the appended claims that follow.
It will be appreciated that features of the present disclosure are susceptible to being combined in various combinations without departing from the scope of the present disclosure as defined by the appended claims.
BRIEF DESCRIPTION OF DRAWINGS
The summary above, as well as the following detailed description of illustrative embodiments, is better understood when read in conjunction with the appended drawings. For the purpose of illustrating the present disclosure, exemplary constructions of the disclosure are shown in the drawings. However, the present disclosure is not limited to specific methods and instrumentalities disclosed herein. Moreover, those in the art will understand that the drawings are not to scale. Wherever possible, like elements have been indicated by identical numbers.
Embodiments of the present disclosure will now be described, by way of example only, with reference to the following diagrams wherein:
FIG. 1 illustrates an exploded view of a cell array for a battery pack, in accordance with an aspect of the present disclosure.
FIG. 2 illustrates a block diagram of two-dimensional front view of a cell array for a battery pack, in accordance with an embodiment of the present disclosure.
FIG. 3 illustrates a flow chart of a method of assembling a cell array, in accordance with another aspect of the present disclosure.
In the accompanying drawings, an underlined number is employed to represent an item over which the underlined number is positioned or an item to which the underlined number is adjacent. A non-underlined number relates to an item identified by a line linking the non-underlined number to the item. When a number is non-underlined and accompanied by an associated arrow, the non-underlined number is used to identify a general item at which the arrow is pointing.
DETAILED DESCRIPTION
The following detailed description illustrates embodiments of the present disclosure and ways in which they can be implemented. Although some modes of carrying out the present disclosure have been disclosed, those skilled in the art would recognise that other embodiments for carrying out or practising the present disclosure are also possible.
The description set forth below in connection with the appended drawings is intended as a description of certain embodiments of a motor of an electric vehicle and is not intended to represent the only forms that may be developed or utilised. The description sets forth the various structures and/or functions in connection with the illustrated embodiments; however, it is to be understood that the disclosed embodiments are merely exemplary of the disclosure that may be embodied in various and alternative forms. The figures are not necessarily to scale; some features may be exaggerated or minimised to show details of particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention.
While the disclosure is susceptible to various modifications and alternative forms, specific embodiment thereof has been shown by way of example in the drawings and will be described in detail below. It should be understood, however, that it is not intended to limit the disclosure to the particular forms disclosed, but on the contrary, the disclosure is to cover all modifications, equivalents, and alternatives falling within the scope of the disclosure.
The terms “comprise”, “comprises”, “comprising”, “include(s)”, or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a setup, system that comprises a list of components or steps does not include only those components or steps but may include other components or steps not expressly listed or inherent to such setup or system. In other words, one or more elements in a system or apparatus preceded by “comprises... a” does not, without more constraints, preclude the existence of other elements or additional elements in the system or apparatus.
In the following detailed description of the embodiments of the disclosure, reference is made to the accompanying drawings and which are shown by way of illustration specific embodiments in which the disclosure may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the disclosure, and it is to be understood that other embodiments may be utilized and that changes may be made without departing from the scope of the present disclosure. The following description is, therefore, not to be taken in a limiting sense.
The present disclosure will be described herein below with reference to the accompanying drawings. In the following description, well known functions or constructions are not described in detail since they would obscure the description with unnecessary detail.
A used herein, the term “battery pack”, “battery”, and “power pack” are used interchangeably and refers to multiple individual battery cells connected together to provide a higher combined voltage or capacity than what a single battery can offer. The battery pack is designed to store electrical energy and supply it as needed to various devices or systems. Battery pack, as referred herein may be used for various purposes such as power electric vehicles and other energy storage applications. Furthermore, the battery pack may include additional circuitry, such as a battery management system (BMS), to ensure the safe and efficient charging and discharging of the battery cells. The battery pack comprises a plurality of cell arrays which in turn comprises a plurality of battery cells.
As used herein, the term “cell array” refers to an assembled unit of a plurality of cylindrical battery cells that are connected together physically and electrically to form a larger energy storage system. Each cell within the array is typically a discrete unit capable of storing electrical energy. The cell arrays can be arranged in series or parallel configuration depending on the desired voltage and capacity requirements. It is understood that connecting cell arrays in series increases the overall voltage of the battery pack, while connecting them in parallel increases the capacity. The electrical connections in the cell array are formed by connecting the terminals of the battery cells with bus bars. Furthermore, in addition to the individual cells, a battery pack may also include circuitry for balancing the charge levels of the cells, managing the charging and discharging processes, and providing safety features such as overcharge and over-discharge protection. The cell array, along with the associated electronics and packaging, forms the core component of a battery pack, enabling the efficient and reliable storage and delivery of electrical energy.
As used herein, the term “battery cell”, “cells” and “battery-cell” are used interchangeably and refers to basic unit that generates and stores electrical energy. A battery is typically composed of one or more individual cells connected together. The cells may be comprised of different chemistry including lithium-ion cells, solid state cells, zinc-carbon and alkaline cells, nickel metal hydride, nickel cadmium and so forth. Furthermore, the battery cells may include various types of cells including cylindrical cells, prismatic cells, pouch cells, coin cells or any customised shape cells.
As used herein, the term “cell holder” and “holder” are used interchangeably and refers to a component of the used to securely hold and position individual battery cells within the cell array. The primary purpose of a cell holder is to provide mechanical support and protection for the battery cells. It helps maintain the structural integrity of the cell array, preventing cells from shifting or coming into contact with each other, which could cause damage or safety hazards. It would be appreciated that the cell holders are crucial in ensuring the proper assembly, alignment, and electrical connectivity of battery cells within the cell array. They contribute to the overall reliability, safety, and performance of the battery system by preventing cell damage, maintaining consistent contact, and facilitating efficient power transfer.
As used herein, the terms “bus bar” and “bus bar plates” are used interchangeably and refers to a conductive metal strip or plate used to facilitate the distribution of electrical power or signals within the cell array. The bus bar plate serves as a common electrical connection point for multiple battery cells.
As used herein, the terms “output load” and “load” are used interchangeably and refers to any component in an electrical circuit that consumes electrical power to perform a specific task or function. The battery pack provides the electrical energy to the load for the functioning of the load.
As used herein, the term “coupling member plate” and “coupling member” are used interchangeably and refers to conductive metal strip or plate to be welded on the terminals of the battery cells. The coupling member facilitates electrical connection between the terminal of the battery cell and the bus bar.
As used herein, the term “circular embossed bulging”, “embossed bulging” and “bulging” are used interchangeably and refers to localized deformation or distortion protruding or swelling outward from its original shape in a sheet or strip.
As used herein, the term “thermal cooling plate” and “cooling plate” are used interchangeably and refers to a structure that is used to dissipate heat generated during the operation of the battery cells in the cell array. It would be understood that the cooling plate is designed to maintain optimal temperature levels within the cell array, preventing excessive heat build-up that can affect the performance, lifespan, and safety of the cells. The cooling plate may include metal heat spreader, liquid cooling plate, finned cooling plate and so forth.
As used herein, the term “thermal cooling pad” and “cooling pad” are used interchangeably and refers to a soft, compressible material used to enhance heat transfer between two surfaces. It is to be understood that the thermal cooling pad fills in microscopic air gaps and uneven surfaces between the heat source and the heat sink, ensuring efficient heat transfer and minimizing thermal resistance. By improving the contact between the two surfaces, the thermal cooling pad enhances the conduction of heat from the heat-generating component to the heat sink, allowing for more effective cooling.
Figure 1, in accordance with an embodiment describes an exploded view of a cell array 100 for a battery pack, wherein the cell array 100 comprises a plurality of cylindrical battery-cells 102, a first bus bar plate 108A, a second bus bar plate 108B and coupling member plates 112A & 112B. The plurality of cylindrical battery-cells 102 comprises a first terminal 104A and a second terminal 104B. The plurality of cylindrical battery-cells 102 are vertically arranged in a cell holder 106. The first bus bar plate 108A connects the first terminal 104A of the plurality of cylindrical battery-cells 102 and the second bus bar plate 108B for connecting the second terminal 104B of the plurality of cylindrical battery-cells 102 to an output load. The first bus bar plate 108A and the second bus bar plate 108B comprise a plurality of openings 110 concentric to the first and second terminal 104A & 104B of the plurality of cylindrical battery-cells 102. The coupling member plates 112A & 112B are configured between the terminals 104A & 104B of the plurality of cylindrical battery-cells 102 and the bus bar plates 108A & 108B for electrically connecting the plurality of cylindrical battery-cells 102 and the bus bar plates 108A & 108B. The coupling member plates 112A & 112B comprise a plurality of circular embossed bulges, wherein each of the plurality of circular embossed bulge electrically connects each of the terminals 104A & 104B of the plurality of cylindrical battery-cells 102 and the each of the plurality of openings 110 of the bus bar plates 108A & 108B.
The cell array 100, as disclosed in the present disclosure is advantageous in terms of providing improved internal weld strength and better heat dissipation. The cell array 100, as disclosed in the present disclosure is advantageous in terms of having better weld strength of cell terminals for forming electrical connection with the bus bars 108A & 108B. Furthermore, the cell array 100 of the present disclosure is advantageous in terms of providing less heat generation during the charging and discharging process of the battery pack. Furthermore, the cell array 100 of the present disclosure is advantageous in terms of providing better heat dissipation leading to improved battery pack health and longer operational life. It would be appreciated that the coupling member plates 112A & 112B being welded on the terminals 104A & 104B of the plurality of cylindrical battery-cells 102 improves the welding strength resulting in improved structural robustness of the cell array 100 and better electrical conductivity from the cell array 100 to the load (discharging) or power source to cell array 100 (charging). Such improved electrical conductivity would result in less resistance in the cell array 100 leading to less heat generation during the flow of current in the cell array 100 and better heat dissipation.
In an embodiment, the cell holder 106 comprises an upper compartment 106A and a lower compartment 106B. It is to be understood that the upper compartment 106A and lower compartment 106B are removably joined to form the cell holder 106. The upper compartment 106A and lower compartment 106B may be removably joined together by various known techniques including screws, rivets, nut-bolts and so forth.
In an embodiment, the cell array 100 comprises thermal cooling plates 114A & 114B, mounted on an outer surface of each of the bus bar plates 108A & 108B. It is to be understood that one thermal cooling plate is mounted with each of the bus plates 108A & 108B. Advantageously, the thermal cooling plates 114A & 114B ensures regular and uniform cooling of the battery cells 102 inside the cell array 100.
In an embodiment, the cell array 100 comprises at least one thermal pad, installed between the thermal cooling plates 114A & 114B and the bus bar plates 108A & 108B, wherein the at least one thermal pad comprises a plurality of circular embossed bulges protruding through the plurality of openings 110 in the bus bar plates 108A & 108B to establish physical contact with the plurality of circular embossed bulges of the coupling member plates 112A & 112B. Advantageously, such arrangement of at least one thermal cooling pad ensures efficient heat transfer from the bus bar plates 108A & 108B, the coupling member plates 112A & 112B, and the terminals 104A & 104B to the thermal cooling plates 114A & 114B. Furthermore, the plurality of openings 110 concentric to the first and second terminal 104A & 104B of the plurality of cylindrical battery-cells 102 advantageously allows the at least one thermal pad to have physical contact with the coupling member plates 112A & 112B, and the terminals 104A & 104B for maximum heat transfer from the same to the thermal cooling plates 114A & 114B.
In an embodiment, the coupling member plates 112A & 112B are made of a material selected from a group of: Aluminum, Beryllium Copper, Brass, Cold Rolled Steel, Copper, Fernico Alloys, Galvanized Steel, Gold, Austenitic Nickel-Chromium superalloys, Iron-Chromium-Aluminum FeCrAl, Nickel–Cobalt Ferrous Alloy, Nichrome, Molybdenum, Tungsten, Nickel, Niobium, Phosphor Bronze, Platinum, Stainless Steel, Titanium or combination thereof.
In an embodiment, the terminals 104A & 104B of the plurality of cylindrical battery-cells 102 are made of a material selected from a group of: Aluminum, Beryllium Copper, Brass, Cold Rolled Steel, Copper, Fernico Alloys, Galvanized Steel, Gold, Austenitic Nickel-Chromium superalloys, Iron-Chromium-Aluminum FeCrAl, Nickel–Cobalt Ferrous Alloy, Nichrome, Molybdenum, Tungsten, Nickel, Niobium, Phosphor Bronze, Platinum, Stainless Steel, Titanium or combination thereof.
In an embodiment, the coupling member plates 112A & 112B and the terminals 104A & 104B of the plurality of cylindrical battery-cells 102 are made of same material. Advantageously, the use of same material for coupling member plates 112A & 112B and the terminals 104A & 104B of the plurality of cylindrical battery-cells 102 provides high weld strength. It would be appreciated that such use of same material is not possible with conventional arrangement of welding bus bar on the terminals of the cells. The coupling member plates 112A & 112B advantageously allows use of such same materials for being welded over the terminals 104A & 104B of the plurality of cylindrical battery-cells 102.
In an embodiment, the coupling member plates 112A & 112B and the terminals 104A & 104B of the plurality of cylindrical battery-cells 102 are welded using spot welding. It is to be understood that the spot welding may be controlled based on the parameters including but not limited to welding current, welding time, electrode force, electrode tip geometry, electrode material and so forth.
Alternatively, in an embodiment the coupling member plates 112A & 112B and the terminals 104A & 104B of the plurality of cylindrical battery-cells 102 are welded using laser welding. It is to be understood that the laser welding may be controlled based on the parameters including but not limited to pulse power, welding speed, beam focus and spot size, shielding gas, pulse parameters and so forth.
In an embodiment, each of the cell 102 is checked for weld quality to ensure proper welding. Furthermore, the cell array 100 is tested by performing vibration test as per AIS 048 and/or AIS 156. Furthermore, the cell array 100 is tested by performing thermal imaging to ensure proper distribution of the heat in the cell array 100 and to prevent formation of any hotspot in the cell array 100.
In an embodiment, the bus bar plates 108A & 108B are secured on the coupling member plates 112A & 112B by welding, screws or nut-bolts.
Figure 2, in accordance with an embodiment describes two-dimensional front view of the cell array 200 (also referred as 100), in accordance with an embodiment of the present disclosure. The cell array 200 comprises the plurality of battery-cells 202 stacked together as shown in the figure. The first terminal 204A and a second terminal 204B are held in a cell holder with upper compartment 206A and lower compartment 206B. Furthermore, coupling member plates 206A & 206B are welded on the terminals 204A & 204B of the battery-cells 202. The plurality of circular embossed bulges of the coupling member plates 206A & 206B are in physical contact with the terminals 204A & 204B of the battery-cells 202. The bus bar plates 208A & 208B are mounted on the coupling member plates 206A & 206B to establish electrical connection between the battery-cells 202 and the output load.
In another aspect, a battery pack (not shown in figures) is disclosed, wherein the battery pack comprises at least one cell array 100.
Figure 3, in accordance with yet another aspect, describes a method 300 of assembling a cell array 100. The method 300 starts at step 302 and finishes at step 306. At step 302, the method 300 comprises vertically arranging a plurality of cylindrical battery-cells 102 comprising a first terminal 104A and a second terminal 104B. At step 304, the method 300 comprises connecting a first bus bar plate 108A with first terminal 104A of the plurality of cylindrical battery-cells 102 and connecting s second bus bar plate 108B with the second terminal 104B of the plurality of cylindrical battery-cells 102 to electrically connect the first terminal 104A and the second terminal 104B of the plurality of cylindrical battery-cells 102 to an output load. At step 306, the method 300 comprises configuring coupling member plates 112A & 112B between the terminals 104A & 104B of the plurality of cylindrical battery-cells 102 and the bus bar plates 108A & 108B for electrically connecting the plurality of cylindrical battery-cells 102 and the bus bar plates 108A & 108B, wherein the coupling member plates 112A & 112B comprises a plurality of circular embossed bulges, wherein each of the plurality of circular embossed bulge electrically connects each of the terminals 104A & 104B of the plurality of cylindrical battery-cells 102 and the each of the plurality of openings 110 of the bus bar plates 108A & 108B.
In an embodiment, the method 300 comprises subjecting the cell array 100 for at least one of: a vibration test and a thermal imaging test after being assembled.
It would be appreciated that all the explanations and embodiments of the cell array 100 also applies mutatis-mutandis to the method 300.
In the description of the present invention, it is also to be noted that, unless otherwise explicitly specified or limited, the terms “disposed,” “mounted,” and “connected” are to be construed broadly, and may for example be fixedly connected, detachably connected, or integrally connected, either mechanically or electrically. They may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Modifications to embodiments and combination of different embodiments of the present disclosure described in the foregoing are possible without departing from the scope of the present disclosure as defined by the accompanying claims. Expressions such as “including”, “comprising”, “incorporating”, “have”, “is” used to describe and claim the present disclosure are intended to be construed in a non- exclusive manner, namely allowing for items, components or elements not explicitly described also to be present. Reference to the singular is also to be construed to relate to the plural where appropriate.
Although embodiments have been described with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More particularly, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the present disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, alternative uses will also be apparent to those skilled in the art.

,CLAIMS:WE CLAIM:
1. A cell array (100) for a battery pack, wherein the cell array (100) comprises:
- a plurality of cylindrical battery-cells (102) comprising a first terminal (104A) and a second terminal (104B), wherein the plurality of cylindrical battery-cells (102) being vertically arranged in a cell holder (106);
- a first bus bar plate (108A) for connecting the first terminal (104A) of the plurality of cylindrical battery-cells (102) and a second bus bar plate (108B) for connecting the second terminal (104B) of the plurality of cylindrical battery-cells (102) to an output load, wherein the first bus bar plate (108A) and the second bus bar plate (108B) comprises a plurality of openings (110) concentric to the first and second terminal (104A, 104B) of the plurality of cylindrical battery-cells (102); and
- coupling member plates (112A, 112B) configured between the terminals (104A, 104B) of the plurality of cylindrical battery-cells (102) and the bus bar plates (108A, 108B) for electrically connecting the plurality of cylindrical battery-cells (102) and the bus bar plates (108A, 108B),
wherein the coupling member plates (112A, 112B) comprise a plurality of circular embossed bulges, wherein each of the plurality of circular embossed bulge electrically connects each of the terminals (104A, 104B) of the plurality of cylindrical battery-cells (102) and the each of the plurality of openings (110) of the bus bar plates (108A, 108B).
2. The cell array (100) as claimed in claim 1, wherein the cell array (100) comprises thermal cooling plates (114A, 114B), mounted on an outer surface of each of the bus bar plates (108A, 108B).
3. The cell array (100) as claimed in claim 1 and 2, wherein the cell array (100) comprises at least one thermal pad, installed between the thermal cooling plates (114A, 114B) and the bus bar plates (108A, 108B), wherein the at least one thermal pad comprises a plurality of circular embossed bulges protruding through the plurality of openings (110) in the bus bar plates (108A, 108B) to establish physical contact with the plurality of circular embossed bulges of the coupling member plates (112A, 112B).
4. The cell array (100) as claimed in claim 1 to 3, wherein the coupling member plates (112A, 112B) are made of a material selected from a group of: Aluminum, Beryllium Copper, Brass, Cold Rolled Steel, Copper, Fernico Alloys, Galvanized Steel, Gold, Austenitic Nickel-Chromium superalloys, Iron-Chromium-Aluminum FeCrAl, Nickel–Cobalt Ferrous Alloy, Nichrome, Molybdenum, Tungsten, Nickel, Niobium, Phosphor Bronze, Platinum, Stainless Steel, Titanium or combination thereof.
5. The cell array (100) as claimed in claim 1 to 4, wherein the terminals (104A, 104B) of the plurality of cylindrical battery-cells (102) are made of a material selected from a group of: Aluminum, Beryllium Copper, Brass, Cold Rolled Steel, Copper, Fernico Alloys, Galvanized Steel, Gold, Austenitic Nickel-Chromium superalloys, Iron-Chromium-Aluminum FeCrAl, Nickel–Cobalt Ferrous Alloy, Nichrome, Molybdenum, Tungsten, Nickel, Niobium, Phosphor Bronze, Platinum, Stainless Steel, Titanium or combination thereof.
6. The cell array (100) as claimed in claim 1 to 5, wherein the coupling member plates (112A, 112B) and the terminals (104A, 104B) of the plurality of cylindrical battery-cells (102) are made of same material.
7. The cell array (100) as claimed in claim 1 to 6, wherein the coupling member plates (112A, 112B) and the terminals (104A, 104B) of the plurality of cylindrical battery-cells (102) are welded using spot welding or laser welding.
8. The cell array (100) as claimed in claim 1 to 7, wherein the bus bar plates (108A, 108B) are secured on the coupling member plates (112A, 112B) by welding, screws or nut-bolts.
9. A battery pack, wherein the battery pack comprises at least one cell array (100) of claims 1 to 8.
10. A method (300) of assembling a cell array (100), wherein the method (300) comprises:
- vertically arranging a plurality of cylindrical battery-cells (102) comprising a first terminal (104A) and a second terminal (104B);
- connecting a first bus bar plate (108A) with first terminal (104A) of the plurality of cylindrical battery-cells (102) and connecting s second bus bar plate (108B) with the second terminal (104B) of the plurality of cylindrical battery-cells (102) to electrically connect the first terminal (104A) and the second terminal (104B) of the plurality of cylindrical battery-cells (102) to an output load; and
- configuring coupling member plates (112A, 112B) between the terminals (104A, 104B) of the plurality of cylindrical battery-cells (102) and the bus bar plates (108A, 108B) for electrically connecting the plurality of cylindrical battery-cells (102) and the bus bar plates (108A, 108B),
wherein the coupling member plates (112A, 112B) comprises a plurality of circular embossed bulges, wherein each of the plurality of circular embossed bulge electrically connects each of the terminals (104A, 104B) of the plurality of cylindrical battery-cells (102) and the each of the plurality of openings (110) of the bus bar plates (108A, 108B).
11. The method (300) as claimed in claim 10, wherein the method (300) comprises subjecting the cell array (100) for at least one of: a vibration test and a thermal imaging test after being assembled.