WO2023242865A1

WO2023242865A1 - A pouch cell holder assembly, a battery pack module, and a battery pack

Info

Publication number: WO2023242865A1
Application number: PCT/IN2023/050557
Authority: WO
Inventors: Zahir Ummer Zaid; Nihar Verma
Original assignee: Ola Electric Mobility Private Limited
Priority date: 2022-06-14
Filing date: 2023-06-13
Publication date: 2023-12-21

Abstract

Examples of a pouch cell holder assembly (100), a battery pack module (500), and a battery pack (600) are described. The pouch cell holder assembly (100) includes a base plate (102) a bracket portion (108) extending orthogonally from each corner of a first surface (104) of the base plate (102). The first surface (104) of the base plate (102) further includes a depression (110) with an opening (112) formed within the depression (110). The holder assembly (100) further includes a first cooling plate (114) and a second cooling plate (118) with a pouch cell (116) sandwiched between them. Further, the holder assembly (100) includes a compression pad (122) which is placed over the second cooling plate (118) to maintain required pressure on the pouch cell (116).

Description

A POUCH CELL HOLDER ASSEMBLY, A BATTERY PACK MODULE, AND A BATTERY PACK

BACKGROUND

[0001] Energy storage devices, such as pouch cells or batteries, are typically used in variety of electrical and mechanical devices to power different components of these devices. Examples of such devices include, but are not limited to mobile phones, electronic cameras, automobiles, watches, etc. Generally, such pouch cells include repeated stack of multiple layers of components which are enclosed in an aluminium laminated film case in which each stack includes electrodes, electrolyte and a separator. Due to generation of gas from electrochemical and chemical reactions inside the pouch cell, swelling of pouch cells happens which lead to expansion in the pouch cell. In some cases, the pressure from swelling may even crack the cover of the pouch cell which may pose safety risk to adjacent cells, in case of multiple cells stacked onto each other, as well as to the whole system in which such cells are installed for powering different components.

BRIEF DESCRIPTION OF DRAWINGS

[0002] The detailed description is provided with reference to the accompanying figures, wherein:

[0003] FIG. 1A illustrates an expanded view of various components of a pouch cell holder assembly, in accordance with one example of the present subject matter; [0004] FIG. 1 B illustrates a perspective view of a pouch cell holder assembly, in accordance with one example of the present subject matter;

[0005] FIG. 2 illustrates a perspective view of a base plate of a pouch cell holder assembly, in accordance with one example of the present subject matter;

[0006] FIG. 3 illustrates a side view of a pouch cell holder assembly, in accordance with one example of the present subject matter; [0007] FIG. 4 illustrates a side view of a first pouch cell holder assembly stacked onto a second pouch cell holder assembly, in accordance with one example of the present subject matter;

[0008] FIG. 5A illustrates an expanded view of a battery pack module, in accordance with one example of the present subject matter;

[0009] FIG. 5B illustrates a perspective view of a battery pack module, in accordance with one example of the present subject matter; and

[0010] FIG. 6 illustrates a perspective view of a battery pack, in accordance with one example of the present subject matter.

[0011 ] It may be noted that throughout the drawings, identical reference numbers designate similar, but not necessarily identical, elements. The figures are not necessarily to scale, and the size of some parts may be exaggerated to more clearly illustrate the example shown. Moreover, the drawings provide examples and/or implementations consistent with the description; however, the description is not limited to the examples and/or implementations provided in the drawings.

DETAILED DESCRIPTION

[0012] In view of increasing environmental degradation due to air pollution caused by emission from vehicles, there is an upsurge in the demand for the development of electric vehicles. In the past few decades, significant research has been carried out to develop high energy and power density lithium-ion cells or batteries which may power these electric vehicles. At the same time, there is a need to ensure that the cells that are being developed are safe and reliable with increased life cycle. Furthermore, because of their low self-discharge, they are the most promising energy storage technology for industrialization.

[0013] Generally, there are various form factors of cells, e.g., cylindrical cells, pouch cells and prismatic form of cells. In recent years, much interest has been towards pouch-shaped cells because of their low manufacturing costs, light weight, easy modification in shape and so on. However, for optimum power and sufficiently long cycle life, it is important to operate these batteries in an operating temperature range. There is a significant effect of this temperature range on the performance of such pouch cells.

[0014] In some cases, swelling happens in pouch cells when the operating temperature range of these cells exceeds a certain limit which may speed up the rate at which the electrolyte decomposes, which could contribute to gases building up inside a cell. For example, during operations such as overcharging and deep discharging which accelerate electrochemical reactions between the electrodes and electrolyte, with release of heat and gases which in turn results in swelling or bulging. In some cases, the pressure from swelling may even crack the cover of these pouch cells and in worse cases, puncture the swollen cells leading to release of the built up gas. To keep such pouch cells within their operational temperature ranges, different cooling apparatus or techniques are used which may appropriately cool down the battery to prevent swelling and expansion.

[0015] However, it is well known that the pouch cell is made up of a soft film material which on swelling due to gas generation, results in less contact between the cooling apparatus and the pouch cell. Therefore, in such cases, the cooling apparatus may not be able appropriately cool down the pouch cell. Further, this problem is more significant if the batteries are subjected to fast charging or fast discharging at substantially higher than normal rates. For this reason, the pouch battery is required to be cooled in a targeted manner. Conventionally, there have been numerous studies on the development of an effective cooling strategy in a battery system. For example, cooling systems based on air cooling, coolant cooling or refrigerant cooling are the few technologies that were established. However, none has been directed for such a cell holder assembly which cools down the cells and restricts expansion or swelling of the cells too.

[0016] Examples of a pouch cell holder assembly, a battery pack module, and a battery pack are described. The pouch cell holder assembly includes a base plate having a first surface and a second surface. In an example, the first surface of the base plate includes a bracket portion which is extending orthogonally from each corner of the first surface of the base plate. The first surface of the base plate further includes a depression with an opening formed within the depression. In another example, the depression present on the first surface of the base plate include a pair of opening with a connecting stem separating the two openings.

[0017] The pouch cell holder assembly further includes a first cooling plate which is to be accommodated onto the first surface of the base plate. In an example, the first cooling plate is removably fixed into the depression formed on the first surface of the base plate. Further, the pouch cell holder assembly includes a second cooling plate which is to be accommodated over the first cooling plate and below the bracket portions which are extending from the first surface of the base plate. In an example, the second cooling plate and the first cooling plate sandwiches a pouch cell between the two with second cooling plate on top and first cooling plate below the pouch cell. [0018] In an example, owing to the expansion of pouch cell due to heating or any other reason, the second cooling plate is also floated along with the pouch cell to expand from a rest position to a floated position. It may be noted that, pouch cell due to swelling may expand in a convex shaped structure which may lead to lose in contact of the pouch cell and the second cooling plate. In such a situation, the appropriate force needs to be applied on the second cooling plate to restrict its floating and to keep the second cooling plate in contact with the pouch cell and reduce the convex shaped structure of pouch cell. The present pouch cell holder assembly include one or more features for achieving this objective. For example, each of the bracket portions which are present on the first surface of the base plate includes a flanged portion extending orthogonally from one of the surfaces of the bracket portions. Such flanged portion of bracket portions prevents the movement of second cooling plate from corners beyond the floated position.

[0019] In addition, to restrict expansion or to provide required force or to apply required pressure onto the pouch cell to keep the second cooling plate in contact with the pouch cell, the pouch cell holder assembly further includes a compression pad which is placed over the second cooling plate. In an example, the pouch cell holder assembly may include a pair of compression pads which are placed over the second cooling plate. It may be noted that, the number and size of the compression pads resembles to the number of openings present in the depression of the first surface of the base plate. Therefore, in case of one pouch cell holder assembly stacked onto the other pouch cell holder assembly and the pouch cell of lower pouch cell holder assembly swells up, the compression pads of the lower assembly gets accommodated into the openings of the upper assembly and gets compressed due to a force generated due to swelling of the pouch cell. In response, the material of the compression pad is such that it generates a reactive expansion force within the compression pad to get expanded. Due to this expansion an equal amount of compression force is applied onto the second cooling plate to restrict swelling of pouch cell which simultaneously enable a close contact between the second cooling plate and the pouch cell. In an example, the material of the compression is decided based on several characteristic properties, such as density, compression-force deflection, and compression set of the material.

[0020] In another example, the bracket portions present on the first surface of the base plate further includes a curved groove on its top surface. Further, in contrast to the grooves, the second surface of the base plate includes a raised platform which is to be accommodated between the grooves when two pouch cell holder assemblies are stacked onto each other.

[0021] The present subject matter further provides a battery pack module comprising a plurality of above-described pouch cell holder assembly including respective pouch cell installed therein. In an example, the battery pack module includes a first pouch cell holder assembly and a second pouch cell holder assembly which is to be stacked onto the first pouch cell holder assembly. The first and second pouch cell holder assembly includes components as described above. In an example, while stacking the first pouch cell holder assembly onto the second pouch cell holder assembly to form the battery pack module, the bottom surface or the second surface of the second pouch cell holder assembly is affixed onto the bracket portions of the first pouch cell holder assembly.

[0022] Specifically, while stacking, the raised platform present on the second surface of the base plate of the second pouch cell holder assembly is affixed or accommodated between the curved groves formed on the top surface of the bracket portions of the first pouch cell holder assembly. Further, due to such affixing, the compression pads of the first pouch cell holder assembly is accommodated into the openings of the second pouch cell holder assembly to experience a compression force while swelling and in response expands to provide the expansion force to the pouch cell to maintain or restrict expansion of the pouch cell. In another example, the present subject matter further describes a battery pack including a plurality of battery pack module with each of the battery pack module including a plurality of pouch cell holder assembly stacked onto each other.

[0023] It may be noted that the examples as described above have been described in the context that a first pouch cell holder assembly is stacked with a second pouch cell holder assembly to form a battery pack module. The same should not be construed as a limitation and in another example, the battery pack module may include any number of pouch cell holder assembly stacked onto each other without deviating from the scope of the present subject matter.

[0024] The above aspects are further described in conjunction with the figures, and in associated description below. It should be noted that the description and figures merely illustrate principles of the present subject matter. Therefore, various assembly that encompass the principles of the present subject matter, although not explicitly described or shown herein, may be devised from the description and are included within its scope.

[0025] An example pouch cell holder assembly is depicted in FIG.1. FIG. 1A illustrates an expanded view of a pouch cell holder assembly 100 and FIG. 1 B illustrates a perspective view of the pouch cell holder assembly 100 (referred to as holder assembly 100), in accordance with one implementation of the present subject matter. In one example, the holder assembly 100 includes a base plate 102 which includes a first surface 104 and a second surface 106. In an example, the base plate 102 is the components which accommodate the pouch cell. The base plate 102 further includes a plurality of bracket portions 108-1 , 108-2, 108-3, and 108-4 (collectively referred to as bracket portions 108) with each of the bracket portions 108 extending orthogonally from each corner of the base plate 102 from the first surface 104. It may be noted that, as depicted in FIG. 1 , the base plate is a quadrilateral having four corners, therefore, each corner of such base plate 102 includes one bracket portion 108.

[0026] Returning to the present example, the first surface 104 of the base plate 102 further includes a depression 110 formed on the first surface 104. It may be noted that, although, the depression 110 as depicted in FIG. 1 is of quadrilateral shape, however, any other shape of the depression 110 may be used based on the requirement. Further, the depression 110 formed on the first surface 104 of the base plate 102 includes an opening 112. In an example, the number of openings may vary based on the requirement. For example, in FIG. 1 , two openings are depicted, however, it may changes based on the requirement.

[0027] Continuing further, the holder assembly 100 further includes a first cooling plate 114 which is accommodated onto the first surface 104 of the base plate 102 and a second cooling plate 118 accommodated over the first cooling plate 1 14. In an example, the first cooling plate 114 is removable fixed into the depression 110 of the first surface 104 of the base plate 102. The second cooling plate 118 is further accommodated onto the first cooling plate 114 with a pouch cell 116 sandwiched between the first cooling plate 114 and the second cooling plate 118. Further, the second cooling plate 118 is floatable between a rest position and a floated position. For example, when the pouch cell 116 placed between the first cooling plate 114 and the second cooling plate 118 is in normal condition, i.e., not swelled up, the second cooling plate 118 is in rest position contacting the pouch cell 116. On the other hand, when the pouch cell 116 is swelled up and expanding, the second cooling plate 118 floats by being or not being in contact with the pouch cell 116. However, such contact between the second cooling plate 118 and the pouch cell 116 is necessary to appropriately cool the pouch cell 116 during swelling.

[0028] To achieve the same, the movement or floating of second cooling plate 118 along with the pouch cell 116 is restricted by a compression pad 122 placed over the second cooling plate 118. In an example, the compression pad 122 provides necessary force to limit the expansion of the pouch cell 116 and to ensure that the thermal contact on both faces of the pouch cell 116 with the cooling plates remains. In another example, to restrict movement or expansion of second cooling plate 118 along with the pouch cell 1 16, each of the bracket portions 108 further includes a flanged portion below which the second cooling plate 118 is kept which restrict motion or expansion (the position and functioning of flanged portion is described in detail in conjunction with FIG. 2).

[0029] Returning to the present example, the holder assembly 100 further includes a temperature sensor 120 which is placed over the second cooling plate 118 to monitor the temperature of the pouch cell 1 16. In an example, since the pouch cell 116 is in close contact with the second cooling plate 118, the temperature sensor 120 placed on the second cooling plate 118 may accurately measure or monitor the temperature of the pouch cell and provide accurate readings to other components.

[0030] FIG. 2 illustrates a perspective view of a base plate, such as base plate 102 of a pouch cell holder assembly, such as holder assembly 100, in accordance with one implementation of the present subject matter. The base plate 102, as depicted in FIG. 2, in addition to components as described in FIG. 1A-1 B, includes a pair of openings 202-1 , 202-2 (collectively referred to as openings 202) which are separated by a connecting stem 204. It may be noted that, although, two openings are depicted in FIG. 2, any number of openings may be used without deviating from the scope of the present subject matter. The base plate 102 further includes a flanged portion 206 on each of a bracket portion, such as bracket portions 108. The flanged portion 206 may extends orthogonally from the inner surface of the bracket portions 108 (as depicted in FIG. 2).

[0031] Such flanged portion 206 helps in retaining the second cooling plate 118 (not shown in FIG. 2) along with pouch cell 116 when swelling or expanding due to temperature changes or any other changes. The flanged portion 206 of each of the bracket portions 108 combinedly retain the second cooling plate 118 within its floated position and does not allow to go beyond that. Each of the bracket portions 108 may further include a curved groove 208 which helps in accommodating another pouch cell holder assembly in stacked position on top of the holder assembly 100.

[0032] In contrast to curved grooves 208, the second surface 106 of the base plate 102 may include a raised platform 210. While stacking one holder assembly onto the other, such raised platform 210 of the upper holder assembly may affixed or accommodated between the curved groves 208. As a consequence of this fixation, the compression pads 122 which are placed on top of the second cooling plate 118 gets accommodated into the openings of the upper holder assembly (This aspect will be described in detail in conjunction with FIG. 5).

[0033] FIG. 3 illustrates a side view of a pouch cell holder assembly, in accordance with one example of the present subject matter. As depicted in FIG. 3, the holder assembly 100 includes a base plate, such as base plate 102 having the first surface 104 and the second surface 106. This base plate 102 acts as the body of the holder assembly 100 which accommodates the pouch cell 116 and other components. The base plate further includes bracket portions 108 which are extending orthogonally from the first surface 104 of the base plate 102. These bracket portions 108 extends from corner of the base plate 102. Further, these bracket portions 108 acts as a retainer element for retaining multiple components within the limit of expansion.

[0034] As described above as well, the holder assembly further includes first cooling plate 1 14, pouch cell 116, second cooling plate 118, and compression pad 122. In which, the first cooling plate 114 (as depicted in FIG. 3) is fixed into the depression 110 (which is now shown in FIG. 3) which is formed on the first surface 104 of the base plate 102. Thereafter, the pouch cell 116 is placed on top of first cooling plate 114 and sandwiched by the second cooling plate 118 by placing it over the pouch cell 116. As may be understood, during operation the pouch cell 116 may swell to expand which in turn pushes the second cooling plate 118 which placed over it to move it from its rest position. To keep the second cooling plate 118 in contact with the pouch cell 116, the second cooling plate 118 needs to be intact within the base plate 102.

[0035] To do so, the bracket portions 108 further includes flanged portion (not shown in FIG. 3) on each of the bracket portions 108 extending orthogonally from their inner surfaces. These flanged portions which are present on the bracket portions 108 restricts movement of corners of the second cooling plate 118 which may be caused due to expansion of pouch cell 116. In such a way, the contact between the pouch cell 116 and the second cooling plate 118 is kept intact to provide proper cooling of the pouch cell 116.

[0036] In addition to retainment of second cooling plate 118 within the base plate 102 by flanged portions of bracket portions, the holder assembly 100 further includes compression pad 122 which provide required pressure or apply required force onto the second cooling plate 118 to be in contact with the pouch cell 116. In an example, the number and size of the compression pad 122 depends on the number of openings present within the depression 1 10 of the base plate 102. These compression pads 122 gets accommodated into the openings of another holder assembly which is stacked on top of the lower holder assembly and experience a compression force while swelling of the pouch cell of the lower holder assembly and in response expands to provide the compression force to the pouch cell. As depicted in FIG. 3, the second cooling plate 118 further includes the temperature sensor 120 which is in close contact with the pouch cell 116 to monitor temperature of the pouch cell 116. In an example, a slit (not shown in FIG. 3) is formed on the second cooling plate 118 in which the temperature sensor 120 is fixed to be in contact with the pouch cell 116 which is beneath the second cooling plate 1 18.

[0037] FIG. 4 illustrates a side view 400 of a pouch cell holder assembly stacked onto another pouch cell holder assembly, in accordance with one example of the present subject matter. As depicted in FIG. 4, side of view 400 of stacked assembly includes a first pouch cell holder assembly 402 (referred to as first assembly 402) which is stacked onto a second pouch cell holder assembly 404 (referred to as second assembly 404).

[0038] In an example, the first assembly 402 includes a first base plate 406 with a first set of bracket portions 408-1 , 408-2, ... (collectively referred to as first bracket portions 408) extending orthogonally from the first base plate 406. The first assembly 402 further includes a first cooling plate 410, a first pouch cell 412 and a second cooling plate 414. In which, the first cooling plate 410 is fixed onto the first base plate 406 and sandwiches the first pouch cell 412 in between with the second cooling plate 414 on top of the first pouch cell 412. Further, a first compression pad 416 is placed on top of second cooling plate 414 to provide appropriate compression force onto the first pouch cell 412 and second cooling plate 414 during expansion to keep them in contact to get proper cooling of the first pouch cell 412.

[0039] Further, the second assembly 404 includes also includes a second base plate 418 with a second set of bracket portions 420-1 , 420-2, ... (collectively referred to as second bracket portions 420) extending orthogonally from the second base plate 418. The first assembly further includes a first cooling plate 422, a second pouch cell 424 and a second cooling plate 426. In which, similar to first assembly 402, the first cooling plate 422 is fixed onto the second base plate 418 and sandwiches the second pouch cell 424 in between with the second cooling plate 426 on top of the second pouch cell 424. Further, a second compression pad 428 (which is not visible completely in FIG. 4) is also placed on top of second cooling plate 426 to provide appropriate compression force onto the second pouch cell 424 and second cooling plate 426 during expansion to keep them in contact to get proper cooling of the first pouch cell 412.

[0040] It may be noted that, the second compression pads 428 of the second assembly 404 are not visible from the side view 400 as these are accommodated into the openings of the first assembly 402 which is placed on top of the second assembly 404. Once the second compression pads 428 gets accommodated, and the second pouch cell 424 starts swelling, the second compression pads 428 experiences a force generated due to swelling of the second pouch cell 424 and gets compressed against the base plate 406 of the first assembly 402.

[0041] Thereafter, in response, the material of the compression pads (either it is first compression pad 416 or the second compression pads 428) is such that it generates a reactive expansion force within the compression pads to get expanded and due to this expansion a compression force, which increases exponentially, is applied onto the second cooling plate 426 of the second assembly 404 to restrict swelling of second pouch cell 424 and simultaneously enable a close contact between the second cooling plate 424 and the second pouch cell 424. In an example, the material of the compression is decided based on several characteristic properties, such as density, compression-force deflection, and compression set. Such accommodation of compression pads of one assembly into the other assembly is accomplished by fitting or fixing the raised platform 210 which present on the second surface 106 of the base plate 102 (as shown in FIG. 2) between the curved grooves 208 of the bracket portions 108.

[0042] On stacking plurality of holder assemblies as depicted in FIG. 4 (in context of two assemblies) a battery pack module may be formed as depicted in FIG. 5. Specifically, FIG. 5A illustrates an expanded view of a battery pack module 500 and FIG. 5B illustrates a perspective view of the battery pack module 500, in accordance with one example of the present subject matter. It may be noted that, plurality of holder assemblies (such as holder assembly 100) are stacked with each other (as described in FIG. 4) to form the battery pack module 500. Once stacked, the stacked holder assemblies are enclosed within different components to form the battery pack module 500. The different components include a plurality of enclosing plate 502-1 , 502-2, 502-3, 502-4 (collectively referred to as enclosing plates 502) with a plurality of fastening brackets 504-1 , 504-1 , 504-1 , 504-1 (collectively referred to as fastening brackets 504) for enclosing plurality of holder assemblies. The battery pack module 500 further includes a pair of terminals 506-1 , 506-2 (collectively referred to as terminals 506) which may be used for charging or discharging the battery pack module 500.

[0043] Specifically, the enclosing plates 502 acts as a side wall for the stack of holder assembly 100 enclosing them in closed environment. In an example, the enclosing plates 502-1 and 502-3 also includes housing or depression to accommodate compression pads of distal holder assemblies for alignment purpose. It may be noted that, compressive force from the individual holder assembly 100 stacks up and is applied onto the enclosing plates 502-1 and 502-3. Further, the fastening brackets 504 locks the enclosing plates 502 together to form a closed container to form the battery pack module 500. It may be noted that, the required clamping force to counter the stacked-up compression force is provided by the fastening brackets 504. In an example, the preferred fastening method is bolting but any other method may also be used without deviating from the scope of the present subject matter. Further, the fastening brackets 504 may includes features which may be used for fastening the battery pack module 500 to a base plate of the battery.

[0044] In another example, the enclosing plates 502-2 and 502-4 may include plurality of slots for the individual holder assembly to route a battery tab of each pouch cell which is accommodated in the holder assembly 100 out of the stack. The battery tabs are folded on top of the enclosing plates 502-2 and 502-4. The enclosing plates 502-2 and 502-4 have features to support the folded tabs. The tabs from two adjacent holder assembly 100 are folded and placed on the enclosing plates 502-2 and 502-4. Then the tabs are connected to each other by laser welding or spot welding or any other method which is relevant. [0045] Further, the terminals 506 act as the final terminal for the battery pack module 500. The pouch cell from each holder assembly 100 interconnects with each other to finally connected to the terminate 506. The terminals 506 are made up of electrically high conducting materials like copper, aluminium etc.

[0046] FIG. 6 illustrates a perspective view of a battery pack 600, in accordance with one example of the present subject matter. In an example, the battery pack 600 is made up of multiple battery pack modules, such as battery pack module 500, which are fastened on to a base plate of the battery pack 600. Such base plate may act as an enclosure or the interface between the battery pack module 500 and cooling apparatus for thermal energy transfer. Further, the terminals 506 of each of the battery pack module 500 are interconnected with each other through wires, cables or busbars to electrically connect multiple battery pack module 500. It may be noted that, the number of battery module 500, the interconnection method of battery pack module 500 and fastening strategy of battery pack module 500 is decided based on the required output voltage/power.

[0047] Although aspects and other examples have been described in a language specific to structural features and/or methods, the present subject matter is not necessarily limited to such specific features or elements as described. Rather, the specific features are disclosed as examples and should not be construed to limit the scope of the present subject matter.

Claims

l/We Claim:

1 . A pouch cell holder assembly (100) comprising : a base plate (102) comprising a first surface (104) and a second surface (106) with a bracket portion (108) extending orthogonally from each corner of the first surface (104) of the base plate (102), wherein the base plate (102) comprises a depression (110) on the first surface (104) with an opening (112) formed within the depression (110); a first cooling plate (114) to be accommodated onto the first surface (104) of the base plate (102); a second cooling plate (118) to be accommodated over the first cooling plate (114) below the bracket portions (108) with a pouch cell (116) sandwiched between the first cooling plate (114) and the second cooling plate (118); and a compression pad (122) to be placed over the second cooling plate (118), wherein the compression pad (122) is to apply a compression force onto the second cooling plate (118) to maintain it in contact with the pouch cell (116) to resist the swelling of the pouch cell (116).

2. The pouch cell holder assembly (100) as claimed in claim 1 , wherein the first cooling plate (114) is removably fixed into the depression (110) formed on the first surface (104) of the base plate (102).

3. The pouch cell holder assembly (100) as claimed in claim 1 , wherein each of the bracket portions (108) comprises a flanged portion (206) extending orthogonally from inner surface of the bracket portions (108).

4. The pouch cell holder assembly (100) as claimed in claim 3, wherein the second cooling plate (118) is floatable from a rest position to a floated position, wherein while floating, the flanged portion (206) present on each of the bracket portions (108) restricts movement of second cooling plate (118) beyond the floated position.

5. The pouch cell holder assembly (100) as claimed in claim 1 , wherein the base plate (102) of pouch cell holder assembly (100) comprises a pair of openings (202) within the depression (110) separated by a connecting stem (204).

6. The pouch cell holder assembly (100) as claimed in claim 5, wherein the pouch cell holder assembly (100) comprises a pair of compression pads.

7. The pouch cell holder assembly (100) as claimed in claim 1 , wherein each of the bracket portions (108) comprises a curved groove (208) on its top surface and the second surface (106) of the base plate (102) comprises a raised platform (210) to be accommodated between the curved grooves (208).

8. The pouch cell holder assembly (100) as claimed in claim 7 , wherein when a plurality of pouch cell holder assemblies are stacked with each other to form a battery pack module (500), a second pouch cell holder assembly is removable fixed onto the bracket portions of a first pouch cell holder assembly with a first compression pad of the first pouch cell holder assembly is accommodated into a second opening of the second pouch cell holder assembly.

9. The pouch cell holder assembly (100) as claimed in claim 7, wherein while stacking, the raised platform (210) present on the second surface (106) of the base plate (102) of the second pouch cell holder assembly are affixed between the curved grooves (208) present on the top surface of the bracket portions (108) of the first pouch cell holder assembly.

10. The pouch cell holder assembly (100) as claimed in claim 1 , wherein the second cooling plate further comprises a temperature sensor (120) to monitor temperature of the pouch cell (116).

11. A battery pack module (500) comprising: a first pouch cell holder assembly (402) comprising: a first base plate (406) comprising a first set of bracket portions (408) extending orthogonally from a top surface from each corner of the first base plate (406), wherein the first base plate (406) comprises a first depression on the top surface with a first opening formed within the depression; and a first compression pad (416) to be placed over the first base plate (406) to resist the swelling of a first pouch cell (412) accommodated within the first pouch cell holder assembly (402); a second pouch cell holder assembly (404) with the first pouch cell holder assembly (402) stacked over it, wherein the second pouch cell holder assembly (404) comprises: a second base plate (418) comprising a second set of bracket portions (420) extending orthogonally from a top surface from each corner of the second base plate (418), wherein the second base plate (418) comprises a second depression on the top surface with a second opening formed within the second depression; a second compression pad (428) to be placed over the second base plate (418) to resist the swelling of a second pouch cell (424) accommodated within the second pouch cell holder assembly (404); wherein while stacking, a bottom surface of the first pouch cell holder assembly (402) is fixed onto the second set of bracket portions (420) of the second pouch cell holder assembly (404), wherein on stacking the first pouch cell holder assembly (402) onto the second pouch cell holder assembly (404), the second compression pad (428) of the second pouch cell holder assembly (404) is accommodated into the first opening of the first base plate (406); wherein while swelling of the second pouch cell (424), the second compression pad (428) get compressed and in response apply the compression force on the second pouch cell 424 to resist swelling of the second pouch cell (424) by enabling a close contact of the second pouch cell (424) with a pair of cooling plates.

12. The battery pack module (500) as claimed in claim 11 , wherein each of the pouch cell holder assembly (402. 404) further comprises a first cooling plate (410, 422) and a second cooling plate (414, 426) to be accommodated onto the top surface of the respective base plate (406, 418), wherein the pouch cells (412, 424) of the corresponding pouch cell holder assembly (402, 404) is accommodated between the first cooling plate (410, 422) and the second cooling plate (414, 426).

13. The battery pack module (500) as claimed in claim 1 1 , wherein the battery pack module (500) comprises a plurality of enclosing plates (502) with a plurality of fastening brackets (504) for enclosing plurality of pouch cell holder assembly and a pair of terminals (506).

14. A battery pack (600) comprising: a plurality of battery pack module (500), wherein each battery pack module (500) comprises: a first pouch cell holder assembly comprising: a first base plate comprising a first set of bracket portions extending orthogonally from a top surface from each corner of the first base plate, wherein the base plate comprises a first depression on the top surface with a first opening formed within the depression; and a first compression pad to be placed over the first base plate to resist the swelling of a a first pouch cell accommodated within the first pouch cell holder assembly; a second pouch cell holder assembly to be stacked onto the first pouch cell holder assembly, wherein the second pouch cell holder assembly comprises: a second base plate comprising a second set of bracket portions extending orthogonally from a top surface from each corner of the second base plate, wherein the second base plate comprises a second depression on the top surface with a second opening formed within the second depression; and a second compression pad to be placed over the second base plate to resist the swelling of a second pouch cell accommodated within the second pouch cell holder assembly; wherein while stacking, a bottom surface of the second pouch cell holder assembly is fixed onto the first set of bracket portions of the first pouch cell holder assembly, wherein on fixing the second cooling assembly onto the first cooling assembly, the first compression pad of the first pouch cell holder assembly is accommodated into the second opening of the second base plate to maintain required pressure onto the first pouch cell; wherein while swelling of the second pouch cell, the second compression pad get compressed and in response apply the compression force on the second pouch cell to resist swelling of the second pouch cell by enabling a close contact of the second pouch cell with a pair of cooling plates.

15. The battery pack (600) as claimed in claim 14, wherein each of the pouch cell holder assembly comprised in each battery pack module (500) further comprises a top cooling plate and a bottom cooling plate to be accommodated onto the top surface of the respective base plate, wherein a pouch cell of the corresponding pouch cell holder assembly is accommodated between the top cooling plate and the bottom cooling plate.