A battery pack and method for assembling a battery pack

Abstract

The present disclosure relates to a battery pack (100) and method (300) assembling a battery pack (100). The battery pack (100) includes a plurality of battery cells (102) coupled to each other. The battery pack (100) further includes a plurality of busbars (104) coupled to the plurality of battery cells. The battery pack (100) further includes a thermal sheet (106) including multiple layers. The thermal sheet (106) is adapted to be spaced between each of the plurality of battery cells (102) such that the one or more battery cells of the plurality of battery cells (102) are wrapped utilizing the thermal sheet (106). Further, the thermal sheet (106) is adapted to house the plurality of battery cells (102). The thermal sheet (106) is adapted to absorb, transport and dissipate heat generated from the plurality of battery cells (102).

Description

A BATTERY PACK AND METHOD FOR ASSEMBLING ABATTERY PACKFIELD OF THE INVENTION

[0001] The present invention relates to battery packs, and more particularly relates to heat management of thermally isolated battery packs.BACKGROUND OF THE INVENTION

[0002] High power density battery packs produce high power output by generating large amounts of heat during charge or discharge cycles and have lesser weight. Conventionally, to dissipate this heat generated by battery packs, passive or active cooling devices are used which results in dead weight addition. For high power density battery packs, weight addition becomes a maj or constraint to achieve high power density.

[0003] Battery pack is an ensemble of multiple of battery cells. Typically, battery cells and hence battery packs, have an optimal temperature range in which they can operate efficiently. To operate battery packs beyond the optimal temperature range, required addition of thermal management systems to ensure safer and optimal battery pack functioning. A thermal management system can be a passive or an active device.

[0004] Passive thermal management devices use conduction or convection method to dissipate the heat. The heat dissipation is performed using high conductivity material heat sinks, heat tubes or various heat sink fin designs to dissipate heat or employing phase change materiel jackets to control temperature spikes. Active thermal management devices dissipate the heat from the battery using external power device. The heat dissipation can be done by different methods like blowing air on heat sink fins by fan, using cold air from refrigeration system or pumping cold water through water jackets. Both of these thermal management systems add substantial dead weight to battery packs thereby resulting in lower power density.1 INCORPORATED BY REFERENCE (RULE 20.6)

[0005] Typically, high power density packs have to deal with higher currents from the individual cells. Busbars are typically used to supply higher currents from individual cells to battery pack output terminal. During higher current flow, thick busbars are used to avoid over heating of busbars which in turn results in heating of individual cells. Usage of bus bars in high power battery packs results in lower power density due to addition of busbar weight and adding further design complexity.

[0006] On the top of above challenges, high power density battery packs uses a casing which is needed to hold the battery pack components together and impart strength to battery pack. This battery pack casing does not participate in enhancing thermal management of battery pack and acts like a dead weight. Accordingly, it is required to provide a high power density battery pack that is portable, lightweight and compact, without compromising for efficiency, heat dissipation, and performance of the battery pack.SUMMARY OF THE INVENTION

[0007] One or more embodiments of the present invention provide a thermally isolated battery pack and a method for assembling the battery pack.

[0008] In one aspect of the invention, the battery pack is provided. The battery pack includes a plurality of battery cells coupled to each other. The battery pack further includes a plurality of busbars coupled to the plurality of battery cells. The plurality of busbars adapted to enable flow of current between the plurality of battery cells. The battery pack further includes a thermal sheet including multiple layers. The thermal sheet is adapted to house the plurality of battery cells. Further, the thermal sheet is adapted to be spaced between each of the plurality of battery cells such that the one or more battery cells of the plurality of cells are wrapped utilizing the thermal sheet. Owing to the wrapping the thermal sheet is adapted to provide a structural rigidity to the battery pack. The thermal sheet is adapted to absorb, transport and dissipate heat generated from the plurality of battery cells.2INCORPORATED BY REFERENCE (RULE 20.6)

[0009] In an embodiment, the multiple layers of the thermal sheet includes at least one of a phase Change Material (PCM), a fibre or cloth or sheet, a resin and an adhesive layer.

[0010] In an embodiment, the PCM is adapted to release or absorb heat at phase transition to provide heating or cooling effect. In an embodiment, the fibre is one of a reinforcing material adapted to provide structural rigidity to the battery pack.

[0011] In an embodiment, the adhesive layer on thermal sheet serves as a binding element between cells to provide structural rigidity to battery pack. In an embodiment, the resin serves as a binding element between the PCM and the fibre.

[0012] In an embodiment, the PCM of the thermal sheet changes phase from a solid to a liquid form, when the battery pack is operated at an ambient temperature higher than a pre-defined threshold temperature range. In an embodiment, the PCM of the thermal sheet changes phase from the liquid to solid form, when the battery pack is operated at the ambient temperature lower than the pre-defined threshold temperature range.

[0013] In an embodiment, the thickness of each of the plurality of busbars is dependent on the thermal sheet.

[0014] In another aspect of the invention, a method for assembling a battery pack is provided. The method includes the step of forming a housing using a thermal sheet to house a plurality of battery cells. The method further includes the step of providing at least one spacing between each of the plurality of battery cells. The method further includes the step of positioning the thermal sheet within the at least one spacing provided between each of the plurality of battery cells to wrap each of the plurality of battery cells, thereby providing a structural rigidity to the battery pack. The thermal sheet is adapted to absorb, transport and dissipate heat generated from the plurality of battery cells. The method further includes coupling a plurality of busbars to the plurality of battery cells to enable flow of current between the plurality of battery cells, subsequent to wrapping each of the plurality of battery cells with the thermal sheet. .3INCORPORATED BY REFERENCE (RULE 20.6)

[0015] Other features and aspects of this invention will be apparent from the following description and the accompanying drawings. The features and advantages described in this summary and in the following detailed description are not all-inclusive, and particularly, many additional features and advantages will be apparent to one of ordinary skill in the relevant art, in view of the drawings, specification, and claims hereof. Moreover, it should be noted that the language used in the specification has been principally selected for readability and instructional purposes, and may not have been selected to delineate or circumscribe the inventive subject matter, resort to the claims being necessary to determine such inventive subject matter.BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated herein, and constitute a part of this disclosure, illustrate exemplary embodiments of the disclosed methods and systems in which like reference numerals refer to the same parts throughout the different drawings. Components in the drawings are not necessarily to scale, emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Some drawings may indicate the components using block diagrams and may not represent the internal circuitry of each component. It will be appreciated by those skilled in the art that disclosure of such drawings includes disclosure of electrical components, electronic components or circuitry commonly used to implement such components.

[0017] FIG. 1 is a structure of a battery pack, according to one or more embodiments of the present invention;

[0018] FIG. 2 is a structure of a thermal sheet of the battery pack of FIG. 1, according to one or more embodiments of the present invention; and

[0019] FIG. 3 is a flow diagram of a method for assembling the battery pack, according to one or more embodiments of the present invention.

[0020] The foregoing shall be more apparent from the following detailed description of the invention.4INCORPORATED BY REFERENCE (RULE 20.6)DETAILED DESCRIPTION OF THE INVENTION

[0021] Some embodiments of the present disclosure, illustrating all its features, will now be discussed in detail. It must also be noted that as used herein and in the appended claims, the singular forms "a", "an" and "the" include plural references unless the context clearly dictates otherwise.

[0022] Various modifications to the embodiment will be readily apparent to those skilled in the art and the generic principles herein may be applied to other embodiments. However, one of ordinary skill in the art will readily recognize that the present disclosure including the definitions listed here below are not intended to be limited to the embodiments illustrated but is to be accorded the widest scope consistent with the principles and features described herein.

[0023] A person of ordinary skill in the art will readily ascertain that the illustrated steps detailed in the figures and here below are set out to explain the exemplary embodiments shown, and it should be anticipated that ongoing technological development will change the manner in which particular functions are performed. These examples are presented herein for purposes of illustration, and not limitation. Further, the boundaries of the functional building blocks have been arbitrarily defined herein for the convenience of the description. Alternative boundaries can be defined so long as the specified functions and relationships thereof are appropriately performed. Alternatives (including equivalents, extensions, variations, deviations, etc., of those described herein) will be apparent to persons skilled in the relevant art(s) based on the teachings contained herein. Such alternatives fall within the scope and spirit of the disclosed embodiments.

[0024] FIG. 1 illustrates a structure of a battery pack 100, according to one or more embodiments of the present invention. In this regard, the battery pack 100 includes a plurality of battery cells 102, a plurality of busbars 104, and a thermal sheet 106.

[0025] As per the illustrated embodiment and for the purpose of description and illustration, the battery pack 100 is one of, but not limited to, alkaline battery, lithium-ion (Li-ion) battery, lead-acid battery, nickel -cadmium (NiCd) battery,5INCORPORATED BY REFERENCE (RULE 20.6)nickel-metal hydride (NiMH) battery, lithium polymer (LiPo) battery, lithium iron phosphate (LiFePO4) battery.

[0026] In an embodiment, the battery pack 100 includes the plurality of battery cells 102 coupled to each other. The each of the plurality of battery cells 102 consists of an anode, a cathode and an electrolyte to produce electric energy. The plurality of battery cells 102 is one of, but not limited to, lithium-ion (Li-ion) cells, lead-acid cells, nickel-metal hydride (NiMH) cells, lithium-polymer (LiPo) cells, solid-state cells. Further, the plurality of battery cells 102 are coupled to each other in at least one of series, parallel, and a combination thereof to provide a desired voltage and capacity to the battery pack 100.

[0027] The battery pack 100 further includes the plurality of busbars 104 coupled to the plurality of battery cells 102. The plurality of busbars 104 facilitates the efficient flow of current between the plurality of battery cells 102. The plurality of busbars 104 is placed over the plurality of battery cells 102 so that each of the multiple apertures of the plurality of busbars 104 is in line with each of the plurality of battery cells 102. The plurality of busbars 104 includes, but not limited to, battery interconnect busbars, terminal busbars, busbar bridges, cooling busbars, voltage tap busbars, isolation busbars. Typically, the plurality of busbars 104 are made up of at least one of copper, aluminum, copper-clad aluminum (CCA), nickel, silver.

[0028] The battery pack 100 further includes the thermal sheet 106 is adapted to be spaced between each of the plurality of battery cells 102 and house the plurality of battery cells 102. More specifically, each of the plurality of battery cells 102 are wrapped utilizing the thermal sheet 106. Further, the thermal sheet 106 can be moulded to take the shape of a casing for holding the plurality of battery cells 102 to provide a structural rigidity to the battery pack 100.

[0029] The thermal sheet 106 is made of multiple layers. The multiple layers of thermal sheet 106 includes at least one of an adhesive layer, a fibre 202, a resin 204, and a Phase Change Material (PCM) 206 (as shown in FIG. 2) coupled to each other to form a single unit. The thermal sheet 106.6 INCORPORATED BY REFERENCE (RULE 20.6)

[0030] In an embodiment, the thickness of each of the plurality of busbars 104 is dependent on the thermal sheet 106. As mentioned earlier, the thermal sheet 106 is wrapped around the each of the plurality of battery cells 102 coupled with plurality of busbars 104. Thus, the excessive heat dissipated from the each of the plurality of battery cells 102 is removed utilizing the thermal sheet 106. The thermal sheet 106 is adapted to absorb, transport and dissipate heat generated from the plurality of battery cells 102.More specifically, due to wrapping of each of the plurality of battery cells 102 using the thermal sheet 106, the heat generated during operation of each of the plurality of battery cells 102 is dissipated to the atmosphere without the need for any additional equipment / devices. Accordingly, the battery pack 100 aids in providing economic significance. Further, as the excessive heat dissipated from the each of the plurality of battery cells 102 is removed utilizing the thermal sheet 106, the thickness of each of the plurality of busbars 104 can be reduced, resulting in reduction of the weight of the battery pack 100. Thickness of busbars 104 can be further reduced by applying thermal sheet 106 on the surface of busbars 104, thereby further reducing weight of busbars and battery pack 100.

[0031] FIG. 2 illustrates a structure of the thermal sheet 106, according to one or more embodiments of the present invention. The thermal sheet 106 is made of multiple layers. The multiple layers of thermal sheet 106 includes at least one of the adhesive layer, the fibre 202, the resin 204, and the Phase Change Material (PCM) 206.

[0032] The adhesive layer of the thermal sheet 106 binds each of the plurality of battery cells 102 with the thermal sheet 106. The adhesive layer provides structural rigidity and thermal interface to the plurality of battery cells 102.

[0033] The fibre 202 of the thermal sheet 106 is one of a reinforcing material adapted to provide structural rigidity to the battery pack 100. The reinforcing material is one of, but not limited to, a carbon fibre, a glass fibre, an aluminum fibre, an aluminium sheet, a copper sheet, and a polyethylene sheet. In one embodiment, the carbon fibre is selected as the reinforcing material. Accordingly, the carbon fibre is adapted to provide strength to the battery pack 100 at the same7INCORPORATED BY REFERENCE (RULE 20.6)time improves thermal conductivity of the battery pack 100. Similarly, in one embodiment, the glass fibre is selected as the reinforcing material. Accordingly, the glass fibre provide strength to the battery pack 100 at the same time reduces thermal conductivity of the battery pack 100.

[0034] The resin 204 of the thermal sheet 106 act as a binding element between the PCM 206 and the fibre 202. The resin 204 provides strength to the thermal sheet 106.

[0035] The PCM 206 of the thermal sheet 106 is adapted to release or absorb energy at phase transition to provide heating or cooling effect. The phase transition refers to a change in the physical state of one or more components of the battery pack 100 during its operation. The PCM 206 of the thermal sheet 106 undergoes a phase transition during absorbing or releasing energy during the charging and discharging processes. These phase transition plays a crucial role in regulating the temperature of the battery pack 100 creating the effect similar to thermal isolation of battery pack from the environment and can have significant impacts on its performance, safety, and lifespan.

[0036] During charging process, electrical energy is converted into chemical energy and alternatively during discharging process, chemical energy is converted into electrical energy, leading to various electrochemical reactions within the battery pack 100. The electrochemical reactions generate heat due to internal resistance and other factors. Owing to the generation of the heat during the electrochemical reactions, the temperature of the battery pack 100 increases. As a result, the PCM 206 undergoes the phase transition from a solid form to a liquid form, absorbing thermal energy in the charging process. The absorption of thermal energy by the PCM 206 helps in regulating the temperature rise within the battery pack 100.

[0037] In an embodiment, when the battery pack 100 is operated at an ambient temperature higher than a predefined threshold temperature range, the PCM 206 of the thermal sheet 106 absorbs heat by changing phase from solid to liquid form. The ambient temperature refers to the temperature of the surrounding environment.8INCORPORATED BY REFERENCE (RULE 20.6)The predefined threshold temperature depends on the battery pack 100 chemistry characteristics and can be varied. Therefore, the latent heat of melting is absorbed by the PCM 206 and maintains temperature of the battery pack 100 for a longer time, enabling better battery operations.

[0038] Alternatively, when the battery pack 100 is operated at an ambient temperature lower than the predefined threshold temperature range, the PCM 206 of the thermal sheet 106 changes phase from liquid to solid form. The latent heat of solidification is released by the PCM 206 and maintains the temperature of the battery pack 100 for a longer time, enabling better battery operations. Thus PCM 206 acts like a thermal barrier between battery and environment, thereby thermally isolating the battery from the environment.

[0039] FIG. 3 is a flow diagram of a method 300 for assembling the battery pack, according to one or more embodiments of the present invention. For the purpose of description, the method 300 is described with the embodiments as illustrated in FIG. 1 and should nowhere be construed as limiting the scope of the present disclosure.

[0040] At step 302, the method 300 includes the step of forming the housing using the thermal sheet 106 to house the plurality of battery cells 102.

[0041] At step 304, the method 300 includes the step of providing the at least one spacing between each of the plurality of battery cells 102.

[0042] At step 306, the method 300 includes the step of positioning the thermal sheet 106 within the at least one spacing provided between each of the plurality of battery cells 102 to wrap each of the plurality of battery cells 102. Thereby providing the structural rigidity to the battery pack 100. Further, the thermal sheet 106 is adapted to absorb, transport and dissipate heat generated from the plurality of battery cells 102.

[0043] At step 308, the method 300 includes the step of coupling the plurality of busbars 104 to the plurality of battery cells 102 to enable flow of current between9 INCORPORATED BY REFERENCE (RULE 20.6)the plurality of battery cells 102, subsequent to wrapping each of the plurality of battery cells 102 with the thermal sheet 106.

[0044] A person of ordinary skill in the art will readily ascertain that the illustrated embodiments and steps in description and drawings (FIG.1-3) are set out to explain the exemplary embodiments shown, and it should be anticipated that ongoing technological development will change the manner in which particular functions are performed. These examples are presented herein for purposes of illustration, and not limitation. Further, the boundaries of the functional building blocks have been arbitrarily defined herein for the convenience of the description. Alternative boundaries can be defined so long as the specified functions and relationships thereof are appropriately performed. Alternatives (including equivalents, extensions, variations, deviations, etc., of those described herein) will be apparent to persons skilled in the relevant art(s) based on the teachings contained herein. Such alternatives fall within the scope and spirit of the disclosed embodiments.

[0045] The present disclosure incorporates technical advancement that the weight of the battery pack is reduced and thermally isolates the battery pack from the atmosphere.

[0046] The present invention offers multiple advantages over the prior art and the above listed are a few examples to emphasize on some of the advantageous features. The listed advantages are to be read in a non-limiting manner.10INCORPORATED BY REFERENCE (RULE 20.6)LIST OF REFERENCE OF NUMERALS

[0047] Battery Pack- 100

[0048] Plurality of battery cells- 102

[0049] Plurality of busbars- 104

[0050] Thermal Sheet- 106

[0051] Fibre- 202

[0052] Resin- 204

[0053] Phase Change Material (PCM)- 20611INCORPORATED BY REFERENCE (RULE 20.6)RECONFIGURABLE BATTERY PACK AND A METHOD THEREOFFIELD OF THE INVENTION

[0001] The present invention relates to battery packs, and more particularly relates to reconfiguration of the battery packs.BACKGROUND OF THE INVENTION

[0002] A typical battery system comprises a large aggregation of individual battery cells. Each cell, despite being part of the same system, can exhibit unique characteristics and behaviors over its operational lifetime. This variability necessitates the development of battery systems that are not only reliable but also fault-tolerant and long-lasting.

[0003] In large-scale battery systems used for energy storage, the battery cells, even from the same manufacturer and batch, exhibit variations in capacity, impedance, and aging characteristics. This variability can lead to imbalance within the battery pack, reducing overall efficiency and lifespan. The large-scale battery systems used for energy storage in the transition to electrification, managing and monitoring a large number of cells is necessary. The battery must handle tasks such as cell balancing, thermal management, and fault detection to ensure reliability and longevity.

[0004] The variability among battery cells within a system stems from factors such as manufacturing variances, aging effects, environmental conditions, and operational usage patterns. These differences can result in uneven charging and discharging rates, varying capacities, and potential failures if not managed effectively. Lithium-ion batteries used in large- scale energy storage systems pose safety concerns due to potential thermal runaway, which can result in fires or explosions if not managed effectively. Robust safety protocols and designs are necessary to mitigate these risks.

[0005] Further, scaling up battery systems involves increasing capacity while ensuring cost-effectiveness. Challenges include improving energy density, reducing material costs, and optimizing manufacturing processes.

[0006] Therefore, there is a need for a reconfigurable battery pack to avoid the aforementioned problems.12ERRONEOUSLY FILED (RULE 20.5bis)SUMMARY OF THE INVENTION

[0007] One or more embodiments of the present disclosure provide a reconfigurable battery pack and a method thereof.

[0008] In one aspect of the present invention, the reconfigurable battery pack is disclosed. The reconfigurable battery pack includes at least one cell string having a positive terminal and a negative terminal, a first primary switch connected in series and a second primary switch connected in parallel to the at least one cell string. The reconfigurable battery pack includes a first set of secondary switches to electrically control a first connection. The first connection is configured to connect the positive terminal of the at least one cell string to each of a phase line. The reconfigurable battery pack further includes a second set of secondary switches to electrically control a second connection. The second connection is configured to connect the negative terminal of the at least one cell string to each of the phase line. The system further includes a third set of secondary switches to electrical control a third connection. The third connection is configured to connect one of an at least one of an nthcell of the at least one cell string to the phase line. The reconfigurable battery pack further includes a controller unit communicably coupled to each of the first and second switch and each of the first, the second and third set of secondary switches. The controller unit communicably coupled to each of the first and second primary switch and each of the first, the second and third set of secondary primary switches. The controller unit configured to control a switch operation of each of the first and second primary switch and each of the first, the second and third set of secondary switches based on operating parameters and control inputs from a master battery pack controller.

[0009] In an embodiment, the at least one cell string includes at least one cell.

[0010] In another embodiment, the first primary switch is configured to aid in in one of allowing and disconnecting transmission of power from at least one of, the at least one cell of the at least one cell string to a second cell of the at least one cell string, and the at least one cell string to a second cell string.

[0011] In yet another embodiment, the second primary switch is configured to aid in bypassing the at least one cell of the at least one cell string.13ERRONEOUSLY FILED (RULE 20.5bis)

[0012] In yet another embodiment, the third connection is configured to balance the at least one cell string.

[0013] In yet another embodiment, the first connection and the second connection are configured to bi-directionally power exchange to external sources via the phase line.

[0014] In yet another embodiment, the operating parameters include voltage, current, and temperature of each of the at least one cell.

[0015] In another aspect of the present invention, the method of reconfiguring the battery pack is disclosed. The method includes the step of coupling a first primary switch in series to at least one cell string of the battery pack. The method includes the steps of coupling a second primary switch in parallel to at least one cell string of the battery pack. The method includes the steps of coupling a first connection from a positive terminal and a second connection from a negative terminal of the at least one cell string to each of a phase line. The method further includes the steps of coupling a third connection to one of an nthcell of the at least one cell string to the phase line. The method further includes the step of coupling a first, a second, and a third set of secondary switches to each of the first, the second and the third connection, communicably coupling each of the first and the second primary switches and the first, the second, and the third set of secondary switches to a controller unit and selectively operating, by the controller unit, each of the first and the second primary switches and the first, the second, and the third set of secondary switches based on operating parameters and control inputs from a master battery pack controller.

[0016] Other features and aspects of this invention will be apparent from the following description and the accompanying drawings. The features and advantages described in this summary and in the following detailed description are not all-inclusive, and particularly, many additional features and advantages will be apparent to one of ordinary skill in the relevant art, in view of the drawings, specification, and claims hereof. Moreover, it should be noted that the language used in the specification has been principally selected for readability and instructional purposes and may not have been selected to delineate or circumscribe the inventive subject matter, resort to the claims being necessary to determine such inventive subject matter.BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated herein, and constitute a part of this disclosure, illustrate exemplary embodiments of the disclosed methods and systems in14ERRONEOUSLY FILED (RULE 20.5bis)which like reference numerals refer to the same parts throughout the different drawings. Components in the drawings are not necessarily to scale, emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Some drawings may indicate the components using block diagrams and may not represent the internal circuitry of each component. It will be appreciated by those skilled in the art that disclosure of such drawings includes disclosure of electrical components, electronic components or circuitry commonly used to implement such components.

[0018] FIG. 1 is an exemplary schematic diagram of a cell level switch arrangement for a reconfigurable battery pack, according to one or more embodiments of the present invention;

[0019] FIG. 2 is an exemplary illustration of the cell level switch arrangement for the reconfigurable battery pack, according to one or more embodiments of the present invention;

[0020] FIG. 3a and FIG. 3b are an exemplary schematic diagram of reconfigurable stack arrangement, according to one or more embodiments of the present invention;

[0021] FIG. 4 is a flow diagram of a method of reconfiguring the battery pack, according to one or more embodiments of the present invention.

[0022] The foregoing shall be more apparent from the following detailed description of the invention.DETAILED DESCRIPTION OF THE INVENTION

[0023] Some embodiments of the present disclosure, illustrating all its features, will now be discussed in detail. It must also be noted that as used herein and in the appended claims, the singular forms "a", "an" and "the" include plural references unless the context clearly dictates otherwise.

[0024] Various modifications to the embodiment will be readily apparent to those skilled in the art and the generic principles herein may be applied to other embodiments. However, one of ordinary skill in the art will readily recognize that the present disclosure including the definitions listed here below are not intended to be limited to the embodiments illustrated but is to be accorded the widest scope consistent with the principles and features described herein.15ERRONEOUSLY FILED (RULE 20.5bis)

[0025] A person of ordinary skill in the art will readily ascertain that the illustrated steps detailed in the figures and here below are set out to explain the exemplary embodiments shown, and it should be anticipated that ongoing technological development will change the manner in which particular functions are performed. These examples are presented herein for purposes of illustration, and not limitation. Further, the boundaries of the functional building blocks have been arbitrarily defined herein for the convenience of the description. Alternative boundaries can be defined so long as the specified functions and relationships thereof are appropriately performed. Alternatives (including equivalents, extensions, variations, deviations, etc., of those described herein) will be apparent to persons skilled in the relevant art(s) based on the teachings contained herein. Such alternatives fall within the scope and spirit of the disclosed embodiments.

[0026] FIG. 1 is an exemplary schematic diagram of a cell level switch arrangement for a reconfigurable battery pack 100, according to one or more embodiments of the present disclosure.

[0027] As per the illustrated embodiment, for the purpose of illustration and explanation, the reconfigurable battery pack 100 includes at least one cell string 105. However, in alternate embodiments, the reconfigurable battery pack 100 includes a plurality of cell strings without deviating from and limiting the scope of the present disclosure. In one embodiment, the at least one cell string 105 includes at least one cell 110. The at least one cell 110 of the at least one cell string 105 is at least one of, but not limited to, a Lithium ion (Li-ion), a Lead acid gel, and Nickel metal hydride. In an alternate embodiment, composition of the at least one cell 110 is lithium or lithium polymer cells (referred to as “lithium”) combined with nickel hydrate battery cells. In alternate embodiments, any suitable battery cell composition may be used, including, but not necessarily limited to, lithium ion, zinc air, zinc oxide, super charged zinc oxide, and fuel cells. In an alternate embodiment, the at least one cell string 105 includes a plurality of cells 110. Each of the plurality of cells 110 is electrically coupled to the each other in one of a series connection, a parallel connection and a combination thereof.

[0028] Further, the at least one cell string 105 includes a positive terminal 105a and a negative terminal 105b. In an embodiment, the at least one cell string 105, hereinafter referred to as the cell string 105, is coupled to an external element 115 via a first connection 120. More specifically, the first connection 120 aids in connecting the positive terminal 105a of the cell string 105 to the external element 115. In one embodiment, the external element 115 is one of,16ERRONEOUSLY FILED (RULE 20.5bis)but not limited to, a single-phase connection, a three-phase connection, a plurality of singlephase connections, and a plurality of three-phase connections. The external element 115 refers to any entities or systems outside the immediate power generation or / and storage setup that one draws power from the system and supplies power to the system. In an embodiment, the external element 115 includes, but not limited to, electrical appliances and devices, power grids and utility systems, renewable energy systems, charging stations, emergency systems, backup power systems, energy management systems.

[0029] The cell string 105 is further coupled to the external element 115 via a second connection 125. More specifically, the second connection 125 aids in connecting the negative terminal 105b of the cell string 105 to the external element 115. Further details pertaining to operation of the first connection 120 and the second connection 125 will be explained in detail in the following figures.

[0030] The cell level switch arrangement of the reconfigurable battery pack 100 further includes a first primary switch 130 and a second primary switch 135. Each of the first and the second primary switch 130, 135 is at least one of, but not limited to, an electrically operated switch and a solenoid operated switch. As per the illustrated embodiment, the first primary switch 130 is connected in series to the cell string 105 and the second primary switch 135 is connected in parallel to the cell string 105. The first primary switch 130 is configured to aid in transmission of power from the at least one cell 110 to a second cell 210. The second primary switch 135 is configured to aid in bypassing the at least one cell 110 of the cell string 105. The first primary switch 120 and the second primary switch 125 are a bidirectional current flow electrical switch controlled by a control signal. Further, in one embodiment, the first primary switch 130 and the second primary switch 135 are an active electrical control device used in combination with electrical components inductors, capacitors and resistors (not shown here) to achieve voltage, temperature or current control function.

[0031] The cell level switch arrangement of the reconfigurable battery pack 100 further includes a third connection 140. In one embodiment, the third connection 140 is a designated terminal, or a connection point used for electrical operations within the reconfigurable battery pack 100. The electrical operations include at least one of, but not limited to, active cell balancing. The active cell balancing involves equalizing charge among each of the at least one cell 110 in the reconfigurable battery pack 100 and thereby enhance performance and longevity.17ERRONEOUSLY FILED (RULE 20.5bis)

[0032] The reconfigurable battery pack 100 further includes a controller unit 145. The controller unit 145 is communicably coupled to each of the first and the second primary switch 130, 135. The controller unit 145 is further communicably coupled to each of the first connection 120, the second connection 125, and the third connection 140. Owing to the coupling, the controller unit 145 is configured to control switching operations of each of the first and the second primary switch 130, 135. In an embodiment, the controller unit 145 is configured to control the switching operations based on the operating parameters and control inputs from a master battery pack controller 335 (as shown in FIG.3b). In an embodiment, the operating parameters include, but are not limited to, voltage, current, and temperature of each of the at least one cell 110.

[0033] In an embodiment, the operating parameters are essential inputs for the controller unit 145 to effectively manage the operation of the first, the second, and third connections 120, 125, 140. By monitoring the voltage, current, and temperature, the controller unit 145 is configured to activate the switches to balance the cell string 105 and ensure optimal performance and longevity of the battery pack 100.

[0034] In an embodiment, the controller unit 145 manages the switching operations within the battery pack 100 and monitors the voltage of the at least one cell 110 within the battery pack 100, providing accurate readings to assess cell condition and performance. In an embodiment, the controller unit 145 monitors current of the at least one cell 110 within the battery pack 100, aids to assess the efficiency and health of the battery pack 110. The controller unit 145 tracks the temperature of the at least one cell 110, necessary for maintaining safe operating conditions and preventing thermal runaway and also measures the current flow at the module level, enabling real-time monitoring of power consumption and distribution.

[0035] The coupling and operation of the controller unit 145 in relation to the first, the second and the third connections 120, 125, 140 will be explained in detail with respect to the following figures.

[0036] FIG. 2 is an exemplary illustration of cell level switch arrangement of the reconfigurable battery pack 100, according to one or more embodiments of the present invention.

[0037] As mentioned earlier, the cell string 105 includes the plurality of cells 110. Accordingly, as per the illustrated embodiment, the cell string 105 includes a first cell 205, the18ERRONEOUSLY FILED (RULE 20.5bis)second cell 210, a third cell 215, and a fourth cell 220. It is to be noted that the cell string 105 includes the first cell 205, the second cell 210, the third cell 215, and the fourth cell 220 only for the purpose of illustration and description and should nowhere be construed as limiting the scope of the present disclosure. It is to be further noted that each of the first cell 205, the second cell 210, the third cell 215, and the fourth cell 220 includes the first primary switch 130 and the second primary switch 135.

[0038] Further, each of the first, the second, the third, and the fourth cell 205, 210, 215, 220 are connected to each other in a series connection. The cell level switch arrangement as illustrated in the FIG. 2 further includes a switch 225 connected adjacent to the positive terminal 105a. The switch 225 is configured to control flow of current from the cell string 105 to a second cell string (not shown) as per requirement.

[0039] The arrangement includes the first connection 120, the second connection 125, and the third connection 140. The first connection 120 aids in connecting the positive terminal 105a of the cell string 105 to the external element 115. Likewise, the second connection 125 aids in connecting the negative terminal 105b of the cell string 105 to the external element 115. In addition, the first connection 120 includes a first set of secondary switches 230 adapted to electrically control the first connection 120. The first set of secondary switches 230 may include one or more switches as per the requirement of the external element 115.

[0040] As per the illustrated embodiment, the external element 115 is a three-phase connection. Accordingly, the first set of secondary switches 230 includes a first switch 230a, a second switch 230b, and a third switch 230c. The first switch 230a aids in one of connecting and disconnecting the cell string 105 to the phase one of the three phase connection. The second switch 230b aids in one of connecting and disconnecting the cell string 105 to the phase two of the three phase connection. The third switch 230c aids in one of connecting and disconnecting the cell string 105 to the phase three of the three phase connection.

[0041] Further, the second connection 125 includes a second set of secondary switches 235 adapted to electrically control the second connection 125. The second set of secondary switches 235 may include one or more switches as per the requirement of the external element 115. As the external element 115 is the three-phase connection, the second set of secondary switches 235 includes a first switch 235a, a second switch 235b, and a third switch 235c. The first switch 235a aids in one of connecting and disconnecting the cell string 105 to the phase one of19ERRONEOUSLY FILED (RULE 20.5bis)the three phase connection. The second switch 235b aids in one of connecting and disconnecting the cell string 105 to the phase two of the three phase connection. The third switch 235c aids in one of connecting and disconnecting the cell string 105 to the phase three of the three phase connection. Further, the first connection 120 and the second connection 125 are configured to bi-directionally power exchange to external sources via the phase line.

[0042] Further, the arrangement includes the third connection 140. As mentioned earlier, the third connection 140 is the designated terminal, or a connection point used for electrical operations, such as active balancing within the reconfigurable battery pack 100. The third connection 140 is configured to connect an at least nthcell of the cell string 105 to the external element 115. As mentioned earlier, the cell string 105 includes the first, the second, third, and the fourth cell 205, 210, 215, 220. In one embodiment, the nthcell of the cell string 105 may be any one of the first, the second, third, and the fourth cell 205, 210, 215, 220. As per the illustrated embodiment, the nthcell is the second cell 210. Accordingly, the third connection 140 connects the second cell 210 to the external element 115, i.e., the three phase connection.

[0043] The third connection 140 includes a third set of secondary switches 240 to electrically control the third connection 140. The third set of secondary switches 240 includes a first switch 240a, and a second switch 240b.

[0044] The first switch 240a aids in one of connection and disconnection the first cell 205 and the second cell 210 to the phase one of the three phase connection. The second switch 240b aids in one of connecting of the third cell 215 and the fourth cell 220 to the phase two of the three phase connection and disconnecting the first cell 205 and the second cell 210 from the phase two of the three phase connection. More specifically, on connection of the first switch 240a and the second switch 240b to the respective phase lines, the first cell 205 and the second cell 210 are connected to each other in series and the third cell 215 and the fourth cell 220 are connected to each other in series. In addition, the series connection of the first cell 205 and the second cell 210 and the series connection of the third cell 215 and the fourth cell 220 are connected to each other in parallel. Accordingly, the third set of switches 240 aid in active balancing of the first, the second, third, and the fourth cell 205, 210, 215, 220.

[0045] The controller unit 145 is configured to be communicably coupled to each of the first primary switch 130 and the second primary switch 135. The controller unit 145 aids electively operating each of the first primary switch 130 and the second primary switch 135 based on the20ERRONEOUSLY FILED (RULE 20.5bis)operating parameters and control inputs from the master battery pack controller 335. Based on elective operation of the first primary switch 130 by the controller unit 145, the first primary switch 130 is configured to aid in one of allowing and disconnecting transmission of power between the at least one cell 110 of the cell string 105 and the second cell of the cell string 105. More specifically, the first primary switch 130 is configured to aid in one of allowing and disconnecting transmission of power between each of the first, the second, the third, and the fourth cell 205, 210, 215, 220. Further, in another embodiment, the first primary switch 130 is configured to aid in in one of allowing and disconnecting transmission of power between the cell string 105 and one or more alternate cell strings.

[0046] Based on elective operation of the second primary switch 135 by the controller unit 145, the second primary switch 135 is configured to aid in bypassing the at least one cell 110 of the cell string 105. More specifically, the second primary switch 135 aids in bypassing at least one of the first, the second, third, and the fourth cell 205, 210, 215, 220 of the cell string 105

[0047] The second primary switch 135 is configured to aid in bypassing at least one cell 105 of the at least one cell string 115. In an embodiment, the first connection and the second connection are configured to transmit power to external sources via the phase line. By doing so, the controller unit 145 is able to selectively reconfigure the battery pack 100 by one of selecting and bypassing at least one of the first, the second, the third, and the fourth cell 205, 210, 215, 220

[0048] The controller unit 145 is further connected to each of the first, the second and the third set of secondary switches 230, 235, 240. The controller unit 145 is configured to selectively control the switching operation of each of the first, the second and the third set of secondary switches 230, 235, 240 based on operating parameters and the control inputs from the master battery pack controller 335. In an embodiment, the operating parameters include, but are not limited to, the voltage, the current, and the temperature of each of the at least one cell 110. Based on the elective control of the switching operation of each of the first and the second set of secondary switches 230, 235, the controller unit 145 aids in one of connecting and disconnecting the cell string 105 from the external element 115. Further based on the selective control of the switching operation of the third set of secondary switches, controller unit 145 aids in balancing the cell string 105 via the third connection 140.21ERRONEOUSLY FILED (RULE 20.5bis)

[0049] FIG. 3a and FIG. 3b is an exemplary schematic diagram of reconfigurable stack arrangement 300, according to one or more embodiments of the present invention.

[0050] The reconfigurable stack arrangement 300 includes a first cell string 305, a second cell string 310, and a third cell string 315 coupled to each other. Each of the first cell string 305, the second cell string 310, and the third cell string 315 are further communicably coupled to a first controller 320, a second controller 325, and a third controller 330, respectively.

[0051] Further, the construction, the arrangement, and functionality of each of the first cell string 305, the second cell string 310, and the third cell string 315 is similar to the construction, the arrangement, and the functionality of the cell string 105 as explained in the above figures. Accordingly, for the sake of brevity, the disclosure for the same will not be repeated.

[0052] Further, as per the embodiment as illustrated in FIG. 3b, the master battery pack controller 335 is communicably coupled to each of the first controller 320, the second controller 325, and the third controller 330.

[0053] In one embodiment, the master battery pack controller 335 includes computer hardware and software. The various hardware capabilities of the master battery pack controller 335 includes but not limited to current, voltage measurement at battery pack level, number of modules stack, phase measurement, electrical power, wired communication, onboard computer with memory, wireless communications.

[0054] The various software capabilities of the master battery pack controller 335 includes, but is not limited to, bi-directional communication with modules, inter connectivity and data communication with cloud, human interface mobile app, cell level modelling to estimate State of Charge (SOC), State of Health (SOH) for each cell. The cell level modeling helps in understanding how each cell contributes to the overall performance and longevity of the battery system.

[0055] FIG. 4 is a flow diagram illustrating a method 400 of reconfiguring the battery pack 100, according to one or more embodiments of the present invention. For the purpose of description, the method 400 is described with the embodiments as illustrated in FIG. 2 and should nowhere be construed as limiting the scope of the present disclosure.22ERRONEOUSLY FILED (RULE 20.5bis)

[0056] At step 405, the method 400 includes the step of coupling the first primary switch 130 in series to at least one cell string 105 of the battery pack 100. At step 410, the method 400 includes the step of coupling the second primary switch 135 in parallel to at least one cell string 115 of the battery pack 100. Each of the first and the second primary switch 130, 135 is at least one of, but not limited to, an electrically operated switch and a solenoid operated switch. The first primary switch 130 is configured to aid in transmission of power from the at least one cell 110 to a second cell 210. The second primary switch 135 is configured to aid in bypassing the at least one cell 110 of the cell string 105.

[0057] At step 415, the method 400 includes the step of coupling the first connection 120 from the positive terminal 105a and the second connection 125 from the negative terminal 105b of the at least one cell string 105 to the external element 115.

[0058] At step 420, the method 400 includes the step of coupling the third connection 140 to one of an nth cell of the at least one cell string 105 to the external element 115. In one embodiment, the third connection 140 is a designated terminal, or a connection point used for electrical operations within the reconfigurable battery pack 100. The electrical operations include at least one of, but not limited to, active cell balancing.

[0059] At step 425, the method 400 includes the step of coupling the first, the second, and the third set of secondary switches 230, 235, and 240 to each of the first, the second and the third connection 120, 125, and 140. Accordingly, the first, the second, and the third set of secondary switches 230, 235, and 240 includes the first switch 230a, 235a, 240a, the second switch 230b, 235b, 240b and the third switch 230c, 235c, 240c. The first switch 230a, 235c, 240a aids in one of connecting and disconnecting of the first cell 205 and the second cell 210 to the phase one of the three phase connection. The second switch 230b, 235b, 240b aids in one of connecting the third cell 215 and the fourth cell 220 to the phase two of the three phase connection and disconnecting the first cell 205 and the second cell 210 from the phase two of the three phase connection. More specifically, on connection of the first switch 240a and the second switch 240b to the respective phase lines, the first cell 205 and the second cell 210 are connected to each other in series and the third cell 215 and the fourth cell 220 are connected to each other in series. In addition, the series connection of the first cell 205 and the second cell 210 and the series connection of the third cell 215 and the fourth cell 220 are connected to each other in parallel. Accordingly, the third set of switches 240 aid in active balancing of the first, the second, third, and the fourth cell 205, 210, 215, 220.23ERRONEOUSLY FILED (RULE 20.5bis)

[0060] At step 430, the method 400 includes the step of communicably coupling each of the first and the second primary switch 125 and the first, the second, and the third set of secondary switches 230, 235, and 240 to the controller unit 145 based on operating parameters and the control inputs from the master battery pack controller 335. In an embodiment, the operating parameters include, but are not limited to, the voltage, the current, and the temperature of each of the at least one cell 110.

[0061] At step 435, the method 400 includes the step of selectively operating by the controller unit each of the first and the second primary switches 125 and the first, the second, and the third set of secondary switches based on operating parameters and control inputs from the master battery pack controller 335. Based on the elective control of the switching operation of each of the first and the second set of secondary switches 230, 235, the controller unit 145 aids in one of connecting and disconnecting the cell string 105 from the external element 115. Further based on the selective control of the switching operation of the third set of secondary switches, controller unit 145 aids in balancing the cell string 105 via the third connection 140.

[0062] A person of ordinary skill in the art will readily ascertain that the illustrated embodiments and steps in description and drawings (FIG.1-4) are set out to explain the exemplary embodiments shown, and it should be anticipated that ongoing technological development will change the manner in which particular functions are performed. These examples are presented herein for purposes of illustration, and not limitation. Further, the boundaries of the functional building blocks have been arbitrarily defined herein for the convenience of the description. Alternative boundaries can be defined so long as the specified functions and relationships thereof are appropriately performed. Alternatives (including equivalents, extensions, variations, deviations, etc., of those described herein) will be apparent to persons skilled in the relevant art(s) based on the teachings contained herein. Such alternatives fall within the scope and spirit of the disclosed embodiments.

[0063] The present disclosure incorporates technical advancement that has focused on developing reconfigurable battery packs, capacitors, and / or energy producing elements such as, but not limited to, solar cell and fuel cell. The battery packs are designed as aggregations of numerous battery cells, responding to the growing prominence of renewable energy sources like solar and the expanding use of stationary batteries to facilitate this shift. Acknowledging the inherent variability among battery cells throughout their operational lifetimes, the innovation lies in creating reconfigurable battery packs that enhance fault tolerance, reliability,24ERRONEOUSLY FILED (RULE 20.5bis)and longevity. By employing modular designs and adaptive configurations, these advancements optimize the performance of battery systems. They dynamically adjust to variations among cells, utilizing advanced management and control strategies to maximize efficiency and lifespan. This approach ensures seamless integration into diverse applications across industries, supporting the broader adoption of battery technology in the electrification era.

[0064] The present invention offers multiple advantages that enable the portable battery packs to allow for greater mobility and flexibility in deploying energy storage solutions. The Field-configurable battery banks allow for flexible adjustment of energy storage capacity to match varying demands. The ensures efficient utilization of resources and cost-effective deployment in dynamic energy environments. The miniaturization and simplified cell balancing techniques can lead to cost savings in manufacturing, maintenance, and operation of battery packs. Multi-functional portable battery packs open up a wide range of applications across various industries and sectors. By facilitating the use of renewable energy sources and reducing reliance on fossil fuels, portable battery packs contribute to environmental sustainability and help mitigate greenhouse gas emissions.

[0065] The present invention offers multiple advantages over the prior art and the above listed are a few examples to emphasize on some of the advantageous features. The listed advantages are to be read in a non-limiting manner.25ERRONEOUSLY FILED (RULE 20.5bis)REFERENCE NUMERALS

[0066] At least one cell string-105

[0067] Positive terminal of the at least one cell string- 105a

[0068] Negative terminal of the at least one cell string- 105b

[0069] At least one cell- 110

[0070] External element- 115

[0071] First connection- 120

[0072] Second connection- 125

[0073] First primary switch- 130

[0074] Second primary switch-135

[0075] Third connection- 140

[0076] Controller unit- 145

[0077] First cell - 205

[0078] Second cell - 210

[0079] Third cell- 215

[0080] Fourth cell-220

[0081] Switch - 225

[0082] First set of secondary switch- 230

[0083] Second set of secondary switch- 235

[0084] Third set of secondary switch- 240

[0085] First switch- 230a, 235 a, 240a

[0086] Second switch- 230b, 235b, 240b26ERRONEOUSLY FILED (RULE 20.5bis)

[0087] Third switch- 230c, 235 c, 240c

[0088] First cell string-305

[0089] Second cell string-310

[0090] Third cell string- 315

[0091] First controller- 320

[0092] Second controller-325

[0093] Third controller- 330

[0094] Master battery pack controller-33527ERRONEOUSLY FILED (RULE 20.5bis)

Claims

CLAIMSWe Claim:

1. A battery pack (100) comprising: a plurality of battery cells (102) coupled to each other; a plurality of busbars (104) coupled to the plurality of battery cells (102), the plurality of busbars (104) adapted to enable flow of current between the plurality of battery cells (102); and a thermal sheet (106) including multiple layers, the thermal sheet (106) adapted to: house the plurality of battery cells (102); and wherein the thermal sheet (106) is adapted to be spaced between each of the plurality of battery cells (102) such that the one or more battery cells of the plurality of battery cells (102) are wrapped utilizing the thermal sheet (106), wherein owing to the wrapping the thermal sheet (106) is adapted to provide a structural rigidity to the battery pack (100); wherein the thermal sheet (106) is adapted to absorb, transport and dissipate heat generated from the plurality of battery cells (102) as well as provide structural rigidity.

2. The battery pack (100) as claimed in claim 1, wherein the multiple layers of the thermal sheet (102) include at least one of, a Phase Change Material (PCM) (206), a fibre or cloth or sheet (202), a resin (204) and an adhesive layer.

3. The battery pack (100) as claimed in claim 2, wherein the PCM (206) is adapted to release or absorb energy at phase transition to provide heating or cooling effect.

4. The battery pack (100) as claimed in claim 2, wherein the fibre (202) is one of a reinforcing material adapted to provide structural rigidity to fibre the battery pack (100).28INCORPORATED BY REFERENCE (RULE 20.6)5. The battery pack (100) as claimed in claim 2, wherein the adhesive layer on thermal sheet serves as a binding element between cells to provide structural rigidity to battery pack (100).

6. The battery pack (100) as claimed in claim 2, wherein the resin serves as a binding element between the PCM (206) and the fibre (202).

7. The battery pack (100) as claimed in claim 1, wherein the PCM (206) of the thermal sheet (106), changes phase from a solid to a liquid form when the battery pack (100) is operated at an ambient temperature higher than a predefined threshold temperature range.

8. The battery pack (100) as claimed in claim 1, wherein the PCM (206) of the thermal sheet (106) changes phase from the liquid to solid form, when the battery pack (100) is operated at the ambient temperature lower than the predefined threshold temperature range.

9. The battery pack (100) as claimed in claim 1, wherein the thickness of each of the plurality of busbars (104) is dependent on the thermal sheet (106).

10. A method (300) for assembling a battery pack (100), the method (300) comprising the steps of forming a housing using a thermal sheet (106) to house a plurality of battery cells (102); providing at least one spacing between each of the plurality of battery cells (102); positioning the thermal sheet within the at least one spacing provided between each of the plurality of battery cells (102) to wrap each of the plurality of battery cells (102), thereby providing a structural rigidity to the battery pack (100), wherein the thermal sheet (106) is adapted to absorb, transport and dissipate heat generated from the plurality of battery cells (102); and29INCORPORATED BY REFERENCE (RULE 20.6)coupling a plurality of busbars (104) to the plurality of battery cells (102), to enable flow of current between the plurality of battery cells (102), subsequent to wrapping each of the plurality of battery cells (102) with the thermal sheet (106).30INCORPORATED BY REFERENCE (RULE 20.6)CLAIMS:We Claim:

1. A reconfigurable battery pack (100), the battery pack (100) comprising: at least one cell string (105) having a positive terminal (105a) and a negative terminal (105b); a first primary switch (130) connected in series and a second primary switch (135) connected in parallel to the at least one cell string (105); a first set of secondary switches (230) to electrically control a first connection (120), the first connection (120) connecting the positive terminal (105a) of the at least one cell string (105) to each of a phase line; a second set of secondary switches (235) to electrically control a second connection (125), the second connection (125) connecting the negative terminal (105b) of the at least one cell string (105) to each of the phase line; a third set of secondary switches (240) to electrical control a third connection (140), the third connection (140) connecting an at least one of an nthcell of the at least one cell string (105) to the phase line; and a controller unit (145) communicably coupled to each of the first and second primary switch (130, 135) and each of the first, the second and third set of secondary primary switches (230, 235, 240), the controller unit (145) configured to control a switch operation of each of the first and second primary switch (130, 135) and each of the first, the second and third set of secondary switches (230, 235, 240) based on operating parameters and control inputs from a master battery pack controller (335).

2. The battery pack (100) as claimed in claim 1, wherein the at least one cell string (105) comprises at least one cell (110).

3. The battery pack (100) as claimed in claim 1, wherein the first primary switch (130) is configured to aid in in one of allowing and disconnecting transmission of power from at least one of, the at least one cell (110) of the at least one cell string (105) to a second cell (210) of the at least one cell string (105), and the at least one cell string (105) to a second cell string (310).31ERRONEOUSLY FILED (RULE 20.5bis)4. The battery pack (100) as claimed in claim 1, wherein the second primary switch (135) is configured to aid in bypassing the at least one cell (110) of the at least one cell string (105).

5. The battery pack (100) as claimed in claim 1, wherein the third connection (140) is configured to balance the at least one cell string (105).

6. The battery pack (100) as claimed in claim 1, wherein the first connection (120) and the second connection (125) are configured to bi-directionally power exchange to external sources via the phase line.

7. The battery pack (100) as claimed in claim 1, wherein the operating parameters include, at least one of, but not limited to, voltage, current, and temperature of each of the at least one cell (110).

8. A method (400) of reconfiguring a battery pack (100), the method (400) comprising the steps of coupling a first primary switch (130) in series to at least one cell string (105) of the battery pack (100); coupling a second primary switch (135) in parallel to at least one cell string (105) of the battery pack (100); coupling a first connection (120) from a positive terminal (105a) and a second connection (125) from a negative terminal (105b) of the at least one cell string (105) to each of a phase line; coupling a third connection (140) to one of an nthcell of the at least one cell string (105) to the phase line; coupling a first, a second, and a third set of secondary switches (230, 235, 240) to each of the first, the second and the third connection (120, 125, 140); communicably coupling each of the first and the second primary switches (130, 135) and the first, the second, and the third set of secondary switches (230, 235, 240) to a controller unit (145); and selectively operating, by the controller unit (145), each of the first and the second primary switches (130, 135) and the first, the second, and the third set of secondary32ERRONEOUSLY FILED (RULE 20.5bis)switches (230, 235, 240) based on operating parameters and control inputs from a master battery pack controller (335).

9. The method as claimed in claim 8, wherein the nthcell is at least one cell (110) of the at least one cell string (105), wherein the third connection (140) is coupled to the at least one cell string (105) for balancing the at least one cell string (105).

10. The method as claimed in claim 8, wherein the operating parameters includes voltage current and temperature of each of the at least one cell (105) and control inputs from the master battery pack controller (335).33ERRONEOUSLY FILED (RULE 20.5bis)

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