Description:FIELD OF THE INVENTION
[0001] The present invention relates to a power unit, more specifically the present application is related to a Printed Circuit Board (PCB) for a power unit.

BACKGROUND
[0002] Battery packs, such as Lithium-ion (Li-ion) battery pack or the like, are used to power components in applications, such as electric vehicles, hybrid vehicles, mobile phones, laptops, medical equipment’s or the like. A battery pack has a plurality of cells in electrical connection with each other. More specifically, a battery pack is an electrical energy storage device configured to supply the stored electrical energy to an external load as and when demanded by the external load. The battery pack employ a plurality of battery cells which are connected either in a series configuration or in a parallel configuration. The connection between the plurality of battery cells is secured through one or more interconnectors which provide an electrical connection.

[0003] A lithium-ion battery is usually constituted of a positive electrode, a negative electrode, an electrolyte, and a separator. As a positive electrode active material to be used for the positive electrode, lithium cobaltate, manganese spinel, or the like are mainly used. Since the positive electrode active material has a high electric resistance, the electric resistance of the positive electrode is decreased by using carbon-based conductive additives. As a binder, for example, styrene-butadiene rubber, fluororubber, synthetic rubber, a polymer such as polyvinylidene fluoride, an acryl resin, or the like are used.

[0004] A negative electrode active material to be used is natural graphite, artificial graphite obtained by thermally treating coal, petroleum pitch or the like at a high temperature, amorphous carbon obtained by thermally treating coal, petroleum pitch coke, acetylene pitch coke or the like, a lithium alloy such as metallic lithium or AlLi, or the like. Further, carbon-based conductive additives are used for a negative electrode in some cases for the purpose of decreasing the resistance.

[0005] Battery pack comprises plurality of cells in electrical connection with each other. During operation, each cell generates heat which is to be dissipated from the battery pack to ensure proper operation of the battery pack without failing. More specifically, the battery pack, such as Lithium-ion (Li-ion) battery pack, have an issue of thermal runaway. For instance, when a cell or an area within the cell or a plurality of cells of a Li-ion battery pack achieves an elevated temperature due to a thermal failure or a mechanical failure or internal or external short circuiting or an electro-chemical abuse a large amount of heat is generated. When the generated heat is larger than the heat dissipation, various side reactions between the components inside the battery pack are induced. This may cause further heat generation and the pressure and the temperature of the battery pack may increase sharply. This may lead to inflammation and/or explosion of the battery pack. This process is referred to as thermal runaway. Accordingly, during operation of the battery pack, to avoid thermal runaway and to ensure proper operation of the battery pack without failing, heat generated by each cell is to be dissipated from the battery pack.

[0006] The current situation presents a significant dependency on battery packs for the functioning of electrical and electronic components. Further, in the pursuit of curbing greenhouse emissions, a significant demand has been put upon the technological development of rechargeable battery packs for the purpose of utility in electric and plug-in hybrid vehicles. The application of rechargeable battery packs involving high power applications raises critical concerns regarding safe and secure operation of the battery pack. Consequently, intense research and development persists in the field of battery pack development which deals with detection and diagnosis of miscellaneous or abnormal functioning of the battery pack.

[0007] In the pursuit of detection and diagnosis of miscellaneous functioning of the battery pack, the battery pack is provided with a Battery Management System (hereinafter referred to as BMS). The BMS monitors the health of the battery pack through battery parameters such as voltage, charging current, temperature and state of charge of the battery cells. Typically, the miscellaneous functionality of the battery pack is manifested in the form of an abnormal rise in temperature in the battery pack. The BMS upon sensing the abnormal temperature rise, ceases the functioning of the entire battery pack in coping with the possibility of thermal runaway occurring in the battery pack.

[0008] In the conventional battery packs, cells are connected in series and parallel configuration depending upon the energy requirement. These cells are connected to each other using interconnectors that are spot welded on each cell terminal therefore helping in carrying the current from each cell. Since, the battery packs is having parallel cells that distribute the current in the entire battery pack, therefore in case of any electrical shock, the cells can malfunction and go into thermal runaway leading to fire in the battery pack as the current would be dumped on the abused cells.

[0009] The techniques known in the art for curbing abnormal functioning of the battery pack results in complete standstill of the functioning of the battery pack and the associated electrical or electronic appliance. While for safety concerns it is acceptable that the entire functioning of the battery pack come to a standstill, a corollary associated cost and time of operation is neglected. Thus, there is a requirement to devise a battery pack which upon detection of abnormal functioning of a cell, isolates that cell from the other cells of the battery pack allowing the other cells of the battery pack continue its operation.

[00010] The above information as disclosed in this background section is only for enhancement of understanding of the background of the disclosure and therefore it may contain information that does not form the prior art that is already known in this country to a person of ordinary skill in the art.

SUMMARY
[00011] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.

[00012] In one of the embodiments of the present application, a Printed Circuit Board (PCB) for a power unit comprising: plurality of first openings, which are configured to expose a first polarity of at least one non-insulated cell of plurality of non-insulated cells. The PCB also comprises plurality of second openings which are configured to expose second polarity of the at least one non-insulated cell of the plurality of non-insulated cells. Further, plurality of first interconnectors is provided within the plurality of first openings to connect with the first polarity of the at least one non-insulated cell with the PCB. Furthermore, plurality of second interconnectors is provided within the plurality of second openings to connect with the second polarity of the at least one non-insulated cell with the PCB.

[00013] In one of the embodiments of the present application, the PCB comprising one or more bidirectional switches. Further, the one or more bidirectional switches are Metal–Oxide–Semiconductor Field-Effect Transistor (MOSFET) switches.

[00014] In one of the embodiments of the present application, the one or more bidirectional switches are connected with the plurality of non-insulated cells in a parallel connection.

[00015] In one of the embodiments of the present application, the PCB comprising plurality of first couplers. Further, the plurality of first couplers is connected with plurality of thermistors.

[00016] In one of the embodiments of the present application, the PCB comprising one or more second couplers. Further, the one or more second couplers connecting the PCB with a Battery Management System (BMS).

[00017] In one of the embodiments of the present application, the PCB is of first polarity wherein second end of the PCB is of second polarity. Further, the second polarity is opposite to the first polarity.

[00018] In one of the embodiments of the present application, the PCB comprising plurality of third openings which are configured to dissipate hot gases from the power unit.

[00019] In one of the embodiments of the present application, the plurality of first interconnectors comprising a first surface which is covering the first polarity of the at least one non-insulated cell of the plurality of non-insulated cells, a second surface which is connected with the PCB board and a third surface which is connecting the first surface and the third surface of the plurality of first interconnectors.

[00020] In one of the embodiments of the present application, the third surface of the plurality of first interconnectors is a fusing region.

[00021] In one of the embodiments of the present application, resistance of the third surface is less than the resistance of the first surface and the second surface.

[00022] In one of the embodiments of the present application, surface area of the third surface is less than the surface area of the first surface and the second surface.

[00023] In one of the embodiments of the present application, the first surface and the second surface are disposed parallelly in different horizontal planes.

[00024] In one of the embodiments of the present application, the first surface is rectangular in shape.

[00025] In one of the embodiments of the present application, the plurality of second interconnector comprising a fourth surface which is covering the second polarity of the at least one non-insulated cell of the plurality of non-insulated cells, a fifth surface which is connected with the PCB board and a sixth surface which is connecting the first surface and the third surface.

[00026] In one of the embodiments of the present application, the sixth surface of the plurality of first interconnectors is a fusing region.

[00027] In one of the embodiments of the present application, resistance of the sixth surface is less than the resistance of the fourth surface and the fifth surface.

[00028] In one of the embodiments of the present application, surface area of the sixth surface is less than the surface area of the fourth surface and the fifth surface.

[00029] In one of the embodiments of the present application, the fourth surface and the fifth surface are disposed parallelly in different horizontal planes.

[00030] In one of the embodiments of the present application, the fourth surface is concave in shape.

[00031] In one of the embodiments of the present application, dimension of fourth surface of the plurality of second interconnectors and the first surface of the plurality of first interconnector is different.

[00032] In one of the embodiments of the present application, the plurality of first interconnectors is connected with other using one or more first bus bars.

[00033] In one of the embodiments of the present application, the plurality of second interconnectors is connected with other using one or more second bus bars.

[00034] In one of the embodiments of the present application, a power unit comprising one or more Printed Circuit Board (PCB) comprising: plurality of first openings which is configured to expose a first polarity of at least one non-insulated cell of plurality of non-insulated cells and plurality of second openings which are configured to expose second polarity of the at least one non-insulated cell of the plurality of non-insulated cells. Further, plurality of first interconnectors is provided within the plurality of first openings to connect with the first polarity of the at least one non-insulated cell with the PCB. Furthermore, plurality of second interconnectors is provided within the plurality of second openings to connect with the second polarity of the at least one non-insulated cell with the PCB.

[00035] In one of the embodiments of the present application, the power unit comprises plurality of conduits wherein the plurality of conduits configured to receive the plurality of non-insulated cells.

[00036] In one of the embodiments of the present application, the plurality of non-insulated cells is in an electrical connection.

[00037] In one of the embodiments of the present application, the power unit comprising a casing top and a casing bottom wherein the casing top and the casing bottom is placed opposite to each other. Further, the casing top and the casing bottom is connected with each other to form casing of the power unit.

[00038] In one of the embodiments of the present application, the casing is made of a thermally conductive material and an electrically insulating material.

[00039] In one of the embodiments of the present application, the power unit corresponds to at least one battery.

[00040] In one of the embodiments of the present application, the power unit comprising one or more bidirectional switches placed over the PCB. Further, the one or more bidirectional switches are connected with the plurality of non-insulated cells in a parallel connection. Furthermore, the one or more bidirectional switches are Metal–Oxide–Semiconductor Field-Effect Transistor (MOSFET) switches.

[00041] In one of the embodiments of the present application, the the power unit comprising plurality of first couplers placed over the PCB and are connected with plurality of thermistors. Further, the plurality of second couplers connecting the PCB with a Battery Management System (BMS).

[00042] In one of the embodiments of the present application, a vehicle comprising one or more power units.

BRIEF DESCRIPTION OF FIGURES:
[00043] The accompanying drawings, which are incorporated herein and constitute part of this specification, illustrate preferred embodiments of the invention, and together with the general description given above and the detailed description given below, serve to explain features of the invention.

[00044] Figure 1 illustrates a side view of a battery pack or a power unit as per one of the embodiments of the present invention.

[00045] Figure 2 illustrates a top perspective view of a Printed Circuit Board (PCB) of the battery pack as per one of the embodiments of the present invention.

[00046] Figure 3 illustrates a perspective view of a plurality of first interconnectors as per one of the embodiments of the present invention.

[00047] Figure 4 illustrates a perspective view of a plurality of second interconnectors as per one of the embodiments of the present invention.

DETAILED DESCRIPTION
[00048] Exemplary embodiments detailing features of a motor in accordance with the present subject matter will be described hereunder with reference to the accompanying drawings. Various aspects of different embodiments of the present invention will become discernible from the following description set out hereunder. Rather, the following description provides a convenient illustration for implementing exemplary embodiments of the present subject matter. Further, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. Additionally, all numerical terms, such as, but not limited to, “first”, “second”, “third”, “primary”, “secondary”, “main” or any other ordinary and/or numerical terms, should also be taken only as identifiers, to assist the reader's understanding of the various elements, embodiments, variations and/or modifications of the present disclosure, and may not create any limitations, particularly as to the order, or preference, of any element, embodiment, variation and/or modification relative to, or over, another element, embodiment, variation and/or modification.

[00049] The following detailed description refers to the accompanying drawings. Wherever possible, the same reference numbers are used in the drawings and the following description to refer to the same or similar elements. While embodiments may be described, modifications, adaptations, and other implementations are possible. For example, substitutions, additions, or modifications may be made to the elements illustrated in the drawings, and the methods described herein may be modified by substituting, reordering, or adding stages to the disclosed methods. Accordingly, the following detailed description does not limit the claimed subject matter. Instead, the proper scope of the claimed subject matter is defined by the appended claims. It should be noted that the description and figures merely illustrate principles of the present subject matter. Various arrangements may be devised that, although not explicitly described or shown herein, encompass the principles of the present subject matter. Moreover, all statements herein reciting principles, aspects, and examples of the present subject matter, as well as specific examples thereof, are intended to encompass equivalents thereof.

[00050] Further, various embodiments disclosed herein are to be taken in the illustrative and explanatory sense and should in no way be construed as limiting of the present disclosure. All joinder references (e.g., attached, affixed, coupled, disposed, etc.) are only used to aid the reader's understanding of the present disclosure, and may not create limitations, particularly as to the position, orientation, or use of the systems and/or methods disclosed herein. Therefore, joinder references, if any, are to be construed broadly. Moreover, such joinder references do not necessarily infer those two elements are directly connected to each other.

[00051] It will also be appreciated that one or more of the elements depicted in the drawings/figures can also be implemented in a more separated or integrated manner, or even removed or rendered as inoperable in certain cases, as is useful in accordance with a particular application. Additionally, any signal hatches in the drawings/figures should be considered only as exemplary, and not limiting, unless otherwise specifically specified.

[00052] The present invention is illustrated with a battery pack. However, a person skilled in the art would appreciate that the present invention is not limited to a battery pack and certain features, aspects and advantages of embodiments of the present invention can be used with other types and forms of energy storage devices or energy storage packs used in conjunction with various types of vehicles such as electric vehicle and plug-in hybrid vehicles as well as other electrical equipment and external electrical loads using a rechargeable energy storage pack. In an embodiment, the electric vehicles, hybrid vehicle, electrical equipment, external electrical load draw electric current from the energy storage pack.

[00053] It is an object of the present subject matter to provide a battery pack configured to isolate a malfunctioning cell without increasing the overall weight and number of components of the battery pack.

[00054] Figure 1 exemplarily illustrates a side perspective view of at least a battery pack 100 with an outer casing, in accordance with embodiments of the present disclosure. Figure 2 illustrates a top perspective view of a Printed Circuit Board (PCB) of the battery pack, in accordance with embodiments of the present disclosure. Figure 1 and Figure 2 shall be discussed together.

[00055] Figure 1 illustrates a power unit 100. The power unit 100 comprises a casing to provide a cover and to protection to the components of the power unit100. Particularly, the casing encloses the plurality of non-insulated cells present inside the power unit 100. In addition to providing cover and protecting components of the power unit 100, the casing may facilitate dissipating the heat away from the power unit 100 to the surroundings. The power unit 100 may be a battery pack, also in the present application the term a battery pack is used herein interchangeably with the term a power unit. Accordingly, in an example, the casing may be made of a thermally conductive and electrically insulating material. The power unit 100 comprises a casing top 102 and a casing bottom 104. The casing top 102 is placed opposite to the casing bottom 104. Further, the casing top 102 and the casing bottom 104 are connected with each other to form the casing of the power unit 100.

[00056] In one of the embodiments of the present application, the battery pack 100 also comprises plurality of heat dissipating fins present on both the casing top 102 and the casing bottom 104 for dissipating heat from inside the battery pack 100 to the surroundings. The casing top 102 and the casing bottom 104 comprises an inner area which is facing inside the battery pack 100 and an outer area which is opposite to the inner area and comprises plurality of heat dissipating fins 106.

[00057] Figure 2 illustrates one of one or more Printed Circuit Board (PCB) 200. The PCB 200 comprising plurality of first openings 210, which are configured to expose a first polarity of at least one non-insulated cell of plurality of non-insulated cells and plurality of second openings 212 which are configured to expose second polarity of the at least one non-insulated cell of the plurality of non-insulated cells. Further, plurality of first interconnectors 300 is provided within the plurality of first openings 210 to connect with the first polarity of the at least one non-insulated cell with the PCB 200. Furthermore, plurality of second interconnectors 400 is provided within the plurality of second openings 212 to connect with the second polarity of the at least one non-insulated cell with the PCB 200.

[00058] The PCB 200 also comprising one or more bidirectional switches 216. The one or more bidirectional switches 216 are such as Metal–Oxide–Semiconductor Field-Effect Transistor (MOSFET) switches or the like. Further, the one or more bidirectional switches 216 are connected with the plurality of non-insulated cells in a parallel connection.

[00059] The PCB 200 also comprising plurality of first couplers 204, which are connected with plurality of thermistors to calculate the temperature of the cells or PCB. Further, the PCB 200 also comprising plurality of second couplers 202 which are connecting the PCB 200 with a Battery Management System (BMS) for assessing and monitoring the state of health and state of charge of the plurality of cells of the battery pack 100. The BMS is used for assessing and monitoring the state of health and state of charge of the plurality of cells of the battery pack 100. Any malfunction of a cell of the battery pack 100 would lead to dumping of current on the malfunctioning cell which would lead to rise in temperature of the battery pack 100. The BMS configured to monitor the state of health and state of charge of the battery pack 100 detects the abnormal rise in temperature and cuts-off or ceases the entire functionality of the battery pack 100 in pursuit of avoidance of thermal runaway in the battery pack 100.

[00060] In one of the embodiments of the present application, one end 206 of the PCB 200 is of first polarity and second end 208 of the PCB 200 is of second polarity and wherein the second polarity is opposite to the first polarity. Further, the PCB 200 also comprising plurality of third openings 214 which are configured to dissipate hot gases from the power unit 100.

[00061] In one of the embodiments of the present application, the hot gases are dissipated from the PCB using the plurality of third openings 214. Further, the battery pack 100 also comprises plurality of heat dissipating fins present on both the casing top 102 and the casing bottom 104 for dissipating heat from inside the battery pack 100 to the surroundings.

[00062] The plurality of first interconnectors 300 comprising a first surface 306 which is covering the first polarity of the at least one non-insulated cell of the plurality of non-insulated cells, a second surface 302 which is connected with the PCB 200 and a third surface 304 which is connecting the first surface 306 and the third surface 304. Further, the third surface 304 of the plurality of first interconnectors 300 is a fusing region. Furthermore, resistance of the third surface 304 is less than the resistance of the first surface 306 and the second surface 302. Moreover, the surface area of the third surface 304 is also less than the surface area of the first surface 306 and the second surface 302.

[00063] In one of the embodiments of the present application, the first surface 306 and the second surface 302 of the plurality of first interconnectors 300 are disposed parallelly in different horizontal planes.

[00064] In one of the embodiments of the present application, the first surface 306 of the plurality of first interconnectors 300 is rectangular in shape. More specifically, the shape of the first surface 306 will depend on the shape of the first polarity of the at least one non-insulated cell of the plurality of non-insulated cells. For example, if the first polarity of the at least one non-insulated cell of the plurality of non-insulated cells is of rectangular shape then the first surface 306 of the plurality of first interconnectors 300 is also rectangular in shape.

[00065] The plurality of second interconnectors 400 comprising a fourth surface 406 which is covering the second polarity of the at least one non-insulated cell of the plurality of non-insulated cells, a fifth surface 402 which is connected with the PCB 200 and a sixth surface 404 which is connecting the fourth surface 406 and the fifth surface 402. Further, the sixth surface 404 of the plurality of second interconnectors 400 is a fusing region. Furthermore, resistance of the sixth surface 404 is less than the resistance of the fourth surface 406 and the fifth surface 402. Moreover, the surface area of the sixth surface 404 is also less than the surface area of the fourth surface 406 and the fifth surface 402.

[00066] In one of the embodiments of the present application, the fourth surface 406 and the fifth surface 402 of the plurality of second interconnectors 400 are disposed parallelly in different horizontal planes.

[00067] In one of the embodiments of the present application, the fourth surface 406 of the plurality of second interconnectors 400 is concave in shape. More specifically, the shape of the fourth surface 406 will depend on the shape of the second polarity of the at least one non-insulated cell of the plurality of non-insulated cells. For example, if the second polarity of the at least one non-insulated cell of the plurality of non-insulated cells is of concave shape then the fourth surface 406 of the plurality of second interconnectors 400 is also concave in shape.

[00068] In one of the embodiments of the present application, the shape of the second surface 302 of the plurality of first interconnectors 300 is substantially same as the shape of the fifth surface 402 of the plurality of second interconnectors 400.

[00069] In one of the embodiments of the present application, the third surface 304 of the plurality of first interconnectors 300 is of invented “I” shape.

[00070] In one of the embodiments of the present application, the sixth surface 404 of the plurality of second interconnectors 400 is of invented “I” shape.

[00071] In one of the embodiments of the present application, the shape of the third surface 304 of the plurality of first interconnectors 300 is substantially same as the shape of the fifth surface 4 sixth surface 404 of the plurality of second interconnectors 400.

[00072] In one of the embodiments of the present application, the dimension of fourth surface 406 of the plurality of second interconnector 400 and the first surface 306 of the plurality of first interconnectors 300 is different. The dimension corresponds to surface area, length, width or diameter or the like depending upon the shape of the fourth surface 406 of the plurality of second interconnector 400 and the first surface 306 of the plurality of first interconnectors 300.

[00073] In one of the embodiments of the present application, the plurality of first interconnectors 300 are connected each other using one or more first bus bars. Further, the plurality of second interconnectors 400 are connected with each other using one or more second bus bars.

[00074] In one of the embodiments of the present application, the one or more PCB 200 of the power unit 100 comprising plurality of first openings 210, which are configured to expose a first polarity of at least one non-insulated cell of plurality of non-insulated cells and plurality of second openings 212 which are configured to expose second polarity of the at least one non-insulated cell of the plurality of non-insulated cells. Further, plurality of first interconnectors 300 is provided within the plurality of first openings 210 to connect with the first polarity of the at least one non-insulated cell with the PCB 200. Furthermore, plurality of second interconnectors 400 is provided within the plurality of second openings 212 to connect with the second polarity of the at least one non-insulated cell with the PCB 200.

[00075] The power unit 100 comprises plurality of conduits which are configured to receive the plurality of non-insulated cells. Further, the plurality of non-insulated cells is in an electrical connection. Furthermore, the power unit corresponds to at least one battery.

[00076] The power unit 100 also comprising one or more bidirectional switches 216. The one or more bidirectional switches 216 are such as Metal–Oxide–Semiconductor Field-Effect Transistor (MOSFET) switches or the like. Further, the one or more bidirectional switches 216 are connected with the plurality of non-insulated cells in a parallel connection in the PCB 200.

[00077] The power unit 100 also comprising plurality of first couplers 204, which are connected with plurality of thermistors to calculate the temperature of the cells or PCB. Further, the PCB 200 also comprising plurality of second couplers 202 which are connecting the PCB 200 with a Battery Management System (BMS) for assessing and monitoring the state of health and state of charge of the plurality of cells of the battery pack 100.

[00078] The plurality of first interconnectors 300 and the plurality of second interconnectors 400 comprises a neck shape the third surface 304 and the sixth surface 404 respectively which is acting as fuse (i.e., allowing current to flow in predetermined limit). In case of any electrical malfunctioning of one cell because of which the cell is not working normally and the current is being dumped on that cell. The neck surface 304, 404 that would be carrying the current would sense that the predefined safe current limit has surpassed and will start giving heat to the neck surface 304, 404 and the moment the neck surface 304, 404 goes beyond the threshold safe current limit the temperature at the neck surface 304, 404 will also go beyond a threshold temperature. This increase in temperature at the neck surface 304, 404 will result in a blow off of the neck surface 304, 404 and that particular cell would be out of the circuit without affecting the adjacent non-insulated cells and reducing the risk of fire hazard in the battery pack 100 and keep the user safe from any mishap.

[00079] In one of the embodiments of the present application, in the PCB 200 half of the plurality of first and second interconnectors 300, 400 from one end is reflow soldered on the PCB 200 and the other half of the plurality of first and second interconnectors 300, 400 are then spot welded on the cell terminals. The neck surface 304, 404 are the legs in the centre joining the first surface 306 with the second surface 302 and the fourth surface 406 with fifth surface 402 respectively. The PCB 200 will have the plurality of first openings 210 and the plurality of second openings 212 that will cover the positive and negative terminals for the plurality of first and second interconnectors 300, 400 respectively to sit on it.

[00080] In one of the embodiments of the present application, the PCB 200 comprises the plurality of first couplers 204 for the plurality of thermistor has been attached on few cells of the plurality of cells and routed on the PCB 200 to record temperature. Further, the one or more bidirectional switches 216 such as Metal–Oxide–Semiconductor Field-Effect Transistor (MOSFET) switches 216 are attached to the plurality of cells connected in parallel, such that in case of current dumping and any electrical abuse these MOSFET switches 216 will blow off and disconnecting the circuits and giving signals to BMS, therefore serving the purpose of active paralleling.

[00081] Accordingly, using the present invention there is no need to use any extra component i.e., electrical fuses connected to PCB boards. Therefore, using the present invention without adding any component fuses are added to the plurality of the cells of the battery pack. The present invention will result in reducing overall weigh and cost of the battery pack without affecting the range/capability of the battery pack. Further, the present invention will also help to reduce the chances of any mishap in the battery pack 100 because of the thermal runaway, accordingly, the battery pack 100 of the present invention are safer to use.

[00082] The battery pack 100 can be used with such as electric vehicles, hybrid vehicles, mobile phones, laptops, medical equipment’s or the like.

[00083] In one of the embodiments of the present application, the vehicle comprising one or more power units 100. Further, the vehicle can be a two-wheeled vehicle, a three wheeled vehicle, a four wheeled vehicle or the like. Furthermore, the vehicle may be a two-wheeler that may be a hybrid electric vehicle (HEV), an electric vehicle (EV), Internal Combustion (IC) engine-driven vehicle, or the like.

[00084] In view of the above, the steps as discussed above are not routine, conventional, or well understood in the art, as the claimed steps enable the following solutions to the existing problems in conventional technologies.

[00085] The above-described embodiments, and particularly any “preferred” embodiments, are possible examples of implementations and merely set forth for a clear understanding of the principles of the invention. It will be apparent to those skilled in the art that changes in form, connection, and detail may be made therein without departing from the spirit and scope of the invention.

[00086] Non-limiting and non-exhaustive embodiments of the invention are described with reference to the following figures, wherein like reference numerals refer to like parts throughout the various views unless otherwise specified. It should be appreciated that the following figures may not be drawn to scale.

[00087] Descriptions of certain details and implementations follow, including a description of the figures, which may depict some or all of the embodiments described below, as well as a discussion of other potential embodiments or implementations of the inventive concepts presented herein. An overview of embodiments of the invention is provided below, followed by a more detailed description with reference to the drawings.

[00088] The foregoing disclosure is not intended to limit the present disclosure to the precise forms or particular fields of use disclosed. As such, it is contemplated that various alternate embodiments and/or modifications to the present disclosure, whether explicitly described or implied herein, are possible in light of the disclosure. Having thus described embodiments of the present disclosure, a person of ordinary skill in the art will recognize that changes may be made in form and detail without departing from the scope of the present disclosure. Thus, the present disclosure is limited only by the claims.

[00089] In the foregoing specification, the disclosure has been described with reference to specific embodiments. However, as one skilled in the art will appreciate, various embodiments disclosed herein can be modified or otherwise implemented in various other ways without departing from the spirit and scope of the disclosure. Accordingly, this description is to be considered as illustrative and is for the purpose of teaching those skilled in the art the manner of making and using various embodiments of the disclosure. It is to be understood that the forms of disclosure herein shown and described are to be taken as representative embodiments. Equivalent elements, materials, processes or steps may be substituted for those representatively illustrated and described herein. Moreover, certain features of the disclosure may be utilized independently of the use of other features, all as would be apparent to one skilled in the art after having the benefit of this description of the disclosure. Expressions such as “including”, “comprising”, “incorporating”, “consisting of”, “have”, “is” used to describe and claim the present disclosure are intended to be construed in a non-exclusive manner, namely allowing for items, components or elements not explicitly described also to be present. Reference to the singular is also to be construed to relate to the plural.
, Claims:We Claim:

1. A Printed Circuit Board (PCB) (200) for a power unit (100), the PCB (200) comprising:
plurality of first openings (210), the plurality of first openings (210) is configured to expose a first polarity of at least one non-insulated cell of plurality of non-insulated cells; and
plurality of second openings (212), the plurality of second openings (212) is configured to expose second polarity of the at least one non-insulated cell of the plurality of non-insulated cells;
wherein plurality of first interconnectors (300) is provided within the plurality of first openings (210) to connect with the first polarity of the at least one non-insulated cell with the PCB (200); and
wherein plurality of second interconnectors (400) is provided within the plurality of second openings (212) to connect with the second polarity of the at least one non-insulated cell with the PCB (200).

2. The PCB (200) as claimed in claim 1, wherein the PCB (200) comprising one or more bidirectional switches (216) wherein the one or more bidirectional switches (216) are Metal–Oxide–Semiconductor Field-Effect Transistor (MOSFET) switches.

3. The PCB (200) as claimed in claim 2, wherein the one or more bidirectional switches (216) are connected with the plurality of non-insulated cells in a parallel connection.

4. The PCB (200) as claimed in claim 1, wherein the PCB (200) comprising plurality of first couplers (204), the plurality of first couplers (204) is connected with plurality of thermistors.

5. The PCB (200) as claimed in claim 1, wherein the PCB (200) comprising plurality of second couplers (202), the one or more second couplers (202) connecting the PCB (200) with a Battery Management System (BMS).

6. The PCB (200) as claimed in claim 1, wherein one end (206) of the PCB (200) is of first polarity and second end (208) of the PCB (200) is of second polarity and wherein the second polarity is opposite to the first polarity.

7. The PCB (200) as claimed in claim 1, wherein the PCB (200) comprising plurality of third openings (214), the plurality of third openings (214) is configured to dissipate hot gases from the power unit (100).

8. The PCB (200) as claimed in claim 1, wherein the plurality of first interconnectors (300) comprising:
a first surface (306), the first surface (306) covering the first polarity of the at least one non-insulated cell of the plurality of non-insulated cells;
a second surface (302), the second surface (302) is connected with the PCB (200); and
a third surface (304), the third surface (304) is connecting the first surface (306) and the third surface (304).

9. The PCB (200) as claimed in claim 8, wherein the third surface (304) of the plurality of first interconnectors (300) is a fusing region.

10. The PCB (200) as claimed in claim 8, wherein resistance of the third surface (304) is less than the resistance of the first surface (306) and the second surface (302).

11. The PCB (200) as claimed in claim 8, wherein surface area of the third surface (304) is less than the surface area of the first surface (306) and the second surface (302).

12. The PCB (200) as claimed in claim 8, wherein the first surface (306) and the second surface (302) are disposed parallelly in different horizontal planes.

13. The PCB (200) as claimed in claim 8, wherein the first surface (306) is rectangular in shape.

14. The PCB (200) as claimed in claim 1, wherein the plurality of second interconnectors (400) comprising:
a fourth surface (406), the fourth surface (406) covering the second polarity of the at least one non-insulated cell of the plurality of non-insulated cells;
a fifth surface (402), the fifth surface (402) is connected with the PCB (200); and
a sixth surface (404), the sixth surface (404) is connecting the fourth surface (406) and the fifth surface (402).

15. The PCB (200) as claimed in claim 14, wherein the sixth surface (404) of the plurality of second interconnectors (400) is a fusing region.

16. The PCB (200) as claimed in claim 14, wherein resistance of the sixth surface (404) is less than the resistance of the fourth surface (406) and the fifth surface (402).

17. The PCB (200) as claimed in claim 14, wherein surface area of the sixth surface (404) is less than the surface area of the fourth surface (406) and the fifth surface (402).

18. The PCB (200) as claimed in claim 13, wherein the fourth surface (406) and the fifth surface (402) are disposed parallelly in different horizontal planes.

19. The PCB (200) as claimed in claim 13, wherein the fourth surface (406) is concave in shape.

20. The PCB (200) as claimed in claim 13, wherein dimension of fourth surface (406) of the plurality of second interconnector (400) and the first surface (306) of the plurality of first interconnectors (300) is different.

21. The PCB (200) as claimed in claim 1, wherein the plurality of first interconnectors (300) are connected with each other using one or more first bus bars.

22. The PCB (200) as claimed in claim 1, wherein the plurality of second interconnectors (400) are connected with each other using one or more second bus bars.

23. A power unit (100), the power unit (100) comprising:
one or more Printed Circuit Board (PCB) (200), the one or more PCB (200) comprising:
plurality of first openings (210), the plurality of first openings (210) is configured to expose a first polarity of at least one non-insulated cell of plurality of non-insulated cells; and
plurality of second openings (212), the plurality of second openings (212) is configured to expose second polarity of the at least one non-insulated cell of the plurality of non-insulated cells;
wherein plurality of first interconnectors (300) is provided within the plurality of first openings (210) to connect with the first polarity of the at least one non-insulated cell with the PCB (200); and
wherein plurality of second interconnectors (400) is provided within the plurality of second openings (212) to connect with the second polarity of the at least one non-insulated cell with the PCB (200).

24. The power unit (100) as claimed in claim 23, wherein the power unit (100) comprises plurality of conduits wherein the plurality of conduits configured to receive the plurality of non-insulated cells.

25. The power unit (100) as claimed in claim 23, wherein the plurality of non-insulated cells are in an electrical connection.

26. The power unit (100) as claimed in claim 23, wherein the power unit (100) comprising a casing top (102) and a casing bottom (104) wherein the casing top (102) and the casing bottom (104) is placed opposite to each other, and
wherein the casing top (102) and the casing bottom (104) is connected with each other to form outer casing of the power unit (100).

27. The power unit (100) as claimed in claim 23, wherein the outer casing is made of a thermally conductive material and an electrically insulating material.

28. The power unit (100) as claimed in claim 23, wherein the power unit (100) corresponds to at least one battery.

29. The power unit (100) as claimed in claim 23, wherein the power unit (100) comprising one or more bidirectional switches (216) placed over the PCB (200), wherein the one or more bidirectional switches (216) are connected with the plurality of non-insulated cells in a parallel connection, wherein the one or more bidirectional switches (216) are Metal–Oxide–Semiconductor Field-Effect Transistor (MOSFET) switches.

30. The power unit (100) as claimed in claim 23, wherein the power unit (100) comprising plurality of first couplers (204) placed over the PCB (200), the plurality of first couplers (204) is connected with plurality of thermistors and plurality of second couplers (202), the plurality of second couplers (202) connecting the PCB (200) with a Battery Management System (BMS).

31. A vehicle, the vehicle comprising one or more power units (100) as claimed in claim 23.