Battery module and, battery pack and vehicle including the same

Abstract

A battery module, a battery pack including the same, and an automobile are disclosed. A battery module according to one embodiment of the present invention comprises: a plurality of battery cells each having an electrode lead; a module case in which the plurality of battery cells are housed; and a busbar member coupled to the plurality of battery cells, wherein an electrical connection portion is formed on the busbar member.

Description

Technology Field

[0001] The present invention relates to a battery module, a battery pack including the same, and an automobile, and more specifically, to a battery module capable of simplifying the structure, a battery pack including the same, and an automobile. Background Technology

[0002] Generally, a secondary battery refers to a battery capable of repeated charging and discharging, such as lithium-ion batteries, lithium-polymer batteries, nickel-cadmium batteries, nickel-hydrogen batteries, and nickel-zinc batteries. The battery cells corresponding to the most basic secondary batteries can provide an output voltage of approximately 2.5V to 4.2V.

[0003] Recently, as these battery cells are applied to devices requiring high output voltage and large charging capacity, such as electric vehicles or Energy Storage Systems (ESS), battery modules configured by connecting multiple battery cells in series, parallel, or a combination of series and parallel, and battery packs configured by connecting these battery modules again in series, parallel, or a combination of series and parallel are widely used.

[0004] Lithium secondary batteries are currently in the spotlight due to their advantages, such as high operating voltage and significantly higher energy density, but because they use organic electrolytes, if the lithium secondary battery is overcharged, it causes overcurrent and overheating, which in severe cases can lead to explosions or fires caused by ignition.

[0005] Various types of secondary batteries may include a battery module in which a plurality of battery cells are stacked and inserted into a module case equipped with a module case capable of protecting the battery cells, and a battery pack containing a plurality of battery modules.

[0006] Conventional battery modules connect the electrode leads of battery cells and busbars by welding, and also provide a separate connecting plate and a separate conductive substrate so that the connecting plate, the conductive substrate, and the busbar are electrically connected.

[0007] However, there are problems such as increased component costs due to the complex connection process and structure, as well as reduced space utilization caused by the space occupied by the connection plate and conductive substrate. The problem to be solved

[0008] Accordingly, the technical problem to be solved by the present invention is to provide a battery module in which a separate connecting plate and a separate conductive substrate are eliminated, thereby simplifying the structure and the manufacturing process, a battery pack including the same, and an automobile.

[0009] In addition, another technical objective of the present invention is to provide a battery module, a battery pack including the same, and an automobile, which can reduce costs through a reduction in manufacturing parts.

[0010] In addition, another technical objective of the present invention is to provide a battery module capable of increasing battery capacity by utilizing the space from which manufacturing components have been removed, a battery pack including the same, and an automobile.

[0011] However, the technical problems that the present invention aims to solve are not limited to those described above, and other unmentioned problems will be clearly understood by those skilled in the art from the description of the invention below. means of solving the problem

[0012] Accordingly, the technical problem to be solved by the present invention may be provided with a battery module comprising: a plurality of battery cells each equipped with an electrode lead; a module case in which the plurality of battery cells are housed; and a busbar member coupled to the plurality of battery cells, wherein an electrical connection portion is formed on the busbar member.

[0013] In one embodiment, the electrical connection may be formed in a line shape inside the busbar member.

[0014] In one embodiment, the busbar member may include: a busbar frame coupled to the module case and having the electrical connection portion formed therein; a busbar coupled to the busbar frame and connected to the electrical connection portion; and a connector connected to the electrical connection portion.

[0015] In one embodiment, the electrical connection part can be directly formed on the busbar frame by a Laser Direct Structuring (LDS) method.

[0016] In one embodiment, the busbar frame may be made of plastic containing metal particles.

[0017] In one embodiment, the metal particles contained in the plastic are activated in a specific area by the energy of the laser, and the patterned electrical connection portion may be formed in the portion where the metal particles are activated.

[0018] In one embodiment, the electrical connection portion may be formed in the shape of a conductive pattern that does not interfere with each other.

[0019] In one embodiment, a coating layer may be formed on the electrical connection portion to protect the electrical connection portion.

[0020] In one embodiment, the apparatus further comprises a temperature sensing member coupled to the busbar frame; and a control unit connected to the temperature sensing member, wherein the temperature sensing member may be connected to the control unit by the electrical connection unit.

[0021] In one embodiment, the temperature sensing member may include: a conductive elastic connection part having elasticity that is electrically connected to the electrical connection part; and a temperature sensor coupled to the conductive elastic connection part to sense the temperature of the battery cell.

[0022] In one embodiment, a cover portion covering the temperature sensor on the upper side of the temperature sensor may be further included.

[0023] In one embodiment, a coupling portion is formed on the busbar frame, and the cover portion can be rotatably coupled to the coupling portion.

[0024] In one embodiment, the conductive elastic connection may include a Flexible Printed Circuit Board (FPCB).

[0025] In one embodiment, the busbar frame has an insertion hole into which the electrode lead is inserted, the busbar is positioned between two of the insertion holes, and the electrical connection can be connected to the busbar on the upper side of the busbar.

[0026] In one embodiment, terminals connected to external terminals are disposed at the left and right ends of the busbar frame, and the electrical connection part can be connected to the terminals.

[0027] In one embodiment, the electrical connection part may be formed with a fusing part configured to be disconnected when an overcurrent flows through the electrical connection part.

[0028] In one embodiment, the fusing part may be formed directly on the busbar frame by a Laser Direct Structuring (LDS) method.

[0029] In one embodiment, the busbar frame has an intermediate connecting portion formed therein that connects the electrical connection portion and the busbar, and the width of the intermediate connecting portion may be formed to be larger than the width of the electrical connection portion.

[0030] Meanwhile, according to another aspect of the present invention, a battery pack comprising at least one of the aforementioned battery modules may be provided, and a vehicle comprising at least one of the aforementioned battery modules may also be provided. Effects of the invention

[0031] The embodiments of the present invention have the effect of simplifying the structure and the manufacturing process by eliminating a separate connecting plate and a separate conductive substrate.

[0032] In addition, another technical objective of the present invention is to achieve the effect of reducing costs through a reduction in manufacturing parts.

[0033] In addition, another technical objective of the present invention is to have the effect of increasing battery capacity by utilizing the space from which manufacturing components have been removed.

[0034] However, the effects obtainable through the present invention are not limited to those described above, and other unmentioned technical effects will be clearly understood by those skilled in the art from the description of the invention below. Brief explanation of the drawing

[0035] The following drawings attached to this specification illustrate preferred embodiments of the present invention and serve to further enhance understanding of the technical concept of the present invention together with the detailed description of the invention provided below; therefore, the present invention should not be interpreted as being limited only to the matters described in such drawings. FIG. 1 is an exploded perspective view of a battery module according to one embodiment of the present invention. FIG. 2 is a drawing illustrating the appearance of electrode leads coupled to a bus bar in a battery module according to one embodiment of the present invention. FIG. 3 is a drawing illustrating a busbar member in a battery module according to one embodiment of the present invention. FIG. 4 is a perspective view of a temperature sensing member in contact with a battery cell in a battery module according to one embodiment of the present invention. FIG. 5 is a perspective view of the temperature sensing member with the cover removed in FIG. 4. FIGS. 6 and 7 are drawings illustrating the process of a temperature sensing member contacting and releasing contact with a battery cell in a battery module according to an embodiment of the present invention. FIG. 8 is a drawing illustrating the formation of a fusing portion in an electrical connection portion of a battery module according to another embodiment of the present invention. Figure 9 is an enlarged view of part A of Figure 8. Figure 10 is a drawing showing the busbar removed from Figure 8. Figure 11 is an enlarged view of part B in Figure 10. FIG. 12 is a schematic diagram showing the configuration of a battery pack including a battery module according to each embodiment of the present invention. FIG. 13 is a drawing illustrating a car including the battery pack of FIG. 12. Specific details for implementing the invention

[0036] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, but should be interpreted in a meaning and concept consistent with the technical spirit of the present invention, based on the principle that the inventor can appropriately define the concept of the terms to best describe his invention. Accordingly, the embodiments described in this specification and the configurations illustrated in the drawings are merely one preferred embodiment of the present invention and do not represent all aspects of the technical spirit of the present invention; therefore, it should be understood that various equivalents and modifications capable of replacing them may exist at the time of filing this application.

[0037] In the drawings, the size of each component or specific part constituting the component is exaggerated, omitted, or schematically depicted for convenience and clarity of explanation. Accordingly, the size of each component does not entirely reflect its actual size. If it is determined that a detailed description of related known functions or configurations could unnecessarily obscure the essence of the invention, such description shall be omitted.

[0038] As used in this specification, the terms "combination" or "connection" include not only cases where one member and another member are directly joined or directly connected, but also cases where one member is indirectly joined or indirectly connected to another member through a connecting member.

[0039] Meanwhile, contents common to parts described in any one embodiment of the present invention may also be applied to other embodiments. For example, contents common to parts described in the first embodiment of the second embodiment may be replaced by the description of the first embodiment described above, and such common contents may also be applied to the second embodiment. Furthermore, contents described in the second embodiment that are applicable to the first embodiment may also be applied to the first embodiment. The same applies to other embodiments.

[0040] FIG. 1 is an exploded perspective view of a battery module according to an embodiment of the present invention, FIG. 2 is a diagram showing an electrode lead coupled to a busbar in a battery module according to an embodiment of the present invention, FIG. 3 is a diagram showing a busbar member in a battery module according to an embodiment of the present invention, FIG. 4 is a perspective view showing a temperature sensing member in contact with a battery cell in a battery module according to an embodiment of the present invention, FIG. 5 is a perspective view showing a cover portion removed from the temperature sensing member in FIG. 4, FIG. 6 and FIG. 7 are diagrams showing the process of a temperature sensing member contacting and releasing contact with a battery cell in a battery module according to an embodiment of the present invention.

[0041] Referring to FIG. 1, a battery module (10) according to one embodiment of the present invention includes a plurality of battery cells (100), a module case (200), and a busbar member (300).

[0042] The types of battery cells (100) may vary. For example, the battery cell (100) may include at least one of a pouch-type battery cell, a cylindrical battery cell, and a prismatic battery cell. However, for convenience of explanation, the following description will focus on the case where the battery cell (100) is a pouch-type battery cell.

[0043] Multiple battery cells (100) can be stacked together. The battery cells (100) can have various structures, and additionally, the multiple battery cells (100) can be stacked in various ways.

[0044] The battery cell (100) may have a structure in which a plurality of unit cells arranged in the order of positive plate-separator-negative plate or bi-cells arranged in the order of positive plate-separator-negative plate-separator-positive plate-separator-negative plate are stacked according to the battery capacity.

[0045] Each battery cell (100) may be provided with an electrode lead (110). The electrode lead (110) may be made of a conductive material and may serve as a type of terminal that is exposed to the outside and connected to an external device. The electrode lead (110) may include a positive electrode lead and a negative electrode lead.

[0046] The positive electrode lead and the negative electrode lead may be positioned in opposite directions with respect to the longitudinal direction of the battery cell (100), or the positive electrode lead and the negative electrode lead may be positioned in the same direction with respect to the longitudinal direction of the battery cell (100).

[0047] Referring to FIG. 2, the electrode lead (110) of the battery cell (100) can be electrically connected to the bus bar (320). Here, an insertion hole (313, see FIG. 3) may be formed in the bus bar frame (310), and in this case, the electrode lead (110) may be configured to be connected to the bus bar (320) after being inserted into the insertion hole (313) of the bus bar frame (310).

[0048] For example, an electrode lead (110) inserted into an insertion hole (313) of a busbar frame (310) is bent and electrically connected to a busbar (320) coupled to the busbar frame (310). Here, the method of coupling the busbar (320) and the electrode lead (110) can be varied, and for example, they can be coupled by laser welding, but are not limited thereto.

[0049] Referring to FIG. 1, a plurality of battery cells (100) are housed in a module case (200). Here, as described above, the plurality of battery cells (100) can be housed in the module case (200) in a stacked form, that is, in the form of a battery cell stack.

[0050] For example, the module case (200) may include an upper module case (210), a lower module case (220), and a side module case (230). In FIG. 1, the lower module case (220) and the side module case (230) are formed integrally so that the cross-section is U-shaped overall, but the shape of the module case (200) is not limited to this, and the lower module case (220) and the side module case (230) may be manufactured in a separated state and then combined.

[0051] And, the module case (200) surrounds the battery cells (100) and thereby protects the battery cells (100) from external vibrations or shocks.

[0052] The module case (200) may include a mica plate formed of mica that has both thermal insulation and heat resistance to prevent the leakage of flames. Here, the mica plate may include not only a flat mica plate but also a shape that combines flat and curved surfaces. However, this is merely one embodiment and is not limited thereto.

[0053] The module case (200) can be formed in a shape corresponding to the shape of a battery cell stack in which a plurality of battery cells (100) are stacked. For example, if the cross-section of the battery cell stack is provided in a rectangular hexahedron shape, the module case (200) can also be provided in a hexahedron shape corresponding to this.

[0054] The module case (200) can be manufactured, for example, by bending a metal plate, thereby forming the module case (200) as a single unit. When the module case (200) is manufactured as a single unit, the joining process becomes simpler and easier. Alternatively, the module case (200) may be provided as a separate unit and joined by welding or the like. However, the material of the module case (200) is not limited to metal.

[0055] When the module case (200) is formed as a single unit or joined by welding, adhesive is unnecessary, so the module case (200) does not separate even if the temperature inside the battery module (10) rises, thereby preventing flames, gas, or high-temperature discharges from being ejected all at once in an undesirable direction.

[0056] Referring to FIG. 1, a busbar member (300) is coupled to a plurality of battery cells (100). The busbar member (300) has the function of connecting the electrode leads (110) of the battery cells (100) to external terminals. Referring to FIG. 2 and FIG. 3 together, an electrical connection part (311) is formed in the busbar member (300). A detailed description of the electrical connection part (311) will be provided later.

[0057] The busbar member (300) may include a busbar frame (310), a busbar (320), and a connector (330).

[0058] The busbar frame (310) is coupled to the module case (200), and an electrical connection part (311) is formed inside.

[0059] The electrical connection part (311) is configured to electrically connect a busbar (320) coupled to a busbar frame (310) and a connector (330) for connecting to an external terminal.

[0060] The electrical connection portion (311) can be formed in a line shape inside the busbar member (300). Here, the electrical connection portion (311) can be formed in the shape of a conductive pattern that does not interfere with each other.

[0061] That is, a conductive pattern can be formed inside the busbar frame (310). Here, for example, an electrical connection part (311) can be formed directly on the busbar frame (310) by a Laser Direct Structuring (LDS) method. However, it is not limited thereto.

[0062] The busbar frame (310) may be made of plastic containing metal particles. Here, the metal particles contained in the plastic are metal particles that react to a laser. When a laser is irradiated onto the plastic containing the metal particles, the metal particles contained in the plastic are activated in a specific area by the energy of the laser. Then, a patterned electrical connection (311) may be formed in the part where the metal particles are activated through plating treatment, etc.

[0063] That is, a conductive circuit pattern can be formed directly inside the busbar frame (310) by the Laser Direct Structuring (LDS) method.

[0064] Accordingly, when a conductive pattern (circuit pattern) is formed directly inside the busbar frame (310), the electrode lead (110) can be electrically connected to an external terminal without a separate connection plate and a separate conductive substrate, thus simplifying the overall structure and the manufacturing process.

[0065] In addition, accordingly, costs can be reduced by reducing the number of manufacturing parts, and additionally, the battery cell (100) can be included in the space where the manufacturing parts were removed, thereby increasing the battery capacity.

[0066] Meanwhile, a coating layer may be formed on the electrical connection part (311), thereby enabling protection of the electrical connection part (311).

[0067] Referring to FIG. 3, an insertion hole (313) may be formed in the busbar frame (310). And, the busbar (320) may be placed between the two insertion holes (313).

[0068] Here, referring to FIG. 2, the electrode lead (110) can be inserted into an insertion hole (313) formed in the busbar frame (310) and coupled to the busbar (320). Also, the electrical connection part (311) can be connected to the busbar (320) on the upper side of the busbar (320) and can also be connected to the connector (330).

[0069] Accordingly, the electrode lead (110) can be connected to the connector (330) through the electrical connection part (311) and can also be connected to an external terminal.

[0070] Meanwhile, terminals (340) connected to external terminals are arranged at the left and right ends of the busbar frame (310), and an electrical connection part (311) can be connected to the terminal (340). That is, the terminal can also be connected to an external terminal through the electrical connection part (311).

[0071] The busbar (320) is coupled to the busbar frame (310) and connected to an electrical connection part (311) formed in the shape of a conductive pattern. The busbar (320) is connected to a connector (330) by the electrical connection part (311) and is electrically connected to an external terminal.

[0072] And, since the electrode lead (110) of the battery cell (100) is connected to the bus bar (320), the electrode lead (110) of the battery cell (100) is connected to the bus bar (320) and connected to the connector (330) through the electrical connection part (311), and can also be electrically connected to an external terminal.

[0073] The connector (330) is connected to an electrical connection part (311) formed in the shape of a conductive pattern and is connected to an external terminal.

[0074] Referring to FIG. 4, the temperature sensing member (400) can be coupled to the busbar frame (310). Also, the temperature sensing member (400) can be connected to the control unit (500).

[0075] Referring to FIG. 5, the temperature sensing member (400) may include a conductive elastic connection part (410) and a temperature sensor (420).

[0076] The conductive elastic connection part (410) of the temperature sensing member (400) is configured to have elasticity and is electrically connected to the electrical connection part (311) as shown in FIG. 3. Here, a temperature sensor (420) can be coupled to the conductive elastic connection part (410).

[0077] And, referring to FIG. 3, the electrical connection part (311) can be connected to the control part (500) by the connector (330). That is, the temperature sensing member (400) can be connected to the control part (500) by the electrical connection part (311).

[0078] The conductive elastic connection part (410) can be configured in various ways, and, for example, can be configured to include a Flexible Printed Circuit Board (FPCB), but is not limited thereto.

[0079] A temperature sensor (420) is coupled to a conductive elastic connection (410) and configured to sense the temperature of a battery cell (100). The method by which the temperature sensor (420) measures the temperature of the battery cell (100) can vary. For example, the conductive elastic connection (410) to which the temperature sensor (420) is coupled may come into direct contact with the battery cell (100) to measure the temperature of the battery cell (100) by heat conduction.

[0080] Alternatively, in a modified embodiment, a conductive elastic connection (410) to which a temperature sensor (420) is attached is spaced apart from the battery cell (100) at a preset distance, and the temperature of the battery cell (100) can be indirectly estimated by measuring the temperature of the air surrounding the battery cell (100). Alternatively, the temperature of the air surrounding the battery cell (100) may be used.

[0081] In this way, the temperature sensed by the temperature sensor (420) is transmitted to the connector (330) by the conductive elastic connection part (410) and to the control part (500) connected to the connector (330). At this time, the conductive elastic connection part (410) can be connected to the connector (330) in the form of a conductive pattern (for example, in the form of a circuit pattern formed inside the bus bar (320).

[0082] Referring to FIGS. 4 and FIGS. 5 together, the cover portion (430) is configured to cover the temperature sensor (420) from the upper side of the temperature sensor (420), thereby protecting the temperature sensor (420).

[0083] Referring to FIGS. 6 and FIGS. 7 together, a connecting portion (312) may be formed on the busbar frame (310), and a cover portion (430) may be rotatably connected to the connecting portion (312). Here, the cover portion (430) may be formed in various shapes and may be rotatably connected to the connecting portion (312) of the busbar frame (310) in a hinge shape, but is not limited thereto.

[0084] And, as described above, since the conductive elastic connection part (410) is capable of elastic movement, the battery cell (100) is housed in the module case (200) of the battery module (10) with the conductive elastic connection part (410) and the cover part (430) positioned together upward as in FIG. 7. Then, as in FIG. 6, the conductive elastic connection part (410) and the cover part (430) can be moved downward together so that the conductive elastic connection part (410) comes into contact with the battery cell (100).

[0085] Of course, the conductive elastic connection part (410) and the cover part (430) can be moved together downward so that the conductive elastic connection part (410) is positioned at a preset distance from the battery cell (100).

[0086] As described above, the temperature sensing member (400) can be connected to the control unit (500) by an electrical connection part (311) formed in the shape of a conductive pattern, so this also has the effect of simplifying the structure and the manufacturing process.

[0087] FIG. 8 is a drawing showing a fusing portion formed in an electrical connection portion of a battery module according to another embodiment of the present invention, and FIG. 9 is an enlarged view of portion A of FIG. 8.

[0088] Referring to FIGS. 8 and 9, the fusing part (315) may be formed in the electrical connection part (311). The fusing part (315) may be formed in any part of the electrical connection part (311) and configured to be disconnected when an overcurrent occurs.

[0089] That is, when an overcurrent flows through the electrical connection part (311), the fusing part (315) is disconnected, thereby protecting various components electrically connected to the electrical connection part (311).

[0090] The fusing portion (315) can be formed in various ways, for example, by a Laser Direct Structuring (LDS) method, and can be formed directly on the busbar frame (310). For example, if the busbar frame (310) is an injection molded product, the fusing portion (315) can be formed directly on the injection molded product.

[0091] The Laser Direct Structuring (LDS) method is replaced by the aforementioned explanation.

[0092] The fusing section (315) can be formed into a pattern fuse by a laser direct structuring method. Here, the pattern fuse refers to a fuse in a pre-patterned shape that is connected to the electrical connection section (311).

[0093] Since the fusing part (315) is formed directly on the busbar frame (310) by the laser direct structuring method, a PCB or FPCB is unnecessary, the number of parts is reduced, and the process is reduced, so there is an effect of reducing costs.

[0094] Figure 10 is a drawing showing the busbar removed from Figure 8, and Figure 11 is an enlarged view of part B in Figure 10.

[0095] Referring to FIG. 10, an intermediate connecting part (314) connecting an electrical connection part (311) and a bus bar (320, see FIG. 8) may be formed in the bus bar frame (310). The intermediate connecting part (314) may be formed in various ways, for example, as in FIG. 11, the width (W1) of the intermediate connecting part (314) may be formed to be larger than the width (W2) of the electrical connection part (311).

[0096] For example, if the electrical connection part (311) is formed in the form of a thin line, the intermediate connection part (314) can be formed to have a larger area than the electrical connection part (311).

[0097] In FIGS. 10 and 11, the intermediate connecting part (314) is formed in a rectangular shape, but the shape of the intermediate connecting part (314) is not limited to this and can be various.

[0098] In this way, if the intermediate connecting part (314) is configured to have a large area, the contact area between the intermediate connecting part (314) and the bus bar (320) increases, so the electrical flow becomes smooth and sensing can be done without noise.

[0099] Meanwhile, the intermediate connecting part (314) can also be applied in the embodiment of FIG. 3.

[0100] FIG. 12 is a schematic diagram showing the configuration of a battery pack including a battery module according to each embodiment of the present invention.

[0101] Referring to FIG. 12, a battery pack (20) according to one embodiment of the present invention may include one or more battery modules (10) according to each embodiment of the present invention described above.

[0102] Additionally, the battery pack (20) may further include a pack case (21) for housing the battery module (10) and various devices for controlling the charging and discharging of the battery cell (100) included in the battery module (10), such as a BMS, a current sensor, a fuse, etc.

[0103] FIG. 13 is a drawing illustrating a car including the battery pack of FIG. 12.

[0104] Referring to FIG. 13, a vehicle (30) according to one embodiment of the present invention may include one or more battery modules (10) according to each embodiment of the present invention or battery packs (20) according to each embodiment of the present invention. Here, the battery pack (20) may include one or more battery modules (10) according to each embodiment of the present invention.

[0105] Here, the above-mentioned automobile (30) includes various automobiles configured to use electricity, such as electric vehicles or hybrid vehicles, for example.

[0106] In this specification, where terms indicating directions such as up, down, left, and right are used, these terms are used merely for convenience of explanation, and it is obvious to those skilled in the art that they may vary depending on the location of the object or the position of the observer.

[0107] Although the present invention has been described above by means of limited embodiments and drawings, the present invention is not limited thereto, and it is obvious that various modifications and variations are possible within the scope of the technical spirit of the present invention and the equivalent scope of the claims set forth below by those skilled in the art to which the present invention pertains. Therefore, the embodiments disclosed above should be considered in an illustrative rather than a restrictive sense. That is, the scope of the true technical spirit of the present invention is indicated in the claims, and all variations within the equivalent scope thereof should be interpreted as being included in the present invention. Explanation of the symbols

[0108] 10: Battery Module 100: Battery cell 110: Electrode lead 200 : Module case 210 : Upper module case 220: Lower module case 230: Side module case 300 : Busbar component 310 : Busbar frame 311: Electrical connection part 312: Joint part 313: Insertion hole 314: Intermediate connector 315 : Fusing Department 320 : Busbar 330 : Connector 340 : Terminal 400: Temperature sensing element 410: Conductive elastic connection part 420: Temperature sensor 430: Cover part 500 : Control unit 20: Battery pack 21 : Pack case 30 : Car

Claims

Claim 1 A battery module comprising: a plurality of battery cells each equipped with an electrode lead; a module case in which the plurality of battery cells are housed; and a busbar member coupled to the plurality of battery cells, wherein an electrical connection portion is formed on the busbar member. Claim 2 A battery module according to claim 1, wherein the electrical connection portion is formed in a line shape inside the busbar member. Claim 3 A battery module according to claim 1, wherein the busbar member comprises: a busbar frame coupled to the module case and having an electrical connection formed therein; a busbar coupled to the busbar frame and connected to the electrical connection; and a connector connected to the electrical connection. Claim 4 A battery module characterized in that, in paragraph 3, the electrical connection portion is directly formed on the busbar frame by a Laser Direct Structuring (LDS) method. Claim 5 A battery module according to claim 4, characterized in that the busbar frame is made of plastic containing metal particles. Claim 6 A battery module according to claim 5, characterized in that the metal particles contained in the plastic are activated in a specific area by the energy of the laser, and the patterned electrical connection is formed in the part where the metal particles are activated. Claim 7 A battery module according to paragraph 3, characterized in that the electrical connection portions are formed in the shape of a conductive pattern that does not interfere with each other. Claim 8 A battery module according to paragraph 3, characterized in that a coating layer is formed on the electrical connection portion to protect the electrical connection portion. Claim 9 A battery module according to paragraph 3, further comprising: a temperature sensing member coupled to the busbar frame; and a control unit connected to the temperature sensing member, wherein the temperature sensing member is connected to the control unit by the electrical connection unit. Claim 10 A battery module according to claim 9, wherein the temperature sensing member comprises: a conductive elastic connection part having elasticity and electrically connected to the electrical connection part; and a temperature sensor coupled to the conductive elastic connection part to sense the temperature of the battery cell. Claim 11 A battery module according to claim 10, further comprising a cover portion covering the temperature sensor on the upper side of the temperature sensor. Claim 12 A battery module according to claim 11, wherein a coupling portion is formed in the busbar frame and the cover portion is rotatably coupled to the coupling portion. Claim 13 A battery module according to claim 10, characterized in that the conductive elastic connection part includes a Flexible Printed Circuit Board (FPCB). Claim 14 A battery module according to paragraph 3, wherein the busbar frame has an insertion hole into which the electrode lead is inserted, the busbar is positioned between two of the insertion holes, and the electrical connection is connected to the busbar on the upper side of the busbar. Claim 15 A battery module characterized in that, in paragraph 3, terminals connected to external terminals are disposed at the left and right ends of the busbar frame, and the electrical connection part is connected to the terminals. Claim 16 A battery module according to claim 1, characterized in that the electrical connection part has a fusing part formed therein configured to be disconnected when an overcurrent flows through the electrical connection part. Claim 17 A battery module according to claim 17, characterized in that the fusing part is formed directly on the busbar frame by a Laser Direct Structuring (LDS) method. Claim 18 A battery module according to paragraph 3, wherein the busbar frame has an intermediate connection portion formed therein that connects the electrical connection portion and the busbar, and the width of the intermediate connection portion is formed to be larger than the width of the electrical connection portion. Claim 19 A battery pack comprising at least one battery module according to any one of claims 1 to 18. Claim 20 An automobile comprising at least one battery module according to any one of claims 1 to 18.

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