Battery module having improved structure and battery pack including same

Abstract

The present invention relates to a battery module having an improved structure and a battery pack including same and, more specifically, to a battery module having an improved structure and a battery pack including same, wherein the battery module comprises: a plurality of cylindrical battery cells; a module case for accommodating the cylindrical battery cells; a PCB assembly located above the cylindrical battery cells; and a connection part electrically connecting the cylindrical battery cells and the PCB assembly. The PCB assembly includes a PCB body plate and a first sensing pattern portion provided on one surface of the PCB body plate.

Description

Battery module with improved structure and battery pack including same

[0001] This application claims the benefit of priority to Korean Patent Application No. 2023-0160425, filed November 20, 2023, and Korean Patent Application No. 2024-0125583, filed September 13, 2024, the entire contents of which are incorporated herein by reference.

[0002] The present invention relates to a battery module having an improved structure and a battery pack including the same, and more particularly, to a battery module having an improved structure, which improves manufacturing efficiency during the manufacture of the battery module, and a battery pack including the same.

[0003] As technological development and demand for mobile devices increase, rechargeable secondary batteries are increasingly being used as energy sources for a variety of mobile devices. Secondary batteries are also attracting attention as an energy source for electric and hybrid electric vehicles, offering an alternative to conventional gasoline and diesel vehicles that rely on fossil fuels.

[0004] Secondary batteries are classified into cylindrical and prismatic batteries, in which the electrode assembly is built into a cylindrical or prismatic metal can, and pouch-type batteries, in which the electrode assembly is built into a pouch-type case made of aluminum laminate sheet, depending on the shape of the battery case.

[0005] These secondary batteries have a complex structure and require multiple processes during manufacturing, which leads to problems such as long manufacturing times and high manufacturing costs.

[0006] Figure 1 is an exploded perspective view of a battery module according to the prior art.

[0007] As illustrated in FIG. 1, the battery module comprises a plurality of cylindrical battery cells (10), a module housing (20) that accommodates the plurality of cylindrical battery cells (10), and a bus bar (30, 40) that electrically connects the accommodated cylindrical battery cells (10).

[0008] The battery module according to this prior art has a problem in that a portion of the bus bar (30, 40) is provided to contact the cylindrical battery cell (10) with a narrow area, and additional connecting members such as a harness and a connecting line are required to connect to a sensing device to sense the voltage and current of the stored cylindrical battery cell (10), which increases the manufacturing cost.

[0009] In addition, there is a problem that manufacturing time is increased because processes such as soldering are performed to connect these connection lines, and the volume occupied by the connection lines is increased, resulting in a decrease in energy density.

[0010] (Prior art literature)

[0011] (Patent Document 1) Korean Patent Publication No. 2019-0142581

[0012] In order to solve the above problems, the present invention aims to provide a battery module having an improved structure that can shorten manufacturing time and reduce manufacturing cost by simplifying the structure of some of the components of the battery module, and a battery pack including the same.

[0013] In addition, the present invention aims to provide a battery module having an improved structure that can improve energy density by minimizing volume increase through structural simplification of the battery module, and a battery pack including the same.

[0014] In order to solve the above-described problems, a battery module according to the present invention comprises a plurality of cylindrical battery cells (100), a module case (200) for accommodating the cylindrical battery cells (100), a PCB assembly (300) positioned on the upper portion of the cylindrical battery cells (100), and a connection portion (400) for electrically connecting the cylindrical battery cells (100) and the PCB assembly (300), wherein the PCB assembly (300) comprises a PCB body plate (310) and a first sensing pattern portion (320) provided on one surface of the PCB body plate (310).

[0015] In addition, in the battery module according to the present invention, the PCB assembly (310) is characterized in that an opening (311) is formed in a portion corresponding to the upper surface of the cylindrical battery cell (100).

[0016] In addition, in the battery module according to the present invention, the opening (311) is characterized by having an area that exposes only a portion of the upper surface of the cylindrical battery cell (100).

[0017] In addition, in the battery module according to the present invention, the cylindrical battery cell (100) and the PCB assembly (300) are positioned so that a portion of the vertical extension line overlaps.

[0018] In addition, in the battery module according to the present invention, the first sensing pattern section (320) is characterized in that a voltage sensing pattern for sensing the voltage of the cylindrical battery cell (100) is formed.

[0019] In addition, in the battery module according to the present invention, the first sensing pattern portion (320) is characterized in that a current sensing pattern for sensing the current of the cylindrical battery cell (100) is formed.

[0020] In addition, in the battery module according to the present invention, the first sensing pattern portion (320) is characterized in that it is provided within the area of ​​the PCB body plate (310).

[0021] In addition, in the battery module according to the present invention, the PCB body plate (310) and the first sensing pattern portion are characterized in that they are configured as an integral body.

[0022] In addition, in the battery module according to the present invention, the connecting portion (400) is characterized in that it is a wire.

[0023] In addition, in the battery module according to the present invention, a second sensing pattern portion is further provided on one side of the first sensing pattern portion.

[0024] In addition, in the battery module according to the present invention, the PCB body plate, the first sensing pattern portion, and the second sensing pattern portion are characterized in that they are configured as an integral unit.

[0025] Additionally, the present invention may be a battery pack including the battery module described above.

[0026] Additionally, the present invention may be a device equipped with the battery pack described above.

[0027] According to the battery module having an improved structure according to the present invention and the battery pack including the same, since the PCB assembly is provided with a first sensing pattern portion, the process of electrically connecting the PCB and a sensor for sensing voltage, etc. in the existing prior art can be omitted, thereby providing the advantage of reducing the manufacturing time.

[0028] In addition, according to the battery module and battery pack including the same according to the present invention, there is an advantage in that the PCB assembly is formed to partially overlap the battery cells housed in the module case along a vertical extension line, thereby preventing the battery cells from vertically deviating.

[0029] Figure 1 is an exploded perspective view showing a battery module according to the prior art.

[0030] Figure 2 is a perspective view showing a battery module according to a preferred first embodiment of the present invention.

[0031] Figure 3 is an exploded perspective view showing a battery module according to a preferred first embodiment of the present invention.

[0032] Figure 4 is a vertical cross-sectional view of a battery module according to a preferred first embodiment of the present invention.

[0033] Figure 5 is an exploded perspective view showing a battery module according to a second preferred embodiment of the present invention.

[0034] Figure 6 is a vertical cross-sectional view of a battery module according to a second preferred embodiment of the present invention.

[0035] In this application, the terms “includes,” “has,” or “comprises” are intended to specify the presence of a feature, number, step, component, part, or combination thereof described in the specification, but should be understood not to preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0036] Additionally, the same drawing reference numerals are used for parts with similar functions and actions throughout the drawings. Throughout the specification, when a part is said to be connected to another part, this includes not only direct connections but also indirect connections with other elements intervening. Furthermore, inclusion of a component does not exclude other components unless specifically stated otherwise, but rather implies the inclusion of additional components.

[0037] Hereinafter, a battery module having an improved structure according to the present invention and a battery pack including the same will be described with reference to the attached drawings.

[0038] FIG. 2 is a perspective view showing a battery module according to a preferred first embodiment of the present invention, FIG. 3 is an exploded perspective view showing a battery module according to a preferred first embodiment of the present invention, and FIG. 4 is a vertical cross-sectional view of a battery module according to a preferred first embodiment of the present invention.

[0039] As shown in FIGS. 2 to 4, the battery module according to the present invention is configured to include a cylindrical battery cell (100), a module case (200), a PCB assembly (300), and a connecting portion (400).

[0040] First, the cylindrical battery cell (100) is configured to include an electrode assembly, a cap assembly, and a cylindrical battery case for storing them.

[0041] Regarding the electrode assembly, the electrode assembly is a jelly-roll type electrode assembly in which a separator is interposed between long sheet-shaped positive and negative electrodes and then rolled up.

[0042] The positive electrode is composed of a positive electrode current collector and a positive electrode active material applied to the upper and lower surfaces of the positive electrode current collector.

[0043] The positive electrode current collector can generally have a thickness of 3 to 500 μm. There are no particular limitations on the material as long as it has high conductivity and does not cause chemical changes in the battery. For example, stainless steel, aluminum, nickel, titanium, calcined carbon, or aluminum or stainless steel surface-treated with carbon, nickel, titanium, silver, etc. can be used. In addition, in order to increase the adhesive strength of the positive electrode active material, the surface can be formed with fine irregularities, or various shapes such as films, sheets, foils, nets, porous bodies, foams, and non-woven bodies are possible.

[0044] The cathode active material is a layered compound such as lithium cobalt oxide (LiCoO2), lithium nickel oxide (LiNiO2), or a compound substituted with a transition metal of higher order; chemical formula Li 1+x Mn 2-xLithium manganese oxides such as O4 (where x is 0 to 0.33), LiMnO3, LiMn2O3, LiMnO2; lithium copper oxide (Li2CuO2); vanadium oxides such as LiV3O8, V2O5, Cu2V2O7; chemical formula LiNi 1-x M x Ni-site type lithium nickel oxide represented by O2 (where M = Co, Mn, Al, Cu, Fe, Mg, B or Ga and x = 0.01 to 0.3); chemical formula LiMn 2-x M x Lithium manganese complex oxides represented by O2 (where M = Co, Ni, Fe, Cr, Zn, or Ta, and x = 0.01 to 0.1) or Li2Mn3MO8 (where M = Fe, Co, Ni, Cu, or Zn); LiMn2O4 in which some of the Li in the chemical formula is replaced by an alkaline earth metal ion; disulfide compounds; Fe2(MoO4)3, LiNi x Mn 2-x O4(0.01 ≤ x≤ 0.6) etc. can be used.

[0045] Meanwhile, the positive electrode active material may be mixed with a conductive agent and a binder, and fillers may be added as needed.

[0046] The conductive agent is typically added in an amount of 1 to 50 wt% based on the total weight of the mixture including the positive electrode active material. The conductive agent is not particularly limited as long as it has conductivity and does not cause a chemical change in the battery. For example, graphite such as natural graphite or artificial graphite; carbon black such as carbon black, acetylene black, Ketjen black, channel black, furnace black, lamp black, summer black; conductive fibers such as carbon fiber or metal fiber; metal powders such as fluorocarbon, aluminum, and nickel powder; conductive whiskey such as zinc oxide or potassium titanate; conductive metal oxides such as titanium oxide; and conductive materials such as polyphenylene derivatives can be used.

[0047] A binder is a component that assists in the bonding of the positive electrode active material and the conductive material and the bonding to the current collector, and is typically added in an amount of 1 to 50 wt% based on the total weight of the mixture including the positive electrode active material. Examples of such binders include polyvinylidene fluoride, polyvinyl alcohol, carboxymethyl cellulose (CMC), starch, hydroxypropyl cellulose, regenerated cellulose, polyvinylpyrrolidone, tetrafluoroethylene, polyethylene, polypropylene, ethylene-propylene-diene terpolymer (EPDM), sulfonated EPDM, styrene butylene rubber, fluororubber, and various copolymers.

[0048] Meanwhile, the positive electrode tab, which is extended upwards by a certain length after being connected to the positive electrode's non-conductive portion (not shown), is electrically connected to the cap assembly.

[0049] The negative electrode is composed of a negative electrode current collector and a negative electrode active material applied to the lower and upper surfaces of the negative electrode current collector.

[0050] The negative electrode current collector is typically made to have a thickness of 3 to 500 μm. There are no particular limitations on the negative electrode current collector as long as it is conductive and does not cause chemical changes in the battery. For example, copper, stainless steel, aluminum, nickel, titanium, calcined carbon, copper or stainless steel surface-treated with carbon, nickel, charcoal, silver, etc., aluminum-cadmium alloy, etc. can be used.

[0051] In addition, the bonding strength of the negative electrode active material can be strengthened by forming fine irregularities on the surface, and it can be used in various forms such as films, sheets, foils, nets, porous bodies, foams, and non-woven fabrics.

[0052] Examples of negative active materials include carbon such as non-graphitizable carbon and graphitic carbon; Li x Fe2O3(0≤x≤1), Li x WO2(0≤x≤1), Sn x Me 1-x Me' y O z(Me: Mn, Fe, Pb, Ge; Me': Al, B, P, Si, elements of group 1, 2, and 3 of the periodic table, halogens; 0 <x≤1; 1≤y≤3; 1≤z≤8) 등의 금속 복합 산화물; 리튬 금속; 리튬 합금; 규소계 합금; 주석계 합금; SnO, SnO2, PbO, PbO2, Pb2O3, Pb3O4, Sb2O3, Sb2O4, Sb2O5, GeO, GeO2, Bi2O3, Bi2O4, Bi2O5등의 금속 산화물; 폴리아세틸렌 등의 도전성 고분자; Li-Co-Ni계 재료; Si, SiO, SiO2단독 또는 이들의 혼합물인 Si계 등을 사용할 수 있으나, 이들만으로 한정되는 것은 아니다.

[0053] Of course, a conductive material and a binder can be additionally mixed with the negative electrode active material and coated on the negative electrode current collector.

[0054] Conductive agents are components for further improving the conductivity of the negative electrode active material, and may be used in a certain ratio, including carbon black such as acetylene black, Ketjen black, channel black, furnace black, lamp black, and thermal black; conductive fibers such as carbon fibers or metal fibers; metal powders such as fluorinated carbon, aluminum, and nickel powders; conductive whiskies such as zinc oxide and potassium titanate; conductive metal oxides such as titanium oxide; and conductive materials such as polyphenylene derivatives.

[0055] The binder is a component that helps in the binding of the negative electrode active material and the conductive material and the binding to the current collector, and may include at least one selected from the group consisting of styrene butadiene rubber (SBR), acrylonitrile butadiene rubber, acrylic rubber, butyl rubber, fluoro rubber, polyvinyl alcohol, carboxymethyl cellulose (CMC), starch, hydroxypropyl cellulose, regenerated cellulose, polyvinyl alcohol (PVA), polyacrylic acid (PAA), polyethylene glycol (PEG), polyacrylonitrile (PAN), and polyacryl amide (PAM).

[0056] Meanwhile, the negative tab, which is extended downwards by a certain length after being connected to the negative electrode's non-conductive portion, is electrically connected to the cylindrical battery case, more specifically, to the bottom surface.

[0057] The separator prevents shorting between the aforementioned negative electrode and positive electrode and only allows the movement of lithium ions. The material of the separator is preferably one selected from among polyethylene, polypropylene, polyethylene / polypropylene double layer, polyethylene / polypropylene / polyethylene triple layer, polypropylene / polyethylene / polypropylene triple layer, and organic fiber filter paper, but is not limited thereto.

[0058] An insulating member may be positioned on the upper and lower portions of the electrode assembly housed in the cylindrical battery case, and the insulating member serves to insulate between the electrode assembly and the cap assembly, and between the electrode assembly and the cylindrical battery case.

[0059] The cap assembly is positioned on top of the electrode assembly and is electrically connected to the positive tab of the electrode assembly, and is coupled to the upper open end of the cylindrical battery case to seal the electrode assembly housed inside the cylindrical battery case.

[0060] Specifically, the cap assembly comprises a current blocking member, a current blocking gasket, a safety vent, a PTC element, and a top cap sequentially stacked from the bottom, and a crimping gasket is positioned on the outer edges of the current blocking member and the top cap.

[0061] The current interrupting member, also called a current interrupt device (CID), is located on the upper portion of the electrode assembly and has a positive tab connected to a predetermined position on its lower surface. Although the drawing shows the current interrupting member as having a flat shape, it may also have a shape with a central portion convex upward.

[0062] A safety vent with one or more notches is positioned on the upper portion of the current-blocking member, with the center portion protruding downward. The safety vent interrupts the current and exhausts gas when the pressure inside the cylindrical battery case increases. One side of the safety vent is positioned to contact the PTC element, and the edge end surface is positioned to contact the crimping gasket.

[0063] The current interrupting gasket is positioned so that the current interrupting member and the safety vent remain electrically insulated, except for the downward protruding portion of the current interrupting member and the safety vent.

[0064] When the temperature inside the battery rises and the resistance increases, the PTC (Positive Temperature Coefficient) element, which blocks the current, is located on one side of the edge, in contact with the safety vent, and on the other side, in contact with the inner side of the edge of the top cap.

[0065] In the case of cylindrical secondary batteries, gas may be generated due to various reasons, including external impact, which may increase internal pressure and ultimately lead to fire or explosion.

[0066] The aforementioned current interrupting member and safety vent are intended to facilitate the discharge of gases that cause an increase in internal battery pressure. When the internal pressure of the battery exceeds a predetermined level, a predetermined part of the current interrupting member and safety vent is broken to prevent an explosion.

[0067] The top cap located at the top seals the upper open end of the battery case and forms a positive terminal, and one or more venting holes are formed in the top cap so that when venting gas is generated inside the cylindrical battery case, it can be released to the outside to prevent an explosion.

[0068] The cylindrical battery case accommodates the electrode assembly and the cap assembly, and a negative tab extends downward and is connected to the bottom of the cylindrical battery case body so that the bottom of the cylindrical battery case body can act as a negative electrode.

[0069] As described above, the cylindrical battery case has a crimping portion provided at the upper end to seal and wrap the outer side of the cap assembly, and an indented beading portion provided below the crimping portion to firmly fix the electrode assembly and the cap assembly while protecting them from external impacts, etc.

[0070] The module case (200) houses a plurality of cylindrical battery cells (100) and a PCB assembly (300) that electrically connects the cylindrical battery cells (100), thereby protecting them from external impact and foreign substances.

[0071] The module case (200) may be configured to include a lower module case (210) in a hexahedral shape with one side open and an upper module case (220) positioned on one open side of the lower module case (210).

[0072] The lower module case (210) and the upper module case (220) may be made of a lightweight plastic material with a certain rigidity, and there are no particular restrictions as long as they can protect the components stored inside from external impact and foreign substances.

[0073] Next, the PCB assembly (300) is positioned on top of the cylindrical battery cell (100) and may be configured to include a PCB body plate (310) and a first sensing pattern portion (320).

[0074] The PCB body plate (310) may be a flat plate with an electric circuit printed on it, and may be a material with a certain degree of flexibility for free connection.

[0075] The PCB body plate (310) may be provided with an opening (311) cut in a certain area at a position corresponding to the upper surface of the cylindrical battery cell (100).

[0076] The opening (311) is formed with an area such that only a portion of the cylindrical battery cell (100) is exposed, and can serve as a passage through which the connecting portion (400) described later can come into contact with the cylindrical battery cell (100).

[0077] The opening (311) of the PCB assembly (300) is positioned so that a portion of the vertical extension line of the cylindrical battery cell (100) overlaps with the area of ​​the PCB assembly (300) that is not exposed by the opening (311), thereby forming an area of ​​the PCB assembly (300) that overlaps with the area of ​​the cylindrical battery cell (100) along the vertical extension line, which has the advantage of preventing the cylindrical battery cell (100) from vertically deviating.

[0078] The first sensing pattern section (320) is located on one side of the PCB body plate (310), can be formed integrally with the PCB body plate (310), and can be provided with various types of sensing patterns.

[0079] The first sensing pattern portion (320) may be formed within the area of ​​the vertically extended PCB body plate (310). This is because, if it is formed outside the area of ​​the vertically extended PCB body plate (310), a part of the opening (311) may be blocked, making it impossible to connect the cylindrical battery cell (100) and the PCB assembly (300) by the connecting portion (400).

[0080] In addition, the first sensing pattern unit (320) is formed with a voltage sensing pattern for sensing voltage, a temperature sensing pattern for sensing temperature, a resistance sensing pattern for sensing resistance, and a current sensing pattern for sensing current, so that, unlike the prior art, a harness and connecting line for sensing voltage and current, etc. can be omitted by connecting the sensing device and the PCB assembly (300), thereby reducing the manufacturing time and manufacturing cost.

[0081] In addition, there is an advantage in that the volume is reduced by omitting harnesses and connecting lines for connection, thereby improving energy density.

[0082] The connecting portion (400) electrically connects the cylindrical battery cell (100) and the PCB assembly (300).

[0083] The connecting portion (400) may be a wire, and is connected by wire bonding, and has the advantage that even if some movement of the cylindrical battery cell (100) occurs, the probability of a short circuit occurring is lower compared to a bar-shaped connecting portion (400).

[0084] In addition, the connection part (400) made of wire has the advantage that the movement of the wire is relatively free, making it easier to connect the cylindrical battery cell (100) and the PCB assembly (300).

[0085] FIG. 5 is an exploded perspective view showing a battery module according to a second preferred embodiment of the present invention, and FIG. 6 is a vertical cross-sectional view of a battery module according to a second preferred embodiment of the present invention.

[0086] Referring to FIGS. 5 and 6, the battery module according to the second preferred embodiment of the present invention is identical to the battery module according to the first embodiment described in FIGS. 2 to 4 except that it further includes a second sensing pattern unit (330), and therefore, a description of the same configuration is omitted.

[0087] In the battery module according to the second embodiment, the PCB assembly (300) is configured to include a PCB body plate (310), a first sensing pattern portion (320), and a second sensing pattern portion (330).

[0088] The second sensing pattern unit (330) is located on one side of the first sensing pattern unit (320), can be formed integrally with the PCB body plate (310), and can be provided with various types of sensing patterns.

[0089] The second sensing pattern portion (330) may be formed within the area of ​​the vertically extended PCB body plate (310). This is because, if it is formed outside the area of ​​the vertically extended PCB body plate (310), a part of the opening (311) may be blocked, making it impossible to connect the cylindrical battery cell (100) and the PCB assembly (300) by the connecting portion (400).

[0090] The first sensing pattern unit (320) is formed with one sensing pattern among a voltage sensing pattern for sensing voltage, a temperature sensing pattern for sensing temperature, a resistance sensing pattern for sensing resistance, and a current sensing pattern for sensing current, and the second sensing pattern unit (330) can be formed with another sensing pattern that is not formed in the first sensing pattern unit (320).

[0091] Unlike the conventional technology, the first sensing pattern unit (320) and the second sensing pattern unit (330) can omit harnesses and connecting lines for sensing voltage, temperature, resistance, current, etc. by connecting the sensing device and the PCB assembly (300), thereby reducing manufacturing time and manufacturing costs.

[0092] In addition, although FIGS. 5 and 6 illustrate a structure in which the second sensing pattern portion (330), the first sensing pattern portion (320), and the PCB body plate (310) are stacked in that order from the bottom, a structure in which the first sensing pattern portion (320), the second sensing pattern portion (330), and the PCB body plate (310) are stacked in that order from the bottom is also possible.

[0093] The present invention may be a battery pack including the battery module described above, and may also be a device including the battery pack described above. Here, the device may be, for example, an electric vehicle, an electric motorcycle, an electric kickboard, and the like.

[0094] As described above, specific parts of the present invention have been described in detail. To those skilled in the art, such specific descriptions are merely preferred embodiments, and the scope of the present invention is not limited thereby. It is obvious to those skilled in the art that various changes and modifications are possible within the scope and technical idea of ​​the present invention, and it is natural that such changes and modifications fall within the scope of the appended patent claims.

[0095] (Explanation of symbols)

[0096] 100: Battery cell

[0097] 200: Module Case

[0098] 210: Lower module case

[0099] 211: Storage Hall

[0100] 220: Upper module case

[0101] 300: PCB assembly

[0102] 310: PCB body plate

[0103] 311: Opening

[0104] 320: First sensing pattern section

[0105] 330: Second sensing pattern section

[0106] 400: Connection

Claims

1. A plurality of cylindrical battery cells; A module case for storing the above cylindrical battery cell; A PCB assembly positioned on top of the cylindrical battery cell; and A connecting member electrically connecting the cylindrical battery cell and the PCB assembly; A battery module, characterized in that the PCB assembly includes a PCB body plate and a first sensing pattern portion provided on one surface of the PCB body plate.

2. In paragraph 1, A battery module characterized in that the PCB assembly has an opening formed by cutting a portion of the PCB assembly at a position corresponding to the upper surface of the cylindrical battery cell.

3. In paragraph 2, A battery module characterized in that the above opening has an area that exposes only a portion of the upper surface of the cylindrical battery cell.

4. In paragraph 2, A battery module characterized in that the cylindrical battery cell and the PCB assembly are positioned so that some areas along the vertical extension line overlap.

5. In paragraph 2, A battery module, characterized in that the first sensing pattern section has a voltage sensing pattern formed therein for sensing the voltage of the cylindrical battery cell.

6. In paragraph 2, A battery module, characterized in that the first sensing pattern section has a current sensing pattern formed therein for sensing the current of the cylindrical battery cell.

7. In paragraph 2, A battery module, characterized in that the first sensing pattern portion is provided within the area of ​​the PCB body plate.

8. In paragraph 1, A battery module characterized in that the PCB body plate and the first sensing pattern portion are configured as an integral part.

9. In paragraph 1, A battery module, characterized in that the above connecting part is a wire.

10. In paragraph 1, A battery module characterized in that a second sensing pattern part is further provided on one side of the first sensing pattern part.

11. In paragraph 10, A battery module characterized in that the PCB body plate, the first sensing pattern portion, and the second sensing pattern portion are configured as an integral part.

12. A battery pack comprising a battery module according to any one of claims 1 to 11.

13. A device equipped with a battery pack as described in Article 12.

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