A simplified connection between electrode leads and voltage sensing components in a battery module and a battery pack including therein.

Abstract

The battery module according to the invention includes: a battery stack comprising battery cells stacked in one direction and lead overlap portions formed by the overlap of electrode leads of the battery cells; and a voltage sensing member having one or more sensing portions directly connected to one or more lead overlap portions, wherein each lead overlap portion and each sensing portion can be directly joined together by clamping.

Description

Technical Field

[0001] This disclosure relates to a battery module, and more particularly to such a battery module and a battery pack including the battery module, wherein the connection structure between the voltage sensing member and the electrode leads of the battery cells for voltage sensing of the battery cells in the battery module is improved. Background Technology

[0002] A semi-permanent battery that converts electrical energy into chemical energy and can be repeatedly charged and discharged is called a secondary battery, to distinguish it from a primary battery that cannot be used again after one use.

[0003] Secondary batteries include lithium-ion batteries, nickel-cadmium (Ni-Cd) batteries, lead-acid batteries, nickel-metal hydride (Ni-MH) batteries, zinc-air batteries, alkaline manganese batteries, and so on. Among them, lead-acid batteries and lithium-ion batteries are the most active commercially available secondary batteries.

[0004] In particular, lithium-ion batteries have recently been actively used as batteries for electric vehicles due to their advantages such as high energy density, lightweight and miniaturization potential, excellent stability, low discharge rate, and long lifespan. For reference, lithium-ion batteries are generally classified into cylindrical, angular, and pouch types according to their manufacturing methods, and their uses include not only electric vehicle batteries but also electronic switching system (ESS) batteries and other electric devices.

[0005] Currently, a single lithium-ion battery cell cannot provide sufficient output to power an electric vehicle. To utilize secondary batteries as an energy source for electric vehicles, a battery module consisting of multiple lithium-ion battery cells connected in series and / or parallel is required. Generally, this involves configuring a battery pack that includes a battery management system (BMS), a cooling system, a battery disconnect unit (BDU), wiring and cables, etc., which connect the battery modules in series and maintain functional consistency.

[0006] like Figure 1 As shown, when the battery module is configured with pouch-type secondary battery cells, the electrode leads 1a and 1b of the pouch-type secondary battery cells are laser-welded to the busbar 3. The busbar 3 is located at the front of the battery module or at both the front and rear, and each busbar 3 is welded with multiple electrode leads 1a and 1b, thus the secondary battery cells are connected in series and in parallel.

[0007] The voltage information of the secondary battery cells in the battery module is transmitted to the BMS via the sensing component 5 connected to each busbar 3, and the BMS controls the charging and discharging of the secondary battery cells by monitoring the state of each secondary battery cell based on the voltage information.

[0008] The sensing component 5 is made of wire harness, flat flexible cable (FFC), flexible printed circuit board (FPCB), etc. In the prior art, the sensing component 5 and the bus bar 3 are electrically connected by pressing the welding terminal 6 to the end of the sensing component 5 and welding the sensing component 5 to the bus bar 3 with the aid of laser.

[0009] However, as mentioned above, the method of indirectly connecting electrode leads 1a and 1b to sensing component 5 via busbar 3 as a medium is expensive and it is not easy to manage the quality of laser welding. Summary of the Invention

[0010] Technical issues

[0011] This disclosure aims to address the problems of the prior art. Therefore, this disclosure aims to simplify the assembly process of the battery module by directly connecting the electrode leads of the battery cell to the corresponding sensing part of the voltage sensing component without using a busbar.

[0012] The technical problems to be solved in this disclosure are not limited to those described above. Those skilled in the art can clearly understand other problems not mentioned based on the following description of this disclosure.

[0013] Technical solution

[0014] In one aspect of this disclosure, a battery module is provided, comprising: a battery stack having battery cells stacked in one direction and at least one lead overlap, the at least one lead overlap being formed by the overlapping of electrode leads of the battery cells; and a voltage sensing member having at least one sensing portion directly connected to the at least one lead overlap, wherein each lead overlap and each sensing portion are directly coupled by clamping.

[0015] The battery module may further include a support frame having slits formed at predetermined intervals along the stacking direction of the battery cells, the support frame being disposed at the front or rear of the battery stack, wherein each lead overlap can be extracted to the front of the support frame via each of the slits, and each lead overlap is arranged to face the surface of the support frame.

[0016] The support frame may have a clamping groove, and the overlapping areas of the lead wires and the sensing part may be press-fitted into the clamping groove.

[0017] The clamping groove may include: a recessed edge region; and a central region that protrudes relative to the edge region.

[0018] Among the electrode leads forming the lead overlap, the electrode leads arranged to directly contact the support frame include holes that can be formed smaller than the inner diameter of the clamping groove.

[0019] The battery module may include a lead holding member having a first holding rod adhered to the front of the support frame, such that the connection between the lead overlap and the at least one sensing part is disposed between the first holding rod and the support frame, and the lead holding member is detachably disposed at the support frame.

[0020] The lead wire retaining member may include: a shaft that is hinged to the lower part of the support frame and connected to the first retaining rod; and a second retaining rod that is connected to the shaft and extends parallel to the first retaining rod at a predetermined interval.

[0021] The support frame may include at least one latch configured to engage with and lock to the first retaining rod.

[0022] The voltage sensing component may include: a first body portion arranged to extend along the longitudinal direction of the battery stack at the top of the battery stack; and a second body portion extending from both ends of the first body portion in the width direction of the battery stack, wherein each of the at least one sensing portion may extend from the second body portion to contact each of the at least one lead overlap portion.

[0023] The voltage sensing component can be made of a flat flexible cable (FFC) or a flexible printed circuit board (FPCB).

[0024] In another aspect of this disclosure, a battery pack including a battery module is provided.

[0025] In another aspect of this disclosure, a vehicle including a battery pack is provided.

[0026] Beneficial effects

[0027] The battery module according to this disclosure can have a simplified assembly structure because the electrode leads of the battery cell and the corresponding sensing parts of the voltage sensing component can be directly connected and fixed by clamping without the use of a busbar.

[0028] Furthermore, according to this disclosure, compared with the method of connecting electrode leads, busbars and voltage sensing components using laser welding methods according to the prior art, manufacturing costs can be reduced by clamping the electrode leads and voltage sensing components without using busbars.

[0029] The effects of this disclosure are not limited to the above aspects; those skilled in the art can clearly understand the effects not mentioned based on this specification and the accompanying drawings. Attached Figure Description

[0030] Figure 1 This is a diagram showing a portion of a battery module according to existing technology.

[0031] Figure 2 This is a partial exploded perspective view of a battery module according to one embodiment of the present disclosure.

[0032] Figure 3 This is a diagram showing the front of a battery module according to one embodiment of the present disclosure.

[0033] Figure 4 yes Figure 3 A magnified view of a portion of the image.

[0034] Figure 5 It is along Figure 4 A cross-sectional view cut by line A-A'.

[0035] Figure 6 This diagram illustrates the clamping process between the lead overlap portion and the sensing portion according to one embodiment of the present disclosure.

[0036] Figure 7 Is with Figure 5 The corresponding figure shows a variation of the combined structure of the lead overlap and the sensing part.

[0037] Figure 8 yes Figure 7 Diagram showing the clamping process of the lead wire overlap and the sensing part.

[0038] Figure 9 Is with Figure 4 The corresponding figure shows the configuration of the lead holding member of a battery module according to another embodiment of the present disclosure.

[0039] Figure 10 It is shown Figure 9 The diagram shows the state in which the lead wires hold the component adhered to the support frame. Detailed Implementation

[0040] The preferred embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. Before the description, it should be understood that the terminology used in the specification and appended claims should not be construed as limited to its general and dictionary meanings, but rather interpreted according to the meanings and concepts corresponding to the technical aspects of this disclosure, based on the principle of allowing the inventors to appropriately define the terms to obtain the best interpretation. Therefore, the descriptions presented herein are for illustrative purposes only and are not intended to limit the scope of this disclosure; thus, it should be understood that other equivalents and modifications can be made thereto without departing from the scope of this disclosure.

[0041] Embodiments of this disclosure are provided to further fully describe the disclosure to those skilled in the art; therefore, for clarity, the shapes and sizes of elements in the figures may be exaggerated, omitted, or shown schematically. Consequently, the size or proportion of each element does not perfectly reflect its actual size or proportion.

[0042] Figure 2 This is a partial exploded perspective view of a battery module according to one embodiment of the present disclosure. Figure 3 This is a diagram showing the front of a battery module according to one embodiment of the present disclosure, and Figure 4 yes Figure 3 A magnified view of a portion of the image.

[0043] Reference Figures 2 to 4 According to one embodiment of the present disclosure, the battery module 10 may include a battery stack 100, a support frame 210, and a voltage sensing component 300.

[0044] The battery stack 100 is an assembly that includes battery cells 110. Each battery cell 110 is erected in the vertical direction (±Z) and stacked in the horizontal direction (±Y) to form a battery stack 100.

[0045] Buffer pads, cooling pins, etc., can be further added between the battery cells 110. Buffer pads or cooling pins can absorb vibrations or effectively dissipate heat from each battery cell 110 to the outside.

[0046] A pouch-type battery cell or a corner-type battery cell can be used as the battery cell 110, and in this embodiment, a pouch-type battery cell 110 is used.

[0047] Although not described in detail, the pouch-type battery cell 110 may include electrode assemblies, electrolyte, and a pouch-like external material for sealing and containing the electrode assemblies and electrolyte.

[0048] The electrode assembly may have a stacked structure of positive plate / separator / negative plate, the positive plate and the negative plate including electrode terminals, and at least one electrode terminal connected to an electrode lead. The electrode lead extends from the inside to the outside of the pouch-type outer material to serve as the electrode terminal of the battery cell 110. Here, the electrode leads are collectively referred to as positive lead 111a and negative lead 111b.

[0049] The bag-like external material protects internal components such as electrode assemblies and electrolytes, and can be configured to include a metal film (e.g., an aluminum film) to complement the electrochemical properties of the electrode assemblies and electrolytes and enhance heat dissipation. The aluminum film can be disposed between an internal adhesive layer and an insulating layer formed of insulating material to ensure electrical insulation.

[0050] In particular, in the battery module 10 according to the present disclosure, the electrode leads 111a and 111b of adjacent battery cells 110 overlap each other in a predetermined pattern, so that the battery cells 110 are connected in series or in parallel.

[0051] For example, assuming any one of the battery cells 110 is the Nth battery cell, subsequent battery cells 110 are successively the (N+1)th battery cell, the (N+2)th battery cell, and so on, and each battery cell 110 is arranged facing the adjacent battery cell 110, with the polarities in opposite directions along the stacking direction (±Y axis). The positive electrode lead 111a of the Nth battery cell and the negative electrode lead 111b of the (N+1)th battery cell are stacked at the front of the battery stack 100, and the positive electrode lead 111a of the (N+1)th battery cell and the negative electrode lead 111b of the (N+2)th battery cell are stacked at the rear of the battery stack 100. The electrode leads of the battery cells 110 are stacked in this manner and secured with riveting members described below to connect the battery cells 110 in series.

[0052] As another embodiment, by forming two or three consecutive battery cells 110 as a group, the same group can be arranged such that the polarity faces the same direction, and the positive electrode lead 111a of one group and the negative electrode lead 111b of another group can be stacked and clamped together as a whole, thereby connecting the battery cells 110 in series and parallel.

[0053] The configuration in which the electrode lead stacks are connected to the battery cell 110 in series or in parallel is referred to below as lead overlap 111.

[0054] The support frame 210 is a unit used to support the battery stack 100, and the support frame can be provided at the front and rear of the battery stack 100.

[0055] The support frame 210 includes slits 211 formed at predetermined intervals along the stacking direction (±Y) of the battery cells 110. The lead overlap portions 111 of the battery stack 100 can be extracted to the front of the support frame 210 via the slits 211. The lead overlap portions 111 passing through the slits 211 can be bent to face the support frame 210. Spacing plates 213 can be provided between the bent lead overlap portions 111 to prevent short circuits caused by any metal object.

[0056] The top plate frame 230 can be arranged on top of the support frame 210. The top plate frame 230 is configured to cover the top of the battery stack 100, and its two ends can be configured to be hinged to the top of the two support frames 210.

[0057] The voltage sensing component 300 is an element that operates to sense the node voltages of the series-connected battery cells 110 and transmits the voltage information of each battery cell 110 to the battery management system (BMS) (not shown). The BMS monitors the state of the battery cells 110 via the voltage sensing component 300 and controls the charging and discharging of the battery cells 110.

[0058] The voltage sensing component 300 can be implemented by a thin-film cable, such as a flexible printed circuit board (FPCB) or a flat flexible cable (FFC).

[0059] FPCBs can be manufactured by arranging copper foil stacks on a base film, laminating dry film, performing exposure, development, and etching processes to form conductor lines with regular spacing, and then attaching a cover film. Alternatively, FFCs can be manufactured by arranging conductor lines at regular intervals on a base film and then laminating a cover film on top of it.

[0060] The voltage sensing component 300 in this thin-film cable form has excellent conductor conductivity and good insulation between conductors by using an insulating film, thus allowing a large number of signals to be processed in a minimal volume.

[0061] Referring to 2, the voltage sensing component 300 according to this disclosure is manufactured in the form of an FPCB and includes: a first body portion 310 arranged on top of the battery stack 100 extending in the longitudinal direction (±X-axis) of the battery stack 100; a second body portion 320 extending from both ends of the first body portion 310 in the width direction (±Y-axis) of the battery stack 100; and sensing portions 330 arranged to extend from the second body portion 320 at positions corresponding to the lead overlap portions 111 of the battery stack 100. A connector 340 may be mounted on one side of the second body portion 320, and signals can be transmitted to or received from the connector 340 by accessing another cable connector (not shown) connected to the BMS.

[0062] For reference, the voltage sensing component 300 is positioned on top of the battery stack 100 to reduce wiring distance and facilitate installation. If necessary, the voltage sensing component 300 can be positioned elsewhere besides the top of the battery stack 100.

[0063] The electrical connection structure and method between each sensing part 330 of the voltage sensing member 300 and each lead overlap 111 of the battery stack 100 will be described below.

[0064] like Figure 3 As shown, the positive terminal 214a and negative terminal 214b of the battery module 10 can be arranged at the left and right ends of the support frame 210, respectively, and can be provided in the form of a metal strip with its top end bent outwards horizontally. At the positive terminal 214a, the positive lead of the outermost battery cell 110 on one side of the battery stack 100 can be attached, and at the negative terminal 214b, the negative lead of the outermost battery cell 110 on the other side can be attached.

[0065] Excluding the electrode leads and sensing unit 330 that are respectively attached to the positive terminal 214a and the negative terminal 214b, the electrode leads and sensing unit 330 of the battery unit 110 can be directly connected without the need for a busbar.

[0066] like Figure 4 As shown, each sensing portion 330 extends downward from the second body portion 320 and is disposed on the front surface of each lead overlap portion 111, and the end of each sensing portion 330 is configured such that one surface of the insulating film 331 is removed and the sensing terminal 333 is exposed. Such ends of the sensing portions 330 are engaged with the lead overlap portion 111 by clamping, thereby realizing conduction.

[0067] In other words, the end of the sensing unit 330 and the lead wire overlapping portion 111 can be clamped onto the support frame 210 while overlapping each other. For reference, it is possible to clamp and engage only the sensing unit 330 and the lead wire overlapping portion 111 using a clamping device including a mold (not shown) and a stamper P. However, in this case, the sensing unit 330 and the lead wire overlapping portion 111 may move during engagement due to external impact or vibration. In this respect, this embodiment is configured such that... Figure 5 As shown, by pressing the end of the sensing part 330 and the lead wire overlapping part 111 onto the support frame 210, the sensing part 330 and the lead wire overlapping part 111 are simultaneously combined and fixed.

[0068] Specifically, in this embodiment, a clamping groove 216 is further provided in the support frame 210 to press the sensing part 330 and the lead wire overlapping part 111 together onto the support frame 210. During the clamping process, the clamping groove 216 acts as a mold to support the lead wire overlapping part 111 and the sensing part 330.

[0069] Such a clamping groove 216 may include: a recessed edge region 216a; and a central region 216b that protrudes relative to the edge region 216a.

[0070] As described below, the clamping groove 216 can be made of a metal such as stainless steel to fully withstand the pressure of the stamper P and is injection molded into the support frame 210.

[0071] The clamping method of the sensing unit 330 and the lead wire overlapping part 111 according to this embodiment will be briefly described below.

[0072] First, such as Figure 6 As shown in (a), one surface of the lead overlap portion 111 is arranged to face the clamping groove 216 of the support frame 210, and one surface of the sensing portion 330 is arranged to face the other surface of the lead overlap portion 111.

[0073] Then, as Figure 6 As shown in (b), the sensing portion 330 and the lead overlap portion 111 are pressurized relative to the clamping groove 216 by using the stamping press P. The pressurized area moves into the clamping groove 216, thus deforming according to the internal shape of the clamping groove 216. Here, the thickness of the sensing portion 330 and the lead overlap portion 111 outside the clamping groove 216 does not change significantly, but the area arranged inside the clamping groove 216 is compressed and its thickness changes, so the sensing portion 330 and the lead overlap portion 111 can be joined together.

[0074] The maximum value of the pressure applied by the stamper P can be preset according to the thickness of the material or the base material to be bonded, and when the pressure applied by the stamper P reaches the maximum value, the stamper P returns to its original position (e.g., Figure 6 (as shown in (c)).

[0075] Therefore, the lead overlap portion 111 and the sensing portion 330 can be forcefully pressed together and fixed in the clamping groove 216 while overlapping each other. Although not shown, another part of the lead overlap portion 111 can be additionally fixed to the support frame 210 by the above method.

[0076] Figure 7 Is with Figure 5 The corresponding figure shows a variant example of the combined structure of the lead overlap and the sensing part, and Figure 8 yes Figure 7Diagram showing the clamping process of the lead wire overlap and the sensing part.

[0077] In the lead overlap portion 111 according to the variant example, the electrode leads arranged to directly contact the support frame 210 are provided with holes H formed with an inner diameter smaller than that of the clamping groove 216A.

[0078] For example, refer to Figure 7 and Figure 8 ,and Figure 5 Compared to the implementation, the variant has a hole H formed in the negative lead 111b and has a bonding structure, wherein a portion of the positive lead 111a is arranged between the negative lead 111b and the clamping groove 216 via the hole H.

[0079] According to this variation, the positive electrode lead 111a can adhere to both surfaces of the negative electrode lead 111b, and the adhesion between the positive electrode lead 111a and the sensing part 330 can be further increased. Therefore, compared with the above embodiment, the variation can have a better bonding strength between the lead overlap 111 and the sensing part 330.

[0080] As described above, compared with the prior art method of indirectly connecting the sensing unit and electrode leads by laser welding using a busbar as a medium, the method of directly connecting the lead overlap 111 and the sensing unit 330 by clamping has no heat and sparks, is environmentally friendly, and has excellent cost-effectiveness.

[0081] Furthermore, generally speaking, the positive lead 111a is made of aluminum (Al) and the negative lead 111b is made of copper (Cu), which may result in lower bonding strength when welding and joining dissimilar metals. However, the clamping bonding method is not significantly hindered by the type of metal, and therefore has advantages over welding methods in joining dissimilar metals.

[0082] In addition, the combination range of the parent material is wide in the clamping bonding method. Therefore, unlike this embodiment, the lead overlap 111 can be configured by stacking two or at least three positive leads 111a and negative leads 111b and clamping the lead overlap 111 and the sensing part 330.

[0083] Figure 9 Is with Figure 4 The corresponding figure shows the configuration of the lead holding member of a battery module according to another embodiment of the present disclosure, and Figure 10 It is shown Figure 9 The diagram shows the state in which the lead wires hold the component adhered to the support frame.

[0084] Then, refer to Figure 9 and Figure 10A battery module according to another embodiment of the present disclosure is described.

[0085] Similar reference numerals are used to denote similar elements as in the above embodiments. The main description will focus on the differences from the above embodiments, while redundant descriptions of similar elements will be omitted.

[0086] Compared with the battery module 10 of the above embodiments, the battery module according to another embodiment of the present disclosure further includes a lead holding member 500.

[0087] The lead retaining member 500 is a component used to prevent movement of the lead overlap portion 111 and to prevent short circuits from occurring.

[0088] In detail, the lead retaining member 500 includes a shaft 510, a first retaining rod 520, and a second retaining rod 530. Additionally, the support frame 210 may include a support rod 215 located at its bottom end and includes at least one latch 217 located at a predetermined interval in the upward direction from the support rod 215 for attaching and detaching the lead retaining member 500.

[0089] One end of the shaft 510 of the lead wire retaining member 500 is rotatably connected to the support rod 215 via a hinge. For example, said end of the shaft 510 can be inserted into the support rod 215 in an arcuate ring shape. There can be multiple shafts 510.

[0090] The first retaining rod 520 and the second retaining rod 530 can be connected to the shaft 510 and extend in the direction passing through the shaft 510, and their length can correspond to the left and right width of the battery stack 100.

[0091] The first retaining rod 520 and the second retaining rod 530 can be connected to the shaft 510 at positions spaced apart from each other in order to apply pressure to different areas of the lead wire overlap 111.

[0092] By using such a configuration, when in such a state Figure 9 In the state shown, the lead holding member 500 rotates in the upward direction, causing the lead holding member 500 to adhere to the front of the support frame 210, and the latch 217 of the support frame 210 latches and locks to the first holding rod 520.

[0093] Here, the first retaining rod 520 can be attached to the front of the support frame 210 so that the connection between the lead wire overlapping portion 111 and the sensing portion 330 is disposed between the first retaining rod 520 and the support frame 210, and the second retaining rod 530 can be attached to the front of the support frame 210 so that the bottom of the lead wire overlapping portion 111 is disposed between the second retaining rod 530 and the support frame 210.

[0094] Unlike the embodiments described above, the lead retaining member 500 prevents movement of the sensing unit 330 and the lead overlap portion 111 from being press-fitted and fixed to the support frame 210. In other words, the sensing unit 330 and the lead overlap portion 111 can be directly connected by clamping, and the sensing unit 330 and the lead overlap portion 111 can be adhered and fixed to the front of the support frame 210 by using the lead retaining member 500.

[0095] In addition, in the above embodiments, the isolation plate 213 is provided to prevent accidental short circuits, for example, when any metal object comes into contact with adjacent lead overlap portions 111 during the assembly of the battery module. However, in this embodiment, the lead overlap portions 111 are covered by the lead holding member 500, so the isolation plate 213 can be removed, and the lead holding member 500 can perform short circuit protection.

[0096] As described above, compared with the prior art battery module 10, the battery module 10 according to this disclosure can have a simplified assembly structure by omitting the busbars that are typically used for electrical connection and voltage sensing in the prior art for battery cell 110, and by directly connecting and fixing the voltage sensing member 300 and the electrode leads of battery cell 110 by clamping.

[0097] Furthermore, compared to the battery module 10 in the prior art that combines the electrode leads, busbars, and voltage sensing components 300 by laser welding, the battery module 10 of this disclosure consumes less manufacturing cost because the busbars are omitted and a relatively inexpensive clamping method is applied.

[0098] Furthermore, the battery pack according to this disclosure may include one or more battery modules according to this disclosure. In addition to the battery modules, the battery pack according to this disclosure may further include a battery pack housing for housing the battery modules, and various devices for controlling the charging and discharging of each battery module (e.g., a main BMS, a current sensor, a fuse, etc.).

[0099] The battery module according to this disclosure can be applied to vehicles (such as electric vehicles or hybrid vehicles). In other words, the vehicle may include the battery module according to this disclosure.

[0100] This disclosure has been described in detail. However, it should be understood that while the detailed description and specific embodiments illustrate preferred embodiments of this disclosure, they are given by way of illustration only, as various variations and modifications within the scope of this disclosure will become apparent to those skilled in the art based on this detailed description.

[0101] Meanwhile, this specification uses terms for indicating direction (such as up, down, left, right), but these terms are only for the convenience of description, and it will be obvious to those skilled in the art that these terms may change depending on the position of the target object or the position of the observer.

[0102] This application claims priority to Korean Patent Application No. 10-2020-0091074, filed in Korea on July 22, 2020, the disclosure of which is incorporated herein by reference.

Claims

1. A battery module, the battery module comprising: A battery stack having battery cells stacked in one direction and at least one lead overlap, the at least one lead overlap being formed by the overlapping of electrode leads of the battery cells; A voltage sensing component having at least one sensing part, the at least one sensing part being directly connected to the at least one lead overlap portion; A support frame having a clamping groove, wherein the overlapping areas of the lead wires and the sensing unit are press-fitted into the clamping groove. In this configuration, the overlapping portions of the leads and the sensing units are directly joined together by clamping. The support frame has slits formed at predetermined intervals along the stacking direction of the battery cells, and the support frame is arranged at the front or rear of the battery stack. Each lead overlap extends to the outer surface of the support frame via a corresponding slit, and each lead overlap is arranged to face the outer surface of the support frame.

2. The battery module according to claim 1, wherein, The clamping groove includes: The edge area formed by the depression; and The central region is formed by protruding relative to the edge region.

3. The battery module according to claim 1, wherein, Among the electrode leads forming the lead overlap, the electrode leads arranged to directly contact the support frame include holes formed with an inner diameter smaller than that of the clamping groove.

4. The battery module according to claim 1, the battery module comprising a lead holding member having a first holding rod inserted between the lead overlap portion and the connection portion of the sensing portion and in close contact with the front portion of the support frame, the lead holding member being detachably disposed at the support frame.

5. The battery module according to claim 4, wherein, The lead holding member includes: A shaft, which is hinged to the lower part of the support frame and connected to the first retaining rod; and A second retaining rod is connected to the shaft and extends parallel to it from a position spaced a predetermined interval from the first retaining rod.

6. The battery module according to claim 5, wherein, The support frame includes at least one latch configured to engage with and lock to the first retaining rod.

7. The battery module according to claim 1, wherein, The voltage sensing component includes: A first main body portion, which is arranged to extend along the longitudinal direction of the battery stack at the top of the battery stack; and The second main body extends from both ends of the first main body in the width direction of the battery stack. Each of the at least one sensing portion extends from the second main body portion to contact each of the at least one lead overlap portion.

8. The battery module according to claim 1, wherein, The voltage sensing component is made of a flat flexible cable (FFC) or a flexible printed circuit board (FPCB).

9. A battery pack comprising a battery module according to any one of claims 1 to 8.

10. A vehicle comprising a battery pack according to claim 9.

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