Bit Automatic Recognition Assembly System

Abstract

The present invention relates to a bit automatic recognition assembly system comprising a die on which a battery module or battery pack is disposed, two or more types of bits for screw fastening to the battery module or battery pack, a bit mounting portion on which the bits are mounted, at least one driver on which one of the bits is mounted, and a control portion that controls the selection of a specific bit among the bits and the operation of the driver according to a step of the screw fastening process, wherein the battery module or battery pack has two or more types of screw fastening portions formed therein, and includes at least one of a first sensor that checks whether the bits in the bit mounting portion are mounted according to a step of the screw fastening process and a second sensor that checks whether the bit is mounted to the driver, and wherein the operation of the driver is controlled according to a signal from the sensor.

Description

Technology Field

[0001] The present invention relates to an automatic bit recognition assembly system. Specifically, it relates to an automatic bit recognition assembly system capable of preventing bit misuse while allowing two or more types of screw fastening to proceed in a single assembly module during the assembly process of a battery module or battery pack, and an assembly method using the same. Background Technology

[0002] To apply lithium secondary batteries to medium-to-large product lines, multiple battery cells are configured in a high-capacity and high-output form. Multiple lithium secondary batteries are connected in parallel and / or series to form a battery module, and a battery pack is manufactured by adding other components to one or more of the battery modules.

[0003] A battery module or battery pack is manufactured by arranging a battery cell stack, which includes multiple battery cells, within a frame and assembling an outer case that encloses it. During the assembly process, multiple bolting steps may be performed, and screws of various shapes and sizes are used depending on the design and function of the battery module or battery pack.

[0004] Conventionally, since separate assembly modules are configured according to the shape and size of the screws, multiple assembly modules are required, and additional space must be secured accordingly. FIG. 1 is a schematic diagram of a battery pack assembly system including multiple assembly modules as an embodiment according to such prior art.

[0005] Referring to FIG. 1, the battery pack assembly system has three assembly modules (100) arranged in succession. A first assembly module for fastening screw 1, a second assembly module for fastening screw 2, and a third assembly module for fastening screw 3 are sequentially provided on the battery pack (10). Since a specific screw can be fastened to each assembly module, the steps of fastening screw 1, screw 2, and screw 3 to the battery pack (10) are independent but proceed sequentially. When each step is completed, the battery pack (10) must be moved to the next assembly module.

[0006] Since this type of assembly line requires not only cost for individual modules but also a significant amount of space, many attempts are being made to improve it.

[0007] FIG. 2 is a schematic diagram of an improved battery pack assembly system of the prior art. Referring to FIG. 2, the improved battery pack assembly system consists of a single assembly module (100). Since all screws are fastened within the single assembly module (100), there is no need to transport the battery pack step by step. The assembly module (100) of FIG. 2 can assemble all battery packs within a single assembly module without moving the battery pack, even if two or more types of screws are used.

[0008] In order to perform two or more types of screw fastening in a single assembly module, two or more types of bits suitable for each screw must be provided. The two or more types of bits are provided in the bit holder (200), and a worker or a work robot fastens the screw after mounting the appropriate bit on a driver.

[0009] Bits are similar in shape and size, making them highly susceptible to mixing up or using them incorrectly; in such cases, screws may not be fastened accurately and could even wear out.

[0010] A more improved assembly module is needed to minimize the space required for screw fastening during the battery pack manufacturing process, while preventing misassembly or defects that may occur during the screw fastening process.

[0011] Patent Document 1 discloses a configuration comprising an electric screwdriver, a screwdriver bit, a bit guide member, and a guide jig as a bolting device for manufacturing a battery pack, but it does not recognize the problem itself that may occur when using different types of screwdriver bits interchangeably.

[0012] Patent Document 2 relates to a screw fastening device that can fasten a screw without adjusting the height of the head even when the height of the object to be assembled is changed, and is not a configuration that requires replacing the bit for screw fastening.

[0013] Patent Document 3 relates to a bit separation device for drilling a substrate, which enables a bit of a cassette assembly to be automatically stored in a storage case. It discloses a configuration in which a bit of a cassette assembly is automatically stored in a plurality of bit storage holes formed in a storage case.

[0014] Patent Document 4 discloses that the vacuum suction sensor and vacuum pump operate or do not operate depending on whether the electric screwdriver is operated, thereby stably maintaining the screw for fastening until the fastening operation is performed, but it does not present a technology for fastening the screw by replacing bits of different types and using them.

[0015] As such, there is still a need for technology regarding an even more improved assembly module that minimizes the space required for screw fastening during the battery pack manufacturing process while preventing misassembly or defects that may occur during the screw fastening process. Prior art literature

[0016] Republic of Korea Published Patent Application No. 2022-0057505 ('Patent Document 1') Republic of Korea Registered Patent Application No. 1226832 ('Patent Document 2') Republic of Korea Registered Patent Application No. 1248482 ('Patent Document 3') Republic of Korea Registered Patent Application No. 0581697 ('Patent Document 4') The problem to be solved

[0017] The present invention aims to solve the above-mentioned problems by providing an automatic bit recognition assembly system and an assembly method using the same, which can reduce production costs by reducing the assembly space of a battery module or battery pack and prevent misassembly or defects that may occur during the process of fastening two or more types of screws. means of solving the problem

[0018] To achieve the above objectives, the present invention provides a bit automatic recognition assembly system comprising: a die on which a battery module or battery pack is placed; two or more types of bits for screw fastening to the battery module or battery pack; a bit mounting portion on which the bits are mounted; at least one driver on which one of the bits is mounted; and a control portion that controls the selection of a specific bit among the bits and the operation of the driver according to a step of the screw fastening process, wherein the battery module or battery pack has two or more types of screw fastening portions formed therein, and includes at least one of a first sensor that checks whether the bits in the bit mounting portion are mounted according to a step of the screw fastening process and a second sensor that checks whether the bit is mounted to the driver, and the operation of the driver is controlled according to a signal from the sensor.

[0019] The first sensor and the second sensor may each detect whether the bits are mounted and installed, as well as the type of the bits.

[0020] The first and second sensors can detect the types of the bits by vision.

[0021] To distinguish each of the above bits, at least one identification element among a tag, barcode, color, recognition chip, shape of a side groove, number of side grooves, and difference in bit length may be applied to each bit.

[0022] If, as a result of verifying the bit detected by the first sensor and / or the second sensor, a bit suitable for the screw fastening process is not used, an alarm is generated, and the control unit can control the driver so that it does not operate.

[0023] When the screw fastening process is completed, if the result of verifying the bit detected by the first sensor indicates that one or more bits are not mounted on the bit mounting part, an alarm may be generated.

[0024] The bit mounting portion is provided with grooves in which each bit is mounted individually, and the grooves may be configured as dedicated grooves that match each bit in a 1:1 ratio.

[0025] If, as a result of checking the bit detected by the first sensor, two or more bits are not mounted in the groove and / or another bit is mounted in the dedicated groove, an alarm is generated, and the control unit can control the driver so that it cannot operate.

[0026] The first sensor transmits the result of verifying the bit for an empty groove among the dedicated grooves to the control unit, and the control unit can control the driver so that it does not operate if the result of verifying the bit does not match the step of the screw fastening process.

[0027] The above driver is one, and only one of the bits is mounted on the driver to enable screw fastening.

[0028] The first sensor is provided in a number corresponding to the number of bits, and the first sensor can determine whether a bit is mounted and, accordingly, the total number of mounted bits.

[0029] The above bits all have different lengths, and the first sensor is positioned differently according to the length of each bit, forming a pair with a specific bit, and the first sensor can check whether the bit constituting the pair is mounted in a dedicated groove.

[0030] With the battery module or battery pack placed on the die, screw fastening for the two or more types of screw fastening parts can be operated sequentially.

[0031] Mounting and removing the above bit from the above driver and the above bit mounting part can be performed manually or by a robot.

[0032] The present invention also provides a method for assembling a battery module or battery pack using the bit automatic recognition assembly system.

[0033] The present invention can also be provided in a form that combines various means for solving the above problem. Effects of the invention

[0034] As explained above, the bit automatic recognition assembly system according to the present invention can fasten two or more types of screws of different shapes and sizes in a single assembly module, thereby saving costs and space in the production facility.

[0035] In addition, if the wrong screw bit is selected and mounted on the driver, or if a used bit is not placed in the correct position, it generates an alarm to notify the user and does not operate the driver, thereby preventing misassembly even in the event of operator error. Brief explanation of the drawing

[0036] FIG. 1 is a schematic diagram of a battery pack assembly system including a plurality of assembly modules according to the prior art. Figure 2 is a schematic diagram of an improved battery pack assembly system of the prior art. FIG. 3 is a perspective view of a bit mounting portion and a first sensor according to the first-sixth embodiment of the present invention. Figure 4 is a vertical cross-sectional view of Figure 3. FIG. 5 is a cross-sectional view of a bit mounting portion and a first sensor according to the first-seventh embodiment of the present invention. Specific details for implementing the invention

[0037] Embodiments that enable a person skilled in the art to easily practice the present invention are described in detail below with reference to the attached drawings. However, in describing the operating principles of preferred embodiments of the present invention in detail, if it is determined that a specific description of related known functions or configurations may unnecessarily obscure the essence of the present invention, such detailed description is omitted.

[0038] In addition, the same reference numerals are used for parts having similar functions and operations throughout the drawings. Throughout the specification, when a part is described as being connected to another part, this includes not only cases where they are directly connected, but also cases where they are indirectly connected with other elements in between. Furthermore, unless specifically stated otherwise, the inclusion of a certain component does not exclude other components but implies that additional components may be included.

[0039] Furthermore, descriptions that specify components by limiting or adding them may be applied to all inventions unless specifically limited, and are not limited to descriptions of specific inventions.

[0040] In addition, throughout the description of the invention and claims of this application, items indicated in the singular include cases where they are plural unless otherwise noted.

[0041] In addition, throughout the description of the invention and the claims of the present invention, "or" includes "and" unless otherwise noted. Therefore, "comprising A or B" means all three of the above cases: including A, including B, or including both A and B.

[0042] The present invention is described in detail with reference to the drawings and embodiments.

[0043] The bit automatic recognition assembly system according to the present invention allows for the process of fastening screws by mounting two or more different types of bits on a driver in a single assembly module.

[0044] To this end, a sensor capable of identifying a bit is provided in the bit holder and the driver, and the sensor checks the suitability of the bit mounted on the driver and the bit holder, and the number of bits mounted on the bit holder, and if a difference from the preset contents occurs during the screw fastening process, it can generate an alarm and control the driver so that it does not operate.

[0045] Specifically, the bit automatic recognition assembly system comprises a die on which a battery module or battery pack is placed, two or more types of bits for screw fastening to the battery module or battery pack, a bit mounting section on which the bits are mounted, at least one driver on which one of the bits is mounted, and a control section that controls the selection of a specific bit among the bits and the operation of the driver according to the steps of the screw fastening process, wherein the battery module or battery pack has two or more types of screw fastening sections formed therein and includes at least one of a first sensor that checks whether the bits in the bit mounting section are mounted according to the steps of the screw fastening process and a second sensor that checks whether the bit is mounted to the driver, and the operation of the driver can be controlled according to the signal of the sensor.

[0046] The first sensor includes a first-1 sensor located on the upper and / or side of a bit mounted on the bit mounting portion to check the length of the bit, identification marks on the bit, and the shape of the bit, and a first-2 sensor that checks whether the bit is mounted inside a groove of the bit mounting portion where the bit is mounted and detached.

[0047] The second sensor above can verify the identification mark on the bit and the shape of the bit, etc.

[0048] Vision sensors may be provided as the first and second sensors, and the type of bit can be identified using the vision.

[0049] The above two or more types of bits may include at least one identification element among a tag, barcode, color, recognition chip, shape of a groove on the side, number of grooves on the side, and difference in length of the bit as an identification mark to distinguish each bit.

[0050] Specifically, in the present invention, by using the identification markings of various bits as described above, the type of bit mounted on the bit holder and the driver, and whether they are properly mounted or mounted, can be verified.

[0051] As a first-1 embodiment, a vision sensor capable of recognizing the shape of a plurality of bits mounted on a bit holder, specifically the shape of the ends of the bits, is placed on the top of the bit holder, and the bits can be identified and the number of bits determined through the vision sensor.

[0052] If there are grooves or protrusions of a specific shape on the side of the bit, or if the number of said grooves or protrusions has an identifying meaning, the bit can be identified by confirming said grooves or protrusions and their number through a vision sensor.

[0053] If the observation area of ​​the vision sensor is wide enough to observe all bits mounted on the bit mounting portion, one vision sensor may be placed on a single bit mounting portion where multiple bits are mounted. Alternatively, a vision sensor dedicated to each bit and a bit may be placed in a 1:1 ratio.

[0054] This identification method does not require a separate identification element to be added to the bit, can be applied regardless of the length of the bit, and can be applied even when a plurality of bit mounting grooves are formed in the bit holder and the grooves are not specified for mounting a specific bit.

[0055] As a first-second embodiment, in the case where an identification mark is attached to each of the bits, if at least one of a tag, barcode, color mark, or recognition chip is attached to all bits, a reader capable of recognizing this can be used as the first sensor. By collecting the results of identifying the bits in this way, the type and number of bits mounted on the bit mounting unit can be determined.

[0056] When the reader is used as the first sensor mounted on the bit mounting section, depending on the observation area of ​​the reader, one reader may be placed on a single bit mounting section where multiple bits are mounted, or a vision sensor dedicated to each bit and a bit may be placed in a 1:1 ratio.

[0057] This identification method can also be applied even when a plurality of bit mounting grooves are formed in a bit holder and the grooves are not specified for mounting a specific bit.

[0058] In the first-third embodiment, the lengths of all bits may be different so that they can be distinguished from one another. The bits can be identified by applying a sensor capable of measuring the lengths of the bits as the first-1 sensor. In addition, the results of identifying the bits in this manner can be collected to determine the type and number of bits mounted on the bit holder.

[0059] The first-1 sensor mounted on the bit mounting portion may be positioned such that, depending on the observation area of ​​the first-1 sensor, one first-1 sensor is placed on a bit mounting portion where a plurality of bits are mounted, or a first-1 sensor dedicated to each bit may be positioned in a 1:1 ratio with the bits.

[0060] This identification method can also be applied even when a plurality of bit mounting grooves are formed in a bit holder and the grooves are not specified for mounting a specific bit.

[0061] The 1st-4th embodiment is a variation of the 1st-3rd embodiment, in which the lengths of the bits are all different and each bit is assigned a dedicated groove that matches 1:1 to the bit holder. By measuring the length of the bit mounted in the dedicated groove, the correctness or incorrectness of the bit mounted in the dedicated groove can be determined.

[0062] The first sensor is positioned differently depending on the length of each bit and forms a pair with a bit having a specific length. Therefore, the first sensor can determine whether the bit is mounted in a dedicated groove by measuring the length of the bit forming the pair.

[0063] For example, when two bits, consisting of a first bit and a second bit, are mounted on a bit holder, and the length of the first bit is 50 mm and the length of the second bit is 100 mm, the first-1 sensor applied to the first bit may be equipped with a laser and a detector, respectively, at heights of 45 mm and 55 mm of the top of the dedicated groove. The first-1 sensor applied to the second bit may be configured to be equipped with a laser and a detector, respectively, at heights of 95 mm and 105 mm of the top of the dedicated groove. In this case, the first-2 sensor is placed inside the groove of the bit holder so that it can determine whether the bit is mounted regardless of the type of bit.

[0064] When the first bit is mounted in the dedicated groove for the first bit, the laser at a height of 45 mm is blocked by the first bit, which is 50 mm long, so the laser detector at a height of 45 mm cannot detect the laser, but the laser at a height of 55 mm can be detected by the laser detector. Through this, it is possible to verify whether the first bit is correctly mounted in the dedicated groove.

[0065] When the second bit is installed in the first bit's dedicated slot, the 100 mm long second bit blocks not only the 45 mm high laser but also the 55 mm high laser, so neither the 45 mm high laser detector nor the 55 mm high laser detector can detect the laser. Through this, it can be seen that the bit is installed in the first bit's dedicated slot, but it can be confirmed that the correct bit is not installed.

[0066] When the second bit is installed in the dedicated groove for the second bit, the laser at a height of 95 mm is blocked by the second bit, which is 100 mm long, so the laser detector at a height of 95 mm cannot detect the laser, but the laser detector at a height of 105 mm can detect the laser. Through this, it is possible to verify whether the second bit is correctly installed in the dedicated groove.

[0067] When the first bit is installed in the second bit dedicated groove, the 50 mm long first bit does not block the 95 mm high laser and the 105 mm high laser, so the laser detector at 95 mm height as well as the laser detector at 105 mm height can detect the laser. At this time, the first-second sensor can clearly identify that the bit is installed in the second bit dedicated groove, so it is known that the bit is installed in the second bit dedicated groove, but it can be confirmed that the correct bit is not installed.

[0068] Even if the number of bits is three or more, the configuration can be expanded by continuously arranging laser detectors at short and long positions based on the height of bits of different lengths.

[0069] The 1-5th embodiment is identical to the 1-4th embodiment except that the 1-2 sensor is not placed inside the groove of the bit mounting portion but is placed at a position lower than the bit of the smallest length. By placing the 1-2 sensor on the same side as the 1-1 sensor, there is an advantage of easier installation.

[0070] The above 1-1, 1-2, and 1-3 embodiments can identify the type of bit, and thus, a separate sensor, the 1-2 sensor, which can verify whether the bit is mounted may not be necessary. However, by adding the 1-2 sensor, the abnormality can be checked redundantly.

[0071] As a method for verifying the correctness or incorrectness of a bit mounted on a driver using a second sensor mounted on the driver, the 2-1 embodiment may be a case where a vision sensor is applied as the second sensor. By using a vision sensor capable of recognizing the shape of the bit mounted on the driver, specifically the shape of the bit tip, it is possible to immediately determine not only whether the bit is identified but also whether it is mounted. In this case as well, as in the 1st embodiment, by adding a separate sensor that determines only whether a bit is mounted on the driver, the abnormality can be checked redundantly.

[0072] The 2-1 embodiment does not require a separate identification element to be added to the bit and can be applied regardless of the length of the bit.

[0073] At this time, only one driver may be positioned, and only one of the bits may be mounted on a single driver to enable screw fastening.

[0074] As a second-2nd embodiment, in the case where an identification mark is added to each of the bits, if at least one of a tag, barcode, color mark, or recognition chip is added to all bits, a reader capable of recognizing this can be used as a second sensor.

[0075] As a second or third embodiment, if there is a groove or protrusion of a specific shape on the side of the bit, or if the number of said groove or protrusion has an identification meaning, the bit can be identified by providing a sensor capable of sensing said groove or protrusion in the bit mounting part of the driver.

[0076] In this way, the identification element of the bit is detected by the first sensor in the bit mounting part and / or the second sensor in the driver, and an alarm can be generated if the bit suitable for the screw fastening process is not used.

[0077] When the screw fastening process is completed, if one or more bits are not installed in the grooves as a result of checking the bits detected by the first sensor, an alarm may be triggered. Since the bits must be "returned" to the bit holder when all operations are completed and when the fastening process for one type of screw is completed, if one or more bits are not installed in the grooves, it is possible that the bits are lost or that an error occurred where a different bit was used before.

[0078] The bit mounting portion is provided with grooves in which only one bit is mounted, and the grooves may be configured as dedicated grooves that match each bit in a 1:1 ratio. In detail, an alarm may be generated when, as a result of verifying the bit detected by the first sensor, two or more bits are not mounted in the grooves and / or when another bit is mounted in the dedicated groove formed in the bit mounting portion.

[0079] The above control unit can notify or prevent problems from occurring during the assembly process by controlling the driver so that it does not operate when an alarm occurs.

[0080] The first sensor transmits the result of verifying the bit for an empty groove among the dedicated grooves formed in the bit mounting portion to the control unit, and the control unit can control the driver so that it does not operate if the result of verifying the bit does not indicate a bit that matches the step of the screw fastening process.

[0081] FIG. 3 is a perspective view of a bit mounting portion and a sensor according to the 1st-6th embodiment, and FIG. 4 is a vertical cross-sectional view of FIG. 3. The 1st-6th embodiment is a modified version of some of the 1st-5th embodiments.

[0082] Referring to FIGS. 3 and 4, the bit mounting portion (200) is equipped with a first bit (210) and a second bit (220), and a first-1 sensor (310) and a first-2 sensor (330) for these are arranged therein.

[0083] The first-1 sensor (310) is located above the first bit (210), and the first-1 sensor (310) may be configured as a proximity sensor that emits a laser wavelength. The position of the part of the first-1 sensor (310) that emits the laser wavelength may be higher than the upper end of the first bit (210) and lower than the upper end of the second bit (220). Therefore, when the first bit (210) is mounted in the groove of the first bit (210), the state in which the proximity sensor does not detect the first bit (210) becomes the correct state, and when the second bit (220) is mounted in the groove of the first bit (210), the proximity sensor detects the second bit (220), which corresponds to the incorrect state in which the wrong bit is mounted in the dedicated groove of the first bit.

[0084] The first-2 sensor (330) is located on the lower side of each of the first bit (210) and the second bit (220) and can check whether the first bit (210) and the second bit (220) are mounted in the groove (201). Thus, it can check whether the bit suitable for the screw fastening process has been removed. In addition, when the screw fastening process is completed, it can check whether the first bit (210) and the second bit (220) are mounted in the two grooves (201), respectively. If the results measured by the first-1 sensor and the first-2 sensor are incorrect, an alarm may be generated, and the control unit may control the driver to prevent operation.

[0085] FIG. 5 is a cross-sectional view of a bit mounting portion and a sensor according to the 1-7th embodiment. The 1-7th embodiment is a modified version of the 1-5th embodiment in which only the configuration of the 1-1 sensor is changed.

[0086] Referring to FIG. 5, the bit mounting portion is equipped with a first bit (210) and a second bit (220), and a first-1 sensor (310, 320) and a first-2 sensor (330) for observing them are arranged. To increase the reliability of the sensors, the first-1 sensors may be provided in a number corresponding to the number of bits and placed on top of each bit.

[0087] Unlike as illustrated in FIGS. 3 and 4, in FIGS. 5, two first-1 sensors (310, 320) are placed at the first bit (210) and the second bit (220), respectively, so that the first-1 sensors (310, 320) and the first-2 sensors (330) can more accurately determine whether a bit is mounted and, accordingly, the number of mounted bits.

[0088] In the present invention, since the process of fastening two or more types of screws is carried out on a single process line, the screw fastening for the two or more types of screw fastening parts can be operated sequentially while the battery module or battery pack is placed on the die. At this time, a process of mounting and unmounting a bit on a dryer and a bit holder is required, and such a process can be carried out manually by an operator or by a robot.

[0089] A person skilled in the art to which the present invention pertains would be able to perform various applications and modifications within the scope of the present invention based on the above content. Explanation of the symbols

[0090] 10: Battery pack 100: Assembly Module 200: Bit holder 201: Home 210: 1st bit 220: 2nd bit 310, 320: Sensor 1-1 330: 1st-2nd sensor

Claims

Claim 1 A bit automatic recognition assembly system comprising: a die on which a battery module or battery pack is placed; two or more types of bits for screw fastening to the battery module or battery pack; a bit mounting portion on which the bits are mounted; at least one driver on which one of the bits is mounted; and a control portion that controls the selection of a specific bit among the bits and the operation of the driver according to a step of the screw fastening process, wherein the battery module or battery pack has two or more types of screw fastening portions formed therein, and includes at least one of a first sensor that checks whether the bits in the bit mounting portion are mounted according to a step of the screw fastening process and a second sensor that checks whether the bit is mounted to the driver, and the operation of the driver is controlled according to a signal of at least one of the first sensor and the second sensor, and the driver is one, and only one bit among the bits is mounted to the driver to perform screw fastening. Claim 2 In claim 1, the first sensor and the second sensor are each a bit automatic recognition assembly system capable of detecting the type of bits along with whether the bits are mounted and installed. Claim 3 In paragraph 2, the first sensor and the second sensor are a bit automatic recognition assembly system capable of detecting the types of the bits by vision. Claim 4 A bit automatic recognition assembly system according to claim 1, wherein at least one identification element among a tag, barcode, color, recognition chip, shape of a side groove, number of side grooves, and difference in bit length is applied to each bit to distinguish each of the bits. Claim 5 In paragraph 2, the bit automatic recognition assembly system generates an alarm when the bit detected by the first sensor and / or second sensor is not used for the corresponding screw fastening process, and the control unit controls the driver so that it cannot operate. Claim 6 In paragraph 2, an automatic bit recognition assembly system that generates an alarm when, upon completion of the screw fastening process, the result of verifying the bit detected by the first sensor indicates that one or more bits are not mounted on the bit mounting part. Claim 7 In paragraph 2, the bit mounting portion is provided with grooves in which each bit is mounted only once, and the grooves are configured as dedicated grooves that match each bit in a 1:1 ratio, thereby forming an automatic bit recognition assembly system. Claim 8 A bit automatic recognition assembly system according to claim 7, wherein if the result of verifying the bit detected by the first sensor is that two or more bits are not mounted in the groove and / or if another bit is mounted in the dedicated groove, the control unit controls the driver so that it cannot operate. Claim 9 In claim 7, the first sensor transmits the bit verification result for an empty groove among the dedicated grooves to the control unit, and the control unit controls the driver so that it does not operate if the bit verification result does not match the step of the screw fastening process. Claim 10 delete Claim 11 In claim 7, the first sensor is provided in a number corresponding to the number of bits, and the first sensor is an automatic bit recognition assembly system capable of determining whether a bit is mounted and, accordingly, the total number of mounted bits. Claim 12 In claim 11, the bits all have different lengths, and the first sensor is positioned differently according to the length of each bit and forms a pair with a specific bit, and the first sensor is an automatic bit recognition assembly system that checks whether the bit constituting the pair is mounted in a dedicated groove. Claim 13 A bit automatic recognition assembly system according to claim 1, wherein screw fastening for two or more types of screw fastening parts is operated sequentially while the battery module or battery pack is placed on the die. Claim 14 In claim 1, the bit automatic recognition assembly system in which mounting and removing the bit to the driver and the bit mounting part is performed manually or by a robot. Claim 15 A method of assembling a battery module or battery pack using a bit automatic recognition assembly system according to any one of claims 1 to 9 and claims 11 to 14.

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