Battery jig fastening device

Abstract

The present disclosure relates to a battery jig fastening device comprising: a pair of fastening parts for fastening a rotating member to a battery jig; a pair of arm parts detachably coupled to the pair of fastening parts, respectively; and a transfer part for moving the pair of arm parts in a direction away from or closer to the battery.

Description

Battery jig fastening device

[0001] The present disclosure relates to a battery jig fastening device.

[0002] Unlike primary batteries that cannot be recharged, secondary batteries are capable of charging and discharging, and are applied not only to portable devices but also to electric vehicles (EVs) and hybrid electric vehicles (HEVs) driven by electric power sources.

[0003] Secondary batteries can be classified into cylindrical batteries, prismatic batteries, and pouch-type batteries. Pouch-type batteries may include an outer casing that accommodates an electrode assembly inside and covers the outer surface.

[0004] Secondary batteries can be fastened to a jig during the manufacturing or performance evaluation process. The jig can apply pressure to the outer casing by placing it between the casings and pressing both sides of the casings. In this process, it is important that the surface pressure applied by the jig is uniform.

[0005] Secondary batteries can be formed in various sizes considering performance, lifespan, and stability. To pressurize secondary batteries manufactured in various sizes, the size of the jig can also be varied.

[0006] The problem that the present disclosure aims to solve is to provide a battery jig fastening device capable of fastening a battery jig that uniformly presses the battery.

[0007] In addition, it provides a battery jig fastening device that can be applied to battery jigs of various sizes.

[0008] However, the technical problems that the present invention aims to solve are not limited to those described above, and other unmentioned problems will be clearly understood by a person skilled in the art from the description of the invention below.

[0009] A battery jig fastening device according to the present disclosure may include: a pair of fastening parts for fastening the rotating member to the battery jig; a pair of arm parts each detachably coupled to the pair of fastening parts; and a transfer part for moving the pair of arm parts in a direction away from or closer to the battery.

[0010] The above transfer unit may include a support body that extends along one direction to guide the position of the pair of arms; and a driving unit that moves the pair of arms to the same height.

[0011] The above driving unit is provided as a pair, and the pair of driving units can be connected to each of the pair of arm units.

[0012] The above driving unit may be a pulley.

[0013] The above pair of arm portions each include a plurality of segments extending along one direction; and a rotation axis portion connecting the plurality of segments; and at least some of the plurality of segments may be rotatable around the rotation axis portion.

[0014] It may further include a connecting body that connects the pair of arms so that the heights of the pair of arms are maintained equally.

[0015] One end of each of the above pair of arm portions may be located inside the connecting body.

[0016] The above connecting body can cover the upper and lower ends of each of the pair of arm portions, respectively.

[0017] The above transfer unit can be connected to the above connecting body.

[0018] It may further include a press part that presses the above battery.

[0019] When the above press part presses the battery, the above pair of fastening parts can each fasten the rotating member.

[0020] The above pair of fastening parts can be fastened to the battery by rotating the rotating member.

[0021] When the above pair of fastening parts fasten by rotating the rotating member, the fastening torque applied to the rotating member may be the same.

[0022] The above pair of fastening members can simultaneously fasten a rotating member corresponding to each of the pair of fastening members among the plurality of fixed members.

[0023] According to one embodiment of the present disclosure, a battery jig fastening device capable of fastening a battery jig that uniformly presses a battery can be provided.

[0024] In addition, a battery jig fastening device applicable to battery jigs of various sizes can be provided.

[0025] However, the effects obtainable through the present invention are not limited to those described above, and other unmentioned technical effects will be clearly understood by a person skilled in the art from the description of the invention below.

[0026] Figure 1 illustrates the state in which a battery is pressurized by a battery jig.

[0027] FIG. 2 illustrates a battery jig fastening device according to one embodiment of the present disclosure, viewed from the top surface.

[0028] FIG. 3 illustrates a portion of a transfer unit and a pair of arm portions according to one embodiment of the present disclosure.

[0029] FIG. 4 illustrates a front view of a battery jig fastening device according to one embodiment of the present disclosure.

[0030] FIG. 5 illustrates a side view of a battery jig fastening device according to one embodiment of the present disclosure.

[0031] Figure 6 illustrates a pair of fastening parts fastening a rotating member.

[0032] Figure 7 shows the surface pressure applied to the battery when using a conventional device.

[0033] FIG. 8 shows the surface pressure applied to a battery when using a battery fastening device according to one embodiment of the present disclosure.

[0034] Hereinafter, the present disclosure will be described in detail with reference to the attached drawings. However, this is merely illustrative and the present disclosure is not limited to the specific embodiments described illustratively.

[0035] Specific terms used in this specification are for convenience of explanation only and are not intended to limit the exemplified embodiments.

[0036] For example, expressions such as "identical" and "to be identical" indicate not only a strictly identical state, but also a state where tolerances or differences exist in the degree to which the same function is obtained.

[0037] For example, expressions indicating relative or absolute arrangements, such as "in a certain direction," "along a certain direction," "parallel," "perpendicular," "to the center," "concentric," or "coaxial," not only strictly represent such arrangements but also indicate a state of relative displacement with respect to tolerances or angles or distances to which the same function is obtained.

[0038] To explain the present disclosure, the following description is based on a spatial orthogonal coordinate system formed by mutually orthogonal X-axis, Y-axis, and Z-axis. Each axis direction (X-axis direction, Y-axis direction, Z-axis direction) refers to the two directions in which each axis extends.

[0039] The X, Y, and Z directions mentioned below are for the purpose of explanation to ensure a clear understanding of the present disclosure, and it goes without saying that each direction may be defined differently depending on where the reference is placed.

[0040] The use of terms such as 'first, second, third' attached to the components mentioned below is intended solely to avoid confusion regarding the components being referred to, and is unrelated to the order, importance, or master-subordinate relationship between the components. For example, an invention including only the second component without the first component can be implemented.

[0041] The terms used in this disclosure are for the description of specific embodiments and are not intended to limit the claims. As used in the description of embodiments and in the appended claims, the singular form is intended to include the plural form unless the context clearly indicates otherwise.

[0042]

[0043] Figure 1 illustrates the battery (10) being pressurized by a battery jig (500).

[0044] The battery (10) may be a secondary battery that can be used repeatedly by charging and discharging electrical energy. For example, it may refer to a lithium secondary battery or a lithium-ion battery, but is not limited thereto. As another example, it may refer to a solid-state battery.

[0045] The above battery (10) may include an electrode assembly. The electrode assembly may include a positive electrode and a negative electrode. The electrode assembly may convert chemical energy into electrical energy through a redox reaction between the positive electrode and the negative electrode.

[0046] The battery (10) may further include an outer casing that accommodates the electrode assembly inside. The outer casing may include a material with high mechanical strength to protect the battery (10) from external impact. For example, the outer casing may include an aluminum layer. After inserting the electrode assembly inside the outer casing, the battery (10) can be sealed.

[0047] The battery (10) can be pressed and fixed by the battery jig (500). After the battery (10) is placed between the battery jigs (500), the battery jig (500) can press the battery (10). The battery jig (500) can apply pressure to both sides of the battery (10).

[0048] The battery jig (500) may include a first plate (510) and a second plate (520). The first plate (510) and the second plate (520) may be provided side by side with each other. The battery (10) may be placed between the first plate (510) and the second plate (520). The first plate (510) may press one side of the battery (10), and the second plate (520) may press the other side of the battery (10).

[0049] At least one of the first plate (510) and the second plate (520) may be movably provided. In an embodiment, the second plate (520) may move toward the first plate (510), thereby pressurizing the battery (10). In another embodiment, the first plate (510) and the second plate (520) may move closer to each other or move further apart.

[0050] The battery jig (500) may further include an extension member (530) and a rotation member (540). The extension member (530) extends along one direction and can penetrate at least a portion of each of the first plate (510) and the second plate (520). In an embodiment, the extension member (530) can penetrate the second plate (520).

[0051] The rotating member (540) may be located at one end of the extension member (530). The rotating member (540) may rotate and move toward the center of the extension member (530). By moving the rotating member (540), the second plate (520) and the first plate (510) may be moved closer to or further apart from each other. In an embodiment, by rotating the rotating member (540) clockwise, the second plate (520) may move toward the first plate (510), thereby pressurizing the battery (10). By rotating the rotating member (540) counterclockwise, the pressurization of the battery (10) may be released.

[0052] Referring to FIG. 1, the battery (10) is placed between the first plate (510) and the second plate (520), and then the rotating member (540) can be rotated. Meanwhile, when the battery (10) is pressurized, a uniform surface pressure must be applied to the battery (10). The battery jig fastening device (1) of the present disclosure can apply a uniform surface pressure to the battery (10) when the battery (10) is fastened to the battery jig (500). Through this, the lifespan and performance of the battery (10) can be improved. In addition, when the battery jig fastening device (1) of the present disclosure is used for evaluating the performance of the battery, the accuracy of the measurement results is improved and the measurement can be performed quickly.

[0053] FIG. 2 illustrates a top view of a battery jig fastening device (1) according to one embodiment of the present disclosure.

[0054] The battery jig fastening device (1) of the present disclosure may include: a pair of fastening parts (100) for fastening the rotating member (540) to the battery jig (500); a pair of arm parts (200) each detachably coupled to the pair of fastening parts (100); and a transfer part (300) for moving the pair of arm parts (200) in a direction away from or closer to the battery (10).

[0055] The above pair of fastening parts (100) can fasten the rotating member (540) to the battery jig (500). The rotating member (540) may be positioned at one end of the above pair of fastening parts (100), and the above pair of fastening parts (100) may rotate the rotating member (540). The fastening of the above pair of fastening parts (100) to the rotating member (540) will be explained in detail below with reference to FIG. 6.

[0056] Referring to FIG. 2, a pair of fastening parts (100) can be detachably coupled to a pair of arm parts (200). The pair of arm parts (200) can be referred to as a first arm part and a second arm part, respectively, and the pair of fastening parts (100) can be referred to as a first fastening part and a second fastening part, respectively. The first fastening part can be coupled to the first arm part, and the second fastening part can be coupled to the second arm part.

[0057] The pair of fastening parts (100) can be each connected to one end of each of the pair of arm parts (200). The position of one end of each of the pair of arm parts (200) can be freely changed. Referring to FIG. 1, the pair of arm parts (200) can be moved to any point on the XY plane.

[0058] If the size of the battery (10) changes, the size of the battery jig (500) must also change. Since the battery jig fastening device (1) of the present disclosure allows a pair of arm portions (200) to move freely, it can be applied to battery jigs (500) having various sizes.

[0059] The above transfer unit (300) can move the above pair of arm portions (200) in a direction away from or closer to the battery jig (500). Here, the direction away from or closer to the battery jig (500) may mean a direction away from or closer to one side of the battery jig (500). Referring to FIG. 2, the direction away from or closer to the battery jig (500) may mean a direction parallel to the Z-axis direction. After the above pair of fastening portions (100) are coupled to the above pair of arm portions (200), the above pair of arm portions (200) can be moved so as to be closer to the battery jig (500), and the above pair of fastening portions (100) can fasten the rotating member (540) to the battery jig (500). After the fastening is completed, the above pair of arm portions (200) can be moved away from the battery jig (500). After the process of connecting a plurality of rotating members (540) is completed, the pair of connecting parts (100) can be separated from the pair of arm parts (200).

[0060] Meanwhile, the pair of arms (200) may have the same height. Here, the same height may mean being spaced apart from the battery jig (500) by the same distance. By having the pair of arms (200) the same height, the pair of arms (200) can simultaneously fasten the rotating member (540).

[0061] FIG. 3 illustrates a portion of a transfer unit (300) and a pair of arm units (200) according to one embodiment of the present disclosure, FIG. 4 illustrates a front view of a battery jig fastening device (1) according to one embodiment of the present disclosure, and FIG. 5 illustrates a side view of a battery jig fastening device (1) according to one embodiment of the present disclosure.

[0062] The above transfer unit (300) may include a support body (310) and a driving unit (320). The support body (310) may extend along one direction to guide the position of the pair of arms (200). That is, the pair of arms (200) may move along the direction in which the support body (310) extends.

[0063] The driving unit (320) can move the pair of arms (200) to the same height. Referring to FIG. 2, the pair of arms (200) can move along the support body (310). The support body (310) can be extended in a direction away from or closer to the battery jig (500).

[0064] The support body (310) may be extended in a direction away from or closer to one side of the battery jig (500). The support body (310) may be extended in a direction parallel to the Z-axis direction, and the pair of arms (200) may move along the Z-axis direction. FIG. 2 illustrates only one of the pair of arms (200). Referring to FIG. 1 and FIG. 2, two support bodies (310) may be provided, and the pair of arms (200) may be connected to each of the two support bodies (310).

[0065] The above pair of arm portions (200) may each include a plurality of joint portions (210) and a rotation axis portion (220). At least some of the plurality of joint portions (210) may be rotatable around the rotation axis portion (220). The plurality of joint portions (210) may be connected to each other through the rotation axis portion (220). The above pair of arm portions (200) may further include an arm connection portion (230). The arm connection portion (230) may connect the above pair of arm portions (200) and the support body (310). The arm connection portion (230) may move along the direction in which the support body (310) extends.

[0066] Ultimately, the above pair of female parts (200) may have a structure in which the female connecting part (230), the joint part (210), the rotation axis part (220), and the joint part (210) are connected. The female connecting part (230) may be located at one end of the joint part (210) connected to the support body (310), and a fastening part may be attached to the other end. The plurality of joint parts (210) may rotate through the rotation axis part (220) so that the position of the fastening part can move freely in a plane (e.g., XY plane).

[0067] The axial direction of the rotational shaft portion (220) may be parallel to the direction in which the support body (310) extends. Referring to FIG. 3, the axial direction of the rotational shaft portion (220) may be parallel to the Z-axis direction. Two segments (210) may be connected, and one segment (210) may be connected to the support body (310) and the other segment (210) may be connected to the fastening portion. Additionally, the two segments (210) may be connected to each other by the rotational shaft portion (220).

[0068] The above driving unit (320) is provided in a pair, and the pair of driving units (320) can each be connected to the pair of arm parts (200). The pair of arm parts (200) can each be moved by each of the pair of driving units (320).

[0069] Referring to FIGS. 4 and 5, the support body (310) may be provided in a pair, and the driving unit (320) may also be provided in a pair. Each of the driving units (320) may be coupled to the pair of support bodies (310) and may move each of the pair of arm parts (200). The driving unit (320) may be a pulley.

[0070] The battery jig fastening device (1) of the present disclosure may further include a connecting body (400). The connecting body (400) may connect the pair of arm portions (200) so that the height of the pair of arm portions (200) is maintained at the same level.

[0071] One end of each of the pair of female parts (200) may be located inside the connecting body (400). Here, one end of each of the pair of female parts (200) may be the female connecting part (230).

[0072] In an embodiment, the connecting body (400) may be in the form of a box with the front and rear open. One end of each of the pair of arms (200) may be located inside the box shape. In another embodiment, the connecting body (400) may cover the upper and lower ends of each of the pair of arms (200). This allows the pair of arms (200) to move while maintaining the same height. The shape of the connecting body (400) is not limited thereto as long as the pair of arms (200) can be moved while maintaining the same height.

[0073] Referring to FIGS. 4 and 5, the transfer unit (300) can be connected to the connecting body (400). Specifically, the driving unit (320) can be connected to the connecting body (400). By moving the connecting body (400), the height of the pair of arm members (200) can be adjusted. The position of the pair of arm members can be adjusted to be closer to or further away from the battery (10). In this case, since the position of each of the pair of arm members (200) is the same, the rotating member (540) can be fastened simultaneously.

[0074] The battery fastening device (1) of the present disclosure may further include a press part (600). The press part (600) may press the battery jig (500). The press part (600) may press one side of the battery jig (500). One side of the press part (600) may be provided flat. Through this, the press part (600) can apply uniform surface pressure to the battery jig (500).

[0075] After the battery jig (500) is pressed by the press unit (600), the rotating member (540) can be fastened to the battery jig (500). Through this, the battery jig (500) can apply pressure uniformly to the battery (10).

[0076] In an embodiment, the battery jig fastening device (1) may further include a receiving member. The support body (310) may be fixed to the receiving member. The receiving member may be formed in a plate shape and provided in a 'U' shape. The battery jig (500) may be placed inside the U-shape. This allows the movement of each component of the battery jig fastening device (1) to be not restricted.

[0077] FIG. 6 illustrates a pair of fastening parts (100) fastening a rotating member (540).

[0078] Referring to FIG. 6, when the press unit (600) presses the battery jig (500), the pair of fastening units (100) can each fasten the rotating member (540). To fasten the rotating member (540), the pair of fastening units (100) may be positioned on the battery (10). The pair of fastening units (100) can fasten the rotating member (540) to the battery jig (500) by rotating it. The pair of fastening units (100) may be torque drivers. When the pair of fastening units (100) fasten the rotating member (540) by rotating it, the fastening torque applied to the rotating member (540) may be the same. As a result, even if the fastening operation is performed repeatedly, a uniform surface pressure can be applied to the battery jig (500).

[0079] A torque meter may be used to maintain a consistent tightening torque. The tightening operation can proceed after the value of the torque driver is verified.

[0080] The above-mentioned rotating member (540) may be provided in multiple numbers. The above-mentioned pair of fastening parts (100) can simultaneously fasten the rotating member (540) corresponding to each of the above-mentioned pair of fastening parts (100) among the above-mentioned rotating members (540). In an embodiment, when six rotating members (540) need to be fastened to the battery (10), the above-mentioned pair of fastening parts (100) can each fasten a total of two rotating members (540) simultaneously. After the above-mentioned pair of fastening parts (100) each fasten one rotating member (540), each of the above-mentioned pair of fastening parts (100) can simultaneously fasten another rotating member (540).

[0081] At this time, the pair of fastening parts (100) can simultaneously fasten the rotating member (540) with the same fastening torque. As a result, a uniform surface pressure can be applied to the battery (10).

[0082] FIG. 7 shows the surface pressure applied to the battery (10) when using a conventional device, and FIG. 8 shows the surface pressure applied to the battery (10) when using a battery connection device (1) according to one embodiment of the present disclosure. Specifically, FIG. 7 and FIG. 8 show the surface pressure applied to the battery (10) after connection, respectively.

[0083] Referring to FIG. 7, it is confirmed that when the fastening process is carried out using a conventional pre-fastening device, the surface pressure is uneven. Referring to FIG. 8, it is confirmed that the surface pressure is applied uniformly to the battery (10) by using the battery jig fastening device (1) of the present disclosure.

[0084] The present disclosure may be modified and implemented in various forms, and the scope of rights is not limited to the embodiments described above. The contents described above are merely examples applying the principles of the present disclosure, and other configurations may be further included without departing from the scope of the present invention.

[0085] [Explanation of the symbol]

[0086] 100: A pair of connecting parts 200: A pair of female parts

[0087] 300: Transfer unit 310: Support body

[0088] 320: Drive unit 400: Connecting body

Claims

1. A battery jig fastening device for fastening a battery jig that pressurizes a battery, A pair of fastening parts for fastening a rotating member to the battery jig; A pair of arm portions each detachably coupled to the above pair of fastening portions; and A battery jig fastening device comprising: a transfer unit that moves the above pair of arm portions in a direction away from or closer to the battery.

2. In Paragraph 1, The above transfer unit A support body extending along one direction to guide the position of the pair of arms; and A battery jig fastening device comprising: a driving unit that moves the above pair of arm portions to the same height.

3. In Paragraph 2, A battery jig fastening device in which the above driving unit is provided in a pair, and the pair of driving units are each connected to the pair of arm units.

4. In Paragraph 2, The above driving unit is a pulley-type battery jig fastening device.

5. In Paragraph 1, The above pair of dark parts each Multiple segments extending along one direction; and It includes a rotating shaft connecting the plurality of nodes mentioned above; and A battery jig fastening device in which at least some of the plurality of segments are rotatable around the above-mentioned rotational axis.

6. In Paragraph 1, A battery jig fastening device further comprising a connecting body that connects the pair of arms so that the height of the pair of arms is maintained at the same level.

7. In Paragraph 6, One end of each of the above pair of arm portions is a battery jig fastening device located inside the above connecting body.

8. In Paragraph 6, The above connecting body is a battery jig fastening device that covers the upper and lower ends of each of the pair of arm portions, respectively.

9. In Paragraph 6, The above transfer unit is a battery jig fastening device connected to the above connecting body.

10. In Paragraph 1, A battery jig fastening device further comprising a press part for pressing the above-mentioned battery.

11. In Paragraph 10, When the above press unit presses the above battery, A battery jig fastening device in which the above pair of fastening parts each fasten the above rotating member.

12. In Paragraph 1, The above pair of fastening parts is a battery jig fastening device that fastens to the battery by rotating the rotating member.

13. In Paragraph 12, A battery jig fastening device in which the same fastening torque is applied to the rotating member when the above pair of fastening parts fasten by rotating the rotating member.

14. In Paragraph 1, A battery jig fastening device comprising a plurality of rotating members, wherein a pair of fastening members simultaneously fasten a rotating member corresponding to each of the pair of fastening members among the plurality of rotating members.

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