Bending mechanism

Abstract

The application provides a bending mechanism and relates to the technical field of electronic device production. According to the bending mechanism provided in the application, when a battery monomer connected with a battery management unit reaches a position where the bending mechanism is located, a fixing assembly of the bending mechanism first clamps the battery management unit through a clamping member, and then a bending member of a bending assembly abuts against a tab connected between the battery management unit and the battery monomer. The abutment makes the tab bent to form a crease. According to the bending mechanism provided in the application, the bending member can be reset, and then the clamping member is driven by a rotating shaft of the fixing assembly to rotate around the axis of the rotating shaft, so that the position of the battery management unit in space relative to the battery monomer changes, and in turn, the tab between the battery monomer and the battery management unit is further bent along the crease formed previously. In this way, as the clamping member is rotated to the position by the rotating shaft, the bending of the tab is realized to the position.

Description

Technical Field

[0001] This application relates to the field of electronic equipment manufacturing technology, and in particular to a bending mechanism. Background Technology

[0002] In existing tab bending technology, existing bending equipment performs well for some small-sized BMU (Battery Management Unit) boards. However, as the size of the product increases, the size of the battery cell also increases due to power supply requirements, and the size of the BMU board also increases accordingly. Traditional bending mechanisms cannot demonstrate good stability when adapting to large-sized BMU boards, which will lead to deviations in the parallelism between the bent BMU board and the reference edge. Utility Model Content

[0003] In view of this, this application provides a bending mechanism, the purpose of which is to solve the above-mentioned technical problems to a certain extent.

[0004] This application provides a bending mechanism, the bending mechanism comprising:

[0005] A fixing assembly includes a rotating shaft and a clamping member connected to each other. The clamping member is capable of approaching the rotating shaft to clamp a battery management unit connected to a tab. The rotating shaft is rotatable and drives the clamping member to rotate synchronously with the rotating shaft.

[0006] A bending assembly, the bending assembly including a bending member for acting on the tab to create a crease on the tab.

[0007] Based on the above technical solutions, optionally, the bending mechanism further includes a displacement component, the displacement component comprising:

[0008] A first plate and a second plate are opposite each other in a predetermined direction, and the rotating shaft extends along the predetermined direction, with both ends of the rotating shaft rotatably connected to the first plate and the second plate, respectively.

[0009] A linear drive component is connected to both the first plate and the second plate, and the linear drive component drives the first plate, the second plate, and the fixing assembly to move along the predetermined direction.

[0010] Based on the above technical solutions, optionally, the bending mechanism further includes a lifting assembly, the lifting assembly is connected to the bending assembly, and the displacement assembly further includes a support plate located between the first plate and the second plate, the support plate is connected to the first plate and the second plate, the lifting assembly is disposed on the support plate, and the lifting assembly drives the bending assembly to move up and down.

[0011] Based on the above technical solutions, optionally, the lifting assembly includes:

[0012] Lifting drive components;

[0013] The lifting body is connected to the lifting drive component and also connected to the support plate;

[0014] The lifting body includes a groove recessed into the lifting body from its edge, a portion of the bending assembly is accommodated in the groove, and the portion of the bending assembly is capable of moving vertically relative to the groove.

[0015] Based on the above technical solutions, optionally, the bending mechanism further includes a rotary power assembly, which includes:

[0016] A transmission assembly, wherein the transmission assembly is connected to the rotating shaft in a transmission manner;

[0017] A rotating power component is fixedly connected to the lifting assembly. The rotating power component includes a power output end, which is connected to the transmission assembly. The rotating power component drives the transmission assembly to rotate the shaft.

[0018] Based on the above technical solutions, the fixing component may optionally include a clamping drive component connected to the rotating shaft. The clamping drive component has a drive end connected to the clamping component to drive the clamping component closer to the rotating shaft.

[0019] Based on the above technical solutions, optionally, the bending member can move along a bending direction that is inclined relative to the vertical direction, and the bending member is used to move toward the clamped battery management unit to abut the tab.

[0020] Based on the above technical solutions, optionally, the bending member includes a laser element, which is used to apply a laser to the clamped battery management unit to form a bending area on the clamped tab.

[0021] Based on the above technical solutions, optionally, the bending member includes an electromagnetic element, which is used to apply magnetic force to the clamped battery management unit to bend the tab.

[0022] Based on the above technical solutions, optionally, the clamping member is disposed in the middle section of the rotating shaft.

[0023] According to the bending mechanism provided in this application, it is possible to bend a single battery cell connected to a battery management unit. Specifically, the battery management unit is electrically connected to the tab of the single battery cell. When the single battery cell connected to the battery management unit arrives at the position of the bending mechanism, the fixing component of the bending mechanism first clamps the battery management unit by the clamping component. Then, the bending component of the bending component abuts against the tab connected between the battery management unit and the single battery cell. This abutment causes the tab to be bent to form a crease.

[0024] According to the bending mechanism provided in this application, the bending component can be reset, and then the clamping component is driven by the rotating shaft of the fixed component to rotate around the axis of the rotating shaft, so that the position of the battery management unit relative to the battery cell in space changes, thereby causing the tab between the battery cell and the battery management unit to be further bent along the previously formed crease, so that the clamping component is rotated into place as the rotating shaft drives it to achieve the bending of the tab in place.

[0025] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A schematic diagram of a three-dimensional bending mechanism provided according to an embodiment of this application is shown.

[0028] Figure 2 An exploded view of a bending mechanism provided according to an embodiment of this application is shown.

[0029] Figure label:

[0030] 100 - Fixed component; 110 - Rotating shaft; 120 - Clamping component; 130 - Clamping drive component;

[0031] 200 - Bending assembly; 210 - Bending component;

[0032] 300 - Displacement component; 310 - First plate; 320 - Second plate; 330 - Linear drive component; 340 - Bearing plate;

[0033] 400 - Lifting assembly; 410 - Lifting drive component; 420 - Lifting main body;

[0034] 500 - Rotary power assembly; 510 - Transmission assembly; 520 - Rotary power component; F - Predetermined direction. Detailed Implementation

[0035] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0038] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0039] According to an embodiment of this application, a bending mechanism is provided, which will be described below in conjunction with... Figure 1 and Figure 2 Describe in detail the structure and working principle of the bending mechanism.

[0040] According to the bending mechanism provided in the embodiments of this application, the bending mechanism includes a fixing component 100 and a bending component 200. In the embodiments, the fixing component 100 includes a rotating shaft 110 and a clamping member 120 connected to each other. The clamping member 120 can approach the rotating shaft 110 to clamp a battery management unit. The battery management unit is connected to a terminal tab. The rotating shaft 110 can rotate, thereby driving the clamping member 120 to rotate synchronously with the rotating shaft 110.

[0041] In one embodiment, the bending assembly 200 includes a bending member 210, which can be used to act on the tab to create a crease on the tab.

[0042] Thus, the bending mechanism provided according to the embodiments of this application can be bent for a single battery cell connected to a battery management unit. Specifically, the battery management unit is electrically connected to the tab of the single battery cell. When the single battery cell connected to the battery management unit arrives at the position of the bending mechanism, the fixing component 100 of the bending mechanism first clamps the battery management unit by the clamping component 120. Then, the bending component 210 of the bending component 200 abuts against the tab connected between the battery management unit and the single battery cell. This abutment causes the tab to be bent to form a crease.

[0043] According to the bending mechanism provided in the embodiments of this application, based on the above description, the bending member 210 can be reset, and then the clamping member 120 is driven by the rotating shaft 110 of the fixing component 100 to rotate around the axis of the rotating shaft 110, so that the position of the battery management unit relative to the battery cell in space changes, thereby causing the tab between the battery cell and the battery management unit to be further bent along the previously formed crease, so that the clamping member 120 is rotated into place as the rotating shaft 110 drives it to achieve the bending of the tab.

[0044] In the embodiments, the battery management unit mentioned above is essentially a BMS (Battery Management Unit). Specifically, the battery management unit may include a circuit board (e.g., a printed circuit board, i.e., a PCB) and multiple electrical components integrated on the circuit board. It should also be noted that conductive patterns are printed on the circuit board to form a circuit together with the aforementioned multiple electrical components.

[0045] In this embodiment, the battery cell may have a positive tab and a negative tab, which may be pre-connected to the battery management unit before the bending operation described above. Specifically, the positive tab and the negative tab may be electrically connected to the battery management unit via pads soldered onto the circuit board of the battery management unit.

[0046] Prior to this application, for larger battery cells, larger battery management units were adapted to be provided. However, when the battery management unit was folded into the battery cell in order to achieve the desired relative positional relationship between the battery management unit and the individual battery cells, the lack of guidance during the bending process caused a deviation in the parallelism between the larger battery management unit and the reference edge that needed to be overlapped after folding.

[0047] It should also be noted that during the process of folding the battery management unit towards the battery cell mentioned above, what is bent are the tabs connecting the battery management unit and the individual battery cells, namely the positive and negative tabs as shown above. In the embodiment, in other words, the battery management unit achieves its desired position after folding towards the individual battery cell by bending the tabs.

[0048] However, according to the bending mechanism provided in the embodiments of this application, before folding the battery management unit towards the cell, the bending member 210 applies force to the tab to bend the tab and form a crease. As a result, during the subsequent rotation of the pivot 110 and the clamping member 120, and in turn, the battery management unit rotates, the tab will be bent along the previously formed crease, thereby guiding the direction of the battery management unit and helping to ensure the parallelism between the battery management unit and the reference edge after folding.

[0049] It should be noted that, since the tabs between the battery management unit and the individual battery cells naturally bend during the folding process of the battery management unit towards the battery cell, the bending member 210 only needs to provide enough bending force to form a crease on the tab when applying force to bend it. In other words, the bending member 210 only needs to ensure that the tab achieves the bending range required to form the aforementioned crease. In this embodiment, this bending range or bending force can be obtained by pre-testing the bending member 210 with force applied to an unbent tab.

[0050] In an embodiment, the bending member 210 may utilize a linear drive structure, such as a linear motor, a lead screw nut, or a cylinder. As an example, in an embodiment, the linear drive structure may be, for example, a cylinder, and the bending member 210 may be, for example, a plate-like structure, utilizing the edge of the plate-like bending member 210 to bend the tab.

[0051] In this embodiment, the battery management unit can be jointly clamped using the pivot 110 and the clamping member 120. In this embodiment, the clamping member 120 can be used to clamp and release the battery management unit as it approaches and moves away from the pivot 110. In this embodiment, the clamping member 120 may have a body formed as a plate-like structure, and on the side of the body facing the battery management unit, such as the lower side of the body, multiple toothed structures, such as two, may be formed to press the battery management unit. In this embodiment, substantially, the clamping member 120 provides one surface for clamping the battery management unit, and the pivot 110 provides another surface for clamping the battery management unit, here, for example, the upper surface of the pivot 110.

[0052] It should also be noted that, in order to provide a better clamping effect on the rotating shaft 110, the upper surface of the rotating shaft 110 can be formed, for example, as a surface that adapts to the side of the battery management unit facing the rotating shaft 110. For example, the upper surface of the rotating shaft 110 can have a groove structure adapted to the battery management unit, a part of the battery management unit is accommodated in the groove structure and clamped by the clamping member 120 above it.

[0053] In this embodiment, the movement of the clamping member 120 can also be achieved by a linear drive structure, as detailed in the examples above. In this embodiment, the clamping drive member 130 that drives the clamping member 120 can be, for example, a cylinder. In this embodiment, the cylinder body can be connected to the rotating shaft 110, and the clamping member 120 can be connected to the end of the piston rod of the cylinder. That is, both the cylinder and the clamping member 120 are capable of rotating synchronously with the rotating shaft 110.

[0054] According to the bending mechanism provided in the embodiments of this application, the bending mechanism further includes a displacement component 300, which includes a first plate 310 and a second plate 320. In the embodiments, the first plate 310 and the second plate 320 are opposite to each other in a predetermined direction F (e.g., a first horizontal direction), and a rotating shaft 110 extends along the predetermined direction F. The two ends of the rotating shaft 110 are rotatably connected to the first plate 310 and the second plate 320, respectively. Here, the two ends of the rotating shaft 110 can be respectively inserted into the first plate 310 and the second plate 320, and the two ends of the rotating shaft 110 can be rotatably mounted on the first plate 310 and the second plate 320 via bearings, respectively.

[0055] In an embodiment, the bending mechanism may further include a linear drive member 330, which may be connected to both the first plate 310 and the second plate 320. The linear drive member 330 drives the first plate 310, the second plate 320, and the fixing assembly 100 to move along a predetermined direction F.

[0056] In an embodiment, a component may be provided that connects simultaneously to the first plate 310 and the second plate 320. A linear drive member 330 may be connected to such a component to simultaneously drive the first plate 310 and the second plate 320. In an embodiment, as an example, the linear drive member 330 may be, for example, an electric slide. In an embodiment, the aforementioned component connecting the first plate 310 and the second plate 320 may be, for example, the support plate 340 mentioned later, which will be specifically described in the subsequent description.

[0057] According to the bending mechanism provided in the embodiments of this application, the bending mechanism may further include a lifting component 400, which may be connected to the bending component 200. The displacement component 300 may further include a support plate 340 located between the first plate 310 and the second plate 320. The support plate 340 may be connected to the first plate 310 and the second plate 320. The lifting component 400 is disposed on the support plate 340, and the lifting component 400 drives the bending component 200 to move up and down.

[0058] Thus, according to the bending mechanism provided in this application embodiment, the first plate 310 and the second plate 320 can be connected to the support plate 340 in a detachable manner, such as by screw connection. In the embodiment, the lifting drive of the bending assembly 200 by the lifting assembly 400 and the adjustment of the position of the support plate 340 by the aforementioned linear drive member 330 enable the bending assembly 200 to be effectively adjusted in space to meet different bending requirements.

[0059] Specifically, according to the bending mechanism provided in the embodiments of this application, the lifting assembly 400 may include a lifting drive component 410 and a lifting body 420. In the embodiments, the lifting body 420 is connected to the lifting drive component 410, and the lifting body 420 is also connected to the support plate 340. As an example, the lifting body 420 may also be a plate, which may be erected on the support plate 340 and connected to the support plate 340 in a detachable manner, such as by screws.

[0060] In one embodiment, the lifting body 420 includes a groove recessed into the lifting body 420 from its edge, a portion of the bending assembly 200 is accommodated in the groove, and the portion of the bending assembly 200 is movable relative to the groove in a vertical direction.

[0061] In one embodiment, the groove may be formed on the side of the lifting body 420 facing the bending assembly 200. The groove may extend vertically, for example, and open at the top of the lifting body 420. In another embodiment, the bending assembly 200 may have a vertical plate for insertion into the groove. In yet another embodiment, the height of the vertical plate may be less than the length of the groove, allowing adjustment of the position of the vertical plate within the groove.

[0062] Specifically, a stop block (connected to the lifting body 420 by screws) can be connected to the top of the lifting body 420 to seal the top of the groove. Simultaneously, a screw can be provided for the bending assembly 200, which can pass through the stop block and be screwed into a threaded hole at the top of the upright plate. In this embodiment, when the upright plate is not connected to the lifting body 420, the height of the upright plate relative to the lifting body 420, i.e., the position of the upright plate within the groove, can be adjusted by tightening the screw.

[0063] In this embodiment, the vertical plate after the position adjustment can be fixed by using a screw that penetrates the bottom of the groove in the horizontal direction, that is, the waist-shaped hole of the lifting body 420 and the corresponding threaded hole on the vertical plate. The screw passes through the waist-shaped hole and is screwed into the corresponding threaded hole to fix the vertical plate, thereby achieving the adjustment of the height of the bending assembly 200.

[0064] According to the bending mechanism provided in the embodiments of this application, the bending mechanism may further include a rotary power assembly 500, which may include a transmission assembly 510 and a rotary power component 520.

[0065] In this embodiment, the transmission component 510 can be connected to the rotating shaft 110, and the rotating power component 520 can be fixedly connected to the lifting component 400. The rotating power component 520 can include a power output end, which can be connected to the transmission component 510. The rotating power component 520 drives the transmission component 510 to rotate the rotating shaft 110.

[0066] In an embodiment, as an example, the rotating power component 520 may be, for example, an electric motor, and the transmission component 510 may include, for example, two pulleys and a belt sleeved on their outer sides. In other words, the power output from the electric motor is transmitted to the rotating shaft 110 via belt drive, causing the rotating shaft 110 to rotate.

[0067] According to the bending mechanism provided in the embodiments of this application, the fixing component 100 may further include a clamping drive component 130, which may be connected to the rotating shaft 110. The clamping drive component 130 may have a drive end, which may be connected to the clamping component 120 to drive the clamping component 120 to approach the rotating shaft 110.

[0068] In an embodiment, the clamping drive member 130 may be, for example, a cylinder, and the cylinder body may be connected to the rotating shaft 110, for example, by a detachable connection such as bolts and nuts.

[0069] In an embodiment, the clamping member 120 may be, for example, a plate-like structure, and the piston rod of the cylinder may be connected to the clamping member 120 to drive the clamping member 120 closer to or further away from the rotating shaft 110.

[0070] According to the bending mechanism provided in the embodiments of this application, the bending member 210 is capable of moving along a bending direction that is inclined relative to the vertical direction. The bending member 210 is used to move toward the clamped battery management unit to abut against the tab connected to the clamped battery management unit.

[0071] In this embodiment, the tilting bending member 210 occupies less vertical space than the vertically moving bending member 210. As an example, the bending assembly 200 also has an inclined plate on the side of the upper plate away from the lifting body 420, and the cylinder structure driving the bending member 210 is disposed on this inclined plate.

[0072] According to the bending mechanism provided in the embodiments of this application, unlike the above example which uses abutment bending, the bending member 210 may include a laser element. The laser element can be used to apply a laser to the clamped battery management unit to form a bending area on the tab connected to the clamped battery management unit. That is, in this example, laser bending technology can be used to pre-bend the tab.

[0073] In another example, the bending member 210 may include an electromagnetic element for applying a magnetic force to the clamped battery management unit to bend it. Here, in this example, electromagnetic bending technology can be used to pre-bend the tabs.

[0074] In the embodiments, laser bending technology and electromagnetic bending technology are more likely to avoid bending damage to the tabs compared to bending methods that involve direct contact with the contacting component.

[0075] According to the bending mechanism provided in the embodiments of this application, the clamping member 120 is disposed in the middle section of the rotating shaft 110, which helps to ensure the quality of the electrode tab bending.

[0076] According to the bending mechanism provided in the embodiments of this application, after the pre-bending position is generated, the rotating power component 520 generates power, causing the entire mechanism to rotate while both ends are fixed, thereby achieving the effect of bending the electrode tab.

[0077] Furthermore, as another example, the bending assembly 200 can retain the aforementioned bending member 210 and control the movement of the bending member 210 by using a robotic arm to hold the bending member 210. The power control of the robotic arm can be configured, for example, as closed-loop logic control.

[0078] The above are merely preferred embodiments of this application and do not limit the scope of protection of this application. Any equivalent structural transformations made based on the innovative concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the scope of protection of this application.

Claims

1. A bending mechanism, characterized in that, The bending mechanism includes: A fixing assembly (100) includes a rotating shaft (110) and a clamping member (120) connected to each other. The clamping member (120) is able to approach the rotating shaft (110) to clamp a battery management unit connected to a tab. The rotating shaft (110) is rotatable and drives the clamping member (120) to rotate synchronously with the rotating shaft (110). A bending assembly (200) includes a bending member (210) for acting on the tab to create a crease on the tab.

2. The bending mechanism according to claim 1, characterized in that, The bending mechanism further includes a displacement component (300), the displacement component (300) comprising: A first plate (310) and a second plate (320) are opposite each other in a predetermined direction (F), and a rotating shaft (110) extends along the predetermined direction (F). The two ends of the rotating shaft (110) are rotatably connected to the first plate (310) and the second plate (320), respectively. A linear drive member (330) is connected to both the first plate (310) and the second plate (320), and the linear drive member (330) drives the first plate (310), the second plate (320) and the fixing assembly (100) to move along the predetermined direction (F).

3. The bending mechanism according to claim 2, characterized in that, The bending mechanism further includes a lifting assembly (400) connected to the bending assembly (200). The displacement assembly (300) further includes a support plate (340) located between the first plate (310) and the second plate (320). The support plate (340) is connected to the first plate (310) and the second plate (320) of the (300). The lifting assembly (400) is disposed on the support plate (340) and drives the bending assembly to move up and down.

4. The bending mechanism according to claim 3, characterized in that, The lifting assembly includes: Lifting drive component (410); The lifting body (420) is connected to the lifting drive component (410) and is also connected to the support plate (340). The lifting body (420) includes a groove recessed into the lifting body (420) from its edge, a portion of the bending assembly (200) is accommodated in the groove, and the portion of the bending assembly (200) is capable of moving vertically relative to the groove.

5. The bending mechanism according to claim 3, characterized in that, The bending mechanism further includes a rotary power assembly (500), which comprises: A transmission assembly (510) is connected to the rotating shaft (110) in a transmission manner; A rotating power component (520) is fixedly connected to the lifting assembly (400). The rotating power component (520) includes a power output end, which is connected to the transmission assembly (510). The rotating power component (520) drives the transmission assembly (510) to rotate the rotating shaft (110).

6. The bending mechanism according to any one of claims 1 to 5, characterized in that, The fixing assembly (100) further includes a clamping drive member (130) connected to the rotating shaft (110). The clamping drive member (130) has a drive end connected to the clamping member (120) to drive the clamping member (120) to approach the rotating shaft (110).

7. The bending mechanism according to any one of claims 1 to 5, characterized in that, The bending member (210) is capable of moving along a bending direction inclined relative to the vertical direction, and the bending member (210) is used to move toward the clamped battery management unit to abut the tab.

8. The bending mechanism according to any one of claims 1 to 5, characterized in that, The bending member (210) includes a laser element for applying a laser to the clamped battery management unit to form a bending region on the clamped tab.

9. The bending mechanism according to any one of claims 1 to 5, characterized in that, The bending member (210) includes an electromagnetic element for applying a magnetic force to the clamped battery management unit to bend the tab.

10. The bending mechanism according to any one of claims 1 to 5, characterized in that, The clamping member (120) is located in the middle section of the rotating shaft (110).

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