Bending device

Abstract

The utility model provides a bending device, and relates to the technical field of batteries. The bending device is used for bending a positive tab and a negative tab of the battery, and the positive tab and the negative tab are connected to one side of the battery protection plate. The bending device comprises a body, a supporting mechanism arranged on the body and a bending mechanism arranged on the body, the supporting mechanism comprises a first supporting piece and a second supporting piece which are arranged in a spaced mode, the first supporting piece is used for being supported on the positive electrode lug or the negative electrode lug, and the second supporting piece is used for being supported on the other side of the battery protection plate. And the bending mechanism is used for bending the positive tab or the negative tab. When the bending mechanism bends the positive tab, the first supporting piece is supported on the negative tab; and when the bending mechanism bends the negative tab, the first supporting piece is supported on the positive tab. According to the bending device provided by the invention, the risk that the battery protection plate is driven when the tab is bent can be reduced, the stress borne by the battery protection plate is reduced, and the stability of the battery protection plate is improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more particularly to a bending device. Background Technology

[0002] The information disclosed in this background section is intended only to enhance the understanding of the general background of this disclosure and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art.

[0003] During battery production, the positive and negative tabs are usually bent together when bending the tabs. This bending process can easily cause the battery protection board to be stressed and displaced, affecting production safety and yield. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a bending device that aims to solve the technical problem that the battery protection board is easily driven when the tab is bent, causing the battery protection board to be subjected to stress and displacement.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0006] Embodiments of this application provide a bending device for bending the positive and negative tabs of a battery, wherein the positive and negative tabs are connected to one side of a battery protection board, and the bending device includes:

[0007] ontology;

[0008] A support mechanism is provided on the main body. The support mechanism includes a first support member and a second support member that are spaced apart from each other. The first support member is used to support the positive electrode tab or the negative electrode tab, and the second support member is used to support the other side of the battery protection board.

[0009] A bending mechanism is provided on the body for bending the positive electrode tab or the negative electrode tab;

[0010] When the bending mechanism bends the positive electrode tab, the first support member supports the negative electrode tab; when the bending mechanism bends the negative electrode tab, the first support member supports the positive electrode tab.

[0011] In one embodiment, the support mechanism further includes a first drive component, a second drive component, and a connector. The connector is disposed on the body. The first drive component and the second drive component are respectively connected to the connector. The first drive component is connected to the first support component and is used to drive the first support component to move along a first direction. The second drive component is connected to the second support component and is used to drive the second support component to move along the first direction. The bending device further includes a third drive component and a positioning fixture for carrying the battery. The third drive component is disposed on the body and connected to the positioning fixture and is used to drive the positioning fixture to move along a second direction, which is perpendicular to the first direction.

[0012] In one embodiment, the orthographic projection areas of the first support member and the second support member on the projection plane at least partially overlap, and the projection plane is perpendicular to the first direction.

[0013] In one embodiment, the positioning fixture is provided with a limiting groove for placing the battery, and the positioning fixture is provided with a clearance opening, which is spaced apart from the limiting groove, and the clearance opening corresponds to the position of the second support member.

[0014] In one embodiment, the first support member is provided with a first flexible contact portion at one end near the second support member, the first flexible contact portion being used to contact the positive electrode tab or the negative electrode tab surface; and / or, the second support member is provided with a second flexible contact portion at one end near the first support member, the second flexible contact portion being used to contact the other side of the battery protection plate.

[0015] In one embodiment, the bending mechanism includes:

[0016] The fourth driving component is disposed on the main body;

[0017] A fifth driving component is disposed on the fourth driving component, and the fourth driving component is used to drive the fifth driving component to move along a third direction;

[0018] A sixth driving component is disposed on the fifth driving component, and the fifth driving component is used to drive the sixth driving component to move along a first direction, the first direction being perpendicular to the third direction;

[0019] A bending member is connected to the sixth drive assembly and has an axis parallel to the second direction. The bending member and the first support member are spaced apart, and the bending member and the second support member are spaced apart. The second direction is perpendicular to the first direction and the third direction. The sixth drive assembly is used to drive the bending member to rotate around the axis so that the bending member bends the positive tab or the negative tab.

[0020] In one embodiment, a shielding member is provided on the outer peripheral side of the bent member, and a first slotted photoelectric switch and a second slotted photoelectric switch are provided at intervals along the circumference of the bent member. The first slotted photoelectric switch and the second slotted photoelectric switch are used to cooperate with the shielding member to detect the angle at which the bent member bends the positive electrode or the negative electrode.

[0021] In one embodiment, the bending member includes a connecting portion and a bending portion, the connecting portion being connected between the bending portion and the sixth drive assembly, and the bending portion having an opening groove for accommodating the portion of the positive electrode tab to be bent or the portion of the negative electrode tab to be bent.

[0022] In one embodiment, the sixth drive assembly includes: a drive member; a reducer disposed on the fifth drive assembly and connected to the drive member; and a transmission assembly connected between the reducer and the bending member, wherein the drive member drives the reducer to drive the bending member to rotate about the axis via the transmission assembly.

[0023] In one embodiment, the transmission assembly includes: a first bevel gear connected to the bent member; and a second bevel gear connected to the reducer and meshing with the first bevel gear.

[0024] The beneficial effects of this application are as follows:

[0025] This application provides a bending device in which a first support member supports the negative electrode tab when the bending mechanism bends the positive electrode tab; and a first support member supports the positive electrode tab when the bending mechanism bends the negative electrode tab. This reduces the risk of the battery protection board being damaged during electrode tab bending, reduces the stress on the battery protection board, increases the stability of the battery protection board, and thus improves production safety and production yield.

[0026] 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

[0027] 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.

[0028] Figure 1 This illustration shows a schematic diagram of the bending device provided in one embodiment of the present application from a perspective.

[0029] Figure 2 It shows Figure 1 Enlarged structural diagram of region A in the middle;

[0030] Figure 3 This illustration shows a schematic diagram of the bending device provided in one embodiment of the present application from another perspective.

[0031] Figure 4 It shows Figure 3 A magnified structural diagram of region B in the middle;

[0032] Figure 5 This invention provides a schematic diagram of the support mechanism from one perspective according to an embodiment of the present application.

[0033] Figure 6 A schematic diagram of the bending mechanism provided in one embodiment of this application is shown from one perspective.

[0034] Explanation of key component symbols:

[0035] 100 - Bending device; 110 - Support mechanism; 111 - First support member; 112 - Second support member; 113 - First drive assembly; 114 - Second drive assembly; 115 - Connector; 120 - Bending mechanism; 121 - Fourth drive assembly; 122 - Fifth drive assembly; 123 - Sixth drive assembly; 1231 - Drive member; 1232 - Reducer; 1233 - Transmission assembly; 12331 - First bevel gear; 12332 - Second bevel gear; 124 - Bending Components; 1241-Connecting part; 1242-Bending part; 1243-Opening slot; 125-Shielding part; 126-First slot-type photoelectric switch; 127-Second slot-type photoelectric switch; 131-Positioning fixture; 1311-Limiting groove; 1312-Allowing opening; 132-Third drive assembly; 140-Body; 200-Battery; 210-Positive electrode tab; 220-Negative electrode tab; 230-Edge sealing; 300-Battery protection board; Z-First direction; Y-Second direction; X-Third direction. Detailed Implementation

[0036] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0037] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are 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, and therefore should not be construed as a limitation of this application.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0039] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0040] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0041] In the description of this application, the term "and / or" indicates that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. Additionally, the character " / " generally indicates that the preceding and following objects have an "or" relationship.

[0042] In the description of this application, "parallel" includes not only the case of absolute parallelism, but also the case of approximate parallelism as commonly understood in engineering; similarly, "perpendicular" also includes not only the case of absolute perpendicularity, but also the case of approximate perpendicularity as commonly understood in engineering. For example, if the angle between two directions is 80° to 90°, the two directions can be considered perpendicular; if the angle between two directions is 0° to 10°, the two directions can be considered parallel.

[0043] During battery production, the battery tabs are typically connected to a Protection Circuit Module (PCM) to protect the battery from abnormal conditions such as overcharging, over-discharging, overcurrent, and short circuits, thus ensuring the battery's safe and stable operation. Bending the tabs usually involves bending both the positive and negative tabs together. This bending process can easily cause stress on the PCM, leading to displacement and impacting production safety and yield.

[0044] like Figure 1 , Figure 3 and Figure 5 As shown, in order to solve the above-mentioned technical problems, the embodiments of this application provide a bending device 100 for bending the positive tab 210 and negative tab 220 of the battery 200. The positive tab 210 and negative tab 220 are connected to one side of the battery protection board 300. The bending device 100 includes a body 140, a support mechanism 110 and a bending mechanism 120.

[0045] The support mechanism 110 is mounted on the body 140 and includes a first support member 111 and a second support member 112 spaced apart from each other. The first support member 111 supports the positive tab 210 or the negative tab 220, and the second support member 112 supports the other side of the battery protection board 300, that is, the side of the battery protection board 300 away from the positive tab 210 and the negative tab 220. The bending mechanism 120 is mounted on the body 140 and is used to bend the positive tab 210 or the negative tab 220. When the bending mechanism 120 bends the positive tab 210, the first support member 111 supports the negative tab 220; when the bending mechanism 120 bends the negative tab 220, the first support member 111 supports the positive tab 210.

[0046] It should be noted that the "support" mentioned above can be direct or indirect support, without specific limitations. For example, the second support member 112 is used to support the other side of the battery protection board 300. This could mean the second support member 112 directly supports the battery protection board 300, or it could be... Figure 4 The second support member 112 shown is supported on the sealing edge 230 of the battery 200. Since the battery protection plate 300 is located on the sealing edge 230, the second support member 112 indirectly supports the battery protection plate 300 at this time. The support of the first support member 111 for the positive tab 210 and the negative tab 220 also includes direct support and indirect support, which will not be described in detail here.

[0047] It is understood that in the bending device 100 provided in this embodiment, when the bending mechanism 120 bends the positive electrode tab 210, the first support member 111 supports the negative electrode tab 220; when the bending mechanism 120 bends the negative electrode tab 220, the first support member 111 supports the positive electrode tab 210. This can reduce the risk of the battery protection board 300 being damaged when the electrode tab is bent, reduce the stress on the battery protection board 300, increase the stability of the battery protection board 300, thereby improving production safety and production yield.

[0048] like Figure 1 , Figure 4 and Figure 5 As shown, in one embodiment, the support mechanism 110 further includes a first drive component 113, a second drive component 114, and a connector 115. The connector 115 is disposed on the body 140. The first drive component 113 and the second drive component 114 are respectively connected to the connector 115. The first drive component 113 is connected to the first support component 111 and is used to drive the first support component 111 to move along the first direction Z. The second drive component 114 is connected to the second support component 112 and is used to drive the second support component 112 to move along the first direction Z. The bending device 100 further includes a third drive component 132 (the structure of the third drive component 132 is not shown in the figure) and a positioning fixture 131 for carrying the battery 200. The third drive component 132 is disposed on the body 140 and is connected to the positioning fixture 131 and is used to drive the positioning fixture 131 to move along the second direction Y. The second direction Y is perpendicular to the first direction Z.

[0049] Understandably, when the bending mechanism 120 bends the positive electrode tab 210, the third drive assembly 132 drives the positioning fixture 131 to move along the second direction Y, so that the negative electrode tab 220 is positioned between the first support member 111 and the second support member 112. The second drive assembly 114 drives the second support member 112 to move along the first direction Z to support it on the battery protection board 300, and the first drive assembly 113 drives the first support member 111 to move along the first direction Z to support it on the negative electrode tab 220, so as to reduce the impact on the battery protection board 300 when the positive electrode tab 210 is bent. The stress on the battery protection plate 300 is reduced when the bending mechanism 120 bends the negative electrode tab 220. When the bending mechanism 120 bends the negative electrode tab 220, the third drive assembly 132 drives the positioning fixture 131 to move along the second direction Y, so that the positive electrode tab 210 is positioned between the first support member 111 and the second support member 112. The second drive assembly 114 drives the second support member 112 to move along the first direction Z, thereby supporting it on the battery protection plate 300. The first drive assembly 113 drives the first support member 111 to move along the first direction Z, thereby supporting it on the positive electrode tab 210, thus reducing the stress on the battery protection plate 300 when the negative electrode tab 220 is bent. Furthermore, the orthographic projection areas of the first support member 111 and the second support member 112 on the projection plane at least partially overlap, and the projection plane is perpendicular to the first direction Z. This allows the support areas of the first support member 111 and the second support member 112 to overlap at least partially, reducing the possibility of leverage effects and thus providing better support for the tabs and battery protection plate 300, further reducing the stress on the battery protection plate 300 when the tabs are bent.

[0050] like Figure 3 and Figure 4 As shown, the positioning fixture 131 is further provided with a limiting groove 1311 for placing the battery 200. The positioning fixture 131 is provided with a clearance opening 1312, which is spaced apart from the limiting groove 1311. The clearance opening 1312 and the second support member 112 are positioned corresponding to each other.

[0051] It is understandable that the limiting groove 1311 can limit the battery 200, thereby positioning the battery 200. The clearance opening 1312 can prevent the second support member 112 from moving in the first direction Z, that is, it provides space for the second support member 112 to move in the first direction Z, so that the second drive assembly 114 can drive the second support member 112 to support the battery protection plate 300.

[0052] In one embodiment, the first support member 111 is provided with a first flexible contact portion at one end near the second support member 112, the first flexible contact portion being used to contact the positive electrode tab 210 or the negative electrode tab 220 surface; and / or, the second support member 112 is provided with a second flexible contact portion at one end near the first support member 111, the second flexible contact portion being used to contact the other side of the battery protection board 300.

[0053] For example, the side of the first support member 111 closest to the second support member 112 is a plane, and the side of the second support member 112 closest to the first support member 111 is also a plane. The positive electrode tab 210, the negative electrode tab 220, and the battery protection plate 300 all have planes, thereby enabling surface contact. Of course, curved surfaces can also be used; two congruent curved surfaces (with the same shape and curvature) can also achieve surface contact. No specific limitations are placed on the method of achieving surface contact here. For example, the material of the aforementioned flexible contact part can be elastic materials such as silicone, rubber, or sponge; no specific limitations are placed here.

[0054] Understandably, compared to point contact and line contact, the first support member 111 supports the positive tab 210 or negative tab 220 in a surface contact manner, and the second support member 112 supports the battery protection board 300 in a surface contact manner, which has higher support stability and can more effectively reduce the stress on the battery protection board 300 when the tabs are bent. At the same time, the first flexible contact portion makes the contact between the first support member 111 and the positive tab 210 or negative tab 220 flexible, and the second flexible contact portion makes the contact between the second support member 112 and the battery protection board 300 flexible. Compared to rigid contact, flexible contact can effectively reduce the possibility of damage to the positive tab 210, negative tab 220 and battery protection board 300.

[0055] like Figure 1As shown, in one embodiment, the bending mechanism 120 includes a fourth drive assembly 121, a fifth drive assembly 122, a sixth drive assembly 123, and a bending member 124. The fourth drive assembly 121 is disposed on the body 140, and the fifth drive assembly 122 is disposed on the fourth drive assembly 121. The fourth drive assembly 121 is used to drive the fifth drive assembly 122 to move along a third direction X. The sixth drive assembly 123 is disposed on the fifth drive assembly 122. The fifth drive assembly 122 is used to drive the sixth drive assembly 123 to move along the first direction Z. The first direction Z is perpendicular to the third direction X. The bending member 124 is connected to the sixth drive assembly 123 and has an axis parallel to the second direction Y. The bending member 124 and the first support member 111 are spaced apart. The bending member 124 and the second support member 112 are spaced apart. The second direction Y is perpendicular to the first direction Z and the third direction X. The sixth drive assembly 123 is used to drive the bending member 124 to rotate around the axis so that the bending member 124 bends the positive electrode tab 210 or the negative electrode tab 220.

[0056] Understandably, this explanation uses the bending of the positive electrode 210 as an example. The fourth drive component 121 drives the fifth drive component 122 to move along the third direction X, so that the bending component 124 moves closer to the positive electrode 210 along the third direction X. The fifth drive component 122 drives the sixth drive component 123 to move along the first direction Z, so that the bending component 124 moves closer to the positive electrode 210 along the first direction Z. The sixth drive component 123 drives the bending component 124 to rotate around its axis, thereby achieving bending of the positive electrode 210 by rotation.

[0057] like Figure 1 and Figure 2 As shown, a shielding member 125 is further provided on the outer peripheral side of the bent member 124, and a first slotted photoelectric switch 126 and a second slotted photoelectric switch 127 are provided at intervals along the circumference of the bent member 124. The first slotted photoelectric switch 126 and the second slotted photoelectric switch 127 are used to cooperate with the shielding member 125 to detect the angle at which the bent member 124 bends the positive electrode tab 210 or the negative electrode tab 220.

[0058] It should be noted that the slot-type photoelectric switch mentioned above has a U-shaped slot, an infrared transmitter, and an infrared receiver. The transmitter and receiver are located on opposite sides of the U-shaped slot. When the object being detected passes through the U-shaped slot and blocks the infrared light between the transmitter and receiver, the photoelectric switch will generate a detection signal.

[0059] It is understood that by providing a shielding member 125 on the outer periphery of the bent member 124, and by providing a first slotted photoelectric switch 126 and a second slotted photoelectric switch 127 at intervals along the circumference of the bent member 124, when the shielding member 125 passes through the U-shaped slot of the first slotted photoelectric switch 126 and the U-shaped slot of the second slotted photoelectric switch 127 respectively, the first slotted photoelectric switch 126 and the second slotted photoelectric switch 127 will generate detection signals respectively, thereby detecting the angle of rotation of the bent member 124 around its axis, so as to accurately bend the positive electrode 210 and the negative electrode 220.

[0060] like Figure 1 and Figure 6 As shown, the bending member 124 further includes a connecting part 1241 and a bending part 1242. The connecting part 1241 is connected between the bending part 1242 and the sixth drive assembly 123. The bending part 1242 is provided with an opening groove 1243, which is used to accommodate the part of the positive electrode tab 210 to be bent or the part of the negative electrode tab 220 to be bent.

[0061] Understandably, taking the bending of the negative electrode tab 220 as an example, when the part of the negative electrode tab 220 to be bent is located in the opening groove 1243, the sixth drive component 123 drives the connecting part 1241 to rotate the bending part 1242, thereby realizing the bending of the negative electrode tab 220.

[0062] like Figure 1 and Figure 6 As shown, the sixth drive assembly 123 further includes a drive member 1231, a reducer 1232, and a transmission assembly 1233. The reducer 1232 is disposed on the fifth drive assembly 122 and connected to the drive member 1231. The transmission assembly 1233 is connected between the reducer 1232 and the bending member 124. The drive member 1231 is used to drive the reducer 1232 so as to drive the bending member 124 to rotate around the axis through the transmission assembly 1233.

[0063] For example, the drive component 1231 can be a drive motor or other component capable of outputting torque, and the reducer 1232 can be a gear reducer, worm gear reducer, etc. No specific restrictions are placed on the types of the drive component 1231 and the reducer 1232 here.

[0064] It is understandable that the reducer 1232 can reduce speed and increase torque. The torque is transmitted to the bending member 124 through the transmission component, so that the bending member 124 can bend the positive tab 210 or the negative tab 220 with a larger torque, thereby stably bending the tab.

[0065] Of course, in the above-mentioned embodiment of the sixth drive assembly 123 including the drive member 1231, the reducer 1232 and the transmission assembly 1233, the sixth drive assembly 123 may also include the drive member 1231 and the rotating shaft, with the rotating shaft connected between the drive member 1231 and the bending member 124. The drive member 1231 drives the rotating shaft to rotate, which can also drive the bending member 124 to bend the positive electrode 210 or the negative electrode 220.

[0066] like Figure 1 , Figure 2 and Figure 6 As shown, the transmission assembly 1233 further includes a first bevel gear 12331 and a second bevel gear 12332. The first bevel gear 12331 is connected to the bent part 124, and the second bevel gear 12332 is connected to the reducer 1232 and meshes with the first bevel gear 12331.

[0067] For example, the bevel gear described above can be a bevel helical gear or a bevel spur gear, without any specific limitation.

[0068] It is understandable that the meshing of the first bevel gear 12331 and the second bevel gear 12332 facilitates the transmission of the torque of the reducer 1232 to the bending member 124, and the meshing of the two is at a right angle, which can reduce the space occupied by the sixth drive assembly 123 in a single direction, making the structure of the bending device 100 more compact.

[0069] Of course, in the above-mentioned embodiment of the bevel gear, the transmission assembly 1233 may also include a first universal joint and a second universal joint. The first universal joint is connected to the bending member 124, and the second universal joint is connected to the reducer 1232. The first universal joint and the second universal joint are rotatably connected, which can also transmit the torque of the reducer 1232 to the bending member 124. Furthermore, the rotatable connection can also reduce the space occupied by the sixth drive assembly 123 in a single direction, making the structure of the bending device 100 more compact.

[0070] It should be noted that, except for the sixth drive component 123, the first drive component 113, the second drive component 114, the third drive component 132, the fourth drive component 121 and the fifth drive component 122 can be linear motor modules, electric cylinders, slide cylinders and other devices that can output linear motion. No specific restrictions are placed on the type of these drive components here.

[0071] In summary, the main working principle of the bending device 100 provided in this application embodiment is as follows: the fourth driving component 121 drives the fifth driving component 122 to move along the third direction X, so that the bending component 124 moves closer to the positive electrode 210 and the negative electrode 220 along the third direction X; the fifth driving component 122 drives the sixth driving component 123 to move along the first direction Z, so that the bending component 124 moves closer to the positive electrode 210 and the negative electrode 220 along the first direction Z. When the negative electrode 220 is bent, the third drive assembly 132 drives the positioning fixture 131 to move along the second direction Y, so that the positive electrode 210 is positioned between the first support member 111 and the second support member 112, and the negative electrode 220 is positioned in the opening slot 1243 of the bending member 124. The second drive assembly 114 drives the second support member 112 to move along the first direction Z, so that the second support member 112 is supported on the side of the battery protection plate 300 away from the positive electrode 210 and the negative electrode 220. The first drive assembly 113 drives the first support member 111 to move along the first direction Z, so that the first support member 111 is supported on the positive electrode 210. The sixth drive assembly 123 drives the bending member 124 to rotate around its axis, so that the bending member 124 bends the negative electrode 220. When the positive electrode 210 is bent, the third drive assembly 132 drives the positioning fixture 131 to move along the second direction Y, so that the negative electrode 220 is positioned between the first support member 111 and the second support member 112, and the positive electrode 210 is positioned in the opening slot 1243 of the bending member 124. The second drive assembly 114 drives the second support member 112 to move along the first direction Z, so that the second support member 112 is supported on the side of the battery protection plate 300 away from the positive electrode 210 and the negative electrode 220. The first drive assembly 113 drives the first support member 111 to move along the first direction Z, so that the first support member 111 is supported on the negative electrode 220. The sixth drive assembly 123 drives the bending member 124 to rotate around its axis, so that the bending member 124 bends the positive electrode 210.

[0072] It should be understood that the above description of the working principle of the bending device 100 is merely illustrative. The movement sequence between the various components can be set according to design requirements, and no specific restrictions are placed on the movement sequence between the various components here.

[0073] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0074] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A bending apparatus characterized by comprising: The utility model relates to a bending device for the positive pole lug (210) and the negative pole lug (220) of a battery (200), the positive pole lug (210) and the negative pole lug (220) are connected on one side of a battery protection plate (300), the bending device comprises: A body (140); A supporting mechanism (110) is arranged on the body (140), the supporting mechanism (110) comprises a first supporting piece (111) and a second supporting piece (112) arranged at intervals, the first supporting piece (111) is used for supporting on the positive pole lug (210) or the negative pole lug (220), and the second supporting piece (112) is used for supporting on the other side of the battery protection plate (300); A bending mechanism (120) is arranged on the body (140) and is used for bending the positive pole lug (210) or the negative pole lug (220); When the bending mechanism (120) bends the positive pole lug (210), the first supporting piece (111) supports on the negative pole lug (220), and when the bending mechanism (120) bends the negative pole lug (220), the first supporting piece (111) supports on the positive pole lug (210).

2. The folding apparatus according to claim 1, wherein The supporting mechanism (110) further comprises a first driving assembly (113), a second driving assembly (114) and a connecting piece (115), the connecting piece (115) is arranged on the body (140), the first driving assembly (113) and the second driving assembly (114) are connected on the connecting piece (115) respectively, the first driving assembly (113) is connected with the first supporting piece (111) and is used for driving the first supporting piece (111) to move along a first direction (Z), the second driving assembly (114) is connected with the second supporting piece (112) and is used for driving the second supporting piece (112) to move along the first direction (Z), the bending device further comprises a third driving assembly (132) and a positioning jig (131) for carrying the battery (200), the third driving assembly (132) is arranged on the body (140) and is connected with the positioning jig (131) and is used for driving the positioning jig (131) to move along a second direction (Y), and the second direction (Y) is perpendicular to the first direction (Z).

3. The bending apparatus according to claim 2, characterized by The first supporting piece (111) and the second supporting piece (112) have at least partially overlapped normal projection areas on a projection plane, and the projection plane is perpendicular to the first direction (Z).

4. The bending apparatus according to claim 2, wherein The positioning jig (131) is provided with a limiting groove (1311) for placing the battery (200), and is provided with a avoiding opening (1312) arranged at intervals with the limiting groove (1311), and the avoiding opening (1312) and the second supporting piece (112) correspond in position.

5. The folding apparatus of claim 1, wherein The first support (111) is provided with a first flexible contact portion near one end of the second support (112), and the first flexible contact portion is used for surface contact with the positive electrode tab (210) or the negative electrode tab (220); and / or the second support (112) is provided with a second flexible contact portion near one end of the first support (111), and the second flexible contact portion is used for surface contact with the other side of the battery protection plate (300).

6. The folding apparatus according to any one of claims 1 to 5, wherein The bending mechanism (120) comprises: A fourth driving assembly (121) is arranged on the body (140); A fifth driving assembly (122) is arranged on the fourth driving assembly (121), and the fourth driving assembly (121) is used for driving the fifth driving assembly (122) to move along a third direction (X); A sixth driving assembly (123) is arranged on the fifth driving assembly (122), and the fifth driving assembly (122) is used for driving the sixth driving assembly (123) to move along a first direction (Z), and the first direction (Z) is perpendicular to the third direction (X); A bending piece (124) is connected to the sixth driving assembly (123) and has an axis parallel to a second direction (Y), and the bending piece (124) and the first support (111) are arranged in a spaced manner, and the bending piece (124) and the second support (112) are arranged in a spaced manner, and the second direction (Y) is perpendicular to the first direction (Z) and the third direction (X), and the sixth driving assembly (123) is used for driving the bending piece (124) to rotate around the axis, so that the bending piece (124) bends the positive electrode tab (210) or the negative electrode tab (220).

7. The bending apparatus according to claim 6, wherein An obstruction (125) is arranged on the outer circumferential side of the bending piece (124), and a first slot type photoelectric switch (126) and a second slot type photoelectric switch (127) are arranged on the bending piece (124) in a spaced manner along the circumferential direction, and the first slot type photoelectric switch (126) and the second slot type photoelectric switch (127) are used for cooperating with the obstruction (125) to detect the angle at which the bending piece (124) bends the positive electrode tab (210) or the negative electrode tab (220).

8. The bending apparatus according to claim 6, wherein The bending piece (124) comprises a connecting portion (1241) and a bending portion (1242), the connecting portion (1241) is connected between the bending portion (1242) and the sixth driving assembly (123), and an open slot (1243) is arranged on the bending portion (1242), and the open slot (1243) is used for accommodating the part to be bent of the positive electrode tab (210) or the part to be bent of the negative electrode tab (220).

9. The bending apparatus according to claim 6, wherein The sixth driving assembly (123) comprises: A driving piece (1231); A speed reducer (1232) is arranged on the fifth driving assembly (122) and connected with the driving piece (1231); A transmission assembly (1233) is connected between the speed reducer (1232) and the bending piece (124), and the driving piece (1231) is used to drive the speed reducer (1232) to drive the bending piece (124) to rotate around the axis through the transmission assembly (1233).

10. The bending apparatus according to claim 9, wherein The transmission assembly (1233) comprises: A first bevel gear (12331) connected to the bending piece (124); A second bevel gear (12332) connected to the speed reducer (1232) and meshing with the first bevel gear (12331).

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