Jig for flattening roll core
By designing a fixture for flattening the roll core, the limit groove and avoidance hole structure of the seat body assembly and cover body assembly are used to solve the problem of rolling offset during the flattening process, ensuring that the pole ear plane is parallel to the core body, improving the safety of the battery and the efficiency of the flattening equipment.
Patent Information
- Application Number
- CN202422197786.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-06
AI Technical Summary
In the prior art, the core is prone to rolling and offset during flattening, resulting in the plane of the electrode tip and the plane of the core main body, causing damage to the electrode tip and affecting the safety of the battery.
A fixture for flattening the core is designed, including a seat body assembly and a cover body assembly. The seat body assembly is provided with a load-bearing groove and a limiting groove. The cover body assembly can be movably switched to limit the rolling core. Through the cooperation of the limiting groove and the cover body assembly, the pole ear plane is ensured to be parallel to the core body.
It effectively avoids the cracks and damage of the electrode during packaging, improves the safety of battery use, and improves the efficiency of flattening equipment.
Smart Images
Figure CN223113961U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of core forming, and particularly relates to a jig for flattening a core. Background Art
[0002] A core generally includes a core body, a positive tab and a negative tab, and the positive tab and the negative tab are respectively arranged at two ends of the core body. The existing core body is cylindrical before being flattened. When the core body is flattened, the core body is placed in a bearing groove of a jig. Since the core body is prone to rolling and offset, the core body cannot be stably installed in the bearing groove, resulting in that after the core body is flattened, the plane with the largest surface area of the positive tab or the plane with the largest surface area of the negative tab is not parallel to the plane of the core body. After the core is encapsulated, the positive tab or the negative tab is folded, the tab glue is damaged, the internal structure of the battery is damaged, and the use safety of the battery is low. Summary of the Utility Model
[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, the utility model provides a jig for flattening a core, which can limit the rolling and offset of the core to ensure the use safety of the battery.
[0004] The jig for flattening a core according to an embodiment of the utility model includes:
[0005] A base body assembly, which is provided with a bearing groove for bearing the core body and a limiting groove for accommodating the positive tab or the negative tab, and the limiting groove penetrates through the side wall of the bearing groove;
[0006] A cover body assembly, which is movably arranged on the base body assembly so that the cover body assembly can be switched between an open state for opening the limiting groove and a closed state for closing the limiting groove. The cover body assembly is provided with an avoidance hole for avoiding the core body. When the cover body assembly is in the closed state, the avoidance hole is arranged opposite to the bearing groove, and the cover body assembly abuts against the periphery of the notch of the limiting groove.
[0007] The jig for flattening a core according to an embodiment of the utility model has at least the following
[0008] Advantages:
[0009] When the rolled core is flattened, the cover assembly is in an open state. Place the rolled core body in the bearing groove and install the tab in the limiting groove. Then, switch the cover assembly from the open state to the closed state so that the cover assembly abuts against the periphery of the notch of the limiting groove. The largest surface of the positive tab or the negative tab can abut against the cover assembly or the bottom wall of the limiting groove, which can limit the rolling of the rolled core body in the bearing groove. Then, the output end of the flattening device flattens the rolled core body through the avoidance hole, which can ensure that the plane with the largest surface area of the tab is parallel to the plane of the flattened rolled core body, so as to avoid the situation that the positive tab or the negative tab is folded and damaged during the encapsulation of the rolled core, and improve the safety of battery use.
[0010] According to some embodiments of the present invention, a plurality of the limiting grooves are provided, and along the width direction of the seat body assembly, the plurality of limiting grooves are arranged side by side at intervals.
[0011] According to some embodiments of the present invention, a plurality of the bearing grooves are provided, and along the length direction of the seat body assembly, the plurality of bearing grooves are arranged side by side at intervals, and a plurality of the avoidance holes are correspondingly provided.
[0012] According to some embodiments of the present invention, the seat body assembly includes a seat body main body and a limiting member provided on the seat body main body. A plurality of the limiting members are provided, the limiting grooves are provided on the limiting members, and along the length direction of the seat body main body, the plurality of limiting members are arranged side by side at intervals. The limiting grooves penetrate through the limiting members, and a bearing groove is formed between two adjacent limiting members.
[0013] According to some embodiments of the present invention, a connection structure is provided between the limiting member and the seat body main body, and the limiting member is detachably connected to the seat body main body through the connection structure.
[0014] According to some embodiments of the present invention, the connection structure includes a fastener, and the fastener penetrates through the limiting member and is threadedly connected to the seat body main body.
[0015] According to some embodiments of the present invention, the cover assembly includes a connecting member and a plurality of pressing members. The plurality of pressing members are arranged side by side at intervals along the length direction of the seat body assembly. The pressing members correspond to the limiting members one by one. One end of the pressing member is connected to the connecting member, and the other end of the pressing member is hinged to the limiting member. An avoidance hole is formed between two adjacent pressing members.
[0016] According to some embodiments of the present invention, one side of the cover assembly is hinged to the seat body assembly, and a limiting structure is provided between the other side of the cover assembly and the seat body assembly. The limiting structure is used to limit the cover assembly to be switched from the closed state to the open state.
[0017] According to some embodiments of the present utility model, the limiting structure includes a magnet provided on the cover assembly, and the magnet can magnetically attract the seat assembly.
[0018] According to some embodiments of the present utility model, it further includes a gasket, and the gasket is detachably accommodated in the bearing groove.
[0019] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. Description of the Drawings
[0020] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:
[0021] Figure 1 It is a schematic structural diagram of a jig for flattening a core in an embodiment of the present utility model, in which the cover assembly is in an open state;
[0022] Figure 2 It is an exploded schematic diagram of a jig for flattening a core in an embodiment of the present utility model;
[0023] Figure 3 It is a schematic structural diagram of a jig for flattening a core in an embodiment of the present utility model, in which the gasket is hidden;
[0024] Figure 4 It is a schematic structural diagram of a jig for flattening a core in an embodiment of the present utility model, in which the cover assembly is in a closed state and the core body is not flattened;
[0025] Figure 5 It is a schematic structural diagram of a jig for flattening a core in an embodiment of the present utility model, in which the cover assembly is in an open state and the core body is not flattened;
[0026] Figure 6 It is a schematic structural diagram of a jig for flattening a core in an embodiment of the present utility model, in which the cover assembly is in a closed state and the core body has been flattened;
[0027] Figure 7 It is a schematic structural diagram of the cover assembly in an embodiment of the present utility model;
[0028] Figure 8 It is a schematic structural diagram of the limiting member in an embodiment of the present utility model;
[0029] Figure 9 It is a schematic structural diagram of the core in an embodiment of the present utility model, in which the core body is not flattened;
[0030] Figure 10This is a schematic structural diagram of the core of the present utility model embodiment. In the figure, the core body has been flattened.
[0031] Reference numerals:
[0032] Base body assembly 100, bearing groove 101, limiting groove 102, base body 110, threaded hole 111, limiting member 120, hinge hole 121, through hole 122, cover body assembly 200, pressing member 210, hinge portion 211, connecting member 220, gasket 300, core 400, core body 410, positive electrode tab 430, negative electrode tab 430. Detailed implementation manners
[0033] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, where 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 drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.
[0034] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.
[0035] In the description of the present utility model, the meaning of "several" is one or more, the meaning of "multiple" is two or more, and understandings such as greater than, less than, exceeding, etc. do not include the present number, and understandings such as above, below, within, etc. include the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.
[0036] In the description of the present utility model, unless otherwise clearly defined, terms such as setting, installation, connection, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.
[0037] In the related art, a core generally includes a core body, a positive tab, and a negative tab. The positive tab and the negative tab are respectively disposed at two ends of the core body. The existing core body is cylindrical before being flattened. When the core body is flattened, the core body is placed in a carrying groove of a jig. Since the core body is prone to rolling and shifting, the core body cannot be stably installed in the carrying groove. After the core body is flattened, the plane with the largest surface area of the positive tab or the plane with the largest surface area of the negative tab is not parallel to the plane of the core body. After the core is encapsulated, the positive tab or the negative tab is folded, the tab glue is damaged, the internal structure of the battery is damaged, and the use safety of the battery is low.
[0038] Based on this, with reference to Figures 1 to 10 , this embodiment provides a jig for flattening a core, which includes a base body assembly 100 and a cover body assembly 200. The base body assembly 100 is provided with a carrying groove 101 for carrying the core body 410 and a limiting groove 102 for accommodating the positive tab 420 or the negative tab 430. The limiting groove 102 penetrates through the side wall of the carrying groove 101. The cover body assembly 200 is movably disposed on the base body assembly 100 so that the cover body assembly 200 can be switched between an open state for opening the limiting groove 102 and a closed state for closing the limiting groove 102. The cover body assembly 200 is provided with an avoidance hole for avoiding the core body 410. When the cover body assembly 200 is in the closed state, the avoidance hole is disposed opposite to the carrying groove 101. The cover body assembly 200 abuts against the periphery of the notch of the limiting groove 102. By providing the limiting groove 102, the tab can abut against the side wall of the limiting groove 102 to limit the rolling of the core body 410 in the carrying groove 101, and it can ensure that the plane with the largest surface area of the tab is parallel to the plane of the flattened core body 410, so as to avoid the situation that the tab is folded and the tab glue is damaged when the core 400 is encapsulated, and the use safety of the battery can be improved.
[0039] Specifically, when flattening the core 400, the cover body assembly 200 is in the open state. The core body 410 is placed in the carrying groove 101, and the tab is installed in the limiting groove 102. Then, the cover body assembly 200 is switched from the open state to the closed state so that the cover body assembly 200 abuts against the periphery of the notch of the limiting groove 102. The largest surface of the surface area of the positive tab 420 or the negative tab 430 can abut against the cover body assembly 200 or the bottom wall of the limiting groove 102, which can limit the rolling of the core body 410 in the carrying groove 101. Then, the output end of the flattening device flattens the core body 410 through the avoidance hole, which can ensure that the plane with the largest surface area of the tab is parallel to the plane of the flattened core body 410, so as to avoid the situation that the positive tab 420 or the negative tab 430 is folded and the tab glue is damaged when the core 400 is encapsulated, and the use safety of the battery can be improved.
[0040] It should be noted that the depth of the limiting groove 102 is less than that of the bearing groove 101. Since the position of the tab is higher than the bottom wall of the bearing groove 101, the bottom wall of the limiting groove 102 can abut against the surface with the largest surface area of the tab, thereby restricting the rolling of the core body 410 in the bearing groove 101, which will not be elaborated here.
[0041] It should be noted that the surface with the largest surface area of the positive tab 420 refers to the surface of the positive tab 420 in the thickness direction of the positive tab 420, and the surface with the largest surface area of the negative tab 430 refers to the surface of the negative tab 430 in the thickness direction of the negative tab 430, which will not be elaborated here.
[0042] Refer to Figure 1 、 Figure 8 In some embodiments of the present invention, a plurality of limiting grooves 102 are arranged. Along the width direction of the seat body assembly 100, the plurality of limiting grooves 102 are arranged side by side at intervals, and a plurality of cores 400 can be fixed simultaneously, so that the flattening device can flatten a plurality of cores 400 simultaneously, and the flattening efficiency of the flattening device can be improved.
[0043] Specifically, along the direction perpendicular to the recess direction of the bearing groove 101, the cross-section of the bearing groove 101 is in a rectangular structure. The plurality of cores 400 are arranged side by side at intervals along the length direction of the bearing groove 101, and the positive tab 420 or the negative tab 430 of each core 400 is accommodated in the corresponding limiting groove 102, so that a plurality of cores 400 can be fixed simultaneously, so that the flattening device can flatten a plurality of cores 400 simultaneously, and the flattening efficiency of the flattening device can be improved.
[0044] It should be noted that the length direction of the bearing groove 101 is the width direction of the seat body assembly 100, which will not be elaborated here.
[0045] Refer to Figure 3 In some embodiments of the present invention, a plurality of bearing grooves 101 are arranged. Along the length direction of the seat body assembly 100, the plurality of bearing grooves 101 are arranged side by side at intervals, and a plurality of avoidance holes are correspondingly arranged. A plurality of cores 400 can be fixed simultaneously, so that the flattening device can flatten a plurality of cores 400 simultaneously, and the flattening efficiency of the flattening device can be improved.
[0046] Specifically, taking the plurality of core bodies 410 installed in the same bearing groove 101 as a group, after a group of core bodies 410 are placed, a plurality of core bodies 410 are installed in another bearing groove 101, and this is repeated multiple times, the number of cores 400 on the fixture can be increased, a plurality of cores 400 can be fixed simultaneously, so that the flattening device can flatten a plurality of cores 400 simultaneously, and the flattening efficiency of the flattening device can be improved.
[0047] Refer to Figure 3, in some embodiments of the present utility model, the seat body assembly 100 includes a seat body main body 110 and a limiting member 120 provided on the seat body main body 110. A plurality of limiting members 120 are configured, and the plurality of limiting members 120 are arranged side by side at intervals along the length direction of the seat body main body 110. A bearing groove 101 is formed between adjacent limiting members 120. A limiting groove 102 is provided on the limiting member 120. The positive electrode tab 420 and the negative electrode tab 430 of the core 400 can be accommodated in the corresponding limiting groove 102, which can effectively limit the rolling of the core main body 410 in the bearing groove 101 to ensure that the surface with the largest surface area of the positive electrode tab 420 and the negative electrode tab 430 is parallel to the flattened plane of the core main body 410.
[0048] Specifically, along the length direction of the seat body assembly 100, the limiting groove 102 penetrates through the limiting member 120. One of the two adjacent bearing grooves 101 communicates with one side of the limiting groove 102, and the other communicates with the other side of the limiting groove 102, so that the positive electrode tab 420 and the negative electrode tab 430 of the core 400 can be accommodated in the corresponding limiting groove 102, which can effectively limit the rolling of the core main body 410 in the bearing groove 101 to ensure that the surface with the largest surface area of the positive electrode tab 420 and the negative electrode tab 430 is parallel to the flattened plane of the core main body 410.
[0049] Refer to Figure 3 , Figure 8 , in some embodiments of the present utility model, a connection structure is provided between the limiting member 120 and the seat body main body 110. The limiting member 120 is detachably connected to the seat body main body 110 through the connection structure, which is convenient for the production and manufacture of the seat body assembly 100.
[0050] In some embodiments of the present utility model, the connection structure includes a fastener. The fastener passes through the limiting member 120 and is threadedly connected to the seat body main body 110, which is convenient for the production and manufacture of the seat body assembly 100.
[0051] Specifically, the fastener is a component such as a bolt or a screw. The limiting member 120 is provided with a through hole 122, and the seat body main body 110 is provided with a threaded hole 111. The fastener passes through the through hole 122 and is in threaded cooperation with the threaded hole 111, which is convenient for the production and manufacture of the seat body assembly 100.
[0052] It should be noted that the connection structure can also be a structure in which a buckle is matched with a card slot. The buckle is provided on the seat body main body 110, and the card slot is provided on the limiting member 120. The buckle is accommodated in the card slot and can abut against the side wall of the card slot, which is convenient for assembling the limiting member 120 and will not be elaborated here.
[0053] Of course, in some other specific embodiments, the limiting member 120 can also be fixedly connected to the seat body main body 110 by welding. Among them, the welding methods include but are not limited to resistance welding or laser welding, etc., which will not be elaborated here.
[0054] Refer to Figure 7 、 Figure 8 In some embodiments of the present utility model, one side of the cover assembly 200 is hinged to the base assembly 100, and a limiting structure is provided between the other side of the cover assembly 200 and the base assembly 100. The limiting structure is used to limit the cover assembly 200 to switch from the closed state to the open state, so that the cover assembly 200 can stably be in the closed state, and it can ensure that the cover assembly 200 abuts against the periphery of the notch of the limiting groove 102.
[0055] In some embodiments of the present utility model, the limiting structure includes a magnet provided on the cover assembly 200. The magnet can magnetically attract the base assembly 100, so that the cover assembly 200 can stably be in the closed state, and it can ensure that the cover assembly 200 abuts against the periphery of the notch of the limiting groove 102.
[0056] Specifically, when the cover assembly 200 is in the closed state, the magnet can magnetically attract the base assembly 100 to limit the separation between the cover assembly 200 and the base assembly 100, so that the cover assembly 200 can stably be in the closed state, and it can ensure that the cover assembly 200 abuts against the periphery of the notch of the limiting groove 102.
[0057] It can be understood that the operator can apply a force that can overcome the magnetic force generated by the magnet to the cover assembly 200, so that the cover assembly 200 can switch from the closed state to the open state, which is convenient for taking out the flattened core 400.
[0058] Refer to Figure 7 In some embodiments of the present utility model, the cover assembly 200 includes a connecting member 220 and a plurality of pressing members 210. The plurality of pressing members 210 are arranged side by side and spaced apart along the length direction of the base assembly 100. The pressing members 210 correspond to the limiting members 120 one by one. One end of the pressing member 210 is connected to the connecting member 220, and the other end of the pressing member 210 is hinged to the limiting member 120. An avoidance hole is formed between two adjacent pressing members 210 to ensure that the pressing member 210 can abut against the periphery of the notches of the plurality of limiting grooves 102 on the corresponding limiting member 120.
[0059] Specifically, each pressing member 210 is hinged to the corresponding limiting member 120. An articulation portion 211 is provided at one end of the pressing member 210 away from the connecting member 220. The limiting member 120 is provided with an articulation hole 121. The articulation portion 211 is rotatably received in the corresponding articulation hole 121. When the cover assembly 200 is in the closed state, the articulation portion 211 abuts against the side wall of the articulation hole 121. Under the action of the magnet, the connecting member 220 abuts against the seat body 110, so that the pressing member 210 abuts against the limiting member 120, ensuring that the pressing member 210 can abut against the periphery of the openings of the plurality of limiting grooves 102 on the corresponding limiting member 120.
[0060] Referring to Figure 1 , Figure 2 , in some embodiments of the present invention, a gasket 300 is further included. The gasket 300 is detachably received in the receiving groove 101 and can be adapted to cores 400 of different diameters, thereby improving the versatility of the jig for flattening the core.
[0061] Specifically, since the depths of the limiting groove 102 and the receiving groove 101 are constant, the distance between the bottom wall of the limiting groove 102 and the bottom wall of the receiving groove 101 is constant. When the diameter of the core 400 is relatively small, the gasket 300 is used to raise the core 400 so that the positive ear 420 or the negative ear 430 can be received in the limiting groove 102. When the diameter of the core 400 is relatively large, the gasket 300 is removed so that the positive ear 420 or the negative ear 430 can be received in the limiting groove 102. It can be adapted to cores 400 of different diameters, thereby improving the versatility of the jig for flattening the core.
[0062] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.
[0063] The above has described this embodiment in detail with reference to the drawings, but the present invention is not limited to the above embodiment. Within the scope of knowledge possessed by those of ordinary skill in the art in the technical field, various changes can be made without departing from the purpose of the present invention.
Claims
1. A fixture for flattening a core, characterized in that Comprising: A base body assembly (100) provided with a carrying groove (101) for carrying a core body (410) and a limiting groove (102) for accommodating a positive tab (420) or a negative tab (430), the limiting groove (102) penetrating through the side wall of the carrying groove (101); A cover body assembly (200) movably arranged on the base body assembly (100) so that the cover body assembly (200) can be switched between an open state of opening the limiting groove (102) and a closed state of closing the limiting groove (102). The cover body assembly (200) is provided with an avoidance hole for avoiding the core body (410). When the cover body assembly (200) is in the closed state, the avoidance hole is arranged opposite to the carrying groove (101), and the cover body assembly (200) abuts against the periphery of the notch of the limiting groove (102).
2. The jig for flattening a core according to claim 1, characterized in that, A plurality of the limiting grooves (102) are arranged side by side at intervals along the width direction of the base body assembly (100).
3. The jig for flattening a core according to claim 1, characterized in that A plurality of the carrying grooves (101) are arranged side by side at intervals along the length direction of the base body assembly (100), and a plurality of corresponding avoidance holes are provided.
4. The jig for flattening a core according to claim 1, wherein, The base body assembly (100) includes a base body (110) and a plurality of limiting members (120) arranged on the base body (110). The limiting grooves (102) are arranged on the limiting members (120). A plurality of the limiting members (120) are arranged side by side at intervals along the length direction of the base body (110). The limiting grooves (102) penetrate through the limiting members (120), and the carrying grooves (101) are formed between adjacent two of the limiting members (120).
5. The jig for flattening a core according to claim 4, characterized in that, A connection structure is provided between the limiting member (120) and the base body (110), and the limiting member (120) is detachably connected to the base body (110) through the connection structure.
6. The jig for flattening the core according to claim 5, characterized in that The connection structure includes a fastener which penetrates through the limiting member (120) and is threadedly connected to the base body (110).
7. The jig for flattening a core according to claim 4, characterized in that, The cover body assembly (200) includes a connecting member (220) and a plurality of pressing members (210). The plurality of pressing members (210) are arranged side by side at intervals along the length direction of the base body assembly (100). The pressing members (210) correspond to the limiting members (120) one by one. One end of the pressing member (210) is connected to the connecting member (220), and the other end of the pressing member (210) is hinged to the limiting member (120). The avoidance holes are formed between adjacent two of the pressing members (210).
8. The jig for flattening a core according to claim 1, characterized in that, One side of the cover body assembly (200) is hinged to the base body assembly (100), and a limiting structure is provided between the other side of the cover body assembly (200) and the base body assembly (100) for restricting the cover body assembly (200) from being switched from the closed state to the open state.
9. The jig for flattening a core according to claim 8, wherein, The limiting structure includes a magnet provided on the cover assembly (200), and the magnet can magnetically attract the base assembly (100).
10. The jig for flattening a core according to claim 1, characterized in that, It further includes a gasket (300), and the gasket (300) is detachably accommodated in the bearing groove (101).