Fixing device for battery
By designing a fixture for batteries, using positioning parts and driving devices to clamp the battery ears, the problem of breakage caused by the offset of the ear during welding is solved, the manufacturing pass rate is improved, and real-time detection of defective products is achieved .
Patent Information
- Application Number
- CN202421073504.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-15
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-15
AI Technical Summary
During the welding process of battery electrode ears, the electrode ears are prone to break due to welding offset, resulting in a risk of short circuit and affecting the manufacturing pass rate.
A fixing device is designed, including a base, a pole mounting base, a press plate and a drive device, which clamps the pole ears by the mating of the first and second positioning members to prevent them from being offset during welding or cutting, and can be passed through Adjustable design to suit different models of batteries.
It effectively reduces the probability of extreme ear fracture, improves the pass rate during the manufacturing process, and realizes real-time detection and removal of defective products through short-circuit test probes.
Smart Images
Figure CN222244478U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of batteries, in particular to a fixing device for batteries. Background Art
[0002] In the related art, after multiple electrode sheets of a battery are stacked or wound into shape, multiple pole ears need to be welded and connected. During welding, the welding head usually welds from top to bottom, which can easily cause the pole ears to shift, and then pull the pole ears to cause breakage, which in turn will cause risks such as short circuits, affecting the battery's pass rate. There is room for improvement. Utility Model Content
[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a fixing device for a battery, which can fix the tab, reduce the probability of the tab being pulled and broken, and improve the qualified rate in the manufacturing process.
[0004] According to an embodiment of the utility model, a fixing device for a battery includes: a base; a pole piece mounting seat, which is arranged on the base and is used to place the pole piece, and the pole piece mounting seat is provided with a first positioning member; a pressure plate, which is arranged on the base, and the pressure plate has a second positioning member; a driving device, which is arranged on the base and connected to one of the pole piece mounting seat or the pressure plate, and is used to drive one of the pole piece mounting seat or the pressure plate to move, so that the positions of the first positioning member and the second positioning member correspond to each other to clamp the pole ear of the pole piece.
[0005] According to the fixing device for a battery in the embodiment of the utility model, by providing a pole piece mounting seat with a first positioning member and a pressure plate with a second positioning member, the pole ear can be fixed by the first positioning member and the second positioning member cooperating to clamp the pole ear, thereby preventing the pole ear from being dragged during welding or cutting, reducing the probability of the pole ear being pulled and broken, and improving the qualified rate in the manufacturing process.
[0006] In some embodiments, one of the first positioning member and the second positioning member defines a receiving groove suitable for receiving the pole lug, and the other can be inserted into the receiving groove under the movement of one of the pole piece mounting seat or the pressure plate to clamp the pole lug. In the above technical solution, the second positioning member or the first positioning member can be inserted into the receiving groove to achieve clamping of the pole lug, and the receiving groove can have a better positioning effect on the pole lug, further reducing the probability of the pole lug being dragged.
[0007] In some embodiments, the pole piece mounting seat includes a placement platform, and the first positioning member is detachably connected to the placement platform. In the above technical solution, it is convenient to place the pole lug in the receiving groove, and the first positioning member can play a good role in limiting and positioning the pole lug; and the first positioning member is set to be adjustable, which is convenient for adjusting the position of the first positioning member to correspond to the position of the pole lug of batteries of different models, and to achieve the clamping of the pole lug so that the fixing device can adapt to the fixation of batteries of various models, thereby reducing the cost of replacement.
[0008] In some embodiments, the second positioning member is detachably connected to the pressure plate. In the above technical solution, it is convenient to adjust the position of the second positioning member so as to correspond to the position of the tabs of batteries of different models and clamp the tabs, that is, the second positioning member is adjustable, so that the fixing device can adapt to the fixing of batteries of various models, thereby reducing the cost of changing models.
[0009] In some embodiments, the pole piece mounting seat further includes a first limiter, the first limiter is disposed on the placement platform and arranged opposite to the first positioning member, the first limiter is movable relative to the first positioning member, and can cooperate with the first positioning member to clamp the two sides of the pole piece. In the above technical solution, when the first limiter moves in a direction close to the first positioning member, if the pole ear is not installed in place, the first positioning member can push the pole piece to move so that the pole ear and the first positioning member are in place, thereby facilitating subsequent welding and cutting, etc., and reducing welding failure caused by pole ear displacement.
[0010] In some embodiments, the pole piece mounting seat further includes a second limiting member and a third limiting member arranged opposite to each other, and at least one of the second limiting member and the third limiting member can move in a direction close to the other to cooperate in clamping the other two sides of the pole piece. In the above technical solution, the pole piece can be further limited, reducing the probability of the pole piece shaking during welding or transportation.
[0011] In some embodiments, the driving device includes a first driving component and a second driving component, the first driving component is arranged on the base, the second driving component is connected to the first driving component, the pole piece mounting seat or the pressure plate is connected to the second driving component, the first driving component is used to drive the second driving component to move along a first direction, and the second driving component is used to drive the pole piece mounting seat or the pressure plate to move along a second direction, and the first direction and the second direction are perpendicular. In the above technical solution, the pole piece mounting seat or the pressure plate can be driven to move in two directions, so that the first positioning member and the second positioning member can be reliably matched, so that the pole ear can be clamped.
[0012] In some embodiments, the first driving component includes a driving motor, a screw and a slider. The driving motor is disposed on the base and connected to the screw. The slider is slidably disposed on the base and cooperates with the screw thread. The second driving component is connected to the slider to slide along the axial direction of the screw under the drive of the driving motor.
[0013] In some embodiments, the drive motor, the screw rod and the slider include two groups located on both sides of the second drive assembly, the sliders in the two groups are connected by a connecting seat, and the second drive assembly is arranged on the connecting seat. In the above technical solution, under the action of the two drive motors, the second drive assembly can be driven to move along the first direction, reducing the probability of the second drive assembly rotating or shaking, thereby improving the reliability of the pole piece ear clamping.
[0014] In some embodiments, the second drive assembly is a cylinder.
[0015] In some embodiments, two short-circuit test probes connected to a short-circuit tester are further included, and the second positioning member includes two spaced apart short-circuit test probes, the two short-circuit test probes are disposed on the two second positioning members, and at least a portion of each short-circuit test probe protrudes from a side of the second positioning member close to the first positioning member. In the above technical solution, when the tab is clamped between the first positioning member and the second positioning member, the short-circuit test probe is externally connected to the short-circuit tester to detect the short circuit of the battery. Specifically, a short-circuit test can be performed before the tab is welded to determine whether the incoming material is normal in turn. A short-circuit test can also be performed after the tab is welded to detect whether the welding is normal in turn. If defective products are found, they can be removed in time to further prevent the defective products from flowing into the next process.
[0016] In some embodiments, the base includes a transfer platform and a bracket, the pole piece mounting seat is arranged on the transfer platform, the bracket is arranged on the transfer platform and is located at the periphery of the pole piece mounting seat, and the driving device is arranged on the bracket and connected to the pressing plate. In the above technical solution, the pressing plate can be arranged above the pole piece mounting seat, and the driving device can drive the pressing plate to move, thereby clamping the pole ear; by moving the transfer platform, the entire fixing device can be driven to move to the welding station and cutting station, etc.
[0017] In some embodiments, the transfer platform includes a platform body and a protrusion, the bracket is arranged on the platform body, and the protrusion is arranged on a side of the platform body away from the bracket and has a fork hole. In the above technical solution, the entire fixing device can be moved by plugging a mechanical arm or other transport structure into the fork hole.
[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0020] Figure 1 is a schematic diagram of a fixing device according to an embodiment of the utility model at a viewing angle;
[0021] Figure 2 It is a schematic diagram of the fixing device according to an embodiment of the utility model at another viewing angle.
[0022] Reference numerals:
[0023] The fixing device 100,
[0024] Base 10, transfer platform 11, platform body 111, protrusion 112, fork hole 113, bracket 12, slide rail 13,
[0025] Pole piece mounting seat 20, first positioning member 21, receiving groove 211, placing platform 22, first limiting member 23, second limiting member 24, third limiting member 25, limiting cylinder 26,
[0026] Pressing plate 30, second positioning member 31,
[0027] The driving device 40 , the first driving component 41 , the driving motor 411 , the lead screw 412 , the slider 413 , the connecting seat 414 , the second driving component 42 , and the short-circuit test probe 50 . DETAILED DESCRIPTION
[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0029] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.
[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0031] Reference below Figure 1-Figure 2 A fixing device 100 for a battery according to an embodiment of the present invention is described.
[0032] like Figure 1-Figure 2 As shown, according to an embodiment of the present utility model, a fixing device 100 comprises: a base 10, a pole piece mounting seat 20, a pressing plate 30 and a driving device 40, wherein the pole piece mounting seat 20 is arranged on the base 10, the pole piece mounting seat 20 is used to place the pole piece, and a first positioning member 21 is arranged on the pole piece mounting seat 20; the pressing plate 30 is arranged on the base 10, as shown in FIG. Figure 1 As shown, the pressing plate 30 is located above the pole piece mounting seat 20 , and the pressing plate 30 has a second positioning member 31 .
[0033] The driving device 40 is arranged on the base 10, and the driving device 40 is connected to one of the pole piece mounting seat 20 or the pressure plate 30, and is used to drive one of the pole piece mounting seat 20 or the pressure plate 30 to move, so that the first positioning member 21 and the second positioning member 31 are positioned correspondingly to clamp the pole ear of the pole piece, for example, first move the pole piece mounting seat 20 or drive the pressure plate 30 to move horizontally, so that the pole piece mounting seat 20 and the driving pressure plate 30 are positioned oppositely, and then drive the pressure plate 30 to move downward or drive the pole piece mounting seat 20 to move upward to achieve the clamping of the pole ear, such as Figure 1As shown, the pole piece mounting seat 20 can be fixed, and the driving device 40 can drive the pressure plate 30 to move so that it corresponds to the position of the pole piece mounting seat 20. Of course, the pressure plate 30 can also be fixed, and the driving device 40 can drive the pole piece mounting seat 20 to move so that it corresponds to the position of the pressure plate 30.
[0034] In addition, after the pressing plate 30 moves down or the pole piece mounting seat 20 moves up, when the pole ears are clamped, multiple pole pieces can be clamped by the pressing plate 30 and the pole piece mounting seat 20 at the same time, reducing the probability of displacement of the pole pieces.
[0035] According to the fixing device 100 of the embodiment of the utility model, by providing a pole piece mounting seat 20 with a first positioning member 21 and a pressure plate 30 with a second positioning member 31, the pole ear can be fixed by the first positioning member 21 and the second positioning member 31 cooperating to clamp the pole ear, thereby preventing the pole ear from being dragged during welding or cutting, reducing the probability of the pole ear being pulled and broken, and improving the qualified rate in the manufacturing process.
[0036] In some embodiments, one of the first positioning member 21 and the second positioning member 31 defines a receiving groove 211 suitable for receiving the pole lug, and the other can be inserted into the receiving groove 211 when one of the pole piece mounting seat 20 or the pressure plate 30 is movable to clamp the pole lug.
[0037] like Figure 1 As shown, in some embodiments, the first positioning member 21 is defined with a receiving groove 211 suitable for accommodating the pole ear, and the receiving groove 211 is open on the side facing the pressure plate 30, and the driving device 40 drives one of the pole piece mounting seat 20 or the pressure plate 30 to move, so as to make the second positioning member 31 and the receiving groove 211 plug and match. That is, under the action of the driving device 40, the second positioning member 31 can move to the receiving groove 211 of the first positioning member 21, and by driving the first positioning member 21 or the second positioning member 31 to move, the two are brought close to each other, so that the second positioning member 31 can be plugged into the receiving groove 211 to achieve clamping of the pole ear. The receiving groove 211 can have a better positioning effect on the pole ear, further reducing the probability of the pole ear being dragged.
[0038] In other embodiments, the first positioning member 21 may also be a block-shaped structure, and the second positioning member 31 is defined with a receiving groove 211 open toward one side of the first positioning member 21 , and the first positioning member 21 may be inserted into the receiving groove 211 .
[0039] In some embodiments, the first positioning member 21 and the second positioning member 31 are both block structures, and the two clamp the tabs through plane cooperation.
[0040] like Figure 1As shown, in some embodiments, the pole piece mounting seat 20 includes a placement platform 22, and at least a portion of the first positioning member 21 protrudes from the placement platform 22. For example, the first positioning member 21 defines a receiving groove 211, and the bottom wall of the receiving groove 211 is flush with the upper surface of the placement platform 22, and the side wall of the receiving groove 211 is located above the placement platform 22, thereby facilitating the placement of the pole ear in the receiving groove 211. The first positioning member 21 can play a better role in limiting and positioning the pole ear.
[0041] like Figure 1 As shown, the side of the placement platform 22 has a plurality of mounting holes, the first positioning member 21 has a matching hole, and the first positioning member 21 and the placement platform 22 are connected by fasteners that penetrate the mounting holes and the matching holes to realize the assembly of the first positioning member 21 and the placement platform 22, and the first positioning member 21 and the placement platform 22 are detachably connected, thereby facilitating the adjustment of the position of the first positioning member 21 so as to correspond to the position of the pole ears of batteries of different types and realize the clamping of the pole ears. That is to say, the first positioning member 21 is set to be adjustable, so that the fixing device 100 can adapt to the fixation of batteries of various types, thereby reducing the cost of replacement.
[0042] like Figure 1 As shown, in some embodiments, the second positioning member 31 has a matching hole, and the second positioning member 31 and the pressure plate 30 are connected by fasteners that penetrate the mounting hole and the matching hole to realize the assembly of the second positioning member 31 and the pressure plate 30, and the second positioning member 31 and the pressure plate 30 are detachably connected, thereby facilitating the adjustment of the position of the second positioning member 31 so as to correspond to the position of the pole ears of batteries of different models and realize the clamping of the pole ears, that is, the second positioning member 31 is adjustable, so that the fixing device 100 can adapt to the fixation of various types of batteries and reduce the cost of replacement. Of course, for different batteries, the second positioning member 31 and the first positioning member 21 need to be adjusted synchronously so that the second positioning member 31 and the first positioning member 21 can clamp the corresponding pole ears.
[0043] In some embodiments, the fixing device 100 also includes two short-circuit test probes 50 connected to a short-circuit tester, and the second positioning member 31 includes two spaced-apart members, the two short-circuit test probes 50 are disposed on the two second positioning members 31, and at least a portion of each short-circuit test probe 50 protrudes out of the side of the second positioning member 31 close to the first positioning member 21. Therefore, when the tab is clamped between the first positioning member 21 and the second positioning member 31, the short-circuit tester is externally connected to the short-circuit test probe 50 to detect the short circuit of the battery. Specifically, a short-circuit test can be performed before the tab is welded to determine whether the incoming material is normal in turn. Alternatively, a short-circuit test can be performed after the tab is welded to detect whether the welding is normal in turn. If defective products are found, they can be removed in time to further prevent the defective products from flowing into the next process.
[0044] like Figure 1 and Figure 2 As shown, in some embodiments, the pole piece mounting seat 20 further includes a first limiting member 23, the first limiting member 23 is disposed on the placement platform 22, and the first limiting member 23 is arranged relative to the first positioning member 21, the first limiting member 23 is movable relative to the first positioning member 21, and the first limiting member 23 can cooperate with the first positioning member 21 to clamp both sides of the pole piece, which refers to both sides of a plurality of stacked pole pieces, such as Figure 2 As shown, the first limit member 23 is located above the placement platform 22, and the first limit member 23 is connected to the limit cylinder 26. The limit cylinder 26 can drive the first limit member 23 to move so as to achieve the clamping and positioning of the pole piece. At the same time, since the first limit member 23 is arranged relative to the first positioning member 21, when the first limit member 23 moves toward the direction close to the first positioning member 21, if the pole ear is not installed in place, the first positioning member 21 can push the pole piece to move, so that the pole ear and the first positioning member 21 are matched in place, which is convenient for subsequent welding and cutting, and reduces the welding failure caused by the pole ear offset.
[0045] like Figure 2 As shown, in some embodiments, the pole piece mounting seat 20 also includes a second limiting member 24 and a third limiting member 25 arranged relatively to each other, and at least one of the second limiting member 24 and the third limiting member 25 can move in a direction close to the other to cooperate with the other two sides of the clamped pole piece, which here refers to the other two sides of multiple stacked pole pieces, thereby further limiting the pole piece and reducing the probability of the pole piece shaking during welding or transportation.
[0046] like Figure 1 and Figure 2 As shown, the second limit member 24 is located on one side of the placement platform 22, and the second limit member 24 can be fixedly connected to the placement platform 22, or the second limit member 24 is directly fixedly connected to the base 10, and the third limit member 25 is connected to the limit cylinder 26, and the limit cylinder 26 can drive the third limit member 25 to move, so as to realize the clamping and positioning of the pole piece. That is to say, on the pole piece mounting seat 20, the second limit member 24 and the first positioning member 21 can be fixed on the placement platform 22, and the two can position the pole ear and the edge of one side of the pole piece of a certain model, and then through the movement of the first limit member 23 and the third limit member 25, the pole piece can be clamped, so that it can be stabilized on the pole piece mounting seat 20, reducing the probability of the pole piece shaking during welding or transportation.
[0047] In some specific examples, after multiple pole pieces are placed on the placement platform 22 and the pole ears are placed in the receiving grooves 211 on the first positioning block, the limiting cylinder 26 pushes the third limiting member 25 and the first limiting member 23 to move, thereby fixing the four sides of the pole pieces.
[0048] like Figure 1As shown, in some embodiments, the driving device 40 includes a first driving component 41 and a second driving component 42, the first driving component 41 is arranged on the base 10, the second driving component 42 is connected to the first driving component 41, the pole piece mounting seat 20 or the pressure plate 30 is connected to the second driving component 42, and the first driving component 41 is used to drive the second driving component 42 along a first direction (such as Figure 1 The second driving assembly 42 is used to drive the pole piece mounting seat 20 or the pressing plate 30 to move along the second direction (such as the left and right direction shown in FIG. Figure 1 The first direction and the second direction are perpendicular, thereby driving the pole piece mounting seat 20 or the pressure plate 30 to move in two directions, so that the first positioning member 21 and the second positioning member 31 can be reliably matched, thereby clamping the pole ear.
[0049] like Figure 1 and Figure 2 As shown, in some embodiments, the first drive component 41 includes a drive motor 411, a screw rod 412 and a slider 413. The drive motor 411 is disposed on the base 10 and connected to the screw rod 412. The slider 413 is slidably disposed on the base 10. The slider 413 is threadably matched with the screw rod 412. The second drive component 42 is connected to the slider 413 so as to slide along the axial direction of the screw rod 412 under the drive of the drive motor 411.
[0050] That is, the drive motor 411 provides power, the screw rod 412 can convert the rotational motion of the drive motor 411 into horizontal movement, and the second drive component 42 is connected to the screw rod 412 via the slider 413, so that the second drive component 42 can move along the first direction.
[0051] like Figure 2 As shown, in some embodiments, the driving motor 411, the screw rod 412 and the slider 413 include two groups, and the two groups of structures are located on both sides of the second driving component 42. The two sliders 413 in the two groups are connected by a connecting seat 414, and the second driving component 42 is arranged on the connecting seat 414. By setting two sliders 413 and two screw rods 412, the stability and reliability of the overall structure can be improved. The second driving component 42 is installed on the connecting seat 414 and is located between the two sliders 413, so that under the action of the two driving motors 411, the second driving component 42 can be driven to move along the first direction, reducing the probability of the second driving component 42 rotating or shaking, thereby improving the reliability of the pole ear clamping of the pole piece.
[0052] like Figure 1 As shown, in some embodiments, the second driving assembly 42 is a cylinder, and the cylinder is connected to the pressing plate 30. By controlling the extension and retraction of the cylinder, the pressing plate 30 is controlled to move along the second direction.
[0053] like Figure 1 As shown, in some embodiments, the base 10 includes a transfer platform 11 and a bracket 12, the pole piece mounting seat 20 is arranged on the transfer platform 11, the bracket 12 is arranged on the transfer platform 11, and the bracket 12 is located at the periphery of the pole piece mounting seat 20 to avoid interference between the bracket 12 and the placement of the pole piece, and the driving device 40 is arranged on the bracket 12, and the driving device 40 is connected to the pressing plate 30, so that the pressing plate 30 can be arranged above the pole piece mounting seat 20, and the driving device 40 can drive the pressing plate 30 to move, thereby clamping the pole ear. In addition, by moving the transfer platform 11, the entire fixing device 100 can be driven to move to the welding station and the cutting station, etc.
[0054] like Figure 1 As shown, in some embodiments, the transfer platform 11 includes a platform body 111 and a protrusion 112, the bracket 12 is arranged on the platform body 111, the pole piece mounting seat 20 is arranged on the platform body 111, and the protrusion 112 is arranged on the side of the platform body 111 away from the bracket 12, and the protrusion 112 has a fork hole 113, so that the entire fixing device 100 can be moved by plugging it into the fork hole 113 through a robotic arm or other transportation structure.
[0055] like Figure 1 and Figure 2 As shown, in some specific embodiments, the fixture 100 includes a base 10 , a pole piece mounting seat 20 , a pressing plate 30 , a short-circuit test probe 50 and a driving device 40 .
[0056] The base 10 includes a transfer platform 11 and a bracket 12. The transfer platform 11 includes a platform body 111 and a protrusion 112. The protrusion 112 is arranged on the lower side of the platform body 111 and forms a square column with rounded corners. The size of the protrusion 112 in the horizontal direction is smaller than that of the platform body 111. The protrusion 112 has a fork hole 113 that passes through the length direction of the protrusion 112.
[0057] The pole piece mounting seat 20 is arranged on the platform body 111 and includes a placement platform 22, a first positioning member 21, a first limiting member 23, a second limiting member 24, a third limiting member 25 and two limiting cylinders 26. The side of the placement platform 22 has a plurality of mounting holes. The first positioning member 21 has a matching hole. The first positioning member 21 is connected to the placement platform 22 by fasteners that penetrate the mounting holes and the matching holes. The first positioning member 21 defines a receiving groove 211. The first limiting member 23 is arranged on the placement platform 22, and the first limiting member 23 is arranged opposite to the first positioning member 21. A limiting cylinder 26 can drive the first limiting member 23 to move. The second limiting member 24 and the third limiting member 25 are arranged opposite to each other. Another limiting cylinder 26 can drive the third limiting member 25 to move.
[0058] The pressing plate 30 has two second positioning members 31 . Each second positioning member 31 has a short circuit test probe 50 . At least a portion of each short circuit test probe 50 protrudes from the lower side of the second positioning member 31 .
[0059] The support 12 is disposed above the platform body 111 and includes four pillars and two slide rails 13 . Each slide rail 13 is connected between two pillars, and the two slide rails 13 are arranged at intervals in the horizontal direction.
[0060] The driving device 40 includes a first driving component 41 and a second driving component 42. The first driving component 41 includes two driving motors 411, two screw rods 412, two sliders 413 and a connecting seat 414. The driving motor 411 is arranged on the bracket 12 and connected to the screw rod 412. The slider 413 is threadedly matched with the screw rod 412, and the slider 413 is slidingly matched with the slide rail 13. The two sliders 413 are connected through the connecting seat 414. The second driving component 42 is a cylinder. The second driving component 42 is arranged on the connecting seat 414, and the pressure plate 30 is connected to the lower part of the second driving component 42.
[0061] The above-mentioned fixing device 100 is used to perform ultrasonic welding of the battery tab, and the specific fixing process is as follows:
[0062] First, multiple pole pieces of the battery are placed on the placement platform 22, and the pole ears are placed inside the accommodating groove 211 of the first positioning member 21; the limiting cylinder 26 drives the first limiting member 23 and the third limiting member 25 to move, and fixes the four sides of the multiple pole pieces to prevent the battery cells from shifting; the driving motor 411 is turned on, and the driving motor 411 drives the screw rod 412 to rotate, driving the second driving component 42 and the pressure plate 30 to move horizontally to above the pole piece, and the second driving component 42 is turned on to move the pressure plate 30 downward to press the large surface of the pole piece to prevent the pole piece from shifting and loosening; the second positioning member 31 will move downward with the pressure plate 30, and cooperate with the first positioning member 21 to fix the pole ear, so as to achieve the gathering and fixation of the pole ear.
[0063] At this time, the short-circuit test probe 50 can be connected to an external short-circuit tester to detect the battery cell and determine the short-circuit situation of the battery; wherein, after the battery cell short-circuit test detected before welding is passed, the transfer platform 11 can move the fixing device 100 to the welding position to weld the pole ear. After the welding is completed, each component is reset to the initial position and then unloading is carried out; it can also be moved to the cutting position to cut off the excess part of the pole ear. After the cutting is completed, a short-circuit test can also be carried out to detect the welding effect of the pole ear.
[0064] When the detected battery cell short circuit test fails, the driving device 40 drives the pressing plate 30 to return to the initial position, and the first limiting member 23 and the third limiting member 25 also return to the initial position to avoid interference with the subsequent placement of the electrode piece.
[0065] By adopting the above-mentioned fixing device 100, when the welding head is welding from top to bottom during the tab welding, or when the cutter is cutting from top to bottom during the cutting, the tab is fixed and is not easily driven to deviate, thereby avoiding the probability of the tab being pulled and broken, causing a short circuit, and improving the qualified rate of the battery. At the same time, it can also detect whether the incoming materials are normal, prevent defective products from flowing into the current process and defective products from flowing out of the next process, and realize real-time detection of the product qualified rate.
[0066] Other components and operations of the battery manufacturing according to the embodiment of the utility model are known to those skilled in the art and will not be described in detail here. Among them, the up-down direction, left-right direction and front-back direction are based on the up-down direction, left-right direction and front-back direction shown in the figure.
[0067] In the description of the present utility model, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature "above", "above" and "above" a second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.
[0068] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0069] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. A fixing device for a battery, characterized in that: include: Pedestal; A pole piece mounting seat, which is arranged on the base and used to place the pole piece, and a first positioning member is provided on the pole piece mounting seat; A pressing plate, the pressing plate is arranged on the base, and the pressing plate has a second positioning member; A driving device is arranged on the base and connected to one of the pole piece mounting seat or the pressure plate, and is used to drive one of the pole piece mounting seat or the pressure plate to move so that the positions of the first positioning member and the second positioning member correspond to each other to clamp the pole ear of the pole piece.
2. The fixing device for a battery according to claim 1, characterized in that: One of the first positioning member and the second positioning member is defined with a receiving groove suitable for receiving the pole lug, and the other can be inserted into the receiving groove when one of the pole piece mounting seat or the pressure plate is movable to clamp the pole lug.
3. The fixing device for a battery according to claim 2, characterized in that: The pole piece mounting seat comprises a placement platform, and the first positioning member is detachably connected to the placement platform; and / or the second positioning member is detachably connected to the pressure plate.
4. The fixing device for a battery according to claim 3, characterized in that: The pole piece mounting seat also includes a first limiting member, which is disposed on the placement platform and arranged opposite to the first positioning member. The first limiting member is movable relative to the first positioning member and can cooperate with the first positioning member to clamp both sides of the pole piece.
5. The fixing device for a battery according to claim 4, characterized in that: The pole piece mounting seat further comprises a second limiting member and a third limiting member which are arranged opposite to each other, and at least one of the second limiting member and the third limiting member can move in a direction close to the other one to cooperate in clamping the other two sides of the pole piece.
6. The fixing device for a battery according to claim 1, characterized in that: The driving device comprises a first driving assembly and a second driving assembly, wherein the first driving assembly is arranged on the base, the second driving assembly is connected to the first driving assembly, and the pole piece mounting seat or the pressing plate is connected to the second driving assembly. The first driving assembly is used to drive the second driving assembly to move along a first direction, and the second driving assembly is used to drive the pole piece mounting seat or the pressure plate to move along a second direction, and the first direction is perpendicular to the second direction.
7. The fixing device for a battery according to claim 6, characterized in that: The first driving component includes a driving motor, a screw and a slider. The driving motor is arranged on the base and connected to the screw. The slider is slidably arranged on the base and cooperates with the screw thread. The second driving component is connected to the slider to slide along the axial direction of the screw under the drive of the driving motor.
8. The fixing device for a battery according to claim 7, characterized in that: The driving motor, the lead screw and the slider include two groups located on both sides of the second driving component. The sliders in the two groups are connected through a connecting seat, and the second driving component is arranged on the connecting seat.
9. The fixing device for a battery according to claim 1, characterized in that: It also includes two short-circuit test probes connected to a short-circuit tester. The second positioning members include two spaced-apart members. The two short-circuit test probes are disposed on the two second positioning members, and at least a portion of each of the short-circuit test probes protrudes out of a side of the second positioning member close to the first positioning member.
10. The fixing device for a battery according to any one of claims 1 to 9, characterized in that: The base includes a transfer platform and a bracket, the pole piece mounting seat is arranged on the transfer platform, the bracket is arranged on the transfer platform and is located at the periphery of the pole piece mounting seat, and the driving device is arranged on the bracket and connected to the pressure plate.