Battery cell edge ironing equipment

Abstract

The utility model discloses battery cell edge ironing equipment. The battery cell edge ironing equipment comprises a placing piece, a hot ironing assembly and a detection module, the hot ironing assembly comprises a hot ironing piece, the hot ironing piece is used for processing the battery cell, and the detection module is used for detecting the distance between the hot ironing piece and the edge of the isolating membrane. In the edge ironing treatment process, the edge ironing effect can be influenced by too close or too far distance between a hot ironing piece and a battery cell, too close distance may cause too high surface temperature of the battery cell and too large shrinkage degree of an isolating membrane to cause short circuit, too far distance may cause too low surface temperature of the battery cell and unobvious shrinkage of the isolating membrane; in the prior art, the distance between a hot ironing piece and a battery cell is not detected, and the edge ironing effect is poor, the battery cell edge ironing equipment disclosed by the embodiment of the utility model is additionally provided with a detection module, and when the battery cell is placed on a placing piece, the distance between a hot ironing surface and the peripheral surface of the battery cell can be known through the detection module, so that the edge ironing effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery processing, in particular to a battery core edge curling device. Background Art

[0002] The laminated battery cell includes a positive electrode sheet, a negative electrode sheet, and a separator. The separator is arranged between the positive electrode sheet and the negative electrode sheet. In order to ensure the energy density and safety of the laminated battery cell, the length and width of the separator need to be larger than the length and width of the electrode sheet when designing the separator. In order to prevent the separator from extending too much after the battery cell is placed in the steel shell, which will affect the packaging of the steel shell, the separator needs to be ironed beforehand to shrink it. The specific process of ironing the separator is to use a heated hot ironing device to approach the separator so that it shrinks due to the heat. Since the distance between the hot ironing device and the separator cannot be determined, the ironing effect of the separator is poor. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a battery core edge curling device that can improve the edge curling effect.

[0004] The battery cell edge-ironing device according to an embodiment of the present invention is used to iron the separator of a battery cell and includes a placement member, a hot-ironing assembly, and a detection module. The placement member has a placement surface for placing the battery cell. The hot-ironing assembly includes a hot-ironing member for processing the battery cell, and the detection module is used to detect the distance between the hot-ironing member and the edge of the separator.

[0005] The battery cell edge curling device according to the embodiment of the present invention has at least the following beneficial effects: during the edge curling process, the edge curling effect will be affected if the hot curling piece is too close or too far away from the battery cell. If it is too close, the surface temperature of the battery cell may be too high and the isolation membrane may shrink too much, causing a short circuit. If it is too far away, the surface temperature of the battery cell may be too low and the isolation membrane may not shrink significantly. In the prior art, the distance between the hot curling piece and the battery cell is not detected, and the edge curling effect is not good. The battery cell edge curling device according to the embodiment of the present invention adds a detection module. When the battery cell is placed on the placement piece, the distance between the hot curling piece and the outer peripheral surface of the battery cell can be known through the detection module, thereby improving the edge curling effect.

[0006] According to some embodiments of the present invention, the detection module is configured as a charge coupled device camera detector, and the detection module is provided with a lens, which is arranged opposite to the placement surface and spaced apart, and is used to capture images of the battery cell and the hot stamping piece.

[0007] According to some embodiments of the present invention, the placement surface includes a first area and a second area, the first area surrounds an edge connected to the second area, and along the vertical direction, the projection of the lens falls on the projection of the second area.

[0008] According to some embodiments of the present invention, the hot stamping element includes a heat transfer block and a heating wire. The heat transfer block has a cavity, and the heating wire is arranged in the cavity.

[0009] According to some embodiments of the present invention, the battery cell edge curling device includes a controller, which is communicatively connected to the detection module, and the controller is communicatively connected to the hot ironing piece. The controller is used to compare the actual distance between the hot ironing piece and the edge of the isolation film detected by the detection module with a preset distance. The controller is also used to send a temperature increase or decrease signal to the hot ironing piece, and the hot ironing piece increases or decreases the temperature according to the temperature increase or decrease signal.

[0010] According to some embodiments of the present invention, the hot stamping piece has a bending portion, and the bending portion is used to process the corners of the battery core.

[0011] According to some embodiments of the present invention, the hot stamping component further includes a driving module, which includes a screw rod and a driving member, one end of the screw rod is connected to the hot stamping member, and the other end of the screw rod is connected to the driving member, and the driving member is used to drive the screw rod to rotate so that the hot stamping member approaches or moves away from the center of the placement surface.

[0012] According to some embodiments of the present invention, the placement surface includes a first and a second side facing each other, and a third side whose two ends are respectively connected to the first and the second side. There are three hot-ironing parts, and the three hot-ironing parts surround the placement surface. The hot-ironing parts have a hot-ironing surface, and the hot-ironing surface is used to process the isolation film. Along the first horizontal direction, the length of the hot-ironing surface of the hot-ironing part arranged opposite to the first side is greater than the length of the first side; along the first horizontal direction, the length of the hot-ironing surface of the hot-ironing part arranged opposite to the second side is greater than the length of the second side; along the second horizontal direction, the length of the hot-ironing surface of the hot-ironing part arranged opposite to the third side is greater than the length of the third side, and the first horizontal direction is perpendicular to the second horizontal direction.

[0013] According to some embodiments of the present invention, the hot stamping piece is provided with an arc-shaped groove, and the arc-shaped groove is used to wrap the edge of the battery core.

[0014] According to some embodiments of the present invention, the battery cell ironing device further includes an adsorption mechanism, which is used to adsorb the battery cell onto the placement surface.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0017] Figure 1 This is a front view of a battery core edge curling device in one embodiment of the present invention;

[0018] Figure 2 This is a first top view of a battery core edge curling device in one embodiment of the present invention;

[0019] Figure 3 This is a second top view of the battery cell edge curling device in one embodiment of the present invention.

[0020] Figure 1: Battery cell ironing device 100, placement piece 101, placement surface 102, ironing assembly 103, ironing piece 104, battery cell 105, detection module 106, lens 107, heat transfer block 108, heating wire 109, cavity 110, driving module 111, screw rod 112, driving piece 113, arc groove 114, isolation membrane 201, first area 202, second area 203, bending portion 204, corner 205, first side 206, second side 207, third side 208, first pole piece 209, pole ear 210, ironing surface 211, first ironing block 212, second ironing block 213, third ironing block 301. DETAILED DESCRIPTION

[0021] The following describes embodiments of the present invention in detail. 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 intended only to explain the present invention and are not to be construed as limiting the present invention.

[0022] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0023] In the description of this utility model, "several" means more than one, "plurality" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of the terms "first" and "second" is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0024] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0025] In the description of the present invention, reference to terms such as "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 present invention. In this specification, the exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0026] refer to Figure 1 and Figure 2 According to an embodiment of the present invention, a battery cell edge-cutting device 100 is used to cut the edges of the separator 201 of a battery cell 105 and includes a placement member 101, a hot-cutting assembly 103, and a detection module 106. The placement member 101 has a placement surface 102 for placing the battery cell 105. The hot-cutting assembly 103 includes a hot-cutting element 104 for cutting the battery cell 105. The detection module 106 is used to detect the distance between the hot-cutting element 104 and the edge of the separator 201. During the edge ironing process, if the hot ironing piece 104 is too close or too far away from the battery cell 105, the edge ironing effect will be affected. If it is too close, the surface temperature of the battery cell 105 may be too high, and the isolation film 201 may shrink too much, causing a short circuit. If it is too far away, the surface temperature of the battery cell 105 may be too low, and the isolation film 201 may not shrink significantly. In the prior art, the distance between the hot ironing piece 104 and the battery cell 105 is not detected, and the edge ironing effect is not good. The battery cell edge ironing device 100 of the embodiment of the present invention adds a detection module 106. When the battery cell 105 is placed on the placement piece 101, the detection module 106 can be used to know the distance between the hot ironing surface 211 and the outer peripheral surface of the battery cell 105, thereby improving the edge ironing effect.

[0027] It should be noted that the effect of the ironing edge is mainly reflected in the degree of shrinkage of the isolation membrane 201, and the degree of shrinkage of the isolation membrane 201 is related to multiple factors. In addition to the above-mentioned heating temperature and the distance between the hot ironing part 104 and the isolation membrane 201, the heating time and the distance of the isolation membrane 201 extending relative to the pole piece will affect the degree of shrinkage of the isolation membrane 201. Specifically, the longer the heating time, the greater the degree of shrinkage of the isolation membrane 201, and the shorter the time, the smaller the degree of shrinkage of the isolation membrane 201. The closer the distance between the hot ironing part 104 and the isolation membrane 201, the greater the degree of fit between them, and the greater the degree of shrinkage of the isolation membrane 201. The farther the distance, the smaller the degree of fit between them, and the smaller the degree of shrinkage of the isolation membrane 201. Specifically, the adjustment of these parameters is achieved by observing the state of the isolation membrane 201 during the processing. When the isolation membrane 201 reaches the ideal state, that is, the extension size relative to the pole piece after shrinkage is within the preset range, the processing is completed. In addition, the battery cell ironing device 100 of the embodiment of the present invention can not only iron the isolation membrane 201 to shrink it, but also make the edges of the isolation membrane 201 adhere to each other, so that the isolation membranes 201 of different layers are adhered to each other. The bonding force generated between them can, on the one hand, allow the isolation membranes 201 to have mutual binding force when the battery cell 105 is tested in the hot box, so that the isolation membrane 201 is not easy to shrink at high temperature, further improving the pass rate of the hot box test; on the other hand, the bending generated when the isolation membrane 201 shrinks and bonds further reduces the protruding length relative to the electrode, avoiding the situation in which the isolation membrane 201 protrudes relative to the shell after the battery cell 105 is placed in the shell during the battery manufacturing process, thereby improving the quality of the battery.

[0028] It should be noted that the battery cell edge curling device 100 of the embodiment of the present invention can not only be used to curl the isolation membrane 201 around the battery cell 105, but also can be used to heat and cure the glue after the battery cell 105 is encapsulated with glue. It can also be applied to other products that require plastic sealing or curling.

[0029] In some embodiments of the present invention, detection module 106 is configured as a charge-coupled device (CCD) camera detector. Detection module 106 is equipped with a lens 107, which is spaced apart from placement surface 102 and faces each other. Lens 107 is used to capture images of battery cells 105 and hot stamping element 104. Lens 107 is positioned facing each other with placement surface 102 to enable detection module 106 to capture as many images of battery cells 105 and hot stamping element 104 as possible. CCD camera detectors offer advantages such as high detection accuracy, high-speed detection efficiency, labor cost savings, wide detection coverage, improved product quality, and reduced error rates. Their non-contact measurement methods and corresponding software are simple, easy to use, and versatile. These advantages facilitate precise control of the distance between separator 201 and hot stamping surface 211, improving the quality of hot stamping edges. In some embodiments of the present invention, detection module 106 can also utilize a detector such as a CMOS (complementary metal oxide semiconductor) image sensor for detection.

[0030] refer to Figure 2 In some embodiments of the present invention, the placement surface 102 includes a first area 202 and a second area 203. The first area 202 surrounds the edge connected to the second area 203, and the projection of the lens 107 vertically falls on the projection of the second area 203. This design allows the lens 107 to detect the entire image of the battery cell 105 as comprehensively as possible. When the battery cell 105 is placed on the placement surface 102, for stability, the center of the battery cell 105 is generally aligned with the center of the placement surface 102 as much as possible. Therefore, when the lens 107 is positioned in the second area 203 in the middle, it can detect more images of the battery cell 105. It should be noted that in some embodiments of the present invention, the center of the placement surface 102 is located in the second area 203. After the battery cell 105 is placed on the placement surface 102, the center of the battery cell 105 is also located in the second area 203. This maximizes the detection range of the lens 107 and more comprehensively detects the distance between the hot stamping element 104 and the separator 201. In some embodiments of the present invention, the detection module 106 can be moved relative to the placement surface 102, so that the edges of the battery cell 105 and the hot stamping element 104 can be observed in a scanning manner to avoid visual blind spots.

[0031] refer to Figure 1 and Figure 2In some embodiments of the present invention, the hot stamping part 104 includes a heat transfer block 108 and a heating wire 109. The heat transfer block 108 has a cavity 110, and the heating wire 109 is arranged in the cavity 110. It should be noted that in some embodiments of the present invention, the heating wire 109 can be used directly to heat the battery cell 105, but the temperature of the heating wire 109 is often relatively high, and the temperature is also uneven. The temperature of the heating wire 109 close to the power end is often higher than the heating wire 109 far away from the power end. Therefore, in some embodiments of the present invention, the heating wire 109 is arranged in the cavity 110 of the heat transfer block 108, and the heat of the heating wire 109 is first transferred to the heat transfer block 108, and the heat transfer block 108 then heats the battery cell 105. On the one hand, such a design can make the temperature transferred to the isolation membrane 201 more uniform, thereby improving the stability of the heat transfer quality; on the other hand, the heat transfer block 108 can also be designed as needed. Figures 1 to 3 shapes to accommodate workpieces of different sizes or meet different processing requirements.

[0032] In some embodiments of the present invention, the battery cell edge-curling device 100 includes a controller (not shown), which is communicatively connected to the detection module 106 and the hot-pressing element 104. The controller is configured to compare the actual distance between the hot-pressing element 104 and the edge of the separator 201, as detected by the detection module 106, with a preset distance. The controller is also configured to send a temperature increase or decrease signal to the hot-pressing element 104, which then increases or decreases the temperature accordingly. The hot-pressing effect depends not only on the distance between the hot-pressing element 104 and the edge of the separator 201 but also on the temperature of the hot-pressing element 104. The provision of a controller effectively balances these two parameters. Specifically, when the distance between the hot stamping element 104 and the isolation film 201 is too close, the controller detects that the actual distance is less than a preset distance and sends a temperature-lowering signal to the hot stamping element 104 to cool it down. When the distance between the hot stamping element 104 and the isolation film 201 is too far, the controller detects that the actual distance is greater than a preset distance and sends a temperature-raising signal to the hot stamping element 104 to heat it up, thereby maintaining the final ironing effect within a satisfactory range. In addition to using the controller, in some embodiments of the present invention, the user can also determine the ironing effect by viewing the image viewed by the detection module 106 or by directly observing the edge of the battery cell 105, and adjust the temperature of the hot stamping element 104 or the distance between the hot stamping element 104 and the edge of the isolation film 201 accordingly.

[0033] refer to Figure 2In some embodiments of the present invention, the hot stamping member 104 has a bent portion 204, which is used to process the corners 205 of the battery cell 105. The bent portion 204 can better heat the corners 205 of the battery cell 105. The linear heat-stamping mechanism in the prior art is not at the same distance from the separator 201 at the corners 205 of the battery cell 105, resulting in uneven heating and poor heat-stamping effect. The bent portion 204 ensures that the distance between the hot stamping surface 211 and the corners 205 of the battery cell 105 is consistent, resulting in uniform heating. It also has the technical effect of causing the separator 201 at the corners 205 to shrink to the same degree, facilitating the subsequent assembly of batteries using the battery cell 105.

[0034] It should be noted that the reference Figure 2 and Figure 3 In some embodiments of the present invention, the hot stamping part 104 includes a first hot stamping block 212, a second hot stamping block 213 and a third hot stamping block 301, so as to perform hot stamping on the left and right sides of the battery cell 105 and the isolation film 201 at the tail. Figure 2 In some embodiments of the present invention, the battery cell 105 is further provided with a tab 210 at its head, one of which is connected to the first electrode piece 209. The battery cell 105 also includes a second electrode piece, to which the other tab 210 is connected. Tabs 210 serve as a bridge connecting the internal and external circuits of the battery, and their electrical conductivity directly affects the battery's charge and discharge efficiency. A good connection between tabs 210 and the electrode piece ensures that the internal electrical energy of the battery is smoothly transferred to the external circuit or input from the external circuit to the battery, thereby improving the battery's charge and discharge efficiency. Since the tab 210 itself has a certain size and needs to be welded to the battery shell later, a large space is reserved between the end of the tab 210 and the shell. Therefore, the isolation membrane 201 in the middle part of the tab 210 does not need to be ironed. After the battery cell 105 is placed in the shell, this part will not extend outside the shell. Therefore, some embodiments of the present invention do not specifically set the hot stamping part 104 for this area. However, it should be noted that the part between the tabs 210 can also be heat-treated to shrink it. This solution is a derivative embodiment of the present invention and has the same technical effect. As for the isolation membrane 201 on both sides of the tab 210, through Figure 2 The first hot stamping block 212 and the second hot stamping block 213 shown in the figure can be processed together when the left and right sides of the battery cell 105 are hot stamped, and there is no need to set up more hot stamping parts 104.

[0035] refer to Figure 1 and Figure 2In some embodiments of the present invention, the hot stamping assembly 103 further includes a drive module 111, which includes a screw 112 and a drive member 113. One end of the screw 112 is connected to the hot stamping element 104, and the other end of the screw 112 is connected to the drive member 113. The drive member 113 is used to drive the screw 112 to rotate so that the hot stamping element 104 moves closer to or further away from the center of the placement surface 102. The drive module 111 can adjust the distance between the hot stamping element 104 and the isolation film 201, thereby achieving a better hot stamping effect. The screw 112 has high transmission precision and a smooth transmission process, which is compatible with the use scenarios of the present invention that require high-precision adjustment. In the above embodiment, the drive member 113 is a motor. In other embodiments, the drive module 111 can also be a cylinder drive or a hydraulic drive.

[0036] refer to Figure 2 and Figure 3 In some embodiments of the present invention, the placement surface 102 includes a first side 206 and a second side 207 opposite to each other, and a third side 208 connected to the first side 206 and the second side 207 at both ends. There are three hot-iron members 104, which surround the placement surface 102. The hot-iron members 104 have a hot-iron surface 211, which is used to process the isolation film 201. Along the first horizontal direction, the length of the hot-iron surface 211 of the hot-iron member 104 opposite to the first side 206 is greater than the length of the first side 206; along the first horizontal direction, the length of the hot-iron surface 211 of the hot-iron member 104 opposite to the second side 207 is greater than the length of the second side 207; along the second horizontal direction, the length of the hot-iron surface 211 of the hot-iron member 104 opposite to the third side 208 is greater than the length of the third side 208. The first horizontal direction is perpendicular to the second horizontal direction. The placement surface 102 is used to place the battery cell 105. In order to consider the convenience of processing and the stability of placement, the size of the battery cell 105 and the size of the placement surface 102 are slightly different. Therefore, the above design is essentially to make the length of the hot stamping surface 211 in the first horizontal direction and the second horizontal direction greater than the length of the battery cell 105 in the corresponding direction, so that the hot stamping surface 211 can more comprehensively perform hot stamping treatment on the battery cell 105. The hot stamping surface 211 refers to the surface where the hot stamping part 104 and the isolation membrane 201 of the battery cell 105 are arranged facing each other.

[0037] refer to Figure 1 and Figure 3In some embodiments of the present invention, the heat-stamping element 104 is provided with an arcuate groove 114, which is used to wrap around the edge of the battery cell 105. The arcuate groove 114 can bring the upper and lower separators 201 closer to the middle layer of the battery cell 105 after heating, preventing the separators from turning outward. It also improves the adhesion between the layers of separator 201, ensuring a binding force during subsequent hot box testing, reducing shrinkage and improving the test pass rate.

[0038] In some embodiments of the present invention, the battery cell edge curling device 100 further includes a suction mechanism (not shown in the figures) for adsorbing the battery cell 105 onto the placement surface 102. Specifically, in some embodiments of the present invention, the suction mechanism is provided by providing an air inlet on the placement surface 102. By connecting the suction mechanism and the air inlet, the suction mechanism draws air from the air inlet, thereby allowing the placement surface 102 to adsorb the battery cell 105. This design is intended to ensure that the battery cell 105 is placed more stably on the placement member 101 and is less likely to become loose during processing, thereby improving the quality of the edge curling.

[0039] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various modifications can be made within the scope of knowledge possessed by a person skilled in the art without departing from the spirit of the present invention. In addition, the embodiments of the present invention and the features of the embodiments can be combined with each other unless there is a conflict.

Claims

1. Battery core edge ironing equipment, used for ironing the isolation membrane of the battery core, characterized by: include: A placement piece, the placement piece having a placement surface, the placement surface being used to place the battery cell; A hot stamping assembly, comprising a hot stamping piece, wherein the hot stamping piece is used to process the battery core; A detection module is used to detect the distance between the hot stamping element and the edge of the isolation film.

2. The battery core edge ironing equipment according to claim 1, characterized in that: The detection module is configured as a charge coupled device camera detector, and the detection module is provided with a lens, which is spaced apart and facing the placement surface, and is used to capture images of the battery cell and the hot stamping piece.

3. The battery core edge ironing equipment according to claim 2, characterized in that: The placement surface includes a first area and a second area. The first area surrounds an edge connected to the second area. Along the vertical direction, the projection of the lens falls on the projection of the second area.

4. The battery core edge ironing equipment according to claim 1, characterized in that: The hot stamping element includes a heat transfer block and a heating wire. The heat transfer block has a cavity, and the heating wire is arranged in the cavity.

5. The battery core edge ironing equipment according to claim 1, characterized in that: The battery cell edge curling device includes a controller, which is communicatively connected to the detection module and the hot ironing component. The controller is used to compare the actual distance between the hot ironing component and the edge of the isolation film detected by the detection module with a preset distance. The controller is also used to send a temperature increase or decrease signal to the hot ironing component, and the hot ironing component increases or decreases the temperature according to the temperature increase or decrease signal.

6. The battery core edge ironing equipment according to claim 1, characterized in that: The hot stamping piece has a bending portion, and the bending portion is used for processing the corners of the battery core.

7. The battery core edge ironing equipment according to claim 1, characterized in that: The hot stamping component also includes a driving module, which includes a screw and a driving member. One end of the screw is connected to the hot stamping element, and the other end of the screw is connected to the driving member. The driving member is used to drive the screw to rotate so that the hot stamping element approaches or moves away from the center of the placement surface.

8. The battery core edge ironing equipment according to claim 1, characterized in that: The placement surface includes a first side and a second side facing each other, and a third side with two ends connected to the first side and the second side, respectively. The three hot-iron parts are arranged around the placement surface. The hot-iron parts have a hot-iron surface, which is used to process the isolation film. Along a first horizontal direction, the length of the hot-iron surface of the hot-iron part facing the first side is greater than the length of the first side; along the first horizontal direction, the length of the hot-iron surface of the hot-iron part facing the second side is greater than the length of the second side. Along the second horizontal direction, the length of the hot stamping surface of the hot stamping component arranged opposite to the third side is greater than the length of the third side, and the first horizontal direction is perpendicular to the second horizontal direction.

9. The battery core edge ironing equipment according to claim 1, characterized in that: The hot stamping piece is provided with an arc-shaped groove, and the arc-shaped groove is used to wrap the edge of the battery core.

10. The battery core edge ironing equipment according to claim 1, characterized in that: The battery core ironing device further includes an adsorption mechanism, which is used to adsorb the battery core onto the placement surface.

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