Jig

Abstract

The utility model relates to the technical field of battery production equipment, in particular to a jig. The jig comprises a base, a fixed plate, a floating plate and a clamping assembly. The fixing plate is arranged on the base. The floating plate is movably arranged on the base, an adsorption structure used for adsorbing a film is arranged on the upper surface of the floating plate, the floating plate can ascend and descend between a first position and a second position, the floating plate is flush with the fixing plate when located at the first position, and the second position is higher than the first position. The clamping assembly comprises a clamping jaw, the clamping jaw is used for clamping the edge of the lower surface of the battery cell, when the clamping assembly moves to a preset position, the battery cell is located above the floating plate, and the clamping jaw and the floating plate are staggered in the vertical direction.

Description

Technical Field

[0001] The present application relates to the technical field of battery production equipment, and in particular to a fixture. Background Art

[0002] The cell coating process is one of the important processes in the battery production process. By coating the outer surface of the cell with a layer of insulating film, it can protect the cell and prevent the cell from short circuit.

[0003] In the prior art, the membrane is generally placed on a fixture and vacuum-adsorbed, the clamping assembly transports the battery cell and places the battery cell on the membrane, and then the clamping assembly is opened to release the battery cell. However, during the opening process of the clamping assembly, friction between the clamping assembly and the membrane occurs, thereby damaging the membrane. Utility Model Content

[0004] The present application discloses a jig which can avoid damage to a membrane.

[0005] In order to achieve the above objectives, the present application discloses a fixture, comprising:

[0006] Pedestal;

[0007] A fixing plate, the fixing plate being arranged on the base;

[0008] a floating plate, the floating plate being movably disposed on the base, an adsorption structure for adsorbing the film being disposed on an upper surface of the floating plate, the floating plate being capable of being raised and lowered between a first position and a second position, the floating plate being flush with the fixed plate when in the first position, and the second position being higher than the first position; and

[0009] The clamping assembly includes a clamping claw, and the clamping claw is used to clamp the lower surface of the battery core. When the clamping assembly moves to a preset position, the battery core is located above the floating plate, and the clamping claw and the floating plate are staggered in the vertical direction.

[0010] Optionally, the clamping assembly is located above the base; the jig also includes a first clamping assembly, which applies a first downward force to the upper surface of the battery cell to clamp the battery cell in a vertical direction with the clamp, and the first force can push the clamping assembly downward to the preset position and press the battery cell against the floating plate.

[0011] Optionally, the jig further comprises a second clamping assembly, and when the clamping assembly is in the preset position, the jaws open in a horizontal direction, and the second clamping assembly is used to apply a second downward force to the upper surface of the battery cell, and the second force can push the floating plate down from the second position to the first position.

[0012] Optionally, the first pressing assembly includes a first cylinder and a first pressing member, the first pressing member is disposed on a piston of the first cylinder, and the first pressing member can abut against an upper surface of the battery cell to apply the first force;

[0013] The second clamping assembly includes a second cylinder and a second clamping member, the second cylinder is arranged on the first clamping member, the second clamping member is arranged on the piston of the second cylinder, and the second clamping member can abut against the upper surface of the battery cell to apply the second force, and the second force is smaller than the first force.

[0014] Optionally, the fixture further includes a lifting assembly, which is used to apply a third force to the floating plate to push the floating plate to rise from the first position to the second position, and the third force is smaller than the second force.

[0015] Optionally, the lifting assembly includes a lifting cylinder and a pressure reducing valve, the piston of the lifting cylinder is connected to the floating plate to apply the third force to the floating plate, and the pressure reducing valve is connected to the cavity of the lifting cylinder to reduce the pressure of the cavity of the lifting cylinder.

[0016] Optionally, the clamping assembly further includes a holding portion, wherein the holding portion is connected to the second pressing member, and the holding portion is used to clamp an end portion of the battery cell.

[0017] Optionally, the clamping jaw comprises:

[0018] A bearing portion, the bearing portion being used to clamp the lower surface edge of the battery core; and

[0019] A clamping portion is connected to the bearing portion, and the clamping portion clamps the side surface of the battery core.

[0020] Optionally, the fixture further includes a third clamping assembly, which is connected to the base, and when the floating plate descends from the second position to the first position, the third clamping assembly presses against the upper surface of the battery core.

[0021] Optionally, the third pressing assembly includes:

[0022] a rotating portion, the rotating portion being rotatably disposed on the base; and

[0023] The third pressing member is connected to the rotating part. When the floating plate descends from the second position to the first position, the rotating part drives the third pressing member to rotate to the top of the battery cell so that the third pressing member presses against the upper surface of the battery cell.

[0024] Optionally, an adsorption structure for adsorbing the film is provided on the upper surface of the fixing plate.

[0025] Optionally, the fixture further comprises a smoothing mechanism, and when the floating plate descends from the second position to the first position, the smoothing mechanism is used to smooth the film located on the fixed plate.

[0026] Optionally, the smoothing mechanism comprises:

[0027] a first driving member;

[0028] a second driving member, the second driving member being disposed on the first driving member, and the first driving member being capable of driving the second driving member to move horizontally; and

[0029] A caressing plate is arranged on the second driving member, and the second driving member can drive the caressing plate to move vertically.

[0030] Compared with the prior art, the beneficial effects of this application are:

[0031] The jig provided in the present application can prevent the clamping jaws from rubbing against the membrane during the process of pressing the battery cell against the membrane, thereby preventing the membrane from being damaged by friction. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 is a structural schematic diagram of a fixture provided by an embodiment of the present application at a first viewing angle, with a battery cell pressed against a floating plate in a second position;

[0034] Figure 2 is a schematic structural diagram of a portion of a base of a fixture provided in an embodiment of the present application at a second viewing angle;

[0035] Figure 3 is a structural schematic diagram of a base portion of a fixture provided by an embodiment of the present application, in which a floating plate is in a first position at a first viewing angle;

[0036] Figure 4 is a structural schematic diagram of a portion of a base of a fixture provided by an embodiment of the present application, in which a floating plate is in a second position at a first viewing angle;

[0037] Figure 5 is a structural schematic diagram of a portion of a clamping assembly of a jig provided in an embodiment of the present application from a third viewing angle;

[0038] Figure 6 is a schematic structural diagram of the fixture provided in an embodiment of the present application from a third viewing angle;

[0039] Figure 7 It is a schematic diagram of the structure of the fixture provided in the embodiment of the present application at a second viewing angle.

[0040] Description of main reference numerals

[0041] 1-jigs;

[0042] 11- base;

[0043] 12-fixed plate;

[0044] 13- floating plate;

[0045] 14-clamping assembly; 141-clamping claw; 1411-bearing portion; 1412-clamping portion; 142-holding portion;

[0046] 151-first pressing assembly; 1511-first cylinder; 1512-first pressing member;

[0047] 152-second pressing assembly; 1521-second cylinder; 1522-second pressing member;

[0048] 153-third pressing assembly; 1531-rotating portion; 1532-third pressing member;

[0049] 161- rod body;

[0050] 17-smoothing mechanism; 171-first driving member; 172-second driving member; 173-smoothing plate;

[0051] 2-Battery cells. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0053] In this application, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0054] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0055] The technical solution of the present application will be further described below in conjunction with specific embodiments and drawings.

[0056] Please also see Figure 1 and Figure 2 The present application discloses a fixture 1, which includes a base 11, a fixed plate 12, a floating plate 13 and a clamping assembly 14. The fixed plate 12 is disposed on the base 11. Please refer to Figure 3 and Figure 4 The floating plate 13 is movably disposed on the base 11. The upper surface of the floating plate 13 is provided with an adsorption structure for the adsorption film. The floating plate 13 can be raised and lowered between a first position and a second position. When the floating plate 13 is in the first position, it is flush with the fixed plate 12. The second position is higher than the first position. Please refer again Figure 1 and Figure 5 The clamping assembly 14 includes a clamping claw 141, which is used to clamp the lower surface of the battery cell 2. When the clamping assembly 14 moves to a preset position, the battery cell 2 is located above the floating plate 13, and the clamping claw 141 is staggered from the floating plate 13 in the vertical direction.

[0057] In this embodiment, the film can be a polyester film (also called mylar film). Of course, in other embodiments, the film can also be other types of films, which are not limited here.

[0058] Among them, the fixed plate 12 is fixed and stationary, and the floating plate 13 can be raised and lowered between a first position and a second position in the vertical direction. When the floating plate 13 is in the first position, the floating plate 13 is flush with the fixed plate 12. In other words, the upper surface of the floating plate 13 and the upper surface of the fixed plate 12 are in the same horizontal plane. When the floating plate 13 rises from the first position to the second position, the upper surface of the floating plate 13 is higher than the upper surface of the fixed plate 12.

[0059] The width direction of the battery cell 2 is parallel to the width direction of the floating plate 13, and the width of the battery cell 2 is greater than the width of the floating plate 13. When the clamping assembly 14 clamps the battery cell 2 and moves to a preset position, the battery cell 2 is located above the floating plate 13, and the lower surface of the battery cell 2 and the floating plate 13 are opposite to each other in the vertical direction, and the center line of the battery cell 2 in the direction perpendicular to the width and the center line of the floating plate 13 in the direction perpendicular to the width are in the same vertical plane.

[0060] It should be noted that, in the present embodiment, the clamping jaw 141 is clamped on the lower surface of the battery cell 2 near the edge so as to be staggered with the floating plate 13 in the vertical direction. In other words, the clamping jaw 141 does not interfere with the floating plate 13 in the vertical direction. That is to say, when the floating plate 13 is projected to the lower surface of the battery cell 2 in the vertical direction, the projection of the floating plate 13 does not overlap with the clamping jaw 141.

[0061] The working principle of the fixture 1 of the first embodiment provided in the present application is as follows: the membrane includes a first membrane portion and a second membrane portion that are connected. In the initial stage, the floating plate 13 is in the first position, the upper surface of the floating plate 13 is flush with the upper surface of the fixed plate 12, the membrane covers the upper surface of the floating plate 13 and the upper surface of the fixed plate 12, and the first membrane portion covers the upper surface of the floating plate 13 and is adsorbed by the adsorption structure disposed on the upper surface of the floating plate 13, and the second membrane portion covers the upper surface of the fixed plate 12. It can be understood that since the adsorption structure disposed on the upper surface of the floating plate 13 adsorbs the first membrane portion, the relative position between the first membrane portion and the floating plate 13 can remain unchanged.

[0062] During the loading stage, the floating plate 13 rises from the first position to the second position, and at the same time drives the first membrane portion to rise. It can be understood that the second membrane portion is in a naturally drooping state because it is not adsorbed by the fixed plate 12. It should be noted that the membrane of this embodiment has a certain toughness and rigidity, so the second membrane portion is in a naturally drooping state, which means that the second membrane portion is inclined relative to the horizontal plane and is lower than the first membrane portion.

[0063] In addition, the clamping assembly 14 clamps the battery cell 2 and moves to a preset position, so that the battery cell 2 is located above the floating plate 13, and the surface of the second membrane portion facing away from the floating plate 13 is attached to the lower surface of the battery cell 2. It should be noted that the floating plate 13 is in the second position at this time. It can be understood that the width direction of the second membrane portion is parallel to the width direction of the floating plate 13. Since the width of the battery cell 2 is greater than the width of the floating plate 13, the width of the battery cell 2 is greater than the width of the second membrane portion. At this time, the clamping claw 141 clamps the edge of the lower surface of the battery cell 2 and is staggered with the floating plate 13 in the vertical direction. It is worth mentioning that since the second membrane portion is in a naturally drooping state, the distance between the second membrane portion and the lower surface of the battery cell 2 in the vertical direction is large. At this time, the clamping claw 141 may not be in contact with the second membrane portion. Of course, the clamping claw 141 may also be in contact with the second membrane portion, which is not limited here.

[0064] During the unloading stage, the clamping jaws 141 are opened to be offset from the battery cells 2 in the vertical direction, so that the battery cells 2 can descend along with the floating plate 13 . It should be noted that if the clamping assembly 14 is in the preset position and the jaw 141 is not in contact with the second membrane portion, no friction will be generated with the second membrane portion during the opening of the jaw 141; if the clamping assembly 14 is in the preset position and the jaw 141 is in contact with the second membrane portion, since the second membrane portion is in a naturally drooping state at this time, that is, the second membrane portion is not subjected to an upward bearing force in the vertical direction, the jaw 141 will exert a downward force on the second membrane portion when in contact with the second membrane portion, so that the portion of the second membrane portion that does not contact the jaw 141 will shift downward, while increasing the vertical distance between the portion of the second membrane portion that does not contact the jaw 141 and the jaw 141. During the opening of the jaw 141, when the jaw 141 is separated from the portion of the second membrane portion that contacts the jaw 141, no friction will be generated between the jaw 141 and the second membrane portion, thereby avoiding friction loss of the second membrane portion.

[0065] After the clamping jaws 141 are opened, the floating plate 13 descends from the second position to the first position, during which the battery cell 2 can move synchronously with the floating plate 13, and the relative position between the battery cell 2 and the floating plate 13 remains unchanged. At the same time, the second membrane portion covers the upper surface of the fixed plate 12 again.

[0066] In summary, in the jig 1 provided in the embodiment of the present application, when the battery cell 2 is pressed against the film, the clamping jaws 141 will not generate friction with the film, thereby preventing the film from being damaged by friction.

[0067] See also Figure 5In some embodiments, the clamping assembly 14 is located above the base 11. The fixture 1 further includes a first clamping assembly 151, which applies a first downward force to the upper surface of the battery cell 2 to clamp the battery cell 2 in the vertical direction with the clamping jaws 141, and the first force can push the clamping assembly 14 to move downward to a preset position and press the battery cell 2 against the floating plate 13.

[0068] In this embodiment, the clamping assembly 14 is located above the base 11 and can move closer to or farther from the base 11 in the vertical direction.

[0069] During the loading stage, the first clamping assembly 151 applies a first downward force to the upper surface of the battery cell 2, so as to clamp the battery cell 2 in the vertical direction with the clamping claw 141 clamped on the lower surface of the battery cell 2. In addition, the first force pushes the battery cell 2 to drive the clamping assembly 14 to move downward to a preset position, and the battery cell 2 is pressed against the floating plate 13 in the second position. It should be noted that at this time, the battery cell 2 is pressed against the side surface of the second membrane portion away from the floating plate 13, that is, the battery cell 2 is pressed against the floating plate 13 by indirect pressing.

[0070] In this embodiment, the clamping assembly 14 is arranged above the base 11, and the first clamping assembly 151 pushes the battery cell 2 to move downward, so that the battery cell 2 does not move in the horizontal direction relative to the floating plate 13 during the movement, thereby saving the step of adjusting the relative position between the battery cell 2 and the floating plate 13 in the horizontal direction, thereby saving time.

[0071] In some other embodiments, the first force can push the clamping assembly 14 to move horizontally to a preset position.

[0072] Please continue reading Figure 5 In some more specific embodiments, the fixture 1 also includes a second clamping component 152. When the clamping component 14 is in a preset position, the clamping jaws 141 open in a horizontal direction, and the second clamping component 152 is used to apply a second downward force to the upper surface of the battery cell 2. The second force can push the floating plate 13 down from the second position to the first position.

[0073] In this embodiment, when the first clamping member 1512 pushes the battery cell 2 and drives the clamping assembly 14 to move downward to a preset position, the first clamping member 1512 cannot continue to move downward, and the first force no longer continues to act on the upper surface of the battery cell 2, so the first force cannot continue to push the battery cell 2 to move downward.

[0074] During the unloading stage, the clamping jaws 141 are opened to be offset from the battery cell 2 in the vertical direction. At this time, the second clamping assembly 152 applies a second downward force to the upper surface of the battery cell 2. The second force pushes the battery cell 2 to drive the floating plate 13 to move downward, so that the floating plate 13 drops from the second position to the first position.

[0075] In the embodiment of the present application, the second force applied by the second clamping assembly 152 to the battery cell 2 pushes the battery cell 2 and the floating plate 13 to move downward, which can avoid the first clamping assembly 151 from having an excessively long stroke, thereby improving the stability of the first clamping assembly 151 .

[0076] In some other more specific embodiments, the first force may also continue to push the battery core 2 to move downward, so as to push the floating plate 13 to drop from the second position to the first position.

[0077] Please continue reading Figure 5 In some embodiments, the first pressing assembly 151 includes a first cylinder 1511 and a first pressing member 1512, the first pressing member 1512 is disposed on the piston of the first cylinder 1511, and the first pressing member 1512 can abut against the upper surface of the battery cell 2 to apply a first force. The second pressing assembly 152 includes a second cylinder 1521 and a second pressing member 1522, the second cylinder 1521 is disposed on the first pressing member 1512, the second pressing member 1522 is disposed on the piston of the second cylinder 1521, and the second pressing member 1522 can abut against the upper surface of the battery cell 2 to apply a second force, and the second force is less than the first force.

[0078] In this embodiment, the piston of the first cylinder 1511 and the piston of the second cylinder 1521 each have only one starting position and one stopping position. When the piston starts at the starting position, it can only stop when the piston reaches the stopping position.

[0079] Specifically, during the loading stage, the piston of the first cylinder 1511 starts to move downward at the starting position, and applies a first force to the upper surface of the battery cell 2 through the first pressing member 1512 to push the battery cell 2 and the clamping assembly 14 to move downward; when the piston of the first cylinder 1511 reaches the stop position and cannot continue to move downward, the clamping assembly 14 moves to the preset position and cannot continue to move downward. At this time, the battery cell 2 is pressed against the floating plate 13 in the second position. It should be noted that during this process, the second cylinder 1521 moves downward following the first pressing member 1512, and the piston of the second cylinder 1521 is in the starting position and is stationary.

[0080] During the unloading stage, the piston of the second cylinder 1521 starts to move downward at the starting position, and applies a second force to the upper surface of the battery cell 2 through the second pressing member 1522 to push the battery cell 2 and the floating plate 13 to move downward; when the piston of the second cylinder 1521 reaches the stop position and cannot continue to move downward, the floating plate 13 is lowered from the second position to the first position, at which time the battery cell 2 is pressed against the floating plate 13 in the first position, and the edge of the battery cell 2 is pressed against the fixed plate 12, that is, the battery cell 2 is pressed against the upper surface of the floating plate 13 and the upper surface of the fixed plate 12. It should be noted that at this time, the battery cell 2 is pressed against the side surface of the first membrane portion away from the floating plate 13 and the side surface of the second membrane portion away from the fixed plate 12, that is, the battery cell 2 is indirectly pressed against the upper surface of the floating plate 13 and the upper surface of the fixed plate 12 through the membrane.

[0081] It is worth mentioning that in this embodiment, the second cylinder 1521 is arranged on the first pressing member 1512. When the piston of the second cylinder 1521 applies the second force to the upper surface of the battery cell 2 through the second pressing member 1522, the second cylinder 1521 is simultaneously subjected to an upward reaction force equal to the second force. The reaction force is applied by the second cylinder 1521 to the first pressing member 1512, so that the piston of the first cylinder 1511 is subjected to an upward force equal to the second force. Therefore, in order to prevent the piston of the first cylinder 1511 from moving upward during the unloading stage, the first force needs to be greater than the second force so that the piston of the first cylinder 1511 is in a stopped position and remains stationary.

[0082] In some other embodiments, the piston of the first cylinder 1511 and the piston of the second cylinder 1521 may directly abut against the upper surface of the battery cell 2 .

[0083] Please also read Figure 3 and Figure 4 In some more specific embodiments, the fixture 1 further includes a lifting assembly, which is used to apply a third force to the floating plate 13 to push the floating plate 13 from the first position to the second position, and the third force is smaller than the second force.

[0084] In this embodiment, the lifting assembly is connected to the lower surface of the floating plate 13 and can apply a third upward force to the floating plate 13 to push the floating plate 13 up from the first position to the second position.

[0085] It should be noted that, in the process of the second force pushing the battery cell 2, i.e., the floating plate 13 downward, the third force continuously acts on the floating plate 13 to avoid the floating plate 13 and the battery cell 2 from separating in the vertical direction. At the same time, the third force is smaller than the second force, so that the second force can push the battery cell 2 and the floating plate 13 downward.

[0086] In some other more specific embodiments, the third force may also be equal to the second force, and during the process of the battery core 2 and the floating plate 13 descending, the lifting assembly descends synchronously.

[0087] Please continue reading Figure 3 and Figure 4 In some embodiments, the lifting assembly (not shown in the figure) includes a lifting cylinder (not shown in the figure) and a pressure reducing valve (not shown in the figure). The piston of the lifting cylinder is connected to the floating plate 13 to apply a third force to the floating plate 13. The pressure reducing valve is connected to the cavity of the lifting cylinder to reduce the pressure of the cavity of the lifting cylinder.

[0088] The piston of the lifting cylinder can be indirectly connected to the floating plate 13. For example, the piston of the lifting cylinder abuts against one end of the rod 161, and the floating plate 13 is connected to the other end of the rod 161, so that the piston of the lifting cylinder can push the floating plate 13 from the first position to the second position through the rod 161. Of course, the piston of the lifting cylinder can also be directly connected to the floating plate 13, which is not limited here.

[0089] In this embodiment, the piston of the lifting cylinder applies a third upward force to the floating plate 13 to push the floating plate 13 up from the first position to the second position.

[0090] Meanwhile, while the second force pushes the battery cell 2 and the floating plate 13 downward, the third force continuously acts on the floating plate 13 to prevent the floating plate 13 from separating from the battery cell 2 in the vertical direction. During this process, the piston of the lifting cylinder is gradually retracted into the cavity of the lifting cylinder.

[0091] It is worth noting that, in the process of the piston of the lifting cylinder gradually retracting the cavity of the lifting cylinder, the pressure in the cavity of the lifting cylinder will gradually increase, so that the third force will gradually increase. It may happen that when the floating plate 13 has not dropped to the first position, the third force increases to be equal to the second force, so that the second force cannot continue to push the battery cell 2 and the floating plate 13 to drop. In order to solve this problem, the present embodiment adds a pressure reducing valve. In the process of the piston of the lifting cylinder gradually retracting the cavity of the lifting cylinder, the pressure reducing valve continuously adjusts the pressure of the cavity of the lifting cylinder, so that the pressure of the cavity of the lifting cylinder can remain unchanged, thereby keeping the magnitude of the third force unchanged.

[0092] In some other embodiments, the lifting cylinder may move downward to keep applying the third force to the floating plate 13 .

[0093] Please refer again Figure 5 In some more specific embodiments, the clamping assembly 14 further includes a retaining portion 142 , which is connected to the second pressing member 1522 , and is used to clamp the end of the battery cell 2 .

[0094] It can be understood that the end of the battery cell 2 is equipped with a top cover, but the top cover and the battery cell 2 are in an active state. The retaining portion 142 clamps the end of the battery cell 2 to clamp the top cover to the end of the battery cell 2. At the same time, the retaining portion 142 can also limit the position of the battery cell 2 in a direction perpendicular to the end face of the battery cell 2.

[0095] In addition, the retaining portion 142 is connected to the second clamping member 1522, so that the retaining portion 142 can move synchronously with the second clamping member 1522, so that the retaining portion 142 can always clamp the end of the battery cell 2 during the process of the clamping assembly 14 moving to the preset position and the process of the floating plate 13 descending from the second position to the first position.

[0096] In some other more specific implementations, the ends of the battery core 2 may also be clamped by the clamping claws 141 .

[0097] Please continue reading Figure 5 In some embodiments, the clamp 141 includes a bearing portion 1411 and a clamping portion 1412 , the bearing portion 1411 clamps the lower surface edge of the battery cell 2 , the clamping portion 1412 is connected to the bearing portion 1411 , and the clamping portion 1412 clamps the side of the battery cell 2 .

[0098] In this embodiment, the supporting portion 1411 clamps the lower surface of the battery cell 2, thereby limiting the position of the battery cell 2 in the vertical direction, and the clamping portion 1412 clamps the side of the battery cell 2, thereby limiting the position of the battery cell 2 in a direction perpendicular to the end face of the battery cell 2 and parallel to the horizontal plane.

[0099] In some other embodiments, a gap may be formed between the clamping portion 1412 of the clamping jaw 141 and the side surface of the battery core 2 .

[0100] Please refer again Figure 3 and Figure 4 In some embodiments, the fixture 1 further includes a third clamping assembly 153 , which is connected to the base 11 . When the floating plate 13 descends from the second position to the first position, the third clamping assembly 153 presses against the upper surface of the battery cell 2 .

[0101] In this embodiment, when the floating plate 13 is lowered from the second position to the first position, the third pressing member 1532 is pressed against the upper surface of the battery cell 2 and exerts a downward force on the upper surface of the battery cell 2, so that the battery cell 2 is pressed against the surface of the membrane that is away from the floating plate 13 and the fixed plate 12, thereby preventing the battery cell 2 and the membrane from moving relative to each other. At the same time, the clamping assembly 14 can be reset.

[0102] In some other embodiments, the third pressing assembly 153 may also be clamped on the side of the battery core 2 .

[0103] Please continue reading Figure 3 and Figure 4 In some embodiments, the third clamping assembly 153 includes a rotating portion 1531 and a third clamping member 1532. The rotating portion 1531 is rotatably disposed on the base 11, and the third clamping member 1532 is connected to the rotating portion 1531. When the floating plate 13 descends from the second position to the first position, the rotating portion 1531 drives the third clamping member 1532 to rotate to the top of the battery cell 2 so that the third clamping member 1532 is pressed against the upper surface of the battery cell 2.

[0104] In this embodiment, before the floating plate 13 descends from the second position to the first position, the third clamping member 1532 is staggered from the floating plate 13 and the fixed plate 12 in the vertical direction. In other words, the projection of the third clamping member 1532 in the vertical direction will not overlap with the fixed plate 12 and the floating plate 13, thereby avoiding the third clamping member 1532 from interfering with the floating plate 13 or the battery cell 2.

[0105] When the floating plate 13 descends from the second position to the first position, the rotating portion 1531 drives the third clamping member 1532 to rotate horizontally to above the battery cell 2, so that the third clamping member 1532 can press against the upper surface of the battery cell 2, thereby pressing the battery cell 2 to the side surface of the membrane away from the floating plate 13 and the fixed plate 12.

[0106] In some other embodiments, the third pressing member 1532 may also slide in the horizontal direction.

[0107] In some embodiments, an adsorption structure for adsorbing the film is disposed on the upper surface of the fixing plate 12 .

[0108] In this embodiment, the adsorption structure disposed on the upper surface of the fixed plate 12 and the adsorption structure disposed on the upper surface of the floating plate 13 may be the same.

[0109] In the initial stage, the adsorption structure on the upper surface of the floating plate 13 adsorbs the first membrane portion, and the adsorption structure on the upper surface of the fixed plate 12 adsorbs the second membrane portion.

[0110] During the loading stage, the adsorption structure on the upper surface of the floating plate 13 continues to adsorb the first membrane portion, and the adsorption structure on the upper surface of the fixed plate 12 stops adsorbing the second membrane portion, so that the floating plate 13 can drive the first membrane portion to move synchronously to limit the relative position between the first membrane portion and the floating plate 13, and at the same time the second membrane portion is separated from the fixed plate 12.

[0111] During the unloading stage, when the floating plate 13 descends from the second position to the first position, the second membrane portion covers the upper surface of the fixed plate 12 , and the adsorption structure on the upper surface of the fixed plate 12 adsorbs the second membrane portion again, thereby limiting the position of the membrane.

[0112] In some other embodiments, a suction structure for sucking the edge of the film is disposed on the side of the fixing plate 12 .

[0113] Please also read Figure 6 and Figure 7 In some embodiments, the fixture 1 further includes a smoothing mechanism 17 , and when the floating plate 13 descends from the second position to the first position, the smoothing mechanism 17 is used to smooth the film on the fixed plate 12 .

[0114] It is understandable that when the floating plate 13 is in the second position, the second membrane portion is in a naturally drooping state, so that some parts of the second membrane portion may be curled. Therefore, when the floating plate 13 is lowered from the second position to the first position, the second membrane portion covers the upper surface of the fixed plate 12 again, but it is possible that the curled part of the second membrane portion cannot fit the upper surface of the fixed plate 12. In order to solve this problem, the present embodiment is provided with a smoothing mechanism 17. When the floating plate 13 is lowered from the second position to the first position, the smoothing mechanism 17 presses the second membrane portion against the upper surface of the fixed plate 12, so that the second membrane portion and the fixed plate 12 are completely fitted.

[0115] In some other embodiments, the film on the fixing plate 12 may also be smoothed manually.

[0116] Please continue reading Figure 6 and Figure 7 In some embodiments, the smoothing mechanism 17 includes a first driving member 171, a second driving member 172, and a smoothing plate 173. The second driving member 172 is disposed on the first driving member 171, and the first driving member 171 can drive the second driving member 172 to move horizontally. The smoothing plate 173 is disposed on the second driving member 172, and the second driving member 172 can drive the smoothing plate 173 to move vertically.

[0117] In this embodiment, when the floating plate 13 descends from the second position to the first position, the caressing plate 173 and the fixing plate 12 are staggered from each other in the vertical direction to prevent the caressing plate 173 from affecting the second membrane portion.

[0118] When the floating plate 13 descends from the second position to the first position, the first driving member 171 drives the second driving member 172 to move horizontally, so as to drive the caressing plate 173 to move horizontally to above the fixed plate 12; then the second driving member 172 drives the caressing plate 173 to descend, so that the caressing plate 173 presses the film on the fixed plate 12 against the fixed plate 12.

[0119] In some other embodiments, the caressing plate 173 is rotatably disposed on the base 11 .

[0120] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A fixture, characterized in that: Used to press the battery cell assembly onto the film, the jig comprises: Pedestal; A fixing plate, the fixing plate being arranged on the base; a floating plate, the floating plate being movably disposed on the base, an adsorption structure for adsorbing the film being disposed on an upper surface of the floating plate, the floating plate being capable of being raised and lowered between a first position and a second position, the floating plate being flush with the fixed plate when in the first position, and the second position being higher than the first position; and The clamping assembly includes a clamping claw, and the clamping claw is used to clamp the lower surface of the battery core. When the clamping assembly moves to a preset position, the battery core is located above the floating plate, and the clamping claw and the floating plate are staggered in the vertical direction.

2. The fixture according to claim 1, characterized in that: The clamping assembly is located above the base; the fixture also includes a first clamping assembly, which applies a first downward force to the upper surface of the battery cell to clamp the battery cell in a vertical direction with the clamp, and the first force can push the clamping assembly downward to the preset position and press the battery cell against the floating plate.

3. The fixture according to claim 2, characterized in that: The fixture also includes a second clamping assembly. When the clamping assembly is in the preset position, the clamping jaws open in the horizontal direction. The second clamping assembly is used to apply a second downward force to the upper surface of the battery cell. The second force can push the floating plate down from the second position to the first position.

4. The fixture according to claim 3, characterized in that: The first pressing assembly includes a first cylinder and a first pressing member, wherein the first pressing member is disposed on a piston of the first cylinder, and the first pressing member can abut against an upper surface of the battery cell to apply the first force; The second clamping assembly includes a second cylinder and a second clamping member, the second cylinder is arranged on the first clamping member, the second clamping member is arranged on the piston of the second cylinder, and the second clamping member can abut against the upper surface of the battery cell to apply the second force, and the second force is smaller than the first force.

5. The fixture according to claim 4, characterized in that: The fixture further includes a lifting assembly, which is used to apply a third force to the floating plate to push the floating plate to rise from the first position to the second position, and the third force is smaller than the second force.

6. The fixture according to claim 5, characterized in that: The lifting assembly includes a lifting cylinder and a pressure reducing valve. The piston of the lifting cylinder is connected to the floating plate to apply the third force to the floating plate. The pressure reducing valve is connected to the cavity of the lifting cylinder to reduce the pressure of the cavity of the lifting cylinder.

7. The fixture according to any one of claims 4 to 6, characterized in that: The clamping assembly further includes a holding portion, which is connected to the second pressing member and is used to clamp the end of the battery core.

8. The fixture according to any one of claims 1 to 6, characterized in that: The clamping jaws include: a bearing portion, the bearing portion clamping the lower surface edge of the battery cell; and A clamping portion is connected to the bearing portion, and the clamping portion clamps the side surface of the battery core.

9. The fixture according to any one of claims 1 to 6, characterized in that: The fixture further includes a third pressing assembly connected to the base. When the floating plate descends from the second position to the first position, the third pressing assembly presses against the upper surface of the battery core.

10. The fixture according to claim 9, characterized in that: The third pressing assembly comprises: a rotating part, the rotating part being rotatably disposed on the base; and The third pressing member is connected to the rotating part. When the floating plate descends from the second position to the first position, the rotating part drives the third pressing member to rotate to the top of the battery cell so that the third pressing member presses against the upper surface of the battery cell.

11. The fixture according to any one of claims 1 to 6, characterized in that: An adsorption structure for adsorbing the film is disposed on the upper surface of the fixing plate.

12. The fixture according to any one of claims 1 to 6, characterized in that: The fixture further includes a smoothing mechanism, and when the floating plate descends from the second position to the first position, the smoothing mechanism is used to smooth the film located on the fixed plate.

13. The fixture according to claim 12, characterized in that: The smoothing mechanism comprises: a first driving member; a second driving member, the second driving member being disposed on the first driving member, and the first driving member being capable of driving the second driving member to move horizontally; and A caressing plate is arranged on the second driving member, and the second driving member can drive the caressing plate to move vertically.

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