A battery separator strength detection apparatus

Abstract

The application relates to the technical field of battery diaphragm detection, and discloses a battery diaphragm strength detection device, which comprises a placing plate slidingly arranged on a base, a liftable adjusting seat arranged above the placing plate, a first flattening plate arranged below the adjusting seat and used for horizontally flattening the battery diaphragm, and a liftable cutting knife arranged above the first flattening plate. A receiving groove is arranged on the lower surface of the first flattening plate, a sliding block is elastically arranged in the receiving groove, a first sliding rod is fixed to the surface of the sliding block, a first inclined groove for the sliding of the first sliding rod is arranged on the inner wall of the receiving groove, and a connecting rod is arranged on the lower surface of the sliding block. Before the tensile strength of the battery diaphragm is detected, the edges of the battery diaphragm can be cut, so that the edges of the battery diaphragm are kept flush, and the problem that the accuracy of the detection result is reduced due to the uneven edges of the battery diaphragm is reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of battery diaphragm detection, in particular to a battery diaphragm strength detection device. BACKGROUND

[0002] The battery diaphragm is a key component between the positive electrode and the negative electrode in a lithium ion battery and is made of polymer materials such as polyethylene and polypropylene. In order to detect the quality of the battery diaphragm, the tensile strength of the battery diaphragm needs to be detected, that is, the two ends of the battery diaphragm are clamped and pulled until the battery diaphragm is pulled off, and the tensile strength detection of the battery diaphragm is completed.

[0003] However, during the tensile strength detection of the battery diaphragm, the battery diaphragm needs to be sampled, and the battery diaphragm needs to be cut to a proper size during sampling. Since the battery diaphragm sample is generally cut by manual cutting, the edges of the battery diaphragm may have unevenness or notches. If the manually cut battery diaphragm is directly used for tensile strength detection, the uneven or notched positions are more likely to be pulled off during the tensile strength detection, thereby affecting the accuracy of the detection. SUMMARY

[0004] The application provides a battery diaphragm strength detection device. During detection, the edges of the battery diaphragm are synchronously cut by a cutting knife, so that the flatness of the edges of the battery diaphragm is ensured, and the problem that the uneven or notched positions are more likely to be pulled off during the tensile strength detection, thereby affecting the accuracy of the detection, mentioned in the background technology is solved.

[0005] The application provides the following technical scheme: a battery diaphragm strength detection device, comprising a placing plate slidingly arranged on a base, a liftable adjusting seat arranged above the placing plate, a first flattening plate arranged below the adjusting seat and used for horizontally flattening a battery diaphragm, and a liftable cutting knife arranged above the first flattening plate.

[0006] A receiving groove is formed in the lower surface of the first flattening plate, an elastic sliding block is arranged in the receiving groove, a first sliding rod is fixed to the surface of the sliding block, a first inclined groove for sliding the first sliding rod is formed in the inner wall of the receiving groove, a connecting rod is arranged on the lower surface of the sliding block, and a second flattening plate arranged at the bottom of the connecting rod is used for vertically flattening the battery diaphragm.

[0007] As an optional solution of the battery diaphragm strength detection device, a top plate is slidingly arranged in the receiving groove, a first spring and an extension rod are fixed between the top plate and the sliding block, and the first spring is sleeved on the circumference of the extension rod.

[0008] As an optional scheme of the battery diaphragm strength detection equipment, the lower surface of the adjusting seat is provided with a first sliding groove, a moving seat is slidably arranged in the first sliding groove, a transmission column is fixed between the moving seat and the first spreading plate, and a first servo cylinder is fixed on the surface of the adjusting seat.

[0009] As an optional scheme of the battery diaphragm strength detection equipment, the connecting rod is rotatably connected with the sliding block, a gear is fixed on the circumference of the connecting rod, a first support frame is fixed on the outer surface of the adjusting seat, and a toothed plate for engaging with the gear is arranged at the bottom end of the first support frame.

[0010] As an optional scheme of the battery diaphragm strength detection equipment, a slot is arranged on the surface of the connecting rod, a plug rod is inserted into the slot, a first limiting ball is fixed at the end of the plug rod, and a first track groove for sliding the first limiting ball is arranged in the inner part of the receiving groove. The first track groove comprises a horizontal part and an inward moving part which are connected.

[0011] As an optional scheme of the battery diaphragm strength detection equipment, a circular ring is slidably arranged on the circumference of the connecting rod, a positioning rod is fixed between the circular ring and the sliding block, the second spreading plate comprises a first plate and a second plate, square rods are fixed on the top of the first plate and the second plate, the square rods are slidably inserted into the bottom of the connecting rod, second slide rods are fixed on the top of the first plate and the second plate, and an annular groove for sliding the second slide rods is arranged on the lower surface of the circular ring.

[0012] As an optional scheme of the battery diaphragm strength detection equipment, a second limiting ball is fixed at the end of the second slide rod, a second track groove for sliding the second limiting ball is arranged on the inner wall of the annular groove, and the second track groove comprises a horizontal part, an upward part and a downward part which are connected.

[0013] As an optional scheme of the battery diaphragm strength detection equipment, the first spreading plate comprises a fixed part and a rotating part, the rotating part is rotatably connected with the fixed part, a servo motor is fixed on the surface of the fixed part, the output end of the servo motor is fixed with the rotating part, and a missing slot for inserting the toothed plate is arranged on the rotating part.

[0014] As an optional scheme of the battery diaphragm strength detection equipment, a transmission rod is elastically arranged in the inner part of the first support frame, a resisting block is fixed at the end of the transmission rod, a resisting rod is fixed on the surface of the moving seat, a second sliding groove is arranged on the first support frame, and the toothed plate slides in the second sliding groove by the resisting of the resisting rod and the resisting block.

[0015] As an optional solution of the battery diaphragm strength detection equipment, the end of the placing plate is fixed with a second support frame, a second servo cylinder is fixed on the second support frame, the output end of the second servo cylinder is fixed with the adjusting seat, a third servo cylinder is fixed on the base, the output end of the third servo cylinder is fixed with the second support frame, a back plate is fixed on the surface of the base, a cross bar is fixed on the top of the back plate, a fourth servo cylinder is fixed on the surface of the cross bar, and the output end of the fourth servo cylinder is fixed with the cutting knife.

[0016] The battery diaphragm strength detection equipment has the following beneficial effects:

[0017] 1. The battery diaphragm strength detection equipment can lay the battery diaphragm horizontally before cutting, so as to reduce the wrinkling of the battery diaphragm and facilitate the cutting of the battery diaphragm by the subsequent cutting knife, thereby increasing the flatness of the cutting.

[0018] In order to increase the laying effect of the battery diaphragm, the second laying plate contacts the battery diaphragm before the first laying plate lays the battery diaphragm, so as to reduce the contact area with the battery diaphragm, and the second laying plate can lay the battery diaphragm vertically, thereby reducing the pressure marks on the surface of the battery diaphragm caused by the downward movement of the first laying plate, and making the laying effect better.

[0019] 2. After the second laying plate lays the battery diaphragm vertically, the second laying plate moves to the two ends of the first laying plate, the gear is engaged with the toothed plate at this time, and then the first laying plate lays the battery diaphragm horizontally and drives the second laying plate to move, at this time, the engagement of the gear and the toothed plate makes the gear drive the connecting rod to rotate, the connecting rod drives the second laying plate to rotate, and the rotation of the second laying plate can lay the battery diaphragm outward, thereby reducing the unevenness and further improving the laying effect.

[0020] 3、The battery diaphragm strength detection equipment divides the second spreading plate into the first plate and the second plate, the first plate and the second plate rotate along with the connecting rod when the second spreading plate rotates, the first plate and the second plate drive the second sliding rod to slide along the annular groove, the second sliding rod drives the second limiting ball to slide along the second track groove, so that the first plate and the second plate can be lifted when rotating from the outer edge of the battery diaphragm to the inner side, and there is no friction between the first plate and the second plate and the battery diaphragm, so that the edge of the battery diaphragm is not offset to the inner side along with the first plate and the second plate, so that the first plate and the second plate do not cause the battery diaphragm to be uneven during rotation, and the first plate and the second plate achieve the effect of spreading the battery diaphragm outward during rotation. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the application.

[0022] Figure 2 It is a structural sectional view of the first spreading plate part in the application.

[0023] Figure 3 It is an enlarged view of A in the application. Figure 2

[0024] Figure 4 It is an enlarged view of B in the application. Figure 2

[0025] Figure 5 It is a connecting structure sectional view between the connecting rod and the sliding block in the application.

[0026] Figure 6 It is a structural schematic diagram of the first track groove part in the application.

[0027] Figure 7 It is a structural sectional view of the first spreading plate in the application.

[0028] Figure 8 It is an enlarged view of C in the application. Figure 7

[0029] Figure 9 It is a structural schematic diagram of the second track groove part in the application.

[0030] Figure 10 It is a top view structural sectional view between the adjusting seat and the first support frame in the application.

[0031] Figure 11 It is a structural schematic diagram of the rotating part relative to the fixed part after rotation in the application.

[0032] ​​​In the figure: 1, base; 2, placing plate; 3, adjusting seat; 4, battery diaphragm; 5, first spreading plate; 501, fixed part; 502, rotating part; 6, cutting knife; 7, storage groove; 8, sliding block; 9, first sliding rod; 10, first inclined groove; 11, connecting rod; 12, second spreading plate; 121, first plate; 122, second plate; 13, top plate; 14, first spring; 15, telescopic rod; 16, first sliding groove; 17, moving seat; 18, transmission column; 19, first servo cylinder; 20, gear; 21, first support frame; 22, toothed plate; 23, insertion slot; 24, insertion rod; 25, first limiting ball; 26, first track groove; 261, translation part; 262, internal translation part; 27, circular ring; 28, positioning rod; 29, square rod; 30, second sliding rod; 31, annular groove; 32, second limiting ball; 33, second track groove; 331, horizontal part; 332, rising part; 333, falling part; 34, servo motor; 35, missing groove; 36, transmission rod; 37, abutting block; 38, abutting rod; 39, second sliding groove; 40, second support frame; 41, second servo cylinder; 42, third servo cylinder; 43, back plate; 44, cross rod; 45, fourth servo cylinder; 46, roller; 47, convex plate; 48, second spring. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0034] Embodiment one, please refer to Figures 1-11 A battery diaphragm strength detection device, comprising a placing plate 2 slidingly arranged on a base 1, a liftable adjusting seat 3 arranged above the placing plate 2, a first spreading plate 5 arranged below the adjusting seat 3 and used for spreading a battery diaphragm 4 horizontally, and a liftable cutting knife 6 arranged above the first spreading plate 5.

[0035] A storage groove 7 is formed in the lower surface of the first spreading plate 5, a sliding block 8 is elastically arranged in the storage groove 7, a first sliding rod 9 is fixed to the surface of the sliding block 8, a first inclined groove 10 is formed in the inner wall of the storage groove 7 and used for sliding the first sliding rod 9, and a connecting rod 11 is arranged on the lower surface of the sliding block 8.

[0036] A top plate 13 is slidingly arranged in the storage groove 7, a first spring 14 and a telescopic rod 15 are fixed between the top plate 13 and the sliding block 8, and the first spring 14 is sleeved on the circumference of the telescopic rod 15.

[0037] The lower surface of the adjusting seat 3 is provided with a first sliding groove 16, and a moving seat 17 is slidably arranged in the first sliding groove 16. A transmission column 18 is fixed between the moving seat 17 and the first flattening plate 5. A first servo cylinder 19 is fixed to the surface of the adjusting seat 3, and the output end of the first servo cylinder 19 is fixed to the transmission column 18.

[0038] The end of the placing plate 2 is fixed with a second support frame 40, and the second support frame 40 is fixed with a second servo cylinder 41. The output end of the second servo cylinder 41 is fixed to the adjusting seat 3. A third servo cylinder 42 is fixed to the base 1, and the output end of the third servo cylinder 42 is fixed to the second support frame 40. A back plate 43 is fixed to the surface of the base 1, and a cross bar 44 is fixed to the top of the back plate 43. A fourth servo cylinder 45 is fixed to the surface of the cross bar 44, and the output end of the fourth servo cylinder 45 is fixed to the cutting knife 6.

[0039] In the technical scheme, when the tensile strength of the battery separator 4 is detected, the battery separator 4 sample is placed on the placing plate 2. Then, the adjusting seat 3 is moved downward by the second servo cylinder 41. The adjusting seat 3 drives the first flattening plate 5 to move downward through the transmission column 18, so that the first flattening plate 5 moves to the surface of the middle position of the battery separator 4. Then, the first servo cylinder 19 is retracted to drive the moving seat 17 to slide in the first sliding groove 16, so that the moving seat 17 drives the transmission column 18 to move. The transmission column 18 drives the first flattening plate 5 to move horizontally along the battery separator 4, so that the first flattening plate 5 flattens the battery separator 4 horizontally, thereby reducing the wrinkling of the battery separator 4. After the battery separator 4 is flattened, the cutting knife 6 is moved downward by the fourth servo cylinder 45, so that the cutting knife 6 cuts the edge of the battery separator 4, so that the edge of the battery separator 4 is kept flush, thereby reducing the influence of the uneven cut on the accuracy of the subsequent tensile strength detection. After cutting, the cutting knife 6 is reset, and the two ends of the battery separator 4 are pressed on the placing plate 2 by the first flattening plate 5. Then, the second support frame 40 is pulled by the third servo cylinder 42, and the force is applied to the placing plate 2 and then to the battery separator 4, so that the tensile strength of the battery separator 4 is detected. The detection data is recorded until the battery separator 4 is pulled and broken, and the detection is completed.

[0040] When the first flattening plate 5 just contacts the battery diaphragm 4, the first flattening plate 5 will cover a large range of the battery diaphragm 4 due to the large width of the first flattening plate 5, so the part of the battery diaphragm 4 will be covered by the first flattening plate 5 first, if the part of the battery diaphragm 4 is not flat, it will easily cause indentation, which will affect the subsequent process, therefore, during the movement of the first flattening plate 5 downwards, the second flattening plate 12 first contacts the surface of the battery diaphragm 4, then the first flattening plate 5 continues to move downwards, so that the second flattening plate 12 shrinks into the storage slot 7, due to the restriction of the first inclined slot 10 to the first sliding rod 9, the first sliding rod 9 moves upwards along the first inclined slot 10, at this time, the first sliding rod 9 drives the sliding block 8 to move outward along the second flattening plate 12, so that the second flattening plate 12 first flattens the position contacted by the first flattening plate 5 longitudinally, thereby reducing the possibility of the position contacted by the first flattening plate 5 being not flat, and the second flattening plate 12 with a smaller width first flattens the position contacted by the first flattening plate 5 longitudinally, which reduces the contact area and the possibility of indentation, and the flattening effect is better;

[0041] When the second flattening plate 12 shrinks into the storage slot 7, the sliding block 8 slides along the first inclined slot 10, so that the telescopic rod 15 shrinks and compresses the first spring 14 at the same time, so that the first spring 14 stores energy, which is convenient for the subsequent reset of the sliding block 8, the telescopic rod 15 includes an inner rod and an outer rod which are connected with each other in sliding mode, the inner rod can be shrunk into the outer rod to realize the telescopic function, the top of the top plate 13 is rotatably provided with a roller 46, which can reduce the friction force and facilitate the sliding block 8 to drive the telescopic rod 15 and the top plate 13 to slide in the storage slot 7.

[0042] In the second embodiment, the first embodiment is improved, and the specific improvement is shown in Figures 1-11 The connecting rod 11 is rotatably connected with the sliding block 8, the circumference of the connecting rod 11 is fixedly provided with a gear 20, the outer surface of the adjusting seat 3 is fixedly provided with a first support frame 21, and the bottom end of the first support frame 21 is provided with a toothed plate 22 for engaging with the gear 20.

[0043] The surface of the connecting rod 11 is provided with a slot 23, the slot 23 is inserted with a plug rod 24, the end of the plug rod 24 is fixedly provided with a first limiting ball 25, and the inside of the storage slot 7 is provided with a first track groove 26 for sliding of the first limiting ball 25, the first track groove 26 includes a translation part 261 and an internal moving part 262 which are connected.

[0044] In the technical solution, when the second flattening plate 12 is completely received in the receiving groove 7, the second flattening plate 12 is moved to the two ends of the first flattening plate 5, the gear 20 is engaged with the toothed plate 22, and then when the first flattening plate 5 flattens the battery diaphragm 4 laterally, the second flattening plate 12 is driven to move synchronously, the gear 20 moves along the toothed plate 22, the connecting rod 11 is driven to rotate by the gear 20, the second flattening plate 12 is driven to rotate by the connecting rod 11, and the edge of the battery diaphragm 4 is flattened outward before the first flattening plate 5 flattens the battery diaphragm 4 laterally, so that the unevenness is reduced, and the flattening effect is improved.

[0045] In the technical solution, in the process that the second flattening plate 12 is received in the receiving groove 7, in order to avoid the rotation of the connecting rod 11, the connecting rod 11 is limited by inserting the insertion rod 24 into the insertion slot 23, so that the connecting rod 11 does not deflect during the process that the second flattening plate 12 is received in the receiving groove 7, and meanwhile the insertion rod 24 drives the first limiting ball 25 to slide along the first track slot 26, when the first limiting ball 25 slides along the translation part 261 to the inward moving part 262 and slides along the inward moving part 262, the first limiting ball 25 drives the insertion rod 24 to move, so that the insertion rod 24 moves out of the insertion slot 23, and the limitation on the connecting rod 11 is released, and then the gear 20 is engaged with the toothed plate 22, so that the gear 20 can drive the connecting rod 11 to rotate subsequently.

[0046] In the technical solution, the insertion rod 24 only moves out of the insertion slot 23, and does not move out of the sliding block 8, the insertion rod 24 cooperates with the first sliding rod 9 to limit the sliding block 8, so that the sliding block 8 can move stably in the receiving groove 7, in addition, the two sides of the bottom of the first flattening plate 5 have a height difference, as shown in Figure 7 The bottom of the b side of the first flattening plate 5 is higher than the bottom of the a side, so that only the bottom of the b side of the first flattening plate 5 contacts the battery diaphragm 4 and performs the lateral flattening work, so as to avoid the influence of the first flattening plate 5 on the outward flattening work of the second flattening plate 12 on the battery diaphragm 4, and the contact area of the first flattening plate 5 and the battery diaphragm 4 is reduced, and the flattening effect is further improved.

[0047] In the third embodiment, when the second flattening plate 12 rotates, the second flattening plate 12 rotates from the inner side to the outer edge of the battery diaphragm 4, and has the flattening effect, but when the second flattening plate 12 rotates from the outer edge to the inner side of the battery diaphragm 4, the second flattening plate 12 rubs against the battery diaphragm 4, so that the battery diaphragm 4 is uneven, and the flattening effect is reduced, and in order to solve the problem, the embodiment is improved on the basis of the second embodiment, and details are described in the Figures 1-11The circular ring 27 is sleeved and slid on the circumference of the connecting rod 11, the positioning rod 28 is fixed between the circular ring 27 and the sliding block 8, the second spreading plate 12 comprises a first plate 121 and a second plate 122, the square rod 29 is fixed on the top of the first plate 121 and the second plate 122 and is slid and inserted into the bottom of the connecting rod 11, the second sliding rod 30 is fixed on the top of the first plate 121 and the second plate 122, and the annular groove 31 is formed in the lower surface of the circular ring 27 and used for sliding the second sliding rod 30.

[0048] The second limiting ball 32 is fixed on the end of the second sliding rod 30, the second track groove 33 is formed in the inner wall of the annular groove 31 and used for sliding the second limiting ball 32, and the second track groove 33 comprises the horizontal part 331, the rising part 332 and the falling part 333 which are communicated.

[0049] In the technical scheme, the second spreading plate 12 is divided into the first plate 121 and the second plate 122, first, the first plate 121 and the second plate 122 are parallel to the edge of the battery diaphragm 4, when the second spreading plate 12 rotates, the connecting rod 11 drives the first plate 121 and the second plate 122 to rotate, the first plate 121 and the second plate 122 drive the second sliding rod 30 to slide along the annular groove 31, the second sliding rod 30 drives the second limiting ball 32 to slide along the second track groove 33, when the first plate 121 rotates from the inner side to the outer edge of the battery diaphragm 4, the first plate 121 drives the second limiting ball 32 to slide along the horizontal part 331, the first plate 121 keeps in contact with the battery diaphragm 4 and spreads the battery diaphragm 4 outward, meanwhile, the second plate 122 rotates from the outer edge to the inner side of the battery diaphragm 4, the second plate 122 drives the second limiting ball 32 to slide along the rising part 332, the second limiting ball 32 drives the second plate 122 to move upward through the second sliding rod 30, lifts the second plate 122 and makes the second plate 122 not in contact with the battery diaphragm 4, thereby avoiding the friction between the second plate 122 and the battery diaphragm 4 when the second plate 122 rotates from the outer edge to the inner side of the battery diaphragm 4, and causing the battery diaphragm 4 to be uneven, then the second limiting ball 32 slides along the falling part 333 and makes the second plate 122 move downward until the second plate 122 rotates to the position from the inner side to the outer edge of the battery diaphragm 4 (i.e. the position that the second plate 122 is perpendicular to the edge of the battery diaphragm 4), so that the second plate 122 is in contact with the battery diaphragm 4 and continues to spread the battery diaphragm 4; through the above process, when the first plate 121 or the second plate 122 needs to rotate from the outer edge to the inner side of the battery diaphragm 4 each time, the first plate 121 or the second plate 122 drives the second limiting ball 32 to slide along the rising part 332 and the falling part 333, so that the first plate 121 or the second plate 122 will lift first and then drop, thereby avoiding the friction between the first plate 121 or the second plate 122 and the battery diaphragm 4 when the first plate 121 or the second plate 122 rotates from the outer edge to the inner side of the battery diaphragm 4, and causing the battery diaphragm 4 to be uneven.

[0050] In order to increase the flattening effect, the first flattening plate 5 needs to cover the width of the battery diaphragm 4 at least completely, so as to reduce the dead angle of flattening, and thus the first flattening plate 5 will shield the edge of the battery diaphragm 4 after the battery diaphragm 4 is flattened by the first flattening plate 5, thereby hindering the cutting work of the cutting knife 6 on the edge of the battery diaphragm 4. In order to solve the above problem, the embodiment is improved on the basis of the third embodiment, and details are shown in Figures 1-11 The first flattening plate 5 comprises a fixed part 501 and a rotating part 502, the rotating part 502 is rotationally connected with the fixed part 501, the surface of the fixed part 501 is fixed with a servo motor 34, the output end of the servo motor 34 is fixed with the rotating part 502, and the rotating part 502 is provided with a slot 35 for inserting the toothed plate 22.

[0051] The inside of the first support frame 21 is elastically provided with a transmission rod 36, the end of the transmission rod 36 is fixed with a contact block 37, the surface of the moving seat 17 is fixed with a contact rod 38, the first support frame 21 is provided with a second sliding groove 39, and the toothed plate 22 slides in the second sliding groove 39 through the contact of the contact rod 38 and the contact block 37.

[0052] In the technical solution, when the first flattening plate 5 moves transversely to the two ends of the battery diaphragm 4, as shown in Figure 10 , the moving seat 17 drives the contact rod 38 to move along the first sliding groove 16 to the leftmost end, at this time, the contact rod 38 contacts with the contact block 37, so as to drive the contact block 37 to move downward, the contact block 37 drives the toothed plate 22 to slide downward along the second sliding groove 39 through the transmission rod 36, at this time, the toothed plate 22 is disengaged from the gear 20 (in Figure 2 , the toothed plate 22 moves outward along the second sliding groove 39, so as to disengage the toothed plate 22 from the gear 20), and then the servo motor 34 drives the rotating part 502 to rotate, so that the rotating part 502 and the fixed part 501 move to the state as shown in Figure 11 , at this time, the outer edge of the battery diaphragm 4 is exposed, so as not to affect the cutting of the edge of the battery diaphragm 4 by the cutting knife 6, and the cutting position is the dashed line part in Figure 11 , in addition, the edge of the battery diaphragm 4 can be flattened during the rotation of the rotating part 502 to the state as shown in Figure 11 , so as to further improve the flattening effect.

[0053] In the technical solution, the surface of the transmission rod 36 is fixed with a convex plate 47, the second spring 48 is fixed between the convex plate 47 and the inner wall of the first support frame 21, the transmission rod 36 drives the convex plate 47 to move when the transmission rod 36 moves, the convex plate 47 compresses the second spring 48, so as to store the power of the second spring 48 for the subsequent reset of the transmission rod 36.

[0054] It is to be noted that, in the present text, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0055] The above description is merely preferred embodiments of the present application, and it should be pointed out that, for those skilled in the art, some improvements and refinements can be made without departing from the technical principles of the present application, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A battery separator strength detection apparatus comprising a placement plate (2) slidingly disposed on a base (1), characterized in that: A liftable adjustment seat (3) is provided above the placement plate (2), and a first spreading plate (5) for horizontally spreading the battery separator (4) is provided below the adjustment seat (3). A liftable cutting blade (6) is provided above the first spreading plate (5). The lower surface of the first flat plate (5) is provided with a storage groove (7), and a slider (8) is elastically provided in the storage groove (7). A first sliding rod (9) is fixed on the surface of the slider (8). The inner wall of the storage groove (7) is provided with a first inclined groove (10) for the first sliding rod (9) to slide. A connecting rod (11) is provided on the lower surface of the slider (8). A second flat plate (12) for longitudinally flattening the battery separator (4) is provided at the bottom of the connecting rod (11). During the downward movement of the first flat plate (5), the second flat plate (12) first contacts the surface of the battery separator (4), and then the first flat plate (5) continues to move downward, causing the second flat plate (12) to retract into the storage groove (7) until it is completely stored in the knife storage groove (7). Due to the restriction of the first inclined groove (10) on the first sliding rod (9), the first sliding rod (9) moves upward along the first inclined groove (10). At this time, the first sliding rod (9) drives the slider (8) to move outward along the second flat plate (12), so that the second flat plate (12) first flattens the position where the first flat plate (5) first contacts longitudinally, thereby reducing the unevenness of the position where the first flat plate (5) first contacts.

2. The battery separator strength testing apparatus of claim 1, wherein: A top plate (13) is slidably disposed in the storage slot (7). A first spring (14) and a telescopic rod (15) are fixed between the top plate (13) and the slider (8). The first spring (14) is sleeved on the circumference of the telescopic rod (15).

3. The battery separator strength detection apparatus of claim 2, wherein: The lower surface of the adjusting seat (3) is provided with a first sliding groove (16), and a movable seat (17) is slidably arranged in the first sliding groove (16). A transmission column (18) is fixed between the movable seat (17) and the first flat plate (5). A first servo electric cylinder (19) is fixed on the surface of the adjusting seat (3), and the output end of the first servo electric cylinder (19) is fixed to the transmission column (18).

4. The battery separator strength testing apparatus of claim 3, wherein: The connecting rod (11) is rotatably connected to the slider (8). A gear (20) is fixed on the circumference of the connecting rod (11). A first support frame (21) is fixed on the outer surface of the adjusting seat (3). A toothed plate (22) for meshing with the gear (20) is provided at the bottom end of the first support frame (21).

5. The battery separator strength detection apparatus of claim 4, wherein: The surface of the connecting rod (11) is provided with a slot (23), and a plug rod (24) is inserted into the slot (23). The end of the plug rod (24) is fixed with a first limiting ball (25). The inside of the storage groove (7) is provided with a first trajectory groove (26) for the first limiting ball (25) to slide. The first trajectory groove (26) includes a translation part (261) and an inward part (262) that are connected together.

6. The battery separator strength testing apparatus of claim 5, wherein: A ring (27) is slidably sleeved on the circumference of the connecting rod (11). A positioning rod (28) is fixed between the ring (27) and the slider (8). The second plate (12) includes a first plate (121) and a second plate (122). A square rod (29) is fixed on the top of both the first plate (121) and the second plate (122). The square rod (29) is slidably inserted into the bottom of the connecting rod (11). A second sliding rod (30) is fixed on the top of both the first plate (121) and the second plate (122). An annular groove (31) for the second sliding rod (30) to slide is opened on the lower surface of the ring (27).

7. The battery separator strength testing apparatus of claim 6, wherein: The end of the second slide bar (30) is fixed with a second limiting ball (32), and the inner wall of the annular groove (31) is provided with a second track groove (33) for the second limiting ball (32) to slide. The second track groove (33) includes a horizontal part (331), a rising part (332) and a falling part (333) connected together.

8. The battery separator strength testing device according to claim 7, characterized in that: The first flat plate (5) includes a fixed part (501) and a rotating part (502). The rotating part (502) is rotatably connected to the fixed part (501). A servo motor (34) is fixed on the surface of the fixed part (501). The output end of the servo motor (34) is fixed to the rotating part (502). A notch (35) is provided on the rotating part (502) for the toothed plate (22) to be inserted.

9. The battery separator strength testing device according to claim 8, characterized in that: The first support frame (21) is elastically provided with a transmission rod (36), and an abutment block (37) is fixed at the end of the transmission rod (36). An abutment rod (38) is fixed on the surface of the movable seat (17). A second sliding groove (39) is provided on the first support frame (21). The toothed plate (22) slides inside the second sliding groove (39) by abutting against the abutment block (37) through the abutment rod (38).

10. The battery separator strength testing device according to claim 9, characterized in that: A second support frame (40) is fixed to the end of the placement plate (2). A second servo cylinder (41) is fixed on the second support frame (40). The output end of the second servo cylinder (41) is fixed to the adjustment seat (3). A third servo cylinder (42) is fixed on the base (1). The output end of the third servo cylinder (42) is fixed to the second support frame (40). A back plate (43) is fixed to the surface of the base (1). A crossbar (44) is fixed to the top of the back plate (43). A fourth servo cylinder (45) is fixed to the surface of the crossbar (44). The output end of the fourth servo cylinder (45) is fixed to the cutting blade (6).

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