Briquetting clamp for battery core lamination and lamination equipment

Abstract

The utility model discloses a pressing block clamp for a battery stack core, which is used for carrying out rubberizing and insulation testing on the battery stack core and comprises an upper pressing block and a lower pressing block which are oppositely arranged along the vertical direction, the opposite sides of the upper pressing block and the lower pressing block protrude and are provided with a plurality of first clamping parts and second clamping parts at intervals, the first clamping parts and the second clamping parts are used for clamping the battery stack core, a first rubberizing gap is formed between every two adjacent first clamping parts, and a second rubberizing gap is formed between every two adjacent second clamping parts; the pressing block clamp further comprises a probe, the probe is arranged at the end of the upper pressing block and extends towards the lower pressing block in the vertical direction, and the extending tail end of the probe abuts against the electrode lug of the clamped battery stack core and detects the insulation resistance value of the electrode lug. The briquetting clamp disclosed by the utility model has the function of detecting the insulation resistance value before rubberizing so as to ensure that the insulation resistance value meets the requirements. Problems in production can be found and solved as early as possible, so that defective products are reduced, and the overall quality of final products is improved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of lithium battery production. More particularly, the present disclosure relates to a battery core pressing clamp. Further, the present disclosure also provides a laminating device. BACKGROUND

[0002] Before the lithium battery is shipped, in order to guarantee the safety and performance of the battery, the insulation performance and internal resistance of the battery core need to be detected. In the traditional short circuit test method of lithium battery, the insulation resistance test is usually carried out at the welding station of lithium battery production and is completed before the final welding step. However, it is not convenient to timely adjust and handle the abnormality when detecting the insulation performance of the battery core at this node, which will lead to the reduction of product yield and quality.

[0003] Therefore, it is urgent to provide a battery core pressing clamp and a laminating device to timely monitor the short circuit condition inside the battery core and make adjustment, thereby improving the quality and efficiency of lithium battery production. SUMMARY

[0004] In order to at least solve one or more technical problems as mentioned above, the present disclosure provides a battery core pressing clamp and a laminating device which can improve the quality and efficiency of lithium battery production.

[0005] In a first aspect, the present disclosure provides a battery core pressing clamp for gluing and insulation testing of a battery core, comprising an upper pressing block and a lower pressing block oppositely arranged in a vertical direction, and a first clamping portion and a second clamping portion for clamping the battery core are respectively protruded and spaced apart on one side of the upper pressing block and the lower pressing block, a first gluing gap is provided between two adjacent first clamping portions, a second gluing gap is provided between two adjacent second clamping portions, and the first gluing gap and the second gluing gap correspond to each other in the vertical direction; the pressing clamp further comprises a probe arranged at the end of the upper pressing block and extending towards the lower pressing block in the vertical direction, the extending end of the probe abuts against the tab of the clamped battery core and detects the insulation resistance of the tab.

[0006] In some embodiments, the lower pressing block has a support portion corresponding to the probe, the support portion is arranged at the end of the lower pressing block and extends towards the upper pressing block, and the support portion is used to carry the tab.

[0007] In some embodiments, the probe is adjustably mounted on the upper pressing block in the vertical direction, the probe comprises a first extension section and a second extension section connected to each other, the first extension section and the second extension section are arranged on two sides of the upper pressing block in the vertical direction, and the lengths of the first extension section and the second extension section in the vertical direction are adjustable.

[0008] In some embodiments, the probes are arranged at at least one end of the upper press block in the length direction, and at least one probe is arranged at the end, and when two probes are arranged at the end, N through holes are arranged at the end along the width direction of the upper press block, and the two probes are arranged in any two through holes, where N is a positive integer not less than 2.

[0009] In some embodiments, the upper press block comprises an upper press plate, a plurality of the first clamping portions are protrusively arranged on the lower surface of the upper press plate along the circumferential direction of the upper press plate, and the plurality of the first clamping portions form a containing space in which the battery core stack is accommodated; the lower press block comprises a lower press plate, a plurality of the second clamping portions are protrusively arranged on the upper surface of the lower press plate, and the upper surfaces of the plurality of the second clamping portions are flush and form a first support surface to support the battery core stack.

[0010] In some embodiments, the support portions are protrusively arranged on the upper surface of the lower press plate, the upper surfaces of the support portions form a second support surface, and the second support surface is flush with the first support surface or protrudes from the first support surface along the vertical direction and towards the upper press plate.

[0011] In some embodiments, the end of the upper press plate is provided with a mounting portion, and the probe is mounted on the mounting portion, wherein the mounting portion is integrally formed with the upper press plate or detachably connected with the upper press plate.

[0012] In some embodiments, further comprising a rubberizing tool arranged on one side of the upper press block in the length direction or the width direction, the rubberizing tool comprising a plurality of support arms, at least two of the support arms are oppositely arranged along the vertical direction, and the two support arms are used to clamp rubberizing and are movable along the length direction or the width direction of the upper press block to respectively extend into or out of the first rubberizing gap and the second rubberizing gap.

[0013] In some embodiments, the outer edge of at least one of the first clamping portions of the upper press block and the second clamping portions of the lower press block has a guide block arranged along the vertical direction to extend towards the other, and the guide block is configured to gather the battery core stack towards the center of the upper press block in the length direction and / or the width direction of the upper press block.

[0014] In a second aspect, the disclosure also provides a laminating device comprising a battery core stack and the above-mentioned press block clamp, the battery core stack is placed on the press block clamp, the press block clamp clamps the battery core stack and is used for rubberizing and insulation testing of the battery core stack.

[0015] By means of the pressing block clamp for battery core stack as provided above, the present disclosure can detect the insulation resistance of the battery core stack by installing a probe at the end of the upper pressing block, when the upper pressing block and the lower pressing block are closed to hold and position the battery core stack, the probe and the support part also press the tab on the battery core stack, when the pressing is in place, the probe detects the insulation resistance of the battery core stack. If the insulation resistance is detected to be abnormal in this step, the short-circuit area can be repaired or isolated by adjusting the pressing block clamp and the like. This scheme helps to discover and solve the problems in the production process in time, reduces the generation of defective products, and thus improves the quality of the final product. Further, in some embodiments, by adjusting the length of the first extension section and the second extension section, the detection of battery core stacks of different thicknesses can be applied, thereby expanding the application range of the pressing block clamp. Further, in some embodiments, by being provided with N through holes along the width direction of the upper pressing block, two probes are arranged in any two through holes, this scheme can be applied to the case where the interval between the tabs is different, further expanding the application range of the pressing block clamp. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and other objects, features and advantages of the exemplary embodiments of the present disclosure will be more apparent from the following detailed description read in conjunction with the accompanying drawings, in which several embodiments of the present disclosure are shown by way of example, and wherein the same reference numerals refer to the same or similar components throughout the several views. In the drawings:

[0017] Figure 1 A schematic view of a pressing block clamp holding a battery core stack and a taping tool according to an embodiment of the present disclosure is shown;

[0018] Figure 2 A schematic view of a pressing block clamp according to an embodiment of the present disclosure is shown;

[0019] Figure 3 A schematic view of another perspective of a pressing block clamp according to an embodiment of the present disclosure is shown.

[0020] In the drawings: 100, pressing block clamp; 200, battery core stack; 300, taping tool;

[0021] 101, upper pressing block; 102, lower pressing block; 103, first clamping part; 103-1, second clamping part; 104, first taping gap; 104-1, second taping gap; 105, probe; 106, support part; 107, upper pressing plate; 108, lower pressing plate; 109, mounting part; 110, guide block;

[0022] 1051, first extension section; 1052, second extension section; 1053, probe head;

[0023] 1091, fixing part; 1092, mounting part;

[0024] 201 tab;

[0025] 301 end wall, 302 first support arm; 303 second support arm; 304 third support arm. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present disclosure will be described clearly and completely in combination with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present disclosure.

[0027] It should be understood that the terms "comprise" and "include" used in the specification and claims of the present disclosure indicate the presence of the described features, integers, steps, operations, elements, and / or components, but do not exclude one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0028] It should also be understood that the terms used in the specification of the present disclosure are only for the purpose of describing specific embodiments, and are not intended to limit the present disclosure. As used in the specification and claims of the present disclosure, the singular forms "a", "an" and "the" are intended to include the plural forms, unless the context clearly indicates otherwise. It should be further understood that the term "and / or" used in the specification and claims of the present disclosure means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0029] As used in the specification and claims of this document, the term "if' can be interpreted as meaning "when" or "once" or "in response to determining" or "in response to detecting" depending on the context. Similarly, the phrases "if it is determined" or "if [the described condition or event] is detected" can be interpreted to mean "once it is determined" or "in response to determining" or "once [the described condition or event] is detected" or "in response to detecting [the described condition or event]" depending on the context.

[0030] The specific embodiments of the present disclosure will be described in detail below in combination with the accompanying drawings.

[0031] As Figure 1As shown, the battery core 200 pressing clamp 100 for the battery core gluing and insulation test comprises an upper pressing block 101 and a lower pressing block 102 oppositely arranged in the vertical direction, and the side of the upper pressing block 101 and the lower pressing block 102 oppositely arranged is respectively protruded and spaced with a plurality of first clamping portions 103 and second clamping portions 103-1 for clamping the battery core 200, the first clamping portions 103 between two adjacent first clamping portions 103 have a first gluing gap 104, the second clamping portions 103-1 between two adjacent second clamping portions have a second gluing gap 104-1, and the first gluing gap 104 and the second gluing gap 104-1 are arranged one by one in the vertical direction. The battery core 200 pressing clamp 100 further comprises a probe 105 arranged at the end of the upper pressing block 101 and extending towards the lower pressing block 102 in the vertical direction, the extending end of the probe 105 abuts against the tab 201 on the clamped battery core 200 and detects the insulation resistance of the tab 201.

[0032] In a specific embodiment, the battery core 200 pressing clamp 100 comprises an upper pressing block 101 and a lower pressing block 102, the upper pressing block 101 has a plurality of first clamping portions 103 arranged at intervals for clamping the battery core 200, the lower pressing block 102 has a plurality of second clamping portions 103-1 arranged at intervals for clamping the battery core 200, and the first clamping portions 103 and the second clamping portions 103-1 are oppositely arranged. It is worth noting that the interval between the adjacent first clamping portions 103 on the upper pressing block 101 constitutes the first gluing gap 104, the interval between the adjacent second clamping portions 103-1 on the lower pressing block 102 constitutes the second gluing gap 104-1, and when the upper pressing block 101 and the lower pressing block 102 are in the assembled position, the first gluing gap 104 on the upper pressing block 101 and the second gluing gap 104-1 on the lower pressing block 102 are arranged one by one in the vertical direction.

[0033] In use, the prepared battery core 200 is placed on the second clamping portion 103-1 of the lower pressing block 102 through the synchronous belt unloading, and then the upper pressing block 101 and the lower pressing block 102 are folded towards each other to position and hold the battery core 200. When the upper pressing block 101 and the lower pressing block 102 are folded into position, the first gluing gap 104 on the upper pressing block 101 and the second gluing gap 104-1 on the lower pressing block 102 are arranged one by one. That is, the battery core 200 at the first gluing gap 104 and the second gluing gap 104-1 is exposed, and then the exposed battery core 200 is glued and fixed by using the gluing tool 300, thereby preventing the displacement of the pole piece on the battery core 200 in the subsequent processing steps.

[0034] In addition, the briquet clamp 100 provided by the scheme further comprises a probe 105. The probe 105 is arranged at the end of the upper briquet 101 and extends downward to the lower briquet 102 in the vertical direction. The extended end of the probe 105 abuts against the tab 201 of the clamped battery core stack 200 and detects the insulation resistance of the tab 201.

[0035] The arrangement position and the number of the probe in the scheme correspond to the arrangement position and the number of the tab 201 on the battery core stack 200 one by one. For example, when the battery core stack 200 is provided with only one tab 201 in the length direction, the end of the upper briquet 101 in the length direction is also provided with one probe 105. When the battery core stack 200 is provided with only one tab 201 in the width direction, the end of the upper briquet 101 in the width direction is also provided with one probe 105. That is, when one probe 105 is arranged, the probe 105 can be arranged at any end of the upper briquet 101, and when multiple probes 105 are arranged, the multiple probes 105 can be arranged at one end at the same time or at different ends. For the convenience of description, the following scheme will be exemplarily described by taking the case that the battery core stack 200 is provided with two tabs 201 at the end in the length direction, and the upper briquet 101 is provided with two probes 105 in the length direction.

[0036] Specifically, the battery core stack 200 is provided with two tabs 201 at one end in the length direction, and the two tabs 201 are arranged in the width direction of the battery core stack 200. Correspondingly, in the scheme, two probes 105 are arranged at one end of the upper briquet 101 in the length direction, and the two probes 105 are also arranged in the width direction of the upper briquet 101. In addition, the probe 105 in the scheme has a preset extension length, and one end thereof extends in the direction of the lower briquet 102, abuts against the tab 201 and detects the insulation resistance of the tab 201.

[0037] In use, when the upper briquet 101 and the lower briquet 102 are folded to each other and position the battery core stack 200, the probe 105 abuts against the upper surface of the tab 201, and then detects the insulation resistance of the battery core stack 200. If the insulation resistance is detected to be abnormal in this step, the cause of the abnormal insulation resistance can be found by confirming the test conditions, checking the clamp and the contact point, and checking whether the battery core has physical damage, pollution and the like, and then the short-circuit area is repaired or isolated by the corresponding scheme. The scheme is helpful to find and solve the problems in the production process in time, reduces the generation of defective products, and thus improves the quality of the final product.

[0038] In one specific embodiment, the lower pressing block 102 has a support portion 106 corresponding to the probe 105, which is arranged at the end of the lower pressing block 102 and extends towards the upper pressing block 101, and is used to carry the tab 201.

[0039] In this solution, the lower pressing block 102 has a support portion 106 corresponding to the probe 105. Specifically, the probe 105 is arranged at one end of the upper pressing block 101 in the length direction and extends towards the upper pressing block 101, and is used to carry the tab 201. That is, the probe 105 in this solution abuts the upper surface of the tab 201, and the support portion 106 abuts the lower surface of the tab 201, and the probe 105 and the support portion 106 jointly clamp the tab 201 therebetween.

[0040] In use, when the upper pressing block 101 and the lower pressing block 102 are folded towards each other and press and position the battery core 200, the probe 105 and the support portion 106 also press and position the tab 201 on the battery core 200, and then fix the tab 201 between the probe 105 and the support portion 106. The probe 105 abuts the upper surface of the tab 201, and then detects the insulation resistance of the battery core 200.

[0041] Of course, those skilled in the art can understand that the arrangement position and number of the tab 201 on the battery core 200 can be arranged according to the specific use requirements, and the arrangement position and number of the probe 105 can be designed according to the position of the tab 201. Similarly, the arrangement position and number of the support portion 106 can also be designed according to the arrangement position of the probe 105. For example, when the battery core 200 has one tab 201 arranged at each end in the length direction, the upper pressing block 101 has one probe 105 arranged at each end in the length direction, and the lower pressing block 102 has one support portion 106 arranged at each end in the length direction.

[0042] In one specific embodiment, the pressing block clamp further comprises a rubberizing tool 300 arranged on one side of the upper pressing block 101 in the length direction or the width direction, the rubberizing tool 300 comprising a plurality of support arms, at least two of the support arms being arranged opposite to each other in the vertical direction, and the two support arms being used to clamp rubberizing and being movable in the length direction or the width direction of the upper pressing block 101 to respectively extend into or out of the first rubberizing gap 104 and the second rubberizing gap 104-1.

[0043] In this design, the pressing clamp 100 also includes an adhesive applicator 300, which can be placed either along the length or the width of the pressing clamp 100. The adhesive applicator 300 includes an end wall 301, and a first support arm 302, a second support arm 303, and a third support arm 304, each connected to the end wall 301 at one end and spaced apart. The first support arm 302 and the third support arm 304 are of the same length and are longer than the second support arm 303. Adhesive tape is fixed to the other end of the first support arm 302 and the third support arm 304, away from the end wall 301.

[0044] In use, after the two upper pressure blocks 101 and the lower pressure block 102 clamp the battery stack 200 between them, the adhesive application tool 300 is aligned with the first adhesive application gap 104 and the second adhesive application gap 104-1, and moves along the length or width direction of the pressure block clamp 100 to perform the adhesive application operation.

[0045] It is worth noting that the width of the end wall 301 and the widths of the first support arm 302, the second support arm 303, and the third support arm 304 are smaller than the widths of the first adhesive gap 104 and the second adhesive gap 104-1. This ensures that during use, the adhesive tool 300 is aligned with the adhesive gap, the tape is adhered to the side wall of the battery stack 200 and then cut. Since the first support arm 302 and the third support arm 304 are arranged opposite each other along the vertical direction, the lower surface of the first support arm 302 presses the tape onto the upper surface of the battery stack 200, and the upper surface of the third support arm 304 presses the tape onto the lower surface of the battery stack 200, thus completing the adhesive application.

[0046] like Figure 1 As shown, in some embodiments, the probe 105 is adjustablely mounted on the upper pressure block 101 along the vertical direction. The probe 105 includes a first extension 1051 and a second extension 1052 connected to each other. The first extension 1051 and the second extension 1052 are respectively disposed on both sides of the upper pressure block 101 along the vertical direction, and their lengths along the vertical direction are adjustable.

[0047] In one specific embodiment, the upper pressing block 101 has a through hole extending along the vertical direction, and the inner surface of the through hole is provided with an internal thread. The outer periphery of the region of the probe 105 above the middle is provided with an external thread. The probe 105 is inserted into the through hole and threadedly connected with the through hole (not shown in the figure). It can be understood that in other embodiments, the probe 105 can also adaptively adjust the extension lengths of the first extension section 1051 and the second extension section 1052 according to the thickness of the battery core stack 200 and the thickness of the tab 201. For example, the probe 105 is connected to the output end of a driving member. The driving member can receive a size signal or a limit signal of the battery core stack 200, and adjust the extension length of the second extension section 1052 on the probe 105 according to the signals, so as to adapt to battery core stacks 200 and tabs 201 of different thicknesses.

[0048] In the present solution, the probe 105 comprises a first extension section 1051 and a second extension section 1052 connected with each other. The first extension section 1051 is arranged between the upper pressing block 101 and the lower pressing block 102, and the end of the first extension section 1051 abuts against the tab 201. The second extension section 1052 is arranged above the upper pressing block 101 and extends away from the upper pressing block 101. In use, rotating the probe 105 can change the proportion of the first extension section 1051 and the second extension section 1052 in the total length of the probe 105, so as to adjust their respective lengths. Such a design allows the probe 105 to flexibly adapt to tabs 201 of different thicknesses according to actual needs, thereby improving the application range of the pressing block clamp 100.

[0049] In another specific embodiment, two nuts threadedly connected with the probe 105 are arranged on the upper surface and the lower surface of the upper pressing block 101, respectively, so as to prevent the probe 105 from continuing to rotate the first extension section 1051 to extend the extension length of the first extension section 1051 due to other reasons when the first extension section 1051 reaches the preset length requirement.

[0050] In some embodiments, the probe 105 is arranged at at least one end of the upper pressing block 101 in the length direction, and at least one probe 105 is arranged at the end. When two probes 105 are arranged at the end, the end is spaced apart from the upper pressing block 101 in the width direction by N through holes, and the two probes 105 are arranged in any two through holes, where N is a positive integer not less than 2.

[0051] In the above scheme, it has been introduced that the number and position of the probe 105 are set according to the corresponding setting of the lug 201, and the setting position and number of the lug 201 are set according to different battery products. That is, the probe 105 in the present scheme can be set to one or multiple. When multiple probes are set, the multiple probes can be set on the same side of the upper pressing block 101 or on different sides of the upper pressing block 101.

[0052] When the pressing block clamp 100 is provided with two probes 105 on the length direction end, N through holes are provided at one end of the length direction of the upper pressing block 101, wherein the N through holes are arranged along the width direction of the upper pressing block 101. In use, the two probes 105 are set in the two through holes according to the distance between the two lugs 201. That is, the present scheme aims to adapt to the change of the distance between the lugs 201 on the different battery core stacks 200, and ensure that the probe 105 is aligned with the lug 201 in the vertical direction. For this purpose, a plurality of through holes are designed and provided on the upper pressing block 101, and these holes are arranged at equal intervals along the width direction of the upper pressing block 101. In actual use, according to the specific position of the lug 201, the through hole at the corresponding position is selected to install the probe 105. In this way, the probe 105 can be aligned with the lug 201, and accurate detection of the lug 201 can be realized. The present scheme further improves the application range of the pressing block clamp 100.

[0053] It is worth noting that N in the present scheme is a positive integer not less than 2, and the number of through holes is set according to the specific use requirement. For example, N can be 3, 4 or 5, etc.

[0054] In some embodiments, the end of the probe 105 is provided with a probe head 1053 abutting against the lug 201; the probe head 1053 is a cylindrical structure, and the surface area of the end of the probe head 1053 is greater than the surface area of the end of the probe 105.

[0055] In the above scheme, the probe 105 is a cylindrical structure with a preset extension length. In the common sense of those skilled in the art, when the upper pressing block 101 and the lower pressing block 102 are folded, the probe 105 and the support part 106 will exert pressure on the lug 201. Since the probe 105 is thin, it may leave a pressure mark or cause damage on the lug 201 when it contacts the lug 201. In order to avoid this situation, the end of the probe 105 is equipped with a cylindrical probe head 1053, the central axis of the probe head 1053 coincides with the central axis of the probe 105, and the cross section of the probe head 1053 is larger than the cross section of the probe 105. In actual operation, the probe 105 contacts the surface of the lug 201 through the probe head 1053 at the end thereof, so that due to the large surface area of the probe head 1053, the contact area with the lug 201 is increased, and the possibility of damage is reduced.

[0056] In some embodiments, the upper pressure block 101 includes an upper pressure plate 107, and a plurality of first clamping portions 103 are circumferentially protruding from the lower surface of the upper pressure plate 107, and the plurality of first clamping portions 103 form a receiving space, in which the battery stack 200 is received; the lower pressure block 102 includes a lower pressure plate 108, and a plurality of second clamping portions 103-1 are protruding from the upper surface of the lower pressure plate 108, and the upper surfaces of the plurality of second clamping portions 103-1 are flush and form a first support surface to support the battery stack 200.

[0057] like Figure 2 and Figure 3 As shown, in this design, the upper pressure block 101 includes an upper pressure plate 107, which is a cuboid with a preset thickness. Multiple first clamping portions 103 protrude circumferentially from the lower surface of the upper pressure plate 107, forming a receiving space for the battery stack 200. Furthermore, the upper pressure plate 107 in this design has a through hole at its end, and a probe 105 is installed in the through hole.

[0058] The pressing block 102 includes a pressing plate 108, which is also a cuboid with a preset thickness. The upper surface of the pressing plate 108 has a plurality of protruding second clamping portions 103-1. The upper surfaces of the plurality of second clamping portions 103-1 are flush and form a first support surface to support the battery stack 200. Specifically, the second clamping portions 103-1 on the pressing block 102 extend along the width direction of the pressing plate 108 and are disposed on the upper surface of the pressing plate 108, and the plurality of second clamping portions 103-1 are spaced apart in the length direction.

[0059] Those skilled in the art will understand that the arrangement of the first clamping portion 103 on the upper pressure block 101 and the second clamping portion 103-1 on the lower pressure block 102 can be adjusted according to specific needs. For example, the first clamping portion 103 and the second clamping portion 103-1 can be arranged symmetrically. They can be protruding from the outer edge of the lower surface of the upper pressure plate 107 and the outer edge of the upper surface of the lower pressure plate 108, or they can extend along the width direction of the clamping block fixture to the upper surface of the lower pressure plate 108 and the lower surface of the upper pressure plate 107. As another example, the first clamping portion 103 and the second clamping portion 103-1 can be arranged asymmetrically. Several second clamping portions 103-1 protrude from the outer edge of the inner surface of the lower pressure plate 108 and extend towards the upper pressure plate 107. Several first clamping portions 103 extend along the width direction of the upper pressure plate 107 to the lower surface of the upper pressure plate 107, and the several first clamping portions 103 are spaced apart in the length direction.

[0060] In some embodiments, the support portion 106 is protruded on the upper surface of the lower pressing plate 108, and the upper surface of the support portion 106 forms a second support surface which is flush with the first support surface or protruded from the first support surface along the vertical direction and towards the upper pressing plate.

[0061] In the present solution, the support portion 106 in the present solution is two cuboids which are spaced apart on the upper surface of the lower pressing plate 108, and the cuboids have a preset height. The lower surfaces of the two cuboids are in abutment with and fixed to the lower pressing plate 108, and the upper surfaces of the two cuboids form the second support surface which is in abutment with the tab 201, and the second support surface is flush with the first support surface on the second clamping portion 103-1. That is, in the present solution, the protrusion height of the support portion 106 is the same as the protrusion height of the second clamping portion 103-1.

[0062] Those skilled in the art can understand that, in other embodiments, the protrusion height of the support portion 106 can also be higher than the protrusion height of the second clamping portion 103-1. That is, the second support surface is protruded from the first support surface along the vertical direction, which facilitates supporting the tab 201 of the battery core stack 200 at the middle position in the thickness direction thereof.

[0063] Those skilled in the art can also understand that the support portion 106 can be arranged in the form of two square structures which are spaced apart on the upper surface of the lower pressing plate 108 as described above, and the two support portions 106 are arranged in correspondence with the positions of the tab 201 and the probe 105. Alternatively, only one support portion 106 can be arranged, which extends along the width direction of the lower pressing plate 108 to form a larger square structure. Such a design makes the upper surface area of the support portion 106 larger, which can provide stable support force for the tabs 201 with different pitches.

[0064] In some embodiments, the end portion of the upper pressing plate 107 is provided with a mounting portion 109, and the probe 105 is mounted on the mounting portion 109, wherein the mounting portion 109 is integrally formed with the upper pressing plate 107 or detachably connected with the upper pressing plate 107.

[0065] In the above solution, the length of the lower pressing plate 108 is greater than the length of the upper pressing plate 107, and the mounting portion 109 is protruded along the length direction at the end portion of the upper pressing plate 107, and the mounting portion 109 is arranged opposite to the support portion 106 on the lower pressing plate 108. That is, in the present solution, the length of the upper pressing plate 107 on which the mounting portion 109 is mounted is the same as the length of the lower pressing plate 108. In addition, the mounting portion 109 is provided with a through hole in the present solution, and the probe 105 is fixed in the through hole. That is, the probe 105 is fixed on the upper pressing plate 107 through the mounting portion 109.

[0066] It is worth noting that the mounting part 109 in this solution can be either integrally formed with the upper pressure plate 107 or detachably connected to the upper pressure plate 107. When the mounting part 109 and the upper pressure plate 107 are integrally formed, an extension section is provided at one end of the upper pressure plate 107, and this extension section is the mounting part 109. When the mounting part 109 and the upper pressure plate 107 are detachably connected, the mounting part 109 is an independent component, which is mounted on the upper surface of the upper pressure plate 107 by fasteners such as screws 1091.

[0067] Of course, those skilled in the art will understand that both the upper pressure plate 107 and the lower pressure plate 108 are equipped with mounting parts 109, which are designed to be the same length. This is to ensure that the entire pressure block clamp 100 presents a cuboid shape in appearance, so as to achieve a more harmonious appearance. However, this solution does not set specific limitations on the length of the two parts, so in the actual manufacturing process, their lengths can be flexibly adjusted according to actual needs.

[0068] In some embodiments, the mounting portion 109 includes a fastener 1091 and a plate-shaped mounting member 1092, the fastener 1091 being mounted on the upper surface of the upper pressure plate 107, and the probe 105 being mounted on the mounting member 1092.

[0069] like Figure 3 As shown, in the above solution, the mounting part 109 and the upper pressure plate 107 are detachably connected. Specifically, the mounting part 109 includes an integrally formed plate-shaped fixing member 1091 and a mounting member 1092, wherein the width of the mounting member 1092 is greater than the width of the fixing member 1091. The fixing member 1091 is detachably mounted on the upper surface of the upper pressure plate 107 by screws. The mounting member 1092 is provided with a through hole, and the probe 105 is fixed on the mounting member 1092. In this solution, since the mounting part 109 is detachably mounted on the upper pressure plate 107, the probe 105 and the mounting part 109 can be treated as a single unit, and probes 105 with different intervals and different first extension lengths can be fixedly mounted on different mounting parts 109, thus selecting different mounting parts 109 according to different positions of the tab 201.

[0070] Those skilled in the art will understand that, in other solutions, the fastener 1091 can be mounted to the upper surface of the upper pressure plate 107 not only by screws but also by adhesive. Although this adhesive-attached connection does not allow for a detachable connection between the upper pressure block 101 and the upper pressure plate 107, it still ensures a secure connection between the two.

[0071] In one specific implementation, to save materials, the width of the mounting portion 109 can be designed to be smaller than the width of the upper pressure plate 107. Since the function of the mounting portion 109 is only to mount the probe 105, and the probe 105 needs to be set to correspond with the tab 201, the tab 201 is usually not set at the end of the battery stack 200, so it is not necessary to design the width of the mounting portion 109 to be the same as that of the upper pressure plate 107.

[0072] Those skilled in the art will also understand that the size of the mounting component 1092 and the size of the fixing component 1091 are not specifically limited in this solution, as long as the fixing component 1091 can be firmly fixed on the upper pressure plate 107 and there is enough space on the mounting component 1092 to install the probe 105.

[0073] In some embodiments, at least one of the first clamping portion 103 of the upper pressure block 101 and the second clamping portion 103-1 of the lower pressure block 102 has a guide block 110 extending along the vertical direction toward the other, the guide block 110 being configured to bring the battery stack 200 toward the center of the upper pressure block 101 in the length direction and / or width direction of the upper pressure block 101.

[0074] like Figure 2 As shown, in this design, the outer edge of the first clamping portion 103 of the upper pressure block 101 has a guide block 110 extending vertically downward in the direction of the pressure plate 108, thus giving the first clamping portion 103 a first clamping surface and a second clamping surface. Specifically, the first clamping surface abuts against the upper surface of the battery stack 200 and limits the battery stack 200 in the vertical direction, while the second clamping surface abuts against the side surface of the battery stack 200 and limits the battery stack 200 in the horizontal direction. In this design, by providing the guide block 110 on the first clamping portion 103, the battery stack 200 can converge towards the center in both its length and width directions, avoiding situations such as separator folding and electrode puncture during adhesive application, thereby improving product quality.

[0075] In other embodiments, the guide block 110 may be provided only on the first clamping portion 103 arranged along the length direction, or it may be provided only on the first clamping portion 103 arranged along the width direction. Correspondingly, the guide block 110 may limit the battery stack 200 only in the length direction or only in the width direction.

[0076] Those skilled in the art can understand that the above scheme only describes the case where the guide block 110 is arranged on the upper pressing block 101 and the lower pressing block 102 is not provided with the guide block 110. In other embodiments, the guide block 110 is arranged on the lower pressing block 102 and the upper pressing block 101 is not provided with the guide block 110. Or the guide block 110 is arranged on both the upper pressing block 101 and the lower pressing block 102. These schemes also fall within the protection scope of the present scheme. In addition, the guide block 110 is arranged on each clamping part, or only a few specific clamping parts, which also falls within the protection scope of the present application.

[0077] In a specific embodiment, the protruding height of the guide block 110 is set to 2 mm, and the height direction is consistent with the extension direction of the upper pressing block 101 to the lower pressing block 102. Of course, those skilled in the art can make corresponding adjustments to the height of the guide block 110 according to specific needs.

[0078] The pressing block clamp 100 disclosed in the present application has the function of detecting the insulation resistance before the rubber is attached, so as to ensure that it meets the requirements. The clamp can make corresponding adjustments according to the test results, which helps to quickly find and solve the problems in production, thereby reducing the generation of defective products and improving the overall quality of the final product. In addition, the first clamping part 103 of the clamp is provided with a guide block 110, so that the clamp can position the battery core stack 200 in the horizontal direction, effectively prevent the diaphragm from folding or the pole piece from being damaged during the rubber attachment, and further improve the quality of the product.

[0079] In some embodiments, the present application also provides a lamination device, which comprises the battery core stack 200 and the pressing block clamp 100 described in the above scheme, the battery core stack 200 is placed on the pressing block clamp, and the pressing block clamp 100 clamps the battery core stack 200 and is used for attaching rubber and insulation testing on the battery core stack 200.

[0080] The lamination device provided by the present application can not only realize the function of clamping the battery core stack 200, but also can attach rubber and insulation test on the battery core stack 200 due to the arrangement of the pressing block clamp 100. That is, the lamination device provided by the present application realizes multiple functions such as clamping, rubber attachment and insulation testing of the battery core stack 200 by arranging the pressing block clamp 100, which improves the automation and efficiency of battery manufacturing.

[0081] While several embodiments of the disclosure have been shown and described herein, it is to be understood that the embodiments are merely exemplary. Numerous changes, substitutions and equivalents can occur to those skilled in the art without departing from the spirit and scope of the disclosure. It should be understood that various alternatives to the embodiments of the disclosure described herein can be employed in practicing the disclosure. It is intended that the following claims define the scope of the disclosure and that methods equivalent to those shown and described herein can be utilized without departing from the spirit and scope of the disclosure.

Claims

1. A pressing fixture for applying adhesive and performing insulation testing on battery stacks, characterized in that, It includes an upper pressing block (101) and a lower pressing block (102) arranged opposite each other in the vertical direction. The upper pressing block (101) and the lower pressing block (102) are respectively provided with a plurality of first clamping parts (103) and second clamping parts (103-1) for clamping the battery stack (200) on their opposite sides. There is a first adhesive gap (104) between two adjacent first clamping parts (103) and a second adhesive gap (104-1) between two adjacent second clamping parts. The first adhesive gap (104) and the second adhesive gap (104-1) correspond one-to-one in the vertical direction. The clamping fixture also includes a probe (105), which is disposed at the end of the upper clamping block (101) and extends toward the lower clamping block (102) in the vertical direction. The extended end of the probe (105) abuts against the tab (201) of the clamped battery stack (200) and detects the insulation resistance of the tab (201).

2. The briquetting clamp according to claim 1, characterized in that, The lower pressure block (102) has a support portion (106) corresponding to the probe (105). The support portion (106) is disposed at the end of the lower pressure block (102) and extends toward the upper pressure block (101). The support portion (106) is used to support the tab (201).

3. The briquetting fixture according to claim 1, characterized in that, The probe (105) is adjustablely mounted on the upper pressure block (101) along the vertical direction. The probe (105) includes a first extension section (1051) and a second extension section (1052) connected to each other. The first extension section (1051) and the second extension section (1052) are respectively located on both sides of the upper pressure block (101) along the vertical direction, and their lengths along the vertical direction are adjustable.

4. The briquetting fixture according to claim 1, characterized in that, The probe (105) is disposed at at least one end of the upper pressure block (101) along its length, and at least one probe (105) is provided at the end. When two probes (105) are provided at the end, N through holes are provided at intervals along the width direction of the upper pressure block (101) at the end. The two probes (105) are disposed in any two of the through holes, where N is a positive integer not less than 2.

5. The briquetting fixture according to claim 2, characterized in that, The upper pressure block (101) includes an upper pressure plate (107), and a plurality of first clamping parts (103) are provided on the lower surface of the upper pressure plate (107) protruding in the circumference of the upper pressure plate (107), and the plurality of first clamping parts (103) form a receiving space, in which the battery stack (200) is received; The lower pressure block (102) includes a lower pressure plate (108), and a plurality of second clamping parts (103-1) protrude from the upper surface of the lower pressure plate (108), and the upper surfaces of the plurality of second clamping parts (103-1) are flush and form a first support surface to support the battery stack (200).

6. The briquetting fixture according to claim 5, characterized in that, The support portion (106) is protruding from the upper surface of the lower pressure plate (108). The upper surface of the support portion (106) forms a second support surface. The second support surface is flush with the first support surface or protrudes from the first support surface along the vertical direction toward the upper pressure plate.

7. The briquetting clamp according to claim 5 or 6, characterized in that, The upper pressure plate (107) is provided with a mounting part (109) at its end, and the probe (105) is mounted on the mounting part (109), wherein the mounting part (109) is integrally formed with the upper pressure plate (107) or is detachably connected to the upper pressure plate (107).

8. The briquetting fixture according to claim 1, characterized in that, It also includes an adhesive application tool (300) disposed on one side of the upper pressure block (101) in the length or width direction. The adhesive application tool (300) includes a plurality of support arms, at least two of the support arms being disposed opposite each other in the vertical direction. The two support arms are used to clamp the adhesive and can move along the length or width direction of the upper pressure block (101) to extend into or out of the first adhesive application gap (104) and the second adhesive application gap (104-1) respectively.

9. The briquetting fixture according to claim 1, characterized in that, At least one of the first clamping portion (103) of the upper pressure block (101) and the second clamping portion (103-1) of the lower pressure block (102) has a guide block (110) extending along the vertical direction toward the other at its outer edge. The guide block (110) is configured to bring the battery stack (200) toward the center of the upper pressure block (101) in the length direction and / or width direction.

10. A stacking device, comprising a battery stack (200) and a pressing fixture (100) as described in any one of claims 1-9, wherein the battery stack (200) is placed on the pressing fixture, and the pressing fixture (100) clamps the battery stack and is used to perform adhesive bonding and insulation testing on the battery stack.

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