Battery cell liquid injection positioning tool

Abstract

The utility model relates to the technical field of battery processing, in particular to a battery cell liquid injection positioning tool which comprises a main frame, datum plates and movable plates, and the datum plates are arranged on the main frame at intervals; the movable plates are arranged on the main frame and are parallel to the datum plates, the movable plates and the datum plates are arranged at intervals, the movable plates can be close to or away from the adjacent datum plates in the first direction, and the first direction is the direction perpendicular to the datum plates. The two opposite sides of the battery cell are limited by the datum plate and the movable plate respectively, so that the battery cell is precisely positioned, and the liquid injection hole is aligned with the liquid injection head in the liquid injection process; the spacing distance between the movable plate and the reference plate is increased by enabling the movable plate to be far away from the adjacent reference plate along the direction perpendicular to the reference plate, so that the battery cell is smoothly taken out from the space between the movable plate and the reference plate after liquid injection of the battery cell is completed, and the battery cell shell is prevented from being damaged.

Description

Technical Field

[0001] The present application relates to the field of battery processing technology, and in particular to a battery cell liquid injection positioning tool. Background Art

[0002] As people's environmental awareness increases, the development and application of lithium-ion batteries have been improved. Square lithium-ion batteries have become the main product of new energy companies due to their advantages such as high packaging reliability, good tolerance, and relatively simple grouping. During the manufacturing process of square shell lithium batteries, it is necessary to inject liquid into the assembled battery cells, and tooling is required to constrain and precisely position the battery cells during the injection process.

[0003] Traditional injection tooling adopts a clearance fit positioning method. The gap between the injection tooling and the battery cell is too large to achieve precise positioning, which will cause the injection hole to be unable to align with the injection head and result in poor injection. The gap between the injection tooling and the battery cell is too small, which can easily cause damage to the battery cell shell during the removal and placement of the battery cell. As the injection volume increases, the electrolyte accumulates at the bottom of the battery cell shell, increasing the shell thickness, resulting in interference between the shell and the positioning tooling, which makes it impossible to unload the battery cell after the injection is completed. Utility Model Content

[0004] The present application provides a battery cell liquid injection positioning tool, which is used to solve the problem in the prior art that the gap between the liquid injection tool and the battery cell is too large to achieve precise positioning, and the gap is too small to easily damage the battery cell shell.

[0005] On the one hand, the present application provides a battery cell injection positioning tool, comprising:

[0006] Main frame;

[0007] A reference plate is arranged on the main frame at intervals;

[0008] The movable plate is arranged on the main frame and is parallel to the reference plate. The movable plate and the reference plate are arranged at intervals. The movable plate can approach or move away from the adjacent reference plate along a first direction, and the first direction is a direction perpendicular to the reference plate.

[0009] In a possible design, the tooling further includes a first elastic member disposed on the main frame, the first elastic member being connected to the movable plate, and the first elastic member being able to elastically extend and retract to move the movable plate away from or close to the reference plate.

[0010] In one possible design, the tooling also includes:

[0011] A connecting piece, which is connected to a position of any movable plate close to an edge;

[0012] The push-drive assembly is arranged on the main frame and abuts against the connecting member. The push-drive assembly can drive any connecting member to move along the first direction to make the movable plate approach or move away from the adjacent reference plate.

[0013] In one possible design, the push drive assembly includes:

[0014] A fixed seat, arranged on the main frame;

[0015] A pressing shaft is slidably arranged on a fixed seat, the axis of the pressing shaft is parallel to the height direction of the main frame, and can move along the height direction of the main frame;

[0016] The conical sleeve is sleeved on the pressing shaft, the outer wall of the conical sleeve is in contact with the connecting piece, and the conical sleeve can move along the height direction of the main frame driven by the pressing shaft to enable the connecting piece to move along the first direction.

[0017] In a possible design, the push-drive assembly also includes a second elastic member, which is disposed on a fixed seat and connected to the pressure shaft. The second elastic member moves the pressure shaft along the height direction of the main frame through elastic expansion and contraction.

[0018] In one possible design, the connector includes:

[0019] A connecting rod, the length direction of which is parallel to the first direction, and the connecting rod is passed through a position close to an edge of any movable plate;

[0020] The shift shaft is vertically connected with the connecting rod, and the outer wall of the shift shaft abuts against the outer wall of the conical sleeve.

[0021] In a possible design, the connecting member further includes a bearing, and the bearing sleeve is disposed on the shift shaft, and the outer wall of the bearing abuts against the outer wall of the tapered sleeve.

[0022] In one possible design, the main frame includes:

[0023] Base plate;

[0024] Side panels are arranged on opposite sides of the bottom plate and are perpendicular to the bottom plate;

[0025] The standard plate is arranged on the bottom plate, is perpendicular to the reference plate, and is located between the adjacent reference plate and the movable plate.

[0026] In a possible design, the main frame further includes a guide slide bar, which is mounted on the side plate, the length direction of the guide slide bar is parallel to the first direction, and the guide slide bar is passed through a position close to an edge of any movable plate.

[0027] In a possible design, a baffle ring is spaced apart on the guide slide rod, the end face of the baffle ring close to the adjacent movable plate is the first plane, the side face of the standard plate close to the adjacent movable plate is the second plane, and the first plane and the second plane are located in the same plane.

[0028] The beneficial effects of this application are as follows:

[0029] The battery cell injection positioning tooling of the present application arranges a reference plate and a movable plate on a main frame at intervals, and the movable plate and the reference plate are parallel to each other, so that a space for placing the battery cell is formed between adjacent reference plates and movable plates; the movable plate is moved closer to the adjacent reference plate in a direction perpendicular to the reference plate, thereby reducing the spacing distance between the movable plate and the reference plate, so that after the battery cell is placed between the movable plate and the reference plate, the opposite sides of the battery cell are respectively limited by the reference plate and the movable plate, thereby achieving precise positioning of the battery cell, thereby ensuring that the injection hole is aligned with the injection head during the injection process, thereby improving the battery cell yield; the movable plate is moved away from the adjacent reference plate in a direction perpendicular to the reference plate, thereby increasing the spacing distance between the movable plate and the reference plate, so that after the battery cell is injected with liquid, the battery cell can be smoothly taken out from between the movable plate and the reference plate, thereby avoiding damage to the battery cell shell.

[0030] In addition, since the movable plate in the tooling of the present application can move closer to or farther from the adjacent reference plate in a direction perpendicular to the reference plate, the tooling can be used to inject liquid into battery cells of different thicknesses. At the same time, even if the electrolyte accumulates at the bottom of the shell after the injection, causing the thickness of the battery shell to increase, the shell and the positioning tooling will not interfere with each other, so that the battery cells after the injection can be unloaded smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 A structural schematic diagram of a battery cell liquid injection positioning tool provided in one embodiment of the present application;

[0033] Figure 2 Another structural schematic diagram of a battery cell liquid injection positioning tool provided in one embodiment of the present application;

[0034] Figure 3 A schematic diagram of the structure of a push-drive assembly of a battery cell injection positioning tool provided in one embodiment of the present application;

[0035] Figure 4 A schematic structural diagram of a battery cell liquid injection positioning tool in a liquid injection state provided in one embodiment of the present application.

[0036] Reference numerals:

[0037] 100-main frame, 110-bottom plate, 120-side plate, 130-standard plate, 140-guide slide rod, 141-blocking ring, 200-reference plate, 300-movable plate, 400-first elastic member, 410-first spring, 420-second spring, 500-connecting member, 510-connecting rod, 520-shifting axis, 530-bearing, 600-push drive assembly, 610-fixed seat, 611-upper plate, 612-lower plate, 620-pressing shaft, 630-conical sleeve, 640-second elastic member, 641-third spring, 642-fourth spring, 710-upper cavity, 720-lower cavity, 730-pressing block. DETAILED DESCRIPTION

[0038] The technical solution of the present application will be described clearly and completely below in conjunction with the embodiments. Obviously, the described embodiments are 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 the field without creative work are within the scope of protection of the present application.

[0039] Combine the following Figure 1-Figure 4 , describes the battery cell injection positioning tooling provided in the embodiment of the present application. The tooling includes a main frame 100, a reference plate 200 and a movable plate 300, wherein the reference plate 200 is arranged on the main frame 100 at intervals, and the number of the reference plate 200 is at least one; the movable plate 300 is arranged on the main frame 100, and the number of the movable plate 300 is at least one, the movable plate 300 is parallel to the reference plate 200, and the movable plate 300 is arranged at intervals from the reference plate 200, and the movable plate 300 can approach or move away from the adjacent reference plate 200 along a first direction, and the first direction is a direction perpendicular to the reference plate 200. In some of the embodiments, the reference plate 200 is mounted on the main frame 100 by bolts, and the number of the reference plates 200 can be 10, 12, 13, etc.; a slide groove is provided at a position corresponding to the movable plate 300 on the main frame 100, and the edge of the movable plate 300 is stuck in the slide groove and can move along the inner wall of the slide groove, and the number of the movable plates 300 can be 10, 12, 13, etc.; the reference plate 200 and the movable plate 300 are both vertically arranged, wherein a reference plate 200 and an adjacent movable plate 300 form a group, for example, each reference plate 200 and the movable plate 300 on its right side form a group, and a battery cell is placed between the reference plate 200 and the movable plate 300 in the same group; after the battery cell is placed, the left side of the battery cell abuts against the reference plate 200, and the right side of the battery cell abuts against the movable plate 300. During the process of inserting and removing the battery cells, the movable plate 300 moves to the right to move away from the reference plate 200 to reduce the lateral pressure on the battery cells and prevent the battery cells from being damaged during the process of taking and placing; during the process of injecting liquid into the battery cells, the movable plate 300 moves to the left to move close to the reference plate 200 to clamp the battery cells for limiting the position, so that the injection hole is aligned with the injection head to improve the alignment.

[0040] By using the technical solution of the above embodiment, the reference plate 200 and the movable plate 300 are spaced apart on the main frame 100, and the movable plate 300 and the reference plate 200 are parallel to each other, so that a space for placing the battery cell is formed between the adjacent reference plates 200 and the movable plate 300; by making the movable plate 300 approach the adjacent reference plate 200 in a direction perpendicular to the reference plate 200, and reducing the spacing distance between the movable plate 300 and the reference plate, after the battery cell is placed between the movable plate 300 and the reference plate 200, the opposite sides of the battery cell are respectively limited by the reference plate 200 and the movable plate 300, so that the battery cell is precisely positioned, thereby ensuring that the injection hole is aligned with the injection head during the injection process, thereby improving the battery cell yield; by making the movable plate 300 move away from the adjacent reference plate 200 in a direction perpendicular to the reference plate 200, and increasing the spacing distance between the movable plate 300 and the reference plate, after the battery cell is injected, the battery cell can be smoothly taken out from between the movable plate 300 and the reference plate 200 to avoid damage to the battery cell shell.

[0041] Reference Figure 1 , Figure 2As shown, in some embodiments of the present application, the tooling further includes a first elastic member 400, the first elastic member 400 is disposed on the main frame 100, the first elastic member 400 is connected to the movable plate 300, and the first elastic member 400 makes the movable plate 300 move away from or close to the reference plate 200 through elastic expansion. In some specific embodiments, the first elastic member 400 is disposed at the positions of the opposite ends of the movable plate 300 to ensure that the speeds of the opposite ends are consistent when the movable plate 300 moves. In some specific embodiments, the first elastic member 400 is a spring, one end of the spring is connected to the main frame 100, the other end of the spring is connected to the movable plate 300, and the axis of the spring is perpendicular to the reference plate 200, so as to provide the movable plate 300 with an adjustment distance for left and right movement through the expansion of the spring. The spring can be disposed on both sides of each movable plate 300, for example, the first spring 410 is disposed on the left side of the movable plate 300, and the second spring 420 is disposed on the right side of the movable plate 300. It should be noted that the first spring 410 and the second spring 420 are both in a compressed initial state when no battery cell is placed. Therefore, the extension and compression involved in the following content of the embodiment of the present application are not actual extension or compression, but are relative to the initial state of the first spring 410 and the second spring 420 when no battery cell is placed. When the first spring 410 is compressed and the second spring 420 is extended, the distance between the movable plate 300 and the reference plate 200 is reduced, so that the battery cell is precisely positioned to ensure that the injection hole is aligned with the injection head during the injection process; when the first spring 410 and the second spring 420 are reset to the initial state, the distance between the movable plate 300 and the reference plate 200 is restored to the no-load state, so that after the battery cell is injected, the battery cell can be smoothly removed from between the movable plate 300 and the reference plate 200 to avoid damage to the battery cell housing. In other specific embodiments, all the movable plates 300 are connected by connecting members 500 so that the movable plates 300 can maintain a state of being parallel to each other and spaced apart, so that the springs can be connected to some of the movable plates 300, for example, the springs are respectively connected to the outermost movable plates 300, specifically, the left end of the first spring 410 is connected to the main frame 100, and the right end is connected to the leftmost movable plate 300; the left end of the second spring 420 is connected to the rightmost movable plate 300, and the right end is connected to the main frame 100, so that when the battery cell is injected with liquid, the first spring 410 is compressed and the second spring 420 is extended to make the movable plate 300 move to the left as a whole to increase the lateral pressure on the battery cell and limit the battery cell; when the battery cell is inserted or removed, the first spring 410 and the second spring 420 are reset to the initial state, and the movable plate 300 moves to the right as a whole to reduce the pressure on the battery cell to facilitate the insertion or removal of the battery cell; in this way, the number of springs used can be reduced and the tooling components can be simplified on the basis of ensuring the overall movement of the movable plate 300. By using the first elastic member 400, the battery cell will not be damaged during the process of taking and placing the material.In other embodiments, the first elastic member 400 may further include a spring rod, the length direction of the spring rod is along a direction perpendicular to the reference plate 200, one end of the spring rod is fixed to the main frame 100, and the first spring 410 and the second spring 420 are respectively mounted on the corresponding spring rods, so that the spring can be kept extending and retracting in a direction perpendicular to the reference plate 200.

[0042] Reference Figure 1 , Figure 2 , Figure 3 As shown, in some embodiments of the present application, the tooling also includes a connecting member 500 and a pushing and driving assembly 600, the connecting member 500 is connected to a position close to the edge of any movable plate 300; the pushing and driving assembly 600 is arranged on the main frame 100 and abuts against the connecting member 500, and the pushing and driving assembly 600 can drive the connecting member 500 to move along the first direction to make the movable plate 300 approach or move away from the adjacent reference plate 200. In this way, the push-drive component 600 drives the connecting piece 500 and then drives all the movable plates 300 as a whole to approach the base plate 200, which can increase the lateral pressure of the movable plate 300 on the battery cell, so that the movable plate 300 and the base plate 200 can jointly play a role in precisely positioning the middle battery cell to ensure that the injection hole and the injection head are accurately aligned during injection; the push-drive component 600 drives the connecting piece 500 and then drives all the movable plates 300 as a whole to move away from the base plate 200, which can reduce the lateral pressure of the movable plate 300 on the battery cell to avoid the battery cell being scratched by the movable plate 300 when the battery cell is placed in or taken out.

[0043] Reference Figure 3As shown, in some embodiments of the present application, the push-drive assembly 600 includes a fixed seat 610, a pressure shaft 620 and a conical sleeve 630, the fixed seat 610 is arranged on the main frame 100; the pressure shaft 620 is slidably arranged on the fixed seat 610, the axis of the pressure shaft 620 is parallel to the height direction of the main frame 100, and the pressure shaft 620 can move along the height direction of the main frame 100; the conical sleeve 630 is sleeved on the pressure shaft 620, the outer wall of the conical sleeve 630 is abutted against the connecting member 500, and the conical sleeve 630 can move along the height direction of the main frame 100 driven by the pressure shaft 620 to make the connecting member 500 move along the first direction. In some specific embodiments, the fixing seat 610 includes an upper plate 611 and a lower plate 612, the lower plate 612 is fixed to the main frame 100 by bolts, the upper plate 611 is provided with an axial hole penetrating the upper plate 611 along the height direction of the main frame 100, the pressing shaft 620 is passed through the axial hole, that is, the pressing shaft 620 is vertically arranged, and the upper end of the pressing shaft 620 is higher than the upper plate 611, so that when the upper end of the pressing shaft 620 is pressed, the pressing shaft 620 can slide downward along the inner wall of the axial hole; when the pressing shaft 620 is pulled up, the pressing shaft 620 can slide upward along the inner wall of the axial hole. The inner wall of the conical sleeve 630 and the outer wall of the pressing shaft 620 are matched with each other in a clearance so as to move up and down with the pressing shaft 620; specifically, the outer diameter of the conical sleeve 630 gradually decreases from the upper end to the lower end so that the outer wall of the conical sleeve 630 forms an inclined surface, and the connecting piece 500 is located on the left side of the conical sleeve 630 and abuts against the outer wall of the conical sleeve 630; when the conical sleeve 630 moves downward, the outer wall of the conical sleeve 630 can push the connecting piece 500 to move left, and then the connecting piece 500 drives all the movable plates 300 to approach the reference plate 200 as a whole, and then the movable plates 300 and the reference plate 200 jointly play a role in precisely positioning the middle battery cell, so as to ensure that the injection hole and the injection head are accurately aligned during injection. When the conical sleeve 630 moves upward, the connecting member 500 loses its driving force, and under the action of the first elastic member 400, all the movable plates 300 move rightward as a whole and away from the reference plate 200 to achieve reset, so as to reduce the lateral pressure of the movable plates 300 on the battery cells, so as to avoid the battery cells being scratched by the movable plates 300 when being placed in or taken out.

[0044] Reference Figure 3As shown, in some embodiments of the present application, the push-drive assembly 600 also includes a second elastic member 640, which is disposed on the fixed seat 610, and the second elastic member 640 is connected to the pressure shaft 620. The second elastic member 640 elastically expands and contracts to move the pressure shaft 620 along the height direction of the main frame 100. In some embodiments, the second elastic member 640 includes a third spring 641 and a fourth spring 642, and the third spring 641 and the fourth spring 642 are respectively sleeved on the pressing shaft 620; a first baffle is fixed along its radial direction near the upper end of the pressing shaft 620, the upper end of the third spring 641 abuts against the upper plate 611, and the lower end abuts against the first baffle; a second baffle is fixed along its radial direction near the lower end of the pressing shaft 620, the lower end of the fourth spring 642 abuts against the lower plate 612, and the upper end abuts against the second baffle; thereby, by providing the second elastic member 640, the pressing shaft 620 can be smoothly moved downward when an external force presses the pressing shaft 620, and at the same time, through the elastic force of the third spring 641 and the fourth spring 642, the pressing shaft 620 can be reset and stably located in the shaft hole when the external force is withdrawn. In some specific embodiments, in order to prevent the second elastic member 640 from shifting, column grooves are respectively provided on the upper plate 611 and the lower plate 612 , and the third spring 641 and the fourth spring 642 are respectively disposed in the corresponding column grooves.

[0045] Reference Figure 1 , Figure 2 As shown, in some embodiments of the present application, the connecting member 500 includes a connecting rod 510 and a shifting shaft 520, the length direction of the connecting rod 510 is parallel to the first direction, and the connecting rod 510 is disposed at a position near the edge of any movable plate 300; the shifting shaft 520 is vertically connected to the connecting rod 510, and the outer wall of the shifting shaft 520 abuts against the outer wall of the conical sleeve 630. In some embodiments, a plate hole is opened at a position near the edge of the movable plate 300, and the outer wall of the connecting rod 510 and the inner wall of the plate hole are clearance-matched or the connecting rod 510 and the inner wall of the plate hole are welded and fixed, so that all movable plates 300 are fixed on the connecting rod 510, and the axis of the shifting shaft 520 is perpendicular to the axis of the pressing shaft 620, so that when the conical sleeve 630 moves downward, the conical sleeve 630 can push the shifting shaft 520 to slide along the outer wall of the conical sleeve 630, thereby causing the shifting shaft 520 to move leftward and drive the connecting member 500 and the movable plate 300 to move leftward.

[0046] Reference Figure 1 , Figure 2As shown, in some embodiments of the present application, the connecting member 500 further includes a bearing 530, which is sleeved on the shift shaft 520, and the outer wall of the bearing 530 abuts against the outer wall of the tapered sleeve 630. By sleeved the bearing 530 on the shift shaft 520, the sliding friction between the shift shaft 520 and the outer wall of the tapered sleeve 630 is converted into rolling friction between the bearing 530 and the outer wall of the tapered sleeve 630 by the rotation of the bearing 530, which is conducive to reducing noise and wear on the tapered sleeve 630, so that the movable plate 300 can stably move leftward.

[0047] Reference Figure 1 , Figure 2 As shown, in some embodiments of the present application, the main frame 100 includes a bottom plate 110, a side plate 120 and a standard plate 130. The side plates 120 are fixed to opposite sides of the bottom plate 110. The side plates 120 are perpendicular to the bottom plate 110. The outer side of the side plates 120 is provided with a protrusion, and a mounting hole is provided on the protrusion. The protrusion is used to connect with the inner wall of the lower cavity 720 during liquid injection. The standard plate 130 is arranged on the bottom plate 110. The standard plate 130 is vertically connected to the position near the edge of the reference plate 200. The number of standard plates 130 corresponds to the number of reference plates 200, for example, it can be 10, 12, 13, etc., and each standard plate 130 is respectively located between a group of adjacent reference plates 200 and the movable plate 300. It should be noted that the width of the standard plate 130 is equal to the thickness of a battery cell. By arranging the standard plate 130 between a group of adjacent reference plates 200 and the movable plate 300 , it is equivalent to setting a leftward limit position for the movable plate 300 to prevent the movable plate 300 from excessively squeezing the battery cell.

[0048] Reference Figure 1 , Figure 2 As shown, in some embodiments of the present application, the main frame 100 further includes a guide slide bar 140, both ends of which are respectively mounted on the side plates 120, the length direction of the guide slide bar 140 is parallel to the first direction, that is, perpendicular to the reference plate 200, and the guide slide bar 140 is arranged at a position close to the edge of any movable plate 300, and any movable plate 300 can slide along the outer wall of the guide slide bar 140. By providing the guide slide bar 140, it is ensured that the movable plate 300 is necessarily close to or away from the reference plate 200 in a direction perpendicular to the reference plate 200.

[0049] Reference Figure 1 , Figure 2As shown, in some embodiments of the present application, a baffle ring 141 is sleeved on the guide slide bar 140 at intervals, and the end face of the baffle ring close to the adjacent movable plate 300 is the first plane, that is, the right end face of the baffle ring is the first plane, and the side face of the standard plate 130 close to the adjacent movable plate 300 is the second plane, that is, the right side face of the standard plate 130 is the second plane, and the first plane and the second plane are located in the same plane. By setting the baffle ring 141, and the right end face of the baffle ring and the right side face of the standard plate 130 are located in the same plane, it is equivalent to setting a limit position of left shift for the movable plate 300 to prevent the movable plate 300 from excessively squeezing the battery cell. In some embodiments, the edge of the movable plate 300 that contacts the battery cell is provided with a chamfer to facilitate the placement of the battery cell between the reference plate 200 and the movable plate 300.

[0050] The working process of the battery cell injection positioning tooling in the above embodiment of the present application is as follows:

[0051] Reference Figure 4 As shown, the tooling is placed inside the lower cavity 720, and the tooling is installed on the inner wall of the lower cavity 720 with bolts; the first spring 410 and the second spring 420 keep the movable plate 300 and the reference plate 200 open, and the battery cell is clamped by the manipulator and placed between the movable plate 300 and the reference plate 200; after the battery cell is placed, the upper cavity 710 moves downward, and is enclosed with the lower cavity 720 through the positioning pin, and a circle of the upper cavity 710 and the lower cavity 720 is formed. The sealing ring reaches a sealing state; when the upper cavity 710 moves downward, the pressing block 730 abuts against the upper end of the pressing shaft 620, pressing the pressing shaft 620 downward; the pressing shaft 620 moves downward to drive the conical sleeve 630 to move downward, pushing the bearing 530 to move to the left, and the bearing 530 drives all the movable plates 300 to move to the left through the connecting rod 510, and clamps the battery cell between the movable plate 300 and the reference plate 200, playing a role in precise positioning; start the injection procedure, and start injection;

[0052] After the liquid injection is completed, the upper cavity 710 is lifted, and at the same time, the pressure shaft 620 is bounced upward under the action of the fourth spring 642, the conical sleeve 630 moves upward, and the bearing 530 rolls on the outer wall surface of the conical sleeve 630. At the same time, the connecting rod 510 moves to the right to reset under the action of the first spring 410 and the second spring 420, thereby releasing all the movable plates 300, so that the movable plates 300 and the reference plate 200 are reopened, thereby facilitating the robot arm to clamp the battery cell and complete the liquid injection work.

[0053] The battery cell injection positioning tooling of the above embodiment of the present application has at least the following beneficial effects:

[0054] 1. Using the principle of spring expansion and contraction, the large surfaces on both sides of the battery cell are always kept in contact with the outer surface of the battery cell during the placement process. After the battery cell is completely placed in the tooling, the push drive assembly 600 is used to precisely position the battery cell to ensure that the injection hole and the injection head are completely aligned;

[0055] 2. By providing the push drive assembly 600 inside the upper cavity 710 and the lower cavity 720, the sealing performance of the liquid injection cavity under high vacuum and high positive pressure conditions can be met;

[0056] 3. The spring expansion principle is used to automatically adapt to the increase in cell thickness caused by electrolyte accumulation. When the cell is taken out, the cell will not be damaged due to the interference fit between the cell and the tooling. After the unloading is completed, the tooling gap is automatically restored to the tooling no-load state gap through the spring expansion principle.

[0057] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0058] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0059] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0060] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0061] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A battery cell injection positioning tool, characterized in that: include: Main frame; A reference plate is arranged on the main frame at intervals; The movable plate is arranged on the main frame and is parallel to the reference plate. The movable plate and the reference plate are arranged at intervals. The movable plate can approach or move away from the adjacent reference plate along a first direction, and the first direction is a direction perpendicular to the reference plate.

2. The battery core injection positioning tool according to claim 1, characterized in that: It also includes a first elastic member, which is arranged on the main frame. The first elastic member is connected to the movable plate. The first elastic member elastically expands and contracts to move the movable plate away from or close to the reference plate.

3. The battery core liquid injection positioning tool according to claim 1 or 2, characterized in that: Also includes: A connecting piece, the connecting piece is connected to a position close to an edge of any of the movable panels; A push-drive assembly is disposed on the main frame and abuts against the connecting member. The push-drive assembly can drive the connecting member to move along the first direction so that any of the movable plates moves closer to or farther from the adjacent reference plate.

4. The battery core liquid injection positioning tool according to claim 3, characterized in that: The push drive assembly comprises: A fixing seat, arranged on the main frame; A pressing shaft is slidably disposed on the fixing seat, the axis of the pressing shaft is parallel to the height direction of the main frame, and can move along the height direction of the main frame; A conical sleeve is sleeved on the pressing shaft, the outer wall of the conical sleeve is in contact with the connecting piece, and the conical sleeve can move along the height direction of the main frame driven by the pressing shaft to enable the connecting piece to move along the first direction.

5. The battery core liquid injection positioning tool according to claim 4, characterized in that: The push-drive assembly also includes a second elastic member, which is disposed on the fixing seat and connected to the pressure shaft. The second elastic member enables the pressure shaft to move along the height direction of the main frame through elastic expansion and contraction.

6. The battery core liquid injection positioning tool according to claim 4, characterized in that: The connecting piece comprises: A connecting rod, the length direction of which is parallel to the first direction, and the connecting rod is passed through a position close to an edge of any of the movable plates; The shift shaft is vertically connected to the connecting rod, and the outer wall of the shift shaft abuts against the outer wall of the conical sleeve.

7. The battery core liquid injection positioning tool according to claim 6, characterized in that: The connecting member further comprises a bearing, and the bearing sleeve is arranged on the shift shaft, and the outer wall of the bearing abuts against the outer wall of the tapered sleeve.

8. The battery core liquid injection positioning tool according to claim 1 or 2, characterized in that: The main framework includes: Base plate; Side panels, arranged on opposite sides of the bottom plate and perpendicular to the bottom plate; The standard plate is arranged on the bottom plate, is perpendicular to the reference plate, and is located between the adjacent reference plate and the movable plate.

9. The battery core liquid injection positioning tool according to claim 8, characterized in that: The main frame further comprises a guide slide bar, which is mounted on the side plate, the length direction of which is parallel to the first direction, and the guide slide bar is passed through a position close to an edge of any movable plate.

10. The battery core liquid injection positioning tool according to claim 9, characterized in that: A baffle ring is sleeved on the guide slide rod at intervals, the end face of the baffle ring close to the adjacent movable plate is a first plane, the side face of the standard plate close to the adjacent movable plate is a second plane, and the first plane and the second plane are located in the same plane.

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