Assembling jig for lithium battery shell

Abstract

The utility model discloses an assembling jig for a lithium battery shell, which belongs to the field of lithium battery shell assembling equipment and comprises a workbench, a first fixing box and a second fixing box are fixedly connected onto the workbench, a moving mechanism is arranged on the workbench and comprises a moving box, and a pressurizing mechanism is arranged on the workbench. A plurality of abutting mechanisms are installed in the first fixed box, the second fixed box and the movable box. The device has the beneficial effects that a pressurizing mechanism and an abutting mechanism are arranged, a moving box, a plurality of adjusting plates and a moving plate are arranged, so that the device can adapt to battery shells of different sizes, and the bottom and the side face of the battery shells are fixedly assembled; the problems that in the prior art, an assembly jig needs to be matched with parts to achieve pressure maintaining, and when a battery shell is pressed to deform or the manufacturing precision is not accurate, pressure maintaining is prone to being excessive or not in place are effectively solved.

Description

Technical Field

[0001] The utility model relates to the field of lithium battery shell assembly equipment, in particular to an assembly fixture for a lithium battery shell. Background Technique

[0002] A lithium battery is a primary battery with a lithium metal or lithium alloy as the negative electrode material and a non-aqueous electrolyte solution. Due to the very active chemical properties of lithium metal, the processing, storage, and use of lithium metal have very high requirements for the environment. As a basic component of a lithium battery, a well-assembled lithium battery shell can effectively ensure the performance of the lithium battery.

[0003] After retrieval, the Chinese patent publication number CN220330480U discloses an assembly fixture for a lithium battery shell. The patent includes: a device main body. Specifically, the device main body includes a base, support rods, and a top plate. There are four support rods, and the four support rods are respectively fixed at the four diagonal corners of the top of the base. The top plate is fixed on the top of the four support rods; a lifting mechanism, which is arranged on the device main body and is used to lift the assembly equipment; it also includes: a workbench, which is arranged on the upper side of the device main body and is used to place the lithium battery shell to be assembled on it; a first fixing plate, which is fixed on the top of the workbench and is used to act on the lithium battery shell by abutting; a lifting plate, which is arranged on the device main body. Through the above settings, the device is optimized for semi-automatic operation, thereby reducing the manual labor of workers and then improving the work efficiency. However, in the prior art, due to the limitations of the production technology of the battery shell, when the battery shell is deformed under pressure or the manufacturing accuracy is inaccurate, only using this device for limiting will cause the battery shell to move during the assembly process, affecting the reliability of the assembly, and its practicability needs to be improved. Content of the Utility Model

[0004] The purpose of the utility model is to provide an assembly fixture for a lithium battery shell to solve the above problems.

[0005] The utility model realizes the above purpose through the following technical solutions:

[0006] An assembly jig for a lithium battery shell, comprising a workbench, on which a first fixed box and a second fixed box are fixedly connected. A moving mechanism is arranged on the workbench. The moving mechanism includes a moving box. An adjusting mechanism is arranged between the first fixed box and the moving box. A pressing mechanism is arranged on the workbench. A number of pressing mechanisms are installed in the first fixed box, the second fixed box and the moving box. The pressing mechanism includes a sealing cavity, which is arranged in the first fixed box, the second fixed box and the moving box. The pressing mechanism includes an installation pipe, which is located in the sealing cavity. A fixed ring is fixedly connected inside the installation pipe. A push rod is slidably connected inside the fixed ring. One end of the push rod is fixedly connected with a push plate, and the other end of the push rod is fixedly connected with a ball hinge support. A connecting seat is hinged on the ball hinge support. A number of abutting heads are fixedly connected to one side of the connecting seat.

[0007] Preferably, the pressing mechanism includes a pressing machine, and the output end of the pressing machine is fixedly connected with a pressing pipe, and the pressing pipe communicates with the sealing cavity inside the first fixed box.

[0008] Preferably, a communicating pipe is fixedly connected inside the first fixed box and the second fixed box, and the communicating pipe is used to connect the sealing cavities inside the first fixed box and the second fixed box. A connecting hose is fixedly connected between the second fixed box and the moving box, and the connecting hose is used to connect the sealing cavities inside the second fixed box and the moving box.

[0009] Preferably, limiting rings are fixedly connected to the sides of the first fixed box, the second fixed box and the moving box. The limiting rings are arranged at the opening positions of one ends of the installation pipes, and the limiting rings are used to limit the retraction positions of the connecting seats. A return spring is installed between the push plate and the fixed ring.

[0010] Preferably, the moving mechanism includes a motor, and the output end of the motor is fixedly connected with a first lead screw. A moving block is threadedly connected to the first lead screw. The moving block is fixedly connected to one side of the moving box, and the moving block is slidably connected to the bottom edge position of the second fixed box.

[0011] Preferably, the adjusting mechanism includes a number of adjusting plates and a moving plate. One side of the adjusting plates is slidably connected to the side of the first fixed box. One side of the adjusting plates connected to the first fixed box is fixedly connected with a sliding rod and a square rod. The sliding rod and the square rod penetrate through the other adjusting plates and the moving plate, and an equidistant spring is sleeved on the sliding rod.

[0012] Preferably, one side of the adjusting plate connected to the first fixed box is fixedly connected with an adjusting block. The adjusting block is slidably connected to the top of the first fixed box. A second lead screw is threadedly connected inside the adjusting block. One end of the second lead screw is rotatably connected with a fixed block, and the fixed block is fixedly connected to the top of the first fixed box.

[0013] Preferably, a cushion block is fixedly connected to the side of the adjusting plate and the moving plate facing the second fixed box.

[0014] The beneficial effects are as follows: A pressurizing mechanism and a pressing mechanism are provided. The setting of the moving box, several adjusting plates and moving plates can adapt to battery casings of different sizes, and fix and assemble their bottoms and sides. At the same time, through the pressing mechanism arranged in the sealing cavity, it effectively solves the problem that in the prior art, the assembly fixture needs to cooperate with components to achieve pressure holding. When the battery casing is deformed under pressure or the manufacturing accuracy is inaccurate, it is easy to have the problems of overpressure holding or insufficient pressure holding.

[0015] The additional technical features and their advantages of the present utility model will be more clearly described in the following description content, or can be understood through the specific practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present utility model, but do not constitute a limitation to the present utility model. In the drawings:

[0017] Figure 1 is the first schematic diagram of an assembly fixture for a lithium battery casing of the present utility model;

[0018] Figure 2 is the second schematic diagram of an assembly fixture for a lithium battery casing of the present utility model;

[0019] Figure 3 is the upper side cross-sectional view of an assembly fixture for a lithium battery casing of the present utility model;

[0020] Figure 4 is the schematic diagram of the moving mechanism of an assembly fixture for a lithium battery casing of the present utility model;

[0021] Figure 5 is the right side cross-sectional view of the No. 2 fixed box of an assembly fixture for a lithium battery casing of the present utility model;

[0022] Figure 6 is the right side schematic diagram of the installation pipe of an assembly fixture for a lithium battery casing of the present utility model;

[0023] Figure 7 is the position schematic diagram of the installation pipe and the abutting head of an assembly fixture for a lithium battery casing of the present utility model;

[0024] Figure 8 is the internal schematic diagram of the installation pipe of an assembly fixture for a lithium battery casing of the present utility model;

[0025] Figure 9 is the cooperation schematic diagram of the push rod, spherical hinge support and connecting seat of an assembly fixture for a lithium battery casing of the present utility model.

[0026] The description of the reference numerals in the drawings is as follows: 101, workbench; 102, first fixed box; 103, second fixed box; 104, bracket; 201, motor; 202, first lead screw; 203, moving block; 204, moving box; 301, adjusting plate; 302, moving plate; 303, cushion block; 304, slide bar; 305, equidistant spring; 306, square rod; 307, adjusting block; 308, second lead screw; 309, fixed block; 401, press; 402, pressure pipe; 403, sealing cavity; 404, connecting pipe; 405, connecting hose; 501, installation pipe; 502, fixing ring; 503, push rod; 504, push plate; 505, spherical hinge support; 506, connecting seat; 507, abutting joint; 508, limiting ring; 509, return spring. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0028] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0029] The present invention will be further described below in conjunction with the accompanying drawings:

[0030] As Figure 1 — Figure 9As shown in the figure, an assembly jig for a lithium battery shell includes a workbench 101. A first fixed box 102 and a second fixed box 103 are connected to the workbench 101 by bolts. A bracket 104 is welded to the outside of the second fixed box 103. A moving mechanism is arranged on the workbench 101. The moving mechanism includes a moving box 204. An adjusting mechanism is arranged between the first fixed box 102 and the moving box 204. A pressing mechanism is arranged on the workbench 101. A number of pressing mechanisms are installed in the first fixed box 102, the second fixed box 103 and the moving box 204. The pressing mechanisms are all in the same horizontal plane. The pressing mechanism includes a sealing cavity 403. A certain amount of hydraulic oil is stored in the sealing cavity 403. The sealing cavity 403 is arranged in the first fixed box 102, the second fixed box 103 and the moving box 204. The pressing mechanism includes an installation pipe 501. The installation pipe 501 is in the sealing cavity 403. A fixing ring 502 is welded in the installation pipe 501. A push rod 503 is slidably connected in the fixing ring 502. One end of the push rod 503 is connected to a push plate 504 by bolts. The push plate 504 maintains good sealing with the installation pipe 501 and can slide relatively. The other end of the push rod 503 is connected to a ball hinge support 505 by bolts. A connecting seat 506 is hinged on the ball hinge support 505. A number of abutting heads 507 are glued to one side of the connecting seat 506. The abutting heads 507 have certain elasticity and a large friction coefficient. When the hydraulic oil in the sealing cavity 403 is pressurized, the increased pressure pushes a number of push plates 504 to move. The push plates 504 push the ball hinge support 505 through the push rods 503. The ball hinge support 505 pushes out the connecting seat 506. The abutting heads 507 on the connecting seat 506 abut against the lithium battery shell. The setting of a number of abutting heads 507 can better fit the surface of the battery shell. A number of pressing mechanisms jointly limit the battery shell, effectively avoiding the movement of the battery shell in all directions during assembly.

[0031] In this embodiment, the pressing mechanism includes a pressing machine 401. The output end of the pressing machine 401 is inserted with a pressing pipe 402. The pressing pipe 402 communicates with the sealing cavity 403 in the first fixed box 102.

[0032] In this embodiment, a communicating pipe 404 is connected to the first fixed box 102 and the second fixed box 103 by bolts. The communicating pipe 404 is used to connect the sealing cavities 403 in the first fixed box 102 and the second fixed box 103. A connecting hose 405 is inserted between the second fixed box 103 and the moving box 204. The connecting hose 405 is used to connect the sealing cavities 403 in the second fixed box 103 and the moving box 204. Due to the setting of the sealing cavity 403 and the communicating pipe 404, when the pressing machine 401 pressurizes the sealing cavity 403 in the first fixed box 102, the pressure is conducted to the sealing cavities 403 in the second fixed box 103 and the moving box 204, making the pressures of a number of sealing cavities 403 the same, and realizing the same pressing force of a number of pressing mechanisms.

[0033] In this embodiment, a limiting ring 508 is welded to the sides of the first fixed box 102, the second fixed box 103 and the moving box 204. The limiting ring 508 is arranged at the opening position of one end of the mounting pipe 501. The limiting ring 508 is used to limit the retraction position of the connecting seat 506. A return spring 509 is installed between the push plate 504 and the fixed ring 502. After the battery housing is assembled, the pressurizing effect of the pressurizing machine 401 is released, and the return spring 509 pushes the push plate 504 back to its original position, facilitating the removal of the battery housing.

[0034] In this embodiment, the moving mechanism includes a motor 201. The output end of the motor 201 is connected to a first lead screw 202 through a coupling. A moving block 203 is threadedly connected to the first lead screw 202. The moving block 203 is bolted to one side of the moving box 204. The moving block 203 is slidably connected to the bottom edge position of the second fixed box 103. The motor 201 drives the first lead screw 202 to rotate. The first lead screw 202 drives the moving block 203 to move. The moving block 203 drives the moving box 204 to translate, and at the same time, a part of the abutting head 507 can be blocked, so as to adapt to battery housings of different lengths.

[0035] In this embodiment, the adjusting mechanism includes a plurality of adjusting plates 301 and a moving plate 302. One side of the adjusting plates 301 is slidably connected to the side of the first fixed box 102. One side of the adjusting plates 301 connected to the first fixed box 102 is bolted with a slide rod 304 and a square rod 306. The slide rod 304 and the square rod 306 penetrate through the remaining adjusting plates 301 and the moving plate 302. An equidistant spring 305 is sleeved on the slide rod 304. When the moving box 204 moves, the moving box 204 pushes the moving plate 302. Through the arrangement of the equidistant spring 305, the plurality of adjusting plates 301 move together, so that the distances between the respective adjusting plates 301 and the moving plate 302 are the same, and a good limiting effect can be exerted on the battery housing.

[0036] In this embodiment, one side of the adjusting plates 301 connected to the first fixed box 102 is bolted with an adjusting block 307. The adjusting block 307 is slidably connected to the top of the first fixed box 102. A second lead screw 308 is threadedly connected inside the adjusting block 307. One end of the second lead screw 308 is connected to a fixed block 309 through a bearing. The fixed block 309 is bolted to the top of the first fixed box 102. One side of the adjusting plates 301 and the moving plate 302 facing the second fixed box 103 is bonded with a cushion block 303. By rotating the second lead screw 308, the second lead screw 308 drives the adjusting block 307 to move. The adjusting block 307 pulls the respective adjusting plates 301 and the moving plate 302 to translate through the square rod 306, so that the cushion block 303 fits against one side of the battery case, and then the four sides of the battery housing can be simultaneously contacted and limited, and battery cases of various sizes can be adapted.

[0037] Working principle: When the device is in use, first rotate the second lead screw 308 and the first lead screw 202 to move the adjusting plate 301 away from the second fixed box 103 and the moving box 204 away from the first fixed box 102. Then, place the battery case to be assembled on the workbench 101 and make two adjacent sides contact the first fixed box 102 and the second fixed box 103. At this time, start the motor 201 to drive the first lead screw 202 to rotate. The first lead screw 202 drives the moving block 203 to move, and the moving block 203 drives the moving box 204 to translate. At the same time, block a part of the abutting heads 507 until the moving box 204 contacts one side of the battery case. Then, turn off the motor 201. Next, rotate the second lead screw 308. The second lead screw 308 drives the adjusting block 307 to move. The adjusting block 307 pulls each adjusting plate 301 and the moving plate 302 to translate through the square rod 306, so that the cushion block 303 fits against one side of the battery case, and then the four sides of the battery case can be simultaneously contacted and limited. When the moving box 204 moves, the moving box 204 pushes the moving plate 302. Through the setting of the equidistant spring 305, several adjusting plates 301 move together, so that the distance between each adjusting plate 301 and the moving plate 302 is the same, which can play a good limiting role on the battery case. At this time, the four sides of the battery case are respectively in contact with the first fixed box 102, the second fixed box 103, the moving box 204 and the cushion block 303. However, due to reasons such as the compression deformation of the battery case or inaccurate manufacturing accuracy, the battery case moves during the assembly process, affecting the reliability of the assembly. Turn on the press 401. The press 401 pressurizes the hydraulic oil in the sealing cavity 403 through the pressure pipe 402. Due to the setting of the sealing cavity 403 and the connecting pipe 404, when the press 401 pressurizes the sealing cavity 403 in the first fixed box 102, the pressure is transmitted to the sealing cavity 403 in the second fixed box 103 and the moving box 204, so that the pressure in several sealing cavities 403 is the same. When the hydraulic oil in the sealing cavity 403 is pressurized, the increased pressure pushes several push plates 504 to move. The push plates 504 push the ball hinge support 505 through the push rods 503, and the ball hinge support 505 pushes out the connecting seat 506. The abutting heads 507 on the connecting seat 506 abut against the lithium battery case. The setting of several abutting heads 507 can better fit the surface of the battery case. Several groups of abutting heads 507 jointly limit the battery case, effectively avoiding the movement of the battery case in all directions during assembly and increasing the reliability of the assembly.

[0038] The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A lithium battery housing assembly jig, comprising a workbench (101), characterized in that: A first fixed box (102) and a second fixed box (103) are fixedly connected to the workbench (101); a moving mechanism is provided on the workbench (101); the moving mechanism comprises a moving box (204); an adjusting mechanism is provided on the first fixed box (102) and the moving box (204); a pressurizing mechanism is provided on the workbench (101); and a plurality of tightening mechanisms are installed in the first fixed box (102), the second fixed box (103) and the moving box (204); The pressurizing mechanism comprises a sealing cavity (403), wherein the sealing cavity (403) is arranged in the first fixed box (102), the second fixed box (103) and the movable box (204); the abutting mechanism comprises a mounting tube (501), wherein the mounting tube (501) is located in the sealing cavity (403); a fixing ring (502) is fixedly connected in the mounting tube (501); a push rod (503) is slidably connected in the fixing ring (502); one end of the push rod (503) is fixedly connected to a push plate (504); the other end of the push rod (503) is fixedly connected to a ball joint support (505); a connecting seat (506) is hinged on the ball joint support (505); and a plurality of abutting joints (507) are fixedly connected to one side of the connecting seat (506).

2. The assembly jig for a lithium battery casing according to claim 1, characterized in that: The pressurizing mechanism comprises a pressurizing machine (401), the output end of the pressurizing machine (401) is fixedly connected with a pressurizing pipe (402), and the pressurizing pipe (402) is connected to the sealed cavity (403) in the first fixed box (102).

3. The assembly jig for a lithium battery housing according to claim 1, characterized in that: A connecting pipe (404) is fixedly connected between the first fixed box (102) and the second fixed box (103), and the connecting pipe (404) is used to connect the first fixed box (102) with the sealed cavity (403) in the second fixed box (103). A connecting hose (405) is fixedly connected between the second fixed box (103) and the movable box (204), and the connecting hose (405) is used to connect the sealed cavity (403) in the second fixed box (103) with the movable box (204).

4. The assembly jig for a lithium battery housing according to claim 1, characterized in that: The first fixed box (102), the second fixed box (103) and the side of the movable box (204) are fixedly connected with a limiting ring (508), and the limiting ring (508) is arranged at an opening position at one end of the mounting tube (501). The limiting ring (508) is used to limit the retracted position of the connecting seat (506), and a return spring (509) is installed between the push plate (504) and the fixed ring (502).

5. The assembly jig for a lithium battery housing according to claim 1, characterized in that: The moving mechanism comprises a motor (201), the output end of the motor (201) is fixedly connected to a first screw rod (202), a moving block (203) is threadedly connected to the first screw rod (202), the moving block (203) is fixedly connected to one side of the moving box (204), and the moving block (203) is slidably connected to the bottom edge of the second fixed box (103).

6. The assembly jig for a lithium battery housing according to claim 1, characterized in that: The adjustment mechanism comprises a plurality of adjustment plates (301) and a movable plate (302); the adjustment plate (301) on one side is slidably connected to the side of the first fixed box (102); a sliding rod (304) and a square rod (306) are fixedly connected to one side of the adjustment plate (301) connected to the first fixed box (102); the sliding rod (304) and the square rod (306) penetrate the remaining adjustment plates (301) and the movable plate (302); and an equidistant spring (305) is sleeved on the sliding rod (304).

7. The assembly jig for a lithium battery housing according to claim 6, characterized in that: One side of the adjustment plate (301) connected to the first fixed box (102) is fixedly connected with an adjustment block (307), the adjustment block (307) is slidably connected to the top of the first fixed box (102), the adjustment block (307) is internally threadedly connected with a second screw rod (308), one end of the second screw rod (308) is rotatably connected with a fixed block (309), and the fixed block (309) is fixedly connected to the top of the first fixed box (102).

8. The assembly jig for a lithium battery casing according to claim 6, characterized in that: A cushion block (303) is fixedly connected to the adjusting plate (301) and the movable plate (302) on one side facing the second fixed box (103).

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