Manual pre-pressing mechanism for battery cell

Abstract

The utility model provides a manual pre-pressing mechanism for a battery cell, relates to the technical field of battery cell production, and solves the problems that when an existing top cover is welded, the top cover is pre-pressed manually, the pre-pressing is uneven, and the welding quality and the production efficiency are influenced. The pre-pressing device comprises a lifting workbench arranged on a rack in a lifting mode, a lifting assembly arranged on the rack and used for driving the lifting workbench to ascend and descend, a battery cell clamp arranged on the upper surface of one end of the lifting workbench and used for clamping a battery cell to be pre-pressed, and a pressing head arranged above the battery cell clamp and used for pre-pressing the battery cell. The downward pressing assembly is arranged on the rack and used for driving the pressing head to press downwards, and the buffering assembly is arranged on the downward pressing assembly and used for buffering during downward pressing. The pre-pressing device has the beneficial effects that the pressing is milder and more uniform during pressing, the pressing consistency is ensured, the pre-pressing effect is better, and the yield of production is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of battery core production, in particular to a manual pre-pressing mechanism for a battery core. Background Art

[0002] In the current battery production process, there are battery cells that need manual welding. Before the top cover and the aluminum can be fully welded, the aluminum shell and the semi-finished battery cell need to be pre-welded, so that the aluminum shell and the top cover are partially welded first, and then the whole circle is fully welded after welding. During manual pre-welding, the top cover is pressed into the aluminum shell by hand. Due to uneven force on the top cover and operational problems during manual pressing, the consistency of the top cover and the aluminum shell cannot be guaranteed, which affects the welding quality, has low efficiency, and easily causes the battery to be scrapped. Utility Model Content

[0003] The utility model aims to solve the problem that, during the existing top cover welding, the top cover is pre-pressed manually, the pre-pressing is uneven, and the welding quality and production efficiency are affected.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A manual pre-pressing mechanism for battery cells, characterized in that it includes a lifting workbench set on a frame for lifting and lowering, a lifting assembly set on the frame for driving the lifting workbench to lift and lower, a battery cell clamp set on the upper surface of one end of the lifting workbench for clamping the battery cell to be pre-pressed, a pressure head set above the battery cell clamp for pre-pressing the battery cell, a pressing assembly set on the frame for driving the pressure head to press downward, and a buffer assembly set on the pressing assembly for buffering during pressing.

[0006] Further improvements are: the frame includes a lower base and an upper base, the upper base is provided with a support column, a workbench guide rod is connected between the lower base and the upper base, and the lifting workbench is slidable up and down on the workbench guide rod; one end of the lifting workbench extends out of the range of the upper base, and the battery cell clamp is fixedly connected to the upper surface of the lifting workbench extending out of the range of the upper base.

[0007] Further improvement is: the pressing assembly includes a handle with one end hinged to the upper end of the support column, one end of the connecting rod is hinged to the middle of the handle, the other end of the connecting rod is hinged to the upper end of the pressing base, the pressing base is slidably set on the support column, a pressure head fixing seat is connected below the pressing base, the pressure head is detachably mounted on the bottom surface of the pressure head fixing seat by screws and is located above the battery cell clamp, and the buffer assembly is arranged between the pressing base and the pressure head fixing seat.

[0008] A further improvement is that: a guide rail is arranged on one side of the support column facing the pressing base in the vertical direction, and a pressing slider matched with the guide rail is arranged on one side of the pressing base facing the support column, and the pressing slider is slidably arranged on the guide rail.

[0009] A further improvement is that auxiliary springs for providing auxiliary force when pressing down are connected between the side walls of the upper base and the side walls of the support column and the upper end side walls of the pressing base, and the auxiliary springs are nitrogen springs.

[0010] A further improvement is that the buffer assembly includes a downward pressure push block which is lifted and connected below the downward pressure base, a second buffer spring is arranged between the downward pressure push block and the downward pressure base, a first buffer spring is arranged between the pressure head fixing seat and the downward pressure base, the bottom surface of the downward pressure push block extends downward and is connected with a downward pressure push rod, a group of push block guide blocks are symmetrically installed on the pressure head fixing seat, and the two end walls of the downward pressure push block are provided with push block slide grooves corresponding to the push block guide blocks, and the push block guide blocks are arranged on the push block slide grooves.

[0011] A further improvement is that a push block guide rod is fixedly connected to the push block, a push rod guide sleeve corresponding to the push block guide rod is arranged on the push base, and the push block guide rod extends upward and the push base sliding sleeve is arranged in the push rod guide sleeve.

[0012] A further improvement is that a buffer groove is provided inwardly on the upper inner wall of the top block guide block, a buffer slider is provided in the buffer groove for sliding inward toward one end of the downward pressing top block, a third buffer spring is provided between one end of the buffer slider away from the downward pressing top block and the other end of the buffer groove, a buffer top block matching with the buffer slider is provided in the top block groove of the side wall of the downward pressing top block, and the opposing surfaces of the buffer slider and the buffer top block are matching inclined surfaces.

[0013] A further improvement is that the lifting assembly includes a screw rod rotatably connected between the upper base and the lower base, one end of the lifting workbench is fixedly connected to a screw nut matching the screw rod, and the screw nut is threadedly connected to the screw rod; the upper end of the screw rod passes through the upper base and is fixedly connected to a screw rod knob.

[0014] A further improvement is that a through hole is provided on the lifting workbench, a guide sleeve is fixedly connected to the bottom surface of the lifting workbench located at the through hole, the guide sleeve is communicated with the through hole of the lifting workbench, and the workbench guide rod is slidably sleeved in the guide sleeve and the through hole.

[0015] Compared with the existing technology, the above technical solution has the following beneficial effects:

[0016] Compared with pre-pressing the battery cell directly by hand, the pre-pressing of the battery cell by driving the pressure head with the handle can contact the top cover more evenly and press the top cover into the aluminum shell to ensure the consistency of pressing, the pre-pressing effect is better, and the yield rate of production is guaranteed;

[0017] Through the adjustable height of the workbench, the distance between the battery cell and the pressure head can be freely adjusted to meet various processing requirements. A buffer is set when pressing down, which can make the pressure more gentle and uniform, ensuring the pre-pressing effect and avoiding excessive force when pressing down, which may damage the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 2 It is a side structural schematic diagram of the utility model;

[0021] Figure 3 It is a front structural schematic diagram of the utility model;

[0022] Figure 4 This utility model Figure 2 Sectional view along AA direction.

[0023] Explanation of the accompanying drawings: lower base 1, workbench guide rod 11, upper base 2, support column 21, guide rail 22, auxiliary spring 23, lifting workbench 3, guide sleeve 31, screw nut 32, screw 4, screw knob 41, battery cell clamp 5, pressing head 6, handle 7, connecting rod 71, pressing base 72, push rod guide sleeve 721, pressing slider 73, pressing top block 74, pressing push rod 741, push block guide rod 742, buffer top block 743, pressing head fixing seat 75, push block guide block 76, buffer slider 761, third buffer spring 762, buffer limit bolt 763, battery cell 8, first buffer spring 9, second buffer spring 91. DETAILED DESCRIPTION

[0024] See also Figure 1-Figure 4As shown, the technical solution adopted in this specific embodiment is: a manual pre-pressing mechanism for battery cells, including a lifting table 3 set on a frame, a lifting component set on the frame for driving the lifting table 3 to rise and fall, a battery cell clamp 5 set on the upper surface of one end of the lifting table 3 for clamping the battery cell 8 to be pre-pressed, a pressure head 6 set above the battery cell clamp 5 for pre-pressing the battery cell 8, a pressing component set on the frame for driving the pressure head 6 to press down, and a buffer component set on the pressing component for buffering during pressing.

[0025] Among them, the frame includes a lower base 1 and an upper base 2, a support column 21 is arranged on the upper base 2, a workbench guide rod 11 is connected between the lower base 1 and the upper base 2, and the lifting workbench 3 is slidably arranged on the workbench guide rod 11 up and down; one end of the lifting workbench 3 extends out of the range of the upper base 2, and the battery cell clamp 5 is fixedly connected to the upper surface of the lifting workbench 3 extending out of the range of the upper base.

[0026] Among them, the pressing assembly includes a handle 7 with one end hinged to the upper end of the support column 21, one end of the connecting rod 71 is hinged to the middle of the handle 7, and the other end of the connecting rod 71 is hinged to the upper end of the pressing base 72. The pressing base 72 is slidably set on the support column 21, and a pressure head fixing seat 75 is connected below the pressing base 72. The pressure head 6 is detachably mounted on the bottom surface of the pressure head fixing seat 75 by screws and is located above the battery cell clamp 5, and the buffer assembly is arranged between the pressing base 72 and the pressure head fixing seat 75.

[0027] The support column 21 is provided with a guide rail 22 along the vertical direction on one side facing the pressing base 72 , and the pressing base 72 is provided with a pressing slider 73 matched with the guide rail 22 on one side facing the support column 21 , and the pressing slider 73 is slidably arranged on the guide rail 22 .

[0028] Among them, auxiliary springs 23 for providing auxiliary force when pressing down are connected between the side walls of the upper base 2 and the side walls of the support column 21 and the upper end side walls of the pressing base 72, and the auxiliary springs 23 are nitrogen springs.

[0029] Among them, the buffer assembly includes a downward pressure push block 74 which is lifted and connected below the downward pressure base 72, a second buffer spring 91 is arranged between the downward pressure push block 74 and the downward pressure base 72, a first buffer spring 9 is arranged between the pressure head fixing seat 75 and the downward pressure base 72, the bottom surface of the downward pressure push block 74 extends downward and is connected with a downward pressure push rod 741, a group of push block guide blocks 76 are symmetrically installed on the pressure head fixing seat 75, and the two end walls of the downward pressure push block 74 are provided with push block sliding grooves corresponding to the push block guide blocks 76, and the push block guide blocks 76 are arranged on the push block sliding grooves.

[0030] Among them, a push block guide rod 742 is fixedly connected to the push block 74, and a push rod guide sleeve 721 corresponding to the push block guide rod 742 is provided on the push base 72. The push block guide rod 742 extends upward from the push base 72 and is slidably sleeved in the push rod guide sleeve 721.

[0031] Among them, a buffer groove is opened inward on the upper inner wall of the top block guide block 76, and a buffer slider 761 is provided in the buffer groove for sliding toward one end of the downward pressure top block 74, and a third buffer spring 762 is provided between the end of the buffer slider 761 away from the downward pressure top block 74 and the other end of the buffer groove, and the top block groove of the side wall of the downward pressure top block 74 is provided with a buffer top block 743 matched with the buffer slider 761, and the opposing surfaces of the buffer slider 761 and the buffer top block 743 are matched inclined surfaces.

[0032] Among them, the lifting assembly includes a screw rod 4 rotatably connected between the upper base 2 and the lower base 1, one end of the lifting workbench 3 is fixedly connected to a screw rod nut 32 that cooperates with the screw rod 4, and the screw rod nut 32 is threadedly connected to the screw rod 4; the upper end of the screw rod 4 passes through the upper base 2 and is fixedly connected to a screw rod knob 41.

[0033] Among them, a through hole is opened on the lifting workbench 3, and a guide sleeve 31 is fixedly connected to the bottom surface of the lifting workbench 3 located at the through hole. The guide sleeve 31 is connected to the through hole of the lifting workbench 3, and the workbench guide rod 11 is slidably sleeved in the guide sleeve 31 and the through hole.

[0034] The working principle of the utility model is as follows: when in use, the battery cell to be pre-pressed is placed on the battery cell clamp and clamped by the battery cell clamp. Then, a corresponding pressure head is selected and installed on the bottom surface of the pressure head fixing seat. Then, the screw rod is driven to rotate by rotating the screw rod knob to adjust the height of the workbench, and then the distance between the battery cell and the pressure head is adjusted. Then, the pressure base is driven to move down along the support column by pressing the handle down, and then the pressure head fixing seat and the pressure head are driven to move down to apply pressure to the top of the battery cell. During the pressure application, the first buffer spring will be compressed to play the first step of buffering, and the pressing top block will move down along the top block guide block. During this period, the buffer top block on the side wall of the pressing top block will first support the buffer slider, and then the buffer slider will be pressed down and pushed inward. The buffer slider compresses the third buffer spring for further buffering. When the pressing top rod supports the upper end of the pressure head fixing seat, the pressing base moves down relative to the pressing top block, and the second buffer spring is compressed for further buffering. Then, continuous pressure is applied. After the pre-pressing is completed, the handle is lifted, the pressure head is away from the battery cell, and the clamping of the pressure head clamp on the pressure head is released.

[0035] The above shows and describes the basic principle and main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents. Anything not described in detail in the utility model is a well-known technology of those skilled in the art.

Claims

1. A manual pre-stressing mechanism for a battery cell, characterized in that: It includes a lifting workbench set on a frame, a lifting assembly set on the frame for driving the lifting workbench to lift, a battery clamp set on the upper surface of one end of the lifting workbench for clamping the battery to be pre-pressed, a pressing head set above the battery clamp for pre-pressing the battery, a pressing assembly set on the frame for driving the pressing head to press down, and a buffer assembly set on the pressing assembly for buffering during pressing; The frame comprises a lower base and an upper base, the upper base is provided with a support column, a workbench guide rod is connected between the lower base and the upper base, the lifting workbench is slidably arranged on the workbench guide rod up and down; one end of the lifting workbench extends out of the range of the upper base, and the battery clamp is fixedly connected to the upper surface of the lifting workbench extending out of the range of the upper base; The pressing assembly comprises a handle with one end hinged to the upper end of the support column, one end of a connecting rod is hinged to the middle of the handle, the other end of the connecting rod is hinged to the upper end of the pressing base, the pressing base is slidably arranged on the support column, a pressing head fixing seat is connected below the pressing base, the pressing head is detachably mounted on the bottom surface of the pressing head fixing seat by screws and is located above the battery clamp, and the buffer assembly is arranged between the pressing base and the pressing head fixing seat; The buffer assembly includes a downward pressure push block which is lifted and connected below the downward pressure base, a second buffer spring is arranged between the downward pressure push block and the downward pressure base, a first buffer spring is arranged between the pressure head fixing seat and the downward pressure base, the bottom surface of the downward pressure push block extends downward and is connected with a downward pressure push rod, a group of push block guide blocks are symmetrically installed on the pressure head fixing seat, and the two end walls of the downward pressure push block are arranged with push block sliding grooves corresponding to the push block guide blocks, and the push block guide blocks are arranged on the push block sliding grooves.

2. A manual pre-stressing mechanism for battery cells according to claim 1, characterized in that: A guide rail is arranged on one side of the support column facing the pressing base in the vertical direction, and a pressing slider matched with the guide rail is arranged on one side of the pressing base facing the support column, and the pressing slider is slidably arranged on the guide rail.

3. A manual pre-stressing mechanism for battery cells according to claim 1, characterized in that: Auxiliary springs for providing auxiliary force when pressing down are connected between the side walls of the upper base and the side walls of the support column and the upper end side walls of the pressing base, and the auxiliary springs are nitrogen springs.

4. A manual pre-stressing mechanism for battery cells according to claim 1, characterized in that: A push block guide rod is fixedly connected to the push block, a push rod guide sleeve corresponding to the push block guide rod is arranged on the push base, and the push block guide rod extends upward and is slidably sleeved in the push rod guide sleeve of the push base.

5. A manual pre-stressing mechanism for battery cells according to claim 1, characterized in that: A buffer groove is provided inwardly on the inner wall of the upper part of the top block guide block, and a buffer slider is provided in the buffer groove for sliding inward toward one end of the downward pressing top block, a third buffer spring is provided between one end of the buffer slider away from the downward pressing top block and the other end of the buffer groove, and a buffer top block matching with the buffer slider is provided in the top block groove of the side wall of the downward pressing top block, and the opposing surfaces of the buffer slider and the buffer top block are matching inclined surfaces.

6. A manual pre-stressing mechanism for battery cells according to claim 1, characterized in that: The lifting assembly includes a screw rod rotatably connected between an upper base and a lower base, a screw nut matching the screw rod is fixedly connected to one end of the lifting workbench, and the screw nut is threadedly connected to the screw rod; the upper end of the screw rod passes through the upper base and is fixedly connected to a screw rod knob.

7. A manual pre-stressing mechanism for battery cells according to claim 6, characterized in that: The lifting workbench is provided with a through hole, a guide sleeve is fixedly connected to the bottom surface of the lifting workbench located at the through hole, the guide sleeve is communicated with the through hole of the lifting workbench, and the workbench guide rod is slidably sleeved in the guide sleeve and the through hole.

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