CN219284859U - Battery cell and bus plate welding strength test device - Google Patents

Abstract

The utility model discloses a device for testing the welding strength of an electric core and a confluence plate, which comprises a frame, a fixing seat, a pressing assembly and a testing assembly. The fixing seat is provided with a fixing position for fixing the electric core; the pressing assembly includes a first driving part , a sliding seat and a pressing block, the first driving part drives the sliding seat to move along the Z-axis direction, the pressing block is connected with the sliding seat, and is used to press the battery cell in a fixed position; the test assembly includes a tension detector, a suction cup, a second A moving base, a second moving base and a second driving member, the second driving member is arranged on the frame to drive the first moving base to move along the X axis, the suction cup is arranged on a side of the second moving base close to the electric core, the suction cup Used for absorbing the manifold, the tension detector is connected with the first moving base and the second moving base, and the tension detector is provided with a display area showing the strength of the tension. By setting the tension detector, when the first movable base drives the second movable base to move, the tension data can be directly read through the display area on the tension detector, thereby improving work efficiency.

Description

Battery cell and bus plate welding strength test device

technical field

The utility model relates to the technical field of battery production, in particular to a device for testing the welding strength of a battery cell and a collector plate.

Background technique

At present, the widely used lithium-ion battery is a cylindrical battery processed by a winding manufacturing process. A positive current collector is formed at the positive end of the corresponding cell of the cylindrical battery, and a negative current collector is formed at the negative end. In order to stably guide the current of the positive and negative terminals of the battery cell out of the battery unit, a busbar is welded on the end faces of the positive current collector and the negative current collector. In order to improve the battery life, it is necessary to test the stability of the junction plate welding to distinguish defective products and facilitate subsequent further processing of the battery cells.

The existing technology has the following problems: the traditional tension detection device needs to rely on manual reading and recording of data, which is prone to reading errors, the degree of automation is not high, the labor cost is increased, and the work efficiency is low.

Utility model content

The purpose of this utility model is to provide a device for testing the welding strength of the battery cell and the junction plate, which can directly read and record the data through the tension detector to detect the stability of the junction plate welding, so as to improve the work efficiency.

For reaching above-mentioned purpose, the utility model adopts following technical scheme:

A device for testing the welding strength of a cell and a bus plate is provided, including:

frame;

A fixing seat, the fixing seat is provided with a fixing position for fixing the electric core;

A pressing assembly, the pressing assembly includes a first driving member, a sliding seat and a pressing block, the first driving member is arranged on the frame, and the first driving member is connected with the sliding seat to Driving the sliding seat to move along the Z-axis direction, the pressing block is connected to the sliding seat, and is used to press the battery cell against the fixed position;

A test assembly, the test assembly includes a tension detector, a suction cup, a first moving base, a second moving base and a second driving member, the second driving member is arranged on the frame, and the second driving member is connected to the The first moving seat is connected to drive the first moving seat to move along the X-axis, the suction cup is arranged on a side of the second moving seat close to the battery core, and the suction cup is used to absorb the busbar, The tension detector is connected to the first moving base and the second moving base, and the tension detector is provided with a display area showing the strength of the tension.

As a preferred solution of the battery cell and busbar welding strength testing device, the frame includes a first frame and a second frame, the first frame and the second frame are spaced apart, and the pressing The components are slidably arranged on the first frame, the test components are arranged on the second frame, and the first moving seat and the second moving seat are slidably arranged on the said X-axis direction. on the second rack.

As a preferred solution of the battery cell and busbar welding strength testing device, a first mounting plate is slidably arranged on the second frame, and the first moving seat and the second moving seat are both along the X-axis The direction sliding is arranged on the first installation plate, and an elastic member is arranged between a side of the first installation plate away from the battery core and the second frame.

As a preferred solution of the device for testing the welding strength of the battery core and the busbar, the second frame is protruded with a first protrusion, the first protrusion is spaced from the first mounting plate, and the elastic One end of the piece is connected to the first mounting plate, and the other end is connected to the first protrusion.

As a preferred solution of the device for testing the welding strength of the battery core and the busbar, the pressing block is provided with a first abutment surface close to the side of the battery core, and the first abutment surface is in contact with the side surface of the battery core. Press the sides tight.

As a preferred solution of the device for testing the welding strength of the battery core and the busbar, the section of the battery core is circular, and the first abutting surface is an arc-shaped surface.

As a preferred solution of the test device for the welding strength of the battery cell and the bus plate, the fixing seat is recessed with a mounting groove, the fixing position is formed in the mounting groove, the notch of the mounting groove faces upward, and the The installation slot runs through the fixing seat along a side facing the test assembly, and the battery core is installed in the installation slot.

As a preferred solution of the device for testing the welding strength of the battery cell and the busbar, the fixing seat moves along the Y-axis direction.

As a preferred solution of the device for testing the welding strength of the battery cell and the busbar, the fixing seat is provided with a plurality of installation grooves at intervals along the Y-axis direction, the fixing positions are formed in the installation grooves, and the grooves of the installation grooves are The opening faces upward, and the installation groove runs through the fixing seat along a side facing the test component, and the battery core is installed in the installation groove.

As a preferred solution of the test device for the welding strength of the battery cell and the busbar, the sliding seat is provided with a plurality of pressing blocks corresponding to the installation grooves along the Y-axis direction, and the second frame A plurality of test components are also arranged along the Y-axis direction.

The beneficial effects of the utility model are as follows: a device for testing the welding strength between the electric core and the confluence plate is provided to test the welding strength between the electric core and the confluence plate. The core is pressed against the fixed position; by setting the test component, the suction cup on the second moving seat can absorb the confluence plate, so that the first moving seat can drive the second moving seat to move along the X-axis direction through the tension detector to test the cell The welding strength with the confluence plate, and the tension data can be directly read through the display area on the tension detector, which improves work efficiency and reduces labor costs.

Description of drawings

The utility model will be described in further detail below according to the accompanying drawings and embodiments.

Fig. 1 is a perspective schematic diagram of a first viewing angle of the device for testing the welding strength of a battery cell and a busbar according to an embodiment of the present invention.

FIG. 2 is an enlarged view of A in FIG. 1 .

Fig. 3 is a perspective schematic diagram of a second viewing angle of the battery cell and bus plate welding strength testing device according to the embodiment of the present invention.

FIG. 4 is an enlarged view of B in FIG. 3 .

Fig. 5 is a schematic perspective view of the first viewing angle of the test assembly and the elastic member according to the embodiment of the present invention (showing the first mounting plate and part of the second mounting plate).

Fig. 6 is a perspective view of the second viewing angle of the test assembly and the elastic member according to the embodiment of the present invention (showing the first mounting plate and part of the second mounting plate).

In Figures 1 to 6:

1. Fixing seat; 101. Fixing position; 2. Compression component; 201. First driving member; 202. Slide seat; 2021. Second slide rail; 203. Compression block; 3. Test component; 301. Tensile force detection 302, the first moving seat; 3021, the first bottom plate; 3022, the middle plate; 3023, the first upper plate; 30231, the groove; 303, the second moving seat; 3031, the second bottom plate; 3032, the second upper layer Plate; 304, the second driver; 4, the first frame; 401, the first slide rail; 5, the second frame; 501, the fifth slide rail; 6, the first mounting plate; 601, the third slide rail ; 7, elastic member; 8, the first protrusion; 9, the third driving member; 10, transmission belt; 11, screw rod; 12, the first piston rod; 13, cylinder; 14, the second piston rod; 15, the first Two convex parts; 16, the third convex part; 17, the second mounting plate; 1701, the fourth slide rail;

200, batteries.

Detailed ways

The advantages and features of the present invention and methods for realizing them will become apparent with reference to the embodiments described in detail below in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various forms, and the present embodiment is only provided to complete the disclosure of the present invention and to make those skilled in the art fully understand the present invention. scope, and the invention is limited only by the scope of the claims. The same reference numerals denote the same constituent elements throughout the specification.

Hereinafter, the utility model is described in detail with reference to the accompanying drawings.

As shown in Fig. 1, the utility model provides a kind of welding strength testing device of electric core and confluence plate, tests the welding strength between electric core 200 and confluence plate, and this electric core and confluence plate welding strength testing device comprises frame, fixed Seat 1, compression assembly 2 and test assembly 3, the fixed seat 1 is provided with a fixed position 101 for fixing the battery cell 200, and the battery cell 200 is installed on the fixed seat 1 along its axial direction, which is convenient for the end of the battery cell 200 The welded confluence plate is tested for tensile force. The pressing assembly 2 includes a first driving member 201, a sliding seat 202 and a pressing block 203. The first driving member 201 is arranged on the frame, and the first driving member 201 is connected with the sliding seat 202 to drive the sliding seat 202 along the Z axis. direction, the pressing block 203 is connected with the sliding seat 202, so that the sliding seat 202 drives the pressing block 203 to move along the Z-axis direction, and gradually approaches the battery cell 200, which is used to press the battery cell 200 against the fixed position 101. The tight block 203 and the fixing seat 1 fix the battery cell 200, prevent the battery cell 200 from moving during the welding strength test process between the battery cell 200 and the busbar, improve the accuracy of the welding strength data between the battery cell 200 and the busbar, and improve the work efficiency. efficiency. The test assembly 3 comprises a tension detector 301, a suction cup, a first moving base 302, a second moving base 303 and a second driver 304, the second driving member 304 is arranged on the frame, and the second driving member 304 and the first moving base 302 to drive the first moving base 302 to move along the X-axis direction. The suction cup is arranged on the side of the second moving base 303 close to the battery cell 200. The suction cup is used to absorb the busbar. The tension detector 301 is connected to the first moving base 302 and The second moving seat 303 can drive the second moving seat 303 to move while the first moving seat 302 moves along the X-axis direction, and realize the welding strength between the test cell 200 and the busbar through the tension detector 301, In addition, the tension detector 301 is provided with a display area for displaying the strength of the tension, so that the tension data can be directly read in the display area, and work efficiency is improved and labor costs are reduced.

Specifically, the frame includes a first frame 4 and a second frame 5, the first frame 4 and the second frame 5 are spaced apart, and the pressing assembly 2 is slidably arranged on the first frame 4, so that the slide seat 202 can Slidingly arranged on the first frame 4 along the Z-axis direction, so that the pressing block 203 moves along the direction close to the battery cell 200; the test assembly 3 is arranged on the second frame 5, so that the first moving seat 302 and the second moving seat 302 move The seat 303 is slidably arranged on the second frame 5 along the X-axis direction, so that the first moving seat 302 can drive the second moving seat 303 to move under the action of the second driving member 304, so as to measure the distance between the battery cell 200 and the junction plate. between the welding strength.

As shown in Figures 1 and 2, in this embodiment, the first frame 4 is provided with a first slide rail 401, so that the slide seat 202 can move on the first slide rail 401 under the action of the first driving member 201. To move along the Z axis, the first driving member 201 can be configured as a motor. In the process of testing the welding strength between the battery cell 200 and the busbar, the pressing block 203 is gradually approached to the battery cell 200 , and the battery cell 200 is pressed on the fixing base 1 . The sliding seat 202 is also provided with a second sliding rail 2021 for the pressing block 203 to move, so that the pressing block 203 moves along the Z-axis direction on the second sliding rail 2021 . A second protrusion 15 protrudes from the sliding seat 202. The second protrusion 15 is spaced from the pressing block 203, and the second protrusion 15 is arranged on the upper end of the pressing block 203 along the Z-axis direction. The second protrusion 15 A cylinder 13 is fixed on it, and the second piston rod 14 on the cylinder 13 is connected with the pressing block 203 . During the process of pressing the electric core 200 by the pressing block 203, the cylinder 13 is always in an extended state, and the second piston rod 14 is always located outside the cylinder 13, so that the pressing block 203 can be closer to the electric core 200 in the process. Quickly abut against the battery cell 200, and press the battery cell 200 on the fixing seat 1. When the first driving member 201 drives the sliding seat 202 to move along the Z-axis direction on the second frame 5, the pressing block 203 gradually approaches the battery cell 200 and presses the battery cell 200 on the fixed seat 1. 203 During the process of compressing the battery cell 200, when the pressure is too high, the cylinder 13 contracts, causing the second piston rod 14 to contract into the cylinder 13, and during the process of contracting the cylinder 13, the second piston rod 14 drives the compression block 203 Moving in a direction away from the battery cell 200 can effectively prevent the battery cell 200 from being damaged due to excessive pressure of the pressing block 203 during the process of pressing the battery cell 200 , reducing costs and improving work efficiency.

As shown in FIG. 4 , in this embodiment, the pressing block 203 is provided with a first abutting surface close to the side of the battery cell 200 , and the first abutting surface is pressed against the side surface of the battery cell 200 , so that the battery cell 200 Pressing against the fixed seat 1, the cross-section of the battery cell 200 is circular, and the first abutting surface is an arc-shaped surface, so that the pressing block 203 can better fit the battery cell 200, and the battery cell 200 is pressed against the Fixed seat 1, so as to effectively fix the battery cell 200, fix the setting of the battery cell 200, prevent the battery cell 200 from moving during the welding strength test process of the battery cell 200 and the busbar, and improve the welding strength between the battery cell 200 and the busbar Data accuracy, improve work efficiency.

In other embodiments, on the basis that the pressing block 203 is pressed against the electric core 200, it is not limited to setting the first abutting surface as an arc-shaped surface. When performing welding strength tests of different types of electric cores 200, the second The first abutting surface is set to match the shape of the side of the battery cell 200 . If the welding strength test of the square battery cell 200 is performed, the first abutting surface can be set as a square shape.

As shown in Figure 4, in one embodiment, the fixing base 1 moves along the Y-axis direction, so that the fixing base 1 can move the battery cell 200 along the Y-axis direction, so that the end of the battery cell 200 corresponds to the suction cup, which is convenient for the suction cup to absorb The busbar, so as to test the welding strength between the battery cell 200 and the busbar. The fixing seat 1 is recessed with a mounting groove, and the battery cell 200 is placed in the mounting groove, and a fixing position 101 is formed in the mounting groove, the notch of the mounting groove is upward, and the mounting groove runs through the fixing seat 1 along the side facing the test component 3 , the battery cell 200 is installed in the installation groove, so that the battery cell 200 can be fixed in the installation groove.

Preferably, a plurality of installation slots are arranged at intervals along the Y-axis direction on the fixing base 1 , so that the batteries 200 can be installed in the plurality of installation slots at the same time, which can improve test efficiency and save test time. Optionally, the installation groove can be set as an arc-shaped groove matched with the first abutment surface, so that the installation groove can better fit the battery cell 200, so that the battery cell 200 can be installed in the installation groove and limit the electric current. The core 200 is displaced along the Y-axis direction to improve work efficiency, and the battery core 200 is installed in the installation groove along its axial direction, so that the end of the battery core 200 is close to the test component 3, which is convenient for the suction cup to absorb the confluence plate, thereby performing The welding strength test between the battery cell 200 and the busbar.

In other embodiments, it is not limited to setting the installation groove as an arc-shaped groove. When testing the welding strength of different types of electric cores 200, the installation groove can also be set to a shape that matches the side of the electric core 200. Core 200 welding strength test, the installation groove can be set as a square.

As shown in Figure 3, Figure 5 and Figure 6, in this embodiment, the first mounting plate 6 is slidably arranged on the second frame 5, and the first moving seat 302 and the second moving seat 303 both slide along the X-axis direction Set on the first mounting plate 6, under the action of the second driving member 304, the first moving seat 302 moves, so that the first moving seat 302 drives the second moving seat 303 to move, so that the first moving seat 302 is connected 302 and the tension detector 301 of the second moving base 303 can display the magnitude of the tension. An elastic member 7 is provided between the side of the first mounting plate 6 away from the battery core 200 and the second frame 5 . Specifically, the second frame 5 is protrudingly provided with a first protrusion 8, the first protrusion 8 is spaced from the first mounting plate 6, one end of the elastic member 7 is connected to the first mounting plate 6, and the other end is connected to the first protrusion. 8, so that the first mounting plate 6 has a buffering effect when moving on the second frame 5, so that the suction cup on the second moving seat 303 can prevent the moving speed of the first mounting plate 6 from being too fast during the process of absorbing the busbar. Quickly make the second moving seat 303 have an impulsive force to damage the battery cell 200 and the busbar, effectively reducing the cost.

Preferably, a third convex portion 16 protrudes from the first mounting plate 6, and a second driving member 304 is fixed on the third convex portion 16. The second driving member 304 can be set as a cylinder, and the second driving member 304 is fixed on The first piston rod 12 on the third protrusion 16 and on the second driving member 304 is connected to the first moving seat 302 . During the process of the suction cup absorbing the manifold, the second driving member 304 is always in an extended state, so as to limit the movement of the first moving seat 302 in a direction close to the second driving member 304 . When testing the welding strength of the battery cell 200 and the bus plate, the second driving member 304 shrinks, causing the first piston rod 12 to shrink into the second driving member 304, and drives the first moving seat 302 to move closer to the second driving member 304. At the same time, under the action of the tension detector 301, the first moving seat 302 drives the second moving seat 303 to move, and the second moving seat 303 is adsorbed with a busbar, so that the tension detector 301 can be used for the electric cell 200 and the busbar. The welding strength is detected, so that the tension data can be read in the display area on the tension detector 301. Under the action of the second driving member 304, during the process of driving the first moving seat 302 and the second moving seat 303, if the first piston rod 12 successfully shrinks into the second driving member 304, the cell 200 and the bus plate If it is disconnected, it means that the welding strength between the battery cell 200 and the busbar is low; if the first piston rod 12 does not shrink to the inside of the second driver 304, and the battery cell 200 and the busbar remain in their original state, it means that the battery cell 200 and the busbar Good welding strength. In the process of testing the welding strength of the battery cell 200 and the busbar, the second driver 304 shrinks to judge the stability of the battery cell 200 and the busbar, and whether the first piston rod 12 shrinks to the inside of the second driver 304 Distinguishing defective products with weak welding strength between the battery cell 200 and the busbar is convenient for processing the battery cell 200 in the next step; the tension data can also be read through the display area on the tension detector 301, which improves the strength of the battery cell 200 and the busbar. Work efficiency of welding strength test.

As shown in FIG. 5 and FIG. 6 , a third sliding rail 601 is provided on the first mounting plate 6 , so that the first moving base 302 and the second moving base 303 can move along the X-axis direction on the third sliding rail 601 . The first moving seat 302 and the second moving seat 303 are disposed on the first mounting plate 6 at intervals along the X-axis direction. In one embodiment, the first moving base 302 is arranged in a Z shape, which includes a first bottom plate 3021 moving on the first mounting plate 6 and an intermediate plate 3022 perpendicular to the first bottom plate 3021, and the first moving base 302 It also includes a first upper plate 3023 parallel to the first bottom plate 3021, the first upper plate 3023 is arranged on a side of the middle plate 3022 close to the second moving seat 303, and the first upper plate 3023 is provided with a groove 30231, and The notch of the groove 30231 faces the direction of the second moving seat 303, so that the tension detector 301 is fixed at the bottom of the groove 30231 of the first upper plate 3023, so that the tension detector 301 is installed in the first direction along the X axis. On the upper board 3023. Preferably, protrusions are provided on the opposite groove walls of the groove 30231 along the Y-axis direction, so that the tension detector 301 is clamped on the protrusions, effectively protecting the tension detector 301 . The tension detector 301 can effectively measure the welding strength between the battery cell 200 and the busbar, improve the accuracy of the welding strength data between the battery cell 200 and the busbar, and move the first moving seat 302 in a direction close to the second moving seat 303 At this time, the side of the first upper layer plate 3023 close to the second moving seat 303 can abut against the second moving seat 303, effectively preventing the tension detector 301 from being directly pressed against the second moving seat 303 by the impact force during the moving process. damage, so that the first upper plate 3023 can effectively surround the tension detector 301 for protection.

In other implementations, on the basis of not affecting the tensile strength of the tension detector 301, it is not limited to setting the first moving base 302 in a Z-shape, and the first moving base 302 can also be set in an L-shape, I-shape or other shapes. .

As shown in Figures 5 and 6, in one embodiment, the second moving base 303 is arranged in an L shape, which includes a second bottom plate 3031 moving on the first mounting plate 6 and a second bottom plate 3031 perpendicular to the second bottom plate 3031. Two upper boards 3032, a suction cup is arranged on the side of the second upper board 3032 close to the battery cell 200, so that the second moving seat 303 can gradually approach the battery cell 200 and the suction cup can absorb the busbar; the second upper board 3032 and The tension detector 301 is connected so that one end of the tension detector 301 is connected to the side surface of the second upper layer board 3032 close to the first moving seat 302, and the tension detector 301 can drive the second upper layer board when the first moving seat 302 moves Step 3032 moves the second bottom plate 3031 on the first mounting plate 6 to measure the welding strength between the battery cell 200 and the busbar.

In other embodiments, on the basis of not affecting the suction cup's absorption of the confluence plate and the tensile strength of the tension detector 301, it is not limited to setting the second mobile seat 303 as L-shaped, and the second mobile seat 303 can also be set as I-shaped. or other shapes.

As shown in Fig. 1, Fig. 3 and Fig. 5, in one embodiment, the second frame 5 is provided with a second mounting plate 17, the first protrusion 8 is arranged on the second mounting plate 17, and the second mounting plate 17 is provided with a fourth slide rail 1701 , so that the first mounting plate 6 is slidably disposed on the second mounting plate 17 . The fifth slide rail 501, the third driving member 9 and the screw mandrel 11 are also arranged on the second frame 5, the third driving member 9 can be set as a motor, and one end of the screw mandrel 11 is connected with the motor through the transmission belt 10. Next, the transmission belt 10 drives the screw rod 11 to rotate, and the screw rod 11 is provided with a slider, so that the second mounting plate 17 is fixed on the slider. Under the action of the motor, the second mounting plate 17 moves along the X-axis direction on the fifth slide rail 501 of the second frame 5, so that the first mounting plate 6 also moves along with the second mounting plate 17, and gradually Close to the battery cell 200, so that the suction cup can gradually approach the confluence plate. When the suction cup is in contact with the confluence plate, the air in the suction cup is drawn out, so that the internal air pressure of the suction cup is lower than the external air pressure. Bond strength test between discs.

As shown in Figures 1 and 3, a plurality of pressing blocks 203 corresponding to the installation grooves are provided on the sliding seat 202 along the Y-axis direction, so that all the pressing blocks 203 can move along the Z-axis direction at the same time, and the battery cell 200 Compressed on the fixed seat 1 to improve the efficiency of the fixed cell 200, and the second frame 5 is also provided with a plurality of test components 3 along the Y-axis direction, so that the suction cup can simultaneously absorb the confluence plate and simultaneously fix the All the battery cells 200 on the seat 1 are subjected to a tensile test to improve work efficiency.

In the process of testing the welding strength of the battery cell 200 and the busbar, the first driving member 201 drives the slider 202 to move along the X-axis direction, so that the pressing block 203 gradually approaches the battery cell 200, so that the pressing block 203 can press the battery cell 200 Tightly on the holder 1. At this time, under the action of the third driving member 9, the third mounting plate moves along the X-axis direction, and under the action of the elastic member 7, the third mounting plate has a buffering effect during the movement, effectively preventing the third mounting plate from The battery cell 200 is damaged during the movement; the suction cup absorbs the confluence plate, and after the suction cup absorbs the confluence plate, the second driving member 304 starts, and under the action of the second driving member 304, the first moving seat 302 starts to move along the X-axis direction, under the action of the tension detector 301, the first moving seat 302 drives the second moving seat 303 to move, so that the tension detector 301 can measure the welding strength between the battery cell 200 and the junction plate, and can directly pass the tension The display area on the detector 301 directly reads the tension data.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above embodiments, but can be manufactured in various forms, and those skilled in the art will understand that without changing the technical aspects of the present invention The present invention may be implemented in other specific forms without its spirit or essential features. Therefore, it should be understood that the above-described embodiments are illustrative and not restrictive in all respects.

Claims (10)

1. A device for testing the welding strength of a battery cell and a bus plate, characterized in that it comprises: frame; A fixing seat, the fixing seat is provided with a fixing position for fixing the electric core; A pressing assembly, the pressing assembly includes a first driving member, a sliding seat and a pressing block, the first driving member is arranged on the frame, and the first driving member is connected with the sliding seat to Driving the sliding seat to move along the Z-axis direction, the pressing block is connected to the sliding seat, and is used to press the battery cell against the fixed position; A test assembly, the test assembly includes a tension detector, a suction cup, a first moving base, a second moving base and a second driving member, the second driving member is arranged on the frame, and the second driving member is connected to the The first moving seat is connected to drive the first moving seat to move along the X-axis, the suction cup is arranged on a side of the second moving seat close to the battery core, and the suction cup is used to absorb the busbar, The tension detector is connected to the first moving base and the second moving base, and the tension detector is provided with a display area showing the strength of the tension. 2. The device for testing the welding strength of cells and busbars according to claim 1, wherein the frame includes a first frame and a second frame, and the first frame and the second frame frame interval, the pressing assembly is slidably arranged on the first frame, the test assembly is arranged on the second frame, and the first moving seat and the second moving seat are arranged along the X The shaft direction is slidably arranged on the second frame. 3. The device for testing the welding strength of battery cells and busbars according to claim 2, wherein a first mounting plate is slidably arranged on the second frame, and the first moving seat and the second moving seat The seats are all slidably arranged on the first mounting plate along the X-axis direction, and an elastic member is disposed between a side of the first mounting plate away from the battery core and the second frame. 4. The device for testing the welding strength of the battery cell and the busbar according to claim 3, wherein a first protrusion protrudes from the second frame, and the first protrusion is connected to the first The mounting plates are spaced apart, one end of the elastic member is connected to the first mounting plate, and the other end is connected to the first protrusion. 5. The device for testing the welding strength of the battery cell and the busbar according to claim 1, wherein the pressing block is provided with a first abutment surface close to the side of the battery cell, and the first abutment surface The surface is pressed against the side of the battery core. 6 . The device for testing the welding strength of the battery cell and the busbar according to claim 5 , wherein the section of the battery cell is circular, and the first abutting surface is an arc-shaped surface. 7 . 7. The device for testing the welding strength of battery cells and busbars according to any one of claims 1 to 6, wherein a mounting groove is formed in a depression on the fixing seat, and the fixing position is formed in the mounting groove, The notch of the installation groove faces upward, and the installation groove penetrates through the fixing seat along a side facing the test component, and the electric core is installed in the installation groove. 8. The device for testing the welding strength of the battery cell and the busbar according to any one of claims 1 to 6, wherein the fixing seat moves along the Y-axis direction. 9. The device for testing the welding strength of the battery cell and the bus plate according to any one of claims 2 to 4, wherein a plurality of mounting grooves are arranged at intervals along the Y-axis direction on the fixing seat, and inside the mounting grooves The fixing position is formed, the notch of the installation groove faces upward, and the installation groove penetrates the fixing base along a side facing the test component, and the electric core is installed in the installation groove. 10. The device for testing the welding strength of the battery cell and the busbar according to claim 9, wherein a plurality of pressing blocks corresponding to the installation grooves are arranged on the sliding seat along the Y-axis direction, And the second rack is also provided with a plurality of test components along the Y-axis direction.

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