Battery welding positioning device

Abstract

The utility model discloses a battery welding and positioning device, which relates to the technical field of battery processing, and comprises a battery cell clamping and positioning component, a welding support plate and a module carriage, a fixed mechanism and a movable mechanism are arranged above a tool bottom plate, and the fixed mechanism comprises a side edge fixed vertical plate and an end face fixed vertical plate; wherein the side edge fixing vertical plate and the end face fixing vertical plate are used for fixing and limiting the vertical side edges of the two sides of the battery module. The welding support plate can be inserted from the gap between the side edge movable vertical plate and the battery module, the PCB can be supported on the welding support plate, the welding support plate is provided with the groove with the size similar to that of the PCB, the PCB can be positioned, the side edge fixed vertical plate and the side edge movable vertical plate are both provided with the height adjusting blocks, and the height adjusting blocks can be used for adjusting the height of the PCB. The position of the welding supporting plate is adjusted through the height adjusting block, the welding positioning precision and the PCB supporting performance are improved, the operation burden of workers is relieved, the welding reject ratio is reduced, and the battery quality is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of battery processing, in particular to a battery welding positioning device. BACKGROUND

[0002] The soft package sodium battery PACK technology is to assemble a plurality of soft package battery cells in series and parallel to form a battery pack to meet the voltage and capacity requirements of different devices. In series, the positive electrode of a battery cell is connected to the negative electrode of the next battery cell to increase the total voltage of the battery pack. In parallel, the positive electrodes of a plurality of battery cells are connected to each other, and the negative electrodes are connected to each other to increase the total capacity of the battery pack. The production process of the PACK is subject to various technical constraints, including but not limited to mechanical structure strength, battery cell stacking uniformity, and welding strength. Soft package batteries are relatively soft and have poor impact resistance, scratch resistance, and wear resistance. Therefore, a firm structure design is required during the PACK process to protect the batteries from vibration, impact, and scratching. The welding process requires a certain amount of pre-pressure to ensure the adhesion of the two tabs and the connecting piece. In addition, there are high requirements for the position accuracy of welding. If the welding is off-center, it may cause virtual welding, overwelding, and delamination.

[0003] In the automated PACK laser welding process, there are high requirements for the uniformity of the battery cell stack, the accuracy of the welding position, and the adhesion of the tab and the connecting piece. Generally, fixtures are used to position and limit the battery and the PCB board, and a hollow copper block is used for pre-pressing at the welding position. However, if the pressure is too high, the PCB board may sink, the focal length of the welding laser may deviate from the welding point, and poor welding may occur. Therefore, we propose a battery welding positioning device. SUMMARY

[0004] (I) Technical problems solved

[0005] To overcome the shortcomings of the prior art, the utility model provides a battery welding positioning device to solve the technical problem of rapid welding positioning.

[0006] (II) Technical solutions

[0007] To achieve the above purpose, the utility model realizes the following technical solutions:

[0008] A battery welding positioning device, comprising a battery module,

[0009] The battery module is supported by the module drag plate. The battery module is fixed and clamped by the cell clamping and positioning assembly around the side edge. The welding support plate is fixed and installed on the cell clamping and positioning assembly by bolts to fix the top of the battery module, achieving stable fixation of the battery module around.

[0010] Preferably, the battery cell clamping positioning assembly comprises a tray, and the tool base plate is fixed on the tray originally of the welding flow line, and is positioned and locked by a positioning pin hole and a screw, so that the whole battery is moved to realize movement adjustment for subsequent welding.

[0011] Preferably, a fixing mechanism and a movable mechanism are arranged above the tool base plate,

[0012] The fixing mechanism comprises side edge fixing vertical plates and end face fixing vertical plates, wherein the side edge fixing vertical plates and the end face fixing vertical plates are used to fix and limit the two vertical sides of the battery module.

[0013] Preferably, the movable mechanism comprises two groups of sliding clamping blocks, the sliding block comprises an X-axis clamping assembly and a Y-axis clamping assembly, the X-axis clamping assembly comprises an end face clamping elbow clamp seat, the end face clamping elbow clamp seat is fixedly installed on the tool base plate through a bolt, a groove is arranged at the upper end of the end face clamping elbow clamp seat, an elbow clamp fixing plate is clamped and installed through the groove, limit blocks are arranged at both ends of the elbow clamp fixing plate, the elbow clamp fixing plate is fixed on the upper end of the end face clamping elbow clamp seat through the limit blocks, an end face elbow clamp is arranged in the middle of the elbow clamp fixing plate, the end face elbow clamp is a group of movable pressure rods, a pressing block is arranged at the end of the pressure rod, the position of the pressing block is adjusted through a handle, so that the clamping position and the clamping force are adjusted, the pressing block is a circular plate structure and is in contact with the opposite side of the end face fixing vertical plate of the battery module, the contact area is increased, and clamping in the X-axis direction is realized.

[0014] Preferably, the Y-axis clamping assembly comprises a side edge clamping elbow clamp seat, the side edge clamping elbow clamp seat is fixedly installed on the tool base plate through a bolt, a side edge elbow clamp is arranged in the middle of the side edge clamping elbow clamp seat, the basic structure of the side edge elbow clamp is similar to that of the end face elbow clamp, a side edge movable vertical plate is arranged at the end of the side edge clamping elbow clamp seat, the side edge movable vertical plate is used to push and clamp the side edge of the battery module corresponding to the side edge fixing vertical plate, the side edge movable vertical plate is pushed and pressed through the side edge clamping elbow clamp seat, the Y-axis clamping assembly further comprises a guide assembly, the guide assembly comprises a sliding rail and a connecting piece, the sliding rail is fixedly installed in the Y-axis direction of the tool base plate, the connecting piece is slidably installed above the sliding rail, a movable side reinforcing rib plate is fixedly installed at the upper end of the connecting piece, the movable side reinforcing rib plate provides support force to prevent the side edge movable vertical plate from being deformed under pressure, the movable side reinforcing rib plate is fixedly installed outside the side edge movable vertical plate, the movement and clamping action of the side edge elbow clamp on the side edge movable vertical plate is guided through the sliding of the connecting piece outside the sliding rail, and the precision of the clamping action is improved.

[0015] Preferably, the battery module is composed of a PCB plate, a battery cell, protective foam and adhesive tape, the adhesive tape is used to combine a plurality of battery cells, the protective foam is arranged on both sides of the battery cell and is used to buffer and protect the battery cell, the PCB plate is fixedly installed at the upper end of the battery cell, and a notched groove is formed between the PCB plate and the battery cell.

[0016] Preferably, the welding support plate adopts a gear shaping structure, and the welding support plate corresponds to the corresponding cell size groove, wherein the PCB plate structure is made of an insulating, wear-resistant and high-temperature-resistant material, and the welding support plate is inserted into the gap between the side movable stand plate and the battery module, the PCB plate is supported on the welding support plate, the welding support plate has a groove with a size similar to that of the PCB plate, the position of the PCB plate is positioned, the side fixed stand plate and the side movable stand plate are both provided with height adjusting blocks, and the position of the welding support plate is adjusted through the height adjusting blocks.

[0017] (Three) beneficial effects

[0018] The welding support plate can be inserted from the side movable stand plate and the gap in the middle of the battery module, the PCB plate can be supported on the welding support plate, the welding support plate has a groove with a size similar to that of the PCB plate, the position of the PCB plate is positioned, the side fixed stand plate and the side movable stand plate are both provided with height adjusting blocks, and the position of the welding support plate is adjusted through the height adjusting blocks.

[0019] The module drag plate can drag the battery module out of the cell clamping positioning assembly along the groove in the tooling bottom plate, the present application is suitable for the characteristics of large and heavy sodium battery module, and the method of dragging the battery out of the tooling is adopted in combination with the process of winding the module periphery with adhesive tape after welding, so that the module is prevented from being taken out from the narrow space in the tooling by manual or mechanical operation, and the module and the tooling are prevented from being damaged.

[0020] The present application improves the welding positioning precision and the supportability of the PCB plate, reduces the operation burden of employees, reduces the welding defect rate, and ensures the quality of the battery. BRIEF DESCRIPTION OF DRAWINGS

[0021] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application, and the content of the specification can be implemented, the following is a detailed description of the preferred embodiment of the present application combined with the drawings.

[0022] Figure 1 The overall structure of the battery welding positioning device of the present application Figure 1 ;

[0023] Figure 2 The overall structure of the battery welding positioning device of the present application Figure 2 ;

[0024] Figure 3 The overall structure of the battery welding positioning device of the present application Figure 2 The exploded view of the battery welding positioning device of the present application

[0025] Figure 4 The exploded view of the battery welding positioning device of the present application

[0026] Figure 5 The structure diagram of the battery module in the battery welding positioning device of the present application

[0027] Figure 6 The utility model discloses a battery welding positioning device's structural drawing of welding support plate.

[0028] Legend: 1, cell clamping and positioning assembly; 2, welding support plate; 3, module drag plate; 4, tool base plate; 5, side edge clamping elbow clamp seat; 6, end face clamping elbow clamp seat; 7, side edge fixed vertical plate; 8, end face fixed vertical plate; 9, side edge movable vertical plate; 10, side edge elbow clamp; 11, slide rail; 12, movable side reinforcing rib plate; 13, connecting piece; 14, end face elbow clamp; 15, elbow clamp fixed plate; 16, limit block; 17, pressing block; 18, tray; 19, height adjusting block; 20, battery module; 21, PCB board; 22, cell; 23, protective bubble cotton; 24, adhesive tape. DETAILED DESCRIPTION

[0029] The battery welding positioning device provided in the application embodiment solves the problems of battery welding positioning and clamping in the prior art, the welding support plate can be inserted from the gap between the side edge movable vertical plate and the battery module, the PCB board can be supported on the welding support plate, the welding support plate has a groove with a size similar to that of the PCB board, and the position of the PCB board can be positioned.

[0030] Embodiment 1

[0031] The technical solution in the application embodiment is to solve the above problems, and the general idea is as follows:

[0032] As shown in Figures 1-4 In view of the problems in the prior art, the utility model provides a battery welding positioning device, which comprises a battery module 20,

[0033] The cell clamping and positioning assembly 1, the welding support plate 2 and the module drag plate 3, wherein the module drag plate 3 is supported on the battery module 20, wherein the cell clamping and positioning assembly 1 is used for fixing and clamping the four side edges of the battery module 20, the welding support plate 2 is fixedly installed on the cell clamping and positioning assembly 1 by means of bolts to fix the top of the battery module 20, and the stability of the stable fixation of the four sides of the battery module 20 is realized.

[0034] The cell clamping and positioning assembly 1 comprises a tray 18, the tool base plate 4 is fixed on the tray 18 of the welding logistics line originally, is positioned and locked through a positioning pin hole and a screw, the whole battery is moved to realize the movement adjustment for subsequent welding,

[0035] The tool base plate 4 is provided with a fixed mechanism and a movable mechanism above,

[0036] The fixing mechanism includes side edge fixing vertical plate 7 and end face fixing vertical plate 8, wherein the side edge fixing vertical plate 7 and the end face fixing vertical plate 8 are used to fix and limit the vertical side edges of the battery module 20 on both sides,

[0037] The moving mechanism includes two groups of sliding clamping blocks, the sliding blocks include X-axis clamping assembly and Y-axis clamping assembly, the X-axis clamping assembly includes end face clamping elbow clamp seat 6, the end face clamping elbow clamp seat 6 is fixedly installed above the tool base plate 4 through bolts, the upper end of the end face clamping elbow clamp seat 6 is provided with a groove, an elbow clamp fixing plate 15 is clamped and installed through the groove, the two ends of the elbow clamp fixing plate 15 are provided with limiting blocks 16, the elbow clamp fixing plate 15 is fixed on the upper end of the end face clamping elbow clamp seat 6 through the limiting blocks 16, the middle part of the elbow clamp fixing plate 15 is provided with an end face elbow clamp 14, the end face elbow clamp 14 is a group of movable pressure rod structures, the end of the pressure rod is provided with a pressing block 17, the position of the pressing block 17 is adjusted through a handle, so as to realize the adjustment of the clamping position and the clamping force, the pressing block 17 is a circular plate structure and contacts the opposite side of the end face fixing vertical plate 8 of the battery module 20, the contact area is increased, so as to realize the clamping in the X-axis direction.

[0038] The Y-axis clamping assembly includes a side edge clamping elbow clamp seat 5, the side edge clamping elbow clamp seat 5 is fixedly installed above the tool base plate 4 through bolts, the middle part of the side edge clamping elbow clamp seat 5 is provided with a side edge elbow clamp 10, the basic structure of the side edge elbow clamp 10 is similar to that of the end face elbow clamp 14, the end of the side edge clamping elbow clamp seat 5 is provided with a side edge movable vertical plate 9, the side edge movable vertical plate 9 is used to push and clamp the side edge of the corresponding battery module 20 of the side edge fixing vertical plate 7, the side edge movable vertical plate 9 is pushed and pressed through the side edge clamping elbow clamp seat 5, the Y-axis clamping assembly further includes a guide assembly, the guide assembly includes a sliding rail 11 and a connecting piece 13, the sliding rail 11 is fixedly installed in the Y-axis direction of the tool base plate 4, the connecting piece 13 is slidably installed above the sliding rail 11, the upper end of the connecting piece 13 is fixedly installed with a movable side reinforcing rib plate 12, the movable side reinforcing rib plate 12 provides support force to prevent the side edge movable vertical plate 9 from being deformed under pressure, the movable side reinforcing rib plate 12 is fixedly installed outside the side edge movable vertical plate 9, the movement and clamping action of the side edge elbow clamp 10 to the side edge movable vertical plate 9 is guided through the sliding of the connecting piece 13 outside the sliding rail 11, the precision of the clamping action is improved.

[0039] As shown in Figure 5 The battery module 20 is composed of a PCB board 21, a battery cell 22, a protective foam 23 and a tape 24, wherein the tape 24 is used to combine a plurality of battery cells 22, the protective foam 23 is arranged on both sides of the battery cell 22, the battery cell 22 is protected and buffered through the protective foam 23, the PCB board 21 is fixedly installed at the upper end of the battery cell 22, and a recessed groove is formed between the PCB board 21 and the battery cell 22.

[0040] As Figure 6 shown, the welding support plate 2 adopts a gear shaping structure, and the welding support plate 2 corresponds to the size groove of the corresponding battery cell 22, wherein the PCB plate 21 structure is made of an insulating, wear-resistant and high-temperature-resistant material, and the welding support plate 2 is increased in contact area through the gear shaping of the welding support plate 2 and the size groove of the battery cell 22, so as to play a positioning and supporting role in welding the PCB plate 21 of the module.

[0041] In use, the welding support plate 2 can be inserted from the gap between the side movable vertical plate 9 and the battery module 20, the PCB plate 21 can be supported on the welding support plate 2, the welding support plate 2 has a groove with a size similar to that of the PCB plate 21, the position of the PCB plate 21 can be positioned, and the side fixed vertical plate 7 and the side movable vertical plate 9 are both provided with a height adjusting block 19, and the position of the welding support plate 2 is adjusted through the height adjusting block 19.

[0042] The module drag plate 3 can drag the battery module 20 out of the groove of the tool bottom plate 4 from the battery cell clamping and positioning assembly 1, the patent is combined with the process of winding the module periphery with adhesive tape after welding, and the method of dragging the battery out of the tool is adopted, so as to avoid that the module is taken out from the narrow space in the tool by manual or mechanical operation, and the module damage and tool damage are prevented.

[0043] The patent improves the welding positioning precision and the supporting property of the PCB plate 21, reduces the operation burden of employees, reduces the welding failure rate, and ensures the battery quality.

[0044] The technical scheme of the patent realizes the production and manufacturing of the sodium battery soft package PACK size parameter and the process, replaces the low-efficiency production mode of manual soldering with the high-efficiency and streamlined laser welding mode, improves the welding yield through the protection, support and positioning of the welding tool on the module, and ensures the battery quality.

[0045] Finally, it should be noted that: obviously, the above embodiments are only examples for clearly illustrating the utility model, and are not limited to the implementation mode. For ordinary skilled persons in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to enumerate all the implementation modes. The obvious changes or variations derived therefrom are still within the protection scope of the utility model.

Claims

1. A battery welding positioning device, comprising a tool base plate (4) and a battery module (20), characterized in that: a cell clamping positioning assembly (1), a welding support plate (2) and a module drag plate (3), wherein the module drag plate (3) supports the battery module (20), wherein the cell clamping positioning assembly (1) fixes and clamps the four sides of the battery module (20), and the welding support plate (2) is fixedly installed on the cell clamping positioning assembly (1) to fix the top of the battery module (20). A fixing mechanism and a movable mechanism are arranged above the tool base plate (4), 2. A battery welding fixture as defined in claim 1, wherein: The fixing mechanism comprises side edge fixing vertical plates (7) and end face fixing vertical plates (8), wherein the side edge fixing vertical plates (7) and the end face fixing vertical plates (8) fix and limit the vertical sides of the battery module (20) on both sides. The movable mechanism comprises two groups of sliding clamping blocks, the sliding blocks comprise X-axis clamping assemblies and Y-axis clamping assemblies, the X-axis clamping assemblies comprise end face clamping elbow clamping seats (6), the end face clamping elbow clamping seats (6) are fixedly installed above the tool base plate (4), recesses are arranged on the upper ends of the end face clamping elbow clamping seats (6), elbow clamping fixing plates (15) are connected and installed in the recesses, limit blocks (16) are arranged at the two ends of the elbow clamping fixing plates (15), and the elbow clamping fixing plates (15) are fixed on the upper ends of the end face clamping elbow clamping seats (6) through the limit blocks (16).

3. A battery welding fixture as defined in claim 2, wherein: End face elbows (14) are arranged in the middle of the elbow clamping fixing plates (15), the end face elbows (14) are a group of movable pressure rod structures, pressure blocks (17) are arranged at the ends of the pressure rods, and the pressure blocks (17) are circular plate structures and contact the opposite sides of the end face fixing vertical plates (8) of the battery module (20).

4. A battery welding fixture as defined in claim 3, wherein: The Y-axis clamping assemblies comprise side edge clamping elbow clamping seats (5), the side edge clamping elbow clamping seats (5) are fixedly installed above the tool base plate (4) through bolts, side edge elbows (10) are arranged in the middle of the side edge clamping elbow clamping seats (5), and the basic structures of the side edge elbows (10) are similar to those of the end face elbows (14).

5. A battery welding fixture as defined in claim 4, wherein: Side edge movable vertical plates (9) are arranged at the ends of the side edge clamping elbow clamping seats (5), and the side edge movable vertical plates (9) push and clamp the side edges of the battery module (20) corresponding to the side edge fixing vertical plates (7).

6. A battery welding fixture as defined in claim 5, wherein: The Y-axis clamping assemblies further comprise a guide assembly, the guide assembly comprises a sliding rail (11) and a connecting piece (13), the sliding rail (11) is fixedly installed in the Y-axis direction of the tool base plate (4), the connecting piece (13) is slidably installed above the sliding rail (11), a movable side reinforcing rib plate (12) is fixedly installed at the upper end of the connecting piece (13), and the movable side reinforcing rib plate (12) is fixedly installed outside the side edge movable vertical plate (9).

7. A battery welding fixture as defined in claim 3, wherein: The cell clamping positioning assembly (1) comprises a tray (18), the tool base plate (4) is fixed on the tray (18) originally arranged in the welding logistics line, and positioning is performed through positioning pin holes and screws.

8. A battery welding fixture as defined in claim 1, wherein: ​ 9. A battery welding fixture as defined in claim 1, wherein: The battery module (20) is composed of a PCB board (21), a battery cell (22), protective foam (23) and adhesive tape (24), the battery cell (22) is provided with protective foam (23) on both sides, the upper end of the battery cell (22) is fixedly provided with a PCB board (21), and a notched groove is formed between the PCB board (21) and the battery cell (22).

10. A battery welding fixture as defined in claim 2, wherein: The welding support plate (2) adopts a notched structure, the welding support plate (2) corresponds to the size notched groove of the corresponding battery cell (22), wherein the PCB board (21) structure, the side fixed stand (7) and the side movable stand (9) are both provided with height adjusting blocks (19).

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