Primary battery module vertical welding fixture

Abstract

The utility model provides a primary battery module vertical type welding frock belongs to lithium battery technical field, including mounting bracket, two positioning plates and a plurality of support strips, mounting bracket installs on production station, and the side of mounting bracket forms module installation site, two positioning plates are located above module installation site, and two positioning plates are along the X axle direction interval and are located on mounting bracket for limiting circuit board, two positioning plates all have the freedom along Z axle direction relative to mounting bracket, a plurality of support strips are along Y axle direction interval and are located on the upper portion of positioning plate, and support strip connects two positioning plates for supporting circuit board. The utility model provides a primary battery module vertical type welding frock, simple structure, convenient operation, and the maintenance of production and manufacture and later period is convenient, positioning plate is adjustable along Z axle direction, can adapt to the battery module of different height, thereby can satisfy the positioning demand of different model battery module, and the commonality improves obviously.

Description

Technical Field

[0001] This utility model belongs to the field of lithium battery technology, and more specifically, it relates to a vertical welding fixture for primary battery modules. Background Technology

[0002] A primary battery module is a key component of a battery system, typically assembled from multiple cells connected in series or parallel. Laser welding is commonly used in the production of primary battery modules. Currently, the galvanometers of most laser welding machines are mounted at the top of the equipment, with the laser beam emitting downwards. Therefore, the battery module must be kept upright during welding.

[0003] However, the welding points on a primary battery module are small, and even slight deviations in the position of the pressure feet can cause sparking or even explosions. Therefore, the positioning of the battery module during welding is extremely critical. Thus, a positioning fixture is needed to hold the module in place during welding to improve welding accuracy and work efficiency.

[0004] Conventional positioning fixtures have complex structures and often use them to form a cavity for accommodating battery modules. During welding, these positioning fixtures are only suitable for the same type of battery module, resulting in poor versatility. Utility Model Content

[0005] The purpose of this utility model is to provide a vertical welding fixture for primary battery modules, which aims to solve the problems of complex structure and poor versatility of traditional positioning workpieces.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a vertical welding fixture for a primary battery module, comprising: Mounting bracket, installed on the production station, with one side of the mounting bracket forming a module mounting position; Two positioning plates are located above the module mounting position. The two positioning plates are spaced apart on the mounting frame along the X-axis and are used to limit the circuit board. Both positioning plates have a degree of freedom along the Z-axis relative to the mounting frame. Multiple support bars are spaced apart on the upper part of the positioning plate along the Y-axis direction. The support bars connect two of the positioning plates and are used to support the circuit board.

[0007] In another embodiment of this application, the upper end of the positioning plate is provided with a positioning groove, which is used to install the support bar.

[0008] In another embodiment of this application, the positioning groove is a through groove along the X-axis direction.

[0009] In another embodiment of this application, the upper surface of the support bar is flush with the upper surface of the positioning plate.

[0010] In another embodiment of this application, the two positioning plates are symmetrically arranged, and the length direction of the support bar is perpendicular to the positioning plate.

[0011] In another embodiment of this application, the mounting bracket includes: The base is installed at the production station; A backplate is mounted on the base and extends upward. The positioning plate is mounted on the mounting back plate and extends above the module mounting position.

[0012] In another embodiment of this application, the mounting back plate and the positioning plate are fixed by bolts, and the mounting back plate is provided with a first adjustment hole for connecting the positioning plate. The first adjustment hole is a longitudinal elongated hole.

[0013] In another embodiment of this application, the mounting bracket further includes: The mounting plate is vertically mounted on the base. The mounting back plate is attached to one side of the mounting upright plate, and the mounting back plate and the mounting upright plate are fixed by bolts; the mounting back plate is provided with a second adjustment hole for connecting the mounting upright plate, and the second adjustment hole is a longitudinal elongated hole.

[0014] In another embodiment of this application, there are multiple mounting plates, and the multiple mounting plates are spaced apart along the X-axis direction; Correspondingly, the mounting back plate has multiple sets of the second adjustment holes, and each set of the second adjustment holes corresponds to one of the multiple mounting uprights.

[0015] In another embodiment of this application, the width of the mounting plate gradually increases from top to bottom.

[0016] The advantages of the vertical welding fixture for primary battery modules provided by this utility model are as follows: Compared with the prior art, the vertical welding fixture for primary battery modules of this utility model adopts a combination structure of mounting frame, positioning plate and support bars, which is simple in structure, easy to operate, and convenient for production and subsequent maintenance; the positioning plate is adjustable along the Z-axis to adapt to battery modules of different heights, and with multiple support bars spaced along the Y-axis, it can meet the positioning requirements of different models of battery modules, significantly improving versatility. In addition, the fixture can stably and accurately position the circuit board of the battery module by limiting the positioning plate in the X-axis direction, flexibly adjusting it along the Z-axis direction, and supporting the circuit board in the Y-axis direction. This effectively avoids arcing or even explosion caused by battery module position deviation, improving welding accuracy; stable positioning also reduces rework caused by position problems, improving work efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the structure of the vertical welding fixture for a primary battery module in the working state provided in this embodiment of the utility model; Figure 2 A schematic diagram of the structure of the vertical welding fixture for a primary battery module provided in this embodiment of the utility model; Figure 3 This is a structural schematic diagram of the vertical welding fixture for a primary battery module provided in an embodiment of the present invention from another perspective.

[0019] In the diagram: 1. Battery cell; 2. Base; 3. Mounting plate; 4. Mounting back plate; 5. Positioning plate; 6. Support bar; 7. First adjustment hole; 8. Positioning groove; 9. Second adjustment hole; 10. Circuit board. Detailed Implementation

[0020] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] Please see Figures 1 to 3 The present invention provides a vertical welding fixture for primary battery modules. The vertical welding fixture for primary battery modules includes a mounting frame, two positioning plates 5, and multiple support bars 6. The mounting frame is installed on a production station, with one side forming a module mounting position. The two positioning plates 5 are located above the module mounting position and are spaced apart on the mounting frame along the X-axis, serving to limit the circuit board 10. Both positioning plates 5 have a degree of freedom along the Z-axis relative to the mounting frame. Multiple support bars 6 are spaced apart on the upper part of the positioning plates 5 along the Y-axis, connecting the two positioning plates 5 and supporting the circuit board 10.

[0022] like Figure 1 As shown, the X-axis direction proposed in this application is perpendicular to the Y-axis direction, and the Z-axis direction is vertical. The X-axis direction is the width direction of the mounting bracket, and the Y-axis direction is the front-to-back direction of the mounting bracket. The circuit board 10 can be a PCB board.

[0023] This utility model provides a vertical welding fixture for primary battery modules. The mounting frame is fixed to the production station of the logistics line pallet. The mounting frame supports the positioning plates 5. Two positioning plates 5, located above the module mounting position and spaced apart along the X-axis, limit the circuit board 10 of the battery module in the X-axis direction, preventing the circuit board 10 from shifting in the X-axis direction. Simultaneously, both positioning plates 5 have a degree of freedom along the Z-axis relative to the mounting frame, allowing for flexible adjustment of their position according to the height of different battery module specifications, thus better adapting to battery modules of varying heights. Multiple support bars 6 are spaced apart along the Y-axis above the positioning plates 5 and connect to the two positioning plates 5, providing effective support for the circuit board 10 in the Y-axis direction.

[0024] During welding, firstly, all support bars 6 are removed from the positioning plate 5 to ensure the positioning plate 5 is at the preset height; then, the battery module is placed in the module mounting position; finally, multiple support bars 6 are inserted sequentially through the gap between the circuit board 10 and the cell 1 of the battery module, so that the upper end of the support bar 6 is attached to the lower end surface of the circuit board 10, thus supporting the circuit board 10. During welding, the pressure feet can tightly adhere the tabs to the copper busbars without applying pressure to the cell 1, which would affect battery performance and safety.

[0025] The vertical welding fixture for primary battery modules provided by this utility model, compared with the prior art, adopts a combined structure of mounting bracket, positioning plate 5, and support bars 6. This structure is simple, easy to operate, and facilitates production and subsequent maintenance. The positioning plate 5 is adjustable along the Z-axis to accommodate battery modules of different heights. Combined with multiple support bars 6 spaced along the Y-axis, it can meet the positioning requirements of different battery module models, significantly improving versatility. Furthermore, the fixture, through the positioning plate 5's limiting position in the X-axis direction, flexible adjustment along the Z-axis direction, and the support bars 6's support in the Y-axis direction, can stably and accurately position the circuit board 10 of the battery module. This effectively avoids arcing or even explosions caused by battery module positional deviations, improving welding accuracy. Stable positioning also reduces rework due to positional issues, improving work efficiency.

[0026] Optionally, the mounting bracket has a base 2, which can be fixed to the logistics line pallet by a locking structure such as bolts.

[0027] The mounting bracket and the positioning plate 5 can be movably connected, such as the positioning plate 5 being longitudinally slidably connected to the mounting bracket. A longitudinal adjustment structure can be provided on the mounting bracket, which drives the positioning plate 5 to rise and fall.

[0028] Optionally, the positioning plate 5 is longitudinally slidably connected to the mounting bracket. A longitudinal screw is rotatably mounted on the positioning plate 5, passing through the positioning plate 5 and threadedly engaging with it. When the height of the positioning plate 5 needs to be adjusted, the screw can be rotated, and the positioning plate 5 moves up and down accordingly.

[0029] In some possible embodiments, please refer to Figure 1 , Figure 2 The upper end of the positioning plate 5 is provided with a positioning groove 8, which is used to install the support bar 6.

[0030] When the support bar 6 is assembled, both ends of the support bar 6 are respectively embedded in the corresponding positioning grooves 8 on the upper end of the two positioning plates 5. Under the action of the positioning grooves 8, the support bar 6 is stably installed on the positioning plates 5, preventing the support bar 6 from shifting during the welding process, thereby ensuring the support effect of the support bar 6 on the circuit board 10.

[0031] The positioning grooves 8 can be opened at equal intervals along the Y-axis direction to make the support bars 6 evenly distributed and the lower end of the circuit board 10 evenly stressed.

[0032] The positioning groove 8 makes the installation process of the support bar 6 more convenient. The installation can be completed simply by embedding the support bar 6 into the positioning groove 8. There is no need for complicated adjustment and fixing steps. It can be quickly disassembled and installed, which improves the maintenance efficiency and flexibility of the tooling.

[0033] Optionally, the positioning groove 8 is a through groove along the X-axis direction.

[0034] When the support bar 6 is installed, both ends of the support bar 6 can slide into the corresponding through slots on the two positioning plates 5 along the X-axis direction. That is, after the battery module is positioned, the support bar 6 is inserted into the positioning slot 8 and passes through the gap between the cell 1 and the circuit board 10 along the X-axis direction until the end of the support bar 6 overlaps in the positioning slot 8 on the other positioning plate 5.

[0035] The through-slot design reduces the length requirement for the support bar 6. The through-slot provides a wider installation space for the support bar 6, reducing the length requirement and lowering production and maintenance costs.

[0036] In some possible embodiments, please refer to Figure 2 The upper surface of the support bar 6 is flush with the upper surface of the positioning plate 5.

[0037] The circuit board 10 of the battery module is placed on the support bar 6. Since the upper surface of the support bar 6 is flush with the upper surface of the positioning plate 5, the circuit board 10 can contact both the upper surface of the support bar 6 and the upper surface of the positioning plate 5 simultaneously. The support bar 6 mainly supports the weight of the circuit board 10, while the upper surface of the positioning plate 5 supports the edge of the circuit board 10, preventing the circuit board 10 from deforming due to uneven local stress and ensuring that the circuit board 10 maintains a stable posture during soldering.

[0038] When the upper surface of the support bar 6 is higher than the upper surface of the positioning plate 5, the circuit board 10 will be subjected to downward pressure during welding, which can easily lead to local stress concentration at the edge of the circuit board 10, resulting in damage to the edge of the circuit board 10.

[0039] When the lower end of the support bar 6 is lower than the upper surface of the positioning plate 5, the support bar 6 does not contact the circuit board 10, and the support bar 6 cannot play the role of supporting the circuit board 10. The circuit board 10 will be easily damaged during the soldering process.

[0040] Optionally, a limiting groove is formed on the upper surface of the positioning plate 5, extending to the inner edge of the positioning plate 5. During soldering, the circuit board 10 is placed in the limiting groove, and the circuit board 10 is positioned by the limiting groove to prevent the circuit board 10 from moving along the X-axis and Y-axis directions. At the same time, the upper surface of the support bar 6 is at the same height as the bottom of the limiting groove.

[0041] In some possible embodiments, please refer to Figure 2 Two positioning plates 5 are symmetrically arranged, and the length direction of the support bar 6 is perpendicular to the positioning plate 5.

[0042] Two positioning plates 5 are symmetrically arranged to form two support points, which provide balanced support to the circuit board 10 on both sides, ensuring that the circuit board 10 is subjected to balanced force and has a stable position during the welding process.

[0043] The longitudinal width of the positioning plate 5 gradually decreases from the fixed end to the free end, forming a trapezoidal plate structure. This structure allows the positioning plate 5 to have a larger width near the fixed end, providing a stable support base for the entire positioning plate 5 and ensuring the reliability of its connection with the mounting bracket; while the design of gradually decreasing towards the free end reduces the space occupied by the positioning plate 5 on the side near the battery module.

[0044] That is, the upper surface of the positioning plate 5 is a horizontal surface, and its lower surface is an inclined surface, and it gradually tilts upward from the fixed end of the positioning plate 5 toward the free end of the positioning plate 5.

[0045] When the battery module is installed in the module mounting position, the narrower free end can fit more closely to the side of the battery module. This not only limits the positioning of the circuit board 10 but also prevents the longitudinal width of the positioning plate 5 from being too large and affecting the installation of the battery module, further optimizing the positioning effect of the battery module. At the same time, the trapezoidal plate structure reduces the amount of material used while ensuring strength, thus reducing the overall weight of the tooling.

[0046] In some possible embodiments, please refer to Figure 2 The mounting bracket includes a base 2 and a mounting back plate 4; the base 2 is installed on the production station; the mounting back plate 4 is located on the base 2 and extends upward; the positioning plate 5 is installed on the mounting back plate 4 and extends above the module mounting position.

[0047] Base 2 is installed at the production station, providing a stable bottom support for the entire mounting frame and tooling, ensuring that the tooling will not shift due to vibration or other factors during operation. Base 2 can be fixed to the production station with bolts.

[0048] Specifically, an elongated hole along the Y-axis is made on the base 2, and bolts are passed through the elongated hole on the base 2 to fix it to the production station below.

[0049] The mounting backplate 4 is mounted on the base 2 and extends upwards. Supported by the mounting backplate 4, the positioning plate 5 is stably positioned above the module mounting location, thus limiting the position of the battery module circuit board 10. The base 2, mounting backplate 4, and positioning plate 5 form a stable support and mounting system, ensuring smooth adjustment of the positioning plate 5 in the Z-axis direction and successful positioning of the circuit board 10. This provides a reliable structural foundation for the precise positioning and stable welding of the battery module.

[0050] Optionally, the mounting backplate 4 is fixed to the front edge of the base 2.

[0051] In some possible embodiments, please refer to Figure 3 The mounting back plate 4 and the positioning plate 5 are fixed together by bolts. The mounting back plate 4 has a first adjustment hole 7 for connecting the positioning plate 5. The first adjustment hole 7 is a longitudinal elongated hole.

[0052] The mounting backplate 4 is vertically mounted on the base 2. The upper part of the mounting backplate 4 is provided with a first adjustment hole 7. The first adjustment hole 7 passes through the mounting backplate 4 in the front-to-back direction, and the length direction of the first adjustment hole 7 is longitudinal.

[0053] When adjustment is needed, loosen the bolts, and the positioning plate 5 can move up and down along the length of the first adjustment hole 7; after the positioning plate 5 moves to the preset position, tighten the bolts to firmly fix the positioning plate 5 to the mounting back plate 4. The above adjustment method can ensure that the positioning plate 5 can be accurately positioned according to the needs of battery modules of different specifications, and work together with components such as the support strip 6 to ensure the stability of battery module welding. Moreover, this adjustment structure is simple in structure, easy to operate, and improves the adjustment efficiency of the tooling.

[0054] The aforementioned first adjustment hole 7 provides clear guidance and sufficient adjustment space for the movement of the positioning plate 5 in the Z-axis direction, making the position adjustment of the positioning plate 5 more precise and better adaptable to battery module circuit boards 10 of different heights, further improving the versatility of the tooling.

[0055] The mounting back plate 4 and the positioning plate 5 are fixed by bolts passing through the first adjustment hole 7. After the bolts are tightened, a large clamping force can be generated between the mounting back plate 4 and the positioning plate 5, ensuring that the positioning plate 5 will not be displaced due to vibration or other factors during operation, thus ensuring the stability and reliability of the positioning plate 5 in limiting the circuit board 10.

[0056] The design of the first adjustment hole 7 makes the position adjustment of the positioning plate 5 more convenient, and can cope with the possible size deviations of different batches of battery modules. It enhances the adaptability of the tooling to various situations in actual production and reduces tooling adaptation problems caused by size errors.

[0057] Two first adjustment holes 7 are opened at intervals along the X-axis on the mounting back plate 4. Two positioning plates 5 are respectively installed at the two first adjustment holes 7 and adjusted individually.

[0058] In some possible embodiments, please refer to Figures 1 to 3 The mounting frame also includes a mounting plate 3, which is vertically mounted on the base 2; a mounting back plate 4 is attached to one side of the mounting plate 3, and the mounting back plate 4 and the mounting plate 3 are fixed together by bolts; the mounting back plate 4 is provided with a second adjustment hole 9 for connecting the mounting plate 3, and the second adjustment hole 9 is a longitudinal elongated hole.

[0059] The mounting plate 3 is located behind the mounting back plate 4. The mounting plate 3 is arranged longitudinally, and its lower end is fixedly connected to the base 2. The side of the mounting plate 3 is fixed to the mounting back plate 4 by bolts.

[0060] The mounting plate 3 is a longitudinally arranged plate-like structure with a lower mounting surface and a side mounting surface. The lower mounting surface is attached to the upper end surface of the base 2, and a lower mounting hole is provided on the lower mounting surface. During installation, bolts pass through the base 2 from bottom to top and connect and fix it to the lower mounting hole, locking the mounting plate 3 onto the lower mounting surface. Correspondingly, there are at least two lower mounting holes. The mounting plate 3 is connected to the base 2 by at least two spaced bolts to ensure the stability of the mounting plate 3. Furthermore, multiple lower mounting holes can be spaced apart along the length of the mounting plate 3.

[0061] The side mounting surface is located on the mounting plate 3 facing the module mounting position, and is flush with the side of the base 2. A transverse side mounting hole is provided on the side mounting surface, extending from front to back. During installation, the mounting back plate 4 is attached to the side mounting surface. The second adjustment hole 9 on the mounting back plate 4 corresponds to and communicates with the side mounting hole. A bolt is passed through the second adjustment hole 9 from front to back and inserted into the side mounting hole, pressing the mounting back plate 4 against the side mounting surface.

[0062] The length of the second adjustment hole 9 on the mounting back plate 4 is greater than the length of the side mounting hole. The design of the second adjustment hole 9 makes the position adjustment of the mounting back plate 4 more convenient. The second adjustment hole 9, in conjunction with the first adjustment hole 7, allows for the individual adjustment of the mounting back plate 4 and the positioning plate 5. It also allows for the synergistic effect of the two to increase the longitudinal adjustment range, thereby enhancing the adaptability of the tooling to various situations in actual production.

[0063] Multiple side mounting holes can be provided on the same mounting plate 3, with adjacent side mounting holes spaced apart along the height direction. A second adjustment hole 9 corresponding to each side mounting hole is provided on the mounting back plate 4.

[0064] Optionally, there are multiple mounting plates 3, which are spaced apart along the X-axis; correspondingly, the mounting back plate 4 has multiple sets of second adjustment holes 9, which correspond one-to-one with the multiple mounting plates 3.

[0065] When there are two mounting plates 3, the mounting back plate 4 has two sets of second adjustment holes 9. Each set has two longitudinally spaced second adjustment holes 9.

[0066] Optionally, the width of the mounting plate 3 is in the front-to-back direction, and the width of the mounting plate 3 gradually increases from top to bottom, forming a trapezoidal plate structure. The trapezoidal shape of the mounting plate 3 increases its contact area with the base 2, thereby increasing the stability of the mounting plate 3.

[0067] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vertical welding fixture for primary battery modules, characterized in that, include: Mounting bracket, installed on the production station, with one side of the mounting bracket forming a module mounting position; Two positioning plates (5) are located above the module mounting position. The two positioning plates (5) are spaced apart on the mounting frame along the X-axis direction to limit the circuit board (10). The two positioning plates (5) have a degree of freedom along the Z-axis direction relative to the mounting frame. Multiple support bars (6) are spaced apart on the upper part of the positioning plate (5) along the Y-axis direction. The support bars (6) connect two positioning plates (5) and are used to support the circuit board (10).

2. The vertical welding fixture for primary battery modules as described in claim 1, characterized in that, The upper end of the positioning plate (5) is provided with a positioning groove (8), which is used to install the support bar (6).

3. The vertical welding fixture for primary battery modules as described in claim 2, characterized in that, The positioning groove (8) is a through groove along the X-axis direction.

4. The vertical welding fixture for primary battery modules as described in claim 1, characterized in that, The upper surface of the support bar (6) is flush with the upper surface of the positioning plate (5).

5. The vertical welding fixture for primary battery modules as described in claim 1, characterized in that, The two positioning plates (5) are symmetrically arranged, and the length direction of the support bar (6) is perpendicular to the positioning plate (5).

6. The vertical welding fixture for primary battery modules as described in claim 1, characterized in that, The mounting bracket includes: The base (2) is installed on the production station; A backplate (4) is mounted on the base (2) and extends upward; The positioning plate (5) is mounted on the mounting back plate (4) and extends above the module mounting position.

7. The vertical welding fixture for primary battery modules as described in claim 6, characterized in that, The mounting back plate (4) and the positioning plate (5) are fixed together by bolts. The mounting back plate (4) has a first adjustment hole (7) for connecting the positioning plate (5). The first adjustment hole (7) is a longitudinal elongated hole.

8. The vertical welding fixture for primary battery modules as described in claim 6, characterized in that, The mounting bracket also includes: The mounting plate (3) is vertically mounted on the base (2); The mounting back plate (4) is attached to one side of the mounting upright plate (3), and the mounting back plate (4) and the mounting upright plate (3) are fixed by bolts; the mounting back plate (4) is provided with a second adjustment hole (9) for connecting the mounting upright plate (3), and the second adjustment hole (9) is a longitudinal elongated hole.

9. The vertical welding fixture for primary battery modules as described in claim 8, characterized in that, There are multiple mounting plates (3), and the multiple mounting plates (3) are spaced apart along the X-axis direction; Correspondingly, the mounting back plate (4) has multiple sets of the second adjustment holes (9), and the multiple sets of the second adjustment holes (9) correspond one-to-one with the multiple mounting uprights (3).

10. The vertical welding fixture for a primary battery module as described in claim 8, characterized in that, The width of the mounting plate (3) gradually increases from top to bottom.

Images