Module welding tool and welding device

Abstract

The utility model relates to the technical field of battery modules, and provides a module welding tool and a welding device.The module welding tool comprises a downward pressing part, a transmission part and two driving parts, each driving part comprises a mounting base mounted on a base body of a bearing module and a threaded rod rotationally connected to the mounting base, and the driving parts are arranged on the mounting base; the screw rods are in threaded connection with the pressing part, the transmission part is connected between the two screw rods, and when at least one screw rod is driven to rotate, the two screw rods can synchronously rotate through the transmission part so as to jointly drive the pressing part to press the busbar on the module. According to the module welding tool, the operation time can be shortened, and the welding efficiency can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery module technical field, especially in a kind of module welding tooling. BACKGROUND

[0002] In recent years, with the continuous development of new energy vehicles, battery pack as the power source of new energy battery is widely used in new energy vehicles, and the existing battery pack in the process of production usually needs to be stacked into a battery module by multiple cells, and after combining multiple battery modules, BMS (battery management system), counterweight module and other components are added to form a battery pack.

[0003] And after the cell is stacked into a battery module, the busbar and other components need to be connected together with the electrode pole of the cell by welding, and multiple cells are connected in series or parallel to form the positive and negative poles of the battery module.

[0004] And the welding tooling in the prior art usually uses elbow clamp to press the mounting frame with copper nozzle on the busbar, and the laser of welding equipment is welded on the busbar through the through hole on the copper nozzle. However, the above-mentioned method needs to manually operate the elbow clamp one by one, which is time-consuming and laborious, and is not conducive to improving the welding efficiency. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model aims at providing a module welding tooling to improve the welding efficiency.

[0006] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0007] A module welding tooling, comprising a pressing part, a transmission part and two driving parts;

[0008] Each of the driving parts comprises a mounting seat mounted on the base body of the bearing module, and a screw rod rotatably connected to the mounting seat, and the screw rod is threadedly connected to the pressing part;

[0009] The transmission part is connected between the two screw rods; when at least one of the screw rods is driven to rotate, the two screw rods can be synchronously rotated through the transmission part to jointly drive the pressing part to press the busbar on the module.

[0010] Further, at least one of the mounting seats is provided with a driving part; the driving part comprises a hand wheel rotatably connected to the mounting seat, and a transmission member in transmission connection with the hand wheel and the screw rod.

[0011] Further, a counter on the rotating shaft of the hand wheel is provided, and the counter is used to measure the number of rotations of the hand wheel.

[0012] Further, the lower pressing part comprises a sliding support and a pressing plate; the sliding support is threadedly connected with the two screw rods and is slidably connected with the two mounting seats along the axial direction of the screw rods; the pressing plate is detachably connected below the sliding support and is provided with a copper nozzle for pressing the busbar.

[0013] Further, the mounting seat is provided with a sliding rail along the sliding direction of the sliding support, and the sliding support is provided with a sliding block slidably connected with the sliding rail.

[0014] Further, the sliding support is in the shape of a "U", and the screw rods and the transmission part are arranged inside the opening of the sliding support.

[0015] Further, each mounting seat is provided with a lifting ring.

[0016] Further, a protective cover is fixed between the two mounting seats and covers at least part of the synchronous belt.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] The module welding tool, through the arrangement of the screw rods in the lower pressing part, the transmission part and the driving part, threadedly connects the screw rods with the lower pressing part and connects the transmission part between the two screw rods, can drive one screw rod to rotate to synchronously rotate the two screw rods, so that the lower pressing part can press the busbar on the module for welding, thereby, the operation time can be reduced, and the welding efficiency can be improved.

[0019] Secondly, the driving part is composed of a hand wheel and a transmission part, which is simple in structure and easy to operate, compared with the hand wheel directly connected with the screw rod, the transmission part can absorb part of the vibration and reduce the impact on the screw rod; at the same time, the hand wheel can adjust the rotation speed and force according to the needs of the operator, and the rotation movement of the hand wheel can be accurately transmitted to the screw rod through the transmission part, so that the rotation of the screw rod and the pressing force of the lower pressing part can be accurately controlled.

[0020] Through the arrangement of the counter, the rotation number of the hand wheel can be measured, the rotation angle of the screw rod and the displacement of the lower pressing part can be calculated, so that the operator can accurately control the pressing stroke, ensure the consistency of the pressing depth, and avoid the over-pressing or under-pressing situation.

[0021] Further, the sliding support is threadedly connected with the two screw rods and is connected with the two mounting seats in the axial direction of the screw rods, so that the stability of the sliding support during movement is ensured, and deviation or inclination is avoided, and the precision and reliability of the crimping are improved; meanwhile, the pressing plate is detachably connected with the sliding support, so that subsequent maintenance and replacement are facilitated, and busbar welding of different specifications of modules is facilitated. Through cooperation of the sliding rail and the sliding block, the shaking of the sliding support is reduced, the sliding support is smoothly moved in the predetermined direction, and the stability of the overall structure is improved.

[0022] Further, the sliding support is threadedly connected with the two screw rods and is connected with the two mounting seats in the axial direction of the screw rods, so that the stability of the sliding support during movement is ensured, and deviation or inclination is avoided, and the precision and reliability of the crimping are improved; meanwhile, the pressing plate is detachably connected with the sliding support, so that subsequent maintenance and replacement are facilitated, and busbar welding of different specifications of modules is facilitated. Through cooperation of the sliding rail and the sliding block, the shaking of the sliding support is reduced, the sliding support is smoothly moved in the predetermined direction, and the stability of the overall structure is improved.

[0023] The transmission part is composed of a synchronous wheel and a synchronous belt, has high transmission efficiency, is simple in structure and convenient to design and implement, the combination of the synchronous wheel and the synchronous belt can realize precise synchronous transmission and avoid slippage, so that position and speed control during transmission is more accurate, further, the meshing transmission mode of the synchronous belt and the synchronous wheel reduces vibration and impact, so that operation is more stable. The protective cover is arranged, so that external objects are prevented from colliding with or damaging the synchronous belt, and stable operation between the synchronous belt and the synchronous wheel is ensured.

[0024] Another purpose of the utility model lies in providing a welding device, which is provided with the module welding tool as described above.

[0025] The welding device has the module welding tool, so that the busbar is pressed by a single screw rod, and manual operation of an elbow clamp to press a copper nozzle on the busbar for welding is not needed, and welding efficiency is improved. DRAWINGS

[0026] The drawings that form a part of the utility model are used to provide a further understanding of the utility model, and the illustrative embodiments of the utility model and the description thereof are used to explain the utility model and do not constitute an improper limitation on the utility model. In the drawings:

[0027] Figure 1 The overall structure of the module welding tool is shown in the figure;

[0028] Figure 2 The partial structure of the module welding tool is shown in the figure;

[0029] Figure 3The structure schematic diagram of the driving part is shown in the embodiment of the utility model.

[0030] Mark explanation:

[0031] 1, the lower pressing part, 11, the sliding support, 111, the sliding block, 112, the nut, 113, the avoiding hole, 12, the pressing plate, 121, the copper nozzle,

[0032] 2, the transmission part, 21, the synchronous wheel, 22, the synchronous belt,

[0033] 3, the driving part, 31, the mounting seat, 311, the driving part, 3111, the hand wheel, 31111, the rotating shaft, 3112, the transmission piece, 312, the sliding rail, 313, the hoisting ring, 32, the screw rod,

[0034] 4, the counter,

[0035] 5, the protective cover. Specific implementation

[0036] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0037] In the following description, specific details are set forth such as particular system configurations, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. However, it should be apparent to those skilled in the art that the present application can be practiced without such specific details. In other instances, well-known systems, structures, circuits, and techniques have been not been described in detail in order to avoid obscuring the description of the present application.

[0038] In the description of the utility model, it should be explained that if the terms indicating the orientation or position relationship such as "up", "down", "inner", "outer" appear, it is based on the orientation or position relationship shown in the drawing, and it is only for the convenience of describing the utility model and simplifying the description, and it does not indicate or imply that the indicated device or element must have a specific orientation, a specific orientation and operation, so it cannot be understood as a limitation of the utility model. In addition, if the terms "first", "second" appear, they are also used for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0039] Taking the module welding tool described in the utility model as an example, the orientation words used in the embodiment such as "up, down, left, right, front, back" are defined based on the up-down direction (also called height direction), left-right direction (also called length direction) and front-back direction (also called width direction) in the state shown in the drawing. Figure 1

[0040] ​Further, in the description of the utility model, unless otherwise expressly limited, the terms "mounting", "connecting", "connection" and "connector" should be understood broadly. For example, it can be fixed connection, or detachable connection, or integrally connected, it can be mechanical connection, or electrical connection, it can be directly connected, or indirectly connected through intermediate media, or the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood in combination with specific circumstances.

[0041] The utility model will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0042] Embodiment one

[0043] The embodiment relates to a module welding tool, compared with traditional welding tools, operation time can be reduced, and welding efficiency can be improved.

[0044] As a whole, as shown in Figures 1 to 3 The module welding tool of the embodiment comprises a pressing part 1, a transmission part 2 and two driving parts 3. Each driving part 3 comprises a mounting seat 31 mounted on the base body of the bearing module and a screw rod 32 rotatably connected to the mounting seat 31, and the screw rod 32 is threadedly connected to the pressing part 1.

[0045] Further, the transmission part 2 is connected between the two screw rods 32, when at least one screw rod 32 is driven to rotate, the two screw rods 32 can be synchronously rotated through the transmission part 2 to jointly drive the pressing part 1 to press the busbar on the module.

[0046] At this time, as arranged above, by arranging the screw rod 32, threadedly connecting the screw rod 32 to the pressing part 1 and connecting the transmission part 2 between the two screw rods 32, one screw rod 32 can be driven to rotate, the two screw rods 32 can be synchronously rotated, the pressing part 1 can be driven to press the busbar on the module for welding, thereby, operation time can be reduced, and welding efficiency can be improved.

[0047] It should be noted that the base body in the embodiment is composed of a platform bearing the battery cell and a frame that can move in any horizontal direction, and the mounting seat 31 in the embodiment is mounted on the frame.

[0048] In specific implementation, the lower shell of the battery pack is placed on the platform, the battery module composed of a plurality of stacked battery cells is assembled into the lower shell, then one screw rod 32 is driven to rotate, under the action of the transmission part 2, the two screw rods 32 are synchronously rotated to jointly drive the pressing part 1 to press the busbar on the battery module, and the busbar and the pole of the battery cell are welded.

[0049] Based on the above overall introduction, in this embodiment, as a preferred implementation form, as shown in Figure 3 The driving part 311 is arranged on the mounting seat 31, and the driving part 311 comprises a hand wheel 3111 rotatably connected to the mounting seat 31 and a transmission member 3112 in transmission connection with the hand wheel 3111 and the screw rod 32.

[0050] It can be understood that the driving part 311 is composed of the hand wheel 3111 and the transmission member 3112, which is simple in structure and easy to operate. Compared with the direct connection of the hand wheel 3111 and the screw rod 32, the transmission member 3112 can absorb part of the vibration and reduce the impact on the screw rod 32. At the same time, the hand wheel 3111 can enable the operator to adjust the rotation speed and force according to the needs, and the rotation movement of the hand wheel 3111 can be accurately transmitted to the screw rod 32 through the transmission member 3112, so as to accurately control the rotation of the screw rod 32 and the pressing force of the pressing part 1.

[0051] It should be noted that the transmission member 3112 in this embodiment can adopt a transmission product known to those skilled in the art, such as a combination of gear sets, synchronous wheels and synchronous belts. In a specific structure, the driving part 311 is arranged on the mounting seat 31, and the shaft 31111 of the hand wheel 3111 and the screw rod 32 are each provided with a synchronous wheel, and a synchronous belt is sleeved on the two synchronous wheels. Thus, the screw rod 32 can be driven to rotate by operating the hand wheel 3111.

[0052] And, in this embodiment, as a preferred implementation form, as shown in Figure 1 and Figure 3 The shaft 31111 of the hand wheel 3111 is provided with a counter 4, and the counter 4 is used for measuring the rotation number of the hand wheel 3111. The advantage of this arrangement is that the rotation number of the hand wheel 3111 can be measured by the counter 4, the rotation angle of the screw rod 32 and the displacement of the pressing part 1 can be calculated, so that the operator can accurately control the pressing stroke and ensure the consistency of the pressing depth, thereby avoiding over-pressing or under-pressing.

[0053] It is worth mentioning that the counter 4 in this embodiment can be a combination of a rotary encoder, a controller and a display. In a specific implementation, the rotary encoder can detect the rotation angle and direction of the shaft 31111 of the hand wheel 3111, the controller can calculate the displacement of the pressing part 1 according to the rotation angle of the shaft 31111, the transmission ratio of the transmission member 3112 and the pitch of the screw rod 32, and finally the display is displayed.

[0054] It should be noted that the transmission ratio of the transmission member 3112 in this embodiment is 1, that is, the screw rod 32 rotates one circle and the pressing part 1 moves one pitch (for example, the pitch can be 5mm) when the hand wheel 3111 rotates one circle.

[0055] Further, as a preferred implementation form, as shown in Figure 1 The pressing part 1 of the embodiment comprises a sliding support 11 and a pressing plate 12. The sliding support 11 is threadedly connected with the two screw rods 32 and is axially slidably connected with the two mounting seats 31.

[0056] Thus, the sliding support 11 is threadedly connected with the two screw rods 32 and is axially slidably connected with the two mounting seats 31. Such design ensures that the sliding support 11 remains stable during movement, avoiding deviation or tilting, and improving the precision and reliability of the crimping.

[0057] Meanwhile, the pressing plate 12 is detachably connected below the sliding support 11 and is provided with copper nozzles 121 for crimping busbars. Here, the pressing plate 12 is detachably connected with the sliding support 11, facilitating subsequent maintenance and replacement, and facilitating busbar welding for different specifications of modules.

[0058] In specific structure, the two screw rods 32 are arranged at a distance along the length direction of the sliding support 11. In specific implementation, by driving one screw rod 32 to rotate, the two screw rods 32 are synchronously rotated to jointly drive the sliding support 11 to slide downward along the axial direction of the screw rod 32, and the copper nozzles 121 on the pressing plate 12 crimp the busbar on the module, so that the laser on the welding tool is welded through the through holes of the copper nozzles 121.

[0059] Meanwhile, the sliding support 11 is provided with a nut 112 corresponding to each screw rod 32, and each screw rod 32 is screwed with the corresponding nut 112, so as to convert the rotational motion of the screw rod 32 into the sliding motion of the nut 112, thereby realizing the sliding of the sliding support 11. In addition, the sliding support 11 is also provided with a relief hole 113 for the movement of each screw rod 32 relative to the sliding support 11, which can avoid the corresponding screw rod 32 when the sliding support 11 slides upward.

[0060] It is worth mentioning that the pressing plate 12 in the embodiment can be connected below the sliding support 11 by screwing. Of course, in addition to the screwing connection mode, other common detachable connection modes such as clamping can also be used.

[0061] Specifically, as a preferred implementation form, as shown in Figure 2 and Figure 3 The mounting seat 31 is provided with a sliding rail 312 along the sliding direction of the sliding support 11, and the sliding support 11 is provided with a sliding block 111 slidably connected with the sliding rail 312. Here, through the cooperation of the sliding rail 312 and the sliding block 111, the shaking of the sliding support 11 can be reduced, and the sliding support 11 can move stably along the predetermined direction, which is beneficial to enhance the stability of the overall structure.

[0062] Specifically, the slide rails 312 on each mounting seat 31 are two arranged at intervals along the width direction of the slide bracket 11, and the specific number can also be designed and adjusted according to actual needs, for example, one, three, etc. In specific implementation, the slide bracket 11 is driven by the two screw rods 32 to slide on the slide rails 312 through the sliding blocks 111.

[0063] In addition, in the embodiment, as a preferred implementation form, as shown in Figure 2 The slide bracket 11 is in the shape of “N”, and the screw rod 32 and the transmission part 2 are arranged inside the opening of the slide bracket 11. In this way, the slide bracket 11 is arranged in the shape of “N”, and the screw rod 32 and the transmission part 2 are built-in inside the opening, which can reduce external interference, make the transmission more direct and efficient, and at the same time, can also reduce the overall volume of the welding tool, and the structure is more compact, effectively saving the installation space.

[0064] Considering the need for easy movement of the module welding tool, in the embodiment, as a preferred implementation form, referring to Figure 1 Each mounting seat 31 is provided with a lifting ring 313. In this way, external equipment can be easily lifted, thereby improving the efficiency of carrying and installing the mounting seat 31. In specific implementation, each lifting ring 313 can be connected to the corresponding mounting seat 31 by screwing, of course, in addition to the screwing method, other common connection methods such as welding can also be used.

[0065] In addition, in the embodiment, as a preferred implementation form, still as shown in Figure 1 and Figure 3 The transmission part 2 adopts the combination of the synchronous wheel 21 and the synchronous belt 22. It can be understood that the transmission part 2 is composed of the synchronous wheel 21 and the synchronous belt 22, and in this way, the transmission efficiency is high, and the structure is simple and easy to design and implement.

[0066] At the same time, the combination of the synchronous wheel 21 and the synchronous belt 22 can realize precise synchronous transmission, avoid slipping phenomenon, and ensure more accurate position and speed control in the transmission process. In addition, the meshing transmission mode of the synchronous belt 22 and the synchronous wheel 21 reduces vibration and impact, making the operation more stable.

[0067] In addition, in the embodiment, as a preferred implementation form, continuing to refer to Figure 1 The protective cover 5 is fixed between the two mounting seats 31, and the protective cover 5 covers at least part of the synchronous belt 22. In this way, through the setting of the protective cover 5, the synchronous belt 22 can be prevented from being collided or damaged by external objects, and the stable operation of the transmission part 2 is ensured.

[0068] In the embodiment, each protective cover 5 can be connected between the two mounting seats 31 by screwing, and it is worth mentioning that, besides screwing, other common connection methods, such as welding, can also be used between the protective cover 5 and the two mounting seats 31. By arranging the protective cover 5, the external object can be prevented from colliding with or damaging the synchronous belt 22, and the stable operation between the synchronous belt 22 and the synchronous wheel 21 can be ensured.

[0069] The module welding tool of the embodiment drives the single screw 32 to rotate, synchronously drives the two screws 32 to rotate, drives the sliding support 11 to descend, and presses the busbar on the module through the copper nozzles 121 on the pressing plate 12, and the laser of the welding equipment passes through the through holes of the copper nozzles 121 to weld the busbar and the pole of the battery cell, so that compared with the traditional welding tool, the operation time is shorter, and the welding efficiency is improved.

[0070] Embodiment two

[0071] The embodiment relates to a welding device provided with the module welding tool in the embodiment one.

[0072] The welding device of the embodiment can reduce the operation time by applying the module welding tool in the embodiment one, and the welding efficiency is improved.

[0073] The above description is only the preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1.A module welding tool, characterized in that: it comprises a pressing part, a transmission part and two driving parts; each of the driving parts comprises a mounting seat mounted on a base body of a module carrier, and a screw rod rotatably connected to the mounting seat, the screw rod being threadedly connected to the pressing part; the transmission part is connected between the two screw rods; when at least one of the screw rods is driven to rotate, the two screw rods can be synchronously rotated through the transmission part to jointly drive the pressing part to press a busbar on the module. 2.The module welding tool according to claim 1, characterized in that: at least one of the mounting seats is provided with a driving part; the driving part comprises a hand wheel rotatably connected to the mounting seat, and a transmission member in transmission connection with the hand wheel and the screw rod. 3.The module welding tool according to claim 2, characterized in that: a shaft of the hand wheel is provided with a counter, the counter being used to measure the number of rotations of the hand wheel. 4.The module welding tool according to claim 1, characterized in that: the pressing part comprises a sliding bracket and a pressing plate; the sliding bracket is threadedly connected to the two screw rods and is in axial sliding connection with the two mounting seats along the screw rods; the pressing plate is detachably connected below the sliding bracket and is provided with a copper nozzle used to press the busbar. 5.The module welding tool according to claim 4, characterized in that: the mounting seat is provided with a sliding rail along the sliding direction of the sliding bracket, and the sliding bracket is provided with a sliding block in sliding connection with the sliding rail. 6.The module welding tool according to claim 4, characterized in that: the sliding bracket is in the shape of a "U", and the screw rod and the transmission part are arranged inside the opening of the sliding bracket. 7.The module welding tool according to claim 1, characterized in that: each of the mounting seats is provided with a lifting ring. 8.The module welding tool according to any one of claims 1 to 7, characterized in that: the transmission part adopts a combination of a synchronous wheel and a synchronous belt. 9.The module welding tool according to claim 8, characterized in that: a protective cover is fixed between the two mounting seats, and the protective cover covers at least part of the synchronous belt. 10.A welding device, characterized in that: the welding device is provided with the module welding tool according to any one of claims 1 to 9.

Images