CN107891242A - A kind of battery case weld fixture apparatus - Google Patents

Abstract

The invention provides a kind of battery case weld fixture apparatus, belong to cell art.It solve the problems, such as to be difficult to it is automatic, quickly by battery case welding fabrication.This weld fixture apparatus includes workbench, the first actuator and the second clamping block are fixedly installed on workbench, the first clamping block driven by the first actuator is movably set with workbench, second clamping block is used for the wherein corner for being connected to battery case inwall, and the first actuator is used for remaining each corner for driving the first clamping block to be connected to battery case inwall；Activity is provided for the crushing block contradicted with battery outer box wall on workbench, is provided with workbench for driving crushing block and then battery case side wall being resisted against into the second actuator on the first clamping block and the second clamping block.It quickly can be positioned to battery case, and the trailing edge structure for installing fixation is accurate, relatively stable to battery case fixation in welding process, be not easy to loosen.

Description

A battery box welding and fixing device

technical field

The invention belongs to the technical field of batteries, and relates to a battery box welding and fixing device.

Background technique

The battery box can be used to fill the battery, thereby keeping the battery pack in place. The existing battery box basically has a box-shaped structure. During production and processing, the original plate as shown in Figure 1 needs to be bent inward along the position of the dotted line to form a box-packed structure as shown in Figure 6, that is It includes a bottom wall 61 and multiple side walls 62 , and the side walls 62 are vertically distributed around the bottom wall 61 . Then use a welding machine to weld and fix the edges at the junction of the side walls to form a battery box.

The existing Chinese patent (notification number: CN105171216A, publication date: 2015.12.23) discloses a pneumatic butt welding machine, including a workbench, on which a clamping device for clamping and fixing the workpiece is arranged. There are two sets of devices, one set is fixed on the workbench, and the other is set on the propulsion mechanism. Driven by the propulsion mechanism, the two sets of clamping devices move closer to each other, and then generate clamping force on the workpiece, so that the workpiece can be clamped tight.

Since the welding of the battery box welds and fixes the two adjacent side walls, it is necessary to close the two side walls against each other. The simple extrusion and pushing device in the above technical solution cannot effectively fix the battery box, and needs to be designed. A set of fixture structure that can automatically fix the battery box.

Contents of the invention

The purpose of the present invention is to solve the above problems in the existing technology, and propose a battery case welding and fixing device. The technical problem to be solved by the present invention is: how to automatically and quickly weld the battery case into shape.

The purpose of the present invention can be achieved through the following technical solutions:

A welding and fixing device for a battery box. The battery box is in the shape of a square box. The battery box has an inner cavity with an opening on one side. The inner cavity is composed of a bottom wall and a plurality of side walls distributed around the bottom wall. The adjacent two side walls The included angles between them are corners, and the welding and fixing device includes a workbench. The first clamping block driven by the driver, the second clamping block is used to be clamped on one corner of the side wall of the inner cavity of the battery box, and the first drive is used to drive the first clamping block to be clamped on The remaining corners of the side wall of the inner chamber of the battery box; an extruding block for contacting the outer wall of the battery box is movable on the workbench, and the extruding block is arranged on the workbench to push the side wall of the battery box against The second driving member leans against the first clamping block and the second clamping block.

Compared with the prior art, the movable first clamping block can be clamped on multiple corners of the battery box through the first driving member, and at the same time cooperate with the fixed second clamping block to make each corner receive The clamping force of the clamping block, so that each corner can form a stable angle, so that the excessively bent side wall on the upper part of the battery box can be opened to a suitable position. At the same time cooperate with the external extruding block, and the extruding block can cooperate with the first engaging block and the second engaging block to extrude the remaining side walls of the battery box which are not bent enough to the original position. In this way, the side walls of the battery case can be kept in precise alignment under the interaction of the pressing block, the first engaging block and the second engaging block, which facilitates the welding of the edges by the welding head. Moreover, this structure can keep all the edges precisely fixed at one time, and the welding head can weld all the edges at one time.

Also, with the above structure, quick installation and removal of the battery case can be realized. When installing, you only need to snap and align one of the corners of the inner wall of the battery box on the second snap-in block. Since the first snap-in block is relatively inward, it will not affect the connection between the first snap-in block and the second snap-in block of the unwelded battery box. The two clamping blocks are all covered inside. Thereafter, the first driving member will automatically drive the first engaging block to collide with the corner of the inner wall of the battery box, and the battery box can be slightly displaced to an accurate position by itself, thereby realizing automatic positioning. Then the second driving member drives the extruding block to press against the outer wall of the battery box to form a stable clamping force on the battery box while adjusting the structure to complete the installation and fixation. After the battery box is welded, the first clamping block and the extruding block are separated from the battery box respectively, and the battery box can be released freely, so that the slight deformation formed on the battery box due to welding heat will not affect the battery box. .

In the above battery case welding and fixing device, the first clamping block and the second clamping block are vertically provided with two clamping surfaces for contacting the adjacent side walls of the battery box edge, and the extrusion The pressing block is in one-to-one correspondence with the clamping surface, and the contact portion of the extrusion block for contacting the outer wall of the battery box is directly opposite to the clamping surface. The structure where the extrusion block is arranged opposite to the clamping surface can generate a relatively stable clamping force, and also keep the clamping force near the edge. The distance between the two clamping forces is relatively close, which can be stably transmitted to the edge Position, so that the edges of the two side walls can be more accurately aligned during welding, which is convenient for welding stability. At the same time, the structure of the clamping surface is also convenient for stabilizing the corner angle, so that the battery box can maintain a stable shape.

In the above battery box welding and fixing device, horizontally protruding presser feet are arranged in a vertical array on the extrusion block. The presser foot can increase the base area between the extrusion block and the outer wall of the battery box to ensure that the force is evenly distributed. At the same time, the vertically arranged presser foot can also cooperate with the vertical edge structure, so that the position of the edge of the adjacent side wall can maintain high stability.

In the above-mentioned battery box welding and fixing device, the clamping assembly on the workbench is used to clamp the side wall of the battery box. superior. The clamping assembly can provide additional clamping force at the position of the side wall, so that the battery box can be more stably fixed on the workbench.

In the above battery box welding and fixing device, the clamping assembly includes a first clamping block fixedly arranged on the workbench and a second clamping block movably arranged on the workbench, the first clamping block is used for The inner wall of the battery box is attached, and a third driving member for driving the second clamping block to be attached to the outer wall of the battery box is provided on the workbench. The third driving member can make the side wall of the battery box stick to the first clamping block through the second clamping block, and then generate a clamping force on the side wall of the battery box to ensure the stability of the installation and fixation.

In the above battery box welding and fixing device, the first driving member, the second driving member and the third driving member are air cylinders or hydraulic cylinders. The air cylinder or hydraulic cylinder can generate stable thrust, so that the driven parts can move stably in a straight line to meet the motion requirements.

In the above battery case welding and fixing device, the welding and fixing device includes a bracket, the workbench is connected to the bracket through a rotating shaft, and a fixing assembly for fixing the position of the workbench is arranged on the bracket. The workbench can be turned over by the bracket, which allows the battery box to be welded at different angles, eliminating the overall displacement of the welding equipment, and it is more convenient to turn over.

In the above battery case welding and fixing device, there are two fixing components, which respectively fix the workbench in the horizontal position and the vertical position. When flipped to a horizontal or vertical state, the edges on both sides of the battery box can be welded and fixed respectively, and the edges on the battery box can be welded and fixed only by switching the two states.

In the above-mentioned battery box welding and fixing device, the fixing assembly includes a base, a rocker arm is hinged on the base, a bolt is connected to the rocker arm, and a shaft cooperating with the bolt shaft is provided on the side wall of the workbench. The pin hole of the rocker arm is inserted into the pin hole by shaking the drive bolt. The cooperation between the pin and the pin hole can stably fix the position of the workbench. If you need to switch the position of the workbench, you only need to pull out the pin through the rocker arm.

Compared with the prior art, the present invention has the following advantages:

1. The battery box can be quickly positioned, and the edge structure is accurate after installation and fixing.

2. The fixing of the battery box is relatively stable during the welding process, and it is not easy to loosen.

3. It can be turned freely to realize multi-angle welding.

Description of drawings

Fig. 1 is a structural diagram of the unwelded battery case in an open state as described in the background art.

Fig. 2 is a structural diagram of the battery box installed on the workbench in this embodiment.

Fig. 3 is a structural diagram of this embodiment without the battery box.

Fig. 4 is a structural diagram of the first clamping block and the second clamping block in this embodiment;

Fig. 5 is a partial enlarged view of A in Fig. 2 .

FIG. 6 is a structural view of the unwelded battery case in the state of being bent as described in the background art.

In the figure, 1. workbench; 11. rotating shaft; 12. pin hole; 21. first driving member; 22. second clamping block; 23. first clamping block; 24. clamping surface; 31. extrusion Block; 32, second driver; 33, presser foot; 41, first clamping block; 42, second clamping block; 43, third driver; 5, fixed assembly; 51, bracket; 52, base ; 53, rocker arm; 54, latch; 6, battery box; 61, bottom wall; 62, side wall; 63, inner cavity.

Detailed ways

The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

As shown in Figure 2 and Figure 3, a battery box welding and fixing device, the battery box 6 is boxed in a square shape, and the battery box is provided with an inner cavity 63 with an opening on one side, and the inner cavity 63 consists of a bottom wall 61 and four The side walls 62 distributed around the bottom wall 61 are formed, the angles between adjacent side walls 62 are corners, and the corners are 90°, the four side walls 62 are all perpendicular to the bottom wall 61, and the welding fixture includes The workbench 1 is provided with a first clamping block 23 and a second clamping block 22, the number of the first clamping block 23 is three, the number of the second clamping block 22 is one, and the number of the first clamping block 22 is three. The connecting block 23 and a second engaging block 22 are respectively used for engaging the four corners of the inner wall of the battery case 6 . The second clamping block 22 is fixed on the workbench 1, the first clamping block 23 is movably arranged on the workbench 1, and the workbench 1 is provided with a first driver 21 corresponding to the first clamping block 23 one-to-one. The first driving member 21 is a hydraulic cylinder, and the first engaging block 23 drives the first engaging block 23 to move a fixed length along the diagonal direction of the battery case 6, so that the first engaging block 23 and the edge of the inner wall of the battery case 6 The two sides of the corner are in conflict. The first clamping block 23 and the second clamping block 22 are in contact with the corners of the four battery boxes 6 respectively, thereby ensuring that the side walls of the battery box 6 can be in a stable open state.

As shown in Figure 3 and Figure 4, the first clamping block 23 and the second clamping block 22 are provided with two vertical clamping surfaces 24, the two clamping surfaces 24 on the same clamping block The angles between them are the same as the angles of the corners of the battery case 6 . In this embodiment, the two clamping surfaces 24 are perpendicular to each other. Both the first clamping block 23 and the second clamping block 22 are in contact with the inner wall of the battery box 6 through clamping.

As shown in Fig. 2 and Fig. 3, a second driver 32 is arranged on the workbench 1 at the same time, and the second driver 32 is a cylinder, and each second driver 32 is connected with an extruding block 31, and the extruding block 31 The number is the same as the number of clamping surfaces 24, which are 8. The surface of the extruding block 31 is perpendicular to the clamping surface 24, and the second driving member 32 can drive the extruding block 31 to press on the outer wall of the battery case 6, and the contact part between the extruding block 31 and the outer wall of the battery case 6 faces the engaging surface 24 The contact part with the inner wall of the battery box 6. Each group of corresponding extruding blocks 31 and clamping surfaces 24 can form a relatively stable clamping force near the corners of the battery box 6, so that the two side walls of the corners of the battery box 6 are precisely aligned to form edges, It is convenient for welding and fixing of the welding head to the edge.

Wherein, on the extruding block 31, horizontally protruding presser feet 33 are arranged in a vertical array, and the presser feet 33 and the extruding block 31 are jointly fitted on the side wall of the battery case 6, thereby improving the impact of the extruding block 31 on the battery case. 6 contact area, so that the power can be transmitted stably.

As shown in Figure 3, the workbench 1 is also provided with a clamping assembly for clamping the side wall of the battery box 6, the number of the clamping assemblies is two, and the two clamping assemblies are respectively clamped on the opposite and larger side of the battery box 6. on the side wall. Each clamping assembly includes a first clamping block 41 fixedly arranged on the workbench 1 and a second clamping block 42 movably arranged on the workbench 1, and a third drive member 43 is fixedly arranged on the workbench 1. The three driving parts 43 are air cylinders, and the third driving part 43 drives the second clamping block 42 to move toward the first clamping block 41, and then after the battery box 6 is fixed on the workbench 1, the third driving part 43 can drive the second clamping block 42 to move toward the first clamping block 41. The clamping block 42 clamps the side wall of the battery box 6 , thereby keeping the side wall of the battery box 6 stable, and also avoiding deformation of the side wall with a large area during the welding process.

As shown in Figure 3 and Figure 5, the battery box welding and fixing device also includes a bracket 51, the bracket 51 is used to be placed on the ground, the two sides of the workbench 1 are provided with a rotating shaft 11, and the bracket 51 is provided with a shaft that matches the rotating shaft 11. The bearing seat, and then the workbench 1 can be rotated along the axis of the rotating shaft 11, so that the battery box 6 on the workbench 1 can be welded at different angles.

As shown in Fig. 3 and Fig. 5, two groups of fixing assemblies 5 are arranged on the bracket 51, and each group of fixing assemblies 5 includes a base 52, and a rocker arm 53 is hinged on the base 52. There is a latch 54 that can freely telescopically slide, and the rocking arm 53 is connected with the latch 54, and the rocking arm 53 can drive the latch 54 to move. The workbench 1 is provided with a pin hole 12 matched with the latch 54 , the swing of the rocker arm 53 can drive the latch 54 to be inserted into the pin hole 12 of the workbench 1 , and then the workbench 1 is kept fixed relative to the support 51 .

The two sets of fixing components 5 are respectively arranged above and below the support 51, and can respectively fix the workbench 1 in a vertical state and a horizontal state, and the switching between different states can be realized by extracting the latch 54 and then turning the workbench 1 manually.

The working process of using the battery box welding and fixing device for battery box welding is as follows: one of the angles of the inner wall of the battery box 6 is clamped and aligned on the second clamping block 22, and at this time, the first driving member 21 drives all the first The clamping block 23 shrinks, so that the battery box 6 covers all the first clamping block 23 and the second clamping block 22 inside. Then the first driving member 21 drives the first locking block 23 to move to a designated position, so that it can be locked on the remaining corners of the inner wall of the battery box 6 . Then, the second driving member 32 drives the extruding block 31 to press against the outer wall of the battery box 6 to form a clamping force with the first engaging block 23 and the second engaging block 22, and then press the two side walls at the edge of the battery box 6 keep it steady. Finally, the third driving member 43 drives the second clamping block 42 to press against the outer wall of the battery box 6 to form a clamping force with the first clamping block 41 to fix the position of the battery box 6 .

After the battery box 6 is installed and fixed, the welding head can weld and fix the edge of the battery box 6. After the edge of the battery box 6 side is welded, people can make the latch 54 and the workbench by swinging the rocker arm 53. 1 is separated, and then the workbench 1 is rotated to a vertical state, and the workbench 1 will be fixed by using the latch 54 of the other fixing component 5 of the bracket 51, so as to facilitate welding the edge on the other side. After the edges of the battery box 6 are all welded, the first driver 21, the second driver 32 and the third driver 43 respectively drive the connected parts to separate from the battery box 6, and the welded battery box 6 can be removed. . The whole process has a high degree of automation, which can realize automatic positioning, and all the edges can be welded in one fix.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which the present invention belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the present invention or go beyond the definition of the appended claims range.

Although 1. worktable; 11. rotating shaft; 12. pin hole; 21. first driving member; 22. second clamping block; 23. first clamping block; 24. clamping surface; 31. Extruding block; 32. Second driving member; 33. Presser foot; 41. First clamping block; 42. Second clamping block; 43. Third driving member; 5. Fixed component; 51. Bracket; 52, base; 53, rocker arm; 54, latch; 6, battery box; 61, bottom wall; 62, side wall; 63, inner cavity and other terms, but the possibility of using other terms is not excluded. These terms are used only for the purpose of describing and explaining the essence of the present invention more conveniently; interpreting them as any kind of additional limitation is against the spirit of the present invention.

Claims (9)

1. A welding and fixing device for a battery box, the battery box is in the shape of a square box, and the battery box has an inner cavity (63) with an opening on one side, and the inner cavity (63) consists of a bottom wall (61) and a plurality of holes distributed on the bottom wall. (61) is composed of side walls (62) around, and the angle between adjacent side walls (62) is a corner, and the welding and fixing device includes a workbench (1), characterized in that the workbench (1) A first driving member (21) and a second clamping block (22) are fixedly arranged on the top, and a first clamping block (23) driven by the first driving member (21) is movably arranged on the worktable (1) , the second clamping block (22) is used to be clamped on one corner of the side wall of the inner cavity of the battery box, and the first driving member (21) is used to drive the first clamping block (23) to be clamped on the The remaining corners of the side walls of the inner cavity of the battery box; the workbench (1) is provided with movable extruding blocks (31) for conflicting with the outer wall of the battery box, and the workbench (1) is provided with extruding blocks for driving The pressure block (31) then presses the side wall of the battery case against the second driving member (32) on the first engaging block (23) and the second engaging block (22). 2. The battery box welding and fixing device according to claim 1, characterized in that, the first clamping block (23) and the second clamping block (22) are vertically provided with two blocks for interfering with the battery box. The edge is adjacent to the clamping surface (24) of the two side walls, and the extrusion block (31) corresponds to the clamping surface (24) one by one, and the extrusion block (31) is used for contact with the outer wall of the battery box Part is facing with the clamping surface (24). 3 . The battery box welding and fixing device according to claim 1 , characterized in that horizontally protruding presser feet ( 33 ) are arranged in a vertical array on the extrusion block ( 31 ). 4 . 4. The battery box welding and fixing device according to claim 1, characterized in that, the clamping assembly on the workbench (1) is used to clamp the side wall of the battery box, and the number of the clamping assemblies is two and They are respectively used to be clamped on the opposite side walls of the battery box. 5. The battery box welding and fixing device according to claim 4, characterized in that, the clamping assembly includes a first clamping block (41) fixedly arranged on the workbench (1) and a first clamping block (41) movably arranged on the workbench ( 1) the second clamping block (42), the first clamping block (41) is used to fit the inner wall of the battery box, and the workbench (1) is provided with a drive for driving the second clamping block (42) The third driver (43) attached to the outer wall of the battery case. 6. The battery box welding and fixing device according to claim 5, characterized in that, the first driving member (21), the second driving member (32) and the third driving member (43) are air cylinders or hydraulic cylinders. 7. The battery box welding and fixing device according to any one of claims 1 to 6, characterized in that the welding and fixing device includes a bracket (51), and the workbench (1) connects with the bracket ( 51) connection, the bracket (51) is provided with a fixing component (5) for fixing the position of the workbench (1). 8. The battery box welding and fixing device according to claim 7, characterized in that there are two fixing components (5), which respectively fix the workbench (1) in a horizontal position and a vertical position. 9. The battery box welding and fixing device according to claim 7, characterized in that, the fixing assembly (5) includes a base (52), and a rocker arm (53) is hinged on the base (52), so that A bolt (54) is connected to the rocker arm (53), and a pin hole (12) cooperating with the bolt (54) is provided on the side wall of the workbench (1), and the rocker arm (53) is driven by shaking The latch (54) is inserted into the pin hole (12).