CN217142721U - Welding mechanism, welding station and battery manufacturing equipment - Google Patents

Abstract

The utility model relates to the technical field of battery manufacturing, in particular to a welding mechanism, a welding station and battery manufacturing equipment. The welding mechanism includes: a supporting part; a welding head, which is arranged on the supporting part; a pressing cylinder part, which is arranged on the supporting part and is located below the welding head; , the relative position of the welding surface and the welding head is fixed. The relative position of the welding surface of the pressing cylinder part and the welding head of the utility model is fixed, so that the welding distance remains unchanged, so that the distance measuring system is omitted, the structure is simpler, the cost is low, and the welding head does not need to be adjusted for each welding. Height, effectively improve welding efficiency.

Description

Welding mechanism, welding station and battery manufacturing equipment

technical field

The utility model relates to the technical field of battery manufacturing, in particular to a welding mechanism, a welding station and battery manufacturing equipment.

Background technique

In the production process of power battery modules, BSB welding and FPC welding of battery modules are very core processes. Among them, BSB is the abbreviation of Busbar, which means busbar, and FPC is the abbreviation of Flexible Printed Circuit, which means flexibility. circuit board. The traditional welding production methods are BSB welding and FPC welding. BSB welding and FPC welding are two different welding stations respectively. Two lasers are used. The battery module is fixed in the photo-ranging and positioning station, and the welding head is brought to the designated position by the robot or servo shaft to weld the battery module.

The BSB welding and FPC welding stations of the battery module adopt the welding method of fixing the battery module and moving the welding head. The welding surface of the welding method is not fixed. Distance addressing, the height of the welding head is adjusted after the distance measurement, and the height of the welding head needs to be adjusted for each welding, the structure is complex and the welding efficiency is low.

Utility model content

Therefore, the technical problem to be solved by the present invention is to overcome the defects of complicated structure and low welding efficiency caused by the welding method of fixing the battery module and moving the welding head in the prior art, so as to provide a welding mechanism, a welding station and Battery manufacturing equipment.

In order to solve the above problems, the present invention provides a welding mechanism, which includes: a supporting part; a welding head, which is arranged on the supporting part; The contact surface of the parts to be welded contacts, the contact surface forms a welding surface, and the relative position of the welding surface and the welding head is fixed.

Optionally, the pressure cylinder component includes a fixed plate and a fixed pressure cylinder, the fixed plate is arranged on the support member, the fixed pressure cylinder is fixed on the fixed plate, and the bottom surface of the fixed pressure cylinder forms a welding surface.

Optionally, the pressure cylinder component further includes an adjustment pressure cylinder, and the adjustment pressure cylinder is movably arranged on the fixing plate.

Optionally, the supporting member includes a supporting member and a mounting member, the mounting member is movably arranged on the supporting member, the welding head and the pressing cylinder member are mounted on the mounting member, and the welding mechanism further includes a pressing component, and the pressing component is fixed on the supporting member. on the part and connected with the installation part, so as to drive the installation part to rise and fall.

Optionally, the welding mechanism further includes a dust extraction component, and the dust extraction component is arranged on the pressing cylinder part.

The utility model also provides a welding station, comprising a frame and at least one of the above-mentioned welding mechanisms.

Optionally, the number of welding mechanisms is two, which are the first welding mechanism and the second welding mechanism, respectively, the first welding mechanism and the second welding mechanism are arranged on the frame at intervals along a preset direction, and the first welding mechanism is used for The busbar of the battery module is welded, and the second welding mechanism is used for welding the FPC of the battery module.

Optionally, the welding station further includes a loading and unloading mechanism, the loading and unloading mechanism is arranged on one side of the frame, and the loading and unloading mechanism is used to grab the battery module of the upstream station to the welding mechanism and is used to The battery module is grabbed to the downstream station.

Optionally, the loading and unloading mechanism is a manipulator.

Optionally, the welding station further includes lasers, the number of lasers is one, and the first welding mechanism and the second welding mechanism share one laser, or the number of lasers is two, and one laser is electrically connected to the first welding mechanism. , another laser is electrically connected with the second welding mechanism.

Optionally, the welding station further includes a chiller, which is arranged on one side of the frame and is used for cooling the welding head and the laser.

Optionally, the welding station further includes a dust collector, which is arranged on one side of the frame and connected to the dust extraction component of the welding mechanism.

The utility model also provides a battery manufacturing equipment, comprising: the above-mentioned welding station.

The utility model has the following advantages:

1. The relative position of the welding surface of the pressure cylinder part and the welding head is fixed, so that the welding distance remains unchanged, so that the distance measuring system is omitted, the structure is simpler, and the cost is low, and the height of the welding head does not need to be adjusted for each welding. Effectively improve welding efficiency.

2. Integrate the first welding mechanism and the second welding mechanism on one frame, and then weld the FPC of the battery module after welding the busbar of the battery module, and realize the continuous welding of the busbar and the FPC in one welding station. Simple structure, small footprint and low cost.

3. The loading and unloading mechanism is used for positioning the welding position, loading and unloading. At this time, the battery module is welded by moving the battery module. During welding, the loading and unloading mechanism grabs the battery module and positions it to the welding position, and the loading and unloading mechanism is used instead of taking pictures, and there is no need to adjust the welding distance of the welding mechanism to improve the welding efficiency.

4. The first welding mechanism and the second welding mechanism share one laser, which reduces the number of lasers and saves costs.

Description of drawings

In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the specific embodiments or the prior art. Obviously, the following descriptions The accompanying drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

Fig. 1 shows a partial perspective schematic diagram of a welding mechanism according to an embodiment of the present invention;

FIG. 2 shows a three-dimensional schematic diagram of a welding station according to an embodiment of the present invention;

FIG. 3 shows a partial schematic perspective view of the welding mechanism of the welding station of FIG. 2 .

Description of reference numbers:

10, frame; 20, first welding mechanism; 21, support piece; 22, mounting piece; 23, pressurizing assembly; 24, welding head; 25, pressing cylinder part; 251, fixing plate; 252, fixing pressing cylinder; 253, regulating cylinder; 254, protective gas valve; 26, dust extraction assembly; 27, first reinforcement; 28, guiding mechanism; 30, second welding mechanism; 40, laser; 50, chiller; 70, loading and unloading mechanism; 90, battery module.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner" and "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, with a specific orientation. Therefore, it should not be construed as a limitation on the present invention. Furthermore, the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a connectable connection. Detachable connection, or integral connection; may be mechanical connection or electrical connection; may be direct connection, or indirect connection through an intermediate medium, or internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as there is no conflict with each other.

As shown in FIG. 1 , the welding mechanism of this embodiment includes: a supporting member, a welding head 24 and a pressing cylinder member 25 ; the welding head 24 is arranged on the supporting member; Below, the pressing cylinder part 25 has a contact surface which is in contact with the part to be welded, the contact surface forms a welding surface, and the relative position of the welding surface and the welding head 24 is fixed.

Applying the welding mechanism of the battery module of this embodiment, the relative position of the welding surface of the pressure cylinder member 25 and the welding head 24 is fixed, so that the welding distance remains unchanged, so that the distance measuring system is omitted, the structure is simpler, and the cost is low. There is no need to adjust the height of the welding head during the second welding, which effectively improves the welding efficiency.

It should be noted that the welding head 24 includes a galvanometer and the like. The galvanometer controls the laser emission direction. The distance between the center of the lens in the galvanometer and the welding surface is the welding distance, and the welding distance is consistent with the focal length of the galvanometer.

It should be noted that the components to be welded are bus bars or FPCs.

In this embodiment, the pressing cylinder member 25 includes a fixing plate 251 and a fixing pressing cylinder 252, the fixing plate 251 is arranged on the support member, the fixing pressing cylinder 252 is fixed on the fixing plate 251, and the bottom surface of the fixing pressing cylinder 252 forms a welding surface. The fixed pressure cylinder 252 is used to locate the distance from the galvanometer, and the fixed plate 251 is used to fix the pressure cylinder 252 .

In this embodiment, the pressure cylinder part 25 further includes an adjustment pressure cylinder 253 , and the adjustment pressure cylinder 253 is movably arranged on the fixing plate 251 . The adjusting pressure cylinder 253 can be adapted to the different heights of the cells of the battery module. When the welding mechanism welds the busbars, the welding mechanism can press two busbars at a time to improve the welding efficiency. Specifically, the adjusting cylinder 253 is connected to the fixing plate 251 through elastic members such as springs. It can be understood that, as an alternative embodiment, the adjusting pressure cylinder 253 may not be provided, and the welding mechanism may weld the FPC in this case.

In this embodiment, the pressure cylinder parts 25 further include a protective gas valve 254, which is arranged on the mounting member 22 and connected to a gas source, which provides protective gas for welding, and the protective gas is nitrogen or the like.

In this embodiment, as shown in FIG. 1 and FIG. 3 , the supporting member includes a supporting member 21 and a mounting member 22 . The mounting member 22 is movably arranged on the supporting member 21 , and the welding head 24 and the pressing cylinder member 25 are mounted on the mounting member 21 . On the component 22 , the welding mechanism further includes a pressing component 23 , and the pressing component 23 is fixed on the supporting component 21 and connected with the mounting component 22 to drive the mounting component 22 to rise and fall. During welding, after the battery module 90 is in place, the mounting member 22 is driven down by the pressing component 23, and the pressing cylinder member 25 is pressed on the busbar or the nickel sheet of the FPC. The nickel sheets of the busbar or FPC are welded. After the welding is completed, the pressurizing assembly 23 drives the mounting member 22 to rise, and the pressing cylinder member 25 leaves the battery module 90. Then, the above actions are repeated to complete the welding of all the busbars or the nickel sheets of the FPC. The pressing component 23 exerts a force towards the battery module for the pressing cylinder member 25, so that the pressing cylinder member 25 is pressed against the busbar or the nickel sheet of the FPC, thereby improving the welding accuracy.

Specifically, the support member 21 is a vertical support vertical plate, the mounting member 22 is a vertical installation vertical plate, the mounting vertical plate and the support vertical plate are arranged in parallel, and the structure of the support member 21 and the mounting member 22 is simple ,save costs. A first reinforcing member 27 is disposed between the supporting vertical plate and the frame 10, and the first reinforcing member 27 can ensure the strength of the supporting vertical plate, thereby improving the structural stability. The shape of the first reinforcement member 27 is a right triangle or the like.

In this embodiment, the pressing component 23 includes a mounting plate and a pressing driving member, the mounting plate is fixed on the mounting member 22 , the pressing driving member is fixed on the mounting plate, and the driving end of the pressing driving member is connected with the mounting member 22 , the mounting member 22 is driven up and down by the pressing driving member. The mounting plate is provided for easy installation of the pressurized drive. Specifically, the pressing assembly 23 further includes a reinforcing plate connected between the mounting plate and the mounting piece 22 , and the reinforcing plate makes the mounting plate more stably fixed on the mounting piece 22 , and the structure is more stable and reliable. The mounting plate is a horizontal mounting plate arranged in the horizontal direction, and the shape of the reinforcing plate is a right-angled triangle or the like.

Preferably, the pressurizing driving member is a cylinder. After the battery module 90 is in place, the cylinder is pressed down, and the welding mechanism presses the cylinder member 25 against the mounting member 22 , the welding head 24 and the cylinder member 25 by their own gravity. On the busbar or the nickel sheet of the FPC. It can be understood that, in other embodiments, the pressurized driving member is a hydraulic cylinder or an electric cylinder or the like.

In this embodiment, as shown in FIG. 1 , the welding mechanism further includes a dust extraction component 26 , and the dust extraction component 26 is arranged on the pressing cylinder member 25 . The dust extraction component 26 is connected with the dust collector, and the dust collector sucks away the smoke and dust generated during the welding process, so as to prevent the smoke and dust generated during the welding from affecting the health of workers.

Specifically, the dust extraction assembly 26 includes a dust collection hood and a dust extraction pipe. The dust collection cover is arranged on the fixing plate 251. One end of the dust extraction pipe is connected with the dust collection cover and the other end is connected with the dust collector.

In this embodiment, as shown in FIG. 3 , the welding mechanism further includes a guide mechanism 28 . The guide mechanism 28 is arranged between the mounting member 22 and the support member 21 . The guide mechanism 28 guides the lifting and lowering of the mounting member 22 , thereby increasing the lower Pressure accuracy, thereby improving welding accuracy. Specifically, the guide mechanism 28 includes a guide rail and a sliding block, the guide rail is fixed on the support member 21 , the sliding block is fixed on the mounting member 22 , and the sliding block is slidably arranged on the guide rail.

The present invention also provides a welding station, which includes a frame 10 and at least one of the above-mentioned welding mechanisms.

In this embodiment, as shown in FIG. 1 to FIG. 3 , the number of welding mechanisms is two, which are the first welding mechanism 20 and the second welding mechanism 30 respectively. The directions are arranged on the rack 10 at intervals, the first welding mechanism 20 is used for welding the bus bars of the battery module 90 , and the second welding mechanism 30 is used for welding the FPC of the battery module 90 . The first welding mechanism 20 and the second welding mechanism 30 are integrated on a frame 10, after welding the busbars of the battery modules 90, the FPCs of the battery modules 90 are welded, and the busbars and the FPCs are welded in one welding station. Continuous welding, simple structure, small footprint and low cost. It can be understood that, as an alternative embodiment, the number of welding mechanisms may also be one or at least three.

In this embodiment, the welding station further includes a loading and unloading mechanism 70. The loading and unloading mechanism 70 is arranged on one side of the frame 10. The loading and unloading mechanism 70 is used to grab the battery module 90 of the upstream station to the welding mechanism. And it is used to grab the welded battery module 90 to the downstream station, and the loading and unloading mechanism 70 is used for positioning the welding position, loading and unloading. At this time, the battery module is welded by moving the battery module. During welding, the loading and unloading mechanism 70 grabs the battery module 90 to position it at the welding position, and the loading and unloading mechanism 70 is used instead of taking pictures, and there is no need to adjust the welding distance of the welding mechanism, thereby improving the welding efficiency.

Preferably, the loading and unloading mechanism 70 is a manipulator or the like, and the manipulator is more flexible and can accurately grasp the battery module.

In this embodiment, the pressing cylinder part 25 of the first welding mechanism 20 includes an adjusting cylinder 253 , and the pressing cylinder part 25 of the second welding mechanism 30 includes a fixing plate 251 and a fixed pressing cylinder 252 , but does not include the adjusting cylinder 253 .

In this embodiment, as shown in FIG. 2 , the welding station further includes a laser 40, the number of lasers 40 is one, and the first welding mechanism 20 and the second welding mechanism 30 share one laser 40, which reduces the number of lasers and saves money. cost. Laser 40 provides the energy source for welding and generates laser light. It can be understood that, as an alternative embodiment, the number of lasers 40 is two, one laser 40 is electrically connected to the first welding mechanism 20 , and the other laser 40 is electrically connected to the second welding mechanism 30 .

In this embodiment, the welding station further includes a chiller 50 . The chiller 50 is arranged on one side of the frame 10 and is used for cooling the welding head 24 and the laser 40 . The chiller 50 provides cooling water for the welding station, and the cooling water cools the welding head 24 and the laser 40 to ensure that the welding head 24 and the laser 40 work normally. Among them, the cooling water is distilled water or the like.

In this embodiment, the welding station further includes a dust collector (not shown in the figure), which is arranged on one side of the frame 10 and is connected to the dust extraction assembly 26 of the welding mechanism. The dust collector sucks away the smoke and dust generated during the welding process. The first welding mechanism 20 and the second welding mechanism 30 share one dust collector. The number of dust collectors is small and the cost is low.

Specifically, the laser 40, the dust collector and the chiller 50 are all arranged on the side of the rack 10 away from the manipulator, and the laser 40, the dust collector and the chiller 50 are arranged in sequence along a preset direction on the side of the rack 10 away from the manipulator cloth.

In this embodiment, the welding station further includes a vision component, and the vision component performs post-welding appearance inspection on the battery module.

The working process of the welding station will be described below with reference to Figures 1 to 3:

Assemble the busbar and FPC together with the tooling at the module stacking station;

After the battery module is assembled, the manipulator grabs the battery module to the welding position of the bus bar. After the battery module is in place, the cylinder is pressed down, and the first welding mechanism 20 relies on the weight of some of its components to fix the pressure cylinder 252 and adjust the pressure cylinder. 253 is pressed on the busbar, the first welding mechanism 20 can press two poles at the same time, and after the fixed pressure cylinder 252 and the adjustment pressure cylinder 253 are pressed in place, the laser starts to generate laser light, and the galvanometer emits light to the busbar. Welding, after the welding is completed, the cylinder is pulled up, the fixed pressure cylinder 252 and the adjustment pressure cylinder 253 leave the battery module, and then go to the next position, and then repeat the above actions until all the busbars are welded;

After the busbar welding is completed, the manipulator grabs the battery module to the FPC welding position. After the battery module is in place, the cylinder is pressed down, and the second welding mechanism 30 relies on the self-weight of some of its components to press the fixed pressure cylinder 252 on the FPC nickel sheet. , the second welding mechanism 30 can press one FPC nickel sheet at a time. After the fixed pressing cylinder 252 is pressed in place, the laser starts to generate laser light, and the nickel sheet of the FPC is welded by the galvanometer. After the welding is completed, the cylinder is pulled up and fixed. The pressing cylinder 252 leaves the battery module, and then goes to the next position, and then repeats the above actions until all the nickel sheets of the FPC are welded;

After the welding is completed, the manipulator will place the battery module under the vision component, and conduct post-weld appearance inspection of the battery module.

The utility model also provides a battery manufacturing equipment, which comprises: the above-mentioned welding station.

In this embodiment, the battery manufacturing equipment also includes a lamination machine, etc. The lamination machine alternately stacks positive and negative electrode sheets on the separator, which can be stacked to form cells, and the cells are installed in the casing to form batteries. The cells form a battery module.

From the above description, it can be seen that the above-mentioned embodiments of the present utility model achieve the following technical effects:

1. The distance between the welding head and the welding surface is fixed instead of the distance measurement, so that the welding distance remains unchanged, and the welding distance is consistent with the focal length of the welding head, so that the distance measurement system is omitted, the structure is simple, and the welding efficiency is high. .

2. The welding station includes a frame 10 and two welding mechanisms. The two welding mechanisms are a first welding mechanism 20 and a second welding mechanism 30. The first welding mechanism 20 welds the busbars, and then the second welding mechanism The welding mechanism 30 welds the FPC, and integrates the busbar welding and the FPC welding into one welding station for continuous welding. The structure is simple, the floor space is small, the cost is low, the degree of flexibility is high, and the welding efficiency is improved.

3. The pressure cylinder part 25 of the first welding mechanism 20 can pressure-weld two poles at one time, thereby improving the welding efficiency.

4. The manipulator grabs the battery module and positions the battery module to the welding position, and the manipulator replaces the photo and ranging positioning station to simplify the overall structure.

5. Two lasers can be used, or one can be used to reduce the cost.

Obviously, the above-mentioned embodiments are only examples for clear description, and are not intended to limit the implementation manner. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. And the obvious changes or changes derived from this are still within the protection scope of the present invention.

Claims (13)

1. A welding mechanism, comprising:

a support member;

a welding head (24) disposed on the support member;

and the cylinder pressing part (25) is arranged on the supporting part and is positioned below the welding head (24), the cylinder pressing part (25) is provided with a contact surface which is in contact with the part to be welded, the contact surface forms a welding surface, and the relative position of the welding surface and the welding head (24) is fixed.

2. The welding mechanism according to claim 1, wherein said pressing cylinder member (25) comprises a fixing plate (251) and a fixing pressing cylinder (252), said fixing plate (251) is disposed on said supporting member, said fixing pressing cylinder (252) is fixed on said fixing plate (251), and a bottom surface of said fixing pressing cylinder (252) forms said welding surface.

3. The welding mechanism of claim 2, wherein said pressing cylinder member (25) further comprises an adjusting pressing cylinder (253), said adjusting pressing cylinder (253) being movably disposed on said fixing plate (251).

4. The welding mechanism according to any one of claims 1 to 3, wherein the supporting member comprises a supporting member (21) and a mounting member (22), the mounting member (22) is liftably provided on the supporting member (21), the welding head (24) and a barrel pressing member (25) are mounted on the mounting member (22), and the welding mechanism further comprises a pressing assembly (23), and the pressing assembly (23) is fixed on the supporting member (21) and connected with the mounting member (22) to drive the mounting member (22) to lift.

5. Welding mechanism according to any one of claims 1 to 3, further comprising a dust extraction assembly (26), said dust extraction assembly (26) being arranged on said drum part (25).

6. A welding station, characterized in that it comprises a frame (10) and at least one welding mechanism according to any one of claims 1 to 5.

7. The welding station according to claim 6, characterized in that the number of welding mechanisms is two and is respectively a first welding mechanism (20) and a second welding mechanism (30), the first welding mechanism (20) and the second welding mechanism (30) are arranged on the frame (10) at intervals along a preset direction, the first welding mechanism (20) is used for welding busbars of battery modules (90), and the second welding mechanism (30) is used for welding FPCs of the battery modules (90).

8. The welding station according to claim 6 or 7, further comprising a loading and unloading mechanism (70), wherein the loading and unloading mechanism (70) is arranged on one side of the rack (10), and the loading and unloading mechanism (70) is used for grabbing a battery module (90) of an upstream station to the welding mechanism and grabbing the welded battery module (90) to a downstream station.

9. The welding station of claim 8, wherein said loading and unloading mechanism (70) is a robot.

10. The welding station of claim 7, further comprising a laser (40), wherein said number of lasers (40) is one, and wherein said first welding mechanism (20) and said second welding mechanism (30) share one said laser (40), or wherein said number of lasers (40) is two, one said laser (40) being electrically connected to said first welding mechanism (20) and the other said laser (40) being electrically connected to said second welding mechanism (30).

11. The welding station of claim 10, further comprising a water chiller (50), the water chiller (50) being disposed on a side of the frame (10) and being configured to cool the welding head (24) and the laser (40).

12. The welding station of claim 6, further comprising a dust collector disposed on one side of the frame (10) and coupled to a dust extraction assembly (26) of the welding mechanism.

13. A battery manufacturing apparatus, characterized by comprising: the welding station of any of claims 6 to 12.

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