Welding assembly and welding device

Abstract

The embodiment of the utility model provides a welding assembly and a welding device, and relates to the field of welding equipment design. The welding assembly comprises a protection plate, two fixing plates and at least two pressing heads, the protection plate is connected with the pressing heads or the fixing plates, the protection plate is located on the sides, close to the laser transmitter, of the pressing heads, and the pressing heads are located between the two fixing plates; the pressure head is provided with a first through hole, the protection plate is provided with a hollow part, and the hollow part directly faces the first through hole and is communicated with the first through hole; the protection plate is provided with a first shielding part used for shielding a gap between the two adjacent pressing heads in the center line direction of the first through hole. According to the welding assembly, the first shielding part is arranged on the protection plate, so that laser can be shielded by the first shielding part when emitting to the gap between the two adjacent pressure heads due to deflection, the laser is prevented from emitting to non-welding spots of a module, and damage to the module or injury to surrounding operators is avoided.

Description

Technical Field

[0001] The utility model relates to the field of welding equipment design, in particular to a welding assembly and a welding device. Background Art

[0002] Laser welding is an efficient and precise welding method that uses a high-energy-density laser beam as a heat source. Laser welding is one of the important aspects of the application of laser material processing technology. In the 1970s, laser welding was mainly used for welding thin-walled materials and low-speed welding. The welding process is a heat conduction type, that is, the laser radiation heats the surface of the workpiece, and the surface heat diffuses to the inside through heat conduction. By controlling the width, energy, peak power and repetition frequency of the laser pulse, the workpiece is melted to form a specific molten pool. Due to its unique advantages, it has been successfully applied to the precision welding of micro or small parts.

[0003] The inventors have discovered that in the existing laser welding process, after the laser emits light, due to the influence of unstable factors such as the air environment and the stability of the equipment itself, the laser deviates from the straight-line trajectory and the direction of the laser is deflected, causing the laser to hit the non-welding point of the module, causing damage to the module welding or injury to surrounding workers and other adverse effects. Utility Model Content

[0004] The purpose of the utility model is to provide a welding equipment and a welding device, which can provide a first shielding portion on the protective plate so that when the laser is deflected and shot toward the gap between two adjacent pressure heads, it can be shielded by the first shielding portion, thereby avoiding the laser from hitting the non-welding point of the module, thereby avoiding damage to the module or injury to surrounding workers.

[0005] The embodiment of the utility model is achieved as follows:

[0006] In a first aspect, the utility model provides a welding assembly, the welding assembly comprising a protective plate, two fixing plates and a plurality of pressure heads, the protective plate is connected to the pressure head or the fixing plate, the protective plate is located on a side of the pressure head close to the laser emitter, and the pressure head is located between the two fixing plates;

[0007] The pressure head is provided with a first through hole, and the protective plate is provided with a hollow portion, which is opposite to the first through hole and is connected to the first through hole; two adjacent pressure heads have a first gap in the center line direction of the first through hole; and the protective plate is provided with a first shielding portion for shielding the first gap.

[0008] In an optional embodiment, a plurality of pressure heads are arranged into two groups, the two groups of pressure heads are spaced apart, and the two groups of pressure heads have a second gap in the center line direction of the first through hole; and the protective plate is provided with a second shielding portion for shielding the second gap.

[0009] In an optional embodiment, a third gap is provided between the fixing plate and the pressure head in the center line direction of the first through hole; and the protective plate is provided with a third shielding portion for shielding the third gap.

[0010] In an optional embodiment, a projection contour of the first through hole along the center line direction thereof is located within the hollow portion.

[0011] In an optional embodiment, the welding assembly further includes at least one connecting member, at least one elongated hole is respectively provided at both ends of the protective plate, at least one mounting hole is provided on the fixing plate, and each connecting member cooperates with an elongated hole and a mounting hole.

[0012] In an optional embodiment, the first through hole is a rectangular hole, and the protective plate moves in the length direction or width direction of the rectangular hole through the long hole.

[0013] In an optional embodiment, the pressure head is provided with a first connecting part, a second connecting part and a pressing part which are connected in sequence, the pressing part is provided with a first through hole, the second connecting part is provided with a second through hole, and the second through hole is connected to the first through hole and the hollow part.

[0014] In an optional embodiment, the welding assembly further includes a vacuum cleaner and a connecting pipe, the vacuum cleaner is connected to one end of the connecting pipe, and the other end of the connecting pipe is connected to the second through hole.

[0015] In an optional embodiment, the welding assembly further includes a baffle and a cylinder, wherein a groove is provided at one end of the baffle, and the groove is engaged with the first connecting portion; the cylinder is connected to the baffle to drive the pressure head to move in the extension direction of the baffle.

[0016] In a second aspect, the utility model provides a welding device, which includes a welding body, a laser emitter and the aforementioned welding assembly, wherein the welding body is connected to the laser emitter and the welding assembly.

[0017] The beneficial effects of the embodiments of the utility model include:

[0018] The welding assembly includes a protective plate, two fixed plates and at least two pressure heads. The protective plate is connected to the pressure head or the fixed plate. The protective plate is located on the side of the pressure head close to the laser emitter, and the pressure head is located between the two fixed plates. The pressure head is provided with a first through hole, and the protective plate is provided with a hollow portion, which is opposite to the first through hole and is conductive to the first through hole. The protective plate is provided with a first shielding portion for shielding the gap between two adjacent pressure heads in the direction of the center line of the first through hole.

[0019] The welding assembly is provided with a first shielding portion on the protective plate so that when the laser is deflected and shot toward the gap between two adjacent pressure heads, it can be shielded by the first shielding portion, thereby preventing the laser from hitting the non-welding point of the module, thereby avoiding damage to the module or injury to surrounding workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the structure of a welding assembly provided by an embodiment of the utility model from a first viewing angle;

[0022] Figure 2 A schematic diagram of the structure of a welding assembly provided by an embodiment of the utility model from a second viewing angle;

[0023] Figure 3 A schematic diagram of the structure of a welding assembly without a protective plate provided in an embodiment of the utility model;

[0024] Figure 4 A schematic diagram of the structure of the protective plate provided in the embodiment of the utility model;

[0025] Figure 5 A schematic diagram of the structure of the pressure head provided by an embodiment of the utility model at a first viewing angle;

[0026] Figure 6 A schematic diagram of the structure of the pressure head provided by the embodiment of the utility model under the second viewing angle;

[0027] Figure 7 A schematic structural diagram of a baffle provided in an embodiment of the utility model.

[0028] Icons: 100-welding assembly; 110-protective plate; 111-hollow portion; 112-first shielding portion; 113-second shielding portion; 114-third shielding portion; 115-long hole; 120-pressing head; 121-first connecting portion; 122-second connecting portion; 123-pressing portion; 124-first through hole; 125-second through hole; 130-vacuum cleaner; 140-connecting pipe; 160-baffle; 161-groove; 170-cylinder; 180-fixing plate; 200-laser emitter. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0032] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0033] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0034] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the existing laser welding process, after the laser emits light, due to the influence of unstable factors such as the air environment and the stability of the equipment itself, the laser deviates from the straight trajectory and the direction of the laser is deflected, causing the laser to hit the non-welding point of the module, causing damage to the module welding or injury to surrounding workers and other adverse effects.

[0036] Based on the above problems, the utility model provides a welding device, which includes a welding body, a laser emitter 200 and a welding assembly 100, and the welding body is connected to the laser emitter 200 and the welding assembly 100.

[0037] The welding assembly 100 will be described in detail below:

[0038] Please refer to Figure 1-Figure 4 , Figure 1 A schematic structural diagram of a welding assembly 100 provided in an embodiment of the utility model from a first viewing angle; Figure 2 A schematic structural diagram of a welding assembly 100 provided in an embodiment of the utility model from a second viewing angle; Figure 3 A schematic diagram of the structure of the welding assembly 100 without the protective plate 110 provided in an embodiment of the utility model; Figure 4 A schematic structural diagram of a protective plate 110 provided in an embodiment of the present utility model.

[0039] The welding assembly 100 includes a protective plate 110, two fixed plates 180 and at least two pressing heads 120. The protective plate 110 is connected to the pressing head 120 or the fixed plate 180. The protective plate 110 is located on the side of the pressing head 120 close to the laser emitter 200, and the pressing head 120 is located between the two fixed plates 180. The pressing head 120 is provided with a first through hole 124, and the protective plate 110 is provided with a hollow portion 111. The hollow portion 111 is opposite to the first through hole 124 and is connected to the first through hole 124. The protective plate 110 is provided with a first shielding portion 112 for shielding the gap between two adjacent pressing heads 120 in the center line direction of the first through hole 124.

[0040] It should be noted that the welding assembly 100 is provided with a ram 120 bracket, which is connected to the ram 120 and the fixing plate 180 , so that the ram 120 is fixed by the fixing plate 180 and the ram 120 bracket, and the ram 120 is located between the two fixing plates 180 .

[0041] Specifically, the protective plate 110 can be connected to the pressure head 120 or the fixing plate 180, and is located on the side of the pressure head 120 close to the laser emitter 200; wherein, the protective plate 110 is provided with a hollow portion 111, and the pressure head 120 is provided with a first through hole 124, and the hollow portion 111 is directly opposite to the first through hole 124 and is connected to the first through hole 124, so that the laser emitted by the laser emitter 200 can pass through the hollow portion 111 and the first through hole 124 and hit the battery module. Two adjacent pressure heads 120 have a first gap in the direction of the center line of the first through hole 124, and the protective plate 110 is provided with a first shielding portion 112, and the first shielding portion 112 is directly opposite to the first gap, and is used to shield the first gap.

[0042] The working principle of the pressure head assembly in the welding assembly 100 provided in this embodiment is as follows:

[0043] Laser transmitter 200 Figure 1 The laser is emitted in the direction indicated by the middle arrow, and the protection plate 110 is disposed between the laser emitter 200 and the pressure head 120, and is connected to the pressure head 120 or the fixing plate 180. The protection plate 110 is provided with a hollow portion 111 that is opposite to the first through hole 124 of the pressure head 120 and is connected to the first through hole 124, so that the laser emitted by the laser emitter 200 can pass through the hollow portion 111 and the first through hole 124 to hit the battery module located below the pressure head 120.

[0044] The first shielding portion 112 shields the first gap between the two pressing heads 120 in the center line direction of the first through hole 124, thereby shielding the deflected laser and preventing the laser from passing through the first gap and hitting a non-welding point, thereby avoiding damage to the module or injury to surrounding workers.

[0045] For further information, please refer to Figure 2 and Figure 3 The plurality of pressing heads 120 are arranged in two groups, and the two groups of pressing heads 120 are arranged at intervals, and the two groups of pressing heads 120 have a second gap in the center line direction of the first through hole 124; the protection plate 110 is provided with a second shielding portion 113 for shielding the second gap. The fixing plate 180 and the pressing head 120 have a third gap in the center line direction of the first through hole 124; the protection plate 110 is provided with a third shielding portion 114 for shielding the third gap.

[0046] In other embodiments, the plurality of pressing heads 120 may be arranged in a plurality of groups, and two adjacent groups of pressing heads 120 have a second gap in the direction of the center line of the first through hole 124. In this embodiment, by providing the second shielding portion 113 and the third shielding portion 114, the welding assembly 100 can prevent the deflected laser from passing through the second gap or the third gap, thereby preventing the laser from hitting the non-welding point of the battery module, causing damage to the module or injury to surrounding workers.

[0047] According to the above configuration, the projection profile of the first through hole 124 along the center line direction thereof is located in the hollow portion 111. Specifically, in the present embodiment, the hollow portion 111 and the first through hole 124 are both square, and the length and width of the hollow portion 111 are both greater than the length and width of the first through hole 124 and less than the minimum side length of the pressure head 120; in other embodiments, the hollow portion 111 and the first through hole 124 may also be circular, and the centers of the hollow portion 111 and the first through hole 124 are located on the same axis, and the radius of the hollow portion 111 is greater than the radius of the first through hole 124 and less than the minimum side length of the pressure head 120.

[0048] The welding assembly 100 locates the projection profile of the first through hole 124 along the center line direction within the hollow portion 111 so that most of the laser light passing through the hollow portion 111 can simultaneously pass through the first through hole 124 and hit the welding point of the battery cell module, thereby improving the utilization rate of the laser light; if the laser light is deflected after passing through the hollow portion 111, the deflected laser light will hit the pressure head 120, so that the pressure head 120 can be used to shield the deflected laser light to prevent the laser light from hitting the non-welding point of the battery cell module, causing damage to the module or injury to surrounding workers.

[0049] Furthermore, the welding assembly 100 further includes at least one connecting member, at least one elongated hole 115 is respectively provided at both ends of the protective plate 110, at least one mounting hole is provided at the fixing plate 180, and each connecting member cooperates with one elongated hole 115 and one mounting hole. In this embodiment, the extending direction of the elongated hole 115 is parallel to the arrangement direction of the pressure head 120, so that the protective plate 110 can move in the arrangement direction of the pressure head 120. In other embodiments, the extending direction of the elongated hole 115 is perpendicular to the arrangement direction of the pressure head 120, or the extending direction of the elongated hole 115 is at an angle relative to the arrangement direction of the pressure head 120.

[0050] According to the above configuration, the first through hole 124 is a rectangular hole, and the protective plate 110 moves in the length direction or width direction of the rectangular hole through the long hole 115, so that the position of the protective plate 110 can be adjusted according to actual usage.

[0051] For further information, please refer to Figure 5 and Figure 6 , Figure 5 A schematic diagram of the structure of the pressure head 120 provided in an embodiment of the utility model at a first viewing angle; Figure 6The schematic diagram of the structure of the pressure head 120 provided by the embodiment of the utility model from the second viewing angle is shown. The pressure head 120 is provided with a first connecting portion 121, a second connecting portion 122 and a pressing portion 123 connected in sequence, the pressing portion 123 is provided with a first through hole 124, the second connecting portion 122 is provided with a second through hole 125, and the second through hole 125 is connected to the first through hole 124 and the hollow portion 111.

[0052] Specifically, the pressing head 120 is connected to the pressing head 120 bracket through the first connecting part 121, and the pressing part 123 is used to press the battery cell on the side away from the first connecting part 121. During the welding process, the pressing head 120 moves downward and abuts against the battery cell, thereby squeezing the battery cell, thereby turning on the laser generator to weld the pole ear; after welding is completed, the pressing part 123 moves upward and separates from the battery cell.

[0053] According to the above configuration, the welding assembly 100 further includes a vacuum cleaner 130 and a connecting tube 140, wherein the vacuum cleaner 130 is connected to one end of the connecting tube 140, and the other end of the connecting tube 140 is connected to the second through hole 125. Specifically, during the welding process, when the laser hits the battery core, dust will be generated, so the present embodiment uses the vacuum cleaner 130 to absorb the dust. Driven by the vacuum cleaner 130, the dust passes through the first through hole 124, the second through hole 125 and the connecting tube 140 in sequence, and then reaches the vacuum cleaner 130 to avoid pollution to the environment.

[0054] Please refer to Figure 7 , Figure 7 A schematic diagram of the structure of the baffle 160 provided in an embodiment of the utility model. The welding assembly 100 also includes a baffle 160 and a cylinder 170. A groove 161 is provided at one end of the baffle 160, and the groove 161 is engaged with the first connecting portion 121; the cylinder 170 is connected to the baffle 160 and the connecting pipe 140, and is used to drive the pressure head 120 to move in the extending direction of the baffle 160. Specifically, the baffle 160 is used to block the deflected laser to prevent the laser from hitting the cylinder 170 after deflection. The cylinder 170 is used to drive the pressure head 120 to move in the center line direction of the first through hole 124, so that the pressure head 120 can abut or separate from the battery cell. In order to ensure the stability of the pressure head 120 and avoid a gap between the baffle 160 and the pressure head 120, so that the laser hits the cylinder 170 after deflection, the baffle 160 is provided with a groove 161 at one end close to the pressure head 120 and is engaged with the first connecting member.

[0055] In summary, the welding assembly 100 provided in this embodiment includes a protective plate 110, two fixed plates 180 and at least two pressure heads 120. The protective plate 110 is connected to the pressure head 120 or the fixed plate 180. The protective plate 110 is located on the side of the pressure head 120 close to the laser emitter 200, and the pressure head 120 is located between the two fixed plates 180; the pressure head 120 is provided with a first through hole 124, and the protective plate 110 is provided with a hollow portion 111, which is opposite to the first through hole 124 and is conductive to the first through hole 124; the protective plate 110 is provided with a first shielding portion 112 for shielding the gap between two adjacent pressure heads 120 in the direction of the center line of the first through hole 124. The welding assembly 100 is provided with a first shielding portion 112 on the protective plate 110, so that when the laser is deflected and emitted to the gap between two adjacent pressing heads 120, it can be shielded by the first shielding portion 112. In this embodiment, a second shielding portion 113 and a third shielding portion 114 are provided, so that the welding assembly 100 can prevent the deflected laser from passing through the second gap or the third gap, thereby avoiding the laser from hitting the non-welding point of the module, thereby avoiding damage to the module or injury to surrounding workers.

[0056] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A welding assembly, characterized in that: The welding assembly comprises a protective plate, two fixing plates and a plurality of pressing heads, wherein the protective plate is connected to the pressing head or the fixing plate, the protective plate is located on a side of the pressing head close to the laser emitter, and the pressing head is located between the two fixing plates; The pressure head is provided with a first through hole, and the protective plate is provided with a hollow portion, which is opposite to the first through hole and is connected to the first through hole; two adjacent pressure heads have a first gap in the center line direction of the first through hole; and the protective plate is provided with a first shielding portion for shielding the first gap.

2. The welding assembly according to claim 1, characterized in that: The plurality of pressure heads are arranged into two groups, the two groups of pressure heads are arranged at intervals, and the two groups of pressure heads have a second gap in the center line direction of the first through hole; the protective plate is provided with a second shielding portion for shielding the second gap.

3. The welding assembly according to claim 1, characterized in that: A third gap is formed between the fixing plate and the pressure head in the center line direction of the first through hole; and the protection plate is provided with a third shielding portion for shielding the third gap.

4. The welding assembly according to any one of claims 1 to 3, characterized in that: The projection contour of the first through hole along the center line direction is located in the hollow portion.

5. The welding assembly according to any one of claims 1 to 3, characterized in that: The welding assembly also includes at least one connecting member, at least one long hole is respectively provided at both ends of the protective plate, and at least one mounting hole is provided at the fixing plate, and each of the connecting members cooperates with one of the long holes and one of the mounting holes.

6. The welding assembly according to claim 5, characterized in that: The first through hole is a rectangular hole, and the protective plate moves in the length direction or the width direction of the rectangular hole through the long hole.

7. The welding assembly according to any one of claims 1 to 3, characterized in that: The pressure head is provided with a first connecting portion, a second connecting portion and a pressing portion which are connected in sequence, the pressing portion is provided with a first through hole, the second connecting portion is provided with a second through hole, and the second through hole is connected to the first through hole and the hollow portion.

8. The welding assembly according to claim 7, characterized in that: The welding assembly further includes a vacuum cleaner and a connecting pipe, wherein the vacuum cleaner is connected to one end of the connecting pipe, and the other end of the connecting pipe is connected to the second through hole.

9. The welding assembly according to claim 7, characterized in that: The welding assembly also includes a baffle and a cylinder. A groove is provided at one end of the baffle, and the groove is clamped with the first connecting portion. The cylinder is connected to the baffle and is used to drive the pressure head to move in the extension direction of the baffle.

10. A welding device, characterized in that: The welding device comprises a welding body, a laser emitter and a welding assembly as described in any one of claims 1 to 9, wherein the welding body is connected to the laser emitter and the welding assembly.

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