Welding device and battery housing

Abstract

The utility model provides a kind of welding device.The welding device of utility model embodiment includes positioning table, adjusting assembly, welding assembly and detection component and control module.Wherein, positioning table is used to place battery shell, battery shell has weld joint;Adjusting assembly is connected with positioning table, adjusting assembly is used to drive positioning table to move;Welding assembly is used to emit laser and form welding pool on battery shell;Detection component is used to collect the position information of welding pool and the position information of weld joint;Control module controls adjusting assembly to move according to the relative position relationship of welding pool and weld joint, to make welding pool real-time be located on weld joint.The welding device of utility model embodiment can avoid weld joint deviating from laser welding path, so that welding pool real-time be located on weld joint, improve the welding quality of battery shell.

Description

Technical Field

[0001] This utility model relates to the field of battery casing welding technology, and in particular to a welding device and a battery casing. Background Technology

[0002] In related technologies, battery casings are typically encapsulated using laser welding. Since battery casings are usually thin, they are easily deformed by the heat of the laser during the welding process. When the laser welding trajectory remains unchanged, the deformation of the battery casing causes the weld pool formed by the laser on the battery casing to deviate from the weld seam, thereby reducing the welding quality of the battery casing. Utility Model Content

[0003] This utility model provides a welding device to solve the problem of the weld pool deviating from the weld seam, thereby improving the welding quality of the battery casing.

[0004] The welding apparatus of this utility model embodiment includes: A positioning platform for placing a battery casing, the battery casing having weld seams; An adjustment component is connected to the positioning stage and is used to move the positioning stage. A welding assembly for emitting a laser to form a weld pool on the battery casing; A detection component, wherein the detection component is used to collect the position information of the weld pool and the position information of the weld; The control module controls the movement of the adjustment component based on the relative positional relationship between the weld pool and the weld, so that the weld pool is positioned on the weld in real time.

[0005] The welding device of this utility model embodiment, by setting an adjustment component, a detection component, and a control module, can monitor the position information of the weld pool and the weld in real time during the welding process. The control module can analyze the position information of the weld pool and the weld collected by the detection component and determine the relative positional relationship between the weld pool and the weld. At the same time, based on the relative positional relationship between the weld pool and the weld, the adjustment component is controlled to move the positioning stage so that the weld pool is located on the weld in real time.

[0006] Therefore, the welding device of this utility model embodiment can prevent the weld from deviating from the laser welding path, so that the weld pool is located on the weld in real time, thereby improving the welding quality of the battery casing.

[0007] In some embodiments, the adjustment component includes a lateral adjustment component and a longitudinal adjustment component; The lateral adjustment component is connected to the positioning stage to move the positioning stage laterally, and the longitudinal adjustment component is connected to the lateral adjustment component to move the lateral adjustment component longitudinally, thereby moving the positioning stage longitudinally; or The longitudinal adjustment component is connected to the positioning stage to drive the positioning stage to move longitudinally, and the lateral adjustment component is connected to the longitudinal adjustment component to drive the longitudinal adjustment component to move laterally, thereby driving the positioning stage to move laterally.

[0008] In some embodiments, the lateral adjustment component includes a micro-motion platform, and the longitudinal adjustment component includes a voice coil motor; The lateral adjustment end of the micro-motion platform is connected to the positioning stage to drive the positioning stage to move laterally. The longitudinal adjustment end of the voice coil motor is connected to the lateral fixed end of the micro-motion platform to drive the micro-motion platform to move longitudinally, thereby driving the positioning stage to move longitudinally; or The longitudinal adjustment end of the voice coil motor is connected to the positioning stage to drive the positioning stage to move longitudinally. The lateral adjustment end of the micro-motion platform is connected to the longitudinal fixed end of the voice coil motor to drive the voice coil motor to move laterally, thereby driving the positioning stage to move laterally.

[0009] In some embodiments, the positioning stage includes a base, a reference positioning block, and a movable positioning block. The reference positioning block has a reference positioning surface, which is adapted to abut against the battery casing; The movable positioning block has a movable positioning surface, and the movable positioning block can move between a first position and a second position. In the first position, the movable positioning surface abuts against the battery housing, and in the second position, the movable positioning surface disengages from the battery housing.

[0010] In some embodiments, the reference positioning block is a single block, and the moving positioning block is two blocks; Each reference positioning block has two reference positioning surfaces, namely a first reference positioning surface and a second reference positioning surface, which are perpendicular to each other. The two movable positioning blocks have a first movable positioning surface and a second movable positioning surface, respectively. The first movable positioning surface and the second movable positioning surface are perpendicular to each other. The first movable positioning surface is parallel to the first reference positioning surface, and the second movable positioning surface is parallel to the second reference positioning surface.

[0011] In some embodiments, the base is provided with heat dissipation copper pipes, which are distributed in a serpentine pattern.

[0012] In some embodiments of the present invention, the welding apparatus further includes a dust removal component, the dust removal component including a dust suction element having a dust suction port disposed adjacent to the weld pool; The dust removal assembly also includes a moving component connected to the dust collection component. The moving component is used to drive the dust collection component to move so that the dust collection port follows the weld pool.

[0013] In some embodiments, the distance between the dust extraction port and the weld pool is 3-5 mm.

[0014] In some embodiments, the detection component includes a CCD camera positioned above the battery casing, the CCD camera being used to acquire position information of the weld and position information of the weld pool.

[0015] This utility model embodiment also provides a battery casing.

[0016] The battery casing of this embodiment is a battery casing welded by the welding device described in the above embodiment. Attached Figure Description

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

[0018] Figure 1 This is a schematic diagram of the welding device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the welding pool formed on the battery casing by the welding device according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the welding device according to another embodiment of the present invention; Figure 4 This is a top view of the welding apparatus according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the dust removal component of the welding device according to an embodiment of the present invention; Figure 6 This is a flow control diagram of the welding apparatus according to an embodiment of the present invention.

[0019] In the picture: 100. Welding equipment; 200. Battery casing; 210. Weld pool; 220. Weld seam; 1. Positioning stage; 101. Base; 102. Reference positioning block; 1021. Reference positioning surface; 10211. First reference positioning surface; 10212. Second reference positioning surface; 103. Moving positioning block; 1031. Moving positioning surface; 10311. First moving positioning surface; 10312. Second moving positioning surface; 2. Adjustment components; 201. Lateral adjustment component; 2011. Micro-motion platform; 202. Longitudinal adjustment component; 2021. Voice coil motor; 3. Welding components; 4. Detection components; 401. CCD camera; 5. Control module; 6. Dust removal components; 601. Dust collection components; 6011. Dust collection port; 602. Moving components. Detailed Implementation

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

[0021] In the description of this utility model, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal encapsulation of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] In order to solve the problem of the weld pool 210 deviating from the weld seam 220, the welding quality of the battery casing 200 is improved.

[0024] This utility model provides a welding device 100.

[0025] The welding device 100 of this utility model embodiment includes a positioning table 1, an adjustment component 2, a welding component 3, a detection component 4, and a control module 5.

[0026] The positioning platform 1 is used to place the battery housing 200, and the battery housing 200 has a weld 220. Adjustment component 2 is connected to positioning stage 1, and adjustment component 2 is used to move positioning stage 1; Welding component 3 is used to emit a laser to form a weld pool 210 on the battery casing 200; Detection component 4 is used to collect the position information of the weld pool 210 and the weld 220; The control module 5 controls the movement of the adjustment component 2 according to the relative positional relationship between the weld pool 210 and the weld 220, so that the weld pool 210 is located on the weld 220 in real time.

[0027] The welding apparatus 100 of this utility model embodiment, by setting up an adjustment component 2, a detection component 4, and a control module 5, can monitor the position information of the weld pool 210 and the weld 220 in real time during the welding process. The control module 5 can analyze the position information of the weld pool 210 and the weld 220 collected by the detection component 4 and determine the relative positional relationship between the weld pool 210 and the weld 220. At the same time, based on the relative positional relationship between the weld pool 210 and the weld 220, the adjustment component 2 is controlled to move the positioning table 1 so that the weld pool 210 is located on the weld 220 in real time.

[0028] Therefore, the welding device 100 of this utility model embodiment can prevent the weld 220 from deviating from the laser welding path, so that the welding pool 210 is located on the weld 220 in real time, thereby improving the welding quality of the battery casing 200.

[0029] The following is in conjunction with the appendix Figure 1-5 The welding apparatus 100 of this utility model embodiment is further described.

[0030] The welding device 100 of this utility model embodiment includes a positioning table 1, an adjustment component 2, a welding component 3, a detection component 4, and a control module 5.

[0031] like Figure 1 and 3 As shown, the positioning stage 1 is used to place the battery housing 200, wherein the battery housing 200 has a weld seam 220.

[0032] It is understood that weld 220 is the joint between different parts that make up the battery housing 200. For example, the battery housing 200 includes an upper cover and a lower cover, and weld 220 is the joint between the upper cover and the lower cover.

[0033] Adjustment component 2 is connected to positioning stage 1, and adjustment component 2 is used to drive positioning stage 1 to move.

[0034] like Figure 1 and 3 As shown, the positioning stage 1 is mounted on the adjustment component 2. It can be understood that the adjustment component 2 can drive the positioning stage 1 to move in any direction. For example, the adjustment component 2 can move in the horizontal direction and also in the vertical direction. Moving in the horizontal direction means moving on a horizontal plane, and moving in the vertical direction means moving in the vertical direction.

[0035] The welding component 3 is used to emit a laser to form a weld pool 210 on the battery casing 200. The high temperature generated by the laser emitted by the welding component 3 when it irradiates the battery casing 200 will melt the battery casing 200 and form a weld pool 210 on the battery casing 200.

[0036] Detection component 4 is used to collect the position information of the weld pool 210 and the weld 220; The control module 5 controls the movement of the adjustment component 2 according to the relative positional relationship between the weld pool 210 and the weld 220, so that the weld pool 210 is located on the weld 220 in real time.

[0037] Optionally, the control module 5 can be an electronic device such as a microprocessor, PLC, or CPU that can perform data analysis and send instructions. It is understandable that the detection component 4 can monitor the position information of the weld pool 210 and the weld 220 in real time during the welding process. The control module 5 can analyze the position information of the weld pool 210 and the weld 220 collected by the detection component 4 and obtain the relative positional relationship between the weld pool 210 and the weld 220. At the same time, based on the relative positional relationship between the weld pool 210 and the weld 220, the control module 5 can control the adjustment component 2 to move the positioning stage 1 so that the weld pool 210 is located on the weld 220 in real time.

[0038] In some embodiments, the adjustment component 2 includes a lateral adjustment component 201 and a longitudinal adjustment component 202.

[0039] like Figure 1 As shown, the lateral adjustment component 201 is connected to the positioning stage 1 to move the positioning stage 1 laterally, and the longitudinal adjustment component 202 is connected to the lateral adjustment component 201 to move the lateral adjustment component 201 longitudinally, thereby moving the positioning stage 1 longitudinally. Alternatively, like Figure 3 As shown, the longitudinal adjustment component 202 is connected to the positioning stage 1 to drive the positioning stage 1 to move longitudinally, and the lateral adjustment component 201 is connected to the longitudinal adjustment component 202 to drive the longitudinal adjustment component 202 to move laterally, thereby driving the positioning stage 1 to move laterally.

[0040] The welding device 100 of this utility model embodiment is provided with a horizontal adjustment component 201 and a vertical adjustment component 202, so that the adjustment component 2 can drive the positioning table 1 to move in the horizontal and vertical directions.

[0041] For example, such as Figure 1 and 3 As shown, the lateral movement component 602 can drive the positioning stage 1 to move in the X and Y directions, and the longitudinal movement component 602 can drive the positioning stage 1 to move in the Z direction. The X, Y, and Z directions are perpendicular to each other, that is, the adjustment component 2 can drive the positioning stage 1 to move in the X, Y, and Z directions.

[0042] Furthermore, when the weld pool 210 deviates from the weld seam 220, the adjustment component 2 can promptly adjust the weld pool 210 onto the weld seam 220, thereby improving the welding quality of the battery casing 200.

[0043] like Figure 6 As shown, in order to facilitate the control module 5 to control the lateral movement component 602 and the longitudinal movement component 602, the lateral movement component 602 and the control module 5 are connected by a signal, and the longitudinal movement component 602 and the control module 5 are also connected by a signal.

[0044] Furthermore, the lateral adjustment component 201 includes a micro-motion platform 2011, and the longitudinal adjustment component 202 includes a voice coil motor 2021; like Figure 1 As shown, the lateral adjustment end of the micro-motion platform 2011 is connected to the positioning stage 1 to drive the positioning stage 1 to move laterally, and the longitudinal adjustment end of the voice coil motor 2021 is connected to the lateral fixed end of the micro-motion platform 2011 to drive the micro-motion platform 2011 to move longitudinally, thereby driving the positioning stage 1 to move longitudinally; or, like Figure 3 As shown, the longitudinal adjustment end of the voice coil motor 2021 is connected to the positioning stage 1 to drive the positioning stage 1 to move longitudinally, and the lateral adjustment end of the micro-motion platform 2011 is connected to the longitudinal fixed end of the voice coil motor 2021 to drive the voice coil motor 2021 to move laterally, thereby driving the positioning stage 1 to move laterally.

[0045] The welding device 100 of this utility model embodiment, by setting a micro-motion platform 2011 and a voice coil motor 2021, enables the adjustment component 2 to drive the positioning table 1 to move in the horizontal and vertical directions, thereby enabling the welding pool 210 to be adjusted to the weld seam 220 in a timely manner when the welding pool 210 deviates from the weld seam 220, thus improving the welding quality of the battery casing 200.

[0046] like Figure 4 As shown, in some embodiments, the positioning stage 1 includes a base 101, a reference positioning block 102, and a movable positioning block 103. The reference positioning block 102 has a reference positioning surface 1021, which is adapted to abut against the battery casing 200; The movable positioning block 103 has a movable positioning surface 1031. The movable positioning block 103 can move between a first position and a second position. In the first position, the movable positioning surface 1031 abuts against the battery housing 200. In the second position, the movable positioning surface 1031 disengages from the battery housing 200.

[0047] This utility model embodiment provides a reference positioning block 102 and a movable positioning block 103 on the base 101. On the one hand, the battery housing 200 can be positioned and fixed on the base 101. On the other hand, the movable positioning block 103 can move from the first position to the second position after the battery housing 200 is welded, making it easy to remove the welded battery housing 200.

[0048] In some embodiments, the reference positioning block 102 is a single block, and the moving positioning block 103 is two blocks; A single reference positioning block 102 has two reference positioning surfaces 1021, namely a first reference positioning surface 10211 and a second reference positioning surface 10212, which are perpendicular to each other. The two movable positioning blocks 103 have movable positioning surfaces 10311 and 10312, respectively. The first movable positioning surface 10311 and the second movable positioning surface 10312 are perpendicular to each other. The first movable positioning surface 10311 is parallel to the first reference positioning surface 10211, and the second movable positioning surface 10312 is parallel to the second reference positioning surface 10212.

[0049] like Figure 4As shown, the battery housing 200 has a square structure. The side wall of the battery housing 200 includes four connected outer wall surfaces with adjacent surfaces perpendicular to each other. The first reference positioning surface 10211, the second reference positioning surface 10212, the first movable positioning surface 10311, and the second movable positioning surface 10312 are respectively adapted to abut against the four outer wall surfaces of the battery housing 200 to achieve the effect of positioning the battery housing 200.

[0050] In some embodiments, a heat dissipation copper pipe (not shown) is provided inside the base 101.

[0051] The welding device 100 of this utility model can reduce the temperature of the base 101 by setting a heat dissipation copper pipe inside the base 101, thereby reducing the temperature of the battery casing 200 during the welding process.

[0052] Preferably, the heat dissipation copper pipes are distributed in a serpentine pattern, which is more conducive to heat dissipation of the battery casing 200 through the base 101.

[0053] In some embodiments, such as Figure 5 As shown, the welding device 100 of this utility model embodiment also includes a dust removal component 6, which includes a dust suction component 601. The dust suction component 601 has a dust suction port 6011, which is disposed adjacent to the welding molten pool 210. The dust removal assembly 6 also includes a moving assembly 602, which is connected to the dust collection component 601. The moving assembly 602 is used to drive the dust collection component 601 to move so that the dust collection port 6011 follows the weld pool 210.

[0054] Furthermore, the distance between the dust extraction port 6011 and the weld pool 210 is 3-5mm.

[0055] The welding device 100 of this utility model embodiment can suck up the dust generated during welding by setting up the dust removal component 6, so as to avoid environmental pollution. At the same time, the moving component 602 drives the dust suction component 601 to move, so that the dust suction port 6011 is always close to the welding molten pool 210, thereby further effectively sucking up the dust generated during the welding process and greatly improving the dust removal effect.

[0056] In some embodiments, the detection component 4 includes a CCD camera 401, which is disposed above the battery housing 200. The CCD camera 401 is used to acquire position information of the weld 220 and position information of the weld pool 210.

[0057] The CCD camera 401 can detect whether the weld pool 210 deviates from the weld seam 220 in real time by collecting the position information of the weld seam 220 and the position information of the weld pool 210. When the weld pool 210 deviates from the weld seam 220, it can adjust the weld pool 210 to the weld seam 220 in time, thereby improving the welding quality of the battery casing 200.

[0058] This utility model also provides a battery casing 200.

[0059] The battery casing 200 of this utility model embodiment is a battery casing 200 welded by the welding device 100 described in the above embodiment.

[0060] The battery casing 200 of this utility model embodiment can be welded using the welding device 100 described in the above embodiment, which can greatly improve the welding quality of the battery casing 200 of this utility model embodiment.

[0061] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. A welding apparatus, characterized in that, include: Positioning platform (1), the positioning platform (1) is used to place the battery housing, the battery housing having a weld (220). Adjustment component (2), which is connected to the positioning stage (1), is used to drive the positioning stage (1) to move; Welding assembly (3), which is used to emit a laser to form a weld pool (210) on the battery casing; The detection component (4) is used to collect the position information of the weld pool (210) and the position information of the weld (220); The control module (5) controls the adjustment component (2) to move according to the relative positional relationship between the weld pool (210) and the weld (220) so that the weld pool (210) is located on the weld (220) in real time.

2. The welding apparatus according to claim 1, characterized in that, The adjustment component (2) includes a lateral adjustment component (201) and a longitudinal adjustment component (202); The lateral adjustment component (201) is connected to the positioning stage (1) to move the positioning stage (1) laterally. The longitudinal adjustment component (202) is connected to the lateral adjustment component (201) to move the lateral adjustment component (201) longitudinally, thereby moving the positioning stage (1) longitudinally. The longitudinal adjustment component (202) is connected to the positioning stage (1) to drive the positioning stage (1) to move longitudinally. The lateral adjustment component (201) is connected to the longitudinal adjustment component (202) to drive the longitudinal adjustment component (202) to move laterally, thereby driving the positioning stage (1) to move laterally.

3. The welding apparatus according to claim 2, characterized in that, The lateral adjustment component (201) includes a micro-motion platform (2011), and the longitudinal adjustment component (202) includes a voice coil motor (2021). The lateral adjustment end of the micro-motion platform (2011) is connected to the positioning stage (1) to drive the positioning stage (1) to move laterally. The longitudinal adjustment end of the voice coil motor (2021) is connected to the lateral fixed end of the micro-motion platform (2011) to drive the micro-motion platform (2011) to move longitudinally, thereby driving the positioning stage (1) to move longitudinally; or The longitudinal adjustment end of the voice coil motor (2021) is connected to the positioning stage (1) to drive the positioning stage (1) to move longitudinally. The lateral adjustment end of the micro-motion platform (2011) is connected to the longitudinal fixed end of the voice coil motor (2021) to drive the voice coil motor (2021) to move laterally, thereby driving the positioning stage (1) to move laterally.

4. The welding apparatus according to claim 1, characterized in that, The positioning stage (1) includes a base (101), a reference positioning block (102), and a moving positioning block (103). The reference positioning block (102) has a reference positioning surface (1021), which is adapted to abut against the battery casing; The movable positioning block (103) has a movable positioning surface (1031). The movable positioning block (103) can move between a first position and a second position. In the first position, the movable positioning surface (1031) abuts against the battery casing. In the second position, the movable positioning surface (1031) disengages from the battery casing.

5. The welding apparatus according to claim 4, characterized in that, The reference positioning block (102) is a single unit, and the moving positioning block (103) consists of two units; The single reference positioning block (102) has two reference positioning surfaces (1021), which are a first reference positioning surface (10211) and a second reference positioning surface (10212), respectively. The first reference positioning surface (10211) and the second reference positioning surface (10212) are perpendicular to each other. The two movable positioning blocks (103) have movable positioning surfaces (1031) that are a first movable positioning surface (10311) and a second movable positioning surface (10312), respectively. The first movable positioning surface (10311) and the second movable positioning surface (10312) are perpendicular to each other. The first movable positioning surface (10311) is parallel to the first reference positioning surface (10211), and the second movable positioning surface (10312) is parallel to the second reference positioning surface (10212).

6. The welding apparatus according to claim 4, characterized in that, The base (101) is provided with heat dissipation copper pipes, which are distributed in a serpentine pattern.

7. The welding apparatus according to claim 1, characterized in that, It also includes a dust removal assembly (6), which includes a dust suction component (601) having a dust suction port (6011) disposed adjacent to the weld pool (210); The dust removal component (6) further includes a moving component (602), which is connected to the dust suction component (601). The moving component (602) is used to drive the dust suction component (601) to move so that the dust suction port (6011) follows the welding molten pool (210).

8. The welding apparatus according to claim 7, characterized in that, The distance between the dust extraction port (6011) and the welding pool (210) is 3-5 mm.

9. The welding apparatus according to claim 1, characterized in that, The detection component (4) includes a CCD camera (401), which is located above the battery casing. The CCD camera (401) is used to collect the position information of the weld (220) and the position information of the weld pool (210).

10. A battery casing, characterized in that, The battery casing is a battery casing (200) welded by the welding apparatus (100) according to any one of claims 1-9.

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