Distance measuring assembly for soft package battery welding

Abstract

The invention relates to the technical field of battery processing, in particular to a distance measuring assembly for soft package battery welding, which is provided with a distance measuring assembly arranged on a base frame, and the distance measuring assembly is used for penetrating through a small-caliber position of a welding accessory to measure and position a soft package battery welding position; the distance measuring assembly comprises four distance measuring instruments which are arranged in a staggered and inclined mode so that laser lines of the four distance measuring instruments can penetrate through the small-caliber welding accessory in a crossed and staggered mode. The problem that in the prior art, in the laser welding machining process of a soft package battery, accurate positioning is difficult to guarantee the machining quality of the soft package battery is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery processing, and particularly relates to a ranging component for soft-pack battery welding. Background Art

[0002] In the production process of soft-pack batteries, welding technology plays a crucial role. Key components of the battery, including electrodes, tabs, solid electrolyte membranes, and battery casings, etc., all need to be connected through the welding process to ensure the electrical performance and structural stability of the battery. A high-quality welding process can guarantee the reliability of the electrical connection between the components inside the battery, reduce resistance, thereby improving the charge and discharge efficiency and cycle life of the battery. At the same time, the welding technology also ensures the sealing of the battery casing, effectively preventing the leakage of electrolytes, and thus enhancing the safety performance of the battery.

[0003] In the current laser welding technology for soft-pack batteries, precise positioning of the welding equipment is the key to ensuring welding quality, that is, to maintain the processing quality of soft-pack batteries. Although there are currently various positioning technologies and methods, they still have certain limitations. For example, the recognition accuracy of some vision positioning systems will be negatively affected under the occlusion of the shielding gas and the shielding nozzle; while for the mechanical positioning method, due to the small size and complex shape of the battery components, it is difficult to achieve high-precision positioning. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem that it is difficult to accurately position during the laser welding process of soft-pack batteries in the prior art to ensure the processing quality of soft-pack batteries, and to provide a ranging component for soft-pack battery welding.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is: a ranging component for soft-pack battery welding, which has a ranging component provided on a base frame. The ranging component is used to pass through the small-diameter part of the welding auxiliary part to measure and position the welding position of the soft-pack battery; The ranging component includes four rangefinders arranged in a staggered and inclined manner, so that the laser lines of the four rangefinders cross and pass through the small-diameter welding auxiliary part in a staggered manner.

[0006] As a further optimization of the ranging component for soft-pack battery welding of the present invention: the four rangefinders are arranged in pairs in sequence along the distribution direction of the welding position of the soft-pack battery. The two groups of rangefinders are respectively provided on two bearing plates, and the two bearing plates are both provided on a connecting plate. The connecting plate is driven by a pushing cylinder provided on the base frame to be arranged along the distribution direction of the welding position of the soft-pack battery.

[0007] As a further optimization of the distance measuring assembly for soft-pack battery welding of the present invention: the distance measuring instrument is arranged in a rectangular shape, a group of opposite ends of the distance measuring instrument and the ends facing the laser generating port are connected together with the arc groove, the arc groove is opened on the supporting plate, and a group of ends of the distance measuring instrument facing away from the arc groove are rotatably connected with the supporting plate.

[0008] As a further optimization of the distance measuring assembly for welding a soft-pack battery of the present invention: the welding auxiliary part includes two welding nozzles, and one welding nozzle corresponds to a corresponding set of distance measuring instruments.

[0009] As a further optimization of the ranging assembly for soft-pack battery welding of the present invention: a transmission tube is provided on the welding nozzle, and the transmission tube is divided into two parts, one part is used for transmitting protective gas, and the other part is used for exhaust gas recovery.

[0010] As a further optimization of the distance measuring component for welding soft-pack batteries of the present invention: the distance measuring instrument is a laser distance measuring instrument.

[0011] As a further optimization of the distance measuring component for soft-pack battery welding of the present invention: any one of the welding nozzles is arranged on the base frame through a positioning seat, and the position of the other welding nozzle is adjusted by a regulating component arranged on the base frame.

[0012] As a further optimization of the ranging component for soft-pack battery welding of the present invention: the regulating component includes a fixed seat connected to the corresponding welding nozzle, the fixed seat slidingly cooperates with the slide rail arranged on the base frame, the fixed seat is threadedly connected to the threaded rod rotatably arranged on the base frame, and the threaded rod is driven by a driving motor arranged on the base frame.

[0013] As a further optimization of the distance measuring assembly for soft-pack battery welding of the present invention: the threaded rod and the base frame are connected together through a bearing seat.

[0014] As a further optimization of the distance measuring assembly for soft-pack battery welding of the present invention: the two welding nozzles are covered with a protective shell arranged on the base frame.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention uses four tilted and staggered rangefinders to achieve cross-penetration of the laser path through the welding nozzle, thereby accurately measuring and positioning the welding points of the soft-pack battery tabs. The cross-penetration of the laser path can adapt to the narrow caliber of the welding nozzle and avoid its interference with the laser path. During the soft-pack battery tab welding process, this configuration ensures the accurate measurement of the welding point, so that the electronic control structure can be adjusted accordingly to ensure the accurate alignment of the welding point and the welding nozzle. This method guarantees the quality of the soft-pack battery processing process to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1Schematic front view structure of the present invention;

[0017] Figure 2 Schematic axonometric structure of the present invention;

[0018] Figure 3 Schematic enlarged structure at position A of the present invention;

[0019] Figure 4 Schematic detection route structure of the present invention;

[0020] Markings in the figure: 1, distance measurement component; 101, pushing cylinder; 102, connecting plate; 103, bearing plate; 104, rangefinder; 105, laser line; 106, arc-shaped groove; 2, base frame; 3, protective shell; 4, regulation component; 401, fixed seat; 402, moving connecting plate; 403, threaded sleeve; 404, bearing seat; 405, threaded rod; 406, drive motor; 407, slide rail; 5, welding auxiliary; 501, positioning seat; 502, welding nozzle; 503, transmission pipe. Detailed implementation manners

[0021] To better understand the present invention, the content of the present invention will be further clarified below in conjunction with embodiments. However, the content of the present invention is not limited to the following embodiments.

[0022] As Figure 1 shown, a distance measurement component for welding soft-pack batteries includes a distance measurement component 1 whose core is capable of precisely measuring the ear welding positions of the soft-pack batteries corresponding to two welding nozzles 502. The distance measurement component 1 is installed on the base frame 2, and by passing through the two welding nozzles 502 included in the welding auxiliary 5, the measurement of the ear welding position is realized. This design not only simplifies the operation process but also improves the accuracy and stability of the measurement. After the distance measurement component 1 completes the measurement, it can immediately adjust the position of the soft-pack battery through an electric control structure to ensure that the ear welding position corresponds precisely to the two welding nozzles 502. Subsequently, the electric control structure controls the laser welding head to coincide with the two welding nozzles 502 in sequence to perform laser welding on the welding positions of the soft-pack battery. This process not only has a high degree of automation but also has stable and reliable welding quality.

[0023] During the specific welding process, the welding nozzle 502 undertakes the task of ejecting the shielding gas. The welding nozzle 502 ejects the shielding gas from the welding nozzle 502 through a part of the transmission pipe 503 connected thereto to assist the laser in performing high-quality welding on the ears of the soft-pack battery. The use of the shielding gas can effectively prevent oxidation and pollution generated during the welding process and improve the welding quality. At the same time, another part of the transmission pipe 503 connected to the welding nozzle 502 can also generate negative pressure to suck the harmful gases generated during the laser welding of the ears of the soft-pack battery. This design not only protects the working environment but also ensures the health and safety of the operators.

[0024] As Figure 2 and Figure 3 shown, in order to adapt to the spacing between the tab welding positions of small-scale flexible packaging batteries, a regulation component 4 is provided. One of the two welding nozzles 502 is fixed on the base frame 2 through a positioning seat 501, while the other welding nozzle 502 is fixedly arranged on the fixed seat 401 included in the regulation component 4. The fixed seat 401 is in threaded connection with a threaded rod 405. Specifically, the threaded rod 405 is in threaded connection with a threaded sleeve 403 arranged on the fixed seat 401. The threaded rod 405 is arranged along the distribution direction of the flexible packaging battery welding positions, that is, the horizontal direction. The two ends of the optical axis of the threaded rod 405 are fixedly connected with the base frame 2 through bearing seats 404 to ensure the stability and reliability of the whole structure. The threaded rod 405 is driven by a driving motor 406 arranged on the base frame 2, which is convenient for the operator to adjust the position between the two welding nozzles 502 according to the spacing between the tab welding positions of the flexible packaging battery. The fixed seat 401 is in sliding fit with a slide rail 407 arranged on the base frame 2 to further maintain the moving stability of the fixed seat 401 and cooperate with the threaded rod 405 to accurately adjust the spacing between the two welding nozzles 502. The two welding nozzles 502 are covered by a protective shell 3 arranged on the base frame 2, and the welding nozzles 502 can penetrate through the protective shell 3 to cooperate with the laser welding head to perform welding operations at the tab welding positions of the flexible packaging battery. The protective shell 3 can protect the two welding nozzles 502 to reduce the probability that the protective shell 3 is displaced or damaged due to external factors.

[0025] The distance measuring component 1 includes a pushing cylinder 101 arranged on the base frame 2 and capable of displacing along the distribution direction of the flexible packaging battery welding positions. The pushing cylinder 101 can push a connecting plate 102, and then drive two bearing plates 103 fixedly connected with the connecting plate 102 to displace along the tab welding positions of the flexible packaging battery, that is, drive two distance measuring instruments 104 arranged on each of the two bearing plates 103 to displace, so as to perform precise positioning during the tab welding of the flexible packaging battery corresponding to the two welding nozzles 502. The two bearing plates 103 are arranged in sequence along the distribution direction of the flexible packaging battery welding positions, so that the two distance measuring instruments 104 arranged on each of the two bearing plates 103 can be staggeredly arranged corresponding to the two welding nozzles 502, thereby ensuring that the laser emission ports of all four distance measuring instruments 104 can be exposed for distance measurement work, improving the accuracy and comprehensiveness of measurement. In this embodiment, the distance measuring instrument 104 adopts an infrared laser distance measuring instrument 104. The infrared laser distance measuring instrument 104 has the advantages of high measurement accuracy, fast response speed, strong anti-interference ability, etc., and is suitable for measurement requirements in various complex environments. As Figure 4As shown, the two rangefinders 104 provided on the carrier plate 103 are tilted and distributed, so that the laser lines 105 of the four rangefinders 104 can cross and intersect the small-caliber welding ports of the two welding nozzles 502 to correspond to the four vertices of the soft-pack battery tab, that is, to assist in determining the welding position of the soft-pack battery tab. After the laser is reflected at the four vertices of the soft-pack battery tab, it crosses and passes through the welding port of the welding nozzle 502 again and is detected by the rangefinder 104. This process not only realizes the accurate measurement and verification of the tab position, but also improves the reliability and stability of the measurement.

[0026] After completing the precise distance measurement, the electronic control structure can be manipulated and fine-tuned to ensure that the pole ear, that is, the pole ear welding position, corresponds precisely to the welding nozzle 502. This step is crucial to improving welding quality and efficiency. In order to ensure the stability and adaptability of the rangefinder 104, the rangefinder 104 is designed to be square in shape, and two arc grooves 106 are provided at the center of the carrier plate 103. The two rangefinders 104 are connected to the arc groove 106 by bolts at the top corners facing the laser emission port, while the two rangefinders 104 are rotatably connected to the carrier plate 103 at the top corners away from the arc groove 106. This design allows the user to flexibly adjust the position and angle of the rangefinder 104 according to the specific parameters of the soft-pack battery and the welding nozzle 502 to adapt to the welding processing distance measurement and positioning process of soft-pack batteries of different models.

[0027] The use and structure of the laser welding head and the electric control structure in this specific embodiment should be understood as prior art.

[0028] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art may make various modifications or variations within the scope of the claims, which do not affect the essence of the present invention.

Claims

1. A ranging component for soft-pack battery welding, characterized in that: It comprises a distance measuring component (1) arranged on a base frame (2), and the distance measuring component (1) is used to pass through the small-caliber portion of the welding auxiliary component (5) to measure and locate the welding position of the soft-pack battery; The distance measuring assembly (1) comprises four distance measuring instruments (104) arranged in a staggered and inclined manner, so that the laser lines (105) of the four distance measuring instruments (104) cross and stagger through the small-caliber welding auxiliary component (5).

2. The ranging component for soft-pack battery welding according to claim 1, wherein: The four distance meters (104) are arranged in groups of two in sequence along the distribution direction of the soft-pack battery welding positions. The two groups of distance meters (104) are respectively arranged on two supporting plates (103). The two supporting plates (103) are both arranged on a connecting plate (102). The connecting plate (102) is driven by a pushing cylinder (101) arranged on the base frame (2) to be arranged along the distribution direction of the soft-pack battery welding positions.

3. The ranging component for soft-pack battery welding according to claim 2, characterized in that: The rangefinders (104) are arranged in a rectangular shape, and the ends of a group of rangefinders (104) opposite to each other and facing the laser generating port are connected to the arc groove (106), the arc groove (106) is provided on the supporting plate (103), and the ends of a group of rangefinders (104) facing away from the arc groove (106) are rotatably connected to the supporting plate (103).

4. The ranging component for soft-pack battery welding according to claim 2, wherein: The welding auxiliary component (5) comprises two welding nozzles (502), and one welding nozzle (502) corresponds to a corresponding set of distance measuring instruments (104).

5. The ranging component for soft-pack battery welding according to claim 4, characterized in that: The welding nozzle (502) is provided with a transmission pipe (503), and the transmission pipe (503) is divided into two parts, one part is used for transmitting protective gas, and the other part is used for waste gas recovery.

6. The ranging component for soft-pack battery welding according to claim 1, wherein: The rangefinder (104) is a laser rangefinder (104).

7. The ranging component for soft-pack battery welding according to claim 5, wherein: Any one of the welding nozzles (502) is arranged on the base frame (2) via a positioning seat (501), and the position of the other welding nozzle (502) is adjusted via an adjustment component (4) arranged on the base frame (2).

8. The ranging component for soft-pack battery welding according to claim 7, characterized in that: The regulating assembly (4) comprises a fixed seat (401) connected to a corresponding welding nozzle (502); the fixed seat (401) is slidably matched with a slide rail (407) provided on the base frame (2); the fixed seat (401) is threadedly connected to a threaded rod (405) rotatably provided on the base frame (2); the threaded rod (405) is driven by a driving motor (406) provided on the base frame (2).

9. The ranging component for soft-pack battery welding according to claim 8, wherein: The threaded rod (405) and the base frame (2) are connected together via a bearing seat (404).

10. The ranging component for soft-pack battery welding according to claim 8, wherein: The two welding nozzles (502) are covered with a protective shell (3) arranged on the base frame (2).

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