Battery string welding device and BC battery string preparation equipment

Abstract

The utility model discloses a battery string welding device and BC battery string preparation equipment, the battery string welding device comprises a base, an infrared LED welding head and a pressing assembly, the infrared LED welding head is arranged on the base, the pressing assembly is arranged on the infrared LED welding head, the base, the infrared LED welding head and the pressing assembly are sequentially arranged in the gravity direction, and the pressing assembly is arranged on the base. The pressing assembly is provided with a light hole. According to the scheme, the problems that in the related technology, due to the fact that the heat source distribution range of an infrared lamp tube welding head is wide, air heat loss exists in the heat radiation energy transfer process in the non-contact welding process, temperature fluctuation of a welding area is prone to occurring, and welding quality is poor can be solved. Therefore, the problem that performance degradation or pseudo soldering is easy to occur due to local overheating or uneven heating of the battery string is solved.

Description

Technical Field

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

[0002] In the BC battery string welding process, stacked welding ribbon groups and diaphragm groups are laid on the support station of the support platform. Then, multiple battery cells in the battery cell group are placed one by one on the multiple diaphragms of the diaphragm group. The support platform is equipped with multiple pressure pins and the welding ribbon group is pressed against the back of the battery cell group. The infrared lamp welding head irradiates the support station to complete the welding of the entire battery string.

[0003] However, due to the wide distribution of heat source of infrared lamp welding head, there is air heat loss during the non-contact welding process, which can easily cause temperature fluctuations in the welding area. This can lead to local overheating or uneven heating of the battery string, resulting in performance degradation or poor welding. Utility Model Content

[0004] The purpose of this invention is to provide a battery string welding device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: On one hand, a battery string welding device is provided, comprising: a base, an infrared LED welding head, and a pressing component. The infrared LED welding head is disposed on the base, and the pressing component is disposed on the infrared LED welding head. Along the direction of gravity, the base, the infrared LED welding head, and the pressing component are arranged sequentially, and the pressing component has a light-transmitting hole.

[0006] Preferably, the pressing assembly includes a mounting plate and a pressing pin assembly, wherein the mounting plate has multiple light-transmitting holes and the pressing pin assembly is disposed on the mounting plate.

[0007] Preferably, the pressure needle assembly includes multiple pressure needles, the multiple light-transmitting holes are arranged in a grid pattern, and the multiple pressure needles are disposed one-to-one between the multiple light-transmitting holes.

[0008] Preferably, the mounting plate has a ventilation pipe and multiple air holes, the multiple light-transmitting holes are arranged in a grid pattern, the ventilation pipe and the multiple air holes are connected, and the multiple air holes are arranged one-to-one between the multiple light-transmitting holes.

[0009] Preferably, the angle between the blowing direction of the air blowing hole and the pressing direction of the pressing component is in the range of 0° to 90°.

[0010] Preferably, the pressure needle assembly includes multiple pressure needles and multiple elastic deformation elements. The mounting plate has multiple through holes. The multiple pressure needles and the multiple through holes are slidably fitted one-to-one, and one end of each pressure needle passes through each through hole. Each elastic deformation element is elastically contacted between one end of each slidingly fitted pressure needle and the inner wall of the through hole.

[0011] Preferably, it further includes an adsorption element, which is elastically floating on the pressing assembly, or the adsorption element is elastically floating on the infrared LED welding head, and the adsorption end of the adsorption element passes through one of the plurality of light-transmitting holes.

[0012] Preferably, along the direction of gravity, the adsorption end of the adsorption element is longer than the pressing end of the pressing assembly.

[0013] Preferably, the infrared LED welding head includes multiple infrared LED sub-welding heads, the pressing component includes multiple pressing elements, the multiple pressing elements are respectively disposed on the multiple infrared LED sub-welding heads, and the multiple infrared LED sub-welding heads are arranged in an array along the first direction on the base with adjustable spacing.

[0014] On the other hand, a BC battery string preparation device is also provided, including a support platform, a lifting drive, a translation drive, and the aforementioned battery string welding device. The lifting drive is located at the driving end of the translation drive. The sheet-laying mechanism is used to carry multiple battery cells arranged in an array at a preset spacing. The transporter is used to transport the multiple battery cells carried by the sheet-laying mechanism to the support platform. The ribbon-making mechanism is used to provide a ribbon assembly to the support platform. The support platform is used to carry the battery string to be welded formed by placing the ribbon assembly on the multiple battery cells.

[0015] The technical solution adopted in this application can achieve the following beneficial effects:

[0016] In a battery string welding device disclosed in this application, an infrared LED welding head is disposed on a base, and a pressing component is disposed on the infrared LED welding head. The base, the infrared LED welding head and the pressing component are arranged in sequence along the direction of gravity, and the pressing component has a light-transmitting hole.

[0017] During the use of the battery string welding device, the pressing component presses down on multiple battery cells in the battery string to be welded, fixing them in place. It can emit infrared light of a specific wavelength that only multiple battery cells can absorb, and the light passes through the light-transmitting hole to irradiate multiple battery cells in the battery string to be welded. Since the infrared LED welding head uses focused heating, more precise local temperature control can be achieved.

[0018] In the above-described structure, during the entire string welding process of the battery string, the infrared LED welding head and the light-transmitting holes in the pressing component, compared to the infrared lamp tubes in related technologies, emit infrared light of a specific wavelength that can be absorbed by only a few battery cells. The battery cells themselves are heated to achieve welding connection with the welding strip. Furthermore, the infrared LED welding head uses focused heating to achieve more precise local temperature control, so that the battery string to be welded can be heated evenly, thereby avoiding local overheating or uneven heating of the battery string, which can easily lead to performance degradation or poor soldering. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Figure 1 This is a bottom view of the battery string welding apparatus disclosed in the embodiments of this application;

[0021] Figure 2 This is a front view of the battery string welding apparatus disclosed in the embodiments of this application;

[0022] Figure 3 This is a schematic diagram of the battery string welding device disclosed in the embodiments of this application;

[0023] Figure 4 This is a schematic diagram of the structure of the infrared LED sub-welding head and the pressing component disclosed in the embodiments of this application.

[0024] Figure 5 This is a front view of the infrared LED sub-welding head and the pressing component mating as disclosed in the embodiments of this application;

[0025] Figure 6 for Figure 5 A partial sectional view;

[0026] Figure 7 This is a bottom view of the infrared LED sub-welding head and pressing component in cooperation as disclosed in the embodiments of this application;

[0027] Figure 8 This is a simplified structural diagram of the BC battery string fabrication apparatus disclosed in the embodiments of this application.

[0028] In the diagram: 100, base; 200, infrared LED welding head; 210, infrared LED sub-welding head; 300, pressing assembly; 310, mounting plate; 320, pressure pin; 330, elastic deformation component; 400, adsorption component; 500, cloth sheet mechanism; 600, handling arm; 700, belt making mechanism; 800, support platform; 910, lifting drive component; 920, translation drive component; A, light-transmitting hole; B, air blowing hole; C, through hole. Detailed Implementation

[0029] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0030] It should be noted that when a component is said to be "set on" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0032] like Figures 1 to 7 As shown, this application discloses a battery string welding device, which includes a base 100, an infrared LED welding head, and a pressing assembly 300.

[0033] Specifically, the infrared LED welding head is disposed on the base 100, and the pressing component 300 is disposed on the infrared LED welding head. The base 100, the infrared LED welding head and the pressing component 300 are arranged in sequence along the direction of gravity. The pressing component 300 has a light-transmitting hole A.

[0034] During the use of the battery string welding device, the pressing component 300 presses down on multiple battery cells in the battery string to be welded (the battery string to be welded is formed by multiple battery cells arranged in an array at a preset spacing and covered with welding ribbons) to fix them in place. It can emit infrared light of a specific wavelength that only multiple battery cells can absorb, and irradiate multiple battery cells in the battery string to be welded through the light-transmitting hole A. Since the infrared LED welding head adopts focused heating, more precise local temperature control is achieved.

[0035] In the above structure, during the entire string welding process of the battery string, the infrared LED welding head and the light-transmitting hole A opened in the pressing component 300, compared with the infrared lamp tube in related technologies, the infrared LED welding head can emit infrared light of a specific wavelength that can be absorbed by only a few battery cells. The battery cells themselves are heated to achieve welding connection with the welding strip. Furthermore, the infrared LED welding head adopts focused heating, thereby achieving more precise local temperature control, so that the battery string to be welded can be heated evenly, thereby avoiding the situation where the battery string is easily overheated or unevenly heated, which can easily lead to performance degradation or poor soldering.

[0036] In addition, the infrared LED welding head may include a connector and multiple infrared LED beads, with the multiple LED beads evenly arranged on the connector. This is prior art, and this application will not elaborate on it further.

[0037] In this embodiment of the application, the pressing component 300 may include a mounting plate 310 and a set of pressing pins 320. Specifically, the mounting plate 310 has a plurality of light-transmitting holes A, and the set of pressing pins 320 is disposed on the mounting plate 310. The set of pressing pins 320 can press the plurality of battery cells of the battery string to be welded.

[0038] In a further technical solution, the pressure pin 320 group may include multiple pressure pins 320. Specifically, multiple light-transmitting holes A are arranged in a grid pattern, and multiple pressure pins 320 are arranged one-to-one between multiple light-transmitting holes A. In the above structure, while ensuring that multiple light-transmitting holes A provide sufficient illumination area for the infrared LED welding head, the multiple pressure pins 320 can also press the battery string to be welded to fix it.

[0039] In one alternative design, the mounting plate 310 may have ventilation channels and multiple air vents B. Specifically, multiple light-transmitting holes A are arranged in a grid pattern, the ventilation channels and the multiple air vents B are connected, and the multiple air vents B are positioned one-to-one between the multiple light-transmitting holes A. In the above structure, the mounting plate 310 not only provides a mounting base for the pressure pins 320, but also has its own ventilation channels and multiple air vents B, which facilitates rapid cooling after the batteries to be soldered are connected in series.

[0040] In a further technical solution, the angle between the blowing direction of the air blowing hole B and the pressing direction of the pressing component 300 can be 0° to 90°. For example, the angle can be 0°, 5°, 10°, 15°, 20°, 30°, 60° and 75°, etc. This application does not impose any restrictions on this. It is worth noting that the cooling gas output from the air blowing hole B with an angle of 0° to 90° can be sprayed onto multiple battery cells of the battery string after welding, thereby achieving rapid cooling.

[0041] In another alternative, the outer edge of the mounting plate 310 may be provided with at least one nozzle. Specifically, at least one nozzle is connected to a gas source control unit via a gas pipe. The gas source control unit can control the delivery of cooling gas to the nozzle for post-welding cooling of the battery string to be welded.

[0042] In this embodiment of the application, the pressure needle 320 group may include a plurality of pressure needles 320 and a plurality of elastic deformation elements 330. Specifically, the mounting plate 310 has a plurality of through holes C, the plurality of pressure needles 320 are slidably fitted to the plurality of through holes C in a one-to-one correspondence, and one end of each pressure needle 320 passes through each through hole C. Each elastic deformation element 330 elastically contacts one end of each pressure needle 320 that is slidably fitted to each other and the inner wall of the through hole C.

[0043] In the above structure, multiple pressure pins 320 are elastically floatingly connected to the mounting plate 310. During the welding process, the multiple pressure pins 320 will not exert rigid pressure on the battery string to be welded, thereby avoiding damage to the battery cells. At the same time, it can also shorten the distance between the battery string to be welded and the infrared LED welding head, improving welding efficiency.

[0044] In addition, the elastic deformation element 330 can be a spring, a sponge sleeve, a rubber pad, etc., and this application does not impose any restrictions on it.

[0045] In this embodiment, the battery string welding device may further include an adsorption member 400. Specifically, the adsorption member 400 is elastically floating on the pressing component 300, or the adsorption member 400 is elastically floating on the infrared LED welding head. The adsorption end of the adsorption member 400 passes through one of the multiple light-transmitting holes A. The adsorption member 400 is used to fix the battery string to be welded and to pick up the welded battery string.

[0046] In a further technical solution, along the direction of gravity, the adsorption end of the adsorption member 400 can exceed the pressing end of the pressing component 300.

[0047] During the use of the battery string welding device, the adsorption end of the adsorption component 400 can first float and press against the battery string to be welded, and then the pressing component 300 presses against the battery string to be welded. The infrared LED welding head can heat the battery string to be welded, thereby completing the welding process. When the battery string welding device lifts and transports the welded battery string, the pressing component 300 moves away from the battery string, but the adsorption component 400 is still in contact with the battery string and adsorbs the battery string again, thus facilitating the post-weld transport of the battery string.

[0048] In this embodiment of the application, the infrared LED welding head may include multiple infrared LED sub-welding heads. Specifically, the pressing component 300 includes multiple pressing members, which are respectively disposed on the multiple infrared LED sub-welding heads. The multiple infrared LED sub-welding heads are arranged in an array on the base 100 along the first direction and the spacing is adjustable.

[0049] During the welding process, multiple infrared LED sub-welding heads and their corresponding pressing components can correspond one-to-one with multiple battery cells of the battery string to be welded, thereby realizing pressing and heating welding. Since multiple infrared LED sub-welding heads are arrayed on the base 100 along the first direction and the spacing is adjustable, the battery string welding equipment can be compatible with welding battery strings with different cell spacings.

[0050] like Figure 8 As shown, this application also discloses a BC battery string preparation device. The disclosed BC battery string preparation device includes a sheet-laying mechanism 500, a transporter 600, a ribbon-making mechanism 700, a support platform 800, a lifting drive 910, a translation drive 920, and the aforementioned battery string welding device. Specifically, the lifting drive 910 is located at the driving end of the translation drive 920, and the base 100 is located on the driving end of the lifting drive 910. The sheet-laying mechanism 500 is used to carry multiple battery cells arranged in an array at a preset spacing. The transporter 600 is used to transport the multiple battery cells carried by the sheet-laying mechanism 500 to the support platform 800. The ribbon-making mechanism 700 is used to provide a ribbon assembly to the support platform 800. The support platform 800 is used to carry the battery string to be welded formed by placing the ribbon assembly on multiple battery cells.

[0051] The sheet-laying mechanism 500 may include a robotic arm and a sheet-laying table. The robotic arm picks up the battery cells one by one and arranges them on the sheet-laying table. Alternatively, the sheet-laying mechanism 500 may include a conveyor channel and a sheet-laying table. The conveyor channel can transport multiple battery cells arranged in a preset spacing array to the sheet-laying table. This application does not impose any limitations on this. The tape-making mechanism 700 may include a tape feeder, a tape-making table, and a tape transporter. Specifically, the tape feeder outputs the welding tape roll to the tape-making table. The tape-making table cuts the welding tape to form a welding tape group. The tape transporter carries the welding tape group and places it on multiple battery cells on the support platform 800.

[0052] During the use of the BC battery string preparation equipment, the sheet-laying mechanism 500 carries multiple battery cells arranged in a preset spacing array. The transporter 600 transports the multiple battery cells carried by the sheet-laying mechanism 500 to the support platform 800. The ribbon-making mechanism 700 provides the welding ribbon group to the support platform 800. The support platform 800 carries the battery string to be welded formed by placing the welding ribbon group on multiple battery cells. The lifting drive 910 indirectly drives the battery string welding device to weld the battery string to be welded. Then, the translation drive 920 drives the battery string welding device to transport the welded battery string to the buffer station or finished product area.

[0053] In the above structure, the lifting drive 910 and the translation drive 920 provide two different degrees of freedom to the battery string welding device, so that the battery string welding device can realize the two processes of welding and handling through the lifting drive 910 and the translation drive 920. At the same time, it also reduces the need to set up a separate handling arm 600 for the welded battery string, thereby saving costs and realizing the optimized integrated design of the structure.

[0054] In addition, the lifting drive component 910 can be an electric cylinder, a pneumatic cylinder, a motor and a rack and pinion combination, etc., and this application does not impose any restrictions on it; the translation drive component 920 can be an electric cylinder, a pneumatic cylinder, a motor and a rack and pinion combination, etc., and this application does not impose any restrictions on it.

[0055] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A battery string welding device, characterized in that, include: The base (100), infrared LED welding head and pressing assembly (300) are arranged in sequence along the direction of gravity. The pressing assembly (300) is provided with a light-transmitting hole (A).

2. The battery string welding device according to claim 1, characterized in that, The pressing assembly (300) includes a mounting plate (310) and a group of pressing pins (320). The mounting plate (310) has a plurality of light-transmitting holes (A), and the group of pressing pins (320) is disposed on the mounting plate (310).

3. The battery string welding device according to claim 2, characterized in that, The pressure needle (320) group includes multiple pressure needles (320), and the multiple light-transmitting holes (A) are arranged in a grid pattern. The multiple pressure needles (320) are arranged one-to-one between the multiple light-transmitting holes (A).

4. The battery string welding device according to claim 2, characterized in that, The mounting plate (310) has a ventilation pipe and multiple air holes (B). The multiple light-transmitting holes (A) are arranged in a grid pattern. The ventilation pipe and the multiple air holes (B) are connected. The multiple air holes (B) are arranged one-to-one between the multiple light-transmitting holes (A).

5. The battery string welding apparatus according to claim 4, characterized in that, The angle between the blowing direction of the air hole (B) and the pressing direction of the pressing component (300) is in the range of 0° to 90°.

6. The battery string welding apparatus according to claim 2, characterized in that, The pressure needle (320) group includes multiple pressure needles (320) and multiple elastic deformation elements (330). The mounting plate (310) has multiple through holes (C). The multiple pressure needles (320) and the multiple through holes (C) are slidably engaged in a one-to-one correspondence. One end of each pressure needle (320) passes through each through hole (C). Each elastic deformation element (330) is elastically disposed between one end of each pressure needle (320) that is slidably engaged with each other and the inner wall of the through hole (C).

7. The battery string welding apparatus according to claim 1, characterized in that, It also includes an adsorption element (400), which is elastically floating on the pressing assembly (300), or the adsorption element (400) is elastically floating on the infrared LED welding head, and the adsorption end of the adsorption element (400) passes through one of the plurality of light-transmitting holes (A).

8. The battery string welding apparatus according to claim 7, characterized in that, Along the direction of gravity, the adsorption end of the adsorption member (400) extends beyond the pressing end of the pressing assembly (300).

9. The battery string welding apparatus according to claim 1, characterized in that, The infrared LED welding head includes multiple infrared LED sub-welding heads, and the pressing component (300) includes multiple pressing elements. The multiple pressing elements are respectively disposed on the multiple infrared LED sub-welding heads. The multiple infrared LED sub-welding heads are arranged in an array along the first direction on the base (100) and the spacing is adjustable.

10. A BC battery string fabrication apparatus, characterized in that, The device includes a sheet-laying mechanism (500), a transporter (600), a ribbon-making mechanism (700), a support platform (800), a lifting drive (910), a translation drive (920), and a battery string welding apparatus as described in any one of claims 1 to 9. The lifting drive (910) is located at the driving end of the translation drive (920), and the base (100) is located on the driving end of the lifting drive (910). The sheet-laying mechanism (500) is used to carry multiple battery cells arranged in an array at a preset spacing. The transporter (600) is used to transport the multiple battery cells carried by the sheet-laying mechanism (500) to the support platform (800). The ribbon-making mechanism (700) is used to provide a ribbon group to the support platform (800). The support platform (800) is used to carry a battery string to be welded formed by placing the ribbon group on the multiple battery cells.

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