A bc battery laser-induced sintering apparatus

Abstract

The utility model relates to BC battery laser induction sintering device technical field, and disclose a kind of BC battery laser induction sintering device, including base, the transport shaft for transportation being set on base upside, the sliding table for carrying workpiece being set to the sliding transport shaft outside, the top table being rotatably connected on sliding table upside, the laser sintering device being set on top table upside, the battery plate being set on top table upside and the pad point being set on battery plate surface, top table upside is provided with stabilizing mechanism, top table upside is provided with clamping alignment mechanism, the stabilizing mechanism includes bearing table, the bearing table is fixedly connected on top table upper surface, bearing table is internally provided with through pressure groove, through pressure groove upside is provided with suction groove, the clamping alignment mechanism is used to position and clamping for photovoltaic panel, so that the practicability of device is improved, the stabilizing mechanism is used to adsorb and auxiliary sintering for photovoltaic panel, so that the positioning accuracy of device is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of laser-induced sintering devices for BC batteries, specifically a laser-induced sintering device for BC batteries. Background Technology

[0002] Laser-Induced Firing (LIF) for BC (Browser Contact) cells is a key process for forming ohmic contacts on the back side of a BC cell through the synergistic effect of laser and reverse bias. Key terms: ① LIF: The laser penetrates the silicon substrate from the front and focuses on the back grid lines, locally heating the silver paste to 800℃; ② Reverse bias: A probe applies a voltage of 10–15V to the P-region (negative electrode) and N-region (positive electrode), driving the directional migration of silver ions; ③ Ohmic contact: The Ag-Si eutectic layer reduces the contact resistance to <0.5mΩ·cm. Process logic: High-precision visual positioning (CCD camera ±10μm identification of pad points) → Vacuum adsorption ceramic platform fixes the cell (adsorption force F2 > probe pressure F1 to prevent displacement) → Probe lifts to contact the pad point and applies pressure → Simultaneous laser scanning of the molten grid lines → Electric field guides the formation of a low-resistance path.

[0003] Because the P / N regions on the back of the BC battery are interlaced in a forked pattern, the probe needs to precisely contact the preset Pad point or main grid position. In existing devices, misalignment between the probe and the via can easily cause the probe to contact adjacent polarity grids, resulting in a short circuit in the battery. Although the support platform uses a ceramic insulating plate, the sealing of the adsorption groove around the probe via is insufficient, which may cause the battery cell to shift due to vacuum leakage. Utility Model Content

[0004] The purpose of this invention is to provide a laser-induced sintering device for BC batteries to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a BC battery laser-induced sintering device, comprising a base, a transport shaft for transport on the upper side of the base, a sliding table for carrying workpieces slidably disposed outside the transport shaft, a top platform rotatably connected to the upper side of the sliding table, a laser sintering device disposed on the upper side of the top platform, a battery panel disposed on the upper side of the top platform, and pad points disposed on the surface of the battery panel. A stabilizing mechanism is disposed on the upper side of the top platform, and a clamping and aligning mechanism is disposed on the upper side of the top platform.

[0006] The stabilizing mechanism includes a support platform, which is fixedly connected to the upper surface of a top platform. A pressure channel is formed inside the support platform, and a suction groove is connected to the upper side of the pressure channel. The suction groove is connected to the upper surface of the support platform. A piezoelectric ceramic is fixedly connected inside the support platform, and a top plate is slidably connected inside the support platform. The piezoelectric ceramic is located on the lower side of the top plate. Multiple probes are fixedly connected to the upper surface of the top plate, and all probes are slidably connected to the interior of the top platform. The probes are spaced at the same intervals as the pad points. A pressure supply port is connected to one side of the pressure channel.

[0007] Preferably, the pressure groove is configured as a plurality of interconnected square-shaped grooves.

[0008] Preferably, the top platform has a square cavity inside.

[0009] Preferably, the clamping and aligning mechanism includes a support, which is fixedly connected to the upper side of the base. A limiting platform is fixedly connected to the upper end of the support. A slide is slidably connected inside the limiting platform. A stepper motor is fixedly connected inside the slide. A laser transceiver is arranged on the same side of the limiting platform and the top platform. The output end of the stepper motor is fixedly connected to a laser sintering device. Supports are fixedly connected at the included angles on both sides of the top platform. Support sleeves are fixedly connected to the upper surface of each support. A piston cylinder is fixedly connected to the side of each support sleeve that is far away from each other. A piston plate and a piston rod are slidably connected inside each piston cylinder. The piston plate and piston rod are fixedly connected. The piston rods are slidably connected inside adjacent support sleeves. Alignment plates are fixedly connected to the adjacent ends of each piston rod. The alignment plates are slidably connected to the upper surface of the top platform.

[0010] Preferably, the laser transceiver's receiving and transmitting ends are configured to be on the same axis.

[0011] Preferably, the aligning plate has an approximately L-shaped structure.

[0012] Preferably, the limiting platform has an electric push rod whose output end is fixedly connected to one side of the slide.

[0013] Compared with the prior art, this utility model provides a laser-induced sintering device for BC batteries, which has the following beneficial effects:

[0014] The clamping and aligning mechanism is used to position and clamp the photovoltaic panel. This mechanism uses laser to initially position the sliding stage to control the photovoltaic panel within a suitable range. Subsequently, the device uses multiple symmetrical L-shaped plates at oblique angles to position and stabilize the photovoltaic panel, preventing misalignment. This mechanism, together with the stabilizing mechanism, provides uniform pressure and clamping, enabling the device to avoid the photovoltaic panel from deflecting or misaligning, thus ensuring accurate sintering and improving the device's practicality.

[0015] The stabilizing mechanism is used to adsorb and assist in the sintering of photovoltaic panels. By setting a negative pressure channel with staggered probe holes inside the support platform, the photovoltaic panels can be subjected to uniform adsorption force, thereby reducing the problem of easy positional displacement of photovoltaic panels and improving the positioning accuracy of the device. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments 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.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0019] Figure 3 This is a schematic diagram of a half-section of the present invention;

[0020] Figure 4 This is a schematic diagram of the structure of the support platform in this utility model;

[0021] Figure 5 This is a schematic diagram of the support sleeve in this utility model.

[0022] In the diagram: 1. Base; 2. Transport shaft; 3. Sliding table; 4. Top platform; 5. Laser sintering device; 6. Stabilizing mechanism; 601. Bearing platform; 602. Pressure channel; 603. Suction channel; 604. Piezoelectric ceramic; 605. Top plate; 606. Probe; 607. Pressure supply port; 7. Clamping and aligning mechanism; 701. Support; 702. Limiting platform; 703. Sliding table; 704. Stepper motor; 705. Laser transceiver; 706. Support; 707. Support sleeve; 708. Piston cylinder; 709. Piston plate; 710. Piston rod; 711. Alignment plate; 8. Battery panel; 9. Pad point. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Example

[0025] Please see Figure 1-5 This utility model provides a technical solution: a BC battery laser-induced sintering device, including a base 1, a transport shaft 2 for transport on the upper side of the base 1, a sliding table 3 for carrying the workpiece slidably arranged outside the transport shaft 2, a top platform 4 rotatably connected to the upper side of the sliding table 3, a laser sintering device 5 arranged on the upper side of the top platform 4, a battery plate 8 arranged on the upper side of the top platform 4 and pad points 9 arranged on the surface of the battery plate 8, a stabilizing mechanism 6 arranged on the upper side of the top platform 4, and a clamping and aligning mechanism 7 arranged on the upper side of the top platform 4;

[0026] This mechanism is used to adsorb the solar panel 8, which improves the stability of limiting the solar panel 8. The stabilizing mechanism 6 includes a support platform 601, which is fixedly connected to the upper surface of the top platform 4. A pressure channel 602 is opened inside the support platform 601. A suction channel 603 is connected to the upper side of the pressure channel 602. The suction channel 603 is connected to the upper side of the support platform 601. A piezoelectric ceramic 604 is fixedly connected inside the support platform 601. A top plate 605 is slidably connected inside the support platform 601. The piezoelectric ceramic 604 is located on the lower side of the top plate 605. Multiple probes 606 are fixedly connected to the upper side of the top plate 605. All probes 606 are slidably connected to the inside of the top platform 4. The probes 606 are all set at the same interval with the pad point 9. A pressure supply port 607 is connected to one side of the pressure channel 602.

[0027] Furthermore, the pressure channel 602 is configured as multiple interconnected square-shaped sections.

[0028] Furthermore, a square cavity is provided inside the top platform 4. Example

[0029] This mechanism is used for positioning and sintering of the solar panel 8. It improves positioning accuracy. Please refer to [link / reference]. Figure 1-5Furthermore, in conjunction with Embodiment 1, the clamping and aligning mechanism 7 includes a support 701, which is fixedly connected to the upper side of the base 1. A limiting platform 702 is fixedly connected to the upper end of the support 701. A slide table 703 is slidably connected inside the limiting platform 702. A stepper motor 704 is fixedly connected inside the slide table 703. A laser transceiver 705 is arranged on the same side of the limiting platform 702 and the top platform 4. The output end of the stepper motor 704 is fixedly connected to the laser sintering device 5. Both sides of the top platform 4 are fixedly connected to... A support platform 706 is provided, and a support sleeve 707 is fixedly connected to the upper surface of the support platform 706. A piston cylinder 708 is fixedly connected to the side of the support sleeve 707 that is far away from each other. A piston plate 709 and a piston rod 710 are slidably connected inside the piston cylinder 708. The piston plate 709 and the piston rod 710 are fixedly connected. The piston rod 710 is slidably connected inside the adjacent support sleeve 707. A leveling plate 711 is fixedly connected to the end of the piston rod 710 that is close to each other. The leveling plate 711 is slidably connected to the upper surface of the top platform 4.

[0030] Furthermore, the laser transceiver 705's receiving and transmitting ends are configured to be on the same axis.

[0031] Furthermore, the aligning plate 711 is set with a structure that approximates an L-shape.

[0032] Furthermore, the limiting stage 702 is internally fixedly connected to an electric push rod whose output end is fixedly connected to one side of the slide table 703.

[0033] In actual operation, when this device is in use, the user starts the conveyor shaft 2 to move the sliding table 3 horizontally. When the laser transceiver 705 docks, the sliding table 3 stops moving. At this time, the user can supply a pressure source into the piston cylinder 708. The pressure pushes the piston plate 709 to bring the piston rods 710 closer together, thereby causing the aligning plate 711 to be driven to push the battery panel 8 to adjust its position and to be more stably limited by the L-shaped structure. Since the battery panel 8 is usually regularly shaped, after the battery panel 8 is adjusted to the correct position, the user can provide negative pressure to the pressure supply port 607 so that the negative pressure is drawn from the suction groove 603 to the battery panel 8, thereby uniformly adsorbing and limiting the battery panel 8. The top platform 4 and the laser sintering device 5 are adjusted at different angles. At the same time, the sliding table 703 can be adjusted by the electric push rod so that the grid lines on the battery panel 8 are aligned with the laser beam of the laser sintering device 5. Then, the user can use the laser beam of the laser sintering device 5 to dissolve the silver on the battery panel 8, and at the same time, the piezoelectric ceramic 604 lifts the probe 606 to diffuse the dissolved silver liquid to the appropriate position.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A BC battery laser-induced sintering device, comprising a base (1), a transport shaft (2) disposed on the upper side of the base (1) for transport, a sliding table (3) slidably disposed outside the transport shaft (2) for carrying workpieces, a top platform (4) rotatably connected to the upper side of the sliding table (3), a laser sintering device (5) disposed on the upper side of the top platform (4), a battery plate (8) disposed on the upper side of the top platform (4), and pad points (9) disposed on the surface of the battery plate (8), characterized in that: A stabilizing mechanism (6) is provided on the upper side of the top platform (4), and a clamping and straightening mechanism (7) is provided on the upper side of the top platform (4). The stabilizing mechanism (6) includes a support platform (601), which is fixedly connected to the upper surface of the top platform (4). A pressure channel (602) is provided inside the support platform (601). A suction groove (603) is connected to the upper side of the pressure channel (602). The suction groove (603) is connected to the upper side of the support platform (601). A piezoelectric ceramic (604) is fixedly connected inside the support platform (601). A top plate (605) is slidably connected inside the support platform (601). The piezoelectric ceramic (604) is located on the lower side of the top plate (605). A plurality of probes (606) are fixedly connected to the upper side of the top plate (605). All probes (606) are slidably connected to the inside of the top platform (4). All probes (606) are spaced at the same interval as the pad point (9). A pressure supply port (607) is connected to one side of the pressure channel (602).

2. The laser-induced sintering apparatus for BC batteries according to claim 1, characterized in that: The pressure channel (602) is configured as multiple interconnected square-shaped channels.

3. The laser-induced sintering apparatus for BC batteries according to claim 1, characterized in that: The top platform (4) has a square cavity inside.

4. The laser-induced sintering apparatus for BC batteries according to claim 1, characterized in that: The clamping and aligning mechanism (7) includes a support (701), which is fixedly connected to the upper side of the base (1). A limiting platform (702) is fixedly connected to the upper end of the support (701). A slide (703) is slidably connected inside the limiting platform (702). A stepper motor (704) is fixedly connected inside the slide (703). A laser transceiver (705) is provided on the same side of the limiting platform (702) and the top platform (4). The output end of the stepper motor (704) is fixedly connected to the laser sintering device (5). Supports (705) are fixedly connected at the included angles on both sides of the top platform (4). 6) Each of the upper surfaces of the support (706) is fixedly connected to a support sleeve (707). Each of the support sleeves (707) is fixedly connected to a piston cylinder (708) on the side away from each other. Each of the piston cylinders (708) is slidably connected to a piston plate (709) and a piston rod (710). The piston plate (709) and the piston rod (710) are fixedly connected. Each of the piston rods (710) is slidably connected to the inside of the adjacent support sleeves (707). Each of the adjacent ends of the piston rods (710) is fixedly connected to a leveling plate (711). Each of the leveling plates (711) is slidably connected to the upper surface of the top platform (4).

5. The laser-induced sintering apparatus for BC batteries according to claim 4, characterized in that: The laser transceiver (705) has its receiving and transmitting ends set to the same axis.

6. The laser-induced sintering apparatus for BC batteries according to claim 4, characterized in that: The aligning plate (711) has an approximately L-shaped structure.

7. The BC battery laser-induced sintering apparatus according to claim 4, characterized in that: The limiting platform (702) is internally connected to an electric push rod whose output end is fixedly connected to one side of the slide (703).

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