CN-224234086-U - Back-contact battery's anti-warpage mechanism

Abstract

The utility model provides an anti-warping mechanism which comprises a bracket, an anti-warping device and a cooling device. The anti-warping device and the cooling device are arranged on the support, the anti-warping device comprises a motor and a molding piece, the motor drives the molding piece to carry out anti-warping molding on the back contact battery, and the cooling device is connected with the molding piece to cool the back contact battery contacted by the molding piece. Through the cooperation of motor drive shaping spare and cooling device, realized the effective anti-warpage processing to back contact battery, solved the technical problem of battery warpage. Compared with the prior art, the technical scheme of the utility model has higher shaping precision and cooling effect, can effectively prevent the battery from being warped after shaping, and improves the production efficiency and the quality of the battery.

Inventors

• LIU SONGTAO
• ZHOU YUANBIN
• JIANG XIAOSHAN

Assignees

• 天合光能股份有限公司

Dates

Publication Date

20260512

Application Date

20250513

Claims (10)

1. 1. The back-contact battery anti-warping mechanism is characterized by comprising a support, an anti-warping device and a cooling device, wherein the anti-warping device and the cooling device are arranged on the support, the anti-warping device comprises a motor and a molding piece, the motor is used for driving the molding piece to extrude the back-contact battery to carry out anti-warping molding, and the cooling device is connected with the molding piece to cool the back-contact battery contacted by the molding piece.
2. 2. The back-contact battery of claim 1, wherein the cooling device comprises a cooling channel, the molding member comprises a heat conducting member, a cooling passage is provided on the molding member, and the cooling channel passes through the cooling passage.
3. 3. The back-contact battery of claim 1, wherein the back-contact battery further comprises an adsorption structure for adsorbing the back-contact battery to the back-contact battery, the adsorption structure being mounted on one end face of the bracket and the adsorption structure being provided on opposite sides of the molding member.
4. 4. The back-contact battery of claim 3, wherein the back-contact battery further comprises a transmission assembly mounted on an end of the support remote from the suction structure, the motor driving the transmission assembly, the transmission assembly connecting a plurality of the shaped pieces.
5. 5. The back-contact battery of claim 4, wherein the back-contact battery further comprises: The mounting seat is mounted on the transmission assembly and moves along with the transmission assembly; The fixing blocks are uniformly distributed along the extending direction of the mounting seat, sliding grooves are formed in the fixing blocks, and the straight line where the sliding grooves are located is intersected with the straight line where the extending direction of the mounting seat is located; The first sliding block is arranged in the sliding groove and moves back and forth along the sliding groove; The first connecting rod, the one end of first connecting rod is connected first slider, be equipped with a plurality of via holes on the support, the other end of first connecting rod passes the via hole is connected the shaping spare.
6. 6. The back-contact battery of claim 5, wherein the back-contact battery further comprises a first connector and a second connector, the first connector is mounted on an end surface of the mounting base away from the transmission assembly, the second connector is mounted on an end surface of the first connector, the first connector extends in a first direction until the motor output end abuts against the second connector, and the motor output end is connected with the second connector.
7. 7. The back-contact battery anti-warping mechanism according to claim 1, wherein the motor control precision a is equal to or less than 0.05mm, and the motor anti-warping distance l is equal to or less than 0mm and equal to or less than 20mm.
8. 8. The back-contact battery anti-warping mechanism according to claim 1, wherein the molding member is provided in a polygonal block structure, the molding width b satisfies 0mm < b < 700mm, and the molding angle α satisfies 90 ° - α < 180 °.
9. 9. The back-contact battery anti-warping mechanism according to claim 1, wherein the molding member is provided in a round molding block structure, and the diameter d of the round shape satisfies 0mm < d < 900mm.
10. 10. The back-contact battery of claim 1, wherein the molding member is provided in an oval block-like structure.

Description

Back-contact battery's anti-warpage mechanism Technical Field The utility model relates to the technical field of solar cell manufacturing, in particular to an anti-warping mechanism of a back contact cell. Background The PN junction and the metal contact are moved to the back of the battery by the back contact battery (BC battery) technology, so that the front is shielded without electrodes, the area of the battery for absorbing sunlight irradiation is increased, the conversion efficiency is improved, and more electric quantity can be generated. In addition, the front of the battery is free of any circuit or electrode, the appearance is concise and attractive, and the high-end market in the western world can obtain higher overflow capacity due to the characteristics of high efficiency, attractive appearance, safety, reliability and the like. However, BC cells can suffer from warpage problems after being soldered by a string soldering machine, which is one of the most dominant and troublesome problems of BC cells. The warpage of the battery sheet can cause various adverse conditions such as parallel sheet, parallel string, string length, hidden crack, broken sheet, and abnormal problems such as insufficient lap joint of the welding strip and the bus bar (exceeding the bus bar), which obviously increase the production cost. In the prior art, the common battery piece anti-warping tool has the following defects: The anti-warping tool for the battery piece generates a reaction force by pushing the battery piece, and mainly adopts a mode of cylinder control, a spring or a combination of the spring and the cylinder, but the methods lack accuracy in force and distance control. The cooling effect of the battery piece anti-warping tool is poor, so that the battery piece is placed on a serial flow line under the condition of incomplete cooling, and the battery piece is restored to the previous warping state. In the process of the anti-warping and molding of the battery piece, plastic treatment cannot be performed according to the expected amplitude, and the anti-warping effect is affected. These problems seriously affect the productivity and quality of the BC battery, increase the production cost, and limit the wide application of BC battery technology. Therefore, developing a buckling restrained mechanism capable of precisely controlling the buckling restrained force and distance, providing effective cooling, and performing plastic working in a desired range is a technical problem to be solved at present. In view of the above, there is a need in the art for improvements. Disclosure of utility model The utility model aims to provide a back-contact battery anti-warping mechanism which has the advantages of precisely controlling the anti-warping force and distance, providing effective cooling and being capable of carrying out plastic treatment according to the expected amplitude. In order to achieve the above purpose, the utility model adopts the following technical scheme: The warping prevention mechanism of the back contact battery comprises a support, a warping prevention device and a cooling device, wherein the warping prevention device and the cooling device are arranged on the support, the warping prevention device comprises a motor and a molding piece, the motor drives the molding piece to perform warping prevention molding on the back contact battery, and the cooling device is connected with the molding piece to cool the back contact battery contacted by the molding piece. According to the anti-warping mechanism, the motion of the molded part is accurately controlled through the motor, so that the accurate control of the anti-warping force and the distance is realized, the cooling device is arranged to provide an effective cooling effect, and the molded part is designed to enable plastic treatment according to the expected amplitude, so that the problems in the prior art are solved, and the anti-warping mechanism has the advantages of accurately controlling the anti-warping force and the distance, providing effective cooling and enabling plastic treatment according to the expected amplitude. In addition, the back-contact battery anti-warping mechanism according to the above embodiment of the application may have the following additional technical features: in some embodiments of the present utility model, the cooling device includes a cooling pipe, the molding member is a heat conducting member, a cooling passage is provided on the molding member, and the cooling pipe passes through the cooling passage In some embodiments of the present utility model, the anti-warping device further includes an adsorption structure mounted on one end surface of the support, and the adsorption structure is disposed on two opposite sides of the molding member. In some embodiments of the present utility model, the anti-warping device further includes a transmission assembly mounted on an end of the support away from the adsorption