CN115021649A - A PERC cell with high conversion efficiency - Google Patents

Abstract

The invention belongs to the technical field of PERC batteries, and particularly relates to a PERC battery with high conversion efficiency. According to the invention, the bedplate can rotate along with the turntable by arranging the turntable and the rotating mechanism, the inclination angle of the mounting plate is adjustable by arranging the screw rod I, the motor I and the threaded sleeve I, so that the orientation of the PERC cell panel can be adjusted according to the direction and the angle of light irradiation, the conversion efficiency of solar energy is higher, the mounting plate can be lifted along with the sliding block by arranging the lifting mechanism, the PERC cell panel can be close to the bedplate by matching with the arrangement of the motor I, and the influence of wind power on the overall structure of the PERC cell is reduced.

Description

A PERC cell with high conversion efficiency

technical field

The invention relates to the technical field of PERC cells, in particular to a PERC cell with high conversion efficiency.

Background technique

PERC (Passivated Emitter and Rear Cell), that is, passivated emitter and back cell technology, is currently becoming a conventional technology for a new generation of solar cells. PERC has been continuously refreshed in efficiency records in recent years, and will become the most cost-effective technology in the next three years. PERC technology improves conversion efficiency by adding a dielectric passivation layer on the backside of the cell. Better efficiency levels in standard cell structures are limited by the tendency of photogenerated electrons to recombine. PERC cells maximize the potential gradient across the P-N junction, which allows for more stable electron flow, reduced electron recombination, and higher efficiency levels.

At present, most of the PERC solar cells on the market are expensive. Once installed, it is not easy to change the direction and angle at will. The angle of sunlight exposure is different for 24 hours a day and 12 months a year, so the efficiency of solar energy conversion is different. Generally low, and the existing PERC solar panels need to manually move the solar panels when the light irradiation angle changes, and the problem of breaking the installation structure is easy to occur during manual movement, causing economic losses. At the same time, due to the PERC solar cells In order to receive more light, they are usually installed obliquely. In stormy weather, the connection with the ground is easily affected by the wind, resulting in loosening of the connection with the ground, resulting in potential safety hazards. Therefore, a high conversion efficiency is proposed. PERC battery to solve the above problems.

SUMMARY OF THE INVENTION

(1) Technical problems solved

In view of the deficiencies of the prior art, the present invention provides a PERC cell with high conversion efficiency, which solves the problems of insufficient swivel efficiency and potential safety hazards in extreme weather mentioned in the above background art.

(2) Technical solutions

The present invention specifically adopts the following technical solutions in order to achieve the above object:

A PERC cell with high conversion efficiency, comprising a base plate, a platen is arranged above the base plate, a turntable is fixed on the lower surface of the platen through a straight rod, the turntable is connected to the base plate through a rotating mechanism, and the platen is Two ends of the upper surface are symmetrically fixed with a sliding cylinder, the inner side of the sliding cylinder is slidably connected with a sliding block, the two sliding blocks are connected by a lifting mechanism, and the opposite ends of the two sliding blocks are fixed with L One end of the L-shaped plate extends through the sliding cylinder to the outside thereof, a screw rod is rotatably connected between the two L-shaped plates, and a motor 1 is fixed on a side wall of one of the L-shaped plates, so The driving end of the first motor is connected with one end of the screw one, the screw one is threadedly connected with a threaded sleeve one, one end of the threaded sleeve one is fixed with a mounting plate, and the upper surface of the mounting plate is fixed with a PERC battery The four corners of the upper surface are fixed with connecting plates, and two screws are rotatably connected between the two opposite connecting plates, and the two screws are connected by a driving mechanism. Two threaded sleeves are both threadedly connected to the second, and U-shaped plates are fixed at the lower ends of the two threaded sleeves. A brush cylinder is rotatably connected between the two side walls of the U-shaped plates. A second motor is fixed on one side wall, and the driving end of the second motor is connected with the rotating shaft of the brush cylinder.

Further, the rotating mechanism includes a motor 3 fixed on the upper surface of the turntable, and a rotating rod is rotatably connected to the middle position of the turntable. Gears are fixed on the drive shaft and the rotating rod of the third motor, and the two gears are connected by a toothed belt drive. The rotating mechanism also includes an annular chute on the lower surface of the turntable. An arc-shaped sliding plate slidingly connected with the annular chute is fixed symmetrically on both sides.

Further, the lifting mechanism comprises a screw rod rotatably connected with the inner top wall of the sliding cylinder, the screw rod is threadedly connected with the slider, and the lower end of the screw rod extends through the platen to the bottom and is fixed with a transmission wheel 1 , The two transmission wheels 1 are connected by a transmission belt 1, and the lower end of one of the screw rods is connected with the motor 4 fixed on the lower surface of the platen.

Further, the driving mechanism includes a transmission wheel two fixed on two ends of the screw rod, the two transmission wheel two are connected by a transmission belt two, and one of the screw rod two is connected to the motor fixed on one side wall of the connecting plate. The drive terminals of five are connected.

Further, a water sprayer is fixed on the upper end of the upper surface of the mounting plate, and a spray head is equidistantly arranged at one end of the water sprayer toward the PERC battery plate, a water pump is fixed on the upper surface of the bottom plate, and the water supply end of the water pump is fixed. The first hose is communicated with the water sprayer, and the second hose is connected to the pumping end of the water pump.

Further, a temperature and humidity sensor is fixed on the upper surface of the bottom plate.

Further, an arc-shaped water blocking plate is fixed between the two opposite connecting plates, and a supporting foot is provided on the lower surface of the bottom plate.

Further, both ends of the upper surface of the platen are fixed with backing plates.

(3) Beneficial effects

Compared with the prior art, the present invention provides a PERC cell with high conversion efficiency, which has the following beneficial effects:

In the present invention, by setting the turntable and the rotating mechanism, the table can be rotated with the turntable, and by setting the screw 1, the motor 1 and the threaded sleeve 1, the inclination angle of the mounting plate can be adjusted, so that the direction and angle of the light irradiation can be adjusted according to the light. Adjust the orientation of the PERC panel to make the conversion efficiency of solar energy higher. By setting the lifting mechanism, the mounting panel can be lifted up and down with the slider. With the setting of the motor 1, the PERC panel can be close to the table in extreme weather conditions. , reducing the impact of wind on the overall structure of the PERC cell.

Description of drawings

Fig. 1 is the front view three-dimensional structure schematic diagram of the present invention;

2 is a schematic diagram of a rear view three-dimensional structure of the present invention;

Fig. 3 is the front view structure schematic diagram of the present invention;

4 is a schematic diagram of a rear cross-sectional structure of the present invention;

FIG. 5 is a schematic structural diagram of the rear mounting plate of the present invention.

In the figure: 1. Bottom plate; 2. Platen; 3. Straight rod; 4. Turntable; 5. Rotating mechanism; 501, Motor 3; 502, Rod; ;506, arc slide plate; 6, sliding cylinder; 7, L-shaped plate; 8, lifting mechanism; 801, screw rod; 802, motor four; 803, transmission wheel one; 804, conveyor belt one; 9, screw one; 10 1, motor 1; 11, threaded sleeve 1; 12, mounting plate; 13, PERC battery board; 14, connecting plate; 15, screw 2; 16, drive mechanism; 1601, transmission wheel 2; 1602, conveyor belt 2; 1603, Motor five; 17, threaded sleeve two; 18, U-shaped plate; 19, brush cylinder; 20, motor two; 21, water sprayer; 22, nozzle; 23, water pump; 24, hose one; 25, hose Two; 26, temperature and humidity sensor; 27, arc water baffle; 28, backing plate; 29, feet; 30, slider.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Example

As shown in FIGS. 1-5 , a PERC cell with high conversion efficiency proposed by an embodiment of the present invention includes a bottom plate 1 , a platen 2 is arranged above the bottom plate 1 , and the lower surface of the platen 2 is fixed by a straight rod 3 There is a turntable 4, the turntable 4 is connected with the bottom plate 1 through the rotating mechanism 5, the two ends of the upper surface of the table plate 2 are symmetrically fixed with a sliding cylinder 6, the inner side of the sliding cylinder 6 is slidably connected with a sliding block 30, and the two sliding blocks 30 pass through. The lifting mechanism 8 is connected by transmission, the opposite ends of the two sliders 30 are fixed with an L-shaped plate 7, one end of the L-shaped plate 7 extends through the sliding cylinder 6 to the outside thereof, and a screw rod is rotatably connected between the two L-shaped plates 7. 9. One side wall of one L-shaped plate 7 is fixed with a motor one 10, the driving end of the motor one 10 is connected with one end of the screw one 9, the screw one 9 is threadedly connected with a threaded sleeve one 11, and the screw sleeve one 11 One end of the mounting plate 12 is fixed with a mounting plate 12, the upper surface of the mounting plate 12 is fixed with a PERC battery plate 13, and the four corners of the upper surface are fixed with connecting plates 14, and two opposite connecting plates 14 are rotatably connected with screw two 15 , the two screw rods 15 are connected by a driving mechanism 16, and the two screw rods 15 are threadedly connected with a threaded sleeve two 17, and the lower ends of the two threaded sleeves 17 are fixed with a U-shaped plate 18. The U-shaped plate A brush cylinder 19 is rotatably connected between the two side walls of the U-shaped plate 18, a motor two 20 is fixed on one side wall of the U-shaped plate 18, and the driving end of the motor two 20 is connected with the rotating shaft of the brush cylinder 19. In conclusion, the PERC battery is installed Afterwards, the platen 2 can be driven by the rotating mechanism 5 to realize rotation, and the mounting plate 12 can be driven by the motor-10 to drive the screw-9 screwed with the threaded sleeve-11 to realize rotation. Therefore, the mounting plate 12 arranged on the platen 2 can be rotated. The orientation and inclination angle can be adjusted, so that the PERC panel 13 can always be perpendicular to the direction of sunlight. Therefore, the solar energy conversion efficiency of the PERC cell is relatively high. When encountering extreme weather such as storms, the installation is made by the motor one 10. The plate 12 is parallel to the platen 2, and the slider 30 is moved downward by the lifting mechanism 8 to make the threaded sleeve 11 fit with the upper surface of the platen 2, so that the mounting plate 12 is less affected by the wind, and the connecting parts are not easily damaged. Damaged, by arranging the second screw 15 and the driving mechanism 16, the brush cylinder 19 can be driven to slide back and forth on the upper surface of the PERC cell panel 13, so the surface of the PERC cell panel 13 can be cleaned to avoid dust coverage affecting the solar energy of the PERC cell panel 13. Conversion efficiency.

As shown in FIG. 4 , in some embodiments, the rotating mechanism 5 includes a motor 3 501 fixed on the upper surface of the turntable 4 , a rotating rod 502 is rotatably connected to the middle position of the turntable 4 , and the lower end of the rotating rod 502 extends through the turntable 4 to the The lower part is fixed with the upper surface of the bottom plate 1, the drive shaft of the third motor 501 and the rotating rod 502 are both fixed with a gear 503, and the two gears 503 are connected by a toothed belt 504. The annular chute 505 on the surface, the two sides of the upper surface of the bottom plate 1 are symmetrically fixed with an arc-shaped sliding plate 506 slidably connected with the annular chute 505. When the motor 3 501 is working, the rotating rod 502 is driven by the gear 503 and the toothed belt 504 to rotate. , since the lower end of the rotating rod 502 is fixed with the bottom plate 1, the rotating plate 4 will rotate under the driving of the motor 3 501, so the orientation of the mounting plate 12 can be changed. It is more stable when turning.

As shown in FIG. 4 , in some embodiments, the lifting mechanism 8 includes a lead screw 801 rotatably connected to the inner top wall of the sliding cylinder 6 , the lead screw 801 is threadedly connected with the slider 30 , and the lower end of the lead screw 801 extends through the platen 2 A transmission wheel 803 is fixed below it, the two transmission wheels 1 803 are connected by a transmission belt 1 804, and the lower end of one screw 801 is connected with the motor 4 802 fixed on the lower surface of the table 2, and the motor 4 802 During operation, the two screw rods 801 are rotated synchronously by the transmission wheel 1 803 and the conveyor belt 1 804, so that the sliding block 30 threadedly connected with them moves up and down in the sliding cylinder 6, so the height of the mounting plate 12 can be adjusted.

As shown in FIG. 5 , in some embodiments, the driving mechanism 16 includes a second transmission wheel 1601 fixed at one end of the second screw 15 , and the two transmission wheels 1601 are connected by a transmission belt through a second conveyor belt 1602 , wherein one of the second screw 15 is fixed to the second transmission wheel 1601 . The driving end of the motor five 1603 on one side wall of the connecting plate 14 is connected to the driving end of the motor five 1603. Through the setting of the transmission wheel two 1601 and the conveyor belt two 1602, the motor five 1603 can make the two screws two 15 rotate synchronously. Therefore, the two threaded sleeves two 17 It can move synchronously under the limitation of the U-shaped plate 18 .

As shown in FIG. 1 , FIG. 3 and FIG. 5 , in some embodiments, a water sprayer 21 is fixed on the upper end of the upper surface of the mounting plate 12 , and the end of the water sprayer 21 facing the PERC battery plate 13 is provided with spray heads 22 equidistantly. A water pump 23 is fixed on the upper surface of the bottom plate 1. The water supply end of the water pump 23 is communicated with the water sprayer 21 through a hose one 24, and a hose two 25 is connected to the water pumping end of the water pump 23. When the outside air temperature is too high or the PERC cell panel 13 is dirty and difficult to clean by the brush cylinder 19 , running water can be used to cool down or clean the surface of the PERC cell panel 13 .

As shown in FIG. 1 , in some embodiments, a temperature and humidity sensor 26 is fixed on the upper surface of the base plate 1. The model of the temperature and humidity sensor 26 mentioned here is LS-TH01, which can detect the temperature and humidity of the surrounding environment, and use the temperature and humidity The sensor 26 transmits the signal of the temperature and humidity conditions to the peripheral control device, so that the maintainer of the PERC battery can remotely understand the weather conditions of the installation environment of the PERC battery, which is convenient for protecting the PERC battery. By setting the temperature and humidity sensor 26 on the base plate 1 on, to avoid direct sunlight.

As shown in FIG. 1 , in some embodiments, an arc-shaped water baffle 27 is fixed between the two opposite connecting plates 14 , and a support foot 29 is provided on the lower surface of the bottom plate 1 . Reduce the chance of the surface of the screw II 15 being contaminated with rainwater and dust, so as to prolong its service life.

As shown in FIG. 1 and FIG. 3 , in some embodiments, both ends of the upper surface of the platen 2 are fixed with backing plates 28 . By setting the backing plates 28 , when the mounting plate 12 is placed at the lowest level, the two ends of the lower surface of the platen 2 are fixed. The ends are respectively attached to the upper surfaces of the two backing plates 28 , so that the mounting plate 12 can be placed more stably.

Finally, it should be noted that the above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the The technical solutions described in the foregoing embodiments may be modified, or some technical features thereof may be equivalently replaced. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (8)

1. A PERC cell with high conversion efficiency, comprising a base plate (1), characterized in that: a platen (2) is provided above the base plate (1), and the lower surface of the platen (2) passes through a straight rod (3) a turntable (4) is fixed, and the turntable (4) is connected with the bottom plate (1) through a rotating mechanism (5), and sliding cylinders (6) are symmetrically fixed on both ends of the upper surface of the table top (2), A sliding block (30) is slidably connected to the inner side of the sliding cylinder (6), and the two sliding blocks (30) are connected by means of a lifting mechanism (8), and the opposite ends of the two sliding blocks (30) are connected Both are fixed with L-shaped plates (7), one end of the L-shaped plates (7) extends through the sliding cylinder (6) to the outside thereof, and a screw rod (9) is rotatably connected between the two L-shaped plates (7). ), one side wall of one of the L-shaped plates (7) is fixed with a motor one (10), the driving end of the motor one (10) is connected with one end of the screw one (9), the screw one (9) ) is threadedly connected with a threaded sleeve one (11), one end of the threaded sleeve one (11) is fixed with a mounting plate (12), and a PERC battery plate (13) is fixed on the upper surface of the mounting plate (12). , and the four corners of its upper surface are all fixed with connecting plates (14), two screws (15) are rotatably connected between the two opposite connecting plates (14), and between the two two screws (15) Through the transmission connection of the driving mechanism (16), two threaded sleeves (17) are threadedly connected to the two second screws (15), and the lower ends of the two threaded sleeves (17) are fixed with a U-shaped plate ( 18), a brush cylinder (19) is rotatably connected between the two side walls of the U-shaped plate (18), and a second motor (20) is fixed on one side wall of the U-shaped plate (18). The driving end of (20) is connected with the rotating shaft of the brush cylinder (19). 2. A PERC battery with high conversion efficiency according to claim 1, characterized in that: the rotating mechanism (5) comprises a motor three (501) fixed on the upper surface of the turntable (4), and the turntable (4) ) is rotatably connected with a rotating rod (502) in the middle position, the lower end of the rotating rod (502) extends through the rotating plate (4) to the bottom and is fixed with the upper surface of the bottom plate (1). Gears (503) are fixed on both the drive shaft and the rotating rod (502), and the two gears (503) are connected in a transmission through a toothed belt (504). ) on the lower surface of the annular chute (505), the two sides of the upper surface of the bottom plate (1) are symmetrically fixed with arc-shaped sliding plates (506) slidably connected with the annular chute (505). 3. The PERC battery with high conversion efficiency according to claim 1, wherein the lifting mechanism (8) comprises a lead screw (801) rotatably connected to the inner top wall of the sliding cylinder (6), and the The screw rod (801) is threadedly connected with the slider (30), and the lower end of the screw rod (801) extends through the platen (2) to the bottom and is fixed with a first transmission wheel (803). (803) are connected by a transmission belt 1 (804), and the lower end of one of the screw rods (801) is connected with the motor 4 (802) fixed on the lower surface of the platen (2). 4. A PERC battery with high conversion efficiency according to claim 1, characterized in that: the drive mechanism (16) comprises a second transmission wheel (1601) fixed on one end of the second screw (15), and the two said The two transmission wheels (1601) are connected by a transmission belt two (1602), and one of the two screws (15) is connected with the driving end of the motor five (1603) fixed on one side wall of the connecting plate (14). 5. The PERC cell with high conversion efficiency according to claim 1, wherein a water sprayer (21) is fixed on the upper end of the upper surface of the mounting plate (12), and the water sprayer (21) One end facing the PERC battery plate (13) is provided with spray heads (22) equidistantly, a water pump (23) is fixed on the upper surface of the bottom plate (1), and the water supply end of the water pump (23) passes through a hose one (24) It is communicated with the water sprayer (21), and a second hose (25) is connected to the water pumping end of the water pump (23). 6 . The PERC battery with high conversion efficiency according to claim 1 , wherein a temperature and humidity sensor ( 26 ) is fixed on the upper surface of the bottom plate ( 1 ). 7 . 7 . The PERC cell with high conversion efficiency according to claim 1 , wherein an arc-shaped water baffle ( 27 ) is fixed between the two opposite connecting plates ( 14 ), and the bottom plate ( 1) The lower surface is provided with feet (29). 8 . The PERC cell with high conversion efficiency according to claim 1 , wherein backing plates ( 28 ) are fixed on both ends of the upper surface of the platen ( 2 ). 9 .

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