Patent Application
20210210269
The present disclosure relates to the field of thin film solar cells, particularly to a solar cell degaussing device, a solar cell production system and a solar cell degaussing method.
For products of thin film solar cell with iron as a main ingredient of a substrate material, for example, flexible copper indium gallium selenide solar thin films, a magnet is mostly used in a production process thereof for position control, and in this process, a cell slice will be magnetized, occurrence of magnetic adhesion may be thus caused, and an automatic production line for producing cell slices is usually affected by magnetic absorption, specifically, a relatively long cell slice is cut by a cutter into relatively short cell slices, which are conveyed by a conveying belt to a sorting machine, in this process, since the cutter is made of a steel and iron alloy material, and a cutter bracket is also made of iron, a magnetized cell slice is likely to be adsorbed onto the cutter, and cannot be transferred to the sorting machine of next phase, which affects the manufacturing efficiency.
Objects of the present disclosure include, for example, providing a solar cell degaussing device, so as to realize on-line degaussing for a cell slice with a metal substrate.
Objects of the present disclosure further include providing a solar cell production system for solar cells, which includes the above solar cell degaussing device, and has all features of this solar cell degaussing device.
Objects of the present disclosure further include providing a solar cell degaussing method, which can realize on-line degaussing for a cell slice with a metal substrate through this method using the above solar cell degaussing device.
A technical solution used in an embodiment of the present disclosure is as follows:
A solar cell degaussing device includes: a controller, a degausser, a sensing unit and a switching unit; the controller is connected to the sensing unit and the switching unit respectively; the switching unit is connected to the degausser; after the sensing unit detects presence of a cell slice, the controller triggers the switching unit to act so as to enable the degausser to operate, for performing a degaussing treatment to the cell slice.
Optionally, the solar cell degaussing device further includes: a transfer unit configured to carry the cell slice; the degausser is mounted on the transfer unit.
Optionally, the transfer unit includes a plurality of rollers configured to bear the cell slice; the degausser on the transfer unit is configured for the cell slice to pass through.
Optionally, the degausser is in a frame-type structure.
Optionally, the solar cell degaussing device further includes: a residual magnetism meter; the residual magnetism meter is mounted behind the degausser according to an operation direction of the transfer unit.
Optionally, the residual magnetism meter is configured to monitor a residual magnetization intensity of the cell slice after being degaussed.
Optionally, the residual magnetism meter is connected to the controller; the controller adjusts an operation power of the degausser or controls a driving speed of the transfer unit according to the residual magnetization intensity.
Optionally, the sensing unit is mounted in front of the degausser.
Optionally, a further sensing unit, configured to control the degausser in a delayed manner, is provided behind the degausser.
Optionally, the solar cell degaussing device further includes: a first power supply and a second power supply; the first power supply is connected to the controller and the sensing unit respectively; the switching unit is connected to the second power supply and the degausser respectively.
Optionally, the first power supply is a direct current power supply, and the second power supply is an alternating current power supply.
Optionally, an output voltage of the direct current power supply is 24V, and an output voltage of the alternating current power supply is 220V.
Optionally, the sensing unit is a chromatic aberration sensor.
Optionally, the switching unit is a relay.
Optionally, the relay is a time-delay relay.
An embodiment of the present disclosure provides a solar cell production system configured to produce solar cells, including the solar cell degaussing device mentioned above.
An embodiment of the present disclosure provides a solar cell degaussing method, using the above solar cell degaussing device, and the method includes: powering on the solar cell degaussing device, after the sensing unit detecting the cell slice, the controller triggering the switching unit to act so as to enable the degausser to operate, for performing a degaussing treatment to the cell slice.
Optionally, the method further includes: a residual magnetization intensity of the cell slice after being degaussed has been tracked and detected, and afterward the controller adjusting an operation power of the degausser or controlling a driving speed of the transfer unit for the transmission of the cell slice according to the residual magnetization intensity.
Optionally, the method further includes: after a further sensor provided behind the degausser according to a cell slice forwarding direction detects no cell slice, the controller controlling the switching unit to enable the degausser to end the degaussing.
Compared with the prior art, beneficial effects of the embodiments of the present disclosure at least include: For the field of solar cell production at present, the present disclosure designs the degaussing device for the solar cell with a metal substrate, and the solar cell degaussing device of the present disclosure can eliminate the magnetic of the magnetized cell slice, decrease the magnetic adsorption phenomena of facilities, and thus improve production efficiency; moreover, furthermore, in preferred solutions of the present disclosure, measurement of the residual magnetism is also taken into consideration, such that a residual magnetism quantity is visible and controllable.
In order to make the objects, technical solutions and advantages of the present disclosure more clearer, the present disclosure will be further described below in combination with figures, wherein
1 cell slice;
2 transfer unit;
3 degausser;
4 residual magnetism meter;
5 chromatic aberration sensor;
6 cell slice roll;
7 baffle;
8 bracket;
9 rotation shaft.
In order to make the objects, technical solutions, and advantages of the embodiments of the present disclosure clearer, below the technical solutions in the embodiments of the present disclosure will be described clearly and completely in conjunction with the figures in the embodiments of the present disclosure, apparently, some but not all embodiments of the present disclosure are described. Generally, components in the embodiments of the present disclosure described and shown in the figures herein can be arranged and designed in different configurations.
Therefore, the detailed description below of the embodiments of the present disclosure provided in the figures is not intended to limit the scope of protection of the present disclosure, but merely represents chosen embodiments of the present disclosure. Based on the embodiments of the present disclosure, all other embodiments obtained by a person ordinarily skilled in the art without paying inventive efforts shall fall within the scope of protection of the present disclosure.
It should be noted that similar reference signs and letters represent similar items in the following figures, therefore, once a certain item is defined in one figure, it is not needed to be further defined or explained in subsequent figures.
In the description of the present disclosure, it should be indicated that orientational or positional relationships indicated by terms such as “center”, “upper”, “lower”, “left”, “right”, “vertical”, “horizontal”, “inner”, and “outer” are based on orientational or positional relationships as shown in the figures, or orientational or positional relationships of a product of the present disclosure when being conventionally placed in use, merely for facilitating describing the present disclosure and simplifying the description, rather than indicating or suggesting that related devices or elements have to be in the specific orientation or configured and operated in a specific orientation, therefore, they should not be construed as limiting the present disclosure.
Besides, terms such as “first”, “second”, and “third” are merely for distinctive description, but should not be construed as indicating or implying relative importance.
Moreover, terms such as “horizontal” and “vertical” do not mean that a component is required to be absolutely horizontal or suspending, but can be slightly inclined. For example, by “horizontal” it merely means that a structure is more horizontal in comparison with “vertical”, rather than being completely horizontal, while the structure can be slightly inclined.
In the description of the present disclosure, it also should be indicated that unless otherwise specified and defined clearly, terms “provide”, “mount”, “join”, and “connect” should be understood in a broad sense, for example, a connection can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it also can be an inner communication between two elements. For a person ordinarily skilled in the art, specific meanings of the above-mentioned terms in the present disclosure can be understood according to specific circumstances.
The present disclosure provides an embodiment of a solar cell degaussing device, as shown by a block diagram of
After the device is powered on, the sensing unit outputs a high (or low) level to the controller after detecting presence of a cell slice, after receiving this high (or low) level, the controller triggers the switching unit to act so as to enable the degausser to be powered, and the powered degausser starts to operate to perform a degaussing treatment to the cell slice; it should be indicated that the cell slice referred to herein also can be called as a cell strip; it should be explained herein that an existing power supply of a solar energy production line, for example, a power supply unit of a conveying control system, can be used to power on the preceding device, power-on refers to supplying power to the degausser through the switching unit by the controller and the sensing unit, of course, taking lean control and mutual interference between systems into consideration, independent power supplies also can be provided for the present embodiment, and the independent power supplies will be described below.
The above embodiment further includes a transfer unit configured to carry the cell slice, the degausser mentioned in the preceding is mounted on this transfer unit, that is, the cell slice is placed on a transfer unit driven by a motor, for example, a transmission roller and a conveying belt, and is subjected to the degaussing treatment when the cell slice pass through the degausser that operates after being powered, avoiding tedious procedures from carrying the cell slice by manual or other mechanisms.
Furthermore, on the basis of the above embodiment, the present disclosure proposes to mount a residual magnetism meter behind the degausser, which residual magnetism meter is configured to track and monitor a residual magnetization intensity of the cell slice after being degaussed, wherein two points should be explained: firstly, “behind” herein refers to an output direction of the cell slice after passing through the degausser, and in combination with the transfer unit mentioned in the preceding, the residual magnetism meter is mounted behind an output end of the degausser according to a forward operation direction of the transfer unit; secondly, this residual magnetism meter can be device with a visualization screen such as a digital display, and it also can be connected to the controller (as shown in
Summing up the above embodiments and preferred solutions, the present disclosure provides a specific embodiment, as shown by the schematic diagram of
Taking the above specific parts as an example, an operating principle of the present embodiment can be as follows:
The first power supply and the second power supply are turned on, the controller and the chromatic aberration sensor are powered on, and one normally open contact end of the relay is powered;
When the transfer unit 2 (which can be a transmission roller without a belt, merely schematically shown in
The controller, after receiving this high level, outputs a control signal to a coil of the relay, the coil after being powered triggers the above mentioned normally open contact to close, then an electrical power of the second power supply is transmitted from the relay to the degausser;
The degausser starts to operate after being powered, the cell slice 1 is conveyed by the transfer unit 2 to slowly pass through the degausser, and the powered degausser generates an alternating magnetic field, so as to perform a uniform degaussing treatment to the forwarding cell slice 1;
The degaussed cell slice 1 passes by the residual magnetism meter behind the degausser, which residual magnetism meter outputs a residual magnetism numerical value of the cell slice in a digital display manner;
In front of the degausser, as the cell slice 1 forwarding, the chromatic aberration sensor outputs a low level to the controller when detecting no cell slice, and after receiving the low level, the controller cuts off the output to the relay, thus the power supplied by the second power supply to the degausser is cut off, and the degaussing is ended. It should be supplemented herein that taking an operating speed of the transfer unit 2 and an interval between the sensing unit and the degausser into consideration, in another preferred embodiment of the present disclosure, a time-delay relay is used as the switching unit, thus when the cell slice 1 leaves a detecting area of the chromatic aberration sensor, the time-delay relay does not immediately cut off the power supplied to the degausser, but after a pre-set period of time lapses, for example, after 10 minutes, a contact of the time-delay relay is restored, thereby ensuring that the cell slice 1 can be completely degaussed by the degausser, and occurrence of a small part of the cell slice 1 which is not degaussed is avoided.
In another embodiment of the present disclosure, in order to ensure complete degaussing of the cell slice, it is considered that a further sensing unit also can be provided behind the degausser and configured to control the degausser in a delayed manner according to a state of presence or absence of the cell slice (as shown in
Finally, it should be indicated that, firstly, according to models of various parts, power supplies of different specifications can be used as the first power supply and the second power supply mentioned in the preceding, for example, in the above embodiment, the first power supply can be a direct current power supply, for example, a 24V power supply commonly used in industry control, and the second power supply can be an alternating current power supply outputting 220V; secondly, in practical operations, the degausser mentioned in the preceding can be in a frame-type structure, such that all of upper and lower faces and a periphery of the cell slice can be completely degaussed; thirdly, the above embodiments and preferred solutions thereof can be adjusted according to requirements of dimension, such that they can perform the degaussing treatment for other facilities or products on the solar energy production line, for example, cutter device mentioned in the preceding text.
The present disclosure provides another embodiment of the solar cell degaussing device, as shown in
It should be indicated that as in the above embodiment, the sensing unit such as a chromatic aberration sensor (not shown in
An operating principle of the solar cell degaussing device of the present embodiment can be as follows:
The first power supply and the second power supply are turned on, the controller and the chromatic aberration sensor (not shown in
As the above embodiment, a time-delay relay can be used as the switching unit, thus when the cell slice 1 leaves a detecting area of the chromatic aberration sensor, the time-delay relay does not immediately cut off the power supplied to the degausser 3, but after a pre-set period of time lapses, for example, after 10 minutes, a contact of the time-delay relay is restored, thereby ensuring that the cell slice 1 can be completely degaussed by the degausser 3, and occurrence of a small part of the cell slice 1 which is not degaussed is avoided.
Likewise, in order to ensure complete degaussing of the cell slice 1, a further sensing unit 5 also can be provided behind the degausser 3 and configured to control the degausser 3 in a delayed manner according to a state of presence or absence of the cell slice 1, thus the power consumption can be reasonably managed and controlled more precisely. The power supplied to the degausser 3 is cut off only when the further sensing unit 5 detects that there is no cell slice 1. Thus, it can ensure that all cell slices 1 can be uniformly degaussed.
The present disclosure further provides a solar cell degaussing method using the above solar cell degaussing device, and in an embodiment shown in
The configurations, features and effects of the present disclosure are described in detail in the above according to the embodiments shown in the figures, while the above-mentioned are merely for embodiments of the present disclosure, it should be stated explicitly that a person skilled in the art can reasonably combine the technical features involved in the above embodiments and preferred embodiments thereof into a plurality of equivalent solutions, without departing from or changing the design idea and technical effects of the present disclosure; therefore, the implementation scope of the present disclosure is not limited to that shown in the figures, but when alterations or modifications made according to the concept of the present disclosure are equivalent embodiments of equal changes, and still do not go beyond the spirit covered by the description and the figures, they all should fall within the scope of protection of the present disclosure.
To sum up, the present disclosure provides a solar cell degaussing device and a solar cell production system, which can eliminate the magnetism of the magnetized cell slice, decrease the magnetic adsorption phenomena of facilities, and thus improve production efficiency.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201721440348.8 | Nov 2017 | CN | national |
This application is a 371 U.S. National Phase of International application No. PCT/CN2018/095156, filed Jul. 10, 2018, and claims benefit/priority of Chinese patent application No. 201721440348.8, filed Nov. 1, 2017 entitled “Solar Cell Degaussing Device”, the contents of all of which are incorporated herein by reference in entirety.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2018/095156 | 7/10/2018 | WO | 00 |
