Electromagnetic heating plate for photovoltaic module laminating machine and photovoltaic module laminating machine
By using electromagnetic heating plates in the photovoltaic module laminator and using a spiral wound electromagnetic coil for electromagnetic heating, the problem of high energy consumption in traditional electric heating is solved, and the high-efficiency and low-energy heating effect is achieved.
Patent Information
- Application Number
- CN202421171072.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-05-27
AI Technical Summary
The electrical heating method of traditional photovoltaic module laminators has problems of high energy consumption and environmental pollution, especially oil heating requires frequent replacement of thermally conductive oil, while electrical heating consumes a lot of electricity and increases lamination cost.
An electromagnetic heating plate is adopted, including a heating plate body and an electromagnetic heating module arranged on the lower surface of the heating plate. The electromagnetic heating module is composed of a plurality of spiral wound electromagnetic coils, and the alternating magnetic field is generated by an alternating current to achieve heating.
On the premise of ensuring the heating effect, electromagnetic heating significantly reduces electrical energy consumption, and improves electromagnetic utilization and heating efficiency through the magnetic field strengthening effect.
Smart Images
Figure CN222839843U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of photovoltaic module production equipment manufacturing, and specifically to an electromagnetic heating plate for a photovoltaic module laminating machine. Background Art
[0002] As the installed capacity of photovoltaic power generation increases day by day, as a key equipment in the production process of photovoltaic modules, the specifications of photovoltaic module laminators are constantly increasing, and the energy consumption problem that comes with it has also become a key issue of concern in the industry. Traditional photovoltaic module laminators generally use oil heating or electric heating. Among them, oil heating requires regular replacement of thermal oil, which causes great damage to the environment. Electric heating methods such as electric heating tube heating and electric heating plate heating consume a lot of electricity, which increases the lamination cost of photovoltaic modules. Utility Model Content
[0003] In order to solve the above technical problems existing in the existing bearing platform, the present application provides a bearing platform, which adopts the following technical solutions:
[0004] An electromagnetic heating plate for a photovoltaic module laminator comprises a heating plate body and at least one electromagnetic heating module arranged on the lower surface of the heating plate body;
[0005] The electromagnetic heating module includes at least two electromagnetic coils, which are formed by winding a metal wire along a spiral path from inside to outside or from outside to inside;
[0006] After the electromagnetic coil is energized, the current directions of adjacent metal wires of adjacent electromagnetic coils are the same, and the magnetic flux directions of two adjacent electromagnetic coils are opposite.
[0007] The electromagnetic heating plate for photovoltaic module laminator provided in the present application has an electromagnetic heating module composed of a plurality of electromagnetic coils arranged in an array on the lower surface of the heating plate body. When an alternating current is passed through the electromagnetic heating module, the electromagnetic coil generates an alternating magnetic field, and finally electromagnetic heating of the heating plate body is achieved. Compared with traditional electric heating, electromagnetic heating significantly reduces power consumption while ensuring the heating effect.
[0008] In addition, since the magnetic flux directions of adjacent electromagnetic coils are opposite, the effect of magnetic field reinforcement can be produced, thereby improving electromagnetic utilization and achieving rapid heating.
[0009] In some embodiments, the electromagnetic coil is rectangular, and at least two electromagnetic coils are arranged in an array.
[0010] The electromagnetic coils are configured in a rectangular shape and arranged in an array on the lower surface of the heating plate body, which can reduce the gaps between the electromagnetic coils, improve space utilization, and ultimately improve heating efficiency.
[0011] In some embodiments, at least two electromagnetic coils in the same electromagnetic heating module are formed by continuously winding a metal wire, and the two ends of the metal wire are used to connect the two poles of a power source.
[0012] Rapid winding and forming of the electromagnetic heating cores in the same group is achieved, and the electromagnetic heating cores in the same group are connected in series to the two poles of the power supply.
[0013] In some embodiments, for the adjacent i-th electromagnetic coil and i+1-th electromagnetic coil formed by sequentially winding metal wire, the winding path of the metal wire of the i-th electromagnetic coil is from inside to outside, and the winding path of the metal wire of the i+1-th electromagnetic coil is from outside to inside; or, the winding path of the metal wire of the i-th electromagnetic coil is from outside to inside, and the winding path of the metal wire of the i+1-th electromagnetic coil is from inside to outside.
[0014] In this way, it can be achieved that the current directions of adjacent metal wires of two adjacent electromagnetic coils formed by winding in sequence are the same.
[0015] In some embodiments, the winding process of the three electromagnetic coils formed by continuous winding is: the metal wire is wound from the first center point along the first spiral path from the inside to the outside to the first outer point to form a first electromagnetic coil composed of several turns of metal wire; the metal wire is wound from the first outer point along the second spiral path from the outside to the inside to the second center point to form a second electromagnetic coil composed of several turns of metal wire; the metal wire wound to the second center point continues to the third center point, and then is wound from the inside to the outside to the second outer point to form a third electromagnetic coil composed of several turns of metal wire.
[0016] In this way, it can be achieved that the current directions of adjacent metal wires of two adjacent electromagnetic coils formed by winding in sequence are the same.
[0017] In some embodiments, the electromagnetic heating module also includes a supporting plate, on which a plurality of spiral wire grooves arranged in an array are provided, and metal wires are wound in the wire grooves to form electromagnetic coils; the supporting plate is mounted on the lower surface of the hot plate body.
[0018] The metal wire is wound in the wire groove on the carrier plate to achieve the pre-preparation and forming of the electromagnetic heating module. Subsequently, the electromagnetic heating module is directly mounted on the lower surface of the heating plate body as a whole to complete the rapid assembly of the electromagnetic heating plate of the present application. In addition, when the annular electromagnetic coil in the electromagnetic heating module is damaged, the electromagnetic heating module can be replaced as a whole.
[0019] In some embodiments, the carrying plate is an insulating plate or a metal plate, and the heating plate is a metal plate.
[0020] Using an insulating plate as a carrier plate can play a role in heat insulation after the electromagnetic heating module is mounted on the heating plate body. Using a metal plate as a carrier plate is conducive to the heat dissipation of the electromagnetic coil, and the electromagnetic wire around the electromagnetic coil can also be fully utilized to heat the metal plate. The heat is transferred to the heating plate body through the metal plate, further improving the heating efficiency of the electromagnetic coil.
[0021] In some embodiments, a winding area is provided on the lower surface of the heating plate body, and a spiral wire groove is provided in the winding area. The metal wire is wound in the wire groove to form an electromagnetic coil.
[0022] The electromagnetic coil is directly installed in the wire groove on the lower surface of the heating plate body, so that the electromagnetic coil can directly heat the heating plate body, further improving the heating efficiency.
[0023] In some embodiments, the electromagnetic heating plate further comprises a temperature sensor mounted within the heating plate body.
[0024] By arranging a temperature sensor in the heating plate body, real-time monitoring of the temperature of the heating plate body is achieved, and ultimately it is ensured that the electromagnetic heating core heats the heating plate body to a predetermined temperature value.
[0025] In some embodiments, the electromagnetic coil is formed by at least two metal wires being wound in parallel, and / or the electromagnetic coil is wound with at least two turns.
[0026] By providing an electromagnetic coil including multiple turns of metal wire, the magnetic flux of the electromagnetic coil can be further increased, and the heating performance of the electromagnetic coil can be further improved. Of course, in order to ensure that the multiple turns of the metal coil can be tightly wound in the wire slot, the depth of the wire slot needs to be increased.
[0027] An embodiment of the present application also provides a photovoltaic module laminating machine, which includes the electromagnetic heating plate, conveyor belt, upper pressing device and vacuum device as described in any of the above items, the conveyor belt is mounted on the outside of the electromagnetic heating plate, the conveyor belt is used to convey the photovoltaic module to the top of the electromagnetic heating plate, the electromagnetic heating plate is used to heat the photovoltaic module located above the electromagnetic heating plate, the upper pressing device is used to seal the photovoltaic module located above the electromagnetic heating plate to the electromagnetic heating plate to form a lamination cavity between the electromagnetic heating plate and the upper pressing device, the vacuum device is used to vacuum the lamination cavity, and the upper pressing device is also used to apply pressure to the photovoltaic module after the photovoltaic module is heated.
[0028] The laminator provided in the present application implements lamination processing of photovoltaic modules by means of electromagnetic heating, which reduces the power consumption during the lamination process. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1 This is a bottom view structural diagram of the electromagnetic heating plate of an embodiment of the present application;
[0030] Figure 2 This is a schematic side view of the electromagnetic heating plate of an embodiment of the present application;
[0031] Figure 3 This is a schematic cross-sectional structural diagram of an electromagnetic heating plate according to an embodiment of the present application;
[0032] Figure 4 This is a schematic cross-sectional structural diagram of an electromagnetic heating plate according to another embodiment of the present application.
[0033] Figures 1 to 4 The device comprises: a heating plate body 1, an electromagnetic coil 2, a metal wire 3, a bearing plate 4, a temperature sensor 5, and a heat insulation layer 6. DETAILED DESCRIPTION
[0034] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0035] like Figures 1 to 4 As shown, the electromagnetic heating plate for a photovoltaic module laminator according to an embodiment of the present application includes a heating plate body 1 and at least one electromagnetic heating module arranged on the lower surface of the heating plate body 1 .
[0036] In one implementation, the heating plate body 1 and the electromagnetic heating module are substantially the same size, and one electromagnetic heating module can heat the heating plate body 1 .
[0037] In one implementation, the heating plate body can be an integer multiple of the size of the electromagnetic heating module, for example, the heating plate body is the size of two electromagnetic heating modules, and the two electromagnetic heating modules heat the heating plate body together. Alternatively, the heating plate body is the size of three electromagnetic heating modules, and the three electromagnetic heating modules are arranged side by side to heat the heating plate body together. Alternatively, the heating plate body is approximately the size of four electromagnetic heating modules, and the four electromagnetic heating modules can be arranged in a line below the heating plate body to heat the heating plate body, or the four electromagnetic heating modules can be arranged in two parallel rows to heat the heating plate body.
[0038] Of course, the sizes of the electromagnetic heating modules can also be different, as long as they can be pieced together to be roughly equal to the area of the heating plate body.
[0039] Different electromagnetic heating modules may share the metal wire, or different electromagnetic heating modules may each be provided with a separate metal wire.
[0040] The electromagnetic heating module includes at least two electromagnetic coils 2, for example, Figure 1The electromagnetic heating module shown in the figure comprises 12 electromagnetic coils 2. The electromagnetic coils 2 are formed by winding a metal wire 3 along a spiral path from inside to outside or from outside to inside.
[0041] Of course, the electromagnetic coils can be adjusted to 3, 4, 5, 6, ..., 15, 16, 17, 18, ..., 30, 31, 32, etc. according to the actual size of the electromagnetic coils. When one electromagnetic heating module is used to heat the heating plate body, the number of electromagnetic coils can also be 50 or more.
[0042] After the alternating current is passed into the electromagnetic coil 2, the alternating current generates an alternating magnetic field in the electromagnetic coil 2. The portion of the heating plate body 1 corresponding to the electromagnetic coil 2 cuts the magnetic field lines of the alternating magnetic field, thereby generating an alternating current, i.e., an eddy current, in the heating plate body 1. The eddy current causes atoms to move irregularly at high speed, and the atoms collide and rub against each other to generate heat energy, thereby achieving heating of the heating plate body 1.
[0043] In particular, after the electromagnetic coil 2 is energized, the current directions of adjacent metal wires of adjacent electromagnetic coils 2 are the same, so that the magnetic flux directions of two adjacent electromagnetic coils 2 are opposite, thereby producing an effect of magnetic field enhancement, ultimately improving electromagnetic utilization and achieving rapid heating.
[0044] like Figure 1 As shown, optionally, the electromagnetic coil 2 is rectangular, and the electromagnetic coils in the same electromagnetic heating module are arranged in an array. Such an arrangement can reduce the gap between adjacent electromagnetic coils 2, improve space utilization, and further improve the heating efficiency of the electromagnetic heating module. Of course, the electromagnetic coil 2 can also be set to other shapes such as round, elliptical, etc.
[0045] Optional, such as Figure 1 As shown, the electromagnetic coil in the same electromagnetic heating module is formed by continuously winding a metal wire 3, and the two ends of the metal wire 3 (such as Figure 1 The A end and the B end in the electromagnetic heating module are used to connect the two poles of the power supply. In this way, the electromagnetic coil 2 of the same electromagnetic heating module can be quickly wound and formed, and the electromagnetic coil 2 of the same electromagnetic heating module is connected in series to the two poles of the power supply, and the power supply simultaneously passes the alternating current into all the electromagnetic coils 2 of the same electromagnetic heating module.
[0046] Optionally, for the adjacent i-th electromagnetic coil 2 and i+1-th electromagnetic coil 2 formed by sequentially winding metal wires, the winding path of the metal wire of the i-th electromagnetic coil is from inside to outside, and the winding path of the metal wire of the i+1-th electromagnetic coil is from outside to inside. Alternatively, the winding path of the metal wire of the i-th electromagnetic coil is from outside to inside, and the winding path of the metal wire of the i+1-th electromagnetic coil is from inside to outside. With such winding, when an alternating current is passed from both ends of the metal wire 3 to each electromagnetic coil 2, the current directions of the adjacent metal wires of the i-th electromagnetic coil 2 and the i+1-th electromagnetic coil 2 are the same, which ultimately achieves the effect of strengthening the magnetic field.
[0047] For example, Figure 1 As shown in the figure, the winding path of the metal wire of the first electromagnetic coil 2 is from inside to outside, and the winding path of the metal wire of the second electromagnetic coil is from outside to inside. After the alternating current is passed from both ends of the metal wire 3 to each electromagnetic coil 2, the current direction of the adjacent metal wires of the first electromagnetic coil 2 and the second electromagnetic coil 2 ( Figure 1 The same as the arrow in FIG. 2 is shown in FIG. 2 ), so that the magnetic flux directions of the first electromagnetic coil 2 and the second electromagnetic coil 2 are opposite.
[0048] For another example, the winding path of the metal wire of the second electromagnetic coil 2 is from outside to inside, and the winding path of the metal wire of the third electromagnetic coil is from inside to outside. After the alternating current is passed from both ends of the metal wire 3 to each electromagnetic coil 2, the current direction of the adjacent metal wires of the second electromagnetic coil 2 and the third electromagnetic coil 2 ( Figure 1 The same as the arrow in FIG. 2 is shown in FIG. 2 ), so that the magnetic flux directions of the second electromagnetic coil 2 and the third electromagnetic coil 2 are opposite.
[0049] Continue to refer Figure 1 As shown, optionally, the winding process of the three electromagnetic coils 2 (for example, the first, second and third electromagnetic coils 2) formed by continuous winding is as follows: the metal wire 3 is wound from the first center point a along the first spiral path from the inside to the outside to the first peripheral point, thereby forming the first electromagnetic coil 2 consisting of a plurality of turns of metal wire. The metal wire is then wound from the outside to the inside along the second spiral path from the first peripheral point to the second center point b, thereby forming the second electromagnetic coil 2 consisting of a plurality of turns of metal wire. The metal wire 3 wound to the second center point continues to the third center point c, and then is wound from the inside to the outside to the second peripheral point, thereby forming the third electromagnetic coil 2 consisting of a plurality of turns of metal wire. By repeating the above winding process, the winding of all electromagnetic coils 2 can be completed, and it is ensured that the current directions of adjacent metal wires of adjacent electromagnetic coils 2 are the same after power is turned on.
[0050] like Figure 2 and Figure 3As shown, optionally, the electromagnetic heating module also includes a carrier plate 4, on which a plurality of spiral wire grooves arranged in an array are provided, and the metal wire 3 is wound in the wire groove to form the electromagnetic coil 2. The metal wire 4 is wound in the wire groove on the carrier plate 4, so as to achieve the pre-preparation and forming of the electromagnetic heating module. Subsequently, the electromagnetic heating module is directly mounted as a whole on the lower surface of the heating plate body 1 to complete the rapid assembly of the electromagnetic heating plate of the present application. In addition, when the electromagnetic coil 2 is damaged, the electromagnetic heating module can be directly replaced.
[0051] Optionally, an insulating board is used as the bearing board 4 , and after the electromagnetic heating module is mounted on the heating board body 1 , the insulating board can play a role of heat insulation.
[0052] Optionally, the carrier plate 4 and the heating plate body 1 are both metal plates. Using a metal plate as the carrier plate 4 is conducive to heat dissipation of the electromagnetic coil 2. In addition, the electromagnetic wire around the electromagnetic coil 2 can also be fully utilized to heat the metal plate, and the heat can eventually be conducted to the heating plate body 1 through the metal plate, thereby further improving the heating efficiency of the electromagnetic coil.
[0053] In order to reduce heat loss, optionally, after the carrier plate 4 is mounted on the lower surface of the heating plate body 1, a heat insulation layer 6 is laid on the lower surface of the heating plate body 1 to cover the electromagnetic heating module. The heat insulation layer 6 can be, for example, heat insulation cotton.
[0054] Of course, if Figure 4 As shown, a winding area may also be directly provided on the lower surface of the heating plate body 1 , wherein a spiral wire groove is provided in the winding area, and the metal wire 3 is wound in the wire groove to form the electromagnetic coil 2 .
[0055] Similarly, in order to reduce heat loss, optionally, after the electromagnetic coil 2 is wound and formed, a heat insulation layer 6 may be applied on the lower surface of the heat plate body 1 .
[0056] like Figure 3 and Figure 4 As shown, optionally, the electromagnetic heating plate in the embodiment of the present application further includes a temperature sensor 5 installed in the heating plate body 1. By arranging the temperature sensor 5 in the heating plate body 1, real-time monitoring of the temperature of the heating plate body 1 is achieved, and finally it is ensured that the electromagnetic heating module heats the heating plate body 1 to a predetermined temperature value. For example, the temperature sensor 5 is connected to the controller signal of the power supply providing the alternating current, and the temperature sensor 5 transmits the collected temperature value of the heating plate body 1 to the controller of the power supply, and the controller of the power supply generates a control signal based on the temperature value, and finally the power supply passes an alternating current of a suitable size into the electromagnetic coil 2.
[0057] Optionally, the electromagnetic coil 2 is formed by winding at least two metal wires in parallel, and / or the electromagnetic coil is wound into at least two turns. By providing a multi-turn electromagnetic coil, the magnetic flux of the electromagnetic coil can be further increased, and the heating performance of the electromagnetic coil can be further improved. Of course, in order to ensure that the multi-turn metal coil can be tightly wound in the wire slot, the depth of the wire slot needs to be increased.
[0058] In one embodiment, the electromagnetic coil can be formed by winding two metal wires in parallel. Of course, it can also be formed by winding three, four, five or even more metal wires in parallel. In another embodiment, two metal wires are first wound in parallel, and after completing one winding, they are wound again along the first winding path to form a two-turn coil. In another embodiment, one metal wire is first wound, and after completing one winding, another metal wire can be used to wind the electromagnetic coil again along the first winding path to form a two-turn coil. Of course, it is also possible to wind two, three, four or even more times along the first winding path to form a multi-turn coil.
[0059] The embodiment of the present application also provides a photovoltaic module laminator, which includes the electromagnetic heating plate provided by any of the above embodiments, as well as a conveyor belt, a pressing device and a vacuum device, wherein the conveyor belt is sleeved on the outside of the electromagnetic heating plate, the conveyor belt is used to convey the photovoltaic module to the top of the electromagnetic heating plate, the electromagnetic heating plate is used to heat the photovoltaic module located above the electromagnetic heating plate, the pressing device is used to seal the photovoltaic module located above the electromagnetic heating plate to the electromagnetic heating plate to form a lamination cavity between the electromagnetic heating plate and the pressing device, the vacuum device is used to vacuum the lamination cavity, and the pressing device is also used to pressurize the photovoltaic module after the photovoltaic module is heated. The laminator provided in the embodiment of the present application implements the lamination process of the photovoltaic module by electromagnetic heating, which reduces the power consumption during the lamination process.
[0060] The above description of the present application is sufficiently detailed and has certain particularities. Those skilled in the art should understand that the description in the embodiments is merely exemplary, and all changes made without departing from the true spirit and scope of the present application should fall within the scope of protection of the present application. The scope of protection claimed in the present application is defined by the claims, not by the above description in the embodiments. Moreover, the embodiments mentioned in the present application are not limited to being implemented individually, and some embodiments can also be implemented in combination.
Claims
1. An electromagnetic heating plate for a photovoltaic module laminator, characterized in that: The electromagnetic heating plate comprises a heating plate body and at least one electromagnetic heating module arranged on the lower surface of the heating plate body; The electromagnetic heating module comprises at least two electromagnetic coils, and the electromagnetic coils are formed by winding metal wires along a spiral path from inside to outside or from outside to inside; After the electromagnetic coil is energized, the current directions of adjacent metal wires of the adjacent electromagnetic coils are the same, and the magnetic flux directions of two adjacent electromagnetic coils are opposite.
2. The electromagnetic heating plate according to claim 1, characterized in that: The electromagnetic coil is rectangular, and the at least two electromagnetic coils are arranged in an array.
3. The electromagnetic heating plate according to claim 1, characterized in that: At least two electromagnetic coils in the same electromagnetic heating module are formed by continuously winding a metal wire, and the two ends of the metal wire are used to connect the two poles of a power source.
4. The electromagnetic heating plate according to claim 1, characterized in that: For the adjacent ith electromagnetic coil and the i+1th electromagnetic coil formed by sequentially winding the metal wire, the winding path of the metal wire of the ith electromagnetic coil is from inside to outside, and the winding path of the metal wire of the i+1th electromagnetic coil is from outside to inside; Alternatively, the winding path of the metal wire of the i-th electromagnetic coil is from outside to inside, and the winding path of the metal wire of the (i+1)-th electromagnetic coil is from inside to outside.
5. The electromagnetic heating plate according to claim 1, characterized in that: The winding process of the three electromagnetic coils formed by continuous winding is as follows: The metal wire is wound from the first center point along a first spiral path from the inside to the outside to a first peripheral point to form a first electromagnetic coil consisting of a plurality of turns of the metal wire; The metal wire is wound from the first peripheral point along a second spiral path from the outside to the inside to the second center point to form a second electromagnetic coil consisting of a plurality of turns of metal wire; The metal wire wound around the second center point continues to the third center point and then winds from the inside to the outside to the second outer point to form a third electromagnetic coil consisting of a plurality of turns of metal wire.
6. The electromagnetic heating plate according to claim 1, characterized in that: The electromagnetic heating module further comprises a carrier plate, on which a plurality of spiral grooves arranged in an array are provided, and the metal wire is wound in the grooves to form the electromagnetic coil; The carrying plate is mounted on the lower surface of the hot plate body.
7. The electromagnetic heating plate according to claim 6, characterized in that: The carrying plate is an insulating plate or a metal plate, and the heating plate is a metal plate.
8. The electromagnetic heating plate according to claim 1, characterized in that: A winding area is provided on the lower surface of the heating plate body. A spiral wire groove is provided in the winding area. The metal wire is wound in the wire groove to form the electromagnetic coil.
9. The electromagnetic heating plate according to claim 1, characterized in that: The electromagnetic heating plate also includes a temperature sensor mounted within the heating plate body.
10. The electromagnetic heating plate according to claim 1, characterized in that: The electromagnetic coil is formed by at least two metal wires being wound in parallel, and / or the electromagnetic coil is wound with at least two turns.
11. A photovoltaic module laminating machine, characterized in that: The photovoltaic module laminating machine comprises the electromagnetic heating plate, conveyor belt, upper pressing device and vacuum device as described in any one of claims 1 to 10, the conveyor belt is sleeved on the outside of the electromagnetic heating plate, the conveyor belt is used to convey the photovoltaic module to the top of the electromagnetic heating plate, the electromagnetic heating plate is used to heat the photovoltaic module located above the electromagnetic heating plate, the upper pressing device is used to seal the photovoltaic module located above the electromagnetic heating plate to the electromagnetic heating plate to form a lamination cavity between the electromagnetic heating plate and the upper pressing device, the vacuum device is used to vacuum the lamination cavity, and the upper pressing device is also used to apply pressure to the photovoltaic module after the photovoltaic module is heated.