A new type of stainless steel core double-sided PVT hybrid electric heating assembly

Abstract

The present application relates to a new type of stainless steel core double-sided PVT hybrid electric heating assembly, the new type of stainless steel core double-sided PVT hybrid electric heating assembly includes heat transfer inner core, the heat transfer inner core is packed with heat preservation frame around, the heat transfer inner core one side from inside to outside is sequentially provided with insulating layer, PV cell piece and transparent film, the battery piece group both sides are provided with first EVA adhesive film and second EVA adhesive film respectively, the heat transfer inner core other side is provided with the light transmission glass that can be detachably connected with the heat preservation frame, the light transmission glass and the heat transfer inner core between air layer is reserved, the PV cell piece is black silicon PERC cell, the battery has full spectrum operating characteristics, and after secondary annealing process, it has lower temperature attenuation coefficient, can work long-term under high temperature, the electric heating assembly structure is reasonable, and has the effect of high temperature resistance, in actual use, the electric heating radiation conversion rate of electric heating product is greatly strengthened, and it is suitable for promotion and use.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric heating components, and specifically relates to a novel stainless steel core double-sided PVT hybrid electric heating component. BACKGROUND

[0002] With the increasing improvement of the quality of modern life, daily household items gradually develop towards the trend of being easy to use and convenient, and the more convenient the product is, the more popular it is, especially in the field of household appliances. At present, the electric baking tray, electric heating furnace, warming cup and the like on the market all use a thin heating sheet as a heating source, and the use of such a structure can reduce the overall size of the electric appliance.

[0003] However, the electric heating radiation conversion rate of the existing electric heating product is not ideal in actual use, so that the use of the electric heating product cannot reach the ideal effect. SUMMARY

[0004] The present application aims to provide a novel stainless steel core double-sided PVT hybrid electric heating component to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions.

[0006] A novel stainless steel core double-sided PVT hybrid electric heating component, comprising a heat transfer inner core, and a heat preservation frame is packaged around the heat transfer inner core;

[0007] An insulating layer, a PV cell sheet and a transparent film are sequentially arranged from inside to outside on one side of the heat transfer inner core, and a first EVA adhesive film and a second EVA adhesive film are arranged on both sides of the cell sheet group, respectively.

[0008] A light-transmitting glass is arranged on the other side of the heat transfer inner core and detachably connected with the heat preservation frame, and an air layer is reserved between the light-transmitting glass and the heat transfer inner core.

[0009] As a further solution of the present application, the heat transfer inner core comprises an inner core arranged in a frame structure, the inner side of the inner core is divided into a plurality of heat storage intervals by a cross bar, and the heat storage intervals are filled with heat preservation materials.

[0010] First and second stainless steel sheets are fixed on both sides of the inner core to encapsulate the heat preservation materials.

[0011] As a further solution of the present application, the side of the two stainless steel sheets away from the inner core is sprayed with a heat-absorbing coating.

[0012] As a further further scheme of the present application: the inner core and the crossbar are hollow structure, and the inner core and the crossbar inside cavity communicate with each other.

[0013] As a further further scheme of the present application: the heat preservation frame includes a one side opening aluminum plastic frame, the aluminum plastic frame is provided with a slot for inserting the inner core on one side of the inner core, and the inner side of the slot is provided with a heat preservation material layer.

[0014] As a further further scheme of the present application: the air layer spacing is 2.0-2.5cm.

[0015] As a further further scheme of the present application: the PV cell is a black silicon PERC cell, and is composed of a plurality of cell groups.

[0016] As a further further scheme of the present application: the insulating layer is made of polyvinyl fluoride material.

[0017] Compared with the prior art, the present application has the beneficial effects that: the novel stainless steel core double-sided PVT hybrid electric heating assembly includes a heat transfer inner core, the heat transfer inner core is packaged with a heat preservation frame around, the heat transfer inner core is provided with an insulating layer, a PV cell and a transparent film from inside to outside on one side, the cell group is provided with a first EVA film and a second EVA film on both sides respectively, the heat transfer inner core is provided with a light transmission glass which is detachably connected with the heat preservation frame on the other side, the light transmission glass and the heat transfer inner core are reserved with an air layer, the PV cell is a black silicon PERC cell, the cell has full spectrum working characteristics, and after secondary annealing process, has a lower temperature attenuation coefficient, can work for a long time at high temperature, the electric heating assembly has a reasonable structure, and has a high temperature resistance effect, in actual use, greatly strengthens the electric heating radiation conversion rate of the electric heating product, and is suitable for popularization and use. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structure schematic view of the inner core in one embodiment of the novel stainless steel core double-sided PVT hybrid electric heating assembly.

[0019] Figure 2 It is a structure schematic view of the heat conduction inner core containing heat preservation material in one embodiment of the novel stainless steel core double-sided PVT hybrid electric heating assembly.

[0020] Figure 3 It is a structure schematic view of the stainless steel thin plate composite to the stainless steel heat conduction inner core in one embodiment of the novel stainless steel core double-sided PVT hybrid electric heating assembly.

[0021] Figure 4 It is a structure view of the heat conduction inner core after welding the stainless steel thin plate in one embodiment of the novel stainless steel core double-sided PVT hybrid electric heating assembly.

[0022] Figure 5 The structure diagram of the heat conduction inner core after welding the back side stainless steel sheet in one embodiment of the new type of stainless steel core double-sided PVT hybrid electric heating assembly.

[0023] Figure 6 The structure diagram of the back side part in one embodiment of the new type of stainless steel core double-sided PVT hybrid electric heating assembly.

[0024] Figure 7 The structure diagram of the back side part in one embodiment of the new type of stainless steel core double-sided PVT hybrid electric heating assembly.

[0025] Figure 8 The structure diagram of the back side part in one embodiment of the new type of stainless steel core double-sided PVT hybrid electric heating assembly.

[0026] In the figure, 1 is the inner core, 2 is the heat preservation material, 3 is the first stainless steel sheet, 4 is the second stainless steel sheet, 5 is the light-transmitting glass, 6 is the aluminum plastic frame, 7 is the heat preservation material layer, 8 is the transparent film, 9 is the first EVA adhesive film, 10 is the battery piece group, 11 is the second EVA adhesive film, and 12 is the insulation layer. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0028] In addition, the elements in the present application are referred to as "fixed to" or "provided on" another element, which can be directly on another element or can have a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or can have a middle element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation.

[0029] Please refer to Figures 1-8 In the embodiments of the present application, a new type of stainless steel core double-sided PVT hybrid electric heating assembly includes a heat transfer inner core, and the heat transfer inner core is packaged with a heat preservation frame around.

[0030] The heat transfer inner core has an insulation layer 12, PV battery pieces and a transparent film 8 arranged in sequence from inside to outside on one side, and the battery piece group has a first EVA adhesive film 9 and a second EVA adhesive film 11 arranged on both sides respectively.

[0031] The other side of the heat transfer inner core is provided with a light-transmitting glass 5 detachably connected with the heat preservation frame, and an air layer is reserved between the light-transmitting glass 5 and the heat transfer inner core.

[0032] Preferably, the light-transmitting glass 5 is high-transmittance solar special tempered glass, which effectively guarantees the corresponding conversion rate.

[0033] Further, the heat transfer inner core comprises an inner core 1 arranged in a frame structure, the inner side of the inner core 1 is divided into a plurality of heat storage intervals by a crossbar, and the heat storage intervals are filled with a heat preservation material 2.

[0034] The two sides of the inner core 1 are respectively fixed with a first stainless steel sheet 3 and a second stainless steel sheet 4 to encapsulate the heat preservation material 2.

[0035] The heat preservation material is a material with a heat transfer coefficient less than or equal to 0.12, mainly polystyrene foam plastic and polyurethane foam plastic. The heat preservation material can collect excess heat and release it in time, with small gradient change, effectively reducing the loss amount, and being safe and reliable, integrally bonded with the base, good in randomness, without cavity, avoiding negative wind pressure tearing and falling. It effectively overcomes the problems of falling of the outer warped deformation tiles at the joint after splicing, etc. The raw materials such as floating beads and brucite fiber (tubular fiber) are selected, a closed hydrophobic micropore cavity structure is formed in the structure, serving as a phase change material carrier, which can ensure long-term practicability of the phase change material.

[0036] The two stainless steel sheets are sprayed with a heat-absorbing coating on the side away from the inner core 1.

[0037] The inner core 1 and the crossbar are both arranged in a hollow structure, and the cavities in the inner core 1 and the crossbar are in communication.

[0038] The inner core 1 and the crossbar 1 are integrally arranged.

[0039] In detail, the heat preservation frame comprises an aluminum-plastic frame 6 with one side open, the aluminum-plastic frame 6 is provided on the side facing the inner core 1 with a slot for inserting the inner core 1, and the inner side of the slot is provided with a heat preservation material layer 7.

[0040] The aluminum-plastic frame 6 is processed from an aluminum-plastic composite board, which is a composite material processed from a special aluminum-plastic board production equipment with a chemically treated coated aluminum plate as a surface layer material and polyethylene plastic as a core material. The unique properties of the aluminum-plastic composite board determine its wide application: it can be used for building exterior walls, curtain wall boards, old building renovation, indoor wall and ceiling decoration, advertising signs, display racks, and dust purification engineering. The aluminum-plastic composite board has been widely used in China and is a new type of building decoration material.

[0041] Further, the heat preservation material layer 7 is compounded on the inner wall of the slot, the slot is provided with a clamping part, and the inner core 1 is fixedly connected with the slot.

[0042] The interval of the air layer is 2.0-3.0 cm.

[0043] Preferably, the interval of the air layer is 2.5 cm.

[0044] The PV cell piece is a black silicon PERC cell, and is composed of a plurality of cell piece groups 10.

[0045] The insulation layer 12 is made of polyvinyl fluoride material.

[0046] It should be noted that polyvinyl fluoride is a white powder partially crystalline polymer. The melting point is 190-200℃, the decomposition temperature is above 210℃, and the long-term use temperature is -100-150℃. PVF is a fluorine-containing homopolymer, and the molecular weight is 60-180 thousand. It is the fluorine-containing plastic with the lowest fluorine content, the smallest specific gravity, and the cheapest price;

[0047] It has good flex resistance and is not easy to crack when repeatedly folded. The polyvinyl fluoride film can resist the erosion of oil, organic solvents, alkalis, acids and salt mist, has good electrical insulation performance, and also has good low temperature performance, wear resistance and gas barrier property.

[0048] As described above, the black silicon PERC cell has full-spectrum working characteristics, especially in the infrared light wave band. The black silicon photovoltaic cell has a low temperature attenuation coefficient after secondary annealing process, and can work for a long time at high temperature.

[0049] It should be further pointed out that the black silicon PERC cell has high conversion efficiency and relatively low cost, and can be put into industrial production, so it is paid more and more attention by the battery field technical personnel. In addition, due to the introduction of diamond wire cutting silicon wafer, the production cost of black silicon solar cell which can greatly improve the photoelectric conversion efficiency is greatly reduced.

[0050] The electric heating assembly has reasonable structure and high temperature resistance effect, and greatly improves the electric heating radiation conversion rate of the electric heating product in actual use, and is suitable for popularization and use.

[0051] It should be noted that the materials (i.e. the first EVA adhesive film 9, the cell piece group 10, the second EVA adhesive film 11 and the insulation layer 12) between the transparent film 8 at the uppermost layer and the inner core 1 are packaged by laminating process.

[0052] Laminating process is a relatively important link in photovoltaic module production, in which the cross-linking and curing of EVA adhesive film is realized, which directly affects the packaging quality of the module. At present, the instrument for realizing laminating process in this industry is laminating machine;

[0053] In addition, the process of combining the first stainless steel sheet 3 and the second 4 stainless steel sheet to the inner core 1 is laser welding, which is a high-efficiency precision welding method using a high-energy-density laser beam as a heat source.

[0054] In detail, EVA is a copolymer of ethylene and acetic acid, and its chemical name is ethylene-vinyl acetate copolymer (ethylene-vinyl acetate copolymer). EVA can be injection molded, extruded, blow molded, calendered, roll molded vacuum heat formed, foamed, coated, heat sealed, welded and other molding processes. The application field of EVA is quite wide, and the annual market consumption is increasing. EVA is applied to the sole and interior decoration material of high-grade tourist shoes, hiking shoes, slippers and sandals in the shoe industry. EVA has the characteristics of good softness, rubber-like elasticity, good flexibility at-50℃, transparency and surface gloss, good chemical stability, good aging resistance and ozone resistance, and no toxicity. The mixing property with fillers, coloring property and molding processability are good. The polarity of acetate increases the elasticity and viscosity, and reduces the crystallinity and electrical properties. It is soluble in hydrocarbons and oils;

[0055] In the field of new energy, there are also wide applications, such as photovoltaic materials and solar cell adhesives, which are one of the rapidly developing polymer material varieties in recent years, and have good impact resistance, flexibility, low temperature resistance, environmental stress cracking resistance and other properties.

[0056] It is apparent to those skilled in the art that the application is not limited to the details of the foregoing exemplary embodiments, and that the application can be implemented in other particular forms without departing from the spirit or essential characteristics of the application. Therefore, the embodiments should be considered as exemplary and not restrictive, and the scope of the application is defined by the appended claims rather than the above description, and all changes falling within the meaning and range of equivalents of the essential elements of the claims are intended to be encompassed by the application. Any reference signs in the claims should not be considered as limiting the claims involved.

[0057] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A stainless steel cored double-sided PVT hybrid electrocaloric assembly, characterized in that, The stainless steel core double-sided PVT hybrid electric heating assembly comprises a heat transfer inner core, and the heat transfer inner core is surrounded by a heat preservation frame; One side of the heat transfer inner core is sequentially provided from inside to outside with an insulation layer (12), PV cell pieces and a transparent film (8), the PV cell pieces are black silicon PERC cells and are composed of a plurality of cell piece groups (10); the cell piece groups are respectively provided with first EVA adhesive films (9) and second EVA adhesive films (11) on two sides; The other side of the heat transfer inner core is provided with light transmission glass (5) which is detachably connected with the heat preservation frame, and an air layer is reserved between the light transmission glass (5) and the heat transfer inner core; The heat transfer inner core comprises an inner core (1) provided in a frame structure, the inner side of the inner core (1) is divided into a plurality of heat storage intervals by a cross bar, and the heat storage intervals are filled with heat preservation materials (2); The two sides of the inner core (1) are respectively fixed with first stainless steel thin plates (3) and second stainless steel thin plates (4) to encapsulate the heat preservation materials (2); The two stainless steel thin plates are sprayed with heat absorption coating on the side away from the inner core (1); The inner core (1) and the cross bar are both provided in a hollow structure, and the inner core (1) and the hollow cavities in the inner side of the cross bar are in communication with each other; The air layer has a spacing of 2.0-2.5cm; The insulation layer (12) is made of polyvinyl fluoride material.

2. A double-sided PVT hybrid electrocaloric assembly with a stainless steel core according to claim 1, characterized in that, The heat preservation frame comprises an aluminum plastic frame (6) with one side open, the aluminum plastic frame (6) is provided on the side facing the inner core (1) with a slot for inserting the inner core (1), and the inner side of the slot is provided with a heat preservation material layer (7).

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