Plating device and battery piece evaporation equipment

Abstract

The utility model discloses a coating device and battery piece evaporation equipment, the coating device comprises a base, a heating piece, a crucible and a hydrogen conveying pipeline, the heating piece comprises a first section, a second section and a third section which are connected in sequence, one end of the first section and one end of the third section are both connected with the base, the second section is provided with a containing cavity, and the crucible is arranged in the containing cavity. At least part of the crucible is arranged in the containing cavity, the gas outlet end of the hydrogen conveying pipeline is opposite to the heating piece, and the crucible is used for bearing passivation materials. According to the scheme, the problem that in the prior art, the aluminum oxide passivation layer and the hydrogen ions are deposited on the tangent plane of the cell slice, the photoelectric conversion efficiency of the cell slice can be improved, and therefore a passivation device for completing deposition of the passivation layer and the hydrogen ions on the tangent plane of the cell slice is needed urgently can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery piece passivation technical field especially relates to a plating device and battery piece evaporation plating equipment. BACKGROUND

[0002] For the whole piece, half piece or multi-piece battery piece, the surface passivation of the battery piece is an indispensable process, wherein the whole piece battery piece is cut by cutting technology, however, the cutting process causes the loss of the cutting surface of the battery piece, which leads to a large number of dangling bonds and defect states on the cutting surface of the battery piece, and further causes the recombination of charge carriers, which seriously reduces the photoelectric conversion efficiency of the photovoltaic module.

[0003] In the related art, the deposition of the aluminum oxide passivation layer on the cutting surface of the battery piece can improve the above-mentioned efficiency, the passivation layer has a high density of fixed negative charge to reduce the probability of carrier recombination at the cutting surface, thereby facilitating the improvement of the photoelectric conversion efficiency of the battery piece, while forming the aluminum oxide passivation layer, the passivation layer has a suitable amount of hydrogen ions, the hydrogen ions can effectively saturate the dangling bonds on the cutting surface by migration, and can inhibit the recombination of the hydrogen ions and the carriers, which is beneficial to ensure that the carriers are effectively gathered to the corresponding electrode in the battery piece, so as to further improve the photoelectric conversion efficiency of the battery piece, so a passivation device for depositing passivation layer and hydrogen ions on the cutting surface of the battery piece is needed. SUMMARY

[0004] The utility model discloses a plating device to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: a plating device, including base, heating piece, crucible and hydrogen gas delivery pipeline, the heating piece includes first section, second section and third section connected in turn, one end of the first section and one end of the third section are connected with the base, the second section is opened and is accommodated cavity, at least part of the crucible is located in the accommodating cavity, the gas outlet of hydrogen gas delivery pipeline is opposite to the heating piece, the crucible is used for containing passivation material.

[0006] Preferably, the second section is wound and wrapped at least part of the crucible, one end of the first section and one end of the third section are electrically connected with the base.

[0007] Preferably, in the direction of gravity, the second section and the gas outlet of hydrogen gas delivery pipeline are sequentially and spaced apart.

[0008] Preferably, the hydrogen delivery pipeline is provided with a heat preservation cover, the crucible and part of the second section are located in the inner cavity of the heat preservation cover, the outlet of the hydrogen delivery pipeline is communicated with the inner cavity of the heat preservation cover, and the opening of the heat preservation cover is consistent with the opening of the crucible.

[0009] Preferably, the base comprises two supports and two cooling members, one end of the first section and one end of the third section are connected to the two supports respectively, and the two cooling members are connected to the two supports respectively.

[0010] Preferably, the two supports are a positive electrode support and a negative electrode support respectively.

[0011] Preferably, the cooling member comprises a sealing joint, a water inlet pipe and a water outlet pipe, the sealing joint is connected to the support in a sealed manner, the water inlet pipe and the water outlet pipe are arranged on the sealing joint, the outlet end of the water inlet pipe extends into the cooling cavity, and the inlet end of the water outlet pipe is communicated with the cooling cavity.

[0012] Preferably, the crucible is a zirconia crucible.

[0013] Based on the above plating device, the application further discloses a battery piece evaporation plating device, which comprises a furnace body and the above plating device, the furnace body is provided with a passivation cavity, at least part of the hydrogen delivery pipeline and the base are arranged in the passivation cavity, and the heating member and the crucible are located in the passivation cavity.

[0014] Preferably, the temperature detection member is arranged on the furnace body, and the detection end of the temperature detection member extends into the passivation cavity.

[0015] The technical scheme adopted by the application can achieve the following beneficial effects:

[0016] In the plating device disclosed in the application, the heating member comprises a first section, a second section and a third section connected in sequence, one end of the first section and one end of the third section are connected to the base, the second section is provided with a containing cavity, at least part of the crucible is arranged in the containing cavity, the outlet end of the hydrogen delivery pipeline is opposite to the heating member, and the crucible is used for carrying the passivation material.

[0017] In the use of the plating device, the heating member is in a heating state, wherein the second section heats the passivation material in the crucible to form gaseous passivation material, so as to facilitate the plating of the cutting surface of the battery piece, so as to reduce the probability of carrier recombination at the cutting surface, thereby facilitating the improvement of the photoelectric conversion efficiency of the battery piece, meanwhile, the hydrogen gas delivery pipeline also outputs hydrogen gas, since the hydrogen gas delivery pipeline is opposite to the heating member, the hydrogen gas can be catalytically cracked by the heating member at high temperature to form hydrogen ions, the hydrogen ions can effectively saturate the dangling bonds on the cutting surface by migration, and can also inhibit the recombination of the hydrogen ions with the carriers, thereby facilitating the effective convergence of the carriers to the corresponding electrodes in the battery piece, so as to further improve the photoelectric conversion efficiency of the battery piece.

[0018] The above structure simultaneously performs evaporation and ionization on the passivation material carried in the crucible and the hydrogen gas output by the hydrogen gas output pipeline by the heating member, so as to realize the passivation of the cutting surface of the battery piece. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of the provided drawings.

[0020] Figure 1 The structure diagram of the plating device disclosed in the embodiments of the present application is shown in the drawings.

[0021] Figure 2 The front view of the plating device disclosed in the embodiments of the present application is shown in the drawings.

[0022] Figure 3 The cross-sectional view of the plating device disclosed in the embodiments of the present application under one angle is shown in the drawings.

[0023] Figure 4 The cross-sectional view of the plating device disclosed in the embodiments of the present application under another angle is shown in the drawings.

[0024] Figure 5 The partial cross-sectional view of the battery piece evaporation and plating device disclosed in the embodiments of the present application is shown in the drawings.

[0025] In the drawings: 110, support; 120, cooling member; 121, sealing joint; 122, water inlet pipe; 123, water outlet pipe; 200, heating member; 210, first section; 220, second section; 230, third section; 300, crucible; 400, hydrogen gas delivery pipeline; 500, heat preservation cover; 600, furnace body; A, cooling cavity; B, passivation cavity. DETAILED DESCRIPTION

[0026] For the purpose of facilitating the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be realized in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and fully convey the scope of the present application to those skilled in the art.

[0027] It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application.

[0029] As shown in Figures 1 to 4 The present application discloses a plating device, which comprises a base, a heating element 200, a crucible 300 and a hydrogen gas delivery pipeline 400.

[0030] Specifically, the heating element 200 comprises a first section 210, a second section 220 and a third section 230 connected in sequence, one end of the first section 210 and one end of the third section 230 are connected with the base, the second section 220 is provided with a receiving cavity, at least part of the crucible 300 is arranged in the receiving cavity, the outlet end of the hydrogen gas delivery pipeline 400 is opposite to the heating element 200, and the crucible 300 is used for containing passivation materials.

[0031] In the use process of the plating device, the heating element 200 is in a heating state, wherein the second section 220 heats the passivation materials in the crucible 300 to form gaseous passivation materials, thereby facilitating the plating of the cut surface of the battery piece, thereby reducing the probability of carrier recombination at the cut surface, thereby facilitating the improvement of the photoelectric conversion efficiency of the battery piece, at the same time, the outlet end of the hydrogen gas delivery pipeline 400 also outputs hydrogen gas, since the outlet end of the hydrogen gas delivery pipeline 400 is opposite to the heating element 200, the hydrogen gas can be catalytically cracked by the heating element 200 at high temperature to form hydrogen ions, the hydrogen ions can not only effectively saturate the dangling bonds on the cut surface through migration, but also inhibit the recombination of the hydrogen ions with the carriers, thereby facilitating the effective convergence of the carriers to the corresponding electrodes in the battery piece, so as to further improve the photoelectric conversion efficiency of the battery piece.

[0032] The structure realizes passivation of the cutting surface of the battery piece by simultaneously performing evaporation and ionization of the passivation material carried in the crucible 300 and the hydrogen gas output from the hydrogen gas output pipeline by the heating element 200.

[0033] The heating element 200 can be an electro-metallic strip, an electro-metallic wire, an electro-metallic disc, etc. The second section 220 is provided with a through hole forming an accommodation cavity in which the crucible 300 is located. In another alternative, the second section 220 is wound around and covers at least part of the crucible 300. One end of the first section 210 and one end of the third section 230 are electrically connected to the base. The base heats the crucible 300 by passing current through the electro-metallic wire. Meanwhile, the second section 220 increases the contact area with the crucible 300 by winding, thereby improving the efficiency of the passivation material forming gaseous passivation material.

[0034] Of course, the electro-metallic wire can be an electro-tungsten wire, an electro-nickel wire, an electro-titanium wire, an electro-tantalum wire, or an alloy wire composed of at least two of the above metals, etc., which can all be used as a catalyst in the hydrogen cracking reaction. The present application does not make any limitation in this regard.

[0035] In a further technical solution, the second section 220 and the gas outlet end of the hydrogen gas delivery pipeline 400 can be sequentially and spaced apart in the direction of gravity. The gas outlet end of the hydrogen gas output pipeline is opposite to the second section 220, so that the second section 220 can simultaneously complete the formation of gaseous passivation material from the passivation material and the ionization of hydrogen gas to form hydrogen ions by high-temperature catalytic cracking.

[0036] In the embodiment of the present application, the gas outlet end of the hydrogen gas delivery pipeline 400 can be provided with a heat preservation cover 500. Specifically, the crucible 300 and part of the second section 220 are located in the inner cavity of the heat preservation cover 500. The gas outlet of the gas outlet end of the hydrogen gas delivery pipeline 400 communicates with the inner cavity of the heat preservation cover 500. The opening of the heat preservation cover 500 faces the same direction as the opening of the crucible 300. Since the heating element 200 simultaneously completes the process of forming gaseous passivation material from the passivation material and ionizing hydrogen gas to form hydrogen ions by high-temperature catalytic cracking, heat radiation will be generated. The heat preservation cover 500 not only ensures that the temperature of the passivation material forming gaseous passivation material does not drop too quickly, but also avoids damage to other components caused by heat radiation.

[0037] In the embodiment of the present application, the base can include two supports 110 and two cooling elements 120. Specifically, one end of the first section 210 and one end of the third section 230 are respectively connected to the two supports 110 in correspondence. The two cooling elements 120 are respectively connected to the two supports 110 in correspondence. The support 110 is provided with a cooling cavity A. The cooling element 120 communicates with the cooling cavity A. The cooling element 120 can cool the heating element 200 by cooling the cooling cavity A.

[0038] In a further technical solution, the two supports 110 are a positive electrode support and a negative electrode support respectively.

[0039] Of course, the cooling member can be a forced air cooling member, and in an alternative solution, the cooling member 120 can include a sealing joint 121, a water inlet pipe 122 and a water outlet pipe 123, specifically, the sealing joint 121 is sealingly connected with the support 110, the water inlet pipe 122 and the water outlet pipe 123 are both arranged on the sealing joint 121, the water outlet end of the water inlet pipe 122 extends into the cooling cavity A, and the water inlet end of the water outlet pipe 123 communicates with the cooling cavity A. The above structure can continuously take away the temperature transferred from the heating member 200 to the support 110 through a water cooling circulation system, thereby avoiding overheat and damage of the heating member 200 and the support 110.

[0040] In the embodiment of the present application, the crucible 300 is a zirconium oxide crucible, which is high-temperature resistant and has a long service life due to the high temperature condition of evaporation and the high temperature required for heating the passivation material to form gaseous passivation material.

[0041] As shown in Figure 5 It is also disclosed a battery piece evaporation equipment, which includes a furnace body 600 and the above-mentioned coating device, specifically, the furnace body 600 is provided with a passivation cavity B, at least part of the hydrogen gas conveying pipeline 400 and the base are arranged in the passivation cavity B, and the heating member 200 and the crucible 300 are located in the passivation cavity B.

[0042] In the use process of the battery piece evaporation equipment, the battery piece fragments are located in the passivation cavity B, and are arranged in a spaced manner with the coating device along the gravity direction, the cutting surface of the battery piece fragments is opposite to the coating device, the gaseous passivation material and the hydrogen ions move linearly towards the battery piece fragments and are attached to the cutting surface of the battery piece fragments, thereby reducing the probability of carrier recombination at the cutting surface, and further facilitating the improvement of the photoelectric conversion efficiency of the battery piece fragments.

[0043] In the embodiment of the present application, the disclosed battery piece evaporation equipment can further include a temperature detection member, specifically, the temperature detection member is arranged on the furnace body 600, the detection end of the temperature detection member extends into the passivation cavity B, and the temperature detection member is used to detect whether the temperature in the passivation cavity B meets the passivation requirement of the cutting surface of the battery piece fragments.

[0044] Of course, the temperature detection member can be an expansion type thermometer, a thermal resistance thermometer and a thermocouple thermometer, etc., and the present application does not make any limitation in this regard.

[0045] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A plating device characterized by comprising: The device comprises a base, a heating element (200), a crucible (300) and a hydrogen delivery pipeline (400), the heating element (200) comprises a first section (210), a second section (220) and a third section (230) connected in sequence, one end of the first section (210) and one end of the third section (230) are connected with the base, the second section (220) is provided with a containing cavity, at least part of the crucible (300) is arranged in the containing cavity, the outlet end of the hydrogen delivery pipeline (400) is opposite to the heating element (200), the crucible (300) is used for containing passivation materials.

2. The plating apparatus according to claim 1, wherein The second section (220) is wound and wrapped around at least part of the crucible (300), one end of the first section (210) and one end of the third section (230) are electrically connected with the base.

3. The plating apparatus according to claim 2, wherein In the direction along the gravity, the second section (220) and the outlet end of the hydrogen delivery pipeline (400) are arranged in sequence and are spaced apart.

4. The plating apparatus according to claim 1, wherein The outlet end of the hydrogen delivery pipeline (400) is provided with a heat preservation cover (500), part of the crucible (300) and the second section (220) are located in the inner cavity of the heat preservation cover (500), the outlet of the outlet end of the hydrogen delivery pipeline (400) is communicated with the inner cavity of the heat preservation cover (500), and the opening of the heat preservation cover (500) is oriented in the same direction as the opening of the crucible (300).

5. The plating apparatus according to claim 1, wherein The base comprises two supports (110) and two cooling elements (120), one end of the first section (210) and one end of the third section (230) are connected with the two supports (110) correspondingly, the two cooling elements (120) are connected with the two supports (110) correspondingly, the support (110) is provided with a cooling cavity (A), and the cooling element (120) is communicated with the cooling cavity (A).

6. The plating apparatus according to claim 5, wherein The two supports (110) are positive electrode support and negative electrode support respectively.

7. The plating apparatus according to claim 5, wherein The cooling element (120) comprises a sealing joint (121), a water inlet pipe (122) and a water outlet pipe (123), the sealing joint (121) is sealingly connected with the support (110), the water inlet pipe (122) and the water outlet pipe (123) are arranged on the sealing joint (121), the water outlet end of the water inlet pipe (122) extends into the cooling cavity (A), and the water inlet end of the water outlet pipe (123) is communicated with the cooling cavity (A).

8. The plating apparatus according to claim 1, wherein The crucible (300) is a zirconium oxide crucible.

9. A battery plate evaporation apparatus, characterized by, The device comprises a furnace body (600) and the plating device according to any one of claims 1-8, the furnace body (600) is provided with a passivation cavity (B), at least part of the hydrogen delivery pipeline (400) and the base are arranged in the passivation cavity (B), and the heating element (200) and the crucible (300) are located in the passivation cavity (B).

10. The battery slice evaporation apparatus according to claim 9, characterized in that, Further comprising a temperature detection element, the temperature detection element is arranged on the furnace body (600), and a detection end of the temperature detection element extends into the passivation cavity (B).

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