Hydrogen ionization mechanism and battery piece passivation device

Abstract

The utility model discloses a hydrogen ionization mechanism and a battery piece passivation device.The hydrogen ionization mechanism comprises a base, a positive electrode piece, a negative electrode piece and a conductive metal assembly, and the conductive metal assembly, the positive electrode piece and the negative electrode piece are all arranged on the base; the base is provided with an air inlet, an air conveying path and an air outlet which are sequentially connected, the air outlet is opposite to the conductive metal assembly, and the two ends of the conductive metal assembly are correspondingly and electrically connected with the positive electrode piece and the negative electrode piece respectively. According to the scheme, hydrogen ions are attached to the to-be-passivated surface of the battery piece in the related technology to migrate and effectively saturate dangling bonds on the to-be-passivated surface, so that the to-be-passivated surface can inhibit recombination of the to-be-passivated surface and current carriers, the current carriers are effectively converged to corresponding electrodes in the battery piece, and the passivation efficiency of the battery piece is improved. And therefore, a related device for depositing hydrogen ions on the surface of the battery piece is needed.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery piece passivation technical field especially relates to a hydrogen ionization mechanism and battery piece passivation device. BACKGROUND

[0002] For whole piece battery piece or half piece and many piece battery piece, its surface or section passivation is indispensable process, wherein, passivation process can make the section of battery piece deposit passivation layer, can improve photoelectric conversion efficiency.

[0003] In the related art, while forming the passivation layer, a proper amount of hydrogen ions are attached to the passivation surface of the battery piece. The hydrogen ions can migrate and effectively saturate the dangling bonds on the passivation surface, so that the passivation surface can inhibit the recombination of itself and the carriers, thereby ensuring that the carriers effectively converge on the corresponding electrode in the battery piece, to further improve the photoelectric conversion efficiency of the battery piece. Therefore, there is an urgent need for a related device for depositing hydrogen ions on the surface of the battery piece. SUMMARY

[0004] The utility model discloses a hydrogen ionization mechanism to solve the problem in the above background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: a hydrogen ionization mechanism, including base, positive electrode piece, negative electrode piece and conducting metal assembly, the conducting metal assembly, the positive electrode piece and the negative electrode piece all are located on the base, the base is opened with the gas inlet, the gas conveying path and the gas outlet that are connected in proper order, the gas outlet is opposite to the conducting metal assembly, and the both ends of the conducting metal assembly are correspondingly electrically connected with the positive electrode piece and the negative electrode piece.

[0006] Preferably, the base is provided with a groove, the conducting metal assembly is located in the groove, and the gas outlet is in communication with the groove.

[0007] Preferably, the conducting metal assembly includes a metal strip, a plurality of insulating supports and a shield, the shield is arranged on the base, the shield is provided with a first through hole, the first through hole is in communication with the gas outlet, a plurality of the insulating supports are arranged in the shield around the first through hole, the metal strip is wound and matched with the plurality of insulating supports, and the both ends of the metal strip are correspondingly electrically connected with the positive electrode piece and the negative electrode piece.

[0008] Preferably, the conducting metal assembly further includes two fixed strip clamps, the two fixed strip clamps are arranged in the shield at intervals, and the both ends of the metal strip are correspondingly fixedly connected with the two fixed strip clamps.

[0009] Preferably, the ionization area formed by the metal strip covers the gas outlet area formed by the first through hole in the through direction of the first through hole.

[0010] Preferably, the conductive metal assembly further comprises a high-temperature-resistant cover plate, the high-temperature-resistant cover plate is arranged on the shield, and the second through hole is arranged on the high-temperature-resistant cover plate.

[0011] Preferably, the metal strip is a nickel foil strip.

[0012] Preferably, the temperature detection member is arranged on the base.

[0013] The application further discloses a battery piece passivation device, which comprises a hoisting tool, a furnace body and the hydrogen ionization mechanism.

[0014] Preferably, the evaporation assembly is arranged in the passivation cavity.

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

[0016] In the hydrogen ionization mechanism, the conductive metal assembly, the positive electrode member and the negative electrode member are arranged on the base, the base is provided with an air inlet, a gas conveying path and an air outlet connected in sequence, the air outlet is arranged opposite to the conductive metal assembly, and the two ends of the conductive metal assembly are respectively electrically connected to the positive electrode member and the negative electrode member.

[0017] In the use process of the hydrogen ionization mechanism, the positive electrode member and the negative electrode member are electrified, the conductive metal assembly has current flowing therethrough, hydrogen enters from the air inlet, is output from the air outlet through the gas conveying path, and is catalytically cracked into hydrogen ions through the conductive metal assembly, so that the hydrogen ions can be attached to the surface of the battery piece to migrate and effectively saturate the dangling bonds on the surface of the battery piece.

[0018] The above structure passes current through the conductive metal assembly through the positive electrode member and the negative electrode member, and the hydrogen gas output from the air outlet of the base is ionized to form hydrogen ions, thereby facilitating the attachment of hydrogen atoms to the surface of the battery piece, migration and effective saturation of the dangling bonds, inhibition of the recombination of the hydrogen atoms and the carriers, effective convergence of the carriers to the corresponding electrodes in the battery piece, and further improvement of the photoelectric conversion efficiency of the battery piece. BRIEF DESCRIPTION OF DRAWINGS

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

[0020] Figure 1 Structure diagram of hydrogen ionization mechanism disclosed by the embodiments of the present application;

[0021] Figure 2 Top view of hydrogen ionization mechanism disclosed by the embodiments of the present application;

[0022] Figure 3 Bottom view of hydrogen ionization mechanism disclosed by the embodiments of the present application;

[0023] Figure 4 Partial sectional view of hydrogen ionization mechanism disclosed by the embodiments of the present application;

[0024] Figure 5 Sectional view of the battery piece passivation device disclosed by the embodiments of the present application.

[0025] In the figure: 100, base; 110, air inlet; 120, conveying gas path; 130, air outlet; 210, positive electrode piece; 220, negative electrode piece; 300, conductive metal assembly; 310, metal strip; 320, insulating support; 330, shield; 400, high-temperature-resistant cover plate; 500, furnace body; 600, evaporation assembly; 700, temperature detection piece; A, groove; B, second through hole; C, first through hole. DETAILED DESCRIPTION

[0026] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the related 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. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0027] It should be noted that when an element is referred to as "provided on" another element, it can be directly on the other element or there can be a middle element. When an element is referred to as "connected" to another element, it can be directly connected to the other element or there can be a middle element.

[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 this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application.

[0029] As shown in Figures 1 to 4 The hydrogen ionization mechanism disclosed in the present application includes a base 100, a positive electrode piece 210, a negative electrode piece 220 and a conductive metal assembly 300.

[0030] Specifically, the conductive metal assembly 300, the positive electrode piece 210 and the negative electrode piece 220 are all arranged on the base 100, the base 100 is provided with an air inlet 110, a gas conveying path 120 and an air outlet 130 connected in sequence, the air outlet 130 is arranged opposite to the conductive metal assembly 300, and the two ends of the conductive metal assembly 300 are respectively electrically connected to the positive electrode piece 210 and the negative electrode piece 220.

[0031] In the use process of the hydrogen ionization mechanism, the positive electrode piece 210 and the negative electrode piece 220 are both electrified, the conductive metal assembly 300 has current flowing through, hydrogen enters from the air inlet 110, passes through the gas conveying path 120 and is output from the air outlet 130, and the hydrogen is catalytically cracked into hydrogen ions by the conductive metal assembly 300, so that the hydrogen ions can be attached to the surface of the battery piece to migrate and effectively saturate the dangling bonds on the surface of the battery piece.

[0032] The above structure passes current through the conductive metal assembly 300 by the positive electrode piece 210 and the negative electrode piece 220, and the hydrogen gas output from the air outlet 130 of the base 100 is ionized to form hydrogen ions, thereby facilitating the attachment of hydrogen atoms to the surface of the battery piece, thereby migrating and effectively saturating the dangling bonds, thereby inhibiting the recombination of the hydrogen atoms and the carriers, ensuring that the carriers effectively converge to the corresponding electrode in the battery piece, and further improving the photoelectric conversion efficiency of the battery piece.

[0033] In an alternative scheme, the base 100 can be provided with a groove A, and specifically, the conductive metal assembly 300 is located in the groove A, the air outlet 130 communicates with the groove A, and the side wall of the groove A can provide a protection function for the electrical connection of the conductive metal assembly 300, the positive electrode piece 210 and the negative electrode piece 220, thereby avoiding the occurrence of electric leakage due to the accidental contact of other components with the conductive metal assembly 300.

[0034] In another alternative, the conductive metal assembly 300 can include the metal band 310, the plurality of insulating pillars 320, and the shroud 330. Specifically, the shroud 330 is arranged on the base 100, the shroud 330 is provided with the first through hole C, the first through hole C is in communication with the gas outlet 130, the plurality of insulating pillars 320 are arranged in the shroud 330 around the first through hole C, the metal band 310 is wound and matched with the plurality of insulating pillars 320, and the two ends of the metal band 310 are respectively electrically connected with the positive electrode piece 210 and the negative electrode piece 220. In the above structure, the shroud 330 not only provides a mounting basis for the insulating pillars 320, but also provides protection for the metal band 310 and the insulating pillars 320. The metal band 310 is wound and matched with the plurality of insulating pillars 320, so that the metal band 310 forms a plurality of bending bands above the gas outlet hole to increase the contact area with the hydrogen.

[0035] Of course, the conductive metal assembly 300 can be a U-shaped metal wire, a metal rod, etc., and the present application does not make any limitation thereto.

[0036] In further technical solutions, the conductive metal assembly 300 can further include two band clamps 340. Specifically, the two band clamps 340 are arranged in the shroud 330 at intervals, and the two ends of the metal band 310 are respectively fixedly connected with the two band clamps 340. The metal band 310 can be in a tight state with the plurality of insulating pillars 320 through the band clamps 340, so as to avoid the metal band 310 from being loose and falling off and miscontacting other components.

[0037] In further technical solutions, along the penetrating direction of the first through hole C, the ionization area formed by the metal band 310 can cover the gas outlet area formed by the first through hole C, so as to increase the contact of the hydrogen output by the gas outlet 130 with the metal band 310 and improve the production efficiency of hydrogen ions.

[0038] In still further technical solutions, the conductive metal assembly 300 can further include a high-temperature-resistant cover plate 400. The high-temperature-resistant cover plate 400 is arranged on the shroud 330. Since the temperature generated by the hydrogen cracking is high, the cover plate is beneficial to isolate heat and avoid damage to other components. The high-temperature-resistant cover plate 400 is provided with the second through hole B, and the hydrogen ions can move through the second through hole B.

[0039] In addition, the high-temperature-resistant cover plate 400 can be a glass cover plate, a stainless steel cover plate, etc., and the present application does not make any limitation thereto.

[0040] In the embodiments of the present application, the metal band 310 can be a nickel foil band. Nickel can be used as a catalyst for hydrogen ionization and cracking.

[0041] Of course, the metal band 310 can be a tungsten band, a molybdenum band, a platinum band, or a combined alloy band, etc., and the present application does not make any limitation thereto.

[0042] In the embodiment of the present application, the hydrogen ionization mechanism can further comprise a temperature detection member 700, specifically, the temperature detection member 700 is arranged on the base 100, the temperature detection member 700 is used for detecting the actual temperature of the hydrogen ionization mechanism, the temperature detection member 700 can be signal connected with the positive electrode member 210 and the negative electrode member 220, and in the case that the actual temperature meets the hydrogen cracking temperature, the positive electrode member 210 and the negative electrode member 220 will be in the energized state.

[0043] Of course, the temperature detection member 700 can be an expansion type thermometer, a thermal resistance thermometer, a thermocouple thermometer and the like, and the present application does not make any limitation thereto.

[0044] As shown in Figure 5 The present application further discloses a battery piece passivation device, the disclosed battery piece passivation device comprises a hoisting tool, a furnace body 500 and the above-mentioned hydrogen ionization mechanism, specifically, the furnace body 500 is provided with a passivation cavity, the hydrogen ionization mechanism is arranged in the passivation cavity, and at least one battery piece can be arranged in the hoisting tool, in the battery piece passivation process, the passivation surface of the battery piece is opposite to the gas outlet 130, so that the hydrogen ions formed by hydrogen cracking can be better attached to the passivation surface.

[0045] In the embodiment of the present application, the battery piece passivation device can further comprise an evaporation assembly 600, specifically, the evaporation assembly 600 is arranged in the passivation cavity, and the evaporation assembly 600 can output gaseous coating materials so as to deposit the gaseous coating materials on the passivation surface of the battery piece to form a passivation layer.

[0046] Of course, the evaporation assembly 600 can be a resistance heating member, an electron beam gun and the like, and the present application does not make any limitation thereto.

[0047] In the embodiment of the present application, the battery piece passivation device can further comprise a vacuum assembly and a heating rod, specifically, the vacuum assembly is arranged in the furnace body 500 and is communicated with the passivation cavity, and the heating member is used for heating the ambient temperature in the passivation cavity to ensure the passivation effect of the battery piece, which is a prior art and will not be described in detail herein.

[0048] 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 hydrogen ionization mechanism, characterized in that, The device includes a base (100), a positive electrode (210), a negative electrode (220), and a conductive metal assembly (300). The conductive metal assembly (300), the positive electrode (210), and the negative electrode (220) are all disposed on the base (100). The base (100) has an air inlet (110), an air delivery passage (120), and an air outlet (130) connected in sequence. The air outlet (130) is disposed opposite to the conductive metal assembly (300). The two ends of the conductive metal assembly (300) are electrically connected to the positive electrode (210) and the negative electrode (220), respectively.

2. The hydrogen ionization mechanism according to claim 1, characterized in that, The base (100) has a groove (A), the conductive metal component (300) is located in the groove (A), and the air outlet (130) is connected to the groove (A).

3. The hydrogen ionization mechanism according to claim 2, characterized in that, The conductive metal component (300) includes a metal strip (310), a plurality of insulating supports (320), and a protective cover (330). The protective cover (330) is disposed on the base (100). The protective cover (330) has a first through hole (C) that communicates with the air outlet (130). The plurality of insulating supports (320) are disposed around the first through hole (C) in the protective cover (330). The metal strip (310) is wound and engaged with the plurality of insulating supports (320). The two ends of the metal strip (310) are respectively electrically connected to the positive electrode (210) and the negative electrode (220).

4. The hydrogen ionization mechanism according to claim 3, characterized in that, The conductive metal component (300) also includes two strap clips (340), which are spaced apart in the cover (330). The two ends of the metal strip (310) are respectively fixedly connected to the two strap clips (340).

5. The hydrogen ionization mechanism according to claim 3, characterized in that, Along the penetrating direction of the first through hole (C), the ionization region formed by the metal strip (310) covers the gas outlet region formed by the first through hole (C).

6. The hydrogen ionization mechanism according to claim 3, characterized in that, The conductive metal component (300) also includes a high-temperature resistant cover plate (400), which is placed on the protective cover (330) and has a second through hole (B).

7. The hydrogen ionization mechanism according to claim 3, characterized in that, The metal strip (310) is a nickel foil strip.

8. The hydrogen ionization mechanism according to claim 1, characterized in that, It also includes a temperature detection element (700) disposed on the base (100).

9. A passivation device for battery cells, characterized in that, It includes a hoisting fixture, a furnace body (500), and a hydrogen ionization mechanism as described in any one of claims 1-8. The furnace body (500) has a passivation cavity, the hydrogen ionization mechanism is disposed in the passivation cavity, and at least one battery cell can be disposed in the hoisting fixture.

10. The cell passivation apparatus according to claim 9, characterized in that, It also includes a vapor deposition assembly (600) disposed in the passivation cavity.

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