A battery piece edge passivation device

Abstract

The utility model provides a kind of battery piece edge passivation device, including cavity, inside having bearing platform, the bearing platform is used to load the carrier of battery piece installation;First gas supply component, be located in the cavity, and located the side of the bearing platform, for the edge of the battery piece release process gas;Second gas supply component, be located in the cavity, and located the other side of the bearing platform, and with the first gas supply component opposite setting, for the edge of the battery piece release process gas.The utility model provides a kind of battery piece edge passivation device by setting first gas supply component and second gas supply component in the both sides of bearing platform, can simultaneously carry out passivation treatment to the cutting edge of the both sides edge of battery piece, to improve the efficiency of battery piece cutting edge passivation treatment.

Description

Technical Field

[0001] This utility model relates to the field of solar cell technology, and in particular to a cell edge passivation device. Background Technology

[0002] A solar cell is a thin film of photovoltaic semiconductors that directly generates electricity using sunlight. Also known as a "solar chip" or "photovoltaic cell," it can instantly output voltage and generate current when a circuit is established, provided it receives sufficient illumination. In physics, this is called solar photovoltaic (PV), or simply photovoltaic.

[0003] Currently, to reduce resistance loss after solar cells are connected in series and to increase the power output of the resulting modules, the entire cell is often cut into two (half) or smaller units (e.g., three or four). This effectively shortens the current transmission path, reduces series resistance, and increases module power output. However, after the cells are cut, the edges need to be passivated. Existing edge passivation devices can only passivate one side. When both sides of the cell are cut edges that need passivation, they cannot be passivated simultaneously, resulting in low passivation efficiency and thus reducing production efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a battery cell edge passivation device, which improves the efficiency of passivation of battery cell edges and increases production capacity.

[0005] To achieve the above objectives, in a first aspect, the present invention provides a battery cell edge passivation device, comprising:

[0006] The cavity has an internal support platform for supporting a carrier on which the battery cells are installed.

[0007] The first gas supply component is disposed in the cavity and located on one side of the support platform, for releasing process gas toward the edge of the battery cell;

[0008] The second gas supply component is disposed in the cavity and located on the other side of the support platform, and is disposed opposite to the first gas supply component, for releasing process gas toward the edge of the battery cell.

[0009] The beneficial effect of the battery cell edge passivation device provided by this utility model is that by setting a first air supply component and a second air supply component on both sides of the support platform, the cut edges on both sides of the battery cell can be passivated at the same time, thereby improving the efficiency of the passivation treatment of the cut edges of the battery cell.

[0010] In some embodiments, the first gas supply assembly includes a first mounting plate and a plurality of gas supply components;

[0011] The first mounting plate is disposed on one side of the support platform and extends along the extension direction of the support platform;

[0012] Several of the gas supply components are arranged sequentially at intervals on the side of the first mounting plate near the support platform, for releasing process gas toward the support platform.

[0013] In some embodiments, the second gas supply assembly includes a second mounting plate and a plurality of the gas supply components;

[0014] The second mounting plate is located on the other side of the support platform and extends along the extension direction of the support platform;

[0015] Several of the gas supply components are arranged sequentially at intervals on the side of the second mounting plate near the support platform, for releasing process gas toward the support platform.

[0016] In some embodiments, the gas supply unit includes a first sub-gas supply unit for supplying a first process gas and a second sub-gas supply unit for supplying a second process gas;

[0017] Both the first mounting plate and the second mounting plate are provided with a plurality of first sub-air supply components and a plurality of second sub-air supply components, and the plurality of first sub-air supply components and the plurality of second sub-air supply components are arranged alternately and intermittently.

[0018] In some embodiments, the cell edge passivation device further includes a first driving member and a second driving member;

[0019] The first driving component is connected to the first air supply assembly and is used to drive the first air supply assembly to move closer to or away from the support platform;

[0020] The second driving component is connected to the second air supply assembly and is used to drive the second air supply assembly to move closer to or away from the support platform;

[0021] When it is necessary to form a passivation layer at the edge of the cell by atomic layer deposition, the first driving member drives the first gas supply assembly to approach the support platform, and / or the second driving member drives the second gas supply assembly to approach the support platform, so that the first process gas released by the first sub-gas supply assembly and the second process gas released by the second sub-gas supply assembly do not come into contact.

[0022] When a passivation layer needs to be formed at the edge of the cell by chemical vapor deposition, the first drive unit drives the first gas supply assembly away from the support platform, and / or the second drive unit drives the second gas supply assembly away from the support platform, so that the first process gas released by the first sub-gas supply unit and the second process gas released by the second sub-gas supply unit come into contact.

[0023] In some embodiments, the cell edge passivation device further includes a controller, a first flow control valve, a second flow control valve, a first gas supply pipe, and a second gas supply pipe;

[0024] One end of the first gas supply pipe is connected to the first sub-gas supply component, and is used to deliver the first process gas into the cavity;

[0025] The first flow control valve is located in the first gas supply pipeline;

[0026] One end of the second gas supply pipe is connected to the second sub-gas supply component, and is used to deliver the second process gas into the cavity;

[0027] The second flow control valve is located in the second gas supply pipeline;

[0028] The controller is electrically connected to the first flow control valve and the second flow control valve.

[0029] In some embodiments, the cell edge passivation device further includes a heating tube disposed on the first mounting plate and the second mounting plate;

[0030] The heating tubes are positioned close to the gas supply components and surround the periphery of each gas supply component.

[0031] In some embodiments, the first gas supply component and the second gas supply component cooperate to form a gas supply system;

[0032] The cavity contains at least one of the aforementioned gas supply systems.

[0033] In some embodiments, the cavity is provided with exhaust ports, which are located on both sides of the gas supply system. The advantage is that by providing exhaust ports on both sides near the gas supply system, excess process gas can be extracted from the cavity, preventing airflow disturbances inside the cavity during the passivation treatment of the battery cell edges, thereby improving the passivation effect on the battery cell edges.

[0034] In some embodiments, the cell edge passivation device further includes a plurality of rotating rollers, which are rotatably disposed within the cavity and cooperate with each other to form the support platform. Attached Figure Description

[0035] Figure 1 A perspective view of the battery cell edge passivation device provided in the embodiments of this utility model;

[0036] Figure 2 A top view of the battery cell edge passivation device provided in the embodiment of this utility model;

[0037] Figure 3 A side view of the battery cell edge passivation device provided in the embodiment of this utility model;

[0038] Figure 4 Schematic diagrams of the structure of the first mounting plate and the second mounting plate provided in the embodiments of this utility model;

[0039] Figure 5 This is a schematic diagram of the structure of the first gas supply component in the embodiment of this utility model.

[0040] Figure label:

[0041] Cavity 1, exhaust port 11, valve 12, rotating roller 2, bearing platform 21, air supply system 3, first air supply component 31, first mounting plate 311, first air guide hole 312, second air supply component 32, second mounting plate 321, second air guide hole 322, air supply component 33, air supply cover 34, conveying body 4, first air supply pipe 41, second air supply pipe 42, heating pipe 5, first driving component 6, second driving component 7. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Unless otherwise defined, the technical or scientific terms used herein should have the ordinary meaning understood by those skilled in the art to which this utility model pertains. The terms "comprising" and similar expressions used herein mean that the element or object preceding the word covers the element or object listed following the word and its equivalents, but does not exclude other elements or objects.

[0043] Figure 1 A perspective view of the battery cell edge passivation device provided in the embodiments of this utility model; Figure 2 A top view of the battery cell edge passivation device provided in the embodiment of this utility model; Figure 3 This is a side view of the battery cell edge passivation device according to an embodiment of the present invention. It should be noted that, for ease of observation of the internal structure of the battery cell edge passivation device, Figure 1 and Figure 2 The top plate of the cavity is hidden. Figure 3 The side walls of the cavity are hidden.

[0044] refer to Figures 1 to 3As shown, this embodiment of the invention provides a battery cell edge passivation device, including a cavity 1. The cavity 1 has a support platform 21 inside, which supports a carrier on which battery cells are mounted. The carrier clamps several battery cells and exposes the cut edges of the battery cells. A first gas supply component 31 is disposed within the cavity 1 and located on one side of the support platform 21, for releasing process gas toward the edge of the battery cells. A second gas supply component 32 is disposed within the cavity 1 and located on the other side of the support platform 21, opposite to the first gas supply component 31, for releasing process gas toward the edge of the battery cells.

[0045] In this embodiment, the first air supply component 31 and the second air supply component 32 are independently controlled. By setting the first air supply component 31 and the second air supply component 32 on both sides of the support platform 21, the cut edges on both sides of the battery cell can be passivated simultaneously, thereby improving the efficiency of the passivation process. It is understood that when only one side of the battery cell needs to be passivated, the first air supply component 31 or the second air supply component 32 corresponding to that side of the battery cell can be turned on.

[0046] In some embodiments, the first gas supply component 31 and the second gas supply component 32 cooperate to form a gas supply system 3, and at least one gas supply system 3 is provided in the cavity 1.

[0047] In this embodiment, there are two gas supply systems 3, which are arranged alternately in the cavity 1. Each gas supply system 3 is controlled independently to further improve the efficiency of passivation treatment of the battery cells.

[0048] In some embodiments, depending on actual needs, 3, 5 or 6 of the gas supply systems 3 may be provided in the cavity 1.

[0049] refer to Figures 1 to 3 As shown, in some embodiments, an exhaust port 11 is provided at the bottom of the cavity 1, and the exhaust port 11 is located on both sides of the air supply system 3.

[0050] In this embodiment, each side of the gas supply system 3 is provided with at least two exhaust holes 11. Specifically, at least two exhaust holes 11 are spaced apart along the extension direction of the first mounting plate 311, and at least two exhaust holes 11 are spaced apart along the extension direction of the second mounting plate 321. By providing the exhaust holes 11, the airflow in the cavity 1 is prevented from becoming chaotic after the first gas supply component 31 and the second gas supply component 32 are turned on, and excess process gas is promptly removed, thereby ensuring the passivation effect on the edge of the battery cell.

[0051] refer to Figures 1 to 4 As shown, in some embodiments, the first gas supply assembly 31 includes a first mounting plate 311 and a plurality of gas supply components 33. The first mounting plate 311 is disposed on one side of the support platform 21 and extends along the extension direction of the support platform 21. The plurality of gas supply components 33 are disposed sequentially at intervals on the side of the first mounting plate 311 near the support platform 21 for releasing process gas toward the support platform 21.

[0052] Furthermore, the first mounting plate 311 is provided with a plurality of spaced first air guide holes 312, the first air guide holes 312 being close to the side wall of the air supply component 33, and the first air guide holes 312 guiding the first mounting plate 311.

[0053] In this embodiment, on the first mounting plate 311, each of the gas supply components 33 has a first air guide hole 312 near its opposite side walls. The first air guide hole 312 is an elongated hole structure that extends along the length of the gas supply component 33. By opening a plurality of first air guide holes 312 on the first mounting plate 311, when the exhaust port 11 is activated by the pump for suction operation, excess process gas on the support platform 21 flows toward the exhaust port 11 through the first air guide holes 312 and is eventually drawn out of the cavity 1. Most importantly, since each of the gas supply components 33 has a first air guide hole 312 near its opposite side walls, when two adjacent gas supply components 33 release process gas, the possibility of confusion during the flow of process gas is reduced.

[0054] In some embodiments, the second gas supply assembly 32 includes a second mounting plate 321 and a plurality of gas supply components 33. The second mounting plate 321 is disposed on the other side of the support platform 21 and extends along the extending direction of the support platform 21. The plurality of gas supply components 33 are disposed sequentially at intervals on the side of the second mounting plate 321 near the support platform 21, for releasing process gas toward the support platform 21.

[0055] Furthermore, the second mounting plate 321 is provided with a plurality of second air guide holes 322, the second air guide holes 322 are close to the side wall of the air supply component 33, and the second air guide holes 322 conduct the second mounting plate 321.

[0056] In this embodiment, on the second mounting plate 321, a second air guide hole 322 is provided near each of the opposite side walls of the gas supply component 33. The second air guide hole 322 is an elongated hole structure and extends along the length of the gas supply component 33. By providing several second air guide holes 322 on the second mounting plate 321, when the exhaust port 11 is activated by the pump for suction, excess process gas on the support platform 21 flows towards the exhaust port 11 through the second air guide holes 322 and is eventually extracted from the cavity 1. Most importantly, since a second air guide hole 322 is provided near each of the opposite side walls of the gas supply component 33, the occurrence of chaos in the process gas flow is further reduced when two adjacent gas supply components 33 release process gas.

[0057] refer to Figures 1 to 5 As shown, in some embodiments, the gas supply system 3 further includes a plurality of gas supply covers 34, each gas supply cover 34 corresponding to one gas supply component 33, for covering the gas supply component 33. The first air guide hole 312 located on the first mounting plate 311 and the second air guide hole 322 located on the second mounting plate 321 are both located between the inner wall of the gas supply cover 34 and the outer wall of the gas supply component 33.

[0058] In this embodiment, a plurality of gas supply hoods 34 are provided on the first mounting plate 311 and the second mounting plate 321 to further control the flow direction of the process gas, so as to better control the process gas.

[0059] In some embodiments, the gas supply component 33 includes a first sub-gas supply component for supplying a first process gas and a second sub-gas supply component for supplying a second process gas. Both the first mounting plate 311 and the second mounting plate 321 are provided with a plurality of first sub-gas supply components and a plurality of second sub-gas supply components, which are arranged in a staggered and alternating manner.

[0060] In this embodiment, the first process gas supplied by the first sub-gas supply unit can be an aluminum source, and the second process gas supplied by the second sub-gas supply unit can be water or ozone. Furthermore, the distance between the first sub-gas supply unit and the adjacent second sub-gas supply unit needs to be specifically set so that the first and second process gases do not mix when they come into contact with the edge of the solar cell, thereby achieving passivation treatment at the edge of the solar cell using atomic layer deposition.

[0061] Furthermore, in some embodiments, the cell edge passivation device further includes a first driving member 6 and a second driving member 7. The first driving member 6 is connected to the first air supply assembly 31 and is used to drive the first air supply assembly 31 closer to or further away from the support platform 21. The second driving member 7 is connected to the second air supply assembly 32 and is used to drive the second air supply assembly 32 closer to or further away from the support platform 21.

[0062] In this embodiment, by setting the first driving member 6 and the second driving member 7, the method of passivating the edge of the battery cell can be switched, thereby improving the applicability of the battery cell edge passivation device.

[0063] For example, when a passivation layer needs to be formed at the edge of the battery cell by atomic layer deposition, the first driving member 6 drives the first gas supply assembly 31 to approach the support platform 21, and / or the second driving member 7 drives the second gas supply assembly 32 to approach the support platform 21, so that the first process gas released by the first sub-gas supply assembly and the second process gas released by the second sub-gas supply assembly do not come into contact with each other before they come into contact with the edge of the battery cell.

[0064] When a passivation layer needs to be formed at the edge of the battery cell by chemical vapor deposition, the first drive member 6 drives the first gas supply assembly 31 away from the support platform 21, and / or the second drive member 7 drives the second gas supply assembly 32 away from the support platform 21, so that the first process gas released by the first sub-gas supply member and the second process gas released by the second sub-gas supply member can come into contact and mix before contacting the edge of the battery cell.

[0065] It should be noted that when a passivation layer needs to be formed at the edge of the battery cell by chemical vapor deposition, the first driving member 6 and the second driving member 7 respectively control the first gas supply component 31 and the second gas supply component 32 to a specific position so that the first process gas released by the first sub-gas supply component and the second process gas released by the second sub-gas supply component come into contact and react within 0-5 mm of the edge of the battery cell, thereby improving the reliability of the passivation treatment at the edge of the battery cell by chemical vapor deposition.

[0066] It is understood that in this embodiment, in order to facilitate the distinction between two adjacent gas supply components 33, one of which is used to release the first process gas and the other to release the second process gas, one of them is defined as the first sub-gas supply component and the other is defined as the second sub-gas supply component.

[0067] In some embodiments, the cell edge passivation device further includes a controller, a first flow control valve, a second flow control valve, a first gas supply pipe 41, and a second gas supply pipe 42. One end of the first gas supply pipe 41 is connected to the first sub-gas supply component, and the other end is connected to an external gas source, for delivering a first process gas into the cavity 1. The first flow control valve is located in the first gas supply pipe 41 and is used to control the gas flow rate within the first gas supply pipe 41. One end of the second gas supply pipe 42 is connected to the second sub-gas supply component, and the other end is connected to an external gas source, for delivering a second process gas into the cavity 1. The second flow control valve is located in the second gas supply pipe 42 and is used to control the gas flow rate within the second gas supply pipe 42. The controller is electrically connected to the first flow control valve and the second flow control valve.

[0068] In this embodiment, the first gas supply pipe 41 and the second gas supply pipe 42 are two independent channels opened on the conveying body 4, and the conveying body 4 is a long bar structure.

[0069] In some embodiments, the cell edge passivation device further includes heating pipes 5 disposed on the first mounting plate 311 and the second mounting plate 321. The heating pipes 5 are disposed close to the gas supply members and surround the periphery of each gas supply member.

[0070] In this embodiment, the heating tube 5 can be a heating wire. The heating tube 5 can heat the temperature inside the cavity 1 to 120-300°C. Since the heating tube 5 surrounds each gas supply component, the uniformity of the heating temperature is ensured.

[0071] In some embodiments, the cell edge passivation device further includes a plurality of rotating rollers 2, which are rotatably disposed within the cavity 1 and cooperate with each other to form the support platform 21.

[0072] In this embodiment, valves 12 are provided on both opposite side walls of the cavity 1 for opening or closing the cavity 1. When performing edge passivation treatment of the battery cells, one of the valves 12 is opened first to place the carrier holding the battery cells onto the support platform 21 inside the cavity 1. Then, valve 12 is closed, and the air supply system 3 is activated to perform the edge passivation process on the battery cells. During the process, the support platform 21 rotates to move the carrier to the other valve 12, at which point the passivation process is completed. Then, the other valve 12 is opened, and the carrier is removed.

[0073] Although the embodiments of this utility model have been described in detail above, it will be apparent to those skilled in the art that various modifications and variations can be made to these embodiments. However, it should be understood that such modifications and variations fall within the scope and spirit of this utility model. Moreover, the utility model described herein may have other embodiments and can be implemented or realized in various ways.

Claims

1. A battery cell edge passivation device, characterized in that, include: The cavity has an internal support platform for supporting a carrier on which the battery cells are installed. The first gas supply component is disposed in the cavity and located on one side of the support platform, for releasing process gas toward the edge of the battery cell; The second gas supply component is disposed in the cavity and located on the other side of the support platform, and is disposed opposite to the first gas supply component, for releasing process gas toward the edge of the battery cell; It also includes a first drive component and a second drive component; The first driving component is connected to the first air supply assembly and is used to drive the first air supply assembly to move closer to or away from the support platform; The second driving component is connected to the second air supply assembly and is used to drive the second air supply assembly to move closer to or away from the support platform; The first gas supply component and the second gas supply component each include a first sub-gas supply component and a second sub-gas supply component; When it is necessary to form a passivation layer at the edge of the cell by atomic layer deposition, the first driving member drives the first gas supply assembly to approach the support platform, and / or the second driving member drives the second gas supply assembly to approach the support platform, so that the first process gas released by the first sub-gas supply assembly and the second process gas released by the second sub-gas supply assembly do not come into contact. When a passivation layer needs to be formed at the edge of the cell by chemical vapor deposition, the first drive unit drives the first gas supply assembly away from the support platform, and / or the second drive unit drives the second gas supply assembly away from the support platform, so that the first process gas released by the first sub-gas supply unit and the second process gas released by the second sub-gas supply unit come into contact.

2. The cell edge passivation device according to claim 1, characterized in that, The first gas supply assembly includes a first mounting plate and several gas supply components; The first mounting plate is disposed on one side of the support platform and extends along the extension direction of the support platform; Several of the gas supply components are arranged sequentially at intervals on the side of the first mounting plate near the support platform, for releasing process gas toward the support platform.

3. The cell edge passivation device according to claim 2, characterized in that, The second gas supply assembly includes a second mounting plate and a plurality of the aforementioned gas supply components; The second mounting plate is located on the other side of the support platform and extends along the extension direction of the support platform; Several of the gas supply components are arranged sequentially at intervals on the side of the second mounting plate near the support platform, for releasing process gas toward the support platform.

4. The cell edge passivation device according to claim 3, characterized in that, The gas supply unit includes a first sub-gas supply unit for supplying a first process gas and a second sub-gas supply unit for supplying a second process gas; Both the first mounting plate and the second mounting plate are provided with a plurality of first sub-air supply components and a plurality of second sub-air supply components, and the plurality of first sub-air supply components and the plurality of second sub-air supply components are arranged alternately and intermittently.

5. The cell edge passivation device according to claim 4, characterized in that, It also includes a controller, a first flow control valve, a second flow control valve, a first gas supply pipeline, and a second gas supply pipeline; One end of the first gas supply pipe is connected to the first sub-gas supply component, and is used to deliver the first process gas into the cavity; The first flow control valve is located in the first gas supply pipeline; One end of the second gas supply pipe is connected to the second sub-gas supply component, and is used to deliver the second process gas into the cavity; The second flow control valve is located in the second gas supply pipeline; The controller is electrically connected to the first flow control valve and the second flow control valve.

6. The cell edge passivation device according to claim 3, characterized in that, It also includes heating tubes disposed on the first mounting plate and the second mounting plate; The heating tubes are positioned close to the gas supply components and surround the periphery of each gas supply component.

7. The cell edge passivation device according to claim 1, characterized in that, The first gas supply component and the second gas supply component work together to form a gas supply system; The cavity contains at least one of the aforementioned gas supply systems.

8. The cell edge passivation device according to claim 7, characterized in that, The cavity is provided with an exhaust port, which is located on both sides of the gas supply system.

9. The cell edge passivation device according to claim 1, characterized in that, It also includes several rotating rollers, which are rotatably inserted into the cavity and cooperate with each other to form the bearing platform.

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