Battery piece edge passivation device

Abstract

The utility model provides a battery piece edge passivation device, which comprises a cavity internally provided with a bearing platform used for bearing a carrier provided with a battery piece; the gas supply system is arranged in the cavity, is positioned on two sides of the bearing platform and is used for releasing process gas towards the edge of the battery piece; wherein a plurality of exhaust holes are formed in the cavity, are positioned on two sides of the gas supply system, are arranged close to the gas supply system, and are used for extracting redundant process gas from the cavity. The air supply systems are arranged on the two sides of the bearing platform, cut edges on the two side edges of the battery piece can be passivated at the same time, and therefore the efficiency of passivating the cut edges of the battery piece is improved. And the exhaust holes are formed in the two sides close to the gas supply system and used for extracting redundant process gas from the cavity, so that disorder of gas flow in the cavity during passivating treatment of the edge of the battery piece is avoided, and the passivating treatment effect of the edge of the battery piece is improved.

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 passivating 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] A gas supply system, located within the cavity and on both sides of the support platform, is used to release process gas toward the edge of the battery cell;

[0008] The cavity is provided with a number of exhaust holes, which are located on both sides of the gas supply system and close to the gas supply system, for the purpose of extracting excess process gas from the cavity.

[0009] The beneficial effects of the battery cell edge passivation device provided by this utility model are as follows: By setting up an air supply system on both sides of the support platform, the cut edges on both sides of the battery cell can be passivated simultaneously, thereby improving the efficiency of the passivation treatment of the cut edges of the battery cell. Furthermore, by opening exhaust holes on both sides near the air supply system to extract excess process gas from the cavity, turbulence in the airflow inside the cavity is avoided during the passivation treatment of the battery cell edges, thus improving the effectiveness of the passivation treatment.

[0010] In some embodiments, the gas supply system includes a first gas supply component and a second gas supply component;

[0011] The first gas supply component is located on one side of the support platform and is used to release process gas toward the edge of the battery cell;

[0012] The second gas supply component is located on the other side of the support platform and is arranged opposite to the first gas supply component, for releasing process gas toward the edge of the battery cell;

[0013] The first air supply component and the second air supply component each have at least two exhaust holes spaced apart along their extension direction on their sides.

[0014] In some embodiments, the first gas supply assembly includes a first mounting plate and a plurality of gas supply components;

[0015] The first mounting plate is disposed on one side of the support platform and extends along the extension direction of the support platform;

[0016] 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;

[0017] At least two of the vent holes are spaced apart along the extension direction of the first mounting plate.

[0018] In some embodiments, the first mounting plate is provided with a plurality of first air guide holes, the first air guide holes being close to the side wall of the air supply component, and the first air guide holes guiding the first mounting plate.

[0019] In some embodiments, the second gas supply assembly includes a second mounting plate and a plurality of gas supply components;

[0020] The second mounting plate is located on the other side of the support platform and extends along the extension direction of the support platform;

[0021] Several of the gas supply components are sequentially and spaced apart on the side of the second mounting plate near the support platform, for releasing process gas toward the support platform;

[0022] At least two of the vent holes are spaced apart along the extension direction of the second mounting plate.

[0023] In some embodiments, the second mounting plate is provided with a plurality of second air guide holes, the second air guide holes being close to the side wall of the air supply component, and the second air guide holes guiding the second mounting plate.

[0024] In some embodiments, the gas supply system further includes a plurality of gas supply hoods, each gas supply hood being provided corresponding to one gas supply component and used to cover the gas supply component;

[0025] Both the first air guide hole and the second air guide hole are located between the inner wall of the air supply hood and the outer wall of the air supply component.

[0026] In some embodiments, the cell edge passivation device further includes a controller, a flow control valve, and a gas supply pipe;

[0027] One end of the gas supply pipe is connected to the gas supply component and is used to deliver process gas into the cavity.

[0028] The flow control valve is located in the gas supply pipeline;

[0029] The controller is electrically connected to the flow control valve.

[0030] In some embodiments, the cell edge passivation device further includes a heating tube disposed on the first mounting plate and the second mounting plate;

[0031] The heating tubes are positioned close to the gas supply components and surround each gas supply component.

[0032] 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

[0033] Figure 1 A perspective view of the battery cell edge passivation device provided in the embodiments of this utility model;

[0034] Figure 2 A top view of the battery cell edge passivation device provided in the embodiment of this utility model;

[0035] Figure 3 A side view of the battery cell edge passivation device provided in the embodiment of this utility model;

[0036] Figure 4 A schematic diagram of the structure of the first gas supply component provided in the embodiment of this utility model;

[0037] Figure 5The present invention provides a schematic diagram of the structure of the first mounting plate and the second mounting plate in an embodiment.

[0038] Figure label:

[0039] 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, first through hole 313, second air supply component 32, second mounting plate 321, second air guide hole 322, second through hole 323, air supply component 33, air supply cover 34, air supply pipe 4, heating pipe 5. Detailed Implementation

[0040] 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.

[0041] 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.

[0042] This utility model embodiment provides a battery cell edge passivation device, reference... Figures 1 to 3As shown, the system includes a cavity 1, inside which is a support platform 21. The support platform 21 supports a carrier on which battery cells are mounted. The carrier clamps several of the battery cells and exposes the cut edges of the battery cells. A gas supply system 3 is located inside the cavity 1 and on both sides of the support platform 21, for releasing process gas toward the edges of the battery cells. Several exhaust ports 11 are provided inside the cavity 1, located on both sides of the gas supply system 3 and close to it. The exhaust ports 11 are connected to an external pump via pipes to extract excess process gas from the cavity 1.

[0043] In this embodiment, by providing the gas supply system 3 on both sides of the support platform 21, the cut edges of the battery cells on both sides can be passivated simultaneously, thereby improving the efficiency of the passivation process. Furthermore, by opening the exhaust holes 11 on both sides near the gas supply system 3, excess process gas is extracted from the cavity 1, preventing airflow disturbances within the cavity 1 during the passivation process of the battery cell edges, thus improving the passivation effect.

[0044] refer to Figures 1 to 3 As shown, in some embodiments, the gas supply system 3 includes a first gas supply component 31 and a second gas supply component 32. The first gas supply component 31 is located on one side of the support platform 21 and is used to release process gas toward the edge of the battery cell. The second gas supply component 32 is located on the other side of the support platform 21 and is disposed opposite to the first gas supply component 31. It is used to release process gas toward the edge of the battery cell. The sides of the first gas supply component 31 and the second gas supply component 32 are provided with at least two exhaust holes 11 at intervals along their extension direction.

[0045] In this embodiment, the first air supply component 31 and the second air supply component 32 are controlled independently. For example, when only the cut edge on one side of the battery cell needs to be passivated, the first air supply component 31 corresponding to that side of the cut edge is turned on. When both cut edges on both sides of the battery cell need to be passivated, both the first air supply component 31 and the second air supply component 32 are turned on.

[0046] It should be noted that, in order to avoid the airflow in the cavity 1 becoming chaotic after the first air supply component 31 and the second air supply component 32 are turned on, and to remove excess process gas in a timely manner, at least two exhaust holes 11 are provided at intervals along the extension direction on the side of the first air supply component 31 and the second air supply component 32.

[0047] In this embodiment, the first air supply component 31 and the second air supply component 32 are each provided with two exhaust holes 11 at intervals on their sides.

[0048] refer to Figures 1 to 4 As shown, in some specific 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 extending direction of the support platform 21. The plurality of gas supply components 33 are sequentially and spaced apart on the side of the first mounting plate 311 near the support platform 21, for releasing process gas toward the support platform 21. At least two exhaust holes 11 are spaced apart along the extending direction of the first mounting plate 311.

[0049] refer to Figures 1 to 5 As shown, in some embodiments, the first mounting plate 311 has a plurality of spaced first air guide holes 312, the first air guide holes 312 are close to the side wall of the air supply component 33, and the first air guide holes 312 conduct the first mounting plate 311.

[0050] In this embodiment, on the first mounting plate 311, a first air guide hole 312 is provided near each of the opposite side walls of the gas supply component 33. The first air guide hole 312 is an elongated hole structure that extends along the length of the gas supply component 33. By providing 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 a first air guide hole 312 is provided near each of the opposite side walls of the gas supply component 33, the occurrence of chaos in the flow of process gas is reduced when two adjacent gas supply components 33 release process gas.

[0051] 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 sequentially and spaced apart on the side of the second mounting plate 321 near the support platform 21 for releasing process gas toward the support platform 21. At least two exhaust holes 11 are spaced apart along the extending direction of the second mounting plate 321.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] In some embodiments, the cell edge passivation device further includes a controller, a flow control valve, and a gas supply pipe 4. The first mounting plate 311 has several first through holes 313, and the gas supply end of the gas supply pipe 4 passes through the first through holes 313 and communicates with the gas supply component 33 located on the first mounting plate 311, for delivering process gas into the cavity 1. The second mounting plate 321 has several second through holes 323, and the gas supply end of the gas supply pipe 4 passes through the second through holes 323 and communicates with the gas supply component 33 located on the second mounting plate 321, for delivering process gas into the cavity 1. The flow control valve is located on the gas supply pipe 4, and the controller is electrically connected to the flow control valve.

[0057] In this embodiment, the flow control valve is installed on the gas supply pipeline 4 to facilitate the control and regulation of the flow rate of the process gas.

[0058] In some embodiments, the cell edge passivation device further includes a heating tube 5 disposed on the first mounting plate 311 and the second mounting plate 321. The heating tube 5 is disposed close to the gas supply member 33 and surrounds the periphery of each gas supply member 33 to provide the process temperature required for the passivation reaction.

[0059] 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℃. Since the heating tube 5 surrounds each of the gas supply components 33, the uniformity of the heating temperature is ensured.

[0060] 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.

[0061] 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.

[0062] 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. A gas supply system, located within the cavity and on both sides of the support platform, is used to release process gas toward the edge of the battery cell; The cavity is provided with a number of exhaust holes, which are located on both sides of the gas supply system and close to the gas supply system, for the purpose of extracting excess process gas from the cavity.

2. The cell edge passivation device according to claim 1, characterized in that, The gas supply system includes a first gas supply component and a second gas supply component; The first gas supply component is located on one side of the support platform and is used to release process gas toward the edge of the battery cell; The second gas supply component is located on the other side of the support platform and is arranged opposite to the first gas supply component, for releasing process gas toward the edge of the battery cell; The first air supply component and the second air supply component each have at least two exhaust holes spaced apart along their extension direction on their sides.

3. The cell edge passivation device according to claim 2, 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; At least two of the vent holes are spaced apart along the extension direction of the first mounting plate.

4. The cell edge passivation device according to claim 3, characterized in that, The first mounting plate has a plurality of first air guide holes, which are close to the side wall of the air supply component and conduct the first air guide holes through the first mounting plate.

5. The cell edge passivation device according to claim 4, characterized in that, The second gas supply assembly includes a second mounting plate and several 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 sequentially and spaced apart on the side of the second mounting plate near the support platform, for releasing process gas toward the support platform; At least two of the vent holes are spaced apart along the extension direction of the second mounting plate.

6. The cell edge passivation device according to claim 5, characterized in that, The second mounting plate has a plurality of second air guide holes, which are close to the side wall of the air supply component and conduct the second mounting plate through.

7. The cell edge passivation device according to claim 6, characterized in that, The gas supply system also includes a plurality of gas supply hoods, each of which is provided corresponding to one of the gas supply components and is used to cover the gas supply component. Both the first air guide hole and the second air guide hole are located between the inner wall of the air supply hood and the outer wall of the air supply component.

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

9. The cell edge passivation device according to claim 5, 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 each gas supply component.

10. 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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