Liquid injection hole cleaning device

Abstract

The utility model discloses a liquid injection hole cleaning device which comprises a rack. The cleaning structure is mounted on the rack and comprises a driving mechanism and a cleaning brush, and the cleaning brush is used for cleaning the battery cell located below under the driving of the driving mechanism; the protection structure is connected to the cleaning structure and / or the rack and comprises an outer mounting body and an inner protection cover, and the inner protection cover is arranged on the outer mounting body in a penetrating mode and used for allowing the battery cell to penetrate, so that at least part of the main body can be covered with the inner protection cover, and the pole columns can be completely exposed; and the splashing electrolyte is blocked by the outer mounting body. According to the liquid injection hole cleaning device disclosed by the utility model, electrolyte thrown out by the cleaning brush can be blocked, so that the electrolyte is prevented from being thrown to the side wall surface of a battery cell, and the effect of protecting the battery cell is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery manufacturing, in particular to a liquid injection hole cleaning device. Background Art

[0002] Power batteries are the power source of electric vehicles. In the production process of power batteries, it is necessary to inject electrolyte into the power battery through the injection hole on the battery cover. After the injection is completed, electrolyte will remain at the injection hole. Before welding and sealing the injection hole, the electrolyte around the injection hole needs to be cleaned.

[0003] In current production, physical methods are usually used to wipe the residual electrolyte in and around the injection hole. However, during the wiping process, the speed of the brush is too high, causing the electrolyte to splash, which causes the electrolyte to splash onto the wall of the battery, increasing the subsequent cleaning cost of the battery. Utility Model Content

[0004] In order to solve at least one of the problems existing in the above-mentioned prior art, according to one aspect of the utility model, a liquid injection hole cleaning device is provided, comprising: a frame; a cleaning structure, installed on the frame, comprising a driving mechanism and a cleaning brush, and the cleaning brush is used to clean the battery cell located below under the drive of the driving mechanism; a protective structure, connected to the cleaning structure and / or the frame, comprising an outer mounting body and an inner protective cover, the inner protective cover is penetrated by the outer mounting body, and is used to allow the battery cell to penetrate, so that it can be covered outside at least part of the main body, and the pole can be completely exposed, so that when the cleaning structure cleans the liquid injection hole on the main body, the splashing electrolyte can be blocked by the outer mounting body.

[0005] In some embodiments, the outer mounting body is box-shaped, and has a receiving cavity and an upper opening. The receiving cavity is used to collect the electrolyte, and the upper opening is used for the cleaning brush to extend into.

[0006] In some embodiments, a mounting hole is provided on the outer mounting body, and the mounting hole is used to connect with the cleaning structure.

[0007] In some embodiments, the protective structure further includes a negative pressure suction nozzle, a through hole is provided on the bottom wall of the external mounting body, and the negative pressure suction nozzle is installed in the through hole.

[0008] In some embodiments, the negative pressure suction nozzle is disposed at one end of the outer mounting body in the length direction, and the height relative to the horizontal plane gradually increases from the end of the outer mounting body where the negative pressure suction nozzle is disposed to the other end of the outer mounting body where the negative pressure suction nozzle is not disposed.

[0009] In some embodiments, the height of the outer mounting body is greater than the height of the portion of the inner shield located in the receiving cavity.

[0010] In some embodiments, the height of the outer mounting body ranges from 60 mm to 70 mm, and the height of the portion of the inner shield located in the receiving cavity ranges from 10 mm to 20 mm.

[0011] In some embodiments, the battery cell is a cylindrical battery cell, the inner protective cover is cylindrical, and the inner diameter of the inner protective cover is greater than the outer diameter of the battery cell.

[0012] In some embodiments, the wall thickness of the outer mounting body and the inner shield ranges from 1 mm to 4 mm.

[0013] In some embodiments, the inner shield is configured to allow a portion of the body provided with one end of the pole to be exposed from the inner shield.

[0014] In summary, the liquid injection hole cleaning and protection structure provided by the utility model has the following technical effects:

[0015] By placing a protective structure on the cleaning structure and / or the frame, the inner protective cover in the protective structure can be cleared to allow the battery cell to pass through, and the pole can be completely exposed, so that when the cleaning brush cleans the battery cell, the outer mounting body in the protective structure can block the electrolyte thrown out by the cleaning brush, thereby avoiding the electrolyte from splashing onto the side wall of the main body of the battery cell when being thrown out by the cleaning brush, thereby achieving the protection effect on the battery cell and avoiding the subsequent cost of cleaning the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a liquid injection hole cleaning device according to an embodiment of the utility model;

[0017] Figure 2 for Figure 1 Structural schematic diagram of the cleaning structure and the protective structure;

[0018] Figure 3 for Figure 1 A schematic diagram of the structure of the protective structure;

[0019] Figure 4 for Figure 1 The front view of the protective structure in FIG.

[0020] Figure 5 It is a schematic diagram of the structure of the battery cell of an embodiment of the utility model.

[0021] Figures: 100 - liquid injection hole cleaning device, 10 - frame, 20 - cleaning structure, 21 - driving mechanism, 211 - driving motor, 212 - gear transmission assembly, 22 - cleaning brush, 23 - mounting frame, 30 - protective structure, 31 - external mounting body, 311 - receiving chamber, 312 - upper opening, 313 - mounting hole, 314 - through hole, 315 - bottom plate, 316 - side panel, 32 - inner protective cover, 33 - negative pressure nozzle, 200 - battery cell, 210 - main body, 220 - pole. DETAILED DESCRIPTION

[0022] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0025] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0026] See also Figure 5 , is a schematic diagram of the structure of the battery cell 200 to be cleaned in this embodiment, specifically, a cylindrical battery cell, including a main body 200 and a pole 220 arranged at one end of the main body 200, and a liquid injection hole is also provided on the end surface of the main body 210 at one end of the pole 220.

[0027] See also Figures 1 to 4 , a liquid injection hole cleaning device 100 provided in an embodiment of the utility model includes a frame 10, a cleaning structure 20 and a protective structure 30.

[0028] Among them, the frame 10 serves as an installation base; the cleaning structure 20 is installed on the frame 10, including a driving mechanism 21 and a cleaning brush 22, the cleaning brush 22 is used to clean the battery cell 200 located below under the drive of the driving mechanism 21; the protective structure 30 is connected to the cleaning structure 20 and / or the frame 10, including an outer mounting body 31 and an inner protective cover 32, the inner protective cover 32 is penetrated by the outer mounting body 31, and is used to allow the battery cell 200 to penetrate, so that it can be covered outside at least part of the main body 210, and the pole 220 can be completely exposed, so that when the cleaning structure 20 cleans the injection hole on the main body 210, the outer mounting body 31 can block the splashing electrolyte.

[0029] The above-mentioned liquid injection hole cleaning device 100, through the protective structure 30 on the cleaning structure 20 and / or the frame 10, the inner protective cover 32 in the protective structure 30 can allow the battery cell 200 to pass through, and the pole 20 can be completely exposed, so that when the cleaning brush 22 cleans the battery cell 200, the outer mounting body 31 in the protective structure 30 can block the electrolyte thrown out by the cleaning brush 22, thereby avoiding the electrolyte from being splashed onto the wall surface of the main body 210 of the battery cell 200 when being thrown out by the cleaning brush 22, thereby achieving the protection effect of the battery cell 200 and avoiding the subsequent cleaning cost of the battery cell 200.

[0030] Among them, the driving mechanism 21 may include a driving motor 211 and a gear transmission assembly 212, and the gear transmission assembly 212 is transmission-connected between the driving motor 211 and the cleaning brush 22, so that under the drive of the driving motor 211, the cleaning brush 22 can rotate, thereby cleaning the injection hole of the battery cell 200.

[0031] In one embodiment, the outer mounting body 31 may be configured in a plate shape, thereby achieving the effect of blocking the electrolyte thrown out by the cleaning brush 22 .

[0032] Specifically, please refer to the structural diagram of the protective structure 30 of this embodiment. Figures 2 to 4 The outer mounting body 31 is box-shaped, having a receiving cavity 311 and an upper opening 312. The receiving cavity 311 is used to collect electrolyte, and the upper opening 312 is used for the cleaning structure 20 to extend into. In this way, by setting the outer mounting body 31 in a box shape, the electrolyte splashed out by the cleaning structure 20 when cleaning the battery cell 200 flies into the outer mounting body 31 and is collected by the outer mounting body 31, so as to facilitate the subsequent treatment of the electrolyte; further, by collecting the electrolyte, the electrolyte is prevented from protecting the surrounding components and polluting the environment.

[0033] Furthermore, in order to install the entire protective structure 30 on the injection hole cleaning device 100, a mounting hole 313 is provided on the outer mounting body 31, and the mounting hole 313 is used to connect with the cleaning structure 20. Specifically, the cleaning structure 20 also includes a mounting frame 23, and the mounting frame 23 is used to install the gear transmission assembly 212 and the cleaning brush 22, and the mounting hole 313 is used to connect with the mounting frame 23. In this way, by providing the mounting hole 313 on the outer mounting body 31, the installation of the cleaning structure 20 can be achieved through the mounting hole 313, thereby facilitating the cleaning structure 20 to extend into the outer mounting body 31.

[0034] In this embodiment, the box-shaped outer mounting body 31 includes a bottom plate 315 and a side panel 316. A receiving cavity 311 is formed between the side panel 316 and the bottom plate 315. The side panel 316 forms an upper opening 312. The inner shield 32 is passed through the bottom plate 315. The side panel 316 is provided with a mounting hole 313.

[0035] Specifically, since the cleaning structure 20 can clean multiple battery cells 200 at the same time when cleaning the battery cells 200, the battery cells 200 are arranged in a row, and further, are arranged in a row along the length direction of the external mounting body 31. The mounting holes 313 of this embodiment are arranged at the end of the external mounting body 31 along the length direction of the external mounting body 31, so that they can be installed at both ends of the length direction of the cleaning structure 20.

[0036] See also Figure 1 , Figure 3 and Figure 4 In one embodiment of the utility model, in order to facilitate the discharge of the electrolyte collected in the external mounting body 31, the protective structure 30 also includes a negative pressure suction nozzle 33, and a through hole 314 is provided on the bottom wall of the external mounting body 31, and the negative pressure suction nozzle 33 is installed in the through hole 314. In this way, by arranging the negative pressure suction nozzle 33 at the bottom of the external mounting body 31, the electrolyte collected in the external mounting body 31 can be quickly sucked out when the negative pressure device is connected through the negative pressure suction nozzle 33, and there is no need to disassemble the protective structure 30 relative to the machine, so as to facilitate the subsequent use of the entire protective structure 30.

[0037] Specifically, two negative pressure suction nozzles 33 are provided on the outer mounting body 31 in this embodiment to improve the efficiency of sucking out the electrolyte.

[0038] For further information, see Figure 4In order to more conveniently suck out the electrolyte in the external mounting body 31, the negative pressure suction nozzle 33 is located at one end of the length direction of the external mounting body 31, and the height relative to the horizontal plane a gradually increases from the end of the external mounting body 31 where the negative pressure suction nozzle 33 is provided to the other end of the external mounting body 31 where the negative pressure suction nozzle is not provided. In this way, the end of the external mounting body 31 where the negative pressure suction nozzle 33 is provided has a lower height. When the electrolyte is collected in the external mounting body 31, the electrolyte gradually flows to the end where the negative pressure suction nozzle 33 is provided and is gathered, thereby facilitating the rapid suction of the electrolyte and improving the suction efficiency of the electrolyte.

[0039] It can be understood that in order to allow the splashed electrolyte during cleaning to fly into the outer mounting body 31 as much as possible, the height of the outer mounting body 31 is greater than the height of the portion of the inner protective cover 32 extending into the accommodating cavity 311, and the height range of the outer mounting body 31 is 60mm-70mm. For example, the height range of the outer mounting body 31 can be set to 60mm, 62mm, 65mm, 68mm or 70mm according to the model of different battery cells 200, which is not limited here.

[0040] Specifically, the height of the portion of the inner shield 32 extending into the receiving cavity 311 in this embodiment ranges from 10 to 20 mm. This height setting can adapt to the exposure of the battery cell 200 from the upper end surface of the inner shield 32, without causing waste of preparation materials by setting the inner shield 32 and the outer mounting body 31 at a high height. For example, the height of the inner shield 32 can be set to 10 mm, 12 mm, 15 mm, 18 mm or 20 mm according to the model of the battery cell 200 to be cleaned, which is not limited here.

[0041] Among them, when cleaning the battery cell 200, it can be understood that in order to facilitate the insertion or removal of the battery cell 200 in the inner protective cover 32, the inner protective cover 32 is also configured to be cylindrical, and the inner diameter of the inner protective cover 32 is larger than the outer diameter of the battery cell 200. In this way, the collision between the inner protective cover 32 and the outer shell of the battery cell 200 is avoided, the wear on the outer surface of the battery cell 200 is avoided, and the insertion and removal of the battery cell 200 relative to the inner protective cover 32 is facilitated.

[0042] It can be understood that when the battery cell 200 is inserted into the inner shield 32 for cleaning, one end of the cover of the battery cell 200 is exposed in the receiving cavity 311 relative to the inner shield 32, that is, the inner shield 32 is configured to allow a portion of the main body 210 with one end of the pole 220 to be exposed in the inner shield 32, so that the electrolyte at the injection hole flows into the outer mounting body 31, and the electrolyte is prevented from flowing into the gap between the main body 210 and the inner shield 32 when the injection hole is cleaned, thereby failing to protect the battery cell 200. In another embodiment, the upper surface of the main body 210 can be configured to be just flush with the upper end surface of the inner shield 32.

[0043] Furthermore, in this embodiment, the wall thickness of the outer mounting body 31 and the inner shield 32 ranges from 1 mm to 4 mm, so that the structural strength of the outer mounting body 31 and the inner shield 32 can be ensured by setting the thickness, and the waste of materials caused by using too much material to prepare the outer mounting body 31 and the inner shield 32 can be avoided. The wall thickness of the outer mounting body 31 and the inner shield 32 can be set to values ​​such as 1 mm, 2 mm, 3 mm or 4 mm, which are not limited here.

[0044] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A liquid injection hole cleaning device (100), used for cleaning a liquid injection hole of a battery cell (200), wherein the battery cell (200) comprises a main body (210) and a pole (220) disposed on the main body (210), wherein the liquid injection hole is disposed at one end of the main body (210) where the pole (220) is disposed, and wherein: include: Frame (10); a cleaning structure (20), mounted on the frame (10), comprising a driving mechanism (21) and a cleaning brush (22), wherein the cleaning brush (22) is used to clean the battery cell (200) located below under the drive of the driving mechanism (21); A protective structure (30) is connected to the cleaning structure (20) and / or the frame (10), and comprises an outer mounting body (31) and an inner protective cover (32); the inner protective cover (32) is passed through the outer mounting body (31) and is used for the battery cell (200) to pass through, so as to be able to cover at least a portion of the main body (210) and to allow the pole (220) to be completely exposed, so that when the cleaning structure (20) cleans the injection hole on the main body (210), the outer mounting body (31) can block splashing electrolyte.

2. The liquid injection hole cleaning device (100) according to claim 1, characterized in that: The outer mounting body (31) is box-shaped and has a receiving cavity (311) and an upper opening (312). The receiving cavity (311) is used to collect electrolyte, and the upper opening (312) is used to allow the cleaning brush (22) to extend into.

3. The liquid injection hole cleaning device (100) according to claim 2, characterized in that: The outer mounting body (31) is provided with a mounting hole (313), and the mounting hole (313) is used to be connected to the cleaning structure (20).

4. The liquid injection hole cleaning device (100) according to claim 2 or 3, characterized in that: The protective structure (30) further comprises a negative pressure suction nozzle (33); a through hole (314) is provided on the bottom wall of the external mounting body (31); and the negative pressure suction nozzle (33) is mounted in the through hole (314).

5. The liquid injection hole cleaning device (100) according to claim 4, characterized in that: The negative pressure suction nozzle (33) is arranged at one end of the outer mounting body (31) in the length direction, and the height relative to the horizontal plane gradually increases from one end of the outer mounting body (31) where the negative pressure suction nozzle (33) is arranged to the other end of the outer mounting body (31) where the negative pressure suction nozzle (33) is not arranged.

6. The liquid injection hole cleaning device (100) according to claim 2 or 3, characterized in that: The height of the outer mounting body (31) is greater than the height of the portion of the inner shield (32) located in the receiving cavity (311).

7. The liquid injection hole cleaning device (100) according to claim 6, characterized in that: The height of the outer mounting body (31) ranges from 60 mm to 70 mm, and the height of the portion of the inner shield (32) located in the receiving cavity (311) ranges from 10 mm to 20 mm.

8. The liquid injection hole cleaning device (100) according to any one of claims 1 to 3, characterized in that: The battery core (200) is a cylindrical battery core, the inner protective cover (32) is cylindrical, and the inner diameter of the inner protective cover (32) is greater than the outer diameter of the battery core (200).

9. The liquid injection hole cleaning device (100) according to any one of claims 1 to 3, characterized in that: The wall thickness of the outer mounting body (31) and the inner shield (32) ranges from 1 mm to 4 mm.

10. The liquid injection hole cleaning device (100) according to any one of claims 1 to 3, characterized in that: The inner shield (32) is configured to allow a portion of the main body (210) provided with one end of the pole (220) to be exposed from the inner shield (32).

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