Battery liquid injection pollution protection structure

Abstract

The utility model discloses a battery liquid injection pollution protection structure, relates to the technical field of battery production, and aims to solve the problems in the prior art that the quality of a battery is influenced and the production cost is increased due to the overflow of electrolyte during liquid injection of the battery, and the battery liquid injection pollution protection structure comprises a liquid injection head, a liquid collection cylinder and a recovery cavity, according to the utility model, through the cooperation of the liquid injection head and the liquid collection cylinder, the problems of electrolyte overflow and crystallization in the battery processing process are effectively reduced, the production efficiency and the product quality are improved, and the wedge-shaped design of the isolation slide block and the overflowing slide groove can guide the overflowed electrolyte to enter the liquid collection cylinder; the electrolyte is prevented from overflowing to the surface of the battery and crystallizing, the redundant electrolyte can be reliably guided to the recycling cavity for recycling through the design of the liquid collecting cavity and the flow guide cavity and the connection of the recycling cavity, the equipment cost and the production cost are reduced, the battery shell is protected from being corroded by the electrolyte, and the safety in the subsequent use process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production, in particular to a battery liquid injection pollution protection structure. Background Art

[0002] Batteries are widely used and have greatly facilitated people's lives. However, during the battery processing process, when the electrolyte is injected into the battery, internal gas cannot be quickly discharged, causing the electrolyte to overflow from the injection port and flow onto the battery surface. After flowing through the battery surface, the electrolyte forms crystals, affecting the battery's appearance and making it very difficult to clean. Furthermore, the electrolyte is corrosive and can easily corrode the lithium-ion battery casing, posing a threat to the safety of the battery during subsequent use.

[0003] The current method for cleaning electrolyte crystals is wiping with non-woven fabric. The equipment structure is used to wipe the injection hole back and forth to remove residual electrolyte and its crystals on the surface. The wiping effect is not obvious and manual visual inspection and rework are required. The equipment cost is high, the non-woven fabric cannot be reused, and the consumption is serious, which increases production costs.

[0004] Therefore, the present application provides a battery liquid injection pollution protection structure to meet the needs. Utility Model Content

[0005] The purpose of this application is to provide a battery liquid injection pollution protection structure to protect the battery surface during liquid injection to keep the battery surface clean and pollution-free, thereby reducing the cost increased by cleaning electrolyte crystals during production.

[0006] To achieve the above objectives, the present application provides the following technical solution: a battery liquid injection contamination protection structure, comprising:

[0007] The injection head is a cylindrical shell that is transparent from top to bottom. A positioning ring is provided on the upper outer wall of the injection head. An isolation slider is arranged in an array around the lower outer wall of the injection head. The isolation slider is a wedge-shaped block with the tip facing upward;

[0008] The liquid collecting cylinder is a cylindrical shell with a transparent bottom, a sealing spring is pressed between the liquid collecting cylinder and the positioning ring, a liquid collecting chamber and an isolation sleeve are provided inside the liquid collecting cylinder, the liquid collecting chamber is located above the isolation sleeve, the isolation sleeve is adapted to the liquid injection head, the inner wall of the isolation sleeve is slidably connected to the outer wall of the liquid injection head, the inner wall of the isolation sleeve is surrounded by an array of flow chutes, the flow chute passes through the isolation sleeve up and down, the flow chute is a wedge-shaped groove and the upper half of the flow chute is adapted to the isolation slider, the isolation slider cooperates with the flow chute to seal and isolate the top and bottom surfaces of the isolation sleeve;

[0009] The recovery chamber is connected to a guide chamber on one side of the liquid collecting cylinder. The liquid collecting chamber is connected to the recovery chamber through the guide chamber. The recovery chamber is used to insert a suction head to recover the electrolyte.

[0010] Preferably, a sealing ring is provided on the top of the liquid collecting cylinder, the inner wall of the sealing ring is slidably connected to the outer wall of the injection head, a sealing ring is provided on the inner wall of the sealing ring, and the sealing spring is compressed between the top surface of the sealing ring and the positioning ring.

[0011] Preferably, the isolation sleeve is flush with the bottom surface of the liquid collecting cylinder, and a sealing gasket is provided at the bottom of the liquid collecting cylinder, and the sealing gasket is annular.

[0012] Preferably, the bottom surfaces of the liquid collecting chamber and the diversion chamber are flush with the recovery chamber, and a diversion boss is provided on the bottom surface of the liquid collecting chamber. The diversion boss is annular and the inner wall of the diversion boss is slidably connected to the injection head. The top surface of the diversion boss is higher than the bottom surface of the liquid collecting chamber, and the top of the flow chute passes through the diversion boss.

[0013] Preferably, the sealing spring presses the liquid collecting cylinder downward, and the isolation slider is engaged with the flow chute. At this time, the top surface of the isolation slider is higher than the top surface of the guide boss.

[0014] In summary, the technical effects and advantages of the utility model are:

[0015] The present invention effectively reduces electrolyte overflow and crystallization during battery processing through the coordination of the injection head and the liquid collecting barrel, thereby improving production efficiency and product quality. The wedge-shaped design of the isolation slider and the flow chute can guide electrolyte overflowing during injection into the liquid collecting barrel, preventing the electrolyte from overflowing onto the battery surface and crystallizing. At the same time, the design of the liquid collecting chamber and the diversion chamber, as well as the connection of the recovery chamber, ensure that excess electrolyte can be reliably diverted to the recovery chamber for recovery, reducing the need for manual wiping and visual inspection rework, reducing equipment and production costs, protecting the battery housing from corrosion by the electrolyte, and improving safety during subsequent use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2This is a front view structural diagram of the utility model;

[0019] Figure 3 This is a schematic diagram of the AA cross-sectional structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the BB cross-sectional structure of the utility model;

[0021] Figure 5 This is an enlarged structural diagram of point C of the utility model;

[0022] Figure 6 This is a schematic diagram of the bottom-up structure of the present invention;

[0023] Figure 7 This is a structural diagram of the liquid injection head of the utility model.

[0024] In the figure: 1. Liquid injection head; 2. Liquid collecting cylinder; 3. Recovery chamber; 4. Sealing gasket; 5. Diversion chamber; 6. Sealing spring; 7. Sealing ring; 10. Positioning ring; 11. Isolation slider; 20. Sealing ring; 21. Isolation sleeve; 22. Flow chute; 23. Diversion boss. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Example: Reference Figure 1-7 The battery injection contamination protection structure shown in the figure includes an injection head 1, which is a cylindrical shell that is transparent from top to bottom. A positioning ring 10 is provided on the upper outer wall of the injection head 1, and isolation sliders 11 are arranged in an array around the lower outer wall of the injection head 1. The isolation sliders 11 are wedge-shaped blocks with their tips facing upwards.

[0027] The liquid collecting cylinder 2 is a cylindrical shell with a transparent bottom. The liquid collecting cylinder 2 slides on the liquid injection head 1. A sealing spring 6 is pressed between the liquid collecting cylinder 2 and the positioning ring 10. The interior of the liquid collecting cylinder 2 is provided with a liquid collecting chamber and an isolation sleeve 21. The liquid collecting chamber is located above the isolation sleeve 21. The isolation sleeve 21 is adapted to the liquid injection head 1. The inner wall of the isolation sleeve 21 is slidably connected to the outer wall of the liquid injection head 1. The inner wall of the isolation sleeve 21 is surrounded by an array of flow chutes 22. The flow chutes 22 allow overflowed electrolyte to enter the liquid collecting chamber. The flow chutes 22 pass through the isolation sleeve 21 up and down. The flow chute 22 is a wedge-shaped groove and the upper half of the flow chute 22 is adapted to the isolation slider 11 for embedded sealing;

[0028] The recovery chamber 3 is connected to a guide chamber 5 on one side of the liquid collecting cylinder 2. The liquid collecting chamber is connected to the recovery chamber 3 through the guide chamber 5. The recovery chamber 3 is used to insert a suction head to recover the electrolyte.

[0029] As an implementation method in this embodiment, in order to enhance the sealing performance of the top of the liquid collecting cylinder 2, as shown in FIG. Figures 1 to 5 As shown, a sealing ring 20 is provided on the top of the liquid collecting barrel 2, the inner wall of the sealing ring 20 is slidably connected to the outer wall of the liquid injection head 1, a sealing ring 7 is provided on the inner wall of the sealing ring 20, and a sealing spring 6 is compressed between the top surface of the sealing ring 20 and the positioning ring 10.

[0030] As an implementation method in this embodiment, in order to ensure that the electrolyte enters the liquid collecting chamber, the sealing performance of the bottom of the liquid collecting cylinder 2 is enhanced, such as Figures 3 to 5 As shown, the isolation sleeve 21 is flush with the bottom surface of the liquid collecting cylinder 2. A sealing gasket 4 is provided at the bottom of the liquid collecting cylinder 2. The sealing gasket 4 is annular.

[0031] As an implementation method in this embodiment, in order to facilitate the use of the suction head to collect the electrolyte in the liquid collection chamber, as shown in FIG. Figure 4 As shown, the liquid collecting chamber and the guide chamber 5 are flush with the bottom surface of the recovery chamber 3. A guide boss 23 is provided on the bottom surface of the liquid collecting chamber. The guide boss 23 is annular and the inner wall of the guide boss 23 is slidably connected to the injection head 1. The top surface of the guide boss 23 is higher than the bottom surface of the liquid collecting chamber, and the top of the flow chute 22 passes through the guide boss 23.

[0032] As an implementation method in this embodiment, in order to reduce the residual electrolyte in the liquid collecting chamber, as shown in FIG. Figure 5 As shown, the sealing spring 6 presses the liquid collecting cylinder 2 downward, and the isolation slider 11 is engaged with the flow chute 22 . At this time, the top surface of the isolation slider 11 is higher than the top surface of the guide boss 23 .

[0033] The working principle of the utility model is as follows: when injecting liquid, the injection head 1 falls and is inserted into the injection port on the battery. During this process, the sealing gasket 4 is first pressed on the edge of the injection port, and the liquid collecting barrel 2 is then covered on the injection port. As the injection head 1 falls, the isolation slider 11 falls along the overflow chute 22, so that an overflow gap is generated between the isolation slider 11 and the overflow chute 22. The positioning ring 10 falls with the injection head 1, compressing the sealing spring 6, increasing the pressure between the sealing gasket 4 and the edge of the injection port, enhancing the sealing between the two, and sealing the bottom of the liquid collecting barrel 2 with the injection port. Then the electrolyte is injected into the battery from the injection head 1. As the injection proceeds, In the event of electrolyte overflow, the overflowing electrolyte is blocked by the sealing gasket 4 and enters the liquid collecting chamber along the overflow gap. The sealing ring 7 in the sealing ring 20 seals the upper part of the liquid collecting tube 2, so that the electrolyte in the liquid collecting chamber enters the recovery chamber 3 along the guide chamber 5. At this time, a suction head is used to recover the electrolyte overflowing from the liquid collecting tube 2 from the recovery chamber 3, thereby preventing the electrolyte from overflowing. After the injection is completed, the injection head 1 rises, and the sealing spring 6 presses the liquid collecting tube 2 downward, so that the isolation slider 11 is embedded in the top of the overflow chute 22. The two thereby seal the upper and lower parts of the isolation sleeve 21. At the same time, the guide boss 23 on the bottom of the liquid collecting chamber can prevent the electrolyte in the liquid collecting chamber from flowing back.

[0034] The mechanical connection involved in the present invention is a common means used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments, which belongs to common knowledge.

[0035] Components not described in detail herein are prior art.

[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A battery liquid injection pollution protection structure, characterized in that: include: The injection head (1) is a cylindrical shell that is transparent from top to bottom. A positioning ring (10) is provided on the upper outer wall of the injection head (1). An isolation slider (11) is arranged in an array around the lower outer wall of the injection head (1). The isolation slider (11) is a wedge-shaped block with the tip facing upward. A liquid collecting cylinder (2), wherein the liquid collecting cylinder (2) is a cylindrical shell with a transparent bottom, a sealing spring (6) is pressed between the liquid collecting cylinder (2) and the positioning ring (10), a liquid collecting chamber and an isolation sleeve (21) are provided inside the liquid collecting cylinder (2), the liquid collecting chamber is located above the isolation sleeve (21), the isolation sleeve (21) is adapted to the liquid injection head (1), the inner wall of the isolation sleeve (21) is slidably connected to the outer wall of the liquid injection head (1), an array of flow chutes (22) are arranged around the inner wall of the isolation sleeve (21), the flow chutes (22) pass through the isolation sleeve (21) from top to bottom, the flow chutes (22) are wedge-shaped grooves, and the upper half of the flow chutes (22) is adapted to the isolation slider (11); A recovery chamber (3) is provided, one side of the liquid collecting cylinder (2) is connected to a flow guiding chamber (5), the liquid collecting chamber is connected to the recovery chamber (3) through the flow guiding chamber (5), and the recovery chamber (3) is used for inserting a suction head to recover electrolyte.

2. The battery liquid injection pollution protection structure according to claim 1, characterized in that: A sealing ring (20) is provided on the top of the liquid collecting barrel (2), the inner wall of the sealing ring (20) is slidably connected to the outer wall of the liquid injection head (1), a sealing ring (7) is provided on the inner wall of the sealing ring (20), and the sealing spring (6) is compressed between the top surface of the sealing ring (20) and the positioning ring (10).

3. The battery liquid injection pollution protection structure according to claim 1, characterized in that: The isolation sleeve (21) is flush with the bottom surface of the liquid collecting cylinder (2). A sealing gasket (4) is provided at the bottom of the liquid collecting cylinder (2), and the sealing gasket (4) is annular.

4. The battery liquid injection pollution protection structure according to claim 1, characterized in that: The bottom surfaces of the liquid collecting chamber and the guide chamber (5) are flush with the bottom surface of the recovery chamber (3). A guide boss (23) is provided on the bottom surface of the liquid collecting chamber. The guide boss (23) is annular and the inner wall of the guide boss (23) is slidably connected to the injection head (1). The top surface of the guide boss (23) is higher than the bottom surface of the liquid collecting chamber, and the top of the flow chute (22) passes through the guide boss (23).

5. The battery liquid injection pollution protection structure according to claim 4, characterized in that: The sealing spring (6) presses the liquid collecting cylinder (2) downward, and the isolation slider (11) is engaged with the flow chute (22). At this time, the top surface of the isolation slider (11) is higher than the top surface of the flow guide boss (23).

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