Battery negative pressure formation liquid leakage prevention device

Abstract

The utility model provides a battery negative pressure formation liquid leakage prevention device which comprises a charging platform, a negative pressure nozzle and a probe are installed below the charging platform, the negative pressure nozzle is used for being connected with a liquid injection opening of a battery, and the probe is used for being connected with the battery for testing when formation is finished. A pressing type sealing ring is placed in the negative pressure nozzle and used for preventing electrolyte from flowing down rapidly. According to the negative pressure nozzle, the pressing type sealing ring is placed in the negative pressure nozzle, the negative pressure nozzle is pressed on a battery liquid injection opening, the pressing type sealing ring is slowly jacked up, and the sealing effect disappears; the charging platform is bounced off when the work is finished or under an abnormal condition, and when the negative pressure nozzle is lifted up, the sealing ring falls down to seal the liquid injection port firstly, so that electrolyte is prevented from flowing down quickly; and if the exception is handled and charging continues, the electrolyte which is sealed by the sealing ring and does not fall can also slowly flow back into the battery after being pressed back by the negative pressure nozzle, so that the waste of the electrolyte is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production, in particular to a negative pressure formation leakage prevention device for a battery. Background Art

[0002] At present, when the battery is formed under negative pressure, the electrolyte will be extracted by drawing out the negative pressure. If the negative pressure is suddenly disconnected, the negative pressure nozzle will pop open and the electrolyte that has not returned will drip directly onto the battery and formation equipment. The cleaning of the electrolyte is relatively cumbersome, causing corrosion of the equipment and battery and waste of the electrolyte, thereby affecting the battery welding yield. Utility Model Content

[0003] In order to solve the above problems, the utility model aims to propose a battery negative pressure formation leakage prevention device, by placing a push-up sealing ring inside the negative pressure nozzle, the negative pressure nozzle is pressed onto the battery filling port, the push-up sealing ring is slowly pushed up, and the sealing effect disappears; when the work is finished or under abnormal circumstances, the charging platform pops up, and when the negative pressure nozzle is lifted, the sealing ring falls and first closes the filling port to prevent the electrolyte from flowing down quickly; if the abnormality is handled and charging continues, the electrolyte that has not fallen down and is sealed by the sealing ring can also slowly flow back into the battery after the negative pressure nozzle is pressed back, thereby reducing the waste of electrolyte.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] A battery negative pressure formation leakage prevention device comprises a charging platform, a negative pressure nozzle and a probe are installed below the charging platform, the negative pressure nozzle is used to be connected to the liquid injection port of the battery, the probe is used to be connected to the battery for testing at the end of formation, and a press-on sealing ring is placed inside the negative pressure nozzle to prevent the electrolyte from flowing down quickly.

[0006] Furthermore, the pressed-up sealing ring includes a support rod, a sealing ring is provided on the top of the support rod, a blocking rod is provided on the bottom, and a first limiting ring and a second limiting ring are provided inside the negative pressure nozzle for overlapping with the sealing ring and the blocking rod respectively.

[0007] Furthermore, it also includes a fixed platform, the bottom of which is connected to an L-shaped connecting bracket, the vertical end of the L-shaped connecting bracket is slidably connected to the charging platform, and the lateral end of the L-shaped connecting bracket is provided with an opening; a press-type bracket is overlapped on the opening, one end of the press-type bracket is rotatably connected to the charging platform, and the other end is connected to a funnel for receiving the electrolyte.

[0008] Furthermore, a through hole is provided at the lateral end of the L-shaped connecting bracket to allow the negative pressure nozzle to pass through.

[0009] Furthermore, both ends of the charging platform are connected to cylinders via cylindrical brackets.

[0010] Beneficial effects: The utility model places a push-up sealing ring inside the negative pressure nozzle. The negative pressure nozzle is pressed onto the battery filling port, and the push-up sealing ring is slowly pushed up, and the sealing effect disappears; when the work is finished or under abnormal circumstances, the charging platform pops up, and when the negative pressure nozzle is lifted up, the sealing ring falls down and first closes the filling port to prevent the electrolyte from flowing down quickly; if the abnormality is handled and charging continues, the electrolyte that has not fallen down and is sealed by the sealing ring can also slowly flow back into the battery after the negative pressure nozzle is pressed back, thereby reducing the waste of electrolyte. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0012] Figure 1 The three-dimensional structure of the negative pressure battery leakage prevention device according to the embodiment of the utility model is shown in FIG. Figure 1 ;

[0013] Figure 2 The three-dimensional structure of the negative pressure battery leakage prevention device according to the embodiment of the utility model is shown in FIG. Figure 2 ;

[0014] Figure 3 A schematic diagram of a negative pressure nozzle and a press-up sealing ring of a battery negative pressure formation anti-leakage device according to an embodiment of the utility model;

[0015] Figure 4 A schematic diagram of a press-up seal ring of a battery negative pressure formation anti-leakage device according to an embodiment of the utility model;

[0016] Figure 5 It is a schematic diagram of the cooperation between the negative pressure nozzle and the press-on sealing ring of the battery negative pressure formation anti-leakage device described in an embodiment of the utility model. DETAILED DESCRIPTION

[0017] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0018] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0019] Example 1

[0020] See also Figure 1-5: A battery negative pressure formation leakage prevention device, comprising a charging platform 1, a negative pressure nozzle 2 and a probe 3 are installed below the charging platform 1, the negative pressure nozzle 2 is used to be connected to the injection port of the battery 4, the probe 2 is used to be connected to the battery 4 for testing at the end of formation, and a press-on sealing ring 5 is placed inside the negative pressure nozzle 2 to prevent the electrolyte from flowing down quickly.

[0021] A press-on sealing ring is placed inside the negative pressure nozzle of the present embodiment. When the negative pressure nozzle is pressed onto the battery filling port, the press-on sealing ring is slowly pushed up and the sealing effect disappears. When the work is finished or under abnormal circumstances, the charging platform pops open, and when the negative pressure nozzle is lifted up, the sealing ring falls down and first closes the filling port to prevent the electrolyte from flowing down quickly. If the abnormality is handled and charging continues, the electrolyte that has not fallen down and is sealed by the sealing ring can also slowly flow back into the battery after the negative pressure nozzle is pressed back, thereby reducing the waste of electrolyte.

[0022] In a specific example, the press-on sealing ring 5 includes a support rod 501, a sealing ring 502 is provided on the top of the support rod 501, and a blocking rod 503 is provided at the bottom. The negative pressure nozzle 2 is provided with a first limiting ring 201 and a second limiting ring 202 for overlapping with the sealing ring 502 and the blocking rod 503 respectively.

[0023] When the negative pressure nozzle is pressed onto the battery filling port, the blocking rod of the pressure-lifting sealing ring is slowly pushed up and the sealing effect disappears; when the negative pressure nozzle is separated from the battery filling port, the sealing ring falls due to gravity, and the first limit ring and the sealing ring overlap to achieve sealing, preventing the electrolyte from dripping directly onto the battery and the formation equipment.

[0024] It should be noted that when the battery is in contact with the sealing ring, no sealing is required. The smooth flow of electrolyte in the battery and the pipeline is achieved. It is only necessary to make sure that the lower end of the pressure-type sealing ring does not block the filling port. During formation, negative pressure needs to be drawn inside the battery, so the electrolyte will enter the pipeline. After formation, the negative pressure stops, and the electrolyte will flow back to the battery normally during the shelf stage.

[0025] In a specific example, it also includes a fixed platform 6, and an L-shaped connecting bracket 7 is connected to the bottom of the fixed platform 6. The vertical end of the L-shaped connecting bracket 7 is slidably connected to the charging platform 1, and an opening 701 is provided at the lateral end of the L-shaped connecting bracket 7; a press-type bracket 8 is overlapped on the opening 701, and one end of the press-type bracket 8 is rotatably connected to the charging platform 1, and the other end is connected to a funnel 9 for receiving the electrolyte.

[0026] The upper end of the pressure-activated bracket of the present embodiment is rotatably connected to the charging platform. When the charging platform moves up and down, the pressure-activated bracket moves inward and outward, so that the electrolyte receiving funnel will not interfere with the normal operation of the negative pressure nozzle. When the negative pressure nozzle of the charging platform finishes working, the charging platform is lifted up. At this time, the pressure-activated bracket drives the electrolyte receiving funnel to rotate inward and is located below the negative pressure nozzle. The funnel can receive the electrolyte that may drip, and the dripping electrolyte is discharged along the drain pipe of the funnel.

[0027] In a specific example, a through hole is provided at the lateral end of the L-shaped connecting bracket 7 to allow the negative pressure nozzle 2 to pass through.

[0028] In a specific example, both ends of the charging platform 1 are connected to cylinders via cylindrical brackets.

[0029] In this embodiment, the charging platform is moved up and down by a cylinder.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery negative pressure formation leakage prevention device, characterized in that: The invention comprises a charging platform (1), wherein a negative pressure nozzle (2) and a probe (3) are installed below the charging platform (1), wherein the negative pressure nozzle (2) is used to be connected to the liquid injection port of a battery (4), and the probe (3) is used to be connected to the battery (4) for testing at the end of formation, and a press-type sealing ring (5) is placed inside the negative pressure nozzle (2) to prevent the electrolyte from flowing down quickly.

2. The battery negative pressure formation leakage prevention device according to claim 1, characterized in that: The press-on sealing ring (5) comprises a support rod (501), a sealing ring (502) is arranged on the top of the support rod (501), and a blocking rod (503) is arranged on the bottom, and a first limiting ring (201) and a second limiting ring (202) are arranged inside the negative pressure nozzle (2) for correspondingly overlapping with the sealing ring (502) and the blocking rod (503), respectively.

3. The battery negative pressure formation leakage prevention device according to claim 1, characterized in that: It also comprises a fixed platform (6), the bottom of which is connected to an L-shaped connection bracket (7), the vertical end of the L-shaped connection bracket (7) is slidably connected to the charging platform (1), and the end of the lateral end of the L-shaped connection bracket (7) is provided with an opening (701); a pressure-type bracket (8) is overlapped on the opening (701), one end of the pressure-type bracket (8) is rotatably connected to the charging platform (1), and the other end is connected to a funnel (9) for receiving electrolyte.

4. The battery negative pressure formation leakage prevention device according to claim 3, characterized in that: A through hole is provided at the lateral end of the L-shaped connecting bracket (7) to allow the negative pressure nozzle (2) to pass through.

5. The battery negative pressure formation leakage prevention device according to claim 1, characterized in that: Both ends of the charging platform (1) are connected to cylinders via cylindrical brackets.

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