Novel one-way liquid spraying prevention mechanism

Abstract

The utility model provides a novel one-way anti-liquid-spraying mechanism, relates to the technical field of battery production, and solves the problems that after liquid is injected into an existing battery, electrolyte flows back and the production effect and efficiency of the battery are influenced due to pressure difference between the inside and the outside of the battery. The liquid injection pipe is communicated with the liquid outlet end of a liquid storage mechanism, the blowout prevention pipe is connected to the liquid outlet end of the liquid injection pipe and used for preventing electrolyte from flowing back after vacuum is broken after liquid injection is completed, a liquid injection valve is connected to the side wall of the liquid injection pipe, and a liquid injection nozzle used for extending into a liquid injection hole of a battery to inject the electrolyte is arranged at the liquid outlet end of the blowout prevention pipe. The liquid injection pipe comprises a liquid injection channel, and the blowout prevention pipe comprises a plurality of blowout prevention injection channels and a plurality of blowout prevention vortex channels which are communicated alternately. The liquid injection valve has the beneficial effects that the electrolyte can be prevented from flowing back to the liquid injection valve to form crystals to block a liquid injection pipeline after vacuum is broken during liquid injection, and meanwhile, the electrolyte is prevented from splashing from the liquid injection hole to pollute a battery cell after the liquid injection nozzle is moved away.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production, in particular to a novel one-way liquid spray prevention mechanism. Background Art

[0002] In the current battery production process, the injection process is to first evacuate the battery to form a vacuum inside to prevent air from affecting the battery quality, then open the injection valve to inject electrolyte into the battery, and break the vacuum after injection. However, due to the negative pressure difference between the inside of the battery and the injection tube, the electrolyte will flow back to the injection valve or spray; the spraying will cause the battery cell to be contaminated, and the electrolyte will flow back to the injection valve to form crystals, which will block the injection valve and affect the battery production efficiency. Utility Model Content

[0003] The utility model aims to solve the problem that after the existing battery is filled with electrolyte, the pressure difference between the inside and outside of the battery causes the electrolyte to flow backward, thus affecting the battery production effect and efficiency.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A novel one-way anti-blowout mechanism is characterized by: comprising an injection pipe connected to the liquid outlet end of a liquid storage mechanism, and an anti-blowout pipe connected to the liquid outlet end of the injection pipe for preventing electrolyte backflow after the injection is completed and the vacuum is broken, an injection valve is connected to the side wall of the injection pipe, and the liquid outlet end of the anti-blowout pipe is provided with an injection nozzle for extending into the injection hole of a battery to inject electrolyte, the injection pipe comprises an injection channel, and the anti-blowout pipe comprises a plurality of anti-blowout injection channels and a plurality of anti-blowout vortex channels that are alternately connected, the first of the anti-blowout injection channels is connected to the injection channel, and the last of the anti-blowout injection channels is connected to the injection nozzle.

[0006] A further improvement is that the blowout prevention vortex channel includes a vortex groove and a guide ramp arranged in an inverted trapezoidal shape, the vortex groove is connected to the upper end of the guide ramp, the lower end of the guide ramp is connected to the upper end of the corresponding blowout prevention injection channel below, the vortex groove is arranged around the lower end of the corresponding blowout prevention injection channel above and is connected thereto, and the highest point of the vortex groove is higher than the lowest point of the connected blowout prevention injection channel.

[0007] A further improvement is that the blowout prevention vortex channel includes a primary blowout prevention vortex channel and a secondary blowout prevention vortex channel, and the primary blowout prevention vortex channel is located below the secondary blowout prevention vortex channel.

[0008] A further improvement is that the liquid outlet end of the liquid storage mechanism is provided with a plurality of shunt liquid outlet pipes connected with the liquid injection pipe.

[0009] A further improvement is that the liquid inlet end of the liquid injection pipe is integrally formed with a first docking flange for docking with the liquid outlet end of the shunt liquid outlet pipe, and the liquid outlet end of the liquid injection pipe is integrally formed with a second docking flange.

[0010] A further improvement is that the liquid inlet end of the blowout preventer is integrally formed with a third docking flange for docking with the second docking flange.

[0011] A further improvement is that a first sealing ring is provided at the joint between the first butt flange and the split liquid outlet pipe, and a second sealing ring is provided at the joint between the second butt flange and the third butt flange.

[0012] A further improvement is that: the first docking flange and the liquid outlet end of the shunt liquid outlet pipe are both provided with corresponding first docking threaded holes, and the first docking flange and the shunt liquid outlet pipe are docked with each other through screws cooperating with the first docking threaded holes.

[0013] A further improvement is that: the second butt flange and the third butt flange are both provided with corresponding second threaded holes, and the second butt flange and the third butt flange are butt-jointed by screws cooperating with the second threaded holes.

[0014] Compared with the existing technology, the above technical solution has the following beneficial effects:

[0015] It can prevent the electrolyte from flowing back to the injection valve to form crystals and block the injection pipeline after the vacuum is broken during injection, and also prevent the electrolyte from splashing out of the injection hole and contaminating the battery cell after the injection nozzle is removed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model when assembled with the liquid storage mechanism;

[0018] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 3 This utility model corresponds to Figure 2 A schematic diagram of a top view structure;

[0020] Figure 4 The utility model Figure 3 The CC section structure diagram in the figure;

[0021] Figure 5 It is a schematic diagram of the flow structure of electrolyte and air when the utility model is working;

[0022] Figure 6 This utility model Figure 5 Enlarged view of part B in .

[0023] Explanation of the accompanying drawings: liquid storage mechanism 1, shunt outlet pipe 11, injection pipe 2, first docking flange 21, second docking flange 22, injection channel 23, first sealing ring 24, second sealing ring 25, injection valve 3, blowout prevention pipe 4, third docking flange 41, blowout prevention injection channel 42, first blowout prevention vortex channel 43, second blowout prevention vortex channel 44, guide ramp 45, vortex groove 46, injection nozzle 5, battery 6. DETAILED DESCRIPTION

[0024] See also Figure 1-Figure 6 As shown, the technical solution adopted in this specific embodiment is: a novel one-way anti-spray mechanism, including an injection pipe 2 connected to the liquid outlet end of the liquid storage mechanism 1, and an anti-spray pipe 4 connected to the liquid outlet end of the injection pipe 2 for preventing the electrolyte from flowing back after the vacuum is broken after the injection is completed, an injection valve 3 is connected to the side wall of the injection pipe 2, and the liquid outlet end of the anti-spray pipe 4 is provided with an injection nozzle 5 for extending into the injection hole of the battery 6 to inject electrolyte, the injection pipe 2 includes an injection channel 23, and the anti-spray pipe 4 includes a plurality of anti-spray injection channels 42 and a plurality of anti-spray vortex channels that are alternately connected, the first of the anti-spray injection channels 42 is connected to the injection channel 23, and the last of the anti-spray injection channels 42 is connected to the injection nozzle 5.

[0025] Among them, the blowout prevention vortex channel includes a vortex groove 46 and a guide ramp 45 arranged in an inverted trapezoidal shape, the vortex groove 46 is connected to the upper end of the guide ramp 45, and the lower end of the guide ramp 45 is connected to the upper end of the corresponding blowout prevention injection channel 42 below, the vortex groove 46 is arranged around the lower end of the corresponding blowout prevention injection channel 42 above and is connected thereto, and the highest point of the vortex groove 46 is higher than the lowest point of the connected blowout prevention injection channel 42.

[0026] The blowout prevention vortex channel includes a primary blowout prevention vortex channel 43 and a secondary blowout prevention vortex channel 44 , and the primary blowout prevention vortex channel 43 is located below the secondary blowout prevention vortex channel 44 .

[0027] The liquid outlet end of the liquid storage mechanism 1 is provided with a plurality of branch liquid outlet pipes 11 connected with the liquid injection pipe 2 .

[0028] The liquid inlet end of the injection tube 2 is integrally formed with a first docking flange 21 for docking with the liquid outlet end of the branch liquid outlet tube 11 , and the liquid outlet end of the injection tube 2 is integrally formed with a second docking flange 22 .

[0029] The liquid inlet end of the lubricating pipe 4 is integrally formed with a third docking flange 41 for docking with the second docking flange 22 .

[0030] A first sealing ring 24 is provided at a butt joint between the first butt flange 21 and the liquid diversion outlet pipe 11 , and a second sealing ring 25 is provided at a butt joint between the second butt flange 22 and the third butt flange 41 .

[0031] The first docking flange 21 and the liquid outlet end of the shunt liquid outlet pipe 11 are both provided with corresponding first docking threaded holes 211 , and the first docking flange 21 and the shunt liquid outlet pipe 11 are docked with each other through screws cooperating with the first docking threaded holes 211 .

[0032] The second butt flange 22 and the third butt flange 41 are both provided with corresponding second threaded holes 221 , and the second butt flange 22 and the third butt flange 41 are butt-jointed with each other through screws cooperating with the second threaded holes 221 .

[0033] The working principle of the utility model is as follows: when in use, the whole mechanism is pressed down, the injection nozzle is inserted into the injection hole and pressed tightly, and then vacuum is drawn to form a vacuum inside the battery core, and then the injection valve is opened, and the electrolyte flows along the direction of the thick solid arrow to inject the electrolyte into the battery core; after the injection is completed, the vacuum is broken, and due to the pressure difference between the inside and outside of the battery core, the electrolyte will flow back along the wall in the direction of the hollow arrow, first flowing back along the wall of the lowest anti-blowout injection channel, and then flowing back along the wall of the guide ramp to the vortex groove, and then flowing back downward along the vortex groove; by arranging a plurality of anti-blowout vortex Channel, if the electrolyte overflows at the vortex groove of the lowest anti-blowout vortex channel, the overflowing electrolyte will flow back upward to the upper anti-blowout vortex channel accordingly, flow back to the corresponding upper vortex groove and then flow back. The setting of multiple anti-blowout vortex channels ensures the anti-backflow effect; the air moves in the direction of the thin solid arrow; when the pressure difference inside and outside the battery cell is consistent, the electrolyte will flow back into the battery cell from top to bottom due to gravity; in this way, it is prevented that the electrolyte flows to the injection valve to form crystals to block the injection pipeline, and at the same time, it is prevented that the electrolyte splashes out of the injection hole and pollutes the battery cell after the injection nozzle is removed.

[0034] The above shows and describes the basic principle and main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents. Anything not described in detail in the utility model is a well-known technology of those skilled in the art.

Claims

1. A novel one-way anti-spray mechanism, characterized in that: The invention relates to a liquid injection pipe connected to the liquid outlet end of the liquid storage mechanism, and a blowout preventer connected to the liquid outlet end of the liquid injection pipe for preventing the electrolyte from flowing back after the vacuum is broken after the liquid injection is completed. The side wall of the liquid injection pipe is connected with a liquid injection valve, and the liquid outlet end of the blowout preventer is provided with a liquid injection nozzle for extending into the liquid injection hole of the battery to inject electrolyte. The liquid injection pipe comprises a liquid injection channel, and the blowout preventer comprises a plurality of blowout preventer injection channels and a plurality of blowout preventer vortex channels which are alternately connected. The first blowout preventer injection channel is connected to the liquid injection channel, and the last blowout preventer injection channel is connected to the liquid injection nozzle. The blowout preventer vortex channel comprises a vortex groove and a guide ramp arranged in an inverted trapezoidal shape. The vortex groove is connected to the upper end of the guide ramp, and the lower end of the guide ramp is connected to the upper end of the corresponding blowout preventer injection channel below. The vortex groove is arranged around the lower end of the corresponding blowout preventer injection channel above and is connected thereto, and the highest point of the vortex groove is higher than the lowest point of the connected blowout preventer injection channel.

2. A novel one-way anti-spray mechanism according to claim 1, characterized in that: The blowout prevention vortex channel includes a primary blowout prevention vortex channel and a secondary blowout prevention vortex channel, and the primary blowout prevention vortex channel is located below the secondary blowout prevention vortex channel.

3. A novel one-way anti-spray mechanism according to claim 1, characterized in that: The liquid outlet end of the liquid storage mechanism is provided with a plurality of shunt liquid outlet pipes which are connected with the liquid injection pipe.

4. A novel one-way anti-spray mechanism according to claim 3, characterized in that: The liquid inlet end of the liquid injection pipe is integrally formed with a first docking flange for docking with the liquid outlet end of the shunt liquid outlet pipe, and the liquid outlet end of the liquid injection pipe is integrally formed with a second docking flange.

5. A novel one-way anti-spray mechanism according to claim 4, characterized in that: The liquid inlet end of the blowout preventer is integrally formed with a third docking flange for docking with the second docking flange.

6. A novel one-way anti-spray mechanism according to claim 5, characterized in that: A first sealing ring is provided at a butt joint between the first butt flange and the split liquid outlet pipe, and a second sealing ring is provided at a butt joint between the second butt flange and the third butt flange.

7. The novel one-way anti-spray mechanism according to claim 5 is characterized in that: The first docking flange and the liquid outlet end of the shunt liquid outlet pipe are both provided with corresponding first docking threaded holes, and the first docking flange and the shunt liquid outlet pipe are docked with each other through screws cooperating with the first docking threaded holes.

8. The novel one-way anti-spray mechanism according to claim 5 is characterized in that: The second butt joint flange and the third butt joint flange are both provided with corresponding second threaded holes, and the second butt joint flange and the third butt joint flange are butt jointed with each other through screws cooperating with the second threaded holes.

Images