Liquid injection nozzle structure capable of efficiently injecting liquid

Abstract

The utility model discloses a liquid injection nozzle structure capable of efficiently injecting liquid. The liquid injection nozzle structure comprises a pipe body, a liquid injection nozzle body, a nozzle part and a liquid separation plate, a liquid injection nozzle body is coaxially and vertically arranged on the lower surface of a vertically arranged pipe body, a liquid injection channel is vertically formed in the middle of the upper surface of the pipe body in a penetrating mode, and a pressure relief channel is vertically formed in the upper surface of the pipe body relative to the right side of the liquid injection channel in a penetrating mode. A liquid partition plate is arranged at the right position of the middle in the liquid injection nozzle body, and the interior of the liquid injection nozzle body is divided into a liquid injection cavity and a pressure relief cavity in the left-right direction through the liquid partition plate; the liquid injection channel communicates with the liquid injection cavity, the pressure relief channel communicates with the pressure relief cavity, and a plurality of exhaust holes are sequentially and vertically embedded in the position, close to the top end, of the left side face of the liquid partition plate at intervals in the length direction of the liquid partition plate in a penetrating mode. According to the utility model, the positive pressure and the internal pressure of the battery are released, so that the internal space of the battery is prevented from being occupied, more electrolyte can be injected into the battery within limited process time, and the electrolyte injection efficiency and the electrolyte injection effect are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium battery production and manufacturing technical field, concretely relates to a liquid injection nozzle structure of high -efficient liquid injection. BACKGROUND

[0002] The battery is generally composed of positive pole, negative pole and electrolyte. Among them, the electrolyte undertakes the role of transmitting ion between positive pole and negative pole, and it has important influence on the capacity, working temperature range, cycle performance and safety performance of the battery. Therefore, it is particularly important to inject electrolyte into the battery during the preparation process of the battery.

[0003] When the electrolyte flows into the liquid injection nozzle through the pipeline, the electrolyte needs to be vacuumized in the battery before injection to provide space for the inflow of electrolyte by vacuumizing the inside of the shell from the battery core. However, the existing liquid injection nozzle structure, when vacuumizing is completed and positive pressure is applied to the liquid, the electrolyte is squeezed into the battery by positive pressure. In this process, the positive pressure inevitably enters the shell, occupies the limited space in the shell, makes the internal pressure consistent with the external pressure, and further causes the electrolyte to be unable to continuously enter the battery, thereby affecting the liquid injection efficiency. Therefore, the above problems need to be solved. SUMMARY

[0004] The technical problem to be solved by the utility model is to provide a liquid injection nozzle structure with high-efficiency liquid injection. Through the cooperation of the liquid separation plate, the exhaust hole, the pressure relief port and the pressure relief pipe, the positive pressure and the internal pressure of the battery are released, thereby avoiding the occupation of the internal space of the battery, allowing more electrolyte to be injected into the battery within a limited process time, and improving the liquid injection efficiency and effect.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme: the utility model discloses a liquid injection nozzle structure with high-efficiency liquid injection, which has the following innovative points: a pipe body, a liquid injection nozzle body, a nozzle part and a liquid separation plate are included. The pipe body is a vertically arranged cylindrical structure, and a hollow cylindrical liquid injection nozzle body is coaxially and vertically aligned on the lower surface of the pipe body, and the two are integrally formed. A liquid injection channel is vertically and penetratively arranged in the middle of the upper surface of the pipe body, and a pressure relief channel is vertically and penetratively arranged on the right side of the upper surface of the pipe body relative to the liquid injection channel. A liquid separation plate is vertically and longitudinally arranged in the middle of the inside of the liquid injection nozzle body, and the inside of the liquid injection nozzle body is divided into a liquid injection cavity and a pressure relief cavity by the liquid separation plate. The liquid injection channel is in sealed communication with the liquid injection cavity, and the pressure relief channel is in sealed communication with the pressure relief cavity. A plurality of exhaust holes are vertically and penetratively arranged in the left side of the liquid separation plate along the length direction of the liquid separation plate, and the gas in the liquid injection cavity is discharged into the pressure relief cavity through the exhaust holes, and then discharged through the pressure relief channel.

[0006] Preferably, the diameter of the tube body is consistent with the outer diameter of the liquid injection nozzle body, and the two are arranged in alignment and integrally formed.

[0007] Preferably, the liquid injection channel and the pressure relief channel are arranged in parallel and are ensured not to be connected to each other.

[0008] Preferably, a funnel-shaped nozzle is coaxially embedded in the lower surface of the liquid injection nozzle body, the upper end of the nozzle is a large-diameter end matched with the interior of the liquid injection nozzle body, and is in sealed communication with the interior of the liquid injection nozzle body and integrally formed; the lower end of the nozzle is a small-diameter end, and extends vertically downward out of the lower surface of the liquid injection nozzle body, and then the liquid injection is performed through the nozzle.

[0009] Preferably, the large-diameter end face of the nozzle is arranged flush with the inner bottom surface of the liquid injection nozzle body, and the outer diameter of the large-diameter end is consistent with the inner diameter of the liquid injection nozzle body.

[0010] Preferably, the upper end face of the liquid separation plate is sealingly and fixedly connected to the corresponding position of the inner top surface of the liquid injection nozzle body, and the front and rear end faces thereof are respectively sealingly and fixedly connected to the corresponding positions of the inner circumferential wall of the liquid injection nozzle body, and the lower end face thereof is sealingly and fixedly connected to the corresponding position of the inner conical surface of the nozzle, thereby ensuring that the liquid injection cavity and the pressure relief cavity are only connected through the exhaust holes.

[0011] Preferably, a one-way valve is further connected in each exhaust hole of the liquid separation plate, and the one-way valve ensures that the gas flows from the liquid injection cavity to the pressure relief cavity.

[0012] Preferably, a pressure relief port is vertically embedded in the upper surface of the liquid injection nozzle body relative to the position of the pressure relief channel, and the pressure relief port is coaxially arranged with the pressure relief channel, the diameter of the pressure relief port is consistent with the diameter of the pressure relief channel, and the lower end thereof extends vertically out of the inner top surface of the liquid injection nozzle body and is in communication with the pressure relief cavity, thereby sequentially discharging the gas in the pressure relief cavity through the pressure relief port and the pressure relief channel.

[0013] Preferably, a liquid injection tube is vertically embedded in the upper surface of the liquid injection nozzle body relative to the position of the liquid injection channel, the liquid injection tube is coaxially arranged with the liquid injection channel, and the inner diameter thereof is consistent with the diameter of the liquid injection channel; the upper end face of the liquid injection tube is arranged flush with the upper surface of the liquid injection nozzle body, and the lower end thereof extends vertically downward into the liquid injection cavity, thereby sequentially flowing the electrolyte into the liquid injection cavity through the liquid injection channel and the liquid injection tube.

[0014] Preferably, the horizontal plane where the lower end face of the liquid injection tube is located is below each of the exhaust holes and above the inner bottom surface of the liquid injection nozzle body, thereby avoiding the phenomenon of the electrolyte flowing into the exhaust holes through the liquid injection tube.

[0015] The utility model discloses a beneficial effect:

[0016] (1) the utility model discloses a cooperation of the liquid isolation board, the exhaust hole, the pressure relief port and the pressure relief pipe, makes the positive pressure and the battery internal pressure has been released to avoid the battery internal space to be occupied, makes the battery inject more electrolyte in the limited process time, improves the injection efficiency and injection effect;

[0017] (2) the utility model discloses a one-way valve can control the gas flow direction to prevent the phenomenon of reverse suction and external pressure into the battery. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the following will briefly introduce the drawing needed to be used in the embodiment, and obviously, the drawing in the following description is only some embodiments in the utility model, and for the ordinary skilled person in the art, other drawings can also be obtained according to these drawings without creating labor.

[0019] Figure 1 It is the structure diagram of the injection nozzle structure of the utility model of high -efficient injection.

[0020] Figure 2 It is the structure diagram of the injection nozzle body of the utility model.

[0021] Figure 3 It is the internal structure section view of Figure 2 .

[0022] Wherein, 1 - pipe body, 2 - injection channel, 3 - pressure relief channel, 4 - injection nozzle body, 5 - liquid isolation board, 6 - injection pipe, 7 - pressure relief port, 8 - exhaust hole, 9 - injection cavity, 10 - pressure relief cavity, 11 - nozzle part. DETAILED DESCRIPTION

[0023] The technical scheme of the utility model will be clearly and completely described below through specific embodiments.

[0024] The injection nozzle structure of the utility model of high -efficient injection, including pipe body 1, injection nozzle body 4, nozzle part 11 and liquid isolation board 5, the specific structure is as shown in Figures 1-3 , pipe body 1 is vertically arranged cylindrical structure, and hollow cylindrical injection nozzle body 4 is vertically aligned on its lower surface coaxially, and the two are integrally formed, the diameter of pipe body 1 is consistent with the outer diameter of injection nozzle body 4, and the two are aligned and integrally formed, injection channel 2 is vertically penetrated and set in the middle position of the upper surface of pipe body 1, and pressure relief channel 3 is vertically penetrated and set on the upper surface relative to the right side of injection channel 2, injection channel 2 and pressure relief channel 3 are parallelly arranged, and ensure that the two are not communicated.

[0025] The utility model discloses still be provided with the liquid separation board 5 that matches with in the inside intermediate right position of the liquid injection nozzle body 4 vertically longitudinally, and the inside left and right of the liquid injection nozzle body 4 is divided into the liquid injection cavity 9 and the pressure relief chamber 10 that do not communicate with each other through the liquid separation board 5, as shown in the figure, Figures 1-3 The lower end of the nozzle part 11 is a small diameter end, and extends vertically downward out of the lower surface of the liquid injection nozzle body 4, and then the liquid injection is carried out through the nozzle part 11. The large diameter end face of the nozzle part 11 is flush with the inner bottom surface of the liquid injection nozzle body 4, and the outer diameter of the large diameter end is consistent with the inner diameter of the liquid injection nozzle body 4.

[0026] As shown in the figure, Figures 1-3 The upper end face of the liquid separation board 5 is sealingly and fixedly connected to the corresponding position of the inner top surface of the liquid injection nozzle body 4, and the front and rear end faces are respectively sealingly and fixedly connected to the corresponding positions of the inner circumferential wall of the liquid nozzle body, and the lower end face is sealingly and fixedly connected to the corresponding position of the inner conical surface of the nozzle part 11, thereby ensuring that the liquid injection cavity 9 and the pressure relief chamber 10 are only communicated through the exhaust holes 8.

[0027] As shown in the figure, Figures 1-3 The upper surface of the liquid injection nozzle body 4 is vertically embedded with a pressure relief port 7 at a position corresponding to the pressure relief channel 3, and the pressure relief port 7 is coaxially arranged with the pressure relief channel 3. The diameter of the pressure relief port 7 is consistent with the diameter of the pressure relief channel 3, and the lower end of the pressure relief port 7 extends vertically out of the inner top surface of the liquid injection nozzle body 4 and is in communication with the pressure relief chamber 10, thereby discharging the gas in the pressure relief chamber 10 through the pressure relief port 7 and the pressure relief channel 3 in sequence.

[0028] The utility model discloses still be provided with the liquid injection pipe 6 that is vertically embedded at the position corresponding to the liquid injection channel 2 on the upper surface of the liquid injection nozzle body 4, as shown in the figure, Figures 1-3 The liquid injection pipe 6 is coaxially arranged with the liquid injection channel 2, and the inner diameter of the liquid injection pipe 6 is consistent with the diameter of the liquid injection channel 2. The upper end face of the liquid injection pipe 6 is flush with the upper surface of the liquid injection nozzle body 4, and the lower end extends vertically downward into the liquid injection cavity 9, thereby causing the electrolyte to flow into the liquid injection cavity 9 through the liquid injection channel 2 and the liquid injection pipe 6 in sequence.

[0029] The utility model discloses still be provided with a plurality of exhaust holes 8 that are vertically embedded and pass through in sequence and at intervals along the length direction at the left side face of the liquid separation board 5, as shown in the figure, Figures 1-3 A one-way valve is further arranged in each exhaust hole 8 of the liquid separation board 5, and the one-way valve ensures that the gas flows from the liquid injection cavity 9 to the pressure relief chamber 10. The horizontal plane where the lower end face of the liquid injection pipe 6 is located is below each exhaust hole 8 and above the inner bottom surface of the liquid injection nozzle body 4, thereby avoiding the phenomenon that the electrolyte flowing through the liquid injection pipe 6 flows into the exhaust hole 8.

[0030] The working principle of the utility model is: the electrolyte flows into the liquid injection cavity 9 through the liquid injection channel 2, with the outside pressure increasing continuously, the electrolyte is extruded in the limited space of the liquid injection cavity 9 and flows into the battery rapidly through the mouth part 11; in this process, the gas is discharged through the cooperation of the exhaust hole 8, the pressure relief port 7 and the pressure relief pipe, so that the positive pressure and the internal pressure of the battery are released.

[0031] The utility model discloses the beneficial effect:

[0032] (1) the utility model discloses the cooperation of the liquid isolation plate 5, exhaust hole 8, pressure relief port 7 and pressure relief pipe makes the positive pressure and the internal pressure of the battery be released, thereby avoiding the internal space of the battery being occupied, make the battery can inject more electrolyte in the limited process time, improve the liquid injection efficiency and liquid injection effect;

[0033] (2) the utility model discloses the cooperation of the liquid isolation plate 5, exhaust hole 8, pressure relief port 7 and pressure relief pipe makes the positive pressure and the internal pressure of the battery be released, thereby avoiding the internal space of the battery being occupied, make the battery can inject more electrolyte in the limited process time, improve the liquid injection efficiency and liquid injection effect;

[0034] The above-mentioned embodiment is only the preferred implementation of the utility model and is described, and does not limit the design concept and range of the utility model, and under the premise that the design concept of the utility model is not departed from, the various modifications and improvements of the technical scheme of the utility model made by the ordinary engineering technicians in the art should fall into the protection range of the utility model, and the technical content of the utility model is all recorded in the technical requirements book.

Claims

1. A liquid injection nozzle structure capable of efficient liquid injection, characterized by: The utility model provides a liquid injection nozzle, which comprises a pipe body, a liquid injection nozzle body, a nozzle and a liquid separation plate.

2. The liquid injection nozzle structure according to claim 1, wherein: The diameter of the pipe body is consistent with the outer diameter of the liquid injection nozzle body, and the pipe body and the liquid injection nozzle body are coaxially arranged and integrally formed.

3. The liquid injection nozzle structure according to claim 1, wherein: The liquid injection channel and the pressure relief channel are arranged in parallel and are not connected to each other.

4. The liquid injection nozzle structure according to claim 1, wherein: The lower end of the nozzle is a small-diameter end, and the lower end of the nozzle extends vertically downward out of the lower surface of the liquid injection nozzle body, so that the electrolyte is injected through the nozzle.

5. The liquid injection nozzle structure according to claim 4, wherein: The large-diameter end face of the nozzle is flush with the inner bottom surface of the liquid injection nozzle body, and the outer diameter of the large-diameter end of the nozzle is consistent with the inner diameter of the liquid injection nozzle body.

6. The liquid injection nozzle structure according to claim 5, wherein: The upper end face of the liquid separation plate is sealingly and fixedly connected to the corresponding position of the inner top surface of the liquid injection nozzle body, and the front and rear end faces of the liquid separation plate are respectively sealingly and fixedly connected to the corresponding positions of the inner circumferential wall of the liquid injection nozzle body.

7. The liquid injection nozzle structure according to claim 1, wherein: A one-way valve is arranged in each of the exhaust holes of the liquid separation plate, and the one-way valve ensures that the gas flows from the liquid injection cavity to the pressure relief cavity.

8. The liquid injection nozzle structure according to claim 4, wherein: A pressure relief port is coaxially and vertically embedded in the upper surface of the liquid injection nozzle body relative to the position of the pressure relief channel, and the pressure relief port is coaxially arranged with the pressure relief channel.

9. The liquid injection nozzle structure according to claim 8, wherein: A liquid injection tube is coaxially and vertically embedded in the upper surface of the liquid injection nozzle body relative to the position of the liquid injection channel, and the liquid injection tube is coaxially arranged with the liquid injection channel and has an inner diameter consistent with the diameter of the liquid injection channel. The upper end face of the liquid injection tube is flush with the upper surface of the liquid injection nozzle body, and the lower end of the liquid injection tube extends vertically downward into the liquid injection cavity, so that the electrolyte flows into the liquid injection cavity through the liquid injection channel and the liquid injection tube.

10. The liquid injection nozzle structure according to claim 9, wherein: The lower end surface of the liquid injection pipe is located below each exhaust hole and above the inner bottom surface of the liquid injection nozzle body, thereby preventing the electrolyte flowing through the liquid injection pipe from flowing into the exhaust hole.

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