Negative pressure cup assembly

Abstract

The negative pressure cup assembly comprises a negative pressure balloon, an exhaust hose and a liquid inlet hose, the negative pressure balloon is provided with a containing cavity, and a first opening and a second opening are formed in the two ends of the containing cavity respectively; the first opening of the negative pressure balloon is sleeved with the exhaust hose, and the exhaust hose communicates with the first opening and is used for communicating with an air pressure source; the liquid inlet hose sleeves the second opening of the negative pressure balloon and is communicated with the second opening; the first end of the negative-pressure suction nozzle rod is communicated with the liquid inlet hose, and the second end of the negative-pressure suction nozzle rod is communicated with the suction nozzle; and the negative pressure balloon is integrally formed by adopting a blow molding process. According to the technical scheme, the negative pressure cup assembly is simple in structure, simple in process and low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a negative pressure cup assembly. Background Art

[0002] During the manufacturing process of batteries, they need to be charged. However, the heat generated during the charging process will increase the temperature of the electrolyte, and the expanded electrolyte will emerge from the filling port. In order to prevent the overflowed electrolyte from spreading to the surface of the battery shell, a negative pressure cup is often used to collect the overflowed electrolyte.

[0003] However, existing vacuum cups are split components, consisting of a metal vacuum nozzle stem, a pipe joint, and a plastic vacuum cup body and lid. To integrate these four components, the pipe joint and lid must first be injection molded together, followed by the vacuum nozzle stem and cup body. Finally, these two components are sealed and connected together using heat-seal or ultrasonic welding. This results in complex manufacturing processes and high costs. Utility Model Content

[0004] The main purpose of the utility model is to provide a negative pressure cup assembly, aiming to solve the problems of multiple production processes, complex processes and high costs of negative pressure cups.

[0005] To achieve the above-mentioned purpose, the negative pressure cup assembly proposed in the present invention includes:

[0006] A negative pressure balloon having a receiving cavity, with a first opening and a second opening respectively provided at both ends of the receiving cavity;

[0007] An exhaust hose, the exhaust hose is sleeved on the first opening of the negative pressure balloon, the exhaust hose is connected to the first opening, and the exhaust hose is used to connect to the air pressure source;

[0008] a liquid inlet hose, the liquid inlet hose being sleeved on the second opening of the negative pressure balloon and connected to the second opening;

[0009] A negative pressure nozzle rod, wherein the first end of the negative pressure nozzle rod is connected to the liquid inlet hose, and the second end of the negative pressure nozzle rod is used to connect to the nozzle;

[0010] The negative pressure balloon is integrally formed by a blow molding process.

[0011] Furthermore, the two ends of the negative pressure balloon respectively have a first air nozzle and a second air nozzle, the outer peripheral wall of the first air nozzle is provided with a plurality of first annular bosses, the plurality of first annular bosses are arranged at intervals, and the first annular bosses can be in frictional contact with the exhaust hose, and the outer peripheral wall of the second air nozzle is provided with a plurality of second annular bosses, the plurality of second annular bosses are arranged at intervals, and the second annular bosses can be in frictional contact with the liquid inlet hose.

[0012] Furthermore, in a direction from the first opening toward the second opening, a height of the first annular boss on the first gas nozzle gradually increases.

[0013] Furthermore, in a direction from the second opening toward the first opening, a height of the second annular boss on the second gas nozzle gradually increases.

[0014] Furthermore, the cross section of the negative pressure balloon is circular, and the negative pressure balloon has a symmetrical structure;

[0015] The radii of the cross sections at the first air nozzle and the second air nozzle are both smaller than the radius of the cross section of the middle portion of the negative pressure balloon.

[0016] Furthermore, a plurality of mounting blocks are provided on the outer wall surface of the negative pressure balloon, and the mounting blocks are used to mount the negative pressure balloon on external equipment.

[0017] Furthermore, the clamping slot is open in a direction away from the negative pressure balloon, and the clamping slot is used for allowing a bolt to pass through to fasten the negative pressure balloon to an external device.

[0018] Furthermore, the negative pressure cup assembly also includes a negative pressure cup mounting seat, and the negative pressure nozzle rod can be movably inserted into the negative pressure cup mounting seat. An installation gap is formed between the negative pressure cup mounting seat and the negative pressure nozzle rod, and an elastic member is provided on the outer periphery of the negative pressure nozzle rod, and the elastic member is arranged at the installation gap.

[0019] Furthermore, the elastic member is a spring.

[0020] Furthermore, the negative pressure cup assembly also includes a mounting nut, which is threadedly connected to the negative pressure nozzle rod and can clamp the end of the liquid inlet hose to the first end of the negative pressure nozzle rod.

[0021] Compared with the existing technology, the negative pressure balloon in the negative pressure cup assembly of the technical solution of the utility model is formed in one piece by a blow molding process, and the first opening and the second opening of the negative pressure balloon are respectively connected by an exhaust hose and a liquid inlet hose, and the exhaust hose and the liquid inlet hose are used to connect the suction nozzle and the external air pressure source, replacing the traditional split setting of the negative pressure cup and the complex process of sealing each part by hot melting or ultrasonic welding. The negative pressure cup assembly of the utility model greatly simplifies the production process, has a simple structure, low production cost, and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of the negative pressure cup assembly of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the negative pressure balloon in the negative pressure cup assembly of the present invention;

[0024] Figure 3 This is an exploded view of the negative pressure cup assembly of the present invention.

[0025] Explanation of the accompanying drawings: 100, negative pressure balloon; 110, first opening; 120, second opening; 200, exhaust hose; 300, liquid inlet hose; 400, suction nozzle; 130, first air nozzle; 140, second air nozzle; 131, first annular boss; 141, second annular boss; 500, mounting block; 510, slot; 600, negative pressure suction nozzle rod; 700, negative pressure cup mounting seat; 800, mounting nut; 900, elastic member. DETAILED DESCRIPTION

[0026] 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.

[0027] See also Figures 1 to 3 , the utility model proposes a negative pressure cup assembly.

[0028] The negative pressure cup assembly includes a negative pressure balloon 100, an exhaust hose 200 and a liquid inlet hose 300. The negative pressure balloon 100 has a accommodating cavity, and the two ends of the accommodating cavity are respectively provided with a first opening 110 and a second opening 120; the exhaust hose 200 is sleeved on the first opening 110 of the negative pressure balloon 100, and the exhaust hose 200 is connected to the first opening 110, and the exhaust hose 200 is used to connect to the air pressure source; the liquid inlet hose 300 is sleeved on the second opening 120 of the negative pressure balloon 100, and the liquid inlet hose 300 is connected to the second opening 120; the first end of the negative pressure suction nozzle 400 rod is connected to the liquid inlet hose 300, and the second end of the negative pressure suction nozzle 400 rod is used to connect to the suction nozzle 400; the negative pressure balloon 100 is integrally formed by a blow molding process.

[0029] Specifically, the air pressure source includes a positive pressure line and a negative pressure line. The positive pressure line is connected to the positive pressure source, and the negative pressure line is connected to the negative pressure source. The positive pressure line and the negative pressure line are switched by a solenoid valve to achieve the purpose of sucking electrolyte or allowing the electrolyte to flow back to the battery cell. After entering the negative pressure formation process, the solenoid valve closes the positive pressure line and starts the negative pressure source, providing negative pressure to the negative pressure balloon 100 through the exhaust hose 200, and part of the electrolyte inside the battery cell is drawn into the negative pressure balloon 100 along with the gas through the suction nozzle 400 rod and the liquid inlet hose 300. The electrolyte will be retained in the negative pressure balloon 100. After the negative pressure formation process is completed, the negative pressure source is closed, the solenoid valve closes the negative pressure line and opens the positive pressure line at the same time, and the positive pressure source applies positive pressure to the exhaust hose 200 and the negative pressure balloon 100. The electrolyte retained in the negative pressure balloon 100 is blown into the battery cell by the positive pressure, thereby achieving the reflux of the electrolyte.

[0030] The negative pressure balloon 100 is made of plastic material, which helps to prevent corrosion by electrolyte. The liquid inlet hose 300 and the exhaust hose 200 are made of soft materials, which can ensure the airtightness of the connection to the negative pressure balloon 100 and improve the convenience of connecting the liquid inlet hose 300 and the exhaust hose 200 to the negative pressure balloon 100. In this way, the negative pressure balloon 100 in the negative pressure cup assembly of the technical solution of the present invention is formed in one piece by a blow molding process, and the first opening 110 and the second opening 120 of the negative pressure balloon 100 are respectively connected by the exhaust hose 200 and the liquid inlet hose 300. The suction nozzle 400 and the external air pressure source are connected by the exhaust hose 200 and the liquid inlet hose 300, replacing the traditional split setting of the negative pressure cup and the complex process of sealing each part by hot melting or ultrasonic welding. The negative pressure cup assembly of the present invention greatly simplifies the production process, has a simple structure, low production cost, and improves production efficiency.

[0031] See also Figures 1 to 3Furthermore, the negative pressure balloon 100 has a first air nozzle 130 and a second air nozzle 140 at each end. The outer circumferential wall of the first air nozzle 130 is provided with a plurality of first annular bosses 131, which are arranged at intervals and can frictionally contact the exhaust hose 200. The outer circumferential wall of the second air nozzle 140 is provided with a plurality of second annular bosses 141, which are arranged at intervals and can frictionally contact the liquid inlet hose 300. Specifically, the provision of the plurality of first annular bosses 131 increases the friction between the first air nozzle 130 and the exhaust hose 200, thereby tightening the connection between the exhaust hose 200 and the first air nozzle 130 and improving the airtightness between the two. Similarly, the provision of the plurality of second annular bosses 141 increases the friction between the second air nozzle 140 and the liquid inlet hose 300, thereby tightening the connection between the liquid inlet hose 300 and the second air nozzle 140 and improving the airtightness between the two. The cross-sections of the first annular boss 131 and the second annular boss 141 can be circular, serrated or in other shapes, as long as the connection stability and sealing between the first annular boss 131 and the exhaust hose 200 and the connection stability and sealing between the second annular boss 141 and the liquid inlet hose 300 are ensured.

[0032] See also Figures 1 to 3 Furthermore, the height of the first annular projection 131 on the first gas nozzle 130 gradually increases from the first opening 110 toward the second opening 120. Thus, when the exhaust hose 200 is connected to the first gas nozzle 130, the exhaust hose 200 can follow the guidance of the first annular projection 131 on the first gas nozzle 130 and connect to the negative pressure balloon 100. Furthermore, the shape of the first annular projection 131 enhances the friction between the exhaust hose 200 and the negative pressure balloon 100, thereby enhancing the sealing effect of the connection between the exhaust hose 200 and the negative pressure balloon 100.

[0033] See also Figures 1 to 3 Furthermore, the height of the second annular boss 141 on the second gas nozzle 140 gradually increases from the second opening 120 toward the first opening 110. Thus, when the liquid inlet hose 300 is connected to the second gas nozzle 140, the liquid inlet hose 300 can follow the guidance of the second annular boss 141 on the second gas nozzle 140 and connect to the negative pressure balloon 100. At the same time, the second annular boss 141 enhances the sealing effect between the liquid inlet hose 300 and the negative pressure balloon 100.

[0034] See also Figures 1 to 3Furthermore, the cross-section of the negative pressure balloon 100 is circular and symmetrical; the radius of the cross-section at the first air nozzle 130 and the second air nozzle 140 is smaller than the radius of the cross-section at the middle portion of the negative pressure balloon 100. The shape of the negative pressure balloon 100 in the present invention can be composed of a cylinder and two cone-like shapes spliced at the top and bottom of the cylinder. The negative pressure balloon 100 is a hollow structure and is manufactured using a blow molding process, which simplifies the production process of the negative pressure cup and reduces the production cost of the negative pressure cup assembly.

[0035] See also Figures 1 to 3 Furthermore, a plurality of mounting blocks 500 are provided on the outer wall of the negative pressure balloon 100. The mounting blocks 500 are used to mount the negative pressure balloon 100 on an external device. Specifically, the mounting blocks 500 are used to mount the negative pressure balloon 100 on an external device, so that the negative pressure balloon 100 can be fixed in a corresponding position and maintain the stability of the electrolyte flow inside the battery.

[0036] See also Figures 1 to 3 Furthermore, the slot 510 is open and facing away from the negative pressure balloon 100. The slot 510 is used to allow a bolt to penetrate and secure the negative pressure balloon 100 to an external device. When installing the negative pressure balloon 100 on an external device, a bolt can be inserted into a screw hole on the external device. The nut of the bolt passes through the slot 510 and presses against the mounting block 500, securing the mounting block 500. This allows the negative pressure balloon 100 to be installed on the external device, resulting in a simple structure and stable installation.

[0037] See also Figure 1 and Figure 3 Furthermore, the negative pressure cup assembly also includes a negative pressure cup mounting seat 700, and the negative pressure suction nozzle 400 rod can be movably inserted into the negative pressure cup mounting seat 700. An installation gap is formed between the negative pressure cup mounting seat 700 and the negative pressure suction nozzle 400 rod. The outer periphery of the negative pressure suction nozzle 400 rod is provided with an elastic member 900, and the elastic member 900 is provided at the installation gap. Specifically, when the negative pressure cup assembly is in use, the negative pressure cup assembly will be driven downward by the drive device on the needle bed, so that the suction nozzle 400 on the negative pressure cup assembly can be pressed at the battery's liquid filling port. By providing the elastic member 900, when the suction nozzle 400 is pressed at the battery's liquid filling port, it can play a buffering role and enhance the stability of the suction nozzle 400 on the negative pressure cup assembly pressed at the battery's liquid filling port. The elastic member 900 can be adopted in a variety of ways, as long as the elastic member 900 can enhance the stability of the suction nozzle 400 pressed at the battery's liquid filling port when the suction nozzle 400 is pressed at the battery's liquid filling port.

[0038] See also Figure 1 and Figure 3Furthermore, the elastic member 900 is a spring. The spring is directly mounted on the outer circumference of the negative pressure nozzle 400 rod. When the negative pressure nozzle 400 rod is pressed against the battery filling port, the spring elastically deforms and presses the nozzle 400, so that the nozzle 400 is stably pressed against the battery filling port.

[0039] See also Figure 1 and Figure 3 Furthermore, the negative pressure cup assembly also includes a mounting nut 800, which is threaded onto the rod of the negative pressure nozzle 400 and can clamp the end of the liquid inlet hose 300 to the first end of the rod of the negative pressure nozzle 400. By rotating the mounting nut 800 to the rod of the nozzle 400, the liquid inlet hose 300 is clamped between the inner hole wall of the mounting nut 800 and the rod of the negative pressure nozzle 400, thereby enhancing the stability of the connection between the liquid inlet hose 300 and the rod of the negative pressure nozzle 400.

[0040] The above are merely optional embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made by utilizing the contents of the present invention specification and drawings under the practical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A negative pressure cup assembly, characterized in that: The negative pressure cup assembly includes: A negative pressure balloon having a receiving cavity, with a first opening and a second opening respectively provided at both ends of the receiving cavity; An exhaust hose, the exhaust hose is sleeved on the first opening of the negative pressure balloon, the exhaust hose is connected to the first opening, and the exhaust hose is used to connect to the air pressure source; a liquid inlet hose, the liquid inlet hose being sleeved on the second opening of the negative pressure balloon and connected to the second opening; A negative pressure nozzle rod, wherein the first end of the negative pressure nozzle rod is connected to the liquid inlet hose, and the second end of the negative pressure nozzle rod is used to connect to the nozzle; The negative pressure balloon is integrally formed by a blow molding process.

2. The negative pressure cup assembly according to claim 1, characterized in that: The two ends of the negative pressure balloon are respectively provided with a first air nozzle and a second air nozzle. A plurality of first annular bosses are provided on the outer peripheral wall of the first air nozzle, and the plurality of first annular bosses are arranged at intervals. The first annular bosses can be in frictional contact with the exhaust hose. A plurality of second annular bosses are provided on the outer peripheral wall of the second air nozzle, and the plurality of second annular bosses are arranged at intervals. The second annular bosses can be in frictional contact with the liquid inlet hose.

3. The negative pressure cup assembly according to claim 2, wherein: In a direction from the first opening toward the second opening, a height of the first annular boss on the first gas nozzle gradually increases.

4. The negative pressure cup assembly according to claim 2, wherein: In a direction from the second opening toward the first opening, a height of the second annular boss on the second gas nozzle gradually increases.

5. The negative pressure cup assembly according to claim 2, wherein: The cross section of the negative pressure balloon is circular, and the negative pressure balloon has a symmetrical structure; The radii of the cross sections at the first air nozzle and the second air nozzle are both smaller than the radius of the cross section of the middle portion of the negative pressure balloon.

6. The negative pressure cup assembly according to claim 5, characterized in that: A plurality of mounting blocks are provided on the outer wall surface of the negative pressure balloon, and the mounting blocks are used to mount the negative pressure balloon on external equipment.

7. The negative pressure cup assembly according to claim 6, wherein: The mounting block is provided with a slot, which is open in a direction away from the negative pressure balloon. The slot is used for a bolt to pass through to fasten the negative pressure balloon to an external device.

8. The negative pressure cup assembly according to claim 1, wherein: The negative pressure cup assembly also includes a negative pressure cup mounting seat, and the negative pressure nozzle rod can be movably inserted into the negative pressure cup mounting seat. An installation gap is formed between the negative pressure cup mounting seat and the negative pressure nozzle rod. An elastic member is sleeved on the outer periphery of the negative pressure nozzle rod, and the elastic member is arranged at the installation gap.

9. The negative pressure cup assembly according to claim 8, wherein: The elastic member is a spring.

10. The negative pressure cup assembly according to claim 8, wherein: The negative pressure cup assembly further comprises a mounting nut, which is threadedly connected to the negative pressure nozzle rod and can clamp the end of the liquid inlet hose to the first end of the negative pressure nozzle rod.

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