Negative pressure nozzle device

Abstract

The present invention relates to a negative pressure suction nozzle device, comprising: a slide module, one end of which is provided with a slideway, a slide cavity is provided inside the slide module, and the slideway is communicated with the slide cavity; a sealing joint is located on the slide module; a slide bar module, the center of which is provided with a flow groove, and one end of the slide bar module is provided with a suction nozzle; the other end of the slide bar module passes through the slideway and is provided with a protrusion, and the slide bar module is slidably connected with the slideway; the slide bar module is provided with a flow hole near the protrusion; the flow groove is respectively communicated with the flow hole and the suction nozzle; a negative pressure suction device acts on the flow hole through the sealing joint to provide negative pressure suction to collect liquid. The present invention collects a certain amount of electrolyte during battery formation detection to prevent the electrolyte from overflowing.

Description

Technical Field

[0001] The invention relates to the technical field of negative pressure liquid suction, in particular to a negative pressure suction nozzle device. Background Art

[0002] During traditional lithium battery formation testing, the pressure from the needle bed will cause the electrolyte in the battery to overflow, resulting in insufficient internal electrolyte after the battery test. The overflowed electrolyte affects the appearance of the battery and the hygiene of the environment. Summary of the invention

[0003] The purpose of the present invention is to provide a negative pressure nozzle device to prevent electrolyte from overflowing during battery formation detection.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] A negative pressure suction nozzle device, the suction nozzle device comprising:

[0006] A slide module, wherein a slideway is provided at one end of the slide module, a slide cavity is provided inside the slide module, and the slideway communicates with the slide cavity;

[0007] A sealing joint, located on the slide module;

[0008] A slide bar module, wherein a liquid flow groove is provided at the center of the slide bar module, and a suction nozzle is provided at one end of the slide bar module; the other end of the slide bar module passes through the slideway and is provided with a protrusion, and the slide bar module is slidably connected with the slideway; a liquid flow hole is provided at a position of the slide bar module close to the protrusion; the liquid flow groove is communicated with the liquid flow hole and the suction nozzle respectively;

[0009] The negative pressure liquid aspirator acts on the liquid flow hole through the sealing joint to provide negative pressure suction to collect liquid.

[0010] Preferably, the slide bar module comprises: a slide bar and a fixed head;

[0011] One end of the sliding rod passes through the fixed head and is provided with the suction nozzle; the sliding rod is fixedly connected to the fixed head;

[0012] A liquid flow groove is provided at the center of the slide rod, the other end of the slide rod passes through the slideway and is provided with a protrusion, and the slide rod is slidably connected to the slideway; a liquid flow hole is provided at a position of the slide rod close to the protrusion; and the liquid flow groove is respectively communicated with the liquid flow hole and the suction nozzle.

[0013] Preferably, a first sealing ring is provided at the connection between the sliding rod and the protrusion.

[0014] Preferably, a spring is provided between the slide module and the fixed head;

[0015] When there is no external force, the spring is expanded and the device is in an extended state, at which time the liquid flow hole is located at the slideway;

[0016] When there is an external force, the spring contracts, the device is in a contracted state, the liquid flow hole is located in the sliding cavity, and the negative pressure liquid suction device acts on the liquid flow hole through the sealing joint.

[0017] Preferably, the other end of the slide module is in a stepped cylindrical shape which decreases successively, so as to seal the slide cavity.

[0018] Preferably, a second sealing ring is provided at the connection between the spring and the slide module.

[0019] Preferably, a nozzle rubber pad is provided at the nozzle.

[0020] According to the specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0021] The present invention relates to a negative pressure suction nozzle device, comprising: a slide module, one end of which is provided with a slideway, a slide cavity is provided inside the slide module, and the slideway is communicated with the slide cavity; a sealing joint is located on the slide module; a slide bar module, the center of which is provided with a flow groove, and one end of the slide bar module is provided with a suction nozzle; the other end of the slide bar module passes through the slideway and is provided with a protrusion, and the slide bar module is slidably connected with the slideway; the slide bar module is provided with a flow hole near the protrusion; the flow groove is respectively communicated with the flow hole and the suction nozzle; a negative pressure suction device acts on the flow hole through the sealing joint to provide negative pressure suction to collect liquid. The present invention collects a certain amount of electrolyte during battery formation detection to prevent the electrolyte from overflowing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 It is a three-dimensional structural diagram of the negative pressure nozzle device of the present invention;

[0024] Figure 2 It is a cross-sectional schematic diagram of the negative pressure nozzle device of the present invention in an extended state;

[0025] Figure 3 It is a cross-sectional schematic diagram of the negative pressure suction nozzle device of the present invention in a contracted state.

[0026] Explanation of symbols:

[0027] 1-slide module, 2-slide rod module, 3-sealing joint, 4 spring, 5-first sealing ring, 6-second sealing ring, 11-slide cavity, 21-slide rod, 22-fixed head, 23-liquid flow groove, 24-liquid flow hole, 25-suction nozzle, 26-suction nozzle rubber pad. DETAILED DESCRIPTION

[0028] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0029] The purpose of the present invention is to provide a negative pressure nozzle device to prevent electrolyte from overflowing during battery formation detection.

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] like Figure 1-3 As shown, the present invention provides a negative pressure suction nozzle device, including: a slide tube module 1, a sealing joint 3, a slide rod module 2 and a negative pressure liquid suction device.

[0032] A slideway is provided at one end of the slide module 1 , a slide cavity 11 is provided inside the slide module 1 , and the slideway is communicated with the slide cavity 11 .

[0033] The slide bar module 2 includes a slide bar 21 and a fixing head 22 .

[0034] One end of the slide bar 21 passes through the fixed head 22 and is provided with a suction nozzle 25; the slide bar 21 is fixedly connected to the fixed head 22. The suction nozzle 25 is a self-closing structure.

[0035] The center of the slide bar 21 is provided with a liquid flow groove 23, the other end of the slide bar 21 passes through the slideway and is provided with a protrusion, and the slide bar 21 is slidably connected with the slideway; the slide bar 21 is provided with a liquid flow hole 24 near the protrusion; the liquid flow groove 23 is respectively connected with the liquid flow hole 24 and the suction nozzle 25. The diameter of the slide cavity 11 is larger than the diameter of the protrusion, and the diameter of the slide bar 21 is equal to the diameter of the slideway to improve the sealing performance.

[0036] The sealing joint 3 is located on the slide module 1 .

[0037] The negative pressure liquid aspirator acts on the liquid flow hole 24 through the sealing joint 3, and the negative pressure liquid aspirator is used to provide negative pressure suction to collect liquid.

[0038] As an optional implementation, a spring 4 is provided between the slide module 1 and the fixing head 22 of the present invention.

[0039] The specific principles of the present invention are as follows:

[0040] The suction nozzle 25 is connected to the liquid injection port of the battery. When the battery is subjected to formation testing, an external force is applied to the slide module 1 to shrink the spring 4. The device is in a contracted state, and the liquid flow hole 24 is located at the slide cavity 11. At this time, the negative pressure liquid aspirator acts on the liquid flow hole 24 through the pipeline through the sealing joint 3 to suck out part of the electrolyte and store it in the negative pressure liquid aspirator. At the same time, the external force is removed, the spring 4 is unfolded, and the device is in an extended state. At this time, the liquid flow hole 24 is located at the slideway, so that the electrolyte in the negative pressure liquid aspirator will not flow back.

[0041] After the battery formation test is completed, an external force is applied to the slide module 1 to contract the spring 4, and the device is in a contracted state. The liquid flow hole 24 is located at the slide cavity 11. At this time, the negative pressure liquid suction device acts on the liquid flow hole 24 through the pipeline through the sealing joint 3 to inject the stored electrolyte into the battery.

[0042] In order to make the device more sealed and prevent the electrolyte from flowing out from the gap of the device, the present invention provides a first sealing ring 5 at the connection between the slide rod 21 and the protrusion; and a second sealing ring 6 at the connection between the spring 4 and the slide module 1.

[0043] As an optional embodiment, the other end of the slide module 1 of the present invention is a stepped cylindrical shape that is successively reduced, which is used to seal the slide cavity 11, while saving materials, reducing volume and reducing costs.

[0044] In order to ensure the sealing between the suction nozzle 25 and the liquid injection port of the battery, the present invention provides a suction nozzle rubber pad 26 at the suction nozzle 25 to ensure that no electrolyte flows out of the interface.

[0045] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0046] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the device and its core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A negative pressure nozzle device, characterized in that: The device comprises: A slide module, wherein a slideway is provided at one end of the slide module, a slide cavity is provided inside the slide module, and the slideway communicates with the slide cavity; A sealing joint, located on the slide module; A slide bar module, wherein a liquid flow groove is provided at the center of the slide bar module, and a suction nozzle is provided at one end of the slide bar module; the other end of the slide bar module passes through the slideway and is provided with a protrusion, and the slide bar module is slidably connected with the slideway; a liquid flow hole is provided at a position of the slide bar module close to the protrusion; the liquid flow groove is communicated with the liquid flow hole and the suction nozzle respectively; A negative pressure liquid aspirator, acting on the liquid flow hole through the sealing joint, for providing negative pressure suction to collect liquid; The slide bar module comprises: a slide bar and a fixed head; One end of the sliding rod passes through the fixed head and is provided with the suction nozzle; the sliding rod is fixedly connected to the fixed head; A liquid flow groove is provided at the center of the slide bar, the other end of the slide bar passes through the slideway and is provided with a protrusion, and the slide bar is slidably connected with the slideway; a liquid flow hole is provided at a position of the slide bar close to the protrusion; the liquid flow groove is communicated with the liquid flow hole and the suction nozzle respectively; A spring is provided between the slide module and the fixed head; When there is no external force, the spring is expanded and the device is in an extended state, at which time the liquid flow hole is located at the slideway; When there is an external force, the spring contracts, the device is in a contracted state, the liquid flow hole is located at the slide cavity, and the negative pressure liquid suction device acts on the liquid flow hole through the sealing joint; The suction nozzle is a self-closing structure; The diameter of the sliding cavity is greater than the diameter of the protrusion; the diameter of the sliding rod is equal to the diameter of the slideway.

2. A negative pressure nozzle device according to claim 1, characterized in that: A first sealing ring is provided at the connection between the sliding rod and the protrusion.

3. A negative pressure nozzle device according to claim 1, characterized in that: The other end of the slide module is in a stepped cylindrical shape which decreases in size successively and is used to seal the slide cavity.

4. A negative pressure nozzle device according to claim 1, characterized in that: A second sealing ring is provided at the connection between the spring and the slide module.

5. A negative pressure nozzle device according to claim 1, characterized in that: A suction nozzle rubber pad is provided at the suction nozzle.

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