Liquid injection needle mechanism
By setting a separating plate and a separating hole in the injection needle mechanism, the liquid droplets are divided into smaller droplets by utilizing the surface tension of the liquid, which solves the problem of electrolyte outflow after injection, achieves electrolyte saving and structural cleanliness, and reduces production costs.
Patent Information
- Application Number
- CN202423049217.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-10
AI Technical Summary
Existing large-diameter injection needles have residual electrolyte that flows out due to its own weight after injection, resulting in electrolyte waste and structural contamination.
The design employs a liquid distribution plate and distribution hole to divide the liquid droplets at the outlet into multiple smaller droplets, utilizing the surface tension of the liquid to achieve self-locking and prevent electrolyte from flowing out.
Reduce electrolyte waste, avoid battery structure contamination, lower production costs, and improve battery quality.
Smart Images
Figure CN223680351U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to battery technology field, concretely relates to a liquid injection needle mechanism. BACKGROUND
[0002] The battery is generally composed of positive and negative poles and electrolyte, and the electrolyte bears the function of transmitting ions between the positive and negative poles, and it has important influence on the capacity, working temperature range, cycle performance and safety performance of the battery.
[0003] Adding electrolyte into the battery will use the liquid injection needle, in order to improve the production capacity, generally using the liquid injection needle with large pipe diameter to inject liquid, however, the residual electrolyte in the liquid injection needle cylinder of the existing large pipe diameter liquid injection needle flows out from the injection nozzle due to the self weight after injection, not only causes the waste of electrolyte, but also causes the pollution to other structures. UTILITY MODEL CONTENT
[0004] The utility model provides a liquid injection needle mechanism in view of the deficiency of prior art, which can avoid the electrolyte from flowing out from the injection nozzle due to the self weight after using the liquid injection needle with large pipe diameter to inject liquid, and solve the problems of electrolyte waste and pollution of other structures of the battery.
[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:
[0006] A liquid injection needle mechanism, comprising a liquid injection needle cylinder, one end of the liquid injection needle cylinder is provided with a liquid outlet, the liquid injection needle cylinder is provided with a liquid outlet nozzle assembly at the liquid outlet, the liquid outlet nozzle assembly comprises a first liquid outlet nozzle, a distribution plate, a second liquid outlet nozzle and a fixing cylinder, the fixing cylinder fixes the first liquid outlet nozzle and the second liquid outlet nozzle on the liquid injection needle cylinder, the first liquid outlet nozzle and the second liquid outlet nozzle are sequentially arranged along the liquid injection direction of the liquid injection needle cylinder, the distribution plate is clamped between the first liquid outlet nozzle and the second liquid outlet nozzle, and a plurality of distribution holes are formed in the middle of the distribution plate; by arranging the distribution plate and a plurality of distribution holes on the distribution plate, the liquid drops at the liquid outlet nozzle are divided into a plurality of small liquid drops, the self-locking is completed by using the surface tension of the liquid, the electrolyte is prevented from flowing out from the injection nozzle due to the self weight, and the problems of electrolyte waste and pollution of other structures are solved.
[0007] As a preferred scheme, the second liquid outlet nozzle is provided with a first step on the outer side wall of one end close to the distribution plate, and the fixing cylinder is provided with a second step corresponding to the first step, and when assembling, the fixing cylinder fixes the first liquid outlet nozzle, the second liquid outlet nozzle and the distribution plate on the liquid injection needle cylinder.
[0008] As a preferred scheme, the injection needle cylinder is provided with external threads on the outer side wall of the liquid outlet, and the fixed cylinder is provided with internal threads corresponding to the external threads on the inner side wall, and the fixed cylinder and the injection needle cylinder are fixedly connected through the internal threads and the external threads.
[0009] As a preferred scheme, the first liquid outlet nozzle, the second liquid outlet nozzle and the injection needle cylinder are coaxially arranged, and the inner diameters of the first liquid outlet nozzle and the second liquid outlet nozzle are 4.2mm-4.6mm.
[0010] As a preferred scheme, the thickness of the liquid distribution plate is 0.9mm-1.1mm.
[0011] As a preferred scheme, the material of the liquid distribution plate is a corrosion-resistant non-metallic material.
[0012] As a preferred scheme, the diameters of the plurality of liquid distribution holes are 0.8mm-1.2mm.
[0013] As a preferred scheme, the number of the liquid distribution holes is 5-8.
[0014] As a preferred scheme, the plurality of liquid distribution holes are annularly distributed.
[0015] As a preferred scheme, the distance from the outermost liquid distribution hole to the edge of the liquid distribution plate is 2mm-3mm.
[0016] The utility model discloses compared with prior art has apparent advantages and beneficial effects, specifically,
[0017] 1. By setting up liquid distribution plate and setting up a plurality of liquid distribution holes on liquid distribution plate, liquid drops at liquid outlet nozzle are divided into a plurality of small liquid drops, and self-locking is completed by using surface tension of liquid, so that electrolyte is prevented from flowing out from injection nozzle due to self weight, thereby reducing waste of electrolyte, avoiding electrolyte from directly impacting battery cell and causing damage to battery cell, reducing production cost, avoiding electrolyte from polluting other structures and improving quality of battery.
[0018] 2. By setting up first liquid outlet nozzle, liquid distribution plate, second liquid outlet nozzle and fixed cylinder, installation structure of liquid outlet nozzle assembly is simplified, liquid outlet nozzle assembly is conveniently installed on injection needle cylinder, and installation efficiency is improved.
[0019] To make the structure features, technical means and specific purposes and functions reached by the utility model clearer, the utility model will be further described in detail below by combining with the drawings and specific embodiments: DRAWINGS
[0020] Figure 1 It is the assembly structure schematic diagram of the embodiment of the utility model;
[0021] Figure 2is the exploded view of the embodiment of the utility model;
[0022] Figure 3 is Figure 2 is the structural enlarged view of position A in the middle;
[0023] Figure 4 is the sectional view of the embodiment of the utility model;
[0024] Figure 5 is Figure 4 is the structural enlarged view of position B in the middle.
[0025] The figure mark explanation is as follows:
[0026] 10-liquid injection needle cylinder;11-occlusion air cylinder;12-liquid injection adapter;
[0027] 20-needle;21-plug;211-first camber;212-liquid outlet groove;22-first liquid outlet nozzle;221-second camber;23-liquid distribution plate;24-liquid distribution hole;25-second liquid outlet nozzle;251-first step;26-fixed cylinder;261-second step;27-sealing sheet. Specific implementation
[0028] In the description of the utility model, it needs to be explained that the orientation or position relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relation shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated position or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as the limitation to the utility model.
[0029] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected;Can be mechanical connection, can also be electrical connection;Can be directly connected, can also be indirectly connected through intermediate medium, can be the communication inside two elements.For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0030] As Figures 1-5The utility model discloses a liquid injection needle mechanism, including liquid injection needle cylinder 10, one end of liquid injection needle cylinder 10 is equipped with the liquid outlet, and the liquid injection needle cylinder 10 is located the liquid outlet and is equipped with the liquid outlet nozzle subassembly, the liquid outlet nozzle subassembly includes first liquid outlet nozzle 22, liquid distribution board 23, second liquid outlet nozzle 25 and fixed cylinder 26, the fixed cylinder 26 will first liquid outlet nozzle 22 and second liquid outlet nozzle 25 be fixed on liquid injection needle cylinder 10, first liquid outlet nozzle 22 and second liquid outlet nozzle 25 are sequentially arranged along the liquid injection direction of liquid injection needle cylinder 10, the liquid distribution board 23 is clamped between first liquid outlet nozzle 22 and second liquid outlet nozzle 25, and a plurality of liquid distribution holes 24 are formed in the middle of the liquid distribution board 23, first step 251 is equipped with on the outer side wall of one end of second liquid outlet nozzle 25 close to the liquid distribution board 23, and the second step 261 corresponding to first step 251 is formed in the fixed cylinder 26, when assembling, the fixed cylinder 26 will first liquid outlet nozzle 22, second liquid outlet nozzle 25 and liquid distribution board 23 be fixed on liquid injection needle cylinder 10, the outer thread is formed on the outer side wall of the liquid outlet of liquid injection needle cylinder 10, the inner thread corresponding to the outer thread is formed on the inner side wall of the fixed cylinder 26, and the fixed cylinder 26 and liquid injection needle cylinder 10 are fixedly connected through the inner thread and the outer thread, by setting first liquid outlet nozzle 22, liquid distribution board 23, second liquid outlet nozzle 25 and fixed cylinder 26, and adopting the mode of thread connection to install the liquid outlet nozzle subassembly on liquid injection needle cylinder 10, the liquid outlet nozzle subassembly is installed and maintained conveniently, by setting the liquid distribution board 23 and setting a plurality of liquid distribution holes 24 on the liquid distribution board 23, the liquid drops at the liquid outlet nozzle are divided into a plurality of small liquid drops, the self-locking is completed by using the surface tension of liquid, the electrolyte is prevented from flowing out from the injection nozzle due to self weight, and the problems of electrolyte waste and other structure pollution are solved.
[0031] In the utility model, the plug 21 for plugging the first liquid outlet nozzle 22 is arranged in the liquid injection needle cylinder 10, one end of the liquid injection needle cylinder 10 away from the liquid outlet is equipped with the plugging cylinder 11, the output end of the plugging cylinder 11 is equipped with the ejector pin 20, and the ejector pin 20 is connected with the plug 21, one end of the plug 21 facing the first liquid outlet nozzle 22 is equipped with the first arc surface 211, and the first liquid outlet nozzle 22 is equipped with the second arc surface 221 corresponding to the first arc surface 211, by arranging the plug 21, the first liquid outlet nozzle 22 can be plugged, and by arranging the first arc surface 211 and the second arc surface 221, the plug 21 can better plug the first liquid outlet nozzle 22.
[0032] In the utility model, the plug 21 is further equipped with the liquid outlet groove 212 for the electrolyte in the liquid injection needle cylinder 10, and the structure adopts the prior art commonly used by the person skilled in the art, which will not be repeated here.
[0033] In the utility model, the liquid injection adapter 12 is further arranged between the plugging cylinder 11 and the liquid injection needle cylinder 10, and the liquid injection needle cylinder 10 can be communicated with the external electrolyte container through the liquid injection adapter 12.
[0034] The first liquid outlet nozzle 22, the second liquid outlet nozzle 25 and the liquid injection needle cylinder 10 are coaxially arranged, and the inner diameters of the first liquid outlet nozzle 22 and the second liquid outlet nozzle 25 are 4.2mm-4.6mm.
[0035] The thickness of the liquid distribution plate 23 is 0.9mm-1.1mm.
[0036] The material of the liquid distribution plate is a corrosion-resistant non-metallic material; by using the corrosion-resistant non-metallic material as the manufacturing material, the service life of the liquid distribution plate 23 can be improved by using the corrosion-resistant performance of the corrosion-resistant non-metallic material.
[0037] It should be understood that the material of the liquid distribution plate 23 can be Teflon, PP, PE and the like.
[0038] The diameters of the plurality of liquid distribution holes 24 are 0.8mm-1.2mm.
[0039] The number of the plurality of liquid distribution holes 24 is 5-8; the plurality of liquid distribution holes 24 are arranged in a ring shape; it should be understood that the number and arrangement position of the liquid distribution holes 24 can be appropriately changed according to the actual use.
[0040] The distance from the liquid distribution hole 24 located at the outermost side to the edge of the liquid distribution plate 23 is 2mm-3mm.
[0041] In the utility model, the second liquid outlet nozzle 25 is further provided with a sealing sheet 27 away from one end of the first liquid outlet nozzle 22; by arranging the sealing sheet 27, the electrolyte can be further prevented from flowing out of the liquid outlet nozzle.
[0042] The use method of the utility model is as follows: after the injection of the electrolyte is completed, the sealing cylinder 11 drives the ejector pin 20 to drive the plug 21 to plug the first liquid outlet nozzle 22, the residual electrolyte is divided into a plurality of small droplets by the liquid distribution holes 24 on the liquid distribution plate 23, and the self-locking is completed by using the surface tension of the liquid.
[0043] In summary, by arranging the liquid distribution plate 23 and the plurality of liquid distribution holes 24 on the liquid distribution plate 23, the droplets at the liquid outlet nozzle are divided into a plurality of small droplets, the self-locking is completed by using the surface tension of the liquid, the electrolyte is prevented from flowing out of the injection nozzle due to the self-weight, the waste of the electrolyte is reduced, the production cost is reduced, the electrolyte is prevented from polluting other structures, the quality of the battery is improved; by arranging the first liquid outlet nozzle 22, the liquid distribution plate 23, the second liquid outlet nozzle 25 and the fixing cylinder 26, the mounting structure of the liquid outlet nozzle assembly is simplified, the liquid outlet nozzle assembly is conveniently mounted on the liquid injection needle cylinder 10, and the mounting efficiency is improved.
[0044] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and thus any modification, equivalent replacement, improvement, etc. made to the above embodiments according to the technical spirit of the present application still falls within the scope of the technical scheme of the present application.
Claims
1. A liquid injection needle mechanism, characterized in that: The device includes an injection syringe with an outlet at one end. An outlet assembly is provided at the outlet of the injection syringe. The outlet assembly includes a first outlet, a dispensing plate, a second outlet, and a fixing cylinder. The fixing cylinder fixes the first and second outlets to the injection syringe. The first and second outlets are arranged sequentially along the injection direction of the injection syringe. The dispensing plate is sandwiched between the first and second outlets and has several dispensing holes in its middle.
2. The injection needle mechanism according to claim 1, characterized in that, The second dispensing nozzle has a first step on the outer wall near the dispensing plate, and the fixed cylinder has a second step corresponding to the first step. During assembly, the fixed cylinder fixes the first dispensing nozzle, the second dispensing nozzle, and the dispensing plate to the injection syringe.
3. The injection needle mechanism according to claim 2, characterized in that, The injection syringe has an external thread on the outer wall of the outlet, and the fixed cylinder has an internal thread corresponding to the external thread on the inner wall. The fixed cylinder and the injection syringe are fixedly connected by the internal and external threads.
4. The injection needle mechanism according to claim 1, characterized in that, The first and second dispensing nozzles are coaxially arranged with the injection syringe, and the inner diameters of the first and second dispensing nozzles are both 4.2mm-4.6mm.
5. The injection needle mechanism according to claim 1, characterized in that, The thickness of the separatory plate is 0.9mm-1.1mm.
6. The injection needle mechanism according to claim 1, characterized in that, The material of the separatory plate is a corrosion-resistant non-metallic material.
7. The injection needle mechanism according to claim 1, characterized in that, The diameter of some of the liquid separating holes is 0.8 mm to 1.2 mm.
8. The injection needle mechanism according to claim 1, characterized in that, The number of the liquid separating holes is 5-8.
9. The injection needle mechanism according to claim 1, characterized in that, Several of the liquid separating holes are arranged in a ring.
10. The injection needle mechanism according to claim 9, characterized in that, The distance from the outermost dispensing orifice to the edge of the dispensing plate is 2mm-3mm.