CN220797037U - Injection structure and electrolyte injection device - Google Patents
Injection structure and electrolyte injection device Download PDFInfo
- Publication number
- CN220797037U CN220797037U CN202322372384.7U CN202322372384U CN220797037U CN 220797037 U CN220797037 U CN 220797037U CN 202322372384 U CN202322372384 U CN 202322372384U CN 220797037 U CN220797037 U CN 220797037U
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- China
- Prior art keywords
- injection
- tube
- liquid medium
- injection tube
- diaphragm
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- 238000002347 injection Methods 0.000 title claims abstract description 126
- 239000007924 injection Substances 0.000 title claims abstract description 126
- 239000003792 electrolyte Substances 0.000 title claims description 26
- 239000007788 liquid Substances 0.000 claims abstract description 63
- 239000013013 elastic material Substances 0.000 claims abstract description 5
- 230000005855 radiation Effects 0.000 claims abstract description 4
- 238000011084 recovery Methods 0.000 claims abstract description 3
- 238000007789 sealing Methods 0.000 claims description 35
- 238000001802 infusion Methods 0.000 claims description 9
- 238000012546 transfer Methods 0.000 claims description 9
- 230000000903 blocking effect Effects 0.000 claims description 7
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 239000012528 membrane Substances 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 6
- 230000006872 improvement Effects 0.000 description 6
- 229910052744 lithium Inorganic materials 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 229910000619 316 stainless steel Inorganic materials 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- -1 specifically Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses an injection structure, which comprises an injection tube; the opening at the bottom end of the injection tube is provided with a diaphragm made of elastic materials, the diaphragm is defined with a base point, a plurality of dividing openings formed by radiation are formed in the center of the base point, and a valve is formed between two adjacent dividing openings; when the liquid medium is injected into the injection tube, the valve opens the diaphragm under the impact of the liquid medium, and when the injection tube stops injecting the liquid medium, the valve closes the diaphragm under the elastic recovery shape. The utility model has the beneficial effects that the opening at the bottom end of the injection tube can be closed when the injection is stopped, so that the problem of dropping liquid is avoided.
Description
Technical Field
The utility model relates to an injection structure and an electrolyte injection device, which are applied to the technical field of lithium battery injection.
Background
At present, in the liquid injection process of lithium battery production, electrolyte passes through the liquid injection pump control liquid injection volume, and by pipe conveying electrolyte to injection syringe or syringe needle, again by injection syringe or syringe needle to lithium battery injection electrolyte, and the injection syringe or the injection needle of tradition use is after stopping the liquid injection, and the inside remaining electrolyte can continue the drip, and the liquid injection volume is unstable can be made to the drip problem that consequently leads to.
For example, patent application publication No. CN211045587U discloses an electrolyte injection device, in which an injection short tube (injection tube or injection needle) extending below the bottom plate of an injection seal box is connected to the lower end of an injection cup, and the injection short tube is used for injecting electrolyte. After stopping the injection, the electrolyte remained in the injection short tube still can continuously drop downwards, thereby causing the technical problems.
Disclosure of Invention
The utility model aims to solve the technical problem of providing an injection structure and an electrolyte injection device, which can close an opening at the bottom end of an injection tube when injection is stopped, so that the problem of dropping liquid is avoided.
The utility model is realized by the following technical scheme.
An injection structure comprising an injection tube; the opening at the bottom end of the injection tube is provided with a diaphragm made of elastic materials, the diaphragm is defined with a base point, a plurality of dividing openings formed by radiation are formed in the center of the base point, and a valve is formed between two adjacent dividing openings; when the liquid medium is injected into the injection tube, the valve opens the diaphragm under the impact of the liquid medium, and when the injection tube stops injecting the liquid medium, the valve closes the diaphragm under the elastic recovery shape.
As a further improvement of the utility model, the diaphragm has an arch formed to arch into the syringe, and the score and the valve are located on the arch.
As a further improvement of the utility model, a gap is arranged between the outer end of the dividing opening far away from the base point and the edge of the arched part, so that a liquid blocking wall is formed on the inner surface of the diaphragm from the outer end of the dividing opening to the edge of the arched part, and a liquid receiving groove is formed on the inner wall corresponding to the liquid blocking wall and the injection tube and used for receiving the liquid medium remained in the injection tube when the liquid medium is not injected.
As a further improvement of the utility model, the utility model also comprises a sealing cover; the sealing cover is sleeved at the bottom of the injection tube, and the bottom of the sealing cover is provided with a through hole for allowing the liquid medium to flow out; the septum has a sealing portion clamped by the bottom end of the syringe and the cap bottom of the sealing cap.
As a further improvement of the utility model, the sealing cover is in threaded connection with the injection tube.
As a further development of the utility model, the injection tube has a constriction extending to the bottom end, the inside diameter of the constriction decreasing gradually in the injection direction.
An electrolyte injection device comprises an injection structure, an adapter structure and a transfusion tube; the top end of the switching structure is connected with the output end of the infusion tube, and the bottom end of the switching structure is connected with the top end of the injection tube; the infusion tube is used for conveying electrolyte.
As a further improvement of the utility model, the switching structure comprises a switching tube and a switching cover; the switching cover is sleeved at the bottom of the switching pipe, and the cover bottom of the switching cover is provided with a through hole allowing the top end of the injection pipe to be inserted; the output end of the infusion tube is inserted into the top end of the transfer tube.
As a further improvement of the present utility model, the top end of the syringe has a radially extending flange portion supported by the bottom cover of the adapter cover; and a sealing ring clamped by the bottom end and the flange part of the transfer tube is arranged between the bottom end and the flange part of the transfer tube.
As a further development of the utility model, the adapter cap and the adapter tube are screwed together.
The utility model has the beneficial effects that:
the injection tube is injected with liquid medium, and the valve is bent and deformed and collapses downwards under the impact of the liquid medium, so that a plurality of valves form openings so that the liquid medium can flow downwards from the bottom end of the injection tube; when the injection tube stops injecting the liquid medium, the valve is not impacted and is shaped under the elastic action, so that the diaphragm is closed, the liquid medium which remains and flows in the tube wall of the injection tube can be prevented from dripping from the bottom end of the injection tube, the problem that the injection tube drops is avoided, and the stability of the injection amount is ensured.
Drawings
Preferred embodiments of the present utility model will be described in detail below with reference to the attached drawings, to facilitate understanding of the objects and advantages of the present utility model, wherein:
FIG. 1 is a cross-sectional view of an injection structure of embodiment 1;
FIG. 2 is an enlarged partial schematic view of FIG. 1;
FIG. 3 is a schematic view of a syringe of embodiment 1;
FIG. 4 is a schematic view of a separator of embodiment 1;
fig. 5 is a cross-sectional view of the electrolyte injection apparatus of embodiment 2.
Detailed Description
The utility model is described in further detail below with reference to the drawings and the examples.
The terms of orientation such as up, down, left, right, front, rear, front, back, top, bottom, etc. mentioned or possible in this specification are defined with respect to the configurations shown in the drawings, and the terms "inner" and "outer" refer to the relative concepts of the terms toward or away from the geometric center of a particular component, respectively, and thus may be changed accordingly depending on the location and use state of the component. These and other directional terms should not be construed as limiting terms.
Embodiment case 1:
1-4, including syringe 1 and diaphragm 2, syringe 1 sets up vertically, and its top and bottom all have the opening, diaphragm 2 sets up the opening at syringe 1 bottom to be made by elastic material. The diaphragm 2 defines a base point 2a, the base point 2a may be disposed at a center point of the diaphragm 2 or may be disposed near the center point, the diaphragm 2 has a plurality of slits 2b formed by radiation with the base point 2a as a center, and generally, the slits 2b are disposed two and perpendicular to each other to form a star-shaped slit structure, and the diaphragm 2 forms a valve 2c between any two adjacent slits 2 b.
The injection structure of the embodiment is mainly applied to the technical field of liquid injection of lithium batteries and is used for injecting liquid media such as electrolyte. When the liquid medium is injected into the injection tube 1, that is, the liquid medium flows in the injection tube 1, the valve 2c is bent and deformed and collapses downwards under the impact of the liquid medium, so that the plurality of valves 2c form through openings so that the liquid medium can flow downwards from the bottom end of the injection tube 1. When the injection tube 1 stops injecting the liquid medium, the valve 2c is not impacted and is deformed under the elastic action, so that the diaphragm 2 is closed, the liquid medium which remains and flows in the tube wall of the injection tube 1 can be prevented from dripping out from the bottom end of the injection tube 1, the problem that the injection tube 1 has dripping is avoided, and the stability of the injection amount is ensured.
In this embodiment, the diaphragm 2 is made of an elastic material, specifically, silica gel may be used, which has good flexibility and elasticity, and can recover after being pressed, and has good corrosion resistance, so that the diaphragm 2 is very suitable for the characteristic requirement of the diaphragm. The injection tube 1 is made of a material with good rigidity and corrosion resistance, and can be made of 316 stainless steel.
In this embodiment, the septum 2 has an arch portion 21 formed to arch inward of the syringe 1, and the slit 2b and the valve 2c are positioned on the arch portion 21. The arch part 21 has good shape stability due to its special shape, so that the valve 2c can maintain its structural shape well when stopping injecting the liquid medium, and avoid the leakage caused by downward collapse.
In this embodiment, an end of the dividing opening 2b away from the base point 2a is defined as an outer end, and a gap is formed between the outer end of the dividing opening 2b and the edge of the arch portion 21, so that a liquid blocking wall 211 is formed on the inner surface of the diaphragm 2 from the outer end of the dividing opening 2b to the edge of the arch portion 21, the liquid blocking wall 211 is in a ring shape, and a liquid receiving groove s is formed on the inner wall corresponding to the liquid blocking wall 211 and the injection tube 1 and is used for receiving the liquid medium remained in the injection tube 1 when the liquid medium is not injected. On the one hand, a gap is reserved between the outer end of the scribing port 2b and the edge of the arched portion 21, the size of the valve 2c is limited, the condition that the valve 2c is easy to deform due to oversized valve 2c is avoided, and the closing state of the valve 2c is more stable when the injection of liquid medium is stopped. On the other hand, due to the existence of the gap, the liquid receiving groove s is formed by the baffle wall 211 and the inner wall of the injection tube 1, when the injection is stopped, a small amount of liquid medium remains in the injection tube 1, and the liquid medium can be collected in the liquid receiving groove, so that the liquid medium is not easy to permeate from the dividing opening 2b, and the situation that the injection tube 1 drops is further avoided.
The injection structure of this embodiment further includes a sealing cover 3, the sealing cover 3 is sleeved at the bottom of the injection tube 1, the bottom of the sealing cover 3 is provided with a through hole to allow the liquid medium to flow out, and when the injection tube 1 injects the liquid medium, the liquid medium firstly impacts the valve 2c to open the through hole to flow out, and then flows out through the through hole. The diaphragm 2 is provided with a ring-shaped sealing part 22, the sealing part 22 is connected to the edge of the arched part 21, the sealing part 22 is clamped by the bottom end of the injection tube 1 and the cover bottom of the sealing cover 3, and a sealing structure is formed, so that liquid medium can be prevented from penetrating between the bottom end of the injection tube 1 and the diaphragm 2.
In this embodiment, the sealing cover 3 is in threaded connection with the injection tube 1, and by means of threaded connection, the clamping force of the bottom end of the injection tube 1 and the sealing cover 3 on the sealing portion 22 can be adjusted, so that the clamping force can be reasonably adjusted according to the caliber specification of the injection tube 1, the injection strength of the liquid medium, and the like.
In this embodiment, the lower portion of the injection tube 1 has a closing-in section 11, the closing-in section 11 extends to the bottom end of the injection tube 1, the inner diameter of the closing-in section 11 gradually decreases along the injection direction, and the caliber variation of the closing-in section 11 can improve the pressure of the liquid medium flowing to the bottom end of the injection tube 1, i.e. the impact strength of the liquid medium on the valve 2c can be improved, so that the efficiency of injecting the liquid medium can be improved. In addition, due to the arrangement of the sealing cover 3 and the sealing portion 22, the sealing performance between the diaphragm 2 and the syringe 1 is good, and the occurrence of the condition that the sealing is affected by permeation or the like due to the enhancement of the pressure of the liquid medium can be avoided.
Embodiment case 2:
an electrolyte injection device, referring to fig. 5 and combining fig. 1-4, comprises an injection structure, a switching structure 4 and a transfusion tube 5, wherein the injection structure is shown in embodiment 1. The top of the switching structure 4 is connected with the output end of the output pipe, the bottom of the switching structure 4 is connected with the top of the injection tube 1, and the input section of the infusion tube 5 is connected with equipment for supplying electrolyte and is used for conveying the electrolyte to carry out lithium battery injection.
In this embodiment, the adapter structure 4 includes an adapter tube 41 and an adapter cover 42, the adapter cover 42 is sleeved at the bottom of the adapter tube 41, the cover bottom of the adapter cover 42 has a through hole allowing the top end of the syringe 1 to be inserted, and the output end of the infusion tube 5 is inserted at the top end of the adapter tube 41. The adapter tube 41 and the adapter cover 42 are made of a material with better rigidity and corrosion resistance, and can be made of 316 stainless steel. The combined structure of the transfer tube 41 and the transfer cover 42 can stably convey the electrolyte output by the infusion tube 5 to the injection tube 1, so as to improve the stability of the injection tube 1 for injecting the lithium battery.
In this embodiment, the top end of the syringe 1 has the flange portion 12 extending radially, the flange portion 12 is supported by the bottom cover of the adapting cover 42, when assembling specifically, the syringe 1 passes through the through hole from top to bottom above the adapting cover 42, so that the flange portion 12 is put on the bottom of the adapting cover 42, then the adapting cover 42 is sleeved on the bottom of the adapting pipe 41, and finally the sealing cover 3 is sleeved on the bottom of the syringe 1, namely, the whole assembly of the electrolyte injection device is completed, and the flange portion 12 is provided to make the assembly simpler. The sealing ring 6 clamped by the two is arranged between the bottom end of the transfer tube 41 and the flange part 12, the sealing ring 6 can improve the sealing performance among the transfer tube 41, the transfer cover 42 and the injection tube 1, and the infiltration of electrolyte is avoided so as to ensure the stability of the injection amount.
In this embodiment, the adapter cover 42 is in threaded connection with the adapter tube 41, and by means of threaded connection, the clamping force of the bottom end of the adapter tube 41 and the flange portion 12 on the sealing ring 6 can be adjusted, and the sealing strength can be reasonably adjusted according to practical application conditions.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme recorded in each embodiment can be modified or part of technical features in the technical scheme can be replaced equivalently; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (10)
1. An injection structure, characterized by comprising an injection tube (1); the opening at the bottom end of the injection tube (1) is provided with a diaphragm (2) made of elastic materials, the diaphragm (2) is defined with a base point (2 a), a plurality of dividing openings (2 b) formed by radiation are formed in the center of the base point (2 a), and a valve (2 c) is formed between two adjacent dividing openings (2 b); when the injection tube (1) injects the liquid medium, the valve (2 c) opens the diaphragm (2) under the impact of the liquid medium, and when the injection tube (1) stops injecting the liquid medium, the valve (2 c) closes the diaphragm (2) under the elastic recovery.
2. Injection structure according to claim 1, characterized in that the membrane (2) has an arched portion (21) arched inwards the syringe (1), the score (2 b) and the valve (2 c) being located on the arched portion (21).
3. Injection structure according to claim 2, characterized in that a gap is provided between the outer end of the slit (2 b) away from the base point (2 a) and the edge of the arched portion (21), so that a liquid blocking wall (211) is formed on the inner surface of the diaphragm (2) from the outer end of the slit (2 b) to the edge of the arched portion (21), and a liquid receiving groove(s) is formed on the inner wall of the liquid blocking wall (211) corresponding to the injection tube (1) for receiving the liquid medium remaining in the injection tube (1) when the liquid medium is not injected.
4. An injection structure according to any one of claims 1-3, further comprising a sealing cap (3); the sealing cover (3) is sleeved at the bottom of the injection tube (1), and the bottom of the sealing cover (3) is provided with a through hole for allowing liquid medium to flow out; the septum (2) has a sealing portion (22) sandwiched between the bottom end of the syringe (1) and the cap bottom of the sealing cap (3).
5. Injection structure according to claim 4, characterized in that the sealing cap (3) is screwed with the injection tube (1).
6. An injection structure according to any one of claims 1-3, wherein the injection tube (1) has a closing-in section (11) extending to a bottom end, the inside diameter of the closing-in section (11) decreasing gradually in the injection direction.
7. An electrolyte injection device, characterized by comprising an injection structure according to any one of claims 1-6, an adapter structure (4), a transfusion tube (5); the top end of the switching structure (4) is connected with the output end of the infusion tube (5), and the bottom end of the switching structure (4) is connected with the top end of the injection tube (1); the infusion tube (5) is used for conveying electrolyte.
8. Electrolyte injection device according to claim 7, wherein the adapter structure (4) comprises an adapter tube (41), an adapter cap (42); the switching cover (42) is sleeved at the bottom of the switching pipe (41), and the cover bottom of the switching cover (42) is provided with a through hole for allowing the top end of the injection pipe (1) to be inserted; the output end of the infusion tube (5) is inserted into the top end of the switching tube (41).
9. The electrolyte injection device of claim 8, wherein the top end of the injection tube (1) has a radially extending flange portion (12), the flange portion (12) being supported by a bottom cover of the adapter cover (42); a sealing ring (6) clamped by the bottom end of the transfer pipe (41) and the flange part (12) is arranged between the bottom end and the flange part.
10. Electrolyte injection device according to claim 8, wherein the adapter cap (42) and the adapter tube (41) are screwed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322372384.7U CN220797037U (en) | 2023-09-01 | 2023-09-01 | Injection structure and electrolyte injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322372384.7U CN220797037U (en) | 2023-09-01 | 2023-09-01 | Injection structure and electrolyte injection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220797037U true CN220797037U (en) | 2024-04-16 |
Family
ID=90633118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322372384.7U Active CN220797037U (en) | 2023-09-01 | 2023-09-01 | Injection structure and electrolyte injection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220797037U (en) |
-
2023
- 2023-09-01 CN CN202322372384.7U patent/CN220797037U/en active Active
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