CN219917542U - Liquid injection device - Google Patents
Liquid injection device Download PDFInfo
- Publication number
- CN219917542U CN219917542U CN202321565687.4U CN202321565687U CN219917542U CN 219917542 U CN219917542 U CN 219917542U CN 202321565687 U CN202321565687 U CN 202321565687U CN 219917542 U CN219917542 U CN 219917542U
- Authority
- CN
- China
- Prior art keywords
- liquid
- valve
- liquid injection
- valve rod
- priming
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000007788 liquid Substances 0.000 title claims abstract description 206
- 238000002347 injection Methods 0.000 title claims abstract description 123
- 239000007924 injection Substances 0.000 title claims abstract description 123
- 238000003825 pressing Methods 0.000 claims abstract description 69
- 230000037452 priming Effects 0.000 claims abstract description 31
- 230000000903 blocking effect Effects 0.000 claims abstract description 24
- 238000007789 sealing Methods 0.000 claims description 23
- 210000004907 gland Anatomy 0.000 claims description 6
- 239000003292 glue Substances 0.000 description 7
- 238000005086 pumping Methods 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding 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
- Filling, Topping-Up Batteries (AREA)
Abstract
The utility model belongs to the technical field of battery cell liquid injection, and relates to a liquid injection device. The liquid injection device comprises a shell, a pressing mechanism and a valve rod, wherein a liquid injection cavity, a liquid inlet and a liquid outlet which are communicated with the liquid injection cavity are formed in the shell, the pressing mechanism is arranged on the shell and is connected with the valve rod, the valve rod is provided with a liquid injection position and a blocking position, and the pressing mechanism is used for driving the valve rod to reciprocate between the liquid injection position and the blocking position in a pressing mode; when the valve rod is positioned at the blocking position, the valve rod blocks the liquid outlet, and liquid in the liquid injection cavity cannot flow out through the liquid outlet; when the valve rod is positioned at the liquid injection position, the valve rod releases the blocking of the liquid outlet, and liquid in the liquid injection cavity can flow out through the liquid outlet. The priming device can avoid contaminating the surface of the cell or device.
Description
Technical Field
The utility model belongs to the technical field of battery cell liquid injection, and particularly relates to a liquid injection device.
Background
The common battery cell liquid injection mode has isobaric liquid injection and differential pressure liquid injection, and after liquid injection is completed, a small amount of electrolyte remains on the inner wall of the liquid injection cup, and at the moment of lifting the liquid injection nozzle, the traditional liquid injection cup has no valve and cannot be closed, so that residual liquid can drop down on the surface of a battery or equipment, surface pollution is caused, cleaning is difficult, and the welding of a battery cell sealing nail and the yield of a blue wrapping film are seriously affected.
Disclosure of Invention
The technical problems to be solved by the utility model are as follows: aiming at the technical problem that the residual liquid of the existing liquid injection cup can drop down to the surface of a battery or equipment to cause surface pollution, the liquid injection device is provided.
In order to solve the technical problems, in one aspect, an embodiment of the present utility model provides a liquid injection device, including a housing, a pressing mechanism and a valve rod, where the housing is provided with a liquid injection cavity, a liquid inlet and a liquid outlet which are communicated with the liquid injection cavity, the pressing mechanism is installed on the housing and connected with the valve rod, the valve rod is provided with a liquid injection position and a blocking position, and the pressing mechanism is used for driving the valve rod to reciprocate between the liquid injection position and the blocking position in a pressing manner;
when the valve rod is positioned at the blocking position, the valve rod blocks the liquid outlet, and liquid in the liquid injection cavity cannot flow out through the liquid outlet;
when the valve rod is positioned at the liquid injection position, the valve rod releases the blocking of the liquid outlet, and liquid in the liquid injection cavity can flow out through the liquid outlet.
According to the priming device of the embodiment of the utility model, the valve rod is driven to reciprocate between the priming position and the blocking position in a pressing mode through the pressing mechanism, and the principle is the same as that of pressing a pressing pen (such as a ball-point pen). Before liquid injection, a liquid outlet of the liquid injection device is attached to a liquid injection port of the battery, and the liquid outlet is opened to realize liquid injection by pressing a pressing mechanism. After the liquid injection is finished, before the liquid injection device is lifted, the pressing mechanism is pressed first, so that the valve rod seals the liquid outlet, and then the liquid injection device is removed, so that liquid drops in the removing process of the liquid injection device are prevented, and the surface of a battery or equipment is prevented from being polluted.
Optionally, the valve rod includes a first end, a second end and a connecting part connected between the first end and the second end, the first end is located in the liquid injection cavity and connected with the pressing mechanism, and the second end passes through the liquid outlet and extends out of the shell;
when the valve rod is positioned at the blocking position, the second end part blocks the liquid outlet;
when the valve rod is positioned at the liquid injection position, the second end part is far away from the liquid outlet.
Optionally, a first sealing ring is arranged on the shell at a position corresponding to the liquid outlet;
when the valve rod is positioned at the plugging position, the second end part is propped against the first sealing ring;
when the valve rod is positioned at the liquid injection position, a liquid flowing gap is formed between the inner wall of the first sealing ring and the valve rod.
Optionally, the pressing mechanism comprises a valve body, a valve cover, an elastic piece and a pressing assembly with a button, wherein the valve body is arranged on the shell and partially stretches into the liquid injection cavity, the pressing assembly is arranged on the valve body, and the button is exposed out of the valve body; the valve cover is connected with the part of the valve body extending into the liquid injection cavity;
the first end part sequentially penetrates through the valve cover and the valve body to be connected with the pressing assembly, and the elastic piece is elastically supported between the first end part and the valve cover along the axial direction of the valve rod.
Optionally, the pressing component is a pressing pen type pressing component.
Optionally, an annular protrusion is formed on an outer wall of the first end, and the elastic member is elastically supported between the annular protrusion and the valve cover along an axial direction of the valve stem.
Optionally, a second sealing ring is arranged between the valve rod and the valve cover;
and a third sealing ring is arranged between the valve body and the shell.
Optionally, the pressing mechanism further comprises a gland, the gland is mounted on the valve body, and the button is exposed out of the gland.
Optionally, the liquid injection device further comprises a liquid injection valve nozzle and a liquid injection glue nozzle, wherein the liquid injection valve nozzle is installed between the shell and the liquid injection glue nozzle, and a runner of the liquid injection valve nozzle is communicated between a runner of the liquid injection glue nozzle and the liquid outlet.
Optionally, the shell is further provided with a vacuum-pumping port communicated with the liquid injection cavity.
Drawings
FIG. 1 is a schematic illustration of an priming device (valve stem in a plugged position) provided in accordance with one embodiment of the present utility model;
FIG. 2 is another schematic illustration of a priming device (valve stem in priming position) according to an embodiment of the present utility model.
Reference numerals in the specification are as follows:
1. a housing; 11. a liquid injection cavity; 12. a liquid inlet; 13. a liquid outlet; 14. a vacuum pumping port; 15. a first cover plate; 16. a second cover plate; 161. chamfering the surface; 17. side coaming;
2. a pressing mechanism; 21. a valve body; 22. a valve cover; 23. an elastic member; 24. pressing the assembly; 25. a gland;
3. a valve stem; 31. a first end; 311. an annular protrusion; 32. a second end; 33. a connection part;
4. a first seal ring;
5. a second seal ring;
6. a third seal ring;
7. a liquid injection valve nozzle;
8. and a liquid injection glue nozzle.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects solved by the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
As shown in fig. 1 and 2, the priming device provided by the embodiment of the utility model includes a housing 1, a pressing mechanism 2 and a valve rod 3, wherein a priming cavity 11, a liquid inlet 12 and a liquid outlet 13 which are communicated with the priming cavity 11 are arranged on the housing 1, the pressing mechanism 2 is installed on the housing 1 and is connected with the valve rod 3, the valve rod 3 is provided with a priming position and a blocking position, and the pressing mechanism 2 is used for driving the valve rod 3 to reciprocate between the priming position and the blocking position in a pressing manner.
When the valve rod 3 is at the blocking position (as shown in fig. 2), the valve rod 3 blocks the liquid outlet 13, and the liquid in the liquid injection cavity 11 cannot flow out through the liquid outlet 13.
When the valve rod 3 is at the liquid injection position (as shown in fig. 1), the valve rod 3 releases the blocking of the liquid outlet 13, and the liquid in the liquid injection cavity 11 can flow out through the liquid outlet 13.
According to the liquid injection device provided by the embodiment of the utility model, the valve rod 3 is driven to reciprocate between the liquid injection position and the blocking position in a pressing mode through the pressing mechanism 2, and the principle is the same as that of a pressing pen (such as a ball point pen). Before the liquid injection, the liquid outlet 13 of the liquid injection device is attached to the liquid injection port of the battery, and the liquid outlet 13 is opened by pressing the pressing mechanism 2 to realize the liquid injection. After the liquid injection is finished, before the liquid injection device is lifted, the pressing mechanism 2 is pressed first, so that the valve rod 3 is used for blocking the liquid outlet 13, and then the liquid injection device is removed, so that liquid drops in the removing process of the liquid injection device are prevented, and the surface of a battery or equipment is prevented from being polluted. The liquid injection device can be suitable for the production process of automatic isobaric liquid injection of square aluminum shell lithium ion batteries.
In one embodiment, as shown in fig. 1 and 2, the valve rod 3 includes a first end 31, a second end 32, and a connection portion 33 connected between the first end 31 and the second end 32, where the first end 31 is located in the injection cavity 11 and is connected to the pressing mechanism 2, and the second end 32 protrudes out of the housing 1 through the liquid outlet 13, so as to implement assembly of the valve rod 3.
When the valve rod 3 is at the blocking position, the second end 32 blocks the liquid outlet 13, and stops the outflow of liquid. When the valve rod 3 is at the liquid injection position, the second end 32 is far away from the liquid outlet 13, so that the liquid in the liquid injection cavity 11 is injected through the liquid outlet 13.
The liquid outlet 13 is closed by making the valve rod 3 draw back inwards, so that negative pressure for sucking back is formed on the liquid outlet 13, and residual liquid in the liquid outlet 13 is prevented from dripping down on the surface of a battery or equipment.
In an embodiment, as shown in fig. 1 and fig. 2, a first sealing ring 4 is disposed on the housing 1 at a position corresponding to the liquid outlet 13.
When the valve rod 3 is at the plugging position, the second end 32 abuts against the first sealing ring 4. When the valve rod 3 is at the liquid injection position, a liquid flowing gap is formed between the inner wall of the first sealing ring 4 and the valve rod 3 so as to allow liquid to pass through.
By arranging the first sealing ring 4, the tightness of the liquid outlet 13 is further improved, and a back suction negative pressure is formed at the liquid outlet 13.
In one embodiment, as shown in fig. 1 and 2, the pressing mechanism 2 includes a valve body 21, a valve cover 22, an elastic member 23, and a pressing assembly 24 having a button, wherein the valve body 21 is mounted on the housing 1 and partially extends into the injection cavity 11, the pressing assembly 24 is mounted on the valve body 21, and the button is exposed from the valve body 21. The valve cover 22 is connected with the part of the valve body 21 extending into the liquid injection cavity 11.
The first end 31 sequentially passes through the valve cover 22 and the valve body 21 to be connected with the pressing assembly 24, and the elastic piece 23 is elastically supported between the first end 31 and the valve cover 22 along the axial direction of the valve rod 33, so that the valve rod 3 is communicated with the pressing mechanism 2.
When the priming device is used, the valve rod 3 can be stopped at the priming position or the blocking position by pressing the button of the pressing assembly 24 once, so that the blocking or releasing of the liquid outlet 13 is realized. The elastic member 23 is used for resetting the valve rod 3 (from the injection position to the blocking position).
In one embodiment, the push assembly 24 may be a push pen push assembly, which enables push actuation. The pen-type pressing component refers to a pressing component adopted in a pressing pen.
In an embodiment, as shown in fig. 1 and 2, an annular protrusion 311 is formed on an outer wall of the first end 31, and the elastic member 23 is elastically supported between the annular protrusion 311 and the valve cover 22 along an axial direction of the valve rod 33, so as to reset the valve rod 33.
In one embodiment, as shown in fig. 1 and 2, a second sealing ring 5 is disposed between the valve stem 33 and the valve cover 22. The second sealing ring 5 is used for sealing between the valve rod 33 and the valve cover 22, and preventing the liquid in the liquid injection cavity 11 from entering between the valve body 21 and the valve cover 22.
A third sealing ring 6 is arranged between the valve body 21 and the housing 1. The third sealing ring 6 is used for sealing between the valve body 21 and the housing 1, preventing external air from entering the housing 1, and simultaneously preventing liquid in the liquid injection cavity 11 from flowing out of the housing 1 from between the valve body 21 and the housing 1.
In one embodiment, as shown in fig. 1 and 2, the pressing mechanism 2 further includes a pressing cover 25, the pressing cover 25 is mounted on the valve body 21, and the button is exposed from the pressing cover 25.
The pressing cover 25 may cooperate with the valve body 21 to limit the pressing assembly 24, and the button is exposed from the pressing cover 25, so as to realize pressing driving.
In an embodiment, as shown in fig. 1 and 2, the liquid injection device further includes a liquid injection valve nozzle 7 and a liquid injection nozzle 8, the liquid injection valve nozzle 7 is installed between the housing 1 and the liquid injection nozzle 8, and a flow channel of the liquid injection valve nozzle 7 is communicated between a flow channel of the liquid injection nozzle 8 and the liquid outlet 13.
The liquid injection valve nozzle 7 and the liquid injection glue nozzle 8 form a liquid injection nozzle of the liquid injection device, and the liquid flowing out from the liquid outlet 13 can flow out through a flow passage of the liquid injection valve nozzle 7 and a flow passage of the liquid injection glue nozzle 8. When the liquid outlet is plugged, as the liquid injection nozzle has little sealing leakage residual liquid and no liquid drop, the crystallization of the waste liquid on the surface of the liquid injection nozzle is reduced, thereby reducing the cleaning times of the liquid injection nozzle 8.
In an embodiment, as shown in fig. 1 and 2, the casing 1 is further provided with a vacuum-pumping port 14 that communicates with the liquid-injecting cavity 11. The vacuum-pumping port 14 is used for pumping vacuum.
In an embodiment, as shown in fig. 1, the casing 1 includes a first cover plate 15, a second cover plate 16, and a side wall plate 17 connected between the first cover plate 15 and the second cover plate 16, the liquid injection cavity 11 is enclosed between the first cover plate 15, the second cover plate 16, and the side wall plate 17, the liquid inlet 12 and the vacuumizing port 14 are disposed on the first cover plate 15, and the liquid outlet 13 is disposed on the second cover plate 16, so as to form the casing 1. The pressing mechanism 2 is mounted on the first cover plate 15, so that the pressing mechanism 2 is mounted.
Preferably, the sequential surface of the second cover plate 16 facing the first cover plate 15 is provided with a chamfer surface 161 inclined toward the liquid outlet 13, so that the liquid in the liquid injection cavity 11 is converged to the liquid outlet 13 through the chamfer surface 161.
The working process of the liquid injection device provided by the embodiment of the utility model is as follows:
the preparation stage: after the battery clamp module enters the liquid injection station, the liquid injection device descends to enable the liquid injection glue nozzle 8 to be in sealing fit with a liquid injection port of a battery, and then the pressing mechanism 2 is pressed to enable the valve rod 3 to move to a liquid injection position, and the liquid outlet 13 is opened. And (3) sealing and attaching the liquid injection pump interface with the liquid inlet 12, and sealing and attaching the vacuum pump interface with the liquid injection cup vacuumizing interface.
And (3) liquid injection stage: the vacuum valve is opened to begin evacuating the battery interior and the filling chamber 11. When the vacuum degree reaches-80 KPa, the vacuum valve is closed, the diaphragm valve of the liquid injection pump is opened, and liquid injection is started. After the liquid injection is completed, the liquid injection pump interface and the vacuum interface are removed, and the liquid injection device enters the vacuum standing cavity along with the battery to stand.
And (3) blanking: after standing, the liquid injection device enters a blanking station along with the battery. And the pressing mechanism 2 is pressed again, so that the valve rod 3 moves to the blocking position, and the liquid outlet 13 is closed. And then the liquid injection device and the battery are separated, the liquid injection device moves into a cleaning station, and the battery core enters a discharging station, so that the operation is circulated.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (10)
1. The liquid injection device is characterized by comprising a shell, a pressing mechanism and a valve rod, wherein a liquid injection cavity, a liquid inlet and a liquid outlet which are communicated with the liquid injection cavity are formed in the shell;
when the valve rod is positioned at the blocking position, the valve rod blocks the liquid outlet, and liquid in the liquid injection cavity cannot flow out through the liquid outlet;
when the valve rod is positioned at the liquid injection position, the valve rod releases the blocking of the liquid outlet, and liquid in the liquid injection cavity can flow out through the liquid outlet.
2. The priming device of claim 1, wherein the valve stem comprises a first end, a second end, and a connection between the first end and the second end, the first end being positioned within the priming chamber and interfacing with the pressing mechanism, the second end protruding out of the housing through the outlet;
when the valve rod is positioned at the blocking position, the second end part blocks the liquid outlet;
when the valve rod is positioned at the liquid injection position, the second end part is far away from the liquid outlet.
3. The priming device of claim 2, wherein a first seal ring is disposed on the housing at a location corresponding to the outlet;
when the valve rod is positioned at the plugging position, the second end part is propped against the first sealing ring;
when the valve rod is positioned at the liquid injection position, a liquid flowing gap is formed between the inner wall of the first sealing ring and the valve rod.
4. The priming device of claim 2, wherein the pressing mechanism comprises a valve body mounted on the housing and extending partially into the priming chamber, a valve cap, an elastic member, and a pressing assembly having a button, the pressing assembly being mounted on the valve body with the button exposed to the valve body; the valve cover is connected with the part of the valve body extending into the liquid injection cavity;
the first end part sequentially penetrates through the valve cover and the valve body to be connected with the pressing assembly, and the elastic piece is elastically supported between the first end part and the valve cover along the axial direction of the valve rod.
5. The priming device of claim 4, wherein the pressing assembly is a pressing pen pressing assembly.
6. The priming device of claim 4, wherein an outer wall of the first end portion is formed with an annular protrusion, and wherein the resilient member is resiliently supported between the annular protrusion and the valve cap in an axial direction of the valve stem.
7. The priming device of claim 4, wherein a second seal ring is disposed between the valve stem and the valve cap;
and a third sealing ring is arranged between the valve body and the shell.
8. The priming device of claim 4, wherein the pressing mechanism further comprises a gland mounted on the valve body, the button being exposed to the gland.
9. The priming device of claim 1, further comprising a priming valve nozzle and a priming nozzle, the priming valve nozzle being mounted between the housing and the priming nozzle, and a runner of the priming valve nozzle communicating between a runner of the priming nozzle and the outlet.
10. The priming device of claim 1, wherein the housing is further provided with a vacuum port in communication with the priming chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321565687.4U CN219917542U (en) | 2023-06-19 | 2023-06-19 | Liquid injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321565687.4U CN219917542U (en) | 2023-06-19 | 2023-06-19 | Liquid injection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219917542U true CN219917542U (en) | 2023-10-27 |
Family
ID=88463882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321565687.4U Active CN219917542U (en) | 2023-06-19 | 2023-06-19 | Liquid injection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219917542U (en) |
-
2023
- 2023-06-19 CN CN202321565687.4U patent/CN219917542U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |