CN220021560U - Liquid filling plug for battery - Google Patents
Liquid filling plug for battery Download PDFInfo
- Publication number
- CN220021560U CN220021560U CN202321414297.7U CN202321414297U CN220021560U CN 220021560 U CN220021560 U CN 220021560U CN 202321414297 U CN202321414297 U CN 202321414297U CN 220021560 U CN220021560 U CN 220021560U
- Authority
- CN
- China
- Prior art keywords
- liquid
- tubular body
- plug
- liquid injection
- battery
- 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.)
- Active
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 148
- 238000002347 injection Methods 0.000 claims abstract description 79
- 239000007924 injection Substances 0.000 claims abstract description 79
- 238000003825 pressing Methods 0.000 claims abstract description 22
- 238000003860 storage Methods 0.000 claims abstract description 12
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 239000000945 filler Substances 0.000 claims 10
- 239000003792 electrolyte Substances 0.000 abstract description 28
- 238000000034 method Methods 0.000 abstract description 9
- 238000007789 sealing Methods 0.000 abstract description 6
- 238000003466 welding Methods 0.000 abstract description 5
- 238000004140 cleaning Methods 0.000 abstract description 4
- 230000005484 gravity Effects 0.000 abstract description 4
- 239000000243 solution Substances 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 241000167857 Bourreria Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005429 filling process Methods 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
- 239000003960 organic solvent 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
- Filling, Topping-Up Batteries (AREA)
Abstract
The utility model relates to the technical field of batteries, and discloses a liquid filling plug for a battery, which comprises the following components: the joint is provided with a liquid inlet channel and is used for being communicated with a liquid injection pipe of the liquid injection machine in a matched manner; the plug body is provided with a liquid outlet channel and is used for being communicated with a liquid injection port of the battery in a matched manner; the pressing gasbag is provided with a liquid storage cavity with an upper opening end and a lower opening end, the upper opening end is communicated with an outlet of a liquid inlet channel of the connector, and the lower opening end is communicated with an inlet of a liquid outlet channel of the plug body. According to the liquid injection plug, after the liquid injection process is completed, residual electrolyte in the liquid outlet channel of the plug body can be sucked back to the liquid storage cavity provided by the pressing air bag through vacuumizing force to be stored, so that the residual electrolyte is effectively prevented from flowing out under the action of gravity, the probability of pollution of the residual electrolyte to the liquid injection port is reduced, and further the cleaning cost is reduced, and good welding performance of the position of the subsequent liquid injection port and the sealing nails is guaranteed.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a liquid filling plug for a battery.
Background
The electrolyte is a colorless transparent organic solvent, and is used as a carrier for ion transmission in the battery, thereby playing a vital role in the performance of the battery. In the production process of the battery, the battery core is sealed in the shell, the liquid injection hole is reserved in the shell, then electrolyte is injected into the battery through the liquid injection hole to infiltrate with the battery core, and finally the liquid injection hole is sealed.
Because the liquid injection ports of some batteries are smaller, the injection process of the electrolyte is difficult, and the current common liquid injection mode is as follows: electrolyte is injected into the battery by using the electrolyte injection plug. However, the liquid outlet at the bottom end of the conventional liquid injection plug and the liquid injection port of the battery are generally in contact with each other through extrusion, so that the following defects exist:
part of electrolyte is easy to remain near the liquid injection port of the battery, so that the liquid injection port needs to be cleaned immediately after primary liquid injection and secondary liquid injection, otherwise, serious pollution is caused to the liquid injection port;
to ensure good welding performance, the welding position of the liquid filling port needs to be cleaned again before the sealing nail is welded, and in this case, a manual wiping process is usually added, which increases the labor cost.
Disclosure of Invention
The utility model aims to provide a liquid injection plug for a battery, which solves the problems that the liquid injection port is easy to be polluted and the cleaning cost is high due to the fact that part of electrolyte is easy to remain near the liquid injection port in the conventional liquid injection plug.
To achieve the purpose, the utility model adopts the following technical scheme:
a liquid-filling plug for a battery, comprising:
the joint is provided with a liquid inlet channel and is used for being communicated with a liquid injection pipe of the liquid injection machine in a matched manner;
the plug body is provided with a liquid outlet channel and is used for being communicated with a liquid injection port of the battery in a matched manner;
the pressing gasbag is provided with a liquid storage cavity with an upper opening end and a lower opening end, the upper opening end is communicated with an outlet of a liquid inlet channel of the connector, and the lower opening end is communicated with an inlet of a liquid outlet channel of the plug body.
Optionally, the compression balloon includes at least one layer of compression structure.
Optionally, the connector includes a first tubular body, and a through hole is formed in the center of the first tubular body and is used as the liquid inlet channel.
Optionally, the diameter of the through hole formed in the center of the first tubular body is larger than the diameter of the liquid injection port.
Optionally, the connector further includes a positioning portion protruding on the first tubular body.
Optionally, the positioning part is a clamping ring for clamping with the liquid injection pipe.
Optionally, the plug body includes a second tubular body and a third tubular body; the upper end of the second tubular body is communicated with the lower opening end of the pressing air bag, and the lower end of the second tubular body is communicated with the upper end of the third tubular body.
Optionally, the outer ring diameter of the second tubular body is larger than the diameter of the liquid injection port, and the outer ring diameter of the third tubular body is not larger than the inner diameter of the liquid injection port.
Optionally, the inner ring diameter of the second tubular body is equal to the inner ring diameter of the third tubular body.
Optionally, the connector, the pressing air bag and the plug body are integrally formed.
Compared with the prior art, the embodiment of the utility model has the following beneficial effects:
unlike conventional liquid filling plugs, the liquid filling plug provided by the embodiment of the utility model is provided with a pressing air bag between the connector and the plug body; based on the above, the liquid injection operation flow of the liquid injection plug is as follows: before the liquid injection starts, aligning the plug body with the liquid injection port, and pressing down the liquid injection plug to press the air bag to compress and discharge the gas in the liquid storage cavity so as to generate vacuumizing force; in the liquid injection process, electrolyte enters through a liquid inlet channel of the connector, and after the air bag is pressed, the electrolyte flows into a liquid injection port of the battery through a liquid outlet channel of the plug body; after the liquid injection is completed, the liquid injection plug is lifted up, so that the pressing air bag is unfolded, and meanwhile, residual electrolyte in the liquid outlet channel of the plug body is sucked back to the liquid storage cavity through the vacuumizing force. Therefore, the liquid filling plug of this embodiment can store the residual electrolyte in the liquid outlet channel of the plug body to the liquid storage cavity provided by the pressing air bag through the vacuum pumping force after the liquid filling process is completed, so that the residual electrolyte is effectively prevented from flowing out under the action of gravity, the probability of polluting the liquid filling port by the residual electrolyte is reduced, and the cleaning cost is further reduced, and the good welding performance of the position of the subsequent liquid filling port and the sealing nail is guaranteed.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.
Fig. 1 is a perspective view of a liquid filling plug for a battery according to an embodiment of the present utility model;
fig. 2 is a cross-sectional view of a filling plug for a battery according to an embodiment of the present utility model;
fig. 3 is an application schematic diagram of a filling plug for a battery according to an embodiment of the present utility model.
Illustration of:
the connector 1, the liquid inlet channel 11, the first tubular body 12, the positioning part 13, the plug body 2, the liquid outlet channel 21, the second tubular body 22, the third tubular body 23, the pressing air bag 3, the liquid storage cavity 31, the liquid injection port 4 and the step hole 5.
Detailed Description
In order to make the objects, features and advantages of the present utility model more comprehensible, the technical solutions in the embodiments of the present utility model are described in detail below with reference to the accompanying drawings, and it is apparent that the embodiments described below are only some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the conventional technology, since the liquid outlet at the bottom end of the liquid injection plug is in extrusion contact with the liquid injection port 4 of the battery, after the liquid injection is completed, part of electrolyte remained in the liquid injection plug can flow out from the liquid outlet under the action of gravity in the process of removing the liquid injection plug from the upper part of the liquid injection port 4 and drop around the liquid injection port 4, so that the pollution of the liquid injection port 4 is caused. Therefore, the embodiment of the utility model provides a liquid filling plug for a battery, which solves the problem that partial electrolyte remained inside flows out rapidly by utilizing the vacuumizing principle.
Specifically, referring to fig. 1 and 2, a liquid filling plug for a battery according to an embodiment of the present utility model includes:
the joint 1 is provided with a liquid inlet channel 11 for being communicated with a liquid injection pipe of the liquid injection machine in a matching way;
the plug body 2 is provided with a liquid outlet channel 21 for being communicated with the liquid injection port 4 of the battery in a matching way;
the pressing air bag 3 is provided with a liquid storage cavity 31 having an upper opening end and a lower opening end, the upper opening end is communicated with the outlet of the liquid inlet channel 11 of the joint 1, and the lower opening end is communicated with the inlet of the liquid outlet channel 21 of the plug body 2.
Unlike conventional liquid filling plugs, the liquid filling plug provided by the embodiment of the utility model is provided with the pressing air bag 3 between the connector 1 and the plug body 2; based on the above, the liquid injection operation flow of the liquid injection plug is as follows:
before the liquid injection starts, the plug body 2 is aligned with the liquid injection port 4, and the liquid injection plug is pressed down to press the air bag 3 to compress and discharge the gas in the liquid storage cavity 31 so as to generate vacuumizing force;
in the process of filling, electrolyte can enter through the liquid inlet channel 11 of the connector 1, and after the air bag 3 is pressed, the electrolyte flows into the liquid filling port 4 of the battery through the liquid outlet channel 21 of the plug body 2;
after the injection is completed, the injection plug is lifted up to expand the pressing airbag 3, and meanwhile, the electrolyte remained in the liquid outlet channel 21 of the plug body 2 is sucked back to the liquid storage cavity 31 by the vacuumizing force.
Therefore, after the liquid injection process is completed, the electrolyte remained in the liquid outlet channel 21 of the plug body 2 can be sucked back to the liquid storage cavity 31 provided by the pressing air bag 3 by the vacuumizing force to be stored, so that the residual electrolyte is effectively prevented from flowing out under the action of gravity, the probability that the residual electrolyte pollutes the liquid injection port 4 is reduced, the cleaning cost is further reduced, and the good welding performance of the position of the subsequent liquid injection port 4 and the sealing nails is guaranteed.
In an alternative embodiment, the pressing airbag 3 may include only one layer of compression structure, as shown in fig. 1 and 2, or may include two or more layers of compression structures stacked on each other. It can be understood that when the multi-layer compression structure is adopted, the greater the maximum vacuum pumping force which can be generated by pressing the air bag 3, the strong back suction function can be realized on the residual electrolyte.
The joint 1 is used for being communicated with a liquid injection pipe of a liquid injection machine in a matching way, and can comprise a first tubular body 12, wherein a through hole is formed in the center of the first tubular body 12 and is used as a liquid inlet channel 11; the joint 1 may further comprise a positioning portion 13 protruding on the first tubular body 12, where the positioning portion 13 is used to achieve a relative positioning of the joint 1 and the filling pipe of the filling machine. Illustratively, the positioning portion 13 is specifically a clamping ring for clamping with the liquid injection tube.
The plug body 2 is used for being matched and communicated with a liquid injection port 4 of the battery, and can comprise a second tubular body 22 and a third tubular body 23; the upper end of the second tubular body 22 communicates with the lower open end of the pressing balloon 3, and the lower end of the second tubular body 22 communicates with the upper end of the third tubular body 23. Further, the outer diameter of the second tubular body 22 is larger than the diameter of the pouring port 4, and the outer diameter of the third tubular body 23 is not larger than the diameter of the pouring port 4.
In this way, in the pouring operation, the bottom end of the second tubular body 22 can be abutted against the end face of the pouring port 4, and the second tubular body 22 can be completely inserted into the pouring port 4. Like this, second tubular body 22 is as the liquid head, because this liquid head stretches into annotating liquid mouth 4 completely, consequently can guarantee that the export of liquid head is located annotating liquid mouth 4 below to can avoid by the electrolyte that liquid head flow out and annotate liquid mouth 4 and take place to contact, guarantee to annotate liquid in-process liquid head and can not cause any pollution to annotating liquid mouth 4.
For example, referring to fig. 3, a step hole 5 is formed in the battery case, and a liquid injection port 4 is formed in the center of the bottom of the step hole 5. In applying the pouring stopper of the present embodiment, the outer ring diameter of the second tubular body 22 may be designed to be substantially equal to the aperture of the stepped hole 5, the outer ring diameter of the third tubular body 23 may be designed to be not larger than the inner diameter of the pouring spout 4, and the second tubular body 22 and the third tubular body 23 may be coaxially arranged. Therefore, during the liquid injection operation, the second tubular body 22 is in extrusion contact with the hole wall of the step hole 5 so as to realize the sealing connection between the second tubular body and the step hole, and meanwhile, the third tubular body 23 can be aligned to extend into the liquid injection hole 4, so that the operation is simple and efficient.
In addition, in order to improve the liquid injection efficiency, the diameter of the through hole formed in the center of the first tubular body 12 is larger than the diameter of the liquid injection port 4, so that a larger liquid injection flow rate can be realized. Meanwhile, in order to reduce the pollution caused by the splashing of the electrolyte to the liquid injection port 4 due to overlarge liquid injection flow in the liquid injection process, the diameter of the inner ring of the second tubular body 22 in the plug body 2 is equal to that of the inner ring of the third tubular body 23, so that the flow rate of the electrolyte in the plug body 2 can be slowed down and kept at a constant speed.
In the embodiment of the present utility model, the pressing air bag 3 may be made of a plastic material capable of compression deformation and self-rebound, and the connector 1 and the plug body 2 may be made of plastic materials, which is not particularly limited in the embodiment of the present utility model. In order to improve the processing efficiency and the sealing performance of the joints of all parts, the joint 1, the pressing air bag 3 and the plug body 2 can be integrally formed.
The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; 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 described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (10)
1. A liquid filling plug for a battery, comprising:
the joint (1) is provided with a liquid inlet channel (11) for being communicated with a liquid injection pipe of the liquid injection machine in a matching way;
the plug body (2) is provided with a liquid outlet channel (21) for being communicated with a liquid injection port (4) of the battery in a matching way;
the air bag (3) is pressed, a liquid storage cavity (31) with an upper opening end and a lower opening end is provided, the upper opening end is communicated with the outlet of the liquid inlet channel (11) of the joint (1), and the lower opening end is communicated with the inlet of the liquid outlet channel (21) of the plug body (2).
2. The filling plug for batteries according to claim 1, characterized in that said pressing balloon (3) comprises at least one layer of compression structure.
3. The filling plug for a battery according to claim 1, wherein the joint (1) comprises a first tubular body (12), and a through hole is formed in the center of the first tubular body (12) as the liquid inlet channel (11).
4. A battery filler plug according to claim 3, wherein the diameter of the through hole formed in the center of the first tubular body (12) is larger than the diameter of the filler port (4).
5. A battery filler plug according to claim 3, wherein the joint (1) further comprises a positioning portion (13) protruding on the surface of the first tubular body (12) in the outer circumferential direction of the first tubular body (12).
6. The battery filler neck according to claim 5, wherein the positioning portion (13) is a retainer ring for engagement with the filler neck.
7. A filling plug for batteries according to claim 3, characterized in that said plug body (2) comprises a second tubular body (22) and a third tubular body (23); the upper end of the second tubular body (22) is communicated with the lower opening end of the pressing air bag (3), and the lower end of the second tubular body (22) is communicated with the upper end of the third tubular body (23).
8. The battery filler plug according to claim 7, wherein the outer ring diameter of the second tubular body (22) is larger than the diameter of the filler port (4), and the outer ring diameter of the third tubular body (23) is not larger than the inner diameter of the filler port (4).
9. The battery filler plug according to claim 7, wherein the inner ring diameter of the second tubular body (22) is equal to the inner ring diameter of the third tubular body (23).
10. The battery filler plug according to claim 1, wherein the joint (1), the pressing airbag (3) and the plug body (2) are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321414297.7U CN220021560U (en) | 2023-06-05 | 2023-06-05 | Liquid filling plug for battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321414297.7U CN220021560U (en) | 2023-06-05 | 2023-06-05 | Liquid filling plug for battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220021560U true CN220021560U (en) | 2023-11-14 |
Family
ID=88674395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321414297.7U Active CN220021560U (en) | 2023-06-05 | 2023-06-05 | Liquid filling plug for battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220021560U (en) |
-
2023
- 2023-06-05 CN CN202321414297.7U patent/CN220021560U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |