CN218919252U - Plugging device for liquid injection port of power battery - Google Patents
Plugging device for liquid injection port of power battery Download PDFInfo
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- CN218919252U CN218919252U CN202223082262.6U CN202223082262U CN218919252U CN 218919252 U CN218919252 U CN 218919252U CN 202223082262 U CN202223082262 U CN 202223082262U CN 218919252 U CN218919252 U CN 218919252U
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- liquid injection
- device body
- injection port
- liquid
- power battery
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- 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
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Abstract
The utility model discloses a plugging device for a liquid injection port of a power battery, which is used for plugging the liquid injection port on a power battery cover plate and comprises the following components: the device comprises a device body, wherein a first end and a second end are respectively formed at two sides of the device body, and a connecting part used for being connected with the liquid injection port is arranged outside the device body in the circumferential direction of the device body; the elastic unit is arranged in the device body and is made of elastic rubber; the liquid injection unit is provided with a needle head part and a liquid storage cavity communicated with the needle head part, the needle head part can penetrate through the elastic unit, and a liquid outlet hole is formed in one end, far away from the liquid storage cavity, of the needle head part. The utility model ensures that the performance of the power battery is more stable, the existing cover plate does not need to be improved, and the whole plugging device is energy-saving and efficient and has reliable plugging performance. In addition, the effect of conveniently and rapidly replacing or updating the electrolyte can be realized.
Description
Technical Field
The utility model relates to the field of power battery parts, in particular to a plugging device for a liquid injection port of a power battery.
Background
With the large-scale advent of electric vehicles, power batteries used in electric vehicles have also become a key to the development of power vehicles. The power battery in the prior art is shown in fig. 1, and mainly comprises a pipe body and a cover plate connected with the pipe body, wherein the key step of the power battery is to fill electrolyte into the pipe body, and the mode adopted at present is to provide a liquid filling port on the cover plate, and after the electrolyte is filled into the cover plate, the liquid filling port is welded and plugged, so that the effect of sealing the electrolyte into the pipe body is realized. However, in the prior art, a welding mode is required to be adopted in the plugging process, and heat generated in the welding process can cause irreversible influence and damage to the quality of the electrolyte, so that the power battery cannot achieve the optimal performance. In addition, due to the irreversibility of the welding mode, when the electrolyte needs to be replaced or filled, the power battery in the prior art is difficult to achieve the corresponding effect, so that the problem of low reusability exists.
Disclosure of Invention
In order to overcome the defects in the prior art, embodiments of the present utility model provide a power battery liquid injection port plugging device, which is used for solving one or more of the above problems.
The embodiment of the application discloses: a power battery annotates liquid mouth plugging device for annotate liquid mouth to power battery and carry out shutoff on the apron, include: the device comprises a device body, wherein a first end and a second end are respectively formed at two sides of the device body, a connecting part used for being connected with the liquid injection port is arranged outside the device body in the circumferential direction of the device body, the device body is internally and thoroughly arranged, and after the liquid injection port is connected with the connecting part, the liquid injection port is closed with the connecting part; the elastic unit is arranged in the device body and is made of elastic rubber, and two sides of the elastic unit are respectively communicated with the first end and the second end; the liquid injection unit is provided with a needle head part and a liquid storage cavity communicated with the needle head part, the needle head part can penetrate through the elastic unit, and a liquid outlet hole is formed in one end, far away from the liquid storage cavity, of the needle head part; after the needle head penetrates through the elastic unit, the liquid outlet hole and the liquid storage cavity are respectively positioned at two sides of the elastic unit.
Further, the elastic unit is a fluorosilicone rubber piece.
Further, the elastic unit is provided with a plurality of layers, and the elastic units of the plurality of layers are stacked in the thickness direction of the device body.
Further, the elastic unit is in press-riveting connection with the device body.
Further, the connecting part is connected with the liquid injection port in a riveting mode.
Further, the connecting portion is arranged between the first end and the second end, the connecting portion is connected with the liquid injection port in a turning and riveting mode, and after the turning and riveting mode, the device body around the first end forms a turned edge.
Further, the connecting portion is provided with threads, and the connecting portion is in threaded connection with the liquid injection port.
The beneficial effects of the utility model are as follows:
1. the plugging device can be connected with the mounting port firstly, so that after electrolyte is filled, the risk of irreversible influence and damage to the quality of the electrolyte caused by welding heat is avoided, the performance of the power battery is further stable, the existing cover plate is not required to be improved, and the whole plugging device is energy-saving, efficient and reliable in plugging performance. In addition, the effect of conveniently and rapidly replacing or updating the electrolyte can be realized.
2. Because the fluorosilicone rubber piece has better corrosion resistance and high and low temperature, and the elasticity is better, the repeated utilization performance of the whole elastic unit is higher, and the service life of the whole plugging device is longer.
3. The arrangement of the elastic units in multiple layers can enable the formed tearing edges to be provided with multiple layers, and the tearing edges in multiple layers can form the lamination effect of the tearing edges in multiple layers after rebound, so that the elastic units after rebound have better sealing performance.
The foregoing and other objects, features and advantages of the utility model will be apparent from the following more particular description of preferred embodiments, as illustrated in the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a prior art power cell cover plate in accordance with an embodiment of the present utility model;
fig. 2 is a schematic cross-sectional view of a cover plate corresponding to a plugging device for a liquid inlet of a power battery in an embodiment of the utility model;
fig. 3 is a schematic structural diagram of a plugging device for a liquid injection port of a power battery before press riveting in an embodiment of the utility model;
fig. 4 is a schematic structural diagram of a plugging device for a liquid injection port of a power battery after press riveting in an embodiment of the utility model;
fig. 5 is a schematic structural diagram of a plugging device for a liquid injection port of a power battery before riveting in an embodiment of the utility model;
fig. 6 is a schematic structural diagram of a plugging device for a liquid injection port of a power battery after riveting in an embodiment of the utility model;
fig. 7 is a schematic structural diagram of a plugging device for a liquid injection port of a power battery in an embodiment of the present utility model when the plugging device is matched with a liquid injection unit after press riveting;
fig. 8 is a schematic structural diagram of a plugging device for a liquid injection port of a power battery in an embodiment of the present utility model when the plugging device is matched with a liquid injection unit after riveting;
FIG. 9 is a schematic diagram of a liquid injection unit according to an embodiment of the present utility model;
reference numerals of the above drawings: 1. a device body; 11. a first end; 12. a second end; 2. a connection part; 3. an elastic unit; 4. a cover plate; 5. a liquid injection port; 6. a liquid injection unit; 61. a needle portion; 611. a liquid outlet hole; 62. a liquid storage cavity.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. 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.
As shown in fig. 2 to 9, in this embodiment, the plugging device for a liquid injection port 5 of a power battery is used for plugging the liquid injection port 5 on a power battery cover plate 4, in this embodiment, the cross-sectional shape of the liquid injection port 5 is circular, and of course, in other alternative embodiments, the shape of the liquid injection port 5 may be adjusted according to actual needs. The occlusion device comprises:
the device body 1, a first end 11 and a second end 12 are respectively formed on two sides of the device body 1, in this embodiment, the first end 11 is an upper end in fig. 3 to 8, the second end 12 is a lower end in fig. 3 to 8, and in other alternative embodiments, specific positions of the first end 11 and the second end 12 may be adjusted according to actual needs. The device body 1 is externally provided with a connecting portion 2 for connecting with the liquid injection port 5 in the circumferential direction thereof, so that the device body 1 can be connected with the liquid injection port 5 in the circumferential direction thereof, and further the first end 11 and the second end 12 can be positioned on both sides of the liquid injection port 5, respectively. The connection part 2 may be riveted to the liquid filling port 5, and of course, in other alternative embodiments, the connection mode of the connection part 2 and the liquid filling port 5 may be other modes capable of being connected in a sealing manner. The inside setting can link up of device body 1, annotate liquid mouth 5 with connecting portion 2 are connected the back, annotate liquid mouth 5 with between the connecting portion 2 closed, thereby avoid electrolyte follow annotate liquid mouth 5 with connecting portion 2 intermediate outflow.
The elastic unit 3, the elastic unit 3 set up in inside the device body 1, the elastic unit 3 adopts elastic rubber to make, the both sides of elastic unit 3 respectively with first end 11 with second end 12 intercommunication, thereby make the elastic unit 3 can be in initial state with first end 11 with second end 12 keeps apart, thereby plays sealed electrolyte's effect.
The liquid injection unit 6, the liquid injection unit 6 has a needle portion 61 and a liquid storage cavity 62 communicated with the needle portion 61, electrolyte can be arranged in the liquid storage cavity 62, the needle portion 61 can penetrate through the elastic unit 3, one end of the needle portion 61 away from the liquid storage cavity 62 is provided with a liquid outlet hole 611, so that the liquid outlet hole 611 can be arranged along with the needle portion 61 on one side of the elastic unit 3 close to the second end 12, and the effect of filling or replacing electrolyte can be achieved by applying different directional pressures to the liquid storage cavity 62.
In this embodiment, before the electrolyte is filled, the connection portion 2 is already connected to the liquid filling port 5, and the needle portion 61 is used to penetrate the elastic unit 3, so that the liquid outlet hole 611 can be disposed along with the needle portion 61 on a side of the elastic unit 3 adjacent to the second end 12, and after the needle portion 61 penetrates the elastic unit 3, the liquid outlet hole 611 and the liquid storage cavity 62 are respectively located on two sides of the elastic unit 3, and in this process, the elastic unit 3 forms a tear edge around the needle portion 61. When electrolyte needs to be filled, positive pressure is applied to the liquid storage cavity 62, so that the electrolyte in the liquid storage cavity 62 can be filled into the inner side of the cover plate 4, namely into the pipe body of the power battery through the liquid outlet hole 611; when the electrolyte is required to be extracted, the liquid outlet hole 611 is in contact with the electrolyte inside the power battery, and a reverse pressure is applied to the liquid storage cavity 62, so that the electrolyte inside the liquid storage cavity 62 can be sucked out of the inner side of the cover plate 4 through the liquid outlet hole 611, namely, the electrolyte inside the pipe body of the power battery is sucked into the liquid storage cavity.
After filling or extracting the electrolyte, the needle portion 61 is removed from the elastic unit 3, and the tearing edges approach each other under the elastic recovery of the elastic material itself, so as to seal the area where the original needle portion 61 exists. Again achieving the effect of isolating said first end 11 from said second end 12. In addition, after the electrolyte is filled or replaced, the electrolyte fills the inside of the pipe body of the whole power battery, so that the liquid of the electrolyte can uniformly apply acting force to the elastic unit 3, and the elastic unit 3 can further achieve a resetting effect.
By means of the structure, the plugging device can be connected with the mounting port firstly, so that after electrolyte is filled, the risk of irreversible influence and damage to the quality of the electrolyte due to welding heat is avoided, the performance of the power battery is further stable, the existing cover plate 4 is not required to be improved, and the whole plugging device is energy-saving, efficient and reliable in plugging performance. In addition, the effect of conveniently and rapidly replacing or updating the electrolyte can be realized.
Specifically, the elastic unit 3 is a fluorosilicone rubber member. Because the fluorosilicone rubber piece has better corrosion resistance and high and low temperature, and the elasticity is better, the reusable performance of the whole elastic unit 3 is higher, and the service life of the whole plugging device is longer.
Specifically, the elastic unit 3 is provided with a plurality of layers, and the elastic units 3 of the plurality of layers are stacked in the thickness direction of the device body 1. In this embodiment, the elastic unit 3 has 3 layers, so that the cost is saved as much as possible on the premise of ensuring the sealing performance. Of course, in other alternative embodiments, the number of layers of the elastic unit 3 may be adjusted according to the actual situation. The arrangement of the elastic units 3 in multiple layers can enable the formed tearing edges to have multiple layers, and the tearing edges in multiple layers can form the lamination effect of the tearing edges in multiple layers after rebound, so that the elastic units 3 after rebound have better sealing performance.
Specifically, the elastic unit 3 is in press-riveting connection with the device body 1. Preferably, the device body 1 is press-riveted to an edge portion of the elastic unit 3. So that the elastic unit 3 can be positioned inside the device body 1 after caulking, and a good fixing effect can be provided for the elastic unit 3.
Specifically, the connecting part 2 is in press riveting connection with the liquid injection port 5. In this embodiment, the connecting portion 2 has a plurality of step surfaces that are outward from approaching the device body 1, and the step surfaces may be curved surfaces that are concave toward the inside thereof, so that after the press riveting connection, a holding position can be provided for the cover plate 4, and thus the connection effect of the connecting portion 2 and the liquid injection port 5 is better. In this embodiment, during the press-riveting process, the second end 12 first extends into the liquid injection port 5, and then the press-riveting is completed. By adopting the mode for connection, the mode that high temperature is generated by welding and the like can be avoided on the premise of ensuring the connection effect of the connecting part 2 and the liquid injection port 5, so that the effect of protecting the electrolyte inside the cover plate 4 can be achieved. In addition, the whole processing process does not have a welding process, and the qualification rate, the processing efficiency and the product cost of the power battery are greatly improved compared with the prior art.
Specifically, the connecting portion 2 is disposed between the first end 11 and the second end 12, so that the connecting portion 2 around the first end 11 may form a flange subsequently, the connecting portion 2 is in riveting connection with the liquid injection port 5, and after riveting, the device body 1 around the first end 11 forms a flange. In this embodiment, the connecting portion 2 has a plurality of step surfaces that are outward from approaching the device body 1, and the step surfaces may be curved surfaces that are concave toward the inside thereof, so that after the riveting connection, a holding position can be provided for the cover plate 4, and thus the connection effect of the connecting portion 2 and the liquid injection port 5 is better. In this embodiment, during the riveting process, the first end 11 first extends into the liquid injection port 5, then the riveting is completed, and then the cover plate 4 is connected with the pipe body. By adopting the mode for connection, the mode that high temperature is generated by welding and the like can be avoided on the premise of ensuring the connection effect of the connecting part 2 and the liquid injection port 5, so that the effect of protecting the electrolyte inside the cover plate 4 can be achieved.
Specifically, the connecting portion 2 has threads, and the connecting portion 2 is in threaded connection with the liquid injection port 5. By adopting the mode for connection, the mode that high temperature is generated by welding and the like can be avoided on the premise of ensuring the connection effect of the connecting part 2 and the liquid injection port 5, so that the effect of protecting the electrolyte inside the container 4 can be achieved.
The principles and embodiments of the present utility model have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present utility model; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present utility model, the present description should not be construed as limiting the present utility model in view of the above.
Claims (7)
1. The utility model provides a power battery annotates liquid mouth plugging device for annotate liquid mouth on the power battery apron and carry out shutoff, its characterized in that includes:
the device comprises a device body, wherein a first end and a second end are respectively formed at two sides of the device body, a connecting part used for being connected with the liquid injection port is arranged outside the device body in the circumferential direction of the device body, the device body is internally and thoroughly arranged, and after the liquid injection port is connected with the connecting part, the liquid injection port is closed with the connecting part;
the elastic unit is arranged in the device body and is made of elastic rubber, and two sides of the elastic unit are respectively communicated with the first end and the second end;
the liquid injection unit is provided with a needle head part and a liquid storage cavity communicated with the needle head part, the needle head part can penetrate through the elastic unit, and a liquid outlet hole is formed in one end, far away from the liquid storage cavity, of the needle head part;
after the needle head penetrates through the elastic unit, the liquid outlet hole and the liquid storage cavity are respectively positioned at two sides of the elastic unit.
2. The power cell liquid injection port plugging device according to claim 1, wherein the elastic unit is a fluorosilicone rubber member.
3. The power battery liquid inlet plugging device according to claim 1, wherein the elastic unit is provided with a plurality of layers, and the elastic units of the plurality of layers are stacked in a thickness direction of the device body.
4. The power battery liquid injection port plugging device according to claim 1, wherein the elastic unit is in press-riveting connection with the device body.
5. The power cell port plugging device according to claim 1, wherein the connection portion is pressure-riveted with the port.
6. The plugging device for the liquid injection port of the power battery according to claim 1, wherein the connecting portion is disposed between the first end and the second end, the connecting portion is in flip-rivet connection with the liquid injection port, and after flip-riveting, the device body around the first end forms a flange.
7. The power cell port closure device of claim 1, wherein the connection portion has threads, and wherein the connection portion is threadably connected to the port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223082262.6U CN218919252U (en) | 2022-11-21 | 2022-11-21 | Plugging device for liquid injection port of power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223082262.6U CN218919252U (en) | 2022-11-21 | 2022-11-21 | Plugging device for liquid injection port of power battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218919252U true CN218919252U (en) | 2023-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223082262.6U Active CN218919252U (en) | 2022-11-21 | 2022-11-21 | Plugging device for liquid injection port of power battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218919252U (en) |
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- 2022-11-21 CN CN202223082262.6U patent/CN218919252U/en active Active
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