CN216928891U - Battery liquid injection device - Google Patents
Battery liquid injection device Download PDFInfo
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- CN216928891U CN216928891U CN202220368295.8U CN202220368295U CN216928891U CN 216928891 U CN216928891 U CN 216928891U CN 202220368295 U CN202220368295 U CN 202220368295U CN 216928891 U CN216928891 U CN 216928891U
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model relates to the technical field of battery production, and discloses a battery liquid injection device which comprises a liquid injection seat and a liquid injection plug-in unit, wherein the liquid injection nozzle is provided with a liquid injection channel with two through ends, the liquid injection plug-in unit is provided with a plug-in unit channel with two through ends, the liquid injection plug-in unit can be inserted into a liquid injection hole of a battery, one end of the liquid injection nozzle is communicated with external equipment, the other end of the liquid injection nozzle is inserted into the plug-in unit channel, and electrolyte can enter the interior of the battery through the liquid injection channel. In addition, the outer side wall of the liquid injection plug-in unit is provided with a step part, the step part can be abutted against the cover plate provided with the liquid injection hole of the battery, so that the relative position of the liquid injection plug-in unit and the cover plate is kept unchanged, the plug-in unit channel comprises a first plug-in unit channel and a second plug-in unit channel, a step surface is formed between the first plug-in unit channel and the second plug-in unit channel, and the other end of the liquid injection nozzle is abutted against or not abutted against the step surface. The battery liquid injection device can solve the problem of electrolyte residue when the battery is injected for multiple times, and ensures the production quality of the battery.
Description
Technical Field
The utility model relates to the technical field of battery production, in particular to a battery liquid injection device.
Background
The electrolyte is an important component of the lithium ion battery, and the lithium battery liquid injection process can be generally divided into two steps, namely liquid injection for injecting the electrolyte into the battery and soaking for absorbing the injected electrolyte into the battery core. In order to achieve a good impregnation effect, the injection and impregnation are usually repeated several times.
And adopt notes liquid mouth direct contact battery to annotate the liquid hole and annotate liquid, cause electrolyte to remain easily, though be equipped with washing liquid washing and wipe dry technology, still have electrolyte or electrolyte crystallization to remain, easily lead to the sealed nail welding contact failure after the secondary is annotated. In addition, the battery needs to be injected with more electrolyte, so that the problem of electrolyte residue is more serious, and how to reduce or even eliminate the electrolyte pollution is particularly important on the premise of high liquid holding capacity.
Therefore, a battery electrolyte injection device is needed to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a battery liquid injection device, which is used for solving the problem of electrolyte residue when a battery is injected for multiple times and ensuring the production quality of the battery.
As the conception, the technical scheme adopted by the utility model is as follows:
a battery electrolyte injection device comprising:
the electrolyte injection nozzle is provided with an electrolyte injection channel with two through ends, and electrolyte can enter the interior of the battery through the electrolyte injection channel;
the liquid injection plug-in unit can be inserted into the liquid injection hole of the battery, the liquid injection plug-in unit is provided with a plug-in unit channel with two through ends, one end of the liquid injection nozzle is communicated with external equipment, and the other end of the liquid injection nozzle is inserted into the plug-in unit channel;
plug-in components passageway includes first plug-in components passageway and second plug-in components passageway, first plug-in components passageway with be formed with the ladder face between the second plug-in components passageway, annotate the other end butt of liquid mouth or do not the butt the ladder face, the lateral wall of annotating the liquid plug-in components has the step, the step can butt the battery is equipped with annotate the apron in liquid hole.
Optionally, the ladder face is on a parallel with apron place plane setting, the other end butt of annotating the liquid mouth the ladder face, annotate the liquid passageway intercommunication second plug-in components passageway.
Optionally, the ladder face be inclined to apron place plane setting, the plug-in components passageway still includes transition passageway, transition passageway's big footpath end intercommunication first plug-in components passageway, transition passageway's path end intercommunication second plug-in components passageway, the ladder face does the wall of transition passageway, the other end of annotating the liquid mouth is inserted and is located second plug-in components passageway.
Optionally, the other end of the liquid injection nozzle is positioned in the second insert channel; or
The other end of the liquid injection nozzle extends out of the second plug-in component channel and is positioned in the battery.
Optionally, the outer side wall of the liquid injection plug-in unit further comprises a first installation part and a second installation part which are connected through the step part, the second installation part is inserted into the liquid injection hole, the step part is provided with a first connection surface which is horizontally arranged, and the first connection surface can be completely abutted to the cover plate.
Optionally, the outer sidewall of the liquid injection plug-in unit further includes a first mounting portion and a second mounting portion connected through the step portion, the step portion has a second connection surface disposed obliquely, and the second connection surface partially abuts against the cover plate.
Optionally, an annular groove is disposed on the cover plate, and the step portion can be accommodated in the annular groove.
Optionally, the first mounting portion is a cylindrical structure or a prismatic structure.
Optionally, the liquid injection plug-in is made of a rigid corrosion-resistant material, and the outer diameter of the second installation part is 0.2-0.5mm smaller than the diameter of the liquid injection hole.
Optionally, the liquid injection plug-in unit is made of an elastic corrosion-resistant material, and the outer diameter of the second installation part is equal to the diameter of the liquid injection hole.
The utility model has the beneficial effects that:
the battery liquid injection device comprises a liquid injection nozzle and a liquid injection plug-in unit, wherein the liquid injection nozzle is provided with a liquid injection channel with two through ends, the liquid injection plug-in unit is provided with a plug-in unit channel with two through ends, the liquid injection plug-in unit can be inserted into a liquid injection hole of a battery, one end of the liquid injection nozzle is communicated with external equipment, the other end of the liquid injection nozzle can be inserted into the plug-in unit channel, and electrolyte can be injected into the battery through the liquid injection channel or the liquid injection channel and the plug-in unit channel. In addition, the outer side wall of the liquid injection plug-in unit is provided with a step part which can be abutted against a cover plate provided with a liquid injection hole of the battery so as to prevent the liquid injection plug-in unit from falling into the battery. The plug-in channel comprises a first plug-in channel and a second plug-in channel, a step surface is formed between the first plug-in channel and the second plug-in channel, and the other end of the liquid injection nozzle is abutted or not abutted against the step surface. The relative position relation of annotating liquid mouth and notes liquid plug-in components promptly inserts the other end butt ladder face of annotating the liquid mouth of locating in the plug-in components passageway promptly, annotates the liquid mouth promptly and is not located inside the battery, and inside electrolyte still need inject the battery through the plug-in components passageway. The other end of the liquid injection nozzle inserted into the plug-in channel is not abutted against the stepped surface, namely, the other end of the liquid injection nozzle is penetrated into the second liquid injection channel positioned in the battery. By utilizing the battery liquid injection device, the problem of electrolyte residue on the cover plate can be effectively solved, the welding quality is improved, and the battery quality is ensured.
Drawings
FIG. 1 is a schematic structural diagram of a first injection insert provided in an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a second injection insert provided in accordance with an embodiment of the present invention;
FIG. 3 is a schematic assembly diagram of a first battery liquid filling device and a battery provided by an embodiment of the utility model;
fig. 4 is an assembly schematic diagram of a second battery liquid filling device and a battery provided by the embodiment of the utility model.
In the figure:
1. a liquid injection nozzle;
2. a liquid injection plug-in; 20. a plug-in channel; 201. a first card channel; 202. a transition passage; 203. a second card channel; 21. a first mounting portion; 22. a step portion; 23. a second mounting portion;
3. a cover plate; 31. an annular groove.
Detailed Description
In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation that the first and second features are not in direct contact, but are in contact via another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to be limiting.
The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.
As shown in fig. 1 to 4, the present embodiment provides a battery liquid filling device, which is used for injecting electrolyte into a battery, and when the battery liquid filling device is inserted into a liquid injection hole of the battery for liquid injection, the battery liquid filling device can effectively avoid the situation that the electrolyte is sputtered or left around the liquid injection hole, thereby avoiding the problems of poor welding contact of a sealing nail after secondary liquid injection caused by residual electrolyte or electrolyte crystallization, preventing subsequent battery leakage, and improving the production quality of the battery.
Specifically, the battery liquid injection device comprises a liquid injection nozzle 1 and a liquid injection plug-in component 2, wherein the liquid injection nozzle 1 is provided with a liquid injection channel with two through ends, and electrolyte can be injected into the battery through the liquid injection channel during liquid injection. The liquid injection plug-in component 2 is provided with a plug-in component channel 20 with two through ends, one end of the liquid injection nozzle 1 is communicated with external equipment, the other end of the liquid injection nozzle can be inserted into the plug-in component channel 20, and when the liquid injection plug-in component 2 is inserted into a liquid injection hole of a battery, electrolyte can be injected into the battery through the liquid injection channel or the liquid injection channel and the plug-in component channel 20.
In order to limit the liquid injection plug-in unit 2 and the battery, so that the liquid injection plug-in unit 2 is clamped on the battery and cannot fall into the battery, the outer side wall of the liquid injection plug-in unit 2 is provided with a stepped part 22, and the stepped part 22 can abut against the cover plate 3 provided with the liquid injection hole of the battery. In addition, since the insert channel 20 needs to accommodate a small amount of electrolyte carried out by the pouring nozzle 1 when the pouring nozzle 1 is drawn out after the pouring is finished, the insert channel 20 includes a first insert channel 201 and a second insert channel 203, and a stepped surface is formed between the first insert channel 201 and the second insert channel 203. Optionally, the first card channel 201 is located outside the battery, the second card channel 203 is located in the liquid injection hole, and a cross-sectional area of the first card channel 201 that is not inserted inside the battery is larger than a cross-sectional area of the second card channel 203 that is inserted inside the battery, so as to achieve effective accommodation of the residual electrolyte.
Based on the structure of the liquid injection plug-in unit 2, the relative position relationship between the liquid injection nozzle 1 and the liquid injection plug-in unit 2 is also various, firstly, the other end of the liquid injection nozzle 1 inserted in the plug-in unit channel 20 is abutted against the stepped surface, namely, the liquid injection nozzle 1 is not positioned in the battery, and the electrolyte is injected into the battery through the plug-in unit channel 20. The other end of the liquid injection nozzle 1 inserted into the plug-in channel 20 is not abutted against the stepped surface, that is, the other end of the liquid injection nozzle 1 is inserted into the second plug-in channel 203 in the battery.
The structure of the filling insert 2 meeting the above requirements is different in practical applications, and preferably, the filling insert 2 having the same inner wall and outer wall structure is provided in this embodiment. Referring to fig. 1, the stepped surface is parallel to the plane of the cover plate 3, i.e. the liquid injection insert 2 is horizontally disposed on the stepped surface, the other end of the liquid injection nozzle 1 can abut against the stepped surface, and the liquid injection channel is communicated with the second insert channel 203. Preferably, the diameter of the liquid injection channel is less than or equal to the inner diameter of the second insert channel 203.
Optionally, as shown in fig. 2, the stepped surface is disposed obliquely to the plane where the cover plate 3 is located, the insert channel 20 further includes a transition channel 202 connecting the first insert channel 201 and the second insert channel 203, a large-diameter end of the transition channel 202 is communicated with the first insert channel 201, a small-diameter end of the transition channel 202 is communicated with the second insert channel 203, the stepped surface is a wall surface of the transition channel 202, and the other end of the liquid filling nozzle 1 is inserted into the second insert channel 203.
Further, the other end of the pouring nozzle 1 inserted into the second insert passage 203 may be located inside the second insert passage 203, or may extend out of the second insert passage 203 and be located directly inside the battery.
Optionally, for the liquid injection insert 2 with the structure of the outer wall and the inner wall being more consistent, the outer side wall of the liquid injection insert 2 further includes a first mounting portion 21 and a second mounting portion 23 connected by a step portion 22, the first mounting portion 21 corresponds to the first insert channel 201, the second mounting portion 23 corresponds to the second insert channel 203, that is, the first insert channel 201 penetrates through the first mounting portion 21, the second insert channel 203 penetrates through the second mounting portion 23, the step portion 22 has a first connecting surface arranged in parallel with the step surface, and the first connecting surface can completely abut against the cover plate 3.
Alternatively, for another structure of the liquid injection insert 2 having the transition channel 202, the outer side wall of the liquid injection insert 2 further comprises a first mounting part 21 and a second mounting part 23 connected by a step part 22, and the step part 22 has an obliquely arranged second connecting surface which can partially abut against the cover plate 3.
Optionally, the cover plate 3 is provided with an annular recess 31 to facilitate subsequent welding, and the step 22 can be housed in the annular recess 31.
Optionally, because the second installation portion 23 is inserted into the liquid injection hole, the second installation portion 23 is adapted to the shape of the liquid injection hole, the second installation portion 23 is of a cylindrical structure, and the first installation portion 21 has no corresponding requirement. The first mounting portion 21 may have a cylindrical structure or a prismatic structure.
Alternatively, the filling insert 2 is made of a rigid corrosion resistant material, such as stainless steel, and the outer diameter of the second mounting portion 23 is 0.2-0.5mm smaller than the diameter of the filling hole. Preferably, the filling insert 2 of the present embodiment is adapted to a filling hole having a diameter of 2.2-3 mm.
Alternatively, the liquid injection insert 2 is made of an elastic corrosion-resistant material, such as silicone rubber, glass, PPPE (polyethylene resin), PVC (polyvinyl chloride), PTFE (polytetrafluoroethylene), etc., and the outer diameter of the second mounting portion 23 is equal to the diameter of the liquid injection hole.
The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but rather is susceptible to various changes and modifications without departing from the spirit and scope of the utility model, which changes and modifications are within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (10)
1. A battery electrolyte injection device, comprising:
the electrolyte injection nozzle (1) is provided with an electrolyte injection channel with two through ends, and electrolyte can enter the battery through the electrolyte injection channel;
the liquid injection plug-in (2) can be inserted into the liquid injection hole of the battery, the liquid injection plug-in (2) is provided with a plug-in channel (20) with two through ends, one end of the liquid injection nozzle (1) is communicated with external equipment, and the other end of the liquid injection nozzle is inserted into the plug-in channel (20);
plug-in components passageway (20) includes first plug-in components passageway (201) and second plug-in components passageway (203), first plug-in components passageway (201) with be formed with the ladder face between second plug-in components passageway (203), annotate the other end butt of liquid mouth (1) or not butt the ladder face, the lateral wall of annotating liquid plug-in components (2) has step (22), step (22) can butt the battery is equipped with annotate apron (3) of liquid hole.
2. The battery electrolyte injection device according to claim 1, wherein the stepped surface is parallel to the plane of the cover plate (3), the other end of the electrolyte injection nozzle (1) abuts against the stepped surface, and the electrolyte injection channel is communicated with the second plug-in channel (203).
3. The battery liquid filling device according to claim 1, wherein the stepped surface is inclined to the plane where the cover plate (3) is located, the insert channel (20) further includes a transition channel (202), a large-diameter end of the transition channel (202) is communicated with the first insert channel (201), a small-diameter end of the transition channel (202) is communicated with the second insert channel (203), the stepped surface is a wall surface of the transition channel (202), and the other end of the liquid filling nozzle (1) is inserted into the second insert channel (203).
4. The battery filling device according to claim 3, wherein the other end of the filling nozzle (1) is positioned in the second insert channel (203); or
The other end of the liquid injection nozzle (1) extends out of the second plug-in component channel (203) and is positioned in the battery.
5. The battery liquid injection device according to claim 1, wherein the outer side wall of the liquid injection plug-in component (2) further comprises a first installation part (21) and a second installation part (23) which are connected through the step part (22), the second installation part (23) is inserted into the liquid injection hole, the step part (22) is provided with a horizontally arranged first connection surface, and the first connection surface can completely abut against the cover plate (3).
6. The battery liquid injection device according to claim 1, wherein the outer side wall of the liquid injection plug-in component (2) further comprises a first mounting part (21) and a second mounting part (23) which are connected through the step part (22), the step part (22) is provided with a second connecting surface which is obliquely arranged, and the second connecting surface partially abuts against the cover plate (3).
7. The battery electrolyte injection device according to claim 5 or 6, characterized in that the cover plate (3) is provided with an annular groove (31), and the step part (22) can be accommodated in the annular groove (31).
8. The battery liquid filling device according to claim 5 or 6, wherein the first mounting portion (21) has a cylindrical structure or a prismatic structure.
9. The battery liquid filling device according to claim 5 or 6, characterized in that the liquid filling insert (2) is made of a rigid corrosion-resistant material, and the outer diameter of the second installation part (23) is 0.2-0.5mm smaller than the diameter of the liquid filling hole.
10. The battery liquid filling device according to claim 5 or 6, characterized in that the liquid filling insert (2) is made of elastic corrosion-resistant material, and the outer diameter of the second installation part (23) is equal to the diameter of the liquid filling hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220368295.8U CN216928891U (en) | 2022-02-23 | 2022-02-23 | Battery liquid injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220368295.8U CN216928891U (en) | 2022-02-23 | 2022-02-23 | Battery liquid injection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216928891U true CN216928891U (en) | 2022-07-08 |
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ID=82267940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220368295.8U Active CN216928891U (en) | 2022-02-23 | 2022-02-23 | Battery liquid injection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216928891U (en) |
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2022
- 2022-02-23 CN CN202220368295.8U patent/CN216928891U/en active Active
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