CN215680917U - Lithium ion battery liquid injection device - Google Patents
Lithium ion battery liquid injection device Download PDFInfo
- Publication number
- CN215680917U CN215680917U CN202121417371.1U CN202121417371U CN215680917U CN 215680917 U CN215680917 U CN 215680917U CN 202121417371 U CN202121417371 U CN 202121417371U CN 215680917 U CN215680917 U CN 215680917U
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- Prior art keywords
- liquid storage
- liquid
- cavity
- lithium ion
- ion battery
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- 239000007788 liquid Substances 0.000 title claims abstract description 182
- 238000002347 injection Methods 0.000 title claims abstract description 80
- 239000007924 injection Substances 0.000 title claims abstract description 80
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 28
- 238000003860 storage Methods 0.000 claims abstract description 93
- 239000003792 electrolyte Substances 0.000 claims abstract description 35
- 238000001179 sorption measurement Methods 0.000 claims abstract description 35
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 33
- 239000011550 stock solution Substances 0.000 claims abstract description 11
- 230000001105 regulatory effect Effects 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 4
- 230000003028 elevating effect Effects 0.000 claims description 2
- 230000037452 priming Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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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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- Filling, Topping-Up Batteries (AREA)
Abstract
The utility model discloses a lithium ion battery liquid injection device, which comprises a rack, a lifting mechanism, a liquid storage part, a liquid injection pipe and an elastic adsorption part, wherein: the rack is provided with a battery accommodating groove; the liquid storage part is arranged on the rack through a lifting mechanism, the lifting mechanism can be an electric cylinder, an air cylinder, a screw rod sliding block mechanism and the like in the prior art, and the liquid storage part is positioned above the battery accommodating groove; the liquid injection pipe is fixed at the bottom of the liquid storage piece and communicated with a liquid storage cavity of the liquid storage piece, and the liquid injection pipe is used for extending to a liquid injection hole of the lithium battery; the elasticity adsorbs the piece and installs on the stock solution piece and elasticity adsorbs the piece suit in the outside of annotating the liquid pipe, and the elasticity adsorbs the piece and is used for sealed lithium cell to annotate the liquid hole. The lithium ion battery liquid injection device provided by the utility model has a simple structure, is convenient for injecting liquid into a lithium battery, and avoids splashing of electrolyte.
Description
Technical Field
The utility model relates to the technical field of lithium battery production and manufacturing equipment, in particular to a lithium ion battery liquid injection device.
Background
In recent years, under the background of the green and environment-friendly era, new energy automobiles in China grow rapidly, and the power battery industry flourishes and develops under the pull of the rapidly expanded automobile market.
With the continuous promotion of power lithium ion battery production technology and the continuous acceleration of research and development of novel batteries, the key indexes of lithium ion battery such as energy density, safety, cost and the like are strictly controlled. The lithium ion battery mainly comprises a positive electrode, a negative electrode, a diaphragm, electrolyte and a shell. The lithium ion battery is divided into a soft package battery and a hard shell battery according to the package, and the hard shell lithium ion battery is widely applied due to the advantages of good sealing performance, simple finished product processing, mature technology, obvious cost advantage and the like. During the manufacture of the hard-shell battery, a battery inner core is placed into a shell, the shell is hermetically welded with a cover plate, and then liquid injection is carried out, wherein positive and negative terminals, an explosion-proof valve and a liquid injection hole are arranged on the cover plate. The liquid injection is completed by manual liquid injection or automatic liquid injection equipment, the manual liquid injection efficiency is low, the liquid injection phenomenon is possibly generated due to the internal and external pressure difference in the battery liquid injection process, and the personal safety of operators is threatened by electrolyte sputtering. Automatic liquid injection equipment on the market is large in size, expensive in equipment price, complex in operation, difficult to clean and clean, high in production cost and not beneficial to large-scale production.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems in the background technology, the utility model provides a liquid injection device of a lithium ion battery.
The utility model provides a lithium ion battery liquid injection device, which comprises a rack, a lifting mechanism, a liquid storage part, a liquid injection pipe and an elastic adsorption part, wherein:
the rack is provided with a battery accommodating groove;
the liquid storage part is arranged on the rack through a lifting mechanism, the lifting mechanism can be an electric cylinder, an air cylinder, a screw rod sliding block mechanism and the like in the prior art, and the liquid storage part is positioned above the battery accommodating groove;
the liquid injection pipe is fixed at the bottom of the liquid storage piece and communicated with a liquid storage cavity of the liquid storage piece, and the liquid injection pipe is used for extending to a liquid injection hole of the lithium battery;
the elasticity adsorbs the piece and installs on the stock solution piece and elasticity adsorbs the piece suit in the outside of annotating the liquid pipe, and the elasticity adsorbs the piece and is used for sealed lithium cell to annotate the liquid hole.
As a further optimized scheme of the utility model, the adsorption device further comprises a pressure regulating piece, and the pressure regulating piece is communicated with the adsorption cavity of the elastic adsorption piece.
The utility model further comprises a regulating valve which is arranged on the liquid injection pipe and is used for regulating the opening and closing of the liquid injection pipe.
As a further optimized scheme of the utility model, the liquid storage device further comprises a liquid storage part, and the liquid storage part is used for pressing the point electrolyte in the liquid storage part into the liquid injection pipe.
As a further optimized scheme of the utility model, the liquid storage part is a piston, the liquid storage part is provided with a liquid storage cavity and a pressure adjusting cavity, the liquid storage cavity is communicated with the pressure adjusting cavity, the piston is arranged in the pressure adjusting cavity in a sliding mode, and the pressure in the liquid storage cavity is changed by pulling the piston rod.
As a further optimized scheme of the utility model, the piston rod pressure adjusting cavity is divided into a first pressure cavity and a second pressure cavity, the first pressure cavity is communicated with the liquid storage cavity, and the second pressure cavity is communicated with the adsorption cavity of the elastic adsorption piece through a connecting pipeline.
As a further optimized scheme of the utility model, the capacity of the electrolyte in the liquid storage part is the capacity of the lithium ion battery point electrolyte.
As a further optimized scheme of the utility model, a feed inlet is arranged on the liquid storage part and is communicated with the liquid storage cavity.
As a further optimized scheme of the utility model, the depth of the battery accommodating groove is higher than half of the height of the lithium battery.
As a further optimized scheme of the utility model, a plurality of liquid storage parts, a plurality of liquid injection pipes and a plurality of elastic adsorption parts are arranged, one liquid injection pipe and one elastic adsorption part are arranged on one liquid storage part, any two adjacent liquid storage parts are connected through a fixing rod, and a lifting mechanism drives the liquid storage parts to move up and down by driving the fixing rod to move up and down.
According to the lithium ion battery liquid injection device, the lithium battery is placed in the battery accommodating groove, the liquid inlet of the lithium battery is opposite to the liquid injection pipe, the lifting mechanism drives the liquid storage part to move downwards, so that the liquid injection pipe extends into the liquid injection hole, the lower bottom surface of the elastic adsorption part is adsorbed to the upper surface of the lithium battery, the liquid injection hole is sealed, then liquid in the liquid storage part is discharged into the lithium battery, liquid injection is completed, the structure is simple, and the labor of operators is reduced.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a reservoir of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar designations denote like or similar elements or elements having like or similar functionality throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
It will be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for convenience and simplicity of description only and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the utility model.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
The lithium ion battery liquid injection device shown in fig. 1-2 comprises a frame 1, a lifting mechanism 2, a liquid storage part 3, a liquid injection pipe 4 and an elastic adsorption part 5, wherein:
the rack 1 is provided with a battery accommodating groove 10, and the depth of the battery accommodating groove 10 is greater than half of the height of the lithium battery, so that the lithium battery is prevented from shaking in the liquid injection process;
the liquid storage part 3 is mounted on the rack 1 through the lifting mechanism 2, the lifting mechanism 2 in this embodiment may be a screw rod slider mechanism in the prior art, and the liquid storage part 3 is located above the battery accommodating groove 10;
the outer diameter of the liquid injection pipe 4 is smaller than the aperture of the liquid injection hole, the liquid injection pipe 4 is fixed at the bottom of the liquid storage piece 3 and is communicated with the liquid storage cavity 30 of the liquid storage piece 3, and the liquid injection pipe 4 is used for extending to the liquid injection hole of the lithium battery;
the elastic adsorption piece 5 is a vacuum sucker with one closed end made of rubber, the closed end of the elastic adsorption piece 5 is arranged on the liquid storage piece 3, the elastic adsorption piece 5 is sleeved on the outer side of the liquid injection pipe 4, and the elastic adsorption piece 5 is used for sealing a liquid injection hole of the lithium battery;
a plurality of liquid storage parts 3, a plurality of liquid injection pipes 4 and a plurality of elastic adsorption parts 5 are arranged, one liquid injection pipe 4 and one elastic adsorption part 5 are arranged on one liquid storage part 3, any two adjacent liquid storage parts 3 are connected through a fixing rod 8, and the lifting mechanism 2 drives the liquid storage parts 3 to move up and down by driving the fixing rod 8 to move up and down;
the device also comprises an adjusting valve 6, wherein the adjusting valve 6 is arranged on the liquid injection pipe 4 and used for adjusting the opening and closing of the liquid injection pipe 4, and in order to prevent decomposition corrosion, the inner lining of the adjusting valve 6 is made of polytetrafluoroethylene;
the liquid storage part 3 is used for pressing the point decomposition liquid in the liquid storage part 3 into the liquid injection pipe 4, the liquid storage part 3 is a piston 7, the liquid storage part 3 is provided with a liquid storage cavity 30 and a pressure adjusting cavity 31, the pressure adjusting cavity 31 is positioned on one side of the liquid storage cavity 30, the liquid storage cavity 30 is communicated with the pressure adjusting cavity 31, the piston 7 is vertically arranged in the pressure adjusting cavity 31 in a sliding mode, the pressure in the liquid storage cavity 30 is changed by pulling a piston 7 rod, the piston 7 rod pressure adjusting cavity 31 is divided into a first pressure cavity 310 and a second pressure cavity 311, the first pressure cavity 310 is communicated with the liquid storage cavity 30, the second pressure cavity 311 is communicated with an adsorption cavity of the elastic adsorption part 5 through a connecting pipeline, and the piston 7 rod is also used as a pressure adjusting part of the elastic adsorption part 5;
the capacity of the electrolyte in the liquid storage part 3 is the capacity of the electrolyte for the lithium ion battery, a feed inlet 9 is arranged on the liquid storage part 3, and the feed inlet 9 is communicated with the liquid storage cavity 30.
In the working process of the embodiment:
the method comprises the following steps: placing a lithium battery in the battery accommodating groove 10, driving the liquid storage part 3 to move downwards by the lead screw slide block mechanism so that the liquid injection pipe 4 extends into a liquid injection hole of the lithium battery, adsorbing the upper surface of the lithium battery by a vacuum sucker, and sealing the liquid injection hole by the vacuum sucker, wherein the vacuum sucker is positioned around the liquid injection hole;
step two: then, the regulating valve 6 is closed, the piston 7 is pulled upwards, the liquid storage cavity 30 and the second pressure cavity 311 of the lithium battery are in negative pressure, the vacuum chuck is ensured to be adsorbed around the liquid injection hole, the liquid storage cavity 30 and the first pressure cavity 310 are in positive pressure, the regulating valve 6 is opened, and then the piston 7 is pulled upwards to enable the electrolyte in the liquid storage cavity 30 to be discharged into the lithium battery;
step three: after the pressure is balanced, repeating the second step for 2-3 times to ensure that the electrolyte in the liquid storage cavity 30 is completely injected into the lithium battery;
step four: closing the regulating valve 6, pulling the piston 7 upwards to ensure that the negative pressure is 30-60 seconds, eliminating tiny bubbles at the temporal part of the winding core, opening the regulating valve 6 and loosening the pressure balance vacuum chuck;
this embodiment simple structure is convenient for carry out electrolyte to the lithium cell and annotates the liquid, prevents to annotate liquid in-process electrolyte splash phenomenon such as excessive through elasticity adsorption element 5, and annotates the accurate control of being convenient for of liquid.
Preferred in this embodiment, still include pressure regulating part, pressure regulating part and elasticity adsorb the chamber intercommunication that adsorbs 5, are convenient for make the sealed liquid hole of annotating of adsorbing part, and accomplish to annotate the lithium cell and be convenient for get rid of the gas in the electrolyte to the lithium cell through the pressure that reduces elasticity and adsorb 5 after the liquid.
In the embodiment, it is preferable to further comprise a regulating valve 6, wherein the regulating valve 6 is installed on the liquid injection pipe 4 and is used for regulating the opening and closing of the liquid injection pipe 4, and the electrolyte bubbles in the lithium battery can be removed conveniently by opening and closing the regulating valve 6.
In this embodiment, it is preferable, still include stock solution spare 3, stock solution spare 3 is used for pressing the some electrolyte in stock solution spare 3 to annotating in the liquid pipe 4, is convenient for arrange the electrolyte in stock solution spare 3 to the lithium cell fast.
In this embodiment, it is preferable that the liquid storage member 3 is a piston 7, the liquid storage member 3 has a liquid storage cavity 30 and a pressure adjustment cavity 31, the liquid storage cavity 30 communicates with the pressure adjustment cavity 31, the piston 7 is slidably disposed in the pressure adjustment cavity 31, pressure in the liquid storage cavity 30 is changed by pulling a rod of the piston 7, as shown in fig. 2, the pressure adjustment cavity 31 in this embodiment is located on one side of the liquid storage cavity 30, the piston 7 is vertically slidably disposed in the pressure adjustment cavity 31, the piston 7 can be pulled and the rod of the piston 7 can be pulled upwards by an existing telescopic member such as an air cylinder, an electric cylinder, and the like.
In this embodiment, preferably, the outer diameter of the liquid injection pipe 4 is smaller than the aperture of the liquid injection hole, the rod pressure adjusting cavity 31 of the piston 7 is divided into a first pressure cavity 310 and a second pressure cavity 311, the first pressure cavity 310 is communicated with the liquid storage cavity 30, the second pressure cavity 311 is communicated with the adsorption cavity of the elastic adsorption piece 5 through a connecting pipeline, and then gas in the liquid storage cavity 30 of the original lithium battery is discharged into the second pressure cavity 311 in the liquid feeding process, after the liquid injection is completed, the pressure in the second pressure cavity 311 is reduced by moving the piston 7, and then bubbles of electrolyte in the liquid injection cavity of the lithium battery are removed.
In this embodiment, preferably, the capacity of the electrolyte in the liquid storage part 3 is the capacity of the lithium ion battery electrolyte, so as to ensure the liquid feeding precision.
In this embodiment, preferably, the liquid storage part 3 is provided with a feed port 9, and the feed port 9 is communicated with the liquid storage cavity 30, so that the electrolyte can be conveniently placed in the liquid supply cavity of the liquid storage part 3.
In this embodiment, it is preferable that the depth of the battery accommodating groove 10 is higher than half of the height of the lithium battery, so that the lithium battery is stably fixed on the frame 1.
Preferred in this embodiment, stock solution piece 3, annotate liquid pipe 4 and elasticity adsorption element 5 and be equipped with a plurality ofly, and annotate liquid pipe 4 and an elasticity adsorption element 5 and install on a stock solution piece 3, connect through dead lever 8 between two arbitrary adjacent stock solutions pieces 3, and elevating system 2 reciprocates through driving dead lever 8 and drives stock solution piece 3 and reciprocate, and then increases and annotate liquid work efficiency.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (10)
1. The utility model provides a lithium ion battery priming device, its characterized in that includes frame (1), elevating system (2), stock solution spare (3), annotates liquid pipe (4) and elasticity adsorption element (5), wherein:
the rack (1) is provided with a battery accommodating groove (10);
the liquid storage part (3) is arranged on the rack (1) through the lifting mechanism (2), and the liquid storage part (3) is positioned above the battery accommodating groove (10);
the liquid injection pipe (4) is fixed at the bottom of the liquid storage piece (3) and is communicated with a liquid storage cavity (30) of the liquid storage piece (3), and the liquid injection pipe (4) is used for extending to a liquid injection hole of the lithium battery;
the elastic adsorption piece (5) is arranged on the liquid storage piece (3), the elastic adsorption piece (5) is sleeved outside the liquid injection pipe (4), and the elastic adsorption piece (5) is used for sealing the liquid injection hole of the lithium battery.
2. The lithium ion battery electrolyte injection device according to claim 1, further comprising a pressure regulating member, wherein the pressure regulating member is communicated with the adsorption cavity of the elastic adsorption member (5).
3. The lithium ion battery electrolyte injection device according to claim 1, further comprising a regulating valve (6), wherein the regulating valve (6) is mounted on the electrolyte injection pipe (4) and is used for regulating the opening and closing of the electrolyte injection pipe (4).
4. The lithium ion battery electrolyte injection device according to claim 1, further comprising a liquid storage part (3), wherein the liquid storage part (3) is used for pressurizing the electrolyte in the liquid storage part (3) to the electrolyte injection pipe (4).
5. The lithium ion battery electrolyte injection device according to claim 4, wherein the liquid storage part (3) is a piston (7), the liquid storage part (3) is provided with a liquid storage cavity (30) and a pressure regulation cavity (31), the liquid storage cavity (30) is communicated with the pressure regulation cavity (31), the piston (7) is slidably arranged in the pressure regulation cavity (31), and the pressure in the liquid storage cavity (30) is changed by pulling a rod of the piston (7).
6. The electrolyte injection device for the lithium ion battery according to claim 5, wherein the rod pressure adjusting cavity (31) of the piston (7) is divided into a first pressure cavity (310) and a second pressure cavity (311), the first pressure cavity (310) is communicated with the liquid storage cavity (30), and the second pressure cavity (311) is communicated with the adsorption cavity of the elastic adsorption member (5) through a connecting pipeline.
7. The lithium ion battery electrolyte injection device according to any one of claims 1 to 6, wherein the capacity of the electrolyte in the liquid storage part (3) is the capacity of a lithium ion battery electrolyte.
8. The lithium ion battery electrolyte injection device according to claim 5, wherein a feed inlet (9) is formed in the liquid storage part (3), and the feed inlet (9) is communicated with the liquid storage cavity (30).
9. The lithium ion battery electrolyte injection device according to claim 1, wherein the depth of the battery accommodating groove (10) is higher than half of the height of the lithium battery.
10. The lithium ion battery electrolyte injection device according to claim 1, wherein a plurality of the liquid storage members (3), the plurality of the liquid injection pipes (4) and the plurality of the elastic adsorption members (5) are provided, one liquid injection pipe (4) and one elastic adsorption member (5) are installed on one liquid storage member (3), any two adjacent liquid storage members (3) are connected through a fixing rod (8), and the lifting mechanism (2) drives the liquid storage members (3) to move up and down by driving the fixing rod (8) to move up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121417371.1U CN215680917U (en) | 2021-06-24 | 2021-06-24 | Lithium ion battery liquid injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121417371.1U CN215680917U (en) | 2021-06-24 | 2021-06-24 | Lithium ion battery liquid injection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215680917U true CN215680917U (en) | 2022-01-28 |
Family
ID=79976901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121417371.1U Active CN215680917U (en) | 2021-06-24 | 2021-06-24 | Lithium ion battery liquid injection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215680917U (en) |
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2021
- 2021-06-24 CN CN202121417371.1U patent/CN215680917U/en active Active
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