CN220692288U - Electrolyte injection device for lithium battery - Google Patents
Electrolyte injection device for lithium battery Download PDFInfo
- Publication number
- CN220692288U CN220692288U CN202322318201.3U CN202322318201U CN220692288U CN 220692288 U CN220692288 U CN 220692288U CN 202322318201 U CN202322318201 U CN 202322318201U CN 220692288 U CN220692288 U CN 220692288U
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- Prior art keywords
- liquid
- liquid injection
- electrolyte
- pipe section
- communicated
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- 238000002347 injection Methods 0.000 title claims abstract description 132
- 239000007924 injection Substances 0.000 title claims abstract description 132
- 239000003792 electrolyte Substances 0.000 title claims abstract description 80
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 25
- 239000007788 liquid Substances 0.000 claims abstract description 167
- 238000010438 heat treatment Methods 0.000 claims abstract description 36
- 238000005452 bending Methods 0.000 claims description 13
- 238000009413 insulation Methods 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 4
- 230000017525 heat dissipation Effects 0.000 claims description 4
- 230000037452 priming Effects 0.000 claims description 3
- 238000003491 array Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 8
- 238000010521 absorption reaction Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000002699 waste material Substances 0.000 abstract description 5
- 238000005507 spraying Methods 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 239000007921 spray Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Landscapes
- Filling, Topping-Up Batteries (AREA)
- Hybrid Cells (AREA)
Abstract
The utility model provides a lithium battery electrolyte injection device, which comprises an electrolyte injection pipeline, a confluence tank, a plurality of electrolyte injection tanks and a heating piece, wherein one end of the electrolyte injection pipeline is communicated with the electrolyte storage tank, and the other end of the electrolyte injection pipeline is communicated with the confluence tank; the liquid inlet ends of the liquid injection tanks are communicated with the confluence tank, and the liquid outlet ends of the liquid injection tanks are respectively communicated with the liquid injection ports of the battery cores; the heating element is arranged on the outer side of the liquid injection pipeline along the direction of the conveying path of the electrolyte in a surrounding way; the heating piece is used for heating electrolyte conveyed in the liquid injection pipeline, the electrolyte conveyed in the liquid injection pipeline can be heated through the heating piece, the absorption efficiency of the electrode plate to the electrolyte can be improved in the liquid injection process, the risks of liquid discharge and liquid spraying of the battery in the liquid injection process are reduced, the waste of the electrolyte in the production process is reduced, and the energy consumption is reduced.
Description
Technical Field
The utility model relates to the technical field of lithium ion batteries, in particular to a lithium battery electrolyte injection device.
Background
The liquid injection process of the lithium ion battery generally adopts manual liquid injection in a glove box or a drying box at first, and the liquid injection efficiency and the absorption efficiency are extremely slow, so that the liquid injection efficiency and the absorption efficiency become bottlenecks of the production efficiency of the battery. With the development of technology, a vacuum liquid filling machine of a lithium ion battery and a vacuum and positive pressure circulating liquid filling machine are developed later. The liquid injection mode can greatly improve the liquid injection efficiency and the productivity of small-capacity batteries such as mobile phone batteries, notebook batteries and the like.
The publication number is CN 208507813U discloses a lithium cell priming device, including annotating liquid mechanism, lithium cell priming device still including be used for the intercommunication air supply reaches annotate the supercharging device of liquid mechanism, supercharging device is including being used for with the booster pump of air supply intercommunication and setting up steady voltage jar between booster pump and the notes liquid mechanism, steady voltage jar is used for stabilizing the gaseous pressure and the buffer gas of booster pump output.
At present, in the liquid injection process of the existing lithium battery liquid injection device, the electrolyte injected by the liquid injection machine is difficult to be completely absorbed in a short time due to insufficient absorption and infiltration capacity of the electrode plate in the battery cell, so that the situation that the absorbed electrolyte easily overflows or sprays from the liquid injection port of the battery cell is not reached, the situation causes waste of the electrolyte, the production efficiency is influenced, and the product quality is reduced.
Disclosure of Invention
In view of the above, the utility model provides a lithium battery electrolyte injection device which can heat electrolyte in an electrolyte injection pipeline, improve the absorption efficiency of an electrode plate on the electrolyte, reduce the risks of liquid discharge and liquid injection of a battery in the process of injecting the electrolyte, reduce the waste of the electrolyte in the production process and reduce the productivity consumption.
The technical scheme of the utility model is realized as follows: the utility model provides a lithium battery electrolyte injection device, which comprises an electrolyte injection pipeline, a confluence tank, a plurality of electrolyte injection tanks and a heating element, wherein,
one end of the liquid injection pipeline is communicated with the electrolyte liquid storage tank, and the other end of the liquid injection pipeline is communicated with the confluence tank;
the liquid inlet ends of the liquid injection tanks are communicated with the confluence tank, and the liquid outlet ends of the liquid injection tanks are respectively communicated with the liquid injection ports of the battery cores;
the heating element is arranged on the outer side of the liquid injection pipeline in a surrounding manner along the direction of the conveying path of the electrolyte; the heating piece is used for heating electrolyte conveyed in the liquid injection pipeline.
On the basis of the technical proposal, preferably, the liquid injection pipeline comprises a liquid inlet pipe section, a bending pipe section and a liquid outlet pipe section, wherein,
one end of the liquid inlet pipe section is communicated with an electrolyte liquid storage tank, the other end of the liquid inlet pipe section is communicated with the bent pipe section, the other end of the bent pipe section is communicated with the liquid outlet pipe section, and the other end of the liquid outlet pipe section is communicated with the inside of the confluence tank; the heating element is arranged on the outer side of the bent pipe section in a surrounding mode.
On the basis of the technical proposal, preferably, the bending pipe section comprises a plurality of horizontal pipe sections and a plurality of vertical pipe sections, wherein,
the plurality of horizontal pipe sections are arranged in parallel at intervals, and one end of the two horizontal pipe sections at the farthest end is respectively communicated with the liquid inlet pipe section and the liquid outlet pipe section;
the vertical pipe sections are respectively arranged between the two adjacent horizontal pipe sections, and two ends of the vertical pipe sections are respectively communicated with one ends of the two adjacent horizontal pipe sections, which are close to each other.
On the basis of the technical proposal, the utility model preferably further comprises an outer box body and an inner box body, wherein,
the inside of the outer box body is hollow, and one side of the outer box body is provided with an opening;
the confluence tank is fixed in the outer box body;
the inner box body is fixed at one side of the confluence tank away from the liquid injection tank;
the liquid inlet pipe section penetrates through the inner box body in sequence and extends to the inside of the inner box body, and is communicated with one end of the bent pipe section, and one end of the liquid outlet pipe section, which is far away from the bent pipe section, penetrates through the inner box body and extends to the inside of the confluence tank; the inner box body is used for reducing heat dissipation.
On the basis of the technical scheme, the heat insulation box is preferable, and further comprises a heat insulation piece, wherein the heat insulation piece is coated on the inner wall of the inner box body and is used for achieving a heat insulation effect on the inner box body.
On the basis of the technical proposal, the utility model preferably further comprises a pressurizing pipeline and a liquid injection valve, wherein,
one end of the pressurizing pipeline is communicated with the air supply end of external pressurizing equipment, the other end of the pressurizing pipeline is communicated with the inside of the liquid injection tank, and the pressurizing pipeline is positioned at the liquid inlet end side of the liquid injection tank;
the liquid injection valve is arranged at the liquid outlet end of the liquid injection tank and is used for selectively enabling the liquid outlet end of the liquid injection tank to be communicated with or disconnected from the liquid injection port of the battery cell.
On the basis of the technical proposal, the clamping assembly preferably further comprises a top plate, a bottom plate, a plurality of support columns and a plurality of tightening sleeves, wherein,
the top plate and the bottom plate are arranged at opposite intervals;
the support columns are fixed between the top plate and the bottom plate, and are respectively arranged at four corners of the top plate and the bottom plate;
the positions of the top plate and the bottom plate corresponding to each other are provided with a placing groove;
the plurality of tightening sleeves are respectively arranged in the placing grooves, the tightening sleeves have deformation tightening performance, the liquid injection pot is inserted into the corresponding two tightening sleeves and is abutted against the inner wall of the tightening sleeves, and the position of the liquid injection pot is limited by deformation tightening.
On the basis of the technical scheme, preferably, the liquid injection tanks are distributed in rectangular equidistant arrays.
On the basis of the technical scheme, preferably, the tightening sleeve is a rubber sleeve.
On the basis of the technical scheme, preferably, the heating element is a spiral heating resistance wire.
Compared with the prior art, the lithium battery electrolyte injection device has the following beneficial effects:
(1) The electrolyte conveyed in the electrolyte injection pipeline can be heated through the heating piece, the absorption efficiency of the electrode plate to the electrolyte can be improved in the electrolyte injection process, the risks of liquid discharge and liquid spraying of the battery in the electrolyte injection process are reduced, the waste of the electrolyte in the production process is reduced, and the productivity consumption is reduced;
(2) The arranged bending pipe section is formed by sequentially connecting a plurality of horizontal pipe sections and a plurality of vertical pipe sections, so that the heating area of the electrolyte can be increased;
(3) The inner box body and the heat insulation piece can play a role in heat preservation on the heat generated when the electrolyte is heated, and heat energy loss is reduced.
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 perspective view of an electrolyte injection device for a lithium battery according to the present utility model;
fig. 2 is a front view of the lithium battery electrolyte injection device of the present utility model;
FIG. 3 is a side view of the lithium battery electrolyte injection device of the present utility model;
fig. 4 is a sectional view of the lithium battery electrolyte injection device of the present utility model at A-A in fig. 3.
Detailed Description
The following description of the embodiments of the present utility model will clearly and fully describe the technical aspects of the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, are intended to fall within the scope of the present utility model.
As shown in fig. 1 to 4, the electrolyte injection device for the lithium battery comprises an electrolyte injection pipeline 1, a confluence tank 2, a plurality of electrolyte injection tanks 3 and a heating element 4.
One end of the liquid injection pipeline 1 is communicated with the electrolyte liquid storage tank, and the other end of the liquid injection pipeline is communicated with the confluence tank 2; the liquid inlet ends of the liquid injection tanks 3 are communicated with the confluence tank 2, and the liquid outlet ends of the liquid injection tanks 3 are respectively communicated with the liquid injection ports of the battery cores; the heating element 4 is arranged on the outer side of the liquid injection pipeline 1 along the direction of the conveying path of the electrolyte; the heating element 4 is used for heating the electrolyte conveyed in the liquid injection pipeline 1.
It should be noted that, in this embodiment, the electrolyte in the external electrolyte liquid storage tank flows into the confluence tank 2 through the liquid injection pipeline 1, then the electrolyte is injected into the battery through the internal pressurization of the liquid injection tank 3, the heating element 4 surrounding the outside of the liquid injection pipeline 1 is electrified, so that the electrolyte flowing in the liquid injection pipeline 1 can be directly heated, the absorption efficiency of the electrolyte by the electrode plate is improved, the risk of liquid discharge and liquid spray of the battery in the liquid injection process is reduced, the waste of the electrolyte in the production process is reduced, and the productivity consumption is reduced.
Specifically, the heating element 4 in this embodiment is a spiral heating resistance wire.
The liquid injection pipeline 1 in the embodiment comprises a liquid inlet pipe section 11, a bending pipe section 12 and a liquid outlet pipe section 13, wherein one end of the liquid inlet pipe section 11 is communicated with an electrolyte liquid storage tank, the other end of the liquid inlet pipe section is communicated with the bending pipe section 12, the other end of the bending pipe section 12 is communicated with the liquid outlet pipe section 13, and the other end of the liquid outlet pipe section 13 is communicated with the inside of the confluence tank 2; the heating element 4 is arranged around the outside of the bent tube section 12.
The bending tube section 12 provided in the liquid injection tube 1 can increase the flowing distance of the electrolyte in the liquid injection tube 1, and the heating element 4 is arranged around the outside of the bending tube section 12, so that the heating area of the electrolyte can be increased, and the heating effect of the electrolyte can be improved.
As a preferred embodiment, the bending tube section 12 in this embodiment includes a plurality of horizontal tube sections 121 and a plurality of vertical tube sections 122, where the plurality of horizontal tube sections 121 are arranged in parallel and at intervals, and one ends of two horizontal tube sections 121 at the farthest ends are respectively communicated with the liquid inlet tube section 11 and the liquid outlet tube section 13; the plurality of vertical pipe sections 122 are respectively arranged between the two adjacent horizontal pipe sections 121, and two ends of the vertical pipe sections 122 are respectively communicated with one ends of the two adjacent horizontal pipe sections 121, which are close to each other.
The embodiment also comprises an outer box body 5 and an inner box body 6, wherein the inner part of the outer box body 5 is hollow, and one side of the outer box body is provided with an opening; the confluence tank 2 is fixed in the outer box body 5; the inner box body 6 is fixed at one side of the confluence tank 2 far away from the liquid injection tank 3; the bending pipe section 12 is positioned in the inner box body 6, one end of the liquid inlet pipe section 11 sequentially penetrates through the outer box body 5 and extends into the inner box body 6, and is communicated with one end of the bending pipe section 12, and one end of the liquid outlet pipe section 13, which is far away from the bending pipe section 12, penetrates through the inner box body 6 and extends into the confluence tank 2; the inner housing 6 serves to reduce heat dissipation.
It should be noted that, in this embodiment, the inner case 6 and the confluence tank 2 are integrated into one outer case 5, so that the occupied area can be reduced, and meanwhile, the bent pipe section 12 of the liquid injection pipe 1 and the heating element 4 are located in the inner case 6, and the heating element 4 heats in the inner case 6, so that the heat dissipation can be reduced.
And, interior box 6 articulates towards the opening side of outer box 5 has the chamber door, opens the chamber door, conveniently maintains interior heating member 4.
The embodiment further comprises a heat insulating piece 7, wherein the heat insulating piece 7 is coated on the inner wall of the inner box body 6, and the heat insulating piece 7 is used for playing a heat insulating effect on the inner box body 6 and reducing heat loss.
The embodiment also comprises a pressurizing pipeline 8 and a liquid injection valve 9, wherein one end of the pressurizing pipeline 8 is communicated with the air supply end of external pressurizing equipment, the other end of the pressurizing pipeline is communicated with the inside of the liquid injection tank 3, and the pressurizing pipeline 8 is positioned at the liquid inlet end side of the liquid injection tank 3; the liquid injection valve 9 is arranged at the liquid outlet end of the liquid injection tank 3 and is used for selectively enabling the liquid outlet end of the liquid injection tank 3 to be communicated with or disconnected from the liquid injection port of the battery cell.
The heated electrolyte flows into the confluence tank 2, then is split into each of the liquid injection tanks 3, the gas is supplied to the liquid injection tanks 3 through the pressurizing pipeline 8 by the external pressurizing equipment, after a certain pressure is reached, the liquid injection valve 9 is opened, and then the electrolyte in the liquid injection tanks 3 is injected into the battery cell under the condition of pressurization.
The embodiment also comprises a clamping assembly 10, wherein the clamping assembly 10 comprises a top plate 101, a bottom plate 102, a plurality of support columns 103 and a plurality of tightening sleeves 104, and the top plate 101 and the bottom plate 102 are arranged at opposite intervals; a plurality of support columns 103 are fixed between the top plate 101 and the bottom plate 102, and the support columns 103 are respectively arranged at four corners of the top plate 101 and the bottom plate 102; the positions of the top plate 101 and the bottom plate 102 corresponding to each other are provided with a placing groove 100; the plurality of tightening sleeves 104 are respectively arranged in the placing grooves 100, the tightening sleeves 104 have deformation tightening performance, the liquid injection tank 3 is inserted into the corresponding two tightening sleeves 104 and is abutted against the inner wall of the tightening sleeves 104, and the position of the liquid injection tank 3 is limited through deformation tightening.
It should be noted that, the clamping assembly 10 can clamp and limit the positions of the liquid injection tanks 3, and distribute the liquid injection tanks 3 according to a rectangular equidistant array, so as to facilitate simultaneous liquid injection for multiple battery cores in the same batch.
Specifically, the shrink wrap 104 in this embodiment is preferably a rubber wrap.
Working principle:
the electrolyte in the external electrolyte liquid storage tank flows into the confluence tank 2 through the liquid injection pipeline 1, the heating element 4 arranged on the outer side of the liquid injection pipeline 1 is electrified in a surrounding mode, the electrolyte flowing in the liquid injection pipeline 1 is heated, the heated electrolyte flows into the confluence tank 2 and then is shunted into each liquid injection tank 3, the gas supply in the liquid injection tank 3 is pressurized through the pressurizing pipeline 8 by external pressurizing equipment, after a certain pressure is reached, the liquid injection valve 9 is opened, and then the electrolyte in the liquid injection tank 3 can be injected into the battery cell.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (10)
1. The utility model provides a lithium cell electrolyte priming device which characterized in that: comprises a liquid injection pipeline (1), a confluence tank (2), a plurality of liquid injection tanks (3) and a heating piece (4), wherein,
one end of the liquid injection pipeline (1) is communicated with an electrolyte liquid storage tank, and the other end of the liquid injection pipeline is communicated with the confluence tank (2);
the liquid inlet ends of the liquid injection tanks (3) are communicated with the confluence tank (2), and the liquid outlet ends of the liquid injection tanks (3) are respectively communicated with the liquid injection ports of the battery cores;
the heating piece (4) is circumferentially arranged on the outer side of the liquid injection pipeline (1) along the direction of the conveying path of the electrolyte; the heating element (4) is used for heating the electrolyte conveyed in the liquid injection pipeline (1).
2. The lithium battery electrolyte injection device as claimed in claim 1, wherein: the liquid injection pipeline (1) comprises a liquid inlet pipe section (11), a bending pipe section (12) and a liquid outlet pipe section (13), wherein,
one end of the liquid inlet pipe section (11) is communicated with an electrolyte liquid storage tank, the other end of the liquid inlet pipe section is communicated with the bent pipe section (12), the other end of the bent pipe section (12) is communicated with the liquid outlet pipe section (13), and the other end of the liquid outlet pipe section (13) is communicated with the inside of the confluence tank (2); the heating element (4) is arranged around the outer side of the bent pipe section (12).
3. The lithium battery electrolyte injection device as claimed in claim 2, wherein: the bent tube section (12) comprises a plurality of horizontal tube sections (121) and a plurality of vertical tube sections (122), wherein,
the horizontal pipe sections (121) are parallel and are arranged at intervals, and one end of the two horizontal pipe sections (121) at the farthest end is respectively communicated with the liquid inlet pipe section (11) and the liquid outlet pipe section (13);
the plurality of vertical pipe sections (122) are respectively arranged between two adjacent horizontal pipe sections (121), and two ends of each vertical pipe section (122) are respectively communicated with one end, close to each of the two adjacent horizontal pipe sections (121).
4. The lithium battery electrolyte injection device as claimed in claim 2, wherein: also comprises an outer box body (5) and an inner box body (6), wherein,
the inside of the outer box body (5) is hollow, and one side of the outer box body is provided with an opening;
the confluence tank (2) is fixed in the outer box body (5);
the inner box body (6) is fixed at one side of the confluence tank (2) far away from the liquid injection tank (3);
the bent pipe section (12) is positioned in the inner box body (6), one end of the liquid inlet pipe section (11) sequentially penetrates through the outer box body (5) and extends to the inside of the inner box body (6), the liquid inlet pipe section is communicated with one end of the bent pipe section (12), and one end of the liquid outlet pipe section (13) away from the bent pipe section (12) penetrates through the inner box body (6) and extends to the inside of the confluence tank (2); the inner box body (6) is used for reducing heat dissipation.
5. The lithium battery electrolyte injection device as claimed in claim 4, wherein: the heat insulation box further comprises a heat insulation piece (7), wherein the heat insulation piece (7) is coated on the inner wall of the inner box body (6), and the heat insulation piece (7) is used for achieving a heat insulation effect on the inner box body (6).
6. The lithium battery electrolyte injection device as claimed in claim 1, wherein: also comprises a pressurizing pipeline (8) and a liquid injection valve (9), wherein,
one end of the pressurizing pipeline (8) is communicated with the air supply end of external pressurizing equipment, the other end of the pressurizing pipeline is communicated with the inside of the liquid injection tank (3), and the pressurizing pipeline (8) is positioned at the liquid inlet end side of the liquid injection tank (3);
the liquid injection valve (9) is arranged at the liquid outlet end of the liquid injection tank (3) and is used for selectively enabling the liquid outlet end of the liquid injection tank (3) to be communicated with or disconnected from the liquid injection port of the battery cell.
7. The lithium battery electrolyte injection device as claimed in claim 1, wherein: the clamping assembly (10) is further included, the clamping assembly (10) comprises a top plate (101), a bottom plate (102), a plurality of support columns (103) and a plurality of tightening sleeves (104), wherein,
the top plate (101) and the bottom plate (102) are arranged at opposite intervals;
the support columns (103) are fixed between the top plate (101) and the bottom plate (102), and the support columns (103) are respectively arranged at four corners of the top plate (101) and the bottom plate (102);
the positions of the top plate (101) corresponding to the bottom plate (102) are provided with placing grooves (100);
the plurality of tightening sleeves (104) are respectively arranged in the placing grooves (100), the tightening sleeves (104) have deformation tightening performance, the liquid injection pot (3) is inserted into the corresponding two tightening sleeves (104) and is abutted against the inner wall of the tightening sleeves (104), and the position of the liquid injection pot (3) is limited by deformation tightening.
8. The lithium battery electrolyte injection device as claimed in claim 7, wherein: the liquid injection tanks (3) are distributed in rectangular equidistant arrays.
9. The lithium battery electrolyte injection device as claimed in claim 7, wherein: the shrink sleeve (104) is a rubber sleeve.
10. The lithium battery electrolyte injection device as claimed in claim 1, wherein: the heating element (4) is a spiral heating resistance wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322318201.3U CN220692288U (en) | 2023-08-27 | 2023-08-27 | Electrolyte injection device for lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322318201.3U CN220692288U (en) | 2023-08-27 | 2023-08-27 | Electrolyte injection device for lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220692288U true CN220692288U (en) | 2024-03-29 |
Family
ID=90411562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322318201.3U Active CN220692288U (en) | 2023-08-27 | 2023-08-27 | Electrolyte injection device for lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220692288U (en) |
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2023
- 2023-08-27 CN CN202322318201.3U patent/CN220692288U/en active Active
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