CN216436085U - Electrolyte filling structure of lithium battery - Google Patents
Electrolyte filling structure of lithium battery Download PDFInfo
- Publication number
- CN216436085U CN216436085U CN202122209897.7U CN202122209897U CN216436085U CN 216436085 U CN216436085 U CN 216436085U CN 202122209897 U CN202122209897 U CN 202122209897U CN 216436085 U CN216436085 U CN 216436085U
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- CN
- China
- Prior art keywords
- electrolyte
- liquid
- battery
- battery core
- shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000003792 electrolyte Substances 0.000 title claims abstract description 69
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 35
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 239000007788 liquid Substances 0.000 claims abstract description 51
- 150000002641 lithium Chemical class 0.000 claims abstract description 7
- 238000002347 injection Methods 0.000 claims abstract description 6
- 239000007924 injection Substances 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 239000012466 permeate Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 11
- 239000012528 membrane Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 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
- 239000001989 lithium alloy Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000011255 nonaqueous electrolyte Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Filling, Topping-Up Batteries (AREA)
Abstract
The utility model provides an electrolyte filling structure of a lithium battery, which relates to the technical field of lithium batteries and comprises a shell, wherein a battery core is arranged in the shell, and an inner cavity for loading electrolyte is formed between the shell and the battery core, and the electrolyte filling structure of the lithium battery is characterized in that: a battery core cover is arranged at an opening at one end of the shell, a liquid injection port capable of injecting electrolyte into the inner cavity is arranged on the battery core cover, an electrolyte filling plate is arranged inside the shell and arranged between the battery core and the battery core cover, and a liquid storage tank for loading the battery liquid is arranged on one side, close to the battery core cover, of the electrolyte filling plate; the cross-sectional area of inlet is greater than the cross-sectional area of liquid outlet, and the inside electrolyte of reservoir slowly flows into to the inside of inner chamber, accomplishes the filling electrolyte process after, in the transportation process lithium cell, the back is emptyd to the lithium cell for the inside electrolyte of inner chamber is difficult to flow out.
Description
Technical Field
The utility model relates to the technical field of lithium batteries, in particular to an electrolyte filling structure of a lithium battery.
Background
The lithium battery is a primary battery which takes lithium metal or lithium alloy as a negative electrode material and uses a non-aqueous electrolyte solution, is different from a rechargeable battery, namely a lithium ion battery and a lithium ion polymer battery, the inventor of the lithium battery is edison, and the lithium metal has very high requirements on environment because the chemical characteristics of the lithium metal are very active, so that the lithium battery is not applied for a long time, and with the development of microelectronic technology at the end of the twentieth century, miniaturized equipment is increasingly increased, and very high requirements on a power supply are provided, and the lithium battery enters a large-scale practical stage.
The utility model discloses a pole core structure of a lithium battery in Chinese patent with the publication number of CN207587890U, which comprises a shell, a pole core body, an injection filling structure, a positive pole column, a positive pole lug, a negative pole column, a negative pole lug, an electricity isolating sheet and a heat dissipation opening, wherein the shell is internally provided with the pole core body, the pole core body comprises a positive plate, a negative plate and a diaphragm, the negative plate is arranged on one side of the positive plate, and the diaphragm is arranged between the positive plate and the negative plate. The heat dissipation of the pole core structure is convenient, and the safe use of people is facilitated.
However, the above-mentioned technical solution still has the following defect, in the process of the production of the lithium battery in a flow line manner, the electrolyte is added into the liquid injection filling structure through the liquid injection port, and a plurality of lithium batteries filled with the electrolyte need to be transported to the next process.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an electrolyte filling structure of a lithium battery, and aims to solve the problem that in the prior art, when the lithium battery filled with electrolyte is conveyed to the next process, the lithium battery is easy to topple over, so that the electrolyte in the lithium battery is easy to flow out.
In order to achieve the purpose, the utility model adopts the following technical scheme: electrolyte filling structure of lithium cell, which comprises an outer shell, the inside of shell is provided with the battery core, form the inner chamber that is used for loading electrolyte between shell and the battery core, the one end opening part of shell is equipped with the battery core lid, the battery core is covered and is provided with the notes liquid mouth that can to the inside intracavity portion filling electrolyte, the inside of shell is provided with the electrolyte filler plate, the electrolyte filler plate sets up between battery core and battery core lid, the reservoir that is used for loading battery liquid is offered to one side that the electrolyte filler plate is close to the battery core lid, through the electrolyte of annotating liquid mouth filling enters into to the reservoir in, the inlet channel with the inner chamber intercommunication is seted up to the inner diapire of reservoir, inlet channel has inlet and liquid outlet, just the cross-sectional area of inlet is greater than the cross-sectional area of liquid outlet.
According to a further technical scheme, the battery core comprises a positive plate, a negative plate and a diaphragm arranged between the positive plate and the negative plate.
In order to effectively prevent the electrolyte from flowing out of the shell, the liquid inlet channel is in an inverted cone shape or an inverted trapezoid shape.
According to a further technical scheme, a groove is formed in the outer surface of the electrolyte filling plate, and a sealing ring is arranged in the groove.
In order to further prevent the electrolyte from flowing out of the shell, the liquid inlet channel is internally provided with an annular boss, the annular boss is provided with a one-way permeation layer, and the one-way permeation layer is used for enabling the electrolyte to be permeated from the liquid storage tank to the inner part of the inner cavity in a one-way mode.
In order to enable the unidirectional osmosis membrane to have the unidirectional osmosis function, the unidirectional osmosis membrane has a further technical scheme that the unidirectional osmosis membrane is provided with a plurality of inverted cone-shaped holes.
The utility model has the beneficial effects that:
through annotating the inside filling electrolyte of liquid mouth to the inner chamber, electrolyte enters into the inside storage of reservoir earlier, because the cross-sectional area of inlet is greater than the cross-sectional area of liquid outlet, the slow inflow of the inside electrolyte of reservoir to the inside of inner chamber, after accomplishing the electrolyte process of annotating, carries the lithium cell to next process further processing, and in the transportation process, the back is emptyd to the lithium cell for the inside electrolyte of inner chamber is difficult to flow out.
Drawings
FIG. 1 is a schematic perspective view of an embodiment of the present invention;
FIG. 2 is a schematic diagram of the internal structure of an embodiment of the present invention;
FIG. 3 is a schematic perspective view of an electrolyte-filled sheet according to an embodiment of the present invention;
FIG. 4 is another schematic perspective view of an electrolyte fill sheet according to an embodiment of the utility model;
FIG. 5 is a schematic cross-sectional view of an electrolyte fill sheet according to an embodiment of the utility model;
FIG. 6 is an enlarged schematic view of the structure at A in FIG. 5 according to an embodiment of the present invention;
fig. 7 is a schematic structural view of a battery cell according to an embodiment of the present invention.
In the figure: 1. a housing; 2. a battery cell; 21. a positive plate; 22. a negative plate; 23. a diaphragm; 3. an inner cavity; 4. a battery cell cover; 5. a liquid injection port; 6. an electrolyte filling plate; 7. a liquid storage tank; 8. a liquid inlet channel; 81. a liquid inlet; 82. a liquid outlet; 9. a seal ring; 10. an annular boss; 11. a unidirectional permeable layer.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1-7, the electrolyte filling structure of a lithium battery comprises a housing 1, a battery cell 2 is arranged inside the housing 1, an inner cavity 3 for loading electrolyte is formed between the housing 1 and the battery cell 2, a battery cell cover 4 is arranged at an opening at one end of the housing 1, an electrolyte filling port 5 for filling electrolyte into the inner cavity 3 is arranged on the battery cell cover 4, an electrolyte filling plate 6 is arranged inside the housing 1, the electrolyte filling plate 6 is arranged between the battery cell 2 and the battery cell cover 4, a liquid storage tank 7 for loading the battery liquid is arranged at one side of the electrolyte filling plate 6 close to the battery cell cover 4, electrolyte filled through the liquid filling port 5 enters the liquid storage tank 7, a liquid inlet channel 8 communicated with the inner cavity 3 is formed in the inner bottom wall of the liquid storage tank 7, the liquid inlet channel 8 is provided with a liquid inlet 81 and a liquid outlet 82, and the cross sectional area of the liquid inlet 81 is larger than that of the liquid outlet 82.
In this embodiment, annotate liquid mouth 5 through annotating the inside filling electrolyte of inner chamber 3, electrolyte enters into the inside storage of reservoir 7 earlier, because the cross-sectional area of inlet 81 is greater than the cross-sectional area of liquid outlet 82, the inside slow inflow of the inside electrolyte of reservoir 7 to the inside of inner chamber 3, after accomplishing the electrolyte process of annotating, carry the lithium cell to next process further processing, in the transportation process, the back is emptyd to the lithium cell, make the inside electrolyte of inner chamber 3 be difficult to flow out, it is required to explain, it has anodal utmost point ear and negative pole utmost point ear to run through on the battery core lid 4.
In another embodiment of the present invention, the battery cell 2 includes a positive electrode tab 21, a negative electrode tab 22, and a separator 23 disposed between the positive electrode tab 21 and the negative electrode tab 22.
Specifically, the liquid inlet channel 8 is in an inverted cone shape or an inverted trapezoid shape.
Specifically, the outer surface of the electrolyte filling plate 6 is provided with a groove, a sealing ring 9 is arranged in the groove, and the sealing performance of the joint of the electrolyte filling plate 6 and the shell 1 can be improved by arranging the sealing ring 9.
Specifically, the inside of liquid inlet channel 8 has cyclic annular boss 10, is provided with one-way permeable layer 11 on the cyclic annular boss 10, and one-way permeable layer 11 is used for making electrolyte from reservoir 7 to the inside one-way infiltration of inner chamber 3.
Concretely, one-way permeable formation 11 has the hole of a plurality of back tapers, because one-way permeable formation 11 has the hole of back taper for electrolyte enters into the inside of shell 1 easily, but shell 1 is difficult for flowing out to the inside electrolyte of shell 1, and one-way permeable formation 11 is the one-way permeable membrane that macromolecular material made.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. Electrolyte filling structure of lithium cell, including shell (1), the inside of shell (1) is provided with battery core (2), form inner chamber (3) that are used for loading electrolyte between shell (1) and battery core (2), its characterized in that: a battery core cover (4) is arranged at an opening at one end of the shell (1), a liquid injection port (5) capable of injecting electrolyte into the inner cavity (3) is arranged on the battery core cover (4), an electrolyte filling plate (6) is arranged in the shell (1), the electrolyte filling plate (6) is arranged between the battery core (2) and the battery core cover (4), a liquid storage tank (7) for loading battery liquid is arranged on one side of the electrolyte filling plate (6) close to the battery core cover (4), the electrolyte filled through the liquid filling port (5) enters a liquid storage tank (7), the inner bottom wall of the liquid storage tank (7) is provided with a liquid inlet channel (8) communicated with the inner cavity (3), the liquid inlet channel (8) is provided with a liquid inlet (81) and a liquid outlet (82), and the cross-sectional area of the liquid inlet (81) is larger than that of the liquid outlet (82).
2. The electrolyte filling structure of a lithium battery according to claim 1, wherein the battery cell (2) includes a positive electrode tab (21), a negative electrode tab (22), and a separator (23) disposed between the positive electrode tab (21) and the negative electrode tab (22).
3. The electrolyte filling structure for a lithium battery as claimed in claim 1, wherein the liquid inlet channel (8) has an inverted cone or an inverted trapezoid shape.
4. The electrolyte filling structure for lithium batteries according to claim 1, wherein the outer surface of the electrolyte filling plate (6) is provided with a groove, and a sealing ring (9) is arranged in the groove.
5. The electrolyte filling structure of a lithium battery as claimed in any one of claims 1 to 4, wherein the liquid inlet channel (8) has an annular boss (10) inside, and a one-way permeation layer (11) is arranged on the annular boss (10), and the one-way permeation layer (11) is used for enabling the electrolyte to permeate from the liquid storage tank (7) to the inside of the inner cavity (3) in a one-way manner.
6. The electrolyte filling structure for a lithium battery according to claim 5, wherein the unidirectional osmosis layer (11) has a plurality of holes of an inverted cone shape.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122209897.7U CN216436085U (en) | 2021-09-13 | 2021-09-13 | Electrolyte filling structure of lithium battery |
| ZA2021/08020A ZA202108020B (en) | 2021-09-13 | 2021-10-20 | Electrolyte filling structure for lithium batteries |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122209897.7U CN216436085U (en) | 2021-09-13 | 2021-09-13 | Electrolyte filling structure of lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216436085U true CN216436085U (en) | 2022-05-03 |
Family
ID=80633000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122209897.7U Expired - Fee Related CN216436085U (en) | 2021-09-13 | 2021-09-13 | Electrolyte filling structure of lithium battery |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN216436085U (en) |
| ZA (1) | ZA202108020B (en) |
-
2021
- 2021-09-13 CN CN202122209897.7U patent/CN216436085U/en not_active Expired - Fee Related
- 2021-10-20 ZA ZA2021/08020A patent/ZA202108020B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ZA202108020B (en) | 2022-01-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220503 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |