CN207883843U - A kind of structure meeting lithium-sulfur cell fluid injection consistency - Google Patents
A kind of structure meeting lithium-sulfur cell fluid injection consistency Download PDFInfo
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- CN207883843U CN207883843U CN201820274912.1U CN201820274912U CN207883843U CN 207883843 U CN207883843 U CN 207883843U CN 201820274912 U CN201820274912 U CN 201820274912U CN 207883843 U CN207883843 U CN 207883843U
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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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- 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 discloses a kind of structures meeting lithium-sulfur cell fluid injection consistency, the battery core of the lithium-sulfur cell is by positive plate, negative plate and the diaphragm composition for separating the positive plate and the negative plate, the top layer of the battery core and lowest level are respectively upper negative plate and lower negative plate, the thickness of the upper negative plate and the lower negative plate is first thickness, the thickness of standard negative plate among the battery core is second thickness, the first thickness is the half of the second thickness, there is one layer of diaphragm between each standard negative plate and the positive plate, there is one layer of diaphragm between the upper negative plate and the positive plate, also there is one layer of diaphragm between the lower negative plate and the positive plate.The utility model can solve the battery core positive plates of different capabilities, negative plate, diaphragm quantitative proportion have nothing in common with each other, the problem for causing the amount for the electrolyte that the battery core of different capabilities injects that must suitably be adjusted.
Description
Technical field
The utility model is related to battery manufacture field, more particularly to a kind of structure meeting lithium-sulfur cell fluid injection consistency.
Background technology
With the development of modern society, the application of lithium battery is more and more extensive.Wherein, since lithium-sulfur cell is with higher
Energy density is a kind of very promising lithium battery.The manufacture material of lithium-sulfur cell is probably divided into：Sulphur (positive electrode), lithium
(negative material), diaphragm, aluminum plastic film, electrolyte etc..In lithium-sulfur cell technology for manufacturing electric core, probably it is divided into following process：It is folded
Piece (positive electrode, diaphragm and negative material is stacked together), welding (welding collector), encapsulation (aluminum plastic film packaging electric core),
Fluid injection (injection electrolyte) etc..Wherein, during lamination, usually by among positive plate and negative plate across diaphragm in a manner of
Carry out lamination, else if positive plate and negative plate contact, then battery core can short circuit, so the number of positive plate, negative plate, diaphragm
Amount ratio is n：(n+1)：2(n+1).
As shown in Figure 1, the ratio between positive plate 1, diaphragm 2, prior art negative plate 3 is exactly 2：3：6.In general,
Under the premise of identical positive plate size, battery core capacity is not both the different capabilities since the quantity of positive plate is different
Battery core positive plate, negative plate, diaphragm quantitative proportion also have nothing in common with each other.In fluid injection process, since diaphragm itself is to electrolysis
The amount of the adsorptivity of liquid, the electrolyte theoretically injected is not only related with the quantity of positive plate, also related with the quantity of diaphragm, institute
The ratio of diaphragm and positive plate is also contemplated that with the amount of the electrolyte of injection.Under the premise of identical pole piece size, due to different appearances
The battery core positive plate of amount, negative plate, diaphragm quantitative proportion have nothing in common with each other, so the electrolyte of the battery core injection of different capabilities
Amount must be adjusted suitably, therefore the lithium-sulfur cell of the prior art has that fluid injection standard is inconsistent.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of structures meeting lithium-sulfur cell fluid injection consistency, with solution
Certainly the battery core positive plate of different capabilities, negative plate, diaphragm quantitative proportion have nothing in common with each other, cause the battery core of different capabilities to be injected
The problem that the amount of electrolyte must be adjusted suitably.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is：
A kind of structure meeting lithium-sulfur cell fluid injection consistency, the battery core of the lithium-sulfur cell by positive plate, negative plate with
And separating the diaphragm composition of the positive plate and the negative plate, the top layer of the battery core and lowest level are respectively upper negative plate
With lower negative plate, the thickness of the upper negative plate and the lower negative plate is first thickness, the mark being located among the battery core
The thickness of quasi- negative plate is second thickness, and the first thickness is the half of the second thickness, negative in each standard
There is one layer of diaphragm between pole piece and the positive plate, there is one layer of diaphragm between the upper negative plate and the positive plate,
Also there is one layer of diaphragm between the lower negative plate and the positive plate.
Preferably, the diaphragm after zigzag folds is formed for separating the positive plate and the negative plate
Laminated diaphragm, the upper negative plate are located at the top of top layer's diaphragm, and the lower negative plate is located at the lower section of lowest level diaphragm.
Preferably, the number of plies of the laminated diaphragm is even number.
Preferably, the quantity ratio of the positive plate, the standard negative plate and the diaphragm is 1:1:2, wherein combination
The upper negative plate and the lower negative plate afterwards is equivalent to a standard negative plate.
Compared with prior art, the beneficial effects of the utility model are：It can not be because of positive plate, negative plate, diaphragm
The ratio of quantity is different and needs to adjust the injection rate of electrolyte, has unified electrolyte injection rate, has preferably played battery core
Performance.And the utility model reduces the usage amount of diaphragm and negative plate, reduces battery core weight, improves battery core to a certain extent
Energy density.
Description of the drawings
Some specific realities of the utility model are described in detail by way of example rather than limitation with reference to the accompanying drawings hereinafter
Apply example.Identical reference numeral denotes same or similar component or part in attached drawing.It should be appreciated by those skilled in the art that
The drawings are not necessarily drawn to scale.In attached drawing：
Fig. 1 is the schematic diagram of the battery core internal structure of the lithium-sulfur cell of the prior art；
Fig. 2 is a kind of schematic diagram for the structure meeting lithium-sulfur cell fluid injection consistency of the utility model.
The meaning of each symbolic formulation is as follows in figure：
1- positive plates, 2- diaphragms, 3- prior art negative plates, 4- standard negative plates, the upper negative plates of 5-, negative plate under 6-.
Specific implementation mode
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings.It should be noted that
The explanation of these embodiments is used to help to understand the utility model, but does not constitute the restriction to the utility model.This
Outside, technical characteristic involved in the various embodiments of the present invention described below is as long as they do not conflict with each other
It can be combined with each other.
As shown in Fig. 2, the utility model meets the structure of lithium-sulfur cell fluid injection consistency, wherein the lithium-sulfur cell
Battery core is made of positive plate 1, negative plate and the diaphragm 2 of the separation positive plate 1 and the negative plate.Inside battery core, bear
Pole piece includes standard negative plate 4, upper negative plate 5 and lower negative plate 6.The top layer of the battery core and lowest level are respectively upper negative
Pole piece 5 and lower negative plate 6.And the negative plate of the centre of battery core is all standard negative plate 4.The upper negative plate 5 and described lower negative
The thickness of pole piece 6 is first thickness, and the thickness of the standard negative plate 4 among the battery core is second thickness.It is described
First thickness is the half of the second thickness.
In the present embodiment, the lamination process of diaphragm 2 is folded using zigzag, and the number of plies of the laminated diaphragm 2 is even
Number.The diaphragm 2 after zigzag folds forms the laminated diaphragm 2 for separating the positive plate 1 and the negative plate.
Wherein, there is one layer of diaphragm 2 between each standard negative plate 4 and the positive plate 1, in the upper negative plate 5 and institute
Stating has one layer of diaphragm 2 between positive plate 1, also has one layer of diaphragm 2 between the lower negative plate 6 and the positive plate 1.And
The upper negative plate 5 is located at the top of top layer's diaphragm 2, and the lower negative plate 6 is located at the lower section of lowest level diaphragm 2.
Therefore, after carrying out lamination to pole piece and diaphragm 2 using aforesaid way, the positive plate 1, the standard negative plate
4 and the diaphragm 2 quantity ratio be 1:1:2, in the calculating of this quantity, the upper negative plate 5 after combination and it is described under
Negative plate 6 is equivalent to a standard negative plate 4.Upper negative plate 5 and lower negative plate 6 are exposed outside battery core.Therefore, this practicality is new
Type can unify the injection rate of electrolyte, preferably play battery core performance.And the utility model reduces diaphragm 2 and cathode
The usage amount of piece reduces battery core weight, improves battery core energy density to a certain extent.
The embodiment of the utility model is explained in detail above in association with attached drawing, but the utility model is not limited to be retouched
The embodiment stated.For a person skilled in the art, right in the case where not departing from the utility model principle and spirit
These embodiments carry out a variety of change, modification, replacement and modification, still fall in the scope of protection of the utility model.
Claims (4)
1. a kind of structure meeting lithium-sulfur cell fluid injection consistency, which is characterized in that the battery core of the lithium-sulfur cell by positive plate,
Negative plate and the diaphragm composition for separating the positive plate and the negative plate, the top layer of the battery core and lowest level are respectively
The thickness of upper negative plate and lower negative plate, the upper negative plate and the lower negative plate is first thickness, is located at the battery core
The thickness of intermediate standard negative plate is second thickness, and the first thickness is the half of the second thickness, in each institute
Stating has one layer of diaphragm between standard negative plate and the positive plate, have one between the upper negative plate and the positive plate
Layer diaphragm, also has one layer of diaphragm between the lower negative plate and the positive plate.
2. a kind of structure meeting lithium-sulfur cell fluid injection consistency according to claim 1, which is characterized in that pass through Z-shaped
The diaphragm after shape folding forms the laminated diaphragm for separating the positive plate and the negative plate, the upper negative plate position
In the top of top layer's diaphragm, the lower negative plate is located at the lower section of lowest level diaphragm.
3. a kind of structure meeting lithium-sulfur cell fluid injection consistency according to claim 2, which is characterized in that the multilayer
The number of plies of diaphragm is even number.
4. a kind of structure meeting lithium-sulfur cell fluid injection consistency according to claim 3, which is characterized in that the anode
The quantity ratio of piece, the standard negative plate and the diaphragm is 1:1:2, wherein the upper negative plate after combination and described
Lower negative plate is equivalent to a standard negative plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820274912.1U CN207883843U (en) | 2018-02-27 | 2018-02-27 | A kind of structure meeting lithium-sulfur cell fluid injection consistency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820274912.1U CN207883843U (en) | 2018-02-27 | 2018-02-27 | A kind of structure meeting lithium-sulfur cell fluid injection consistency |
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| CN207883843U true CN207883843U (en) | 2018-09-18 |
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| CN201820274912.1U Active CN207883843U (en) | 2018-02-27 | 2018-02-27 | A kind of structure meeting lithium-sulfur cell fluid injection consistency |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112701245A (en) * | 2020-12-25 | 2021-04-23 | 惠州亿纬锂能股份有限公司 | Composite pole piece of semisolid lithium-sulfur battery, semisolid lithium-sulfur battery and preparation method of semisolid lithium-sulfur battery |
-
2018
- 2018-02-27 CN CN201820274912.1U patent/CN207883843U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112701245A (en) * | 2020-12-25 | 2021-04-23 | 惠州亿纬锂能股份有限公司 | Composite pole piece of semisolid lithium-sulfur battery, semisolid lithium-sulfur battery and preparation method of semisolid lithium-sulfur battery |
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