CN208753413U - A kind of battery core for lithium ion battery - Google Patents
A kind of battery core for lithium ion battery Download PDFInfo
- Publication number
- CN208753413U CN208753413U CN201821390414.XU CN201821390414U CN208753413U CN 208753413 U CN208753413 U CN 208753413U CN 201821390414 U CN201821390414 U CN 201821390414U CN 208753413 U CN208753413 U CN 208753413U
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- Prior art keywords
- microporous barrier
- battery
- lithium ion
- battery core
- positive plate
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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 battery cores for lithium ion battery, including positive plate, negative plate, lithium-ion electrolyte layer, battery core cylindrical shell, the positive plate includes sheet metal and the first microporous barrier for being compounded in sheet metal two sides, second microporous barrier, first microporous barrier, second microporous barrier is polyolefin matrix microporous barrier, the porosity of first microporous barrier is 48~51%, aperture is 0.15~0.4 μm, the porosity of second microporous barrier is 48~51%, aperture is 0.15~0.4 μm, the positive plate, lithium-ion electrolyte layer, negative plate is compound and curls into the column construction of curling, the column construction is installed in battery core cylindrical shell.Polyolefin-based microporous barrier of the negative electrode of lithium ion battery of the utility model in the setting insulation of positive plate two sides, under the premise of not influencing lithium ion battery and working normally it is possible to prevente effectively from because between battery cathode, anode, to solve the problems, such as that the contact of battery cathode, anode will cause short circuit.
Description
Technical field
The utility model relates to a kind of battery core structures, more particularly to a kind of battery core for lithium ion battery.
Background technique
The battery (rechargeable battery) that lithium ion battery secondary can be used as one kind, in fields such as mobile phone, removable electric appliances
It has a wide range of applications, for convenience of the portability of lithium ion battery, mostly by lithium ion battery volume compression, contracts to the greatest extent
Small lithium ion battery occupied space.But lithium-ion electric pool space is too small to cause distance between battery cathode, anode shorter, in lithium electricity
Pond easily leads to and contacts between cathode and anode, lead to short circuit by ambient pressure and when deforming, influence lithium battery using safe.
Utility model content
The utility model provides a kind of battery core for lithium ion battery, negative at least to solve battery in the prior art
Contact will cause the problem of short circuit between pole, anode.
The utility model provides a kind of battery core for lithium ion battery, including the electrolysis of positive plate, negative plate, lithium ion
Liquid layer, battery core cylindrical shell, the positive plate include sheet metal and the first microporous barrier, the second micropore for being compounded in sheet metal two sides
Film, first microporous barrier, the second microporous barrier are polyolefin matrix microporous barrier, and the porosity of first microporous barrier is 48~
51%, aperture is 0.15~0.4 μm, and the porosity of the second microporous barrier is 48~51%, and aperture is 0.15~0.4 μm, it is described just
Pole plate, lithium-ion electrolyte layer, negative plate are compound and curl into the column construction of curling, and the column construction is installed on battery core
In cylindrical shell.
Further, the sheet metal lower end of the positive plate is comb shaped structure.
Further, the lower end of the negative plate is comb shaped structure.
Further, the battery core cylindrical shell is aluminum enclosure, has fluorinated silicone modified acrylic acid coatings in the aluminum enclosure.
Further, the sheet metal of the positive plate is aluminium foil, and the negative plate is copper foil.
Further, the polyolefin matrix microporous barrier with a thickness of 2~8 μm.
Further, the negative plate include negative metal piece and be compounded in negative metal piece two sides third microporous barrier,
4th microporous barrier, the third microporous barrier, the 4th microporous barrier are polyolefin matrix microporous barrier, the hole of the third microporous barrier
Rate is 48~51%, and aperture is 0.15~0.4 μm, and the porosity of the 4th microporous barrier is 48~51%, and aperture is 0.15~0.4 μ
m。
The utility model compared with prior art, by be made of in the setting of positive plate two sides polyolefin-based microporous barrier the
One microporous barrier, the second microporous barrier, it is ensured that lithium ion effectively avoids the straight of positive electrode and negative electrode plate under the premise of can contacting with negative plate
Contact improves the use peace of lithium ion battery to solve the problems, such as that contact will cause short circuit between battery cathode, anode
Entirely, and lithium ion battery separator is eliminated, simplifies core strueture.
Detailed description of the invention
Fig. 1 is the utility model embodiment structural schematic diagram；
Fig. 2 is the utility model embodiment battery core schematic cross-section；
Fig. 3 is the sheet metal structure schematic diagram of the utility model embodiment positive plate.
Specific embodiment
In order to make those skilled in the art better understand the scheme of the utility model, below in conjunction with the utility model reality
The attached drawing in example is applied, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described
Embodiment is only the embodiment of the utility model a part, instead of all the embodiments.Based on the reality in the utility model
Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts is all answered
When the range for belonging to the utility model protection.
It should be noted that the specification and claims of the utility model and term " first " in above-mentioned attached drawing,
" second " etc. is to be used to distinguish similar objects, without being used to describe a particular order or precedence order.
The utility model embodiment discloses a kind of battery core for lithium ion battery, as shown in Figure 1, include positive plate,
Negative plate, lithium-ion electrolyte layer, battery core cylindrical shell, the positive plate include sheet metal and are compounded in the of sheet metal two sides
One microporous barrier 2, the second microporous barrier 3, first microporous barrier 2, the second microporous barrier 3 are polyolefin matrix microporous barrier, and described
The porosity of one microporous barrier 2 is 48~51%, and aperture is 0.15~0.4 μm, and the porosity of the second microporous barrier 3 is 48~51%,
Aperture is 0.15~0.4 μm, as shown in Fig. 2, the positive plate, lithium-ion electrolyte layer 4, negative plate 5 is compound and curls into
The column construction of curling, the column construction are installed in battery core cylindrical shell 6.
Optionally, the battery core cylindrical shell 6 is aluminum enclosure, has fluorinated silicone modified acrylic acid coatings in the aluminum enclosure.
Optionally, the sheet metal 1 of the positive plate is aluminium foil, and the negative plate is copper foil.
Optionally, the polyolefin matrix microporous barrier with a thickness of 2~8 μm.
Wherein, as shown in Figure 1, lithium-ion electrolyte layer 4 is set between positive plate, negative plate 5, positive plate, lithium ion
Electrolyte layer 4, negative plate 5 are curled into column construction in a manner of shown in Fig. 2, and are mounted in battery core cylindrical shell 6, form column
Battery core.
The utility model embodiment is by being arranged the first microporous barrier being made of polyolefin-based microporous barrier in positive plate two sides
2, the second microporous barrier 3, it is ensured that lithium ion effectively avoids directly connecing for positive electrode and negative electrode plate 5 under the premise of can contacting with negative plate 5
Touching, to solve the problems, such as that contact will cause short circuit between battery cathode, anode, improve lithium ion battery using safe, and
Lithium ion battery separator is eliminated, core strueture is simplified.
Optionally, the negative plate includes negative metal piece and is compounded in the third microporous barrier of negative metal piece two sides, the
Four microporous barriers, the third microporous barrier, the 4th microporous barrier are polyolefin matrix microporous barrier, the porosity of the third microporous barrier
It is 48~51%, aperture is 0.15~0.4 μm, and the porosity of the 4th microporous barrier is 48~51%, and aperture is 0.15~0.4 μm.
Wherein, anode plate refers to said positive-pole plate structure.
Optionally, as shown in figure 3, the sheet metal lower end of the positive plate is comb shaped structure.
Optionally, the lower end of the negative plate is comb shaped structure.
Wherein, the sheet metal of positive plate and the lower end structure of negative plate are identical, by taking positive plate sheet metal as an example, such as Fig. 3 institute
Show, the sheet metal of positive plate includes anode ear 11, the horizontal page 12 of anode, positive item 13.The upper end of anode ear 11 and the horizontal page 12 of anode
It is connected, multiple anode items 13 are connected with the lower end of the horizontal page 12 of anode.
Finally it should be noted that above embodiments are only to illustrate the technical solution of the utility model rather than limit it
System, although the utility model is described in detail referring to above-described embodiment, those of ordinary skill in the art should
Understand, technical staff read present specification after specific implementation of the utility model can still be modified or
Equivalent replacement, but these are modified or are changed within all without departing from present utility model application accompanying claims protection scope.
Claims (7)
1. a kind of battery core for lithium ion battery, which is characterized in that the battery core includes positive plate, negative plate, lithium-ion electric
Solve liquid layer, battery core cylindrical shell, the positive plate includes sheet metal and the first microporous barrier for being compounded in sheet metal two sides, second micro-
Pore membrane, first microporous barrier, the second microporous barrier are polyolefin matrix microporous barrier, and the porosity of first microporous barrier is 48
~51%, aperture is 0.15~0.4 μm, and the porosity of the second microporous barrier is 48~51%, and aperture is 0.15~0.4 μm, described
Positive plate, lithium-ion electrolyte layer, negative plate are compound and curl into the column construction of curling, and the column construction is installed on electricity
In core cylindrical shell.
2. the battery core according to claim 1 for lithium ion battery, which is characterized in that under the sheet metal of the positive plate
End is comb shaped structure.
3. the battery core according to claim 1 for lithium ion battery, which is characterized in that the lower end of the negative plate is comb
Shape structure.
4. the battery core according to claim 1 for lithium ion battery, which is characterized in that the battery core cylindrical shell is aluminium
Shell, the aluminum enclosure is interior to have fluorinated silicone modified acrylic acid coatings.
5. the battery core according to claim 1 for lithium ion battery, which is characterized in that the sheet metal of the positive plate is
Aluminium foil, the negative plate are copper foil.
6. the battery core according to claim 1 for lithium ion battery, which is characterized in that the polyolefin matrix microporous barrier
With a thickness of 2~8 μm.
7. the battery core according to claim 1 for lithium ion battery, which is characterized in that the negative plate includes cathode gold
Third microporous barrier, the 4th microporous barrier for belonging to piece and being compounded in negative metal piece two sides, the third microporous barrier, the 4th microporous barrier are equal
For polyolefin matrix microporous barrier, the porosity of the third microporous barrier is 48~51%, and aperture is 0.15~0.4 μm, and the 4th is micro-
The porosity of pore membrane is 48~51%, and aperture is 0.15~0.4 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821390414.XU CN208753413U (en) | 2018-08-27 | 2018-08-27 | A kind of battery core for lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821390414.XU CN208753413U (en) | 2018-08-27 | 2018-08-27 | A kind of battery core for lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208753413U true CN208753413U (en) | 2019-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821390414.XU Active CN208753413U (en) | 2018-08-27 | 2018-08-27 | A kind of battery core for lithium ion battery |
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| CN (1) | CN208753413U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113871558A (en) * | 2020-06-30 | 2021-12-31 | 松山湖材料实验室 | Closed metal negative electrode, winding type battery and preparation method |
-
2018
- 2018-08-27 CN CN201821390414.XU patent/CN208753413U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113871558A (en) * | 2020-06-30 | 2021-12-31 | 松山湖材料实验室 | Closed metal negative electrode, winding type battery and preparation method |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 330600 Jiangxi province Yichun City Jingan County Industrial Park A District Patentee after: Jiangxi Chaowei New Energy Technology Co., Ltd Address before: 330600 Jiangxi province Yichun City Jingan County Industrial Park A District Patentee before: JIANGXI CHAOWEI NEW ENERGY TECHNOLOGY Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A cell for lithium ion battery Effective date of registration: 20220225 Granted publication date: 20190416 Pledgee: Bank of China Limited Jing'an sub branch Pledgor: Jiangxi Chaowei New Energy Technology Co.,Ltd. Registration number: Y2022980001931 |