CN208848978U - A kind of high protection lithium battery diaphragm - Google Patents
A kind of high protection lithium battery diaphragm Download PDFInfo
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- CN208848978U CN208848978U CN201821815927.0U CN201821815927U CN208848978U CN 208848978 U CN208848978 U CN 208848978U CN 201821815927 U CN201821815927 U CN 201821815927U CN 208848978 U CN208848978 U CN 208848978U
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- lithium battery
- high protection
- diaphragm
- battery diaphragm
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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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Abstract
The utility model discloses a kind of high protection lithium battery diaphragms, the diaphragm cell of cubic housing shape including array setting, the diaphragm cell includes the barrier face for being used for the conducting face by lithium ion towards positive and negative anodes and obstructing lithium ion, and the vertex of the diaphragm cell is provided with perforative reinforcing strip.It can reduce battery failures rate, improve the security level and reliability of battery, long service life.
Description
Technical field
The utility model relates to lithium batteries, and in particular to a kind of high protection lithium battery diaphragm.
Background technique
The battery core of lithium ion battery is mainly made of positive electrode, negative electrode material, diaphragm and electrolyte.Its septation is electricity
The important component of core, it can separate battery plus-negative plate, and have electronic isolation and ionic conductivity.The performance of diaphragm
It determines the interfacial structure of battery, the retentivity of electrolyte and internal resistance of battery etc., and then influences the capacity of battery, cyclicity
The key characteristics such as energy, charging and discharging currents density.In addition, diaphragm also has large effect to the safety of battery.So diaphragm
The superiority and inferiority of performance directly affects the comprehensive performance of battery.General diaphragm only has one layer, lithium crystallization occurs in lithium battery
Shi Rongyi causes entire lithium battery to be scrapped by bursting, and its heat dissipation performance is bad, and lithium battery is easy fever damage.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of high protection lithium battery diaphragms, can reduce battery event
Barrier rate improves the security level and reliability of battery, long service life.
In order to solve the above-mentioned technical problem, the utility model provides a kind of high protection lithium battery diaphragm, including array is set
The diaphragm cell for the cubic housing shape set, the diaphragm cell include be used for towards positive and negative anodes through the conducting face of lithium ion and
The barrier face of lithium ion is obstructed, the vertex of the diaphragm cell is provided with perforative reinforcing strip.
Preferably, the conducting face includes the liquid-adsorption layer for increasing Electolyte-absorptive ability set gradually, uses
In temperature later block lithium ion pass through protective layer, for obstruct electronics and by the gel layer of lithium ion, be used to support knot
The supporting layer of structure and heat dissipating layer for distributing heat.
Preferably, the barrier face includes the liquid-adsorption layer for increasing Electolyte-absorptive ability set gradually, uses
In barrier electronics and by the gel layer of lithium ion, the supporting layer that is used to support structure, for obstructing lithium ion and electrolyte
Barrier layer and heat dissipating layer for distributing heat.
Preferably, the liquid-adsorption layer is fluorine ether coating.
Preferably, the gel layer is gelatin polymer fabric.
Preferably, the supporting layer is carbon fiber layer.
Preferably, the heat dissipating layer is inert metal layer.
Preferably, the protective layer is polyurethanes coating.
Preferably, the barrier layer is neoprene layer.
Preferably, the diaphragm cell has continuous three on the direction in conducting face.
Compared with prior art, the utility model has the beneficial effects that
1, the utility model forms lithium battery diaphragm by diaphragm cell that array is arranged, and diaphragm cell occurs at one
It is abnormal to be also limited in diaphragm cell at this or involve neighbouring diaphragm cell when problem, without will cause bigger damage,
Effectively improve the safety and service life of lithium battery.
2, the utility model can effectively improve the ion of lithium battery by the way that conducting face is arranged in lithium battery positive and negative anodes side
Conductivity reduces cell resistance, improves the performance of battery；It, can be preferable by the way that barrier face is arranged in other faces of diaphragm cell
Barrier electrolyte, increase the exception that can face of diaphragm cell.
3, perforative reinforcing strip is arranged by the vertex in diaphragm cell in the utility model, can guarantee entire lithium battery
The structural strength of diaphragm improves the spatial stability of diaphragm cell.
Detailed description of the invention
For the clearer technical solution illustrated in the utility model embodiment technology, embodiment technology will be retouched below
Attached drawing needed in stating is briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments, for those of ordinary skill in the art, without creative efforts, additionally it is possible to according to
These attached drawings obtain other attached drawings.
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of diaphragm cell；
Fig. 3 is the schematic elevation view of diaphragm cell；
Fig. 4 be A-A to schematic cross-sectional view；
Fig. 5 is the schematic cross-sectional view of B-B direction；
Fig. 6 is the structural schematic diagram in conducting face；
Fig. 7 is the structural schematic diagram in barrier face.
Wherein, 1- diaphragm, 10- diaphragm cell, 11- liquid-adsorption layer, 12- protective layer, 13- gel layer, 14- supporting layer, 15- resistance
Face is connected in interlayer, 16- heat dissipating layer, 20-, and 21- obstructs face, 22- reinforcing strip.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clear, complete description, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on this it is practical in embodiment, those of ordinary skill in the art are without creative labor
Every other embodiment obtained, fall within the protection scope of the utility model.
Embodiment
Shown in referring to Fig.1~Fig. 7, the utility model discloses a kind of high protection lithium battery diaphragms, including array setting
Diaphragm cell 10.Diaphragm cell 10 is cubic shell, with closed six faces.Wherein towards lithium battery anode or cathode
Two faces are conducting face 20, and not outer four faces are barrier face 21.Conducting face 20 can allow the lithium ion in electrolyte freely to lead to
It crosses；Barrier face 21 can obstruct electronics in electrolyte and ion passes through.
The vertex of above-mentioned diaphragm cell 10 is provided with perforative reinforcing strip 22.Reinforcing strip 22 can support diaphragm cell
10 inner space, and guarantee the stability in its space.After different diaphragm cells 10 stitches and fastens, same vertex has
More reinforcing strips 22, can further strengthen structural strength.Reinforcing strip 22 can be ceramic fibre, light-weight, high temperature resistant,
Thermal stability is good and mechanical resistant shakes.
Above-mentioned conducting face 20 includes liquid-adsorption layer 11, protective layer 12, gel layer 13, supporting layer 14 and the heat dissipating layer set gradually
16。
Above-mentioned liquid-adsorption layer 11 is fluorine ether coating.It can increase wellability, and electrolyte is made to be easier to be absorbed, and improve battery
Conductive capability.
Above-mentioned protective layer 12 is polyurethanes coating.When abnormal heating occurs in battery, if temperature reaches 80 DEG C, gather
Urethane coating can soften, so that the entire conducting face 20 of blocking, makes lithium battery stop working.
Above-mentioned gel layer 13 is gelatin polymer fabric.Its with certain geometric shape, elasticity and mechanical strength,
Its own can allow for lithium ion to pass through, and the hole of fabric also can allow for the lithium ion in electrolyte to pass through, while can
Barrier electronics passes through.
Above-mentioned supporting layer 14 is carbon fiber layer.It can preferably support entire conducting face 20, guarantee its electrolyte energy
Enough normal circulations.
Above-mentioned heat dissipating layer 16 is inert metal layer.It can heat in preferable Electolyte-absorptive, and distribute, protect
Demonstrate,prove the working condition of battery.
Above-mentioned barrier face 21 includes liquid-adsorption layer 11, gel layer 13, supporting layer 14, barrier layer 15 and the heat dissipating layer set gradually
16。
Above-mentioned barrier layer 15 is neoprene layer.It can obstruct electrolyte and lithium ion passes through, and be strapped in it individually
In diaphragm cell 10, guarantee the safety of other diaphragm cells 10.
Above-mentioned liquid-adsorption layer 11 is located at the most inner side of diaphragm cell 10.The heat dissipating layer 15 of two adjacent diaphragm cells 10 can
It is stitched to together.Reinforcing strip 20 in different diaphragm cells 10 is the whole band of same root, to guarantee its structural strength.
One preferred embodiment of the utility model is:
Above-mentioned diaphragm cell 10 has continuous three on the direction in conducting face 20.It blocks or stabs in lithium crystalline growth
When breaking the diaphragm cell 10, it can guarantee that battery continues to use.
Working principle:
In charge and discharge, lithium ion reaches the positive or negative pole of lithium battery by conducting face 20, completes charge and discharge；And it is electrolysed
Liquid can be blocked the barrier of face 21 in diaphragm cell 10 in other directions, keep electrolyte relatively fixed.The diaphragm cell at one
10 when something goes wrong, abnormal to be also limited in diaphragm cell 10 at this or involve neighbouring diaphragm cell 10, without will cause
Bigger damage effectively improves the safety and service life of lithium battery.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with novel point.
Claims (10)
1. a kind of high protection lithium battery diaphragm, which is characterized in that the diaphragm cell of the cubic housing shape including array setting, it is described
Diaphragm cell includes the barrier face for being used for the conducting face by lithium ion towards positive and negative anodes and obstructing lithium ion, the diaphragm list
The vertex of member is provided with perforative reinforcing strip.
2. high protection lithium battery diaphragm as described in claim 1, which is characterized in that the conducting face includes the use set gradually
In increase Electolyte-absorptive ability liquid-adsorption layer, for temperature later block lithium ion pass through protective layer, for obstructing electronics
And by the gel layer of lithium ion, be used to support the supporting layer of structure and the heat dissipating layer for distributing heat.
3. high protection lithium battery diaphragm as described in claim 1, which is characterized in that the barrier face includes the use set gradually
In increase Electolyte-absorptive ability liquid-adsorption layer, for obstruct electronics and by the gel layer of lithium ion, be used to support structure
Supporting layer, the barrier layer for obstructing lithium ion and electrolyte and the heat dissipating layer for distributing heat.
4. high protection lithium battery diaphragm as claimed in claim 2 or claim 3, which is characterized in that the liquid-adsorption layer is fluorine ether coating.
5. high protection lithium battery diaphragm as claimed in claim 2 or claim 3, which is characterized in that the gel layer is gelatin polymer
Fabric.
6. high protection lithium battery diaphragm as claimed in claim 2 or claim 3, which is characterized in that the supporting layer is carbon fiber layer.
7. high protection lithium battery diaphragm as claimed in claim 2 or claim 3, which is characterized in that the heat dissipating layer is inert metal layer.
8. high protection lithium battery diaphragm as claimed in claim 2, which is characterized in that the protective layer is polyurethanes painting
Layer.
9. high protection lithium battery diaphragm as claimed in claim 3, which is characterized in that the barrier layer is neoprene layer.
10. high protection lithium battery diaphragm as described in claim 1, which is characterized in that side of the diaphragm cell in conducting face
There are continuous three upwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821815927.0U CN208848978U (en) | 2018-11-06 | 2018-11-06 | A kind of high protection lithium battery diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821815927.0U CN208848978U (en) | 2018-11-06 | 2018-11-06 | A kind of high protection lithium battery diaphragm |
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| Publication Number | Publication Date |
|---|---|
| CN208848978U true CN208848978U (en) | 2019-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821815927.0U Active CN208848978U (en) | 2018-11-06 | 2018-11-06 | A kind of high protection lithium battery diaphragm |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110364685A (en) * | 2019-06-05 | 2019-10-22 | 江西力能新能源科技有限公司 | A kind of preparation method of the electrodes of lithium-ion batteries of the coating containing organic matter |
-
2018
- 2018-11-06 CN CN201821815927.0U patent/CN208848978U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110364685A (en) * | 2019-06-05 | 2019-10-22 | 江西力能新能源科技有限公司 | A kind of preparation method of the electrodes of lithium-ion batteries of the coating containing organic matter |
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