CN207082577U - A kind of lithium battery module - Google Patents
A kind of lithium battery module Download PDFInfo
- Publication number
- CN207082577U CN207082577U CN201720901337.9U CN201720901337U CN207082577U CN 207082577 U CN207082577 U CN 207082577U CN 201720901337 U CN201720901337 U CN 201720901337U CN 207082577 U CN207082577 U CN 207082577U
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- CN
- China
- Prior art keywords
- cover plate
- upper cover
- burst disk
- battery module
- lithium battery
- 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.)
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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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- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model provides a kind of lithium battery module, including battery core, shell and upper cover plate, and pressure relief device is provided with upper cover plate；Upper cover plate laser welding shell, pressure relief device are the burst disk positioned at upper cover plate middle, and burst disk is tightly connected by the relief hole of fluid sealant and upper cover plate；Electrode column is respectively equipped with the upper cover plate of burst disk both sides, insulating cement part is installed between electrode column and upper cover plate；Incised groove is offered at the position of center line of burst disk, the depth of groove is 0.010 0.015mm, and the width of groove is 0.005 0.008mm, and the material of burst disk is elastomeric material；Battery core includes the positive pole electrically connected with Positive Poles, the negative pole, electrolyte and the barrier film between positive pole and negative pole that are electrically connected with negative pole pole；The material of barrier film is ceramic material, and negative pole is CNT, and just extremely LiFePO4, electrolyte are gel-form solid polymer electrolyte or lithium hexafluoro phosphate.The beneficial effects of the utility model are：The design has the advantages of being easy to pressure release, burst disk is reusable.
Description
Technical field
Technical field of lithium ion is the utility model is related to, more particularly, to a kind of lithium battery module.
Background technology
In recent years, with battery industry and continue to develop, lithium ion battery has energy density high, environment-friendly because of it
The advantages that and be widely used in the fields such as electric automobile, energy storage device.However, the security of lithium battery is to influence its development
An important factor for, for example lithium ion battery overcharges, cross put, the abuse condition such as short circuit occurs for lithium battery, extruding when, can cause lithium
Cell/module inside aerogenesis, catch fire, or even blast.
The conventional method for solving these problems is one relief valve of increase on the top cover of lithium battery/module, works as lithium battery
There is the above situation, inside produces gas, and when internal gas pressure reaches the burst pressure of relief valve, the burst disk on top cover is broken
Split, so that inside lithium ion cell gas is discharged from relief valve, prevent lithium battery because flatulence causes to explode.But use
For this scheme there is also some problems, burst disk presently, there are vent pressure uniformity shakiness from manufacture craft, hold
Easily cause burst disk failure can not pressure release in time cause lithium battery/module to explode.
At present, the burst disk of the domestic battery cell/module generally produced, it is most using materials such as aluminium flake/steel discs,
Detonating fuse is provided with above aluminium flake/steel disc, then by laser welding by the welding of aluminium flake/steel disc on the cover board, when being produced in battery
Pressure crosses the burstings such as senior general's aluminium flake/steel disc during angry body, to reach the purpose of pressure-relief explosion-proof.But this burst disk makes again
Miscellaneous process, it is cumbersome for installation, so being difficult to promote the use of on a large scale；And because can not be resetted after its pressure release, easily fail,
Therefore traditional burst disk service life is excessively of short duration.
As can be seen here, a kind of lithium battery module how is worked out, it had both been easy to pressure release to ensure that battery module uses process
In security, the service life for enabling burst disk and battery module but also with reusable burst disk extends, and is mesh
Preceding those skilled in the art's urgent problem to be solved.
The content of the invention
In order to solve the above problems, the utility model provides a kind of lithium battery module.
A kind of lithium battery module of the utility model, including battery core, be used on the outside of the lithium battery module protecting it is described
The shell of battery core, the upper cover plate positioned at the lithium battery module upper end, pressure relief device is installed on the upper cover plate.The upper lid
Plate is connected as one by laser welding mode and the body seal.
The pressure relief device is the burst disk positioned at the upper cover plate middle position, and the upper cover plate centre position opens up
There is relief hole, be tightly connected arround the burst disk by the relief hole of fluid sealant and the upper cover plate.
Electrode column is respectively equipped with the upper cover plate at left and right sides of the burst disk, the electrode column includes positive pole pole
Post and negative pole pole, insulating cement part is separately installed between the Positive Poles and the negative pole pole and the upper cover plate.
Incised groove is offered at the position of center line of the burst disk, the depth of the groove is 0.010-
0.015mm, the width of the groove is 0.005-0.008mm, and the material of the burst disk is elastomeric material.
The battery core includes the positive pole electrically connected with the Positive Poles, the negative pole, the electricity that are electrically connected with the negative pole pole
Solve liquid and the barrier film between the positive pole and negative pole；The material of the barrier film is ceramic material, and the negative material is
CNT, the positive electrode are LiFePO4, and the electrolyte is gel-form solid polymer electrolyte or lithium hexafluoro phosphate.
Further, the ceramic material is the porous ceramics material formed by silica or carborundum through high-temperature calcination
Material, the thickness of the barrier film is 30-45 μm.
Further, the carbon nano-tube material is the CNT doped with nano titania particle.
Further, the material of the burst disk is beallon material.
Further, the burst disk is to the raised sphere in the battery core side.
Further, the thickness of the burst disk is 0.02-0.04mm.
Further, the upper cover plate upper surface is fixed with metal clips by spot welding mode, and the metal clips is located at
Arround the explosionproof hole of the burst disk.
Further, the quantity of the metal clips is at least three, and is in as axis using the center line of the explosionproof hole
Annular array is uniformly arranged.
Further, the metal clips is beryllium copper shell fragment.
Further, the fluid sealant is polyurethane sealant.
A kind of lithium battery module of the utility model, compared with prior art with advantages below：
First, the lithium battery module is opened by installing pressure relief device in its upper cover plate middle position in the upper cover plate
If relief hole and the burst disk that is tightly connected with upper cover plate, make inside battery module because overcharging or the reason such as short circuit causes pressure
During surge, the burst disk can be broken through in time, and by the explosionproof hole pressure release.Wherein, the burst disk and the upper lid
It is to be adhesively fixed by fluid sealant such as polyurethane sealant between plate, sealing property is more compared with laser spot welding for this method
It is good, while use cost is also more cheap.
Secondly, the burst disk is elastomeric material, and this is mainly designed to make burst disk energy after pressure release
It is enough to recover original state as far as possible, burst disk and battery module is continuing with.In order that the burst disk has well
Reset capability so be designed to beallon, in order that this burst disk can pressure release in time so its thickness is done thinned
Processing, and position sets groove so as to timely pressure release therebetween.In order to ensure it still as far as possible when ensureing reset after pressure release
With good sealing, so the shape of groove is designed as into zigzag.So it is to remain to occlusion after burst disk is broken through to restore.
Finally, in order to further make rupture pressure disc smoothly to be resetted after rupturing, so being designed to raised sphere directed downwardly
Structure, and it is provided for above rupture pressure disc the beryllium copper metallic spring for resetting rupture pressure disc.Although that is, rupture pressure disc from it is lower to
Upper craze and transfiguration, but after treating the release of battery module internal pressure, under beryllium copper metallic spring rebound effect, rupture
Rupture pressure disc can be rapidly returned back near original position, so as to ensure the sealing demand of battery cell, make its internal electrolyte will not
Its fast decoupled is set to go bad because of extraneous pouring in for vapor.It can be seen that the design be easy to processing and it is easy to use, and
Burst disk can reuse, so the design can not only reduce the use cost of battery module and its pressure relief device, additionally it is possible to
Significantly extend the service life of battery module and its pressure relief device.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is installation diagram of the present utility model；
Fig. 3 is the structural representation of upper cover plate in the utility model；
Fig. 4 is the upward view of upper cover plate in the utility model.
In figure：1st, battery core, 2, shell, 3, upper cover plate, 4, burst disk, 5, fluid sealant, 6, electrode column, 7, insulating cement part.
Embodiment
In order to be better understood from the utility model, enter traveling one to the utility model with reference to specific embodiments and the drawings
The description of step.
As Figure 1-4, a kind of lithium battery module, including battery core 1, be used on the outside of the lithium battery module to protect institute
The shell 2 of battery core 1 and the upper cover plate 3 positioned at the lithium battery module upper end are stated, pressure relief device is installed on the upper cover plate 3.
Wherein, the upper cover plate 3 is tightly connected with the shell 2 by laser welding mode and is integrated.
The pressure relief device is burst disk 4.It is respectively equipped with the upper cover plate 3 of the left and right sides of burst disk 4
Electrode column 6, the electrode column 6 include Positive Poles and negative pole pole, the Positive Poles and the negative pole pole with it is described on
Insulating cement part 7 is separately installed between cover plate 3.
The battery core 1 includes the positive pole electrically connected with the Positive Poles, the negative pole, the electricity that are electrically connected with the negative pole pole
Solve liquid and the barrier film between the positive pole and negative pole.In order to lift the performance of the battery core 1, thus will it is described every
The material design of film is ceramic material, and the negative material is designed as into CNT, and the positive electrode is designed as into phosphoric acid
Iron lithium, it is gel-form solid polymer electrolyte or lithium hexafluoro phosphate by the electrolyte design.
Wherein, in order that the barrier film has good heat-resisting ability, avoid temperature too high and fail, make battery cell
Short circuit is internally formed, so being ceramic diaphragm by the diaphragm design.So the ceramic diaphragm is by silica or carborundum
The porous ceramic film material formed through high-temperature calcination.In order to further ensure that the barrier film can in battery cell charge and discharge process
All the time its buffer action is given full play to, so being 30-45 μm by the thickness of the barrier film, the design can effectively extend described
The service life of barrier film, the service life of the battery cell can more be substantially improved.
In order that the negative pole of the battery cell can be preferably embedded in and embedding lithium ionic insertion/deinsertion, make the discharge and recharge of battery cell
What is carried out is more smooth, so negative material is designed as being prepared by carbon nano-tube material.In addition, in order to further be lifted
The electric property of the negative material, so the carbon nano-tube material is designed as receiving doped with the carbon of nano titania particle
Mitron.This material is emerging current material.
The pressure relief device is positioned at the burst disk 4 of the middle position of upper cover plate 3, the centre position of upper cover plate 3
Relief hole is offered, so as to the smooth release of pressure in battery module.In order to simplify the burst disk 4 and the upper cover plate 3 it
Between attended operation, so the relief hole that will pass through fluid sealant 5 and the upper cover plate 3 arround the burst disk 4 is tightly connected.
Above-mentioned design is operating procedure when simplifying production battery module and pressure relief device, improves sealing property,
Also reduce production cost simultaneously.In addition, in order to further lift the sealing property of the fluid sealant 5, so by the sealing
Glue 5 is designed as good seal and more durable polyurethane sealant.
Incised groove is offered at the position of center line of the burst disk 4, the depth of the groove is 0.010-
0.015mm, the width of the groove is 0.005-0.008mm.And the material of the burst disk 4 is elastomeric material, such as resilience
The splendid beallon material of performance.The thickness of the burst disk 4 is 0.02-0.04mm.The burst disk 4 is to the battery core
The raised sphere in 1 side.
Above-mentioned design is on the one hand to make the burst disk 4 have suitable bearing capacity, and inside battery module
Pressure is more than the release of pressure that ftractureed immediately after limit value, the phenomenon for avoiding battery module from exploding；On the other hand it is then in order that broken
The rupture pressure disc split can be recoiled near initial position, and realizes more good sealing effectiveness, to ensure the battery module
It can continue to use.
Finally, in order that the rupture pressure disc of rupture quickly and can be recoiled to smoothly near initial position, so described
The upper surface of upper cover plate 3 is fixed with metal clips by spot welding mode, and the metal clips is located at the explosionproof hole week of the burst disk 4
By.In order to improve the resilience reset effect of the beryllium copper metal clips auxiliary rupture rupture pressure disc, so by the metal elastic
The quantitative design of piece be at least three, and using the center line of the explosionproof hole be axis circular array be uniformly arranged in it is described prevent
The upper surface of upper cover plate 3 arround blast hole.For the purposes of making the metal clips that there is good elastomeric property, so by described in
Metal clips is designed as beryllium copper shell fragment.
Embodiment of the present utility model is described in detail above, but the content is only of the present utility model preferable
Embodiment, it is impossible to be considered as being used to limit practical range of the present utility model.All impartial changes made according to the scope of the utility model
Change and improvement etc., all should still be belonged within this patent covering scope.
Claims (10)
- A kind of 1. lithium battery module, wherein the lithium battery module includes battery core（1）, be used on the outside of the lithium battery module Protect the battery core（1）Shell（2）And the upper cover plate positioned at the lithium battery module upper end（3）, the upper cover plate（3）On Pressure relief device is installed, it is characterised in that：The upper cover plate（3）Pass through laser welding mode and the shell（2）Sealed connection is integrated, and the pressure relief device is position In the upper cover plate（3）The burst disk of middle position（4）, the upper cover plate（3）Centre position offers relief hole, described anti- Quick-fried（4）Arround pass through fluid sealant（5）With the upper cover plate（3）Relief hole be tightly connected；In the burst disk（4）Left and right two The upper cover plate of side（3）In be respectively equipped with electrode column（6）, the electrode column（6）It is described including Positive Poles and negative pole pole Positive Poles and the negative pole pole respectively with the upper cover plate（3）Between insulating cement part is installed（7）；The burst disk（4）Position of center line on offer incised groove, the depth of the groove is 0.010- 0.015mm, the width of the groove are 0.005-0.008mm, the burst disk（4）Material be elastomeric material；The battery core（1）Including the positive pole electrically connected with the Positive Poles, the negative pole electrically connected with the negative pole pole, electrolysis Liquid and the barrier film between the positive pole and negative pole；The material of the barrier film is ceramic material, and the negative material is carbon Nanotube, the positive electrode are LiFePO4, and the electrolyte is gel-form solid polymer electrolyte or lithium hexafluoro phosphate.
- A kind of 2. lithium battery module according to claim 1, it is characterised in that：The ceramic material be by silica or The porous ceramic film material that carborundum forms through high-temperature calcination, the thickness of the barrier film is 30-45 μm.
- A kind of 3. lithium battery module according to claim 1, it is characterised in that：The carbon nano-tube material is doped with receiving The CNT of rice titan oxide particles.
- A kind of 4. lithium battery module according to claim 1, it is characterised in that：The burst disk（4）Material be beryllium copper Alloy material.
- A kind of 5. lithium battery module according to claim 1, it is characterised in that：The burst disk（4）For to the battery core （1）The raised sphere in side.
- A kind of 6. lithium battery module according to claim 1, it is characterised in that：The burst disk（4）Thickness be 0.02- 0.04mm。
- A kind of 7. lithium battery module according to claim 1, it is characterised in that：The upper cover plate（3）Upper surface passes through a little Weldering mode is fixed with metal clips, and the metal clips is located at the burst disk（4）Explosionproof hole arround.
- A kind of 8. lithium battery module according to claim 7, it is characterised in that：The quantity of the metal clips is at least three It is individual, and uniformly arranged by axis circular array of the center line of the explosionproof hole.
- 9. according to a kind of lithium battery module described in claim 7, it is characterised in that：The metal clips is beryllium copper shell fragment.
- A kind of 10. lithium battery module according to any one in claim 1-9, it is characterised in that：The fluid sealant（5） For polyurethane sealant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720901337.9U CN207082577U (en) | 2017-07-24 | 2017-07-24 | A kind of lithium battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720901337.9U CN207082577U (en) | 2017-07-24 | 2017-07-24 | A kind of lithium battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207082577U true CN207082577U (en) | 2018-03-09 |
Family
ID=61423883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720901337.9U Expired - Fee Related CN207082577U (en) | 2017-07-24 | 2017-07-24 | A kind of lithium battery module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207082577U (en) |
-
2017
- 2017-07-24 CN CN201720901337.9U patent/CN207082577U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220413 Address after: Room 206, B Building, 228 South Road Software Park, Dongying District, Dongying City, Shandong Province Patentee after: Shandong Yicong new energy Co.,Ltd. Address before: No.7 Yicheng Road, Dongying District, Dongying City, Shandong Province 257000 Patentee before: SHANDONG GREEN NEW ENERGY CO.,LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180309 |