CN101325249A - Casing of lithium ion battery with composite structure - Google Patents
Casing of lithium ion battery with composite structure Download PDFInfo
- Publication number
- CN101325249A CN101325249A CNA2008101452369A CN200810145236A CN101325249A CN 101325249 A CN101325249 A CN 101325249A CN A2008101452369 A CNA2008101452369 A CN A2008101452369A CN 200810145236 A CN200810145236 A CN 200810145236A CN 101325249 A CN101325249 A CN 101325249A
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- Prior art keywords
- casing
- lithium ion
- ion battery
- composite structure
- polymer
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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
Abstract
The invention discloses a lithium ion battery casing with a composite structure, which comprises a plastic shell, wherein an electrode lead-out hole is formed on the plastic shell. The lithium ion battery casing is characterized in that the plastic shell is packed inside a metal casing, which mates with the surface thereof, and a through-hole corresponding to the electrode lead-out hole on the plastic shell is arranged on the metal casing. The metal casing arranged outside the plastic shell can improve the deformation-resistant strength of the plastic shell and improve the appearance of the battery casing. The metal casing is non-flammable, so as to effectively prevent a lithium ion battery being burnt and damaged due to external environment. The metal casing has good air tightness, so as to overcome the poor air tightness of the plastic shell, and improve the sealing performance of the battery casing. The aluminum alloy material has excellent thermal conductivity, which can improve the heat-radiating performance during the operation of the lithium ion battery, is helpful for the regular service of the lithium ion battery, and can prolong the service life of the lithium ion battery.
Description
Technical field
What the present invention relates to is battery case, especially a kind of casing of lithium ion battery with composite structure.
Background technology
Lithium ion battery is a kind of battery with high-rate discharge ability, is a kind of high energy density cells.It is compared with onesize nickel-cadmium cell, Ni-MH battery, and the electric weight deposit is maximum, the lightest, the longest-lived of weight.Therefore, lithium ion battery had become the battery of various power-equipment first-selections already.
Lithium ion battery is by the positive pole of a lithium-containing compound as active material, one telling and the lithium material of desorb lithium metal or the carbonizable substance negative pole as active material, and one deck can insulate and can give the separator of electron ion conducting and contain lithium hexafluoro phosphate (LiPF
6) or lithium perchlorate (LiCIO
4) nonaqueous electrolyte and shell form.Because electrolyte has very big corrosivity, therefore, lithium ion battery is to being immersed in the shell that positive and negative electrode in the electrolyte need be equipped with corrosion resistance and good.At present, lithium ion battery adopts the stronger polymer shell of corrosion resistance usually.Though the polymer casing of lithium ion battery can satisfy resistance to corrosion, there is following defective:
One, the intensity of polymer casing of lithium ion battery is lower, easy deformation;
Two, the fire resistance of polymer casing of lithium ion battery is poor, easily burning;
Three, the polymer casing of lithium ion battery to spread thermal effect poor;
Four, polymer casing of lithium ion battery life-span that can be recycled is short;
Five, the poor air-tightness of polymer casing of lithium ion battery.
Summary of the invention
Technical problem to be solved by this invention is to remedy the shortcoming that the above-mentioned background technology exists, and proposes a kind of high strength, high sealing, corrosion resistant casing of lithium ion battery with composite structure.
Technical problem of the present invention is solved by the following technical programs.
This casing of lithium ion battery with composite structure comprises: the polymer housing that is provided with the electrode fairlead.
The characteristics of this casing of lithium ion battery with composite structure are:
The polymer housing is wrapped in the metal shell that matches with its surface, and metal shell is provided with and the corresponding through hole of polymer housing top electrode fairlead.
Technical problem of the present invention is solved by following further technical scheme.
Described metal shell is an aluminum alloy casing.
Described metal shell surface longitudinal is provided with the concavo-convex groove face that can improve its radiating surface.
Described polymer housing outer wall vertically is provided with the reinforcement groove.
Described metal shell inwall is provided with the embedded groove that matches with polymer housing outer wall waling groove.
Design principle of the present invention is: giving full play on the strong basis of plastic material corrosion resistance, overcoming the existing defective of individual layer polymer casing of lithium ion battery by increasing metal shell.
The beneficial effect that the present invention is compared with prior art had:
One, is arranged on the outer metal shell of polymer housing and not only can improves its resistance to deformation intensity, and can improve the outward appearance of battery case.
Two, metal shell can not burn, and it can prevent effectively that lithium ion battery is because of the burned damage of external environment influence.
Three, metal shell has stronger air-tightness, and it can remedy the defective of polymer housing poor air-tightness, improves the sealing of casing of lithium ion battery.
Four, the splendid heat conductivity of utilizing aluminum alloy materials and being had can improve and spread hotly in the lithium ion battery work, has both helped the normal use of lithium ion battery, can prolong the useful life of lithium ion battery again.
Five, because this casing of lithium ion battery with composite structure is difficult for deformed damaged, can improve the life-span that recycles of lithium ion battery effectively.
Description of drawings
Fig. 1 is the structural representation of the specific embodiment of the invention.
Fig. 2 is the another kind of structural representation of the specific embodiment of the invention.
Embodiment
Below the contrast accompanying drawing and in conjunction with embodiment the present invention is further illustrated.
Embodiment 1: casing of lithium ion battery with composite structure as shown in Figure 1, its profile is identical with existing like product, is flat rectangular configuration.It is made up of polymer inner casing 1 and aluminum alloy casing 2.
Described polymer inner casing 1 is provided with the polymer housing 11 of opening 12 by an end and the polymer cap 13 of opening 12 sealings can be constituted, and described polymer housing 11 has smooth even curface.Described polymer cap 13 is provided with the electrode fairlead of installing for the battery positive and negative electrode 14.
Described aluminum alloy casing 2 is made of Al-alloy casing 21 that is provided with port 22 and the Aluminum Alloy Cover 23 that its port 22 can be sealed.Described Al-alloy casing 21 has smooth smooth inner wall and shell surface.Described Aluminum Alloy Cover 23 is provided with polymer cap 13 top electrodes draws 14 corresponding through holes 24.
The polymer housing 11 of described polymer inner casing 1 is embedded in the Al-alloy casing 21 of aluminum alloy casing 2 with proper fit system, forms the housing of plastic-aluminum combined structure.Polymer cap 13 and Aluminum Alloy Cover 23 are placed on the opening 12 of polymer housing 11 with polymer cap 13 after finishing the assembling of core of lithium ion cell in plastic-aluminum combined structure housing, utilize thermofussion welding that it is sealed.Then Aluminum Alloy Cover 23 is covered in the port 22 of Al-alloy casing 21, its sealing is got final product with metal welding.
Embodiment 2: casing of lithium ion battery with composite structure as shown in Figure 2, and its structure is substantially the same manner as Example 1, and difference only is: polymer inner casing 1 outer wall vertically is provided with reinforcement groove 15; Aluminum alloy casing 2 inwalls are provided with the embedded groove 25 that matches with polymer inner casing 1 outer wall waling groove 15, and aluminum alloy casing 2 surfaces are provided with the concavo-convex groove face 26 that can improve its radiating surface.Cooperate with aluminum alloy casing 2 inlaying of inwall embedded groove 25 by means of being separately positioned on polymer inner casing 1 outer wall reinforcement groove 15, can form the casing of lithium ion battery with composite structure that a kind of structure is better than embodiment 1.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, its framework form can be flexible and changeable, can the subseries product.Just make some simple deduction or replace, all should be considered as belonging to the scope of patent protection that the present invention is determined by claims of being submitted to.
Claims (7)
1, a kind of casing of lithium ion battery with composite structure comprises: be provided with the polymer housing of electrode fairlead, it is characterized in that:
The polymer housing is wrapped in the metal shell that matches with its surface, and metal shell is provided with and the corresponding through hole of polymer housing top electrode fairlead.
2, casing of lithium ion battery with composite structure according to claim 1 is characterized in that:
Described metal shell is an aluminum alloy casing.
3, casing of lithium ion battery with composite structure according to claim 1 and 2 is characterized in that:
Described metal shell surface longitudinal is provided with the concavo-convex groove face that can improve its radiating surface.
4, casing of lithium ion battery with composite structure according to claim 3 is characterized in that:
Described polymer housing outer wall vertically is provided with the reinforcement groove.
5, casing of lithium ion battery with composite structure according to claim 4 is characterized in that:
Described metal shell inwall is provided with the embedded groove that matches with polymer housing outer wall waling groove.
6, casing of lithium ion battery with composite structure according to claim 5 is characterized in that:
Described polymer inner casing (1) is provided with the polymer housing (11) of opening (12) by an end and the polymer cap (13) of opening (12) sealing can be constituted, and polymer cap (13) is provided with the electrode fairlead of installing for the battery positive and negative electrode (14).
7, casing of lithium ion battery with composite structure according to claim 6 is characterized in that:
Aluminum alloy casing (2) is by the Al-alloy casing that is provided with port (22) (21) and the Aluminum Alloy Cover (23) of its port (22) sealing can be constituted, and Aluminum Alloy Cover (23) is provided with polymer cap (13) top electrode draws (14) corresponding through hole (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101452369A CN101325249A (en) | 2008-07-25 | 2008-07-25 | Casing of lithium ion battery with composite structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101452369A CN101325249A (en) | 2008-07-25 | 2008-07-25 | Casing of lithium ion battery with composite structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101325249A true CN101325249A (en) | 2008-12-17 |
Family
ID=40188668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101452369A Pending CN101325249A (en) | 2008-07-25 | 2008-07-25 | Casing of lithium ion battery with composite structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN101325249A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010012135A1 (en) * | 2008-07-30 | 2010-02-04 | 雷天电池技术有限公司 | Out shell with composite structure for lithium ion battery |
| CN108281701A (en) * | 2018-02-01 | 2018-07-13 | 合肥国轩高科动力能源有限公司 | The soft-package battery module and power battery of samming |
| CN108336450A (en) * | 2018-02-01 | 2018-07-27 | 合肥国轩高科动力能源有限公司 | The uniform soft-package battery module of heat conduction and power battery |
| CN109346792A (en) * | 2018-02-01 | 2019-02-15 | 合肥国轩高科动力能源有限公司 | Radiate uniform soft-package battery mould group and power battery |
| CN109702069A (en) * | 2018-12-28 | 2019-05-03 | 上海超惠通风环保设备有限公司 | A kind of new energy battery composite material upper housing forming method |
| CN113670184A (en) * | 2020-05-13 | 2021-11-19 | 奥迪股份公司 | Measuring device and motor vehicle |
-
2008
- 2008-07-25 CN CNA2008101452369A patent/CN101325249A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010012135A1 (en) * | 2008-07-30 | 2010-02-04 | 雷天电池技术有限公司 | Out shell with composite structure for lithium ion battery |
| CN108281701A (en) * | 2018-02-01 | 2018-07-13 | 合肥国轩高科动力能源有限公司 | The soft-package battery module and power battery of samming |
| CN108336450A (en) * | 2018-02-01 | 2018-07-27 | 合肥国轩高科动力能源有限公司 | The uniform soft-package battery module of heat conduction and power battery |
| CN109346792A (en) * | 2018-02-01 | 2019-02-15 | 合肥国轩高科动力能源有限公司 | Radiate uniform soft-package battery mould group and power battery |
| CN109702069A (en) * | 2018-12-28 | 2019-05-03 | 上海超惠通风环保设备有限公司 | A kind of new energy battery composite material upper housing forming method |
| CN113670184A (en) * | 2020-05-13 | 2021-11-19 | 奥迪股份公司 | Measuring device and motor vehicle |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20081217 |