CN107528090A - Serondary lithium battery structure - Google Patents
Serondary lithium battery structure Download PDFInfo
- Publication number
- CN107528090A CN107528090A CN201610447867.0A CN201610447867A CN107528090A CN 107528090 A CN107528090 A CN 107528090A CN 201610447867 A CN201610447867 A CN 201610447867A CN 107528090 A CN107528090 A CN 107528090A
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- CN
- China
- Prior art keywords
- negative
- positive
- cover
- handle
- 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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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- 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
-
- 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
Abstract
A kind of serondary lithium battery structure,It includes a core sub-prime,One metal-back has,One positive cover,One negative cover,One positive pole handle and a negative pole handle,Wherein accommodation space of the metal-back tool with a up/down perforation,The core sub-prime, which includes one, has the stacking shape body of a positive contact and a negative contacts,The stacking shape body inserts the accommodation space,And allow the positive contact with the negative contacts respectively positioned at the both ends of the accommodation space,And the both ends of the positive pole handle are respectively welded in the positive contact and the positive cover,The both ends of the negative pole handle are respectively welded in the negative contacts and the negative cover,And the positive cover seals the both ends of the accommodation space with the negative cover respectively,The present invention has assembling easy accordingly,Volume energy density is high,Without flatulence leakage,The advantages that high safety,Also it is synchronous to be adapted to wider height,Low temperature environment,And the advantages of maintaining low cost and high stability.
Description
Technical field
The present invention is about a kind of serondary lithium battery structure, espespecially a kind of encapsulating structure of serondary lithium battery.
Background technology
As science and technology is more and more flourishing, various accompanied electronic product, towards wireless penetration, direction hair can be carried
Exhibition, increasing portable electronic equipment turns into people's daily necessities, with the diminution of electronic component,
Compact design is particular about, small size battery is gradually largely used by people, and wherein secondary cell is because nothing
Memory, small volume can reuse, and compared with one-shot battery environmental protection, and attracted attention and use by each side.
Small-sized secondary batteries include NI-G, ni-mh and secondary columnar lithium battery etc., because environmental consciousness comes back
Under, the cadmium in nickel-cadmium cell, due to that with toxicity, if without reclaiming really after discarded, environment can be caused dirty
Dye, does not use gradually and is substituted, although and ni-mh compared with without the doubt in environmental protection, Ni-MH battery
Volume energy density is low, and the characteristic such as high temperature is poor, is gradually substituted by lithium ion battery.
And the structure of secondary cell at this stage, for matter, light, short, small etc. demand, mostly using aluminium foil
Shell of the press mold into bag as mechanism arrangement has, and aluminium foil has bent characteristic, therefore can reach outer appearance
Product optimization.However, the structural strength of aluminium foil bag is obviously not so good as metal can, easily there is the problem of leakage,
And aluminium foil press mold is limited to structural strength, energy density lifting, which has, under small size is necessarily stranded into the design of bag
Difficulty, and as shown in figure 1, the design of its conductive handle 1 must be protruded end to end, it understands space-consuming, and straight
The problem of connecing the design performance of influence capacitance, and tending to have leakage, not impact resistance, short life, low security.
General secondary cell internal structure consists predominantly of：Positive pole/negative pole/barrier film/electrolyte/conductive handle etc.
Deng in the model being employed extensively on the market, as shown in Fig. 2 it is the secondary cell 2 of cylindrical type 18650
Notebook computer and electric tool are successfully used for, a greater amount of development in recent years apply to the electricity as electric car
Pond, its production model can automate, thus with regard to cost and energy density from the point of view of, to belong to most economical material benefit
Lithium ion battery, and the secondary cell 2 of cylindrical type 18650 is designed as metal-back, therefore falls with resistance to,
The gas pressure of resistance to heavy-current discharge, belong to the design of toughening type, the missing that aluminium foil press mold designs into bag can be improved.
But the secondary cell 2 of cylindrical type 18650 still has the design of conductive button tail protrusion, can not make full use of space,
And leave some room for improvement.
The content of the invention
It is a primary object of the present invention to disclose a kind of serondary lithium battery structure, its conductive handle does not protrude, with
Space is made full use of, meets to use the needs of upper.
For the above-mentioned purpose, the present invention provides a kind of serondary lithium battery structure, its include a core sub-prime,
One metal-back tool, a positive cover, a negative cover, a positive pole handle and a negative pole handle, wherein the core sub-prime
Comprising a stacking shape body with a positive contact and a negative contacts, metal-back tool has about one to pass through
Logical accommodation space, the stacking shape body insert the accommodation space, and allow the positive contact and the negative contacts
It is located at the both ends of the accommodation space respectively, and the positive cover is corresponding with the negative cover covers the accommodation space, and
The both ends of the positive pole handle are respectively welded in the positive contact and the positive cover, and the both ends of the negative pole handle are then welded respectively
The negative contacts and the negative cover are connected to, and the positive cover seals the two of the accommodation space respectively with the negative cover
End.
Wherein, metal-back tool is selected from the group being made up of circular cylinder, elliptic cylindrical and polygon cylinder
Shape.
Wherein, the core sub-prime is the group that is formed selected from winding sub-prime and laminate patch sub-prime.
Wherein, the positive pole handle is the group formed selected from aluminium handle and stainless steel handle, and the negative pole handle is selected from copper handle, nickel
The group that handle, stainless steel handle are formed.
Wherein, the positive cover distinguishes the both ends of riveted metal-back tool with the negative cover and seals the accommodation space.
Wherein, the serondary lithium battery structure has more an insulating tape, and the insulating tape coats the positive pole handle and the positive pole
The weld of contact and the negative pole handle and the weld of the negative contacts.
Wherein, the core sub-prime includes storehouse and forms a positive electrode of laminated construction, one first isolation material, a negative pole
Material isolates material with one second, and the positive electrode is selected from lithium and cobalt oxides, lithium nickel oxide, lithium manganese sample compound, phosphorus
The group that sour iron lithium is formed, negative material are graphite system class.
Wherein, the both ends of the positive pole handle are utilized respectively the group formed selected from interior welding, resistance welding and laser welding,
It is welded in the positive contact and the positive cover.
Wherein, the both ends of the negative pole handle are utilized respectively the group formed selected from interior welding, resistance welding and laser welding,
It is welded in the negative contacts and the negative cover.
Wherein, the accommodation space more fills an electrolyte, the electrolyte be selected from ethylene carbonate, propene carbonate,
The group that diethyl carbonate, methyl ethyl carbonate, dimethyl carbonate and lithium hexafluoro phosphate are formed.
Accordingly, the present invention, which utilizes, allows the both ends of the positive pole handle to be respectively welded in the positive contact and the positive cover,
And allow the both ends of the negative pole handle to be respectively welded in the negative contacts and the negative cover, therefore the positive cover is negative with this
Polar cap can seal the both ends of the accommodation space respectively, and it is easy that it is assembled, and using metal-back tool, this just
Polar cap has the characteristic of high intensity with the negative cover, can bear high pressure and have volume energy density high, without swollen
The advantages that gas leakage, high safety, while also be adapted for wider high and low temperature environment, and maintain low cost and
The advantages of high stability, can meet to use the needs of upper.
Brief description of the drawings
Fig. 1 is secondary battery construction figure of the prior art aluminium foil press mold into bag.
Fig. 2 is the secondary battery construction figure of prior art cylindrical type 18650.
Fig. 3 is the end-view of metal-back of the present invention tool.
Fig. 4 is that the structure partial of a preferred embodiment of the present invention disassembles schematic diagram.
Fig. 5 is the surface structure schematic diagram of a preferred embodiment of the present invention.
Fig. 6 is the core element structure schematic diagram of the invention.
Embodiment
Detailed description for the present invention and technology contents, now just schema is coordinated to be described as follows：
Refer to shown in Fig. 3, Fig. 4 and Fig. 5, the present invention is a kind of serondary lithium battery structure, and it includes
One core sub-prime 10, a metal-back have 20, one positive cover 30, a negative cover 40, a positive pole handle 50 and
One negative pole handle 60, wherein the core sub-prime 10, which include one, has a positive contact 11 and a negative contacts 12
Stacking shape body 13, the core sub-prime 10 be selected from winding sub-prime or laminate patch sub-prime all can, such as winding
Sub-prime, as shown in fig. 6, the core sub-prime 10 can include the positive electrode that storehouse forms laminated construction
101st, one first isolation material 102, a negative material 103 isolate material 104 with one second, and it winds up i.e.
Winding sub-prime is formed, the wherein positive electrode 101 is selected from lithium and cobalt oxides, lithium nickel oxide, lithium manganese sample
The group that compound, LiFePO4 are formed, negative material 103 are graphite system class.
Metal-back tool 20 can be metal can, such as Fig. 3, and it can be terraced font, but not with this
It is limited, metal-back tool 20 has the accommodation space 21 of a up/down perforation, and the stacking shape body 13 inserts this
Accommodation space 21, and allow the positive contact 11 with the negative contacts 12 respectively positioned at the accommodation space 21
Both ends, and the positive cover 30 is corresponding with the negative cover 40 covers the accommodation space 21.
The both ends of the positive pole handle 50 are respectively welded in the positive contact 11 and the positive cover 30, on welding
Mode, the both ends of the positive pole handle 50 can be utilized respectively selected from interior welding, resistance welding and laser welding institute group
Into group, be welded in the positive contact 11 and the positive cover 30.And likewise, the negative pole handle 60
Both ends be then respectively welded and can divide in the negative contacts 12 and the negative cover 40, the both ends of the negative pole handle 60
Not using the group formed selected from interior welding, resistance welding and laser welding, the negative contacts 12 are welded in
With in the negative cover 40.
And the positive cover 30 seals the both ends of the accommodation space 21 with the negative cover 40 respectively, such as the positive cover
30 can distinguish the both ends of riveted metal-back tool 20 with the negative cover 40 and seal the accommodation space 21, and
The positive pole handle 50 can be the group that is formed selected from aluminium handle and stainless steel handle, and the negative pole handle 60 can be
The group formed selected from copper handle, nickel handle, stainless steel handle, more preferably, when the positive pole handle 50 and the negative pole handle
60 be all stainless steel handle, and the positive cover 30, the negative cover 40 and the metal-back 20 all use stainless steel
During matter, due to identical material, thus less easy fracture and welding bonding stability is high.
The present invention can more have an insulating tape 70 again, the insulating tape 70 for coat the positive pole handle 50 and
The weld of the positive contact 11 and the negative pole handle 60 and the weld of the negative contacts 12, to reach exhausted
The demand of edge.In addition, the accommodation space 21 can more fill an electrolyte 80, the electrolyte 80 is selected from ethylene
Alkene ester (EC), propene carbonate (PC), diethyl carbonate (DEC), methyl ethyl carbonate (EMC), dimethyl carbonate
(DMC) with lithium hexafluoro phosphate (1MLiPF6) group that is formed.
Structure as described above, its manufacturing step are as described below：
It is first winding or the core sub-prime 10 of laminate patch, now positive pole handle 50 and negative pole handle 60 are welded in the core
In the positive contact 11 and the negative contacts 12 of heart sub-prime 10；Then core sub-prime 10 is put into and do not advised
Metal-back tool 20 then；Followed by bond patterns such as interior welding, resistance welding or laser weldings, by positive pole
Handle 50 and negative pole handle 60 are respectively welded in the positive cover 30 and the negative cover 40；Then by core sub-prime
At 10 contact positive pole handles 50 and negative pole handle 60 insulation action is carried out using insulating tape 70；Then in metal
Core sub-prime 10 in shell tool 20 injects electrolyte 80；Then carrying out riveted makes the positive cover 30 negative with this
Polar cap 40 seals metal-back tool 20 respectively；Discharge and recharge action is finally carried out, completion prepares finished product.
The serondary lithium battery of the present invention, its discharge and recharge circulate by 500 circles, still possess more than 80% level,
And safety test can be overcharged by UL1642 and 3C/10V, there is high security and heat endurance, and it is internal
Have no other elements to arrange in pairs or groups, directly complete the positive pole handle 50, the negative pole handle 60 with being somebody's turn to do using the mode of welding
The electrical connection of positive cover 30, the negative cover 40.Overcoming simultaneously can not embody for Soft Roll macromolecule cylinder
Design of length produces less than 20mm, reaches the exploitation of high physical efficiency energy density.
In summary, the technology of the present invention can apply to the metal-back tool of a variety of irregular shapes, and using each
The positive pole handle, negative pole handle of kind of unlike material, and the positive cover, the negative cover and the metal-back have via
Riveted designs, and can overcome leakage, have high security, more high volume energy density, especially the positive pole handle,
When the negative pole handle, the positive cover, the negative cover and the metal-back all use stainless steel, it can more reach
The advantages that stability is high is binded in not easy to break, welding.It includes bluetooth/medical equipment/automobile remote-control with end
Device etc., while the present invention is used for the irregular tank body battery pack of any form, while reduce answering for processing procedure
Polygamy and cost, meet that battery product is light, thin, short, small and without aerogenesis, high security demand.
Meanwhile the present invention is directly to allow positive and negative electrode handle to be directly welded on metal-back tool, cost can be allowed to reduce,
Increase the anode volume of lithium battery interior simultaneously, capacitance can be increased, more existing lithium battery assembling processing procedure is simpler
Just.Known techniques are compared, the invention has the advantages that internal be free of element, space can be increased to lift capacitance,
Make simple, the life-span is horizontal up to 500 circle circulations 80%, compares high-polymer lithium battery, have without aerogenesis and
The advantages that cost is cheap.And the design of irregular metal shell tool, the change of external form can be increased, inside can more be held
Gas carrier pressure, therefore with more characteristics such as high securities.
Certainly, the present invention can also have other various embodiments, in the feelings without departing substantially from spirit of the invention and its essence
Under condition, those skilled in the art can make various corresponding changes and deformation, but this according to the present invention
A little corresponding changes and deformation should all belong to the protection domain of the claims in the present invention.
Claims (10)
- A kind of 1. serondary lithium battery structure, it is characterised in that including：One core sub-prime, the core sub-prime, which includes one, has the stacking shape body of a positive contact and a negative contacts；One metal-back has, and accommodation space of the metal-back tool with a up/down perforation, the stacking shape body inserts the appearance Between being empty, and allow the positive contact with the negative contacts respectively positioned at the both ends of the accommodation space；One positive cover, the positive cover correspondingly cover the accommodation space；One negative cover, the negative cover correspondingly cover the accommodation space；One positive pole handle, the both ends of the positive pole handle are respectively welded in the positive contact and the positive cover；AndOne negative pole handle, the both ends of the negative pole handle are respectively welded in the negative contacts and the negative cover, and the positive cover with The negative cover seals the both ends of the accommodation space respectively.
- 2. serondary lithium battery structure according to claim 1, it is characterised in that the metal-back tool be selected from The shape for the group being made up of circular cylinder, elliptic cylindrical and polygon cylinder.
- 3. serondary lithium battery structure according to claim 1, it is characterised in that the core sub-prime is selected from volume The group formed around sub-prime and laminate patch sub-prime.
- 4. serondary lithium battery structure according to claim 1, it is characterised in that the positive pole handle is selected from aluminium handle The group formed with stainless steel handle, the negative pole handle are the group that is formed selected from copper handle, nickel handle, stainless steel handle.
- 5. serondary lithium battery structure according to claim 1, it is characterised in that the positive cover and the negative cover Respectively the riveted metal-back tool both ends and seal the accommodation space.
- 6. serondary lithium battery structure according to claim 1, it is characterised in that with more an insulating tape, The insulating tape coats weld and the negative pole handle and the welding of the negative contacts of the positive pole handle and the positive contact Place.
- 7. serondary lithium battery structure according to claim 1, it is characterised in that the core sub-prime includes storehouse The positive electrode, one first isolation material, a negative material for forming laminated construction isolate material with one second, the positive pole Material is the group formed selected from lithium and cobalt oxides, lithium nickel oxide, lithium manganese sample compound, LiFePO4, negative pole Material is graphite system class.
- 8. serondary lithium battery structure according to claim 1, it is characterised in that the both ends difference of the positive pole handle Using the group formed selected from interior welding, resistance welding and laser welding, the positive contact and the positive pole are welded in Cover.
- 9. serondary lithium battery structure according to claim 1, it is characterised in that the both ends difference of the negative pole handle Using the group formed selected from interior welding, resistance welding and laser welding, the negative contacts and the negative pole are welded in Cover.
- 10. serondary lithium battery structure according to claim 1, it is characterised in that the accommodation space more fills one Electrolyte, the electrolyte are selected from ethylene carbonate, propene carbonate, diethyl carbonate, methyl ethyl carbonate, carbon The group that dimethyl phthalate is formed with lithium hexafluoro phosphate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610447867.0A CN107528090A (en) | 2016-06-20 | 2016-06-20 | Serondary lithium battery structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610447867.0A CN107528090A (en) | 2016-06-20 | 2016-06-20 | Serondary lithium battery structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107528090A true CN107528090A (en) | 2017-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610447867.0A Pending CN107528090A (en) | 2016-06-20 | 2016-06-20 | Serondary lithium battery structure |
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| CN (1) | CN107528090A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114122576A (en) * | 2020-08-31 | 2022-03-01 | 兴能高科技股份有限公司 | Cambered surface shell of button lithium secondary battery |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2138707B2 (en) * | 1971-08-03 | 1973-11-08 | Witte, Waldemar, 7157 Murrhardt | Plastic container for holding galvanic elements |
| US20030091901A1 (en) * | 1999-01-14 | 2003-05-15 | Junya Kaneda | Lithium secondary battery, and process for producing the same |
| CN102088113A (en) * | 2009-12-07 | 2011-06-08 | Sb锂摩托有限公司 | Rechargeable safe battery capable of improving anti-piercing and anti-crushing performance |
| CN102197514A (en) * | 2008-10-27 | 2011-09-21 | 日立车辆能源株式会社 | Secondary battery and manufacturing method therefor |
| CN103094511A (en) * | 2011-11-04 | 2013-05-08 | 三星Sdi株式会社 | Rechargeable battery and method for manufacturing the same |
-
2016
- 2016-06-20 CN CN201610447867.0A patent/CN107528090A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2138707B2 (en) * | 1971-08-03 | 1973-11-08 | Witte, Waldemar, 7157 Murrhardt | Plastic container for holding galvanic elements |
| US20030091901A1 (en) * | 1999-01-14 | 2003-05-15 | Junya Kaneda | Lithium secondary battery, and process for producing the same |
| CN102197514A (en) * | 2008-10-27 | 2011-09-21 | 日立车辆能源株式会社 | Secondary battery and manufacturing method therefor |
| CN102088113A (en) * | 2009-12-07 | 2011-06-08 | Sb锂摩托有限公司 | Rechargeable safe battery capable of improving anti-piercing and anti-crushing performance |
| CN103094511A (en) * | 2011-11-04 | 2013-05-08 | 三星Sdi株式会社 | Rechargeable battery and method for manufacturing the same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114122576A (en) * | 2020-08-31 | 2022-03-01 | 兴能高科技股份有限公司 | Cambered surface shell of button lithium secondary battery |
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Application publication date: 20171229 |