CN106356480A - Outer package of cylindrical lithium ion battery and preparation method of outer package - Google Patents
Outer package of cylindrical lithium ion battery and preparation method of outer package Download PDFInfo
- Publication number
- CN106356480A CN106356480A CN201510440332.6A CN201510440332A CN106356480A CN 106356480 A CN106356480 A CN 106356480A CN 201510440332 A CN201510440332 A CN 201510440332A CN 106356480 A CN106356480 A CN 106356480A
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- CN
- China
- Prior art keywords
- stainless steel
- aluminum alloy
- plate
- steel sleeve
- aluminium alloy
- 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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
-
- 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
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion 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
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses an outer package of a cylindrical lithium ion battery. The outer package comprises a stainless steel sleeve rolled into a cylindrical shape, square grooves formed in two ends of the stainless steel sleeve, an aluminum alloy locking piece welded between the two square grooves, and an aluminum alloy base plate welded at the bottom of the stainless steel sleeve, wherein peripheries of the aluminum alloy locking piece, the stainless steel sleeve and the aluminum alloy base plate are surrounded by a layer of resin; a flexible sealing strip is mounted inside the aluminum alloy locking piece and between the two square grooves. A preparation method of the outer package of the cylindrical lithium ion battery provided by the invention comprises the following steps: step one, preparing the stainless steel sleeve; step two, preparing the aluminum alloy locking piece and the aluminum alloy base plate; step three, assembling; and step four, attaching a membrane. According to the outer package of the cylindrical lithium ion battery and the preparation method of the outer package provided by the invention, the capability to bear external impact is stronger; when the reaction is carried out in the battery, the flexible sealing strip can be designed so that the outer package can be extruded in a certain space without causing external expansion of a battery.
Description
Technical field
The present invention relates to a kind of battery component preparation method, particularly to a kind of cylindrical lithium ion battery outer package and preparation method thereof, belong to technical field of lithium ion.
Background technology
Cylindrical lithium ion battery is divided into LiFePO4, cobalt acid lithium, LiMn2O4, the mixing of cobalt manganese, ternary material difference system, and shell is divided into box hat and two kinds of polymer, and different materials system battery has the advantages that different；In prior art mainly based on box hat cylinder ferric phosphate lithium cell, lithium iron battery shows as safety in the charge-discharge performance, output voltage stabilization, energy heavy-current discharge, electrochemically stable performance, use that capacity is high, output voltage is high, good, burning will not be caused because of misoperations such as overcharge, overdischarge and short circuits or explode, operating temperature range width, environmentally friendly；Be widely used in solar energy lamp, lamp for lawn, the standby energy, electric tool, on toy models；For the outer package of cylindrical lithium battery, in prior art, generally packed using aluminum foil material, it has pliability and plasticity well, but its to bear external pressure smaller, in addition in its internal chemical course of reaction, will also result in the phenomenons such as bulge, affect battery.
Content of the invention
(1) technical problem to be solved
For solving the above problems, the present invention proposes a kind of cylindrical lithium ion battery outer package, carries out covering by aluminium alloy and stainless steel foil, it ensure that battery.
(2) technical scheme
The cylindrical lithium ion battery outer package of the present invention, including rolling into columned stainless steel sleeve, and the square groove being opened in stainless steel sleeve two ends；And it is welded in the aluminium alloy locking plate between two square grooves；And it is welded in the aluminum alloy bottom plate of stainless steel sleeve bottom, described aluminium alloy locking plate, stainless steel sleeve and aluminum alloy bottom plate periphery are provided with one layer of resin encloses and sets；Inside described aluminium alloy locking plate, between two square grooves, flexible sealing strip is installed；Described stainless steel sleeve is made up of 120 μm of stainless steel foil plate of thickness；Described aluminium alloy locking plate and aluminum alloy bottom plate are made up of 80 μm of rigid aluminium alloy plate of thickness；Described resin encloses to set and is made up of as 112 μm of resin film thickness.
Described cylindrical lithium ion battery outer package, its preparation method comprises the steps:
The first step, prepared by stainless steel sleeve, take the stainless steel foil plate that thickness is 120 μm, according to battery size, and the reserved 0.3cm length in top and bottom carries out cutting, then edging is carried out to the stainless steel foil plate cutting, be then 0.3cm to the multiple length of upper interval cutting of its top and bottom, width is not more than the equivalent mouth of 0.2cm；And bottom is converted into；Then straight trough is longitudinally opened to the stainless steel foil plate both sides cutting, groove depth is 2/3rds of thickness, groove width 0.2cm；
Second step, aluminium alloy locking plate and aluminum alloy bottom plate preparation, take the rigid aluminium alloy plate direct cutting width that thickness is 80 μm to be 0.4cm, length is battery length, obtains aluminium alloy locking plate, then according to cell diameter size, cutting obtains aluminum alloy bottom plate；
3rd step, assembling, aluminium alloy locking plate and aluminum alloy bottom plate are welded on stainless steel sleeve；
4th step, membrane, 112 μm of resin film is invested aluminium alloy locking plate, aluminum alloy bottom plate and stainless steel sleeve periphery formation resin and encloses and set.
Beneficial effect
Compared with prior art, the cylindrical lithium ion battery outer package of the present invention, it replaces aluminum of the prior art, is used as overall outer package by rustless steel, rustless steel has very high electrical property and chemical stability, will not react with the lithium ion in electrolyte and go bad；In addition add aluminum alloy materials in its several key position, can improve mechanical strength rigidity to a great extent, so the ability bearing external impact is higher；When inside battery reacts, can be extruded in certain space by designing flexible sealing strip, but be not result in that outside batteries expand, be improved the safety of cylindrical lithium ion battery.
Brief description
Fig. 1 is the assembling pre-structure schematic diagram of the present invention.
Specific embodiment
Cylindrical lithium ion battery outer package as shown in Figure 1, including rolling into columned stainless steel sleeve 1, and the square groove 2 being opened in stainless steel sleeve two ends；And it is welded in the aluminium alloy locking plate 3 between two square grooves；And it is welded in the aluminum alloy bottom plate 4 of stainless steel sleeve bottom, described aluminium alloy locking plate 3, stainless steel sleeve and aluminum alloy bottom plate 4 periphery are provided with one layer of resin encloses and sets；Inside described aluminium alloy locking plate, flexible sealing strip 5 is installed between two square grooves；Described stainless steel sleeve 1 is made up of 120 μm of stainless steel foil plate of thickness；Described aluminium alloy locking plate 3 and aluminum alloy bottom plate 4 are made up of 80 μm of rigid aluminium alloy plate of thickness；Described resin encloses to set and is made up of as 112 μm of resin film thickness.
Described cylindrical lithium ion battery outer package, its preparation method comprises the steps:
The first step, prepared by stainless steel sleeve, take the stainless steel foil plate that thickness is 120 μm, according to battery size, and the reserved 0.3cm length in top and bottom carries out cutting, then edging is carried out to the stainless steel foil plate cutting, be then 0.3cm to the multiple length of upper interval cutting of its top and bottom, width is not more than the equivalent mouth of 0.2cm；And bottom is converted into；Then straight trough is longitudinally opened to the stainless steel foil plate both sides cutting, groove depth is 2/3rds of thickness, groove width 0.2cm；
Second step, aluminium alloy locking plate and aluminum alloy bottom plate preparation, take the rigid aluminium alloy plate direct cutting width that thickness is 80 μm to be 0.4cm, length is battery length, obtains aluminium alloy locking plate, then according to cell diameter size, cutting obtains aluminum alloy bottom plate；
3rd step, assembling, aluminium alloy locking plate and aluminum alloy bottom plate are welded on stainless steel sleeve；Then stick flexible sealing strip.
4th step, membrane, 112 μm of resin film is invested aluminium alloy locking plate, aluminum alloy bottom plate and stainless steel sleeve periphery formation resin and encloses and set.
The cylindrical lithium ion battery outer package of the present invention, it replaces aluminum of the prior art, by the assembling of aluminium alloy locking plate, stainless steel sleeve and aluminum alloy bottom plate, it is possible to increase mechanical strength rigidity, so the ability bearing external impact is higher；When inside battery reacts, can be extruded in certain space by designing flexible sealing strip, but it is not result in that outside batteries expand, overall outer package is used as by rustless steel, rustless steel has very high electrical property and chemical stability, will not react with the lithium ion in electrolyte and go bad.
Embodiment described above is only that the preferred embodiment of the present invention is described, and not the spirit and scope of the present invention is defined.On the premise of without departing from design concept of the present invention; various modifications and improvement that this area ordinary person makes to technical scheme; protection scope of the present invention all should be dropped into, the technology contents that the present invention is claimed, all record in detail in the claims.
Claims (2)
1. a kind of cylindrical lithium ion battery outer package it is characterised in that: include roll into columned stainless steel sleeve, and the square groove being opened in stainless steel sleeve two ends；And it is welded in the aluminium alloy locking plate between two square grooves；And it is welded in the aluminum alloy bottom plate of stainless steel sleeve bottom, described aluminium alloy locking plate, stainless steel sleeve and aluminum alloy bottom plate periphery are provided with one layer of resin encloses and sets；Inside described aluminium alloy locking plate, between two square grooves, flexible sealing strip is installed；Described stainless steel sleeve is made up of 120 μm of stainless steel foil plate of thickness；Described aluminium alloy locking plate and aluminum alloy bottom plate are made up of 80 μm of rigid aluminium alloy plate of thickness；Described resin encloses to set and is made up of as 112 μm of resin film thickness.
2. cylindrical lithium ion battery outer package preparation method it is characterised in that: methods described comprises the steps:
The first step, prepared by stainless steel sleeve, take the stainless steel foil plate that thickness is 120 μm, according to battery size, and the reserved 0.3cm length in top and bottom carries out cutting, then edging is carried out to the stainless steel foil plate cutting, be then 0.3cm to the multiple length of upper interval cutting of its top and bottom, width is not more than the equivalent mouth of 0.2cm；And bottom is converted into；Then straight trough is longitudinally opened to the stainless steel foil plate both sides cutting, groove depth is 2/3rds of thickness, groove width 0.2cm；
Second step, aluminium alloy locking plate and aluminum alloy bottom plate preparation, take the rigid aluminium alloy plate direct cutting width that thickness is 80 μm to be 0.4cm, length is battery length, obtains aluminium alloy locking plate, then according to cell diameter size, cutting obtains aluminum alloy bottom plate；
3rd step, assembling, aluminium alloy locking plate and aluminum alloy bottom plate are welded on stainless steel sleeve；
4th step, membrane, 112 μm of resin film is invested aluminium alloy locking plate, aluminum alloy bottom plate and stainless steel sleeve periphery formation resin and encloses and set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510440332.6A CN106356480A (en) | 2015-07-24 | 2015-07-24 | Outer package of cylindrical lithium ion battery and preparation method of outer package |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510440332.6A CN106356480A (en) | 2015-07-24 | 2015-07-24 | Outer package of cylindrical lithium ion battery and preparation method of outer package |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106356480A true CN106356480A (en) | 2017-01-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510440332.6A Pending CN106356480A (en) | 2015-07-24 | 2015-07-24 | Outer package of cylindrical lithium ion battery and preparation method of outer package |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201243063Y (en) * | 2007-12-03 | 2009-05-20 | 天津市航力源科技有限公司 | Cylindrical flexible package lithium ion battery |
| CN201904390U (en) * | 2010-12-22 | 2011-07-20 | 广东工业大学 | Battery outer box |
| JP2012109050A (en) * | 2010-11-15 | 2012-06-07 | Sanyo Electric Co Ltd | Battery pack |
| CN203119003U (en) * | 2013-02-17 | 2013-08-07 | 浙江普耐德新能源科技有限公司 | Lithium battery packaging shell |
-
2015
- 2015-07-24 CN CN201510440332.6A patent/CN106356480A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201243063Y (en) * | 2007-12-03 | 2009-05-20 | 天津市航力源科技有限公司 | Cylindrical flexible package lithium ion battery |
| JP2012109050A (en) * | 2010-11-15 | 2012-06-07 | Sanyo Electric Co Ltd | Battery pack |
| CN201904390U (en) * | 2010-12-22 | 2011-07-20 | 广东工业大学 | Battery outer box |
| CN203119003U (en) * | 2013-02-17 | 2013-08-07 | 浙江普耐德新能源科技有限公司 | Lithium battery packaging shell |
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Application publication date: 20170125 |