CN101366131B - Method for lithium battery injection molding encapsulation - Google Patents
Method for lithium battery injection molding encapsulation Download PDFInfo
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- CN101366131B CN101366131B CN200780002008XA CN200780002008A CN101366131B CN 101366131 B CN101366131 B CN 101366131B CN 200780002008X A CN200780002008X A CN 200780002008XA CN 200780002008 A CN200780002008 A CN 200780002008A CN 101366131 B CN101366131 B CN 101366131B
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- Prior art keywords
- electric core
- injection moulding
- cavity
- core assembly
- lithium battery
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000001746 injection moulding Methods 0.000 title claims description 73
- 238000005538 encapsulation Methods 0.000 title claims description 33
- 229910052751 metal Inorganic materials 0.000 claims abstract description 29
- 239000002184 metal Substances 0.000 claims abstract description 29
- 239000004033 plastic Substances 0.000 claims abstract description 27
- 229920003023 plastic Polymers 0.000 claims abstract description 27
- 229910001416 lithium ion Inorganic materials 0.000 claims abstract description 21
- 229920000642 polymer Polymers 0.000 claims abstract description 20
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000002844 melting Methods 0.000 claims abstract description 6
- 230000008018 melting Effects 0.000 claims abstract description 6
- 230000001681 protective effect Effects 0.000 claims description 31
- 230000005611 electricity Effects 0.000 claims description 26
- 239000005060 rubber Substances 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 13
- 239000000758 substrate Substances 0.000 claims description 13
- 238000002347 injection Methods 0.000 claims description 12
- 239000007924 injection Substances 0.000 claims description 12
- 229920005992 thermoplastic resin Polymers 0.000 claims description 10
- 230000004927 fusion Effects 0.000 claims description 6
- 239000004952 Polyamide Substances 0.000 claims description 4
- 229920002647 polyamide Polymers 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 3
- 239000000088 plastic resin Substances 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 229920005989 resin Polymers 0.000 abstract description 9
- 239000011347 resin Substances 0.000 abstract description 9
- 238000004806 packaging method and process Methods 0.000 abstract description 4
- 229920006345 thermoplastic polyamide Polymers 0.000 abstract 4
- 239000003292 glue Substances 0.000 description 14
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000013022 venting Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 230000037237 body shape Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Images
Classifications
-
- 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
- H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
-
- 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
- H01M10/04—Construction or manufacture in general
- H01M10/0404—Machines for assembling batteries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
- B29L2031/3468—Batteries, accumulators or fuel cells
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
A method for packaging lithium cell by injecting plastic. A face cover of a electric core assembly can be formed by this method. The electric core assembly may be a lithium ion electric core assemblyor a polymer electric core assembly, wherein the polymer electric core assembly was packaged by a metal flake in advance. The method for packaging a lithium cell includes: providing the electric coreassembly with a output terminal into a cavity of a mould and locating therein with a location pin; melting thermoplastic polyamide resin desired to be inject at 170 to 230 degrees Centigrade, to makethe viscosity of the thermoplastic polyamide resin in the range of 340OmPa s to 10,000 mPa s; injecting the said molten thermoplastic polyamide resin into the cavity of the metal mould at the pressureof the injecting plastic in the range of 1 MPa to 10MPa, so as to inject the said thermoplastic polyamide resin into the cavity of the metal mould and coat onto the front face of the electric core assembly to form a plastic face cover.
Description
Technical field
The present invention relates to a kind of injection moulding process technical field, be specifically related to a kind of method of electric core assembly being carried out plastic encapsulation.
Background technology
Along with the increase day by day of people's environmental consciousness, the use of toxic metals such as lead, cadmium is restricted day by day, and the research and development lithium ion battery has been trend of the times.Lithium ion battery is the chemical classes power supply of new generation of showing one's talent the nineties, because it has excellent electrochemical properties and free of contamination characteristic, becomes the desirable supporting power supply of multiple advanced person's portable type electronic product.
Lithium ion battery divides two kinds of polymer lithium ion battery and liquid lithium ionic cells.The maximum difference of polymer Li-ion battery and liquid lithium ionic cell is that the two electrolyte that adopts is different, and liquid lithium ionic cell adopts electrolyte, and its electric core need place steel metal-back or aluminum metal shell.And the electrolyte that polymer Li-ion battery adopts is a colloidal polymer, and its electric core does not need to resemble and places in the metal shell the liquid lithium ion electricity core, but the electrostrictive polymer core is softer, still need encapsulate electric core by hard shell.Because when lithium battery uses usually will by battery case or similarly the installation position install, and compress mechanism by spring etc. and position and be electrically connected, this just needs battery have higher rigidity.
At present, the lithium battery packing forms of soft electric core adopts plastic shell more, and by electric core integral body being carried out injection mo(u)lding encapsulation.Usually during injection moulding the plastic material that is used for injection moulding, be heated to molten condition as polystyrene, and at very high pressure (about 1 * 10
8Pa) be injected under in the cavity of metal die, thereby form injection casing.The glue housing battery of this injection moulding encapsulation, cell thickness increases, and injection moulding forms burr easily, and molten resin material can damage the interior battery of housing when battery in the metal die contacts during injection moulding simultaneously.For encapsulation lithium battery injection moulding process, the about 0.3-0.6MPa that adopts the lower pressure injection moulding is also arranged, although this low-pressure injection molding can avoid damaging the burr that reduces the injection moulding generation, but the low-pressure injection molding of this order of magnitude, precision and technological requirement thereof to injection-moulding device are all very high, and general device is difficult to meet the demands.
Summary of the invention
It is high relatively and be unlikely to damage the injection moulding process of the lithium battery that is injection molding encapsulation that technical problem to be solved by this invention provides a kind of injection pressure, and injection-moulding device that this method for packing is general and technology can both realize, have reduced the requirement to injection-moulding device.
The present invention is achieved by the following technical solutions:
The method of injection moulding of the present invention encapsulation lithium battery is to be achieved by the mould that use has a cavity, and concrete step is as follows:
Electric core assembly with lead-out terminal is positioned in the cavity of mould and by the pilot pin in the cavity of mould locatees; The fusion thermoplastic resin of melting viscosity in 3400mPa.s to 10000mPa.s scope, under the injection pressure in 1MPa to 10MPa scope, described fusion thermoplastic resin is injected in the cavity of metal die, make plastic resin be filled into the cavity of mould and the front end face that is coated on electric core assembly forms the plastic cement cover.
Preferred as said method, thermoplastic resin adopts viscosity at the polyamide thermoplastic resin of melting viscosity in 3400mPa.s to 10000mPa.s scope, and that injection temperature is controlled in the 170-230 ℃ of scope injection moulding is effective.
The mould that adopts in the such scheme is made up of mold and bed die, the upper and lower mould of indent is combined to form the injection moulding cavity that can place electric core assembly, the place ahead of cavity is provided with forming blocks, forming blocks is provided with protruding block towards the sidewall of cavity, and the wall of described mold and bed die indent is provided with pilot pin.
The lithium battery core assembly of injection moulding process encapsulation of the present invention can be the liquid lithium ion electricity core assembly that has hard shell, can also be soft polymer electricity core assembly.
Liquid lithium ion electricity core assembly includes liquid lithium ion electricity core, protective cover that has housing and the protective circuit substrate that is provided with lead-out terminal; protective cover is placed on the lithium-ion electric core front end face; generally speaking, the profile of protective cover can be bigger than electric core on the thickness direction of electric core.The upper and lower wall of protective circuit substrate is provided with orientation angle.
The soft polymer lithium-ion electric core of soft polymer electricity core assembly is packaged in the housing of being made by sheet metal; the housing face of pressing close to electric core front end of described housing is for being injection-moulded in the plastic rubber surface on the metal shell in advance; be provided with the protective circuit substrate of band lead-out terminal before the plastic rubber surface, the electrode on the electric core front end face passes plastic rubber surface and is connected with the on-chip lead-out terminal of protective circuit.
The utility model compared with prior art has following remarkable result:
1, the injecting glue pressure of injection moulding encapsulation lithium battery of the present invention employing on the basis that is not damaged that guarantees packaged battery, is compared the ultralow pressure injection moulding and is made Shooting Technique simplify in 1MPa to 10Mpa scope.Because of adopting littler pressure to carry out injection moulding, very high to the stability requirement of injection-moulding device, when product design such as electric core assembly front end cover thickness were lower than 0.50mm, fraction defective can significantly increase.And the present invention to Shooting Technique and injection mold equipment require lowly, the product stability high for plastic specification requirement is good.
2, injection mold of the present invention has and the corresponding forming blocks of injection moulding cover shape, injection-molded finished rate height, but also can on the protruding block on the forming blocks, add effective insulating element according to the needs of the electric core assembly that is injection molding.
3, the electric core assembly of injection moulding encapsulation of the present invention connects the plastic rubber surface protective cover before having the electric core front end face of electrode, can be used as the location that connects the nickel sheet and uses, and the more important thing is that the venting that can protect electric core front end face is not subjected to the damage of injection moulding high pressure.
4, the soft polymer of injection moulding cover electricity core assembly among the present invention, its soft electric core is by the sheet metal protective packaging.Soft polymer electricity core assembly injection moulding encapsulation cover production behind the sheet metal protective packaging is stable.
Description of drawings
Fig. 1 is the mould appearance schematic diagram of injection moulding encapsulation lithium battery of the present invention;
Fig. 2 is the structural representation that the electric core assembly of injection moulding encapsulation is positioned at mould cavity;
Fig. 3 is the local enlarged diagram of A portion among Fig. 2;
Fig. 4 is the electric core assembly schematic diagram of injection moulding encapsulation of the present invention;
Fig. 5 is the decomposing schematic representation after the electric core assembly injection moulding upper cover among Fig. 4;
Fig. 6 is the schematic appearance of Fig. 5;
Fig. 7 is another the electric core assembly schematic diagram among the present invention;
Fig. 8 is the decomposing schematic representation after the electric core assembly injection moulding upper cover among Fig. 7;
Fig. 9 is the schematic appearance of Fig. 8.
Embodiment
Below by embodiment the method for injection moulding encapsulation lithium battery of the present invention is done concrete detailed description the in detail
Can form the cover that encapsulates electric core assembly by the inventive method, cover is wrapped in the electrode tip of electric core and electric core lead-out terminal wherein.The mould that adopts in the inventive method is shown in Fig. 1～3, mould includes mold 11 and bed die 12, mold and bed die have inner fovea part respectively, and the involutory back of the inner fovea part of upper and lower mould forms the injection moulding cavity, and electric core assembly 2 to be packaged is positioned in the cavity.The mould seam crossing is provided with hole for injecting glue up and down, injects thermoplastic resin by hole for injecting glue 10, and the electric core assembly front end face in cavity forms the injection moulding cover, just can realize the injection moulding encapsulation to lithium battery.
The electric core assembly 2 that is positioned over injection moulding in the mould cavity among the present invention is the example explanation with liquid lithium ion electricity core assembly; this electricity core assembly includes liquid lithium ion electricity core 27; electricity core front end venting place is provided with protective cover 26; protective cover is ready-made plastic body; it is the box body shape of opening, and protective cover is placed on the venting place of electric core front end.Be fixedly connected with protective circuit substrate 23 before the venting, battery output terminal is disposed thereon, and the electrode of electric core front end links together with lead-out terminal by anodal nickel sheet 25 and negative pole nickel sheet 24.The upper and lower wall of protective circuit substrate is provided with the orientation angle 230 of projection.The electric core assembly that liquid lithium ion electricity core, protective cover and protective circuit substrate are formed is positioned in the mould cavity; mould cavity is " T " font; that end of the protective circuit substrate of electricity core assembly is placed on the expanding reach place of cavity; on the wall of the cavity corresponding with the protective circuit substrate pilot pin 14 is arranged, this pilot pin cooperates the fixedly effect of protective circuit substrate of playing with the on-chip orientation angle of protective circuit.The protective circuit substrate of embodiment of the present invention except lead-out terminal is arranged, also have calibrating terminal; during injection moulding encapsulation cover 22 for lead-out terminal and calibrating terminal are exposed outside; be provided with forming blocks 13 in the place ahead of mould cavity of the present invention; just forming blocks is positioned at the apposition position of mould up and down; forming blocks be provided with respectively on the sidewall of cavity with can the protruding block 131 consistent with the shape that calibrating terminal and lead-out terminal dock, calibrating terminal and lead-out terminal do not have resin to adhere on it in the time of can guaranteeing the injection moulding cover.The protruding block that docks with calibrating terminal as required in the practical operation can be processed by the insulation material, and is workable.
The mould that the present invention adopts above-mentioned and electric core assembly structure to match utilizes the resin material of appointment to carry out lithium battery injection moulding encapsulation.When adopting the inventive method injection moulding encapsulation, earlier treating that the electric core assembly of injection moulding is positioned in the cavity of mould, cooperates the correct position place that makes electric core assembly be positioned at mould cavity by pilot pin in the time of matched moulds with orientation angle; The thermoplastic resin that is used for injection moulding, for example polyamide is positioned over to heat in the heater and makes its fusion again.When the melting viscosity of the polyamide of fusion is in 3400mPa.s to 10000mPa.s scope the time, injecting glue pressure is controlled in 1MPa to the 10MPa scope carries out injecting glue.Wherein the temperature of melting of injecting glue is controlled at 170～230 ℃, considers that the each point variations in temperature of injecting glue system is bigger, and the melt temperature of indication in the inventive method is meant the temperature at the injecting glue nozzle place that is connected with the mould hole for injecting glue.
For its melt temperature of thermoplastic resin of injecting glue in not being confined to 170～230 ℃ scope, and the selected temperature range of the present invention normally use can reach the effect of steady production, the carbonization that causes plastics because of the too high meeting of temperature is accelerated, and the casting resin viscosity diminishes and causes that unnecessary phenomenons such as burr appear in the product of injection moulding.Moreover, select 170～230 ℃ injecting glue temperature can reduce requirement to mould and electric core supplied materials because of the size supplied materials of common electric core just has variation about 0.10mm.
In the pressure and temperature scope of regulation molten resin is injected mould cavity by the mould hole for injecting glue at last, the electric core assembly front end injection moulding at mould cavity under the effect of mould molding piece forms cover.The electricity core assembly before the injection moulding cover in advance the plastic cement drain pan 29 of injection formed be bonded in the tail end of electric core assembly, and wrap trade mark 28 battery that gets product behind the injection formed cover.
In the electric core assembly of the encapsulation of adopting in this method, protective cover is arranged at the withstand voltage properties that can effectively improve electric core on the front end venting of electric core, and the impact that is subjected to injection pressure of protecting electric core weak part is for protecting electric core.Can obviously reduce simultaneously requirement to injection-moulding device.Use high relatively injecting glue pressure to carry out the injection moulding encapsulation.
In the method for above-mentioned injection moulding encapsulation lithium battery, the electric core assembly of encapsulation is the example explanation with liquid lithium ion electricity core assembly.This method was fit to the electric core assembly that soft polymer electricity core constitutes too when actual injection moulding encapsulated.The soft polymer electricity core assembly that is used for the injection moulding cover among the present invention is to wrap up with foil in advance, and the electric core that the soft electric core of sheet metal wrapping and encapsulating is compared the injection moulding encapsulation will approach, and can improve electric core capacity.
Referring to Fig. 6,7; the soft electric core 36 of soft polymer electricity core assembly 3 is wrapped in the housing that sheet metal makes; and the electrode end surface of electric core is protected by plastic rubber surface; this plastic rubber surface is similar to the protective cover in the liquid lithium ion electricity core assembly, can play the effect of the electric core of protection when giving electric core assembly injection moulding cover 32.The housing that above-mentioned sheet metal is made is by the last sheet metal 37 of box body shape and 33 involutory compositions of following sheet metal, last sheet metal front end face is connected with plastic rubber surface 371 by the injection moulding mode, and the front end of sheet metal is an opening down, and tail end also is connected with afterbody plastic rubber surface 34 by the injection moulding mode.When the involutory formation housing of upper and lower sheet metal; the plastic rubber surface of last sheet metal is involutory with the front opening of following sheet metal; the place can extend the electrode of soft electric core out in involutory slit, and the baffle with lead-out terminal 35 that makes electric core electrode to be connected with housing the place ahead forms and electrically connects.Also have on the same upper and lower wall of baffle and be convenient to the orientation angle that cooperates with the pilot pin of mould cavity.
Plastic rubber surface as injection moulding on the sheet metal on the preferred above-mentioned housing is a toothed surfaces; when soft polymer electricity core assembly being positioned in the mould cavity injection moulding encapsulation cover; the dentation plastic rubber surface can be used for protecting electric core; reinforce the intensity of injection moulding cover; fill the gap of baffle and electric core, effectively thermal shock and the compression shock of protective polymers electricity core in injection moulding process.
And compare with lithium-ion electric core for the soft polymer electricity core of packing with sheet metal, its outward appearance has reached demand, can also use the mode of laser or silk-screen that the sheet metal surface is handled on the sheet metal surface, can realize the effect of trade mark, thereby increase the capacity of battery.
Claims (8)
1. injection moulding encapsulates the method for lithium battery, it is characterized in that: in turn include the following steps:
Electric core assembly with lead-out terminal is positioned in the cavity of mould and by the pilot pin in the cavity of mould locatees;
The fusion thermoplastic resin of melting viscosity in 3400mPa.s to 10000mPa.s scope,
Under the injection pressure in 1MPa to 10MPa scope, described fusion thermoplastic resin is injected in the cavity of metal die, make plastic resin be filled into the cavity of mould and the front end face that is coated on electric core assembly forms the plastic cement cover.
2. the method for injection moulding encapsulation lithium battery according to claim 1, it is characterized in that: described thermoplastic resin is a polyamide.
3. the method for injection moulding encapsulation lithium battery according to claim 2, it is characterized in that: injection temperature is controlled in 170～230 ℃ of scopes.
4. the method for injection moulding encapsulation lithium battery according to claim 3, it is characterized in that: described mould is made up of mold (11) and bed die (12), upper and lower mould with inner fovea part is combined to form the injection moulding cavity that can place electric core assembly, the place ahead of cavity is provided with forming blocks (13), forming blocks is provided with protruding block (131) towards the sidewall of cavity, and the wall of described mold and bed die indent is provided with pilot pin (14).
5. the method for injection moulding encapsulation lithium battery according to claim 4; it is characterized in that: described electric core assembly includes liquid lithium ion electricity core, protective cover and is provided with the protective circuit substrate of lead-out terminal, and described protective cover is placed on the lithium-ion electric core front end face.
6. the method for injection moulding encapsulation lithium battery according to claim 5, it is characterized in that: the upper and lower wall of described protective circuit substrate is provided with orientation angle (230).
7. the method for injection moulding encapsulation lithium battery according to claim 4; it is characterized in that: described electric core assembly includes soft polymer electricity core; soft polymer electricity core is packaged in the housing of being made by sheet metal; the housing face of pressing close to electric core front end of described housing is for being injection-moulded in the plastic rubber surface on the metal shell in advance; be provided with the protective circuit substrate of band lead-out terminal before the plastic rubber surface, the electrode on the electric core front end face passes plastic rubber surface and is connected with the on-chip lead-out terminal of protective circuit.
8. the method for injection moulding encapsulation lithium battery according to claim 7, it is characterized in that: described plastic rubber surface is a toothed surfaces.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2007/001617 WO2008141474A1 (en) | 2007-05-17 | 2007-05-17 | Method for packaging lithium cell by injecting plastic |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101366131A CN101366131A (en) | 2009-02-11 |
| CN101366131B true CN101366131B (en) | 2010-06-02 |
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ID=40133650
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200780002008XA Expired - Fee Related CN101366131B (en) | 2007-05-17 | 2007-05-17 | Method for lithium battery injection molding encapsulation |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101366131B (en) |
| WO (1) | WO2008141474A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102024919A (en) * | 2010-11-08 | 2011-04-20 | 深圳市睿德电子实业有限公司 | Polymer battery low-pressure injection molding packaging method and low-pressure injection molding polymer battery |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102024918B (en) * | 2010-11-08 | 2012-12-05 | 深圳市睿德电子实业有限公司 | Method for controlling size of aluminum-shell battery along length direction and low-pressure injection molding aluminum-shell battery |
| CN104282931A (en) * | 2013-07-02 | 2015-01-14 | 国家电网公司 | Plastic packaging method for power-battery equalization module and plastically-packaged power-battery equalization module |
| CN104241555B (en) * | 2014-06-27 | 2016-08-17 | 惠州市德赛电池有限公司 | A kind of lithium battery encapsulation method |
| CN104333987B (en) * | 2014-10-15 | 2017-06-06 | 东莞劲胜精密组件股份有限公司 | Ultra-thin waterproof case battery integrated formed structure, making apparatus and preparation method |
| CN114024019A (en) * | 2021-10-29 | 2022-02-08 | 中汽创智科技有限公司 | Preparation method and application of all-solid-state battery cell |
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|---|---|---|---|---|
| CN1373033A (en) * | 2001-03-02 | 2002-10-09 | 京瓷株式会社 | Injection moulding process |
| US20050208345A1 (en) * | 2004-01-28 | 2005-09-22 | Yoon Seog J | Secondary battery of assemble-type structure |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3643792B2 (en) * | 2001-06-29 | 2005-04-27 | 三洋電機株式会社 | Pack battery and manufacturing method thereof |
| JP3728288B2 (en) * | 2002-10-31 | 2005-12-21 | 三洋電機株式会社 | Pack battery |
| CN100414741C (en) * | 2006-02-28 | 2008-08-27 | 惠州市德赛电池有限公司 | Method for producing battery output terminal |
-
2007
- 2007-05-17 WO PCT/CN2007/001617 patent/WO2008141474A1/en active Application Filing
- 2007-05-17 CN CN200780002008XA patent/CN101366131B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1373033A (en) * | 2001-03-02 | 2002-10-09 | 京瓷株式会社 | Injection moulding process |
| US20050208345A1 (en) * | 2004-01-28 | 2005-09-22 | Yoon Seog J | Secondary battery of assemble-type structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102024919A (en) * | 2010-11-08 | 2011-04-20 | 深圳市睿德电子实业有限公司 | Polymer battery low-pressure injection molding packaging method and low-pressure injection molding polymer battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101366131A (en) | 2009-02-11 |
| WO2008141474A1 (en) | 2008-11-27 |
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