CN100435402C - Molding of secondary battery and method for moulding secondary battery - Google Patents
Molding of secondary battery and method for moulding secondary battery Download PDFInfo
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- CN100435402C CN100435402C CNB2005100741692A CN200510074169A CN100435402C CN 100435402 C CN100435402 C CN 100435402C CN B2005100741692 A CNB2005100741692 A CN B2005100741692A CN 200510074169 A CN200510074169 A CN 200510074169A CN 100435402 C CN100435402 C CN 100435402C
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- inlet
- cavity
- housing
- resin
- protective circuit
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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
- H01M10/04—Construction or manufacture in general
- H01M10/0404—Machines for assembling batteries
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- 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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- 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
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- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Battery Mounting, Suspending (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
A mold for a battery, such as a secondary battery, and a method of molding a battery, such as a secondary battery, using the mold, uses a minimum amount of a molding substance, such as a resin, has its molding time shortened, and has a safety vent of a can being prevented from being fractured by high pressure during a molding process. Runners, through which a resin flows, are arranged parallel to cavities and the safety vent of the can is positioned closest to the gates, into which a resin is injected after the can and a protective circuit board are seated in the cavities. Due to the structure of the runners of the mold and the location of the safety vent of the can, the amount of resin used and the molding time are reduced. A fracture of the safety vent is avoided since a lower pressure occurs at the location closest to the gates during a resin filling process.
Description
Technical field
The present invention relates to molded to battery; more specifically be; the present invention relates to be used for the mould of battery and with the molded battery of this mould; the method of secondary cell for example; wherein use minimum molding substance, resin for example is with plate; for example the protective circuit plate remains on the battery, make to use molded time of resin shorten and the safety vent that in molding process, prevents battery container owing to breaking that high pressure causes.
Background technology
As known in the art; for fear of battery overcharge, overdischarge, overcurrent, because the short circuit that external loading causes etc.; secondary cell, especially square lithium ion secondary battery are electrically connected positive terminal and the negative terminal of protective circuit plate to housing (battery case).This housing has the safety vent that forms on cathode terminal one side, this safety vent has the wall thickness thinner than housing remainder, thereby if there is abnormal pressure to produce, safety vent breaks so, and internal gas is discharged into the outside.
In order to strengthen the mechanical couplings power between housing and the protective circuit plate and to protect them not to be affected by the external environment, housing and protective circuit plate are included in the casing cover, and are assembled into goods, and casing cover is made of loam cake and lower cover.
Recently, used a kind of method, wherein with resin fill between housing and the protective circuit plate the space or wherein with complete covering shell of resin and protective circuit plate, its objective is the quantity that reduces parts and boost productivity.For example, upper and lower mould is provided with the cavity of housing case and protective circuit plate, and be connected to cavity and when resin is filled as the inlet and the runner of passage.Then, housing and protective circuit plate all are placed in the cavity of mold and bed die, inject the resin with high temperature and high pressure towards cavity by runner and the inlet that is communicated with runner.As a result, by resin with housing and protective circuit plate mechanical fixation securely.
Yet the problem of this mould is that the runner and the cavity that serve as resin channels are formed with very big distance, and the amount of resin that is retained in runner and inlet is greater than the amount of resin that is used to fill the space between housing and the protective circuit plate.This has wasted resin.Especially, finish resin molded and battery after mould is removed, be retained in the runner of mould and the resin in the inlet and be in hardening state.Therefore, the resin of the costliness that can not be utilized again must be removed and remove from runner and inlet.
In addition, resin arrives cavity and need take a long time, because runner is provided with away from cavity and very long.This has just prolonged the filling time.Also possible is, the cavity especially space between housing and the protective circuit plate can not fully be full of by resin, and this process finishes with the sort of state.This causes the bad molded of secondary cell.
Conventional resin molding method also has such problem, because the safety vent of housing is away from the inlet setting of injecting resin, so safety vent is easy to break owing to the stuffing pressure of resin.This is far away more because of the inlet that flows into from resin, just becomes high more because resin is filled the air pressure that causes, and the safety vent with wall thickness thinner than the remainder of housing may break to enclosure interior owing to this high pressure.
If safety vent breaks by this way, may produce second problem so, just, the resin of high pressure may penetrate in the housing, and battery between the operating period electrolyte may be easy to along the boundary leakage between housing and the resin to the outside.
Summary of the invention
Therefore, carry out the present invention and occur in the problems referred to above of the prior art, and the purpose of this invention is to provide and be used for battery with solution; the mould of secondary cell for example; it minimizes and is used for plate, and routine protective circuit plate remains on the molding substance in the battery container, for example waste of resin.
Another object of the present invention provides the mould that is used for battery, and this mould minimizes the molded time of using resin.
Another object of the present invention provides the method for molded battery, and this method prevents owing to use breaking of housing safety vent that the high pressure in the process of resin molded housing and protective circuit plate causes in mould.
In order to realize the purpose of these and other, a kind of mould is provided, comprise: include the bed die of the first flow on surface disposed thereon, first flow has the predetermined degree of depth and definite length extended point-blank, and this first flow is provided to make resin to inject its neutralization to pass through from it; Have desired depth and be connected to first flow at least one first the inlet, this at least one first flow is provided to along direction guiding resin, first inlet has a side that is formed on first flow and first cavity with desired depth, this cavity is provided to housing case and protective circuit plate therein, and this housing and protective circuit plate are provided to limit a pre-fixed gap and be electrically connected to each other between them; Mold, this mold has second runner, second inlet and second cavity that is arranged on its lower surface, second runner has the shape identical with first flow, and be arranged on position corresponding to first flow, second inlet has and the identical shape of first inlet, and being arranged on the position that enters the mouth corresponding to first, second cavity has the shape identical with first cavity, and is arranged on the position corresponding to first cavity.
It all is the rectangle with minor face and long limit that first cavity and second cavity are preferably each, and wherein first inlet and second position, long limit that is set at corresponding to their each cavitys in space that enters the mouth becomes 10 ° to 80 ° angle to be connected with the space.
The first flow and second runner preferably are arranged to be parallel to the long limit of their each cavitys.
First inlet and second inlet are preferably the inclined-plane, and this inclined-plane is provided to make near more apart from the space between housing and the protective circuit plate, and it is just more little that resin flow is crossed the cross-sectional area that passes through behind first inlet and second inlet.
In order further to realize the purpose of these and other, a kind of method is provided, comprising: housing is set on its front surface, to have positive terminal, the negative terminal of vicinity positive terminal one side and the safety vent of contiguous negative terminal; The positive terminal and the negative terminal of housing are electrically connected to the protective circuit plate; Mould is set to have the cavity of desired depth, be provided with this cavity with the inlet of a side shell and protective circuit plate integrally being installed thereon and being had an adjacent cavities with guiding resin stream by the space between housing and the protective circuit plate, and have runner and guide resin flow to be communicated with inlet; On the cavity of mould, lay housing and protective circuit plate, with the inlet of the transverse part jig in the space between housing and protective circuit plate; Resin is injected into runner, makes resin by inlet and be injected into the housing that is placed in cavity inside and the space between the protective circuit plate.
This method comprises also that preferably the safety vent with housing is positioned between negative terminal and the inlet.
This method comprises also that preferably the safety vent of housing and the distance between the inlet are provided with less than the distance between negative terminal and the inlet.
This method comprises also that preferably the safety vent of positioning housing is to be adjacent to inlet.
This method preferably also comprises injects safety vent, negative terminal and the positive terminal of resin to flow through housing successively, and resin is adhered to safety vent, negative terminal and the positive terminal of housing and fills the space.
Inject after the resin, resin injects vestige and preferably is retained on the resin part that is adjacent to inlet.
Inject after the resin, resin injects vestige and preferably is retained on the transverse part of the resin that is adjacent to safety vent.
This method preferably also is included between the safety vent of housing and the protective circuit plate and inserts insulating trip.
Still in order further to realize these and other objects, a kind of mould is provided, comprise: the bed die that comprises the first flow on surface disposed thereon, first flow has the predetermined degree of depth and linearity ground definite length extended, and first flow is set to wherein and from it to be passed through so that molding substance injects; Have desired depth and be connected to first flow at least one first the inlet, this at least one first inlet is configured to along direction guiding molding substance, that first inlet has the side that is formed on first flow and have the predetermined degree of depth first cavity, this cavity is configured to housing case and plate therein, and housing and plate are configured to have a pre-fixed gap and are electrically connected to each other between them; And mold, have second runner, second inlet and second cavity that are arranged on its lower surface, second runner has shape identical with first flow and the position that is arranged on corresponding to first flow, second inlet has with the first identical shape of inlet and is arranged on position corresponding to first inlet, and second cavity has the shape identical with first cavity and is arranged on position corresponding to first cavity.
It all is the rectangle with minor face and long limit that first and second cavitys are preferably each, and wherein first inlet and second position, long limit that is set at corresponding to their each cavitys in space that enters the mouth becomes 10 ° to 80 ° angle to be connected with the space.
The first flow and second runner preferably are arranged to be parallel to their long limits separately.
First inlet and second inlet preferably have the inclined-plane, and this inclined-plane is configured to make that the space between shrinking away from theshell body and the protective circuit plate is near more, and the cross-sectional area that molding substance passes through after flowing through first and second inlets is just more little.
In order further to realize the purpose of these and other, a kind of method is provided, comprising: housing is set on its front surface, to have the first terminal, second terminal of vicinity the first terminal one side and the safety vent of contiguous second terminal, one side; First and second terminals of housing are electrically connected to plate; Mould is set to have the cavity of desired depth, this cavity is set thereon so that shell and plate integrally to be installed; The inlet of a side that adjacent cavities is set, and is provided with runner and guides flowing of molding substance to be communicated with inlet by the space between housing and the plate with the guiding molding substance; Laying housing and plate inlet on the cavity of mould with the transverse part jig in the space between housing and plate; Molding substance is injected into runner, makes molding substance by inlet and be injected into the housing that is placed in cavity inside and the space between the plate.
This method comprises further that preferably the safety vent with housing is positioned between second terminal and the inlet.
This method preferably also comprises the safety vent of housing and the distance between entering the mouth is provided with less than the distance between second terminal and the inlet.
This method comprises also that preferably the safety vent of positioning housing is to be adjacent to inlet.
This method preferably also comprises safety vent, second terminal and the first terminal of injection molding material to flow through housing successively, and molding substance is adhered to safety vent, second terminal and the first terminal of housing and fills the space.
After the injection molding material, molding substance injects vestige and preferably remains in the molding substance part that is adjacent to inlet.
After the injection molding material, molding substance injects the transverse part that vestige preferably remains in the molding substance that is adjacent to safety vent.
This method preferably also is included between the safety vent of housing and the plate and inserts insulating paper.
According to the mould that is used for battery of the present invention, as mentioned above, the long side direction that resin injects and the runner that passes through is parallel to cavity forms, and makes the advance waste minimum of the shortest path and resin of resin.
Also can minimize the molded time of using resin,, fill the space between housing and the protective circuit plate then because resin is advanced along the transverse part of cavity.
According to the method for molded battery of the present invention, in molding process, because high pressure breaks, because safe Kongzui is provided with near inlet, its pressure is not lower in molding process for the safety vent of housing.
Therefore, though finish resin molded after, safety vent still can operate as normal.This prevented the safety vent of resin by housing be injected into inner or any electrolyte leakage to outside.
Description of drawings
When considered in conjunction with the accompanying drawings, by with reference to following specific descriptions, along with becoming, the present invention is more readily understood, and more complete evaluation of the present invention and its many attendant advantages will be more apparent, identical in the accompanying drawings Reference numeral is represented identical or similar parts, wherein:
Figure 1A is the decomposition diagram that is used for the mould of secondary cell according to embodiments of the invention;
Figure 1B is placed in the housing on the mould of Fig. 1 and the perspective view of protective circuit plate;
Fig. 2 A is by according to the molded housing of the mould that is used for secondary cell of the embodiment of the invention and the decomposition diagram of protective circuit plate;
Fig. 2 B is the perspective view at the rear portion of protective circuit plate;
Fig. 3 A is according to the perspective view of laying housing and protective circuit plate in the method for the molded secondary cell of embodiments of the invention on mould;
Fig. 3 B is placed in the housing on the bed die and the vertical view of protective circuit plate, has wherein omitted mold;
Fig. 3 C is the vertical view of amplification in the zone 1 of Fig. 3 B;
Fig. 3 D is the sectional view along the line 2-2 of Fig. 3 B;
Fig. 4 A is the vertical view that is filled with resin according to embodiments of the invention in the method for molded secondary cell in the space between housing and protective circuit plate;
Fig. 4 B is the sectional view along the line 3-3 of Fig. 4 A; With
Fig. 5 is the perspective view of the secondary cell that has been molded according to embodiments of the invention.
Embodiment
Hereinafter, one exemplary embodiment of the present invention will be described with reference to the drawings.In following description and accompanying drawing, use identical Reference numeral to represent identical or similar parts, and omitted being repeated in this description same or similar parts.
Figure 1A is the decomposition diagram that is used for the mould of secondary cell according to embodiments of the invention, and Figure 1B is placed in the housing on the mould of Figure 1A and the view of protective circuit plate.
The mould that is used for secondary cell according to the embodiment of the invention comprises bed die 100 and mold 200; on bed die 100, lay housing 10 and protective circuit plate 17; define space 27 between housing 10 and protective circuit plate 17, the top that mold 200 is fastened on bed die 100 makes resin to inject and fills space 27.
Bed die 100 has the first flow 110 on the upper surface 101 that is formed on it, and the length that these first flow 110 straight-line extensions are predetermined and have the predetermined degree of depth makes resin to inject and flows through it.Form at least one first inlet 120 to be communicated with first flow 110 and to guide resin along direction with respect to 110 one-tenth angles of runner.Form first cavity 130 in a side that is close to first flow 110; it has the predetermined degree of depth and is communicated with first inlet 120; make housing 10 and protective circuit plate 17 can lay thereon, be limited with pre-fixed gap 27 between them, they are electrically connected to each other simultaneously.
In order to minimize length, the long limit 132 that first flow 110 can be parallel to first cavity 130 forms.This layout makes and can minimize the amount of resin that remains in the first flow 110 and first inlet 120 after molded finishing, and shortens the time of injecting resin.Even when first cavity 130 was square basically, first flow 110 certainly still was parallel to its side and forms.
Mold 200 has the shape identical with bed die 100.Especially, mold 200 has second runner 210 on the lower surface 201 that is formed on it, and it is fastened on the upper surface 101 of bed die 100 with identical shape in the position corresponding to first flow 110.Mold 200 also has at second inlet 220 that forms with identical shape corresponding to first inlet, 120 position and second cavity 230 that forms with identical shape in the position corresponding to first cavity 130.Second cavity 230 certainly is a rectangle, has minor face 231 and long limit 232.
The direction of resin solid arrow mark in the accompanying drawing flow into the space 27 between housing 10 and the protective circuit plate 17.
According to another aspect of the present invention, the method for molded secondary cell comprises: housing and protective circuit plate are connected to each other; Mould is provided; Housing and protective circuit plate be placed on the mould and with resin fill mould.
Below with reference to Fig. 2 A and 2B description housing and protective circuit plate are electrically connected to each other.
The negative terminal 13 that the front surface of housing 10 is equipped with safety vent 11, is centered on by insulator 12, and positive terminal 14.Negative terminal 13 is couple to negative pole pin 15, and positive terminal 14 is couple to anodal pin 16.Housing 10 has basic for rectangle and be placed on the protective circuit plate 17 of housing 10 fronts, with prevent battery overcharge, overdischarge, overcurrent, because the short circuit that external loading causes etc.The front surface of protective circuit plate 17 is equipped with type to determine terminal 19, outside negative terminal 20 and outside positive terminal 21.Protective circuit plate 17 also has a plurality of circular projection 22a and 22b that are formed on its top and the lower part, and they are projected into outside and and resin interlocking subsequently.In addition, insulating paper 26 can also be inserted between protective circuit plate 17 and the housing 10 to avoid negative terminal 15 to contact with the positive pole zone of housing 10 and the safety vent 11 that causes breaking owing to the high pressure in the resin filling process.
The rear surface of protective circuit plate 17 is equipped with protective circuit part 23, connects the negative pole splicing ear 24 and anode connection terminal 25 that is connected anodal pin 16 of negative pole pin 15.
Be described in to 3E below with reference to Fig. 3 A and lay housing and protective circuit plate on the mould.
Fig. 3 A is placed in the housing on the mould and the perspective view of protective circuit plate.Fig. 3 B is placed in the housing on the bed die that does not have mold and the vertical view of protective circuit plate.Fig. 3 C is that the vertical view of amplification in zone 1 of Fig. 3 B and Fig. 3 D are the sectional views along the line 2-2 of Fig. 3 B.
So that space 27 and first inlet, 120 and second inlet, 220 modes of facing are arranged on space 27 between housing 10 and the protective circuit plate 17.Especially, be provided with at the most close first and second inlets 120 and 220 places and be formed on the housing 10 and have safety vent 11 less than the wall thickness of housing 10 remainders.Especially, between the negative terminal 13 and first and second inlets 120 and 220, safety vent 11 is set.In other words, the distance between the safety vent 11 and first and second inlets 120 and 220 is less than the distance between the negative terminal 13 and first and second inlets 120 and 220.More particularly, the safety vent 11 of housing 10, negative pole pin 15 and anodal pin 16 are provided with away from first and second inlets 120 and 220 successively.Safety vent 11 is arranged on first and second cavitys 130 of the most close first and second inlets 120 and 220 and 230 right-hand member, negative pole pin 15 is arranged near the center of first and second cavitys 130 and 230, and anodal pin 16 is arranged on the left end of first and second cavitys 130 and 230, shown in Fig. 3 C.Certainly, as mentioned above, the position in the space 27 between housing 10 and the protective circuit plate 17 can be identical with the position of first and second inlets 120 and 220.Therefore, space 27 can be flow through the resin filling of first and second runners 110 and 210 and first and second inlets 120 and 220 at an easy rate.First and second inlets 120 and 220 can have the inclined-plane 121 and 221 of less width, make that the space 27 between shrinking away from theshell body 10 and the protective circuit plate 17 is near more, and the cross-sectional area that resin passes through after flowing through first and second inlets 120 and 220 becomes more little.
Fig. 4 A is the view that is filled with resin in the method for molded secondary cell in the space 27 between housing 10 and protective circuit plate 17 according to the embodiment of the invention, and Fig. 4 B is the cross-sectional view along the line 3-3 of Fig. 4 A.
After having laid housing 10 and protective circuit plate 17, (temperature: about 200-300 degree, pressure: about 0.5-1.0MPa) resin 18 of HTHP injects by first and second runners 110 and 120.The resin 18 of Zhu Ruing is by first and second inlets 120 and 220 tree-shaped with first and second runners 110 and 210 one-tenth then, and moves being used for towards first and second cavitys 130 and 230 and to fill.Especially, the space 27 between resin 18 filling housings 10 and the protective circuit plate 17.As mentioned above, resin 18 is adhered to safety vent 11, negative pole and anodal pin 15 and 16 of housing 10 successively.At last, resin 18 fully keeps housing 10 and protective circuit plate 17 with mechanical type.
Flow through for first and second inlet moment of 120 and 220 at resin 18, the air pressure that is formed in the space 27 has minimum value.This is because the air that remains in the space 27 is also not a lot of by resin 18 compressions.At this low-pressure state, resin 18 especially is fastened on its lip-deep insulating paper 26 through safety vent 11, and safety vent 11 does not bear high pressure.
Through after safety vent 11 and the negative pole pin 15, resin 18 is near anodal pins 16 and compressed air widely.Increased air pressure so sharp.Yet housing 10 is not easy owing to this high pressure breaks, because be connected to the thin-wall regions that the housing 10 of anodal pin 16 and positive terminal 14 is not positioned at the high-pressure area.
Shown in Fig. 4 B, the circular projection 22a that is formed on the bottom of protective circuit plate 17 applies power facing to the basal surface of the cavity 130 of bed die 100, and the circular projection 22b that is formed on top applies power facing to the basal surface of the cavity 230 of mold 200.As a result, between first cavity 130 of protective circuit plate 17 and bed die 100, form predetermined space 27a, and between second cavity 230 of protective circuit plate 17 and mold 200, form predetermined space 27b by circular projection 22a and 22b.Certainly, be formed on type on the protective circuit plate 17 and determine that terminal 19, outside negative terminal 20 and outside positive terminal 21 apply power towards the sidewall of first cavity 130 of bed die 100 with towards the sidewall of second cavity 230 of mold 200.Therefore, in the resin filling process, when the space 27 between housing 10 and the protective circuit plate 17 is filled with resin, in gap 27 that the front surface of protective circuit plate 17 is limited by space 27a and 27b ' also be filled with resin simultaneously.Certainly, resin can not arrive the surface of terminal 19,20 and 21, because they apply power towards the side surface of first and second cavitys 130 and 230.
Fig. 5 is the perspective view of the molded secondary cell of the method for molded secondary cell according to an embodiment of the invention.
After removing secondary cell, remove the resin 18 of the hardening state that remains in the first flow 110 and first inlet 120, and proceed to be used for another resin filling process of another housing and protective circuit plate.
The remaining trace of the resin 18 of first and second inlets 120 and 220 has been passed through in Reference numeral 18 ' expression.Especially, after finishing molding process, when when mould is removed secondary cell, at resin 18 be retained between the resin residue thing in first and second inlets 120 and 220 and produce physical separation, and stayed the vestige 18 that separates '.Certainly, on housing 10, formed the most close vestige 18 ' safety vent 11.
As mentioned above, the advantage that is used for the mould of secondary cell according to the present invention is, resin injects and the runner that passes through is parallel to the direction formation on the long limit of cavity, makes the advance waste minimum of the shortest path and resin of resin.
Can also minimize the molded time of using this resin, fill space between housing and the protective circuit plate then because resin is advanced along the lateral part of cavity.
According to the method that is used for molded secondary cell of the present invention, the safety vent of housing does not break because of the high pressure of molding process, because safe Kongzui is provided with near inlet, its pressure is less in molding process.
Therefore, though finish resin molded after, safety vent still can operate as normal.Prevented like this safety vent of resin by housing penetrate into inner or any electrolyte leakage to outside.
Although described one exemplary embodiment of the present invention for illustrative purposes, what but those skilled in the art it will be appreciated that is, under the situation that does not break away from scope and spirit of the present invention as claimed in claim, can carry out multiple improvement, interpolation and replacement.
It is " mould that is used for secondary cell " of 2004-17436 and 2004-21423 and the priority of " method that is used for molded secondary cell " that the application requires the application number in the submission in Korea S Department of Intellectual Property on March 15th, 2004 and on March 30th, 2004.Their content is combined in this to do reference.
Claims (16)
1, a kind of mould comprises:
Bed die comprises that the first flow on surface disposed thereon, described first flow have the predetermined degree of depth and definite length extended point-blank, and described first flow is provided to make resin to inject wherein and from it to flow through that described bed die also comprises
At least one first inlet, have the predetermined degree of depth and be connected to first flow, described at least one first inlet is provided to along direction guiding resin, described first inlet has a side that is formed on described first flow and first cavity with predetermined degree of depth, described first cavity is provided to housing and protective circuit plate are contained in wherein, and described housing and protective circuit plate are provided to limit a pre-fixed gap and be electrically connected to each other between them; And
Mold, have second runner, second inlet and second cavity that are arranged on its lower surface, described second runner has the shape identical with described first flow and is arranged on position corresponding to described first flow, described second inlet has the shape identical with described first inlet and is arranged on the position that enters the mouth corresponding to described first, and described second cavity has the shape identical with described first cavity and is arranged on position corresponding to described first cavity
Each all is the rectangle with minor face and long limit for wherein said first cavity and second cavity, and wherein said first inlet and second enters the mouth to be set at corresponding to they of space and becomes 10 ° to 80 ° angle to be connected with described space in the position, long limit of cavity separately.
2, according to the mould of claim 1, the wherein said first flow and second runner are provided to be parallel to the long limit of their cavitys separately.
3, according to the mould of claim 1; wherein said first inlet and second inlet have the inclined-plane; described inclined-plane is provided to make near more apart from the space between housing and the protective circuit plate, and it is just more little that described resin flow is crossed the cross-sectional area that passes through after first and second inlets.
4, a kind of method of molded battery comprises:
Housing is set, to have the positive terminal on its front surface, the negative terminal of described positive terminal one side of vicinity and the safety vent of contiguous described negative terminal one side;
The positive terminal and the negative terminal of described housing are electrically connected to the protective circuit plate;
Mould is set, with cavity, guide resin flow with the inlet of a side and to have the runner that is communicated with described inlet with contiguous described cavity with desired depth;
Described housing and described protective circuit plate are placed on the cavity of described mould, locate the inlet of described mould with the lateral part in the space between described housing and described protective circuit plate; And
Described resin is injected into runner, makes described resin by described inlet and be injected into the housing that is arranged in the described cavity and the space between the protective circuit plate,
Comprise that also the safety vent with described housing is positioned between described negative terminal and the described inlet.
5,, comprise that also safety vent that described housing is set and the distance between the described inlet are less than the distance between described negative terminal and the described inlet according to the method for claim 4.
6,, also comprise the safety vent of described housing is located adjacent near the described inlet according to the method for claim 4.
7,, comprise also and inject described resin that described resin bonding is to safety vent, negative terminal and the positive terminal of described housing and fill described space with safety vent, negative terminal and the positive terminal by described housing successively according to the method for claim 4.
8, according to the method for claim 4, wherein after injecting described resin, resin injects vestige and is retained on the part adjacent to the resin of described inlet.
9, according to the method for claim 4, wherein after injecting described resin, resin injects vestige and is retained on the lateral part adjacent to the resin of safety vent.
10,, also be included between the safety vent of described housing and the described protective circuit plate and insert insulating trip according to the method for claim 4.
11, a kind of mould comprises:
Bed die, the first flow that comprises surface disposed thereon, described first flow has the predetermined degree of depth and definite length extended point-blank, described first flow is set wherein and from it flows through so that molding substance injects, described bed die also comprises at least one first inlet, have the predetermined degree of depth and be connected to described first flow, described at least one first inlet is provided to along direction guiding molding substance, described first inlet has a side that is formed on described first flow and first cavity with predetermined degree of depth, described first cavity is provided to housing and protective circuit plate are contained in wherein, and described housing and described protective circuit plate are provided to limit betwixt a pre-fixed gap and are electrically connected to each other; And
Mold, have second runner, second inlet and second cavity that are arranged on its lower surface, described second runner has the shape identical with described first flow and is arranged on position corresponding to described first flow, described second inlet has the shape identical with described first inlet and is arranged on the position that enters the mouth corresponding to described first, and described second cavity has the shape identical with described first cavity and is arranged on position corresponding to described first cavity
Each all is the rectangle with minor face and long limit for wherein said first cavity and described second cavity, and wherein said first inlet and second enters the mouth and to be provided to becoming 10 ° to 80 ° angle to be connected with described space in the position, long limit of cavity separately corresponding to they of space.
12, the long limit that method according to claim 11, the wherein said first flow and second runner are parallel to their each cavitys is provided with.
13, method according to claim 11; wherein said first inlet and second inlet have the inclined-plane; described inclined-plane is provided to make near more apart from the space between housing and the protective circuit plate, and the cross-sectional area that described molding substance passes through after flowing through described first inlet and second inlet is just more little.
14, a kind of method of molded battery comprises:
Housing is set, with safety vent in second terminal with the first terminal on its front surface, contiguous described the first terminal one side, contiguous described second terminal, one side;
The first terminal and second terminal of described housing are electrically connected to the protective circuit plate;
Mould is set to have the cavity of desired depth, described cavity is arranged to described housing of integral installation thereon and described protective circuit plate;
One side inlet porting of contiguous described cavity flow through hole between described housing and the described protective circuit plate with the guiding molding substance, and the runner that setting is communicated with described inlet guides the mobile of described molding substance;
Described housing and described protective circuit plate are placed on the cavity of described mould, locate the inlet of described mould with the transverse part office in the space between described housing and described protective circuit plate; And
Described molding substance is injected into described runner makes described molding substance by described inlet and be injected into the housing that is arranged in the described cavity and the space between the protective circuit plate, wherein
After injecting described molding substance, described molding substance injects vestige and is retained on the lateral part adjacent to the molding substance of described safety vent.
15, method according to claim 14, wherein after injecting described molding substance, described molding substance injects vestige and is retained on the part adjacent to the molding substance of described inlet.
16,, also be included between the safety vent of described housing and the protective circuit plate and insert insulating paper according to the method for claim 14.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020040017436A KR100551406B1 (en) | 2004-03-15 | 2004-03-15 | Mold for secondary battery |
| KR17436/04 | 2004-03-15 | ||
| KR21423/04 | 2004-03-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1694295A CN1694295A (en) | 2005-11-09 |
| CN100435402C true CN100435402C (en) | 2008-11-19 |
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ID=35353161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100741692A Expired - Fee Related CN100435402C (en) | 2004-03-15 | 2005-03-15 | Molding of secondary battery and method for moulding secondary battery |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100551406B1 (en) |
| CN (1) | CN100435402C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101872307B1 (en) * | 2015-04-15 | 2018-06-29 | 주식회사 엘지화학 | Method for Preparing Battery Pack Using Fixing Structure for Hot Melting and Battery Pack Prepared by Using the Same |
| CN108724622A (en) * | 2017-04-24 | 2018-11-02 | 深圳市朗能电池有限公司 | Mold |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002033766A1 (en) * | 2000-10-20 | 2002-04-25 | Matsushita Electric Industrial Co., Ltd. | Method and device for forming outer package body of product |
| CN1373035A (en) * | 2001-03-02 | 2002-10-09 | 京瓷株式会社 | Metal mould for injection moulding machine |
| CN1435900A (en) * | 2002-01-31 | 2003-08-13 | 三洋电机株式会社 | Method for mfg. lamination cell and lamination cell made thereby |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3332081B2 (en) * | 1999-09-07 | 2002-10-07 | 日本ピラー工業株式会社 | Mold for manufacturing fuel cell separator and method for manufacturing fuel cell separator |
| JP2003011178A (en) * | 2001-06-29 | 2003-01-15 | Shin Kobe Electric Mach Co Ltd | Mold for molding spacer for lead storage battery |
| JP3561266B2 (en) * | 2002-12-10 | 2004-09-02 | 株式会社名機製作所 | Method for manufacturing fuel cell separator and molding die |
| KR200345894Y1 (en) * | 2004-01-06 | 2004-03-25 | 지엠에스전자(주) | mold of PCM molding device and method for li-ion battery |
-
2004
- 2004-03-15 KR KR1020040017436A patent/KR100551406B1/en not_active IP Right Cessation
-
2005
- 2005-03-15 CN CNB2005100741692A patent/CN100435402C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002033766A1 (en) * | 2000-10-20 | 2002-04-25 | Matsushita Electric Industrial Co., Ltd. | Method and device for forming outer package body of product |
| CN1373035A (en) * | 2001-03-02 | 2002-10-09 | 京瓷株式会社 | Metal mould for injection moulding machine |
| CN1435900A (en) * | 2002-01-31 | 2003-08-13 | 三洋电机株式会社 | Method for mfg. lamination cell and lamination cell made thereby |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1694295A (en) | 2005-11-09 |
| KR100551406B1 (en) | 2006-02-09 |
| KR20050092294A (en) | 2005-09-21 |
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Granted publication date: 20081119 Termination date: 20170315 |