CN100583533C - Secondary battery - Google Patents
Secondary battery Download PDFInfo
- Publication number
- CN100583533C CN100583533C CN200710079956A CN200710079956A CN100583533C CN 100583533 C CN100583533 C CN 100583533C CN 200710079956 A CN200710079956 A CN 200710079956A CN 200710079956 A CN200710079956 A CN 200710079956A CN 100583533 C CN100583533 C CN 100583533C
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- China
- Prior art keywords
- cover plate
- plate
- secondary cell
- terminal
- retainer
- Prior art date
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- 239000011347 resin Substances 0.000 claims abstract description 63
- 229920005989 resin Polymers 0.000 claims abstract description 63
- 230000001681 protective effect Effects 0.000 claims abstract description 39
- 230000008878 coupling Effects 0.000 claims abstract description 5
- 238000010168 coupling process Methods 0.000 claims abstract description 5
- 238000005859 coupling reaction Methods 0.000 claims abstract description 5
- 238000012856 packing Methods 0.000 claims description 37
- 238000009413 insulation Methods 0.000 claims description 21
- 230000000712 assembly Effects 0.000 claims description 17
- 238000000429 assembly Methods 0.000 claims description 17
- 238000007789 sealing Methods 0.000 abstract description 4
- 238000000465 moulding Methods 0.000 abstract 2
- 229910052744 lithium Inorganic materials 0.000 description 23
- 230000004224 protection Effects 0.000 description 18
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 14
- 239000003792 electrolyte Substances 0.000 description 13
- 150000002641 lithium Chemical class 0.000 description 9
- 239000006183 anode active material Substances 0.000 description 7
- 239000006182 cathode active material Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 2
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229910018095 Ni-MH Inorganic materials 0.000 description 1
- 229910018477 Ni—MH Inorganic materials 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910021385 hard carbon Inorganic materials 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
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
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
-
- 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
-
- 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
-
- 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
- H01M50/147—Lids or covers
-
- 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
- H01M50/147—Lids or covers
- H01M50/155—Lids or covers characterised by the material
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/581—Devices or arrangements for the interruption of current in response to temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The present invention provides a secondary battery includes a bare cell having an electrode assembly. The electrode assembly has cathode plates, anode plates and separators insulating the cathode plates from the anode plates. The secondary battery also includes a can housing the electrode assembly, the can having an opening for receiving the electrode assembly and a cap assembly having a cap plate sealing an opening of the can, the cap plate having a terminal through-hole, an electrode terminal inserted into the terminal through-hole, and a gasket insulating the electrode terminal from the terminal through-hole. A protective circuit board is coupled to the bare cell and a molding resin molds the protective circuit board with the bare cell. The gasket includes a coupling extension constraining the molding resin at the cap plate.
Description
The cross reference of related application
The application requires the interests of two parts of korean patent applications, be respectively the 10-2006-18708 korean patent application of submitting on February 27th, 2006, with the 10-2006-103358 korean patent application of submitting on October 24th, 2006, two parts of applications are all submitted to Korea S Department of Intellectual Property, and their full content passes through reference in this merging.
Technical field
The present invention relates to secondary cell, more particularly, relate to a kind of secondary cell with improvement syndeton of the resin molded part that is overmolded on the plain battery.
Background technology
Along with reaching its maturity of video camera, portable phone, portable computer and other electronic equipments, at provide the secondary cell of energy to carry out a large amount of research for these equipment.Secondary cell can be, such as, nickel-cadmium cell, Ni-MH battery, nickel-zinc cell, lithium secondary battery and other similar batteries.In these batteries, lithium secondary battery can be recharged, but also compact conformation and have high power capacity.Lithium secondary battery is owing to the high-energy-density of its high working voltage and Unit Weight is widely used in the high-tech electronics apparatus field.
Lithium secondary battery can comprise plain battery, and this plain battery is inserted in the metal can by the electrode assemblie that will have minus plate, positive plate and dividing plate, injects the electrolyte in this jar also this jar sealing to be formed.As above formed plain battery is typically provided with the electrode terminal with this jar insulation.This electrode terminal forms an electrode of this lithium secondary battery, and this jar itself forms another electrode of this lithium secondary battery simultaneously.Therefore, the minus plate of described electrode assemblie links to each other with electrode terminal with this jar respectively with positive plate.
By this plain battery is linked to each other with safety device; and insert battery pack or utilize resin molded; and form this lithium secondary battery; described safety device for example is the protective circuit module (PCM) that comprises second class protection element and protective circuit plate, and wherein said second class protection element for example is bimetallic or positive temperature coefficient (PTC) device.The safety device of described lithium secondary battery links to each other with anode with negative electrode, increases owing to battery temperature for example or overcharge at cell voltage/when state's discharge increases sharply, prevent the danger that battery is blasted by the blocking-up electric current.
Conventional lithium secondary battery generally includes plain battery and is positioned at the protective circuit plate on described plain battery top.This lithium secondary battery also comprises the second class protection element that places this plain battery top.This second class protection element is formed at this plain battery sidepiece or top according to the structure of lithium secondary battery.
This plain battery comprises jar, electrode assemblie and cap assemblies.This jar is a canister, its open top, and have approximate hexahedral shape.This electrode assemblie comprises minus plate, dividing plate and positive plate, and they all together are arranged in described jar with electrolyte.When this electrode assemblie by jar open top insert jar in after, this open top utilizes described cap assemblies and sealed.
In having the lithium secondary battery of resin, described cap assemblies, second class protection element and protective circuit plate can be protected.This jar and resin molded part form the outside of lithium secondary battery, and described electrode terminal is exposed to the top of this resin molded part.
Yet when the lithium secondary battery of routine was assembled, the material of the resin molded part that battery protection assembly and this plain battery is fixedly connected was different with the material of this plain battery, and the contact area of this resin molded portion is narrow.Therefore, the bonding strength of inter-module is low, and if this resin molded part be not distorted, this resin molded part can not be placed in its molded state.Like this, lead plate be expanded usually or the reinforced structure of second class protection element by independent formation, cause higher manufacturing cost.
Summary of the invention
The invention provides a kind of secondary cell, this secondary cell comprises plain battery, and described plain battery has: electrode assemblie, and it comprises minus plate, positive plate and makes described minus plate and the dividing plate of described positive plate insulation; Be used to hold the jar of this electrode assemblie, this jar is provided with an opening, to be used for the placing said electrodes assembly; And cap assemblies.Described cap assemblies comprises: be used to seal the cover plate of described jar of opening, this cover plate has a terminal through-hole; Electrode terminal, it is inserted in the described terminal through-hole; And packing ring, it is used for described electrode terminal and the insulation of described terminal through-hole.This secondary cell further comprises: the protective circuit plate that is connected to described plain battery; With described protective circuit plate and described plain battery are carried out molded moulded resin.
Described packing ring comprises the connection extension, to be used for that described moulded resin is limited in described plain battery.This connecting portion can be retainer (stopper), and itself and described packing ring form and extend radially from this packing ring.Described retainer can comprise horizontal component, and this horizontal component is roughly parallel to described cover plate and extends, and this horizontal component can be positioned at described cover plate on the outside.Described retainer can further comprise supporting leg, and this supporting leg extends to described cover plate vertically from the horizontal component of described retainer, and described retainer can outwards coming to a point with for example shape level and smooth or ladder from internal diameter towards the outside at described cover plate gradually.Described retainer can comprise a plurality of grooves, and described a plurality of grooves are suitable for filling with described moulded resin.
According to the present invention, provide another embodiment of the present invention.This secondary cell has electrode terminal, and this electrode terminal comprises connecting portion, uses and described moulded resin is limited in the described plain battery.Described electrode terminal can comprise: head, and it is electrically connected to described protective circuit portion, and described retainer is formed on this head; With the main body that forms with described head, this main body links to each other with described cover plate, and is provided with insulating washer between described electrode terminal and described cover plate.The diameter of described retainer can be greater than the diameter of described electrode terminal head.Described retainer can comprise step and/or a plurality of groove, and it is described resin molded to be used for further restriction.
Description of drawings
Fig. 1 is the cutaway view of the secondary cell of one exemplary embodiment according to the present invention;
Fig. 2 is a vertical view of removing the plain battery of resin molded part;
Fig. 3,4,5,6 and 7 is partial sectional views of the gasket construction of one exemplary embodiment according to the present invention;
Fig. 8 is the cutaway view on the secondary cell top of another one exemplary embodiment according to the present invention;
Fig. 9 is the perspective view of the electrode terminal of the secondary cell among Fig. 8;
Figure 10,11 and 12 is partial sectional views of the one exemplary embodiment of electrode terminal of the present invention.
Embodiment
As shown in Figure 1, the lithium secondary battery 100 of one exemplary embodiment comprises according to the present invention: plain battery 110; With the protective circuit plate 150 that is connected to this plain battery.
In order to make anode terminal 132 and cover plate 131 insulation, between them, be provided with tubular gasket 133.And the terminal board 135 that is connected with the bottom electrical of anode terminal 132 is formed at the lower surface of cover plate 131, and insulation board 134 is set to terminal board 135 and anode terminal 132 with respect to cover plate 131 electric insulations.Insulation board 134 can be insulation board or the band of being made by for example polypropylene (PP), polyphenylene sulfide (PPS) or the polyimides (PI) of electrolyte resistance.
Selectively, minus plate 123 and positive plate 125 can be arranged to, and electrode terminal 132 is a cathode terminal, and cover plate 131 and jar 120 are anode terminal.
In Fig. 1, second class protection element 140 is connected between anode terminal 132 and the protective circuit plate 150.This second class protection element 140 can be PTC element, bimetallic or thermo-fuse.When the PTC element was used as second class protection element 140, insulating tape was winding to this second class protection component ambient, thereby it is insulated mutually with cover plate 131 and miscellaneous part.
By this lithium secondary battery 100 is molded, cap assemblies 130, second class protection element 140 and protective circuit plate 150 are protected with resin.Jar 120 and resin molded part 160 form the outside of these lithium secondary batteries 100, so that the electrode terminal 152 of protective circuit plate 150 exposes by this resin molded part 160.
Referring now to Fig. 1 and Fig. 2, retainer 133a stretches out from packing ring 133, so that resin molded part 160 firmly is connected with metal cover board 131.This retainer 133a stretches out from packing ring 133 also can be integrally moulded with this packing ring.
In an one exemplary embodiment, retainer 133a flatly is formed at an end of packing ring 133, promptly along the direction that is parallel to cover plate 131.Therefore, but potting resin in the space between retainer 133a and cover plate 131, thus increase the power that is connected between cover plate 131 and the resin molded part 160.
In an one exemplary embodiment, described resin molded part 160 is injected into the space between cover plate 131 and the retainer 133a and is cured.Because second class protection element 140 and protective circuit plate 150 are by resin molded part 160 protections, and this resin molded part connects securely by retainer 133a, so this second class protection element 140 also is firmly connected on the cover plate 131.
Fig. 3,4,5,6 and 7 is the partial sectional view according to secondary cell one exemplary embodiment of the present invention.
As shown in Figure 3, packing ring 233 constitutes by forming a plurality of groove 233b from the teeth outwards, and when this lithium secondary battery was assembled, described surface contacted with described resin molded part.Groove 233b also can be formed on the outer surface of retainer 233a of the packing ring 233 that stretches out from packing ring 233 levels.When lithium secondary battery is assembled, is filled with resin among the groove 233b, thereby between described resin molded part and cover plate 131, provides fastening being connected.
As shown in Figure 4, packing ring 333 can constitute like this, and promptly it comprises: the retainer 333a that vertically stretches out from packing ring 333; With the supporting leg 333c that vertically stretches out from this retainer 333a.This supporting leg 333c can be certain at interval with cover plate 131 distance so that resin can flow into the space between this supporting leg and the retainer 333a.Packing ring 333 has improved bonding strength, thereby greatly reduces the possibility that resin molded part 160 is separated with cover plate 131.And this resin molded part is also littler with respect to cover plate 131 possibilities separated or distortion.
As shown in Figure 5, packing ring 433 comprises a retainer 433d, and this retainer 433d outwards comes to a point with stairstepping gradually from first end to the second end of described packing ring.Identical with the reason of above-mentioned packing ring, packing ring 433 has improved the bonding strength between described resin molded part and the cover plate 131.
In cutaway view shown in Figure 6, the head 533a of packing ring 533 outwards comes to a point with level and smooth shape gradually from first end to the second end.Space between this head 533a and the cover plate 131 is filled with described resin molded part, thereby increases the connection power of this resin molded part with respect to cover plate 131.
In packing ring shown in Figure 7 633, extend to the upper surface top of cover plate 131 with the integrally moulded main body 633b of the head 633a of packing ring 633.Like this, the head 633a and the space between the cover plate 131 of described packing ring can be filled with described resin molded part, thereby increase the connection power of this resin molded part with respect to cover plate 131.
With reference to Fig. 8 and Fig. 9, secondary cell according to another one exemplary embodiment comprises electrode assemblie 240, this electrode assemblie 240 by pile up the minus plate 210 that has cathode connection sheet 250, the positive plate 220 that has anode lug 260 and dividing plate 230 and after the plate that is piled up of reeling form.This secondary cell further comprises: housing 200, and it is used to hold described electrode assemblie 240, and at one end is provided with opening; Cap assemblies 300, it is used for the described opening of seal casinghousing 200, and this cap assemblies is electrically connected with cathode connection sheet 250 and anode lug 260; Protective circuit parts 400, it is positioned on the printed circuit board (PCB), and this printed circuit board (PCB) has circuit and the electric terminal that is used for safety device, and these protective circuit parts are electrically connected with cap assemblies 300; With resin molded part 500, its resin by fusing connects the part of described cap assemblies and the part of protective circuit parts.
Minus plate 210 is provided with the cathode active material layer that is formed on the cathode current collector body, and positive plate 220 is provided with the anode active material layer that is formed on the anode current collector body.Dividing plate 230 is arranged between described minus plate and the positive plate, to prevent the short circuit between the battery lead plate 210,220 and ion is moved.Cathode connection sheet 250 combines with minus plate 230 and is electrically connected with cover plate 350, and anode lug 260 combines with positive plate 220 and is electrically connected with electrode terminal 310.
More particularly, described cathode active material layer can comprise: the stratified mixture that contains lithium; Be used to improve the adhesive of connection power; Be used to improve conductive conductive materials.Described cathode current collector body can be for aluminum, and not only as the path of the electric charge that is produced in the described cathode active material layer, and as the carrier of described cathode active material layer.Described cathode active material layer can be attached on the wide surface of described cathode current collector body, and the uncoated part of negative electrode that does not have a cathode active material layer is formed at a side of described minus plate.This cathode connection sheet 250 can combine with the uncoated part of this negative electrode.
In addition, positive plate 220 comprises anode current collector body and anode active material layer.This anode active material layer can comprise: hard carbon or graphite; And be used to improve between the active material particle adhesive that connects power.This anode current collector body can be aluminum, and not only is used as the path of the electric charge that is produced in the described anode active material layer, and is used as the carrier of described anode active material layer.This anode active material layer is attached on the wide surface of described positive plate 220, and the uncoated part of anode that does not have an anode active material layer is formed at a side of described positive plate.This anode lug 260 can combine with the uncoated part of this anode.
Described dividing plate 230 can place between minus plate 210 and the positive plate 220, thereby this minus plate 210 is insulated mutually with positive plate 220.Dividing plate 230 can be made by polyethylene (PE) or polypropylene (PP), but the material of described dividing plate is not limited thereto.Dividing plate 230 can include electrolyte and can be the form of liquid phase or gel.
The electrolyte entrance 352 that electrolyte is injected is positioned on the cover plate 350, and can with welding or other fixed forms this electrolyte entrance be sealed by electrolyte entrance stopper 370.Cover plate 350 also can comprise safe ventilation mouth (not shown), with the blast that prevents that this lithium secondary battery from taking place owing to the increase of internal pressure.
Resin molded part 500 is carried out molded formation by utilizing resin with part protective circuit parts 400 and partial cover plate 350.Electrode terminal 310 can comprise the coupling part, and described resin molded part is limited with respect to cover plate 350 in this coupling part.For example, electrode terminal 310 can form the form that its head 311 stretches out from packing ring 360.
Between head 311 and cover plate 350, can produce the space, in this space, to fill described resin molded part.Like this, the connection power that resin molded part 500 is limited on the cover plate 350 can be improved.
According to another one exemplary embodiment, described resin molded part can form retainer and be restricted by the head at electrode terminal.With reference to Figure 10, electrode terminal 310 ' comprises retainer 314 ', this retainer 314 ' the be provided with head 311 ' of diameter greater than packing ring 360.Utilize this retainer 314 ', resin molded part 500 can be restricted.As mentioned above, the retainer 314 ' that is formed on the electrode terminal 310 is used for the resin molded part 500 of restricted part, and this resin molded part 500 links to each other with cover plate 350 securely.
According to Figure 11, be the further described resin molded part of restriction, electrode terminal 310 " retainer 314 " be provided with step 316.As mentioned above, this retainer 314 " be provided with step 312, like this, cover plate 350 improves with the power that is connected between the resin molded part 500.
According to Figure 12, electrode terminal 310 " ' head 311 " ' has that retainer 314 is arranged " diameter of ' and a plurality of groove 318, and this retainer 314 " ' is greater than the diameter of packing ring 360, and a plurality of groove 318 is formed on the surface of described retainer.As mentioned above, retainer 314 " ' improved the vertical power of connection between cover plate 310 and the resin molded part 500.Retainer 314 " ' on described groove can be formed on the lower surface and peripheral surface thereof of this retainer.The size of this secondary cell and the structure of described cap assemblies and protective circuit parts are depended in the quantity of described groove and position.
As mentioned above, provide a kind of secondary cell, it has improved gasket construction, and this gasket construction is used to make electrode terminal and cover plate insulation.Therefore, the bonding strength of the described resin molded part of formation outward appearance improves.
Although one exemplary embodiment of the present invention is described for the purpose of example, but it will be appreciated by those skilled in the art that, under situation about not departing from the scope of the present invention with spirit, but modifications and variations of the present invention are, and all such modifications all will be included in the description of claims with changing.
Claims (16)
1, a kind of secondary cell comprises:
Plain battery, it comprises:
Electrode assemblie, it comprises minus plate, positive plate and with the dividing plate of described minus plate and the insulation of described positive plate;
Jar, it is used to hold described electrode assemblie, and this jar has the opening that is used for the placing said electrodes assembly; With
Cap assemblies, it comprises:
Cover plate, it is used to seal described jar opening, and this cover plate has terminal through-hole;
Electrode terminal, it is inserted into described terminal through-hole; With
Packing ring, it is used for described electrode terminal and the insulation of described terminal through-hole;
The protective circuit plate, it is connected to described plain battery; With
Moulded resin, it is used for carrying out molded to described protective circuit plate and described plain battery;
Wherein said packing ring comprises the connection extension, to be used for that described moulded resin is limited in described cover plate.
2, secondary cell as claimed in claim 1, wherein said connection extension comprises retainer, and this retainer and described packing ring forms and extending radially out along described packing ring.
3, secondary cell as claimed in claim 2, wherein said retainer comprises horizontal component, and this horizontal component is roughly parallel to described cover plate and extends.
4, secondary cell as claimed in claim 3, the horizontal component of wherein said packing ring be positioned at described cover plate on the outside.
5, secondary cell as claimed in claim 3, wherein said retainer further comprises supporting leg, this supporting leg vertically extends to described cover plate from the horizontal component of described retainer.
6, secondary cell as claimed in claim 1, wherein said packing ring comprises a plurality of grooves, and described a plurality of groove is suitable for filling with described moulded resin.
7, secondary cell as claimed in claim 2, wherein said retainer outwards and gradually comes to a point from internal diameter towards the outside described cover plate.
8, secondary cell as claimed in claim 2, wherein said retainer is stairstepping from second diameter towards the far-end in the outside towards first diameter of the near-end in the outside to this described cover plate of described cover plate, and this second diameter is greater than this first diameter.
9, a kind of secondary cell comprises:
Plain battery, it comprises:
Electrode assemblie, it comprises minus plate, positive plate and with the dividing plate of described minus plate and the insulation of described positive plate;
Jar, it is used to hold described electrode assemblie, and this jar has the opening that is used for the placing said electrodes assembly; With
Cap assemblies, it comprises:
Cover plate, it is used to seal described jar opening, and this cover plate has terminal through-hole;
Electrode terminal, it is inserted into described terminal through-hole; With
Packing ring, it is used for described electrode terminal and the insulation of described terminal through-hole;
The protective circuit plate, it is electrically connected to described electrode terminal and described cover plate; With
Moulded resin, it is used for carrying out molded to described protective circuit plate and described plain battery;
Wherein said electrode terminal comprises the connection extension, to be used for that described moulded resin is limited in described cover plate.
10, secondary cell as claimed in claim 9, wherein said connection extension is a retainer, and this retainer and described electrode terminal form and stretch out from described electrode terminal.
11, secondary cell as claimed in claim 10, wherein said electrode terminal comprises:
Head, it is electrically connected to described protective circuit parts, and described retainer is formed on this head; With
Main body, it forms with described head and links to each other with described cover plate, and is provided with insulating washer between described electrode terminal and described cover plate.
12, secondary cell as claimed in claim 11, the diameter of wherein said retainer is greater than the diameter of the head of described electrode terminal.
13, secondary cell as claimed in claim 12, wherein said retainer comprises step, to be used for further limiting described moulded resin.
14, secondary cell as claimed in claim 12, wherein said retainer comprises a plurality of grooves, to be used for further limiting described moulded resin.
15, a kind of packing ring that is used for secondary cell, this secondary cell comprises: plain battery; The protective circuit plate, it is electrically connected to described plain battery; And moulded resin, it is used for described protective circuit plate and described plain battery are carried out molded, and wherein said plain battery comprises: electrode assemblie; Be used to hold the jar of described electrode assemblie, this jar has opening, and described electrode assemblie can insert by this opening; With the cover plate that is used to seal described opening, this cover plate has terminal through-hole, and this packing ring comprises:
Washer body, it is suitable for being arranged between described electrode terminal and the described terminal through-hole; With
The coupling part, it stretches out from described washer body;
Wherein said coupling part is suitable for described moulded resin is limited on the described cover plate.
16, a kind of electrode terminal that is used for secondary cell, this secondary cell comprises: plain battery; The protective circuit plate, it is electrically connected to described plain battery; And moulded resin, it is used for described protective circuit plate and described plain battery are carried out molded, and wherein said plain battery comprises: electrode assemblie; Be used to hold the jar of described electrode assemblie, this jar has opening, and described electrode assemblie can insert by this opening; With the cover plate that is used to seal described opening, this cover plate has terminal through-hole, and this electrode terminal comprises:
Head, it is electrically connected to described protective circuit plate;
Main body, itself and described head form, and link to each other with described cover plate; With
Connect extension, it is positioned on the described head, and is suitable for described moulded resin is limited on the described cover plate.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020060018708A KR100795679B1 (en) | 2006-02-27 | 2006-02-27 | Secondary battary |
| KR1020060018708 | 2006-02-27 | ||
| KR1020060103358 | 2006-10-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101030657A CN101030657A (en) | 2007-09-05 |
| CN100583533C true CN100583533C (en) | 2010-01-20 |
Family
ID=38614130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710079956A Expired - Fee Related CN100583533C (en) | 2006-02-27 | 2007-02-27 | Secondary battery |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100795679B1 (en) |
| CN (1) | CN100583533C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100867928B1 (en) | 2007-09-27 | 2008-11-10 | 삼성에스디아이 주식회사 | Protection circuit module and battery pack using the same |
| KR100954029B1 (en) * | 2007-11-12 | 2010-04-20 | 삼성에스디아이 주식회사 | Protection Circuit Module for rechargeable battery and rechargeable battery using the PCM |
| KR101116492B1 (en) | 2010-02-12 | 2012-02-27 | 에스비리모티브 주식회사 | Rechargeable battery |
| CN103931016B (en) * | 2011-11-11 | 2016-08-17 | 三洋电机株式会社 | Set of cells |
| US9570719B2 (en) * | 2013-05-22 | 2017-02-14 | Samsung Sdi Co., Ltd. | Secondary battery |
| HK1195446A2 (en) * | 2014-08-08 | 2014-12-19 | Minwa Energy Lithium Battery Technology Co Ltd | A lithium-ion batteries and its charging and discharging methods |
| KR102275333B1 (en) * | 2014-10-30 | 2021-07-09 | 삼성에스디아이 주식회사 | Rechargeable battery |
| KR102275423B1 (en) | 2015-01-28 | 2021-07-09 | 삼성에스디아이 주식회사 | Secondary Battery |
| KR102519439B1 (en) * | 2015-11-04 | 2023-04-07 | 삼성에스디아이 주식회사 | Rechargeable battery |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100571236B1 (en) * | 2004-02-10 | 2006-04-13 | 삼성에스디아이 주식회사 | Secondary Battery |
-
2006
- 2006-02-27 KR KR1020060018708A patent/KR100795679B1/en active IP Right Grant
-
2007
- 2007-02-27 CN CN200710079956A patent/CN100583533C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101030657A (en) | 2007-09-05 |
| KR100795679B1 (en) | 2008-01-21 |
| KR20070088894A (en) | 2007-08-30 |
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