CN105958078A - Battery current collector - Google Patents
Battery current collector Download PDFInfo
- Publication number
- CN105958078A CN105958078A CN201610505299.5A CN201610505299A CN105958078A CN 105958078 A CN105958078 A CN 105958078A CN 201610505299 A CN201610505299 A CN 201610505299A CN 105958078 A CN105958078 A CN 105958078A
- Authority
- CN
- China
- Prior art keywords
- battery
- bottom cover
- current collector
- cathode bottom
- center column
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
-
- 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 of a single cell or a single battery
- H01M50/183—Sealing members
-
- 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
- H01M50/30—Arrangements for facilitating escape of gases
-
- 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
- H01M50/531—Electrode connections inside a battery casing
-
- 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)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The present invention discloses a battery current collector. A connection part includes a stress buffering part disposed on an outer side and an annular main body disposed on an inner side. A plurality of support parts extending toward a cathode bottom cover are integrally formed on the annular main body through injection molding. The support parts are radially distributed between an inner side of the stress buffer part and a central post. An upper part of the support part is provided with a protruding structure that faces and abuts the cathode bottom cover. The battery current collector has the advantages that, in addition to a sealing ring, a current collector support mechanism is integrally formed through injection molding, so that the material cost is lowered, an inlaying process is simplified, and a process flow is simplified; the plastic molded sealing ring is fitted with the cathode bottom cover, so that the requirement on concentricity of all parts is low, the production and management costs are lowered, the overall mass of the battery is reduced, and the transport cost is lowered accordingly. Auxiliary support pieces are saved, so that the thickness of the whole collector is reduced, an internal space of the battery is increased, active substances are increased, and electrical performance of the battery is enhanced.
Description
Technical field
The present invention relates to a kind of cell sealing and blast resistance construction, especially relate to a kind of battery current collector.
Background technology
Collector body is the important feature in battery, especially the security performance of battery is played guarantee effect.It primarily serves the purpose of:
1, relief valve effect, prevents inside battery gas pressure too high and explodes；2, sealing function, will battery container
The closure of openings of bottom；3, afflux effect, the electric current collected and produce to outside conveying inside battery negative pole.
Such as China's mandate patent of invention disclosure that date of publication is on April 3rd, 2013, Patent No. 201210562378.1
" a kind of battery current collector ", follows closely including sealing ring, cathode bottom cover and conductor, and sealing ring includes in plug-in mounting conductor nail
The peripheral part that stem body and battery case inwall fit tightly and the connecting portion between center column and peripheral part, lead
The bottom of body nail is electrically connected to cathode bottom cover regularly, and cathode bottom cover is provided with bleeder port, and connecting portion includes circumferential body,
Being provided with blast resistance construction in circumferential body, blast resistance construction is arranged on circumferential body and center column junction root, its feature
It is provided with auxiliary support chip in being the space that sealing ring and cathode bottom cover surround, auxiliary support chip is provided with towards and pushes up
Live the projective structure of circumferential body, make circumferential body, center column and auxiliary support chip three surround a disappointing chamber, position
Being provided with, on auxiliary support chip inside projective structure, the venthole connected with chamber of losing heart, venthole is connected with bleeder port
Logical.Its advantage is the rigidity strengthening battery current collector, reduces the deformation degree of freedom of sealing ring, prevents the mistake because of sealing ring
Degree deformation causes explosion-proof ditch shape and the distortion of explosion-proof pressure.Above-mentioned battery current collector has a disadvantage in that 1, necessarily thick
The auxiliary support chip of degree so that the volume of collector body increases, and under conditions of battery overall volume is constant, decreases battery
Inner space, active substance reduces, unfavorable to battery electrical property.2, increase auxiliary support chip, increase by one dummy slider work
Sequence, process complexity increases, and raw material and production management's cost increase.3, auxiliary support chip is made up of metal material, single
Individual battery weight increases, and cost of transportation increases.4, to auxiliary support chip, cathode bottom cover and the raw material of sealing ring three
High with production process concentricity requirement, otherwise it is easily caused sealing ring and is assisted support chip incised wound or seal bad.
Summary of the invention
The technical problem to be solved is to provide a kind of on the basis of saving auxiliary support chip, still can reduce close
The deformation degree of freedom of seal, has the battery current collector of good leak-proof anti-explosive performance.
The present invention solves the technical scheme that above-mentioned technical problem used: battery colelctor electrode, including at the bottom of sealing ring, negative pole
Lid and conductor are followed closely, and sealing ring includes the periphery that the center column that plug-in mounting conductor is followed closely fits tightly with battery case inwall
Portion and the connecting portion between center column and peripheral part, blast resistance construction is arranged on connecting portion and is connected with center column
Place's root, it is characterised in that described connecting portion includes the stress buffer portion being positioned at outside and is positioned at the annular main of inner side
Body, in described circumferential body, integrated injection molding has multiple supporting part extended towards cathode bottom cover, and described props up
Support part radial distribution between the inner side and center column in stress buffer portion, and the top of this supporting part be provided with towards
And withstand the bulge-structure of cathode bottom cover.
The further preferred version of the present invention is: described stress buffer portion by connecting portion periphery to cathode bottom cover bending
Formed, outside connecting portion, form an annular protrusion and form a ring-shaped depression accordingly in the inner side of connecting portion,
In groove between cathode bottom cover embedment stress buffer part and peripheral part.
The further preferred version of the present invention is: described supporting part radial distribution is inside the annular protrusion in stress buffer portion
And between center column.
The further preferred version of the present invention is: in the ring-shaped depression described in the insertion of end of described battery separator paper, institute
The locating ring for positioning diaphragm paper towards inside battery it is provided with in the circumferential body stated.
The further preferred version of the present invention is: the inner of described center column is provided with first step.
The further preferred version of the present invention is: be provided with second between upper plane and all sidepieces of described cathode bottom cover
Rank, peripheral part is provided with venthole.
Compared with prior art, it is an advantage of the invention that integrated injection molding has collector body to support machine on the basis of sealing ring
Structure, reduces material cost, reduces dummy slider operation, simplification of flowsheet, and the sealing ring of plastic shaping coordinates with cathode bottom cover,
Relatively low to the concentricity requirement of each part, thus reduce production and management cost, and the total quality of battery is lighter, fortune
Defeated cost decreases.Owing to eliminating auxiliary support chip, the thickness of whole collector body reduces, and inside battery space increases,
Active substance increases, and strengthens the electrical property of battery.
Accompanying drawing explanation
Fig. 1 is the structure chart that invention is installed in battery；
Fig. 2 is the axonometric chart of the collector body of the present invention；
Fig. 3 is the top view of the collector body of the present invention；
Fig. 4 is the B-B sectional view of Fig. 3；
Fig. 5 is the F-F sectional view of Fig. 3；
Fig. 6 is the axonometric chart of the sealing ring of the present invention；
Fig. 7 is the top view of the sealing ring of the present invention；
Fig. 8 is the C-C sectional view of Fig. 7；
Fig. 9 is the E-E sectional view of Fig. 7.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
Battery colelctor electrode, follows closely 3 including sealing ring 1, cathode bottom cover 2 and conductor, and sealing ring 1 includes plug-in mounting conductor nail 3
Peripheral part 7 that center column 5 and battery case 6 inwall fit tightly and between center column 5 and peripheral part 7
Connecting portion 8, blast resistance construction 9 is arranged on connecting portion 8 and center column 5 junction root, and connecting portion 8 includes being positioned at
The stress buffer portion 10 in outside and the circumferential body 11 being positioned at inner side, in circumferential body 11, integrated injection molding has multiple court
The supporting part 12 extended to cathode bottom cover 2, supporting part 12 radial distribution is in the inner side in stress buffer portion 10 and center column
Between 5, and the top of this supporting part 12 is provided with towards and withstands the bulge-structure 13 of cathode bottom cover 2.Circumferential body
Center column 5 and the cathode bottom cover 2 11, with centre bore 51 form a disappointing chamber 20, this disappointing chamber 20 and negative pole
The venthole 21 of bottom 2 connects.
In the range of supporting part 12 thickness is arranged on suitably, can according to circumstances arrange 3-6, between two supporting parts 12
For disappointing chamber 20, between two supporting parts, it is provided with blast resistance construction 9.Center column 5 can be played bracing reinforcement by supporting part
Effect, increases the centre bore 51 active force to conductive nail, reduces centre bore 51 and climbs alkali phenomenon, say, that identical
Under the effect of support force, the thickness of center column 5 can be reduced, increase cell contents and amass, for the battery that discharge performance is high
Advantage is provided.
Stress buffer portion 10 is formed to cathode bottom cover 2 bending by connecting portion 8 periphery, forms one outside connecting portion 8
Individual annular protrusion 14 and accordingly the inner side of connecting portion 8 formed a ring-shaped depression 15, cathode bottom cover 2 embed should
In groove 16 between power buffer part 10 and peripheral part 7.In collector body assembling process, conductive nail 3 is inserted into
In the centre bore 51 of center column 5, cathode bottom cover 2 is embedded in groove 16, and mass action power is downward, annular
Main body 11 receives small longitudinal stress, the increase of supporting part 12, strengthens the integral rigidity of sealing ring 1, reduces
Connecting portion 8 length travel, stress filtration, blast resistance construction 9 is protected.
During battery seal, anode steel shell, collector body shrink to internal diameter, and stress buffer portion 10 absorbs greatly
After partial action power, micro force is transferred to circumferential body 11, because of the increase of supporting part 12, circumferential body 11
Effective thickness increases, and each point stress reduces, and supporting part 12, center column 5, the common group in stress buffer portion 10
The H type structure become makes integral rigidity strengthen, and supporting part undertakes more stress transfer, circumferential body 11 plane stress
Significantly weaken, make blast resistance construction 9 be protected, it is to avoid answer mechanical force excessive causing to rupture.
Increase or under heat condition at inner pressure of battery, owing to supporting part 12 withstands inside cathode bottom cover 2, seal ring
Shape main body 11 linear deformation degree of freedom is little, and the enhancing of rigidity also makes sealing ring entirety be unlikely to deform.Prevent explosion-proof layer
Impaired, shape and the distortion of explosion-proof pressure, even explosion-proof layer rupture.
Supporting part 12 radial distribution is inside the annular protrusion 14 in stress buffer portion 10 and between center column 5.
The end of battery separator paper 17 is inserted in ring-shaped depression 15, and circumferential body 11 is provided with the use towards inside battery
Locating ring 18 in location diaphragm paper 17.The effect of locating ring 18 is to prevent diaphragm paper from removing ring-shaped depression 15, rises
Effect to location.
The inner of center column 5 is provided with first step 19.Dispersible conductive nail and insert the stress of center column, prevent out
Splitting, change injection molding material and flow through, improve center column bubble phenomenon, be greatly improved work to the consistency of integral molded plastic
With, it is ensured that the centre bore active force to fastener.
It is provided with second step 24 between upper plane 22 and all sidepieces 23 of cathode bottom cover 2, all sidepieces 23 are provided with out
Pore 21.The setting of second step 24 not only increases cathode bottom cover 2 rigidity and avoids venthole 21 periphery because being stamped and formed out
Burr higher than the upper plane 22 of cathode bottom cover, prevent the loose contact of battery and electrical appliance.
Claims (6)
1. battery colelctor electrode, follows closely including sealing ring, cathode bottom cover and conductor, sealing ring include center column that plug-in mounting conductor follows closely,
And the peripheral part that battery case inwall fits tightly and the connecting portion between center column and peripheral part, explosion-proof knot
Structure is arranged on connecting portion and center column junction root, it is characterised in that described connecting portion includes being positioned at outside
Stress buffer portion and the circumferential body being positioned at inner side, in described circumferential body, integrated injection molding has multiple towards negative
The supporting part that pole bottom extends, described supporting part radial distribution between the inner side and center column in stress buffer portion,
And the top of this supporting part is provided with towards and withstands the bulge-structure of cathode bottom cover.
Battery current collector the most according to claim 1, it is characterised in that described stress buffer portion is by connecting portion outer part
Divide and formed to cathode bottom cover bending, outside connecting portion, form an annular protrusion and accordingly in the inner side of connecting portion
Form a ring-shaped depression, in the groove between cathode bottom cover embedment stress buffer part and peripheral part.
Battery current collector the most according to claim 2, it is characterised in that described supporting part radial distribution is in stress buffer
Inside the annular protrusion in portion and between center column.
Battery current collector the most according to claim 2, it is characterised in that the end of described battery separator paper is inserted described
Ring-shaped depression in, described circumferential body is provided with the locating ring for positioning diaphragm paper towards inside battery.
Battery current collector the most according to claim 1, it is characterised in that the inner of described center column is provided with first
Step.
Battery current collector the most according to claim 1, it is characterised in that the upper plane of described cathode bottom cover and week sidepiece
Between be provided with second step, peripheral part is provided with venthole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610505299.5A CN105958078B (en) | 2016-06-27 | 2016-06-27 | Battery current collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610505299.5A CN105958078B (en) | 2016-06-27 | 2016-06-27 | Battery current collector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105958078A true CN105958078A (en) | 2016-09-21 |
| CN105958078B CN105958078B (en) | 2018-07-17 |
Family
ID=56902010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610505299.5A Active CN105958078B (en) | 2016-06-27 | 2016-06-27 | Battery current collector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105958078B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108550778A (en) * | 2018-05-29 | 2018-09-18 | 天津锦泰勤业精密电子有限公司 | Power battery plate, cover plate of power battery component, power battery |
| CN110265590A (en) * | 2019-06-28 | 2019-09-20 | 宁波光华电池有限公司 | Battery sealing ring |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4717634A (en) * | 1985-10-17 | 1988-01-05 | Bridgestone Corporation | Electric cells utilizing polyaniline as a positive electrode active material |
| JP2003217532A (en) * | 2002-01-21 | 2003-07-31 | Fdk Corp | Sealing gasket for alkaline battery |
| CN200986940Y (en) * | 2006-12-05 | 2007-12-05 | 宁波博大梧桐电池科技有限公司 | Battery cathode current collector |
| CN101662004A (en) * | 2008-08-26 | 2010-03-03 | 比亚迪股份有限公司 | Battery cover board assembly, battery and battery pack, and manufacture method thereof |
| CN102714286A (en) * | 2010-02-22 | 2012-10-03 | Fdk能源株式会社 | Cylindrical battery and gasket for use in same |
| CN103022504A (en) * | 2012-12-21 | 2013-04-03 | 中银（宁波）电池有限公司 | Current collector for battery |
| CN202977598U (en) * | 2012-11-15 | 2013-06-05 | 中银（宁波）电池有限公司 | Battery current collector |
| CN204144340U (en) * | 2014-09-29 | 2015-02-04 | 惠州比亚迪实业有限公司 | Electrode terminal, the battery cover board assembly with it, battery and battery pack |
| JP2015225743A (en) * | 2014-05-27 | 2015-12-14 | Ｆｄｋエナジー株式会社 | Sealing gasket for alkaline battery and alkaline battery |
| CN205752385U (en) * | 2016-06-27 | 2016-11-30 | 中银（宁波）电池有限公司 | Battery current collector |
-
2016
- 2016-06-27 CN CN201610505299.5A patent/CN105958078B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4717634A (en) * | 1985-10-17 | 1988-01-05 | Bridgestone Corporation | Electric cells utilizing polyaniline as a positive electrode active material |
| JP2003217532A (en) * | 2002-01-21 | 2003-07-31 | Fdk Corp | Sealing gasket for alkaline battery |
| CN200986940Y (en) * | 2006-12-05 | 2007-12-05 | 宁波博大梧桐电池科技有限公司 | Battery cathode current collector |
| CN101662004A (en) * | 2008-08-26 | 2010-03-03 | 比亚迪股份有限公司 | Battery cover board assembly, battery and battery pack, and manufacture method thereof |
| CN102714286A (en) * | 2010-02-22 | 2012-10-03 | Fdk能源株式会社 | Cylindrical battery and gasket for use in same |
| CN202977598U (en) * | 2012-11-15 | 2013-06-05 | 中银（宁波）电池有限公司 | Battery current collector |
| CN103022504A (en) * | 2012-12-21 | 2013-04-03 | 中银（宁波）电池有限公司 | Current collector for battery |
| JP2015225743A (en) * | 2014-05-27 | 2015-12-14 | Ｆｄｋエナジー株式会社 | Sealing gasket for alkaline battery and alkaline battery |
| CN204144340U (en) * | 2014-09-29 | 2015-02-04 | 惠州比亚迪实业有限公司 | Electrode terminal, the battery cover board assembly with it, battery and battery pack |
| CN205752385U (en) * | 2016-06-27 | 2016-11-30 | 中银（宁波）电池有限公司 | Battery current collector |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108550778A (en) * | 2018-05-29 | 2018-09-18 | 天津锦泰勤业精密电子有限公司 | Power battery plate, cover plate of power battery component, power battery |
| CN110265590A (en) * | 2019-06-28 | 2019-09-20 | 宁波光华电池有限公司 | Battery sealing ring |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105958078B (en) | 2018-07-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20230335868A1 (en) | Circular lithium battery and method for producing the same | |
| EP4156386A1 (en) | Button cell and electronic device | |
| CN105958078A (en) | Battery current collector | |
| CN213905545U (en) | Circular lithium battery | |
| CN205752385U (en) | Battery current collector | |
| CN111969253A (en) | Electricity core centre bore contact pin subassembly | |
| CN203931776U (en) | Petrol engine inductance ignition coil | |
| CN109935458B (en) | Ignition coil for an internal combustion engine | |
| CN112151737B (en) | Button type lithium ion battery, preparation method thereof and shell | |
| CN212011175U (en) | Electricity core centre bore contact pin subassembly | |
| CN212848609U (en) | Top cover structure and power battery | |
| KR101850182B1 (en) | Cap Assembly Of Cylindrical Type Secondary Battery And Manufacturing Method Thereof | |
| CN103022504B (en) | Current collector for battery | |
| US11955600B2 (en) | Solid-state battery | |
| CN205984660U (en) | Novel bolt manner aluminium electrolytic capacitor encapsulation | |
| CN202395053U (en) | Combined cap for cylindrical lithium ion battery | |
| CN203134896U (en) | Battery current collector | |
| CN211150608U (en) | Alkali-manganese cell sealing ring | |
| CN202695572U (en) | Sealing ring and nickel-hydrogen battery using same | |
| CN203374899U (en) | One-way valve | |
| CN203406364U (en) | Welding structure of lead-acid storage battery terminal | |
| CN204118148U (en) | Explosion-proof zinc-manganese battery | |
| CN211428198U (en) | Novel small column type micro battery and shell thereof | |
| CN219917535U (en) | High-capacity cylindrical secondary battery | |
| CN203674284U (en) | Rechargeable battery and cover body assembly thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |