CN205752385U - Battery current collector - Google Patents
Battery current collector Download PDFInfo
- Publication number
- CN205752385U CN205752385U CN201620679313.9U CN201620679313U CN205752385U CN 205752385 U CN205752385 U CN 205752385U CN 201620679313 U CN201620679313 U CN 201620679313U CN 205752385 U CN205752385 U CN 205752385U
- Authority
- CN
- China
- Prior art keywords
- bottom cover
- battery
- cathode bottom
- center column
- connecting portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- 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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- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model discloses battery colelctor electrode, connecting portion includes the stress buffer portion being positioned at outside and is positioned at the circumferential body of inner side, in circumferential body, integrated injection molding has multiple supporting part extended towards cathode bottom cover, supporting part radial distribution is 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, its advantage is that integrated injection molding has collector body supporting mechanism on the basis of sealing ring, reduce material cost, reduce dummy slider operation, simplification of flowsheet, 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, cost of transportation decreases.Owing to eliminating auxiliary support chip, the thickness of whole collector body reduces, and inside battery space increases, and active substance increases, and strengthens the electrical property of battery.
Description
Technical field
This utility model relates to a kind of cell sealing and blast resistance construction, especially relates 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.Its Main Function
For: 1, relief valve effect, prevent inside battery gas pressure too high and explode；2, sealing function, will be at the bottom of battery container
The closure of openings of end；3, afflux effect, the electric current collected and produce to outside conveying inside battery negative pole.
Such as China's mandate utility model patent public affairs that date of publication is on April 3rd, 2013, Patent No. 201210562378.1
Having opened " a kind of battery current collector ", followed closely including sealing ring, cathode bottom cover and conductor, sealing ring includes the newel that plug-in mounting conductor is followed closely
The peripheral part that body and battery case inwall fit tightly and the connecting portion between center column and peripheral part, conductor nail
Bottom is electrically connected to cathode bottom cover regularly, and cathode bottom cover is provided with bleeder port, and connecting portion includes circumferential body, circumferential body
On be provided with blast resistance construction, blast resistance construction is arranged on circumferential body and center column junction root, it is characterised in that sealing ring
It is provided with auxiliary support chip in the space surrounded with cathode bottom cover, auxiliary support chip is provided with towards and withstands circumferential body
Projective structure, makes circumferential body, center column and auxiliary support chip three surround a disappointing chamber, is positioned at inside projective structure
Being provided with, on auxiliary support chip, the venthole connected with chamber of losing heart, venthole is connected with bleeder port.Its advantage is to strengthen electricity
The rigidity of pond collector body, reduce sealing ring deformation degree of freedom, prevent because of the excessive deformation of sealing ring cause explosion-proof ditch shape and
The distortion of explosion-proof pressure.Above-mentioned battery current collector has a disadvantage in that 1, certain thickness auxiliary support chip so that collector body
Volume increases, and under conditions of battery overall volume is constant, decreases inside battery space, and active substance reduces, to battery electricity
Performance is unfavorable.2, increasing auxiliary support chip, increase by one dummy slider operation, process complexity increases, raw material and production management's cost
Increase.3, auxiliary support chip is made up of metal material, and single battery weight increases, and cost of transportation increases.4, to auxiliary support chip,
Cathode bottom cover and the raw material of sealing ring three and production process concentricity requirement are high, are otherwise easily caused sealing ring and are assisted
Support chip hurts or seals bad.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of on the basis of saving auxiliary support chip, still can
Reduce the deformation degree of freedom of sealing ring, there is the battery current collector of good leak-proof anti-explosive performance.
The technical scheme that the above-mentioned technical problem of this utility model solution is used is: battery colelctor electrode, including sealing ring, bears
Pole bottom and conductor nail, sealing ring includes the peripheral part that the center column that plug-in mounting conductor is followed closely fits tightly with battery case inwall
And the connecting portion between center column and peripheral part, blast resistance construction is arranged on connecting portion and center column junction root,
It is characterized in that described connecting portion includes being positioned at the stress buffer portion in outside and is positioned at the circumferential body of inner side, described annular
In main body, integrated injection molding has multiple supporting part extended towards cathode bottom cover, and described supporting part radial distribution is delayed in stress
Rush between the inner side in portion and center column, and the top of this supporting part is provided with towards and withstands the bulge-structure of cathode bottom cover.
The further preferred version of this utility model is: described stress buffer portion by connecting portion periphery at the bottom of negative pole
Lid bending formed, outside connecting portion formed an annular protrusion and accordingly the inner side of connecting portion formed an annular recessed
Fall into, in the groove between cathode bottom cover embedment stress buffer part and peripheral part.
The further preferred version of this utility model is: described supporting part radial distribution is in the convex annular in stress buffer portion
Rise between inner side and center column.
The further preferred version of this utility model is: the ring-shaped depression described in the insertion of end of described battery separator paper
In, described circumferential body is provided with the locating ring for positioning diaphragm paper towards inside battery.
The further preferred version of this utility model is: the inner of described center column is provided with first step.
The further preferred version of this utility model is: be provided with between upper plane and all sidepieces of described cathode bottom cover
Second step, peripheral part is provided with venthole.
Compared with prior art, the utility model has the advantages that integrated injection molding has collector body on the basis of sealing ring
Supporting mechanism, reduces material cost, reduces dummy slider operation, and simplification of flowsheet, the sealing ring of plastic shaping is joined with cathode bottom cover
Close, 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, and lives
Property material increases, and strengthens the electrical property of battery.
Accompanying drawing explanation
Fig. 1 is the structure chart that utility model is installed in battery；
Fig. 2 is the axonometric chart of collector body of the present utility model；
Fig. 3 is the top view of collector body of the present utility model；
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 sealing ring of the present utility model；
Fig. 7 is the top view of sealing ring of the present utility model；
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, this utility model 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 in plug-in mounting conductor nail 3
The peripheral part 7 that stem body 5 and battery case 6 inwall fit tightly and the connecting portion between center column 5 and peripheral part 7
8, blast resistance construction 9 is arranged on connecting portion 8 and center column 5 junction root, and connecting portion 8 includes the stress buffer portion being positioned at outside
10 and be positioned at inner side circumferential body 11, in circumferential body 11 integrated injection molding have multiple towards cathode bottom cover 2 extend
Support part 12, supporting part 12 radial distribution is between the inner side and center column 5 in stress buffer portion 10, and the top of this supporting part 12
It is provided with towards and withstands the bulge-structure 13 of cathode bottom cover 2.Circumferential body 11, there is the center column 5 of centre bore 51 and negative
Pole bottom 2 forms a disappointing chamber 20, and this disappointing chamber 20 connects with the venthole 21 of cathode bottom cover 2.
In the range of supporting part 12 thickness is arranged on suitably, can according to circumstances arrange 3-6, between two supporting parts 12 be
Disappointing chamber 20, is provided with blast resistance construction 9 between two supporting parts.Center column 5 can be played bracing reinforcement effect by supporting part, increases
The Large central aperture 51 active force to conductive nail, reduces centre bore 51 and climbs alkali phenomenon, say, that in the effect of identical support force
Under, the thickness of center column 5 can be reduced, increase cell contents and amass, the battery high for discharge performance provides advantage.
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 embedment stress buffer part
In groove 16 between 10 and peripheral part 7.In collector body assembling process, conductive nail 3 is inserted into the centre bore 51 of center column 5
In, cathode bottom cover 2 is embedded in groove 16, and mass action power is downward, and circumferential body 11 receives small longitudinal stress, supporting part 12
Increase, strengthen the integral rigidity of sealing ring 1, reduce connecting portion 8 length travel, stress filtration, blast resistance construction 9 is protected
Protect.
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
Increasing, each point stress reduces, and the H type structure that supporting part 12, center column 5, stress buffer portion 10 collectively constitute makes whole
Body rigidity reinforced, supporting part undertakes more stress transfer, and circumferential body 11 plane stress weakens significantly, makes blast resistance construction 9 be subject to
Protection, 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, sealing ring annular
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
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, plays location
Effect.
The inner of center column 5 is provided with first step 19.Dispersible conductive nail and insert the stress of center column, prevent out
Split, change injection molding material and flow through, improve center column bubble phenomenon, the consistency effect of being greatly improved to integral molded plastic, 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 of the hair being stamped and formed out
Thorn is higher than the upper plane of cathode bottom cover.
Claims (6)
1. battery current collector, 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, blast resistance construction is arranged
At connecting portion and center column junction root, it is characterised in that stress buffer portion that described connecting portion includes being positioned at outside and
Being positioned at the circumferential body of inner side, in described circumferential body, integrated injection molding has multiple support extended towards cathode bottom cover
Portion, described supporting part radial distribution is between the inner side and center column in stress buffer portion, and the top of this supporting part is arranged
There is 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 form one accordingly in the inner side of connecting portion
Individual 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 annular described in the insertion of end of battery separator paper
In depression, 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 |
|---|---|---|---|
| CN201620679313.9U CN205752385U (en) | 2016-06-27 | 2016-06-27 | Battery current collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620679313.9U CN205752385U (en) | 2016-06-27 | 2016-06-27 | Battery current collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205752385U true CN205752385U (en) | 2016-11-30 |
Family
ID=57381172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620679313.9U Active CN205752385U (en) | 2016-06-27 | 2016-06-27 | Battery current collector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205752385U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105958078A (en) * | 2016-06-27 | 2016-09-21 | 中银（宁波）电池有限公司 | Battery current collector |
-
2016
- 2016-06-27 CN CN201620679313.9U patent/CN205752385U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105958078A (en) * | 2016-06-27 | 2016-09-21 | 中银（宁波）电池有限公司 | Battery current collector |
| CN105958078B (en) * | 2016-06-27 | 2018-07-17 | 中银（宁波）电池有限公司 | Battery current collector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |