CN104241558A - Cover-cap for cylindrical battery and cylindrical battery - Google Patents
Cover-cap for cylindrical battery and cylindrical battery Download PDFInfo
- Publication number
- CN104241558A CN104241558A CN201410485861.3A CN201410485861A CN104241558A CN 104241558 A CN104241558 A CN 104241558A CN 201410485861 A CN201410485861 A CN 201410485861A CN 104241558 A CN104241558 A CN 104241558A
- Authority
- CN
- China
- Prior art keywords
- lower cover
- cylindrical battery
- battery
- injection hole
- cap
- 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.)
- Pending
Links
- 238000002347 injection Methods 0.000 claims abstract description 33
- 239000007924 injection Substances 0.000 claims abstract description 33
- 239000003792 electrolyte Substances 0.000 claims abstract description 21
- 239000007788 liquid Substances 0.000 claims description 20
- 230000004308 accommodation Effects 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 239000013536 elastomeric material Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 238000004880 explosion Methods 0.000 abstract description 4
- 239000013589 supplement Substances 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 206010011906 Death Diseases 0.000 description 1
- 229910018095 Ni-MH Inorganic materials 0.000 description 1
- 229910018477 Ni—MH Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000002224 dissection Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- 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
- H01M50/148—Lids or covers characterised by their shape
- H01M50/152—Lids or covers characterised by their shape for cells having curved cross-section, e.g. round or elliptic
-
- 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
- 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
- H01M50/691—Arrangements or processes for draining liquids from casings; Cleaning battery or cell casings
-
- 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)
- Filling, Topping-Up Batteries (AREA)
Abstract
The invention provides a cover-cap for a cylindrical battery, which comprises an upper cap, a lower cover and an anti-explosion ball, wherein the upper cap and the lower cover are tightly combined together, at least one exhaust vent is formed in a side edge of the upper cap, an anti-explosion hole is formed in the center of the lower cover, an accommodating space is formed between the upper cap and the lower cover, the anti-explosion ball is arranged in the accommodating space, at least one electrolyte injection hole is formed in a side edge of the lower cover, and the electrolyte injection hole is tightly matched with an electrolyte injection valve to be sealed. The invention further provides the cylindrical battery using the cover-cap. The cover-cap provided by the invention has the advantages that an electrolyte can be added according to the situation through the electrolyte injection hole in the lower cover of the cover-cap, the battery electrolyte injection defect rate is lowered and the scrappage is reduced; after the battery is used after a period of time, the electrolyte injection valve on the electrolyte injection hole is opened for an electrolyte supplement, the internal voltage of the battery is lowered, and the service life of the battery is prolonged.
Description
Technical field
The present invention relates to a kind of cylindrical battery block and cylindrical battery.
Background technology
In process of production; because of the phenomenon that equipment instability often there will be many fluid injections, few fluid injection does not even have fluid injection; particularly high-capacity battery, this situation occurs increasing scrapping or defective products ratio in production process, improves the manufacturing cost of production to a certain extent.In addition, Ni-MH battery is all lean solution Design of State when design, find that most of battery occurs that end-of-life is not because anode through a large amount of dissection and analysis data, negative pole or membrane properties lost efficacy, but inside battery partial electrolyte liquid and positive pole, generate gas in negative pole or barrier film generation oxidation reaction or cyclic process to have been discharged by explosionproof hole, the electrolyte of inside battery is made less to cause the internal resistance of cell very large, battery charging is not entered, dissect and find that pole group is dry especially, respectively to positive pole, negative pole carries out opening and tests its capacity, result is normal.Experiment finds, open after an osculum injects electrolyte this type of battery and seal, detect and find that the internal resistance of cell declines at once, battery capacity significantly promotes, and can also carry out a period of time charge and discharge cycles.Therefore, need to find a kind of can filling at any time again when not destroying battery or the parts of supplementary electrolyte.
Summary of the invention
The present invention aim to provide a kind of can annotate at any time or supplementary electrolyte cylindrical battery block and cylindrical battery.
The present invention is realized by following scheme:
A kind of cylindrical battery block, comprise cap, lower cover, explosion-proof ball, upper cap and lower cover are closely linked, the side of upper cap is provided with at least one steam vent, the center of lower cover has an explosionproof hole, and form a spatial accommodation between upper cap and lower cover, explosion-proof ball is placed in spatial accommodation, the side of described lower cover is provided with at least one liquid injection hole, and described liquid injection hole uses liquid-filling valve tight supporting closed.
Generally, the one in described liquid injection hole circular in cross-section, ellipse, triangle, rectangle.
During described liquid injection hole circular in cross-section, it is tight supporting closed that described liquid injection hole and described liquid-filling valve pass through spiral way.
For improving battery safety, described liquid-filling valve uses plastics or elastomeric material to make.Use the liquid-filling valve that this material makes, when battery short circuit is in HTHP, liquid-filling valve can melt, the gas of inside battery can be discharged by liquid injection hole, reduce cell internal pressure, avoid battery to cause the security incidents such as battery explosion because internal pressure is excessive, improve battery security.
A kind of cylindrical battery, places battery core, injects electrolyte in housing, block sealing, and described block adopts above-mentioned cylindrical battery block.When battery makes, according to concrete production technology, fluid injection or the rear fluid injection of sealing before sealing can be selected.
Cylindrical battery block of the present invention, arranges liquid injection hole by covering under block, and liquid injection hole is tight supporting closed by liquid-filling valve, facilitates battery annotate or supplement electrolyte.Use the cylindrical battery that this block makes, in process of production, when finding the few fluid injection of battery or non-fluid injection, only liquid-filling valve need be opened, annotated by liquid injection hole or supplement electrolyte, so just can reduce scrapping and bad ratio of battery in production process.Certainly, if find the many fluid injections of battery, also by liquid injection hole, unnecessary electric liquid is sucked out.In battery use procedure, when slump of disastrous proportions appears in battery capacity, liquid-filling valve can be opened and reduce cell internal pressure, supplement electrolyte simultaneously, then use small area analysis charge and discharge to activate to battery, can useful life of proper extension battery.
Accompanying drawing explanation
Fig. 1: the generalized section of cylindrical battery block (not comprising liquid-filling valve) in embodiment 1
Fig. 2: the generalized section of cylindrical battery block in embodiment 1
Fig. 3: the partial enlarged drawing of liquid-filling valve in embodiment 1
Embodiment
Below in conjunction with embodiment, the invention will be further described, but the present invention is not limited to the statement of embodiment.
embodiment 1
A kind of cylindrical battery block, as shown in Figure 1 and Figure 2, comprise cap 1, lower cover 2, explosion-proof ball 3, upper cap 1 and lower cover 2 are closely linked, the side of upper cap 1 is provided with a steam vent 4, the center of lower cover has an explosionproof hole 5, a spatial accommodation 6 is formed between upper cap 1 and lower cover 2, explosion-proof ball 3 is placed in spatial accommodation 6, the liquid injection hole 7 of a circular in cross-section is provided with at the side of lower cover 2, liquid injection hole 7 is tight supporting closed by spiral way with liquid-filling valve 8, and the partial enlarged drawing of liquid-filling valve 8 as shown in Figure 3.
embodiment 2
A cylindrical battery block, the cylindrical battery of its structure and embodiment 1 is blocked a shot similar, and its difference is: the side of upper cap is symmetrically arranged with two steam vents, and the side of lower cover is symmetrically arranged with the liquid injection hole of two circular in cross-section.
embodiment 3
A kind of cylindrical battery, places battery core, injects electrolyte in housing, block sealing, and block adopts the cylindrical battery block in embodiment 1.
Claims (5)
1. a cylindrical battery block, comprise cap, lower cover, explosion-proof ball, upper cap and lower cover are closely linked, the side of upper cap is provided with at least one steam vent, the center of lower cover has an explosionproof hole, and form a spatial accommodation between upper cap and lower cover, explosion-proof ball is placed in spatial accommodation, it is characterized in that: the side of described lower cover is provided with at least one liquid injection hole, described liquid injection hole uses liquid-filling valve tight supporting closed.
2. a kind of cylindrical battery block as claimed in claim 1, is characterized in that: the one in described liquid injection hole circular in cross-section, ellipse, triangle, rectangle.
3. a kind of cylindrical battery block as claimed in claim 2, is characterized in that: during described liquid injection hole circular in cross-section, and it is tight supporting closed that described liquid injection hole and described liquid-filling valve pass through spiral way.
4. a kind of cylindrical battery block as described in as arbitrary in claims 1 to 3, is characterized in that: described liquid-filling valve uses plastics or elastomeric material to make.
5. a cylindrical battery, comprises housing, battery core, electrolyte, block, places battery core, injects electrolyte in housing, and block sealing, is characterized in that: a kind of cylindrical battery block as described in described block employing is as arbitrary in Claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410485861.3A CN104241558A (en) | 2014-09-22 | 2014-09-22 | Cover-cap for cylindrical battery and cylindrical battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410485861.3A CN104241558A (en) | 2014-09-22 | 2014-09-22 | Cover-cap for cylindrical battery and cylindrical battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104241558A true CN104241558A (en) | 2014-12-24 |
Family
ID=52229258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410485861.3A Pending CN104241558A (en) | 2014-09-22 | 2014-09-22 | Cover-cap for cylindrical battery and cylindrical battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104241558A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106410079A (en) * | 2016-09-12 | 2017-02-15 | 国轩新能源（苏州）有限公司 | Cylindrical lithium-ion power battery aluminum shell with high safety and high performance |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201508861U (en) * | 2009-07-22 | 2010-06-16 | 比亚迪股份有限公司 | Battery cover assembly and cylindrical lithium-ion battery using same |
| CN102035020A (en) * | 2010-11-23 | 2011-04-27 | 天津力神电池股份有限公司 | Novel lager-capacity lithium ion battery |
| CN102064293A (en) * | 2010-12-31 | 2011-05-18 | 无锡富洪科技有限公司 | Cover plate structure of battery |
| CN202178303U (en) * | 2011-08-18 | 2012-03-28 | 江门三捷电池实业有限公司 | Anti-explosion battery cap |
-
2014
- 2014-09-22 CN CN201410485861.3A patent/CN104241558A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201508861U (en) * | 2009-07-22 | 2010-06-16 | 比亚迪股份有限公司 | Battery cover assembly and cylindrical lithium-ion battery using same |
| CN102035020A (en) * | 2010-11-23 | 2011-04-27 | 天津力神电池股份有限公司 | Novel lager-capacity lithium ion battery |
| CN102064293A (en) * | 2010-12-31 | 2011-05-18 | 无锡富洪科技有限公司 | Cover plate structure of battery |
| CN202178303U (en) * | 2011-08-18 | 2012-03-28 | 江门三捷电池实业有限公司 | Anti-explosion battery cap |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106410079A (en) * | 2016-09-12 | 2017-02-15 | 国轩新能源（苏州）有限公司 | Cylindrical lithium-ion power battery aluminum shell with high safety and high performance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141224 |