CN108422089A - A kind of button cell processing method of casing improving afflux performance - Google Patents
A kind of button cell processing method of casing improving afflux performance Download PDFInfo
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- CN108422089A CN108422089A CN201810089773.XA CN201810089773A CN108422089A CN 108422089 A CN108422089 A CN 108422089A CN 201810089773 A CN201810089773 A CN 201810089773A CN 108422089 A CN108422089 A CN 108422089A
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- button cell
- processing method
- shell
- cell shell
- afflux
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Abstract
The invention discloses a kind of button cell processing method of casing improving afflux performance, include the following steps：1) button cell shell chamber resettling is placed in workbench upward, confirms the inner cavity surface modified region of button cell shell；2) it uses the modified region in laser button type battery case to be scanned, is allowed to form the button cell shell of surface modification, the button cell shell that surface is modified has afflux performance.Process of the present invention is simple, without using additional conducting resinl and gumming device, the laser equipment performed etching only with existing button type battery case shell, chamber resettling's inner surface of button type battery case carries out laser scanning, so that the surface of button cell shell is modified, the button cell shell with certain afflux performance is formed；Afflux performance can be improved in the button cell shell of preparation after being contacted with anode, afflux performance is suitable with the afflux performance after bonding conducting resinl.
Description
Technical field
The invention belongs to button cell field, specifically a kind of button cell processing method of casing for improving afflux performance.
Background technology
Conventional button cell includes anode cover, negative electrode casing, and anode, cathode, diaphragm, plus plate current-collecting body and cathode collection
Fluid, wherein plus plate current-collecting body are generally arranged between anode and anode cover.
In order to increase the afflux performance of plus plate current-collecting body, plus plate current-collecting body or anode are usually made into specific shape, such as
Netted supporter disclosed in Chinese patent application No. is 201710315552.5, provides " plus plate current-collecting body, anode
Cake, button cell and plus plate current-collecting body processing method ", for another example U disclosed in the Chinese patent application No. is 201620403110.7
The support chip and positive plate of type or arc, to which when button cell discharges, the effective deformation for compensating anode cover ensures anode
The good flow conductivity between anode cover, however these methods be required to by the shape of plus plate current-collecting body and overall construction do compared with
Big change, complex procedures, while increasing the height of button cell, it is not suitable for ultra-thin button cell.
Also some will be bonded together between anode and anode cover using conducting resinl, to increase effective contact of this part of the two
Area and continuous contact time, however need additional glue using conductive gluing knot, lead the instrument and equipments such as glue, viscose glue, it manufactures
It is of high cost, " button cell and its anode cover ", anode cover as disclosed in the Chinese patent application No. is 200920218670.5
Inner surface be coated with one layer of electrically conductive graphite layer, while in electrically conductive graphite increase binder so that conductive material it is close,
It is covered in the shell bottom inner surface of anode cover securely, anode cover at this time can be used as plus plate current-collecting body, after sealing molding in battery
Relatively low, discharge capacity higher is hindered, but the granularity of its graphite must be finely controlled and be selected, the proportioning of graphite and binder is also necessary
Selection can not just influence electric conductivity with caution；In addition, using conductive adhesive positive plate and anode cover, automatic double surface gluer is needed；It must
The equipment of colloid and pipeline accumulation and solidification cause equipment plastic emitting difficult in the loading of palpus solution conducting resinl and transmission process, very
To the problems such as blocking gum outlet, battery production is influenced in this way, there are maintenance cost height.
Invention content
The object of the present invention is to provide a kind of button cell processing method of casing improving afflux performance, processing method is simple
Effectively, the afflux performance of the button cell of conventional structure can be made suitable with the afflux performance of button cell for being bonded with conducting resinl.
To achieve the above object, the technical solution adopted by the present invention is：A kind of button cell shell improving afflux performance
Processing method includes the following steps：
1) button cell shell chamber resettling is placed in workbench upward, confirms that the inner cavity surface of button cell shell modifies area
Domain；
2) it uses the modified region in laser button type battery case to be scanned, is allowed to form the button electricity of surface modification
Pond shell, the button cell shell that surface is modified have afflux performance.
The present invention 1) without using additional conducting resinl and gumming device, only with existing button type battery case outside
Chamber resettling's inner surface of the laser equipment that shell performs etching, button type battery case carries out laser scanning, so that button cell
The surface of shell is modified, and forms the button cell shell with certain afflux performance；2) process is simple, is additionally set without increasing
It is standby；3) afflux performance, afflux performance and the collection after bonding conducting resinl can be improved in the button cell shell prepared after being contacted with anode
Fluidity can quite, initial internal resistance smaller.
Further, modified region is button cell shell and the positive inner surface being in contact in the step 1).
Further, laser is generated using laser marking machine in the step 2).
Another step, the power of laser is 5~30W in the step 2), and sweep time is 0.5~10s.
Preferably, the power of laser is 5~30W in the step 2), and sweep time is 5~8s.
Another step, plus plate current-collecting body of the button cell shell that surface is modified in the step 2) as button cell.
Further, the material of the button cell shell is selected from stainless steel or stainless iron.
Further, the modified region is round or rectangular.
The thickness on another step ground, the modified region is 0.5~5 μm.
Preferably, the thickness of the modified region is 1~5 μm.
Specific implementation mode
With reference to preferred embodiment, invention is further described in detail, convenient for more clearly understanding this
Invention, but the present invention is not limited to following specific implementation modes.
The present invention operation principle be：Contact resistance correlation between the charge carrier ability of button cell and each component
It is very big, it is however generally that, whether current channel between anode and button cell shell unimpeded be electric current can carry out efficiently transmitting and
Very the key link of anode collection, but the general internal resistance of anode is larger, when directly being contacted with button cell shell, between the two
Internal resistance it is larger.Solution is to increase effective contact area of anode and shell, and processing method using the present invention will detain
For the one side that formula battery case is contacted with anode using after laser scanning, the modified region of button cell shell inner surface generates a system
Row protrusion increases contact area, contacts well, reaches with anode in the case of button cell shell can be made not smear conducting resinl
Reduce the purpose of battery entirety internal resistance.
Experiment condition：
(1), processing object
Button cell shell
(2), laser
Instrument：Low power laser marking machine
Light source：Solid or gas laser
Light source power：5~30W
Wavelength：1064nm
Scanning form：Intensive Surface scan, the scanning of loose line or spot scan
Sweep speed：400mm/s 0.5~10s of sweep time
Embodiment 1
The button cell shell chamber resettling of stainless steel is placed in workbench upward, confirms the inner cavity surface of button cell shell
Modified region selects button cell shell with the border circular areas of the positive inner surface being in contact as modified region；Using laser
Marking machine generates laser, is scanned to modified region, and the power of laser is 5W, sweep time 5s, and modified region is etched
Thickness be 1 μm；Button cell shell after the completion of scanning is as plus plate current-collecting body.
Using button cell shell obtained above, it is applied in conventional button cell, positive electrode is mainly MnO2,
By resistance test and volume test, the performance of the button cell is reacted, the discharge capacity for obtaining the button cell is 105mAh,
Initial resistance is 20 Ω.
Embodiment 2
The button cell shell chamber resettling of stainless steel is placed in workbench upward, confirms the inner cavity surface of button cell shell
Modified region selects button cell shell with the border circular areas of the positive inner surface being in contact as modified region；Using laser
Marking machine generates laser, is scanned to modified region, and the power of laser is 10W, sweep time 8s, and modified region is etched
Thickness be 2 μm；Button cell shell after the completion of scanning is as plus plate current-collecting body.
Using button cell shell obtained above, it is applied in conventional button cell, positive electrode is mainly MnO2,
By resistance test and volume test, the performance of the button cell is reacted, the discharge capacity for obtaining the button cell is 110mAh,
Initial resistance is 15 Ω.
Embodiment 3
The button cell shell chamber resettling of stainless steel is placed in workbench upward, confirms the inner cavity surface of button cell shell
Modified region selects button cell shell with a part of square region of the positive inner surface being in contact as modified region；It adopts
Laser is generated with laser marking machine, modified region is scanned, the power of laser is 20W, sweep time 8s, modified region
The thickness being etched is 3 μm；Button cell shell after the completion of scanning is as plus plate current-collecting body.
Using button cell shell obtained above, it is applied in conventional button cell, positive electrode is mainly MnO2,
By resistance test and volume test, the performance of the button cell is reacted, the discharge capacity for obtaining the button cell is 115mAh,
Initial resistance is 8 Ω.
Embodiment 4
The button cell shell chamber resettling of stainless steel is placed in workbench upward, confirms the inner cavity surface of button cell shell
Modified region selects button cell shell with a part of square region of the positive inner surface being in contact as modified region；It adopts
Laser is generated with laser marking machine, modified region is scanned, the power of laser is 30W, sweep time 8s, modified region
The thickness being etched is 5 μm；Button cell shell after the completion of scanning is as plus plate current-collecting body.
Using button cell shell obtained above, it is applied in conventional button cell, positive electrode is mainly MnO2,
By resistance test and volume test, the performance of the button cell is reacted, the discharge capacity for obtaining the button cell is 115mAh,
Initial resistance is 7 Ω.
Embodiment 5
The button cell shell chamber resettling of stainless steel is placed in workbench upward, confirms the inner cavity surface of button cell shell
Modified region selects button cell shell with a part of border circular areas of the positive inner surface being in contact as modified region；It adopts
Laser is generated with laser marking machine, modified region is scanned, the power of laser is 30W, sweep time 0.5s, modifies area
The thickness that domain is etched is 0.5 μm；Button cell shell after the completion of scanning is as plus plate current-collecting body.
Using button cell shell obtained above, it is applied in conventional button cell, positive electrode is mainly MnO2,
By resistance test and volume test, the performance of the button cell is reacted, the discharge capacity for obtaining the button cell is 104mAh,
Initial resistance is 21 Ω.
Embodiment 6
The button cell shell chamber resettling of stainless steel is placed in workbench upward, confirms the inner cavity surface of button cell shell
Modified region selects button cell shell with a part of square region of the positive inner surface being in contact as modified region；It adopts
Laser is generated with laser marking machine, modified region is scanned, the power of laser is 5W, sweep time 10s, modified region
The thickness being etched is 1.5 μm；Button cell shell after the completion of scanning is as plus plate current-collecting body.
Using button cell shell obtained above, it is applied in conventional button cell, positive electrode is mainly MnO2,
By resistance test and volume test, the performance of the button cell is reacted, the discharge capacity for obtaining the button cell is 112mAh,
Initial resistance is 12 Ω.
Comparative example 1
Using the common button cell shell of the method laser scanning without the present invention, it is applied to conventional button cell
In, while will be bonded together using conducting resinl between button cell shell and anode, positive electrode is mainly MnO2, button electricity
Pond case material is stainless steel, and using test condition same as Example 1, the discharge capacity for measuring the button cell is
113mAh, initial resistance are 7 Ω.
Comparative example 2
Using the common button cell shell of the method laser scanning without the present invention, it is applied to conventional button cell
In, do not make collection stream process between anode and shell, positive electrode is mainly MnO2, button cell case material is stainless steel, is used
Test condition same as Example 1, the discharge capacity for measuring the button cell are 92mAh, and initial resistance is 35 Ω.
It is compared with the battery performance parameter of the button cell of comparative example 1 by above-described embodiment 1~6, can obtain and use this hair
Conductive capability made from the bright button cell processing method of casing for improving afflux performance between button cell shell and anode, with
The conductive capability between button cell shell and anode after the bonding conducting resinl of surface is not much different, and electric discharge between the two is held
Amount, resistance are suitable, show the afflux performance using the present invention that can really increase button cell surface of shell, conductive without bonding
Glue, save viscose glue tedious steps and operation and investment and operating cost；
Above-described embodiment 1~6 is compared with the battery performance parameter of the button cell of comparative example 2 again, can be obtained using this
Invention improves the conductive capability between button cell shell and anode made from the button cell processing method of casing of afflux performance,
Button cell shell is substantially better than not do any collection stream process and directly contact leading for the button cell after installation between anode
Electric energy power.
The structure and its manufacturing method of unspecified routine button cell are the common skill in this field in this specification
The prior art well known to art personnel is not unfolded to illustrate.
Above-described specific implementation mode is only schematical, and used technical term is limited in the present invention
Qualifier is only for convenience of description of the invention, and those skilled in the art are in a kind of button improving afflux performance of the present invention
Under the enlightenment of battery case processing method, without breaking away from the scope protected by the purposes and claims of the present invention, may be used also
Many forms are derived, these are within protection scope of the present invention.
Claims (10)
1. a kind of button cell processing method of casing improving afflux performance, it is characterised in that：Include the following steps：
1) button cell shell chamber resettling is placed in workbench upward, confirms the inner cavity surface modified region of button cell shell；
2) it uses the modified region in laser button type battery case to be scanned, is allowed to form the button cell shell of surface modification
Body, the button cell shell that surface is modified have afflux performance.
2. a kind of button cell processing method of casing improving afflux performance according to claim 1, it is characterised in that：Institute
It is the inner surface that button cell shell is in contact with anode to state modified region in step 1).
3. a kind of button cell processing method of casing improving afflux performance according to claim 1 or 2, feature exist
In：Laser is generated using laser marking machine in the step 2).
4. a kind of button cell processing method of casing improving afflux performance according to claim 3, it is characterised in that：Institute
The power for stating laser in step 2) is 5~30W, and sweep time is 0.5~10s.
5. a kind of button cell processing method of casing improving afflux performance according to claim 3, it is characterised in that：Institute
The power for stating laser in step 2) is 5~30W, and sweep time is 5~8s.
6. a kind of button cell processing method of casing of raising afflux performance according to claim 1,4 or 5, feature exist
In：Plus plate current-collecting body of the button cell shell that surface is modified in the step 2) as button cell.
7. a kind of button cell processing method of casing improving afflux performance according to claim 6, it is characterised in that：Institute
The material for stating button cell shell is selected from stainless steel or stainless iron.
8. a kind of button cell processing method of casing of raising afflux performance according to claim 1,2,4,5 or 7, special
Sign is：The modified region is round or rectangular.
9. a kind of button cell processing method of casing improving afflux performance according to claim 8, it is characterised in that：Institute
The thickness for stating modified region is 0.5~5 μm.
10. a kind of button cell processing method of casing improving afflux performance according to claim 8, it is characterised in that：
The thickness of the modified region is 1~5 μm.
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| CN201810089773.XA CN108422089A (en) | 2018-01-30 | 2018-01-30 | A kind of button cell processing method of casing improving afflux performance |
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| CN201810089773.XA CN108422089A (en) | 2018-01-30 | 2018-01-30 | A kind of button cell processing method of casing improving afflux performance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114113839A (en) * | 2021-11-16 | 2022-03-01 | 武汉昊诚锂电科技股份有限公司 | Method for evaluating current collecting capacity of lithium-ion battery current collecting structure |
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| US20050112469A1 (en) * | 2003-11-25 | 2005-05-26 | Ngk Spark Plug Co., Ltd. | Lithium cell and method for manufacturing the same |
| CN201590436U (en) * | 2009-10-14 | 2010-09-22 | 松柏(广东)电池工业有限公司 | Button cell and positive case thereof |
| CN106602067A (en) * | 2017-02-08 | 2017-04-26 | 深圳市贝特瑞新能源材料股份有限公司 | Graphite-based composite material and preparation method thereof and lithium ion battery comprising the composite material |
| CN106654289A (en) * | 2016-12-29 | 2017-05-10 | 深圳先进技术研究院 | Porous aluminum-foil cathode, preparation method of porous aluminum-foil cathode and lithium secondary battery |
| CN106848328A (en) * | 2017-04-06 | 2017-06-13 | 清华大学深圳研究生院 | A kind of negative current collector, GND, battery and preparation method thereof |
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2018
- 2018-01-30 CN CN201810089773.XA patent/CN108422089A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050112469A1 (en) * | 2003-11-25 | 2005-05-26 | Ngk Spark Plug Co., Ltd. | Lithium cell and method for manufacturing the same |
| CN201590436U (en) * | 2009-10-14 | 2010-09-22 | 松柏(广东)电池工业有限公司 | Button cell and positive case thereof |
| CN106654289A (en) * | 2016-12-29 | 2017-05-10 | 深圳先进技术研究院 | Porous aluminum-foil cathode, preparation method of porous aluminum-foil cathode and lithium secondary battery |
| CN106602067A (en) * | 2017-02-08 | 2017-04-26 | 深圳市贝特瑞新能源材料股份有限公司 | Graphite-based composite material and preparation method thereof and lithium ion battery comprising the composite material |
| CN106848328A (en) * | 2017-04-06 | 2017-06-13 | 清华大学深圳研究生院 | A kind of negative current collector, GND, battery and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114113839A (en) * | 2021-11-16 | 2022-03-01 | 武汉昊诚锂电科技股份有限公司 | Method for evaluating current collecting capacity of lithium-ion battery current collecting structure |
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Application publication date: 20180821 |
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