CN101651210A - Preparation method of nickel metal hydride sealing square battery electrode - Google Patents
Preparation method of nickel metal hydride sealing square battery electrode Download PDFInfo
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- CN101651210A CN101651210A CN200910168565A CN200910168565A CN101651210A CN 101651210 A CN101651210 A CN 101651210A CN 200910168565 A CN200910168565 A CN 200910168565A CN 200910168565 A CN200910168565 A CN 200910168565A CN 101651210 A CN101651210 A CN 101651210A
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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
Abstract
The invention discloses a preparation method of a nickel metal hydride sealing square battery electrode. A foaming nickel base body without any filling material section on one end of an electrode plate (1) is clamped in the middle by a double-layer nickel plated steel band with regular shape or a double-layer nickel band, and the electrode plate and the foaming nickel base body are firmly welded together to form an electrode (3) by spot welding positioning and rolling welding. In the structure, the double-layer nickel plated steel band with regular shape or the double-layer nickel band is called as an integral electrode ear diversion strip (2); the foaming nickel base body filled with electrical chemical active substances for a battery is called as the electrode plate (1) after being dried, rolled and cut into a sheet with regular dimension, and the double-layer integral electrode ear diversion strip (2) clamping the foaming nickel base body without filling material section and weldingwith the foaming nickel base body is called as an electrode (3).
Description
Affiliated field
The present invention relates to a kind of preparation method of nickel metal hydride sealing square battery electrode.
Background technology
Nickel metal hydride sealing square battery is negative pole with the metal-hydride negative, and nickel oxide electrode is anodal, and potassium hydroxide solution is an electrolyte, electrode reaction such as following table:
Total cell reaction is: MH+NiOOH=====M+Ni (OH)
2
The reaction that discharges and recharges that this shows Ni-MH battery be unable to do without the transfer of electronics (e) between positive pole and negative current collector.
Generally, be the individual layer welding between pole plate and " the integrated lug drainage strip ", weldering easily produces not prison welding on the one hand by in the process, also can produce phenomenons such as roll banding in addition on the one hand, thereby solder yield is reduced.Firm degree between nickel foam and " integrated lug drainage strip " collector is low, resistance is big, and then the internal resistance of battery is increased, and causes the caloric value of battery battery in big electric current charge and discharge cycle process to increase, very easily cause battery leakage to climb alkali, cause lifetime.So must take effective measures the internal resistance that reduces battery.
Summary of the invention
At above defective, the invention provides a kind of electrode that can effectively improve and make solder yield, reduce the internal resistance of cell, and technology is simple, the electrode manufacturing technology that cost is low.
The object of the present invention is achieved like this: a kind of preparation method of nickel metal hydride sealing square battery electrode, one end of pole plate with the duplex nickel plating steel band of regular shape or double-deck nickel strap with the nickel foam substrate double team of non-filler section on the pole plate in the centre, earlier through the spot welding location, through roll welding it is welded together the formation electrode securely then, in this structure, nickel plated steel strip or nickel strap with regular shape is called " integrated lug drainage strip ", the nickel foam substrate that is filled with the used in battery electroactive substance is through oven dry, roll, the tablet that cuts into regular size is called " pole plate ", and double-deck " integrated lug drainage strip " clips " pole plate " and go up the nickel foam substrate of non-filler section and weld together and be called " electrode ".
The carrier material of manufacturing pole plate of the present invention is a nickel foam.Pole plate one end has the blank segment between 2mm～8mm, does not fill the used in battery electroactive substance, this blank segment be and the weld zone of " integrated lug drainage strip " between.The material of " integrated lug drainage strip " is nickel plated steel strip or nickel strap, and thickness in monolayer is between 0.05mm～0.2mm.Adopt double-deck " integrated lug drainage strip " with the blank nickel foam segment double team on " pole plate " in the centre, and the mode by welding welds together the formation electrode securely with it.
The preparation method of nickel metal hydride sealing square battery electrode of the present invention, concrete steps are as follows:
(1) pole plate is made
The positive and negative electrode of battery all adopts nickel foam substrate as carrier, and the used in battery active material slurry is filled in the nickel foam substrate, and is dry under set point of temperature, be rolled into respectively 0.3～0.8mm thick about, cut out pole plate to given size.Nickel foam substrate one end has the blank segment between 2mm～8mm, does not fill the used in battery electroactive substance.This blank segment be and the weld zone of " integrated lug drainage strip " between.
(2) " integrated lug drainage strip " made
Between 0.05mm～0.2mm, material is the light sheet of nickel plated steel strip or nickel strap with thickness in monolayer, and stamping-out becomes regular shape, " the integrated lug drainage strip " of given size.
(3) electrode is made
With " integrated lug drainage strip " with the nickel foam substrate double team of non-filler section on the pole plate in the centre, through the spot welding location, through roll welding it is welded together the formation electrode securely then earlier.
After adopting above technical scheme, the present invention has following beneficial effect:
(1) the prepared electrode of the present invention, the welding of electrode manufacturing process is firm, the qualification rate height.
(2) with the prepared electrode of the present invention, be assembled into nickel metal hydride sealing square battery, internal resistance obviously reduces (sealed cell measurement).
(3) with the prepared electrode of the present invention, be assembled into nickel metal hydride sealing square battery, big electric current charge and discharge process battery temperature obviously reduces, and discharge voltage plateau and charge and discharge cycles stability significantly improve.
(4) equipment and technology are simple.
Description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing.
Fig. 1 is a structural representation of the present invention.
Fig. 2 is a side view of the present invention.
Fig. 3 is 3C charge and discharge processes, battery temperature contrast situation.
Fig. 4 is for 1C fills 100%, 3C is discharged to 1.0V, cell voltage contrast situation.
Embodiment
According to Fig. 1, shown in Figure 2, a kind of preparation method of nickel metal hydride sealing square battery electrode, one end of pole plate 1 with the duplex nickel plating steel band of regular shape or double-deck nickel strap with the nickel foam substrate double team of non-filler section on the pole plate 1 in the centre, earlier through the spot welding location, through roll welding it is welded together securely then and constitute electrode 3, in this structure, nickel plated steel strip or nickel strap with regular shape is called " integrated lug drainage strip " 2, the nickel foam substrate that is filled with the used in battery electroactive substance is through oven dry, roll, the tablet that cuts into regular size is called " pole plate " 1, and double-deck " integrated lug drainage strip " 2 nickel foam substrates that clip non-filler section on " pole plate " 1 weld together and are called " electrode " 3.
The carrier material of manufacturing pole plate 1 of the present invention is a nickel foam, and pole plate 1 one ends have the blank segment between 2mm～8mm, do not fill the used in battery electroactive substance, this blank segment be and the weld zone of " integrated lug drainage strip " 2 between.The material of " integrated lug drainage strip " 2 is nickel plated steel strip or nickel strap, and thickness in monolayer is between 0.05mm～0.2mm.Adopt double-deck " integrated lug drainage strip " 2 with the blank nickel foam segment double team on " pole plate " 1 in the centre, and the mode by welding welds together formation electrode 3 securely with it.
The preparation method of a kind of nickel metal hydride sealing square battery electrode of the present invention, concrete steps are as follows:
(1) pole plate is made
The positive and negative electrode of battery all adopts nickel foam substrate as carrier, and the used in battery active material slurry is filled in the nickel foam substrate, and is dry under set point of temperature, be rolled into respectively 0.3～0.8mm thick about, cut out pole plate 1 to given size.Nickel foam substrate one end has the blank segment between 2mm～8mm, does not fill the used in battery electroactive substance.This blank segment be and the weld zone of " integrated lug drainage strip " 2 between.
(2) " integrated lug drainage strip " made
Between 0.05mm～0.2mm, material is the light sheet of nickel plated steel strip or nickel strap with thickness in monolayer, and stamping-out becomes " the integrated lug drainage strip " 2 of regular shape, given size.
(3) electrode is made
With " integrated lug drainage strip " 2 with the nickel foam substrate double team of non-filler section on the pole plate 1 in the centre, earlier through the spot welding location, through roll welding it is welded together securely then and constitutes electrode 3.
A kind of nickel metal hydride sealing square battery of the present invention, it is the nickel positive pole just very, negative pole is a hydrogen storage electrode, between both positive and negative polarity, separate with the polypropylene non-woven fabric barrier film, 17 positive poles of 18 negative pole folders, be assembled into the rectangular battery core, capacity of negative plates is more than 1.5 times of positive electrode capacity, seal behind the electrolyte of injection 6M KOH+1M LiOH, promptly make nickel metal hydride sealing square battery, after fully changing into, with the internal resistance of internal resistance instrument test battery, filling with the temperature measuring device test battery, temperature in the discharge process is being filled with battery ability meter test battery, voltage in the discharge process.
Adopt the positive and negative pole plate 1 of same size, identical " integrated lug drainage strip " 2.Carry out the making of following nickel metal hydride sealing square battery.
Embodiment:
Adopt individual layer " integrated lug drainage strip " to constitute electrode with positive and negative pole plate welding respectively in an embodiment.Be assembled into two of nickel metal hydride sealing square batteries with this type of electrode, be labeled as B1, B2.Comparative Examples:
Welding constitutes electrode 3 in the centre with the blank nickel foam segment double team on the positive and negative pole plate 1 respectively to adopt double-deck " integrated lug drainage strip " 2 in Comparative Examples.Be assembled into two of nickel metal hydride sealing square batteries with this type of electrode 3, be labeled as D1, D2.
With above 2 embodiment and 2 Comparative Examples totally 4 batteries, carry out performance test relatively.
The electrode roll welding, roll welding qualification rate measurement result sees Table 1.
The internal resistance measurement of battery the results are shown in Table 2.
The electrode of table 1. embodiment and Comparative Examples correspondence is made the roll welding qualification rate:
| Sealed cell number | Electrode is made roll welding qualification rate % |
| ??B1 | ??97 |
| ??B2 | ??97.1 |
| ??D1 | ??99.3 |
| ??D2 | ??99.2 |
The sealed cell internal resistance of table 2. embodiment and Comparative Examples correspondence:
| Sealed cell number | Internal resistance (m Ω) |
| ??D1 | ??2.7 |
| ??D2 | ??2.7 |
| ??B1 | ??1.2 |
| ??B2 | ??1.2 |
As can be seen from Table 1, adopt two " integrated lug drainage strip " 2 double team modes to carry out the qualification rate high about about 2.2% of roll welding than single " the integrated lug drainage strip " mode of employing.
As can be seen from Table 2, the internal resistance of D1, D2 battery is hanged down about 1.5m Ω than the internal resistance of B1, B2 battery.
According to shown in Figure 3, charge and discharge cycle is after 50 minutes, about temperature low about 20 degree of the temperature of D1, D2 battery than B1, B2 battery.Battery with 3C charging 4 minutes, stopped 10 seconds under the identical prerequisite of initial electric weight, and 3C discharge 3 minutes and 54 seconds circulates, and the temperature of battery same area, the comparable situation of temperature are measured in cyclic process.
According to shown in Figure 4, the 3C discharge process is about D1, the voltage high about 30mV of D2 cell voltage than B1, B2 battery.Battery charges to 100% of electric weight with 1C, stops 30 minutes, and 3C is discharged to cell voltage 1.0V, the comparable situation of discharge process voltage.
Claims (5)
1, a kind of preparation method of nickel metal hydride sealing square battery electrode, an end that it is characterized in that pole plate (1) is gone up the nickel foam substrate double team of non-filler section in the centre with the duplex nickel plating steel band or the double-deck nickel strap of regular shape with pole plate (1), earlier through the spot welding location, through roll welding it is welded together securely then and constitute electrode (3), in this structure, nickel plated steel strip or nickel strap with regular shape is called " integrated lug drainage strip " (2), the nickel foam substrate that is filled with the used in battery electroactive substance is through oven dry, roll, the tablet that cuts into regular size is called " pole plate " (1), and double-deck " integrated lug drainage strip " (2) clip " pole plate " (1) and go up the nickel foam substrate of non-filler section and weld together and be called " electrode " (3).
2, the preparation method of a kind of nickel metal hydride sealing square battery electrode according to claim 1, the carrier material that it is characterized in that making pole plate (1) is a nickel foam, pole plate (1) one end has the blank segment between 2mm～8mm, do not fill the used in battery electroactive substance, this blank segment be and the weld zone of " integrated lug drainage strip " (2) between.
3, the preparation method of a kind of nickel metal hydride sealing square battery electrode according to claim 1 is characterized in that the material of " integrated lug drainage strip " (2) is nickel plated steel strip or nickel strap, and thickness in monolayer is between 0.05mm～0.2mm.
4, the preparation method of a kind of nickel metal hydride sealing square battery electrode according to claim 1, it is characterized in that adopting double-deck " integrated lug drainage strip " (2) with the blank nickel foam segment double team on " pole plate " (1) in the centre, and the mode by welding, it is welded together formation electrode (3) securely.
5, the preparation method of a kind of nickel metal hydride sealing square battery electrode according to claim 1 is characterized in that concrete steps are as follows:
(1) pole plate is made
The positive and negative electrode of battery all adopts nickel foam substrate as carrier, and the used in battery active material slurry is filled in the nickel foam substrate, and is dry under set point of temperature, be rolled into respectively 0.3～0.8mm thick about, cut out pole plate (1) to given size.Nickel foam substrate one end has the blank segment between 2mm～8mm, does not fill the used in battery electroactive substance.This blank segment be and the weld zone of " integrated lug drainage strip " (2) between.
(2) " integrated lug drainage strip " made
Between 0.05mm～0.2mm, material is the light sheet of nickel plated steel strip or nickel strap with thickness in monolayer, and stamping-out becomes " integrated lug drainage strip " (2) of regular shape, given size.
(3) electrode is made
The nickel foam substrate double team of pole plate (1) being gone up the non-filler section with " integrated lug drainage strip " (2), welds together it securely through roll welding then and constitutes electrode (3) earlier through the spot welding location in the centre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910168565A CN101651210A (en) | 2009-08-19 | 2009-08-19 | Preparation method of nickel metal hydride sealing square battery electrode |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910168565A CN101651210A (en) | 2009-08-19 | 2009-08-19 | Preparation method of nickel metal hydride sealing square battery electrode |
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| CN101651210A true CN101651210A (en) | 2010-02-17 |
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| CN200910168565A Pending CN101651210A (en) | 2009-08-19 | 2009-08-19 | Preparation method of nickel metal hydride sealing square battery electrode |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101887973A (en) * | 2010-07-16 | 2010-11-17 | 杨福如 | Foamed nickel and conductive belt compounded battery pole piece framework |
| CN102234822A (en) * | 2010-11-05 | 2011-11-09 | 梧州三和新材料科技有限公司 | Manufacturing method of starting sheet for nickel electrolysis |
| CN102315411A (en) * | 2011-09-30 | 2012-01-11 | 天津国泰之光新材料技术研究院有限公司 | Manufacturing method of anode and cathode conducting strip of battery or capacitor |
| CN102354737A (en) * | 2011-09-30 | 2012-02-15 | 天津国泰之光新材料技术研究院有限公司 | Preparation method of negative plate of battery or capacitor |
| CN102437309A (en) * | 2011-09-30 | 2012-05-02 | 天津国泰之光新材料技术研究院有限公司 | Preparation method of positive plate of battery or capacitor |
| CN102509641A (en) * | 2011-09-28 | 2012-06-20 | 江苏富朗特新能源有限公司 | Pole piece of super capacitor or lithium battery cell |
| CN106848207A (en) * | 2017-03-06 | 2017-06-13 | 淄博君行电源技术有限公司 | The preparation method of water system capacitor batteries positive plate |
| WO2023241159A1 (en) * | 2022-06-17 | 2023-12-21 | 宁德时代新能源科技股份有限公司 | Negative electrode sheet and preparation method therefor, secondary battery including negative electrode sheet, and electric apparatus |
-
2009
- 2009-08-19 CN CN200910168565A patent/CN101651210A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101887973A (en) * | 2010-07-16 | 2010-11-17 | 杨福如 | Foamed nickel and conductive belt compounded battery pole piece framework |
| CN102234822A (en) * | 2010-11-05 | 2011-11-09 | 梧州三和新材料科技有限公司 | Manufacturing method of starting sheet for nickel electrolysis |
| CN102234822B (en) * | 2010-11-05 | 2012-10-03 | 梧州三和新材料科技有限公司 | Manufacturing method of starting sheet for nickel electrolysis |
| CN102509641A (en) * | 2011-09-28 | 2012-06-20 | 江苏富朗特新能源有限公司 | Pole piece of super capacitor or lithium battery cell |
| CN102315411A (en) * | 2011-09-30 | 2012-01-11 | 天津国泰之光新材料技术研究院有限公司 | Manufacturing method of anode and cathode conducting strip of battery or capacitor |
| CN102354737A (en) * | 2011-09-30 | 2012-02-15 | 天津国泰之光新材料技术研究院有限公司 | Preparation method of negative plate of battery or capacitor |
| CN102437309A (en) * | 2011-09-30 | 2012-05-02 | 天津国泰之光新材料技术研究院有限公司 | Preparation method of positive plate of battery or capacitor |
| CN102437309B (en) * | 2011-09-30 | 2014-01-01 | 天津国泰之光新材料技术研究院有限公司 | Preparation method of positive plate of battery or capacitor |
| CN106848207A (en) * | 2017-03-06 | 2017-06-13 | 淄博君行电源技术有限公司 | The preparation method of water system capacitor batteries positive plate |
| WO2023241159A1 (en) * | 2022-06-17 | 2023-12-21 | 宁德时代新能源科技股份有限公司 | Negative electrode sheet and preparation method therefor, secondary battery including negative electrode sheet, and electric apparatus |
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Open date: 20100217 |