CN1722506A - Accumulator and its preparing method - Google Patents
Accumulator and its preparing method Download PDFInfo
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- CN1722506A CN1722506A CNA2004100527919A CN200410052791A CN1722506A CN 1722506 A CN1722506 A CN 1722506A CN A2004100527919 A CNA2004100527919 A CN A2004100527919A CN 200410052791 A CN200410052791 A CN 200410052791A CN 1722506 A CN1722506 A CN 1722506A
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- wire netting
- storage battery
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- pole plate
- net
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
This invention relates to an accumulator, comprising the following steps: joining the positive plate, baffle plate, negative plate and electrolytic solution in the cell housing, wherein, the positive and negative plates is formed by coating active material on both sides of the metallic base, and one lateral side of at least one of the positive and negative plates is located with metallic net embedded in the lateral side of the plate. The invention has the advantages of simple structure of accumulator plate, lower essential resistance, higher discharge capacity and simple preparing method.
Description
[technical field]
The present invention relates to a kind of storage battery and preparation method thereof, relate to a kind of preparation method of conductive plate and this storage battery conductive plate of storage battery or rather.
[background technology]
Along with the progress of science and technology, the application of storage battery more and more widely, people are more and more higher to the performance requirement of storage battery, such as requiring the higher capacity of storage battery, can fast charging and discharging or the like.
In order to improve battery capacity, generally adopt the conducting base of metal foaming material (as nickel foam, foam copper, nickel felt etc.) at present as battery limited capacity electrode.These electrodes are in manufacturing process, it is more tight for active material is filled, usually to carry out repeatedly roll-in to improve the packing density of active material to pole piece, the roll-in process makes the pole piece that is filled with active material become more crisp, toughness is relatively poor, pole piece easily ruptures in assembling or use, the catchment effect variation of electrode, and the internal resistance of cell rises.
For the electrode that uses punching or hauling type ribbon base, be illustrated in figure 1 as a kind of anode plate schematic diagram of the prior art, filled negative electrode active material 31 in the both sides of this negative electrode substrate 32 and the hole, though the intensity of kind electrode is higher, but this conducting base belongs to planar structure, with regard to the characteristic of cell active materials, its catchment effect is bad, is unsuitable for requiring the high-performance storage battery of high current charge-discharge.
Chinese patent publication number CN1034039C discloses a kind of nickel-hydride accumulator for large capacity electric vehicle, wherein, all has tree root shape currect collecting net in the positive/negative plate of battery.The weak point of this invention is: the web frame complexity of tree root shape in the pole plate, the manufacture method complexity of this battery pole plates.
[summary of the invention]
First purpose of the present invention is, provide a kind of electrode plate structure simple, have the lower internal resistance of cell, higher discharge capacity, a storage battery of fast charging and discharging performance and higher discharge voltage plateau preferably.
Second purpose of the present invention provides the simple storage battery manufacture method of a kind of making.
First purpose of the present invention is achieved through the following technical solutions:
A kind of storage battery, be that positive plate, dividing plate, negative plate and electrolyte are accommodated in the battery case, wherein, positive plate, negative plate are by forming at the two sides of metallic matrix coating active material, wherein, at least one side also is provided with wire netting in described positive plate or the negative plate, and described wire netting embeds described pole plate side.
Technique scheme further is improved to:
Wherein said wire netting is selected from nickel wire netting, copper wire netting, nickel plating copper mesh, nickel plating steel mesh, titanium metal net, plumbous net, the lead alloy net at least a.
Wherein said wire netting can be tiltedly to draw in the net or mesh grid or the punching net that forms by punching.
The area of wherein said wire netting is less than or equal to the area of pole plate single side face, in the wire netting
Plated area is 1%～30% of a pole plate single side face area, for the battery limited capacity
The pole plate of electrode (generally using metal foaming material to be matrix), gold in the wire netting
Belonging to the area that covers is 1%～15% of pole plate single side face area.
The degree of depth that wherein said wire netting embeds described pole plate side is no more than half of electrode thickness, is preferably 0.01～0.5mm.
The aperture of wherein said wire netting mesh is 0.05～10mm.
Wherein the metallic matrix of positive and negative pole plate, coated active material, dividing plate and electrolyte have no particular limits, and can adopt material conventional in the prior art.
Second purpose of the present invention is achieved through the following technical solutions:
A kind of preparation method of storage battery comprises that positive plate, dividing plate, negative plate are stacked gradually the formation pole piece to be accommodated in the battery case, injects electrolyte and also seals, and wherein, the preparation of positive and negative pole plate may further comprise the steps:
(1) in the two sides of positive and negative electrode sheetmetal matrix coating active material, oven dry;
(2) at least one a side embeds wire netting in positive plate that step (1) obtains or negative plate;
(3) with the pole plate roll-in, cut.
The invention has the advantages that: accumulator plate is simple in structure, and storage battery has lower internal resistance, higher discharge capacity, fast charging and discharging performance and higher discharge voltage plateau preferably, and the preparation method of storage battery is simple.
[description of drawings]
Fig. 1 is a kind of anode plate schematic diagram of prior art
Fig. 2 is a kind of anode plate schematic diagram of the present invention
Fig. 3 is a kind of wire netting planar structure schematic diagram that the present invention adopts
Fig. 4 is embodiment and comparative example discharge curve comparison diagram
Symbol description
21-mesh, 31-negative electrode active material
32-negative electrode substrate, 33-wire netting
[embodiment]
Below the present invention is described in detail.
A kind of storage battery, be that positive plate, dividing plate, negative plate and electrolyte are accommodated in the battery case, wherein, positive plate, negative plate are by forming through the oven dry roll-in at the two sides of metallic matrix coating active material, positive plate or negative plate also are provided with wire netting at least one side among both, and wire netting embeds described pole plate side.For the pole plate that uses metal foaming material as matrix, can improve the pliability of pole plate by establishing wire netting, reduce the breaking degree of pole plate in assembling or use, thereby can improve the catchment effect of electrode, reduce the internal resistance of battery; For the pole plate that uses punching or hauling type ribbon base, the wire netting of embedding can change its planar structure, thereby can improve the catchment effect of electrode, and the rapid large-current that can improve storage battery discharges and recharges situation.As shown in Figure 2, also be provided with wire netting 33 in the side of negative plate, wire netting 33 embeds the negative plate side.
As shown in Figure 3, for a kind of wire netting planar structure schematic diagram, wherein comprise a plurality of mesh 21; Consider that from conductivity and technology realization aspect wire netting has conductivity and mechanical strength preferably, embed easily in the pole plate of storage battery, form conductive network, thereby improve the conductivity of electrode with original conducting base in the middle of the electrode; Simultaneously because wire netting has good flexible, easy fracture not in the assembling of electrode and use, thus can improve mechanical strength of electrodes and catchment effect, reduce the internal resistance of battery.
The material of wire netting, can be at least a in nickel screen, copper mesh, nickel plating copper mesh, nickel plating steel mesh, titanium metal net, plumbous net, the lead alloy net, can select above-mentioned different material for use according to the difference of concrete positive and negative pole plate, such as, for metal foaming material is the positive plate of matrix, can adopt nickel screen; For adopting Punching steel strip is the negative plate of matrix, can adopt in nickel screen, copper mesh, nickel plating copper mesh, nickel plating steel mesh, the titanium metal net at least a; For the pole plate of lead acid accumulator, can adopt in plumbous net, the lead alloy net at least a.
The area of wire netting is less than or equal to the area of pole plate side, plated area is 1%～30% of a pole plate single side face area in the wire netting, for the pole plate of battery limited capacity electrode (generally using metal foaming material to be matrix), plated area is 1%～15% of a pole plate single side face area in the wire netting.If plated area is too big, with influencing the performance performance of active material, if plated area is too little, to the internal resistance of battery, discharge capacity, to charge and discharge improved combination properties such as ability, discharge voltage plateau fast less.
The degree of depth of wire netting embedding pole plate side is no more than half of electrode thickness, if embedding is too dark, then influences the intensity of pole plate easily, if embed too shallow, then making or using in the engineering, additional metal layer is separated with pole plate easily, and battery performance is had a negative impact.The degree of depth that additional metal layer embeds described pole plate side is preferably 0.01～0.5mm.
The shape of the mesh of wire netting can be at least a in hexagon, square, rhombus, circle or the ellipse.The aperture of mesh is 0.05～10mm, and the aperture is too big, and the catchment effect of wire netting is bad, and conductivity is relatively poor, and the internal resistance of cell is improved DeGrain; Wherein, the aperture is adopted with mesh and is had diameter of a circle of the same area.
Wire netting can be positioned at any one or both sides of pole plate.The existence of wire netting, the intensity and the conductivity of electrode have greatly been improved, but also increased the thickness of electrode simultaneously, might bring difficulty to the assembly technology of follow-up battery, so will select wire netting to be positioned at any one or both sides of pole plate according to the actual conditions of battery performance requirement and battery assembly technology.
The preparation of positive and negative pole plate may further comprise the steps among the preparation method of storage battery of the present invention:
(1) in the two sides of positive and negative electrode sheetmetal matrix coating active material, oven dry;
(2) wire netting is embedded in the positive plate that obtains by step (1) or the negative plate at least one a side;
(3) with the pole plate roll-in, cut.
Wherein, the condition of wherein said oven dry can be to dry with baking oven or tower drier, and temperature is preferably 80～140 ℃, more preferably 100～120 ℃.Wire netting is embedded the pole plate side can be realized by the mode of roll-in.
Be that the invention will be further described for example below with the Ni-MH battery; certainly the present invention is not limited in Ni-MH battery; also be not limited only to the cited situation of embodiment, the storage battery of the situation that all are identical with structure of the present invention and identical preparation method are at the row of protection.
[embodiment one]
Anodal preparation: ball-shape nickel hydroxide, cobalt protoxide, a small amount of additive and binding agent, water are stirred, are mixed into pasty slurry by a certain percentage, and it is 430g/m that this slurry is packed into surface density
2, a face down bonding is connected in the nickel foam of the banded drainage terminal of nickel system, drying then, at the wire netting of pole piece one side roll-in with the identical size of foaming nickel lateralarea, it is 0.25mm that this wire netting adopts thickness, the aperture is 2.0 * 4.0mm, and the mesh rate is about 88% nickel and tiltedly draws in the net.After roll-in, cut and make the positive plate that is of a size of 85mm * 40mm * 0.65mm, wherein, the wire netting insert depth is 0.20mm.
The preparation of negative pole: take by weighing alloyed powder, binding agent, additive, mix, stir into pasty state, coat on the punching nickel plated steel strip, oven dry, roll-in, cut into the negative plate that is of a size of 115mm * 40.7mm * 0.34mm with certain proportion.
The assembling of battery: positive plate, PP barrier film, negative plate are stacked gradually the cylindrical cell external case that the electrode group that is wound into scroll is put into an end opening, add electrolyte, making nominal capacity after the sealing is the AA type metal hydride-nickel cell of 2100mAh.
[embodiment two]
Anodal preparation: except not having the roll-in wire netting, all the other are identical with embodiment one positive plate.
The preparation of negative pole: take by weighing alloyed powder, binding agent, additive, mix, stir into pasty state, coat on the perforation nickel plated steel strip with certain proportion, oven dry, at negative pole one side roll-in wire netting, this wire netting adopts the nickel identical with embodiment one specification tiltedly to draw in the net.The size that used nickel tiltedly draws in the net is identical with the lateralarea size of perforated anode nickel plated steel strip, cuts into the negative plate that is of a size of 115mm * 40.7mm * 0.34mm, and wherein, the wire netting insert depth is 0.15mm.
The assembling of battery: identical with embodiment one.
[embodiment three]
Adopt the negative plate that obtains that embodiment one obtains positive plate and embodiment two to be assembled into battery by the method identical with embodiment one.
[comparative example]
Except roll-in wire netting on positive plate not, all the other are identical with embodiment one.
With above-mentioned four kinds of batteries, with 210mA (0.1C) charging 15 hours, placed 30 minutes, 630mA (0.3C) is discharged to 1.0V.So circulation is three times, and writing down last discharge capacity is the battery actual capacity.
[performance test]
Internal resistance of cell test: adopt to exchange the internal resistance that internal resistance test device is measured embodiment one, two, three and comparative example battery respectively.
Discharge capacity and voltage platform: the above embodiments one, two, three and comparative example battery were charged 35 minutes with 2C (4200mA) respectively ,-Δ V=10mV, 1C is discharged to 1.0V.The discharge capacity of battery is as shown in table 1.
Table 1
| The internal resistance of cell (m Ω) | Discharge capacity (mAh) | ||
| 0.3C | 1.0C | ||
| Embodiment one | 13.0 | 2093 | 1624 |
| Embodiment two | 13.9 | 2102 | 1635 |
| Embodiment three | 9.9 | 2074 | 1678 |
| Comparative example one | 17.7 | 2096 | 1540 |
From table 1 and Fig. 4 as can be seen, the internal resistance of embodiment battery is less than the internal resistance of comparative example battery; The discharge capacity of embodiment battery and voltage platform all are higher than the comparative example battery, and the fast charging and discharging performance of embodiment battery is better.
To sum up, storage battery of the present invention, electrode plate structure is simple, and storage battery has lower internal resistance, higher discharge capacity, fast charging and discharging performance and higher discharge voltage plateau preferably, and the preparation method is simple.
Claims (16)
1. storage battery, be that positive plate, dividing plate, negative plate and electrolyte are accommodated in the battery case, wherein, positive plate, negative plate are by forming at the two sides of metallic matrix coating active material, it is characterized in that: at least one side also is provided with wire netting in described positive plate or the negative plate, and described wire netting embeds described pole plate side.
2. according to the storage battery described in the claim 1, it is characterized in that: described wire netting is selected from nickel wire netting, copper wire netting, nickel plating copper mesh, nickel plating steel mesh, titanium metal net, plumbous net, the lead alloy net at least a.
3. according to the storage battery described in claim 1 or 2, it is characterized in that: described wire netting can be tiltedly to draw in the net or mesh grid or the punching net that forms by punching.
4. according to the storage battery described in the claim 1, it is characterized in that: plated area is 1%～30% of a pole plate single side face area in the described wire netting.
5. according to the storage battery described in the claim 1, it is characterized in that: plated area is 1%～15% of a pole plate single side face area in the described wire netting.
6. according to the storage battery described in the claim 1, it is characterized in that: the degree of depth that described wire netting embeds described pole plate side is no more than half of electrode thickness.
7. according to the storage battery described in the claim 1, it is characterized in that: the degree of depth that described wire netting embeds described pole plate side is 0.01～0.5mm.
8. according to the storage battery described in the claim 1, it is characterized in that: the aperture of described wire netting mesh is 0.05～10mm.
9. the preparation method of a storage battery comprises that positive plate, dividing plate, negative plate are stacked gradually the formation pole piece to be accommodated in the battery case, injects electrolyte and also seals, and it is characterized in that: the preparation of positive and negative pole plate may further comprise the steps:
(1) in the two sides of positive and negative electrode sheetmetal matrix coating active material, oven dry;
(2) at least one a side embeds wire netting in positive plate that step (1) obtains or negative plate;
(3) with the thickness of pole plate roll-in to technological requirement.
10. according to the preparation method of the storage battery described in the claim 9, it is characterized in that: described wire netting is selected from nickel wire netting, copper wire netting, nickel plating copper mesh, nickel plating steel mesh, titanium metal net, plumbous net, the lead alloy net at least a.
11. the preparation method according to the storage battery described in claim 9 or 10 is characterized in that: described wire netting can be tiltedly to draw in the net or mesh grid or the punching net that forms by punching.
12. the preparation method according to the storage battery described in the claim 9 is characterized in that: plated area is 1%～30% of a pole plate single side face area in the described wire netting.
13. the preparation method according to the storage battery described in the claim 9 is characterized in that: plated area is 1%～15% of a pole plate single side face area in the described wire netting.
14. the preparation method according to the storage battery described in the claim 9 is characterized in that: the degree of depth that described wire netting embeds described pole plate side is no more than half of electrode thickness.
15. the preparation method according to the storage battery described in the claim 9 is characterized in that: the degree of depth that described wire netting embeds described pole plate side is 0.01～0.5mm.
16. the preparation method according to the storage battery described in the claim 9 is characterized in that: the aperture of described wire netting mesh is 0.05～10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100527919A CN1722506A (en) | 2004-07-13 | 2004-07-13 | Accumulator and its preparing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100527919A CN1722506A (en) | 2004-07-13 | 2004-07-13 | Accumulator and its preparing method |
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| CN1722506A true CN1722506A (en) | 2006-01-18 |
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| CNA2004100527919A Pending CN1722506A (en) | 2004-07-13 | 2004-07-13 | Accumulator and its preparing method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102169993A (en) * | 2011-04-07 | 2011-08-31 | 先进储能材料国家工程研究中心有限责任公司 | Alkaline secondary battery and production method thereof |
| CN102891008A (en) * | 2011-07-21 | 2013-01-23 | 北京化工大学 | Nickel hydroxide nanosheet thin-film material as well as preparation method and application thereof |
| CN104037391A (en) * | 2014-06-25 | 2014-09-10 | 江苏佳成科技股份有限公司 | Composite polar plate of storage battery |
| CN104779402A (en) * | 2015-04-24 | 2015-07-15 | 惠州市豪鹏科技有限公司 | Novel ultrathin battery and preparation method thereof |
| CN105140542A (en) * | 2015-08-28 | 2015-12-09 | 张家港讴德电池技术有限公司 | Grid lowering interface resistance and preparation method thereof |
| CN106129459A (en) * | 2016-08-17 | 2016-11-16 | 李家敏 | The energy-conservation lithium battery of potential |
| CN108155346A (en) * | 2017-11-23 | 2018-06-12 | 合肥国轩高科动力能源有限公司 | A kind of preparation method of based lithium-ion battery positive plate |
| CN110729457A (en) * | 2019-10-22 | 2020-01-24 | 益阳科力远电池有限责任公司 | Method for manufacturing positive plate of nickel battery |
-
2004
- 2004-07-13 CN CNA2004100527919A patent/CN1722506A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102169993A (en) * | 2011-04-07 | 2011-08-31 | 先进储能材料国家工程研究中心有限责任公司 | Alkaline secondary battery and production method thereof |
| CN102169993B (en) * | 2011-04-07 | 2013-06-26 | 先进储能材料国家工程研究中心有限责任公司 | Alkaline secondary battery and production method thereof |
| CN102891008A (en) * | 2011-07-21 | 2013-01-23 | 北京化工大学 | Nickel hydroxide nanosheet thin-film material as well as preparation method and application thereof |
| CN104037391A (en) * | 2014-06-25 | 2014-09-10 | 江苏佳成科技股份有限公司 | Composite polar plate of storage battery |
| CN104779402A (en) * | 2015-04-24 | 2015-07-15 | 惠州市豪鹏科技有限公司 | Novel ultrathin battery and preparation method thereof |
| CN105140542A (en) * | 2015-08-28 | 2015-12-09 | 张家港讴德电池技术有限公司 | Grid lowering interface resistance and preparation method thereof |
| CN106129459A (en) * | 2016-08-17 | 2016-11-16 | 李家敏 | The energy-conservation lithium battery of potential |
| CN108155346A (en) * | 2017-11-23 | 2018-06-12 | 合肥国轩高科动力能源有限公司 | A kind of preparation method of based lithium-ion battery positive plate |
| CN110729457A (en) * | 2019-10-22 | 2020-01-24 | 益阳科力远电池有限责任公司 | Method for manufacturing positive plate of nickel battery |
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