CN201918459U - Foaming nickel matrix of nickel electrode and nickel battery - Google Patents
Foaming nickel matrix of nickel electrode and nickel battery Download PDFInfo
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- CN201918459U CN201918459U CN2011200233431U CN201120023343U CN201918459U CN 201918459 U CN201918459 U CN 201918459U CN 2011200233431 U CN2011200233431 U CN 2011200233431U CN 201120023343 U CN201120023343 U CN 201120023343U CN 201918459 U CN201918459 U CN 201918459U
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- nickel
- foaming
- battery
- surface density
- ring part
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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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Abstract
The utility model discloses a foaming nickel matrix of a nickel electrode, which comprises a winding internal ring part and a winding external ring part. The aerial density of foaming nickel of the winding internal ring part is more than the aerial density of the foaming nickel of the winding external ring part. The utility model further discloses a nickel battery which adopts the foaming nickel matrix. Because of the aerial density difference of the winding internal ring part and the winding external ring part, the problems of cracking and breaking of a winding internal ring positive plate of a rechargeable battery are solved; the larger capacity of the battery is ensured and the performance of the battery is brought into full play.
Description
Technical field
The utility model relates to battery, particularly relates to the foaming Ni substrate of a kind of nickel-based battery and nickel electrode thereof.
Background technology
Be subjected to people's extensive attention because of advantage with height ratio capacity, memory-less effect and a series of uniquenesses such as pollution-free as the Ni-MH battery of one of " environmental protection power supply ".
Because the capacity of NiH electrode positive limited battery is one of key issue that improves by Ni-MH battery so improve Performance of nickel electrode.Traditional takeup type Ni-MH battery is positive pole, barrier film and negative pole to be wound into a cylinder be inserted in battery steel shell, anodal basis material multiselect foamed nickel material, but because coiling inner ring radius of curvature is little, stress is big, positive plate is easy to occur crackle, fracture, thereby causes: (1) battery capacity is low; (2) the just as easy as rolling off a log dry linting of cracks forms micro-short circuit, or forms burr in pole piece fracture place, pierces through barrier film easily and causes battery short circuit; Problem such as (3) internal resistance of cell is bigger than normal, thus the performance of battery influenced.In order to overcome above problem, the existing method that strengthens anodal foaming Ni substrate material face density that adopts reduces the base fracture that occurs in the winding process, but because the increase of basis material, causing more, the design of high-capacity battery encounters difficulties.The not material such as the materials such as steel band, steel mesh of easy fracture are also arranged when adopt reeling, but cause the electric conductivity of electrode slice to descend.
The utility model content
Main purpose of the present utility model is exactly at the deficiencies in the prior art, a kind of foaming Ni substrate and nickel-based battery of nickel electrode are provided, can solve the problem that crackle, fracture appear in rechargeable battery coiling inner ring positive plate easily, can guarantee that battery can be designed to higher capacity and give full play to battery performance simultaneously again.
For achieving the above object, the utility model is by the following technical solutions:
A kind of foaming Ni substrate of nickel electrode comprises coiling inner round portion and coiling outer ring part, and the surface density of the foaming nickel of described coiling inner round portion is greater than the surface density of the foaming nickel of described coiling outer ring part.
Preferably, the surface density of the foaming nickel of described coiling inner round portion is uniformly, and the surface density of the foaming nickel of described coiling outer ring part also is uniform.
Preferably, the surface density of the foaming nickel of described coiling inner round portion is 300 g/ ㎡-380g/ ㎡, and the surface density of the foaming nickel of described coiling outer ring part is 200g/ ㎡-300g/ ㎡.
A kind of nickel-based battery, the positive plate, negative plate and the barrier film that comprise coiling poling group, described positive plate has the foaming Ni substrate, it is characterized in that, described foaming Ni substrate comprises coiling inner round portion and coiling outer ring part, and the surface density of the foaming nickel of described coiling inner round portion is greater than the surface density of the foaming nickel of described coiling outer ring part.
Preferably, the surface density of the foaming nickel of described coiling inner round portion is uniformly, and the surface density of the foaming nickel of described coiling outer ring part also is uniform.
Preferably, the surface density of the foaming nickel of described coiling inner round portion is 300g/ ㎡-380g/ ㎡, and the surface density of the foaming nickel of described coiling outer ring part is 200g/ ㎡-300g/ ㎡.
Preferably, described nickel-based battery is a Ni-MH battery.
The utility model beneficial technical effects is:
According to the utility model, the foaming Ni substrate of nickel electrode positive plate comprises coiling inner round portion and coiling outer ring part, the surface density of the foaming nickel of coiling inner round portion is generally greater than the surface density of the foaming nickel of coiling outer ring part, like this, when the foaming Ni substrate is filled the powder of nickel electrode, in the little place of matrix foaming nickel surface density, can fill the positive mix of more amount, guarantee to obtain the battery of high power capacity, positive plate herein is in the coiling outer ring, and coiling outer ring radius of curvature is bigger, stress is less, and positive plate also is not easy to occur crackle, fracture, and in the big place of matrix foaming nickel surface density, but the filling powder amount is few, but the intensity of matrix is big herein, and the positive plate pliability is good, helps solving coiling inner ring positive plate and occurs crackle easily, breakage problem.Therefore, the utility model efficiently solves rechargeable battery coiling inner ring positive plate and occurs crackle, breakage problem easily, also guarantees that battery can be designed to higher capacity and give full play to battery performance simultaneously.
Description of drawings
Fig. 1 is the surface density varying type foaming Ni substrate structural representation according to an embodiment of the utility model;
The schematic diagram of the nickel electrode that Fig. 2 makes for the foaming Ni substrate that adopts an embodiment of the utility model;
Fig. 3 is the reel sectional view of the nickel-based battery behind the shell of the nickel electrode of an embodiment.
Embodiment
In conjunction with the accompanying drawings the utility model is further described in detail by the following examples.
See also Fig. 1, the foaming Ni substrate according to the nickel electrode of an embodiment comprises coiling inner round portion 1 and coiling outer ring part 2, and the surface density of the foaming nickel of coiling inner round portion 1 is greater than the surface density of the foaming nickel of described coiling outer ring part 2.
In a preferred embodiment, the surface density of the foaming nickel of described coiling inner round portion is uniformly, and the surface density of the foaming nickel of described coiling outer ring part also is uniform.
More preferably, the surface density of the foaming nickel of described coiling inner round portion is 300g/ ㎡-380g/ ㎡.
More preferably, the surface density of the foaming nickel of described coiling outer ring part is 200g/ ㎡-300g/ ㎡.
See also Fig. 2, the nickel electrode positive plate that the foaming Ni substrate of an embodiment of employing is made comprises inner round portion 11 and outer ring part 12 equally, is filled with positive mix separately.Wherein, the surface density of inner round portion 11 foaming nickel is big, and institute's powder amount of filling out is less, but the intensity of matrix is big, and the positive plate pliability is good, and the surface density of outer ring part 12 foaming nickel is little, and institute's powder amount of filling out is more.
See also Fig. 3, the nickel-based battery of an embodiment comprises battery case 5 and the utmost point group of packing into wherein, wherein nickel electrode, negative plate 4 and barrier film 3 are around being rolled into utmost point group, the coiling inner round portion 11 of nickel electrode positive plate is wound on the inner ring of nickel-based battery, and the coiling outer ring part 12 of nickel electrode positive plate is wound on the outer ring of nickel-based battery.
In one embodiment, nickel-based battery can select to adopt the foaming Ni substrate of previous embodiment.
Nickel-based battery can be the various coiled batteries that nickel electrode adopts the foaming Ni substrate, for example Ni-MH battery, nickel-zinc cell etc.
With the making capacity is that the AAA Ni-MH battery of 1000mAh is an example.Adopt the foaming Ni substrate of a kind of surface density varying type as shown in Figure 1, for example, the surface density at coiling inner round portion 1 place of foaming Ni substrate is 350g/ ㎡, the surface density at part 2 places, coiling outer ring is 260g/ ㎡, be made into nickel electrode then, obtain the electrode slice as Fig. 2, nickel electrode inner round portion 11 places foaming Ni substrate surface density is big, fill out that the powder amount is few, the pole piece pliability is big, part 12 places, nickel electrode outer ring foaming Ni substrate surface density is little, it is many to fill out the powder amount, guarantees the requirement of high power capacity.After nickel electrode (positive pole) was gone into box hat 5 with barrier film 3, negative pole 4 coilings, nickel electrode inner round portion 11 was in the coiling inner ring, and nickel electrode outer ring part 12 is in the coiling outer ring, as shown in Figure 3.Fluid injection afterwards, spot welding block, gland, seal and change into and be made into battery.
Below by test data embodiment of the present utility model and Comparative Examples are carried out performance relatively.
Embodiment: the battery that adopts 10000 AAA1000mAh of foaming Ni substrate making of the utility model surface density varying type.
Comparative Examples: adopt traditional foaming Ni substrate to make the battery of 10000 AAA1000mAh.
Battery performance is estimated:
(1) make in the process coiling short circuit ratio and change into short circuit ratio:
| ? | The coiling short circuit ratio | Change into short circuit ratio |
| Embodiment | 0.09% | 0.21% |
| Comparative Examples | 0.79% | 1.08% |
(2) battery of two kinds of schemes of employing is each 10, examines its 0.2C capacity (0.2 rate capability), and capacity sees the following form:
Through evidence: the battery capacity height, the short circuit ratio that adopt electrode of the present utility model to make greatly descend.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection range of the present utility model.
Claims (7)
1. the foaming Ni substrate of a nickel electrode is characterized in that, comprises coiling inner round portion and coiling outer ring part, and the surface density of the foaming nickel of described coiling inner round portion is greater than the surface density of the foaming nickel of described coiling outer ring part.
2. foaming Ni substrate as claimed in claim 1 is characterized in that, the surface density of the foaming nickel of described coiling inner round portion is uniformly, and the surface density of the foaming nickel of described coiling outer ring part also is uniform.
3. foaming Ni substrate as claimed in claim 2 is characterized in that, the surface density of the foaming nickel of described coiling inner round portion is 300 g/ ㎡-380g/ ㎡, and the surface density of the foaming nickel of described coiling outer ring part is 200g/ ㎡-300g/ ㎡.
4. nickel-based battery, the positive plate, negative plate and the barrier film that comprise coiling poling group, described positive plate has the foaming Ni substrate, it is characterized in that, described foaming Ni substrate comprises coiling inner round portion and coiling outer ring part, and the surface density of the foaming nickel of described coiling inner round portion is greater than the surface density of the foaming nickel of described coiling outer ring part.
5. nickel-based battery as claimed in claim 4 is characterized in that, the surface density of the foaming nickel of described coiling inner round portion is uniformly, and the surface density of the foaming nickel of described coiling outer ring part also is uniform.
6. nickel-based battery as claimed in claim 5 is characterized in that, the surface density of the foaming nickel of described coiling inner round portion is 300 g/ ㎡-380g/ ㎡, and the surface density of the foaming nickel of described coiling outer ring part is 200g/ ㎡-300g/ ㎡.
7. as each described nickel-based battery of claim 4-6, it is characterized in that described nickel-based battery is a Ni-MH battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200233431U CN201918459U (en) | 2011-01-25 | 2011-01-25 | Foaming nickel matrix of nickel electrode and nickel battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200233431U CN201918459U (en) | 2011-01-25 | 2011-01-25 | Foaming nickel matrix of nickel electrode and nickel battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201918459U true CN201918459U (en) | 2011-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200233431U Expired - Lifetime CN201918459U (en) | 2011-01-25 | 2011-01-25 | Foaming nickel matrix of nickel electrode and nickel battery |
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| Country | Link |
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| CN (1) | CN201918459U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102142561A (en) * | 2011-01-25 | 2011-08-03 | 深圳市量能科技有限公司 | Foaming nickel base body of nickel electrode, nickel battery and manufacturing methods thereof |
-
2011
- 2011-01-25 CN CN2011200233431U patent/CN201918459U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102142561A (en) * | 2011-01-25 | 2011-08-03 | 深圳市量能科技有限公司 | Foaming nickel base body of nickel electrode, nickel battery and manufacturing methods thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110803 |
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| CX01 | Expiry of patent term |