CN201117734Y - Nickel-hydrogen battery - Google Patents
Nickel-hydrogen battery Download PDFInfo
- Publication number
- CN201117734Y CN201117734Y CNU2007201288134U CN200720128813U CN201117734Y CN 201117734 Y CN201117734 Y CN 201117734Y CN U2007201288134 U CNU2007201288134 U CN U2007201288134U CN 200720128813 U CN200720128813 U CN 200720128813U CN 201117734 Y CN201117734 Y CN 201117734Y
- Authority
- CN
- China
- Prior art keywords
- battery
- fixture
- pole piece
- battery according
- utility
- 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.)
- Expired - Lifetime
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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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- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model provides a nickel-hydrogen battery. The battery includes a battery shell (23), a pole core (21) and a fixing device (22). The pole core (21) is sleeved in the periphery of the fixing device (22); wherein, the fixing device (22) is a hollow column. As the nickel-hydrogen battery provided by the utility model is provided with the fixing device (22), the utility model can not only prevent the pole core volume to deform, but also can minish the occupying of the fixing device (22) on the volume of the inside air chamber of the battery to the largest extent; thereby reducing the internal pressure of the battery.
Description
Technical field
The utility model relates to a kind of Ni-MH battery.
Background technology
Ni-MH battery is widely used owing to having characteristics such as high electric weight, chargeable, environmental protection, and along with the restriction to nickel-cadmium cell, Ni-MH battery has the trend that progressively replaces nickel-cadmium cell.Along with Ni-MH battery is widely used in electric tool, also more and more higher to the requirement of Ni-MH battery, wherein most importantly to high power and long-life requirement.
Ni-MH battery for low capacity, technology known in those skilled in the art is reeled at the barrier film of battery for adopting the bigger volume of diameter, to realize the coupling of barrier film and battery case, still can not realize higher assembling ratio like this, thereby can not satisfy the needs of high-power battery.Also having the known technology of a kind of technical staff is that membrane coil tightly wraps with adhesive plaster around the back, pack into then in the battery case, the shortcoming of this structure is because barrier film and battery case size do not match, be that barrier film is not close to box hat inside, therefore, the heat that battery produces during discharging and recharging can not be distributed timely and effectively, influences the life-span of battery, and the shockproof properties of battery is also bad.
CN2814681Y discloses a kind of low capacity high-capacity nickel-hydrogen battery, this battery comprises the fixture that utmost point group (the being pole piece) volume that stops battery deforms, this device is for inserting the barred body in the utmost point group volume core, yet, because the positive/negative plate of battery in use can discharge gas, and adopt this battery, in use can cause the interior pressure of battery bigger.
The utility model content
The purpose of this utility model is to have battery now in use in order to overcome, and the shortcoming that inner pressure of battery is bigger provides in use a kind of, the Ni-MH battery that inner pressure of battery is less.
Designer of the present utility model finds, in the prior art, the reason that inner pressure of battery is bigger is that described fixture is due to the solid construction.Therefore, the utility model provides a kind of fixture with hollow-core construction, thereby, make described fixture when the pole piece volume that prevents battery deforms, reduce its taking to greatest extent to inside battery air chamber volume.
The Ni-MH battery that the utility model provides comprises battery case, pole piece and pole piece fixture, and pole piece is sleeved on the fixture periphery, and wherein, described fixture is a hollow cylinder.
The Ni-MH battery that the utility model provides because of having the fixture of hollow-core construction, has reduced it to the taking of inside battery air chamber volume, thereby has reduced the interior pressure of battery.In addition, it is thin to adopt the pole piece of the battery of described structure to do, and the middle fixture that adopts makes pole piece have higher elasticity, thereby has reduced the internal resistance of cell, and make pole piece contact, thereby guaranteed that battery has good performance of heat dissipation with battery case.
Description of drawings
Fig. 1 is the structural representation of the Ni-MH battery that provides of the utility model.
Fig. 2 is a kind of longitudinal section schematic diagram of preferred implementation of the fixture of the Ni-MH battery that provides of the utility model.
Fig. 3 is the structural representation of another kind of preferred implementation of the fixture of the Ni-MH battery that provides of the utility model.
Fig. 4 is the cross sectional representation of another kind of preferred implementation of the fixture of the Ni-MH battery that provides of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
As shown in Figure 1, a kind of Ni-MH battery that the utility model provides, this battery comprise battery case 23, pole piece 21 and fixture 22, and pole piece 21 is sleeved on fixture 22 peripheries, and wherein, described fixture 22 is a hollow cylinder.
Described battery case 23 is conventionally known to one of skill in the art.For example, described battery case 23 can be an arbitrary shape, is preferably cylindrically, and the material of described battery case 23 is conventionally known to one of skill in the art, as adopting metal shell or plastic casing etc.
Consisting of of described pole piece 21 is conventionally known to one of skill in the art, and in general, described pole piece 21 comprises positive plate, negative plate and the barrier film between positive plate and negative plate.Described positive plate comprises conducting base and positive electrode active materials, negative plate comprise conducting base and and negative active core-shell material, described conducting base, positive electrode active materials, negative active core-shell material and barrier film are conventionally known to one of skill in the art, do not give unnecessary details at this.
As shown in Figure 2, described fixture 22 can be the fixture that has the hollow cylinder structure arbitrarily, and for easy to process and cooperate better with battery case 23, described fixture 22 is preferably has hollow cylindrical shape.
The inner surface of described fixture 22 can be smooth, also can be concavo-convex.As shown in Figure 2, the frictional force when contacting with the volume wire surface in order to strengthen fixture 22 inner surfaces is preferably to have on the inner surface of described fixture 22 and dashes forward stupefied 11.Prominent stupefied 11 of described inner surface can be arbitrary shape, any amount, and can be arranged on the inner surface of fixture 22 by any regular.In order to cooperate better with the volume pin, prominent stupefied 11 of inner surface is preferably has square cross-sectional shape in stead, and number is 1-10, and becomes evenly to distribute along the center of circle.
The main effect of prominent stupefied 11 on described fixture 22 inner surfaces is to be complementary with volume the concavo-convex of wire surface, thereby when the volume pin inserts described fixture 22, by inner surface prominent stupefied 11 and the volume wire surface concavo-convex coupling, make fixture 22 become as a whole, to satisfy the needs of reeling with the volume pin.
The outer surface of described fixture 22 can be smooth, also can be concavo-convex, as shown in Figure 3 and Figure 4, can serve as the effect of rolling up pin in order to make fixture 22, is preferably to have prominent stupefied 11 on the outer surface of described fixture 22.Prominent stupefied 11 of described outer surface can be arbitrary shape, any amount, and can be arranged on the outer surface of fixture 22 by any regular, wherein, prominent stupefied 11 of outer surface is preferably has trapezoidal shape of cross section, number is 4-20, and becomes evenly to distribute along the center of circle.
On described fixture 22 outer surfaces prominent stupefied 11 are concavo-convex approximate with volume pin outer surface, thereby make fixture 22 can serve as the effect of rolling up pin better when the coiling barrier film.
A kind of Ni-MH battery with fixture 22 of structure as shown in Figure 3 that provides below in conjunction with the utility model is illustrated the assembling process of this battery.When battery is assembled, can adopt the battery case 23 of earlier pole piece 21 of winding being packed into, again fixture 22 is inserted traditional assembly method at pole piece 21 centers.
In assembling process, may scratch barrier film for fear of fixture 22, be preferably coiling pole piece 21 on fixture 22 earlier, the fixture 22 that will the be wound with pole piece 21 afterwards again battery case 23 of packing into can be avoided like this owing to insert the damage that fixture 22 may cause battery diaphragm.
Before operating winding begins, to roll up pin earlier inserts in the fixture 22, prominent stupefied 11 coupling of and fixture 22 inner surfaces concavo-convex by the volume wire surface makes that to roll up pin as a whole with 22 one-tenth of fixtures, begins coiling pole piece 21 on the outer surface of fixture 22 afterwards.When reeling, under the acting in conjunction of coiling cylinder pressure and volume pin torsion, prominent stupefied 11 bendings that can take place diametrically to a certain degree of fixture 22 outer surfaces, after coiling action finishes, with fixture 22 with twine thereon pole piece 21 battery case 23 of together packing into, at this moment no longer be subjected to the effect of external pressure because of fixture 22, thereby prominent stupefied 11 meetings of fixture 22 outer surface bendings restore to the original state, thereby the stretching pole piece 21 again, guaranteed that thus pole piece 21 peripheries contact fully with battery case 23, and guarantee that battery has higher assembling ratio, and can guarantee the consistency of battery assembling ratio to greatest extent.
Claims (10)
1. Ni-MH battery, this battery comprises battery case (23), pole piece (21) and pole piece fixture (22), and pole piece (21) is sleeved on fixture (22) periphery, it is characterized in that, and described fixture (22) is a hollow cylinder.
2. Ni-MH battery according to claim 1 is characterized in that, described hollow cylinder is a hollow cylinder.
3. Ni-MH battery according to claim 1 and 2 is characterized in that, the inner surface of described hollow cylinder has prominent stupefied (11).
4. Ni-MH battery according to claim 3 is characterized in that, prominent stupefied (11) of described inner surface have square cross-sectional shape in stead.
5. Ni-MH battery according to claim 3 is characterized in that, the number of prominent stupefied (11) of described inner surface is 1-10.
6. Ni-MH battery according to claim 3 is characterized in that, prominent stupefied (11) of described inner surface are uniformly distributed in the inner surface of described hollow cylinder along the center of circle.
7. Ni-MH battery according to claim 1 and 2 is characterized in that, has prominent stupefied (11) on the outer surface of described hollow cylinder.
8. Ni-MH battery according to claim 7 is characterized in that, prominent stupefied (11) of described outer surface have trapezoidal shape of cross section.
9. Ni-MH battery according to claim 7 is characterized in that, the number of prominent stupefied (11) of described outer surface is 4-20.
10. Ni-MH battery according to claim 7 is characterized in that, prominent stupefied (11) of described outer surface are uniformly distributed in the outer surface of described fixture (22) along the center of circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201288134U CN201117734Y (en) | 2007-08-20 | 2007-08-20 | Nickel-hydrogen battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201288134U CN201117734Y (en) | 2007-08-20 | 2007-08-20 | Nickel-hydrogen battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201117734Y true CN201117734Y (en) | 2008-09-17 |
Family
ID=39992318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201288134U Expired - Lifetime CN201117734Y (en) | 2007-08-20 | 2007-08-20 | Nickel-hydrogen battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201117734Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101789528A (en) * | 2010-02-11 | 2010-07-28 | 广州市云通磁电有限公司 | Cylinder-type nickel-metal hydride battery |
| CN101794912A (en) * | 2010-02-11 | 2010-08-04 | 广州市云通磁电有限公司 | Temperature-resisting cylindrical nickel-metal hydride battery |
-
2007
- 2007-08-20 CN CNU2007201288134U patent/CN201117734Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101789528A (en) * | 2010-02-11 | 2010-07-28 | 广州市云通磁电有限公司 | Cylinder-type nickel-metal hydride battery |
| CN101794912A (en) * | 2010-02-11 | 2010-08-04 | 广州市云通磁电有限公司 | Temperature-resisting cylindrical nickel-metal hydride battery |
| CN101794912B (en) * | 2010-02-11 | 2012-02-01 | 广州市云通磁电有限公司 | Temperature-resisting cylindrical nickel-metal hydride battery |
| CN101789528B (en) * | 2010-02-11 | 2013-03-06 | 广州市云通磁电有限公司 | Cylinder-type nickel-metal hydride battery |
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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: 20080917 |
|
| CX01 | Expiry of patent term |