CN2473755Y - Alkaline secondary battery with short circuit protection function and its series group battery - Google Patents
Alkaline secondary battery with short circuit protection function and its series group battery Download PDFInfo
- Publication number
- CN2473755Y CN2473755Y CN01235497U CN01235497U CN2473755Y CN 2473755 Y CN2473755 Y CN 2473755Y CN 01235497 U CN01235497 U CN 01235497U CN 01235497 U CN01235497 U CN 01235497U CN 2473755 Y CN2473755 Y CN 2473755Y
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- Prior art keywords
- battery
- alkaline secondary
- conducting terminal
- secondary cell
- nickel
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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
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Abstract
The utility model relates to an alkaline rechargeable battery, which is characterized in that at least on of a positive plate and a negative plate is welded with a conductive terminal. The conductive terminal is made of a steel belt substrate which is electroplated with at least one metal of the material group composed of nickel, tin, copper, lead; in a series battery having the alkaline rechargeable battery, the conductive terminal can be fused in 0-2 second when the short circuit current is larger than 30 ampere, therefore the danger of battery overheating and explosion, weeping for long-time short circuit of the battery can be avoided, and the safety performance of the battery can be improved greatly. The utility model is especially suitable to be used as a supplied power source in the miniature electric equipment such as the electric tool and toy, etc.
Description
The utility model relates to a kind of alkaline secondary cell, more particularly relates to the conducting terminal and the alkaline secondary cell series battery of electrode wherein.
In small-sized electric equipment such as electric tool, electronic toy, often adopt the alkaline secondary cell series battery as its supply power.Because the battery series connection more than 3 is arranged in this series battery usually, and the short circuit current by battery pack when the battery pack external short circuit is very big, causes easily that the cell body heating is hot even the danger of battery explosion is arranged; Above-mentioned danger takes place when avoiding the battery pack external short circuit, need in time cut off electric current when the battery pack short circuit, known method is design Electronic Protection circuit or adopt some temperature-sensitive elements in battery pack generally, to reach the protection purpose.For example, Chinese patent CN1197534A discloses the battery pack of using a kind of PTC element, PTC element resistance when charging normal is less, when battery pack during in short circuit, electric current by the PTC element is very big, make the PTC element at short notice temperature sharply raise, when the uniform temperature, the PTC component resistance raises suddenly, and this moment, circuit approached off state.After the PTC component temperature lowered, its resistance was got back to low resistive state again, but circuit conducting again.Use this PTC element that battery pack is externally disconnected during short circuit fast, and can anti-repeatedly short-circuit current rush; And for example, Chinese patent CN1177217A discloses a kind of battery pack with battery protecting circuit, battery is caused damage when preventing the battery pack external short circuit.This protective circuit can detect the battery pack state; when battery pack is separated with connecing electronic installation; protective circuit detects the battery pack external circuit and disconnects; then cut off being connected of battery and battery pack external power cord in the battery pack, to prevent that battery pack is owing to the short circuit that causes between the battery pack external power cord.Use this protective circuit can fully get rid of battery pack because the battery pack short circuit that mutual short circuit causes between the external power cord.The design people discovers, when the technology of foregoing invention patent disclosure was applied to electronic toy, power tool battery groups such as cadmium-nickel, hydrogen-nickel, have the following disadvantages: (1) price was higher relatively.Because electronic toys such as cadmium-nickel, hydrogen-nickel, power tool battery group itself are cheap, use PTC element or protective circuit all will make its cost increase; (2) to the influence of electrical property.Electronic toy, the general internal resistances of power tool battery group lower (in m Ω level) such as small-sized cadmium-nickel, hydrogen-nickel, and the resistance of PTC element certainly will increase the impedance of whole battery group generally also about tens m Ω like this, influences the heavy-current discharge performance of battery pack.Therefore,
The purpose of this utility model is to provide a kind of alkaline secondary cell with short-circuit protection function;
Further purpose of the present utility model is to provide a kind of simple in structure, with low cost, series battery with short-circuit protection function.
Alkaline secondary cell with short-circuit protection function of the present utility model, comprise battery case, combination cover cap, alkaline electrolyte and by positive plate, barrier film, the stacked rolled battery of forming of negative plate, it is characterized in that: one of them is welded with conducting terminal at least for described positive plate, negative plate, and described conducting terminal is to electroplate by at least a metal in nickel, tin, copper, the plumbous material group of forming to make on the steel band substrate;
Above-mentioned alkaline secondary cell, preferred described conducting terminal thickness is the 0.05-0.30 millimeter, width is the 2.0-20 millimeter;
Above-mentioned alkaline secondary cell, preferred described conducting terminal are provided with the defect part of thin neck, poroid, netted or combinations thereof along its length; The sectional area of defect part is the 20-80% of conducting terminal other parts sectional area; The thin neck of described conducting terminal is preferably the breach of dihedral or arc;
Above-mentioned alkaline secondary cell, the thick 3-4 micron of preferred described electrical contact surfaces coating;
Above-mentioned alkaline secondary cell, preferred described electrical contact surfaces electronickelling metal;
Above-mentioned alkaline secondary cell, preferred described positive plate is a nickel oxide electrode, described negative plate is selected from a kind of in cadmium electrode, metal hydride cell, the zinc electrode, is cooperated by described positive and negative pole plate and forms cadmium-nickel, metal hydride-nickel, zinc-nickel alkaline secondary cell respectively.
Contain the series battery of alkaline secondary cell as mentioned above, it is characterized in that: described conducting terminal is at steel band substrate surface electronickelling metal;
The series battery of above-mentioned alkaline secondary cell, preferred described conducting terminal are provided with the defect part of thin neck, poroid, netted or combinations thereof along its length; The sectional area of defect part is the 20-80% of conducting terminal other parts sectional area.
The utility model is based on following principle: in the battery of routine, anodally link to each other with combination cover cap by conducting terminal (also being called lug), when electric current flow through, lug generated heat, its heating power
P=I
2Its caloric value of R and current squaring are proportional, and electric current is big more, and its heating is obvious more.When the battery pack short circuit, when the electric current of the lug of flowing through can reach the battery pack operate as normal more than 30 times, when at this moment its caloric value is about the battery operate as normal more than 1000 times, owing to produce a large amount of heat in the short time, the lug temperature is sharply raise, reach fusing point, electric current is cut off in lug fusing.
The thin neck conducting terminal of preferred symmetrical dihedral or arc notch is based on following reason: the resistance R of village's material is relevant with its conductivity ρ, length L and sectional area S:
R=ρ * L/S indentation, there cross-sectional area is less, and under the situation of equal length, resistance herein is relatively large, and compare living heat with other parts more, is easier to fusing; Because it is its shared length in whole lug is less, few simultaneously for the resistance increase of whole lug, so both made lug when short circuit, be easier to fusing, it is few that the internal resistance of cell is increased.
In theory, when not considering non-essential resistance, short circuit current I
cOnly relevant with the electromotive force ε and the internal resistance r thereof of battery, not changing with what of series-connected cell number.
I
c=ε/r but in fact, always there is non-essential resistance during the battery pack short circuit, much no matter the value of this outside resistance R has, its short circuit current is:
I
c=n ε/(nr+R) wherein, n is the series-connected cell number, and r is the internal resistance of every battery, and R is a non-essential resistance; When n hour, I
cBe subjected to the influence of non-essential resistance R bigger; And along with the increase of n, the influence of non-essential resistance R is more and more littler, when n → ∞,
I
c→I
max＝ε/r。And in fact outside resistance R neither be changeless in series battery, and for example, along with the increase of series-connected cell number, the increase of brace makes the corresponding increase of R between each cell, when each brace resistance R
ConnectAll than the internal resistance of cell hour, above-mentioned short circuit current I
cAnd the trend relation that series-connected cell is counted between the n also exists, when n → ∞,
I
c→ I
Max=ε/(r+R
Connect) therefore, under actual conditions, along with the increase of number of battery cells in the series battery, its short circuit current is increasing, so its fusing time is shorter and shorter.
Battery of the present utility model and battery pack, greater than 30 amperes short circuit current the time, conducting terminal can fuse in second at 0-2, thus avoid the long-time short circuit of battery pack cause battery overheated and blast, danger such as leakage, improved the security performance of battery pack greatly.
Description of drawings Fig. 1 is a band conducting terminal battery lead plate schematic diagram.
Below in conjunction with description of drawings embodiment of the present utility model: the preliminary experiment example:
Steel band is containing the conventional electroplate liquid of nickel ion, and control plating condition is: pH4.0-4.6,40-50 ℃, current density 1.5-3A/dm2, electroplate 10-15min, and obtain the thick 3-4 micron of overlay coating nickel plated steel strip; Utilize constant-current source to make the 30A direct current by the above-mentioned nickel plated steel strip of length for 22.0mm, utilize stopwatch to survey its opening time, the relation of test nickel plated steel strip thickness and width and fusing time is as follows:
Table 1
| Experiment | 1 | 2 | 3 | 4 | 5 | 6 |
| Width (mm) | 3.0 | 4.0 | 5.0 | 3.0 | 4.0 | 5.0 |
| Thickness (mm) | 0.08 | 0.08 | 0.08 | 0.10 | 0.10 | 0.10 |
| Fusing time (s) | 0.9 | 2.0 | 3.8 | 2.2 | 5.4 | 8.2 |
Because the fusing of nickel plated steel strip is subjected to giving birth to all multifactor influences such as heat, heat radiation, surface and body phase character, therefore can't be exactly represent relation between its fusing time and the geometric parameter with formula, but the fusing time of nickel plated steel strip is subjected to the influence of its sectional area and surface area as can be seen basically, sectional area is big more, its resistance is more little, and living heat is few more, and infusibility is disconnected more, and in width and thickness two factors, thickness effect is bigger.Comparative example:
It is utmost point conducting terminal that employing is of a size of 22.0 * 4.0 * 0.08mm pure nickel band, with the AA type cadmium nickel battery that common process is made, tests the circuit fusing time with stopwatch, and lug does not disconnect in 30 seconds, and cell body is hot.
Embodiment 1-6
As shown in Figure 1, the steel band with arc notch 3 of getting length and be 22.0mm different in width and thickness is to electroplate 3-4 μ m nickel dam with the preliminary experiment same process, with nickel plated steel strip be welded on serve as on the foaming nickel substrate 1 conducting terminal 2 and routinely technology make the nickel oxide electrode plate, with the nickel plating perforated steel ribbon routinely slurry technology make the cadmium electrode plate
Claims (9)
1. the alkaline secondary cell that has short-circuit protection function; comprise battery case, combination cover cap, alkaline electrolyte and by positive plate, barrier film, the stacked rolled battery of forming of negative plate; it is characterized in that: one of them is welded with conducting terminal at least for described positive plate, negative plate, and described conducting terminal is to electroplate by at least a metal in nickel, tin, copper, the plumbous material group of forming to make on the steel band substrate.
2. alkaline secondary cell according to claim 1 is characterized in that: described conducting terminal thickness is the 0.05-0.30 millimeter, and width is the 2.0-20 millimeter.
3. alkaline secondary cell according to claim 1 is characterized in that: described conducting terminal is provided with the defect part of thin neck, poroid, netted or combinations thereof along its length; The sectional area of defect part is the 20-80% of conducting terminal other parts sectional area.
4. alkaline secondary cell according to claim 3 is characterized in that: the thin neck of described conducting terminal is the breach of dihedral or arc.
5. alkaline secondary cell according to claim 1 is characterized in that: the thick 3-4 micron of the overlay coating of described conducting terminal.
6. alkaline secondary cell according to claim 1 is characterized in that: described electrical contact surfaces electronickelling metal.
7. alkaline secondary cell according to claim 1, it is characterized in that: described positive plate is a nickel oxide electrode, described negative plate is selected from a kind of in cadmium electrode, metal hydride cell, the zinc electrode, is cooperated by described positive and negative pole plate and forms cadmium-nickel, metal hydride-nickel, zinc-nickel alkaline secondary cell respectively.
8. contain the series battery of alkaline secondary cell according to claim 1, it is characterized in that: described conducting terminal is at steel band substrate surface electronickelling metal.
9. the series battery of alkaline secondary cell according to claim 8 is characterized in that: described conducting terminal is provided with the defect part of thin neck, poroid, netted or combinations thereof along its length; The sectional area of defect part is the 20-80% of conducting terminal other parts sectional area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01235497U CN2473755Y (en) | 2001-04-18 | 2001-04-18 | Alkaline secondary battery with short circuit protection function and its series group battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01235497U CN2473755Y (en) | 2001-04-18 | 2001-04-18 | Alkaline secondary battery with short circuit protection function and its series group battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2473755Y true CN2473755Y (en) | 2002-01-23 |
Family
ID=33648615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN01235497U Expired - Lifetime CN2473755Y (en) | 2001-04-18 | 2001-04-18 | Alkaline secondary battery with short circuit protection function and its series group battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2473755Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100334769C (en) * | 2004-05-28 | 2007-08-29 | 日本无公害电池研究所 | Secondary battery |
| CN100485998C (en) * | 2004-10-29 | 2009-05-06 | Fdk能源株式会社 | Nickel bright-plated battery |
| CN101385162B (en) * | 2006-02-23 | 2010-11-10 | Sk能源株式会社 | Safety apparatus using high power battery |
| CN101752601B (en) * | 2008-12-08 | 2012-09-05 | 比亚迪股份有限公司 | Battery pack |
| CN114068865A (en) * | 2021-11-18 | 2022-02-18 | 万华化学集团股份有限公司 | Electrode structure with self-fusing function and soft package battery |
-
2001
- 2001-04-18 CN CN01235497U patent/CN2473755Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100334769C (en) * | 2004-05-28 | 2007-08-29 | 日本无公害电池研究所 | Secondary battery |
| CN100485998C (en) * | 2004-10-29 | 2009-05-06 | Fdk能源株式会社 | Nickel bright-plated battery |
| CN101385162B (en) * | 2006-02-23 | 2010-11-10 | Sk能源株式会社 | Safety apparatus using high power battery |
| CN101752601B (en) * | 2008-12-08 | 2012-09-05 | 比亚迪股份有限公司 | Battery pack |
| CN114068865A (en) * | 2021-11-18 | 2022-02-18 | 万华化学集团股份有限公司 | Electrode structure with self-fusing function and soft package battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BIYADI CO LTD Free format text: FORMER NAME OR ADDRESS: SHENZHEN BIYADI INDUSTRY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Patentee after: Biyadi Co., Ltd. Patentee before: Biyadi Industry Co Ltd, Shenzhen City |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20110418 Granted publication date: 20020123 |