CN103035348B - Circuit brake - Google Patents
Circuit brake Download PDFInfo
- Publication number
- CN103035348B CN103035348B CN201110301379.6A CN201110301379A CN103035348B CN 103035348 B CN103035348 B CN 103035348B CN 201110301379 A CN201110301379 A CN 201110301379A CN 103035348 B CN103035348 B CN 103035348B
- Authority
- CN
- China
- Prior art keywords
- sensitive material
- temperature coefficient
- positive temperature
- material layer
- battery
- 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 - Fee Related
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Classifications
-
- 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 present invention relates to a kind of circuit brake, including：One positive temperature coefficient heat-sensitive material layer, the subregion of wherein described positive temperature coefficient heat-sensitive material layer side has projection, and first electrode layer and a second electrode lay, wherein described first electrode layer covers the surface of the positive temperature coefficient heat-sensitive material layer side, and the second electrode lay covers the surface of the positive temperature coefficient heat-sensitive material layer opposite side.
Description
Technical field
The present invention relates to circuit brake, more particularly, to a kind of positive temperature coefficient temperature-sensitive for circuit protection
Device.
Background technology
Thermistor is the resistance that a kind of resistance value is varied with temperature and changed.According to the difference of temperature coefficient, temperature-sensitive electricity
Resistance is generally divided into positive temperature coefficient (Positive Temperature Coefficient, PTC) thermistor and negative temperature system
Number (Negative Temperature Coefficient, NTC) thermistor.PTC thermistor resistance when temperature raises
Value increase, and NTC thermistor resistance value when temperature raises reduces.
For PTC thermistor, its can it is excessive in electric current, circuit is shielded when temperature is too high.In use, by its
Concatenation in circuit, under normal circumstances, its resistance very little, is lost also very little, does not influence circuit normal work；If but there is excessively stream
Occur (such as short circuit), its temperature rise, resistance also accordingly drastically raises, so as to have the function that to limit electric current, to avoid damaging
Component in circuit.After failture evacuation, the temperature of PTC thermistor declines automatically, returns to low resistive state again, therefore
PTC thermistor is also known as recoverability fuse.Thus be widely used in such as battery of mobile telephone group, digital battery group,
In the battery industry of laptop batteries group etc..
In the prior art, the PTC thermistor for the overheat protector of prismatic battery is an annual disk.Such as the institute of accompanying drawing 1
Its sectional view is shown as, wherein, the central area of PTC thermistor has a certain size circular hole 4, and the PTC thermistor
It is used to couple to form the first electrode layer 1 in loop with metal electrode cap (not shown) including its side, wherein the metal cap one
Side has projection, positive pole of the projection as battery, and the PTC thermistor is also included positioned at middle positive temperature coefficient temperature-sensitive material
The bed of material 2 and the second electrode lay 2 for being coupled with explosion-proof valve (not shown).
However, for the PTC thermistor of prior art, it needs to connect for example, by riveted mode and metal electrode cap
Connect, this causes complex manufacturing technology；And the riveted can introduce pressure in PTC thermistor and influence PTC thermistor
Performance.
The content of the invention
Therefore the task of the present invention is, proposes a kind of circuit brake, including：One positive temperature coefficient thermo-sensitive material
Layer, wherein the subregion of the positive temperature coefficient heat-sensitive material layer side has projection, and a first electrode layer and one the
Two electrode layers, wherein the surface of the first electrode layer covering positive temperature coefficient heat-sensitive material layer side, and described second
Electrode layer covers the surface of the positive temperature coefficient heat-sensitive material layer opposite side.So according to the first of the PTC devices of the present invention
Electrode layer replaces positive pole of the metal cap of the prior art as battery in prismatic battery, so as to saved the material of battery into
Sheet and cost of manufacture.
Preferably, the opposite side of the positive temperature coefficient heat-sensitive material layer has recess corresponding with the projection.This is recessed
The size and size in portion are configured to accommodate the projection of explosion-proof valve.
Preferably, the positive temperature coefficient heat-sensitive material layer be shaped as disc and the projection is located at the disk
The middle part of shape positive temperature coefficient heat-sensitive material layer.This make it that the projection is corresponding with the size of explosion-proof valve and position, to make
The circuit brake is preferably coupled to explosion-proof valve.
Preferably, the positive temperature coefficient heat-sensitive material layer includes polymer thermo-sensitive material.Polymer thermo-sensitive material can weigh
It is multiple to use, and the application scenario of the small size especially suitable for battery etc..
Preferably, the first electrode layer and the second electrode lay include one in nickel, corronil, stainless steel, iron
Kind is a variety of.Thus the production for different types of battery provides a variety of possibility, and battery manufacturer can be according to oneself product
And the needs of products application select the electrode material most matched for oneself product.
Relative to the PTC thermistor of prior art, the invention provides a kind of structure more simply to use PTC temperature-sensitives
The circuit brake of resistance, its first electrode layer can replace metal cap of the prior art and as the electrode of battery, from
And while battery material cost and installation cost has been saved, make battery protecting apparatus structure compacter so as to more
Good protective value.
Brief description of the drawings
Fig. 1 shows the sectional view of the PTC thermistor of the existing protection for prismatic battery；
Fig. 2 shows circuit brake according to an embodiment of the invention；
Fig. 3 shows the sectional view of circuit brake in Fig. 2；
Fig. 4 shows the sectional view of battery according to another embodiment of the present invention.
Embodiment
Although following text elaborates the detailed description of the various different embodiments of the present invention it should be appreciated that
Arrive, the scope of law of the invention is defined by the word of the claim appended by this patent.Detailed description should be interpreted only
It is exemplary, and non-depicted every kind of possible embodiment of the invention, because the every kind of possible embodiment of description, even if
It is possible to, and it is unpractical.Using current techniques or the technology researched and developed after present patent application day, can realize various
Interchangeable embodiment, this will be fallen into the range of the claim for defining the present invention.
Fig. 2 schematically illustrates circuit brake according to an embodiment of the invention, and Fig. 3 shows circuit in Fig. 2
The sectional view of protection device.In actual applications, the circuit brake can apply in prismatic battery, such as AAA batteries
Or AA batteries.
As shown in figure 3, the circuit brake includes PTC heat-sensitive material layers 102, and first electrode layer 101 and second
Electrode layer 103.Wherein the first electrode layer 101 covers the surface of the side of PTC heat-sensitive material layers 102, and the circuit protection
Device has projection 105 in this side；And the second electrode lay 103 covers the surface of the opposite side of PTC heat-sensitive material layers 102,
And the circuit brake has recess 104 corresponding with the projection in the opposite side.In actual applications, the projection
105 can for example be formed by Sheet Metal Forming Technology or other forming technologies.For example, PTC thermo-sensitive materials will equally be included by punching press
Layer 102, first electrode layer 101 and the second electrode lay 103, flat board circuit brake are from side punching press so that and
The side forms recess 104 and corresponding projection 105 is formed in opposite side.
As shown in Fig. 2 the circuit including PTC heat-sensitive material layers 102, first electrode layer 101 and the second electrode lay 103 is protected
The global shape of shield device is located at the middle part of the disc circuit brake for disc and the projection 105.Need to illustrate
, according to the difference of specific embodiment, such as the projection 105 may also be at other regions of PTC heat-sensitive material layers 102, example
As close to the subregion at edge.
In the present embodiment, the PTC heat-sensitive material layers of circuit brake include polymer thermo-sensitive material (Polymer
PTC), it has repeatable practicality and is suitable for the application scenario of small size.According to the difference of concrete application, the first electricity
Pole layer 101 and the second electrode lay 103 can include the one or more in nickel, corronil, stainless steel, iron.
Compared to the PTC thermistor of the existing protection for prismatic battery shown in Fig. 1, circuit of the invention
Protection device forms raised in the side of PTC heat-sensitive material layers 102 and forms the structure of corresponding recess in opposite side.Positioned at convex
The first electrode layer 101 for playing side is used to replace metal electrode cap of the prior art and be configured as battery just
Pole；And the second electrode lay 102 positioned at recess side is used to couple explosion-proof valve, and projection of the recess for accommodating explosion-proof valve
Part is with the effect of the middle circular hole of the existing PTC thermistor of replacement.The structure has both saved material, saves the peace of battery again
Technique is filled so as to greatly reduce the cost of battery production.
Fig. 4 shows the sectional view of battery according to another embodiment of the present invention.As shown in figure 4, the battery includes circuit
Protection device 11, explosion-proof valve 12, end cap 13, seal 14 and cell body 15.Wherein, circuit brake 11 has and for example schemed
Structure shown in 2.Generally, when mounted, circuit brake 11, explosion-proof valve 12, end cap 13, seal 14 are passed through into riveted
Mode and be coupled together forming circular electrode, then it is further fitted together with cell body 15.
As can be seen that the second electrode lay of circuit brake 11 is coupled to explosion-proof valve 12, have among the explosion-proof valve 12
The projection corresponding with the size of the thermal resistor layer center dant of circuit brake 11.
Although the present invention is elaborated and described in the drawings and foregoing description, it is considered that this is illustrated and description is to say
It is bright property and exemplary rather than restricted；The invention is not restricted to the above-mentioned embodiment of institute.
The those skilled in the art of those the art can be by studying specification, disclosure and accompanying drawing and appended
Claims, understand and implement other changes to the embodiment of disclosure.In the claims, word " comprising " is not arranged
Except other elements and step, and wording " one ", "one" be not excluded for plural number.In the practical application of invention, a part
The function of cited multiple technical characteristics in possible perform claim requirement.Any reference in claim should not be understood
For the limitation to scope.
Claims (7)
1. a kind of circuit brake, including：
One positive temperature coefficient heat-sensitive material layer, wherein the subregion of the positive temperature coefficient heat-sensitive material layer side have it is convex
Rise, and
One first electrode layer and a second electrode lay, wherein the first electrode layer covers the positive temperature coefficient heat-sensitive material layer
The surface of side, and the second electrode lay covers the surface of the positive temperature coefficient heat-sensitive material layer opposite side, wherein, it is described
First electrode layer is arranged to the positive pole of battery,
Wherein, the opposite side of the positive temperature coefficient heat-sensitive material layer has recess corresponding with the projection, and the recess is used
In the projection for accommodating explosion-proof valve.
2. circuit brake according to claim 1, it is characterised in that the shape of the positive temperature coefficient heat-sensitive material layer
For disc and the raised middle part for being located at the disc positive temperature coefficient heat-sensitive material layer.
3. circuit brake according to claim 1, it is characterised in that the positive temperature coefficient heat-sensitive material layer includes
Polymer thermo-sensitive material.
4. circuit brake according to claim 1, it is characterised in that the first electrode layer and the second electrode
Layer includes the one or more in nickel, corronil, stainless steel, iron.
5. a kind of battery, including the circuit brake according to any one of claim 1-4.
6. battery according to claim 5, it is characterised in that the projection is configured as the positive pole of the battery.
7. battery according to claim 5, it is characterised in that the battery also includes explosion-proof valve, the second electrode lay
It is coupled to the explosion-proof valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110301379.6A CN103035348B (en) | 2011-10-09 | 2011-10-09 | Circuit brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110301379.6A CN103035348B (en) | 2011-10-09 | 2011-10-09 | Circuit brake |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103035348A CN103035348A (en) | 2013-04-10 |
| CN103035348B true CN103035348B (en) | 2018-03-20 |
Family
ID=48022154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110301379.6A Expired - Fee Related CN103035348B (en) | 2011-10-09 | 2011-10-09 | Circuit brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103035348B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105990539A (en) * | 2015-01-30 | 2016-10-05 | 瑞侃电子(上海)有限公司 | End cover component, PTC element and rechargeable battery |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM255501U (en) * | 2003-09-17 | 2005-01-11 | Polytronics Technology Corp | Over-current protection device |
| CN101459230A (en) * | 2008-12-19 | 2009-06-17 | 惠州亿纬锂能股份有限公司 | Explosion prevention coiling type power lithium battery |
| CN101673828A (en) * | 2009-08-27 | 2010-03-17 | 惠州亿纬锂能股份有限公司 | Safe coiling type lithium battery |
-
2011
- 2011-10-09 CN CN201110301379.6A patent/CN103035348B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN103035348A (en) | 2013-04-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: Xuhui District Caohejing Development Zone of Shanghai City, Qinzhou road 200233 No. 307 Applicant after: Shanghai Li Tao Electronics Co., Ltd. Address before: Xuhui District Caohejing Development Zone of Shanghai City, Qinzhou road 200233 No. 307 Applicant before: Raychem Electronics (Shanghai) Co., Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180320 Termination date: 20191009 |