CN102737798A - Battery protection PTC device - Google Patents
Battery protection PTC device Download PDFInfo
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- CN102737798A CN102737798A CN2011100831001A CN201110083100A CN102737798A CN 102737798 A CN102737798 A CN 102737798A CN 2011100831001 A CN2011100831001 A CN 2011100831001A CN 201110083100 A CN201110083100 A CN 201110083100A CN 102737798 A CN102737798 A CN 102737798A
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- battery
- ptc
- lead wire
- conductive lead
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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
Abstract
A battery protection PTC device comprises a PTC material, a first conductive wire, a second conductive wire and an insulating layer. One opening of the PTC material is in a groove shape; and a sandwich thin layer in the groove comprises the first conductive wire, the insulating layer and the second conductive wire, has a thickness less than 1 mm, and is used to achieve electrical connection during PTC device insertion between battery and battery and between battery and battery box spring.
Description
Technical field
The present invention relates to a kind of electronic device, in particular as PTC device and the single battery or the battery pack of using this device of circuit brake with positive temperature coefficient (positive temperature coefficient is called for short PTC) conductive polymer.
Background technology
PTC shows and a kind ofly in less relatively temperature range, causes the character that resistance value raises rapidly because temperature raises.Polymer substance with PTC character is generally used for preventing the protective device of current overload, circuit protection unit, heater and similar device.
The PTC device is contained in the device that shields in the battery pack in being.When flowing through big electric current or battery temperature in the element cell and rise, the hurried increase of resistance of the PTC device that is connected in series with battery significantly reduces the electric current in the battery of flowing through, with the protection battery.
At present, known battery protection is with the PTC device or be only applicable to the battery pack of battery straight line configuration, and it is horizontal perhaps to be only applicable to battery, the battery pack of configured in parallel.
For the former: this structure is applicable to installs the PTC device in the battery pack of battery straight line configuration.Yet horizontal at battery, in the battery pack that is arranged in parallel, the PTC device can not satisfiedly connect.
For the latter: battery is horizontal, configured in parallel, and the battery pack that the PTC device is installed each is on the books in patent CN1197534, CN1278366, but can not be applicable to the battery pack of battery straight line configuration.
Above-mentioned patent can not be applicable to the protection of single battery equally, and can not be used for the battery pack that existing equipment uses without transforming.
The battery pack that contains a plurality of batteries is generally used for electricity (or electronics) device, like camera, and video camera, instrument, portable phone, portable computer, electric automobile.
Summary of the invention
The purpose of this invention is to provide a kind of PTC device that single battery or battery pack shield that is used for; It can be applicable to single battery that existing various device uses or the battery pack of being made up of a plurality of batteries; And do not change the existing equipment structure and just can install quickly and easily; And guarantee that the little useful space occupies, can effectively stop possible short circuit simultaneously.
The objective of the invention is to realize like this: battery protection PTC device provided by the invention is connected with battery and is installed in the battery case of power consumption equipment, and said PTC device is by ptc material, first electrode, second electrode, insulating barrier composition.
This device feature is: ptc material is made up of the PTC conducting polymer, and an end opening is groove-like, and between first electrode and second electrode.First conductive lead wire is made up of the good conducting metal book layer that comprises first electrode and can be electrically connected with the negative pole of battery or the anodal reed of battery case or other electric device.Second conductive lead wire is made up of the good conducting metal book layer of open groove the centre that comprises second electrode; The width of groove and the degree of depth to be holding battery positive terminal or the battery case anode reed is as the criterion, and can realize being electrically connected with battery positive terminal or battery case anode reed or other electric device.Insulating barrier covers between first conductive lead wire middle part and the second conductive lead wire groove, and the semicircular of ptc material is inboard, thereby constitutes sandwich book layer at PTC device middle part, is used for isolating first conductive lead wire and second conductive lead wire.At groove part, the sandwich book layer thickness that is made up of first conductive lead wire, second conductive lead wire and insulating barrier is less than 0.5 millimeter, and influences installing and using original battery hardly after battery is connected.Opening is the groove-like ptc material and makes full use of spatial placement beyond positive terminal or the battery case anode reed, does not take battery the useful space is installed.
Description of drawings:
Fig. 1 is the schematic plan view of PTC device of the present invention
Fig. 2 is the A-A cutaway view that is used for PTC device of the present invention (Fig. 1)
In the accompanying drawing, label is as follows:
The 1PTC device, 2 sandwich book layers, 3 first electrodes, 4 second electrodes, 5PTC material, 6 insulating barriers, 7 grooves, 8 first conductive lead wires, 9 second conductive lead wires, 10 protective finish
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Fig. 1 is the schematic plan view of an embodiment of the preferred PTC device of the present invention, and Fig. 2 is the A-A cutaway view that is used for PTC device of the present invention (Fig. 1).
Wherein PTC device 1 comprises ptc material 5; First conductive lead wire 8 and second conductive lead wire 9 and insulating barrier 6; In the embodiment shown, insulating barrier 6 covers between first conductive lead wire middle part and the second conductive lead wire groove 7, and the semicircular of ptc material 5 is inboard; Thereby constitute sandwich book layer 2 at PTC device middle part, be used for isolating first conductive lead wire 8 and second conductive lead wire 9.Second electrode 4 in first electrode 3 in first conductive lead wire 8 and second conductive lead wire 9 is relative each other and be attached on upper and lower two surfaces of ptc material 5 formation PTC element.Visible by Fig. 1 and Fig. 2, present embodiment PTC device 1 is coin shape flat circular, and an end opening is groove-like.But the profile of PTC device 1 be except that being the flat circle, can also be for example rectangle or polygon, or circular, rectangle or polygonal combination.But no matter the sort of profile is all exceeded not exceed the battery bottom area.The outline edge of PTC device 1 scribbles protection book layer 10.
Described PTC device 1 has following characteristics:
(1) PTC device 1 is coin shape pancake; One end opening is groove-like; Constitute sandwich book layer 2 by first conductive lead wire 8, insulating barrier 6 and second conductive lead wire 9 in the groove; The thickness of sandwich book layer 2 is less than 1 millimeter, preferably less than 0.5 millimeter, and influences installing and using original battery hardly after battery is connected.
(2) insulating barrier 6; It is between first conductive lead wire, 8 middle parts and second conductive lead wire, 9 grooves; And the semicircular of ptc material 5 is inboard, thereby constitutes sandwich book layer 2 in PTC device 1 central slot bottom, is used for isolating first conductive lead wire 8 and second conductive lead wire 9; Sandwich book layer 2 is used for being implemented between battery and the battery, being electrically connected when inserting the PTC device between battery and the battery case reed.
(3) second conductive lead wires 9 comprise that second electrode 4 is made up of good conducting metal book layer; The width of second conductive lead wire, 9 central slot and the degree of depth to be holding battery positive terminal or the battery case anode reed is as the criterion, and can realize being electrically connected with battery positive terminal or battery case anode reed or other electric device.
(4) first conductive lead wires 8 comprise that first electrode 3 is made up of good conducting metal book layer, and can with negative pole or the anodal reed of battery case or the electrical connection of other electric device of battery.
(5) ptc material 5 is made up of the PTC conducting polymer, and an end opening is groove-like, and second electrode 4 in first electrode 3 in first conductive lead wire 8 and second conductive lead wire 9 each other relatively and be attached on upper and lower two surfaces of ptc material 5.
(6) opening is groove-like ptc material 5 and makes full use of spatial placement beyond positive terminal or the battery case anode reed, does not take battery the useful space is installed.
(7) profile of PTC device 1 can also be rectangle or polygon except that being the flat circle, or circular, rectangle or polygonal combination, but no matter the sort of profile is all exceeded not exceed the battery bottom area.
(8) outline edge of PTC device 1 scribbles protective finish 10, avoids the erosion of moisture and pernicious gas with protection PTC conducting polymer and the one or two electrode joint portion.
In PTC device 1, ptc material 5 is processed by the conducting polymer composition.First conductive lead wire 8 comprises first electrode 3 and second conductive lead wire 9, and to comprise second electrode 4 be to be paper tinsel or laminar good conductor metal.Particularly preferably be, when metal forming is used for electrode,, for example, through using electroconductive binder, electrode contact when dissolving with ptc material, or pass through the joint between pressure effect realization electrode and the ptc material through any proper method.
The thickness of insulating barrier 6 is enough to electricity and isolates first conductive lead wire and second conductive lead wire; Guarantee between first conductive lead wire and second conductive lead wire, not form short circuit, but should enough approach so that the PTC device reduces to minimum in required space when being fixed on battery positive terminal or the battery case anode reed.To guarantee that PTC device tight fit is on the reed of the positive terminal of battery or battery case negative pole.
Insulating barrier 6 can use polymer, can be also thermoplastic of thermosets.When insulating material was thermoplastic, its fusing point should be higher than the fusing point of PTC conducting polymer, thereby guaranteed when effect of PTC device and temperature rising, to prevent the insulating barrier distortion.And require the insulating barrier thermal coefficient of expansion close with the PTC conducting polymer.
From Fig. 1,2 visible, when using in a circuit according to the invention protector, can the most effectively utilize the space in the battery component, that is to say that PTC device 1 makes the length of battery component prolong the thickness of sandwich thin layer 2 a little along the short transverse of battery positive terminal.That is to say,, only increased the thickness of a sandwich thin layer, and the thickness of sandwich thin layer is less than 0.5 millimeter for original single battery or battery pack (no matter serial or parallel connection) install PTC protection device additional.
The outline edge of PTC device 1 scribbles protective finish 10, avoids the erosion of moisture and pernicious gas with protection PTC conducting polymer and the one or two electrode joint portion.
PTC device of the present invention as above-mentioned can be used as circuit brake in various circuit and battery component.
In this assembly, anode or battery case anode reed are arranged in the groove of PTC device.
Battery pack of the present invention can be that one or more batteries are arranged, if battery pack has a plurality of batteries, they can connect by serial or parallel connection.Realize the electrical connection between battery through PTC device of the present invention like this, and need not change any structure of battery case.
According to the present invention, the groove of PTC device is laid battery terminal or battery case reed, has effectively utilized recess space, therefore, can make the size that the battery component behind the PTC device is installed reduce to minimum.
But adopt the battery of the battery any kind of this device, for example NI-G, ni-mh, alkalescence or lithium battery.
When PTC device of the present invention was used for single battery or battery component, this device can the most effectively utilize battery positive terminal or battery case anode reed surrounding space, and the size of battery pack there is not expansion (only increasing about 0.1 to 0.5 millimeter) basically.
PTC device provided by the invention; Can be under the situation that does not change original electric or electronic installation, battery pack structure; Easily battery and PTC device of the present invention are installed in the battery case as placing a batteries; Battery is played a protective role, no matter and be single battery or lontitudinal series battery pack or laterally side by side series battery all can effectively protect, cause battery to damage even dangerous generations such as the blast of breaking to stop because the big electric current that fault or short circuit cause is overheated.
Claims (8)
1. battery protection PTC device, by ptc material (5), first conductive lead wire (8) and second conductive lead wire (9) and insulating barrier (6) constitute; It is characterized in that: PTC device (1) is coin shape pancake; One end opening is groove-like, constitutes sandwich book layer (2) by first conductive lead wire (8), insulating barrier (6) and second conductive lead wire (9) in the groove, and the thickness of sandwich book layer (2) is less than 1 millimeter; Preferably less than 0.5 millimeter, and after connecting, battery influences installing and using hardly to original battery.
2. the said battery protection PTC of root a tree name claim 1 device; It is characterized in that: insulating barrier (6), it is between first conductive lead wire (8) and second conductive lead wire (9), and the semicircular of ptc material (5) is inboard; Thereby constitute sandwich book layer (2) in PTC device 1 central slot bottom; Be used for isolating first conductive lead wire (8) and second conductive lead wire (9), sandwich book layer (2) is used for being implemented between battery and the battery, being electrically connected when inserting the PTC device between battery and the battery case reed.
3. the said battery protection PTC of root a tree name claim 1 device; It is characterized in that: second conductive lead wire (9) comprises that second electrode (4) is made up of good conducting metal book layer; The width of second conductive lead wire (9) central slot and the degree of depth to be holding battery positive terminal or the battery case anode reed is as the criterion, and can realize being electrically connected with battery positive terminal or battery case anode reed or other electric device.
4. the said battery protection PTC of root a tree name claim 1 device; It is characterized in that: first conductive lead wire (8) comprises that first electrode (3) is made up of good conducting metal book layer, and can realize being electrically connected with the negative pole of battery or the anodal reed of battery case or other electric device.
5. the said battery protection PTC of root a tree name claim 1 device; It is characterized in that: ptc material (5) is made up of the PTC conducting polymer; One end opening is groove-like, and second electrode (4) in first electrode (3) in first conductive lead wire (8) and second conductive lead wire (9) each other relatively and be attached on upper and lower two surfaces of ptc material (5).
6. the said battery protection PTC of root a tree name claim 1 device is characterized in that: opening is groove-like ptc material (5) and makes full use of spatial placement beyond positive terminal or the battery case anode reed, does not take battery the useful space is installed.
7. the said battery protection PTC of root a tree name claim 1 device; It is characterized in that: the profile of PTC device (1) can also be rectangle or polygon except that being the flat circle, or circular; Rectangle or polygonal combination, but no matter the sort of profile is all exceeded not exceed the battery bottom area.
8. the said battery protection PTC of root a tree name claim 1 device, it is characterized in that: the outline edge of PTC device (1) scribbles protective finish (10), avoids the erosion of moisture and pernicious gas with protection PTC conducting polymer and the one or two electrode joint portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100831001A CN102737798A (en) | 2011-04-02 | 2011-04-02 | Battery protection PTC device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100831001A CN102737798A (en) | 2011-04-02 | 2011-04-02 | Battery protection PTC device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102737798A true CN102737798A (en) | 2012-10-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100831001A Pending CN102737798A (en) | 2011-04-02 | 2011-04-02 | Battery protection PTC device |
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| CN (1) | CN102737798A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017219699A1 (en) * | 2016-06-23 | 2017-12-28 | 苏州安靠电源有限公司 | Security protection device for large capacity battery pack |
| WO2017219698A1 (en) * | 2016-06-23 | 2017-12-28 | 苏州安靠电源有限公司 | Cylindrical battery with external ptc structure |
-
2011
- 2011-04-02 CN CN2011100831001A patent/CN102737798A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017219699A1 (en) * | 2016-06-23 | 2017-12-28 | 苏州安靠电源有限公司 | Security protection device for large capacity battery pack |
| WO2017219698A1 (en) * | 2016-06-23 | 2017-12-28 | 苏州安靠电源有限公司 | Cylindrical battery with external ptc structure |
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Application publication date: 20121017 |