CN109687392A - A kind of transient diode mould group with overcurrent and overheat protector - Google Patents
A kind of transient diode mould group with overcurrent and overheat protector Download PDFInfo
- Publication number
- CN109687392A CN109687392A CN201910115796.8A CN201910115796A CN109687392A CN 109687392 A CN109687392 A CN 109687392A CN 201910115796 A CN201910115796 A CN 201910115796A CN 109687392 A CN109687392 A CN 109687392A
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- CN
- China
- Prior art keywords
- pin
- transient diode
- thermal fuse
- overcurrent
- ptc thermistor
- 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.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
- H02H5/042—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature using temperature dependent resistors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0061—Details of emergency protective circuit arrangements concerning transmission of signals
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D8/00—Diodes
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Emergency Protection Circuit Devices (AREA)
- Fuses (AREA)
- Thermistors And Varistors (AREA)
Abstract
本发明公开了一种具有过流和过温保护的瞬态二极管模组，包括PTC热敏电阻、温度保险丝、TVS瞬态二极管和外壳；PTC热敏电阻的两侧设置有第一引脚和第二引脚，TVS瞬态二极管的前后两侧分别设置有上电极片和下电极片，温度保险丝的内部设置有第一温度保险丝，第一温度保险丝的两端设置有伸出温度保险丝的第三引脚和第四引脚；所述温度保险丝的第三引脚与上电极片电性连接，所述PTC热敏电阻的第二引脚和下电极片电性连接。本发明在异常浪涌电流电压达到TVS瞬态二极管的承受极限时，PTC热敏电阻异常发热迅速传导到第一温度保险丝，从而使第一温度保险丝迅速动作并断开电路，实现对瞬态二极管的保护功能。
The invention discloses a transient diode module with overcurrent and overtemperature protection, comprising a PTC thermistor, a thermal fuse, a TVS transient diode and a casing; the two sides of the PTC thermistor are provided with first pins and The second pin, the front and rear sides of the TVS transient diode are respectively provided with an upper electrode piece and a lower electrode piece, the inside of the thermal fuse is provided with a first thermal fuse, and both ends of the first thermal fuse are provided with a second thermal fuse extending out of the thermal fuse. Three pins and a fourth pin; the third pin of the thermal fuse is electrically connected with the upper electrode piece, and the second pin of the PTC thermistor is electrically connected with the lower electrode piece. In the present invention, when the abnormal surge current and voltage reach the withstand limit of the TVS transient diode, the abnormal heat generated by the PTC thermistor is rapidly transmitted to the first thermal fuse, so that the first thermal fuse acts quickly and disconnects the circuit, thereby realizing the protection of the transient diode. protection function.
Description
Technical field
The present invention relates to a kind of diode modules, specifically a kind of transient diode mould with overcurrent and overheat protector
Group.
Background technique
TVS is the abbreviation of Transient Voltage Suppressor, it is a kind of votage limit type over-voltage protector of diode.When
When the two poles of the earth of TVS are by reversed transient state high energy impact events, it can be with the speed of 10 grade of minus 12 seconds by the high resistant of its two interpolar
Resistance is Low ESR, absorbs up to thousands of watts of surge power, makes the voltage clamp of two interpolars in a predetermined value, effectively protect
The precision components in electronic circuit are protected from the damage of surge pulse.Its main feature has: fast response time (ps grades), wink
State power is big, leakage current is low, breakdown voltage deviation small (≤5%), clamping ability are strong etc..The resistance to Surge suppression voltage capability of TVS is special
By force, pulse power is from several hectowatts to tens kilowatts, and pulse peak current is from several peaces to several hundred peaces.
TVS is now widely used for computer system, communication apparatus, AC/DC power supply, automobile, electric ballast, household
Electric appliance, instrument and meter (kilowatt-hour meter), RS232/422/423/485, I/O, common mode/differential mode protection, RF coupling/IC driving receive
The every field such as protection, the inhibition of motor electromagnetic wave interference, audio/video input, sensor/speed changer, industry control circuit.
But short-circuit failure can occur in use for Transient Suppression Diode, once short-circuit failure occurs, release
High-energy the electronic equipment of protection can usually be damaged, this is the main problem that current TVS application is encountered.
Summary of the invention
The transient diode mould group with overcurrent and overheat protector that the purpose of the present invention is to provide a kind of, it is above-mentioned to solve
The problem of being proposed in background technique.
To achieve the above object, the invention provides the following technical scheme:
A kind of transient diode mould group with overcurrent and overheat protector, including PTC thermistor, Thermal Cutoffs, TVS transient state
Diode and shell；The PTC thermistor, Thermal Cutoffs, TVS transient diode are set to the inside of shell, PTC temperature-sensitive
The two sides of resistance are provided with the first pin and second pin, and the front and rear sides of TVS transient diode, which are respectively arranged with, powers on pole piece
With lower electrode slice, Thermal Cutoffs is fixedly mounted on lower electrode slice, and Thermal Cutoffs is internally provided with the first Temperature protection
Silk, the both ends of the first Thermal Cutoffs are provided with the third pin and the 4th pin for stretching out Thermal Cutoffs；The third pin
It is electrically connected with pole piece is powered on, the second pin and lower electrode slice are electrically connected.
As a further solution of the present invention: the shell be inner hollow body structure, shell by plastics, ceramics,
The insulating materials such as bakelite are made.
As the present invention further scheme: be additionally provided on the shell for by PTC thermistor, the first temperature
Fuse and TVS transient diode are fixed on the cover board of interior of shell.
As further scheme of the invention: first pin and the 4th pin are worn upwardly through the pilot hole of cover board
Out.
As further scheme of the invention: the second pin and lower electrode slice are electrically connected mode as welding or riveting
It connects, the third pin is welded or riveted with pole piece electric connection mode is powered on.
As the present invention further scheme: the Thermal Cutoffs is internally provided with heat-sensitive alloy and special fluxing
Agent is enclosed with special fluxing agent on heat-sensitive alloy, and the melting range of heat-sensitive alloy is usually 60 DEG C -230 DEG C, special fluxing agent
Softening temperature point is usually 60-100 DEG C.
As further scheme of the invention: the high Heat Conduction Material of filling thermal coefficient, Heat Conduction Material in the shell
For heat conductive silica gel or heat-conduction epoxy resin.
As further scheme of the invention: the inside of the shell is additionally provided with second temperature fuse, the second temperature
It spends fuse and instruction or remote signalling circuit is electrically connected, the both ends of second temperature fuse are provided with two remote signalling pins, remote signalling
Pin is pierced by upwardly through the pilot hole of cover board.
Compared with prior art, the beneficial effects of the present invention are:
1, the present invention is by integrated PTC thermistor, the first Thermal Cutoffs and TVS transient diode, in abnormal surge current
When voltage reaches the power limit of TVS transient diode, PTC thermistor abnormal heating is transmitted to rapidly the first Temperature protection
Silk realizes the defencive function to transient diode so that the first Thermal Cutoffs be made to act simultaneously disconnecting circuit rapidly；
2, it is additionally provided with second temperature fuse, when abnormal surge current voltage reaches the power limit of TVS transient diode,
PTC thermistor abnormal heating is transmitted to second temperature fuse, and second temperature fuse disconnects instruction or remote signalling circuit, thus
The maintenance personnel replacement of prompt has the transient diode mould group of overcurrent and overheat protector, the reliability of lifting means and longevity
Life.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the first embodiment of the transient diode mould group with overcurrent and overheat protector.
Fig. 2 is the outside drawing of the first embodiment in the transient diode mould group with overcurrent and overheat protector.
Fig. 3 is the structural schematic diagram of second of embodiment in the transient diode mould group with overcurrent and overheat protector.
Fig. 4 is the outside drawing of second of embodiment in the transient diode mould group with overcurrent and overheat protector.
In figure: the first pin of 1-, 2- second pin, 3-PTC thermistor, 4- Thermal Cutoffs, 5- Thermal Cutoffs are close
Envelope resin, 6- third pin, the 4th pin of 7-, under 8- electrode slice, 9-TVS transient diode, 10- power on pole piece, 11- shell,
12- cover board, 13- second temperature fuse.
Specific embodiment
The technical solution of the patent is explained in further detail With reference to embodiment.
Embodiment 1
A kind of transient diode mould group with overcurrent and overheat protector referring to FIG. 1-2, including PTC thermistor 3, temperature
Fuse 4, TVS transient diode 9 and shell 11；The shell 11 is the body structure of inner hollow, and shell 11 is by plastics, pottery
The insulating materials such as porcelain, bakelite are made, and the PTC thermistor 3, Thermal Cutoffs 4, TVS transient diode 9 are set to shell 11
Inside, the two sides of PTC thermistor 3 are provided with the first pin 1 and second pin 2, the front and rear sides of TVS transient diode 9
It is respectively arranged with lower electrode slice 8 and powers on pole piece 10, Thermal Cutoffs 4 is fixedly mounted on lower electrode slice 8, Thermal Cutoffs 4
Be internally provided with the first Thermal Cutoffs, the both ends of the first Thermal Cutoffs, which are provided with, to be stretched out the third of Thermal Cutoffs 4 and draws
Foot 6 and the 4th pin 7；
The second pin 2 is electrically connected with lower electrode slice 8, and the third pin 6 is electrically connected with pole piece 10 is powered on, to make
PTC thermistor 3, the first Thermal Cutoffs and TVS transient diode 9 are electrically connected integrally, and are formed with overcurrent and mistake
The transient diode mould group of temperature protection；
It is additionally provided on the shell 11 for consolidating PTC thermistor 3, the first Thermal Cutoffs 4 and TVS transient diode 9
Cover board 12 inside shell 11, first pin 1 and the 4th pin 7 are pierced by from the pilot hole of cover board 12, as entire
The input of mould group, output end；
Specifically, in the present embodiment, the sides of electrical connection such as second pin 2 is welded or riveted with lower 8 electric connection mode of electrode slice
Formula, the third pin 6 and to power on 10 electric connection mode of pole piece be the electric connection modes such as to weld or rivet, to make each pin
Between and connection relationship between pin and electrode slice it is more stable.
Specifically, the shell of Thermal Cutoffs 4 can be the plastic shells such as PBT, nylon in the present embodiment, it is also possible to
The insulation crust of the other materials such as ceramics, bakelite, the oral area of Thermal Cutoffs 4 are filled with for carrying out to the first Thermal Cutoffs
The sealing resin 5 of sealing.
Embodiment 2
A kind of transient diode mould group with overcurrent and overheat protector referring to FIG. 1-2, including PTC thermistor 3, temperature
Fuse 4, TVS transient diode 9 and shell 11；The shell 11 is the body structure of inner hollow, and shell 11 is by plastics, pottery
The insulating materials such as porcelain, bakelite are made, and the PTC thermistor 3, Thermal Cutoffs 4, TVS transient diode 9 are set to shell 11
Inside, the two sides of PTC thermistor 3 are provided with the first pin 1 and second pin 2, the front and rear sides of TVS transient diode 9
It is respectively arranged with lower electrode slice 8 and powers on pole piece 10, Thermal Cutoffs 4 is fixedly mounted on lower electrode slice 8, Thermal Cutoffs 4
Be internally provided with the first Thermal Cutoffs, the both ends of the first Thermal Cutoffs, which are provided with, to be stretched out the third of Thermal Cutoffs 4 and draws
Foot 6 and the 4th pin 7；
The second pin 2 is electrically connected with lower electrode slice 8, and the third pin 6 is electrically connected with pole piece 10 is powered on, to make
PTC thermistor 3, the first Thermal Cutoffs and TVS transient diode 9 are electrically connected integrally, and are formed with overcurrent and mistake
The transient diode mould group of temperature protection；
It is additionally provided on the shell 11 for consolidating PTC thermistor 3, the first Thermal Cutoffs 4 and TVS transient diode 9
Cover board 12 inside shell 11, first pin 1 and the 4th pin 7 are pierced by from the pilot hole of cover board 12, as entire
The input of mould group, output end；
Specifically, in the present embodiment, the sides of electrical connection such as second pin 2 is welded or riveted with lower 8 electric connection mode of electrode slice
Formula, the third pin 6 and to power on 10 electric connection mode of pole piece be the electric connection modes such as to weld or rivet, to make each pin
Between and connection relationship between pin and electrode slice it is more stable.
Specifically, the shell of Thermal Cutoffs 4 can be the plastic shells such as PBT, nylon in the present embodiment, it is also possible to
The insulation crust of the other materials such as ceramics, bakelite, the oral area of Thermal Cutoffs 4 are filled with for carrying out to the first Thermal Cutoffs
The sealing resin 5 of sealing.
The present embodiment difference from example 1 is that, the high Heat Conduction Material of filling thermal coefficient in the shell 11,
Heat Conduction Material is heat conductive silica gel, heat-conduction epoxy resin etc., so as to reach TVS transient diode 9 in abnormal surge current voltage
When power limit, 3 abnormal heating of PTC thermistor is transmitted to rapidly the first Thermal Cutoffs, to make the first Thermal Cutoffs
Movement and disconnecting circuit rapidly realize the defencive function to transient diode.
Embodiment 3
Please refer to Fig. 3-4, a kind of transient diode mould group with overcurrent and overheat protector, including PTC thermistor 3, temperature
Fuse 4, TVS transient diode 9 and shell 11；The shell 11 is the body structure of inner hollow, and shell 11 is by plastics system
At the PTC thermistor 3, Thermal Cutoffs 4, TVS transient diode 9 are set to the inside of shell 11, PTC thermistor 3
Two sides be provided with the first pin 1 and second pin 2, the front and rear sides of TVS transient diode 9, which are respectively arranged with, powers on pole piece 10
With lower electrode slice 8, Thermal Cutoffs 4 is fixedly mounted on lower electrode slice 8, and Thermal Cutoffs 4 is internally provided with the first temperature
Fuse, the both ends of the first Thermal Cutoffs are provided with the third pin 6 and the 4th pin 7 for stretching out Thermal Cutoffs；
The second pin 2 is electrically connected with lower electrode slice 8, and the third pin 6 is electrically connected with pole piece 10 is powered on, to make
PTC thermistor 3, the first Thermal Cutoffs and TVS transient diode 9 are electrically connected integrally, and are formed with overcurrent and mistake
The transient diode mould group of temperature protection；
It is additionally provided on the shell 11 for PTC thermistor 3, the first Thermal Cutoffs and TVS transient diode 9 is fixed
Cover board 12 inside shell 11, first pin 1 and the 4th pin 7 are pierced by upwardly through the pilot hole of cover board 12, as
The input of entire mould group, output end；
Specifically, in the present embodiment, the sides of electrical connection such as second pin 2 is welded or riveted with lower 8 electric connection mode of electrode slice
Formula, the third pin 6 and power on 10 electric connection mode of pole piece be the electric connection modes such as weld or rivet, thus make pin with
Connection relationship between electrode slice is more stable.
Specifically, Thermal Cutoffs 4 can be the plastic shells such as PBT, nylon in the present embodiment, it is also possible to ceramics, electricity
The insulation crust of the other materials such as wood, the oral area of Thermal Cutoffs 4 are filled with for being sealed to the first Thermal Cutoffs
Sealing resin 5.
The present embodiment difference from example 1 is that, the inside of the shell 11 be additionally provided with second temperature insurance
Silk 13, second temperature fuse 13 and instruction or remote signalling circuit are electrically connected, and the both ends of second temperature fuse 13 are provided with two
Zhi Yaoxin pin, remote signalling pin are pierced by upwardly through the pilot hole of cover board 12, reach TVS transient state two in abnormal surge current voltage
When the power limit of pole pipe 9, PTC thermistor abnormal heating is transmitted to the first Thermal Cutoffs 4 and second temperature fuse 13,
First Thermal Cutoffs acts and disconnects main circuit, and second temperature fuse 13 disconnects instruction or remote signalling circuit, to prompt to tie up
Repair the transient diode mould group that maintenance personnel's replacement has overcurrent and overheat protector, the reliability of lifting means and service life.
The preferred embodiment of the patent is described in detail above, but this patent is not limited to above-mentioned embodiment party
Formula within the knowledge of one of ordinary skill in the art can also be under the premise of not departing from this patent objective
It makes a variety of changes.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910115796.8A CN109687392A (en) | 2019-02-15 | 2019-02-15 | A kind of transient diode mould group with overcurrent and overheat protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910115796.8A CN109687392A (en) | 2019-02-15 | 2019-02-15 | A kind of transient diode mould group with overcurrent and overheat protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109687392A true CN109687392A (en) | 2019-04-26 |
Family
ID=66195844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910115796.8A Pending CN109687392A (en) | 2019-02-15 | 2019-02-15 | A kind of transient diode mould group with overcurrent and overheat protector |
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| Country | Link |
|---|---|
| CN (1) | CN109687392A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021012938A1 (en) * | 2019-07-19 | 2021-01-28 | 厦门赛尔特电子有限公司 | Transient voltage suppressor having temperature protection |
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| CN1925072A (en) * | 2005-09-03 | 2007-03-07 | 徐忠厚 | Piezoresistance with alloy type temperature fuse |
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| CN202121318U (en) * | 2011-06-30 | 2012-01-18 | 厦门赛尔特电子有限公司 | Over-voltage protection module of direct current circuit |
| CN102403706A (en) * | 2011-11-17 | 2012-04-04 | 溧阳杰敏电子有限公司 | Resettable fuse type self-protective overvoltage/overcurrent protection device |
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| CN107799501A (en) * | 2017-11-08 | 2018-03-13 | 电安科技（嘉兴）有限公司 | The Transient Voltage Suppressor of fuse protection |
| CN109103840A (en) * | 2018-08-17 | 2018-12-28 | 上海长园维安电子线路保护有限公司 | A kind of overvoltage and overcurrent integral type protective element |
| CN209344764U (en) * | 2019-02-15 | 2019-09-03 | 漳州雅宝电子有限公司 | A kind of transient diode mould group with overcurrent and overheat protector |
-
2019
- 2019-02-15 CN CN201910115796.8A patent/CN109687392A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1925072A (en) * | 2005-09-03 | 2007-03-07 | 徐忠厚 | Piezoresistance with alloy type temperature fuse |
| US20080130180A1 (en) * | 2006-12-05 | 2008-06-05 | Ferraz Shawmut S.A. | Circuit protection device |
| CN201853463U (en) * | 2010-09-25 | 2011-06-01 | 惠州泰科立集团股份有限公司 | Power supply device of LCM testing system |
| CN202121318U (en) * | 2011-06-30 | 2012-01-18 | 厦门赛尔特电子有限公司 | Over-voltage protection module of direct current circuit |
| CN102403706A (en) * | 2011-11-17 | 2012-04-04 | 溧阳杰敏电子有限公司 | Resettable fuse type self-protective overvoltage/overcurrent protection device |
| CN203398746U (en) * | 2013-08-16 | 2014-01-15 | 深圳市中鹏电子有限公司 | Signal surge protector capable of failure indication and remote signaling |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021012938A1 (en) * | 2019-07-19 | 2021-01-28 | 厦门赛尔特电子有限公司 | Transient voltage suppressor having temperature protection |
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Address after: No.6, Hongjian Road, jiaomei Town, Taiwan investment zone, Zhangzhou City, Fujian Province, 363000 Applicant after: Zhangzhou Yabao Electronics Co.,Ltd. Address before: 363007 Hongjian Industrial Zone, Longchi Development Zone, Zhangzhou City, Fujian Province Applicant before: ZHANGZHOU YABAO ELECTRONIC Co.,Ltd. |
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20190426 |