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1. 发明授权

US11574750B2 Over-current protection device 有权
公开(公告)号：US11574750B2
公开(公告)日：2023-02-07
申请号：US17407787
申请日：2021-08-20
申请人： Polytronics Technology Corp.
发明人： Hsiu Che Yen , Yung Hsien Chang , Zhen Yu Dong , Yao Te Chang , Fu Hua Chu
IPC分类号： H01C7/02 , H01C1/14
摘要： An over-current protection device comprises first and second electrode layers and a PTC material layer laminated therebetween. The PTC material layer comprises a polymer matrix, a conductive ceramic filler, a carbon-containing conductive filler, and an inner filler. The polymer matrix comprises a fluoropolymer having a melting point higher than 150° C. The inner filler is selected from one of aluminum nitride, silicon carbide, zirconium oxide, boron nitride, graphene, aluminum oxide, or any mixtures thereof, and comprises 2-10% by volume of the PTC material layer. The over-current protection device is able to mitigate negative temperature coefficient (NTC) behavior after trip of device, and achieves high hold current and high endurable power.

2. 发明授权

US10096407B2 Surface-mountable over-current protection device 有权
公开(公告)号：US10096407B2
公开(公告)日：2018-10-09
申请号：US15437975
申请日：2017-02-21
申请人： Polytronics Technology Corp.
发明人： Chun Teng Tseng , Wen Feng Lee , Yung Hsien Chang , Yao Te Chang
IPC分类号： H01C7/02 , H01C7/13
摘要： A surface mountable over-current protection device comprises a PTC material layer, first and second conductive layers, left and right electrodes, left and right conductive members, and left and right insulating members. The PTC material layer comprises a left notch at a left end and a right notch at a right end. The first conductive layer comprises a primary portion disposed on an upper surface of the PTC material layer and a secondary portion extending over the left notch, and the second conductive layer comprises a primary portion disposed on a lower surface of the PTC material layer and a secondary portion extending over the underside of the right notch. The left conductive member connects to the left electrode and the first conductive layer and isolates from the second conductive layer. The right conductive member connects to the right electrode and the second conductive layer and isolates from the first conductive layer. The left and right insulating members are disposed in the left and right notches, respectively. The PTC material layer is not in direct contact with the left and right conductive members, and the primary portion and the secondary portion of the first or second conductive layer have different thicknesses.

3. 发明授权

US11594877B2 Over-current protection device 有权
公开(公告)号：US11594877B2
公开(公告)日：2023-02-28
申请号：US17411966
申请日：2021-08-25
申请人： Polytronics Technology Corp.
发明人： Zhen Yu Dong , Yung Hsien Chang , Hsiu Che Yen , Yao Te Chang , Fu Hua Chu , Takashi Hasunuma
IPC分类号： H02H9/02 , H01C7/02 , H01C1/14
摘要： An over-current protection device comprises first and second electrode layers and a PTC material layer laminated therebetween. The PTC material layer comprises a polymer matrix and carbon black. The polymer matrix comprises a fluoropolymer having a melting point higher than 150° C. The carbon black is dispersed in the polymer matrix. A resistance jump Rjump_1000@16V/50A of the over-current protection device at 16V/50 A by 1000 cycles is 0.80-1.20. A resistance jump Rjump_1000@25V/50A of the over-current protection device at 25V/50 A by 1000 cycles is 0.90-1.30.

4. 发明授权

US09997906B1 Over-current protection device 有权
公开(公告)号：US09997906B1
公开(公告)日：2018-06-12
申请号：US15711546
申请日：2017-09-21
申请人： POLYTRONICS TECHNOLOGY CORP.
发明人： Hsiu Che Yen , Yung Hsien Chang , Zhen Yu Dong , Yao Te Chang , David Shau Chew Wang
IPC分类号： H01C7/10 , H02H9/02 , H01C7/02 , C09K5/14 , C08L27/16 , C08L23/06
CPC分类号： H02H9/026 , C08L23/06 , C08L27/16 , C08L2207/062 , C09K5/14 , H01C7/02 , H01C7/021 , H01C7/027 , H01C7/028 , H01C7/10 , H02H9/02
摘要： An over-current protection device comprises first and second electrode layers and a PTC material layer laminated therebetween. The PTC material layer has a resistivity less than 0.05 Ω·cm and comprises a polymer matrix, a conductive ceramic filler and a carbon-containing conductive filler. The polymer matrix comprises a fluoropolymer having a melting point higher than 150° C. and comprises 50-60% by volume of the PTC material layer. The conductive ceramic filler having a resistivity less than 500μΩ·cm is dispersed in the polymer matrix and comprises 40-45% by volume of the PTC material layer. The carbon-containing conductive filler is dispersed in the polymer matrix and comprises 0.5-5% by volume of the PTC material layer. At 25° C., a ratio of a hold current to an area of the over-current protection device is 0.21-0.3 A/mm2, and a ratio of an endurable power to the area of the over-current protection device is 4.8-7.2 W/mm2.

5. 发明授权

US11626220B2 Surface-mountable over-current protection device 有权
公开(公告)号：US11626220B2
公开(公告)日：2023-04-11
申请号：US17471795
申请日：2021-09-10
申请人： Polytronics Technology Corp.
发明人： Feng Ji Li , Yi-Hsuan Lee , Yung Hsien Chang
IPC分类号： H01C7/02 , H01C1/14
摘要： A surface-mountable over-current protection device comprises at least one PTC material layer, a first conductive layer, a second conductive layer, a first electrode, a second electrode, an insulating layer, and a cover layer. The PTC material layer comprises crystalline polymer and conductive fillers dispersed therein. The first conductive layer and the second conductive layer are disposed on a first surface and a second surface of the PTC material layer, respectively. The first electrode and the second electrode are electrically connected to the first conductive layer and the second conductive layer, respectively. The insulating layer is disposed between the first electrode and the second electrode for insulation. The cover layer includes a fluorine-containing polymer, and wraps around an entire outer surface of the surface-mountable over-current protection device.

6. 发明授权

US11018502B2 Cable with over-temperature protection 有权
公开(公告)号：US11018502B2
公开(公告)日：2021-05-25
申请号：US16290279
申请日：2019-03-01
申请人： Polytronics Technology Corp.
发明人： Zhen Yu Dong , Yung Hsien Chang , Hsiu Che Yen , Yao Te Chang , Pin Syuan Li
IPC分类号： H01C7/02 , H02H9/02 , H01R107/00 , H01R24/60 , H01H1/04 , H01C7/10 , H02H5/04
摘要： A cable comprises a power conductor, a data conductor and a first PTC device. The power conductor is configured to transmit electrical power between a source and a sink. The data conductor is configured to transmit data between the source and the sink. The first PTC device is coupled to the data conductor and its resistance increases drastically to decrease current flowing through the data conductor if a temperature of the first PTC device exceeds a first trip temperature. The first trip temperature is 55-80° C. The resistance of the PTC device is larger than 20 kΩ at 85° C. and larger than 80 kΩ at 100° C. A current flowing through the data conductor does not exceed 20 mA.

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