Overcurrent protector with adjustable and monitorable rated current and preparation method thereof
A technology of overcurrent protector and rated current, which is applied in the direction of overcurrent protection, automatic disconnection emergency protection device, electromagnetic measurement device, etc., which can solve the problem of inability to monitor the quality of bimetallic strain gauges in real time and difficult miniaturization , intelligent scene, unable to control and other problems, to achieve the effect of small loss, simple principle and structure, and reduce production cost
Active Publication Date: 2021-01-22
SOUTHEAST UNIV
View PDF3 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] Common overcurrent protectors on the market generally use bimetallic strain gauges with different thermal expansion coefficients as sensitive elements, and use bimetallic strain gauges to deform due to temperature rise, causing the switch to be disconnected and then protecting the circuit or system. According to its It can be seen from the working principle that the rated current of the common overcurrent protector is customized after the preparation is completed, which cannot be adjusted, and the quality of the bimetallic strain gauge cannot be monitored in real time during use. The packaging process often results in a large volume, which is difficult to apply in miniaturization and intelligent scenarios
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0048] The present invention will be further explained below in conjunction with the accompanying drawings.
[0049] An overcurrent protector with adjustable rated current and monitorable, such as Figure 1~Figure 3 As shown, it includes: a first substrate 1, a cantilever beam 2, a first insulating layer 3, a second insulating layer 4, a first electrode 5, a second electrode 6, a third electrode 7, a lead wire 8, a bonding layer 9, Second substrate 10 , open cavity 11 and pad 12 . An open cavity 11 is formed on the upper surface of the first substrate 1 . The cantilever beam 2 is a suspended part facing the open cavity 11, and as a part of the first substrate 1, one end is fixed, which is called the fixed end, and the other end is suspended, which is called the suspended end. The first insulating layer 3 covers the upper surface of the first substrate 1 . The second insulating layer 4 covers the upper surface of the first insulating layer 3 . The first electrode 5 is divid...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses an overcurrent protector with adjustable and monitorable rated current and a preparation method thereof. The overcurrent protector comprises a first substrate, and a second substrate, wherein an open cavity is formed in the first substrate, and a cantilever beam, a first insulating layer and a second insulating layer are arranged on on the first substrate; two layers of thefirst electrode are symmetrically arranged on the second substrate and the second insulating layer respectively and located at the fixed end of the cantilever beam; two layers of the second electrodeare symmetrically arranged on the second substrate and the second insulating layer respectively and located in the middle of the cantilever beam; and two layers of the third electrode are symmetrically arranged on the second substrate and the second insulating layer respectively and located at the suspended end of the cantilever beam. The open cavity, the cantilever beam, the first electrode, thesecond electrode and the third electrode are arranged by utilizing an MEMS body processing and bonding process, so that the rated current of the overcurrent protector is adjustable and can be monitored, and the reliability of a circuit or a system is improved.
Description
technical field [0001] The invention relates to an overcurrent protector and a preparation method thereof. Background technique [0002] In order to prevent the circuit or system from being damaged due to overcurrent, it is necessary to introduce an overcurrent protector. When the current flowing through the circuit or system exceeds the rated value, the overcurrent protector will be triggered to work, and its internal switch will be disconnected to prevent accidents. Since overcurrent is often accompanied by abnormal temperature rise, overcurrent protector is a device sensitive to temperature and / or current, which can control and protect thermal overload caused by temperature and current in circuits or systems. Overcurrent protectors are widely used in temperature and / or current control and protection of household appliances, instruments, power converters and motors. [0003] Common overcurrent protectors on the market generally use bimetallic strain gauges with different...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H02H3/08H02H3/02H02H3/00G01B7/16
CPCG01B7/22H02H3/006H02H3/02H02H3/08
Inventor 黄晓东张志强张鹏飞郑从兵
Owner SOUTHEAST UNIV