Mixed protective switch and manufacturing method thereof

A protection switch and hybrid technology, applied in the field of sensing, can solve the problems of expensive, large size and inapplicability of bimetal protectors, and achieve the effect of enhancing reliability and life, small size, and suppressing switching arcs.

Active Publication Date: 2014-11-19
JIANGSU ZHONGKE GUOTENG SCI & TECH
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  • Description
  • Claims
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Problems solved by technology

However, the design scheme combining IC and MOSFET is too expensive, and the tra

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  • Mixed protective switch and manufacturing method thereof
  • Mixed protective switch and manufacturing method thereof
  • Mixed protective switch and manufacturing method thereof

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[0062] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and not intended to limit the scope of the present invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily obscuring the concept of the present invention.

[0063] figure 1 It is a circuit diagram of a hybrid protection switch according to a preferred embodiment of the present invention.

[0064] Such as figure 1 As shown, the hybrid protection switch of the present invention includes a first protection switch SW1 and a second protection switch SW2 connected in parallel to each other, for providing protection to the battery C. Among them, the first protection switch SW1...

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Abstract

The invention discloses a mixed protective switch and a manufacturing method of the mixed protective switch. The mixed protective switch comprises a first protective switch body provided with a double-metal suspension plate (11), and a second protective switch body provided with a PTC element (7). The double-metal suspension plate (11) is provided with a supporting suspension plate body (110) and a metal suspension plate body (111) attached to the supporting suspension plate body (110), wherein the supporting suspension plate body (110) and the metal suspension plate body (111) have different heat expansion coefficients. The first switch protective switch body and the second protective switch body are connected in parallel, a conductive branch circuit of a parallel-connection structure is formed by the metal suspension plate body (111), and an impedance branch circuit of a parallel-connection structure is formed by the PTC element (7). According to the mixed protective switch, the switching arc generated in an overcurrent state and an overheated state can be obviously restrained, the reliability of the switch is improved, the service life of the switch is prolonged, and the mixed protective switch and the manufacturing method of the mixed protective switch can be widely applied to protection circuits of electronic equipment batteries.

Description

technical field [0001] The invention relates to the field of sensing technology, in particular to micro-electro-mechanical (MEMS) system technology, in particular to a hybrid protective switch combining a micro-mechanical bimetallic thermal actuator and a functional material positive temperature coefficient resistance sensor and a preparation method thereof. Background technique [0002] With the development of technologies such as thin film transistors and integrated circuits, electronic equipment is developing towards integration, portability, and miniaturization. The development of portable electronic devices has led to the development of portable power sources or batteries. During the use and discharge of the battery, the temperature of the battery will rise, and even accidents such as burning or explosion may occur. With the popularization of portable electronic devices, especially the development of personal wearable devices, the over-current and over-temperature prot...

Claims

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Application Information

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IPC IPC(8): H02H7/18
Inventor 赵湛毛光普
Owner JIANGSU ZHONGKE GUOTENG SCI & TECH
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