overcurrent protection device

A protection device and overcurrent technology, which is applied in the direction of circuit devices, emergency protection circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, etc., and can solve problems such as reducing current values

Inactive Publication Date: 2017-12-29
POLYTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when an over-current or over-temperature phenomenon occurs in a circuit or battery, its resistance value will instantly increase to a high resistance state, that is, a trip phenomenon occurs, thereby reducing the current flow rate. current value

Method used

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Embodiment Construction

[0047] In order to make the above and other related technical contents, features and advantages of the present invention more comprehensible, relevant embodiments are specifically cited below and described in detail as follows.

[0048] figure 2 A three-dimensional schematic diagram of an overcurrent protection device according to a first embodiment of the present invention is shown, which is applied to overcurrent protection of a secondary battery. The overcurrent protection device 20 mainly uses a lead frame 21 as a supporting structure for the electronic components contained therein, and a covering member 25 is provided on the relevant electronic component cover for protection. The lead frame 21 includes a carrying portion 211 and two bent ends 212 and 213 connected to the carrying portion 211 to form an accommodating space. The height and width of the accommodating space can be adjusted according to the electronic components, so as to accommodate various active and passi...

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Abstract

The invention discloses an overcurrent protection device applied to a secondary battery, which includes a lead frame, an IC element and a PTC element. The lead frame has a bearing part and bent two ends, and forms an accommodating space. Two ends of the lead frame are respectively electrically connected to the positive and negative poles of the secondary battery. The bearer includes a plurality of blocks. Both the IC element and the PTC element are arranged on the bearing part and in the accommodating space. The PTC element includes a first electrode and a second electrode, and the first electrode and the second electrode are electrically connected to different blocks in the bearing part.

Description

technical field [0001] The present invention relates to an overcurrent protection device, in particular to an overcurrent protection device applied to a secondary battery. Background technique [0002] Since the resistance of conductive composite materials with positive temperature coefficient (Positive Temperature Coefficient; PTC) characteristics is sensitive to temperature changes, it can be used as a material for current or temperature sensing elements, and has been widely used in overcurrent protection elements. or circuit components. Because the resistance of the PTC conductive composite material can maintain an extremely low value at normal temperature, the circuit or battery can operate normally. However, when an over-current or over-temperature phenomenon occurs in a circuit or battery, its resistance value will instantly increase to a high resistance state, that is, a trip phenomenon occurs, thereby reducing the current flow rate. current value. [0003] The cur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H7/18H01M10/42
CPCH02H9/044H01L2224/48247H01L2924/19105H02H9/026
Inventor 沙益安曾郡腾陈以诺
Owner POLYTRONICS TECH
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