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Circuit protective element, protective circuit and electrical or electronic equipment

A circuit protection and component technology, which is applied in the field of circuit protection components, can solve the problems of poor protection performance of circuit protection components, and the protection components cannot be reused well, and achieves the effect of being conducive to reuse.

Active Publication Date: 2013-06-26
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0006] In order to solve the technical problem that the protection performance of the existing circuit protection components is poor and the protection components cannot be reused well, the present invention provides a circuit that has a thorough protection effect on the circuit, is reusable and can quickly sense the abnormal temperature of the battery pack protection element

Method used

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  • Circuit protective element, protective circuit and electrical or electronic equipment
  • Circuit protective element, protective circuit and electrical or electronic equipment
  • Circuit protective element, protective circuit and electrical or electronic equipment

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Embodiment Construction

[0016] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0017] The invention provides a circuit protection element, such as Figure 1 to Figure 4 As shown in , it includes a PTC element 1, a first metal lead 21, a second metal lead 22 with a contact 5, a two-way memory alloy lead 3 and an insulating shell 4; the first metal lead 21 is set On the upper surface of the PTC element 1, the two-way memory alloy lead 3 is arranged on the lower surface of the PTC element 1; the contact 5 on the second metal lead 22 is located on the insulating shell 4, and the double The lead sheet 3 of the memory alloy is in contact with the contac...

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Abstract

The invention provides a circuit protective element which comprises a PTC (Positive Temperature Coefficient) element 1, a first metal guide sheet 21, a second metal guide sheet 22 with a contact 5, a round trip memory alloy guide sheet 3 and an insulated shell 4, wherein the first metal guide sheet 21 is arranged on the upper surface of the PTC element 1, the round trip memory alloy guide sheet 3 is arranged on the lower surface of the PTC element 1, the contact 5 on the second metal guide sheet 22 is arranged on the insulated shell 4, the round trip memory alloy guide sheet 3 and the contact 5 are contacted, and the insulated shell 4 is arranged outside the PTC element 1, the metal guide sheet 2 and the round trip memory alloy guide sheet 3. The circuit protective element plays a role in protecting the circuit thoroughly, can be recycled, and can rapidly sense the normal temperature of a battery pack.

Description

technical field [0001] The invention relates to a circuit protection element, in particular to a circuit protection element with a PTC element, a protection circuit containing the circuit protection element and electric / electronic equipment. Background technique [0002] PTC is a positive temperature coefficient thermistor. PTC components can not only sense the abnormal current in the circuit, but also change from self-heating to a high-resistance state for over-current protection; it can also sense the abnormal temperature caused by the poor heat dissipation of the battery pack. , is triggered by the external high temperature and turns into a high-resistance state for over-temperature protection. As a recoverable circuit protection component, PTC element plays an important role in the circuit board of the battery pack. It becomes irreplaceable in the over-current and over-temperature protection of the battery pack. [0003] In recent years, with the improvement of the per...

Claims

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Application Information

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IPC IPC(8): H01C7/02H01H37/32
Inventor 刘倩倩陈炎
Owner BYD CO LTD
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