Breaker, safety circuit, and secondary battery pack
JP2025005860A5Pending Publication Date: 2025-10-15BOURNS KK
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Patent Information
- Application Number
- JP2023106264
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-06-28
- Publication Date
- 2025-10-15
AI Technical Summary
Technical Problem
Conventional breakers with a positive temperature coefficient (PTC) thermistor are prone to popping out of their recess and deforming the movable piece when subjected to a large impact, causing the movable contact to separate from the fixed contact.
Method used
The breaker design includes a movable piece with a first protrusion that projects towards the thermally responsive element, suppressing the movement of the PTC thermistor during impacts, and a thermally responsive element that transitions between conductive and disconnected states to manage current flow.
Benefits of technology
The design effectively suppresses the movement of the PTC thermistor during impacts, maintaining the integrity of the contact separation mechanism and ensuring reliable current management.
✦ Generated by Eureka AI based on patent content.
Abstract
To provide a breaker capable of suppressing the movement of a positive temperature coefficient thermistor even when the breaker receives a large shock.SOLUTION: A breaker 1 includes a fixed piece 2 having a fixed contact 21, a movable piece 4 having an elastic portion 44 and a movable contact 41, a thermally responsive element 5 that deforms with temperature change, and a PTC thermistor 6. The movable piece 4 has a main body portion 45 constituting the elastic portion 44, and a first protrusion 46 protruding from the main body portion 45 toward the thermally responsive element 5. The first protrusion 46 overlaps with the PTC thermistor 6 in a plan view.SELECTED DRAWING: Figure 1
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