Heater, oxygen sensor, engine, and vehicle
By employing a parallel circuit and a porous structure in the heating unit design of the oxygen sensor, the problems of heat accumulation and circuit failure in the ceramic heater circuit were solved, achieving uniform current distribution and improved heater stability.
CN122120969APending Publication Date: 2026-05-29BYD CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BYD CO LTD
- Filing Date
- 2024-11-28
- Publication Date
- 2026-05-29
AI Technical Summary
Technical Problem
The ceramic heater circuit in the oxygen sensor is prone to heat buildup, which can lead to electrical breakdown and circuit failure. In addition, the limited space in the circuit layout increases the risk of ceramic cracking.
Method used
The first heating unit and the second heating unit are connected in parallel. The parallel circuit design, combined with the porous structure, ensures uniform current distribution, avoids heat accumulation, and improves thermal shock resistance.
Benefits of technology
It reduces current demand, avoids heat buildup and circuit damage, enhances the stability and thermal shock resistance of the heater, and prevents circuit failure and ceramic cracking.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN122120969A_ABST
Abstract
The application relates to a heater, an oxygen sensor, an engine and a vehicle. The heater comprises a first heating unit and a second heating unit; the first heating unit is adapted to be connected to an external power source; the second heating unit is arranged in parallel with the first heating unit and is adapted to be connected to the external power source; wherein at least one of the first heating unit and the second heating unit comprises a porous structure. The application aims to solve the technical problem that the internal circuit of the heater of the oxygen sensor in the prior art is easy to gather heat, leading to electric breakdown, and even circuit failure.
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