Sensor unit and airtightness inspection device
US10514315B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2016 |
| Grant date | Dec 24, 2019 |
| Priority date | — |
| Expiry date | Dec 1, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A lithium ion battery (11) that is a test object is housed in a vacuum chamber (14). An initial exhaust pipe (47) and an inspection exhaust pipe (51) are connected to the upper portion of the vacuum chamber (14). The inside of the vacuum chamber (14) is subjected to an initial exhaust through the initial exhaust pipe (47) to lower the pressure inside the vacuum chamber (14) to an inspection pressure (Pe). Thereafter, an inspection exhaust is performed through the inspection exhaust pipe (51). A sensor unit (16) is interposed in the inspection exhaust pipe (51). Exhaust gas passing through the inspection exhaust pipe (51) flows into the sensor unit (16) from an inlet port, and is caused to flow perpendicularly toward the sensor face of a gas sensor by a nozzle provided inside the sensor unit (16). The exhaust gas passes through the inside of the gas sensor, and is discharged to outside of the sensor unit (16) from an exhaust port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.