Current sensor and battery comprising such a current sensor

US11088399B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Andreas Ruehle · Bietigheim-Bissingen, DE
• Chrysanthos Tzivanopoulos · Großbettlingen, DE
• Eduard Reimer · Fellbach, DE
• Karsten Thoelmann · Heubach, DE
• Kuen Cheuk Leung · Rochester Hills, US
• Lisa Lorenz · Stuttgart, DE
• Patrick Kaupp · Stuttgart, DE
• Sven Bergmann · Stuttgart, DE

Key dates

• Filing date: Nov 18, 2016
• Grant date: Aug 10, 2021
• Expiry date: May 22, 2038

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E60/10
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The invention relates to a current sensor comprising an electric conductor (10), through which a first current (I) can flow parallel to a first direction (R1) and which comprises three regions (21, 22, 23) immediately following on from each other in the first direction (R1). A middle region (22) of the three regions (21, 22, 23) comprises a conductor cross-sectional area that is smaller than a conductor cross-sectional area of each of the two outer regions (21, 23) of the three regions (21, 22, 23). A voltage sensor of the current sensor is designed to measure a first voltage between the two terminals (41, 42) thereof. The first voltage is the same as a voltage applied to a measuring region (22, 25) at least partially coinciding with the middle region (22). An evaluation unit of the current sensor is designed to determine an existing current value of the first current (I) in accordance with an existing voltage value of the first voltage and a pre-defined resistance value of a first resistance of the measuring region (22, 25).