Battery system, method for diagnosing a battery system, and motor vehicle

US12199317B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Berengar Krieg · Gerlingen, DE
• Chrysanthos Tzivanopoulos · Großbettlingen, DE
• Johannes Swoboda · Stuttgart, DE
• Thomas Schaedlich · Kornwestheim, DE

Key dates

• Filing date: Nov 19, 2021
• Grant date: Jan 14, 2025
• Expiry date: Jul 8, 2043

Classification

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

Abstract

A battery system having a battery pack with a negative pole, a positive pole and a battery cell, a coupling network having a first negative terminal and a first positive terminal, a pack voltage divider, and a coupling voltage divider. The first positive terminal is connectable to the positive pole via a switch. Optionally, the first negative terminal is connectable to the negative pole via a switch. The pack voltage divider includes a two resistors connected between the positive pole and a first reference point. A negative pack measurement resistor and a negative sub-pack measurement resistor are dis-connectable from the negative pole or the first reference point via a switch. A positive coupling measurement resistor and a positive sub-coupling measurement resistor are connected between the first positive terminal and the first reference point. Two resistors are connected between the first negative terminal and the first reference point.