Method and apparatus for contact detection in battery packs (100) are disclosed. A battery pack (100), comprising: at least a first battery cell (210-1) and a second battery cell (210-2), the first battery cell having a first electrode (C) and a second electrode (D), and the second battery cell having a third electrode (C) and a fourth electrode (D); a power bar (202b) for coupling the second electrode (D) of the first battery cell (210-1) to the third electrode (C) of the second battery cell (210-2); a communication wire (206b) for signal communication between the first battery cell and the second battery cell, wherein the first battery cell comprises a supervisor (212-1), which comprises a voltage detector (312-1) to measure a first voltage between the first electrode and the second electrode of the first battery cell in a first state, and to measure a second voltage between the first electrode of the first battery cell and the communication wire in a second state; and a digital circuit (326-1) to compute a voltage difference between the first voltage and the second voltage, and to indicate degraded contact of the power bar if the voltage difference is out of a predetermined threshold range. A battery cell and a method for monitoring a battery pack are also disclosed.
METHOD AND APPARATUS FOR DETECTING FAULTY CONTACTS IN BATTERY PACKS
VERFAHREN UND VORRICHTUNG ZUR ERKENNUNG VON FEHLERHAFTEN KONTAKTEN IN BATTERIEPACKS
PROCÉDÉ ET APPAREIL POUR LA DÉTECTION DE DÉFAUTS DE CONTACT DANS LES BATTERIES
2019-10-16
Patent
Electronic Resource
English
IPC: | G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY |
METHOD AND APPARATUS FOR DETECTING DEGRADED CONTACTS IN BATTERY PACKS
European Patent Office | 2019
|METHOD FOR DETECTING A FAULTY CELL IN AN ELECTRIC BATTERY
European Patent Office | 2020
|Method for detecting a faulty connection of an auxiliary battery
European Patent Office | 2019
|