Method for detecting storage battery fault, ECU, system and vehicle

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Method for detecting storage battery fault, ECU, system and vehicle

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SONG ZENGFENG / GAO XIN / XU YONGXIN

The invention discloses a method, an ECU and a system for detecting a fault of a storage battery and a vehicle. The system comprises a generator, the storage battery and the ECU. The positive input end of the generator is connected with the positive electrode of the storage battery. The negative input end of the generator is connected with the negative electrode of the storage battery. The positive electrode of the storage battery is connected with the first end of the ECU, and the negative electrode of the storage battery is connected with the second end of the ECU; the generator is used for charging the storage battery at constant voltage; the ECU is used for acquiring the voltage at the two ends of the storage battery during charging, determining that the voltage when the voltage at the two ends of the storage battery does not rise any more is an end voltage and the voltage when the storage battery starts to be charged is an initial voltage, and determining the charging rate of charging the storage battery according to the end voltage, the initial voltage and the charging duration; and detecting a fault of the storage battery according to the charging rate and a preset rate. In the vehicle, the ECU can detect whether the storage battery breaks down or not based on the charging rate of the storage battery, and the service requirement is met.

本申请公开了一种检测蓄电池故障的方法、ECU、系统及车辆，该系统包括：发电机、蓄电池和电子控制单元ECU；发电机的正输入端与蓄电池的正极连接，发电机的负输入端与蓄电池的负极连接；蓄电池的正极与ECU的第一端连接，蓄电池的负极与ECU的第二端连接；发电机，用于给蓄电池恒压充电；ECU，用于在充电时获取蓄电池两端的电压，确定蓄电池两端的电压的不再升高时的电压为结束电压，给蓄电池开始充电时的电压为起始电压，根据结束电压、起始电压和充电时长，确定给蓄电池充电的充电速率；根据充电速率和预设速率，检测蓄电池故障。在该车辆中，ECU能够基于蓄电池的充电速率，对该蓄电池是否存在故障进行检测，满足业务需求。

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Title :

Method for detecting storage battery fault, ECU, system and vehicle

Additional title:

一种检测蓄电池故障的方法、ECU、系统及车辆

Contributors:

SONG ZENGFENG (author) / GAO XIN (author) / XU YONGXIN (author)

Publication date :

2022-07-05

Type of media :

Patent

Type of material :

Electronic Resource

Language :

Chinese

Classification :

IPC:

B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR