Battery power supply device, vehicle and relay fault detection method

• Main Author: CHAO PENGJUN
• Format: Patent
• Language: Chinese; English
• Published: 08.12.2023
• Subjects: BASIC ELECTRIC ELEMENTS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SYSTEMS FOR STORING ELECTRIC ENERGY; TRANSPORTING; VEHICLES IN GENERAL

The invention discloses a battery power supply device, a vehicle and a relay fault detection method, the battery power supply device comprises at least two battery packs and a control module; the battery pack comprises a battery pack, a first main positive relay and a first main negative relay; the at least two battery packs are connected in series and used for supplying power to external equipment; the first main positive relay and the first main negative relay are arranged in the battery pack, the first main positive relay is connected between the positive electrode of the battery pack and the positive electrode of the battery pack, and the first main negative relay is connected between the negative electrode of the battery pack and the negative electrode of the battery pack; the control module is used for controlling the first main positive relay to be connected or disconnected according to the output of the battery pack and controlling the first main negative relay to be connected or disconnected. The fir