BATTERY PACK

• Main Author: LU, Chuntao
• Format: Patent
• Language: English; French; German
• Published: 09.09.2020
• Subjects: BASIC ELECTRIC ELEMENTS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; CURRENT COLLECTORS; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; GENERATION; LINE CONNECTORS; 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

A battery pack (100) includes a case (1), a first set of battery cells (21) and a second set of battery cells (22) received in the case (1), a circuit board (3), and a main power output interface (6). The first set of battery cells (21) and the second set of battery cells (22) can be connected in series or in parallel, and output two kinds of working voltage through the main power output interface (6). The battery pack (100) further includes an extended power output interface (4; 4'; 4") and a switch (5) provided between the first set of battery cells (21) and the second set of battery cells (22). The battery pack (100) can output a third voltage for an external device through the extended power output interface (4; 4'; 4") when the first set of battery cells (21) and the second set of battery cells (22) are connected in series through the switch (5). It's safe and reliable when charging the external device.