The design and function of BYD battery box mainly include the following aspects :
Structure of the battery box : the battery box design of BYD includes a body of the box, which is formed with a cavity for holding the battery. The side wall of the box body is provided with an inlet nozzle and an outlet nozzle, which are respectively formed on the side wall of the box body. The minimum distance between the inlet nozzle and the bottom edge of the side wall is different from the minimum distance between the outlet nozzle and the bottom edge of the side wall, so as to ensure the correct installation of the inlet and outlet water nozzle .
Waterproof and insulation design : The design of the battery box pays attention to waterproof and insulation. The battery box is installed under the bottom plate of the vehicle. The lower shell is made of cast aluminum or steel plate, the upper shell is made of fiberglass steel, and there is a sealant between the upper and lower shells. The battery box is sealed with a rating of IP67 or above, which can effectively prevent dust from entering and soak in water 1 meter deep for 30 minutes .
Electrical connection : In terms of electrical connection, BYD’s battery system uses a busbar to connect the battery module and the distribution box. The bus bar is connected to the output pole of the battery module by bolts. The PDB is integrated with the battery management system, including the main contactor, current sensor, and fuse components .
Thermal Management and safety : The battery management system is responsible for the thermal management and safety of the battery. Efficient electrochemical reaction and thermal management through precision processes ensure battery stability and safety .
Design features and application scenarios of BYD battery box :
Blade battery design : The “blade battery” design adopted by BYD HanEV is flat like a blade, which saves space and improves energy density. It is suitable for high performance electric vehicles .
Compatibility design : The blade battery system is compatible with BEV (pure electric vehicle) and PHEV (plug-in hybrid electric vehicle) designs, ensuring a wide range of applicability .
These design features and technological innovations make BYD’s battery box a significant advantage in the field of electric vehicles, not only improving the vehicle’s endurance and performance, but also ensuring the safety and reliability of the battery.
The common battery modules:
