Charging system design strategy. The charging system is designed with fast and slow charging functions. Since the IPE integrates OBC, the slow charging interface is directly connected to the IPE; the fast charging is connected to the battery, and the battery module is charged through the BDU internal relay.
Battery Design Strategies. The BDU is integrated inside the battery, and the main positive and negative relays and fast charging relays are connected in parallel to realize the switching between driving and fast charging. Based on comprehensive consideration of cost and safety, a low-voltage MSD is used to replace the traditional high-voltage MSD.
The high-voltage topology diagram of product car A, the advantage of this solution is that it adopts the integrated design solution of electric drive and IPE, which reduces the cost of high-voltage components, saves the number of high-voltage wires and connectors, and reduces the layout space and quality of the entire vehicle.