BATTERY SYSTEM OF VEHICLE, CHARGING AND DISCHARGING METHOD, AND VEHICLE

A battery system of a vehicle, a charging and discharging method, and a vehicle. The system includes an energy storage apparatus (1) and a direct current (DC) charging and discharging interface (2) that are connected to each other, where the energy storage apparatus (1) includes a first battery pack (17) and a second battery pack (18), and a first inter-battery switch (11) and a second inter-battery switch (12) are disposed between adjacent battery packs; an incoming line terminal (111) of the first inter-battery switch (11) is connected to a first electrode of the first battery pack (17), a first outgoing line terminal (112) of the first inter-battery switch (11) is connected to a first electrode of the energy storage apparatus (1), and a second outgoing line terminal (113) of the first inter-battery switch (11) is connected to a first outgoing line terminal (112) of the second inter-battery switch (12); a second outgoing line terminal (113) of the second inter-battery switch (12) is connected to a second electrode of the energy storage apparatus (1), and an incoming line terminal (111) of the second inter-battery switch (12) is connected to a second electrode of the second battery pack (18); and a first electrode of the DC charging and discharging interface (2) is connected to the first electrode of the energy storage apparatus (1), and a second electrode of the DC charging and discharging interface (2) is connected to the second electrode of the energy storage apparatus (1). The present disclosure resolves a problem that a battery pack of a high-voltage platform cannot be charged by using a low-voltage charging pile.