Battery, terminal, and charging system

A device, wherein the device comprises a battery, wherein the battery comprises a battery charging port, a battery discharging port, a battery negative port, a protection integrated circuit, at least one control switch, and an electrochemical cell, wherein the battery charging port and the battery discharging port are ports independent of each other, and wherein:

• the battery charging port is connected to a first electrode of the electrochemical cell via the at least one control switch;
• a second electrode of the electrochemical cell is connected to the battery negative port;
• the protection integrated circuit is connected in parallel to electrodes of the electrochemical cell;
• and
• the battery charging port is connected by using a charging connection cable and the battery discharging port is connected by using a discharging connection cable, wherein the charging connection cable is of a higher specification than that of the discharging connection cable, and wherein the charging connection cable of a charging path is comparatively wider and thicker than the discharging connection cable of a discharging path to reduce cable impedance.

A device, wherein the device comprises a battery, wherein the battery comprises a battery charging port, a battery discharging port, a battery negative port, a protection integrated circuit, a control switch, and an electrochemical cell, wherein the battery charging port and the battery discharging port are ports independent of each other, and wherein:

• the battery charging port is connected to a first end of the control switch, and a second end of the control switch is connected to a positive electrode of the electrochemical cell;
• a negative electrode of the electrochemical cell is connected to the battery negative port;
• the protection integrated circuit is connected in parallel to two ends of the electrochemical cell, wherein the protection integrated circuit is further connected to a third end of the control switch;
• and
• the battery discharging port is connected to the first end of the control switch.

A terminal, wherein the terminal comprises a charging port, a load, a charging and discharging circuit of the terminal, and a device, and wherein:

• the charging and discharging circuit comprises a detection circuit, a protection circuit, and a power conversion circuit;
• the detection circuit is connected to the charging port of the terminal, wherein the detection circuit is further connected to the protection circuit, and wherein the protection circuit is further connected to a battery charging port;
• the power conversion circuit is connected to the load, wherein the power conversion circuit is further connected to a battery discharging port, and wherein:
• when the terminal is in a charging state, a charging current enters the terminal through the charging port of the terminal, and enters an electrochemical cell through the detection circuit, the protection circuit, and a control switch;
• and
• the device comprises a battery, wherein the battery comprises the battery charging port, the battery discharging port, a battery negative port, a protection integrated circuit, the control switch, and the electrochemical cell, wherein:
• the battery charging port and the battery discharging port are ports independent of each other;
• the battery charging port is connected to a first electrode of the electrochemical cell, wherein a second electrode of the electrochemical cell is connected to a first end of the control switch, and wherein a second end of the control switch is connected to the battery negative port;
• the protection integrated circuit is connected in parallel to electrodes of the electrochemical cell, wherein the protection integrated circuit is further connected to a third end of the control switch;
• the battery discharging port is connected to the first electrode of the electrochemical cell;
• and
• the battery charging port is connected by using a charging connection cable and the battery discharging port is connected by using a discharging connection cable, wherein the charging connection cable is of a higher specification than that of the discharging connection cable, and wherein the charging connection cable of a charging path is comparatively wider or thicker than a discharging cable of a discharging path to provide reduced cable impedance.