Charge and discharge balancing circuit and LED drive system

A charge and discharge balancing circuit, comprising:

• multiple charge and discharge branches, each of which further comprises a charge circuit and a discharge circuit, the charge and discharge branches are each connected to an energy storage device, the energy storage device is connected to the corresponding charge circuit and the corresponding discharge circuit, the charge circuit of each charge and discharge branch is configured to connect to a charging power supply, and the discharge circuit of each charge and discharge branch is configured to connect a load;
• wherein each charge and discharge branch is configured to:
• determine whether to charge the connected energy storage device according to a voltage signal of the charging power supply and a voltage signal of the connected energy storage device;
• and
• determine whether to discharge to the connected load according to a voltage signal at a load connection terminal and the voltage signal of the connected energy storage device, wherein the load connection terminal is a common terminal between each discharge circuit and the load, and the voltage signal at the load connection terminal is a maximum value among the voltages transmitted to the load by the charge and discharge branches, respectively.