A charging control method, applied to a rectification device, wherein the method comprises: receiving, by the rectification device, first information from a charger, wherein the first information is used to indicate that a first charging pile is to charge a first vehicle, and wherein a charging device comprises the charger, and wherein the rectification device is connected to the charging device; obtaining, by the rectification device, electricity consumption load of a campus, wherein the electricity consumption load of the campus is electricity consumption load of a campus in which the rectification device and the charger are located; if the electricity consumption load of the campus is greater than a first load threshold, sending, by the rectification device, second information to the charger, wherein the second information is used to indicate that an energy storage device is to supply power to the charger; control, by the rectification device, the energy storage device to start so that the energy storage device supplies power to the charger; if the electricity consumption load of the campus is less than or equal to the first load threshold and is greater than or equal to a second load threshold, and if the power of the rectification device is less than the power required for charging the first vehicle, the rectification device sends fourth information to the charger, where the fourth information is used to indicate that the rectification device and the energy storage device are to supply power to the charger, wherein the electricity consumption load of the campus less than or equal to the first load threshold and greater than or equal to the second load threshold indicates that the electricity consumption load of the campus is greater than a load trough and is less than a load peak, and wherein the rectification device is configured to convert an alternating-current voltage into a direct-current voltage, control the energy storage device and the charging device, detect a power of the energy storage device, and communicate with a power distribution apparatus, and the charging device. receiving, by the rectification device, first information from a charger, wherein the first information is used to indicate that a first charging pile is to charge a first vehicle, and wherein a charging device comprises the charger, and wherein the rectification device is connected to the charging device; obtaining, by the rectification device, electricity consumption load of a campus, wherein the electricity consumption load of the campus is electricity consumption load of a campus in which the rectification device and the charger are located; if the electricity consumption load of the campus is greater than a first load threshold, sending, by the rectification device, second information to the charger, wherein the second information is used to indicate that an energy storage device is to supply power to the charger; control, by the rectification device, the energy storage device to start so that the energy storage device supplies power to the charger; if the electricity consumption load of the campus is less than or equal to the first load threshold and is greater than or equal to a second load threshold, and if the power of the rectification device is less than the power required for charging the first vehicle, the rectification device sends fourth information to the charger, where the fourth information is used to indicate that the rectification device and the energy storage device are to supply power to the charger, wherein the electricity consumption load of the campus less than or equal to the first load threshold and greater than or equal to the second load threshold indicates that the electricity consumption load of the campus is greater than a load trough and is less than a load peak, and wherein the rectification device is configured to convert an alternating-current voltage into a direct-current voltage, control the energy storage device and the charging device, detect a power of the energy storage device, and communicate with a power distribution apparatus, and the charging device.