ENERGY STORAGE-BASED HEATING CONTROL METHOD, ENERGY STORAGE SYSTEM, AND PHOTOVOLTAIC ENERGY STORAGE SYSTEM

• Main Authors: CHEN, Aitang, WANG, Gang
• Format: Patent
• Language: Chinese; English; French
• Published: 13.06.2024
• Subjects: BASIC ELECTRIC ELEMENTS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SYSTEMS FOR STORING ELECTRIC ENERGY

The present invention relates to an energy storage-based heating control method, an energy storage system, and a photovoltaic energy storage system. The energy storage system comprises a controller and a plurality of battery packs connected in parallel. Each battery pack comprises a battery cell pack, a temperature sensing module, a temperature control module, and a BMS. The temperature sensing module is used for measuring the temperature of an energy storage battery; the temperature control module is used for heating the energy storage battery; and the BMS is used for sending to the controller a heating request and a SOC of the corresponding battery pack. The controller determines, according to a difference between a voltage of a direct-current bus and a charging voltage reference value of the energy storage system, the number of battery packs of which the temperature control modules can be turned on, and determines, according to the SOCs of the battery packs, the priorities of the battery packs of which the