Energy storage heating control method, energy storage system and light storage system

• Main Authors: WANG GANG, CHEN AITANG
• Format: Patent
• Language: Chinese; English
• Published: 02.05.2023
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; BASIC ELECTRIC ELEMENTS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; 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 invention relates to an energy storage heating control method, an energy storage system and a light storage system. The energy storage system comprises a controller and a plurality of battery packs connected in parallel. The battery pack comprises a battery cell pack, a temperature sensing module, a temperature control module and a BMS. Wherein the temperature sensing module is used for detecting the temperature of the energy storage battery, the temperature control module is used for heating the energy storage battery, and the BMS is used for sending a heating request and the SOC of the corresponding battery pack to the controller. The controller determines the number of the battery packs capable of starting the temperature control module according to the difference value between the direct current bus voltage and the charging voltage reference value of the energy storage system, and determines the priority of the battery packs starting the temperature control module according to the SOC of the battery p