A photovoltaic energy storage system

By designing a shared energy storage module, inverter control module, and power metering module in the photovoltaic energy storage system, the pre-stored power is measured in real time and the power supply is controlled, which solves the problems of high cost and low efficiency of shared energy storage systems, and realizes fair and efficient use by multiple users and reduces operating costs.

CN122136910APending Publication Date: 2026-06-02QINGDAO HISENSE HITACHI AIR CONDITIONING SYST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
QINGDAO HISENSE HITACHI AIR CONDITIONING SYST
Filing Date
2024-11-29
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing third-party operation and management shared energy storage systems are costly and inefficient for multiple small users to share energy storage, and the user generation and consumption algorithms are complex.

Method used

Design a photovoltaic energy storage system, including a shared energy storage module, an inverter control module, and an energy metering module. By measuring the user's pre-stored electricity in real time, the system controls the user's power supply based on the pre-stored electricity, simplifies the algorithm, reduces operating costs, and improves operating efficiency.

Benefits of technology

It enables fair and efficient use of shared energy storage by multiple users, reduces operating costs, improves system stability and reliability, reduces energy waste, and enhances user experience and power supply efficiency.

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Abstract

This invention discloses a photovoltaic energy storage system, including a shared energy storage module, an inverter control module, and multiple energy metering modules. The shared energy storage module includes multiple energy storage batteries for storing electrical energy or supplying power to load modules. The inverter control module is connected to each photovoltaic power generation module, each load module, the shared energy storage module, and the power grid. It controls the electrical energy generated by each photovoltaic power generation module to supply power to each load module, store it in the shared energy storage module, or connect it to the power grid; the shared energy storage module supplies power to each load module. Each energy metering module is set up for each user, located between each user's photovoltaic power generation module, load module, and inverter control module, for detecting power generation and consumption. The inverter control module is configured to calculate absolute power generation or absolute power consumption based on power generation and consumption; accumulate pre-stored power based on absolute power generation and absolute power consumption; and control the power supply to each user based on the pre-stored power. This improves fairness and efficiency.
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