Energy storage system and method for generating temperature rise curve of battery cell and method for generating temperature difference curve of battery cell

By building a temperature rise simulation environment in the energy storage system, the temperature rise of the battery cell is calculated using the iteration step size and real-time status, and the temperature rise curve of the battery cell is generated. This solves the problems of high cost and extreme condition testing, and realizes safety boundary assessment and temperature control strategy optimization.

CN115859644BActive Publication Date: 2026-06-05SUNGROW POWER SUPPLY CO LTD
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Patent Information

Application Number
CN202211594436.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-12-13
Publication Date
2026-06-05
Estimated Expiration
2042-12-13

AI Technical Summary

Technical Problem

Existing technologies for testing the temperature rise of battery cells in energy storage containers are costly and cannot test extreme operating conditions.

Method used

By building a temperature rise simulation environment for the energy storage system, temperature rise simulation is performed using an iterative step size to generate cell temperature rise curves. Combined with real-time air conditioning and fan status, the instantaneous comprehensive heat consumption of the cell is calculated, and the cell temperature rise change is evaluated.

Benefits of technology

It reduces testing costs, enables the assessment of cell temperature rise changes under different environments and temperature control strategies, determines the operational safety boundaries of energy storage systems, and provides guidance for safe operation.

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Abstract

The application discloses an energy storage system and a cell temperature rise curve generation method and a cell temperature difference curve generation method thereof. The cell temperature rise curve generation method comprises the following steps: after a temperature rise simulation environment of a cell to be generated with a temperature rise curve in an energy storage system is built, and a target iteration number and an iteration step length of the temperature rise simulation environment are determined; the temperature rise simulation environment is used to perform temperature rise simulation on the cell to be generated with the temperature rise curve according to the iteration step length until the iteration number reaches the target iteration number, so that a temperature rise curve of the cell to be generated with the temperature rise curve is generated; wherein, in each temperature rise simulation process, an instantaneous comprehensive heat loss of the cell to be generated with the temperature rise curve is determined according to a real-time air conditioner simulation state, a real-time fan simulation state and a cell type of the cell to be generated with the temperature rise curve, and a cell temperature rise increment of the cell to be generated with the temperature rise curve is calculated based on the instantaneous comprehensive heat loss, so as to evaluate temperature rise change conditions of the cell in the energy storage system under various states, and test cost is reduced.
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