A charging pile energy storage structure power supply monitoring method

Abstract

The present invention provides a charging pile energy storage structure power supply monitoring method. The energy storage stack is set as two energy storage units, the first energy storage module and the second energy storage module, which helps the two energy storage units to store differences The amount of electricity can be transferred from a relatively high-energy energy storage unit to a relatively low-energy energy storage unit, and the open circuit voltage and terminal voltage of the energy storage unit can be obtained, as well as the current formed by the charge transfer between the energy storage units, and the energy storage unit can be calculated. The internal resistance of the energy storage unit; the control unit obtains the current of the transferred power between the two energy storage units through the sampling voltage and the resistance value of the sampling resistance module, and calculates the internal resistance of the energy storage unit through the current, so that it can be obtained according to the charging data of the unit, etc. Effective voltage, combined with the stored unit charging data, safe discharge depth, remaining power EV and other parameter data to calculate the safe charging times, and compare it with the number of charging piles to obtain the maximum number of charging piles that can be used normally, and realize the optimization of the charging pile energy storage structure usage management.

Description

technical field

[0001] The invention relates to the technical field of charging piles, in particular to the application field of energy storage control of charging piles. Background technique

[0002] At present, the power supply terminals of each charging pile of the charging station are connected in parallel with the bus terminal, and the bus terminal is connected to the power input. In order to ensure the energy storage capacity, a plurality of batteries are connected in series and parallel to form an energy storage stack, and the whole is connected in parallel with the bus terminal. The monitoring of the capacity or remaining power of the energy storage stack or battery is very important for the use time of the charging pile. Since there is a unified correspondence between the open circuit voltage of a specific battery and its remaining power, but during use, due to the uncertainty of the use of the charging pile, the battery The self-discharge is uncertain, the interna...

Examples

Embodiment Construction

[0026] The technical solutions in the present utility model are further described below with reference to the accompanying drawings and embodiments.

[0027] A method for monitoring power supply of a charging pile energy storage structure, comprising the following steps:

[0028] A. Set up the first energy storage module and the second energy storage module that can independently supply power to the charging pile; during the period of supplying power from the mains, the first energy storage module and the second energy storage module are powered by the charging pile at the same time. A power supply connection to the charging pile;

[0029] B. Record the parameter data and unit charging data of the first energy storage module and the second energy storage module; the parameter data includes discrete data SOC of the battery capacity corresponding to the open circuit voltage of several batteries, and the residual voltage EV of the safe depth of discharge; The unit charging data ...

technical field

[0001] The invention relates to the technical field of charging piles, in particular to the application field of energy storage control of charging piles. Background technique

[0002] At present, the power supply terminals of each charging pile of the charging station are connected in parallel with the bus terminal, and the bus terminal is connected to the power input. In order to ensure the energy storage capacity, a plurality of batteries are connected in series and parallel to form an energy storage stack, and the whole is connected in parallel with the bus terminal. The monitoring of the capacity or remaining power of the energy storage stack or battery is very important for the use time of the charging pile. Since there is a unified correspondence between the open circuit voltage of a specific battery and its remaining power, but during use, due to the uncertainty of the use of the charging pile, the battery The self-discharge is uncertain, the interna...

Examples

Embodiment Construction

[0026] The technical solutions in the present utility model are further described below with reference to the accompanying drawings and embodiments.

[0027] A method for monitoring power supply of a charging pile energy storage structure, comprising the following steps:

[0028] A. Set up the first energy storage module and the second energy storage module that can independently supply power to the charging pile; during the period of supplying power from the mains, the first energy storage module and the second energy storage module are powered by the charging pile at the same time. A power supply connection to the charging pile;

[0029] B. Record the parameter data and unit charging data of the first energy storage module and the second energy storage module; the parameter data includes discrete data SOC of the battery capacity corresponding to the open circuit voltage of several batteries, and the residual voltage EV of the safe depth of discharge; The unit charging data ...

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