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Multi-battery scheduling method and system based on state of charge balance approximation algorithm

A state-of-charge and scheduling method technology, applied in charge balancing circuits, arrangement of multiple synchronous batteries, secondary batteries, etc., can solve problems such as unbalanced operation, prolong time, affect battery life, etc. Balanced, time-reducing effect

Active Publication Date: 2020-09-29
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

None of the existing state-of-charge equalization strategies can guarantee the degree of balance during the equalization process, and there are still unbalanced operations
This prolongs the time required to equalize the state of charge and also affects the life of the battery

Method used

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  • Multi-battery scheduling method and system based on state of charge balance approximation algorithm
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  • Multi-battery scheduling method and system based on state of charge balance approximation algorithm

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Embodiment Construction

[0039] As shown in Table 1, this embodiment takes a multi-battery system composed of 11 battery units as the test object, and implements the state-of-charge balancing scheduling technology according to the operating data of the system for one day.

[0040] Table 1

[0041]

[0042] Such as figure 1 As shown, this embodiment includes the following steps:

[0043] Step 1. According to the state of charge of the multi-battery monitored by the multi-battery energy management system, an evaluation index for the imbalance degree of the state of charge of the multi-battery is formulated;

[0044] Step 2. Propose a state-of-charge equilibrium approximation algorithm, and formulate a power scheduling strategy for energy storage batteries with the goal of minimizing the unbalanced state of charge of multiple batteries.

[0045] This example is based on the 24-hour SOC change of a multi-battery energy storage system composed of 11 battery units. Figure 4 shown. Figure 4 It is sh...

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Abstract

The invention discloses a multi-battery dispatching method and system based on a state-of-charge balanced approach algorithm. The charge state of each battery system is collected and obtained according to a multi-battery management system, an unbalance coefficient evaluation function corresponding to each battery is established, and then an energy storage battery power scheduling policy is established by using the state-of-charge unbalance minimum of each battery as a target through the state-of-charge balanced approach algorithm, so that optimized dispatching is realized. A plurality of batteries with different initial charge states are balanced to operate in a unified charge state through the state-of-charge balanced approach algorithm, the time required for unifying the charge states ofdifferent batteries can be reduced, and the balance degree of multi-battery system operation is improved.

Description

technical field [0001] The invention relates to a technology in the field of battery management, in particular to a multi-battery scheduling method and system based on a state of charge equilibrium approximation algorithm. Background technique [0002] In recent years, battery energy storage systems have been widely used in ship power systems. Multi-battery energy storage system is one of the current research hotspots. The power allocation strategy based on state-of-charge balance scheduling is the key to multi-battery energy storage technology. None of the existing state-of-charge equalization strategies can guarantee the degree of balance during the equalization process, and there are still unbalanced operations. This prolongs the time required to equalize the state of charge and also affects the life of the battery. Therefore, it is a technology that urgently needs to be researched to propose a measurement method for the balance degree of the battery state of charge an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/42H02J7/00
CPCH01M10/4207H01M2010/4271H02J7/0014Y02E60/10
Inventor 樊飞龙郑晓冬邰能灵黄文焘吴攀王俊
Owner SHANGHAI JIAO TONG UNIV
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