Battery array state parameter detection method, energy management system and energy storage system
A technology of battery array and energy storage system, applied in measurement devices, measurement of electrical variables, measurement of electricity, etc., can solve the problem of reducing calculation accuracy, reducing the usage rate and service life of battery arrays, and reducing the calculation accuracy of SOH and SOF, etc. question
Active Publication Date: 2020-07-31
CONTEMPORARY AMPEREX TECH CO
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[0004] However, in the existing energy storage system, all the battery arrays are in the high-current charging and discharging condition for a long time, that is to say, the battery arrays of the existing energy storage system are in the state of not resting for a long time, so the SOC Calculation can only rely on ampere-hour integration without the chance of static correction, which will reduce the calculation accuracy of SOC, and at the same time reduce the calculation accuracy of SOH and SOF, and also make the equalization effect worse, so it seriously reduces Battery Array Utilization and Lifespan
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[0029] In order to better understand the technical solutions of the present application, the embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.
[0030] It should be clear that the described embodiments are only some of the embodiments of the present application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.
[0031] Terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of this application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.
[0032] figure 1 It is a schematic diagram of an e...
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The invention provides a battery array state parameter detection method and device and an energy management system, and the method comprises the steps: setting a standing state of a battery array in an energy storage system as a non-standing state; configuring the total power of the power grid system to the PCSs in one-to-one correspondence with the battery arrays according to the pre-acquired charging and discharging capacities of the battery arrays in a descending order of the charging and discharging capacities; polling each PCS in the energy storage system to obtain the configured power ofeach PCS; and when it is detected that the configured power of the first PCS is 0 watt and the duration that the configured power of the first PCS is 0 watt is greater than or equal to a predetermined duration, setting the standing state of the first battery array connected to the direct current side of the first PCS to be a standing state. According to the invention, each battery array in the energy storage system can be polled to enter a standing state in the shortest time, and the calculation accuracy of the state parameters of the battery array is improved.
Description
【Technical field】 [0001] The present application relates to the technical field of batteries, and in particular to a detection method of battery array state parameters, an energy management system and an energy storage system. 【Background technique】 [0002] In recent years, due to the increasing maturity of large-capacity lithium battery technology, large-scale energy storage systems have been widely used in various power station projects, such as: energy storage systems in new energy wind power generation systems to stabilize fluctuations, in large power stations Applications such as frequency modulation and peak shaving and valley filling in commercial buildings. In the above application scenarios, there is a common requirement for the energy storage system, that is, the energy storage system needs to be charged and discharged for a long time without standing still. Due to the characteristics of polarization voltage in charging and discharging of lithium batteries, the b...
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Inventor 高锦凤刘超洋
Owner CONTEMPORARY AMPEREX TECH CO