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energy storage system

An energy storage system and battery system technology, applied in the field of energy storage systems, can solve problems such as insufficiently clear instructions of energy storage systems, safety performance damage, battery system safety, etc., to avoid excessive charging/discharging current, prolong service life, Broaden the effect of application scenarios

Active Publication Date: 2022-05-10
ZHEJIANG CHINT ELECTRIC CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current home energy storage system has a variety of applications, and MOS is mostly used as switch control. In the case of high current, the burnout protection function is prone to failure, and there is no alarm and no effective measures are taken, resulting in dangers such as combustion and explosion. In addition, the current products and The PCS did not communicate effectively, and did not take safer measures for the battery system when multi-level alarms occurred, resulting in damage to the life and safety performance of the battery itself, which eventually led to danger.
Moreover, the existing energy storage system is not clear enough in its operating state and after a failure occurs, which is not conducive to the maintenance of the user's use
In addition, the existing home energy storage system does not detect the battery system when it is powered on, and it is directly powered on, which will cause damage to the battery system

Method used

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Examples

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Embodiment approach

[0050] The following is an implementation mode for multiple battery management systems BMS to perform master / slave identification when the battery system includes multiple sets of battery modules: a simulated host in multiple battery management system BMS sends a message to other battery management system BMS through the network connection Test signal, if the battery management system BMS is greater than or equal to the predetermined timeout time and fails to receive the data sent by other battery management system BMS through the connection network, then the battery management system BMS determines that there is no battery management system BMS host, then the battery management system The system BMS is automatically identified as the master and communicates with the energy storage inverter PCS, and other battery management system BMS are automatically identified as slaves. When the battery system increases or decreases battery modules, repeat the above process.

[0051] The b...

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Abstract

The present invention relates to the field of energy storage technology, in particular to an energy storage system, including a battery system and an energy storage inverter PCS. The battery system includes a battery module and a battery management system BMS. The battery management system BMS automatically performs master-slave identification. Each battery management system BMS detects the status of the corresponding battery module and sends it to the host battery management system BMS. The host battery management system BMS determines if the battery module If the voltage difference is less than the threshold and there is no fault alarm, close the contactor KM1 of each battery module; if the voltage difference between the battery modules is greater than the threshold, first close the battery module with the lowest voltage and the lowest voltage difference is less than the voltage The contactor KM1 of the battery module with a difference threshold, the energy storage inverter PCS starts charging, and after the voltage difference between the battery modules is less than the voltage difference threshold, then close the contactor KM1 of the remaining battery modules, and the service life of the present invention The capacity can be increased and decreased according to user needs.

Description

technical field [0001] The invention relates to the technical field of energy storage, in particular to an energy storage system. Background technique [0002] With the intensification of the global energy crisis and the deteriorating environment, changes in the energy field are imminent, and new energy power generation methods such as wind and scenery have emerged and gradually developed. [0003] The current home energy storage system has a variety of applications, and MOS is mostly used as switch control. In the case of high current, the burnout protection function is prone to failure, and there is no alarm and no effective measures are taken, resulting in dangers such as combustion and explosion. In addition, the current products and The PCS did not communicate effectively, and did not take safer measures for the battery system when multi-level alarms occurred, resulting in damage to the life and safety performance of the battery itself and eventually led to danger. Mor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/32H02J3/38H02J7/00
CPCH02J3/383H02J7/0022H02J3/32H02J7/0068Y02E10/56
Inventor 胡俊华颜金龙罗嘉明彭宪州
Owner ZHEJIANG CHINT ELECTRIC CO LTD
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