Method for controlling energy storage device, energy storage device, power supply system and power utilization device
An energy storage device, control and management technology, applied in the direction of circuit devices, battery circuit devices, collectors, etc., can solve the problems of the scope of failure, the failure of the battery to be re-paralleled, etc., and achieve the effect of reducing the scope of failure
Pending Publication Date: 2021-05-28
DONGGUAN POWERAMP TECH LTD
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Problems solved by technology
[0004] (1) Control all the battery packs to be disconnected from the PCS through the BMS, shut down all the battery packs, wait for the faulty battery pack to be repaired, and then power on and start again after the fault is cleared. However, this method will cause a large fault impact scope;
[0005] (2) Only the faulty battery pack is controlled to be electrically disconnected from the PCS through the BMS, that is, only the faulty battery pack is shut down, and the remaining battery packs operate normally. The risk of being unable to re-parallel for a long time after returning to normal
Method used
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[0050] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.
[0051]In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, not to limit the present application.
[0052] It should be noted that, if there is no conflict, various features in the embodiments of the present ...
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The embodiment of the invention relates to the technical field of energy storage, and discloses a method for controlling an energy storage device, an energy storage device, a power supply system and a power utilization device. The energy storage device comprises a battery pack array; the battery pack array comprises at least two battery packs which are connected in parallel; and when a single battery pack breaks down, only when the current state-of-charge value of the battery pack array is within the state-of-charge range (namely within the preset threshold interval) corresponding to a typical operation condition, the fault battery pack is cut off; on one hand, the remaining battery packs in the battery pack array can be continuously used, the fault influence range can be reduced; and on the other hand, the state of charge of the faulty battery pack is within the state of charge range corresponding to the typical operation condition (namely within the preset threshold interval), when the faulty battery pack returns to normal, the battery pack needs to be put into operation again, and the states of charge of the remaining battery packs can reach the state of charge of the faulty battery pack again within a short time, so that the fault battery pack can be smoothly subjected to parallel operation within a relatively short time after being recovered to normal.
Description
technical field [0001] The embodiments of the present invention relate to the technical field of energy storage, and in particular, to a method for controlling an energy storage device, an energy storage device, a power supply system, and a power consumption device. Background technique [0002] The energy storage device is a device that uses a battery as an electric energy storage carrier to store electric energy for a certain period of time and supply electric energy for a certain period of time. It is now widely used in low-voltage home storage, high-voltage home storage, small industrial and commercial storage, and other application scenarios where the end user is a family or an individual. middle. The energy storage device mainly includes multiple battery packs (Module / Pack / Rack), battery management system (BMS) and power conversion unit (PCS), among which multiple battery packs are connected to form a battery pack array. [0003] At present, when a fault alarm occurs ...
Claims
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Login to View More IPC IPC(8): H02J7/00
CPCH02J7/0013H02J7/0068
Inventor 林吉骏王付伟
Owner DONGGUAN POWERAMP TECH LTD