Equalizing device and energy storage system containing the equalizing device

A balancing device and balancing technology, applied in the field of energy storage systems, can solve the problems of high cost and high dc-dc damage probability, and achieve the effect of reducing the requirements of withstand voltage performance, improving service life and high voltage level

Active Publication Date: 2022-04-08
JIANGSU RICHPOWER NEW ENERGY TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In a large-scale energy storage system, due to the large number of battery packs, it is necessary to configure many DC-DC modules, and the increase in the number of DC-DC modules is costly, and secondly, it also affects the reliability of large-scale energy storage systems. poses a great challenge, multiple dc-dc damage probability is high

Method used

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  • Equalizing device and energy storage system containing the equalizing device
  • Equalizing device and energy storage system containing the equalizing device
  • Equalizing device and energy storage system containing the equalizing device

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Embodiment Construction

[0037] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are provided, but the protection scope of the present invention is not limited to the following embodiments.

[0038] A balancing device such as figure 2 and Figure 4 As shown, it includes a controller, a power conversion module 2, a current control module 4 and a switch array 3 connected in sequence, the input terminal of the power conversion module 2 is connected to a balanced power supply, the switch array 3 is connected to the battery pack 1, and the current control module 4 Control the current between the power conversion module 2 and the switch array 3; the switch array 3 includes a plurality of first relays, and the normally open ends of each first relay are respectively connected...

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Abstract

The invention relates to a balancing device and an energy storage system containing the balancing device, wherein the balancing device includes a controller, and a power conversion module, a current control module and a switch array connected in sequence, and the input end of the power conversion module is connected to a balanced power supply, The switch array is connected to the battery pack, and the current control module controls the current between the power conversion module and the switch array; the switch array includes a plurality of first relays, and each first relay is connected to each battery string of the plurality of battery packs in a one-to-one correspondence. Compared with the prior art, the present invention can achieve a significant increase in the number of battery strings supported by a power conversion module, not only can significantly reduce the cost in large-scale energy storage systems, but also can accurately control the battery strings in a certain battery pack for precise equalization.

Description

technical field [0001] The invention relates to an equalization technology applied to a large-scale energy storage system, in particular to an equalization device and an energy storage system containing the equalization device. Background technique [0002] In the energy storage system, in order to maintain the consistency of each battery string and each pack, a balance module needs to be configured. The balance module needs to include a DC-DC module and a switch array, such as figure 1 As shown, in the prior art, a battery pack 1 contains a plurality of battery strings 11 connected in series, and the battery strings 11 are obtained by connecting an indefinite number of cells in parallel, each battery string 11 has a corresponding switch, and the battery pack 1 passes through The switch array 3 is connected to the DC-DC module. Generally, in the prior art, one battery pack 1 corresponds to one DC-DC module, or several (limited, generally 1-2) battery packs 1 correspond to on...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H02J7/02H01M10/42
CPCH02J7/0014H02J7/0016H02J7/0019H02J7/02H01M10/4207H01M10/425H01M2010/4271Y02E60/10
Inventor 葛厚艺
Owner JIANGSU RICHPOWER NEW ENERGY TECH
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