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Distributed type active non-dissipative type equalization circuit of series battery packs, battery packs and automobile

A technology of series battery packs and equalizing circuits, applied in charge equalizing circuits, electric vehicles, battery circuit devices, etc., can solve problems such as low working precision and complex overall layout, achieve precise working precision, simplify circuit structure and layout design Effect

Active Publication Date: 2017-09-29
EVE ENERGY CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a distributed active non-dissipative equalization circuit for series battery packs, battery packs and automobiles, which solves the defects of complex overall layout and low working accuracy of the centralized battery equalization scheme in the prior art

Method used

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  • Distributed type active non-dissipative type equalization circuit of series battery packs, battery packs and automobile
  • Distributed type active non-dissipative type equalization circuit of series battery packs, battery packs and automobile
  • Distributed type active non-dissipative type equalization circuit of series battery packs, battery packs and automobile

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Embodiment Construction

[0031] In order to further explain the technical means and effects that the present invention takes to achieve the intended invention purpose, below in conjunction with the accompanying drawings and preferred embodiments, the series battery pack distributed active non-dissipative equalization circuit, battery pack proposed according to the present invention And the specific embodiment, feature and effect thereof of automobile, detailed description is as follows.

[0032] Please refer to Figure 1 to Figure 3 , which are respectively the topology diagram of the distributed active non-dissipative equalization circuit of the series battery pack provided in the embodiment of the present invention, the structural diagram of the distributed slave board in the distributed active non-dissipative equalization circuit of the series battery pack, and the series battery Schematic diagram of the overall structure of the group distributed active non-dissipative equalization circuit.

[003...

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Abstract

The invention discloses a distributed type active non-dissipative type equalization circuit of series battery packs, the battery packs and an automobile. At least two distributed type slave plates, a main control plate, a current sensor and a storage battery are arranged; each distributed type slave plate corresponds to one series battery pack and is electrically connected with the storage battery through a power supply circuit and used for conducting charge / discharge equalization on battery cells of the series battery packs through the storage battery; the current sensor is arranged in the power supply circuit and is electrically connected with the main control plate and used for acquiring current output by the series battery packs in the power supply circuit; the main control plate is connected with the distributed type slave plates and the storage battery and used for obtaining the SOC parameter of each battery cell in the series battery packs according to the current acquired by the current sensor, and according to the SOC parameters, the distributed type slave plates are controlled to conduct charge / discharge equalization on battery cells of the series battery packs. The distributed type design of battery equalization is achieved, the circuit structure and the layout design are simplified, distributed type design is achieved, at the same time, the current acquisition process is simultaneously split, and the working accuracy is thus more accurate.

Description

technical field [0001] The invention relates to the field of battery technology, in particular to a distributed active non-dissipative equalization circuit of a series battery pack, a battery pack and an automobile. Background technique [0002] The general non-dissipative active balancing slave board scheme adopts a centralized layout, and an energy sharing track is designed to exchange energy between a single or multiple monomers. The track is respectively connected to the battery pack BUS+ and BUS-, and a slave The number of battery strings collected and balanced by the board is relatively large; when the number of battery strings is greater than the number of slave board design strings, the number of slave boards is increased in a modular manner; all currents of the battery pack are output by the total positive and negative interfaces of the battery pack, and then by The on-board DCDC is converted to low voltage 12 or 24V for powering on-board electrical appliances and c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L11/18H02J7/00
CPCH02J7/0014B60L58/13Y02T10/70
Inventor 张国江黄国民苑丁丁刘金成
Owner EVE ENERGY CO LTD
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