A battery management system

A technology of battery management system and battery module, which is applied in the direction of battery charge management, battery circuit device, arrangement of multiple synchronous batteries, etc., to achieve the effect of improving life cycle and performance, reducing charge and discharge depth, and safe and reliable operation

Active Publication Date: 2022-04-12
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The battery management system adopts the active equalization method, uses the bottom equalization unit to solve the voltage equalization problem between any two battery cells, and the top level equalization module solves the voltage equalization problem between the battery modules

Method used

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  • A battery management system
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Embodiment Construction

[0029] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0030] like figure 1 As shown, the battery management system of the present invention includes: a data monitoring module, a control module, a driving module, a balancing module and a display module. Multiple battery cells are connected in series or in parallel to form a battery module, and multiple battery modules are connected in series or in parallel to form a battery pack. The input end of the data monitoring module is connected to each battery cell, the output end of the data monitoring module is connected to the input end of the communication module, and the output end of the communication module is respectively connected to the input end of the control module and the input end of the display module connected. The output end of the control module is connected with the input end of the drive module, and the equalization module is composed...

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Abstract

A battery management system includes a control module, a data monitoring module, an equalization module, a driving module and the like. Multiple battery cells are connected in series or in parallel to form a battery module. The input end of the data monitoring module is connected to each battery cell, the output end of the data monitoring module is connected to the input end of the communication module, and the output end of the communication module is respectively connected to the input end of the control module and the input end of the display module. The output end of the control module is connected with the input end of the drive module, and the input end is connected with the output end of the data acquisition module. The equalization module is composed of a bottom level equalization unit and a top level equalization unit. The input ends of the bottom level equalization unit and the top level equalization unit are connected to the output end of the drive module, and the output end of the bottom level equalization unit is connected to the battery cell; the output end of the top level equalization unit is connected to the The battery modules are connected; in the battery management system, the energy balance is performed between the battery cells through the bottom level balance unit, and the energy balance between the battery modules is performed through the top level balance unit.

Description

technical field [0001] The invention relates to a battery management system. Background technique [0002] During the working process of the power battery, due to the inconsistency of the single cells in the battery pack, some of the single cells have been fully charged during the charging process of the battery pack, but some of the single cells have not yet been fully charged. However, because some of the monomers are already fully charged, the battery pack stops charging, resulting in a chargeable charge of the battery pack that is much smaller than the sum of the capacities of all the monomers. During the discharge process, some monomers have been discharged and some monomers have not been discharged. Because some monomers have been fully discharged, the battery pack will stop discharging, resulting in the discharge of the battery pack being less than the actual charge of the battery pack. The inconsistency of the single battery not only affects the utilization rate of...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H02J7/00
CPCH02J7/0022H02J7/0019H02J7/0018
Inventor甫日甫才仁霍群海尹靖元吴理心韦统振
OwnerINST OF ELECTRICAL ENG CHINESE ACAD OF SCI