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Battery equalization management circuit and control method thereof

A battery balancing and discharging circuit technology, applied in the power supply field, can solve problems such as low battery balancing efficiency, and achieve the effects of easy expansion, easy modularization, and improved battery balancing speed.

Pending Publication Date: 2020-06-12
CHINA ENFI ENGINEERING CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present disclosure is to provide a battery balancing management circuit and its control method, which are used to overcome the problem of low battery balancing efficiency due to the limitations and defects of related technologies at least to a certain extent

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  • Battery equalization management circuit and control method thereof
  • Battery equalization management circuit and control method thereof
  • Battery equalization management circuit and control method thereof

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Embodiment Construction

[0032] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced without one or more of the specific details being omitted, or other methods, components, devices, steps, etc. may be adopted. In other instances, well-known technical solution...

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Abstract

The invention provides a battery equalization management circuit and a control method thereof. The battery equalization management circuit comprises a direct-current power supply input end; a plurality of battery modules, each battery module comprising a battery, a charging switch group and a discharging switch group; a discharge circuit electrically connected to the discharge switch groups of theplurality of battery modules; a DC / DC direct-current power module, electrically connected to the direct-current power supply input end and the charging switch groups of the plurality of battery modules; a controller, electrically connected to the plurality of battery modules and used for controlling the charging switch group of the battery module to be switched on and controlling the dischargingswitch group to be switched off when the electric quantity of the battery in any battery module is lower than a first preset value, and when the electric quantity of the battery in any battery moduleis higher than a second preset value, controlling the discharge switch group of the battery module to be switched on and the charge switch group to be switched off. The battery equalization managementcircuit provided by the invention can satisfy rapid, efficient and reliable equalization of high-capacity and high-current batteries.

Description

technical field [0001] The present disclosure relates to the field of power supply technology, in particular, to a battery equalization management circuit capable of realizing fast, efficient and reliable equalization of large-capacity and high-current batteries and a control method thereof. Background technique [0002] Currently commonly used lithium iron phosphate battery balancing circuits are divided into energy dissipation circuits and non-energy dissipation circuits. The energy dissipation type circuit is relatively simple, but it consumes a lot of energy, the equalization speed is slow, and the efficiency is low, and the resistance heat dissipation will affect the normal operation of the system. [0003] Non-energy dissipative circuits include equalization circuits composed of energy storage elements (inductors or capacitors) and control switches. The energy storage elements can be capacitors or inductors. The non-energy dissipation type circuit has a simple structu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H01M10/44
CPCH01M10/441H02J7/0019Y02E60/10
Inventor 刘志豪林瑶瑶
Owner CHINA ENFI ENGINEERING CORPORATION