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Battery cell equalization method and battery management system

An equalization method and battery cell technology, applied in the field of data processing, can solve problems that affect the car experience and the car cannot start normally, and achieve the effect of avoiding battery undervoltage

Pending Publication Date: 2021-03-19
度普(苏州)新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a cell equalization method and a battery management system to solve the problem that the existing cell equalization strategy easily causes the car to fail to start normally, thus seriously affecting the car experience

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  • Battery cell equalization method and battery management system
  • Battery cell equalization method and battery management system
  • Battery cell equalization method and battery management system

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Embodiment Construction

[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0050] In this application, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes none. other elements specifically listed, or also include elements inherent in such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "com...

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Abstract

The invention provides a battery cell equalization method and a battery management system. The method comprises the following steps: acquiring the battery cell equalization temperature of an automobile and the battery cell states of all the battery cells when the automobile is in a starting state; based on the battery cell equalization temperature and the battery cell state of each battery cell, determining whether the automobile needs to be subjected to battery cell equalization or not; if the automobile needs to be subjected to battery cell equalization, determining to-be-equalized battery cells needing to be equalized in all the battery cells by utilizing the voltage of each battery cell; and equalizing all the to-be-equalized battery cells. According to a scheme in the invention, whenthe automobile is in the starting state, whether the automobile needs to be subjected to battery cell equalization or not is determined according to the battery cell equalization temperature and the battery cell state; and if so, the to-be-equalized battery cells required to be equalized are determined and are equalized, so undervoltage of a battery caused by multiple self-awakening of the batterymanagement system after the automobile is shut down is avoided, normal starting of the automobile is guaranteed, and the use experience of the automobile is improved.

Description

technical field [0001] The invention relates to the technical field of data processing, in particular to a cell balancing method and a battery management system. Background technique [0002] With the popularization of automobiles and the development of science and technology, the degree of electrification of automobiles is getting higher and higher, and the protection of automobile batteries is becoming more and more important. [0003] In order to protect the battery cells of the car, it is necessary to balance the battery cells of the car. The current cell equalization method usually adopts a static equalization strategy. The specific method is: after the car is turned off, the battery management system (Battery Management System, BMS) wakes up every once in a while to check whether the cells need to be balanced. The core discharges. However, BMS self-awakening consumes power. When the car is not used for a long time, the BMS self-awakens and equalizes the battery cells...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H01M10/44B60L58/10
CPCH02J7/0014H01M10/441B60L58/10Y02T10/70Y02E60/10
Inventor 吴军
Owner 度普(苏州)新能源科技有限公司
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