Battery equalization method and system, vehicle, storage medium and electronic device
A battery equalization and equalization technology, applied in the field of control, can solve problems such as low equalization efficiency and failure to achieve equalization effects
Active Publication Date: 2019-07-16
BYD CO LTD
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Problems solved by technology
In the process of equalizing a single battery, if the equalization time of a single battery is too long, it will increase the inconsistency of each single battery in the battery pack where it is located, resulting in low equalization efficiency; if the equalization time of a single battery If it is too short, the balance effect will not be achieved
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[0032] The specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure, but not to limit the present disclosure.
[0033] see figure 1 , which is a schematic diagram of a battery balancing system according to an embodiment of the present disclosure. The battery balance system includes: a control module 101 , a collection module 102 , a balance module 103 and a battery pack 104 .
[0034] In one embodiment, each single cell corresponds to one acquisition module 102 and one equalization module 103 . The acquisition module 102 and the equalization module 103 corresponding to the same single cell are respectively connected to the control module 101 through different control channels. The control module may include a control chip, the control chip is respectively connected with the ...
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The invention relates to a battery equalization method and system, a vehicle, a storage medium and an electronic device. The battery equalization method comprises the steps that SOC values of to-be-equalized battery cells in a battery pack are obtained; a reference SOC value required by equalization is obtained; according to the SOC values of the to-be-equalized battery cells and the reference SOCvalue, the target equalization time of the to-be-equalized battery cells is determined; and according to the target equalization time, equalization of the to-be-equalized battery cells is controlled.Due to the fact that the target equalization time on which the equalization process is based is calculated according to difference values between the SOC values of to-be-equalized battery cells and the reference SOC value, the more accurate effect is achieved, the equalization process is also more accurate, and the situation of the too long or too short equalization time is avoided.
Description
technical field [0001] The present disclosure relates to the field of control technology, and in particular, to a battery balancing method, system, vehicle, storage medium, and electronic device. Background technique [0002] Large-capacity batteries that provide power for electric vehicles are often referred to as power batteries. Vehicle power batteries generally consist of multiple single cells connected in series to form a module. With the use of the battery, the differences between the single cells gradually expand, and the consistency between the single cells is poor. Due to the short-board effect of the battery, the capacity of the battery pack is limited, so that the capacity of the battery pack cannot be fully exerted, resulting in the battery pack's failure. The overall capacity is reduced. On the other hand, after the difference between the individual cells gradually expands, some cells will be overcharged and some cells will be overdischarged, which will affect...
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IPC IPC(8): B60L58/20B60L58/22H02J7/00
CPCH02J7/0019B60L58/20H02J7/0014B60L2240/547B60L2240/80B60L58/12B60L58/21B60L58/22H02J7/0016Y02T10/70
Inventor 罗红斌王超沈晓峰曾求勇刘苑红张祥
Owner BYD CO LTD