Battery balancing method, system, vehicle, storage medium and electronic device
A technology for battery balancing and balancing current, applied in the field of control, can solve the problems of low balancing efficiency and inability to achieve balancing effect, achieve the effect of accurate balancing process and avoid too long or too short balancing time
Active Publication Date: 2021-06-18
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
Method used
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[0030] Specific embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.
[0031] see figure 1 , is a schematic diagram of a battery balancing system according to an embodiment of the present disclosure. The battery balancing system includes: a control module 101 , an acquisition module 102 , a balancing module 103 and a battery pack 104 .
[0032] In one embodiment, each single battery corresponds to a collection module 102 and a balancing module 103 . The acquisition module 102 and the balance module 103 corresponding to the same single battery are respectively connected to the control module 101 through different control channels. The control module may include a control chip, and the control chip is respectively connected to ...
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The present disclosure relates to a battery equalization method, system, vehicle, storage medium, and electronic equipment. The method includes: obtaining the self-discharge rate of a single battery to be balanced in a battery pack; obtaining a reference self-discharge rate required for equalization; according to The self-discharge rate of the single battery to be balanced and the reference self-discharge rate determine the target equalization duration of the single battery to be balanced; according to the target equalization time length, the balance of the single battery to be balanced is controlled. Since the target equalization time period based on the equalization process is calculated based on the difference between the self-discharge rate of the single battery to be equalized and the reference self-discharge rate, it is more accurate, which in turn makes the equalization process more accurate and avoids the need for equalization time. Either too long or too short occurs.
Description
technical field [0001] The present disclosure relates to the technical field of control, and in particular, relates to a battery balancing method, system, vehicle, storage medium, and electronic equipment. Background technique [0002] Large-capacity batteries that provide power energy for electric vehicles are often called 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 difference between the individual batteries gradually increases, and the consistency between the individual batteries is poor. Due to the short plate effect of the battery, the capacity of the battery pack is limited, so that the capacity of the battery pack cannot be fully utilized, resulting in the failure of the battery pack. Overall capacity is reduced. On the other hand, after the differences among individual batteries gradually expand, some single batteries will be overcharged and some single ba...
Claims
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IPC IPC(8): B60L58/10B60L58/22H02J7/00
CPCH02J7/0019B60L2240/547B60L58/21B60L58/22B60L58/10Y02T10/70
Inventor 罗红斌王超沈晓峰曾求勇刘苑红张祥
Owner BYD CO LTD