Power battery passive equalization control method and device, vehicle and storage medium
A power battery, passive balancing technology, applied in battery/fuel cell control devices, vehicle energy storage, vehicle components, etc., can solve problems such as inconsistencies, and achieve the effect of ensuring consistency and reducing differences in single cells
Active Publication Date: 2021-10-01
BYD CO LTD
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Problems solved by technology
Due to material, process and other reasons, there are inconsistencies in the monomers produced by power battery manufacturers at home and abroad. In order to meet the requirements of power, reliability, and safety of the vehicle, the inconsistency of power battery monomers has become a new constraint. Restrictive factors that cannot be ignored in the development of energy vehicles
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[0021] Embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary, and are intended to explain the present application, and should not be construed as limiting the present application.
[0022] The passive battery balancing control method, control device, vehicle and computer-readable storage medium of the embodiments of the present application are described below with reference to the accompanying drawings.
[0023] figure 1 It is a flowchart of a passive balancing control method for a power battery according to an embodiment of the present application. It should be noted that the passive balance control method of the power battery of the embodiment of the present application can be applied to the passive ...
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The invention discloses a power battery passive equalization control method and device, a vehicle and a storage medium. The method comprises the steps of detecting whether a current whole vehicle state meets a triggering condition of passive equalization of a power battery or not; when it is detected that the current whole vehicle state meets the triggering condition of passive equalization of the power battery, according to the parking duration of the whole vehicle and the state information of each single battery in the power battery, determining the single battery to be equalized this time; determining the target equalization time of the single battery to be equalized this time; and equalizing the single battery to be equalized this time according to the target equalization time. According to the invention, under the condition that the current whole vehicle state meets the triggering condition of passive equalization of the power battery and the parking time is short, the single battery which is not subjected to single equalization last time can be continued to be equalized; and meanwhile, under the condition that the current whole vehicle state is ensured to be safe, equalization of the power battery is effectively started, so that the difference of the single batteries is reduced, and the consistency of the single power batteries is ensured.
Description
technical field [0001] The present application relates to the field of vehicle control, and in particular to a passive balancing control method for a power battery, a control device, a vehicle, and a computer-readable storage medium. Background technique [0002] In recent years, with the rapid development of new energy vehicles, lithium-ion power batteries have been widely used in hybrid, plug-in hybrid and pure electric vehicles. Due to material, process and other reasons, there are inconsistencies in the monomers produced by power battery manufacturers at home and abroad. In order to meet the requirements of power, reliability, and safety of the vehicle, the inconsistency of power battery monomers has become a new constraint. The restrictive factors that cannot be ignored in the development of energy vehicles. Providing a reliable balance control system for power battery cells has considerable economic and social benefits for the current industrialization of new energy v...
Claims
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IPC IPC(8): B60L58/22
CPCB60L58/22Y02T10/70
Inventor 陈斯良杨鑫黄伟钟上友代华堂
Owner BYD CO LTD