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A charging control method and device, and battery management system

A charging control method and battery technology, which are applied in battery/fuel cell control devices, charging stations, electric vehicle charging technology, etc., can solve the problems that the safe use of batteries cannot be guaranteed, and the safe use of batteries cannot be fully guaranteed, so as to ensure safe use. Effect

Active Publication Date: 2021-05-18
JIANGSU CONTEMPORARY AMPEREX TECHNOLOGY LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the allowable upper limit SOC is fixed, after the performance of the battery changes, the allowable upper limit SOC may not guarantee the safe use of the battery
Therefore, the existing charging control method cannot fully guarantee the safe use of the battery

Method used

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  • A charging control method and device, and battery management system
  • A charging control method and device, and battery management system
  • A charging control method and device, and battery management system

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Embodiment Construction

[0026] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

[0027] The charging control method provided in the embodiments of the present application may be applied to electric vehicles, including: electric vehicles, electric motorcycles, and the like. In addition to electric vehicles, the charging control method can also be applied to other electric equipment (equipment using a power battery as a power source).

[0028] Whether it is an electric vehicle or an electric device, it is usually equipped with a battery management system. The battery management system and the battery constitute a battery system. The battery management system is used to manage the battery, such as the battery state, battery capacity and other parameters. Management ; such as charging the battery. Therefore, the hardware environment to which the charging control method is applied m...

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Abstract

The application provides a charging control method and device, and a battery management system; it relates to the technical field of batteries. The charging control method includes: determining the theoretical upper limit range of the SOC of the current charging cycle of the battery; obtaining charging information of N charging cycles of the battery before the current charging cycle; The charging cut-off SOC of the current charging cycle is determined according to the theoretical upper limit range of the SOC of the current charging cycle and the SOC margin; in the current charging cycle, when the SOC reaches the charging cut-off SOC of the current charging cycle, the charging of the battery is stopped. The charging control method is used to ensure the safe use of the battery.

Description

technical field [0001] The present application relates to the technical field of batteries, in particular, to a charging control method and device, and a battery management system. Background technique [0002] Lithium-ion batteries are widely used in fields such as electric vehicles due to their high energy density and recyclability. However, lithium-ion batteries have different aging rates under different charging or discharging conditions (including different storage and use temperatures, rates, charge and discharge depths, etc.). By optimizing the allowable upper limit SOC of the battery (which can be understood as the charge cut-off SOC), the aging problem of the battery can be improved, the service life of the battery can be prolonged, and the use safety of the battery can be improved. [0003] At present, the allowable upper limit SOC (State Of Charge) of the battery is usually set to a fixed threshold (usually less than 100%). After the battery reaches the fixed thr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L58/13B60L53/00
CPCB60L58/13B60L53/00Y02T90/14
Inventor 杜明树李世超吴维清张伟
Owner JIANGSU CONTEMPORARY AMPEREX TECHNOLOGY LIMITED