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A power battery redundant charging protection method and system for electric vehicles

A technology for power batteries and electric vehicles, which is applied in the field of power battery redundant charging protection methods and systems, can solve problems such as failure to timely feedback abnormal charging phenomena, unimaginable consequences, and battery overcharge accidents, so as to avoid battery overcharge accidents and improve battery life. The effect of safety and reliability

Active Publication Date: 2018-09-11
BEIJING ELECTRIC VEHICLE
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, once the BMS matching the power battery fails or fails, it cannot timely feed back abnormal charging phenomena, such as abnormal charging voltage and current, etc., which will lead to battery overcharging accidents, and the resulting consequences will be disastrous

Method used

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  • A power battery redundant charging protection method and system for electric vehicles
  • A power battery redundant charging protection method and system for electric vehicles
  • A power battery redundant charging protection method and system for electric vehicles

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Embodiment Construction

[0042] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate 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 invention and should not be construed as limiting the present invention.

[0043] The power battery redundant charging protection method and system for electric vehicles according to the embodiments of the present invention will be described below with reference to the accompanying drawings.

[0044] figure 1 It is a flowchart of a power battery redundant charging protection method for an electric vehicle according to an embodiment of the present invention. Such as figure 1 As shown, the power battery redundant charging protection method for electric vehicles in the embodiment of the present invention...

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Abstract

The invention discloses a redundancy charge protection method for a power battery of an electric vehicle. The redundancy charge protection method is characterized by comprising stopping charge procedures of the power battery when the electric vehicle is in a charge mode and then charge abnormal phenomena are detected by a battery management system (BMS) or a vehicle control unit of the electric vehicle. The redundancy charge protection method for the power battery of the electric vehicle has the advantages that charge conditions of the power battery are simultaneously monitored by the battery management system and the vehicle control unit, charge circuits can be quickly and timely opened once the charge abnormal phenomena are discovered, accordingly, the charge procedures of the power battery can be stopped, battery over-charge accidents due to failure of a controller can be prevented, and the charge safety and reliability of the power battery of the electric vehicle can be improved.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a power battery redundant charging protection method and system for electric vehicles. Background technique [0002] As a key component of electric vehicles, the importance of power batteries is self-evident. The prerequisite for the commercial operation of electric vehicles is to ensure the safety of power batteries. Generally speaking, the safety of power batteries includes high voltage safety and battery charge and discharge safety. Among them, the safety of power battery charging and discharging not only affects its service life, but also affects the safety of vehicles and drivers. In recent years, there have been several cases of electric vehicle power battery fires. According to accident analysis, the main causes of power battery fires are severe vehicle collisions and battery overcharging. At present, due to the uneven performance of the chargers on the market...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L11/18
CPCB60L58/12Y02T10/70
Inventor 马建新丑丽丽李永庆戴嘉昆
Owner BEIJING ELECTRIC VEHICLE
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