Battery hierarchical control method and system for electric vehicle
A technology of electric vehicles and batteries, which is applied in the direction of secondary batteries, secondary battery repair/maintenance, circuits, etc., and can solve problems such as high cost, safety performance needs to be improved, and complex functions of the battery management system
Active Publication Date: 2019-08-23
CH AUTO TECH CORP CO LTD
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[0004] In order to solve the technical problems of the battery management system in the prior art with complex functions, high cost, and unreliable safety performance, the present invention provides a battery hierarchical control method for electric vehicles, the battery of which is composed of several battery modules A battery pack, the method comprising:
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[0056] Exemplary embodiments of the present invention will now be described with reference to the drawings; however, the present invention may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of exhaustively and completely disclosing the present invention. invention and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings do not limit the present invention. In the figures, the same units / elements are given the same reference numerals.
[0057] Unless otherwise specified, the terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it can be understood that terms defined by commonly used dictionaries should be understood to have consistent meanings in the context of their related fields, and should not be understood as idealized or over...
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The invention provides a battery hierarchical control method and a battery hierarchical control system for an electric vehicle. According to the method and the system, the battery management of the electric vehicle combines the electric vehicle running state, the safety state and the battery state judgment. The method comprises the steps of judging the operation state and the safety state of the electric vehicle; hierarchically controlling a battery according to the running state and the safety state of the electric vehicle, wherein a first stage is used for acquiring the total parameters of abattery pack; judging the state of the battery, acquiring electric vehicle safety parameters to determine whether an electric vehicle has fire hazards or not; starting the second stage control on thepremise of determining the state of the battery pack and the safety state of the electric vehicle; acquiring the component parameters of a battery module, and managing the battery according to the acquired data. According to the battery hierarchical control method and the battery hierarchical control system for the electric vehicle, the battery management and the fire hazard monitoring of the vehicle in different states are achieved through hierarchical control. The battery management efficiency is greatly improved. The battery management cost is reduced, and the fire hazard of the vehicle isavoided.
Description
technical field [0001] The present invention relates to the field of battery management, and more particularly, relates to a method and system for controlling battery levels of electric vehicles. Background technique [0002] At present, an electric vehicle usually includes a battery pack for providing electric energy and a BMS (Battery Management System, battery management system) for managing the battery pack. The BMS includes a plurality of BCUs (Battery Control Unit, battery control unit), and each BCU is used to collect the state information of the corresponding battery module and judge the collected state information to send a corresponding signal. Therefore, each BCU The functions are relatively complicated, and a high-cost acquisition and processing chip is required to realize the corresponding functions, which makes the cost of the battery management system relatively high. Moreover, when the BMS is in a dormant state and the vehicle is left for a long time, the ba...
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Login to View More IPC IPC(8): H01M10/42H01M10/48
CPCH01M10/42H01M10/4207H01M10/425H01M10/488H01M2010/4271H01M2010/4278Y02E60/10
Inventor 王克坚张青岭
Owner CH AUTO TECH CORP CO LTD