Storage battery surplus energy monitoring method and monitoring device

A technology for remaining power and batteries, which is applied in the field of battery remaining power monitoring methods and monitoring devices, and can solve problems such as inaccurate monitoring results and poor real-time performance

Inactive Publication Date: 2012-08-01
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a method and a monitoring device for monitoring the remaining battery power, so as to solve the shortcomings of the monitoring method

Method used

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  • Storage battery surplus energy monitoring method and monitoring device
  • Storage battery surplus energy monitoring method and monitoring device
  • Storage battery surplus energy monitoring method and monitoring device

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Embodiment Construction

[0061] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0062] As a technical parameter of the battery, the remaining power of the battery cannot be directly measured with measuring tools during the working process of the battery. Therefore, the technical means of monitoring the remaining power with the help of an appropriate model is adopted in this field. Specifically, the equivalent circuit of the battery is used to establish the relevant model of the battery, and by monitoring the measurable parameters in the model that have a unique relationship with the remaining power of the battery, the remaining power of the battery is obtained by using the measurable parameters. The battery remaining power monitoring method and monitoring device proposed by the present invention are based on this.

[0063] Please refer to figure 1 ,Should figure 1 Shown is a structura...

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Abstract

The invention discloses a storage battery surplus energy monitoring method and a monitoring device. The monitoring device comprises the following steps of: constructing a storage battery state space model; utilizing off-line sample data to carry out off-line identification on the state space model of a storage battery, and utilizing a model parameter off-line identification result and on-line sample data to carry out on-line identification on the state space model of the storage battery; constructing a state observer according to a model parameter on-line identification result and a storage battery state space model, and carrying out observation on a storage battery open-circuit voltage; and obtaining the surplus energy of the storage battery according to the corresponding relation of the storage battery open-circuit voltage and the surplus energy of the storage battery. The monitoring method and the monitoring device provided by the invention can carry out monitoring on the surplus energy of the storage battery through a method of the on-line identification model parameter, effectively reduce storage battery time-varying nonlinear characteristic, the influence of measuring errors and noises and the like on a surplus energy monitoring result, improve monitoring accuracy, reduce measuring errors, and strengthen the instantaneity of the monitoring.

Description

technical field [0001] The invention relates to the technical field of storage battery application, in particular to a method and a monitoring device for monitoring the remaining power of a storage battery. Background technique [0002] New energy vehicles represented by electric vehicles are generally considered to be one of the most effective ways to solve current energy and pollution problems, and have attracted widespread attention at home and abroad. It is generally believed that an electric vehicle refers to a vehicle that is powered by a vehicle-mounted power supply, uses a motor to drive the wheels, and meets the requirements of road traffic and safety regulations. Compared with traditional fuel vehicles, electric vehicles have the characteristics of high performance, low energy consumption and low pollution, as well as comprehensive advantages in technology, economy and environment, and their prospects are widely optimistic. In this context, electric vehicle techno...

Claims

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Application Information

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IPC IPC(8): G01R31/36
Inventor 贠海涛赵玉兰刘尊年孙建强吕福麟
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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