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Method and device for testing battery dynamic characteristics

A technology of dynamic characteristics and testing equipment, which is applied in the direction of measuring equipment, measuring electricity, measuring electrical variables, etc., can solve the problems of not being able to reflect the usage rules of the battery, and achieve the effects of saving experimental time, strong versatility, and easy operation

Active Publication Date: 2019-04-05
BEIJING MECHANICAL EQUIP INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above analysis, the present invention aims to provide a battery dynamic characteristic test method and device to solve the problem that the existing test method cannot reflect the actual use law of the battery under dynamic working conditions

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  • Method and device for testing battery dynamic characteristics
  • Method and device for testing battery dynamic characteristics

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Embodiment Construction

[0031] Preferred embodiments of the present invention will be specifically described below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the application and are used together with the embodiments of the present invention to explain the principles of the present invention.

[0032] According to a specific embodiment of the present invention, a device for testing battery dynamic characteristics is disclosed, such as figure 1 As shown, the battery dynamic characteristic test device includes: a battery pack, a battery management system, a host computer, a controllable electronic load, a controllable high-power DC power supply, and a high and low temperature test box; specifically,

[0033] The control signal terminals of the battery management system, high and low temperature test box, controllable electronic load, and controllable high-power DC power supply are connected to the host computer through the CAN bus;

[0034] The...

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Abstract

The invention relates to a method and a device for testing dynamic characteristics of a battery. The method comprises the following steps of generating a testing process file; controlling a high-precision charger and a high-precision load to sequentially and alternately charge and discharge at a set charge-discharge rate according to parameters in the process file by an upper computer; acquiring and storing voltage, total voltage, total current and temperature data of single batteries of a battery pack in real time through a battery management system, and displaying curves and a data table by the upper computer; finishing analysis on measurement data to generate a testing report. The method is simple and convenient to operate and high in generality; most dynamic characteristics of the battery can be excited quickly, systematically and comprehensively in a short time, and experiment time is greatly saved. Charge and discharge pulses with different duration times are adopted; in addition, pulse width accords with a normal distribution rule and an actual application rule of the battery, the dynamic characteristics of the battery under actual working conditions can be obtained under a laboratory environment.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a method and device for testing battery dynamic characteristics. Background technique [0002] With the depletion of fossil energy and the aggravation of environmental pollution, clean and environmentally friendly all-electric electric vehicles have been used more and more. As the main energy source of electric vehicles, the on-board power battery system is the core component of electric vehicles. Its operating status directly affects the performance of electric vehicles. The battery system is a very complex system, and its electrochemical reaction process presents a highly nonlinear characteristic, and some reaction mechanisms inside the battery have not yet been fully explored. In this case, it is very difficult to study related issues in this field only relying on the battery reaction mechanism, such as battery modeling, battery dynamic characteristics analysis, battery agi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/396G01R31/385
CPCG01R31/382
Inventor 李勇徐晓彤孟祥适
Owner BEIJING MECHANICAL EQUIP INST
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