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Method and system for calculating feedback power

A power and current RMS technology, applied in the field of BMS battery management system, can solve problems such as safety risks and inaccurate calculation of feedback power, and achieve the effect of reducing safety risks

Active Publication Date: 2022-07-08
HUMAN HORIZONS (JIANGSU) TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a method and system for calculating the feedback power, which uses the large surface of the battery as a reference to calculate the lower temperature point on the battery under specific working conditions to calculate the feedback power. Technical problems that cause inaccurate feedback power calculations and lead to safety risks

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  • Method and system for calculating feedback power
  • Method and system for calculating feedback power

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Embodiment Construction

[0074] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0075] It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict.

[0076] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but it is not intended to limit the present invention.

[0077] see figure 1 , the present invention provides a method for calculating t...

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Abstract

The present invention provides a method and a system for calculating feedback power, which are used to calculate the feedback power of a battery pack. By taking the current moment as the time starting point, respectively obtain the first preset time period before the current moment when the busbars flowing through the battery pack are obtained. The first current rms value and the second current rms value of the second preset time period; according to the long-term and short-term current rms values, it is judged whether to correct the temperature of the busbar to solve the problem that the temperature sampling cannot represent the When the actual temperature of the battery cell, the feedback power exceeds the capacity of the battery core itself, which greatly reduces the unsafe risk caused by risk avoidance without affecting the performance as much as possible.

Description

technical field [0001] The present invention relates to the field of BMS battery management systems, in particular to a method and system for calculating feedback power. Background technique [0002] With the development of new energy vehicles and the maturity of power batteries, power batteries are developing in the direction of higher energy density, smaller size and higher power density. As an energy storage device, battery packs are more and more widely used in electric vehicles. , the power battery pack is the core of the electric vehicle energy system. The battery management system must monitor the temperature of the power battery pack in real time to ensure the safety and reliability of electric vehicles. [0003] At present, the temperature sampling points of the battery cells on the market are generally arranged on the busbars of the battery cells, such as copper bars, due to technological limitations. Since the busbar is metal, in general, when the battery power ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/42H01M10/48G01R19/02G01R31/36G01R31/374
CPCH01M10/42H01M10/48G01R31/374G01R31/3648G01R19/02Y02T10/70
Inventor 刁增朋李展王宏伟
Owner HUMAN HORIZONS (JIANGSU) TECH CO LTD