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A power battery SOC prediction device, vehicle and method

A technology of power battery and prediction device, applied in battery/fuel cell control device, measurement device, electric vehicle, etc., to achieve the effect of improving prediction accuracy

Active Publication Date: 2022-05-03
WUHU INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The object of the present invention is to provide a power battery SOC prediction device, automobile and method, the power battery SOC prediction device overcomes the problem in the prior art that it is impossible to establish an accurate mathematical model to describe the charging and discharging characteristics of the power battery, and improve The accuracy of describing the charging and discharging characteristics of the power battery

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  • A power battery SOC prediction device, vehicle and method
  • A power battery SOC prediction device, vehicle and method

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Embodiment Construction

[0021] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0022] The present invention provides a power battery SOC prediction device based on fuzzy multi-model Kalman filter, such as figure 1 As shown, the power battery SOC prediction device includes a microcontroller connected to the following components of the power battery to record the charge and discharge time of the power battery, a temperature sensor to measure the temperature of the power battery, a current sensor to measure the charging current of the power battery, and a current sensor to measure the discharge voltage of the rechargeable battery The voltage sensor, wherein, the microcontroller is respectively connected to the temperature sensor, current sens...

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Abstract

The invention relates to the field of power battery health status, and discloses a power battery SOC prediction device based on fuzzy multi-model Kalman filter. The power battery SOC prediction device includes a microcontroller connected to the following components of the power battery to record the charging and discharging time of the power battery , a temperature sensor for measuring the temperature of the power battery, a current sensor for measuring the charging current of the power battery, and a voltage sensor for measuring the discharge voltage of the rechargeable battery, wherein the microcontroller is connected to the temperature sensor, the current sensor and the voltage sensor respectively. After a mathematical model for predicting the state of charge of the power battery and the weight of each state of charge are obtained, the state of charge value of the power battery is obtained through a weighted summation algorithm. The invention improves the accuracy of describing the charging and discharging characteristics of the power battery.

Description

technical field [0001] The present invention relates to the field of power battery health status, and in particular, relates to a power battery SOC prediction device, a vehicle and a method. Background technique [0002] Accurately measuring the state of charge of the traction battery is of great significance to the energy management and battery protection of the traction battery. However, as the battery usage time increases, the internal resistance of the battery will increase, and the capacity of the battery will also decrease. Moreover, there is a complex nonlinear relationship between the state of charge of the battery, the ambient temperature and the charge and discharge current, which makes it difficult to establish an accurate mathematical model to describe the charge and discharge characteristics of the power battery. It is precisely because of the accuracy of the mathematical model that limits the application of traditional Kalman filtering in engineering. Conten...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L58/12B60L58/13B60L58/16G01R31/367G01R31/388
CPCY02T10/70
Inventor 王勇陈万顺钱峰夏跃武杨会安强
Owner WUHU INST OF TECH
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