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A battery state of power estimation method and a battery state monitoring system

A technology of power state and state of charge, applied in battery/battery traction, battery/fuel cell control devices, battery circuit devices, etc.

Inactive Publication Date: 2019-10-25
VOLVO LASTVAGNAR AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In document US2016 / 0131714A1 a SOP estimation model is proposed which is advanced but has many problems in correct power and current estimation

Method used

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  • A battery state of power estimation method and a battery state monitoring system
  • A battery state of power estimation method and a battery state monitoring system
  • A battery state of power estimation method and a battery state monitoring system

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Embodiment Construction

[0018] figure 1 is a schematic diagram of a circuit 1 for performing the method M of the present invention for the measured temperature value T of the battery m , the estimated SOC and the output voltage To estimate the SOP of the battery. In the model, the intermediate SOP value (SOP int ) and parameter error estimates for errors in measured parameters and / or estimated parameters (P f ) to iterate to optimize the value of the estimated SOP value (SOP).

[0019] figure 2 is a schematic diagram of a battery state monitoring system 10 for monitoring the state of the battery 6, the battery state monitoring system 10 includes figure 1 The control unit of Circuit 1. The voltage sensor 5 measures the output voltage of the battery 6 , the current sensor 4 measures the current of the battery 6 , and the temperature sensor 3 measures the temperature of a cell of the battery 6 . The state of charge estimation unit 8 can be used to provide the input SOC required by the model acc...

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PUM

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Abstract

The present invention relates to a method of estimating a power state (SOP) for a battery (6) of an electric vehicle. The method comprises: measuring a temperature (Tm) of the battery and an output voltage of the battery and receiving a state of charge (SOC) estimation based on the battery model; and providing an SOP estimation model (M) of the battery, the estimation model including the measuredtemperature (Tm) and the measured output voltage. The method is characterized in that the SOP estimation model (M) further includes parameter error estimation (Pf) of the error of the measured parameters and / or the estimated parameters. The method further comprises estimating the SOP based on the SOP estimation model (M) of the battery. The invention further relates to a computer program comprising a program code for performing the steps of the method; a computer readable medium carrying the computer program; a control unit (2) for controlling the monitoring of the state of the battery; a battery condition monitoring system; and an electric vehicle including the battery condition monitoring system.

Description

technical field [0001] The present invention relates to a method for robust estimation of the state of power (SOP) of a battery. The invention also relates to a computer program comprising program code for carrying out the steps of the method, a computer-readable medium carrying such a computer program, a control unit for controlling the monitoring of the state of a battery, a system for monitoring the state of a battery and a system comprising such A battery condition monitoring system for electric vehicles. The electric vehicles can be heavy duty vehicles such as trucks, buses and construction equipment, but can also be used in other vehicles such as smaller electric industrial vehicles and cars. Background technique [0002] Electrochemical storage devices as batteries are important in modern energy infrastructures. Many different types of devices rely on battery energy storage. In the transportation industry, batteries have been used for auxiliary purposes in vehicles...

Claims

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Application Information

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IPC IPC(8): G01R31/36B60L58/10H01M10/48H02J7/00
CPCH01M10/48H01M10/486H01M2220/20B60L3/0038B60L3/12B60L2240/545B60L2240/547B60L58/12G01R31/367G01R31/3835G01R31/374G01R31/3647G01R31/006B60L50/60Y02T10/70Y02E60/10H02J7/0048G01R31/389G01R31/3648
Inventor 埃斯特班·杰尔索
Owner VOLVO LASTVAGNAR AB
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