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Method and device for determining at least one state variable of a storage element for electrical energy

A state parameter and electric energy storage technology, applied in the direction of electrical devices, measuring devices, battery/fuel cell control devices, etc.

Active Publication Date: 2018-01-26
VOLKSWAGEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This creates a measurement gap

Method used

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  • Method and device for determining at least one state variable of a storage element for electrical energy

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Embodiment Construction

[0021] exist figure 1 A motor vehicle electrical system 1 is shown in , which has an electrical system battery 2 and a load 3 . In addition, the vehicle electrical system has a plurality of controllers 4 - 6 which are connected to one another in terms of data via a bus 7 , the controllers 4 - 6 being supplied with voltage for use via the vehicle battery 2 . Furthermore, the controller 4 has a local electrical energy storage element 8 . The storage element 8 is locally associated with a temperature sensor 9 , and the temperature data of the storage element 8 is continuously or intermittently transmitted to the controller 4 . The controller 4 additionally has a position-determining device 10 , which is designed, for example, as a GPS receiver. In addition, the controller 4 is configured with an air connection 11 . In this case, the controller 4 also monitors the charging and discharging process of the storage element 8 . The controller 4 , the temperature sensor 9 and the st...

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Abstract

A method and an apparatus (20) for determining at least one state variable of a storage element (8) for electrical energy having at least one control device (4), at least one storage element (8) for electrical energy, and at least one temperature sensor (9), wherein the temperature sensor (9) detects the temperature of the storage element (8) continuously or periodically, wherein the control device (4) determines the state variable of the storage element (8) at least based on the detected temperature, wherein the control device (4) fills measurement gaps of the temperature sensor (9) using data of a weather service (13-15), the data then is used in the determination of the at least one state variable.

Description

technical field [0001] The invention relates to a method and a device for determining at least one state variable of an electrical energy storage element. Background technique [0002] Knowledge of state variables of the battery is extremely important, for example in order to determine an operating strategy and / or its replacement. Here, the most important state parameters are the state of health (SOH, state of health) and the state of charge (SOC, state of change). [0003] In this case, the storage element can be a galvanic cell, an accumulator or a double layer capacitor. A very important parameter influencing the state variable is the temperature, wherein it generally applies that higher temperatures accelerate aging. Another influencing variable is, for example, the number of charging / discharging cycles, wherein its influence is different for the individual storage elements. This can be taken into account in the corresponding models. [0004] A method is known from W...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36
CPCB60L3/12B60L58/10G01R31/374G01R31/392Y02T10/70G01R31/382G01R31/389B60R16/03G01R31/3644G05B13/026
Inventor M.霍伊泽G.托索
Owner VOLKSWAGEN AG