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Method and device for determining operating temperature, operating method for battery cell, control unit for battery cell, and working device

A battery unit and operating temperature technology, applied in battery/fuel cell control devices, battery/battery traction, application of thermometers, etc., can solve the problems of battery unit energy loss, temperature determination, etc.

Active Publication Date: 2019-11-15
BAYERISCHE MOTOREN WERKE AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004]However, using battery cell impedance is related to energy loss
On the other hand, for its high reliability, the impedance-based temperature determination cannot be dispensed with

Method used

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  • Method and device for determining operating temperature, operating method for battery cell, control unit for battery cell, and working device
  • Method and device for determining operating temperature, operating method for battery cell, control unit for battery cell, and working device
  • Method and device for determining operating temperature, operating method for battery cell, control unit for battery cell, and working device

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Embodiment Construction

[0030] Next refer to Figure 1 to Figure 3 Various embodiments and technical backgrounds of the present invention are described in detail. Identical and equivalent and identically acting or equivalently acting elements and components are designated with the same reference numerals. Detailed descriptions of the depicted elements and components are not repeated in every instance in which they appear.

[0031] The features and other properties shown can be isolated from one another in any desired form and combined with one another in any desired way without departing from the spirit of the invention.

[0032] figure 1 A schematic block diagram of a device 1 according to the invention for determining the operating temperature of a battery cell 10 is shown.

[0033] according to figure 1 The device 1 according to the invention has an impedance measuring device 40 and a temperature measuring device 30 .

[0034] The temperature measuring device 30 is connected via a detection a...

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Abstract

The invention relates to a method for determining an operating temperature of a battery cell (10), in particular in an electrically operable working device or a vehicle, in which method (i) a value ofa measurand for determining an external temperature of the battery cell (10) is detected - in particular continuously or continuously in sections - close to and externally of the battery cell (10), (ii) an internal temperature of the battery cell (10) is determined by detecting an electrical impedance of the battery cell (10), and (iii) a value of the operating temperature of the battery cell (10) is determined from the external and / or the internal temperature, wherein (A) the internal temperature of the battery cell (10) at least in a first operating state of the battery cell (10) is determined more frequently when the value of the ascertained external temperature, the internal temperature and / or the operating temperature of the battery cell (10) lies within a predefined first safe range(55), and (B) is determined less frequently when the value of the ascertained external temperature, the internal temperature and / or the operating temperature of the battery cell (10) lies outside thepredefined first safe range (55).

Description

technical field [0001] The invention relates to a method and a device for determining the operating temperature of a battery cell, an operating method for a battery cell, a control unit for a battery cell, and an operating device, in particular a vehicle. Background technique [0002] When operating battery cell-based electrical devices, ie when using accumulators and battery cell modules, the operating temperature of the individual battery cells is an important parameter for operation, also with regard to efficiency and operating safety. [0003] The corresponding operating temperature within the battery cell can be directly measured at a costly manner. In order to reduce the effort, however, indirect measuring methods are used, firstly by using external sensors referenced to the respective battery cell and / or by measuring the impedance of the respective battery cell. [0004] However, using the impedance of the battery cell is associated with energy loss. On the other ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/48G01R31/382G01R31/389G01K13/00
CPCH01M10/486H01M10/635G01R31/389G01R31/374Y02E60/10B60L50/66B60L58/10B60L2240/36H01M2220/20
Inventor J·P·施密特J·米勒H·策恩特纳
Owner BAYERISCHE MOTOREN WERKE AG
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