Method for heating a battery and control unit as well as a vehicle

The method using a pulse inverter with frequency patterns addresses the inefficiency and animal attraction issues of high-voltage batteries by heating and deterring martens, ensuring efficient temperature rise and protection.

DE102024204382B4Active Publication Date: 2026-01-08VOLKSWAGEN AG
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Patent Information

Application Number
DE102024204382
Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
Filing Date
2024-05-10
Publication Date
2026-01-08
Estimated Expiration
2044-05-10

AI Technical Summary

Technical Problem

High-voltage batteries in vehicles experience reduced discharge and charge capacity at low temperatures, leading to inefficient heating of the internal active material, and attract animals like martens, causing potential damage due to heat generation, which existing heating methods fail to address effectively.

Method used

A method using a pulse inverter to supply discharge and charging currents with specific frequency patterns (10 kHz to 100 kHz) to heat the battery, with a deterrent effect on animals, and an additional lower frequency pattern for efficient heating in protected environments.

Benefits of technology

Effectively heats the battery while deterring animals, ensuring efficient temperature rise and preventing damage, without human perception, and reducing animal attraction.

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Abstract

The invention relates to a method for heating a battery (1) of a vehicle (2), wherein the battery (1) is periodically supplied with a discharge current and a charging current by controlling a pulse inverter (3) connected to the battery (1) by means of a predetermined first pulse pattern (4), wherein a first frequency of the first pulse pattern (4) is between 10 kHz and 100 kHz.
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