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Method and device for protecting a lithium ion battery in a vehicle

A technology for lithium-ion batteries and motor vehicles, which is applied in the field of lithium-ion batteries and can solve problems such as irreversible damage to batteries

Inactive Publication Date: 2012-01-25
AUTO KABEL MANAGEMENTGMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This causes irreversible damage to conventional batteries and must be replaced

Method used

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  • Method and device for protecting a lithium ion battery in a vehicle
  • Method and device for protecting a lithium ion battery in a vehicle

Examples

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Embodiment Construction

[0028] In the method according to the invention, the lithium-ion battery 1 is automatically monitored by the battery electronics 2 in the electrical system 4 of the motor vehicle, not shown in detail.

[0029] The battery electronic device 2 automatically monitors the parameters and / or working status of the lithium-ion battery 1 through the detection unit 6 . The current value, voltage value, temperature value and / or battery internal pressure are determined as at least one of the aforementioned parameters of the lithium-ion battery 1 by the battery electronics system 2 .

[0030] The current value of the lithium-ion battery 1 is measured using, for example, a so-called shunt resistance. That is to say, the current flowing through the electrical system 4 , in particular through the motor vehicle ground, into the lithium-ion battery 1 is routed through a shunt resistor, wherein a voltage drop occurs across the shunt resistor, which voltage drop corresponds to proportional to th...

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Abstract

The invention relates to a method for protecting a lithium ion battery (1) in a vehicle. According to the invention, the lithium ion battery (1) is disconnected when an on-board power supply (4) of a vehicle is thermally and / or electrically overloaded. The invention further relates to a device for protecting a lithium ion battery (1) in a vehicle.

Description

technical field [0001] The invention relates to a method for protecting a lithium-ion battery in a motor vehicle according to the preamble of claim 1 . Furthermore, the invention relates to a device according to the preamble of claim 4 for carrying out the aforementioned method. Background technique [0002] Under heavy load conditions, or when overloaded (for example, in the case of excessive loading or excessive discharge current, such as in the case of a short circuit), in the case of damage (for example, accident, electrolytic decomposition), or even under normal operating conditions When heated strongly from the outside, the traditional battery will fall into a thermally uncontrollable state. This results in overheating of the battery and builds up internal pressure (also referred to as battery internal pressure) which creates a risk of rupture or explosion of the battery and casing, thereby releasing harmful substances. Particularly in the emerging field of lithium b...

Claims

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Application Information

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IPC IPC(8): H01M10/48H01M10/0525
CPCH01M10/486H01M10/0525Y02E60/122Y02T10/7011H01M10/48Y02E60/10Y02T10/70
Inventor 赖纳·法尔塞特赖纳·梅克尔托马斯·舒尔茨
Owner AUTO KABEL MANAGEMENTGMBH
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