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Method of monitoring capacitive filter of battery charger

A technology for batteries and capacitors, which can be used in secondary battery charging/discharging, battery/battery traction, capacitor testing, etc., and can solve complex and expensive problems

Active Publication Date: 2014-07-30
RENAULT SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such devices are also highly complex and expensive for simple fault detection

Method used

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  • Method of monitoring capacitive filter of battery charger
  • Method of monitoring capacitive filter of battery charger
  • Method of monitoring capacitive filter of battery charger

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] figure 1 A device 1 for charging a battery 2 of a motor vehicle, which is intended to be connected to a three-phase or single-phase power supply network 3 for the purpose of recharging the battery 2, is schematically shown.

[0033] The device 1 includes a connecting device 4 that makes it possible to connect the charging device 1 to the power supply network 3, a filter stage 5 for filtering the current of the power supply network 3 obtained by the device 1, and a filter stage 5 connected to the filter stage 5. An abatement stage 6 on the output and making it possible to rectify the alternating current obtained from the power supply network 3 and an enhancement stage 7 connected between the abatement stage 6 and the storage battery 2.

[0034] The filter device 5 includes an electromagnetic compatibility (EMC) filter 5a and a capacitor component 5b. For example, the EMC filter 5a is a filter with common mode inductance and capacitance, making it possible to filter the curren...

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PUM

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Abstract

The invention relates to a device (1) for charging a battery (2), in particular a battery of an electric traction automotive vehicle, on the basis of a three-phase or single-phase power supply network (3). The device comprises a filtering stage (5) comprising a capacitive assembly (5b) and intended to be connected to the power supply network (3). The device (1) comprises means (8) for monitoring the capacitive assembly (5b) able to detect a deviation in the value of the capacitance of at least one capacitor (C) of the capacitive assembly (5b) on the basis of the voltages and currents measured across the input terminals (Bls, B2, B3) of the filtering stage (5).

Description

Technical field [0001] The present invention relates to a device for filtering input current from a single-phase or three-phase power supply network of a high-voltage battery charging device, especially a motor vehicle with electric traction, and more specifically to the state of the filtering device Monitoring. Background technique [0002] In a high-voltage battery recharging system, the electrical power of the grid is introduced into the battery through two converters one after the other: a down converter ("decrease") and a boost converter ("boost"). These two converters respectively make it possible to reduce and increase the voltage ratio between the output terminals of the two converters and their input terminals by successively opening and closing a series of switches at a frequency, the frequency being according to the desired Controlled by output current and / or output voltage. [0003] For example, such a recharging system is described in patent application FR2943188, wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L11/18H02J7/00H01M8/04G01R31/02H01M10/44H01M10/48
CPCH01M10/44H01M10/48H01M8/04686B60L3/003B60L3/04B60L2240/529B60L2250/10Y02T90/14H02M1/126Y02T10/92Y02T10/7072B60L53/22B60L50/51G01R31/64H02J7/02H02J2207/20Y02T10/70Y02E60/50Y02E60/10B60L50/40G01R31/50B60Y2400/90B60L58/10Y02T90/12G01R31/3644
Inventor J·马尔里厄
Owner RENAULT SA