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Method for monitoring a capacitor filter of a battery charger

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

Active Publication Date: 2016-08-17
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 for monitoring a capacitor filter of a battery charger
  • Method for monitoring a capacitor filter of a battery charger
  • Method for monitoring a capacitor filter of a battery charger

Examples

Experimental program
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Embodiment Construction

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

[0033] The device 1 comprises connection means 4 making it possible to connect the charging device 1 to the supply network 3 , a filter stage 5 for filtering the current of the supply network 3 picked up by the device 1 , a filter stage 5 connected to the filter stage 5 An abatement stage 6 at the output and making it possible to rectify the alternating current obtained from the supply network 3 , and a booster stage 7 connected between the abatement stage 6 and the accumulator 2 .

[0034] The filtering device 5 includes an electromagnetic compatibility (EMC) filter 5a and a capacitor assembly 5b. For example, the EMC filter 5 a is a filter with common mode inductance and capacitance, making it possible to filter the current pulses generated by the transist...

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Abstract

A device (1) for charging an accumulator (2), in particular an accumulator of an electric traction motor vehicle, based on a three-phase or single-phase supply network (3), comprising a filter stage (5), the filter stage A capacitive assembly (5b) is included and intended to be connected to the supply network (3). The device (1) comprises means (8) for monitoring the capacitive assembly (5b) capable of the voltages and currents measured at the input terminals (B1, B2, B3) of the filter stage (5) Basically, the capacitance value of at least one capacitor (C) of the capacitance component (5b) is detected.

Description

technical field [0001] The invention relates to a device for filtering the input current of a high-voltage battery charging device, in particular a motor vehicle with electric traction, from a single-phase or three-phase power supply network, and more particularly to the status of the filter device monitoring. Background technique [0002] In high-voltage battery recharging systems, electrical power from the grid is introduced into the battery successively via two converters: a step-down converter ("cutting") and a step-up converter ("boosting"). These two converters respectively make it possible to lower and raise 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 according to the desired output current and / or output voltage to control. [0003] Such a recharging system is described, for example, in patent application FR 2 943 188, which concerns an embedded...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L11/18H02J7/00G01R31/02H01M10/44H01M10/48
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