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On-board safety system for charging the battery of a motor vehicle from the power supply network

A technology of power supply network and security system, applied in the field of user security of in-vehicle equipment

Active Publication Date: 2016-10-19
RENAULT SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the implementation of such an approach requires a system that is too large for incorporation into the vehicle and capable of imposing voltage on the network

Method used

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  • On-board safety system for charging the battery of a motor vehicle from the power supply network
  • On-board safety system for charging the battery of a motor vehicle from the power supply network
  • On-board safety system for charging the battery of a motor vehicle from the power supply network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] figure 1 A security system 1 according to an embodiment of the invention is shown. The safety system 1 is on a motor vehicle and is intended to be coupled between a power supply network 2 and a battery 3 of the motor vehicle when the battery is charged.

[0043] The system 1 comprises means 4 for measuring the frequency of the supply network 2 and means 5 for injecting current pulses into the supply network 2 . The device 4 for measuring frequency is coupled to the device 5 for injecting current pulses in such a way that the frequency value of the supply network 2 is fed to the device 5 for injecting current pulses. The means 5 for injecting current pulses adjust the minimum duration of these pulses to the period T of the signal from the supply network 2 . In the case of a 50 Hz supply network 2, the minimum duration of these current pulses will be 1 ms.

[0044] The system 1 also comprises means 6 for measuring the voltage between the earth and neutral conductors of...

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PUM

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Abstract

The invention relates to a safety system (1) for charging a battery (3) of a motor vehicle by a power supply network (2), the system being placed on the motor vehicle and comprising a frequency for measuring the network (2) means (4), injection means (5) for injecting current pulses into the network (2), means (6) for measuring the voltage between earth and neutral of the network (2), An analog filter (7) for filtering the measured voltages at high frequencies, a digital filter (8) for filtering the analog filtered voltages at low frequencies, and a Means (9) for determining the resistance between earth and neutral of the network (2) from the filtered voltage and magnitude of these current pulses. The digital filter (8) includes an average filter that determines an average value based on N voltage measurements spaced by a time interval T+T / N, where T is the frequency used to measure the supply network (2) The period of the power supply network (2) determined by the device (4).

Description

technical field [0001] The present invention relates to the safety of users of on-board equipment for charging the battery of a motor vehicle, and more particularly to estimating the quality of the ground wire of the power supply network connected to the equipment for charging the battery of a motor vehicle. Background technique [0002] During the charging of the battery of an electric motor vehicle, an intense current travels through the power supply network towards the battery of the vehicle. In order to be able to charge the vehicle correctly, these currents are chopped in such a way as to comply with the constraints of the supply network. [0003] The chopping of these currents leads to the occurrence of leakage currents which have to be eliminated via the ground connection of the supply network. This ground connection is connected to the chassis of the vehicle and thus provides a path for any unwanted electrical currents. [0004] In order to ensure a completely safe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R27/20G01R31/00G01R31/02
CPCG01R27/205G01R31/007B60L3/00H02J7/02Y02T10/7072Y02T90/14Y04S30/14B60L53/14B60L53/665H02J7/0029G01R31/52H02J2310/48Y02T10/70Y02T90/12Y02T90/167H02J5/00Y02T90/16
Inventor L·梅里耶纳A·凯特菲-谢里夫C·里波尔C·科纳特
Owner RENAULT SA