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System for charging motor vehicle batteries

A technology for motor vehicles and batteries, applied in electric vehicle charging technology, battery circuit devices, charging stations, etc., can solve the problem of not providing good performance of low-power single-phase networks, and achieve increasing power factor, reducing filter capacitance, and reducing power consumption. The effect of work current

Active Publication Date: 2017-05-31
RENAULT SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it does not provide good performance on low power single phase networks

Method used

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  • System for charging motor vehicle batteries
  • System for charging motor vehicle batteries
  • System for charging motor vehicle batteries

Examples

Experimental program
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Embodiment Construction

[0045] figure 1 A system for charging a motor vehicle battery 4 is shown. This charging system comprises a filter stage 2 , a rectifier stage 3 , an induction stage 5 and an inverter stage 6 . The charging system is intended to be connected via a filter stage 2 to an electricity supply network 1a / 1b. This electricity supply network may be a first polyphase high power (above 3kW) electricity supply network 1a or a second single phase or multiphase low power (below 3kW) electricity supply network 1b. The charging system is shown connected to the electricity supply network 1a. The electricity supply network 1 a shown here comprises three phases 11 , 12 and 13 and a neutral conductor 14 . The not shown power supply network 1 b is for example a single-phase network comprising one phase 13 and one neutral 14 . The charging system is also intended to be connected to the battery 4 via an inverter stage 6 . The filter stage 2 , the rectifier stage 3 , the induction stage 5 and the...

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Abstract

A motor vehicle accumulator (4) intended to be connected to a first polyphase electric power supply network (1a) or to a second polyphase or single-phase electric power supply network (1b) whose power is lower than that of the first network A charging system comprising: - a filter stage (2) comprising capacitors (21, 22, 23); - a first rectifier stage (3) comprising switches; and - an inverter stage (6 ), intended to connect to the battery (4). The charging system comprises: - a second rectifier stage (8) comprising switches and intended to be connected to said electricity supply network in parallel with the filter stage (2) and at least part of the first rectifier stage (3) (1a, 1b) and the accumulator (4); and - a capacitor (7), whose capacitance is lower than that of the capacitors (21, 22, 23) of the filtering stage (2), connected between the two phase (11, 13) or between a phase and a neutral wire (13, 14) of the second power supply network (1b).

Description

technical field [0001] The invention relates to the technical field of charging motor vehicle accumulators, in particular extraction accumulators of electric motor vehicles. Background technique [0002] There are charging systems that can be connected to various types of electrical networks (different number of phases, variable power). [0003] However, the respective constraints of these networks are not very compatible and it is very difficult to obtain good energy efficiency for each type of electrical network. [0004] For example, application FR 2943188 discloses a battery charging system comprising a rectifier input stage intended to be connected to an electricity supply network and an inverter output stage intended to be connected to a battery. The device comprises means for regulating the average current originating from the input stage around a current value prepared by the maximum current supplied by the electricity supply network and based on a coefficient at le...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/02B60L11/18H02M1/10
CPCH02J7/022H02M1/10B60L53/00H02J7/02H02J2207/20Y02T10/70Y02T10/7072Y02T90/14
Inventor C·里波尔J·J·迪朗O·雷斯C·科纳特E·屈耶O·普罗伊科斯
Owner RENAULT SA