Method for managing load supplied by converter that is itself supplied by battery, and corresponding system

A converter and battery technology, applied in battery/battery traction, irreversible DC power input conversion to AC power output, battery/fuel cell control devices, etc., can solve the problem of increasing resistors, increasing impedance, and long duration And other issues

Inactive Publication Date: 2016-03-16
RENAULT SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The downside of this system is that it does not fully charge the capacitors and the charge lasts too long
Another disadvantage of this system is the addition of resistors in series with the system
The downside of this solution is that it increases the impedance of the branch circuit including the capacitor
[0010] Finally, reference may be made to French patent application FR2923962, which describes a system for precharging capacitors using a step-up power converter, but which still has the disadvantage of increasing the impedance of the branch circuit comprising the capacitor
Therefore, this system is also impossible to use in the operation of the car, due to the excessive losses caused by the increase of the impedance

Method used

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  • Method for managing load supplied by converter that is itself supplied by battery, and corresponding system
  • Method for managing load supplied by converter that is itself supplied by battery, and corresponding system
  • Method for managing load supplied by converter that is itself supplied by battery, and corresponding system

Examples

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Embodiment Construction

[0037] In Fig. 1 a system for managing load according to the prior art is schematically shown. The system can be integrated in electric or hybrid vehicles.

[0038] The system includes a battery 1, and the battery 1 includes, for example, a plurality of battery modules, which can be connected in series so that the voltage across the battery is equal to the sum of the voltages across each of the connected modules. The modules of the battery can be switched.

[0039] The system also includes a capacitor 2 , the two plates of which are connected to the positive and negative terminals of the battery 1 . In prior art solutions, the capacitor 2 is precharged in order to protect the capacitor 2 as well as other components, for example when starting the vehicle (when connecting the battery 1 ) or when switching in or switching on a battery module.

[0040] The capacitor 2 is also connected with the transmission system 3, and the transmission system 3 includes: a converter 4, here an...

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PUM

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Abstract

A method for managing a load supplied by a converter that is itself supplied by a battery, and corresponding system. A method and corresponding system for managing a load supplied by a converter that is itself supplied by a battery comprising modules that can be switched, a capacitor being disposed between the battery and the converter. The method comprises: detecting a switching command (E01), if a switching command is detected, the converter supplies a low power to the load (E02), carrying out the switching (E03), if the switching is carried out, the converter supplies a normal power to the load (E04). The invention is applicable to the management of power trains of motor vehicles having electric or hybrid traction.

Description

technical field [0001] The present invention relates to systems equipped with batteries, in particular to systems equipped with batteries consisting of battery modules arranged in series, in particular electric or hybrid vehicles. Background technique [0002] Typically, in these systems, a power converter is used to supply the load with power from the DC power available from the battery. Specifically, the converter can be used as an inverter to provide a sinusoidal current, eg, three-phase current, to the motor. The inverter and the electric motor constitute the transmission system. [0003] A battery may consist of a plurality of battery modules arranged in series, and the modules may be placed independently in series or not, ie may be switched. That is, a greater or lesser number of battery modules are activated according to the voltage desired to be supplied to the load. During operation of the system, the voltage across the battery changes accordingly. [0004] Typi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/5387H02M1/32
CPCB60K6/28B60L50/60H02M1/32H02M7/5387Y02T10/70Y02T10/72Y02T10/92B60L2210/42B60L2270/20B60L50/66B60L58/18H02M7/44
Inventor O·拉德哈里A·L·布伊-旺
Owner RENAULT SA
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