Power storage device for hybrid or electric motor vehicles, and associated electric power management method

A technology for hybrid and motor vehicles, which is applied to the arrangement of multiple different prime movers and power units of hybrid vehicles and general power plants, and can solve the problems of low power, high power, and weak power storage capacity, and achieve reduction in power. effect of small weight

Inactive Publication Date: 2011-06-01
PEZHO SITROEN AUTOMOBILS SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, the more active the material covering the electrodes of the battery, the better its storage capacity and the greater its internal resistance, resulting in less power delivered
On the contrary, the less active the material covering the electrodes of the battery is, the weaker its power storage capacity is, and the lower its internal resistance is, resulting in higher power delivered.
[0008] However, because the internal resistance of the electrochemical storage battery is quite high, it is necessary to use many batteries to meet the power requirements of the vehicle, which causes the problem that the storage battery is too large

Method used

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  • Power storage device for hybrid or electric motor vehicles, and associated electric power management method
  • Power storage device for hybrid or electric motor vehicles, and associated electric power management method
  • Power storage device for hybrid or electric motor vehicles, and associated electric power management method

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Embodiment Construction

[0040] figure 1 There is shown an electrical energy storage device 1 comprising a HVDC line 2 connected to an electric traction system of a vehicle, such as an electric motor, and / or to an on-board electrical system of said vehicle.

[0041] A first power storage element 3 is connected to the power transmission line 2 . A second energy storage element 4 is connected to the power line 2 via a galvanic coupling 5 . The second power storage element 4 is connected to the transmission line 2 in parallel with the first element 3 through an electrical coupling mechanism 5 .

[0042] The coupling mechanism 5 is a reversible DC / DC converter, ensuring that the voltage value of the first storage element 3 is converted to be compatible with the voltage value of the second storage element 4, and vice versa.

[0043] In one embodiment of the present invention, a power storage element 3 or 4 with a smaller internal resistance and a power storage element 3 or 4 with a larger capacitance are...

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PUM

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Abstract

The invention essentially relates to an electric power storage device (1) for hybrid or electric motor vehicles, comprising: a high voltage power supply bus (2) to be connected to an electric traction system (7) and / or to an onboard electric power system, and a first electric power storage element (3) connected to said power supply bus (2). According to the invention, a second storage element (4) is connected to the bus (2) via an electric coupling member (5), said second storage element (4) being connected to the bus (2) in parallel relative to the first storage element (3). One of the two storage elements (3, 4) includes an electrochemical battery, while the other storage element (3, 4) includes an ultracapacitor.

Description

technical field [0001] The invention relates to an electric energy storage device and an electric energy management method of a hybrid or electric motor vehicle. The object of the invention is in particular to improve the combination of cost, performance and lifetime of such an electrical energy storage device. Background technique [0002] Hybrid vehicles include a heat engine that is used in conjunction with an electric traction system, such as an electric motor. The general principle of operation of this type of vehicle is to either run only the electric motor (pure electric mode), at which time the speed of the vehicle is below a threshold (e.g. around 60 km / h), especially in urban areas, or It is to only make the thermal engine run (thermal mode), and the speed of the vehicle is higher than the threshold value at this time, and it is outside the urban area. [0003] When the vehicle is pulled by the electric motor, it extracts energy from the energy storage device. I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W20/00B60W30/18H02J1/10H02J7/00H02J7/34H02J15/00H02K47/06H02K47/16B60K6/28B60W10/06B60W10/08B60W10/26
CPCB60K6/28B60W20/00B60W10/06B60W10/26Y02T10/6278B60Y2400/114Y02T10/6286B60Y2400/112B60W10/08B60W20/13B60W2510/244Y02T10/62
Inventor G·谢鲁夫里耶
Owner PEZHO SITROEN AUTOMOBILS SA
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