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Energy system for a motor vehicle and method for charging an electrical energy storage device

An electric accumulator and accumulator technology, applied in the field of energy systems, can solve the problems of shortening the charging duration, time-consuming charging process of the accumulator unit, etc., and achieve the effect of the fast charging process

Inactive Publication Date: 2019-11-15
AUDI AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the charging process of the accumulator unit is usually very time-consuming
It is not possible to significantly shorten the charging duration, since the external energy source provided for charging the accumulator unit is limited especially with regard to the charging current

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0046] Other advantages and design solutions of the present invention can be obtained from the specification and examples. The description of the invention is continued below on the basis of exemplary embodiments.

[0047] It is obvious that the features mentioned above and those yet to be explained below can be used not only in the respectively given combination but also in other combinations or alone without departing from the scope of the present invention.

[0048] In an exemplary embodiment, the electric energy store of the motor vehicle has a nominal voltage of 400V. The accumulator has two identical sub-accumulators (or groups), which can be electrically connected in parallel or in series via switching means. The control device actuates the switching device in order to connect the sub-accumulators in parallel or in series. In the operating mode of the motor vehicle, the partial accumulators are connected in parallel via the switching device.

[0049] The calculation ...

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PUM

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Abstract

The invention relates to a method for charging at least one electrical energy storage device of an energy system, in which the energy storage device is divided into at least two identical partial energy storage devices during the duration of a charging process and the partial energy storages devices are connected in series. The invention further relates to an energy system for a motor vehicle, andthe energy system comprises at least one electrical energy storage device which is designed to be reversibly divided into at least two identical partial energy storage devices which are connected inseries, and a charging interface which is connected to the at least one energy storage device for charging the at least one energy storage device by means of an external energy source which provides electrical energy.

Description

technical field [0001] The invention relates to an energy system for a motor vehicle and a method for charging at least one electrical energy store of the energy system. Background technique [0002] An electric vehicle or a hybrid vehicle each has at least one electric energy store, which serves as a propulsion battery and stores electrical energy, which the electric motor of the motor vehicle converts into drive power. In order to maximize the driving range of the vehicle, it is desirable to have as large a charging capacity as possible for the electrical energy storage. [0003] For charging the electrical energy store, such a motor vehicle has at least one electrical charging connection, that is to say at least one electrical connection. Via such a charging interface, the motor vehicle can be coupled to a stationary charging station in order to charge the energy store of the motor vehicle. [0004] Known electric vehicles as well as hybrid vehicles have an electrical c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L50/60B60L53/12B60L53/14
CPCB60L50/60B60L53/12B60L53/14B60L53/11B60L58/19Y02T90/16Y02T10/70Y02T90/14Y02T10/7072Y02T90/12Y02E60/10B60L53/305B60L53/16H01M10/441H02J7/0024
Inventor R·施特拉塞尔
Owner AUDI AG