Energy storage device and system with energy storage device

An energy storage device and energy storage technology, applied in the direction of output power conversion device, irreversible DC power input to AC power output, electrical components, etc., can solve the problem of reducing BDI efficiency, branch line failure, high conduction loss, etc. problems, to achieve the effect of improving the total supply capacity, accurate and flexible adjustment, and availability optimization

Active Publication Date: 2018-02-23
ROBERT BOSCH GMBH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Rigid series connection of multiple battery modules causes the problem that if a single battery module fails, the entire spur fails
[0011] BDIs with a large number of coupling elements often have high conduction losses, which reduce the performance of the BDI especially at high load currents

Method used

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  • Energy storage device and system with energy storage device
  • Energy storage device and system with energy storage device
  • Energy storage device and system with energy storage device

Examples

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Embodiment Construction

[0033] figure 1 A system 100 for voltage conversion of a DC voltage provided by an energy storage module 3 into an n-phase AC voltage is shown. The system 100 comprises an energy storage device 1 with energy storage modules 3 connected in series in an energy supply branch, whereby electrical energy can be drawn through the energy storage device 1 in the form of n-phase currents and n-phase voltages offer and / or receive. Exemplarily, in figure 1 shows three energy supply branches Z1 , Z2 and Z3 , which are suitable for generating a three-phase alternating voltage, for example for a three-phase alternating current motor. However, it is clear that any other number of energy supply branches is also possible. The energy storage device 1 has an output terminal 1 a , 1 b , 1 c at each energy supply branch, which is connected to a phase line 2 a , 2 b or 2 c respectively, which couples the energy storage device 1 to the electric machine 2 . Exemplarily, figure 1 The system 100 in...

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Abstract

The invention relates to an energy storage device designed to supply and / or receive electrical energy in the form of n-phase currents and n-phase voltages, where n≧1. The energy storage device comprises n energy supply branches, wherein each of the energy supply branches has a large number of energy storage modules connected in series. The energy storage modules each comprise an energy storage unit coupling module with coupling module terminals and a coupling device with a coupling element designed to selectively connect the energy storage unit modules via the coupling module terminals. into the corresponding energy supply branch or bypass the energy storage unit module in the corresponding energy supply branch. Each of the energy storage unit coupling modules further includes a coupling module branch line with a large number of energy storage unit branch modules connected in series, the energy storage unit branch module having a structure consisting of an energy storage unit branch coupling element and at least one energy storage unit The energy storage unit branch of the series circuit and the bypass branch coupling element connected in parallel with the energy storage unit branch.

Description

technical field [0001] The invention relates to an energy storage device, in particular an energy storage device with a modular battery system for any stationary and mobile application, and a system with an energy storage device. Background technique [0002] It appears that in the future electronic systems will be increasingly used not only in stationary applications, such as wind power plants or solar installations, but also in vehicles, such as hybrid or electric vehicles, which integrate elements of the power electronics integrated into the energy storage system. [0003] The feeding of the multiphase current into the electric machine is usually carried out by means of a converter in the form of a pulse inverter. For this purpose, the direct voltage provided by the direct voltage intermediate circuit can be converted into a multiphase alternating voltage, for example a three-phase alternating voltage. The direct voltage intermediate circuit is fed here by a branch line...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/49
CPCH02M7/49H02M7/4835
Inventor W.扎哈里A.施密特
Owner ROBERT BOSCH GMBH
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