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Energy storage device and system having an energy storage device

An energy storage device, energy storage technology, applied in output power conversion devices, irreversible DC power input to AC power output, electrical components, etc., can solve branch line faults, reduce BDI efficiency, high conduction loss, etc. problems, to achieve accurate and flexible adjustment, improve total supply capacity, and optimize the effect of availability

Active Publication Date: 2015-11-11
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 having an energy storage device
  • Energy storage device and system having an energy storage device
  • Energy storage device and system having an 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 which is designed to provide and / or receive electrical energy in the form of an n-phase current and an n-phase voltage, where n ≥ 1. The energy storage device comprises n energy supply branches, wherein each of the energy supply branches has a multiplicity of energy storage modules connected in series. The energy storage modules each comprise an energy storage cell coupling module with coupling module connections and a coupling device with coupling elements which are designed to selectively connect the energy storage cell module to the particular energy supply branch via the coupling module connections or to circumvent the energy storage cell module in the particular energy supply branch. Each of the energy storage cell coupling modules in turn has a line of coupling modules with a multiplicity of energy storage cell branch modules which are connected in series and have an energy storage cell branch with a series circuit comprising an energy storage cell branch coupling element and at least one energy storage cell and a circumvention branch coupling element which is connected in parallel with the energy storage cell 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 Applications(China)
IPC IPC(8): H02M7/49
CPCH02M7/49H02M2007/4835H02M7/4835
Inventor W.扎哈里A.施密特
Owner ROBERT BOSCH GMBH
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