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Controllable energy store and method for operating controllable energy store

An energy storage, electric energy storage technology, applied in vehicle energy storage, parallel operation of DC power supply, irreversible DC power input conversion to AC power output and other directions, can solve the problem of battery current flow, energy storage failure, total voltage Advanced problems, to achieve the effect of reducing the number

Active Publication Date: 2013-08-21
ROBERT BOSCH GMBH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In addition to the high total voltage, the series connection of several battery cells brings about the problem that in the event of a failure of a single battery cell, the entire energy store fails, since no battery current can flow anymore
In other applications such as rotor blade adjustment in wind power plants, safety hazards can even arise in unfavorable frame conditions such as strong winds

Method used

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  • Controllable energy store and method for operating controllable energy store
  • Controllable energy store and method for operating controllable energy store
  • Controllable energy store and method for operating controllable energy store

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Embodiment Construction

[0026] figure 1 with image 3 A schematic diagram of an implementation form of the controllable energy storage device according to the present invention is shown. The controllable energy storage 2 is connected to the three-phase motor 1. The controllable energy storage 2 comprises three energy supply branches 3-1, 3-2 and 3-3, which are connected on the one hand to a reference potential T- (reference bus), which leads low in the embodiment shown. The electric potential, on the other hand, is connected to each phase U, V, W of the motor 1 respectively. Each of the energy supply branches 3-1, 3-2 and 3-3 has m energy storage modules connected in series 4-11 to 4-1m or 4-21 to 4-2m or 4-31 to 4-3m , Where m≥2. The energy storage module 4 in turn includes a plurality of electric energy storage units connected in series, and the electric energy storage units are only partially equipped with reference numerals 5-11, 5-21, and 5-31 to 5-3 for reasons of clarity. . The energy stora...

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Abstract

The invention relates to a controllable energy store (2) with n parallel energy supply branches (3-1, 3-2, 3-3), where n >= 1, each of which comprises at least two serially connected energy storage modules (4). Each energy storage module comprises at least one electric energy storage cell (5) having an associated controllable coupling unit (6). The coupling units (6) bridge the associated power storage cells (5) in accordance with control signals or connect the associated energy storage cells to the respective energy storage branch (3-1; 3-2; 3-3). At least one energy storage module (4-11; 4-21; 4-31) is designed such that it has reduced switching losses, reduced in particular by at least 10% compared to the other energy storage modules (4) in the respective power supply branch (3-1; 3-2; 3-3).

Description

Technical field [0001] The invention relates to a controllable energy storage device and a method for operating the controllable energy storage device. Background technique [0002] It appears that in the future, electronic systems that combine new energy storage technology and electric drive technology will be increasingly used not only in static applications such as wind power generation equipment, but also in vehicles such as hybrid vehicles or electric vehicles. In conventional applications, for example, a motor implemented as an induction motor is controlled by a converter in the form of an inverter. Characteristic for this kind of system is the so-called DC voltage intermediate circuit through which the energy storage (usually a battery) is connected to the DC voltage side of the inverter. In order to meet the requirements for power and energy for corresponding applications, multiple battery cells are connected in series. Since the current provided by such an energy stora...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H02M7/44H02J7/14H02M7/483
CPCH02J7/0024H02J7/1492H02M7/483Y02T10/92B60L58/18B60L58/21H02J2207/20H02J2310/48H02J2300/28H02J7/0025Y02T10/70H02M7/4835H02M7/49H02J7/00H02J7/14H02M7/44Y02E10/76H02J1/10
Inventor M·凯斯勒P·福伊尔施塔克E·魏森博恩
Owner ROBERT BOSCH GMBH
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