Apparatus for providing voltage with serial group converter, and drive arrangement
A voltage and voltage division technology, applied in electrical devices, inverters with reversible devices, circuit devices, etc., can solve problems such as increasing battery cost and system complexity, increasing battery difficulty, and failing to eliminate scaling effects.
Inactive Publication Date: 2016-02-10
SIEMENS AG
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- Application Information
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Problems solved by technology
Therefore, high battery system voltages require a large number of series-connected battery modules or cells, and thus complicate optimal design of the battery, which can result in oversized batteries and additionally increase battery cost and system complexity
In addition, through the series circuit, the requirements on the design of the battery management system (BMS), safety and energy storage modules are increased, which in turn increases the cost
[0011] On the other hand, connecting battery modules purely in parallel requires operation at low battery system voltages, however, low battery system voltages lead to high battery currents at high power, resulting in excessive high currents between batteries and consumers. power loss
Implementation is technically time-consuming and expensive
Also, scaling effects are not removed here
The battery module is also a large and complex overall system
Method used
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[0034] The example set forth below is a preferred embodiment of the invention. In this exemplary embodiment, however, the described components of the embodiment are each individual features of the invention which should be considered independently of one another, which also respectively improve the invention independently of one another, and can therefore also be used individually or in combination with all Another combination different from the ones shown is considered as an integral part of the present invention. Furthermore, the described embodiments can also be supplemented by other already described features of the invention.
[0035] Figure 2 shows a drive arrangement 1 according to the prior art. The drive arrangement 1 includes a battery system 10 , in particular a high-voltage battery, which is formed from a series connection of battery submodules 13 . On each battery submodule 13 there is a battery submodule voltage U M , this voltage is added to form the battery ...
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The invention relates to an apparatus (2) for supplying voltage, including a battery system (10) supplying battery system voltage (US), and at least two voltage converter modules (20) electrically connected with the battery system (10), wherein the battery system (10) at least comprises two serially-connected battery submodules (13), with each of the battery submodules being supplied battery submodule voltage (UM). Each of the voltage converter modules is applied with component voltage (UT) of the battery system voltage (US). The component voltage (UT) of the battery system voltage can supply electricity for electric assemblies connected with the corresponding voltage converter modules (20). Each voltage converter module (20) is electrically connected with one of the battery submodules, so that each of the voltage converter module is applied with battery submodule voltage (UM) used as the component voltage (UT).
Description
technical field [0001] The invention relates to a device for supplying a voltage with a battery system for supplying a battery system voltage, wherein the battery system comprises at least two battery submodules connected in series, wherein on each of the battery submodules The battery sub-module voltage is applied, and there are at least two transformer modules electrically connected to the battery system, wherein a partial voltage of the battery system voltage is applied to each of the transformer modules, and the battery system voltage can be Power is supplied by consumers connected to the corresponding transformer modules. The invention also relates to a drive arrangement. Background technique [0002] The device for supplying voltage usually includes an electrical energy store, which can be designed, for example, as a battery system. Such battery systems can be used to supply energy to consumers such as electric motors. Such an electric machine can be arranged, for e...
Claims
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IPC IPC(8): H02J7/00H02M7/72
CPCB60L15/007B60L3/003B60L3/0046B60L3/12B60L15/2009B60L2220/44B60L2240/547B60L2240/549B60L2260/28B60L2240/527Y02T10/72B60L50/51B60L58/19B60L58/22H02J2207/20B60L58/18B60L58/12Y02T10/64Y02T10/70
Inventor 德拉甘·米库莱茨蒂穆尔·维尔纳沃尔夫冈·魏丹茨
Owner SIEMENS AG