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Battery comprising an integrated pulse width modulation inverter

A pulse inverter and storage battery technology, applied in the field of storage batteries, can solve problems such as increasing the cost of storage batteries 10

Active Publication Date: 2012-12-26
ROBERT BOSCH GMBH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The protective relays 18 , 19 and the load protective relay 20 significantly increase the costs of the accumulator 10 because of the high demands placed on its reliability and on the current conducted by it

Method used

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  • Battery comprising an integrated pulse width modulation inverter
  • Battery comprising an integrated pulse width modulation inverter
  • Battery comprising an integrated pulse width modulation inverter

Examples

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Embodiment Construction

[0022] image 3 A first embodiment of the invention is shown. A battery pack 31 , a buffer capacitor 32 and a pulse inverter 33 are integrated in the battery 30 , a possible protective relay for separating the positive and negative poles of the battery pack being omitted. Advantageously, the pulse inverter 33 is configured to connect all its outputs to high when, for example, the battery 30 should be replaced and thus should be separated from the drive motor or the like connected to the pulse inverter 33 resistance. In this way, the accumulator 30 is completely de-energized to the outside, so that no dangerous potential can be output.

[0023] Figure 4 A second embodiment of the invention is shown. The battery 40 has a plurality of battery packs, in the example shown three battery packs 41 - 1 , 41 - 2 , 41 - 3 . Battery 40 can also have two or more than three battery packs. The number of three storage battery packs is advantageous because it enables a simple connection...

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PUM

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Abstract

The invention relates to a battery (30, 40) comprising at least one battery cell line (31, 41). The at least one battery cell line (31, 41) comprises a plurality of battery cells mounted in series between a respective positive battery pole and a respective negative battery pole. According to the invention, the battery (30, 40) comprises a pulse width modulation inverter (33, 43) integrated into the battery (30, 40), at least one first and one second input, and at least one output, the first and second inputs being connected to the positive battery pole or the negative battery pole. The invention also relates to a motor vehicle comprising an electric drive motor (13) for driving the motor vehicle and said battery (30, 40) connected to the electric drive motor (13).

Description

technical field [0001] The invention relates to a battery with an integrated pulse inverter and an electric vehicle with such a battery. Background technique [0002] In the future, more battery systems will be applied, both in static applications and in vehicles such as hybrid and electric vehicles. In order to be able to meet the required voltage and power requirements for the respective application, a relatively high number of battery cells is connected in series. Since the current provided by such a battery has to flow through all battery cells, and a battery cell can only conduct a limited current, the battery cells are usually additionally connected in parallel in order to increase the maximum current. This can be achieved by arranging further cell packs within the battery cell housing or by connecting the battery cells externally. What is problematic here, however, is that equalizing currents occur between battery cells connected in parallel because the cell capacit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L11/18
CPCY02E60/12B60L11/1855B60L11/1864H02M7/44B60L11/1879H01M10/5004Y02T10/7005B60L11/1853H01M10/5016B60L11/1874Y02T10/7061B60L15/007H01M10/48Y02T10/7011H01M10/625H01M10/613B60L58/18B60L58/19B60L58/21B60L58/26B60L50/64Y02T10/64Y02T10/70Y02E60/10H02J7/00
Inventor S·布茨曼H·芬克
Owner ROBERT BOSCH GMBH
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