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Energy accumulator device

A technology for energy storage and equipment, which is applied in secondary battery repair/maintenance, electrochemical generators, battery parallel conversion, etc. It can solve the problems of complex structure of DC/DC converters, expensive power electronic components, and high cost of voltage conversion. Achieve the effect of reducing structural space requirements, reducing costs, and optimizing control

Active Publication Date: 2018-03-30
HELLA KG HUECK & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The construction of the DC / DC converter is complex and complex, that is to say the DC / DC converter has relatively large, heavy and expensive power electronics components
[0005] Due to the complexity of the DC / DC converter and the required power design, the cost of voltage conversion is high

Method used

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Examples

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Embodiment Construction

[0033] figure 1 The electrical circuit of the multivoltage vehicle electrical system 1 is shown. Multi-voltage on-board power grid 1, as in figure 1 As shown in , the dual-voltage vehicle electrical system has two voltage ranges 2 , 3 which are separated by a DC / DC converter 4 . exist figure 1 The dual-voltage on-board power supply is shown as an example in , which is shown as a 48V / 12V dual-voltage on-board power supply. The dual-voltage on-board electrical system is particularly suitable for motor vehicles. For the two voltage ranges 2 , 3 (48V and 12V) a battery 5 , 6 is provided here, respectively, and a DC / DC converter 4 is provided for coupling these voltage levels. The starter 7 is arranged in the 12V sub-vehicle electrical network 3 . A starter / generator 8 can also be present in the 48V sub-vehicle electrical system 2 ; or alternatively only one generator is provided there.

[0034] In this case, consumer 9 is arranged in 12V sub-vehicle electrical system 3 . In...

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Abstract

The invention relates to an energy accumulator device for connecting a first voltage network (21) having a first voltage level to at least a second voltage network (22) having a second voltage level,wherein the first voltage level is higher than the second voltage level, wherein a plurality of module strings is present, in each of which a number of battery cell modules (Cx) is provided and said battery cell modules are interconnected, wherein the module strings (30, 31, 32, 34, 40, 41, 42, 43) are connected in parallel with each other, wherein a plurality of battery cell modules (Cx) connected to each other alternately in parallel or in series by means of a switching elements is present in each module string.

Description

technical field [0001] The invention relates to an energy storage device, in particular for a motor vehicle with multiple voltage levels. The invention also relates to a motor vehicle related thereto. Background technique [0002] Motor vehicles are increasingly electrified in order to be driven, for example, by electricity. In this case, too, more and more units are provided in motor vehicles, which are operated neither with the conventional on-board power supply voltage of 12V or 24V nor with high voltage, but with a DC power supply of less than 60V operate at another voltage level. [0003] In Europe, the transmission of electrical energy in trucks from higher voltages than the 12V or 24V on-board voltage normally used in motor vehicles requires a corresponding voltage regulation. For this purpose, direct voltage converters, so-called DC / DC converters, are used in the prior art. The power design of the DC / DC converter is not aimed at the power and energy required in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R16/033H01M10/44
CPCB60R16/033H01M10/441H02J7/1423H02J7/0024H02J1/082H01M10/482H02J2310/46Y02E60/10H02M3/155
Inventor 安德烈·克尔纳
Owner HELLA KG HUECK & CO
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