Energy accumulator module

Abstract

An energy storage module having a plurality of stacked flat cells. The energy storage module has an interconnection formed in such a way that the energy storage module can be connected mechanically, electrically and / or for exchanging coolant with at least one other energy storage module of the same kind.

Description

BACKGROUND OF THE INVENTION[0001]The present invention relates to an energy storage module having a plurality of stacked flat cells.[0002]Energy storage modules of this kind are used in a plurality of devices, especially in motor vehicles. They can be combined in order to create an energy storage unit consisting of several modules and having the performance features required in each individual case.[0003]The problem therewith is often that the interconnection of the individual modules, i.e. their appropriate connection to one another, is realized in a relatively extensive manner and that normally additional connection components are required. This also makes assembly of the corresponding energy storage unit more difficult.[0004]It is therefore an object of the present invention to provide an energy storage module which is compact and can be mounted in a simple manner. Furthermore, the energy storage module is to be reliable and efficient.SUMMARY OF THE INVENTION[0005]This object is ...

AI Technical Summary

Benefits of technology

[0007]Advantageously, the energy storage module has cooling elements for cooling the flat cells, wherein the cooling elements are arranged between the flat cells and are in particular plate-shaped. Efficient cooling of the flat cells is possible by means of the cooling elements which are arranged between the flat cells so that, even during an operation of the energy storage module which always involves heat losses, a temperature range can be maintained which enables efficient use of the energy storage module.

[0012]Mechanical pressure is applied to the flat cells by co-operation of the pressure plates and the resilient element. This pressure increases the stability of the stack and has a positive effect on the service life and the performance of the individual flat cells as long as the pressure does not exceed certain limits. Moreover, the mechanical pressure improves thermal coupling between the flat cells and the so-called cooling elements, whereby the heat losses of the flat cells can be dissipated more efficiently.

[0016]In case at least some of the interconnection means are plug-in connectors, which are in particular detachable, assembly or connection of two energy storage modules can be realized by simple insertion, which accelerates assembly and reduces assembly costs. By providing a detachable connection, a defective module forming a constituent part of a larger energy storage unit can, for example, be replaced in a simple manner.

[0017]Provision can be made for the energy storage module having a connection unit which interconnects the flat cells at least electrically and is formed in particular as a plate extending in a plane perpendicular to the respective extension plane of the flat cells. Thus, the connection unit forms a contacting element for electrically interconnecting the flat cells serially or in parallel. The flat cells can also be connected to one another through a mixed form of parallel and serial interconnection. The connection unit can additionally provide mechanical stabilization.

Problems solved by technology

The problem therewith is often that the interconnection of the individual modules, i.e. their appropriate connection to one another, is realized in a relatively extensive manner and that normally additional connection components are required.

This also makes assembly of the corresponding energy storage unit more difficult.

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