Modular system for accommodating at least one electrochemical energy storage device

Abstract

Modular system (100) for accommodating at least one electrochemical energy storage device, comprising a plurality of construction variant-specific connecting elements (101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113) which can be connected to at least one base plate (114, 115), wherein the connecting elements (101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113) can be connected to one another to form a frame enclosing the base plate (114, 115), characterized in that the connecting elements (101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113) are designed as struts (102, 104, 106, 108, 110, 112, 113) and / or angles (101, 103, 105, 107, 109, 111, 200).

Description

The invention is based on a modular system for accommodating at least one electrochemical energy store, a method for producing a base assembly for accommodating at least one electrochemical energy store, a battery with the base assembly and a use of the battery in a vehicle and / or stationary battery system according to the preamble of the independent claims.Prior ArtFrames for receiving at least one electrochemical energy store are known from the prior art.The document DE 10 2013 218 038 A1 discloses a battery box for a battery. The battery box is here made three-dimensionally from a plurality of struts and angles. The struts and angles are inserted into one another. The said struts, in particular longitudinal struts, transverse struts and vertical struts, surround the battery modules arranged in the interior.The publication DE 10 2010 046 529 A1 discloses a frame system for a battery module. The frame system comprises two opposing pressure plates and two opposing side parts. The pressure plates and the side parts are inserted into one another and thereby form a box-shaped frame for receiving battery cells.The publication DE 10 2013 102 793 A1 discloses a battery pack which can be fastened to a vehicle by means of a frame. This frame has an annular support frame which comprises a plurality of differently configured side element regions. Furthermore, the supporting frame has a front element region and a rear element region, wherein the front element region also has corner regions.The document DE 10 2013 223 636 A1 discloses a three-dimensional cage for a vehicle battery. The cage comprises an upper assembly and a lower assembly, wherein the battery packs are enclosed between the upper assembly and the lower assembly. The upper assembly comprises a plurality of U-shaped frames interconnected by cylindrical tubes. Likewise, the lower assembly comprises frame elements which are connected to one another by means of tubular segments.The prior art for this purpose is also the publications DE 199 30 399 A1, DE 41 16 253 C1 and DE 10 2011 101 022 A1.Disclosure of the InventionAdvantages of the InventionThe procedure according to the invention with the characterizing features of the independent claims has the advantage over the contrary that the modular system comprises a plurality of variant-specific connecting elements connectable to at least one base plate, wherein the connecting elements can be connected to one another to form a frame enclosing the base plate.This connection can be implemented in a force-fit, material-fit and / or form-fit manner, whereby flexible adaptations to requirements specific to design variants can be implemented, for example a maximum permissible total weight, stability requirements or material requirements.Further advantageous embodiments are the subject matter of the dependent claims.The connecting elements can be connected to one another in a releasable and / or non-releasable manner. If at least a plurality of the connecting elements can be detachably connected to one another, these can be replaced, for example, if individual connecting elements are damaged.If the connecting elements are at least partially non-detachably connectable, manipulation of the enclosing frame is reliably prevented. Furthermore, a mechanical stability of the frame can be further increased by the non-detachable connection.The base plate that can be connected to the connecting elements comprises a cooling plate for tempering the at least one electrochemical energy store and / or a base plate for mechanically stabilizing the frame.The cooling plate makes it possible to dispense with further measures for cooling the at least one electrochemical energy store. Furthermore, the cooling plate can accommodate the at least one electrochemical energy store.The cooling plate may include grooves in one embodiment. The grooves achieve a particular rigidity of the cooling plate. Furthermore, an increase in surface area is achieved by means of the grooves, as a result of which heat which is generated by operating the electrochemical energy store can advantageously be dissipated particularly effectively from the at least one electrochemical energy store. As a result, a thermal load on the at least one electrochemical energy store is reduced, as a result of which a longer useful life is achieved.In addition to a mechanical stabilization of the frame, the base plate increases a crash resistance of a floor assembly. The frame enclosing the base plate eliminates costly assembly steps for screwing the frame to the base plate.In an advantageous embodiment, the base plate can have grooves and / or stiffening elements.The grooves achieve a particular rigidity of the base plate and the heat can be dissipated particularly effectively from the at least one electrochemical energy store via the cooling and base plate.The stiffening elements achieve a particular rigidity against rotation of the base plate. This increases crash safety.The connecting elements for connecting to the base plate have at least partially a recess and / or cross struts. Advantageously, the base plate can be inserted into the recess of the connecting element in a force-fitting, form-fitting and / or materially integral manner. This eliminates costly assembly steps, such as, for example, screwing the connecting elements to the base plate.The cross braces advantageously increase the mechanical stability of the frame, in particular create a support surface for the base plate. As a result, a compressive load on the cross struts is reduced and an external force effect is distributed to a plurality of connecting elements, for example in the event of an accident.Advantageously, the connecting elements are made of aluminum, a plastic and / or a fiber-reinforced plastic. This advantageously allows construction variant-specific requirements, such as a maximum permissible total weight, to be implemented.Furthermore, requirements for electromagnetic compatibility of the floor assembly can be fulfilled.The connecting elements each comprise at least one through hole for the force- and / or form-fit connection of the connecting elements. For example, by screwing securing screws into the through holes of the connecting elements, these can be securely fixed.This advantageously allows flexible adaptation to variant-specific requirements to be implemented, for example a special resistance to vibrations.According to the invention, the connecting elements are designed as braces and / or angles, for example rectangular angles and / or T-shaped angles.As a result, different embodiments of the floor assembly can be advantageously implemented, for example polygonal variants, in particular a square floor assembly, and / or a T-shaped floor assemblies.In alternative embodiments, the connecting elements are designed as curved elements.This advantageously allows different embodiments of the floor assembly to be implemented, for example a round shape of a floor assembly.The struts and / or angles have a polygonal and / or round cross section.The method for producing a base assembly for receiving at least one electrochemical energy store with the modular system according to the invention comprises the following steps:selecting a plurality of connection elements;providing a first frame element by force-fit, material-fit and / or form-fit connection of at least a part of the selected connecting elements;inserting a base plate into the first frame element;providing a second frame element by force-fit, material-fit and / or form-fit connection of at least a part of remaining selected connecting elements;connecting the base plate to at least one of the frame elements;connecting the second frame element to the first frame element to form a frame, as a result of which the base plate is connected to the frame elements in a force-fit, materially bonded and / or positive-fit manner to form a floor assembly.Advantageously, the floor assembly can thereby be manufactured with a high degree of automation and a very short assembly time.The method for producing a base assembly for receiving at least one electrochemical energy store comprises a further step:sealing an edge formed by abutting the frame and the base plate.This advantageously achieves a physical and / or electromagnetic tightness. The sealing can be effected by an adhesive, a gap seal and / or a rubber seal.The method for producing a base assembly for receiving at least one electrochemical energy store further comprises the following step:at least partial screwing, welding and / or adhesive bonding of the connecting elements and / or of the base plate to the connecting elements.This advantageously allows implementation of requirements specific to design variants, such as stability requirements and / or resistance to vibrations.The base assembly for a battery, which has at least one electrochemical energy store which is surrounded by the base assembly and a cover, is advantageously produced in accordance with a modular systemAs a result, the battery can be produced with a comparatively low outlay on assembly.The battery is advantageously used in a vehicle and / or stationary battery system having a lithium-ion, lithium-sulfur, lithium-air and / or solid electrolyte energy store.As a result, requirements for a maximum available installation space are implemented with little outlay. For example, an outer shape of the battery can be adapted to the available installation space.Brief Description of the FiguresExemplary embodiments of the invention are illustrated in the drawings and explained in more detail in the following description.It shows: FIG. 1 shows an exemplary illustration of a method for producing an embodiment of a square floor assembly by means of the modular system according to the invention; and FIG. 2 shows an embodiment of an angular connecting element of the modular system according to the invention; and FIG. 3 shows a section through an angular connecting element.Detailed Description of the Embodiments.Like reference numerals designate like device components throughout the figures.FIG. 1 shows an example illustration of a method for manufacturing an embodiment of a quadrilateral floor assembly. The modular system 100 according to the invention comprises a plurality of connecting elements 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113. These connecting elements comprise angles 101, 105, 109, 111 and T-shaped angles 103, 107 and struts 102, 104, 106, 108, 110, 112, 113.The modular system 100 further comprises a first base plate 114 and a second base plate 115.The angles 101, 105, 109, 111 comprise cross struts 101 a, 105 a, 109 a, 111 a, and the T-shaped angles 103, 107 comprise cross struts 103 a, 103 b, 107 a, 107 b. These cross braces serve as a support surface for the first base plate 114 or the second base plate 115. As a result, a compressive load on the cross struts is reduced and an external force effect is distributed to a plurality of connecting elements, for example in the event of an accident.In the method shown in FIG. 1, in a first method step, a plurality of connecting elements 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113 is first selected.In a second method step, a first frame element is provided by force-fit, material-fit and / or form-fit connection of the connecting elements 101, 102, 104, 105, 106.In a third method step, the base plate 115 is inserted into the first frame element, in particular with an exact fit.In a fourth method step, a second frame element is provided and connected by force-fitting, material-fitting and / or form-fitting connection of the connecting elements 103, 107, 108, 110, 113.In a fifth step, the base plate 114 is inserted into the second frame element.In a sixth method step, the connecting elements 109, 111, 112 are connected to form a third frame element. This third frame element is connected to the second frame element and to the base plate 114 in a force-fit, form-fit and / or firmly bonded manner to form a fourth frame element.In a seventh method step, the first frame element and the fourth frame element are connected to one another in a force-fit, materially bonded and / or form-fit manner, as a result of which a square floor assembly enclosing the two base plates 114, 115 is produced.FIG. 2 shows an embodiment of an angular connecting element. The angular connector 200 has a rectangular cross section 201 for connection to other connectors. Furthermore, the angular connecting element 200 has a cutout 202, for example for receiving a base plate. The angular connecting element 200 further comprises a cross strut 203, which serves to form a bearing surface of the base plate.FIG. 3 shows a section through an angular connecting element. The section through the plane A-A of the angular connecting element 200 shown in FIG. 3 shows a base plate 314 which is inserted into the recess 202 and comprises a cooling plate 316 and a base plate 317. Furthermore, in the embodiment shown in FIG. 3, a plug connection 319 is shown, for example a snap connection, for plugging the angular connecting element 200 with a further connecting element of the modular system.

Claims

Modular system (100) for accommodating at least one electrochemical energy store, comprising a plurality of construction-variant-specific connecting elements (101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113) which can be connected to at least one base plate (114, 115), wherein the connecting elements (101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113) can be connected to one another to form a frame enclosing the base plate (114, 115), characterized in that the connecting elements (101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113) are designed as struts (102, 104, 106, 108, 110, 112, 113) and / or angles (101, 103, 105, 107, 109, 111, 200).Modular system (100) for accommodating at least one electrochemical energy store according to Claim 1, wherein the connecting elements can be connected to one another in a releasable and / or non-releasable manner.Modular system (100) for accommodating at least one electrochemical energy store according to either of Claims 1 and 2, wherein the base plate (114, 115) which can be connected to the connecting elements (101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113) comprises a cooling plate for tempering the at least one electrochemical energy store and / or a base plate for mechanically stabilizing the frame.Modular system for accommodating at least one electrochemical energy store according to one of the preceding claims, wherein the connecting elements (101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113) for connecting to the base plate (114, 115) have at least partially a cutout (202) and / or cross struts (101a, 103a, 105a, 107a, 103b, 107b, 109a, 111a, 203).Modular system for accommodating at least one electrochemical energy store according to one of the preceding claims, wherein the connecting elements (101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113) are designed from aluminium, a plastic and / or a fibre-reinforced plastic.Modular system for accommodating at least one electrochemical energy store according to one of the preceding claims, wherein the connecting elements (101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113) each comprise at least one through hole for the frictional and / or positive connection of the connecting elements (101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113).Method for producing a floor assembly for receiving at least one electrochemical energy store having a modular system according to one of Claims 1 to 6, comprising the following steps: - selecting a plurality of connecting elements (101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113), wherein the connecting elements (101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113) are designed as struts (102, 104, 106, 108, 110, 112, 113) and / or angles (101, 103, 105, 107, 109, 111, 200); - providing a first frame element by connecting at least a part (101, 102, 104, 105, 106; 108, 109, 110, 111, 112) of the selected connecting elements (101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113) in a force-fitting, substance-fitting and / or form-fitting manner; inserting a base plate (114, 115) into the first frame element; providing a second frame element by force-fitting, material-fitting and / or form-fitting connection of at least a part (103, 107, 113) of remaining selected connecting elements (101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113); connecting the base plate (114, 115) to at least one of the frame elements; connecting the second frame element to the first frame element to form a frame, whereby the base plate (114, 115) is connected force-fitting, material-fitting and / or form-fitting to the frame elements to form a floor assembly.Method for producing a base assembly for accommodating at least one electrochemical energy store according to Claim 7, comprising a further step: - sealing an edge formed by the frame and the base plate (114, 115) abutting against one another.Method for producing a base assembly for receiving at least one electrochemical energy store having a modular structure according to either of Claims 7 and 8, further comprising the following step: - at least partial screwing, welding and / or adhesive bonding of the connecting elements and / or of the base plate (114, 115) to the connecting elements (101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113).Battery comprising at least one electrochemical energy store which is comprised by a base assembly and a cover, characterized in that the base assembly is produced with a modular system according to at least one of Claims 1 to 6.Use of a battery according to Claim 10 in a vehicle and / or stationary battery system having a lithium-ion, lithium-sulfur, lithium-air and / or solid electrolyte energy store.

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