DE202017107886U1 - Multi-layer arrangement of battery modules in a housing - Google Patents

Abstract

Battery system (10) with an arrangement of a plurality of battery modules (ML1n, ML2n) in two layers (L1, L2) in a surrounding housing (200) according to claim 8, wherein at least two battery modules (ML1n, ML2n) according to claim 12 at one the inside of the surrounding housing (200) at least partially formed Auflager- and fastening element (201) on the support and fastening element (201) formed opposite bearing surfaces of the support element (201) rest and are fixed.

Description

The invention relates to the arrangement of a plurality of battery modules in two layers in a housing and the configuration of the battery modules and the housing designed as a housing.

Technological background

The publication US 2011/0302773 A1 describes a system for assembling storage means in the form of electrical power modules, each having two pairs of plus and minus terminals, each plus and minus pair being distributed over at least one of the outer surfaces of each module to form a terminal block of the module, and at least one connection block can be plugged onto a part of each of the terminal strips of two separate modules. At least two pairs of anchoring points form a mounting block, either by stacking the bearing modules or by assembling them.

The publication US 2012/0301749 discloses a cell combination in which individual cells from secondary cells can be compactly interconnected so that the individual cells can be securely fixed to avoid misalignment with one another. A battery system is disclosed in which cell mounting modules can be compactly assembled using the cell combination. Cell assemblies are formed in which a connection between a cover member and an outer case projects outwardly from the outer peripheral edge of an outer case. There are also connecting elements arranged to connect the plurality of secondary cells together into a single unit. A battery system is provided by vertically connecting a plurality of modularized cell assembly modules.

The battery system described below was developed under the task to create an even more compact, material-saving and easy to install battery system.

Summary of the invention

A battery system according to claim 1 is characterized by an arrangement according to claim 2 of a plurality of battery modules in two layers in a surrounding housing according to claim 8, wherein at least two battery modules according to claim 12 on a on the inside of the surrounding housing at least partially formed support and fastening element rest on and are secured to the bearing surfaces and fastener formed opposite bearing surfaces of the support element.

It is preferred that Auflager- and fastener is at least partially formed in a central mounting plane within the surrounding housing, so that the at least two battery modules are arranged and secured substantially axially symmetrical to the mounting plane to the formed by the support and fastener opposite bearing surfaces of the support element, wherein in the assembled state, a lower side of the at least one battery module of the first layer and an upper side of the at least one battery module of the second layer rest and are fastened on the opposite bearing surfaces of the support element.

In addition, it is preferably provided that the support and fastening element between the arranged in the assembled state in the surrounding housing at least two battery modules is arranged, wherein the support and fastener is designed as at least partially formed web with a small thickness, so that in the assembled state, the underside of the at least one battery module of the first Position and the top of the at least one battery module of the second layer are arranged with a thickness of the web corresponding advantageously small distance in the surrounding housing.

The arrangement is further characterized in that an assembly of the at least two battery modules exclusively executable by opposite open sides of the surrounding housing. Advantageously, the assembly of the battery modules can thus take place simultaneously in several layers and does not have to be carried out successively position by layer.

In addition, it is preferably provided that facing the support and fastener end faces of guide sleeves of the at least two battery modules in the assembly situation with their attachment plane facing end faces come into contact with thickenings, which are arranged on the support and fastening element, which is orthogonal to the inner surface of the Enclosed housing extends and is formed as at least partially formed web, which has at least on one of the opposite bearing surfaces of the web per battery module on each side of the surrounding housing, the at least one thickening extending from the bearing surfaces along the inner surface of the outer housing.

Finally, at least two fastening elements are arranged in the assembly state per battery module in a preferred embodiment, which have an external thread, which are passed through in each case an associated guide element of the battery module and einendseitig in the them each associated thickening of the support and fastener engage, wherein the thickening has a corresponding to the external thread internal thread.

Preferably, the surrounding housing on its inside an at least partially formed circumferential bearing and fastening element which extends orthogonal to the inner surface of the housing and is designed as at least partially formed web, at least on one of the opposite bearing surfaces of the web per battery module on each one Side of the surrounding housing has at least one thickening, which extend from the bearing surfaces along the inner surface of the outer housing.

It is provided that the thickenings of the housing have an internal thread.

In addition, it is preferably provided that the inner surfaces of the Umgehäuses seen from the support and fastener up and down in the z-direction is straight or oblique, with a distance between an inner surface of the surrounding housing and arranged in the assembled state battery module housing of the at least one Battery module is given starting from the mounting plane up and down to the end faces of the surrounding housing in response to a predetermined angle.

In a particularly advantageous embodiment, the surrounding housing is a casting, wherein the housing, the support and fastening element and the associated thickening are made in one piece, wherein the inner surfaces of the surrounding housing, viewed from the support and fastener up and down in the z-direction formed obliquely is, so that the distance between the inner surface of the surrounding housing and arranged in the assembled state at least one battery module housing of the at least one battery module, starting from the mounting plane up and down to the end sides of the surrounding housing depending on the predetermined angle to the end faces of Umgehäuses increases.

The battery module in turn comprises a battery module housing, which has on the opposite end sides of the battery module housing at least one guide element that has a return relative to an upper side of the battery module housing.

Finally, it is additionally mentioned that the guide elements of the battery modules are designed as guide sleeves and serve for the leading reception of a fastening element.

Brief description of the figures

The invention will be explained in more detail with reference to an embodiment and associated drawings. The figures show:

1 a perspective view of a battery system of an exploded view before an assembly state of the battery system;

2 a section AA according to 1 through the battery system (with the battery modules) in the assembled state;

3 a reduced section AA according to 1 through the surrounding housing of the battery system (without the battery modules);

4A a perspective view obliquely from the top right into the surrounding housing;

4B a perspective view obliquely from top left into the surrounding housing;

5 a perspective view straight from above into the surrounding housing.

Detailed description of the invention

For the purposes of the description of the embodiment is intended a horizontal direction of a Umgehäuses 200 of battery modules ML11 to ML24 are denoted by "x". By "y", the direction in the horizontal direction is orthogonal to the x-direction, and "z" is the direction in the vertical of the surrounding case 200 orthogonal to the x-direction.

Within all figures, the same reference numerals for the same components are used below, which may not be explained again in any figure again all already presented components by reference numerals.

A common housing 200 (see. 1 ) for a plurality of battery modules ML11 to ML24 envelops the respective battery module housings 111 to 124 (see. 1 ) and forms a so-called battery module system 10 ,

The housing subsequently becomes a clear distinction to the respective battery module housings 111 to 124 the battery modules ML11 to ML24 housing 200 called.

The enclosure 200 has provisions to be able to arrange two layers L1 and L2 of battery modules ML11 to ML24 in an advantageous manner.

1 shows in a kind of perspective exploded view in one embodiment, four battery modules ML11, ML12, ML13, ML14, which are arranged in the assembled state of a first layer L1. According to the presentation of the 1 the first layer L1 lies in a first upper x1 / y1 plane. It is understood that according to the invention at least one battery module ML1n (n = 1, 2, 3...) Is arranged in the first position L1.

In the exemplary embodiment, four battery modules ML21, ML22, M23, M24 are also arranged in a second position L2. According to the presentation of the 1 the second layer L2 lies in a second lower x2 / y2 plane.

The x1 / y1 plane is parallel to the x2 / y2 plane. It goes without saying that, according to the invention, at least one battery module ML2n (n = 1, 2, 3...) Is arranged in the second position L2.

Each battery module ML1n and ML2n has a single or multi-part battery module housing 111 . 112 . 113 . 114 such as 121 . 122 . 123 . 124 on. In a multi-part battery module housing, the housing parts are suitably connected together in the assembled state.

Each of the battery module housings (cf. 1 , in particular the battery module ML14 and 2 ) has a top -OS-, two end faces -SS-, two longitudinal sides -LS- and a bottom -US-.

The battery cells (cf. 2 ) of a battery module ML1n and ML2n thus lie respectively within a housing cover arranged on the top side -OS- and housing end elements arranged on the front sides SS and housing longitudinal elements arranged on the longitudinal side -LS-, the latter on its underside -US- are folded inwards.

The individual battery cells of the battery modules ML1n and ML2n are arranged in the assembly state on the right-angled right-angled folds formed thereby. On the respective underside US of the battery module housing 111 . 112 . 113 . 114 such as 121 . 122 . 123 . 124 were dispensed with an arrangement of a lower housing cover.

The cells are thus in the assembled state of the respective battery module ML1n and ML2n in the battery module housing 111 . 112 . 113 . 114 such as 121 . 122 . 123 . 124 fixed and compact and can each be a compact unit in the surrounding housing 200 to be ordered.

Of particular importance are guide elements F, which are formed as an integral part of the housing end elements on the end faces -SS- each battery module ML1n and ML2n.

The guide elements F are preferably formed as guide sleeves F. The guide sleeves serve to receive fastening elements B by means of which the battery modules ML1n and ML2n in the surrounding housing 200 be fastened, as will be explained in more detail.

In the 1 For clarity, only some of the guide sleeves F and some fasteners B are provided with the associated reference numerals.

According to the invention, the surrounding housing 200 for arranging and fixing the battery modules ML1n and ML2n in a so-called mounting plane xB / yB arrangements for arrangement and mounting of the first layer L1 of the first battery module ML1w and the second layer L2 of the second battery module ML2n on.

The provisions are made according to the invention as follows.

In a synopsis of 2 and 3 . 4A . 4B and 5 gets onto the surrounding housing 200 and made the arrangements.

In the mounting plane xB / yB of the enclosure 200 is an at least partially trained support and fastener 201 arranged as edge or bridge. The edge or the bridge is essentially encircling on the inside of the surrounding housing 200 formed and in other words partially exemptions, so that of a substantially encircling - partial exemptions having - partial support and fastener 201 is spoken.

The edge or ridge is considered orthogonal to the inner surface of the surrounding housing 200 at least partially trained web view, which forms an upper and lower contact surface.

It is envisaged that the support and fastener 201 only a small thickness Δz201 (cf. 3 ) having.

The support and fastener 201 is subsequently only as webs 201-LS . 201 SS designated.

The jetty 201 lies with respect to the z-direction of the housing 200 lying central height, on a central axis (in vertical direction z seen) of the Umgehäuses 200 and forms the attachment plane xB / yB.

The on the long sides -LS- of the enclosure 200 lying bridges 201-LS are identical in the embodiment.

The on the front sides -SS- of the enclosure 200 lying bridges 201 SS are not identical in the embodiment.

This non-identical formation of the webs 201 SS arises from further considerations, which are not essential to the invention.

The on the front sides -SS- of the enclosure 200 lying bridges 201 SS are used as supports for the side battery modules ML1n and ML2n, while those on the long sides -LS- of the surrounding housing 200 lying bridges 201-LS also be used as a support.

However, comes on the long sides -LS- of the housing 200 lying bridges 201-LS Yet another function, which consists in that all battery modules ML1n and ML2n at the on the longitudinal sides -LS- of the surrounding housing 200 lying bridges 201-LS be attached.

It is understood that this mounting option described below on the end faces -SS- of the surrounding housing 200 lying bridges 201 SS is feasible.

As in the 2 and 3 . 4A . 4B and 5 can be seen, have the long sides -LS- of the housing 200 lying bridges 201-LS Thickenings D on, wherein each two opposite fastening elements B is associated with a thickening D.

In other words, two each of the battery modules ML1n and ML2n lying opposite each other in the positions L1, L2 are assigned four thickenings D, those on the longitudinal sides -LS- of the surrounding housing 200 arranged webs 201-LS are formed. On each longitudinal side -LS of the enclosure 200 thus eight thickers D are arranged.

The local arrangement of the thickening D corresponds to the desired state in assembly of the guide sleeves F of the battery modules ML1n and ML2n.

The thickenings D are on the underside of the webs 201-LS arranged. This embodiment follows from the idea that the arranged on the end faces SS housing end elements of the battery modules ML1n and ML2n are identical, which is why the guide sleeves F of the battery modules ML21, ML 22, ML23, ML24 in the assembled state in the lower second layer L2 relative to the Bottom of the webs 201-LS by the amount ΔzF (cf. 1 ) stand behind.

In these recesses formed in the assembly state of the guide sleeves F of the battery modules ML21, ML 22, ML23, ML24 are in the assembled state, the thickening D a.

The thickenings D have corresponding passage openings, in which an internal thread is arranged.

The fastening elements B have corresponding external threads.

The fastening elements B are preferably provided as threaded screws with a screw head, the length of which is dimensioned such that the end of the thread terminates substantially in the middle of the thickenings D - while a fixed position of the battery modules ML21, ML 22, ML23, ML24 is achieved ,

In particular in 2 It is shown that the end of the thread of an inserted from above fastener B is bolted to a further end of a bottom introduced fastener B in a thickening D.

The enclosure 200 is preferably a casting, which is cast in a tool from upper part and lower part (not shown). In the manufacturing process, the correspondingly arranged in the tool as a negative mold at least partially formed edge 201 as well as the thickenings D formed. The thickenings D preferably have a length corresponding to the dimension .DELTA.zD (see. 3 ).

Thus, the come to the edge or bridge 201 pointing end faces of the guide sleeves F in the assembly situation with their facing end faces of the thickening D in contact, whereby a compact and stabilizing attachment of the battery modules ML1n, ML2n is achieved in the surrounding housing.

In order for a demolding can take place, the inner surfaces of the outer housing 200 starting from the edge or web 201 formed obliquely upwards and downwards in the z-direction. In other words, the enclosure 200 expands starting from the mounting plane xB / yB up and down in the z-direction seen by the predetermined angle α, whereby a better demoldability of the Umgehäuses is achieved from the tool.

But this solution has a further advantage, which is that when mounting the between the inside of the outer housing 200 and the outer sides of the battery modules ML1n, ML2n an enlarged clearance in the region of the outer guide sleeves F of the battery modules ML1n, ML2n is formed, so that the guide sleeves F are better accessible to a worker when screwing the fasteners with a screw advantageously.

It is understood that the surrounding housing 200 not necessarily be made as a casting, so that the inner surfaces of the surrounding housing 200 (in another manufacturing process) from the edge or ridge 201 seen up and down in the z-direction can be straight or oblique.

The enclosure 200 of the battery system 10 becomes after assembly, thus the assembly of the battery modules ML1n, ML2n in the surrounding housing 200 also closed with a lower and upper enclosure lid (not shown).

The battery system module 10 thus has a common mounting plane, wherein the mounting of the battery modules ML1n, ML2n in the layers L1 and L2 takes place by arrangement and fastening from two sides, such as the insertion direction of the layered battery modules ML1n, ML2n according to the direction of arrows P (opposite mounting direction) or the screwing direction of the fastening elements B, in particular in the 1 and 2 clarified.

LIST OF REFERENCE NUMBERS

10

 Battery system (multi-layered)

200

 surrounding housing

201

 Support and fastening element; (Edge / ridge)

201-LS

 Footbridge on one long side

201 SS

 Footbridge on a front side

D

 thickened

L1

 first location

M _L 1n

Battery module in the first position L1

ML11, ML12, ML13, ML14

 battery module

ML14

 fourth battery module in the first position L1

111, 112, 113, 114

 Battery module housing

L2

 first location

M _L 2n

Battery module in the first position L1

ML21, ML22, ML23, M24

 battery module

211, 212, 213, 214

 Battery module housing

OS

 top

US

 bottom

LS

 long side

SS

 front

F

 guide element

B

 fastener

x

horizontal direction

y

horizontal direction transverse to the x-direction

z

vertical direction transverse to the x-direction or y-direction

ΔzF

 Return of the guide element F

Δz201

Thickness of support and fastener 201

ΔzD

 Length of thickening D

x1 / y1

 first floor

x2 / y2

 first floor

xB / yB

 mounting level

α

angle

P

 mounting direction

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• US 2011/0302773 A1 [0002]
• US 2012/0301749 [0003]

Claims (13)

Battery system ( 10 ) with an arrangement of several battery modules (M _L 1n, ML2n) in two layers (L1, L2) in a surrounding housing ( 200 ) according to claim 8, wherein at least two battery modules (ML1n, ML2n) according to claim 12 at one on the inside of the surrounding housing ( 200 ) at least partially formed support and fastening element ( 201 ) by the support and fastening element ( 201 ) formed opposite bearing surfaces of the support element ( 201 ) and are attached. Arrangement of several battery modules (ML1n, ML2n) in two layers (L1, L2) in a surrounding housing ( 200 ), characterized in that at least two battery modules (ML1n, ML2n) at one on the inside of the surrounding housing ( 200 ) at least partially formed support and fastening element ( 201 ) by the support and fastener ( 201 ) formed opposite bearing surfaces of the support element ( 201 ) and are attached. Arrangement according to claim 2, characterized in that the support and fastening element ( 201 ) at least partially in a central fastening plane (xB, yB) within the surrounding housing ( 200 ) is formed, so that the at least two battery modules (ML1n, ML2n) substantially axially symmetrical to the mounting plane (xB, yB) to which by the support and fastening element ( 201 ) formed opposite bearing surfaces of the support element ( 201 In the assembled state, a bottom side (-US-) of the at least one battery module (ML1n, ML2n) of the first layer (L1) and a top side (-OS-) of the at least one battery module (ML1n, ML2n) of the second Position (L2) on the opposite bearing surfaces of the support element ( 201 ) and are attached. Arrangement according to claim 3, characterized in that the support and fastening element ( 201 ) between the assembled state in the housing ( 200 ) arranged at least two battery modules (ML1n, ML2n) is arranged, wherein the support and fastening element ( 201 is formed as at least partially formed web of small thickness (.DELTA.z201), so that in the assembled state, the bottom (-US-) of the at least one battery module (ML1n, ML2n) of the first layer (L1) and the top (-OS-) of at least a battery module (ML1n, ML2n) of the second layer (L2) with a small distance in the surrounding housing corresponding to the thickness (Δz201) of the web ( 200 ) are arranged. Arrangement according to claim 2, characterized in that an assembly of the at least two battery modules (ML1n, ML2n) exclusively from opposite open sides of the surrounding housing ( 200 ) is executable. Arrangement according to claim 2, characterized in that the support and fastening element ( 201 ) facing end faces of guide sleeves (F) of the at least two battery modules (ML1n, ML2n) in the assembly situation with their fastening plane (xB, yB) facing end faces with thickenings (D) come into contact, on the support and fastening element ( 201 ) are arranged, which is orthogonal to the inner surface of the outer housing ( 200 ) and is formed as at least partially formed web, the at least on one of the opposite bearing surfaces of the web per battery module (ML1n, ML2n) on one side (LS) of the surrounding housing ( 200 ) which has at least one thickening (D) extending from the bearing surfaces along the inner surface of the housing ( 200 ). Arrangement according to claim 6, characterized in that in the assembled state per battery module (ML1n, ML2n) at least two fastening elements (B) are arranged, which have an external thread, which are passed through in each case an associated guide element (F) of the battery module (ML1n, ML2n) and einendseitig in their respective associated thickening (D) of the support and fastener ( 201 ), wherein the thickening (D) has a corresponding to the external thread internal thread. Enclosure ( 200 ) comprising a on the inside of the surrounding housing ( 200 ) at least partially trained circumferential bearing and fastening element ( 201 ), which is orthogonal to the inner surface of the outer housing ( 200 ) and is formed as at least partially formed web, the at least on one of the opposite bearing surfaces of the web per battery module (ML1n, ML2n) on one side (LS) of the surrounding housing ( 200 ) has at least one thickening (D) extending from the bearing surfaces along the inner surface of the housing ( 200 ). Enclosure according to claim 8, characterized in that the thickenings (D) have an internal thread. Enclosure ( 200 ) according to claim 8, characterized in that the inner surfaces of the outer housing ( 200 ) starting from the support and fastening element ( 201 ) is up or down in the z-direction seen straight or obliquely, wherein a distance between an inner surface of the surrounding housing ( 200 ) and the im Assembled state arranged battery module housing ( 111 . 112 . 113 . 114 ; 121 . 122 . 123 . 124 ) of the at least one battery module (ML1n, ML2n) starting from the mounting plane (xB / yB) up and down to the end faces of the surrounding housing ( 200 ) as a function of a predeterminable angle (α;> / = 0 ° is given. Enclosure ( 200 ) according to claim 10, characterized in that the surrounding housing ( 200 ) is a casting, wherein the housing, the support and fastener ( 201 ) and the associated thickening (D) are made in one piece, wherein the inner surfaces of the outer housing ( 200 ) starting from the support and fastening element ( 201 ) are formed obliquely upwards and downwards in the z-direction, so that the distance between the inner surface of the surrounding housing ( 200 ) and the at least one battery module housing (in the assembled state) ( 111 . 112 . 113 . 114 ; 121 . 122 . 123 . 124 ) of the at least one battery module (ML1n, ML2n) starting from the mounting plane (xB / yB) up and down to the end faces of the surrounding housing ( 200 ) depending on the predetermined angle (α;> 0 °) to the front sides of the outer housing ( 200 ) increases. Battery module (ML1n, ML2n) comprising a battery module housing ( 111 . 112 . 113 . 114 ; 121 . 122 . 123 . 124 ), characterized in that on the opposite end faces (SS) of the battery module housing ( 111 . 112 . 113 . 114 ; 121 . 122 . 123 . 124 ) at least one guide element (F) is arranged such that opposite a top side (-OS-) of the battery module housing ( 111 . 112 . 113 . 114 ; 121 . 122 . 123 . 124 ) has a return, the return having an amount (ΔzF). Battery module (ML1n, ML2n) according to claim 12, characterized in that the guide element (F) is designed as a guide sleeve for the leading receiving a fastener (B).

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