CN112585809B - Battery housing for a motor-driven vehicle - Google Patents
Battery housing for a motor-driven vehicle Download PDFInfo
- Publication number
- CN112585809B CN112585809B CN201980054827.1A CN201980054827A CN112585809B CN 112585809 B CN112585809 B CN 112585809B CN 201980054827 A CN201980054827 A CN 201980054827A CN 112585809 B CN112585809 B CN 112585809B
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- China
- Prior art keywords
- side walls
- basin
- battery housing
- elements
- battery
- Prior art date
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Links
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 36
- 230000002787 reinforcement Effects 0.000 claims description 22
- 238000005304 joining Methods 0.000 claims description 7
- 230000007704 transition Effects 0.000 claims description 5
- 238000007789 sealing Methods 0.000 description 9
- 238000009434 installation Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
- H01M50/291—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The invention relates to a battery housing for a motor-driven vehicle, comprising a basin and a frame structure surrounding the basin on the outside, the basin having a floor and side walls formed on the floor, wherein the edge regions of the basin, which are formed by adjacent side walls, are rounded, wherein reinforcing elements are arranged on the inside of at least one side wall, which form cavity profiles or are designed as cavity profiles and extend between the rounded edge regions, which delimit the side walls with respect to the adjacent side walls, and follow the longitudinal extension of the side walls, and which are connected to the side walls and the floor and to the basin in the region of the end sections of the reinforcing elements, such that the frame structure for reinforcing the side walls is formed by frame profile elements located on the outside, the side walls, the floor sections of the basin adjoining the side walls and reinforcing elements connected to the basin, which are mounted in the basin.
Description
Technical Field
The invention relates to a battery housing for a motor-driven vehicle, comprising a basin and a frame structure surrounding the basin on the outside, the basin having a floor and side walls formed on the floor, wherein the edge regions of the basin, which are formed by adjacent side walls, are rounded.
Background
In the case of motor-driven vehicles such as passenger cars, transport vehicles, and the like, the battery module serves as a power storage. Such battery modules are typically assembled from various individual battery cells. These batteries relate to so-called high voltage batteries. Certain requirements are placed on the battery modules required to install operation of such vehicles. It is necessary to protect the battery modules in the battery case from the outside. In particular if force inputs are to be caused by a crash, these force inputs must meet safety requirements.
In order to provide mechanical protection for the battery housing, in particular for the battery module or the modules contained therein, the basin is surrounded by a frame structure arranged on the outside with respect to the side walls. Such a frame structure is made up of profile sections that are individually combined to form a frame profile. A battery housing with such a basin is known from US 2011/0143179 A1. Extruded light metal cavity profiles, typically aluminum extrusion profiles, are used as profile sections for weight saving.
The frame structure is intended to withstand a collision, such as may occur in a rear-end collision. This is at least to some extent to protect the battery cells in the tub from damage. In order to strengthen the volume of the basin, longitudinal and transverse braces are provided which are supported with their end faces on the side wall surfaces facing one another. These braces help to strengthen the basin. The impact laterally acting on the profile sections of the frame profile can be transmitted via the struts extending in the impact direction to the side facing away from the impact. This normally acts on the support.
Another battery housing for an electric vehicle is known from DE 10 2016 120 828 A1, in which a tub is surrounded by a frame structure in order to provide mechanical protection for the battery modules in the battery housing. The frame structure is arranged externally with respect to the side walls, wherein the frame structure consists of individual interconnected cavity profiles. The cavity profile is an extruded light metal cavity profile, typically an aluminum extrusion profile. In battery cases of this type, a structured or deep-drawn basin is used. The structured basin is characterized in that the profile frame is welded with the base plate in a sealing manner, which brings about the advantage of an ideal corner structure and thus an optimized utilization of the installation space. A disadvantage of this construction of the bowl is that a process-safe sealing weld is required, which usually involves a great deal of costs. In contrast, this sealing problem does not exist in deep drawn basins. However, it is necessary to consider compliance with a defined drawing radius, particularly when adjacent side walls form edges. In this solution, the basin volume is therefore not optimally used when placing the battery modules.
DE 10 2016 116 729 A1 discloses a battery housing by means of which the pot volume provided by the pot can be better utilized in deep-drawn pots. This is achieved by: for each rounded edge region of the basin body connecting the two side walls, a reverse rounded edge section is provided as a connecting wall section at the transition to at least one side wall. By this measure, the rounded edge region is displaced outwards with respect to the pot volume. Thus, such a tub provides a larger battery capacity. Due to the design of the outwardly rounded edge region, the side wall of the basin body does not rest on the outside on the frame structure supported by the straight frame profile.
The battery modules arranged in such a basin are fastened to the cavity profile of the frame structure by means of connecting flanges, i.e. by means of bolts arranged in the cavity profile. Although the battery module is fixed in the battery housing by means of screws, the battery volume provided by the battery housing in this way can be used entirely by the battery volume. But such fixation requires sealing of the fixation. In many cases this includes additional measures to provide a seal to the bolted connection being implemented. This is done at each bolting location.
From DE 10 2017 102 685 A1, a battery housing is known, which is optimized with respect to manufacturing tolerances, molding costs and usable interior. Here, the battery case has a longitudinal strut on the bottom plate of the battery case, on which the battery module can be placed, to ensure sufficient ventilation of the battery module required for thermal reasons. The frame structure surrounding the battery housing is connected to the bottom plate of the tub of the battery housing to form a chassis protection.
Furthermore, a battery housing is known from DE 10 2016 115 037 A1, the purpose of which is to increase the crash performance in a limited installation space. Here, the sides adjacent to each other are arranged either on the connection or on the oblique joint, so that although good crash performance can be ensured, sufficient tightness of the battery housing cannot be ensured.
From US 2017/01111114 A1, a battery housing is known, in which a deep-drawn tub is provided with a stiffening element on the inside of the battery tub, wherein the battery module is fastened to the stiffening element by means of a flange for preventing sliding of the battery module. However, the use of reinforcing elements may result in a loss of the best available capacity for a substantial portion of the battery capacity.
Disclosure of Invention
The object of the present invention is therefore to improve a battery housing of the above-mentioned type such that not only is the available space available for providing a battery volume better, but wherein no additional sealing measures have to be taken, whereby the battery module can be fixed by means of a connecting flange protruding from such a battery module.
The object is achieved according to the invention by a battery housing of the aforementioned type in that a reinforcing element is arranged on the inside of at least one side wall, which forms or is designed as a cavity profile and extends between rounded edge regions that delimit the side wall with respect to adjacent side walls and extends along the longitudinal extension of the side wall, and which is connected to the side wall and to the base plate and to the basin in the region of the end sections of the reinforcing element, such that the frame structure for reinforcement for the side wall is formed by an outer frame profile, the side wall, the base plate section of the basin adjoining the side wall and the reinforcing element connected to the basin and mounted in the basin.
The battery case includes a tub for accommodating the battery module and a frame structure surrounding the tub at the outside. In the battery housing, a reinforcing element is provided along at least one side wall within the tub. The reinforcing element extends along the longitudinal extension of the side wall and between two further side walls adjoining the side wall. The reinforcement element delimits the available volume of the basin in parallel to the floor toward the interior of the basin. The reinforcing element is either a cavity profile or forms a cavity profile. In the latter case, the cavity profile is formed by the reinforcing element, a part of the base plate and at least one section of the adjoining side wall of the basin. By providing such stiffening elements inside the tub, an internal support structure is formed, whereby frame profile pieces having a smaller width can be provided on the outside of the side walls, which are connected to the stiffening elements on the inside. In this connection, the frame structure for reinforcement is formed by the frame profile located on the outside, the side wall, a floor section of the basin adjoining the side wall and a reinforcing element for connection to the basin, which is arranged in the basin. Since the reinforcement element is located in the basin body, the battery module can be connected to the reinforcement element, for example by using a connecting flange, without special sealing measures being required for this purpose, even if a fastening element penetrating the wall of the frame profile, for example a cavity profile, is used for fastening. Unlike known such fastening, the penetration of the reinforcing element by the screw does not lead to a non-sealing effect, since the end face of the reinforcing element is arranged inside the basin. The connecting flanges projecting from the mutually opposite sides of the battery module are preferably arranged offset from one another. This simplifies the assembly and disassembly of a typical plurality of battery modules, since the connecting flanges are not arranged one above the other, but side by side with each other. In this embodiment, fastening openings or holes are provided in the reinforcing element at corresponding locations. Because the reinforcement element is located inside the tub, the fixation opening can be used for all possible battery module connections, so that no sealing problems are caused even if not used. This is not possible in a battery case according to the prior art. The aforementioned advantages are formed irrespective of whether the tub is a deep drawn member or an assembled member.
According to one possible embodiment, the basin is a deep-drawn component, and the edge regions formed by the adjacent side walls are correspondingly rounded. In this case, the reinforcing element is located between mutually opposite rounded edge regions, by means of which the side wall connected to the reinforcing element is connected to two adjacent side walls. In this case, between the mutually opposite rounded edge regions, a pot volume which is to be occupied by the battery volume and which cannot be used or is only insufficiently used due to the rounded edge configuration is used in a suitable manner to form the aforementioned structure.
Such a stiffening element is inserted into the basin and extends along the longitudinal extension of the side walls, which results in the outer frame profile being formed with a smaller width, so that the basin can have a greater length in this respect with the same external dimensions. In such a battery housing, the available installation volume can thus be better utilized as battery volume, which is based on the advantages of deep-drawn basins.
Preferably, in such a battery case, the frame structure is implemented on two side walls facing each other as described above. The inner side of the side walls is therefore provided with reinforcing elements as built-in structural elements.
The reduction in width of the frame-structure profile on the outside of the side wall provided with the stiffening element on the inside depends on the design of the stiffening element, in particular the width of the stiffening element protruding into the tub volume. The width of the frame-structure profile is reduced by, for example, 50% relative to the other profiles. Obviously, the possibility of reducing the width of the frame-structure profile also depends on the radius of the edge region to be rounded, when the edge region is designed to be rounded. In this respect, it is also advantageous if the rounded edge region does not have to have a very narrow radius in order to make good use of the installation space. Rather, it is preferred that it does not have a very narrow radius. Accordingly, the basin is simpler to manufacture.
The reinforcing element may be a cavity profile. However, reinforcing elements which are not cavity profiles per se are generally used, but rather form cavity profiles with adjacent side walls or with parts of the side walls which extend vertically opposite thereto and with sections of the base plate when the reinforcing elements are connected to the walls, generally by joining. Such stiffening elements generally have two edge sections arranged in a bent manner. For connecting the reinforcement element to the side wall and to the floor of the basin, the edge sections each have at their free ends a joining flange which extends in a longitudinal direction of the reinforcement element and which is bent in each case relative to the plane of the edge sections. The engagement flange is designed to extend along a plane parallel to the adjacent side wall or floor of the tub. The reinforcing element is connected to the side wall and the base plate and to the tub by means of the ends of the longitudinal sides of the reinforcing element. In order to connect the ends of the reinforcement elements on the longitudinal sides (their end sides) to the side walls facing one another, it is provided in an exemplary embodiment that the side sections extending in the height direction of the basin have bent projections as engagement projections on the longitudinal sides, by means of which the reinforcement elements are connected to the side walls lying against.
In order to make optimal use of the installation space of the battery housing, in the case of deep-drawn pot bodies having rounded edge regions, the edge sections of the reinforcement elements spaced apart from the side walls are preferably located in the end regions of the rounded edge regions, in the transition regions of the rounded edge regions to the respectively adjoining side walls. It is considered unnecessary that the stiffening element extends beyond the rounded edge region, which would otherwise reduce the volume of the basin for the battery module.
It is to be understood that the two opposite sides of the basin interior, which are opposite each other, are connected to each other by means of a brace placed on the bottom plate of the basin for further reinforcement of the battery housing and spacing of the battery modules to be accommodated.
For weight optimization, it is expedient if the frame structure surrounding the outside consists of lightweight metal cavity profile parts. At the same time, a particular stability of the frame structure is ensured. Alternatively, the frame structure surrounded on the outside is formed from sheet material.
Drawings
The invention is elucidated below with reference to the drawings on the basis of embodiments. In the drawings:
figure 1 shows a perspective view of a first battery housing according to the invention,
figure 2 shows a top view of the battery housing according to figure 1,
figure 3 shows a partial cross-sectional view of the battery housing according to figure 2 taken along line a-B,
figure 4 shows an enlarged part of the battery housing according to figure 2 in the lower left corner region of figure 2,
fig. 5 shows a top view of a further battery housing according to the invention, in which a battery module is inserted,
fig. 6 shows a partial sectional view of the battery housing according to fig. 5.
Detailed Description
The battery housing 1 comprises a base plate 2 and side walls 3,3.1,3.2,3.3 formed on the base plate. The side walls 3,3.1,3.2,3.3 are at the upper side in the form of outwardly bent flanges. These elements form a basin 4. The tub 4 is formed by drawing into a shape visible in the drawing. The tub 4 of the illustrated embodiment is a tub made of steel plate. The exterior of the tub 4 is surrounded by a frame structure 5. The outer frame structure 5 is assembled from individual cavity profile elements 5.1, 5.2. The cavity profiles 5.1, 5.2 are connected to one another in the region of their end sections. For the illustrated embodiment, this connection is a welded connection. The longitudinal-side cavity section 5.1 has a greater width than the transverse-side cavity section 5.2. For the embodiment shown, the width of the longitudinal-side cavity profile 5.1 is approximately twice the width of the transverse-side cavity profile 5.2.
In this embodiment, a rounded edge region is present between two adjacent sides of the basin 4. This is visible in the transition between the side wall 3 and the side wall 3.1 (with reference numeral 6) and in the transition between the side wall 3 and the side wall 3.3 (with reference numeral 6.1) with reference to the side wall 3. One of the two lateral cavity profile parts 5.2, which has a smaller width, is provided on the outside of the side wall 3 of the basin 4. A reinforcing element 7 is provided on the inside following side wall 3. As can be seen from the top view of the battery housing 1 in fig. 2, the stiffening element 7 extends between two opposite rounded edge regions 6, 6.1. Such reinforcing elements 7.1 are likewise provided on the inner side on the opposite side wall 3.2. The following describes the resulting construction of the reinforcement element 7 and the structure associated with the side wall 3. These embodiments also apply to the side wall 3.2, the reinforcing element 7.1 and the other transverse side cavity profile structure.
The construction of the stiffening element 7 and the structure of the side wall 3 of the basin 4 is shown in fig. 3. First, it is seen that the cavity profile 5.2 on the lateral side has a lower flange F projecting below the floor 2 of the basin 4. The same applies to the longitudinal-side cavity profile 5.1. Thus, the bottom plate 2 of the tub 4 is located on the flange F on the edge side. The reinforcing element 7 in the embodiment shown is a profiled steel sheet member. The stiffening element has two mutually angled edge sections 9, 9.1. The free end of each edge section 9,9.1 is bent away from the plane of the respective edge section 9,9.1 to form a joining flange 10 or 10.1. For the embodiment shown, the edge sections 9,9.1 form an angle of 90 degrees. The engagement flanges 10, 10.1 are parallel to the inwardly directed side of the bottom plate 2 or the side wall 3. By means of the joining flanges 10, 10.1, the reinforcement element 7 is connected to the floor 2 or the side wall 3, respectively, by spot welding. By means of this positive connection of the reinforcing element 7 to the side wall 3 or to the adjacent floor 2 of the basin 4, the lower section of the side wall 3 and the adjoining section of the floor 2 form a cavity profile, which extends along the side wall 3 between the rounded edge regions 6, 6.1 facing one another (see fig. 2). On the vertically extending edge sections 9 of the reinforcement element 7, in each case one bent projection 11 is connected to the end face. Said protrusions 11 serve for the connection of the stiffening element 7 to the side wall 3.1 or 3.3. This can also be achieved by spot welding.
The frame structure 5 for protecting the cell volume inside the basin is therefore not structurally weakened in the region of the narrower lateral cavity profile 5.2, since the stiffening element 7 is arranged inside the basin, compared to the design in which this structure is present outside the basin 4. In this battery case 1, therefore, a part of the outer frame structure is transferred to the inside of the tub 4. The stiffening element 7 is located within the rounded edge regions 6, 6.1 which do not or do not serve to a significant extent as cell volumes. The sectional view of fig. 3 shows that the transverse-side cavity profile 5.2 has a width which hardly exceeds the outer end of the circumferential mounting flange of the basin 4. Thus, the basin 4 may have a greater length without increasing the overall length of the battery housing 1, allowing for an optimal use of the available mounting volume with a greater basin volume available for the battery module. The rounded edge regions 6, 6.1 which are not available for accommodating the cell volume are used in the cell housing 1 to form structural elements, i.e. reinforcing elements 7.
In fig. 3, the boundary between the rounded edge region 6.1 and the adjoining side wall 3 is denoted by the reference numeral 12. This means that the reinforcing element 7 and its edge sections 9,9.1 extend only in the rounded edge areas 6, 6.1. Furthermore, the configuration in which the engagement flange 10 and the projection 11 extend towards the side wall 3.3 does not impair the volume of the battery to be accommodated.
As can also be seen from the enlarged sectional view of fig. 4 from the top view of fig. 2, the stiffening element 7 is mounted in the opposite rounded edge regions 6, 6.1. The unusable width of the rounded edge areas 6, 6.1 from the point of view of the interior of the tub is marked a in the figure 2 . The distance A 2 Indicating the distance between the inner side of the wall 3 and the dividing line 12. The extension of the edge section 9 from the side wall 3 to the inner side of the basin body is marked as A 1 . It is clearly evident that the depth occupied by the stiffening element 7 in relation thereto is significantly smaller than with a 2 The depth of the rounded edge region is indicated. These distances A 1 And A 2 As also shown in fig. 3.
As can be seen in fig. 1 and 2, it can be appreciated that a further strengthening of the battery housing 1 is achieved when the two sides 3.1, 3.3 opposite one another relative to the interior of the basin are connected to one another by means of a brace 13 which is preferably placed on the base plate 2 of the basin 4 and connected thereto. Whereby a separate battery module receiving part is also provided.
Fig. 5 and 6 show a further embodiment of the battery housing 1.1 according to the invention. The battery housing 1.1 is essentially identical to the battery housing 1 in the previous figures, but in contrast to this, the adjacent side walls of the battery tub 4.1 have no rounded edge regions 6.2. Unless otherwise specified below, the description of the battery case 1 with respect to the above-described embodiment applies equally to the battery case 1.1. The basin 4.1 is a so-called constructed basin, in which the side walls are bent over the floor and welded to one another along the sides adjoining the side walls to form a rim. The stiffening elements 7.2, 7.3 are mounted on two narrow sides in the basin, as are their basin 4 opposite the battery case 1, connected to adjacent side walls and bottom plates (see fig. 6).
Fig. 5 shows the battery housing 1.1 with the cover removed and the battery module 14 mounted therein. The battery modules 14 each have two connecting flanges 15 on their longitudinal sides in the respective end regions. These connection flanges protrude in the plane of the base plate of the basin 4.1 with respect to the longitudinal sides of the individual battery modules 14 and serve as connection means in order to fix the battery modules 14 to the basin 4.1. In order to distinguish the basin, a brace 13.1 is also provided in the basin, as in the embodiment of fig. 1 to 4. The height of the stiffening elements 7.2, 7.3 is equal to the height of the stay 13.1. The height of this component is smaller than the height of the side wall of the basin 4.1, so that, as shown in fig. 6, the connecting flange 15 rests on the edge section 9.2 of the stiffening element 7.2 or 7.3. The reinforcement elements 7.2, 7.3 have holes 16 for receiving fastening bolts, which serve, for example, as fastening elements for fastening the battery module 14 by means of its connecting flange 15 to the reinforcement elements 7.2, 7.3 and to the struts 13.1. It is obvious that rivets can also be used at the location of the bolts.
The peripheral battery modules 14 are fastened in the same manner to the individual struts 13.1 with their connection flanges 15 opposite the reinforcement elements 7.2, 7.3.
It can be seen from the figures that the stiffening elements 7.2, 7.3 are located within the basin 4.1, and therefore the presence or absence of unused holes 16 in the stiffening elements 7.2, 7.3 is not at all important for the tightness of the basin 4.1. Also the bolting need not be performed in a sealing manner.
The connecting flanges 15 of the battery modules 14 are offset from each other with respect to the opposite longitudinal sides. This allows the individual battery modules 14 to be assembled and disassembled independently of one another within the 4.1 basin of the battery housing 1.1.
In this embodiment of the battery housing 1.1, the width of the transverse cavity profile 5.3 is smaller than the width of the longitudinal cavity profile 5.4.
The invention is described by way of example within the framework of these embodiments. Numerous other designs may be made by the skilled person to embody the invention without departing from the scope of protection of the description, which designs do not have to be further elucidated within the framework of these embodiments.
List of reference numerals
1,1.1 Battery Module
2. Bottom plate
3,3.1,3.2,3.3 side wall
4.1 Basin body
5. Frame structure
5.1, 5.2, 5.3, 5.4 cavity section bar
6. 6.1, 6.2 edge area
7. 7.1, 7.2, 7.3 reinforcing elements
8,8.1 end section
9,9.1,9.2 side sections
10 10.1 engagement flange
11. Protrusions
12. Separation line
13 13.1 stay bar
14. Battery module
15. Connecting flange
16. Hole(s)
A 1 Depth of reinforcing element
A 2 Depth of rounded edge region
F flange
Claims (11)
1. Battery housing for a motor-driven vehicle, comprising a basin body (4; 4.1) and a frame structure (5) surrounding the basin body on the outside, the basin body having a base plate (2) and side walls (3, 3.1,3.2, 3.3) formed on the base plate, wherein the edge regions of the basin body, which are formed by adjacent side walls (3, 3.1;3, 3.3), are rounded, characterized in that reinforcing elements (7, 7.1;7.2, 7.3) are arranged on the inside of at least one side wall, which form cavity profiles or are designed as cavity profiles, and the rounded edge regions delimit a side wall (3) with respect to the side walls (3.1, 3.3) adjacent to the reinforcing elements, which extend between the edge regions and follow the longitudinal extension of the side walls (3), and are connected to the side walls (3) and the base plate (2) and in the end regions (8, 7.1;7.2, 7.3) of the reinforcing elements are arranged on the inside of the basin body, which the frame structure (4; 4, 7.1, 7.3) is arranged on the outside of the basin body (4; 4.1), which the side walls (3) are connected to the side walls (3) and the frame structure (4; 4.1, 7.3.3) of the basin body (4; 4.1) is mounted on the side walls (1, 4.1, 4.5.1) and the side walls (3) 7.3 At its longitudinal ends, a bent projection (11) formed on the wall of the reinforcement element that delimits the interior of the basin, said projection (11) being adjacent to the side walls (3.1, 3.3) and the projection (11) being connected to the side walls (3.1, 3.3), wherein the frame structure (5) is composed of a plurality of profile parts that are connected to one another in the end regions thereof, and the reinforcement elements (7, 7.1;7.2, 7.3) are located on the inner side of the side walls (3, 3.2), and profile elements (5.2; 5.3 Is smaller than the width of the remaining profile elements (5.1; 5.4 A) width.
2. Battery housing according to claim 1, characterized in that the stiffening elements (7, 7.1;7.2, 7.3) are adjacent to the side walls (3.1, 3.3) and that the stiffening elements (7, 7.1;7.2, 7.3) are connected to the side walls (3.1, 3.3) by means of their end sections (8, 8.1) on the end sides.
3. Battery housing according to claim 1, characterized in that the stiffening element (7, 7.1;7.2, 7.3) embodied as a hollow profile has two side sections (9, 9.1; 9.2) arranged bent over one another, wherein the two side sections (9, 9.1; 9.2) have, at their ends which extend along the longitudinal extension of the stiffening element (7, 7.1;7.2, 7.3), joining flanges (10, 10.1) bent over the plane of the respective side section (9, 9.1), wherein the first side section (9) is connected to the base plate (2) by means of its joining flange (10), and the second side section (9.1) is connected to the side wall of the basin (4; 4.1) provided with the stiffening element by means of its joining flange (10.1).
4. A battery housing according to claim 3, characterized in that the first edge section (9) of the stiffening element (7, 7.1) extends parallel to the side wall on which it is arranged, and the second edge section (9.1, 9.2) extends parallel to the bottom plate (2) of the basin (4; 4.1).
5. Battery case according to claim 1, characterized in that the profile is a cavity profile (5.1, 5.2;5.3, 5.4).
6. Battery housing according to claim 1, characterized in that the stiffening elements (7, 7.1;7.2, 7.3) are arranged on the inner side of the side walls (3, 3.2), respectively, and the width of the profile elements (5.2; 5.3) arranged on the outer side of the side walls (3, 3.2) is equal to 50% of the width of the remaining profile elements (5.1; 5.4).
7. Battery housing according to claim 1, characterized in that stiffening elements (7, 7.1;7.2, 7.3) are arranged on two opposite side walls (3, 3.2) of the basin (4), respectively.
8. The battery housing according to claim 1, characterized in that the two mutually opposite side walls (3.1, 3.3) of the reference tub are connected to each other by means of a strut (13; 13.1) arranged on the base plate (2) of the tub (4; 4.1) dividing the tub into a plurality of individual battery module receptacles.
9. Battery housing according to claim 1, characterized in that the basin (4) is deep drawn.
10. Battery housing according to claim 9, characterized in that the ends of the reinforcement elements (7, 7.1) pointing into the interior of the basin (4) end in the end regions of the mutually opposite rounded edge regions, in the transition regions of the rounded edge regions to the adjoining side walls.
11. Battery housing according to claim 1, characterized in that at least one battery module (14) is connected to the reinforcement element (7.2, 7.3) by means of a connecting flange (15).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018120371.3A DE102018120371B4 (en) | 2018-08-21 | 2018-08-21 | Battery housing for a vehicle driven by an electric motor |
| DE102018120371.3 | 2018-08-21 | ||
| PCT/EP2019/072320 WO2020038972A1 (en) | 2018-08-21 | 2019-08-21 | Battery housing for a vehicle driven by an electric motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112585809A CN112585809A (en) | 2021-03-30 |
| CN112585809B true CN112585809B (en) | 2023-11-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980054827.1A Active CN112585809B (en) | 2018-08-21 | 2019-08-21 | Battery housing for a motor-driven vehicle |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN112585809B (en) |
| DE (1) | DE102018120371B4 (en) |
| WO (1) | WO2020038972A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019203400A1 (en) * | 2019-03-13 | 2020-09-17 | Thyssenkrupp Steel Europe Ag | Battery case |
| DE102020120569A1 (en) | 2020-08-04 | 2022-02-10 | Audi Aktiengesellschaft | Battery system, method for operating a battery system and motor vehicle with a battery system |
| DE102020129785A1 (en) * | 2020-11-11 | 2022-05-12 | Kautex Textron Gmbh & Co. Kg | Battery housing, traction battery and motor vehicle |
| CN113211545B (en) * | 2021-03-15 | 2022-11-08 | 万向一二三股份公司 | Terrace die structure for improving deep punching capability of power soft package lithium ion battery |
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- 2018-08-21 DE DE102018120371.3A patent/DE102018120371B4/en active Active
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2019
- 2019-08-21 WO PCT/EP2019/072320 patent/WO2020038972A1/en active Application Filing
- 2019-08-21 CN CN201980054827.1A patent/CN112585809B/en active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| DE102018120371B4 (en) | 2021-07-29 |
| CN112585809A (en) | 2021-03-30 |
| DE102018120371A1 (en) | 2020-02-27 |
| WO2020038972A1 (en) | 2020-02-27 |
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