DE102018114422A1 - Battery holder for a vehicle - Google Patents

Abstract

The disclosure relates to a battery holder (100) for accommodating a plurality of battery modules (133) in an electrically drivable vehicle, with a battery holder (101) with a base plate (103) for accommodating the plurality of battery modules (133), and a heat exchanger structure ( 105) for the temperature control of the battery modules (133) which is formed in the base plate (103), the heat exchanger structure (105) having fluid hollow channels (107, 107-1, 107-2) which are formed within the base plate (103) and are designed to conduct fluid, the fluid hollow channels (107, 107-1, 107-2) each having a profile inner wall (115) which delimits the respective fluid hollow channel (107, 107-1, 107-2). Indentations (117, 117-1, 117-2) are formed in the profile inner walls (115), which extend at least in sections counter to the fluid flow direction (113) of the respective fluid hollow channel (107, 107-1, 107-2) in order to prevent turbulence To cause fluid flow.

Description

The present disclosure relates to a battery holder for accommodating a plurality of battery modules in a vehicle, in particular an electrically driven vehicle.

Battery holders, which are arranged between the axles of the vehicle, are usually used to hold battery modules for providing electrical energy in electrically driven vehicles.

For the efficient production of such battery holders, profile elements can be used, which are described in the publication DE 10 2012 100 977 B3 are described.

It is the object of the present disclosure to provide another efficient battery holder.

This object is solved by the features of the independent claims. Advantageous embodiments are the subject of the dependent claims, the description and the accompanying figures.

The present disclosure is based on the knowledge that the above object can be achieved by a battery holder, which ensures effective temperature control of the battery modules, in particular cooling of the battery modules. In order to bring about an advantageous heat exchange between the battery modules and the battery holder required for effective temperature control, the battery holder has a heat exchanger structure with fluid hollow channels which are thermally coupled to the battery modules.

In order to ensure a particularly effective heat exchange between the battery modules and fluid conducted through the fluid hollow channels, it is provided according to the invention that a turbulent fluid flow of the fluid flowing through the fluid hollow channels is brought about.

According to a first aspect, the disclosure relates to a battery holder for accommodating a plurality of battery modules in an electrically drivable vehicle, with a battery holder with a base plate for accommodating the plurality of battery modules, and a heat exchanger structure for temperature control of the battery modules, which is formed in the base plate , wherein the heat exchanger structure has hollow fluid channels which are formed within the base plate and are designed to conduct fluid, the hollow fluid channels each having a profile inner wall which delimits the respective fluid hollow channel, indentations being formed in the profile inner walls, which at least in sections counter to the direction of fluid flow extend respective fluid hollow channel to cause a turbulent fluid flow.

This achieves the technical advantage that the indentations extending counter to the direction of the fluid flow can cause turbulence in the fluid flow without causing an excessive flow resistance for fluid flowing through the fluid hollow channels.

A correspondingly turbulent fluid flow causes a particularly advantageous mixing of the fluid within the fluid hollow channels, so that a particularly uniform temperature distribution within the fluid and the base plate or the battery holder is ensured, which has an advantageous effect on the heat exchange capabilities of the fluid. In particular, significant temperature gradients in the fluid flow can thus be avoided, and heat from the battery modules can be dissipated via the base plate and the fluid.

In addition, the indentations formed in the profile inner wall increase the area of the profile inner wall available for heat exchange, so that a particularly effective heat exchange can be brought about.

In addition, the indentations can be introduced into the inner wall of the profile during the manufacturing process of the battery holder in a particularly advantageous manner.

In one embodiment, the battery holder is extruded in one piece. In one embodiment, the battery holder comprises a plurality of battery carriers or base plates, which are each formed in one piece with the heat exchanger structure. The base plates or battery carriers are arranged next to one another and joined together, in particular joined together in a fluid-tight manner.

In one embodiment, the fluid hollow channels are arranged adjacent to one another within the base plate, or the fluid hollow channels are arranged adjacent to one another within the base plate, spaced apart from one another.

In one embodiment, the fluid hollow channels have an oval, in particular circular, rectangular and / or elongated cross section.

In one embodiment, the hollow fluid channels run parallel to one another.

In an advantageous embodiment, the fluid hollow channels are tubular in the battery carrier.

In an advantageous embodiment, the base plate has a plurality of module receptacles arranged next to one another, each module receptacle being provided for receiving one battery module or a plurality of battery modules, the module receptacles being separated from one another in particular by partition walls. The partitions lie in particular on the base plate, contact the base plate or are integrally connected to the base plate. The partitions can be connected to one another, in particular connected in a materially bonded manner. However, it is also possible for the partitions to be connected indirectly to the base plate, for example via coupling parts. In one embodiment, the module receptacles can also be formed by recesses in the base plate.

In one embodiment, the base plate is designed as an underride protection for the vehicle or a further protection plate is provided as underride protection underneath the base plate.

In one embodiment, the heat exchanger structure is part of a refrigeration cycle or a heat cycle.

In one embodiment, the base plate is formed from a metal, in particular light metal, in particular aluminum or aluminum alloy.

In one embodiment, the base plate has a top side facing the battery modules and a bottom side facing away from the top side, the hollow fluid channels being formed within the bottom plate between the top side and the bottom side, and the hollow fluid channels being thermally coupled to the top side and / or to the top side ,

This achieves the technical advantage that a particularly effective heat exchange between the heat exchanger structure and the battery modules is ensured by the thermal coupling of the fluid hollow channels to the top of the plate, and / or that a particularly effective heat exchange between the heat exchanger structure is ensured by the thermal coupling of the fluid hollow channels to the underside of the plate and an outer area of the base plate is ensured.

In one embodiment, the profile inner walls each have a profile inner wall top facing the plate top and a profile inner wall bottom facing the plate underside, wherein the indentations are formed in the profile inner wall top and / or in the profile inner wall bottom.

This achieves the technical advantage that the indentations can either be formed exclusively in the upper side of the inner wall of the profile, exclusively in the lower side of the inner wall of the profile, or both in the upper side of the inner wall and in the lower side of the inner wall to provide a particularly advantageous heat exchanger structure.

In one embodiment, first indentations are formed in the upper side of the inner wall of the profile, and second indentations are formed in the lower side of the inner wall of the profile, the first and second indentations being arranged offset to one another or not offset to one another in the direction of fluid flow.

This achieves the technical advantage that the turbulence in the fluid flow can be advantageously controlled by arranging the indentations in the upper side of the profile inner wall and in the lower side of the profile inner wall by staggering or not staggering. An offset arrangement of the indentations here means that a projection of a first indentation formed in the upper side of the inner wall of the profile is arranged on the lower side of the inner wall of the profile between two second indentations of the lower side of the inner wall of the profile. An arrangement that is not offset here means that a projection of a first indentation on the underside of the profile inner wall overlaps with a second indentation.

In one embodiment, the indentations comprise increases in the profile inner walls, which reduce the inner diameter of the respective fluid hollow channel, and / or the indentations comprise indentations in the profile inner walls, which increase the inner diameter of the respective fluid hollow channel.

This achieves the technical advantage that a turbulent fluid flow can advantageously be provided by forming elevations and / or depressions in the profile inner walls. The formation of elevations can be made possible in particular by pressing in the base plate, so that the inside walls of the profile are indented and the inside diameter of the respective hollow fluid channel is reduced.

In one embodiment, the indentations each have an edge and / or a rounded side, which at least in sections extends against the fluid flow direction of the respective fluid hollow channel.

This has the technical advantage that swirls form in the fluid flow at the edge of the respective indentations and / or that a deflection or deflection of the fluid flow on the inner walls of the profile can be achieved on a rounded side of the respective indentations.

In one embodiment, the indentations are formed parallel to one another in the profile inner walls, and / or the indentations are arranged at a constant distance from one another.

This achieves the technical advantage that a uniform turbulent fluid flow can be ensured within the fluid hollow channels.

In one embodiment, the indentations each extend at an angle to a longitudinal axis of the respective fluid hollow channel extending along the fluid flow direction in order to form an angle between the longitudinal axis of the respective fluid hollow channel and an extension direction of the respective indentation, the angle being in particular between 100 ° and 170 ° ,

This achieves the technical advantage that the angular arrangement of the indentations makes it possible to provide turbulence in the fluid flow in a particularly advantageous manner.

In one embodiment, the fluid hollow ducts comprise first fluid hollow ducts and second fluid hollow ducts, wherein a hollow duct is arranged between a first fluid hollow duct and a second fluid hollow duct, through which no fluid flows.

This achieves the technical advantage that the hollow channels arranged between a first and a second fluid hollow channel each provide an advantageous structure for the battery holder.

In one embodiment, the indentations formed in the profile inner walls of the first fluid hollow channels and second fluid hollow channels run into the hollow channels or bridge the hollow channels.

This has the technical advantage that the number of indentations introduced into the battery holder can be reduced.

In one embodiment, the base plate has a base plate height and the indentations have an indentation height which is less than the base plate height, the indentation height being in particular between 5% and 30% of the base plate height.

This achieves the technical advantage that an advantageously turbulent fluid flow can be provided in the fluid hollow channels.

In one embodiment, the fluid hollow channels have a fluid hollow channel width, and the indentations have an indentation width which is equal to or less than the fluid hollow channel width, the indentation width being in particular between 30% and 100% of the fluid hollow channel width.

This achieves the technical advantage that an advantageously turbulent fluid flow can be provided in the fluid hollow channels.

In one embodiment, the fluid hollow ducts are each fluidically separated from one another by duct partitions, in particular no indentations being formed in the duct partitions.

This has the technical advantage that the indentations are in particular not arranged in the channel partitions between the fluid hollow channels, but rather in an upper side of the inner wall of the profile and / or in a lower side of the inner wall of the inner wall of the profile.

In one embodiment, the battery holder has a heat transfer element, in particular a heat-conducting film, the heat transfer element being arranged between the base plate and the battery modules, and the heat transfer element being arranged in particular between a top side of the plate facing the battery modules and the battery modules.

This has the technical advantage that the heat exchange element between the battery modules and the base plate can be improved by the heat transfer element.

In one embodiment, the battery holder has a plurality of battery carriers which are connected to one another in terms of fluid technology, the battery carriers being connected to one another in particular in a force-locking, positive-locking and / or material-locking manner.

This achieves the technical advantage that the area available for the battery modules can easily be enlarged by fluidly connecting a plurality of battery carriers to one another.

In one embodiment, the battery holder has a tubular fluid collector, which is arranged on an end face of the base plate, which is fluidically connected to the fluid hollow channels, and which is designed to receive fluid emerging from the fluid hollow channels or to guide fluid entering the fluid hollow channels, the tubular Fluid collector is in particular connected to the base plate in a form-fitting, force-fitting and / or material-fitting manner.

This achieves the technical advantage that the fluid collector arranged on an end face of the base plate ensures effective supply or discharge of fluid with respect to the heat exchanger structure. In this case, a first tubular fluid collector, which is designed to guide fluid entering the fluid hollow channels, is arranged in particular on a first end face of the base plate, and a second tubular fluid collector, which is designed, is arranged in particular on a second end face of the base plate facing away from the first end face. to discharge fluid emerging from the fluid hollow channels.

In one embodiment, the tubular fluid collector extends along the end face, the tubular fluid collector having fluid nozzles which are inserted in a fluid-tight manner in the hollow hollow channel openings of the fluid hollow channels.

According to a second aspect, the disclosure relates to a method for producing a battery holder for accommodating a plurality of battery modules in an electrically drivable vehicle, comprising the following method steps, extruding a metal into a base plate with a heat exchanger structure for the temperature control of the battery modules, the heat exchanger structure having fluid hollow channels which are formed within the base plate and are designed to conduct fluid, the fluid hollow channels each having a profile inner wall which delimit the respective fluid hollow channel, and forms of indentations in the profile inner walls, the indentations extending at least in sections counter to the fluid flow direction of the respective fluid hollow channel to cause flow resistance and turbulent fluid flow.

In one embodiment, the indentations are formed by rolling processing at least along the hollow fluid channels, and the base plate thus formed is then actively cooled.

This has the technical advantage that the indentations obtained by the molding can be effectively provided in the profile inner walls.

In one embodiment, the indentation is formed by pressing a pressing tool onto the base plate.

This achieves the technical advantage that indentations in the profile inner walls can be effectively provided by pressing the pressing tool onto the base plate.

In one embodiment, the molding of indentations is carried out after the extrusion of the base plate, the molding being carried out in particular in a hot state of the extruded base plate.

This gives the technical advantage that the indentations can be shaped more easily when the extruded base plate is hot. A hot state of the extruded base plate here comprises a temperature of the extruded base plate of more than 100 ° C., in particular of more than 200 ° C., in particular of more than 300 ° C.

• 1 eine schematische Ansicht einer Batteriehalterung gemäß einer Ausführungsform;
• 2A, 2B, 2C Ausführungsformen von Fluidhohlkanälen mit Eindellungen in einer Batteriehalterung;
• 3 eine Batteriehalterung mit einem Batteriemodul in einer Ausführungsform;
• 4 einer Batteriehalterung mit Fluidhohlkanälen mit Eindellungen in einer Ausführungsform;
• 5 einer Batteriehalterung mit Fluidhohlkanälen mit Eindellungen in einer Ausführungsform;
• 6 einer Batteriehalterung mit rohrförmigen Fluidsammlern in einer Ausführungsform; und
• 7 eine schematische Darstellung eines Verfahrens zum Herstellen einer Batteriehalterung.

Further exemplary embodiments are explained with reference to the attached figures. Show it:

• 1 a schematic view of a battery holder according to an embodiment;
• 2A . 2 B . 2C Embodiments of hollow fluid channels with indentations in a battery holder;
• 3 a battery holder with a battery module in one embodiment;
• 4 a battery holder with fluid hollow channels with indentations in one embodiment;
• 5 a battery holder with fluid hollow channels with indentations in one embodiment;
• 6 a battery holder with tubular fluid collectors in one embodiment; and
• 7 is a schematic representation of a method for manufacturing a battery holder.

1 shows a schematic view of a battery holder for receiving a plurality of battery modules in an electrically drivable vehicle. The battery holder 100 has a battery holder 101 with a bottom plate 103 to accommodate the plurality of battery modules, wherein in the 1 the battery modules are not shown. The majority of electrical battery modules can in particular on the base plate 103 of the battery holder 101 be put on. The battery holder 101 can be a variety of Have module receptacles for receiving one electric battery module or several electric battery modules, which are separated from one another in particular by partitions, and thus form niches or depressions for the respective electric battery modules.

The battery holder 100 is extruded in one piece.

The battery holder 100 can have a further function and be designed as an underbody plate of the vehicle, which provides underrun protection for the vehicle. This can in particular be achieved in that a further wall is formed at a distance below the fluid channel walls. This means that the fluid channel has a lower channel height than the height of the base plate, so that the distance between the further wall forming the underside of the plate and the fluid channel provides a deformation space during a Boller test or when an obstacle is passed.

The battery holder 100 can also have a plurality of battery carriers 101 comprise which are connected to each other in a fluid-tight manner. Here are the battery carriers 101 in particular connected non-positively, positively and / or integrally.

The battery holder 100 also has a heat exchanger structure 105 for the temperature control of the battery modules, whereby the heat exchanger structure 105 in the bottom plate 103 is shaped. The heat exchanger structure 105 has hollow fluid channels 107 on which is inside the bottom plate 103 are formed and designed to conduct fluid. In the 1 are just a few of the fluid channels 107 the heat exchanger structure 105 shown.

Through the through the fluid hollow channels 107 the heat exchanger structure 105 led fluid can through the battery holder 101 recorded electrical battery modules can be effectively tempered. So the heat exchanger structure 105 designed to temper the plurality of electrical battery modules, in particular to cool and / or heat them. The heat exchanger structure 105 is penetrated by a fluid, the fluid being able to absorb heat from the battery modules and dissipating it effectively from the battery modules and / or the fluid being able to emit heat to the battery modules and effectively heating the battery modules. As a result, a constant temperature of the battery modules can be ensured during the operation of the battery modules, which has an advantageous effect on the performance parameters and on the service life of the electrical battery modules.

On one end 109 the bottom plate 103 point the fluid hollow channels 107 each have a fluid hollow channel opening 111 through which fluid from the respective fluid channel 107 led out, or through which fluid in the respective fluid hollow channel 107 can be initiated. In the in 1 Embodiment shown is fluid through the fluid hollow channel openings 111 into the fluid hollow channels 107 introduced and in a fluid flow direction 113 through the fluid hollow channels 107 directed.

The fluid hollow channels 107 run in particular parallel to each other.

The fluid hollow channels 107 can in particular have an oval, in particular circular, rectangular and / or elongated cross section. Like in the 1 the fluid hollow channels are shown 107 inside the bottom plate 103 in particular arranged side by side. Alternatively, the fluid hollow channels 107 also spaced apart from each other in the base plate 103 be arranged.

The fluid hollow channels 107 each have a profile inner wall 115 on which the respective fluid hollow channel 107 limit. In the profile walls 115 are indentations 117 shaped, which at least in sections counter to the fluid flow direction 113 of the respective fluid hollow channel 107 extend to cause turbulent fluid flow.

Because the indentations 117 at least in sections against the direction of fluid flow 113 extend, they also bring about a certain flow resistance for through the fluid hollow channels 107 flowing fluid. This forms on the indentation 117 Swirling in the flowing fluid, whereby a turbulent fluid flow arises, so that a particularly effective mixing of the fluid is ensured by the turbulent fluid flow. The mixing of the fluid ensures a particularly effective heat exchange within the fluid, so that heat gradients within the through the fluid hollow channels 107 flowing fluids can be prevented. In addition, the indentation increases 117 the area of the profile inner walls available for heat exchange with the fluid 115 , so that a particularly effective heat exchange through the heat exchanger structure 105 can be ensured.

The indentations 117 include in particular increases in the profile inner walls 115 , which is the inside diameter of the respective fluid hollow channel 107 reduce, and / or include the indentations 117 Deepening of the inner walls of the profile 115 which comprise the inner diameter of the respective fluid hollow channel 107 enlarge.

Even if in the in 1 shown view only a dent 117 is shown, the fluid hollow channels 107 a variety of indentations 117 have which in all fluid hollow channels 107 or alternatively only in certain fluid hollow channels 107 are arranged.

Here are the fluid channels 107 each through duct partitions 119 fluidically separated from one another, in particular in the channel partition walls 119 no indentations 117 are formed.

The 2A . 2 B and 2C show embodiments of fluid hollow channels with indentations in a battery holder. Here is in the 2A . 2 B and 2C one fluid channel each 107 shown in a sectional view.

The battery holder 101 a battery holder 100 each have a base plate 103 to accommodate a plurality of battery modules. The bottom plate 103 has a plate top facing the battery modules 121 and one of the top of the plate 121 facing underside of the plate 123 on. Here are the fluid channels 107 inside the bottom plate 103 between the top of the plate 121 and the underside of the plate 123 educated. The fluid hollow channels 107 are with the top of the plate 121 and / or with the underside of the plate 123 thermally coupled. The top of the plate 121 is connected to the battery module directly or via a thermal compound.

On the opposite faces 109 the bottom plate 103 each has hollow fluid channels 107 each have a fluid hollow channel opening 111 through which fluid into the respective fluid hollow channel 107 introduced or can be carried out. Like in the 2 is shown, the fluid through the respective fluid hollow channel 107 in a fluid flow direction 113 guided.

The fluid hollow channels 107 each have a profile inner wall 115 on which the respective fluid hollow channel 107 limit. In the profile walls 115 are indentations 117 shaped, which at least in sections counter to the fluid flow direction 113 of the respective fluid hollow channel 107 extend to cause flow resistance and turbulent fluid flow.

In the in 2A Embodiment shown are the indentations 117 only in one of the underside of the plate 123 facing underside of the inner wall of the profile 125 shaped. In the in 2 B Embodiment shown are the indentations 117 only in one of the tops of the plates 121 facing top of the inner wall of the profile 127 shaped. In the in 2C Embodiment shown are the indentations 117 both in the profile inner wall top 127 as well as in the bottom of the profile wall 125 shaped.

Like in the 2C is shown, are in the profile inner wall top 127 first indentations 117-1 shaped and are in the profile inner wall underside 125 second dents 117-2 shaped. The first and second dents 117-1 . 117-2 are in particular offset from one another in the respective profile inner wall side 125 . 127 shaped. An offset arrangement means that a projection of a first indentation 117-1 on the bottom of the profile inner wall 125 between two second indentations 117-2 is arranged. As a result, an excessive narrowing of the cross-sectional area of a hollow fluid channel is avoided, and an excessive increase in the flow resistance is also avoided.

As in the 2A . 2 B and 2C the indentations are shown 117 especially one edge each 129 which, at least in sections, is counter to the fluid flow direction 113 extends to cause flow resistance and turbulent fluid flow. However, the indentations preferably point 117 in particular a rounded side which, at least in sections, opposes the direction of fluid flow 113 extends.

In addition, the indentations 117 in particular parallel to each other in the profile inner wall 115 be shaped. In addition, the indentations 117 especially a constant distance 131 to each other.

3 shows a battery holder with a battery module in one embodiment. Here is in the 3 one fluid channel each 107 shown in a sectional view. The battery holder 100 has a base plate 103 with hollow fluid channels 107 on which between a plate top 121 and a plate underside 123 are arranged. The fluid hollow channels 107 are each by a profile inner wall 115 limited, being in the profile inner walls 115 dents 117 are formed, which at least in sections counter to the fluid flow direction 113 extend to cause turbulent fluid flow.

For details, please refer to the comments regarding the 1 and the 2 directed.

The bottom plate 103 takes a plurality of battery modules 133 on, being in the 3 only one battery module 133 is shown schematically. The battery module 133 is on the top of the plate 121 attached and the battery module 133 is with the fluid hollow channels 107 thermally coupled. To heat exchange between the battery module 133 and the fluid hollow channels 107 is to improve between the battery module 133 and the bottom plate 103 a heat transfer element 135 , in particular a heat-conducting film, arranged. Here is the heat transfer element 135 especially between the top of the plate 121 and the battery module 133 arranged.

4 shows a battery holder with fluid hollow channels with indentations in one embodiment. Here are in the 4 a plurality of fluid hollow channels 107 shown in a sectional view.

The battery holder 100 has a base plate 103 with hollow fluid channels 107 on which between a plate top 121 and a plate underside 123 are arranged, the top of the plate 121 and plate underside 123 in 4 is not shown. The fluid hollow channels 107 extend between two opposite end faces 109 the bottom plate 103 and are each by a profile inner wall 115 limited, being in the profile inner walls 115 dents 117 are formed, which at least in sections counter to the fluid flow direction 113 extend to cause flow resistance and turbulent fluid flow.

For details, please refer to the comments regarding the 1 and the 2 directed.

In the in 4 The embodiment shown are the fluid hollow channels 107 are not arranged directly next to one another and comprise first fluid hollow channels 107-1 , being in the profile inner walls 115 the first fluid channels 107-1 dents 117 are formed, and comprising second fluid hollow channels 107-2 , being in the profile inner walls 115 the second fluid hollow channels 107-2 again indentations 117 are shaped. Between the fluid channels 107-1 and 107-2 are each hollow channels 130 arranged, which are not flowed through by fluid and no indentations 117 exhibit.

The indentations 117 are in particular parallel to one another and at a constant distance 131 arranged to each other.

In the in 4 illustrated embodiment, the indentations extend 117 in particular at an angle to itself along the direction of fluid flow 113 of the respective fluid hollow channel 107 extending longitudinal axis 137 of the fluid hollow channel 107 , The angle 141 extends between the longitudinal axis 137 of the fluid hollow channel 107 and a direction of extension 139 of the indentation 117 , The angle 141 is in particular between 100 ° and 170 °. Due to the angular extension of the indentations 117 a particularly turbulent fluid flow can be ensured without excessively creating the flow resistance of the fluid.

5 shows a battery holder with fluid hollow channels with indentations in one embodiment. The in the 5 illustrated embodiment corresponds to that in 4 illustrated embodiment except that the indentations 117 which in the profile inner walls 115 the first fluid hollow channels 107 are formed, at least in sections in the hollow channels 130 run into it. In particular, the indentations can also be the hollow channels 130 bridged.

6 shows a battery holder with tubular fluid collectors in one embodiment.

The battery holder 100 has a base plate 103 with hollow fluid channels 107 on, the fluid hollow channels 107 between two opposite faces 109 the bottom plate 103 extend and each through a profile inner wall 115 be limited, being in the profile inner walls 115 dents 117 are formed, which at least in sections counter to the fluid flow direction 113 extend to cause flow resistance and turbulent fluid flow.

For details, please refer to the comments regarding the 1 to 5 directed.

On the face 109 the bottom plate 103 is a tubular fluid collector 143 arranged, which with the fluid hollow channels 107 is fluidly connected, and which is formed, from the fluid hollow channels 107 absorb emerging fluid, or which is designed, in the fluid hollow channels 107 leading incoming fluid. The fluid collector 143 is with the bottom plate 103 in particular positively, non-positively and / or positively connected.

Here is on a first face 109-1 especially a first tubular fluid collector 143-1 and is on one of the first faces 109-1 opposite second end face 109-2 especially a second tubular fluid collector 143-2 arranged. Fluid becomes along the fluid flow direction 113 in the first tubular fluid collector 143-1 introduced by the first fluid collector 141-1 directed from the first fluid collector 143-1 into the fluid hollow channels 107 introduced through the hollow fluid channels 107 guided, from the fluid channels 107 into the second fluid collector 143-2 executed by the second fluid collector 143-2 passed and then from the second fluid collector 143-2 executed.

7 shows a process 200 for making a battery holder 100 for holding a plurality of battery modules 133 in an electrically drivable vehicle, comprising the following process steps, extruding 201 of a metal to a floor slab 103 with a heat exchanger structure 105 for temperature control of the battery modules 133 , the heat exchanger structure 105 Fluid hollow channels 107 which is inside the base plate 103 are formed and designed to conduct fluid, the fluid hollow channels 107 one profile inner wall each 115 which have the respective fluid hollow channel 107 limit, and shapes 203 of indentations 117 in the profile inner walls 115 , the indentations 117 at least in sections against the direction of fluid flow 113 of the respective fluid hollow channel 107 extend to cause flow resistance and turbulent fluid flow.

LIST OF REFERENCE NUMBERS

100

battery holder

101

battery carrier

103

baseplate

105

heat exchanger structure

107

Fluid hollow channel

107-1

First fluid hollow channel

107-2

Second hollow fluid channel

109

Face of the base plate

109-1

First face

109-2

Second face

111

Fluid hollow channel opening

113

Fluid flow direction

115

Profilinnenwandung

117

denting

117-1

First dent

117-2

Second dent

119

channel partitions

121

Plate upper side

123

Plate underside

125

Profilinnenwandungsunterseite

127

Profilinnenwandungsoberseite

129

edge

131

Distance between indentations

133

battery module

135

Heat transfer element

137

longitudinal axis

139

Direction of extension of the indentations

141

angle

143

Tubular fluid collector

143-1

First tubular fluid collector

143-2

Second tubular fluid collector

200

Method of making a battery holder

201

First process step: extruding a metal into a base plate

203

Second step: forming indentations

QUOTES INCLUDE IN THE DESCRIPTION

This list of documents listed by the applicant has been generated automatically and is only included 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.

Patent literature cited

• DE 102012100977 B3 [0003]

Claims (19)

Battery holder (100) for accommodating a plurality of battery modules (133) in an electrically drivable vehicle, with: a battery carrier (101) with a bottom plate (103) for receiving the plurality of battery modules (133); and a heat exchanger structure (105) for the temperature control of the battery modules (133), which is formed in the base plate (103), the heat exchanger structure (105) having hollow fluid channels (107, 107-1, 107-2) which are inside the base plate (103 ) are formed and designed to conduct fluid, the fluid hollow channels (107, 107-1, 107-2) each having a profile inner wall (115) which delimits the respective fluid hollow channel (107, 107-1, 107-2), wherein indentations (117, 117-1, 117-2) are formed in the profile inner walls (115) and extend at least in sections counter to the direction of fluid flow (113) of the respective fluid hollow channel (107, 107-1, 107-2) by one to cause turbulent fluid flow. Battery holder (100) after Claim 1 , the base plate (103) having a plate top (121) facing the battery modules (133) and a plate underside (123) facing away from the plate top (121), the fluid hollow channels (107, 107-1, 107-2) inside the base plate ( 103) are formed between the top side of the plate (121) and the bottom side of the plate (123), and the fluid hollow channels (107, 107-1, 107-2) are thermally coupled to the top side of the plate (121) and / or to the top side of the plate (121) , Battery holder (100) after Claim 2 , wherein the profile inner walls (115) each have a profile inner wall top (127) facing the plate top (121) and a profile inner wall bottom (125) facing the plate underside (123) respectively, the indentations (117, 117-1, 117-2) in the Profile inner wall top (127) and / or in the profile inner wall bottom (125) are formed. Battery holder (100) after Claim 3 , wherein first indentations (117-1) are formed in the profile inner wall upper side (127), and wherein second indentations (117-2) are formed in the profile inner wall lower side (125), the first and second indentations (117-1, 117-2 ) in the fluid flow direction (113) are offset from one another or not offset from one another. Battery holder (100) according to any one of the preceding claims, wherein the indentations (117, 117-1, 117-2) comprise increases in the profile inner walls (115) which reduce the inner diameter of the respective fluid hollow channel (107, 107-1, 107-2) , and / or wherein the indentations (117, 117-1, 117-2) comprise depressions of the profile inner walls (115) which enlarge the inner diameter of the respective fluid hollow channel (107, 107-1, 107-2). Battery holder (100) according to any one of the preceding claims, wherein the indentations (117, 117-1, 117-2) each have an edge (129) and / or a rounded side, which at least in sections counter to the fluid flow direction (113) of the respective Fluid hollow channel (107, 107-1, 107-2) extends. Battery holder (100) according to any one of the preceding claims, wherein the indentations (117, 117-1, 117-2) are formed parallel to each other in the profile inner walls (115), and / or wherein the indentations (117, 117-1, 117- 2) are arranged at a constant distance (131) from one another. Battery holder (100) according to one of the preceding claims, wherein the indentations (117, 117-1, 117-2) each angular to a longitudinal axis (137) of the respective fluid hollow channel (107, 107-1) extending along the fluid flow direction (113) , 107-2) extend by an angle (141) between the longitudinal axis (137) of the respective fluid hollow channel (107, 107-1, 107-2) and an extension direction (139) of the respective indentation (117, 117-1, 117 -2) to form, and wherein the angle (141) is in particular between 100 ° and 170 °. Battery holder (100) according to one of the preceding claims, wherein the fluid hollow channels (107, 107-1, 107-2) comprise first fluid hollow channels (107-1) and second fluid hollow channels (107-2), wherein between a first fluid hollow channel (107-1 ) and a second fluid hollow channel (107-2) each have a hollow channel (130) through which fluid does not flow. Battery holder (100) after Claim 9 , wherein the indentations (117, 117-1, 117-2) formed in the profile inner walls (115) of the first fluid hollow channels (107-1) and second fluid hollow channels (107-2) run into the hollow channels (130) or the hollow channels ( 130) bridge. Battery holder (100) according to one of the preceding claims, wherein the base plate (103) has a base plate height, and wherein the indentations (117, 117-1, 117-2) have an indentation height which is less than the base plate height, the indentation height in particular is between 5% and 30% of the floor slab height. Battery holder (100) according to any one of the preceding claims, wherein the fluid hollow channels (107, 107-1, 107-2) have a fluid hollow channel width, and wherein the indentations (117, 117-1, 117-2) have an indentation width which is equal to or less than the fluid hollow channel width, the indentation width in particular between 30% and is 100% of the fluid hollow channel width. Battery holder (100) according to one of the preceding claims, wherein the fluid hollow channels (107, 107-1, 107-2) are each fluidically separated from one another by channel partition walls (119), with no indentations (117, 117-) in particular in the channel partition walls (119). 1, 117-2) are formed. Battery holder (100) according to one of the preceding claims, wherein the battery holder (100) has a heat transfer element (135), in particular a heat-conducting film, the heat transfer element (135) being arranged between the base plate (103) and the battery modules (133), and wherein the heat transfer element (135) is arranged in particular between a plate top (121) facing the battery modules (133) and the battery modules (133). Battery holder (100) according to one of the preceding claims, wherein the battery holder (100) has a plurality of battery carriers (101) which are fluidly connected to one another, the battery carriers (101) in particular non-positively, positively and / or integrally connected to one another. Battery holder (100) according to one of the preceding claims, wherein the battery holder (100) has a tubular fluid collector (143, 143-1, 143-2), which on one end face (109, 109-1, 109-2) of the base plate ( 103) is arranged, which is fluidically connected to the fluid hollow channels (107, 107-1, 107-2), and which is designed to receive fluid emerging from the fluid hollow channels (107, 107-1, 107-2) or into the fluid hollow channels ( 107, 107-1, 107-2) to guide incoming fluid, the tubular fluid collector (143, 143-1, 143-2) being connected to the base plate (103) in a positive, non-positive and / or integral manner. Method (200) for producing a battery holder (100) for accommodating a plurality of battery modules (133) in an electrically drivable vehicle, comprising the following method steps: Extruding (201) a metal to a base plate (103) with a heat exchanger structure (105) for the temperature control of the battery modules (133), the heat exchanger structure (105) having fluid hollow channels (107, 107-1, 107-2) which are located within the Bottom plate (103) is formed and designed to conduct fluid, the fluid hollow channels (107, 107-1, 107-2) each having a profile inner wall (115) which defines the respective fluid hollow channel (107, 107-1, 107-2) limit; and Forming (203) indentations (117, 117-1, 117-2) in the profile inner walls (115), the indentations (117, 117-1, 117-2) at least in sections countering the fluid flow direction (113) of the respective fluid hollow channel (107, 107-1, 107-2) to cause flow resistance and turbulent fluid flow. Method (200) according to Claim 17 , wherein the indentations (117, 117-1, 117-2) are formed (203) by rolling processing at least along the hollow fluid channels (107, 107-1, 107-2), and the base plate (103) thus shaped is then active is cooled. Method (200) according to Claim 17 , wherein the shaping (203) of indentations (117, 117-1, 117-2) is achieved by pressing a pressing tool onto the base plate (103).

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