Temperature-adjustable battery shell and manufacturing method thereof

Abstract

The invention relates to a battery housing (1) for a vehicle drive battery (2), comprising a housing wall (3), which has a plastic material. The battery housing (1) comprises at least one fluid line (4) for a temperature control medium. The fluid line (4) is at least partially buried in the housing wall (3).

Description

Technical Field

[0001] The present invention relates to a battery housing for a vehicle drive battery, comprising a housing wall comprising plastic, the battery housing including at least one fluid line for a temperature control medium. Furthermore, the present invention relates to a drive battery comprising the battery housing, and to uses of the battery housing or the drive battery. Finally, the present invention relates to a method for manufacturing the battery housing. Background Art

[0002] The temperature control function of the drive battery or battery housing is crucial for electric vehicles because it ensures that the battery cells are always kept at the optimal temperature for the drive battery (approximately room temperature). This not only ensures optimal driving operation at all times of the year and under varying temperatures during driving, but also during the charging process. During charging, especially during very rapid charging, the drive battery becomes very hot. Only effective temperature management of the drive battery can achieve very rapid charging.

[0003] A battery housing having an upper housing shell and a lower housing shell is known in practice. These two housing shells house numerous battery cells, numerous electrical connections, and some electronic components. Furthermore, the battery housing includes a fluid line that snakes within an aluminum plate. The aluminum plate has two overlapping, abutting, and firmly connected aluminum sub-plates, at least one of which includes a meandering embossing. The embossing of the at least one sub-plate complements that of the other sub-plate, forming a meandering fluid line within the aluminum plate.

[0004] At least one, but typically several, aluminum plates, each with at least one fluid line, are bolted to the inside of the upper and / or lower housing shells and connected to supply lines, in particular plastic manifolds, using line connectors. For example, one manifold can serve as a supply line for three aluminum plates in the lower housing shell and another three aluminum plates in the upper housing shell. Another manifold can collect the fluid flow heated (or cooled) by the battery cells and feed it to a temperature control element, where the temperature control liquid is cooled (or heated) and the cycle can begin again. Summary of the Invention

[0005] However, the effort required to provide fluid lines within a drive battery is considerable. The object of the present invention is therefore to reduce this effort. This object is achieved by a battery housing for a vehicle drive battery, comprising a housing wall comprising plastic, the battery housing including at least one fluid line for a temperature control medium, characterized in that the fluid line is at least partially embedded in the housing wall.

[0006] The present invention is based on the recognition that providing aluminum sheets is complex, particularly with regard to fastening via screws. In particular, it has been found that adhesive fastening—particularly due to common temperature fluctuations—is insufficiently robust. Furthermore, the present invention is based on the recognition that, for example, snap-fit connections for fastening the aluminum sheets to the housing shell are also too complex. It has been found that, for example, fluid structures or fluid lines can be integrated into the housing wall or the wall itself by blow molding or thermoforming. The present invention is based on the recognition that the effort and cost can thus be significantly reduced.

[0007] Furthermore, it was discovered that embedding the fluid structure or fluid lines in the wall creates a strong connection that makes complex clamping, snap-on, or screw connections superfluous and even surpasses them in terms of durability. Furthermore, the invention is based on the realization that this wall allows for highly efficient temperature control. This was surprising, since aluminum sheets from the prior art are very good heat conductors.

[0008] However—and this is another realization of the present invention—the plastic material used for the housing wall, due to its wide variety of designs, has sufficient thermal conductivity to achieve efficient temperature control. In particular, the fluid lines can be located almost directly on the inner side of the housing wall, so that the battery cells are in direct or almost direct contact with the fluid lines. In addition, additives that increase thermal conductivity can be added to the fluid lines or the housing wall. In addition, an insulating layer on the outside of the fluid lines can ensure that the cold or heat of the fluid lines mainly penetrates inward. These many possibilities make it possible to reduce the workload or cost of manufacturing the battery housing without compromising the temperature control capability. Therefore, the objectives mentioned at the beginning are achieved by the battery housing of the present invention.

[0009] The term "drive battery" preferably refers to a battery used to drive an electric motor that can accelerate a vehicle. In particular, the term "drive battery" does not refer to a battery that only drives a smaller electric motor, such as a starter or a pump. The drive battery is preferably the energy source for the electric motor that accelerates an electric or hybrid vehicle.

[0010] The housing wall is a component of the battery housing. In addition to the housing wall, the battery housing may also have other elements that do not belong to the housing wall, such as connecting elements (such as screws) or sealing elements (such as sealing rings).

[0011] The term "embedded" preferably means that, in a cross-sectional area of the housing wall, at least 1 / 10, 1 / 8, 1 / 6, 1 / 4, 1 / 3, 1 / 2, or 2 / 3 of the dimension of the fluid line in the height direction or z-direction is surrounded by the housing wall material and preferably in contact with this material. Preferably, the housing wall material is connected to the fluid line in a form-fitting and / or materially bonded manner. Particularly preferably, the housing wall material is connected to the fluid line in a materially bonded manner, in particular by a thermal process.

[0012] The directions are advantageously represented using a Cartesian coordinate system. The x-direction preferably corresponds to the maximum dimension of the battery housing or the drive battery. The z-direction preferably corresponds to the minimum dimension of the battery housing. The direction perpendicular to the z- and x-directions is the y-direction. In this embodiment, the z-direction corresponds to the height of the drive battery installed in the vehicle. The x-direction advantageously corresponds to the direction along the vehicle or the direction of travel.

[0013] The arrangement of the battery cells within the battery housing determines the directional or positional information "inside" and "outside." For example, if one layer of the housing wall is closer to the battery cells than another layer, then the first layer is arranged inside the other layer. The terms "inside" and "outside" preferably refer to the entire battery housing, not just to a portion of a wall.

[0014] According to a particularly preferred embodiment, the housing wall comprises an outer layer and an inner layer. The fluid line is preferably at least partially, preferably completely, embedded in the inner layer in the z-direction (on at least one surface area). The fluid line is advantageously embedded only in the inner layer. An adhesive may be present between the fluid line and the outer layer. Preferably, there is a form-locking connection between the inner layer and the fluid line. Particularly preferably, there is a material lock between the inner layer and the fluid line. Preferably, the inner layer surrounds at least 1 mm, 2 mm, 4 mm, 6 mm, 8 mm, 10 mm, 12 mm, or 14 mm of the outer section of the fluid line. Particularly preferably, the inner side of the housing wall is configured to be in planar contact with the battery cell. This allows the fluid line to be particularly close to the battery cell, thereby achieving good heat exchange. Another advantageous effect is that the fluid line is surrounded by the outer layer, thereby ensuring corresponding stability of the battery housing. This also results in the fluid line being sealed by material on the inner side of the housing wall, thereby achieving a particularly reliable or stable arrangement of the fluid line.

[0015] Particularly preferably, the fluid lines and / or the outer layer and / or the inner layer comprise plastic. This results in particularly low production costs with particularly low energy costs. Furthermore, the plastic material allows for considerable design freedom. Particularly preferably, the plastic is a thermoplastic. Preferably, the plastic of the housing wall or the inner layer or the fluid lines contains an additive for increasing the thermal conductivity of the plastic of the inner layer or the fluid lines. This additive preferably comprises carbon black. The thickness of the inner layer is advantageously at least 1 mm, 1.5 mm, 2 mm, 3 mm, 4 mm, 6 mm, 8 mm, 10 mm, 12 mm, or 14 mm. Preferably, the thickness of the outer layer is at least 2 mm, 3 mm, 4 mm, 6 mm, 8 mm, 10 mm, 12 mm, or 14 mm.

[0016] According to a particularly preferred embodiment, the battery housing or housing wall comprises at least two walls, in particular two housing shells. The battery housing or housing wall advantageously comprises a lower wall and an upper wall. The lower wall advantageously comprises side walls. The upper wall may have side walls. The upper wall advantageously comprises a top. Preferably, the lower wall has a bottom. Preferably, the connecting element or the connecting element is connected to the side walls of the lower wall and / or to the side walls of the upper wall. Preferably, the housing wall comprises only two walls, so that the battery cell can be completely enclosed after the lower wall and the upper wall are connected. The upper wall may not comprise side walls or may comprise only a top. Advantageously, the upper and lower walls are already or can be reversibly connected to each other. The battery housing advantageously comprises a seal. Advantageously, the seal comprises a sealing ring. The seal or sealing ring is preferably arranged between the lower and upper walls. Preferably, the seal is designed to extend at least partially, and advantageously completely, along one / the side walls of the lower wall. The sealing ring advantageously comprises an elastomer. The sealing element can have a sealing groove in the upper wall and / or the lower wall, into which the sealing ring is expediently engaged.

[0017] According to a very preferred embodiment, the fluid line includes at least one bend. The at least one bend of the fluid line is preferably at least partially, preferably completely, embedded in the housing wall or the inner layer. Preferably, the fluid line has multiple bends. Particularly preferably, the fluid line extends at least partially in a meandering manner. Preferably, the fluid line includes at least one, preferably multiple, straight sections. Advantageously, the at least one straight section of the fluid line is at least partially, preferably completely, embedded in the housing wall or the inner layer. The outer diameter of the fluid line is advantageously a maximum of 40 mm, 30 mm, or 25 mm. The outer diameter of the fluid line is preferably at least 8 mm, 10 mm, or 12 mm. Preferably, the inner diameter of the fluid line is at least 6 mm, 8 mm, or 10 mm. The inner diameter is advantageously a maximum of 35 mm, 25 mm, or 20 mm.

[0018] Preferably, the first end and / or second end of the fluid line protrudes inwardly from the housing wall. The battery housing preferably includes a first connecting pipe. Preferably, the first connecting pipe connects the first end of the fluid line to one / the first fluid connection of the battery housing. Advantageously, the battery housing includes a second connecting pipe. The second connecting pipe suitably connects the second end of the fluid line to one / the second fluid connection of the battery housing.

[0019] Particularly preferably, the battery housing or the housing wall comprises at least one first fluid interface and preferably a second fluid interface. The first and / or second fluid interface is preferably configured as a plug-in connector, in particular as a plug or a socket. Further preferably, the first fluid interface and / or the second fluid interface is configured to establish a fluid connection and mechanical locking with the connecting pipe and / or a pipeline outside the battery housing by only one plug-in process. The first fluid interface and / or the second fluid interface is suitably a component of a quick connector. The first fluid interface and / or the second fluid interface preferably protrudes outward from the housing wall. The first fluid interface is advantageously connected to a first opening in the housing wall, in particular in a material-locked manner, and is preferably embedded in the first opening. The second fluid interface is advantageously connected to a second opening in the housing wall, in particular in a material-locked manner, and is preferably embedded in the second opening.

[0020] Particularly preferably, a first connecting pipe connects a first end of the fluid line to the first fluid connection. A second connecting pipe expediently connects a second end of the fluid line to the second fluid connection. The first fluid connection and / or the second fluid connection advantageously include an external connector extending outwardly relative to the housing wall and / or an internal connector extending inwardly relative to the housing wall.

[0021] According to a preferred embodiment, the material of the housing wall or the inner and / or outer layers comprises fibers. The fibers preferably comprise glass fibers. Preferably, the fiber content of the inner and / or outer layer material is at least 5%, 10%, 15%, or 20% by weight. The inner and / or outer layer material advantageously comprises a flame retardant. Advantageously, the flame retardant meets at least UL 94 Class V2. The material of the first and / or second layer advantageously comprises a polyolefin, particularly polypropylene.

[0022] The drive battery preferably comprises the battery housing and the battery cell according to the present invention. The drive battery advantageously comprises at least one electrical or electronic component. The at least one electrical or electronic component may be a control device, a sensor, or an electrical connection.

[0023] The object stated at the outset is achieved by the use of a battery housing according to the invention for a drive battery or by the use of a drive battery according to the invention in an electric vehicle or a hybrid vehicle.

[0024] The objects mentioned at the outset are achieved by a method for producing a battery housing and in particular a battery housing according to the invention, wherein a fluid line is placed in a mold for forming a part or a housing wall or a wall body of the battery housing, and then the material of the housing wall or the wall body is introduced into the mold in order to embed the fluid line in the housing wall or the wall body.

[0025] The method for producing the battery housing preferably comprises a blow molding process and / or a thermoforming process. Preferably, the housing wall or one / the outer layer and / or the inner layer of the wall body is produced by blow molding or by thermoforming.

[0026] The fluid lines are then advantageously introduced into the mold or the housing wall or wall body, or arranged on the inner side of the outer layer. Particularly preferably, the wall body comprises a bottom or a top and side walls. Preferably, after the fluid lines have been placed or arranged on the inner side of the outer layer of the wall body or housing wall, the inner layer(s) are / are applied to the inner side of the outer layer by blow molding or thermoforming. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Two embodiments of the present invention are described below with the aid of a number of drawings. The drawings schematically show:

[0028] Figure 1 is an exploded view of a driving battery having a battery housing according to the present invention;

[0029] Figure 2 It is a partial top view of the bottom of the lower wall of the battery housing;

[0030] Figure 3 yes Figure 2 a cross section of the portion shown;

[0031] Figures 4A to 4F is a sequence of method steps of the first method example; and

[0032] Figures 5A to 5F is a sequence of method steps of the second method example. DETAILED DESCRIPTION

[0033] Figure 1 Figure 2 shows a drive battery 2 for an electric vehicle. The drive battery 2 preferably provides electrical energy for driving an electric motor that accelerates the electric vehicle. The drive battery 2 preferably includes a battery housing 1 and a plurality of battery cells 9. Furthermore, a plurality of electrical or electronic components 11 may be arranged within the battery housing 1. In addition to the electrical connections for the battery cells 9, the electrical or electronic components may also include, for example, an electronic control unit and sensors.

[0034] according to Figure 1 The directions are advantageously represented by a Cartesian coordinate system. The x-direction preferably corresponds to the direction of the largest dimension of the battery housing 1 or the drive battery 2. The z-direction preferably corresponds to the direction of the smallest dimension of the battery housing 1. The direction perpendicular to the z- and x-directions is the y-direction. In this embodiment, the z-direction corresponds to the height of the drive battery installed in the vehicle. The x-direction advantageously corresponds to the longitudinal direction of the vehicle, or the direction of travel.

[0035] according to Figure 1The battery housing 1 comprises a housing wall 3 and, preferably, a plurality of connecting elements 12. The connecting elements 12 are preferably screws. The battery housing 1 or the housing wall 3 preferably comprises two walls 7, 8. Preferably, the battery housing 1 or the housing wall 3 is divided into two walls 7, 8 along the z-direction. Preferably, one of the two walls 7, 8 is the lower wall 7. The other of the two walls 7, 8 is advantageously the upper wall 8. The walls 7, 8 are advantageously already or can be connected to one another via the connecting elements 12. The connecting elements 12 preferably comprise screws.

[0036] The battery housing 1 suitably includes a seal, see Figure 1 The seal advantageously comprises a sealing ring 10, which is preferably arranged between the lower wall 7 and the upper wall 8. Preferably, the lower wall 7 and / or the upper wall 8 or the seal comprises a sealing groove, into which the sealing ring 10 can be or is already embedded.

[0037] Preferably, the lower wall 7 and / or the upper wall 8 are arranged according to Figure 1 The lower wall 7 advantageously has an at least partially surrounding side wall 15. Preferably, the lower wall 7 has a bottom 16. The upper wall 8 advantageously comprises an at least partially surrounding side wall 13. Preferably, the lower wall 7 has a bottom 16, or the upper wall 8 has a top 14. The upper wall 8 advantageously forms a cover for the lower wall 7. The battery cells 9 are advantageously arranged between the lower wall 7 and the upper wall 8. For the sake of clarity, Figure 1 The temperature control elements of the battery housing 1 or the drive battery 2 and in particular the fluid line 4 are omitted (see in particular Figure 2 and 3 ).

[0038] Figure 2 The middle figure shows a partial top view of the bottom 16 of the lower wall 7. Figure 2 The side wall 15 of the lower wall 7 is not shown. In this embodiment, the fluid conduit 4 is embedded in the bottom 16 of the lower wall 7 and is preferably not easily visible to the naked eye. Figure 2 The fluid line 4 is preferably designed as a meander or as a temperature control coil.

[0039] The upper wall 8 advantageously comprises a fluid conduit (not shown here), which is preferably formed in a meandering manner. Preferably, the fluid conduit of the upper wall 8 is embedded in the top 14 of the upper wall 8 .

[0040] Along Figure 2 The local dashed lines shown in Figure 37. Preferably, the housing wall 3 or the lower wall 7 and / or the upper wall 8 comprises an outer layer 5 and an inner layer 6. Preferably, the fluid line 4 is at least partially, preferably completely, embedded in the inner layer 6 of the lower wall 7 and / or the upper wall 8.

[0041] An interface 17 is advantageously provided between the outer layer 5 and the inner layer 6 of the lower wall 7 or upper wall 8. The interface 17 of the lower wall 7 or upper wall 8 is preferably an interface at which the outer layer 5 and the inner layer 6 are materially bonded. In this embodiment, the material bond is preferably achieved by applying at least one of the two layers, particularly the inner layer 6, to the other layer, particularly the outer layer 5, while heated.

[0042] In this embodiment, the fluid line 4 of the lower wall 7 and / or upper wall 8 has an outer diameter of 18 mm and an inner diameter of 16 mm. The fluid line 4 of the lower wall 7 and / or upper wall 8 preferably comprises a plastic, in particular a thermoplastic. The fluid line 4 is advantageously manufactured by extrusion. The fluid line 4 preferably comprises polypropylene.

[0043] Preferably, the outer layer 5 and / or the inner layer 6 of the lower wall 7 and / or upper wall 8 are made of polypropylene. Preferably, the outer layer 5 and / or the inner layer 6 of the lower wall 7 and / or upper wall 8 contain a reinforcing material, more preferably fibers, and particularly preferably glass fibers. The reinforcing material content in the outer layer 5 or the inner layer 6 is advantageously at least 25%. Preferably, the outer layer 5 and / or the inner layer 6 contain a flame retardant.

[0044] exist Figures 4A to 4F , a sequence of method steps is shown for an exemplary first method for producing a battery housing 1 or housing wall 3 or lower wall 7 or upper wall 8. Particularly preferably, the production method of the first exemplary embodiment is a blow molding process.

[0045] According to the first embodiment or Figure 4A The manufacturing apparatus 18 for manufacturing a battery casing includes a first mold 19a and a second mold 19b, which are preferably movable relative to each other and preferably move toward each other. The direction of movement is advantageously horizontal. The first mold 19a and the second mold 19b suitably define a variable cavity 25 therebetween.

[0046] Preferably, the first blank 21a is introduced into the mold cavity 25 (suitably by a blank feeding device 20). Preferably, the manufacturing device 18 includes a robot 22. The robot 22 is suitably configured to move the blank feeding device 20 so that the first blank 21a is introduced into the mold cavity 25. The blank feeding device 20 is advantageously arranged on the robot 22 or on one end of the robot 22. Preferably, the manufacturing device 18 includes a blowing device 24. The blowing device 24 is advantageously configured so that pressurized gas, in particular compressed air, can enter the first blank 21a and can inflate the (suitably heated) first blank 21a.

[0047] exist Figure 4B In the embodiment, molds 19a and 19b are relative to each other. Figure 4A A gathering movement is performed, closing the mold cavity 25. The first blank 21a is then advantageously blown until it assumes the contours of the mold cavity 25 or the inner side of the closed first and second molds 19a, 19b. Preferably, once the first blank 21a has at least partially solidified due to cooling, the separating device 23 is moved through the bulged and solidified first blank 21a. The separating device 23 advantageously moves between the molds 19a, 19b. This preferably results in two base bodies or shells, each with an outer layer 5.

[0048] Then according to Figure 4C , preferably, the molds 19a and 19b are separated from each other to expand the cavity 25. Then, preferably, according to Figure 4D and 4E At least one fluid line 4 (preferably one fluid line 4 for each base body / shell / mold or outer layer 5) is introduced into the mold cavity 25. Advantageously, the at least one fluid line 4 is inserted into the mold cavity 25 with the aid of a / the robot 22. The at least one fluid line 4 is suitably placed on the inner side of the outer layer 5. Particularly preferably, one fluid line 4 is placed on the respective inner side of each of the two layers 5 or shells / base bodies. The placement of the fluid line 4 can be assisted by adhesion. An adhesive can be present between the fluid line 4 and the shell or outer layer 5. For this purpose, the robot can dip the fluid line 4 into the adhesive before the fluid line is inserted into the mold cavity 25.

[0049] Preferably, the manufacturing device 18 or one / the robot 22 loads the second blank 21b into the mold cavity 25 through one / the blank feeding device 20, see Figure 4E The two molds 19a and 19b are then suitably moved together in order to close the mold cavity 25.

[0050] Advantageously, the blowing device 24 then blows pressurized gas into the second blank 21b, so that the (suitably heated) second blank 21b expands. Figure 4F Particularly preferably, the second blank 21b embeds the at least one fluid line 4 or the two fluid lines 4 therein. Preferably, after solidification of the second blank 21b, an inner layer 6 is formed from the second blank 21b, in which one or more fluid lines 4 are embedded.

[0051] Next, the separation device 23 in this first embodiment is preferably arranged along a path preferably similar to Figure 4B The solidified base bodies 5 and 6 (not shown here) are cut in a cutting direction. As a result, two walls 7 and 8 are produced. After the separation process by the separation device 23, a lower wall 7 and an upper wall 8 can be produced. After the separation process by the separation device 23, two lower walls 7 or two upper walls 8 can be produced.

[0052] exist Figures 5A to 5F , a second embodiment for producing a battery housing 1 or housing wall 3 is shown. The production device 18 is preferably configured as a thermoforming device and includes a first mold 19a and preferably a second mold 19b. However, in this embodiment, the second mold 19b is not used to form the product to be produced, as will be explained below.

[0053] The manufacturing apparatus 18 of the second embodiment preferably includes a separating device 23 movable in the height direction. The manufacturing apparatus 18 of the second embodiment preferably includes a robot 22. The robot 22 is preferably configured to load the first blank 21a into the cavity 25 between the first mold 19a and the second mold 19b. Unlike the first embodiment, the first blank 21a of the second embodiment is preferably configured as a rigid plate rather than a hollow or curved preform.

[0054] After the first blank 21a is placed in the mold cavity 25, the first mold 19a and the second mold 19b are preferably moved together to close the mold cavity 25. The first mold 19a and the second mold 19b can be moved together in the height direction. The first mold 19a can be positioned below the second mold 19b. The first blank 21a is preferably clamped between the first mold 19a and the second mold 19b. The separating device 23 is then advantageously operated to shear the edges of the first blank 21a.

[0055] Preferably, the manufacturing device 18 or the second mold 19b has a blowing device 24. The blowing device 24 preferably comprises a nozzle that blows pressurized gas into the mold cavity 25. Thus, a pressure is generated in the upper region of the mold cavity 25. Advantageously, heat is applied to the mold cavity 25 or the first blank 21a. Preferably, the application of heat and gas pressure to the first blank 21a causes the first blank 21a to take on the contour of the first mold 19a, as shown in FIG. Figure 5CPreferably, the shaped first blank 21 a corresponds to the outer layer 5 of the wall 7 , 8 .

[0056] Then, the molds 19a, 19b are preferably separated from each other, thereby opening the mold cavity 25. Figure 5D Then, one / the robot 22 suitably introduces the fluid line 4 into the cavity 25 so that the fluid line 4 abuts against the inner side of the outer layer 5, as in Figure 5D As shown in .

[0057] Then, one / the robot 22 advantageously introduces the second blank 21b into the cavity 25, see Figure 5E The second blank 21b is preferably designed as a rigid plate. The first blank 21a and / or the second blank 21b can be adapted to the dimensions of the first mold 19a, so that no separating device is required on the mold 19a.

[0058] Then, the molds 19a and 19b are suitably brought together until the cavity 25 is closed. Then, heat is advantageously applied to the second blank 21b. A pressure is suitably applied to the second blank 21b by means of a blower 24 using pressurized gas, such as in Figure 5F As a result, the second blank 21b takes on the shape determined by the first mold 19a or the outer layer 5 or the fluid conduit 4. After solidification, a wall, in particular a lower wall 7 or an upper wall 8, is formed.

[0059] Reference Signs List

[0060] 1 Battery housing

[0061] 2 driving batteries

[0062] 3 Shell wall

[0063] 4 Fluid lines

[0064] 5 Outer layer

[0065] 6 Inner layer

[0066] 7 lower wall body

[0067] 8 upper wall body

[0068] 9 battery cells

[0069] 10 Sealing ring

[0070] 11 Electrical or electronic components

[0071] 12 Connecting elements

[0072] 13 8 side wall

[0073] 14 8 top

[0074] 15 7 side wall

[0075] 16 7 bottom

[0076] 17 Interface

[0077] 18 Manufacturing Equipment

[0078] 19a First mold

[0079] 19b Second mold

[0080] 20 Billet feeding device

[0081] 21a First blank

[0082] 21b Second blank

[0083] 22 Robot

[0084] 23 Separation device

[0085] 24 Air blowing device

[0086] 25 cavity

Claims

1. A battery housing (1) for a vehicle drive battery (2), comprising a housing wall (3) made of plastic, the battery housing (1) comprising at least one fluid line (4) for a temperature control medium, characterized in that: The fluid line (4) is at least partially embedded in the housing wall (3).

2. The battery housing (1) according to claim 1, wherein the housing wall (3) comprises an outer layer (5) and an inner layer (6), wherein the fluid line (4) is preferably embedded in the inner layer (6), further preferably embedded only in the inner layer (6).

3. The battery housing (1) according to claim 1 or 2, wherein the fluid line (4) and / or the outer layer (5) and / or the inner layer (6) comprise plastic.

4. The battery housing (1) according to any one of claims 1 to 3, wherein the battery housing (1) or the housing wall (3) comprises at least two walls (7, 8), in particular two housing shells, preferably a lower wall (7) and an upper wall (8). 5 . The battery housing ( 1 ) according to claim 1 , wherein the fluid line ( 4 ) has at least one bend and preferably runs in a meandering manner at least in regions. 6 . The battery housing ( 1 ) according to claim 1 , wherein the battery housing ( 1 ) or the housing wall ( 3 ) has at least one fluid connection.

7. The battery housing (1) according to claim 1, wherein the material of the housing wall (3) or the inner layer (6) and / or the outer layer (5) contains fibers, in particular glass fibers.

8. A drive battery (2) comprising a battery housing (1) according to any one of claims 1 to 7, wherein the drive battery (2) comprises battery cells (9).

9. Use of the battery housing (1) according to any one of claims 1 to 7 for a drive battery (2), or use of the drive battery (2) according to claim 8 in an electric vehicle or a hybrid vehicle.

10. A method for manufacturing a battery housing (1), in particular a battery housing (1) according to any one of claims 1 to 7, wherein a fluid line (4) is placed in a mold (19a, 19b) for forming a part of the battery housing (1) or a housing wall (3) or a wall body (7, 8), and then the material of the housing wall (3) or the wall body (7, 8) is introduced into the mold (19a, 19b) to embed the fluid line (4) in the housing wall (3) or the wall body (7, 8).

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