MODULE HOUSING, METHOD FOR MANUFACTURING A MODULE HOUSING AND BATTERY MODULE

Description

Technical area

[0001] The present invention relates to a module housing made of an electrically insulating plastic material, a method for producing such a module housing and a battery module with such a module housing. State of the art

[0002] The present invention will be described below primarily in connection with traction batteries for vehicles. However, the invention can be used for any application in which battery modules are to be assembled from individual round cells.

[0003] To achieve the desired electrical voltage of the battery module, a large number of round cells can be connected in series. To achieve the desired electrical capacity of the battery module, several round cells connected in parallel can be connected in series.

[0004] To connect two round cells in series, they can be aligned axially. The positive terminal of the first round cell is always connected to the negative terminal of the second round cell. Generally, the positive terminals are located centrally on the end faces of the round cells, while the cell cups of the round cells form the negative terminals. Therefore, the cell cups of the axially aligned round cells must not touch each other to prevent a short circuit in the first round cell.

[0005] To prevent the cell cup of the second round cell from coming into contact with the cell cup of the first round cell, an insulating disc can be placed between the round cells. The insulating disc can have a hole for the positive terminal of the first round cell. The insulating disc can, for example, be glued to at least one of the two round cells.

[0006] The document DE 10 2014 002 165 B3 discloses a cell block comprising a first cell carrier and a second cell carrier, which sandwich the cells from opposite sides. For this purpose, the cells are inserted into openings in the first cell carrier from one side and into openings in the second cell carrier from the opposite side.

[0007] Document CN 106252549 A discloses a lightweight, safe battery cell carrier and a power battery pack. According to the lightweight, safe battery cell carrier, a carrier main body is a non-combustible foamed block made of a macromolecule resin, a blowing agent, glass fiber, and stone powder by chemical foaming. Air holes in the non-combustible foamed block are formed after foaming (see the abstract of document D2). Recesses are arranged in the battery cell carrier, in which battery cells are arranged.

[0008] The publication DE 10 2018 009 445 A1 describes a module in which cells are housed and held in a cell matrix by an upper and lower support frame. The lower and upper sides of the support frames are closed off by metal covers, with the lower metal cover serving as a heat-conducting plate for dissipating waste heat via air or water cooling. The metal covers do not have a load-bearing function; this is ensured solely by the support frames.

[0009] Publication WO 2020 / 094218 A1 discloses a cell connector for electrically connecting round cells of a battery for a motor vehicle, comprising a plurality of electrically conductive contact elements for connecting two round cells in series on the end face. The round cells are arranged in respective through-openings of a respective module housing, and in each module housing, the respective cell caps of the round cells are integrally connected to at least one of the cell connectors. Description of the invention

[0010] An object of the invention is therefore to provide an improved module housing, an improved method for producing such a module housing and an improved battery module with such a module housing using means that are as simple as possible in terms of construction.

[0011] The problem is solved by the subject matter of the independent claims. Advantageous developments of the invention are specified in the dependent claims, the description, and the accompanying figures. In particular, the independent claims of one claim category can also be developed analogously to the dependent claims of another claim category.

[0012] The approach presented here allows parallel-arranged round cells to be kept defined in all spatial directions. Additionally, the cell cups used as negative poles of series-connected round cells can be electrically insulated from each other to prevent short circuits. This eliminates the need for a separate insulator.

[0013] A module housing made of an electrically insulating plastic material with a foam body made of an electrically insulating foam material is proposed, wherein the foam body has substantially cylindrical receptacles for round cells, wherein the module housing has axial stops for cell cups of the round cells and recesses for positive poles of the round cells, aligned with the receptacles.

[0014] Furthermore, a battery module with at least one module housing according to the approach presented here is proposed, wherein one round cell is arranged in the foam body per receptacle, wherein cell cups of the round cells rest against an inner side of the stops and positive poles of the round cells are arranged in the recesses, wherein cell connectors rest on an outer side of the stops, which are electrically connected to the positive poles, wherein the cell connectors are electrically insulated from the cell cups by the stops. The receptacles for the round cells are essentially cylindrical, i.e., they are cylindrical receptacles, regardless of usual tolerances.

[0015] Furthermore, a method for producing such a module housing is proposed, wherein the module housing with the stops and recesses is made of an electrically insulating plastic material and the foam body with the receptacles is foamed from an electrically insulating foam material in a foaming tool.

[0016] A round cell can be a cylindrical battery cell. The round cell can have a cell cup that encloses a roll of several electrically active layers. The positive terminal of the round cell can be located in the center or core of the roll. The cell cup can form the negative terminal of the round cell.

[0017] A battery module can be a combination of many round cells in a housing. The battery module can have two connection terminals to which the round cells are electrically connected. The round cells can be electrically connected in series between the connection terminals, with at least one positive pole being connected to at least one negative pole of another round cell. The positive and negative poles can be connected to one another by cell connectors. Likewise, the round cells can be electrically connected in parallel, with the positive poles of at least two round cells being connected to one another and the negative poles of the round cells also being connected to one another. The positive poles and negative poles can be electrically connected to one another using cell connectors.

[0018] A module housing can be a supporting part of the battery module. The module housing can determine the orientation and position of the round cells within the battery module. Likewise, the module housing can determine the electrical interconnection of the round cells. The battery module can have several similar module housings. For example, round cells within a module housing can be connected in parallel in at least one group. The groups of several module housings can then be connected in series.

[0019] The module housing can insulate the cell cups of at least the series-connected round cells from each other. The stops have a dual function, serving as a stop surface for determining the position of the round cells. At the same time, the stops have a material thickness adapted to the voltage to be insulated, ensuring a distance between the negative poles of the series-connected round cells.

[0020] An electrically insulating plastic material can be an injection-moldable thermoplastic. The module housing can then be manufactured in an injection mold. The stops and recesses can be formed in the injection mold. Alternatively, the module housing can be manufactured in a deep-drawing tool. The stops and recesses can then be punched. A foam material can be a multi-component plastic. The foam material can expand in the foam tool and fill a mold cavity. The foam material is porous and can be open-pored or closed-pored.

[0021] The module housing can be arranged in the foaming tool with the stops first. The foam material can be metered into an interior space of the module housing. The module housing can be removed from the foaming tool after the foam material has reacted with the foam body. Foam cores of the foaming tool that form the receptacles can be pulled out of the receptacles through the recesses. Foam cores can act as placeholders for the receptacles. The foam material can foam up around the foam cores, thereby molding the foam cores. The foam cores can be inserted through the recesses when the module housing is arranged in the foaming tool. The foam cores can have a cross-sectional area equal to the recesses. The foaming tool can be closed with an essentially flat cover. The foam material can react essentially without pressure.The foam material can be kept away from the walls of the foaming tool by the outer walls or side walls of the module housing. The foam material can bond to the walls of the module housing.

[0022] The diameter of the recesses can be smaller than the diameter of the cell cups. The diameter of the recesses can be larger than the diameter of the positive terminal. The stop can be arranged in a ring around the recess and completely cover the cell cup.

[0023] Alternatively, the diameter of the recesses can be larger than the diameter of the cell cups. Several stops can protrude into each recess. The clear width between the stops can be smaller than the diameter of the cell cups. The clear width can be larger than the diameter of the positive terminal. The stops are not subjected to significant mechanical stress. Only a small contact surface is required to position the round cell.

[0024] The cell connectors can have crown-shaped contact springs on a side facing away from the round cells. A stop can be arranged between each contact spring and the cell cup. The stops can be located at specific points around the receptacle. Contact springs can be arranged around the positive terminal of the round cell. The contact springs can be designed to establish electrical contact with the cell cup of the next round cell in the series circuit. This positions the contact springs between the two round cells to be connected. The stops reliably prevent contact between the cell cup of the first round cell and the contact springs.

[0025] A diameter of the receptacles can be larger than the diameter of the cell cups. According to the invention, the

[0026] Each foam body has several compression ribs running axially along the receptacle. The clear width between the compression ribs can be smaller than the diameter of the cell cups. A compression rib can be a raised portion on a surface of the receptacle. The compression ribs can be distributed around the receptacle. In particular, the compression ribs can be aligned with the stops. The compression ribs can be formed by the foam cores.

[0027] The module housing can have through-holes for the round cells aligned with the receptacles. A stop and a through-hole can each be arranged on opposite sides of a receptacle. The diameter of the through-holes can be larger than the diameter of the cell cups. The through-holes can reinforce the foam body.

[0028] The module housing can have two identical housing halves. The foam body can be arranged between the housing halves. In each housing half, the stops and the through-openings can be arranged next to one another in rows. Rows of stops and through-openings can alternate. In the alternating rows, the round cells can be arranged in opposite directions. A round cell with its negative pole can protrude from each through-opening. A positive pole can be arranged in each recess. By alternating the rows, a series connection of the round cells in the different rows can be easily created. The round cells in one row can be connected in parallel.

[0029] The module housing can have at least one connecting contour arranged on one side of the housing for connecting to another module housing of the same design. The connecting contour allows multiple module housings to be arranged one behind the other, next to each other, or one above the other. The connecting contour engages with a corresponding, complementary connecting contour of another module housing. The connecting contour aligns the module housings with each other. This also aligns the round cells in the module housing. Short character description

[0030] An advantageous embodiment of the invention is explained below with reference to the accompanying figures. They show: Fig. 1 a representation of a module housing according to an embodiment; Fig. 2 a spatial representation of a battery module according to an embodiment; Fig. 3a sectional view of a detail of a battery module according to an embodiment; Fig. 4 a representation of a module housing according to an embodiment; Fig. 5 a representation of a battery module according to an embodiment; and Fig. 6 a spatial representation of a foaming tool with a module housing according to an embodiment.

[0031] The figures are merely schematic representations and serve only to illustrate the invention. Identical or equivalent elements are provided with the same reference numerals throughout. Detailed description

[0032] Fig. 1shows a representation of a module housing 100 according to an exemplary embodiment. The module housing 100 consists of an electrically insulating plastic material. The module housing 100 is an injection-molded part. A foam body 102 made of an electrically insulating foam material is arranged in the module housing 100. The foam body 102 has a plurality of receptacles 104 for round cells. The receptacles 104 are arranged as densely as possible. A receptacle 104 is a cylindrical recess extending from one side of the foam body 102 to an opposite side of the foam body 102 and having a diameter adapted to the size of the round cell. The receptacles 104 are therefore parallel holes aligned through the foam body 102 in a hexagonal packing.

[0033] The module housing 100 has stops 106 aligned with the receptacles 104. The stops 106 each have a recess 108. When a round cell is arranged in a receptacle 104, the round cell is pushed into the receptacle 104 with the positive pole first until a cell cup of the round cell rests against the stop 106 of the receptacle 104. The round cell cannot then be pushed any further. The receptacle 104 fixes the round cell in the radial direction. The stop 106 fixes the round cell in the axial direction. The positive pole is arranged within the recess 108 and can be contacted from the outside with a cell connector. The stop 106 covers the cell cup at least at the locations where the cell connector is arranged.

[0034] Here, the recesses 108 are circular and have a smaller diameter than the receptacles 104. The stops 106 are thus arranged in a circular ring around the recesses 108.

[0035] In a further embodiment, the round cell is inserted into the receptacle 104 with the negative pole first, with a corresponding adjustment of the electrical contact.

[0036] In one embodiment, the module housing 100 is divided into two parts, with only one of the housing halves 110 being shown here. The module housing 100 is designed to accommodate oppositely aligned round cells. For this purpose, the receptacles 104 are grouped into rows 112. The housing half 110 has stops 106 only in every other row 112. In the other rows 112, the stops 106 are arranged in the other housing half 110, not shown here. In the rows 112 without stops 106, the housing half 110 has through-openings 114. The through-openings 114 have a larger diameter than the round cells.

[0037] In one exemplary embodiment, the module housing 100 has a connecting contour 116 on at least one side for connecting to another module housing, in particular of a similar type. Here, different connecting contours are arranged on the upper and lower sides (shown in the illustration). The connecting contours 116 are complementary to one another.

[0038] Fig. 2 shows a spatial representation of a battery module 200 according to an embodiment. The battery module 200 has one of the Fig. 1corresponding module housing 100. Here, round cells 202 are arranged in the receptacles of the two-part module housing 100. The round cells 202 are inserted into the receptacles in opposite rows, so that in every other row 112, the cell cups 204 of the round cells 202 protrude from the receptacles as negative poles 206, and in the other rows, positive poles 208 of the round cells 202 are arranged in the recesses, and the cell cups 204 rest against the stops 106. The positive poles 208 of a row 112 are each electrically connected to one another by a cell connector 210. The stops 106 insulate the cell connector 210 from the cell cups 204. In the illustrated embodiment, the round cells 202 are 21700 cells with a nominal diameter of 21 millimeters and a nominal length of 700 millimeters. In a further embodiment, these may be other round cells.

[0039] When another battery module is placed on the illustrated battery module 200, the cell connectors 210 connected to the positive poles 208 contact the exposed negative poles 206 of the other battery module 100 and connect the round cells 202 of the respectively aligned rows 112 in an electrical series circuit.

[0040] Fig. 3 shows a sectional view of a detail of a battery module 200 according to an embodiment. The battery module 200 essentially corresponds to the battery module 200 in Fig. 2. This shows how the cell cup 204 of a round cell 202 rests against the stop 106 of the module housing 100 and the positive pole 208 is arranged in the recess 108. The cell connector 210 is electrically connected to the positive pole 208. For this purpose, the cell connector 210 has an embossing 300 in the area of ​​the positive pole 208, which, together with the projection of the positive pole 208 relative to the cell cup 204 or a cell jacket, bridges a material thickness of the stop 106. For example, the positive pole 208 and the embossing 300 are welded together. The stop 106 is arranged as an insulator between the cell cup 204 and the cell connector 210 and prevents a short circuit of the round cell 202. The stop 106 is dimensioned such that it provides the air gap and creepage distance required for the cell voltage between the cell connector 210 and the cell cup 204.

[0041] In one embodiment, the cell connector 210 has contact springs 302 on a side facing away from the battery module 200. The contact springs 302 are bent upwards from a main plane of the cell connector 210 and are designed to contact the cell cup of another round cell at the periphery. For this purpose, the contact springs 302 have insertion bevels 304 over which the cell cup slides when two battery modules 200 are joined together. The insertion bevels 304 elastically bend the contact springs 302 outward, thus exerting a radial contact force on the cell cup.

[0042] Fig. 4 shows a representation of a module housing 100 according to an embodiment. The module housing 100 has, like the module housing in Fig. 1Receptacles 104 for round cells are arranged in a hexagonal arrangement. The recesses 108 in the module housing 100 here have the diameter of the receptacles 104. Several stops 106 are distributed around the circumference of each recess 108. The stops 106 are approximately semicircular and protrude into the recess 108. A clear width 400 between the tips of the stops 106 is smaller than the diameter of the recess 108 or smaller than the diameter of the round cells.

[0043] The stops 106 are arranged relative to the recesses 108 as analog dials at 0:30, 1:30, 3:00, 4:30, 5:30, 6:30, 7:30, 9:00, 10:30, and 11:30. In a further embodiment, this may involve a different, particularly symmetrical, arrangement.

[0044] In one embodiment, the diameters of the receptacles 104 and thus the diameters of the recesses 108 are slightly larger than the diameters of the round cells. For this purpose, the foam body 102 has crush ribs 402 in extension of the stops 106, which run axially along the walls of the receptacles 104. A clear width 400 between the tips of the crush ribs 402 is smaller than the diameter of the round cells. The crush ribs 402 are at least partially elastically crushed when the round cells are inserted and thus hold the round cells securely in the radial direction. The crushing creates a contact pressure of the crush ribs 402 on the cell cup. The crush ribs 402 provide a volume that can be crushed during insertion. The volume of the crush ribs 402 is smaller than a volume to be displaced in a cylindrical recess with a corresponding clear width 400, in particular significantly smaller.Thanks to the crush ribs 402, the fixation of the round cells is less susceptible to tolerances than with a cylindrical recess alone. Even taking all specified tolerances into account, the crushable volume changes between a maximum crush and a minimum crush only by a ratio of 1.67:1. In another embodiment, this ratio may be different.

[0045] The module housing 100 has, like the module housing in Fig. 1 on two opposite sides complementary connecting contours 116 for connecting to a similar module housing.

[0046] Fig. 5 shows a representation of a battery module 200 according to an embodiment. The battery module 200 comprises the module housing 100 Fig. 4 The round cells 202 are, in contrast to the illustration in Fig. 2All are inserted into the receptacles from the same side and in the same orientation until they rest against the stops. This ensures that the positive terminals 208 and cell connectors 210 are all arranged on the same side of the battery module 200.

[0047] The cell connectors 210 have as in Fig. 3 Embossments 300 and contact springs 302. The cell connectors 210 have one embossment 300 and eight contact springs 302 per round cell 202. The contact springs 302 are arranged above the stops at 0:30, 1:30, 4:30, 5:30, 6:30, 7:30, 10:30, and 11:30. Connecting bars 500 are arranged between adjacent positive poles above the stops at 3:00 and 9:00. In particular, the contact springs 302 are arranged as precisely as possible above the stops.

[0048] Fig. 6 shows a spatial representation of a foaming tool 600 with a module housing 100 according to an embodiment. The module housing 100 essentially corresponds to the module housing 100 in Fig. 4. Here, no foam body is yet arranged in the module housing. The foam body is foamed using the foaming tool 600. Before foaming, the module housing 100 is injection-molded from an electrically insulating plastic material in an injection molding tool. The module housing 100 is then inserted into the foaming tool 600 with the recesses 108 and the stops 106 facing forward. A foam core 602 of the foaming tool 600 is inserted into the module housing 100 through each recess 108. Side walls 604 of the module housing 100 are supported by side walls of the foaming tool 600. The foam cores 602 are placeholders for the receptacles of the foam body. The foam cores 602 are essentially cylindrical and essentially as long as the module housing 100 is high. To facilitate insertion, the foam cores 602 have cross-sectional areas corresponding to the recesses 108. The cross-sectional areas also form the stops 106.As a result, the foam cores 602 seal the module housing 100 at the recesses 108 and stops 106, creating a sealed mold cavity open at the top within the side walls 604 of the module housing 100. The stops 106 are formed on the foam cores 602 as axially extending grooves 606. The grooves 606 are formed in the foam material during foaming and thus form the crush ribs running axially along the receptacles.

[0049] For foaming, the foam material is metered into the mold cavity in liquid form. The mold cavity is then closed with a lid. The lid is not pressure-tight and can have pressure equalization openings. Foaming thus takes place without pressure. The side walls 604 are not deformed. The foam material reacts in the mold cavity to form a solid foam that completely molds the mold cavity, including the foam cores 602. The foam material can also bond firmly to the side walls. The foam cores 602 are designed such that the foam material does not adhere firmly to the foam cores 602. After reacting, the module housing with the foamed-in foam body is removed from the foaming tool 600. The foam cores 602 are pulled out of the foam body again through the recesses 108.

[0050] In other words, a module housing with integrated cell fixation and positioning as well as short-circuit protection is presented.

[0051] In contrast to the consumer sector, in the automotive sector, electrically insulating shrink tubing applied to the cell jacket is not typically used to connect round cells in series via a cell connector. Eliminating the shrink tubing can save material and costs, as well as reduce the system's dimensional tolerances.

[0052] However, the heat shrink tubing can hold an insulating washer in place, which may be necessary if the cells are connected using cell connectors. If the cells are not exactly aligned axially during assembly of the cell modules or the cell connectors have a diameter that is too small, the cell base of the second cell can collide with the cell connector of the first cell. This can lead to the cell connector being bent so that it touches the jacket of the first cell and thus the negative pole of the same cell, causing a short circuit and thus damaging the cell. It is therefore necessary to attach the insulating washer to the cell in another way to ensure that it cannot become detached from the cells before the modules are assembled. The insulating washer can be glued, for example.

[0053] If modules lack a positioning and locking device, this can lead to the cells "wandering" or slipping within the module during operation. This, in turn, can cause the contact between the cells to be interrupted, leading to either partial or even complete battery failure. In the worst case, an arc could occur, which could cause serious damage or even a fire in the battery.

[0054] The approach presented here positions and secures the cells axially in the module housing. Furthermore, the approach presented here prevents an electrical short circuit if the cell cup of another cell collides with the cell connector of the first cell during assembly.

[0055] During assembly, the cells are inserted into the designated openings in the module with the positive pole first. The diameter of the openings can be the same as or slightly larger than the diameter of the cells. The module is designed so that the cell can only be inserted as far as the desired end position. This is achieved by making the last opening smaller than the cell. In this case, the positive pole of the cell protrudes from this opening; the casing (and thus the negative pole) is covered by the smaller housing opening. The opening is large enough to allow the cell connector to be installed (e.g. by welding). The opening is small enough to cover the cup shoulder of the cell.

[0056] The approach presented here saves material because it eliminates the use of insulating disks. Furthermore, it increases electrical safety. It also provides advantages in terms of mechanical safety because it achieves a defined cell layer.

[0057] To position and secure the cells in the axial direction, a foam body with the appropriate openings for accommodating the cells is used. To simplify production, the opening in the module housing has a special shape. This allows the foam cores to be demolded toward the closed side of the mold housing. This allows foaming into the open mold of the mold.

[0058] The opening at the positive terminal is still smaller than the cell diameter. Using the approach presented here, the foam core, which is more or less the same diameter as the cell, can be pulled through a smaller hole that serves as the insulator or stop.

[0059] The solution presented here is not to use a closed ring as a stop and insulator, but only partial constrictions around the circumference. The foam core thus has corresponding grooves, which then act as "crush ribs" in the foam itself and thus also serve to secure the cell. The stops are positioned precisely where the cell crown material is located, because in the areas between the contact springs of the cell crown and the connecting bars to the next cell crown, a short circuit to the cell jacket cannot occur. Thus, when viewed from above, the stops are more or less concealed by the cell crown.

[0060] In Fig. 4 A simplified representation of a module housing is shown. The insulators and stops are the 10 small bulges in the 36 circles. They have defined positions resulting from the geometry of the cell crowns.

[0061] For example, recesses for the contact springs of the cell crowns are located at the 0:30, 1:30, 4:30, 5:30, 6:30, 7:30, 10:30, and 11:30 positions. Furthermore, recesses for insulating the connecting bridges of the cell crowns are located at the 3:00 and 9:00 positions.

[0062] In Fig. 6A schematic diagram of a foaming tool is shown. It has an essentially rectangular cavity with 36 foam cores. This allows a module housing to be inserted into this cavity with the opening facing upwards. The appropriate amount of conditioned polyol-isocyanate mixture is then metered into the open mold using a mixing system, and the tool is then closed with a suitable cover. The mass now begins to react and expands, filling the entire cavity of the module housing. Once the foam has fully reacted, the cover can be opened again, and the finished foamed module housing can be removed from the cavity. The result is a housing with a hard outer shell and soft holes inside, which then accommodate the cells.

[0063] The resulting ribs serve to radially secure the cells, allowing the foam to precisely adapt to the cell diameter when the cells are inserted into the hole. The ribs create a small "displacement volume" with low joining forces. If, on the other hand, a cell were pressed into a circular hole designed to accommodate the smallest possible cell diameter, the forces would be significantly higher for a cell with a diameter at the upper tolerance limit, as the displacement volume would be larger. Fixation with ribs is less susceptible to tolerances than fixation without ribs.

[0064] Since the devices and methods described in detail above are exemplary embodiments, they can be modified to a large extent by those skilled in the art. In particular, the mechanical arrangements and the relative sizes of the individual elements are chosen merely as examples. LIST OF REFERENCE SYMBOLS

[0065] 100Module housing 102Foam body 104Receptacle 106Stop 108Recess 110Housing half 112Row 114Through opening 116Connecting contour 200Battery module 202Round cell 204Cell cup 206Negative pole 208Positive pole 210Cell connector 300Embossing 302Contact spring 304Insertion bevel 400clear width 402crush rib 500Connecting bridge 600Foaming tool 602Foam core 604Side wall 606Groove

Claims

1. Module housing (100) made of an electrically insulating plastic material, with a foam body (102) made of an electrically insulating foam material, wherein the foam body (102) comprises substantially cylindrical receptacles (104) for round cells (202), wherein the module housing (100) comprises, at the receptacles (104), axially aligned stops (106) for cell cups (204) of the round cells (202) and recesses (108) for positive terminals (208) of the round cells (202), wherein the foam body (102) comprises, per receptacle (104), a plurality of axially extending along the receptacle (104) crush ribs (402).

2. Module housing (100) according to claim 1, with through-openings (114) aligned with the receptacles (104) for the round cells (202), wherein a stop (106) and a through-opening (114) are each arranged on opposite sides of a receptacle (104).

3. Module housing (100) according to claim 2, with two housing halves (110), wherein the foam body (102) is arranged between the housing halves (110), wherein in each housing half (110) the stops (106) and the through-openings (114) are arranged in rows (112) next to one another, wherein rows (112) of stops (106) and through-openings (114) alternate.

4. Module housing (100) according to one of the preceding claims, with a connecting contour (116) arranged on at least one housing side for connecting with a further module housing (100) of identical design.

5. Battery module (200) with at least one module housing (100) according to one of the preceding claims, wherein a round cell (202) is arranged in the foam body (102) per receptacle (104), wherein cell cups (204) of the round cells (202) rest on an inner side of the stops (106) and positive terminals (208) of the round cells (202) are arranged in the recesses (108), wherein on an outer side of the stops (106) cell connectors (210) rest, which are electrically conductively connected with the positive terminals (208), wherein the cell connectors (210) are electrically insulated from the cell cups (204) by the stops (106).

6. Battery module (200) according to claim 5, with a module housing (100) according to one of claims 2 to 4, wherein the cell connectors (210) on a side facing away from the round cells (202) comprise crown-shaped arranged contact springs (302), wherein between a contact spring (302) and the cell cup (204) a stop (106) is arranged in each case.

7. Method for producing a module housing (100) according to one of the preceding claims 1 to 4, wherein the module housing (100) with the stops (106) and recesses (108) is manufactured from an electrically insulating plastic material, and the foam body (102) with the receptacles (104) is foamed in a foaming tool (600) from an electrically insulating foam material.

8. Method according to claim 7, wherein the module housing (100) with the stops (106) first is arranged in the foaming tool (600), wherein the foam material is dosed into an inner space of the module housing (100) and the module housing (100), after a reaction of the foam material with the foam body (102), is removed from the foaming tool (600), wherein foaming cores (602) of the foaming tool (600) representing the receptacles (104) are pulled out of the receptacles (104) through the recesses (108).