Battery housing for housing multiple battery components, battery with battery housing, and battery system with cooling fluid storage container and heat exchanger device.

Abstract

The present invention relates to a battery housing (1) for housing a number of battery components (3, 4), the battery housing (1) comprising a first battery housing component (10), a second battery housing component (20), and at least one battery component holder (30) having a number of housing cavities (31) for housing the battery components (3, 4). Each housing cavity (31) has one inner wall (311) extending from a first opening (312) of each housing cavity (31) to a second opening (312) of each housing cavity (31), and at least one battery component holder (30) is sandwiched between the first battery housing component (10) and the second battery housing component (20) and connected to them, respectively, such that each first opening (312) of the first battery housing component (10) and each second opening (313) of the second battery housing component (20) face each other. Each housing cavity (31) has an inner wall (311) with at least one groove (40) extending from a first opening (312) to a third opening (313). When battery components (3, 4) are inserted into the housing cavity (31), each cooling fluid channel (50) is formed extending from the first opening (312) to the second opening (313) of the housing cavity (31), and the cooling fluid channels (50) are confined by the groove (40) and the battery components (3, 4). The present invention also relates to a battery (5) having a battery housing (1), and to a battery system (6) having a battery (5), a cooling fluid storage container (90), and a heat exchanger device (110).

Description

Technical Field

[0001] The present invention relates to a battery housing for accommodating a number of battery components. Further, the present invention also relates to a battery provided with the battery housing, and a battery system provided with a cooling fluid storage container and a heat exchanger device.

[0002] In particular, in a high-performance battery such as used, for example, as a traction battery of an automobile, a high output is realized during charging and discharging. Such a battery can already operate at a voltage of several hundred volts at present. Further, at present, it is already possible to generate charging and discharging currents of several hundred amperes. Requirements regarding the power consumption of such a battery will further increase in the future. Due to this high power consumption, the heat loss in the battery during the charging and discharging processes is already high at present and will be even higher in the future. In order to protect the battery from thermal damage and achieve high efficiency during charging and discharging, it is important to keep the battery within a defined temperature range. For this purpose, it is necessary to cool the battery by discharging the amount of heat generated by the heat loss.

[0003] From the prior art, various types of cooling are known. Basically, the various types of cooling can be distinguished by the heat transfer medium and by the type of heat transfer between the heat transfer medium and the battery components.

[0004] For example, liquid cooling can be achieved by a heat exchanger through which a liquid heat transfer medium flows. The heat exchanger is often located beneath the battery components, where it is conductively connected to the battery components via contact heat transfer. Here, the sensitive heat capacity of the liquid heat transfer medium is utilized, allowing heat emitted from the battery components or their respective batteries to be absorbed by the temperature difference and released either directly into the surroundings or through the air conditioning circuit. In this case, conductive liquids or mixed liquids are often used as the heat transfer medium. A drawback of these cooling systems is that the heat transfer medium and the conductive battery components must never be in direct contact. This increases the requirements for airtightness in the battery housing, and consequently increases the manufacturing cost of the battery housing. Furthermore, the additional heat exchanger increases the thermal resistance of heat transfer between the battery components and the heat transfer medium, which is another drawback. Finally, contact heat transfer between the heat exchanger and the battery components is limited to almost a single point on the battery component, most often the bottom surface. This can result in an uneven temperature distribution within the battery component.

[0005] As an evolution of liquid cooling using a heat exchanger in contact with battery components, the liquid heat transport medium can vaporize through heat absorption within the heat exchanger, resulting in higher heat transfer and a higher heat absorption per unit mass of the heat transport medium due to the enthalpy of vaporization. After condensation, the heat transport medium can be sent back to the heat exchanger in liquid form. However, disadvantages remain, such as high sealing requirements, still high thermal resistance to heat transfer between battery components and the heat transport medium, and locally limited heat transfer.

[0006] In cooling systems that use air as the heat transport medium, battery components can be in direct contact with the heat transport medium, or even surrounded by it. This eliminates the need for additional heat exchangers. However, a drawback of this cooling system is that heat absorption is limited by the air acting as the heat transport medium. When heat absorption is limited, it becomes insufficient to meet the aforementioned requirements, such as those for high-performance batteries in automobiles.

[0007] Finally, among the conventional technologies, a recent development is the two-phase immersion cooling system. Similar to using air as a heat transport medium, cooling is achieved by the direct flow of a liquid heat transport medium around the component being cooled. Therefore, a key characteristic of the liquid heat transport medium is its dielectric properties, as it is in direct contact with the battery components, namely the conductive and potential-inductive components. Furthermore, even with a dielectric liquid heat transport medium, in addition to the high heat transfer due to direct flow around the component being cooled, the enthalpy of vaporization and the associated high heat absorption capacity can be utilized when the heat transport medium vaporizes due to the heat input from the battery cells being cooled during heat transfer. The drawbacks of such cooling systems are that they are often technically very complex and require additional units to ensure that the heat transport medium circulates actively within the cooling circuit. This additional effort negatively impacts the overall cooling efficiency.

[0008] The present invention is based on the objective of providing a battery housing for accommodating battery components that enables efficient cooling of the battery components while simultaneously having improved torsional and bending rigidity.

[0009] The problem on which the present invention is based is solved by a battery housing having the features of claim 1. Advantageous embodiments of the battery housing are described in claims dependent on claim 1.

[0010] More specifically, the problem on which the present invention is based is solved by a battery housing for housing a number of battery components, the battery housing comprising a first battery housing component, a second battery housing component, and at least one battery component holder having a number of housing cavities for housing battery components, each housing cavity having one inner wall extending from a first opening of each housing cavity to a second opening of each housing cavity, and at least one battery component holder is sandwiched between the first battery housing component and the second battery housing component, with each first opening of the first battery housing component and each second opening of the second battery housing component facing each other, and connected to them respectively. Each housing cavity has an inner wall with at least one groove extending from a first opening to a second opening. When a battery component is inserted into a housing cavity, a cooling fluid channel is formed, extending from the first opening to the second opening of the housing cavity, and this cooling fluid channel is confined by the groove and the battery component.

[0011] The battery housing according to the present invention has the advantage of improved efficient cooling of the battery housing. In the installation location of the battery housing, for example in an automobile, the cooling fluid inside the battery housing exists as a liquid phase in a reservoir in the region between the first battery housing component and the battery component holder. In the reservoir, the cooling fluid is in a state close to the boiling curve, preferably on the boiling curve of the cooling fluid. The cooling fluid channel, formed by the grooves in the inner wall of the housing cavity and the battery component inside the housing cavity, has an inlet opening in the region of the first opening of the housing cavity and an outlet opening in the region of the second opening of the housing cavity. Due to the pressure inside the cooling fluid, the cooling fluid in the battery housing rises against gravity through the inlet opening of the cooling fluid channel, absorbing heat from the battery component at this time. Due to the absorbed heat, the cooling fluid begins to boil and vaporizes. The vaporized cooling fluid rises again along the cooling fluid channel, absorbing heat from the battery component at this time, and flows out from the outlet opening of the cooling fluid channel, preferably still in the wet vapor region. As the cooling fluid flows through the cooling fluid channel, it comes into direct contact with the battery components. This reduces the thermal resistance between the cooling fluid and the battery components, thereby improving heat transfer from the battery components to the cooling fluid.

[0012] Furthermore, the battery housing according to the present invention has the advantage of improved cooling performance. Due to the phase change of the cooling fluid as it flows through the cooling fluid channel, the amount of heat increased relative to the amount of cooling fluid flowing through the cooling fluid channel can be absorbed by the enthalpy of vaporization of the cooling fluid. Moreover, the battery housing according to the present invention has more uniform cooling. This is because the phase change of the cooling fluid proceeds isothermally, so high temperature uniformity exists within the cooling fluid.

[0013] Finally, the battery housing has the advantage of improved torsional and bending rigidity. Because the battery component holder is sandwiched between the first and second battery housing components and connected to them, it can absorb shear forces better, resulting in a battery housing with high torsional and bending rigidity. Furthermore, the wall thickness of the first battery housing component, the second battery housing component, and the battery component holder, which is necessary to support the generated internal pressure, can be reduced.

[0014] Preferably, the battery component is formed as a battery cell. Preferably, the battery cell is formed as a cylindrical battery cell. Furthermore, the battery component can also be formed as a battery module.

[0015] The first battery housing component is preferably formed as a battery housing shell. The first battery housing component can also be called the battery housing lower shell, or more generally, the lower shell.

[0016] The second battery housing component is preferably formed as a battery housing shell or a battery housing cover, and the battery housing cover may similarly be formed as a battery housing shell. The second battery housing component can also be called a battery housing upper shell, or more generally, an upper shell.

[0017] A battery component holder can also be called a battery cell holder or cell holder.

[0018] Each housing cavity is designed to house a battery component. The housing cavity is formed as a through-opening within the battery component holder. The housing cavity is preferably formed in a cylindrical shape. The free cross-section of the housing cavity is preferably formed in a circular shape.

[0019] Alternatively, the containment cavity is formed in a rectangular or square shape. The free cross-section of the containment cavity is preferably rectangular, and particularly preferably square.

[0020] The inner wall or a portion of the inner wall of each housing cavity is in contact with the battery components, for example, the battery cells if they are inserted into the housing cavity. A battery housing formed in this manner has the advantage of being able to house the battery components in an improved, particularly improved, state. This reduces undesirable fluctuations in the position of the battery components within the battery housing.

[0021] The free cross-section of each housing cavity is preferably smaller than the cross-section of each battery component. A battery housing formed in this manner has the advantage of being able to securely house the battery components within the housing in an improved manner. In particular, a frictional joint is formed between each housing cavity and the battery component inserted into the housing cavity.

[0022] Preferably, each groove in the inner wall extends parallel to the longitudinal extension of each housing cavity. The longitudinal extension of the housing cavity passes from the first opening to the second opening of the housing cavity.

[0023] Each groove is formed continuously from the first opening of each housing cavity to the second opening of each housing cavity.

[0024] Each of the formed cooling fluid channels is created for the passage of the cooling fluid.

[0025] Each cooling fluid channel formed has an inlet opening in a first opening region of the housing cavity and an outlet opening in a second outlet opening region of the housing cavity, wherein the free cross-section of the inlet opening is preferably smaller than that of the outlet opening. A battery housing formed in this manner has the advantage of improved efficient cooling of the battery housing.

[0026] The inner walls of each housing cavity preferably have more than one groove. A battery housing formed in this manner has the advantage of further improving the cooling performance of the battery housing.

[0027] The inner wall of each housing cavity preferably has at least 2, 4, 8, 12, 14, or 16 grooves extending along the longitudinal portion of the housing cavity. More preferably, these grooves are arranged at equidistant angles from each other around the longitudinal axis of the housing cavity. Preferably, the longitudinal axis of the housing cavity passes through the center of the free cross-section along the longitudinal portion of the housing cavity. A battery housing formed in this manner has the advantage of further improving the cooling performance of the battery housing and simultaneously increasing the cooling surface area of ​​the battery components, thereby allowing for more uniform cooling of the battery components.

[0028] Preferably, the inner wall of each receiving cavity has grooves that are at least partially grouped and arranged. The grooves of the receiving cavities grouped and arranged in two or more are closer to each other than the other grooves of the same receiving cavity. For example, two grooves can be grouped and arranged in pairs of two. The grooves grouped and arranged in pairs of two are closer to each other than the other grooves of the same receiving cavity. Preferably, each receiving cavity has six grooves grouped and arranged in pairs of two. Alternatively, each receiving cavity has four grooves grouped and arranged in pairs of three. The battery housing formed in this way has the advantage that the filling density of the battery housing increases and the torsional rigidity and bending rigidity are further improved. The grooves grouped and arranged with respect to each other can be arranged on the inner wall of the receiving cavity so that the battery component holder has an optimal material distribution with respect to torsional rigidity and bending rigidity at all locations.

[0029] The battery component holder is connected to the first battery housing component and / or the second battery housing component, preferably by material bonding, in particular by welding and / or adhesion. The battery housing formed in this way has the advantage that the torsional rigidity and bending rigidity of the battery housing are improved.

[0030] More preferably, the battery component holder is connected to the first battery housing component and / or the second battery housing component by form-fitting and / or friction-fitting. The connection by form-fitting and / or friction-fitting can be formed as a tongue joint and / or as a clamp connection. The battery housing formed in this way has the advantage that the torsional rigidity and bending rigidity of the battery housing are further improved.

[0031] Preferably, the battery housing is formed such that at least one groove has a groove depth that changes along its longitudinal extension.

[0032] The battery housing formed in this way has the advantage that the efficient cooling of the battery housing is further improved. During the charging and discharging processes, the battery components housed within the battery housing generate different amounts of heat along the longitudinal extension of the battery components. By varying the groove depth along the longitudinal extension thereof, the cooling fluid flowing through the cooling fluid channels can absorb different amounts of heat along the longitudinal extension of the battery components, so that the required cooling can be achieved, and thus the efficient cooling can be improved.

[0033] The groove depth is in a direction orthogonal to the longitudinal extension of the groove and extending radially towards the inner wall of the accommodation cavity starting from the central point of the free cross-section of the accommodation cavity. In other words, the groove depth of the groove expands the free cross-section of the accommodation cavity radially.

[0034] Preferably, at least one groove has a constant groove width along its longitudinal extension. The groove width is orthogonal to the longitudinal extension of the groove and orthogonal to the groove depth of the groove.

[0035] Preferably, the battery housing is formed such that the groove depth of at least one groove changes stepwise along its longitudinal extension.

[0036] The battery housing formed in this manner has the advantage of further improving the efficient cooling of the battery housing. The local pressure inside the cooling fluid channel formed by the grooves formed in this manner and the battery components inserted into the housing cavity changes in a stepwise manner with the stepwise changing groove depth. Thus, the local pressure inside the cooling fluid channel can be made stepwise higher or lower than the vaporization pressure of the cooling fluid along the longitudinal extension of the cooling fluid channel. This allows the amount of heat absorbed by the cooling fluid to be adjusted as needed in a further improved manner along the longitudinal extension of the battery components by the vaporization of the cooling fluid. This makes it possible to change the heat transfer rate from the battery components to the cooling fluid, in particular increasing the heat transfer rate.

[0037] Preferably, the battery housing is formed such that at least one groove in the region of a first opening of the housing cavity has a first groove depth, the first groove depth being smaller than a second groove depth in the region of a second opening of the housing cavity.

[0038] The battery housing formed in this manner offers the advantage of further improved efficient cooling of the battery housing and, at the same time, further enhanced cooling performance. The cooling fluid rises through the cooling fluid channel in the region of the first opening of the housing cavity. Due to the second groove depth being greater than the first groove depth, the cooling fluid flowing through the cooling fluid channel easily vaporizes as it transitions from the first groove depth to the second groove depth, absorbing thermal energy from the battery components. Because the cooling fluid expands due to the greater second groove depth, the local pressure in the region of the second groove depth is below the vaporization pressure present.

[0039] Preferably, the battery housing is formed such that the first groove depth is 0.1 mm to 1 mm, more preferably 0.2 mm to 0.4 mm, and even more preferably 0.3 mm, and the second groove depth is 0.5 mm to 2 mm, and even more preferably 0.8 mm.

[0040] The battery housing thus constructed has the advantage of further improving the efficient cooling of the battery housing. Tests showed that when the first groove depth was 0.1 mm to 1 mm, preferably 0.3 mm, the cooling fluid rose particularly well within the formed cooling fluid channel. Furthermore, tests showed that when the second groove depth was 0.6 mm to 1 mm, preferably 0.8 mm, the cooling fluid vaporized particularly easily. Surprisingly, it was shown that combining the regions of the first and second groove depths further improved efficient cooling. In particular, in the region of the first groove depth, exactly the same amount of cooling fluid that vaporizes and further rises within the cooling fluid channel in the region of the second groove depth can rise within the cooling fluid channel. This achieves a consistent vaporization process.

[0041] Preferably, the battery housing is formed such that at least one groove extends along the longitudinal portion and has a first groove depth of 1 mm to 8 mm, more preferably 1 mm to 5 mm, and even more preferably 2 mm.

[0042] The battery housing thus formed has the advantage of further improving the efficient cooling of the battery housing and simultaneously improving the cooling performance. Surprisingly, the longitudinal extension with a first groove depth of 1 mm to 8 mm, preferably 2 mm, is adjusted so that the amount of cooling fluid flowing through the cooling fluid channel has a vapor content of 50% when the cooling fluid flows out of the outlet opening of the cooling fluid channel, thereby further increasing the absorption of heat by the cooling fluid with respect to the cooling fluid flowing through the cooling fluid channel.

[0043] Preferably, the battery housing is formed such that the inner wall of each housing cavity has at least one compression rib extending from the first opening toward the second opening, so that when a battery component is inserted into the housing cavity, the compression rib deforms and the battery component is held in place within the housing cavity without play.

[0044] A battery housing constructed in this manner has the advantage of further improving the efficient cooling of the battery housing. Because the battery components are held within the housing cavity without play, the cooling fluid channels formed by the battery components and grooves have improved sealing to the housing cavity, and therefore less cooling fluid enters the housing cavity. Furthermore, a battery housing constructed in this manner has the advantage of better holding of the battery components inserted within the housing cavity. This improves the torsional and bending rigidity of the battery housing.

[0045] The characteristic that the compression ribs extend from the first opening of the housing cavity towards the second opening of the housing cavity can also be expressed as the compression ribs having a longitudinally extending portion from the first opening of the housing cavity towards the second opening of the housing cavity.

[0046] Preferably, the inner wall of each containment cavity has three, four, or more compression ribs. Preferably, the compression ribs of each containment cavity are equally spaced from one another. In particular, the compression ribs of each containment cavity are arranged at equidistant angles from one another around the longitudinal axis of the containment cavity.

[0047] The battery housing formed in this manner offers the advantage of improved efficient cooling of the battery housing, as well as improved torsional and bending rigidity. Three or more compression ribs further securely hold the battery components within the housing cavity. In addition, the rigidity of the battery component holder itself is increased because the battery components are housed without play within the housing cavity. Finally, the play-free housing reduces vibration of the components, especially when the battery components housed within the battery component holder lose contact with the protrusions.

[0048] Preferably, the battery housing is formed such that at least one compression rib of the first opening of the housing cavity extends for a length of 5 mm to 15 mm, preferably 7 mm, in the direction toward the second opening of the housing cavity.

[0049] The battery housing thus constructed has the advantage of further improving the efficient cooling of the battery housing. Tests have shown that compression ribs extending 5 mm to 15 mm, preferably 7 mm, from the first opening towards the second opening of the housing cavity further improve the sealing of the cooling fluid channel to the housing cavity, thus reducing the amount of cooling fluid entering the housing cavity.

[0050] Preferably, the battery housing is formed such that at least one compression rib has a single height extension of 0.1 mm to 0.5 mm, preferably 0.3 mm.

[0051] The battery housing formed in this manner has the advantage of further improving the efficient cooling of the battery housing and simultaneously enhancing cooling performance. Tests have shown that compression ribs with height extensions of 0.1 mm to 0.5 mm, preferably 0.3 mm, further improve the sealing of the cooling fluid channels. In particular, the sealing of the cooling fluid channels is improved even when the local pressure within the cooling fluid channels increases. This allows a larger amount of cooling fluid to flow through the cooling fluid channels, thus transferring a greater amount of heat from the battery components to the cooling fluid.

[0052] The height extension portion of the compression rib is the direction of extension of the compression rib that is perpendicular to the longitudinal extension portion of the compression rib and starts from the inner wall of the housing cavity and extends in the direction of the free cross-section of the housing cavity. In other words, the height extension portion of the compression rib reduces the free cross-section of the housing cavity.

[0053] Preferably, the battery housing is formed such that the inner wall of each housing cavity has at least one stabilizer rib extending in the direction of the first opening. Preferably, the stabilizer rib has a height extension along its longitudinal extension that begins at the second opening and decreases in the direction of the first opening.

[0054] A battery housing formed in this manner has the advantage of further improving the torsional and bending rigidity of the battery housing, particularly in the second opening region of the housing cavity for the battery component holder.

[0055] Preferably, at least one stabilizer rib transitions into the inner wall of the accommodation cavity. In particular, at least one stabilizer rib extends from the second opening toward the first opening to half of the longitudinal extension of the accommodation cavity.

[0056] Preferably, the battery housing is formed such that the first battery housing component has a structured internal support surface with a number of projections, the number of projections being positioned opposite a number of first openings in each housing cavity of at least one battery component holder, so that when battery components are inserted into the housing cavity, these battery components rest on their respective projections.

[0057] The battery housing formed in this manner has the advantage of further improving the efficient cooling of the battery housing. As the battery components inserted into the housing cavity come into contact with the protrusions, the formation of bubbles in the cooling fluid is avoided as the cooling fluid flows in from the inlet opening of the cooling fluid channel, thereby improving the heat transfer rate between the cooling fluid and the battery components.

[0058] To this end, the structured internal support surface is formed to accommodate liquid cooling fluid between the projections of the internal support surface, so that the liquid cooling fluid forms interconnected reservoirs. Preferably, the projections are formed to protrude from the reservoir of liquid cooling fluid, so that battery components resting on the projections do not come into direct contact with the cooling fluid in the reservoirs.

[0059] Preferably, the projection extends from the base surface of the first battery housing component into the housing volume of the battery housing, and the projection has a longitudinal extension in the range of 1 mm to 8 mm, preferably 4 mm. A battery housing formed in this manner has the advantage that the battery housing always has a sufficient amount of liquid cooling fluid in the housing volume of the battery housing, and a continuous vaporization process of the cooling fluid is achieved. This further improves the efficient cooling of the battery housing.

[0060] In the installation location of a battery housing, for example in an automobile, the base surface of the first battery housing component passes through a horizontal plane.

[0061] The longitudinally extending portion of the projection starts from the base surface of the first battery housing component and is perpendicular to the housing volume of the battery housing.

[0062] Preferably, the projection is formed in a cylindrical shape. Alternatively, the projection has a cross-sectional area corresponding to the cross-sectional area of ​​the battery component.

[0063] Preferably, each projection has a diameter smaller than the housing cavity. A battery housing formed in this manner has the advantage that it is housed on a structured internal support surface and that the cooling fluid forming the reservoir can flow well into the cooling fluid channel from the inlet opening of the cooling fluid channel.

[0064] Preferably, the first battery housing component has a number of connecting protrusions extending from the base surface of the first battery housing component into the housing volume of the battery housing. The connecting protrusions are preferably formed in a cylindrical shape. Preferably, the connecting protrusions are arranged so that each protrusion is adjacent to three other protrusions. Preferably, the connecting protrusions have a smaller cross-section than the other protrusions. The connecting protrusions of the first battery housing component are formed to connect to a battery component holder, preferably by material bonding.

[0065] The battery housing formed in this manner has the advantage of improving the torsional and bending rigidity of the battery housing.

[0066] Preferably, the battery housing is formed to have a circumferential inner wall contour corresponding to the outer wall contour of at least one battery component holder, and the at least one battery component holder is connected to the first battery housing component such that the outer wall contour of the at least one battery component holder fits snugly to the inner wall contour of the first battery housing component.

[0067] The battery housing formed in this manner has the advantage of further improving the torsional and bending rigidity of the battery housing. The inner wall contour of the first battery housing component fits snugly with the outer wall contour of the battery component holder, resulting in an additional shape-coupled connection between the battery component holder and the first battery housing component.

[0068] Preferably, the second battery housing component has a circumferential inner wall contour that corresponds to the outer wall contour of at least one battery component holder. Preferably, at least one battery component holder is connected to the second battery housing component such that the outer wall contour of at least one battery component holder fits snugly to the inner wall contour of the second battery housing component.

[0069] The battery housing formed in this manner has the advantage of further improving the torsional and bending rigidity of the battery housing. The inner wall contour of the second battery housing component fits snugly with the outer wall contour of the battery component holder, resulting in an improved additional shape coupling connection between the battery component holder and the second battery housing component.

[0070] Preferably, the battery housing is formed such that the battery component holder is connected to the first battery housing component and / or the second battery housing component by material bonding through welding and / or adhesive.

[0071] The battery housing formed in this manner has the advantage of improving the torsional and bending rigidity of the battery housing.

[0072] Preferably, the battery housing is formed such that the battery housing component holder is additionally connected to the first battery housing component and / or the second battery housing component by shape coupling and / or friction coupling.

[0073] The battery housing formed in this manner has the advantage of further improving the torsional and bending rigidity of the battery housing.

[0074] Preferably, the battery component holder is additionally connected to the first battery housing component and / or the second battery housing component by shape coupling and / or friction coupling using tongue and groove and / or clamp connections and / or screw connections.

[0075] Tongue and groove joints and / or clamp joints each have at least two corresponding connecting means. The two corresponding connecting means are connected to each other and are formed to maintain this connection by friction and / or shape coupling.

[0076] The clamp connection may be formed as a mortise joint. The mortise joint has at least one tenon, preferably a tubular tenon, and a corresponding groove for this tenon. The cross-section of the tenon may be larger than the free cross-section of the corresponding groove, so that when the tenon and groove are housed, a crimp connection is formed between the tenon and the groove.

[0077] The tenon may have a conical upper section. This allows the tenon to be easily fitted into the corresponding groove.

[0078] A tubular tenon has a mortise groove surrounding the tenon, and the receiving groove may have an undercut. Preferably, the receiving groove is provided to tongue and groove the tenon housed within the region of the mortise groove. The cross-section of the tenon may be formed smaller than the free cross-section of the corresponding receiving groove. A mortise and tenon connection formed in this manner may also be called a tongue and groove joint.

[0079] Preferably, one of the corresponding connecting means of a tongue and groove joint and / or clamp connection is formed integrally with the battery component holder. The respective corresponding connecting means are preferably formed integrally with the first battery housing component and / or the second battery housing component.

[0080] The two integrated and interconnected components are manufactured from the same component and are interconnected without any visible seams.

[0081] The battery housing formed in this manner has the advantage of improved efficient recyclability of the battery housing, as well as further improvements in torsional and bending rigidity. Because the connecting means are an integrated component of the battery component holder and / or the first battery housing component and / or the second battery housing component, the number of different materials used in the battery housing is further reduced, thereby improving efficient recyclability. For example, after removing the battery components and other electrical components, the battery housing can be mechanically shredded and reprocessed, for example, into recycled plastic.

[0082] Preferably, the battery component holder is additionally connected to the first battery housing component and / or the second battery housing component by form coupling and / or friction coupling using screw connections. Preferably, the screw connections have spring washers located within the first battery housing component and / or the second battery housing component. Preferably, the spring washers are at least partially surrounded by the material of the first battery housing component and / or the material of the second battery housing component.

[0083] Preferably, the first battery housing component and / or the second battery housing component has at least one threaded insert, the threaded insert being partially surrounded by the material of the first battery housing component and / or the second battery housing component. In particular, at least one threaded insert is formed as an insert part. The insert part is integrally formed with the first battery housing component and / or the second battery housing component during the manufacturing of the first battery housing component and / or the second battery housing component, and is surrounded by the material of the first battery housing component and / or the second battery housing component, particularly in injection molding or extrusion processes.

[0084] The battery housing formed in this manner has the advantage of being able to be manufactured at a lower cost. In particular, the first battery housing component and / or the second battery housing component can be manufactured in a single manufacturing process.

[0085] Preferably, the battery component holder and / or the first battery housing component and / or the second battery housing component are formed as injection-molded parts.

[0086] The battery housing formed in this way has the advantage of being able to be manufactured at a lower cost and at the same time being able to be equipped with additional functions during the injection molding process.

[0087] Preferably, the battery component holder and / or the first battery housing component and / or the second battery housing component have the same material or are formed from the same material.

[0088] The battery housing formed in this way has the advantage of further improving the efficient recyclability of the battery housing.

[0089] Preferably, the battery housing is configured such that it has at least one cooling fluid inlet for supplying cooling fluid to the housing volume of the battery housing and at least one cooling fluid outlet for discharging cooling fluid from the housing volume of the battery housing. The at least one cooling fluid inlet is fluid-connected to a first opening of each of at least one battery component holder, and the at least one cooling fluid outlet is fluid-connected to a second opening of each of at least one battery component holder.

[0090] The battery housing constructed in this manner has the advantage of improved efficient cooling of the battery housing. The vaporized cooling fluid is discharged from the battery housing's volume through a second opening and a cooling fluid outlet, allowing it to release the heat absorbed while liquefied outside the battery housing, for example in a heat exchanger device. The liquid cooling fluid returns to the battery housing's volume through a cooling fluid inlet and is then discharged again through a first opening in the battery component holder, allowing it to cool the battery components inserted within the battery component holder. This achieves a closed cooling circuit, thereby improving efficient cooling.

[0091] The cooling fluid inlet and / or cooling fluid outlet are preferably formed as hollow cylinders, particularly as nozzles. More preferably, the cooling fluid outlet and / or cooling fluid inlet are formed as insert components and connected to the first battery housing component and / or the second battery housing component by shape coupling and / or friction coupling. Preferably, the cooling fluid inlet and / or cooling fluid outlet are at least partially surrounded by the material of the first battery housing component and / or the second battery housing component.

[0092] The battery housing formed in this way has the advantage of being easy to manufacture.

[0093] In the mounting location of the battery housing, for example in an automobile, the longitudinally extending portion of the cooling fluid inlet is formed horizontally, and / or the longitudinally extending portion of the cooling fluid outlet is formed vertically.

[0094] In the mounting location of the battery housing, for example in an automobile, the first battery housing component is preferably located below the second battery housing component. In other words, in the mounting location of the battery housing in an automobile, the first battery housing component is preferably closer to the ground, for example, closer to the road, than the second battery housing component.

[0095] The cooling fluid outlet opening of the cooling fluid outlet is preferably located facing the ground, such as the road, at the mounting location of the battery housing, for example in an automobile.

[0096] In the mounting location of the battery housing, for example in an automobile, the cooling fluid inlet is preferably located below the cooling fluid outlet. For example, the cooling fluid inlet at the mounting location of the battery housing is located in the lower region of the battery housing, particularly the lower third of the battery housing, and the cooling fluid outlet is preferably located in the upper region of the battery housing, preferably the upper third of the battery housing.

[0097] The battery housing, thus constructed, has the advantage of further improving the efficient cooling of the battery housing. Because the cooling fluid inlet is located below the cooling fluid outlet, the entire cooling circuit can be designed without a cooling fluid supply pump.

[0098] Preferably, the battery housing has at least one through-opening, which is formed to accommodate power lines and / or data lines and / or fluid lines. The power lines and / or data lines and / or fluid lines can extend from the housing volume of the battery housing out of the housing volume of the battery housing through the through-opening.

[0099] Preferably, at least one through-opening is located in the first battery housing component. Preferably, the through-opening is an integral component of the battery housing and / or the first battery housing component.

[0100] The battery housing formed in this way has the advantage of being easy to manufacture, especially in a single manufacturing process.

[0101] Preferably, the battery housing is configured such that at least one cooling fluid inlet and / or at least one cooling fluid outlet is formed within the first battery housing component.

[0102] The battery housing formed in this way has the advantage of being able to be manufactured more cost-effectively. In particular, the first battery housing component can be manufactured in a single manufacturing process.

[0103] In the mounting location of the battery housing, for example in an automobile, the cooling fluid inlet is located in the lower region of the first battery housing component, particularly in the lower third of the first battery housing component, and the cooling fluid outlet is preferably located in the upper region of the first battery housing component, preferably in the upper third of the first battery housing component.

[0104] Furthermore, the present invention is based on the objective of providing a battery that improves efficient cooling while simultaneously improving torsional rigidity and bending rigidity.

[0105] The problem on which this invention is based is solved by a battery equipped with the aforementioned battery housing.

[0106] More specifically, the problem on which the present invention is based is solved by a battery comprising the aforementioned battery housing and a number of battery components formed as battery cells and / or battery modules, which are inserted into the housing cavity of at least one battery component holder.

[0107] The battery based on the present invention has the advantage of improved efficient cooling of the battery, as well as improved torsional and bending rigidity.

[0108] Furthermore, the present invention is based on the objective of providing a battery system that improves efficient cooling while simultaneously improving torsional and bending rigidity.

[0109] The problem on which the present invention is based is solved by a battery system having a battery comprising a battery housing and a plurality of battery components formed as battery cells and / or battery modules, inserted into the housing cavities of at least one battery component holder. The battery housing comprises a first battery housing component, a second battery housing component, and at least one battery component holder having a plurality of housing cavities for housing battery components, each housing cavity having one inner wall extending from a first opening of each housing cavity to a second opening of each housing cavity, and at least one battery component holder is sandwiched between the first battery housing component and the second battery housing component, with each first opening of the first battery housing component and each second opening of the second battery housing component facing each other, and connected to them respectively. Each housing cavity has an inner wall with at least one groove extending from a first opening to a second opening, so that when a battery component is inserted into the housing cavity, each housing cavity has a cooling fluid channel extending from the first opening to the second opening, which is confined by the groove and the battery component. The battery housing has at least one cooling fluid inlet for supplying cooling fluid to the housing volume of the battery housing and at least one cooling fluid outlet for discharging cooling fluid from the housing volume of the battery housing. The at least one cooling fluid inlet is fluid-connected to the first opening of each of the at least one battery component holder, and the at least one cooling fluid outlet is fluid-connected to the second opening of each of the at least one battery component holder.The battery system includes a cooling fluid storage container fluidly connected to at least one cooling fluid inlet via a fluid supply line for supplying cooling fluid to the storage volume of the battery housing, and a heat exchanger device fluidly connected to at least one cooling fluid outlet via a fluid discharge line for discharging cooling fluid from the storage volume of the battery housing, the heat exchanger device being fluidly connected to the cooling fluid storage container for supplying liquid cooling fluid.

[0110] The battery system according to the present invention has the advantage of improved efficient cooling of the battery system. In the installation location of the battery system, for example in an automobile, a liquid cooling fluid flows from a cooling fluid storage container into the housing volume of the battery housing via a fluid supply line and a cooling fluid inlet. The liquid cooling fluid is in a reservoir located in the region between the first battery housing component and the battery component holder. In the reservoir, the cooling fluid is in a state close to the boiling curve, preferably on the boiling curve of the cooling fluid. A cooling fluid channel, formed by grooves in the inner wall of the housing cavity and the battery components located within the housing cavity, has an inlet opening in the region of the first opening of the housing cavity and an outlet opening in the region of the second opening of the housing cavity. Due to the pressure within the cooling fluid, the cooling fluid in the battery housing rises against gravity through the inlet opening of the cooling fluid channel, absorbing heat from the battery components in the process. The absorbed heat causes the cooling fluid to begin boiling and vaporize. The vaporized cooling fluid rises again along the cooling fluid channel, continuously absorbing heat from the battery components, and flows out from the outlet opening of the cooling fluid channel with a vapor content preferably in the 50% range. This moist vapor flows out of the storage volume of the battery housing through the cooling fluid outlet and reaches the heat exchanger device via the fluid discharge line. In the heat exchanger device, the vaporized cooling fluid releases the heat absorbed from the battery components located in the battery component holder, and in the process, liquefies again. The liquefied cooling fluid then returns from the heat exchanger device to the cooling fluid storage container. This circulation process improves the efficient cooling of the battery components inserted in the battery component holder. In particular, it is possible to omit the cooling fluid supply pump.

[0111] Preferably, the heat exchanger device is fluidly connected to a cooling fluid storage container via a storage fluid supply line.

[0112] Preferably, the battery system has at least one cooling fluid supply pump, preferably exactly one, for supplying cooling fluid. The cooling fluid supply pump is preferably located in a fluid supply line between the cooling fluid storage container and the battery housing. Preferably, at least one cooling fluid supply pump is located in a storage fluid supply line between the heat exchanger device and the cooling fluid storage container.

[0113] The battery system constructed in this way has the advantage of improved cooling performance and robust cooling. Because a cooling fluid supply pump can deliver a larger volume of cooling fluid through the battery housing, more heat can be released from the battery housing.

[0114] Preferably, the heat exchanger device is configured such that the cooling fluid flowing through the heat exchanger device releases heat to the surroundings.

[0115] Alternatively or additionally, the battery system may have an air conditioning circuit, which is provided to absorb heat from the cooling fluid flowing through a heat exchanger.

[0116] The battery system constructed in this manner has the advantage of further improving the cooling performance of the battery system. This air conditioning circuit allows the cooling fluid flowing through the heat exchanger to release heat into the air conditioning circuit within the heat exchanger, regardless of ambient conditions. As a result, the battery system constructed in this manner has an expanded operating temperature range.

[0117] Further advantages, details, and features of the present invention will become apparent from the embodiments described below. [Brief explanation of the drawing]

[0118] [Figure 1] This is an exploded view of a battery housing based on the first embodiment. [Figure 2] This is a cross-sectional view of a battery component holder in the area of ​​the housing cavity of a battery housing according to a second embodiment. [Figure 3] A perspective view of the battery component holder of the battery housing in the area of ​​the housing cavity according to the third embodiment. [Figure 4] This is a diagram of a battery component holder of a battery housing according to a fourth embodiment, viewed from above through the second opening of the housing cavity. [Figure 5] This is a diagram of a battery component holder of a battery housing according to a fifth embodiment, viewed from above through the first opening of the housing cavity. [Figure 6] This is a perspective view of a battery component holder inserted into the first battery housing component of a battery housing according to the sixth embodiment. [Figure 7] This is a cross-sectional view of the battery in the area of ​​the housing cavity according to the seventh embodiment. [Figure 8] This is a perspective view of the battery housing according to the eighth embodiment. [Figure 9] This is a further perspective view of the battery housing based on the eighth embodiment. [Figure 10] This is a schematic diagram of a battery system based on the ninth embodiment.

[0119] In the following description, the same reference numerals represent the same component or feature, and therefore, a description of a component made with reference to one figure is also valid for other figures, so repeated descriptions are omitted. Furthermore, individual features described in relation to one embodiment can be used separately in other embodiments.

[0120] Figure 1 shows an exploded view of a battery housing 1 according to a first embodiment. The battery housing 1 comprises a first battery housing component 10, a second battery housing component 20, and a battery component holder 30, the battery component holder 30 having a number of housing cavities 31. Each housing cavity 31 has one inner wall 311, which extends from a first opening 312 (not shown in Figure 1) to a second opening 313 of each housing cavity 31.

[0121] In the assembled state of the battery housing 1, at least one battery component holder 30 is sandwiched between the first battery housing component 10 and the second battery housing component 20, with the first opening 312 (not shown in Figure 1) of the first battery housing component 10 and the second opening 313 of the second battery housing component 20 facing each other, and connected to them respectively. Thus, the battery component holder 30 is housed in the housing volume 2 of the battery housing 1 formed by the first battery housing component 10 and the second battery housing component 20. In the mounting position of the battery housing 1, for example in an automobile, starting from the ground, for example a road, the first battery housing component 10 is first, followed by the battery component holder 30, and finally the second battery housing component 20 are arranged vertically.

[0122] The first battery housing component 10 has a circumferential inner wall contour 12 that corresponds to the outer wall contour 32 of at least one battery component holder 30. When the battery housing 1 is assembled, at least one battery component holder 30 is connected to the first battery housing component 10 such that the outer wall contour 32 of at least one battery component holder 30 fits snugly to the inner wall contour 12 of the first battery housing component 10. In other words, the outer wall contour 32 of the battery component holder 30 is connected to the inner wall contour 12 of the first battery housing component 10 by shape coupling.

[0123] Figure 2 shows a cross-sectional view of the battery component holder 30 in the area of ​​the housing cavity 31 of the battery housing 1 according to a second embodiment. The inner wall 311 of the housing cavity 31 has at least one groove 40 extending from a first opening 312 to a second opening 313, so that when the battery component 3 is inserted into the housing cavity 31, one cooling fluid channel 50 is formed extending from the first opening 312 to the second opening 313 of the housing cavity 31, and this cooling fluid channel 50 is confined by the groove 40 and the battery component 3 (not shown in Figure 2).

[0124] The housing cavity 31 is formed as a through-opening within the battery component holder 30. The housing cavity 31 has a circular free cross-section. In other words, the housing cavity 31 is formed in a hollow cylindrical shape.

[0125] At least one groove 40 has a groove depth 41 that varies along its longitudinally extending portion 42, and at least one groove 40 in the region of the first opening 312 of the housing cavity 31 has a first groove depth 411, which is smaller than a second groove depth 412 in the region of the second opening 313 of the housing cavity 31. The groove depth 41 transitions continuously from the first groove depth 411 in the region of the first opening 312 to the second groove depth 412 in the region of the second opening 313.

[0126] The groove depth 41 of at least one groove 40 is the extension of the groove 40 that extends radially, starting from the center point of the first opening 312 and / or the center point of the second opening 313 of the housing cavity 31.

[0127] At least one groove 40 has a constant groove width 43 along its longitudinally extending portion 42. The groove width 43 is perpendicular to the longitudinally extending portion 42 of the groove 40 and perpendicular to the groove depth 41 of the groove 40.

[0128] The battery component holder 30 has a number of protrusions 33, each of which protrudes from the front surface 34 of the battery component holder 30. The protrusions 33 are formed in a cylindrical shape. The protrusions 33 are formed so as to create a connection between the battery component holder 30 and the first battery housing component 10 and / or the second battery housing component 20 by shape coupling and / or friction coupling.

[0129] Figure 3 shows a perspective view of the battery component holder 30 of the battery housing 1 in the region of the housing cavity 31 according to the third embodiment. The groove depth 41 changes in steps along the longitudinally extending portion 42 of the groove 40, from a first groove depth 411 in the region of the first opening 312 of the housing cavity 31 to a second groove depth 412 in the region of the second opening 313 of the housing cavity 31.

[0130] Each of the housing cavities 31 has an inner wall 311 with a compression rib 60 that extends from the first opening 312 toward the second opening 313, so that when the battery component 3 is inserted into the housing cavity 31, the compression rib 60 deforms and the battery component 3 is held in place within the housing cavity 31 without any play. The compression rib 60 is integrated and connected to the inner wall 311 of the housing cavity 31.

[0131] Figure 4 shows a diagram of the battery component holder 30 of the battery housing 1 according to a fourth embodiment, in a top view of each of the second openings 313 of the housing cavity 31. The battery component holder has a number of protrusions 33, which protrude from the front surface 34 of the battery component holder 30 and are integrated with and connected to the battery component holder 30. The protrusions 33 are formed as cylindrical tenons 35, and in the upper region of the tenon 35, the tenon 35 is conical. The tenon 35 is housed in a corresponding receiving groove (not shown in Figure 4) and is formed to form a clamp connection between the tenon 35 and the receiving groove. The receiving groove, not shown in Figure 4, is located within the second battery housing component 20 and is integrated with and connected to the second battery housing component 20.

[0132] The inner walls 311 of each housing cavity 31 of the battery component holder 30 have grooves 40 that are grouped together and arranged toward each other. Some inner walls 311 of some housing cavities 31 of the battery component holder 30 have grooves 40 that are grouped together in pairs 44. Some inner walls 311 of some housing cavities 31 of the battery component holder 30 have grooves 40 that are grouped together in pairs 45.

[0133] Each of the inner walls 311 of the housing cavity 31 has at least one stabilizer rib 61 that extends from the second opening 313 toward the first opening 312. The stabilizer rib 61 has a height extension along its longitudinal extension that starts at the second opening 313 and decreases toward the first opening 312.

[0134] Figure 5 shows a battery component holder 30 of the battery housing 1 according to the fifth embodiment in the region of the housing cavity 31, in a top view of the first opening 312 of the housing cavity 31. The inner wall 311 of the housing cavity 31 has compression ribs 60 that extend from the first opening 312 toward the second opening 313, and the compression ribs 60 are each integrally connected to the inner wall 311. The compression ribs 60 are equally spaced from one another.

[0135] Each groove 40 has a first groove depth 411 in the region of the first opening 312 of the housing cavity 31. The grooves 40 have a constant groove width 43 along the longitudinally extending portion 42 of the groove 40.

[0136] Figure 6 shows a perspective view of a battery component holder 30 inserted into a first battery housing component 10 of a battery housing 1 according to a sixth embodiment. The first battery housing component 10 is formed to have a structured internal support surface 11 with a number of projections 111, the number of projections 111 being positioned opposite a number of first openings 312 of each housing cavity 31 of at least one battery component holder 30, so that when battery components 3 are inserted into the housing cavity 31, these battery components 3 rest on each projection 111. The projections 111 are formed in a cylindrical shape and have a diameter smaller than the housing cavity 31 of the battery component holder 30.

[0137] The structured internal support surface 11 of the first battery housing component 10 has a number of connecting projections 112 that extend from the internal support surface 11 of the first battery housing component 10 into the housing volume 2 of the battery housing 1. The connecting projections 112 are formed in a cylindrical shape and are arranged adjacent to three projections 111 each.

[0138] Figure 7 shows a cross-sectional view of the battery 5 in the area of ​​the housing cavity 31 according to the seventh embodiment. A number of battery components 3, formed as battery cells 4, are inserted into the housing cavity 31 of the battery component holder 30. The battery cells 4 rest on projections 111 of the internal support surface 11 of the first battery housing component 10. The battery component holder 30 rests on connecting projections 112 of the internal support surface 11 of the first battery housing component 10.

[0139] The battery cells 4 inserted into the housing cavities 31 of the battery component holder 30 form a cooling fluid channel 50 together with the respective grooves 40 of each housing cavity 31 into which the battery cells 4 are inserted. The cooling fluid channel 50 extends from each first opening 312 of each housing cavity 31 to each second opening 313 of each housing cavity 31 and is confined by the respective grooves 40 and the battery cells 4 inserted into the housing cavities 31.

[0140] The cooling fluid channel 50 has one inlet opening 51 in the region of the first opening 312 of the containment cavity 31, and an outlet opening 52 in the region of the second opening 313 of the containment cavity 31.

[0141] During operation of the battery 5 according to the seventh embodiment, a cooling fluid, not shown in Figure 7, is present in the reservoir between the protrusions 111 of the internal support surface 11 of the first battery component 10, in a state close to a boiling curve. Due to the pressure within the cooling fluid, the cooling fluid rises against gravity through the inlet opening 51 of the cooling fluid channel 50, absorbing heat from the battery cell 4 in the process. The absorbed heat causes the cooling fluid to begin boiling and vaporize. The vaporized cooling fluid rises again along the cooling fluid channel 50, absorbing heat from the battery cell 4 in the process, and flows out from the outlet opening 52 of the cooling fluid channel 50 with a vapor content in the 50% range.

[0142] Figure 8 shows a perspective view of the battery housing 1 according to the eighth embodiment. The battery housing 1 has four cooling fluid inlets 70 for supplying cooling fluid into the housing volume 2 of the battery housing 1, and the four cooling fluid inlets 70 are fluidly connected to a first opening 312 of at least one battery component holder 30. The cooling fluid inlets 70 are formed within the first battery housing component 10. The cooling fluid inlets 70 are located within the lower region of the first battery housing component 10.

[0143] Figure 9 shows a perspective view of the battery housing 1 according to the eighth embodiment. The battery housing 1 has three cooling fluid outlets 80 for discharging cooling fluid from the housing volume 2 of the battery housing 1, and the cooling fluid outlets 80 are fluidly connected to the second openings 313 of at least one battery component holder 30. The cooling fluid outlets 80 are formed within the first battery housing component 10. The cooling fluid outlets 80 are located within the upper region of the first battery housing component 10.

[0144] Figure 10 shows a schematic diagram of a battery system 6 according to the ninth embodiment. The battery system 6 has a battery 5 comprising a battery housing 1 according to the eighth embodiment and a number of battery components 3 formed as battery cells 4, inserted into a housing cavity 31 of at least one battery component holder 30. Furthermore, the battery system 6 has a cooling fluid storage container 90, which is fluidly connected to at least one cooling fluid inlet 70 of the battery housing 1 via a fluid supply line 100 for supplying cooling fluid into the housing volume 2 of the battery housing 1. Finally, the battery system 6 has a heat exchanger device 110, which is fluidly connected to at least one cooling fluid outlet 80 using a fluid discharge line 120 for discharging cooling fluid from the housing volume 2 of the battery housing, and the heat exchanger device 120 is fluidly connected to the cooling fluid storage container 90 for supplying liquid cooling fluid using a storage fluid supply line 130. [Explanation of symbols]

[0145] 1 Battery Housing 2. Capacity (of the battery housing) 3 Battery Components 4 battery cells 5 batteries 6 Battery System 10. First battery housing component 11 Internal support surface (of the first battery housing component) 111 (Protrusion on the internal support surface) 112 Connecting projection (on the internal support surface) 12 Inner wall contour (of the first battery housing component) 20. Second battery housing component 30 Battery Component Holder 31 storage cavities 311 Interior wall 312 First opening 313 Second opening 32 (Outer wall contour of battery component holder) 33 (Protrusion of the battery component holder) 34 (Front view of the battery component holder) 35 mortise 40 grooves 41 Groove depth 411 First groove depth 412 Second groove depth 42 Longitudinal extension of the groove 43 groove width 44 (of grooves) in pairs 45 (a set of three grooves) 50 Cooling fluid channels 51 Inlet opening (of the cooling fluid channel) 52 Outlet opening (of the cooling fluid channel) 60 Compressed Ribs 61 Stabilizer Rib 70 Cooling fluid inlet 80 Cooling fluid outlet 90 Cooling fluid storage container 100 Fluid supply lines 110 Heat exchanger equipment 120 Fluid discharge line 130 Storage fluid supply line

Claims

1. A battery housing (1) for accommodating a number of battery components (3, 4), - First battery housing component (10), - The second battery housing component (20), - At least one battery component holder (30) having a number of housing cavities (31) for housing the battery components (3, 4) It has, - Each of the housing cavities (31) has one inner wall (311) extending from the first opening (312) of each housing cavity (31) to the second opening (313) of each housing cavity (31), - At least one of the battery component holders (30) is positioned between the first battery housing component (10) and the second battery housing component (20) in a sandwich configuration, with each first opening (312) of the first battery housing component (10) and each second opening (313) of the second battery housing component (20) facing each other, and connected to them respectively. In the battery housing (1), - Each of the housing cavities (31) has an inner wall (311) with at least one groove (40) extending from the first opening (312) to the second opening (313). When the battery components (3, 4) are inserted into the housing cavities (31), each cooling fluid channel (50) is formed extending from the first opening (312) to the second opening (313) of the housing cavity (31), and the cooling fluid channels (50) are confined by the groove (40) and the battery components (3, 4). A battery housing (1) characterized by the following features.

2. The battery housing (1) according to claim 1, characterized in that at least one of the grooves (40) has a groove depth (41) that varies along its longitudinally extending portion (42).

3. The battery housing (1) according to claim 2, characterized in that the groove depth (41) of at least one of the grooves (40) changes in steps along its longitudinally extending portion (42).

4. The battery housing (1) according to claim 2 or 3, characterized in that at least one of the grooves (40) in the region of the first opening (312) of the housing cavity (31) has a first groove depth (411), the first groove depth (411) being smaller than the second groove depth (412) in the region of the second opening (313) of the housing cavity (31).

5. The battery housing (1) according to claim 4, characterized in that the first groove depth (411) is 0.1 mm to 1 mm, preferably 0.3 mm, and the second groove depth (412) is 0.5 mm to 2 mm, preferably 0.8 mm.

6. The battery housing (1) according to claim 4 or 5, characterized in that at least one of the grooves (40) has a first groove depth (411) of 1 mm to 8 mm, preferably 2 mm, over the longitudinally extending portion.

7. The battery housing (1) according to any one of claims 1 to 6, wherein the inner wall (311) of each of the housing cavities (31) has at least one compression rib (60) extending from the first opening (312) toward the second opening (313), so that when the battery components (3, 4) are inserted into the housing cavity (31), the compression ribs (60) deform so that the battery components (3, 4) are held in place within the housing cavity (31) without any play.

8. The battery housing (1) according to claim 7, characterized in that at least one of the compression ribs (60) of the first opening (312) of the housing cavity (31) extends for a length of 5 mm to 15 mm, preferably 7 mm, in the direction of the second opening (313) of the housing cavity (31).

9. The battery housing (1) according to claim 7 or 8, characterized in that at least one of the compression ribs (60) has one height extension of 0.1 mm to 0.5 mm, preferably 0.3 mm.

10. - The first battery housing component (10) has a structured internal support surface (11) having a number of protrusions (111), - The numerous projections (111) are positioned opposite the numerous first openings (312) of each of the housing cavities (31) of at least one of the battery component holders (30), so that when the battery components (3, 4) are inserted into the housing cavities (31), these battery components (3, 4) rest on each of the projections (111). A battery housing (1) according to any one of claims 1 to 9, characterized in that

11. - The first battery housing component (10) has a circumferential inner wall contour (12) corresponding to the outer wall contour (32) of at least one of the battery component holders (30), - At least one of the battery component holders (30) is connected to the first battery housing component (10) such that the outer wall contour (32) of at least one of the battery component holders (30) fits snugly against the inner wall contour (12) of the first battery housing component (10). A battery housing (1) according to any one of claims 1 to 10, characterized in that

12. - The battery housing (1) has at least one cooling fluid inlet (70) for supplying cooling fluid to the storage volume (2) of the battery housing (1), - The battery housing (1) has at least one cooling fluid outlet (80) for discharging the cooling fluid from the storage volume (2) of the battery housing (1), - At least one of the cooling fluid inlets (70) is fluidly connected to each of the first openings (312) of at least one of the battery component holders (30), - At least one of the cooling fluid outlets (80) is fluid-connected to each of the second openings (313) of at least one of the battery component holders (30). A battery housing (1) according to any one of claims 1 to 11, characterized in that

13. The battery housing (1) according to claim 12, characterized in that at least one cooling fluid inlet (70) and / or at least one cooling fluid outlet (80) are formed within the first battery housing component (10).

14. A battery (5) comprising a battery housing (1) according to any one of claims 1 to 13, and a number of battery components (3, 4) formed as battery cells (4) and / or battery modules, inserted into the housing cavity (31) of at least one of the battery component holders (30).

15. - A battery (5) comprising a battery housing (1) according to claim 12, and a number of battery components (3, 4) formed as battery cells (4) and / or battery modules, inserted into the housing cavity (31) of at least one of the battery component holders (30), - A cooling fluid storage container (90) is fluid-connected to at least one of the cooling fluid inlets (70) via a fluid supply line (100) for supplying cooling fluid to the storage volume (2) of the battery housing (1), - A heat exchanger device (110) is fluidly connected to at least one of the cooling fluid outlets (80) using a fluid discharge line (120) for discharging the cooling fluid from the storage volume (2) of the battery housing (1) and A battery system (6) having a heat exchanger device (110) which is fluidly connected to a cooling fluid storage container (90) for supplying a liquid cooling fluid.

Images