Flexible power supply unit

Abstract

Flexible power supply unit (2) comprising a housing (4) with an integrated modular battery storage unit (34) with a battery compartment (36) for receiving at least one battery module carrier (38), modular power electronics (28) integrated into the housing (4) with an electronics compartment (26) spatially separated from the battery compartment (36) for receiving at least one power electronics module (30), and an air conditioning unit (32) with a cooling circuit coupled thereto for air conditioning the at least one battery module carrier (38) during operation, - wherein the at least one battery module carrier (38) has a connection (42) for cooling-related coupling to the cooling circuit, - wherein the at least one battery module carrier (38) has an electrical connection (44) for electrical coupling and interconnection of the battery module carriers (38) and the power electronics (28), - wherein the housing (4) has a first mounting opening on a rear side (8) as access to the battery compartment (36), - wherein the connections (42, 44) for cooling and electrical coupling are arranged on a common module carrier side of the at least one battery module carrier (38) facing the rear side (8), and - wherein the housing (4) has a second mounting opening on a front side (6) opposite the rear side (8) as access to the electronics compartment (26).

Description

[0001] The invention relates to a flexible power supply unit. The invention further relates to the use of such a power supply unit as a flexible charging station for charging an electrically powered or motorized vehicle.

[0002] Electrically powered or driven motor vehicles, such as electric or hybrid vehicles, typically have an electric motor as their drive unit, which is connected to an internal vehicle electrical system for its power supply. Such electrical systems are usually powered by an energy storage device, for example, an electrochemical battery.

[0003] In this context, an electrochemical battery refers specifically to a so-called secondary battery (or auxiliary battery) of a motor vehicle, in which depleted chemical energy can be replenished by means of an electrical (re)charging process. Such vehicle or traction batteries are primarily designed as electrochemical accumulators, for example, as lithium-ion batteries.

[0004] In the following, the term "charging an electrically or electromechanically powered or propellable motor vehicle" refers in particular to the (re)charging of such a secondary (traction) energy storage device of the motor vehicle with electrical energy.

[0005] To charge a vehicle or its battery, it is possible, for example, to connect the battery to an electrical supply point (charging point) or to an electrical grid using a charging cable. Charging points are typically provided by charging stations or charging columns, which also serve as electric vehicle charging points or power supply units. These charging stations usually have a charging interface with a charging cable, to which a charging plug is attached at the free end. This plug is inserted into a corresponding charging socket on the vehicle and operated by a user via an associated control unit. For example, the charging interface is located on the front of the charging column, facing the road or the user, allowing for easy positioning of the vehicle.

[0006] Such charging stations or charging columns are typically connected to an electrical supply network, in particular a public low-voltage network. The charging column often incorporates power electronics for voltage conversion and / or voltage adjustment to adapt the supply network voltage to a desired charging voltage or voltage level.

[0007] From DE 10 2014 112 799 A1, a mains-connected, stationary charging station is known in which a control device of the power electronics is designed as a rectangular control module, which is arranged in a housing of the charging station. A functional module is also installed in the housing, which is designed, for example, as a parcel box module, a fire extinguishing module, a compressor module, or an input module.

[0008] Due to the required connection to the power grid, grid-connected charging stations are generally stationary, meaning they are fixed, permanently installed, or non-mobile. This means that the charging stations are mounted at a predetermined location and can only be dismantled and reinstalled elsewhere with considerable effort.

[0009] Such charging stations can also be equipped with a battery storage system and power and control electronics as an additional or auxiliary electrical energy storage device. The charging station components are typically installed separately within a housing. The battery storage system is usually located in a separate unit within the housing. This makes the installation and assembly of such charging stations comparatively complex and expensive, as both the charging station housing and the battery storage system must be installed.

[0010] German patent application DE 10 2017 215 882 A1 discloses a flexible charging station comprising a housing and an integrated battery storage system. Thanks to the battery storage, the charging station is essentially self-sufficient or independent of a power grid and is suitable and equipped for charging an electrically powered or motorized vehicle. This makes the charging station flexible, meaning it can be relatively easily and reversibly assembled and disassembled at different locations. The charging station also features a connection to a power grid (plug-in) for charging the internal battery storage system.

[0011] For such a flexible charging station, it is necessary that the power electronics and the battery storage system are housed in the charging station's casing in the most compact way possible. Furthermore, simple manufacturing and maintenance of the charging station, the power electronics, and / or the battery storage system are desirable.

[0012] German patent DE 10 2017 205 232 A1 describes a mobile, interchangeable battery-powered charging station comprising a plug-in device for at least one interchangeable battery, a charging unit with a charge controller, a connection cable for a motor vehicle, and a billing unit. The charging station is designed to charge an electrically powered motor vehicle in a single charging process using energy from the interchangeable batteries inserted in the plug-in device.

[0013] From WO 2016 / 203 383 A1, a mobile charging station is known which comprises a support structure, an electrical charging circuit for the battery of an electric vehicle supported by the support structure, and an output connector. The output connector can be connected to the electric vehicle. The charging station has a removable battery pack and coupling / uncoupling means for the removable battery pack.

[0014] DE 10 2012 209 744 A1 discloses a battery storage system, wherein a housing of the battery storage system has a plurality of receiving compartments, each suitable for receiving a battery module, and at least one partition wall is provided in the housing by means of which the housing is divided longitudinally into at least a first zone and a second zone thermally separated from the first zone.

[0015] A charging station for an electric vehicle charging point is known from DE 10 2017 217 879 A1. The charging station comprises power electronics, a battery, air cooling for the power electronics and the battery respectively, a first and second heat exchanger, and an underground liquid cooling system, wherein the liquid cooling system is thermally coupled to the air cooling system of the power electronics via the first heat exchanger and to the air cooling system of the battery via the second heat exchanger.

[0016] German patent application DE 10 2018 102 566 A1 describes a charging system for charging an electric vehicle. The charging system comprises a charging station and at least one first charging point, which has one or more charging plugs. The charging system further includes a buffer storage device for storing energy, a grid connection for supplying energy to the charging station, and a switching device configured to direct the energy flow from the buffer storage device and / or from the grid connection to the first charging point.

[0017] The invention is based on the objective of providing a particularly suitable flexible power supply unit. In particular, a power supply unit that is as flexible as possible with regard to different applications and is as easily scalable as possible is to be provided. Furthermore, the battery storage and / or power electronics of the power supply unit should be as compact as possible and easy to install. The invention is also based on the objective of providing a particularly suitable use for such a power supply unit.

[0018] With regard to the power supply unit, the problem is solved according to the invention by the features of claim 1, and with regard to the use by the features of claim 8. Advantageous embodiments and further developments are the subject of the dependent claims. The advantages and embodiments mentioned with regard to the power supply unit are also transferable mutatis mutandis to the use and vice versa.

[0019] The flexible power supply unit according to the invention comprises a housing with an integrated modular battery storage system and a battery compartment for accommodating at least one battery module carrier. In other words, the power supply unit has a modularly constructed battery storage system, wherein the battery compartment, as the designated installation space, is modularly equipped or can be equipped with at least one battery module carrier. This results in a particularly suitable flexible power supply unit.

[0020] In the following, the term "power supply system" refers specifically to an electrical supply system in which an electrical consumer is supplied with electrical power or electrical energy via a charging interface. Preferably, the consumer is charged with electrical energy in this process.

[0021] In the following, a "flexible power supply system" is understood to mean a mobile or movable power supply system, i.e., one that is not permanently installed or stationary. This means that the power supply system according to the invention is essentially designed as an island or off-grid system, i.e., as a grid-independent, self-sufficient island system.

[0022] According to the invention, the battery storage system of the power supply unit is modular, i.e., designed according to a building block or modular system principle. The battery compartment is advantageously equipped with a number of battery module carriers in a modular fashion. This means that the battery compartment has a sufficiently large space to accommodate a number of battery module carriers, for example, stacked or arranged side by side. This allows the battery size, i.e., the capacity, power, or energy content, of the modular battery storage system to be flexibly, i.e., scalably or variably, individually adapted to the respective application of the power supply unit.

[0023] This means that the modular battery storage system, or power supply unit, can accommodate different battery sizes or power levels depending on the number of battery module carriers used or installed. This makes the power supply unit particularly flexible and adaptable to various applications and requirements. In particular, it is possible, for example, to equip or retrofit a flexible power supply unit, already installed at one location, with additional battery module carriers on-site as needed. The battery module carriers are designed to be modular, ensuring that the power supply unit's functionality remains independent of the number of battery module carrier systems.

[0024] The at least one battery module carrier is specifically designed to be interchangeable within the battery compartment. This makes it possible, for example, to replace discharged battery module carriers, in which the stored electrical energy of the battery modules has been essentially consumed, with new, charged battery module carriers without having to move the entire power supply unit.

[0025] For example, the flexible power supply unit is designed as a generator for use on construction sites or at large events. In a preferred application, the flexible power supply unit is designed in particular as a charging system, for example as a charging station, for charging an electrically powered or motorized vehicle, in particular an electric or hybrid vehicle.

[0026] Each battery module carrier comprises a number of electrically coupled or interconnected battery modules or battery cells. Depending on the application or use of the flexible power supply unit, the battery module carrier may contain, for example, four, six, twelve, or more interconnected battery modules. This further improves the scalability and flexibility of the power supply unit with regard to individual adaptation to different applications and requirements.

[0027] According to the invention, the housing has a (first) mounting opening on its rear side, providing access to the battery compartment. The rear side of the housing is understood to be, in particular, the side facing away from a street or a user when the power supply unit is in use. The rear mounting opening allows for particularly easy access to the at least one battery module carrier within the battery compartment for manufacturing, assembly, and servicing purposes, such as maintenance or repair. The battery compartment is thus essentially designed like a control cabinet.

[0028] Preferably, the mounting opening is closed with a door or a removable cover, which can be locked or bolted, thus advantageously and easily preventing unauthorized access to the battery compartment or the battery module carriers. In particular, this provides theft protection for the battery storage system.

[0029] According to the invention, the battery module carriers inserted or mounted in the battery compartment have external connections, i.e., those facing the mounting opening, for example for a cooling circuit or an air conditioning unit, and electrical connections for interconnection. The orientation of these connections on the rear side, i.e., on the side facing the mounting opening, allows for particularly simple assembly, disassembly, and interconnection of the battery module carriers.

[0030] The conjunction “and / or” is to be understood here and in the following as meaning that the features linked by means of this conjunction can be both common and alternative to each other.

[0031] According to the invention, modular power electronics are integrated into the housing. The power electronics include a space for at least one power electronics module. This module advantageously incorporates power electronics for voltage conversion and / or voltage adjustment of an electrical voltage supplied by the power supply unit. In other words, the voltage level supplied by the power supply unit can be adjusted and / or regulated by means of the power electronics module, so that, for example, a suitable charging voltage can be provided for a connected load.

[0032] In this configuration, the flexible power supply unit thus features modular power electronics in the form of power electronics modules. This means that preferably both the battery storage and the power electronics of the power supply unit are designed as modular systems. In other words, the power electronics are scalable, so that more or fewer power electronics modules are used and installed depending on the application.

[0033] Ideally, the function of the power supply unit is independent of the number of power electronics modules used. For example, in a power supply unit designed as a charging station, the (electrical) power provided by a charging interface to a connected electrically powered or driveable vehicle, as well as the power for recharging the battery module carriers, is independent of the number of power electronics modules.

[0034] According to the invention, the modular battery storage system and the modular power electronics have two distinct and spatially separated installation spaces within the housing. For example, the battery storage system is located in a lower, i.e., bottom-side, area of ​​the housing, and the power electronics and / or control electronics are installed in an upper, i.e., vertically above, the battery storage system. Preferably, the battery storage system and the power electronics are installed in two horizontally adjacent installation spaces. The spatial and functional separation of the electronics installation space and the battery installation space enables particularly efficient integration of the systems into the power supply unit housing. In particular, this allows for a particularly efficient use of the available installation space, resulting in a particularly compact packaging design.

[0035] According to the invention, the housing has a (second) mounting opening on a front side, providing access to the electronics compartment. A front side of the housing is understood to be, in particular, a side facing the street or the user when using the power supply unit, i.e., opposite the rear side. The electronics compartment and the battery compartment are therefore preferably accessible from opposite sides of the power supply unit. This allows for particularly easy access during manufacturing and servicing.

[0036] Preferably, the second mounting opening is also closed with a door or a removable cover, which can be locked or bolted, thus conveniently and easily preventing unauthorized access to the electronics compartment or the power electronics modules. In particular, this provides theft protection for the power electronics. The cover or door of the second mounting opening can, for example, be equipped with an external optical display unit, such as a screen, monitor, or display facing the environment. This display unit can show, for example, illuminated banners, infotainment, or advertising content.

[0037] In a particularly preferred embodiment, the battery compartment is designed as a slide-in rack, and the at least one battery module carrier is designed as a slide-in slot for this rack. In other words, the battery compartment is designed as a mounting frame or rack with multiple compartments into which a respective battery module carrier can be inserted or slid. This results in particularly simple and efficient assembly and maintenance of the modular battery storage system. Furthermore, this design enables a particularly space-efficient arrangement of the battery module carriers within the battery compartment, thus achieving a particularly space-saving packaging solution.

[0038] According to a suitable design, the battery compartment is equipped with guide contours for the linear guidance of at least one battery module carrier along an assembly or insertion direction. The battery module carriers are preferably guided by means of the guide contours in a form-fitting manner, so that no unwanted slippage of the battery module carriers from the battery compartment is possible. The guide contours thus act as an assembly or positioning aid when inserting or removing the battery module carriers into or from the battery compartment.

[0039] The term "positive locking" or "positive locking connection" between at least two interconnected parts is understood here and in the following to mean, in particular, that the cohesion of the interconnected parts in at least one direction is achieved either through a direct interlocking of the contours of the parts themselves or through an indirect interlocking via an additional connecting element. The "blocking" of mutual movement in this direction is thus due to the form.

[0040] In one possible design, each battery module carrier is provided with raised retaining contours on opposite end faces, which engage at least partially with the guide contours or at least partially engage behind them. This ensures particularly reliable, stable, and dependable guidance of the battery module carriers within the battery compartment, thus enabling particularly easy assembly and disassembly.

[0041] In a preferred embodiment, the guide contours are designed as a number of guide rail pairs, with each battery module carrier being guided or guided by one of these guide rail pairs. Each pair of guide rails has two guide rails arranged opposite each other within the battery installation space, in which an inserted or slid-in battery module carrier is preferably guided in the same direction. Each pair of guide rails is thus designed as a compartment for receiving a battery module carrier. The compartments can, for example, be arranged horizontally side by side or stacked vertically on top of each other. Preferably, the insertion frame is thus designed as a rail system. The rail system enables particularly easy and efficient insertion and removal of the battery module carriers, which is especially advantageous in the event of servicing.

[0042] In an alternative design, the guide contours are configured as a roller system. This means that the battery compartment and / or the battery module carriers that can be inserted into it are equipped with rollers. This enables particularly low-friction and therefore force-reduced assembly and disassembly of the battery module carriers.

[0043] An additional aspect of the invention provides for a power supply connection for the electrically conductive coupling of a load connected to the power supply unit and / or the at least one battery module carrier to a power supply network. In other words, the power supply unit can be connected to an electrical power supply network, in particular a low-voltage network, i.e., to an external power supply. This means that the power supply unit is designed as a plug-in system that can be connected to the power supply network as needed. This makes it possible, for example, to charge the internal battery storage of the power supply unit via the power supply network. The mounted battery module carriers can thus be charged with a constant (re-)charging current without having to remove the battery module carriers from the housing.Such charging of the battery module carriers is also possible, in particular, when simultaneously charging or supplying a connected consumer.

[0044] In a suitable upgrade, the power supply connection is coupled with a transformer for galvanic isolation of the power supply unit from the mains supply. In other words, galvanic isolation from a connected mains or low-voltage network is provided. The transformer reliably isolates the power supply unit from the mains supply while simultaneously enabling the simultaneous charging of connected loads and the internal battery storage.

[0045] In an alternative form of further training, an electrical circuit can be provided instead of the transformer, which galvanically isolates or shuts off access to the connected supply network when a connected consumer is to be charged.

[0046] In a preferred application, the power supply unit described above is used as a flexible charging station for charging an electrically powered or motorized vehicle, in particular an electric or hybrid vehicle. This results in a particularly suitable, flexible charging station.

[0047] The charging station advantageously has at least one charging interface for connection to the motor vehicle. In one conceivable embodiment, the charging interface is arranged on a side surface of the housing, i.e., a vertical surface of the housing oriented perpendicular to the front and back. A display unit and / or a user interface can be provided on this housing surface, allowing a user to monitor, control, and / or regulate the charging process.

[0048] The charging interface is, for example, a charging cable with a free-end charging plug, such as a Type 2 charging plug. Preferably, the charging station has a number of such charging interfaces, for example, four or six. Preferably, a suitable or adapted number of battery carrier modules and / or power electronics modules for the respective number of charging interfaces are mounted in the housing or in the battery compartment and in the electronics compartment.

[0049] The number and power of the charging interfaces are variable and depend on the installed power electronics or power electronics modules. For example, different combinations of the number and power of the charging interfaces are possible in the charging station or power supply unit according to the invention, such as four charging interfaces with 50 kW DC each (kW: kilowatt, DC: direct current), or two charging interfaces with 150 kW DC each, or two charging interfaces with 25 kW DC each and two charging interfaces with 100 kW DC each.

[0050] Exemplary embodiments of the invention are explained in more detail below with reference to a drawing. The drawing shows: Fig. 1 In perspective view, a flexible power supply unit with a housing, looking at a front, Fig. 2. In perspective view, the power supply unit without the housing, looking at a front view. Fig. 3. In perspective view, the power supply unit without the housing in a partially disassembled state, with a battery compartment and a battery module carrier, looking at the rear. Fig. 4 in perspective view Holding contours of the battery module carrier in section IV according to Fig. 3, Fig. 5 in perspective view Guide contours of the battery compartment in section V according to Fig. 3, and Fig. Figure 6 shows a schematic and simplified representation of the power supply unit when used as a charging station for charging an electrically powered or motorized vehicle.

[0051] Corresponding parts and sizes are always marked with the same reference symbols in all figures.

[0052] In the Fig. Figure 1 shows a flexible power supply unit 2 designed as a charging station. The power supply unit 2 has a housing 4 with a front 6 and a back 8, as well as two side surfaces 10 and a top surface 12. A charging interface 14 with a charging cable 16 and a free-end charging plug 18 is arranged on one side surface 10. The charging plug 18 is connected to a corresponding charging socket 19 of an electrically powered or motorized vehicle 20 ( Fig. 6), in particular an electric or hybrid vehicle, pluggable and electrically conductively connectable.

[0053] The charging cable 16 is inserted into the charging plug 18 at one end opposite the other. Fig. 2 the interior of the housing 4 shown in more detail. The charging plug 18 is arranged in a receptacle 21 in the unused state, at least on the contact side, so that on the one hand easy gripping of the charging plug 18 is made possible, and on the other hand the contacts of the charging plug 18 are protected from dirt and external influences, such as weather influences.

[0054] In an upper area of ​​the front 6, an optical display unit 22 in the form of a display or screen or monitor is arranged, on which, for example, light banners, infotainment or advertising content can be displayed or shown.

[0055] As in the Fig. 2 and the Fig. As can be seen in Figure 3, the power supply unit 2 has a frame 24 inside the housing 4 in which the components of the power supply unit 2 are arranged.

[0056] The front panel 6 can be designed as a hinged door or cover that closes a front mounting opening of the housing 4. Behind the front panel 6, or the mounting opening, there is – as is particularly evident in Fig. 2 is evident - an electronics assembly space 26 for accommodating modular power electronics 28 is arranged. In the Fig. In the embodiment shown in Figure 2, the power electronics 28 comprises eight individual power electronics modules 30, which are only provided with reference numerals in the figures as examples.

[0057] In the upper area of ​​the frame 24, an air conditioning unit 32 of the power supply unit 2 is arranged according to the invention, with which a modular battery storage unit 34 is connected during operation ( Fig. 3) is air-conditioned.

[0058] The following is the structure of the battery storage system 34 based on the Fig. 3 explained in more detail.

[0059] The battery storage unit 34 of the power supply unit 2 is modular, i.e., designed according to a building block or modular system principle. The battery storage unit 34 has a rear-opening battery compartment 36, which can be modularly equipped with a number of battery module carriers 38. In the illustrated embodiment, the battery compartment 36 can be equipped with four battery module carriers 38, wherein in the Fig. Figure 3 shows, by way of example, only a battery module carrier 38 in a disassembled state.

[0060] The battery module carrier 38 is particularly interchangeable and can be inserted into the battery compartment 36. The battery module carrier 38 has a number of electrically coupled or interconnected battery modules 40. In the embodiment shown, the battery module carrier 38 has, in particular, twelve interconnected battery modules 40, which are only identified by reference numerals in the figures by way of example.

[0061] Suitablely, the rear side 8 of the housing 4 is provided with a lockable mounting opening (not shown in detail) as access to the rear-opened battery compartment 36.

[0062] According to the invention, the battery module carrier 38 has a connection 42 for the cooling-related coupling of the battery module carrier 38 to the air conditioning unit 32 or to a cooling circuit coupled thereto. The battery module carrier 38 further has an electrical connection 44 for the electrical coupling and interconnection of the battery module carrier 38 and the power electronics 28. According to the invention, the connections 42 and 44 are arranged on a side of the battery module carrier 38 facing the rear 8 of the housing 4, so that they are easily accessible via the rear mounting opening during assembly or servicing.

[0063] As in the Fig. As is relatively clearly evident in Figure 3, the battery compartment 36 is designed as a slide-in frame and the battery module carrier 38 as a slide-in insert provided for this purpose. The battery compartment 36 has guide contours 46 by means of which the battery module carrier 38 is guided or can be guided linearly along a mounting or insertion direction 48.

[0064] The guide contours 46 of the battery compartment 36 are designed as four horizontally arranged pairs of guide rails, each pair of guide rails being designed to guide and support a battery module carrier 38. Each pair of guide rails has two guide rails 50 arranged opposite each other in the battery compartment 36, in which an inserted or slid-in battery module carrier 38 is preferably guided in the same direction. The pairs of guide rails are thus designed as four compartments for receiving four battery module carriers 38. An example is shown in the Fig. 3 only the guide rails 50 of a pair of guide rails are marked with a reference symbol.

[0065] The battery module carrier 38 is provided on the opposite end faces with upright retaining contours 52, which, when the battery module carrier 38 is inserted into the battery installation space 36, engage at least partially in a form-fitting manner in the guide contours 46 or at least partially engage behind them.

[0066] The one in Fig. The retaining contours 52 shown in detail in section 4 are represented here as a pair of two elongated, approximately L-shaped retaining strips 54. The retaining strips 54 are guided parallel to each other on the respective narrow side of the battery module carrier 38 and extend, for example, over its entire width or narrow side length. The length of the retaining strips 54, or the retaining contours 52, essentially corresponds to the length of the guide rails 50.

[0067] The in Fig. The 5 guide rails 50 shown in more detail are approximately U-shaped in cross-section, with inwardly directed horizontal extensions 56b provided at the free ends of the vertical U-legs 56a, which run parallel to the horizontal U-leg 56c.

[0068] When the battery module carrier 38 is inserted, the horizontal L-legs of the retaining strips 54 engage section by section behind the undercut formed by the extensions 56b, so that the battery module carrier 38 is guided and held in a form-fitting manner on the guide rails 50.

[0069] The Fig. Figure 6 shows in a schematic and simplified representation the power supply unit 2 when used as a charging station for charging the electrically powered or driveable motor vehicle 20 or a vehicle or traction battery 57 of the motor vehicle 20.

[0070] In this embodiment, the power supply unit 2 has an electrical supply connection or network connection 58 for coupling to an electrical supply network 60. The supply network 60 is, for example, a three-phase 230 V low-voltage network.

[0071] The supply connection 58 is coupled to a transformer 62 for galvanic isolation of the power supply unit 2 from the supply network 60.

[0072] The supply connection 58 allows the consumed electrical energy of the internal battery storage 34, in particular the consumed electrical energy of the battery modules 40 of the mounted or installed battery module carriers 38, to be recharged via the supply network 60 without replacing the battery module carriers 38 of the battery storage 34. Such charging of the battery module carriers 38 is also possible, in particular, when simultaneously charging or supplying a connected motor vehicle 20.

[0073] The claimed invention is not limited to the embodiments described above. Rather, other variants of the invention can also be derived by a person skilled in the art within the scope of the disclosed claims without departing from the subject matter of the claimed invention. In particular, all individual features described in connection with the various embodiments can also be combined in other ways within the scope of the disclosed claims without departing from the subject matter of the claimed invention.

[0074] For example, it is also conceivable that the guide contours 46 and / or holding contours 52 are designed as a roller system. Reference symbol list 2 Power supply units 4 cases 6 Front 8 Back 10 side surface 12 ceiling area 14 Charging interface 16 charging cables 18 charging plugs 19 Charging socket 20 motor vehicles 21 recording 22 Display unit 24 frame 26 Electronics installation room 28 Power Electronics 30 Power electronics module 32 air conditioning unit 34 battery storage units 36 Battery compartment 38 battery module carriers 40 battery modules 42, 44 connection 46 Leadership contour 48 Mounting direction 50 guide rail 52 Holding contour 54 retaining strip 56a, 56c U-leg 56b Extension 57 Vehicle battery 58 Supply connection 60 Supply network 62 Transformer

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