Housing system of battery disconnect unit and battery disconnect unit

Abstract

The invention relates to a housing system of a battery disconnecting unit (1), comprising a first housing element (21) and a second housing element (22), which are mechanically connected to each other by means of a releasable connection (4) in such a way that the first housing element (21) and the second housing element (22) are connected to each other. The housing system (10) comprises a first housing element (21) and a second housing element (22) such that a first side (31) of the first housing element (21) and a second side (32) of the second housing element (22) are designed to rest against each other at least partially in a ground-like manner, the housing system (10) further comprising at least one electrical and / or electronic interface (7), the electrical and / or electronic interface enables the first housing element (21) and the second housing element (22) to be electrically and / or electronically connected to each other.

Description

TECHNICAL FIELD

[0001] The invention relates to a housing system for a battery disconnect unit according to the category of the independent claims. The battery disconnect unit is also subject of the invention. BACKGROUND

[0002] Battery disconnect units, which can also be denoted in English as Battery Disconnect Unit or simply BDU, are known from the prior art, which are used to switch on and switch off a battery of an electric vehicle in particular. Such battery disconnect units comprise in particular a fuse and a relay, an initiating fuse and a relay or a fuse, an initiating fuse and a relay. Furthermore, such battery disconnect units can comprise in addition an interface for fast charging; so-called direct current charging. Furthermore, such battery disconnect units usually also comprise a battery control unit, such as a BCU, and / or a control unit, such as a CSC.

[0003] In electric vehicles, so-called on board chargers, OBC for short, are furthermore known, with which a battery can be charged with a charging cable through the power grid usually with 11 kW or 22 kW; so-called alternating current charging.

[0004] In electric vehicles, transformers are furthermore known, so-called high-voltage DC / DC converters, with which a voltage of 12 volts can be provided for use in the on-board power supply network.

[0005] The on-board charger and the high-voltage DC / DC converter in particular can be provided as one unit in a common housing and are referred to as CharCon (charging-conversion module).

[0006] The components mentioned, i.e. in particular the battery disconnect unit and the CharCon, are usually jointly installed in a housing, so that on the vehicle side the interfaces are reduced and on the other side only one component has to be handled.

[0007] Furthermore, the electrical and electronic components have to be cooled due to the relatively large currents, for which purpose connections to a coolant circuit are known from the prior art. SUMMARY

[0008] The housing system for a battery disconnect unit having the features of the independent claims provides the advantage that a more simple design of the housing system for a battery disconnect unit can be provided.

[0009] To this end, a housing system of a battery disconnect unit is provided according to the application. Such a housing system comprises a first housing element and a second housing element, which are mechanically connected to one another by means of a releasably configured connection in such a way that a first side of the first housing element and a second side of the second housing element are configured to at least partially lie flat against one another. Preferably, they lie flat against one another overall. Furthermore, the housing system comprises at least one electrical and / or electronic interface, which electrically and / or electronically connects the first housing element and the second housing element to one another.

[0010] The measures listed in the dependent claims make it possible to achieve advantageous refinements and improvements of the device specified in the independent claim.

[0011] It is noted here that the relatively large housing known from the prior art can be dispensed with. In particular, it is possible in an advantageous manner to dispense with the need to handle the relatively large housing in each machining step. Furthermore, it is possible to reduce the machining complexity. Furthermore, particular advantages are provided, for example, in the case of a fault situation, maintenance can be significantly simplified.

[0012] It is furthermore noted that the design of the electrical and / or electronic interface within the housing system provides particular advantages, in that all contacts within the housing system can be made available in a protected manner.

[0013] It is furthermore noted here that the at least partial lying flat of the first side of the first housing element at the second side of the second housing element can be referred to as a mechanical interface. Here, the mechanical interface can surround a seal for sealing the electrical and / or electronic interface.

[0014] It is advantageous if the first housing element and the second housing element are connected to one another in a force-locking and / or form-locking manner. Preferably, the force- locking and / or form-locking connection can be configured by means of a screw connection. An advantageously repeatedly couplable and releasable connection is thereby configured, which not only simplifies the initial installation but also the maintenance. Such a screw connection can be configured not only within the interior cavity of the first housing element or of the second housing element, but also outside the interior cavity of the first housing element or of the second housing element.

[0015] The screw connection configured in the interior space, if necessary, is sealed correspondingly. For the screw connection in the interior space of the first housing element or of the second housing element, an opening of at least one cover element of one of the two housing elements is required. Such a cover element can here have a contact system, so that the current guidance can be interrupted in the opening of the respective cover element. The necessity of an opening of at least one cover element thus preferably also enables the formation of an operating protection.

[0016] The screw connection configured outside the interior space can here be configured, for example, in a housing wall of the first housing element or of the second housing element.

[0017] A combination of a screw connection in the interior and a screw connection at the exterior can also be realized, in particular.

[0018] The screw direction is here preferably also in correspondence with the joining direction of the two housing elements. It goes without saying that a screw direction at another angle can also be envisaged.

[0019] The first housing element and / or the second housing element can furthermore comprise a plurality of orientation pins, which can each be embedded in an opening of the respective other housing element, so that a more reliable positioning of the two housing elements relative to one another can be provided. In particular, a misalignment between the two housing elements can be reduced.

[0020] In addition to the configuration of the screw connection, the two housing elements can also be connected by means of a tongue-and-groove system.

[0021] It is expedient to configure the releasably configured mechanical connection only in the common interior of the first housing element and of the second housing element. This is to be understood in particular as meaning that the releasably configured mechanical connection cannot be reached from the exterior of the housing system of the battery disconnect unit without the opening of a cover element or is substantially completely surrounded by the housing walls of the two housing elements. In particular, such a connection can be configured as a flange connection. The opening of at least one cover element is required for the configuration of said connection.

[0022] It is advantageous if the first housing element comprises a first cover element and the second housing element comprises a second cover element. The respective cover element is here configured for closing the respective housing element in a reversibly configured manner. In particular, the first cover element serves for closing the first housing element and the second cover element serves for closing the second housing element. Thereby, not only the initial installation but also the maintenance is simplified. Furthermore, corresponding assemblies can thereby be introduced into the respective housing element.

[0023] It is particularly expedient if the first housing element and / or the second housing element comprises at least one mechanical interface which is configured for mechanical connection to the vehicle. Preferably, the first housing element comprises a plurality of first mechanical interfaces, in particular two first mechanical interfaces, and the second housing element comprises a plurality of second mechanical interfaces, in particular two second mechanical interfaces. Furthermore, it is particularly preferred that a mechanical interface is arranged directly adjacent to a mechanically configured connection between the first housing element and the second housing element. Thereby, the bending load can be reduced. For example, the mechanically configured connection can be arranged particularly preferably directly between a first mechanical interface of the first housing element and a second mechanical interface of the second housing element.

[0024] It is particularly expedient if the housing system furthermore comprises at least one hydraulic interface which connects the first housing element and the second housing element in a fluid-conducting manner with one another. In particular, the hydraulic interface is arranged in the region of the bottom of the respective housing element, which is arranged, for example, opposite the respective cover element. In particular, the at least one hydraulic interface can also be configured outside the inner cavity, so that a sealing can preferably be dispensed with. In particular, in the event of a fault, for example in the event of a leak, the tempering fluid cannot enter the inner cavity.

[0025] Furthermore, the hydraulic interface offers the particular advantage that additional connections, for example by means of tubes or hoses, can be dispensed with.

[0026] The already described orientation pin or opening is preferably arranged directly adjacent to the hydraulic interface, so that relatively small tolerances can be provided here.

[0027] In an advantageous manner, a first tempering structure is configured within the first housing element, which is configured to be able to be flowed through by the tempering fluid, and a second tempering structure is configured within the second housing element, which is configured to be able to be flowed through by the tempering fluid. Here, the first tempering structure and the second tempering structure are connected to one another in a fluid-conducting manner by means of the at least one hydraulic interface.

[0028] Thereby, a reliable tempering can be configured. Furthermore, the tempering can be reliably configured within the housing system, wherein only one connection for the entry of the tempering fluid and only one connection for the exit of the tempering fluid can be configured, which can be adapted to the requirements of the interface, for example on the vehicle side.

[0029] Furthermore, the housing can comprise a plurality of tempering structures, which can be flowed through in parallel and / or in series.

[0030] It is preferred that the first housing element and / or the second housing element comprises a high-voltage interface and / or a low-voltage interface. Such a high-voltage interface and / or low-voltage interface serves as an electrical interface for a high-voltage connection and / or a low-voltage connection as well as a high-voltage contact and / or a low-voltage contact and can be configured at a desired location. It is also possible that an electrical and / or electronic interface is configured at a desired location.

[0031] It is noted that the first housing element and the second housing element are each configured as an aluminum die-cast housing.

[0032] A battery disconnect unit having the housing system just described is also the subject of the present application, wherein the battery disconnect unit, the control unit and / or the control unit are accommodated in the first housing element and the transformer is accommodated in the second housing element. BRIEF DESCRIPTION OF DRAWINGS

[0033] Embodiments of the application are shown in the drawings and explained in more detail in the following description.

[0034] wherein:

[0035] Figure 1 a housing system of a battery disconnect unit is shown in a schematic top view according to an embodiment of the application,

[0036] Figure 2 a housing system of a battery disconnect unit is shown in a schematic side view according to an embodiment of the application,

[0037] Figure 3 a mechanical interface of a housing system of a battery disconnect unit is shown in a sectional view according to an embodiment of the application, and

[0038] Figure 4 a bottom of a housing element of a housing system of a battery disconnect unit is shown in a schematic top view according to an embodiment of the application. DETAILED DESCRIPTION

[0039] Figure 1 a housing system 10 of a battery disconnect unit 1 is shown in a schematic top view according to an embodiment of the application.

[0040] Here, the housing system 10 comprises a first housing element 21 and a second housing element 22. Here, the first housing element 21 and the second housing element 22 are mechanically connected to one another by means of a releasably configured connection 4 in such a way that a first side 31 of the first housing element 21 and a second side 32 of the second housing element 22 are configured Figure 1 facing one another.

[0041] According to the housing system 10, the Figure 1In the embodiment shown, the first housing element 21 and the second housing element 22 are connected to one another in a force-locked and / or form-locked manner. The releasably configured mechanical connection 4 is thus configured only in the common interior of the first housing element 21 and the second housing element 22.

[0042] The housing system 10 here furthermore comprises an electrical and / or electronic interface 7. The interface serves for an electrical and / or electronic connection of the interior of the first housing element 21 and the second housing element 22. In particular, the housing system 10 has a high-voltage interface 71 and a low-voltage interface 72. The first housing element 21 and the second housing element 22 are thus electrically and / or electronically connected to one another thereby.

[0043] The first housing element 21 and the second housing element 22 here furthermore comprise a plurality of mechanical interfaces 6, which are configured for a mechanical connection of the housing system 10 to a vehicle, which is not shown in the figures.

[0044] The housing system 10 furthermore comprises a hydraulic connection 70, which forms a hydraulic interface for such a vehicle and which can in particular comprise an inflow and an outflow.

[0045] The housing system 10 furthermore comprises a plurality of electrical and / or electronic connections, in particular an electrical high-voltage interface and / or a low-voltage interface.

[0046] The housing system 10 here comprises, for example, a low-voltage interface 61, which is configured for establishing a connection for a control unit.

[0047] The housing system 10 here comprises, for example, a low-voltage interface 62, which is configured for establishing a connection for an on-board power supply system.

[0048] The housing system 10 here comprises, for example, a high-voltage interface 63, which is configured for forming a charging by means of alternating current.

[0049] The housing system 10 here comprises, for example, a high-voltage interface 64, which is configured for forming a charging by means of direct current.

[0050] The housing system 10 here comprises, for example, a high-voltage interface 65, which is configured as an interface for a battery.

[0051] The housing system 10 here comprises, for example, a high-voltage interface 66, which is configured as an interface for a high-voltage consumer.

[0052] The housing system 10 here furthermore comprises a plurality of electrical and / or electronic connections, in particular an electrical high-voltage interface and / or a low-voltage interface. Figure 1 The hydraulic interface 80, which connects the first housing element 21 and the second housing element 22 to one another in a fluid-conducting manner, can be seen here.

[0053] The housing system 10 here furthermore comprises a plurality of electrical and / or electronic connections, in particular an electrical high-voltage interface and / or a low-voltage interface. Figure 2 A housing system 10 of a battery disconnect unit 1 is shown in a schematic side view according to an embodiment of the application.

[0054] Here, a first housing element 21 and a second housing element 22 can be seen first.

[0055] The first housing element 21 is here closed in a reversibly configured manner by means of a first cover element 51, and the second housing element 22 is here closed in a reversibly configured manner by means of a second cover element 52.

[0056] Furthermore, a mechanical interface 6 can be seen here, to which a force 60 is shown acting, in particular. The mechanical interface 6 of the respective housing element 21, 22 is arranged directly adjacent to the mechanical connection 4, respectively, such that the acting bending moment can be reduced overall. In particular, such a mechanical interface 6 is arranged at a distance 600 with respect to the mechanical connection 4, respectively.

[0057] Furthermore, a screw connection 40 can be seen in Figure 2 which connects the two housing elements 21, 22 to one another. Here, a first screw connection 41 is arranged within an inner cavity configured by the two housing elements 21, 22, and a second screw connection 42 is here arranged outside such an inner cavity.

[0058] Here, for example, the battery disconnect unit 1, the control unit 12 and the control unit 13 are accommodated in the first housing element 21. Here, for example, the transformer 14 is accommodated in the second housing element 22.

[0059] Figure 3 A mechanical interface 4 of a housing system 10 of a battery disconnect unit 1 is shown in a sectional view according to an embodiment of the application.

[0060] Here, first of all, a high-voltage interface 71 and a low-voltage interface 72 can be seen, which are surrounded by a sealing 73.

[0061] Furthermore, a first screw connection 41 and a second screw connection 42 can be seen, which are configured according to Figure 2

[0062] A hydraulic interface 80 is here arranged within the first housing wall 23 of the first housing element 21 and the second housing wall 24 of the second housing element 22.

[0063] Furthermore, an orientation pin 27 is shown, which can be inserted into a corresponding opening 28 of the respective other housing element 21, 22. The arrangement shown in Figure 3 is here merely exemplary.

[0064] ​ Figure 4 A bottom of the housing elements 21, 22 of the housing system 10 of the battery disconnect unit 1 is shown in a schematic top view according to an embodiment of the application.

[0065] In particular, the first housing element 21 has a first bottom 25 and the second housing element 22 has a second bottom 26. Both bottoms 25, 26 are here in particular arranged opposite the respective cover element 23, 24, respectively.

[0066] Within the first housing element 21 or within its bottom 25, a first temperature control structure 81 is configured, which is configured to be able to be flowed through by a temperature control fluid.

[0067] Within the second housing element 22 or within its bottom 26, a second temperature control structure 82 is configured, which is configured to be able to be flowed through by a temperature control fluid.

[0068] Here, the first temperature control structure 81 and the second temperature control structure 82 are connected to one another in a fluid-conducting manner by means of a hydraulic interface 80.

[0069] Furthermore, a hydraulic connection 70 is shown, which forms a hydraulic interface for a vehicle and which can in particular comprise an inflow portion 710 and a discharge portion 720.

Claims

1. A housing system of a battery disconnect unit (1), the housing system having a first housing element (21) and having a second housing element (22), the first housing element and the second housing element being mechanically connected to one another by means of a releasably configured connection (4) in such a way that a first side (31) of the first housing element (21) and a second side (32) of the second housing element (22) are configured to at least partially lie flat against one another, wherein, The housing system (10) furthermore comprises at least one electrical and / or electronic interface (7) which electrically and / or electronically connects the first housing element (21) and the second housing element (22) with one another.

2. Housing system of a battery disconnect unit (1) according to the preceding claim 1, characterized in that The first housing element (21) and the second housing element (22) are connected to one another in a force-locked and / or form-locked manner.

3. The housing system of a battery disconnect unit (1) according to any of the preceding claims 1 to 2, characterized in that, A mechanically releasable connection (4) is configured only in the common interior of the first housing element (21) and the second housing element (22).

4. The housing system of a battery disconnect unit (1) according to any of the preceding claims 1 to 3, characterized in that The first housing element (21) comprises a first cover element (51) and the second housing element (22) comprises a second cover element (52), which are respectively configured for reversibly closing the respective housing element (21, 22).

5. Housing system of a battery disconnect unit (1) according to any of the preceding claims 1 to 4, characterized in that The first housing element (21) and / or the second housing element (22) comprise at least one mechanical interface (6) which is configured for mechanical connection to a vehicle.

6. Housing system of a battery disconnect unit (1) according to any of the preceding claims 1 to 5, characterized in that The housing system (2) furthermore comprises at least one hydraulic interface (80) which fluidically connects the first housing element (21) and the second housing element (22) with one another.

7. Housing system of a battery disconnect unit (1) according to any of the preceding claims 1 to 6, characterized in that A first temperature control structure (81) which can be traversed by a temperature control fluid is configured within the first housing element (21) and a second temperature control structure (82) which can be traversed by a temperature control fluid is configured within the second housing element (22), wherein the first temperature control structure (81) and the second temperature control structure (82) are fluidically connected with one another by means of the hydraulic interface (80).

8. Housing system of a battery disconnect unit (1) according to any of the preceding claims 1 to 7, characterized in that The first housing element (21) and / or the second housing element (22) comprise a high-voltage interface and / or a low-voltage interface.

9. A battery disconnect unit having a housing system (10) according to any one of the preceding claims 1 to 8, characterized in that A battery disconnect unit (1), a control unit (12) and / or a control unit (13) are received in the first housing element (21) and a transformer (14) is received in the second housing element (22).

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