Vehicle comprising an easy-access underbody fuse block

Abstract

The invention relates to a motor vehicle comprising a floor (3), a battery (2) arranged under the floor, a rear crossmember bounding the battery pack and a fuse block (1) mounted on the rear crossmember, the fuse block comprising a block body (14) and a cover (15) that together define an interior volume with fuses, with a connecting line (PJ) where the cover meets the block body, the connecting line having a normal direction (W0) perpendicular to the connecting line, the cover and the fuses being screwed by means of screws that have respective screwing axes, the normal direction (W0) being oriented downwards and forming an angle (θ0) with the descending vertical of between 30 degrees and 70 degrees, a free space for maintenance being provided opposite the cover.

Description

DESCRIPTION TITLE OF THE INVENTION: VEHICLE COMPRISING AN UNDERBODY FUSE BOX WITH EASY ACCESS

[0001] The present invention claims priority from French application No. 2306153 filed on 06 / 16 / 2023, the content of which (text, drawings and claims) is incorporated herein by reference.

[0002] The invention relates to a vehicle, in particular an electric or hybrid vehicle, comprising a fuse box. The vehicle may be a 100% electric vehicle (i.e. without a thermal engine) or a hybrid vehicle, for example a plug-in hybrid vehicle.

[0003] This type of vehicle has an electrical energy storage battery, more concisely called an 'electric battery' or even a 'battery'. This type of battery has a fairly high voltage at its terminals, in practice above 100 volts, most often between 200 volts and 600 volts. Voltages above 600 volts are also possible.

[0004] As a result, the voltage of this type of battery extends beyond the very low voltage (VLV) range and it is necessary to take precautions; there are indeed regulatory protection requirements, particularly with regard to possible contact induced by an operator's gesture, either with bare hands or using a tool, or any other unwanted contact following a mechanical shock. [005 j In the context of this document, the voltage referred to by the term 'high voltage' is defined as a voltage greater than 50 volts.

[0006] Furthermore, it is established practice to protect the conductors of the electrical harness of a motor vehicle by means of fuses, including for circuits supporting high voltages.

[0007] Thus, a fuse box is generally provided in the part of the electrical network that supplies equipment connected to high voltage. The fuse box is functionally interposed between the battery and certain equipment directly using high voltage.

[0008] It is this fuse box that is of particular interest to the present invention. Maintenance operations on this fuse box are of particular interest here, including changing a fuse, reading a voltage using a test probe, or any other diagnostic or maintenance operation that may be useful concerning the fuse box.

[0009] The inventors sought to facilitate and streamline maintenance operations involving the fuse box.

[0010] For this purpose, the invention proposes a motor vehicle comprising a main floor, at least one electrical energy storage battery arranged under the main floor, a battery pack crossmember delimiting the battery pack and a fuse box mounted on the battery pack crossmember, the fuse box comprising at least one box body and a cover together delimiting an interior volume of the fuse box, with at least one joint plane, at the location of which the cover meets the box body, the joint plane having a normal direction, perpendicular to said joint plane, the fuse box comprising at least fuses, arranged in the interior volume, the cover and the fuses being screwed by means of screws having respective screw axes, said motor vehicle having a reference in space comprising a longitudinal axis following a direction of movement of said motor vehicle,a lateral axis perpendicular to the longitudinal axis, and a vertical axis perpendicular to the longitudinal axis and to the lateral axis, the vertical axis being directed from bottom to top, and opposite, directed from top to bottom a descending vertical characterized in that the normal direction is oriented downwards, making an angle with the descending vertical of between 30 degrees and 70 degrees.,

[0011] It is understood that the fuse box cover opens in a downward, and optionally rearward, inclined direction in the spatial reference of the vehicle.

[0012] Thanks to this arrangement, the fuse box is directly accessible from underneath the vehicle. The vehicle can be lifted using a garage lift or, for example, a maintenance operator can slide in. under the vehicle or use a garage pit to access the fuse box area.

[0013] The cover can be unscrewed using conventional tools, including, for example, electrician's screwdrivers whose shank is protected by a dielectric sheath.

[0014] Thanks to the geometry of the assembly, to work on the fuse box, it is not necessary to remove the box body from the fuse box, i.e. the box body remains in place.

[0015] It should also be noted that because the fuse box is very close to the battery pack, the primary conductors connecting one to the other are very short. As will be seen later, these conductors are also located in a mechanically well-protected area. This improves the overall protection of the conductors. [0161 According to one embodiment, there is provided, in the axis of each cover or fuse screw, a free space available of at least 10 cm from the joint plane. According to an option, the free space available in the axis of each cover and fuse screw is at least 12 cm, measured from the joint plane. According to an option, the free space available in the axis of certain cover screws and / or certain fuses is at least 15 cm, measured from the joint plane.

[0017] The free space available in front of the cover allows the cover to be removed without removing any other part of the vehicle (except for a possible underbody cover). In addition, the free space available provides access to the interior of the fuse box without removing the fuse box from its support. An operator can pass one hand through to reach inside the box. The free space available in front of the face axes allows the use of a screwdriver in line or only slightly off-axis to screw / unscrew the screw fasteners of the cover as well as for the screw fasteners of the fuses.

[0018] Thanks to the geometry of the assembly, for all electrical operations directly involving the fuse box, it is not necessary to remove the body of the fuse box.

[0019] In particular, thanks to the free space available, the operator or maintenance worker can reach in to grab an element inside the fuse box with their fingers.

[0020] According to one embodiment, the cross member is a rear cross member of a battery pack.

[0021] The fuse box is therefore located in this case at the rear of the main battery pack and the cover opens backwards and downwards. Under these conditions, possible projections of gravel or other objects related to driving do not directly reach the fuse box cover. Note that a low wing of the cross member can protect the body of the fuse box from below at least partially.

[0022] According to one embodiment, the fuse box is interposed between the battery pack and a fuel tank of the vehicle.

[0023] Typically, a fuel tank is made of plastic molding. The shape of the tank may include, and only opposite the fuse box, a recessed area intended to leave the desired free space available in front of the cover.

[0024] According to one embodiment, the normal direction makes an angle with the downward vertical of between 55 degrees and 60 degrees.

[0025] The inventors found that this angular range represents an optimum for access and intervention in the box without disassembling it while occupying the smallest possible space along the longitudinal direction X. In other words, this spatial configuration is compact in the longitudinal direction, while providing the necessary access to avoid having to disassemble the box body of the fuse box. [0261 According to one embodiment, the fuse box may have a general parallelepiped shape with a length noted L1, a width noted L2 and a height noted H, the sum L1 + L2 + H being less than 50 cm, and preferably less than 40 cm.

[0027] According to one embodiment, the fuse box comprises an arming connector, with a coupling direction parallel to the normal direction W0. Access to disconnect the counterpart of this connector, necessary prior action to be able to dismantle the cover, is also made possible by the orientation of the fuse box and the free space in front of the cover at this location. [0281 According to one embodiment, the arming connector is located in an upper portion of the arrangement of the fuse box in position in the vehicle. The arming connector is thus protected from possible direct mechanical attacks such as projections of stones or gravel.

[0029] According to one embodiment, the cover is flat in shape. It is an easy-to-manufacture part, and assembly and disassembly are simple and intuitive. [0301 According to one embodiment, the connections at the ends of the conductors are screw connections and the fuse box is devoid of connectors. As a result, the reliability of such an electrical distribution system is particularly high. In addition, since it is not necessary to remove the box to work on the components inside, it is not necessary to provide connectors to disconnect this fuse box. In addition, the space required by the fuse box is generally much smaller than the space required in the known art. In addition, the weight of the proposed assembly is less than the weight observed with a fuse box equipped with connectors.

[0031] According to one embodiment, the fuse box comprises a box body back and fixing lugs made from the same material as the box body, each fixing lug comprising a flat with at least one hole, the flat being inclined relative to a box body back.

[0032] The back of the box body is parallel to the lid, in the case of a conventional box shape.

[0033] According to a non-limiting embodiment, the inclination between the plane of the flats and the back of the box body is an angle 80, 80 being the 90° complement of 00, 00 being the angle between the normal direction of the joint plane relative to the downward vertical. 80 can be between 30 degrees and 35 degrees. [0341 In particular, a peripheral seal for closing the lid may be provided, the seal being compressed between the lid and the box body when the box is closed normally. This is a simple and well-controlled solution. The peripheral seal may be an elastomer seal.

[0035] According to one embodiment, a sealing device is provided at the location of each wall crossing by the conductor(s), to ensure sealing not only at the level of the cover but also at the level of each of the conductor passages through the wall.

[0036] According to one embodiment, the sealing device is of the cable gland type and comprises an O-ring. This is an effective solution for creating a seal around a cable passing through a wall. More specifically, the sealing device may comprise an O-ring arranged around the conductor and compressed by one or more pressurizing elements.

[0037] In one embodiment, all wall feedthroughs are arranged on the same face of the box body. In other words, all high-voltage conductor inputs / outputs are located on the same side of the fuse box. In one embodiment, all high-voltage inputs / outputs are directed upwards; they are away from the lower part of the fuse box, which can be subject to ricocheting gravel. The conductors are housed in a narrow, concave space and are well protected from the external environment.

[0038] According to one embodiment, the fuse box can be fixed on a specific support providing the desired inclination. Thus, the fuse box can remain geometrically as simple as possible and the specific support is an ad-hoc part comprising the means for inclined fixing.

[0039] According to one embodiment, the box body and the lid are made of aluminum.

[0040] According to one embodiment, the fuse box comprises at least one positive bus bar, one negative bus bar and fuses. [04 1 According to one embodiment, the fuse box comprises a protective mask covering the bus bars and the fuses to provide selective and small access intended for a test probe of an electrical measuring device. This configuration makes it possible to protect vehicle maintenance operators who may have to open the fuse box to replace a fuse or check the presence or absence of voltage on the positive primary conductor or on one of the positive conductors. The protective mask prevents an operator or even an end customer from directly touching live elements with their fingers. [0421 The invention will be further detailed by the description of non-limiting embodiments, and on the basis of the appended figures illustrating variants of the invention, in which: [Fig.1] is a schematic representation in side view of a motor vehicle with an electrical energy storage battery and a fuse box, in accordance with the present invention, [Fig.2] is a schematic top view representation of a motor vehicle with an electrical energy storage battery and a fuse box, in accordance with the present invention, [Fig.3] is a schematic representation in longitudinal section of a portion of the vehicle in which the fuse box is located; [Fig.4] is a perspective view from below of a portion of the vehicle in which the fuse box is located; [Fig.5] represents a top view, cover removed, of the fuse box in accordance with the present invention, [Fig.6] is a view similar to Figure 3, illustrating the operations of removing the cover and the arming connector, [Fig.7] is a view similar to Figure 3, illustrating manual operations interacting with the interior volume of the fuse box, [Fig.8] is an exploded perspective schematic representation of an exemplary fuse box further illustrating an interior protective mask; [Fig.9] is a partial sectional view illustrating an example of a cover locking device at the location of a so-called arming connector; [Fig.10] illustrates an alternative embodiment without screws in the upper part of the cover.

[0043] In the various figures, the same references designate identical or similar elements. For reasons of clarity of the presentation, certain elements are not necessarily represented to scale.

[0044] We are interested in electric or hybrid motor vehicles. The motor vehicle 9 considered here may be a 100% electric vehicle (i.e. without an internal combustion engine) or a hybrid vehicle, for example a plug-in hybrid vehicle. Such a vehicle is illustrated in Figures 1 and 2. [0451 The motor vehicle 9 has a reference frame in space comprising a longitudinal axis X along a direction of movement of said motor vehicle, a lateral axis Y perpendicular to the longitudinal axis X, and a vertical axis Z perpendicular to the longitudinal axis X and to the lateral axis Y, the axis vertical being directed from bottom to top (notation Z+, the vertical descending downwards being noted Z-).

[0046] The axis of the front axle is marked YF, the axis of the rear axle is marked YR. The vehicle comprises a fuse box 1 at the heart of the present invention, this fuse box is in the illustrated example located in the vicinity of the rear axle in the longitudinal direction, a little in front of YR, and in the middle part in the lateral direction Y. [Û47] The electric or hybrid vehicle 9 comprises a battery 2 whose function is to store electrical energy. This type of battery has a storage capacity of between 20 kWh and 150 kWh. For an all-electric zero-emission vehicle, the storage capacity is most often between 50 kWh and 120 kWh, which represents a considerable amount of energy. In this case, the battery 2 occupies a significant area under the floor of the vehicle as illustrated in Figure 2.

[0048] This type of battery has a fairly high voltage at its terminals, in practice above 100 volts, most often between 200 volts and 600 volts. A voltage above 600 volts is also not excluded.

[0049] In Figure 3, battery 2 is shown schematically, the region illustrated is that of the rear end of the battery pack. It can be seen immediately that the fuse box is neither in a vertical nor in a horizontal position, it is in an inclined position as will be seen in detail below. [0501 The respective positive and negative terminals of the battery are electrically connected to a primary junction box, not shown in the figures. The primary junction box is integrated into the battery pack and provides, in particular, general protection and forms the distribution head. The primary junction box includes, in particular, a general isolation relay which interrupts the supply of voltage to the downstream equipment, including the fuse box 1 of interest discussed below.

[0051] The fuse box 1 is electrically arranged downstream of the primary junction box and is supplied via two primary conductors 71 which enter the fuse box 1 (see Figure 5). The cross-section of the primary conductors is typically between 15 mm 2 and 30 mm 2 .

[0052] As seen in Figures 3, 5 and 8, the fuse box 1 comprises at least one box body 14 and a cover 15 together delimiting an interior volume of the fuse box. In the example illustrated, the cover 15 is assembled on the box body 14 by means of screws 7. [0531 The fuse box 1 comprises a positive bus bar 30 and a negative bus bar 40, arranged in the interior volume. Each bus bar is a rigid conductive part, for example a plate, in particular a metal plate or otherwise called a strip, obtained by cutting from a blank with a thickness of between 2 mm and 5 mm.

[0054] In the example shown in the figures, fuse box 1 includes four fuses, labeled F1, F2, F3 and F4 respectively, but the number of fuses could be different.

[0055] The positive primary conductor connects the positive pole of the battery (via the primary junction box) to the positive bus bar 30 by passing through a wall of the box body, and the negative primary conductor connects the negative pole of the battery (via the primary junction box) to the negative bus bar 40 by passing through a wall of the box body.

[0056] The proposed arrangement comprises four pairs of output conductors 72, which extend from the interior volume to an exterior area of ​​the fuse box through a wall of the box body. Each pair of conductors comprises a negative conductor connected to the negative bus bar and a positive conductor supplied by one of the fuses. The cross-section of the output conductors is between 8 mm 2 and 16 mm 2 . [0571 It is noted that in the proposed configuration, there is no clip / tab type connection. In fact, the fuse box 1 is devoid of connectors, the conductors pass continuously through the wall of the box body.

[0058] The connections at the ends of the conductors are screwed connections. To make a screwed connection, you can use a bolt / nut pair or a welded nut and a screw that fits into this welded nut or a welded threaded stud onto which a nut is screwed. [0591 As shown in the figures, the primary conductors are screwed directly onto each of the bus bars respectively. For the conductors output, for example for the first pair, the fuse F1 is connected by a screw connection 81 to the positive bus bar. The other end of the fuse is connected by a bolted connection 82 to the terminal of the first positive conductor 11.

[0060] As is known, the cable ends are stripped and a flat terminal with a hole is crimped onto this stripped end. The crimps are marked 83 in Figure 5.

[0061] In the system promoted here, a cover locking system is provided using a so-called arming connector (this function is also called 'interlock' cover), which has the general function of interrupting the power supply serving the fuse box as soon as said cover 15 is removed from the box.

[0062] For this purpose, it is provided as an electrical connector with a female part 19 and a male part 18 permanently on the housing body. In the example illustrated, it is a two-pin connector whose male part consists of a shunt. The female part carries two conductors 68 functionally connected to a controller (not shown in the figures) which controls a power switch; eg an isolation relay, in the primary junction box. This power switch makes it possible to interrupt the power supply on the primary conductors. 063 When the female part is coupled to the male part, the two conductors are short-circuited by the shunt, the power switch is closed, this is the normal situation, the power supply is armed. [06-3] When the female part is uncoupled from the male part, the two conductors are no longer short-circuited by the shunt, the power switch is then controlled to the open state, in order to isolate the fuse box from the battery voltage. The power supply is then disarmed.

[0065] As illustrated in Figure 9, the body of the female connector 19 has a size greater than the dimension of the hole 35 through which the male connector 18 passes.

[0066] Thus, this connector 19 must first be disconnected before the cover can be removed. In other words, the female plug of the connector belonging to the harness must be physically disconnected so that the cover 15 which surrounds the male plug 18 can be moved substantially away from the box body.

[0067] Note that the coupling axis of the female plug 19 on the male connector 18, marked Wa, is parallel to the axis W0, which will be discussed below.

[0068] The location at which the cover 15 meets the box body 14 defines a joint plane denoted PJ. The joint plane PJ has a normal direction denoted W0. Therefore W0 is perpendicular to the joint plane PJ.

[0069] We note that it is not excluded that there are several offset partial joint planes but there is still at least one joint plane PJ whose perpendicular W0 is of interest here.

[0070] The back 14d of the box body extends in a UV plane, U being a direction parallel to the length and V being a direction parallel to the width as shown in Figure 5.

[0071] The fuse box 1 has a general parallelepiped shape with a length noted L1, a width noted L2 and a height noted H, the sum L1 + L2 + H being less than 50 cm, and preferably less than 40 cm.

[0072] The length L1 can be between 15 cm and 40 cm. The width L2 can be between 5 cm and 12 cm. The height H can be between 5 cm and 10 cm.

[0073] The cover 15 is flat in shape. It may be a cut and drilled plate. The box body and the cover are preferably made of aluminum.

[0073] As illustrated in Figure 3, the normal direction W0 is oriented downwards. The normal direction W0 makes an angle with the downward vertical, noted 00. 00 is between 30 degrees and 70 degrees.

[0075] According to an advantageous embodiment, 00 is between 55 degrees and 60 degrees. According to a particular non-limiting embodiment, 00 is chosen at 57 degrees.

[0076] Expressed differently, the direction V of the width of the base of the box deviates by an angle 80 from the rising vertical Z+. Note that in a parallelepiped box configuration, 80 is the 90° complement of 00.

[0077] As seen in Figure 6, a maintenance operator can use screwdrivers to unscrew the screws 7 securing the cover. A short screwdriver 91 and standard screwdrivers 92 are shown. A screwdriver can also be used, if necessary with a cardan tool. [0781 It is noted that the screw axes of the cover screws 7 and the fuse fixing screws, generically designated by Wi (W1, W2, W3, W4, W5, W6, Wa, etc., cf. figure 6), are all parallel to W0.

[0079] According to the example illustrated in the figures, in particular figure 8, the cover 15 is screwed by means of nine fixing screws 7, but of course this number could be different.

[0080] Once the cover 15 is removed, a maintenance operator can use a test probe 93 to contact a downstream portion of a fuse in order to measure the voltage, i.e. absence or presence of voltage at this location. [0811 As seen in Figure 7, a maintenance operator can pass his hand UH into the free space and grab an item inside the fuse box, eg a fuse to remove it or to install a new one.

[0082] The proposed inclination is clever because, if the housing had been flat with 00=0 then the space it would occupy in the X direction would be greater and moreover it could be damaged more easily by objects striking the underbody of the vehicle. In addition, the arming connector necessarily protruding from the side of the cover would end up protruding downwards into the vehicle underbody area which is undesirable.

[0083] The proposed inclination is clever because if the case had been on its edge, i.e. with 80=0, then it would be necessary to provide a very large space in X to provide access to tools to unscrew the cover screws without removing the body of the case. The proposed angular range is therefore an advantageous compromise in terms of mechanical integration and access for maintenance operations, without removing the body of the case. [0841 The cables / conductors 60 which carry the high voltage enter and exit through the top of the fuse box. At each point where a conductor passes through the wall of the box body, a sealing system 6 based on a cable gland is provided.

[0085] The female plug 19 of the arming connector is coupled to wires 68 which run to the primary junction box. The mating direction Wa is parallel to the normal direction W0.

[0086] As seen in figures 3, 4, 6 and 7, the battery is delimited towards the rear by a cross member 4 called the rear cross member of the battery pack, this cross member can also be called a side member. This cross member can be part of a frame forming the reinforcement framing the battery pack.

[0087] This crosspiece is formed as a profile with in section: a vertical core 40, an upper flange 41, and lower flanges 43, 44.

[0088] Note that the fuse box is partially protected downwards by one of the lower wings 44.

[0089] The fuse box is fixed to the crosspiece 4, by fixing lugs 24.

[0090] The fixing lugs 24, 24a may be integral with the box body, as shown in Figures 5 and 8. Each fixing lug includes a flat with one or two holes. One fixing lug is provided at each end of the box body along the length direction U.

[0091] According to this preferred configuration, the fuse box is fixed directly to the rear cross member 4 of the battery.

[0092] In an alternative embodiment, a specific support part 23 can be provided, or the fixing lugs can be one or two specific parts allowing the desired inclined position to be achieved.

[0093] In the case of a hybrid vehicle, it may be provided that the fuse box 1 is interposed between the battery pack 2 and a fuel tank 80 of the vehicle. A particular shape of the tank may be provided to provide the desired available space at the rear of the fuse box cover. [0941 Between the box body and the lid there is provided a peripheral seal 12 for closing the lid. The peripheral seal 12 extends continuously around the periphery of the box body. The peripheral seal 12 is for example made of elastomeric polymer. The seal is compressed between the lid 15 and the box body 14 when the box is closed normally.

[0095] It can be seen, in light of Figure 9, that the screws 7 are arranged outside the contour of the peripheral seal 12.

[0096] All wall bushings are arranged on the same face 140 of the box body 14. In other words, all high voltage conductor inputs / outputs are located on the same side of the fuse box, here upwards. [0971 According to an alternative embodiment illustrated schematically in Figure 10, the upper part of the cover may be devoid of fixing screws. Instead, a system for embedding fingers 95 in ears 96 is provided. In the example illustrated, two fingers 95 are provided, each inserted respectively in an ear 96 by complementary shape, which forms a pseudo hinge zone, of axis A6.

[0098] After pivoting the cover around the axis A6, it can be removed by releasing the fingers 95 from the ears 96 (reference 15' in figure 10). [0991 This principle involves rotating the lid both for closing and opening relative to the hinge area which includes the fingers and ears. As a result, there are no screws to be screwed or unscrewed on the upper edge 15a of the lid and the available space to be provided can be somewhat reduced in the upper part of the assembly. In the example illustrated, there are five screws 7 which allow the seal to be pressurized. The closing movement of the lid also allows the seal to be pressurized at the hinge area.

[0100] As apparent in Figure 8, the fuse box 1 may include a protective mask 17 covering the bus bars and the fuses to provide selective and small access for a test probe of an electrical measuring device.

[0101] More precisely, the mask 17 covers the entire front surface of the case above the fuses, except at the location of certain holes 170 with a diameter between 4 and 6 millimeters. These holes 170 allow access to the screw heads with a touch probe but do not allow a finger to pass through. [1021 By which means, one can comply with an IP2X type access restriction requirement in the interior volume. [1021 We note that if a fuse is not used according to the configuration of the vehicle, therefore respective drivers are absent, the device is replaced sealing by a simple shutter which allows the unused hole(s) to be hermetically sealed.

Claims

CLAIMS 1. Motor vehicle (9) comprising a main floor (3), at least one electrical energy storage battery (2) arranged under the main floor, a battery pack crossmember delimiting the battery pack and a fuse box (1) mounted on the battery pack crossmember, the fuse box comprising at least one box body (14) and a cover (15) together delimiting an interior volume of the fuse box, with at least one joint plane (PJ), at the location of which the cover abuts the box body, the joint plane having a normal direction (W0), perpendicular to said joint plane, the fuse box comprising at least fuses, arranged in the interior volume, the cover and the fuses being screwed by means of screws having respective screw axes (W0, W1, W2, W3, W4, W5, W6), said motor vehicle having a reference in space comprising a longitudinal axis (X) following a direction of movement of said motor vehicle,a lateral axis (Y) perpendicular to the longitudinal axis (X), and a vertical axis (Z) perpendicular to the longitudinal axis (X) and to the lateral axis (Y), the vertical axis being directed from bottom to top, and opposite, directed from top to bottom a descending vertical (Z-), characterized in that the normal direction (W0) is oriented downwards, making an angle (00) with the descending vertical (Z-) of between 30 degrees and 70 degrees., 2. Vehicle according to claim 1, characterized in that there is provided, in the axis of each screw (W0, W1, W2, W3, W4, W5, W6) of the cover or fuse, a free space available of at least 10 cm from the joint plane.

3. Vehicle according to one of claims 1 to 2, characterized in that the cross member is a rear cross member of a battery pack.

4. Vehicle according to one of claims 1 to 3, characterized in that the fuse box (1) is interposed between the battery block (2) and a fuel tank fuel (80) of the vehicle.

5. Vehicle according to one of claims 1 to 4, characterized in that the normal direction (W0) makes an angle (00) with the descending vertical of between 55 degrees and 60 degrees.

6. Vehicle according to one of claims 1 to 5, characterized in that the fuse box has a parallelepiped shape with a length noted L1, a width noted L2 and a height noted H, the sum L1 + L2 + H being less than 50 cm.

7. Vehicle according to one of claims 1 to 6, characterized in that the fuse box comprises an arming connector (18, 19), with a coupling direction (Wa) parallel to the normal direction (W0).

8. Vehicle according to one of claims 1 to 7, characterized in that the cover (15) is of flat shape.

9. Vehicle according to one of claims 1 to 8, characterized in that the connections at the ends of the conductors are screw connections.

10. Vehicle according to one of claims 1 to 9, characterized in that the fuse box (1) comprises a box body back (14d) and fixing lugs (24, 24a) made from the same material as the box body, each fixing lug comprising a flat with at least one hole, the flat being inclined relative to the box body back.

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