DE102018205949A1 - Electrically driven motor vehicle with a traction battery consisting of at least one housing with battery cells - Google Patents

Abstract

The invention relates to an electrically driven motor vehicle with a traction battery consisting of at least one housing (10 ') with battery cells. The housing (10 ') includes electrical contacts (111) for tapping a voltage generated by the battery cells. According to the invention, it is proposed that the housing (10') contains at least two plug-in openings (14 ') which allow access to the contacts (111). Furthermore, sealing means (255) are provided which, in the mounting position of a connector (25 "), allow liquid to enter the housing (10 '). prevent.

Description

The invention relates to an electrically drivable motor vehicle with a traction battery comprising at least one housing with battery cells having the features of the preamble of patent claim 1.

From the preamble of claim 1 forming DE 11 2009 002 264 T5 is an electrically driven motor vehicle with a traction battery has become known, which has an outer housing, in which a plurality of housings are arranged interchangeably, each with contained battery cells. The outer housing has for this purpose a plurality of defined slots, to which the housings are adapted and can be inserted, secured and electrically connected. Through each housing with battery cells, a first, shock-absorbing structure is formed. The housing receiving the outer housing forms a second, shock-absorbing structure. As a result, the traction battery of the motor vehicle should be particularly accident-proof.

In the WO 2016/005028 A1 a voltage protected manufacturable motor vehicle battery is proposed. Specifically, the motor vehicle battery on several battery modules, each having a plug connection. Each battery module is formed as a flat plate and includes a plurality of cell cells formed as a foil cells. Several battery modules are stacked on top of each other so that the plug-in connections are arranged directly above one another. Via a single plug-in module, which is plugged into the plug-in connections, a connection of the voltage taps of all battery modules and also a coupling of existing bus connections can be made with a battery management system.

Finally, in the DE 11 2011 101 352 A1 nor describes a traction battery for a motor vehicle comprising a plurality of cell modules each having a plurality of battery cells. Each cell module is assigned a cell control for cell monitoring. The controls are in turn connected to a battery management controller. The traction battery is modular, wherein the cell modules are designed as plug-in modules detachably mounted on a circuit board.

The present invention is based on the object to provide an electrically driven motor vehicle according to the features of the preamble of claim 1, in which a reliable tightness of the traction battery can be ensured in the assembled state.

This object is achieved with an electrically driven motor vehicle having the features of claim 1. Advantageous embodiments or developments of the invention can be found in the dependent claims.

The invention is therefore initially based on an electrically driven motor vehicle with a traction battery consisting of at least one housing with battery cells. The housing includes electrical contacts for tapping a voltage generated by the battery cells.
For example, hybrid vehicles (HEV = hybrid electric vehicle), plug-in hybrid vehicles (PHEV = plug-in hybrid electric vehicle) or even pure electric vehicles, ie battery vehicles (BEV = Battery Electric Vehicle) come into consideration as electrically driven vehicles.

The invention now proposes that the housing contains at least two plug-in openings which enable access to the contacts. In the insertion openings at least a part of a connector is inserted in each case and thus the voltage can be tapped. Furthermore, sealing means are provided which prevent the insertion of liquid into the housing in the mounting position of a connector.

In this way, a seal of the housing or the traction battery by the one or more connectors is possible in a simple manner. The necessary sealing area of a housing is reduced to a small area of the plug-in openings. The cost of a seal of the housing can be minimized.

According to a first development, the sealing means each seal perpendicular to a direction of insertion arranged contact surfaces between the housing and the connector. As a plug-in direction that direction should be understood, in which the housing is plugged together with a connector. Due to the development of the seal can be realized in a simple manner at the same time with the preparation of the electrical connection.

In an advantageous embodiment of the invention, the connector can be held in its mounting position with its contact surface under bias in the direction of the contact surface of the housing. In other words, the connector is pressed or pulled against the housing. This increases the reliability of the seal.

A structurally simple solution for implementing this idea can be realized by each connector has a guided through the insertion opening part. In addition, latching means are present in a wall surrounding the plug opening, which latching elements interact with latching means of the part located within the plug opening of the plug connector.

According to an expedient embodiment, the sealing means may alternatively or additionally also seal in each case parallel to a plug-in direction extending contact surfaces between the housing and the connector. The contact surfaces are then formed by a wall surrounding the plug opening and a part of the connector located within the plug opening. This solution also leads to a reliable sealing of the housing or can increase the reliability of the seal even more.

The seal can be done very inexpensively if the sealants are formed by O-rings. O-rings are commercially available in all sizes and therefore do not need to be designed individually.

When using O-rings, it is expedient if the connector or have grooves in which the O-rings are recessed. As a result, a reliable seat of the O-rings is ensured even during operation of the motor vehicle.

In another development of the invention, the housing accommodates two cell stacks. Each cell stack has two plug contacts for tapping off the voltage (<60 V) of the cell stack on one end face. The end faces of the cell stack with the plug contacts are opposite each other and are directed towards each other. So they are much closer together than the front sides of the cell stack without plug contacts. This development allows a local concentration of the insertion openings on the housing and thus contributes to a simple and compact design.

It is highly advantageous if at least one maintenance opening can be opened on the housing, which opens an access to a maintenance shaft. Through the maintenance shaft, a receiving space for at least one battery cell management control device is formed. The maintenance shaft is separated from a receiving space for the battery cells. Thus, a self-contained receiving space for the battery cell management control device is formed by the maintenance shaft.

In this way, an easy and safe maintenance or a simple replacement of the battery cell management control device is possible. Due to the separation of the receiving space of the battery cell management control device from that for the battery cells, therefore, the receiving space for the battery cells does not have to be exposed in case of maintenance. In this way, the risk of damage to the battery cells is avoided and maintenance is possible safely.

The traction battery may be formed by a plurality of housing with battery cells, which are replaceably mounted on the motor vehicle. Quasi individual battery modules are thus formed by the individual housings, whereby tappable (harmless) individual voltages of the individual housings are connected together to form a tapped total voltage of the traction battery. The tapping of the individual voltages can be done safely and safely through the insertion openings. Moreover, such a modular design also has the advantage that in case of damage or malfunction of individual battery cells not the usual traction battery must be removed with a housing, but only the affected battery module. Furthermore, this leads to a much easier tradability in case of a necessary exchange. Because the individual weight of the battery modules is many times lower than the total weight of conventional traction batteries.

Another development finally proposes that each connector has an outline quadrangular base plate, with two each two plug contacts having halves. The halves are in turn connected integrally with each other via a cross-sectionally bridge-like connection. The bridge-like connection may preferably be bent semicircularly perpendicular to the connecting direction. In this way, relative movements between the housings through the connectors can be compensated to some extent without damaging the connectors.

Preferred embodiments of the invention are illustrated in the figures and will be explained in more detail with reference to the figures in the following description. As a result, even further advantages of the invention become apparent. The same reference numerals, even in different figures, refer to the same, comparable or functionally identical components. In this case, corresponding or comparable properties and advantages are achieved, even if a repeated description or reference does not occur. The figures are not or at least not always true to scale. In some figures, proportions or distances may be exaggerated to more clearly highlight features of an embodiment.

• 1 die Ansicht eines Gehäuses mit Batteriezellen und Batteriezellenmanagement-Steuereinrichtungen von oben,
• 2 eine Ansicht des Gehäuses von der Unterseite,
• 3 eine perspektivische Explosionsdarstellung des Gehäuses,
• 4 eine perspektivische Darstellung des zusammengebauten Gehäuses,
• 5 eine Darstellung mehrerer Gehäuse von oben, welche über Steckverbinder elektrisch verbunden sind,
• 6 eine Schnittdarstellung gemäß Schnittverlauf VI aus 5,
• 7 eine Darstellung eines Steckverbinders im Umriss von oben,
• 8 eine Darstellung des Steckverbinders aus Ansicht VIII der 7,
• 9 eine Darstellung eines Steckverbinders im Umriss von oben, in einer zweiten Ausführungsform,
• 10 eine Darstellung des Steckverbinders aus Ansicht X der 9,
• 11 eine Schnittansicht gemäß Schnittverlauf XI aus 7,
• 12 eine Schnittdarstellung vergleichbar mit 11, jedoch im Montagezustand des Steckverbinders mit dem abzudichtenden Gehäuse,
• 13 ein elektrisch antreibbares Kraftfahrzeug mit mehreren montierten Gehäusen, teilweise als Explosionsdarstellung und
• 14 eine andere Explosionsdarstellung des Kraftfahrzeugs.

It show, each schematically

• 1 the view of a housing with battery cells and battery cell management control devices from above,
• 2 a view of the housing from the bottom,
• 3 an exploded perspective view of the housing,
• 4 a perspective view of the assembled housing,
• 5 an illustration of a plurality of housing from above, which are electrically connected via connectors,
• 6 a sectional view according to section line VI 5 .
• 7 an illustration of a connector in outline from above,
• 8th a representation of the connector from view VIII of 7 .
• 9 an illustration of a connector in outline from above, in a second embodiment,
• 10 a representation of the connector from view X of the 9 .
• 11 a sectional view according to section line XI 7 .
• 12 a sectional view comparable to 11 but in the assembled state of the connector with the housing to be sealed,
• 13 an electrically driven motor vehicle with several mounted housings, partially exploded and
• 14 another exploded view of the motor vehicle.

In the 1 is a housing 10 it can be seen in which several battery cells 11 are included. The housing 10 is formed cuboid and has in the illustrated view from above a rectangular outline, with side walls 101 and end walls 102 , The housing 10 has a longitudinal extent l1 and a width b , As can be seen, the longitudinal extent l1 of the housing several times larger than its width b ,

Approximately in the middle of the longitudinal extension 11 , in a middle-level ME is a maintenance box 12 arranged.

Longitudinal l1 seen in the case 10 on both sides of the maintenance box 12 each a recording room 18 for the battery cells 11 educated. Here are the battery cells 11 in every recording room 18 with its longitudinal extension parallel to the longitudinal extent l1 of the housing 10 aligned and fill the recording room 18 each essentially from. Necessary insulation measures to the battery cells 11 from the walls of the housing 10 to isolate are not shown.

The housing 10 is essentially closed and thus formed dive waterproof. The in the case 10 recorded battery cells 11 as well as the maintenance box 12 are indicated by dashed lines for clarity.

Furthermore, there are high voltage (HV) vents 14 shown. These HV plug-in openings 14 can be connected by means of suitable connectors (not shown) and thus with other housings 10 voltage technology can be interconnected to form a larger unit.

Each of the HV plug-in openings 14 is separately sealed (not shown in detail) and has a shock protection, which will be explained later.

The maintenance box 12 serves in particular for receiving two battery cell management control devices 13 , These are in suitable plug connections (not shown) within the maintenance box 12 pluggable. Each of the battery cell management controllers 13 is for the management of a cell stack associated with it 11 ' responsible.

With 19 is a wireless communication interface that is used for communication or data exchange of the battery cell management control devices 13 with other battery cell management controllers 13 other housing 10 or with a higher level battery management controller (not shown). The communication interface 19 may be formed, for example, optically, by radio or even inductively.

In the 2 is the case 10 from a lower wall 103 out of. The battery cells 11 are not shown anymore.

The maintenance box 12 forms two maintenance shafts 17 out, their access each via a maintenance opening 15 from the bottom wall 103 out is possible.

Every maintenance opening 15 is via a detachable lid 16 lockable, of which only one is shown. Every lid 16 closes the maintenance shaft 17 sealing off and is preferably via a screw connection to the lower wall 103 connected. This is the case 10 a total of dive waterproof trained.

Upon a necessary maintenance of a battery cell management controller 13 just needs the lid 16 to be removed, allowing access to the maintenance shaft 17 and thus to the battery cell management controller 13 is released. This can then easily from the maintenance shaft 17 pulled out and possibly replaced by a new one.

As an alternative to the exemplary embodiment, it is also conceivable that the maintenance shafts 17 closed by a lid, which is an integral part of the lower wall 103 are. However, these are then surrounded by predetermined breaking points and can be broken out during maintenance. After maintenance, the openings 15 be sealed again by a suitable cover, for example, then with the wall 103 is screwed (not shown).

From the 3 are the individual components of the housing 10 good to see. The housing 10 points with its walls 101 . 103 and 104 a rectangular cross section. This is inexpensive to produce or manufactured by extrusion. After insertion of the plug openings 14 and maintenance openings 15 in the case 10 becomes the maintenance box 12 in the case 10 pushed and in the area of the plug-in openings 14 fixed. Subsequently, the two cell stacks can 11 ' (Cell modules) in the frontal openings of the housing 10 be pushed. Here are the cell stacks 11 ' at the front of the maintenance box 12 at.

Every cell stack 11 ' is at its front ends S1 . S2 with a wiring electronics 110 for interconnecting the individual battery cells 11 Mistake. With 113 is a multi-core track quantified, which the wiring electronics 110 connects with each other. At the front S1 of each cell stack 11 ' are a plug contact 111 (Positive pole) and a plug contact 112 (Negative pole) recognizable. About the plug contacts 111 . 112 can be the provided voltage of each cell stack 11 ' be tapped. The tapped voltage of each cell stack 11 ' is less than 60 V. In the assembled state of the housing 10 are the plug contacts 111 . 112 directly below the plug-in openings 14 , The front ends S1 the cell stack 11 ' with the plug contacts 111 . 112 are then directed towards each other, so have only a small distance.

After inserting the cell stacks 11 ' becomes the case 10 frontally by end walls 102 locked. The end walls 102 are preferably with the housing 10 welded.

After plugging in the battery cell management controllers 13 in the maintenance openings 15 and closing through the lids 16 is the case 10 submersible waterproof and represents a complete, universally applicable battery module.

In 4 is the case 10 again in perspective in an assembled state. In the installed state of the housing 10 put X is a vehicle longitudinal direction, Y a vehicle transverse direction and Z a vehicle vertical direction.

In this illustration are one of the side walls 101 , one of the end walls 102 and also an upper wall 104 of the housing 10 clearly visible.

The one in the middle of the case 10 arranged maintenance box 12 and a battery cell management controller received therein 13 (only one of two is shown) are shown in dashed lines. Also in the case 10 recorded cell stack 11 ' indicated.

The side walls 101 , the upper wall 104 and also the lower wall 103 have a wall thickness which is about 4 to 6 millimeters, preferably about 5 millimeters. In this way, forces are through these walls Fy easily accessible in the vehicle transverse direction.

From this figure and the previous figure it can be seen that the maintenance box 12 has a quadrangular, in particular rectangular shape in outline. It fills the equally rectangular cross-section of the housing 10 from the inside and lies with an upper wall on the upper wall 104 of the housing 10 , with a lower wall on the lower wall 103 of the housing 10 and with side walls on the side walls 101 of the housing 10 at. The maintenance box 12 is preferably fixedly in the housing via an adhesive connection or via a press fit 10 held.

Due to the wall thickness of the housing 10 on the one hand and the wall thicknesses of the maintenance box 12 on the other hand arises in the area of the maintenance box 12 a particularly high stability, giving a transmission of high forces Fx in the vehicle longitudinal direction and / or forces Fz in vehicle vertical direction allows.

The 5 and 6 show how connectors 25 in the plug-in openings 14 the housing 10 are plugged in and with plug contacts 251 into the plug contacts 111 respectively. 112 the cell stack 11 ' to grab. Each connector 25 connects only similar electrical poles forming plug contacts 111 or 112 different housing 10 electrically conductive with each other. The housing 10 So they are alternately arranged with their electrical poles, more precisely, rotated alternately 180 degrees about the Z-axis. An interconnection of the through the housing 10 or cell stack 11 ' supplied individual voltages then carried by a suitable electrical connection of the connector 25 similar poles.

From the 7 and 8th is a connector 25 individually visible. Each connector 25 has a base plate 250 on that in half 250a and 250b is divided. The base plate 250 preferably has a rectangular outline. Of every half 250a respectively. 250b Stand down two tongue-like plug contacts 251 which, in the assembled state in the plug contacts 111 respectively. 112 grab (cf. 6 ). The halves 250 a, b are via a bridge-like connection 252 integrally connected. How out 8th becomes clear, stands out the connection 252 semicircular from the plane of the base plate 250 out. Through the bridge-like connection 252 can forces Fx , In the assembled state so forces in the vehicle longitudinal direction are compensated to some extent by the halves 250 a . b can be moved towards each other.

It can also be seen that in the base plate 250 around the plug contacts 251 each circumferential grooves 256 are introduced. Additionally or alternatively, in the plug contacts 251 even each circumferential grooves 256 be introduced. The grooves 256 serve for the partial absorption of sealants 255 in the form of O-rings. With S is a plug-in direction quantified in which the connectors 25 with a housing 10 be put together.

The 9 and 10 show an embodiment of a connector 25 ' in which deviates from the connector 25 circular plug contacts 251 ' available.

Of the 11 is another connector 25 " refer to. Unlike the connector 25 is a plug contact 251 ' present, which on two opposite sides, each with a detent recess 257 is provided. When plugging the connector 25 " with a housing 10 ' in the direction of insertion S (see also 12 ) creates a reliable seal at the same time. This is a perpendicular to the direction of insertion S arranged contact surface 253 of the connector 25 " against a perpendicular to the direction of insertion S arranged contact surface of the housing 10 ' sealed, which through the upper wall 104 of the housing 10 ' is formed.

To achieve that connector 25 " with preload against the housing 10 ' presses, points the case 10 ' unlike the case 10 a plug-in opening 14 ' with additional radial bores 141 on, in which spring elements 142 are included. The spring elements 142 Press ball-like locking means 143 radially in the locking recesses acting as counter-locking means 257 , Thus, the connector becomes 25 " under bias in its the housing 10 ' held in sealing position and can still without tools from the housing 10 ' be separated. Through two-sided insertion bevels 259 is an insertion of the plug contact 251 ' in the plug-in opening 14 ' and impressions of the ball-like locking means 143 facilitated before the mounting position.

Additionally or alternatively, the seal can also be between contact surfaces 254 of the connector 25 " and contact surfaces 100 the plug-in opening 14 ' be realized, which are parallel to the plugging direction S stand. It is still indicated by dashed lines that the connector 25 " in the assembled state electrically conductive in the below the plug opening 14 ' existing plug contact 111 (or 112) attacks.

In the 13 is an electrically driven motor vehicle K (shell only) shown, which is a longitudinal extension l2 having. In particular, one is between longitudinal beams 20 (Sills) trained recording room A formed such that in a vehicle transverse direction between the longitudinal members 20 exactly one case 10 fits and the recording room A in longitudinal direction l2 of the motor vehicle K exactly six cases 10 can record.

The figure is partially shown in exploded view. So is next to five enclosures 10 a housing 10 shown exposed to make it clear that the housing 10 during assembly or maintenance easy from bottom to top of the vehicle K can be attached. At the same time while the electrical and the housing 10 sealing contact between the housing 10 and the connectors 25 produced. Furthermore, as a central connection element is a power strip 21 exposed, which shows the tapping of the individual housing 10 interconnected total voltage allows and supplies an electric motor, not shown, with voltage.

Furthermore, it can be seen that all maintenance openings 15 or lid 16 from the underside of the motor vehicle K are accessible.

After removing an underrun protection 22 can thus selectively either individual battery cell management control devices 13 can be removed and replaced or it is an easy removal of selected housings 10 possible. Each of the housings 10 is about recesses 28 from front side existing connection flanges 29 (see 4 ) with the side members 20 screwed.

Finally, based on 14 nor a slightly different exploded view of the motor vehicle K shown, being over the housings 10 arranged cooling channels 23 can be seen. The cooling channels 23 are in the final assembly state of the motor vehicle K in heat-conducting connection with the upper wall 104 the housing 10 , Through the cooling channels 23 a coolant (for example CO ₂ ) is passed in a manner not shown. The housing 10 , each of which virtually represents a battery module, form a traction battery T of the motor vehicle K out.

The modular construction described makes the flexibility and handling during maintenance enormously easier. In addition, allow each housing 10 associated and easily replaceable battery cell management controllers 13 a very easy maintenance.

Furthermore, in this way, the use of a housing 10 as a fully-fledged power source with its own energy management, also in other technical fields than automotive technology, for example as a stand-alone solution.

With 24 is a sill reinforcement of fiber composite plastic figured. This leads to an additional safety against lateral, on the traction battery T acting crash loads.

Furthermore, the connectors 25 clearly visible when mounting the housing 10 with their plug contacts 251 with the plug-in openings 14 (see. 4 . 5 and 6 ) and about the individual voltage of each cell stack 11 ' can be tapped. The housing 10 are connected to each other via the plug contacts or connected. Finally, with the help of the already mentioned connector strip 21 the total voltage can be tapped in a manner not shown. The connectors 25 be through a connection bar 26 spatially interconnected. Preferably, the connectors 25 in the connection bar 26 firmly embedded and thus pre-adjusted. This facilitates a "blind plugging" of the housing 10 from bottom to top in the direction of the connector 25 , The connection bar 26 For each electrical pole to be disconnected, there is an insulated cable to which all the poles of the housings with similar poles are attached 10 connected connectors 25 be brought into contact.

Finally there are other supply lines 27 also shown on the top of the traction battery T or the housing 10 are guided along and their position thus also easy to maintain the traction battery T contributes.

LIST OF REFERENCE NUMBERS

10, 10 '

casing

11

battery cells

11 '

cell stack

12

maintenance box

13

Battery cell management controllers

14, 14 '

plug openings

15

maintenance opening

16

cover

17

maintenance shaft

18

accommodation space

19

wireless communication interface, wireless communication means

20

longitudinal beams

21

power strip

22

Underride protection

23

cooling channels

24

Sill reinforcement made of fiber composite plastic

25, 25 ', 25 "

Connectors

26

connecting strip

27

supply lines

28

recesses

29

flanges

101

sidewalls

102

end walls

103

lower wall

104

upper wall, contact surface

105

Contact surface, wall

110

Verschaltungselektronik

111

Plug contacts (positive pole)

112

Plug contacts (negative pole)

113

conductor path

141

radial bores

142

spring elements

143

latching means

250

baseplate

250a, b

halves

251, 251 ', 251 "

plug contacts

252

bridge-like connection

253

contact area

254

contact area

255

Sealant; O-rings

256

circumferential grooves

257

Securing means; catch recess

258

contact area

259

bevels

A

accommodation space

Fx

force

Fy

force

Fz

force

K

electrically driven motor vehicle

I1

Longitudinal extension of the housing

I2

Longitudinal extension of the motor vehicle

ME

midplane

S

plug-in direction

S1, S2

front sides

T

traction battery

V

locking mechanism

w

clear width

X

Vehicle longitudinal direction

Y

Vehicle transverse direction

Z

Vehicle vertical direction

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 112009002264 T5 [0002]
• WO 2016/005028 A1 [0003]
• DE 112011101352 A1 [0004]

Claims (10)

Electrically driven motor vehicle (K) having a traction battery (T) comprising at least one housing (10, 10 ') with battery cells (11), which (10) has electrical contacts (111, 112) for tapping through the battery cells (11) voltage includes, characterized in that the housing (10) at least two plug-in openings (14, 14 ') that access to the contacts (111, 112) Enable and in each of which at least a part of a connector (25, 25', 25 ") introduced and thus the voltage can be tapped off, wherein sealing means (255) are present, which prevent in the mounting position of a connector (25, 25 ', 25") an entry of liquid into the housing (10, 10'). Electrically driven motor vehicle (K) according to Claim 1 , characterized in that the sealing means (255) each perpendicular to a direction of insertion (S) arranged contact surfaces (104, 253) between the housing (10, 10 ') and the connector (25, 25', 25 ") seal. Electrically driven motor vehicle (K) according to Claim 2 , characterized in that the connector (25 ") in its mounting position with its contact surface (253) under bias in the direction of the contact surface (104) of the housing (10 ') is held. Electrically driven motor vehicle (K) according to Claim 3 , characterized in that each plug connector (25 ") has a part guided through the plug-in opening (14 ') and latching means (143) are present in a wall (100) delimiting the plug-in opening (14') and latching with latching means (257). of the within the plug opening (14 ') located part of the connector (25 ") cooperate. Electrically driven motor vehicle (K) according to one of the preceding claims, characterized in that the sealing means (255) in each case parallel to a plug-in direction (S) extending contact surfaces (100, 254) between the housing (10 ') and the connector (25 ") seal, wherein the contact surfaces (100, 254) by a plug opening (14 ') bounding wall (100) and within the insertion opening (14') located part of the connector (25 ") are formed. Electrically driven motor vehicle (K) according to one of the preceding claims, characterized in that the sealing means (255) are formed by O-rings. Electrically driven motor vehicle (K) according to Claim 6 , characterized in that the connectors (25 ") have grooves (256) into which the O-rings (255) are embedded Electrically driven motor vehicle (K) according to one of the preceding claims, characterized in that the housing (10) accommodates two cell stacks (11 ') and each cell stack (11') has two plug contacts (111, 112) on one end face (S1), wherein the end faces (S1) with the plug contacts (111, 112) are opposite. Electrically driven motor vehicle (K) according to one of the preceding claims, characterized in that the housing (10) at least one maintenance opening (15) can be opened, which provides access to a maintenance shaft (17) through which a receiving space for at least one battery cell management Control device (13) is formed, wherein the maintenance shaft (17) from a receiving space (18) for the battery cells (11) is separated. Electrically driven motor vehicle (K) according to one of the preceding claims, characterized in that each plug connector (25, 25 ') has an outline quadrangular base plate (250), with two halves (250a, 250) each having two plug contacts (251, 251'). 250b), wherein the halves (250a, 250b) are integrally connected to one another via a connection (252) bridged in cross-section.

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