Electrical energy storage device for motor vehicle, in particular for motor vehicle, and motor vehicle

Abstract

The invention relates to an electrical energy storage device (1) for a motor vehicle, comprising at least two storage modules (2, 3), each of which has a plurality of electrically connected storage cells (4) for storing electrical energy and is arranged in an electrical circuit having at least one first conducting element (5), via which the storage modules (2, 3) are electrically connected to each other; and having at least one second conducting element (7), which is formed separately from the first conducting element (5), the first conducting element (5) being connected to the second conducting element (7) by means of at least one connecting element (8), which is formed separately from the conducting elements (5, 7) and which is hooked with the second conducting element (7) and thereby fixed to the second conducting element (7).

Description

Technical Field

[0001] The invention relates to an electrical energy storage device for a motor vehicle, in particular for a powered vehicle, according to the preamble of claim 1. The invention also relates to a motor vehicle having at least one such electrical energy storage device. Background Art

[0002] DE 10 2021 106 470 A1 discloses a known electrical energy storage device for storing electrical energy for a motor vehicle. DE 10 2010 002 681 B4 discloses an electrical plug connector. DE 10 2017 206283 A1 discloses a battery module for a high-voltage energy storage device for a motor vehicle. Summary of the invention

[0003] The object of the present invention is to provide an electrical energy storage device for a motor vehicle and a motor vehicle having such an electrical energy storage device, which allows particularly simple and thus time-saving and cost-effective production of the electrical energy storage device.

[0004] This object is achieved according to the invention by an electrical energy storage device having the features of claim 1 and by a motor vehicle having the features of claim 10. Advantageous embodiments of the invention are the subject matter of the dependent claims.

[0005] The first aspect of the present invention relates to an electric energy storage device for a motor vehicle, also referred to as a vehicle and preferably configured as a power vehicle, especially a passenger car. This means that the motor vehicle has an electric energy storage device in its fully manufactured state, by means of which or in which electric energy can be stored or stored, especially electrochemically can be stored or stored. The electric energy storage device is preferably a high-voltage component, whose voltage, especially the operating voltage or the rated voltage is preferably greater than 50 volts, especially greater than 60 volts, and quite preferably several hundred volts. For example, the motor vehicle is a hybrid vehicle or an electric vehicle, especially a battery electric vehicle (BEV). For example, the motor vehicle has at least one motor in its fully manufactured state, by means of which the motor can be driven electrically, especially purely electrically. For example, the electric motor can be supplied with electric energy stored in the electric energy storage device, so that the motor can be operated in motor operation and therefore as a motor. The motor vehicle can be driven electrically, especially purely electrically, by means of the motor. The motor is preferably a high-voltage component, whose voltage, especially the operating voltage or the rated voltage is preferably greater than 50 volts, especially greater than 60 volts, and quite preferably several hundred volts. Quite particularly, the electrical energy storage device is a battery, in particular a high-voltage battery, wherein the electrical energy storage device quite preferably is a secondary battery.

[0006] The electrical energy storage device has at least two storage modules, which are also referred to as modules for short. Each storage module has a plurality of storage cells that are constructed separately from each other and are used to store, in particular electrochemically store electrical energy. The storage cells of the modules are also referred to as battery cells and are single battery cells, and are therefore separate components that are constructed separately from each other. The storage cells of the respective storage modules are electrically connected to each other. In addition, the storage modules are electrically connected to each other. For this purpose, the storage modules are arranged in a circuit having at least one first conduction element. The first conduction element is also referred to as a module connector, because the storage modules are electrically connected to each other, in particular, by means of a module connector. It is also conceivable that one of the storage modules is electrically connected to a battery management unit (BMU: Battery Management Unit) of the electrical energy storage device by means of a module connector, so that, for example, the above-mentioned circuit is closed. Therefore, the first conduction element is, for example, configured to transmit electrical energy stored in the storage cells or in the electrical energy storage device.

[0007] The electrical energy storage device also has at least one second conduction element which is designed separately from the first conduction element. It is conceivable that the second conduction element is arranged in the circuit or outside the circuit. For example, the second conduction element is designed to transmit the electrical energy stored in the storage battery cells. It is also conceivable that the second conduction element is designed to transmit at least one electrical signal. For example, the electrical signal characterizes the voltage of at least one of the storage battery cells and / or the temperature of at least one of the storage battery cells. It is also conceivable that the second conduction element has at least or exactly one channel, which is preferably directly bounded by the second conduction element, in particular directly bounded by the inner circumferential side of the second conduction element. For example, the channel can be flowed through by a fluid, which can directly contact the second conduction element or the inner circumferential side, for example, on its path through the channel. Quite particularly, the fluid is a temperature control medium for temperature control, i.e. cooling and / or heating, of at least a partial area of ​​the electrical energy storage device. Quite preferably, the fluid is a liquid, which can, for example, be formed at least partially, in particular at least mainly and thus at least more than half, of water. Thus, the second conduction element is used, for example, to guide or conduct the fluid.

[0008] In order to enable a particularly simple and thus time-saving and cost-effective production of the energy storage device, it is now provided according to the invention that the first conduction element is connected to the second conduction element by means of at least one connecting element (also referred to as the first connecting element) which is formed separately from the conduction element. The first connecting element hooks with the second conduction element and is thus fixed to the second conduction element and is thus connected to the second conduction element. Thus, the first conduction element is connected to the second conduction element by means of the first connecting element and is thus held on the second conduction element. Thus, the conduction element is or forms a structural unit, which can also include the first connecting element, for example. The structural unit can be preassembled or preassembled, in particular preassembled independently of the rest of the energy storage device, and can be handled and installed in its preassembled state, in particular as a whole, for example in a housing of the energy storage device, also referred to as the storage device housing, in which, for example, the modules are arranged. Since the structural unit can be preassembled individually and handled and installed in its preassembled state, the energy storage device can be manufactured in a time-saving and cost-effective manner, in particular when the conduction elements have a large length and / or a complex course. For example, the structural unit is or forms a cable or a conductor bundle which can be assembled in a time-saving and cost-effective manner, in particular by connecting the conductor elements to one another by means of first connecting elements and thus holding them together.

[0009] In order to be able to connect the first connecting element to the second conducting element particularly simply and thus time-saving and cost-effectively and thus to produce the electrical energy storage device particularly time-saving and cost-effectively, one embodiment of the invention provides that the connecting element is latched to the second conducting element and is thereby fixed thereto.

[0010] The feature “the first connecting element hooks with the second conducting element, so that the first connecting element is connected to the second conducting element” is to be understood in particular as, for example, at least one first partial region, in particular at least one first wall region of the first connecting element surrounds and / or engages from behind at least one second partial region, in particular at least one second wall region of the second conducting element and thereby cooperates with the second partial region in a form-fitting manner, so that the first connecting element cooperates with the second conducting element in a form-fitting manner and is thereby fixed to the second conducting element. In particular, the first connecting element forms at least one hook connection with the second conducting element, in which, for example, as described above, the first partial region surrounds and / or engages from behind the second partial region. The hook can be, for example, a micro hook. This can be understood in particular as, for example, the first connecting element is supported against, in particular directly supported against, a wall of the second conducting element that is, for example, smooth to the human eye, wherein, for example, the first connecting element is held in contact with, in particular directly supported against, a smooth wall by a spring force that acts in particular in the first connecting element. Even if the wall is smooth to the human eye and therefore has no irregularities to the human eye, the wall has, for example, slight irregularities, with which the first connecting element forms at least one hook, for example by plugging the first connecting element onto the wall. As a result, the first connecting element is hooked with the second conducting element and is thus fixed to the second conducting element. For example, the above-mentioned spring force is generated in such a way that the first connecting element is elastically deformed, in particular due to its interaction with the second conducting element. As a result, the above-mentioned spring force acts as an internal force in the first connecting element, so that the hooking of the first connecting element with the second conducting element is advantageous. The first connecting element cooperates with the second conducting element, for example, in such a way that, for example, the first connecting element is plugged onto the second conducting element. Alternatively or additionally, for example, the first connecting element forms a snap connection with the second conducting element, so that the first connecting element is connected to the second conducting element and is thus fixed to the second conducting element. For example, when the first connecting element is connected to the second conducting element, the first connecting element is at least partially elastically deformed and is thus transferred, for example, from an initial state of the first connecting element to a first elastically deformed state. In the state in which the first connecting element is completed or completely connected to the second conducting element, the first connecting element is, for example, in a first deformation state, so that the first connecting element is elastically deformed and, for example, hooked with the second conducting element. Here, for example, in the first deformation state, the above-mentioned spring force acts in the first connecting element. In addition, it is conceivable that, with further advancement of the first connecting element to the second conducting element, the first connecting element can at least partially or only partially or completely relax after it has been placed in the first elastically deformed state, thereby transferring the first connecting element from the first elastically deformed state to the connected state.For example, in the connected state, the first connecting element is completely relaxed, or in the connected state, the first connecting element is still elastically deformed, but to a lesser extent than in the first elastically deformed state. Thus, for example, the connected state is a second elastically deformed state of the first connecting element. In the connected state, the first connecting element cooperates with the second conducting element, in particular in a form-fitting manner, so that the first connecting element is fixed to the second conducting element. For example, in the connected state, the first connecting element cooperates with the second conducting element in such a way that the first connecting element hooks with the second conducting element, in particular in the manner described above. Thus, for example, the first connecting element is a snap-on connecting element and / or a latching element, which, for example, latches with the second conducting element and is thus connected to the second conducting element, in particular in a form-fitting manner.

[0011] For example, the first connecting element is connected to the second conducting element, in particular in a form-fitting manner, in particular latched, so that, for example, at least one first latching projection of the first connecting element engages around and / or engages behind at least one second latching projection of the second conducting element. As a result, the first connecting element is fixed to the second conducting element. The first connecting element is also called a clip or a connecting clip. The first connecting element is connected to the second conducting element, for example, by means of at least or exactly one plug connection, which, for example, comprises the first connecting element and the second conducting element being inserted into each other. Here, for example, the first connecting element is inserted into the second conducting element. By hooking the first connecting element with the second conducting element and thereby connecting it, the first connecting element is clamped with the second conducting element, so that the first connecting element is also called a clip or a connecting clip.

[0012] In order to be able to connect the connecting element to the second conducting element in a particularly simple and thus time-saving and cost-effective manner, in a further embodiment of the invention it is provided that the first connecting element is plugged onto a part of the second conducting element and hooks into the part of the second conducting element. In particular, it is conceivable that the part of the second conducting element is or comprises the above-mentioned wall of the second conducting element.

[0013] It has proven to be particularly advantageous here if the component of the second conducting element is a rib of the second conducting element, which rib protrudes, for example, from at least one region of the second conducting element adjacent to the rib. The rib itself ends, for example, at a free end of the rib, at which, for example, an edge of the rib, in particular an end edge, is provided or formed. Since the first connecting element is preferably plugged onto the rib and thus onto the edge, the first connecting element is preferably designed as an edge clip. An edge clip is also called an edge clamp and can be fastened to the second conducting element in a particularly simple and therefore time-saving and cost-effective manner by plugging the edge clamp onto the rib and thus onto the edge.

[0014] Another embodiment is characterized in that the part of the second conducting element is formed from plastic. This makes it possible to achieve a particularly advantageous geometry of the part of the second conducting element in a particularly cost-effective manner, so that the first connecting element can be connected to the part of the second conducting element in a simple and therefore time-saving and cost-effective manner.

[0015] In a further particularly advantageous embodiment of the invention, the component of the second conducting element is formed by injection molding, in particular by injection molding of plastic, so that the component of the second conducting element can be produced in a particularly time-saving and cost-effective manner.

[0016] In another particularly advantageous embodiment of the invention, a second connecting element is provided which is separate from the conducting elements and separate from the first connecting element, by means of which the first conducting element is connected to the first connecting element and is thus held on the first connecting element. This makes it possible to hold the first conducting element on the second conducting element via the connecting element particularly simply and thus particularly time-saving and cost-effectively.

[0017] In order to be able to hold the first conducting element particularly easily on the first connecting element and via the first connecting element on the second conducting element, in a further embodiment of the invention it is provided that the second connecting element is designed as a cable tie.

[0018] Finally, it has proven to be particularly advantageous if the electrical energy storage device has a shaft element, also called a cable shaft, which is designed separately from the conducting elements and separately from the first connecting element and preferably separately from the second connecting element. The shaft element has at least or exactly one conducting element shaft, in which the first conducting element and / or the second conducting element at least partially extend and are guided thereby.

[0019] It is quite preferably provided that the first conducting element is held on the shaft element by means of a third connecting element which is designed separately from the conducting elements and from the shaft element and from the first connecting element and from the second connecting element, and is thus connected to the shaft element, for example, the above and below descriptions of the first connecting element can also be transferred to the second connecting element without any problem, and vice versa. It is also conceivable that, for example, the first conducting element is connected to the third connecting element by means of a fourth connecting element, wherein the fourth connecting element is designed to be separate from the conducting elements, separate from the shaft element, separate from the first connecting element, separate from the second connecting element and separate from the third connecting element. In this case, for example, the above and below descriptions of the second connecting element can also be transferred to the fourth connecting element without any problem, and vice versa. This makes it possible to achieve a particularly simple, time-saving and cost-effective assembly of the conducting element.

[0020] A second aspect of the invention relates to a motor vehicle, also referred to as a vehicle for short and preferably designed as a power vehicle, in particular a passenger vehicle, which has an electrical energy storage device according to the first aspect of the invention. Advantages and advantageous embodiments of the first aspect of the invention can be regarded as advantages and advantageous embodiments of the second aspect of the invention, and vice versa.

[0021] The invention is based in particular on the following recognition and consideration: In conventional energy storage devices, conductors such as cables and / or fluid-conducting pipes are usually guided in a corresponding shaft of a shaft element within a limited installation space. The extension of the respective conductor can thereby be determined in a desired and targeted manner. The conductor is usually fixed in the shaft by means of a hinge. However, conventional solutions are complex and can therefore only be produced in a time- and cost-intensive manner. In contrast, the invention now enables the conductor element to be assembled in a simple and therefore time-saving and cost-effective manner and to be fixed to the housing of the storage device described above, for example. In particular, in the fully manufactured state of the electrical energy storage device, for example, the second conductor element is a component located around the first conductor element, to which the first conductor element is fixed in a time-saving and cost-effective manner. The invention also enables particularly advantageous tolerance compensation, in particular by correspondingly designing the length of the edge or rib onto which the first connecting element is preferably plugged, i.e., plugged. In addition, for example, a connection sequence can be defined in order to ensure that all ribs also coincide with the respective position of the first connecting element along the extension of the respective conductor element. A further advantage of the ribs is that an advantageously high rigidity can be achieved.

[0022] It is conceivable that the third connecting element is configured as another edge clip, which is plugged, for example, onto another corresponding rib of the shaft element and thus onto another corresponding edge of the other rib and thus of the shaft element, in particular configured as an end edge. This makes it possible to achieve an advantageously high rigidity of the shaft element. Advantageously, the spacing between the first connecting elements or between the ribs is selected to be large enough to ensure an advantageous tolerance compensation between the ribs on different components. For this purpose, corresponding tolerance calculations and limit mode tests can be performed. If, for example, a plurality of first connecting elements and thus, for example, a plurality of corresponding ribs are used to hold the first conducting element on the second conducting element, it is ensured that the first conducting element is safely and advantageously held on the second conducting element even if some of the first connecting elements are not assembled within the assembly framework. Therefore, the present invention makes it possible to achieve a safe and stable, i.e. fault-tolerant, holding of the first conducting element on the second conducting element. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Further advantages, features and details of the invention are apparent from the following exemplary embodiments and the associated drawings.

[0024] Figure 1A schematic perspective view partially shows an electrical energy storage device for a motor vehicle;

[0025] Figure 2 A partial illustration of the connection arrangement of the first conduction element to the second conduction element of the energy storage device;

[0026] Figure 3 a schematic perspective view partially showing the connection arrangement of the first conducting element on the shaft element of the electrical energy storage device; and

[0027] Figure 4 Partially show the Figure 3 Schematic side view of the connection arrangement.

[0028] In the figures, identical or functionally identical elements are provided with the same reference symbols. DETAILED DESCRIPTION

[0029] Figure 1 A schematic perspective view of a portion of an electrical energy storage device 1 for a motor vehicle, also referred to as a vehicle, is shown. The electrical energy storage device 1 is a high-voltage component, whose voltage, in particular the operating voltage or rated voltage, is preferably greater than 50 volts, in particular greater than 60 volts and quite preferably several hundred volts. The electrical energy storage device 1 is therefore also referred to as a high-voltage storage device (HVS).

[0030] The electrical energy storage device 1 has at least two storage modules 2 and 3, each of which has a plurality of storage cells 4 for storing, in particular electrochemically storing, electrical energy. The storage cells 4 of the respective storage modules 2, 3 are electrically connected to one another, and the storage modules 2 and 3, also referred to as modules for short, are electrically connected to one another. For this purpose, the storage modules 2 and 3 are arranged in a circuit (not shown in detail in the figure), via which the storage modules 2 and 3 are electrically connected to one another. Figure 1 As can be seen in FIG. 1 , the circuit has at least one first conducting element 5, which is therefore arranged in the circuit. The first conducting element 5 is also referred to as a module connector, because the storage modules 2 and 3 are electrically connected to each other via the conducting element 5. In other words, the circuit is closed, for example, by means of the conducting element 5.

[0031] The electrical energy storage device 1 also has at least one battery management unit 6, for example, one of the storage modules 2, 3 is electrically connected to the battery management unit 6 by means of a module connector. Figure 2It can be seen that the energy storage device 1 also has at least one second conduction element 7 which is arranged in addition to the first conduction element 5 and is designed separately from the conduction element 5. For example, the electrical energy stored in the storage cells 4 can be conducted and transmitted by means of the first conduction element 5, for example to an electric motor of a motor vehicle, by means of which the motor vehicle can be driven electrically, in particular purely electrically. For example, the electrical energy stored in the storage cells 4 can be transmitted by means of the second conduction element 7, or at least one electrical signal can be transmitted by means of the conduction element 7, for example to a battery management unit 6, wherein the signal, for example, characterizes, ie indicates or describes at least one temperature of at least one of the storage cells 4 and / or at least one voltage of at least one of the storage cells 4. Alternatively, it is conceivable that the second conduction element 7 is a fluid-conducting conductor, which, for example, has at least or exactly one channel through which a fluid, for example a liquid fluid, can flow. For example, at least a subregion of the energy storage device 1 can be temperature-controlled, ie cooled and / or heated, by means of a fluid. The conduction elements 5 and 7 are designed to be separate from each other, so that they are not integral to each other. In other words, the conducting elements 5 and 7 are not formed of a single piece, but the conducting elements 5 and 7 are separately constructed components.

[0032] In order to manufacture the energy storage device 1 in a time-saving and cost-effective manner and in particular to be able to compensate tolerances in an advantageous manner, it is now provided in the present energy storage device 1 that the first conduction element 5 is connected to the second conduction element 7 by means of a plurality of connecting elements 8 which are separate from the conduction elements 5 and 7 and separate from each other. The respective connecting element 8 is a respective clip, also called a clip. The respective connecting element 8 hooks into the second conduction element 7 and is thus held on the second conduction element 7. Figure 2In the embodiment shown, the respective connecting element 8 is latched with the second conducting element 7 and thus hooked with the second conducting element 7 and thus fixed to the second conducting element 7. In the embodiment shown, the respective connecting element 8 is an edge clip, also referred to as an edge clip. For each connecting element 8, the conducting element 7 has a part designed as a rib 9 of the conducting element 7, which ends at a respective free end E of the respective part, thus of the respective rib 9. At the respective free end E of the respective rib 9, the respective rib 9 has an edge K, also referred to as an end edge, and in the present case the respective connecting element 8 designed as an edge clip is plugged onto the respective associated rib 9 and thus onto the respective associated edge K. In this case, for example, the respective connecting element 8 has at least one first latching projection, which, for example, respectively engages behind a respective second latching projection of the respective associated rib 9, in particular with respect to the plug-in direction, in which the respective connecting element 8 is plugged onto the respective associated rib 9. Since the respective first latching projection engages the respective second latching projection at the rear, the respective connecting element 8 cooperates with the respective rib 9 and thus with the second conducting element 7 in a form-fitting manner, so that the respective connecting element 8 hooks with the respective rib 9 and is thereby fixed to the respective rib 9.

[0033] The respective rib 9 is made of plastic injection molding and is thus produced, i.e. formed, by plastic injection molding, so that the respective rib 9 is formed of plastic. Quite preferably, the ribs 9 are formed integrally with one another, are thus formed from a single part and are produced here by the aforementioned plastic injection molding. The respective connecting element 8 and the respectively associated rib 9 form a respective connecting element pair. For example, a second connecting element 10 is provided for each connecting element pair, which is designed to be separate from the conducting elements 5 and 7 and separate from the connecting element 8. Furthermore, the connecting elements 10 are designed to be separate from one another.

[0034] exist Figure 2 In the embodiment shown, the respective connecting element 10 is a respective cable tie. Figure 2It can be seen particularly well that the respective first conducting element 5 is connected to the respective first connecting element 8 by means of the respective second connecting element 10. Thus, for example, respective partial regions of the respective second connecting elements 10 are connected to one another, in particular connected to one another in a form-fitting manner, in particular latched to one another and thus connected to one another. Thus, for example, the respective connecting elements 10 form respective rings, thus respective rings with respective through-holes, wherein the first conducting element 5 passes through the respective rings. Furthermore, for example, the respective second connecting element 10 passes through at least one corresponding through-hole of the respective connecting element 8, so that the respective connecting element 10 is held on the respective connecting element 8 in a form-fitting manner. Therefore, the conducting element 5 is held on the respective connecting element 10 in a form-fitting manner, and the conducting element 5 is held on the respective connecting element 8 in a form-fitting manner via the respective connecting element 10, which is however fixed to the respective rib 9. Therefore, Figure 2 A first connection arrangement of the conducting element 5 on the conducting element 7 is shown. In the first connection arrangement, the conducting element 5 is held on the rib 9 of the conducting element 7 and thus on the conducting element 7 by means of the connection elements 8 and 10 .

[0035] Figure 3 and Figure 4 A second connection arrangement of the first conducting element 5 on the corresponding shaft element 11 is shown. The shaft element 11 is designed separately from the conducting elements 5 and 7 and separately from the connecting elements 8 and 10. It can be seen that the shaft element 11 has a shaft 12, also called conductor shaft or cable shaft, in which at least one length region L of the conducting element 5 extends and is therefore guided, thus arranged. For example, the shaft element 11 is made of plastic and / or by injection molding. Quite in particular, the shaft element 11 is designed as a single piece and is therefore formed from a single part. For example, the shaft element 11 has a further connecting element 13, by means of which the shaft element 11 is fastened to a housing 15 of the electrical energy storage device 1, also called storage device housing, which can be connected to the energy storage device 1. Figure 1 The housing element 14 is shown. In this case, the storage modules 2 and 3 and also the conducting elements 5 and 7 are arranged in a housing 15 .

[0036] from Figure 4It can be seen particularly well that the first conducting element 5 is locked, in particular directly locked, with the shaft element 11 and thus fixed to the shaft element 11. For this purpose, for example, at least one locking projection 16 engages around or behind at least or exactly one corresponding locking projection 17, wherein the locking projection 16 is the locking projection of the conducting element 5 and the locking projection 17 is the locking projection of the shaft element 11. In particular, the locking projection 16 is pivotably held on the base 18 of the conducting element 5 via a film hinge S, wherein the base 18 and the locking projection 16 are integral with each other and are thus formed from a single part. For example, the conducting element 5 can be placed in a corresponding shaft 12 and thus in the shaft element 11. Then, for example, the locking projection 16 is turned over relative to the base 18 and to the locking projection 17 so that the locking projection 16 engages behind the locking projection 17 and thus is locked with the locking projection 17. As a result, the conducting element 5 is securely fixed in the shaft 12 and on the shaft element 11 .

[0037] The connecting element 13 of the shaft element 11 , which is designed as a latching element and is latched and connected to the housing element 14 , for example, latches with corresponding latching elements, in particular latching elements of the housing element 14 , so that the shaft element 11 can be simply and firmly fixed to the housing element 14 .

[0038] In particular, it is conceivable that the shaft element 11 is connected to the conducting element 5 before the shaft element 11 is connected to the housing element 14, and in particular, it is conceivable that the connecting element 8 is connected to the conducting element 5 by means of the connecting element 10 before the connecting element 8 is inserted onto the respective rib 9. Then, for example, the respective connecting element 8 is inserted onto the respective corresponding rib 9, so that the conducting elements 5 and 7 are connected to each other in a simple and thus time-saving and cost-effective manner. As a result, the conducting elements 5 and 7 form a structural unit that is assembled and thus preassembled, especially independently of the rest of the energy storage device 1, such as a cable harness. The structural unit can then be handled simply and thus assembled in a time-saving and cost-effective manner, especially on the housing element 14, especially as a whole. For example, the structural unit is thus assembled on the housing element 14, especially fixed on the housing element 14, so that the shaft element 11 is fixed to the housing element 14 by means of the connecting element 13. As a result, a particularly time-saving and cost-effective production of the electrical energy storage device 1 can be achieved.

[0039] Furthermore, tolerances can be compensated in a particularly advantageous manner. For this purpose, for example, the respective length of the respective edge K or the respective rib 9 can be designed in terms of tolerance technology in such a way that tolerances can be compensated, ie balanced, in a particularly advantageous manner.

[0040] Reference numerals list

[0041] 1Electric energy storage device

[0042] 2 Storage Modules

[0043] 3 Storage Modules

[0044] 4Storage battery cells

[0045] 5First conduction element

[0046] 6Battery Management Unit

[0047] 7 Second Transmission Element

[0048] 8 First connecting element

[0049] 9 ribs

[0050] 10 Second connecting element

[0051] 11 Hoistway components

[0052] 12 Hoistway

[0053] 13 Connecting elements

[0054] 14 Shell elements

[0055] 15 Housing

[0056] 16 Locking protrusion

[0057] 17 Locking protrusion

[0058] 18 Matrix

[0059] E Free end

[0060] K-edge

[0061] L Length Range

[0062] S Film Hinge

Claims

1. An electrical energy storage device (1) for a motor vehicle, comprising at least two storage modules (2, 3), each of which comprises a plurality of storage cells (4) for storing electrical energy which are electrically connected to one another and are arranged in a circuit having at least one first conducting element (5), via which the storage modules (2, 3) are electrically connected to one another; and comprising at least one second conducting element (7) which is designed separately from the first conducting element (5), It is characterized in that The first conducting element (5) is connected to the second conducting element (7) by means of at least one connecting element (8) which is formed separately from the conducting elements (5, 7) and which hooks into the second conducting element (7) and is thereby fixed to the second conducting element (7).

2. The electrical energy storage device (1) according to claim 1, It is characterized in that The connecting element (8) is latched with the second conducting element (7) and is thereby fixed to the second conducting element (7).

3. The electrical energy storage device (1) according to claim 1 or 2, It is characterized in that The connecting element (8) is inserted into a part (9) of the second conducting element (7) and hooked with the part (9) of the second conducting element (7).

4. The electrical energy storage device (1) according to claim 3, It is characterized in that The component (9) is a rib (9) of the second conducting element (7).

5. The electrical energy storage device (1) according to claim 3 or 4, It is characterized in that The component (9) is formed from plastic.

6. The electrical energy storage device (1) according to any one of claims 3 to 5, It is characterized in that The component (9) is formed by injection molding.

7. Electrical energy storage device (1) according to one of the preceding claims, It is characterized in that A second connecting element (10) is provided which is separate from the conducting elements (5, 7) and separate from the connecting element (8), and the first conducting element (5) is connected to the first connecting element (8) by means of the second connecting element.

8. The electrical energy storage device (1) according to claim 5, It is characterized in that The second connecting element (10) is designed as a cable tie.

9. Electrical energy storage device (1) according to one of the preceding claims, It is characterized in that A shaft element (11) is provided which is separate from the conducting elements (5, 7) and separate from the connecting element (8), and has a conducting shaft (12) in which the first conducting element (5) and / or the second conducting element (7) at least partially extends.

10. A motor vehicle having an electrical energy storage device (1) according to one of the preceding claims.

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