Electrical energy store for motor vehicle, in particular for motor vehicle

Abstract

The invention relates to an electrical energy store (1) for a motor vehicle, comprising a plurality of storage cells (2) for storing electrical energy and comprising a plurality of temperature control elements (5c) through which a temperature control medium can flow, by means of which temperature control elements the storage cells (2) can be temperature-controlled by means of a temperature control medium. According to the invention, a distribution element (6) is provided which is common to the temperature control elements (5c) and through which a temperature control medium can flow, into which distribution element a respective connecting piece (7c) of the temperature control elements (5c) is inserted, whereby the temperature control elements (5c) are in fluid communication with the distribution element (6), the distribution element (6) has a distribution channel (8) which is common to the temperature control elements (5c) and through which the temperature control medium can flow. The distribution element (6) comprises at least one or exactly one through-flow opening (11c) for each temperature control element (5c), through which through-flow opening the temperature control medium can flow, into which through-flow opening a respective connecting piece (7c) of a respective temperature control element (5c) is inserted, and wherein the respective connecting piece (7c) projects at least partially into the distribution channel (8).

Description

Technical Field

[0001] The invention relates to an electrical energy store for a motor vehicle, in particular for a car, according to the preamble of claim 1 . Background Art

[0002] EP2795713B1 discloses a battery module, which includes a battery module housing having a component made of plastic and a plurality of prismatic battery cells, wherein the battery cells have a cell housing with four side walls. In addition, JP2018 / 536133A1 discloses a cooling system. Summary of the invention

[0003] The object of the present invention is to specify an electrical energy store for a motor vehicle in which particularly advantageous temperature control, ie cooling and / or heating, can be achieved in a particularly advantageous manner.

[0004] This object is achieved according to the invention by an electrical energy store having the features of claim 1. Advantageous embodiments of the invention are the subject matter of the dependent claims.

[0005] The present invention relates to an electric energy storage device for a motor vehicle, also referred to as a vehicle, which is preferably configured as an automobile, especially a passenger car. This means that the motor vehicle, which is preferably configured as an automobile, especially a passenger car and also referred to as a vehicle, has an electric energy storage device in its fully manufactured state. With the help of the electric energy storage device, electrical energy is to be stored or has been stored, especially electrochemically. For this purpose, the electric energy storage device has a storage cell, in which the electrical energy is stored, especially electrochemically, or by means of the storage cell. In particular, the storage cells are electrically connected to each other. The storage cell is a single cell, and is therefore a component that is independently constructed from each other. Preferably, the electric energy storage device is a high-voltage component, the voltage, especially the electrical operating voltage or the nominal voltage of which is preferably greater than 50 volts, especially greater than 60 volts and is completely preferably several hundred volts. Preferably, the motor vehicle also has at least one motor in its fully manufactured state, by means of which the motor vehicle can be driven, especially purely electrically. For this purpose, the motor can be supplied with the electrical energy stored in the energy storage device. The electric machine is very preferably a high-voltage component, the voltage, in particular the electrical operating voltage or the nominal voltage of which is preferably greater than 50 volts, in particular greater than 60 volts and very preferably several hundred volts. Very particularly, the electrical energy storage device is a battery also referred to as a secondary battery or designed as a secondary battery, which battery can be designed in particular as a high-voltage battery (HV battery). The storage cell is therefore preferably a battery cell or the storage cell is also referred to as a battery cell.

[0006] For example, the storage cell can be configured as a round cell, which is cylindrically configured on the outer circumference and thus has the shape of a right circular cylinder. The above and following embodiments can of course also be transferred to other storage cells, such as storage cells with prismatic outer circumferences.

[0007] The electric energy storage device also has a plurality of temperature control elements through which a preferably liquid temperature control medium can flow, and through which the storage unit is temperature controlled, i.e. cooled and / or heated, by means of the temperature control medium. In particular, the temperature control medium is a liquid, which can, for example, at least contain or include water. In particular, when the temperature control medium has a higher temperature than the storage unit, the temperature control medium is a heating medium or acts as a heating medium, by means of which the storage unit is heated. For this purpose, heat is transferred from the temperature control medium to the storage unit through the temperature control element. In particular, when the temperature control device has a lower temperature than the storage unit, the temperature control medium is a cooling medium or acts as a cooling medium, by means of which the storage unit is cooled. For this purpose, heat is transferred from the storage unit to the temperature control medium or to the temperature control medium through the corresponding temperature control element.

[0008] In particular, the temperature control elements are designed separately from one another and are therefore separate individual components. In particular, the temperature control media are at least partially fluidically separated from one another. This can be understood in particular as follows: The corresponding temperature control element has, for example, at least one or exactly one temperature control channel through which the temperature control medium can flow.

[0009] For example, the respective temperature control channels are in particular directly defined by the circumference of the respective inner circumference of the respective temperature control element. The temperature control channels are at least partially fluidically separated from one another. Thus, for example, respective partial quantities or respective partial flows of the temperature control medium can flow through the respective temperature control channels and thus through the respective temperature control elements, wherein it is in particular provided that the partial quantities or partial flows do not mix with one another during their flow through the temperature control element and thus through the temperature control channels. In other words, for example, the partial quantities or partial flows flow separately through the temperature control channels and thus through the temperature control elements.

[0010] In order to be able to achieve particularly advantageous temperature control in a particularly advantageous manner, it is provided according to the invention that the electrical energy storage device has a distribution element common to the temperature control element and through which the temperature control medium can flow, and into which the corresponding connection pipe of the temperature control element is inserted. The temperature control element and thus its temperature control channel are fluidically connected to the distribution element. The temperature control element can thus be supplied with a temperature control medium flowing through the distribution element from the distribution element via the distribution element. In other words, for example, the temperature control medium flowing through the distribution element can be discharged from the distribution element through the connection pipe and introduced into the corresponding temperature control element, so as to supply the temperature control element with the temperature control medium.

[0011] In addition, it is conceivable that by making the temperature control element, and therefore its temperature control channel, fluidly connected to the distribution element, the temperature control medium flowing through the temperature control element is discharged from the temperature control element and especially introduced into the distribution element. In other words, for example, the temperature control medium flowing through the temperature control element can be discharged from the temperature control element through the connecting pipe and introduced into the distribution element.

[0012] The temperature control element has in particular a distribution channel through which a temperature control medium can flow and which is common to the temperature control element, and the distribution channel is a distribution channel common to the temperature control channel. In the flow direction of the temperature control medium that flows through the distribution element, thus flows through the distribution channel and the temperature control element, thus flows through the temperature control channel and flows from the distribution element, thus flows from the distribution channel into the temperature control element, and thus flows into the temperature control channel, the distribution channel is arranged upstream of the temperature control channel, so that the temperature control medium first flows through the distribution channel and then flows through the temperature control channel and thus flows through the temperature control element on its path toward the temperature control element and into the temperature control element. Here, the temperature control channel can be flowed through by the previously mentioned partial amount or partial flow. For example, the partial amount or partial flow forms or derives the total amount or total flow of the temperature control medium in the sum, and the total amount or total flow of the temperature control medium flows through the distribution channel and thus flows through the distribution element. In other words, on its path toward the temperature control element and into the temperature control element, therefore toward the temperature control channel and into the temperature control channel, the total flow or total amount first flows through the distribution channel and thus flows through the distribution element. The total flow is divided into partial flows, i.e. distributed into partial flows and thus distributed to the connecting pieces and the temperature control elements, so that the corresponding connecting pieces and thus the corresponding temperature control elements are flowed through by the corresponding partial flows. In particular, after the partial flows, for example, flow through the temperature control element, the partial flows, for example, are combined again and in particular mixed, so that, for example, the partial flows - but then downstream of the temperature control element - once again form the total flow.

[0013] Since the connection pipes, which are also simply referred to as pipes, are each at least partially inserted into the distribution element, large tolerances, in particular positional tolerances, between the individual temperature control elements and / or between the respective individual temperature control elements and the distribution element can also be compensated, so that the electrical energy store can be assembled, that is to say manufactured, in a particularly simple and therefore time-efficient and cost-efficient manner. Within the scope of manufacturing the energy store, for example, the connection pipes are positioned directly into the distribution element in a protruding manner, in particular by the connection pipes being inserted directly into the distribution element and thus already inserted. In particular, a particularly space-saving design can be achieved by the invention.

[0014] In particular, it is provided that the temperature control elements are designed separately from one another. Furthermore, the temperature control elements are designed separately from the distribution element, so that the connection pieces are designed separately from one another and separately from the distribution element. In this case, the corresponding connection pieces designed separately from the distribution element are in particular directly inserted into the distribution element, thereby making it possible to produce or assemble the electrical energy store in a particularly simple manner and thus in a time- and cost-effective manner.

[0015] In particular, the invention and in particular the advantageous tolerance compensation make it possible to automatically mount a connection piece which is, for example, automatically inserted into a distributor element during assembly.

[0016] If, for example, the temperature regulating element is supplied with a temperature regulating medium from the distribution element through the connecting pipe, for example, the temperature regulating medium flows through the distribution element, especially the distribution channel, along the first flow direction or in the first flow direction on its path through the distribution element and toward the connecting pipe. Here, the distribution element or the distribution channel is arranged upstream of the temperature regulating element in the flow direction of the temperature regulating medium, that is, along the first flow direction. However, if, for example, the temperature regulating medium is output from the temperature regulating element through the connecting pipe, that is, it is exported and introduced into the distribution element, especially the distribution channel, the temperature regulating medium flows through the distribution element, especially through the distribution channel, along the second flow direction or in the second flow direction. Here, the distribution element or the distribution channel is arranged downstream of the temperature regulating element in the flow direction of the temperature regulating medium, that is, along the second flow direction. Supplying the temperature regulating element with the temperature regulating medium from the distribution channel is also referred to as the supply of the temperature regulating element. The temperature regulating medium is exported from the temperature regulating element through the connecting pipe to the distribution element, especially the distribution channel, which is also referred to as the removal or cleaning of the temperature regulating element.

[0017] Furthermore, the invention provides that the connecting element has a common distribution channel for the temperature control elements and through which the temperature control medium can flow, and has at least one or exactly one flow opening for each temperature control element through which the temperature control medium from the distribution channel can flow. If the distribution element is used to supply the temperature control element, the corresponding flow opening through which the temperature control medium can flow is an outlet opening, which is arranged downstream of the distribution channel in the flow direction of the temperature control medium, that is, along the first flow direction. If the distribution element is used to remove the temperature control element, the corresponding flow opening through which the temperature control medium can flow is arranged upstream of the distribution channel in the flow direction of the temperature control medium, that is, along the second flow direction.

[0018] The corresponding connecting pipe of the corresponding temperature control element is inserted into the corresponding flow opening. When supplying the temperature control element, the temperature control medium can be discharged from the distribution channel and introduced through the corresponding flow opening, that is, introduced into the corresponding temperature control element, especially the corresponding temperature control channel. When clearing the temperature control element, the temperature control medium can be discharged from the corresponding temperature control element, especially from the corresponding temperature control channel, through the corresponding flow opening and introduced into the distribution element, especially the distribution channel.

[0019] Preferably, the through-flow openings are separated from each other. This should be understood as that corresponding, in particular solid wall regions of the distribution element are arranged between the through-flow openings. For example, the through-flow openings are circular in shape. In this embodiment, a particularly advantageous assembly of the electrical energy storage device can be achieved.

[0020] In order to be able to mount the temperature control element on the distribution element and thus on the energy storage device in a particularly advantageous manner as a whole, it is further provided that the corresponding connecting pipe at least partially extends into the distribution channel. In other words, it is preferably provided that the corresponding connecting pipe is inserted into the flow opening and thus into the distribution element, in particular along its longitudinal extension direction, to such an extent or such a depth that the corresponding connecting pipe at least partially extends into the distribution channel. It is therefore particularly conceivable that the connecting pipe extends from the flow opening on a first side of the flow opening arranged in the distribution channel and thus extends into the distribution element and in particular into the distribution channel, and that, for example, on a second side of the flow opening opposite to the first side, the connecting pipe extends from the flow opening and in particular from the distribution element and is thus arranged on the surroundings of the distribution element, thereby enabling particularly advantageous mounting.

[0021] A further embodiment is characterized in that the respective connection piece engages from behind a respective wall region of the distribution element arranged in the distribution channel, whereby the respective connection piece is held on the distribution element and is thus mechanically connected to the distribution element. This makes it possible to achieve particularly advantageous assembly, in particular by inserting the respective connection piece so far or so deeply into the respective throughflow opening that the respective connection piece engages from behind, that is to say hooks from behind, the respective wall region. This makes it possible to ensure that the respective connection piece is held mechanically on the distribution element particularly reliably in a particularly simple and therefore time-saving and cost-effective manner.

[0022] In a further particularly advantageous embodiment of the invention, it is provided that the respective connection piece has, at its respective end facing the distribution channel and in particular at the free end, a respective insertion bevel which extends obliquely to the plugging direction in which the respective connection piece is inserted into the respective flow opening. For example, the respective insertion bevel extends in a respective plane which extends obliquely to the plugging direction, or the insertion bevel is, for example, conical. As a result, the respective connection piece can be particularly easily inserted into the respective flow opening, so that a particularly simple and therefore time- and cost-effective assembly can be achieved.

[0023] In order to be able to compensate tolerances particularly advantageously and thus achieve particularly advantageous assembly, it is provided in a further embodiment of the invention that the respective throughflow openings are formed in respective first length regions of the distribution element. Viewed along the extension direction of the distribution element, which is designed as a longitudinal extension direction, for example, a respective second length region of the distribution element is arranged between each two first length regions. Here, the respective second length region is designed to be elastically deformable along the extension direction. As a result, particularly viewed along the extension direction, tolerances, in particular orientation tolerances or position tolerances, can be compensated, that is to say compensated, particularly advantageously and simply.

[0024] In order to be able to compensate, ie to equalize, tolerances, in particular position tolerances, in a particularly advantageous and simple manner, it is provided in a further embodiment of the invention that the respective second length region is designed as a bellows.

[0025] In a further particularly advantageous embodiment of the invention, it is provided that the respective first length region is formed from a first material and the respective second length region is formed from a second material which is softer and / or more elastic than the first material. This makes it possible, for example, to set the length of the distribution element in the extension direction particularly advantageously, in particular without causing damage to the distribution element. This makes it possible to compensate tolerances particularly advantageously.

[0026] The first material and the second material are, for example, corresponding plastics. It is particularly conceivable that the distribution element is manufactured by injection molding, especially by plastic injection molding. It is completely preferred that the distribution element is constructed as a two-component plastic part, especially as a two-component injection molded part, wherein the distribution element is also called a double K plastic part. When manufacturing the distribution element, for example, the first part of the distribution element is first manufactured, especially by injection molding, and then, for example, the second part of the distribution element is sprayed onto the first part, especially by injection molding. Here, for example, the first part is made of a plastic in the plastic or a material in the material and the second part is made of another plastic or material. Therefore, in the fully manufactured state of the distribution element, the second part is sprayed on the first part. For example, the first part is composed of the first material and the second part is composed of the second material.

[0027] In order to be able to achieve particularly advantageous temperature control in a particularly advantageous and simple manner, it is provided in another design of the present invention that the distribution element has at least one throttling element, and the partial area of ​​the flow cross section of at least one of the connecting pipes through which the temperature control medium can flow is covered by means of the throttling element and is thus fluidly closed. This means that the one connecting pipe is throttled in particular relative to at least another connecting pipe in each connecting pipe. Thus, it is particularly advantageous to distribute or distribute the temperature control medium to the temperature control element, especially when supplying and / or removing the temperature control element, so that at least substantially uniform, that is, homogeneous temperature control of the storage unit can be achieved. In particular, it is conceivable that a throttled connecting pipe is arranged upstream of another, particularly non-throttling or not so strongly throttled connecting pipe in the flow direction of the temperature control medium flowing through the distribution channel, especially when the supply is provided, so that at least substantially uniform temperature control can be achieved. The throttling element is a throttle valve or acts as a throttle valve, so that the temperature control medium can be distributed or distributed to the connecting pipe and thus distributed or distributed to the temperature control element.

[0028] By forming the respective first length region from the first material, an advantageous stability, that is to say strength or rigidity, of the respective first length region can be achieved, so that, for example, the respective connection piece can be inserted particularly advantageously into the respective throughflow opening. In particular, a particularly advantageous stability or robustness of the respective first length region with respect to radial pressure forces can thereby be ensured, so that, in particular, automated assembly can be achieved. In automated assembly, for example, the connection piece is inserted into the throughflow opening in an automated manner, that is to say automatically and, in this case, for example, by means of a robot.

[0029] Finally, in order to achieve particularly advantageous temperature control, it has been shown to be particularly advantageous that the distribution element has a first material and a second material that is softer and / or more elastically deformable relative to the first material. The second material can be a second material. Alternatively or additionally, the first material is a first material. Here, the corresponding connecting pipe is sealed relative to the distribution element by means of the second material. This makes it possible, for example, to achieve a pressure-supported seal. It has been shown to be advantageous here that, as mentioned above, the distribution element is constructed as a two-component plastic part, which is manufactured by injection molding and here from each of the materials mentioned. Here, for example, the second material and the first material are injected. In particular, it is conceivable that the second material, in particular its connecting pipe, constitutes a corresponding sealing element, for example, constructed as a sealing lip, with the help of which the corresponding connecting pipe is particularly advantageously sealed relative to the distribution element.

[0030] Furthermore, it has proven to be particularly advantageous if the corresponding connecting piece has a corresponding step in order, for example, to avoid an undesired detachment or separation of the distributor element and / or to absorb separation forces from the fluid pressure, in particular the temperature control medium. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Further details of the present invention are obtained from the following description of preferred embodiments in conjunction with the accompanying drawings. Here, it is shown:

[0032] Figure 1 A schematic sectional view showing a portion of an electrical energy store for a motor vehicle according to a first specific embodiment;

[0033] Figure 2 A further schematic sectional view showing a detail of the electrical energy store according to the first embodiment; and

[0034] Figure 3 A schematic sectional view shows a detail of a second specific embodiment of an electrical energy store. DETAILED DESCRIPTION

[0035] In the figures, identical or functionally identical elements are provided with the same reference symbols.

[0036] Figure 1 and Figure 2A first embodiment of an electrical energy storage device 1, also referred to as an energy storage device, for a motor vehicle, also referred to as a vehicle, is shown in schematic cross-sectional views in sections. The electrical energy storage device 1 has a plurality of storage cells 2, which are designed as round cells in the exemplary embodiment shown in the figure. It can be seen that the storage cells 2 are arranged in rows, so that the first storage cells in the storage cells 2 form a first cell row R1, the second storage cells in the storage cells 2 form a second cell row R2, the third storage cells in the storage cells 2 form a third cell row R3, and the fourth storage cells in the storage cells 2 form a fourth cell row R4. The respective storage cells 2 forming the respective cell rows R1-4 are arranged one after another along a first direction indicated by a double arrow 3, i.e., arranged one after another, wherein the cell rows R1-4 are arranged side by side and therefore one after another along a second direction extending perpendicularly to the first direction and indicated by a double arrow 4.

[0037] The electrical energy storage device 1 also comprises a plurality of temperature control elements 5a-c. It can be seen that the temperature control elements 5a-c are arranged one after another along the second direction (double arrow 4), and are arranged in such a way that the temperature control element 5a is arranged between the cell rows R1 and R2 along the second direction, the temperature control element 5b is arranged between the cell rows R2 and R3 along the second direction, and the temperature control element 5c is arranged between the cell rows R3 and R4 along the second direction. A temperature control medium, which is preferably liquid and therefore preferably designed as a liquid, can flow through the respective temperature control elements 5a-c, wherein the temperature control medium can be a component of the energy storage device 1. It can be seen that the respective temperature control elements 5a-c are designed as waves when viewed in a plane spanned by the first direction and by the second direction. As a result, the temperature control elements 5a-c can be particularly advantageously and particularly closely attached to the corresponding storage cells 2 in a planar manner, so that particularly advantageous temperature control, i.e. cooling and / or heating of the corresponding storage cells 2 can be achieved by the corresponding temperature control elements 5a-c by means of the corresponding temperature control medium flowing through the corresponding temperature control elements 5a-c. In particular, the temperature control elements 5a-c are arranged in a temperature control circuit of the electrical energy storage device 1 through which the temperature control medium can flow. The temperature control elements 5a-c are designed to be separate from the storage cells 2 and separate from each other.

[0038] In order to now achieve particularly advantageous temperature control of the storage cells 2 in a particularly advantageous manner, the energy store 1 has a distribution element 6 which is common to the temperature control elements 5 a - c and is separate from the storage cells 2 and is designed separately from the temperature control elements 5 a - c and is also called a distribution tube or is designed as a distribution tube.

[0039] The distribution element 6 is a distribution element common to the temperature control elements 5a-c and through which a preferably liquid temperature control medium can flow, and into which the corresponding connecting pipes 7a-c of the corresponding temperature control elements 5a-c are inserted. As a result, the temperature control elements 5a-c are at least fluidly connected to the distribution element 6, so that the temperature control medium that first flows through the distribution element 6 flows through the connecting pipes 7a-c and thus flows out of the distribution element 6, flows into the temperature control elements 5a-c and can thus flow through the temperature control elements 5a-c. Therefore, the temperature control elements 5a-c can be supplied with the temperature control medium from the distribution element 6 that flows through the distribution element 6 via the distribution element 6. Therefore, in the embodiment shown in the drawings, the distribution element 6 is used to supply the temperature control elements 5a-c with the temperature control medium.

[0040] It can be seen that the distribution element 6 has, in particular, a distribution channel 8 in its interior, which is completely, in particular directly, defined by a circumferential surface 9 on the inner circumference of the distribution element 6. In this case, the respective temperature control element 5a-c has a respective temperature control channel 10a-c, through which a respective temperature control medium can flow, which flows through the respective connection pipe 7a-c. The respective through-flow openings of the distribution element 6, which are designed as outlet openings 11a-c here, are assigned to the respective connection pipe 7a-c, wherein the respective connection pipe 7a-c is connected in particular along Figure 1 The plugging direction shown by arrow 12 is inserted into the corresponding outlet 11a-c of the distribution element 6 assigned thereto. Here, the plugging direction extends in a plane spanned by the first direction and the second direction or parallel to the plane. For example, the plugging direction extends parallel to the first direction (double arrow 3).

[0041] The respective connection piece 7a-c is inserted into the respective outlet opening 11a-c so deeply or so far in the plug-in direction that the respective connection piece 7a-c at least partially protrudes into the distribution channel 8 and is therefore arranged in the distribution channel 8. This can be seen from Figure 2 This can be seen particularly clearly in.

[0042] from Figure 2It can be seen particularly clearly in the figure that the corresponding connecting pipe 7a-c, in particular when viewed from the rear along the plug-in direction, engages the corresponding wall area W of the distribution element 6 arranged in the distribution channel 8. As a result, the corresponding connecting pipe 7a-c is also mechanically connected to the distribution element 6 and is therefore held on the distribution element 6. For this purpose, the corresponding connecting pipe 7a-c has a corresponding flange 13a-c, which engages from the rear and therefore hooks the corresponding wall area W from the rear. In addition, the corresponding connecting pipe 7a-c has, for example, a conical introduction bevel 14 on its corresponding, in particular free end E facing the distribution channel 8, which extends obliquely to the plug-in direction. At present, the corresponding introduction bevel 14 is formed by the corresponding flange 13a-c. When the corresponding connecting pipe 7a-c is inserted into the distribution element 6, in particular into the corresponding outlet 11a-c, the introduction bevel 13a-c advantageously slides on the distribution element 6, whereby the corresponding connecting pipe 7a-c can be particularly simply and therefore time- and cost-effectively inserted into the distribution element 6.

[0043] The respective discharge openings 11a-c are constructed on the respective first length regions L1 of the distribution element 6. Along the extension direction of the distribution element 6, which is illustrated by the double arrow 4 and is currently constructed as the longitudinal extension direction, the distribution element is constructed in an elongated manner along the extension direction, and between each two first length regions L1 of the distribution element 6, a respective second length region L2 of the distribution element 6 is arranged. The respective second length region L2 is constructed elastically deformable along the extension direction illustrated by the double arrow 4, and is constructed, for example, in this case, so that the respective second length region L2 is constructed as a bellows. In addition, it is provided that at least a first portion T1 of the respective first length region L1 is formed by a first material, which is also referred to as the first material. The respective second length region L2 is formed by a second material, which is also referred to as the second material. Here, the second material is softer than the first material, so that the second material can be deformed more elastically than the first material. The respective second portion T2 of the respective first length region L1 is formed by a second material, wherein in the first embodiment, it is provided that the respective discharge openings 11a-c are in particular directly defined by the second material. Thus, the corresponding second part T2 of the corresponding first length region L1 is or forms a corresponding sealing element, which can be particularly advantageously pressed against the corresponding connecting pipe 7a-c, in particular, against the circumferential surface 14 of the corresponding outer peripheral side of the corresponding connecting pipe 7a-c, so that the corresponding connecting pipe 7a-c is particularly advantageously sealed relative to the distribution element 6 by means of the corresponding second part T2.

[0044] The sections T1 and T2 and the length regions L1 and L2 are preferably designed in one piece with one another. It is preferably provided that the first material and the second material are corresponding plastics. In other words, the first material can be a first plastic and the second material can be a second plastic. It is therefore conceivable that the distribution element 6 is designed as a two-component plastic part, wherein the distribution element 6 is manufactured in particular by injection molding. When manufacturing the distribution element 6, for example, the materials are injected into one another, in particular the second material and the first material. This makes it possible to realize the distribution element 6 in a simple and therefore time- and cost-effective manner.

[0045] Figure 3 A second embodiment of the energy storage device 1 is partially shown in a schematic cross-sectional view. In the second embodiment, the distribution element 6 has at least one throttling element 15. In the second embodiment, the throttling element 15 is formed by a second portion T2 of one of the length regions L1, so that the throttling element 15 is formed from a second material. Figure 3 It can be seen that the throttling element 15 covers and thereby fluidically blocks a first partial region TB1 of the flow cross section Q of the connecting pipe 7c through which the temperature control medium can flow, wherein a second partial region TB2 of the flow cross section Q, in particular directly connected to the first partial region TB1, is released and can therefore be flowed through by the temperature control medium.

[0046] exist Figure 3 , the flow direction in which the temperature-control medium flows through the distribution channel 8 and thus through the distribution element 6 on its way through the distribution element 6 and toward the connecting pieces 7a-c is indicated by the arrow 16. With respect to this flow direction, the outlet openings 11a-c are arranged downstream of the distribution channel 8. It can be seen that with respect to the flow direction of the temperature-control medium indicated by the arrow 16, the connecting piece 7c, whose flow cross section Q is partially blocked and thus throttled by the throttling element 15, is arranged upstream of the other connecting pieces 7a and 7b, whose flow cross section Q is, for example, not throttled or is throttled less than the flow cross section Q of the connecting piece 7c. This makes it possible to distribute or distribute the temperature-control medium from the distribution channel 8 at least substantially uniformly to or in the connecting pieces 7a-c and thus to or in the temperature-control elements 5a-c, so that at least substantially uniform and thus homogeneous temperature control of the storage cells 2, in particular the cell rows R1-4, can be achieved.

[0047] Reference numerals list

[0048] 1Electric energy storage device

[0049] 2 Storage Unit

[0050] 3 double arrows

[0051] 4 double arrows

[0052] 5a-c Temperature control element

[0053] 6 Distribution elements

[0054] 7a-c connection pipe

[0055] 8 distribution channels

[0056] 9Inner circumference

[0057] 10a-c temperature control channel

[0058] 11a-c discharge outlet

[0059] 12 Arrows

[0060] 13a-c flange

[0061] 14 Outer peripheral surface

[0062] 15Throttling element

[0063] 16 Arrows

[0064] E end

[0065] L1 first length region

[0066] L2 second length area

[0067] QFlow cross section

[0068] R1-4 single row

[0069] T1 Part 1

[0070] T2 Part 2

[0071] TB1 Part I Area

[0072] TB2 Part 2 Area

Claims

1. An electrical energy storage device (1) for a motor vehicle, comprising a plurality of storage cells (2) for storing electrical energy and a plurality of temperature control elements (5a-c) through which a temperature control medium can flow, and by means of which the temperature of the storage cells (2) can be controlled by means of the temperature control medium. It is characterized in that A distribution element (6) is provided which is common to the temperature control elements (5a-c) and through which a temperature control medium can flow, wherein corresponding connecting pipes (7a-c) of the temperature control elements (5a-c) are inserted into the distribution element, whereby the temperature control elements (5a-c) are fluidically connected to the distribution element (6), wherein the distribution element (6) has: - a distribution channel (8) which is common to all of the temperature control elements (5a-c) and through which a temperature control medium can flow; and - at least one or exactly one flow opening (11a-c) for each temperature control element (5a-c), through which a temperature control medium can flow, into which a corresponding connecting piece (7a-c) of the corresponding temperature control element (5a-c) is inserted, and wherein the corresponding connecting piece (7a-c) at least partially extends into the distribution channel (8).

2. The electrical energy storage device (1) according to claim 1, characterized in that The respective connection pieces (7a-c) engage from behind a respective wall region (W) of the distribution element (6) which is arranged in the distribution channel (8), whereby the respective connection pieces (7a-c) are held on the distribution element (6).

3. The electrical energy storage device (1) according to claim 1 or 2, characterized in that The respective connecting pipes (7a-c) have respective introduction bevels (17) at their respective ends (E) facing the distribution channel (8), the introduction bevels extending obliquely to the plug-in direction (12), in which the respective connecting pipes (7a-c) are inserted into the respective flow openings (11a-c).

4. The electrical energy store (1) according to claim 1, characterized in that The corresponding through-flow openings (11a-c) are arranged in corresponding first length regions (L1) of the distribution element (6), wherein, viewed along the extension direction (4) of the distribution element (6), a corresponding second length region (L2) of the distribution element (6) is arranged between every two first length regions (L1), and the corresponding second length region (L2) of the distribution element is configured to be elastically deformable along the extension direction (4).

5. The electrical energy storage device (1) according to claim 4, characterized in that The respective second length region (L2) is designed as a bellows.

6. The electrical energy storage device (1) according to claim 4 or 5, characterized in that The respective first length region (L1) is at least partially formed from a first material, and the respective second length region (L2) is formed from a second material that is softer and / or more elastic than the first material.

7. Electrical energy storage device (1) according to any one of the preceding claims, characterized in that The distributor element (6) has at least one throttle element (15), by means of which a partial region (TB1) of a flow cross section (Q) through which a temperature control medium can flow is covered and thereby fluidically blocked of at least one of the connection pieces (7a-c).

8. Electrical energy storage device (1) according to any one of the preceding claims, characterized in that The distribution element (6) comprises a first material and a second material which is softer and / or more elastically deformable than the first material and by means of which the respective connection piece (7a-c) is sealed relative to the distribution element (6).

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