Batteries and applications of such batteries

Abstract

The present invention relates to a battery, comprising a first housing element and a second housing element, which together form an internal space for accommodating a battery module, wherein a plurality of battery cells of the battery module which are electrically conductively connected in series and / or in parallel are arranged in the internal space, wherein the battery cells are particularly prismatically configured and furthermore a first element of a battery control device is arranged in the internal space, wherein the first housing element forms a first temperature control structure on a side facing away from the internal space and in particular facing away from the second housing element, wherein the second housing element forms a second temperature control structure on a side facing towards the internal space and in particular facing towards the first housing element, and a covering element is connected to the second housing element in such a way that the covering element defines a temperature control fluid receiving portion through which a temperature control fluid can flow in a fluid-tight manner relative to the internal space, and the second temperature control structure is configured so that a temperature control fluid can flow around it.

Description

Technical Field

[0001] The invention is based on a battery. The use of this battery is also the subject of the invention. Background Art

[0002] It is known from the prior art that a battery module has a plurality of individual battery cells, each of which has a positive voltage tap and a negative voltage tap, wherein, for the electrically conductive series and / or parallel connection of a plurality of battery cells with one another, the corresponding voltage taps are electrically conductively connected to one another and can thus be connected together to form a battery module. The battery modules themselves are connected together to form batteries or battery systems. Due to the large number of different possible vehicle installation spaces, variable module sizes are sought to be achieved in order to be able to optimally utilize the existing installation space.

[0003] Furthermore, the battery cells of the battery modules (such as lithium-ion battery cells or lithium-polymer battery cells) heat up during operation due to their electrical resistance during power output or power consumption due to chemical conversion processes. These processes are relatively pronounced in particular when energy output or energy absorption is relatively fast. The higher the power of the battery or battery module, the more significant the heating that occurs and the resulting requirements for an effective temperature control system. In order to increase the safety of the battery module and also to ensure the power capacity of the battery cells, the battery cells of the battery module must be heated as well as cooled so that they can be operated within a specific temperature range as far as possible, so that, for example, increased aging characteristics or decomposition of the chemical components of the cells can be prevented. However, the battery cells should mainly be cooled.

[0004] For example, the temperature control, ie the heating or cooling of the battery can be implemented by liquid temperature control using a water / ethylene glycol mixture. Here, the mixture is guided through a cooling plate arranged below the battery module. The cooling plate can be connected to the corresponding components of the cooling circuit. Summary of the invention

[0005] A battery having the features described in accordance with the invention offers the advantage that the temperature control of the individual components of the battery can be coordinated with their respective requirements. In particular, by configuring the two temperature control fluid receptacles as temperature control spaces, the requirements for temperature control of a plurality of battery cells and a component of a power electronics can be coordinated and optimized separately from one another. It is thus possible to separate the optimization of temperature control or heat dissipation of a plurality of battery cells from the optimization of temperature control or heat dissipation of a component of a power electronics.

[0006] To this end, a battery is provided according to the present invention. The battery includes a first housing element and a second housing element. The first housing element and the second housing element are jointly configured to accommodate an internal space of a battery module. Here, a plurality of battery cells of the battery module are arranged in the internal space. The plurality of battery cells are electrically conductively connected in series and / or in parallel to each other. In particular, the battery cells are configured as prismatic cells. Preferably, the plurality of battery cells are configured as lithium-ion battery cells.

[0007] Furthermore, a first element of the battery control device is arranged in the interior space.

[0008] The first housing element forms a first temperature control structure on a side facing away from the interior space. In particular, the first temperature control structure is also constructed on a side facing away from the second housing element.

[0009] The second housing element forms a second temperature control structure on a side facing the interior space. In particular, the second temperature control structure is also configured on a side facing the first housing element.

[0010] The cover element is connected to the second housing element in such a way that the cover element delimits a temperature control fluid receptacle through which a temperature control fluid can flow in a fluid-tight manner relative to the interior. The second temperature control structure is designed in such a way that a temperature control fluid can flow around it.

[0011] Advantageous improvements and modifications of the device according to the present invention include: a first element of the battery control device is arranged heat-conductingly on a side of the cover element facing the interior space; a second element of the battery control device is arranged heat-conductingly on a side of the second housing element facing away from the interior space and in particular facing away from the first housing element; the first element of the battery control device includes at least one electrical component and / or at least one electronic component of the battery module; the electrical components of the battery module are cell connectors and / or wires, and / or the electronic components of the battery module are switches, fuses, battery control systems and / or resistors; the at least one electronic component is integrated into a circuit board; the second element of the battery control device is a transformer, in particular a DC transformer; the cover element is made of metal in a flat surface, or the cover element has a molded portion for accommodating the first element of the battery control device; a plurality of battery cells are arranged heat-conductingly on a first inner side of the interior space directly adjacent to the first temperature control structure. The first housing element and / or the second housing element are respectively configured as a die-cast housing; the first housing element and the second housing element are connected to each other in a fluid-tight manner, wherein in particular a sealing element is arranged between the first housing element and the second housing element; another covering element is connected to the first housing element in such a manner that the other covering element defines another temperature-control fluid receiving portion through which a temperature-control fluid can flow in a fluid-tight manner relative to the surrounding environment, and the first temperature-control structure is configured to be able to be circulated by the temperature-control fluid; the battery has a first terminal configured to supply the temperature-control fluid to the battery and a second terminal configured to guide the temperature-control fluid out of the battery, wherein the battery has a temperature-control fluid guide portion configured in such a manner that the temperature-control fluid can flow through one temperature-control fluid receiving portion and another temperature-control fluid receiving portion in series or in parallel; the first temperature-control structure and / or the second temperature-control structure are respectively configured as a flow guiding element, a flow disrupting element or a flow limiting portion.

[0012] The embodiment of the battery according to the invention offers the advantage in particular that effective cooling of individual components, such as, for example, a plurality of battery cells and components of power electronics, is possible because relatively short heat paths are provided. At the same time, a compact design of the battery can be provided.

[0013] Advantageously, the first element of the battery control device is arranged in a heat-conducting manner on the side of the cover element facing the interior. As a result, the first element of the battery control device can be reliably temperature-controlled. In this case, the first element of the battery control device can be temperature-controlled in particular independently of a plurality of battery cells. The temperature control of the first element of the battery control device can be influenced by means of the design of the second temperature control structure.

[0014] It is also advantageous if the second element of the battery control device is arranged in a heat-conducting manner on a side of the second housing element that faces away from the interior and in particular from the first housing element. As a result, the temperature of the second element of the battery control device can also be reliably controlled. In particular, the second element of the battery control device can be temperature-controlled independently of a plurality of battery cells.

[0015] Advantageously, the first element of the battery control device comprises at least one electrical component of the battery module and / or at least one electronic component of the battery module.

[0016] It is advantageous that the electrical components of the battery module are single cell connectors and / or wires. Here, the single cell connector is configured to connect the voltage taps of multiple battery cells in series and / or in parallel to each other in an electrically conductive manner. The wire is configured to conduct current from one component to another. Preferably, the electronic components of the battery module are switches, fuses, battery control systems and / or resistors. By arranging the electrical components and / or electronic components in the internal space of the battery, it is possible to connect multiple battery cells of the battery module in series and / or in parallel in an electrically conductive manner and to control and regulate the battery module. In addition, these components can be reliably temperature-controlled at the same time.

[0017] According to a preferred aspect of the invention, at least one electronic component is integrated into the circuit board. In addition, the conductors can also be at least partially integrated into the circuit board. This provides the advantage of a relatively compact design, which can also be easily temperature-controlled.

[0018] Furthermore, it is suitable that the second element of the battery control device is a transformer, in particular a DC transformer. Furthermore, the transformer or the DC transformer is arranged on another circuit board or integrated into another circuit board.

[0019] In this case, a thermal compensation material, such as, for example, a heat-conducting adhesive, a so-called gap filler or a so-called thermal interface material (TIM), can also be arranged between the transformer or DC transformer and the second housing element. A reliable heat conduction can be formed by connecting the transformer to the second housing element, such as by means of screws, for example. Overall, this results in a relatively short thermal path between the temperature-control fluid flowing through the temperature-control fluid receptacle of the second housing element and the transformer or DC transformer, which has a relatively low thermal resistance.

[0020] It is particularly preferred that the cover element is planar and is made of a metallic material or that the cover element has a shaped portion for accommodating the first element of the battery control unit. In particular, the cover element is preferably made of a metal sheet.

[0021] In this case, the cover element can be connected to the second housing element, for example, by material bonding, such as, in particular, welding. For this purpose, the second housing element can, for example, have a connection region that is designed to be connected to the cover element by material bonding. It should be noted again here that the cover element seals the temperature control fluid receptacle in a fluid-tight manner relative to the interior. This seal can be formed, in particular, by a material bonding connection of the cover element to the connection region of the second housing element.

[0022] Furthermore, it is also possible that the cover element can be connected to the second housing element in a form-fitting manner, such as in particular screwing. For a more reliable seal, an additional sealing element can also be arranged between the cover element and the second housing element.

[0023] The planar design of the cover element offers the advantage that a similarly large, preferably thermal contact surface is formed for connecting the first element of the battery control unit.

[0024] A cover element having a shaped portion for accommodating a first element of a battery control unit, for example, offers the advantage that the height of the temperature-control fluid receptacle, through which the temperature-control fluid can flow, can be adapted accordingly, thereby making it possible to provide a particularly space-optimized design. Furthermore, the shaped portion can provide a secure accommodation of the first element of the battery control unit. It should also be noted here that, for example, by means of a configuration having a bending angle, a reduced height of the temperature-control fluid receptacle can be formed in the flow direction of the temperature-control fluid receptacle or in the longitudinal direction.

[0025] Furthermore, it should be noted that the cover element is made of a metallic material, which can be selected from aluminum, copper or nickel. This offers the advantage of a relatively high thermal conductivity.

[0026] In particular, a thermal compensation element, such as, for example, a heat-conducting adhesive, can be arranged between the first element of the battery control unit and the cover element.

[0027] The plurality of battery cells are expediently arranged in a heat-conducting manner on the inner side of the interior space which is arranged directly adjacent to the first temperature control structure. As a result, the plurality of battery cells can be temperature-controlled very reliably overall. In addition, the plurality of battery cells can thus be temperature-controlled, for example, independently of the first element of the battery control device and also independently of the second element of the battery control device. In particular, a thermal compensation element, such as, for example, a heat-conducting adhesive, can be arranged between the plurality of battery cells and the inner side.

[0028] It is expedient for the first housing element and / or the second housing element to be respectively designed as a die-cast housing. This makes it possible to provide a mechanically relatively stable design. In addition, it is possible to form a region for conducting a temperature control fluid in the die-cast component, thereby making it possible to dispense with additional cooling plates, heating elements or temperature control systems.

[0029] Advantageously, the first housing element and the second housing element are connected to each other in a fluid-tight manner. For this purpose, a sealing element is arranged in particular between the first housing element and the second housing element. Thus, a fluid-tightly closed interior of the battery can be provided. In particular, battery cells, electrical components and / or electronic components can be protected from external influences.

[0030] According to a preferred aspect of the present invention, a plurality of battery cells are configured as prismatic battery cells. The prismatic battery cells have a total of six side surfaces, which are arranged opposite to each other in pairs and parallel to each other. In addition, the side surfaces arranged adjacent to each other are arranged at right angles to each other. In summary, a compact battery can be provided by using prismatic battery cells in the battery according to the present invention.

[0031] It is suitable to arrange another covering element on the first housing element. In particular, the other covering element is arranged to be connected to the first housing element. Here, the other covering element and the first temperature control structure together constitute another temperature control fluid receiving portion through which a temperature control fluid can flow. Here, the other covering element defines the other temperature control fluid receiving portion in a fluid-tight manner relative to the surrounding environment. In addition, the first temperature control structure is configured to be able to be circulated by the temperature control fluid. This provides the following advantages, namely, the first temperature control structure can be matched with the requirements of the temperature control of multiple battery cells accommodated in the interior space. Here, this matching can be adjusted, for example, independently of the cooling of electrical components and / or electronic components and independently of the cooling of transformers or DC transformers. For example, the first temperature control structure can include flow interference elements or flow guiding elements, which are arranged only at those positions that can positively affect the temperature control due to the required temperature of multiple battery cells. In addition, the remaining area of ​​another temperature control fluid receiving portion can be optimized in terms of flow and pressure loss. In particular, a compromise between temperature control of a plurality of battery cells and electrical and / or electronic components and a transformer can be eliminated, since temperature control of these components independently of one another is possible.

[0032] Preferably, the other cover element is connected to the first housing element in a material-locking manner. In particular, the other cover element can be connected to the first housing element by welding or soldering. In addition, the second sealing element can be arranged between the first housing element and the cover element.

[0033] It is also preferably possible for the further cover element to be formed by the first housing element.

[0034] Overall, this offers the advantage that such a design can prevent the temperature control fluid from being able to enter the interior space and reach a plurality of battery cells in the event of a defect or a leak in the first temperature control chamber.

[0035] Advantageously, the battery comprises a first connection and a second connection, wherein the first connection is designed to supply the temperature control fluid to the battery and the second connection is designed to discharge the temperature control fluid from the battery.

[0036] In particular, the first connection and the second connection form an interface to the motor vehicle.

[0037] According to a first aspect, a temperature control fluid can flow in series through a temperature control fluid receptacle and another temperature control fluid receptacle. Here, for example, the temperature control fluid first flows through one temperature control fluid receptacle and then through the other temperature control fluid receptacle, or vice versa, first flows through the other temperature control fluid receptacle and then through one temperature control fluid receptacle.

[0038] According to a second aspect of the present invention, a temperature control fluid can flow through a temperature control fluid receptacle and another temperature control fluid receptacle in parallel. Here, after flowing through a first connection, the temperature control fluid is divided into a first partial flow flowing through one temperature control fluid receptacle and a second partial flow flowing through another temperature control fluid receptacle. The first partial flow and the second partial flow are brought together again after flowing through the respective temperature control fluid receptacles and are led out of the battery via the second connection.

[0039] As a result, for example, pressure losses can be minimized overall. In addition, for example, heat transfer can also be improved as a result.

[0040] In particular, the first housing element and / or the second housing element here respectively have a temperature control fluid inlet and a temperature control fluid outlet. The respective temperature control fluid inlet is used to introduce the temperature control fluid into one temperature control fluid receptacle or the other temperature control fluid receptacle, and the respective temperature control fluid outlet is used to discharge the temperature control fluid from one temperature control fluid receptacle or the other temperature control fluid receptacle. In addition, the temperature control fluid outlet and the temperature control fluid inlet can also be connected to each other in a fluid-conducting manner, so that the temperature control fluid can flow between one temperature control fluid receptacle and the other temperature control fluid receptacle or vice versa.

[0041] For example, the temperature control fluid inlet of the first housing element can form a first connection of the battery, so that the temperature control fluid can flow in. Furthermore, for example, the temperature control fluid outlet of the first housing element can be connected to the temperature control fluid inlet of the second housing element in a fluid-conducting manner, so that the temperature control fluid can first flow through the other temperature control fluid receptacle and then through the one temperature control fluid receptacle, i.e., form a series flow. Furthermore, for example, the temperature control fluid outlet of the second housing element can form a second connection of the battery, so that the temperature control fluid can leave the temperature control fluid receptacle.

[0042] For example, the temperature-control fluid inlet of the second housing element can form a first connection of the battery, so that the temperature-control fluid can flow into the temperature-control fluid receptacle. Furthermore, for example, the temperature-control fluid outlet of the second housing element can be connected to the temperature-control fluid inlet of the first housing element in a fluid-conducting manner, so that the temperature-control fluid can first flow through one temperature-control fluid receptacle and then through the other temperature-control fluid receptacle, i.e., form a series flow.

[0043] It should be noted here that such a connection between a temperature-control fluid inlet of one housing element and a temperature-control fluid outlet of another housing element is preferably formed in the first housing element and / or in the second housing element, which are moreover particularly preferably each formed as a die-cast housing.

[0044] It is expedient if the first temperature control structure and / or the second temperature control structure are each designed as a flow guiding element, a flow disrupting element or a flow delimiting element.

[0045] In particular, the first temperature control structure and / or the second temperature control structure can each be formed by a corresponding die-cast housing.

[0046] In this case, a flow guiding element is to be understood as an element which is arranged within the respective temperature control chamber and serves to redirect the flow without a similar increase in turbulence.

[0047] In this case, a flow disrupting element is to be understood as an element which is arranged in the respective temperature control chamber and serves to increase the turbulence of the flow, in particular to bring about a transition from laminar flow to turbulent flow, in order in any case to bring about an improved heat dissipation.

[0048] In this case, a flow delimitation is understood to be an element which mechanically delimits the respective temperature control chamber.

[0049] It is also advantageous that the electrical and / or electronic components are connected thermally conductively to the side of the cover element facing the interior. In particular, a thermal compensation element, such as a thermally conductive adhesive or a so-called thermal interface material (TIM), can be arranged between the electrical and / or electronic components and the cover element.

[0050] For example, by connecting the printed circuit board including the electronic components to the cover element, for example also by means of screws or by means of a material-locked connection, a reliable heat conduction can be formed. Overall, this results in a relatively short thermal path between the temperature-control fluid flowing through the temperature-control fluid receptacle and the printed circuit board, which has a relatively low thermal resistance.

[0051] The subject matter of the present invention is also the use of the battery according to the invention just described for temperature control and in particular for cooling a plurality of battery cells, electrical components and / or electronic components and / or transformers, wherein a temperature control fluid configured as a temperature control liquid or a temperature control gas circulates around a first temperature control structure or wherein a temperature control fluid configured as a temperature control liquid flows through the temperature control fluid receptacle.

[0052] In particular, the battery is operated in such a way that the temperature of the cells, which are preferably designed as lithium-ion cells, is below a temperature of 40° C. and preferably below a temperature of 35° C. This allows adequate thermal regulation of the battery to be achieved, so that the cells can be operated in a thermally non-critical state, so that, for example, cell aging synchronization can be achieved, since, in particular, the temperature gradients from cell to cell are relatively small. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Embodiments of the present invention are shown in the drawings and explained in detail in the following description. It is shown:

[0054] Figure 1 An embodiment of a battery according to the invention is shown in a perspective view,

[0055] Figure 2 The cross-sectional view shows the Figure 1 Embodiments of the battery,

[0056] Figure 3 The underside of the second housing element is shown in a perspective view,

[0057] Figure 4 The perspective diagram shows the Figure 3 an upper side of the second housing element,

[0058] Figure 5 The underside of the second housing element with the cover element is shown in a perspective view,

[0059] Figure 6 A partial view of a battery according to the present invention is shown in an exploded view,

[0060] Figure 7 The upper side of the first housing element is shown in a perspective view, and

[0061] Figure 8 The underside of the first housing element is shown in a perspective view. DETAILED DESCRIPTION

[0062] Figure 1 An embodiment of a battery 1 according to the invention is shown in a perspective view. Figure 2The cross-sectional view shows the Figure 1 This embodiment of the battery 1 according to the present invention will now be described together Figure 1 and Figure 2 .

[0063] The battery 1 includes a first housing element 2 and a second housing element 3. Figure 1 and 2 In the embodiment of the battery 1 shown in FIG. 1 , the first housing element 2 is designed as a die-cast housing 20 and the second housing element 3 is designed as a die-cast housing 30 .

[0064] The first housing element 2 and the second housing element 3 together form an inner space 5 for accommodating the battery module 10. Figure 2 The interior space 5 and the battery module 10 can be seen in the sectional view of FIG. In particular, the first housing element 2 and the second housing element 3 are configured to be connected to each other in a fluid-tight manner. For this purpose, a sealing element 131 is arranged between the first housing element 2 and the second housing element 3. In particular, the first housing element 2 and the second housing element 3 can also be screwed to each other in order to form a reliable mechanical connection.

[0065] A plurality of battery cells 6 are accommodated in the interior space 5. Here, a plurality of battery cells 6 of the battery module 10 are electrically connected to one another in series and / or in parallel. Figure 2 As can be seen in FIG. 8 , the plurality of individual battery cells 6 are each designed as prismatic individual battery cells 60 .

[0066] The second housing element 3 forms a second temperature control structure 102 on a side facing the interior space 5. In particular, the second temperature control structure 102 is arranged facing the first housing element 2.

[0067] Furthermore, the battery 1 comprises a cover element 100 which is connected to the second housing element 3 in such a way that the cover element 100 delimits a temperature control fluid receptacle 112 through which a temperature control fluid can flow in a fluid-tight manner relative to the interior 5. Furthermore, the second temperature control structure 102 is designed so that a temperature control fluid can flow around it.

[0068] Here, according to Figure 1 and Figure 2 In an embodiment of the invention, the cover element 100 has a shaped portion 110 for accommodating the first element 8 of the battery control unit. Furthermore, it is also possible that the cover element 100 is formed flat from metal.

[0069] Furthermore, a first element 8 of the battery control unit is arranged in the interior 5 . The first element 8 of the battery control unit is arranged in a heat-conducting manner on the side of the cover element 100 facing the interior 5 .

[0070] The first element 8 of the battery control device may include, for example, an electrical component 80 of the battery module 10 and / or an electronic component 81 of the battery module 10. For example, the electrical component 80 may be a single cell connector 82, which connects a plurality of battery cells 6, 60 to each other in a conductive manner in series and / or in parallel. In addition, the electrical component 80 may be a conductor 83 for conducting current. For example, the electronic component 81 of the battery module 10 may be a switch, a fuse element, a battery control system and / or a resistor. Particularly preferably, the electronic component 81 may be a single cell connector 82, which connects a plurality of battery cells 6, 60 to each other in a conductive manner in series and / or in parallel. Figure 2 As can be seen in FIG. 1 , the circuit board 90 is at least partially integrated into the circuit board 90 .

[0071] The first housing element 2 forms a first temperature control structure 101 on the side facing away from the interior space 5. Figure 1 and 2 In the embodiment of the present invention, the first temperature control structure 101 is arranged on the side of the first housing element 2 facing away from the second housing element 3. In addition, Figure 2 It is also shown that a further cover element is arranged on the first housing element 2. Here, the cover element 14 and the first housing element 2 together form a further temperature control fluid receptacle 111 through which a temperature control fluid can flow. The first temperature control structure 101 is arranged in the further temperature control fluid receptacle 111. In particular, the cover element 14 can be connected to the first housing element 2 in a materially bonded manner. Here, a further sealing element 132 can also preferably be arranged between the first housing element 2 and the cover element 14.

[0072] Here, as from Figure 2 As can be seen in FIG. 1 , a plurality of battery cells 6 are arranged in a heat-conducting manner on a first inner side of the interior 5 , which is arranged directly adjacent to the first temperature control structure 101 .

[0073] In addition, especially Figure 1 It is shown that the battery 1 has a first connection 151 and a second connection 152. The first connection 151 is designed to supply a temperature control fluid to the battery 1, and the second connection 152 is designed to discharge the temperature control fluid from the battery 1. The temperature control fluid can flow through the battery 1 and in particular a further temperature control fluid receptacle 111 and a temperature control fluid receptacle 112 in series or in parallel.

[0074] Furthermore, the battery module comprises a second element 9 of the battery controller, which is arranged in a heat-conducting manner on a side of the second housing element 3 facing away from the interior 5 and in particular the first housing element 2 .

[0075] In particular, the second element 9 of the battery control unit may be a transformer 91 , such as in particular a DC transformer 92 .

[0076] Figure 3The underside of the second housing element 3 according to the invention is shown in a perspective view. Here, a temperature control fluid inlet 161 of the second housing element 3 can be seen, which is designed to introduce a temperature control fluid into the temperature control fluid receiving portion 112. In addition, a temperature control fluid outlet 162 of the second housing element 3 can also be seen here. The second temperature control fluid outlet 162 is designed to discharge the temperature control fluid from the temperature control fluid receiving portion 112.

[0077] It should be noted here that the temperature control fluid inlet 161 can also form the first connection 151 of the battery 1 or can be connected to the first connection 151 in a fluid-conducting manner, or the temperature control fluid outlet 162 can also form the second connection 152 of the battery 1 or can be connected to the second connection 152 in a fluid-conducting manner.

[0078] also, Figure 3 It is also shown that the second housing element 3 comprises a second temperature control structure 102. The second temperature control structure 102 can include a flow guiding element 121, which is designed to define the temperature control fluid receiving portion 112 in such a way that the temperature control fluid is guided accordingly. In addition, the second temperature control structure 102 can include a flow disrupting element 122, which is designed to increase the turbulence of the temperature control fluid flowing through the temperature control fluid receiving portion 112. In addition, the second temperature control structure 102 can also include a flow limiting portion 123, which defines the temperature control fluid receiving portion 112 in a fluid-tight manner.

[0079] The flow guide inside the temperature control fluid receiving portion 112 is schematically indicated by the arrows shown. In particular, the flow guide is designed in a U-shape.

[0080] It has already been mentioned here that the cover element 100 is arranged in such a way that the temperature-control fluid receptacle 112 closes off the interior 5 in a fluid-tight manner. In particular, the cover element 100 can be connected to the second housing element 3 in a materially bonded manner, for example.

[0081] Figure 4 A perspective diagram showing Figure 3 The upper side of the second housing element 3 is shown. In particular, a temperature control fluid inlet 161 of the second housing element 3 and a temperature control fluid outlet 162 of the second housing element 3 are also shown here.

[0082] It should be noted in particular that the second element 9 of the battery control unit, for example the transformer 91 or in particular the DC transformer 92 , can be arranged directly on the upper side shown in a heat-conducting manner. For this purpose, the second housing element 3 can have a screw point 125 , for example.

[0083] Figure 5The underside of the second housing element 3 according to the invention is shown in a perspective view with a cover element 100. In particular, the embodiment of the second housing element 3 corresponds to that according to Figure 3 In this case, the cover element 100 is connected to the second housing element 3 in such a way that the cover element 100 delimits the temperature control fluid receptacle 112 in a fluid-tight manner relative to the interior 5 . Figure 5 , the cover element 100 is made of a metal material. In addition, the cover element 100 has a shaped portion 110. Here, the shaped portion 110 is designed to accommodate the first element 8 of the battery control device, such as, for example, also from Figure 2 As can be seen in .

[0084] Figure 6 A detail of a battery 1 according to the invention is shown in an exploded view.

[0085] The second housing element 3 is shown here. Furthermore, the first element 8 of the battery control unit can be seen, which comprises an electronic component 81 . In this case, the electronic component 81 is integrated into a printed circuit board 90 .

[0086] Furthermore, it can be seen that the first element 8 of the battery control unit is arranged on that side of the cover element 100 which faces the interior 5 .

[0087] also, Figure 6 Also shown is a second element 9 of the battery control unit, which is arranged in a heat-conducting manner on the side of the second housing element 3 facing away from the interior 5 . In this case, the second element 9 of the battery control unit is designed in particular as a DC transformer 92 .

[0088] In this case, the second element 9 of the battery control device can be provided, for example, by means of Figure 4 The screw point 125 shown in FIG. 1 is connected to the second housing element 3 .

[0089] Figure 7 The upper side of the first housing element 2 is shown in a perspective view. In particular, the interior space 5 can be seen here, which accommodates a plurality of Figure 7 The battery cells 6 cannot be seen in the figure. Furthermore, a temperature control fluid guide 153 is shown, which is formed in the first housing element 2. The temperature control fluid guide 153 is designed to connect a temperature control fluid inlet of one housing element to a temperature control fluid outlet of another housing element in a fluid-conducting manner, so that a parallel or series throughflow can be formed.

[0090] Figure 8 A perspective diagram showing Figure 7The lower side of the first housing element 2 is shown. In particular, the first temperature control structure 101 can be seen here, which is arranged on the side of the first housing element facing away from the interior space 5. In addition, a temperature control fluid inlet 163 of a further temperature control fluid receiving part 111 and a temperature control fluid outlet of a further temperature control fluid receiving part 111 are shown. The first temperature control structure 101 is designed as a flow guide element 121, a flow disrupting element 122 or a flow limiting part 123. It should be noted here that Figure 8 A further covering element, which is not visible in the drawing, is connected to the first housing element 2 in such a way that it delimits a further temperature-control fluid receptacle in a fluid-tight manner relative to the surroundings.

Claims

1. A battery comprising The first housing element (2) and the second housing element (3) are Together they form an inner space (5) for accommodating a battery module (10), wherein A plurality of battery cells (6) of the battery module (10) which are electrically connected in series and / or in parallel are arranged in the inner space (5), wherein Furthermore, a first element (8) of a battery control device is arranged in the interior (5), wherein: The first housing element (2) forms a first temperature control structure (101) on a side facing away from the interior space (5) and facing away from the second housing element (3), The invention is characterized in that the second housing element (3) forms a second temperature control structure (102) on a side facing the inner space (5) and the first housing element (2), and The cover element (100) is connected to the second housing element (3) in such a way that The cover element (100) defines a temperature control fluid receptacle (112) through which a temperature control fluid can flow in a fluid-tight manner relative to the interior space (5), and the second temperature control structure (102) is designed to allow temperature control fluid to flow around it, wherein the first element (8) of the battery control unit is arranged in a heat-conducting manner on a side of the cover element (100) facing the interior space (5).

2. The battery according to claim 1, It is characterized in that The second element (9) of the battery control unit is arranged in a heat-conducting manner on a side of the second housing element (3) facing away from the interior space (5) and facing away from the first housing element (2).

3. The battery according to claim 1 or 2, It is characterized in that The first element (8) of the battery control device comprises at least one electrical component (80) and / or at least one electronic component (81) of the battery module (10).

4. The battery according to claim 3, It is characterized in that The electrical component (80) of the battery module (10) is a cell connector (82) and / or a wire (83), and / or the electronic component (81) of the battery module (10) is a switch, a fuse element, a battery control system and / or a resistor.

5. The battery according to claim 3, It is characterized in that The at least one electronic component (81) is integrated into a circuit board (90).

6. The battery according to claim 2, It is characterized in that The second component (9) of the battery control device is a transformer (91).

7. The battery according to claim 1 or 2, It is characterized in that The cover element (100) is formed flat from metal or the cover element (100) has a shaped portion (110) for accommodating a first element (8) of the battery control unit.

8. The battery according to claim 1 or 2, It is characterized in that A plurality of battery cells (6) are arranged in a heat-conducting manner on a first inner side of the interior space (5) which is arranged directly adjacent to the first temperature control structure (101).

9. The battery according to claim 1 or 2, It is characterized in that The first housing element (2) and / or the second housing element (3) are each designed as a die-cast housing (20, 30).

10. The battery according to claim 1 or 2, It is characterized in that The first housing element (2) and the second housing element (3) are connected to one another in a fluid-tight manner.

11. The battery according to claim 1 or 2, It is characterized in that A further covering element (14) is connected to the first housing element (2) in such a way that the further covering element (14) defines a further temperature-control fluid receptacle (111) through which a temperature-control fluid can flow in a fluid-tight manner relative to the surroundings, and the first temperature-control structure (101) is designed so that a temperature-control fluid can flow around it.

12. The battery according to claim 1 or 2, It is characterized in that The battery has a first connection (151) configured to supply a temperature-control fluid to the battery and a second connection (152) configured to discharge the temperature-control fluid from the battery (1), wherein The battery has a temperature-control fluid guide (153) which is designed in such a way that a temperature-control fluid can flow through a temperature-control fluid receptacle (112) and a further temperature-control fluid receptacle (111) in series or in parallel.

13. The battery according to claim 1 or 2, It is characterized in that The first temperature control structure (101) and / or the second temperature control structure (102) are each configured as a flow guiding element (121), as a flow disrupting element (122), or as a flow limiting portion (123).

14. The battery according to claim 1, characterized in that The battery cell (6) is designed in a prismatic shape.

15. The battery according to claim 6, characterized in that The transformer (91) is a DC transformer (92).

16. The battery according to claim 10, characterized in that A sealing element (131) is arranged between the first housing element (2) and the second housing element (3).

17. Use of the battery (1) according to any one of claims 1 to 16 for temperature control and cooling of electrical components (80) or a plurality of battery cells (6), wherein: A temperature control fluid designed as a temperature control liquid or as a temperature control gas flows around the first temperature control structure (101), wherein the temperature control fluid designed as a temperature control liquid flows through a temperature control fluid receptacle (112).

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