Battery cell, battery module and vehicle comprising battery cell or battery module

Abstract

The present disclosure relates to a battery cell (100) comprising a housing (20), an electrode material (12, 16), a current collector (30) and an interface component (40), the housing (20) comprising the electrode material (12, 16), at least a portion of the current collector (30) and the interface component (40), the current collector (30) comprising a first connection portion (32) connected to the electrode material (12, 16) and a second connection portion (34) connectable to a battery terminal (210), and an interface member (40) arranged between the current collector (30) and the housing (20), the interface member (40) being in contact with the current collector (30) and the housing (20), the interface member (40) being configured for electrically insulating the housing (20) from the current collector (30), and the interface member (40) comprising an interface material having a thermal conductivity of at least 1 W / (m * K).

Description

Technical Field

[0001] The present disclosure relates to a battery cell, a battery module including at least two battery cells, and a vehicle including a battery cell or a battery module. Background Art

[0002] Battery cells, such as lithium battery cells, are well-known and widely used. Generally, an anode and a cathode are stacked, and each of the anode and the cathode is connected to a current collector. These current collectors conduct current from the anode and the cathode to corresponding terminals of the battery cell, respectively. In addition, a battery cell typically includes a housing surrounding the electrodes (i.e., the anode and the cathode) and the current collectors. The housing is electrically insulated from the current collectors by an electrical insulation member that is placed between the respective current collectors and the housing. The electrical insulation member is typically made of an inexpensive plastic material.

[0003] A problem associated with the electrical insulation member is that the electrical insulation member does not transfer heat, or only transfers a limited amount of heat, from inside the battery cell to the housing from which the heat can be transferred to another radiator. However, at high loads, heat transfer may be insufficient, which may cause the battery cell to overheat and perform poorly. Summary of the Invention

[0004] The above problems are at least partially solved or alleviated by the subject matter of the independent claims of the present disclosure, with further examples incorporated in the dependent claims.

[0005] According to a first aspect, there is provided a battery cell including a housing, electrode material, a current collector, and an interface member. The housing includes at least a portion of the electrode material, the current collector, and the interface member. The current collector includes a first connection portion connected to the electrode material and a second connection portion connectable to a battery terminal (in particular, a first battery terminal). The interface member is disposed between the current collector and the housing, and the interface member contacts the current collector and the housing. The interface member is configured to electrically insulate the housing from the current collector, and the interface member includes an interface material having a thermal conductivity of at least 1 W / (m·K).

[0006] The inventors have recognized that the current collector can be a bottleneck for heat transfer from inside the battery cell to its housing. The current collector can reach peak temperatures, especially during high loads, such as when the battery cell is rapidly charged. However, using an interface material having a thermal conductivity of at least 1 W / (m·K) allows heat generated in the current collector to be transferred to the housing of the battery cell. Thus, compared to inexpensive plastic materials that typically have a very low thermal conductivity in the range of 0.2 W / (m·K) or lower, heat generated in one or more current collectors can be more effectively transferred to the housing via the interface member having the interface material, such that the temperature of the current collector can be significantly reduced.

[0007] In addition, the housing can be connected to a radiator. Thereby, the temperature of the housing can be maintained at a moderate level and / or overheating of the battery cells can be prevented. Further, preventing overheating of the housing can prevent the housing from becoming warmer than the current collector, and thus can prevent heat from being transferred from the housing to the current collector via the interface component. By reducing the temperature (particularly the peak temperature) inside the battery cells, especially at one or more current collectors, the temperature of other parts of the battery cells can also be reduced. In particular, the electrolyte and / or other thermally sensitive materials inside the battery cells can be prevented from being exposed to excessive temperatures. By reducing the temperature of the electrolyte and / or other thermally sensitive materials (also referred to as parts of the battery cells affected by temperature), the lifespan of those materials can be increased, thereby increasing the lifespan durability of the battery cells.

[0008] Accordingly, an interface component using an interface material (which may also be referred to as a thermal conductivity material) having the thermal conductivity specified herein is used. It allows for reducing the peak temperature in the battery cells, particularly the peak temperature of one or more current collectors, thereby increasing the lifespan of the battery cells, particularly by increasing the lifespan of the so-called sensitive active materials (such as the electrolyte) of the battery cells. The sensitive active materials include components of the battery cells that are affected by particularly high temperatures.

[0009] The electrode material can be anode material and / or cathode material. In particular, the electrode material can be in the form of several sheets or layers of anode material and / or cathode material. Further, the battery cell can include separator material. The separator material can be in the form of several sheets or layers of separator material. The sheets or layers of anode material and cathode material can be alternating, with sheets or layers of separator material therebetween. The arrangement of the electrode material and the separator material, such as the repeated arrangement of sheets or layers of anode material, separator material, and cathode material, can be described herein as an electrode arrangement. Such an electrode arrangement can have the form of a jelly roll or a jelly stack. The battery cell can also include an electrolyte in any form (such as liquid or solid) that can be used in the battery cell. Such an electrolyte can be disposed between two adjacent sheets or layers of the aforementioned sheets or layers for ion transfer, respectively.

[0010] For example, the first connection portion of the current collector can be one or more electrode tabs, particularly electrode tabs from electrode materials such as anode materials and / or cathode materials. The first connection portion of the current collector can be located inside the housing. The second connection portion can be located outside the housing. For example, the second connection portion can include all the electrode tabs that are connected to each other and extend out of the housing. The battery terminal can be connected to one battery cell, or can be connected to two or more battery cells. Thus, the difference between the battery terminal and the current collector is that the current collector can extend inside the battery cell, while the battery terminal is outside the housing of the battery cell. In addition, the current collector can be directly connected to the electrode tab or a part of the electrode tab, while the battery terminal is only indirectly connected to the electrode material via the current collector. The current collector can be connected to the electrode material of the battery cell, while the battery terminal can be connected to the current collector of at least one battery cell or the current collectors of two or more battery cells, where each of the two or more current collectors can be respectively connected to the same type of electrode. Additionally or alternatively, the battery terminal can be a part of a battery module that includes at least two battery cells and a housing.

[0011] According to an example, the interface material can have a thermal conductivity of at least 10 W / (m*K). The higher the thermal conductivity of the interface material, the better the heat transfer from the current collector to the housing via the interface component, thereby preventing the current collector from becoming overwarm or even overheated, particularly during high loads. Note that the interface material is configured to electrically insulate the current collector from the housing. In other words, as long as the interface material can electrically insulate the current collector and the housing, the higher the thermal conductivity of the interface material, the better.

[0012] According to an example, the interface material can be at least one of a paste, an adhesive, a pad, and a phase change material. The paste, especially a thermal paste, can provide a very thin bonding line and thus provide a very small thermal resistance. Similar to the paste, the adhesive, especially a thermal adhesive, can provide a very thin bonding line. Compared with the paste, the adhesive can additionally provide additional mechanical strength for the bonding, especially after curing. The adhesive can be a single-component formulation or a two-component formulation. The two-component formulation adhesive can contain additives to improve, for example, the thermal conductivity. For example, the additive can be a solid filler, such as metal oxides, carbon black, carbon nanotubes, etc., or can be liquid metal droplets. The pad, especially a thermal pad, can be manufactured and used in a solid state, which makes it easy to apply. The pad can provide a thicker bonding line, for example, with a thickness ranging from greater than a few hundred micrometers (μm) to a few millimeters (mm). The phase change material can be a naturally viscous material and can be used similar to the paste. However, its application can be similar to that of the pad. After reaching the melting point (for example, a melting point of 55 - 60 degrees Celsius), the phase change material can change from a solid state to a liquid state or some intermediate state, thus filling the potential gap between the current collector and the housing. This can allow for a more flexible design, allowing for a gap between the current collector and the housing.

[0013] According to an example, the interface material can be plastic. Alternatively, the interface material can be made of metal. Plastic should be understood as a plastic material made of one, two, or more different plastic materials. A plastic material that includes only one plastic material can be called an unblended plastic material. A plastic material that includes two or more plastic materials can be called a blended plastic material or a composite plastic material including a fiber-reinforced plastic material, a plastic material filled with additives, etc. The plastic material can provide a wide range of manufacturing and / or application processes. For example, the interface component can be made by injection molding, extrusion, etc. In addition, the plastic material can allow for adaptation to the application, which means that the plastic material can allow for customization for the intended application. In addition to this, the plastic material can be cost-effective, especially can be a low-cost material, and can be mass-produced. In addition, the interface material being plastic can be of low weight, especially compared to the interface material made of metal. On the other hand, metal can provide higher strength and / or higher thermal conductivity than plastic. However, the metal used as the interface material may need to have electrical insulation properties, while plastic does not. By using a thermally conductive plastic as the interface material, the advantages of both the insulation performance and the improved thermal conductivity can be utilized.

[0014] According to an example, the interface component can be a solidified component that is solidified after being arranged in a liquid form between the housing and the current collector. For example, such an interface component can be made of a curable paste. It can be easily applied and can fill any gaps and / or any unevenness or roughness in the surface of the current collector and / or the housing. Thus, any inaccuracies in the manufacture of the current collector and / or the housing can be compensated for. In addition, due to limited adhesiveness, it still allows easy disassembly when solidified, and it can provide a bonding line that is thicker than the paste.

[0015] According to an example, the interface component can be an injection-molded component. In particular, it can be injection-molded before being introduced into the housing of the battery cell. Injection molding is a manufacturing process that allows a large quantity to be manufactured in a short time with sufficient quality, thus allowing a low cost for the injection-molded component.

[0016] According to an example, the battery cell can further include a preloading element that is configured to force the housing, the interface component, and the current collector into contact with each other. Thus, the preloading element can allow for balancing high tolerances. In other words, the preloading element can be configured such that it ensures that the housing, the interface component, and the current collector are in contact with each other without being affected by the tolerances caused by the manufacturing processes of the respective parts (i.e., the housing, the interface component, and the current collector).

[0017] According to an example, at least one of the housing, the interface component, and the current collector can include a preloading element. The preloading element being integrated in at least one of the housing, the interface component, and the current collector can allow for a reduction in the total number of parts. In addition, it can facilitate the assembly of the battery cell.

[0018] According to an example, the preloading element can be configured as a protrusion of the housing, the interface component, and / or the current collector. The protrusion can be deformable, particularly elastically deformable, in order to be applied to a wide range of gap sizes or spatial dimensions. In other words, the deformable protrusion can allow for balancing different gap sizes or spatial dimensions between the respective parts to ensure that the housing, the interface component, and the current collector are in firm contact with each other.

[0019] According to an example, the preloading element can be configured as a spring element. The spring element can allow for balancing different gap sizes or spatial dimensions to ensure that the housing, the interface component, and the current collector are in contact with each other. The spring element can be formed of the same material as the component (i.e., the housing, the interface component, or the current collector) in which it is integrated. The spring element can be formed as a tongue-shaped or finger-shaped element that protrudes from the respective part. It can be configured such that by contacting at least one of the other parts during assembly, it elastically deforms, thereby applying a biasing force that ensures that the housing, the interface component, and the current collector are in contact with each other.

[0020] According to an example, the battery terminal can be connected to the second connection portion of the current collector. Additionally, the battery terminal can be connected to the second portions of two or more current collectors. The battery terminal can be one of the positive terminal and the negative terminal, depending on whether the first portion of the corresponding current collector is connected to the electrode material forming the anode or the electrode material forming the cathode. The battery terminal can correspond to the terminal connected to an external electrical load (e.g., an electrical device). The battery module can include at least two battery cells and two battery terminals, where one battery terminal is connected to the anode via the corresponding current collector, and the other battery terminal is connected to the cathode via the corresponding current collector.

[0021] According to an example, the battery cell can further include a second electrode material, a second current collector, and a second interface component, and the housing can further include a second electrode material, at least a portion of the second current collector, and the second interface component. The second current collector includes a first connection portion connected to the second electrode material and a second connection portion that can be connected to the battery terminal and / or another battery terminal (especially the second battery terminal), and the second interface component is disposed between the second current collector and the housing. The second interface component contacts the second current collector and the housing, and the second interface component is configured to electrically insulate the housing from the second current collector, and the second interface component includes a second interface material having a thermal conductivity of at least 1 W / (m*K).

[0022] In particular, the first electrode material can be one of the cathode or the anode, and the second electrode material can be the other of the cathode or the anode, respectively. Thus, one of the current collectors can be the anode current collector, and the other current collector can be the cathode current collector. For example, the current collectors can be arranged at opposite sides of the battery cell. Thus, the first interface component and the second interface component can be arranged at opposite sides of the battery cell, especially between the battery cell housing and the corresponding one of the first current collector and the second current collector.

[0023] Any feature mentioned herein regarding the electrode material, the current collector, and the interface component or their arrangement in the battery cell can be equally applied to the second electrode material, the second current collector, and the second interface component and their arrangement in the battery cell. For example, the second interface material can have a thermal conductivity of at least 10 W / (m*K), it can be at least one of a paste, an adhesive, a pad, and a phase change material, and it can be a plastic, a cured component, and / or an injection molded component. Similarly, a second preloading element can be present in the battery cell, and the second preloading element is configured to force the housing, the second interface component, and the second current collector into contact with each other. Additionally, at least one of the housing, the second interface component, and the second current collector can include the second preloading element. The second preloading element can be configured as a protrusion of the housing, the second interface component, and / or the second current collector. The second preloading element can be configured as a spring element. The battery terminal or the second battery terminal can be connected to the second portion of the second current collector.

[0024] The first current collector and the second current collector may be of substantially the same material and / or may have substantially the same dimensions. Approximately, the first interface member and the second interface member may be of substantially the same material and / or may have substantially the same dimensions. This means that the first interface material may correspond to the second interface material (and vice versa).

[0025] According to a second aspect, there is provided a battery module for a vehicle, comprising at least two battery cells according to the first aspect.

[0026] The battery module may be configured to bundle two or more battery cells to increase the power available for external electrical devices connected to the battery module.

[0027] According to an example, the battery module may further include battery terminals that are connected to the second connection portions of the current collectors of each battery cell. In particular, the battery module may include a first battery terminal and / or a second battery terminal, where the first battery terminal may be connected to the second portion of the corresponding current collector (in particular, the first current collector) of each battery cell, and the second battery terminal may be connected to the second portion of the corresponding current collector (in particular, the second current collector) of each battery cell. In other words, one of the two battery terminals may be connected to the anode of each battery cell via the corresponding current collector, and the other of the two battery terminals may be connected to the cathode of each battery cell via the corresponding other current collector.

[0028] According to a third aspect, there is provided a vehicle comprising a battery module according to the second aspect or a battery cell according to the first aspect.

[0029] It should be noted that the above examples may be combined with each other independently of the aspects involved.

[0030] These and other aspects of the present disclosure will become apparent from the embodiments described below and will be elucidated with reference to the examples described below. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Examples of the present disclosure will be described below with reference to the following drawings.

[0032] Figure 1 A exploded view of a battery cell part is shown;

[0033] Figure 2 A cross-sectional view of a battery cell is shown;

[0034] Figure 3 Shows Figure 1 or Figure 2 A top view inside the electrode assembly of a battery cell of;

[0035] Figure 4 A cross-sectional view showing a part of a battery cell;

[0036] Figure 5 Another cross-sectional view showing a part of the battery cell; and

[0037] Figure 6 A schematic diagram of a vehicle including a battery module having a plurality of battery cells.

[0038] The drawings are only schematic representations and are only used to illustrate examples of the present disclosure. Identical or equivalent elements have the same reference numerals in principle. If there are more than one identical or equivalent element, the reference numerals can be distinguished from each other by corresponding to consecutive enumerated points and numbers. Detailed Description

[0039] Figure 1 The parts of the battery cell 100 are shown in an exploded view. In this case, the battery cell 100 is shown as a prismatic battery cell. However, the battery cell 100 is not limited to a prismatic battery cell and can have any other form, such as but not limited to a pouch-type battery cell or a cylindrical battery cell.

[0040] The battery cell 100 includes an electrode assembly 10, as will be explained in more detail with reference to Figure 3 For example, the electrode assembly 10 can be of the jelly roll type. The battery cell 100 also includes two current collectors 30.1, 30.2 at opposite sides of the battery cell 100. In addition, the battery cell 100 includes two interface components 40.1, 40.2 at the same opposite sides of the battery cell 100. The electrode assembly 10 and its current collectors 30.1, 30.2 can be placed together with the two interface components 40.1, 40.2 inside the can 22 of the housing 20 of the battery cell 100 (see Figure 2 ).

[0041] Figure 2 Shows a battery cell 100 similar to Figure 1 except that here the cover 24 of the housing 20 is also shown and the housing 20 is closed. Note that the housing 20 can alternatively include other parts in addition to the can 22 and the cover 24, and this is a non-limiting example of a housing 20 including two different parts. In addition, Figure 2 the battery cell 100 of Figure 2 includes interface components 40.1, 40.2 of different sizes, which do not extend along the full height of the electrode assembly 10 in the example of

[0042] As Figure 2As shown, the electrode assembly 10 is placed inside the housing 20 and surrounded by the housing 20. The current collectors 30.1, 30.2 on each side include different parts, namely the first connection parts 32.1, 32.2 respectively connected to the corresponding electrode materials inside the electrode assembly 10. For example, the first connection part 32.1 can be connected to the anode or cathode electrode material, while the second connection part 32.2 can be connected to the corresponding other electrode material. Thus, the current collectors 30.1, 30.2 can form parts of the anode or cathode of the battery cell 100. Each of the current collectors 30.1, 30.2 also includes second connection parts 34.1, 34.2 for connecting to the battery terminals 210.1, 210.2 (see Figure 6 ). In this example, the second connection parts 34.1, 34.2 are formed as corresponding battery cell terminals for connecting to the corresponding battery terminals 210.1, 210.2. The second connection parts 34.1, 34.2 extend outside the housing 20, while the first connection parts 32.1, 32.2 are located inside the housing 20.

[0043] In addition, as Figure 2 shown, the battery cell 100 includes interface components 40.1, 40.2, 40.3. In this example, there are additional, optional interface components 40.3, which are located between the cover 24 and the upper part of the first connection parts 32.1, 32.2 and / or the electrode assembly 10. Each of the interface components 40.1, 40.2 is arranged between one of the current collectors 30.1, 30.2 (specifically the first connection parts 32.1, 32.2 in this example) and the housing 20 (specifically the can 22 in this example). Each of the interface components 40.1, 40.2 also contacts one of the current collectors 30.1, 30.2 (specifically the first connection parts 32.1, 32.2 in this example) and the housing 20 (the can 22 in this example).

[0044] The interface components 40.1, 40.2, 40.3 are configured to electrically insulate the housing 20 from the current collectors 30.1, 30.2. To this end, they include an interface material having electrical insulation properties. For example, the interface material can be plastic. In addition, the interface material is a thermally conductive interface material having a thermal conductivity of at least 1 W / (m*K), in particular at least 2 W / (m*K), and further in particular at least 5 W / (m*K). Alternatively, the thermal conductivity of the interface material can be at least 10 W / (m*K), at least 50 W / (m*K) or at least 100 W / (m*K). Thereby, while electrically insulating the housing 20 from the current collectors 30.1, 30.2, the interface components 40.1, 40.2, 40.3 are used to conduct heat from the electrode assembly 10 to the housing 20 during charging and / or discharging of the electrode assembly 10. From there, the heat can be further transferred or distributed, for example, by one or more heat sinks 220 in thermal contact with the housing 20 (see Figure 6 ).

[0045] In Figure 3 a top view shows the interior of an exemplary electrode assembly 10. According to this example, the electrode materials 12, 16 and the separator material 14 are arranged inside the electrode assembly 10. For example, there can be a first electrode material 12, such as an anode, and a second electrode material 16, such as a cathode. Each of the electrode materials 12, 16 and the separator material 14 can include several layers or sheets of material, for example, as shown in Figure 3 12.1, 12.2, 12.3, 14.1, 14.2, 14.3, 16.1, 16.2, 16.3, and they can be arranged in an alternating order as shown. As shown, the first connection portions 32.1, 32.2 of each of the first electrode material 12 and the second electrode material 16 can be arranged on opposite sides. The electrode assembly 10 can also include a housing 18, and the electrode materials 12, 16 and the separator material 14 can be accommodated in the housing 18. The housing 18 can also include any form of electrolyte, such as a fluid, a solid, or any form in between.

[0046] As can be seen in Figure 1 the battery cell 100 can include a preloading element 42, which can be configured to force the housing 20, the interface component 40.1 and the current collector 30.1 into contact with each other. In particular, they can be forced into contact with each other against the electrode materials 12, 16 or the electrode assembly 10 (specifically, its housing 18). In Figure 1In the example, the preloading element 42 is formed as a spring element. That is to say, the preloading element 42 is designed as a flexible element that can be preloaded when the interface components 40.1, 40.2, and the electrode assembly 10 are inserted into the housing 20. Thereby, the preloading element 42 is preloaded against the corresponding other parts (for example, the housing 20, the current collector 30.1, and / or the electrode assembly 10), forcing them to contact each other even if there may be any tolerances. Similarly, the interface component 40.2 and / or the interface component 40.3 may also include one or more such preloading elements 42.

[0047] However, as Figure 4 and Figure 5 shown, the preloading element 42 can be configured as a spring element in another form, for example, configured as one or more protrusions on the corresponding parts where they are located. Additionally, or alternatively, the preloading element 42 can be located on parts different from the interface components 40.1, 40.2, 40.3.

[0048] For example, as Figure 4 shown, the preloading element 42 can be in the form of a protrusion that is located on the housing 20 in this example, specifically on the can 22 in this example. The protrusion extends outward from the housing 20 towards the interface component 40, thereby forcing the interface component 40 to contact the current collector 30 (especially the first connection portion 32 of the current collector 30).

[0049] In Figure 5 another example of the preloading element 42 is shown, where the preloading element 42 is provided as a plurality of protrusions on the interface component 40, and the plurality of protrusions extend towards the current collector 30 (especially the first connection portion 32 of the current collector 30). Other alternatives may include the position of one or more preloading elements 42 on the current collector 30 and / or the electrode assembly 10 (for example, the housing 18 of the electrode assembly 10). In such an example, the orientation of the force exerted by the preloading element 42, compared with Figure 1 , Figure 4 and Figure 5 can be in the opposite direction. For example, as a protrusion, the preloading element 42 on the electrode assembly 10 can extend towards the housing 20, thereby forcing the corresponding parts to contact each other. One or more preloading elements 42 can also be provided on several parts.

[0050] Figure 6The vehicle 1000 is shown schematically. The vehicle 1000 includes a battery module 200, and the battery module 200 includes a plurality of battery cells 100. In this example case, only three battery cells 100 are shown, but the number can be much larger. The second connection portions 34.1, 34.2 of their respective current collectors 30.1, 30.2 are electrically connected to one of two battery terminals 210.1, 210.2, such as the cathode battery terminal and the anode battery terminal. The battery cells 100 can be charged and discharged through the battery terminals 210.1, 210.2. The radiator 220 is exemplarily arranged between the battery cells 100 for transferring heat away from the housing 20 of the battery cells 100. Alternatively, the radiator 220 can be arranged elsewhere, for example, on the bottom or top of the battery cells 100.

[0051] As used herein, the phrase “at least one” with respect to a list of one or more entities shall be understood to mean at least one entity selected from any one or more of the entities in the list of entities, but not necessarily including at least one of each entity specifically listed within the list of entities, and not excluding any combinations of entities in the list of entities. This definition also allows that entities other than those specifically identified within the list of entities referred to by the phrase “at least one” may optionally exist, whether related or unrelated to those specifically identified entities. Thus, as a non-limiting example, “at least one of A and B” (or equivalently, “at least one of A or B”, or equivalently, “at least one of A and / or B”) can, in one example, refer to at least one, optionally including more than one, of A, with no B present (and optionally including entities other than B); in another instance, refer to at least one, optionally including more than one, of B, with no A present (optionally including entities other than A); in yet another example, refer to at least one (optionally including more than one) of A and at least one (optionally including more than one) of B (and optionally including other entities). In other words, the phrases “at least one”, “one or more” and “and / or” are open-ended expressions that are both conjunctive and disjunctive in operation. For example, each of the expressions “at least one of A, B and C”, “at least one of A, B or C”, “one or more of A, B and C”, “one or more of A, B or C” and “A, B and / or C” can mean A alone, B alone, C alone, A and B together, A and C together, B and C together, A, B and C together, and optionally any one of the foregoing in combination with at least one other entity.

[0052] By studying the accompanying drawings, the disclosure, and the appended claims, those skilled in the art can understand and implement other variations of the disclosed examples when practicing the claimed disclosure. In the claims, the word "comprising" does not exclude other elements or steps, and the indefinite article "a" or "an" does not exclude a plurality. The fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used advantageously. Any reference signs in the claims should not be construed as limiting the scope of the claims.

[0053] List of Reference Signs

[0054] 10 Electrode Assembly

[0055] 12 First Electrode Material

[0056] 14 Separator Material

[0057] 16 Second Electrode Material

[0058] 18 Outer Shell

[0059] 20 Housing

[0060] 22 Can

[0061] 24 Cover

[0062] 30 Current Collector

[0063] 32 First Connection Portion

[0064] 34 Second Connection Portion

[0065] 40 Interface Component

[0066] 42 Preloading Element

[0067] 100 Battery Cell

[0068] 200 Battery Module

[0069] 210 Battery Terminal

[0070] 220 Heat Sink

[0071] 1000 Vehicle

Claims

1. A battery cell (100), comprising: Housing (20), Electrode materials (12, 16), The current collector (30) and Interface component (40), The housing (20) comprises the electrode material (12, 16), at least a portion of the current collector (30) and the interface component (40), The current collector (30) includes a first connection portion (32) connected to the electrode material (12, 16) and a second connection portion (34) connectable to a battery terminal (210), and The interface component (40) is arranged between the current collector (30) and the housing (20), The interface component (40) is in contact with the current collector (30) and the housing (20). The interface component (40) is configured to electrically insulate the housing (20) from the current collector (30), and The interface component (40) comprises an interface material having a thermal conductivity of at least 1 W / (m*K).

2. The battery cell (100) according to claim 1, wherein the interface material has a thermal conductivity of at least 10 W / (m*K).

3. The battery cell (100) according to claim 1, wherein the interface material is at least one of a paste, an adhesive, a solder pad and a phase change material. The battery cell (100) according to claim 1 , wherein the interface material is plastic.

5. The battery cell (100) according to claim 1, wherein the interface component (40) is a cured component that is cured after being arranged between the housing (20) and the current collector (30) in liquid form.

6. The battery cell (100) according to claim 1, wherein the interface component (40) is an injection-molded component.

7. The battery cell (100) according to claim 1, comprising a preloading element (42) configured to force the housing (20), the interface component (40) and the current collector (30) into contact with each other.

8. The battery cell (100) according to claim 7, at least one of the housing (20), the interface component (40) and the current collector (30) comprising the preloading element (42).

9. The battery cell (100) according to claim 8, wherein the preload element (42) is configured as a protrusion of the housing (20), the interface component (40) and / or the current collector (30).

10. The battery cell (100) according to any one of claims 7 to 9, the preload element (42) being configured as a spring element.

11. The battery cell (100) according to claim 1, the battery terminal (210) being connected to the second connection portion (34) of the current collector (30).

12. The battery cell (100) according to claim 1, further comprising a second electrode material (12, 16), a second current collector (30) and a second interface component (40), The housing (20) further comprises the second electrode material (12, 16), at least a portion of the second current collector (30) and the second interface component (40). The second current collector (30) includes a first connection portion (32) connected to the second electrode material (12, 16) and a second connection portion (34) connectable to the battery terminal (210) and / or another battery terminal (210), and The second interface component (40) is arranged between the second current collector (30) and the shell (20), the second interface component (40) is in contact with the second current collector (30) and the shell (20), the second interface component (40) is configured to electrically insulate the shell (20) from the second current collector (30), and the second interface component (40) includes a second interface material having a thermal conductivity of at least 1 W / (m*K).

13. A battery module (200) for a vehicle (1000), comprising at least two battery cells (100) according to any one of the preceding claims.

14. The battery module (200) according to claim 13, further comprising the battery terminal (210), the battery terminal (210) being connected to the second connection portion (34) of the current collector (30) of each battery cell (100).

15. A vehicle (1000) comprising the battery module (200) according to claim 13 or 14 or the battery cell (100) according to any one of claims 1 to 12.

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