Protective element for arrangement on or in a device, and device comprising a protective element

Abstract

The present invention relates to a protective element (100) for arrangement on or in a device (102), in particular on or in an electrical energy storage device, wherein the protective element (100) comprises a support structure (104) and at least one insulating layer (106, 106a, 106b, 106c). The protective element (100) also comprises at least one connecting layer (108a, 108b, 108c, 108d) for connecting the support structure (104) to the at least one insulating layer (106, 106a, 106b, 106c).

Description

[0001] Protective element for arrangement on or in a device and device with a protective element

[0002] The present invention relates to a protective element for arrangement on or in a device and to a device with such a protective element.

[0003] Many devices, especially electrical energy storage devices, are subject to numerous challenges and / or stresses.

[0004] For example, during operation and / or storage, climatic and / or mechanical influences often occur that place stress on the devices.

[0005] Such stresses can not only lead to a reduction in efficiency, but also to damage or even failure of the device.

[0006] For example, thermal runaway (i.e. an exothermic chain reaction; also known as thermal runaway) in an energy storage device poses a great risk.

[0007] Current state-of-the-art housings include housings made of special polymers and single- or multi-layer metallic housings (e.g., cast aluminum). Housings with an additional, internal protective layer (e.g., molded mica) are also known.

[0008] In addition, functional coatings are known, e.g. in the form of intumescent paint for increased flame protection, paints against corrosion or paints to increase (electrical) dielectric strength.

[0009] Due to the wide range of requirements, the known approaches are very diverse. However, they often do not offer complete protection. Material combinations that offer sufficient resistance against thermal runaway in battery cells, for example, can prove disadvantageous due to their weight.

[0010] Material combinations that provide sufficient protection against electrical breakdown may, for example, be unsuitable with regard to thermal requirements.

[0011] The variety of material combinations and solution approaches is even more diverse than the requirements placed on them. Therefore, no system is currently known that comprehensively meets all technical and commercial requirements.

[0012] The present invention is therefore based on the object of providing a protective element and a device which are adapted to different protection requirements and at least reduce the above disadvantages.

[0013] With regard to the protective element, the object is achieved according to the invention by a protective element having the features of claim 1. With regard to the device, the object is achieved according to the invention by a device having the features of claim 17.

[0014] Advantageous embodiments, further developments and variants are specified in the subclaims.

[0015] The advantages and preferred embodiments listed with regard to the protective element are to be transferred analogously to the device and vice versa.

[0016] Specifically, the task directed at the protective element is solved by a protective element for arrangement on or in a device.

[0017] In particular, the device may be an electrical energy storage device, for example a box with one or more batteries or battery cells.

[0018] In an alternative embodiment, the protective element can also be part of the device, for example, part of the electrical energy storage device. In particular, the protective element can preferably be part of a housing or be arranged between individual cells, e.g., battery cells, of the electrical energy storage device. The protective element then preferably forms a so-called intercellular protective element.

[0019] Advantageously, the protective element has a support structure and at least one insulating layer and at least one connecting layer.

[0020] It may be advantageous if the support structure thermally, mechanically, and / or chemically protects and / or shields one or more insulating layers, in particular spatially separating them from thermal influences. Alternatively or additionally, the support structure may be thermally, mechanically, and / or chemically protected and / or shielded by one or more insulating layers.

[0021] Mechanical protection is preferably achieved in particular by using a material which is mechanically robust and abrasion-resistant when exposed to particle-laden hot gas, in particular from an outgassing battery cell.

[0022] The support structure preferably forms a kind of core of the protective element.

[0023] The support structure is preferably formed from a solid material, i.e. it does not have, for example, any air and / or material inclusions made from another material.

[0024] Alternatively, the support structure can preferably be formed as a framework. The support structure can also preferably have interstices. For example, a material different from the framework material can be introduced into the interstices. For example, the interstices can contain air to form a lightweight support structure.

[0025] The at least one insulating layer preferably serves to insulate and thus protect the device against various influences.

[0026] Preferably, the connecting layer serves to connect the support structure to the at least one insulating layer. The layers can be connected to one another, for example, by adhesive bonding, over the entire surface or only partially, in particular locally intermittently and / or in a regular pattern.

[0027] For example, it can be provided that the support structure is connected, for example glued, to one or more insulating layers over its entire surface or only partially, in particular locally intermittently and / or in a regular pattern.

[0028] The connecting layer can, for example, be part of the support structure and / or part of the insulating layer or a separate layer.

[0029] Furthermore, alternatively or additionally, the connecting layer can be an adhesion and / or cohesion layer, so that the support structure and the at least one insulating layer are preferably connected to one another by attractive forces between similar particles within a material and / or by attractive forces at an interface between two different materials, e.g., the material of the support structure and the material of the insulating layer. According to this embodiment, therefore, preferably no separate connecting layer is arranged between the support structure and the respective insulating layer. Rather, the connecting layer is then the transition region or boundary region between the adjacent parts or layers.

[0030] By choosing at least one suitable insulating layer, various protection and insulation requirements can be advantageously taken into account.

[0031] In this way, for example, climatic and / or mechanical and / or physical and / or chemical and / or mechanical influencing factors can be counteracted by adapting the protective element to the respective stresses by means of different insulating layers.

[0032] A (functional) impairment of the device can advantageously be at least reduced or completely avoided.

[0033] In one embodiment, the support structure comprises or is formed from one or more support layers. In particular, the support structure can comprise one or more metal layers.

[0034] The plurality of carrier layers, in particular the plurality of metal layers, preferably provide protection against mechanical stresses and / or penetration of foreign bodies (into the protective element and / or the device) and / or thermal stresses and / or electromagnetic stresses.

[0035] For example, a thermal breakdown of a cell can lead to electrical charging of components of the device and / or the protective element. Therefore, at least part of the protective element is preferably designed to be electrically conductive.

[0036] It may be advantageous if the support structure and / or a layer, for example an insulating layer, arranged on a side of the support structure facing away from the cell, is designed as or comprises an electrically conductive layer. This can, in particular, prevent a potential buildup through immediate dissipation and / or grounding.

[0037] For example, it can be provided that the conductivity of the carrier structure and / or the layer results from the use of electrically conductive particles.

[0038] In an alternative embodiment, the support structure may comprise one or more layers of wood.

[0039] It may be advantageous if the plurality of carrier layers are connected to one another to form the carrier structure, for example, are glued to one another and / or are connected to one another by the adhesion and / or cohesion forces described above.

[0040] Preferably, the support structure extends completely or partially over the length and / or the surface of the protective element.

[0041] According to a preferred embodiment, the support structure can be electrically insulated at its end faces. It may be advantageous for the protective element to comprise multiple insulating layers. In particular, the multiple insulating layers can be arranged on both sides of the support structure.

[0042] This can increase the protective or insulating effect of the protective element. Such a design can also be referred to as a multi-layer composite for the purposes of this application and due to its multi-layer structure.

[0043] Particularly preferably, the plurality of insulating layers differ from one another with regard to their insulating properties. In particular, the plurality of insulating layers differ with regard to their thermal and / or electrical and / or electromagnetic and / or mechanical insulating properties.

[0044] However, the different insulating properties are not limited to those mentioned above. Other insulating properties are also conceivable, such as physical and / or chemical insulating properties and / or any application-specific insulating properties.

[0045] For example, at least one of the plurality of insulating layers has a preferably thermal insulating effect, while at least one other of the plurality of insulating layers has a preferably electrical insulating effect.

[0046] By means of such a design, the protective element can be preferably adapted to, for example, specified (insulation) requirements.

[0047] In one embodiment, exactly one connecting layer is preferably arranged between several of the insulating layers. Thus, the protective element can have a total of several connecting layers, which preferably increases the mechanical cohesion of the protective element.

[0048] It may also be advantageous if at least one insulating layer has a thickness in the range of 0.01 mm to 1 mm, in particular in the range of 0.05 mm to 0.8 mm, especially in the range of 0.2 mm to 0.6 mm. If the protective element has multiple insulating layers, the multiple insulating layers can either have the same thickness or, alternatively, have different thicknesses.

[0049] Furthermore, it may be advantageous if at least one insulating layer has different thicknesses in some areas and / or a structured surface.

[0050] According to an alternative embodiment, all insulating layers preferably have different thicknesses in some areas and / or a structured surface.

[0051] For the purposes of this application, the term "structured surface" can be understood to mean, for example, a nubby and / or groove-like surface. Such structured surfaces can, for example, increase the surface area and thus advantageously create an effective insulating surface.

[0052] Preferably, at least one insulating layer may comprise a coating or a single insulating layer.

[0053] In particular, at least one insulating layer can be a coating or a single insulating layer.

[0054] Furthermore, alternatively, at least one insulating layer can preferably comprise a plurality of individual insulating layers or be formed from a plurality of individual insulating layers. The plurality of individual insulating layers can, for example, be glued together to form the insulating layer.

[0055] In one embodiment, the protective element is arranged at least in part on or in the device.

[0056] Particularly preferably, the protective element is arranged at least in regions on an outer side or an inner side of a wall of the device.

[0057] According to an alternative embodiment, the protective element can preferably also be arranged between two components of the device, in particular the electrical energy storage device. For example, the protective element can be arranged between two battery cells inside a battery (box). This is advantageous because the protective element can be arranged precisely at the location on the device where the device is to be or must be protected.

[0058] According to a further embodiment, at least one insulating layer surrounds the support structure in regions.

[0059] In an alternative embodiment, at least one insulating layer preferably completely surrounds the support structure.

[0060] In particular, by completely surrounding the support structure by at least one insulating layer, the support structure can also be advantageously protected by the at least one insulating layer.

[0061] It may also be advantageous if the support structure comprises a metal or is formed from a metal.

[0062] For example, the support structure may comprise stainless steel and / or aluminum and / or a metal alloy.

[0063] The advantage here is that the support structure has sufficient mechanical stability and can therefore protect the protective element and thus the device preferentially against mechanical stress.

[0064] Furthermore, the thermal conductivity of metal advantageously contributes to the distribution of local heating of the support structure.

[0065] In an alternative embodiment, the support structure may comprise wood and / or plastic or be formed from wood and / or plastic.

[0066] The wooden support structure allows for a lighter support structure compared to a metal one. However, the material of the support structure is not limited to the aforementioned metal, wood, and / or plastic. Rather, any suitable material can be used for the support structure.

[0067] For the purposes of this application, the term suitable material can be understood as a material that generally meets the requirements of the support structure and, for example, mechanically stabilizes the protective element and / or imparts a thermal and / or electromagnetic insulating effect to the protective element.

[0068] It can be advantageous if at least one insulating layer comprises or is formed from a thermally insulating material.

[0069] For example, at least one insulating layer comprises silicate fibers and / or thermal insulating paper and / or glass fabric and / or ceramic fiber mats and / or a temperature-resistant plastic foam and / or a temperature-resistant lacquer or is formed from such materials.

[0070] Furthermore, in one embodiment, the insulating layer may comprise an insulating paper or be formed from an insulating paper.

[0071] Furthermore, at least one insulating layer may preferably comprise an intumescent material.

[0072] For the purposes of this application, the term "intumescent material" refers to a material that increases in volume and decreases in density when exposed to heat. For example, the intumescent material can form a foamed ash layer that prevents the supply of oxygen and thus prevents flame spread.

[0073] It may be particularly preferred, for example, if the outermost insulating layer of the protective element comprises an intumescent material or is formed from an intumescent material. This embodiment ensures that the insulating layer comprising the intumescent material is the first to come into contact with the heat, for example in the event of a fire, and can thus optimally develop its protective or insulating effect. Non-limiting examples of intumescent materials include: water-based intumescent material, solvent-based intumescent material, or epoxy-based intumescent material.

[0074] The thermal properties of intumescent materials, in particular, are determined specifically by their chemical composition. Particularly suitable intumescent materials, for example, contain a water-soluble alkali silicate binder. Such materials preferably have a silica content of no more than 96% and / or an N-octyl-2-pyrrolidone content between 0.1% and 1%.

[0075] In addition, it may be advantageous if the intumescent material contains an additive.

[0076] The additive can, for example, comprise or be formed from a thermal insulation material, particularly an aerogel. Such thermal insulation materials exhibit low thermal conductivity and are often certified accordingly. One such certificate or test is the UL94 flame test. By forming the additive as a thermal insulation material, the thermal protection of the insulation layer can be increased. In addition to the thermal protection effect of an aerogel, it also protects against electrical breakdown, thus also improving the electrical resistance when using an aerogel.

[0077] Suitable aerogels include, for example, aerogels formed as hydrophilic and synthetic, highly amorphous silicate solids. Such aerogels have, for example, particle sizes in the range of 1 to 70 pm, preferably in the range of 1 to 20 pm, and especially in the range of 10 to 15 pm. Furthermore, these aerogels have pore sizes in the range of 1 to 50 nm, preferably in the range of 10 to 30 nm, and especially in the range of 15 to 25 nm. The thermal conductivity of such aerogels ranges between 0.025 and 0.03 W / (mK).

[0078] To further increase the mechanical resistance of the insulating layer, it may be advantageous if the additive comprises or is formed from fibres, in particular glass fibres and / or metal fibres and / or metal alloy fibres and / or ceramic fibres.

[0079] Alternatively or additionally, a fleece or fabric made of the above-mentioned materials may be provided instead of or in addition to the fibers.

[0080] However, the above-mentioned additives are not limited to use with or in an intumescent material. Rather, the additives can also be contained in one or more of the insulating and / or bonding layer materials listed in this application.

[0081] It may be particularly advantageous if at least one insulating layer and / or at least one carrier structure, in particular at least one carrier layer, contains at least one high-temperature stable alloy according to formula (I)

[0082] MCrAIXZ (I) contains or is formed from, wherein

[0083] M stands for at least one of the chemical elements Ni, Co, Fe,

[0084] X represents at least one optional chemical element selected from Y, Si and / or Ti,

[0085] Z stands for at least one optional additional chemical element.

[0086] The chemical elements that X and Z can represent are optional.

[0087] If only the chemical element X or only chemical elements X are present but chemical elements Z are missing, the formula (I) can be MCrAIX.

[0088] If only the chemical element Z or only chemical elements Z are present, but chemical elements X are missing, the formula (I) can be MCrAlZ.

[0089] If chemical elements X and Z are missing, the formula (I) can be MCrAI.

[0090] M can preferably represent at least one of the chemical elements Ni or Co.

[0091] It may be particularly preferred if M represents the chemical element Ni. X may preferably represent the chemical element Y.

[0092] Z may preferably comprise at least one of the chemical elements Ta, Mo, W, C, B, Zr, Nb, Hf.

[0093] A mass fraction of the chemical element Cr can advantageously be 2 to 55 wt.%, preferably 4 to 45 wt.%, particularly preferably 6 to 40 wt.%, e.g. 10 to 30 wt.%.

[0094] A mass fraction of the chemical element Al can advantageously be 1 to 35 wt.%, preferably 1.5 to 28 wt.%, particularly preferably 1.5 to 18 wt.%, e.g. 2 to 10 wt.%.

[0095] A mass fraction of the optional chemical element(s) represented by X can advantageously be up to 5 wt.%, preferably 0.01 to 4 wt.%, particularly preferably 0.02 to 3 wt.%, e.g., 0.03 to 3 wt.%. If X represents more than one of the chemical elements Y, Si, or Ti, the multiple chemical elements represented by X are included in the calculation of the mass fraction.

[0096] A mass fraction of the chemical element(s) represented by Z can advantageously be up to 18 wt.%, preferably 0.001 to 18 wt.%, particularly preferably 0.02 to 15 wt.%. If Z represents more than one chemical element, the multiple chemical elements represented by Z are included in the calculation of the mass fraction.

[0097] The mass fraction of the chemical element(s) represented by M can advantageously be 8 to 97 wt.%, preferably 20 to 95 wt.%, particularly preferably 45 to 93 wt.%. If M represents more than one chemical element, the multiple chemical elements represented by M are included in the calculation of the mass fraction.

[0098] According to one embodiment, several of the insulating layers can also comprise or be formed from a thermally insulating material, e.g., of the type mentioned above. Such insulating layers preferably increase the thermal insulation effect of the protective element and, for example, offer protection in the event of thermal runaway, for example, of battery cells of the device designed as an energy storage device.

[0099] However, the thermally insulating material is not limited to those listed above. Rather, other materials that preferably exhibit thermal insulating properties can also be used.

[0100] With regard to electrical insulation, it may also be advantageous if at least one insulating layer comprises or is formed from an electrically insulating material.

[0101] For example, at least one insulating layer comprises a plastic and / or a ceramic and / or a plastic film or is formed from such a material.

[0102] With regard to the electrically insulating aspect, when using an intumescent material in one or more insulating layers, the intumescent material may also comprise an additive which preferably comprises or is formed from ceramic particles.

[0103] According to one embodiment, several of the insulating layers may also comprise or be formed from an electrically insulating material, e.g. of the type mentioned above.

[0104] However, the electrically insulating material is not limited to the materials listed above. Rather, other materials that preferably exhibit electrical insulating properties may also be used.

[0105] Particularly preferred is a ceramic-based coating and / or a water-based coating and / or a glass-based coating and / or an epoxy-based coating and / or a powder coating.

[0106] Advantageously, ceramic-based coatings can form or have a thermal and / or electrical insulating effect and / or mechanically robust reinforcement. For example, a ceramic-based coating can provide protection against particle impact in the event of a thermal runaway. Ceramic coatings preferably withstand temperatures of 1,000°C and above.

[0107] The water-based coating can, for example, be a polymer coating.

[0108] Glass-based coatings, for example, can increase the physical and / or chemical resistance of the protective element and thus of the device.

[0109] The epoxy-based coating can, for example, be a two-component epoxy coating. Such coatings preferably offer protection against moisture and / or chemicals and / or dirt and / or dust.

[0110] Alternatively or additionally, the coating may preferably also comprise a lacquer or be formed from a lacquer. The lacquer may, for example, be a flame-retardant lacquer and / or a corrosion-protection lacquer and / or an electrical insulation lacquer.

[0111] Advantageously, the paint can be applied by brushing and / or rolling and / or spraying and / or by dip coating.

[0112] Furthermore, it may be advantageous if the coating comprises or is formed from an intumescent material, particularly of the type already explained above. Such coatings made of intumescent materials have proven advantageous because they enable thin and lightweight yet highly resistant insulation.

[0113] Furthermore, according to one embodiment, at least one insulating layer may comprise or be formed from a mechanically robust material. For example, at least one insulating layer may comprise or be formed from a fiber-reinforced composite material.

[0114] In one embodiment, at least one connecting layer comprises or is formed from a binder. In particular, the binder can advantageously be a ceramic-based binder and / or a water-based binder and / or a glass-based binder and / or an epoxy-based binder.

[0115] Due to the various design options of the binder of at least one connecting layer, this can - in addition to the function of connecting the support structure and at least one insulating layer to one another - preferably also have a thermal and / or electrical and / or electromagnetic and / or moisture insulating effect and thus advantageously increase the overall protective effect of the protective element.

[0116] According to one embodiment, at least one connecting layer may comprise or be formed from an adhesive.

[0117] In particular, the adhesive may be an acrylate-based adhesive.

[0118] Particularly preferably, the adhesive may be an adhesive tape, in particular a double-sided adhesive tape.

[0119] It may also be advantageous if the adhesive has reinforcing structures. Such reinforcing structures can be, for example, fabric structures and / or scaffold-like reinforcements, e.g., made of plastic.

[0120] Specifically, the object directed to the device is achieved by a device, in particular an electrical energy storage device, which comprises a protective element of the type described above.

[0121] According to one embodiment, the device may preferably be one or more of the following devices listed as examples:

[0122] - a housing; and / or

[0123] - a module cover; and / or

[0124] - a battery cover; and / or

[0125] - an electrical energy storage device; and / or

[0126] - a battery cell. Furthermore, in one embodiment, the protective element can also be arranged between two cells of the device, in particular between two battery cells. As a result, the protective element advantageously forms inter-cell insulation, in particular to prevent or at least slow down the spread of thermal runaway to adjacent cells. Through this arrangement of the protective element and / or with a suitable choice of the material of the at least one insulating layer, requirements regarding compressibility and / or mechanical alternating stress and / or heat distribution between and / or within the two cells of the device can be addressed.

[0127] Alternatively, the device may also be a component in the combustion engine environment.

[0128] Further preferred features and / or advantages of the invention are the subject of the following description and the drawings of exemplary embodiments.

[0129] The drawings show:

[0130] Fig. 1 is a schematic representation of a cross section of a first embodiment of the protective element;

[0131] Fig. 2 is a schematic representation of a cross section of a second embodiment of the protective element;

[0132] Fig. 3 is a schematic representation of a cross section of a third embodiment of the protective element;

[0133] Fig. 4 is a schematic representation of a cross section of a fourth embodiment of the protective element;

[0134] Fig. 5 is a schematic representation of a cross section of a fifth embodiment of the protective element; Fig. 6 is a schematic representation of a cross section of a sixth embodiment of the protective element;

[0135] Fig. 7 is a schematic representation of a cross section of a seventh embodiment of the protective element;

[0136] Fig. 8 is a schematic representation of a cross section of an eighth embodiment of the protective element; and

[0137] Fig. 9 is a schematic representation of a cross section of a ninth embodiment of the protective element.

[0138] Identical or functionally equivalent elements are provided with the same reference numerals in all figures.

[0139] With reference to Fig. 1, a schematic representation of a cross section of a protective element 100 according to a first embodiment is shown.

[0140] The embodiment of the protective element 100 shown also represents the simplest embodiment.

[0141] The protective element 100 is intended for arrangement on or in a device 102. For the sake of simplicity, the device 102 is shown in the figures only as a hatched rectangle.

[0142] The device 102 may preferably be an electrical energy storage device, in particular a housing of such a device. Alternatively, the device 102 may be, for example:

[0143] - a module cover; and / or

[0144] - a battery cover; and / or

[0145] - an electrical energy storage device; and / or

[0146] - a battery cell. Furthermore, it is conceivable that device 102 is a component in the combustion engine environment.

[0147] The protective element 100 serves in particular to protect the device 102, in particular a wall of the device or adjacent elements to be protected.

[0148] The protective element 100 may preferably extend completely along the length and / or surface of the device 102, such that the protective element 100 completely surrounds the device 102.

[0149] Alternatively, the protective element 100 may extend only partially along the length and / or surface of the device 102, so that only a part of the device 102 is covered by the protective element 100.

[0150] The protective element 100 comprises a support structure 104. In the exemplary embodiment according to Fig. 1, the support structure 104 is designed as a support layer. For the purposes of this application, the term "layer" can be understood as a geometry of the respective component whose longitudinal extent or surface area is greater than its height or thickness, for example, by a factor of at least approximately 5, in particular at least approximately 20.

[0151] Alternatively - but not shown - the support structure 104 can also comprise several support layers.

[0152] The support structure 104 may further comprise a metal or preferably be formed from a metal.

[0153] Particularly preferably, the support structure 104 is formed from a solid material, ie it is formed from a compact body of a material, e.g. stainless steel or aluminum.

[0154] As a result, the support structure 104 advantageously forms a kind of core of the protective element 100, which, due to the material used, exerts a mechanical and / or thermal protective effect. The support structure 104 preferably stabilizes the protective element 100. Furthermore, the support structure 104 preferably protects one or more insulating layers 106 from mechanical and / or thermal and / or chemical stress.

[0155] According to one embodiment, the support structure 104 may comprise wood and / or plastic or be formed from such a material. This has proven particularly advantageous with regard to reducing the weight of the support structure 104.

[0156] The support structure 104 preferably extends over the entire surface, i.e. over the entire width and / or length, of the device 102. This is illustrated in Fig. 1.

[0157] Alternatively, the support structure 104 may preferably extend only partially over or along the device 102, so that only a portion of the device 102 is covered by the support structure 104. This is illustrated graphically below in Figs. 2 to 9.

[0158] Furthermore, the protective element 100 has an insulating layer 106. The insulating layer 106 serves to protect, in particular insulate, the device 102.

[0159] Accordingly, the insulating layer 106 is designed in particular as an electrical and / or thermal and / or electromagnetic insulation of the device 102 or forms such.

[0160] The insulating layer 106 may, for example, comprise or be formed from a thermally insulating material. Non-limiting examples of such thermally insulating materials include silicate fibers and / or thermal insulation paper and / or glass fabric and / or ceramic fiber mats.

[0161] Alternatively or additionally, the insulating layer 106 may preferably comprise an electrically insulating material or be formed from such a material. Non-limiting examples of electrically insulating materials are plastic and / or ceramics and / or plastic films. By using a ceramic as the material of the insulating layer 106, for example, in addition to electrical insulation, thermal insulation and / or mechanically robust reinforcement is achieved. This mechanically robust reinforcement has proven particularly advantageous in the case of particle impacts, for example, in the event of thermal runaway.

[0162] Furthermore, alternatively or additionally, the insulating layer 106 may comprise an electromagnetically insulating material. A non-limiting example of electromagnetically insulating materials are ferromagnetic materials, e.g., mu-metal.

[0163] The insulating layer 106 preferably has a thickness in the range of 0.01 mm to 1 mm, in particular in the range of 0.05 mm and 0.8 mm and especially in the range of 0.2 mm to 0.6 mm.

[0164] For example, the thickness of the insulating layer 106 may vary depending on the material used and / or depending on a required insulating property.

[0165] To connect the support structure 104 to the insulating layer 106, the protective element 100 comprises a connecting layer 108a.

[0166] The connecting layer 108a may, for example, be an adhesive layer that connects the support structure 104 and the insulating layer 106 to one another in the manner of an adhesive.

[0167] Preferably, the connecting layer 108a may comprise a binder or be formed from a binder. In particular, the binder is a ceramic-based binder.

[0168] Such a ceramic-based binder preferably additionally provides electrical and / or thermal insulation and thus preferably increases the overall thermal and / or electrical insulating effect of the protective element 100.

[0169] According to a further embodiment, the binder is preferably a glass-based binder. Such binders have also proven advantageously suitable with regard to their electrical and / or thermal insulating properties. In an alternative embodiment, it may be advantageous for the binder to be an epoxy-based binder. Epoxy-based binders have the advantage of being resistant to alkalis and / or acids and / or solvents.

[0170] According to a further embodiment, the binder is preferably a water-based binder.

[0171] As already mentioned, the possibility of varying the material of the connecting layer 108a thus enables simple adaptation to the protection requirements, which advantageously increases the overall protective effect of the protective element 100 and makes it adaptable.

[0172] Furthermore, the protective element 100 can also be arranged, as shown in Fig. 1, by a connecting layer 108b on an outer side 110 of a wall 112 of the device 102. This optional connecting layer 108b is shown only in dashed lines in Fig. 1.

[0173] Thus, the support structure 104 is connected to the device 102 on one side by means of a connecting layer 108b and to the insulating layer 106 on the other side by means of a connecting layer 108a.

[0174] The support structure 104, the connecting layer 108a, which is arranged between the support structure 104 and the insulating layer 106, and the insulating layer 106 form the protective element 100.

[0175] Alternatively, the protective element 100 can also be arranged on an inner side 114 of the wall 112 of the device 102.

[0176] Furthermore, in an embodiment not shown, it is conceivable that a protective element 100 is arranged both on an inner side 114 of the wall 112 and on an outer side 110 of the wall 112.

[0177] Alternatively, the protective element 100 can also be attached to the device 102 in another way, e.g., by screwing. To clarify this embodiment, the connecting layer 108b, which is arranged between the device 102 and the support structure 104, is shown only in dashed lines in Fig. 1.

[0178] Viewed in the image plane in the direction of the device 102, the protective element 100 thus has the following structure: insulating layer 106, connecting layer 108a, support structure 104, (optional) connecting layer 108b.

[0179] Furthermore, all layers 104, 106, 108a, b extend along the entire length and / or surface of the protective element 100. Alternatively, however, it is conceivable that one or more of the aforementioned layers 104, 106, 108a, b extend only partially along the length and / or surface of the protective element 100.

[0180] Fig. 2 shows a second embodiment of the protective element 100 according to the invention.

[0181] As can be seen from the cross section shown, the protective element 100 also has a support structure 104.

[0182] Furthermore, the protective element 100 according to Fig. 2, in contrast to the protective element 100 according to Fig. 1, has two insulating layers 106a, b.

[0183] Preferably, the two insulating layers 106a, b differ from one another in terms of their insulating properties. In particular—but not restrictively—the two insulating layers 106a, b may differ in terms of their thermal and / or electrical and / or electromagnetic insulating properties. A difference in terms of their mechanical protective capability, robustness, and / or resistance is also conceivable.

[0184] As a non-limiting example, one of the two insulating layers 106a, b may be formed as an electrical insulating layer for electrical insulation, while the other insulating layer 106a, b may be formed as a thermal insulating layer for thermal insulation.

[0185] A protective element 100 configured in this way thus preferably provides electrical and thermal protection or electrical and thermal insulation. However, other combinations of different insulation materials and properties are also conceivable, so that the protective element 100 can be individually adapted.

[0186] The insulating layers 106a, b are connected to the support structure 104 via connecting layers 108a, b. As can be seen from Fig. 2, the insulating layers 106a, b are arranged on both sides of the support structure 104: One connecting layer 108a, b connects each of the insulating layers 106a, b to one side of the support structure 104.

[0187] Furthermore, the protective element 100 is arranged on the device 102 by a connecting layer 108c. In the embodiment according to Fig. 2, this connecting layer 108c is also part of the protective element 100.

[0188] Viewed in the image plane in the direction of the device 102, the protective element 100 thus has the following structure: insulating layer 106b, connecting layer 108a, support structure 104, connecting layer 108b, insulating layer 106a, connecting layer 108c.

[0189] Furthermore, all layers 104, 106a, b, 108a, b, c extend along the entire length and / or surface of the protective element 100. Alternatively, however, it is conceivable that one or more of the aforementioned layers 104, 106a, b, 108a, b, c extend only partially along the length and / or surface of the protective element 100.

[0190] As can be seen from Fig. 2, the protective element 100 does not extend over the entire surface of the device 102. Rather, the protective element 100 is arranged only in certain regions on the device 102.

[0191] Furthermore, the layers 104, 106a, b, 108a, b, c may have different thicknesses and / or structured surfaces.

[0192] Otherwise, the embodiment of a protective element 100 shown in Fig. 2 corresponds to the embodiment shown in Fig. 1 in terms of its function and / or mode of operation and / or its ability to be modularly constructed, so that reference is made to the above description of the latter in this regard. Referring to Fig. 3, a third embodiment of the protective element 100 according to the invention is shown in cross section.

[0193] The protective element 100 also has a support structure 104.

[0194] Furthermore, the protective element 100 has two insulating layers 106a, b. The insulating layers 106a, b are preferably arranged on both sides of the support structure 104, namely an insulating layer 106a on one side and an insulating layer 106b on the other side of the support structure 104.

[0195] The two insulating layers 106a, b are each connected to the support structure 104 via a connecting layer 108a, b.

[0196] In the embodiment shown in Fig. 3, the two insulating layers 106a, b comprise the same insulating material. This is illustrated graphically in Fig. 3 by identical hatching.

[0197] For example—but not by way of limitation—the two insulating layers 106a, b comprise an electrically insulating material. This preferably increases the electrical insulation performance of the protective element 100.

[0198] In an alternative embodiment, both insulating layers 106a, b comprise a thermally insulating material.

[0199] According to a further embodiment, both insulating layers 106a, b comprise an electromagnetically insulating material.

[0200] Viewed in the image plane in the direction of the device 102, the protective element 100 thus has the following structure: insulating layer 106b, connecting layer 108a, support structure 104, connecting layer 108b, insulating layer 106a, connecting layer 108c.

[0201] Furthermore, all layers 104, 106a, b, 108a, b, c extend along the entire length and / or surface of the protective element 100. Alternatively, however, it is conceivable that one or more of the aforementioned layers 104, 106a, b, 108a, b, c extend only partially along the length and / or surface of the protective element 100. Furthermore, the layers 104, 106a, b, 108a, b, c can have different thicknesses and / or structured surfaces.

[0202] Furthermore, the embodiment of a protective element 100 shown in Fig. 3 corresponds to the embodiments shown in Figs. 1 and 2 in terms of its function and / or mode of operation and / or capability for modular construction, so that reference is made to their above description in this respect.

[0203] In Fig. 4, a fourth embodiment of the protective element 100 according to the invention is shown in cross section.

[0204] Just like the protective elements 100 already described, the protective element 100 according to the fourth embodiment also has a support structure 104. Likewise, the support structure 104 according to Fig. 4 is preferably designed as a support layer.

[0205] However, the protective element 100 according to the fourth embodiment comprises three insulating layers 106a, b, c.

[0206] An insulating layer 106c is arranged on one side of the support structure 104 by means of a connecting layer 108a. An insulating layer 106b is also arranged on the other side of the support structure 104 by means of a further connecting layer 108b. Thus, the support structure 104 according to Fig. 4 has an insulating layer 106b, c on both sides.

[0207] Viewed in the image plane, a further insulating layer 106a is arranged on the insulating layer 106b facing the device 102 via a connecting layer 108c.

[0208] This further insulating layer 106a is further preferably arranged by means of a connecting layer 108d on the device 102 and in particular on the outer side 110 of the wall 112 of the device 102.

[0209] Alternatively, the protective element 100 according to Fig. 4 can also be arranged on the inner side 114 of the wall 112 or on both sides of the wall 112. In summary, the protective element 100 according to the fourth embodiment therefore has a support structure 104, three insulating layers 106a, b, c, and four connecting layers 108a, b, c, d.

[0210] Viewed in the image plane in the direction of the device 102, the protective element 100 thus has the following structure: insulating layer 106c, connecting layer 108a, support structure 104, connecting layer 108b, insulating layer 106b, connecting layer 108c, insulating layer 106a, connecting layer 108d.

[0211] Furthermore, all layers 104, 106a, b, c, 108a, b, c, d extend along the entire length and / or surface of the protective element 100. Alternatively, however, it is conceivable that one or more of the mentioned layers 104, 106a, b, c, 108a, b, c, d extend only partially along the length and / or surface of the protective element 100.

[0212] Furthermore, the layers 104, 106a, b, c, 108a, b, c, d may have different thicknesses and / or structured surfaces.

[0213] Furthermore, the embodiment of a protective element 100 shown in Fig. 4 corresponds in terms of its function and / or mode of operation and / or the ability to be constructed in a modular manner to the embodiments shown in Figs. 1 to 3, so that reference is made to their above description in this respect.

[0214] The fifth embodiment of a protective element 100 according to the invention shown with reference to Fig. 5 is also arranged on the device 102.

[0215] Like the protective elements 100 already described above, the protective element 100 according to Fig. 5 also has a support structure 104.

[0216] However, the support structure 104 does not extend over the entire length of the protective element 100.

[0217] Rather, in contrast to the previously explained embodiments, the support structure 104 is also surrounded by the connecting layer 108b at its end faces. In this embodiment, the support structure 104 is thus completely surrounded by the connecting layer 108a, b, c.

[0218] The protective element 100 is attached to the device 102, in particular to the outer side 110 of the wall 112 of the device 102, via a further connecting layer 108d with the insulating layer 106a.

[0219] Such a configuration with a completely enclosed support structure 104 may prove to be advantageous, in particular, when the protective element 100 is arranged only in certain regions on or in the device 102.

[0220] Because the end faces of the support structure 104 are surrounded by the connecting layer 108b, insulation is preferably also formed on the end faces of the support structure 104. This is particularly the case if the connecting layer 108b preferably comprises a binder with insulating properties of the type already described.

[0221] Viewed in the image plane in the direction of the device 102, the protective element 100 thus has the following structure: insulating layer 106b, connecting layer 108a, support structure 104 surrounded by a connecting layer 108b, connecting layer 108c, insulating layer 106a, connecting layer 108d.

[0222] Furthermore, the layers 104, 106a, b, 108a, b, c, d may have different thicknesses and / or structured surfaces.

[0223] Furthermore, the embodiment of a protective element 100 shown in Fig. 5 corresponds to the embodiments shown in Figs. 1 to 4 in terms of its function and / or mode of operation and / or capability for modular construction, so that reference is made to their above description in this respect.

[0224] With reference to Fig. 6, a cross section of a sixth embodiment of the protective element 100 is shown.

[0225] In terms of construction, the protective element 100 according to Fig. 6 also has a support structure 104. The support structure 104 is preferably designed as a support layer. In contrast to the protective elements 100 already described, the protective element 100 shown in Fig. 6 has an insulating layer 106b designed as a coating. This insulating layer 106b is arranged, in particular applied, on the support structure 104.

[0226] Preferably, the insulating layer 106b formed as a coating is thinner than an insulating layer 106 formed as a single insulating layer.

[0227] The protective element 100 can preferably be made thinner overall without advantageously sacrificing or reducing insulating properties.

[0228] In the exemplary embodiment according to Fig. 6, the insulating layer 106b formed as a coating is arranged, in particular applied, directly on the carrier structure 104, i.e. preferably without a connecting layer 108.

[0229] Furthermore, the protective element 100 also has an insulating layer 106a, which is designed as a single insulating layer. A connecting layer 108a is arranged between this insulating layer 106a and the support structure 104, by which the insulating layer 106a is connected to the support structure 104.

[0230] Preferably, the insulating layer 106b formed as a coating and the insulating layer 106a formed as a single insulating layer differ in their insulating properties. In particular, the two insulating layers 106a, b differ in their thermal and / or electrical and / or electromagnetic insulating properties.

[0231] The protective element 100 according to Fig. 6 is arranged on the device 102, analogously to the previously explained embodiments, with the insulating layer 106a formed as a single insulating layer. For this purpose, a connecting layer 108b is preferably arranged between the insulating layer 106a and the device 102 for connection.

[0232] Viewed in the image plane in the direction of the device 102, the protective element 100 thus has the following structure: insulating layer 106b formed as a coating, support structure 104, connecting layer 108a, insulating layer 106a, connecting layer 108b. Furthermore, all layers 104, 106a, b, 108a, b extend along the entire length and / or surface of the protective element 100. Alternatively, however, it is conceivable for one or more of the aforementioned layers 104, 106a, b, 108a, b to extend only in regions along the length and / or surface of the protective element 100.

[0233] Furthermore, the layers 104, 106a, b, 108a, b may have different thicknesses and / or structured surfaces.

[0234] Furthermore, the embodiment of a protective element 100 shown in Fig. 6 corresponds to the embodiments shown in Figs. 1 to 5 in terms of its function and / or mode of operation and / or capability for modular construction, so that reference is made to their above description in this respect.

[0235] In the seventh embodiment of the protective element 100 according to the invention, the protective element 100 is also connected to the device 102 via a connecting layer 108b.

[0236] In the illustrated embodiment, the protective element 100 is arranged on an outer side 110 of the wall 112 of the device 102. Alternatively or additionally, the protective element 100 can also be arranged on an inner side 114 of the wall 112 of the device 102.

[0237] According to this embodiment, the protective element 100 has a support structure 104.

[0238] The support structure 104 is connected on one side to an insulating layer 106a via a connecting layer 108a. This insulating layer 106a is preferably formed as a single insulating layer.

[0239] As can be seen from Fig. 7, the support structure 104 also extends in this exemplary embodiment only in certain regions along the protective element 100. The support structure 104 therefore does not extend over the entire length of the protective element 100. The region of the support structure 104 which is not connected to the connecting layer 108a is completely surrounded by an insulating layer 106b in the exemplary embodiment according to Fig. 7.

[0240] In particular, this insulating layer 106b is formed as a coating.

[0241] The insulating layer 106b therefore preferably also surrounds the end faces of the support structure 104. The support structure 104 is thus preferably completely enclosed by the insulating layer 106b and the connecting layer 108a.

[0242] The insulating layer 106b formed as a coating can advantageously protect the support structure 104 from various influences, such as chemical and / or physical influences.

[0243] Alternatively or additionally, the insulating layer 106b also provides an insulating and thus protective effect, so that preferably the device 102 is also insulated and thereby protected.

[0244] Particularly preferably, in this exemplary embodiment, the two insulating layers 106a, b also differ from one another in terms of their insulating properties. In particular, the two insulating layers 106a, b differ in terms of their thermal and / or electrical and / or electromagnetic insulating properties.

[0245] Viewed in the image plane in the direction of the device 102, the protective element 100 thus has the following structure: insulating layer 106b, support structure 104 surrounded by the insulating layer 106b, connecting layer 108a, insulating layer 106a, connecting layer 108b.

[0246] Furthermore, the layers 104, 106a, b, 108a, b may have different thicknesses and / or structured surfaces.

[0247] Otherwise, the embodiment of a protective element 100 shown in Fig. 7 corresponds to the embodiments shown in Figs. 1 to 6 in terms of its function and / or mode of operation and / or its ability to be modularly constructed, so that reference is made to their above description in this regard. A further embodiment of the protective element 100 is shown in cross-section in Fig. 8.

[0248] In this exemplary embodiment, the protective element 100 also has a support structure 104. The support structure 104 is preferably designed as a support layer.

[0249] A connecting layer 108a, b is arranged on both sides of the support structure 104. Each insulating layer 106a, b is connected to the support structure 104 through these connecting layers 108a, b.

[0250] The support structure 104 thus has a connecting layer 108a, b on each side as well as an insulating layer 106a, b adjoining and connected to the connecting layer 108a, b.

[0251] An additional insulating layer 106c is arranged, in particular applied, on one of the insulating layers 106b. For this purpose, the additional insulating layer 106c is preferably formed as a coating.

[0252] Particularly preferably, the additional insulating layer 106c is attached or applied directly, ie preferably without an intermediate connecting layer 108, to or on the insulating layer 106b.

[0253] The additional insulating layer 106c can further increase the insulating effect of the insulating layer 106b. Alternatively or additionally, the additional insulating layer 106c can preferably also cover another insulating property.

[0254] For example, it is conceivable for the insulating layer 106b to be an electrical insulating layer for electrical insulation, and the additional insulating layer 106c to be a thermal insulating layer for thermal insulation. Such an insulating composite can advantageously achieve both electrical and thermal insulation of the device 102.

[0255] Additionally, in this embodiment, the insulating layer 106a may be formed, for example, as an electromagnetically insulating insulating layer, so that the protective element 100 electrically, thermally and electromagnetically insulates the device 102 in this embodiment.

[0256] The device 102 can thus be protected by the protective element 100 against electrical, thermal and electromagnetic influences.

[0257] In the illustrated embodiment, the protective element 100 is arranged on an outer side 110 of the wall 112 of the device 102. Alternatively or additionally, the protective element 100 can also be arranged on an inner side 114 of the wall 112 of the device 102.

[0258] Viewed in the image plane in the direction of the device 102, the protective element 100 thus has the following structure: insulating layer 106c formed as a coating, insulating layer 106b, connecting layer 108a, carrier structure 104, connecting layer 108b, insulating layer 106a, connecting layer 108c.

[0259] Furthermore, all layers 104, 106a, b, c, 108a, b, c extend along the entire length and / or surface of the protective element 100. Alternatively, however, it is conceivable that one or more of the aforementioned layers 104, 106a, b, c, 108a, b, c extend only partially along the length and / or surface of the protective element 100.

[0260] Furthermore, the layers 104, 106a, b, c, 108a, b, c may have different thicknesses and / or structured surfaces.

[0261] Furthermore, the embodiment of a protective element 100 shown in Fig. 8 corresponds in terms of its function and / or mode of operation and / or the ability to be constructed in a modular manner to the embodiments shown in Figs. 1 to 7, so that reference is made to their above description in this respect.

[0262] Fig. 9 shows an alternative embodiment of the protective element 100. In this ninth embodiment, the protective element 100 is arranged between two devices 102. The devices 102 can be, for example, battery cells.

[0263] The protective element 100 is preferably arranged between the inner sides 114 of the wall 112 of the devices 102. By arranging the protective element 100 in this way, the two devices 102, in particular the two battery cells, can be insulated from each other and thus protected.

[0264] The protective element 100 in the embodiment according to Fig. 9 has a support structure 104.

[0265] The support structure 104 is preferably formed as a support layer.

[0266] A connecting layer 108b, c is arranged on both sides of the support structure 104. An insulating layer 106a, b is arranged on each side of the support structure 104, adjoining the two connecting layers 108b, c.

[0267] The two insulating layers 106a, b are connected, in particular glued, to the support structure 104 by the connecting layers 108.

[0268] For connection to the devices 102, connecting layers 108a, d are also arranged on the side of the insulating layers 106a, b facing away from the support structure 104.

[0269] Each of these connecting layers 108a, d connects, in particular glued, the protective element 100 to an inner side 114 of the devices 102.

[0270] Viewed in the image plane from bottom to top, the protective element 100 according to Fig. 9 thus has the following structure: connecting layer 108a, insulating layer 106b, connecting layer 108b, support structure 104, connecting layer 108c, insulating layer 106a, connecting layer 108d.

[0271] Preferably, the two insulating layers 106a, b differ from one another with regard to their insulating properties, in particular with regard to their thermal and / or electrical and / or electromagnetic insulating properties.

[0272] For example, the insulating layer 106a is designed as a thermal insulating layer. The other insulating layer 106b is designed, for example, as an electrical insulating layer. Such a structure of the protective element 100 can advantageously provide both electrical and thermal protection for the devices 102.

[0273] Alternatively, according to one embodiment, the two insulating layers 106a, b can have the same insulating properties. The protective element 100 preferably has a symmetrical structure with respect to the layers 106a, b, 108a, b, c, d arranged on both sides of the support structure 104.

[0274] Such protection can be particularly advantageous when the protective element 100 is used between two battery cells to prevent the two battery cells from thermally and / or electrically influencing each other. For example, in the event of thermal runaway in one of the battery cells, the associated effects on the other battery cell can at least be reduced.

[0275] In the exemplary embodiment according to Fig. 9, all layers 104, 106a, b, 108a, b, c, d extend along the entire length and / or surface of the protective element 100. Alternatively, however, it is conceivable that one or more of the aforementioned layers 104, 106a, b, c, 108a, b, c, d extend only partially along the length and / or surface of the protective element 100.

[0276] Furthermore, the layers 104, 106a, b, 108a, b, c, d may have different thicknesses and / or structured surfaces.

[0277] Furthermore, the embodiment of a protective element 100 shown in Fig. 9 corresponds to the embodiments shown in Figs. 1 to 8 in terms of its function and / or mode of operation and / or capability for modular construction, so that reference is made to their above description in this respect.

[0278] However, the design of the insulating properties of the insulating layers 106, 106a, b, c of all exemplary embodiments mentioned above by way of example is not limited to the mentioned insulating properties and is not only provided in the mentioned combinations. Rather, the insulating layers 106, 106a, b, c with different insulating properties and / or thicknesses can preferably be combined with one another as desired in order to enable optimal and simple adaptation of the protective element 100 to the respective requirements. For example, it is also conceivable for one or more insulating layers 106, 106a, b, c to be thermally insulating and, at the same time, mechanically stable and thus able to withstand mechanically acting forces.

[0279] In further (not shown) embodiments of protective elements 100, individual or multiple features and / or advantages of the aforementioned embodiments can be combined with one another as desired. For example, in the embodiment shown in Fig. 1, an insulating layer 106 and / or the support structure 104 can also be partially or completely provided with an insulating layer 106b formed as a coating according to the embodiment shown in Fig. 7.

[0280] List of reference symbols

[0281] protective element

[0282] device

[0283] Support structure

[0284] Insulating layer a Insulating layer b Insulating layer c Insulating layer a Connecting layer b Connecting layer c Connecting layer d Connecting layer

[0285] Outside of the wall Wall of the device Inside of the wall

Claims

Patent claims 1. A protective element (100) for arrangement on or in a device (102), in particular on or in an electrical energy storage device, wherein the protective element (100) comprises: a support structure (104); and at least one insulating layer (106, 106a, 106b, 106c); and at least one connecting layer (108a, 108b, 108c, 108d) for connecting the support structure (104) to the at least one insulating layer (106, 106a, 106b, 106c).

2. Protective element (100) according to claim 1, characterized in that the carrier structure (104) comprises one or more carrier layers, in particular one or more metal layers.

3. Protective element (100) according to claim 1 or 2, characterized in that the protective element (100) comprises a plurality of insulating layers (106, 106a, 106b, 106c), which are arranged in particular on both sides of the support structure (104).

4. Protective element (100) according to claim 3, characterized in that several of the insulating layers (106, 106a, 106b, 106c) differ from one another with regard to their mechanical properties and / or their insulating properties, in particular with regard to their thermal and / or electrical and / or electromagnetic insulating properties.

5. Protective element (100) according to one of claims 3 or 4, characterized in that between several of the insulating layers (106, 106a, 106b, 106c) exactly one connecting layer (108a, 108b, 108c, 108d) is arranged.

6. Protective element (100) according to one of the preceding claims, characterized in that at least one insulating layer (106, 106a, 106b, 106c) has a thickness in the range of 0.01 mm to 1 mm, in particular in the range of 0.05 mm and 0.8 mm, especially in the range of 0.2 mm to 0.6 mm.

7. Protective element (100) according to one of the preceding claims, characterized in that at least one insulating layer (106, 106a, 106b, 106c) has different thicknesses in some regions and / or a structured surface.

8. Protective element (100) according to one of the preceding claims, characterized in that at least one insulating layer (106, 106a, 106b, 106c) comprises a coating or an individual insulating layer, in particular is a coating or an individual insulating layer.

9. Protective element (100) according to one of the preceding claims, characterized in that the protective element (100) is arranged at least in regions on or in the device (102), in particular on an outer side (110) or an inner side (114) of a wall (112) of the device (102).

10. Protective element (100) according to one of the preceding claims, characterized in that at least one insulating layer (106, 106a, 106b, 106c) surrounds the support structure (104) partially or completely.

11. Protective element (100) according to one of the preceding claims, characterized in that the carrier structure (104) comprises or is formed from a metal, in particular stainless steel and / or aluminum.

12. Protective element (100) according to one of the preceding claims, characterized in that at least one insulating layer (106, 106a, 106b, 106c) comprises or is formed from a thermally insulating material, in particular silicate fibers and / or thermal insulating paper and / or glass fabric and / or ceramic fiber mats.

13. Protective element (100) according to one of the preceding claims, characterized in that at least one insulating layer (106, 106a, 106b, 106c) comprises or is formed from an electrically insulating material, in particular a plastic and / or a ceramic and / or a plastic film.

14. Protective element (100) according to one of the preceding claims, in particular according to claim 8, characterized in that the coating has a ceramic-based coating and / or a water-based coating and / or a glass-based coating and / or an epoxy-based coating and / or a powder coating.

15. Protective element (100) according to one of the preceding claims, characterized in that at least one connecting layer (108a, 108b, 108c, 108d) comprises or is formed from a binder, in particular a ceramic-based binder and / or a water-based binder and / or a glass-based binder and / or an epoxy-based binder.

16. Protective element (100) according to one of the preceding claims, characterized in that at least one connecting layer (108a, 108b, 108c, 108d) comprises or is formed from an adhesive, in particular an acrylate-based adhesive.

17. Device (102) with a protective element (100) according to one of the preceding claims.

18. Device (102) according to claim 17, characterized in that the device (102) is designed as a housing, a module cover, a battery cell, a component in the internal combustion engine environment or as an electrical energy storage device.

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