Carrier structure, cell contacting system and manufacturing method

Abstract

The present invention relates to a carrier structure that can be used for electrical contact of batteries, for example, in automobiles. A carrier structure (100, 400) for electrically insulating at least one first and second electrically conductive portion comprises an electrically insulating base body (102, 402) having a first retaining structure for retaining a first electrically conductive portion (104, 404) and a second retaining structure for retaining a second electrically conductive portion (106), and an electrically insulating spacer (110, 210, 410) embedded in the base body in at least a portion of a separation region (108) between the first and second electrically conductive portions, wherein the spacer (110, 210, 410) has an intumescent material and / or an inorganic high temperature-resistant filler.

Description

Technology Field

[0001] The present invention relates to carrier structures that can be used, for example, in contact systems of batteries in automobiles. The present invention also relates to a cell contact system having such carrier structures and a method for manufacturing them. Background Technology

[0002] Electrically conductive busbars supported on electrically insulated carrier structures are typically used for the electrical contacts of batteries. These carrier structures insulate these busbars from additional electrically conductive elements, such as other busbars and contacts, metal attachments and grounding lugs, and also electrically conductive grounding plates. When temperatures rise abnormally (e.g., in the presence of a short circuit), the electrically insulated region separating the busbars from other electrically conductive components is often found to be insufficiently stable and fails. Consequently, insufficient spacing between the busbars and other electrically conductive components can lead to further short circuits and even thermal runaway of the entire battery array. Due to limited installation space and high thermal loads in the event of a fault, increasing wall thickness is often not a viable solution. Furthermore, due to the demands in the event of a fault, relatively thick insulation made of most plastics would melt, as the melting points of conventional plastics range from 220°C to a maximum of 280°C. However, for safe electrical insulation in battery applications, stability up to, for example, 500°C must be guaranteed. The problem to be solved

[0003] Therefore, there is a need for carrier structures that can be manufactured cheaply and compactly, while ensuring safe and reliable insulation between electrically conductive parts even at high temperatures. means of solving the problem

[0004] These problems are resolved by the subject matter of the independent claims of this invention. Advantageous embodiments of the invention are the subject matter of the dependent claims.

[0005] In this case, the present invention is based on the idea of ​​providing an electrical insulating spacer having an intumescent material or an inorganic high temperature-resistant filler in at least part of the overlapping area between electrically conductive components. Depending on the installation space, a combination of an intumescent spacer and a filled insulating spacer is also possible.

[0006] If the electrical insulation spacer has a swellable material, it changes its volume when the temperature rises—otherwise the housing material would soften and insulation would fail—and thus maintains the same spacing between electrically conductive components or even expands it. Consequently, if a fault occurs, it can be ensured that no further short circuits occur. If the electrical insulation spacer is filled with a high-temperature resistant filler (e.g., glass, quartz, or ceramic material), it maintains dimensional stability even if a fault occurs and prevents electrically conductive components from coming too close to each other.

[0007] In particular, a carrier structure for electrically insulating at least one first and second electrically conductive part comprises an electrically insulating base body having a first retaining structure for retaining the electrically conductive part and a second retaining structure in contact with the second electrically conductive part, and an electrically insulating spacer embedded in the base body in at least a portion of the separation area between the first and second electrically conductive parts — the spacer has an expandable material and / or an inorganic high-temperature resistant filler —.

[0008] In this case, an expandable spacer, an insulating spacer filled with an inorganic high-temperature resistant material, or a combination of these spacers may be embedded in the base body in at least a part of the separation area between the first and second electrically conductive parts.

[0009] Expandable materials such as expandable graphite, anticatalytic melamines, or melamine phosphates are suitable as expandable materials.

[0010] Therefore, advantageously, without further increasing the wall thickness in the overlapping area between the first and second electrical insulation parts, it can be ensured that no additional short circuits occur in the event of strong heating, because the carrier material gives way. In the event of a fire, the expandable material expands but does not burn. Additionally, the expandable material has the advantage of closing air gaps that, if defective, could provide too low electrical insulation, and also suppressing flames due to a lack of oxygen.

[0011] According to an advantageous embodiment of the present invention, the swellable spacer has a cross-linked cyanoacrylate adhesive, which is filled with a swellable material. In this case, commercially available inexpensive adhesives may be used, which are injected into a carrier structure as a fluid precursor and subsequently cured by UV radiation, light, heat and / or ultrasound.

[0012] Another embodiment of the present invention provides a thermal and electrical insulating spacer, and this thermal and electrical insulating spacer absorbs a cross-linked cyanoacrylate adhesive to achieve sufficient high-temperature resistant insulation in an electrical insulating base body, for example, through the addition of an inorganic high-temperature resistant filler.

[0013] In the event that excessive heat generation occurs, to widen the gap between the first and second electrically conductive parts in a targeted manner in the overlapping area, the expandable spacer may have a piston element and a heat-resistant cylinder element that are at least partially expandable (also without the addition of acrylate adhesive), and the piston element expands inside the cylinder element under the action of heat. The cylinder element may have, for example, a ceramic material and preferably must not be electrically conductive. In this way, the expandable spacer functions as an actuator that moves the two electrically conductive parts apart from each other.

[0014] According to an advantageous improved embodiment of the present invention, the electrical insulating spacer has glass as a filler. Consequently, the electrical insulating spacer remains intact and, as long as it additionally contains an expandable material, remains in a dimensionally stable state in an expanded state. Glass grains or glass beads also form thermal and electrical insulators and prevent oxygen from reaching the combustible components of the expandable spacer, e.g., adhesive, thereby preventing or at least delaying its combustion. It will be clear to those skilled in the art that all other suitable inorganic electrical insulating and high-temperature resistant fillers, such as quartz or ceramic, may also be used.

[0015] In a particularly advantageous way, the electrical insulation spacer has hollow glass beads as a filler, and these hollow glass beads are filled with air, for example, thereby providing much better insulation.

[0016] For example, spacers can be embedded as lateral support elements in the grid structure of a carrier structure. In particular, spacers can be arranged laterally between two busbars of a battery contact system so that, in the event of overheating, the air gaps and creepage paths between the busbars are maintained and charged, or the carrier structure is mechanically stabilized.

[0017] Since the expandable material causes a relatively strong expansion of the spacer's volume, the expandable spacer occupying less than 50% of the overlapping area in the untriggered state may be sufficient for the safe separation of the first and second electrically conductive parts. Therefore, only a small amount of space and material is required for the spacer.

[0018] According to an advantageous improved embodiment of the present invention, the expandable spacer is formed in such a way that the gap between the first and second electrically conductive parts is expanded by the action of heat. Consequently, if necessary, it can be achieved that the deteriorating insulating properties of the housing material are compensated and, in each case, a short circuit between the first and second electrically conductive parts can be avoided.

[0019] However, generally, it may be sufficient to protect the necessary safety gap to prevent short circuits using electrical insulation spacers. In this case, the insulation spacer remains intact in terms of its electrical and thermal insulation functions even after strong thermal action.

[0020] According to an exemplary application environment, the first electrically conductive part is a voltage-conducting bar of the battery array. By means of a spacer according to the present invention, this bus bar is kept separated from grounded electrically conductive parts, such as, for example, a welding lug or a ground plate. Alternatively, separation from additional voltage-conducting bus bars may also be provided.

[0021] In particular, the present invention relates to a cell contact system for an automotive battery module, particularly an electric or hybrid vehicle, wherein the cell contact system comprises a carrier structure according to the present invention and, in each case, a first plurality of individually formed contact elements for contacting two adjacent battery cells of the automotive battery module, wherein the contact elements are arranged side by side in a first row and, in each case, are attached to one side of the carrier structure and further comprise a plurality of individually formed second contact elements, wherein the plurality of second contact elements are arranged side by side in a second row and are provided on the side of the carrier structure opposite to the first row, so that, in each case, contact elements for contacting two adjacent battery cells of the vehicle battery module are positioned on both sides of the carrier structure.

[0022] The present invention also relates to a method for manufacturing a carrier structure according to the present invention, wherein the method comprises the following steps:

[0023] Step of providing a carrier structure;

[0024] The method comprises the step of introducing an electrically insulating spacer into a recess of a carrier structure — said spacer has an expanding material and / or an inorganic high-temperature resistant filler —.

[0025] A particularly simple manufacturing process can be achieved by introducing an electrical insulation spacer as a fluid precursor and subsequently curing the fluid precursor of the electrical insulation spacer.

[0026] For example, the step of curing a fluid precursor includes the step of introducing ultrasonic energy. In this case, using ultrasound has the advantage that curing can be easily performed even in hard-to-reach locations, particularly those that cannot be reached by UV radiation or light. Additionally, since the fluid precursor exhibits thixotropic behavior, it is also possible to use ultrasonic energy for a short-term increase in fluidity during the processing process.

[0027] When the fluid precursor has an acrylate-based single-component adhesive, particularly well-established materials are used.

[0028] According to an advantageous improved embodiment of the present invention, an electrical insulating spacer may be provided to comprise an expanding material as an expanding material, wherein the expanding material is selected from the group comprising expanding graphite, melamine, or mixtures thereof, and / or the expanding spacer may also comprise a filler selected from the group comprising quartz particles, glass grains, glass beads, and hollow glass beads or mixtures thereof.

[0029] To better understand the present invention, the invention is described in more detail with the help of the embodiments illustrated in the following drawings. In this case, the same parts are denoted by the same reference numerals and the same component names. Additionally, some features or combinations of features from the different embodiments illustrated and described may also constitute solutions according to the present invention independently, progressively, or in themselves. Brief explanation of the drawing

[0030] FIG. 1 illustrates a schematic cross-sectional view of a carrier structure according to an exemplary first embodiment. FIG. 2 illustrates a schematic cross-sectional view of a carrier structure according to an exemplary second embodiment. Figure 3 illustrates the details of Figure 2. FIG. 4 illustrates a schematic detail of a carrier structure according to another exemplary embodiment. FIG. 5 illustrates a schematic perspective view of a carrier structure according to another exemplary embodiment. Figure 6 shows a plan view of the carrier structure of Figure 5. Figure 7 shows a schematic detailed view of the carrier plate of the cell contact system. Specific details for implementing the invention

[0031] Hereinafter, the present invention will be described in more detail with reference to the drawings, particularly with reference first to the schematic cross-sectional views of FIGS. 1 and FIGS. 2. It is noted that in all drawings, size ratios and in particular layer thickness ratios do not necessarily need to be reproduced in actual size. Furthermore, it will be obvious to those skilled in the art that the principles according to the present invention can be used not only in connection with battery cell contact systems, but also in other applications where electrically conductive parts insulated from one another by carrier structures must be reliably separated from one another in the event of overheating.

[0032] FIG. 1 illustrates a schematic cross-sectional view of a carrier structure (100) according to the present invention, which is part of a cell contact system.

[0033] Cell contact systems for lithium-ion batteries include cell connectors and cell holders in which the connectors are integrated into a rigid laser-welded layer structure. Alternatively, cell connectors can also be attached to lithium-ion cells by ultrasonic welding or electromagnetic pulse welding (EMPT welding). Thus, so-called "pouch cells" can also be used. Individual battery cells are connected to each other in series and in parallel via cell connectors. They manage current conduction, absorb cell forces, and, where appropriate, hold sensors. Additionally, the system typically includes a control interface with thermal and electrical monitoring functions.

[0034] As schematically illustrated in FIG. 1, the carrier structure (100) comprises a base body (102) made at least partially of an electrical insulating material, for example, plastic. A first electrically conductive portion (104) is formed, for example, by a voltage-conducting busbar or battery cell contact. A second electrically conductive portion (106) further comprises an electrically conductive welded tab (106A) and / or a ground plate (106B) that contacts the base body (102) over a larger area.

[0035] Two variations of the second electrically conductive part (106) are shown in FIG. 1, but of course, only one second electrically conductive part or more than two may also exist.

[0036] To electrically insulate the first electrically conductive part (104) and the second electrically conductive part (106) from each other, the base body (102) has separation regions (108) arranged in an overlapping area between the first electrically conductive part (104) and the second electrically conductive part (106). However, experimental investigations regarding fire performance indicated that the existing separation regions (108) do not remain stable enough to safely prevent an electrical short circuit between the first and second electrically conductive parts at temperatures exceeding 500°C. The plastic of the separation regions (108) often burns significantly or softens, causing a short circuit.

[0037] To solve these problems, the present invention provides additional electrical insulation spacers (110) in the overlapping regions between the first electrically conductive portion (104) and the second electrically conductive portion (106) in each case. According to the present invention, the spacers (110A, 110B) comprise a high-temperature resistant insulating material or an expandable material, or alternatively, a combination of a high-temperature resistant inorganic material and an expandable material that is maintained in an electrically insulated state and mechanically stable state or expands under the action of heat. Glassy or ceramic fillers having physical heat resistance and electrical insulation effects are suitable as high-temperature resistant inorganic insulating materials. Expandable graphite and melamine (2,4,6-triamino-1,3,5-triazine) and their derivatives are suitable, for example, as expandable fillers. As is generally known, expandable materials are understood to be materials that are foamed from organic and / or inorganic materials to form flame-retardant, heat-resistant, and electrically insulating foams when exposed to flames, for example.

[0038] According to the present invention, an acrylate adhesive mixed with an inorganic insulating and / or swelling material is used as a base material. Vitralit from Panacol-Elosol GmbH ®A commercially available one-component solvent-free isocyanate acrylate adhesive, such as that available under DU 8050, has been proven to be a particularly cost-effective embodiment. Such adhesives cure over a long period under UV irradiation or under the influence of moisture.

[0039] To achieve a more improved separation between the first electrically conductive portion (104) and the second electrically conductive portion (106), the cyanoacrylate adhesive may be provided to be mixed with spherical glass particles, particularly gas-filled or vacuum-filled hollow glass beads. For example, the mass may comprise 60 to 90 volume % of glass beads.

[0040] In the event of a fire, the glass beads form an insulating layer and prevent oxygen from reaching the adhesive contained within. In this way, it is possible to achieve that the array meets the test provided for approval by the People's Republic of China, which requires it to maintain safe operation for, for example, 15 minutes at 500°C.

[0041] With reference to FIGS. 2 and FIGS. 3, another advantageous embodiment of the present invention will now be described in detail.

[0042] The carrier structure (100) of FIG. 2 differs from the array shown in FIG. 1 by means of a differently configured expandable spacer (210). According to this alternative embodiment, the expandable spacer (210) has an actuator function, so not only is the distance required in case of fire maintained, but the gap between the first electrically conductive part (104) and the second electrically conductive part (106A) is further expanded.

[0043] As can be seen in detail in FIG. 3, the spacer (210) has a reciprocating piston-type structure. On the base body (102) of the carrier structure (100), a cylinder element (112) on which a piston element (114) is positioned is arranged. The piston element (114) is supported on the separation area (108A) of the base body (102), and may itself be expandable or insulating. In the event of overheating, this expands and pushes the separation area (108A) in the direction of the arrow (118), so that the gap between the first electrically conductive part (104) and the second electrically conductive part (106A) increases in size.

[0044] Alternatively, the piston element itself does not need to be expandable, but rather may be placed on an expandable material arranged in the bottom region (116) of the cylinder element (112). In this case, when overheating occurs, the expandable material in the region (116) pushes the piston element (114) in the direction of the arrow (118). Consequently, the gap between the first electrically conductive part (104) and the second electrically conductive part (106A) increases in size accordingly, so that a short circuit between the first electrically conductive part (104) and the second electrically conductive part (106A) can be avoided.

[0045] FIG. 4 illustrates a detailed view of another advantageous configuration of a carrier structure (400) according to the present invention. The base body (402) of the carrier structure (400) has a bottom element (420) and a cover element (422). A first electrically conductive portion (404), in particular, where a battery contact is seated, is provided on the bottom element (420). The cover element (422) has a receptacle (424) into which a welding lug, not shown in this figure, is introduced as a second electrically conductive portion. During normal operation, the welding lug and the battery contact (404) are electrically insulated from each other through a separation area (408).

[0046] In order to ensure that the welding lug cannot dangerously access the battery contact (404) even in the event of overheating and fire, according to the present invention, an insulating spacer (410A) is arranged between the bottom element (420) and the cover element (422) in such a way that when pressure is applied to the insulating spacer (410A), the separation area (408) holds the welding lug in its position. Here, the direction of the arrow (418) indicates the direction of active force through the welding lug. In this case, the insulating spacer (410) shown in FIG. 4 may also be made of a ceramic material.

[0047] As in the embodiments described above, an acrylate adhesive mixed with an expandable material is used as the base material for the expandable spacer (410A). Vitralit from Panacol-Elosol GmbH ® A commercially available one-component solvent-free isocyanate acrylate adhesive, such as the one available as DU 8050, has proven to be a particularly cost-effective embodiment.

[0048] To achieve a more improved separation between the first electrically conductive part (104) and the second electrically conductive part (106), the cyanoacrylate adhesive may be provided to be mixed with spherical glass particles, particularly gas-filled or vacuum-filled hollow glass beads.

[0049] (Similar to the arrays of FIG. 1 and 2) In this embodiment as well, an additional insulating or swellable spacer (410B) may be provided between the battery contact (404) and a second electrically conductive part not shown herein that is supported against the bottom element (420). The insulating or swellable spacer (410B) is received in a recess of the bottom element (420) and, in the event of a fire, stabilizes the distance between the battery contact and the second electrically conductive part, e.g., a ground plate.

[0050] The insulating or expandable spacer (410B) is also preferably made of cyanoacrylate adhesive, which is filled with a glassy or expandable material such as expandable graphite or melamine or a combination of both.

[0051] The use of cyanoacrylate adhesive as a base material for expandable spacers also has the advantage that, in principle, it has very good adhesion to the plastic material of the carrier structure, and particularly good vibration resistance can be achieved.

[0052] A second embodiment of the base body (402) as a bottom element (420) and a cover element (422) has the advantage that the cyanoacrylate adhesive is accessible for UV curing before the array is fully mounted.

[0053] The manufacture of the carrier structure (100, 400) according to the present invention will be discussed in more detail later with reference to the drawings described above. In the first step, the base body (102, 402) is initially manufactured from plastic, for example, as an injection-molded part. As shown in FIGS. 4 and 5, the base body is advantageously formed into two parts as a bottom element (420) and a cover element (422).

[0054] Before the bottom element (420) and the cover element (422) are joined together, a fluid precursor of the insulating or expanding spacer (110, 410) is introduced into the corresponding recesses, and, for example, the material is injected through an injection nozzle. However, problems of insufficient fluidity may occur when doing this, particularly when using a glass bead-filled cyanoacrylate adhesive. To increase fluidity in the injection nozzle area, the thixotropy of the cyanoacrylate adhesive can be utilized by applying ultrasonic energy at this location.

[0055] The material injected into the recesses is subsequently cured by UV radiation or ultrasonic energy.

[0056] Only after that are the electrically conductive parts installed, and the entire array assembled.

[0057] FIG. 6 illustrates a schematic plan view of the bottom element (420) of FIG. 5. An electrical insulation spacer (410B) is held in the corresponding flat receptacle (424) of the bottom element (420). In the above description, a method was described in which the electrical insulation spacer (410B) is introduced into the receptacle (424) in the form of a fluid precursor and subsequently cured, but the spacer (410B) can also be inserted into the receptacle (424), for example, as a prefabricated part and held by a press-fit.

[0058] FIG. 7 illustrates details of a cell contact system (700) for an automobile battery as another possible application of an electrical insulation spacer according to the present invention. The cell contact system (700) has an electrical insulation base body configured as a frame (702). A first electrically conductive portion (704) and a second electrically conductive portion (706), for example, two busbars, are mounted on this frame side by side in a single plane. According to the present invention, an electrical insulation spacer (710) is provided laterally to prevent short circuits from forming between the first electrically conductive portion (704) and the second electrically conductive portion (706) in the event of overheating. According to the present invention, the electrical insulation spacer (710) is provided with an expandable material and / or an inorganic high heat-resistant material.

[0059] In this way, in the event of overheating, the separation area (708) can be reliably supported and the necessary electrical insulation is maintained. In particular, in the case of an swollen filler, the air gaps and creepage paths between the busbars are maintained and filled. Explanation of the symbols

[0060] 100, 400 carrier structures 102, 402 Base Main Body 104, 404, 704 First electrically conductive part 106, 406, 706 Second electrically conductive part 108, 408, 708 separated regions 110, 210 spacers 112 cylinder element 114 Piston Element 116 Bottom area of ​​cylinder element 118 Directional arrow 420 floor elements 422 Cover Elements 424 Receptacles 700-cell contact system 702 frames

Claims

Claim 1 As a carrier structure for electrically insulating at least one first electrically conductive part (104, 404) and at least one second electrically conductive part (106), the carrier structure (100, 400) comprises: an electrically insulating base body (102, 402) having a first holding structure for holding the first electrically conductive part (104, 404) and a second holding structure for holding the second electrically conductive part (106); A carrier structure for electrically insulating at least one first and second electrically conductive part, comprising an electrically insulating spacer (110, 210, 410) embedded in the base body in at least a portion of the separation region (108) between the first and second electrically conductive parts, wherein the electrically insulating spacer (110, 210, 410) has an intumescent material and / or an inorganic high temperature-resistant filler, wherein the first electrically conductive part (104, 404) is a voltage-conducting bar of a battery array, and / or the second electrically conductive part (106) is a welding lug or a grounding plate. Claim 2 In claim 1, the electrical insulating spacer (110, 210, 410) is a carrier structure for electrically insulating at least one first and second electrically conductive portion having a cross-linked cyanoacrylate adhesive. Claim 3 In claim 1, the electrical insulating spacer (110, 210, 410) has at least a partially expandable piston element (114) and a heat-resistant cylinder element (116), and the piston element expands inside the cylinder element under the action of heat, a carrier structure for electrically insulating at least one first and second electrically conductive portion. Claim 4 In claim 1, the electrical insulating spacer (110, 210, 410) is a carrier structure for electrically insulating at least one first and second electrically conductive portion, having glass, quartz and / or ceramic as the inorganic high-temperature resistant filler. Claim 5 In claim 4, the electrical insulating spacer (110, 210, 410) is a carrier structure for electrically insulating at least one first and second electrically conductive portion having hollow glass beads as the filler. Claim 6 In claim 1, the electric insulating spacer (110, 210, 410) is embedded as a lateral support element in the grid structure of the carrier structure, and is a carrier structure for electrically insulating at least one first and second electric conductive part. Claim 7 In claim 1, the electric insulating spacer is a carrier structure for electrically insulating at least one first and second electrically conductive portion, which occupies less than 50% of the separation area (108, 408). Claim 8 In claim 1, the electric insulating spacer (110, 210, 410) is a carrier structure for electrically insulating at least one first and second electric conductive part, formed in such a way that the gap between the first and second electric conductive parts is widened by the action of heat. Claim 9 delete Claim 10 As a carrier structure for electrically insulating at least one first electrically conductive part (104, 404) and at least one second electrically conductive part (106), the carrier structure (100, 400) comprises an electrically insulating base body (102, 402) having a first holding structure for holding the first electrically conductive part (104, 404) and a second holding structure for holding the second electrically conductive part (106); A carrier structure for electrically insulating at least one first and second electrically conductive part, comprising an electrical insulating spacer (110, 210, 410) embedded in the base body in at least a portion of the separation region (108) between the first and second electrically conductive parts, wherein the electrical insulating spacer (110, 210, 410) has an expandable material and / or an inorganic high-temperature resistant filler, and the electrical insulating spacer (110, 210, 410) has at least a partially expandable piston element (114) and a heat-resistant cylinder element (116), wherein the piston element expands inside the cylinder element under the action of heat. Claim 11 A cell contact system for an automobile battery module, wherein the cell contact system comprises a carrier structure (100, 400) according to any one of claims 1 to 8 and 10, and, in each case, a first plurality of individually formed contact elements for contacting two adjacent battery cells of the automobile battery module, wherein the contact elements are arranged side by side in a first row and, in each case, are attached to one side of the carrier structure, and further comprises a plurality of individually formed second contact elements, wherein the plurality of second contact elements are arranged side by side in a second row and are provided on the side of the carrier structure opposite to the first row, so that, in each case, contact elements for contacting two adjacent battery cells of the automobile battery module are positioned on both sides of the carrier structure. Claim 12 A method for manufacturing a carrier structure according to any one of claims 1 to 8 and 10, the method comprising: providing a base body (102, 402) of the carrier structure (100, 400); and introducing at least one electrical insulating spacer (110, 210, 410) into a recess of the carrier structure — the electrical insulating spacer (110, 210, 410) has an expanding material and / or an inorganic high-temperature resistant filler — a method for manufacturing a carrier structure. Claim 13 A method for manufacturing a carrier structure, wherein, in claim 12, the electric insulating spacer (110, 210, 410) is introduced as a fluid precursor, and subsequently the fluid precursor of the electric insulating spacer is cured. Claim 14 A method for manufacturing a carrier structure according to claim 13, wherein the step of curing the fluid precursor comprises the step of introducing UV radiation or ultrasonic energy. Claim 15 A method for manufacturing a carrier structure, wherein the fluid precursor is an acrylate-based single-component adhesive, in accordance with claim 13. Claim 16 A method for manufacturing a carrier structure according to claim 14, wherein the electrical insulating spacer (110, 210, 410) comprises an expansion substance selected from the group comprising expandable graphite, melamine, or mixtures thereof, and / or the electrical insulating spacer further comprises a filler selected from the group comprising quartz, glass grains, glass beads, and hollow glass beads, or mixtures thereof.

Images