EP4208922A1

EP4208922A1 - Bushing

Info

Publication number: EP4208922A1
Application number: EP21773008.4A
Authority: EP
Inventors: Helmut Hartl
Original assignee: Schott AG
Current assignee: Schott AG
Priority date: 2020-09-02
Filing date: 2021-09-01
Publication date: 2023-07-12
Also published as: KR20230058155A; DE102020122910A1; JP2023543391A; WO2022049095A1; US20230208073A1; CN116114123A

Abstract

The invention relates to an electrical bushing comprising a bushing component having an opening and at least one conductor vitrified in the opening of the bushing component in a glass or glass ceramic material. The electrical bushing is characterised in that at least one guide component connected to the bushing component is provided, the guide component having a plastic as material.

Description

execution

The invention relates to an electrical bushing comprising a bushing component with an opening, at least one conductor glazed into the opening of the bushing component and at least one guide component connected to the bushing component.

Feedthroughs for electrical conductors with a conductor glazed in a glass or glass-ceramic material have become known from a large number of applications. In this regard, reference is made to WO 2012/110246 A1 or DE10 2018 220 118 A1, for example. All of the documents mentioned above relate to bushings that are introduced into a housing for storage devices, in particular battery housings. The bushings include conductors with which high currents are discharged into the storage devices or out of the storage device, in particular from the accumulators.

Accumulators, preferably for lithium-ion batteries or nickel-metal hydride batteries, can be used in various areas, for example for portable electronic devices, mobile phones, power tools or electric vehicles.

Batteries can be either disposable, which is disposed of and/or recycled after discharge, or an accumulator.

While bushings in the prior art were always battery applications, none of the aforementioned applications revealed how an electrical bushing must be designed in order to be able to be connected to a battery management system on the one hand and to a storage device, in particular a battery, on the other. Although WO 2012/110246 A1 describes the passage of a conductor, which is routed through a glass material and is connected to an electrode connecting component, the electrode connecting component is firmly connected to the conductor, for example by a welded or soldered connection. Such a connection is very complex and has the disadvantage that it cannot be detached. In addition, the lines according to WO 2012/110246 A1 are supply lines carrying high currents to and from the battery cell. The invention, on the other hand, is aimed at routing control lines.

US 2019/0 131 591 A1 shows a bushing with a glass-enclosed conductor and an insulating element made of plastic, through which the conductor is passed. However, the insulating element is only used for insulation and not for guidance. In particular, the insulating element is not used to ensure that a plug can be pushed onto a conductor that is glazed in a glass or glass-ceramic material. Nothing is said about this in US 2019/0 131 591 A1.

Furthermore, US 2019/0 131 591 A1 also describes a battery and thus a storage device, but US 2019/0 131 591 A1 does not disclose a partition separating a first and second area from one another. In particular, US 2019/0 131 591 A1 does not describe that the first area is a wet area and the second area is a dry area.

In addition to US 2019/0 131 591 A1, US 2014/0 030 902 A1 also shows a feedthrough. As in US 2019/ 0 131 591 A1, the plastic part is only used as an insulator. A guide component, which serves to ensure that a plug is pushed onto the at least one conductor encased in a glass or glass-ceramic material, is also in US 2014/0 030 902 A1 not shown.

DE 10 2009 014 334 B4 also shows a bushing with a tubular element that serves to direct a conductor towards a socket to lead. It is not explicitly described in DE 10 2009 014 334 B4 that the tubular component consists of a plastic material. Furthermore, it is not clear from DE 102009 014 334 B4 that the insulating body in which the conductor is embedded consists of a glass or glass-ceramic material and the conductor is therefore encased in glass.

The object of the invention is to overcome the disadvantages of the prior art and, in particular, to specify a bushing that can be easily and, if necessary, reversibly connected to lines via plug connections.

Furthermore, a storage device is to be specified which can be cooled better than hitherto.

According to the invention, the first object is achieved by an electrical feedthrough according to claim 1. The second, further object is achieved by a memory device or memory system according to claim 11 or 16. Developments of the invention are the subject matter of the dependent claims.

The electrical bushing according to the invention comprises a guide component which is connected to the bushing component. This measure makes it possible to produce a bushing in which a plug can be pushed with a precise fit onto the at least one conductor of the bushing component, which is encased in a glass or glass-ceramic material. According to the invention, it is provided that the guide component consists of a plastic material, which is connected to the lead-through component, preferably made of a metallic material. The configuration of the guide component from a plastic material, in particular a duroplastic plastic material, is advantageous since the complex geometry of the guide component can only be produced with great difficulty and with great effort, in particular machining effort, from the same material as the lead-through component, which is preferably made of metal. The use of a thermoplastic material instead of a duroplastic is also particularly preferred, since the guide component with its complex geometry can then be produced simply by means of an injection molding process. In addition, thermoplastic materials can be melted down by heating and recycled. The original material properties are retained.

In general, the guide component made of plastic can be obtained very easily in the injection molding process.

In order to securely connect the guide component to the lead-through component made of metal, it is provided that the guide component is designed in such a way that it can be captively connected to the lead-through component.

A captive connection is made available in a preferred embodiment, for example, in that the lead-through component includes at least one undercut for connection to the guide component. The plastic of the guide component can be injected into the undercut using an injection molding process for the guide component. Since the coefficient of expansion of the plastic material is higher than that of the metal, the plastic can dig into the undercut of the metal bushing material, so that the plastic and thus the guide component are captively connected to the bushing component.

It is particularly advantageous if the undercut has a conical profile in the direction of the lead-through component. The conical shape guarantees that the plastic grips the undercut even better, so that the plastic and the metal lead-through component are very firmly connected. In particular, such a design provides a play-free, robust connection. The robust connection is also characterized by a high resistance to vibration and acceleration forces. With the captive connection of Guide component and lead-through component is a fixed, ie non-detachable connection between two components made of different materials, the metal of the base body and the plastic of the guide component.

The guide component is in particular designed in such a way that it can accommodate at least one plug which is connected to the at least one conductor. In the guide component, the plug can be slid onto the at least one conductor which is glazed in the lead-through component. A large number of conductors, for example six conductors lying next to one another, are preferably glazed into the glass or glass-ceramic material. The plug then also includes a large number of receptacles, for example a total of six receptacles, which can be plugged onto the total of six conductors. The number of glazed conductors is not limited; in principle, multiple glazing of an unlimited number of conductors is conceivable. In these cases it is a matter of multiple implementations.

In a particular embodiment, the plug is designed in such a way that it can be captively connected to the guide component. For this purpose, in a first embodiment of the invention, it is provided that the guide component has a recess and the plug has at least one latching lug that can engage in the recess. In contrast to the captive connection of the guide component and bushing component, which is permanent, i.e. not detachable, the captive connection of plug and guide component is not permanent, i.e. a detachable connection by pushing the latching lug out of the recess.

In a particularly preferred embodiment, the conductor is a two-sided conductor, i.e. a conductor which, after being glazed into the opening of the lead-through component, can be provided with a plug from two sides.

If the conductor is not designed in one piece, the conductor can consist of a total of three parts: a first end section, preferably with a rectangular cross section, a middle section, preferably with a round cross-section and a second end section, preferably with a rectangular cross-section. Then it is possible that the round middle section of the conductor can be glazed in well, while the first end section and the second end section with a rectangular cross section can be connected to a plug in a contact-reliable manner. The different sections can also comprise different materials.

As an alternative to a three-piece ladder, a one-piece ladder can also be made available. Even in the case of a one-piece conductor, the end sections, preferably the first and second end sections, are designed with a rectangular cross section. The continuous conductor with a rectangular cross section, in particular the continuous 4-edged pin, can also be glazed, preferably glazed in a pressure-tight manner. The continuous 4-point pin in its one-piece embodiment is usually made of one and the same material, i.e. the end sections comprise the same material as the encapsulated middle section, for example copper or NiFe.

On the other hand, in the case of a multi-part pin, for example a three-part pin, the different sections can comprise different materials, for example copper for the end sections with a rectangular cross-section and NiFe for the round central section which is glass-enclosed. The end sections made of copper, which are connected to a plug, are characterized by high conductivity, while the central section made of NiFe is characterized by good vitrification, especially in the case of pressure glazing.

Another advantage of the non-one-piece embodiment is that a first end section, second end section and middle section can each be produced individually and only after the production of the individual parts, the first end section, the middle section and the second end section are connected to one another as individual parts, in particular soldered and/or welded. The individual sections are preferably produced from a drawn or rolled profile wire. In particular, it is possible that, for example, the first and the second end portion have a rectangular cross section and the Center section, in contrast, has a round cross-section. Due to the symmetry, the round cross-section can be glazed particularly well. Another advantage of the different sections being connected to form a conductor is that different materials can be used for the different sections. It is thus possible to form the end sections, which are connected to the receptacles of the plug, from copper with good flow conductivity and the middle section, which is glazed, from NiFe. The configuration of at least the end sections with a square cross-section has the advantage that it can be connected particularly well to a plug. In addition to the square cross-section, for example of the end sections of the pin, other polygonal cross-sections are also conceivable, for example a hexagonal or octagonal cross-section.

The electrical bushing according to the invention is preferably used in a dividing wall which separates a moist area, in particular a liquid-carrying area, from a dry area. Separating a wet area from a dry area is beneficial, but by no means mandatory. The moist area preferably includes a liquid cooling medium, for example water or oil, in particular liquids for immersion cooling. With immersion cooling, an electrical component, for example a storage device, is immersed in a dielectric liquid that is thermally conductive for cooling. Fluids for immersion cooling can be fluoropolymers, synthetic esters, or hydrocarbon/oil blends. Components of the controller that do not require liquid cooling and/or immersion cooling are preferably arranged in the dry area, which is separated from the moist area by the partition wall. It is also possible to provide parts of the control electronics with immersion cooling. As an alternative to this, it is conceivable that the moist area is filled with an electrolyte. In this case, the moist area forms, for example, a storage cell of a battery or a capacitor. Arrangements are therefore conceivable in which two moist areas are separated from one another. This is the case, for example, when two areas with liquids for immersion cooling have to be separated by a partition. In addition to storage devices, parts of the control electronics can also be arranged in the immersion-cooled areas. It is also possible that the liquids introduced into one of the two areas or both areas are electrolytes, for example of a storage device.

Although the separation of two areas is described here, more than two areas can also be separated from one another by means of partition walls, for example four or more areas. If such dividing walls are used in systems with storage devices, the dividing wall makes it possible in a first embodiment for a liquid-carrying area and a dry area to be separated from one another. The liquid-carrying area enables cooling of the storage device, in particular the battery, for example with a liquid such as water or oil, in particular also immersion cooling. As a result, the longevity of the memory device can be increased. Furthermore, with the cooling it is possible that the storage devices can be charged faster with higher currents.

Liquid cooling, e.g. immersion cooling, is preferably arranged for the storage device on one side of the partition, and the control device for controlling the storage device, e.g. the battery, is arranged on the other side, e.g. in a dry area. The dividing wall preferably comprises an opening into which the lead-through component of the lead-through is preferably inserted tightly with an O-ring.

In addition to the bushing, the invention also provides a conductor for a bushing, preferably a battery bushing.

The conductor according to the invention is characterized in that the conductor has a first end section, preferably with a rectangular cross section, and a middle section, preferably with a round cross section. In a In a further developed embodiment, the conductor can also comprise a second end section, preferably with a rectangular cross section.

It is particularly preferred if the first end section and the middle section are individual parts which are connected to one another to form a conductor, in particular electrically connected, in particular soldered and/or welded. A one-piece embodiment with rectangular end sections is also possible. In the case of multi-part ladders, the individual sections can comprise different materials. In a one-piece embodiment, the material of the end sections is identical to the material of the middle section. Furthermore, in the case of a one-piece conductor, the cross-section of the middle section is preferably the same as that of the end section. For example, if the end sections have a square cross-section, then in the case of a one-piece conductor, the middle section preferably also has a square cross-section.

It is generally the case that the material of the end sections of the conductor is selected in such a way that it is matched to the contact requirements of a plug-in connection, for example. Here the material can be selected so that the contact or transition resistance is low and there is high conductivity. Copper, for example, is particularly preferred for high conductivity. The material of the middle section of the conductor is preferably matched to the glass material and the type of glazing. The glazing can be both a pressure glazing and a glazing for an adapted implementation. Particularly preferred materials for the center section are NiFe for pressure glazing. Kovar can also be used in the middle section. Whether there is pressure glazing or an adapted bushing is determined by the expansion coefficients of the conductor, material and base body or the housing in which the glazing is made. With an adapted implementation, the coefficients of expansion of the conductor, glass material and base body are approximately the same or largely match Compression pressure is exerted on the glass and conductor by, for example, the body. In the case of pressure glazing, the thermal expansion coefficient of the glass material is lower than that of the base body or housing material, so that pressure can be built up on the glass material by the housing material or base body. The multi-divided conductor provides a conductor that is optimally adapted to the glazing and to the plug contacts.

Even in the case of a one-piece conductor with rectangular end sections, it is possible to enclose the conductor with a rectangular cross-section, the so-called continuous 4-edged pin, in a pressure-tight manner. In the case of a one-piece conductor, the cross-section of the end sections is preferably identical to the cross-section of the central section which is glazed.

The material of the first and second end sections and of the middle section or of the one-piece conductor is preferably one or more of the following materials:

Cu, a Cu alloy, NiFe, a NiFe alloy (also Ti or a titanium alloy, aluminium, gold, steel or stainless steel, iron, brass, bronze or Kovar are possible materials. Ti or titanium alloys as materials for the conductor are particularly suitable for medical applications of interest.

In a particularly preferred embodiment, NiFe or an NiFe alloy is provided as the material for the middle section and Cu or a Cu alloy is provided for the first end section and/or the second end section. Such an embodiment of a conductor has high conductivity in the area of the plug-in connection and allows pressure encapsulation.

In addition to the feedthrough, in particular the electrical feedthrough, the invention also provides a storage device with improved cooling. The improved cooling is achieved in that areas with Storage devices, for example, are provided with immersion cooling. Different areas are separated from each other by a partition.

The invention is to be described below with reference to the drawings without being restricted thereto.

Show it:

Fig. 1: a section through an inventive electric

Execution.

FIG. 2: a front view of an electrical bushing according to FIG. 1 .

Fig. 3: two glass-enclosed conductors of the bushing next to one another.

Fig. 4: a three-part conductor used in a bushing according to

Invention.

Fig. 5: Embodiment of the invention with two areas, a dry and a wet area.

Fig. 6: Embodiment of the invention with two areas, a first and a second wet area.

1 shows a sectional view of an electrical feedthrough 1 according to the invention, which can preferably be introduced into a partition wall (not shown). The partition wall is part of a system with a storage device, the storage device being cooled, for example, with liquid, eg water or oil or a liquid for immersion cooling, so that the partition wall separates a dry area from a wet area. The electrical feedthrough according to the invention thus provides an electrical connection between the dry area and the wet area. the Electrical bushing 1 according to the invention comprises, as shown in FIG. 1, a bushing component 3 with an opening or openings 5 made in the bushing component 3. In the present embodiment, several conductors are in the opening or openings 5 of the bushing component 3, in total in this Embodiment six conductors, glazed in a glass or glass ceramic material 9.1, 9.2. In the sectional view in Fig. 1, two adjacent conductors 7.1 and 7.2 are shown. The glass or glass-ceramic material introduced into the opening or openings 5 is marked with 9.1 and 9.2. The glass or glass-ceramic material 9.1, 9.2 is placed between the conductors 7.1, 7.2 and the walls of the opening or openings 5. In one embodiment of the invention, the coefficient of expansion of the glass or glass-ceramic material can be chosen to be lower than the coefficient of expansion of the material of the lead-through component 3 . In such a case, a pressure encapsulation, ie a hermetically sealed feedthrough, is made possible by the feedthrough component 3 . Hermetically sealed means that at a pressure difference of ¹ bar the helium leak rate is less than 1.8 mbar l/ ^s'1 , preferably less than ^1-10'9 mbar l/ ^s'1 . As an alternative to pressure glazing, glazing in which the coefficients of expansion of the glass and the surrounding metal do not differ or differ only slightly would also be possible. In such a case, an adapted implementation is available. Pressure encapsulation is preferred, however, since this provides a tight, in particular a hermetically tight, feedthrough as defined above. The material of the lead-through component and/or the conductor is a metallic material, in particular steel, stainless steel, high-grade steel or tool steel or a light metal such as aluminum. Stainless steel, in particular micro-alloyed steels, are particularly preferred as the material for the housing. For example, the conductors may comprise NiFe. The coefficient of expansion of the metallic material is in the range of 10-W ⁶ 1/K to 25-1 0' ⁶ 1/K, preferably 10-10' ⁶ 1/K to 16 W ⁶ 1/K Embodiment has an expansion coefficient lower than that of the lead-through component in order to provide pressure encapsulation. The coefficient of expansion of the glass material is preferably in the range of 8-10' ⁶ 1/K to 20 W ⁶ 1/K, preferably 8 10' ⁶ 1/K to 16 W ⁶ 1/K. Due to the greater coefficient of expansion of the surrounding metal compared to the glass or glass-ceramic material, the metal builds up pressure on the glass or glass-ceramic material and a hermetically sealed feedthrough is made available. The material of the conductor 7.1, 7.2 can be the same as the material of the base body or can include a different metal such as copper, a copper alloy CoSiC or, in particular, an NiFe alloy. The expansion coefficient of the metal pin is in the range of 8-10' ⁶ 1/K to 16-10' ⁶ 1/K, preferably between 8-10' ⁶ 1/K and 12-W ⁶ 1/K. Because of the coefficient of expansion, NiFe or an NiFe alloy is particularly preferred as the material for the conductors 7.1, 7.2. The expansion coefficient of NiFe or an NiFe alloy is approximately 9-10' ⁶ 1/K, whereas the metallic material has an expansion coefficient of approximately 13-10' ⁶ 1/K, so that there is sufficient prestress for a hermetically sealed feedthrough can be built. As previously mentioned, instead of pressure glazing, an adapted implementation would also be conceivable, in which the coefficient of expansion of conductor, base body or housing and glass or glass-ceramic material is approximately the same.

According to the invention, it is provided that the electrical feedthrough comprises at least one guide component 10.1, 10.2, which according to the invention consists of a plastic material, for example a duroplastic or also a thermoplastic plastic. The guide component 10.1, 10.2 serves to push the plug 12, which is only shown for the guide component 10.2, onto the conductors 7.1, 7.2 of the bushing. The material for the guide components 10.1, 10.2 is not metal, but a plastic, which can be obtained very easily by an injection molding process and is therefore above all inexpensive to produce in contrast to a metallic component that causes high manufacturing complexity and high costs.

It is particularly preferred if the guide component 10.1, 10.2 is captively connected to the metallic lead-through component 3. captive In the present case, connection means that the lead-through component and the guide component are not detachably connected to one another. A particularly captive connection, in particular a firm connection, between the plastic part and the metal lead-through component 3 is achieved if the metal part has an undercut 20.1, 20.2. A plastic material, for example, is injected into the cavity with the undercut 20.1, 20.2, resulting in the guide component 10.1, 10.2. For this purpose, for example, the injection molding tool is introduced into the cavity with the undercut 20.1, 20.2. A plastic guide component is produced by injection molding, into which a plug can be captively inserted. The plastic material then digs into the undercut 20.1, 20.2 and has a tight fit due to the fact that the plastic part has a higher thermal expansion coefficient a than the metal is designed to run. The plug 12, which is pushed onto the two conductors 7.1, 7.2 in the area of the guide 10.2, is held captively in a cutout or opening 22 of the guide component with the aid of a projection or latch 14 of the plug. However, in contrast to the captive connection of lead-through component and guide component, in the case of the plug being inserted into the guide component, captive is not understood to be a fixed connection, but rather a detachable connection. Thus, by pressing down the projection or latch 14, the plug can be detached from the guide component 10.1, 10.2. As can be seen from FIG. 1, the individual conductors 7.1, 7.2 are designed in such a way that they can be glazed in the middle of the glass or glass-ceramic material 9.1, 9.2. In such a case, the conductor projects out of the opening in the bushing component on both sides and can be connected on both sides of the opening in the bushing. The lead-through component 3 has a circumferential groove 30 . The circumferential groove 30 serves to ensure that the lead-through component can be tightly inserted together with the guide component in a partition wall that includes an opening. An O-ring is placed in the groove 30 for this purpose. The partition wall in which the lead-through component of the lead-through is inserted preferably separates a wet or damp area, in particular from a dry area in which, for example, a control unit can be accommodated.

2 shows a front view of the electrical bushing according to the invention. The lead-through component 3 with the total of six glazed conductors 7.1, 7.2, 7.3, 7.4, 7.5, 7.6 protruding from the lead-through component 3 can be clearly seen. In the embodiment shown, the multiple glazed conductors are each individually glazed in an opening, i.e. the feedthrough component 3 or the base body 3 has a total of six openings, in each of which a conductor 7.1, 7.2, 7.3, 7.4, 7.5, 7.6 is glazed. Instead of many individual openings in the base body, in each of which a conductor is glazed, it would also be possible to provide a single opening in the base body, with several conductors, for example all six conductors, being glazed together in this single opening. Furthermore, the lead-through component 3, which preferably consists of a metallic material, comprises an opening 50 into which a screw can be inserted and tightened in order to attach the lead-through component 3 to the partition wall in a captive manner.

FIG. 3 shows in detail the encapsulation of a conductor which has contact elements on both sides of the lead-through component 3 . The conductor 7.1, 7.2 is glazed in a glass material 9.1, 9.2 in the lead-through component 3 made of a metal. Only one wall of the lead-through component 3 is shown, in the opening or openings of which the conductor is glazed.

According to a further aspect of the invention, a conductor obtained by connecting individual parts is provided. In the case of the conductor shown in FIG. 4, the conductor 7.1, 7.2 comprises a total of three individual parts. This is shown in detail in FIG. 4 for the conductor 7.1. In the present case, the conductor 7.1 comprises three sections 200.1, 200.2, 200.3. Sections 200.1, 200.2 preferably have a rectangular cross section, section 200.3 has a round cross section for the purpose of glazing. For a hermetically sealed glazing that provides a helium leak rate of less than 10' ⁸ mbar l/s at a pressure difference of 1 bar it is necessary for the central part to be rotationally symmetrical, ie round. In one embodiment of the invention, the conductor of the electrical feedthrough according to the invention can be designed with three different sections, but it does not have to be; a conductor made of a single material or a one-piece conductor are also possible.

According to the invention, it can be provided that the three-part conductor is not produced as a one-piece component, but from a total of three individual parts, namely the two end parts 200.1, 200.2, onto which a plug is pushed and which is not glazed and has a rectangular cross-section, and the middle part 200.3 with round cross-section for glazing. The individual parts 200.1, 200.2, 200.3 are each produced using their own method and are connected to form the overall conductor 7.1, for example by soldering and/or welding. All ladder parts are made from one wire. The advantage of the three-part conductor is that the individual parts can be prefabricated individually in large quantities and the prefabricated individual parts are assembled into a conductor in a final process step.

In particular, in the case of a conductor composed of several individual parts, it is possible to choose not only the cross-section and shape, but also the material of each individual part differently. The materials of the end sections are preferably selected in such a way that they are matched to the contact requirements of the plugs that are connected to the conductor. The materials preferably provide a low contact or transition resistance. A high conductivity is also advantageous. In order to provide high conductivity, the end sections or end parts 200.1, 200.2 can preferably consist of copper or a copper alloy. The material of the middle section of the conductor is preferably matched to the glass material and the type of glazing, ie an adapted feedthrough or pressure glazing is present. In one embodiment, the center part or section 200.3 is preferably made of NiFe or a NiFe alloy. The choice of this material for the middle part allows for an easy Hermetically sealed glazing in contrast to Cu, for example, since the coefficient of expansion of NiFe is only around 9-10' ⁶ 1/K, while the surrounding metal has an expansion of around 13-10' ⁶ 1/K. Other possible materials for the middle section and/or end section of the conductor are brass, bronze, titanium, steel, stainless steel, aluminum or corresponding alloys. The conductor sections can include coatings that are matched to the materials of the plugs that are connected to the conductor. For better insertion into the plug to be connected to the conductor, the end sections of the conductor can include insertion bevels at the tip.

FIGS. 5 and 6 show two examples, each with two areas, of the use of partition walls, preferably with the electrical feedthroughs according to the invention, for separating individual areas. Of course, there can also be more than two areas, for example three or four areas.

5 shows a system, for example a storage system, with two areas, a first, dry area 1000 and a second, moist area 1100. In the present case, control electronics 1200 are arranged in the first, dry area 1000. FIG. Storage devices, for example battery cells 1300.1, 1300.2, 1300.3, 1300.4, are arranged in the second, moist area 1100. For cooling, the storage devices 1300.1, 1300.2, 1300.3, 1300.4 can be provided with immersion cooling. For this purpose, the storage devices 1300.1, 1300.2, 1300.3, 1300.4 are immersed in an immersion liquid, for example a fluoropolymer, synthetic ester or hydrocarbon/oil mixtures. In the partition 2000 between the first area 1000 and the second area 1100 is an electric

Implementation 1 introduced according to the invention. The electrical feedthrough 1 allows the first area 1000 and the second area 1100 to be electrically connected to one another, for example those in the first area 1000 housed control electronics 1200 with the memory device 1300.1, 1300.2, 1300.3, 1300.3 housed in the second area 1100

FIG. 6 shows a system that again has two areas, a first area 3000 and a second area 3100. In the embodiment according to FIG. 6, both areas are moist areas. In the exemplary embodiment according to FIG. 6, a plurality of storage devices 3300.1, 3300.2, 3300.3, 3300.4, 3300.5, 3300.6, 3300.7, 3300.8 are arranged in both wet areas without being restricted to this. In the exemplary embodiment shown, the storage device is immersed in a cooling liquid, for example an immersion liquid, both in the first area and in the second area. As in the embodiment according to FIG. 5, the two areas 3000 and 3100 are electrically connected to one another by a bushing 1 according to the invention. For example, a number of memory devices can be connected in series. The same components as in FIG. 5 are given the same reference numbers in FIG.

As an alternative to an arrangement of storage devices, in particular batteries, in the wet areas 3000, 3100, it would also be possible to provide a wet area, for example the area 3000, with an element of the control electronics instead of a storage device. In such a case, the control electronics or parts of the control electronics would then also be immersion-cooled.

The bushing according to the invention is used in particular in a component, in particular a system with a storage device and a partition wall which separates different areas, for example a wet area from a dry area. For example, a control device, in particular for a storage device, can be arranged in the dry area of the system. The storage device itself is arranged in the moist area and can be cooled or temperature-controlled by a liquid, for example water or oil or an immersion liquid. With the lead-through component according to the invention, it is possible for the first time to provide a lead-through in a simple manner that provides safe conduction through a partition that separates areas containing different media. The implementation according to the invention comprises a glazing that is pressure-resistant, resistant to cooling media and/or resistant to electrolytes. Furthermore, the bushing includes a fastening tab, which can be in one piece or joined together. Preferably, only control currents of a battery to be controlled are conducted to a control unit and vice versa through the conductors. In contrast to the very high currents in batteries, the control currents are currents with a low current value and practically no heat development. The use of a lead-through component according to the invention makes it possible to captively attach a plug to the conductors introduced into the lead-through component in a glass or glass-ceramic, which plug can also be easily removed again from the conductors of the lead-through component.

The invention comprises aspects disclosed in subsequent sentences which are not claims but part of the description as disclosed in J15/88 of the EPO.

sentences

1. Electrical feedthrough (1) comprising

- a lead-through component (3) with an opening (5)

- At least one conductor (7.1, 7.2) glazed into the opening (5) of the lead-through component in a glass or glass-ceramic material (9.1, 9.2), characterized in that

- At least one guide component (10.1, 10.2) connected to the lead-through component (3) is provided, wherein

- The guide component (10.1, 10.2) has a plastic, preferably a duroplastic plastic, as the material.

2. Electrical bushing according to sentence 1, characterized in that the guide component (10.1, 10.2) is designed such that it can be captively connected to the bushing component (3).

3. Electrical bushing according to clause 2, characterized in that the bushing component (3) comprises at least one undercut (20.1, 20.2) for the captive connection to the guide component (10.1, 10.2).

4. Electrical bushing according to one of sentences 1 to 3, characterized in that the undercut (20.1, 20.2) has a conical shape in the direction of the

Has lead-through component (3).

5. Electrical feedthrough according to one of sentences 1 to 4, characterized in that the guide component (10.1, 10.2) is designed such that there is at least one plug (12) which is connected to the at least one conductor (7.1, 7.2), picks up.

6. Electrical bushing according to sentence 5, characterized in that the plug (12) is designed in such a way that it can be connected captively to the guide component (10.1, 10.2).

7. Electrical feedthrough according to sentence 6, characterized in that for the captive connection of guide component (10.1, 10.2) and plug (12), the guide component (10.1, 10.2) has a recess (22) and the plug (12) has at least one latch or a projection (14).

8. Electrical bushing according to one of sentences 1 to 7, characterized in that the conductor (7.1, 7.2) has a first end section (200.1), preferably with a rectangular cross section, a middle section (200.3), preferably with a round cross section, and a second end section (200.2 ), preferably includes a rectangular cross section.

9. Electrical feedthrough according to sentence 8, characterized in that the first end section (200.1), the middle section (200.3) and the second end section (200.2) are individual parts which together form the conductor (7.1, 7.2) are preferably electrically connected, in particular soldered or welded. storage system with

- at least a first area and a second area

- a partition wall separating the first area from the second area, the first area being a wet area which contains a liquid, in particular water and/or oil, and comprising at least one storage device and the second area being a dry area, characterized in that the storage system in the bulkhead comprises an electrical feedthrough according to any one of claims 1 to 9. Storage system according to sentence 10, characterized in that the second area comprises at least one control device for controlling the storage device. Storage system according to sentence 11, characterized in that

Control signals are routed via the implementation of the control device to the storage device. Use of an electrical bushing according to one of sentences 1 to 9 in a partition wall which separates a moist area, in particular a water- or oil-carrying area, from a dry area. Use according to sentence 14, characterized in that the partition wall comprises an opening into which the bushing component of the bushing according to any one of claims 1-9 is inserted, preferably sealed with an O-ring. Conductor, in particular for a bushing, preferably a battery bushing, characterized in that the conductor (7.1, 7.2) has a first end section (200.1), preferably with a rectangular cross section, and a middle section (200.3), preferably with a round transverse section. Ladder according to sentence 15, characterized in that the ladder further comprises a second end section (200.2), preferably with a rectangular cross-section. Head according to one of sentences 15 to 16, characterized in that the first end section (200.1) and the middle section (200.3) are individual parts which are preferably electrically connected to one another to form a conductor (7.1, 7.2), in particular soldered and/or welded. A ladder according to any one of clauses 15 to 17, characterized in that the material of the first and second end sections and of the

middle section is one or more of the following materials:

- Cu, a Cu alloy,

- NiFe, a NiFe alloy

- Aluminum, an aluminum alloy

- Brass, an alloy of brass - Bronze, a bronze alloy

- Titanium, a titanium alloy

- Steel, an alloy of steel

- Kovar conductor according to any one of clauses 15 to 18, characterized in that the material of the end sections is adapted to the requirements for contact with the plug and/or the material of the middle section to the requirements for the glazing. Conductor according to one of sentences 15 to 19, characterized in that the middle section comprises NiFe or a NiFe alloy as material and the first end section and/or the second end section comprises Cu or a Cu alloy. Conductor according to one of the clauses 15 to 20, characterized in that the end sections comprise an insertion bevel and/or coatings matched to the connector. Use of a conductor according to any one of clauses 15 to 21 in a battery bushing. Use according to sentence 22, characterized in that the conductor in the battery bushing is a power line and/or a signal line.

Claims

25 claims

1. Electrical feedthrough (1) comprising

- a lead-through component (3) with an opening (5)

- The guide component (10.1, 10.2) has a plastic as the material.

2. Electrical bushing according to claim 1, characterized in that the guide component (10.1, 10.2) is designed such that it is captively connected to the bushing component (3).

3. Electrical bushing according to claim 2, characterized in that the bushing component (3) comprises at least one undercut (20.1, 20.2) for the captive connection to the guide component (10.1, 10.2).

4. Electrical bushing according to one of claims 1 to 3, characterized in that the undercut (20.1, 20.2) has a conical profile in the direction of the bushing component (3).

5. Electrical bushing according to one of claims 1 to 4, characterized in that the guide component (10.1, 10.2) is designed in such a way that it accommodates at least one plug (12) which is connected to the at least one conductor (7.1, 7.2).

6. Electrical feedthrough according to claim 5, characterized in that the plug (12) is designed such that it can be connected captively to the guide component (10.1, 10.2).

7. Electrical feedthrough according to claim 6, characterized in that for the captive connection of guide component (10.1, 10.2) and plug (12), the guide component (10.1, 10.2) has a recess (22) and the plug (12) has at least one latch or a projection (14).

8. Electrical feedthrough according to one of Claims 1 to 7, characterized in that the conductor (7.1, 7.2) has a first end section (200.1), preferably with a rectangular cross section, a middle section (200.3), preferably with a round cross section, and a second end section (200.2 ), preferably includes a rectangular cross section.

9. Electrical feedthrough according to claim 8, characterized in that the first end section (200.1), the middle section (200.3) and the second end section (200.2) are individual parts which are connected to one another to form the conductor (7.1, 7.2), in particular soldered.

10. Electrical bushing according to one of claims 1 to 7, characterized in that the conductor is integrally formed with a rectangular cross section. storage system with

- at least a first area and a second area

- a partition that separates the first area from the second area, the first area (1000, 3000) preferably being a moist area which has a liquid, in particular water and/or oil and/or an immersion liquid, or has an electrolyte, and the second The area (1100, 3100) is preferably a dry area or a wet area, characterized in that the storage system in the partition wall comprises an electrical feedthrough according to any one of claims 1 to 9. Storage system according to Claim 11, characterized in that the second area (3100) comprises at least one control device (1200) for controlling the storage device. Storage system according to claim 12, characterized in that

Control signals are routed via the implementation of the control device (1200) to the storage device. Use of an electrical bushing according to one of Claims 1 to 10 in a partition wall which separates a moist area, in particular a water- or oil-carrying area, from a dry area or moist area. 28 Use according to claim 14, characterized in that the partition wall comprises an opening into which the bushing component of the bushing according to one of claims 1 to 10 is inserted, preferably tightly with an O-ring. storage system with

- at least a first area and a second area

- a partition wall separating the first area from the second area, the first area being a dry and/or moist area which comprises a liquid, in particular water and/or oil, and/or an immersion liquid for cooling, characterized in that the second area is a wet area with a storage cell, in particular a storage cell of a storage device. Storage system according to Claim 16, characterized in that the partition wall comprises an electrical bushing, in particular according to one of Claims 1 to 10.