SE545063C2

SE545063C2 - An apparatus for the electrical connection of two electrical conductors

Info

Publication number: SE545063C2
Application number: SE2150792A
Authority: SE
Inventors: David Gotthardsson; Fredrik Eriksson
Original assignee: Scania Cv Ab
Priority date: 2021-06-21
Filing date: 2021-06-21
Publication date: 2023-03-21
Also published as: SE2150792A1

Abstract

An apparatus (100; 300; 500) comprising an interface (102) for providing an electrical connection between two electrical conductors (106, 108). The interface (102) comprises a cover (110) having one or more first seats (112), and a biasing member (114) attached to the cover (110). The first seat (112) is configured to position a first electrical conductor (106) of the two electrical conductors (106, 108). The cover (110) is connectable to a second part (120) having one or more second seats (122) for positioning a second electrical conductor (108) of the two electrical conductors (106, 108). The cover (110) is movable in relation to the second part (120) from a first position to a second position. When the cover (110) is connected to the second part (120) and is in the second position the biasing member (114) is configured to urge one (106, 108) of the two electrical conductors (106, 108) against the other one (106, 108) of the two electrical conductors (106, 108) for electrical contact (126) between the two electrical conductors (106, 108).

Description

AN APPARATUS FOR THE ELECTRICAL CONNECTION OF TWO ELECTRICAL CONDUCTORS Technical field Aspects of the present invention relate to an apparatus comprising an interface for providing an electrical connection between two electrical conductors.

Background ln general, electric vehicles, which have one or more electrical machines for the propulsion of the vehicle, may have one or more electrical batteries for providing electric power to the electrical machine. ln general, the electric vehicle has a vehicle electrical system, for example a vehicle high voltage system, which may be electrically connected, or connectable, to the electric battery or electric batteries of the vehicle. For example, the vehicle electrical system may transfer electric power or electric current between various electrical devices or units included in the electric vehicle.

Summary Conventionally, the vehicle electrical system of an electric vehicle includes electrical conductors, for example electrical cables or busbars, for the transfer of electric current between electrical devices or units, for example to and/or from the electric battery or the electric battery pack. The inventors of the present invention have found drawbacks in conventional electrical connections between electrical conductors, such as electrical cables or busbars, for example in conventional vehicle electrical systems but also in other conventional electrical systems not related to vehicles. For example, the inventors of the present invention have found that the performance of some conventional electrical connections is insufficient. For example, the inventors of the present invention have found that some conventional electrical connections are not sufficiently safe or user-friendly.

An object of embodiments of the invention is to provide a solution which mitigates or solves drawbacks and problems of conventional solutions.

The above and further objects are solved by the subject matter of the independent claim. Further advantageous embodiments of the invention can be found in the dependent claims.

According to a first aspect of the invention, the above mentioned and other objects are achieved with an apparatus comprising an interface for providing an electrical connection between two electrical conductors, wherein the interface comprises a cover having one or more first seats, wherein the interface comprises a biasing member attached to the cover, wherein the first seat is configured to position a first electrical conductor of the two electrical conductors, wherein the cover is connectable to a second part having one or more second seats for positioning a second electrical conductor of the two electrical conductors, wherein the cover is movable in relation to the second part from a first position to a second position, and wherein when the cover is connected to the second part and when the cover is in the second position the biasing member is configured to urge one of the two electrical conductors against the other one of the two electrical conductors for electrical contact between the two electrical conductors.

An advantage of the apparatus according to the first aspect is that the electrical connection between two electrical conductors is attained by joining the two electrical conductors to another without threads, i.e. no threaded or thread joint is required to provide the electrical contact between the two electrical conductors. lnstead, the electrical connection and the electrical contact between two electrical conductors is attained by the innovative interface including the biasing member which urges one of the two electrical conductors against the other one of the two electrical conductors when the cover is connected to the second part and when the cover is in the second position. An advantage of the apparatus according to the first aspect is that an improved electrical connection of two electrical conductors to one another is provided.

An advantage of the apparatus according to the first aspect is that no one of the two electrical conductors needs to be provided with any thread and no additional threaded joint or attachment is required by way of the innovative interface which introduces the cover and the biasing member. The use of threads for electrically connecting two electrical conductors is time consuming, especially when many electrical connections are to be established, for example during the assembly and connection of an electrical system, for example the electrical system of vehicle. Further, a threaded electrical connection involves enhanced requirements regarding electrically insulated tools used for joining, for example screwing, the threaded electrical connection. By way of the apparatus according to the first aspect, the cover is simply moved from the first position to the second position for electrically connecting the two electrical conductors. Thus, by the exclusion of threads and the inclusion of the innovative interface, the procedure of electrically connecting two electrical conductors is facilitated. Thus, an advantage of the apparatus according to the first aspect is that the procedure of electrically connecting two electrical conductors is facilitated and improved.

Further, the quality of the threaded electrical connection is dependent on how hard/tight or loose the threaded joint is tightened. The quality of a threaded electrical connection may be impaired if the threaded joint is tightened too tight or too loose, or tightened in a faulty or other insufficient manner. ln many cases there will be a difference in quality between a plurality of threaded electrical connections because of differences in tightness of the threaded joint, i.e. differences in clamping force. Further, threads may be damaged when tightening them. By way of the apparatus according to the first aspect, the difference in quality between a plurality of electrical connections is reduced, and the quality of the electrical connections is better controlled. Thus, an advantage of the apparatus according to the first aspect is that the performance of electrical connections is improved.

Some conventional threaded electrical connections are made of a material selected because of the high electrical conductivity of the material in question and not selected because of its mechanical capability for strong and durable clamping force. By way of the apparatus according to the first aspect, this poor compromise is avoided. Further, threads of threaded electrical connections take up a lot of space of the connection.

Further, by the exclusion of threaded electrical connections and the inclusion of the innovative interface, which comprises the cover and the biasing member, an improved standardization of electrical conductors is provided since the electrical conductors need not to be adapted to any dimensions of threads and need not to be configured to fit any threaded joint or attachment. Many various designs of electrical conductors can be used in connection with the apparatus according to the first aspect. An advantage of the apparatus according to the first aspect is that a flexible electrical connection of two electrical conductors to one another is provided. Further, an advantage of the apparatus according to the first aspect is that a less complex or less complicated electrical interconnection of two electrical conductors is provided. Because of the more flexible and less complicated electrical connection provided by the apparatus according to the first aspect, an unexpensive electrical interconnection of two electrical conductors is provided. Further, an advantage of the apparatus according to the first aspect is that unexpensive materials may be used for producing the apparatus, whereby an unexpensive electrical interconnection of two electrical conductors is provided. Since the same interface may be used for several kinds of electrical conductors, safety and user-friendliness are improved.

Since the biasing member is attached to the movable cover, the cover may cover the electrical contact of the two electrical conductors when the cover is in the second position. An advantage of the apparatus according to the first aspect is that an efficient protection of the electrical contact of the two electrical conductors against foreign objects and/or unintentional contact with a user is provided. Hereby, unintentional short circuits or electrical chocks are avoided. An advantage of the apparatus according to the first aspect is that an efficient protection of the electrical contact of the two electrical conductors against impurities, such as liquid, oil or dirt, is provided. For some embodiments, the cover may be made of an electrically insulating material, for example a polymer or a polymer composite. However, other materials and other electrically insulating materials are possible.

An advantage of the apparatus according to the first aspect is that the electrical insulation performance of the electrical connection can be more easily assured and more easily predicted, for example the long-term electrical insulation performance.

An advantage of the apparatus according to the first aspect is that an electrical connection, which is sufficient to be used in a vehicle high voltage system of a vehicle, can be attained. The electric power, or the electric current, for example the direct current, of the vehicle high voltage system is transferred at a high voltage, for example above 60 V, such as above 400 V. The electric power, or the electric current, of the vehicle high voltage system may be transferred at a voltage up to 1500 V, or above 1500 V.

The apparatus may be configured for direct current (DC). The apparatus may be configured for high voltage, such as a voltage above 60 V, for example above 400 V, such as above 650 V. For example, the apparatus may be configured for a voltage up to 1500 V, or above 1500 V. The apparatus may be configured for alternating current (AC). The number of apparatuses applied may be adapted to the intended application.

An advantage of the apparatus according to the first aspect is that the performance of electrical connections is improved. An advantage of the apparatus according to the first aspect is that electrical connections are safer and more user-friendly. For example, the operation of the innovative interface is easy to understand, and the innovative interface is easy to handle or operate by the operator or user. The electrical connection can be readily provided by the innovative interface without touching any electric current or voltage carrying part with a tool, for example by simply pushing the cover to the second position.

For some embodiments, it may be defined or described that the interface comprises the one or more first seats.

According to an advantageous embodiment of the apparatus according to the first aspect, when the cover is connected to the second part and when the cover is in the second position the biasing member is configured to urge the first electrical conductor against the second electrical conductor for electrical contact between the two electrical conductors. An advantage of this embodiment is that a further improved electrical interconnection of the two electrical conductors is provided. An advantage of this embodiment is that a further less complicated electrical interconnection of the two electrical conductors is provided.

According to a further advantageous embodiment of the apparatus according to the first aspect, when the cover is connected to the second part and when the cover is in the second position the cover is configured to cover the electrical contact between the two electrical conductors. An advantage of this embodiment is that an efficient protection of the electrical contact of the two electrical conductors against foreign objects and/or unintentional contact with a user is provided. Hereby, unintentional short circuits or electrical chocks are avoided. An advantage of this embodiment is that an efficient protection of the electrical contact of the two electrical conductors against impurities, such as liquid, oil or dirt, is provided. As mentioned above, for some embodiments, the cover may be made of an electrically insulating material, for example a polymer or a polymer composite.

According to another advantageous embodiment of the apparatus according to the first aspect, the first seat is configured to position the first electrical conductor in relation to the second seat, and wherein the second seat is configured to position the second electrical conductor in relation to the first seat. An advantage of this embodiment is that a further improved electrical interconnection of the two electrical conductors is provided. An advantage of this embodiment is that a further less complicated electrical interconnection of the two electrical conductors is provided. For some embodiments, it may be defined or described that the interface comprises the one or more second seats.

According to yet another advantageous embodiment of the apparatus according to the first aspect, wherein the cover is lockable in the second position to maintain the second position of the cover. An advantage of this embodiment is that a durable, secure and efficient electrical interconnection of the two electrical conductors is provided. An advantage of this embodiment is that a further improved electrical interconnection of the two electrical conductors is provided.

According to still another advantageous embodiment of the apparatus according to the first aspect, when the cover is connected to the second part and when the cover is in the second position the second part is configured to cover the electrical contact between the two electrical conductors. An advantage of this embodiment is that an efficient protection of the electrical contact of the two electrical conductors against foreign objects and/or unintentional contact with a user is provided. Hereby, unintentional short circuits or electrical chocks are avoided. An advantage of this embodiment is that an efficient protection of the electrical contact of the two electrical conductors against impurities, such as liquid, oil or dirt, is provided. For some embodiments, the second part may be made of an electrically insulating material, for example a polymer or a polymer composite. However, other materials and other electrically insulating materials are possible. For some embodiments, it may be defined or described that the interface comprises said second part.

According to an advantageous embodiment of the apparatus according to the first aspect, the cover is movably attached to the second part. An advantage of this embodiment is that electrical connections are even safer and even more user-friendly. For example, the operation of the innovative interface is easy to understand, and the innovative interface is easy to handle or operate by the user. An advantage of this embodiment is that a further improved electrical interconnection of the two electrical conductors is provided.

According to a further advantageous embodiment of the apparatus according to the first aspect, the cover is pivotally attachable or attached to the second part. An advantage of this embodiment is that electrical connections are even safer and even more user-friendly. For example, the operation of the innovative interface is easy to understand, and the innovative interface is easy to handle or operate by the user. An advantage of this embodiment is that a further improved electrical interconnection of the two electrical conductors is provided. However, for some alternative embodiments, the cover may be movably attachable or attached to the second part in other manners.

According to another advantageous embodiment of the apparatus according to the first aspect, the cover is lockable to the second part to maintain the second position of the cover. An advantage of this embodiment is that a durable, secure and efficient electrical interconnection of the two electrical conductors is provided. An advantage of this embodiment is that a further improved electrical interconnection of the two electrical conductors is provided.

According to yet another advantageous embodiment of the apparatus according to the first aspect, the interface comprises a locking arrangement for locking the cover to the second part to maintain the second position of the cover, wherein the locking arrangement comprises one the group of: a friction locking arrangement; a positive locking arrangement; v a bayonet locking arrangement; v a snap-on locking arrangement; v a snap-in locking arrangement; v a hook-and-loop locking arrangement; and v a threaded locking arrangement. An advantage of this embodiment is that a durable, secure and efficient electrical interconnection of the two electrical conductors is provided. An advantage of this embodiment is that a further improved electrical interconnection of the two electrical conductors is provided. For some alternative embodiments, other types of locking arrangements are possible.

According to still another advantageous embodiment of the apparatus according to the first aspect, when the cover is connected to the second part and when the cover is in the second position the cover and the second part together are configured to cover the electrical contact between the two electrical conductors. An advantage of this embodiment is that an efficient protection of the electrical contact of the two electrical conductors against foreign objects and/or unintentional contact with a user is provided. Hereby, unintentional short circuits or electrical chocks are avoided. An advantage of this embodiment is that an efficient protection of the electrical contact of the two electrical conductors against impurities, such as liquid, oil or dirt, is provided.

According to an advantageous embodiment of the apparatus according to the first aspect, when the cover is connected to the second part and when the cover is in the second position the cover and the second part together are configured to form a housing for housing the electrical contact between the two electrical conductors. An advantage of this embodiment is that an efficient protection of the electrical contact of the two electrical conductors against foreign objects and/or unintentional contact with a user is provided. Hereby, unintentional short circuits or electrical chocks are avoided. An advantage of this embodiment is that an efficient protection of the electrical contact of the two electrical conductors against impurities, such as liquid, oil or dirt, is provided.

According to a further advantageous embodiment of the apparatus according to the first aspect, the one or more first seats forms/form an opening of the cover, wherein the opening of the cover is configured to allow therethrough the first electrical conductor. An advantage of this embodiment is that a durable, secure and efficient electrical interconnection of the two electrical conductors is provided. An advantage of this embodiment is that electrical connections are even safer and even more user- friendly. For example, since the first seat in the form an opening is provided on the movable cover, the operation of the innovative interface is easy to understand, and the innovative interface is easy to handle or operate by the user. An advantage of this embodiment is that a further improved electrical interconnection of the two electrical conductors is provided.

According to another advantageous embodiment of the apparatus according to the first aspect, the one or more second seats forms/form an opening of the second part, wherein the opening of the second part is configured to allow therethrough the second electrical conductor. An advantage of this embodiment is that a durable, secure and efficient electrical interconnection of the two electrical conductors is provided. An advantage of this embodiment is that a further improved electrical interconnection of the two electrical conductors is provided.

According to yet another advantageous embodiment of the apparatus according to the first aspect, the interface comprises a spacer, wherein the biasing member is configured to abut against one of the two electrical conductors via the spacer to form a space between the biasing member and the two electrical conductors. An advantage of this embodiment is that a flexible electrical connection of two electrical conductors to one another is provided. For example, the spacer may be given different thicknesses and be made of different materials. An advantage of this embodiment is that a further improved electrical interconnection of the two electrical conductors is provided. For some embodiments, the spacer may be attached to the biasing member.

According to still another advantageous embodiment of the apparatus according to the first aspect, the spacer comprises or consists of an electrical insulator. An advantage of this embodiment is that the cover may be efficiently electrically insulated from the electrical conductors via the spacer. For alternative embodiments, the biasing member may comprise or consist of an electrical insulator. For example, the electrical insulator may be made of an electrically insulating material, for example a polymer or a polymer composite. However, other materials and other electrically insulating materials are possible.

According to an advantageous embodiment of the apparatus according to the first aspect, the biasing member comprises one the group of: an elastic member; a resilient member; v a spring; v a compression spring; v a helical spring; v a flat spring; v an arc spring; v a leaf spring; v a V-spring; and v a bushing. ll An advantage of this embodiment is that a further improved electrical interconnection of the two electrical conductors is provided. For some alternative embodiments, other types of biasing members are possible.

According to a further advantageous embodiment of the apparatus according to the first aspect, the cover is movable in relation to the second part between the first position and the second position, i.e. the cover is also movable in relation to the second part from the second position to the first position. An advantage of the apparatus according to the first aspect is that a flexible electrical connection of two electrical conductors to one another is provided. For example, the electrical conductors may be electrically disconnected and detached from one another in an easy and user-friendly manner, for example upon maintenance work or repair work. Thus, individual electrical connections may be readily disconnected and replaced instead of replacing an entire electrical system. An advantage of this embodiment is that a further improved electrical interconnection of the two electrical conductors is provided. When instead threaded electrical connections are used, it is more time consuming to disconnect the threaded electrical connections upon maintenance work or repair work, because the threaded electrical connections need to be unscrewed, and because of the unscrewing and the subsequent "rescrewing" of the threaded electrical connections, the quality of the electrical connections is put at risk.

According to another advantageous embodiment of the apparatus according to the first aspect, the interface comprises an indicator for indicating sufficient or insufficient contact between the two electrical conductors. An advantage of this embodiment is that electrical interconnection of the two electrical conductors is even safer, more secure and even more user-friendly. For example, the operation of the innovative interface is easy to understand, and the user receives an indication when the contact between the two electrical conductors is sufficient. An advantage of this embodiment is that a further improved electrical interconnection of the two electrical conductors is provided.

According to yet another advantageous embodiment of the apparatus according to the first aspect, the indicator comprises an indication opening formed by the cover,wherein the indicator comprises a protrusion indirectly or directly attached to the biasing member, wherein the protrusion is movable in relation to the cover, and wherein the protrusion is configured to extend through the indication opening. An advantage of this embodiment is that electrical interconnection of the two electrical conductors is even safer, more secure and even more user-friendly. For example, the operation of the innovative interface is easy to understand, and the user receives an indication when the contact between the two electrical conductors is sufficient. An advantage of this embodiment is that a further improved electrical interconnection of the two electrical conductors is provided.

According to a second aspect of the invention, the above mentioned and other objects are achieved with a connection arrangement comprising a plurality of apparatuses according to any one of the above- or below-mentioned embodiments, wherein the interface of a first apparatus of the plurality of apparatuses is configured to provide a first electrical connection between two electrical conductors of a first group of electrical conductors, and wherein the interface of a second apparatus of the plurality of apparatuses is configured to provide a second electrical connection between two electrical conductors of a second group of electrical conductors.

Advantages of the connection arrangement according to the second aspect and its embodiments correspond to the above- or below-mentioned advantages of the apparatus according to the first aspect and its embodiments.

According to a third aspect of the invention, the above mentioned and other objects are achieved with an electrical system comprising one or more of the group of: v an apparatus according to any one of the above- or below-mentioned embodiments; and v a connection arrangement according to any one of the above- or below- mentioned embodiments, wherein the electrical system comprises the electrical conductors.Advantages of the electrical system according to the third aspect and its embodiments correspond to the above- or below-mentioned advantages of the apparatus according to the first aspect and its embodiments.

According to a fourth aspect of the invention, the above mentioned and other objects are achieved with a vehicle electrical system comprising one or more of the group of: v an apparatus according to any one of the above- or below-mentioned embodiments; v a connection arrangement according to any one of the above- or below- mentioned embodiments; and v an electrical system according to any one of the above- or below-mentioned embodiments.

Advantages of the vehicle electrical system according to the fourth aspect and its embodiments correspond to the above- or below-mentioned advantages of the apparatus according to the first aspect and its embodiments.

According to an advantageous embodiment of the vehicle electrical system according to the fourth aspect, the vehicle electrical system is a vehicle high voltage system.

For some embodiments, it may be defined that the electrical system or the vehicle electrical system is configured for a high voltage, such as a voltage above 60 V, for example above 400 V, or above 450 V, such as above 650 V. For example, the electrical system or the vehicle electrical system may be configured for a voltage up to 1500 V and/or for a voltage above 1500 V.

According to a fifth aspect of the invention, the above mentioned and other objects are achieved with a vehicle comprising one or more of the group of: v an apparatus according to any one of the above- or below-mentioned embodiments;v a connection arrangement according to any one of the above- or below- mentioned embodiments; 0 an electrical system according to any one of the above- or below-mentioned embodiments; and v a vehicle electrical system according to any one of the above- or below- mentioned embodiments.

Advantages of the vehicle according to the fifth aspect and its embodiments correspond to the above- or below-mentioned advantages of the apparatus according to the first aspect and its embodiments.

The vehicle may be a wheeled vehicle, i.e. a vehicle having wheels. The vehicle may for example be a bus, a tractor vehicle, a heavy vehicle, a truck, or a car. The tractor vehicle, and/or the truck, may, or may be configured to, haul, or pull, a trailer. However, other types of vehicles are possible. The vehicle may be referred to as a motor vehicle. The vehicle may be an electric vehicle, EV, for example a hybrid vehicle or a hybrid electric vehicle, HEV, or a battery electric vehicle, BEV. Thus, a hybrid electric vehicle, HEV, and a battery electric vehicle, BEV, are versions, or examples, of an electric vehicle, EV. The EV may comprise one or more electric machines. The vehicle may comprise a combustion engine. For some embodiments, the vehicle may include only a combustion engine for the propulsion of the vehicle.

The vehicle may comprise a powertrain. The powertrain may be configured in accordance with any one of the embodiments disclosed above or below. The powertrain of the vehicle may comprise one or more of the group of: a combustion engine; one or more electric battery cells; an electric battery arrangement; an electric battery pack.

The above-mentioned features and embodiments of the apparatus, the connection arrangement, the electrical system, the vehicle electrical system and the vehicle, respectively, may be combined in various possible ways providing further advantageous embodiments.

Further advantageous embodiments of the apparatus, the connection arrangement, the electrical system, the vehicle electrical system and the vehicle according to the present invention and further advantages with the embodiments of the present invention emerge from the detailed description of embodiments.

Brief Description of the Dra wings Embodiments of the invention will now be illustrated, for exemplary purposes, in more detail by way of embodiments and with reference to the enclosed drawings, where similar references are used for similar parts, in which: Figure 1 Figure 2 FigureFigure 4 Figure 5A Figure 5B FigureFigureFigureFigureFigureis a schematic perspective view of a first embodiment of the apparatus according to the first aspect of the invention; is a schematic side view of the apparatus of figure 1; is a schematic side view of the cover of the apparatus of figures 1 and 2; is a schematic side view of the second part illustrated in figures 1 and 2; is a schematic perspective view of a first embodiment of the electrical system according to the third aspect of the invention including the apparatus of figures 1 and 2, wherein the cover is in the first position; is another schematic perspective view of a first embodiment of the electrical system according to the third aspect of the invention including the apparatus of figures 1 and 2, wherein the cover is in the first position; is a schematic side view of the electrical system and the apparatus of figures 5A-5B, wherein the cover is in the first position; is a schematic perspective view of the electrical system and the apparatus of figures 5A-5B and 6 with the cover in the second position; is a schematic side view of the electrical system and the apparatus of figures 5A-5B and 6 with the cover in the second position; is a schematic bottom view of the electrical system and the apparatus of figures 7 and 8 with the with the cover in the second position; is a schematic front view of the electrical system and the apparatus of figures 7 and 8 with the with the cover in the second position; FigureFigureFigureFigureFigureFigureFigureFigureFigureFigureFigureis a schematic perspective view of a second embodiment of the electrical system according to the third aspect of the invention and a second embodiment of the apparatus according to the first aspect of the invention, wherein the cover is in the first position; is a schematic side view of the electrical system and the apparatus of figure 11, wherein the cover is in the first position; is a schematic perspective view of the electrical system and the apparatus of figures 11 and 12 with the cover in the second position; is a schematic side view of the electrical system and the apparatus of figures 11 and 12 with the cover in the second position; is a schematic perspective view of a third embodiment of the electrical system according to the third aspect of the invention and a third embodiment of the apparatus according to the first aspect of the invention, wherein the cover is in the first position; is a schematic side view of the electrical system and the apparatus of figure 15, wherein the cover is in the first position; is a schematic perspective view of the electrical system and the apparatus of figures 15 and 16 with the cover in the second position; is a schematic side view of the electrical system and the apparatus of figures 15 and 16 with the cover in the second position; is a schematic perspective view of an embodiment of the connection arrangement according to the second aspect of the invention including two apparatuses according to the second embodiment illustrated in figures 11 to 14, wherein the covers are in the first position; is a schematic perspective view of the connection arrangement and the two apparatuses of figure 19, wherein the covers are in the second position; and is a schematic side view of an embodiment of the vehicle according to the fifth aspect of the invention and an embodiment of the vehicle electrical system according to the fourth aspect of the invention.Detailed Description With reference to figures 1 to 10, a first embodiment of the apparatus 100 according to the first aspect is schematically illustrated. The apparatus 100 includes an interface 102 for providing an electrical connection (see figures 7 and 8) between two electrical conductors 106, 108. The interface 102 includes a cover 110. The cover 110 has, or comprises, one or more first seats 112. Further, the interface 102 includes a biasing member 114 attached to the cover 110. For some embodiments, it may be described, or defined, that the cover 110 has an inner side 115 and an outer side 117. For some embodiments, the biasing member 114 may be attached to the inner side 115 of the cover 110. For some embodiments, the biasing member 114 may be attached to the cover 110 by one or more attachments or means of attachments, for example a screw, an adhesive, or any other means of attachments. For some embodiments, the biasing member 114 may be attached to the cover 110 by being integrally formed with the cover 110. For some embodiments, it may be defined that the cover 110 comprises the biasing member With reference to figures 5A to 10, it is to be understood that the electrical conductors 106, 108 may be configured or designed in various ways different from what is illustrated in the figures. For example, in the figures 5A to 10, only a section of each one 106, 108 of the electrical conductors 106, 108 is illustrated. lt is to be understood that each one 106, 108 of the electrical conductors 106, 108 may have a longer longitudinal extension. This may also apply to the other electrical conductors disclosed hereinbelow. Each one 106, 108 of the electrical conductors 108, 106 may be made of, or may comprise, any suitable electrically conductive material, such as a material comprising or consisting of a metal or a metal alloy, for example copper, brass, or aluminum. However, other materials are possible. Each one 106, 108 of the electrical conductors 108, 106 may be provided with an electrical insulation, for example a sheath, or a sleeve, for example made of a polymer material. For some embodiments, one or more of the electrical conductors 106, 108 may comprise an electrical cable. For some embodiments, one or more of the electrical conductors 106, 108 may comprise a busbar.With reference to figures 5A to 10, also a first embodiment of the electrical system 200 according to the third aspect of the invention is schematically illustrated, wherein the electrical system 200 includes the apparatus 100 and the electrical conductors 106, With reference to figures 1 to 10, for some embodiments, the cover 110 may be made of an at least partially electrically insulting material, for example a polymer or a polymer composite. For example, the exterior of the cover 110 may be made of an electrically insulating material while the core of the cover 110 is made of any other material, for example an electrically conducting material, such as a metal or a metal alloy. For some embodiments, the cover 110, i.e. substantially the entire cover 110, may be made of an electrically insulating material, for example a polymer or a polymer composite. However, other materials and other electrically insulating materials are possible.

With reference to figures 1 to 10, the biasing member 114 may comprise an elastic member or a resilient member. For some embodiments, the biasing member 114 may be referred to as a spring member or resilient member. The biasing member 114 may comprise one or more of the group of: an elastic member; a resilient member; a spring; a compression spring; a helical spring; a flat spring; an arc spring; a leaf spring; a V- spring; and a bushing. However, other types of biasing members are possible. ln the embodiment illustrated in figures 1 to 10, the biasing member 114 comprises a spring 116, more specially a helical spring 116, and even more specifically a compression spring 116. However, other types of biasing members 114 or springs are possible.

With reference to figures 1 to 10, the first seat 112 is configured to position a first electrical conductor 106 of the two electrical conductors 106, 108. ln the embodiment illustrated in figures 1 to 10, the first seat 112 may be provided on a spacer 118 attached, or attachable, to the biasing member 114, which in turn is attached to the cover 110. For some embodiments, it may be defined that the cover 110 comprises the spacer 118. However, for other embodiments, the first seat 112 may be provided directly on the cover 110, and/or on another element attached, or attachable, to the cover 110, for example on the biasing member 114. For some embodiments, the first seat 112 may be configured to orient, hold, and/or support, the first electrical conductor106. For some embodiments, the first seat 112 may comprise one or more of the group of: a part of the cover 110; a portion of the cover 110; a base of the cover 110; and a surface of the cover With reference to figures 1 to 10, the cover 110 is connectable, or attachable, to a second part 120, wherein the second part 120 has, or comprises, one or more second seats 122. The second seat 122 is configured to position a second electrical conductor 108 of the two electrical conductors 106, 108. For some embodiments, the second seat 122 may comprise one or more of the group of: a part of the second part 120; a portion of the second part 120; a base of the second part 120; and a surface of the second part 120. ln the embodiment illustrated in figures 1 to 10, the one or more second seats 122 forms/form an opening 124 of the second part 120, for example a circular opening 124. The opening 124 of the second part 120 is configured to allow therethrough the second electrical conductor 108. However, for other embodiments, the second seat 122 may have other forms, shapes or configurations. For some embodiments, the second seat 122 may be configured to orient, hold, and/or support, the second electrical conductor 108. For some embodiments, the cover 110 is connected, or attached, to the second part 120. lt may be defined or described that the second seat 122 and/or the opening 124 formed by the one or more second seats 122 is configured to receive the second electrical conductor With reference to figures 1 to 4, in the illustrated embodiment, a first end portion 123 of the cover 110 is connectable, or connected, to the second part 120, for example to a first end portion 125 of the second part 120. However, in other embodiments, the cover 110 may be connectable, or connected, to the second part 120 in other ways. ln the illustrated embodiment, the cover 110 is U-shaped, or, more specifically, U-shaped when viewed from the side. ln the illustrated embodiment, the second part 120 is L- shaped, or, more specifically, L-shaped when viewed from the side. However, it is to be understood that the other shapes of the cover 110 and the second part 120, respectively, are possible. When the cover 110 is U-shaped and thus has two legs, the first end portion 123 of the cover 110 may be located at the end of one of the legs of the U-shape or U-shaped cover 110. When the second part 120 is L-shaped and thus has two legs, the first end portion 125 of the second part 120 may be located at the end of one of the legs of the L-shape or L-shaped second part With reference to figures 1 to 10, for some embodiments, the cover 110 may be described to be movably attached to the second part 120. For some embodiments, the cover 110 may be pivotally attachable, or pivotally attached, to the second part 120. Thus, the cover 110 may be rotatable about a pivot axis 127 (or an axis of rotation) in relation to the second part 120. However, in alternative embodiments, the cover 110 may be attached or attachable to the second part in other manners. For example, for some embodiments, the cover may be slidable in relation to the second part.

With reference to figures 1 to 10, the cover 110 is movable in relation to the second part 120 from a first position to a second position. ln figures 1, 2, 5A-5B and 6, the cover 110 is positioned in the first position. ln figures 7 to 10, the cover 110 is positioned in the second position. lt is to be understood that for some embodiments the cover 110 may be configured to be positioned in other positions in addition to the first and second positions, for example intermediate positions between the first and second positions. lt is to be understood that since the biasing member 114 is attached to the cover 110, it is implied that the biasing member 114 is movable in relation to the second part 120. For some embodiments, the cover 110 may be movable in relation to the second part 120 between the first position and the second position, i.e. the cover 110 may also be movable in relation to the second part 120 from the second position to the first position.

With reference to figures 7 to 10, when the cover 110 is connected to the second part 120 and when the cover 110 is in the second position the biasing member 114 is configured to urge one 106, 108 of the two electrical conductors 106, 108 against the other one 106, 108 of the two electrical conductors 106, 108 for electrical contact 126 between the two electrical conductors 106, 108. For some embodiments, it may be defined that when the cover 110 is moved from the first position to the second position, the biasing member 114 is moved from a position where the biasing member 114 does not urge one 106, 108 of the two electrical conductors 106, 108 against the other one 106, 108 of the two electrical conductors 106, 108 to the position where the biasingmember 114 urges, or forces, one 106, 108 of the two electrical conductors 106, 108 against the other one 106, 108 of the two electrical conductors 106, 108 for electrical contact 126 between the two electrical conductors 106, With reference to figures 1 to 10, for some embodiments, it may be defined or described that when the cover 110 is in the first position the biasing member 114 is configured for no urge of one 106, 108 of the two electrical conductors 106, 108 against the other one 106, 108 of the two electrical conductors 106, 108 and/or configured to provide no electrical contact between the two electrical conductors 106, 108. For some embodiments, the interface 102 may be configured such that when the cover 110 is in the first position the biasing member 114 is located farther away from the second electrical conductor 108 in relation to when the cover 110 is in the second position. For some embodiments, the interface 102 may be configured such that when the cover 110 is in the first position the biasing member 114 is located farther away from the second part 120 in relation to when the cover 110 is in the second position.

With reference to figures 7 to 10, for some embodiments, it may be defined or described that when the cover 1 10 is connected to the second part and when the cover 110 is in the second position the biasing member 114 is configured to urge one 106, 108 of the two electrical conductors 106, 108 in a direction toward the other one 106, 108 of the two electrical conductors 106, 108 for electrical contact 126 between the two electrical conductors 106, 108. For some embodiments, the cover 110 may be described to function as a lever configured to move and/or force the biasing member 114 to urge one 106, 108 of the two electrical conductors 106, 108 against the other one 106, 108 of the two electrical conductors 106, 108 for electrical contact 126 between the two electrical conductors 106, With reference to figures 7 to 10, for some embodiments, when the cover 110 is in the second position the biasing member 114 may be described to be configured to force, or push, or press, one 106, 108 of the two electrical conductors 106, 108 against the other one 106, 108 of the two electrical conductors 106, 108 for electrical contact 126 between the two electrical conductors 106,With reference to figures 7 to 10, for some embodiments, when the cover 110 is connected to the second part 120 and is in the second position the biasing member 114 may be configured to urge the first electrical conductor 106 against the second electrical conductor 108 for electrical contact 126 between the two electrical conductors 106, With reference to figures 7 to 10, for some embodiments, when the cover 110 is connected to the second part 120 and when the cover 110 is in the second position the cover 110 may be configured to cover the electrical contact 126 between the two electrical conductors 106, 108. For some embodiments, the first position may be disclosed as an open position, i.e. a position in which the cover 110 is open. For some embodiments, the second position may be disclosed as a closed position, i.e. a position in which the cover 110 is closed. For some embodiments, it may be defined that when the cover 110 is connected to the second part 120 and when the cover 110 is in the second position the second part 120 is configured to cover the electrical contact 126 between the two electrical conductors 106, 108. For some embodiments, when the cover 110 is connected to the second part 120 and when the cover 1 10 is in the second position the cover 110 and the second part 120 together may be configured to cover the electrical contact 126 between the two electrical conductors 106, 108. For some embodiments, when the cover 110 is connected to the second part 120 and when the cover 110 is in the second position, the cover 110 and the second part 120 together are configured to form a housing 128 for housing the electrical contact 126 between the two electrical conductors 106, With reference to figures 7 to 10, when the cover 110 is in the second position, one or more of the cover 110, the second part 120 and the housing 128 may be configured to provide protection of the electrical contact 126 of the two electrical conductors 106, 108 against foreign objects and/or unintentional contact with a user. Hereby, unintentional short circuits or electrical chocks are avoided. When the cover 110 is in the second position, one or more of the cover 1 10, the second part 120 and the housing 128 may be configured to protect the electrical contact 126 of the two electrical conductors 106, 108 against impurities, such as liquid, oil or dirt. When the cover 110 is in the second position, one or more of the cover 110, the second part 120 and thehousing 128 may be configured to provide electrical shielding of the electrical contact 126 between the two electrical conductors 106, With reference to figures 1 to 10, for some embodiments, it may be defined or described that the interface 102 comprises the second part 120. For some embodiments, it may be defined or described that the interface 102 comprises the one or more first seats 112. For some embodiments, it may be defined or described that the interface 102 comprises the one or more second seats With reference to figures 1 to 10, for some embodiments, the second part 120 may be made of an at least partially electrically insulting material, for example a polymer or a polymer composite. For example, the exterior of the second part 120 may be made of an electrically insulating material while the core of the second part 120 is made of any other material, for example an electrically conducting material, such as a metal or a metal alloy. For some embodiments, the second part 120, i.e. substantially the entire second part 120, may be made of an electrically insulating material, for example a polymer or a polymer composite. However, other materials and other electrically insulating materials are possible.

With reference to figures 1 to 10, the first seat 112 may be configured to position the first electrical conductor 106 in relation to the second seat 122 while the second seat 122 may be configured to position the second electrical conductor 108 in relation to the first seat With reference to figures 7 to 10, the cover 110 may be lockable in the second position to maintain the second position of the cover 110. More specifically, for some embodiments, the cover 110 is lockable to the second part 120 to maintain the second position of the cover 1 10, for example detachably lockable to the second part 120. With reference to figures 1 to 10, the interface 102 may include a locking arrangement 130 for locking the cover 110 to the second part 120 to maintain the second position of the cover 110. The locking arrangement 130 may include one or more of the group of: a friction locking arrangement; a positive locking arrangement; a bayonet locking arrangement; a snap-on locking arrangement; a snap-in locking arrangement; a hook-and-loop locking arrangement; and a threaded locking arrangement. However, other locking arrangements are possible. ln the embodiment illustrated in figures 1 to 10, the locking arrangement 130 includes a snap-on locking arrangement 132, or a snap-in locking arrangement. ln the illustrated embodiment, the snap-on locking arrangement 132 comprises a projection 134, for example a hook, and a stop 136. The projection 134 and the stop 136 are configured to engage one another and be locked to one another, for example detachably locked to one another, thereby locking the cover 110 to the second part 120 to maintain the second position of the cover 110. ln the shown embodiment, the projection 134 is provided at one 110, 120 of the cover 110 and second part 120 while the stop 136 is provided at the other one 110, 120 of the cover 110 and second part 120. More specifically, in the shown embodiment, the projection 134 is provided at the cover 110 while the stop 136 is provided at the second part 120. However, for other embodiments, it could be the other way around. The stop 136 may be described to be complementary to the projection With reference to figures 1 to 10, the snap-on locking arrangement 132 or snap-in locking arrangement may be configured to produce an indication or indicative sound when engaging, for example when the projection 134 and the stop 136 engage one another and are being locked to one another. The snap-on locking arrangement 132 or snap-in locking arrangement may be configured to produce an indication or indicative sound audible to an operator or user. The indicative sound may be audible to the operator, which gives the operator an indication that the snap-on locking arrangement 132 has engaged and has indeed been locked. However, in other embodiments, other locking arrangements 130 and other snap-on locking arrangements 132 are possible.

With reference to figures 1 to 10, in the illustrated embodiment, the locking arrangement 130 is provided at second end portions 138, 140 of the cover 110 and of the second part 120. For example, the projection 134 may be provided at the second end portion 138, 140 of one 110, 120 of the cover 110 and second part 120 while the stop 136 is provided at the second end portion 138, 140 of the other one 110, 120 of the cover 110 and second part 120. ln the shown embodiment, the projection 134 is provided at the second end portion 138 of the cover 110 while the stop 136 is provided at the second end portion 140 of the second part 120. However, for other embodiments, it could be the other way around. lt is to be understood that in other embodiments, the locking arrangement 130 may be provided elsewhere. When the cover 110 is U-shaped and thus has two legs, the second end portion 138 of the cover 110 may be located at the end of one of the legs of the U-shape or U-shaped cover 1 10, for example a leg different from the leg where the first end portion 123 of the cover 110 is located. When the second part 120 is L-shaped and thus has two legs, the second end portion 140 of the second part 120 may be located at the end of one of the legs of the L-shape or L-shaped second part 120, for example a leg different from the leg where the first end portion 125 of the second part 120 is located.

With reference to figures 1 to 10, the interface 102 may include a spacer 118. The spacer 118 may be comprise or consist of a disc or a plate. When the interface 102 includes a spacer 118, the biasing member 114 is configured to abut against one 106, 108 of the two electrical conductors 106, 108 via the spacer 118 to form a space, or a distance, between the biasing member 114 and the two electrical conductors 106, 108. For example, the biasing member 114 may be configured to abut against the first electrical 106, 108 via the spacer 118 to form a space, or a distance, between the biasing member 114 and the first electrical conductor 106. For some embodiments, the spacer 118 is attached to the biasing member 114. For some embodiments, the spacer 118 comprises or consists of an electrical insulator. The electrical insulator of the spacer 118 may be made of an electrically insulating material, for example a polymer or a polymer composite. However, other materials and other electrically insulating materials are possible. ln alternative embodiments, the biasing member 114 may comprise or consist of an electrical insulator.

With reference to figures 1 to 10, the interface 102 may include an indicator 142 for indicating sufficient or insufficient contact between the two electrical conductors 106, 108. The indicator 142 may be configured to indicate sufficient or insufficient physical/mechanical contact and sufficient or insufficient electrical contact between the two electrical conductors 106, 108. The indicator 142 may be described as a visual indicator. For example, the indicator 142 may be visible or invisible to an operator or user. For some embodiments, the indicator 142 may include an indication openingformed by the cover 110. Further, the indicator 142 may include a protrusion 146 indirectly or directly attached to the biasing member 114. The protrusion 146 is movable in relation to the cover 110. The protrusion 146 is configured to extend, or protrude, through the indication opening 144. For some embodiments, the protrusion 146 of the indicator 142 may be attached to one or more of the spacer 118 and the biasing member 114. When the biasing member 114 comprises a helical spring 116, the protrusion 146 may be configured to extend through the helical spring 116, for example in the direction of a longitudinal axis 147 defined by the helical spring With reference to figures 1 to 10, for example, when there is a sufficient contact between the two electrical conductors 106, 108, the protrusion 146 protrudes, or protrudes sufficiently, through the indication opening 144, and the protrusion 146 may, for example, be visible to an operator, or seen by the operator. For example, when there is an insufficient contact between the two electrical conductors 106, 108, there is a lack of protrusion or there is an insufficient protrusion of the protrusion 146 through the indication opening 144, and the protrusion 146 may, for example, be invisible to an operator, or not seen by the operator. Thus, the position of the protrusion 146 in relation to the indication opening 144 and/or in relation to the cover 110 may indicate sufficient or insufficient contact between the two electrical conductors 106, 108. ln figures 5A- 5B and 6, there is a lack of protrusion or there is an insufficient protrusion of the protrusion 146 through the indication opening 144, which indicates insufficient contact between the two electrical conductors 106, 108. For example, in figures 5A-5B and 6, the protrusion 146 is not visible, or invisible, to an operator. ln figures 7 and 8, the protrusion 146 protrudes, or protrudes sufficiently, through the indication opening 144, which indicates sufficient contact between the two electrical conductors 106, 108. For example, in figures 7 and 8, the protrusion 146 is visible to an operator.

With reference to figures 1 to 10, the cover 110 may include a grip 148 configured to be gripped or operated by an operator or user, for example gripped by the hand of the operator. Thus, the grip 148 of the cover 110 may be configured for manual operation by an operator. The second part 120 may include a grip 150 configured to be gripped by an operator or user, for example gripped by the hand of the operator.With reference to figures 1 to 10, for some embodiments, the first electrical conductor 106 may comprise a lug 152. The lug 152 may, for example, include a lug opening 154. For some embodiments, the second electrical conductor 108 may comprise a projection 156 configured to engage the lug opening 154 of the lug 152 of the first electrical conductor 106. For some embodiments, the spacer 118 may comprise a recess for receiving the projection 156, or a portion of the projection 156, of the second electrical conductor 108. However, it is to be understood that other configurations of the first and second electrical conductors 106, 108 are possible. For example, the first and second electrical conductors 106, 108 may be provided without any lug opening 154 and projection With reference to figures 1 to 10, the apparatus 100 may be configured for direct current. The apparatus 100 may be configured for high voltage, such as a voltage above 60 V, for example above 400 V, such as above 650 V. For example, the apparatus 100 may be configured for a voltage up to 1500 V, or above 1500 V. The apparatus 100 may be configured for high voltage conductors 106, 108, wherein the high voltage conductors 106, 108 are configured for high voltage, such as a voltage above 60 V, for example above 400 V, such as above 650 V.

With reference to figures 11 to 14, a second embodiment of the apparatus 300 according to the first aspect is schematically illustrated. Further, with reference to figures 11 to 14, a second embodiment of the electrical system 400 according to the third aspect of the invention is schematically illustrated, wherein the electrical system 400 includes the apparatus 300 and electrical conductors 406, 408. Several features of the second embodiment of the apparatus 300 may correspond to features of the first embodiment of the apparatus 100 of figures 1 to 10 and are thus not repeated here. ln a corresponding manner, several features of the second embodiment of the electrical system 400 may correspond to features of the first embodiment of the electrical system 200 of figures 1 to 10 and are thus not repeated here. ln figures 11 and 12, the cover 310 is positioned in the first position. ln figures 13 and 14, the cover 310 is positioned in the second position.With reference to figures 11 to 14, the apparatus 300 illustrated in figures 11 to 14 differs from the apparatus 100 illustrated in figures 1 to 10 in that the cover 310 comprises one or more first seats 312 forming an opening 358 of the cover 310, and in that the opening 324 formed by the one or more second seats 322 of the second part 320 and the biasing member 114 are displaced in a direction away from the connection between the cover 310 and the second part 320, or away from the pivot axis 127, or away from the first end portion 325 of the second part 320, for example toward the second end portion 340 of the second part 320, or toward the locking arrangement 130, or toward the grip 350 of the second part 320. The opening 358 of the cover 310 is configured to allow therethrough the first electrical conductor 406. With reference to figures 17 and 18, also the one or more first seats 512 of a cover 510 of the third embodiment of the apparatus 500 according to the first aspect form/forms an opening 558 of the cover 510. By way of the opening 358 of the cover 310, a screened, or shielded, connection of the first electrical conductor 406 to the cover 310 may be provided. Further, when the first electrical conductor 406 is provided with a screen, for example forming a shielded or screened cable, the screen of the first electrical conductor 406 may continue through the opening 358 of the cover 310. The opening 358, or the first seat 312, of the cover 310 may be attachable to the first electrical conductor With reference to figures 11 to 14 and 17, for example, the opening 358, 558 formed by the one or more first seats 312, 512 may be a circular opening 358, 558. However, for other embodiments, the opening 358, 558 formed by the one or more first seats 312, 512 may have other forms, shapes or configurations. lt may be defined or described that the first seat 312, 512 and/or the opening 358, 558 formed by the one or more first seats 312, 512 is/are configured to receive the first electrical conductor 406. Otherwise, other features of the apparatus 300 of figures 1 1 to 14 may correspond to features of the apparatus 100 of figures 1 to 11 and are thus not described here in further detail again to avoid repetition.

With reference to figures 15 to 18, a third embodiment of the apparatus 500 according to the first aspect is schematically illustrated. Further, with reference to figures 15 to 18, a third embodiment of the electrical system 600 according to the third aspect of theinvention is schematically illustrated, wherein the electrical system 600 includes the apparatus 500 and electrical conductors 406, 408. Several features of the third embodiment of the apparatus 500 may correspond to features of the second embodiment of the apparatus 300 of figures 11 to 14 and are thus not repeated here. ln a corresponding manner, several features of the third embodiment of the electrical system 600 may correspond to features of the third embodiment of the electrical system 400 of figures 11 to 14 and are thus not repeated here. ln figures 15 and 16, the cover 510 is positioned in the first position. ln figures 17 and 18, the cover 510 is positioned in the second position.

With reference to figures 15 to 18, the apparatus 500 illustrated in figures 15 to 18 differs from the apparatus 300 illustrated in figures 11 to 14 in that the locking arrangement 530 of the interface 502 for locking the cover 510 to the second part 520 comprises, or is supplemented with, a threaded locking arrangement 560. The threaded locking arrangement 560 may include a locking opening 562 formed by one 510, 520 of the cover 510 and second part 520 and may include a threaded element 564, for example a screw or bolt. One 510, 520 of the cover 510 and second part 520 may be configured to hold the threaded element 564. The threaded locking arrangement 560 may also include a threaded nut 566. The threaded element 564 may be configured to engage the locking opening 562 and the threaded nut 566 to lock the cover 510 to the second part 520. ln the illustrated embodiment, the threaded locking arrangement 560 is provided at second end portions 538, 540 of the cover 510 and second part 520. Othen/vise, other features of the apparatus 500 of figures 15 to 18 may correspond to features of the apparatus 300 of figures 11 to 14 and are thus not described here in further detail again to avoid repetition. For some embodiments, the snap-on locking arrangement 132 may be excluded from the apparatus 500 of figures 15 to 18, and thus only maintaining the threaded locking arrangement 560 as locking arrangement 530 for locking the cover 510 to the second part With reference to figures 19 and 20, an embodiment of the connection arrangement 700 according to the second aspect of the invention is schematically illustrated, wherein the connection arrangement 700 includes a plurality of apparatuses 300a, 300b according to the second embodiment. However, it is to be understood that the connection arrangement according to other embodiments may include apparatuses according to any one of the other embodiments disclosed above or below. ln figure 19, the covers 310 are positioned in the first position. ln figure 20, the covers 310 are positioned in the second position.

With reference to figures 19 and 20, the interface 302 of a first apparatus 300a of the plurality of apparatuses 300a, 300b is configured to provide a first electrical connection between two electrical conductors 406a, 408a of a first group of electrical conductors 406a, 408a. The interface 302 of a second apparatus 300b of the plurality of apparatuses 300a, 300b is configured to provide a second electrical connection between two electrical conductors 406b, 408b of a second group of electrical conductors 406b, 408b. The first and second groups of electrical conductors 406a, 408a, 406b, 408b may represent DC+ and DC-. Thus, the electrical conductors 406a, 408a, 406b, 408b of one of the first and second groups of electrical conductors 406a, 408a, 406b, 408b may carry, or conduct, DC+ while the electrical conductors 406a, 408a, 406b, 408b of the other one of the first and second groups of electrical conductors 406a, 408a, 406b, 408b may carry, or conduct, DC-. One or more of the first and second apparatuses 300a, 300b may be attachable, mounted, or attached, to a unit 702, for example a case, a box 704, or a container, or any other unit. The unit 702 may be a unit of a vehicle 900 (see figure 21). For example, one or more of the first and second apparatuses 300a, 300b may be attachable, mounted, or attached, to the unit 702 via one or more of the second part 320, the other apparatus 300a, 300b, the first electrical conductor 406a, 406b and the second electrical conductor 408a, 408b.

With reference to figures 19 and 20, also a fourth embodiment of the electrical system 800 according to the third aspect of the invention is schematically illustrated, wherein the electrical system 800 includes the connection arrangement 700 and the electrical conductors 406a, 408a, 406b, 408b.

With reference to figure 21, an embodiment of the vehicle 900 according to the fifth aspect of the invention is schematically illustrated. The vehicle 900 includes one or more of the group of: an apparatus 100, 300, 500 according to any one of theembodiments disclosed above or below; a connection arrangement 700 according to any one of the embodiments disclosed above or below; an electrical system 200, 400, 600, 800 according to any one of the embodiments disclosed above or below; and an embodiment of the vehicle electrical system 950 according to the fourth aspect of the invention described hereinbelow.

With reference to figure 21, the vehicle 900 is illustrated as a tractor vehicle. However, for other embodiments, the vehicle 900 may, for example, be a bus, a truck, a heavy truck, or a car. Other types of vehicles are also possible. The vehicle 900 may be an electric vehicle, EV, for example a hybrid vehicle or a hybrid electric vehicle, HEV, or a battery electric vehicle, BEV.

With reference to figure 21, the vehicle 900 may be a wheeled vehicle, i.e. a vehicle 900 having wheels 902. Only the wheels 902 on the left-hand side of the vehicle 900 are visible in figure 21. lt is to be understood that the vehicle 900 may have fewer or more wheels than what is shown in figure 21. The vehicle 900 may comprise a powertrain 904, for example configured for one of an EV, HEV and BEV. The vehicle 900 may be configured to hold or carry, or may include, one or more electric batteries, one or more electrical battery arrangements and/or one or more electric battery packs 906. The one or more electric batteries, the one or more electrical battery arrangements and/or the one or more electric battery packs 906 may be configured for the propulsion of the vehicle 900. The electrical battery arrangement and/or the electric battery pack 906 may, for example, be attachable to a chassis 908 of the vehicle 900. lt is to be understood that the vehicle 900 may include further unites, components, such as electrical and/or mechanical components, one or more electric machines 910, a combustion engine 912 and other devices required for a vehicle 900, such as for an EV, HEV or BEV.

With reference to figure 21, it may be defined that the powertrain 904 and/or the one or more electric machines 910 is/are configured to propel, or drive, the vehicle 900. lt may be defined that the powertrain 904 includes the one or more electric batteries, the one or more electrical battery arrangements and/or the one or more electric battery packsWith reference to figure 21, also an embodiment of the vehicle electrical system 950 according to the fourth aspect of the invention is schematically illustrated. The vehicle electrical system 950 includes one or more of the group of: an apparatus 100, 300, 500 according to any one of the embodiments disclosed above or below; a connection arrangement 700 according to any one of the embodiments disclosed above or below; and an electrical system 200, 400, 600 according to any one of the embodiments disclosed above or below. For some embodiments, the vehicle electrical system 950 may be a vehicle high voltage system.

With reference to figure 21, it may be defined that the vehicle electrical system 950 is configured for direct current. lt may be described that the vehicle electrical system 950 is configured to transfer direct current. lt may be defined that the vehicle electrical system 950 is configured for a high voltage, such as a voltage above 60 V, for example above 400 V, or above 450 V, such as above 650 V. For example, the vehicle electrical system 950 may be configured for a voltage up to 1500 V and/or for a voltage above 1500 V. The electric power, or the electric current, for example the direct current, of the vehicle electrical system 950 may be transferred at a high voltage, for example at one or more of the voltages levels mentioned above. The vehicle electrical system 950 may be configured to transfer the electric power, or the electric current, at a high voltage, for example at one or more of the voltages levels mentioned above.

With reference to Figure 21, the vehicle electrical system 950 may be electrically connected, or connectable, to the one or more electric batteries, the one or more electrical battery arrangements and/or the one or more electric battery packs 906. lt may be defined that the one or more electric batteries, the one or more electrical battery arrangements and/or the one or more electric battery packs 906 is/are configured for high voltage, for example for one or more of the voltages levels mentioned above. The vehicle electrical system 950 may be configured to electrically connect the one or more electric batteries, the one or more electrical battery arrangements and/or the one or more electric battery packs 906 to the powertrain 904 of the vehicle 900. The vehicle electrical system 950 may be configured to electrically connect the one or more electric batteries, the one or more electrical batteryarrangements and/or the one or more electric battery packs 906 to the one or more electric machines 910 of the vehicle 900. lt may be defined that the vehicle electrical system 950 is configured to transfer the electric power, or the electric current, for example between the one or more electric machines 910 (and/or the powertrain 904) and the one or more electric batteries, the one or more electrical battery arrangements and/or the one or more electric battery packs The present invention is not limited to the above-described embodiments. lnstead, the present invention relates to, and encompasses all different embodiments being included within the scope of the appended independent claim.

Claims

1. An apparatus (100; 300; 500) comprising an interface (102) for providing an electrical connection between two electrical conductors (106, 108), wherein the interface (102) comprises a cover (110) having one or more first seats (112), and a biasing member (114) attached to the cover (110), wherein the first seat (112) is configured to position a first electrical conductor (106) of the two electrical conductors (106, 108), wherein the cover (110) is connectable to a second part (120) having one or more second seats (122) for positioning a second electrical conductor (108) of the two electrical conductors (106, 108), wherein the cover (110) is movable in relation to the second part (120) from a first position to a second position, wherein when the cover (110) is connected to the second part (120) and is in the second position the biasing member (114) is configured to urge one (106, 108) of the two electrical conductors (106, 108) against the other one (106, 108) of the two electrical conductors (106, 108) for electrical contact (126) between the two electrical conductors (106, 108), wherein the first seat (112) is configured to position the first electrical conductor (106) in relation to the second seat (122), and wherein the second seat (122) is configured to position the second electrical conductor (108) in relation to the first seat (112) and wherein the cover (110) is lockable in the second position to maintain the second position of the cover (110).

2. An apparatus (100; 300; 500) according to claim 1, wherein when the cover (110) is connected to the second part (120) and is in the second position the biasing member (114) is configured to urge the first electrical conductor (106) against the second electrical conductor (108) for electrical contact (126) between the two electrical conductors (106, 108).

3. An apparatus (100; 300; 500) according to claim 1 or 2, wherein when the cover (110) is connected to the second part (120) and is in the second position the cover (1 10) is configured to cover the electrical contact (126) between the two electrical conductors (106, 108).

4. An apparatus (100; 300; 500) according to any one of the claims 1 to 3, wherein the cover (110) is lockable to the second part (120) to maintain the second position of the cover (110).

5. An apparatus (100; 300; 500) according to any one the claims 1 to 4, wherein the interface (102; 502) comprises a locking arrangement (130; 530) for locking the cover (110; 510) to the second part (120; 520) to maintain the second position of the cover (110; 510), and wherein the locking arrangement (130; 530) comprises one of the group of: v a friction locking arrangement; v a positive locking arrangement; v a bayonet locking arrangement; v a snap-on locking arrangement (132); v a snap-in locking arrangement; v a hook-and-loop locking arrangement; and v a threaded locking arrangement (560).

6. An apparatus (100; 300; 500) according to any one of the claims 1 to 5, wherein when the cover (110) is connected to the second part (120) and is in the second position the cover (110) and the second part (120) together are configured to cover the electrical contact (126) between the two electrical conductors (106, 108).

7. An apparatus (100; 300; 500) according to any one of the claims 1 to 6, wherein the biasing member (114) comprises one of the group of: v an elastic member; v a resilient member; v a spring (116);v a compression spring (116); v a helical spring (116); v a flat spring; v an arc spring; v a leaf spring; v a V-spring; and v a bushing.

8. An apparatus (100; 300; 500) according to any one of the claims 1 to 7, wherein the cover (110) is movable in relation to the second part (120) between the first position and the second position.

9. An apparatus (300; 500) according to any one of the claims 1 to 8, wherein the one or more first seats (312) forms/form an opening (358) of the cover (310), and wherein the opening (358) of the cover (310) is configured to allow therethrough the first electrical conductor (406).

10. An apparatus (100; 300; 500) according to any one of the claims 1 to 9, wherein the interface (102) comprises an indicator (142) for indicating sufficient or insufficient contact between the two electrical conductors (106, 108).

11. An apparatus (100; 300; 500) according to claim 10, wherein the indicator comprises an indication opening (144) formed by the cover (110), and a protrusion (146) indirectly or directly attached to the biasing member (114), wherein the protrusion (146) is movable in relation to the cover (110), and wherein the protrusion (146) is configured to extend through the indication opening (144).

12. A connection arrangement (700) comprising a plurality of apparatuses (300a; 300b) according to any one of the claims 1 to 11,wherein the interface (302) of a first apparatus (300a) of the plurality of apparatuses (300a; 300b) is configured to provide a first electrical connection between two electrical conductors (406a, 408a) of a first group of electrical conductors (406a, 408a), and wherein the interface (302) of a second apparatus (300b) of the plurality of apparatuses (300a; 300b) is configured to provide a second electrical connection between two electrical conductors (406b, 408b) of a second group of electrical conductors (406b, 408b).

13. An electrical system (200; 400; 600; 800) comprising one or more of the group of: v an apparatus (100; 300; 500) according to any one of the claims 1 to 11; and v a connection arrangement (700) according to claim 12, wherein the electrical system (200; 400; 600; 800) comprises the electrical conductors (106; 108; 406a, 408a, 406b, 408b).

14. A vehicle (900) comprising one or more of the group of: v an apparatus (100; 300; 500) according to any one of the claims 1 to 11; v a connection arrangement (700) according to claim 12; v an electrical system (200; 400; 600; 800) according to claim 13.