Bus bar unit

Abstract

The invention relates to an aluminum bus bar unit (100) for electrical current transmission, comprising a bus bar body (101), a stabilizing structure (103) and a connection unit (105) for electrical and mechanical connection of the bus bar unit (100), the bus bar body (101) comprising a cavity structure (107) having at least one cavity (109) extending along a longitudinal axis (L) of the bus bar body (101), wherein the stabilizing structure (103) comprises at least one insertion element (111) which is at least partially inserted into the at least one cavity (109), and wherein the stabilizing structure (103) has a higher mechanical rigidity than the bus bar body (101), and wherein the connecting unit (105) is fixed at the connecting end (113) of the bus bar body (101) by means of a press connection (115).

Description

Technical Field

[0001] This invention relates to an aluminum busbar unit for current transmission. Background Technology

[0002] Busbar units are known from the prior art, particularly aluminum busbar units with cavity structures. Summary of the Invention

[0003] The purpose of this invention is to provide an improved busbar unit with a cavity structure.

[0004] This objective is achieved by an aluminum busbar unit. Advantageous improvements are the subject of the preferred embodiment.

[0005] According to one aspect, an aluminum busbar unit for current transmission is provided, the aluminum busbar unit including a busbar body, a stabilizing structure, and a connecting unit for electrical and mechanical connection of the busbar unit, wherein the busbar body includes a cavity structure having at least one cavity extending along a longitudinal axis of the busbar body, wherein the stabilizing structure includes at least one insertion element at least partially inserted into the at least one cavity, wherein the stabilizing structure has higher mechanical rigidity than the busbar body, and wherein the connecting unit is fixed to a connecting end of the busbar body by means of a press connection.

[0006] This provides the following technical advantages: an improved aluminum busbar unit for current transmission can be provided. According to the invention, the aluminum busbar unit includes a busbar body having a cavity structure with at least one cavity. The structural stability of the busbar body is significantly adversely affected by the cavity structure and the aluminum material of the busbar body.

[0007] The electrical connectivity between the busbar body and the connecting unit connected to the busbar body via press-fit is thus greatly adversely affected, because the busbar body yields significantly when pressure is applied to achieve the press-fit connection due to its low structural stiffness, and therefore the quality of the cold weld between the connecting unit and the busbar body, which can be achieved via press-fit connection, is reduced.

[0008] The stable structure according to the invention, having a higher mechanical stiffness than the busbar body, enables, in particular, the reduction or prevention of collapse of at least one cavity due to pressure applied to achieve a press-fit connection, particularly by means of at least one insertion element at least partially inserted into at least one cavity. With the aid of this rigid stable structure, the mechanical stiffness of the busbar body can thus be increased, at least in the region of the connection end, where the connection unit is intended to be press-fitted to the busbar body.

[0009] The increased rigidity, and in particular the insertion element inserted into at least one cavity, allows the busbar body to more robustly counteract the pressure applied by the press connection in the region of the connection end, thereby improving the quality of the cold weld between the busbar body and the connection unit, as well as the associated conductivity between the busbar body and the connection unit.

[0010] In addition, the cavity structure in the manifold body allows coolant to be inserted into the cavity structure to thermally cool the manifold body during operation.

[0011] According to one embodiment, the cavity structure includes multiple cavities.

[0012] This allows for the following technical advantages: the multiple cavities in the cavity structure enable better penetration of the busbar body. When the cavity structure is filled with the coolant, this allows for improved cooling performance.

[0013] The volume of the cavity structure here can be between 30% and 70% of the volume of the entire busbar body.

[0014] According to one embodiment, the stabilization structure includes a plurality of insertion elements.

[0015] This allows for the following technical advantages: further stabilization or increased stiffness of the busbar body can be achieved through multiple inserted elements of a stable structure.

[0016] According to one embodiment, the insertion element is arranged in each of the cavities of the cavity structure.

[0017] This allows for the following technical advantages: further increases in the rigidity of the manifold body are possible in the connection end region. Since the insert elements are arranged in each cavity of the cavity structure, a fluid-tight closure of the manifold body through the stabilization structure is also possible. This prevents coolant leakage when the cavity structure is filled with coolant.

[0018] According to one embodiment, the cavity structure includes a through channel and a plurality of peripheral cavities arranged radially around the through channel in at least part.

[0019] This allows for better penetration of the busbar body into the cavity structure. The peripheral cavity's arrangement around the periphery of the through channel ensures uniform pressure distribution during pressurized connection.

[0020] According to one embodiment, the peripheral cavity at the connecting end of the manifold body is at least partially plastically deformed by a press connection, wherein the peripheral cavity is at least partially fluidly closed by plastic deformation.

[0021] This allows for the following technical advantages: achieving additional sealing of the manifold body through plastic deformation.

[0022] According to one embodiment, at least one insertion element is inserted into the through channel.

[0023] This allows for the following technical advantages: by inserting at least one insertion element into the through channel, pressure can be better distributed evenly, and an improved pressure connection can be achieved in connection with this.

[0024] According to one embodiment, the through channel is constructed at the center of the busbar body.

[0025] This allows for the following technical advantages: the through channel is centrally formed within the busbar body, and pressure distribution is improved through pressure connection. Because the through channel is centrally located and the peripheral cavities are positioned around it, the cavity structure is symmetrically constructed, resulting in a uniform pressure distribution directed towards the center of the busbar body. This enables uniform contact between the connecting unit and the busbar body and avoids asymmetrical deformation of the busbar body.

[0026] According to one embodiment, the through channel has a larger cross-section than the peripheral cavity.

[0027] This achieves the following technical advantages: the smaller cross-section of the peripheral cavity further enhances the structural stability of the busbar in the edge region. In this way, the pressure connection and associated electrical contact between the busbar body and the connecting unit can be improved.

[0028] According to one embodiment, at least one cavity has a cross-section with the following shapes: circular, elliptical, triangular, or polygonal.

[0029] This allows for the following technical advantages: the various cross-sections of the cavity enable optimal penetration of the manifold body through the cavity structure. Furthermore, the manifold body can be optimally cooled when the cavity structure is filled with coolant.

[0030] According to one embodiment, the cross-section of at least one insertion element has the same shape and / or size as the cross-section of at least one cavity.

[0031] This allows for the following technical advantages: a perfect fit between the insert element and the cavity is possible through the use of an insert element with a cross-section having the same shape and / or size as the cavity. In turn, this improves the structural rigidity of the busbar body and enhances the sealing of the cavity structure by a stabilizing structure when the cavity structure is filled with coolant.

[0032] According to one embodiment, at least one insert element is strip-shaped.

[0033] This allows for the following technical advantages: the strip design of the insert elements enables better insertion into the corresponding cavities. The slender design of the insert elements allows for varying insertion depths, thereby increasing the structural rigidity of the busbar body by correspondingly inserting the insert elements through the extended area at the connection end.

[0034] According to one embodiment, the stabilizing structure includes a head structure connected to at least one insert element, wherein the diameter of the head structure is greater than the diameter of the at least one insert element, and wherein the head structure abuts against the end surface of a connecting end of the busbar body.

[0035] This allows for the technical advantage of improved stability of the stabilized structure achieved through the head structure. If the stabilized structure comprises multiple insert elements, the head structure enables the insertion of multiple insert elements into their respective cavities using a single insertion process.

[0036] According to one embodiment, the stabilizing structure at least partially fluid-closes the connection end of the manifold body.

[0037] This enables the following technical advantages: achieving fluid seals with further improvements in cavity structure.

[0038] According to one embodiment, the stabilization structure is made of a conductive material.

[0039] This achieves the following technical advantages: further improvement in the electrical contact connection between the busbar body and the connecting unit. The stable structure here maintains both mechanical and electrical contact with both the busbar body and the connecting unit.

[0040] According to one embodiment, the stabilizing structure is made of plastic and manufactured using a 3D printing method.

[0041] This enables the simplified fabrication of stabilized structures with the aid of 3D printing methods. This is particularly advantageous in complex cavity structures with multiple cavities of different configurations and in corresponding stabilized structures with multiple insert elements.

[0042] According to one embodiment, coolant for passively cooling the busbar body is formed in at least one cavity of the cavity structure.

[0043] This enables the passive cooling of the busbar body via a coolant. This removes heat generated during current conduction through the busbar body, further improving its current conductivity.

[0044] According to one embodiment, the coolant is in the form of a phase change storage material.

[0045] This allows for the following technical advantages: effective removal of heat generated in the busbar body during operation can be achieved using phase change storage materials. Furthermore, the corresponding coolant can be disposed within the cavity structure without mass transfer.

[0046] According to one embodiment, the crimp connection is a type of crimped connection, and / or the crimp connection is achieved by an EMPT (electromagnetic pulse technology) method.

[0047] This enables the following technical advantages: it provides an effective pressure connection that allows for robust mechanical and efficient electrical connections between the busbar body and the connecting unit.

[0048] According to one embodiment, the connection unit includes a receiving sleeve arranged around the connection end of the busbar body, wherein the stabilization structure is held in the cavity structure by the receiving sleeve.

[0049] This allows for the following technical advantages: enabling a robust connection between the connecting unit and the manifold. Since the stabilizing structure is held within the cavity structure, the fluid seal of the cavity structure is further improved. Furthermore, the mechanical connection and optionally electrical connection between the stabilizing structure and the connecting unit are ensured by the receiving sleeve.

[0050] According to one embodiment, the receiving sleeve closes the connection end of the busbar body that is fluidly connected to the cavity structure.

[0051] This enables the following technical advantages: achieving further improved fluid sealing of the manifold body.

[0052] According to one embodiment, the connecting unit is in the form of a cable shoe.

[0053] This enables the following technical advantages: providing efficient and widely usable connection units.

[0054] According to one embodiment, the connecting unit is made of copper, and / or the stabilizing structure is made of copper or steel.

[0055] This allows for the following technical advantages: both the connecting unit and the stabilization structure can provide optimal electrical efficiency and desired mechanical rigidity.

[0056] According to one embodiment, the receiving sleeve has two relatively open ends, wherein the fluid sealing closure of the manifold body is caused by the head structure of the stabilizing structure.

[0057] This allows for the following technical advantages: the use of technically simple connection units, and the ability to achieve a fluid-tight seal of the manifold body despite this.

[0058] According to one aspect, a method for manufacturing a busbar unit according to any one of the foregoing embodiments is provided, comprising:

[0059] A busbar body (101) with a cavity structure and a stabilizing structure is provided.

[0060] At least one insertion element of the stabilization structure is inserted into at least one cavity of the cavity structure;

[0061] The connecting end of the busbar body is axially covered by the connecting unit; and

[0062] The connecting unit is fixed to the busbar body by press-fitting.

[0063] In this way, an improved method for manufacturing busbar units with the aforementioned technical advantages can be provided.

[0064] According to one embodiment, the method further includes:

[0065] At least one cavity is filled with a phase change material.

[0066] This enables the following technical advantages: cooling of the busbar body through phase change materials.

[0067] According to one embodiment, a stabilizing structure provides a reaction force axially opposite to the compressive force of the pressure connection.

[0068] This allows for improved press-fit connections, and has the following effect: the cold welds caused by press-fit connections between the busbar body and the connecting unit are improved due to the more robust structure of the busbar body and the stabilizing structure. Attached Figure Description

[0069] The invention will now be explained in more detail with the aid of the accompanying drawings, in which:

[0070] Figure 1 A schematic diagram of an aluminum busbar unit according to one embodiment is shown.

[0071] Figure 2 Another schematic diagram of an aluminum busbar unit according to another embodiment is shown.

[0072] Figure 3 A schematic diagram of the busbar body of an aluminum busbar unit according to one embodiment is shown.

[0073] Figure 4 A schematic diagram of a busbar body with a stable structure having an aluminum busbar unit according to one embodiment is shown.

[0074] Figure 5 A schematic cross-sectional view of an aluminum busbar unit according to one embodiment is shown.

[0075] Figures 6A-6F Several schematic cross-sectional views of an aluminum busbar unit according to several embodiments are shown;

[0076] Figure 7 A perspective schematic diagram of two aluminum busbar units according to one embodiment is shown. Detailed Implementation

[0077] Figure 1 A schematic diagram of an aluminum busbar unit 100 according to one embodiment is shown.

[0078] According to the present invention, the aluminum busbar unit 100 includes a busbar body 101, a stabilizing structure 103, and a connecting unit 105. In the illustrated embodiment, the busbar body 101 is cylindrical and includes a connecting end 113 having an end surface 119.

[0079] Furthermore, a cavity structure 107 having at least one cavity 109 is formed in the busbar body 101. The at least one cavity 109 extends along the longitudinal axis L of the busbar body 101.

[0080] In the illustrated embodiment, cavity structure 107 includes a plurality of cavities 109.

[0081] In the illustrated embodiment, the cavity structure 107 includes a through channel 121 and a plurality of peripheral cavities 123 arranged around the through channel 121. In the illustrated embodiment, the through channel 121 is formed at the center of the busbar body 101.

[0082] According to the invention, the stabilization structure 103 includes at least one insertion element 111, which is at least partially inserted into at least one cavity 109 of the cavity structure 107.

[0083] According to the present invention, the stabilizing structure 103 has higher mechanical hardness and / or rigidity than the busbar body 101.

[0084] In the illustrated embodiment, the insertion element 111 is strip-shaped. Furthermore, at least one insertion element 111 is inserted into the central through-channel 121.

[0085] In order to Figure 1 As better shown, the insertion element 111 is not fully pushed into the through channel 121, and protrudes beyond the end surface 119 of the connection end 113 of the busbar body 101. However, the insertion element 111 can also be fully pushed into the corresponding cavity 109, and can terminate in alignment with the end surface 119 of the connection end 113.

[0086] In the illustrated embodiment, the connection unit 105 includes a receiving sleeve 125 and a connecting element 127. The connection unit 105 can be pushed onto the busbar body 101 via the receiving sleeve 125.

[0087] According to the present invention, the connecting unit 105 is connected to the busbar body 101 via a press connection. For better illustrative purposes, in Figure 1 The busbar body 101 and the connecting unit 105 are shown in an unconnected state.

[0088] By means of the stabilizing structure 103 and, in particular, at least one insertion element 111, positioned in at least one cavity 109 of the cavity structure 107, the structural strength of the busbar body 101 in the region of the connection end 113 can be increased, and thus an improved press-fit connection and improved mechanical and electrical contact connection can be achieved between the busbar body 101 and the receiving sleeve 125 of the connection unit 105. In the illustrated embodiment, the connection unit 105 is in the form of a cable shoe.

[0089] According to one embodiment, the stabilization structure 103, including the insertion element 111, may be formed of a conductive material, such as copper or steel. Alternatively, the stabilization structure 103 may be manufactured from plastic using a 3D printing method.

[0090] According to one embodiment, the cavity 109 of the cavity structure is filled with a coolant for providing passive cooling of the busbar body 101. The coolant may be, for example, in the form of a phase change material. For illustrative purposes, Figure 1 The manifold body 101 without coolant is shown.

[0091] In the illustrated embodiment, the receiving sleeve 125 of the connecting unit 105 is designed as a sleeve closed on one side. When the connecting unit 105 is positioned on the busbar body 101 and the connecting unit 105 is fixed to the busbar body 101 by means of the aforementioned press-fit connection, the receiving sleeve 125 can thus be configured to fluidly seal the busbar body 101 and the cavity structure 107 formed therein.

[0092] According to one embodiment, a press-fit connection is used, whereby the receiving sleeve 125 of the connection unit 105 is connected to the busbar body 101 via it, in the form of a mechanical press-fit connection. Alternatively, the press-fit connection can be achieved using the EMPT (Electromagnetic Pulse Technique) method.

[0093] According to one embodiment, the insertion element 111 can be designed in a way that makes simple insertion into the cavity 109 possible. For example, the insertion element 111 can be conical or may include an insertion aid by which the insertion element 111 can be pushed into the cavity 109.

[0094] Figure 2Another schematic diagram of an aluminum busbar unit 100 according to another embodiment is shown.

[0095] Figure 2 The embodiments in the example are based on Figure 1 Examples are shown in the text.

[0096] In the illustrated embodiment, the stabilization structure 103 further includes a head structure 117 connected to at least one insertion element 111. The head structure 117 here includes a diameter larger than at least one insertion element 111, and is configured here to cover the end surface 119 of the connection end 113 of the busbar body 101 when at least one insertion element 111 is fully inserted into the corresponding cavity 109.

[0097] The fluid seal of the manifold body 101, and especially the cavity structure 107, can therefore be achieved via the head structure 117 of the stabilizing structure 103.

[0098] In the illustrated embodiment, the receiving sleeve 125 of the connecting unit 105 is designed as an open sleeve with two open ends.

[0099] Figure 2 The embodiment of the stabilization structure 103 in the middle can also be compared with Figure 1 The embodiment combination of the connection unit 105.

[0100] Figure 3 A schematic diagram of the busbar body 101 of an aluminum busbar unit 100 according to one embodiment is shown.

[0101] Figure 3 Clearly shown Figure 1 and Figure 2 The cavity structure of the embodiment. A through channel 121 is formed at the center of the busbar body 101, and a peripheral cavity 123 is circumferentially positioned around the central through channel 121.

[0102] In the illustrated embodiment, the through channel 121 has a circular cross-section. In contrast, the plurality of peripheral cavities 123 have trapezoidal cross-sections in the broadest sense. Furthermore, the through channel 121 is formed with a cross-section much larger than that of the peripheral cavities 123.

[0103] The number and arrangement or size ratio between the peripheral cavity 123 and the through channel 121 shown are merely exemplary and may differ from the example shown.

[0104] When a press connection is performed to secure the connecting unit 105 to the manifold body 101, the peripheral cavity 123 of the cavity structure 107 may undergo partial plastic deformation due to the pressure applied to the receiving sleeve 125 to induce the press connection. Through this plastic deformation, the peripheral cavity 123 may be at least partially fluidly closed.

[0105] Figure 4 The busbar body 101 shown corresponds to Figure 3 Examples are shown in the text.

[0106] Another embodiment of the stabilizing structure 103 is also shown adjacent to the busbar body 101. The stabilizing structure 103 shown includes a plurality of insertion elements 111. The insertion elements 111 are correspondingly strip-shaped and fixed to the plate-like head structure 117 shown.

[0107] In the illustrated embodiment, the stabilization structure 103 has a central insertion element 129 and a plurality of peripheral insertion elements 131, the central insertion element 129 being centrally positioned on the plate-like head structure 117, and the plurality of peripheral insertion elements 131 being arranged around the central insertion element 129.

[0108] The arrangement of the plurality of insertion elements 111 here corresponds to the arrangement of the plurality of cavities 109 of the cavity structure 107. The stabilization structure 103 here has a corresponding insertion element 111 for each cavity 109 of the cavity structure 107.

[0109] Insertion element 111 is designed such that its cross-section corresponds in shape and size to the cross-section of cavity 109 of cavity structure 107. The central insertion element 129 is designed to have a larger circular cross-section than the peripheral insertion element 131, similar to the peripheral cavity 123, corresponding to the through channel 121.

[0110] Figure 4 A schematic diagram of a busbar body 101 having a stable structure 103 is shown for an aluminum busbar unit 100 according to one embodiment.

[0111] from Figure 4 It is not immediately apparent that the peripheral insertion element 131 has a roughly trapezoidal cross-section similar to that of the peripheral cavity 123.

[0112] In the illustrated embodiment, the stabilization structure 103 is manufactured from plastic using a 3D printing method. In complex stabilization structures 103 with various different designs of insert elements 111, 3D printing can be an advantageous manufacturing method.

[0113] Figure 5 A schematic cross-sectional view of an aluminum busbar unit 100 according to one embodiment is shown.

[0114] Figure 5An aluminum busbar unit 100 according to the invention in an assembled state is shown. For this purpose, a stabilizing structure 103 is formed at the connecting end 113 of the busbar body 101. In the illustrated embodiment, for simplicity of illustration, the cavity structure 107 includes only one cavity 109. Therefore, the stabilizing structure 103 also has only one insertion element 111 inserted into one cavity 109. In the illustrated embodiment, according to... Figure 2 and Figure 4 In one embodiment, the stabilization structure 103 has a head structure 117. The insertion element 111 is fully inserted into the cavity 109 such that the head structure 117 abuts against the end surface 119 of the connection end 113 of the busbar body 101, and thus fluidly closes the cavity structure 107.

[0115] In the illustration, the busbar body 101 has a diameter D1, while the cavity 109 shown has a diameter D2.

[0116] In the region of the connection end 113, the receiving sleeve 125 is press-fitted to the busbar body 101, the diameter D1 of the busbar body 101 being compressed to a reduced diameter D3 due to the axial pressure on the receiving sleeve 125, which is required to achieve the press-fit connection.

[0117] By inserting the insertion element 111 into at least one cavity 109, the diameter D2 of the cavity 109 is substantially unaffected by the pressure connection, and no plastic deformation of the cavity 109 occurs due to the insertion element 111.

[0118] Figures 6A-6F Several schematic cross-sectional views of an aluminum busbar unit 100 according to several embodiments are shown.

[0119] exist Figures 6A-6F Various embodiments of the busbar body 101, and in particular various embodiments of the cavity structure 107, are shown. For this purpose, Figures 6A-6F A schematic front cross-sectional view of various embodiments of the busbar body 101 is shown.

[0120] Figure 6A The embodiments are based on Figures 1 to 4 The embodiments are shown, as well as a cavity structure 107 having a central through channel 121 and a plurality of peripheral cavities 123 arranged around the central through channel 121.

[0121] However, with Figures 1 to 4 Unlike other embodiments, in the illustrated embodiment, all cavities 109 shown have a circular cross-section.

[0122] Figure 6BThe cavity structure further shows multiple cavities 109. Each cavity 109 here has a circular cross-section of the same size and is arranged in a symmetrical, intersecting manner.

[0123] exist Figure 6C , Figure 6D The cavity structure 107 shown in the diagram has multiple cavities 109 with circular cross-sections. In the illustrated embodiment, each cavity 109 has a different cross-sectional size. Furthermore, the illustrated cavities 109 are arranged asymmetrically within the busbar body 101.

[0124] and Figure 6A The embodiments 6B, 6D, 6E, and 6F differ, wherein the busbar body 101 has a circular cross-section in each case. Figure 6C In one embodiment, the busbar body 101 has an octagonal cross-section. Alternatively, the busbar body 101 may also have a polygonal cross-section with a different construction.

[0125] exist Figure 6E In one embodiment, cavity structure 107 has only one cavity 109. Here, cavity 109 has a helical cross-section.

[0126] Figure 6F A cavity structure with multiple cavities 109 arranged around the center of the busbar body 101 is shown. Each cavity 109 here has a triangular cross-section of the same size.

[0127] As an alternative to the illustrated embodiment, cavity 109 may have an elliptical or polygonal cross-section designed in any other way.

[0128] The design or arrangement of the various cavities 109 of the cavity structure 107 may be determined depending on the application and with consideration of filling the cavity structure 107 with the aforementioned coolant. Depending on the application of the busbar unit 100, the corresponding cavity structure 107 may be configured with regard to the preferred rigidity of the busbar body 101 and / or with regard to the optimized cooling effect of the coolant arranged in the cavities 109 of the cavity structure 107.

[0129] The cavity structure 107 here can have a volume that occupies 30% to 70% of the volume of the entire busbar body 101.

[0130] Figure 7 A perspective schematic diagram of two aluminum busbar units 100 according to one embodiment is shown.

[0131] Figure 7Two aluminum busbar units 100 according to the invention are shown in an assembled state. At the connecting end 113, the connecting unit 105 is fixed to the busbar body 101 by means of a press-fit connection 115. In the illustrated embodiment, the press-fit connection 115 is designed as a segmented radial press-fit connection. The receiving sleeve 125 here has a slotted area 133 achieved by mechanical pressure during the press-fit connection process.

[0132] List of reference numerals

[0133] 100 busbar units

[0134] 101 Busbar Main Body

[0135] 103 Stable Structure

[0136] 105 Connection Unit

[0137] 107 cavity structure

[0138] 109 chambers

[0139] 111 Insertion element

[0140] 113 Connection end

[0141] 115 Crimping Connection

[0142] 117 Head Structure

[0143] 119 end surface

[0144] 121 Central Through Passage

[0145] 123 Peripheral cavity

[0146] 125 receiving sleeve

[0147] 127 Connecting elements

[0148] 129 Center Insertion Element

[0149] 131 Peripheral Insertion Components

[0150] 133 Recessed area

[0151] L longitudinal axis

[0152] D1 Diameter of the busbar body

[0153] Diameter of cavity D2

[0154] D3 Diameter of the busbar body

Claims

1. An aluminum busbar unit (100) for current transmission, comprising a busbar body (101), a stabilizing structure (103), and a connecting unit (105) for electrical and mechanical connection of the busbar unit (100), wherein the busbar body (101) comprises a cavity structure (107) having at least one cavity (109), wherein the stabilizing structure (103) comprises at least one insertion element (111) at least partially inserted into at least one cavity (109), wherein the stabilizing structure (103) has a mechanical stiffness at least equal to that of the busbar body (101), and wherein the connecting unit (105) axially overlaps with the stabilizing structure (103) at the connecting end (113) of the busbar body (101) and is fixed by means of a press connection (115).

2. The busbar unit (100) according to claim 1, wherein the cavity structure (107) comprises a plurality of cavities (109).

3. The busbar unit (100) according to claim 2, wherein the stabilization structure (103) includes a plurality of insertion elements (111).

4. The busbar unit (100) according to claim 3, wherein the insertion element (111) is arranged in each cavity (109) of the cavity structure (107).

5. The manifold unit (100) according to any one of the preceding claims, wherein the cavity structure (107) includes a through channel (121) and a plurality of peripheral cavities (123) arranged radially at least partially around the through channel (121).

6. The manifold unit (100) according to claim 5, wherein the peripheral cavity (123) at the connecting end (113) of the manifold body (101) is at least partially plastically deformed by the press connection (115), and wherein the peripheral cavity (123) is at least partially fluidly closed by the plastic deformation, and / or wherein at least one insertion element (111) is inserted into the through channel (121).

7. The busbar unit (100) according to any one of claims 5 to 6, wherein the through channel (121) is formed at the center of the busbar body (101).

8. The manifold unit (100) according to any one of claims 5 to 7, wherein the through channel (121) has a larger cross-section than the peripheral cavity (123).

9. The busbar unit (100) according to any one of the preceding claims, wherein at least one cavity (109) has a cross-section of the following shape: circular, elliptical, triangular, polygonal, and / or wherein at least one insert element (111) has a cross-section of the same shape and / or size as the cross-section of at least one cavity (109), and / or wherein at least one insert element (111) is strip-shaped.

10. The busbar unit (100) according to any one of the preceding claims, wherein the stabilizing structure (103) includes a head structure (117) connected to at least one insertion element (111), wherein the diameter of the head structure (117) is greater than the diameter of at least one insertion element (111), and / or wherein the head structure (117) abuts against the end surface (119) of the connection end (113) of the busbar body (101), and / or wherein the stabilizing structure (103) at least partially fluidly closes the connection end (113) of the busbar body (101), and / or wherein the stabilizing structure (103) is made of a conductive material.

11. The busbar unit (100) according to any one of claims 1 to 10, wherein the stabilization structure (103) is made of plastic and manufactured by a 3D printing method.

12. The busbar unit (100) according to any one of the preceding claims, wherein a coolant for cooling the busbar body (101) is formed in at least one cavity (109) of the cavity structure (107), and wherein the coolant is in the form of a phase change storage material.

13. The busbar unit (100) according to any one of the preceding claims, wherein the press connection (115) is in the form of a press-fit connection (115), and / or wherein the press connection (115) is implemented by an EMPT (electromagnetic pulse technology) method, and / or wherein the connection unit (105) includes a receiving sleeve (125), wherein the receiving sleeve (125) is arranged around the connection end (113) of the busbar body (101), and wherein the stabilization structure (103) is held in the cavity structure (107) by the receiving sleeve (125), and / or Alternatively, the receiving sleeve (125) fluid-tightly seals the connection end (113) of the busbar body (101) with the cavity structure (107), and / or the connection unit (105) is in the form of a cable shoe, and / or the connection unit (105) is made of copper, and / or the stabilization structure (107) is made of copper or steel, and / or the receiving sleeve (125) has two relatively open ends, and the fluid-tight closure of the busbar body (101) is achieved via the head structure (117) of the stabilization structure (103).

14. A method for manufacturing a busbar unit (100) according to any one of claims 1 to 13, comprising: A busbar body (101) with a cavity structure (107) and a stabilizing structure (103) is provided. At least one insertion element (111) of the stabilization structure (103) is inserted into at least one cavity (109) of the cavity structure (107); The connecting end (113) of the busbar body (101) is axially covered by the connecting unit (105); and The connecting unit (105) is fixed to the busbar body (101) via a press connection.

15. The method of claim 14, wherein the press connection is in the form of a press-fit connection (115), and / or wherein the press connection (115) is implemented by an EMPT (electromagnetic pulse technology) method, and / or wherein the method further comprises: At least one cavity (109) is filled with a phase change material, and / or the busbar body (101) is fluid-sealed by the connecting unit.

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