Energy supply system for supplying energy into road vehicle

Abstract

The invention relates to an energy supply system (1) for supplying electrical energy into an electrically driven road vehicle (2) during travel on a lane (S) of a road segment. The system comprises a two-pole overhead line installation (6) with contact lines (61) for providing electrical energy, which contact lines are arranged parallel to one another along the road section at a contact line distance (D1) from one another above the lane (S) at a contact line height (H). The invention further comprises a current collector (4) supported on the road vehicle (2), comprising two contact element groups (42) supported on an articulated support bar (41), a sensor device (44) for detecting a contact line (61) supported in an end section (E) of a working region (A) of the contact element groups (42), and a control unit (45) for controlling the lifting device (43), the sensor device (44) is designed to trigger the lowering of the support rod (41) when the sensor device (44) detects the contact line (61) supported in the end section (E). According to the invention, at least one of the contact lines (61) has a section (68) extending transversely outwards in a line breaking section (F) of a road section provided for releasing the electrical contact between the contact element group (42) and the contact lines (61), and the distance (D8) between the contact lines (61) measured transversely to the direction of travel (V) of the lane (S) increases along the section (68) in the direction of travel (V).

Description

[0001] The invention relates to an energy supply system according to the preamble of claim 1 for supplying electrical energy to an electric or hybrid-electric road vehicle during driving on an electrified lane of a road section.

[0002] Such an energy supply system is known, for example, from the publication DE102017215135A1. It comprises a two-pole overhead line facility with a contact wire designed as an electrical destination and return conductor for providing electrical energy. The contact wires are arranged parallel to each other at a contact wire distance along the highway section at a contact wire height above the lane. It also comprises a collector supported on a highway vehicle with an erectable support rod. Two contact member groups are supported on the support rod, which can be erected by a lifting device to close the electrical contact between the contact member group and the contact wire. A sensor device detects when the contact wire is supported in the end section of the working area of ​​the contact member group. The control unit for controlling the lifting device is designed to trigger the lowering of the support rod when the sensor device detects the contact wire supported in the end section, so as to release the electrical contact between the contact member group and the contact wire.

[0003] The sensor device known from patent document DE102017215135A1 has, for example, end contact elements at both ends of the contact member group. The end contact element pair arranged at the same end is connected to a measuring device, by means of which an electrical state variable can be detected. Based on the detected state variable, it is determined whether the end contact element pair is in contact with the overhead line. Thus, if the steering accuracy leads to or due to an evasive or overtaking maneuver of the road vehicle, the contact line is located at the end section of the working area of ​​the contact member group, the current collector is lowered.

[0004] For economic or structural reasons, overhead wire installations cannot be implemented on road sections over the entire network. Therefore sections with electrified lanes alternate with sections without electrified lanes. Before a road vehicle reaches the end of an electrified section, the collector must be disconnected in an electrically safe manner to avoid arcing or damage caused by the collector not being disconnected or being disconnected suddenly. For this purpose, road vehicle drivers must be alerted to the end of the overhead wire installation by means of signs and are required to disconnect the collector.

[0005] If you do not pay attention to the signs, Figure 2 In the overhead line facility 6 of FIG. 1 , it is known that, on the broken wire section F of the highway section S, the contact wire 61 is raised in a targeted manner from its predetermined contact wire height H to a contact wire height HS with a safety margin. The size of the safety margin is designed to be higher than the maximum working height of the collector. Then, the longitudinal chain mechanism consisting of the supporting cable 62, the hanger device 63 and the contact wire 61 is transversely guided to an anchor point or a tensioning device beside the roadway.

[0006] This solution presupposes a sufficient distance between the end of the overhead line facility 6 and the next height-limiting structure in the direction of travel V, so that there is enough time to disconnect the collector 4. In addition, a large available structural space is required for the chain mechanisms 61, 62, 63, and a corresponding clear space is required for the pantograph 4. Therefore, this principle cannot be used in tunnel structures and other areas with limited height. Another disadvantage is that the collector 4 automatically starts to disconnect only after reaching its maximum operating height and still receives the entire traction current from the contact wire 61. As a result, an arc is formed when breaking contact with the contact wire 61 and further leads to increased wear, thinning and reduced service life of the contact wire 61.

[0007] Therefore, the technical problem to be solved by the present invention is to provide an energy supply system of the above type, which overcomes the disadvantages of the prior art.

[0008] This technical problem is solved according to the invention by an energy supply system having the features described in the characterizing part of claim 1. Therefore, in a broken wire section of a highway section provided for releasing the electrical contact between a contact component group and a contact wire, at least one of the contact wires has a section extending laterally outward, wherein the distance between the contact wires measured transversely to the driving direction of the lane increases along the section in the driving direction. At least one section can extend laterally outward in an arc, polygon or straight line so as to be away from another contact wire. The height of the contact wire remains unchanged here. When extending in a straight line, a section of the contact wire can extend laterally outward at an acute angle to the driving direction, i.e. in a wedge or V shape. Through the laterally outward extending section of the contact wire, when the highway vehicle controls the direction according to the lane, the contact wire must be located on the outer end section of the contact component group in contact with the contact wire, which leads to automatic disconnection of the contact through the broken wire of the collector. Another contact wire can extend straight and parallel to the driving direction. It is not necessary to pay attention to the indication signs or the limitations caused by the structural space of the prior art.

[0009] In an advantageous embodiment of the energy supply system according to the invention, in the wire breaking section, the two contact wires each have a section extending transversely outwards, wherein the distance between the contact wires measured transversely to the direction of travel of the roadway increases along this section in the direction of travel. The two contact wires can extend parallel to the direction of travel to this section, and the contact wires in this section extend symmetrically from the center of the roadway laterally outwards away from each other. Independent of the relative transverse position of the road vehicle with respect to the center of the roadway, the contact wires of at least one or both sections are located at the outer end sections of the working area of ​​one or both contact member groups, thereby triggering the lowering process of the support frame with greater safety.

[0010] In another advantageous embodiment of the energy supply system according to the present invention, the section extending laterally outward is formed by bending the contact wire at the deflection point of the overhead line facility. The deflection point of the overhead line facility can be formed, for example, by a side-hanging positioner connected to the cantilever of the lateral support device of the overhead line facility, on which the contact wire is fixedly clamped and can be bent from a direction parallel to the travel direction into a direction extending laterally outward. The side-hanging positioner occupies a fixed spatial position and absorbs the force generated by the bending of the contact wire. The contact wire can also be bent at multiple continuous deflection points in the section extending in a polygon. If the two contact wires have symmetrically arranged, laterally extending sections, one or more deflection points can also be formed by the crossbeam connecting the contact wires. The length of the first crossbeam at the beginning of these sections is as large as the distance of the contact wire entering, and at the end of the section extending laterally, the second crossbeam keeps the contact wire at a greater distance. In the case of a polygonal extension of the section, another crossbeam can be arranged between the first and second crossbeams with a gradually increasing length.

[0011] In another advantageous embodiment of the energy supply system according to the present invention, the contact wire branches at a branching point of the overhead line facility into a main branch extending in the direction of travel and a secondary branch forming a laterally outwardly extending section. The contact wire of the secondary branch can be fixed to the contact wire of the main branch by a joint clamp at the branching point. When passing through the broken wire section, the support point of the contact wire of the secondary branch on the working area of ​​the contact member group moves outward in the direction of its outer end section. Correspondingly, in the case of a symmetrical arrangement of the laterally outwardly extending sections, the support points of the contact wire of the secondary branch on the working area of ​​the contact member group move outward in the direction of the corresponding outer end sections. In the broken wire section, it is inevitable that the contact wire is supported on at least one end section, thereby triggering the lowering of the support frame.

[0012] In another advantageous embodiment of the energy supply system according to the invention, the contact wires are connected at opposite branching points by a crossbeam which maintains a predetermined contact wire distance. Relaxation of the contact wires of the laterally directed side branches leads to forces acting on the branching points which move them away from each other in the case of an increase in the normal contact wire distance, which is precisely prevented by the longitudinally stable crossbeam.

[0013] In another advantageous embodiment of the energy supply system according to the invention, the contact wires are connected at opposite branching points by side-mounted positioners of a transverse support device of the overhead line facility which maintain a predetermined contact wire distance. Instead of using the above-mentioned crossbeam, the contact wire distance can also be maintained at the branching point by side-mounted positioners of the transverse support device.

[0014] In another advantageous embodiment of the energy supply system according to the invention, each secondary branch is guided from a corresponding branching point to at least one further transverse support device, at which the secondary branch is held at a contact line distance that is greater than the segment distance between the end segments of the two contact member groups. Reliable detection of one or both contact lines in the preceding, laterally outwardly extending segments of the contact line is achieved by selecting the contact line distance of the secondary branch. In a broken wire segment passed at a lower speed, the contact line of the secondary branch can be guided from the transverse support structure immediately back to the contact line of the main branch and connected thereto by a joint clamp. At higher speeds, the contact line of the secondary branch is first guided on one or more further transverse support structures next to the contact line of the main branch before being connected to each other again. The contact lines of the main branch and the secondary branch of one potential can here be fixed to a common supporting cable by a hanger device and do not necessarily extend parallel to each other.

[0015] In another advantageous embodiment of the energy supply system according to the invention, the load disconnect switch is arranged between the current collector and the vehicle drive of the road vehicle. Here, the control unit for controlling the load disconnect switch is designed to trigger the disconnection of the load disconnect switch before triggering the lowering of the support rod when the sensor device detects the contact wire located in the end section. As a result, the vehicle drive and other electrical vehicle components can be electrically disconnected from the current collector before the current collector is disconnected. Electrically undefined states and the resulting arcs can thus be avoided.

[0016] Further advantages and properties of the energy supply system according to the invention are apparent from the following exemplary embodiments with reference to the accompanying drawings, in which:

[0017] Figure 1 A road vehicle is shown under an overhead line installation in an energy supply system according to the invention, viewed in the direction of travel;

[0018] Figure 2 shows a side view of an overhead line facility according to the prior art;

[0019] Figure 3 A top view showing a first embodiment of an overhead line installation of an energy supply system according to the invention;

[0020] Figure 4 A top view showing a second embodiment of an overhead line installation of an energy supply system according to the invention;

[0021] Figure 5 A top view showing a third embodiment of an overhead line installation of an energy supply system according to the invention;

[0022] Figure 6 A top view of a fourth exemplary embodiment of an overhead line installation of an energy supply system according to the invention is shown.

[0023] according to Figure 1 The energy supply system 1 according to the invention is designed and arranged to supply electric energy to an electric or hybrid-electric road vehicle 2, such as a heavy commercial vehicle, during travel on a road section, such as an electrified lane S of a multi-lane highway. It comprises a two-pole overhead line system 6 (see also Figures 2 to 6 ), which carries contact wires 61 designed as electrical destination and return conductors for providing electrical energy. The contact wires 61 are arranged parallel to each other along the road section at a contact wire distance D1 at a contact wire height H above the lane S. It also includes a collector 4 supported on the road vehicle 2 with an articulated support rod 41. Two contact member groups 42 are supported on the support rod 41, which can be erected by a lifting device 43 in order to close the electrical contact between the contact member group 42 and the contact wire 41. The sensor device 44 detects when the contact wire 61 is supported in the outer end section E of the working area A of the contact member group 42. The control unit 45 that controls the lifting device 43 is designed to trigger the lowering of the support rod 41 when the sensor device 44 detects the contact wire 61 supported in the end section E, so as to release the electrical contact between the contact member group 42 and the contact wire 61.

[0024] According to the invention, at least one of the contact wires 61 of the overhead line installation 6 is Figures 2 to 6 In the wire breaking section F of the road section, which is provided for releasing the electrical contact between the contact member set 42 and the contact wire 61, there is a section 68 extending laterally outward, wherein the distance D8 between the contact wires 61 measured transversely to the driving direction V of the lane S increases along the section 68 in the driving direction V. Figure 3 and Figure 5 , only one of the two contact lines 61 has a section 68 extending laterally outwards, while according to Figure 4 and Figure 6 , both contact lines 61 have such a section 68. The section 68 can be arc-shaped, polygonal or in accordance with Figures 3 to 6 The contact wire 61 extends laterally outward in a straight line so as to be away from the other contact wire 61. The contact wire height H remains unchanged here. When extending in a straight line, the section 68 of the contact wire 61 can extend laterally outward at an acute angle to the driving direction V, i.e. in a wedge or V shape. The sensor device 44 is designed to detect the contact wire 68 supported in the end section E. Finally, the control unit 45 is designed to trigger the lowering of the support rod 41 when the sensor device 44 detects the contact wire 68 supported in the end section E. Through the arrangement of the contact wire section 68, even when the road vehicle 2 is in the lane control direction, at least one of the contact wires 68 or 61, preferably both, must first be supported in the end section E of its contact member group 42, which leads to the automatic disconnection of the contact by the disconnection of the collector 4.

[0025] according to Figure 3A laterally outwardly extending section 68, and according to Figure 4 The two laterally outwardly extending sections 68 are formed by bending the contact wire 61 at the deflection point P of the overhead line facility 6. The deflection point P of the overhead line facility 6 can be formed, for example, by a side-hanging positioner 67 connected to the cantilever 66 of the lateral support device 64 of the overhead line facility 6, to which the contact wire 61 is fixedly clamped and can be bent from a direction parallel to the travel direction V to a direction extending laterally outward. The side-hanging positioner 67 occupies a fixed spatial position and absorbs the forces generated by the bending of the contact wire 61. If the two contact wires 61 are arranged in a manner Figure 4 With symmetrically arranged, transversely outwardly extending sections 68, one or more deflection points P can also be formed by crossbars 69 connecting the contact lines 61. The length of the first crossbar 69 at the beginning of these sections 68 is as great as the incoming contact line distance D1, while at the end of the transversely extending sections 68, transverse support devices 64 are arranged.

[0026] according to Figure 5 The contact wire 61 branches at the branch point Q of the overhead wire system 6 into a main branch extending in the travel direction V and a secondary branch forming a section 68 extending laterally outward. Figure 6 , the two contact wires 61 are respectively branched at the branching point Q into a main branch extending in the travel direction V and a secondary branch forming a laterally outwardly extending section 68. The contact wire 68 of the secondary branch can be fixed to the contact wire 61 of the main branch by a joint clamp at the branching point Q. When passing through the broken wire section F, the support point of the contact wire 68 of the secondary branch on the working area A of the contact member group 42 moves outward in the direction of its outer end section E. Correspondingly, in the case of a symmetrical arrangement of the laterally outwardly extending sections 68, the support points of the contact wire 68 of the secondary branch on the working area A of the contact member group 42 move outward in the direction of the corresponding outer end section E. In the broken wire section F, it is inevitable that the contact wire is supported on at least one end section E, thereby triggering the lowering of the support frame 41.

[0027] according to Figure 5 and Figure 6 At each branch point Q, a side-hanging positioner 67 of the lateral support device 64 of the overhead line facility 6 that keeps the contact wire 61 at the contact wire distance D1 can be fixed. The relaxation of the contact wire 68 of the side branch that is led laterally causes a force to act on the branch point Q, which moves them away from each other when the normal contact wire distance D1 increases, and the side-hanging positioner 67 just prevents this situation.

[0028] according to Figure 4 , the curved contact line 68 is deflected from the deflection point P, and according to Figure 6The contact line 68 of the secondary branch is guided from the branch point Q to at least one further transverse support device 64, where the contact line 68 is maintained at a contact line distance D8 which is greater than the segment distance DE between the end segments E of the two contact member groups 42. The selection of the contact line distance D8 results in a reliable detection of one or both contact lines 68 in the preceding, separately extending segments 68. In the broken segment F, which is passed at a lower speed, according to Figure 3 and Figure 5 , the transverse contact wire 68 can be led back from the transverse support 64 immediately to the contact wire 61 and connected to it via a terminal clamp. Figure 4 and Figure 6 Before being connected to one another again, the transverse contact wire 68 is first guided on one or more further transverse support structures 64 alongside the contact wire 61 .

[0029] according to Figure 1 In the road vehicle 2, the load disconnect switch 5 is arranged between the current collector 4 and the vehicle drive 3 of the road vehicle 2. Here, the control unit 45 for controlling the load disconnect switch 5 is designed to trigger the disconnection of the load disconnect switch 5 before triggering the lowering of the support rod 41 if the sensor device 44 detects the contact wire 68 located in the outer end section E. As a result, the vehicle drive 3 and other electrical vehicle components can be electrically disconnected from the current collector 4 before the current collector 4 is disconnected, thereby avoiding electrically uncertain states and the resulting arcs.

Claims

1. An energy supply system (1) for supplying electrical energy to an electric or hybrid electric road vehicle (2) during driving on a lane (S) of a road section, comprising - a two-pole overhead line installation (6) with contact wires (61) designed as electrical outgoing and return conductors for supplying electrical energy, the contact wires being arranged along the road section at a predetermined contact wire height (H) above the carriageway (S), - a current collector (4) having a support rod (41) supported in an articulated manner on the road vehicle (2); having two contact member groups (42) supported on the support rod (41); having a lifting device (43) for raising the support rod (41) to close the electrical contact between the contact member groups (42) and the contact wire (61); having a sensor device (44) for detecting the contact wire (61) supported in the outer end section (E) of the working area (A) of the contact member group (42); and also having a control unit (45) for controlling the lifting device (43) for triggering the support rod (41) to be lowered when the sensor device (44) detects the contact wire (61) supported in the end section (E) so as to release the electrical contact between the contact member group (42) and the contact wire (61), It is characterized in that - in a disconnection section (F) of a road section provided for releasing the electrical contact between the contact member assembly (42) and the contact wires (61), at least one of the contact wires (61) has a section (68) extending laterally outwards, wherein the distance (D8) between the contact lines (61) measured transversely to the direction of travel (V) of the roadway (S) increases along the section (68) in the direction of travel (V).

2. The energy supply system (1) according to claim 1, wherein in the wire breaking section (F) the two contact wires (61) each have a section (68) extending laterally outwards, -in, The distance (D8) between the contact lines (61) measured transversely to the direction of travel (V) of the roadway (S) increases along the sections (68) in the direction of travel (V).

3. Energy supply system (1) according to claim 1 or 2, -in, The laterally outwardly extending section (68) is formed by bending the contact wire (61) at a deflection point (P) of the overhead line installation (6).

4. Energy supply system (1) according to claim 1 or 2, -in, The contact wire (61) branches at a branching point (Q) of the overhead wire system (6) into a main branch extending in the travel direction (V) and a secondary branch forming a section (68) extending laterally outward.

5. Energy supply system (1) according to claim 4, - wherein the contact lines (61) are connected at opposite branching points (Q) by a crossbeam (69) which maintains a predetermined contact line distance (D1).

6. Energy supply system (1) according to claim 4, - wherein the contact wires (61) are connected at opposite branch points (Q) via side-mounted positioners (67) of a transverse support device (64) of an overhead line facility (6) that maintain a predetermined contact wire distance (D1).

7. Energy supply system (1) according to claim 6, - wherein each laterally outwardly extending segment (68) is guided from a corresponding branching point (Q) to at least one further transverse support device (64), at which the contact line (68) of the secondary branch is maintained at a contact line distance (D8) greater than the segment distance (DE) between the end segments (E) of the two contact member groups (42).

8. Energy supply system (1) according to one of claims 1 to 7, - wherein a load disconnect switch (5) is connected between the current collector (4) and a vehicle drive device (3) of a road vehicle (2), -in, When the sensor device (44) detects the contact wire (68) supported in the end section (E), the control unit (45) controlling the load disconnecting switch (5) triggers the disconnection of the load disconnecting switch (5) before triggering the lowering of the support rod (41).

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