Electronic brake system, trailer vehicle and brake controller

Abstract

An electronic brake system (14) for a trailer vehicle (12) has a brake controller (16). The electronic brake system (14) also has a first electrical connection (17) for connecting to the traction vehicle (11) and to a first voltage supply for a specific electrical consumer (21) in the trailer vehicle (12). The electronic brake system (14) also has a high-speed data interface (26) for connection to the traction vehicle (11) and to a second voltage supply. In this case, the brake controller (16) is connected to a second voltage supply.

Description

Technical Field

[0001] The present invention relates to an electronic brake system, a trailer vehicle with the electronic brake system and a brake controller for the electronic brake system in the trailer vehicle. Background Art

[0002] Conventional trailer vehicles for commercial vehicles also have an electronic brake system in combination with a pneumatic brake system, which has a brake controller. The brake controller is continuously supplied with voltage via a tractor-trailer vehicle interface in accordance with ISO 7638-1:2018 or ISO 7638-2:2018. In addition, the trailer vehicle preferably has a tractor-trailer vehicle interface in accordance with ISO 12098:2020, via which the lighting facilities of the trailer vehicle, in particular the brake lights, are supplied with voltage. The auxiliary voltage supply of the brake controller via the voltage supply for the brake lights, in particular via an interface in accordance with ISO 12098:2020, is already known. This has the disadvantage that the auxiliary voltage supply only takes place during braking, since only then does the brake lights receive voltage.

[0003] In addition to the brake controller, the trailer vehicle may also have other devices that provide or process data volumes. In particular, data that must be forwarded to the towing vehicle may be provided in conjunction with a driver assistance system or sensors / cameras provided for autonomous driving. In this case, these data may first be supplied to an electronic controller and then forwarded from there to the towing vehicle-trailer vehicle interface. For this purpose, the towing vehicle-trailer vehicle interface should be a high-speed data interface. In particular, the data should be transmitted at speeds of up to 1 Gbit / s or more. Data connectors for such high-speed interfaces already exist (see https: / / www.erich-jaeger.com / de / produkte / liste / product-innovations / event / high-speed-datenuebertragung-fuer-anbaugeraete-und-anhaenger). The data connector contains two high-speed data lines and two current contacts suitable for voltage supply. Data can be transmitted to the towing vehicle and voltage can also be supplied to electrical consumers of the trailer vehicle via this interface. Summary of the invention

[0004] The object of the present invention is to create a permanent voltage supply for a brake control in an electronic brake system of a trailer vehicle, which is independent of conventional electrical interfaces.

[0005] In order to achieve this object, an electronic brake system has the features of claim 1. The electronic brake system of the trailer vehicle is provided with:

[0006] - brake controller,

[0007] - a first electrical interface for connection to the towing vehicle and to a first voltage supply for certain electrical consumers in the trailer vehicle, and

[0008] - A high-speed data interface for connection to the towing vehicle and to the second voltage supply.

[0009] In this case, the brake controller is connected to the second voltage supply.

[0010] The first electrical interface may be an interface in accordance with ISO 7638-1:2018 or ISO 7638-2:2018. However, other electrical interfaces with a permanent voltage supply are also suitable for the electrical consumers of the trailer vehicle. For certain applications and / or regions outside the EU, other electrical interfaces with a permanent voltage supply may be provided.

[0011] The second voltage supply is integrated in the high-speed data interface and is at least indirectly connected to the voltage source in the tractor vehicle, as long as there is a connection from the trailer vehicle to the tractor vehicle via the high-speed data interface. According to the invention, the brake controller in the trailer vehicle is supplied with voltage via the high-speed data interface. It is also possible that the high-speed data interface can transmit data at least from the trailer vehicle to the tractor vehicle via the data connection at a speed of up to 1 Gbit / s or more. A connection with two contacts can be provided for the voltage supply, and the same is true for the data connection. In particular, all contacts are arranged in the high-speed data interface. The data connection can additionally have a shielding portion.

[0012] According to a further development of the invention, the brake controller can also be connected to the first voltage supply. In this way, two voltage supplies are arranged on the brake controller. In particular, the first voltage supply can be provided for undisturbed operation of the brake controller. In the event of a fault in this voltage supply, for example due to a cable break or a loose plug connection, the second voltage supply can be used as a backup solution so that no voltage interruption occurs. Alternatively, the second voltage supply can be the primary voltage supply for the brake controller, while the first voltage supply is used as a backup solution.

[0013] According to a further concept of the invention, the brake controller can be connected to the second voltage supply via an electrical connection and an electronic controller. In particular, the electronic controller can be a controller connected to a sensor or other signal generator of the trailer vehicle. Furthermore, in this embodiment, the electronic controller is connected to the second voltage supply, and in particular to the high-speed data interface. The electronic controller then has at least one voltage-conducting output, to which the brake controller is connected via the electrical connection. In this way, the brake controller is indirectly connected to the second voltage supply.

[0014] According to a further concept of the present invention, the electrical connection between the brake controller and the electronic controller can be constructed bidirectionally, so that the brake controller is connected to the second voltage supply via the electrical connection and the electronic controller, and the electronic controller is connected to the first voltage supply via the electrical connection and the brake controller. In this way, a backup solution for the voltage supply is available for both the brake controller and the electronic controller. In both controllers, the outgoing connection to the electrical connection can always be open, while the incoming connection is only opened in particular when a failure occurs in the own voltage supply.

[0015] According to a further embodiment of the invention, the electronic controller can provide the towing vehicle with data from at least one sensor of the trailer vehicle via a high-speed data interface. One or more cameras can be provided as sensors, the data of which should be transmitted to the towing vehicle via the high-speed data interface and processed there. This is particularly relevant in connection with automated driving and / or driver assistance systems.

[0016] According to a further concept of the present invention, the brake controller can be connected to the first voltage supply via an electrical connection and an electronic controller. In this case, the electronic controller is connected to the first voltage supply and indirectly supplies voltage to the brake controller. Here, the electronic controller can also be connected to the second voltage supply.

[0017] According to the invention, the first electrical interface can be designed according to ISO 7638-1: 2018 or ISO 7638-2: 2018. However, other interfaces with a voltage supply can also be provided, in particular interfaces that are already present in the commercial vehicle sector.

[0018] According to the invention, the high-speed data interface may also include two data connections and two connections for voltage supply (or more). In this case, at least four plus four contacts are preferably arranged in the high-speed data interface. This further improves fault safety.

[0019] According to the invention, the brake control can be connected to a third voltage supply, wherein the third voltage supply is a component of a further electrical interface for connection to a traction vehicle. This further increases the failsafety.

[0020] According to the invention, a further electrical interface can be designed in accordance with ISO 12098: 2020. However, other interfaces with a voltage supply, in particular with a voltage for a brake light, can also be provided, in particular interfaces that already exist in the commercial vehicle sector.

[0021] Another subject of the invention is a trailer vehicle with an electronic brake system according to claim 1 or any of the other claims. In particular, the trailer vehicle can be a trailer vehicle for a commercial vehicle with an electronic brake system. A commercial vehicle in this sense is in particular a vehicle that is to be used in goods transport, local transport, long-distance transport or on a construction site.

[0022] According to the present invention, the trailer vehicle can be a semitrailer.Then, the traction type commercial vehicle is a tractor with a saddle.

[0023] According to the invention, the trailer vehicle may be a trailer vehicle of vehicle category O3 or O4. The vehicle categories are summarized in EU Regulation 2018 / 858 of 30 May 2018.

[0024] Another subject of the invention is a brake controller for an electronic brake system in a trailer vehicle and according to claim 1 or any one of the other claims, the brake controller having an electrical connection to an electronic controller for the trailer vehicle and having a voltage supply according to at least one of the following options:

[0025] - When the brake controller is connected to the first voltage supply, the electronic controller can be supplied with voltage at least via the electrical connection and the brake controller,

[0026] When the electronic controller is coupled to the second voltage supply, the brake controller can be supplied with voltage at least via the electrical connection and the electronic controller.

[0027] The brake controller and the electronic controller are electrically connected to each other for supplying power to the corresponding other controller. In this way, a backup solution can be provided for the voltage supply, or an additional independent voltage supply can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Other features of the present invention are derived from the remaining description and claims. The embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. In the accompanying drawings:

[0029] Figure 1 A vehicle combination consisting of a tractor and a trailer vehicle in a first embodiment is shown, wherein the tractor and the trailer vehicle each have an electronic braking system;

[0030] Figure 2A slightly enlarged diagram shows the Figure 1 Trailer vehicles;

[0031] Figure 3 Show according to Figure 2 A trailer vehicle with an electronic braking system as a second embodiment;

[0032] Figure 4 Show according to Figure 2 A semitrailer with an electronic braking system as a third embodiment;

[0033] Figure 5 Show according to Figure 2 A semitrailer with an electronic braking system as a fourth embodiment;

[0034] Figure 6a A first plug-in connector is shown as a component of a first electrical interface having a voltage supply;

[0035] Figure 6b A second plug-in connector is shown as a component of a second electrical interface having a voltage supply;

[0036] Figure 6c A third plug-in connector is shown as a component of a third electrical interface with a voltage supply. DETAILED DESCRIPTION

[0037] In this embodiment, the vehicle combination 10 is composed of a tractor 11 and a semitrailer 12. The tractor 11 and the semitrailer 12 each have an electronic brake system 13, 14. One of the two electronic brake systems has its own brake controller 15, 16. The brake controller 15, 16 controls other components of the brake system 13, 14 and is triggered by driver activity, sensor signals or other controllers.

[0038] Standard electrical interfaces 17, 18 with associated plug connectors 19, 20 are provided as electrical connections between the tractor 11 and the trailer vehicle 12 and for interconnecting the two brake systems 13, 14. Preferably, the interface 17 and the plug connector 19 are designed in accordance with ISO 12098:2020, while the interface 18 and the plug connector 20 are designed in accordance with ISO 7638-1:2018 or 7638-2:2018.

[0039] On one side of the semitrailer 12, only one brake light 21 is shown as an electrical consumer connected to the interface 17. In practice, other electrical consumers (not shown) are also connected, such as a reversing light and a marker light.

[0040] The brake control 16 in the trailer 12 is supplied with voltage and signals from the tractor vehicle 11 via an interface 18 having an electrical connection 35. In addition, the interface 18 may also contain other functions.

[0041] The connection of the interfaces 17, 18 on one side of the traction machine 11 to the brake control 15 is known, so it will not be described in detail here. The traction machine 11 can also have other electronic controllers, whose arrangement and function are known, such as an engine controller.

[0042] The semitrailer 12 has a sensor 22 which is preferably arranged facing backwards and / or is a camera. The signals of the sensor 22 are forwarded via an electrical connection 23 to an electronic control unit 24, where they are processed and from there transmitted to the tractor 11. For this purpose, an electrical connection 25 leads from the control unit 24 to a further interface 26 having a plug connector 27.

[0043] The interface 26 between the tractor vehicle 11 and the trailer 12 is designed as a high-speed data interface with a voltage supply. For this purpose, the interface 26 comprises at least one data connection up to 1 Gbit / s and a voltage supply. Figure 6b As shown, the associated lines and contacts can be doubled, so that there are at least two data connections and two connections for the voltage supply. The plug connector 27 accordingly has a plurality of connection contacts, namely four contacts for the data connections and four contacts for the voltage supply.

[0044] Two of the contacts for the voltage supply are located at Figure 6b Reference numerals 26a, 26b are provided, two of which for the contacts of the data connection are provided with reference numerals 26c, 26d. In contrast, for example, at www.erich-jaeger.com (see https: / / www.erich-jaeger.com / de / produkte / liste / product-innovations / event / high-speed-datenuebertragung-fuer-anbaugeraete-und-anhaenger) only a single plug connector is disclosed. In this case, a single plug connector can also be provided.

[0045] In this case, different types of high-speed data interfaces (with voltage supply) can also be provided.

[0046] On one side of the traction machine 11 , an electrical connection 28 (which also includes a data connection) leads from the interface 26 to the brake controller 15 and / or another electronic controller. The signal of the sensor 22 can be received and processed in the brake controller 15 and / or another controller.

[0047] A permanent and reliable voltage supply is particularly important for the brake controller 16. In order to increase the safety of failure, an electrical connection 29 can be provided between the interface 17 and the brake controller 16 as a backup solution. Specifically, the electrical connection 29 can be connected to the voltage-carrying electrical connection 30 between the plug connector 19 and the brake light 21. The electrical connection 30 is only supplied with voltage when the brake light 21 is to be illuminated. Therefore, in the event of a failure of the interface 20, the brake controller 16 can only obtain the desired voltage during the braking process via the electrical connection 29.

[0048] In parallel with the electrical connection 30, further electrical connections are connected to the interface 17, in particular for supplying power to further components of the lighting system of the trailer 12. However, for the sake of clarity, the further electrical connections are not shown here.

[0049] In order to improve the failure safety of the brake controller 16, Figure 2 In the first embodiment, an electrical connection 31 is provided between the brake controller 16 and the electronic controller 24 as a backup solution. The electronic controller is connected to the interface 26 , so that the voltage supply to the brake controller 16 can be realized through the interface 26 and the electronic controller 24 .

[0050] The electrical connection 31 is preferably designed bidirectionally, so that a backup solution for the voltage supply of the electronic control unit 24 can be provided at the same time, namely via the brake control unit 16 and the interface 18 .

[0051] Figure 3 A second embodiment is shown. Here, the electrical connections 25, 35 are led to the electronic control unit 24. The brake control unit 16 is supplied with voltage only via the electronic control unit 24. Although there is no redundancy in this respect, the voltage supply to the brake control unit 16 is relatively safe, since the voltage supply via the exposed interfaces 18, 26 is doubled and the electrical connection 31 is preferably only a short line that cannot come loose during operation.

[0052] For simplicity, Figure 3 The interface 17 with the electrical connections 30 and the brake light 21 is not shown in the figure, but may nevertheless be present.

[0053] Figure 4A third embodiment is shown, i.e. as a modification of the first embodiment, but without the electronic control unit 24. The electrical connection 31 is joined to the electrical connections 23, 25 in the region of the node 32. The signal of the sensor 22 is processed in the sensor 22 itself or in the control unit of the traction machine 11 or at another location not shown, if necessary. Figure 4 As shown, the electrical connection 31 can be unidirectional, ie, in addition to the voltage supply via the electrical connection 35 , it can also be used to supply the brake control 16 with voltage.

[0054] Figure 5 A fourth embodiment is shown. For the sake of simplicity, the interface 17 with the electrical connection 30 and the brake light 21 is again not shown, but may be present. Both the brake control 16 and the electronic control 24 are connected to two electrical connections 25, 35 leading to the interfaces 18, 26. For this purpose, the brake control 16 has two jumper lines 33, 34. Therefore, both controllers 16 and 24 have a redundant voltage supply.

[0055] The above-mentioned electrical connections and bonding lines 23, 25, 28, 29, 30, 31, 33, 34, 35 comprise at least lines suitable for voltage supply, optionally in combination with data lines and / or other electrical lines.

[0056] Figure 6a , 6b , 6c show the plug connectors 20, 27, 19 of the interfaces 18, 26, 17. Each interface 18, 26, 17 has an electrical conductor for voltage supply, not shown. Accordingly, the plug connectors 20, 27, 19 are provided with contacts 18a, 18b, 26a, 26b and 17a, 17b for voltage supply connected to the electrical conductor. Depending on the configuration, the voltage supply to the brake controller 16 is carried out through one of the three interfaces 18, 26, 17 and thus through each of the two associated contacts 18a, 18b, 26a, 26b and 17a, 17b, and in an auxiliary manner through each of the two other contacts 18a, 18b, 26a, 26b or 17a, 17b of one of the other three interfaces 18, 26, 17. The same applies to the voltage supply to the electric controller 24.

[0057] The plug connectors 20, 27, 19 also have further contacts depending on their function, in particular for data transmission, see Figure 6a The contact portions 18c, 18d in the Figure 6b The contact portions 26c, 26d and Figure 6c The contact portions 17c, 17d in the embodiment of the present invention.

[0058] List of reference numerals, forming part of the description

[0059] 10 Vehicle combinations

[0060] 11 Tractor

[0061] 12 Semi-trailer

[0062] 13 Electronic Braking System

[0063] 14 Electronic Braking System

[0064] 15 Brake controller

[0065] 16 Brake controller

[0066] 17 Interface

[0067] 17a Contact part

[0068] 17b Contact part

[0069] 17c Contact part

[0070] 17d Contact part

[0071] 18 Interface

[0072] 18a Contact part

[0073] 18a Contact part

[0074] 18c Contact part

[0075] 18d Contact part

[0076] 19 Plug connector

[0077] 20 Plug connector

[0078] 21 Brake lights

[0079] 22 Sensors

[0080] 23 Electrical connection

[0081] 24 Electronic Controller

[0082] 25 Electrical connection

[0083] 26 Interface

[0084] 26a Contact part

[0085] 26b Contact part

[0086] 26c Contact part

[0087] 26d Contact part

[0088] 27 Plug connector

[0089] 28 Electrical connection

[0090] 29 Electrical connection

[0091] 30 Electrical connection

[0092] 31 Electrical connection

[0093] 32 nodes

[0094] 33 Laying lines

[0095] 34 Connection lines

[0096] 35 Electrical connection

Claims

1. An electronic brake system (14) for a trailer vehicle (12), the electronic brake system comprising: - brake controller (16), a first electrical interface (18) for connection to a first voltage supply (18a, 18b) for a specific electrical consumer in the towing vehicle (11) and to a trailer vehicle (12), - a high-speed data interface (26) for connection to a traction vehicle (11) and to a second voltage supply (26a, 26b), in, The brake controller (16) is connected to the second voltage supply unit (26a, 26b).

2. The electronic brake system (14) according to claim 1, characterized in that: The brake controller (16) is also connected to the first voltage supply (18a, 18b).

3. The electronic brake system (14) according to claim 1 or 2, characterized in that: The brake controller (16) is connected to the second voltage supply (26a, 26b) via an electrical connection (31) and an electronic controller (24).

4. The electronic brake system (14) according to claim 3, characterized in that: The electrical connection (31) is bidirectionally constructed between the brake controller (16) and the electronic controller (24), so that the brake controller (16) is connected to the second voltage supply (26a, 26b) via the electrical connection (31) and the electronic controller (24), and the electronic controller (24) is connected to the first voltage supply (18a, 18b) via the electrical connection (31) and the brake controller (16).

5. The electronic brake system (14) according to any one of claims 1 to 4, characterized in that: The electronic controller (24) provides the tractor vehicle (11) with data from at least one sensor (22) of the trailer vehicle (12) via the high-speed data interface (26).

6. The electronic brake system (14) according to any one of claims 1 to 2, characterized in that: The brake controller (16) is connected to the first voltage supply (18a, 18b) via an electrical connection (31) and an electronic controller (24).

7. The electronic brake system (14) according to any one of claims 1 to 6, characterized in that: The first electrical interface (18) is constructed according to ISO 7638-1 / -2:2018.

8. The electronic brake system (14) according to any one of the preceding claims, characterized in that The high-speed data interface (26) comprises at least two data connection parts and two connection parts for voltage supply.

9. The electronic brake system (14) according to any one of the preceding claims, characterized in that The brake control (16) is connected to a third voltage supply (17a, 17b), wherein the third voltage supply (17a, 17b) is a component of a further electrical interface (17) for connection to the traction vehicle (11).

10. The electronic brake system (14) according to claim 9, characterized in that The further electrical interface ( 17 ) is designed in accordance with ISO 12098:2020.

11. A trailer vehicle (12) having an electronic brake system (14) according to any one of claims 1 to 10.

12. The trailer vehicle (12) according to claim 11, characterized in that The trailer vehicle (12) is a semitrailer.

13. The trailer vehicle (12) according to claim 11 or 12, characterized in that: The trailer vehicle belongs to vehicle category O3 or O4.

14. A brake controller (16) for an electronic brake system (14) in a trailer vehicle (12) according to any one of claims 1 to 10, the brake controller having an electrical connection (31) to an electronic controller (24) for the trailer vehicle (12) and having a voltage supply according to at least one of the following options: - when the brake controller (16) is connected to a first voltage supply (18a, 18b), the electronic controller (24) can be supplied with voltage at least via the electrical connection (31) and the brake controller (16), When the electronic controller (24) is connected to a second voltage supply (26a, 26b), the brake controller (16) can be supplied with voltage at least via the electrical connection (31) and the electronic controller (24).

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