An integrated power distribution module for a road construction machine and a road construction machine

Abstract

The application discloses an integrated power distribution module of a road engineering machine and the road engineering machine, and relates to the technical field of power supply loop detection. The integrated power distribution module is composed of a plurality of channel units including control circuits, each channel unit is connected with a vehicle power supply and a corresponding load element to form a power supply loop of the road engineering machine; wherein the control circuit includes a current detection unit, a master control unit and a channel switch unit; the current detection unit is used for acquiring a target current flowing through the channel unit and sending the target current to the master control unit; the master control unit is used for determining state information of the channel unit based on the target current and generating a control instruction based on the state information and sending the control instruction to the channel switch unit; and the channel switch unit is used for controlling the on-off of the power supply loop based on the control instruction. Thus, the problem of affecting the working efficiency and use cost of the equipment caused by the short-circuit protection of the power supply loop of the road engineering machine through the fuse (fuse) is solved.

Description

Technical Field

[0001] This application relates to the field of power circuit detection technology, and more specifically, to an integrated power distribution module for road construction machinery and the road construction machinery itself. Background Technology

[0002] Currently, most road construction machinery controller systems are powered by 24V DC, and depending on the complexity of the equipment, they contain several power supply circuits. Each individual circuit is protected against short circuits by a fuse. However, because this power circuit protection method only provides protection by the fuse blowing when a short circuit occurs, voltage measurements of the circuit are still required for fault detection, troubleshooting, and handling, which affects the efficiency of fault handling.

[0003] Furthermore, after a short circuit occurs, the fuse blows, requiring the replacement of the fuse after addressing the cause of the short circuit to restore the equipment to normal operation, thus affecting the equipment's efficiency.

[0004] In addition, physical fuses require a certain response time to blow. For example, the blowing time of ordinary automotive fuses is about 200ms. That is, it takes about 200ms after a short circuit occurs for the protection to be cut off. This will cause the components in the corresponding circuit to be subjected to the surge current caused by the short circuit for about 200ms. This current surge has a certain probability of damaging the components in the circuit, affecting the cost of equipment use. Utility Model Content

[0005] In view of this, the embodiments of this application aim to provide an integrated power distribution module for road construction machinery and road construction machinery, so as to solve the problem of the impact on equipment working efficiency and operating costs caused by short-circuit protection of the power supply circuit of road construction machinery through fuses (circuit breakers).

[0006] In the first aspect, this utility model provides an integrated power distribution module for road construction machinery, which consists of several channel units including control circuits. Each channel unit is connected to the vehicle power supply and corresponding load components to form a power supply circuit for the road construction machinery.

[0007] The control circuit includes a current detection unit, a main control unit, and a channel switch unit.

[0008] The current detection unit is connected to the main control unit and is used to acquire the target current and send the target current to the main control unit. The target current is the current flowing through the channel unit.

[0009] The main control unit is connected to the channel switch unit and is used to determine the status information of the channel unit based on the target current, and generate control commands based on the status information and send them to the channel switch unit.

[0010] The channel switch unit is used to control the on / off state of the power supply circuit based on the control command.

[0011] In one possible implementation, the current detection unit includes a sampling resistor and an operational amplifier, wherein the sampling resistor and the operational amplifier are connected in parallel.

[0012] In one possible implementation, the channel switching unit includes a diode and a switch, wherein the diode and the switch are connected in parallel;

[0013] The diode is used to prevent the target current from flowing in reverse; the switch is used to control the on / off state of the power supply circuit.

[0014] In one possible implementation, the main control unit includes a processing module and a communication module. The processing module is connected to the communication module and is used to determine the status information based on the target current, the target current, and a preset current limit value corresponding to the channel unit received by the communication module.

[0015] In one possible implementation, the communication module is connected to the vehicle controller of the road construction machinery, and is used to send the status information and the target current to the vehicle controller, and to receive the current preset limit value sent by the vehicle controller.

[0016] In one possible implementation, the vehicle controller is connected to the display module of the road construction machinery, and is used to receive the current preset limit value sent by the display module, and to trigger the display module to display the status information, the target current, and fault alarm prompt information generated based on the status information.

[0017] In one possible implementation, the communication module is the CAN bus of the road construction machinery.

[0018] In one possible implementation, the channel unit further includes a first plug-in connected to the output of the control circuit;

[0019] The first plug-in is used to connect the corresponding load element via a wiring harness.

[0020] In one possible implementation, the channel unit is connected to the vehicle power supply via a second plug-in.

[0021] Secondly, this utility model provides a road construction machinery, wherein the power supply circuit of the road construction machinery is connected to the vehicle power supply and corresponding load components through the integrated power distribution module provided in the first aspect of this utility model.

[0022] The integrated power distribution module for road construction machinery provided by this utility model is configured to consist of several channel units including control circuits. Each channel unit is connected to the vehicle power supply and corresponding load components to form the power supply circuit of the road construction machinery. Each control circuit includes a current detection unit, a main control unit, and a channel switch unit. This allows the state of each channel unit to be determined based on the magnitude of the current flowing through it, and control commands to be generated based on the state information of the channel units to control the on / off state of the power supply circuit. This not only enables self-diagnosis of power supply circuit faults but also enables rapid disconnection when a power supply circuit fault occurs, thereby improving fault handling efficiency, increasing equipment operating efficiency, and reducing operating costs. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0024] Figure 1 The diagram shown is a structural diagram of an integrated power distribution module for road construction machinery provided in an embodiment of this utility model;

[0025] Figure 2 The diagram shown is a structural diagram of a power supply system constructed using the integrated power distribution module provided in an embodiment of this utility model.

[0026] Figure 3 The diagram shown is a structural diagram of an example of an integrated power distribution module provided by an embodiment of this utility model.

[0027] Figure 4 The diagram shown is a structural diagram of another power supply system constructed using the integrated power distribution module provided in this embodiment of the present invention.

[0028] Figure 5 The diagram shown is a structural diagram of a power supply system constructed using the integrated power distribution module provided in this embodiment of the present invention.

[0029] Figure 6 The diagram shown is a circuit diagram of an example of the control circuit provided in an embodiment of this utility model. Detailed Implementation

[0030] Unless otherwise defined, the technical or scientific terms used in the embodiments of this specification shall have the ordinary meaning understood by one of ordinary skill in the art to which this specification pertains. The terms "first," "second," and similar terms used in the embodiments of this specification do not indicate any order, quantity, or importance, but are merely used to avoid confusion of constituent elements.

[0031] Unless the context otherwise requires, throughout this specification, "a plurality of" means "at least two," and "including" is interpreted as open-ended or encompassing, that is, "including, but not limited to." In the description of this specification, terms such as "one embodiment," "some embodiments," "exemplary embodiment," "example," "specific example," or "some examples" are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this specification. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example.

[0032] The technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this specification, and not all embodiments. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this specification.

[0033] Currently, in road construction machinery, short-circuit protection for each power supply circuit is achieved by installing fuses or circuit breakers in the power supply circuit. While this protection method can prevent damage to equipment components caused by short circuits to some extent, manual inspection is still required after a short circuit occurs to locate and handle the fault. Furthermore, the need to replace fuses or circuit breakers means that the road construction machinery cannot immediately return to normal operation after the fault is resolved.

[0034] This utility model aims to solve the above-mentioned problems. By setting up an integrated power distribution module composed of several channel units and setting up a control circuit in each channel unit, it realizes the self-diagnosis and handling of faults in the power supply circuit, thereby solving the problem of low efficiency in line self-diagnosis and fault handling caused by short-circuit protection of the power supply circuit by fuses or circuit breakers.

[0035] See Figure 1 and Figure 2 , Figure 1 and Figure 2 This utility model provides a structural diagram of an integrated power distribution module for road construction machinery and a structural diagram of a power supply circuit constructed using the integrated power distribution module. Figure 2As can be seen, the integrated power distribution module 1 consists of several channel units 10, each including a control circuit. Each channel unit 10 is connected to the vehicle power supply 20 and a corresponding load element 30 to form a power supply circuit for the road construction machinery. Specifically, the vehicle power supply 20 is preferably the battery originally used on the road construction machinery to supply power to each power supply circuit, thereby reducing the cost of use.

[0036] Furthermore, by configuring the integrated power distribution module 1 as a plurality of channel units 10 including control circuits, after each channel unit 10 is connected to the vehicle power supply 20 and the corresponding load element 30 respectively, the vehicle power supply 20 can provide power input to the integrated power distribution module 1. Each channel unit 10 in the integrated power distribution module 1, together with the vehicle power supply 20 and different load elements 30, forms an independent power supply circuit, thereby independently completing one function of the road construction machinery.

[0037] like Figure 1 As shown, the control circuit includes a current detection unit 11, a main control unit 12, and a channel switch unit 13. Specifically, the current detection unit 11 is used to detect the magnitude of the current flowing through the power supply circuit, i.e., to obtain the target current. The main control unit is used to determine the state information of the channel unit 10 based on the target current; for example, when the target current is 0, the state of the channel unit is determined to be open circuit. The channel switch unit is used to control the on / off state of the power supply circuit based on control commands.

[0038] Therefore, after connecting the current detection unit 11 to the main control unit 12 and the main control unit 12 to the channel switch unit 13, the current detection unit 11 can send the acquired target current to the main control unit 12. Then, the main control unit 12 uses the target current to determine the status information of the channel unit 10 and generates control commands based on the status information to send to the channel switch unit 13. Finally, the channel switch unit 13 can control the on / off of the power supply circuit according to the control commands, thus realizing fault self-diagnosis and circuit protection of the power supply circuit based on logic circuits.

[0039] The integrated power distribution module in this embodiment replaces the protection function of fuses or circuit breakers used in the prior art for the power supply circuit with logic circuits and power components. Compared with the short-circuit protection of the power supply circuit provided by fuses or circuit breakers, the integrated power distribution module provided by this embodiment not only responds faster when a short circuit occurs in the power supply circuit, but also does not affect the restoration efficiency due to fuse replacement when restoring the power supply circuit. In addition, it can also realize the open circuit monitoring of the power supply circuit, thereby realizing the self-diagnosis and fault location of the power supply circuit fault, which facilitates the improvement of fault handling and line restoration efficiency.

[0040] In a further embodiment of this utility model, such as Figure 3As shown, the current detection unit 11 includes a sampling resistor 111 and an operational amplifier 112, which are connected in parallel.

[0041] Specifically, in current detection, the sampling resistor 112 is used as the current sensor because its very low resistance reduces power consumption and minimizes its impact on the measurement and load circuitry. The operational amplifier 112 amplifies and processes the voltage drop across the sampling resistor 112 for more accurate current measurement. By configuring the current detection unit 11, which includes the sampling resistor 111 and the operational amplifier 112, to acquire the current flowing through the channel unit 10, it offers advantages such as low cost, high accuracy, and ease of operation.

[0042] In a further embodiment of this utility model, such as Figure 3 As shown, the channel switching unit 13 includes a diode 131 and a switch 132, which are connected in parallel. Specifically, the diode 131 effectively prevents the target current from flowing in reverse, while the switch 132 controls the on / off state of the power supply circuit, thereby improving the safety of the power supply circuit.

[0043] In a further embodiment of this utility model, such as Figure 3 As shown, the main control unit 12 includes a processing module 121 and a communication module 122, with the processing module 121 connected to the communication module 122. Specifically, it is preferable to use a MCU (Microcontroller Unit) chip from the road construction machinery to implement the functions of the main control unit 12, thereby reducing costs.

[0044] Specifically, the main control unit 12 is used to determine status information based on the target current, and the target current and the current preset limit value corresponding to the channel unit 10 received by the communication module 122.

[0045] In some possible embodiments, taking a milling machine as an example, the functions it needs to perform are fixed, that is, the number of power supply circuits required is fixed. Therefore, based on the overall power capacity of the milling machine, the number of power supply circuits, and the corresponding functions, the current to be allocated to each power supply circuit can be determined. Based on this, a preset current limit can be determined for each power supply circuit, that is, the maximum current that can flow through each power supply circuit when the milling machine is operating normally.

[0046] Based on the above embodiments, by configuring the main control unit 12 to include a processing module 121 and a communication module 122, and connecting the processing module 121 and the communication module 122, the communication module 122 can send the acquired current preset limit value to the processing module 121. Then, the processing module 121 determines the status information of the channel unit 10 based on the target current, the target current, and the current preset limit value, that is:

[0047] When the target current is 0, the state of channel unit 10 is determined to be an open circuit fault;

[0048] When the target current exceeds the preset current limit, the channel unit is determined to be in a short-circuit fault state.

[0049] When the target current is greater than 0 and less than the preset current limit, the channel unit is determined to be in normal operation.

[0050] By applying the integrated power distribution module in this embodiment, accurate detection of the power supply circuit status is achieved, which facilitates the location and elimination of faults when a fault is determined to exist in the power supply circuit.

[0051] In a further embodiment of this utility model, such as Figure 3 As shown, the communication module 122 is connected to the vehicle controller 40 of the road construction machinery. Specifically, after connecting the communication module 122 to the vehicle controller 40, the communication module can send the status information of the channel unit and the target current determined by the processing module 121 to the vehicle controller 40 for storage and subsequent application. For example, based on the received status information of the channel unit, the target current, and the currently set current preset limit, a more suitable current preset limit can be reset. Simultaneously, the vehicle controller 40 can also receive the current preset limit.

[0052] In a further embodiment of this utility model, such as Figure 3 As shown, the vehicle controller 40 is connected to the display module 50 of the road construction machinery. Specifically, the display module 50 is preferably used as the vehicle display screen of the road construction machinery to reduce costs.

[0053] Furthermore, by connecting the vehicle controller 40 to the display module 50, the preset current limit value input by the user through the display module 50 can be uploaded to the vehicle controller 40. Simultaneously, the status information of the channel units, target current, corresponding preset current limit value, and fault alarm prompts generated based on the status information obtained by the communication module 122 can all be displayed on the display module 50. This facilitates the user's understanding of the real-time status of each power supply circuit of the road construction machinery and allows for timely troubleshooting based on the fault prompts.

[0054] In some possible embodiments, the fault indication information may be a combination of one or more of sound, light, and text. For example: when a short circuit is detected in channel unit A, the target current corresponding to channel unit A is displayed on the display module flashes, and a voice announcement is made that channel unit A has short-circuited; when an open circuit is detected in channel unit B, the data corresponding to channel unit B displayed on the display module turns red; an alarm display bar is set on the display module, and when a channel unit malfunctions, the corresponding fault indication information is displayed on the alarm display bar, etc. No specific limitations are made here.

[0055] In a further embodiment of this utility model, the communication module 122 is the CAN bus of the road construction machinery.

[0056] Specifically, by setting the communication module 122 as the CAN bus of the road construction machinery, the trouble of rearranging components and wiring on the road construction machinery is avoided, thereby reducing costs.

[0057] In a further embodiment of this utility model, such as Figure 4 As shown, the channel unit 10 also includes a first plug-in 14 connected to the output terminal of the control circuit;

[0058] The first plug-in 14 is used to connect the corresponding load element 30 via the wire harness 60.

[0059] Specifically, wiring harness 60 is the circuit that supplies power to the components of the entire vehicle. Taking a milling machine as an example, based on the function and location of its components, it can be classified as follows:

[0060] Line 1: Power supply for the vehicle controller system;

[0061] Line 2: Vehicle controller drive power supply;

[0062] Line 3: Power supply for the vehicle's display screen;

[0063] Line 4: Power supply for the left front frame light;

[0064] Line 5: Power supply for the right front frame light;

[0065] Line 6: Power supply for the left rear frame light;

[0066] Line 7: Power supply for the right rear frame light;

[0067] Line 8: Speaker power supply;

[0068] Line 9: Power supply for warning lights;

[0069] Line 10: Control panel power supply;

[0070] Line 11: Engine ECU power supply;

[0071] Line 12: Proximity switch sensor power supply;

[0072] Line 13: Pressure sensor power supply; ......

[0074] Line N: Component N power supply.

[0075] Specifically, by setting the channel unit 10 to include the output terminal of the control circuit and the first plug-in 14 of the load element 30, the connection between the integrated power distribution module and the load element 30 is made more stable and reliable.

[0076] In a further embodiment of this utility model, such as Figure 4 As shown, the channel unit 10 is connected to the vehicle power supply 20 via the second plug-in 70.

[0077] Specifically, by setting up a connection between the channel unit 10 and the vehicle power supply 20 via the second plug-in 70, the connection between the integrated power distribution module and the vehicle power supply 20 becomes more stable and reliable.

[0078] In summary, taking the vehicle power supply as the battery of the road construction machinery and the display module as the vehicle display screen as an example, the power supply circuit system structure of the road construction machinery composed of the integrated power distribution module provided in the above embodiments is as follows: Figure 5 As shown in the diagram, the integrated power distribution module receives a 24V DC power input from the positive terminal of the battery via the second plug-in. The first plug-in is connected to the positive terminal of the load element via a wiring harness, and the negative terminal of the load element is connected to the battery accessory. Therefore, the second plug-in serves as the input to the channel unit, and the first plug-in serves as the output. A control circuit connects the first and second plug-ins. Thus, the battery, channel unit, wiring harness, and load element form a complete power supply loop.

[0079] Specifically, the vehicle controller serves as the control center for the overall functions of the road construction machinery. The integrated power distribution module communicates with the vehicle controller via a CAN bus. Simultaneously, the vehicle controller communicates with the vehicle display screen via the CAN bus, enabling the display screen to receive status information from each channel unit of the integrated power distribution module. This information includes target current values ​​for channels 1 to N, fault status (short circuit / open circuit), and switch status. The controller then sends this status information to the vehicle display screen for display and alarm prompts. Furthermore, the controller receives preset current limits corresponding to each channel unit from the vehicle display screen, such as preset current limit 1, preset current limit 2, ..., preset current limit N, and sends these preset current limits to the main control unit.

[0080] Furthermore, in some possible embodiments, the control circuitry in the channel unit is as follows: Figure 6 As shown, it includes the following parts:

[0081] The main control chip MCU, a current detection unit including sampling resistor R1 and operational amplifier U1, and a channel switching unit Q1 including diodes and switches.

[0082] The channel switch unit has two states: open and closed. In the open state, the first and second plug-ins are connected, meaning the battery supplies power to the load element (LOAD), and the power supply circuit is open. In the closed state, the first and second plug-ins are disconnected, meaning the battery and the load element (LOAD) are disconnected, and the power supply circuit is closed. The specific state of the channel switch unit is controlled by the main control chip (MCU).

[0083] The current detection unit collects the magnitude and status of the current flowing through the channel unit and feeds it back to the MCU.

[0084] The main control chip (MCU) outputs the state of the control channel switching unit through current feedback input and current preset limit value sent from the vehicle controller, switching from the on state to the off state or from the off state to the on state.

[0085] Furthermore, the main control chip (MCU) includes a communication module (CAN bus) and communicates with the vehicle controller via this module to send the status information of the channel units to the vehicle controller. Simultaneously, the MCU's processing module receives the preset current limits corresponding to each channel unit from the vehicle controller via the CAN bus and sends the collected current values ​​flowing through each channel unit to the vehicle controller via the CAN bus.

[0086] It is evident that by applying the integrated power distribution module of the road construction machinery provided in this utility model embodiment to the power supply circuit of the road construction machinery, the problems of inaccurate location and diagnosis of power-related faults, slow protection response speed, and inability to monitor and visualize the status of the power distribution circuit in real time can be solved, thereby realizing self-diagnosis of the vehicle's power supply faults (accurate location of the fault location), rapid circuit disconnection during faults, and status monitoring and visualization.

[0087] Optionally, this utility model embodiment also provides a road construction machinery, wherein the power supply circuit of the road construction machinery is composed of the vehicle power supply and corresponding load components connected through an integrated power distribution module as provided in any of the above embodiments.

[0088] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0089] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0090] It should also be noted that in the apparatus, equipment, and methods of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.

[0091] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0092] It should be understood that the qualifiers “first,” “second,” “third,” “fourth,” “fifth,” and “sixth” used in the description of the embodiments of this application are only used to more clearly illustrate the technical solutions and are not intended to limit the scope of protection of this application.

[0093] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. An integrated power distribution module for a road construction machine, characterized by, It consists of several channel units (10) including control circuits, and each channel unit (10) is connected to the vehicle power supply (20) and the corresponding load element (30) to form the power supply circuit of the road construction machinery. The control circuit includes a current detection unit (11), a main control unit (12), and a channel switch unit (13); The current detection unit (11) is connected to the main control unit (12) and is used to acquire the target current and send the target current to the main control unit (12). The target current is the current flowing through the channel unit (10). The main control unit (12) is connected to the channel switch unit (13) and is used to determine the status information of the channel unit (10) based on the target current, and generate control commands based on the status information and send them to the channel switch unit (13); The channel switch unit (13) is used to control the on / off state of the power supply circuit based on the control command.

2. The integrated power distribution module for a road engineering machine of claim 1, wherein, The current detection unit (11) includes a sampling resistor (111) and an operational amplifier (112), wherein the sampling resistor (111) and the operational amplifier (112) are connected in parallel.

3. The integrated power distribution module for a road engineering machine of claim 1, wherein, The channel switching unit (13) includes a diode (131) and a switch (132), wherein the diode (131) and the switch (132) are connected in parallel; The diode (131) is used to prevent the target current from flowing in reverse; the switch (132) is used to control the on / off state of the power supply circuit.

4. The integrated power distribution module for a pavement engineering machine of claim 1, wherein, The main control unit (12) includes a processing module (121) and a communication module (122). The processing module (121) is connected to the communication module (122) and is used to determine the status information based on the target current, the target current and the current preset limit value corresponding to the channel unit (10) received by the communication module (122).

5. The integrated power distribution module for a road construction machine of claim 4, wherein, The communication module (122) is connected to the vehicle controller (40) of the road construction machinery, and is used to send the status information and the target current to the vehicle controller (40), and to receive the current preset limit value sent by the vehicle controller (40).

6. The integrated power distribution module for a road engineering machine of claim 5, wherein, The vehicle controller (40) is connected to the display module (50) of the road construction machinery, and is used to receive the current preset limit value sent by the display module (50), and to trigger the display module (50) to display the status information, the target current, and the fault alarm prompt information generated based on the status information.

7. The integrated power distribution module for a pavement engineering machine of claim 5, wherein, The communication module (122) is the CAN bus of the road construction machinery.

8. The integrated power distribution module for a pavement engineering machine of claim 1, wherein, The channel unit (10) also includes a first plug-in connected to the output terminal of the control circuit; The first plug is used to connect the corresponding load element (30) via a wire harness (60).

9. The integrated power distribution module for a road construction machine of any of claims 1-8, wherein, The channel unit (10) is connected to the vehicle power supply (20) via a second plug-in.

10. A road construction machine characterized by comprising: The power supply circuit of the road construction machinery is formed by connecting the vehicle power supply and corresponding load components through the integrated power distribution module as described in any one of claims 1-9.

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