Power distribution device, power distribution system and commercial vehicle
By using distribution boxes and CAN bus control relays in commercial vehicles, the problems of many wire harnesses, large energy loss and interface solidification of commercial vehicles' power distribution devices are solved, and the wiring harness simplification, reduction of losses and improvement of interface universality is achieved.
Patent Information
- Application Number
- CN202210912869.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-07-31
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2042-07-31
AI Technical Summary
The existing commercial vehicle distribution devices have large number of wire harnesses, large energy loss, and solidified interfaces, which cannot meet the needs of the configuration combination of variable power consumption equipment.
Multiple distribution boxes are adopted, each distribution box includes a distribution control board, a positive electrode line, a negative electrode line, multiple relays and CAN buses. The distribution message command is transmitted through the CAN bus to control the conduction of the relay, realizing flexible switching of the distribution type.
Simplify the number of wire harnesses and transmission space, reduce online losses, reduce vehicle weight, improve the versatility of power distribution interfaces, and meet the needs of variable power equipment configuration combinations.
Smart Images
Figure CN115923687B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of automobile power distribution, and in particular to a power distribution device and a commercial vehicle. Background Art
[0002] The power distribution device is an important component of commercial vehicles. With the development of electronic technology and the integration of the Internet and the automotive industry, the intelligence and networking of commercial vehicles have entered a period of rapid development. The power distribution device has emerged with a variety of electronic configuration combinations.
[0003] At present, in the field of commercial vehicles, the power distribution device is mainly centralized. The battery supplies power to each electrical device in the vehicle through thin positive and negative wires. In addition, the thin positive wires, thin negative wires, electrical devices and battery circuits are switched on and off through hard-wired voltage command signals.
[0004] This approach leads to the following disadvantages:
[0005] 1. The signal hard wires, thin positive wires, and thin negative wires required for vehicle power distribution are numerous and long, which takes up a lot of space, increases the weight of the vehicle, and causes large energy loss.
[0006] 2. The interface of a pair of thin positive wires and thin negative wires is basically fixed with a certain electrical equipment. Once the electrical equipment is changed, the pair of thin positive wires and thin negative wires may not be used, and cannot meet the changing configuration combination of electrical equipment. Summary of the Invention
[0007] The embodiments of the present invention provide a power distribution device, a power distribution system and a commercial vehicle to solve the technical problems in the related art of the power distribution device of the existing commercial vehicle, such as a large number of wiring harnesses, large energy loss and rigid interfaces.
[0008] In a first aspect, a power distribution device is provided, comprising:
[0009] Multiple distribution boxes, each of which is provided in a plurality of distribution areas of the vehicle, each of which includes:
[0010] -Power distribution control panel;
[0011] - a positive wire, one end of which is connected to the positive terminal on the power distribution control board and the other end is connected to the positive terminal of the battery of the vehicle;
[0012] - a negative electrode line, one end of which is connected to the negative electrode connector on the power distribution control board and the other end is connected to the negative electrode of the battery of the vehicle;
[0013] - a plurality of relays, which are arranged on the control distribution board, one end of each relay is connected to the positive terminal on the distribution board, and the other end is connected to the distribution interface of the distribution control board;
[0014] - A CAN bus, which is electrically connected to the power distribution control board, and the CAN bus is used to transmit power distribution message instructions to the power distribution control board to control the conduction of the relay.
[0015] In some embodiments, the plurality of power distribution areas include one or more of a ceiling area, an instrument area, a berth area, and a chassis area.
[0016] In some embodiments, the electrical devices in the ceiling area include skylights, ceiling lights, reading lights, and electric curtains.
[0017] In some embodiments, the electrical components in the instrument area include a water spray motor and a wiper motor.
[0018] In some embodiments, the electrical components in the berth area include seat function motors and berth reading lights.
[0019] In some embodiments, the electrical components in the chassis area include a solenoid valve and an oil level sensor.
[0020] In some embodiments, the plurality of relays include an ON position relay, an ACC position relay, and a main power switch position relay.
[0021] In some embodiments, the wire diameters of the positive wire and the negative wire of each distribution box are determined according to the current requirements of the electrical components of the vehicle in the corresponding power distribution area and a preset wire diameter selection list.
[0022] In a second aspect, a power distribution system is provided, comprising the aforementioned power distribution device, and further comprising:
[0023] A power distribution terminal is connected to the CAN bus, and is used to send power distribution message instructions to the CAN bus.
[0024] In a third aspect, a commercial vehicle is provided, comprising the aforementioned power distribution system.
[0025] The beneficial effects brought about by the technical solution provided by the present invention include:
[0026] An embodiment of the present invention provides a power distribution device, a power distribution system, and a commercial vehicle, which includes a plurality of power distribution boxes, which are correspondingly arranged in a plurality of power distribution areas of the vehicle, and each of the power distribution boxes includes a power distribution control panel, a positive line, a negative line, a plurality of relays, and a CAN bus. On the one hand, the power distribution box in the power distribution area replaces the spatial layout of the original centralized power distribution that requires a large number of wiring harnesses with four wires, namely the CAN bus, the positive line, and the negative line, thereby simplifying the number of wiring harnesses and the transmission space, reducing online losses, saving wiring harness resources, and reducing the weight of the entire vehicle. On the other hand, by controlling the conduction of the relay with a power distribution message instruction via the CAN bus, the power distribution type output by the power distribution box can be changed, solving the problem that the original power distribution interface is fixed and cannot be changed, and having greater versatility. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0028] Figure 1 A block diagram of the principles of a power distribution device provided by an embodiment of the present invention;
[0029] Figure 2 A schematic diagram of a power distribution box of a power distribution device provided in an embodiment of the present invention. DETAILED DESCRIPTION
[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.
[0031] An embodiment of the present invention provides a power distribution device that can solve the technical problems of existing commercial vehicle power distribution devices, such as multiple distribution harnesses, large energy loss, and rigid distribution interfaces.
[0032] See also Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a power distribution device, including: multiple distribution boxes, multiple distribution boxes are correspondingly arranged in multiple distribution areas of the whole vehicle, each of the distribution boxes includes: a power distribution control board, a positive line, a negative line, multiple relays and a CAN bus.
[0033] One end of the positive line is connected to the positive terminal on the power distribution control board, and the other end is connected to the positive terminal of the battery of the whole vehicle. One end of the negative line is connected to the negative terminal on the power distribution control board, and the other end is connected to the negative terminal of the battery of the whole vehicle. A plurality of relays are arranged on the control distribution board, and one end of each relay is connected to the positive terminal on the power distribution board, and the other end is connected to the power distribution interface on the power distribution control board. The CAN bus is electrically connected to the power distribution control board, and the CAN bus is used to transmit power distribution message instructions to the power distribution control board to control the conduction of the relay. In addition, the power distribution control board can be understood as a combined circuit board of the power distribution board and the control board. The power distribution board is a 24V power supply board. The relay is arranged on the power distribution board, and the control board controls the conduction or closure of the relay on the power distribution board.
[0034] Specifically, the vehicle is divided into power distribution areas according to the configuration requirements of the vehicle, so that the multiple power distribution areas include one or more of the roof area, instrument area, berth area and chassis area. Figure 1 As shown, the embodiment of the present invention divides the entire vehicle into a roof area, an instrument area, a berth area and a chassis area, and a ceiling distribution box, an instrument distribution box, a berth distribution box and a chassis distribution box are respectively arranged in the roof area, the instrument area, the berth area and the chassis area.
[0035] See also Figure 2 As shown, any of the ceiling distribution box, instrument distribution box, berth distribution box and chassis distribution box includes: a distribution control board, a positive line, a negative line, multiple relays and a CAN bus.
[0036] One end of the positive line is connected to the positive terminal on the power distribution control board, and the other end is connected to the positive terminal of the vehicle's battery. One end of the negative line is connected to the negative terminal on the power distribution control board, and the other end is connected to the negative terminal of the vehicle's battery. Multiple relays are installed on the control distribution board, and one end of each relay is connected to the positive terminal on the distribution board and the other end is connected to the power distribution interface on the distribution control board.
[0037] The distribution box in a single distribution area replaces the original centralized distribution system's spatial layout of a single bundle of wires with four wires: the CAN bus, positive line, and negative line. This means that multiple electrical devices share the positive and negative lines, simplifying the number of wires and transmission space. Compared to the original single configuration of thin positive and negative lines, the positive line of the present invention has a larger diameter and lower resistance. While maintaining the same power, the line loss is lower than that of the previous multiple loops, achieving energy conservation and consumption reduction. Overall, multi-area distribution simplifies the number of wires and transmission space, reduces line losses to a greater extent, conserves wiring resources, and reduces vehicle weight.
[0038] Further, see Figure 1 As shown, any distribution box in the embodiment of the present invention includes three relays: an ON gear relay, an ACC gear relay and a main power switch relay. One end of the ON gear relay is connected to the positive connector on the distribution control board, and the other end is connected to the distribution interfaces a1, a2, a3...; one end of the ACC gear relay is connected to the positive connector on the distribution control board, and the other end is connected to the distribution interfaces b1, b2, b3...; the main power switch relay is connected to the positive connector on the distribution control board, and the other end is connected to the distribution interfaces c1, c2, c3...
[0039] Based on the vehicle's configuration requirements, the CAN bus transmits power distribution message instructions to the power distribution control board, controlling the relays. Typically, these instructions define the functions of the distribution box. For distribution boxes in different distribution areas, this instruction explicitly selects one of the ON position relay, ACC position relay, or main power switch relay to switch on, changing the distribution type output by the distribution box. This addresses the issue of fixed, unchangeable distribution interfaces and provides enhanced versatility.
[0040] In summary, the power distribution device in the embodiment of the present invention includes a plurality of power distribution boxes, and the plurality of power distribution boxes are correspondingly arranged in a plurality of power distribution areas of the whole vehicle, and each of the power distribution boxes includes: a power distribution control board, a positive line, a negative line, a plurality of relays and a CAN bus. On the one hand, the power distribution boxes in the plurality of power distribution areas replace the spatial layout of the original centralized power distribution which requires more wiring harnesses with four wires, namely the CAN bus, the positive line and the negative line, thereby simplifying the number of wiring harnesses and the transmission space, reducing online losses, saving wiring harness resources and reducing the weight of the whole vehicle. On the other hand, by controlling the conduction of the relay with the power distribution message instruction through the CAN bus, the power distribution type output by the power distribution box can be changed, solving the problem that the original power distribution interface is solidified and cannot be changed, and having greater versatility.
[0041] As an optional implementation, in one embodiment of the invention, see Figure 1 As shown, the electrical components in the ceiling area include a skylight, dome light, reading light, and electric curtains. The ceiling power distribution box in the ceiling area receives power distribution message instructions via the CAN bus and controls one of the ON position relay, ACC position relay, and main power switch relay on the ceiling power distribution box to conduct, distributing power to the skylight, dome light, reading light, and electric curtains.
[0042] As an optional implementation, in one embodiment of the invention, see Figure 1As shown, the electrical components in the instrument area include a water spray motor and a wiper motor. The instrument distribution box in the instrument area receives power distribution message instructions via the CAN bus and controls one of the ON position relay, ACC position relay, and main power switch relay in the instrument distribution box to conduct, distributing power to the water spray motor and wiper motor.
[0043] As an optional implementation, in one embodiment of the invention, see Figure 1 As shown, the electrical components in the sleeper area include seat function motors and sleeper reading lights. The sleeper power distribution box in the sleeper area receives power distribution message instructions via the CAN bus and controls one of the sleeper power distribution box's ON position relay, ACC position relay, and main power switch relay to conduct, distributing power to the water spray motor and wiper motor.
[0044] As an optional implementation, in one embodiment of the invention, see Figure 1 As shown, the electrical components in the chassis area include a solenoid valve and a fuel level sensor. The chassis power distribution box receives power distribution messages via the CAN bus and controls one of the chassis power distribution box's ON position relay, ACC position relay, and main power switch relay to conduct power to the water spray motor and wiper motor.
[0045] As an optional implementation, in one embodiment of the invention, the wire diameters of the positive wire and the negative wire of each distribution box are determined according to the current requirements of the electrical devices of the vehicle in the corresponding distribution area and a preset wire diameter selection list.
[0046] For example: In the top area, there are electric sunroof (optional, rated current: A), dome light (standard, rated current: B), position marker light (standard, rated current: C), auxiliary high beam (standard, rated current: D), glove box light (optional, rated current: E), electronic rearview mirror (optional, rated current: F), electronic camera (optional, rated current: G), camera cleaning device (optional, rated current H), overhead parking air conditioner (optional, rated current: I), electric deflector (optional, rated current: J)
[0047] There are many configuration combinations for electrical equipment in the top area:
[0048] Combination 1: Dome light + position marker light + auxiliary high beam (based on the electrical device requirements in the corresponding top area of the vehicle), current requirement: B+C+D, corresponding selection (based on the preset wire diameter selection list) positive and negative wire diameters are 1.5mm.
[0049] Combination 2: Dome light + position marker light + auxiliary high beam + glove box light (based on the electrical device requirements in the power distribution area on the top of the vehicle), current requirement: B+C+D+E, corresponding selection (based on the preset wire diameter selection list) positive and negative wire diameters are 2.0mm.
[0050] The embodiment of the present invention provides a power distribution system, including the above-mentioned power distribution device, see Figure 1 and Figure 2 As shown, the power distribution device includes: multiple distribution boxes, which are correspondingly located in multiple power distribution areas of the vehicle. Each distribution box includes: a power distribution control board, a positive line, a negative line, multiple relays, and a CAN bus. The power distribution system also includes: a power distribution terminal, which is connected to the CAN bus and is used to send power distribution message instructions to the CAN bus.
[0051] One end of the positive line is connected to the positive terminal on the power distribution control board, and the other end is connected to the positive terminal of the vehicle's battery. One end of the negative line is connected to the negative terminal on the power distribution control board, and the other end is connected to the negative terminal of the vehicle's battery. Multiple relays are installed on the control distribution board, and one end of each relay is connected to the positive terminal on the distribution board and the other end is connected to the power distribution interface on the distribution control board. The CAN bus is electrically connected to the distribution control board and is used to transmit power distribution message instructions sent by the distribution terminal to the distribution control board to control the conduction of the relays.
[0052] Specifically, the vehicle is divided into power distribution areas according to the configuration requirements of the vehicle, so that the multiple power distribution areas include one or more of the roof area, instrument area, berth area and chassis area. Figure 1 As shown, the embodiment of the present invention divides the entire vehicle into a roof area, an instrument area, a berth area and a chassis area, and a ceiling distribution box, an instrument distribution box, a berth distribution box and a chassis distribution box are respectively arranged in the roof area, the instrument area, the berth area and the chassis area.
[0053] See also Figure 2 As shown, any of the ceiling distribution box, instrument distribution box, berth distribution box and chassis distribution box includes: a distribution control board, a positive line, a negative line, multiple relays and a CAN bus.
[0054] One end of the positive line is connected to the positive terminal on the power distribution control board, and the other end is connected to the positive terminal of the vehicle's battery. One end of the negative line is connected to the negative terminal on the power distribution control board, and the other end is connected to the negative terminal of the vehicle's battery. Multiple relays are installed on the control distribution board, and one end of each relay is connected to the positive terminal on the distribution board and the other end is connected to the power distribution interface on the distribution control board.
[0055] The distribution box in a single distribution area replaces the original centralized distribution system's spatial layout of a single bundle of wires with four wires: the CAN bus, positive line, and negative line. This means that multiple electrical devices share the positive and negative lines, simplifying the number of wires and transmission space. Compared to the original single configuration of thin positive and negative lines, the positive line of the present invention has a larger diameter and lower resistance. While maintaining the same power, the line loss is lower than that of the previous multiple loops, achieving energy conservation and consumption reduction. Overall, multi-area distribution simplifies the number of wires and transmission space, reduces line losses to a greater extent, conserves wiring resources, and reduces vehicle weight.
[0056] Further, see Figure 1 As shown, any distribution box in the embodiment of the present invention includes three relays: an ON gear relay, an ACC gear relay and a main power switch relay. One end of the ON gear relay is connected to the positive connector on the distribution control board, and the other end is connected to the distribution interfaces a1, a2, a3...; one end of the ACC gear relay is connected to the positive connector on the distribution control board, and the other end is connected to the distribution interfaces b1, b2, b3...; the main power switch relay is connected to the positive connector on the distribution control board, and the other end is connected to the distribution interfaces c1, c2, c3...
[0057] Based on the vehicle's configuration requirements, the CAN bus transmits power distribution message instructions to the power distribution control board, controlling the relays to conduct. Typically, these instructions define the functions of the distribution box. For distribution boxes in different distribution areas, the power distribution type can be changed by explicitly selecting one of the ON position relay, ACC position relay, or main power switch relay to conduct. This addresses the issue of fixed, unchangeable distribution interfaces and provides greater versatility.
[0058] The power distribution system in the embodiment of the present invention has a power distribution device including a plurality of power distribution boxes, and the plurality of power distribution boxes are correspondingly arranged in a plurality of power distribution areas of the vehicle, and each of the power distribution boxes includes: a power distribution control panel, a positive line, a negative line, a plurality of relays, and a CAN bus. On the one hand, the power distribution boxes in the plurality of power distribution areas replace the spatial layout of the original centralized power distribution that requires a large number of wiring harnesses with four wires, namely the CAN bus, the positive line, and the negative line, thereby simplifying the number of wiring harnesses and the transmission space, reducing online losses, saving wiring harness resources, and reducing the weight of the entire vehicle. On the other hand, by controlling the conduction of the relays with power distribution message instructions via the CAN bus, the power distribution type output by the power distribution box can be changed, solving the problem that the original power distribution interface is fixed and cannot be changed, and having greater versatility.
[0059] As an optional implementation, in one embodiment of the invention, see Figure 1As shown, the electrical components in the ceiling area include a skylight, dome light, reading light, and electric curtains. The ceiling power distribution box in the ceiling area receives power distribution message instructions via the CAN bus and controls one of the ON position relay, ACC position relay, and main power switch relay on the ceiling power distribution box to conduct, distributing power to the skylight, dome light, reading light, and electric curtains.
[0060] As an optional implementation, in one embodiment of the invention, see Figure 1 As shown, the electrical components in the instrument area include a water spray motor and a wiper motor. The instrument distribution box in the instrument area receives power distribution message instructions via the CAN bus and controls one of the ON position relay, ACC position relay, and main power switch relay in the instrument distribution box to conduct, distributing power to the water spray motor and wiper motor.
[0061] As an optional implementation, in one embodiment of the invention, see Figure 1 As shown, the electrical components in the sleeper area include seat function motors and sleeper reading lights. The sleeper power distribution box in the sleeper area receives power distribution message instructions via the CAN bus and controls one of the sleeper power distribution box's ON position relay, ACC position relay, and main power switch relay to conduct, distributing power to the water spray motor and wiper motor.
[0062] As an optional implementation, in one embodiment of the invention, see Figure 1 As shown, the electrical components in the chassis area include a solenoid valve and a fuel level sensor. The chassis power distribution box receives power distribution messages via the CAN bus and controls one of the chassis power distribution box's ON position relay, ACC position relay, and main power switch relay to conduct power to the water spray motor and wiper motor.
[0063] As an optional implementation, in one embodiment of the invention, the wire diameters of the positive wire and the negative wire of each distribution box are determined according to the current requirements of the electrical devices of the vehicle in the corresponding distribution area and a preset wire diameter selection list.
[0064] For example: In the top area, there are electric sunroof (optional, rated current: A), dome light (standard, rated current: B), position marker light (standard, rated current: C), auxiliary high beam (standard, rated current: D), glove box light (optional, rated current: E), electronic rearview mirror (optional, rated current: F), electronic camera (optional, rated current: G), camera cleaning device (optional, rated current H), overhead parking air conditioner (optional, rated current: I), electric deflector (optional, rated current: J)
[0065] There are many configuration combinations for electrical equipment in the top area:
[0066] Combination 1: Dome light + position marker light + auxiliary high beam (based on the electrical device requirements in the corresponding top area of the vehicle), current requirement: B+C+D, corresponding selection (based on the preset wire diameter selection list) positive and negative wire diameters are 1.5mm.
[0067] Combination 2: Dome light + position marker light + auxiliary high beam + glove box light (based on the electrical device requirements in the power distribution area on the top of the vehicle), current requirement: B+C+D+E, corresponding selection (based on the preset wire diameter selection list) positive and negative wire diameters are 2.0mm.
[0068] An embodiment of the present invention provides a commercial vehicle, comprising the aforementioned power distribution system, the power distribution system comprising the aforementioned power distribution device, the power distribution device comprising: a plurality of distribution boxes, the plurality of distribution boxes being correspondingly arranged in a plurality of power distribution areas of the entire vehicle, each of the distribution boxes comprising: a power distribution control board, a positive line, a negative line, a plurality of relays and a CAN bus.
[0069] One end of the positive line is connected to the positive terminal on the power distribution control board, and the other end is connected to the positive terminal of the battery of the whole vehicle. One end of the negative line is connected to the negative terminal on the power distribution control board, and the other end is connected to the negative terminal of the battery of the whole vehicle. A plurality of relays are arranged on the control distribution board, and one end of each relay is connected to the positive terminal on the power distribution board, and the other end is connected to the power distribution interface on the power distribution control board. The CAN bus is electrically connected to the power distribution control board, and the CAN bus is used to transmit power distribution message instructions to the power distribution control board to control the conduction of the relay. In addition, the power distribution control board can be understood as a combined circuit board of the power distribution board and the control board. The power distribution board is a 24V power supply board. The relay is arranged on the power distribution board, and the control board controls the conduction or closure of the relay on the power distribution board.
[0070] Specifically, the vehicle is divided into power distribution areas according to the configuration requirements of the vehicle, so that the multiple power distribution areas include one or more of the roof area, instrument area, berth area and chassis area. Figure 1 As shown, the embodiment of the present invention divides the entire vehicle into a roof area, an instrument area, a berth area and a chassis area, and a ceiling distribution box, an instrument distribution box, a berth distribution box and a chassis distribution box are respectively arranged in the roof area, the instrument area, the berth area and the chassis area.
[0071] See also Figure 2 As shown, any of the ceiling distribution box, instrument distribution box, berth distribution box and chassis distribution box includes: a distribution control board, a positive line, a negative line, multiple relays and a CAN bus.
[0072] One end of the positive line is connected to the positive terminal on the power distribution control board, and the other end is connected to the positive terminal of the vehicle's battery. One end of the negative line is connected to the negative terminal on the power distribution control board, and the other end is connected to the negative terminal of the vehicle's battery. Multiple relays are installed on the control distribution board, and one end of each relay is connected to the positive terminal on the distribution board and the other end is connected to the power distribution interface on the distribution control board.
[0073] The distribution box in a single distribution area replaces the original centralized distribution system's spatial layout of a single bundle of wires with four wires: the CAN bus, positive line, and negative line. This means that multiple electrical devices share the positive and negative lines, simplifying the number of wires and transmission space. Compared to the original single configuration of thin positive and negative lines, the positive line of the present invention has a larger diameter and lower resistance. While maintaining the same power, the line loss is lower than that of the previous multiple loops, achieving energy conservation and consumption reduction. Overall, multi-area distribution simplifies the number of wires and transmission space, reduces line losses to a greater extent, conserves wiring resources, and reduces vehicle weight.
[0074] Further, see Figure 1 As shown, any distribution box in the embodiment of the present invention includes three relays: an ON gear relay, an ACC gear relay and a main power switch relay. One end of the ON gear relay is connected to the positive connector on the distribution control board, and the other end is connected to the distribution interfaces a1, a2, a3...; one end of the ACC gear relay is connected to the positive connector on the distribution control board, and the other end is connected to the distribution interfaces b1, b2, b3...; the main power switch relay is connected to the positive connector on the distribution control board, and the other end is connected to the distribution interfaces c1, c2, c3...
[0075] Based on the vehicle's configuration requirements, the CAN bus transmits power distribution message instructions to the power distribution control board, controlling the relays. Typically, these instructions define the functions of the distribution box. For distribution boxes in different distribution areas, this instruction explicitly selects one of the ON position relay, ACC position relay, or main power switch relay to switch on, changing the distribution type output by the distribution box. This addresses the issue of fixed, unchangeable distribution interfaces and provides enhanced versatility.
[0076] The power distribution device of the commercial vehicle in the embodiment of the present invention includes multiple distribution boxes, and the multiple distribution boxes are correspondingly arranged in multiple distribution areas of the entire vehicle. Each distribution box includes: a distribution control panel, a positive line, a negative line, multiple relays and a CAN bus. On the one hand, the distribution boxes in the multiple distribution areas replace the spatial layout of the original centralized power distribution that requires more wiring harnesses with four wires: the CAN bus, the positive line and the negative line, simplifying the number of wiring harnesses and the transmission space, reducing online losses, saving wiring harness resources, and reducing the weight of the entire vehicle. On the other hand, by controlling the conduction of the relays with distribution message instructions through the CAN bus, the distribution type output by the distribution box can be changed, solving the problem that the original distribution interface is fixed and cannot be changed, and having greater versatility.
[0077] As an optional implementation, in one embodiment of the invention, the wire diameters of the positive wire and the negative wire of each distribution box are determined according to the current requirements of the electrical devices of the vehicle in the corresponding distribution area and a preset wire diameter selection list.
[0078] For example: In the top area, there are electric sunroof (optional, rated current: A), dome light (standard, rated current: B), position marker light (standard, rated current: C), auxiliary high beam (standard, rated current: D), glove box light (optional, rated current: E), electronic rearview mirror (optional, rated current: F), electronic camera (optional, rated current: G), camera cleaning device (optional, rated current H), overhead parking air conditioner (optional, rated current: I), electric deflector (optional, rated current: J)
[0079] There are many configuration combinations for electrical equipment in the top area:
[0080] Combination 1: Dome light + position marker light + auxiliary high beam (based on the electrical device requirements in the corresponding top area of the vehicle), current requirement: B+C+D, corresponding selection (based on the preset wire diameter selection list) positive and negative wire diameters are 1.5mm.
[0081] Combination 2: Dome light + position marker light + auxiliary high beam + glove box light (based on the electrical device requirements in the power distribution area on the top of the vehicle), current requirement: B+C+D+E, corresponding selection (based on the preset wire diameter selection list) positive and negative wire diameters are 2.0mm.
[0082] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper" and "lower" is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.
[0083] It should be noted that, in the present invention, relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.
[0084] The foregoing description is intended only to provide specific embodiments of the present invention, which will enable those skilled in the art to understand and implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not intended to be limited to the embodiments shown herein, but is to be construed in the widest possible manner consistent with the principles and novel features of the present invention.
Claims
1. A power distribution device, characterized in that: include: Multiple distribution boxes, each of which is correspondingly arranged in multiple distribution areas of the vehicle, including the ceiling area, instrument area, berth area and chassis area, each of which includes: -Power distribution control panel; - a positive wire, one end of which is connected to the positive terminal on the power distribution control board and the other end is connected to the positive terminal of the battery of the vehicle; - a negative electrode line, one end of which is connected to the negative electrode connector on the power distribution control board and the other end is connected to the negative electrode of the battery of the vehicle; - Multiple relays, which are provided on the power distribution control board, with one end of each relay connected to the positive terminal on the power distribution control board and the other end connected to the power distribution interface of the power distribution control board; the multiple relays include an ON gear relay, an ACC gear relay, and a main power switch gear relay, with one end of the ON gear relay connected to the positive terminal on the power distribution control board and the other end connected to the power distribution interfaces a1, a2, a3, etc.; one end of the ACC gear relay is connected to the positive terminal on the power distribution control board and the other end connected to the power distribution interfaces b1, b2, b3, etc.; the main power switch relay is connected to the positive terminal on the power distribution control board and the other end connected to the power distribution interfaces c1, c2, c3, etc.; -CAN bus, which is electrically connected to the power distribution control board. The CAN bus is used to transmit power distribution message instructions to the power distribution control board to control the conduction of the relay. The power distribution message instructions define the functions of the distribution box. For distribution boxes in different power distribution areas, the power distribution message instructions are used to clearly select one of the ON gear relay, ACC gear relay and main power switch relay to be turned on, thereby changing the power distribution type output by the distribution box.
2. The power distribution device according to claim 1, wherein: The electrical devices in the ceiling area include skylights, ceiling lights, reading lights and electric curtains.
3. The power distribution device according to claim 1, wherein: The electrical components in the instrument area include a water spray motor and a wiper motor.
4. The power distribution device according to claim 1, wherein: The electrical components in the berth area include seat function motors and berth reading lights.
5. The power distribution device according to claim 1, wherein: The electrical components in the chassis area include a solenoid valve and an oil level sensor.
6. The power distribution device according to claim 1, wherein: The wire diameters of the positive wire and the negative wire of each distribution box are determined according to the current requirements of the electrical components of the vehicle in the corresponding distribution area and a preset wire diameter selection list.
7. A power distribution system, characterized in that: The power distribution device according to any one of claims 1 to 6 further comprises: A power distribution terminal is connected to the CAN bus, and is used to send power distribution message instructions to the CAN bus.
8. A commercial vehicle, characterized in that: Comprising the power distribution system as claimed in claim 7.
Citation Information
Patent Citations
Passenger train integrated form block terminal
CN208069572U
Vehicular power distribution system
US20160059708A1