CN101327768B - Unchanging wiring harness based on automotive intelligent electrical system - Google Patents

Abstract

The invention relates to an invariable wire harness based on an automobile intelligent electrical system, which belongs to the technical field of automobile wire harness design. And only 5 CAN signal lines CAN constant extension line, one power line harness only contains power line, multiple CAN interface line harnesses corresponding to the number of CAN nodes, many lines contain and only contain 5 LIN power lines and The LIN invariant trunk harness of the signal line, several LIN invariant extension lines containing and only containing 5 LIN power and signal lines, and a plurality of LIN interface harnesses corresponding to the number of LIN nodes; the invariant harness of the present invention The wires running in the same place are classified and packaged into several wire harnesses according to certain rules. The structure of the wire harness formed in this way is relatively simple, and the standardization of design and manufacturing can be realized.

Description

Unchanging wiring harness based on automotive intelligent electrical system

technical field

The invention belongs to the technical field of automobile wire harness design, in particular to a structural design of a constant wire harness.

Background technique

In the traditional automotive electrical system, each electrical appliance distributed throughout the car is connected to the driver's switch by two wires, so the wiring harness contains a large number of wires.

The automotive intelligent electrical system is an automotive electrical system that intelligently transforms all electrical appliances on the car, and then connects them with the CAN/LIN secondary bus. In the smart electrical system, each electrical appliance and switch is connected to the bus distributed throughout the vehicle, which greatly simplifies the wiring harness and saves the cost of wiring harness design, manufacturing and assembly.

Ordinary smart electrical wiring harness packs the wires running in the same place into a whole wiring harness, so the wiring harness is composed of complex wires, and the shape is not simple, beautiful and standardized.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art, and propose a new type of invariable wire harness design based on the automotive intelligent electrical system. Several wire harnesses, the wire harness structure formed in this way is relatively simple, and can realize the standardization of design and manufacture.

The present invention proposes an invariable wiring harness based on an automotive intelligent electrical system, which is characterized in that the invariable wiring harness includes: a CAN invariable trunk harness that contains only 5 CAN signal lines inside, and a plurality of internally containing and only A CAN constant extension line including 5 CAN signal lines, a power wiring harness including only power lines, multiple CAN interface wiring harnesses corresponding to the number of CAN nodes, multiple internal and only 5 LIN power and signal lines The LIN constant trunk harness, several LIN constant extension lines that contain only 5 LIN power and signal lines inside, and a number of LIN interface harnesses corresponding to the number of LIN nodes; the connection relationship is: the CAN The constant trunk wire harness is connected to the CAN interface wire harness directly through the CAN constant extension line; the power wire harness is connected to the CAN interface wire harness or the LIN constant trunk wire harness; the LIN constant trunk wire harness is connected to the CAN interface wire harness and the power wire harness, and Connect via LIN constant extension cable or directly with LIN interface harness.

Features and beneficial effects of the present invention:

The CAN constant trunk harness 1, CAN constant extension line 3, LIN constant trunk harness 5 and LIN constant extension line 6 at the core of the present invention are all 5 unified wiring harnesses, so they are also called constant wiring harnesses. .

The invention separates the design of the main line, the extension line and the branch line; separates the CAN network signal wiring harness from the power wiring harness; and simplifies the design of the main line by using the extension line of standardized length.

The invention can be widely applied to various vehicles based on the automobile intelligent electrical system.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the constant wiring harness of the present invention.

Fig. 2 is a schematic structural diagram of the CAN constant trunk harness of the present invention.

Fig. 3 is a schematic diagram of the structure of the LIN invariant trunk wire harness of the present invention.

Fig. 4 is a schematic structural diagram of a section of CAN constant trunk harness according to an embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a section of power wiring harness according to an embodiment of the present invention.

FIG. 6 is a schematic structural diagram of a LIN invariant trunk wire bundle according to an embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a CAN interface wiring harness according to an embodiment of the present invention.

Fig. 8 is a schematic structural diagram of a LIN interface wire harness according to an embodiment of the present invention.

Detailed ways

The drawings and embodiments of the structure of the constant wire harness structure based on the automobile intelligent electrical system proposed by the present invention are described in detail as follows:

The constant wiring harness proposed by the present invention is based on a CAN-LIN secondary hybrid network. The CAN network is the backbone network of the vehicle, and several LIN subnets are locally distributed and connected to the CAN network through a gateway to transmit information.

The overall structure of the invariable wiring harness proposed by the present invention is shown in Figure 1, including a CAN invariable trunk harness 1, multiple CAN invariant extension lines 3, a power harness 2, multiple CAN interface harnesses 4, and multiple LIN invariant There are seven types of trunk wire harness 5 , multiple LIN constant extension wires 6 and multiple LIN interface wire harnesses 7 . In fact, considering the convenience of assembly, the above-mentioned wire harness may be truncated into two or three wire harnesses connected by connectors to realize the same function.

The topological structure of the CAN invariant trunk harness 1 of the present invention is a linear structure with multiple forks, as shown in FIG. 2 , the number of forks and the positions of each fork are determined according to specific electrical appliances and their positions. The length of each bifurcation is uniform and relatively short, generally 50-300mm. Each bifurcation is connected with a CAN constant joint 8, which is connected with the CAN constant extension line 3 or directly connected with the CAN interface wiring harness 4. The two ends of the CAN constant trunk wire harness 1 are connected with a terminal resistor connector 11 for use with a terminal resistor connected to the CAN network.

The quantity of the CAN constant extension line 3 of the present invention corresponds to the CAN node, and its topological shape is a simple straight line, as shown in Figure 1, both ends are connected with CAN constant joints 8, respectively used to connect the CAN constant trunk line Harness 1 and CAN interface harness 4. The length of the CAN constant extension line 3 is selected according to the distance from the specific CAN node to the CAN constant trunk harness 1. In the actual design, several different length standards can be set to flexibly select the required length, or it can not be selected according to the situation. .

The CAN constant main line 1 and the CAN constant extension line 3 form the signal wiring harness of the upper CAN network, which contains and only contains 5 unified CAN signal lines, namely: CAN_H signal line, CAN_L signal line, and CAN The normal power, controllable power and ground wire of the controller.

The number of CAN interface wiring harness 4 corresponds to the CAN node, and its structure is shown in Figure 1. CAN nodes include CAN controller nodes and CAN gateway nodes. The CAN controller node has a CAN controller connector, and may also have a CAN electrical connector; the CAN gateway node has only one CAN controller connector. The CAN interface wire harness 4 includes two types, one is that the CAN interface wire harness 4 connected to the CAN controller node contains power lines and signal wires, and the CAN interface wire harness 4 has four terminals respectively connected with CAN electrical connectors 14, CAN Controller connector 13, CAN constant connector 8 and power connector 10 are used to connect with CAN electrical connector 14 of CAN node, CAN controller connector 13, CAN constant trunk harness 1 and power harness 2 respectively, wherein CAN electrical connector 14 and power connector 10 are optional according to specific electric appliances. Another CAN interface wire harness 4 connected to the CAN gateway node only includes signal wires. The CAN interface wire harness 4 has three terminals respectively connected with a LIN constant connector 9, a CAN controller connector 13 and a CAN constant connector 8. A connector for connecting the LIN constant trunk harness 5, the CAN gateway node and the CAN constant extension line 3 respectively.

The number of LIN invariant trunk bundles 5 corresponds to the number of LIN subnets. The topological shape of the LIN invariant trunk wire harness 5 is linear with multiple forks, as shown in FIG. 3 , and the location of the forks is determined according to the location of specific electrical appliances. The length of each bifurcation is uniform and relatively short, generally 50-300mm. The forks include a master fork 51 and several slave forks 52 . The end of the main fork 51 is connected with a LIN constant joint 9 connected with the CAN interface wiring harness 4 of the gateway, and a power joint 10 is connected with the power wiring harness 2 . A LIN constant connector 9 is connected to the end of each slave branch 52 for connecting with the LIN constant extension line 6 or directly connecting with the LIN interface harness 7 .

The number of LIN constant extension lines 6 corresponds to the CAN nodes. Its topological shape is a simple straight line, as shown in FIG. 1 , both ends are connected with LIN constant connectors 9 , which are respectively used to connect the LIN constant trunk harness 5 and the LIN interface harness 7 . The length of the LIN constant extension line 6 is selected according to the distance from the concrete LIN node to the LIN constant trunk harness 5, and several different length standards can be set to flexibly select the required length during design, or it can not be selected according to the situation.

The LIN constant trunk wire harness 5 and the LIN constant extension wire 6 form the power and signal wire harness of the lower-level LIN network, which contains and only contains 5 unified signal wires and power wires used in the LIN network, which are respectively: LIN signal Line, digital power and digital ground for LIN controller power, and power power and power ground for LIN electrical appliances.

The number of LIN interface harnesses 7 corresponds to the CAN nodes. It is the power and signal interface of LIN electrical appliances and controllers to the LIN network, including both power lines and signal lines. The structure of the LIN interface wiring harness 7 is shown in Figure 1, including three terminals respectively connected with an electrical connector 14, a controller connector 13 and a LIN constant connector 8, which are used to connect with the electrical connector 14 and the controller connector 13 of the LIN node respectively. It is connected to the LIN constant trunk harness 5.

The power wire harness 2 of the present invention provides power for all CAN nodes and LIN subnets, and only includes power wires and ground wires in the wire harness; its topology is a linear structure with bifurcations, and the bifurcation ends are connected with power The connector 10 is respectively connected to the corresponding power connectors of each CAN interface wire harness and the LIN constant trunk wire harness.

Example

The application of the constant wire harness of the present invention on a certain bus is shown in Fig. 4-Fig. 8, and the explanations are as follows in conjunction with each figure:

This embodiment includes 1 CAN trunk harness, 23 CAN constant extension lines, 23 CAN interface harnesses, 1 power harness, 7 LIN constant trunk harnesses, 61 LIN constant extension lines, and 61 LIN interface harnesses . Among them, the CAN constant trunk harness and the CAN constant extension line contain and only contain 5 unified CAN signal cables, namely: CAN_H signal line, CAN_L signal line, and the normal power supply for the CAN controller , Controllable power and ground. Both the LIN constant trunk harness and the LIN constant extension line contain and only contain 5 unified signal lines and power lines used in the LIN network, which are: LIN signal line, digital power supply for LIN controller and power line. Digital ground, as well as the power supply and power ground for LIN electrical appliances.

The 1 CAN constant trunk wire harness of this embodiment is divided into two sections for the convenience of assembly, and is connected by an intermediate indirect plug-in 12. The topological structure of one section is shown in Figure 4. Forks, the intervals of each fork are 2800, 250, 180, 130, 100, 100, 100, 160, 150, 1000, 100, 100, 100, 100mm, and the length of each fork is 100mm. The model of the connector sheath of the 14 CAN constant connectors 8 is DJ7061A-2.8-20, the model of the connector sheath of the terminal resistance connector 11 is DJ7021-2.8-10, and the model of the connector sheath of the intermediate connector is DJ7061A-2.8- 20.

The 23 CAN constant extension lines of the present embodiment have three standards of 200mm, 400mm and 800mm in length. The connector sheath models of the CAN constant connector 8 at both ends of the wiring harness are DJ7061A-2.8-20 and DJ7061A-2.8-10 respectively.

One power wiring harness in this embodiment is divided into two sections for ease of assembly, connected by an intermediate connector 12 , and the topology of one section is shown in FIG. 5 . The total length of this section of wire harness is about 5400mm, and there are 7 bifurcations distributed up and down. 300, 300, 100mm. The connector sheath models of the seven power connectors 10 are all DJ7021A-6.3-21. The model of the connector sheath of a grounding joint 13 is DJ431-8D, and the model of the intermediate connector 12 is DJ7041-9.5-211.

The topological structure of one of the 7 LIN invariant trunk wire bundles in this embodiment is shown in Figure 6. The total length of this wire harness is 7950 mm, and there are 14 bifurcations distributed up and down, and the intervals of each bifurcation are 100, 700, and 100 mm respectively. , 300, 3300, 1400, 1550, 400, 100mm, the length of each branch is 100mm. The connector sheath models of the 14 LIN constant connectors 9 are all DJ7061A-2.8-20. The connector sheath model of one power connector 10 is DJ7011A-6.3-21. The connector sheath model of a grounding joint 13 is DJ431-5B.

The topological structure of one of the 23 CAN interface wiring harnesses in this embodiment is shown in FIG. 7 . The length from the bifurcation point to the controller connector 13 is 100mm, the length from the bifurcation point to the electrical connector 14 is 300mm, and the length from the bifurcation point to the CAN constant connector 8 and the power connector 10 is 200mm. Among them, the model of the connector sheath of the CAN constant joint 8 is DJ7061A-2.8-10, the model of the connector sheath of the power connector 10 is DJ7021A-6.3-11, and the model of the connector sheath of the controller connector 13 is a special connector. The model of the plug-in and electrical connector 14 is DJ7091-2.3-21.

The 61 LIN constant extension lines of the present embodiment have three standards of 200mm, 400mm and 800mm in length. The connector sheaths of the LIN constant connector 9 at both ends of the wiring harness are DJ7061A-2.8-20 and DJ7061A-2.8-10 respectively.

The topological structure of one of the 61 LIN interface harnesses in this embodiment is shown in FIG. 8 . The length from the bifurcation point to the LIN constant connector 9, the controller connector 13 and the electrical connector 14 is 100mm. The model of the connector sheath of the LIN constant connector 9 is DJ7061A-2.8-10, the model of the connector sheath of the controller connector 13 is a special connector, and the model of the electrical connector 14 is DJ7091-2.3-21.

Claims (10)

1. constant wire harness based on the vehicle intelligent electric appliance system, it is characterized in that, this constant wire harness comprises: the constant main line bundle of CAN that inside comprises and only comprise 5 CAN signal wire (SW)s everywhere, many inside comprise and only comprise the constant extended line of CAN of 5 CAN signal wire (SW)s everywhere, article one, the power wire harness that only comprises power line and ground wire, many and the corresponding CAN interface of CAN number of nodes wire harness, many the constant main line bundles of LIN that inside comprises and only comprise 5 LIN power and signal wire (SW) everywhere, some inside comprise and only comprise the constant extended line of LIN of 5 LIN power and signal wire (SW) everywhere, many and the corresponding LIN interface of LIN number of nodes wire harness; Described CAN node comprises CAN controller node and CAN gateway node, and described CAN interface wire harness comprises CAN interface wire harness that links to each other with the CAN controller node and the CAN interface wire harness that links to each other with the CAN gateway node; Its annexation is: the constant main line bundle of described CAN passes through the constant extended line of CAN or directly is connected with CAN interface wire harness; Described power wire harness is connected with the constant main line bundle of LIN with the described CAN interface wire harness that links to each other with the CAN controller node; The constant main line bundle of described LIN connects the CAN interface wire harness that links to each other with the CAN gateway node, also is connected with LIN interface wire harness by the constant extended line of LIN.

2. constant according to claim 1 wire harness, it is characterized in that the constant main line harness shape of described CAN is the linear structure that has a plurality of bifurcateds, bifurcated length is unified, each minute sticks and all is connected to the constant joint of CAN, uses to link to each other with the constant extended line of CAN or directly link to each other with CAN interface wire harness; Two of the constant main line bundle of CAN is connected to the terminal resistance joint, is used to connect the terminal resistance of CAN network.

3. constant according to claim 1 wire harness, it is characterized in that the quantity of the constant extended line of described CAN is corresponding with the CAN node, its topology is simple linear pattern, two all is connected to the constant joint of CAN, is used for connecting constant main line bundle of CAN and CAN interface wire harness respectively.

4. as constant wire harness as described in the claim 1,2 or 3, it is characterized in that described 5 CAN signal wire (SW)s are respectively: the CAN_H signal wire (SW), the CAN_L signal wire (SW), and for normal open electricity, controlled electricity and the ground wire of CAN controller electricity consumption.

5. constant according to claim 1 wire harness, it is characterized in that, described CAN interface wire harness comprises two types, a kind of is to comprise power line and signal wire (SW) in the CAN interface wire harness that links to each other with the CAN controller node, this CAN interface wire harness has four terminations and is connected to CAN electrical connector, CAN controller joint, the constant joint of CAN and power joint respectively, in order to respectively with the CAN electrical connector and the CAN controller joint of CAN controller node, the constant main line bundle of CAN links to each other with the power wire harness; Only comprise signal wire (SW) in the another kind of CAN interface wire harness that links to each other with the CAN gateway node, this CAN interface wire harness has three terminations and is connected to the constant joint of LIN, CAN controller joint, three joints of the constant joint of CAN respectively, in order to connect the constant main line bundle of LIN, CAN gateway node and the constant extended line of CAN respectively.

6. constant according to claim 1 wire harness, it is characterized in that, the topology of the constant main line bundle of described LIN is to have a main bifurcated and a plurality of linear structure from bifurcated, the length of each section bifurcated is unified, wherein, main bifurcated termination is connected to a constant joint of LIN and links to each other with the CAN interface wire harness of CAN gateway node, and a power joint is connected with the power wire harness; Respectively from the bifurcated termination, all be connected to a constant joint of LIN,, perhaps directly link to each other with LIN interface wire harness in order to link to each other with the constant extended line of LIN.

7. constant according to claim 1 wire harness is characterized in that the quantity of the constant extended line of described LIN is corresponding with the LIN node; Its topology is a linear pattern, and two terminations of this straight line all are connected to the constant joint of LIN, is used for connecting constant main line bundle of LIN and LIN interface wire harness respectively.

8. as constant wire harness as described in the claim 1,6 or 7, it is characterized in that, the constant extended line of constant main line bundle of described LIN and LIN is formed the power and signal wire harness of the LIN of lower floor network, this wire harness inside all comprises and only comprises 5 unified LIN networks used signal wire (SW) and power line everywhere, be respectively: the LIN signal wire (SW), for the numeral electricity of LIN controller electricity consumption and digitally, and for the power electricity and the Power Groud of LIN electrical equipment electricity consumption.

9. constant according to claim 1 wire harness is characterized in that the quantity of described LIN interface wire harness is corresponding with the LIN node, comprises power line and signal wire (SW) in this wire harness; This LIN interface wire harness comprises that three terminations are connected to electrical connector, controller joint and the constant joint of LIN respectively, in order to respectively with the constant main line Shu Xianglian of electrical connector, controller joint and LIN of LIN node.

10. constant according to claim 1 wire harness is characterized in that, described power wire harness is used to all CAN nodes and LIN subnet that the power electricity consumption is provided, and only comprises power line and ground wire in this wire harness; Its topological structure is the linear structure that has bifurcated, and this bifurcated termination that has the linear structure of bifurcated is connected to the power joint, links to each other with the cooresponding power joint of the constant main line bundle of LIN with each bar CAN interface wire harness respectively.

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