Program writing wire harness of automatic transmission

Abstract

The utility model discloses an automatic transmission program flashing wire harness. A controller wire harness plug is connected with a plurality of CAN1 wires, a plurality of CAN2 wires, a plurality of power ground wires and a plurality of power positive wires. The CAN1 wires are converged and connected to the CAN1 connector, the CAN2 wires are converged and connected to the CAN2 connector, the power ground wires are converged and connected to the power ground connector, and the power positive wires are converged and connected to the power positive connector. The program flashing wire harness is simple and effective in structure, has the characteristics of light weight, small size, low cost and the like, and can realize the functions of controller program flashing, message monitoring and the like. And the length of the wire harness can be changed according to the change of use scenes, thereby facilitating use. The method can improve the program flashing efficiency during controller testing and production offline, and can solve the problem of accidental dead flashing of the controller.

Description

Technical Field

[0001] The utility model belongs to the technical field of transmission matching wire harnesses, and in particular relates to an automatic transmission program flashing wire harness. Background Art

[0002] Compared with manual transmissions, automatic transmissions require program flashing and automated offline test runs before they are offline. Because program flashing generally takes 2-3 minutes, when the production cycle is high, the controller needs to be flashed in advance, and only a test run is required before the vehicle is offline. In market applications and maintenance services, if program flashing is required, interference from other nodes in the vehicle CAN network, accidental loosening of the USB port, or accidental power failure of the vehicle will cause the controller to be flashed to death. At this time, a simple and convenient method is needed to re-flash the controller and wake up the controller. During the program flashing process, there is no dedicated program flashing harness for controller testing, and engineers are often required to manually wire, which is prone to the problem of virtual connection of the harness. The controller needs to be flashed in advance when the test bench is offline. Without a dedicated program flashing harness, the production efficiency is low. In the maintenance service, the controller may be flashed to death, and a dedicated program flashing harness is required to re-flash the controller and wake up the controller without the vehicle environment.

[0003] The patent publication number is CN219801440U, and the name is a patent application for a transmission calibration diagnosis and flashing harness. The vehicle harness is connected to the plug connector through the first connecting harness and the transmission harness, and the second connecting harness is connected to the DB9 female connector. When the DB9 female connector is connected to the diagnostic instrument, it is used for TCU diagnosis or program flashing; when the DB9 female connector is connected to CANape, it is used for TCU data calibration. This patent application can avoid the problem of providing power supply for the controller, but it cannot avoid the problem of accidental flashing of the controller. Utility Model Content

[0004] In order to overcome the problems existing in the above-mentioned prior art, the purpose of the utility model is to provide an automatic transmission program flashing wiring harness, which can solve the problem of accidental flashing of the controller, facilitate the program flashing of the controller, and improve work efficiency.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A wiring harness for flashing an automatic transmission program comprises a controller wiring harness plug, a CAN1 connector, a CAN2 connector, a power ground connector and a power positive connector. The controller wiring harness plug is connected to a plurality of CAN1 lines, a plurality of CAN2 lines, a plurality of power ground lines and a plurality of power positive lines; the CAN1 lines are connected to the CAN1 connector, the CAN2 lines are connected to the CAN2 connector, the power ground lines are connected to the power ground connector, and the power positive lines are connected to the power positive connector.

[0007] Optionally, the power attribute of the power ground line is KL31.

[0008] Optionally, the number of the power ground wires is two.

[0009] Optionally, the positive power line includes a KL30 positive power line and a KL15 positive power line.

[0010] Optionally, the number of the KL30 positive power lines is two, and the number of the KL15 positive power line is one.

[0011] Optionally, a switch is connected to the positive line of the KL15 power supply.

[0012] Optionally, the number of the CAN1 lines is two.

[0013] Optionally, the number of the CAN2 lines is two.

[0014] Optionally, the CAN2 line includes a CAN2 high resistance line and a CAN2 low resistance line.

[0015] Optionally, the resistance difference between the CAN2 high resistance line and the CAN2 low resistance line is 120Ω.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The utility model has a simple and effective structure of program flashing harness, and has the characteristics of light weight, small size and low cost, and can realize functions such as controller program flashing and message monitoring. And the length of the harness can be changed according to the change of usage scene, which is convenient for use. It can improve the efficiency of flashing program during controller testing and production offline, and can solve the problem of accidental flashing of controller.

[0018] Furthermore, the CAN line of the program flashing harness of the utility model is independently designed to eliminate interference from other nodes in the vehicle CAN network, and the program flashing process is stable and reliable.

[0019] Furthermore, the program flashing harness of the utility model adds a KL15 electric switch design to simulate the power-on and power-off process of the vehicle key and truly restore the usage environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are for explanation purposes only and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the components in the drawings are only for illustration purposes to help understand the present invention and are not intended to specifically limit the shapes and proportional dimensions of the components of the present invention. In the drawings:

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Among them, 1-controller wiring harness plug; 2-CAN1 connector; 21, CAN1 line; 3-CAN2 connector; 31, CAN2 line; 4-power ground connector; 41, power ground wire; 5-power positive connector; 51, KL30 power positive wire; 52, KL15 power positive wire; 6-switch. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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 creative work should fall within the scope of protection of the present invention.

[0024] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0026] The utility model is described in detail below in conjunction with the accompanying drawings.

[0027] like Figure 1As shown, an automatic transmission program flashing harness of the utility model includes a controller harness plug 1, a CAN1 connector 2, a CAN2 connector 3, a power ground connector 4 and a power positive connector 5. The controller harness plug 1 is connected with a plurality of CAN1 lines 21, a plurality of CAN2 lines 31, a plurality of power ground lines 41 and a plurality of power positive lines; the CAN1 lines 21 are connected to the CAN1 connector 2, the CAN2 lines 31 are connected to the CAN2 connector 3, the power ground lines are connected to the power ground connector 4, and the power positive lines are connected to the power positive connector 5. The power positive lines include a KL30 power positive line 51 and a KL15 power positive line 52.

[0028] Specifically, the tail of the controller harness plug 1 is connected to 9 harnesses, including: 2 power ground wires 41 , 2 KL30 power positive wires 51 , 1 KL15 power positive wire 52 , 2 CAN1 wires 21 and 2 CAN2 wires 31 .

[0029] The two KL31 power ground wires 41 merge into one output wire, namely the power ground connector 4 .

[0030] The two KL30 power positive wires 51 are finally merged into one output wire, which is the power positive connector 5.

[0031] Specifically, the power attribute of the power ground line 41 is KL31.

[0032] Specifically, the KL15 power positive line 52 is connected to a switch 6 .

[0033] The CAN2 line 31 includes a CAN2 high resistance line and a CAN2 low resistance line, and the resistance difference between the CAN2 high resistance line and the CAN2 low resistance line is 120Ω.

[0034] Optionally, the CAN1 connector 2 and the CAN2 connector 3 are both DB9 type connectors.

[0035] Specifically, the CAN1 connector 2 is the public CAN of the whole vehicle, which can test whether the message sending function of the controller is normal; the CAN2 connector 3 is the private CAN of the transmission, which can perform program flashing and message monitoring.

[0036] Example

[0037] In this embodiment, the power positive connector 5 is connected to a 24V power supply.

[0038] The utility model discloses an automatic transmission program flashing wiring harness, when used:

[0039] Connect the controller harness plug 1 to the controller and fasten the connector.

[0040] Connect the power ground connector 4 to the 24V power ground connector 4.

[0041] Set the switch 6 to the off state and connect the positive power connector 5 to the power supply.

[0042] Connect the program flashing tool to the CAN2 connector 3. When starting the program flashing, turn on the switch 6 as needed, connect the KL15 power positive line 52 to the controller, and let the controller start flashing the program;

[0043] After the program is flashed, the switch 6 is turned off to disconnect the power positive connector 5 and the power ground connector 4.

[0044] When message monitoring is required, after correctly connecting the power positive connector 5 and the power ground connector 4, turn on the switch 6, connect the CAN message monitoring tool to the CAN1 connector 2, and perform message monitoring.

[0045] Unless otherwise specified, the device elements involved in the above embodiments are all conventional device elements, and the structural settings, working modes or control modes involved are all conventional settings, working modes or control modes in the art unless otherwise specified.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. An automatic transmission program flashing wiring harness, characterized in that: The invention comprises a controller wiring harness plug (1), a CAN1 connector (2), a CAN2 connector (3), a power ground connector (4) and a power positive connector (5); the controller wiring harness plug (1) is connected to a plurality of CAN1 lines (21), a plurality of CAN2 lines (31), a plurality of power ground lines (41) and a plurality of power positive lines; the CAN1 lines (21) are connected to the CAN1 connector (2), the CAN2 lines (31) are connected to the CAN2 connector (3), the power ground lines are connected to the power ground connector (4), and the power positive lines are connected to the power positive connector (5).

2. The automatic transmission program flashing wiring harness according to claim 1, characterized in that: The power attribute of the power ground line (41) is KL31.

3. The automatic transmission program flashing wiring harness according to claim 1, characterized in that: The number of the power ground wires (41) is two.

4. The automatic transmission program flashing wiring harness according to claim 1, characterized in that: The positive power line includes a KL30 positive power line (51) and a KL15 positive power line (52).

5. The automatic transmission program flashing wiring harness according to claim 4, characterized in that: The number of the KL30 positive power lines (51) is two, and the number of the KL15 positive power line (52) is one.

6. The automatic transmission program flashing wiring harness according to claim 4, characterized in that: The KL15 power positive line (52) is connected to a switch (6).

7. The automatic transmission program flashing wiring harness according to claim 1, characterized in that: The number of the CAN1 lines (21) is two.

8. The automatic transmission program flashing wiring harness according to claim 1, characterized in that: The number of the CAN2 lines (31) is two.

9. The automatic transmission program flashing wiring harness according to claim 1, characterized in that: The CAN2 line (31) includes a CAN2 high resistance line and a CAN2 low resistance line.

10. The automatic transmission program flashing wiring harness according to claim 9, characterized in that: The resistance difference between the CAN2 high resistance line and the CAN2 low resistance line is 120Ω.

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