Integrated cooling type automobile wire harness

Abstract

The application belongs to the technical field of automobile parts, and discloses an integrated cooling automobile wire harness, which comprises a connecting wire harness, the outer surface of the connecting wire harness is provided with a heat insulation sleeve, the end of the connecting wire harness is provided with a connecting sleeve, the outer surface of the connecting sleeve is fixedly provided with a first temperature sensor, one side of the heat insulation sleeve is provided with a cooling cylinder, the inside of the cooling cylinder is provided with a piston cavity, and the piston cavity is connected with the heat insulation sleeve through a connecting pipe. The integrated cooling automobile wire harness takes the cooling cylinder as the core of the whole heat dissipation system, is communicated with the cavity of the heat insulation sleeve through the connecting pipe, forms a closed circulation loop, divides the cavity in the heat insulation sleeve into two areas, cooperates with the arrangement of the two connecting pipes, ensures that the heat conducting oil has a clear flow direction when flowing through the periphery of the wire harness, significantly improves the heat dissipation efficiency and the path controllability, and integrates the whole device beside the wire harness, so that a large external heat dissipation system is not needed.

Description

Technical Field

[0001] This invention relates to the field of automotive parts technology, specifically to an integrated cooling automotive wiring harness. Background Technology

[0002] With the continuous improvement of automotive electronics and intelligence, automotive wiring harness systems are becoming increasingly complex, and the amount of current they carry and the amount of data they transmit are also increasing significantly. Automotive wiring harnesses are usually arranged in narrow and harsh environments such as engine compartments and chassis, and are surrounded by high temperatures, vibrations and various chemicals for a long time, especially near the engine and around high-power electrical components (such as motor controllers, on-board chargers, etc.), where the ambient temperature may be extremely high. In existing technologies, to protect wiring harnesses and delay their aging, it is common practice to wrap the wiring harness with an insulating sleeve or corrugated pipe. This method can, to some extent, isolate the radiant heat from external high-temperature heat sources (such as exhaust pipes) and provide mechanical protection. However, this passive heat insulation method has obvious limitations: First, it cannot effectively dissipate the Joule heat generated by the wiring harness itself due to the current passing through it. Under long-term high-current operation, heat accumulates inside the wiring harness, which can still lead to increased conductor temperature, accelerated aging of the insulation layer, or even melting, causing a short circuit risk. Second, when the external ambient temperature rises abnormally (such as engine overheating or local fire), the simple heat insulation material will quickly reach its temperature resistance limit and lose its protective function. Furthermore, existing technologies lack the ability to directly monitor and respond to the temperature of the wiring harness in real time, and cannot take proactive intervention measures in the early stages of temperature abnormalities to prevent failures. To address the issue of active heat dissipation, some technical solutions attempt to introduce forced air cooling or liquid cooling systems. For example, ventilation ducts are installed in the wire harness channel, or coolant pipes are arranged next to the wire harness. However, these solutions are often complex in structure and require additional components such as pumps, fans, and radiators. This not only increases the size, weight, and cost of the system but also increases the probability of failure and the difficulty of maintenance. Therefore, there is an urgent need for an intelligent protection device that can be integrated into the wire harness itself, has a compact structure, can monitor the temperature in real time, and can automatically and quickly and accurately cool down local overheated areas. Summary of the Invention

[0003] The purpose of this invention is to provide an integrated cooling automotive wiring harness to solve the problems mentioned in the background art, such as the inability of existing passive heat insulation solutions for automotive wiring harnesses to effectively dissipate their own working heat, lack of temperature monitoring and active response capabilities, and the complex structure, large size, and inability to perform rapid and precise cooling of traditional active cooling systems.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an integrated cooling automotive wiring harness, comprising a connecting harness, an insulating sleeve sleeved on the outer surface of the connecting harness, a connecting sleeve installed at the end of the connecting harness, and a first temperature sensor fixedly installed on the outer surface of the connecting sleeve, a cooling cylinder provided on one side of the insulating sleeve, and a piston chamber provided inside the cooling cylinder, and the piston chamber being connected to the insulating sleeve through a connecting pipe, and a first piston block and a second piston block being respectively provided inside the two piston chambers, and a separator ring being fixedly provided inside the end of the insulating sleeve connected to the connecting pipe; The cooling cylinder is equipped with a circulating liquid cooling mechanism, which achieves integrated cooling of the connecting wire harness by circulating and sucking the heat transfer oil. The circulating liquid cooling mechanism includes: a displacement rod, which is rotatably installed inside the cooling cylinder, with one end of the displacement rod penetrating the outer surface of the cooling cylinder; a displacement motor is fixedly installed inside the side surface of the cooling cylinder through which the displacement rod penetrates, and one end of the output shaft of the displacement motor is fixedly connected to the displacement rod; a second temperature sensor is fixedly installed at the end of the second piston block facing the piston chamber; a functional seat is fixedly provided on the outer surface of the opposite ends of the first and second piston blocks, and a sliding trigger block is installed at one end of the functional seat; and a contact switch is fixedly installed inside the functional seat.

[0005] Preferably, the two ends of the heat insulation sleeve are connected to each other, and a cavity is opened inside the side surface of the heat insulation sleeve. The cavity inside the side surface of the heat insulation sleeve is connected to the connecting pipe, and the inner surface of the separator ring is in contact with the outer surface of the connecting wire harness.

[0006] By adopting the above technical solution, the cavity is divided by a partition ring, which, in conjunction with the connecting pipe, ensures that the heat transfer oil flows along a unidirectional path, thereby improving heat dissipation efficiency.

[0007] Preferably, the first piston block and the second piston block are connected to the piston chamber by sliding friction, and the piston chamber is connected to one end of the connecting pipe. The two connecting pipes are located on both sides of the separator ring, and a spring is connected between the second piston block and the cooling cylinder.

[0008] By adopting the above technical solution, the heat transfer oil is circulated and drawn away through the coordinated movement of the piston block, thus removing the heat generated by the wiring harness.

[0009] Preferably, the displacement rod is threadedly connected to the first piston block, and a spring is connected between the second piston block and the piston chamber.

[0010] By adopting the above technical solution, the rotary motion is converted into linear motion through a displacement motor and threaded connection, which drives the piston block to reciprocate and complete the circulation of heat transfer oil.

[0011] Preferably, a spring connects the functional seat and the trigger block, and one end of the trigger block is positioned directly opposite the contact switch. The trigger block is an isosceles trapezoidal design, and the two trigger blocks on the first piston block and the second piston block are staggered vertically.

[0012] By employing the above technical solution, the piston movement pattern is monitored by alternately triggering the contact switch via a trigger block, thereby detecting heat transfer oil leakage.

[0013] An integrated cooling automotive wiring harness includes a connecting harness, an insulating sleeve covering the outer surface of the connecting harness, a connecting sleeve installed at the end of the connecting harness, and a first temperature sensor fixedly installed on the outer surface of the connecting sleeve. A cooling cylinder is provided on one side of the insulating sleeve, and a piston chamber is opened inside the cooling cylinder. The piston chamber is connected to the insulating sleeve through a connecting pipe. One end of a first piston block and a second piston block are respectively provided inside the two piston chambers. A separator ring is fixedly provided inside the end of the insulating sleeve connected to the connecting pipe. The cooling cylinder is equipped with a circulating liquid cooling mechanism, which achieves integrated cooling of the connecting wire harness by circulating and sucking the heat transfer oil. The cooling cylinder is equipped with a flame-retardant liquid cooling mechanism, which uses a large instantaneous temperature difference to quickly cool the hot spots of the connecting wire harness through an automatic temperature sensing trigger. The flame-retardant liquid cooling mechanism includes: a lifting rod, which is slidably connected to the cooling cylinder and fixedly connected to the first piston block. A limit groove is provided at one end of the lifting rod connected to the first piston block. A pressure valve is fixedly connected to one end of the connecting pipe opposite the second piston block. One end of the lifting rod penetrates the outer surface of the cooling cylinder, and a clearance groove is provided at the end of the cooling cylinder through which the lifting rod penetrates. A sliding limit block is installed inside the side surface of the end of the cooling cylinder through which the lifting rod penetrates. An electric push rod is fixedly installed on the side surface of the cooling cylinder on one side of the limit block, and a pressing block is fixedly connected to one end of the electric push rod.

[0014] Preferably, the two ends of the heat insulation sleeve are connected to each other, and a cavity is opened inside the side surface of the heat insulation sleeve. The cavity inside the side surface of the heat insulation sleeve is connected to the connecting pipe, and the inner surface of the separator ring is in contact with the outer surface of the connecting wire harness.

[0015] By adopting the above technical solution, the connection between the cavity and the connecting pipe provides a flow channel for the heat transfer oil, which facilitates rapid cooling by impact.

[0016] Preferably, the first piston block and the second piston block are connected to the piston chamber by sliding friction, and the piston chamber is connected to one end of the connecting pipe. The two connecting pipes are located on both sides of the separator ring, and a spring is connected between the second piston block and the cooling cylinder.

[0017] By adopting the above technical solution, a negative pressure is generated when the spring and piston block are activated, thereby achieving the impact flow of the heat transfer oil.

[0018] Preferably, the limiting groove is formed on the side of the lifting rod facing the limiting block, and the width of the limiting groove is greater than the thickness of the limiting block.

[0019] By adopting the above technical solution, the lifting rod is locked by the engagement of the limiting groove and the limiting block, so that the system is in an energy storage state.

[0020] Preferably, a spring is connected between the limiting block and the cooling cylinder, and the end of the limiting block facing the lifting rod is in contact with the outer surface of the lifting rod.

[0021] By adopting the above technical solution, the limit block is automatically reset by a spring, which facilitates quick release of the lock when triggered.

[0022] Preferably, the extrusion block is designed as a right-angled trapezoid, and the inclined surface of the extrusion block is set towards the limiting block.

[0023] By adopting the above technical solution, the squeezing and releasing control of the limit block by the electric push rod is achieved through the inclined surface design of the squeezing block.

[0024] Compared with the prior art, the beneficial effects of the present invention are: the integrated cooling automotive wiring harness: 1. By setting a first temperature sensor on the outside of the connecting sleeve and a second temperature sensor on the second piston block, the temperature of the wire harness end connection point and the internal circulating heat transfer oil can be monitored respectively. When the temperature rise is detected, the circulating liquid cooling mechanism is activated: the displacement motor drives the displacement rod to rotate. Since the displacement rod is threadedly connected to the first piston block, it is pushed to move, changing the volume of the piston chamber. With the cooperation of the sliding second piston block and the spring between them, the two piston blocks move in concert, which can stably and continuously circulate and draw the heat transfer oil that fills the cavity on the side surface of the heat insulation sleeve and the connecting pipe, and remove the Joule heat generated when the wire harness is working. This achieves efficient and integrated heat dissipation of the wire harness body and avoids the accumulation of heat in one place that cannot be dissipated. Furthermore, by intermittently triggering the contact switch during the reciprocating movement of the trigger block along with the first and second piston blocks, when the heat transfer oil leaks and the oil pressure is insufficient during the circulating cooling process, the second piston block cannot be driven to slide by the pressure, thus preventing the contact switch on one side of the second piston block from being triggered. At this time, the leak of heat transfer oil can be determined by the fact that the contact switches on both sides are not triggered simultaneously to send an electrical signal. Furthermore, the entire heat dissipation system is centered around a cooling cylinder, which is connected to the cavity of the insulation sleeve through a connecting pipe to form a closed loop. This divides the cavity inside the insulation sleeve into two areas, and works in conjunction with the arrangement of the two connecting pipes to ensure that the heat transfer oil has a clear flow direction when flowing through the periphery of the wire harness, significantly improving heat dissipation efficiency and path controllability. At the same time, the entire device is integrated next to the wire harness, eliminating the need for a large external heat dissipation system. 4. When an abnormally high temperature point is generated in a local area of ​​the wiring harness due to a fault, the flame-retardant liquid cooling mechanism can be automatically triggered. The first temperature sensor controls the electric push rod to retract, and the electric push rod pulls the right-angled trapezoidal extrusion block at its end to move, thereby releasing the pressure on the limiting block. The limiting block retracts under the action of its own spring and disengages from the limiting groove on the lifting rod that it was originally stuck in, releasing the locking of the lifting rod. The second piston block slides back under the action of the spring, causing the volume of the piston chamber where the second piston block is located to change suddenly. The pressure is transmitted to the cavity of the connecting pipe and the heat insulation sleeve through the pressure valve, instantly pumping a large amount of low-temperature heat transfer oil in the piston chamber where the first piston block is located to the high temperature point of the wiring harness through the connecting pipe, realizing "impact" rapid cooling, effectively preventing the insulation layer from melting and fire from occurring. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall three-dimensional structure of Embodiment 1 of the present invention; Figure 2 This is a three-dimensional structural diagram of the connection of the wire harness, heat insulation sleeve and cooling cylinder according to Embodiment 1 of the present invention; Figure 3 This is a three-dimensional structural diagram of the cross-sectional view of the connecting wire harness, heat insulation sleeve and cooling cylinder in Embodiment 1 of the present invention; Figure 4 This is a three-dimensional structural diagram of the cooling cylinder, the first piston block, and the second piston block connected in a cross-section according to Embodiment 1 of the present invention. Figure 5 This is a three-dimensional structural diagram of the cross-sectional view of the connection between the second piston block and the second temperature sensor in Embodiment 1 of the present invention; Figure 6 This is a three-dimensional structural diagram of the connection between the functional base, trigger block, and contact switch according to Embodiment 1 of the present invention. Figure 7 This is a schematic diagram of the overall cross-sectional three-dimensional structure of Embodiment 2 of the present invention; Figure 8 This is a three-dimensional structural diagram of the cooling cylinder, the first piston block, and the second piston block connected in a cross-section according to Embodiment 2 of the present invention. Figure 9 This is a three-dimensional structural diagram of the connection harness, connecting sleeve, and first temperature sensor of the present invention. Figure 10 This is a three-dimensional structural diagram of the connection between the connecting sleeve and the first temperature sensor of the present invention; Figure 11 This is a three-dimensional structural diagram of the cross-sectional view of the heat insulation sleeve, connecting pipe and partition ring of the present invention.

[0026] In the diagram: 1. Connecting harness; 2. Insulating sleeve; 3. Connecting sleeve; 4. First temperature sensor; 5. Cooling cylinder; 6. Piston chamber; 7. Connecting pipe; 8. First piston block; 9. Second piston block; 10. Separating ring; 11. Displacement rod; 12. Displacement motor; 13. Second temperature sensor; 14. Functional seat; 15. Trigger block; 16. Contact switch; 17. Lifting rod; 18. Limiting groove; 19. Pressure valve; 20. Relief groove; 21. Limiting block; 22. Electric push rod; 23. Extrusion block. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figures 1-11 The present invention provides a technical solution: an integrated cooling automotive wiring harness.

[0029] Example 1: This example discloses: a connecting wire harness 1, an insulating sleeve 2 covering the outer surface of the connecting wire harness 1, a connecting sleeve 3 installed at the end of the connecting wire harness 1, and a first temperature sensor 4 fixedly installed on the outer surface of the connecting sleeve 3, a cooling cylinder 5 provided on one side of the insulating sleeve 2, and a piston chamber 6 opened inside the cooling cylinder 5, and the piston chamber 6 is connected to the insulating sleeve 2 through a connecting pipe 7, and one end of the first piston block 8 and the second piston block 9 are respectively provided inside the two piston chambers 6, and a partition ring 10 is fixedly provided inside the end of the insulating sleeve 2 connected to the connecting pipe 7; The two ends of the heat insulation sleeve 2 are connected to each other, and a cavity is opened inside the side surface of the heat insulation sleeve 2. The cavity inside the side surface of the heat insulation sleeve 2 is connected to the connecting pipe 7, and the inner surface of the partition ring 10 is in contact with the outer surface of the connecting wire harness 1. The first piston block 8 and the second piston block 9 are connected to the piston chamber 6 by sliding friction, and the piston chamber 6 is connected to one end of the connecting pipe 7. The two connecting pipes 7 are located on both sides of the separating ring 10. A spring is connected between the second piston block 9 and the cooling cylinder 5. The cooling cylinder 5 is equipped with a circulating liquid cooling mechanism, which achieves integrated cooling of the connecting wire harness 1 by circulating and sucking the heat transfer oil. The circulating liquid cooling mechanism includes: a displacement rod 11, which is rotatably installed inside the cooling cylinder 5, and one end of the displacement rod 11 penetrates the outer surface of the cooling cylinder 5. A displacement motor 12 is fixedly installed inside the side surface of the cooling cylinder 5 through which the displacement rod 11 penetrates, and one end of the output shaft of the displacement motor 12 is fixedly connected to the displacement rod 11. A second temperature sensor 13 is fixedly installed at the end of the second piston block 9 facing the piston chamber 6. A functional seat 14 is fixedly provided on the outer surface of the opposite end of the first piston block 8 and the second piston block 9, and a sliding trigger block 15 is installed at one end of the functional seat 14. A contact switch 16 is fixedly installed inside the functional seat 14. The displacement rod 11 is threadedly connected to the first piston block 8, and a spring connects the second piston block 9 to the piston chamber 6. A spring connects the function base 14 and the trigger block 15, and one end of the trigger block 15 is positioned directly opposite the contact switch 16. The trigger block 15 is an isosceles trapezoidal design, and the two trigger blocks 15 on the first piston block 8 and the second piston block 9 are staggered vertically. When the first temperature sensor 4 on the connecting sleeve 3 detects an increase in the temperature at the end of the connecting wire harness 1 or the second temperature sensor 13 on the second piston block 9 detects an increase in the temperature of the circulating heat transfer oil, the temperature signal triggers the displacement motor 12 to start and drive the displacement rod 11 to rotate. Since the displacement rod 11 is threadedly connected to the first piston block 8, the rotational motion is converted into the linear motion of the first piston block 8, causing it to move within the piston chamber 6. When the first piston block 8 moves to the left, it compresses the volume of its left chamber, pumping the low-temperature heat-conducting oil in the chamber into the cavity on the side surface of the heat insulation sleeve 2 through the connecting pipe 7. At the same time, the movement of the first piston block 8 will push the second piston block 9 to the right through the oil pressure, overcoming the spring force and increasing the volume of its left chamber, thus drawing in the heat-conducting oil flowing back from the other side of the heat insulation sleeve 2. When the displacement motor 12 reverses, the two piston blocks move in opposite directions, completing a complete cycle. This process is repeated to achieve stable and continuous circulation and suction of the heat-conducting oil wrapped in the wire harness, removing the Joule heat generated by the wire harness. The partition ring 10 separates the cavity inside the heat insulation sleeve 2 and cooperates with the connecting pipes 7 on both sides to ensure that the heat transfer oil flows unidirectionally along the path of "cooling cylinder 5 → one side connecting pipe 7 → cavity of heat insulation sleeve 2 → other side connecting pipe 7 → cooling cylinder 5", thereby improving heat dissipation efficiency. A functional seat 14 is provided at one end of the two piston blocks facing each other, on which a sliding trigger block 15 and a contact switch 16 are mounted. During normal piston reciprocating motion, the two trigger blocks 15 will contact one end of the first piston block 8 and the second piston block 9 when the first piston block 8 and the second piston block 9 are misaligned and be pressed back, alternately triggering their respective contact switches 16 to generate regular electrical signals. If the system experiences heat transfer oil leakage, insufficient oil pressure will prevent the second piston block 9 from being effectively pushed, and the contact switch 16 on it will not be triggered. The vehicle control system can determine that the system has leaked and issue an alarm by detecting that the switches on both sides are not triggered alternately in a regular manner.

[0030] Example 2: This example discloses: a connecting wire harness 1, a heat insulation sleeve 2 sleeved on the outer surface of the connecting wire harness 1, a connecting sleeve 3 installed at the end of the connecting wire harness 1, and a first temperature sensor 4 fixedly installed on the outer surface of the connecting sleeve 3, a cooling cylinder 5 provided on one side of the heat insulation sleeve 2, and a piston chamber 6 opened inside the cooling cylinder 5, and the piston chamber 6 is connected to the heat insulation sleeve 2 through a connecting pipe 7, and one end of the first piston block 8 and the second piston block 9 are respectively provided inside the two piston chambers 6, and a partition ring 10 is fixedly provided inside the end of the heat insulation sleeve 2 connected to the connecting pipe 7; The two ends of the heat insulation sleeve 2 are connected to each other, and a cavity is opened inside the side surface of the heat insulation sleeve 2. The cavity inside the side surface of the heat insulation sleeve 2 is connected to the connecting pipe 7, and the inner surface of the partition ring 10 is in contact with the outer surface of the connecting wire harness 1. The first piston block 8 and the second piston block 9 are connected to the piston chamber 6 by sliding friction, and the piston chamber 6 is connected to one end of the connecting pipe 7. The two connecting pipes 7 are located on both sides of the separating ring 10. A spring is connected between the second piston block 9 and the cooling cylinder 5. The cooling cylinder 5 is equipped with a flame-retardant liquid cooling mechanism, which uses a large instantaneous temperature difference to quickly cool the hot spot of the connecting wire harness 1 through an automatic temperature sensing trigger. The flame-retardant liquid cooling mechanism includes: a lifting rod 17, which is slidably connected to the cooling cylinder 5 and fixedly connected to the first piston block 8. A limiting groove 18 is provided at one end of the lifting rod 17 connected to the first piston block 8. A pressure valve 19 is fixedly connected to one end of the connecting pipe 7 opposite the second piston block 9. One end of the lifting rod 17 penetrates the outer surface of the cooling cylinder 5, and a clearance groove 20 is provided at the end of the cooling cylinder 5 through which the lifting rod 17 penetrates. A sliding limiting block 21 is installed inside the side surface of the end of the cooling cylinder 5 through which the lifting rod 17 penetrates. An electric push rod 22 is fixedly installed on the side surface of the cooling cylinder 5 on one side of the limiting block 21, and a pressing block 23 is fixedly connected to one end of the electric push rod 22. The limiting groove 18 is opened on the side of the lifting rod 17 facing the limiting block 21, and the width of the limiting groove 18 is greater than the thickness of the limiting block 21. A spring is connected between the limiting block 21 and the cooling cylinder 5, and the end of the limiting block 21 facing the lifting rod 17 is in contact with the outer surface of the lifting rod 17. The extrusion block 23 is designed as a right-angled trapezoid, and the inclined surface of the extrusion block 23 is set towards the limiting block 21; Before use, the lifting rod 17 is pre-pulled through the clearance groove 20 and the limiting block 21 is squeezed by the inclined surface of the squeezing block 23, so that the limiting block 21 engages with the limiting groove 18 to limit the lifting rod 17. When an abnormal high temperature point such as a short circuit occurs at a certain end of the connecting wire harness 1, the first temperature sensor 4 detects that the temperature rises sharply and exceeds the safety threshold. After the high temperature signal is triggered, the control system commands the electric push rod 22 to retract. The electric push rod 22 drives the end squeezing block 23 to stop squeezing the limiting block 21. Under the action of the spring, the limiting block 21 exits from the limiting groove 18 on the lifting rod 17, releasing the lock on the lifting rod 17. The lifting rod 17 is fixedly connected to the first piston block 8. Previously, it was stuck by the limiting block 21, so that the entire piston system was in an "energy storage" state. After the lock is released, the compressed spring quickly pushes the second piston block 9 to rebound, so that the volume of the piston chamber 6 where it is located increases sharply, generating an instantaneous negative pressure. The negative pressure is transmitted through the pressure valve 19 and the connecting pipe 7, which pumps a large amount of low-temperature heat transfer oil stored in the chamber where the first piston block 8 is located into the cavity of the heat insulation sleeve 2 at high speed in an "impact" manner, directly flushing the hot spot area of ​​the wire harness, achieving rapid and precise cooling, and preventing the insulation layer from melting or fire from occurring.

[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated cooling automotive wiring harness, comprising a connecting harness (1), wherein a heat-insulating sleeve (2) is sleeved on the outer surface of the connecting harness (1), a connecting sleeve (3) is installed at the end of the connecting harness (1), and a first temperature sensor (4) is fixedly installed on the outer surface of the connecting sleeve (3), characterized in that: A cooling cylinder (5) is provided on one side of the heat insulation sleeve (2), and a piston chamber (6) is provided inside the cooling cylinder (5). The piston chamber (6) is connected to the heat insulation sleeve (2) through a connecting pipe (7). The first piston block (8) and the second piston block (9) are respectively provided inside the two piston chambers (6). A partition ring (10) is fixedly provided inside the end of the heat insulation sleeve (2) connected to the connecting pipe (7). The cooling cylinder (5) is equipped with a circulating liquid cooling mechanism, which achieves integrated cooling of the connecting wire harness (1) by circulating and sucking the heat transfer oil. The circulating liquid cooling mechanism includes: a displacement rod (11), which is rotatably installed inside the cooling cylinder (5), and one end of the displacement rod (11) penetrates the outer surface of the cooling cylinder (5). A displacement motor (12) is fixedly installed inside the side surface of the cooling cylinder (5) through which the displacement rod (11) penetrates, and one end of the output shaft of the displacement motor (12) is fixedly connected to the displacement rod (11). A second temperature sensor (13) is fixedly installed at the end of the second piston block (9) facing the piston chamber (6). A functional seat (14) is fixedly provided on the outer surface of the opposite end of the first piston block (8) and the second piston block (9). A sliding trigger block (15) is installed at one end of the functional seat (14), and a contact switch (16) is fixedly installed inside the functional seat (14). The cooling cylinder (5) is equipped with a flame-retardant liquid cooling mechanism, which uses a large instantaneous temperature difference to quickly cool the hot spot of the connecting wire harness (1) by means of automatic temperature sensing triggering. The flame-retardant liquid cooling mechanism includes: a lifting rod (17), which is slidably connected to the cooling cylinder (5) and fixedly connected to the first piston block (8). A limiting groove (18) is opened at one end of the lifting rod (17) connected to the first piston block (8). A pressure valve (19) is fixedly connected to one end of the connecting pipe (7) opposite the second piston block (9). One end of the lifting rod (17) penetrates the outer surface of the cooling cylinder (5), and a relief groove (20) is opened at the end of the cooling cylinder (5) through which the lifting rod (17) penetrates. A sliding limiting block (21) is installed inside the side surface of the end of the cooling cylinder (5) through which the lifting rod (17) penetrates. An electric push rod (22) is fixedly installed on the side surface of the cooling cylinder (5) on one side of the limiting block (21), and a squeezing block (23) is fixedly connected to one end of the electric push rod (22).

2. The integrated cooling automotive wiring harness according to claim 1, characterized in that: The two ends of the heat insulation sleeve (2) are connected to each other, and a cavity is opened inside the side surface of the heat insulation sleeve (2). The cavity inside the side surface of the heat insulation sleeve (2) is connected to the connecting pipe (7). The inner surface of the separator ring (10) is in contact with the outer surface of the connecting wire harness (1).

3. The integrated cooling automotive wiring harness according to claim 1, characterized in that: The first piston block (8) and the second piston block (9) are connected to the piston chamber (6) by sliding friction, and the piston chamber (6) is connected to one end of the connecting pipe (7). The two connecting pipes (7) are located on both sides of the separator ring (10). A spring is connected between the second piston block (9) and the cooling cylinder (5).

4. The integrated cooling automotive wiring harness according to claim 1, characterized in that: The displacement rod (11) is threadedly connected to the first piston block (8), and a spring is connected between the second piston block (9) and the piston chamber (6).

5. The integrated cooling automotive wiring harness according to claim 1, characterized in that: A spring is connected between the functional seat (14) and the trigger block (15), and one end of the trigger block (15) is positioned directly opposite the contact switch (16). The trigger block (15) is an isosceles trapezoidal design, and the two trigger blocks (15) on the first piston block (8) and the second piston block (9) are staggered vertically.

6. The integrated cooling automotive wiring harness according to claim 1, characterized in that: The limiting groove (18) is opened on the side of the lifting rod (17) facing the limiting block (21), and the width of the limiting groove (18) is greater than the thickness of the limiting block (21).

7. The integrated cooling automotive wiring harness according to claim 1, characterized in that: A spring is connected between the limiting block (21) and the cooling cylinder (5), and the end of the limiting block (21) facing the lifting rod (17) is in contact with the outer surface of the lifting rod (17).

8. The integrated cooling automotive wiring harness according to claim 1, characterized in that: The extrusion block (23) is designed as a right-angled trapezoid, and the inclined surface of the extrusion block (23) is set towards the limiting block (21).

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