Aluminum alloy flat cable for new energy automobile

Abstract

The invention discloses an aluminum alloy flat cable for a new energy automobile, and relates to the technical field of power cables, the aluminum alloy flat cable comprises an aluminum alloy solid conductor, the outer side of the aluminum alloy solid conductor is provided with a composite insulating layer, the composite insulating layer is internally coated with an aerogel thermal insulation layer, the inner side of the aerogel thermal insulation layer is provided with a limiting center groove, and the inner side of the aerogel thermal insulation layer is provided with a limiting groove. A heat conduction silica gel sheet is clamped to the inner side of the limiting center groove, and a center connecting sleeve is connected to the middle of the heat conduction silica gel sheet. Heat in the flat cable is directionally transferred through circulation of heat conduction oil in the flow guide outer pipe and the backflow inner pipe; the flat cable ensures that the interior of the flat cable can be kept in a proper temperature range in the using process, effectively prevents the situation that heat generated in the working process of the flat cable is randomly diffused to cause abnormal temperature rise of peripheral electronic components to affect normal use, and ensures that the flat cable does not affect normal use of an automobile in the using process. And the use safety of the flat cable is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power cables, and in particular to an aluminum alloy flat cable for new energy vehicles. Background Art

[0002] A new round of global technological and industrial changes is booming. The automotive industry has entered an era of great changes that has not been seen in a century. The integration of automobiles with information communications, energy and other fields is accelerating. The development of new energy vehicles has both new challenges and development opportunities. It is only a basic requirement for new energy vehicle companies to master the core technologies of "three electrics", but it is far from enough. Motor, electronic control and battery technology are basic technologies, and vehicle integration technology is more difficult and requires higher requirements. New energy vehicle integration vehicle manufacturing is the peak of automotive technology. In the process of new energy vehicle development, corresponding aluminum alloy flat cables are needed. For this reason, a Chinese patent discloses an easy-to-connect flexible flat cable with application number 202411666605.4. The patent can connect two cable units through the cooperation between the plug and the socket, so that the length of the flat cable can be freely adjusted to meet the use requirements of different scenes or equipment, and the rotation of the ball and the roller makes it easy to insert or pull out the plug from the socket. However, at present, aluminum alloy flat cables are restricted by the location of use during use. Since the electrical components inside new energy vehicles are densely arranged, and the flat cables, as the main power supply cables, have high current and high power when working, the flat cables generate severe heat during operation. If the heat generated by the flat cables is allowed to diffuse at will during the long-term driving of new energy vehicles, the temperature of other electronic components arranged around the flat cables will continue to rise, causing failures in the operation of the electronic components, thereby reducing the safety of the flat cables. Summary of the invention

[0003] The present invention provides an aluminum alloy flat cable for new energy vehicles, which can effectively solve the problem that the aluminum alloy flat cable proposed in the above background technology is limited by the use position during use. Since the electrical components inside the new energy vehicle are densely arranged, and the flat cable as the main power supply cable has a large current and high power when working, the flat cable generates serious heat when working. If the heat generated by the flat cable is allowed to diffuse randomly during the long-term driving of the new energy vehicle, the temperature of other electronic components arranged around the flat cable will continue to rise, thereby causing failures in the operation of the electronic components, thereby reducing the safety of the flat cable.

[0004] To achieve the above object, the present invention provides the following technical solution: an aluminum alloy flat cable for new energy vehicles, comprising an aluminum alloy solid conductor, wherein a composite insulating layer is arranged on the outer side of the aluminum alloy solid conductor; A multifunctional directional heat conduction circulation mechanism is arranged inside the composite insulation layer, and the multifunctional directional heat conduction circulation mechanism is used to isolate the temperature inside the cable and assist in dissipating the heat inside the cable during the use of the cable; The multifunctional directional heat conduction circulation mechanism comprises an aerogel insulation layer; The composite insulation layer is coated with an aerogel insulation layer, a limited center groove is provided inside the aerogel insulation layer, a heat-conducting silicone sheet is clamped inside the limited center groove, a center connecting sleeve is connected to the middle of the heat-conducting silicone sheet, and limited elastic lines are inserted and connected at the four corners of the center connecting sleeve; The inner side of the central connecting sleeve is inserted with a flow guide outer tube, the inner side of the flow guide outer tube is inserted with a return flow inner tube, and the outer side of the return flow inner tube is sleeved with an internal support ring; A connecting inner hard pipe is fixedly installed at the bottom of the side surface of the reflux inner pipe, and a connecting outer hard pipe is connected inside the guide outer pipe.

[0005] According to the above technical solution, the nominal cross-sectional area of ​​the aluminum alloy solid conductor is 30mm 2 ~500mm 2 , its cross-sectional shape is rectangular or elliptical, and the ratio of width to thickness is 4.5 to 8.5; The aluminum alloy solid conductor has a tensile strength of ≥135 MPa, a yield strength of ≥90 MPa, a HV Vickers hardness of ≥43, an elongation at break of ≥16.5%, and a conductivity of ≥59.5% IACS; The transverse bending radius of the aluminum alloy solid conductor satisfies 1D to 3D; The four corners of the aluminum alloy solid conductor are arc chamfered, and the chamfer radius is 0.8 to 3.0 mm; The composite insulation layer is made of nylon, silicone rubber, PVC, XLPE, XLPO or TPE polymer series; When the cross-sectional shape of the aluminum alloy solid conductor is an ellipse, the two narrow sides of the ellipse conductor are semicircular transitions, and the radius thereof is 1 / 2 of the thickness value; The aluminum alloy solid conductor and the percentage of each component are: Si: 0.35-0.55, Mg: 0.40-0.60, Fe: 0.05-0.25, Cu: content not more than 0.01, Mn: content not more than 0.03, Cr: content not more than 0.01%, B: content not more than 0.01, Zn: content not more than 0.01, the balance is Al and unavoidable impurities, the content of each unavoidable impurity is not more than 0.03, and the total impurity content is not more than 0.10; The aluminum alloy solid conductor also includes an end head, and the end head can be arbitrarily adjusted in design and connected according to the structural requirements of the in-vehicle connector.

[0006] According to the above technical solution, the inner side of the aerogel insulation layer is tightly fitted with the aluminum alloy solid conductor and the outer side of the thermally conductive silicone sheet, and the inner side of the thermally conductive silicone sheet is tightly fitted with both sides of the central connecting sleeve; The ends of the guide outer tube and the return inner tube are both movably connected with sealing end plugs, and the insides of the guide outer tube and the return inner tube are both filled with heat transfer oil; A connecting mounting cover is provided at the bottom of the connecting inner hard tube and the connecting outer hard tube, the inner cavity of the guide outer tube and the reflux inner tube are connected through the connecting mounting cover, and the top of the connecting mounting cover is fixedly connected to the top surface of the inner cavity of the active circulation bottom box.

[0007] According to the above technical solution, the outer side of the connecting external hard pipe is tightly sleeved with a connecting rubber plug, the bottom of the connecting rubber plug is bonded with an active circulation bottom box, both ends of the active circulation bottom box are fixedly clamped with guide curved plates, and the middle of both ends of the active circulation bottom box are embedded with protective end plates; A mini motor is clamped at the middle of the bottom surface of the active circulation bottom box corresponding to the bottom position of the external hard tube, and the mini motor is powered by an external power supply. The top of the output shaft of the mini motor is connected to a mini infusion auger at a position corresponding to the inner position of the internal hard tube through a one-way bearing, and the bottom of the mini infusion auger is fixedly sleeved with a driving blade at the bottom position of the inner side of the active circulation bottom box; One end of the bottom of the composite insulation layer away from the active circulation bottom box is fixedly connected to the passive circulation bottom box through another group of connecting inner hard tubes and connecting outer hard tubes, the bottom ends of the connecting inner hard tubes and connecting outer hard tubes are fixedly connected to a guide concentric cover at positions corresponding to the inside of the passive circulation bottom box, one side of the guide concentric cover is fixedly connected to a drainage side pipe at a position corresponding to the bottom of the connecting outer hard tube, and the other side of the guide concentric cover is fixedly connected to a return side pipe at a position corresponding to the bottom of the connecting inner hard tube; The ends of the discharge side pipe and the return side pipe are fixedly connected to the driving square end boxes, and the liquid guide side square pipes are fixedly installed at the positions on both sides between the two driving square end boxes; A driving rectangular piece is slidably clamped on the bottom inner side of the liquid-conducting side square tube, a connecting rod is fixedly connected to the bottom of the driving rectangular piece, and driving counterweight blocks are fixedly connected to the ends of the connecting rod at positions corresponding to the two ends inside the passive circulation bottom box, and support springs are embedded and installed in the middle of both ends of the bottom surface of the driving counterweight block.

[0008] According to the above technical solution, the guide bend plate is distributed centrally and symmetrically inside the active circulation bottom box, and the two ends of the active circulation bottom box are internally connected to each other, and air guide holes are evenly opened at the corresponding ends of the two protective end plates, and the outer side of the driving blade and the inner side of the guide bend plate are tightly slidably fitted.

[0009] According to the above technical solution, the bottoms of the connecting inner hard tube and the connecting outer hard tube inside the guide concentric cover are not connected to each other, and a one-way valve is embedded in the middle of the outer side of the discharge side tube and the reflux side tube.

[0010] According to the above technical solution, the driving square end boxes are connected through the liquid-conducting side square tubes, the outer side of the driving rectangular sheet is tightly slidably fitted with the inner wall of the driving square end box, a limited position fine frame is provided on the inner top of the driving square end box, the outer side surface of the driving counterweight block is tightly slidably fitted with the inner wall of the passive circulation bottom box, and the bottom end of the support spring is tightly fitted with the inner bottom surface of the passive circulation bottom box.

[0011] According to the above technical solution, an outer ring protection installation mechanism is provided on the outside of the composite insulation layer; The outer ring protection installation mechanism includes an installation protection strip; The top and bottom of the outer side of the composite insulation layer are both bonded with installation protection strips, and the middle of the side of the installation protection strip is evenly and evenly embedded with a protection hard sheet, and the sides of the two installation protection strips are commonly and fixedly connected with a protection side strip, and the top and bottom of the protection side strip are both provided with extrusion arc grooves, and the middle of the inner side of the protection side strip is evenly and evenly interspersed with a central support spring sheet; Elastic grooves are evenly and equidistantly provided at the end of the central supporting spring piece, a central expansion groove is provided in the middle of one side of the central supporting spring piece, a central connecting rope is inserted through the middle of the central supporting spring piece, and elastic buffer airbags are inserted through the top and bottom of the protective side strips.

[0012] According to the above technical solution, the side surface of the protective hard sheet is flush with the side surface of the installation protective strip, the inner side of the protective side strip is tightly fitted with the outer side of the composite insulation layer, and the side surface of the installation protective strip is connected to the protective side strip via a card slot.

[0013] According to the above technical solution, the outer side of the central supporting spring piece is tightly fitted with the inner side of the protective side strip, and the elastic buffer airbag is compressed after being squeezed.

[0014] Compared with the prior art, the present invention has the following beneficial effects: the present invention has a scientific and reasonable structure and is safe and convenient to use: 1. A multifunctional directional heat transfer circulation mechanism is provided. Through the mutual cooperation between the components inside the multifunctional directional heat transfer circulation mechanism, the temperature regulation process during the use of the flat cable is optimized. The internal temperature of the flat cable is isolated and protected by the aerogel insulation layer to prevent the heat generated during the use of the flat cable from arbitrarily diffusing to other electrical components inside the new energy vehicle. The heat inside the flat cable is transferred directionally through the circulation of the heat transfer oil inside the guide outer tube and the return inner tube, and the inside of the flat cable is cooled during the circulation of the heat transfer oil, thereby ensuring that the inside of the flat cable can be kept within a suitable temperature range during use, and effectively preventing the heat generated during the operation of the flat cable from arbitrarily diffusing and causing abnormal heating of the surrounding electronic components to affect normal use, ensuring that the flat cable will not affect the normal use of the car during use, and effectively improving the safety of the flat cable; Through the mutual cooperation between the components inside the active circulation bottom box and the passive circulation bottom box, the flow process of the heat transfer oil inside the guide outer tube and the return inner tube is optimized. Through the mutual cooperation between the mini motor and the mini infusion auger, the heat transfer oil can be driven to circulate actively. Through the mutual cooperation between the guide curved plate and the driving blade, the airflow generated during the movement of the car is used to drive the heat transfer oil to circulate. Through the mutual cooperation between the driving counterweight block and the supporting spring, the kinetic energy of the driving counterweight block rising and falling during the bumpy movement of the car can be used to drive the heat transfer oil to circulate, further optimizing the circulation mode of the heat transfer oil inside the guide outer tube and the return inner tube, making full use of various external conditions during the use of the flat cable, and further improving the convenience of using the flat cable; In addition, the aluminum alloy solid conductor is limited and clamped by the cooperation of the thermal conductive silicone sheet and the center connecting sleeve to prevent the aluminum alloy solid conductor from shifting randomly during installation and use, and the heat on the aluminum alloy solid conductor can be conducted so that the heat on the aluminum alloy solid conductor can be transferred to the inside of the guide outer tube more quickly. The positions of the passive circulation bottom box and the active circulation bottom box are adjusted and installed through the connecting inner hard tube and the connecting outer hard tube with variable lengths, so that the active circulation bottom box can obtain sufficient airflow during use, and the passive circulation bottom box can obtain sufficient vibration during use, thereby effectively improving the convenience and stability of the flat cable.

[0015] 2. An outer ring protection installation mechanism is provided. Through the mutual cooperation between the components inside the outer ring protection installation mechanism, the installation protection process of the flat cable is optimized. The outer side of the flat cable is protected as a whole through the mutual cooperation between the installation protection strip and the protection side strip, and the side of the installation protection strip is partially hard-protected by the protection hard sheet, so that the side of the protection hard sheet can be extruded and strengthened when the flat cable is installed, and the flat cable is limited as a whole through the extrusion deformation of the protection side strip, thereby effectively improving the tightness and stability of the flat cable installation; At the same time, the overall deformation ability of the protective side strip can be improved by extruding the arc groove, the structural hardness inside the protective side strip can be improved by the central supporting spring sheet, and the elastic buffer airbag can flexibly support the inside of the protective side strip, thereby further improving the installation stability and tightness of the flat cable. The central supporting spring sheet is assisted in limiting by the mutual cooperation between the elastic groove and the central connecting rope to ensure that the central supporting spring sheet can still maintain sufficient shape and elasticity during the bending process of the flat cable, thereby further improving the installation stability and installation strength of the cable.

[0016] In summary, the installation process and use process of the flat cable are optimized through the mutual cooperation between the components inside the multifunctional directional heat conduction circulation mechanism and the outer ring protection installation mechanism, and the mutual cooperation between the components outside the composite insulation layer can make the flat cable maintain sufficient contact with the installation groove during the installation process, thereby effectively improving the stability of the flat cable installation, and at the same time, by adjusting the transfer of the internal temperature of the flat cable during the use of the flat cable, it is ensured that the heat generated during the use of the flat cable will not spread arbitrarily to affect the normal use of surrounding electronic components, thereby effectively improving the safety of the cable, and at the same time, through the mutual cooperation between the components inside the active circulation bottom box and the passive circulation bottom box, the heat conduction process and the heat dissipation process of the flat cable can make full use of the airflow and vibration in the working environment, further improving the convenience of the flat cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0018] In the attached picture: Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a structural schematic diagram of the end face of the present invention; Figure 3 It is a structural schematic diagram of the multifunctional directional heat transfer circulation mechanism of the present invention; Figure 4 This is a schematic diagram of the structure of the thermal conductive silicone sheet installed in the present invention; Figure 5 It is a structural schematic diagram of the passive circulation bottom box installation of the present invention; Figure 6 It is a schematic diagram of the structure of the connection inner hard pipe installation of the present invention; Figure 7 It is a schematic diagram of the structure of the mini motor installation of the present invention; Figure 8 It is a structural schematic diagram of the installation of the liquid-guiding side square tube of the present invention; Fig. 9 It is a structural schematic diagram of the installation of the driving counterweight block of the present invention; Fig.10 It is a structural schematic diagram of the outer ring protection installation mechanism of the present invention; Fig.11 It is a structural schematic diagram of the installation of the protection strip of the present invention; Fig.12 It is a schematic diagram of the structure of the elastic buffer airbag installation of the present invention; Numbers in the figure: 1, aluminum alloy solid conductor; 2, composite insulation layer; 3. Multifunctional directional heat conduction circulation mechanism; 301. Aerogel insulation layer; 302. Position-limiting center groove; 303. Thermal conductive silicone sheet; 304. Center connecting sleeve; 305. Position-limiting elastic line; 306. Diversion outer tube; 307. Return inner tube; 308. Internal support ring; 309. Sealing end plug; 310. Connecting inner hard tube; 311. Connecting outer hard tube; 312. Connecting rubber plug; 313. Active circulation bottom box; 314. Diversion Bending plate; 315, protective end plate; 316, connecting mounting cover; 317, mini motor; 318, mini infusion auger; 319, driving paddle; 320, passive circulation bottom box; 321, diversion concentric cover; 322, drainage side pipe; 323, return side pipe; 324, driving square end box; 325, diversion side square pipe; 326, driving rectangular sheet; 327, connecting turning rod; 328, driving counterweight block; 329, supporting spring; 4. Outer ring protection installation mechanism; 401. Installation protection strip; 402. Protection hard plate; 403. Protection side strip; 404. Extrusion arc groove; 405. Center support spring piece; 406. Elastic groove; 407. Center expansion groove; 408. Center connecting rope; 409. Elastic buffer airbag. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0020] Example: Figure 1-12As shown, the present invention provides a technical solution, an aluminum alloy flat cable for new energy vehicles, comprising an aluminum alloy solid conductor 1, a composite insulating layer 2 is arranged on the outside of the aluminum alloy solid conductor 1, and the nominal cross-sectional area of ​​the aluminum alloy solid conductor 1 is 30mm 2 ~500mm 2 , its cross-sectional shape is rectangular or elliptical, and the ratio of width to thickness is 4.5 to 8.5; The tensile strength of the aluminum alloy solid conductor 1 is ≥135MPa, the yield strength is ≥90MPa, the HV Vickers hardness is ≥43, the elongation at break is ≥16.5%, and the electrical conductivity is ≥59.5%IACS; The transverse bending radius of the aluminum alloy solid conductor 1 satisfies 1D to 3D; The four corners of the aluminum alloy solid conductor 1 are arc chamfered, and the chamfer radius is 0.8 to 3.0 mm; The composite insulating layer 2 is made of nylon material, silicone rubber, PVC, XLPE, XLPO or TPE polymer series; When the cross-sectional shape of the aluminum alloy solid conductor 1 is an ellipse, the two narrow sides of the ellipse conductor are semicircular transitions, and the radius thereof is 1 / 2 of the thickness value; Aluminum alloy solid conductor 1 and the percentage of each component are: Si: 0.35-0.55, Mg: 0.40-0.60, Fe: 0.05-0.25, Cu: content not more than 0.01, Mn: content not more than 0.03, Cr: content not more than 0.01%, B: content not more than 0.01, Zn: content not more than 0.01, the balance is Al and inevitable impurities, the content of each inevitable impurity is not more than 0.03, and the total impurity content is not more than 0.10; The aluminum alloy solid conductor 1 also includes a terminal, which can be arbitrarily adjusted and designed according to the structural requirements of the in-vehicle connector and connected; A multifunctional directional heat transfer circulation mechanism 3 is arranged inside the composite insulation layer 2, and the multifunctional directional heat transfer circulation mechanism 3 is used to isolate the temperature inside the cable and assist in extracting the heat inside the cable during the use of the cable; The multifunctional directional heat conduction circulation mechanism 3 comprises an aerogel insulation layer 301, a limiting center groove 302, a heat-conducting silicone sheet 303, a center connecting sleeve 304, a limiting elastic line 305, a flow guide outer tube 306, a reflux inner tube 307, an internal support ring 308, a sealing end plug 309, a connecting inner hard tube 310, a connecting outer hard tube 311, a connecting rubber plug 312, an active circulation bottom box 313, a flow guide curved plate 314, a protective end plate 315, a connecting installation cover 316, a mini motor 317, a mini infusion auger 318, a driving blade 319, a passive circulation bottom box 320, a flow guide concentric cover 321, a discharge side tube 322, a reflux side tube 323, a driving square end box 324, a flow guide side square tube 325, a driving rectangular sheet 326, a connecting turning rod 327, a driving counterweight block 328 and a supporting spring 329; The position between the two aluminum alloy solid conductors 1 inside the composite insulation layer 2 is tightly coated with an aerogel insulation layer 301, and the middle of the top and bottom surfaces of the inner side of the aerogel insulation layer 301 are provided with a limited center groove 302. The inner side of the limited center groove 302 corresponds to the top and bottom surfaces of the aluminum alloy solid conductor 1. The thermal conductive silicone sheets 303 are evenly and evenly clamped at the same distance, and the middle positions of the two adjacent thermal conductive silicone sheets 303 are fixedly connected with a central connecting sleeve 304. The four corners of the central connecting sleeve 304 are interspersed with limited elastic lines 305. The four corners of the aluminum alloy solid conductor 1 are arc chamfered transitions with a chamfer radius of 2mm. The composite insulation layer 2 is made of silicone rubber to meet the requirements of the use environment temperature of -40 to +70°C and the long-term operating temperature of 125°C. The inner side of the aerogel insulation layer 301 is tightly fitted with the aluminum alloy solid conductor 1 and the outer side of the thermal conductive silicone sheet 303, and the inner side of the thermal conductive silicone sheet 303 is tightly fitted with both sides of the central connecting sleeve 304; The guide outer tube 306 is tightly inserted in the middle of the inner side of the central connecting sleeve 304, the return inner tube 307 is inserted in the guide outer tube 306, the return inner tube 307 is evenly sleeved with an internal support ring 308 at an equal distance outside, and the ends of the guide outer tube 306 and the return inner tube 307 are movably clamped with sealing end plugs 309; A connecting inner hard pipe 310 is fixedly installed at the bottom of the side of the reflux inner pipe 307, a connecting outer hard pipe 311 is fixedly connected to the position of the inner guide outer pipe 306 corresponding to the outer side of the connecting inner hard pipe 310, a connecting rubber plug 312 is tightly sleeved on the outer side of the connecting outer hard pipe 311, an active circulation bottom box 313 is bonded to the bottom of the connecting rubber plug 312, both ends of the active circulation bottom box 313 are fixedly clamped with guide bend plates 314, and protective end plates 315 are embedded and installed in the middle of both ends of the active circulation bottom box 313, a connecting installation cover 316 is provided at the bottom of the connecting inner hard pipe 310 and the connecting outer hard pipe 311, the inner parts of the guiding outer pipe 306 and the reflux inner pipe 307 are filled with heat transfer oil, the inner cavities of the guiding outer pipe 306 and the reflux inner pipe 307 are connected through the connecting installation cover 316, and the top of the connecting installation cover 316 is fixedly connected to the top surface of the inner cavity of the active circulation bottom box 313; A mini motor 317 is clamped at the middle of the bottom surface of the active circulation bottom box 313 corresponding to the bottom position of the external hard tube 311, and the mini motor 317 is powered by an external power supply. The top of the output shaft of the mini motor 317 corresponds to the internal position of the internal hard tube 310 and is connected to a mini infusion auger 318 through a one-way bearing. The bottom of the mini infusion auger 318 corresponds to the bottom position of the inner side of the active circulation bottom box 313 and is fixedly sleeved with a driving paddle 319. The guide bend 314 is centrally symmetrically distributed inside the active circulation bottom box 313, and the two ends of the active circulation bottom box 313 are interconnected. The corresponding ends of the two protective end plates 315 are evenly provided with air guide holes, and the outer side of the driving paddle 319 and the inner side of the guide bend 314 are tightly slidably fitted; One end of the bottom of the composite insulation layer 2 away from the active circulation bottom box 313 is fixedly connected to the passive circulation bottom box 320 through another group of connecting inner hard tubes 310 and connecting outer hard tubes 311. The bottom ends of the connecting inner hard tubes 310 and connecting outer hard tubes 311 are fixedly connected to a guide concentric cover 321 corresponding to the internal position of the passive circulation bottom box 320. A drainage side pipe 322 is fixedly connected to one side of the guide concentric cover 321 corresponding to the bottom position of the connecting outer hard tube 311. A return side pipe 323 is fixedly connected to the other side of the guide concentric cover 321 corresponding to the bottom position of the connecting inner hard tube 310. The bottoms of the connecting inner hard tube 310 and the connecting outer hard tube 311 inside the guide concentric cover 321 are not connected to each other, and a one-way valve is embedded in the middle of the outer side of the drainage side pipe 322 and the return side pipe 323. The ends of the discharge side pipe 322 and the return side pipe 323 are fixedly connected with a driving square end box 324, and the two sides between the two driving square end boxes 324 are fixedly installed with a liquid guide side square pipe 325; A driving rectangular piece 326 is slidably connected to the bottom of the inner side of the liquid-conducting side square tube 325, and a connecting rod 327 is fixedly connected to the bottom of the driving rectangular piece 326. The ends of the connecting rod 327 are fixedly connected to driving counterweight blocks 328 at the positions of the two ends inside the passive circulation bottom box 320. Support springs 329 are embedded and installed in the middle of the two ends of the bottom surface of the driving counterweight block 328. The driving square end boxes 324 are connected through the liquid-conducting side square tube 325. The outer side of the driving rectangular piece 326 is tightly slidably fitted with the inner wall of the driving square end box 324. A limited position thin frame is set on the top of the inner side of the driving square end box 324. The outer side surface of the driving counterweight block 328 is tightly slidably fitted with the inner wall of the passive circulation bottom box 320. The bottom end of the support spring 329 is tightly fitted with the inner bottom surface of the passive circulation bottom box 320. Through the multifunctional directional heat conduction circulation mechanism 3, the components inside The temperature regulation process during the use of the flat cable is optimized by the mutual cooperation of the aerogel insulation layer 301, and the internal temperature of the flat cable is isolated and protected to prevent the heat generated during the use of the flat cable from randomly diffusing to other electrical components inside the new energy vehicle. Then, the heat inside the flat cable is directed to be transferred through the circulation of the heat transfer oil inside the guide outer tube 306 and the return inner tube 307, and the inside of the flat cable is cooled during the circulation of the heat transfer oil, thereby ensuring that the inside of the flat cable can be kept within a suitable temperature range during use, and effectively preventing the heat generated during the operation of the flat cable from randomly diffusing and causing abnormal heating of the surrounding electronic components to affect normal use, ensuring that the flat cable will not affect the normal use of the car during use, and effectively improving the safety of the flat cable. Through the mutual cooperation between the components inside the active circulation bottom box 313 and the passive circulation bottom box 320, the flow process of the heat transfer oil inside the guide outer tube 306 and the return inner tube 307 is optimized. Through the mutual cooperation between the mini motor 317 and the mini infusion auger 318, the heat transfer oil can be driven to circulate actively. Through the mutual cooperation between the guide curved plate 314 and the driving blade 319, the airflow generated during the movement of the car is used to drive the heat transfer oil to circulate. Through the mutual cooperation between the driving counterweight block 328 and the supporting spring 329, the kinetic energy of the rise and fall of the driving counterweight block 328 during the bumpy movement of the car can be used to drive the heat transfer oil to circulate, further optimizing the circulation mode of the heat transfer oil inside the guide outer tube 306 and the return inner tube 307, making full use of various external conditions during the use of the flat cable, and further improving the convenience of using the flat cable. The aluminum alloy solid conductor 1 is limited and clamped by the cooperation of the heat-conducting silicone sheet 303 and the central connecting sleeve 304 to prevent the aluminum alloy solid conductor 1 from being randomly displaced during installation and use, and the heat on the aluminum alloy solid conductor 1 can be conducted so that the heat on the aluminum alloy solid conductor 1 can be transferred to the inside of the guide outer tube 306 more quickly, and the positions of the passive circulation bottom box 320 and the active circulation bottom box 313 are adjusted and installed by the variable-length connecting inner hard tube 310 and the connecting outer hard tube 311, so that the active circulation bottom box 313 can obtain sufficient airflow during use, and the passive circulation bottom box 320 can obtain sufficient vibration during use, thereby effectively improving the convenience and stability of the flat cable. An outer ring protection installation mechanism 4 is arranged outside the composite insulation layer 2; The outer ring protection installation mechanism 4 includes an installation protection strip 401, a protection hard sheet 402, a protection side strip 403, an extrusion arc groove 404, a central support spring sheet 405, an elastic groove 406, a central expansion groove 407, a central connecting cable 408 and an elastic buffer airbag 409; The top and bottom of the outer side of the composite insulating layer 2 are bonded with installation protection strips 401, and the middle of the side of the installation protection strip 401 is evenly embedded with a protection hard sheet 402, the side of the protection hard sheet 402 is flush with the side of the installation protection strip 401, the inner side of the protection side strip 403 is tightly fitted with the outer side of the composite insulating layer 2, and the side of the installation protection strip 401 is connected with the protection side strip 403 through a card slot; A protective side strip 403 is fixedly connected between the sides of the two installation protection strips 401. The top and bottom of the protective side strip 403 are provided with extruded arc grooves 404. A central support spring piece 405 is evenly and evenly inserted in the middle of the inner side of the protective side strip 403. An elastic groove 406 is evenly and evenly inserted in the end of the central support spring piece 405. A central expansion groove 407 is opened in the middle of one side of the central support spring piece 405. A central connecting rope 408 is inserted in the middle of the central support spring piece 405. Elastic buffer airbags 409 are inserted in the top and bottom of the protective side strip 403. Between the outer side of the central support spring piece 405 and the inner side of the protective side strip 403, there is a central expansion groove 407. A central connecting rope 408 is inserted in the middle of the central support spring piece 405. Tightly fit, the elastic buffer airbag 409 is compressed after being squeezed, and the installation and protection process of the flat cable is optimized through the mutual cooperation between the components inside the outer ring protection installation mechanism 4. The outer side of the flat cable is protected as a whole through the mutual cooperation between the installation protection strip 401 and the protection side strip 403, and the side of the installation protection strip 401 is partially hard protected by the protection hard sheet 402, so that the side of the protection hard sheet 402 can be squeezed and strengthened when the flat cable is installed, and then the flat cable is limited as a whole through the extrusion deformation of the protection side strip 403, thereby effectively improving the tightness and stability of the flat cable installation; At the same time, the overall deformation ability of the protective side strip 403 can be improved by extruding the arc groove 404, and then the structural hardness inside the protective side strip 403 is improved by the central supporting spring piece 405, and the elastic buffer airbag 409 is used to flexibly support the inside of the protective side strip 403, thereby further improving the installation stability and the tightness of the flat cable. The central supporting spring piece 405 is assisted in limiting by the mutual cooperation between the elastic groove 406 and the central connecting rope 408, so as to ensure that the central supporting spring piece 405 can still maintain sufficient shape and elasticity during the bending process of the flat cable, thereby further improving the installation stability and installation strength of the cable.

[0021] Working principle and use process of the present invention: In the actual application process of the present invention, when using the aluminum alloy flat cable, it is necessary to first connect the aluminum alloy solid conductor 1 to a suitable position for power supply, and protect the outer side of the aluminum alloy solid conductor 1 through the composite insulation layer 2. When the heat generated by the flat cable needs to be directed during long-term operation, the inside of the composite insulation layer 2 is isolated through the aerogel insulation layer 301 to prevent the heat generated by the flat cable during use from arbitrarily diffusing outward; Then, the heat-conducting silicone sheet 303 and the central connecting sleeve 304 are evenly installed inside the composite insulating layer 2 through the limiting central groove 302, and the central connecting sleeve 304 is flexibly limited by the limiting elastic line 305, and the two aluminum alloy solid conductors 1 are limited by the cooperation between the heat-conducting silicone sheet 303 and the central connecting sleeve 304, so as to prevent the aluminum alloy solid conductor 1 from being offset during the use of the flat cable; When it is necessary to continue to directional guide the heat inside the flat cable, the heat generated by the aluminum alloy solid conductor 1 is absorbed by the heat-conducting oil inside the guide outer tube 306, and when it is necessary to assist the circulation of the heat-conducting oil inside the guide outer tube 306 and the return inner tube 307, the mini motor 317 is started to drive the mini infusion auger 318 to rotate continuously, and during the rotation of the mini infusion auger 318, the heat-conducting oil inside the connecting installation cover 316 is driven to continuously enter the connecting inner hard tube 310, and a continuous negative pressure is generated inside the connecting installation cover 316, so that the heat-conducting oil inside the guide outer tube 306 can continuously flow into the connecting installation cover 316 through the connecting outer hard tube 311, thereby realizing the local circulation of the heat-conducting oil inside the guide outer tube 306 and the return inner tube 307, and taking the heat generated by the aluminum alloy solid conductor 1 away from the inside of the flat cable during the circulation of the heat-conducting oil; When the high-temperature heat transfer oil circulates through the inside of the connecting installation cover 316, the airflow generated during the movement of the new energy vehicle can pass through the holes on the protective end plate 315 and enter the inside of the active circulation bottom box 313, and the airflow entering the inside of the active circulation bottom box 313 is directional guided by the guide bend plate 314, and the driving blade 319 is driven to rotate continuously by the continuously flowing airflow, and the mini infusion auger 318 is assisted to rotate during the rotation of the driving blade 319, and at the same time, the continuously flowing airflow inside the active circulation bottom box 313 can also assist the heat transfer oil inside the connecting installation cover 316 to dissipate heat; When the new energy vehicle is driving at a low speed, the temperature inside the flat cable is low, and the flat cable needs to be passively cooled. The inertia generated during the bumpy driving of the vehicle is used to assist the driving counterweight 328 to overcome the supporting elastic force of the supporting spring 329 to perform periodic lifting and lowering. In the process of driving the counterweight 328 to rise and fall, the driving rectangular piece 326 and the connecting rod 327 are driven to rise and fall synchronously. When the driving rectangular piece 326 descends along the driving square end box 324, negative pressure is generated inside the driving square end box 324. The heat transfer oil in the outer guide tube 306 is pumped into the driving square end box 324 through the discharge side tube 322 in cooperation with the guide concentric cover 321, and the heat transfer oil in the two driving square end boxes 324 is connected and flowed through the liquid guide side square tube 325. During the rising process of the driving rectangular sheet 326, pressure can be generated inside the driving square end box 324, so that the heat transfer oil in the driving square end box 324 can be guided into the connecting inner hard tube 310 through the cooperation of the guide concentric cover 321 and the return side tube 323. When the heat dissipation efficiency inside the flat cable needs to be enhanced, the connecting rubber plug 312 can be removed, and then the ends of the flow guide outer tube 306 and the return inner tube 307 are respectively connected to the inlet and outlet ends of the external radiator to enhance the heat dissipation efficiency during the circulation of the heat transfer oil. At the same time, the positions of the active circulation bottom box 313 and the passive circulation bottom box 320 are changed and adjusted by changing the length of the connecting inner hard tube 310 and the connecting outer hard tube 311 to ensure that sufficient airflow can enter the active circulation bottom box 313 and ensure that the passive circulation bottom box 320 can vibrate sufficiently. When the flat cable needs to be assisted in installation, due to the shape of the flat cable, the flat cable is often stuck in the groove of the plate at the bottom of the car during installation. When the flat cable needs to be stuck in the groove, the outer side of the flat cable is protected by installing the protective strip 401 and the protective side strip 403 to prevent the outer skin of the flat cable from being damaged during installation, which affects the normal protection of the outer side of the flat cable. The side of the installation protective strip 401 is hard-protected by the protective hard sheet 402, thereby effectively improving the mechanical strength of the flat cable. When the flat cable needs to be clamped into the interior of the groove, the central supporting spring clip 405 is used to provide mechanical elastic support to the interior of the protective side strip 403, and the elastic groove 406 is used to assist the central supporting spring clip 405 in bending and deforming. The central expansion groove 407 is then used to assist the central supporting spring clip 405 in deformation, and the central connecting rope 408 is used to assist in connecting the central supporting spring clips 405. The elastic deformation of the elastic buffer airbag 409 makes the outer side of the protective side strip 403 fit more closely with the inner wall of the groove, so as to achieve tight installation of the flat cable.

[0022] Finally, it should be noted that the above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An aluminum alloy flat cable for new energy vehicles, comprising an aluminum alloy solid conductor (1), characterized in that: A composite insulating layer (2) is provided on the outer side of the aluminum alloy solid conductor (1); A multifunctional directional heat conduction circulation mechanism (3) is arranged inside the composite insulation layer (2), and the multifunctional directional heat conduction circulation mechanism (3) is used to isolate the temperature inside the cable and to assist in dissipating the heat inside the cable during the use of the cable; The multifunctional directional heat conduction circulation mechanism (3) comprises an aerogel heat insulation layer (301); The composite insulation layer (2) is coated with an aerogel thermal insulation layer (301), a limited central groove (302) is provided on the inner side of the aerogel thermal insulation layer (301), a thermal conductive silicone sheet (303) is clamped on the inner side of the limited central groove (302), a central connecting sleeve (304) is connected to the middle of the thermal conductive silicone sheet (303), and limited elastic lines (305) are inserted and connected at the four corners of the central connecting sleeve (304); An outer flow guide tube (306) is inserted into the inner side of the central connecting sleeve (304), an inner return tube (307) is inserted into the inner side of the outer flow guide tube (306), and an inner support ring (308) is sleeved on the outer side of the inner return tube (307); A connecting inner hard pipe (310) is fixedly mounted on the bottom of the side of the return inner pipe (307), and a connecting outer hard pipe (311) is connected inside the flow guiding outer pipe (306).

2. The aluminum alloy flat cable for new energy vehicles according to claim 1, characterized in that: The aluminum alloy solid conductor (1) has a nominal cross-sectional area of ​​30 mm 2 ~500mm 2 , its cross-sectional shape is rectangular or elliptical, and the ratio of width to thickness is 4.5 to 8.5; The aluminum alloy solid conductor (1) has a tensile strength of ≥135 MPa, a yield strength of ≥90 MPa, a HV Vickers hardness of ≥43, an elongation at break of ≥16.5%, and a conductivity of ≥59.5% IACS; The aluminum alloy solid conductor (1) has a transverse bending radius that satisfies 1D to 3D; The four corners of the aluminum alloy solid conductor (1) are arc chamfered, and the chamfer radius is 0.8 to 3.0 mm; The composite insulating layer (2) is made of nylon, silicone rubber, PVC, XLPE, XLPO or TPE polymer series; When the cross-sectional shape of the aluminum alloy solid conductor (1) is an ellipse, the two narrow sides of the ellipse conductor are semicircular transitions, and the radius thereof is 1 / 2 of the thickness value; The aluminum alloy solid conductor (1) and the percentage of each component are: Si: 0.35-0.55, Mg: 0.40~0.60, Fe: 0.05~0.25, Cu: content not more than 0.01, Mn: content not more than 0.03, Cr: content not more than 0.01%, B: content not more than 0.01, Zn: content not more than 0.01, the balance is Al and unavoidable impurities, the content of each unavoidable impurity is not more than 0.03, and the total impurity content is not more than 0.10; The aluminum alloy solid conductor (1) also includes an end head, and the end head can be arbitrarily adjusted in design and connected according to the structural requirements of the in-vehicle connector.

3. The aluminum alloy flat cable for new energy vehicles according to claim 1, characterized in that: The inner side of the aerogel insulation layer (301) is tightly fitted to the aluminum alloy solid conductor (1) and the outer side of the thermally conductive silicone sheet (303), and the inner side of the thermally conductive silicone sheet (303) is tightly fitted to both sides of the central connecting sleeve (304); The ends of the flow guiding outer tube (306) and the return flow inner tube (307) are both movably clamped with sealing end plugs (309), and the interiors of the flow guiding outer tube (306) and the return flow inner tube (307) are both filled with heat transfer oil; A connecting mounting cover (316) is provided at the bottom of the connecting inner hard tube (310) and the connecting outer hard tube (311); the inner cavities of the flow guiding outer tube (306) and the return inner tube (307) are connected via the connecting mounting cover (316); and the top end of the connecting mounting cover (316) is fixedly connected to the top surface of the inner cavity of the active circulation bottom box (313).

4. The aluminum alloy flat cable for new energy vehicles according to claim 1, characterized in that: A connecting rubber plug (312) is tightly sleeved on the outside of the connecting external hard pipe (311), an active circulation bottom box (313) is bonded to the bottom of the connecting rubber plug (312), flow guide curved plates (314) are fixedly clamped at both ends of the inside of the active circulation bottom box (313), and protective end plates (315) are embedded and installed in the middle of both ends of the active circulation bottom box (313); A mini motor (317) is clamped at a position corresponding to the bottom of the outer hard tube (311) connected to the middle of the bottom surface of the active circulation bottom box (313); the mini motor (317) is powered by an external power supply; a mini infusion auger (318) is connected to a position corresponding to the inside of the inner hard tube (310) at the top of the output shaft of the mini motor (317) via a one-way bearing; a driving blade (319) is fixedly sleeved at a position corresponding to the bottom of the inner side of the active circulation bottom box (313); One end of the bottom of the composite insulating layer (2) away from the active circulation bottom box (313) is fixedly connected to the passive circulation bottom box (320) via another set of connecting inner hard tubes (310) and connecting outer hard tubes (311); the bottom ends of the connecting inner hard tubes (310) and connecting outer hard tubes (311) are fixedly connected to a guide concentric cover (321) at a position corresponding to the interior of the passive circulation bottom box (320); one side of the guide concentric cover (321) is fixedly connected to a drainage side pipe (322) at a position corresponding to the bottom of the connecting outer hard tube (311); and the other side of the guide concentric cover (321) is fixedly connected to a return side pipe (323) at a position corresponding to the bottom of the connecting inner hard tube (310); The ends of the liquid discharge side tube (322) and the return side tube (323) are both fixedly connected to a driving square end box (324), and liquid guide side square tubes (325) are fixedly installed at positions on both sides between the two driving square end boxes (324); A driving rectangular piece (326) is slidably engaged at the bottom of the inner side of the liquid-conducting side square tube (325), a connecting rod (327) is fixedly connected to the bottom of the driving rectangular piece (326), and driving counterweight blocks (328) are fixedly connected to the ends of the connecting rod (327) at positions corresponding to both ends of the interior of the passive circulation bottom box (320), and supporting springs (329) are embedded and installed in the middle of both ends of the bottom surface of the driving counterweight block (328).

5. The aluminum alloy flat cable for new energy vehicles according to claim 4, characterized in that: The guide curved plates (314) are centrally symmetrically distributed inside the active circulation bottom box (313), and the two ends of the active circulation bottom box (313) are internally connected to each other. Air guide holes are evenly opened at the corresponding ends of the two protective end plates (315), and the outer side of the driving blade (319) and the inner side of the guide curved plates (314) are tightly slidably fitted.

6. The aluminum alloy flat cable for new energy vehicles according to claim 4, characterized in that: The bottoms of the connecting inner hard tube (310) and the connecting outer hard tube (311) inside the flow-guiding concentric cover (321) are not connected to each other, and a one-way valve is embedded in the middle of the outer sides of the discharge side tube (322) and the return side tube (323).

7. The aluminum alloy flat cable for new energy vehicles according to claim 4, characterized in that: The driving square end boxes (324) are connected to each other via a liquid-conducting side square tube (325); the outer side of the driving rectangular sheet (326) is tightly slidably fitted with the inner wall of the driving square end box (324); a limited position fine frame is provided on the inner top of the driving square end box (324); the outer side surface of the driving counterweight block (328) is tightly slidably fitted with the inner wall of the passive circulation bottom box (320); and the bottom end of the support spring (329) is tightly fitted with the inner bottom surface of the passive circulation bottom box (320).

8. The aluminum alloy flat cable for new energy vehicles according to claim 1, characterized in that: An outer ring protection installation mechanism (4) is arranged outside the composite insulating layer (2); The outer ring protection installation mechanism (4) comprises an installation protection strip (401); The top and bottom of the outer side of the composite insulating layer (2) are both bonded with installation protection strips (401), and a protection hard sheet (402) is evenly and equidistantly embedded in the middle of the side of the installation protection strip (401), and a protection side strip (403) is fixedly connected between the two side surfaces of the installation protection strips (401), and the top and bottom of the protection side strips (403) are both provided with extrusion arc grooves (404), and a central support spring sheet (405) is evenly and equidistantly inserted in the middle of the inner side of the protection side strip (403); The end of the central supporting spring sheet (405) is evenly and evenly provided with elastic grooves (406), a central expansion groove (407) is provided in the middle of one side of the central supporting spring sheet (405), a central connecting rope (408) is inserted through the middle of the central supporting spring sheet (405), and elastic buffer air bags (409) are inserted through the top and bottom of the protective side strip (403).

9. The aluminum alloy flat cable for new energy vehicles according to claim 8, characterized in that: The side surface of the protective hard sheet (402) and the side surface of the installation protective strip (401) are flush with each other, the inner side of the protective side strip (403) and the outer side of the composite insulating layer (2) are tightly fitted, and the side surface of the installation protective strip (401) and the protective side strip (403) are connected via a card slot.

10. The aluminum alloy flat cable for new energy vehicles according to claim 8, characterized in that: The outer side of the central supporting spring sheet (405) is tightly fitted to the inner side of the protective side strip (403), and the elastic buffer airbag (409) is compressed after being squeezed.

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