Cable storage device and charging equipment

Abstract

The invention discloses a cable storage device and charging equipment, the cable storage device comprises a cable body, a cable storage mechanism and a take-up and pay-off mechanism, the cable storage mechanism comprises a storage box and a rotating assembly arranged in the storage box, and a limiting groove is formed between the storage box and the rotating assembly; the cable body sleeves the rotating assembly in a spiral winding and stacking manner and is accommodated in the limiting groove; a first inlet / outlet and a second inlet / outlet which are used for communicating the limiting groove with the outside are formed in the storage box; the take-up and pay-off mechanism is connected with the cable body, and the take-up and pay-off mechanism can drive the cable body to move and perform take-up or pay-off operation. The cable storage device can automatically pay off or take up the cable, take-up and pay-off are smooth, operation is easy, take-up and pay-off are controllable, and the problems that traditional storage equipment is low in space utilization rate, too large in occupied space, difficult in cable take-up and pay-off operation, uncontrollable in cable withdrawing and the like are solved.

Description

Technical Field

[0001] The present invention relates to a charging device, and particularly to a cable storage device and a charging device. Background Art

[0002] The high-voltage fast-charging cable of new energy vehicles is thick, heavy, and cumbersome, which causes difficulties in operation when using fast charging at charging stations (especially unfriendly to women) and chaotic cable management. This has become a major pain point for new energy vehicle users when using fast charging, which seriously conflicts with the environmentally friendly and elegant image of new energy vehicles. After analysis, the thick and heavy cables are mainly caused by the following four reasons: I. The contradiction between high current and conductor cross-sectional area. According to the charging power formula: P = V * I, to achieve high power (such as 350KW), the current needs to be increased significantly when the voltage is fixed. Currently, many manufacturers have developed high-voltage platforms above 800V. However, since the voltage of most fast-charging stations in the market does not reach above 800V, the actual charging voltage is still 400V. Therefore, high-current charging is still an inevitable current situation. And according to the formula for the cross-sectional area of materials and conductors: Q = I² * R, in order to avoid thermal runaway, the cable resistance must be reduced when the current increases. Also, according to the resistance formula: R = ρ * L / A, to reduce the resistance under the same material type and cable length, the cable cross-sectional area A needs to be increased. Under conventional design, the safe current-carrying capacity of copper cables is about 5 - 8A / mm². For a current of 437.5A, the copper cross-sectional area required is at least 55 - 88mm² (corresponding to a wire diameter of 9 - 12mm).

[0003] II. Material density and weight limitations. The currently widely used copper has a density of 8.96g / cm³. If the cable is 5 meters long and has a cross-sectional area of 70mm², the weight of only the copper conductor is about 3.14kg. The actual cable is even heavier after including the insulating layer / shielding layer. The density of the alternative material aluminum (2.7g / cm³) is only 30% of that of copper, but its conductivity is only 60%, and a larger cross-sectional area (about 1.6 times that of copper) is required, resulting in limited weight savings and easy oxidation. Although carbon fiber composite conductors are light, they are costly and have insufficient conductivity, and are only suitable for auxiliary structures. Therefore, copper cables are still the best choice for fast-charging cables before new materials achieve a breakthrough.

[0004] III. The superposition of heat dissipation and insulation requirements. (1) Thermal management requirements: High current causes the cable to heat up, and heat dissipation needs to be achieved through the following methods: thickening the insulating layer, such as XLPO material resistant to 150°C, with a thickness 20% - 30% greater than that of ordinary PVC; adding a heat dissipation structure, such as a metal braid layer or a liquid-cooling pipe (for example, the outer diameter of the liquid-cooling cable of a certain vehicle model reaches 38mm); (2) High-voltage insulation requirements: Systems of 800V and above require a thicker insulating layer (such as 0.5 - 1mm cross-linked polyethylene) and additional multiple shields (copper mesh + aluminum foil), resulting in an increase in the outer diameter.

[0005] IV. Safety Standards and Mechanical Protection. According to the mandatory requirements of the international standard IEC 62196-2, the bending life of the DC charging cable should be > 10,000 times, and the anti-fatigue layer (such as a spiral steel wire sheath) needs to be strengthened. In addition, in order to meet the requirements of IP67 protection, the waterproof sealing structure increases the thickness of the cable jacket. Additionally, redundant design is generally considered for mechanical strength. The cables of public charging piles need to withstand external forces such as dragging and rolling, and usually a Kevlar fiber tensile layer (thickness 0.3 - 0.5 mm) and a polyurethane wear-resistant outer layer (hardness 90A) are added.

[0006] In summary, the problem of thick, heavy, and bulky high-voltage fast-charging cables is an inevitable result of physical laws, material properties, and engineering safety. Before the breakthrough of superconducting technology or wireless fast-charging technology, this problem cannot be fundamentally solved in the short term. Some mitigation measures such as liquid cooling, high-conductivity materials, and structural optimization can partially reduce the weight, but all rely on the breakthrough of physical limits. Therefore, based on the current reality, a cable storage device is needed that can store and organize high-voltage fast-charging cables and reduce their space occupancy. Summary of the Invention

[0007] In view of this, the purpose of the present invention is to provide a cable storage device and a charging device that can automatically pay out or take in the cable, with smooth pay-out and take-in, simple operation, and controllable pay-out and take-in, overcoming the problems of low space utilization rate, too large space occupancy, difficult cable pay-out and take-in operations, and uncontrollable cable retraction existing in traditional storage devices.

[0008] A cable storage device in the present invention includes a cable body, a cable storage mechanism, and a pay-out and take-in mechanism. The cable storage mechanism includes a storage box and a rotating component disposed in the storage box. A limiting groove is formed between the storage box and the rotating component. The cable body is spirally wound and stacked outside the rotating component and stored in the limiting groove. The storage box is provided with a first inlet / outlet and a second inlet / outlet that communicate the limiting groove with the outside. The pay-out and take-in mechanism is connected to the cable body and can drive the cable body to move and perform pay-out or take-in operations.

[0009] Further, the pay-out and take-in mechanism includes a pay-out and take-in support and a driving component disposed on the pay-out and take-in support. The pay-out and take-in support is connected to the storage box. The driving component includes a driving element, a driving pulley, and a driven pressing wheel. The cable body is clamped between the driving pulley and the driven pressing wheel. The driving element is in transmission connection with the driving pulley through a transmission component.

[0010] Furthermore, a clearance channel for the cable body to pass through is provided at the position of the wire reeling and releasing bracket corresponding to the first inlet and outlet, and the active pulley and the driven pressure wheel are respectively located on different sides of the clearance channel, and the active pulley and the driven pressure wheel are both provided with an arc-shaped groove that conforms to the outer contour of the cable body.

[0011] Furthermore, a mounting hole and a clamping hole are provided inside the retractable wire bracket, and the clamping hole is located on a side of the mounting hole away from the active pulley; the driven wheel rotating shaft of the driven clamping wheel is inserted into the mounting hole, the inner diameter of the mounting hole is larger than the outer diameter of the driven wheel rotating shaft, the axis of the clamping hole and the axis of the driven wheel rotating shaft are perpendicular to each other, a compression spring is provided in the clamping hole, and a plug is provided at one end of the clamping hole away from the driven wheel rotating shaft, one end of the compression spring abuts on the plug, and the other end of the compression spring abuts on the driven wheel rotating shaft, and the compression spring is in a compressed state so that the driven clamping wheel has a movement tendency toward the side close to the active pulley.

[0012] Furthermore, the wire retracting and releasing mechanism also includes a guide pulley for guiding the movement of the cable body; a charging gun is provided at the end of the cable body, and a charging gun bracket is provided on the storage box, and the guide pulley and the charging gun bracket are respectively located on different sides of the first inlet and outlet.

[0013] Furthermore, the cable retracting and releasing mechanism also includes a control system, which can control the working state of the driving element; a pressure sensor is provided at one end of the cable body close to the charging gun, and the pressure sensor is communicatively connected to the control system.

[0014] Furthermore, the rotating assembly includes a rotating barrel and a wire-catching component, the rotating barrel is rotatably arranged in the storage box, the wire-catching component includes a slide rail, a slider, a tension spring, a roller shaft and a wire-catching roller, the slide rail is fixedly connected to the rotating barrel, the slider is connected to the slide rail in a manner that can slide in the up and down directions, the wire-catching roller is rotatably mounted on the slider via the roller shaft, the lower end of the tension spring is fixedly connected to the lower part of the slide rail, the upper end of the tension spring is fixedly connected to the slider, the tension spring is in a stretched state so that the slider and the wire-catching roller have a downward movement tendency, the lower part of the wire-catching roller abuts against and presses down the cable body, so that the cable bodies located in the limiting grooves are tightly stacked in the up and down directions.

[0015] Further, the rotating assembly further includes a base shaft rod, an upper rotating transmission member, a lower rotating transmission member, and a energy storage spring. The base shaft rod is disposed inside the rotating barrel. The lower part of the base shaft rod is fixedly connected to the storage box. The upper part of the base shaft rod is rotatably connected to the upper part of the rotating barrel through the upper rotating transmission member. The lower part of the rotating barrel is rotatably connected to the storage box through the lower rotating transmission member. The inner ring end of the energy storage spring is connected to the base shaft rod or the storage box, and the outer ring end of the energy storage spring is connected to the slide rail.

[0016] Further, the storage box includes an upper cover body, a middle cylinder body, and a lower base body which are arranged in sequence from top to bottom. The first inlet and outlet is arranged in the middle of the upper cover body. The wire winding and unwinding mechanism is connected to the upper cover body. The second inlet and outlet is arranged at the lower part of the middle cylinder body. The rotating assembly is connected to the lower base body.

[0017] A charging device in the present invention includes the above-mentioned cable storage device.

[0018] The beneficial effects of the present invention are as follows: (1) By storing the cable body in the limiting groove, the present invention can improve the space utilization rate, prevent the thick and heavy cable from occupying a large amount of space. And since the power is provided by the wire winding and unwinding mechanism during the winding and unwinding process of the cable, it can automatically unwind or wind the cable, with smooth winding and unwinding, simple operation and controllable winding and unwinding, overcoming the problems of low space utilization rate, too large occupied space, difficult cable winding and unwinding operation, uncontrollable cable rewinding, etc. existing in the traditional storage device.

[0019] (2) The present invention can realize the electric control and automatic winding and unwinding of the cable body. Moreover, the arc-shaped grooves of the driving pulley and the driven pressing wheel can increase the friction area, which is beneficial to driving the cable body to move. The pressure distribution acting on the surface of the cable body is relatively uniform, which can prevent damage to the cable body.

[0020] (3) The present invention can ensure that the cable body is clamped between the driving pulley and the driven pressing wheel, thereby ensuring that the friction force between the surfaces of the driving pulley and the driven pressing wheel and the cable body meets the requirements, preventing the driving pulley or the driven pressing wheel from slipping when the driving element works, and ensuring the reliability of the device.

[0021] (4) The pressure sensor of the present invention can further improve the automation degree.

[0022] (5) Whether winding or unwinding the cable, the wire guiding roller can maintain a downward pressing state to provide pressure on the cable body, ensuring that the cable bodies in the limiting groove are tightly stacked in the up and down direction, and can wind or unwind the cable in an orderly manner in circles, preventing the winding and stacking state from being chaotic.

[0023] (6) The present invention designs a unique annular limit groove structure, ingeniously utilizes the mechanism of spiral winding combined with stacking, and adopts a combination of spring energy storage and elastic wire-catching roller automatic rolling to achieve three-dimensional cable storage. The energy storage spring, wire-catching member and other components work together to achieve efficient cable storage, ensure the utilization of the storage space, and effectively protect the cables. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration: Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a partial cross-sectional view of the present invention; Figure 3 It is a schematic diagram of the structure of the cable retracting and releasing mechanism of the present invention cooperating with the cable body; Figure 4 It is a structural schematic diagram of the wire-retracting and -releasing mechanism of the present invention; Figure 5 It is a structural schematic diagram of the cable storage mechanism of the present invention; Figure 6 It is a structural schematic diagram of the wire-catching component of the present invention; Figure 7 It is a schematic diagram of the working principle of the present invention when laying out the wire; Figure 8 The figure is a schematic diagram of the working principle of the present invention when winding the line.

[0025] The following are marked in the accompanying drawings: 1-cable body, 101-charging gun; 2-cable storage mechanism, 201-storage box, 2011-upper cover, 2012-middle cylinder, 2013-lower seat, 2014-limiting groove, 2015-second inlet and outlet, 202-rotating assembly, 2021-rotating barrel, 2022-slide rail, 2023-sliding block, 2024-tension spring, 2025-roller shaft, 2026-cable roller, 2027-base shaft, 2028-upper rotation transmission component, 2029-lower rotation transmission component, 20210-energy storage spring, 20211-lower bottom skirt; 3-reeling and reeling mechanism, 301-reeling and reeling bracket, 302-driving element, 303-driving pulley, 304-driven pressing wheel, 305-transmission assembly, 306-clearance channel, 307-arc groove, 308-mounting hole, 309-pressing hole, 3010-compression spring, 3011-plug, 3012-guide pulley, 3013-control system, 3014-thread-spitting button switch, 3015-reeling button switch; 4-Charging gun bracket. Detailed implementation mode

[0026] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0027] As Figures 1 - 8 shown, a cable storage device in this embodiment includes a cable body 1, a cable storage mechanism 2, and a cable winding and unwinding mechanism 3. The cable storage mechanism 2 includes a storage box 201 and a rotating assembly 202 disposed in the storage box 201. A limiting groove 2014 is formed between the storage box 201 and the rotating assembly 202. The cable body 1 is sleeved on the rotating assembly 202 in a spiral winding and stacking manner and stored in the limiting groove 2014. A first inlet and outlet communicating the limiting groove 2014 with the outside and a second inlet and outlet 2015 are provided on the storage box 201. The cable winding and unwinding mechanism 3 is connected to the cable body 1, and the cable winding and unwinding mechanism 3 can drive the cable body 1 to move and perform winding or unwinding operations.

[0028] The cable storage device can be used alone or as an external device of a charging device such as a charging pile. Taking it as an external device of a charging pile as an example, the cable winding and unwinding mechanism 3 further includes a control system 3013. A wire discharging button switch 3014 and a wire winding button switch 3015 capable of controlling the working state of the cable winding and unwinding mechanism 3 are provided on the control system 3013. The cable body 1 is sleeved on the rotating assembly 202 in a spiral winding and stacking manner and stored in the limiting groove 2014. One end of the cable body 1 extends out from the second inlet and outlet 2015 and is connected to the charging pile. The other end of the cable body 1 is connected to the charging gun 101. When the user holds the charging gun 101 and opens the wire discharging button switch 3014, the cable winding and unwinding mechanism 3 works, driving the cable body 1 to move. The cable body 1 moves outwards through the first inlet and outlet from the limiting groove 2014, realizing automatic wire discharging. After the length of the cable body 1 outside the storage box 201 becomes long enough to meet the user's wire discharging requirement, the user closes the wire discharging button switch 3014 and can move the charging gun 101 to the vehicle charging interface for charging. After charging is completed, the user opens the wire winding button switch 3015. The cable winding and unwinding mechanism 3 works, driving the cable body 1 to move. The cable body 1 outside the storage box 201 passes through the first inlet and outlet and moves into the limiting groove 2014, realizing automatic wire winding. After the length of the cable body 1 outside the storage box 201 is shortened to meet the user's wire winding requirement, the user closes the wire winding button switch 3015, and finally places the charging gun 101 on the charging gun hanger 4 or other preset positions.

[0029] Storing the cable body 1 in the limit groove 2014 can improve space utilization and prevent thick and bulky cables from occupying a large amount of space. In addition, since the power is provided by the cable retracting and releasing mechanism 3 during the cable retracting and releasing process, the cable can be automatically released or reeled in, and the reeling and releasing is smooth, the operation is simple and the reeling and releasing is controllable, thus overcoming the problems of low space utilization, large occupied space, difficult cable retracting and releasing operation, and uncontrollable cable retraction in traditional storage equipment.

[0030] In this embodiment, the wire-retracting and releasing mechanism 3 includes a wire-retracting and releasing bracket 301 and a driving assembly arranged on the wire-retracting and releasing bracket 301, the wire-retracting and releasing bracket 301 is connected to the storage box 201, the driving assembly includes a driving element 302, an active pulley 303 and a driven pressure wheel 304, the cable body 1 is clamped between the active pulley 303 and the driven pressure wheel 304, and the driving element 302 is connected to the active pulley 303 through a transmission assembly 305. Among them, the wire-retracting and releasing bracket 301 is connected to the storage box 201, specifically, the wire-retracting and releasing bracket 301 is connected to the upper cover body 2011 of the wire-retracting and releasing. The driving element 302 can be a rotary motor, the transmission assembly 305 is a gear box, and the gear box can be a reduction gear box. The output shaft of the rotary motor can transmit power to the gear box, and the gear box transmits power to the active pulley 303, so that the active pulley 303 is driven to rotate forward or reverse through the driving element 302.

[0031] The cable body 1 is clamped between the active pulley 303 and the driven pressure wheel 304. When the active pulley 303 rotates forward or reversely, the active pulley 303 drives the cable body 1 to move through surface friction, thereby realizing the electrically controlled automatic retraction and extension of the cable body 1. The active pulley 303 can rotate forward to drive the cable body 1 to move outward to realize wire release, and the active pulley 303 can rotate reversely to drive the cable body 1 to move into the limit groove 2014 to realize wire retraction.

[0032] In this embodiment, the position of the wire retracting and releasing bracket 301 corresponding to the first inlet and outlet is provided with a make way channel 306 for the cable body 1 to pass through, the active pulley 303 and the driven pressure wheel 304 are respectively located on different sides of the make way channel 306, and the active pulley 303 and the driven pressure wheel 304 are both provided with an arc groove 307 that conforms to the outer contour of the cable body 1.

[0033] The arc-shaped groove 307 can increase the friction area, which is conducive to driving the cable body 1 to move, and the pressure acting on the surface of the cable body 1 is distributed more evenly, which can prevent damage to the cable body 1.

[0034] In this embodiment, an installation hole 308 and a pressing hole 309 are provided inside the wire winding and unwinding bracket 301. The pressing hole 309 is located on the side of the installation hole 308 away from the driving pulley 303. The driven wheel rotating shaft of the driven pressing wheel 304 is inserted into the installation hole 308. The inner diameter of the installation hole 308 is larger than the outer diameter of the driven wheel rotating shaft. The axis of the pressing hole 309 is perpendicular to the axis of the driven wheel rotating shaft. A compression spring 3010 is arranged in the pressing hole 309. A plug 3011 is arranged at one end of the pressing hole 309 away from the driven wheel rotating shaft. One end of the compression spring 3010 abuts against the plug 3011, and the other end of the compression spring 3010 abuts against the driven wheel rotating shaft. The compression spring 3010 is in a compressed state so that the driven pressing wheel 304 has a movement tendency towards the side close to the driving pulley 303.

[0035] The compression spring 3010 can provide pressure for the driven pressing wheel 304 to ensure that the driven pressing wheel 304 presses on the cable body 1, so as to ensure that the cable body 1 is clamped between the driving pulley 303 and the driven pressing wheel 304. Furthermore, it can ensure that the friction force between the surfaces of the driving pulley 303 and the driven pressing wheel 304 and the cable body 1 meets the requirements, prevent the driving pulley 303 or the driven pressing wheel 304 from slipping when the driving element 302 works, and ensure the reliability of the device.

[0036] In this embodiment, the wire winding and unwinding mechanism 3 further includes a guiding pulley 3012 for guiding the movement of the cable body 1. A charging gun 101 is arranged at the end of the cable body 1. A charging gun hanger 4 is arranged on the storage box 201. The guiding pulley 3012 and the charging gun hanger 4 are respectively located on different sides of the first inlet and outlet.

[0037] The charging gun hanger 4 can be used to place the charging gun 101. In the layout of the cable storage device in this embodiment, it is preferably that the charging gun hanger 4 is located on the side close to the wall or the charging pile, and the guiding pulley 3012 is located on the side close to the vehicle parking position. When the user needs to charge, the user takes the charging gun 101 from the charging gun hanger 4. After the wire winding and unwinding mechanism 3 works to unwind the wire, the user drives the charging gun 101 close to the vehicle. At this time, the cable body 1 leans on the guiding roller. The guiding roller can provide support and can rotate to reduce the friction force. The support of the guiding roller can prevent the cable body 1 from bending or prevent the cable body 1 from rubbing against the wire winding and unwinding bracket 301, which is beneficial to preventing the cable body 1 from rubbing, thereby improving the service life of the cable body 1.

[0038] In this embodiment, the wire winding and unwinding mechanism 3 further includes a control system 3013, and the control system 3013 can control the working state of the driving element 302; one end of the cable body 1 close to the charging gun 101 is provided with a pressure sensor, and the pressure sensor is communicatively connected to the control system 3013.

[0039] The pressure sensor can further improve the degree of automation. The pressure sensor is communicatively connected to the control system 3013. When the pressure sensor contacts the wire winding and unwinding mechanism 3 or the first inlet and outlet during wire winding and the detected pressure is not less than a preset threshold, the pressure sensor sends a signal to the control system 3013. After receiving the signal, the control system 3013 automatically stops wire winding.

[0040] As can be seen from the above, different from the prior art in which the cable needs to be manually pulled out during high-voltage charging, this embodiment designs a brand-new electronically controlled automatic wire winding and unwinding mechanism 3, and integrates this wire winding and unwinding mechanism 3 at the first inlet and outlet on the storage box 201, making the entire charging operation process easy and safe, while making the device compact and lightweight. And there are also designed an active pulley 303 for driving the cable body 1 and a driven pressing wheel 304 for pressing the cable body 1, thus ensuring the stability of the wire unwinding and winding actions of the mechanism.

[0041] In this embodiment, the rotating assembly 202 includes a rotating barrel 2021 and a wire guiding member. The rotating barrel 2021 is rotatably arranged in the storage box 201. The wire guiding member includes a slide rail 2022, a slider 2023, a tension spring 2024, a roller shaft 2025 and a wire guiding roller 2026. The slide rail 2022 is fixedly connected to the rotating barrel 2021. The slider 2023 is connected to the slide rail 2022 in a manner that it can slide in the up and down directions. The wire guiding roller 2026 is rotatably mounted on the slider 2023 through the roller shaft 2025. The lower end of the tension spring 2024 is fixedly connected to the lower part of the slide rail 2022, and the upper end of the tension spring 2024 is fixedly connected to the slider 2023. The tension spring 2024 is in a stretched state so that the slider 2023 and the wire guiding roller 2026 have a downward movement tendency. The lower part of the wire guiding roller 2026 abuts against and presses down the cable body 1, so that the cable body 1 located in the limiting groove 2014 is tightly stacked in the up and down directions.

[0042] During the process of releasing the wire, the cable body 1 moves from the first inlet and outlet to the outside of the limit slot 2014. As the cable body 1 in the limit slot 2014 decreases, the wire-catching roller 2026 moves downward under the action of the tension spring 2024. During the process of collecting the wire, the cable body 1 moves from the first inlet and outlet to the inside of the limit slot 2014. As the cable body 1 in the limit slot 2014 increases, the wire-catching roller 2026 moves upward under the action of the cable body 1 to overcome the elastic force of the tension spring 2024. Therefore, whether collecting or releasing the wire, the wire-catching roller 2026 can maintain a downward pressure state, provide pressure on the cable body 1, ensure that the cable body 1 in the limit slot 2014 is tightly stacked in the up and down direction, and can collect or release the wire in an orderly manner, preventing the entanglement and stacking state from being chaotic.

[0043] In this embodiment, the rotating assembly 202 also includes a base shaft 2027, an upper rotating transmission component 2028, a lower rotating transmission component 2029 and an energy storage spring 20210. The base shaft 2027 is arranged inside the rotating barrel 2021, the lower part of the base shaft 2027 is fixedly connected to the storage box 201, the upper part of the base shaft 2027 is rotatably connected to the upper part of the rotating barrel 2021 through the upper rotating transmission component 2028, and the lower part of the rotating barrel 2021 is rotatably connected to the storage box 201 through the lower rotating transmission component 2029; the inner ring end of the energy storage spring 20210 is connected to the base shaft 2027 or the storage box 201, and the outer ring end of the energy storage spring 20210 is connected to the slide rail 2022.

[0044] When releasing the wire, the energy storage spring 20210 stores energy, and when reeling in the wire, the energy storage spring 20210 releases energy to drive the slide rail 2022 and the rotating barrel 2021 to rotate, and the rotating barrel 2021 can reel in the cable body 1 in cooperation with the wire reeling and releasing mechanism 3. Different from the two-dimensional cable storage methods such as cable folding and winding in the prior art, a unique annular limit groove 2014 structure is designed in this embodiment, which cleverly utilizes the mechanism of spiral winding combined with stacking, and adopts a combination of spring energy storage and elastic wire catching roller 2026 automatic rolling to achieve three-dimensional cable storage. The energy storage spring 20210, the wire catching member and other multiple components work together to achieve efficient cable storage, ensure the utilization rate of the storage space, and effectively protect the cables.

[0045] The upper rotating transmission member 2028 is a radial bearing, the inner ring of which is fixed to the upper part of the base shaft rod 2027, and the outer ring is fixed to the upper part of the rotating barrel 2021. The lower rotating transmission member 2029 is a double-thrust bearing, which is respectively arranged on the upper and lower sides of the lower bottom skirt 20211 of the rotating barrel 2021. The upper side of the lower bottom skirt 20211 of the rotating barrel 2021 is fastened by a bearing pressing plate, and the lower side of the lower bottom skirt 20211 of the rotating barrel 2021 forms a bearing ball groove with the lower seat body 2013.

[0046] In this embodiment, the storage box 201 includes an upper cover body 2011, a middle cylinder body 2012 and a lower seat body 2013 which are arranged in sequence from top to bottom. The first inlet and outlet is arranged in the middle of the upper cover body 2011. The wire winding and unwinding mechanism 3 is connected to the upper cover body 2011. The second inlet and outlet 2015 is arranged at the lower part of the middle cylinder body 2012. The rotating assembly 202 is connected to the lower seat body 2013.

[0047] A charging device in this embodiment includes the above-mentioned cable storage device. The charging device can be a charging pile. One end of the cable body 1 extends out from the second inlet and outlet 2015 and is connected to the charging pile, and the other end of the cable body 1 is connected to the charging gun 101.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A cable storage device, characterized in that: The invention comprises a cable body (1), a cable storage mechanism (2) and a wire-winding and -releasing mechanism (3); the cable storage mechanism (2) comprises a storage box (201) and a rotating assembly (202) arranged in the storage box (201); a limiting groove (2014) is formed between the storage box (201) and the rotating assembly (202); the cable body (1) is sheathed on the rotating assembly (202) in a spirally coiled and stacked manner and is stored in the limiting groove (2014); the storage box (201) is provided with a first inlet and a second inlet and a second inlet (2015) for connecting the limiting groove (2014) with the outside; the wire-winding and -releasing mechanism (3) is connected to the cable body (1); the wire-winding and -releasing mechanism (3) can drive the cable body (1) to move and perform wire-winding or wire-releasing operations.

2. The cable storage device according to claim 1, characterized in that: The wire retracting and releasing mechanism (3) comprises a wire retracting and releasing bracket (301) and a driving assembly arranged on the wire retracting and releasing bracket (301); the wire retracting and releasing bracket (301) is connected to the storage box (201); the driving assembly comprises a driving element (302), an active pulley (303) and a driven pressure wheel (304); the cable body (1) is clamped between the active pulley (303) and the driven pressure wheel (304); and the driving element (302) is connected to the active pulley (303) through a transmission assembly (305).

3. The cable storage device according to claim 2, wherein: The wire retracting and releasing bracket (301) is provided with a clearance channel (306) for the cable body (1) to pass through at a position corresponding to the first inlet and outlet; the active pulley (303) and the driven pressure wheel (304) are respectively located on two different sides of the clearance channel (306); and the active pulley (303) and the driven pressure wheel (304) are both provided with an arc-shaped groove (307) conforming to the outer contour of the cable body (1).

4. The cable storage device according to claim 2, characterized in that: The wire retracting and releasing bracket (301) is provided with a mounting hole (308) and a clamping hole (309) inside, and the clamping hole (309) is located on a side of the mounting hole (308) away from the active pulley (303); the driven wheel rotating shaft of the driven clamping wheel (304) is inserted into the mounting hole (308), the inner diameter of the mounting hole (308) is larger than the outer diameter of the driven wheel rotating shaft, and the axis of the clamping hole (309) and the axis of the driven wheel rotating shaft are perpendicular to each other. A compression spring (3010) is arranged in the clamping hole (309), and a plug (3011) is arranged at one end of the clamping hole (309) away from the driven wheel rotation axis. One end of the compression spring (3010) abuts against the plug (3011), and the other end of the compression spring (3010) abuts against the driven wheel rotation axis. The compression spring (3010) is in a compressed state so that the driven clamping wheel (304) has a tendency to move toward a side close to the active pulley (303).

5. The cable storage device according to claim 2, characterized in that: The wire winding and unwinding mechanism (3) further includes a guiding pulley (3012) for guiding the movement of the cable body (1); a charging gun (101) is provided at the end of the cable body (1), and a charging gun hanger (4) is provided on the storage box (201). The guiding pulley (3012) and the charging gun hanger (4) are respectively located on different sides of the first inlet and outlet.

6. The cable storage device according to claim 5, characterized in that: The wire winding and unwinding mechanism (3) further includes a control system (3013), and the control system (3013) can control the working state of the driving element (302); a pressure sensor is provided at one end of the cable body (1) close to the charging gun (101), and the pressure sensor is communicatively connected to the control system (3013).

7. The cable storage device according to claim 1, wherein: The rotating assembly (202) includes a rotating barrel (2021) and a wire guiding member. The rotating barrel (2021) is rotatably arranged in the storage box (201). The wire guiding member includes a slide rail (2022), a slider (2023), a tension spring (2024), a roller shaft (2025), and a wire guiding roller (2026). The slide rail (2022) is fixedly connected to the rotating barrel (2021). The slider (2023) is connected to the slide rail (2022) in a manner that can slide in the up and down directions. The wire guiding roller (2026) is rotatably mounted on the slider (2023) through the roller shaft (2025). The lower end of the tension spring (2024) is fixedly connected to the lower part of the slide rail (2022), and the upper end of the tension spring (2024) is fixedly connected to the slider (2023). The tension spring (2024) is in a stretched state so that the slider (2023) and the wire guiding roller (2026) have a downward movement tendency. The lower part of the wire guiding roller (2026) abuts against and presses down the cable body (1) so that the cable body (1) located in the limiting groove (2014) is tightly stacked in the up and down directions.

8. The cable storage device according to claim 7, wherein: The rotating assembly (202) further includes a base shaft rod (2027), an upper rotating transmission member (2028), a lower rotating transmission member (2029), and a storage spring (20210). The base shaft rod (2027) is arranged inside the rotating barrel (2021). The lower part of the base shaft rod (2027) is fixedly connected to the storage box (201). The upper part of the base shaft rod (2027) is rotatably connected to the upper part of the rotating barrel (2021) through the upper rotating transmission member (2028). The lower part of the rotating barrel (2021) is rotatably connected to the storage box (201) through the lower rotating transmission member (2029). The inner ring end of the storage spring (20210) is connected to the base shaft rod (2027) or the storage box (201), and the outer ring end of the storage spring (20210) is connected to the slide rail (2022).

9. The cable storage device according to claim 1, wherein: The storage box (201) includes an upper cover body (2011), a middle cylinder body (2012), and a lower seat body (2013) which are arranged in sequence from top to bottom. The first inlet and outlet is arranged in the middle of the upper cover body (2011). The wire winding and unwinding mechanism (3) is connected to the upper cover body (2011). The second inlet and outlet (2015) is arranged at the lower part of the middle cylinder body (2012). The rotating assembly (202) is connected to the lower seat body (2013).

10. A charging device, characterized in that: It includes the cable storage device according to any one of claims 1-9.

Images