Automobile charging pile

Abstract

The invention relates to the field of charging piles, in particular to an automobile charging pile which comprises a charging pile body and a wire harness module. The charging pile body is provided with a charging pile interface; the wire harness module comprises a module shell, a wire spool, a charging wire harness and a wire spool driving part; a containing cavity is formed in the module shell, the wire spool is rotationally matched with the module shell, the wire spool is located in the containing cavity, and the wire spool driving part is used for enabling the wire spool to rotate; the charging wire harness is wound around the wire spool, and the two ends of the charging wire harness are connected with an electric pile connector and an automobile connector respectively. The electric pile connector is matched with the electric pile interface, the electric pile connector and the electric pile interface are in plug-in fit in a detachable mode, the automobile connector is matched with a charging interface of an automobile, and the automobile connector and the charging interface are in plug-in fit in a detachable mode. The charging wire harness has the effect of reducing the situation that the charging wire harness is damaged due to treading.

Description

Technical Field

[0001] This application relates to the field of charging piles, and in particular to a car charging pile. Background Technology

[0002] With the finite availability of traditional fuel resources, the energy crisis has become a major concern, and electric vehicles have emerged as a crucial solution to alleviate this problem. As electric vehicles become more widespread and developed, the demand for charging stations, a vital component of the electric vehicle ecosystem, is increasing daily. Among these, efficient and environmentally friendly DC charging has become the preferred charging method for electric vehicle users.

[0003] In existing related technologies, a charging pile includes a charging pile body and a charging harness. One end of the charging harness is fixedly connected to the charging pile body, and the other end of the charging harness is fixedly installed with a car connector. The car connector is used to detachably plug into and cooperate with the charging interface of an electric vehicle.

[0004] When charging an electric vehicle, the user needs to plug the car connector into the charging port and then start the charging station to charge the electric vehicle. After charging is complete, the user needs to unplug the car connector from the charging port and temporarily install the car connector in the connector holder of the charging station so that the car connector can be removed for subsequent charging. For example, refer to the appendix to the specification of invention patent CN119590238A. Figure 1 .

[0005] Regarding the aforementioned technologies, the applicant discovered in practice that when the charging pile's car connector is temporarily installed behind the charging pile's connector mounting bracket and plugged into the electric vehicle's charging interface, the charging cable harness is often left dragging on the ground, making it susceptible to damage from being stepped on and increasing the maintenance cost of the charging pile. Summary of the Invention

[0006] To reduce the risk of damage to charging cables due to being stepped on, this application provides a car charging station.

[0007] The electric vehicle charging pile provided in this application adopts the following technical solution: A car charging pile includes a charging pile body and a wiring harness module; The charging pile body is equipped with a charging pile interface; The wiring harness module includes a module housing, a winding reel, a charging wiring harness, and a reel drive component. The module housing has an internal receiving chamber. The winding reel is rotatably fitted to the module housing and is located inside the receiving chamber. The reel drive is used to rotate the winding reel. The charging cable harness is wound on a winding reel and is movably installed on the module housing. Both ends of the charging cable harness are respectively connected to a charging pile connector and a vehicle connector. The charging pile connector is matched with the charging pile interface, and the charging pile connector and the charging pile interface are connected in a detachable manner. The car connector is matched with the car's charging interface, and the car connector and the charging interface are connected in a detachable manner.

[0008] By adopting the above technical solution, when an electric vehicle needs to be charged, the user simply takes out the required length of charging cable from the receiving chamber and plugs the charging pile connector and the car connector into the charging port, respectively, to charge the electric vehicle. During charging, any excess charging cable is stored in the receiving chamber, preventing it from being dragged on the ground and reducing the risk of damage from being stepped on.

[0009] After the electric vehicle is fully charged, the user disconnects the charging pile connector and the car connector from the charging interface, respectively. The charging harness is then stored in the housing chamber by the cable reel drive. The user can then transfer and store the harness module in their car or home, allowing for individual use and maintenance of the harness module. This reduces the likelihood of the harness being shared, further minimizing the possibility of the charging harness being dragged on the ground and reducing the maintenance costs of the charging pile.

[0010] Furthermore, it also allows users to power other devices using the charging harness when there is no need to charge the electric vehicle, which helps ensure the applicability of the harness module.

[0011] Optionally, the type of the coil drive is a spiral spring, and the two ends of the coil drive are respectively mounted on the module housing and the winding coil.

[0012] By adopting the above technical solution, when an electric vehicle needs to be charged, the user overcomes the elasticity of the coil drive component and takes out the charging cable harness of the required length from the receiving cavity, and then plugs the charging pile connector and the car connector into the charging pile connector and the charging interface respectively.

[0013] After the electric vehicle is fully charged, the user disconnects the charging pile connector and the car connector from the charging port and charging interface, respectively. Then, the spring force stored in the spiral spring causes the winding reel to rotate in the opposite direction, thereby storing the charging cable harness in the receiving chamber, which helps to reduce the difficulty for the user to store the charging cable harness.

[0014] Optionally, the winding reel has a first reel groove and a second reel groove, the diameter of the second reel groove is larger than the diameter of the first reel groove, and the first reel groove is connected to the second reel groove through a notch; The module housing is rotatably fitted with a locking turntable, the locking turntable is provided with a locking protrusion, the locking protrusion is located away from the axis of the locking turntable, and the locking protrusion slides and engages with the first wire groove and the second wire groove. The winding reel has a locking protrusion at the location of the notch. The locking protrusion has a locking slot for accommodating the locking protrusion. The first reel slot and the second reel slot are both connected to the locking slot. When the locking protrusion is accommodated inside the locking slot, the included angle α between the locking turntable axis and the locking protrusion and the winding reel axis and the locking protrusion is 75° to 105°.

[0015] By adopting the above technical solution, users can pull out a charging cable that meets their needs, and then release the charging cable to cause the winding disc to rotate in the opposite direction and the locking protrusion to be accommodated inside the locking slot. This locks the length of the charging cable to the required length, making it easier for users to control the length of the pulled-out charging cable and reducing the occurrence of charging cables being dragged on the ground due to excessive length.

[0016] Optionally, the type of the coil drive is a motor, and the stator and rotor of the coil drive are respectively mounted on the module housing and the winding coil. The wiring harness module also includes a control button, which is electrically connected to the wire reel drive. The control button has a first control state and a second control state. When the control button switches between the first control state and the second control state, the rotation direction of the rotor of the coil drive switches between the counterclockwise direction and the clockwise direction.

[0017] By adopting the above technical solution, when an electric vehicle needs to be charged, the user can adjust the state of the control button to make the winding reel rotate under the action of the reel drive component, thereby pushing out the charging cable of the required length from the receiving cavity, which makes it convenient for the user to subsequently plug the charging pile connector and the car connector into the charging pile connector and the charging interface respectively.

[0018] After the electric vehicle is fully charged, the user disconnects the charging pile connector and the car connector from the charging port and charging interface, respectively. Then, by adjusting the state of the control button again, the winding reel rotates in the opposite direction, thereby pulling the charging cable harness into the receiving chamber, which helps to reduce the difficulty for the user in storing the charging cable harness.

[0019] Optionally, the wiring harness module further includes an energy storage battery for providing power to the wire reel drive and control buttons.

[0020] By adopting the above technical solution, when the wire harness is pushed out or pulled into the receiving chamber by the wire spool drive, the energy storage battery supplies power to the wire spool drive, so that the wire spool drive does not rely excessively on the external power supply during use, which helps to ensure the ease of use of the wire harness module.

[0021] Optionally, the charging harness is electrically connected to the energy storage battery. When the electric vehicle is charged through the harness module, the current charges the energy storage battery through the charging harness.

[0022] By adopting the above technical solution, the energy storage battery is charged along with the electric vehicle, reducing the need for users to charge or replace the energy storage battery separately, which helps to further ensure the ease of use of the wiring harness module.

[0023] Optionally, the charging pile body is equipped with a liquid cooling module, which is capable of supplying refrigerant; The wiring harness module includes a charging wiring harness, which includes a conductive wire core, a wiring harness input tube, a wiring harness output tube, and a filling inner layer. The conductive wire core, the wiring harness input tube, and the wiring harness output tube are all located inside the filling inner layer. The wire harness input tube is connected to the wire harness output tube, and the wire harness input tube is detachably connected to the charging pile body. The wire harness output tube is connected to a wire harness output connector, and the wire harness output connector is detachably connected to the charging pile body. When both the wire harness input pipe and the wire harness output pipe are connected to the charging pile body, the refrigerant can circulate between the liquid cooling module, the wire harness input pipe, and the wire harness output pipe.

[0024] By adopting the above technical solution, when an electric vehicle needs to be charged, in addition to plugging the charging pile connector and the car connector into the charging pile connector and the charging interface respectively, it is also necessary to connect the wiring harness input connector and the wiring harness output connector to the charging pile output interface and the charging pile input interface respectively. This allows the refrigerant to circulate between the liquid cooling module, the wiring harness input pipe and the wiring harness output pipe, which helps to reduce the adverse effects of the heat generated by the conductive wire core during high-power charging.

[0025] Optionally, the charging pile body is equipped with a cleaning module, which is used to deliver cleaning agent; When both the wire harness input pipe and the wire harness output pipe are connected to the charging pile body, the cleaning agent can circulate between the cleaning module, the wire harness input pipe, and the wire harness output pipe.

[0026] By adopting the above technical solution, after the electric vehicle is fully charged, the cleaning module introduces cleaning agent into the wiring harness input pipe and the wiring harness output pipe to flush out the refrigerant remaining inside the wiring harness input pipe and the wiring harness output pipe, thereby reducing the need for users to clean the wiring harness module.

[0027] Optionally, a control method for a liquid cooling module and a cleaning module includes the following steps: S1. Confirm that the wire harness input tube and wire harness output tube are both connected and in place; S2. The output flow rate Q1 of the refrigerant / detergent from the self-output regulating valve is measured in real time using the output flow meter, and the input flow rate Q2 of the refrigerant / detergent from the self-input regulating valve is measured in real time using the input flow meter. S3. Compare the output flow rate Q1 with the input flow rate Q2.

[0028] If the difference between the output flow rate Q1 and the input flow rate Q2 remains within the error range k within the time period t, it is determined that there is no leakage of refrigerant / cleaning agent, and the refrigerant is continuously supplied through the liquid cooling module, or the cleaning agent is continuously supplied through the cleaning module. If the difference between the output flow rate Q1 and the input flow rate Q2 remains outside the error range k throughout the time period t, it is determined that a refrigerant / cleaning agent leak has occurred, and the delivery of refrigerant through the liquid cooling module is stopped, or the delivery of cleaning agent through the cleaning module is stopped.

[0029] By adopting the above technical solution, the delivery of refrigerant or cleaning agent can be interrupted in time when a leak occurs, thereby reducing the losses caused by the leak and reducing the maintenance costs of the car charging station.

[0030] Optionally, the charging pile body has a module cavity for accommodating the wiring harness module.

[0031] By adopting the above technical solution, the wire harness module located inside the module cavity is less likely to come into direct contact with the outside world, which helps to reduce the occurrence of damage to the wire harness module by collision or trampling.

[0032] In summary, this application includes at least one of the following beneficial technical effects: When an electric vehicle needs charging, the user removes the required length of charging cable from the storage chamber and plugs the charging pile connector and vehicle connector into the charging port respectively to charge the electric vehicle. During charging, any excess charging cable is stored within the storage chamber, preventing it from being dragged on the ground and reducing the risk of damage from being stepped on. After the electric vehicle is fully charged, the user disconnects the charging pile connector and the car connector from the charging interface and the charging cable harness is stored in the housing chamber by the cable reel drive. The user can then transfer and store the cable harness module in their car or home, allowing the user to use and maintain the cable harness module personally, reducing the possibility of sharing the cable harness module, thereby further reducing the likelihood of the charging cable harness being dragged on the ground and reducing the maintenance cost of the charging pile. Furthermore, it also allows users to power other devices using the charging harness when there is no need to charge the electric vehicle, which helps ensure the applicability of the harness module. When an electric vehicle needs to be charged, the user adjusts the state of the control button, causing the winding reel to rotate under the action of the reel drive component, thereby pushing out the charging cable harness of the required length from the receiving cavity, so that the user can then plug the charging pile connector and the car connector into the charging pile connector and the charging interface respectively. After the electric vehicle is fully charged, the user disconnects the charging pile connector and the car connector from the charging port and charging interface, respectively. Then, by adjusting the state of the control button again, the winding reel rotates in the opposite direction, thereby pulling the charging cable harness into the receiving chamber, which helps to reduce the difficulty for the user in storing the charging cable harness. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the opening of the module chamber of the charging pile body in Embodiment 1 of this application.

[0034] Figure 2 This is an overall schematic diagram of the wire harness module in Embodiment 1 of this application.

[0035] Figure 3 This is a first exploded view of the wiring harness module in Embodiment 1 of this application.

[0036] Figure 4 This is a second exploded view of the wiring harness module in Embodiment 1 of this application.

[0037] Figure 5 This is a plan view of the first and second wire grooves in Embodiment 1 of this application.

[0038] Figure 6 This is an overall schematic diagram of the wiring harness module in Embodiment 2 of this application.

[0039] Figure 7 This is a schematic diagram of the winding of the charging harness in Embodiment 2 of this application.

[0040] Figure 8 This is a cross-sectional schematic diagram of the wire harness module in Embodiment 2 of this application.

[0041] Figure 9This is a schematic diagram of the engagement between the locking ratchet ring and the locking ratchet tooth in Embodiment 2 of this application.

[0042] Figure 10 This is an exploded schematic diagram of the locking ratchet ring and locking ratchet teeth in Embodiment 2 of this application.

[0043] Figure 11 This is a cross-sectional schematic diagram of the wire harness module in Embodiment 3 of this application.

[0044] Figure 12 This is an overall schematic diagram of the transmission gear set in Embodiment 3 of this application.

[0045] Figure 13 This is the PID diagram of the liquid cooling module and the cleaning module in Embodiment 4 of this application.

[0046] Figure 14 This is a cross-sectional schematic diagram of the charging harness in Embodiment 4 of this application.

[0047] Explanation of reference numerals in the attached drawings: 1. Charging pile body; 101. Module chamber; 11. Charging pile interface; 12. Output flow meter; 13. Input flow meter; 2. Wiring harness module; 201. Receiving chamber; 202. First wire reel groove; 203. Second wire reel groove; 204. Locking turntable; 205. Sliding protrusion; 206. Locking slot; 207. Locking protrusion; 21. Module shell; 211. Sliding disc; 212. Locking wheel; 2121. Locking linkage; 22. Winding reel; 221. Locking ratchet ring; 222. Locking ratchet tooth; 223. Locking elastic element; 23. Charging wire harness; 231. Conductive wire core; 232. Filler sheath; 233. 1. Insulating outer sheath; 234. Wire harness input tube; 235. Wire harness output tube; 24. Wire reel drive; 25. Control button; 26. Module circuit board; 27. Energy storage battery; 3. Charging pile connector; 4. Automotive connector; 5. Transmission gear set; 51. Transmission sun gear; 52. Transmission planet gear; 53. Transmission gear ring; 6. Liquid cooling module; 61. Radiator; 611. Liquid cooling input pump; 612. Liquid cooling output pump; 62. Cooling fan; 63. Liquid cooling plate; 64. Refrigerant storage tank; 641. Refrigerant replenishment pump; 7. Cleaning module; 71. Cleaning output pump; 711. Output regulating valve; 72. Cleaning input pump; 721. Input regulating valve. Detailed Implementation

[0048] The following is in conjunction with the appendix Figure 1 To be continued Figure 14 This application will be described in further detail. Example

[0049] Embodiment 1 of this application discloses a car charging station. (Refer to...) Figure 1 and Figure 2 The car charging station includes the charging station body 1 and the wiring harness module 2.

[0050] The charging pile body 1 is electrically connected to the power grid, and the charging pile body 1 is provided with a charging pile interface 11 to facilitate charging of electric vehicles through the charging pile interface 11. The charging pile interface 11 may have one or more charging pile interfaces 11. Furthermore, when the charging pile interface 11 has multiple charging pile interfaces 11, the multiple charging pile interfaces 11 are distributed around the charging pile body 1 to facilitate charging of electric vehicles in different locations, thereby increasing the applicability of the charging pile body 1.

[0051] Reference Figure 1 The bottom of the charging pile body 1 has a module chamber 101, which is opened and closed by a cover plate rotatably connected to the charging pile body 1. This allows the wiring harness module 2 to be placed inside the module chamber 101, making it less susceptible to external interference or damage. Furthermore, in this embodiment 1, there are three charging pile interfaces 11. Two interfaces 11 are located on either side of the top of the charging pile body 1, and the remaining interface 11 is located inside the module chamber 101. The interface 11 inside the module chamber 101 is connected to the charging pile body 1 via a charging cable. This provides an interface for quick connection between the wiring harness module 2 and the charging pile body 1 when the wiring harness module 2 is placed inside the module chamber 101, reducing the likelihood of one end of the charging harness 23 being dragged outside the module chamber 101.

[0052] Reference Figure 2 The wiring harness module 2 is set independently of the charging pile body 1, meaning that the wiring harness module 2 can be detached and installed on charging pile bodies 1 of different specifications. Furthermore, when charging an electric vehicle, the user uses their personal wiring harness module 2 for charging.

[0053] Reference Figure 3 and Figure 4 The wiring harness module 2 includes a module housing 21, a winding reel 22, a charging wiring harness 23, and a reel drive 24. The module housing 21 has an internal receiving chamber 201. The winding reel 22 is located inside the receiving chamber 201 and rotatably fitted to the central mounting rod of the module housing 21. An electric slip ring is fixedly mounted on the module housing 21. One end of the charging wiring harness 23 is electrically connected to the mover of the electric slip ring to ensure current transmission between the charging wiring harness 23 and the electric slip ring during rotation.

[0054] The charging cable harness 23 is wound in multiple layers around the winding reel 22 in the radial direction. This reduces the size of the winding reel and facilitates unwinding by pulling the charging cable harness 23 to rotate the winding reel 22, or winding the charging cable harness 23 around the winding reel 22 by rotating the winding reel 22. The winding reel 22, located inside the receiving chamber 201, allows the charging cable harness 23 to be retained entirely or partially within the receiving chamber 201, preventing it from being frequently stepped on or crushed during use or storage, thus reducing the likelihood of damage to the charging cable harness 23.

[0055] In this application, an electric slip ring refers to any known type of electric slip ring in the prior art that allows a conductive rotor to rotate relative to a conductive stator and ensures that the current supply is not interrupted when the conductive rotor rotates through close contact between the rotor and the stator.

[0056] Reference Figure 4 One end of the charging harness 23 is electrically connected to a charging pile connector 3 via a stator fixed by an electric slip ring. The charging pile connector 3 is compatible with the charging pile interface 11. When the charging pile connector 3 is plugged into the charging pile interface 11 of the charging pile body 1, the charging pile body 1 can transmit power from the power grid to the outside through the charging harness 23; when the charging pile connector 3 is pulled out from the charging pile interface 11, the power transmission from the power grid stops through the charging harness 23. Of course, in some embodiments, the charging pile connector 3 can be extended by the charging cable to facilitate connection to charging pile interfaces 11 at different locations.

[0057] The other end of the charging harness 23 is fixedly connected to a car connector 4, which is compatible with the charging interface of the electric vehicle. When the charging pile connector 3 is plugged into the charging pile interface 11 of the charging pile body 1, and the car connector 4 is plugged into the car interface, the charging pile body 1 can transmit power from the power grid to the electric vehicle through the charging harness 23 to charge the electric vehicle; when the charging pile connector 3 is pulled out from the charging pile interface 11, or the car connector 4 is pulled out from the car interface, the power grid stops transmitting power to the electric vehicle through the charging harness 23, thereby stopping the charging of the electric vehicle.

[0058] Therefore, the car connector 4 and the car interface are connected in a detachable manner, and the charging pile connector 3 and the charging pile interface 11 are connected in a detachable manner. This means that when charging an electric vehicle, the charging pile connector 3 and the car connector 4 need to be connected to the charging pile interface 11 and the car interface respectively. After the electric vehicle is charged, the car connector 4 can be unplugged from the car interface, reducing the occurrence of charging cables being left unattended on the ground.

[0059] In addition, in some embodiments, a conversion connector can be provided at the charging pile connector 3 so that the charging harness 23 can be adapted to charging piles 1 of different specifications, thereby ensuring that the harness module 2 can be effectively connected to charging piles 1 of different specifications when necessary, or facilitate connection of other electrical devices when the electric vehicle is externally discharged, thereby ensuring the applicability of the harness module 2.

[0060] The charging harness 23 includes a conductive core, a filling inner layer, and an insulating outer sheath. The conductive core is located inside the filling inner layer, and the insulating outer sheath covers the filling inner layer to facilitate the transmission of charging current through the conductive core, which is made of a conductive metal such as copper. Furthermore, the conductive core is formed by twisting together several conductive wires, each with a cross-sectional area of ​​less than 0.2 mm², allowing the conductive core to deform through the gaps between the wires, resulting in better flexibility.

[0061] The cross-sectional shape of the conductive wire core can be adjusted according to actual conditions, for example, it can be set to circular, square, or rectangular. (Refer to...) Figure 3 and Figure 4 In Embodiment 1 of this application, the cross-section of the conductive wire core is rectangular, and the thickness of the conductive wire core is less than the width of the conductive wire core, so that the conductive wire core can be bent more easily along the thickness direction of the conductive wire core, thereby facilitating the conductive wire core to be wound on the winding reel 22 and reducing the occurrence of the situation where the conductive wire core is too stiff and difficult to wind up.

[0062] The spool drive 24 is used to rotate the winding spool 22 during winding and unwinding. The spool drive 24 can drive the winding spool 22 to rotate through its own elasticity or electric rotation, so as to facilitate the user's winding or unwinding of the wire. The type of spool drive 24 can be a worm spring or a motor.

[0063] In Embodiment 1 of this application, the type of coil drive 24 is a spiral spring, which facilitates the rotation of the winding reel 22 through its own elasticity. The inner and outer rings of the coil drive 24 are fixedly connected to the central mounting rod of the module housing 21 and the winding reel 22, respectively, and the coil drive 24 is sleeved on the central mounting rod of the module housing 21. When the user unwinds the charging cable 23, the elastic force of the coil drive 24 is overcome to remove the charging cable 23 from the receiving chamber 201. When the user rewinds the charging cable 23, the elastic force stored in the coil drive 24 during unwinding causes the winding reel 22 to rotate in the opposite direction, thereby retrieving the charging cable 23 back into the receiving chamber 201.

[0064] Reference Figure 5The winding reel 22 has a first reel groove 202 and a second reel groove 203 on the side facing the slip ring. The diameter of the second reel groove 203 is larger than the diameter of the first reel groove 202, and the first reel groove 202 is connected to the second reel groove through a notch. Combined with... Figure 3 and Figure 4 The module housing 21 is rotatably fitted with a locking turntable 204, and the locking turntable 204 is integrally provided with a sliding protrusion 205. The sliding protrusion 205 is located away from the axis of the locking turntable 204, and the sliding protrusion 205 is slidably fitted with the first wire reel groove 202 and the second wire reel groove 203. A locking protrusion 207 is provided at the location of the notch, and the locking protrusion 207 is fixedly connected to the winding reel. The locking protrusion 207 is provided with a locking slot 206 for accommodating the locking protrusion 207, and the first wire reel groove 202 and the second wire reel groove 203 are both connected to the locking slot 206 through the notch. When the sliding protrusion 205 is accommodated inside the locking slot 206, the included angle α between the axis of the locking turntable 204 and the sliding protrusion 205 and the axis of the winding reel and the sliding protrusion 205 is 75° to 105°, so that the winding reel 22 is less likely to continue rotating under the elastic action of the reel drive 24, thereby making it easier for the user to control the length of the pulled-out charging cable harness 23. In addition, the first reel groove 202 has a beveled opening at the notch, and the second winding reel has a contraction portion at the notch, so that the sliding protrusion 205 can enter the first reel groove 202 from the locking slot 206 along the path L1, or enter the locking slot 206 in the opposite direction from the second reel groove 203 along the path L2.

[0065] For example, refer to Figure 5 The sliding protrusion 205 is initially located inside the locking slot 206. When the user overcomes the elasticity of the coil drive 24 and pulls the charging cable 23, the winding coil 22 moves clockwise. The sliding protrusion 205 moves in the forward direction relative to the winding coil 22 along path L1 or path L2, allowing the winding coil 22 to rotate to the required angle. After the charging cable 23 is pulled to the required length, the user releases the charging cable 23. The sliding protrusion 205 moves in the reverse direction relative to the winding coil 22 along path L1 or path L2, locking the charging cable 23 near the required length. This facilitates control over the length of the charging cable 23 and further reduces the possibility of the charging cable 23 being pulled out too long and dragged on the ground and stepped on.

[0066] The implementation principle of an electric vehicle charging station according to Embodiment 1 of this application is as follows: the wiring harness module 2 and the charging station body 1 are independent of each other, so that the wiring harness module 2 needs to be moved by the user after use, reducing the possibility of premature damage to the wiring harness module 2 due to lack of management. Furthermore, when charging through the wiring harness module 2, the charging cable 23 needs to be pulled out separately from the wiring harness module 2, preventing the charging cable 23 from becoming too long and needing to be dragged on the ground, thus reducing the risk of damage from being stepped on. Example

[0067] Embodiment 2 of this application discloses a wiring harness module that can be used in the car charging pile described in Embodiment 1. (See also...) Figures 6 to 10 The main difference between this module and the wire harness module described in Example 1 is that: The charging cable harness 23 is wound in a different way: the charging cable harness 23 is wound around the winding reel 22 along the axis of the winding reel 22; The winding reel 22 has a different locking method: the winding reel 22 is locked in one direction by locking ratchet ring 221 and locking ratchet tooth 222.

[0068] Specifically, it is described as follows: Reference Figure 9 and Figure 10 A locking ratchet 221 is coaxially fixedly connected to the winding reel 22, with the teeth of the locking ratchet 221 facing inward toward the axis of the winding reel 22. Four locking ratchet teeth 222 are slidably engaged with the module housing 21 via a sliding plate 211, which is fixedly mounted on the module housing 21. The four locking ratchet teeth 222 are circumferentially distributed around the axis of the locking ratchet 221, and all four locking ratchet teeth 222 are slidably engaged with the sliding plate 211 along the radial direction of the locking ratchet 221. The tooth specifications of the locking ratchet teeth 222 are adapted to the specifications of the locking ratchet 221, and the locking ratchet teeth 222 and the sliding plate 211 are also connected by an elastic locking element 223, such as a linear spring, making it easier for the locking ratchet teeth 222 to engage with the locking ratchet 221 under normal conditions.

[0069] The central mounting rod of the module housing 21 is rotatably fitted with a locking wheel 212 via a bearing. The locking wheel 212 is connected to the locking ratchet 222 via a locking link 2121. Both ends of the locking link 2121 are rotatably fitted with the locking wheel 212 and the locking ratchet 222, respectively. This allows the locking wheel 212 to be rotated so that the four locking ratchet 222 move closer to or further away from the locking wheel 212 along the radial direction of the locking ring 221. This ensures that the four locking ratchet 222 are stably engaged with the locking ring 221 or simultaneously disengaged from the locking ring 221.

[0070] When the user pulls the charging cable harness 23 to release the cable, the rotation direction of the locking ratchet ring 221 is the same as the orientation of the teeth of the locking ratchet 222. The locking ratchet ring 221 overcomes the elastic force of the linear spring and pushes open the locking ratchet 222, so that the locking ratchet 222 slides along the sliding disk 211 and drives the locking wheel 212 to rotate through the locking linkage 2121, thereby causing the locking ratchet 222 to disengage from the locking ratchet ring 221, so that the winding reel 22 can rotate without the obstruction of the locking ratchet 222.

[0071] When the user releases the charging cable harness 23 to finish unloading, the rotation direction of the locking ratchet 221 is opposite to the direction of the teeth of the locking ratchet 222. The locking ratchet 221 is pressed against the teeth of the locking ratchet 222, making it difficult for the winding reel 22 to rotate due to the obstruction of the locking ratchet 222. This makes it easier for the user to pull out the charging cable harness 23 of the required length from the receiving chamber 201.

[0072] When the charging cable harness 23 needs to be wound up, the user overcomes the elasticity of the linear spring to rotate the locking wheel 212, which in turn drives the teeth of the four locking ratchet teeth 222 to move away from the teeth of the locking ratchet ring 221 through the locking link 2121. This allows the winding reel 22 to rotate without being obstructed by the locking ratchet teeth 222, and the charging cable harness 23 is then retracted into the receiving chamber 201.

[0073] The implementation principle of a wire harness module in Embodiment 2 of this application is as follows: by locking the ratchet 222, locking the ratchet ring 221 and the wire reel drive 24 of the type of worm spring, the user can conveniently pull out the charging wire harness 23 of the required length when releasing the wire. Example

[0074] Embodiment 3 of this application discloses a wire harness module, the main difference of which is that it differs from the wire harness module described in Embodiment 1 in that: The charging cable harness 23 is wound in a different way: the charging cable harness 23 is wound around the winding reel 22 along the axis of the winding reel 22; The type of the coil drive 24 is different: the type of the coil drive 24 is a motor; The locking method of the winding reel 22 is different: the winding reel 22 is locked by the stationary position of the moving part of the reel drive 24.

[0075] Specifically, it is described as follows: Reference Figures 11 to 12 The coil drive 24 drives the winding reel 22 to rotate via a power source. The stator of the coil drive 24 is fixedly mounted on the central mounting plate of the module housing 21, which is located inside the winding reel 22. The mover of the coil drive 24 drives the winding reel 22 to rotate via a transmission gear set 5.

[0076] The transmission gear set 5 includes a transmission sun gear 51, transmission planet gears 52, and a transmission ring gear 53. The transmission sun gear 51 is coaxially fixedly mounted on the mover of the coil drive 24. There are four transmission planet gears 52, which are circumferentially distributed around the axis of the transmission sun gear 51. The transmission planet gears 52 are rotatably fitted to the module housing 21 and mesh with the transmission sun gear 51. The transmission ring gear 53 is coaxially fixedly mounted on the winding reel 22, and all four transmission planet gears 52 mesh with the transmission ring gear 53. This allows the transmission sun gear 51 to drive the transmission planet gears 52 to rotate, and then the transmission planet gears 52 to drive the transmission ring gear 53 and the winding reel 22 to rotate. This facilitates the winding reel 22 to take in and unwind yarn within the limited internal space of the winding reel 22, thanks to the relatively compact transmission gear set 5 and the small and low-power coil drive 24.

[0077] The wiring harness module 2 also includes a control button 25, a module circuit board 26, and an energy storage battery 27. The control button 25 is fixedly installed on the outside of the module housing 21, and both the control button 25 and the coil drive 24 are electrically connected to the module circuit board 26. The control button 25 has a first control state and a second control state, and when the control button 25 switches between the first control state and the second control state, the rotation direction of the rotor of the coil drive 24 switches between counterclockwise and clockwise directions.

[0078] The energy storage battery 27 is fixedly mounted on the central mounting plate of the module housing 21, and both the energy storage battery 27 and the charging harness 23 are electrically connected to the module circuit board 26. This allows the energy storage battery 27 to store power from the power grid through the current supplied by the charging harness 23 and the module circuit board 26 when the electric vehicle is charging, thereby reducing the need for users to charge or replace the energy storage battery 27 independently. Furthermore, by powering the coil drive 24 and control button 25 through the energy storage battery 27, the power demand of the harness module 2 on the external power grid can be reduced, thus increasing the applicability of the harness module 2. For example, the harness module 2 powered by the energy storage battery 27 can be used for external discharge of electric vehicles to meet the power needs of user camping equipment.

[0079] The implementation principle of a wiring harness module in Embodiment 3 of this application is as follows: a wire reel drive 24, which is of the type of motor, drives the winding reel 22 to rotate, allowing the user to reel in and unwind the wire more conveniently in an electric manner. Furthermore, by integrating the charging of the energy storage battery 27 into the charging process of the electric vehicle, the energy storage battery 27 wiring harness is more easily moved beyond a single application scenario, which helps ensure the applicability of the wiring harness module 2. Example

[0080] Embodiment 4 of this application discloses a car charging pile, which, in addition to all the technical features of Embodiment 1, also includes the following technical features: Reference Figure 13 The charging pile body 1 is equipped with a liquid cooling module 6, which includes a radiator 61, a cooling fan 62, a liquid cooling plate 63, and a refrigerant storage tank 64. The cooling fan 62 is installed on one side of the radiator 61 to blow the heat dissipated by the radiator 61 to the outside of the charging pile. Several liquid cooling plates 63 are provided, each positioned close to a charging unit that generates significant heat during charging, ensuring that the heat generated by the charging unit is promptly transferred to the liquid cooling plate 63. The liquid cooling plate 63 is connected to the input end of the radiator 61 via a liquid cooling input pump 611 and to the output end of the radiator 61 via a liquid cooling output pump 612, facilitating the transfer of heat from the charging unit to the refrigerant and further dissipation of the heat to the outside of the charging pile via the radiator 61. The refrigerant storage tank 64 is connected to the pipeline between the radiator 61 and the liquid cooling plate 63 via a refrigerant replenishment pump 641 to replenish any lost refrigerant. The refrigerant can be a liquid refrigerant, such as water, water-based coolant, fluorinated liquid, or synthetic oil.

[0081] Reference Figure 14 The charging harness 23 also includes a harness input pipe 234 and a harness output pipe 235. Both the harness input pipe 234 and the harness output pipe 235 can be connected to the liquid cooling module 6 to facilitate the delivery of refrigerant from the liquid cooling module 6 to the interior of the harness input pipe 234 and the harness output pipe 235. Furthermore, to facilitate the connection of the harness input pipe 234 and the harness output pipe 235, an electro-hydraulic combination slip ring can be installed on the charging pile body 1 to facilitate the delivery of current and liquid during rotation. The harness input pipe 234 and the harness output pipe 235 are both located inside the filling chamber and are interconnected to allow the refrigerant in the harness input pipe 234 to flow to the harness output pipe 235.

[0082] Reference Figure 13 The charging pile body 1 is also equipped with a cleaning module 7, which includes a cleaning output pump 71 and a cleaning input pump 72.

[0083] The cleaning output pump 71 is detachably connected to the wiring harness input pipe 234 via an output regulating valve 711. The output regulating valve 711 is an electric three-way valve, and the output end of the radiator 61 is connected to one of the valve ports of the output regulating valve 711. This allows the output end of the radiator 61 to be connected to the wiring harness input pipe 234, or the output end of the cleaning output pump 71 to be connected to the wiring harness input pipe 234. The input end of the cleaning output pump 71 is connected to a cleaning agent storage device (not shown) to deliver cleaning agent to the wiring harness input pipe 234 and the wiring harness output pipe 235, thereby cleaning the refrigerant inside the liquid cooling module 6 and remaining inside the wiring harness input pipe 234 and the wiring harness output pipe 235, thus reducing the frequency of user cleaning of the wiring harness module 2.

[0084] The cleaning input pump 72 is detachably connected to the wiring harness output pipe 235 via an input regulating valve 721. The output regulating valve 711 is an electric three-way valve, and the input end of the radiator 61 is connected to one of the valve ports of the input regulating valve 721. This allows the input end of the radiator 61 to be connected to the wiring harness output pipe 235, or the input end of the cleaning input pump 72 to be connected to the wiring harness output pipe 235. The output end of the cleaning input pump 72 is connected to a cleaning agent discharge device to transfer residual refrigerant inside the liquid cooling module 6 and inside the wiring harness input pipe 234 and wiring harness output pipe 235 to the cleaning agent discharge device. Therefore, by adjusting the connection state of the output regulating valve 711 and the input regulating valve 721, the charging wiring harness 23 can be cooled by the liquid cooling module 6 during charging, and the interior of the charging wiring harness 23 and / or the interior of the liquid cooling module 6 can be flushed and maintained by the cleaning module 7 after charging.

[0085] Specifically, in this embodiment 4: the type of cleaning agent is water, the cleaning agent storage device is the municipal water supply network, and the cleaning agent discharge device is the municipal drainage network, so that the charging pile 1 is supplied with water through the existing external water supply network and the cleaned water is discharged through the existing drainage network.

[0086] In addition, an output flow meter 12 is provided at the output end of the output regulating valve 711, and an input flow meter 13 is provided at the input end of the input regulating valve 721, so as to measure the flow rate of refrigerant and cleaning agent.

[0087] In addition, Embodiment 4 of this application also discloses a control method for a liquid cooling module and a cleaning module, including the following steps: S1. Check whether the wire harness input tube 234 and wire harness output tube 235 are connected to the output regulating valve 711 and the input regulating valve 721 respectively according to the standard.

[0088] For example, if the wire harness input tube 234 or the wire harness output tube 235 is connected to the charging pile body 1 by thread engagement, the number of thread engagement turns can be checked to determine whether the number of turns is sufficient, thereby determining whether the connection is sufficiently secure and sealed.

[0089] After the wiring harness input pipe 234 and the wiring harness output pipe 235 are connected and in place according to the standard, refrigerant is introduced into the wiring harness input pipe 234, and the electric vehicle is charged according to the standard power.

[0090] If the wiring harness input pipe 234 and wiring harness output pipe 235 are not connected according to the standard, the user is prompted to check the connection of the wiring harness input pipe 234 and wiring harness output pipe 235. If the user reconnects the wiring harness input pipe 234 and wiring harness output pipe 235 according to the standard as prompted, refrigerant is introduced into the wiring harness input pipe 234, and the electric vehicle is charged at the standard power. If the user does not reconnect the wiring harness input pipe 234 and wiring harness output pipe 235 according to the standard, the introduction of refrigerant into the wiring harness input pipe 234 is stopped, and the electric vehicle is charged at a power lower than the standard power.

[0091] If, in step S1, you confirm that the wire harness input tube 234 and the wire harness output tube 235 are connected and in place according to the standard, continue to execute steps S2 and S3 below.

[0092] S2. The output flow rate Q1 of the refrigerant / cleaner from the self-output regulating valve 711 is measured in real time by the output flow meter 12, and the input flow rate Q2 of the refrigerant / cleaner from the self-input regulating valve 721 is measured in real time by the input flow meter 13.

[0093] S3. Compare the output flow rate Q1 with the input flow rate Q2.

[0094] If the difference between the output flow rate Q1 and the input flow rate Q2 remains within the error range k throughout the time period t, it is determined that there is no leakage of refrigerant / cleaning agent. Both the output regulating valve 711 and the input regulating valve 721 are kept open, and refrigerant is continuously supplied through the liquid cooling module 6, or cleaning agent is continuously supplied through the cleaning module 7. If the difference between the output flow rate Q1 and the input flow rate Q2 remains outside the error range k throughout the time period t, it is determined that there is a leak in the refrigerant / cleaning agent. The output regulating valve 711 and the input regulating valve 721 are both adjusted to the closed state, and the refrigerant is stopped from being delivered through the liquid cooling module 6, or the cleaning agent is stopped from being delivered through the cleaning module 7.

[0095] Therefore, by judging the output flow rate Q1 and input flow rate Q2 of the refrigerant / cleaner in real time, the refrigerant / cleaner supply will be stopped when the output flow rate Q1 and input flow rate Q2 exceed the design value for a long time. This makes it easy to cut off the supply of refrigerant / cleaner in time when the user does not connect the wire harness input pipe 234 and wire harness output pipe 235 according to the standard, thereby reducing the losses caused by refrigerant / cleaner leakage.

[0096] The implementation principle of a car charging pile in Embodiment 4 of this application is as follows: When a user charges an electric vehicle, the charging harness 23 needs to be connected to the liquid cooling module 6 inside the charging pile body 1 to cool the charging harness 23 and ensure that the charging harness 23 is at a suitable operating temperature. Furthermore, after the electric vehicle charging is completed, the cleaning module 7 cleans the refrigerant remaining in the charging harness 23, which helps reduce the frequency of subsequent cleaning of the charging harness 23 by the user.

[0097] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A car charging station, characterized in that: It includes a charging pile body (1) and a wiring harness module (2); The charging pile body (1) is provided with a charging pile interface (11); The wiring harness module (2) includes a module housing (21), a winding spool (22), a charging wiring harness (23), and a spool drive (24); The module housing (21) has an internal receiving chamber (201), the winding disc (22) is rotatably fitted to the module housing (21), and the winding disc (22) is located inside the receiving chamber (201). The winding disc drive (24) is used to rotate the winding disc (22). The charging harness (23) is wound on the winding reel (22), and the two ends of the charging harness (23) are respectively connected to the charging pile connector (3) and the car connector (4); The charging pile connector (3) is matched with the charging pile interface (11), and the charging pile connector (3) and the charging pile interface (11) are connected in a detachable manner. The car connector (4) is matched with the charging interface of the car, and the car connector (4) and the charging interface are connected in a detachable manner.

2. The car charging pile according to claim 1, characterized in that: The type of the coil drive (24) is a spiral spring, and the two ends of the coil drive (24) are respectively mounted on the module housing (21) and the winding spool (22).

3. The car charging pile according to claim 2, characterized in that: The winding spool has a first spool groove (202) and a second spool groove (203). The diameter of the second spool groove (203) is larger than the diameter of the first spool groove (202), and the first spool groove (202) is connected to the second spool groove through a notch. The module housing is rotatably fitted with a locking turntable (204), the locking turntable (204) is provided with a sliding protrusion (205), the sliding protrusion (205) is arranged away from the axis of the locking turntable (204), and the sliding protrusion (205) is slidably fitted with the first wire groove (202) and the second wire groove (203); The winding reel has a locking protrusion (207) at the location of the notch. The locking protrusion (207) has a locking groove (206) for accommodating the locking protrusion (207). The first reel groove (202) and the second reel groove (203) are both connected to the locking groove (206). When the sliding protrusion (205) is accommodated inside the locking groove (206), the included angle α between the axis of the locking turntable (204) and the axis of the winding reel and the sliding protrusion (205) is 75° to 105°.

4. The car charging station according to claim 1, characterized in that: The type of the coil drive (24) is a motor, and the stator and rotor of the coil drive (24) are respectively mounted on the module housing (21) and the winding spool (22); The wire harness module (2) also includes a control button (25), which is electrically connected to the wire reel drive (24); The control button (25) has a first control state and a second control state. When the control button (25) switches between the first control state and the second control state, the rotation direction of the rotor of the coil drive (24) switches between the counterclockwise direction and the clockwise direction.

5. A car charging station according to claim 4, characterized in that: The wiring harness module (2) also includes an energy storage battery (27) for providing power to the wire reel drive (24) and control buttons (25).

6. A car charging station according to claim 5, characterized in that: The charging harness (23) is electrically connected to the energy storage battery (27). When the electric vehicle is charged through the harness module (2), the current charges the energy storage battery (27) through the charging harness (23).

7. The car charging pile according to claim 1, characterized in that: The charging pile body (1) is equipped with a liquid cooling module (6), which can transport the refrigerant; The wiring harness module (2) includes a charging wiring harness (23), which includes a conductive wire core (231), a wiring harness input tube (234), a wiring harness output tube (235), and a filling inner tube (232). The conductive wire core (231), the wiring harness input tube (234), and the wiring harness output tube (235) are all located inside the filling inner tube (232). The wire harness input tube (234) is connected to the wire harness output tube (235). The wire harness input tube (234) is connected to the charging pile body (1) in a detachable manner. The wire harness output tube (235) is connected to the charging pile body (1) in a detachable manner. When the wire harness input pipe (234) and wire harness output pipe (235) are both connected to the charging pile body (1), the refrigerant can circulate between the liquid cooling module (6), the wire harness input pipe (234) and the wire harness output pipe (235).

8. A car charging station according to claim 7, characterized in that: The charging pile body (1) is equipped with a cleaning module (7), which is used to deliver cleaning agent; When the wire harness input tube (234) and wire harness output tube (235) are both connected to the charging pile body (1), the cleaning agent can circulate between the cleaning module (7), the wire harness input tube (234) and the wire harness output tube (235).

9. A car charging station according to claim 8, characterized in that: A control method for a liquid cooling module and a cleaning module is applied, the control method for the liquid cooling module and the cleaning module includes the following steps: S1. Confirm that the wire harness input tube (234) and wire harness output tube (235) are both connected and in place; S2. The output flow rate Q1 of the refrigerant / cleaner of the self-output regulating valve (711) is measured in real time by the output flow meter (12), and the input flow rate Q2 of the refrigerant / cleaner input by the self-input regulating valve (721) is measured in real time by the input flow meter (13). S3. Compare the values ​​of output flow rate Q1 and input flow rate Q2; If the difference between the output flow rate Q1 and the input flow rate Q2 is always within the error range k within the time period t, it is determined that there is no leakage of refrigerant / cleaning agent, and the refrigerant is continuously transported through the liquid cooling module (6), or the cleaning agent is continuously transported through the cleaning module (7). If the difference between the output flow rate Q1 and the input flow rate Q2 is always outside the error range k within the time period t, it is determined that the refrigerant / cleaning agent has leaked, and the delivery of refrigerant through the liquid cooling module (6) is stopped, or the delivery of cleaning agent through the cleaning module (7) is stopped.

10. A car charging station according to claim 1, characterized in that: The charging pile body (1) has a module chamber (101) for accommodating the wiring harness module (2).

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