A charging wire and charging system

Abstract

The application discloses a charging wire and a charging system. The charging wire comprises a gun head, a cable and an electric connector. The gun head is used for electrically connecting with a charging pile. The electric connector is used for electrically connecting with a mobile energy storage device. One end of the cable is connected with the gun head, and the other end of the cable is connected with the electric connector. The gun head is provided with a first signal terminal, a first power terminal and a first ground terminal. The electric connector is provided with a second signal terminal, a second power terminal and a second ground terminal. The cable comprises a signal cable, a power cable and a ground cable. One end of the signal cable is electrically connected with the first signal terminal, and the other end of the signal cable is electrically connected with the second signal terminal. One end of the power cable is electrically connected with the first power terminal, and the other end of the power cable is electrically connected with the second power terminal. One end of the ground cable is electrically connected with the first ground terminal, and the other end of the ground cable is electrically connected with the second ground terminal. The charging wire can realize the charging of the mobile energy storage device by the charging pile, and enriches the charging mode of the mobile energy storage device.

Description

Technical Field

[0001] This application belongs to the field of charging device technology, and more specifically, this application relates to a charging cable and a charging system. Background Technology

[0002] Mobile energy storage devices are portable power supply devices that can break through the limitations of traditional power grids, enabling flexible storage and on-demand distribution of electrical energy. They can provide power for home appliances, outdoor electrical equipment, and other applications, and can be used in various scenarios such as outdoor and home emergencies.

[0003] However, the current power replenishment for mobile energy storage devices is relatively limited, and the charging methods and locations are restricted. Utility Model Content

[0004] The embodiments of this application provide a charging cable that enables charging piles to charge mobile energy storage devices, enriches the charging methods for mobile energy storage devices, better meets users' charging needs and experience, and can also replenish power for mobile energy storage devices outdoors.

[0005] To achieve the aforementioned technical objectives, the first aspect of this application discloses a charging cable, including a charging head, a cable, and an electrical connector. The charging head is used for electrical connection with the charging pile, and the electrical connector is used for electrical connection with the mobile energy storage device. One end of the cable is connected to the gun head, and the other end of the cable is connected to the electrical connector. The gun head is provided with a first signal terminal, a first power terminal and a first ground terminal. The electrical connector is provided with a second signal terminal, a second power terminal and a second ground terminal. The cable includes a signal cable, a power cable and a ground cable. One end of the signal cable is electrically connected to the first signal terminal and the other end of the signal cable is electrically connected to the second signal terminal. One end of the power cable is electrically connected to the first power terminal and the other end of the power cable is electrically connected to the second power terminal. One end of the ground cable is electrically connected to the first ground terminal and the other end of the ground cable is electrically connected to the second ground terminal.

[0006] The second aspect of this application discloses a charging system, which includes a charging pile, a mobile energy storage device, and the charging cable described in the first aspect. The charging gun is plugged into the charging pile to achieve electrical connection, and the electrical connector is plugged into the mobile energy storage device to achieve electrical connection. The beneficial effects of this application are as follows: The charging cable of this application enables charging piles to charge mobile energy storage devices, enriches the charging methods of mobile energy storage devices, better meets users' charging needs and experience, and can also replenish power for mobile energy storage devices outdoors. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the structure of a charging cable according to an embodiment of this application.

[0008] Figure 2 This is a schematic diagram of the structure of a charging cable according to another embodiment of this application.

[0009] Figure 3 This is a schematic diagram of the terminal arrangement inside the gun head according to an embodiment of this application.

[0010] Figure 4 This is a schematic diagram of the cable structure according to an embodiment of this application.

[0011] Figure 5 This is a schematic diagram of the electrical connection between the cable and the gun head according to an embodiment of this application.

[0012] Figure 6 This is a schematic diagram of the structure of a gun head according to an embodiment of this application.

[0013] Figure 7 This is a schematic diagram of the gun head according to another embodiment of this application.

[0014] Figure 8 yes Figure 7 A longitudinal sectional view of the gun head in the illustrated embodiment.

[0015] Figure 9 This is an assembly diagram of the locking device and the contact switch according to an embodiment of this application.

[0016] Figure 10 This is a bottom schematic diagram of a protective shell according to an embodiment of this application.

[0017] Figure 11 This is a schematic diagram of the structure of the electrical connector according to an embodiment of this application.

[0018] Figure 12 This is an exploded view of the electrical connector, aircraft carrier head, and signal switch assembly according to an embodiment of this application.

[0019] Figure 13 This is an exploded view from another angle of the electrical connector, aircraft carrier head, and signal switch assembly according to an embodiment of this application.

[0020] Figure 14 This is a side view of the assembly of the electrical connector and signal switch assembly according to an embodiment of this application.

[0021] Figure 15 yes Figure 14 A schematic diagram of the spring unit on the left side of the middle section.

[0022] Figure 16 This is a top view of the electrical connector according to an embodiment of this application.

[0023] In the picture, 1. Gun head; 101. First signal terminal; 102. First power terminal; 103. First grounding terminal; 11. Housing; 111. First receiving cavity; 112. Mounting port; 113. Support; 1131. Assembly groove; 1132. Positioning groove; 114. Second positioning element; 115. Arc-shaped recess; 116. Sealing groove; 12. Locking device; 121. Locking rod; 1211. Locking part; 1212. Unlocking part; 12121. Pressing position; 1213. Rod body; 1214. Connecting ear; 1215. 1. Reinforcing rib; 1216. First positioning component; 122. Elastic component; 123. Rotating shaft; 124. Rotating shaft hole; 13. Contact switch; 131. Positioning post; 14. Terminal bracket; 141. Through hole; 15. Temperature sensor; 16. First circuit board; 17. Protective shell; 170. Second accommodating cavity; 171. Glue injection guide groove; 172. Reinforcing rib position; 173. Anti-foolproof rib position; 174. Snap-fit ​​groove; 18. First protective sleeve; 2. Cable; 201. Signal cable; 202. Power cable; 203. 21. Grounding cable; 3. Insulating protective sleeve; 4. Electrical connector; 5. Second signal terminal; 6. Second power terminal; 7. Second grounding terminal; 8. Base; 9. First mating rib; 10. Second mating rib; 11. First section; 12. Second section; 13. Third section; 14. Limiting protrusion; 15. Arc-shaped hole; 16. Terminal baffle; 17. Second circuit board; 18. Electrical connection hole; 19. Second protective sleeve; 20. Elastic reset component; 20. Aircraft carrier head; 31. Third... Signal terminal; 402, third power terminal; 403, third grounding terminal; 41, female connector body; 411, first latch; 411a, first beveled part; 5, signal switch assembly; 51, switch body; 511, pressure application part; 512, release recess; 513, retaining rib; 514, second latch; 514a, second beveled part; 52, spring unit; 521, bracket; 522, fixed spring; 522a, fixed contact arm; 523, movable spring; 523a, pressure-bearing protrusion; 523b, movable contact arm. Detailed Implementation The charging cable provided in this application will be explained and described in detail below with reference to the accompanying drawings.

[0024] This embodiment specifically discloses a charging cable, such as... Figure 1 and Figure 2 As shown, it includes a gun head 1, a cable 2 and an electrical connector 3. The gun head 1 is used for electrical connection with the charging pile, the electrical connector 3 is used for electrical connection with the mobile energy storage device, one end of the cable 2 is connected to the gun head 1, and the other end of the cable 2 is connected to the electrical connector 3.

[0025] like Figure 3As shown, the charging head 1 is provided with a first signal terminal 101, a first power terminal 102, and a first ground terminal 103. The charging head 1 also includes a housing 11, inside which a first receiving cavity 111 is provided. The first signal terminal 101, the first power terminal 102, and the first ground terminal 103 are disposed within the first receiving cavity 111 of the housing 11. The housing 11 provides protection for the first signal terminal 101, the first power terminal 102, and the first ground terminal 103, and gives the charging head 1 a flat and aesthetically pleasing appearance. The housing 11 can be cylindrical in shape. The front end of the housing 11 matches the charging pile for plug-in connection, and the rear end of the housing 11 can be open to facilitate cable routing. The front end of the cable 2 can extend into the first receiving cavity 111 of the housing 11 and connect to the terminals of the charging head 1. In this embodiment, the front end refers to the end of the charging cable near the charging pile, and the rear end refers to the end of the charging cable away from the charging pile.

[0026] The electrical connector 3 is provided with a second signal terminal 301, a second power terminal 302 and a second ground terminal 303. The electrical connector 3 also includes a base 31. The second signal terminal 301, the second power terminal 302 and the second ground terminal 303 are disposed in the base 31. The base 31 provides protection for each terminal inside and makes the electrical connector 3 have a flat and beautiful appearance.

[0027] like Figure 4 and Figure 5 As shown, cable 2 includes a signal cable 201, a power cable 202, and a grounding cable 203. One end of the signal cable 201 is electrically connected to the first signal terminal 101, and the other end of the signal cable 201 is electrically connected to the second signal terminal 301, realizing signal transmission and signal control. One end of the power cable 202 is electrically connected to the first power terminal 102, and the other end of the power cable 202 is electrically connected to the second power terminal 302, realizing power transmission. One end of the grounding cable 203 is electrically connected to the first grounding terminal 103, and the other end of the grounding cable 203 is electrically connected to the second grounding terminal 303, preventing leakage and ensuring charging safety.

[0028] This application enables charging piles to effectively and safely charge mobile energy storage devices, enriches the charging methods for mobile energy storage devices, better meets users' charging needs and experience, and allows mobile energy storage devices to be recharged even outdoors.

[0029] The number of first power terminals 102 and first signal terminals 101 can be set as needed, and is usually multiple. The number of first ground terminals 103 is one. For example, the number of first power terminals 102 can be two. The two first power terminals 102 can be positioned above the first ground terminal 103, and the three are arranged in an inverted triangle. Multiple first signal terminals 101 can be arranged in rows or arrays, for example, in a straight line or an arc.

[0030] The type of electrical connector 3 is set according to the charging interface type of the mobile energy storage device. For example, if the charging interface is an aircraft female connector 4, then electrical connector 3 is an aircraft male connector.

[0031] Gun head 1 can be a low-voltage gun head or a high-voltage gun head, depending on the type of charging pile.

[0032] In some alternative embodiments, such as Figure 6 and Figure 7 As shown, the charging gun head 1 is equipped with a locking device 12, which is used to lock the charging gun head 1 to the charging pile in conjunction with the charging pile. The charging pile is equipped with a locking structure that cooperates with the locking device 12. The specific type of the locking device 12 is adjusted according to the type of locking structure on the charging pile. Usually, the locking structure is a locking groove or a locking hook. During charging, the locking structure on the charging pile and the locking device 12 on the charging gun head 1 can cooperate to lock the charging pile and the charging gun head 1, preventing the charging gun head 1 from separating from the charging pile during charging and ensuring the stability of charging.

[0033] When the locking structure on the charging station is a locking hook, such as Figure 6 As shown, the locking device 12 is a locking groove provided on the surface of the gun head 1. When charging is required, the gun head 1 is pushed towards the charging pile until the locking hook of the charging pile is in the locking groove. At this time, the gun head 1 is stably connected to the charging pile. Without applying external force, the gun head 1 will not detach from the charging pile.

[0034] When the locking structure on the charging pile is a locking groove, such as Figures 7-9 As shown, the locking device 12 includes a locking rod 121 and an elastic element 122. The end of the locking rod 121 near the charging pile (i.e., the front end) is provided with a locking part 1211 for locking with the charging pile. Specifically, the locking part 1211 can be a locking hook, extending downwards from the locking rod 121. The top of the end of the locking rod 121 away from the charging pile (i.e., the rear end) is provided with an unlocking part 1212, which protrudes outwards from the housing 11, facilitating the user's finger to press the unlocking part 1212 to apply external force. The locking rod 121 is rotatably connected to the housing 11, allowing it to rotate relative to the housing 11. During rotation, the locking part 1211 includes a locked position and an unlocked position. Under the action of external force, the unlocking part 1212 moves downwards to drive the locking rod 121 to rotate relative to the housing 11, causing the locking part 1211 to move from the locked position to the unlocked position. Figure 8 and Figure 9 As shown, the elastic element 122 is disposed in the first receiving cavity 111 of the housing 11 and located below the locking rod 121. The elastic element 122 is compressed during the process of the locking part 1211 moving from the locked position to the unlocked position, and the locking part 1211 is restored from the unlocked position to the locked position after the external force is removed.

[0035] The elastic element 122 is located behind the rotatable connection between the locking rod 121 and the housing 11, providing a certain supporting force to the rear end of the locking rod 121 to ensure the tightness of the locking part 1211 and the locking groove of the charging pile. The specific location of the elastic element 122 is determined according to the pressing force and unlocking sensitivity. Preferably, the elastic element 122 is located below the unlocking part 1212.

[0036] In the initial state (without external force applied), the locking part 1211 is in the locked position due to its own weight and the supporting force of the elastic member 122. When charging is required, the user pushes the gun head 1 towards the charging station. After the locking part 1211 contacts the charging station, it moves upward and the elastic member 122 is compressed until it falls into the locking groove of the charging station. The locking part 1211 moves to the locked position, and under the action of the elastic member 122 and its own weight, it is firmly locked to the locking groove. After charging is completed, the user needs to press the unlocking part 1212. The elastic member 122 is compressed until the locking part 1211 moves to the unlocking position and disengages from the locking groove, thus unlocking the device. At this time, the user removes the gun head 1 from the charging station. After the user removes the external force, the locking part 1211 returns to the locked position under the restoring force of the elastic member 122.

[0037] like Figures 7-9 As shown, the locking lever 121 may specifically include a locking part 1211, a lever body 1213, and an unlocking part 1212. The locking part 1211 is fixed to the front end of the lever body 1213 and extends downwards from the lever body 1213. The locking part 1211 can be integrally formed with the lever body 1213 to ensure a secure lock. The unlocking part 1212 is located at the top of the rear end of the lever body 1213. The unlocking part 1212 can be integrally formed with the lever body 1213 and can also abut against the lever body 1213. The shape of the unlocking part 1212 can be set as needed. Figure 7As shown, a mounting opening 112 can be provided on the top of the housing 11. The mounting opening 112 communicates with the first accommodating cavity 111. In one embodiment, the locking part 1211, the rod 1213, and the unlocking part 1212 can be located outside the housing 11. The size of the mounting opening 112 can accommodate the portion of the rod 1213 from the rotatable connection point between the rod 1213 and the housing 11 to the rear end of the rod 1213. The rotatable connection point between the rod 1213 and the housing 11 can be located inside the mounting opening 112 or extend through the mounting opening 112 into the first accommodating cavity 111. Under the action of external force, when the unlocking part 1212 moves downward, the rear end of the rod 1213 can move downward into the first accommodating cavity 111. In another embodiment, the rod 1213 is disposed in the first receiving cavity 111, the locking part 1211 is located outside the front end of the housing 11, and the unlocking part 1212 is inserted into the mounting opening 112 with its top protruding outward. When the user presses the unlocking part 1212, the rear end of the rod 1213 moves downward in the first receiving cavity 111. In this embodiment, the unlocking part 1212 can be integrally formed with the rod 1213 or abut against the rod 1213. When the unlocking part 1212 abuts against the rod 1213, the unlocking part 1212 can be slidably connected to the housing 11, similar to a button.

[0038] The length from the rotatable connection point between the locking rod 121 and the housing 11 to the front end of the locking rod 121, and the length from the rotatable connection point between the locking rod 121 and the housing 11 to the rear end of the locking rod 121, can be the same or different. That is, the rotatable connection point between the locking rod 121 and the housing 11 can be located in the middle, the front half, or the rear half of the locking rod 121. The locking rod 121 forms a lever through its rotatable connection with the housing 11. The specific position of the rotatable connection point on the locking rod 121 is set according to the user's operating comfort. Preferably, the distance from the rotatable connection point between the locking rod 121 and the housing 11 to the front and rear ends of the locking rod 121 is the same, that is, the center of the locking rod 121 is rotatably connected to the housing 11. Setting the rotatable connection point at the center of the locking rod 121 allows the rotation amplitude at both ends of the locking rod 121 to be the same, so as to control the amount of rotation of the locking rod 121 and improve the user's comfort when pressing the unlocking part 1212. exist Figures 7-9 Based on the illustrated embodiments, as Figure 8 and Figure 9 As shown, the gun head 1 also includes a contact switch 13. The contact switch 13 is disposed in the first accommodating cavity 111 of the housing 11 and located below the locking rod 121. The contact of the contact switch 13 is pressed by the locking rod 121 during the process of the locking part 1211 moving from the locked position to the unlocked position, so as to disconnect the power to the charging cable.

[0039] The lower surface of the locking lever 121 corresponding to the contact switch 13 can be a horizontal plane or an inclined plane when the locking part 121 is in the locked position, with the inclined plane gradually sloping upwards from front to back. The entire lower surface of the lever 1213 can be an inclined plane, such as... Figure 9As shown, the lower part of the rod 1213 may also be provided with a pressing rib. The lower surface of the pressing rib is a slope. The pressing rib can be strip-shaped, cross-shaped or column-shaped. This application does not make any special limitation on its specific shape.

[0040] As the user presses the unlocking part 1212 to move it downwards, the locking rod 121 rotates relative to the housing 11. The rear end of the locking rod 121 moves downwards, while the front end of the locking rod 121 and the locking part 1211 at the front end move upwards. The locking rod 121 is in an inclined state with the front higher than the back. The inclined surface at the bottom of the locking rod 121 contacts the contact of the contact switch 13 and presses the contact of the contact switch 13, triggering the contact switch 13 and thus disconnecting the charging cable. At this time, the locking part 1211 has not yet moved to the unlock position, and the locking rod 121 continues to rotate. The contact area between the inclined surface at the bottom of the locking rod 121 and the contact of the contact switch 13 becomes larger and larger. If the lower surface of the locking lever 121 corresponding to the contact switch is flat in the initial state, then the lower surface of the locking lever 121 corresponding to the contact switch 13 is inclined, with the front higher than the back. The tail end of the contact surface between the locking lever 121 and the contact of the contact switch 13 exerts greater pressure on the contact of the contact switch 13 than the head end. This pressure is concentrated at the rear of the contact surface, resulting in uneven force on the contact of the contact switch 13, which can easily damage the contact switch 13 and shorten its service life. In this application, the lower surface of the locking lever 121 corresponding to the contact switch 13 is set with an incline. As the locking lever 121 rotates, the inclination of the incline becomes increasingly gentler than in the initial state, becoming closer to a flat surface. The contact area between the locking lever 121 and the contact of the contact switch 13 becomes larger and the contact surface becomes gentler, better conforming to the contact surface of the contact of the contact switch 13. This results in a more uniform pressure distribution on the contact of the contact switch 13, effectively reducing the impact on the lifespan of the contact switch 13.

[0041] The contact switch 13 is located behind the locking part 1211. The closer the contact switch 13 is to the unlocking part 1212, the greater the time difference between the electrical signal disconnection and mechanical unlocking. The contact switch 13 can also be located in front of the rotational connection between the locking rod 121 and the housing 11. In this case, the contact switch 13 can be located closer to the rotational connection between the locking rod 121 and the housing 11, increasing the time difference between the electrical signal disconnection and mechanical unlocking. Alternatively, the contact switch 13 can be located behind the rotational connection between the locking rod 121 and the housing 11, further increasing the time difference compared to being located in front of the rotational connection. Preferably, the contact switch 13 is located behind the rotational connection between the locking rod 121 and the housing 11. In this case, the contact switch 13 can be located in front of or behind the elastic member 122. To reduce the pressure on the contact switch 13 and extend its service life, it is preferable that the contact switch 13 is located in front of the elastic member 122.

[0042] In this embodiment, the contact switch 13 is a push-button contact switch, which can be a normally closed switch or a normally open switch. The opening and closing states are switched by the pressure on the top contact, thereby causing the charging cable to be de-energized.

[0043] Optionally, the contact switch 13 can be a push-button switch or a micro switch. The contact switch 13 is preferably a micro switch, which has the advantages of low triggering force, short triggering stroke, high sensitivity and fast response speed.

[0044] The contact switch 13 can be electrically connected to the controller. When the contact switch 13 is triggered, the triggered signal is transmitted to the controller, and the controller controls the charging cable to disconnect from the power.

[0045] In some optional embodiments, when the locking part 1211 is in the locked position, the bottom of the locking part 1211 is not higher than the bottom of the rotatable connection between the locking rod 121 and the housing 11, that is, the bottom of the locking part 1211 is lower than the bottom of the rotatable connection between the locking rod 121 and the housing 11, or the bottom of the locking part 1211 and the bottom of the rotatable connection between the locking rod 121 and the housing 11 are on the same horizontal line, ensuring the depth of the locking part 1211 entering the locking groove. After plugging into the charging pile, and without pressing the unlocking part 1212, the small torque generated by forcefully pulling the charging cable is avoided from directly hot-plugging the charging head.

[0046] In some optional embodiments, one of the locking rod 121 and the housing 11 is provided with a rotating shaft 123, and the other is provided with a rotating shaft hole 124. The rotating shaft hole 124 is sleeved on the rotating shaft 123 to realize the rotatable connection between the locking rod 121 and the housing 11. When the locking part 1211 is in the locked position, the bottom of the locking part 1211 is not higher than the bottom of the rotating shaft 123 or the rotating shaft hole 124 on the locking rod 121. The rotating shaft 123 can be inserted into or integrally formed with the locking rod 121 or the housing 11 to realize the relative fixation of the rotating shaft 123 with the locking rod 121 or the housing 11. When the rotating shaft 123 is provided on the locking rod 121, the rotating shaft 123 and the locking rod 121 rotate relative to the housing 11 and the rotating shaft hole 124; when the rotating shaft 123 is provided on the housing 11, the locking rod 121 rotates around the rotating shaft 123 through the rotating shaft hole 124.

[0047] In some optional embodiments, one of the locking rod 121 and the housing 11 is provided with two symmetrically arranged cylindrical protrusions, and the other is provided with two symmetrically arranged pivot holes 124. The pivot holes 124 are fitted onto the cylindrical protrusions one-to-one to realize the rotatable connection between the locking rod 121 and the housing 11. When the locking part 1211 is in the locked position, the bottom of the locking part 1211 is not higher than the bottom of the cylindrical protrusions on the locking rod 121 or the pivot holes 124. The cylindrical protrusions are integrally formed with or inserted into the locking rod 121 or the housing 11 to which they are located.

[0048] In some alternative embodiments, such as Figure 9 As shown, the housing 11 is provided with a pivot 123 or two symmetrically arranged cylindrical protrusions. The locking rod 121 has symmetrical pivot holes 124 on both sides. The locking rod 121 is fitted onto the pivot 123 or cylindrical protrusions on the housing 11 through the pivot holes 124. A reinforcing rib 1215 is provided between the two sides of the locking rod 121. Connecting ears 1214 can be provided on both sides of the locking rod 121, and the pivot holes 124 are formed on the connecting ears 1214. Because the pivot holes 124 on both sides of the locking rod 121 reduce the structural strength of the locking rod 121, this embodiment uses reinforcing ribs 1215 to strengthen the structural strength at the rotation point. One end of the reinforcing rib 1215 is connected to one side of the locking rod 121, and the other end is connected to the other side of the locking rod 121. The reinforcing rib 1215 can be arranged parallel to the axis of the pivot hole 124, or it can be arranged intersecting the projection of the axis of the pivot hole 124, as long as it does not affect the rotation of the locking rod 121. There can be one or more reinforcing ribs 1215. When multiple reinforcing ribs 1215 are parallel to the axis of the pivot hole 124, the multiple reinforcing ribs 1215 are distributed around the pivot hole 124.

[0049] In a preferred embodiment, there are two reinforcing ribs 1215, distributed on both sides of the pivot hole 124, that is, on both sides of the pivot 123 or the cylindrical protrusion within the pivot hole 124. This embodiment provides two reinforcing ribs 1215, which reduces manufacturing difficulty and improves structural strength. Preferably, the two reinforcing ribs 1215 are symmetrically arranged about the pivot 123 or the cylindrical protrusion; for example, one of the two reinforcing ribs 1215 is located on the front side of the pivot 123 or the cylindrical protrusion, and the other is located on the rear side of the pivot 123 or the cylindrical protrusion.

[0050] In some alternative embodiments, such as Figure 9 As shown, a support 113 is provided inside the housing 11. The top of the support 113 has an assembly groove 1131. The contact switch 13 is snapped into the assembly groove 1131, and the contact switch 13 can be interference-fitted with the support 113. The top of the assembly groove 1131 is open, and the contacts of the contact switch protrude outwards from the opening of the assembly groove 1131. The support 113 can be integrally formed with the housing 11 or snapped into place; this application does not impose any special limitations.

[0051] In some alternative embodiments, such as Figure 9As shown, a support 113 is provided inside the housing 11. An assembly groove 1131 is formed on the top of the support 113. The contact switch 13 is disposed within the assembly groove 1131. A gap may be left between the contact switch 13 and the groove wall of the assembly groove 1131 to prevent the support 113 from squeezing or damaging the contact switch 13. Positioning grooves 1132 are formed on both sides of the assembly groove 1131 on the support 113. Positioning posts 131 that match the positioning grooves 1132 are provided on both sides of the contact switch 13. The positioning posts 131 engage with the positioning grooves 1132. The engagement between the contact switch 13 and the support 113 is achieved by setting the positioning posts 131 and the positioning grooves 1132, preventing squeezing of the contact switch 13. The positioning posts 131 on both sides of the contact switch 13 can be symmetrically arranged or staggered. One or more positioning posts 131 can be provided on each side of the contact switch 13.

[0052] Optionally, the positioning post 131 can be a circular post, and the positioning groove 1132 can be a semi-circular groove. The groove opening of the positioning groove 1132 plays a limiting role for the positioning post 131, thereby improving the assembly stability.

[0053] In some optional embodiments, the elastic element 122 is a spring, a sheet spring, a torsion spring, a rubber component, or a silicone component. When the elastic element 122 is a torsion spring, the torsion spring can be sleeved on the rotating shaft 123 or the cylindrical protrusion, with one torsion arm of the torsion spring abutting against the locking rod 121 and the other torsion arm abutting against the housing 11 below the rotating shaft 123 or the cylindrical protrusion. When the elastic element 122 is a spring, a sheet spring, a rubber component, or a silicone component, one end of the elastic element 122 abuts against the bottom of the locking rod 121, and the other end of the elastic element 122 abuts against the inner bottom wall of the housing 11.

[0054] Optionally, such as Figure 8 and Figure 9 As shown, the bottom of the locking rod 121 is provided with a first positioning member 1216, and the inside of the housing 11 is provided with a second positioning member 114. The first positioning member 1216 and the second positioning member 114 are used to cooperate in positioning and fixing the elastic member 122. When the elastic member 122 is a torsion spring, the first positioning member 1216 and the second positioning member 114 can be a slot, and the torsion arm of the torsion spring is engaged in the slot. When the elastic member 122 is a spring, the first positioning member 1216 and the second positioning member 114 can be a positioning protrusion, and the end of the spring is sleeved on the positioning protrusion. When the elastic member 122 is a spring sheet, the first positioning member 1216 and the second positioning member 114 can be a slot, and the end of the spring sheet is inserted into the slot. When the elastic member 122 is a rubber or silicone part, the first positioning member 1216 and the second positioning member 114 can be a slot or a protrusion, and the end of the elastic member 122 is engaged with the positioning member.

[0055] In some alternative embodiments, such as Figure 8 and Figure 9As shown, the bottom of the locking rod 121 is provided with a first positioning member 1216, which is a cylindrical or cross-shaped positioning protrusion. The elastic member 122 is sleeved on the first positioning member 1216 to realize the positioning of the elastic member 122. The housing 11 may also have a groove for engaging the elastic member 122, and the housing 11 may also have a positioning protrusion for sleeved on the elastic member 122 to realize the positioning of the bottom end of the elastic member 122.

[0056] In some optional embodiments, a second positioning member 114 is provided inside the housing 11. The second positioning member 114 is a cylindrical or cross-shaped positioning protrusion. The elastic member 122 is sleeved on the second positioning member 114 to achieve positioning of the elastic member 122. The bottom of the locking rod 121 may also have a groove for engaging the elastic member 122, and the bottom of the locking rod 121 may also have a positioning protrusion for sleeved on the elastic member 122 to achieve positioning of the top of the elastic member 122.

[0057] In a preferred embodiment, the bottom of the locking rod 121 is provided with a first positioning member 1216, which is a cylindrical or cross-shaped positioning protrusion. The housing 11 is provided with a second positioning member 114, which is a cylindrical or cross-shaped positioning protrusion. The elastic member 122 is sleeved on the first positioning member 1216 and the second positioning member 114 to achieve stable positioning of the elastic member 122.

[0058] Preferably, both the first positioning member 1216 and the second positioning member 114 are cross-shaped positioning protrusions, which are firmly connected to the spring. In particular, the cross-shaped positioning protrusion of the first positioning member 1216 prevents the spring from detaching from it. More preferably, the bottom of the cross-shaped positioning protrusion has a chamfer to prevent excessive glue injection during molding, which could lead to shrinkage; the center of the cross-shaped positioning protrusion can be hollowed out to further prevent excessive glue injection during molding, which could lead to shrinkage. When the positioning member is a cylindrical positioning protrusion, the center of the positioning member can be hollowed out to prevent excessive glue injection during molding, which could lead to shrinkage.

[0059] In some alternative embodiments, such as Figure 7 As shown, the top of the unlocking part 1212 is provided with a pressing position 12121. The pressing position 12121 is an arc-shaped concave surface, which matches the shape of the user's fingertip, improving the user's pressing comfort.

[0060] The press position 12121 can also be an arc-shaped protrusion, serving as a clear indicator to guide the user to accurately locate the press position. The press position 12121 can also be equipped with anti-slip protrusions or anti-slip textures.

[0061] Optionally, an indicator mark may be provided on the top surface of the locking lever 121 near the pressing position 12121 to indicate the position and pressing direction of the pressing position 12121. The indicator mark may be an arrow or text, such as the text mark "PUSH".

[0062] Optionally, such as Figure 7 As shown, an arc-shaped recess 115 is provided on the housing 11 adjacent to the pressing position 12121, and the arc-shaped recess 115 is located on the rear side of the pressing position 12121. When the user presses the pressing position 12121, the finger will also extend to the housing 11 on the rear side of the pressing position 12121. The arc-shaped recess 115 improves the user's comfort and ensures that the unlocking part 1212 is pressed in place for smooth unlocking.

[0063] In some alternative embodiments, such as Figure 7 and Figure 8 As shown, the gun head 1 is equipped with a terminal bracket 14, which is located in the first accommodating cavity 111 of the housing 11. The terminal bracket 14 has multiple through holes 141, which pass through the terminal bracket 14 from front to back, without affecting the electrical connection between the terminal and the charging pile and the cable 2. Figure 3 As shown, the first signal terminal 101, the first power terminal 102, and the first ground terminal 103 are disposed in different through holes 141 of the plurality of through holes 141, that is, one terminal is disposed in each through hole 141. The terminal bracket 14 ensures the stability of the terminal fixed in the housing 11 and insulates and isolates the terminal from other structures.

[0064] The terminal bracket 14 can be fixedly connected to the housing 11, for example, by screwing or snap-fitting. Specifically, in the snap-fitting case, one of the terminal bracket 14 and the housing 11 can be provided with a protrusion, and the other can be provided with a groove that mates with the protrusion. The fixed connection between the terminal bracket 14 and the housing 11 is achieved through the snap-fitting of the protrusion and the groove. The number of protrusions and grooves can be set according to actual needs. The protrusions or grooves on the terminal bracket 14 can be provided on the front face or side of the terminal bracket 14.

[0065] In some alternative embodiments, such as Figure 6 and Figure 7 As shown, the gun head 1 is also equipped with a temperature sensor 15 and a first controller. The temperature sensor 15 is electrically connected to the first controller. The temperature sensor 15 is used to detect the temperature of the first power terminal 102 and transmit the detected temperature to the first controller. The first controller has a preset power-off temperature threshold. When the temperature of the first power terminal 102 exceeds the threshold, the first controller controls the power-off to avoid the extreme situation of charging meltdown and provide safety protection for users when charging with a charging cable.

[0066] The temperature sensor 15 can be a contact sensor or a non-contact sensor. In this embodiment, the temperature sensor 15 can be a thermistor.

[0067] Optionally, the temperature sensor 15 is disposed in another through hole 141 adjacent to the first power terminal 102 among the plurality of through holes 141, such that one end of the temperature sensor 15 is in contact with or close to the first power terminal 102, and the other end can be electrically connected to the first controller through a signal line, thereby improving the accuracy of temperature detection, and reducing the volume of the housing 11 while fixing and protecting the temperature sensor 15.

[0068] The contact switch 13 can be electrically connected to the first controller. After the contact switch 13 is triggered, the first controller receives the signal and controls the charging cable to disconnect from the power.

[0069] In some alternative embodiments, such as Figures 6-8 As shown, the gun head 1 also contains a first circuit board 16 and a protective shell 17. The first circuit board 16 is electrically connected to the first signal terminal 101 and the signal cable 201, respectively. The first circuit board 16 is used to control the on / off state of the signal. The first controller is integrated on the first circuit board 16. The protective shell 17 has a second accommodating cavity 170, and the first circuit board 16 is disposed in the second accommodating cavity 170. The protective shell 17 protects the components on the first circuit board 16 to prevent external forces from damaging the first circuit board 16, especially protecting the components on both sides of the first circuit board 16. The first circuit board 16 can be a PCB board or a PCBA board.

[0070] Optionally, such as Figure 6 As shown, in one embodiment, the protective shell 17 has an opening at the top; in another embodiment, as shown... Figure 7 As shown, the protective shell 17 has an opening on its side, which communicates with the second accommodating cavity 170, so that the first circuit board 16 can be placed in the second accommodating cavity 170 through the opening. The first circuit board 16 is spaced apart from the upper shell and the lower shell of the protective shell 17, and the first circuit board 16 does not protrude outward from the opening, so that the components on both sides of the first circuit board 16 do not come into contact with other devices, thus avoiding damage to the components on the first circuit board 16 by other devices.

[0071] Optionally, the first circuit board 16 is encased in a seal (not shown in the figure), which is disposed within the second accommodating cavity 170 of the protective housing 17. The seal provides sealing protection for the first circuit board 16, but does not affect the electrical connection between the components on the first circuit board 16 and the first signal terminal 101, the contact switch 13, and the temperature sensor 15. The seal can be made of silicone or rubber, which is elastic and provides a good sealing effect.

[0072] When the top of the protective shell 17 has an opening, a support post (not shown in the figure) is provided on the inner bottom surface of the protective shell 17 to support the first circuit board 16. The support post supports the bottom of the first circuit board 16 and does not contact the components of the first circuit board 16. The support post only contacts the substrate of the first circuit board 16, so that the first circuit board 16 and the inner bottom surface of the protective shell 17 are kept at a distance. When there is one support post, the support post can support the center of the first circuit board 16. In order to improve the support strength and support stability, multiple support posts are provided. Multiple support posts can be arranged in a row or in an array or ring according to the shape of the first circuit board 16.

[0073] To enhance the structural strength of the first circuit board 16, Figure 6 Based on the illustrated embodiments, as Figure 10 As shown, the inner or outer bottom surface of the protective shell 17 may also be provided with reinforcing ribs 172, which may be in the shape of a cross, a grid, a star, or a ring.

[0074] like Figure 10 As shown, anti-misalignment ribs 173 can be provided on the front or rear outer wall of the protective shell 17 to ensure the correct assembly orientation of the protective shell 17. The number of anti-misalignment ribs 173 can be set as needed; in this embodiment, two anti-misalignment ribs 173 are provided.

[0075] exist Figure 6 and Figure 10 Based on the illustrated embodiment, the sealant can be cured and molded using sealant, such as... Figure 6 As shown, one or more injection channels 171 can be provided on the inner sidewall of the protective shell 17. The injection channels 171 extend to the inner bottom surface of the protective shell 17. Preferably, multiple injection channels 171 are provided and are symmetrically arranged about the centerline of the protective shell 17. The injection channels 171 are used to inject sealant into the lower part of the first circuit board 16, so that the injected sealant flows fully and makes full contact with the first circuit board 16. After the sealant cures, it protects and fixes the first circuit board 16. After the first circuit board 16 is placed in the protective shell 17 and electrically connected to the contact switch 13, the first signal terminal 101 and the temperature sensor 15, sealant is injected into the interior of the protective shell 17 from the injection channels 171. The sealant wraps the first circuit board 16. After the sealant cures, it protects and fixes the first circuit board 16 to prevent the components on the first circuit board 16 from being crushed by the great injection pressure during subsequent injection molding of other structures.

[0076] When the protective shell 17 has an opening on its side, such as Figure 7As shown, the protective shell 17 is cylindrical, with an open or closed front end. The opening is located at the rear end of the protective shell 17, ensuring that the electrical connection between the first circuit board 16 and the contact switch 13, the first signal terminal 101, and the temperature sensor 15 is not affected. The longitudinal section of the protective shell 17 can be circular, elliptical, or rectangular. Preferably, the longitudinal sections of the upper and lower shells of the protective shell 17 are arched, with the upper shell protruding upwards and the lower shell protruding downwards, enhancing the mechanical strength of the protective shell 17. In this embodiment, as... Figure 7 As shown, the inner walls on both sides of the protective shell 17 can be provided with snap-fit ​​grooves 174, and the two sides of the first circuit board 16 can be inserted into the snap-fit ​​grooves 174 to fix the first circuit board 16. The front of the first circuit board 16 maintains a distance from the inner top wall of the protective shell 17, and the back of the first circuit board 16 maintains a distance from the inner bottom surface of the protective shell 17.

[0077] In some alternative embodiments, such as Figure 8 As shown, the gun head 1 also includes a first protective sleeve 18. The front end of the first protective sleeve 18 is sealed to the rear end of the housing 11, and the rear end of the first protective sleeve 18 is sealed onto the cable 2. The first protective sleeve 18 is used to protect the components inside the housing 11 and the connection between the gun head 1 and the cable 2, and to give the gun head 1 a clean appearance.

[0078] The first protective sleeve 18 can be formed by injection molding. A sealing groove 116 can be provided at the rear end of the shell 11 to position the first protective sleeve 18 and achieve a stable connection between the first protective sleeve 18 and the shell 11.

[0079] The protective shell 17 may be entirely located within the first accommodating cavity 111 of the housing 11, or entirely located within the first protective sleeve 18, or partially located within the housing 11 and partially located within the first protective sleeve 18. The protective shell 17 may be fixedly connected to the housing 11, or fixedly connected to the terminal bracket 14, or clamped between the power cable 202 and the grounding cable 203. When the protective shell 17 is fixedly connected to the housing 11 or to the terminal bracket 14, a protrusion may be provided on one of the protective shells and a groove may be provided on the other, and the fixed connection may be achieved by the snap-fit ​​of the protrusion and the groove.

[0080] In some alternative embodiments, such as Figure 11As shown, the electrical connector 3 has a terminal baffle 32. A second power terminal 302 is located on one side of the terminal baffle 32, a second signal terminal 301 is located on the other side, and a second grounding terminal 303 can be located on either side of the terminal baffle 32. The terminal baffle 32 separates the second signal terminal 301 from the second power terminal 302, thereby separating the connection point between the second signal terminal 301 and the signal cable 201 from the connection point between the second power terminal 302 and the power cable 202. The second power terminal 302 is typically soldered to the power cable 202. The terminal baffle 32 prevents damage to other structures during soldering and increases the creepage distance of the second power terminal 302, ensuring that the withstand voltage of the second power terminal 302 meets the requirements. The terminal baffle 32 can be a flat plate, an arc-shaped plate, or a corrugated plate; this application does not specifically limit its shape. The terminal baffle 32 can be integrally formed, snap-fitted, or adhesively bonded to the base 31 of the electrical connector 3.

[0081] In some alternative embodiments, such as Figure 11 As shown, the electrical connector 3 contains a second circuit board 33. The second circuit board 33 has an electrical connection hole 331 for electrical connection with the signal cable 201 and the second signal terminal 301. The second circuit board 33 controls the on / off connection between the signal cable 201 and the second signal terminal 301. The shape of the electrical connection hole 331 matches the shape of the signal cable 201 and the second signal terminal 301 for easy connection. The electrical connection hole 331 is typically soldered to the signal cable 201 and the second signal terminal 301. The electrical connection hole 331 may be circular. The electrical connection hole 331 and the second signal terminal 301 are located on the same side of the terminal baffle 32 to prevent the signal cable 201, power cable 202, and grounding cable 203 from crossing or tangling.

[0082] The second circuit board 33 can be integrally disposed on the side of the terminal baffle 32, and the two sides of the substrate of the second circuit board 33 can also surround the two sides of the terminal baffle 32, depending on the assembly requirements.

[0083] This application also discloses a charging system, which includes a charging pile, a mobile energy storage device, and a charging cable as described in any of the above embodiments. The charging gun 1 is electrically connected to the charging pile via plug-in, and the electrical connector 3 is electrically connected to the mobile energy storage device via plug-in. The type of the electrical connector 3 matches the type of the interface of the mobile energy storage device. For example, if the interface of the mobile energy storage device is an aircraft carrier connector 4, then the electrical connector 3 is an aircraft male connector.

[0084] like Figure 12 and Figure 13As shown, the aircraft carrier head 4 includes a head body 41, a third power terminal 402, a third signal terminal 401, and a third ground terminal 403. The third power terminal 402, third signal terminal 401, and third ground terminal 403 are respectively disposed on the head body 41. The number of the third power terminal 402, the second power terminal 302, and the first power terminal 102 is the same, for example, two for each. The number of the third ground terminal 403 and the second ground terminal 303 is one each. The two third power terminals 402 and the third ground terminal 403 can be arranged in a triangular pattern and penetrate through the head body 41, with the ends extending into the head body 41 for contact with the corresponding terminals of the electrical connector 3 for electrical conduction. The number of third signal terminals 401 and the second signal terminals 301 is the same. Multiple third signal terminals 401 can be provided, and these multiple third signal terminals 401 can be arranged in rows or arrays and penetrate through the head body 41.

[0085] like Figure 12 and Figure 13 As shown, the electrical connector 3 also includes a base 31, with a second power terminal 302, a second signal terminal 301, and a second grounding terminal 303 respectively disposed on the base 31. The arrangement of the second power terminal 302 and the second grounding terminal 303 is the same as the arrangement of the third power terminal 402 and the third grounding terminal 403. For example, two second power terminals 302 and one second grounding terminal 303 are arranged in a triangle and pass through the base 31. The ends extending to one side of the base 31 are used to make one-to-one contact with the third power terminal 402 and the third grounding terminal 403 for electrical conduction, and the ends extending to the other side of the base 31 are used to make one-to-one electrical connection with the cable 2. Multiple second signal terminals 301 can be provided, and the multiple second signal terminals 301 can be arranged in a row, array, or arc and pass through the female connector base 41. When the electrical connector 3 is mated with the aircraft mother connector 4, the second signal terminals 301 and the third signal terminals 401 make one-to-one contact and thus conduct electricity.

[0086] A signal switch assembly 5 is movably disposed on the electrical connector 3, and the signal switch assembly 5 has a locked state and an unlocked state; wherein, during the mating and assembly process between the aircraft carrier head 4 and the electrical connector 3, the signal switch assembly 5 remains in the unlocked state, and the third power terminal 402 and the second power terminal 302, the third ground terminal 403 and the second ground terminal 303, and the third signal terminal 401 and the second signal terminal 301 are all in a non-electrically connected state; when the mating and assembly between the aircraft carrier head 4 and the electrical connector 3 is completed, the third signal terminal 401 and the second signal terminal 301 are in a non-electrically connected state. When terminal 301 contacts, signal switch assembly 5 switches from the unlocked state to the locked state. Third signal terminal 401 is electrically connected to second signal terminal 301. Third power terminal 402 and second power terminal 302, and third ground terminal 403 and second ground terminal 303 are electrically connected to each other, adapted to the electrical connection between third signal terminal 401 and second signal terminal 301. Signal switch assembly 5 is used to electrically connect to the second controller within electrical connector 3, so that power can be supplied to the mobile energy storage device when the second controller detects that signal switch assembly 5 is in the locked state. The second controller is integrated on the second circuit board 33, which is a PCB board or PCBA board.

[0087] In summary, implementing the technical solution of this embodiment will have the following beneficial effects: The electrical connector 3 of this solution adopts a conditional power-on concept design to avoid arcing when the electrical connector 3 is mated with the aircraft carrier head 4. Specifically, during the mating process of the electrical connector 3 and the aircraft carrier head 4, since the signal switch assembly 5 is in the unlocked state, the controller detects that the signal switch assembly 5 is not in the locked state, and therefore will not supply power to the electrical connector 3. In this way, even if there is a gap when the second signal terminal 301 and the third signal terminal 401, the second ground terminal 303 and the third signal terminal 401, and the second power terminal 302 and the third power terminal 402 are mated, there will be no current breakdown of air and arcing. Only when the electrical connector 3 and the aircraft carrier head 4 are fully mated will the second signal terminal 301 and the third signal terminal 401 be powered on. When the three signal terminals 401 are in normal contact and electrically connected (this refers to physical contact connection, not electrical conduction), and the second power terminal 302 and the third power terminal 402, as well as the second ground terminal 303 and the third ground terminal 403, are also in contact and electrically connected, and then the signal switch assembly 5 is rotated from the unlocked state to the locked state, the second controller detects and recognizes that the signal switch assembly 5 is in the locked state. Therefore, it assumes that the second signal terminal 301 and the third signal terminal 401, the second ground terminal 303 and the third ground terminal 403, and the second power terminal 302 and the third power terminal 402 are connected. Only then will power be supplied to the electrical connector 3. At this point, since there is no gap between the second power terminal 302 and the third power terminal 402, even if current flows, it will not cause arcing due to current breakdown of the air in the gap. Therefore, the electrical connector 3 of this embodiment can fundamentally eliminate the problem of arcing, ensuring user comfort and experience, eliminating potential safety hazards, and guaranteeing the service life of the electrical connector 3.

[0088] In some alternative embodiments, such as Figures 12 to 15 As shown, the signal switch assembly 5 includes a switch body 51 and a spring unit 52. The spring unit 52 is disposed within the base 31, and the switch body 51 is rotatably disposed on the base 31. Optionally, the rotation of the switch body 51 and the base 31 can be achieved manually or automatically by a drive device. For example, in this application, the rotation can be achieved by the driving force generated when the electrical connector 3 is inserted into the aircraft carrier head 4, eliminating the need for the user to operate the switch body 51 separately, thereby simplifying the structure of the electrical connector 3 and reducing manufacturing and usage costs.

[0089] Specifically, the switch body 51 is a ring-shaped body, which is sleeved on the outside of the base 31. The switch body 51 and the base 31 are coaxially arranged and can rotate clockwise or counterclockwise along their own axis.

[0090] When signal switch assembly 5 is in the unlocked state, switch body 51 is in the unlocked position, and switch body 51 is not in contact with spring contact unit 52. At this time, the second controller detects that signal switch assembly 5 is in the unlocked state and will not energize it, thus ensuring that no arcing or current breakdown occurs during the mating of electrical connector 3 and aircraft carrier head 4. When electrical connector 3 and aircraft carrier head 4 are properly mated and signal switch assembly 5 is in the locked state, switch body 51 rotates to the locked position, and switch body 51 abuts against spring contact unit 52. This puts signal switch assembly 5 in the energized state, and the controller can energize it by recognizing the energized state of signal switch assembly 5.

[0091] like Figure 15 As shown, Figure 15 As shown Figure 14 The spring unit 52 on the left side includes a bracket 521, a fixed spring 522, and a movable spring 523. The bracket 521 is mounted on the base 31. The fixed spring 522 and the movable spring 523 are respectively disposed on the bracket 521. The fixed spring 522 has a fixed contact arm 522a, and the movable spring 523 has a pressure-bearing protrusion 523a and a movable contact arm 523b. The movable contact arm 523b is aligned with the fixed contact arm 522a.

[0092] like Figure 12 As shown, the switch body 51 has a pressure-applying part 511 and a release recess 512. When the switch body 51 is in the unlocked position, the pressure-bearing protrusion 523a is located in the release recess 512, and the movable contact arm 523b and the fixed contact arm 522a are in clearance fit. The clearance fit means that the movable contact arm 523b and the fixed contact arm 522a are not in contact, and there is a gap between them. When the switch body 51 is rotated to the locked position, the pressure-applying part 511 abuts against the pressure-bearing protrusion 523a to deform the movable spring 523, so that the movable contact arm 523b and the fixed contact arm 522a make contact and conduct electricity.

[0093] When the switch body 51 is in the unlocked position (that is, when the signal switch assembly 5 is in the unlocked state), since the pressure-bearing protrusion 523a is located in the release recess 512, the movable spring 523 will not be subjected to the squeezing force applied by the switch body 51. The movable contact arm 523b can maintain a gap fit with the fixed contact arm 522a, so that the signal switch assembly 5 is not connected. The second controller will not energize the electrical connector 3, thus forming the necessary condition to prevent arcing. When the electrical connector 3 and the aircraft carrier head 4 are properly mated, the manual rotating switch body 51 is switched from the unlocked position to the locked position. The switch body 51 and the movable spring 523 rotate relative to each other. The pressure-bearing protrusion 523a moves out from the release recess 512 and abuts against the pressure part 511. This causes the movable spring 523 to deform under the squeezing force of the pressure part 511, forcing the movable contact arm 523b to move closer to the fixed spring 522 and finally make contact with the fixed contact arm 522a to conduct electricity. This puts the signal switch assembly 5 into the on state. The controller recognizes that the signal switch assembly 5 is in the on state and can normally supply power to the electrical connector 3.

[0094] Both the fixed spring 522 and the movable spring 523 are made of copper sheets to make full use of the excellent elastic deformation ability of copper.

[0095] Based on any of the above embodiments, two sets of spring contact units 52 can be provided, with the two sets of spring contact units 52 arranged alternately on the base 31. The switch body 51 is provided with two sets of pressure-applying parts 511 and release recesses 512, with the pressure-applying parts 511 and release recesses 512 corresponding to the spring contact units 52. With this arrangement, the two sets of spring contact units 52, release recesses 512 and pressure-applying parts 511 work together simultaneously, which not only further improves the reliability of the signal switch assembly 5 in switching its working state, but also allows the two sets of spring contact units 52 to form mutual backup. That is, when one set of spring contact units 52 fails due to prolonged use, the other set of spring contact units 52 can still ensure normal operation, thereby helping to extend the service life of the electrical connector 3.

[0096] like Figure 12 and Figure 13 As shown, in another embodiment, the electrical connector 3 further includes a second protective sleeve 34, which is disposed at the end of the base 31 away from the female connector base 41. The design and installation of the second protective sleeve 34 can effectively eliminate stress on the wires and prevent breakage of the core wires at the wire connection. Its material can be, but is not limited to, metal, rubber, or PVC; different materials have different strengths and are suitable for different wires. Indicator arrows, unlocking marks, and locking marks can also be provided on the outer surface of the second protective sleeve 34, enabling users to intuitively and accurately grasp the connection status of the electrical connector 3, improving operational effectiveness, and ensuring the accuracy of the movement position of the switch body 51 when rotating between the unlocked and locked positions.

[0097] like Figure 12 and Figure 13 As shown, in order to ensure that the electrical connector 3 and the aircraft carrier head 4 can be assembled and fixed without detachment after they are properly connected, in one embodiment, the female head seat 41 is provided with a first buckle 411 and the switch body 51 is provided with a second buckle 514. When the electrical connector 3 and the aircraft carrier head 4 are properly connected, the first buckle 411 and the second buckle 514 are engaged and fixed.

[0098] Specifically, such as Figure 11 and Figure 16 As shown, the base 31 has a first segment 313, a second segment 314, and a third segment 315 arranged sequentially in a direction away from the cable 2. The diameter of the second segment 314 is larger than the diameters of the first segment 313 and the third segment 315, so that the end face of the second segment 314 near the first segment 313 serves as a stepped surface. The switch body 51 is fitted onto the first segment 313, as shown. Figure 12 As shown, the second segment 314 has an arc-shaped hole 317 that extends through the second segment 314 along its axial direction. The second latch 514 passes through the arc-shaped hole 317 and can rotate along the arc-shaped hole 317. The end of the second latch 514 near the aircraft carrier head 4 extends outside the arc-shaped hole 317 and is located at the third segment 315, without affecting the engagement with the first latch 411. After the first latch 411 and the second latch 514 are engaged, the switch body 51 can press and fix the seat body 31 and the female head seat body 41 together by forming a limiting and pressing action with the end face of the second segment 314 near the first segment 313.

[0099] like Figure 11 As shown, the first segment 313 of the base body 31 is also provided with a limiting protrusion 316, which is used to axially limit the switch body 51 to prevent the switch body 51 from detaching from the first segment 313, so as to ensure that the first buckle 411 and the second buckle 514 can be accurately engaged.

[0100] Two first latches 411 can be provided and arranged at opposite positions on the outer circumference of the female connector body 41. Correspondingly, two second latches 514 are also provided and are arranged one-to-one with the positions of the first latches 411 along the insertion direction. In this way, by simultaneously engaging the two sets of first latches 411 and second latches 514, the assembly strength and connection firmness of the electrical connector 3 and the aircraft carrier head 4 can be further improved. In other optional embodiments, the number of first latches 411 and second latches 514 can also be other; or the engaging structure of the first latches 411 and second latches 514 can also be replaced by magnetic connection, adhesive, etc., and can be flexibly selected according to actual needs.

[0101] Furthermore, since the switch body 51 is rotatably mounted on the base 31, the initial position of the switch body 51 will be random. And to avoid arcing caused by accidental activation of the signal switch assembly 5 during the insertion process, in one embodiment, such as... Figure 12 and Figure 13 As shown, the first latch 411 has a first inclined surface 411a, and the second latch 514 has a second inclined surface 514a. During the assembly process of the electrical connector 3 and the aircraft carrier head 4, the first inclined surface 411a and the second inclined surface 514a abut against each other and can slide relative to each other to push the switch body 51 to rotate and remain in the unlocked position. That is to say, regardless of whether the first latch 411 and the second latch 514 are aligned at the initial alignment, the circumferential force generated by the abutment of the first inclined surface where the first inclined surface 411a is located and the second inclined surface where the second inclined surface 514a is located during the assembly can push the switch body 51 to automatically rotate to the unlocked position, so as to avoid the switch body 51 from squeezing and deforming the spring unit 52, causing the signal switch assembly 5 to be falsely connected, and thus causing the controller to misidentify and falsely power on the electrical connector 3.

[0102] As shown in the figure Figure 12 As shown, in one embodiment, the switch body 51 is provided with a retaining rib 513, and the outer peripheral wall of the base 31 is provided with a first mating rib 311 and a second mating rib 312 spaced apart along the rotation direction of the switch body 51. When the switch body 51 rotates from the unlocked position to the locked position, the retaining rib 513 engages with the first mating rib 311; when the switch body 51 rotates from the locked position to the unlocked position, the retaining rib 513 engages with the second mating rib 312. On the one hand, by engaging the retaining rib 513 with the first mating rib 311, the stability of the switch body 51 in the locked position can be improved. Similarly, by engaging the retaining rib 513 with the second mating rib 312, the stability of the switch body 51 in the unlocked position can also be improved. On the other hand, when the retaining rib 513 engages with the first mating rib 311 or the second mating rib 312, a clicking sound will be generated due to friction to serve as a prompt, thereby providing the user with a better operating experience.

[0103] In another embodiment, the switch body 51 is provided with a retaining rib 513, such as Figure 16As shown, an elastic reset member 35 is provided on the outer peripheral wall of the base 31 along the rotation direction of the switch body 51. When the switch body 51 rotates from the unlocked position to the locked position, the elastic reset member 35 is compressed. When unlocking, the user rotates the switch body 51, causing the first latch 411 and the second latch 514 to disengage. The user then pulls the electrical connector 3 away from the aircraft carrier head 4, and the restoring force of the elastic reset member 35 causes the switch body 51 to return to its initial state. On the one hand, the elastic force of the elastic reset member 35 improves the engagement stability of the first latch 411 and the second latch 514, thereby improving the stability of the switch body 51 in the locked position. On the other hand, when unlocking, the restoring force of the elastic reset member 35 causes the switch body 51 to automatically return to the unlocked position, thus providing the user with a better operating experience.

[0104] The elastic reset member 35 can be a spring, a sheet, or an elastic post. One end of it is fixedly connected to the base 31, and the other end abuts against the retaining rib 513 of the switch body 51. A limiting groove can be provided on the base 31. The elastic reset member 35 is placed in the limiting groove along the length of the limiting groove to prevent the elastic reset member 35 from shifting when compressed.

[0105] When using the charging cable of this application to charge a mobile energy storage device, the front end of the charging head 1 is locked to the charging pile, making it difficult to pull out. When the electrical connector 3 is plugged into the aircraft carrier head, the signal switch assembly 5 prevents arcing, achieving stable charging while reducing safety hazards. After charging is complete, before pulling out the charging head 1, the user must first press the unlocking part 1212 to trigger the contact switch 13, which transmits a power-off signal to disconnect the charging cable. Pressing the unlocking part 1212 again causes the locking part 1211 to rotate to the unlocked position, disengaging the locking part 1211 from the locking groove of the charging pile, allowing the charging head 1 to be pulled out of the charging pile, thus preventing hot-plugging during charging.

[0106] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0107] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0108] In the description of this specification, the references to terms such as "this embodiment," "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any at least one embodiment or example. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0109] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0110] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and simple improvements made to the substantive content of this application should be included within the protection scope of this application.

Claims

1. A charging cable, characterized in that, Includes the gun head, cables, and electrical connectors. The charging head is used for electrical connection with the charging pile, and the electrical connector is used for electrical connection with the mobile energy storage device. One end of the cable is connected to the gun head, and the other end of the cable is connected to the electrical connector. The gun head is provided with a first signal terminal, a first power terminal and a first ground terminal. The electrical connector is provided with a second signal terminal, a second power terminal and a second ground terminal. The cable includes a signal cable, a power cable and a ground cable. One end of the signal cable is electrically connected to the first signal terminal and the other end of the signal cable is electrically connected to the second signal terminal. One end of the power cable is electrically connected to the first power terminal and the other end of the power cable is electrically connected to the second power terminal. One end of the ground cable is electrically connected to the first ground terminal and the other end of the ground cable is electrically connected to the second ground terminal.

2. The charging cable according to claim 1, characterized in that, The gun head is equipped with a locking device, which is used to cooperate with the charging pile to lock the gun head to the charging pile.

3. The charging cable according to claim 2, characterized in that, The locking device is a locking groove provided on the surface of the gun head.

4. The charging cable according to claim 2, characterized in that, The gun head includes a housing. The housing has a first accommodating cavity inside, and the first signal terminal, the first power terminal, and the first ground terminal are disposed within the first accommodating cavity of the housing. The locking device includes a locking rod and an elastic element. The end of the locking rod near the charging pile is provided with a locking part for locking with the charging pile. The top of the end of the locking rod away from the charging pile is provided with an unlocking part, which protrudes outward from the housing. The locking rod is rotatably connected to the housing and can rotate relative to the housing. During rotation, the locking part includes a locked position and an unlocked position. Under the action of an external force, the unlocking part moves downward to drive the locking rod to rotate relative to the housing, so that the locking part moves from the locked position to the unlocked position. The elastic element is disposed in the first accommodating cavity of the housing and located below the locking rod. The elastic element is compressed during the process of the locking part moving from the locked position to the unlocked position, and after the external force is removed, the locking part returns from the unlocked position to the locked position.

5. The charging cable according to claim 4, characterized in that, The gun head also includes a contact switch, which is disposed in the first accommodating cavity of the housing and located below the locking rod. The contact of the contact switch is pressed by the locking rod during the movement of the locking part from the locking position to the unlocking position, so as to disconnect the power to the charging cable.

6. The charging cable according to claim 4, characterized in that, The bottom of the locking rod is provided with a first positioning member, and the elastic member is sleeved on the first positioning member. The first positioning member is a cylindrical or cross-shaped positioning protrusion. And / or, the housing is provided with a second positioning member inside, and the elastic member is sleeved on the second positioning member, the second positioning member being a cylindrical or cross-shaped positioning protrusion.

7. The charging cable according to claim 1, characterized in that, The gun head is provided with a terminal bracket, and the terminal bracket has multiple through holes. The first signal terminal, the first power terminal and the first ground terminal are disposed in different through holes of the multiple through holes.

8. The charging cable according to claim 7, characterized in that, The gun head is equipped with a temperature sensor and a first controller. The temperature sensor is electrically connected to the first controller. The temperature sensor is used to detect the temperature of the first power terminal and transmit the detected temperature to the first controller.

9. The charging cable according to claim 8, characterized in that, The temperature sensor is disposed in another through hole adjacent to the first power terminal among the plurality of through holes.

10. The charging cable according to claim 1, characterized in that, The gun head is also provided with a first circuit board and a protective shell. The first circuit board is electrically connected to the first signal terminal and the signal cable respectively. The protective shell is provided with a second accommodating cavity, and the first circuit board is disposed in the second accommodating cavity.

11. The charging cable according to claim 10, characterized in that, The protective shell has an opening on its top or side, which communicates with the second accommodating cavity. The circuit board is spaced apart from the upper and lower shells of the protective shell, and the circuit board does not protrude outward from the opening.

12. The charging cable according to claim 10 or 11, characterized in that, The circuit board is wrapped with a sealing element, which is disposed within the second accommodating cavity of the protective shell.

13. The charging cable according to claim 1, characterized in that, The electrical connector is provided with a terminal baffle, the second power terminal is provided on one side of the terminal baffle, and the second signal terminal is provided on the other side of the terminal baffle.

14. The charging cable according to claim 13, characterized in that, The electrical connector contains a second circuit board, which has an electrical connection hole for electrical connection with the signal cable and the second signal terminal. The electrical connection hole and the second signal terminal are located on the same side of the terminal baffle.

15. A charging system, characterized in that, The charging system includes a charging pile, a mobile energy storage device, and a charging cable as described in any one of claims 1-14. The charging gun head is plugged into the charging pile to achieve electrical connection, and the electrical connector is plugged into the mobile energy storage device to achieve electrical connection.

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