A high-power liquid-cooled charging gun for new energy vehicles

Abstract

This invention relates to the field of liquid-cooled charging gun technology, specifically a high-power liquid-cooled charging gun for new energy vehicles, comprising: a charging gun sleeve with a handle on its surface; a charging assembly disposed within the charging gun sleeve, the charging assembly including a liquid-cooled charging cable, a coolant return pipe, a terminal block, and a charging head; and an assist assembly disposed on the charging gun sleeve and the handle. When moved by a traction rope, the traction rope, through a reversing block, causes a drive column to extend from the inner wall of the receiving slot. This, in turn, causes the drive column, through a drive ear, to move an assist ring towards one end of the slot, allowing the charging head to be easily pulled out from the inner wall of the slot. Compared to existing technologies that use a direct pulling method to remove the charging gun, this invention requires only a small force to easily overcome the friction and structural resistance between the charging gun and the vehicle's charging interface, effectively solving the problem of difficult removal of existing charging guns.

Description

Technical Field

[0001] This invention relates to the field of liquid-cooled charging gun technology, specifically a high-power liquid-cooled charging gun for new energy vehicles. Background Technology

[0002] With the popularization of new energy electric vehicles, the development of fast charging technology is becoming increasingly important. As a crucial component, charging guns are already available in a number of mature products on the market. To improve charging speed, shorten charging time, and enhance user experience, the charging current and power of charging guns will inevitably increase.

[0003] For example, CN114103688B discloses a liquid cooling system and charging gun for a charging gun. In this system, the head cooling assembly includes a head housing, a first head sealing assembly, a second head sealing assembly, and a third head sealing assembly. The head housing has a terminal interface and a head inlet. Terminals pass through the terminal interface, and the terminals' wiring ends are housed within the head housing. The head inlet allows a cable to extend into the head housing and connect to the terminal's wiring end. The first head sealing assembly seals the connection between the terminal's wiring end and the cable. The second head sealing assembly seals the terminal interface, and the third head sealing assembly seals the head inlet. The outlet end of the coolant inlet pipe is connected to the inlet end of the coolant outlet assembly within the head housing. This configuration reduces the temperature at the cable and terminal connection, improves charging efficiency, and reduces charging risks.

[0004] A liquid-cooled charging gun, as disclosed in announcement number CN220577067U, includes a handle, a charging head, a cable assembly, a cooling component, and a sealing component. One end of the charging head is connected to the handle, and the other end is adapted to fit a device to be charged. The cable assembly passes sequentially through the handle and the inside of the charging head, with the charging terminals of the cable assembly protruding from the charging head. The cooling component is located inside the charging head and has a cavity. The cooling component has an inlet and an outlet end communicating with the cavity, which are adapted to be connected to an external liquid supply device to inject insulating coolant into the cavity. The cable assembly includes several charging cables, which are located within the cavity and in contact with the insulating coolant. The sealing component is located between the charging cables and the cavity. In this liquid-cooled charging gun, the insulating coolant circulates within the cavity, thereby dissipating heat from the cooling component and the charging head as a whole, and also dissipating heat from the charging cables located within the cavity.

[0005] However, in actual use, the charging gun and the car charging interface are tightly connected during the charging process to ensure good electrical contact and stable charging performance, which results in a large frictional force between the two.

[0006] When a charging gun is exposed to the outside for a long time, it may accumulate dust, dirt or water stains. Especially in harsh environments, these contaminants will adhere to the surface of the charging gun, increase frictional resistance, and even cause metal parts to rust and stick together.

[0007] Under high or low temperature conditions, the material expands or contracts, causing changes in the gap between the charging gun and the slot, which in turn increases the friction between the charging gun and the slot.

[0008] If the charging gun cable is excessively stretched or twisted during the charging process due to the vehicle's parking angle or site limitations, it may generate additional stress when pulled out. The cable tension may cause the gun head to misalign and get stuck with the charging port, or improper operation angle may easily cause jamming.

[0009] All of the above issues can make it difficult for users to pull the charging gun out of the slot.

[0010] Additionally, after high-temperature use, when the charging gun is placed on the charging station's gun holder, the charging cable remains soft due to the high temperature. After cooling, the charging cable hardens, and the internal stress generated by the fixed shape after cooling may cause rapid twisting or swinging when released. If the user does not pay attention and pulls out the charging gun directly, the charging gun may twist rapidly, causing injury to the user. Summary of the Invention

[0011] The purpose of this invention is to provide a high-power liquid-cooled charging gun for new energy vehicles, in order to solve the problems of difficulty in pulling the charging gun out of the slot and the rapid twisting of the charging gun during release due to internal stress generated after cooling, which causes injury to the user.

[0012] To achieve the above objectives, the present invention provides the following technical solution: a high-power liquid-cooled charging gun for new energy vehicles, comprising:

[0013] A charging gun shroud, the surface of which is provided with a handle;

[0014] A charging assembly disposed within a charging gun housing, the charging assembly comprising a liquid-cooled charging cable, a coolant return pipe, a terminal block, and a charging head;

[0015] An assistive component is provided on the charging gun shroud and handle. The assistive component includes a cable harness cover fixedly connected to the middle of the charging gun shroud and handle. A storage rack is fixedly connected to the inner wall of the cable harness cover. Storage slots are respectively opened at the upper and lower ends of the middle of the storage rack. A drive column is movably connected to the inner wall of the storage slot. A traction slot is opened on the side wall of the two drive columns at corresponding positions. A traction rope is fixedly embedded in the middle of the drive column at the corresponding position of the traction slot. The surface of the traction rope is movably connected to the inner wall of the traction slot. A movable slot is opened in the middle of the storage rack. The surface of the movable slot is connected to the interior of the storage slot. A reversing block is fixedly connected to the inner wall of the movable slot so that one end of the traction rope is wrapped around the surface of the reversing block and passes through the cable harness cover through the movable slot. So that when the drive traction rope moves left and right, the traction rope, in conjunction with the reversing block and the traction slot, drives the drive column to move left and right on the inner wall of the storage slot.

[0016] One end of the drive column is fixedly provided with an assist ring, and the assist ring is movably sleeved on the surface of the charging head so that the assist ring moves along the surface of the charging head and pushes the charging head out of the slot.

[0017] Preferably, a drive ear is fixedly connected to the end of the drive column away from the storage rack, and an assist ring is fixedly connected to one end of the drive ear. A partition plate for separating the top and bottom of the traction rope is fixedly connected to the inner wall of the cable harness cover.

[0018] Preferably, a protective cover is fixedly connected to the top of the inner wall of the handle corresponding to the cable harness cover position. A reversing rod is fixedly connected to the end of the protective cover away from the cable harness cover position, and the traction rope is movably wrapped around the surface of the reversing rod so that the traction rope is transmitted on the reversing rod and the reversing block. The reversing block is movably connected to the inner wall of the drive column.

[0019] Preferably, a fixing block is fixedly connected to the surface of the reversing rod, a traction block is fixedly connected to one end of the fixing block, a guide rod is movably sleeved in the middle of the traction block, and the guide rod is fixedly connected to the inner wall of the handle, a hinge arm is hinged to the surface of the traction block, and a handle is hinged to the end of the hinge arm away from the traction block, the top of the handle is hinged to the bottom of the protective cover, the middle of the bottom of the protective cover is an open structure, and the traction block is movably connected to the inner wall of the opening of the protective cover so as not to affect the movement of the hinge arm and the traction block, and a second return spring is fixedly connected to the end of the traction block away from the hinge arm, and the second return spring is fixedly connected to the surface of the guide rod.

[0020] Preferably, the liquid-cooled charging cable has a coolant injection pipe inside, and the coolant return pipe is spirally wound to improve heat dissipation. The liquid-cooled charging cable and the coolant return pipe are both fixedly connected to one end of the terminal block, and the terminal block has a cooling cavity so that the coolant injected from one end of the liquid-cooled charging cable can cool the terminal block and then return from the coolant return pipe. The charging head is fixedly connected to the end of the terminal block away from the liquid-cooled charging cable.

[0021] Preferably, the device further includes an internal stress relief component for relieving internal stress in the charging assembly. The internal stress relief component includes a rotating ring fixedly connected to the surface of the charging head, a fixed ring rotatably connected to the surface of the rotating ring, and the fixed ring fixedly connected to one end of the charging gun sleeve. The terminal block is rotatably connected to the inner wall of the fixed ring. A first limiting ring is fixedly connected to one end of the surface of the terminal block, and a second limiting ring is fixedly connected to the inner wall of the charging gun sleeve corresponding to the position of the first limiting ring, so that the second limiting ring cooperates with the first limiting ring and the fixed ring cooperates with the rotating ring to limit the horizontal position of the terminal block and the charging head.

[0022] Preferably, a first protective ring is fixedly connected to the end of the terminal block away from the charging head, a braided ring is fixedly connected to the end of the first protective ring away from the terminal block, and a second protective ring is fixedly connected to the end of the braided ring away from the first protective ring. The liquid-cooled charging cable and the coolant return pipe are respectively located inside the first protective ring, the braided ring, and the second protective ring, so that the first protective ring, the braided ring, and the second protective ring respectively wrap the liquid-cooled charging cable and the coolant return pipe. A third limiting ring is fixedly connected to the inner wall of the charging gun sleeve corresponding to both ends of the second protective ring, so that the two third limiting rings limit the horizontal position of the second protective ring. A cable wrapping film is fixedly connected to the end of the second protective ring away from the braided ring, and the cable wrapping film is used to wrap and protect the liquid-cooled charging cable and the coolant return pipe.

[0023] Preferably, it further includes a locking component for locking and unlocking the connection between the charging head and the slot. The locking component includes a mounting groove formed on the top of the charging gun sleeve and the handle. A hook strip is rotatably connected to the middle of the inner wall of the mounting groove. An electronic lock is fixedly connected to the inner wall of the mounting groove at the end away from the charging head, and the electronic lock is used to restrict the rotation of the hook strip. A contact ring is fixedly connected to the surface of the first protective ring, and the contact ring is electrically connected to the pins on the terminal block. A contact point is fixedly connected to the inner wall of the charging gun sleeve at the position corresponding to the contact ring, and the contact point is electrically connected to the contact ring. The contact point is electrically connected to the electronic lock through a wire.

[0024] Preferably, the top of the fixed ring is provided with a locking hole, the inner wall of the locking hole is movably connected with a positioning post, the side wall of the rotating ring is provided with a positioning hole, and the positioning post is inserted into the inner wall of the positioning hole when in the charging state. A first return spring is fixedly connected to the surface of the positioning post, and the first return spring is fixedly connected to the inner wall of the locking hole.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] 1. When the present invention moves by the traction rope, the traction rope will cause the drive column to extend out from the inner wall of the storage slot through the reversing block. Then, the drive column will drive the assist ring to move towards one end of the slot through the drive ear, so that the charging head can be easily pulled out from the inner wall of the slot. Compared with the existing technology that uses a direct pulling method to pull out the charging gun, the present invention only needs to apply a small force to easily overcome the friction and structural resistance between the charging gun and the car charging interface, effectively solving the problem of the difficulty in pulling out the existing charging gun.

[0027] 2. This invention also features an automatic rotating hook strip when not in use. Since the charging gun is inserted into the charging station's gun holder when not in use, when external factors cause the cable to generate significant torque, the liquid-cooled charging cable and coolant return pipe, which are wrapped in the cable sheath, generate torque themselves. This torque causes the liquid-cooled charging cable and coolant return pipe to drive the second protective ring, braided ring, first protective ring, and terminal block to rotate on the inner wall of the charging gun sleeve, thereby causing the charging head to rotate on the inner wall of the charging gun sleeve. In other words, the liquid-cooled charging cable and the charging gun sleeve are in a free-rotating state at this time. This is used to eliminate the situation where external factors cause increased torque, and to prevent the charging gun from twisting rapidly when being removed, which could cause injury to the user. Attached Figure Description

[0028] Figure 1 This is a formal structural diagram of a high-power liquid-cooled charging gun for new energy vehicles according to the present invention;

[0029] Figure 2 This is a schematic diagram of the overall structure of a high-power liquid-cooled charging gun for new energy vehicles according to the present invention;

[0030] Figure 3 This is a half-sectional view of the structure of a high-power liquid-cooled charging gun harness cover for new energy vehicles according to the present invention.

[0031] Figure 4 This is a front sectional view of the structure of a high-power liquid-cooled charging gun harness cover for new energy vehicles according to the present invention.

[0032] Figure 5 This is a partial cross-sectional view of a high-power liquid-cooled charging gun storage rack structure for new energy vehicles according to the present invention.

[0033] Figure 6 This is a cross-sectional view of the handle structure of a high-power liquid-cooled charging gun for new energy vehicles according to the present invention.

[0034] Figure 7 This is an exploded view of the rotating ring and fixed ring structure of a high-power liquid-cooled charging gun for new energy vehicles according to the present invention.

[0035] Figure 8 This is an exploded view of the overall structure of a high-power liquid-cooled charging gun for new energy vehicles according to the present invention.

[0036] Figure 9 This is a front sectional view of the charging component structure of a high-power liquid-cooled charging gun for new energy vehicles according to the present invention.

[0037] Figure 10 This is a partial exploded view of the internal stress relief component structure of a high-power liquid-cooled charging gun for new energy vehicles according to the present invention.

[0038] In the picture: 1. Charging gun cover; 2. Handle;

[0039] 301. Liquid-cooled charging cable; 302. Coolant return pipe; 303. Wiring terminal; 304. Charging head;

[0040] 401. Rotating ring; 402. Fixed ring; 403. First limiting ring; 404. Second limiting ring; 405. First protective ring; 406. Braided ring; 407. Second protective ring; 408. Third limiting ring; 409. Cable wrapping film;

[0041] 501. Mounting slot; 502. Hook strip; 503. Electronic lock; 504. Electrical ring; 505. Electrical contact; 506. Locking hole; 507. Positioning post; 508. First return spring; 509. Positioning hole;

[0042] 601. Cable harness cover; 602. Storage rack; 603. Storage slot; 604. Drive column; 605. Traction slot; 606. Traction rope; 607. Movable slot; 608. Reversing block; 609. Divider plate; 610. Protective cover; 611. Reversing rod; 612. Fixing block; 613. Traction block; 614. Articulated arm; 615. Handle; 616. Guide rod; 617. Second return spring; 618. Drive ear; 619. Power assist ring. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] Please see Figure 1-10 This invention provides a technical solution: a high-power liquid-cooled charging gun for new energy vehicles, comprising:

[0045] Charging gun cover 1, the surface of which is provided with a handle 2;

[0046] The charging assembly is installed inside the charging gun sleeve 1. The charging assembly includes a liquid-cooled charging cable 301, a coolant return pipe 302, a terminal block 303, and a charging head 304. The liquid-cooled charging cable 301 has a coolant injection pipe inside, and the coolant return pipe 302 is spirally wound to improve heat dissipation. The liquid-cooled charging cable 301 and the coolant return pipe 302 are both fixedly installed at one end of the terminal block 303. The terminal block 303 has a cooling chamber so that the coolant injected from one end of the liquid-cooled charging cable 301 provides a cooling chamber to cool the terminal block 303 and then returns from the coolant return pipe 302. The charging head 304 is fixedly installed at the end of the terminal block 303 away from the liquid-cooled charging cable 301.

[0047] An assistive assembly is provided on the charging gun sleeve 1 and the handle 2. The assistive assembly includes a cable tie cover 601 fixedly installed in the middle of the charging gun sleeve 1 and the handle 2. A storage rack 602 is fixedly installed on the inner wall of the cable tie cover 601. Storage slots 603 are respectively opened at the upper and lower ends of the middle of the storage rack 602. The inner wall of the storage slot 603 is movably connected to the drive column 604. The side walls of the two drive columns 604 at corresponding positions are provided with traction slots 605. A traction rope 606 is fixedly embedded in the middle of the drive column 604 at the corresponding position of the traction slot 605. The surface of the traction rope 606 is movably connected to the inner wall of the traction slot 605. A movable slot 607 is opened in the middle of the storage rack 602. The surface of the movable slot 607 is connected to the storage slot. The interior of 603 is interconnected. A reversing block 608 is fixedly installed on the inner wall of the movable slot 607, so that one end of the traction rope 606 is wrapped around the surface of the reversing block 608 and passes through the cable harness 601 through the movable slot 607. When the traction rope 606 moves left and right, the traction rope 606, in conjunction with the reversing block 608 and the traction slot 605, drives the drive column 604 to move left and right on the inner wall of the storage slot 603. One end of the drive column 604 is fixedly provided with an assist ring 619, and the assist ring 619 is movably sleeved on the surface of the charging head 304, so that the assist ring 619 moves along the surface of the charging head 304 and pushes the charging head 304 out of the slot. The end of the drive column 604 away from the storage rack 602 is fixedly provided with a drive ear 6. 18. The booster ring 619 is fixedly installed at one end of the drive ear 618. A partition plate 609 for separating the top and bottom of the traction rope 606 is fixedly installed on the inner wall of the cable harness 601. A protective cover 610 is fixedly installed on the top of the inner wall of the handle 2 corresponding to the position of the cable harness 601. A reversing rod 611 is fixedly installed at the end of the protective cover 610 away from the position of the cable harness 601. The traction rope 606 is movably wound around the surface of the reversing rod 611 so that the traction rope 606 is driven on the reversing rod 611 and the reversing block 608. The reversing block 608 is movably connected to the inner wall of the drive column 604. A fixing block 612 is fixedly installed on the surface of the reversing rod 611. A traction block 6 is fixedly installed at one end of the fixing block 612. 13. A guide rod 616 is movably sleeved in the middle of the traction block 613, and the guide rod 616 is fixedly installed on the inner wall of the handle 2. A hinge arm 614 is hinged to the surface of the traction block 613, and a handle 615 is hinged to the end of the hinge arm 614 away from the traction block 613. The top of the handle 615 is hinged to the bottom of the protective cover 610. The middle of the bottom of the protective cover 610 is an open structure, and the traction block 613 is movably connected to the inner wall of the opening position of the protective cover 610 so as not to affect the movement of the hinge arm 614 and the traction block 613. A second return spring 617 is fixedly installed at the end of the traction block 613 away from the hinge arm 614, and the second return spring 617 is fixedly installed on the surface of the guide rod 616.

[0048] When using the above structure, if it is necessary to remove the charging head 304 from the slot, the hand grips the handle 615, causing the handle 615 to hinge with the protective cover 610. This causes the handle 615 to hinge with the hinge arm 614, which in turn causes the hinge arm 614 to move the traction block 613 away from the charging gun sleeve 1. The traction block 613 drives the traction rope 606 to move through the fixing block 612. Since the traction rope 606 is driven by the reversing rod 611 and the reversing block 608, when the middle of the traction rope 606 moves, the traction rope will... 606 drives the drive column 604 to extend from the inner wall of the storage slot 603 through the reversing block 608. This causes the drive column 604 to drive the assist ring 619 to move towards one end of the slot through the drive ear 618. The assist ring 619 then presses against the slot, allowing the charging head 304 to be easily pulled out from the inner wall of the slot. This utilizes the lever principle of the grip 615 and the articulated arm 614, which eliminates the need to actively hold the gun. Simply pressing the grip 615 will push the assist ring 619 to press against the slot and push the charging head 304 out of the inner wall of the slot.

[0049] It also includes an internal stress relief component for eliminating internal stress in the charging assembly. The internal stress relief component includes a rotating ring 401 fixedly mounted on the surface of the charging head 304. A fixed ring 402 is rotatably connected to the surface of the rotating ring 401, and the fixed ring 402 is fixedly mounted on one end of the charging gun sleeve 1. A terminal 303 is rotatably connected to the inner wall of the fixed ring 402. A first limiting ring 403 is fixedly mounted on one end of the surface of the terminal 303. A second limiting ring 404 is fixedly mounted on the inner wall of the charging gun sleeve 1 corresponding to the position of the first limiting ring 403, so that the second limiting ring 404 cooperates with the first limiting ring 403 and the fixed ring 402 cooperates with the rotating ring 401 to limit the horizontal position of the terminal 303 and the charging head 304. A first protective ring 405 is fixedly mounted on the end of the terminal 303 away from the position of the charging head 304. A braided ring 406 is fixedly installed at one end of the device, and a second protective ring 407 is fixedly installed at the end of the braided ring 406 away from the first protective ring 405. The liquid-cooled charging cable 301 and the coolant return pipe 302 are respectively located inside the first protective ring 405, the braided ring 406 and the second protective ring 407, so that the first protective ring 405, the braided ring 406 and the second protective ring 407 respectively wrap the liquid-cooled charging cable 301 and the coolant return pipe 302. A third limiting ring 408 is fixedly installed on the inner wall of the charging gun sleeve 1 corresponding to both ends of the second protective ring 407, so that the two third limiting rings 408 limit the horizontal position of the second protective ring 407. A cable wrapping film 409 is fixedly installed at the end of the second protective ring 407 away from the braided ring 406, and the cable wrapping film 409 is used to wrap and protect the liquid-cooled charging cable 301 and the coolant return pipe 302.

[0050] When the above structure is in use, if the cable generates a large torque due to external factors, the liquid-cooled charging cable 301 and the coolant return pipe 302, which are wrapped by the cable wrapping film 409, will generate torque themselves. This torque will cause the liquid-cooled charging cable 301 and the coolant return pipe 302 to drive the second protective ring 407, the braided ring 406, the first protective ring 405 and the terminal block 303 to rotate on the inner wall of the charging gun sleeve 1, thereby driving the charging head 304 to rotate on the inner wall of the charging gun sleeve 1. At this time, the liquid-cooled charging cable 301 and the charging gun sleeve 1 are in a free rotation state, which is used to eliminate the situation where the torque increases due to external factors.

[0051] It also includes a locking assembly for locking and unlocking the connection between the charging head 304 and the slot. The locking assembly includes a mounting groove 501 formed on the top of the charging gun sleeve 1 and the handle 2. A hook strip 502 is rotatably connected to the middle of the inner wall of the mounting groove 501. An electronic lock 503 is fixedly installed on the inner wall of the mounting groove 501 at the end away from the charging head 304, and the electronic lock 503 is used to restrict the rotation of the hook strip 502. A contact ring 504 is fixedly installed on the surface of the first protective ring 405, and the contact ring 504 is electrically connected to the pins on the terminal block 303. The charging gun sleeve 1 corresponds to the contact ring 504. An electrical contact 505 is fixedly installed on the inner wall of the position, and the electrical contact 505 is electrically connected to the electrical ring 504. The electrical contact 505 is electrically connected to the electronic lock 503 through a wire. A locking hole 506 is opened at the top of the fixed ring 402. A positioning post 507 is movably connected to the inner wall of the locking hole 506. A positioning hole 509 is opened on the side wall of the rotating ring 401. When the positioning post 507 is in the charging state, it is inserted into the inner wall of the positioning hole 509. A first return spring 508 is fixedly installed on the surface of the positioning post 507. The first return spring 508 is fixedly installed on the inner wall of the locking hole 506.

[0052] In use, the above structure drives one end of the hook bar 502 to move upward via the electronic lock 503, thereby causing the other end of the hook bar 502 to fit tightly against the inner wall of the mounting groove 501 and no longer rotate. At this time, the hook bar 502 cooperates with the corresponding structure of the vehicle slot to lock. At the same time, because the hook bar 502 fits tightly against the inner wall of the mounting groove 501, the hook bar 502 drives the positioning pin 507 to move downward and squeeze the first return spring 508. By rotating the charging head 304, the positioning pin 507 enters the inner wall of the positioning hole 509, thereby positioning the position of the charging head 304. At this time, the positioning pin 507 is simultaneously inserted into the inner walls of the locking hole 506 and the positioning hole 509, achieving the purpose of positioning the angle of the charging head 304, making it convenient to insert the charging head 304 into the vehicle slot.

[0053] Working principle: When in use, this invention allows the hook bar 502 to rotate automatically when charging is not required, and the positioning post 507 to separate from the positioning hole 509 under the elastic force of the first return spring 508. Since the charging gun is inserted into the charging pile gun holder when not in use, when the cable generates a large torque due to external factors, the liquid-cooled charging cable 301 and the coolant return pipe 302 wrapped by the cable wrapping film 409 generate torque themselves. This torque causes the liquid-cooled charging cable 301 and the coolant return pipe 302 to drive the second protective ring 407, the braided ring 406, the first protective ring 405, and the terminal block 303 to rotate on the inner wall of the charging gun sleeve 1, thereby driving the charging head 304 to rotate on the inner wall of the charging gun sleeve 1. At this time, the liquid-cooled charging cable 301 and the charging gun sleeve 1 are in a free rotation state, which is used to eliminate the situation where the torque increases due to external factors and avoid the situation where the charging gun is quickly twisted when taking out the gun, which may cause injury to the user.

[0054] When the charging gun is needed, first remove the charging gun sleeve 1 from the charging pile's gun stock. The internal stress relief component releases the torque generated by the liquid-cooled charging cable 301, activating the charging pile and making the charging gun usable. At this point, the electronic lock 503 drives one end of the hook bar 502 upwards, causing the other end to tightly adhere to the inner wall of the mounting slot 501, preventing further rotation. The hook bar 502 then engages with the corresponding structure of the vehicle slot to lock it in place. Simultaneously, because the hook bar 502 is tightly against the inner wall of the mounting slot 501, it causes the positioning pin 507 to move downwards and compress the first return spring 508. By rotating the charging head 304, the positioning pin 507 enters the inner wall of the positioning hole 509, thus positioning the charging head 304. At this time, the positioning pin 507 is simultaneously inserted into the inner walls of both the locking hole 506 and the positioning hole 509. This achieves the purpose of positioning the angle of the charging head 304, making it convenient to insert the charging head 304 into the vehicle slot. At the same time, since the hook bar 502 can no longer rotate, the charging head 304 and the fixing ring 402 remain relatively stationary during the charging process. The relevant pins in the wiring terminal 303 are electrically connected to the electronic lock 503 through the contact ring 504, contact point 505, and wire. When charging is completed, the electronic lock 503 resets and no longer presses against the hook bar 502. At this time, the hook bar 502 is in a free rotation state. Pressing one end of the hook bar 502 corresponding to the electronic lock 503 will cause the hook bar 502 to rotate and no longer squeeze the positioning post 507. At this time, the positioning post 507 moves out from the inner wall of the positioning hole 509 under the reset action of the first reset spring 508. That is, the charging head 304 is now in a free rotation state on the inner wall of the charging gun sleeve 1.

[0055] When the charging head 304 needs to be removed from the slot, the handle 615 is gripped, causing it to hinge with the protective cover 610. This hinges the handle 615, which in turn causes the hinge arm 614 to hinge, moving the traction block 613 away from the charging gun sleeve 1 and compressing the second return spring 617. As the traction block 613 moves, it drives the traction rope 606 via the fixing block 612. Since the traction rope 606 is driven by the reversing rod 611 and the reversing block 608, when the middle of the traction rope 606 moves, it causes the drive column 604 to extend from the inner wall of the storage slot 603 via the reversing block 608. This causes the drive column 604 to drive the assist ring 619 towards one end of the slot via the drive ear 618, thus moving the assist ring 619 further away from the charging gun sleeve 1. 19. The charging head 304 is pulled out of the inner wall of the slot by squeezing the slot. The assist ring 619 moves along the direction of the charging head 304. That is, when the assist ring 619 moves to press the slot, the force applied is set perpendicular to the friction force, so that the charging head 304 can be easily pulled out of the inner wall of the slot. That is, the lever principle of the handle 615 and the hinge arm 614 is used to save effort. When using it, there is no need to actively pull out the gun. Just press the handle 615 to push the assist ring 619 to squeeze the slot and push the charging head 304 out of the inner wall of the slot. Compared with the existing technology that uses a direct pulling method to pull out the charging gun, the device of the present invention allows the user to easily overcome the friction and structural resistance between the charging gun and the car charging interface by applying only a small force when pulling out the charging gun, effectively solving the problem of the difficulty in pulling out the existing charging gun.

[0056] When the handle 615 is released, the second return spring 617 returns the traction block 613 to its initial state under the return stretching action. That is, the traction block 613, together with the fixed block 612, drives the traction rope 606 to move in the opposite direction, so that the traction rope 606 pulls the drive column 604 to be stored in the inner wall of the recycling tank 603.

[0057] By setting the traction groove 605 and the movable groove 607, a portion of the traction rope 606 is located on the inner wall of the traction groove 605, and is reversed at the position of the reversing block 608 via the movable groove 607. This allows the traction rope 606 to drive between the reversing block 608 and the reversing rod 611. When the top traction rope 606 drives clockwise, the traction rope 606 at one end of the traction groove 605 exerts force, causing the traction rope 606 to pull the drive column 604 out of the inner wall of the receiving groove 603. At the same time, the notch in the traction groove 605 allows the traction rope 606 to change its length inside the traction groove 605, thus achieving the purpose of moving the drive column 604. Furthermore, when the top traction rope 606 rotates counterclockwise, the end of the traction rope 606 corresponding to the drive column 604 begins to exert force, which in turn pulls the drive column 604 into the inner wall of the storage slot 603. This allows the reciprocating movement of the traction rope 606 to drive the drive column 604 to reciprocate. Combined with the effortless traction of the handle 615, users no longer need to use excessive force or improper operation to pull out the charging gun, reducing the risk of damage to the charging gun or car charging interface due to improper force. At the same time, standardized and effortless operation also reduces safety hazards caused by operational errors, ensuring the stability and reliability of the charging process.

[0058] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0059] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-power liquid-cooled charging gun for new energy vehicles, characterized in that: include: A charging gun sleeve (1) is provided with a handle (2) on its surface. A charging assembly is provided inside the charging gun sleeve (1), the charging assembly including a liquid-cooled charging cable (301), a coolant return pipe (302), a terminal block (303) and a charging head (304). An assistive component is provided on the charging gun sleeve (1) and the handle (2). The assistive component includes a cable harness cover (601) fixedly connected to the middle of the charging gun sleeve (1) and the handle (2). A storage rack (602) is fixedly connected to the inner wall of the cable harness cover (601). Storage slots (603) are respectively opened at the upper and lower ends of the middle of the storage rack (602). A drive column (604) is movably connected to the inner wall of the storage slot (603). A traction slot (605) is opened on the side wall of the two drive columns (604) at corresponding positions. A traction rope (606) is fixedly embedded in the middle of the drive column (604) at the position corresponding to the traction slot (605). The surface of the traction rope (606) is movably connected to the inner wall of the traction groove (605). The storage rack (602) has a movable groove (607) in the middle, and the surface of the movable groove (607) is connected to the interior of the storage groove (603). A reversing block (608) is fixedly connected to the inner wall of the movable groove (607) so that one end of the traction rope (606) is wrapped around the surface of the reversing block (608) and passes through the cable harness (601) through the movable groove (607). When the traction rope (606) moves left and right, the traction rope (606) cooperates with the reversing block (608) and the traction groove (605) to drive the drive column (604) to move left and right on the inner wall of the storage groove (603). One end of the drive column (604) is fixedly provided with an assist ring (619), and the assist ring (619) is movably sleeved on the surface of the charging head (304) so ​​that the assist ring (619) moves along the surface of the charging head (304) and pushes the charging head (304) out of the slot.

2. The high-power liquid-cooled charging gun for new energy vehicles according to claim 1, characterized in that: The drive column (604) is fixedly connected to a drive ear (618) at one end away from the storage rack (602), and the booster ring (619) is fixedly connected to one end of the drive ear (618). The inner wall of the cable harness cover (601) is fixedly connected to a partition plate (609) for separating the top and bottom of the traction rope (606).

3. A high-power liquid-cooled charging gun for new energy vehicles according to claim 2, characterized in that: A protective cover (610) is fixedly connected to the top of the inner wall of the handle (2) corresponding to the cable harness cover (601). A reversing rod (611) is fixedly connected to one end of the protective cover (610) away from the cable harness cover (601), and a traction rope (606) is movably wrapped around the surface of the reversing rod (611) so that the traction rope (606) is driven on the reversing rod (611) and the reversing block (608). The reversing block (608) is movably connected to the inner wall of the drive column (604).

4. A high-power liquid-cooled charging gun for new energy vehicles according to claim 3, characterized in that: A fixing block (612) is fixedly connected to the surface of the reversing lever (611). A traction block (613) is fixedly connected to one end of the fixing block (612). A guide rod (616) is movably sleeved in the middle of the traction block (613), and the guide rod (616) is fixedly connected to the inner wall of the handle (2). A hinge arm (614) is hinged to the surface of the traction block (613), and a handle (615) is hinged to the end of the hinge arm (614) away from the traction block (613). The top of 15) is hinged to the bottom of the protective cover (610). The middle of the bottom of the protective cover (610) is an open structure, and the traction block (613) is movably connected to the inner wall of the opening position of the protective cover (610) so as not to affect the movement of the hinge arm (614) and the traction block (613). The end of the traction block (613) away from the hinge arm (614) is fixedly connected to a second return spring (617), and the second return spring (617) is fixedly connected to the surface of the guide rod (616).

5. A high-power liquid-cooled charging gun for new energy vehicles according to claim 4, characterized in that: The liquid-cooled charging cable (301) is provided with a coolant injection pipe inside, and the coolant return pipe (302) is spirally wound to improve the heat dissipation effect. The liquid-cooled charging cable (301) and the coolant return pipe (302) are both fixedly connected to one end of the terminal (303), and the terminal (303) is provided with a cooling cavity so that the coolant injected from one end of the liquid-cooled charging cable (301) provides a cooling cavity to cool the terminal (303) and then flows back from the coolant return pipe (302). The charging head (304) is fixedly connected to the end of the terminal (303) away from the liquid-cooled charging cable (301).

6. A high-power liquid-cooled charging gun for new energy vehicles according to claim 5, characterized in that: It also includes an internal stress relief component for eliminating internal stress in the charging assembly. The internal stress relief component includes a rotating ring (401) fixedly connected to the surface of the charging head (304). A fixed ring (402) is rotatably connected to the surface of the rotating ring (401), and the fixed ring (402) is fixedly connected to one end of the charging gun sleeve (1). The terminal block (303) is rotatably connected to the inner wall of the fixed ring (402). A first limiting ring (403) is fixedly connected to one end of the surface of the terminal block (303). A second limiting ring (404) is fixedly connected to the inner wall of the charging gun sleeve (1) corresponding to the position of the first limiting ring (403), so that the second limiting ring (404) cooperates with the first limiting ring (403) and the fixed ring (402) cooperates with the rotating ring (401) to limit the horizontal position of the terminal block (303) and the charging head (304).

7. A high-power liquid-cooled charging gun for new energy vehicles according to claim 6, characterized in that: A first protective ring (405) is fixedly connected to one end of the terminal block (303) away from the charging head (304). A braided ring (406) is fixedly connected to one end of the first protective ring (405) away from the terminal block (303). A second protective ring (407) is fixedly connected to one end of the braided ring (406) away from the first protective ring (405). The liquid-cooled charging cable (301) and the coolant return pipe (302) are located inside the first protective ring (405), the braided ring (406), and the second protective ring (407), respectively, so that the first protective ring (405) and the braided ring (407) are connected to the terminal block (304). 06) The second protective ring (407) respectively wraps the liquid-cooled charging cable (301) and the coolant return pipe (302). The inner wall of the charging gun sleeve (1) corresponding to both ends of the second protective ring (407) is fixedly connected with a third limiting ring (408) so that the two third limiting rings (408) limit the horizontal position of the second protective ring (407). The end of the second protective ring (407) away from the braided ring (406) is fixedly connected with a cable wrapping film (409), and the cable wrapping film (409) is used to wrap and protect the liquid-cooled charging cable (301) and the coolant return pipe (302).

8. A high-power liquid-cooled charging gun for new energy vehicles according to claim 7, characterized in that: It also includes a locking assembly for locking and unlocking the connection between the charging head (304) and the slot. The locking assembly includes a mounting groove (501) formed on the top of the charging gun sleeve (1) and the handle (2). A hook strip (502) is rotatably connected to the middle of the inner wall of the mounting groove (501). An electronic lock (503) is fixedly connected to the inner wall of the mounting groove (501) at the end away from the charging head (304). The electronic lock (503) is used to restrict the hook strip (502). 2) Rotation, the surface of the first protective ring (405) is fixedly connected to a contact ring (504), and the contact ring (504) is electrically connected to the pins on the terminal block (303). The inner wall of the charging gun sleeve (1) corresponding to the position of the contact ring (504) is fixedly connected to a contact point (505), and the contact point (505) is electrically connected to the contact ring (504). The contact point (505) is electrically connected to the electronic lock (503) through a wire.

9. A high-power liquid-cooled charging gun for new energy vehicles according to claim 8, characterized in that: The top of the fixed ring (402) is provided with a locking hole (506), and a positioning post (507) is movably connected to the inner wall of the locking hole (506). The side wall of the rotating ring (401) is provided with a positioning hole (509), and the positioning post (507) is inserted into the inner wall of the positioning hole (509) when it is in the charging state. A first return spring (508) is fixedly connected to the surface of the positioning post (507), and the first return spring (508) is fixedly connected to the inner wall of the locking hole (506).

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