A DC charging gun

Abstract

The present invention relates to the technical field of DC charging gun structure, and in particular to a DC charging gun, comprising a charging gun housing, the charging gun housing comprising a charging gun housing handle, a groove is provided at the top of the charging gun housing handle, and a control part is installed in the groove, a plug accessory is installed on the left side of the charging gun housing handle, and the plug accessory comprises a straight plug terminal, a plug-in ring plate is connected to the right side of the straight plug terminal, and the plug-in ring plate is inserted into the left cavity of the charging gun housing handle. The present invention provides a C-shaped card groove and a groove edge snap ring on the side of the plug pressure plate, and the DC contact is embedded from the side of the plug pressure plate when installing, so that the DC contact is built into the C-shaped card of the plug pressure plate, and the groove edge snap ring can be buckled in the ring groove on the surface of the DC contact, thereby realizing the installation of the DC contact, and the DC contact and the plug pressure plate are connected by snap-on type, and multiple pairs of DC contacts can be conveniently assembled, and the wires are pressed first and then assembled, and they can be reworked and repaired at any time.

Description

Technical Field

[0001] The present invention relates to the technical field of direct current charging gun structures, and in particular to a direct current charging gun. Background Art

[0002] With the rapid development of the automobile industry, carbon dioxide emissions in urban environments have also increased, making low-emission new energy vehicles gradually become the new mainstream in the automobile industry. Among them, pure electric vehicles or hybrid electric vehicles have developed the fastest. Electric vehicles are mainly charged by connecting charging guns to charging piles.

[0003] The DC charging gun converts the three-phase AC power of the power grid into DC power through a built-in power conversion unit. The converted DC power is directly transmitted to the power battery pack of the electric vehicle through the charging gun for fast charging. The DC charging gun and the electric vehicle exchange real-time data through a communication protocol to ensure the safety and efficiency of the charging process. During the charging process, the DC charging gun will monitor parameters such as current, voltage, and temperature in real time, and automatically cut off the power supply under abnormal conditions to protect the battery and charging equipment.

[0004] The CC1 contact of the existing DC charging gun on the market is fixed on the surface of the plug pressure plate. The CC1 contact is fixed on the plug pressure plate to form an integrated structure. When the CC1 contact is damaged, it cannot be repaired or maintained later. The upper cover of the DC charging gun is only installed on the DC gun shell by snapping. During the line maintenance process, the upper cover snap of the DC charging gun is directly stressed. When the upper cover is opened by force, the snap is easily broken and broken. Therefore, a DC charging gun is needed to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to solve the problems raised in the above background technology.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A DC charging gun, comprising a charging gun housing, the charging gun housing comprising a charging gun housing handle, a groove is provided at the top of the charging gun housing handle, and a control component is installed in the groove, a plug accessory is installed on the left side of the charging gun housing handle, and the plug accessory comprises a straight plug end, a plug-in ring plate is connected to the right side of the straight plug end, and the plug-in ring plate is inserted into the left cavity of the charging gun housing handle, a plug pressure plate is embedded in the right side of the plug-in ring plate, and a plug pressure plate is installed on the side of the plug pressure plate DC contact, the plug pressure plate is fixed to the inner wall of the plug-in ring plate by a long rod screw, a slot is opened on the left side of the charging gun shell handle, and the charging gun shell handle and the plug-in ring plate can be plugged in to ensure the convenience of straight plug terminal installation, the plug pressure plate is embedded in the plug-in ring plate, and the plug pressure plate is fixed to the plug-in ring plate by a long rod screw. After the DC contact is installed in the C-shaped slot on the side of the plug pressure plate, the outer side of the plug pressure plate contacts the inner wall of the plug-in ring plate, which can prevent the DC contact from shaking left and right and falling off.

[0007] Preferably, an upper cable locking block is connected to the right side of the charging gun housing handle, and a lower cable locking block is buckled on the bottom end of the upper cable locking block, and the upper cable locking block and the lower cable locking block are fixed to each other on the side by screw and nut accessories, and a waist-shaped drainage hole connected to the side of the charging gun housing handle and the inner wall of the groove is provided, and there are 8 waist-shaped drainage holes, and the waist-shaped drainage holes of the charging gun housing handle are designed in a belt-like symmetrical arrangement, and the waist-shaped drainage holes are lower than the water level of the groove, which is different from the traditional lower cable locking block that is directly made into a threaded blind hole, and the screw is directly connected to the blind threaded hole, which is easy to slip due to multiple operations or over-tightening, making the lower cable locking block invalid and scrapped.

[0008] Preferably, a rubber pressure ring is connected to the inner wall of the grip end of the charging gun housing handle, and three rubber pressure rings are provided. The three rubber pressure rings are all fixed on the inner wall of the grip end of the charging gun housing handle. The rubber pressure ring can be used to restrain the cable to prevent the cable from shaking in the charging gun housing handle due to inappropriate size. When the cable is limited by the rubber pressure ring, the cable can also be prevented from being squeezed and damaged during bending.

[0009] Preferably, a C-shaped slot compatible with the DC contact is provided on the side of the plug pressure plate, and the DC contact is embedded in the C-shaped slot on the side of the plug pressure plate. The DC contact can be limited by the C-shaped slot to prevent the DC contact from shaking after installation, thereby ensuring the portability of the DC contact installation.

[0010] Preferably, a groove edge snap ring is provided at the top of the inner wall of the C-shaped groove of the plug pressure plate, and the groove edge snap ring is buckled on the surface of the DC contact through the annular groove. By opening a C-shaped groove and a groove edge snap ring on the side of the plug pressure plate, the DC contact is embedded from the side of the plug pressure plate during installation, so that the DC contact is built into the C-shaped clamp of the plug pressure plate, and the groove edge snap ring can be buckled in the annular groove on the surface of the DC contact, thereby realizing the installation of the DC contact. The DC contact and the plug pressure plate are connected by a snap-on type, and multiple pairs of DC contacts can be conveniently assembled by first pressing the wires and then assembling. The process is simple and can be reworked and repaired at any time, so that the DC contacts can be easily replaced independently.

[0011] Preferably, a receiving groove is provided on the right side of the plug pressure plate, and a temperature sensor is inserted in the receiving groove. A heat dissipation groove is provided on the inner wall of the C-shaped slot of the plug pressure plate. By inserting the temperature sensor in the receiving groove of the plug pressure plate, heat shrink wrapping can be avoided, heat exchange sensitivity can be maintained, and the material and process costs of heat shrink tubes can be eliminated.

[0012] Preferably, the control component includes a cover group, the cover group includes an upper cover, a linkage switch is arranged under the upper cover, the top of the groove of the charging gun housing handle is connected to a limit plate frame, the linkage switch is embedded in the limit plate frame, and a rubber button is arranged on the right side of the top of the upper cover. By pressing the rubber button, the rotation state of the push rod on the surface of the shaft pin can be controlled, thereby facilitating the control of the opening and closing card connection state of the charging gun with the charging port when in use.

[0013] Preferably, a side wall panel is provided on the inner edge of the bottom end of the upper cover, and inverted clips are equidistantly provided around the bottom end of the side wall panel. The inverted clip is embedded in the inner wall of the groove at the top end of the charging gun housing handle through a slot. The inverted clip on the side of the side wall panel is embedded in the slot of the inner wall of the groove of the charging gun housing handle to ensure the stability of the installation of the upper cover. The side wall panel is designed with elastic PVC, which can effectively prevent the inverted clip from breaking and flying off when it is tilted. The push rod becomes a pre-assembled part, which improves production efficiency and provides maintainability.

[0014] Preferably, two axle pins are symmetrically connected to the top of the inner wall of the upper cover, and a push rod is movably connected to the surface of the axle pin, a return spring is arranged below the right extended end of the push rod, and the bottom end of the return spring is in contact with the surface of the linkage switch, and a support spring is installed between the two axle pins. A hinge is formed by the two symmetrical axle pins, and the push rod and the upper cover form a movable coaxial fit. The axle pins on both sides form elastic tightening pressure through the support springs to prevent loosening.

[0015] The present invention has at least the following beneficial effects: 1. By setting plug accessories, portable maintenance of DC contacts can be achieved. Compared with the traditional structure, this device opens a C-shaped groove and a groove edge snap ring on the side of the plug pressure plate. When the DC contact is installed, it is embedded from the side of the plug pressure plate, so that the DC contact is built into the C-shaped card of the plug pressure plate. The groove edge snap ring can be buckled in the ring groove on the surface of the DC contact, thereby realizing the installation of the DC contact. The DC contact and the plug pressure plate are connected by a snap-on type. Multiple pairs of DC contacts can be conveniently assembled. First, press the wires and then assemble. The process is simple and can be reworked and repaired at any time, which is convenient for independent replacement of DC contacts.

[0016] 2. By setting a temperature sensor, the sensitivity of heat exchange is ensured. The device is provided with a receiving groove on the back of the plug pressure plate, and a heat dissipation groove is provided on the side of the receiving groove at a position that matches the inner wall of the C-shaped slot of the plug pressure plate. The temperature sensor is inserted into the receiving groove of the plug pressure plate, which can avoid heat shrink wrapping, maintain heat exchange sensitivity, and eliminate the material and process costs of heat shrink tubes. The heat dissipation groove design on the inner wall of the C-shaped slot of the plug pressure plate can ensure the temperature sensing and heat dissipation effect of the temperature sensor.

[0017] 3. By setting a control part, the stability of the upper cover installed on the top of the handle of the charging gun housing is achieved. The device is provided with a side wall plate through the inner wall of the side of the bottom end of the upper cover, and three inverted card plates are arranged along the inner wall of the side wall plate. When the upper cover is buckled on the top of the charging gun housing, the side wall plate can be inserted into the side of the inner wall of the top of the charging gun housing. The radial freedom limit of the side wall plate can prevent the upper cover from shaking. The inverted card plate is inverted on the charging gun housing to limit the freedom. The inverted card plate cooperates with the side wall plate to reinforce the inverted card plate. The side wall plate is made of elastic PVC material, so that the inverted card plate and the side wall plate form a whole to prevent the inverted card plate from breaking easily. The upper cover is further installed and reinforced by inserting the push rod into the card slot of the charging gun housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0019] Figure 1 This is a schematic diagram of the external structure of a DC charging gun proposed by the present invention; Figure 2 This is a schematic diagram of the internal disassembly structure of a DC charging gun proposed by the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of a middle cover assembly of a DC charging gun proposed by the present invention; Figure 4 This is a partial bottom view structural diagram of a cover assembly in a DC charging gun proposed by the present invention; Figure 5 This is a schematic diagram of a three-dimensional disassembled structure of a charging gun housing in a DC charging gun proposed by the present invention; Figure 6 This is a schematic diagram of the internal structure of a plug accessory in a DC charging gun proposed by the present invention; Figure 7 A schematic diagram of a three-dimensional docking structure between a plug pressure plate and a DC contact in a DC charging gun proposed by the present invention; Figure 8 This is a schematic diagram of the three-dimensional structure of a linkage switch in a DC charging gun proposed by the present invention; Fig. 9 This is a schematic diagram of the top view of the structure of a DC charging gun 11 proposed by the present invention.

[0020] In the figure: 1. Charging gun housing; 11. Charging gun housing handle; 12. Lower cable lock block; 13. Upper cable lock block; 14. Screw and nut accessories; 15. Rubber pressure ring; 2. Plug accessories; 21. Straight plug terminal; 22. Plug ring plate; 23. Plug pressure plate; 24. DC contact; 25. Temperature sensor; 26. Long rod screw; 3. Control part; 31. Cover group; 311. Upper cover; 312. Inverted card plate; 313. Rubber button; 314. Axis pin; 315. Support spring; 316. Push rod; 317. Side wall plate; 32. Linkage switch; 33. Reset spring; 34. Limit plate frame. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] Reference Figure 1-9 A DC charging gun comprises a charging gun housing 1, the charging gun housing 1 comprises a charging gun housing handle 11, a groove is provided at the top of the charging gun housing handle 11, and a control component 3 is installed in the groove, a plug accessory 2 is installed on the left side of the charging gun housing handle 11, and the plug accessory 2 comprises a straight plug terminal 21, a plug-in ring plate 22 is connected to the right side of the straight plug terminal 21, and the plug-in ring plate 22 is inserted into the left cavity of the charging gun housing handle 11, a plug pressure plate 23 is embedded and installed in the right side of the plug-in ring plate 22, and a DC contact 24 is installed on the side of the plug pressure plate 23, and the plug pressure plate 23 is fixed to the inner wall of the plug-in ring plate 22 by a long rod screw 26.

[0023] An upper cable locking block 13 is connected to the right side of the charging gun housing handle 11, and the lower cable locking block 12 is buckled on the bottom end of the upper cable locking block 13. The upper cable locking block 13 and the lower cable locking block 12 are fixed to the sides by screw and nut accessories 14. A waist-shaped drainage hole connected to the inner wall of the groove is provided on the side of the charging gun housing handle 11, and there are 8 waist-shaped drainage holes. The waist-shaped drainage holes of the charging gun housing handle 11 are symmetrically arranged in a belt-like design, and the waist-shaped drainage holes are lower than the water level in the groove.

[0024] The inner wall of the grip end of the charging gun housing handle 11 is connected to a rubber pressure ring 15 , and three rubber pressure rings 15 are provided, and the three rubber pressure rings 15 are all fixed to the inner wall of the grip end of the charging gun housing handle 11 .

[0025] A C-shaped slot matching the DC contact 24 is formed on the side of the plug pressing plate 23 , and the DC contact 24 is embedded in the C-shaped slot on the side of the plug pressing plate 23 .

[0026] A groove edge snap ring is provided at the top of the inner wall of the C-shaped snap groove of the plug pressing plate 23, and the groove edge snap ring is buckled on the surface of the DC contact 24 through the ring groove.

[0027] A receiving groove is provided on the right side of the plug pressing plate 23 , and a temperature sensor 25 is inserted into the receiving groove. A heat dissipation groove is provided on the inner wall of the C-shaped slot of the plug pressing plate 23 .

[0028] The control component 3 includes a cover group 31, which includes an upper cover 311. A linkage switch 32 is arranged under the upper cover 311. The top of the groove of the charging gun housing handle 11 is connected to a limit plate frame 34. The linkage switch 32 is embedded in the limit plate frame 34. A rubber button 313 is arranged on the right side of the top of the upper cover 311. The cover group 31 has an enveloping protective design and can be used in weather such as frost, snow and freezing no matter in the northwest or northeast.

[0029] A side wall plate 317 is arranged at the inner edge of the bottom side of the upper cover 311, and an inverted card plate 312 is arranged equidistantly around the bottom of the side wall plate 317. The inverted card plate 312 is embedded in the inner wall of the groove at the top end of the charging gun housing handle 11 through a card slot.

[0030] Two axle pins 314 are symmetrically connected to the top of the inner wall of the upper cover 311, and a push rod 316 is movably connected to the surface of the axle pin 314. A return spring 33 is arranged below the right extended end of the push rod 316, and the bottom end of the return spring 33 is in contact with the surface of the linkage switch 32, and a support spring 315 is installed between the two axle pins 314.

[0031] A slot is provided on the left side of the charging gun housing handle 11, and the charging gun housing handle 11 and the plug-in ring plate 22 can be plugged in to ensure the convenience of installing the straight plug terminal 21. The plug pressure plate 23 is embedded in the plug-in ring plate 22, and the plug pressure plate 23 is fixed in the plug-in ring plate 22 by a long rod screw 26. After the DC contact 24 is installed in the C-shaped slot on the side of the plug pressure plate 23, the outer side of the plug pressure plate 23 contacts the inner wall of the plug-in ring plate 22, which can prevent the DC contact 24 from shaking left and right and falling off. Different from the traditional fixed design of DC contact 24, the detachable design of DC contact 24 is also convenient for the staff to perform gap operation on DC contact 24 in the later stage. Different from the traditional lower cable locking block 12 which is directly made into a threaded blind hole, the screw is directly connected to the blind threaded hole, which is easy to slip due to repeated operation or over-tightening, making the lower cable locking block 12 invalid and scrapped. In this design, the upper cable locking block 13 and the screw and nut accessories 14 are locked by the screw and nut accessories 14, and the locking force is long-lasting and reliable, and the locking and unlocking operations are repeated without failure.

[0032] When the cable is inserted into the handle end inside the charging gun housing handle 11, the rubber pressure ring 15 can be used to constrain the cable to prevent the cable from shaking inside the charging gun housing handle 11 due to inappropriate size. When the cable is limited by the rubber pressure ring 15, it can also prevent the cable from being squeezed and damaged during bending. When installing the DC contact 24, the DC contact 24 can be embedded from the side of the plug pressure plate 23, so that the DC contact 24 is embedded in the C-shaped slot of the plug pressure plate 23. The DC contact 24 can be inserted into the C-shaped slot through the C-shaped slot. The DC contact 24 is limited to avoid shaking after installation, thereby ensuring the portability of the installation of the DC contact 24. When the DC contact 24 is installed, the DC contact 24 is installed in the C-shaped slot of the plug pressure plate 23. The groove edge clamping ring on the inner wall of the C-shaped slot is embedded in the ring groove of the DC contact 24 to achieve the installation and fixation of the DC contact 24, thereby ensuring the stability of the DC contact 24 installed in the C-shaped slot of the plug pressure plate 23. The movable design of the DC contact 24 allows for easy independent disassembly, assembly and replacement of the DC contact 24.

[0033] By inserting the temperature sensor 25 into the receiving groove of the plug pressure plate 23, heat shrink wrapping is not required, heat exchange is sensitive, and the material and process costs of heat shrink tubes are eliminated. The heat dissipation groove design on the inner wall of the C-shaped slot of the plug pressure plate 23 can ensure the temperature sensing and heat dissipation effect of the temperature sensor 25. An extension plate end is provided on the right side of the push rod 316, and a rubber button 313 is provided above the extension plate end. By pressing the rubber button 313, the rotation state of the push rod 316 on the surface of the shaft pin 314 can be controlled, thereby facilitating the control of the opening and closing connection state of the charging gun with the charging port when in use. The reset spring 33 can be installed through the limiting plate frame 34, so that the reset spring 33 can be positioned to prevent the reset spring 33 from loosening after installation.

[0034] When installing the upper cover 311, the side wall plate 317 at the bottom end of the upper cover 311 can be embedded in the inner wall of the groove of the charging gun housing handle 11, so as to install and position the upper cover 311. After the installation is completed, the inverted card plate 312 on the side of the side wall plate 317 is embedded in the card groove of the inner wall of the groove of the charging gun housing handle 11 to ensure the stability of the installation of the upper cover 311. The side wall plate 317 is designed with elastic PVC, which can effectively prevent the inverted card plate 312 from breaking and flying when it is tilted. The push rod 316 becomes a pre-assembled part, which improves production efficiency and provides maintainability. The hinge is formed by two symmetrical axis pins 314, and the push rod 316 and the upper cover 311 form a movable coaxial fit. The axis pins 314 on both sides form elastic tightening pressure through the support spring 315 to prevent loosening. A rigid lug is symmetrically arranged on both sides of the operating part of the extended end of the push rod 316 to prevent harsh working conditions. The lower pressing rod 316 is abnormally deformed and the upper cover 311 deviates from the image surface. The directional ribs and grooves of the upper cable locking block 13, the lower cable locking block 12 and the charging gun shell handle 11 are designed to be large and small, with different sizes, small on the upper and large on the lower, which can effectively prevent assembly mistakes. The high-strength M4 screw and nut accessories 14 connect and tighten the upper cable locking block 13 and the lower cable locking block 12. Even if the hardness and outer diameter of the cable have a certain amount of deviation, the cable locking block 13 and the lower cable locking block 12 can still be seamlessly spliced. The intensive gun body design is compatible with DC slow charging and DC fast charging, both small DC and large DC, with current specifications ranging from 10A-250A, and cable diameters ranging from Ф10mm-Ф30mm. The compatibility is strong enough. The terminal of the DC contact 24 adopts a crimping process that is compatible with mechanical crimping and ultrasonic welding. In response to the development trend of new technologies, the process technology can be switched at any time, and the thermal management is diversified to meet the needs of customers of different grades.

[0035] Working principle: According to the attached Figure 3 With attached Figure 4 As shown, in actual application, by moving the inverted card plate 312, the inverted card plate 312 drives the side wall plate 317 to swing, so as to facilitate the upper cover 311 and the top of the charging gun housing handle 11 to be opened. At this time, the upper cover 311 is pulled out, and the linkage switch 32 can be inspected and repaired. A limit plate frame 34 is provided on the inner wall of the groove at the top of the charging gun housing handle 11. The linkage switch 32 is embedded in the limit plate frame 34. When installing the upper cover 311, the upper cover 311 can be pressed and buckled on the top of the charging gun housing handle 11, so that the side wall plate 317 is embedded in the inner wall of the groove of the charging gun housing handle 11, and the inverted card plate 312 is controlled to be clamped in the card slot of the inner wall of the groove of the charging gun housing handle 11, so as to facilitate the installation of the upper cover 311. Secondly, according to the attached Figure 6 With attached Figure 7As shown, by opening the top of the charging gun housing handle 11, the bolts on the inner wall of the groove are taken out, and then the straight plug terminal 21 can be separated from the left side of the charging gun housing handle 11, and the straight plug terminal 21 can be pulled out of the left side of the charging gun housing handle 11 by pulling out. At this time, the bolt on the right side of the plug pressure plate 23 is removed to separate the plug pressure plate 23 from the right side of the straight plug terminal 21, and the plug pressure plate 23 is pulled out of the plug ring plate 22, and the DC contact 24 can be pulled out. Multiple DC contacts 24 can be taken out of the C-shaped slot of the plug pressure plate 23 in turn, so that the damaged DC contact 24 can be replaced conveniently.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A DC charging gun, comprising a charging gun housing (1), characterized in that: The charging gun housing (1) comprises a charging gun housing handle (11), the top of the charging gun housing handle (11) is provided with a groove, and a control component (3) is mounted in the groove; a plug accessory (2) is mounted on the left side of the charging gun housing handle (11), and the plug accessory (2) comprises a straight plug terminal (21); a plug ring plate (22) is connected to the right side of the straight plug terminal (21), and the plug ring plate (22) is inserted into the left cavity of the charging gun housing handle (11); a plug pressure plate (23) is embedded and installed in the right side of the plug ring plate (22), and a DC contact (24) is mounted on the side of the plug pressure plate (23), and the plug pressure plate (23) is fixed to the inner wall of the plug ring plate (22) by a long rod screw (26).

2. A DC charging gun according to claim 1, characterized in that: An upper cable lock block (13) is connected to the right side of the charging gun housing handle (11), and the lower cable lock block (12) is buckled at the bottom end of the upper cable lock block (13). The upper cable lock block (13) and the lower cable lock block (12) are fixed to each other at the sides by screw and nut accessories (14). The side of the charging gun housing handle (11) and the inner wall of the groove are provided with waist-shaped drainage holes that are connected, and there are 8 waist-shaped drainage holes. The waist-shaped drainage holes of the charging gun housing handle (11) are designed to be symmetrically arranged in a belt-like manner, and the waist-shaped drainage holes are lower than the water level of the groove.

3. A DC charging gun according to claim 2, characterized in that: The inner wall of the grip end of the charging gun housing handle (11) is connected to a rubber pressure ring (15), and three rubber pressure rings (15) are provided, and the three rubber pressure rings (15) are all fixed to the inner wall of the grip end of the charging gun housing handle (11).

4. A DC charging gun according to claim 1, characterized in that: A C-shaped slot matching the DC contact (24) is provided on the side of the plug pressing plate (23); the DC contact (24) is embedded in the C-shaped slot on the side of the plug pressing plate (23).

5. A DC charging gun according to claim 4, characterized in that: A groove edge clamping ring is provided at the top end of the inner wall of the C-shaped clamping groove of the plug pressing plate (23), and the groove edge clamping ring is clamped on the surface of the DC contact (24) through the ring groove.

6. A DC charging gun according to claim 4, characterized in that: The right side of the plug pressing plate (23) is provided with a receiving groove, and a temperature sensor (25) is inserted into the receiving groove. The inner wall of the C-shaped slot of the plug pressing plate (23) is provided with a heat dissipation groove.

7. A DC charging gun according to claim 1, characterized in that: The control component (3) comprises a cover group (31), the cover group (31) comprises an upper cover (311), a linkage switch (32) is arranged below the upper cover (311), the top end of the groove of the charging gun housing handle (11) is connected to a limit plate frame (34), the linkage switch (32) is embedded in the limit plate frame (34), and a rubber button (313) is arranged on the right side of the top end of the upper cover (311).

8. A DC charging gun according to claim 7, characterized in that: A side wall plate (317) is arranged at the inner edge of the bottom side of the upper cover (311), and an inverted card plate (312) is arranged equidistantly around the bottom of the side wall plate (317), and the inverted card plate (312) is embedded in the inner wall of the groove at the top end of the charging gun housing handle (11) through a card slot.

9. A DC charging gun according to claim 8, characterized in that: Two shaft pins (314) are symmetrically connected to the top of the inner wall of the upper cover (311), and a push rod (316) is movably connected to the surface of the shaft pin (314). A return spring (33) is arranged below the right extended end of the push rod (316), and the bottom end of the return spring (33) contacts and docks with the surface of the linkage switch (32). A support spring (315) is installed between the two shaft pins (314).

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