New energy vehicle charging safety early warning device

Abstract

The invention relates to the technical field of new energy vehicle charging equipment, in particular to a new energy vehicle charging safety early warning device which can give out alarm information when vibration at the charging connection position is too large during charging so as to remind field personnel to conduct subsequent operation. Comprising a first clamping piece fixedly connected with a first charging port and a second clamping piece arranged outside a second charging port in a sleeving mode, and the relative vibration condition between the first charging port and the second charging port in the charging process is detected through a detection mechanism arranged on the second clamping piece. Accurate statistical analysis of data of electrical variables in the charging process is not needed, alarm information can be sent out in time according to the vibration condition in the charging process, and potential safety hazards are reduced.

Description

Technical Field

[0001] The present application relates to the technical field of new energy vehicle charging equipment, and in particular to a new energy vehicle charging safety warning device. Background Art

[0002] The statements in this section merely provide background technical information related to the present application and do not necessarily constitute prior art.

[0003] With the promotion and application of new energy vehicles, the safety of new energy vehicles during charging has also received more and more attention. At present, in order to improve the safety of new energy vehicle charging, the existing technology mostly uses measures such as real-time collection of current changes and voltage changes during the charging process and battery charging management to ensure charging safety. However, these measures are based on the data of electrical variables during the charging process, and the effectiveness of their early warning depends on the statistical analysis and calculation of various electrical variable data. The complexity of program calculations and the extremely limited time to solve abnormal electrical variables determine that in practice, although most of them can play a warning effect, the harm has already occurred.

[0004] In practice, the potential safety hazards of charging new energy vehicles often occur at the connection between the charging gun and the charging pile. When the connection is not good, if charging is in progress, the high current during charging will cause vibration at the connection between the charging gun and the charging pile, further leading to poor contact between the two, forming a vicious cycle. When the poor contact reaches a certain level, the first manifestation is heating at the connection between the two. Secondly, the resistance of the charging line at the connection between the two changes due to poor contact, causing current fluctuations. At this time, the above-mentioned early warning measures based on the data of electrical variables during the charging process will be detected and early warnings will be issued.

[0005] In view of this, it is necessary to provide a new energy vehicle charging safety warning device, which can play the role of charging safety warning before the current changes, so as to control the hazards before they occur. Summary of the invention

[0006] Based on this, in response to the above technical problems, the present application provides a new energy vehicle charging safety warning device.

[0007] The technical solution adopted by this application to solve the problems existing in the prior art is: This application proposes a new energy vehicle charging safety warning device, including: A first clamping member is fixedly connected to the first charging port, comprising a clamping portion fixedly sleeved outside the first charging port, and a clamping port is provided outside the clamping portion; A second clamping member, fixedly sleeved outside the second charging port; The detection mechanism is arranged on the second clamping member, and the detection mechanism includes a detection plate, and the lower part of the middle of the detection plate is hinged to the second clamping member; a pressure head matching the bayonet is fixedly provided at one end of the detection plate protruding out of the second clamping member, and a pressure sensor is provided at the bottom of the other end of the detection plate, and the pressure sensor is fixedly arranged on the second clamping member and electrically connected to the control device; The control device is used to receive the pressure value of the pressure sensor and issue a safety warning message when the pressure value exceeds a set pressure threshold.

[0008] Preferably, the second clamping member comprises a second fixing portion, the second fixing portion is provided with a mounting groove, and a detection mechanism is provided in the mounting groove.

[0009] Preferably, the top and bottom of the second fixing portion are provided with mounting grooves, and each mounting groove is provided with a detection mechanism; The clamping portion is provided with bayonet holes corresponding to the number of the detection mechanisms.

[0010] Preferably, the detection mechanism comprises two parallel guide plates, a bearing plate is slidably arranged between the two guide plates, a second compression spring is arranged at the bottom of the bearing plate, and a pressure sensor is fixedly arranged between the second compression spring and the bottom of the mounting groove; Two slide rails are fixedly provided on the top of the load-bearing plate. The two slide rails are arranged in parallel and are both in an inverted L-shaped structure. A slide cavity for the movable plate to slide is formed between the two slide rails. The movable plate is hinged to the end of the detection plate; A limiting strip located above the bearing plate is fixedly provided on the top of the two guide plates.

[0011] Preferably, a connecting plate is fixedly provided at one end of the detection plate which is different from the pressure head, and connecting shafts are fixedly provided at both ends of the connecting plate; Two connecting blocks are provided on the top of the movable plate, and the two connecting blocks are rotatably connected to the two connecting shafts respectively; A detection plate opening matching the connecting plate is provided on the guide plate below the connecting plate.

[0012] Preferably, a second fixed cavity for passing the second charging port is formed in the middle of the second fixed portion; the rear end of the second charging port is fixedly connected to the second sealing seat, and the second sealing seat is fixed in the second fixed cavity; and a second charging port handle is fixedly provided at the rear end of the second sealing seat.

[0013] Preferably, the first clamping member comprises a first fixing portion and a clamping portion connected together, and a first fixing cavity is formed between the first fixing portion and the clamping portion; The clamping part is provided with a plurality of sliding slots connecting the inside and outside of the clamping part, an inner moving part is slidably arranged in the first fixed cavity, the inner moving part is fixedly connected to the outer moving part through a connecting strip, and the outer moving part is slidably sleeved outside the clamping part; A telescopic hose is provided between the outer movable portion and the first fixed portion; A fixing piece is fixedly provided on the first fixing portion and located in the first fixing cavity, and a first compression spring is provided between the fixing piece and the inner moving portion.

[0014] Preferably, the first charging port includes a first charging head matched with the second charging head, the rear end of the first charging head is fixedly connected to the first sealing seat, and the first sealing seat is fixedly arranged inside the first fixing part; the first charging head is electrically connected to the first charging port connecting line through the first sealing seat; The first charging port connecting wire is coated with an insulating jacket.

[0015] Preferably, a guide rod is provided inside the first compression spring, one end of the guide rod is fixedly connected to the inner moving part, and the other end of the guide rod is slidably connected to the fixing member; The first sealing seat is provided with a notch outside for passing the guide rod.

[0016] Preferably, the control device is fixedly arranged in a protection box, and the protection box is fixedly arranged on the second fixing part; The set pressure threshold change amount includes an upper set pressure threshold change amount and a lower set pressure threshold change amount; The control device is used for: When the top pressure value detected by the pressure sensor at the top of the second fixing part increases and exceeds the upper set pressure threshold change amount, and the bottom pressure value detected by the pressure sensor at the bottom of the second fixing part increases and exceeds the lower set pressure threshold change amount, the control device controls the alarm module to issue a safety warning message of a loose charging connection; When the top pressure value detected by the pressure sensor at the top of the second fixed part increases / decreases and exceeds the upper set pressure threshold change, and the bottom pressure value detected by the pressure sensor at the bottom of the second fixed part decreases / increases and exceeds the lower set pressure threshold change, the control device controls the alarm module to issue a safety warning message of excessive charging vibration.

[0017] Compared with the prior art, the beneficial effects of this application are: 1. It plays the role of charging safety warning before the current changes, and controls the harm before it happens.

[0018] 2. Easy to use, intuitive warning.

[0019] 3. There is no need to collect statistics on the data of electrical variables during the charging process, and there is no need to make precise analysis of various electrical variable data. During charging, alarm information can be issued in time according to the vibration conditions during charging to reduce safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings in the specification, which constitute a part of the present application, are used to provide further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0021] Figure 1 This is a schematic diagram of the overall structure of a new energy vehicle charging safety warning device in this application. Figure 2 for Figure 1 The overall structural diagram of the second clamping member is shown in FIG. Figure 3 for Figure 2 Schematic diagram of the internal cross-sectional structure of the second clamping member, Figure 4 for Figure 2 Schematic diagram of the internal cross-section structure of the detection mechanism. Figure 5 for Figure 4 A partial enlarged view of area A in the middle. Figure 6 This is a schematic diagram of the overall structure of a first charging port and a first clamping member of a new energy vehicle charging safety warning device of the present application, Figure 7 for Figure 6 The overall structure diagram of the first charging port in the figure. Figure 8 for Figure 6 Schematic diagram of the overall structure of the first clamping member, Fig. 9 for Figure 8 Schematic diagram of the internal cross-sectional structure of the first clamping member.

[0022] In the figure: 1. First charging port connecting wire, 10. First sealing seat, 11. First charging head, 12. Insulating jacket, 13. Notch, 2. Second charging port handle, 20. Second charging port, 3. first clamping member, 30. first fixing portion, 31. clamping portion, 32. inner moving portion, 33. outer moving portion, 34. connecting strip, 35. telescopic hose, 36. guide rod, 37. first compression spring, 38. fixing member, 39. sliding joint, 4. second clamping member, 40. second fixing portion, 41. mounting groove, 42. adhesive strip, 43. Detection mechanism, 430. Detection plate, 431. Pressing head, 432. Connecting piece, 433. Connecting shaft, 434. Connecting plate, 435. Pressing part, 44. The second fixed cavity, 45, movable plate, 450, connecting block, 46, load-bearing plate, 460, slide rail, 47. second compression spring, 48. pressure sensor, 49. guide plate, 490. limit strip, 491. detection plate opening, 5. Protection box, 6. First fixing cavity. DETAILED DESCRIPTION

[0023] The present application is further described below in conjunction with the accompanying drawings and embodiments.

[0024] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0025] In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present disclosure, and do not specifically refer to any part or element in the present disclosure and should not be understood as limitations on the present disclosure.

[0026] Figure 1 This is a schematic diagram of the overall structure of a new energy vehicle charging safety warning device of the present application. The new energy vehicle charging safety warning device of the present application includes: The first clamping member 3 is fixedly connected to the first charging port, and includes a clamping portion 31 fixedly sleeved outside the first charging port, and a bayonet 310 is provided outside the clamping portion 31; The second clamping member 4 is fixedly mounted on the outside of the second charging port 20. Figure 2 The second clamping member 4 includes a second fixing portion 40, a mounting groove 41 is provided on the second fixing portion 40, and a detection mechanism 43 is provided in the mounting groove 41; The detection mechanism 43 is provided on the second clamping member 4, referring to Figure 2 , Figure 3 , Figure 4 and Figure 5 The detection mechanism 43 includes a detection plate 430, and the lower part of the middle of the detection plate 430 is hinged to the second clamping member 4; a pressure head 431 that cooperates with the bayonet 310 is fixedly provided at one end of the detection plate 430 protruding out of the second clamping member 4, and a pressure sensor 48 is provided at the bottom of the other end of the detection plate 430. The pressure sensor 48 is fixedly arranged on the second clamping member 4 and is electrically connected to the control device; The control device is used to receive the pressure value of the pressure sensor 48 and issue a safety warning message when the pressure value exceeds the set pressure threshold change.

[0027] In some embodiments, the second fixing portion 40 is provided with mounting grooves 41 at the top and bottom, and each mounting groove 41 is provided with a detection mechanism 43; the clamping portion 31 is provided with bayonet holes 310 corresponding to the number of the detection mechanisms 43, Fig. 9 In some embodiments, the bayonet 310 is an annular groove formed on the outer wall of the clamping portion 31 .

[0028] In some embodiments, reference Figure 3 and Figure 4 The detection mechanism 43 includes two parallel guide plates 49, a bearing plate 46 is slidably arranged between the two guide plates 49, a second compression spring 47 is arranged at the bottom of the bearing plate 46, and a pressure sensor 48 is fixedly arranged between the second compression spring 47 and the bottom of the mounting groove 41; two slide rails 460 are fixedly arranged at the top of the bearing plate 46, the two slide rails 460 are arranged in parallel and are both inverted L-shaped structures, and a sliding cavity for the movable plate 45 to slide is formed between the two slide rails 460; the movable plate 45 is hinged to the end of the detection plate 430; a limit bar 490 located above the bearing plate 46 is fixedly arranged at the top of the two guide plates 49. A connecting plate 434 is fixedly arranged at one end of the detection plate 430 different from the pressure head 431, and connecting shafts are fixedly arranged at both ends of the connecting plate 434; two connecting blocks 450 are arranged at the top of the movable plate 45, and the two connecting blocks 450 are rotatably connected to the two connecting shafts respectively; a detection plate opening 491 matching the connecting plate 434 is opened on the guide plate 49 located below the connecting plate 434. The guide plate 49 is arranged perpendicular to the slide rail 460 .

[0029] In some embodiments, a pressing portion 435 is provided on the top of the connecting plate 434; connecting members 432 are fixedly provided at both ends of the middle part of the detection plate 430, and a detection axis is provided between the two connecting members 432. The detection axis is rotatably provided on the detection block fixedly connected to the second clamping member 4, thereby realizing the hinge connection between the detection plate 430 and the second clamping member 4.

[0030] In some embodiments, reference Figure 2 as well as Figure 1 A second fixed cavity 44 for passing the second charging port 20 is formed in the middle of the second fixed portion 40; the rear end of the second charging port 20 is fixedly connected to the second sealing seat, and the second sealing seat is fixedly arranged in the second fixed cavity 44; a second charging port handle 2 is fixedly arranged at the rear end of the second sealing seat; a second charging head is arranged inside the second charging port 20; the second charging head is electrically connected to the second charging port connecting line through the second sealing seat; the second charging port connecting line is arranged in the second charging port handle 2.

[0031] In some embodiments, reference Figure 8 as well as Fig. 9The first clamping member 3 comprises a first fixed portion 30 and a clamping portion 31 connected together, and a first fixed cavity 6 is formed between the first fixed portion 30 and the clamping portion 31; the clamping portion 31 is provided with a plurality of sliding slits 39 connecting the inside and outside of the clamping portion 31, an inner moving portion 32 is slidably arranged in the first fixed cavity 6, the inner moving portion 32 is fixedly connected to the outer moving portion 33 through a connecting strip 34, and the outer moving portion 33 is slidably sleeved outside the clamping portion 31; a telescopic hose 35 is arranged between the outer moving portion 33 and the first fixed portion 30; a fixing member 38 is fixedly arranged in the first fixed cavity 6 on the first fixed portion 30, and a first compression spring 37 is arranged between the fixing member 38 and the inner moving portion 32. A guide rod 36 is arranged inside the first compression spring 37, one end of the guide rod 36 is fixedly connected to the inner moving portion 32, and the other end is slidably connected to the fixing member 38; the first sealing seat 10 is provided with a notch 13 for passing the guide rod 36.

[0032] refer to Figure 6 as well as Figure 7 The first charging port includes a first charging head 11 that cooperates with the second charging head. The rear end of the first charging head 11 is fixedly connected to the first sealing seat 10, and the first sealing seat 10 is fixedly arranged inside the first fixing part 30; the first charging head 11 is electrically connected to the first charging port connecting line 1 through the first sealing seat 10; the first charging port connecting line 1 is provided with an insulating jacket 12.

[0033] In some embodiments, reference Figure 1 , the control device is fixedly arranged in the protection box 5, and the protection box is fixedly arranged on the second fixing part 40; the set pressure threshold change amount includes an upper set pressure threshold change amount and a lower set pressure threshold change amount; In some embodiments, an adhesive strip 42 is fixedly provided on the second fixing portion 40 at the outer periphery of the mounting groove 41, and an elastic plastic film is bonded to the adhesive strip 42; the elastic plastic film serves to protect the bottom detection mechanism 43, and at the same time, because of its elasticity, it does not affect the rotation of the detection plate 430.

[0034] The control device is used to: When the top pressure value detected by the pressure sensor 48 at the top of the second fixing part 40 increases and exceeds the upper set pressure threshold change amount, and the bottom pressure value detected by the pressure sensor 48 at the bottom of the second fixing part 40 increases and exceeds the lower set pressure threshold change amount, the control device controls the alarm module to issue a safety warning message of a loose charging connection; When the top pressure value detected by the pressure sensor 48 at the top of the second fixing part 40 increases / decreases and exceeds the upper set pressure threshold change amount, and the bottom pressure value detected by the pressure sensor 48 at the bottom of the second fixing part 40 decreases / increases and exceeds the lower set pressure threshold change amount, the control device controls the alarm module to issue a safety warning message of excessive charging vibration; Specifically, when the top pressure value detected by the pressure sensor 48 at the top of the second fixing part 40 increases and exceeds the upper set pressure threshold change amount, and the bottom pressure value detected by the pressure sensor 48 at the bottom of the second fixing part 40 decreases and exceeds the lower set pressure threshold change amount, the control device controls the alarm module to issue a safety warning message of excessive charging vibration; When the top pressure value detected by the pressure sensor 48 at the top of the second fixed part 40 decreases and exceeds the upper set pressure threshold change, and the bottom pressure value detected by the pressure sensor 48 at the bottom of the second fixed part 40 increases and exceeds the lower set pressure threshold change, the control device controls the alarm module to issue a safety warning message of excessive charging vibration.

[0035] Working principle: refer to Figure 8 and Fig. 9 After the first charging port and the second charging port 20 are plugged in, the second charging head is inserted into the first charging head 11. During the insertion process, the second charging port 20 presses against the inner moving part 32 so that the inner moving part 32 moves inward. During this process, the first compression spring 37 is compressed and the first compression spring 37 applies a pressure to the inner moving part 32. The inner moving part 32 moves, driving the outer moving part 33 to move, and the telescopic hose 35 contracts, thereby causing the bayonet 310 to leak out; When the second charging head is inserted into the first charging head 11, the bayonet 310 leaks out. Figure 3 The detection plate 430 drives the pressure head 431 to advance into the bayonet 310 .

[0036] In this process, the first compression spring 37 applies pressure to the inner movable portion 32 so that when the pressing head 431 is buckled on the bayonet 310, the pressing head 431 is subjected to a force in the opposite direction through the inner movable portion 32, thereby tightening the connection between the pressing head 431 and the bayonet 310.

[0037] During the charging process, the first charging port and the second charging port 20 will be relatively displaced due to large current or poor contact between the second charging head and the first charging head 11; The above relative displacement includes a horizontal displacement parallel to the axial direction of the first charging head 11 and the second charging head and a vertical displacement perpendicular to the above horizontal displacement direction; when the horizontal displacement changes, as long as the change is not large, the first charging head 11 and the second charging head can still maintain a large contact area, and there will not be much impact; when the vertical displacement changes, the central axes of the first charging head 11 and the second charging head are different. As a result, the contact area between the two is reduced, resulting in poor contact. When the poor contact reaches a certain level, the first manifestation is the heat at the connection between the two. Secondly, due to the poor contact, the resistance of the charging line at the connection between the two changes, thereby causing current fluctuations. A new energy vehicle charging safety warning device in the present application is based on the above reasons. When the vertical displacement of the first charging port and the second charging port 20 changes, refer to Figure 1 , Figure 4 and Figure 5 , the detection plate 430 is bound to slightly flip and cannot remain horizontal. At this time, the detection plate 430 rotates, and the connecting plate 434 is lifted or lowered; When the top pressure value detected by the pressure sensor 48 at the top of the second fixing part 40 increases and exceeds the upper set pressure threshold change amount, and the bottom pressure value detected by the pressure sensor 48 at the bottom of the second fixing part 40 increases and exceeds the lower set pressure threshold change amount, the control device controls the alarm module to issue a safety warning message of a loose charging connection; When the top pressure value detected by the pressure sensor 48 at the top of the second fixing part 40 increases / decreases and exceeds the upper set pressure threshold change amount, and the bottom pressure value detected by the pressure sensor 48 at the bottom of the second fixing part 40 decreases / increases and exceeds the lower set pressure threshold change amount, the control device controls the alarm module to issue a safety warning message of excessive charging vibration; Specifically, when the top pressure value detected by the pressure sensor 48 at the top of the second fixing part 40 increases and exceeds the upper set pressure threshold change amount, and the bottom pressure value detected by the pressure sensor 48 at the bottom of the second fixing part 40 decreases and exceeds the lower set pressure threshold change amount, the control device controls the alarm module to issue a safety warning message of excessive charging vibration; When the top pressure value detected by the pressure sensor 48 at the top of the second fixed part 40 decreases and exceeds the upper set pressure threshold change, and the bottom pressure value detected by the pressure sensor 48 at the bottom of the second fixed part 40 increases and exceeds the lower set pressure threshold change, the control device controls the alarm module to issue a safety warning message of excessive charging vibration.

[0038] The alarm module is electrically connected to the control device. The alarm module can be selected as an audible and visual alarm or an indicator light. When the alarm module issues a safety warning message that the charging vibration is too large, it means that the on-site personnel need to check whether the second charging head is inserted into the first charging head 11. Whether the pressure head 431 is completely in the bayonet 310 after the second charging head is inserted into the first charging head 11; when the alarm module issues a safety warning message that the charging vibration is too large, it means that the second charging head and the first charging head 11 are not securely connected, and the on-site personnel need to replace the first charging port and the second charging port 20 used for charging connection.

[0039] When the second charging head and the first charging head 11 need to be separated, the pressing parts 435 at the upper and lower ends can be pressed to separate the two.

[0040] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0041] Although the above describes the specific implementation methods of the present application in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present application. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present application, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the present application.

Claims

1. A new energy vehicle charging safety warning device, characterized in that: include: A first clamping member (3) is fixedly connected to the first charging port, comprising a clamping portion (31) fixedly sleeved outside the first charging port, and a clamping port (310) is provided outside the clamping portion (31); A second clamping member (4) fixedly sleeved outside the second charging port (20); A detection mechanism (43) is arranged on the second clamping member (4), the detection mechanism (43) comprising a detection plate (430), the lower part of the middle of the detection plate (430) being hinged to the second clamping member (4); a pressure head (431) cooperating with the bayonet (310) is fixedly provided at one end of the detection plate (430) protruding out of the second clamping member (4), and a pressure sensor (48) is provided at the bottom of the other end of the detection plate (430); the pressure sensor (48) is fixedly arranged on the second clamping member (4) and is electrically connected to the control device; The control device is used to receive the pressure value of the pressure sensor (48) and issue a safety warning message when the pressure value exceeds a set pressure threshold.

2. A new energy vehicle charging safety warning device according to claim 1, characterized in that: The second clamping member (4) comprises a second fixing portion (40), the second fixing portion (40) being provided with a mounting groove (41), and a detection mechanism (43) being provided in the mounting groove (41).

3. A new energy vehicle charging safety warning device according to claim 2, characterized in that: The top and bottom of the second fixing portion (40) are both provided with mounting grooves (41), and each mounting groove (41) is provided with a detection mechanism (43); The clamping portion (31) is provided with a number of bayonet holes (310) corresponding to the number of detection mechanisms (43).

4. A new energy vehicle charging safety warning device according to claim 2 or 3, characterized in that: The detection mechanism (43) comprises two parallel guide plates (49), a bearing plate (46) is slidably disposed between the two guide plates (49), a second compression spring (47) is disposed at the bottom of the bearing plate (46), and a pressure sensor (48) is fixedly disposed between the second compression spring (47) and the bottom of the mounting groove (41); Two slide rails (460) are fixedly provided on the top of the bearing plate (46); the two slide rails (460) are arranged in parallel and both have an inverted L-shaped structure; a slide cavity for the movable plate (45) to slide is formed between the two slide rails (460); The movable plate (45) is hingedly connected to the end of the detection plate (430); A limiting strip (490) located above the bearing plate (46) is fixedly provided on the top of the two guide plates (49).

5. A new energy vehicle charging safety warning device according to claim 4, characterized in that: A connecting plate (434) is fixedly provided at one end of the detection plate (430) which is different from the pressure head (431), and connecting shafts are fixedly provided at both ends of the connecting plate (434); Two connecting blocks (450) are provided on the top of the movable plate (45), and the two connecting blocks (450) are rotatably connected to the two connecting shafts respectively; A detection plate opening (491) matching the connection plate (434) is provided on the guide plate (49) located below the connection plate (434).

6. A new energy vehicle charging safety warning device according to claim 4, characterized in that: A second fixing cavity (44) for passing the second charging port (20) is formed in the middle of the second fixing portion (40); the rear end of the second charging port (20) is fixedly connected to the second sealing seat, and the second sealing seat is fixedly arranged in the second fixing cavity (44); and a second charging port handle (2) is fixedly arranged at the rear end of the second sealing seat.

7. A new energy vehicle charging safety warning device according to claim 1, characterized in that: The first clamping member (3) comprises a first fixing portion (30) and a clamping portion (31) connected together, and a first fixing cavity (6) is formed between the first fixing portion (30) and the clamping portion (31); The clamping portion (31) is provided with a plurality of sliding slots (39) connecting the inside and outside of the clamping portion (31); an inner movable portion (32) is slidably provided in the first fixed cavity (6); the inner movable portion (32) is fixedly connected to the outer movable portion (33) via a connecting strip (34); and the outer movable portion (33) is slidably sleeved outside the clamping portion (31); A telescopic hose (35) is provided between the outer movable portion (33) and the first fixed portion (30); A fixing piece (38) is fixedly provided on the first fixing portion (30) and located in the first fixing cavity (6), and a first compression spring (37) is provided between the fixing piece (38) and the inner moving portion (32).

8. A new energy vehicle charging safety warning device according to claim 7, characterized in that: The first charging port comprises a first charging head (11) that cooperates with a second charging head, the rear end of the first charging head (11) being fixedly connected to a first sealing seat (10), and the first sealing seat (10) being fixedly arranged inside the first fixing portion (30); the first charging head (11) is electrically connected to the first charging port connection line (1) via the first sealing seat (10); The outer jacket of the first charging port connection cable (1) is provided with an insulating outer jacket (12).

9. A new energy vehicle charging safety warning device according to claim 7, characterized in that: A guide rod (36) is provided inside the first compression spring (37), one end of the guide rod (36) is fixedly connected to the inner moving part (32), and the other end is slidably connected to the fixing member (38); The first sealing seat (10) is provided with a recess (13) on the outside for passing the guide rod (36).

10. A new energy vehicle charging safety warning device according to claim 3, characterized in that: The control device is fixedly arranged in the protection box (5), and the protection box is fixedly arranged on the second fixing part (40); The set pressure threshold change amount includes an upper set pressure threshold change amount and a lower set pressure threshold change amount; The control device is used to: When the top pressure value detected by the pressure sensor (48) at the top of the second fixing part (40) increases and exceeds the upper set pressure threshold change amount, and the bottom pressure value detected by the pressure sensor (48) at the bottom of the second fixing part (40) increases and exceeds the lower set pressure threshold change amount, the control device controls the alarm module to issue a safety warning message indicating that the charging connection is not secure; When the top pressure value detected by the pressure sensor (48) at the top of the second fixing portion (40) increases / decreases and exceeds the upper set pressure threshold change amount, and the bottom pressure value detected by the pressure sensor (48) at the bottom of the second fixing portion (40) decreases / increases and exceeds the lower set pressure threshold change amount, the control device controls the alarm module to issue a safety warning message of excessive charging vibration.

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