Novel national standard low-power direct-current automobile charging plug

Abstract

The invention relates to the technical field of electric automobile charging, in particular to a novel national standard low-power direct-current automobile charging plug which comprises a direct-current automobile charging plug body, the direct-current automobile charging plug body comprises a charging gun body used for charging, and the charging gun body comprises a charging insertion assembly arranged at the front end of the charging gun body. The charging inserting assembly is provided with a charging fixing mold in a matched mode and further comprises a charging gun shell, a connection feedback assembly and a signal feedback assembly are further arranged in the charging gun body, a connection handle is arranged at the rear end of the charging gun body in a matched mode, and a wire inserting hole is formed in the tail end of the connection handle. The invention provides a novel national standard low-power direct-current automobile charging plug. The design of the direct-current automobile charging plug has remarkable beneficial effects in the aspects of safety performance, connection stability and reliability, waterproof and heat dissipation performance, user experience, maintenance and the like.

Description

Technical Field

[0001] The invention relates to the technical field of electric vehicle charging, and in particular to a novel national standard low-power direct current vehicle charging plug. Background Art

[0002] With the popularity of electric vehicles, the construction and improvement of charging facilities has become an important part of promoting the development of the new energy vehicle industry. However, traditional car charging plugs have deficiencies in many aspects, which directly affect the safety and reliability of the charging process and become a problem that needs to be solved urgently.

[0003] First of all, waterproof performance is a key factor that cannot be ignored in charging plugs. Electric vehicles are charged in a variety of environments, including outdoor parking lots and rainy days, which requires charging plugs to have excellent waterproof performance to prevent moisture intrusion from causing safety hazards such as short circuits or electric shocks. However, traditional charging plugs often have defects in waterproof design and are difficult to cope with charging needs in severe weather conditions.

[0004] Secondly, shockproof performance is also an issue that must be considered for charging plugs. Electric vehicles will vibrate during driving, and the charging plug, as a component that connects the vehicle to the charging device, must be able to withstand this vibration without affecting the connection quality. Traditional charging plugs are often not sophisticated enough in shockproof design, and are prone to loosening or poor contact after long-term use, affecting charging efficiency and safety.

[0005] In addition, wear resistance is also an important indicator for measuring the quality of charging plugs. Charging plugs need to be frequently plugged in and out during use, which requires them to have good wear resistance to extend their service life and reduce safety hazards caused by wear. However, traditional charging plugs often find it difficult to balance wear resistance and other performance requirements in terms of material selection and structural design.

[0006] Finally, the connection feedback mechanism is of great significance to improving the safety and reliability of the charging process. Traditional charging plugs often lack an effective connection feedback mechanism, which cannot monitor the connection status in real time and promptly alarm when an abnormality occurs. This may cause users to start charging when the connection is not fully connected or the connection is not firm, causing safety hazards.

[0007] Therefore, it is particularly important to develop a new charging plug with excellent waterproof performance, stable connection feedback and good heat dissipation effect. Summary of the invention

[0008] In order to solve some problems existing in the above-mentioned prior art, the present invention provides a new national standard low-power DC car charging plug to solve the deficiencies existing in the prior art.

[0009] To achieve the above-mentioned purpose, the present invention provides a new national standard low-power DC vehicle charging plug, including a DC vehicle charging plug, the DC vehicle charging plug includes a charging gun body for charging, the charging gun body includes a charging insertion assembly arranged at the front end of the charging gun body, the charging insertion assembly is cooperated with a charging fixing mold, the charging insertion assembly also includes a charging gun housing, a connection feedback assembly and a signal feedback assembly are also arranged inside the charging gun body, the rear end of the charging gun body is cooperated with a connecting handle, and the end of the connecting handle is provided with a wire insertion hole.

[0010] As a further improvement of the present invention, in order to ensure the stability and reliability of current transmission during the charging process and enhance the electrical safety during the charging process, the charging insertion assembly includes a charging socket end, a terminal fixing block is arranged inside the charging socket end, the terminal fixing block is arranged inside the charging gun housing, and the terminal fixing block is provided with several groups of charging terminals, main terminal insertion ports are arranged on both sides of the terminal fixing block, auxiliary terminal insertion ports are arranged at the upper and lower positions of the terminal fixing block, and a grounding insertion port is arranged at the center position of the terminal fixing block.

[0011] As a further improvement of the present invention, in order to effectively prevent moisture intrusion, ensure the normal operation of the charging gun in various environments, and prevent safety problems caused by overheating, a waterproof sealed cavity is arranged inside the charging gun housing. The waterproof sealed cavity adopts a double-layer sealing structure design. The inner layer material of the waterproof sealed cavity is high-strength insulating plastic, and the outer layer of the waterproof sealed cavity is covered with elastic shock-absorbing material. The surface of the charging gun housing is also designed with a fine heat dissipation texture.

[0012] As a further improvement of the present invention, in order to ensure a stable connection between the charging gun and the charging interface, and at the same time make the installation and disassembly of the charging gun more convenient, the connection feedback component includes a press-connecting plate, which adopts an elastic structure design, and the signal feedback component is arranged below the middle of the press-connecting plate, and a lock hook is arranged at the other end of the press-connecting plate, and a limiting protrusion is arranged below the end of the press-connecting plate, and the press-connecting plate is cooperated with an electromagnetic lock, and the surface of the press-connecting plate is covered with anti-slip and wear-resistant material.

[0013] As a further improvement of the present invention, in order to ensure a reasonable layout of components, facilitate maintenance and prevent damage due to vibration, the connection feedback component also includes an electrical appliance placement cavity, and a plurality of groups of electronic components are arranged inside the electrical appliance placement cavity. A limit spring is arranged at the rear end of the electrical appliance placement cavity.

[0014] As a further improvement of the present invention, in order to be able to monitor the charging status in real time and feed back to the control system, the reliability and stability of the charging process are further improved. The signal feedback component includes a signal switch, and the signal switch of the signal feedback component is electrically connected to the connection feedback component. A connecting rib is provided on the top of the signal switch, and a rotating shaft is provided on one side of the signal switch. The connecting rib is provided in cooperation with the rotating shaft, and the connecting rib is connected to the press connecting plate.

[0015] As a further improvement of the present invention, in order to ensure the normal operation of the charging gun in various environments and to ensure the safe and reliable connection between internal components, a multi-level waterproof texture structure is provided inside the charging gun shell, and a waterproof mounting hole is provided inside the charging gun shell in conjunction with the waterproof texture structure. The waterproof mounting hole is provided with a waterproof mounting block, and the waterproof mounting block is interspersed with wiring holes. The waterproof mounting block is provided in conjunction with a connection feedback component and a signal feedback component, and a multi-layer waterproof sealing ring is provided at the connection between the charging gun shell and the charging fixed mold.

[0016] As a further improvement of the present invention, in order to ensure the precise guidance of the charging terminal during the insertion process, prevent misalignment or damage, and improve the stability and reliability of the connection of the charging terminal, a guide rail is provided inside the terminal fixing block, and the guide rail is cooperated with a positioning pin. The guide rail can ensure that the charging terminal moves along the correct path during the insertion process, and the positioning pin is used to accurately fix the position of the charging terminal.

[0017] When the present invention is working, the charging gun is first assembled to ensure that all parts (such as the charging gun housing, charging insertion component, terminal fixing block, charging terminal, connection feedback component, signal feedback component, waterproof sealing cavity, electrical appliance placement cavity, electromagnetic lock, etc.) are complete and undamaged; the terminal fixing block is placed inside the charging gun housing and ensured to be in the correct position, and several groups of charging terminals are inserted into the terminal fixing block to ensure that the charging terminals move along the guide track during the insertion process, and the position is accurately fixed with positioning pins; then the charging fixing mold and the charging insertion component are spliced ​​and fixed with bolts to achieve connection.

[0018] The waterproof mounting block is pressed into the waterproof mounting hole, and the signal feedback component is placed on the waterproof texture structure inside the charging gun housing. The signal feedback component is located on one side of the waterproof mounting block, and the connection feedback component is placed on the other side of the waterproof mounting block. The wire is led out from one end of the connection feedback component and passed through the connection hole on the connection feedback component, and then connected to the charging terminal of the charging plug-in component. A plurality of groups of electronic components are arranged inside the electrical placement cavity of the connection feedback component, and a limit spring is arranged at the rear end. A press connection plate is installed above the signal feedback component and the connection feedback component, and the lower end of the press connection plate is connected to the limit spring.

[0019] When using the charging gun, the user aligns the charging plug with the charging interface of the car, and inserts the charging insertion component of the charging plug (charging socket end, terminal fixing block and charging terminal) into the charging interface of the car. When the charging plug is fully inserted, the pressing connection plate is subjected to pressure and elastically deforms, triggering the connection feedback component, and activating the electromagnetic lock to ensure a firm connection between the charging plug and the charging interface of the car. The signal switch of the signal feedback component is triggered, and connected to the pressing connection plate through the connecting ribs and the rotating shaft, and the connection status signal is transmitted to the charging control system of the car. After receiving the connection status signal, the charging end starts to supply power to the charging plug, and the current flows into the battery system of the car through the charging terminal for charging. During the charging process, the fine heat dissipation texture on the surface of the charging gun shell helps to dissipate heat and keep the temperature of the charging plug within a safe range.

[0020] The beneficial effects of the present invention are as follows: the present invention provides a new national standard low-power DC vehicle charging plug, and the beneficial effects of the DC vehicle charging plug are specifically embodied in the following aspects: The design of the new national standard low-power DC vehicle charging plug brings many significant beneficial effects, which are summarized as follows: Stable connection and precise positioning: The terminal fixing block in the charging insertion assembly and its internal guide rail and positioning pin design ensure that the charging terminal can move along the correct path during the insertion process and accurately fix its position; this design not only improves the charging efficiency, but also enhances the safety and stability during the charging process.

[0021] The guide track and positioning pin design inside the terminal fixing block ensure the correct path and precise fixed position of the charging terminal during the insertion process, avoiding safety hazards caused by loose or misaligned terminals.

[0022] Excellent waterproof performance The interior of the charging gun shell adopts a double-layer sealing structure design, with the inner layer being high-strength insulating plastic and the outer layer covered with elastic shock-absorbing material; this design not only improves the waterproof performance, but also enhances the insulation effect and shock resistance, effectively preventing the intrusion of moisture and dust, and ensuring electrical safety during the charging process.

[0023] A multi-layer waterproof sealing ring is set at the connection between the charging gun housing and the charging fixed mold to further improve the overall waterproof sealing performance and ensure safe use under different environmental conditions.

[0024] Improved connection stability and reliability: The elastic pressing connection plate in the connection feedback component is combined with the electromagnetic lock, making the plugging and unplugging operations of the charging plug more convenient and labor-saving; at the same time, the setting of the lock hook and the limiting protrusion also improves the stability of the connection and prevents accidental falling off during charging.

[0025] The signal feedback component is electrically connected to the connection feedback component through a signal switch, and can monitor the charging status in real time and feed back the information to the control system or the user; this instant feedback mechanism improves the transparency and controllability of the charging process, and brings a better user experience.

[0026] Cooling performance optimization: The fine heat dissipation texture designed on the surface of the charging gun shell effectively improves the heat dissipation efficiency during the charging process and reduces performance degradation or safety hazards caused by overheating.

[0027] Improved user experience: The design of the connecting handle is convenient for users to hold and operate, and the setting of the wire socket facilitates the connection of the power cord and improves the user's convenience.

[0028] The covering of anti-skid and wear-resistant material not only improves the durability of the press-connecting plate, but also improves the comfort and stability during operation.

[0029] Easy maintenance and servicing: The electrical appliance placement cavity and detachable component design inside the charging gun body make the charging plug have certain modular characteristics; this design facilitates subsequent maintenance and upgrades; The design of the waterproof sealing cavity and waterproof mounting block also makes it easier to disassemble and replace parts of the charging plug, which helps to extend the service life of the charging plug; In summary, the design of the new national standard low-power DC vehicle charging plug has brought significant beneficial effects in terms of safety performance, connection stability and reliability, waterproof and heat dissipation performance, user experience, and maintenance and care; these designs not only improve the performance and safety of the charging plug, but also provide users with a more convenient, reliable and comfortable charging experience; BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to facilitate the understanding of those skilled in the art, the present invention is further described below with reference to the accompanying drawings: Figure 1 It is a structural diagram of the present invention.

[0031] Figure 2 It is a side structural diagram of the present invention.

[0032] Figure 3 This is the installation structure diagram of the terminal fixing block and the charging terminal.

[0033] Figure 4 This is a structural diagram of the present invention without the pressing connecting plate.

[0034] Figure 5 This is a structural diagram of the charging gun casing.

[0035] Figure 6 This is a side view of the charging gun housing.

[0036] Figure 7 This is a structural diagram of the press connection plate.

[0037] Figure 8 This is a structural diagram of the signal feedback component.

[0038] Fig. 9 A structural diagram of the connected feedback component.

[0039] Among them, 1 charging insertion component, 101 charging socket end, 102 terminal fixing block, 103 charging terminal, 104 main terminal insertion port, 105 secondary terminal insertion port, 106 grounding insertion port, 2 charging fixing mold, 3 charging gun housing, 4 connection feedback component, 401 press connection plate, 402 lock hook, 403 limit protrusion, 404 electromagnetic lock, 405 electrical placement cavity, 406 limit spring, 5 signal feedback component, 501 signal switch, 502 connecting rib, 503 rotating shaft, 6 connecting handle, 7 wire plug hole, 8 waterproof sealing cavity, 9 waterproof texture structure, 10 waterproof mounting hole, 11 waterproof mounting block, 12 wiring hole, 13 waterproof sealing ring, 14 guide rail, 15 positioning pin. DETAILED DESCRIPTION

[0040] In order to enable those skilled in the art to better understand the technical solution in this application, Figure 1-9 The present invention is further described. The following examples are only used to more clearly illustrate the technical solution of the present invention, and are not intended to limit the protection scope of the present invention.

[0041] like Figure 1-9 A new type of national standard low-power DC vehicle charging plug shown in the figure includes a DC vehicle charging plug, and the DC vehicle charging plug includes a charging gun body for charging, and the charging gun body includes a charging insertion component 1 arranged at the front end of the charging gun body, and the charging insertion component 1 is cooperated with a charging fixing mold 2, and the charging insertion component 1 also includes a charging gun housing 3, and a connection feedback component 4 and a signal feedback component 5 are also arranged inside the charging gun body. The rear end of the charging gun body is cooperated with a connecting handle 6, and the end of the connecting handle 6 is provided with a wire insertion hole 7.

[0042] The charging insertion component 1 includes a charging socket end 101, and a terminal fixing block 102 is arranged inside the charging socket end 101. The terminal fixing block 102 is arranged inside the charging gun housing 3. The terminal fixing block 102 is provided with a plurality of groups of charging terminals 103. Main terminal insertion ports 104 are arranged on both sides of the terminal fixing block 102, and auxiliary terminal insertion ports 105 are arranged at the upper and lower positions of the terminal fixing block 102. A grounding insertion port 106 is arranged at the center position of the terminal fixing block 102.

[0043] A waterproof sealed cavity 8 is arranged inside the charging gun housing 3. The waterproof sealed cavity 8 adopts a double-layer sealing structure design. The inner layer material of the waterproof sealed cavity 8 is high-strength insulating plastic, and the outer layer of the waterproof sealed cavity 8 is covered with elastic shock-absorbing material. The surface of the charging gun housing 3 is also designed with a fine heat dissipation texture.

[0044] The connection feedback component 4 includes a push-connection plate 401, which adopts an elastic structure design. The signal feedback component 5 is arranged below the middle of the push-connection plate 401. A lock hook 402 is arranged at the other end of the push-connection plate 401. A limiting protrusion 403 is arranged below the end of the push-connection plate 401. The push-connection plate 401 is cooperated with an electromagnetic lock 404, and the surface of the push-connection plate 401 is covered with anti-slip and wear-resistant material.

[0045] The connection feedback component 4 also includes an electrical appliance placement cavity 405 , wherein a plurality of groups of electronic components are arranged inside the electrical appliance placement cavity 405 , and a limit spring 406 is arranged at the rear end of the electrical appliance placement cavity 405 .

[0046] The signal feedback component 5 includes a signal switch 501, which is electrically connected to the connection feedback component 4. A connecting rib 502 is provided on the top of the signal switch 501. A rotating shaft 503 is provided on one side of the signal switch 501. The connecting rib 502 is provided in cooperation with the rotating shaft 503, and the connecting rib 502 is connected to the pressing connecting plate 401.

[0047] A multi-level waterproof texture structure 9 is provided inside the charging gun housing 3. A waterproof mounting hole 10 is provided inside the charging gun housing 3 in coordination with the waterproof texture structure 9. A waterproof mounting hole 10 is provided in coordination with a waterproof mounting block 11. The waterproof mounting block 11 is interspersed with a wiring hole 12. The waterproof mounting block 11 is provided in coordination with the connection feedback component 4 and the signal feedback component 5. A multi-layer waterproof sealing ring 13 is provided at the connection between the charging gun housing 3 and the charging fixed mold 2.

[0048] The terminal fixing block 102 is provided with a guide track 14 inside, and the guide track 14 is provided with a positioning pin 15 in cooperation. The guide track 14 can ensure that the charging terminal 103 moves along the correct path during the insertion process, and the positioning pin 15 is used to accurately fix the position of the charging terminal 103.

[0049] When the present invention is working, the charging gun is first assembled to ensure that all components such as the charging gun housing 3, the charging insertion component 1, the terminal fixing block 102, the charging terminal 103, the connection feedback component 4, the signal feedback component 5, the waterproof sealing cavity 8, the electrical appliance placement cavity 405, the electromagnetic lock 404, etc. are complete and undamaged; the terminal fixing block 102 is placed inside the charging gun housing 3, and its position is ensured to be correct, and several groups of charging terminals 103 are inserted into the terminal fixing block 102, ensuring that the charging terminals 103 move along the guide rail 14 during the insertion process, and the positioning pin 15 is used to accurately fix the position; then the charging fixing mold 2 is spliced ​​with the charging insertion component 1, and fixed with bolts to achieve connection.

[0050] The waterproof mounting block 11 is pressed into the waterproof mounting hole 10, and the signal feedback component 5 is placed on the waterproof texture structure 9 inside the charging gun housing 3. The signal feedback component 5 is located on one side of the waterproof mounting block 11, and the connection feedback component 4 is placed on the other side of the waterproof mounting block 11. The wire is led out from one end of the connection feedback component 4 and passed through the connection hole 12 on the connection feedback component 4, and then connected to the charging terminal 103 of the charging insertion component 1. The electrical appliance placement cavity 405 of the connection feedback component 4 is provided with multiple groups of electronic components, and a limit spring 406 is provided at the rear end. A press connection plate 401 is installed above the signal feedback component 5 and the connection feedback component 4, and the lower end of the press connection plate 401 is connected to the limit spring 406.

[0051] When using the charging gun, the user aligns the charging plug with the charging interface of the car, and inserts the charging plug component 1, the charging socket end 101, the terminal fixing block 102 and the charging terminal 103 of the charging plug into the charging interface of the car. When the charging plug is fully inserted, the pressing connection plate 401 is subjected to pressure and elastically deforms, triggering the connection feedback component 4, and the electromagnetic lock 404 is activated to ensure a firm connection between the charging plug and the charging interface of the car. The signal switch 501 of the signal feedback component 5 is triggered, and is connected to the pressing connection plate 401 through the connecting rib 502 and the rotating shaft 503, and the connection status signal is transmitted to the charging control system of the car. After receiving the connection status signal, the charging end starts to supply power to the charging plug, and the current flows into the battery system of the car through the charging terminal 103 for charging. During the charging process, the fine heat dissipation texture on the surface of the charging gun housing 3 helps to dissipate heat and keep the temperature of the charging plug within a safe range.

[0052] The present invention is not limited to the above-mentioned embodiments. On the basis of the technical solution disclosed in the present invention, technicians in this field can make some substitutions and deformations to some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present invention.

Claims

1. A new type of national standard low-power DC car charging plug, including a DC car charging plug, characterized in that: The DC vehicle charging plug comprises a charging gun body for charging, the charging gun body comprising a charging insertion assembly (1) arranged at the front end of the charging gun body, the charging insertion assembly (1) being provided with a charging fixing mold (2), the charging insertion assembly (1) also comprising a charging gun housing (3), a connection feedback assembly (4) and a signal feedback assembly (5) being provided inside the charging gun body, the rear end of the charging gun body being provided with a connection handle (6), the end of the connection handle (6) being provided with a wire insertion hole (7).

2. A new national standard low-power DC car charging plug according to claim 1, characterized in that: The charging insertion assembly (1) comprises a charging socket end (101), a terminal fixing block (102) is arranged inside the charging socket end (101), the terminal fixing block (102) is arranged inside the charging gun housing (3), the terminal fixing block (102) is arranged with a plurality of groups of charging terminals (103), main terminal insertion ports (104) are arranged on both sides of the terminal fixing block (102), auxiliary terminal insertion ports (105) are arranged at the upper and lower positions of the terminal fixing block (102), and a grounding insertion port (106) is arranged at the center position of the terminal fixing block (102).

3. A new national standard low-power DC car charging plug according to claim 2, characterized in that: A waterproof sealed cavity (8) is arranged inside the charging gun housing (3), and the waterproof sealed cavity (8) adopts a double-layer sealing structure design. The inner layer material of the waterproof sealed cavity (8) is high-strength insulating plastic, and the outer layer of the waterproof sealed cavity (8) is covered with elastic shock-absorbing material. The surface of the charging gun housing (3) is also designed with a fine heat dissipation texture.

4. A new national standard low-power DC car charging plug according to claim 1, characterized in that: The connection feedback component (4) comprises a push connection plate (401), the push connection plate (401) adopts an elastic structure design, the signal feedback component (5) is arranged below the middle of the push connection plate (401), the other end of the push connection plate (401) is provided with a lock hook (402), a limit protrusion (403) is provided below the end of the push connection plate (401), the push connection plate (401) is provided with an electromagnetic lock (404), and the surface of the push connection plate (401) is covered with anti-slip and wear-resistant material.

5. The novel national standard low-power DC vehicle charging plug according to claim 4 is characterized in that: The connection feedback component (4) further comprises an electrical appliance placement cavity (405), wherein a plurality of groups of electronic components are arranged inside the electrical appliance placement cavity (405), and a limit spring (406) is arranged at the rear end of the electrical appliance placement cavity (405).

6. A new national standard low-power DC car charging plug according to claim 4, characterized in that: The signal feedback component (5) comprises a signal switch (501), the signal switch (501) of the signal feedback component (5) being electrically connected to the connection feedback component (4), a connection rib (502) being provided on the top of the signal switch (501), a rotating shaft (503) being provided on one side of the signal switch (501), the connection rib (502) being provided in cooperation with the rotating shaft (503), and the connection rib (502) being provided in connection with the pressing connection plate (401).

7. The new national standard low-power DC car charging plug according to claim 1 is characterized in that: The charging gun housing (3) is provided with a multi-level waterproof texture structure (9) inside. The charging gun housing (3) is provided with a waterproof mounting hole (10) in cooperation with the waterproof texture structure (9). The waterproof mounting hole (10) is provided with a waterproof mounting block (11) in cooperation. The waterproof mounting block (11) is provided with a wiring hole (12) in between. The waterproof mounting block (11) is provided in cooperation with a connection feedback component (4) and a signal feedback component (5). A multi-layer waterproof sealing ring (13) is provided at the connection between the charging gun housing (3) and the charging fixed mold (2).

8. The new national standard low-power DC vehicle charging plug according to claim 2 is characterized in that: A guide rail (14) is provided inside the terminal fixing block (102), and a positioning pin (15) is provided in cooperation with the guide rail (14). The guide rail (14) can ensure that the charging terminal (103) moves along a correct path during insertion, and the positioning pin (15) is used to accurately fix the position of the charging terminal (103).

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