Charging seat with common ground bar structure

Abstract

The utility model discloses a charging seat with a common ground bar structure, which is characterized in that a charging seat shell is provided with a charging panel, the charging panel protrudes and extends to form an alternating current interface and a direct current interface, an alternating current grounding terminal is arranged in the alternating current interface, a direct current grounding terminal is arranged in the direct current interface, and a grounding common ground bar is electrically connected with a grounding end of a vehicle system. The grounding common-ground bar comprises an alternating-current plugging ring embedded in the alternating-current interface, a direct-current plugging ring embedded in the direct-current interface and a connecting part for connecting the alternating-current plugging ring and the direct-current plugging ring, and the alternating-current plugging ring is electrically connected with the alternating-current grounding terminal through a first annular elastic body; according to the integrated grounding common-ground bar, the integrated grounding common-ground bar is designed, the alternating current plugging ring and the direct current plugging ring are electrically connected with the alternating current grounding terminal and the direct current grounding terminal through the annular elastic bodies respectively, the production cost is low, parts are reduced, and the cost is reduced. And the process is simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy vehicle circuits, and more specifically, to a charging seat with a common ground row structure. Background Art

[0002] With the rapid development and popularization of new energy vehicles, the charging device standard for electric vehicles requires that in all charging devices, a PE line must be set. The PE line is the grounding wire of the charging device and is used to protect the equipment and people in case of leakage. During the design of the charging interface, the grounding system often requires multiple connecting components. Usually, the AC and DC grounding terminals are respectively crimped with copper wires, and the terminals are crimped on the other side of the copper wires for grounding. In this design, when crimping the grounding terminals and the other ends, the copper wires need to pass through the charging interface housing, and the charging interface housing is crimped with the terminals together. After the copper wires pass through the charging interface housing, a sealing ring and a sealing ring cover need to be added, and the two groundings need to be nailed and fixed to the vehicle body sheet metal for grounding. The structure is complex, the installation and processing are time-consuming and laborious, and it is easy to have connection errors, resulting in short circuits and damage to the vehicle body lines, and even causing equipment leakage and the risk of personal electric shock and casualties. Therefore, there is an urgent need for a new solution in the prior art to solve the above problems. Summary of the Utility Model

[0003] An object of the utility model is to provide a new technical solution of a charging seat with a common ground row structure to solve the complex structure of respectively crimping copper wires on the AC and DC grounding terminals and then crimping the terminals on the other side of the copper wires for grounding, and the problems of time-consuming and laborious processing, connection errors, and short circuits damaging the vehicle body lines caused thereby.

[0004] According to the first aspect of the utility model, there is provided a charging seat with a common ground row structure, including a charging seat housing, a grounding common ground row, a first annular elastic body, and a second annular elastic body. The charging seat housing has a charging panel, and the charging panel protrudes and extends with an AC interface and a DC interface. An AC grounding terminal is arranged in the AC interface, and a DC grounding terminal is arranged in the DC interface. The grounding common ground row is electrically connected to the grounding end of the vehicle system. The grounding common ground row includes an AC insertion ring embedded in the AC interface, a DC insertion ring embedded in the DC interface, and a connecting portion connecting the AC insertion ring and the DC insertion ring. The AC insertion ring is electrically connected to the AC grounding terminal through the first annular elastic body, the DC insertion ring is electrically connected to the DC grounding terminal through the second annular elastic body, and the grounding common ground row is electrically connected to the grounding end through the connecting portion.

[0005] Optionally, the AC plugging ring and the DC plugging ring are configured to be formed by stamping the end of the connecting portion, or the side walls of the AC plugging ring and the DC plugging ring are respectively welded to the end of the connecting portion.

[0006] Optionally, the first annular elastic member is a first drum spring, and the second annular elastic member is a second drum spring.

[0007] Optionally, the AC interface is provided with a first plugging cylinder, the AC plugging ring is embedded in the inner wall of the end of the first plugging cylinder, and the first drum spring is arranged between the AC plugging ring and the AC grounding terminal.

[0008] A second plugging cylinder is arranged in the DC interface, the DC plugging ring is embedded in the inner wall of the end of the second plugging cylinder, and the second drum spring is arranged between the DC plugging ring and the DC grounding terminal.

[0009] Optionally, the AC grounding terminal is provided with a circumferential first annular mounting groove, the first drum spring is fitted in the first annular mounting groove, and both ends of its opening are abutted against the side edges of the first annular mounting groove, and the maximum outer diameter of the first drum spring is abutted against the inner wall of the AC plugging ring; the DC grounding terminal is provided with a circumferential second annular mounting groove, the second drum spring is fitted in the second annular mounting groove, and both ends of its opening are abutted against the side edges of the second annular mounting groove, and the maximum outer diameter of the second drum spring is abutted against the inner wall of the DC plugging ring.

[0010] Optionally, the inner diameter of the AC plugging ring is 0.85 - 0.98 times the maximum outer diameter of the first drum spring in the free state, and the inner diameter of the DC plugging ring is 0.85 - 0.98 times the maximum outer diameter of the second drum spring in the free state.

[0011] Optionally, the grounding common bus bar is a metal insert, the metal insert is pre-buried in the injection mold of the charging base housing, and the charging base housing is formed into an integral structure with the metal insert by an injection molding process.

[0012] Optionally, a conductive member is arranged on the connecting portion, and the connecting portion is electrically connected to the grounding end through the conductive member.

[0013] Optionally, a through hole is arranged on the connecting portion, and the conductive member passes through the through hole to be electrically connected to the grounding end.

[0014] Optionally, the grounding common bus bar is arranged on one side close to the DC grounding terminal and the AC grounding terminal.

[0015] The beneficial effects produced by the present utility model are as follows:

[0016] The AC grounding terminal and the DC grounding terminal are simultaneously electrically connected to the grounding common busbar. The grounding common busbar serves as a grounding transmission carrier to ground the grounding terminals of the two charging cores simultaneously, reducing parts and simplifying the process. The AC plugging ring and the DC plugging ring of the grounding common busbar are respectively embedded in the AC interface and the DC interface as inserts, and are electrically connected to the AC grounding terminal and the DC grounding terminal through annular elastic bodies, ensuring the stability of the connection between the grounding terminal and the grounding common busbar. Moreover, the grounding common busbar is integrally injection-molded in the charging seat housing, not only eliminating the sealing structure, but also achieving a better waterproof and dustproof effect.

[0017] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings incorporated in and constituting a part of this specification illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0019] Figure 1 is an exploded structural schematic diagram of a charging seat with a common grounding busbar structure according to the present invention;

[0020] Figure 2 is a three-dimensional structural schematic diagram of a charging seat with a common grounding busbar structure according to the present invention;

[0021] Figure 3 is a structural schematic diagram of the integral injection molding of the grounding common busbar and the charging seat housing according to the present invention;

[0022] Figure 4 is a schematic diagram of the integrally formed structure of the grounding common busbar according to the present invention;

[0023] Figure 4a is a structural schematic diagram of another embodiment of the grounding common busbar according to the present invention;

[0024] Figure 5 is a structural schematic diagram of the cooperation of the DC grounding terminal, the second annular elastic body, and the DC plugging ring according to the present invention;

[0025] Figure 6 is a structural schematic diagram of the cooperation of the AC grounding terminal, the first annular elastic body, and the AC plugging ring according to the present invention.

[0026] The labels in the drawings are as follows:

[0027] 1. Charging base housing; 2. DC interface; 3. AC interface; 21. Second insertion cylinder; 31. First insertion cylinder; 4. DC grounding terminal; 41. Second annular mounting groove; 5. AC grounding terminal; 51. First annular mounting groove; 6. Grounding common bus; 61. DC insertion ring; 62. AC insertion ring; 63. Connection part, 631. Through hole; 7. Second drum spring; 8. First drum spring. Detailed implementation mode

[0028] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and values set forth in these embodiments do not limit the scope of the present invention.

[0029] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way limits the present invention, its application or use.

[0030] Technologies, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods and devices should be regarded as part of the specification.

[0031] In all examples shown and discussed herein, any specific values should be construed as merely exemplary and not as a limitation. Thus, other examples of the exemplary embodiments may have different values.

[0032] According to a first aspect of the present invention, as Figures 1-6 shown, there is provided a charging base with a common ground bus structure, including a charging base housing 1, a grounding common bus 6, a first annular elastic body and a second annular elastic body. The charging base housing 1 has a charging panel, and the charging panel protrudes and extends with an AC interface 3 and a DC interface 2. An AC grounding terminal 5 is arranged in the AC interface 3, and a DC grounding terminal 4 is arranged in the DC interface 2. The grounding common bus 6 is electrically connected to the grounding end of the vehicle system. The grounding common bus 6 includes an AC insertion ring 62 embedded in the AC interface 3, a DC insertion ring 61 embedded in the DC interface 2, and a connection part 63 connecting the AC insertion ring 62 and the DC insertion ring 61. The AC insertion ring 62 is electrically connected to the AC grounding terminal 5 through the first annular elastic body, the DC insertion ring 61 is electrically connected to the DC grounding terminal 4 through the second annular elastic body, and the grounding common bus 6 is electrically connected to the grounding end through the connection part 63.

[0033] With the rapid development and popularization of new energy vehicles, the charging device standards for electric vehicles require that in all charging devices, a PE line must be set. The PE line is the grounding wire of the charging device and is used to protect the equipment and people in case of leakage. During the design of the charging interface, usually the grounding terminals for AC and DC are respectively crimped with copper wires, and the terminals are crimped on the other side of the copper wires for grounding. In this design, when crimping the grounding terminals and the other terminals, the copper wires need to pass through the charging interface housing, and the terminals are crimped with the charging interface housing together. After the copper wires pass through, the charging interface housing needs to be equipped with a sealing ring and a sealing ring cover, and the two groundings need to be nailed and fixed to the body sheet metal for grounding. The structure is complex, the installation and processing are time-consuming and laborious, and it is easy to have connection errors, causing short circuits and damaging the body wiring, and even leading to equipment leakage and the risk of electric shock and casualties to personnel.

[0034] In this design, the AC grounding terminal 5 and the DC grounding terminal 4 are electrically connected to the grounding common bus bar 6 at the same time. The grounding common bus bar 6 serves as a grounding transmission carrier and grounds the grounding terminals of the two charging interfaces at the same time, reducing parts and simplifying the process. The AC insertion ring 62 and the DC insertion ring 61 of this grounding common bus bar 6 are respectively embedded in the AC interface 3 and the DC interface 2 as inserts, and are electrically connected to the AC grounding terminal 5 and the DC grounding terminal 4 through the first annular elastic body and the second annular elastic body respectively, ensuring the stability of the connection between the grounding terminal and the grounding common bus bar 6, and the structure is simple, and the installation is time-saving and laborious.

[0035] In some embodiments, such as Figure 4 , Figure 4a shown, the AC insertion ring 62 and the DC insertion ring 61 are configured to be formed by stamping the end of the connecting portion 63, or the side walls of the AC insertion ring 62 and the DC insertion ring 61 are respectively welded to the end of the connecting portion 63.

[0036] The AC insertion ring 62 and the DC insertion ring 61 are formed by stamping the end of the connecting portion 63. The AC insertion ring 62, the DC insertion ring 61 and the connecting portion 63 are integrally formed by stamping, and the overall structure is more stable; or the two ends of the connecting portion 63 are respectively welded to the outer walls of the AC insertion ring 62 and the DC insertion ring 61 in a minor arc to form an integral body, and the overall structure is simple and easy to produce; or the two ends of the connecting portion 63 are respectively sleeved on the outer walls of the DC insertion ring 61 and the AC insertion ring 62 and are respectively welded into an integral body to realize the conduction of the grounding loop.

[0037] In some embodiments, the first annular elastic member is the first drum spring 8, and the second annular elastic member is the second drum spring 7.

[0038] The drum spring is made of multiple thin steel strips with good elasticity and a circular steel strip. It has good elasticity and a long service life, which can ensure the stable connection between the grounding common ground row 6 and the grounding terminal during the charging base's use in various environments.

[0039] In some embodiments, as Figures 1-3 shown, the AC interface 3 is provided with a first insertion cylinder 31. The AC insertion ring 62 is embedded in the inner wall of the end of the first insertion cylinder 31. The first drum spring 8 is arranged between the AC insertion ring 62 and the AC grounding terminal 5.

[0040] The DC interface 2 is provided with a second insertion cylinder 21. The DC insertion ring 61 is embedded in the inner wall of the end of the second insertion cylinder 21. The second drum spring 7 is arranged between the DC insertion ring 61 and the DC grounding terminal 4.

[0041] The AC insertion ring 62 is embedded in the inner wall of the end of the first insertion cylinder 31 to complete its fixation. During assembly, after the AC grounding terminal 5 is sleeved with the first drum spring 8, it is then inserted into the first insertion cylinder 31 until the outer wall of the first drum spring 8 abuts against the inner wall of the AC insertion ring 62, completing the electrical connection between the AC grounding terminal 5 and the AC insertion ring 62. The DC insertion ring 61 is embedded in the inner wall of the end of the second insertion cylinder 21 to complete its fixation. During assembly, after the DC grounding terminal 4 is sleeved with the second drum spring 7, it is then inserted into the second insertion cylinder 21 until the outer wall of the second drum spring 7 abuts against the inner wall of the DC insertion ring 61, completing the electrical connection between the DC grounding terminal 4 and the DC insertion ring 61.

[0042] In some embodiments, as Figures 5-6 shown, the AC grounding terminal 5 is provided with a circumferential first annular installation groove 51. The first drum spring 8 is fitted in the first annular installation groove 51, and the two ends of its opening abut against the side edges of the first annular installation groove 51. The maximum outer diameter of the first drum spring 8 abuts against the inner wall of the AC insertion ring 62. The DC grounding terminal 4 is provided with a circumferential second annular installation groove 41. The second drum spring 7 is fitted in the second annular installation groove 41, and the two ends of its opening abut against the side edges of the second annular installation groove 41. The maximum outer diameter of the second drum spring 7 abuts against the inner wall of the DC insertion ring 61.

[0043] This structural design is to better fix the first drum spring 8 in the first annular installation groove 51 to complete the electrical connection between the AC grounding terminal 5 and the AC insertion ring 62, and to better fix the second drum spring 7 in the second annular installation groove 41 to complete the electrical connection between the DC grounding terminal 4 and the DC insertion ring 61.

[0044] In some embodiments, the inner diameter of the AC plugging ring 62 is 0.85 - 0.98 times the maximum outer diameter of the first drum spring 8 in a free state, and the inner diameter of the DC plugging ring 61 is 0.85 - 0.98 times the maximum outer diameter of the second drum spring 7 in a free state.

[0045] When the inner diameter of the AC plugging ring 62 is less than 0.85 times the maximum outer diameter of the first drum spring 8 in a free state, and the inner diameter of the DC plugging ring 61 is less than 0.85 times the maximum outer diameter of the second drum spring 7 in a free state, the first drum spring 8 and the second drum spring 7 are prone to damage, have a short lifespan, or cannot be smoothly assembled into the plugging ring due to being subjected to an overload contact force for a long time;

[0046] When the inner diameter of the AC plugging ring 62 is greater than 0.98 times the maximum outer diameter of the first drum spring 8 in a free state, and the inner diameter of the DC plugging ring 61 is greater than 0.98 times the maximum outer diameter of the second drum spring 7 in a free state, the first drum spring 8 and the AC grounding terminal 5 as well as the second drum spring 7 and the DC grounding terminal 4 fall off from the charging interface due to insufficient contact force on the first drum spring 8 and the second drum spring 7, and the electrical connection between the AC plugging ring 62 and the AC grounding terminal 5 and the electrical connection between the DC plugging ring 61 and the DC grounding terminal 4 cannot be completed;

[0047] When the inner diameter of the AC plugging ring 62 is 0.85 - 0.95 times the maximum outer diameter of the first drum spring 8 in a free state, and the inner diameter of the DC plugging ring 61 is 0.85 - 0.98 times the maximum outer diameter of the second drum spring 7 in a free state, the first drum spring 8 is well squeezed between the AC plugging ring 62 and the AC grounding terminal 5 and will not fall off, and the second drum spring 7 is well squeezed between the DC plugging ring 61 and the DC grounding terminal and will not fall off. Therefore, the inventor selects the inner diameter of the AC plugging ring 62 to be 0.85 - 0.98 times the maximum outer diameter of the first drum spring 8 in a free state, and the inner diameter of the DC plugging ring 61 to be 0.85 - 0.98 times the maximum outer diameter of the second drum spring 7 in a free state.

[0048] In some embodiments, as Figures 2-3 shown, the grounding common bus bar 6 is a metal insert, the metal insert is embedded in the injection mold of the charging base housing 1, and the charging base housing 1 and the metal insert are formed into an integral structure through an injection molding process.

[0049] The grounding common bus bar 6 is integrally injection molded in the charging base housing 1, which not only eliminates the need for a sealing structure but also has a better waterproof and dustproof effect.

[0050] In some embodiments, a conductive member is provided on the connecting portion 63, and the connecting portion 63 is electrically connected to the grounding end through the conductive member.

[0051] In some embodiments, as Figure 4 shown, a through hole 631 is provided on the connecting portion 63, and the conductive member passes through the through hole 631 and is electrically connected to the grounding end.

[0052] The conductive member can be a stud structure or a nut structure (not shown in the figure). After the stud or nut passes through 631, it can be conveniently screwed with the nut or stud on the body sheet metal to connect the grounding common bus 6 to the body sheet metal part and complete grounding.

[0053] In some embodiments, as Figure 2 shown, the grounding common bus 6 is disposed on one side close to the DC grounding terminal 4 and the AC grounding terminal 5.

[0054] The grounding common bus 6 is disposed on one side close to the DC grounding terminal 4 and the AC grounding terminal 5. This arrangement can not only save the material usage of the grounding common bus 6, but also simplify its structure, and the assembly is more simple and convenient.

[0055] Although some specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present invention. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A charging station with a common ground row structure, characterized in that: include: A charging seat shell, a grounding common bar, a first annular elastic body and a second annular elastic body, the charging seat shell having a charging panel, the charging panel protruding and extending with an AC interface and a DC interface, the AC interface is provided with an AC grounding terminal, the DC interface is provided with a DC grounding terminal, the grounding common bar is electrically connected to the ground end of the vehicle system, the grounding common bar includes an AC plug ring embedded in the AC interface, a DC plug ring embedded in the DC interface, and a connecting part connecting the AC plug ring and the DC plug ring, the AC plug ring is electrically connected to the AC grounding terminal through the first annular elastic body, the DC plug ring is electrically connected to the DC grounding terminal through the second annular elastic body, and the grounding common bar is electrically connected to the ground end through the connecting part.

2. The charging stand with a common ground row structure according to claim 1, characterized in that: The AC plug-in ring and the DC plug-in ring are configured as the ends of the connecting portion being stamped, or the side walls of the AC plug-in ring and the DC plug-in ring are respectively connected to the ends of the connecting portion by welding.

3. The charging stand with a common ground row structure according to claim 1, characterized in that: The first annular elastic body is a first drum spring, and the second annular elastic body is a second drum spring.

4. The charging stand with a common ground row structure according to claim 3, characterized in that: The AC interface is provided with a first plug-in cylinder, the AC plug-in ring is embedded in the inner wall of the end of the first plug-in cylinder, the first drum spring is arranged between the AC plug-in ring and the AC grounding terminal, and the DC interface is provided with a second plug-in cylinder, the DC plug-in ring is embedded in the inner wall of the end of the second plug-in cylinder, and the second drum spring is arranged between the DC plug-in ring and the DC grounding terminal.

5. The charging stand with a common ground row structure according to claim 4, characterized in that: The AC grounding terminal is provided with a circumferential first annular mounting groove, the first drum spring is matched in the first annular mounting groove, and the two ends of its opening abut against the side edges of the first annular mounting groove, and the maximum outer diameter of the first drum spring abuts against the inner wall of the AC plug ring; the DC grounding terminal is provided with a circumferential second annular mounting groove, the second drum spring is matched in the second annular mounting groove, and the two ends of its opening abut against the side edges of the second annular mounting groove, and the maximum outer diameter of the second drum spring abuts against the inner wall of the DC plug ring.

6. The charging stand with a common ground row structure according to claim 5, characterized in that: The inner diameter of the AC plug ring is 0.85-0.98 times the maximum outer diameter of the first drum spring in a free state, and the inner diameter of the DC plug ring is 0.85-0.98 times the maximum outer diameter of the second drum spring in a free state.

7. The charging stand with a common ground row structure according to claim 1, characterized in that: The grounding common row is a metal insert, which is pre-embedded in an injection mold of the charging seat shell. The charging seat shell is formed into an integrated structure with the metal insert through an injection molding process.

8. The charging stand with a common ground row structure according to claim 1, characterized in that: The connecting portion is provided with a conductive member, and the connecting portion is electrically connected to the ground terminal through the conductive member.

9. The charging stand with a common ground row structure according to claim 8, characterized in that: The connecting portion is provided with a through hole, and the conductive member passes through the through hole and is electrically connected to the grounding end.

10. The charging stand with a common ground row structure according to claim 1, characterized in that: The grounding common bar is arranged at a side close to the DC grounding terminal and the AC grounding terminal.

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