Charging gun and charging system

Abstract

The utility model provides a charging gun and a charging system, and belongs to the technical field of charging. The charging gun comprises a shell, a plurality of wiring assemblies and a sealing piece. The shell comprises a plurality of insertion cavities and a containing cavity, and each insertion cavity is communicated with the containing cavity. Each wiring assembly comprises a terminal and a cable, the terminal is connected with the cable, and the sealing piece wraps the connecting position of the terminal and the cable of the multiple wiring assemblies, so that the sealing piece is fixedly connected with the wiring assemblies. The terminal extends into the insertion cavity, a part of the cable is located in the containing cavity, the sealing piece is located in the containing cavity, and the side wall of the sealing piece is connected with the side wall of the containing cavity in a clamped mode. Therefore, the sealing element is fixed in the accommodating cavity, and the wiring assembly is fixed on the shell. Therefore, the wiring assembly does not need to be fixed by using other parts, so that the assembly process is relatively simple. In addition, the sealing member can prevent water or other impurities from entering the joint of the terminal and the cable.

Description

Technical Field

[0001] This disclosure relates to the field of charging technology, and in particular to a charging gun and a charging system. Background Technology

[0002] The charging gun is used to connect to electrical equipment (such as electric vehicles) and charging piles, enabling the equipment to draw power from the charging pile through the charging gun.

[0003] In related technologies, the charging gun includes a housing and a wiring assembly, with the wiring assembly extending into the insertion cavity of the housing. The wiring assembly needs to be fixed in the insertion cavity by a fixing plate, making the assembly process relatively cumbersome. Summary of the Invention

[0004] This disclosure provides a charging gun and a charging system that can solve the technical problems existing in the related art. The technical solutions of the charging gun and the charging system are as follows.

[0005] In a first aspect, this disclosure provides a charging gun, which includes a housing, multiple wiring assemblies, and a seal;

[0006] The housing includes multiple insertion cavities and receiving cavities, each of the insertion cavities communicating with the receiving cavity;

[0007] The wiring assembly includes terminals and cables, the terminals being connected to the cables, and the seal covering the connection points between the terminals and the cables of the plurality of wiring assemblies;

[0008] The terminal extends into the insertion cavity, the seal is located in the receiving cavity, and the side wall of the seal engages with the side wall of the receiving cavity.

[0009] In one possible implementation, the seal includes a plate and a plurality of snap fasteners, the plurality of snap fasteners being circumferentially spaced on the sidewalls of the plate;

[0010] The sidewall of the receiving cavity has multiple circumferentially spaced snap-fit ​​grooves, and the buckle snaps into the snap-fit ​​grooves.

[0011] In one possible implementation, the latch extends axially along the receiving cavity, and the sidewall of the latch has a snap-fit ​​protrusion;

[0012] The snap-fit ​​protrusion snaps into the snap-fit ​​groove.

[0013] In one possible implementation, the snap-fit ​​protrusion has a mounting surface on the side facing the insertion cavity;

[0014] Along the direction away from the insertion cavity, the distance between the mounting surface and the snap-fit ​​gradually increases.

[0015] In one possible implementation, the bottom of the receiving cavity has multiple through holes, and each of the insertion cavities communicates with the receiving cavity through one of the through holes;

[0016] The sealing element abuts against the side of the cavity bottom facing the receiving cavity, and the buckle abuts against the end of the snap-fit ​​groove away from the insertion cavity.

[0017] In one possible implementation, the seal includes a plate and a plurality of first sleeves fixed to the plate, each first sleeve covering one of the terminals of the wiring assembly and the connection point of the cable.

[0018] In one possible implementation, the first sleeve is fixed to the side of the plate facing the insertion cavity.

[0019] In one possible implementation, the bottom of the receiving cavity includes a plurality of second sleeves;

[0020] The through hole penetrates the second sleeve, and the second sleeve is fitted around the first sleeve.

[0021] In one possible implementation, the second sleeve abuts against the side of the plate facing the insertion cavity, or the first sleeve abuts against the bottom of the cavity.

[0022] In one possible implementation, the seal and the snap-fit ​​plate are integrally injection molded parts.

[0023] In one possible implementation, the number of the snap-on plates is 4-8.

[0024] In one possible implementation, the plurality of wiring assemblies includes at least one high-voltage wiring assembly and at least one low-voltage wiring assembly.

[0025] In a second aspect, this disclosure provides a charging system comprising a charging gun as described in any of the first aspects.

[0026] The technical solution provided in this disclosure includes at least the following beneficial effects:

[0027] This disclosure provides a charging gun in which a seal covers multiple wiring assemblies, thus fixing the seal and wiring assemblies together. The seal engages with a receiving cavity, thereby fixing the seal within the cavity and securing the wiring assemblies to the housing. This eliminates the need for additional components to secure the wiring assemblies, simplifying the assembly process. Furthermore, the seal prevents water or other impurities from entering at the connection points between the terminals and cables.

[0028] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0029] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. In the drawings:

[0030] Figure 1 This is a schematic diagram of the structure of a charging gun shown in an embodiment of this disclosure;

[0031] Figure 2 This is a schematic diagram of the structure of a charging gun shown in an embodiment of this disclosure;

[0032] Figure 3 This is an exploded view of a charging gun shown in an embodiment of this disclosure;

[0033] Figure 4 This is a schematic diagram of the structure of a sealing element and wiring assembly shown in an embodiment of this disclosure;

[0034] Figure 5 This is a cross-sectional view of a charging gun shown in an embodiment of this disclosure;

[0035] Figure 6 This is a schematic diagram of the structure of a sealing element shown in an embodiment of this disclosure.

[0036] Legend:

[0037] 1. Shell; 11. Insertion cavity; 12. Receiving cavity; 121. Snap-fit ​​groove; 13. Cavity bottom; 130. Through hole; 130a. Stepped structure; 131. Second sleeve;

[0038] 2. Wiring assembly; 21. Terminal; 22. Cable;

[0039] 3. Sealing element; 31. Plate body; 311. First side wall; 312. Second side wall; 313. Third side wall; 314. Fourth side wall; 32. Snap fastener; 321. Snap-fit ​​protrusion; 321a. Mounting surface; 33. First sleeve.

[0040] The accompanying drawings have illustrated specific embodiments of this disclosure, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this disclosure to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings.

[0042] The terminology used in the embodiments of this disclosure is for illustrative purposes only and is not intended to limit the disclosure. Unless otherwise defined, the technical or scientific terms used herein should be understood in their ordinary sense by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” “third,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “a” or “one,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising,” “including,” and similar terms mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, and do not exclude other elements or objects. The terms “connected,” “linked,” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” “right,” etc., are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0043] The charging gun is used to connect to electrical equipment (such as electric vehicles) and charging piles, enabling the equipment to draw power from the charging pile through the charging gun.

[0044] In related technologies, the charging gun includes a housing and a wiring assembly, with the wiring assembly extending into the insertion cavity of the housing. The wiring assembly needs to be fixed in the insertion cavity by a fixing plate, making the assembly process relatively cumbersome.

[0045] In view of the above-mentioned technical problems, embodiments of this disclosure provide a charging gun, such as... Figures 1-3 As shown, the charging gun includes a housing 1, multiple wiring assemblies 2, and a seal 3. The housing 1 includes multiple insertion cavities 11 and a receiving cavity 12, with each insertion cavity 11 communicating with the receiving cavity 12. Each wiring assembly 2 includes a terminal 21 and a cable 22, with the terminal 21 connected to the cable 22. The seal 3 covers the connection points of the terminals 21 and the cable 22 of the multiple wiring assemblies 2. The terminal 21 extends into the insertion cavity 11, a portion of the cable 22 is located in the receiving cavity 12, and the seal 3 is located in the receiving cavity 12, with its sidewall engaging with the sidewall of the receiving cavity 12.

[0046] The multiple wiring components 2 include at least one high-voltage wiring component and at least one low-voltage wiring component. The high-voltage wiring component enables power transfer between the charging gun and the electrical device (such as an electric vehicle), thereby supplying power to the device. The high-voltage wiring component can be an L-pole wiring component, an N-pole wiring component, and a PE-pole wiring component. For example, the high-voltage wiring components of a three-phase AC charging gun include three L-pole wiring components, one N-pole wiring component, and one PE-pole wiring component. The low-voltage wiring component enables communication between the charging gun and the electrical device. The low-voltage wiring component can follow the CC (Control & Communication Link) communication protocol, allowing the user to confirm whether the charging gun is plugged into the electrical device. Alternatively, the low-voltage wiring component can follow the CP (Cyclic Prefix) communication protocol, allowing the electrical device to send a charging request signal to the charging gun through the low-voltage wiring component.

[0047] The technical solution provided in this embodiment of the disclosure involves a sealing element 3 covering multiple wiring assemblies 2, thus the sealing element 3 and the wiring assemblies 2 are fixedly connected. The sealing element 3 engages with the receiving cavity 12, thereby fixing the sealing element 3 to the receiving cavity 12 and thus fixing the wiring assemblies 2 to the housing 1. This eliminates the need for other components to fix the wiring assemblies 2, simplifying the assembly process. Furthermore, the sealing element 3 also prevents water or other impurities from entering the connection between the terminal 21 and the cable 22.

[0048] The following is an exemplary description of how the side wall of the seal 3 engages with the side wall of the receiving cavity 12.

[0049] In some examples, such as Figure 3 and Figure 4 As shown, the sealing element 3 includes a plate 31 and a plurality of snap fasteners 32. The plurality of snap fasteners 32 are distributed circumferentially at intervals on the side wall of the plate 31, and the plate 31 covers the connection points of the terminals 21 and cables 22 of the plurality of wiring assemblies 2. The side wall of the receiving cavity 12 has a plurality of circumferentially spaced engagement grooves 121, and the snap fasteners 32 engage with the engagement grooves 121.

[0050] In some examples, such as Figure 3 and Figure 4As shown, the latch 32 extends axially along the receiving cavity 12. The sidewall of the latch 32 has a latching protrusion 321, which engages with the latching groove 121. During the insertion of the terminal 21 into the insertion cavity 11, the latch 32 first extends into the receiving cavity 12. After the latching protrusion 321 extends into the receiving cavity 12, the sidewall of the receiving cavity 12 presses against the latching protrusion 321, thereby causing the latch 32 to deform and bend away from the sidewall of the receiving cavity 12, so that the latching protrusion 321 extends into the latching groove 121, thus achieving the engagement of the latching protrusion 321 and the latching groove 121.

[0051] In other examples, the snap-fit ​​32 may also extend radially along the receiving cavity 12. The end of the snap-fit ​​32 engages with the snap-fit ​​groove 121.

[0052] Of course, in other examples, the snap-fit ​​groove 121 can also be a protrusion on the side wall of the receiving cavity 12, and the side wall of the buckle 32 has a groove, so as to realize the snap-fit ​​between the snap-fit ​​groove 121 and the buckle 32.

[0053] In some examples, such as Figure 4 and Figure 5 As shown, the snap-fit ​​protrusion 321 has a mounting surface 321a on the side facing the insertion cavity 11. The distance between the mounting surface 321a and the snap fastener 32 gradually increases in the direction away from the insertion cavity 11. Thus, during installation, the mounting surface 321a first abuts against the side wall of the receiving cavity 12 at the end away from the insertion cavity 11. Then, the mounting surface 321a gradually slides along the side wall of the receiving cavity 12, while the side wall of the receiving cavity 12 presses against the mounting surface, causing deformation of the snap-fit ​​protrusion 321 and the snap fastener 32, allowing the snap-fit ​​protrusion 321 to smoothly enter the receiving cavity 12.

[0054] In some examples, such as Figure 4 and Figure 5 As shown, the snap-fit ​​protrusion 321 is located at the end of the latch 32 away from the insertion cavity 11. Thus, when the snap-fit ​​protrusion 321 abuts against the side wall of the receiving cavity 12, the end of the latch 32 away from the insertion cavity 11 is subjected to compressive force. This results in a larger torque on the latch 32, making it easier for the latch 32 to bend and deform in the direction away from the side wall of the receiving cavity 12, thereby making it easier for the snap-fit ​​protrusion 321 to extend into the receiving cavity 12. If the snap-fit ​​protrusion 321 is located at the end of the latch 32 closer to the insertion cavity 11, the latch 32 is less likely to deform, making it less likely for the snap-fit ​​protrusion 321 to extend into the receiving cavity 12.

[0055] In other examples, the snap-fit ​​protrusion 321 may also be located in the middle of the snap fastener 32, and this embodiment of the present disclosure does not specifically limit this.

[0056] In some examples, such as Figure 5As shown, the end of the latch 32 away from the insertion cavity 11 is flush with the end of the receiving cavity 12 away from the insertion cavity 11. This gives the latch 32 a longer length, which makes it easier for the latch 32 to deform when the latching protrusion 321 is squeezed by the receiving cavity 12, thus facilitating the entry of the latching protrusion 321 into the receiving cavity 12.

[0057] In some examples, such as Figure 5 As shown, the bottom 13 of the receiving cavity 12 has multiple through holes 130, and each insertion cavity 11 communicates with the receiving cavity 12 through one through hole 130. The sealing member 3 abuts against the side of the cavity bottom 13 facing the receiving cavity 12, thereby preventing the sealing member 3 from moving towards the insertion cavity 11. The latch 32 abuts against the end of the latching groove 121 away from the insertion cavity 11, thereby preventing the sealing member 3 from moving away from the insertion cavity 11. In this way, the axial positioning of the sealing member 3 can be achieved, thereby achieving the axial positioning of the wiring assembly 2.

[0058] In some examples, such as Figure 5 As shown, the width of the snap-fit ​​groove 121 is greater than the width of the snap-fit ​​protrusion 321, thereby avoiding over-positioning between the seal 3 and the housing 1.

[0059] In some examples, such as Figures 4-6 As shown, the seal 3 includes a plate 31 and a plurality of first sleeves 33. The first sleeves 33 are fixed to the plate 31, and each first sleeve 33 covers the connection point between the terminal 21 and the cable 22 of a wiring assembly 2. This allows the plate 31 to be made thinner, thereby reducing the overall weight of the seal 3. If the first sleeves 33 are not provided, in order to ensure that the seal 3 can cover the connection point between the terminal 21 and the cable 22, the thickness of the plate 31 must be greater than or equal to the length of the connection point, resulting in a thicker plate 31 and a heavier seal 3.

[0060] In some examples, such as Figures 4-6 As shown, the buckle 32 is located on the side of the plate 31 away from the insertion cavity 11, and the first sleeve 33 is fixed on the side of the plate 31 facing the insertion cavity 11. This avoids the buckle 32 from being too long.

[0061] In some examples, such as Figure 5 As shown, the bottom 13 of the receiving cavity 12 includes a plurality of second sleeves 131. A through hole 130 penetrates the second sleeve 131, and the second sleeve 131 surrounds the first sleeve 33. This increases the contact area between the housing 1 and the seal 3, thereby improving the connection strength between the housing 1 and the seal 3, and further improving the connection strength between the wiring assembly 2 and the housing 1. Furthermore, it improves the sealing performance at the connection points of the terminal 21 and the cable 22, further reducing the entry of impurities into the connection points of the terminal 21 and the cable 22.

[0062] In some examples, such as Figure 5 As shown, the second sleeve 131 abuts against the side of the plate 31 facing the insertion cavity 11. Alternatively, the first sleeve 33 abuts against the bottom of the cavity 13, thereby achieving axial positioning of the seal 3.

[0063] For example, such as Figure 5 As shown, the inner wall of the through hole 130 has a stepped structure 130a, and the first sleeve 33 abuts against the stepped structure 130a.

[0064] In some examples, such as Figure 6 As shown, the seal 3 and the snap-fit ​​32 are integrally injection molded parts. This gives the seal 3 a high overall structural strength.

[0065] After the terminal 21 and cable 22 are crimped together, they are placed in a mold and then injection molded to obtain the seal 3. The crimped joint of the terminal 21 and cable 22 is wrapped by the seal 3, so that the protection performance of the crimped joint can reach IP67. After injection molding, the inner wall of the through hole 30 of the seal 3 is mutually restrained with the terminal 21 and cable 22. After the seal 3 is fixed in the housing 1, the entire wiring assembly 2 can be fixed in the housing 1, thereby improving the stability of the wiring assembly 2.

[0066] In some examples, the number of snaps 32 is 4-8. This allows for a high connection strength between the seal 3 and the housing 1.

[0067] For example, the number of clips 32 is 5. Figure 6 As shown, the plate 31 has a first sidewall 311, a second sidewall 312, a third sidewall 313, and a fourth sidewall 314 connected in sequence. The first sidewall 311 and the third sidewall 313 are planar, and the length of the first sidewall 311 is greater than the length of the third sidewall 313. The second sidewall 312 and the fourth sidewall 314 are arc-shaped. Two latches 32 are located on the first sidewall 311, and the other three latches 32 are located on the second sidewall 312, the third sidewall 313, and the fourth sidewall 314, respectively.

[0068] This disclosure also provides a charging system, which includes the charging gun described above.

[0069] The charging system also includes a charging station, and the charging gun can be plugged into the charging station. After the charging gun is plugged into the charging station, terminal 21 is electrically connected to the charging station, allowing the charging gun to draw power from the charging station.

[0070] The above description is merely an optional embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A charging gun, characterized in that, The charging gun includes a housing (1), multiple wiring assemblies (2) and a seal (3). The housing (1) includes a plurality of insertion cavities (11) and receiving cavities (12), each of the insertion cavities (11) being in communication with the receiving cavity (12); The wiring assembly (2) includes a terminal (21) and a cable (22), the terminal (21) being connected to the cable (22), and the seal (3) covering the connection between the terminal (21) and the cable (22) of the plurality of wiring assemblies (2); The terminal (21) extends into the insertion cavity (11), the seal (3) is located in the receiving cavity (12), and the side wall of the seal (3) is engaged with the side wall of the receiving cavity (12).

2. The charging gun according to claim 1, characterized in that, The sealing element (3) includes a plate (31) and a plurality of snap fasteners (32), which are distributed circumferentially at intervals on the side wall of the plate (31); The sidewall of the receiving cavity (12) has a plurality of circumferentially spaced snap-fit ​​grooves (121), and the buckle (32) snaps into the snap-fit ​​grooves (121).

3. The charging gun according to claim 2, characterized in that, The buckle (32) extends axially along the receiving cavity (12), and the sidewall of the buckle (32) has a snap-fit ​​protrusion (321). The snap-fit ​​protrusion (321) snaps into the snap-fit ​​groove (121).

4. The charging gun according to claim 3, characterized in that, The snap-fit ​​protrusion (321) has a mounting surface (321a) on the side facing the insertion cavity (11). Along the direction away from the insertion cavity (11), the distance between the mounting surface (321a) and the buckle (32) gradually increases.

5. The charging gun according to claim 2, characterized in that, The bottom (13) of the receiving cavity (12) has a plurality of through holes (130), and each of the insertion cavities (11) is connected to the receiving cavity (12) through one of the through holes (130); The sealing element (3) abuts against the side of the cavity bottom (13) facing the receiving cavity (12), and the buckle (32) abuts against the end of the snap-fit ​​groove (121) away from the insertion cavity (11).

6. The charging gun according to any one of claims 1-5, characterized in that, The sealing element (3) includes a plate (31) and a plurality of first sleeves (33), the first sleeves (33) being fixed to the plate (31), each first sleeve (33) covering the connection point of the terminal (21) of the wiring assembly (2) and the cable (22).

7. The charging gun according to claim 6, characterized in that, The first sleeve (33) is fixed to the side of the plate (31) facing the insertion cavity (11).

8. The charging gun according to claim 7, characterized in that, The bottom (13) of the receiving cavity (12) includes a plurality of second sleeves (131). The second sleeve (131) has a through hole (130), and each of the insertion cavities (11) communicates with the receiving cavity (12) through one of the through holes (130). The second sleeve (131) is fitted around the first sleeve (33).

9. The charging gun according to claim 1, characterized in that, The plurality of wiring assemblies (2) include at least one high-voltage wiring assembly and at least one low-voltage wiring assembly.

10. A charging system, characterized in that, The charging system includes a charging gun as described in any one of claims 1-9.

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