Charging gun needle and charging gun

Abstract

The utility model discloses a charging gun needle and a charging gun, and relates to the technical field of new energy equipment, specifically, the charging gun needle comprises a needle part used for being connected with a vehicle charging port in an inserted mode for electric conduction and a base part used for being fixedly connected with the charging gun, and the needle part and the base part are fixedly connected with each other; a first flow channel and a second flow channel are arranged in the needle part in the length direction, and the first flow channel and the second flow channel are communicated at the far end of the needle part; a first cavity and a second cavity which are respectively communicated with the first flow channel and the second flow channel are arranged in the base part; the first cavity and the second cavity are respectively provided with a first communicating hole and a second communicating hole which are used for connecting pipelines; according to the charging gun pin and the charging gun, the runner capable of directly introducing the refrigerating medium is arranged in the gun pin, so that circulation of the refrigerating medium in the gun pin is realized, direct heat dissipation of the gun pin is further realized, and the heat dissipation effect of the gun pin is ensured.

Description

Technical Field

[0001] This utility model relates to the field of new energy equipment technology, and more specifically, to a charging gun needle. Furthermore, this utility model also relates to a charging gun including the aforementioned charging gun needle. Background Technology

[0002] With the development of new energy supercharging technology, the charging power and speed of new energy charging piles are increasing daily. However, with the increase in charging power, the heat generated by charging equipment is also increasing. In existing technologies, air cooling or liquid cooling is mostly used to solve the heat dissipation problem of charging equipment. However, the heat dissipation location is mainly the power module of the charging equipment. Only some equipment dissipates heat for the charging cable or charging gun. However, the charging needle, as the position where the charging gun directly contacts the new energy charging port, is rarely directly cooled by manufacturers due to its own structural limitations. Most manufacturers rely on its own thermal conductivity and the internal heat dissipation system of the charging gun for heat dissipation. However, for high-power supercharging equipment, the contact position between the charging needle and the vehicle charging port also generates a lot of heat. Relying solely on the thermal conductivity of the charging needle and the heat dissipation system inside the charging gun head is difficult to meet the heat dissipation requirements. In severe cases, it can cause the charging port of the new energy vehicle to melt down, resulting in significant losses.

[0003] In conclusion, how to solve the problem of direct heat dissipation of the charging gun needles is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a charging gun needle, which adopts a flow channel inside the needle that allows the cooling medium to flow directly in, so as to realize the circulation of the cooling medium inside the needle, thereby achieving direct heat dissipation of the needle and ensuring its heat dissipation effect.

[0005] Another objective of this invention is to provide a charging gun that includes the aforementioned charging gun needle, possesses the same technical features, and can solve the same technical problem.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A charging gun needle and a charging gun, comprising a conductive needle portion for insertion into a vehicle charging port and a base portion for fixed connection with the charging gun, wherein the needle portion and the base portion are fixedly connected to each other.

[0008] The needle portion is provided with a first flow channel and a second flow channel along its length, and the first flow channel and the second flow channel are connected at the distal end of the needle portion.

[0009] The base is provided with a first chamber and a second chamber that are respectively connected to the first flow channel and the second flow channel. The first chamber and the second chamber are respectively provided with a first connecting hole and a second connecting hole for connecting pipes.

[0010] Preferably, a fourth flow channel is provided between the first chamber and the second chamber, and the minimum flow cross-sectional area of ​​the fourth flow channel is smaller than the minimum flow cross-sectional area of ​​the first flow channel, the second flow channel and the connection position between the two.

[0011] Preferably, a third flow channel is provided at the distal end of the needle portion, the two ends of the third flow channel are respectively connected to the first flow channel and the second flow channel, and the cross-sectional area of ​​the third flow channel is equal to the cross-sectional area of ​​the first flow channel and the second flow channel.

[0012] Preferably, the distal end of the needle is provided with a blind hole, and two through holes are provided parallel to each other at the bottom of the blind hole, the two through holes serving as the first flow channel and the second flow channel respectively;

[0013] The blind hole is sealed with a first end sealing plug, and a cavity is provided between the bottom end of the first end sealing plug and the bottom wall of the blind hole. The cavity is connected to the two sets of through holes.

[0014] Preferably, a through hole is provided inside the needle portion, and a second end sealing plug is fixedly provided inside the through hole;

[0015] The second end sealing plug includes a second partition plate and a plug body that are fixedly connected to each other. The second partition plate is inserted into the proximal end of the through hole to divide the through hole into the first flow channel and the second flow channel. The end of the second partition plate near the plug body is provided with a third connecting hole that connects the two flow channels. The plug body is fixedly and sealingly disposed at the distal end of the through hole.

[0016] Preferably, the base is provided with an opening groove, and a first partition plate is provided in the opening groove to divide the opening groove into a first chamber and a second chamber;

[0017] The opening end of the slot is fixedly and sealed with a cover plate, and both the first connecting hole and the second connecting hole are provided on the surface of the cover plate.

[0018] Preferably, one side of the first partition plate is fixedly connected to the bottom of the opening groove, and a gap is provided between the other side of the first partition plate and the cover plate to connect the first chamber and the second chamber.

[0019] Preferably, the opening end of the slot is provided with a stepped mounting base, and the inner wall of the cover plate is in contact with and sealed to the surface of the mounting base.

[0020] Preferably, the cover plate has a folded plate structure, the normal of the first folded plate of the cover plate is perpendicular to the axis of the needle, the normal of the second folded plate of the cover plate forms an obtuse angle with the axis of the needle, and both the first connecting hole and the second connecting hole are disposed on the second folded plate of the cover plate.

[0021] A charging gun, characterized in that it includes the charging gun needle described above.

[0022] The charging gun needle provided by this utility model has at least the following advantages compared with the prior art:

[0023] 1. The needle is equipped with a first flow channel and a second flow channel, which are connected at the distal end of the needle to form a complete circulation channel. This allows the cooling medium to flow from the proximal end of the needle to the distal end and then back, achieving active heat dissipation along the entire length of the needle and thus improving the heat dissipation effect of the needle.

[0024] 2. By setting a first chamber and a second chamber in the base, which are respectively connected to the first flow channel and the second flow channel, and the first chamber and the second chamber are respectively provided with a first connecting hole and a second connecting hole for connecting pipe, the connection position of the gun needle and the refrigerant pipe is set in the base, which solves the problem that the small cross-section of the needle is inconvenient to connect the refrigerant pipe.

[0025] The charging gun provided by this utility model includes the charging gun needle described above and has the same beneficial effects. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of the charging gun needle provided by this utility model;

[0028] Figure 2 A schematic diagram of the end of the charging gun needle provided by this utility model;

[0029] Figure 3 for Figure 2 Sectional view at point AA;

[0030] Figure 4 for Figure 3 Sectional view at point BB;

[0031] Figure 5 for Figure 3 Sectional view at CC;

[0032] Figure 6 for Figure 3 Sectional view at point DD;

[0033] Figure 7 A schematic diagram of another embodiment of the charging gun needle provided by this utility model;

[0034] Figure 8 for Figure 7 Sectional view at EE;

[0035] Figure 9 for Figure 7 Sectional view at FF;

[0036] Figure 10 for Figure 7 Sectional view at GG point;

[0037] Figure 11 This is a schematic diagram of the structure of the second end sealing plug in this utility model.

[0038] Figures 1-11 middle:

[0039] 1. Needle section; 11. First flow channel; 12. Second flow channel; 13. Third flow channel;

[0040] 2. Base; 21. First chamber; 22. Second chamber; 23. First partition plate; 24. Fourth flow channel; 25. Mounting base;

[0041] 3. Cover plate; 31. First connecting hole; 32. Second connecting hole;

[0042] 4. First end sealing plug;

[0043] 5. Second end sealing plug; 51. Second partition plate; 52. Third connecting hole; 53. Plug body. Detailed Implementation

[0044] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0045] The core of this utility model is to provide a charging gun needle and a charging gun, which adopts a flow channel inside the needle that allows the cooling medium to flow directly in, so as to realize the circulation of the cooling medium in the needle, thereby achieving direct heat dissipation of the needle and ensuring its heat dissipation effect.

[0046] Another core aspect of this utility model is to provide a charging gun that includes the aforementioned charging gun needle, possessing the same technical features and capable of solving the same technical problems.

[0047] Please refer to Figures 1-11 A charging gun needle and a charging gun, comprising a conductive needle 1 for plugging into a vehicle charging port and a base 2 for fixed connection with the charging gun, wherein the needle 1 and the base 2 are fixedly connected to each other.

[0048] A first flow channel 11 and a second flow channel 12 are provided along the length direction inside the needle part 1, and the first flow channel 11 and the second flow channel 12 are connected at the distal end of the needle part 1.

[0049] The base 2 is provided with a first chamber 21 and a second chamber 22 that are respectively connected to the first flow channel 11 and the second flow channel 12. The first chamber 21 and the second chamber 22 are respectively provided with a first connecting hole 31 and a second connecting hole 32 for connecting pipes.

[0050] like Figure 6 and Figure 9 As shown, by setting a first flow channel 11 and a second flow channel 12 inside the needle part 1 of the gun needle, and connecting the first flow channel 11 and the second flow channel 12 at the distal end of the needle part 1, the cooling medium can enter from the root of the first flow channel 11, flow through the first flow channel 11 to the distal end of the needle part 1, enter the second flow channel 12 at the distal end, and return to the proximal end of the needle part 1 through the second flow channel 12, thereby realizing the circulation of the cooling medium in the needle part 1. During the circulation process, it exchanges heat with the needle part 1, thereby removing the heat from the needle part 1 and realizing the heat dissipation of the gun needle.

[0051] Meanwhile, since the transverse cross-section of the needle part 1 is small and cannot accommodate the pipe connection of two sets of flow channels at the same time, a first chamber 21 and a second chamber 22 are set at the base 2, which are respectively connected to the first flow channel 11 and the second flow channel 12. The first connecting hole 31 and the second connecting hole 32 for pipe connection are respectively set on the first chamber 21 and the second chamber 22. That is, the pipe is installed by utilizing the larger cross-sectional area of ​​the base 2. At the same time, the cooling medium in the first chamber 21 and the second chamber 22 can also absorb the heat of the base 2, which can also play a positive role in the overall heat dissipation of the needle.

[0052] In some embodiments, a fourth flow channel 24 is provided between the first chamber 21 and the second chamber 22, and the minimum flow cross-sectional area of ​​the fourth flow channel 24 is smaller than the minimum flow cross-sectional area of ​​the first flow channel 11, the second flow channel 12 and the position where the two are connected.

[0053] like Figure 2 As shown, a fourth flow channel 24 is provided between the first chamber 21 and the second chamber 22. Combined with the limitation of the relative cross-sectional area of ​​the fourth flow channel 24 and the flow channel in the needle 1, while the refrigerant circulates in the needle 1, part of the refrigerant directly returns through the fourth flow channel 24, thereby solving the problem of slow refrigerant circulation speed caused by the small flow rate in the needle 1.

[0054] In some embodiments, a third flow channel 13 is provided at the distal end of the needle portion 1. The two ends of the third flow channel 13 are respectively connected to the first flow channel 11 and the second flow channel 12. The cross-sectional area of ​​the third flow channel 13 is equal to the cross-sectional area of ​​the first flow channel 11 and the second flow channel 12.

[0055] like Figure 6 As shown, a third flow channel 13 is provided inside the distal end of the needle 1. The cross-sectional area is equal to that of the first flow channel 11 and the second flow channel 12, so that the refrigerant can pass smoothly through the flow channel inside the needle 1 without increasing the flow resistance of the refrigerant due to the change in the cross-sectional area inside the flow channel.

[0056] In some embodiments, a blind hole is provided at the distal end of the needle portion 1, and two through holes are provided parallel to each other at the bottom of the blind hole. The two through holes are used as the first flow channel 11 and the second flow channel 12, respectively.

[0057] The blind hole is sealed with a first end sealing plug 4. A cavity is provided between the bottom end of the first end sealing plug 4 and the bottom wall of the blind hole, and the cavity is connected to two sets of through holes.

[0058] like Figure 5 and Figure 6 As shown, when processing the needle part 1, a blind hole is first drilled at the distal end of the needle part 1, and then two through holes are drilled at the bottom of the blind hole. Then, the opening end of the blind hole is sealed with the first end sealing plug 4, so that the two through holes and the cavity at the bottom of the blind hole together form a circulating flow channel for the refrigerant to flow through.

[0059] In some embodiments, a through hole is provided in the needle part 1, and a second end sealing plug 5 is fixedly provided in the through hole;

[0060] The second end sealing plug 5 includes a second partition plate 51 and a plug body 53 that are fixedly connected to each other. The second partition plate 51 is inserted into the proximal end of the through hole to divide the through hole into a first flow channel 11 and a second flow channel 12. A third connecting hole 52 connecting the two flow channels is provided at one end of the second partition plate 51 near the plug body 53. The plug body 53 is fixedly and sealingly disposed at the distal end of the through hole.

[0061] like Figures 7-11As shown, when processing the needle part 1, a through hole is first processed at the distal end of the needle part 1. The through hole is connected to the cavity inside the base part 2. Then, a second end sealing plug 5 is installed in the through hole. The through hole is divided into a first flow channel 11 and a second flow channel 12 by means of a second partition plate 51. At the same time, a third connecting hole 52 is set at the distal end of the second partition plate 51 as a third flow channel 13 to realize the processing of the internal circulation channel of the needle part 1. This processing method is relatively easy.

[0062] In some embodiments, an opening groove is provided in the base 2, and a first partition plate 23 is provided in the opening groove to divide the opening groove into a first chamber 21 and a second chamber 22.

[0063] The opening end of the slot is fixed and sealed with a cover plate 3, and the first connecting hole 31 and the second connecting hole 32 are both provided on the surface of the cover plate 3.

[0064] like Figure 1 , Figure 4 As shown, an opening groove is provided inside the base 2, and a cover plate 3 is provided at the opening end of the opening groove to form a closed cavity. A first partition plate 23 is provided in the cavity to divide the cavity into two chambers, namely a first chamber 21 and a second chamber 22, which are respectively connected to the first flow channel 11 and the second flow channel 12, thereby reducing the processing difficulty of the first chamber 21 and the second chamber 22 in the base 2.

[0065] In some embodiments, one side of the first partition plate 23 is fixedly connected to the bottom of the opening groove, and a gap is provided between the other side of the first partition plate 23 and the cover plate 3 for connecting the first chamber 21 and the second chamber 22.

[0066] like Figure 3 As shown, when fixing the cover plate 3, the cover plate 3 is only fixedly and sealed to the base 2 at its edge. The lower side of the first partition plate 23 is integrally formed with the base 2, while the upper side is left with a certain gap between it and the cover plate 3. This serves as the fourth flow channel 24. Firstly, it avoids the difficulty in ensuring the sealing of the cover plate 3 when it is installed because the upper side of the first partition plate 23 is not coplanar with the sealing surfaces of the base 2 and the cover plate 3. Secondly, it solves the problem that the cross-section of the flow channel inside the needle part 1 is too small to meet the rapid circulation of the refrigerant in the pipe.

[0067] In some embodiments, the opening end of the slot is provided with a stepped mounting base 25, and the inner wall surface of the cover plate 3 is in contact with and sealed to the surface of the mounting base 25.

[0068] like Figure 1 and Figure 4As shown, a stepped mounting base 25 is provided at the opening position of the slot. The stepped surface serves as the sealing mounting surface between the base 2 and the cover plate 3, which facilitates the installation and fixing of the cover plate 3. At the same time, using the stepped surface as the sealing mounting surface helps to reduce the processing difficulty of the mounting surface.

[0069] In some embodiments, the cover plate 3 is a folded plate structure. The normal of the first folded plate of the cover plate 3 is perpendicular to the axis of the needle part 1, and the normal of the second folded plate of the cover plate 3 forms an obtuse angle with the axis of the needle part 1. The first connecting hole 31 and the second connecting hole 32 are both provided on the second folded plate of the cover plate 3.

[0070] like Figure 1 As shown, the cover plate 3 adopts a folded plate structure, and the connecting hole is set on the folded surface of the bend, which facilitates the arrangement of the refrigerant pipe and avoids the joints between the pipe and the connecting hole from gathering near the gun needle, which would cause the space near the gun needle to occupy a large amount of space, thus helping to reduce the size of the gun head.

[0071] In addition to the charging gun needles disclosed in the above embodiments, this utility model also provides a charging gun including the above-mentioned charging gun needles. For the structure of other parts of the charging gun, please refer to the prior art, which will not be described in detail here.

[0072] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0073] The charging gun needle and charging gun provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A charging gun probe, characterized in that, The utility model provides a charging gun needle part and base part fixed connection for vehicle charging port, the needle part and the base part are fixedly connected with each other, the needle part is provided with first flow channel and second flow channel in the length direction, and the first flow channel and the second flow channel are communicated at the distal end position of the needle part, the base part is provided with first chamber and second chamber that are communicated with the first flow channel and the second flow channel respectively, and the first chamber and the second chamber are provided with first communication hole and second communication hole for connecting pipeline respectively. The fourth flow channel (24) is provided between the first chamber (21) and the second chamber (22), and the minimum flow cross-sectional area of the fourth flow channel (24) is smaller than the minimum flow cross-sectional areas of the first flow channel (11), the second flow channel (12) and the position where the first flow channel (11) and the second flow channel (12) are communicated. The distal end position in the needle part (1) is provided with a third flow channel (13), and the two ends of the third flow channel (13) are communicated with the first flow channel (11) and the second flow channel (12) respectively, and the flow cross-sectional area of the third flow channel (13) is equal to the cross-sectional areas of the first flow channel (11) and the second flow channel (12).

2. The charging gun probe of claim 1, wherein, The distal end of the needle part (1) is provided with a blind hole, and two through holes are provided in parallel at the bottom of the blind hole, and the two through holes are used as the first flow channel (11) and the second flow channel (12) respectively.

3. The charging gun probe of claim 1, wherein, The first end sealing plug (4) is sealingly arranged in the blind hole, and a cavity is arranged between the bottom end of the first end sealing plug (4) and the bottom wall of the blind hole, and the cavity is communicated with the two groups of through holes.

4. The charging gun probe of claim 1, wherein, The second end sealing plug (5) is fixedly arranged in the through hole in the needle part (1). The second end sealing plug (5) comprises a second partition plate (51) and a plug body (53) which are fixedly connected with each other, the second partition plate (51) is inserted into the proximal end of the through hole and is used for separating the through hole into the first flow channel (11) and the second flow channel (12), the second partition plate (51) is provided with a third communication hole (52) which is communicated with the flow channels on both sides and is adjacent to one end of the plug body (53), and the plug body (53) is fixedly and sealingly arranged at the distal end of the through hole.

5. The charging gun probe of claim 1, wherein, An opening groove is arranged in the base part (2), and a first partition plate (23) is arranged in the opening groove and is used for separating the opening groove into the first chamber (21) and the second chamber (22). The opening end of the opening groove is fixedly and sealingly provided with a cover plate (3), and the first communication hole (31) and the second communication hole (32) are arranged on the surface of the cover plate (3).

6. The charging gun pin according to any one of claims 1-5, characterized in that, One side of the first partition plate (23) is fixedly connected with the bottom of the opening groove, and a gap is arranged between the other side of the first partition plate (23) and the cover plate (3) and is used for communicating the first chamber (21) and the second chamber (22). ​ 7. The charging gun probe of claim 6, wherein, ​ 8. The charging gun probe of claim 6, wherein, The opening end of the opening slot is provided with a mounting base (25) in the form of a stepped surface, and the inner wall surface of the cover plate (3) is in contact with the surface of the mounting base (25) to seal.

9. The charging gun probe of claim 6, wherein, The cover plate (3) is a folded plate structure, the normal line of the first folded plate of the cover plate (3) is perpendicular to the axis of the needle part (1), the normal line of the second folded plate of the cover plate (3) forms an obtuse angle with the axis of the needle part (1), and the first communication hole (31) and the second communication hole (32) are both arranged on the second folded plate of the cover plate (3).

10. A charging gun, characterized in that, A charging gun needle comprising the charging gun needle according to any one of claims 1-9.

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