Electric vehicle split type direct current charging pile

Abstract

This application relates to the field of charging pile technology and discloses a split-type DC charging pile for electric vehicles, including a lower fixed body and an upper fixed body. Both the top and bottom of the lower fixed body and the upper fixed body have fixing cavities. A protective mechanism is movably arranged between the fixing cavities of the lower and upper fixed bodies. There are two protective mechanisms, symmetrically arranged with the charging terminal as the central axis. This invention, by setting a lower fixed body at the bottom of the charging pile and an upper fixed body at the top, and movably arranging the protective mechanism between the lower and upper fixed bodies, allows the protective mechanism to move to the side of the charging pile when the charging terminal is not charging. This effectively enables the protective mechanism to work with the lower and upper fixed bodies to enclose the charging gun, thus protecting the charging gun from direct exposure to the outdoors and extending its service life.

Description

Technical Field

[0001] This application relates to the field of charging pile technology, and in particular to a split-type DC charging pile for electric vehicles. Background Technology

[0002] With the rapid development of new energy electric vehicles, the market demand for vehicle charging power is increasing. To meet the high-power charging requirements of electric vehicles, many split-type DC charging piles have been installed in public buildings, shopping malls, public parking lots, and residential parking lots. A split-type DC charging pile separates the AC / DC power conversion and DC output control into two individual units, connected by cables to form a complete charging pile. The part that performs AC / DC power conversion in the split-type DC charging pile is called the rectifier cabinet, which is generally provided in a standard cabinet format and is suitable for indoor installation. The part that performs DC output control in the split-type DC charging pile is called the charging terminal, which provides a user interface and DC output interface and is typically installed and used outdoors.

[0003] However, existing split-type DC charging piles still have some drawbacks in use: First, the charging guns in existing charging terminals are usually fixed to the outer wall of the charging pile body, causing the charging guns to be directly exposed to the outside, making them susceptible to the influence of the external environment, such as wind and rain, which affects their service life; Second, the existing ventilation openings are generally located on the side of the charging pile body, especially below the charging gun. During the rainy season, moisture can easily enter the interior of the charging pile body through the ventilation openings, thereby damaging its internal components. Summary of the Invention

[0004] This application proposes a split-type DC charging pile for electric vehicles, which effectively protects the charging gun, extends its service life, and filters the air entering the ventilation opening to reduce moisture damage to the internal parts of the charging pile. This solves the problem that charging terminals located outdoors are easily damaged by wind and rain.

[0005] To achieve the above objectives, this application adopts the following technical solution: a split-type DC charging pile for electric vehicles, comprising:

[0006] A charging terminal, comprising a charging pile body and a charging gun, wherein the charging pile body is connected to a charging gun on both sides;

[0007] The lower fixing body and the upper fixing body are fixedly sleeved on the lower half of the charging pile body and the upper fixing body is fixedly sleeved on the upper half of the charging pile body.

[0008] The protection mechanism has a fixed cavity at the top of the lower fixed body and the bottom of the upper fixed body, and a protection mechanism is movably arranged between the fixed cavity of the lower fixed body and the fixed cavity of the upper fixed body. There are two protection mechanisms, and the two protection mechanisms are symmetrically arranged with the charging terminal as the central axis.

[0009] When the charging terminal is not working, the two protection mechanisms are moved to the sides of the charging terminal respectively, in conjunction with the lower and upper fixing bodies, to enclose the charging gun and improve its protection.

[0010] Furthermore, the protection mechanism includes:

[0011] The protective layer is made of a deformable material. The length of the protective layer is longer than the length of the fixed cavity section covering the side of the charging pile, and the height of the protective layer is equal to the distance between the two fixed cavities.

[0012] The protective layer has connecting shafts fixedly connected to both ends, and the two ends of the connecting shafts are respectively movably sleeved with two fixed cavities.

[0013] The loading tube has several protective cavities at the top of the protective layer, and the protective layer is movably connected to the loading tube through the protective cavities. The wall of the loading tube has filter holes, and the wall of the protective layer with the protective cavities has air holes. The interior of the loading tube is filled with desiccant.

[0014] Furthermore, the lower fixing body and the upper fixing body are components of the fixing mechanism.

[0015] Furthermore, the fixing mechanism also includes:

[0016] A weighing sensor is fixedly embedded in the fixed cavity of the lower fixed body.

[0017] Since the weighing sensor is fixedly installed in the fixed cavity of the lower fixed body, it can measure the weight of the protection mechanism in real time. When the weight of the protection mechanism increases due to moisture absorption until it exceeds the set value, the weighing sensor will transmit a signal to the charging terminal so that the charging terminal can remind the staff to replace the desiccant in the loading tube in time.

[0018] Furthermore, the fixing mechanism also includes:

[0019] The fixing component has a fixing groove at the top of the upper fixing body located behind the charging terminal, and the fixing groove is connected to the fixing cavity. The upper fixing body is movably engaged with the fixing component through the fixing groove.

[0020] Since the loading tube is movably located within the protective cavity of the protective layer, and the fixing component is movably located within the upper fixing body, when the desiccant in the loading tube fails, the operator moves the protective mechanism to below the fixing component, then disassembles the fixing component, removes the loading tube from the protective layer, and then heats the desiccant to restore its moisture absorption effect, thereby improving the reusability of the protective mechanism and the desiccant inside.

[0021] Furthermore, the charging terminal, fixing mechanism, and protection mechanism are components of the working device.

[0022] Furthermore, the working device also includes:

[0023] The charging pile body is provided with a support mechanism at each of its four corners. The support mechanism is located between the lower fixed body and the upper fixed body and is used to fill the gap between the charging pile body and the protection mechanism. The support mechanisms located on the left and right sides of the charging pile body work alternately.

[0024] Furthermore, the support mechanism includes:

[0025] A connecting plate is provided for each of the support mechanisms. The two connecting plates are fixedly connected to the adjacent walls of the charging pile body, and the two connecting plates are at a 90° angle to each other.

[0026] An air pump is fixedly installed inside the connecting plate, and one air pump is used for air intake and another air pump is used for air exhaust within the same support mechanism. A ventilation opening is provided on the side of the charging pile body, and the ventilation opening is located below the charging gun. Several horizontal holes communicating with the air pump are provided inside the connecting plate, and the horizontal holes communicating with the air pump used for air intake are biased towards the ventilation opening. The two air pumps located within the same support mechanism work alternately.

[0027] The two connecting plates are connected by a connecting bladder, and one side of the wall of the connecting bladder is attached to the protection mechanism, while the other side of the wall of the connecting bladder is attached to the charging pile body. The connecting bladder has a connecting cavity inside and is made of expandable rubber material.

[0028] By installing support mechanisms at all four corners of the charging pile body, and each support mechanism consisting of a connecting plate, an air pump, and a connecting bladder, when the support mechanism is not in operation, it fills the gap between the protection mechanism and the charging terminal because it is located between the protection mechanism and the charging terminal. This not only effectively enhances the airtightness of the space formed by the protection mechanism, the lower fixed body, and the upper fixed body, further reducing the ingress of moisture, but also effectively supports the protection mechanism, further improving the protection effect on the charging pile body and the charging gun. When the support mechanism is in operation, the support mechanisms located on the left and right sides of the charging pile body work alternately, thereby effectively expelling hot air from the charging pile body to enhance the heat dissipation effect inside the charging pile body. At the same time, the connecting bladder will intermittently expand during operation, thereby effectively vibrating the protection mechanism and causing the desiccant in the loading tube to vibrate, thereby improving the desiccant mass transfer efficiency and optimizing the contact effect, thus further improving the desiccant filtration and dehumidification effect.

[0029] Furthermore, it also includes a rectifier cabinet and cables, with the rectifier cabinet and the charging terminal connected by cables.

[0030] The beneficial effects of this invention are as follows:

[0031] This application provides a split-type DC charging pile for electric vehicles. By setting a lower fixing body at the bottom of the charging pile body and an upper fixing body at the top of the charging pile body, a protective mechanism is movably set between the lower fixing body and the upper fixing body. When the charging terminal is not charging, the protective mechanism is moved to the side of the charging pile body, which effectively prompts the protective mechanism to cooperate with the lower fixing body and the upper fixing body to wrap around the charging gun, thereby protecting the charging gun from direct exposure to the outdoors and being affected by the external environment, and extending the service life of the charging gun.

[0032] The protection mechanism is designed to consist of a protective layer, a connecting shaft, and a loading tube. Because the loading tube is made of rigid material and contains a desiccant, when the charging terminal is not charging, the protection mechanism is located on the side of the charging pile. It effectively uses the desiccant in the loading tube to filter the air, thereby fully absorbing moisture in the air, reducing the speed at which moisture enters the charging pile, and improving the protection of the internal parts of the charging pile. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort:

[0034] Figure 1 This is a three-dimensional structural diagram of the entire invention;

[0035] Figure 2 This is a three-dimensional structural diagram of the rectifier cabinet, cable, and charging terminal in this invention;

[0036] Figure 3 This is a three-dimensional structural diagram of the working device in this invention;

[0037] Figure 4 This is a side sectional perspective view of the working device in this invention.

[0038] Figure 5 This is a frontal cross-sectional perspective view of the working device in this invention.

[0039] Figure 6 This is a top sectional three-dimensional structural diagram of the working device in this invention;

[0040] Figure 7 In this invention Figure 6 Enlarged structural diagram at point A;

[0041] Figure 8 This is a three-dimensional structural diagram of the fixing mechanism, protection mechanism, and support mechanism in this invention;

[0042] Figure 9 This is a side view sectional perspective structural diagram of the fixing mechanism, protection mechanism, and support mechanism in this invention;

[0043] Figure 10 This is a front cross-sectional perspective view of the fixing mechanism, protection mechanism, and support mechanism in this invention.

[0044] Figure 11 This is a top sectional three-dimensional structural view of the fixing mechanism, protection mechanism, and support mechanism in this invention;

[0045] Figure 12 This is a three-dimensional structural diagram showing the separation of the fixing mechanism and the protection mechanism in this invention;

[0046] Figure 13 This is a three-dimensional structural diagram of the support mechanism in this invention.

[0047] In the diagram: 1. Working device; 2. Rectifier cabinet; 3. Cable; 4. Charging terminal; 41. Charging pile body; 42. Charging gun; 5. Fixing mechanism; 51. Lower fixing body; 52. Upper fixing body; 53. Fixing component; 6. Protection mechanism; 61. Protective layer; 62. Connecting shaft; 63. Loading pipe; 7. Supporting mechanism; 71. Connecting plate; 72. Air pump; 73. Connecting bladder. Detailed Implementation

[0048] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] Example 1: A split-type DC charging pile for electric vehicles includes a rectifier cabinet 2, a cable 3, and a charging terminal 4, such as... Figures 1-2 The rectifier cabinet 2 and the charging terminal 4 are connected by a cable 3. When working, the rectifier cabinet 2 converts AC power into DC power, and then transmits it to the charging terminal 4 through the cable 3. The processed current is input into the electric vehicle through the charging gun 42 in the charging terminal 4. That is, the split DC charging pile can separate the core power unit from the charging terminal, so as to achieve the effect of centralized power supply and decentralized layout.

[0050] like Figure 2 The charging terminal 4 includes a charging pile body 41 and a charging gun 42. The back of the charging pile body 41 is detachable, which facilitates the maintenance of the parts inside the charging pile body 41. The charging gun 42 is connected to both sides of the charging pile body 41. The charging gun 42 is composed of a power transmission cable and a charging head. When not in use, the power transmission cable can be wound around the charging pile body 41 for easy storage.

[0051] like Figure 1 The charging terminal 4 is externally equipped with a fixing mechanism 5, which is used to limit and support the protection mechanism 6, thereby restricting the movement path of the protection mechanism 6. The fixing mechanism 5 includes a lower fixing body 51 and an upper fixing body 52, such as... Figures 3-6 , Figures 8-12 The lower half of the charging pile body 41 is fixedly sleeved with a lower fixing body 51, and the upper half of the charging pile body 41 is fixedly sleeved with an upper fixing body 52. ​​The setting of the lower fixing body 51 and the upper fixing body 52 can not only enhance the stability of the charging terminal 4, but also help to block wind and rain.

[0052] like Figure 1 , Figures 3-12 The top of the lower fixing body 51 and the bottom of the upper fixing body 52 are both provided with fixing cavities. The bottom of the protection mechanism 6 is movably engaged with the fixing cavity of the lower fixing body 51, and the top of the protection mechanism 6 is movably engaged with the fixing cavity of the upper fixing body 52. ​​There are two protection mechanisms 6, and the two protection mechanisms 6 are symmetrically arranged with the charging terminal 4 as the central axis.

[0053] In summary, the charging terminal 4, the fixing mechanism 5, and the protection mechanism 6 are components of the working device 1. When the charging terminal 4 is not working, the two protection mechanisms 6 are moved to both sides of the charging terminal 4 to cooperate with the lower fixing body 51 and the upper fixing body 52 to cover the charging gun 42, improve the protection of the charging gun 42, prevent the charging gun 42 from being directly exposed to the outdoors and affected by the external environment, and extend the service life of the charging gun 42.

[0054] Example 2, based on Example 1, such as Figures 3-12 The protection mechanism 6 includes a protective layer 61, connecting shafts 62, and a loading tube 63. The protective layer 61 is made of a deformable material. Utilizing the material design of the protective layer 61, its curvature can be adjusted according to its position within the fixed cavity, ensuring smooth movement of the protective layer 61. The length of the protective layer 61 is longer than the fixed cavity section covering the side of the charging pile body 41, and the height of the protective layer 61 is equal to the distance between the two fixed cavities. Therefore, when the protective layer 61 is located on the side of the charging pile body 41, it can completely cover the charging gun 42 and seal the space, effectively protecting the charging gun 42. Connecting shafts 62 are fixedly connected to both ends of the protective layer 61, and the two ends of the connecting shafts 62 are movably sleeved with the two fixed cavities respectively. The two connecting shafts 62 effectively support the protective layer 61, ensuring its stability between the lower fixed body 51 and the upper fixed body 52. ​​Several protective cavities are formed at the top of the protective layer 61, and the protective layer 61 connects to the loading tube 63 through these protective cavities. The loading tube 63 is movably connected, allowing operators to remove or install it. The wall of the loading tube 63 has filter holes, and the wall of the protective layer 61, which contains the protective cavity, has air pores, allowing air to pass through the protective layer 61 and loading tube 63 from one side to the other. The loading tube 63 is filled with a desiccant, which is a renewable particulate material, such as a molecular sieve desiccant. The molecular sieve desiccant is a synthetic zeolite with uniform pore size, which still efficiently absorbs moisture at low temperatures, thus filtering the air passing through the protective mechanism 6. When the molecular sieve fails, it can be baked at 250-300℃ for several hours to deeply dehydrate and restore its moisture absorption effect. Another desiccant is silica gel granules, which are porous silica, non-toxic and odorless, with a moisture absorption rate of approximately 32% and an unlimited lifespan, thus filtering the air passing through the protective mechanism 6. When the silica gel granules fail, they can be baked at 120℃ for several hours to deeply dehydrate and restore their moisture absorption effect.

[0055] like Figures 3-5 , Figures 8-10 , Figure 12The fixing mechanism 5 also includes a weighing sensor. A weighing sensor is fixedly embedded in the fixing cavity of the lower fixing body 51. As the weight of the desiccant increases after absorbing moisture, when the weight of the protection mechanism 6 exceeds the set value, that is, when the desiccant in the loading tube 63 becomes saturated with water and fails, the weighing sensor transmits a signal to the charging terminal 4. Finally, the charging terminal 4 sends a signal to the staff to remind them to replace the desiccant in the loading tube 63 in a timely manner.

[0056] like Figures 3-5 , Figures 8-10 , Figure 12 The fixing mechanism 5 also includes a fixing member 53. The top of the upper fixing body 52 located behind the charging terminal 4 has a fixing groove, and the fixing groove is connected to the fixing cavity. The upper fixing body 52 is movably engaged with the fixing member 53 through the fixing groove. When the loading tube 63 fails and needs to be replaced, the protection mechanism 6 can be moved to the rear of the charging terminal 4, that is, below the fixing member 53. At this time, the staff can remove the fixing member 53 from the upper fixing body 52. ​​Then the loading tube 63 can be extracted from the protective layer 61 and a new loading tube 63 can be replaced. The desiccant in the old loading tube 63 needs to be regenerated.

[0057] Example 3, based on Example 2, such as Figures 3-13 Support mechanisms 7 are provided at each of the four corners of the charging pile body 41, and the support mechanisms 7 are components of the working device 1. The support mechanisms 7 are located between the lower fixed body 51 and the upper fixed body 52, and are used to fill the gap between the charging pile body 41 and the protection mechanism 6. This not only effectively enhances the airtightness of the space formed by the protection mechanism 6, the lower fixed body 51, and the upper fixed body 52, further reducing the entry of moisture, but also effectively supports the protection mechanism 6, further improving the protection effect on the charging pile body 41 and the charging gun 42. The support mechanisms 7 located on the left and right sides of the charging pile body 41 work alternately, thereby causing the airflow to move unidirectionally within the charging pile body 41, so as to fully introduce cold airflow and expel hot airflow. The support mechanism 7 includes a connecting plate 71, an air pump 72, and a connecting bladder 73, as shown in the figure. Figures 6-7 , Figure 13Each support mechanism 7 has two connecting plates 71, which are fixedly connected to adjacent walls of the charging pile body 41. The two connecting plates 71 are at a 90-degree angle to each other, which can effectively ensure the stability of the connecting plates 71. An air pump 72 is fixedly installed inside each connecting plate 71. One air pump 72 in the same support mechanism 7 is used for air intake, and the other air pump 72 is used for air exhaust. Ventilation openings are provided on the side of the charging pile body 41, and the ventilation openings are located below the charging gun 42. Several horizontal holes communicating with the air pumps 72 are provided inside the connecting plates 71. The horizontal holes communicating with the air pumps 72 are biased towards the ventilation openings, thereby effectively absorbing the hot airflow inside the charging pile body 41. The two air pumps 72 in the same support mechanism 7 work alternately. When the support mechanism 7 is working, the air pump 72 used for air intake works first, continuously absorbing the airflow from the side of the charging pile body 41. The air pump 72 used for intake stops working while the air pump 72 used for exhaust starts working, continuously expelling the accumulated air to the front or rear of the charging pile body 41. This process is repeated to continuously expel the hot air inside the charging pile body 41, thereby enhancing the heat dissipation effect inside the charging pile body 41. The two connecting plates 71 are connected by a connecting bladder 73, with one side of the wall of the connecting bladder 73 fitting against the protection mechanism 6 and the other side of the wall of the connecting bladder 73 fitting against the charging pile body 41. The connecting bladder 73 has a connecting cavity inside and is made of expandable rubber. When the support mechanism 7 is working, the connecting bladder 73 will intermittently expand during the working process due to the alternating operation of the two air pumps 72, effectively vibrating the protection mechanism 6 and causing the desiccant in the loading tube 63 to vibrate, thereby improving the mass transfer efficiency of the desiccant, optimizing the contact effect, and further improving the filtration and dehumidification effect of the desiccant.

[0058] The working principle of the method of using this invention is as follows:

[0059] When the charging terminal 4 needs to work, the two protection mechanisms 6 are moved along the fixed cavity to the rear of the charging pile body 41 to facilitate the operator's use of the charging gun 42. After the charging terminal 4 has finished working, that is, when the charging terminal 4 is not working, the two protection mechanisms 6 are moved along the fixed cavity to both sides of the charging pile body 41, and cooperate with the lower fixed body 51 and the upper fixed body 52 to wrap the charging gun 42, so as to protect the charging gun 42, prevent the charging gun 42 from being directly exposed to the outdoors and affected by the external environment, and extend the service life of the charging gun 42.

[0060] When the protection mechanism 6 is located on both sides of the charging pile body 41, because the loading tube 63 is filled with desiccant, the air passes through the protection mechanism 6 before entering the ventilation port of the charging pile body 41. The desiccant filters the air, thereby fully absorbing the moisture in the air, reducing the speed at which moisture enters the charging pile body 41, and improving the protection of the internal parts of the charging pile body 41. If the weighing sensor receives a weight of the protection mechanism 6 that exceeds the set value in real time, that is, the desiccant in the loading tube 63 is saturated with water and fails, the protection mechanism 6 must first be moved to the underside of the fixing member 53, then the fixing member 53 must be removed, and the loading tube 63 in the protective layer 61 must be taken out to replace it with a new loading tube 63. Then the fixing member 53 is restored to its original state, and the protection mechanism 6 returns to its original position. The failed desiccant needs to be heated to restore its moisture absorption function, thereby improving the reusability of the protection mechanism 6.

[0061] When the protection mechanism 6 is located on both sides of the charging pile body 41, the support mechanism 7, positioned between the protection mechanism 6 and the charging terminal 4, fills the gap between them. This not only effectively enhances the airtightness of the space formed by the protection mechanism 6, the lower fixing body 51, and the upper fixing body 52, further reducing moisture ingress, but also effectively supports the protection mechanism 6, further improving the protection effect on the charging pile body 41 and the charging gun 42. When the support mechanism 7 is activated, the support mechanisms 7 located on the left and right sides of the charging pile body 41 work alternately, effectively unidirectionally expelling hot air from the charging pile body 41 to enhance the heat dissipation effect inside the charging pile body 41. Specifically, one support... When mechanism 7 is working, the air pump 72 for intake works first, continuously absorbing air from the side of the charging pile body 41 and accumulating the gas in the connecting bladder 73. Then, the air pump 72 for intake stops working and the air pump 72 for exhaust starts working, thereby venting the accumulated air to the front or rear of the charging pile body 41. This process is repeated to exhaust the hot air in the charging pile body 41 and achieve sufficient heat dissipation for the charging terminal 4. During this process, the connecting bladder 73 will expand intermittently, thereby effectively vibrating the protection mechanism 6 and causing the desiccant in the loading tube 63 to vibrate, thereby improving the mass transfer efficiency of the desiccant, optimizing the contact effect, and further improving the filtration and dehumidification effect of the desiccant.

[0062] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A split-type DC charging pile for electric vehicles, characterized in that, include: The charging terminal (4) includes a charging pile body (41) and a charging gun (42), and the charging gun (42) is connected to both sides of the charging pile body (41). The lower fixing body (51) and the upper fixing body (52) are fixedly sleeved on the lower half of the charging pile body (41) and the upper half of the charging pile body (41) is fixedly sleeved on the upper fixing body (52). The protection mechanism (6) has a fixed cavity at the top of the lower fixed body (51) and the bottom of the upper fixed body (52), and the protection mechanism (6) is movably arranged between the fixed cavity of the lower fixed body (51) and the fixed cavity of the upper fixed body (52). The number of the protection mechanism (6) is two, and the two protection mechanisms (6) are symmetrically arranged with the charging terminal (4) as the central axis. When the charging terminal (4) is not working, the two protection mechanisms (6) are moved to the two sides of the charging terminal (4) respectively, in order to cooperate with the lower fixing body (51) and the upper fixing body (52) to wrap the charging gun (42) and improve the protection of the charging gun (42).

2. The electric vehicle split-type DC charging pile according to claim 1, characterized in that, The protection mechanism (6) includes: The protective layer (61) is made of a deformable material. The length of the protective layer (61) is longer than the length of the fixed cavity section covering the side of the charging pile body (41), and the height of the protective layer (61) is equal to the distance between the two fixed cavities. The connecting shaft (62) is fixedly connected to both ends of the protective layer (61), and the two ends of the connecting shaft (62) are respectively movably sleeved with the two fixed cavities; The loading tube (63) has several protective cavities at the top of the protective layer (61), and the protective layer (61) is movably connected to the loading tube (63) through the protective cavities. The wall of the loading tube (63) has filter holes, and the wall of the protective layer (61) with protective cavities has air holes. The interior of the loading tube (63) is filled with desiccant.

3. The electric vehicle split-type DC charging pile according to claim 2, characterized in that, The lower fixing body (51) and the upper fixing body (52) are components of the fixing mechanism (5).

4. The electric vehicle split-type DC charging pile according to claim 3, characterized in that, The fixing mechanism (5) also includes: A weighing sensor is fixedly embedded in the fixed cavity of the lower fixed body (51).

5. The electric vehicle split-type DC charging pile according to claim 4, characterized in that, The fixing mechanism (5) also includes: The fixing part (53) has a fixing groove at the top of the upper fixing body (52) located behind the charging terminal (4), and the fixing groove is connected to the fixing cavity. The upper fixing body (52) is movably engaged with the fixing part (53) through the fixing groove.

6. The electric vehicle split-type DC charging pile according to claim 5, characterized in that, The charging terminal (4), fixing mechanism (5), and protection mechanism (6) are components of the working device (1).

7. The electric vehicle split-type DC charging pile according to claim 6, characterized in that, The working device (1) further includes: Support mechanism (7): Support mechanism (7) is provided at each of the four corners of the charging pile body (41). The support mechanism (7) is located between the lower fixed body (51) and the upper fixed body (52). The support mechanism (7) is used to fill the gap between the charging pile body (41) and the protection mechanism (6). The support mechanisms (7) located on the left and right sides of the charging pile body (41) work alternately.

8. The electric vehicle split-type DC charging pile according to claim 7, characterized in that, The support mechanism (7) includes: Connecting plate (71), one of the support mechanisms (7) is provided with two connecting plates (71), the two connecting plates (71) are fixedly connected to the adjacent wall of the charging pile body (41), and the two connecting plates (71) are at a 90° angle to each other; An air pump (72) is fixedly installed inside a connecting plate (71), and one air pump (72) located in the same support mechanism (7) is used for air intake and another air pump (72) is used for air exhaust. The side of the charging pile body (41) is provided with a ventilation port, and the ventilation port is located below the charging gun (42). The connecting plate (71) is provided with several horizontal holes that communicate with the air pump (72), and the horizontal holes that communicate with the air pump (72) used for air intake are biased towards the ventilation port. The two air pumps (72) located in the same support mechanism (7) work alternately. The two connecting plates (71) are connected by the connecting bladder (73), and one side of the wall of the connecting bladder (73) is attached to the protection mechanism (6), and the other side of the wall of the connecting bladder (73) is attached to the charging pile body (41). The connecting bladder (73) has a connecting cavity inside, and the connecting bladder (73) is made of expandable rubber material.

9. The electric vehicle split-type DC charging pile according to claim 1, characterized in that, It also includes a rectifier cabinet (2) and a cable (3), which are connected to the charging terminal (4) via the cable (3).

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