Charging device of new energy automobile

Abstract

The invention discloses a charging device for a new energy automobile, and relates to the technical field of new energy automobiles, the charging device comprises a charging pile body, heat dissipation grooves are formed in the upper ends of the left side and the right side of the charging pile body, butt joint cavities are formed in the left side and the right side of the charging pile body, and the interiors of the butt joint cavities are connected with charging guns in a clamped mode. A separating mechanism used for adjusting the position of the charging gun is arranged in the fixing groove. According to the charging device of the new energy automobile, a soft bag with inert gas is arranged in a piston rod, after the temperature in a butt joint cavity rises, the volume of the soft bag is expanded, and a mounting frame is synchronously pushed and moves in the direction close to a protective cover; the limiting block can automatically pop out through the elastic force of the torsion spring and is clamped with the limiting groove in the side of the butt joint cavity, and the output end of the piston rod continues to be propelled due to gas expansion, so that the charging gun is pushed to be separated from the butt joint cavity.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle technology, specifically to a charging device for new energy vehicles. Background Technology

[0002] New energy vehicle charging devices are specialized equipment that provide power conversion and control functions for the power batteries of new energy vehicles. They mainly include charging piles, charging guns, etc. Charging devices are divided into AC charging piles and DC charging piles. During use, due to long-term use, the interface between the charging gun and the charging device of traditional charging devices will wear down, leading to poor contact. When the contact is poor, the temperature at the contact point will rise, which may result in a safety accident.

[0003] To overcome the above-mentioned defects, prior art one (Chinese patent with publication number CN113815442A, publication date 2021-12-21) discloses a charging device for new energy vehicles, including a charging gun housing with a plug at one end. A terminal base is slidably connected inside the charging gun housing, and a plurality of terminals are fixedly connected to the terminal base. The sliding direction of the terminals is parallel to that of the terminal base, and one end of each terminal extends out of the terminal base and is disposed within the plug. The terminal base is connected to a driving component, which drives the terminal base to slide and disengage the terminals from the plug. The terminal base is connected to a temperature sensing device, which automatically disengages the terminals from the plug at abnormally high temperatures, thereby preventing high-temperature terminals from damaging the charging port and plug. Prior art two (with publication number CN1129) (Chinese Patent 18286A, published on 2021-06-08) A charging device for a new energy vehicle includes: a charging gun body; the charging gun includes an integrally formed first cylindrical section and a second cylindrical section; a plurality of pistons are circumferentially arranged in the first cylindrical section near the second cylindrical section, and a push plate is arranged at a predetermined distance from the pistons; a bellows is connected between the pistons and the push plate; the piston includes a piston cylinder and a first push rod, a spring is arranged in the piston cylinder, one end of the spring is connected to the bottom end face inside the piston, the other end of the spring is connected to one end of the first push rod, and the other end of the first push rod is fixedly connected to a buckle; a second push rod is fixedly connected to the end of the push plate away from the bellows through a second connecting rod, and a connection confirmation conductive post is fixedly connected to the end of the second push rod away from the second connecting rod; a plug is connected to the middle position of the end of the push plate away from the bellows. It can automatically monitor whether the temperature at the plug exceeds a threshold and implement over-temperature protection measures, and continue charging after the temperature returns to normal.

[0004] The aforementioned mechanism uses a temperature sensor to detect temperature and provide protection in case of overheating. However, in actual use, if there is poor contact between the charging gun and the charging device, it cannot separate them and provide cooling protection for the charging gun, which may lead to safety accidents during use. Summary of the Invention

[0005] The purpose of this invention is to provide a charging device for new energy vehicles, in order to solve the problem mentioned in the background art that, during the use of traditional charging devices, the interface between the charging gun and the charging device will wear down due to long-term use, leading to poor contact. When the contact is poor, the temperature at the contact point will rise, which may result in a safety accident.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a charging device for a new energy vehicle, comprising a charging pile body, wherein heat dissipation grooves are provided at the upper ends of both the left and right sides of the charging pile body, and docking cavities are provided on both the left and right sides of the charging pile body, wherein a charging gun is engaged and connected inside the docking cavity, and a protective cover is installed on the side of each docking cavity; a fixing groove is provided on the side of the docking cavity inside the charging pile body, and a separation mechanism for adjusting the position of the charging gun is provided inside the fixing groove; a heat dissipation mechanism for blowing air into the protective cover is provided at the bottom end of the protective cover; and a blocking mechanism for shielding and restricting the position of the charging gun is provided on the side of the protective cover.

[0007] Furthermore, the separation mechanism includes a piston rod, which is fixedly connected to the inside of a fixed groove. A mounting bracket is installed at the output end of the piston rod, and a limiting block is rotatably connected inside the mounting bracket. Limiting grooves for placing the limiting block are provided at both the front and rear ends of the charging gun. Adaptive conductive sheets are provided on the end sides of the limiting grooves and the end sides of the limiting block. The volume of the inert gas in the soft bladder inside the piston rod decreases due to the temperature drop. The output end of the piston rod is reset by the elastic force of the reset spring and drives the limiting block to reset its position. The limiting block contacts the side inside the charging pile body in an inclined state. The side inside the charging pile body can push the limiting block to deflect at an angle, which assists the limiting block in resetting its position.

[0008] Furthermore, torsion springs are wound around both the top and bottom of the limiting block, and the limiting block and the mounting bracket form an elastic structure through the elastic force of the torsion springs.

[0009] Furthermore, the mounting bracket and the fixing groove are slidably connected, and the mounting bracket is symmetrical about the vertical central axis of the charging pile body. Since the mounting bracket and the fixing groove are slidably connected, when the angle of the limiting block deflects, the direction of movement of the mounting bracket remains unchanged, and there will be no situation where the side inside the charging pile body restricts the position of the limiting block.

[0010] Furthermore, a return spring is wound around the output end of the piston rod, and the piston rod and the mounting bracket form an elastic structure through the elastic force of the return spring.

[0011] Furthermore, the heat dissipation mechanism includes a stator core, which is fixedly connected to the bottom of the protective cover. Coils are wound on the left and right sides of the stator core, and the magnetic poles of the two sets of coils are opposite. Fixing frames are installed on both the left and right sides of the charging pile body. A rotor core is rotatably connected to the bottom of the fixing frame, and the rotor core is located in the middle position on one side between the coils. The top of the rotor core passes through the fixing frame and is equipped with a fan.

[0012] Furthermore, the fan is located at the bottom of the protective cover and on one side between the stator cores.

[0013] Furthermore, the top and bottom of the protective cover are each equipped with a connecting plate, and both the front and rear ends of the connecting plate are equipped with memory metal strips.

[0014] Furthermore, the shape memory metal strip deforms into an inverted "L" shape when heated, and returns to a horizontal state when at room temperature. The shape memory metal strips are evenly distributed on the sides of the connecting plate, and the sides of adjacent shape memory metal strips are in contact with each other. The shape memory metal strips at the top and bottom of the protective cover change shape due to heat, and the deformed shape memory metal strips are bent, thereby allowing the top and bottom of the protective cover to be in a ventilated state, which helps to dissipate heat from the docking cavity and the inside of the protective cover, reduces heat accumulation, and better protects the charging gun and charging pile body.

[0015] Furthermore, the shielding mechanism includes a mounting box, which is fixedly connected to the front and rear ends of the protective cover. A connecting spring is installed inside the mounting box, and a shielding plate is installed on the side of the connecting spring. The inner side of the shielding plate is arc-shaped. The shielding plate inside the mounting box is connected by the connecting spring. The shielding plate can shield the side of the protective cover, preventing the charging gun from being damaged by impact when not in use, thus better protecting the charging gun. At the same time, the inner side of the shielding plate is arc-shaped, which can keep it in close contact with the side of the charging gun, thereby enabling the shielding plate to better achieve the shielding effect.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. When the soft bladder inside the piston rod is heated, the volume of the inert gas inside the bladder increases, causing the output end of the piston rod to be pushed out. As a result, the mounting bracket moves closer to the protective cover. At the same time, the limiting block is ejected to the tire side by the elastic force of the torsion spring and engages with the limiting groove on the side of the docking cavity. After the limiting block engages with the limiting groove, the output end of the piston rod continues to be pushed forward due to the expansion of the gas. The limiting block continues to resist the charging gun, thereby causing the charging gun to be pushed and separated from the docking cavity, thus separating the poor contact points.

[0017] Furthermore, the inert gas inside the soft capsule shrinks in volume as the temperature drops, causing the piston rod to reset via the reset spring. Simultaneously, the limiting block also resets. The limiting block is restricted by the side inside the charging pile body when it is tilted. The side inside the charging pile body can push the limiting block when it resets, thus enabling the limiting block to quickly reset its position.

[0018] Furthermore, a sliding connection is formed between the mounting bracket and the fixing groove. When the limiting block is deflected by the piston rod, the direction of movement of the mounting bracket remains unchanged, thus preventing the problem of the internal side of the charging pile body affecting the movement of the limiting block due to the overall angular deflection of the limiting block.

[0019] 2. The shape memory metal strips at the top and bottom of the protective cover change shape due to heat. After being heated, the shape memory metal strips are bent inwards, making the top and bottom of the protective cover ventilated. Because the protective cover is ventilated, the docking cavity and the inside of the protective cover can be ventilated and dissipated, reducing heat accumulation. By quickly dissipating heat, the charging gun and charging pile body can be better protected.

[0020] Furthermore, the baffle can shield the sides of the protective cover, preventing the charging gun from being damaged by impact when not in use. After the charging gun is pushed out, the baffle can prevent the charging gun from falling completely and causing impact. At the same time, the inner side of the baffle is curved, which can keep it in close contact with the sides of the charging gun to protect it. Attached Figure Description

[0021] Figure 1 This is a front view structural diagram of the present invention.

[0022] Figure 2 This is a top-view cross-sectional structural diagram of the present invention.

[0023] Figure 3 This is a schematic diagram of the separation mechanism of the present invention.

[0024] Figure 4This is a schematic diagram of the heat dissipation mechanism of the present invention.

[0025] Figure 5 This is a schematic diagram of the separation mechanism of the present invention.

[0026] Figure 6 This is a schematic diagram of the heat dissipation mechanism of the present invention.

[0027] Figure 7 This is a schematic diagram of the shielding mechanism of the present invention.

[0028] Figure 8 This is a schematic diagram of the heat dissipation mechanism of the present invention in a bent state.

[0029] Figure 9 This is a schematic diagram of the shielding mechanism of the present invention.

[0030] In the diagram: 1. Charging pile body; 2. Heat dissipation groove; 3. Charging gun; 4. Docking cavity; 5. Protective cover; 6. Limiting block; 7. Limiting groove; 8. Mounting bracket; 9. Torsion spring; 10. Piston rod; 11. Return spring; 12. Fixing groove; 13. Stator core; 14. Coil; 15. Rotor core; 16. Fixing bracket; 17. Fan; 18. Connecting plate; 19. Memory metal strip; 20. Mounting box; 21. Connecting spring; 22. Baffle plate; 23. Conductive sheet. Detailed Implementation

[0031] 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.

[0032] Example 1: As Figure 1 - Figure 5The technical solution shown addresses the problem of poor contact between the charging gun and the charging device, which prevents separation and cooling protection of the charging gun, potentially leading to safety accidents during use. The new energy vehicle charging device discloses a separation mechanism, including a charging pile body 1. The upper ends of both sides of the charging pile body 1 have heat dissipation grooves 2, and both sides of the charging pile body 1 have docking cavities 4. A charging gun 3 is engaged within the docking cavity 4, and protective covers 5 are installed on the sides of each docking cavity 4. A fixing groove 12 is provided on the side of the docking cavity 4 inside the charging pile body 1, and a separation mechanism for adjusting the position of the charging gun 3 is provided inside the fixing groove 12. The separation mechanism includes a piston rod 10. The piston rod 10 is fixedly connected to the inside of the fixing groove 12. The output end of the piston rod 10 is equipped with a mounting bracket 8, and the mounting bracket 8 is rotatably connected to a limiting block 6. The front and rear ends of the charging gun 3 are provided with limiting grooves 7 for placing the limiting block 6. The end side of the limiting groove 7 and the end side of the limiting block 6 are provided with matching conductive sheets 23. The top and bottom ends of the limiting block 6 are wound with torsion springs 9, and the limiting block 6 and the mounting bracket 8 form an elastic structure through the elastic force of the torsion springs 9. The mounting bracket 8 and the fixing groove 12 are slidably connected, and the mounting bracket 8 is symmetrical about the vertical central axis of the charging pile body 1. The output end of the piston rod 10 is wound with a return spring 11, and the piston rod 10 and the mounting bracket 8 form an elastic structure through the elastic force of the return spring 11.

[0033] In this example, the charging gun 3 is inserted into the docking cavity 4, with the side of the charging gun 3 contacting the inside of the docking cavity 4. Oxidation of the contact surface of the charging gun 3 or the inner side of the docking cavity 4 forms an insulating layer, or wear causes unevenness in the contact surface, increasing contact resistance. This can lead to localized overheating when current flows, potentially causing contact erosion, melting of plastic parts, or even a fire. Therefore, if poor contact occurs between the charging gun 3 and the docking cavity 4, it is necessary to promptly separate the charging gun 3 from the docking cavity 4 to improve the overall safety of the charging pile body 1 during use. Figure 2 and Figure 3 As shown, the piston rod 10 has an inert gas bladder inside. When the temperature inside the docking cavity 4 rises, the bladder expands, causing the output end of the piston rod 10 to be pushed out by the expanding inert gas. The mounting bracket 8 is simultaneously pushed and moves towards the protective cover 5. During this movement, the limiting block 6 automatically pops outwards due to the force of the torsion spring 9 and engages with the limiting groove 7 on the side of the docking cavity 4. After the limiting block 6 engages with the limiting groove 7, the output end of the piston rod 10 continues to advance due to gas expansion, causing the charging gun 3 to be pushed and separated from the docking cavity 4. This separates the poorly contacted points and ensures the safety of the charging pile body 1 during use. Figure 3As shown, the volume of inert gas in the soft bladder inside the piston rod 10 decreases due to the temperature drop. The output end of the piston rod 10 is reset by the elastic force of the reset spring 11, which in turn drives the limiting block 6 to reset its position. The limiting block 6 contacts the side inside the charging pile body 1 when tilted. The side inside the charging pile body 1 can push the limiting block 6 to deflect at an angle, assisting the limiting block 6 in resetting its position. Figure 3 As shown, the mounting bracket 8 and the fixing groove 12 are slidably connected. Therefore, when the angle of the limiting block 6 deflects, the direction of movement of the mounting bracket 8 remains unchanged, and the side inside the charging pile body 1 will not restrict the position of the limiting block 6.

[0034] Example 2: Figure 1 , Figure 2 , Figure 4 and Figure 6 - Figure 8 The technical solution shown addresses the problem of internal temperature rise and inability to dissipate heat quickly due to poor contact inside the docking cavity 4. The charging device for this new energy vehicle discloses a heat dissipation mechanism. A heat dissipation mechanism for blowing air into the interior of the protective cover 5 is provided at the bottom end of the protective cover 5. The heat dissipation mechanism includes a stator core 13, which is fixedly connected to the bottom end of the protective cover 5. Coils 14 are wound around the left and right sides of the stator core 13, with opposite magnetic poles between the two sets of coils 14. Fixing frames 16 are installed on both the left and right sides of the charging pile body 1. A rotor core 15 is rotatably connected to the bottom end of the fixing frame 16. 5 is located at the middle position on one side between coils 14. The top of rotor core 15 passes through the fixing frame 16 and is equipped with a fan 17. The fan 17 is located at the bottom of the protective cover 5 and is located on one side between stator cores 13. The top and bottom of the protective cover 5 are equipped with connecting plates 18, and the front and rear ends of the connecting plates 18 are equipped with shape memory metal strips 19. The shape memory metal strips 19 are deformed into an inverted "L" shape when heated, and are horizontal when reset at room temperature. The shape memory metal strips 19 are evenly distributed on the sides of the connecting plates 18, and the sides of adjacent shape memory metal strips 19 are in contact with each other.

[0035] In this example, such as Figure 7 As shown, this will cause the temperature inside the protective cover 5 to rise synchronously, so the shape memory metal strips 19 at the top and bottom of the protective cover 5 will change shape due to the heat, such as... Figure 8As shown, the shape memory metal strip 19 is bent after deformation, which allows the top and bottom of the protective cover 5 to be ventilated, assisting in heat dissipation of the docking cavity 4 and the interior of the protective cover 5, reducing heat accumulation, and thus better protecting the charging gun 3 and the charging pile body 1. When the temperature inside the docking cavity 4 rises and the temperature inside the protective cover 5 is high, the separation mechanism works, causing the conductive sheet 23 on the inner side of the limiting block 6 and the limiting groove 7 to come into contact. The coil 14 generates current due to the contact of the two sets of conductive sheets 23, thereby generating a magnetic field between the coils 14, guiding the rotor core 15 to cut the magnetic field lines and rotate. When the rotor core 15 rotates, it will synchronously drive the fan 17 to rotate, using the rotation of the fan 17 to blow air from bottom to top, so that the remaining heat inside the protective cover 5 can be discharged from the top of the protective cover 5 more quickly and achieve heat dissipation.

[0036] Example 3: Figure 1 , Figure 2 , Figure 4 , Figure 7 and Figure 9 The technical solution shown addresses the problem of insufficient protection for the charging gun 3 when it is not in use: the charging device for the new energy vehicle discloses a shielding mechanism. The protective cover 5 has a shielding mechanism on its side for shielding and restricting the position of the charging gun 3, including a mounting box 20. The mounting box 20 is fixedly connected to the front and rear ends of the protective cover 5. A connecting spring 21 is installed inside the mounting box 20, and a shielding plate 22 is installed on the side of the connecting spring 21. The inner side of the shielding plate 22 has an arc shape.

[0037] In this example, such as Figure 9 As shown, the mounting box 20 has a baffle 22 connected by a connecting spring 21 inside. The baffle 22 can shield the sides of the protective cover 5 to prevent the charging gun 3 from being damaged by impact when not in use, thus providing better protection for the charging gun 3. At the same time, the inner side of the baffle 22 is arc-shaped, which can keep it in close contact with the sides of the charging gun 3, thereby enabling the baffle 22 to better shield the charging gun 3.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A charging device for a new energy vehicle, comprising a charging pile body (1), wherein heat dissipation grooves (2) are provided on the upper ends of both the left and right sides of the charging pile body (1), and docking cavities (4) are provided on both the left and right sides of the charging pile body (1), wherein a charging gun (3) is engaged and connected inside the docking cavity (4), and a protective cover (5) is installed on the side of the docking cavity (4). Its features are: The charging pile body (1) has a fixing groove (12) on the side of the docking cavity (4) inside, and a separation mechanism for adjusting the position of the charging gun (3) is provided inside the fixing groove (12). The bottom of the protective cover (5) is provided with a heat dissipation mechanism for blowing air into the protective cover (5). The side of the protective cover (5) is provided with a shielding mechanism for shielding and restricting the position of the charging gun (3).

2. The charging device for a new energy vehicle according to claim 1, characterized in that: The separation mechanism includes a piston rod (10), which is fixedly connected to the inside of the fixing groove (12). The output end of the piston rod (10) is equipped with a mounting bracket (8), and the mounting bracket (8) is rotatably connected to a limiting block (6). The front and rear ends of the charging gun (3) are provided with limiting grooves (7) for placing the limiting block (6). The end side of the limiting groove (7) and the end side of the limiting block (6) are provided with matching conductive sheets (23).

3. The charging device for a new energy vehicle according to claim 2, characterized in that: The top and bottom ends of the limiting block (6) are both wound with torsion springs (9), and the limiting block (6) and the mounting bracket (8) form an elastic structure through the elastic force of the torsion springs (9).

4. A charging device for a new energy vehicle according to claim 3, characterized in that: The mounting bracket (8) and the fixing groove (12) are slidably connected, and the mounting bracket (8) is symmetrical about the vertical central axis of the charging pile body (1).

5. A charging device for a new energy vehicle according to claim 4, characterized in that: The output end of the piston rod (10) is wound with a return spring (11), and the piston rod (10) and the mounting bracket (8) form an elastic structure through the elastic force of the return spring (11).

6. A charging device for a new energy vehicle according to claim 5, characterized in that: The heat dissipation mechanism includes a stator core (13), which is fixedly connected to the bottom of the protective cover (5). The stator core (13) is wound with coils (14) on the left and right sides respectively. The magnetic poles of the two sets of coils (14) are opposite. The charging pile body (1) is equipped with a fixing frame (16) on both the left and right sides. The bottom of the fixing frame (16) is rotatably connected to a rotor core (15). The rotor core (15) is located in the middle position on one side between the coils (14). The top of the rotor core (15) passes through the fixing frame (16) and is equipped with a fan (17).

7. A charging device for a new energy vehicle according to claim 6, characterized in that: The fan (17) is located at the bottom of the protective cover (5) and is located on one side between the stator cores (13).

8. A charging device for a new energy vehicle according to claim 7, characterized in that: The top and bottom of the protective cover (5) are each equipped with a connecting plate (18), and the front and rear ends of the connecting plate (18) are each equipped with a memory metal strip (19).

9. A charging device for a new energy vehicle according to claim 8, characterized in that: The shape deformation state of the memory metal strip (19) under heating is an inverted "L" shape, and the reset state of the memory metal strip (19) under room temperature is a horizontal state. The memory metal strips (19) are evenly distributed on the side of the connecting plate (18), and the side of adjacent memory metal strips (19) are in contact with each other.

10. A charging device for a new energy vehicle according to claim 9, characterized in that: The shielding mechanism includes a mounting box (20), which is fixedly connected to the front and rear ends of the protective cover (5). A connecting spring (21) is installed inside the mounting box (20), and a shielding plate (22) is installed on the side of the connecting spring (21). The shielding plate (22) has an arc shape on its inner side.

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