CHARGING BASE AND VEHICLE

Abstract

The present invention provides a charging socket and a vehicle. The charging socket includes: a device fixed to the vehicle body, a power connector, and a detachable mechanism, wherein the power connector is connected to an electrical connection device and a cable, and the power connector is detachably attached to the device fixed to the vehicle body by the detachable mechanism. According to the present invention, the technical problem of the inconvenient removal and installation of a DC connector and an AC connector on a charging socket is alleviated.

Description

Charging station and car

[0001] Related applications

[0002] This application claims priority to the Chinese utility model patent with patent application number 202121795341.4, application date August 3, 2021, and invention name “Charging Stand and Car”. Technical Field

[0003] The present invention relates to the field of connection of electrical connection elements, in particular to a charging seat and a car. Background Art

[0004] In new energy vehicles, new energy batteries require a charging system to recharge. The charging station in this system includes a body-mounted device, cables, and an electrical connection device. The body-mounted device has a rear cover and is mounted on the vehicle. The electrical connection device connects to the cable, and a fixing clip secures the electrical connection device to the body-mounted device. The rear cover is fixed to the body-mounted device, and the cables run through the rear cover.

[0005] The DC connector and AC connector are important components of the charging station. Currently, the DC connector and AC connector are usually fixed using a multi-point fastening method, which cannot be quickly disassembled and installed, causing great difficulties in the vehicle assembly process and after-sales maintenance.

[0006] Summary of the Invention

[0007] The purpose of the present invention is to provide a charging stand and a car to alleviate the technical problem that the DC connector and the AC connector in the charging stand are inconvenient to disassemble and assemble.

[0008] The above-mentioned purpose of the present invention can be achieved by adopting the following technical solutions:

[0009] The present invention provides a charging stand, comprising: a device fixed to a vehicle body, a current connector and a detachable mechanism, wherein the current connector is connected to an electrical connection device and a cable; the current connector is detachably fixed to the device fixed to the vehicle body through the detachable mechanism.

[0010] The present invention provides a car comprising the charging base as described above.

[0011] The characteristics and advantages of the present invention are:

[0012] (1) The current connector and the device fixed to the vehicle body adopt a split structure, which is convenient for quick disassembly and maintenance;

[0013] (2) Each current connector can be made separately. When one of the current connectors is damaged, it can be replaced separately without replacing the entire charging station;

[0014] (3) The assembly process between the current connector and the device fixed to the vehicle body is relatively simple, and it is easy to realize automated production and mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following drawings are intended only to illustrate and explain the present invention, and are not intended to limit the scope of the present invention.

[0016] FIG1 is a schematic structural diagram of a charging base provided by the present invention;

[0017] FIG2 is an exploded view of the charging station shown in FIG1 ;

[0018] 3 and 4 are schematic structural diagrams of the AC connector in the charging base provided by the present invention;

[0019] 5 to 7 are schematic structural diagrams of the device for fixing the charging base to the vehicle body provided by the present invention;

[0020] FIG8 is a schematic structural diagram of another embodiment of the charging stand provided by the present invention. DETAILED DESCRIPTION

[0021] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described with reference to the accompanying drawings.

[0022] Example 1

[0023] The present invention provides a charging stand, as shown in Figures 1 to 3, which includes: a device 10 fixed to the vehicle body, a current connector 30 and a detachable mechanism 40, the current connector 30 is connected to an electrical connection device 22 and a cable 21; the current connector 30 is detachably fixed to the device 10 fixed to the vehicle body through the detachable mechanism 40.

[0024] Electrical connector 22 is the component that frequently connects and disconnects the charging device and is the primary component that conducts the charging current. Over long-term use, frequent plugging and unplugging can cause deformation and plating damage to electrical connector 22. Even sparks and melting due to excessive current can cause electrical connector 22 to fail to function. Furthermore, exposure to the external environment can corrode electrical connector 22 from water or salt, potentially causing its electrical performance to fall short of expectations. Therefore, electrical connector 22 is the most vulnerable component to damage within the charging station. However, in most current charging stations, electrical connector 22 is fixedly mounted on the charging station body and welded to cable 21. Damage to electrical connector 22 requires removal and replacement of the entire charging station, including the fixed portion and cable 21. In severe cases, the entire charging station may even need to be replaced. This cumbersome maintenance process, long labor hours, and high costs are currently one of the major issues hindering the development of rechargeable vehicles.

[0025] The charging stand proposed in this embodiment has the following advantages: (1) The current connector 30 and the device 10 fixed to the vehicle body adopt a split structure, which is convenient for quick disassembly and assembly and quick maintenance; (2) Each current connector 30 can be manufactured separately. When one of the multiple current connectors 30 is damaged, it can be replaced separately without replacing the entire charging stand; (3) The assembly process between the current connector 30 and the device 10 fixed to the vehicle body is relatively simple, and it is easy to realize automated production and mass production.

[0026] In one embodiment, the current connector 30 is provided with a mounting portion 321, and the vehicle body-fixed device 10 is provided with a mounting hole 11. As shown in Figures 2-6, the mounting portion 321 is inserted into the mounting hole 11 and detachably connected to achieve positioning and matching between the current connector 30 and the vehicle body-fixed device 10, facilitating assembly and disassembly of the two. If the current connector 30 and the vehicle body-fixed device 10 are assembled without a corresponding positioning mechanism, it would take the assembly operator a long time to assemble the current connector 30 and the vehicle body-fixed device 10 into the installation position. Furthermore, when the current connector 30 is secured to the vehicle body-fixed device 10 using the detachable mechanism 40, relative position shifting may occur, resulting in assembly failure.

[0027] Furthermore, as shown in Figure 3, mounting portion 321 includes a curved wall 323 and a planar wall 322. These curved wall 323 and planar wall 322 respectively mate with the inner wall of mounting hole 11. Mounting portion 321 is inserted into mounting hole 11, mating with mounting hole 11 via planar wall 322 and curved wall 323. This improves the mating precision between current connector 30 and vehicle body-fixed device 10, facilitating a more stable connection between current connector 30 and vehicle body-fixed device 10. Furthermore, curved wall 323 serves to distinguish the installation direction of mounting portion 321, acting as a preventative measure to prevent reverse insertion of mounting portion 321 into mounting hole 11.

[0028] As shown in Figure 1 , a current connector 30 is disposed at the rear end of the device 10 secured to the vehicle body, and an electrical connector 22 is disposed at the front end of the device 10 secured to the vehicle body. The electrical connector 22 is connected to the current connector 30. The electrical connector 22 may be a terminal. The current connector 30 may be a DC connector 31 or an AC connector 32; the charging station may include both the DC connector 31 and / or the AC connector 32.

[0029] In one embodiment, the detachable mechanism 40 includes a spring and a hook provided on the vehicle body-fixed device 10, and a groove provided on the current connector 30. Pressing the current connector 30 connects or disconnects the groove from the hook, and the spring releases the current connector 30 from the vehicle body-fixed device 10. This structure allows tool-free assembly and disassembly of the current connector 30 and the vehicle body-fixed device 10, reducing maintenance steps, saving disassembly time, and improving maintenance efficiency.

[0030] In one embodiment, as shown in Figures 7 and 8, the detachable mechanism 40 includes a card slot 52 provided on the device 10 fixed to the vehicle body, and a card piece 51 provided on the current connector 30. The card piece 51 is engaged with the card slot 52 to fix the current connector 30 to the device 10 fixed to the vehicle body. The operation is relatively convenient, and it is convenient to realize automated production and mass production. The card piece 51 and the card slot 52 can realize the pre-fixation of the current connector 30 and the device 10 fixed to the vehicle body, which is convenient for subsequent fastening operations.

[0031] Furthermore, the slot 52 is oriented sideways, and the engaging piece 51 moves along the rear end of the current connector 30 toward the front end until it engages with the slot 52. By pressing the current connector 30 to engage the device 10 fixed to the vehicle body, the engaging piece 51 engages with the slot 52, making operation more convenient and efficient.

[0032] Furthermore, the engaging piece 51 is provided on the side of the current connector 30 , and the position of the engaging slot 52 corresponds to the engaging piece 51 , so that the engaging piece 51 and the engaging slot 52 can be matched with each other conveniently.

[0033] In one embodiment, the detachable mechanism 40 includes a self-locking locking lever 61 provided on the vehicle body-fixed device 10 and a locking shaft 62 provided on the current connector 30. The self-locking locking lever 61 is hingedly connected to the current connector 30 and is configured to flip relative to the vehicle body-fixed device 10 to engage with the locking shaft 62, thereby securing the current connector 30 to the vehicle body-fixed device 10. As shown in Figures 3-4, the self-locking locking lever 61 is hingedly connected to the current connector 30 via a hinge shaft 613. The self-locking locking lever 61 is rotatable relative to the current connector 30 about the hinge shaft 613. When the self-locking locking lever 61 flips to engage with the locking shaft 62, the self-locking locking lever 61 stops rotating, simultaneously locking the current connector 30 to the vehicle body-fixed device 10.

[0034] As shown in Figures 3 and 4, the self-locking locking rod 61 is provided with a locking groove 611. After the locking shaft 62 is matched with the self-locking locking rod 61, the locking rod can slide relative to the self-locking locking rod 61 in the locking groove 611. When the self-locking locking rod 61 is flipped clockwise to the position shown in Figure 4, the self-locking locking rod 61 and the locking shaft 62 form a snap fit, achieving interlocking, and the locking shaft 62 is locked in the locking groove 611. As shown in Figure 4, one end of the locking groove 611 is closed, and the other end of the locking groove 611 is provided with a slot opening 612. The locking shaft 62 can enter the locking groove 611 through the slot opening 612. When the mounting portion 321 at the end of the current connector 30 is inserted into the mounting hole 11, the self-locking locking rod 61 is rotated clockwise, so that the locking rod can smoothly enter the locking groove 611 through the slot opening 612.

[0035] Furthermore, the locking groove 611 is curved. After the locking shaft 62 enters the locking groove 611, the locking shaft 62 slides relative to the locking groove 611 during rotation of the self-locking locking lever 61. In one embodiment, the distance between the locking groove 611 and the hinge axis 613 gradually decreases from one end of the groove opening 612 to the other end, so that as the self-locking locking lever 61 rotates clockwise, the sidewalls of the locking groove 611 gradually tighten the locking shaft 62. Preferably, the locking groove 611 is in the shape of a circular arc, which is eccentric with respect to the hinge axis 613; alternatively, the locking groove 611 is in the shape of a parabola.

[0036] Furthermore, the vehicle body-fixed device 10 has a threaded hole, and the current connector 30 has a through-hole. The detachable mechanism 40 includes a screw 71, which passes through the through-hole and is threadedly engaged with the threaded hole to secure the current connector 30 to the vehicle body-fixed device 10. The cable 21 and the current connector 30 are also detachably connected via the screw 71. Furthermore, the threaded hole is an internally embedded or pre-buried internally threaded post.

[0037] The internal threaded column is preferably made of metal. As the torque of the screw 71 screwed to the threaded hole increases, the contact resistance between the cable 21 and the current connector 30 gradually decreases. Preferably, the torque range of the screw 71 screwed to the threaded hole is 0.1N·m-30N·m.

[0038] To verify the effect of the torque range of screwing screw 71 into the threaded hole on the connection between the vehicle body-mounted device 10 and the current connector 30, the inventors used the same vehicle body-mounted device 10, current connector 30, and screw 71, tightened them together at different torques, and then tested the connection between the vehicle body-mounted device 10 and the current connector 30 after undergoing a vibration test. The test results are shown in Table 1.

[0039] The vibration test is to place the connected sample on the vibration test bench and go through 300 vibration cycles. Each cycle requires vibration in 6 directions, with a frequency of 100Hz and a single-direction acceleration of 40m / s. 2 Then observe whether the device 10 fixed to the vehicle body and the current connector 30 are loose. In this embodiment, if the device 10 fixed to the vehicle body and the current connector 30 are loose or damaged during installation, it is considered unqualified.

[0040] Table 1 Effect of different torques on connection conditions

[0041]

[0042] As can be seen from Table 1 above, when the torque value of the screw 71 screwed to the threaded hole is less than 0.1 N·m, the body-mounted device 10 and the current connector 30 loosen after the vibration test. When the torque value of the screw 71 screwed to the threaded hole is greater than 30 N·m, the excessive torque applied to the body-mounted device 10 and the current connector 30 is too great, causing the plastic body-mounted device 10 and the current connector 30 to be damaged by the excessive pressure, thus preventing the basic function of the charging station. Therefore, the inventors have determined the torque range for the screw 71 screwed to the threaded hole to be 0.1 N·m-30 N·m.

[0043] Furthermore, the number of screws 71 is 1-36. In the charging station, the current connector 30 is installed on the device 10 fixed to the vehicle body. A semi-clip structure can be used to pre-clip the current connector 30 and the device 10 fixed to the vehicle body. Then, a screw 71 is used to screw the movable end of the current connector 30 to the device 10 fixed to the vehicle body. This can reduce the number of screws 71 installed, facilitate installation and disassembly, and improve the efficiency of charging station assembly and maintenance. However, a disadvantage of a single screw 71 is that the connection between the current connector 30 and the device 10 fixed to the vehicle body is not firm. In certain environments with strong vibrations, the current connector 30 may be separated from the device 10 fixed to the vehicle body during use. Therefore, in some embodiments, up to 36 screws 71 can be used to fix the current connector 30 to the device 10 fixed to the vehicle body.

[0044] As shown in Figure 2, the current connector 30 is provided with an electrical connection device connection hole 311, and the electrical connection device 22 is accommodated in the electrical connection device connection hole 311. The current connector 30 is provided at the rear end of the device 10 fixed to the vehicle body, and the electrical connection device 22 is provided at the front end of the device 10 fixed to the vehicle body. By installing the electrical connection device 22 in the electrical connection device connection hole 311, the electrical connection device 22, the current connector 30, and the device 10 fixed to the vehicle body can be locked together.

[0045] There may be multiple electrical connection devices 22 , and each current connector 30 may be connected to multiple electrical connection devices 22 .

[0046] Preferably, the current connector 30 is a DC connector or an AC connector. DC connector charging is generally fast charging, where the AC / DC converter is integrated into an external charging station, allowing direct DC charging power to be obtained from the charging station. An AC connector integrates the AC / DC converter into the vehicle. AC connectors are generally slow charging, with a charging power of around 7kW. This is mainly because the power of the built-in AC / DC converter is generally not very high, also due to cost and space considerations.

[0047] Preferably, as shown in Figures 1 and 4, the charging stand includes an AC connector 32 and a DC connector 31, which are arranged at the rear end of the device 10 fixed to the vehicle body. The DC connector 31 is provided with an electrical connection device connection hole 311, and the AC connector 32 is provided with a boss 324, which is inserted into the electrical connection device connection hole 311 to block the electrical connection device connection hole 311 on the AC connector 32, thereby improving the dustproof performance. At the same time, the AC connector 32 and the DC connector 31 are positioned to improve the stability of the overall structure of the charging stand.

[0048] Furthermore, the charging base includes both an AC connector 32 and a DC connector 31 , which allows for convenient selection of a charging device without causing the charging base to lack a matching current connector 30 due to the single nature of the charging device, thereby preventing the charging operation from being impossible.

[0049] In one embodiment, the cable 21 is detachably connected to the electrical connection device 22. In other embodiments, the electrical connection device 22 is welded to the cable 21. If the electrical connection device 22 is damaged, the electrical connection device 22, the fixed portion, and the cable 21 must all be removed from the charging station and replaced. In severe cases, the entire charging station must be replaced, resulting in cumbersome maintenance, long maintenance hours, and high maintenance costs. The cable 21 is detachably connected to the electrical connection device 22. If the electrical connection device 22 is damaged, the electrical connection device 22 can be removed from the current connector 30 and cable 21 for replacement, eliminating the need to replace the current connector 30 and cable 21, thus saving maintenance costs and labor.

[0050] Preferably, the cable 21 is made of copper or copper alloy, aluminum or aluminum alloy. Due to the high voltage and large current of electric vehicle cables, large-diameter wires are required to conduct current. Copper conductor materials have good electrical conductivity and ductility, and are the preferred conductor materials for cables. However, with the rising price of copper, the material cost of using copper as a conductor will become increasingly high. For this reason, people have begun to look for substitutes for metallic copper to reduce costs. The content of metallic aluminum in the earth's crust is about 7.73%. After the refining technology is optimized, the price is relatively low. In addition, compared with copper, aluminum is lighter and its conductivity is second only to copper. Aluminum can replace part of copper in the field of electrical connections. Therefore, replacing copper with aluminum is a development trend in the field of automotive electrical connections.

[0051] The vehicle body fixing device 10 and the current connector 30 are made of plastic. This choice of plastic allows for injection molding, resulting in complex shapes and consistent product performance. Furthermore, the high insulation properties of plastic ensure the charging station maintains its insulation performance during use.

[0052] In one embodiment, a temperature sensor and a control board are provided on the current connector 30. The temperature sensor is electrically connected to the control board via a data cable. The temperature sensor transmits a temperature signal to the control board, thereby monitoring the temperature of the current connector 30 and preventing damage caused by excessive temperatures. Furthermore, the temperature sensor can directly communicate with the electrical connector 22 to obtain the temperature value of the electrical connector 22 in real time and transmit it to the control board. The control board adjusts the charging current to control the temperature value of the electrical connector 22. This ensures that the measurement accuracy of the temperature of the electrical connector 22 approaches or is equivalent to the theoretical absolute value, providing extremely high detection accuracy and rapid output capabilities.

[0053] Furthermore, the control board is a circuit board with a built-in control logic circuit. Through this control logic circuit, when the detected temperature of the temperature sensor is higher than the set temperature, the control board issues a warning message to achieve real-time monitoring of the temperature; when the detected temperature of the temperature sensor exceeds a certain value than the set temperature, the control board current connector 30 is automatically disconnected to avoid danger caused by excessive temperature.

[0054] Specifically, the temperature sensor can be an NTC (Negative Temperature Coefficient) temperature sensor or a PTC (Positive Temperature Coefficient) temperature sensor. NTC temperature sensors use negative temperature coefficient thermistors, which have a negative temperature coefficient and whose resistance decreases exponentially as temperature rises. PTC temperature sensors use positive temperature coefficient thermistors, which have a positive temperature coefficient and whose resistance increases sharply at a certain temperature, and can be used specifically as constant temperature sensors. The advantages of using these two temperature sensors include their small size and ability to measure gaps that other thermometers cannot. They are also easy to use, with resistance values ​​ranging from 0.1 to 100 kΩ. They are easily processed into complex shapes and can be mass-produced. They also offer excellent stability and a strong overload capacity, making them suitable for applications such as adapters that require small size and stable performance.

[0055] Example 2

[0056] The present invention also discloses a car comprising the charging seat as described above.

[0057] The above description is only an illustrative embodiment of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principle of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A charging base, wherein, the charging base includes: a device fixed to the vehicle body, a current connector, and a detachable mechanism, the current connector is connected to an electrical connection device and a cable; the current connector is detachably fixed to the device fixed to the vehicle body through the detachable mechanism.

2. The charging base according to claim 1, wherein, the current connector is provided with a mounting portion, the device fixed to the vehicle body is provided with a mounting hole, and the mounting portion is inserted into the mounting hole and detachably connected.

3. The charging base according to claim 2, wherein, the mounting portion includes an arc-shaped wall and a flat wall, and the arc-shaped wall and the flat wall are adapted to the inner wall of the mounting hole.

4. The charging base according to claim 1, wherein, the current connector is disposed at the rear end of the device fixed to the vehicle body, the electrical connection device is disposed at the front end of the device fixed to the vehicle body, and the electrical connection device is connected to the current connector.

5. The charging base according to claim 1, wherein, the detachable mechanism includes a spring and a hook disposed on the device fixed to the vehicle body, and a groove disposed on the current connector. Press the current connector to connect or disconnect the groove from the hook, and the spring disengages the current connector from the device fixed to the vehicle body.

6. The charging base according to claim 1, wherein, the detachable mechanism includes a card slot disposed on the device fixed to the vehicle body and a clamping piece disposed on the current connector, and the clamping piece is clamped in the card slot to fix the current connector to the device fixed to the vehicle body.

7. The charging base according to claim 6, wherein, the notch of the card slot faces sideways, and the clamping piece moves along the direction from the rear end to the front end of the device fixed to the vehicle body with the current connector and is clamped in the card slot.

8. The charging base according to claim 6, wherein, the clamping piece is disposed on the side of the current connector.

9. The charging base according to claim 1, wherein, the detachable mechanism includes a self-locking locking rod disposed on the device fixed to the vehicle body and a locking shaft disposed on the current connector. The self-locking locking rod is hinged to the current connector and is configured to flip relative to the device fixed to the vehicle body to be clamped with the locking shaft, so as to fix the current connector to the device fixed to the vehicle body.

10. The charging base according to claim 9, wherein, the self-locking locking rod is provided with a locking groove. After the locking shaft is paired with the self-locking locking rod, the locking rod can slide relative to the self-locking locking rod in the locking groove.

11. The charging base according to claim 10, wherein, one end of the locking groove is closed, the other end of the locking groove is provided with a groove opening, and the locking shaft can enter the locking groove through the groove opening.

12. The charging base according to claim 10, wherein, the locking groove is curved.

13. The charging base according to claim 1, wherein, The device fixed to the vehicle body is provided with a threaded hole, the current connector is provided with a through hole, and the detachable mechanism includes a screw. The screw passes through the through hole and is screwed into the threaded hole to fix the current connector to the device fixed to the vehicle body.

14. The charging seat according to claim 13, wherein, the threaded hole is an embedded or pre-embedded internal threaded post.

15. The charging seat according to claim 14, wherein, the internal threaded post is made of metal.

16. The charging seat according to claim 13, wherein, the torque range of the screw screwed into the threaded hole is 0.1 N·m - 30 N·m.

17. The charging seat according to claim 13, wherein, the number of the screws is 1 - 36.

18. The charging seat according to claim 1, wherein, the current connector is provided with an electrical connection device connection hole, and the electrical connection device is accommodated in the electrical connection device connection hole.

19. The charging seat according to claim 18, wherein, the number of the electrical connection devices is multiple.

20. The charging seat according to claim 19, wherein, the current connector is a DC connector or an AC connector.

21. The charging seat according to claim 20, wherein, the charging seat includes the AC connector and the DC connector. The DC connector is provided with an electrical connection device connection hole, and the AC connector is provided with a convex post. The convex post is inserted into the electrical connection device connection hole.

22. The charging seat according to claim 1, wherein, the cable is detachably connected to the electrical connection device.

23. The charging seat according to claim 1, wherein, the material of the cable is copper or copper alloy, aluminum or aluminum alloy.

24. The charging seat according to claim 1, wherein, the materials of the device fixed to the vehicle body and the current connector are plastic materials.

25. The charging seat according to claim 1, wherein, a temperature sensor and a control board are provided on the current connector. The temperature sensor is electrically connected to the control board through a data line.

26. The charging seat according to claim 25, wherein, the control board is a circuit board, and the circuit board is built with a control logic circuit.

27. The charging seat according to claim 26, wherein, the temperature sensor is an NTC temperature sensor or a PTC temperature sensor.

28. A vehicle, wherein, the vehicle includes the charging seat according to any one of claims 1 - 27.

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