Detachable and replaceable power plug with type capable of being automatically identified and automobile charging device thereof

Abstract

The utility model discloses a detachable and replaceable power plug with a type capable of being automatically identified and an automobile charging device thereof, which comprise a plug head and a plug cavity communicated with a first adapter, a device cavity communicated with a connecting device and a second adapter, and a sensing and control unit, a power line jack is arranged on one side of the first adapter, and a power line is arranged on the other side of the first adapter. One side of the second adapter is provided with a power line pin, one side of the power line pin is inserted into the power line jack to realize electrical connection between the plug head and a connecting device, the sensing unit is arranged in the plug cavity and used for providing electrical parameters formed in the connecting process of the plug, and the control unit is arranged in the device cavity and used for providing electrical parameters formed in the connecting process of the plug. The control unit is connected with the sensing unit through signal transmission so as to detect electric parameters of the sensing unit and compare a measured value of the sensing unit with a plug type set value. According to the utility model, the range of rated current identification is expanded, and the device can be used for identifying power plug types in different regions and countries.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle charging technology, and in particular to a replaceable power plug and its type automatically identifiable vehicle charging device. Background Technology

[0002] Power plugs come in different types depending on voltage, current, frequency, physical shape, geographical region, and country. Different plug types impose different requirements on the equipment's operating mode, safety protection, and compliance with standards and specifications. In the field of electric vehicle charging equipment, according to GB / T 18487-1, Mode 2 charging equipment uses single-phase AC power supply, and the connection to the power grid should use a standard 16A or 10A plug and socket conforming to GB / T 2099.1 and GB / T 1002, with a corresponding charging current not exceeding 13A or 8A. Charging equipment needs to comply with different charging current standards depending on the type of power plug connected. By changing to different types of power plugs, plug-connected equipment such as charging piles can adapt to different working environments, meet different market demands, and reduce equipment costs. Automatic detection of the power plug type for charging equipment provides an adaptive function for plug-connected equipment, automatically switching between operating modes and safety protection modes to meet different working environments and safety protection requirements.

[0003] Document CN106274521A discloses a charging device and control method that can automatically identify the specifications of a single-phase AC standard plug. It provides a method for identifying power plugs with rated current of 10A and 16A by identifying the type of adapter. This method is only applicable to identifying 10A and 16A plugs.

[0004] Document CN208789517U discloses a portable charging device for automatically identifying power plug patterns in electric vehicles. It provides a method for identifying 10A and 16A power plugs by using different connection methods on the adapter signal line; this method is only applicable to identifying 10A and 16A power plugs. Summary of the Invention

[0005] This application provides a replaceable power plug whose type can be automatically identified. Through the built-in sensing unit and control unit, it can realize intelligent automatic identification of the plug type. The sensing unit provides electrical parameters formed by the plug during the connection process, and the control unit compares these measured values ​​with preset plug type settings to accurately identify the type of the currently connected plug. At the same time, it expands the range of rated current identification and can be used to identify the power plug types of different regions and countries.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a replaceable power plug whose type can be automatically identified, including...

[0007] The plug head has a plug cavity on one side that is connected to the first adapter.

[0008] The connecting device has a cavity on one side that is connected to the second adapter. The first adapter has a power cord socket on the side near the second adapter, and the second adapter has a power cord pin on the side near the first adapter. The device cavity contains a load unit. One side of the power cord pin is electrically connected to the load unit, and the other side of the power cord pin is inserted into the power cord socket to achieve electrical connection between the plug head and the connecting device.

[0009] Sensing unit: used to provide electrical parameters generated during the connection process of the plug;

[0010] Control unit: Located inside the device cavity, the control unit is connected to the sensing unit via signal transmission to detect the electrical parameters of the sensing unit and compare the measured values ​​of the sensing unit with the plug type setting value.

[0011] Compared with the prior art, the advantages of this utility model are:

[0012] By designing a detachable first and second adapter (i.e., plug head and connecting device), users can easily replace plugs of different specifications or types to adapt to socket standards in different countries and regions, greatly improving the universality and flexibility of power plugs, eliminating the need to carry multiple power plugs of different specifications.

[0013] The built-in sensing and control units enable intelligent automatic identification of plug types. The sensing unit senses and collects electrical parameters (such as voltage and current) during plug connection, and the control unit compares these measured values ​​with preset plug type settings to accurately identify the type of plug currently connected. This feature ensures that the device can be safely and correctly matched with the power supply, avoiding damage or safety hazards caused by incorrect connection. At the same time, it expands the range of rated current identification and can be used to identify power plug types in different regions and countries.

[0014] Because it can automatically identify the plug type, this design can effectively prevent electrical faults or short circuits caused by plug and socket mismatch, thereby improving safety during use. At the same time, by monitoring electrical parameters in real time, it can also detect and deal with potential electrical problems in a timely manner, further ensuring the safety of users and equipment.

[0015] Users do not need to manually set or adjust the plug type; they can simply connect the plug head to the device for automatic recognition, which greatly simplifies the operation process and improves ease of use.

[0016] As an improvement, a sensing unit is located at the connection point between the plug head and the first adapter. The sensing unit is a resistor that determines the resistance value, a capacitor that determines the capacitance value, or an inductor that determines the inductance value. The first adapter has an output signal line jack on the side near the second adapter, and the sensing unit is connected to the output signal line jack for signal transmission. The second adapter has an output signal line pin on the side near the first adapter, and the other side of the output signal line pin is inserted into the output signal line jack to achieve electrical connection between the sensing unit and the control unit. The sensing unit uses components that determine the resistance, capacitance, or inductance values. These components have stable electrical characteristics and can serve as key parameters for identifying the plug type. By reading these parameters and comparing them with preset plug type settings, the control unit can quickly and accurately identify the currently connected plug type, thereby achieving an efficient automatic identification function.

[0017] As an improvement, the sensing unit is located at the connection between the first adapter and the second adapter. The first adapter has an adjustment protrusion on the side near the second adapter, and the second adapter has a groove corresponding to the adjustment protrusion on the side near the first adapter. The sensing unit is mounted on the adjustment protrusion or groove. The adjustment protrusion can be adjusted to insert into the groove to change the size of the measurement value of the sensing unit. By adjusting the insertion depth of the protrusion in the groove, the measurement range of the sensing unit can be adjusted in real time. This allows the sensing unit to be flexibly configured according to different application scenarios or measurement requirements, improving the accuracy and adaptability of the measurement.

[0018] As an improvement, the sensing unit includes a resistance strip, a first contact, a second contact, and a connecting wire connecting the first contact and the second contact. The resistance strip is located on the outer side of the groove sidewall. The connecting wire is connected to the resistance strip through the first contact and the second contact. The resistance value of the resistance strip can be adjusted by changing the distance between the first contact and the second contact. The two sides of the resistance strip are connected to the control unit for signal transmission. By adjusting the contact position between the first contact and the second contact on the protrusion and the resistance strip, the resistance value of the resistance strip can be flexibly adjusted. This design allows the sensing unit to quickly and accurately adjust its resistance value according to different application scenarios or needs, thereby meeting diverse measurement and control requirements.

[0019] As an improvement, the sensing unit includes a first capacitor plate and a second capacitor plate symmetrically arranged on the outer side of the groove sidewall. One end of the first capacitor plate and the second capacitor plate are connected to the control unit for signal transmission. The adjusting protrusion is provided with a dielectric. The control unit detects the capacitance value between the first capacitor plate and the second capacitor plate, and identifies the plug type by comparing the measured capacitance value between the first capacitor plate and the second capacitor plate with the capacitance value specified by the plug type.

[0020] As an improvement, the sensing unit includes an inductor coil surrounding the outer sidewall of the groove. The two ends of the inductor coil are connected to the control unit for signal transmission. The adjusting protrusion is provided with an electromagnetic material. The control unit identifies the plug type by detecting the inductance value at both ends of the inductor coil and by comparing the measured inductance value at both ends of the inductor coil with the inductance value specified by the plug type.

[0021] As an improvement, the sensing unit includes a Hall sensor disposed between the adjustment protrusion and the groove, a first magnetic element and a second magnetic element disposed on both sides of the Hall sensor. The first magnetic element is disposed inside the adjustment protrusion, and the second magnetic element is disposed on the outside of the groove corresponding to the first magnetic element. The first and second magnetic elements are placed opposite each other with the same polarity. One end of the Hall sensor is connected to the control unit for signal transmission. Different relative positions of the first magnetic element, the second magnetic element and the Hall sensor will result in different output values ​​of the Hall sensor. One end of the Hall sensor is connected to the control unit for signal transmission. The control unit detects the output value of the Hall sensor and identifies the plug type by comparing the measured output value of the Hall sensor with the plug type.

[0022] As an improvement, the sensing unit includes an array of pin transmitters disposed on the outer side wall of one side of the groove, and a photoelectric receiver array disposed on the outer side wall of the other side of the groove, corresponding to the pin transmitter array. One end of the pin transmitter array and the photoelectric receiver array is connected to the control unit for signal transmission. The control unit detects the photoelectric switch conduction combination value formed by the pin transmitter array and the photoelectric receiver array on the photoelectric receiver array by adjusting protrusions of different shapes blocking the photoelectric receiver array. The plug type is identified by comparing the measured conduction combination value of the photoelectric receiver array with the conduction combination value specified by the plug type.

[0023] As an improvement, the sensing unit includes a long protrusion disposed on the upper end of the adjustment protrusion near the groove, a short protrusion disposed on the lower end of the adjustment protrusion near the groove, and a micro switch array disposed on the bottom surface of the groove corresponding to the long and short protrusions. One side of the long and short protrusions abuts against one side of the micro switch array to form different switch array conduction combinations. The other side of the micro switch array is connected to the control unit for signal transmission. Different combinations of long and short protrusion arrays will press the micro switch array to form different switch array conduction combinations. The other side of the micro switch array is connected to the control unit for signal transmission. The control unit detects the micro switch array conduction combination value formed by the micro switch array pressed down by the protrusion array composed of long and short protrusions, and identifies the plug type by comparing the measured micro switch array conduction combination value with the micro switch array conduction combination value specified by the plug type.

[0024] The portable charging device uses a replaceable power plug with an automatically identifiable type, as described above. This portable charging device can identify not only Chinese 10A and 16A power plug types, but also power plug types from different regions and countries. It can identify both single-phase and multi-phase power plugs. Furthermore, this solution has a simple and reliable structure and is low in cost. Attached Figure Description

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0026] Figure 1 This is a schematic diagram of the structure of a detachable power plug with an automatically identifiable type, as shown in Embodiment 1.

[0027] Figure 2 This is a schematic diagram of the horizontally arranged structure of the power plug sensing unit that is detachable and whose type can be automatically identified, as shown in Embodiment 2.

[0028] Figure 3 This is a schematic diagram of the longitudinal arrangement of a power plug sensing unit that is detachable and whose type can be automatically identified, as shown in Embodiment 2.

[0029] Figure 4 This is a schematic diagram of the power plug structure of Embodiment 3, which is detachable and its type can be automatically identified;

[0030] Figure 5 This is a schematic diagram of the structure of a detachable power plug with an automatically identifiable type, as shown in Embodiment 4.

[0031] Figure 6 This is a schematic diagram of the structure of a replaceable power plug with an automatically identifiable type, as shown in Example 5.

[0032] Figure 7 This is a schematic diagram of the structure of a detachable power plug with an automatically identifiable type, as shown in Example 6.

[0033] Figure 8 This is a schematic diagram of the power plug structure of Embodiment 7, which is replaceable and its type can be automatically identified.

[0034] The markings in the above figures are as follows: 1. Plug head; 1.1. Plug cavity; 2. First adapter; 3. Connecting device; 3.1. Device cavity; 4. Second adapter; 5. Control unit; 6. Power cord socket; 7. Power cord pin; 8. Load unit; 9. Resistor; 10. Output signal line socket; 11. Output signal line pin; 12. Adjustment protrusion; 13. Groove; 14. Resistor strip; 15. First contact; 16. Second contact; 17. Connecting wire; 18. First capacitor junction; 19. Second capacitor junction; 20. Inductor coil; 21. Hall sensor; 22. First magnetic element; 23. Second magnetic element; 24. Pin-emitting tube array; 25. Photodetector array; 26. Long protrusion; 27. Short protrusion; 28. Microswitch array. Detailed Implementation

[0035] In this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "planar direction", "circumferential", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0036] Example 1

[0037] like Figure 1As shown, a replaceable power plug with automatically recognizable type includes a plug head 1, a connecting device 3, a sensing unit, and a control unit 5. One side of the plug head 1 is connected to a first adapter 2 and has a plug cavity 1.1. One side of the connecting device 3 is connected to a second adapter 4 and has a device cavity 3.1. A power cord socket 6 is located on the side of the first adapter 2 near the second adapter 4, and a power cord pin 7 is located on the side of the second adapter 4 near the first adapter 2. A load unit 8 is located inside the device cavity 3.1. One side of the power cord pin 7 is electrically connected to the load unit 8, and the other side of the power cord pin 7 is inserted into the power cord socket 6 to connect the plug head 1 to the connecting device 3. Electrical connection: The sensing unit is used to provide electrical parameters generated by the plug during the connection process. The control unit 5 is located inside the device cavity 3.1. The control unit 5 is connected to the sensing unit through signal transmission to detect the electrical parameters of the sensing unit and compare the measured value of the sensing unit with the plug type setting value. Preferably, there can be one or more sets of sensing units. The detection of the sensing unit can be a continuous quantity or a switching quantity. It can be a single sensing unit or a combination of multiple sensing units. Preferably, the plug head 1 and the first adapter 2 are connected by a connecting wire. Alternatively, there can be no connecting wire. The plug head 1 and the first adapter 2 are directly combined to form the whole first conversion head part.

[0038] The sensing unit is located at the connection between the plug head 1 and the first adapter 2. The sensing unit is a resistor 9 that determines the resistance value, a capacitor that determines the capacitance value, or an inductor that determines the inductance value. The first adapter 2 is provided with an output signal line jack 10 on the side near the second adapter 4. The sensing unit is connected to the output signal line jack 10 for signal transmission. The second adapter 4 is provided with an output signal line pin 11 on the side near the first adapter 2. The other side of the output signal line pin 11 is inserted into the output signal line jack 10 to realize the electrical connection between the sensing unit and the control unit 5.

[0039] When the sensing unit is resistor 9 with a defined resistance value, the control unit 5 detects the resistance value of the sensing unit and identifies the plug type by comparing the resistance value measured by the sensing unit with the resistance value specified by the plug type. The sensing unit can be one set or multiple sets, which can be used to increase the number of plug types that can be identified or for reliability redundancy measurement.

[0040] When the sensing unit is an inductor with a defined inductance value, the control unit 5 detects the inductance value of the sensing unit and identifies the plug type by comparing the inductance value measured by the sensing unit with the inductance value specified by the plug type. The sensing unit can be a group or multiple groups, which can be used to increase the number of plug types that can be identified or for reliability redundancy measurement.

[0041] When the sensing unit is a capacitor with a defined capacitance value, the control unit 5 detects the capacitance value of the sensing unit and identifies the plug type by comparing the capacitance value measured by the sensing unit with the capacitance value specified by the plug type. The sensing unit can be a group or multiple groups, which can be used to increase the number of plug types that can be identified or for reliability redundancy measurement.

[0042] Example 2

[0043] like Figures 2 to 3 As shown, a replaceable power plug with automatically recognizable type includes a plug head 1, a connecting device 3, a sensing unit, and a control unit 5. One side of the plug head 1 is connected to a first adapter 2 and has a plug cavity 1.1. One side of the connecting device 3 is connected to a second adapter 4 and has a device cavity 3.1. A power cord socket 6 is located on the side of the first adapter 2 near the second adapter 4, and a power cord pin 7 is located on the side of the second adapter 4 near the first adapter 2. A load unit 8 is located inside the device cavity 3.1. One side of the power cord pin 7 is electrically connected to the load unit 8, and the other side of the power cord pin 7 is inserted into the power cord socket 6 to connect the plug head 1 to the connecting device 3. Electrical connection: The sensing unit is used to provide electrical parameters generated by the plug during the connection process. The control unit 5 is located inside the device cavity 3.1. The control unit 5 is connected to the sensing unit through signal transmission to detect the electrical parameters of the sensing unit and compare the measured value of the sensing unit with the plug type setting value. Preferably, there can be one or more sets of sensing units. The detection of the sensing unit can be a continuous quantity or a switching quantity. It can be a single sensing unit or a combination of multiple sensing units. Preferably, the plug head 1 and the first adapter 2 are connected by a connecting wire. Alternatively, there can be no connecting wire. The plug head 1 and the first adapter 2 are directly combined to form the whole first conversion head part.

[0044] The sensing unit is located at the connection between the first adapter 2 and the second adapter 4. The first adapter 2 is provided with an adjustment protrusion 12 on the side near the second adapter 4, and the second adapter 4 is provided with a groove 13 on the side near the first adapter 2 corresponding to the adjustment protrusion 12. The sensing unit is located on the adjustment protrusion 12 or the groove 13. The adjustment protrusion 12 can be adjusted to insert into the groove 13 to change the size of the measurement value of the sensing unit.

[0045] The sensing unit includes a resistor strip 14, a first contact 15, a second contact 16, and a connecting wire 17 connecting the first contact 15 and the second contact 16. The resistor strip 14 is disposed on the outer side of the side wall of the groove 13. The connecting wire 17 is connected to the resistor strip 14 through the first contact 15 and the second contact 16. The resistance value of the resistor strip 14 can be adjusted by changing the distance between the first contact 15 and the second contact 16. The two sides of the resistor strip 14 are connected to the control unit 5 for signal transmission.

[0046] The first contact 15, the second contact 16, and the resistor strip 14 are in contact. When the spacing between the first contact 15 and the second contact 16 is changed, sensing units with different resistance values ​​are formed at both ends of the resistor strip 14. The signal is transmitted to the control unit 5. The control unit 5 detects the resistance value of the resistor strip 14 and identifies the plug type by comparing the measured resistance value of the resistor strip 14 with the resistance value specified by the plug type. In this embodiment, the sensing unit formed by the contact of the first contact 15, the second contact 16, and the resistor strip 14 can not only... Figure 2 The vertical setting shown can also be configured as follows: Figure 3 The shown is positioned in other locations that can constitute the same sensing unit function.

[0047] Example 3

[0048] like Figure 4 As shown, a replaceable power plug with automatically recognizable type includes a plug head 1, a connecting device 3, a sensing unit, and a control unit 5. One side of the plug head 1 is connected to a first adapter 2 and has a plug cavity 1.1. One side of the connecting device 3 is connected to a second adapter 4 and has a device cavity 3.1. A power cord socket 6 is located on the side of the first adapter 2 near the second adapter 4, and a power cord pin 7 is located on the side of the second adapter 4 near the first adapter 2. A load unit 8 is located inside the device cavity 3.1. One side of the power cord pin 7 is electrically connected to the load unit 8, and the other side of the power cord pin 7 is inserted into the power cord socket 6 to connect the plug head 1 to the connecting device 3. Electrical connection: The sensing unit is used to provide electrical parameters generated by the plug during the connection process. The control unit 5 is located inside the device cavity 3.1. The control unit 5 is connected to the sensing unit through signal transmission to detect the electrical parameters of the sensing unit and compare the measured value of the sensing unit with the plug type setting value. Preferably, there can be one or more sets of sensing units. The detection of the sensing unit can be a continuous quantity or a switching quantity. It can be a single sensing unit or a combination of multiple sensing units. Preferably, the plug head 1 and the first adapter 2 are connected by a connecting wire. Alternatively, there can be no connecting wire. The plug head 1 and the first adapter 2 are directly combined to form the whole first conversion head part.

[0049] The sensing unit is located at the connection between the first adapter 2 and the second adapter 4. The first adapter 2 is provided with an adjustment protrusion 12 on the side near the second adapter 4, and the second adapter 4 is provided with a groove 13 on the side near the first adapter 2 corresponding to the adjustment protrusion 12. The sensing unit is located on the adjustment protrusion 12 or the groove 13. The adjustment protrusion 12 can be adjusted to insert into the groove 13 to change the size of the measurement value of the sensing unit.

[0050] The sensor includes a first capacitor plate 18 and a second capacitor plate 19 symmetrically arranged on the outer side of the sidewall of the groove 13. One end of the first capacitor plate 18 and the second capacitor plate 19 is connected to the control unit 5 for signal transmission. The adjusting protrusion 12 is provided with a dielectric.

[0051] The relative positions of the first capacitor plate 18 and the second capacitor plate 19, along with the adjusting protrusions 12 containing different dielectrics, form sensing units with different capacitance values. Signals are transmitted to the control unit 5. The control unit 5 detects the capacitance value between the first capacitor plate 18 and the second capacitor plate 19, and identifies the plug type by comparing the measured capacitance value between the first capacitor plate 18 and the second capacitor plate 19 with the capacitance value specified by the plug type. In this solution, the sensing unit composed of the first capacitor plate 18, the second capacitor plate 19, and the adjusting protrusions 12 containing different dielectrics can not only... Figure 4 The vertical arrangement shown can also be placed in other positions that can constitute the same sensing unit function.

[0052] Example 4

[0053] like Figure 5 As shown, a replaceable power plug with automatically recognizable type includes a plug head 1, a connecting device 3, a sensing unit, and a control unit 5. One side of the plug head 1 is connected to a first adapter 2 and has a plug cavity 1.1. One side of the connecting device 3 is connected to a second adapter 4 and has a device cavity 3.1. A power cord socket 6 is located on the side of the first adapter 2 near the second adapter 4, and a power cord pin 7 is located on the side of the second adapter 4 near the first adapter 2. A load unit 8 is located inside the device cavity 3.1. One side of the power cord pin 7 is electrically connected to the load unit 8, and the other side of the power cord pin 7 is inserted into the power cord socket 6 to connect the plug head 1 to the connecting device 3. Electrical connection: The sensing unit is used to provide electrical parameters generated by the plug during the connection process. The control unit 5 is located inside the device cavity 3.1. The control unit 5 is connected to the sensing unit through signal transmission to detect the electrical parameters of the sensing unit and compare the measured value of the sensing unit with the plug type setting value. Preferably, there can be one or more sets of sensing units. The detection of the sensing unit can be a continuous quantity or a switching quantity. It can be a single sensing unit or a combination of multiple sensing units. Preferably, the plug head 1 and the first adapter 2 are connected by a connecting wire. Alternatively, there can be no connecting wire. The plug head 1 and the first adapter 2 are directly combined to form the whole first conversion head part.

[0054] The sensing unit is located at the connection between the first adapter 2 and the second adapter 4. The first adapter 2 is provided with an adjustment protrusion 12 on the side near the second adapter 4, and the second adapter 4 is provided with a groove 13 on the side near the first adapter 2 corresponding to the adjustment protrusion 12. The sensing unit is located on the adjustment protrusion 12 or the groove 13. The adjustment protrusion 12 can be adjusted to insert into the groove 13 to change the size of the measurement value of the sensing unit.

[0055] The sensor includes an inductor coil 20 surrounding the outer sidewall of the groove 13. The two ends of the inductor coil 20 are connected to the control unit 5 for signal transmission. The adjusting protrusion 12 is provided with an electromagnetic material.

[0056] The inductor coil 20 and the adjusting protrusions 12 containing different electromagnetic properties form sensing units with different inductance values. The two ends of the inductor coil 20 are connected to the control unit 5 for signal transmission. The control unit 5 detects the inductance value at both ends of the inductor coil 20 and identifies the plug type by comparing the measured inductance value with the inductance value specified by the plug type. In this scheme, the sensing unit composed of the inductor coil 20 and the adjusting protrusions 12 containing different electromagnetic properties can not only... Figure 5 The vertical arrangement shown can also be placed in other positions that can constitute the same sensing unit function.

[0057] Example 5

[0058] like Figure 6 As shown, a replaceable power plug with automatically recognizable type includes a plug head 1, a connecting device 3, a sensing unit, and a control unit 5. One side of the plug head 1 is connected to a first adapter 2 and has a plug cavity 1.1. One side of the connecting device 3 is connected to a second adapter 4 and has a device cavity 3.1. A power cord socket 6 is located on the side of the first adapter 2 near the second adapter 4, and a power cord pin 7 is located on the side of the second adapter 4 near the first adapter 2. A load unit 8 is located inside the device cavity 3.1. One side of the power cord pin 7 is electrically connected to the load unit 8, and the other side of the power cord pin 7 is inserted into the power cord socket 6 to connect the plug head 1 to the connecting device 3. Electrical connection: The sensing unit is used to provide electrical parameters generated by the plug during the connection process. The control unit 5 is located inside the device cavity 3.1. The control unit 5 is connected to the sensing unit through signal transmission to detect the electrical parameters of the sensing unit and compare the measured value of the sensing unit with the plug type setting value. Preferably, there can be one or more sets of sensing units. The detection of the sensing unit can be a continuous quantity or a switching quantity. It can be a single sensing unit or a combination of multiple sensing units. Preferably, the plug head 1 and the first adapter 2 are connected by a connecting wire. Alternatively, there can be no connecting wire. The plug head 1 and the first adapter 2 are directly combined to form the whole first conversion head part.

[0059] The sensing unit is located at the connection between the first adapter 2 and the second adapter 4. The first adapter 2 is provided with an adjustment protrusion 12 on the side near the second adapter 4, and the second adapter 4 is provided with a groove 13 on the side near the first adapter 2 corresponding to the adjustment protrusion 12. The sensing unit is located on the adjustment protrusion 12 or the groove 13. The adjustment protrusion 12 can be adjusted to insert into the groove 13 to change the size of the measurement value of the sensing unit.

[0060] The sensor includes a Hall sensor 21 disposed between the adjustment protrusion 12 and the groove 13, a first magnetic element 22 and a second magnetic element 23 disposed on both sides of the Hall sensor 21. The first magnetic element 22 is disposed inside the adjustment protrusion 12, and the second magnetic element 23 is disposed on the outside of the groove 13 corresponding to the first magnetic element 22. The first magnetic element 22 and the second magnetic element 23 are placed opposite each other with the same polarity. One end of the Hall sensor 21 is connected to the control unit 5 for signal transmission.

[0061] The first magnetic element 22 and the second magnetic element 23 are placed opposite each other with the same polarity. The first magnetic element 22, the second magnetic element 23, and the Hall sensor 21 located between them constitute a Hall displacement sensor sensing unit. Different relative positions of the first magnetic element 22, the second magnetic element 23, and the Hall sensor 21 will form different Hall sensors, thus outputting different output values. One end of the Hall sensor 21 is connected to the control unit 5 for signal transmission. The control unit 5 detects the output value of the Hall sensor 21 and identifies the plug type by comparing the measured output value of the Hall sensor 21 with the plug type. In this scheme, the first magnetic element 22, the second magnetic element 23, and the Hall sensor 21 located between them constitute a Hall displacement sensor sensing unit, which can not only... Figure 6 The vertical arrangement shown can also be placed in other positions that can constitute the same sensing unit function.

[0062] Example 6

[0063] like Figure 7As shown, a replaceable power plug with automatically recognizable type includes a plug head 1, a connecting device 3, a sensing unit, and a control unit 5. One side of the plug head 1 is connected to a first adapter 2 and has a plug cavity 1.1. One side of the connecting device 3 is connected to a second adapter 4 and has a device cavity 3.1. A power cord socket 6 is located on the side of the first adapter 2 near the second adapter 4, and a power cord pin 7 is located on the side of the second adapter 4 near the first adapter 2. A load unit 8 is located inside the device cavity 3.1. One side of the power cord pin 7 is electrically connected to the load unit 8, and the other side of the power cord pin 7 is inserted into the power cord socket 6 to connect the plug head 1 to the connecting device 3. Electrical connection: The sensing unit is used to provide electrical parameters generated by the plug during the connection process. The control unit 5 is located inside the device cavity 3.1. The control unit 5 is connected to the sensing unit through signal transmission to detect the electrical parameters of the sensing unit and compare the measured value of the sensing unit with the plug type setting value. Preferably, there can be one or more sets of sensing units. The detection of the sensing unit can be a continuous quantity or a switching quantity. It can be a single sensing unit or a combination of multiple sensing units. Preferably, the plug head 1 and the first adapter 2 are connected by a connecting wire. Alternatively, there can be no connecting wire. The plug head 1 and the first adapter 2 are directly combined to form the whole first conversion head part.

[0064] The sensing unit is located at the connection between the first adapter 2 and the second adapter 4. The first adapter 2 is provided with an adjustment protrusion 12 on the side near the second adapter 4, and the second adapter 4 is provided with a groove 13 on the side near the first adapter 2 corresponding to the adjustment protrusion 12. The sensing unit is located on the adjustment protrusion 12 or the groove 13. The adjustment protrusion 12 can be adjusted to insert into the groove 13 to change the size of the measurement value of the sensing unit.

[0065] The sensor includes a plurality of pin-emitting tube arrays 24 disposed on the outer side wall of one side of the groove 13, and a photoelectric receiving tube array 25 disposed on the outer side wall of the other side of the groove 13 corresponding to the pin-emitting tube array 24. One end of the pin-emitting tube array 24 and the photoelectric receiving tube array 25 are connected to the control unit 5 for signal transmission.

[0066] The pin-emitting diode array 24, the photoelectric receiving diode array 25, and the adjusting protrusion 12 constitute a photoelectric development sensing unit. One end of the pin-emitting diode array 24 and the photoelectric receiving diode array 25 is connected to the control unit 5 for signal transmission. The control unit 5 detects the photoelectric switch conduction combination value formed by the pin-emitting diode array 24 and the photoelectric receiving diode array 25 on the photoelectric receiving diode array 25 due to the obstruction of the adjusting protrusion 12 of different shapes. By comparing the measured conduction combination value of the photoelectric receiving diode array 25 with the conduction combination value specified by the plug type, the plug type is identified. In this scheme, the photoelectric development sensing unit composed of the pin-emitting diode array 24, the photoelectric receiving diode array 25, and the adjusting protrusion 12 can not only... Figure 7 The vertical arrangement shown can also be placed in other positions that can constitute the same sensing unit function.

[0067] Example 7

[0068] like Figure 8 As shown, a replaceable power plug with automatically recognizable type includes a plug head 1, a connecting device 3, a sensing unit, and a control unit 5. One side of the plug head 1 is connected to a first adapter 2 and has a plug cavity 1.1. One side of the connecting device 3 is connected to a second adapter 4 and has a device cavity 3.1. A power cord socket 6 is located on the side of the first adapter 2 near the second adapter 4, and a power cord pin 7 is located on the side of the second adapter 4 near the first adapter 2. A load unit 8 is located inside the device cavity 3.1. One side of the power cord pin 7 is electrically connected to the load unit 8, and the other side of the power cord pin 7 is inserted into the power cord socket 6 to connect the plug head 1 to the connecting device 3. Electrical connection: The sensing unit is used to provide electrical parameters generated by the plug during the connection process. The control unit 5 is located inside the device cavity 3.1. The control unit 5 is connected to the sensing unit through signal transmission to detect the electrical parameters of the sensing unit and compare the measured value of the sensing unit with the plug type setting value. Preferably, there can be one or more sets of sensing units. The detection of the sensing unit can be a continuous quantity or a switching quantity. It can be a single sensing unit or a combination of multiple sensing units. Preferably, the plug head 1 and the first adapter 2 are connected by a connecting wire. Alternatively, there can be no connecting wire. The plug head 1 and the first adapter 2 are directly combined to form the whole first conversion head part.

[0069] The sensing unit is located at the connection between the first adapter 2 and the second adapter 4. The first adapter 2 is provided with an adjustment protrusion 12 on the side near the second adapter 4, and the second adapter 4 is provided with a groove 13 on the side near the first adapter 2 corresponding to the adjustment protrusion 12. The sensing unit is located on the adjustment protrusion 12 or the groove 13. The adjustment protrusion 12 can be adjusted to insert into the groove 13 to change the size of the measurement value of the sensing unit.

[0070] The sensor includes a long protrusion 26 disposed on the upper end of the side of the adjustment protrusion 12 near the groove 13, a short protrusion 27 disposed on the lower end of the side of the adjustment protrusion 12 near the groove 13, and a micro switch array 28 disposed on the bottom surface of the groove 13 corresponding to the long protrusion 26 and the short protrusion 27. One side of the long protrusion 26 and the short protrusion 27 abuts against one side of the micro switch array 28 to form different switch array conduction combinations. The other side of the micro switch array 28 is connected to the control unit 5 for signal transmission.

[0071] The protrusion array composed of long protrusions 26 and short protrusions 27 and the microswitch array 28 constitute a microswitch array sensing unit. Different combinations of long protrusions 26 and short protrusions 27 will press the microswitch array 28 to form different switch array conduction combinations. The other side of the microswitch array 28 is connected to the control unit 5 for signal transmission. The control unit 5 detects the conduction combination value of the microswitch array 28 formed by the protrusion array composed of long protrusions 26 and short protrusions 27 pressing down on the microswitch array 28. By comparing the measured conduction combination value of the microswitch array 28 with the conduction combination value of the microswitch array 28 specified by the plug type, the plug type is identified. In this scheme, the microswitch array sensing unit composed of the protrusion array composed of long protrusions 26 and short protrusions 27 and the microswitch array 28 can not only be Figure 8 The vertical arrangement shown can also be placed in other positions that can constitute the same sensing unit function.

[0072] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the technical solution of the present invention, or the direct application of the concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A power plug which is detachable and replaceable and the type of which can be automatically identified, characterized in that: The utility model relates to a plug adapter, which comprises a plug head, a connecting device, a sensing unit and a control unit. The plug head is provided with a plug cavity on one side in communication with a first adapter; the connecting device is provided with a device cavity on one side in communication with a second adapter; the first adapter is provided with a power cord jack on one side close to the second adapter; the second adapter is provided with a power cord pin on one side close to the first adapter; the device cavity is provided with a load unit inside; one side of the power cord pin is electrically connected with the load unit; the other side of the power cord pin is inserted into the power cord jack to realize the electrical connection between the plug head and the connecting device. The sensing unit is used to provide the electrical parameters formed by the plug during the connection process. The control unit is arranged inside the device cavity; the control unit is connected with the sensing unit through signal transmission to detect the electrical parameters of the sensing unit and compare the measured value of the sensing unit with the plug type setting value. The sensing unit is arranged at the communication position of the plug head and the first adapter; the sensing unit is a resistor for determining the resistance value, a capacitor for determining the capacitance value or an inductor for determining the inductance value; the first adapter is provided with an output signal line jack on one side close to the second adapter; the sensing unit is connected with the output signal line jack through signal transmission; the second adapter is provided with an output signal line pin on one side close to the first adapter; the other side of the output signal line pin is inserted into the output signal line jack to realize the electrical connection between the sensing unit and the control unit.

2. The detachable and replaceable power plug with automatic type identification according to claim 1, characterized in that: The sensing unit is arranged at the connection position of the first adapter and the second adapter; the first adapter is provided with an adjusting protrusion on one side close to the second adapter; the second adapter is provided with a groove corresponding to the adjusting protrusion on one side close to the first adapter; the sensing unit is arranged on the adjusting protrusion or the groove; the adjusting protrusion can be inserted into the groove to change the size of the measured value of the sensing unit.

3. The detachable and type-automatically-identifiable power plug according to claim 1, characterized in that: The sensing unit comprises a resistance strip, a first contact, a second contact and a connecting wire connecting the first contact and the second contact; the resistance strip is arranged outside the side wall of the groove; the connecting wire is in contact connection with the first contact, the second contact and the resistance strip; the resistance value of the resistance strip can be adjusted by changing the distance between the first contact and the second contact; the two sides of the resistance strip are connected with the control unit through signal transmission.

4. The detachable and replaceable power plug with the type automatically identifiable according to claim 3, characterized in that: The sensing unit comprises a first capacitor junction plate and a second capacitor junction plate which are symmetrically arranged outside the side wall of the groove; one end of each of the first capacitor junction plate and the second capacitor junction plate is connected with the control unit through signal transmission; the adjusting protrusion is provided with a dielectric.

5. The detachable and type-automatically-identifiable power plug according to claim 3, characterized in that: The sensing unit comprises an inductor coil which is arranged outside the side wall of the groove; the two ends of the inductor coil are connected with the control unit through signal transmission; the adjusting protrusion is provided with an electromagnetic substance.

6. The detachable and type-automatically-identifiable power plug according to claim 3, characterized in that: The sensing unit comprises a Hall sensor arranged between the adjusting protrusion and the groove, a first magnetic element arranged on one side of the Hall sensor and a second magnetic element arranged on the other side of the Hall sensor; the first magnetic element is arranged inside the adjusting protrusion; the second magnetic element is arranged outside the groove corresponding to the first magnetic element; the first magnetic element and the second magnetic element are placed in opposite polarity; one end of the Hall sensor is connected with the control unit through signal transmission.

7. The detachable and replaceable power plug with automatic type identification as claimed in claim 3 wherein: ​ 8. The detachable and replaceable power plug with automatic type identification as claimed in claim 3 wherein: The sensing unit comprises a plurality of pin emitting tube arrays arranged outside the side wall of one side of the groove, a photoelectric receiving tube array arranged outside the side wall of the other side of the groove corresponding to the pin emitting tube arrays, and one end of the pin emitting tube arrays and the photoelectric receiving tube array is connected with the control unit through signal transmission.

9. The detachable and type-automatically-identifiable power plug according to claim 3, characterized in that: The sensing unit comprises a long protrusion arranged on the upper end of the adjusting protrusion close to one side of the groove, a short protrusion arranged on the lower end of the adjusting protrusion close to one side of the groove, and a micro switch array arranged on the bottom surface of the groove corresponding to the long protrusion and the short protrusion, one side of the long protrusion and the short protrusion abuts against one side of the micro switch array to form different switch array conduction combinations, and the other side of the micro switch array is connected with the control unit through signal transmission.

10. An automotive charging device, characterized by: The power plug is detachable and the type of the power plug can be automatically identified.

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