A charging device

Abstract

The present invention relates to a charging device, including an adapter, and a charging connection device for connecting an electric device; when the charging connection device is connected to a connection socket of a first power supply device, the charging connection device sends a first output signal to the electric device; when the charging connection device is connected to a second power supply device through the adapter, the charging connection device sends a second output signal to the electric device. Compared with the prior art, the charging device of the present invention can be matched with a first power supply device such as a dedicated power supply device to obtain high-power electricity and achieve fast charging; it can also be matched with a second power supply device such as an ordinary household power supply device, and can be connected to an ordinary household power supply device at home through an adapter to achieve convenient charging, and the type of the power supply device can be determined, and the type of the power supply device can be prompted to the electric device, which greatly facilitates user use and saves costs.

Description

Technical Field

[0001] The present invention relates to the field of electric vehicle charging, and in particular to a charging device. Background Art

[0002] Traditional power supply devices mainly include dedicated power supply devices and ordinary household power supply devices. Among them, dedicated power supply devices are usually power supplies with a voltage of 220V, a current of 32A, and a power supply of 7kW, while ordinary household power supply devices are usually power supplies with a voltage of 220V, a current of 16A, and a power supply of 3kW. Traditional power supply devices require different charging devices to power electrical devices. For example, in the field of electric vehicles, charging cables and vehicle plugs that are permanently connected to dedicated power supply devices are used. By plugging the vehicle plug into the electric vehicle, high-power charging is provided for the electric vehicle. Alternatively, a separate movable cable assembly with a vehicle plug and a power supply plug is used. By plugging the power supply plug into an ordinary household power supply device and the vehicle plug into the electric vehicle, low-power charging is provided for the electric vehicle.

[0003] While charging cables and vehicle plugs permanently connected to a dedicated power supply offer high charging power, reaching 7 kW or more, they can only be fixed to the dedicated power supply and cannot be moved around, significantly limiting their application. Separate, removable cable assemblies with vehicle and power plugs are more convenient and can be easily connected to ordinary household power supplies, but this method offers low charging power, under 3 kW, and requires 8-10 hours to fully charge an electric vehicle, a long charging time. Summary of the Invention

[0004] Based on this, the purpose of the present invention is to provide a charging device that can be connected to a first power supply device such as a dedicated power supply device, and can also be connected to a second power supply device such as an ordinary household power supply device, and can determine the type of the power supply device and prompt the power-consuming device of the type of the power supply device, thereby saving costs and resources and providing convenience for users.

[0005] A charging device includes an adapter and a charging connection device for connecting to an electrical device;

[0006] When the charging connection device is connected to the connection socket of the first power supply device, the charging connection device sends a first output signal to the power-consuming device;

[0007] When the charging connection device is connected to the second power supply device through the adapter, the charging connection device sends a second output signal to the electrical device; the adapter includes a power plug for connecting to the live wire, neutral wire and ground wire on the second power supply device, and a female adapter for connecting to the power plug; the female adapter is provided with a first detection port, and a first live wire connection port, a first neutral wire connection port and a first ground connection port for connecting to the power plug; the first detection port is connected to the first ground connection port through a conductor.

[0008] Compared with the existing technology, the charging device of the present invention can be connected to a first power supply device such as a dedicated power supply device to obtain high-power electricity and achieve fast charging; it can also be connected to a second power supply device such as an ordinary household power supply device. It can be connected to an ordinary household power supply device at home through an adapter to achieve convenient charging. It can also determine the type of power supply device and prompt the power-consuming device of the type of power supply device, which greatly facilitates user use and saves costs.

[0009] Furthermore, the charging connection device includes a charging cable, a connecting socket, a vehicle plug and a controller; one end of the charging cable is connected to the connecting socket, and the other end is fixed to the vehicle plug via the controller; the connecting socket is provided with a detector, a second live wire connection terminal, a second neutral wire connection terminal, a second ground connection terminal and a second detection terminal; the detector is connected to the second detection terminal; the controller is connected to the detector via the charging cable, and obtains the potential information of the second detection terminal, and determines the type of the power supply device based on the potential information, so as to send a first output signal or a second output signal to the electrical equipment.

[0010] Furthermore, the connection socket is provided with a third detection port, and a third live wire connection port, a third neutral wire connection port and a third ground connection port respectively connected to the live wire, neutral wire and ground wire of the first power supply device.

[0011] Furthermore, the detector includes a first resistor and a second resistor connected in series; a first connection end of the first resistor is connected to a detection power supply; a second connection end of the first resistor is connected to the first connection end of the second resistor; a second connection end of the second resistor is grounded; the second detection terminal is connected between the second connection end of the first resistor and the first connection end of the second resistor; the controller is connected between the second connection end of the first resistor and the first connection end of the second resistor via the charging cable, and is connected to the second detection terminal.

[0012] Furthermore, the controller is arranged in the vehicle plug, thereby making the appearance more neat and beautiful, and improving reliability, thereby preventing the problem of cable damage caused by adding cables when the controller is arranged on an external cable control protection device.

[0013] Furthermore, a cable control protection device is provided on the charging cable; the controller is provided in the cable control protection device, so that the volume of the controller is not limited by the volume of the charging connection device, thereby improving the charging power.

[0014] Furthermore, it also includes an AC / DC converter. The charging cable converts the transmitted AC power into DC power after passing through the controller and the AC / DC converter, and transmits it to power-consuming equipment such as electric vehicles, thereby being free from the power limit of the OBC and obtaining greater charging power.

[0015] Furthermore, a receiving groove is provided on both sides of the end of the connecting male base; a spring, a buckle and a buckle button are provided in the receiving groove in sequence from the inside to the outside of the connecting male base; one end of the spring is fixed to the inner wall of the receiving groove, and the other end is connected to the buckle; one end of the buckle is connected to the spring, and the other end protrudes from the end of the connecting male base and is provided with a boss; the buckle button presses on the buckle and protrudes from the side of the connecting male base;

[0016] The two inner side walls of the connecting female seat are provided with first protrusions for hooking the buckle;

[0017] Second protrusions for hooking the buckles are provided on the two inner side walls of the transfer female seat.

[0018] By providing snaps, bosses and bumps, the male connector and the adapter female connector or the female connector are firmly connected, thereby preventing the male connector and the adapter female connector or the female connector from being disconnected when mated, thereby preventing the charging device from being disconnected from an ordinary household power supply device or a dedicated power supply device. At the same time, it also prevents dust and / or water from entering the male connector, the adapter female connector and the female connector, causing problems such as power leakage.

[0019] For better understanding and implementation, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the connection state between the charging connection device and the adapter in an embodiment of the present invention;

[0021] Figure 2 Schematic diagram of the connection between the charging connection device and the female connection socket in an embodiment of the present invention;

[0022] Figure 3 This is a functional block diagram of a charging connection device according to an embodiment of the present invention;

[0023] Figure 4 Schematic diagram of the connection structure of the detector in an embodiment of the present invention;

[0024] Figure 5 is a principle block diagram of a charging connection device in another embodiment;

[0025] Figure 6 A schematic diagram of the structure of a transfer female socket and a connecting male socket in one embodiment;

[0026] Figure 7 A schematic diagram of the structure of a transfer female socket and a connecting male socket in one embodiment;

[0027] Figure 8 This is a schematic diagram of an embodiment in which the female adapter and the male connector are securely connected. DETAILED DESCRIPTION

[0028] Please also see Figure 1 and Figure 2 , Figure 1 Schematic diagram of the connection state between the charging connection device and the adapter in an embodiment of the present invention; Figure 2 Schematic diagram of the connection state between the charging connection device and the connection socket in an embodiment of the present invention. The charging device includes an adapter 1 and a charging connection device 2 for connecting to an electrical device. When the charging connection device 2 is connected to the connection socket 3 of the first power supply device 4, the charging connection device 2 sends a first output signal to the electrical device 6. The electrical device 6 can obtain power from the first power supply device 4 based on the first output signal. When the charging connection device 2 is connected to the second power supply device 5 through the adapter 1, the charging connection device 2 sends a second output signal to the electrical device 6. The electrical device 6 can obtain power from the second power supply device 5 based on the first output signal. In this way, the electrical device 6 can be connected to different power supply devices through the charging connection device 2 and determine the type of power supply device.

[0029] In one embodiment, the first power supply device is a dedicated power supply device with a voltage of 220V, a current of 32A, and a power supply of 7kW; the second power supply device is an ordinary household power supply device with a voltage of 220V, a current of 16A, and a power supply of 3kW. The electrical device 6 is an electric car. Through the adapter 1 and the charging connection device 2, the electrical device 6 can be connected to the first power supply device, such as a dedicated power supply device, to obtain high-power electricity and achieve fast charging; or it can be connected to the second power supply device, such as an ordinary household power supply device, at home through the adapter to achieve convenient charging and easily determine the type of power supply device.

[0030] The adapter 1 includes a power plug 11 for connecting to the live wire, neutral wire, and ground wire on a common household socket 51 of the second power supply device 5, and a female adapter 12 for connecting to the power plug 11. The female adapter 12 is provided with a first detection port 121, as well as a first live wire connection port 122, a first neutral wire connection port 123, and a first ground connection port 124 for connecting to the power plug 11. The first detection port 121 is connected to the first ground connection port 124 via a conductor, so that the first detection port 121 and the first ground connection port 124 have the same electrical potential.

[0031] See also Figure 3 , which is a block diagram of the principle of a charging connection device according to an embodiment of the present invention. The charging connection device 2 comprises a charging cable 21, a male connector 22, a vehicle plug 23, and a controller 24. One end of the charging cable 21 is connected to the male connector 22, and the other end is fixed to the vehicle plug 23 via the controller 24. The male connector 22 is provided with a detector 221, as well as a second live wire connection terminal 222, a second neutral wire connection terminal 223, a second ground connection terminal 224, and a second detection terminal 225 for plugging into the respective connection ports on the female adapter 12. The detector 221 is connected to the second detection terminal 225. The controller 24 is connected to the detector 221 via the charging cable 21 and obtains the potential of the second detection terminal 225.

[0032] In one embodiment, the detector 221 includes a first resistor R1 and a second resistor R2. A first connection end of the first resistor is connected to a detection power supply VCC; a second connection end of the first resistor R1 is connected to a first connection end of the second resistor R2; a second connection end of the second resistor R2 is grounded; and a second detection terminal 225 is connected between the second connection end of the first resistor and the first connection end of the second resistor R2. The controller 24 is connected between the second connection end of the first resistor R1 and the first connection end of the second resistor R2 via the charging cable 21 and is connected to the second detection terminal 225 to obtain potential information of the second detection terminal 225.

[0033] In one embodiment, a female connector 3 is provided on the first power supply device 4. The female connector 3 is provided with a third detection port 31, a third live wire connection port 32, a third neutral wire connection port 33, and a third ground connection port 34, which are respectively connected to the live wire, neutral wire, and ground wire of the first power supply device 4. The female connector 3 is an industrial socket.

[0034] See also Figure 4 , which is a schematic diagram of the connection structure of the detector in an embodiment of the present invention.

[0035] In one embodiment, the controller 24 obtains the potential information of the second detection terminal 225 to determine the type of the power supply device and to send the first output signal or the second output signal to the power-consuming device. Specifically, when the male connector is plugged into the female connector 3 of the first power supply device 4, such as a dedicated power supply device, that is, when the second detection terminal 225 is plugged into the third detection port 31, the potential information of the second detection terminal 225 obtained is the potential The controller 24 sends a first output signal to the electrical device 6 by adjusting the duty cycle of the PWM signal; if the connecting male socket 22 is plugged into the second power supply device 5 such as the adapter female socket 12 of an ordinary household power supply device, that is, when the second detection terminal 225 is plugged into the first detection port 121, when the potential information of the second detection terminal 225 obtained is a potential of 0, the controller 24 sends a second output signal to the electrical device 6 by adjusting the duty cycle of the PWM signal.

[0036] In order to make the appearance more neat and beautiful, improve reliability, and prevent the problem of cable damage caused by adding cables when the controller is placed on an external cable to control the protection device, in one embodiment, the controller 24 is placed in the vehicle plug 23.

[0037] In order to increase the charging power, in one embodiment, a cable control protection device (not shown) is provided on the charging cable 21; the controller 24 is arranged in the cable control protection device. In this case, the volume of the controller 24 is not limited by the volume of the charging connection device 2, so the charging power can be increased.

[0038] In this embodiment, the power-consuming device 6 is an electric vehicle; the charging device is an AC charging device; and the charging cable 21 is connected to the vehicle plug 23 via the controller 24. When the vehicle plug 23 is connected to the AC charging port of the electric vehicle, the on-board charger (OBC) in the electric vehicle converts the AC power into DC power, thereby charging the electric vehicle with the DC power.

[0039] See also Figure 5, which is a principle block diagram of the charging connection device in another embodiment. In one embodiment, the electrical device is an electric vehicle; the charging device is a DC charging device; the charging device also includes an AC / DC converter 25. The charging cable 21 converts AC power into DC power after passing through the controller 24 and the AC / DC converter 25, and transmits it to the electrical device such as an electric car. Among them, the AC / DC converter 25 can be set in the vehicle plug 23, and can also be set in the cable control and protection device. When the vehicle plug 23 is connected to the DC charging interface of the electric vehicle, the charging device directly provides DC power to the electric vehicle, and thus is not subject to the power limit of the OBC, and obtains a greater charging power. The structure of the existing vehicle plug 23 is a traditional structure and will not be described here.

[0040] Please also see Figures 6 to 8 , Figure 6 A schematic diagram of the structure of a transfer female socket and a connecting male socket in one embodiment; Figure 7 A schematic diagram of the structure of a transfer female socket and a connecting male socket in one embodiment; Figure 8 This is a schematic diagram of an embodiment in which the female adapter and the male connector are securely connected.

[0041] In order to prevent the male connector 22 from being disconnected from the female adapter 12 when mated, thereby disconnecting the charging device from the second power supply device 5, and to prevent dust and / or water from entering the male connector 22 and the female adapter 12, thereby causing problems such as power leakage, in a more preferred embodiment, the male connector 22 is provided with a receiving groove on both sides of the end facing the power supply device; a spring 226, a buckle 227, and a buckle button 228 are provided in the receiving groove in a direction from the inside to the outside of the male connector 22; one end of the spring 226 is fixed to the inner wall of the receiving groove, and the other end is connected to the buckle 227; one end of the buckle 227 is connected to the spring 226, and the other end protrudes from the end of the male connector 22 and is provided with a boss 2271. The buckle button 228 presses on the buckle 227 and protrudes from the side of the male connector 22 to facilitate the user to press the buckle button 228. The two inner side walls of the transfer female base 12 are provided with first protrusions 125 for hooking the buckle 227. When the connecting male base 22 needs to be inserted into the transfer female base 12, the buckle 227 is moved toward the inside of the connecting male base 22 by pressing the buckle button 228, and then the connecting male base 22 is moved toward the direction close to the transfer female base 12, so that the boss 2271 on the buckle 227 is hooked on the first protrusion 125. When the user does not press the buckle button 228, the buckle 227 returns to its original position under the pressure of the spring 226, so that the boss 2271 is locked on the first protrusion 125, thereby achieving a stable connection between the connecting male base 22 and the transfer female base 12. When the connecting male socket 22 needs to be separated from the adapter female socket 12, by pressing the snap button 228, the snap 227 moves toward the inside of the connecting male socket 22, thereby separating the boss 2271 of the snap 227 from the first protrusion 125, and then moving the connecting male socket 22 away from the adapter female socket 12, thereby separating the connecting male socket 22 from the adapter female socket 12.

[0042] In order to prevent the male connector 22 from being disconnected from the female connector 3 when mated, thereby disconnecting the charging device from the first power supply device 4, and also to prevent dust and / or water from entering the male connector 22 and the female connector 3, thereby causing problems such as power leakage, in a preferred embodiment, the two inner side walls of the female connector 3 are also provided with second protrusions for hooking the buckle 227. The connection principle of the female connector 3 is the same as that of the male connector 22, and will not be repeated here.

[0043] During use, when the connecting male socket 22 is plugged into the connecting female socket 3 of the first power supply device 4, the second detection terminal 225 of the connecting male socket 22 is plugged into the third detection port 31 of the connecting female socket 3. Since the third detection port 31 of the connecting female socket 3 is not connected to any component, at this time, the second detection terminal 225 on the connecting male socket 22 is disconnected, and the potential supplied by the detector 221 to the second detection terminal 225 is At this time, the controller 24 obtains a first detection signal, indicating that the male connector 22 is plugged into the female connector 3, that is, the charging device connected to the male connector 22 is connected to the first power supply device 4. At this time, the controller 24 increases the output power by adjusting the duty cycle of the PWM signal. If the charging device is a charging connection device for an electric vehicle, a 7KW high-power output is provided through the charging connection device for the electric vehicle, and then connected to the AC interface of the electric vehicle through the AC vehicle plug to charge the electric vehicle; or converted into DC power of equal power through an AC / DC converter, and then connected to the DC charging interface of the electric vehicle through the DC vehicle plug to charge the electric vehicle.

[0044] When the connecting male socket 22 is plugged into the second power supply device 5 through the adapter female socket 12, the second detection terminal 225 of the connecting male socket 22 is plugged into the first detection port 121 of the adapter female socket 12. Since the first detection port 121 of the adapter female socket 12 is connected to the first ground connection port 124, at this time, the potential of the first detection port 121 is 0, and the second detection terminal 225 on the connecting male socket 22 is also 0. At this time, the controller 24 obtains a second detection signal, indicating that the connecting male socket 22 is plugged into the female socket of the adapter female socket 12, that is, the charging device connected to the connecting male socket 22 is connected to an ordinary household power supply device. At this time, the controller 24 reduces the output power by adjusting the duty cycle of the PWM signal to prevent damage to the circuit or socket of the second power supply device 5 connected to the adapter female socket 12. If the charging device is a charging connection device for an electric vehicle, the charging connection device for the electric vehicle adjusts to provide a 3.5KW low-power output, which is then connected to the electric vehicle's AC interface through an AC vehicle plug to charge the electric vehicle; or it converts to DC power of equal power through an AC / DC converter, which is then connected to the electric vehicle's DC charging interface through a DC vehicle plug to charge the electric vehicle.

[0045] Compared with the existing technology, the charging device of the present invention can be connected to a first power supply device such as a dedicated power supply device to obtain high-power electricity and achieve fast charging; it can also be connected to a second power supply device such as an ordinary household power supply device. It can be connected to an ordinary household power supply device at home through an adapter to achieve convenient charging. It can also determine the type of power supply device and prompt the power-consuming device to the type of power supply device, which greatly facilitates user use and saves costs and social resources.

[0046] The above-described embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A charging device, characterized in that: It includes an adapter and a charging connection device for connecting an electrical device; When the charging connection device is connected to the connection socket of the first power supply device, the charging connection device sends a first output signal to the power-consuming device; When the charging connection device is connected to the second power supply device through the adapter, the charging connection device sends a second output signal to the power-consuming device; the adapter includes a power supply plug for connecting to the live wire, the neutral wire and the ground wire on the second power supply device, and a female adapter for connecting to the power supply plug; The adapter female socket is provided with a first detection port, a first live wire connection port, a first neutral wire connection port and a first ground connection port for connecting to a power supply plug; The first detection port is connected to the first ground connection port through a conductor; The charging connection device includes a charging cable, a connecting socket, a vehicle plug and a controller; one end of the charging cable is connected to the connecting socket, and the other end is fixed to the vehicle plug via the controller; the connecting socket is provided with a detector, a second live wire connection terminal, a second neutral wire connection terminal, a second ground connection terminal and a second detection terminal; the detector is connected to the second detection terminal; the controller is connected to the detector via the charging cable, and obtains the potential information of the second detection terminal, and determines the type of the power supply device according to the potential information, so as to send a first output signal or a second output signal to the electrical equipment; the connecting socket is provided with a third detection port, and a third live wire connection port, a third neutral wire connection port and a third ground connection port which are respectively connected to the live wire, neutral wire and ground wire of the first power supply device.

2. The charging device according to claim 1, characterized in that: The detector includes a first resistor and a second resistor connected in series; the first connection end of the first resistor is connected to a detection power supply; the second connection end of the first resistor is connected to the first connection end of the second resistor; the second connection end of the second resistor is grounded; the second detection terminal is connected between the second connection end of the first resistor and the first connection end of the second resistor; the controller is connected between the second connection end of the first resistor and the first connection end of the second resistor via the charging cable, and is connected to the second detection terminal.

3. The charging device according to claim 1, characterized in that: The controller is disposed in the vehicle plug.

4. The charging device according to claim 1, characterized in that: A cable control protection device is arranged on the charging cable; and the controller is arranged in the cable control protection device.

5. The charging device according to claim 1, characterized in that: It also includes an AC / DC converter. The charging cable converts the transmitted alternating current into direct current after passing through the controller and the AC / DC converter, and transmits it to the power-consuming device.

6. The charging device according to any one of claims 1 to 5, characterized in that: Receiving grooves are respectively provided on both sides of the end of the connecting male seat; a spring, a buckle and a buckle button are sequentially provided in the receiving groove along the direction from the inside to the outside of the connecting male seat; one end of the spring is fixed on the inner wall of the receiving groove, and the other end is connected to the buckle; one end of the buckle is connected to the spring, and the other end protrudes from the end of the connecting male seat and is provided with a boss; the buckle button is pressed on the buckle and protrudes from the side of the connecting male seat.

7. The charging device according to claim 6, characterized in that: The two inner side walls of the connecting female seat are provided with first protrusions for hooking the buckle.

8. The charging device according to claim 6, characterized in that: The two inner side walls of the transfer female seat are provided with second protrusions for hooking the buckle.

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