CN109412219B

CN109412219B - Charging framework suitable for charging multiple loads and charging seat device thereof

Info

Publication number: CN109412219B
Application number: CN201710711468.5A
Authority: CN
Inventors: 杨士弘
Original assignee: Mitac Computer Kunshan Co Ltd; Getac Technology Corp
Current assignee: Mitac Computer Kunshan Co Ltd; Getac Technology Corp
Priority date: 2017-08-18
Filing date: 2017-08-18
Publication date: 2023-02-07
Anticipated expiration: 2037-08-18
Also published as: CN109412219A

Abstract

The invention discloses a charging framework suitable for charging multiple loads and a charging seat device thereof. The charging seat device comprises a power input port, a power output contact, a first connecting port, a second connecting port, a first anti-reflux switch circuit and a second anti-reflux switch circuit. The first connection port is coupled to the power input port. The first anti-backflow switch circuit is coupled between the power input port and the power output contact to provide a first power supply path. The second anti-reverse flow switch circuit is coupled between the second connection port and the power output contact to provide a second power supply path. The power output contact receives a power signal through one of the first power supply path and the second power supply path and outputs the power signal. By using the charging framework and the charging seat device thereof suitable for charging multiple loads, a plurality of charging seat devices share the same power converter, and when a plurality of loads are charged simultaneously, one power converter only occupies one socket.

Description

Charging framework suitable for charging multiple loads and charging seat device thereof

[ technical field ] A method for producing a semiconductor device

The present invention relates to a charging device, and more particularly, to a charging structure suitable for charging multiple loads.

[ background of the invention ]

In the conventional electronic products, the portable electronic product includes a rechargeable battery. The rechargeable battery can be divided into a detachable type and a non-detachable type, the detachable rechargeable battery can be independently placed on the charging seat, and the non-detachable rechargeable battery can be connected to the charging seat through the electronic product. When the power of the rechargeable battery is exhausted, the user can connect the charging seat to the external power supply and provide the power to the rechargeable battery through the charging seat, and the rechargeable battery can store the power to supply the power required by the electronic product during operation.

Generally, one battery corresponds to one charging cradle, and one charging cradle corresponds to one power converter. When a plurality of batteries need to be charged simultaneously, a plurality of power converters need to be connected to a plurality of charging seats respectively to charge the batteries simultaneously. However, the simultaneous use of multiple power converters occupies multiple sockets, and the user needs to store multiple power converters, and even record which charging socket the power converter corresponds to, so as to avoid the inconvenience of connecting the power converter to the wrong charging socket.

[ summary of the invention ]

In one embodiment, a charging device includes a power input port, a power output contact, a first connection port, a second connection port, a first anti-backflow switch circuit, and a second anti-backflow switch circuit. The first connection port is coupled to the power input port. The first anti-backflow switch circuit is coupled between the power input port and the power output contact to provide a first power supply path. The second anti-reverse-flow switch circuit is coupled between the second connection port and the power output joint to provide a second power supply path. The power output contact receives a power signal through one of the first power supply path and the second power supply path and outputs the power signal.

In one embodiment, a charging architecture adapted to charge multiple loads includes a first charging dock device and a second charging dock device removably coupled to the first charging dock device. The first charging seat device comprises a first power input port, a first connection port, a second connection port, a first anti-reverse flow switch circuit, a second anti-reverse flow switch circuit and a first power output contact. The first power input port receives an external power source. The first connection port is coupled to the first power input port to receive an external power and output the external power. The first anti-reverse-flow switch circuit is coupled to the first power input port to output a first power signal according to an external power. The second anti-reverse flow switch circuit is coupled with the second connecting port. The first power output contact is coupled to the first anti-backflow switch circuit and the second anti-backflow switch circuit, and receives the first power signal through the first anti-backflow switch circuit and outputs the first power signal. The second charging seat device comprises a second power input port, a third connecting port, a fourth connecting port, a third anti-backflow switch circuit, a fourth anti-backflow switch circuit and a second power output contact. The third connection port is coupled to the second power input port. The fourth connection port is removably coupled to the first connection port to receive an external power source via the first connection port. And the third anti-backflow switch circuit is coupled with the second power supply input port. The fourth anti-reverse-flow switch circuit is coupled to the fourth connection port to output a second power signal according to the external power. The second power output contact is coupled with the third backflow prevention switch circuit and the fourth backflow prevention switch circuit, and receives a second power signal through the fourth backflow prevention switch circuit and outputs the second power signal.

In summary, according to the charging architecture and the charging-stand device thereof suitable for charging multiple loads of the present invention, a plurality of charging-stand devices share the same power converter, a user only needs to store one power converter, and when a plurality of loads are charged simultaneously, one power converter only occupies one socket. Moreover, the same charging seat device can be used as any one of the first-stage charging seat and the later-stage charging seat; the user does not need to identify the first stage charging seat, the second stage charging seat, or any one of the first stage charging seats or the second stage charging seats when coupling the plurality of charging seats.

[ description of the drawings ]

Fig. 1 is an external view of a charging-stand device according to an embodiment of the invention.

Fig. 2 is a circuit diagram of the charging stand device of fig. 1 according to a first embodiment.

Fig. 3 is an external view of a charging architecture suitable for charging multiple loads according to a first embodiment of the present invention.

Fig. 4 is a circuit diagram of the charging architecture of fig. 3.

Fig. 5 is a circuit diagram of a second embodiment of the charging device of fig. 1.

Fig. 6 is an external view of a charging architecture suitable for charging multiple loads according to a second embodiment of the present invention.

Fig. 7 is a circuit diagram of the first charging stand device in the charging architecture of fig. 6.

Fig. 8 is a circuit diagram of the second charging stand device in the charging architecture of fig. 6.

Fig. 9 is a circuit diagram of a third charging stand device in the charging architecture of fig. 6.

[ detailed description ] A

Fig. 1 is an external view of a charging-stand device 1 according to an embodiment of the present invention. Referring to fig. 1, the charging device 1 at least includes a power input port 11, a first connection port 13, and a second connection port 14, and the charging device 1 may include a connector (connector) 19. The charging device 1 can be coupled to other charging devices, and the charging device 1 can be a first-level charging socket or not. When the charging-stand device 1 is a first-stage charging stand, as shown in fig. 1, the charging-stand device 1 receives an external power supply provided by the power converter 2 through the power input port 11, and supplies power to the load 3 through the connector 19; the charging-stand device 1 outputs the external power received by the power input port 11 through the first connection port 13, so that the subsequent charging stand supplies power to other loads according to the external power output by the first connection port 13; on the other hand, when the charging-stand device 1 is not the first-stage charging-stand device, the charging-stand device 1 receives the external power supplied from the previous-stage charging-stand through the second connection port 14, and supplies power to the load 3 through the connector 19.

In fig. 1, the load 3 is taken as a rechargeable battery as an example, and thus, as shown in fig. 1, the connector 19 may include a plurality of contacts or pins suitable for the rechargeable battery, and the contacts or pins of the connector 19 are made of metal. In other embodiments, the load 3 may be a mobile phone or a tablet computer, and the connector 19 may be a Universal Serial Bus (USB) port suitable for the mobile phone or the tablet computer.

Fig. 2 is a circuit diagram of the charging stand device 1 of fig. 1 according to a first embodiment. As shown in fig. 2, the charging stand device 1 further includes a first reverse-flow prevention switch circuit 15, a second reverse-flow prevention switch circuit 16, and a power output contact 12. The first connection port 13 is coupled to the power input port 11. The first reverse flow prevention switch circuit 15 is coupled between the power input port 11 and the power output contact 12, and the second reverse flow prevention switch circuit 16 is coupled between the second connection port 14 and the power output contact 12. The first reverse flow prevention switch circuit 15 provides a power supply path (hereinafter referred to as a first power supply path) between the power input port 11 and the power output contact 12, and the second reverse flow prevention switch circuit 16 provides a power supply path (hereinafter referred to as a second power supply path) between the second connection port 14 and the power output contact 12.

In the first embodiment, the cradle apparatus 1 can be regarded as a first-stage cradle apparatus or a second-stage cradle apparatus. The power output contact 12 receives a power signal through one of the first power path and the second power path and outputs the power signal. In detail, when the charging socket apparatus 1 is a first-stage charging socket, the power input port 11 is coupled to the power converter 2 and the first connection port 13 is coupled to a later-stage charging socket, the power converter 2 provides an external power to the power input port 11, the first anti-backflow switch circuit 15 receives the external power through the power input port 11, the first anti-backflow switch circuit 15 generates a first power signal S1 according to the external power provided by the power converter 2, and the power output contact 12 receives the first power signal S1 through the first power supply path and outputs the first power signal S1; on the other hand, when the charging device 1 is a second stage charging cradle, the power input port 11 is not coupled to the power converter 2 and the second connection port 14 is coupled to a connection port of the first stage charging cradle, the connection port of the first stage charging cradle provides an external power to the second connection port 14, the second anti-backflow switch circuit 16 receives the external power through the second connection port 14, the second anti-backflow switch circuit 16 generates a second power signal S2 according to the external power provided by the first stage charging cradle, and the power output contact 12 receives the second power signal S2 through the second power supply path and outputs the second power signal S2.

In one embodiment, the charging stand device 1 can further include a charging circuit 18, and the charging circuit 18 is coupled to the first anti-backflow switch circuit 15 and the second anti-backflow switch circuit 16. As shown in fig. 2, the charging circuit 18 may be coupled between the power output terminal 12 and the connector 19 to couple the first anti-backflow switch circuit 15 and the second anti-backflow switch circuit 16 through the power output terminal 12. When the charging stand device 1 is a first-stage charging stand, the charging circuit 18 receives a first power signal S1 generated by the first anti-backflow switch circuit 15; when the charging-stand device 1 is a second-stage charging stand, the charging circuit 18 receives the second power signal S2 generated by the second anti-backflow switch circuit 16. The charging circuit 18 generates a charging power according to the first power signal S1 and the second power signal S2, and provides the charging power to the connector 19. When the connector 19 is coupled to the load 3, the connector 19 outputs the charging power to the load 3, so that the load 3 is charged.

Further, in the case that the charging-stand device 1 is a first-stage charging stand, the first connection port 13 receives the external power provided by the power converter 2 through the power input port 11, and the first connection port 13 outputs the external power provided by the power converter 2, so that the later-stage charging stand supplies power to other loads according to the external power output by the first connection port 13.

In one embodiment, the first connection port 13 is mated to the second connection port 14; the first connection port 13 may be coupled to a second connection port of another charging apparatus that is the same as the charging apparatus 1, so as to provide an external power source to the other charging apparatus; the second connection port 14 can be coupled to the first connection port of another charging device that is the same as the charging device 1 to receive the external power provided by the other charging device.

In one embodiment, as shown in fig. 2, the first reverse-flow prevention switch circuit 15 includes two transistors (hereinafter referred to as the first transistor 151 and the second transistor 152, respectively, for convenience of description). The first transistor 151 is coupled to the power input port 11. The first transistor 151 is controlled by the external power received by the power input port 11. The second transistor 152 is coupled to the first transistor 151, the power input port 11 and the power output node 12. The second transistor 152 is controlled by the first transistor 151. When the charging device 1 is a first-stage charging device, the external power provided by the power converter 2 turns on the first transistor 151. When the first transistor 151 is turned on, the first transistor 151 turns on the second transistor 152. When the second transistor 152 is turned on, the second transistor 152 generates the first power signal S1 to the power output node 12.

Further, for example, the first transistor 151 and the second transistor 152 are Metal Oxide Semiconductor (MOS) field effect transistors, and the first transistor 151 and the second transistor 152 are N-type transistor and P-type transistor, respectively, as shown in FIG. 2, the drain terminal and the source terminal of the second transistor 152 are coupled to the power input port 11 and the power output contact 12, respectively; the gate terminal of the second transistor 152 is coupled to its drain terminal. The drain terminal of the first transistor 151 is coupled to the gate terminal of the second transistor 152; the gate terminal and the source terminal of the first transistor 151 are coupled to the power input port 11 and the ground GND, respectively.

When the charging device 1 is a first-stage charging device, the gate terminal of the first transistor 151 receives an external power from the power input port 11, the external power turns on the first transistor 151 and turns off the second transistor 152, the source terminal of the first transistor 151 is turned on at the drain terminal thereof, the drain terminal thereof is turned on to ground, and the drain terminal of the first transistor 151 has a low potential. The drain terminal of the first transistor 151 transfers a low potential to the gate terminal of the second transistor 152, turning on the second transistor 152. When the second transistor 152 is turned on, the second transistor 152 generates a first power signal S1 to the power output node 12 according to the external power received by the drain terminal thereof.

In one embodiment, the second reverse-flow prevention switch circuit 16 includes two transistors (hereinafter referred to as the third transistor 161 and the fourth transistor 162, respectively, for convenience of description). The third transistor 161 is coupled to the second connection port 14. The third transistor 161 is controlled by the external power received by the second connection port 14. The fourth transistor 162 is coupled to the third transistor 161, the second connection port 14 and the power output node 12. The fourth transistor 162 is controlled by the third transistor 161. When the charging device 1 is a second stage charging cradle, the external power provided by the first stage charging cradle turns on the third transistor 161, when the third transistor 161 is turned on, the third transistor 161 turns on the fourth transistor 162, and when the fourth transistor 162 is turned on, the fourth transistor 162 generates the second power signal S2 to the power output terminal 12.

For example, the third transistor 161 and the fourth transistor 162 are Metal Oxide Semiconductor (MOS) field effect transistors, and the third transistor 161 and the fourth transistor 162 are N-type transistor and P-type transistor, respectively, as shown in FIG. 2, the drain terminal and the source terminal of the fourth transistor 162 are coupled to the second connection port 14 and the power output contact 12, respectively; the gate terminal of the fourth transistor 162 is coupled to the drain terminal thereof. The drain terminal of the third transistor 161 is coupled to the gate terminal of the fourth transistor 162; the gate terminal and the source terminal of the third transistor 161 are coupled to the second connection port 14 and the ground GND, respectively.

When the charging device 1 is a second stage charging cradle, the second connection port 14 receives an external power provided by the first stage charging cradle, the gate of the third transistor 161 receives the external power from the second connection port 14, the external power turns on the third transistor 161 and turns off the fourth transistor 162, the source of the third transistor 161 is turned on at the drain, the drain is turned on at the ground, and the drain has a low potential. The drain terminal of the third transistor 161 transmits a low potential to the gate terminal of the fourth transistor 162, turning on the fourth transistor 162. When the fourth transistor 162 is turned on, the fourth transistor 162 generates a second power signal S2 to the power output node 12 according to the external power received by the drain terminal from the second connection port 14.

Therefore, no matter the charging stand device 1 is the first stage charging stand or the second stage charging stand, the two

transistors

151 and 152 of the first anti-reverse-flow switch circuit 15 can prevent a reverse current from flowing back from the power output contact 12 to the power input port 11, and the two

transistors

161 and 162 of the second anti-reverse-flow switch circuit 16 can prevent the reverse current from flowing back from the power output contact 12 to the second connection port 14.

In one embodiment, as shown in fig. 2, the first anti-reverse current switch circuit 15 further includes a Zener diode Z1. The anode and cathode of the zener diode Z1 are coupled to the gate terminal of the first transistor 151 and the ground GND, respectively; the second reverse flow prevention switch circuit 16 further includes a zener diode Z2. The anode and cathode of the zener diode Z2 are coupled to the gate terminal of the third transistor 161 and the ground GND, respectively.

Fig. 3 is an external view of a charging architecture suitable for charging multiple loads according to a first embodiment of the present invention. Fig. 4 is a circuit diagram of the charging architecture of fig. 3. Referring to fig. 3 and 4, the charging architecture for charging multiple loads includes two charging-stand devices coupled to each other (for convenience of description, the two charging-stand devices are respectively referred to as a first charging-stand device 4 and a second charging-stand device 5). The first charging device 4 and the second charging device 5 have the same components, the first charging device 4 can provide the first load 7 for charging, and the second charging device 5 can provide the second load 8 for charging.

The first charging stand device 4 includes a first power input port 41, a first power output contact 42, a first connection port 43, a second connection port 44, a first reverse-flow prevention switch circuit 45, a second reverse-flow prevention switch circuit 46, a first charging circuit 48, and a first connector 49. The second charging stand device 5 includes a second power input port 51, a second power output contact 52, a third connection port 53, a fourth connection port 54, a third backflow prevention switch circuit 55, a fourth backflow prevention switch circuit 56, a second charging circuit 58, and a second connector 59. The connection relationship between the components of the two charging-

stand devices

4 and 5 is the same as the connection relationship between the components of the charging-stand device 1, and the connection relationship between the components has been described in detail before, and is not described herein again.

The first charging device 4 and the second charging device 5 are a first stage charging device and a second stage charging device, respectively. The first power input port 41 of the first charging device 4 is coupled to the power converter 2. The first connection port 43 of the first charging apparatus 4 is matched with the fourth connection port 54 of the second charging apparatus 5, and the first connection port 43 is removably coupled to the fourth connection port 54 through the connection line 40, so that the first charging apparatus 4 is removably coupled to the second charging apparatus 5. Accordingly, the external power supplied from the power converter 2 is input through the first power input port 41, and the first backflow prevention switch circuit 45 of the first charging stand device 4 generates the first power signal S1 according to the external power. The first power output terminal 42 outputs the first power signal S1 to the first charging circuit 48, so that the first connector 49 provides the charging power to charge the first load 7. On the other hand, the first connection port 43 outputs the external power received by the first power input port 41 to the fourth connection port 54. The fourth reverse flow prevention switch circuit 56 receives the external power from the fourth connection port 54, and the fourth reverse flow prevention switch circuit 56 generates the second power signal S2 according to the external power. The second power output pad 52 receives and outputs the second power signal S2. The second power output node 52 outputs the second power signal S2 to the second charging circuit 58, so that the second connector 59 provides the charging power to charge the second load 8.

In the first embodiment of the charging-stand device, when the charging-stand device 1 is a second-stage charging stand, the charging-stand device 1 cannot supply power to a later-stage charging stand, in other words, the charging-stand device 1 cannot be a third-stage charging stand. In addition, in the first embodiment of the charging architecture, when the other charging-stand device is coupled to the third connection port 53 of the second charging-stand device 5, the other charging-stand device cannot obtain power through the third connection port 53. In detail, as shown in fig. 2, the first connection port 13 is not coupled to the second connection port 14, when the charging device 1 is a second stage charging dock, the first connection port 13 does not output the external power received by the second connection port 14, and the later stage charging dock cannot obtain the power through the first connection port 13; as shown in fig. 4, the third connection port 53 of the second charging apparatus 5 is not coupled to the fourth connection port 54, the third connection port 53 does not output the external power received by the fourth connection port 54, and when other charging apparatuses are coupled to the third connection port 53, the other charging apparatuses cannot obtain the power through the third connection port 53. Therefore, only two of the charging devices can supply power to the load after being coupled to more than two charging devices, so that the situation that the power converter 2 needs to supply power to the charging devices with excessive number due to the fact that a user is improperly coupled to the charging devices with excessive number can be avoided, and the power converter 2 is easily damaged due to high temperature.

Another embodiment in which three cradle devices can power a load after more than two cradle devices are coupled is described next below.

Fig. 5 is a circuit diagram of a second embodiment of the charging stand device 1 of fig. 1. Referring to fig. 5 and fig. 2, the difference between the second embodiment and the first embodiment is that the number of the backflow-preventing switch circuits is three, and the charging stand device 1 further includes a third backflow-preventing switch circuit 17 coupled between the second connection port 14 and the power output contact 12. The first connection port 13 includes two different contacts (hereinafter, referred to as a first contact 131 and a second contact 132), and the second connection port 14 includes two different contacts (hereinafter, referred to as a third contact 141 and a fourth contact 142). The first contact 131 is coupled to the power input port 11; the second contact 132 is coupled to the third contact 141; the second reverse flow prevention switch circuit 16 and the third reverse flow prevention switch circuit 17 are coupled to different contacts of the second connection port 14, the second reverse flow prevention switch circuit 16 is coupled to the third contact 141, the third reverse flow prevention switch circuit 17 is coupled to the fourth contact 142, and the second reverse flow prevention switch circuit 16 provides a second power supply path between the third contact 141 and the power output contact 12. The third backflow prevention switching circuit 17 provides a third power supply path between the fourth contact 142 and the power output contact 12.

In the second embodiment, when the same three charging sockets are coupled and the charging socket apparatus 1 is a first stage charging socket, the power input port 11 is coupled to the power converter 2, and the first connection port 13 is removably coupled to a second connection port of a later stage charging socket by a connection line. The first contact 131 receives an external power supply provided by the power converter 2 through the power input port 11, and the first contact 131 outputs the external power supply to the second connection port of the rear charging dock.

Furthermore, when the three charging sockets are coupled and the charging socket apparatus 1 is a second-stage charging socket, the power input port 11 is not coupled to the power converter 2, the second connection port 14 is removably coupled to the first connection port of the preceding-stage charging socket through a connection line, and the first connection port 13 is removably coupled to the second connection port of the subsequent-stage charging socket through another connection line. The third contact 141 of the second connection port 14 receives the external power provided by the first connection port of the front charging dock, and the second backflow prevention switch circuit 16 receives the external power through the third contact 141 and generates the second power signal S2. The second contact 132 of the first connection port 13 receives the external power supplied from the front charging cradle via the third contact 141 and supplies the external power to the second connection port of the rear charging cradle.

Further, when the same three charging sockets are coupled and the charging socket apparatus 1 is a third-stage charging socket, the power input port 11 is not coupled to the power converter 2 and the second connection port 14 is removably coupled to the first connection port of the preceding charging socket. The fourth contact 142 of the second connection port 14 receives the external power provided by the first connection port of the front charging dock, and the third backflow prevention switch circuit 17 receives the external power from the fourth contact 142 of the third power supply path and generates a third power signal S3. Therefore, since the first connection port 13 is not coupled to the fourth connection point 142 of the second connection port 14, when the charging device 1 is a third-stage charging device, another charging device cannot obtain the external power received by the fourth connection point 142 from the first connection port 13; in other words, after more than three charging-stand devices are coupled, only three loads can be charged, so that the user can be prevented from being improperly coupled with an excessive number of charging-stand devices.

As can be seen from the first and second embodiments, the number of the load charging circuits coupled to the charging devices is related to the number of the anti-backflow switch circuits, the number of the contacts of the first connection port 13, and the number of the contacts of the second connection port 14; when two loads are charged, the number of the reverse flow prevention switch circuit is two, and the two

connection ports

13 and 14 respectively comprise a single power supply contact; when three loads are charged, the number of the reverse flow prevention switch circuit is three and the two

connection ports

13 and 14 respectively comprise two power contacts. Therefore, when more than three loads are to be charged, the number of the backflow prevention switch circuits included in each charging stand device and the number of the power contacts included in the

connection ports

13 and 14 are the same, and so on, and will not be described herein again.

In the second embodiment, the third transistor 161 and the fourth transistor 162 are coupled to the third node 141 of the second connection port 14; when the charging device 1 is a second stage charging device, the third transistor 161 is turned on according to the external power received by the third contact 141 to turn on the fourth transistor 162 to generate the second power signal S2. In addition, in the embodiment where the third transistor 161 and the fourth transistor 162 are an N-type transistor and a P-type transistor, respectively, the gate terminal of the third transistor 161 and the drain terminal of the fourth transistor 162 are coupled to the third connection point 141 of the second connection port 14, and the third transistor 161 can be turned on according to the external power received by the gate terminal to turn on the fourth transistor 162, so that the fourth transistor 162 generates the second charging signal S2 according to the external power received by the drain terminal thereof.

In one embodiment, as shown in FIG. 5, the third backflow prevention switch circuit 17 includes two transistors (a fifth transistor 171 and a sixth transistor 172). The fifth transistor 171 is coupled to the fourth contact 142 of the second connection port 14. The fifth transistor 171 is controlled by the external power received by the fourth contact 142. The sixth transistor 172 is coupled to the fourth node 142, the fifth transistor 171 and the power output node 12. The sixth transistor 172 is controlled by the fifth transistor 171. When the charging device 1 is a third stage charging device, the external power provided by the second stage charging device turns on the fifth transistor 171, when the fifth transistor 171 is turned on, the fifth transistor 171 turns on the sixth transistor 172, and when the sixth transistor 172 is turned on, the sixth transistor 172 generates the third power signal S3 according to the external power received by the fourth contact 142.

Similarly, for example, the fifth transistor 171 and the sixth transistor 172 are Metal Oxide Semiconductor (MOS) field effect transistors, and the fifth transistor 171 and the sixth transistor 172 are N-type transistor and P-type transistor, respectively, as shown in FIG. 5, the drain terminal and the source terminal of the sixth transistor 172 are coupled to the fourth contact 142 and the power output contact 12, respectively; the gate terminal of the sixth transistor 172 is coupled to the drain terminal thereof. The drain terminal of the fifth transistor 171 is coupled to the gate terminal of the sixth transistor 172; the gate terminal and the source terminal of the fifth transistor 171 are coupled to the fourth node 142 and the ground terminal GND, respectively.

When the charging stand device 1 is a third stage charging stand, the fourth contact 142 receives an external power supply provided by the second stage charging stand, the gate terminal of the fifth transistor 171 receives the external power supply from the fourth contact 142, the external power supply turns on the fifth transistor 171, the source terminal of the fifth transistor 171 is turned on at the drain terminal, the drain terminal is turned on to ground, and at this time, the drain terminal of the fifth transistor 171 has a low potential. The drain terminal of the fifth transistor 171 transmits a low potential to the gate terminal of the sixth transistor 172, turning on the sixth transistor 172. When the sixth transistor 172 is turned on, the sixth transistor 172 generates the third charging signal S3 according to the external power received by the fourth node 142.

In one embodiment, as shown in fig. 5, the third backflow prevention switch circuit 17 further includes a zener diode Z3. The anode and cathode of the zener diode Z3 are coupled to the gate terminal of the fifth transistor 171 and the ground GND, respectively.

Fig. 6 is an external view of a charging architecture suitable for charging multiple loads according to a second embodiment of the present invention. Fig. 7 to 9 are circuit schematic diagrams of each charging stand device in the charging architecture of fig. 6, respectively. Referring to fig. 3, 4 and 6 to 9, the second embodiment of the charging structure is different from the first embodiment in that the number of the backflow prevention switch circuits included in each of the charging

apparatuses

4 and 5 is three. As shown in fig. 7, the first charging stand device 4 further includes a fifth backflow prevention switch circuit 47; as shown in fig. 8, the second charging stand device 5 further includes a sixth reverse-flow prevention switch circuit 57.

Also, in the second embodiment, the first connection port 43 includes a first contact 431 and a second contact 432, the first contact 431 is coupled to the first power input port 41; the second connection port 44 includes a third contact 441 and a fourth contact 442; the third contact 441 is coupled to the second contact 432 and the second reverse flow prevention switch circuit 46, and the second reverse flow prevention switch circuit 46 provides a power supply path between the third contact 441 and the first power output contact 42; the fourth contact 442 is coupled to the fifth reverse-flow prevention switch circuit 47, and the fifth reverse-flow prevention switch circuit 47 provides a power supply path between the fourth contact 442 and the first power output contact 42; the third connection port 53 includes a seventh contact 531 and an eighth contact 532; the seventh contact 531 is coupled to the second power input port 51; the fourth connection port 54 includes a fifth contact 541 and a sixth contact 542; the fifth junction 541 is coupled to the eighth junction 532 and the fourth reverse flow prevention switch circuit 56, and the fourth reverse flow prevention switch circuit 56 provides a power supply path between the fifth junction 541 and the second power output junction 52; the sixth junction 542 is coupled to the sixth reverse flow prevention switch circuit 57, and the sixth reverse flow prevention switch circuit 57 provides a power supply path between the sixth junction 542 and the second power output junction 52.

Further, in the second embodiment, the charging architecture further includes a third charging cradle device 6 which is a third stage charging cradle. The third charging device 6 is removably coupled to the second charging device 5 through a connection line 50, and the third charging device 6 can provide the third load 9 for charging. As shown in fig. 9, the third charging-stand device 6 includes a third power input port 61, a third power output contact 62, a fifth connection port 63, a sixth connection port 64, a seventh backflow prevention switch circuit 65, an eighth backflow prevention switch circuit 66, a ninth backflow prevention switch circuit 67, a third charging circuit 68, and a third connector 69. The fifth connection port 63 includes a ninth contact 631 and a tenth contact 632. The ninth contact 631 is coupled to the third power input port 61. The sixth connection port 64 includes an eleventh contact 641 and a twelfth contact 642. The twelfth connecting point 642 is coupled to the tenth connecting point 632 and the eighth reverse flow prevention switch circuit 66, and the eighth reverse flow prevention switch circuit 66 provides a power supply path between the twelfth connecting point 642 and the third power output connecting point 62. The eleventh connection point 641 is coupled to the ninth reverse flow prevention switch circuit 67, and the ninth reverse flow prevention switch circuit 67 provides a power supply path between the eleventh connection point 641 and the third power output connection point 62.

Therefore, when the connection line 40 couples the first connection port 43 of the first charging stand device 4 to the fourth connection port 54 of the second charging stand device 5, the connection line 40 couples the first contact 431 of the first connection port 43 to the fifth contact 541 of the fourth connection port 54 and couples the second contact 432 of the first connection port 43 to the sixth contact 542 of the fourth connection port 54; when the connection line 50 couples the third connection port 53 to the sixth connection port 64, the connection line 50 couples the seventh contact 531 of the third connection port 53 to the twelfth contact 642 of the sixth connection port 64 and couples the eighth contact 532 of the third connection port 53 to the eleventh contact 641 of the sixth connection port 64. When the first power input port 41 receives the external power provided by the power converter 2, the first contact 431 receives the external power from the first power input port 41, and the first contact 431 provides the external power to the fifth contact 541. The fifth contact 541 provides an external power source to the fourth reverse-flow prevention switch circuit 56 and the eighth contact 532. The fourth reverse-flow prevention switch circuit 56 generates the second power signal S2 according to the external power to charge the second load 8, and the eighth node 532 further provides the external power to the eleventh node 641. The eleventh connection 641 provides an external power to the ninth reverse flow prevention switch circuit 67, the ninth reverse flow prevention switch circuit 67 generates the third power signal S3 according to the external power, and the third power output connection 62 receives the third power signal S3 from the ninth reverse flow prevention switch circuit 67 to charge the third load 9.

Similarly, in the second embodiment, when the other charging-stand devices are coupled to the fifth connection port 63, as shown in fig. 9, the fifth connection port 63 of the third charging-stand device 6 is not coupled to the eleventh connection point 641 of the sixth connection port 64, and the other charging-stand devices cannot obtain the external power received by the eleventh connection point 641 through the fifth connection port 63, so as to avoid that the user is improperly coupled to a plurality of charging-stands to cause the power converter 2 to simultaneously supply power to the plurality of charging-stands, and the power converter 2 is easily damaged due to high temperature.

In one embodiment, as shown in fig. 7 to 9, the first anti-reverse-flow switch circuit 45 also includes two

transistors

451 and 452, the second anti-reverse-flow switch circuit 46 also includes two

transistors

461 and 462, the fifth anti-reverse-flow switch circuit 47 also includes two

transistors

471 and 472, the third anti-reverse-flow switch circuit 55 also includes two

transistors

551 and 552, the fourth anti-reverse-flow switch circuit 56 also includes two

transistors

561 and 562, the sixth anti-reverse-flow switch circuit 57 also includes two

transistors

571 and 572, the seventh anti-reverse-flow switch circuit 65 also includes two

transistors

651 and 652, the eighth anti-reverse-flow switch circuit 66 also includes two

transistors

661 and 662, and the ninth anti-reverse-flow switch circuit 67 also includes two

transistors

671 and 672, the components of each transistor and the operation thereof have been described in detail before, and will not be described herein again.

In one embodiment, as shown in fig. 5, the first connection port 13 and the second connection port 14 further include

ground contacts

133 and 143, respectively, coupled to the ground GND. As shown in fig. 7 to 9, the

connection ports

43, 44, 53, 54, 63, 64 further include

ground contacts

433, 443, 533, 543, 633, 643 respectively coupled to the ground GND; when the connection line 40 is coupled to the first connection port 43 and the fourth connection port 54, the connection line 40 is coupled to the ground contact 433 at the ground contact 543; when the connection line 50 is coupled to the third connection port 53 and the sixth connection port 64, the connection line 50 is coupled to the ground contact 533 and the ground contact 643. Further, the

power input ports

11, 41, 51, 61 each include a power contact and a ground contact, and the ground contacts of the

power input ports

11, 41, 51, 61 are coupled to the ground GND.

In one embodiment, as shown in fig. 7 to 9, the reverse-flow

prevention switch circuits

45, 46, 47, 55, 56, 57, 65, 66, 67 further include zener diodes Z1, Z2, Z5, Z3, Z4, Z6, Z7, Z8, Z9, respectively. The anodes of the Zener diodes Z1, Z2, Z5, Z3, Z4, Z6, Z7, Z8, Z9 are coupled to the gate terminals of the

transistors

451, 461, 471, 551, 561, 571, 651, 661, 671, respectively; the cathodes of the Zener diodes Z1-Z9 are coupled to the ground GND respectively.

In summary, according to the charging architecture and the charging-stand device thereof suitable for charging multiple loads of the present invention, a plurality of charging-stand devices share the same power converter, a user only needs to store one power converter, and when a plurality of loads are charged simultaneously, one power converter only occupies one socket. Moreover, the same charging-stand device can be used as any one of the first-stage charging-stand or the later-stage charging-stand, and the user does not need to particularly identify which one of the first-stage charging-stand or the later-stage charging-stand the charging-stand device is when coupling with the plurality of charging-stand devices.

Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.

Claims

1. A charging device, comprising:

a power input port;

a power output contact;

a first connection port coupled to the power input port;

a second connection port;

the first anti-reverse flow switch circuit is coupled between the power input port and the power output contact; and

the second anti-reverse flow switch circuit is coupled between the second connecting port and the power output contact;

wherein, when the charging device is used as a first stage charging seat: the second connection port of the charging stand device is in idle connection; the power input port of the charging seat device receives an external power supply; the first anti-reverse-flow switch circuit of the charging seat device generates a first power supply signal according to the external power supply received by the power supply input port and provides a first power supply path from the power supply input port to the power supply output contact; the power output contact of the charging seat device receives the first power signal through the first power supply path and outputs the first power signal; the first connection port of the charging seat device is connected to the second connection port of the charging seat device used as a second-stage charging seat, and the first connection port of the charging seat device receives the external power supply through the power supply input port and outputs the external power supply to the second connection port of the charging seat device used as the second-stage charging seat; and

wherein, when the charging seat device is used as the second stage charging seat: the second connection port of the charging seat device receives the external power supply through the first connection port of the charging seat device as the first-stage charging seat; the second anti-reverse-flow switch circuit of the charging seat device generates a second power supply signal according to the external power supply received by the second connection port and provides a second power supply path from the second connection port to the power supply output contact; the power output contact of the charging seat device receives the second power signal through the second power supply path and outputs the second power signal; the power input port of the charging seat device is idle and does not receive the external power; and the first connection port of the charging-stand device does not receive the external power supply and the external power supply because the power input port does not receive the external power supply, so that the first connection port of the charging-stand device cannot provide the external power supply to the second connection port of the charging-stand device serving as a third-stage charging stand when the first connection port of the charging-stand device is connected to the second connection port of the charging-stand device serving as the third-stage charging stand, thereby avoiding the improper coupling of users with an excessive number of the charging-stand devices.

2. The charging-stand device of claim 1, further comprising:

a charging circuit coupled to the power output contact for receiving the first power signal or the second power signal and providing a charging power according to the first power signal or the second power signal; and

and the connector is coupled between the charging circuit and a load and outputs the charging power supply to the load.

3. The charging-stand device of claim 1, further comprising:

a power converter coupled to the power input port of the charging device as the first stage charging dock for inputting the external power.

4. The charging-stand device of claim 1, wherein the first connection port comprises a first connection point and a second connection point, the second connection port comprises a third connection point and a fourth connection point, the first connection point is coupled to the power input port, the second connection point is coupled to the third connection point, the second anti-backflow switch circuit is coupled to the third connection point of the second connection port, the charging-stand device further comprises:

a third anti-backflow switch circuit coupled between the fourth contact and the power output contact;

wherein, when the charging seat device is used as the first stage charging seat: the first connection port of the charging-stand device receives the external power input via the power input port with the first contact, and is connected to the third contact of the second connection port of the charging-stand device as the second-stage charging stand with the first contact, to output the external power to the third contact of the second connection port of the charging-stand device as the second-stage charging stand;

wherein, when the charging seat device is used as the second stage charging seat: the third contact of the second connection port of the charging seat device receives the external power supply through the first contact of the first connection port of the charging seat device as the first-stage charging seat; the second reverse-flow prevention switch circuit of the charging seat device generates the second power supply signal according to the external power supply received by the third joint of the second connecting port and provides the second power supply path from the third joint of the second connecting port to the power supply output joint; the fourth connection point of the second connection port of the charging stand apparatus is connected to the second connection point of the first connection port of the charging stand apparatus serving as the first-level charging stand, and the external power source is not received; the first contact of the first connection port of the charging dock device is connected to the third contact of the second connection port of the charging dock device used as the third stage charging dock, and the external power is not transmitted to the third contact of the second connection port of the charging dock device used as the third stage charging dock because the external power is not received; the second contact of the first connection port of the charging seat device is connected to the fourth contact of the second connection port of the charging seat device serving as the third-level charging seat, and the second contact of the first connection port of the charging seat device receives the external power supply through the third contact of the second connection port and outputs the external power supply to the fourth contact of the second connection port of the charging seat device serving as the third-level charging seat;

wherein, when this charging seat device uses as this third level charging seat: the fourth contact of the second connection port of the charging stand device receives the external power supply through the third contact of the first connection port of the charging stand device as the second-stage charging stand; the third-prevention reverse-flow switch circuit of the charging seat device generates a third power signal according to the external power received by the fourth contact of the second connection port and provides a third power supply path from the fourth contact of the second connection port to the power output contact; the power output contact of the charging stand device receives the third power signal through the third power supply path and outputs the third power signal; the power input port of the charging seat device is idle and does not receive the external power; and the first contact of the first connection port of the charging seat device does not receive the external power supply and also does not receive the external power supply because the power input port does not receive the external power supply, and the second contact of the first connection port of the charging seat device does not receive the external power supply and also does not receive the external power supply because the third contact of the second connection port does not receive the external power supply, so that the first connection port of the charging seat device cannot provide the external power supply to the second connection port of the charging seat device serving as a fourth-stage charging seat when being connected to the second connection port of the charging seat device serving as the fourth-stage charging seat, thereby avoiding the situation that a user is improperly coupled with an excessive number of the charging seat devices.

5. The charging-stand device of claim 1, wherein the first anti-reverse-flow switch circuit comprises:

a first transistor having a control terminal coupled to the power input port; and

a second transistor controlled by the first transistor to conduct when the first transistor is conducted to conduct the first power supply path between the power input port and the power output contact.

6. The charging-stand device of claim 5, wherein the second anti-reverse-flow switch circuit comprises:

a third transistor having another control terminal coupled to the second connection port; and

a fourth transistor controlled by the third transistor and turned on when the third transistor is turned on to turn on the second power supply path between the second connection port and the power output contact.

7. The charging-stand apparatus of claim 4, wherein the third backflow prevention switch circuit comprises:

a fifth transistor having a control terminal coupled to the fourth node; and

a sixth transistor controlled by the fifth transistor and turned on when the fifth transistor is turned on to turn on the fourth contact and the power output contact.

8. The charging-stand device of claim 1, wherein the first connection port is matched with the second connection port.

9. A charging architecture adapted to charge multiple loads, comprising:

a first charging device, comprising:

a first power input port for receiving an external power;

a first connection port coupled to the first power input port for receiving the external power through the first power input port and outputting the external power;

a second connection port which is in idle connection;

a first anti-reverse-flow switch circuit coupled to the first power input port for outputting a first power signal according to the external power;

a first power output contact coupled to the first reverse-flow prevention switch circuit, the first power output contact receiving the first power signal through the first reverse-flow prevention switch circuit and outputting the first power signal to a first load;

a second anti-reverse flow switch circuit coupled to the second connection port and the first power output contact, and not providing a power supply path from the second connection port to the first power output contact; and

a second charging dock device removably coupled to the first charging dock device, comprising:

a second power input port, which is connected in an idle mode and does not receive the external power;

a third connection port, coupled to the second power input port, and not receiving the external power because the second power input port does not receive the external power and also does not receive the external power, so that the third connection port of the second charging-stand device cannot provide the external power to a third charging stand when being connected to the third charging stand, thereby preventing a user from being improperly coupled with an excessive number of the charging-stand devices;

a fourth connection port removably coupled to the first connection port for receiving the external power outputted from the first connection port through the first connection port;

a second power output node coupled to a second load;

a third anti-backflow switch circuit coupled to the second power input port and the second power output contact, wherein the third anti-backflow switch circuit does not provide a power supply path from the second power input port to the second power output contact; and

a fourth anti-reverse-flow switch circuit coupled between the fourth connection port and the second power output contact for outputting a second power signal according to the external power;

the second power output contact receives the second power signal through the fourth reverse-flow prevention switch circuit and outputs the second power signal to the second load.

10. A charging architecture suitable for charging multiple loads according to claim 9, further comprising:

and the power converter is coupled to the first power input port and used for inputting the external power.

11. The charging architecture of claim 9, wherein the first charging device further comprises:

the first charging circuit is coupled with the first power output contact, receives the first power signal output by the first anti-reflux switch circuit through the first power output contact and provides a first charging power according to the first power signal; and

a first connector coupled between the first charging circuit and the first load for outputting the first charging power to the first load;

wherein the second charging device further comprises:

the second charging circuit is coupled with the second power output contact, receives the second power signal output by the fourth anti-reflux switch circuit through the second power output contact and provides a second charging power according to the second power signal; and

and the second connector is coupled between the second charging circuit and the second load and outputs the second charging power supply to the second load.

12. The charging architecture of claim 9, wherein the first connection port comprises a first contact and a second contact, the first contact is coupled to the first power input port to receive and output the external power to the fourth connection port; the second connection port comprises a third contact and a fourth contact, and the third contact is coupled with the second anti-reflux switch circuit and the second contact; and the first charging seat device also comprises a fifth anti-reverse flow switch circuit coupled between the fourth contact and the first power output contact.

13. The charging architecture of claim 12, wherein the fourth connection port comprises a fifth contact and a sixth contact, the fifth contact being removably coupled to the first contact for delivering the external power to the fourth anti-backflow switch circuit; the third connection port comprises a seventh connection point and an eighth connection point, the seventh connection point is coupled to the second power input port, the eighth connection point is coupled to the fifth connection point to receive the external power input through the fifth connection point of the fourth connection port and output the external power; the second charging seat device also comprises a sixth anti-reverse flow switch circuit coupled between the sixth contact and the second power output contact.

14. The charging architecture of claim 13, further comprising the third charging device removably coupled to the second charging device, wherein the third charging device comprises:

a third power input port, which is connected in an idle mode;

a fifth connection port including a ninth connection point and a tenth connection point, the ninth connection point being coupled to the third power input port;

a sixth connection port including an eleventh contact and a twelfth contact, the eleventh contact being removably coupled to the eighth contact for receiving the external power, the twelfth contact being coupled to the tenth contact;

a seventh anti-reverse current switch circuit coupled to the third power input port;

an eighth anti-reverse-flow switch circuit coupled to the twelfth contact;

a ninth anti-reverse-flow switch circuit coupled to the eleventh node for outputting a third power signal according to the external power; and

and a third power output contact coupled to the seventh anti-backflow switch circuit, the eighth anti-backflow switch circuit and the ninth anti-backflow switch circuit, the third power output contact receiving the third power signal through the ninth anti-backflow switch circuit and outputting the third power signal.