Charging and discharging integrated extension socket circuit and control box

Abstract

The invention discloses a charging and discharging integrated extension socket circuit and a control box, and relates to the technical field of power electronics. Comprising a gun head, a socket module, a conversion module and a control unit, the gun head is electrically connected with the socket module through the conversion module and the control unit, and meanwhile the conversion module is electrically connected with the control unit; the gun head is electrically connected with first external equipment; the socket module is electrically connected with an external power supply or second external equipment; the conversion module is used for converting the current transmission direction between the gun head and the socket module; and the control unit is used for determining the state relationship between the gun head and the socket module and determining the operation state of the conversion module according to the state relationship. According to the invention, bidirectional flow of current from the socket module to the gun head or from the gun head to the socket module can be realized, so that a user can select to charge equipment or use the equipment as power supply output according to actual needs, and the functionality of the equipment is enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of power electronics, and in particular to a charging and discharging integrated socket circuit and a control box. Background Art

[0002] As electric vehicles and renewable energy storage systems become more popular, users are increasingly demanding efficient, safe, and versatile power management devices. Traditional charging devices can usually only transmit power in one direction and lack the flexibility to cope with the complex needs of modern energy systems.

[0003] The Chinese invention patent with announcement number CN118971063A discloses an integrated charging and discharging system, including an energy storage unit, a power module unit and a load unit. One end of the power module unit is connected to the load device through a DC circuit, and the other end is connected to the load unit, the energy storage unit and the power grid through an AC circuit. In the grid-connected state, if the load device is in a charging state, the power grid charges the load device through the power module unit; if the load device is in a standby state, the power grid charges the energy storage unit; if the load device is in a discharging state, the load device discharges to the power grid through the power module unit; the invention supports bidirectional energy flow between the battery and the power grid, and realizes seamless switching of charging and discharging functions; integrates multiple functions into the same topology, simplifies the system structure and reduces costs; the charging module and the charging and discharging module can be replaced according to actual needs to meet the choices of different customers.

[0004] In actual operation, the above-mentioned and similar integrated charging and discharging systems have a complex system structure, which results in a large device size and requires more installation space. At the same time, the overall system is relatively fixed, which is not easy to move and carry, and thus has great limitations when used in different scenarios. Summary of the invention

[0005] The object of the present invention is to provide a charging and discharging integrated power strip circuit and control box to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a charging and discharging integrated power strip circuit, comprising a gun head, a socket module, a conversion module and a control unit, wherein the gun head is electrically connected to the socket module through the conversion module and the control unit, and the conversion module is electrically connected to the control unit; A gun head electrically connected to a first external device; A socket module electrically connected to an external power source or a second external device; A conversion module, which converts the current transmission direction between the gun head and the socket module; The control unit determines the state relationship between the gun head and the socket module, and determines the operating state of the conversion module according to the state relationship.

[0007] Furthermore, the gun head includes an L-OUT port, an N-OUT port, a PE port, a CC port and a CP port, the L-OUT port and the N-OUT port are electrically connected to the conversion module, the PE port of the gun head is electrically connected to the socket module, the CC port is electrically connected to the conversion module, and the CP port is electrically connected to the control unit.

[0008] Furthermore, the socket module includes a socket unit and three plugs, the socket unit is electrically connected to the three plugs, and the socket unit is electrically connected to the L-OUT port, the N-OUT port and the control unit through the conversion module, and the three plugs are electrically connected to the PE port of the gun head, the conversion module and the control unit.

[0009] Furthermore, the three plugs include an L1 port, an N1 port and a PE port, the L1 port and the N1 port are electrically connected to the conversion module, and the PE port of the three plugs is electrically connected to the PE port of the socket unit and the gun head; The socket strip unit includes a power socket 1, a power socket 2 and a power socket 3. The power socket 1, the power socket 2 and the power socket 3 are connected in parallel, and the power socket 3 is electrically connected to the PE port of the three plugs. At the same time, the power socket 1, the power socket 2 and the power socket 3 are all electrically connected to the conversion module.

[0010] Furthermore, the power socket 3 includes a judging discharge resistor, and the PE port of the three plugs and the PE port of the gun head are electrically connected to the control unit through the judging discharge resistor.

[0011] Furthermore, the conversion module includes a CC charge and discharge conversion unit and a switching unit, the CC charge and discharge conversion unit is electrically connected to the CC port through a switch S3, and the CC charge and discharge conversion unit is electrically connected to a control unit, and the control unit is electrically connected to the socket unit and the three plugs through the switching unit.

[0012] Furthermore, the CC charge and discharge conversion unit includes an RC / resistor, an R4 / resistor, an RC resistor and an R4 resistor, the RC / resistor and the R4 / resistor are electrically connected to each other, the RC resistor and the R4 resistor are electrically connected to each other, and the R4 resistor is electrically connected to the control unit, and the series circuit composed of the RC / resistor and the R4 / resistor and the series circuit composed of the RC resistor and the R4 resistor are connected in parallel to each other.

[0013] Furthermore, the switching unit includes a relay and an isolated power supply, and the isolated power supply is electrically connected to the R4 resistor, the discharge resistor and the CP port through the control unit, and the isolated power supply is electrically connected to the power socket 1, the power socket 2 and the three plugs through the relay.

[0014] A charging and discharging integrated control box, characterized in that the above-mentioned charging and discharging integrated socket strip circuit is arranged inside the control box.

[0015] Compared with the prior art, the present invention has the following beneficial effects: Firstly, the present invention can realize the bidirectional flow of current from the socket module to the gun head or from the gun head to the socket module through the conversion module and the control unit, so that the user can choose to charge the device or use the device as a power output according to actual needs, thereby enhancing the functionality of the device; Second, the present invention can intelligently identify whether the currently connected external device is a power source or a load through the control unit, and automatically switch the working state of the conversion module according to the identification result, thereby reducing human operation errors and improving the convenience of use; Thirdly, the socket module of the present invention includes multiple standard power sockets, supporting the access of various types of household appliances, and the gun head can be connected to specific external devices, thereby increasing the application scope of the power strip and meeting the use requirements in different scenarios; Fourthly, the present invention supplies power to the control unit and the relay through an isolated power supply, which not only avoids malfunctions that may be caused by electrical interference, but also ensures the stable operation of the control unit while ensuring the electrical isolation between the control system and the main circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a system block diagram of the power strip circuit of the present invention; Figure 2 The figure is a circuit diagram of the power strip circuit of the present invention. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] In the actual operation of the existing integrated charging and discharging system, due to its complex system structure, the device is large in size and requires more installation space. At the same time, the overall system is relatively fixed, not easy to move and carry, and has great limitations when used in different scenarios. The technical solution of the present application uses a control unit to intelligently identify whether the currently connected external device is a power source or a load, and automatically switches the working state of the conversion module according to the identification result, thereby realizing the two-way flow of current from the socket module to the gun head or from the gun head to the socket module, so that users can choose to charge the device or use the device as a power output according to actual use needs, thereby enhancing the functionality and convenience of the device.

[0019] refer to Figure 1 and Figure 2 , this embodiment provides a charging and discharging integrated power strip circuit, the power strip circuit includes a gun head, a socket module, a conversion module and a control unit, wherein the gun head is electrically connected to the socket module through the conversion module and the control unit, and the conversion module is electrically connected to the control unit. Specifically, the gun head is used to be electrically connected to a first external device, the socket module is used to be electrically connected to an external power source or a second external device, the conversion module is used to convert the current transmission direction between the gun head and the socket module, and the control unit is used to determine the state relationship between the gun head and the socket module, and determine the operating state of the conversion module according to the determined state relationship.

[0020] Further, when the gun head is electrically connected to the first external device, the socket module is electrically connected to the external power source. At this time, the first external device is powered by the external power source. Specifically, when the control unit determines that the first external device is powered by the external power source at this time, the control unit controls the conversion module to switch the transmission direction of the current from the socket module to the gun head.

[0021] Further, when the gun tip is electrically connected to the first external device, and the socket module is electrically connected to the second external device, discharge is performed through the first external device, and power is supplied to the second external device. Specifically, when the control unit determines that power is supplied to the second external device through the first external device, the control unit controls the conversion module to switch the transmission direction of the current from the gun tip to the socket module.

[0022] In this embodiment, the gun head includes an L-OUT port, an N-OUT port, a PE port, a CC port and a CP port. The socket module includes a socket unit and three plugs, the socket unit is electrically connected to the three plugs, and the socket unit includes a power socket 1, a power socket 2 and a power socket 3. The conversion module includes a CC charge and discharge conversion unit and a switching unit. Specifically, the L-OUT port of the gun head is electrically connected to the L1 port of the three plugs through the switching unit, the N-OUT port of the gun head is electrically connected to the N1 port of the three plugs through the switching unit, and the PE port of the gun head is electrically connected to the judgment discharge resistor in the power socket 3, the PE port of the three plugs and the control unit. The CC port of the gun head is electrically connected to the CC charge and discharge conversion unit, and the CC charge and discharge conversion unit is electrically connected to the switching unit through the control unit. The CP port of the gun head is electrically connected to the control unit.

[0023] Furthermore, power socket 1, power socket 2 and power socket 3 are connected in parallel, and power socket 3 is electrically connected to the PE ports of the three plugs, and power socket 1, power socket 2 and power socket 3 are all electrically connected to the switching unit. At the same time, the PE ports of the three plugs and the PE port of the gun head are all electrically connected to the control unit by judging the discharge resistance.

[0024] Further, the CC charge-discharge conversion unit is electrically connected to the CC port through the switch S3. Specifically, the CC charge-discharge conversion unit includes an RC / resistor, an R4 / resistor, an RC resistor and an R4 resistor. The RC / resistor and the R4 / resistor are electrically connected to each other, the RC resistor and the R4 resistor are electrically connected to each other, and the R4 resistor is electrically connected to the control unit. At the same time, the series circuit composed of the RC / resistor and the R4 / resistor, and the series circuit composed of the RC resistor and the R4 resistor are connected in parallel with each other.

[0025] Further, the switching unit includes a relay and an isolated power supply, the isolated power supply is electrically connected to the R4 resistor, the judgment discharge resistor and the CP port through the control unit, and the isolated power supply is electrically connected to the power socket 1, the power socket 2 and the three plugs through the relay. In this embodiment, the relay is provided with relay 1 and relay 2, and the isolated power supply is provided with isolated power supply 1 and isolated power supply 2.

[0026] Specifically, the N-OUT port of the gun head is electrically connected to the power socket 1, the power socket 2 and the power socket 3 through the relay 1, and the N-OUT port of the gun head is electrically connected to the L1 port of the three plugs through the relay 1 and the relay 2, and the N-OUT port of the gun head is also electrically connected to the isolated power supply 1. Further, the N-OUT port of the gun head is electrically connected to the N1 port of the three plugs through the relay 2, and the N-OUT port of the gun head is electrically connected to the isolated power supply 1 and the isolated power supply 2, and the isolated power supply 1 and the isolated power supply 2 are both electrically connected to the control unit. Further, the control unit electrically connects the PE port of the gun head and the PE port of the three plugs through the judgment discharge resistor in the power socket 3.

[0027] In this embodiment, the gun head is a connector, which is connected to the first external device (such as an electric car), the three plugs are household power supplies, power sockets 1, 2 and 3 are all standard power sockets, relay 1 is used to control the charging path, relay 2 is used to control the discharging path, the CC charge-discharge conversion unit determines the charge and discharge state of the entire circuit by detecting the CC signal, and controls relay 1 and relay 2 to switch accordingly, the isolated power supply 1 is used to provide the power required by the control unit (such as BF7106AM64LBTX) to ensure the stable operation of the control unit, and the isolated power supply 2 is used to provide the power required by relay 1 and relay 2 to ensure the reliable switching of relay 1 and relay 2. In other words, the flow direction of the power supply can be controlled by the control unit, relay 1 and relay 2, thereby realizing the charging and discharging functions.

[0028] This embodiment further provides a charging and discharging integrated control box, wherein a charging and discharging integrated socket strip circuit of the above embodiment is arranged inside the control box.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is limited by the attached embodiments and their equivalents.

Claims

1. A charging and discharging integrated power strip circuit, characterized in that: It includes a gun head, a socket module, a conversion module and a control unit, wherein the gun head is electrically connected to the socket module through the conversion module and the control unit, and the conversion module is electrically connected to the control unit; A gun head electrically connected to a first external device; A socket module electrically connected to an external power source or a second external device; A conversion module, which converts the current transmission direction between the gun head and the socket module; The control unit determines the state relationship between the gun head and the socket module, and determines the operating state of the conversion module according to the state relationship.

2. The charging and discharging integrated power strip circuit according to claim 1, characterized in that: The gun head includes an L-OUT port, an N-OUT port, a PE port, a CC port and a CP port. The L-OUT port and the N-OUT port are electrically connected to a conversion module. The PE port of the gun head is electrically connected to a socket module. The CC port is electrically connected to the conversion module. The CP port is electrically connected to a control unit.

3. A charging and discharging integrated power strip circuit according to claim 1 or 2, characterized in that: The socket module includes a socket unit and three plugs. The socket unit is electrically connected to the three plugs. At the same time, the socket unit is electrically connected to the L-OUT port, the N-OUT port and the control unit through the conversion module. The three plugs are electrically connected to the PE port of the gun head, the conversion module and the control unit.

4. The charging and discharging integrated power strip circuit according to claim 3, characterized in that: The three plugs include an L1 port, an N1 port and a PE port, the L1 port and the N1 port are electrically connected to the conversion module, and the PE port of the three plugs is electrically connected to the PE port of the socket unit and the gun head; The socket strip unit includes a power socket 1, a power socket 2 and a power socket 3. The power socket 1, the power socket 2 and the power socket 3 are connected in parallel, and the power socket 3 is electrically connected to the PE port of the three plugs. At the same time, the power socket 1, the power socket 2 and the power socket 3 are all electrically connected to the conversion module.

5. The charging and discharging integrated power strip circuit according to claim 4, characterized in that: The power socket 3 includes a judging discharge resistor, and the PE port of the three plugs and the PE port of the gun head are both electrically connected to the control unit through the judging discharge resistor.

6. The charging and discharging integrated power strip circuit according to claim 3, characterized in that: The conversion module includes a CC charge-discharge conversion unit and a switching unit. The CC charge-discharge conversion unit is electrically connected to the CC port through a switch S3. At the same time, the CC charge-discharge conversion unit is electrically connected to a control unit. The control unit is electrically connected to the socket unit and three plugs through the switching unit.

7. The charging and discharging integrated power strip circuit according to claim 6, characterized in that: The CC charge-discharge conversion unit includes an RC / resistor, an R4 / resistor, an RC resistor and an R4 resistor, the RC / resistor and the R4 / resistor are electrically connected to each other, the RC resistor and the R4 resistor are electrically connected to each other, and the R4 resistor is electrically connected to the control unit, and the series circuit composed of the RC / resistor and the R4 / resistor and the series circuit composed of the RC resistor and the R4 resistor are connected in parallel to each other.

8. The charging and discharging integrated power strip circuit according to claim 6, characterized in that: The switching unit includes a relay and an isolated power supply. The isolated power supply is electrically connected to the R4 resistor, the judgment discharge resistor and the CP port through the control unit. At the same time, the isolated power supply is electrically connected to the power socket 1, the power socket 2 and the three plugs through the relay.

9. A charging and discharging integrated control box, characterized in that: The control box is provided with a charging and discharging integrated socket circuit as described in any one of claims 1 to 8.

Images