Charging and discharging integrated circuit and charging and discharging gun

Abstract

The invention discloses a charging and discharging integrated circuit and a charging and discharging gun, and relates to the technical field of new energy automobile charging. Comprising a CC charging and discharging conversion unit, a relay and a control unit, the CC charging and discharging conversion unit is electrically connected with the control unit, the control unit is electrically connected with an isolation power supply and a discharging socket, and the isolation power supply is electrically connected with a power strip unit through the relay. Through the components such as the CC charging and discharging conversion unit, the isolation power supply, the relay and the control unit, the charging and discharging modes can be intelligently detected and switched, the current state can be judged according to the change of the resistance value, and the action of the relay is automatically controlled, so that the smooth conversion of the charging and discharging modes is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicle charging, and in particular to a charging and discharging integrated circuit and a charging and discharging gun. Background Art

[0002] With the rapid growth of the electric vehicle (EV) and plug-in hybrid electric vehicle (PHEV) markets, the demand for charging infrastructure is increasing. Traditional electric vehicle charging equipment usually only supports one-way energy transmission, that is, it can only supply power from the power grid to the vehicle battery, but cannot achieve reverse energy flow. However, with the increasing popularity of renewable energy, home users are increasingly inclined to use clean energy generated by their own homes, such as solar or wind energy, to charge electric vehicles, and hope to store excess energy, or feed energy back to the power grid or directly use it for home electricity when needed.

[0003] The Chinese invention patent with publication number CN11533208A discloses a multifunctional integrated gun for realizing charging and discharging, which relates to the field of new energy vehicle charging, including a charging and discharging gun head module, a first charging plug module, a second charging plug module and a household socket module, and power transmission is performed between each module through a three-phase power line. The charging and discharging gun head module is connected to one of the first charging plug module, the second charging plug module and the household socket module. The charging and discharging gun head module includes a control confirmation line, a connection confirmation line, a main control chip and a charging and discharging signal detection line, and the main control chip is connected to the control confirmation line, the connection confirmation line and the charging and discharging signal detection line. The first charging plug module includes a signal docking socket, the second charging plug module includes a first resistor, and the household socket module includes a second resistor. Different signals are input through the signal docking socket, the first resistor and the second resistor, thereby realizing charging and discharging control, and facilitating mode switching. Although the multifunctional integrated gun can realize charging and discharging in one, it needs to be identified according to different types of plugs in the actual use process, and each plug corresponds to a different resistance value. Once the resistance value does not meet the standard or the user makes a wrong operation, it will cause the system to fail to correctly identify the state. Summary of the invention

[0004] The object of the present invention is to provide a charging and discharging integrated circuit and a charging and discharging gun to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: a charging and discharging integrated circuit, comprising a CC charging and discharging conversion unit, a relay and a control unit, wherein the CC charging and discharging conversion unit is electrically connected to the control unit, the control unit is electrically connected to an isolated power supply and a discharge socket, and the isolated power supply is electrically connected to a socket unit through the relay; The socket unit includes a plurality of power sockets, a discharge socket and a household three-plug, the plurality of power sockets are connected in parallel, and the discharge socket and the household three-plug are directly electrically connected; The CC charge-discharge conversion unit includes an RC1 resistor, an R3 resistor, an RC2 resistor and an R4 resistor, wherein the RC1 resistor is electrically connected to the R3 resistor, and the RC2 resistor is electrically connected to the R4 resistor. Meanwhile, the series circuit between the RC1 resistor and the R3 resistor and the series circuit between the RC2 resistor and the R4 resistor are connected in parallel.

[0006] Furthermore, the relay includes a discharge relay and a charging relay, both of which are electrically connected to an isolated power supply, and the discharge relay is electrically connected to the charging relay, while the discharge relay is electrically connected to a power socket and the charging relay is electrically connected to a household three-plug.

[0007] Furthermore, the isolated power supply includes an isolated power supply 1 and an isolated power supply 2, and the isolated power supply 1 and the isolated power supply 2 are both electrically connected to the control unit, and the isolated power supply 1 is electrically connected to the discharge relay, and the isolated power supply 2 is electrically connected to the charging relay.

[0008] Furthermore, the control unit is electrically connected to a discharge socket, and the power socket is electrically connected to a household three-plug PE port.

[0009] A charging and discharging gun comprises a charging gun, a control box and a 10A three-plug. The control box is provided with the above-mentioned integrated charging and discharging circuit inside. The control box comprises a socket power input module and a socket power output module. The socket power input module is electrically connected to the 10A three-plug, and the socket power output module is electrically connected to the charging gun.

[0010] Furthermore, the L1-OUT port and N-OUT port of the charging gun are electrically connected to the socket outlet module through the extender, and the L1 port, N port and PE port of the 10A three-plug are electrically connected to the socket outlet module.

[0011] Furthermore, the PE port of the 10A three-plug is electrically connected to the PE port of the charging gun, and at the same time, the PE port of the charging gun is electrically connected to the CC charge and discharge conversion unit through a switch, and the CC charge and discharge conversion unit is electrically connected to the CC port of the charging gun.

[0012] Furthermore, when the 10A three-plug is electrically connected to the discharge socket inside the control box, the charging gun is in a discharge state; When the 10A three-plug is not electrically connected to the discharge socket inside the control box, the charging gun is in a power-on state.

[0013] Compared with the prior art, the present invention has the following beneficial effects: Firstly, the present invention can intelligently detect and switch the charge and discharge mode through components such as the CC charge and discharge conversion unit, the isolated power supply, the relay and the control unit, and can judge the current state according to the change of the resistance value and automatically control the action of the relay, thereby realizing the smooth conversion of the charge and discharge mode; Second, the present invention integrates the household three-plug and the socket strip unit, so that users can conveniently use standard household sockets for charging and discharging operations without the need to install additional dedicated charging facilities; Thirdly, the present invention integrates a charging and discharging integrated circuit inside the control box, and includes a socket power input module and a socket power output module, thereby simplifying the complexity of the system, facilitating maintenance and upgrading, and through the bidirectional charging and discharging function, users can manage energy more effectively; Fourthly, the present invention directly changes the resistance value through the electrical connection between the control box and the 10A three-plug, thereby reducing the errors caused by the resistance value not meeting the standard or the user's misoperation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A circuit diagram of the charging and discharging integrated circuit of the present invention; Figure 2 It is a system block diagram of the charging and discharging gun of the present invention. DETAILED DESCRIPTION

[0015] 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.

[0016] Furthermore, it should be understood that for the sake of ease of description, the sizes of the various components shown in the drawings are not drawn according to actual proportions. For example, the thickness or width of certain layers may be exaggerated relative to other layers.

[0017] It should be noted that like reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined or described in one drawing, it will not require further detailed discussion and description in the description of the subsequent drawings.

[0018] Although the existing multifunctional gun can realize charging and discharging in one, it is necessary to identify different types of plugs in the actual use process, and each plug corresponds to a different resistance value. Once the resistance value does not meet the standard or the user makes an error operation, the system will not be able to correctly identify the status. The technical solution of the present application can directly change the resistance value through the electrical connection relationship between the control box and the 10A three-plug, and can intelligently detect and switch the charging and discharging mode through components such as the CC charge and discharge conversion unit, the isolation power supply, the relay and the control unit, so that users can conveniently use standard household sockets for charging and discharging operations without the need to install additional dedicated charging facilities.

[0019] refer to Figure 1 This embodiment provides a charge-discharge integrated circuit, which includes a CC charge-discharge conversion unit, an isolated power supply, a relay, and a control unit. The CC charge-discharge conversion unit is electrically connected to the control unit, the control unit is electrically connected to the isolated power supply, and the isolated power supply is electrically connected to the socket unit through the relay.

[0020] In this embodiment, the CC charge-discharge conversion unit includes an RC1 resistor, an R3 resistor, an RC2 resistor, and an R4 resistor, the RC1 resistor is electrically connected to the R3 resistor, the RC2 resistor is electrically connected to the R4 resistor, and the series circuit between the RC1 resistor and the R3 resistor, and the series circuit between the RC2 resistor and the R4 resistor are connected in parallel. Further, the socket unit includes a plurality of power sockets, a discharge socket, and a household three-plug, the plurality of power sockets are connected in parallel, and the discharge socket and the household three-plug are directly electrically connected. It is worth noting that the control unit is electrically connected to the discharge socket, and the power socket is electrically connected to the household three-plug PE port.

[0021] Furthermore, the relay includes a discharge relay and a charging relay, both of which are electrically connected to an isolated power supply, and the discharge relay is electrically connected to the charging relay, while the discharge relay is electrically connected to a power socket and the charging relay is electrically connected to a household three-plug.

[0022] Furthermore, the isolated power supply includes an isolated power supply 1 and an isolated power supply 2, both of which are electrically connected to the control unit, and the isolated power supply 1 is electrically connected to the discharge relay, and the isolated power supply 2 is electrically connected to the charging relay.

[0023] In the specific implementation process, a resistor network is set in the CC charge-discharge conversion unit through the RC1 resistor, the R3 resistor, the RC2 resistor and the R4 resistor, and the charging connection state and the charging current are detected through the resistor network.

[0024] At the same time, in this embodiment, the charging current is turned on and off by the charging relay, and the control end of the relay is connected to the control unit (such as BF7106AM64LBTX), that is, the charging process, including the charging current, voltage and charging status, is monitored by the control unit, and the control unit is powered by the isolated power supply 1 and the isolated power supply 2.

[0025] refer to Figure 2 This embodiment also provides a charging and discharging gun, which includes a charging gun, a control box and a 10A three-plug. The control box is provided with a charging and discharging integrated circuit in the above embodiment, and the control box includes a socket power input module and a socket power output module, wherein the socket power input module is electrically connected to the 10A three-plug, and the socket power output module is electrically connected to the charging gun.

[0026] Furthermore, the L1-OUT port and N-OUT port of the charging gun are electrically connected to the plug-in power module through the extender, and the L1 port, N port and PE port of the 10A three-plug are electrically connected to the plug-in power module. At the same time, the PE port of the 10A three-plug is electrically connected to the PE port of the charging gun, and the PE port of the charging gun is electrically connected to the CC charge-discharge conversion unit through the switch, and the CC charge-discharge conversion unit is electrically connected to the CC port of the charging gun.

[0027] In the specific implementation process, when the 10A three-plug is electrically connected to the discharge socket inside the control box, the charging gun is in a discharge state, that is, it can power the device connected to the charging gun. In other words, the external power supply is used as the power supply point to power the connected device.

[0028] Furthermore, when the 10A three-plug is not electrically connected to the discharge socket inside the control box, the charging gun is in a power-on state, that is, the device connected to the charging gun is used as the power source to power the device connected to 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 circuit, characterized in that: It includes a CC charge-discharge conversion unit, a relay and a control unit, wherein the CC charge-discharge conversion unit is electrically connected to the control unit, the control unit is electrically connected to an isolated power supply and a discharge socket, and the isolated power supply is electrically connected to the socket unit through the relay; The socket unit includes a plurality of power sockets, a discharge socket and a household three-plug, the plurality of power sockets are connected in parallel, and the discharge socket and the household three-plug are directly electrically connected; The CC charge-discharge conversion unit includes an RC1 resistor, an R3 resistor, an RC2 resistor and an R4 resistor, wherein the RC1 resistor is electrically connected to the R3 resistor, and the RC2 resistor is electrically connected to the R4 resistor. Meanwhile, the series circuit between the RC1 resistor and the R3 resistor and the series circuit between the RC2 resistor and the R4 resistor are connected in parallel.

2. A charging and discharging integrated circuit according to claim 1, characterized in that: The relay comprises a discharge relay and a charging relay, both of which are electrically connected to an isolated power supply, and the discharge relay is electrically connected to the charging relay, while the discharge relay is electrically connected to a power socket and the charging relay is electrically connected to a household three-plug.

3. A charging and discharging integrated circuit according to claim 1 or 2, characterized in that: The isolated power supply includes an isolated power supply 1 and an isolated power supply 2, and the isolated power supply 1 and the isolated power supply 2 are both electrically connected to a control unit. Meanwhile, the isolated power supply 1 is electrically connected to a discharge relay, and the isolated power supply 2 is electrically connected to a charging relay.

4. The charging and discharging integrated circuit according to claim 1, characterized in that: The control unit is electrically connected to the discharge socket, and the power socket is electrically connected to a household three-plug PE port.

5. A charging and discharging gun, characterized in that: It includes a charging gun, a control box and a 10A three-plug. The control box is provided with an integrated charging and discharging circuit as described in any one of claims 1-4. At the same time, the control box includes a socket strip power input module and a socket strip power output module. The socket strip power input module is electrically connected to the 10A three-plug, and the socket strip power output module is electrically connected to the charging gun.

6. A charge-discharge gun according to claim 5, characterized in that: The L1-OUT port and N-OUT port of the charging gun are electrically connected to the socket outlet module through the extender, and the L1 port, N port and PE port of the 10A three-plug are electrically connected to the socket outlet module.

7. A charge-discharge gun according to claim 6, characterized in that: The PE port of the 10A three-plug is electrically connected to the PE port of the charging gun, and at the same time, the PE port of the charging gun is electrically connected to the CC charge and discharge conversion unit through a switch, and the CC charge and discharge conversion unit is electrically connected to the CC port of the charging gun.

8. A charge-discharge gun according to claim 5, characterized in that: When the 10A three-plug is electrically connected to the discharge socket inside the control box, the charging gun is in a discharge state; When the 10A three-plug is not electrically connected to the discharge socket inside the control box, the charging gun is in a power-on state.

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