Charging device, charging system, and charging control method

Abstract

The charging device comprises a first receiving part and a main body. The first receiving part comprises a first plug-in part and an alternating current connection assembly, the first plug-in part is connected with the alternating current connection assembly, and the alternating current connection assembly is used for plug-in connection with different alternating current power sources or alternating current loads; the main body comprises a power conversion assembly, a first controller, a second plug-in part and a charging gun, the second plug-in part is used for plug-in connection with the first plug-in part or plug-in connection with a third plug-in part, the second receiving part comprises the third plug-in part, and the third plug-in part is used for fixed connection with a power grid; and the first controller is used for, when the second plug-in part is plugged in the first plug-in part or the third plug-in part, controlling the power conversion assembly to obtain electric energy through the first plug-in part or the third plug-in part, and charging an electric device through the charging gun after the obtained electric energy is converted.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicle charging, in particular to a charging device, a charging system and a charging control method. BACKGROUND

[0002] With the development of new energy technology, new energy vehicles have been increasingly widely concerned. The new energy vehicle is provided with a power battery, which can receive and store the electric energy provided by a charging pile, and release the stored electric energy during the driving of the new energy vehicle, so as to drive the new energy vehicle to drive.

[0003] At present, new energy vehicles mostly use alternating current charging piles for charging, and vehicle-mounted chargers need to be configured in new energy vehicles. The vehicle-mounted charger can convert the alternating current voltage output by the alternating current charging pile into the direct current charging voltage of the power battery, thereby realizing the charging function. In actual use, the power of the vehicle-mounted charger is low, and in order to improve the charging speed of the electric vehicle, more and more electric vehicles use direct current charging mode. At present, the direct current charging device of the new energy vehicle mainly includes three types, which are fixed direct current charging pile, portable small charger and handheld direct current charger. The above several direct current charging devices are connected with alternating current power supply through different charging interfaces and obtain electric energy, which can only meet the charging demand in specific scene. A single charging device cannot meet the charging demand in multiple scenes, and the new energy vehicle faces the problem of difficult charging, which is not conducive to improving user experience.

[0004] Therefore, the current charging scheme for new energy vehicles needs further research. SUMMARY

[0005] The present application provides a charging device, a charging system and a charging control method, which are used to meet the charging demand of new energy vehicles in different scenes on the basis of improving the charging speed of new energy vehicles.

[0006] In a first aspect, the present application provides a charging device, which is applied to transmit charging electric energy between an electric vehicle and different AC power sources, or between the electric vehicle and an AC load, so as to realize charging requirements in different scenarios. The charging device at least comprises a first receiving part and a main body. The first receiving part comprises a first plug-in part and an AC connection assembly, the first plug-in part is connected with the AC connection assembly, and the AC connection assembly is used for plug-in connection with different AC power sources or AC loads; the main body comprises a power conversion assembly, a first controller, a second plug-in part and a charging gun, the second plug-in part is plug-in connected with the first plug-in part, or is used for plug-in connection with a third plug-in part, the second receiving part comprises the third plug-in part, and the third plug-in part is used for fixed connection with a power grid; the first controller is used for, when the second plug-in part is plugged in with the first plug-in part or the third plug-in part, controlling the power conversion assembly to obtain electric energy through the first plug-in part or the third plug-in part, and charging an electric device through the charging gun after converting the obtained electric energy.

[0007] It can be seen that, in the charging device, the third plug-in part in the second receiving part is fixedly connected with the power grid, when the second plug-in part on the main body is plugged in with the third plug-in part, the fixed DC charging requirement can be met. The AC connection assembly in the first receiving part can be plug-in connected with different AC power sources or AC loads, the AC power source can be a charging gun of an AC charging gun or an outlet, when the first plug-in part of the first receiving part is plugged in with the second plug-in part on the main body, the portable DC charging requirement can be met. In addition, the AC connection assembly can also be connected with another electric vehicle, so as to charge another electric vehicle or charge by using another electric vehicle, which increases the application scenarios of the charging device and improves the user experience.

[0008] In a possible design, the first controller is further used for, when the second plug-in part is plugged in with the first plug-in part or the third plug-in part, controlling the power conversion assembly to obtain electric energy through the charging gun, and supplying power to devices connected with the power grid or the AC connection assembly through the first plug-in part or the third plug-in part after converting the obtained electric energy.

[0009] By using the above scheme, the charging device can not only work in a charging mode for charging an electric device, but also can work in a discharging mode. When the second plug-in part on the main body is plugged in with the third plug-in part, the charging device can output electric energy on the electric device to the power grid. When the second plug-in part on the main body is plugged in with the first plug-in part, the charging device can output electric energy on the electric device to the AC load, and supply power to the AC load.

[0010] In a possible design, the alternating current connection assembly includes: the first connection assembly, the second connection assembly, or the third connection assembly. The first interface of the first connection assembly is a three-hole plug, and the second interface of the first connection assembly is configured to be connected with the first plug-in part. The first interface of the second connection assembly is a first socket, and the second interface of the second connection assembly is configured to be connected with the first plug-in part. The first interface of the third connection assembly is an alternating current charging port plug, and the second interface of the third connection assembly is configured to be connected with the first plug-in part.

[0011] With the above scheme, there can be one or more connection assemblies in the alternating current connection assembly, and the external interface types of each connection assembly are different, thereby realizing connection with different external devices and meeting the charging demand or discharging demand of the electric device in different scenarios.

[0012] In a possible design, when the alternating current power supply is an alternating current charging pile, the first interface of the third connection assembly is configured to be plugged in and unplugged with a charging gun of the alternating current charging pile, so that the charging device obtains electric energy through the charging gun of the alternating current charging pile and charges the electric device.

[0013] With the above scheme, when the electric device is in a scenario in which an alternating current charging pile is configured and the electric device has a charging demand, the first interface of the third connection assembly can be plugged in and unplugged with the charging gun of the alternating current charging pile. At this time, the charging device constitutes an electric energy transmission path between the electric device and the alternating current charging pile, and the charging device can obtain electric energy from the alternating current charging pile and charge the electric device.

[0014] In a possible design, when the alternating current power supply is another electric device, the first interface of the third connection assembly is configured to be plugged in and unplugged with an alternating current connection assembly of the other electric device, so that the charging device obtains electric energy through the other electric device and charges the electric device.

[0015] With the above scheme, when the electric device is in a scenario in which another electric device is configured and the electric device has a charging demand, the first interface of the third connection assembly can be plugged in and unplugged with the alternating current connection assembly of the other electric device. At this time, the charging device constitutes an electric energy transmission path between the electric device and the other electric device, and the charging device can obtain electric energy from the other electric device and charge the electric device. In addition, the charging device can also obtain electric energy from the electric device and supply power to the other electric device.

[0016] In a possible design, when the alternating current power supply is a second socket, the first interface of the first connection assembly is configured to be plugged in and unplugged with the second socket, and the second socket is configured to be connected with a power grid, so that the charging device obtains electric energy from the power grid through the second socket and charges the electric device.

[0017] With the above scheme, when the electric device is in a scene where a second socket for connecting with the power grid is configured, and the electric device has a charging demand, the first interface in the first connection assembly can be plugged into the second socket. At this time, the charging device constitutes an electric energy transmission path between the electric device and the power grid, and the charging device can obtain electric energy from the power grid and charge the electric device.

[0018] In a possible design, when the AC connection assembly is plugged into the AC load, the first interface of the second connection assembly is used to be plugged into the AC load, so that the charging device obtains electric energy from the electric device through the charging gun and supplies power to the AC load.

[0019] With the above scheme, when the electric device is in a scene where an AC load powered by an AC power supply is configured, and the electric device has sufficient power, the first interface of the second connection assembly can be plugged into the AC load. At this time, the charging device constitutes an electric energy transmission path between the electric device and the AC load, and the charging device can obtain electric energy from the electric device and supply power to the AC load.

[0020] In a possible design, the first controller is specifically configured to determine the conversion power of the power conversion assembly according to the connection state of the second connector with the first connector or the third connector, and control the working state of the power conversion assembly according to the conversion power.

[0021] With the above scheme, the first connector is plugged into the AC power supply or the AC load through the AC connection assembly, and the third connector is fixedly connected with the power grid. When the output power of the second connector plugged into the first connector is different from the output power when the second connector is plugged into the third connector, the conversion power of the corresponding power conversion assembly is also different. Therefore, before controlling the power conversion assembly to work, it is necessary to determine the device connected with the charging device.

[0022] In a possible design, the power conversion assembly includes an AC conversion circuit and a DC conversion circuit.

[0023] Specifically, the first end of the AC conversion circuit is connected with the second connector, the second end of the AC conversion circuit is connected with the third end of the DC conversion circuit, and the fourth end of the DC conversion circuit is connected with the charging gun.

[0024] The AC conversion circuit is configured to obtain AC power through the first end, convert the obtained AC power into DC power, and output the DC power through the second end; and the DC conversion circuit is configured to obtain the DC power output by the AC conversion circuit through the third end, convert the obtained DC power in voltage, and output the DC power through the charging gun connected with the fourth end.

[0025] The direct current conversion circuit is also configured to obtain direct current through the charging gun connected to the fourth end, convert the voltage of the obtained direct current, and output the converted direct current through the third end; and the alternating current conversion circuit is also configured to obtain the direct current output by the direct current conversion circuit through the second end, convert the obtained direct current into alternating current, and output the converted alternating current through the second plug-in part connected to the first end.

[0026] By plugging the second plug-in part and the third plug-in part, the electric device and the power grid can be electrically connected. By plugging the second plug-in part and the first plug-in part, and plugging the alternating current assembly and the external alternating current power supply or the external alternating current load, the electric device and the external alternating current power supply or the alternating current load can be electrically connected, and bidirectional transmission of electric energy between different devices can be realized.

[0027] In a possible design, the first controller is specifically configured to determine the connection state of the second plug-in part and the first plug-in part or the third plug-in part according to the electrical signal on the second plug-in part.

[0028] By using the above scheme, the devices connected to the first plug-in part and the third plug-in part are different, and thus the electrical signal on the second plug-in part is different when the second plug-in part is plugged with the first plug-in part or the third plug-in part. Therefore, the connection state of the body and the first receiving part or the second receiving part can be determined according to the electrical signal on the second plug-in part.

[0029] In a possible design, the first receiving part includes a first identification circuit, the second receiving part includes a second identification circuit, and the first controller is specifically configured to determine that the second plug-in part is plugged with the first plug-in part when a first identification signal of the first identification circuit is received, or determine that the second plug-in part is plugged with the third plug-in part when a second identification signal of the second identification circuit is received.

[0030] By using the above scheme, the devices connected to the first plug-in part and the third plug-in part are different, and thus the first identification circuit and the second identification circuit can be arranged in the first receiving part where the first plug-in part is located and the second receiving part where the second plug-in part is located, respectively, to accurately identify the device connected to the body. The first identification circuit and the second identification circuit can provide different identification signals. When the second plug-in part on the body is plugged with the first plug-in part or the third plug-in part, the first controller on the body can determine the electrical connection state of the body and the first receiving part or the second receiving part according to the received identification signal.

[0031] In a possible design, the first controller is specifically configured to determine the device connected to the alternating current connection assembly when the second plug-in part is plugged with the first plug-in part, and control the working state of the power conversion assembly according to the device connected to the alternating current connection assembly.

[0032] With the above scheme, since the AC connection component can be plugged with different AC power or AC load, when the device connected by the AC connection component is different, the conversion power of the power conversion component in the charging device is different. Therefore, when the second plug-in part is connected with the first plug-in part, the device connected by the AC connection component needs to be determined first, and then the conversion power of the power conversion component is determined, and then the working state of the power conversion component is determined.

[0033] In a possible design, the first receiving part further includes a second controller, and the second controller is configured to detect the device connected by the AC connection component and inform the first controller of the device connected by the AC connection component.

[0034] With the above scheme, the device connected by the AC connection component can be identified by the second controller, and the first controller can communicate with the second controller, so that the first controller can accurately determine the device connected by the second plug-in part.

[0035] In a possible design, the first receiving part further includes a locking component, and the locking component is configured to adjust the locking state according to the power of the device connected by the AC connection component when it is detected that the AC connection component is plugged with the AC power or the AC load.

[0036] With the above scheme, the locking component is arranged in the AC connection component, and the locking component can control the electrical connection and the communication connection of the AC connection component with the AC power or the AC load. In order to prevent the electric shock or device damage accident caused by the person unplugging the device during the charging process, the locking component can be adjusted to protect.

[0037] In a possible design, the charging device further includes a second receiving part.

[0038] In a second aspect, the present application provides a charging system, which includes an electric device and a charging device. The charging device includes a main body and a first receiving part. The first receiving part includes a first plug-in part and an AC connection component, the first plug-in part is connected with the AC connection component, and the AC connection component is configured to be plugged with an AC power or an AC load. The main body includes a power conversion component, a first controller, a second plug-in part and a charging gun. The second plug-in part is configured to be plugged with the first plug-in part or a third plug-in part. The second receiving part includes the third plug-in part, and the third plug-in part is configured to be fixedly connected with a power grid.

[0039] Specifically, the charging device can be used to obtain electric energy from the device connected by the first receiving part or the second receiving part and charge the electric device when the second plug-in part is plugged with the first plug-in part or the third plug-in part.

[0040] With the charging system, the charging system can be connected with the power grid through the second receiving part to build a charging path between the power grid and the electric device. The charging system can be connected with different AC power sources through the first receiving part to build a charging path between the different AC power sources and the electric device, thereby meeting the power demand of the electric device in multiple scenarios.

[0041] In a possible design, the charging device is further configured to: when the second plug-in part is plugged with the first plug-in part or the third plug-in part, obtain power from the electric device and supply power to devices connected with the first receiving part or the second receiving part.

[0042] With the charging system, the charging system can not only work in a charging mode for charging the electric device, but also work in a discharging mode. The charging system can be connected with the power grid through the second receiving part and provide power on the electric device to the power grid. The charging system can also be connected with different AC loads through the first receiving part and supply power on the electric device to the different AC loads.

[0043] In a third aspect, the present application provides a charging control method applied to a charging device, the charging device comprising a main body and a first receiving part, the first receiving part comprising a first plug-in part and an AC connection assembly, the first plug-in part being connected with the AC connection assembly, the AC connection assembly being configured to be connected with an AC power source or an AC load, the main body comprising a power conversion assembly, a first controller, a second plug-in part and a charging gun, the second plug-in part being configured to be connected with the first plug-in part or a third plug-in part, the second receiving part comprising the third plug-in part and the third plug-in part being configured to be fixedly connected with a power grid, specifically, the method can be executed by the first controller in the charging device and specifically comprises the following steps:

[0044] detecting a connection state of the second plug-in part with the first plug-in part or the third plug-in part; when it is determined that the second plug-in part is plugged with the third plug-in part and the charging gun is plugged with a charging port of the electric device, detecting an output power of the third plug-in part and controlling an operating state of the power conversion assembly according to the output power of the third plug-in part; or when it is determined that the second plug-in part is plugged with the first plug-in part and the charging gun is plugged with the charging port of the electric device, detecting devices connected with the AC connection assembly and controlling the operating state of the power conversion assembly according to the devices connected with the AC connection assembly.

[0045] With the above scheme, in the charging device, the third plug-in part in the second receiving part is fixedly connected with the power grid, when the second plug-in part on the body is plugged with the third plug-in part, the fixed direct current charging demand can be met. The alternating current connection assembly in the first receiving part can be plugged with different alternating current power sources or alternating current loads, when the first plug-in part of the first receiving part is plugged with the second plug-in part on the body, the portable direct current charging demand can be met. Therefore, with the above charging mode, the charging demand of the electric device in multiple scenes can be met, and the user experience is improved.

[0046] In a possible design, the first receiving part includes a first identification circuit, and the second receiving part includes a second identification circuit. The connection state of the second plug-in part with the first plug-in part or the third plug-in part is detected by: when the first controller receives a first identification signal of the first identification circuit, it is determined that the second plug-in part is plugged with the first plug-in part; or when the first controller receives a second identification signal of the second identification circuit, it is determined that the second plug-in part is plugged with the third plug-in part.

[0047] With the above scheme, the first receiving part and the second receiving part are respectively provided with identification circuits, and the two identification circuits respectively provide different identification signals. When the second plug-in part is plugged with the first plug-in part or the third plug-in part, the first controller in the body can determine the connection state of the device according to the different identification signals received.

[0048] In a possible design, the device connected with the alternating current connection assembly is detected, and the working state of the power conversion assembly is controlled according to the device connected with the alternating current connection assembly. The detection includes: when it is detected that the alternating current connection assembly is plugged with the socket, it is determined that the charging device works in a portable charging mode, and the socket is used to be connected with the power grid. The charging power in the portable charging mode is detected, and the charging current is determined according to the charging power. The working state of the power conversion assembly is controlled according to the charging current.

[0049] With the above scheme, when the electric device is in a scene where the socket is configured and the electric device has a charging demand, the alternating current connection assembly in the charging device can be plugged with the socket, and the power on the power grid can be obtained through the socket. The charging power of the charging device is determined according to the current scene, so as to control the working current of the power conversion assembly.

[0050] In a possible design, the device connected with the alternating current connection assembly is detected, and the working state of the power conversion assembly is controlled according to the device connected with the alternating current connection assembly. The detection includes: when it is detected that the alternating current connection assembly is plugged with the socket, it is determined that the charging device works in a portable charging mode, and the socket is used to be connected with the power grid. The charging power in the portable charging mode is detected, and the charging current is determined according to the charging power. The working state of the power conversion assembly is controlled according to the charging current.

[0051] Using the above solution, when the electric device is in a scenario that includes an AC load powered by an AC power source and the electric device has sufficient power, the AC connection component in the charging device can connect to the AC load and obtain power from the electric device to supply power to the AC load.

[0052] In one possible design, detecting the devices connected to the AC connection component and controlling the operating state of the power conversion component based on the devices connected to the AC connection component includes: determining that the charging device is operating in vehicle-to-vehicle charging mode when it is detected that the AC connection component is plugged in or unplugged from the AC connection component of another electric device; determining the operating current based on the target power in the vehicle-to-vehicle charging mode; and determining the operating mode of the power conversion component based on the operating current.

[0053] Using the above solution, when the electric device is in a scenario that includes another electric device, the AC connection component can be plugged and unplugged into the AC connection component of the other electric device to achieve electrical connection between the two electric devices, and the power transfer between the two electric devices can be achieved through the charging device.

[0054] In one possible design, detecting the devices connected to the AC connection component and controlling the operating state of the power conversion component based on the devices connected to the AC connection component includes: determining that the charging device is operating in charging mode when the AC connection component is detected to be plugged into or unplugged from the charging gun of the AC charging pile; detecting the charging power of the AC charging pile and determining the charging current based on the charging power; and determining the operating mode of the power conversion component based on the charging current.

[0055] Using the above solution, when the electric device is located in a scenario that includes an AC charging pile and the electric device has a charging requirement, the AC connection component can be plugged into the charging gun of the AC charging pile. At this time, a charging path is formed between the AC charging pile and the electric device, and the charging device can obtain electrical energy from the AC charging pile and charge the electric device. Attached Figure Description

[0056] Figure 1 A schematic diagram of vehicle charging provided in this application embodiment. Figure One ;

[0057] Figure 2 A schematic diagram of vehicle charging provided in this application embodiment. Figure Two ;

[0058] Figure 3 This is a schematic diagram of the structure of a charging device provided in an embodiment of this application;

[0059] Figure 4 This is a schematic diagram of the structure of a power conversion component provided in an embodiment of this application;

[0060] Figure 5 A schematic diagram of the structure of a second receiving part provided in an embodiment of this application;

[0061] Figure 6 A schematic diagram of vehicle charging provided in this application embodiment. Figure Three ;

[0062] Figure 7 A schematic diagram of the structure of a first receiving part provided in an embodiment of this application;

[0063] Figure 8 This is a schematic diagram of the structure of a first connecting device provided in an embodiment of this application;

[0064] Figure 9 A schematic diagram of vehicle charging provided in this application embodiment. Figure Four ;

[0065] Figure 10 This is a schematic diagram of the structure of a second connecting device provided in an embodiment of this application;

[0066] Figure 11 A schematic diagram of vehicle charging provided in this application embodiment. Figure Five ;

[0067] Figure 12 This is a schematic diagram of the structure of a third connecting device provided in an embodiment of this application;

[0068] Figure 13 A schematic diagram of vehicle charging provided in this application embodiment. Figure Six ;

[0069] Figure 14 A schematic diagram of vehicle charging provided in this application embodiment. Figure Seven ;

[0070] Figure 15 This is a schematic diagram illustrating the interaction between a charging device and other devices, provided in an embodiment of this application.

[0071] Figure 16 A flowchart illustrating a charging control method provided in this application embodiment. Figure One ;

[0072] Figure 17 A flowchart illustrating a charging control method provided in this application embodiment. Figure Two . Detailed Implementation

[0073] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the embodiments of this application will be described in detail below with reference to the accompanying drawings. The terminology used in the implementation section of this application is only used to explain specific embodiments of this application and is not intended to limit this application. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0074] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0075] The following explanations of some terms used in the embodiments of this application are provided to facilitate understanding by those skilled in the art.

[0076] (1) In the embodiments of this application, the term "multiple" refers to two or more, and other quantifiers are similar.

[0077] (2) The switching transistors in this application embodiment can be one or more of various types of switching transistors, such as relays, metal oxide semiconductor field effect transistors (MOSFETs), bipolar junction transistors (BJTs), insulated gate bipolar transistors (IGBTs), and silicon carbide (SiC) transistors. These will not be listed individually in this application embodiment. The packaging of each switching transistor can be a single-transistor package or a multi-transistor package; this application embodiment does not impose any restrictions on this. Each switching transistor can include a first terminal, a second terminal, and a control terminal, wherein the control terminal is used to control the switching transistor to be turned on or off. When the switching transistor is turned on, current can be transmitted between the first terminal and the second terminal; when the switching transistor is turned off, current cannot be transmitted between the first terminal and the second terminal. Taking a MOSFET as an example, the control terminal of the switching transistor is the gate, the first terminal of the switching transistor can be the source, and the second terminal can be the drain, or the first terminal can be the drain and the second terminal can be the source.

[0078] (3) In the embodiments of this application, "connection" can be understood as an electrical connection. The connection between two electrical components can be a direct or indirect connection between the two electrical components. For example, the connection between A and B can be a direct connection between A and B, or an indirect connection between A and B through one or more other electrical components, such as the connection between A and B. Alternatively, it can be a direct connection between A and C, and a direct connection between C and B, with A and B connected through C. The "connection" in the embodiments of this application can also be understood as a wireless connection, that is, the connection between two electrical components can be an electromagnetic connection between the two electrical components.

[0079] (4) Direct Current (DC) and Alternating Current (AC). In this embodiment, DC refers to an electrical form in which electrical energy is conducted in a circuit along a constant direction. The direction of energy conduction is also called phase, and the phase of DC can be either positive or negative. The energy intensity of most DC is fixed, but in some special DC types (such as pulsed DC), the energy intensity changes over time. Energy intensity is also called current amplitude. Common DC power sources include dry cell batteries, storage batteries, or DC generators. In this embodiment, AC refers to an electrical form in which electrical energy is conducted in a circuit along a periodically changing direction. The energy intensity of most AC also changes periodically over time. The periodic change in the conduction direction of AC is defined by its frequency. The higher the frequency of AC, the faster the AC can change its conduction direction; the lower the frequency, the slower the AC can change its conduction direction. Common AC power sources include mains power, industrial and agricultural power, and residential power.

[0080] (5) Rectification and inversion. In the embodiments of this application, rectification refers to converting alternating current into direct current, and inversion refers to converting alternating current into direct current.

[0081] The solution disclosed in this application can be applied to electric devices that use batteries as a power source, and to control the charging of the batteries within the electric devices. These electric devices include, but are not limited to, vehicles, robots, industrial equipment, and smart factory equipment. The vehicles provided in the embodiments of this application can include one or more different types of transport vehicles or movable objects that operate or move on land (e.g., highways, roads, railways, etc.), water surface (e.g., waterways, rivers, oceans, etc.), or in space. For example, transport vehicles can include vehicles, bicycles, motorcycles, trains, subways, airplanes, ships, aircraft, or other types of transport vehicles or movable objects.

[0082] The following uses vehicles as an example of transportation means. The vehicles provided in the embodiments of this application can be pure electric vehicles (pure EV / battery EV), hybrid electric vehicles (HEV), range-extended electric vehicles (REEV), plug-in hybrid electric vehicles (PHEV), or other new energy vehicles (NEV).

[0083] To facilitate understanding of the charging device, charging system, and charging control method provided in the embodiments of this application, the application scenarios of the charging device will be introduced below.

[0084] In recent years, environmental pollution and energy shortages have accelerated the development and utilization of green and renewable energy. Developing new energy vehicles, represented by electric vehicles and hybrid vehicles, is a crucial measure for achieving energy conservation, emission reduction, and pollution control. Electric vehicles, by replacing internal combustion engines with electric motors, not only achieve zero emissions, low noise, and no pollution, but also significantly conserve dwindling petroleum resources. Hybrid vehicles, on the other hand, utilize both electric motors and internal combustion engines for power, combining the advantages of long driving range and high performance of engine-driven vehicles with the benefits of low noise and zero pollution from electric motors. With the increasing maturity and development of power battery technology, new energy vehicles are destined to become the main trend in the future development of the automotive industry.

[0085] Figure 1 This is a schematic diagram of a vehicle architecture. (Reference) Figure 1 As shown, the vehicle 10 can be a new energy vehicle. The vehicle 10 can include a power battery 11, a motor 12, and wheels 13. The power battery 11 can be a high-capacity, high-power storage battery. The power battery 11 can supply power to the motor 12 through a motor control unit (MCU). The motor 12 converts the electrical energy of the power battery 11 into mechanical energy, thereby driving the wheels 13 to rotate, thus enabling the vehicle 10 to move.

[0086] See Figure 1 As shown, the power battery 11 in vehicle 10 provides the power required for vehicle propulsion. To enhance the user experience, vehicle 10 is generally also equipped with entertainment and other functions, leading to a gradual increase in the power consumption of vehicle 10. With the increase in power battery capacity, the charging requirements for power battery 11 also gradually increase.

[0087] SeeFigure 1 As shown, Figure 1 A schematic diagram illustrating the charging principle of vehicle 10 is shown. (See also...) Figure 1 As shown, vehicle 10 can charge power battery 11 via charging pile 20. Charging pile 20 typically includes a power module 21 and a charging gun 22. One end of the power module 21 is connected to the power grid, and the other end is connected to the charging gun 22 via a cable. Currently, most charging piles 20 are DC charging piles, where the power module 21 converts AC power provided by the power grid into DC power. The operator can insert the charging gun 22 into the charging port of vehicle 10, connecting the charging gun 22 to the power battery 11 of vehicle 10, thus forming a charging circuit between the power module 21 and the power battery 11, allowing the power module 21 to charge the power battery 11 through the charging gun 22.

[0088] See Figure 2 As shown, Figure 1 The diagram shows another charging principle for vehicle 10. Vehicle 10 can charge power battery 11 via portable charger 30. Portable charger 30 typically includes power module 31, charging gun 32, and plug 33. One end of power module 31 is connected to plug 33 via a cable, and the other end is connected to charging gun 32 via a cable. A power strip is connected to the power grid. When plug 33 is plugged into the power strip, power module 31 can obtain AC power from the power grid and convert it into DC power. The operator can insert charging gun 32 into the charging port of vehicle 10, connecting charging gun 32 to power battery 11, thus forming a charging circuit between power module 31 and power battery 11, allowing power module 31 to charge power battery 11 via charging gun 32.

[0089] In practical applications, DC charging piles 20 are typically installed on walls or placed on the ground in fixed locations and are permanently connected to the power grid, making them difficult to disassemble. When vehicle 10 needs charging, users can only drive to a fixed location to charge, which is insufficient to meet users' needs for charging while out and about. Portable chargers 30, because they can be carried with vehicle 10, can meet the needs of users in most out-of-home scenarios. However, with both of these charging methods, a single charging device can only meet the charging needs in certain scenarios. Furthermore, in situations where there are no charging piles or power strips available, neither of these charging devices can meet the user's outdoor charging and power needs, thus reducing the user experience.

[0090] To address the aforementioned issues, this application provides a charging device, a charging system, and a charging method to meet the charging needs of electric devices in various scenarios and improve the user experience. The charging device will first be described below with reference to specific embodiments.

[0091] See Figure 3 As shown,Figure 3 This is a simplified structural diagram of the charging device provided in an embodiment of this application. Figure 3 As shown, the charging device 40 includes a first receiving part 41 and a main body 42.

[0092] Specifically, the first receiving part 41 includes a first plug-in part 411 and an AC connection component 412, with the first plug-in part 411 connected to the AC connection component 412. The main body 42 includes a power conversion component 421, a first controller 422, a second plug-in part 423, and a charging gun 424. The second plug-in part 423 can be plugged into and detached from the first plug-in part 411, or it can be plugged into and detached from the third plug-in part 431. The second receiving part 43 includes a third plug-in part 431, which is used for fixed connection to the power grid. The AC connection component 412 can be plugged into and detached from different AC power sources or AC loads.

[0093] See Figure 3 As shown, the first connector 411 is mounted on the first receiving part 41 and serves as the external interface of the first receiving part 41. The second connector 423 and the charging gun 424 are mounted on the main body 42 and serve as the external interface of the main body 42. The third connector 431 is mounted on the second receiving part 43 and serves as the external interface of the second receiving part 43. The first connector 411 and the second connector 423 can be used in pairs, and the third connector can be used in pairs with the second connector 423.

[0094] In one possible implementation, the charging device 40 also includes a second receiving part 43.

[0095] In practical applications, the third connector 431 on the second receiving part 43 is fixedly connected to the power grid, or fixedly connected to the power grid via a circuit breaker. The second receiving part 43 is generally installed on a wall in a fixed location or placed on the ground. When the second connector 423 on the main body 42 is plugged into the third connector 431 on the second receiving part 43, and the charging gun 424 on the main body 42 is plugged into the charging port of the electric device, the electric device and the power grid establish an electrical connection through the charging device 40. The first receiving part 43 can be connected to an external AC power source or an external AC load through the AC connection component 412. When the second connector 423 on the main body 42 is plugged into the first connector 411 on the first receiving part 41, and the charging gun 424 on the main body 42 is plugged into the charging port of the electric device, the electric device and the external AC power source establish an electrical connection through the charging device 40, or the electric device and the external AC load establish an electrical connection through the charging device 40. The external AC load can be, but is not limited to, an induction cooker, a rice cooker, a mobile phone, a vehicle, etc. External AC power sources can be, but are not limited to, sockets and AC charging stations.

[0096] In this application, electric equipment includes, but is not limited to, vehicles, robots, industrial equipment, and smart factory equipment. The charging process of an electric device will be explained below using a vehicle as an example.

[0097] Generally, the charging device 40 has two operating modes: charging mode and discharging mode. Specifically, when the second connector 423 is connected to the first connector 411 or the third connector 431, and the charging gun 424 is connected to the vehicle's charging port, in charging mode, the first controller 422 can control the power conversion component 421 to obtain AC power from the first connector 411 or the third connector 431, convert the obtained AC power into DC charging power for the vehicle's power battery, and charge the vehicle's power battery through the charging gun 424. In discharging mode, the first controller 422 can control the power conversion component 421 to obtain DC power from the vehicle's power battery through the charging gun 424, convert the obtained DC power into AC power, and then supply power to the grid or devices connected to the AC connection component 412 through the first connector 411 or the third connector 431.

[0098] Using the charging device 40 provided in this application embodiment, since the third plug-in portion 431 in the second receiving portion 43 is fixedly connected to the power grid and the second receiving portion 43 is installed in a fixed location, when the second plug-in portion 423 in the main body 42 is plugged into the third plug-in portion 431, the charging needs of the vehicle in a fixed location can be met. The AC connection component 412 in the first receiving portion 41 can be plugged into and plugged into an external power source or an external AC load, that is, the first receiving portion 41 and the main body 42 can be carried with the vehicle, thereby meeting the vehicle's charging needs when traveling. When there is no socket or power source such as the second receiving portion 43 in the area where the vehicle is located, the AC connection component 412 can be connected to another vehicle through another charging device 40. At this time, the other vehicle acts as a power source and charges the vehicle through the two charging devices. The AC connection component 412 can also be plugged into and plugged into an external AC load. At this time, the vehicle acts as a power source and supplies power to the external AC load. It can be seen that the charging device provided in this application embodiment can meet the charging or power needs of the vehicle in multiple scenarios and improve the user experience.

[0099] Next, we will further explain the charging and discharging modes of the charging device 40. Figure 4 A schematic diagram of the structure of a power conversion component 421 is shown as an example. See also Figure 4 As shown, the power conversion component 421 includes an AC conversion circuit 4211 and a DC conversion circuit 4212.

[0100] Specifically, the AC conversion circuit 4211 includes a first terminal and a second terminal, and the DC conversion circuit 4212 includes a third terminal and a fourth terminal. The first terminal of the AC conversion circuit 4211 is connected to the second plug-in portion 423, the second terminal of the AC conversion circuit 4211 is connected to the third terminal of the DC conversion circuit 4212, and the fourth terminal of the DC conversion circuit 4212 is connected to the charging gun 424.

[0101] See Figure 4 As shown, when the charging device 40 is operating in charging mode, the second connector 423 is connected to either the first connector 411 or the third connector 431, and the charging gun 424 is connected to the vehicle's charging port. At this time, the second connector 423 serves as the input terminal of the power conversion component 421, and the charging gun 424 serves as the output terminal of the power conversion component 421. The AC conversion circuit 4211 can obtain AC power from the second connector 423 through its first terminal, convert the obtained AC power into DC power, and output it to the third terminal of the DC conversion circuit 4212 through its second terminal. The DC conversion circuit 4212 obtains the DC power output from the AC conversion circuit 4211 through its third terminal, performs voltage conversion on the obtained DC power, and outputs the voltage-converted DC power to the vehicle through the charging gun 424 connected to its fourth terminal, thereby charging the vehicle's power battery.

[0102] See Figure 4 As shown, when the charging device 40 operates in discharge mode, the second connector 423 is connected to either the first connector 411 or the third connector 431, and the charging gun 424 is connected to the vehicle's charging port. At this time, the charging gun 424 serves as the input terminal of the power conversion component, and the second connector 423 serves as the output terminal of the power conversion component 421. The DC-DC converter 4212 can obtain the DC power stored in the vehicle's power battery through the charging gun 424 connected to the fourth terminal, perform voltage conversion on the obtained DC power, and output it to the second terminal of the AC-DC converter 4211 through the third terminal of the DC-DC converter 4212. The AC-DC converter 4212 is used to obtain the voltage-converted DC power output from the DC-DC converter 4212 through the second terminal, convert the obtained DC power into AC power, and output it to the power grid or devices connected to the AC connection component 412 through the second connector 423 connected to the first terminal.

[0103] Specifically, the effective value of the AC current on the second connector 423 is the same as the voltage amplitude of the vehicle's power battery. This means that when the charging device 40 is in charging mode, the second connector 423 is connected to the first connector 411 or the third connector 431, and the charging gun 424 is connected to the vehicle's charging port. The voltage amplitude of the AC current obtained by the second connector 423 through the first connector 411 or the third connector 431 is the same as the rated charging voltage of the vehicle's power battery. In this case, the power conversion component 421 only has a rectification function and does not have a voltage conversion function. That is, the DC-DC conversion circuit 4212 is only used for power transmission and does not perform voltage conversion processing. Specifically, this can also mean that when the charging device 40 is operating in discharge mode, the second connector 423 is connected to the first connector 411 or the third connector 431, and the charging gun 424 is connected to the vehicle's charging port. The rated voltage of the vehicle's power battery is the same as the operating voltage of the device connected to the first connector 411 or the third connector 431. In this case, the power conversion component 421 only has an inverter function and does not have a voltage conversion function. That is, the DC-DC conversion circuit 4212 is only used for power transmission and does not perform voltage conversion processing.

[0104] Specifically, the voltage amplitude of the AC current flowing through the AC conversion circuit 4211 differs from the voltage amplitude of the DC current flowing through the DC conversion circuit 4212. This means that when the charging device 40 is operating in charging mode, the second connector 423 is connected to the first connector 411 or the third connector 431, and the charging gun 424 is connected to the vehicle's charging port. The voltage amplitude of the AC current obtained by the second connector 423 through the first connector 411 or the third connector 431 differs from the rated charging voltage of the vehicle's power battery. In this case, the power conversion component 421 not only has a rectification function but also a voltage conversion function. That is, the AC conversion circuit 4211 performs rectification, and the DC conversion circuit 4212 performs voltage conversion. When the charging device 40 is operating in discharge mode, the second connector 423 is connected to the first connector 411 or the third connector 431, and the charging gun 424 is connected to the vehicle's charging port. The rated voltage of the vehicle's power battery differs from the operating voltage of the devices connected to the first connector 411 or the third connector 431. In this case, the power conversion component 421 not only has an inverter function but also a voltage conversion function. That is, the AC conversion circuit 4211 performs the inverter process, and the DC conversion circuit 4212 performs the voltage conversion process.

[0105] It should be understood that the description of the structure of the power conversion component 421 in this application is only illustrative. In actual use, the power conversion component 421 may also adopt other circuit structures, which will not be described in detail here.

[0106] In practice, the AC conversion circuit 4211 and the DC conversion circuit 4212 can be composed of components such as switching transistors, diodes, inductors, and capacitors. The operating states of the AC conversion circuit 4211 and the DC conversion circuit 4212 can be adjusted by regulating the operating states of these components (e.g., the switching transistors).

[0107] In this application, the first controller 422 can be connected to both the AC conversion circuit 4211 and the DC conversion circuit 4212, and can adjust the operating state of these circuits. Specifically, the first controller 422 can control the AC conversion circuit 4211 to convert the AC power received at its first terminal into AC power and output it to the DC conversion circuit 4212 through its second terminal. It can also control the DC conversion circuit 4212 to convert the DC power output from the AC conversion circuit 4211 into AC power and output it to the charging gun 424 through its fourth terminal, at which point the charging device 40 is in a charging state. The first controller 422 can also control the DC conversion circuit 4212 to convert the DC power received at its fourth terminal into AC power and output it to the AC conversion circuit 4211 through its third terminal. Furthermore, it can control the AC conversion circuit 4211 to convert the DC power output from the DC conversion circuit 4212 into AC power and output it through its first terminal, at which point the charging device 40 is in an inverter state.

[0108] Specifically, if the switching transistors in each circuit of the power conversion component 422 are MOSFETs, the first controller can be connected to the gate of the MOSFET, thereby controlling the switching of the MOSFET to make the charging device 40 work in a charging state or a discharging state; if the switching transistors in each circuit of the power conversion component 421 are BJTs, the first controller can be connected to the base of the BJT, thereby controlling the switching of the BJT to make the charging device 40 work in a charging state or a discharging state.

[0109] In specific implementations, the first controller 422 can be a general-purpose central processing unit (CPU), a general-purpose processor, a digital signal processing unit (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. The aforementioned processors can also be combinations that implement computational functions. For example, the first controller 422 may include one or more microprocessor combinations, a combination of a DSP and a microprocessor, etc.

[0110] In actual use, since the devices connected to the first connector 411 and the third connector 431 are different, the first controller 422 needs to determine the connection status between the second connector 423 and the first connector 411 or the third connector 431 before controlling the power conversion component 421 to work, so as to determine the conversion power of the power conversion component 421 and ensure that the output power of the power conversion component 421 can meet the power requirements of the devices connected to the charging device 40.

[0111] In one possible implementation, the first controller 422 is connected to the second connector 423, and the connection status between the second connector 423 and the third connector 431 can be determined by detecting the electrical signal of the second connector 423.

[0112] See one example. Figure 5 As shown, the second receiving part 43, where the third insertion part 431 is located, includes a second identification circuit. When the second insertion part 423 is inserted into the third insertion part 431, if the first controller 422 receives a second identification signal provided by the second identification circuit, it can determine that the second insertion part 423 and the third insertion part 431 are inserted. The second identification signal can be a resistance value.

[0113] In another example, the first controller 422 can determine the connection status between the second connector 423 and the third connector 431 by the voltage or power on the second connector 423.

[0114] In actual use, since the third connector 431 is fixedly connected to the power grid, when it is determined that the second connector 423 is connected to the third connector 431, the first controller 422 can directly detect the current on the second connector 423, thereby determining the input power of the power grid, and providing a suitable drive signal to the switching device in the power conversion component 421 based on the input power, thereby outputting the output power required by the charging device 40. At this time, a charging diagram of the vehicle can be seen... Figure 6 As shown.

[0115] In another possible implementation, the first controller 422 is connected to the second connector 423 and determines the connection status between the second connector 423 and the first connector 411 by detecting the electrical signal on the second connector 423.

[0116] See one example. Figure 7As shown, the first receiving portion 41, where the first insertion portion 411 is located, includes a first identification circuit. When the second insertion portion 423 is inserted into the first insertion portion 411, if the first controller 422 receives a first identification signal from the first identification circuit, it can determine that the second insertion portion 423 is inserted into the first insertion portion 411. The first identification signal can be a resistance value, and the resistance values ​​of the first identification signal in the first receiving portion 41 and the second identification signal in the second receiving portion 42 are different.

[0117] In another example, the first controller 422 can determine the connection status between the second connector 423 and the first connector 411 by the voltage or power on the second connector 423.

[0118] In practical applications, the AC connection component 412 connected to the first plug-in part 411 can be plugged and unplugged into different AC power supplies or AC loads, and different AC loads have different rated power. Therefore, when the first controller 422 determines that the second plug-in part 423 is plugged into the first plug-in part 411, it is necessary to further determine the connection device of the AC connection component 412 in order to determine the conversion power of the power conversion component 421.

[0119] Specifically, a second controller is provided in the first receiving part 41 where the first plug part 411 is located. The second controller is connected to the first plug part 411 and the AC connection component respectively. The second controller 413 is used to identify the device connected to the AC connection component, connects to the first controller 422 through the first plug part 411, and informs the first controller 422 of the identification result.

[0120] In actual use, the AC connection assembly 412 includes one or more connection components, each of which includes two interfaces connected by a cable. One interface of each connection component is connected to the first plug-in portion 411, and the other interface of each connection component is plugged into and plugged into different AC power sources or AC loads.

[0121] The following description uses the AC connection component 412, which includes a first connection component, a second connection component, and a third connection component, as an example.

[0122] Specifically, the first interface of the first connecting component is a three-prong plug, and the second interface of the first connecting component is used to connect to the first plug-in part; the first interface of the second connecting component is a first socket, and the second interface of the second connecting component is used to connect to the first plug-in part; the first interface of the third connecting component is an AC charging port plug, and the second interface of the third connecting component is used to connect to the first plug-in part.

[0123] In one possible implementation, see Figure 8As shown, the first connecting component includes a first interface and a second interface, which are connected by a cable. Specifically, the first interface is a 10 / 16A standard three-prong plug, serving as the external interface of the first connecting component, allowing an external AC power source to be plugged into it. The second interface is an AC charging port plug, which can be connected to the first plug-in part 411. The three prongs of the first interface are connected to the live wire (L), neutral wire (N), and ground wire (PE), respectively. The first receiving part 41 includes an interface corresponding to the second interface of the first connecting component, allowing the second interface to be plugged into and connected to the corresponding interface, and also connecting to the first plug-in part 411 through this interface.

[0124] In practical applications, when a user is driving, if a standard second socket with a voltage amplitude of 220V is provided in the location where the vehicle is located, the first interface of the first connecting component is used to connect to the second socket. The second socket can be connected to the power grid. In this case, the charging device 40 constitutes a power transmission path between the power grid and the vehicle. The charging device 40 can obtain the electrical energy required for vehicle charging from the second socket, convert the obtained electrical energy into charging energy for the vehicle, and charge the vehicle. A schematic diagram of the vehicle charging process can be found here. Figure 9 As shown.

[0125] In one possible implementation, see Figure 10 As shown, the second connection component includes a first interface and a second interface, which are connected by a cable. Specifically, the first interface is a standard first socket with a voltage amplitude of 220V. The first interface is the external interface of the second connection component, and an external AC load can be plugged into and unplugged into the first interface. The second interface is an AC charging port plug. The first receiving part 41 includes an interface corresponding to the second interface of the second connection component. The second interface can be plugged into and unplugged into the corresponding interface and is connected to the first plug-in part 411 through this interface. The first socket may include a three-prong socket, which is respectively connected to the live wire L, the neutral wire N, and the ground wire PE.

[0126] Figure 10 In the second connection assembly shown, the first socket only shows one three-hole socket. In actual use, the first socket can be equipped with one or more three-hole sockets, one or more two-hole sockets, and other sockets required for AC load power supply.

[0127] Specifically, when a user is driving, if the location includes an AC load that the user needs and the vehicle's battery has sufficient charge, the first interface of the second connection component is used to plug and unplug into the external AC load. At this time, the charging device 40 forms a power transmission path between the AC load and the vehicle. The vehicle's battery acts as a power source, and the charging device 40 can obtain electrical energy from the vehicle's battery, converting it into power for the AC load and supplying power to the external AC load, thereby meeting the user's device power needs. In this scenario, the charging device 40 implements vehicle-to-load (V2L) charging technology. A schematic diagram of the vehicle charging process can be found here. Figure 11 As shown.

[0128] In one possible implementation, see Figure 12 As shown, the third connection component includes a first interface and a second interface, which are connected by a cable. Specifically, the first interface is an AC charging port plug, serving as the external interface of the third connection component. An external AC load or external AC power supply can be plugged into and unplugged into the first interface. The second interface is also an AC charging port plug. The first receiving part 41 includes an interface corresponding to the second interface of the third connection component. The second interface can be plugged into and unplugged into this interface and connected to the first plug-in part 411 through this interface.

[0129] In one example, when an AC charging station is available at the vehicle's location and the vehicle requires charging, the first interface of the third connection component is used for plugging and unplugging with the charging gun of the AC charging station. At this time, the charging device 40 constitutes the power transmission path between the vehicle and the AC charging station. The charging device 40 can obtain the charging energy required for vehicle charging from the AC charging station and charge the vehicle. A schematic diagram of the vehicle charging process can be found here. Figure 13 As shown.

[0130] In another example, when another vehicle is present in the same location, the first interface of the third connection component can be plugged into and detached with the AC connection component of another electric device. This other electric device can be a charging device for another vehicle, allowing the two vehicles to connect via the two charging devices. In this case, the other vehicle can act as a power source, charging the vehicle through the two charging devices 40, or vice versa. This implements vehicle-to-vehicle (V2V) charging technology; a schematic diagram of vehicle charging can be found here. Figure 14 As shown.

[0131] Figures 8 to 14The three connection components of the AC connection component 412 in this application are shown. In specific implementation, the AC connection component 412 may include a first connection component, a second connection component, a third connection component, or any combination thereof.

[0132] In this application, only three connection components are shown in the AC connection component. In actual use, the number of AC connection components 412 is not limited. For example, the AC connection component may include only one connection component or two connection components, or it may include more than three connection components. Specifically, the number of connection components can be configured according to the application scenario of the vehicle, which will not be repeated here.

[0133] In practical applications, during the process of connecting the AC connection component 412 to an external AC power supply or an external AC load, in order to prevent personnel from accidentally unplugging the devices connected to the AC connection component 412, which could cause electric shock or damage to the devices, the first receiving part 41 where the AC connection component 412 is located is also provided with a locking component. This locking component can be installed in the AC connection component to control the connection between the AC connection component and the AC load or the AC connection component.

[0134] In one example, the locking component can be a mechanical locking component. When an external AC power source or external AC load is plugged into the AC connection component 412, the mechanical locking component is controlled to be in a locked state. When the vehicle is fully charged or the AC load connected to the AC connection component 412 is fully powered, the user can control the mechanical locking component to release the locked state and disconnect the AC connection component 412 from the external device.

[0135] In another example, the locking component is an electronic locking component, which can be connected to a second controller or a first controller. The first or second controller can control the state of the locking component based on the power of the device connected to the AC connection component 412 when an external AC power supply or external AC load is plugged into it.

[0136] In one possible implementation, the first or second controller sets the locking power of the electronic locking component. When the rated power of the external device connected to the AC connection component 412 is detected to be less than the locking power, the electronic locking component is controlled not to start working. When the rated power of the external device connected to the AC connection component 412 is detected to be equal to or higher than the locking power, the electronic locking component is controlled to start working.

[0137] In another possible implementation, when the rated power of the AC connection component 412 connection device does not match the rated power of the vehicle, the operating state of the electronic locking component can be controlled according to the user's selection.

[0138] The above describes the charging principle of the charging device 40 provided in this application embodiment. For implementation and use, please refer to... Figure 15 As shown, the charging device 40 can also have a communication function. The first controller 422 in the charging device 40 can communicate with the vehicle, electronic devices and servers, and control the working state of the charging device 40 according to the signals sent by the communication devices.

[0139] refer to Figure 16 As shown in the embodiments, this application also provides a charging control method, applied to a charging device and executed by a first controller in the charging device. The structure of the charging device can be referred to the description in the foregoing embodiments, and will not be repeated here. The charging control method may include the following steps:

[0140] Step S1601: Detect the connection status between the second connector and the first connector or the third connector.

[0141] In the above scheme, the first receiving part where the first plug-in part is located includes a first identification circuit, and the second receiving part where the third plug-in part is located includes a second identification circuit. The first identification circuit can provide a first identification signal, and the second identification circuit can provide a second identification signal. When the first controller receives the first identification signal from the first identification circuit, it determines that the second plug-in part is plugged into the first plug-in part. When the first controller receives the second identification signal from the second identification circuit, it determines that the second plug-in part is plugged into the third plug-in part. The first identification signal and the second identification signal can be resistance values, and the resistance values ​​of the first identification signal and the second identification signal are different.

[0142] Step S1602: When it is determined that the second plug and the third plug are plugged in and the charging gun is plugged into the charging port of the electric device, the output power of the third plug is detected, and the working state of the power conversion component is controlled according to the output power of the third plug.

[0143] Step S1603: When it is determined that the second connector is plugged into the first connector and the charging gun is plugged into the charging port of the electric device, the device connected to the AC connection assembly is detected, and the operating state of the power conversion assembly is controlled according to the device connected to the AC connection assembly. The AC power source can be an AC charging station, a socket, or another electric device.

[0144] In one possible implementation, when the AC connection component is detected to be plugged into the socket, it is determined that the charging device is operating in portable charging mode, wherein the socket is connected to the power grid; the charging power in portable charging mode is detected, and the charging current is determined based on the charging power; the operating state of the power conversion component is controlled based on the charging current.

[0145] In one possible implementation, when the AC connection component is detected to be plugged into the AC load, it is determined that the charging device is operating in discharge mode; the discharge power in discharge mode is detected, and the discharge current is determined based on the discharge power; the operating state of the power conversion component is determined based on the discharge current.

[0146] In one possible implementation, when the AC connection component is detected to be plugged into or unplugged from the AC connection component of another electric device, it is determined that the charging device is operating in vehicle-to-vehicle charging mode; the operating current is determined based on the target power in vehicle-to-vehicle charging mode; and the operating mode of the power conversion component is determined based on the operating current.

[0147] In practical applications, the execution order of steps S1602 and S1603 is not important.

[0148] Based on the above description, such as Figure 17 As shown in the embodiments of this application, the charging control method may include the following specific steps:

[0149] Step S1701: The second insertion part on the main body is inserted into the first insertion part on the first receiving part or the third insertion part on the second receiving part, and step S1702 is executed.

[0150] Step S1702: Determine whether an identification signal has been received. If yes, proceed to step S1703; otherwise, return to step S1702.

[0151] Specifically, a first identification circuit is provided on the first receiving part, and a second identification circuit is provided on the second receiving part. The first identification circuit can provide a first identification signal, and the second identification circuit can provide a second identification signal. When the second plug-in part is plugged into the first plug-in part or the third plug-in part, the first controller on the main body can receive the first identification signal or the second identification signal.

[0152] Step S1703: Determine whether the received identification signal is the first identification signal. If yes, proceed to step S1704; otherwise, proceed to step S1707.

[0153] Step S1704: Determine that the second connector and the third connector are connected, detect the operating power of the charging device, and proceed to step 1705.

[0154] Specifically, when the second connector is plugged into the third connector, the electric device is connected to the power grid through the charging device. At this time, the first controller can calculate the power supply capacity of the power grid or the power supply capacity of the electric device by detecting the current and voltage received by the second connector.

[0155] Step S1705: Determine whether the charging gun on the main body is inserted into the charging port of the electric device. If yes, proceed to step S1706; otherwise, return to step S1705.

[0156] Step S1706: Based on the operating power, control the charging device to obtain electrical energy from the power grid and charge the electric device, or control the charging device to obtain electrical energy from the electric device and supply it to the power grid.

[0157] Step S1707: Determine whether the AC connection component is connected to the second socket. If yes, proceed to step S1708; otherwise, proceed to step S17011. The second socket is used for connection to the power grid and is a standard socket with a voltage amplitude of 220V.

[0158] Step S1708: Detect whether the charging gun on the main body is inserted into the charging port of the electric device. If yes, proceed to step S1709; otherwise, return to step S1708.

[0159] Step 1709: Determine that the charging device is operating in portable charging mode, detect the charging power in portable charging mode, determine the charging current based on the charging power, and proceed to step 1710. Portable charging mode refers to the portable charging mode where the charging device is plugged into and unplugged from the socket.

[0160] Specifically, the second socket can be, but is not limited to, a 10A standard socket and a 16A standard socket. When the second socket is a 10A standard socket, the charging power of its charging device can be 2.2KW. When the second socket is a 16A standard socket, the charging power of its charging device can be 3.5KW.

[0161] Step S1710: Based on the charging current, control the charging device to obtain electrical energy from the second socket and charge the electric device.

[0162] Step S1711: Determine whether the AC connection component is connected to an AC load. If yes, proceed to step S1712; otherwise, proceed to step S1715.

[0163] Step S1712: Detect whether the charging gun on the main body is inserted into the charging port of the electric device. If yes, proceed to step S1713; otherwise, return to step S1712.

[0164] Step S1713: Determine that the charging device is working in discharge mode, detect the discharge power in discharge mode, determine the discharge current based on the discharge power, and execute step S1714.

[0165] Specifically, the discharge power can be the rated power of the AC load, or less than the rated power of the AC load.

[0166] Step S1714: Based on the discharge current, control the charging device to obtain electrical energy from the electric device and supply power to the AC load.

[0167] Step S1715: Determine whether the AC connection component is connected to the charging gun of the AC charging pile. If yes, proceed to step S1716; otherwise, proceed to step S1719.

[0168] Step S1716: Detect whether the charging gun on the main body is inserted into the charging port of the electric device. If yes, proceed to step S1717; otherwise, return to step S1716.

[0169] Step S1717: Determine that the charging equipment is working in charging mode, detect the charging power of the AC charging pile, determine the charging current based on the charging power, and execute step S1718.

[0170] Step S1718: Based on the charging current, control the charging equipment to obtain electrical energy from the AC charging pile and charge the electric equipment.

[0171] Step S1719: Determine whether the AC connection component is connected to the AC connection component of another electric device. If yes, proceed to step S1720; otherwise, proceed to step S1723.

[0172] Step S1720: Detect whether the charging gun on the main body is inserted into the charging port of the electric device. If yes, proceed to step S1721; otherwise, return to step S1720.

[0173] Step S1721: Determine that the charging device is working in vehicle-to-vehicle charging mode, detect the target power in vehicle-to-vehicle charging mode, and determine the working current based on the target power, then execute step S1722.

[0174] Specifically, the electric device can be a vehicle, and the other electric device can be the charging device for another vehicle. The two vehicles can transfer electrical energy through the two charging devices, thereby enabling them to charge each other.

[0175] Step S1722: Based on the operating current, control the charging device to obtain electrical energy from another electric device and charge the electric device, or control the charging device to obtain electrical energy from the electric device and supply power to another electric device.

[0176] Step S1723: Control the charging device to enter a sleep state.

[0177] Figure 17The charging control methods shown only illustrate a few charging scenarios where the electric device is connected to the power grid, a second socket, an AC charging pile, an AC load, or another electric device. In actual use, the charging device can meet the charging needs of the electric device in other application scenarios by adding different types of connection components in the AC connection assembly. This application does not specifically limit the charging scenarios for the electric device.

[0178] Based on the same technical concept, this application embodiment also provides a charging system, which includes an electric device and the aforementioned charging device 40. The charging port of the electric device is plugged into and detached from the charging gun in the charging device 40. The charging device 40 can be used to obtain electrical energy from the device connected to the first or second receiving part and charge the electric device when the second receiving part is plugged into the first or third receiving part.

[0179] Optionally, the charging device 40 can also be used to obtain electrical energy from the electric device and supply power to the device connected to the first or second receiving part when the second receiving part is plugged into the first or third receiving part.

[0180] Based on the above embodiments, this application also provides a computer program that, when run on a computer, enables the computer to perform... Figures 16 to 17 The method provided in the illustrated embodiments.

[0181] Based on the above embodiments, this application also provides a computer-readable storage medium storing a computer program, which, when executed by a computer, causes the computer to perform... Figures 16 to 17 The method provided in the illustrated embodiments. The storage medium can be any available medium accessible to a computer. For example, but not limited to, a computer-readable medium can include RAM, read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), CD-ROM or other optical disk storage, magnetic disk storage media, or other magnetic storage devices, or any other medium capable of carrying or storing desired program code having an instruction or data structure form and accessible to a computer.

[0182] The technical solutions provided in this application can be implemented, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented using software, they can be implemented, in whole or in part, in the form of a computer program product. A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of this application is generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, an access network device, a terminal device, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that integrates one or more available media. The available media can be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital video discs (DVDs)), or semiconductor media, etc.

[0183] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A charging device, characterized in that, include: First receiving section and main body; The first receiving part includes a first plug-in part and an AC connection component. The first plug-in part is connected to the AC connection component, and the AC connection component is used for plugging and unplugging connection with an AC power supply or an AC load. The main body includes a power conversion component, a first controller, a second plug-in part, and a charging gun. The second plug-in part is used to plug and unplug into the first plug-in part, or to plug and unplug into the third plug-in part. The second receiving part includes the third plug-in part, and the third plug-in part is used to be fixedly connected to the power grid. The first controller is used to control the power conversion component to obtain electrical energy through the first plug or the third plug when the second plug is plugged into the first plug or the third plug, and to convert the obtained electrical energy to charge the electric device through the charging gun. The AC power source is an AC charging station, another electric device, or a second socket.

2. The charging device as described in claim 1, characterized in that, The first controller is further configured to: when the second plug-in portion is plugged into the first plug-in portion or the third plug-in portion, control the power conversion component to acquire electrical energy through the charging gun, convert the acquired electrical energy, and then supply power to the power grid or the device connected to the AC connection component through the first plug-in portion or the third plug-in portion.

3. The charging device as described in claim 2, characterized in that, The AC connection component includes: a first connection component, a second connection component, or a third connection component; The first interface of the first connecting component is a three-hole plug, and the second interface of the first connecting component is used to connect to the first plug part; The first interface of the second connecting component is a first socket, and the second interface of the second connecting component is used to connect to the first plug-in part; The first interface of the third connecting component is an AC charging port plug, and the second interface of the third connecting component is used to connect to the first plug part.

4. The charging device as described in claim 3, characterized in that, When the AC power source is the AC charging pile, the first interface of the third connection component is used to plug and unplug into the charging gun of the AC charging pile, so that the charging device can obtain electrical energy through the charging gun of the AC charging pile and charge the electric device.

5. The charging device as described in claim 3, characterized in that, When the AC power source is the other electric device, the first interface of the third connection component is used to plug and unplug into the AC connection component of the other electric device, so that the charging device can obtain electrical energy through the other electric device and charge the electric device.

6. The charging device as described in claim 3, characterized in that, When the AC power source is the second socket, the first interface of the first connection component is used to plug and unplug into the second socket, and the second socket is used to connect to the power grid so that the charging device can obtain electrical energy from the power grid through the second socket and charge the electric device.

7. The charging device as described in claim 3, characterized in that, When the AC connection component is plugged into and unplugged with the AC load, the first interface of the second connection component is used to plug into and unplug with the AC load so that the charging device can obtain electrical energy from the electric device through the charging gun and supply power to the AC load.

8. The charging device according to claim 2, characterized in that, The first controller is specifically used to: determine the conversion power of the power conversion component based on the connection status between the second plug and the first plug or the third plug, and control the operating status of the power conversion component based on the conversion power.

9. The charging device according to claim 8, characterized in that, The power conversion component includes an AC conversion circuit and a DC conversion circuit; The first end of the AC conversion circuit is connected to the second plug-in portion, and the second end of the AC conversion circuit is connected to the third end of the DC conversion circuit. The fourth terminal of the DC-DC conversion circuit is connected to the charging gun; The AC conversion circuit is used to obtain AC power through the first terminal, convert the obtained AC power into DC power, and output it through the second terminal; The DC-DC conversion circuit is used to obtain the DC power output from the AC-DC conversion circuit through the third terminal, perform voltage conversion on the obtained DC power, and output it through the charging gun connected to the fourth terminal; The DC-DC conversion circuit is also used to obtain DC power through the charging gun connected to the fourth terminal, perform voltage conversion on the obtained DC power, and output it through the third terminal; The AC conversion circuit is also used to acquire the DC power output by the DC conversion circuit through the second terminal, convert the acquired DC power into AC power, and output it through the second plug-in portion connected to the first terminal.

10. The charging device according to any one of claims 1 to 9, characterized in that, The first controller is specifically used to: determine the connection status between the second plug-in part and the first plug-in part or the third plug-in part based on the electrical signal of the second plug-in part.

11. The charging device as described in claim 10, characterized in that, The first receiving part includes a first identification circuit, the second receiving part includes a second identification circuit, and the first controller is specifically configured to: when receiving a first identification signal from the first identification circuit, determine that the second insertion part is inserted into the first insertion part; or When the second identification signal of the second identification circuit is received, it is determined that the second plug-in part is plugged into the third plug-in part.

12. The charging device according to any one of claims 1 to 9, characterized in that, The first controller is specifically used to: when the second plug-in part is plugged into the first plug-in part, determine the device connected to the AC connection component, and control the operating state of the power conversion component according to the device connected to the AC connection component.

13. The charging device according to any one of claims 1 to 9, characterized in that, The first receiving part further includes a second controller, which is used to detect the device connected to the AC connection component and inform the first controller of the device connected to the AC connection component.

14. The charging device according to any one of claims 1 to 9, characterized in that, The AC connection assembly also includes a locking component, which is used to adjust the locking state according to the power of the connected device when the AC connection assembly is detected to be plugged into an AC power source or an AC load.

15. The charging device according to any one of claims 1 to 9, characterized in that, The charging device also includes the second receiving part.

16. A charging system, characterized in that, This includes electric equipment and charging equipment; The charging device includes a main body and a first receiving part; The first receiving part includes a first plug-in part and an AC connection component. The first plug-in part is connected to the AC connection component, and the AC connection component is used for plugging and unplugging connection with an AC power supply or an AC load. The main body includes a power conversion component, a first controller, a second plug-in part, and a charging gun. The second plug-in part is used to plug and unplug into the first plug-in part, or to plug and unplug into the third plug-in part. The second receiving part includes the third plug-in part, and the third plug-in part is used to be fixedly connected to the power grid. The charging device is used to: obtain electrical energy from the device connected to the first receiving part or the second receiving part and charge the electric device when the second plug-in part is plugged into the first plug-in part or the third plug-in part; The AC power source is an AC charging station, another electric device, or a socket.

17. The charging system as described in claim 16, characterized in that, The charging device is also used to: obtain electrical energy from the electric device and supply power to the device connected to the first receiving part or the second receiving part when the second plug-in part is plugged into the first plug-in part or the third plug-in part.

18. A charging control method, characterized in that, An application is made in a charging device, the charging device comprising a main body and a first receiving part, the first receiving part comprising a first plug-in part and an AC connection component, the first plug-in part being connected to the AC connection component, the AC connection component being used for plugging and unplugging connection to an AC power source or an AC load, the main body comprising a power conversion component, a first controller, a second plug-in part and a charging gun, the second plug-in part being used for plugging and unplugging connection to the first plug-in part, or for plugging and unplugging connection to a third plug-in part, the second receiving part comprising the third plug-in part, and the third plug-in part being used for fixed connection to the power grid, the method comprising: Detect the connection status between the second connector and the first connector or the third connector; When it is determined that the second connector is connected to the third connector and the charging gun is connected to the charging port of the electric device, the output power of the third connector is detected, and the operating state of the power conversion component is controlled according to the output power of the third connector; or; When it is determined that the second plug is plugged into the first plug and the charging gun is plugged into the charging port of the electric device, the device connected to the AC connection assembly is detected, and the working state of the power conversion assembly is controlled according to the device connected to the AC connection assembly. The AC power source is an AC charging station, another electric device, or a socket.

19. The method as described in claim 18, characterized in that, The first receiving part includes a first identification circuit, and the second receiving part includes a second identification circuit. The step of detecting the connection status between the second insertion part and the first insertion part or the third insertion part includes: When the first controller receives the first identification signal from the first identification circuit, it determines that the second connector is connected to the first connector; or When the first controller receives the second identification signal from the second identification circuit, it determines that the second plug-in part is plugged into the third plug-in part.

20. The method as described in claim 18 or 19, characterized in that, The step of detecting the devices connected to the AC connection component and controlling the operating state of the power conversion component based on the devices connected to the AC connection component includes: When the AC connection component is detected to be plugged into the socket, it is determined that the charging device is operating in portable charging mode, and the socket is used to connect to the power grid. The charging power in the portable charging mode is detected, and the charging current is determined based on the charging power. The operating state of the power conversion component is controlled according to the charging current.

21. The method as described in claim 18 or 19, characterized in that, The step of detecting the devices connected to the AC connection component and controlling the operating state of the power conversion component based on the devices connected to the AC connection component includes: When the AC connection component is detected to be plugged into the AC load, it is determined that the charging device is operating in discharge mode; The discharge power in the discharge mode is detected, and the discharge current is determined based on the discharge power; The operating state of the power conversion component is determined based on the discharge current.

22. The method as described in claim 18 or 19, characterized in that, The step of detecting the devices connected to the AC connection component and controlling the operating state of the power conversion component based on the devices connected to the AC connection component includes: When it is detected that the AC connection component is plugged into or unplugged from the AC connection component of the other electric device, it is determined that the charging device is operating in vehicle-to-vehicle charging mode; The operating current is determined based on the target power under the vehicle-to-vehicle charging mode. The operating mode of the power conversion component is determined based on the operating current.

23. The method as described in claim 18 or 19, characterized in that, The step of detecting the devices connected to the AC connection component and controlling the operating state of the power conversion component based on the devices connected to the AC connection component includes: When it is detected that the AC connection component is plugged into and unplugged from the charging gun of the AC charging pile, it is determined that the charging device is working in charging mode. The charging power of the AC charging pile is detected, and the charging current is determined based on the charging power; The operating mode of the power conversion component is determined based on the charging current.

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