Charging device

Abstract

The utility model discloses charging equipment. The charging equipment comprises a shell; the mounting part is configured to mount or accommodate the energy storage device; a pull rod assembly mounted to the housing; the wheels are installed on the shell, and when the pull rod assembly is pushed or pulled by a user, the wheels roll so that the user can move the charging equipment conveniently; when the charging equipment stands on the ground, the included angle formed by the plane formed by the pull rod assembly and the ground is smaller than or equal to 85 degrees. By adopting the scheme, the portable and movable charging equipment can be provided.

Description

Technical Field

[0001] The present application relates to a charging device. Background Art

[0002] A charging device is disclosed in the related art, which is a charger for charging multiple battery packs. The charger includes multiple battery interfaces, each of which is connected to a battery pack, so that multiple battery packs can be charged. As the total capacity of the battery pack increases, the weight becomes heavier, which brings inconvenience to the user.

[0003] This section provides background information related to the present application which is not necessarily prior art. Utility Model Content

[0004] One object of the present application is to solve or at least alleviate part or all of the above problems. To this end, one object of the present application is to provide a charging device that can be conveniently moved.

[0005] To achieve the above objectives, the present application adopts the following technical solution: a charging device, comprising: a shell; a mounting portion, configured to install or accommodate an energy storage device; a pull rod assembly, mounted to the shell; wheels, mounted to the shell, when the pull rod assembly is pushed or pulled by a user, the wheels roll to facilitate the user to move the charging device; when the charging device is placed stationary on the ground, the angle formed by the plane formed by the pull rod assembly and the ground is less than or equal to 85°.

[0006] In some embodiments, the pull rod assembly includes two parallel extension rods and a holding rod connecting the two extension rods.

[0007] In some embodiments, the extension pole is telescopic.

[0008] In some embodiments, the extension pole is collapsible.

[0009] In some embodiments, the charging device further includes a bottom support that is detachably mounted to the housing.

[0010] In some embodiments, the height of the bottom support is greater than the radius of the wheel.

[0011] In some embodiments, the bottom support member is detachably mounted on a first mounting portion of the shell, and the tie rod assembly is detachably mounted to a second mounting portion of the shell; the first mounting portion can also be used to install the tie rod assembly, and the second mounting portion can also be used to install the bottom support member.

[0012] In some embodiments, the bottom support is disposed on a side of the housing remote from the wheels.

[0013] In some embodiments, the wheels and the pull rod assembly are disposed on the same side of the charging device.

[0014] In some embodiments, the charging device includes a first charging device and a second charging device. When the first charging device and the second charging device are stacked, the pull rod assembly can be pushed and pulled by a user to facilitate moving the first charging device and the second charging device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional diagram of a charging system as a specific embodiment;

[0016] Figure 2 yes Figure 1 A three-dimensional diagram of an adapter and an energy storage device of a charging system;

[0017] Figure 3 yes Figure 1 A three-dimensional diagram of an adapter and an energy storage device of a charging system from another perspective;

[0018] Figure 4 yes Figure 1 A perspective view of an adapter of a charging system;

[0019] Figure 5 yes Figure 4 A three-dimensional diagram of the adapter after installing the energy storage device;

[0020] Figure 6 is a three-dimensional diagram of a charging system according to another embodiment of the present application;

[0021] Figure 7 yes Figure 1 Circuit diagram of the charging system in FIG.

[0022] Figure 8 It is another implementation of the adapter and energy storage device in the charging system;

[0023] Figure 9a yes Figure 8 A perspective view of the adapter in FIG.

[0024] Figure 9b yes Figure 8 A stereogram of the adapter from another perspective;

[0025] Fig.10 is a schematic diagram of another charging system as a specific embodiment;

[0026] Fig.11 is a perspective view of yet another charging system as a specific embodiment;

[0027] Fig.12 yes Fig.11 Circuit diagram of the charging system in FIG.

[0028] Fig.13 yes Fig.12 A circuit topology diagram of a DC-DC conversion circuit of a charging system;

[0029] Fig.14a yes Fig.13 Circuit diagram of the DC-DC converter circuit in mode A;

[0030] Fig.14b yes Fig.13 Circuit diagram of the DC-DC converter circuit in mode B;

[0031] Fig.14c yes Fig.13 Circuit diagram of the DC-DC converter circuit in mode C;

[0032] Fig.14d yes Fig.13 Circuit diagram of the DC-DC converter circuit in mode D;

[0033] Fig.15 yes Fig.13 The control timing diagram of the DC-DC conversion circuit and the waveform diagram of the inductor current and the output current;

[0034] Fig.16 is a schematic diagram of a bidirectional charging system as a specific embodiment;

[0035] Fig.17 yes Fig.16 A three-dimensional diagram of an electric energy conversion device as a specific embodiment;

[0036] Fig.18 yes Fig.17 A charging and discharging principle diagram of an outdoor walking device as a specific embodiment of the electric energy conversion device in;

[0037] Fig.19a This is a schematic diagram of the electrical connection of a bidirectional inverter module installed inside an outdoor walking device;

[0038] Fig.19b This is a schematic diagram of the electrical connection of a bidirectional inverter module installed outside an outdoor walking device;

[0039] Fig. 20 is a schematic diagram of a power supply system when the power conversion device is an AC-DC charger;

[0040] Fig.21 is a schematic diagram of a power supply system when the power conversion device is a DC-DC charger;

[0041] Fig. 22 It is the control principle diagram of the power supply system supplying power to the household power grid;

[0042] Fig.23is a schematic diagram of the communication connection between the remote device and the power supply system and the home power grid;

[0043] Fig.24 is a schematic diagram of a charging system according to an embodiment of the present application;

[0044] Fig.25 is a schematic diagram of identification of an electric energy receiving device in a charging system according to an embodiment of the present application;

[0045] Fig.26 is a stereogram of AC-DC charging in one embodiment of the present application;

[0046] Fig. 27 is an electrical schematic diagram of an electric energy conversion device in one embodiment of the present application;

[0047] Fig.28 is an electrical schematic diagram of a power receiving device in one embodiment of the present application;

[0048] Fig.29 is a communication principle diagram of a charging system in one embodiment of the present application;

[0049] Fig.30 is a schematic diagram of the adapter being installed on an electric travel device;

[0050] Fig.31 It is a three-dimensional diagram of the charging device;

[0051] Fig.32 yes Fig.25 A three-dimensional diagram of a fixing device and a locking device of a charging device;

[0052] Fig.33 yes Fig.26 A three-dimensional diagram of the fixing device in FIG.

[0053] Fig.34 yes Fig.25 A three-dimensional image of the charging device from another perspective;

[0054] Fig.35 It is a connection relationship diagram of multiple charging devices and cables;

[0055] Fig.36 is a perspective view of a charging device as yet another embodiment;

[0056] Fig.37 yes Fig.36 Schematic diagram of the installation relationship between the charging equipment and the energy storage device;

[0057] Fig.38 yes Fig.36 A schematic diagram of the location of the circuit board of the charging device;

[0058] Fig.39 yes Fig.36 A three-dimensional image of the charging device from another perspective;

[0059] Fig.40 is a schematic diagram of a plurality of charging devices stacked in a first manner;

[0060] Fig.41 is a schematic diagram of a plurality of charging devices being stacked in a second manner;

[0061] Fig.42 is a schematic diagram of a charging device having a pull rod and wheels;

[0062] Fig.43 is a schematic diagram of multiple stacked charging devices with pull rods and wheels;

[0063] Fig.44 It is a schematic diagram of multiple charging devices placed in a movable cabinet;

[0064] Fig.45 is a schematic diagram of a plurality of charging devices stacked in a third manner;

[0065] Fig.46 is a three-dimensional diagram of a charging device according to an embodiment of the present application;

[0066] Fig.47 yes Fig.47 A three-dimensional image of the charging device from another perspective;

[0067] Fig.48 yes Fig.47 A three-dimensional image of a charging device from another perspective;

[0068] Fig.49 is a three-dimensional diagram of a first charging device and a second charging device stacked together;

[0069] Fig.50 It is a stereoscopic image from another perspective after the first charging device and the second charging device are stacked. DETAILED DESCRIPTION

[0070] Before any embodiments of the application are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the above drawings.

[0071] In this application, the terms "comprises", "includes", "has" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device that includes the element.

[0072] In this application, the term "and / or" is a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects before and after are in an "and / or" relationship.

[0073] In the present application, the terms "connect", "combine", "couple", and "install" may refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, direct connection refers to two parts or components being connected together without the need for an intermediate piece, and indirect connection refers to two parts or components being connected to at least one intermediate piece respectively, and the two parts or components being connected via the intermediate piece. In addition, "connect" and "couple" are not limited to physical or mechanical connections or couplings, and may include electrical connections or couplings.

[0074] In the present application, it will be understood by those of ordinary skill in the art that relative terms (e.g., "about," "approximately," "substantially," etc.) used in conjunction with quantities or conditions include the values ​​and have the meaning indicated by the context. For example, the relative terms include at least the degree of error associated with the measurement of a specific value, the tolerances caused by manufacturing, assembly, and use associated with a specific value, and the like. Such terms should also be considered to disclose a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to plus or minus a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​that do not use relative terms should also be disclosed as specific values ​​with tolerances. In addition, "substantially" may refer to plus or minus a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) on the basis of the indicated angle when expressing a relative angular position relationship (e.g., substantially parallel, substantially perpendicular).

[0075] In this application, it will be understood by those skilled in the art that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0076] In the present application, the terms "upper", "lower", "left", "right", "front", "back" and other directional words are described based on the orientation and positional relationship shown in the accompanying drawings, and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element. It should also be understood that directional words such as upper side, lower side, left side, right side, front side, back side, etc. not only represent the positive orientation, but can also be understood as the lateral orientation. For example, the bottom can include directly below, lower left, lower right, lower front, and lower back, etc.

[0077] In this application, the terms "controller", "processor", "central processing unit", "CPU", and "MCU" are interchangeable. When a unit "controller", "processor", "central processing unit", "CPU", or "MCU" is used to perform a specific function, unless otherwise specified, these functions can be performed by a single unit or multiple units.

[0078] In the present application, the terms “device”, “module” or “unit” may be implemented in the form of hardware or software to achieve specific functions.

[0079] In this application, the terms "calculate", "judge", "control", "determine", "identify", etc. refer to the operations and processes of a computer system or similar electronic computing device (e.g., controller, processor, etc.).

[0080] The present application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0081] See also Figure 1 and Figure 2 As shown, the charging system 100 includes at least an adapter 10, an energy storage device 20, and a charger 30. The energy storage device 20 is detachably connected to the power tool or the adapter 10 to provide stored electric energy to the power tool, or to receive and store electric energy output from the charger 30. In some embodiments, the charging system 100 is used to provide energy to the power tool.

[0082] Specifically, the charger 30 includes a housing 34, an AC input power cord 31, an AC-DC conversion module (not shown in the figure) disposed in the housing 34, and an output port 33. Among them, the AC input power cord 31 is used to convert the connected mains power or other forms of AC power. The AC-DC conversion module is used to convert the connected mains power or other forms of AC power into DC power. In some embodiments, the AC-DC conversion module includes an AC-DC conversion circuit, such as an inverter circuit. Among them, the AC-DC conversion circuit can use a bridge rectifier circuit. The output port 33 is electrically connected to the adapter 10 to provide a charging voltage for the energy storage device 20 installed on the adapter 10. In this embodiment, the output power of the charger 30 is greater than or equal to 500W and less than or equal to 2000W.

[0083] In some embodiments, the charger 30 can also be used to charge power tools. The power tools are riding vehicles. Specifically, riding power tools include but are not limited to riding lawn mowers and riding snow blowers, all-terrain vehicles, electric motorcycles, etc. In some embodiments, since the cable connector of the charger 30 does not match the charging port of the vehicle, the charger 30 charges the riding vehicle through an adapter connector.

[0084] The adapter 10 includes a housing 11, at least one coupling portion 12, and a handle 1111 for a user to hold. The coupling portion 12 is disposed on the housing 11 for mounting a plurality of energy storage devices 20. The adapter 10 is capable of charging the energy storage device 20 mounted on the coupling portion 12. Specifically, the energy storage device 20 includes a battery pack. In some embodiments, the plurality of energy storage devices 20 may be battery packs of the same type, or may include two or more battery packs of different types. For example, having different capacities, different rated (nominal) voltages, etc. The output power of the adapter 10 is greater than or equal to 500W and less than or equal to 2000W.

[0085] Definition Figure 3 and Figure 5 The up, down, left, right, front and back directions are shown. The left and right direction is defined as the extension direction of the housing 11 of the adapter 10. The projection of the adapter 10 on a plane perpendicular to the left and right directions is roughly L-shaped. The energy storage device 20 can be detachably coupled to the coupling portion 12 of the adapter 10 along the up and down direction or the front and back direction. When the charging of one of the energy storage devices 20 is completed, the user can remove the fully charged energy storage device 20 and use it immediately without waiting for the charging of the other energy storage devices 20 to be completed.

[0086] The handle 1111 is disposed on the upper portion of the housing 11 of the adapter 10 and extends in the left-right direction. In some embodiments, the length L1 of the handle 1111 in the left-right direction is greater than or equal to 70 mm. In some embodiments, the length L1 of the handle 1111 in the left-right direction is greater than or equal to 80 mm. Figure 4 As shown, when the user holds the handle 1111 to lift the adapter 10, the projection of the center of gravity G1 of the adapter 10 on the horizontal plane falls within the projection of the adapter 10 on the horizontal plane. The above-mentioned horizontal plane can be understood as the ground or the ground plane. Specifically, the center of gravity G1 of the adapter 10 is located below the handle 1111 in the vertical direction. Figure 5 As shown, when the energy storage device 20 is installed on at least one coupling portion 12 of the adapter 10 , the center of gravity G2 of the adapter is located at the front side of the handle 1111 in the front-to-back direction.

[0087] In this way, regardless of whether the energy storage device 20 is installed on the adapter 10, when the user lifts the handle 1111 on the adapter 10, the center of gravity of the adapter or the adapter and the energy storage device as a whole can be close to the handle 1111, so that the user can save more effort and have a better experience when lifting the adapter or the energy storage device.

[0088] The adapter 10 also includes a first port and a second port. The first port is used to electrically connect and communicate with the first charging device, and the second port is used to electrically connect and communicate with the second charging device. In some embodiments, the first charging device is a charger, and the second charging device is an adapter. In some embodiments, the first charging device is a first adapter, and the second charging device is a second adapter different from the first adapter. It can be understood that the user can use one or more adapters 10 to install and charge multiple energy storage devices 20 at the same time. After charging, the user can optionally remove one or more of the energy storage devices 20 from the adapter 10. Therefore, two or more energy storage devices can be charged easily and conveniently.

[0089] In some embodiments, the charging system includes a plurality of cascaded devices. The plurality of cascaded devices include at least one first charging device and at least one second charging device. The first charging device includes: a housing; a plurality of accommodating parts, which are arranged in the housing and used to install the energy storage device. The first charging device can charge the energy storage device installed in the accommodating part. The first charging device also includes a connection port, which is used to connect the second charging device or the first charging device. The second charging device includes: a housing; a plurality of accommodating parts, which are arranged in the housing and used to install the energy storage device. The second charging device can charge the energy storage device installed in the accommodating part. The second charging device also includes a connection port, which is used to connect the first charging device or the second charging device. In some embodiments, the plurality of accommodating parts of the second charging device include at least one first accommodating part and at least one second accommodating part. Specifically, the first accommodating part and the second accommodating part have different shapes or sizes. The connection port mentioned above can be the first port or the second port. In some embodiments, the accommodating part of the first charging device has the same size as the first accommodating part or the second accommodating part of the second charging device. The above-mentioned cascade can be understood as multiple charging devices being connected end to end in structure.

[0090] In some embodiments, the charging system includes a plurality of cascaded devices, and the plurality of cascaded devices include at least one first charging device and at least one second charging device. Among them, the first charging device includes a housing; at least one first accommodating portion, which is arranged in the housing and is used to install a first energy storage device. The first charging device can charge the first energy storage device installed in the first accommodating portion. The connection port is used to connect the second charging device or the first charging device. The second charging device includes: a housing; at least one second accommodating portion, which is arranged in the housing and is used to install a second energy storage device. The second charging device can charge the second energy storage device installed in the second accommodating portion. The connection port is used to connect the first charging device or the second charging device. The first accommodating portion and the second accommodating portion have different shapes or sizes. The above-mentioned cascading can be understood as multiple charging devices being connected end to end in structure.

[0091] In some embodiments, the first accommodating portion is configured to install a first energy storage device, and the second accommodating portion is configured to install a second energy storage device. The capacity of the first energy storage device is greater than the capacity of the second energy storage device. The first energy storage device includes a plurality of first energy storage units, and the second energy storage device includes a plurality of second energy storage units. In some embodiments, the chemical properties of the first energy storage unit and the second energy storage unit are different. In some embodiments, the first energy storage unit is a lithium iron phosphate battery cell. The second energy storage unit is a ternary lithium battery cell. In some embodiments, the first charging device and the second charging device are the same. In some embodiments, the first charging device and the second charging device are different. Optionally, the first charging device or the second charging device may be one of a power adapter and a DC-DC charger. Optionally, the second charging device may also be a riding lawn mower with a charging function.

[0092] In some embodiments, the first port and the second port can be interchangeable. It can be understood that the first port can be used to connect to the first charging device or the second charging device. Similarly, the second port can be used to connect to the first charging device or the second device.

[0093] Figure 6 A charging system 100 is shown as a specific embodiment. The adapter 10 includes at least one first adapter 10a and at least one second adapter 10b (for example, there are two second adapters 10b in this embodiment). The first adapter 10a and one or more second adapters 10b are connected in series. The charging system 100 can charge a larger number of energy storage devices 20 by connecting a larger number of first adapters 10a and second adapters 10b in series. In some embodiments, the second adapter 10b is the same as the first adapter 10a. In some embodiments, the second adapter 10b is different from the first adapter.

[0094] Specifically, the first adapter 10a has a first port 111 and a second port 112. The second adapter 10b has a first port 111 and a second port 112. Among them, the first port 111 of the first adapter 10a is used to connect to the output port 33 of the charger 30. In some embodiments, the output port 33 of the charger 30 can be moved. The second port 112 of the first adapter 10a is used to connect to the first port 111 of the second adapter 10b. The second port 112 of the second adapter 10b is used to connect to the first port of the adapter connected in series. According to the above connection method, the charger 30 is electrically connected to the first adapter 10a and the second adapter 10b in sequence, so as to charge the energy storage device 20 installed on the first adapter 10a or the second adapter 10b.

[0095] In this embodiment, the first port 111 of the first adapter 10a is an electric energy input port, and the second port 112 of the first adapter 10a is an electric energy output port. The first port 111 of the second adapter 10b is an electric energy input port, and the second port 112 of the second adapter 10b is an electric energy input port. Among them, the first adapter 10a and the second adapter 10b are electrically connected through the electric energy output port and the electric energy input port. The current output by the charger 30 flows through the first adapter 10a and the second adapter 10b, so that the first adapter 10a and the second adapter 10b perform the charging function. In some embodiments, the charger 30 can also be used to charge the power tool. In some embodiments, the power tool includes a riding vehicle. Specifically, the riding vehicle includes a riding lawn mower, a standing lawn mower, an all-terrain vehicle, and an electric motorcycle. Of course, the power tool can also be a snow blower or a bench tool. When the second port 112 (power output port) of the first adapter 10a is electrically connected to the first port (power input port) of the second adapter 10b, the relative position of the first adapter 10a and the second adapter 10b can be adjusted. Specifically, the first port 111 and the second port 112 of the first adapter 10a are arranged outside the housing 11 of the first adapter 10a. The first port 111 and the second port 112 of the second adapter 10b are arranged outside the housing 11 of the second adapter 10b. In some embodiments, the second port 112 of the first adapter 10a is extended to the outside of the housing 11 of the first adapter 10a through a wire, and the second port 112 of the first adapter 10a can move relative to the housing 11 of the first adapter 10a. The first port 111 and the second port 112 of the second adapter 10b are also extended to the outside of the housing 11 of the second adapter 10b through a wire, and the first port 111 and the second port 112 of the second adapter 10b can move relative to the housing 11 of the second adapter 10b. The above-mentioned wire can be understood as a cable. The above-mentioned electrical connection method between the first adapter 10a and the second adapter 10b is introduced. It should be noted that a similar connection method is also used to realize power transmission between multiple second adapters 10b or multiple second adapters 10a.

[0096] In this way, the first adapter 10a and the second adapter 10b are electrically connected and signal connected by a cable, which can improve the flexibility of the first adapter and the second adapter during installation. On the other hand, it can help the adapter and the energy storage device to dissipate heat during the charging process, thereby improving the life and charging performance of the adapter and the energy storage device.

[0097] In some embodiments, the adapter 10 further includes a fixing assembly. The fixing assembly is used to fix the adapter 10 to other objects. In some embodiments, the adapter 10 can be fixed to a wall through the fixing assembly. Specifically, the fixing assembly in this embodiment can be a fixing structure that can be removed without tools, such as a snap-on structure. Of course, a fixing structure that requires tools to be removed, such as screws and bolts, can be selected. In this way, by setting a fixing assembly to fix the adapter 10 on a wall or a work surface, it is convenient for users to store and manage the adapter when it is in use or idle, and save space.

[0098] In some embodiments, the adapter 10 further includes a support assembly for stacking multiple adapters. Specifically, the support assembly is used to stack the first adapter 10a and the second adapter 10b or multiple second adapters 10b. In this way, by setting the support assembly to stack multiple adapters, when the user uses more adapters to charge the energy storage device, or when the adapters are idle, space can be saved and storage management can be facilitated.

[0099] Next, representative circuits of various functions of the charging system 100 will be described below.

[0100] like Figure 7 As shown, in this embodiment, the energy storage device 20 is configured as a battery pack. The battery pack has a plurality of battery cells 21, at least one battery controller 22, at least one temperature sensor and at least one battery storage 24. The battery cells 21 in this embodiment are lithium-ion batteries. A plurality of battery cells 21 are connected to the positive battery terminal 20a and the negative battery terminal 20b. The battery controller 22 is connected to the battery cells 21 and can detect electrical parameters of the plurality of battery cells 21. For example, the voltage and current of the battery cells. In addition, the battery controller 22 can estimate the charge level and internal resistance of the battery cells 21 based on the detected voltage of the battery cells 21. The temperature sensor is arranged near the plurality of battery cells 21 and detects the temperature of the plurality of battery cells 21. The temperature sensor is connected to the battery controller 22, and the battery controller 22 obtains the temperature of the battery cells 21 through the temperature sensor. The battery controller 22 is connected to the battery communication terminal 20c.

[0101] The battery memory 24 is used to store battery information of the energy storage device. The battery information includes but is not limited to at least one or any combination of two or more of the following: a single identification code of the energy storage device 20; a model code of the energy storage device 20; a rated voltage of the energy storage device 20; a rated current of the energy storage device 20; a maximum allowable temperature of the energy storage device 20; a maximum current experienced by the energy storage device 20; a maximum temperature experienced by the energy storage device 20; a start date of use of the energy storage device 20; a total charge count of the energy storage device 20; a total discharge count of the energy storage device 20; a total discharge time of the energy storage device 20; and an administrator of the energy storage device 20. The memory 24 is connected to the battery controller 22. The battery controller 22 can read, update, overwrite, and delete the battery information stored in the memory 24.

[0102] The first adapter 10a and the second adapter 10b each include a charging circuit 14 and at least one control circuit 13. The charger 30 is connected to an external AC power source through an AC input power line 31. The AC-DC conversion module in the charger 30 transforms or converts the AC power of the external AC power source into DC power. The DC power output by the charger 30 is provided to each charging circuit 14 of the first adapter 10a and the second adapter 10b. Each charging circuit 14 is connected to a corresponding battery interface 15 and controls the charging current provided from the battery interface 15 to the corresponding energy storage device 20. Specifically, a switch 141 is provided between the first port 111 of the first adapter 10a and each charging circuit 14. Each switch 141 is controlled by a corresponding control circuit 13. When one of the energy storage devices 20 is connected to the corresponding battery interface 15, the control circuit 13 controls the corresponding switch 141 to close, thereby charging the energy storage device 20. When the energy storage device 20 is separated from the battery interface 15, or when the charging of the energy storage device 20 is completed, the control circuit 13 disconnects the switch 141. It should be noted that the first port and the second port are configured to transmit electrical signals or communication signals.

[0103] When the energy storage device 20 is electrically connected to the battery interface 15, the control circuit 13 in the adapter is connected to the corresponding battery controller 22 to enable communication between them. The control circuit 13 obtains the battery information stored in the corresponding battery memory 24 from each battery controller 22. In addition, the control circuit 13 can obtain the status indication of the corresponding energy storage device 20 from each battery controller 22. For example, the status indication of each energy storage device 20 includes at least one or any combination of two or more of the following items: the charging level of the energy storage device 20; the output voltage of the energy storage device 20; the internal resistance of the energy storage device 20; the temperature of the energy storage device 20 and the charging time of the energy storage device 20. The control circuit 13 stores the obtained battery information and the status indication of each energy storage device 20 in the memory. The battery information and status indication of each energy storage device 20 are stored in the corresponding memory together with the interface identification information of the battery interface 15 to which the energy storage device 20 is connected.

[0104] In some embodiments, the first adapter 10a also includes a communication circuit (not shown). Specifically, the communication circuit is connected to the control circuit 13. The communication circuit can be connected to the remote device in a wireless or wired manner to achieve communication between them. The control circuit 13 can send and receive information or signals to the remote device via the communication circuit. The remote device mentioned herein can be any of the above-mentioned remote devices, such as but not limited to mobile phones, smart phones, tablet computers or some other (e.g., portable) computer devices.

[0105] Next, a charging control method of the charging system 100 will be described below.

[0106] In this embodiment, the control circuit 13 controls whether to charge the energy storage device 20 installed on the adapter 10 through the charging circuit 14 according to the information received by at least one of the first port and the second port of the adapter. Specifically, the control circuit is at least used to control the on-off of the charging current between the first port and the second port.

[0107] In some embodiments, the control circuit 13 controls the charging circuit 14 to charge multiple energy storage devices contained in multiple joints at the same time. Specifically, when multiple energy storage devices are installed in the adapter and need to be charged, the control circuit 14 controls the corresponding switch 141 to close so that the DC current output by the charger passes through the charging current, thereby charging the energy storage device. It can be understood that when the charger is connected to multiple first adapters and second adapters at the same time, the above control method can also be used to charge multiple energy storage devices installed on the adapter.

[0108] In some embodiments, the control circuit 13 controls the charging circuit 14 to give priority to charging the energy storage device with the most remaining power among the multiple energy storage devices accommodated in the multiple joints. Specifically, when multiple energy storage devices are installed on the adapter, the battery communication terminal 20c of the energy storage device is connected to the communication terminal in the battery interface 15 of the adapter, and the control circuit 13 is connected to the battery controller 22 to obtain the remaining power in the current multiple energy storage devices, and the switch 141 corresponding to the energy storage device with the most remaining power is controlled to be closed to give priority to charging the corresponding energy storage device. When the above-mentioned energy storage device is charged, the control circuit 13 once again charges the energy storage device with the most remaining power. This cycle is performed until all energy storage devices installed on the adapter are fully charged. The advantage of this is that when the user urgently needs a fully charged energy storage device, the adapter can maximize the power allocation to the energy storage device with the most remaining power for charging, so as to meet the user's needs as soon as possible. It can be understood that when the charger is connected to a first adapter and multiple second adapters at the same time, the above-mentioned control method can also be used to charge multiple energy storage devices installed on the adapter.

[0109] In some embodiments, the charging system further includes an operating member, and the control circuit 13 controls the charging circuit 14 to charge multiple energy storage devices housed in multiple coupling parts according to the order set by the operating member. Specifically, the operating member can be set as a switch installed on the housing of the adapter. The operating member can also be set as a wireless device. When the user needs to charge multiple energy storage devices, the operating member is controlled to charge the designated energy storage device. The advantage of this is that the adapter has strong operability and high charging flexibility, and the user can set the energy storage device that needs to be charged first according to his own needs. It can be understood that when the charger is connected to a first adapter and multiple second adapters at the same time, the above-mentioned control method can also be used to charge multiple energy storage devices installed on the adapter.

[0110] Specifically, the adapter can be configured to receive an operation instruction signal from the operating member. The operation instruction signal can be a charging start signal or a charging stop signal, which is used to instruct the adapter to perform various operations. In this case, the operation instruction signal is preferably received together with the interface identification information of the battery interface 15 that is the target of the operation instruction signal. According to this configuration, the user can specify (select) a specific battery interface 15 and start or stop charging of the battery interface 15.

[0111] In some embodiments, when the charger is connected to at least one first adapter and at least one second adapter at the same time, charging can be performed in a preset order. Specifically, the energy storage device on the first adapter is charged first. Specifically, the energy storage device on the second adapter is charged first. The preset order can be set by the user. Of course, the preset order can be the priority between the adapters pre-defined at the factory.

[0112] In some embodiments, the current output by the charger flows through the first adapter and the second adapter so that the first adapter and the second adapter perform charging functions. When the first adapter is partially damaged, the control circuit controls the current output by the charger to flow through the second adapter so that the second adapter performs charging functions.

[0113] The charging system 100 discussed above includes at least one first adapter 10a and at least one second adapter 10b, and is configured to electrically connect the first adapter 10a and the second adapter 10b. However, the applicable adapters of the charging system 100 in the present application are not limited to this configuration. For example, Figure 8 Another configuration of the adapter in the present application is shown. The adapter in this embodiment can be used as both a charger and an adapter.

[0114] Now refer to Figures 8 to 13 Let's introduce another configuration of the adapter.

[0115] The charging system 100 also includes an adapter 10c, which includes a housing 11, a plurality of coupling parts 12, and a handle 1111 for a user to hold. Among them, the plurality of coupling parts 12 are arranged on the housing 11 for mounting a plurality of energy storage devices. The coupling part 12 includes at least one first coupling part 121 and at least one second coupling part 122. Among them, the handle 1111 is integrally formed with the housing 11. Of course, the handle 1111 is also configured to be fixedly mounted to the housing 11 by assembly. In this embodiment, the output power of the adapter 10c is greater than or equal to 500W and less than or equal to 2000W.

[0116] In some embodiments, the adapter 10c includes at least two second coupling parts 122. The plurality of second coupling parts 122 are arranged in a straight line parallel to the extension direction of the handle 1111. The interfaces of the first coupling part 121 and the second coupling part 122 are the same. In some embodiments, the first coupling part 121 and the second coupling part 122 are different. Specifically, the interfaces of the first coupling part 121 and the second coupling part 122 are different.

[0117] In some embodiments, the energy storage device installed on the adapter 10c may have different characteristics. Specifically, the energy storage device includes at least one first energy storage device 20a and at least one second energy storage device 20b. Among them, the capacity of the first energy storage device 20a is greater than or equal to twice the capacity of the second energy storage device 20b. The first energy storage device includes at least one first battery cell unit, and the second energy storage device includes at least one second battery cell unit, and the capacity of the first battery cell unit is at least four times the capacity of the second battery cell unit. The first energy storage device 20a is installed to the first combination portion 121, and the second energy storage device 20b is installed to the second combination portion 122. In this embodiment, the first energy storage device 20a has a first characteristic, and the second energy storage device 20b has a second characteristic different from the first characteristic. The first characteristic and the second characteristic are at least one of physical size, shape, chemical property and operating characteristics. Among them, the first energy storage device 20a includes a lithium iron phosphate battery cell, and the second energy storage device 20b includes a ternary lithium battery cell. The types of the first energy storage device include but are not limited to LFP, sodium ion, solid / semi-solid, 21700 battery, 40135 battery, 4680 battery, 46950 battery, 46120 battery, 35184.

[0118] In some embodiments, the height of the first energy storage device 20a is greater than the height of the second energy storage device 20b. The height of the first energy storage device 20a installed on the adapter 10c is greater than the height of the second energy storage device 20b installed on the adapter 10c.

[0119] The first combining portion 121 or the second combining portion 122 for installing the first energy storage device 20a or the second energy storage device 20b in this embodiment is arranged on the front and rear sides of the adapter 10c. It can be understood that the first combining portion 121 and the second combining portion 122 are arranged back to back. The advantage of such a design is that when the weight and volume of the first energy storage device 20a and the second energy storage device 20b installed on the adapter 10c are different, the adapter with the energy storage device installed can be placed more stably. On the other hand, with such a design, the center of gravity of the whole can be closer to the vicinity of the handle, and the user can save more effort when lifting the handle 1111.

[0120] In this embodiment, the definition is as follows Figure 8 The upper, lower, left, right, front and rear directions are shown. The left and right directions are defined as the extending direction of the housing 11 of the adapter 10c. The projection of the adapter 10c on a plane perpendicular to the left and right directions is roughly T-shaped. Figures 8 to 9b As shown, the first energy storage device 20a and the second energy storage device 20b can be detachably coupled to the first coupling portion 121 or the second coupling portion 122 of the adapter 10c in the up-down direction or the front-back direction. The handle 1111 is disposed on the upper portion of the housing 11 of the adapter 10c and extends in the left-right direction. In some embodiments, see Figure 9a As shown, the ratio of the length L2 of the handle 1111 in the left-right direction to the length L3 of the adapter 10c in the left-right direction is greater than or equal to 0.7 and less than or equal to 1.

[0121] In some embodiments, the projection of the handle 1111 on the bottom surface of the adapter 10c is located between the projection of the first joint portion 121 on the bottom surface of the adapter 10c and the projection of the second joint portion 122 on the bottom surface of the adapter 10c. Specifically, the projection area of ​​the second joint portion 122 on the bottom surface of the adapter 10c is larger than the projection area of ​​the first joint portion 121 on the bottom surface of the adapter 10c.

[0122] In this embodiment, the adapter 10c has a first port 111 and a second port 112. The first port 111 is used as an energy input port, and the second port 112 is used as an energy output port for connecting a second charging device. Specifically, when the first port 111 is not connected to an external power source, the first energy storage device 20a charges the second energy storage device 20b. When the first port 111 is connected to an external power source, the charging circuit uses an external power source to charge the first energy storage device 20a or the second energy storage device 20b. When the first port 111 is connected to an external power source, the charging circuit uses an external power source to charge the first energy storage device 20a and the second energy storage device 20b at the same time. In some embodiments, the charging circuit is also configured to use the first energy storage device to charge the second energy storage device with the most remaining power in the two second energy storage devices. It should be noted that the above-mentioned external power source can be a charger or other forms of external direct current. In some embodiments, the external power source is an AC power source. The charger also includes an inverter circuit for converting the AC power source into a DC power source. In some embodiments, the external power source is a DC power source output by a high-power charger. The high-power charger mentioned above can be understood as the charger 30 in the charging system 100. In some embodiments, the adapter 10c includes a fixing component and a supporting component. The structure and function of the fixing component and the supporting component have been introduced above and will not be repeated here.

[0123] Next, the working principle when the adapter 10 c is electrically connected to the charger 30 is described.

[0124] In some embodiments, see Fig.10As shown, the charging system 100 includes a charger 30, a first adapter 10a, a second adapter 10b, and an adapter 10c. Specifically, the first port 111 of the adapter 10c is connected to the second port 112 of the second adapter 10b, thereby receiving the direct current output from the charger 30 to charge the first energy storage device 20a and the second energy storage device 20b at the same time. It should be noted that the adapter 10c can also be connected after the first adapter 10a and between the second adapter 10b. It can be understood that the connection order of the first adapter 10a, the second adapter 10b, and the adapter 10c is not fixed.

[0125] In some embodiments, see Fig.11 As shown, the charging system 100 includes a charger 30 and an adapter 10c, wherein the first port 111 of the adapter 10c is electrically connected to the output port 33 of the charger 30, for receiving direct current outputted from the charger 30 to charge the energy storage device 20a or 20b installed on the adapter 10c.

[0126] In the above embodiment, the adapter 10c is electrically connected to the charger 30 to provide a charging voltage to the energy storage device installed thereon. In this embodiment, the first adapter 10a, the second adapter 10b and the energy storage device on the adapter 10c are charged in a preset order.

[0127] In some embodiments, the adapter 10c is used as a charger. The difference from the above two embodiments is that the adapter 10c does not need to be electrically connected to the charger 30 to charge the second energy storage device 20b. It can be understood that the first energy storage device 20a installed on the adapter 10c charges the second energy storage device 20b installed on the adapter 10c. Among them, the control circuit is configured to control the first energy storage device 20a to charge the second energy storage device 20b when the operating parameter of the first energy storage device 20a is greater than or equal to a preset value. Among them, the operating parameters include but are not limited to the charge state, health state, etc. of the first energy storage device 20a.

[0128] In some embodiments, the first energy storage device 20a simultaneously charges multiple second energy storage devices 20b installed on the adapter 10c. In some embodiments, the first energy storage device 20a preferentially charges the second energy storage device 20b with the most remaining power among the multiple second energy storage devices 20b. In some embodiments, the first energy storage device 20a charges the multiple second energy storage devices 20b in a preset order.

[0129] The second charging circuit 14c of the adapter 10c in this embodiment is different from the charging circuit 14 in the first adapter 10a and the second adapter 10b in the above-mentioned embodiment in that the second charging circuit 14c further includes a DC-DC conversion circuit 142. In this embodiment, the output power of the charging circuit 14 is greater than or equal to 500W and less than or equal to 2000W.

[0130] Next, combine Fig.12 The working mode of the adapter 10c in this embodiment is introduced.

[0131] When the adapter 10c is electrically connected to the charger 30, the control circuit 13 controls the switch 141 to close. A portion of the DC power output by the charger 30 charges the first energy storage device 20a through the charging circuit 14. Another portion of the DC power output by the charger 30 charges the second energy storage device 20b through the second charging circuit 14c.

[0132] When the adapter 10c is not connected to the charger 30, the control circuit 13 controls the switch 141 to close, and the direct current output by the first energy storage device 20c charges the second energy storage device 20b through the second charging circuit 14c.

[0133] In some embodiments, when the adapter 10c is not connected to the charger 30, the first energy storage device 20a can charge the second energy storage device 20b while also charging the energy storage devices on the remaining adapters electrically connected to the charger 30. Fig.10 As shown, when the adapter 10c is not connected to the charger 30, the first energy storage device 20a can also charge the energy storage device installed on the first adapter 10a or the second adapter 10b.

[0134] In some embodiments, a portion of the DC power output by the charger 30 charges the first energy storage device 20a through the charging circuit 14. Another portion of the DC power output by the charger 30 charges the second energy storage device 20b through the second charging circuit 14c. Note that the DC power does not pass through the DC-DC conversion circuit 142. When the adapter 10c is not connected to the charger 30, the DC power output by the first energy storage device 20a charges the second energy storage device 20b through the second charging circuit 14c including the DC-DC conversion circuit 142.

[0135] In some embodiments, the DC-DC converter circuit 142 uses Fig.13The topological structure shown converts the DC power outputted by the charger 30 or the DC power U1 outputted by the first energy storage device 20a into DC power U2 to provide charging voltage for the second energy storage device 20b. The DC-DC conversion circuit 142 at least includes a switch tube Q1, a switch tube Q2, a switch tube Q3 and a switch tube Q4, a capacitor C1, a capacitor C2 and an inductor L. Among them, the control circuit 13 is respectively connected to the gates of the switch tubes Q1, Q2, Q3 and Q4, and is used to control the conduction and disconnection of the switch tubes Q1, Q2, Q3 and Q4, thereby realizing the voltage conversion function of the DC-DC conversion circuit. In this embodiment, the DC-DC conversion circuit 142 can be understood as a four-switch Buck-Boost circuit (Four Switch Buck-Boost, FSBB). The use of the above-mentioned FSBB circuit can realize soft switching and thus improve the conversion efficiency of the DC-DC conversion circuit.

[0136] Next, combine Figures 13 to 15 The topology of the above-mentioned FSBB circuit and its control method are specifically introduced.

[0137] Specifically, Fig.14a and Fig.15 As shown, the control circuit controls the switch tubes Q1 and Q4 to be turned on and the switch tubes Q2 and Q3 to be turned off during the T1 period. The inductor voltage is U1 and the inductor current i L The rising slope is U1 / L, and the output current i o is 0. The above process is called the FSBB circuit is in working mode A. Fig.14b and Fig.15 As shown, the control device controls the switch tubes Q1 and Q2 to be turned on and the switch tubes Q3 and Q4 to be turned off during the T2 period. The inductor voltage is U1-U2 and the inductor current i L The rising slope is U1-U2 / L, and the output current i o Equal to the inductor current i L The above process is called the FSBB circuit is in working mode B. Fig.14c and Fig.15 As shown, the control device controls the switch tubes Q2 and Q3 to be turned on and the switch tubes Q1 and Q4 to be turned off during the T3 period. The inductor voltage is U2 and the inductor current i L The rising slope is -U1 / L, and the output current i o Equal to the inductor current i L The above process is called the FSBB circuit is in working mode C. Fig.14d and Fig.15 As shown, the control device controls the switch tubes Q3 and Q4 to be turned on and the switch tubes Q1 and Q2 to be turned off during the T4 period, the inductor voltage is 0, and the inductor current i L The slope is 0, and the output current io =0. The above process is called the FSBB circuit in working mode D. The direction of the inductor current changes twice in one cycle, and there is a negative current Id to achieve zero voltage turn-on of the switch tubes Q1 and Q4.

[0138] The above four working modes can constitute different working modes of the FSBB circuit. For example, mode A and mode B can be equivalent to the Boost working mode, and mode B and mode C can be equivalent to the Buck working mode. The inductor voltage of module D is 0, and the circuit operating frequency can be maintained by increasing or decreasing the duration of the D mode.

[0139] See also Fig.16 and Fig.18 As shown, the present application also discloses a power supply system 200, which is specifically an AC / DC bidirectional power supply system. The power supply system 200 includes a power supply 210, a power conversion device 220, and a power receiving device 230. The power conversion device 220 is configured to be electrically connected to the power supply 210 and convert the characteristics of the current obtained from the power supply 210. A plurality of power receiving devices 230 are electrically connected to the power conversion device 220 to obtain the power from the power supply 210.

[0140] In some embodiments, the output power of the power conversion device 220 is greater than or equal to 10W and less than or equal to 10KW. In some embodiments, the output power of the power conversion device 220 is greater than or equal to 10W and less than or equal to 250W. In some embodiments, the output power of the power conversion device 220 is greater than or equal to 250W and less than or equal to 550W. In some embodiments, the output power of the power conversion device 220 is greater than or equal to 500W and less than or equal to 10KW. In some embodiments, the output power of the power conversion device 220 is greater than or equal to 1000W and less than or equal to 10KW. In some embodiments, the output power of the power conversion device 220 is greater than or equal to 1KW and less than or equal to 3KW. In some embodiments, the output power of the power conversion device 220 is greater than or equal to 3KW and less than or equal to 5KW. In some embodiments, the output power of the power conversion device 220 is greater than or equal to 5KW and less than or equal to 7KW. In some embodiments, the output power of the power conversion device 220 is greater than or equal to 7KW and less than or equal to 10KW. In some embodiments, the output power of the power conversion device 220 may also include 10W, 50W, 100W, 200W, 500W, 800W, 1KW, 1.5KW, 2KW, 2.5KW, 3KW, 3.5KW, 4KW, 4.5KW, 5KW, 5.5KW, 6KW, 6.5KW, 7KW, 7.5KW, 8KW, 8.5KW, 9KW, 9.5KW, and 10KW.

[0141] The source of the power supply 210 includes at least one of a solar panel 211, a tram charging pile 212, an in-car cigarette lighter 213, a mains socket 214, or a battery pack 215. Among them, the output power of the solar panel 211 is greater than or equal to 100W. Of course, the solar panel 211 can have the ability of high power output, and its output power is greater than or equal to 1000W. The output of the tram charging pile 212 supplies power to the power receiving device 100 in the charging system 200 through the power conversion device 220. In some embodiments, the output power of the tram charging pile 212 is greater than or equal to 1000W. The output power of the in-car cigarette lighter 213 is greater than or equal to 100W. Of course, the in-car cigarette lighter 213 can also have the ability of high power output, and its output power is greater than or equal to 1000W. In some embodiments, the in-car cigarette lighter 213 can be connected to a DC-DC charger, so as to output the electric energy in the vehicle power supply to power the battery pack or DC appliance electrically connected to the DC-DC charger. The battery pack 215 can be an external battery pack, or a built-in battery pack of the riding vehicle. The types of the battery packs include but are not limited to LFP, sodium ion, solid / semi-solid, 21700 battery, 40135 battery, 4680 battery, 46950 battery, 46120 battery, 35184.

[0142] The power conversion device 220 includes at least one of an AC-DC charger, a bidirectional power supply, a DC-DC charger, and a riding vehicle. Specifically, the AC-DC charger is at least used to convert the AC power connected to the mains socket into DC power, so as to be used by the power receiving device 230. In some embodiments, the output power of the AC-DC charger is greater than or equal to 100W. In some embodiments, the output power of the AC-DC charger is greater than or equal to 210W. In some embodiments, the AC-DC charger also has a larger power output capacity, and its output power is greater than or equal to 1000W. The DC-DC charger is at least used to convert the DC power from the solar panel, EV charging, the car cigarette lighter or the battery pack into DC power compatible with the power receiving device. When the riding vehicle is used as the power conversion device 220, its built-in battery pack can be used as a power source to convert the DC power in the energy storage device into AC power output.

[0143] The power receiving device 230 includes at least one of a device with a battery pack installed and an AC device 235. The AC device can be a household appliance such as a TV or a barbecue grill, and the power supply 210 outputs AC power through the power conversion device 220 to provide power for the TV or the barbecue grill. In some embodiments, the device with a battery pack installed includes but is not limited to at least one of a DC-DC charger, a power adapter, a riding vehicle, or an outdoor walking device. The DC-DC charger is connected to the riding vehicle. In some embodiments, the power receiving device 230 may include a plurality of devices with battery packs installed connected in sequence. The power receiving device is configured to detachably install a plurality of energy storage devices. The plurality of energy storage devices include at least a first energy storage device and a second energy storage device. When the power supply is powered on, the power supply charges the first energy storage device and the second energy storage device; when the power supply is powered off, the first energy storage device charges the second energy storage device. In some embodiments, the first energy storage device includes at least one large-capacity battery pack, the energy of which is greater than or equal to 1kW·h and less than or equal to 30kW·h. In some embodiments, a battery pack equal to 2kW·h. In some embodiments, the battery pack is a battery pack having an energy greater than or equal to 3kW·h. In some embodiments, the battery pack is a battery pack having an energy greater than or equal to 4kW·h. In some embodiments, the battery pack is a battery pack having an energy greater than or equal to 5kW·h. In some embodiments, the battery pack is a battery pack having an energy greater than or equal to 6kW·h. In some embodiments, the second energy storage device includes at least one small-capacity battery pack having an energy greater than or equal to 100W·h and less than or equal to 2kW·h. The battery pack is a battery pack having an energy greater than or equal to 0.1kWh. In some embodiments, the battery pack is a battery pack having an energy greater than or equal to 0.4kWh. In some embodiments, the battery pack is a battery pack having an energy greater than or equal to 0.6kWh. In some embodiments, the battery pack is a battery pack having an energy greater than or equal to 1kWh.

[0144] In some embodiments, the device equipped with the battery pack includes a first power adapter 231, a second power adapter 232, a DC-DC charger 233, and a riding vehicle 234 connected in sequence. Of course, the first power adapter 231, the DC-DC charger 233, the second power adapter 232, and the riding vehicle 234 can also be connected in the order of the first power adapter 231, the DC-DC charger 233, the second power adapter 232, and the riding vehicle 234. The power conversion device 220 exchanges control information and other information with the first power adapter 231, the second power adapter 232, and the DC-DC charger 233 by means of power carrier communication or wireless communication.

[0145] In some embodiments, the battery pack includes at least one battery cell, and at least one of the power receiving devices 230 can achieve a charging rate of the battery cell of greater than or equal to 8C. In some embodiments, at least one of the power receiving devices 230 can achieve a charging rate of the battery cell of greater than or equal to 9C. In some embodiments, at least one of the power receiving devices 230 can achieve a charging rate of the battery cell of greater than or equal to 10C.

[0146] Specifically, the first power adapter 231 is used to install the first battery pack 231a. The second power adapter 232 is used to install the second battery pack 232a. Among them, the number of the first battery pack 231a or the second battery pack 232a is one or more. The types, chemical parameters and characteristic parameters of the multiple first battery packs 231a or the second battery packs 232a can be the same or different. The number of DC-DC chargers 233 can be one or more. The DC-DC charger 233 is used to install the first energy storage device 233a or the second energy storage device 233b. When the DC-DC charger 233 is electrically connected to the charging system 200, it can receive the electric energy output by the electric energy conversion device 220 to charge the first energy storage device 233a or the second energy storage device 233b connected thereto. When the DC-DC charger 233 cannot obtain electric energy from the power supply system 200, the second energy storage device 233b can be charged through the first energy storage device 233a. In some embodiments, the first energy storage device 233a can simultaneously charge multiple second energy storage devices 233b installed on the DC-DC charger 233. In some embodiments, the first energy storage device is installed to the first DC-DC charger, and the second energy storage device is installed to the second DC-DC charger. The first energy storage device can charge the second energy storage device. In some embodiments, the first energy storage device is installed to a riding vehicle, and the second energy storage device is installed to a DC-DC charger. The first energy storage device charges the second energy storage device.

[0147] The bidirectional charging system also includes a wireless communication module that is communicatively connected to a remote device. The wireless communication module is configured to receive a signal output by the remote device to control the first energy storage device to charge the second energy storage device. In some embodiments, the wireless communication module is configured to receive a signal output by the remote device to control the first energy storage device on the DC-DC charger or the first energy storage device on the riding vehicle to charge the second energy storage device. In some embodiments, the remote device is configured to obtain a signal output by the wireless communication module to display the remaining charging time or charging fault information.

[0148] In some embodiments, the riding vehicle or outdoor walking equipment can receive direct current output by the power conversion device 220 to charge the battery pack built therein. In some embodiments, the riding vehicle can also output direct current to power other power receiving devices 230 connected to the power conversion device 220. The riding vehicle includes a first interface, which is configured to be electrically connected to the power output port of the first adapter or the power output port of the second adapter. The connection method between the riding vehicle and the power output port includes but is not limited to a wired connection, a wireless connection, and a hard connection.

[0149] In some embodiments, when the power conversion device 220 in the power supply system is set to a riding vehicle. The power supply 210 is a battery pack set in the riding vehicle. In this embodiment, the power conversion device 220 is a bidirectional inverter module. The electric energy in the battery pack can output AC power for use by a television and a barbecue grill through the bidirectional inverter module, and output DC power for use by a battery pack installed on the first adapter or the second adapter and the DC-DC charger. The riding vehicle can also output AC power to directly power household appliances such as a television or a barbecue grill. In some embodiments, the riding vehicle can also output DC power adapted to a mobile phone or a 4G gateway to charge it.

[0150] Specifically, a riding vehicle or outdoor walking equipment includes a main machine; a walking wheel group, including walking wheels supporting the main machine; a driving component installed on the main machine, the driving component including a motor driving the walking wheels to rotate; an energy storage device, detachably installed on the main machine, the energy storage device is configured to at least supply power to the motor; the outdoor walking equipment also includes a bidirectional inverter module, the bidirectional inverter template is configured to be electrically connected to the energy storage device, and the bidirectional inverter module outputs the electrical energy of the energy storage device in the form of alternating current.

[0151] See also Fig.19a and Fig.19bAs shown, the riding vehicle 234 is connected or built with a bidirectional inverter module 234a for converting electric energy. The bidirectional inverter module is arranged in the host, or the bidirectional inverter module is independent of the host and detachably connected to the energy storage device 234b. Among them, the riding vehicle 234 includes a first interface 2341, a second interface 2342 and a third interface 2343 electrically connected to the bidirectional inverter module. Among them, the first interface 2341 is used to access electric energy from the power supply system or output electric energy to the power supply system. Specifically, the first interface 2341 is used to receive direct current output by the power conversion device 220 to charge the built-in energy storage device. Of course, the first interface 2341 can also output direct current to provide electric energy to other power receiving devices 230 in the charging system 200. The second interface 2342 is used to output the electric energy in the energy storage device in the form of alternating current to power household appliances such as televisions or barbecue grills. The third interface 2342 is used to output direct current to charge mobile phones or 4G gateways. The third interface may be a USB interface, specifically a Type-A or Type-C. The energy storage device in the riding vehicle may include multiple battery packs of the same type, or may include battery packs of different types. For example, the energy storage device includes a battery pack whose battery cell is lithium iron phosphate and a battery pack whose battery cell is ternary lithium.

[0152] In some embodiments, see Fig. 20 As shown, when the power conversion device 220 in the power supply system is set as an AC-DC charger, the electric energy in the power supply 210 can be transmitted to the first power adapter 231, the second power adapter 232, the DC-DC charger 233 and the riding vehicle 234. Of course, it can also be transmitted to household appliances, such as televisions, barbecue grills, etc. Among them, the power supply 210 can be a solar panel 211, a tram charging pile 212, an in-car cigarette lighter 213, and a mains socket 214. It should be noted that the above-mentioned AC-DC charger also has a DC input port for connecting DC power and converting the voltage to output DC power that is compatible with the power receiving device. Of course, the above-mentioned AC-DC charger may not have a DC input port, so the power supply that can be connected is the mains socket 214.

[0153] In some embodiments, see Fig.21 As shown, when the power conversion device 220 in the power supply system is set as a DC-DC charger, the power in the power supply 210 can be transmitted to the first energy storage device and the second energy storage device electrically connected to the DC-DC charger and the riding vehicle 234. Among them, the power supply 210 can be a solar panel 211, a tram charging pile 212, and an in-vehicle cigarette lighter 213. It should be noted that the power supply 210 can also be specifically a battery pack. The above-mentioned battery pack can be a first energy storage device, a second energy storage device or a battery pack on a riding vehicle.

[0154] In some embodiments, when the power conversion device 220 in the power supply system is set as a bidirectional power supply, the power in the power supply 210 can be transmitted to the first power adapter 231, the second power adapter 232, the DC-DC charger 233 and the riding vehicle 234. Among them, the power supply 210 can be a solar panel 211, a tram charging pile 212, an in-car cigarette lighter 213, and a mains socket 214. It should be noted that the battery pack can also be used as a power source, and the power of the battery pack is converted into AC power for use by AC appliances after passing through the bidirectional power supply. The above-mentioned battery pack can be a battery pack installed on the first adapter, the second adapter, the DC-DC charger or the riding vehicle.

[0155] See also Fig.17 As shown, in some embodiments, the power conversion device 220 further includes an AC outlet 221. When the power supply is connected, the electric energy can be supplied to the AC appliance 235 connected thereto through the AC outlet 221. When the power supply is disconnected, the electric energy of the multiple energy storage devices installed on the power receiving device is output in the form of AC via the AC outlet 221. The AC outlet 221 includes at least one of a two-pin or three-pin AC outlet.

[0156] In some embodiments, the power supply system provides power to the AC appliance to ensure its normal operation. When the mains interface cannot be connected to the mains, the battery pack in the charging system is discharged to ensure the normal use of the AC appliance. Among them, the above-mentioned battery pack includes a battery pack installed on a first adapter, a second adapter, a DC-DC charger, and a riding vehicle. Specifically, the bidirectional power supply converts the DC power output by the battery pack into AC power compatible with the AC appliance. Of course, the discharge power of the power supply system depends on the type and quantity of the battery pack. The user can set the discharge order of multiple battery packs in the charging system through a remote device, and prompt the discharge countdown, that is, the remaining battery life. When the mains interface can be connected to the mains, the charging system discharges the AC appliance through the bidirectional power supply and the electric vehicle charging pile to ensure the normal use of the AC appliance. In some embodiments, when there are many AC appliances and the required power is large, the battery pack in the power receiving device can power the AC appliance through the bidirectional power supply.

[0157] The charging system in the present application also has the function of charging and discharging at the same time. For example, the power conversion device receives the mains power connected to the mains interface, and transmits the received power to the adapter, the DC-DC charger and the riding vehicle to charge the battery pack thereon. At the same time, the power conversion device also outputs the received mains power for use by AC electrical appliances. For example, the power conversion device receives the power output by the solar panel or the electric car charging pile, and transmits the received power to the adapter, the DC-DC charger and the riding vehicle to charge the battery pack thereon. At the same time, the battery pack discharges to the peripheral device. For example, the power conversion device receives the power output by the electric car charging pile, and transmits the power to the battery pack installed on the adapter, the DC-DC charger and the riding vehicle for charging. At the same time, the battery pack discharges to the peripheral device. For example, the solar panel outputs power to the adapter or the DC-DC charger to charge the multiple battery packs electrically connected to them. At the same time, the first energy storage device electrically connected to the DC-DC charger can charge the second energy storage device.

[0158] See also Fig. 22 As shown, the AC power output port 221 can be connected to the home power grid 300 to supply power to the home power grid 300. The home power grid 300 has an AC input interface 310 for connecting the AC output port 221, a 56V power bus 22, an AC device interface 13 for connecting an AC device 131, and a DC device interface 14 for connecting a DC device 143 or an energy storage device 142. Among them, the DC device interface 14 includes a power converter or a bidirectional DC converter 141. The home power grid 300 also includes a bidirectional inverter 15, which is electrically connected to the mains interface 11 and is used to process the mains connected from the mains interface 11. Specifically, the bidirectional inverter 15 is a bidirectional inverter, which is used to convert the input AC power into DC power or convert the input DC power into AC power. The home power grid 300 also includes a solar interface 16 electrically connected to the power bus 22.

[0159] See also Fig.23 The power supply system 200 shown also includes a wireless communication module 240 that is communicatively connected to a remote device 400, and the wireless communication module is configured to be communicatively connected to a home power grid. The remote device can record the number of times and duration that the home power grid obtains power through the AC input interface. The remote device is configured to allow the user to set a circuit that has priority power supply in the home power grid. The remote device 400 can be a mobile phone, a computer, a tablet or other device.

[0160] In some embodiments, see Fig.24As shown, the charging system 200 includes a power conversion device 220 and a plurality of power receiving devices 230 connected in cascade, and the charging system 200 is configured to charge a battery pack electrically connected to the power receiving device 230. The power conversion device 220 includes a controller 222, a power interface 223 for connecting to an external power source, a connection port 224 for connecting to the power receiving device 230, and a conversion circuit 225 electrically connected to the power interface 223 and the connection port 224, respectively. The power receiving device 230 includes a controller 236, a power input port 237a for connecting to the power conversion device 220 or another power receiving device, and a power output port 237b for connecting to another power receiving device. The controller 222 of the power conversion device 220 communicates directly or indirectly with the controllers 236 of the plurality of power receiving devices 230, and records the identity of the plurality of power receiving devices 230. Specifically, the power conversion device 220 controls the corresponding power receiving device 230 on the link to charge in the order of the identity identification based on the recorded identity identification. In some embodiments, the order of the identity identification is to start from the power receiving device 230 closest to the power conversion device 220, and number them in sequence according to the order of physical connection. Among them, the order of numbering can be Arabic numerals from small to large, such as 1, 2, 3, etc. Of course, it can also be in accordance with 26 English letters, such as a, b, c, etc. The power conversion device 220 includes at least one of an AC-DC charger, a bidirectional power supply, a DC-DC charger, and a riding vehicle. The power receiving device 230 includes but is not limited to at least one of a DC-DC charger, a power adapter, a riding vehicle, or an outdoor walking device. Riding vehicles include riding lawn mowers, standing lawn mowers, all-terrain vehicles, etc.

[0161] In some embodiments, multiple power receiving devices may also be connected in parallel.

[0162] Specifically, see Fig.25As shown, after the power conversion device 220 is powered on, a voltage is provided to the communication bus 250 and the power bus 260 to power on the multiple power receiving devices 230 connected in cascade. Specifically, the power conversion device 220 gives a level signal (e.g., a PWM wave) to trigger the power receiving device 230a physically connected thereto to perform identity identification. After receiving the PWM signal, the power receiving device 230a completes the identity identification as number 01, reports the message containing the identity identification to the communication bus 250, and outputs the PWM wave to the next physically connected power receiving device 230b. After receiving the PWM signal sent by the power receiving device 230a, the power receiving device 230b completes the identity identification as number 02, reports the communication bus identity identification and outputs the PWM wave to the next physically connected power receiving device 230c, and sequentially identifies the multiple power receiving devices connected in cascade. In some embodiments, the maximum number of the above-mentioned identity identification can be 20, 30, 40 or 50. Of course, it can also be a larger or smaller value. It should be noted that, in the process of recording the identification, if no fault occurs, the maximum value of the identification number can be understood as the number of power receiving devices in the charging system. In addition to the identification, the message reported by each power receiving device also includes information indicating whether it is the last power receiving device. Specifically, each power receiving device 230 includes an End Detect pin, and whether the next stage is plugged in depends on whether the End Detect pin of the power receiving device 230 of this stage is triggered.

[0163] In some embodiments, the communication bus may be a controller area network (CAN) bus. The power conversion device 220 may communicate with the power receiving device 230 via the CAN bus. When the information data is downlinked, the remote device sends instructions to the power conversion device via the wireless communication module, and the wireless communication module transmits the instructions to the power receiving device via the controller area network communication protocol. When the information data is downlinked, the power receiving device transmits the information to the power conversion device for summary via the controller area network communication protocol, and the power conversion device reports it to the wireless communication module, and displays the relevant information on the remote device side. In some embodiments, the communication bus may be a 485 bus or a USB-PD bus.

[0164] In addition to the numbering for identification based on the order of physical connection in the above embodiments, the charging system can also use other forms for identification. In some embodiments, the charging system will charge according to the most recent charging order. In some embodiments, the charging system will charge based on the optimal charging plan. The above-mentioned optimal charging plan can be to ensure that users can obtain more fully charged battery packs in the shortest time, that is, give priority to charging battery packs with more power. The above-mentioned optimal charging plan can also be to ensure that users can obtain more battery packs with partial power in the shortest time, that is, give priority to charging battery packs with lower power. In some embodiments, the charging system will charge the battery packs in the system based on a random principle.

[0165] In some embodiments, when one or some of the power receiving devices 230 fail during the process of the power conversion device 220 recording the identifications of multiple power receiving devices 230, the power conversion device 220 starts from the last power receiving device 230, performs reverse numbering, and identifies the identification number of the failed power receiving device, and reports it to the remote device. Specifically, during the process of the power conversion device 220 performing identification on multiple power receiving devices 230, when one or some of the power receiving devices 230 are damaged and cannot transmit PWM signals, reverse numbering is performed through the terminal detection function until an abnormal power receiving device 230 is encountered, so that other normal power receiving devices 230 are not affected.

[0166] In some embodiments, when the power interface 223 is powered on, the power conversion device 220 will be triggered to re-execute the operation of recording the identity identifications of multiple power receiving devices 230. Of course, after the power conversion device 220 is powered on, it will identify whether the power receiving device 230 and the battery pack on it are devices that are allowed to access, and will not start numbering the power receiving devices 230 on the link until the handshake protocol is completed. In some embodiments, when a new power receiving device 230 is added to the charging system 200, the power conversion device 220 will be triggered to re-execute the operation of recording the identity identifications of multiple power receiving devices 230. In some embodiments, when a fault occurs in the charging system 200, the power conversion device 220 will be triggered to re-execute the operation of recording the identity identifications of multiple power receiving devices 230. Of course, the power conversion device 220 will start the renumbering operation after the current round of charging operation is completed.

[0167] In some embodiments, the charging system 200 also has the function of information polling. After the power conversion device 220 completes recording the identity identifications of multiple power receiving devices 230, it will collect information on the power receiving device 230 corresponding to each identity identification in turn, and then summarize or record the information of a single power receiving device 230 and report it to the IOT module, and display relevant information on the remote device end. During the polling process, the power conversion device 220 will query whether the bus is connected to a new power receiving device 230. If so, it will wait for idle time to re-record the identity identifications of multiple power receiving devices 230 connected in cascade. When the power supply system 200 is in standby mode, the power conversion device 220 identifies a power receiving device 230 that needs to be charged during the polling process, and will charge the power receiving device 230 that needs to be charged. Specifically, the power conversion device 220 periodically asks the power receiving device 230 with identity identification whether it needs to be charged. When the power receiving device 230 is inserted into a battery pack, the power receiving device 230 replies that it needs to be charged. The power receiving device 230 detects the voltage of the battery pack, and transmits information such as the voltage of the battery pack and the required current to the power conversion device 220. The power conversion device 220 charges the power receiving device 230 according to the transmitted information.

[0168] In some embodiments, when multiple power receiving devices 230 are connected to the charging system 200, due to the long wiring harness, there will be a relatively large voltage drop on the wiring harness, which causes the power receiving device near the rear end to be unable to charge at full power, thereby affecting the charging efficiency. Therefore, the power conversion device 220 improves the charging efficiency by raising the output voltage. The power conversion device 220 adjusts the output voltage and current according to the information of the power receiving device 230. For the power receiving device 230 with a long wiring harness, the output voltage is raised while the current is appropriately reduced to prevent over-rated power.

[0169] In some embodiments, the controller of the power conversion device adjusts the output of the connection port based on the number of power receiving devices connected to the charging system. The output includes but is not limited to output voltage, output current and output power.

[0170] In some embodiments, the power conversion device 220 adjusts the output power according to the maximum number. The maximum number of the identification of the power receiving device is less than or equal to 32. Specifically, the charging system 200 charges the battery pack 238 electrically connected to the power receiving device 230. The controller 222 of the power conversion device 220 adjusts the output voltage of the connection port 224 based on the number of power receiving devices 230 connected in the charging system 200. In some embodiments, the maximum output voltage of the connection port 224 is greater than or equal to 60V and less than or equal to 65V. The maximum output current is greater than or equal to 22A and less than or equal to 24A. In some embodiments, the number of power receiving devices 230 is less than or equal to 30. In some embodiments, the maximum number of power receiving devices 230 is less than or equal to 25. In some embodiments, the maximum number of power receiving devices 230 is less than or equal to 15. In some embodiments, the maximum number of power receiving devices 230 can also be 5, 10, 15, 35, 40, 45, 50, or more. In some embodiments, the rated voltage of the battery pack 238 is greater than or equal to 21V and less than or equal to 65V. In some embodiments, the rated voltage of the battery pack 238 is greater than or equal to 40 V and less than or equal to 60 V. In some embodiments, the rated voltage of the battery pack 238 is greater than or equal to 42 V and less than or equal to 56 V. In some embodiments, the rated voltage of the battery pack 238 is greater than or equal to 48 V and less than or equal to 56 V.

[0171] In some embodiments, when the number of power receiving devices is less than or equal to a first preset value, the controller is configured to adjust the maximum output voltage of the connection port to a first voltage threshold. When the number of power receiving devices is greater than or equal to a second preset value, the controller is configured to adjust the maximum output voltage of the connection port to a second voltage threshold. Wherein, the first preset value is less than the second preset value, and the first voltage threshold is less than the second voltage threshold. Specifically, the first preset value is set to 8, and the second preset value is set to 12. The first voltage threshold is set to 60V, and the second voltage preset value is set to 65V. For the first 8 power receiving devices, the maximum output voltage of the power conversion device is set to 60V, and the maximum output current is set to 24A. For the 9th to 12th power receiving devices, the maximum output voltage of the power conversion device is set to 62V, and the maximum output current is set to 23A. For the 13th to 30th power receiving devices, the maximum output voltage of the power conversion device is set to 65V, and the maximum output current is set to 22A.

[0172] In some embodiments, the controller of the power conversion device obtains the input voltage of the power receiving device currently being charged, and when the difference between the above input voltage and the output voltage of the power conversion device is less than the first threshold, the maximum output voltage of the control connection port is the third voltage threshold. The controller of the power conversion device obtains the input voltage of the power receiving device currently being charged, and when the difference between the input voltage and the output voltage of the power conversion device is greater than the second threshold, the maximum output voltage of the control connection port is the fourth voltage threshold. Specifically, the first threshold is set to 2V and the second threshold is set to 4V. The third voltage threshold is set to 60V and the fourth voltage threshold is set to 65V. For example, the power conversion device 220 detects its own output voltage and collects the input voltage of the power receiving device 230 currently being charged. When the difference between the input voltage and the output voltage is less than 2V, the maximum output voltage of the connection port is 60V and the maximum output current is 24A. When the difference between the input voltage and the output voltage is greater than or equal to 2V and less than or equal to 4V, the maximum output voltage of the connection port is 62V and the maximum output current is 23A. When the difference between the input voltage and the output voltage is greater than 4V, the maximum output voltage of the connection port of the power conversion device 220 is set to 65V, and the maximum output current is set to 22A.

[0173] In some embodiments, when the charging system 200 charges one or more battery packs 238 connected to the power receiving device 230, the battery pack with the lowest charge is charged first. When the charge levels of all the battery packs are basically the same, the charging system 200 charges all the battery packs 238 together. In some embodiments, when a low-charge battery pack is newly inserted into the power receiving device 230, the low-charge battery pack is charged first, and the charging of the high-charge battery pack is suspended. In some embodiments, when a battery pack with the same charge level is newly inserted, it is directly added to charge together. In some embodiments, when a high-charge battery pack is newly inserted, it enters a waiting state for charging, and joins the charging when the voltage is charged to the same level. The charging strategy here is for independent power receiving devices 230. For all power receiving devices 230 in the charging system 200, after the power conversion device 220 completes the identification of the multiple power receiving devices 230 connected in cascade, it controls the multiple power receiving devices 230 connected in cascade to charge in the order of physical connection. In some embodiments, the power conversion device 220 specifies an arbitrary charging order based on external input (IOT module or other buttons).

[0174] In some embodiments, the power conversion device 220 recognizes that the power receiving device 230 to be charged is faulty, reports IOT module fault information, and continues to charge the battery pack on the next power receiving device 230 physically connected to the currently faulty power receiving device 230.

[0175] In some embodiments, during the polling process, if the power conversion device 220 identifies that the abnormal power receiving device 230 is waiting to be charged, the power receiving device 230 currently being charged will not be affected, the identity of the faulty power receiving device 230 will be reported, and the abnormal power receiving device 230 will be skipped during sequential charging. After all power receiving devices 230 are charged, the power conversion device 220 re-records the identity of the multiple power receiving devices connected in cascade and reports the fault information.

[0176] In some embodiments, when the power conversion device 220 recognizes that a power receiving device 230 that is being charged appears, it stops charging the power receiving device 230, charges the next physically connected power receiving device 230, and reports the identity of the failed power receiving device 230. After all the power receiving devices 230 are charged, the power conversion device 220 re-records the identities of the multiple power receiving devices connected in cascade, and reports the IOT module fault information. In the process of the charging system performing the charging function, the power conversion device is configured to report the wireless communication module fault information for transmission to the remote device after identifying the power adapter or DC-DC charger fault, while continuing to charge the battery pack on the next physically connected power adapter or DC-DC charger.

[0177] In some embodiments, when the power conversion device 220 identifies that a battery pack on the corresponding power receiving device 230 is faulty, the fault is reported and the charging of the battery pack is prohibited, while the remaining battery packs can be charged normally.

[0178] In some embodiments, when the charging system 200 is in an idle state, the power conversion device 220 will poll the multiple power receiving devices 230 connected in cascade. During the polling process, after the power conversion device 220 identifies an abnormal power receiving device 230, it reports the IOT module fault information and re-records the identity identification of the multiple power receiving devices connected in cascade.

[0179] In some embodiments, the charging system 200 also has a low power consumption mode. Specifically, the power conversion device has a low power consumption mode, and in the low power consumption mode, the power conversion device is configured to exit the low power consumption mode based on the information obtained by the wireless communication module. In some embodiments, the power conversion device 220 will automatically enter the low power consumption mode if it is not charged for two consecutive hours (except for the scheduled charging mode). In the low power consumption mode, the auxiliary power circuit and relay of the power conversion device 220 will be turned off. When the IOT module detects a short press of the button, it sends information to the power conversion device 220, and the power conversion device 220 exits the low power consumption mode. In some embodiments, re-plugging and unplugging the AC plug of the power conversion device 220 can also exit the low power consumption mode. The above-mentioned buttons can be set on the remote device, and of course, can also be set on the power conversion device.

[0180] In some embodiments, the power conversion device 220 includes a wireless communication module 240 configured to communicate with the remote device 400. The wireless communication module 240 includes a Bluetooth module, a WI-FI module (Wireless Fidelity, WI-FI) or a ZigBee module. In some embodiments, the power conversion device 220 specifies an arbitrary charging sequence based on an external input of the remote device 400.

[0181] In some embodiments, the charger aggregates or records the adapter and battery pack information and reports it to the wireless communication module 240, and displays the relevant information on the remote device 400. In some embodiments, the cloud sends an upgrade package to the charging system 200 through the wireless communication module 240, which can realize the OTA upgrade function of the power conversion device 220, the power receiving device 230 and the hanging battery pack.

[0182] In some embodiments, the present application also discloses an electronic combination, including a primary node device and a secondary node device. The primary node device includes a wireless communication module, and the wireless communication module is configured to communicate with a remote device. The primary node device includes a connection port for electrically connecting and communicating with the secondary node device. Each secondary node device includes an electric energy input port and an electric energy output port, which are used to electrically and communicatively connect the secondary node devices in sequence. Among them, the electric energy input port of the first secondary node device is configured to connect to the connection port of the primary node device.

[0183] In some embodiments, the electronic combination further includes a three-level node device. The two-level node device includes a plurality of three-level interfaces, each of which is configured to electrically connect a three-level node device. Among them, the three-level node device is connected to the two-level node device in communication. The three-level node device realizes data transmission with the first-level node device through the second-level node device. Specifically, the first-level node device can be an electric energy conversion device, the second-level node device can be an electric energy receiving device, and the third-level node device can be a battery pack, and the electric energy conversion device charges the battery pack through the electric energy receiving device. In some embodiments, the electric energy conversion device 220 includes at least one of an AC-DC charger, a bidirectional power supply, a DC-DC charger, and a riding vehicle. The electric energy receiving device 230 includes at least one of a device with a battery pack installed and an AC appliance. The device with a battery pack installed includes but is not limited to at least one of a DC-DC charger, a power adapter, a riding vehicle, or an outdoor walking device. Specifically, when the first node device is a riding vehicle, the riding vehicle includes a wireless communication module for wireless communication with a remote device or a cloud. The riding vehicle also includes a communication module for communicating with a power receiving device physically connected thereto. The riding vehicle also includes an energy storage device for charging an energy receiving device physically connected thereto.

[0184] Specifically, the power conversion device 220 is an AC-DC charger, and the power receiving device 230 is a DC-DC charger, a power adapter or a riding vehicle. When the communication data is uplinked, the physical model data of the battery pack is sent to the DC-DC charger, the power adapter, and the DC-DC charger, the power adapter or the riding vehicle is transparently transmitted to the AC-DC charger. The controller of the AC-DC charger then transparently transmits it to the wireless communication module. When the communication data is downlinked, the wireless communication module sends data to the AC-DC charger, the AC-DC charger transparently transmits it to the DC-DC charger or the power adapter, and the DC-DC charger, the power adapter or the riding vehicle then transparently transmits it to the corresponding battery pack. In this way, the functions of sending data or control commands, upgrading equipment at all levels, etc. can be realized.

[0185] In some embodiments, see Fig.26 and Fig. 27As shown, the power conversion device 220 is specifically an AC-DC charger, and the power interface 223 of the AC-DC charger is used to connect an external power source. The connection port 224 of the AC-DC charger is used to connect the power receiving device 230. Specifically, the AC power connected to the power interface 223 passes through the EMI filter circuit 228a and then passes through the rectifier bridge 228b. After being boosted by the PFC circuit 228c, it is input to the full-bridge LLC resonant conversion circuit 228d for voltage reduction. The controller 222 controls the relay 228e to output the voltage to the output terminal 228f, and the output terminal 228f is used to connect the battery pack for charging. The voltage of the PFC circuit 228c is input to the auxiliary power circuit 238g for voltage conversion, thereby powering the fan circuit and the light display circuit 238h, the controller 222, and the wireless communication module 240. The controller 222 is used to control the output voltage and output current of the full-bridge LLC resonant conversion circuit 228d, as well as the communication module and voltage detection module 228m, current detection module 228n, fan circuit and light display circuit 238h and wireless communication module 240.

[0186] In some embodiments, see Fig.28 As shown, the connection port 224 of the AC-DC charger is used to connect the power receiving device 230. Specifically, the power receiving device 230 is a power adapter. The power adapter includes a controller 236, a BUCK circuit 239a, a display circuit 239b, a sampling circuit 239c and a switch circuit 239d. Among them, the BUCK circuit is used to step down the voltage output from the connection port 224 to power the controller 236 and the display circuit 239b. The display circuit 239b is used to display the charge and discharge status or other information such as the remaining power of the battery pack 238. The sampling circuit 239c is used to collect the port voltage and output current of the battery pack 238. The switch circuit 239d is connected to the controller 236 and is triggered by the controller 236 to switch between a closed or open state. When the switch circuit 239d is in a closed state, the power output from the connection port 224 flows into the battery pack 238 to charge the battery pack 238. In some embodiments, the power adapter also includes a communication module 239e and a PWM signal transceiver module 239f. The communication module 239e communicates with the power conversion device 220 via the communication bus 250. The PWM signal transceiver module 239f is connected to the controller 236 and the PWM signal transceiver module of the next power adapter to transmit the PWM signal to the next physically connected power adapter.

[0187] In some embodiments, see Fig.29As shown, the DC-DC charger 233 is used to install the first energy storage device 233a or the second energy storage device 233b. When the DC-DC charger 233 is electrically connected to the charging system 200, it can receive the electric energy output by the electric energy conversion device 220 to charge the first energy storage device 233a or the second energy storage device 233b connected thereto. When the DC-DC charger 233 cannot obtain electric energy from the power supply system 200, the second energy storage device 233b can be charged by the first energy storage device 233a. The DC-DC charger 233 automatically enters the first working mode after being turned on. In the first working mode, the first energy storage device 233a charges the second energy storage device 233b. In the first working mode, the DC-DC charger 233 is connected to the charging system and switches from the first working mode to the second working mode. In the second working mode, the first energy storage device 233a switches from a discharging state to a charging state. In some embodiments, the DC-DC charger 233 also has a switch button, and the switch button response is prohibited in the second working mode. When the second working mode is exited, the user can operate the switch button to make the DC-DC charger 233 enter the first mode. As mentioned above, the second working mode exiting condition includes that the power conversion device 220 has no output or the power conversion device 220 has no input when the AC mode is exited. In this way, the first working mode and the second working mode of the DC-DC charger 233 are managed to ensure the safe charging of the charging system and the battery pack.

[0188] In some embodiments, see Fig.29 As shown, the DC-DC charger 233 includes a Bluetooth module for transmitting the working status and data to the remote device 400. The above data may include the status and data of the connected first energy storage device 233a and the second energy storage device 233b. In some embodiments, the remote device 400 can remotely upgrade the controller and Bluetooth module of the DC-DC charger 233. In some embodiments, the first energy storage device 233a includes a Bluetooth module, and the remote device 400 can remotely upgrade the first energy storage battery pack 233a. In some embodiments, the Bluetooth module of the DC-DC charger 233 can also be used for warehouse management.

[0189] In some embodiments, the switch button on the DC-DC charger 233 has multiple functions. Specifically, long pressing the switch button can turn on the Bluetooth function of the DC-DC charger 233, and short pressing the switch button can respond to enter the first working mode.

[0190] In the present application, the power supply system can also be controlled by a remote device. The user can control the operation of the power supply system through the remote device. Specifically, the power supply system also includes a wireless communication module, which is configured to communicate with the first adapter and the second adapter. When the wireless communication module receives a signal from the remote device, the first adapter and the second adapter charge the energy storage device installed on the first adapter and the energy storage device installed on the second adapter according to the order set by the signal.

[0191] In some embodiments, a user can control the order of charging and discharging of the power receiving device in the power supply system through a remote device. Specifically, the power receiving device includes a plurality of adapters and a DC-DC charger arranged in sequence. Among them, a battery pack is installed on the adapter and the DC-DC charger. Exemplarily, the number of adapters connected in sequence in the charging system is 3, and the number of DC-DC chargers is 2. In order to more clearly illustrate the charging strategy, the adapters are numbered 1, 2, and 3 in sequence. The DC-DC chargers are numbered 1 and 2. After the power supply 10 is connected, the user can select different charging modes on the remote device, such as a sequential charging mode and a rotating charging mode.

[0192] In the sequential charging mode, the user can select a single sequential charging mode or a combined sequential charging mode. When the user selects the single sequential charging mode, the power provided by the power supply 10 first charges the battery pack on the No. 1 adapter. When the battery pack on the No. 1 adapter is fully charged, the battery pack on the No. 2 adapter is charged. When the battery pack on the No. 2 adapter is fully charged, the battery pack on the No. 3 adapter is charged. When the battery pack on the No. 3 adapter is fully charged, the battery pack on the No. 1 DC-DC charger is charged. When the battery pack on the No. 1 DC-DC charger is fully charged, the battery pack on the No. 2 DC-DC charger is charged until the battery pack on the No. 2 DC-DC charger is fully charged. When the user selects the combined sequential charging mode, the power provided by the power supply 10 first charges the battery packs on the No. 1 adapter and the No. 2 adapter at the same time, then charges the battery packs on the No. 3 adapter and the No. 1 DC-DC charger, and finally charges the battery pack on the No. 2 DC-DC charger. Of course, users can also set up the above charging combination by themselves, for example, first charge the battery packs on adapter No. 1, adapter No. 2 and adapter No. 3, and then charge the battery packs on DC-DC charger No. 1 and DC-DC charger No. 2.

[0193] In the rotation charging mode, the user can select a single rotation charging mode or a combined rotation charging mode. When the user selects a single rotation charging mode, the electric energy in the power supply 10 stops charging the battery pack on the No. 1 adapter after the preset time, then stops charging the battery pack on the No. 2 adapter after the preset time, then stops charging the battery pack on the No. 3 adapter after the preset time, then stops charging the battery pack on the No. 1 DC-DC charger after the preset time, then stops charging the battery pack on the No. 2 DC-DC charger after the preset time, then continues to stop charging the battery pack on the No. 1 adapter after the preset time, continues to stop charging the battery pack on the No. 2 adapter after the preset time, and cycles in sequence until all battery packs in the power supply system are fully charged. When the user selects the combined alternating charging mode, the electric energy in the power source 10 first charges the battery packs on the No. 1 adapter, the No. 2 adapter, and the No. 3 adapter for a preset time and then stops charging, then charges the battery packs on the No. 1 DC-DC charger and the No. 2 DC-DC charger for a preset time and then stops charging, and then continues to charge the battery packs on the No. 1 adapter, the No. 2 adapter, and the No. 3 adapter for a preset time and then stops charging, and the cycle continues until all the battery packs are fully charged. Of course, the user can also set the above charging combination by himself, for example, first charge the battery packs on the No. 1 adapter and the No. 2 adapter, and then charge the battery packs on the No. 3 adapter, the No. 1 DC-DC charger, and the No. 2 DC-DC charger. Using the above combined alternating charging mode to charge the battery packs can improve the charging efficiency of the power supply system.

[0194] In some embodiments, the user can set the charging power mode through the remote device. Specifically, you can choose a fast charging mode or a slow charging mode. Of course, the charging power is also set according to demand. For example, the user can set the gear of the charging power. For example, the user can choose the first gear, the second gear, the third gear or other gears, and different gears correspond to different charging powers.

[0195] In some embodiments, the user can also set the life mode of the battery pack through the remote device. Specifically, the user can set the life mode to 100%, 90% or 80%. It is understood that when the life mode of the battery pack is set to 80%, the battery pack will no longer accept the input of electrical energy when the power reaches 80%. Of course, the life mode can also include other gears, such as 70% or others.

[0196] In some embodiments, the user can set a battery pack charging percentage reminder through the remote device. For example, the user hopes to receive a reminder from the remote device when the battery pack reaches 50%. Of course, the above percentage is only set to 50% for illustration, and the user can reasonably set it on the remote device according to actual needs.

[0197] In some embodiments, the user can also make a scheduled charging setting or a timed charging setting through the remote device. For example, the user can charge the preset battery pack or the power receiving device in the power supply system after 1 hour of reservation on the remote device. Of course, the user can also set a timed charging for the power supply system on the remote device, which can avoid the user from repeating operations and improve the convenience and intelligence of the entire power supply system.

[0198] In some embodiments, the remote device has a built-in controller and memory for storing and calculating the total charging power of the power supply system every day, every week, every month or every year. The user can view the above total charging power through the remote device to understand the working status of the entire power supply system. In addition, the remote device can also display the proportion of the charging power output by the solar panel in the total charging power to analyze the utilization rate of solar energy.

[0199] In some embodiments, the user can also select the power receiving device to be charged first through the remote device. For example, the user can set the battery pack with the most power to be charged first through the remote device. Of course, the user can also set the battery pack that is most convenient for the user to take in the power supply system to be charged first.

[0200] Of course, in some embodiments, the user can customize the charging order of the power receiving devices through the remote device, or choose to charge some battery packs.

[0201] In order to improve the user experience and the intelligence of the power supply system, the power supply system also has the functions of full power reminder and fault reminder. Specifically, when the power receiving device in the power supply system is fully charged, the user can receive the full power reminder of the corresponding power receiving device through the remote device. When the power supply system fails, the remote device will display the abnormal problem on the display interface and send a message or call or alarm to remind the user.

[0202] See also Fig.30As shown, the adapter 234c is detachably mounted to the electric driving device 234 provided with the energy storage device 234b. Specifically, the adapter 234c includes an AC input interface 2341c, an AC output interface 2342c, an energy storage device interface 2343c and a bidirectional inverter module 234a. Among them, the AC input interface 2341c is configured to input AC power; the AC output interface 2342c is configured to output AC power; the energy storage device interface 2343c is configured to be electrically connected to the energy storage device 234b; the bidirectional inverter module 234a is electrically connected to the AC input interface 2341c, the AC output interface 2342c and the energy storage device interface 2343c, and the bidirectional inverter template 234a is configured to be able to use the AC power input by the AC input interface 2341c to charge the energy storage device 234b and use the AC output interface 2342c to output the electric energy of the energy storage device 234b. In some embodiments, the AC input interface 2341c is a pin-shaped port. In some embodiments, the AC output interface 2342c is a three-pin socket or a two-pin socket. In some embodiments, the adapter 234c also includes a USB interface for powering a mobile phone or a 4G gateway. In some embodiments, the energy storage device 234b includes at least one battery pack that is detachably connected to the electric driving device. In this embodiment, the output power of the adapter 234c is greater than or equal to 500W and less than or equal to 2000W. The total energy of the energy storage device is greater than or equal to 0.5kW·h and less than or equal to 6kW·h. The electric driving device can be a riding vehicle, such as a riding lawn mower or an all-terrain vehicle. Of course, the electric driving device can also be a push snowplow or a lawn mower. In some embodiments, the electric driving device can also be an electric motorcycle, UTV, motorboat, drone, etc.

[0203] In some embodiments, two electric driving devices can charge each other. The electric driving device includes a main unit; a running wheel group, including running wheels supporting the main unit; a drive assembly, mounted to the main unit, the drive assembly including a motor that drives the running wheels to rotate; an energy storage device, detachably mounted to the main unit, the energy storage device being configured to at least supply power to the motor; a DC interface, electrically connected to the energy storage device, the DC interface being configured to charge the energy storage device when connected to an external power source; the DC interface is also configured to output DC power, and use the power of the energy storage device to charge other electric driving devices. In some embodiments, the external power source is other electric driving devices. In some embodiments, the external power source is a charger. In some embodiments, the DC interface can also charge other devices. Other devices are mobile phones, lighting devices, fans, etc.

[0204] The charging device in the present application has a strong load-carrying capacity and also provides anti-theft design and monitoring for the battery pack installed on the charging device.

[0205] In some embodiments, the charging device includes a housing; a battery pack interface, which is arranged on the housing, and the battery pack interface is configured to be coupled with the battery pack; the charging device also includes an anti-theft device, and the anti-theft device includes a locked state and an unlocked state; when the anti-theft device is in the locked state, the battery pack is restricted within a first distance of the charging device; when the locking device is in the unlocked state, the battery pack can be removed from the charging device. In some embodiments, the anti-theft device is a chain. One end of the anti-theft device is connected to the battery pack and the other end is connected to the charging device. Among them, the first distance is less than or equal to 1 meter. In some embodiments, the first distance is less than or equal to 0.5 meters. The unlocking method of the anti-theft device can also be at least one of fingerprint recognition, mechanical lock, voice control, face recognition, and remote unlocking. The anti-theft device is configured to unlock or lock multiple battery packs installed to the battery pack interface one by one. The anti-theft device is configured to unlock or lock multiple battery packs installed to the battery pack interface at the same time.

[0206] In some embodiments, see Figure 31 to Figure 33 As shown, the charging device 500 includes a housing 510, a battery pack interface 511, which is arranged on the housing 510, and the battery pack interface 511 is configured to be coupled with the battery pack 520. The fixing device 530 is configured to be operated by a user to switch between a first state and a second state. When the fixing device 530 is in the first state, the battery pack 520 is fixed on the charging device 500, and when the fixing device 530 is in the second state, the battery pack 520 can move freely relative to the charging device 500. The charging device 500 also includes a locking device 540, and the locking device 540 includes a locked state and an unlocked state. When the locking device 540 is in the locked state, the fixing device 530 is restricted to the first state; when the locking device 540 is in the unlocked state, the fixing device 530 can be switched to the second state by the user.

[0207] Specifically, a limiting portion 531 is formed on the fixing device 530, and a pawl 541 is provided on the locking device 540. When the locking device 540 is in the locked state, the limiting portion 531 and the pawl 541 abut against each other, and the fixing device 530 cannot be switched from the first state.

[0208] When the user operates the locking device 540 to move in the direction indicated by the arrow a, the limiting portion 531 and the pawl 541 do not contact each other, and the fixing device 530 can be switched from the first state to the second state. When the locking device 540 is in the unlocked state, when the user operates the locking device 540 to move in the direction indicated by the arrow b, the limiting portion 531 and the pawl 541 abut against each other, and the fixing device 530 cannot be switched from the first state to the second state.

[0209] In some embodiments, the locking device 540 is a latch. In some embodiments, the fixing device 530 is a buckle. In some embodiments, the unlocking method of the locking device can also be at least one of fingerprint recognition, mechanical lock, voice control, face recognition and remote unlocking.

[0210] In some embodiments, the locking device or the fixing device is configured to unlock or lock multiple battery packs installed to the battery pack interface one by one. In some embodiments, the locking device or the fixing device is configured to unlock or lock multiple battery packs installed to the battery pack interface at the same time.

[0211] In some embodiments, see Fig.34 and Fig.35As shown, the charging device 500 includes a housing 510; at least one battery pack interface 511, which is arranged on the housing 510, and the battery pack interface 511 is configured to be coupled with a battery pack 520; a first port 512, which is arranged on the housing 510, and the first port 512 is used for inputting current or outputting current; a second port 513, which is arranged on the housing 510, and the second port 513 is used for outputting current or inputting current; the first port 512 and the second port 513 can be used interchangeably; when the first port 512 is configured to input current, the second port 513 is configured to output current; and when the second port 513 is configured to input current, the first port 512 is configured to output current. Specifically, the first port 512 and the second port 513 have the same appearance. In some embodiments, the first port 512 and the second port 513 are symmetrically arranged on both sides of the charging device. In some embodiments, the first port 512 and the second port 513 are arranged on the upper part of the housing 510. In some embodiments, the first port is arranged on the upper part of the housing, and the second port is arranged on the lower part of the housing. In some embodiments, the first port and the second port are arranged on the lower part of the housing. In some embodiments, the voltages of the first port 512 and the second port 513 are substantially the same. In some embodiments, the first port 512 is used to connect the first charging device 500a. The second port 513 is used to connect the second charging device 500b. The first port 512 and the second port 513 have the same structure and can receive current input at different times. The first port 512 and the second port 513 are symmetrically arranged about the center plane 501 of the charging device 500. The first port 512 and the second port 513 are located at the upper part of the charging device 500. Among them, the first port 512 and the second port 513 are connected to other devices through a cable. Specifically, the cable 550 includes a right-angle turn connector 551 and a wire 552. Specifically, the cable 550 includes two right-angle turn connectors connected to both ends of the wire. Sampling such a cable 550 can save installation space when two charging devices are connected. In some embodiments, the charging device 500 also includes a fixing component 560, which is used to fix the charging device 500 to other objects. In some embodiments, the fixing assembly 560 is removably mounted to the housing 510. In some embodiments, the fixing assembly 560 is a quick clip.

[0212] In some embodiments, the charging device includes a first adapter and a second adapter, the first adapter includes: a housing; at least one housing for installing an energy storage device, the first adapter can charge the energy storage device installed in the housing; a first port, arranged in the housing, for connecting the second adapter; the second adapter includes: a housing; at least one housing for installing an energy storage device, the second adapter can charge the energy storage device installed in the housing; a second port, arranged in the housing, for connecting the first adapter; the first port and the second port have the same structure, and the first port and the second port are connected by a cable. The cable can be configured to have different lengths. At least one end of the cable is configured as a right-angle turn connector. One end of the cable can be detached from the first port. One end of the cable can be detached from the second port. In some embodiments, the first adapter and the second adapter are the same. In some embodiments, the first adapter and the second adapter are different. The first adapter also includes a support assembly, which can support the second adapter. The first adapter also includes a fixing assembly, which is used to fix the first adapter to other objects. The first port is arranged at the upper part of the housing of the first adapter.

[0213] In this way, by setting the first port and the second port of the charging device to have the same appearance and be interchangeable, the user experience can be improved, the charging device can be adapted to more spatial application scenarios, and it is convenient for users to install and connect.

[0214] In some embodiments, see Fig.36 and Fig.37 As shown, the charging device 500 includes a housing 510; a first accommodating portion 514, which is disposed on the housing 510 and is configured to install a first energy storage device 521; at least two second accommodating portions 515, which are disposed on the housing 510, and the second accommodating portions 515 are configured to install a second energy storage device 522. The volume of the first energy storage device 521 is greater than the volume of the second energy storage device 522; the first accommodating portion 514 and the at least two second accommodating portions 515 are respectively disposed on both sides of a partition surface 502. When the second accommodating portions are all installed with a second energy storage device and the first accommodating portion is installed with a first energy storage device, the projection width of the first energy storage device on the partition surface is substantially equal to the projection width of all the second energy storage devices on the partition surface.

[0215] In some embodiments, the weight of the first energy storage device 521 is greater than or equal to 9Kg. In one embodiment, the weight of the first energy storage device 521 is greater than or equal to 10Kg, or greater than or equal to 11Kg, or greater than or equal to 12Kg, or greater than or equal to 13Kg, or greater than or equal to 14Kg, or greater than or equal to 15Kg, for example, the weight of the battery pack is 9Kg, 10Kg or 15Kg, etc. The capacity of the first energy storage device 521 is greater than or equal to 20Ah. In one embodiment, the capacity of the first energy storage device 521 is greater than or equal to 30Ah, or the capacity of the first energy storage device 521 is greater than or equal to 40Ah, or the capacity of the first energy storage device 521 is greater than or equal to 50Ah. For example, it can be 20Ah, 30Ah, 40Ah, 50Ah, etc. The ratio of the capacity to weight of the first energy storage device 521 is greater than or equal to 2Ah / Kg, for example, 2Ah / Kg, 4Ah / Kg, 5Ah / Kg, etc. The average discharge current of the first energy storage device 521 is greater than or equal to 30A, for example, it can be 30A, 35A, 40A, etc. The energy of the battery pack 100 is greater than or equal to 2KW·h. In one embodiment, the energy of the first energy storage device 521 is greater than or equal to 3KW·h, or the energy of the first energy storage device 521 is greater than or equal to 4KW·h, or the energy of the first energy storage device 521 is greater than or equal to 5KW·h. For example, the energy of the first energy storage device 521 can be 2KW·h, 3KW·h, 4KW·h, 5KW·h, etc. In one embodiment, the first energy storage device 521 is basically in the shape of a rectangular parallelepiped, and the height of the first energy storage device 521 is greater than or equal to 300mm and less than or equal to 350mm. The length of the first energy storage device 521 is greater than or equal to 300mm and less than or equal to 350mm. In some embodiments, the length of the first energy storage device 521 is greater than or equal to 320mm and less than or equal to 330mm. In some embodiments, the width of the first energy storage device 521 is greater than or equal to 150mm and less than or equal to 200mm. In some embodiments, the width of the first energy storage device 521 is greater than or equal to 170 mm and less than or equal to 180 mm. It should be noted that the height dimension of the first energy storage device 521 is greater than or equal to the length dimension and greater than or equal to the width dimension.

[0216] In some embodiments, the charging device 500 includes a housing 510, a first accommodating portion 514, which is disposed on the housing 510 and is used to install a first energy storage device 521; and a second accommodating portion 515, which is disposed on the housing 510 and is used to install a second energy storage device 522. The weight of the first energy storage device 521 is greater than the weight of the second energy storage device 522. When the charging device 500 is placed on the plane 503, the first energy storage device 521 is inserted into the first accommodating portion 514 along the direction of the first straight line 504, and the angle formed by the first straight line 504 and the plane 503 is greater than or equal to 0 degrees and less than or equal to 60 degrees. In some embodiments, the angle formed by the first straight line 504 and the plane 503 is greater than or equal to 10 degrees and less than or equal to 45 degrees. In some embodiments, the angle formed by the first straight line 504 and the plane 503 is equal to 15 degrees. When the charging device 500 is placed on the plane 503, the first energy storage device 521 is located below the second energy storage device 522 in the up and down direction.

[0217] In some embodiments, the battery pack is connected to the charging device via a cable. Specifically, the charging device includes a socket for adapting to the plug connected to the cable, and the battery pack is provided with a socket for adapting to the plug connected to the cable. In this way, on the one hand, the charging device can be moved relative to the battery pack, making the application scenario more flexible. On the other hand, the charging device is smaller in size, making it more convenient and less expensive to carry, store and transport.

[0218] In some embodiments, see Fig.38 As shown, the charging device 500 further includes a circuit board 570 disposed in the housing 510, and the circuit board 570 is substantially parallel to the bottom surface of the charging device 510. Specifically, the circuit board 570 is at least partially disposed below the first accommodation portion 514 and the second accommodation portion 515 in the up-down direction. A heat dissipation airflow is also formed in the housing 510, and the heat dissipation airflow substantially flows along the long end of the circuit board 570.

[0219] In some embodiments, the charging device 500 may also be provided with a fan, and the airflow generated by the fan is used to dissipate heat for the charging device or the battery pack. In some embodiments, the charging device 500 may also use a coolant for heat dissipation. In some embodiments, the charging device 500 may also be made of a material with better heat dissipation effect, such as a phase change material. In some embodiments, the charging device may also be provided with a hydrogel material with better heat dissipation effect.

[0220] In some embodiments, the charging device 500 includes a housing 510; at least one battery pack interface 511 is disposed on the housing 510, and the battery pack interface 511 is configured to be coupled to the battery pack. The charging device 500 also includes a frame 580, and the housing is accommodated inside the rectangular parallelepiped defined by the frame 580. Specifically, the frame includes or forms a handle for the user to carry. In some embodiments, the frame is made of plastic. In some embodiments, the frame is made of metal. In some embodiments, the battery pack is configured to be inserted from the outside of the rectangular parallelepiped defined by the frame 580 into the inside of the rectangular parallelepiped to be combined with the battery pack interface 511. Specifically, the frame includes a crossbar 581, which is disposed near the partition surface 502. It should be noted that the above-mentioned frame can be understood as a specific embodiment of the support assembly in the present application.

[0221] In some embodiments, see Fig.38 and Fig.39 As shown, the charging device 500 includes a shell 510; at least one battery pack interface 511 is disposed on the shell 510, and the battery pack interface 511 is configured to couple with the battery pack; multiple charging devices 500 can be stacked in a first manner and a second manner, wherein the placement direction of the multiple charging devices in the first manner is different from the placement direction of the multiple charging devices in the second manner. The charging device also includes a frame, and the shell is accommodated inside the rectangular parallelepiped defined by the frame 580. In some embodiments, the frame includes or forms a handle for the user to carry. In some embodiments, the top corners of the frame 580 form a protrusion 583 or a recessed portion 582, and when the frame 580 is stacked, the protrusion and the recessed parts can cooperate and be fixed. Specifically, the charging device is as follows Fig.40 When stacked in the first orientation shown, all battery packs are accessible. Fig.41 When stacked in the second orientation shown, at least some of the battery packs are inaccessible. Fig.45 When stacked in the third orientation shown, only the battery pack on the topmost charging device can be accessed.

[0222] In some embodiments, the charging device 500 further has a power display unit for displaying the power status of the battery pack installed thereon.

[0223] In some embodiments, the charging device 500 includes a housing 510; a first receiving portion 514, disposed on the housing 510, for mounting a first energy storage device 521, the first energy storage device 521 including a plurality of first battery cells; a second receiving portion 515, disposed on the housing 510, for mounting a second energy storage device 522, the second energy storage device 522 including a plurality of second battery cells; the volume of the first battery cell is greater than the volume of the second battery cell. Fig.41As shown, multiple charging devices can be stacked, and when multiple charging devices are stacked on the plane 503, the first battery cell is substantially parallel to the plane 503. In some embodiments, the second energy storage device 522 is inserted into the second accommodating portion 515 along the direction of the second straight line 505, wherein the angle β formed by the second straight line 505 and the plane 503 is greater than or equal to 45 degrees and less than or equal to 80 degrees. In some embodiments, the angle β formed by the second straight line 505 and the plane 503 is greater than or equal to 50 degrees and less than or equal to 70 degrees. In some embodiments, the angle β formed by the second straight line 505 and the plane 503 can be 45°, 50°, 55°, 60°, 65°, 70°, 75°, 80°.

[0224] In some embodiments, see Fig.42 and Fig.43 As shown, the charging system includes multiple charging devices, and multiple charging devices 500 can be stacked through a frame 580. Specifically, the frame 580 can be detachably mounted with wheels 584 and a pull rod 585. When multiple charging devices 500 need to be moved, the wheels and the pull rod are mounted on the frame 580 of the charging device at the bottom layer, so that the charging system can be easily moved. In some embodiments, see Fig.44 As shown, the charging system includes a plurality of charging devices 500 and a cabinet 500c for placing the plurality of charging devices, wherein the cabinet 500c has wheels for easy movement.

[0225] In some embodiments, see Figure 46 to Figure 48 As shown, the charging device 600 includes a shell 601; a mounting portion 602 configured to mount or accommodate an energy storage device; a pull rod assembly 603 mounted to the shell 601; and wheels 604 mounted to the shell 601. When the pull rod assembly 603 is pushed or pulled by a user, the wheels 604 roll to facilitate the user to move the charging device 600.

[0226] In some embodiments, the housing 600 is formed with a housing 607 for installing an energy storage device, and the housing 607 surrounds a space 607a for accommodating the energy storage device. When the energy storage device is placed in the above-mentioned space 607a for charging or discharging, a large amount of heat will be generated. In order to dissipate the heat generated by the energy storage device as quickly as possible, a plurality of heat dissipation holes 607a are provided on the housing 607. The plurality of heat dissipation holes 607a are used to transfer the heat in the housing 607 to the outside of the housing 607.

[0227] In some embodiments, the pull rod assembly 603 includes two parallel extension rods 6031 and a gripping rod 6032 connecting the two extension rods. The extension rods 6031 extend obliquely in a direction away from the energy storage device. In some embodiments, the extension rods 6031 are retractable or foldable, which can meet the storage needs of users.

[0228] In some embodiments, the charging device 600 further includes a bottom support 605. The bottom support 605 is disposed on a side of the housing away from the wheels. When the charging device 600 is placed on the ground plane, the bottom support 605 and the wheels 604 jointly support the charging device 600. When the charging device 600 is pushed and pulled by a user to move on the ground plane, the bottom support 605 is suspended and the wheels 604 support the charging device 600. Specifically, the height of the bottom support 605 is greater than the radius of the wheels 604.

[0229] In some embodiments, the housing 601 is symmetrically distributed about the middle surface 601a, the pull rod assembly 603 and the wheel 604 are located on the same side of the middle surface 601a, and the bottom support member 605 is located on the other side of the middle surface 601a.

[0230] In some embodiments, see Fig.47 As shown, when the charging device 600 is placed on the ground 603b, the angle α formed by the first plane 603a formed by the rod assembly 603 and the ground 603b is greater than or equal to 75° and less than or equal to 90°. In some embodiments, the angle α formed by the first plane 603a formed by the rod assembly 603 and the ground 603b is greater than or equal to 75° and less than or equal to 85°. In some embodiments, the angle α formed by the first plane 603a formed by the rod assembly 603 and the ground 603b can be 80°. In this way, it is more convenient and labor-saving for users to push or pull the charging device.

[0231] In some embodiments, the distance between the two wheels 604 in the left-right direction is greater than or equal to one-half of the width of the housing 601 in the left-right direction. In some embodiments, the distance between the two wheels 604 in the left-right direction is greater than or equal to three-quarters of the width of the housing 601 in the left-right direction. In some embodiments, the distance between the two wheels 604 in the left-right direction is greater than or equal to the width of the housing 601 in the left-right direction.

[0232] In some embodiments, see Fig.49 and Fig.50 As shown, the pull rod assembly 603 includes two parallel extension rods 6031 and a gripping rod 6032 connecting the two extension rods. The extension rod 6031 extends along a first plane 603a, and the gripping rod 6032 extends along a second plane 603c. The angle β formed by the second plane 603c and the first plane 603a is greater than or equal to 0 degrees and less than or equal to 45 degrees.

[0233] In some embodiments, the bottom support member 605 is detachably mounted on the first mounting portion 600a of the housing 601, and the rod assembly 603 is detachably mounted to the second mounting portion 600b of the housing 601. The first mounting portion 600a can also be used to mount the rod assembly 603, and the second mounting portion 600b can also be used to mount the bottom support member 605. In this way, when the user needs to change the placement direction of the charging device 600 for pushing and pulling, the bottom support member 605 and the rod assembly 603 can be easily disassembled or installed and the installation positions can be interchanged, and quick replacement can be achieved without removing the battery pack or disassembling the housing.

[0234] In some embodiments, the charging device includes a first charging device 610 and a second charging device 620. When the first charging device 610 and the second charging device 620 are stacked, the pull rod assembly 603 can be pushed and pulled by the user to facilitate the movement of the first charging device 610 and the second charging device 620. In this way, the placement requirements of the user in different directions can be met. In some embodiments, the pull rod assembly 603, the wheel 604, and the bottom support 605 can be detachably mounted to the housing 601. In some embodiments, the charging device includes a first charging device 610 and a second charging device 620. When the first charging device 610 and the second charging device 620 are stacked, the pull rod assembly can be pushed and pulled by the user to facilitate the movement of the first charging device 610 and the second charging device 620.

[0235] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the above embodiments do not limit the present application in any form, and any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the present application.

Claims

1. A charging device, comprising: case; A mounting portion configured to mount or accommodate an energy storage device; A pull rod assembly mounted to the housing; Wheels, mounted to the housing, when the pull rod assembly is pushed or pulled by a user, the wheels roll to facilitate the user to move the charging device; It is characterized in that When the charging device is placed on the ground, an angle between the first plane formed by the pull rod assembly and the ground is less than or equal to 85°.

2. The charging device according to claim 1, characterized in that: The pull rod assembly comprises two parallel extension rods and a holding rod connecting the two extension rods.

3. The charging device according to claim 2, characterized in that: The extension rod is retractable.

4. The charging device according to claim 2, characterized in that: The extension rod is foldable.

5. The charging device according to claim 1, characterized in that: The charging device also includes a bottom support that is detachably mounted to the housing.

6. The charging device according to claim 5, characterized in that: The height of the bottom support is greater than the radius of the wheel.

7. The charging device according to claim 5, characterized in that: The bottom support member is detachably mounted on a first mounting portion of the shell, and the tie rod assembly is detachably mounted to a second mounting portion of the shell; the first mounting portion can also be used to mount the tie rod assembly, and the second mounting portion can also be used to mount the bottom support member.

8. The charging device according to claim 5, characterized in that: The bottom support member is disposed on a side of the housing away from the wheel.

9. The charging device according to claim 1, characterized in that: The wheels and the pull rod assembly are arranged on the same side of the charging device.

10. The charging device according to claim 1, characterized in that: The charging device comprises a first charging device and a second charging device. When the first charging device and the second charging device are stacked, the pull rod assembly can be pushed and pulled by a user to facilitate moving the first charging device and the second charging device.

11. The charging device according to claim 1, characterized in that: When the charging device is placed on the ground, an angle α formed by the first plane formed by the pull rod assembly and the ground is greater than or equal to 75°.

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