Electric gardening vehicle, electric wheeled vehicle and electric work tool

Abstract

An electric gardening vehicle, an electric wheeled vehicle, and an electric work tool. The electric gardening vehicle comprises a frame body, a traveling mechanism for driving the vehicle to travel, a work mechanism for executing the work function, and an energy source system. The energy source system supplies power to the traveling mechanism and the work mechanism, and the traveling mechanism and the energy source system are mounted on the frame body; the energy source system comprises a first battery pack and a second battery pack, and at least one of the first battery pack and the second battery pack can be dismounted and then connected to another cordless power tool to supply power thereto. The electric gardening vehicle has a power socket, a charger outside the vehicle can charge the battery packs in the vehicle by means of the power socket, the electric gardening vehicle can supply electric power to an external wired electrical device by means of the power socket, and the wired electrical device is electrically connected to the battery packs in the vehicle by means of the power socket.

Description

Electric gardening vehicles, electric wheeled vehicles and electric work tools Technical Field

[0001] This application relates to the field of garden tool technology, specifically to an electric garden work vehicle, an electric wheeled vehicle, and an electric work tool. Background Technology

[0002] With the continuous advancement of technology, electric gardening vehicles and power tools have gradually replaced traditional fuel-powered gardening vehicles and tools. Various types of gardening vehicles and handheld power tools are commonly used in lawns, gardens, farms, construction sites, and other work environments. Conventional power tools are generally divided into three categories: AC corded power tools powered by AC power, DC corded power tools powered by DC power, and cordless power tools powered by rechargeable batteries. AC corded power tools typically use a power cord to connect to an AC power source (such as mains power, power stations, or portable power banks with AC output), while DC corded power tools typically use a power cord to connect to a DC power source (such as backpack battery packs or portable power banks with DC output). In some outdoor scenarios, users may not have or carry a suitable power source for corded power tools, rendering these corded power tools or wired electronic devices unusable and failing to meet the user's needs outdoors. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art, the main objective of this application is to provide an electric gardening vehicle, an electric wheeled vehicle, and an electric work tool.

[0004] To achieve the above objectives, this application adopts the following technical solution:

[0005] On the one hand, this application provides an electric gardening vehicle, including: a frame body, a walking mechanism for driving the vehicle, a working mechanism for performing working functions, and an energy source system, wherein the energy source system supplies power to the walking mechanism and the working mechanism, and the walking mechanism, the working mechanism, and the energy source system are all mounted on the frame body;

[0006] The energy source system includes a first battery pack and a second battery pack, at least one of the first battery pack and the second battery pack being detachably connected to another cordless power tool for power supply.

[0007] The electric gardening vehicle has an electrical socket, an external charger charges the battery pack inside the electric gardening vehicle through the electrical socket, and the electric gardening vehicle supplies power to external electrical devices through the electrical socket. The electrical devices are electrically connected to the battery pack inside the vehicle through the electrical socket.

[0008] Preferably, the electrical device is a corded power tool and / or a corded electronic device; also preferably, the electrical socket is a charging and discharging interface installed on the surface of the vehicle. This interface can be either a female plug or a male plug, neither of which affects the implementation of this solution. The electric gardening vehicle can transport these corded power tools and / or corded electronic devices to the work site / construction site, and provide these devices with matching voltage power when they need to be used.

[0009] Optionally, the vehicle frame body is equipped with a battery compartment, the inner wall of which has multiple electrical connection terminals and a track that can be connected to the battery pack. The first battery pack and the second battery pack are pluggably installed in the battery compartment through the track and provide power to the electric gardening vehicle through the electrical connection of the electrical connection connectors on the battery packs and the electrical connection terminals in the battery compartment.

[0010] Optionally, the first battery pack and the second battery pack are battery packs with different sizes and / or energy densities. Each battery pack includes a housing, multiple battery cells housed within the housing, an electrical connection connector for outputting power, and a circuit board with control circuitry. The circuit board is electrically connected to the battery cells and the electrical connection connector. For cordless power tools, different cordless power tools may use different battery packs. The ability to accommodate multiple battery packs of different specifications within the battery compartment is beneficial for users to adapt to different types of cordless power tools outdoors. That is, outdoor usage environments are complex, and users may use cordless power tools with different voltage platforms. When users need to use these cordless power tools outdoors, they can remove the appropriate battery pack from the electric gardening vehicle and install it as needed. Specifically, the installation of battery packs in the battery compartment may include the following situations: the battery compartment is entirely equipped with battery packs of the first specification; the battery compartment is entirely equipped with battery packs of the second specification; or the battery compartment contains both battery packs of the first and second specifications.

[0011] Optionally, the first battery pack and the second battery pack are battery packs of the same size and / or the same energy density. Battery packs of the same size help reduce the difficulty of charging and discharging management. It should be noted that "first" and "second" are only used to distinguish different battery packs and do not constitute a limitation on the number of battery packs in the battery compartment. More than two battery packs can be installed in the battery compartment. A battery pack, also referred to in some contexts as a "battery stack" or "rechargeable battery," is a power device that is detachably mounted on a tool. In most cases, battery packs are installed on cordless power tools in a pluggable manner.

[0012] Optionally, the electric gardening vehicle has a built-in inverter, which is electrically connected to the battery pack and the electrical socket. The power from the battery pack is converted into AC power by the inverter and output to an external electrical device through the electrical socket. The electrical device is an AC wired device, whose power cord is directly connected to the electrical socket, or the electrical socket is connected to the AC wired device via an AC discharge gun for discharge. The AC discharge gun is a power cord with two interfaces, including a vehicle-side plug for connection to the electric gardening vehicle and an AC socket. It provides physical conversion, allowing the power cord of the AC wired device to connect to the AC socket of the AC discharge gun, thus enabling the electric power from the electric gardening vehicle to be output to the AC wired device through the electrical socket.

[0013] Optionally, the electrical socket of the electric gardening vehicle is electrically connected to a wired power supply device via a power conversion device; wherein, the input end of the power conversion device is connected to the electrical socket, and the output end of the power conversion device is connected to the wired power supply device.

[0014] Optionally, the power conversion device includes an inverter that converts the DC power output from the power socket into AC power and then outputs it to the AC wired power supply device. In this way, without increasing the additional cost of the electric gardening vehicle, users can choose to purchase the power conversion device to power the AC wired power supply device outdoors according to their needs. Thus, users who own the electric gardening equipment do not need to purchase an energy storage power supply to power these AC wired power supply devices.

[0015] Optionally, the power conversion device has a boost module and / or a buck module. The power conversion device converts the DC voltage output from the electrical socket into a DC voltage that matches the DC wired power device, thereby supplying power to the DC wired power device. Specifically, in some cases, the voltage output by the electric gardening vehicle may be greater than or less than the DC voltage required by the DC wired power device. For example, if the voltage of the battery pack in the electric gardening vehicle is 58V and the DC voltage output from the electrical socket is also 58V, but the power device is a 24V DC wired power device, then the power conversion device needs to reduce the 58V voltage to 24V to supply power to the DC wired power device.

[0016] Optionally, the output voltage of the electrical socket of the electric gardening vehicle is the same as the rated voltage required for normal operation of the DC wired power supply. Power can be supplied to the DC wired power supply by electrically connecting the electrical socket and the power supply device through an adapter cable with physical conversion function. One end of the adapter cable is connected to the electrical socket, and the other end is connected to the input terminal of the DC wired power supply device. For example, if the battery packs in the electric gardening vehicle are all 58V and the output voltage of the electrical socket is 58V, and the rated voltage required for normal operation of the DC wired power supply device is also 58V, the output voltage of the electrical socket meets the voltage requirements of the DC wired power supply device. However, because the input terminal of the DC wired power supply device is incompatible with the electrical socket, direct interconnection is not possible. In this case, the adapter cable acts as a physical converter, transmitting the electrical energy output from the electrical socket to the power supply device. Of course, in some cases, the power cord of the DC wired power supply device can also be directly connected to the electrical socket, depending on whether the input interface of the DC wired power supply device's power cord is compatible with the electrical socket.

[0017] Optionally, the electrical socket has a communication terminal, through which the electric gardening vehicle communicates with the charger and / or electrical device to identify whether the product connected to the electrical socket is a charger or an electrical device. When the controller of the electric gardening vehicle determines, based on the signal transmitted from the communication terminal, that the electrical socket is connected to the charger of the electric gardening vehicle, it allows the charger to charge the electric gardening vehicle. When the controller of the electric gardening vehicle determines, based on the signal transmitted from the communication terminal, that the electrical socket is connected to a wired electrical device, it allows the battery pack inside the electric gardening vehicle to discharge through the electrical socket.

[0018] Optionally, the output terminal of the charger and / or the input terminal of the electrical device are electrically connected through the cooperation of an electrical plug and an electrical socket; wherein, the electrical socket also has a voltage signal detection terminal, the electrical plug has a micro switch operably connected to the voltage signal detection terminal, and the surface of the electrical plug has a button for controlling the micro switch to open and / or close. The micro switch is in the open state when the user installs the electrical plug into the electrical socket and when the user removes the electrical plug from the electrical socket.

[0019] Optionally, the electrical socket further includes a first positive connection terminal and a first negative connection terminal, and the electrical plug further includes a second positive connection terminal and a second negative connection terminal. When the electrical plug is connected to the electrical socket, the first positive connection terminal is electrically connected to the second positive connection terminal, and the first negative connection terminal is electrically connected to the second negative connection terminal. The control module of the electric gardening vehicle and / or the charger controls the conduction or deactivation of the positive and negative connection circuit according to the voltage signal detected by the voltage signal detection terminal. The main circuit of the positive and negative connection is equipped with a main switch element that controls the on / off state of the main circuit. The controller controls the opening and closing of the main switch element according to the voltage signal. This avoids sparking due to live contact when the electrical plug is connected to the electrical socket, and prevents potential personal injury from a live plug when the charger plug is unplugged. The voltage signal detected by the voltage signal detection terminal is a handshake signal for the charger and a power supply signal for the control unit of the wired power device. Specifically, when the electric gardening vehicle is connected to the charger, the A+ signal of the electric gardening vehicle is connected to the charger. The A+ signal is a DC high-level voltage, including but not limited to DC3.3V, DC5.5V, DC12V, and DC15V. When the charger's control unit correctly detects the A+ voltage signal, the charger's control unit establishes communication with the control unit of the electric gardening vehicle, and the charger obtains the charging needs of the electric gardening vehicle. When the electric gardening vehicle is connected to a wired load device, the A+ voltage of the electric gardening vehicle is connected to the load device. A+ is a DC high-level voltage, including but not limited to DC3.3V, DC5V, DC12V, and DC15V. The A+ voltage supplies power to the control unit of the wired power device. After the control unit of the wired power device is powered on and started, it establishes communication with the control unit of the electric gardening vehicle.

[0020] Optionally, the electric gardening vehicle has a control circuit for managing the power output of the first and second battery packs. The control circuit includes a control module and a discharge control switch element disposed within it. The control module is communicatively connected to each battery pack. Based on received battery pack information, the control module selectively opens or closes the discharge control switch element to control the discharge sequence of each battery pack. The first and second battery packs are operably connected in parallel to the control module of the electric gardening vehicle. The control module selectively controls the power output of the first and second battery packs through the discharge control switch element. Of course, the first and second battery packs are only used to distinguish different battery packs and do not limit the number of battery packs. A third and fourth battery pack may also exist in the battery compartment. Preferably, multiple battery packs are battery packs with the same voltage, and multiple battery packs are connected in parallel to the main control circuit.

[0021] Optionally, the battery compartment of the electric gardening vehicle can be connected to multiple battery packs in parallel. Each battery pack has a standard voltage greater than 48V. A discharge control switch is installed at the positive terminal of each battery pack to prevent mutual charging between battery packs and to cut off power in case of battery pack failure. The control circuit includes a first circuit branch and a second circuit branch respectively connected to the first battery pack and the second battery pack. Both the first and second circuit branches are equipped with discharge control switches. The control module controls the first circuit branch to conduct to discharge the first battery pack and / or controls the second circuit branch to conduct to discharge the second battery pack via the discharge control switches. The discharge control switching element includes a first MOSFET and a second MOSFET, which are connected in series. Both the first and second MOSFETs include a body diode. The conduction direction of the body diode of the first MOSFET is opposite to that of the body diode of the second MOSFET. The conduction direction of the body diode of the first MOSFET is consistent with the direction of the discharge current, while the conduction direction of the body diode of the second MOSFET is consistent with the direction of the charging current. The second MOSFET acts as the discharge switch in the circuit branch, and the first MOSFET acts as the charging switch in the circuit branch.

[0022] Optionally, each battery pack is connected in series with a current sampling element (sampling resistor, Hall current sensor, or other type of current acquisition device). The control module interacts with each battery pack to obtain information including, but not limited to, voltage, temperature, discharge current, and battery status. When preparing to discharge, the control module first turns on the first MOSFET (charging switch) and second MOSFET connected in series at the positive terminal of the first battery pack with the higher voltage, as well as the second MOSFET (discharge switch) of the second battery pack. During the discharge process in the first discharge embodiment, when the discharge current of the second battery pack exceeds a preset threshold, the first MOSFET (charging switch) of the second battery pack is turned on. At this time, the first and second battery packs simultaneously participate in the discharge until each battery pack is depleted. During the discharge process in the second discharge embodiment, when the voltage of the second battery pack and the voltage of the first battery pack are less than a preset threshold (e.g., ≤100mV), the first MOSFET (charging switch) of the second battery pack is turned on. At this time, the first and second battery packs simultaneously participate in the discharge until each battery pack is depleted.

[0023] Optionally, in another discharge embodiment, the battery pack information received by the control module includes the voltage value information of the battery pack. The control module selectively turns on or off the first MOSFET and / or the second MOSFET on the circuit branch according to the received battery pack voltage value, thereby controlling the discharge sequence of each battery pack. In this embodiment, the control module controls the first battery pack with a higher voltage value in the energy source system to discharge first during the discharge phase. If the voltage difference between the second battery pack and the first battery pack is less than a preset threshold, the control module controls the first battery pack and the second battery pack to discharge simultaneously.

[0024] Optionally, in another discharge embodiment, the battery pack information received by the control module includes the state of charge (SOC) information of the battery pack. The control module selectively turns on or off the first MOSFET and / or the second MOSFET on each battery pack circuit branch according to the received SOC information, thereby controlling the discharge sequence of each battery pack. Specifically, during the discharge phase, the control module controls the first battery pack with the highest SOC in the energy source system to discharge first. If the SOC difference between the second battery pack and the first battery pack is less than a preset threshold, the control module controls the first battery pack and the second battery pack to discharge simultaneously.

[0025] Optionally, in another discharge embodiment, the control module determines the evaluation value of each battery pack based on the collected state parameter information of each battery pack, and then controls at least one battery pack with a higher evaluation value to discharge first. When the voltage of other battery packs exceeds the load bus voltage of the electrical device, the battery packs exceeding the load bus voltage are controlled to discharge together. The state parameter information of the battery packs includes: voltage information, capacity information, charge information, internal resistance information, and health status information; the evaluation value of the battery pack is determined based on at least one state parameter information of the battery pack through weighted summation or weighted average; the at least one battery pack with a higher evaluation value includes the battery pack with the highest evaluation value and all battery packs whose evaluation value is within a preset difference range from the highest evaluation value; the voltage of other battery packs exceeding the load bus voltage of the electrical device can be one battery pack or multiple battery packs; by comparing the battery pack voltage with the load bus voltage and controlling the discharge of multiple battery packs based on the comparison result, balanced discharge of multiple battery packs can be ensured, improving discharge efficiency. Specifically, due to the high-power load of the wired power supply device, the corresponding load bus voltage will be gradually pulled down when the device starts up. During this process, the voltage of other battery packs in the energy source system will exceed the load bus voltage one by one. The control module is configured to control the battery packs that exceed the load bus voltage to discharge simultaneously when the voltage of the battery pack exceeds the load bus voltage of the power supply device.

[0026] Optionally, the control circuit of the electric garden vehicle also includes a bus voltage monitoring component for monitoring the load bus voltage. For the battery pack in the energy source system, when the load bus voltage rises and exceeds the voltage of the battery pack, the control module controls the battery pack that is lower than the load bus voltage to stop discharging in order to protect the battery pack and avoid damage to the battery pack due to over-discharge.

[0027] Optionally, during the period when power is supplied to external electrical devices via the battery pack in the electric gardening vehicle, if a battery pack is added or removed, the control module updates the registry of all battery packs and continues to control discharge based on the updated registry.

[0028] Optionally, the electric gardening vehicle has only one battery pack in its battery compartment, which can power external wired devices via a power outlet. This battery pack is originally designed to power cordless power tools and is detachably installed in the battery compartment. The battery pack can be removed from the battery compartment of the electric gardening vehicle and installed on another cordless power tool (such as a handheld cordless electric garden blower, electric chainsaw, electric trimmer, push lawnmower, etc.).

[0029] Optionally, the working mechanism of the electric gardening vehicle is detachably mechanically connected to the vehicle body. The battery pack is installed on the vehicle body to supply power to the walking mechanism and the working mechanism. The working mechanism includes a working motor and an electrical plug. After the working mechanism is installed on the vehicle body and the electrical plug is connected to the electrical socket, the battery pack and the working motor can be electrically connected. When the electrical plug of the working mechanism is disconnected from the electrical socket of the vehicle body, the charger of the electric gardening vehicle can be connected to the electrical socket to charge the battery pack on the vehicle body. Alternatively, an external wired power device can be connected to the battery pack on the vehicle body through a power cord connected to the electrical socket of the electric gardening vehicle, so that the battery pack of the electric gardening vehicle can be used as the power source for the wired power device.

[0030] Optionally, a power conversion device is also provided between the connection circuit of the wired power device and the power socket, which converts the voltage output by the power socket into AC or DC power that matches the wired power device.

[0031] Optionally, the electric gardening vehicle charger, operating mechanism, and electrical device have terminals that can be adapted to connect to the communication terminals of the electrical socket. The control module of the electric gardening vehicle identifies the type of device connected to the electrical socket based on the signal received by the communication terminals. The communication method between the electric gardening vehicle and the charger, operating mechanism, and electrical device includes at least one of CAN communication, RS485 serial communication, and UART communication.

[0032] Optionally, the control module of the electric gardening vehicle may prohibit the vehicle from moving when it determines that the electrical socket is connected to a non-operating mechanism based on the received signal. This avoids danger caused by misoperation of the electric gardening vehicle during battery charging or wired power discharge. Conversely, the control module may allow the electric gardening vehicle to perform operating and moving functions when it determines that the electrical socket is connected to an operating mechanism based on the received signal.

[0033] Optionally, the electric gardening vehicle is a ride-on lawnmower or a stand-up lawnmower; the operating mechanism is a mowing mechanism, and the operating motor is a cutting motor that drives the cutter blade to rotate.

[0034] On the other hand, this application provides an electric wheeled vehicle, which can be an electric golf cart, an all-terrain vehicle, or an electric motorcycle. Specifically, the electric wheeled vehicle mainly performs walking and transportation functions, and includes a running gear for driving the vehicle and a battery pack, the battery pack supplying power to the running gear; the surface of the vehicle has an electrical socket, through which a charger charges the battery pack inside the vehicle, and the electric wheeled vehicle supplies power to an external wired power device through the electrical socket, the wired power device being electrically connected to the battery pack inside the vehicle through the electrical socket.

[0035] Optionally, the electric wheeled vehicle includes a battery compartment containing multiple battery packs, which are detachably installed within the battery compartment; wherein the battery packs of the electric wheeled vehicle can be detached and connected to other cordless power tools as a power source for those cordless power tools.

[0036] On another front, this application provides an electric work tool, distinct from electric gardening vehicles. The electric work tool is an electric device containing a single-function motor, such as a push lawnmower, an electric trailer, or other handheld electric devices. A push lawnmower only includes a mowing motor, and an electric trailer only includes a drive motor. These electric work tools perform tasks outdoors but do not necessarily include both a drive motor and a cutting motor. The electric work tool includes a frame body, a work motor, and a battery pack that supplies power to the work motor. The work mechanism and the battery pack are mounted on the frame body. The surface of the electric work tool has an electrical socket. A charger charges the battery pack within the electric work tool through the electrical socket, and the electric work tool supplies power to an external wired power device through the electrical socket. The wired power device is electrically connected to the battery pack within the electric work tool through the electrical socket. The work motor is the motor that performs the main working function of the electric work tool, such as the cutting motor of a push lawnmower or the drive motor of an electric trailer.

[0037] The electric gardening vehicle, electric wheeled vehicle, and electric work tool of this invention can serve as a power source for another AC corded power tool, DC corded power tool, or cordless power tool in outdoor working environments, utilizing the DC power from their own battery pack to drive another corded or cordless power tool. Compared to portable power storage devices or generators used as power sources for AC corded or DC corded power tools, the electric gardening vehicle and electric wheeled vehicle can be moved to the work site more conveniently. Furthermore, if the user already owns such a vehicle or corded power tool, there is no need to incur additional costs to purchase a portable power storage device, making power acquisition more convenient.

[0038] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0039] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0040] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 is an exterior view of an electric gardening vehicle as one embodiment;

[0042] Figure 2A is an exterior view of an electric gardening vehicle as one embodiment;

[0043] Figure 2B is an exterior view of an electric gardening vehicle as one embodiment;

[0044] Figure 3 is a schematic diagram of an electric gardening vehicle being charged as an example.

[0045] Figure 4 is a schematic diagram of an electric gardening vehicle being charged, as another embodiment.

[0046] Figure 5 is a schematic diagram of an electric gardening vehicle discharging power as an example.

[0047] Figure 6 is a structural block diagram of an electric gardening vehicle discharging power as an example;

[0048] Figure 7 is a schematic diagram of an electric gardening vehicle discharging power as another embodiment;

[0049] Figure 8A is a perspective view of a cordless power tool;

[0050] Figure 8B is a perspective view of another cordless power tool;

[0051] Figure 9A is an exploded view of a battery pack;

[0052] Figure 9B is an exploded view of a battery pack;

[0053] Figure 10 is a schematic diagram of the electrical socket of an electric gardening vehicle as an example;

[0054] Figure 11 is a schematic diagram of the structure of the circuit management during charging of an electric gardening vehicle as an example;

[0055] Figure 12 is a structural block diagram of the management of the circuit section when the electric gardening vehicle is discharging, as another embodiment;

[0056] Figure 13 is a circuit diagram of a portion of the battery pack control circuit of an electric garden vehicle as an example.

[0057] Figure 14 is a circuit diagram of a portion of the battery pack control circuit of an electric gardening vehicle as another embodiment.

[0058] Figure 15 is a flowchart illustrating the management process of charging an electric garden vehicle as an example.

[0059] Figure 16 is a management flowchart for the discharge of an electric gardening vehicle as another embodiment;

[0060] Figure 17 is a circuit diagram of another part of the battery pack control circuit of an electric garden vehicle as an example.

[0061] Figure 18 is a circuit diagram of another part of the structure of the battery pack control circuit of an electric gardening vehicle as another embodiment.

[0062] Figure 19 is a flowchart of the battery pack management of an electric gardening vehicle as an example;

[0063] Figure 20 is a flowchart of the battery pack management of an electric gardening vehicle as another embodiment;

[0064] Figure 21 is a structural block diagram of an electric gardening vehicle as an example;

[0065] Figure 22 is a structural block diagram of an electric gardening vehicle as another embodiment;

[0066] Figure 23 is a structural block diagram of an electric gardening vehicle as yet another embodiment;

[0067] Figure 24 is a perspective view of an electric wheeled vehicle as an example;

[0068] Figure 25 is a perspective view of an electric gardening vehicle as another embodiment;

[0069] Figure 26 is a perspective view of an electric work tool as yet another embodiment;

[0070] Figure 27 is a perspective view of a wired power supply device as an example;

[0071] Figure 28 is a perspective view of a wired power supply device as another embodiment;

[0072] Figure 29 is a perspective view of an electric gardening vehicle with a modular operating mechanism as an example. Detailed Implementation

[0073] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0074] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0075] Figures 1-7 and 21-23 show a perspective view of an electric gardening vehicle 100, specifically an electric ride-on lawnmower. The electric gardening vehicle 100 includes a walking mechanism 101, an operating mechanism 102, an energy source system 103, and a frame body 110. The frame body 110 is a frame structure, which is also referred to as the mounting body in some scenarios.

[0076] The walking mechanism 101, the working mechanism 102, and the energy system 103 are all mounted on the vehicle frame body 110.

[0077] Specifically, the walking mechanism 101 includes a walking motor 1011 and a walking component 1012, wherein the walking motor 1011 is electrically connected to the energy source system 103, and the walking component 1012 is drivably connected to the walking motor 1011. Those skilled in the art will understand that the walking component 1012 can be implemented as a walking wheel, a walking track, or other mechanism capable of moving the vehicle frame body 110.

[0078] The working mechanism 102 can be implemented as a lawn mowing mechanism, sweeping mechanism, or other working mechanism capable of performing gardening operations in one embodiment, but the present invention is not limited in this respect. Those skilled in the art will understand that, in a preferred embodiment, the working mechanism 102 is electrically connected to the energy source system 103 so that the energy source system 103 can provide electrical energy to the working mechanism 102; however, this is not mandatory. In other words, when the electric gardening vehicle is a hybrid vehicle, the energy source of the working mechanism 102 can come from the mechanical energy generated by the engine.

[0079] Referring to Figures 1 and 2, the energy source system 103 includes a battery pack. In a preferred embodiment, the energy source system includes at least two battery packs, namely a first battery pack 10301 and a second battery pack 10302, wherein at least one of the first battery pack 10301 and the second battery pack 10302 is mounted on the vehicle frame body 110.

[0080] Preferably, at least one of the battery packs, such as at least one of the first battery pack 10301 and the second battery pack 10302, is detachably mounted to the frame body 110. More preferably, the first battery pack 10301 and the second battery pack 10302, which are detachable from the frame body 110, are configured to be directly powered by a cordless power tool 107, as shown in Figures 8A and 8B, which illustrate a schematic diagram of the first battery pack 10301 being detached from the electric gardening vehicle 100 and pluggably mounted onto the cordless power tool 107 as a power source for the cordless power tool.

[0081] Preferably, the vehicle frame body 110 is provided with a battery compartment 1030, and at least one of the first battery pack 10301 and the second battery pack 10302 is pluggably installed in the battery compartment 1030. In this way, at least one of the first battery pack 10301 and the second battery pack 10302 is not only detachably installed in the battery compartment 1030, but can also be limited by the battery compartment 1030.

[0082] More preferably, referring to FIG2B, the battery compartment 1030 also forms a track that cooperates with the battery pack and at least one electrical connection terminal 2033 disposed in the battery compartment 1030 for connecting to the overall circuitry. When the battery pack needs to be placed in the battery compartment 1030, the track can guide the battery pack into the battery compartment 1030. After the battery pack is installed, the electrical connection terminal 1033 on the battery pack can be electrically connected to the electrical connection terminal 2033 in the battery compartment 1030, thereby supplying power to the electric gardening vehicle. Similarly, when the user needs to disassemble the battery pack, he only needs to pull the battery pack out of the battery compartment 1030. In this way, not only can the battery pack be separated from the frame body 110, but the conductive part on the battery pack can also be disconnected from the electrical connection terminal 2033 in the battery compartment 1030.

[0083] It will be understood by those skilled in the art that the number of battery packs is merely an example made so that those skilled in the art can understand the present invention, and the battery packs naturally include the third battery pack 10303, the fourth battery pack 10304, the fifth battery pack 10305, and the sixth battery pack 10306, and the present invention is not limited in this respect.

[0084] It is worth mentioning that the battery pack includes at least two battery packs with different energy densities and / or specifications. For example, the first battery pack 10301 and the second battery pack 10302 have different sizes and energy densities. This allows users to take out different battery packs to adapt to different cordless power tools 107 outdoors. That is, when users need to use these cordless power tools 107 outdoors, they can take out the battery pack compatible with the tool from the battery compartment 1030 of the electric gardening vehicle 100 as needed.

[0085] Referring to Figure 9B, those skilled in the art will understand that each of the battery packs includes a housing 1031, a plurality of battery cells 1032 installed in the housing, an electrical connection connector 1033 for outputting electrical energy, and a circuit board 1034 having a control circuit, wherein the circuit board 1034 is electrically connected to the battery cells 1032 and the electrical connection connector 1033.

[0086] It is worth mentioning that the electric gardening vehicle 100 also includes at least one electrical socket 104, wherein the electrical socket 104 is electrically connected to the battery pack, that is, it can be electrically connected to the first battery pack 10301 and / or the second battery pack 10302.

[0087] Referring to Figure 3, the electrical socket 104 is configured as a charger 105 that can be electrically connected to an external source to charge the battery pack electrically connected to the electrical socket 104, the battery pack being disposed within the battery compartment 1030. Alternatively, referring to Figure 4, the electric gardening vehicle 100 has a built-in charger, and the electric gardening vehicle directly connects to an external power source via the electrical socket 104 to charge the battery pack within the vehicle's premises.

[0088] Referring to Figures 5 and 7, preferably, the electrical socket 104 is also configured to be electrically connected to an external electrical device 106, so that the battery pack can supply power to the electrical device 106 via the electrical socket 104. The electrical device 106 includes an AC wired electrical device 1061 and a DC wired electrical device 1062. That is, the battery pack of the electric gardening vehicle 100 can supply power to the external electrical device 106 and receive electrical energy from the external power source via the charger 105 through the electrical socket 104, thereby realizing simultaneous charging and discharging and simplifying the discharge-related structure.

[0089] It is worth mentioning that, as an example, the electrical device 106 is a corded power tool and / or a corded electronic device; preferably, the electrical socket 104 is a charging and discharging interface provided on the surface of the frame body 110, which can be either a female plug or a male plug, neither of which affects the implementation of this solution.

[0090] Referring to Figure 5, preferably, the electric gardening vehicle 100 further includes a power conversion device 108, wherein the power conversion device 108 is electrically connected to the electrical socket 104. In one embodiment, the power conversion device 108 is detachably electrically connected to the electrical socket 104.

[0091] It is worth mentioning that the power conversion device 108 is configured to convert the direct current output by the battery pack into alternating current, and the power conversion device 108 includes at least one inverter. In this way, when the power user 106 is an AC-type wired power user 1061, the battery pack can still supply power to the power user 106, as shown in Figure 5.

[0092] In a preferred embodiment, the electrical socket 104 of the electric gardening vehicle 100 is connected to the power device 106 via an AC discharge gun. The AC discharge gun has a conductive terminal and an AC socket at both ends. The conductive terminal at one end is electrically connected to the electrical socket 104, and the AC socket at the other end is electrically connected to the AC wired power device 106.

[0093] In one embodiment, the power conversion device 108 is disposed on the vehicle frame body 110. Preferably, the power conversion device 108 is electrically connected to the power socket 104 and the battery pack in an activating and deactivating manner, so that when the power conversion device 108 is activated, the electric gardening vehicle 100 can output AC power through the power socket 104, and when the power conversion device 108 is deactivated, the electric gardening vehicle 100 can output DC power through the power socket 104 to power the wired DC power supply device 106.

[0094] In one embodiment, the electric gardening vehicle 100 has an external power conversion device 108 connected to its power socket 104. The input end of the power conversion device 108 is connected to the power socket 104, and the output end of the power conversion device is connected to a wired power supply device.

[0095] Preferably, the power conversion device 108 includes at least one boost module and / or buck module. The boost module and / or buck module are electrically connected to the power socket 104 to boost or buck the DC voltage output from the power socket 104, thereby supplying power to the external DC wired power device 106.

[0096] In some cases, the voltage output by the electric gardening vehicle 100 may be greater than or less than the DC voltage required by the DC wired power supply device 106. For example, if the voltage of the battery pack in the electric gardening vehicle 100 is 58V and the DC voltage output by the power socket 104 is also 58V, while the power supply device 106 is a 24V DC wired power supply device 106, then the 58V voltage needs to be reduced to 24V through the boost module and / or buck module of the power conversion device 108 to supply the DC wired power supply device 106.

[0097] Optionally, the voltage at the output terminal of the electrical socket 104 of the electric gardening vehicle 100 is the same as the voltage required for the DC wired power supply device 106 to operate normally. By using an adapter cable with physical conversion function, the electrical socket 104 and the DC wired power supply device 106 can be electrically connected to supply power to the power supply device 106, as shown in Figure 7.

[0098] One end of the adapter cable is adapted to connect to the electrical socket 104, and the other end is adapted to connect to connect to the input terminal of the power device 106. For example, the battery packs in the electric garden vehicle 100 are all 58V battery packs, and the output voltage of the electrical socket 104 is 58V. The DC-type power device 106 also requires a DC voltage of 58V to operate normally. The output voltage of the electrical socket 104 meets the needs of the power device. However, since the input terminal of the DC-type power device 106 cannot be directly matched and connected to the electrical socket 104, the adapter cable has a physical conversion function, which can transmit the electrical energy output from the electrical socket 104 to the power device 106. Of course, in some cases, the power cord of the DC-type power device 106 can also be directly adapted and connected to the electrical socket 104, depending on whether the input interface of the DC-type power device 106's power cord matches the electrical socket.

[0099] Preferably, the power conversion device 108 connected to the power socket 104 has an inverter unit. The power conversion device 108 converts the DC power output from the power socket 104 into AC power and sends it to the power-consuming device 106, which is an AC wired electronic device.

[0100] Referring to Figure 10, in one embodiment, the electrical socket 104 has communication terminals CAN H and CAN L. The electric gardening vehicle 100 communicates with the charger 105 or the electrical device 106 through the communication terminals and collects relevant electrical parameters of the charger 105 or the electrical device 106 connected to the electrical socket 104. When the controller of the electric gardening vehicle 100 determines, based on the signal transmitted through the communication terminals, that the electrical socket 104 is connected to the charger 105 of the electric gardening vehicle 100, then the charger 105 is allowed to charge the electric gardening vehicle 100. When the controller of the electric gardening vehicle 100 determines, based on the signal transmitted through the communication terminals, that the electrical socket 104 is connected to the electrical device 106, then the battery pack inside the electric gardening vehicle 100 is allowed to discharge.

[0101] It is worth mentioning that the communication method between the communication terminal of the electrical socket 104 of the electric gardening vehicle 100 and the charger 105 or the electrical device 106 includes, but is not limited to, at least one of CAN communication, RS485 serial communication, and UART communication; when the vehicle's control module determines, based on the received communication signal, that the electrical socket is connected to a non-operating mechanism, the electric gardening vehicle is prohibited from moving, thus avoiding safety hazards caused by the vehicle moving while the vehicle is supplying power to an external electrical device or the charger is charging the vehicle.

[0102] Referring to Figures 10-12, in one embodiment, the output terminal of the charging device 105 and / or the input terminal of the load device 106 are electrically connected to the electrical socket 104 via an electrical plug. The electrical socket 104 also has a voltage signal detection terminal. The electrical plug contains a microswitch operably connected to the voltage signal detection terminal. The surface of the electrical plug has a button for controlling the microswitch to open and / or close. The microswitch is in an open state during the time the user installs the electrical plug into the electrical socket 104 and during the time the user removes the electrical plug from the electrical socket. This ensures the user's electrical safety when the output terminal of the charger 105 and / or the input terminal of the electrical device 106 are electrically connected to or disconnected from the electrical socket 104.

[0103] Referring to Figures 10 to 16, optionally, the electrical socket 104 further has a first positive connection terminal and a first negative connection terminal, and the electrical plug at the output end of the charger 105 and / or the input end of the electrical device 106 has a second positive connection terminal and a second negative connection terminal. When the electrical plug is connected to the electrical socket 104, the first positive connection terminal is electrically connected to the second positive connection terminal, and the first negative connection terminal is electrically connected to the second negative connection terminal. The control module of the electric gardening vehicle 100 and / or the charger 105 controls the conduction or shutdown of the positive and negative connection circuit according to the voltage signal detected by the voltage signal detection terminal. The main circuit of the positive and negative connection is provided with a main switch element for controlling the on and off of the circuit, and the control module controls the opening and closing of the main switch element according to the voltage signal.

[0104] This avoids arcing due to live contact when the plug is connected to the socket 104, and avoids personal injury caused by the plug being live when the plug of the charger 105 is unplugged; the voltage signal detected by the voltage signal detection terminal is a handshake signal for the charger 105, and a power supply signal for the control unit of the power device 106.

[0105] Referring to Figures 13, 14, and 18, in one embodiment, the controller of the electric gardening vehicle 100 includes a control circuit that manages the power output of the first battery pack 10301 and the second battery pack 10302. The control circuit includes a control module and a discharge control switch element disposed in the control circuit. The control module is communicatively connected to each of the battery packs. The control module selectively turns the discharge control switch element on or off according to the received battery pack information, thereby controlling the discharge sequence of each battery pack. The first battery pack 10301 and the second battery pack 10302 are operably connected in parallel to the control module of the electric gardening vehicle 100. The control module selectively controls the power output of the first battery pack 10301 and the second battery pack 10302 through the discharge control switch element.

[0106] Of course, the first battery pack 10301 and the second battery pack 10302 are only for distinguishing different battery packs and do not limit the number of battery packs. Referring to FIG17, in one embodiment, the third battery pack 10303 and the fourth battery pack 10304 may also exist in the battery compartment 1030; preferably, the multiple battery packs are battery packs with the same voltage, and the multiple battery packs are connected in parallel on the main control circuit.

[0107] In one embodiment, multiple battery packs can be connected to the battery compartment 1030 of the electric gardening vehicle 100. The multiple battery packs are connected in parallel. Each battery pack has a standard voltage greater than 48V. A switch is provided at the positive terminal of each battery pack to prevent mutual charging between battery packs and to disconnect the battery pack in case of failure.

[0108] As shown in Figures 13 and 14, the control circuit includes a first circuit branch and a second circuit branch that are respectively connected to the first battery pack 10301 and the second battery pack 10302. Both the first circuit branch and the second circuit branch are provided with discharge control switching elements. The control module controls the first circuit branch to conduct through the discharge control switching elements to discharge the first battery pack and / or controls the second circuit branch to conduct to discharge the second battery pack.

[0109] As shown in Figure 13, the discharge control switch element includes a first MOSFET G2 and a second MOSFET G1, which are connected in series. Both the first MOSFET G2 and the second MOSFET G1 include a body diode. The conduction direction of the body diode of the first MOSFET G2 is opposite to that of the body diode of the second MOSFET G1. The conduction direction of the body diode of the first MOSFET G2 is consistent with the direction of the discharge current, and the conduction direction of the body diode of the second MOSFET G1 is consistent with the direction of the charging current. The second MOSFET G1 is the discharge switch in the circuit branch, and the first MOSFET G2 is the charging switch in the circuit branch.

[0110] Optionally, each of the battery packs is connected in series with a current sampling element R1 / R2 (sampling resistor, Hall current sensor, or other type of current acquisition device). The control module is electrically connected to each of the battery packs and acquires the electrical parameter information of each battery pack, including but not limited to voltage, temperature, discharge current, and battery status information. When preparing to discharge, the control module first turns on the first MOSFET and the second MOSFET connected in series at the positive terminal of the first battery pack 10301 (which has a higher voltage) and the second MOSFET of the second battery pack 10302 (discharge switch). In one discharge example, when the discharge current of the second battery pack 10302 exceeds a preset threshold, the first MOSFET (charging switch) of the second battery pack 10302 is turned on. At this time, the first battery pack 10301 and the second battery pack 10302 participate in the discharge simultaneously until the charge of each battery pack is completely discharged. In the second discharge example, when the voltage of the second battery pack 10302 and the voltage of the first battery pack 10301 are less than a preset threshold (e.g., ≤100mV), the first MOSFET (charging switch) of the second battery pack 10302 is turned on. At this time, the first battery pack 10301 and the second battery pack 10302 participate in the discharge simultaneously until the charge of each battery pack is completely discharged.

[0111] Optionally, in another discharge embodiment, the battery pack information received by the control module includes the voltage value information of the battery pack. The control module selectively turns on or off the first MOSFET and / or the second MOSFET on the circuit branch according to the received battery pack voltage value, thereby controlling the discharge sequence of each battery pack. In this embodiment, the control module controls the first battery pack with a higher voltage value in the energy source system to discharge first during the discharge phase. If the voltage difference between the first battery pack 10301 and the second battery pack 10302 is less than a threshold, the control module controls the first battery pack 10301 and the second battery pack 10302 to discharge simultaneously.

[0112] Optionally, in another discharge embodiment, the battery pack information received by the control module includes the state of charge (SOC) information of the battery pack. The control module selectively turns on or off the first MOSFET and / or the second MOSFET on each battery pack circuit branch according to the received SOC information, thereby controlling the discharge sequence of each battery pack. Specifically, during the discharge phase, the control module controls the first battery pack 10301 with the highest SOC in the energy source system 103 to discharge first. If the SOC difference between the first battery pack 10301 and the second battery pack 10302 is less than a threshold, the control module controls the first battery pack 10301 and the second battery pack 10302 to discharge simultaneously.

[0113] Referring to Figure 19, in another discharge embodiment, the control module determines the evaluation value of each battery pack based on the collected state parameter information of each battery pack. Then, it controls at least one battery pack with a higher evaluation value to discharge first. When the voltage of other battery packs exceeds the load bus voltage of the electrical device, it controls all battery packs exceeding the load bus voltage to discharge together. The state parameter information of the battery packs includes: voltage information, capacity information, charge information, internal resistance information, and health status information.

[0114] Referring to Figure 20, in one example, the evaluation value of the battery pack is determined by weighted summation or weighted average based on at least one state parameter information of the battery pack; at least one or more battery packs with higher evaluation values ​​include the battery pack with the highest evaluation value and all battery packs whose evaluation values ​​are within a preset difference range from the highest evaluation value; the voltage of other battery packs exceeding the load bus voltage of the electrical device can be one or more battery packs; by comparing the battery pack voltage with the load bus voltage and controlling the discharge of multiple battery packs based on the comparison result, it is possible to ensure that the multiple battery packs discharge evenly and improve the discharge efficiency.

[0115] Specifically, due to the high-power load of the electrical device 106, the corresponding load bus voltage will be gradually pulled down when the device is started. During this process, the voltage of the other battery packs in the energy source system 103 will exceed the load bus voltage one by one. The control module is configured to control the battery pack to discharge when the voltage of the battery pack exceeds the load bus voltage of the electrical device.

[0116] Optionally, the control circuit of the electric gardening vehicle 100 further includes a bus voltage monitoring component for monitoring the load bus voltage. For the battery pack of the energy source system 103, when the load bus voltage rises and exceeds the voltage of the battery pack, the control module controls the battery pack that is lower than the load bus voltage to stop discharging, so as to protect the battery pack and avoid over-discharge from damaging the battery pack.

[0117] Optionally, during the period when the battery pack in the electric gardening vehicle 100 supplies power to the external electrical device 106, if a battery pack is added or removed, the control module updates the battery pack registry and continues to perform discharge control based on the updated registry.

[0118] It is worth mentioning that, in another embodiment, the electric gardening vehicle 100 includes only one battery pack, which can be electrically connected to the external power supply device 106. Also preferably, the battery pack is detachably mounted to the vehicle frame body 110, as in one embodiment described above, and is detachably mounted to the battery compartment 1030.

[0119] Those skilled in the art will understand that the electrical device 106 can be implemented as an electric device, such as a handheld electric garden blower, an electric chainsaw, an electric trimmer, a push lawnmower, etc.

[0120] Referring to Figure 29, in another embodiment, the working mechanism 102 is detachably mounted on the frame body 110 of the electric gardening vehicle 100. The working mechanism can be a snow-sweeping mechanism 102a with a snow-sweeping function, a lawn-mowing mechanism 102b with a lawn-cutting function, or a blower mechanism 102c with a blower function. Especially when the working mechanism 102 needs to be powered by the battery pack, the working mechanism 102 also includes a conductive component, such as an electrical wire with a plug, wherein the conductive component is connected to the power socket 104 on the electric gardening vehicle through the electrical plug to supply power to the working mechanism 102.

[0121] Furthermore, when the conductive component of the working mechanism 102 is disconnected from the electrical socket 104 on the vehicle body, the electric gardening vehicle 100 can charge the battery pack inside the vehicle through the connection between the charger 105 and the electrical socket 104, or the external electrical device can be electrically connected to the battery pack through the electrical socket 104, so that the battery pack on the vehicle body can be used as the power source for the electrical device 106. At this time, the electric gardening vehicle 100 is equivalent to a portable power source.

[0122] Referring to Figure 24, in one embodiment, the electric gardening vehicle 100 is implemented as an electric wheeled vehicle that does not include the operating mechanism 102, such as an electric golf cart, an all-terrain vehicle, or an electric motorcycle.

[0123] In one embodiment, when the controller of the electric gardening vehicle determines, based on the received signal, that a charger and / or electrical device is connected to the electrical socket, the electric gardening vehicle is prohibited from moving; when the controller of the electric gardening vehicle determines, based on the received signal, that a working mechanism is connected to the electrical socket, the electric gardening vehicle is allowed to move.

[0124] As shown in Figure 26, an electric work tool, exemplarily a push lawnmower, includes a frame body, a working mechanism, and a battery pack. The working mechanism includes a working motor. The working mechanism and the battery pack are disposed on the frame body, and the battery pack supplies power to the working motor. The surface of the electric work tool has an electrical socket. The charger of the electric work tool charges the battery pack inside the tool through the electrical socket, and the electric work tool supplies power to an external electrical device through the electrical socket. The electrical device is electrically connected to the battery pack inside the electric work tool through the electrical socket.

[0125] This application provides a computer-readable storage medium storing computer-executable instructions configured to perform the battery control method for electric garden vehicles described in the above embodiments.

[0126] This application provides a computer program product, which includes a computer program stored on a computer-readable storage medium. The computer program includes program instructions, which, when executed by a computer, cause the computer to perform the battery control method for electric vehicles described above.

[0127] The aforementioned computer-readable storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0128] The technical solutions of this application embodiment can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes one or more instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in this application embodiment. The aforementioned storage medium can be a non-transitory storage medium, including: USB flash drive, portable hard drive, read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk, and other media capable of storing program code; it can also be a transient storage medium.

[0129] The foregoing description and accompanying drawings fully illustrate embodiments of this application to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the terminology used in this application is for describing embodiments only and is not intended to limit the claims. As used in the description of embodiments and claims, the singular forms “a,” “an,” and “the” are intended to equally include the plural forms unless the context clearly indicates otherwise. Similarly, the term “and / or,” as used herein, means including one or more of the associated listed items and all possible combinations thereof. Additionally, when used in this application, the term "comprise" and its variations "comprises" and / or "comprising" refer to the presence of stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, or apparatus that includes said element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.

[0130] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0131] The methods and products (including but not limited to devices and equipment) disclosed in the embodiments herein can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of units may be merely a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to implement this embodiment according to actual needs. In addition, the functional units in the embodiments of this application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0132] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than that shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks may also occur in a different order than disclosed in the description; sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. Each block in a block diagram and / or flowchart, and combinations of blocks in a block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

[0133] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. An electric gardening vehicle, characterized in that, include: The vehicle includes a frame body, a traveling mechanism for driving the vehicle, a working mechanism for performing work functions, and an energy source system. The energy source system supplies power to the traveling mechanism and the working mechanism. The traveling mechanism, the working mechanism, and the energy source system are mounted on the frame body. The power source system includes a first battery pack and a second battery pack, at least one of the first battery pack and the second battery pack being allowed to be detached and connected to another cordless power tool for power supply. The electric landscaping vehicle has an electrical socket, an external charger that allows the battery pack inside the vehicle to be charged via the electrical socket, and the electric landscaping vehicle can supply power to external electrical devices that are electrically connected to the battery pack inside the vehicle via the electrical socket.

2. The electric gardening vehicle according to claim 1, characterized in that, The first battery pack and the second battery pack are battery packs with different sizes and / or energy densities. The battery pack includes a housing, a plurality of cells housed in the housing, an electrical connection connector for outputting electrical energy, and a circuit board with control circuitry. The circuit board is electrically connected to the cells and the electrical connection connector, respectively.

3. The electric gardening vehicle according to claim 2, characterized in that, The main body of the vehicle frame is equipped with a battery compartment. The inner wall of the battery compartment has multiple electrical connection terminals and rails that connect with the battery pack. The first battery pack and the second battery pack are pluggably installed in the battery compartment through the rails and supply power to the electric gardening vehicle through the electrical connection of the electrical connection connectors and the electrical connection terminals.

4. The electric gardening vehicle according to claim 1, characterized in that, The electric gardening vehicle includes a power conversion device, which includes an inverter unit module. The power conversion device is electrically connected to the battery pack and the electrical socket. The DC power from the battery pack is converted into AC power by the inverter unit module and output to an external electrical device through the electrical socket. The electrical device is a wired AC electronic device.

5. The electric gardening vehicle according to claim 1, characterized in that, The electrical socket is externally connected to a power conversion device. The input end of the power conversion device is connected to the electrical socket, and the output end of the power conversion device is electrically connected to the electrical device.

6. The electric gardening vehicle according to claim 5, characterized in that, The power conversion device has a boost module and / or a buck module. The power device is a DC-powered wired electronic device. The power conversion device modulates the DC power output from the power socket into DC power that matches the power device and outputs it to the power device.

7. The electric gardening vehicle according to claim 5, characterized in that, The power conversion device includes an inverter unit module, and the power-consuming device is a wired AC electronic device. The power conversion device converts the DC power output from the power socket into AC power and outputs it to the power-consuming device.

8. The electric gardening vehicle according to claim 1, characterized in that, The electrical device is a wired electronic device powered by DC. The electrical socket outputs DC power and allows connection to the electrical device via a power cord. The electrical energy of the first battery pack and / or the second battery pack is output to the electrical device through the electrical socket.

9. The electric gardening vehicle according to claim 1, characterized in that, The electrical socket includes a communication terminal. The charger and / or electrical device of the electric gardening vehicle are connected to the control module inside the electric gardening vehicle through the communication terminal. The control module inside the vehicle identifies the type of product connected to the electrical socket based on the received communication signal.

10. The electric gardening vehicle according to claim 1, characterized in that, The charger and / or the electrical device are connected to the electrical socket on the electric gardening vehicle via an electrical plug. The electrical socket has a voltage signal detection terminal. The electrical plug has a micro switch operably connected to the voltage signal detection terminal inside. The surface of the electrical plug has a button that controls the micro switch to open and / or close. The button is actuated during the operation of installing the electrical plug into the electrical socket and during the operation of removing the electrical plug from the electrical socket to control the micro switch to be in the open state.

11. The electric gardening vehicle according to claim 10, characterized in that, The electrical socket also has a first positive connection terminal and a first negative connection terminal, and the electrical plug also has a second positive connection terminal and a second negative connection terminal; when the electrical plug is connected to the electrical socket, the first positive connection terminal is connected to the second positive connection terminal, and the first negative connection terminal is connected to the second negative connection terminal; the control module of the electric gardening vehicle and / or the charger controls the conduction or shutdown of the positive and negative connection circuit according to the voltage signal detected by the voltage signal detection terminal.

12. The electric gardening vehicle according to claim 1, characterized in that, The electric gardening vehicle has a control circuit for managing the power output of the first battery pack and the second battery pack. The control circuit includes a control module and a discharge control switch element disposed in the control circuit. The control module is communicatively connected to the battery pack. The control module selectively turns the discharge control switch element on or off according to the received battery pack information, thereby controlling the discharge sequence of the multiple battery packs.

13. The electric gardening vehicle according to claim 12, characterized in that, The battery pack information received by the control module includes the voltage values ​​of the battery packs. The control module selectively opens or closes the discharge control switching elements based on the received voltage values ​​of each battery pack, thereby controlling the discharge sequence of each battery pack. During the discharge phase, the control module controls the first battery pack with a higher voltage value in the energy source system to discharge first. When the voltage difference between the second battery pack and the first battery pack is less than a threshold, the control module controls the first battery pack and the second battery pack to discharge simultaneously.

14. The electric gardening vehicle according to claim 12, characterized in that, The battery pack information received by the control module includes the state of charge (SOC) information of the battery packs. Based on the received SOC information, the control module selectively opens or closes the discharge control switch element to control the discharge sequence of each battery pack. During the discharge phase, the control module controls the first battery pack with a higher state of charge in the energy source system to discharge first. When the difference in state of charge between the second battery pack and the first battery pack is less than a threshold, the first battery pack and the second battery pack are controlled to discharge simultaneously.

15. The electric gardening vehicle according to claim 12, characterized in that, During the initial discharge phase, the control module controls at least one battery pack with a higher evaluation value in the energy source system to discharge first; when the voltage of other battery packs in the energy source system exceeds the bus voltage of the electrical device, the module controls all battery packs exceeding the bus voltage of the electrical device to discharge together.

16. The electric gardening vehicle according to claim 15, characterized in that, The evaluation value is determined based on at least one state parameter information of the battery pack; The battery pack's status parameters include voltage, capacity, charge, internal resistance, and health status.

17. The electric gardening vehicle according to claim 16, characterized in that, The evaluation value is determined by weighted summation or weighted average based on at least one state parameter information of the battery pack.

18. The electric gardening vehicle according to claim 15, characterized in that, At least one of the battery packs with a higher evaluation value includes the battery pack with the highest evaluation value and the battery pack whose difference from the highest evaluation value is within a preset difference range.

19. The electric gardening vehicle according to claim 15, characterized in that, The control circuit also includes a bus voltage monitoring component for monitoring the bus voltage of the load. For other battery packs in the energy source system, when the load bus voltage rises and exceeds the voltage of the battery pack, the control module controls the battery pack to stop discharging.

20. The electric gardening vehicle according to claim 12, characterized in that, The first battery pack and the second battery pack are operably connected in parallel to the control module of the electric gardening vehicle. The control module selectively controls the power output of the first battery pack and / or the second battery pack through a discharge control switch element.

21. The electric gardening vehicle according to claim 20, characterized in that, The control circuit includes a first circuit branch corresponding to the first battery pack and a second circuit branch corresponding to the second battery pack. The control module controls the first circuit branch to conduct so that the first battery pack discharges and / or controls the second circuit branch to conduct so that the second battery pack discharges.

22. The electric gardening vehicle according to claim 21, characterized in that, Both the first circuit branch and the second circuit branch are equipped with a first MOSFET and a second MOSFET; The first battery pack is connected in series with the first MOSFET and the second MOSFET in the first circuit branch. The second battery pack is connected in series with the first MOSFET and the second MOSFET in the second circuit branch; wherein, Both the first MOSFET and the second MOSFET include a body diode, and the conduction direction of the body diode of the first MOSFET is opposite to that of the body diode of the second MOSFET.

23. The electric gardening vehicle according to claim 22, characterized in that, The first MOSFET is a charging switch, and the conduction direction of the body diode in the first MOSFET is the same as the direction of the discharge current; the second MOSFET is a discharging switch, and the conduction direction of the body diode in the second MOSFET is the same as the direction of the charging current.

24. The electric gardening vehicle according to claim 12, characterized in that, While the battery pack inside the electric gardening vehicle is supplying power to external electrical devices, if a battery pack is added or removed, the control module updates the battery pack's registry and continues to control the discharge based on the updated registry.

25. An electric gardening vehicle, characterized in that, include: The vehicle includes a frame body, a traveling mechanism for driving the vehicle, a working mechanism for performing work functions, and an energy source system. The energy source system supplies power to the traveling mechanism and the working mechanism. The traveling mechanism, the working mechanism, and the energy system are all mounted on the frame body. The energy source system includes a battery pack; The electric landscaping vehicle has an electrical socket. The charger of the electric landscaping vehicle charges the battery pack inside the electric landscaping vehicle through the electrical socket, and the electric landscaping vehicle supplies power to external electrical devices through the electrical socket. The external electrical devices are electrically connected to the battery pack inside the vehicle through the electrical socket.

26. The electric gardening vehicle according to claim 25, characterized in that, The battery pack was originally designed as a power source for cordless power tools. The main frame is equipped with a battery compartment, in which the battery pack is detachably installed. The battery pack can be removed from the battery compartment of the electric gardening vehicle and installed in the cordless power tool.

27. An electric gardening vehicle, characterized in that, include: The vehicle includes a frame body, a walking mechanism for driving the vehicle, a working mechanism for performing work functions, and a battery pack. The working mechanism is detachably connected to the frame body, and the battery pack is detachably installed on the frame body and supplies power to the walking mechanism and the working mechanism. The walking mechanism supports the frame body. The electric garden vehicle is equipped with an electrical socket on its body surface. The working mechanism has a working motor and an electrical plug. The electrical socket and the electrical plug are pluggably connected to realize the electrical connection between the working motor and the battery pack. When the electrical plug of the working mechanism and the electrical socket of the vehicle body are disconnected, the charger output terminal of the electric gardening vehicle can be electrically connected to the electrical socket on the vehicle body to charge the battery pack inside the electric gardening vehicle.

28. The electric gardening vehicle according to claim 27, characterized in that, The electric gardening vehicle supplies power to an external electrical device via the electrical socket. The electrical device can be an AC wired device or a DC wired device. The battery pack outputs power to the electrical device through the electrical socket. The electrical device is different from the working mechanism.

29. The electric gardening vehicle according to claim 28, characterized in that, A power conversion device is also provided between the electrical device and the electrical socket connection circuit. The power conversion device converts the electrical energy output through the electrical socket into AC or DC power that matches the electrical device.

30. The electric gardening vehicle according to claim 28, characterized in that, The electrical socket has a communication terminal. The charger, working mechanism, and electrical device of the electric gardening vehicle can selectively communicate with the control module inside the electric gardening vehicle through the communication terminal. The control module inside the vehicle identifies the device connected to the electrical socket based on the received communication signal. The device includes the charger, working mechanism, and electrical device.

31. The electric gardening vehicle according to claim 30, characterized in that, The communication methods between the electric gardening vehicle and the charger, operating mechanism and electrical device include at least one of CAN communication interface, RS485 serial port and UART communication interface.

32. The electric gardening vehicle according to claim 30, characterized in that, When the control module of the electric gardening vehicle determines, based on the received communication signal, that the device connected to the electrical socket is not a working mechanism, the electric gardening vehicle is prohibited from moving.

33. An electric gardening vehicle, characterized in that, include: The vehicle includes a frame body, a walking mechanism for driving the vehicle, a working mechanism for performing work functions, and a battery pack. The walking mechanism includes a walking motor, the working mechanism includes a working motor, and the battery pack supplies power to the walking motor and the working motor. The electric gardening vehicle has an electrical socket, through which the charger of the electric gardening vehicle charges the battery pack inside the vehicle, and through which the electric gardening vehicle supplies power to external electrical devices. When the controller of the electric gardening vehicle determines, based on the received signal, that a charger and / or electrical device is connected to the electrical socket, it prohibits the electric gardening vehicle from moving.

34. The electric gardening vehicle according to claim 33, characterized in that, The battery pack was originally designed as a power source for cordless power tools, and the battery pack is detachably mounted on the electric gardening vehicle and can be removed from the electric gardening vehicle and installed on the cordless power tools.

35. The electric gardening vehicle according to claim 33, characterized in that, The electric gardening vehicle is a ride-on lawnmower, the operating mechanism is a lawnmower mechanism that performs lawnmowing operations, and the operating motor is a cutting motor that drives the cutter blade to rotate.

36. An electric wheeled vehicle, characterized in that, include: The vehicle frame body, the running gear for driving the vehicle, and the battery pack, wherein the battery pack supplies power to the running gear, and the running gear and the battery pack are all mounted on the vehicle frame body; The vehicle has an electrical socket on its surface, through which the charger of the electric wheeled vehicle charges the battery pack inside the vehicle, and through which the electric wheeled vehicle supplies power to an external wired power device, which is electrically connected to the battery pack inside the vehicle via the electrical socket.

37. The electric wheeled vehicle according to claim 36, characterized in that, The electric wheeled vehicle includes multiple battery packs originally designed as power sources for cordless power tools. The frame body forms a battery compartment, and the multiple battery packs are detachably mounted in the battery compartment of the electric wheeled vehicle and can be removed from the battery compartment and installed on other cordless power tools.

38. The electric wheeled vehicle according to claim 36, characterized in that, The electric wheeled vehicles include manned lawnmowers, electric golf carts, all-terrain vehicles, or electric motorcycles, and the cordless power tools include handheld power tools and handheld garden tools.

39. An electric work tool, characterized in that, The device includes a frame body, a working mechanism, and a battery pack. The working mechanism includes a working motor. The working mechanism and the battery pack are mounted on the frame body, and the battery pack supplies power to the working motor. The surface of the electric working tool has an electrical socket. The charger of the electric working tool charges the battery pack inside the tool through the electrical socket, and the electric working tool supplies power to external electrical devices through the electrical socket. The electrical devices are electrically connected to the battery pack inside the electric working tool through the electrical socket.

40. The electric work tool according to claim 39, characterized in that, The electric work tools include cordless electric work equipment such as push lawnmowers and pull electric trailers.

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