Electric garden work vehicle, electric wheeled vehicle and electric work tool

Abstract

The invention discloses an electric garden operation vehicle, an electric wheeled vehicle and an electric operation tool, the electric garden operation vehicle comprises an installation main body, a walking mechanism for driving the vehicle to walk, an operation mechanism for executing an operation function and an energy source system, and the energy source system supplies power to the walking mechanism and the operation mechanism; the walking mechanism and the energy system are arranged on the mounting main 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 is detachably connected to the other cordless electric tool for power supply; the electric garden operation vehicle is provided with an electric socket, a charger of the electric garden operation vehicle charges each battery pack in the vehicle through the electric socket, the electric garden operation vehicle supplies power to an external wired power utilization device through the electric socket, and the wired power utilization device is electrically connected with the battery packs in the vehicle.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of garden tools, in particular to an electric garden working vehicle, an electric wheeled vehicle and an electric working tool. BACKGROUND

[0002] With the continuous progress of science and technology, electric garden working vehicles and electric tools have gradually replaced traditional fuel garden vehicles and tools. Various types of garden vehicles and handheld electric tools are usually used in work sites such as lawns, gardens, farms and construction sites. Conventional electric tools are generally divided into three categories: AC wired electric tools powered by alternating current power supply, DC wired electric tools powered by direct current power supply, and cordless electric tools powered by rechargeable batteries. AC wired electric tools are usually connected to alternating current power supply (such as mains, power stations, portable power sources with AC output, etc.) using power cords, and DC wired electric tools are usually connected to direct current power supply (such as backpack battery packs, portable power sources with DC output, etc.) using power cords. In some outdoor scenarios, users may not have or carry similar power sources for wired electric tools, resulting in the inability to use these wired electric tools or wired electronic devices, which cannot meet the needs of users in outdoor scenarios. SUMMARY

[0003] In order to solve the problems of the prior art, the main purpose of the present application is to provide an electric garden working vehicle, an electric wheeled vehicle and an electric working tool.

[0004] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0005] On the one hand, the present application provides an electric garden working vehicle, comprising: a mounting body, a walking mechanism for driving the vehicle to walk, a working mechanism for performing a working function, and an energy source system for supplying power to the walking mechanism and the working mechanism, wherein the walking mechanism, the working mechanism and the energy system are all arranged on the mounting body.

[0006] 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 is detachably connected to the other cordless electric tool for power supply.

[0007] The electric garden working vehicle has an electric socket, a charger charges the battery pack in the electric garden working vehicle through the electric socket, and the electric garden working vehicle supplies power to external electric devices through the electric socket, and the electric devices are electrically connected to the battery pack in the vehicle through the electric socket.

[0008] As preferred, the electric device is a wired electric tool and / or a wired electronic device; as also preferred, the electric socket is a charging and discharging interface provided on the surface of the vehicle, which can be a female plug or a male plug, without affecting the implementation of the scheme.

[0009] Optionally, the mounting body forms a battery compartment, the inner wall of the battery compartment has a plurality of electrical connection terminals and a track cooperable with the battery pack, the first battery pack and the second battery pack are pluggably mounted in the battery compartment through the track and supply power to the electric garden working vehicle through the electrical connection of the electrical connection terminals.

[0010] Optionally, the first battery pack and the second battery pack are battery packs with different sizes and / or energy densities, the battery pack includes a shell, a plurality of battery cells accommodated in the shell, an electrical connection connector for outputting electrical energy, and a circuit board with a control circuit, the circuit board is electrically connected with the battery cells and the electrical connection connector. For cordless electric tools, different battery packs may be installed for different cordless electric tools, and the battery compartment can accommodate battery packs of different specifications, which is beneficial for users to adapt different types of cordless electric tools outdoors, i.e., users can remove the battery pack adapted to the tool from the electric garden working vehicle for installation and use according to demand when they need to use the cordless electric tool outdoors. Specifically, the installation of the battery pack in the battery compartment can include the following cases: all first-specification battery packs are installed in the battery compartment, all second-specification battery packs are installed in the battery compartment, and both first-specification battery packs and second-specification battery packs are installed in the battery compartment.

[0011] Optionally, the first battery pack and the second battery pack are battery packs of the same size specification and / or the same energy density, which is beneficial for the charging management and discharging management of the battery pack. 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, and more than two battery packs can be installed in the battery compartment. The battery pack is also called "battery pack" or "rechargeable battery" in some cases, which is a power supply device that can be detachably installed on a tool, and the battery pack is installed on a cordless electric tool in a pluggable manner in most cases.

[0012] Optionally, the electric garden working vehicle is internally provided with an inverter, the inverter is electrically connected to the battery pack and the electric socket, the power of the battery pack is converted into AC power by the inverter and is output to the electric device through the electric socket; wherein the electric device is an AC wired electric device, the power cord of the AC wired electric device is directly connected to the electric socket, or the electric socket is connected to the AC wired electric device through an AC discharge gun to realize discharge. The AC discharge gun is a power cord with a double interface, which is provided with a vehicle end plug connected to the electric garden working vehicle and a socket, has a physical conversion function, and the power cord of the AC wired electric device can be connected to the socket of the AC discharge gun.

[0013] Optionally, the electric socket of the electric garden working vehicle is electrically connected to the wired electric device through an electric energy conversion device; wherein the input end of the electric energy conversion device is connected to the electric socket, and the output end of the electric energy conversion device is connected to the wired electric device.

[0014] Optionally, the electric energy conversion device has an inverter, which converts the DC power output by the electric socket into AC power and then outputs it to the AC wired electric device; in this way, without increasing the additional cost of the electric garden working vehicle, the user can choose to purchase the electric energy conversion device according to his own needs to realize power supply for the AC wired electric device.

[0015] Optionally, the electric energy conversion device has a voltage boosting module and / or a voltage reducing module, which converts the DC voltage output by the electric socket into a DC voltage suitable for the DC wired electric device to supply power to the DC wired electric device; specifically, in some cases, the voltage output by the electric garden working vehicle may be greater or less than the DC voltage required by the DC wired electric device, for example, the voltage of the battery pack in the electric garden working vehicle is 58V and the DC voltage output by the electric socket is also 58V, while the electric device is a 24V DC wired electric device, so the voltage of 58V needs to be reduced to 24V by the electric energy conversion device to provide power to the DC wired electric device.

[0016] Optionally, the output voltage of the electric socket of the electric garden working vehicle is the same as the rated voltage required by the DC wired electrical device when it is working normally, and the electrical connection between the electric socket and the electrical device through the adapter wire with physical switching function can realize the power supply to the DC wired electrical device; one end of the adapter wire is adaptively connected with the electric socket, and the other end of the adapter wire is adaptively connected with the input end of the DC wired electrical device, such as the battery pack in the electric garden working vehicle is a 58V battery pack and the output voltage of the electric socket is 58V, the rated voltage required by the DC wired electrical device when it is working normally is also 58V, and the output voltage of the electric socket meets the voltage requirement of the DC wired electrical device, but the input end of the DC wired electrical device and the electric socket are not matched, which leads to the failure of direct interconnection, at this time the adapter wire has the physical conversion function and can transmit the electric energy output by the electric socket to the electrical device. Of course, in some cases, the power line of the DC wired electrical device can also be directly matched with the electric socket, depending on whether the input interface of the power line of the DC wired electrical device is matched with the electric socket.

[0017] Optionally, the electric socket has a communication terminal, and the electric garden working vehicle is communicatively connected with the charger and / or the electrical device through the communication terminal to identify the type of the product connected with the electric socket; wherein the controller of the electric garden working vehicle allows the charger to charge the electric garden working vehicle when it is judged by the controller according to the signal transmitted by the communication terminal that the electric socket is connected with the charger of the electric garden working vehicle; and the controller of the electric garden working vehicle allows the battery pack in the electric garden working vehicle to discharge externally when it is judged by the controller according to the signal transmitted by the communication terminal that the electric socket is connected with the wired electrical device.

[0018] Optionally, the output end of the charger and / or the input end of the electrical device are electrically connected with the electric socket through the electric plug; wherein the electric socket further has a voltage signal detection terminal, the electric plug has a micro switch operatively electrically connected with the voltage signal detection terminal, and the surface of the electric plug has a button for controlling the opening and / or closing of the micro switch, the micro switch is in the open state during the installation of the electric plug to the electric socket and the removal of the electric plug from the electric socket.

[0019] Optionally, the electrical socket further has a first positive connection terminal and a first negative connection terminal, and the electrical plug further has a second positive connection terminal and a second negative connection terminal, the first positive connection terminal and the second positive connection terminal being electrically connected, and the first negative connection terminal and the second negative connection terminal being electrically connected when the electrical plug is connected to the electrical socket; the control module of the electric garden working vehicle and / or the charger controls the conduction or closing of the positive and negative connection circuit according to the voltage signal detected by the voltage signal detection terminal; wherein the main circuit of the positive and negative connection is provided with a main switch element for controlling the conduction and closing of the main circuit, and the controller controls the opening and closing of the main switch element according to the voltage signal. In this way, the sparking caused by the contact of the electrical plug with the electrical socket is avoided, and the personal danger caused by the electrified plug when the plug is pulled out is also avoided. The voltage signal detected by the voltage signal detection terminal is a handshake signal for the charger and a power supply signal for the wired electrical device; specifically, when the electric garden working vehicle is connected to the charger, the A+ signal of the electric garden working vehicle is connected to the charger, and the A+ signal is a direct current high-level voltage, including but not limited to DC3.3V, DC5.5V, DC12V, and DC15V; when the control unit of the charger correctly detects the A+ voltage signal, the control unit of the charger establishes communication with the control unit of the electric garden working vehicle, and the charger obtains the charging demand of the electric garden working vehicle; when the electric garden working vehicle is connected to the wired load device, the A+ voltage of the electric garden working vehicle is connected to the load device, and the A+ voltage is a direct current 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 electrical device, and the control unit of the wired electrical device starts to supply power after being powered on, and establishes communication with the control unit of the electric garden working vehicle.

[0020] Optionally, the electric garden working vehicle has a control circuit for managing the power output of the first battery pack and the second battery pack, the control circuit comprising a control module and a discharge control switch element arranged in the control circuit, the control module being in communication connection with each battery pack, and the control module selectively opens or closes the discharge control switch element according to the received battery pack information to control the discharge sequence of each battery pack; wherein the first battery pack and the second battery pack are operatively connected in parallel to the control module of the electric garden working vehicle, and the control module selectively controls the power output of the first battery pack and the second battery pack through the discharge control switch element. Of course, the first battery pack and the second battery pack are only used to distinguish different battery packs, and the number of battery packs is not limited, and there can be a third battery pack and a fourth battery pack in the battery compartment; preferably, the plurality of battery packs are battery packs with the same voltage, and the plurality of battery packs are connected in parallel to the main control circuit.

[0021] Optionally, multiple battery packs can be connected in the battery compartment of the electric garden working vehicle, the battery packs are in parallel relationship, a single battery pack has a standard voltage greater than 48V, the positive electrode of each battery pack is provided with a discharge control switch element for preventing mutual charging between the battery packs and cutting off when the battery pack fails. The control circuit includes a first circuit branch and a second circuit branch corresponding to the first battery pack and the second battery pack, respectively; the first circuit branch and the second circuit branch are provided with discharge control switch elements, and the control module controls the first circuit branch to be conductive to make the first battery pack discharge and / or controls the second circuit branch to be conductive to make the second battery pack discharge. The discharge control switch element includes a first MOS tube and a second MOS tube, which are sequentially connected in series; wherein the first MOS tube and the second MOS tube each include a body diode, the conduction direction of the body diode of the first MOS tube is opposite to the conduction direction of the body diode of the second MOS tube, the conduction direction of the body diode of the first MOS tube is consistent with the direction of the discharge current, and the conduction direction of the body diode of the second MOS tube is consistent with the direction of the charging current; wherein the second MOS tube is a discharge switch in the circuit branch, and the first MOS tube is a 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 types of current collection devices), the control module interacts with the information of each battery pack, and can obtain information of each battery pack including but not limited to voltage, temperature, discharge current and battery state. When preparing to discharge outward, the control module first opens the first MOS tube and the second MOS tube connected in series at the positive electrode of the first battery pack with higher voltage and the second MOS tube (discharge switch) of the second battery pack; in the discharge process of the first discharge embodiment, when the discharge current of the second battery pack exceeds the preset threshold, the first MOS tube (charging switch) of the second battery pack is opened, at this time the first battery pack and the second battery pack participate in discharging at the same time until the power of each battery pack is discharged; in the discharge process of the second discharge embodiment, when the voltage of the second battery pack and the voltage of the first battery pack are less than the preset threshold (for example, ≤100mV), the first MOS tube (charging switch) of the second battery pack is opened, at this time the first battery pack and the second battery pack participate in discharging at the same time until the power of each battery pack is discharged.

[0023] Optionally, in another embodiment of discharging, the battery pack information received by the control module includes voltage value information of the battery packs, and the control module selectively opens or closes the first MOS tube and / or the second MOS tube on the circuit branch according to the received voltage value of the battery pack to control the discharging sequence of the battery packs; wherein the control module controls the first battery pack with higher voltage value in the energy source system to discharge first in the discharging stage, and controls the first battery pack and the second battery pack to discharge simultaneously when the voltage difference between the second battery pack and the first battery pack is less than a preset threshold value.

[0024] Optionally, in another embodiment of discharging, the battery pack information received by the control module includes state of charge (SOC) information of the battery packs, and the control module selectively opens or closes the first MOS tube and / or the second MOS tube on the circuit branch of each battery pack according to the received SOC information of the battery pack to control the discharging sequence of the battery packs; wherein the control module controls the first battery pack with the highest SOC in the energy source system to discharge first in the discharging stage, and controls the first battery pack and the second battery pack to discharge simultaneously when the SOC difference between the second battery pack and the first battery pack is less than a preset threshold value.

[0025] Optionally, in another embodiment of discharging, the control module determines the evaluation value of each battery pack according to the collected state parameter information of each battery pack, and then controls at least one battery pack with higher evaluation value to discharge first, and controls the battery packs with voltage exceeding the load bus voltage of the power utilization device to discharge together when the voltage of other battery packs exceeds the load bus voltage of the power utilization device. Wherein the state parameter information of the battery pack includes voltage information, capacity information, charge information, internal resistance information and health state information; the evaluation value of the battery pack is determined based on at least one state parameter information of the battery pack by weighted summation or weighted average; the at least one battery pack with higher evaluation value includes the battery pack with the highest evaluation value and all battery packs with evaluation value within a preset difference range from the highest evaluation value; the voltage of other battery packs exceeding the load bus voltage of the power utilization device can be one battery pack or multiple battery packs; the way of comparing the voltage of the battery pack with the load bus voltage and controlling the discharging of multiple battery packs according to the comparison result can ensure the equal discharging of multiple battery packs and improve the discharging efficiency. Specifically, due to the effect of high-power load of the wired power utilization device, the corresponding load bus voltage will be gradually lowered when the device starts, and in this process, the voltage of other battery packs in the energy source system will exceed the load bus voltage one by one, and the control module is configured to control the battery packs with voltage exceeding the load bus voltage to discharge simultaneously.

[0026] Optionally, the control circuit of the electric garden working vehicle further comprises a bus voltage monitoring component for monitoring the load bus voltage, and when the load bus voltage rises and exceeds the voltage of a battery pack in the energy source system, the control module controls the battery pack with a lower load bus voltage to stop discharging to protect the battery pack from over-discharging.

[0027] Optionally, during the period of supplying power to external power consuming devices by the battery pack in the electric garden working vehicle, if a battery pack is added or removed, the control module updates the battery pack registration table and continues discharging control based on the updated registration table.

[0028] Optionally, only one battery pack is configured in the battery compartment of the electric garden working vehicle, and the battery pack can supply power to external wired power consuming devices through the electrical outlet; wherein the battery pack is originally designed as the power source of an electric tool, the battery pack is detachably installed in the battery compartment, and the battery pack can be detached from the battery compartment on the electric garden working vehicle and installed in another electric tool (such as a handheld cordless electric garden blower, an electric chain saw, an electric trimmer, a hand-push mower, etc.).

[0029] Optionally, the working mechanism of the electric garden working vehicle is detachably mechanically connected to the vehicle body, the battery pack is installed on the vehicle body to supply power to the running mechanism and the working mechanism, the working mechanism includes a working motor and an electrical plug, and the electrical connection between the battery pack and the working motor can be achieved after the working mechanism is installed on the vehicle body and the electrical plug is connected with the electrical outlet; wherein when the electrical plug of the working mechanism is disconnected from the electrical outlet of the vehicle body, the charger of the electric garden working vehicle can be connected with the electrical outlet to charge the battery pack on the vehicle body, or an external wired power consuming device can be electrically connected with the battery pack on the vehicle body through the electrical outlet to use the battery pack on the vehicle body as the power source of the wired power consuming device.

[0030] Optionally, an electric energy conversion device is further provided between the connection circuit of the wired power consuming device and the electrical outlet, and the electric energy conversion device converts the voltage output by the electrical outlet into alternating current or direct current suitable for the wired power consuming device.

[0031] Optionally, the charger, the working mechanism, and the power consuming device of the electric garden working vehicle include terminals that can be adaptively connected with the communication terminals of the electrical outlet, and the control module of the electric garden working vehicle identifies the type of the device connected with the electrical outlet according to the signals received by the communication terminals; wherein the communication mode between the electric garden working vehicle and the charger, the working mechanism, and the power consuming device includes at least one of CAN communication, RS485 serial communication, and UART communication.

[0032] Optionally, the control module of the electric garden working vehicle determines whether the non-working mechanism is connected to the electric socket according to the received signal, and prohibits the electric garden working vehicle from moving if the non-working mechanism is connected to the electric socket; in this way, the danger of the electric garden working vehicle being mis-operated during the charging of the battery pack or the discharging of the wired electric device is avoided.

[0033] Optionally, the electric garden working vehicle is a riding lawn mower or a standing lawn mower; the working mechanism is a mowing mechanism, and the working motor is a cutting motor that drives the rotary mowing blade.

[0034] In another aspect, the present 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 includes a moving mechanism that drives the vehicle to move and a battery pack that supplies power to the moving mechanism; the surface of the vehicle has an electric socket through which a charger charges the battery pack in the vehicle, and the electric wheeled vehicle supplies power to an external electric device through the electric socket, and the electric device is electrically connected to the battery pack in the vehicle through the electric socket.

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

[0036] In yet another aspect, the present application provides an electric working tool, which is different from the electric garden working vehicle. The electric working tool is an electric device containing a single-function motor, such as a hand-push lawn mower, an electric trailer or other handheld electric devices. The hand-push lawn mower only includes a mowing motor, and the electric trailer only includes a moving motor. These electric working tools will perform tasks outdoors, but do not necessarily include both a moving motor and a cutting motor. The electric working tool includes a mounting body, a working motor, and a battery pack that supplies power to the working motor, and the working mechanism and the battery pack are arranged in the mounting body; the surface of the electric working tool has an electric socket through which a charger charges the battery pack in the electric working tool, and the electric working tool supplies power to an external wired electric device through the electric socket, and the wired electric device is electrically connected to the battery pack in the electric working tool through the electric socket. Wherein, the working motor is the motor that performs the main working function of the electric working tool, such as the cutting motor of the hand-push lawn mower and the moving motor of the electric trailer.

[0037] The electric garden working vehicle, the electric wheeled vehicle and the electric working tool of the present application can be used as the power supply of another AC wired electric tool, DC wired electric tool and cordless electric tool in the environment of outdoor working, and the DC electric energy of the battery pack of the electric garden working vehicle, the electric wheeled vehicle and the electric working tool is used to drive another wired electric device or cordless electric tool. Compared with the portable energy storage power supply or generator as the power supply of the AC wired electric tool and the DC wired electric tool, the electric garden working vehicle and the electric wheeled vehicle are more convenient to transport, and meanwhile, the user does not need to pay extra cost to purchase the energy storage mobile power supply on the premise that the user has the vehicle or the wired electric working tool, and the electric power is more convenient to obtain.

[0038] The foregoing general description and the following description are only exemplary and explanatory, and are not used to limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0039] The drawings incorporated into the specification and constituting a part of the specification show embodiments consistent with the present application and, together with the specification, serve to explain the principles of the present application.

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, for those skilled in the art, other drawings can also be obtained from these drawings without any creative labor.

[0041] Figure 1 is an appearance view of an electric garden working vehicle as an embodiment;

[0042] Figure 2A is an appearance view of an electric garden working vehicle as an embodiment;

[0043] Figure 2B is an appearance view of an electric garden working vehicle as an embodiment;

[0044] Figure 3 is a schematic view of the electric garden working vehicle as an embodiment when charging;

[0045] Figure 4 is a schematic view of the electric garden working vehicle as another embodiment when charging.

[0046] Figure 5 is a schematic view of the electric garden working vehicle as an embodiment when discharging to the outside;

[0047] Figure 6 is a structural block diagram of the electric garden working vehicle as an embodiment when discharging to the outside;

[0048] Figure 7is a schematic diagram of an electrically powered garden vehicle discharging as another embodiment;

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

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

[0051] Figure 9A is an exploded schematic diagram of a battery pack as an embodiment;

[0052] Figure 9B is an exploded schematic diagram of a battery pack as another embodiment;

[0053] Figure 10 is a schematic diagram of an electrical outlet of an electrically powered garden vehicle as an embodiment;

[0054] Figure 11 is a structural block diagram schematic of the management of the circuitry portion of an electrically powered garden vehicle as an embodiment when charging;

[0055] Figure 12 is a structural block diagram schematic of the management of the circuitry portion of an electrically powered garden vehicle as another embodiment when discharging;

[0056] Figure 13 is a circuit schematic of a portion of the battery pack control circuitry of an electrically powered garden vehicle as an embodiment;

[0057] Figure 14 is a circuit schematic of a portion of the battery pack control circuitry of an electrically powered garden vehicle as another embodiment;

[0058] Figure 15 is a flowchart of the management of an electrically powered garden vehicle as an embodiment when charging;

[0059] Figure 16 is a flowchart of the management of an electrically powered garden vehicle as another embodiment when discharging;

[0060] Figure 17 is a circuit schematic of another portion of the battery pack control circuitry of an electrically powered garden vehicle as an embodiment;

[0061] Figure 18 is a circuit schematic of another portion of the battery pack control circuitry of an electrically powered garden vehicle as another embodiment;

[0062] Figure 19 is a flowchart of the management of a battery pack of an electrically powered garden vehicle as an embodiment;

[0063] Figure 20 is a battery pack management flowchart for an electric garden work vehicle as another embodiment;

[0064] Figure 21 is a block diagram of an electric garden work vehicle as one embodiment;

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

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

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

[0068] Figure 25 is a perspective view of an electric garden work 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 electric device as one embodiment;

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

[0072] Figure 29 is a perspective view of an electric garden work vehicle of a modular work mechanism as one embodiment. DETAILED DESCRIPTION

[0073] In order to enable persons skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by persons skilled in the art without creative work should belong to the protection scope of the present application.

[0074] It is to be understood that the terms "first", "second", and the like, used in the description and the claims of the present application as well as the above description of the drawings merely refer to structure which is different. They are not to be interpreted as indicating a specific order or sequence of performing the steps described therein. It is to be understood that the steps recited in the description and the claims of the present application can be performed in any order possible unless otherwise specified. Furthermore, the terms "comprise", "comprising", and the like, and the terms "include", "including", and the like, are intended to cover a non-exclusive inclusion such that any process, method, article, or apparatus that includes, or comprises, an item listed in the description and the claims of the present application of the present application without necessarily including all of the items listed in the description and the claims of the present application of the present application.

[0075] Figures 1-7 、 Figures 21-23 , is a perspective view of an electric garden working vehicle 100, specifically an electric riding lawn mower, wherein the electric garden working vehicle 100 comprises a traveling mechanism 101, a working mechanism 102, an energy source system 103, and a mounting body 110.

[0076] The traveling mechanism 101, the working mechanism 102, and the energy source system 103 are all arranged on the mounting body 110.

[0077] Specifically, the traveling mechanism 101 comprises a traveling motor 1011 and a traveling assembly 1012, wherein the traveling motor 1011 is electrically connected to the energy source system 103, and the traveling assembly 1012 is drivingly connected to the traveling motor 1011. It is to be understood by those skilled in the art that the traveling assembly 1012 can be implemented as traveling wheels, traveling tracks, or other mechanisms capable of moving the mounting body 110.

[0078] The working mechanism 102 can be implemented as a mowing mechanism, a sweeping mechanism, or other working mechanisms capable of performing garden work in one embodiment, and the present application is not limited in this respect. It is to be understood by those skilled in the art that in a preferred embodiment, the energy source of the working mechanism 102 is electrically connected to the energy source system 103, so that the energy source system 103 can provide electric energy to the working mechanism 102, but this is not necessarily the case, in other words, when the electric garden working vehicle is a hybrid vehicle, the energy source of the working mechanism 102 can come from the mechanical energy formed by the engine.

[0079] Reference Figure 1As shown in FIG. 2, the energy source system 103 comprises a battery pack. In a preferred embodiment, the energy source system comprises at least two battery packs, i.e. 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 mounting 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 on the mounting body 110. More preferably, the first battery pack 10301 and the second battery pack 10302, which are detachable from the mounting body 110, are configured to be directly powered to the cordless power tool 107, such as Figure 8A and Figure 8B As shown in FIG. 3, it shows a schematic view of the first battery pack 10301 being detachably mounted on the cordless power tool 107 as a power source of the cordless power tool.

[0081] As a preferred embodiment, the mounting body 110 forms a battery compartment 1030, wherein at least one of the first battery pack 10301 and the second battery pack 10302 is detachably mounted on 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 mounted on the battery compartment 1030, but also can be limited by the battery compartment 1030.

[0082] More preferably, referring to Figure 2B , the battery compartment 1030 further forms a track matched with the battery pack and at least one electrical connection terminal 2033 arranged in the battery compartment 1030 to access the whole machine circuit, so that when the battery pack needs to be placed in the battery compartment 1030, the track can guide the battery pack to be inserted into the battery compartment 1030, and after the battery pack is mounted, 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 providing power to the electric garden working vehicle; similarly, when the user needs to detach the battery pack, only needs to pull out the battery pack from the battery compartment 1030, in this way, not only the battery pack can be separated from the mounting body 110, but also the conductive part on the battery pack can be disconnected from the electrical connection terminal 2033 in the battery compartment 1030.

[0083] It is understood by those skilled in the art that the number of battery packs is only an example for those skilled in the art to understand the present application, and the battery packs certainly include a third battery pack 10303, a fourth battery pack 10304, a fifth battery pack 10305, and a sixth battery pack 10306, and the present application is not limited in this respect.

[0084] It is worth mentioning that at least two battery packs with different energy densities and / or specifications are included in the battery pack, for example, the first battery pack 10301 and the second battery pack 10302 have different size specifications and energy densities. In this way, the user can take out different battery packs to adapt to different cordless power tools 107 outdoors, that is, when the user needs to use these cordless power tools 107 outdoors, the user can take out the battery pack that matches the tool from the battery compartment 1030 of the electric garden working vehicle 100 according to the demand.

[0085] Reference Figure 9B It is understood by those skilled in the art that each of the battery packs includes a housing 1031, a plurality of battery cells 1032 mounted in the housing, an electrical connection joint 1033 for outputting electrical energy, and a circuit board 1034 with a control circuit, the circuit board 1034 is electrically connected to the battery cells 1032 and the electrical connection joint 1033.

[0086] It is worth mentioning that the electric garden working 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] Reference Figure 3 The electrical socket 104 is configured to be electrically connected to an external charger 105 to be able to charge the battery pack electrically connected to the electrical socket 104, or with reference to Figure 4 The electric garden working vehicle 100 is built-in with a charger, and the electric garden working vehicle directly connects the external power supply through the electrical socket 104 to charge the battery pack in the vehicle field.

[0088] Reference Figure 5 Figure 7 As a preferred, the electrical socket 104 is also configured to be electrically connected to an external power device 106, so that the battery pack can supply power to the power device 106 (AC wired power device 1061, DC wired power device 1062) through the electrical socket 104. That is, the battery pack of the electric garden working vehicle 100 can supply power to the external power device 106 through the electrical socket 104 and receive the electrical energy charged from the external power supply by the charger 105, thereby realizing the same port for charging and discharging.

[0089] It is worth mentioning that, as an example, the electric device 106 is a wired electric tool and / or a wired electronic device; as a preferred embodiment, the electric socket 104 is a charging and discharging interface arranged on the surface of the mounting body 110, which can be a female plug or a male plug, and does not affect the implementation of the scheme.

[0090] Reference Figure 5 As a preferred embodiment, the electric garden working vehicle 100 further comprises an electric energy conversion device 108, wherein the electric energy conversion device 108 is electrically connected to the electric socket 104. In one embodiment, the electric energy conversion device 108 is detachably electrically connected to the electric socket 104.

[0091] It is worth mentioning that, in the electric energy conversion device 108, the direct current output by the battery pack can be converted into alternating current, such as including at least one inverter. In this way, when the electric device 106 is an AC type wired electric device 1061, the battery pack can still supply power to the electric device 106, as shown in Figure 5

[0092] In a preferred embodiment, the electric socket 104 of the electric garden working vehicle 100 is connected to the electric device 106 through an alternating current discharge gun, wherein the two ends of the alternating current discharge gun are respectively provided with a conductive terminal and a socket, and the conductive terminal of one end is electrically connected to the electric socket 104, and the socket of the other end is electrically connected to the AC wired electric device 106.

[0093] In one embodiment, the electric energy conversion device 108 is arranged on the mounting body 110. As a preferred embodiment, the electric energy conversion device 108 is electrically connected to the electric socket 104 and the battery pack in a startable and closable manner, so that when the electric energy conversion device 108 is started, the electric garden working vehicle 100 can output alternating current through the electric socket 104, and when the electric energy conversion device 108 is closed, the electric garden working vehicle 100 can output direct current through the electric socket 104 to supply power to the DC type wired electric device 106.

[0094] In one embodiment, the electric socket 104 of the electric garden working vehicle 100 is externally connected to the electric energy conversion device 108, the input end of the electric energy conversion device 108 is connected to the electric socket 104, and the output end of the electric energy conversion device is connected to the wired electric device.

[0095] ​As preferred, the electric energy conversion device 108 comprises at least one voltage boosting module and / or voltage reducing module. The voltage boosting module and / or voltage reducing module is electrically connected to the electric socket 104 to boost or reduce the DC voltage outputted by the electric socket 104, so as to supply the external DC wired electric device 106.

[0096] In some cases, the voltage outputted by the electric garden working vehicle 100 can be greater or smaller than the DC voltage required by the DC wired electric device 106. For example, the voltage of the battery pack in the electric garden working vehicle 100 is 58V, the DC voltage outputted by the electric socket 104 is also 58V, and the electric device 106 is a 24V DC wired electric device 106. Therefore, the voltage boosting module and / or voltage reducing module of the electric energy conversion device 108 is needed to reduce the voltage from 58V to 24V to supply the DC wired electric device 106.

[0097] Alternatively, the voltage outputted by the electric socket 104 of the electric garden working vehicle 100 is the same as the voltage required by the DC wired electric device 106 for normal operation. The electric socket 104 and the DC wired electric device 106 can be electrically connected through an adapter wire with physical conversion function, so as to supply the electric device 106, as shown in Figure 7

[0098] One end of the adapter wire is adaptedly connected to the electric socket 104, and the other end of the adapter wire is adaptedly connected to the input end of the electric device 106. For example, the battery pack in the electric garden working vehicle 100 is a 58V battery pack, the output voltage of the electric socket 104 is 58V, and the DC voltage required by the DC wired electric device 106 for normal operation is also 58V. The output voltage of the electric socket 104 meets the requirement of the electric device. However, the input end of the DC wired electric device 106 cannot be directly matched with the electric socket 104. At this time, the adapter wire has a physical conversion function, and can transmit the electric energy outputted by the electric socket 104 to the electric device 106. Of course, in some cases, the power line of the DC wired electric device 106 can also be directly adaptedly connected to the electric socket 104, depending on whether the input interface of the power line of the DC wired electric device 106 is matched with the electric socket.

[0099] As preferred, the electric energy conversion device 108 connected to the electric socket 104 has an inverter unit. The electric energy conversion device 108 converts the DC electric energy outputted by the electric socket 104 into AC electric energy and transmits the AC electric energy to the electric device 106, and the electric device 106 is an AC wired electronic device.

[0100] Reference Figure 10 ​In one embodiment, the electrical socket 104 has communication terminals CAN H, CAN L, the electric garden working vehicle 100 is in communication connection 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; wherein the controller included in the electric garden working vehicle 100 judges, according to the signals transmitted by the communication terminals, that the electrical socket 104 is connected to the charger 105 of the electric garden working vehicle 100, and then allows the charger 105 to charge the electric garden working vehicle 100; the controller of the electric garden working vehicle 100 judges, according to the signals transmitted by the communication terminals, that the electrical socket 104 is connected to the electrical device 106, and then allows the battery pack in the electric garden working vehicle 100 to discharge externally.

[0101] It is worth mentioning that the communication mode between the communication terminals of the electrical socket 104 of the electric garden working vehicle 100 and the charger 105 or the electrical device 106 includes at least one of CAN communication, RS485 serial communication, and UART communication; when the control module of the vehicle judges, according to the received communication signals, that the electrical socket is connected to a non-working mechanism, the electric garden working vehicle is prohibited from walking.

[0102] Reference Figure 11 and Figure 12 In one embodiment, the output end of the charging device 105 and / or the input end of the load device 106 is in electrical connection with the electrical socket 104 through an electrical plug; wherein the electrical socket 104 further has a voltage signal detection terminal, the electrical plug has a micro switch operatively electrically connected with 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; during the process of installing the electrical plug into the electrical socket 104 and the process of taking the electrical plug out of the electrical socket 104, the micro switch is in an open state; in this way, the electrical safety of the user can be ensured when the output end of the charger 105 and / or the input end of the electrical device 106 is in electrical connection or disconnection with the electrical socket 104.

[0103] Reference Figures 10 to 16Optionally, the electric socket 104 further has a first positive connection terminal and a first negative connection terminal, the electric plug of the output end of the charger 105 and / or the input end of the electric device 106 has a second positive connection terminal and a second negative connection terminal, when the electric plug is connected to the electric socket 104, the first positive connection terminal is electrically connected with the second positive connection terminal, and the first negative connection terminal is electrically connected with the second negative connection terminal; the control module of the electric garden working vehicle 100 and / or the charger 105 controls the conduction or closing of the positive and negative connection circuit according to the voltage signal detected by the voltage signal detection terminal; wherein the main circuit of the positive and negative connection is provided with a main switch element for controlling the on-off of the circuit, and the control module controls the opening and closing of the main switch element according to the voltage signal.

[0104] In this way, the sparking caused by the contact with electricity when the electric plug is connected to the electric socket 104 is avoided, and the personal danger caused by the electrified plug when the electric plug of the charger 105 is pulled out is also avoided; the voltage signal detected by the voltage signal detection terminal is a handshake signal for the charger 105, and is a power supply signal for the control unit of the electric device 106.

[0105] Reference Figure 13 , Figure 14 and Figure 18 In one embodiment, the controller of the electric garden working vehicle 100 includes a control circuit for managing the electric energy 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 arranged in the control circuit, the control module is in communication connection with each battery pack, and the control module selectively opens or closes the discharge control switch element according to the received battery pack information to control the discharge sequence of each battery pack; wherein the first battery pack 10301 and the second battery pack 10302 are operatively connected in parallel to the control module of the electric garden working vehicle 100, and the control module selectively controls the electric energy 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 used to distinguish different battery packs, and do not limit the number of battery packs. Reference Figure 17 In one embodiment, the third battery pack 10303 and the fourth battery pack 10304 can also exist in the battery compartment 1030; preferably, a plurality of battery packs are battery packs with the same voltage, and a plurality of battery packs are connected in parallel on the main control circuit.

[0107] In one embodiment, a plurality of battery packs can be connected in the battery compartment 1030 of the electric garden working vehicle 100, and the plurality of battery packs are in parallel connection. Each battery pack has a standard voltage greater than 48V. The positive electrode of each battery pack is provided with a switch for preventing mutual charging between the battery packs and for cutting off the battery pack in case of failure.

[0108] As shown in Figure 13 and Figure 14 , the control circuit includes a first circuit branch and a second circuit branch connected to the first battery pack 10301 and the second battery pack 10302, respectively. The first circuit branch and the second circuit branch are each provided with a discharge control switch element. The control module controls the first circuit branch to be conductive to discharge the first battery pack and / or controls the second circuit branch to be conductive to discharge the second battery pack.

[0109] As shown in Figure 13 , the discharge control switch element includes a first MOS tube G2 and a second MOS tube G1, which are connected in series. The first MOS tube G2 and the second MOS tube G1 each include a body diode. The conduction direction of the body diode of the first MOS tube G2 is opposite to that of the second MOS tube G1. The conduction direction of the body diode of the first MOS tube G2 is consistent with the direction of the discharge current, and the conduction direction of the body diode of the second MOS tube G1 is consistent with the direction of the charging current. The second MOS tube G1 is a discharge switch in the circuit branch, and the first MOS tube G2 is a 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 collection device), and the control module is electrically connected to each of the battery packs and acquires electrical parameter information of each of the battery packs, including but not limited to voltage, temperature, discharge current, battery state information. When preparing to discharge externally, the control module first opens the first MOS tube and the second MOS tube connected in series with the positive electrode of the first battery pack 10301 and the second MOS tube of the second battery pack 10302 (discharge switch). In the discharge process of one discharge example, when the discharge current of the second battery pack 10302 exceeds a preset threshold, the first MOS tube (charging switch) of the second battery pack 10302 is opened, at which time the first battery pack 10301 and the second battery pack 10302 simultaneously participate in discharging until the electrical quantity of each of the battery packs is discharged; in the discharge process of a 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 (for example, ≤100 mV), the first MOS tube (charging switch) of the second battery pack 10302 is opened, at which time the first battery pack 10301 and the second battery pack 10302 simultaneously participate in discharging until the electrical quantity of each of the battery packs is discharged.

[0111] Optionally, in another discharge embodiment, the battery pack information received by the control module includes voltage value information of the battery packs, and the control module selectively opens or closes the first MOS tube and / or the second MOS tube on the circuit branch according to the received battery pack voltage value, thereby controlling the discharge sequence of each of the battery packs; wherein the control module controls the first battery pack with a higher voltage value in the energy source system to discharge first in the discharge phase, and controls the first battery pack 10301 and the second battery pack 10302 to discharge simultaneously in the case where the voltage difference between the first battery pack 10301 and the second battery pack 10302 is less than a threshold value.

[0112] Optionally, in yet another discharge embodiment, the battery pack information received by the control module includes state of charge (SOC) information of the battery packs, and the control module selectively opens or closes the first MOS tube and / or the second MOS tube on the circuit branch of each of the battery packs according to the received battery pack state of charge information, thereby controlling the discharge sequence of each of the battery packs; wherein the control module controls the first battery pack 10301 with the highest state of charge in the energy source system 103 to discharge first in the discharge phase, and controls the first battery pack 10301 and the second battery pack 10302 to discharge simultaneously in the case where the state of charge difference between the first battery pack 10301 and the second battery pack 10302 is less than a threshold value.

[0113] Reference Figure 19In another embodiment of discharging, the control module determines the evaluation value of each battery pack according to 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 power utilization device, the control module controls the battery packs with voltage exceeding the load bus voltage to discharge together. The state parameter information of the battery pack includes voltage information, capacity information, charge information, internal resistance information, and health status information.

[0114] Reference 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 a higher evaluation value include the battery pack with the highest evaluation value and all battery packs with an evaluation value within a preset difference range from the highest evaluation value. The voltage of other battery packs exceeding the load bus voltage of the power utilization device can be one battery pack or multiple battery packs. The method of comparing the voltage of the battery pack with the load bus voltage and controlling the discharge of multiple battery packs according to the comparison result can ensure the equalization of the discharge of multiple battery packs and improve the discharge efficiency.

[0115] Specifically, due to the effect of the high-power load of the power utilization device 106, the corresponding load bus voltage will be gradually lowered when the device starts. During this process, the voltage of 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 power utilization device.

[0116] Optionally, the control circuit of the electric garden working vehicle 100 further includes a bus voltage monitoring component for monitoring the load bus voltage. When the load bus voltage rises and exceeds the voltage of a battery pack, the control module controls the battery pack with lower load bus voltage to stop discharging, so as to protect the battery pack and avoid damage to the battery pack caused by over-discharge.

[0117] Optionally, during the process of supplying power to the external power utilization device 106 by the battery pack in the electric garden working vehicle 100, if a battery pack is added or removed, the control module updates the battery registration table and continues to control the discharge based on the updated registration table.

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

[0119] Those skilled in the art can understand that the power consuming device 106 can be implemented as an electric device, such as a handheld electric garden blower, an electric chain saw, an electric trimmer, a hand-push mower, etc.

[0120] Reference Figure 29 In another embodiment, the electric garden working vehicle 100 includes the working mechanism 102a, the working mechanism 102b, and the working mechanism 102c, which are detachably mounted on the mounting body 110. The working mechanism can be a snow removal mechanism with a snow removal function, a mower mechanism with a mowing function, or a blower mechanism with a blowing function. Especially when the working mechanism 102 needs to be powered by the battery pack, the working mechanism 102 further includes a conductive member, such as an electric wire with a plug, which is electrically connected to the conductive port of the mounting body 110 electrically connected to the battery pack in a plug-in manner. The conductive member is preferably the electric socket 104.

[0121] In addition, when the conductive member of the working mechanism 102 is disconnected from the electric socket 104 of the vehicle body, the electric garden working vehicle 100 can be connected to the electric socket 104 by the charger 105 to charge the battery pack, or the external power consuming device can be electrically connected to the battery pack through the electric socket 104 to use the battery pack on the vehicle body as the power source of the power consuming device 106.

[0122] Reference Figure 24 In one embodiment, the electric garden working vehicle 100 is implemented as an electric wheeled vehicle without the working mechanism 102, such as an electric golf cart, an all-terrain vehicle, or an electric motorcycle, etc.

[0123] In one embodiment, the controller of the electric garden working vehicle determines whether the electric socket is connected to the charger and / or the power consuming device according to the received signal, and prohibits the electric garden working vehicle from moving; the controller of the electric garden working vehicle determines whether the electric socket is connected to the working mechanism according to the received signal, and allows the electric garden working vehicle to move;

[0124] As Figure 26An electric work tool, exemplarily a hand-push lawn mower, comprises a mounting body, a work mechanism, and a battery pack, the work mechanism comprises a work motor, the work mechanism and the battery pack are arranged on the mounting body, and the battery pack supplies power for the work motor; the surface of the electric work tool is provided with an electric socket, a charger of the electric work tool charges the battery pack in the tool through the electric socket, and the electric work tool supplies power to an external power consumption device through the electric socket, and the power consumption device is electrically connected with the battery pack in the electric work tool through the electric socket.

[0125] The embodiment of the present application provides a computer readable storage medium, which stores computer executable instructions, and the computer executable instructions are configured to execute the battery control method for the electric garden work vehicle.

[0126] The embodiment of the present application provides a computer program product, which comprises a computer program stored on a computer readable storage medium, and the computer program comprises program instructions, and when the program instructions are executed by a computer, the computer executes the battery control method for the electric energy vehicle.

[0127] The computer readable storage medium described above can be a transitory computer readable storage medium or a non-transitory computer readable storage medium.

[0128] The technical solution of the embodiment of the present application can be embodied in the form of a software product, the computer software product is stored in a storage medium, and comprises one or more instructions to make a computer device (which can be a personal computer, a server, or a network device) execute all or part of the steps of the method described in the embodiment of the present application. The storage medium described above can be a non-transitory storage medium, including a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various media that can store program codes, and can also be a transitory storage medium.

[0129] The above description and drawings are illustrative of embodiments of the application and are not to be construed as limiting the application. Other embodiments can include structural, logical, electrical, process, and other changes. The embodiments are merely examples of the many possible embodiments of the application. Unless explicitly stated otherwise, individual components and functions are optional and the order of operations can vary. Parts and features of some embodiments can be included or replaced in or by parts and features of other embodiments. Also, the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. As used in the description of the embodiments and the claims, the article "a" is intended to include one or more articles, by use of "a" or "an," it is intended to include one or more embodiments. Also, as used in the description of the embodiments and the claims, the term "including" and variations thereof, means that existence of the features, integers, steps, operations, elements, and / or components noted are an option, and that not all of them are required, but that some embodiments can include, but not require, several of those specialties features, integers, steps, operations, elements, components, and / or combinations thereof. The phrase "consisting of" means an exclusive inclusion, that is, the listed components which are mandatory, not optional. The phrase "consisting essentially of" means the components which are mandatory, not optional, with the exception of other components of the application. The sentence "includes a..." means that other components can also be present in the process, method, or device. Each embodiment is focused on the differences from other embodiments, and the same or similar parts between embodiments can be mutually referred to. For the method, product, etc. disclosed in the embodiments, if it corresponds to the method part disclosed in the embodiments, the relevant part can be referred to the description of the method part.

[0130] Those skilled in the art can realize that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be realized in electronic hardware, or a combination of computer software and electronic hardware. Whether the functions are realized in hardware or software, it can depend on the specific application and design constraints of the technical solution. The skilled person can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of the embodiments of the application. The skilled person can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

[0131] In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, apparatuses, etc.) can be implemented in other manners. For example, the described device embodiments are merely illustrative. For example, the division of the units is merely logical function division. There can be another division manner for actual implementation. For example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections between different units, or among them, can be indirect couplings or communication connections through some interfaces, devices or units, and can be in electrical, mechanical or other forms.

[0132] The flowcharts and block diagrams in the drawings show the possible implementation architectures, functions and operations of the system, method and computer program product according to the embodiments of the present application. In this regard, each block in the flowcharts or block diagrams can represent a module, a program segment or a part of code containing one or more executable instructions for implementing the specified logical function. In some alternative implementations, the functions noted in the blocks can occur in different orders than those noted in the drawings. For example, two consecutive blocks can actually be executed substantially in parallel, and sometimes they can be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the drawings, the operations or steps corresponding to different blocks can also occur in different orders than those disclosed in the descriptions, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps can actually be executed substantially in parallel, and sometimes they can be executed in reverse order, depending on the functions involved. Each block in the block diagrams and / or flowcharts, and the combination of blocks in the block diagrams and / or flowcharts, can be implemented by a dedicated hardware-based system that performs the specified functions or actions, or can be implemented by a combination of dedicated hardware and computer instructions.

[0133] The above description is merely the preferred embodiments of the present application, and it should be pointed out that for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be considered as the protection scope of the present application.

Claims

1. An electric garden work vehicle, characterized in that The electrically operated garden working vehicle comprises: a mounting body, a traveling mechanism for driving the vehicle to travel, a working mechanism for performing a working function, and an energy source system for supplying electric power to the traveling mechanism and the working mechanism, wherein the traveling mechanism, the working mechanism, and the energy source system are all arranged on the mounting body; the energy source system comprises a first battery pack and a second battery pack, at least one of the first battery pack and the second battery pack is detachably connected to another cordless power tool for power supply; the electrically operated garden working vehicle is provided with an electric socket, a charger of the electrically operated garden working vehicle charges the battery pack in the vehicle through the electric socket, and the electrically operated garden working vehicle supplies electric power to an external electric device through the electric socket, wherein the electric device is electrically connected to the battery pack in the vehicle.

2. The electric garden work vehicle of claim 1, characterized in that, the first battery pack and the second battery pack are battery packs with different sizes and / or energy densities, and each of the battery packs comprises a shell, a plurality of battery cells accommodated in the shell, an electric connection joint for outputting electric energy, and a circuit board with a control circuit, wherein the circuit board is electrically connected to the battery cells and the electric connection joint, respectively.

3. The electrically powered garden work vehicle of claim 2, characterized in that the mounting body forms a battery compartment, the inner wall of the battery compartment is provided with a plurality of electric connection terminals and a track for matching connection with the battery pack, and the first battery pack and the second battery pack are pluggably arranged in the battery compartment through the track and supply electric power to the electrically operated garden working vehicle through the electric connection between the electric connection joint and the electric connection terminal.

4. The electrically powered garden vehicle of claim 1, characterized in that, the electrically operated garden working vehicle comprises an electric energy conversion device, wherein the electric energy conversion device comprises an inverter unit, the electric energy conversion device is electrically connected to the battery pack and the electric socket, respectively, and direct current of the battery pack is converted into alternating current by the inverter unit and output to an external AC wired electric device through the electric socket.

5. The electrically powered garden vehicle of claim 1, characterized in that, the electric socket is connected with an electric energy conversion device, an input end of the electric energy conversion device is connected with the electric socket, and an output end of the electric energy conversion device is electrically connected with a wired electric device.

6. The electrically powered garden vehicle of claim 5, characterized in that, the electric energy conversion device has a voltage boosting module and / or a voltage reducing module, the electric device is a wired electronic device powered by direct current, and the electric energy conversion device modulates direct current output by the electric socket into direct current voltage matching the electric device and outputs the direct current voltage to the electric device.

7. The electrically powered garden vehicle of claim 5, characterized in that, the electric energy conversion device has an inverter unit, the electric device is a wired electronic device powered by alternating current, and the electric energy conversion device converts direct current output by the electric socket into alternating current and delivers the alternating current to the electric device.

8. The electrically powered garden-vehicle of claim 1, characterized by the electric device is a wired electronic device powered by direct current, the direct current voltage output by the electric socket is the same as the working voltage of the electric device, the electric socket is connected to the electric device through a power line with an adapter, and the electric energy of the first battery pack and / or the second battery pack is output to the electric device through the electric socket.

9. The electrically powered garden-vehicle of claim 1, characterized by the electric socket has a communication terminal, a charger of the electrically operated garden working vehicle and / or an electric device are in communication connection with a control module in the vehicle through the communication terminal, and the control module in the vehicle identifies the type of product connected to the electric socket according to the received signal.

10. The electrically powered garden-vehicle of claim 1, characterized by The charger and / or the power consuming device are connected with the electrical outlet through an electrical plug, the electrical outlet has a voltage signal detection terminal, the electrical plug has a micro switch inside which is operatively connected with the voltage signal detection terminal, and the surface of the electrical plug has a button which controls the opening and / or closing of the micro switch, the micro switch is in an open state during the process of installing the electrical plug into the electrical outlet and removing the electrical plug from the electrical outlet.

11. The electrically powered garden vehicle of claim 10, characterized in that, The electrical outlet 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 with the electrical outlet, the first positive connection terminal is connected with the second positive connection terminal, and the first negative connection terminal is connected with the second negative connection terminal; the control module of the electric garden working vehicle and / or the charger controls the conduction or closing of the positive and negative connection circuit according to the voltage signal detected by the voltage signal detection terminal.

12. The electrically powered garden-vehicle of claim 1, characterized by The electric garden working 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 arranged in the control circuit, the control module is in communication connection with the battery pack, and the control module selectively opens or closes the discharge control switch element according to the received battery pack information to control the discharge sequence of each battery pack.

13. The electrically powered garden vehicle of claim 12, characterized in that, The battery pack information received by the control module includes voltage value information of the battery pack, and the control module selectively opens or closes the discharge control switch element according to the received battery pack voltage value to control the discharge sequence of each battery pack; wherein The control module controls the first battery pack with a higher voltage value in the energy source system to discharge first in the discharge phase, and controls the first battery pack and the second battery pack to discharge simultaneously when the voltage difference between the second battery pack and the first battery pack is less than a threshold value.

14. The electrically powered garden vehicle of claim 12, characterized in that, The battery pack information received by the control module includes state of charge information of the battery pack, and the control module selectively opens or closes the discharge control switch element according to the received battery pack state of charge information to control the discharge sequence of each battery pack; wherein The control module controls the first battery pack with a higher state of charge in the energy source system to discharge first in the discharge phase; The control module controls the first battery pack and the second battery pack to discharge simultaneously when the state of charge difference between the second battery pack and the first battery pack is less than a threshold value.

15. The electrically powered garden vehicle of claim 12, characterized in that, The control module controls at least one battery pack with a higher evaluation value in the energy source system to discharge first in the initial discharge phase; and controls the battery pack whose voltage exceeds the bus voltage of the power consuming device to discharge together when the voltage of other battery packs in the energy source system exceeds the bus voltage of the power consuming device.

16. The electrically powered garden vehicle of claim 15, characterized in that, The evaluation value is determined according to at least one state parameter information of the battery pack; The state parameter information of the battery pack includes voltage information, capacity information, charge information, internal resistance information and health state information.

17. The electrically powered garden vehicle of claim 16, characterized in that, The evaluation value is determined based on at least one state parameter information of the battery pack through weighted summation or weighted average.

18. The electrically powered garden-vehicle of claim 15, characterized by The at least one battery pack with a higher evaluation value includes the battery pack with the highest evaluation value and the battery pack with a difference from the highest evaluation value within a preset difference range.

19. The electrically powered garden-vehicle of claim 15, characterized by The control circuit further includes a bus voltage monitoring component for monitoring the load bus voltage, and when the load bus voltage of the energy source system rises and exceeds the voltage of the battery pack, the control module controls the battery pack to stop discharging.

20. The electrically powered garden-vehicle of claim 12, characterized by, The first battery pack and the second battery pack are operatively connected in parallel to a control module of the electric garden working vehicle, and the control module selectively controls the power output of the first battery pack and the second battery pack through a discharge control switch element.

21. The electrically powered garden vehicle of claim 20, characterized in that, The control circuit includes a first circuit branch connected with the first battery pack and a second circuit branch connected with the second battery pack; The control module controls the first circuit branch to be turned on to make the first battery pack discharge and / or controls the second circuit branch to be turned on to make the second battery pack discharge.

22. The electrically powered garden vehicle of claim 21, characterized in that, The first circuit branch and the second circuit branch are both provided with a first MOS tube and a second MOS tube; The first battery pack is sequentially connected in series with the first MOS tube and the second MOS tube in the first circuit branch; The second battery pack is sequentially connected in series with the first MOS tube and the second MOS tube in the second circuit branch; wherein, The first MOS tube and the second MOS tube both include a body diode, and the conduction direction of the body diode of the first MOS tube is opposite to the conduction direction of the body diode of the second MOS tube.

23. The electrically powered garden vehicle of claim 22, characterized in that, The first MOS tube is a charging switch, and the conduction direction of the body diode in the first MOS tube is consistent with the direction of the discharge current; the second MOS tube is a discharge switch, and the conduction direction of the body diode in the second MOS tube is consistent with the direction of the charging current.

24. The electrically powered garden-vehicle of claim 12, characterized by, During the power supply from the battery pack in the electric garden working vehicle to the external power device, if a battery pack is added / removed, the control module updates the battery pack registration table, and continues to control the discharge based on the updated registration table.

25. An electrically powered garden work vehicle characterized by Comprising: a mounting body, a walking mechanism for driving the vehicle to walk, a working mechanism for performing a working function, and an energy source system for supplying power to the walking mechanism and the working mechanism, wherein the walking mechanism, the working mechanism, and the energy system are all arranged on the mounting body; The energy source system includes a battery pack. The electric garden working vehicle has an electrical socket, a charger of the electric garden working vehicle charges the battery pack in the electric garden working vehicle through the electrical socket, and the electric garden working vehicle supplies power to the external power device through the electrical socket, and the external power device is electrically connected with the battery pack in the vehicle through the electrical socket.

26. The electrically powered garden vehicle of claim 25, characterized in that, The battery pack is originally designed as a power source of a cordless electric tool, the mounting body is formed with a battery compartment, the battery pack is detachably installed in the battery compartment, and the battery pack can be detached from the battery compartment on the electric garden working vehicle and installed in the electric tool.

27. An electrically powered garden work vehicle characterized by Comprising: The mounting body, the traveling mechanism for driving the vehicle to travel, the work mechanism for performing a work function, and the battery pack, the work mechanism being detachably connected to the mounting body, the battery pack being detachably mounted in the mounting body and supplying electric power to the traveling mechanism and the work mechanism, the traveling mechanism supporting the mounting body; The vehicle body of the electric garden work vehicle has an electric socket, the work mechanism has a work motor and an electric plug, and the electric socket and the electric plug are plug-in connectable to realize the electrical connection between the work motor and the battery pack; In the case that the electric plug of the work mechanism and the electric socket of the vehicle body are disconnected, the charger of the electric garden work vehicle is electrically connectable to the electric socket to charge the battery pack in the electric garden work vehicle.

28. The electrically powered garden vehicle of claim 27, characterized in that, The electric garden work vehicle supplies electric power to external electric devices through the electric socket, the electric devices being AC wired electric devices or DC wired electric devices, and the electric energy of the battery pack is output to the electric devices through the electric socket, the electric devices being different from the work mechanism.

29. The electrically powered garden vehicle of claim 28, characterized in that, An electric energy conversion device is further provided between the electric devices and the connecting circuit of the electric socket, and the electric energy conversion device converts the electric energy output through the electric socket into alternating current or direct current suitable for the electric devices.

30. The electrically powered garden-vehicle of claim 28, characterized by The electric socket has communication terminals, and the charger, the work mechanism, and the electric devices of the electric garden work vehicle are selectively communicatively connected to the control module in the electric garden work vehicle through the communication terminals, and the control module identifies the type of the equipment connected to the electric socket according to the received communication signals.

31. The electrically powered garden vehicle of claim 30, characterized in that, The communication mode between the electric garden work vehicle and the charger, the work mechanism, and the electric devices includes at least one of a CAN communication interface, an RS485 serial port, and a UART communication interface.

32. The electrically powered garden vehicle of claim 30, characterized in that, When the control module of the electric garden work vehicle judges that the electric socket is connected to a non-work mechanism according to the received communication signals, the electric garden work vehicle is prohibited from traveling.

33. An electrically powered garden work vehicle characterized by Comprise: The mounting body, the traveling mechanism for driving the vehicle to travel, the work mechanism for performing a work function, and the battery pack, the work mechanism being detachably connected to the mounting body, the battery pack being detachably mounted in the mounting body and supplying electric power to the traveling mechanism and the work mechanism, the traveling mechanism supporting the mounting body; The electric garden work vehicle has an electric socket, the charger of the electric garden work vehicle charges the battery pack in the vehicle through the electric socket, and the electric garden work vehicle supplies electric power to external electric devices through the electric socket; When the controller of the electric garden work vehicle judges that the electric socket is connected to the charger and / or the electric devices according to the received signals, the electric garden work vehicle is prohibited from traveling.

34. The electrically powered garden vehicle of claim 33, characterized in that, The battery pack is originally designed as the power supply of a cordless electric tool, the battery pack is detachably mounted on the electric garden work vehicle, and the battery pack can be detached from the electric garden work vehicle and mounted on the cordless electric tool.

35. The electrically powered garden vehicle of claim 33, characterized in that, The electric garden work vehicle is a riding mower, the work mechanism is a mowing mechanism, and the work motor is a cutting motor for driving the mowing blade to rotate.

36. An electrically powered wheeled vehicle characterised by Comprise: The installation main body, the traveling mechanism for driving the vehicle to travel, and the battery pack for supplying electric power to the traveling mechanism, wherein the traveling mechanism and the battery pack are provided to the installation main body. The surface of the electrically powered vehicle is provided with an electric socket, and a charger of the electrically powered vehicle charges the battery pack in the vehicle through the electric socket, and the electrically powered vehicle supplies electric power to an external wired electric device through the electric socket, and the wired electric device is electrically connected to the battery pack in the vehicle through the electric socket.

37. The electrically powered wheeled vehicle of claim 36, wherein, The electrically powered vehicle includes a plurality of battery packs which are originally designed as power sources of cordless electric power tools, and the installation main body is formed with a battery compartment, and the plurality of battery packs are detachably installed in the battery compartment of the electrically powered vehicle and can be detached from the battery compartment to be installed on other cordless electric power tools.

38. The electrically powered wheeled vehicle of claim 36, wherein, The electrically powered vehicle includes a riding lawn mower, an electric golf cart, an all-terrain vehicle, or an electric motorcycle, and the cordless electric power tool includes a handheld electric power tool and a handheld garden tool.

39. A power tool, comprising: The electrically powered working tool includes a riding lawn mower, an electric golf cart, an all-terrain vehicle, or an electric motorcycle, and the cordless electric power tool includes a handheld electric power tool and a handheld garden tool.

40. The power tool of claim 39, wherein, The electrically powered working tool includes a riding lawn mower, an electric golf cart, an all-terrain vehicle, or an electric motorcycle, and the cordless electric power tool includes a handheld electric power tool and a handheld garden tool.

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