WO2020147841A1

WO2020147841A1 - Mower and wheeled moving vehicle

Info

Publication number: WO2020147841A1
Application number: PCT/CN2020/072788
Authority: WO
Inventors: 乔勇
Original assignee: 苏州宝时得电动工具有限公司
Priority date: 2019-01-18
Filing date: 2020-01-17
Publication date: 2020-07-23
Also published as: CN111448884A; CN212696647U

Abstract

A mower (100) comprises a frame (1), wheels (2), a cutting member (16), a functional element for driving the wheels (2) and the cutting member (16), and a power source supplying power to the functional element. The power source comprises a first power source module (5) fixedly installed at the frame (1) and a second power source module (6) detachably installed at the frame (1). The mower (100) is configured such that power can be supplied thereto solely from the first power source module (5) or the second power source module (6), or the first power source module (5) and the second power source module (6) cooperate to supply power to the mower . Addition of the second power source module expands a working range of the mower in one operation, enhances endurance of the mower, and facilitates quick charging of the mower. Moreover, the second power source module can be detached and functions as an independent unit to supply power to main bodies of different electric-powered tools, thereby increasing a utilization rate of the second power source module, and increasing an input-output ratio for a user. Also disclosed is a wheeled moving vehicle.

Description

Lawn mower and wheeled mobile vehicle

This application claims the priority of the Chinese patent application whose application date is January 18, 2019 and the application number is 201910049205.1, the entire content of which is incorporated into this application by reference.

Technical field

The present invention relates to the technical field of lawn mowers, in particular to a lawn mower with a movable power module.

Background technique

Lawn mowers are used for mowing and maintenance of lawns. Different types of lawn mowers are used for different terrain environments. For example, riding lawn mowers are often used for large-area terrains such as golf courses or football stadiums that require high pruning, which is more convenient and more efficient.

The existing riding mowing is generally divided into gasoline-driven and electric-driven. Compared with gasoline-driven, electric-driven has many advantages of quieter, more environmentally friendly and simpler structure. It is gradually replacing gasoline-driven, but electric-driven The formula also has the following disadvantages:

1. Limited by the battery power, the lawn mower has limited battery life, and the area for a single trimming is small;

2. The operator should always pay attention to the amount of battery power to avoid the situation that the battery is exhausted and does not return to the charging point. If such a situation occurs, the operator needs to manually push the entire lawn mower back to charge, which is laborious and time-consuming.

In view of this, it is necessary to provide an improved lawn mower to overcome the existing shortcomings.

Summary of the invention

Based on this, it is necessary to provide a lawn mower with better battery life and more convenient charging in response to the above technical problems.

To achieve the above objective, the present invention adopts the following technical solutions: a lawn mower, including a frame, wheels installed under the frame, cutting parts, functional components that drive the wheels and the cutting parts, and The power source provided by the functional component,

The power source includes a first power module fixedly installed on the frame, and a second power module detachably installed with the frame;

The lawn mower is configured to be powered by only the first power module, or only by the second power module, or be powered by the first power module and the second power module in cooperation .

As a further improvement of the present invention, the first power module is a built-in battery installed on the frame, and the second power module is a general-purpose battery, and the general-purpose battery is suitable for being installed in other electric tools to provide power for them .

As a further improvement of the present invention, the vehicle frame is also provided with a charging structure for connecting an external power source to charge the first power module and the second power module,

The first power supply module is configured to charge it through the charging structure;

The second power module is configured to be separated from the vehicle frame to be charged by a charging device to supplement energy, or it may be installed on the vehicle frame to charge it through the charging structure.

As a further improvement of the present invention, the charging structure includes a charging interface for charging the first power module and the second power module;

Alternatively, the charging structure includes a first charging interface and a second charging interface respectively used to charge the first power module and the second power module.

As a further improvement of the present invention, a power supply installation part for receiving the second power supply module is provided on the frame, and the power supply installation part is provided with a sliding groove or a sliding rail,

The second power supply module is provided with an electrical energy output port, and the power supply installation part is provided with an electrical energy input port that is connected to the electrical energy output port,

The second power module is slidably installed along the sliding groove or the sliding rail to realize the combination with the power installation part.

As a further improvement of the present invention, the lawn mower is a riding lawn mower, and a support structure for supporting an operator is provided on the frame.

As a further improvement of the present invention, the functional components include a walking motor and a cutting motor, the walking motor drives the wheels to realize the walking function of the lawn mower, and the cutting motor drives the cutting member to realize the mowing. The cutting function of the machine,

The operating state of the lawn mower includes a first state where the walking motor and the cutting motor work at the same time, and a second state where only the walking motor works.

As a further improvement of the present invention, when the lawn mower is in the first state,

Only the first power supply module supplies power; or

Only the second power module provides power; or

The first power supply module and the second power supply module cooperate to supply power, and the first power supply module and the second power supply module supply power in sequence; or the first power supply module and the second power supply module supply power at the same time.

As a further improvement of the present invention, when the first power module and the second power module cooperate to supply power,

The first power supply module and the second power supply module simultaneously supply power to the walking motor and the cutting motor; or

The first power module first supplies power to the walking motor and the cutting motor, and when the power reaches a preset value, the first power module stops supplying power, and the second power module is the walking motor and the cutting motor, or

The first power module provides power for the walking motor and the cutting motor, and the second power module only provides power for the walking motor; or

The first power module only supplies power for the cutting motor, and the second power module only supplies power for the walking motor; or

The first power supply module only supplies power for the cutting motor, and the second power supply module supplies power only for the walking motor. When the second power supply module reaches a preset value, the second power supply stops supplying power, and the first power supply is simultaneously The cutting motor and the walking motor supply power.

As a further improvement of the present invention, when the lawn mower is in the second state,

Only the first power supply module supplies power; or

Only the second power module provides power; or

The first power module and the second power module simultaneously supply power to the walking motor; or

The first power module first supplies power to the walking motor. When the power of the first power module is lower than a preset value, the first power module stops supplying power, and the second power module supplies power to the walking motor.

As a further improvement of the present invention, the first power module can supply power to the walking motor and the cutting motor, the second power module can only supply power to the walking motor, and the first power module and the second The power supply modules supply power sequentially, or the first power supply module and the second power supply module supply power at the same time.

As a further improvement of the present invention, the first power supply module and the second power supply module supply power in sequence,

The first power supply module first supplies power, and after the power of the first power supply module is lower than a preset value, the first power supply module stops supplying power and the second power supply module supplies power.

As a further improvement of the present invention, the lawn mower further includes a protection unit configured to limit the cutting motor after the power of the first power supply module is lower than a preset value, so that the cutting motor stops working.

As a further improvement of the present invention, the first power module can supply power to the walking motor and the cutting motor, and the second power module can also power the walking motor and the cutting motor. The two power modules supply power in sequence, or the first power module and the second power module provide power at the same time.

As a further improvement of the present invention, the lawn mower further includes a control unit,

The control unit can obtain power information of the first power module and the second power module,

The control unit controls the power supply of the first power module and the second power module according to the power information.

The control unit includes

A cutting control unit, which is connected to the cutting motor to control the cutting motor;

A walking control unit, which is connected to the walking motor to control the walking motor;

A first power module control unit, the first power module control unit is connected to the first power module to obtain power information of the first power module and control the power supply of the first power module;

A second power supply module control unit, where the second power supply module control unit is connected to the second power supply module to obtain power information of the second power supply module and control the power supply of the second power supply module;

The cutting control unit, the walking control unit, the first power module control unit, and the second power module control unit are communicatively connected to control the power supply of the first power module and the second power module according to power information.

As a further improvement of the present invention, a preset value of the power of the first power module is prestored in the control unit,

When the power of the first power module is greater than the preset value, the control unit controls the first power module to supply power through the first power module, and the control unit controls the second power module , So that the second power module does not supply power;

When the power of the first power supply module is lower than the preset value, the control unit controls the first power supply module so that the first power supply module does not supply power, and the control unit controls the second power supply Module to supply power through the second power module.

As a further improvement of the present invention, the first power module is a single battery pack, or

The first power module includes a plurality of battery packs, and a plurality of the battery packs are independently connected in series in the first power module, so that the first power module can obtain a higher voltage than any single battery pack ；

Or, a plurality of the battery packs can be selected in parallel in the first power module independently, so that the first power module can obtain a larger capacity than any single battery pack.

As a further improvement of the present invention, the second power supply module is a single battery pack, or

The second power supply module includes a plurality of battery packs, and the plurality of battery packs are independently connected in series within the second power supply module, so that the second power supply module can obtain a higher voltage than any single battery pack ；

Alternatively, a plurality of the battery packs can be independently connected in parallel in the second power module, so that the second power module can obtain a larger capacity than any single battery pack.

As a further improvement of the present invention, the second power module includes two battery packs, the voltage of the two battery packs is the same, and the two battery packs are connected in series.

As a further improvement of the present invention, the rated voltage of the battery pack is 36-230V, and the rated voltage of the battery pack is 12-80V.

As a further improvement of the present invention, the second power supply module includes a plurality of battery packs, the second power supply module includes a casing, and the plurality of battery packs are supported in the casing, and the casing is provided with an electric energy output port After a plurality of said battery packs are independent of each other, they output energy through the electric energy output port after being selected in series or parallel.

As a further improvement of the present invention, the power supply mounting portion includes a drawing housing that can be slid and drawn on the frame, the power input port is located in the drawing housing, and the second power module is installed in The drawing housing.

As a further improvement of the present invention, the power supply installation part is a docking space opened on the vehicle frame for the second power module to be inserted into, and an electric power input port is provided at the bottom of the docking space.

As a further improvement of the present invention, the lawn mower is further provided with an output electrical interface electrically connected to the first power module and/or the second power module, and the output electrical interface is configured to output DC power and/or AC Electric energy, used to power or charge other devices.

As a further improvement of the present invention, the lawn mower is also provided with an output port electrically connected to the first power module and/or the second power module, and the output port is configured to output DC power for other DC device power supply or charging;

The lawn mower should include an accessory structure electrically connected to the output port, and the accessory structure is used to connect with the output port to convert the DC electric energy into AC electric energy, and the accessory structure is provided with There is an output electrical interface to output the AC electric energy to supply power or charge other AC devices.

As a further improvement of the present invention, the voltage of the AC electrical energy may be AC110-240V, and the AC voltage may be AC110, AC120, AC230;

The voltage of the DC electric energy may be DC20-120V, and the DC voltage may be DC20V, DC40V, DC60V, DC80V, DC120V.

As a further improvement of the present invention, the lawn mower further includes a monitoring circuit for monitoring the power of the first power supply module and the second power supply module.

As a further improvement of the present invention, the first power supply module and the second power supply module are DC power supplies.

The present invention also provides a method for controlling a lawnmower as described above, the lawnmower further includes a control unit, and the control method protects the following steps:

Acquiring the power information of the first power module and transferring it to the control unit;

Acquiring the power information of the second power module and transferring it to the control unit;

The control unit processes the power information and outputs corresponding instructions to the first power supply module and the second power supply module.

The control unit determines the power information and the preset value of the first power module,

When the power of the first power module is greater than the preset value, the control unit sends an instruction to the second power module so that the second power module does not supply power;

When the power of the first power module is not greater than the preset value, the control unit sends an instruction to the first power module so that the first power module does not supply power.

As a further improvement of the present invention, the functional components include walking motors and cutting motors,

When the power of the first power module is lower than the preset value, the control unit sends an instruction to the cutting motor so that the cutting motor does not run.

The present invention also provides a wheeled mobile vehicle, which includes a frame, wheels installed under the frame, functional components that drive the wheels, and a power source that provides power to the functional components,

The power source includes a first power module installed on the frame, and a second power module movably installed with the frame;

The wheeled mobile vehicle is configured to be powered by only the first power module, or only by the second power module, or be provided by the first power module and the second power module in cooperation power.

As a further improvement of the present invention, the power supply installation part is a box body arranged on the frame, and the second power supply module is detachably installed in the box body.

As a further improvement of the present invention, the first power supply module and the second power supply module are connected in parallel.

As a further improvement of the present invention, the first power supply module and the second power supply module can supply power in sequence; or the first power supply module and the second power supply module can supply power at the same time.

As a further improvement of the present invention, when the first power supply module and the second power supply module supply power in sequence,

The first power supply module first supplies power, and after the power reaches a preset value, the first power supply module stops supplying power, and the second power supply module supplies power.

As a further improvement of the present invention, the wheeled mobile vehicle further includes a control unit that obtains the power information of the first power supply module and the second power supply module,

As a further improvement of the present invention, the wheeled mobile vehicle may be a lawn mower, a scooter, or an electric bicycle.

The present invention also provides a wheeled mobile vehicle, including a frame, wheels installed under the frame, functional components that drive the wheels, and a power source that provides power to the functional components. The power source includes The first power module on the frame is provided with a power installation part for receiving the second power module on the frame, so that the wheeled mobile vehicle can be configured to be powered by the second power module only. A power module provides power, or only the second power module provides power, or the first power module and the second power module cooperate to provide power.

As a further improvement of the present invention, the wheeled mobile vehicle is a lawn mower, and the wheeled mobile vehicle further includes a cutting part; or the wheeled mobile vehicle is a scooter; or the wheeled mobile vehicle is an electric bicycle .

Compared with the prior art, the lawn mower is equipped with a second power module to increase the power, and can cut a wider range in a single time, and has better endurance; and the second power module can be removed from the frame The upper part is separated and charged separately to avoid the situation that the entire lawn mower cannot return without power, and the charging is more convenient; in addition, the second power module can also be disassembled as an independent individual to supply power to different power tools, which improves the The utilization rate of the power module improves the user's input-output ratio.

BRIEF DESCRIPTION

Figure 1 is a schematic diagram of the structural module of the lawn mower provided by the present invention;

Figure 2 is a schematic diagram of the structural module of another lawn mower provided by the present invention;

Figure 3 is a front view of another lawn mower provided by the present invention;

Figure 4 is a top view of the cutting member of the lawn mower of the present invention;

Figure 5 is a structural diagram of an embodiment of a second power supply module of the lawn mower of the present invention;

Figure 6 is a partial view of the power supply installation part of the lawn mower of the present invention;

Fig. 7 is a block diagram of the control unit of the lawn mower of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

It should be noted that when a component is referred to as being "mounted on" another component, it can be directly on the other component or a central component may also exist. When a component is considered to be "set on" another component, it may be set directly on another component or there may be a centered component at the same time. When a component is considered to be "fixed" to another component, it can be directly fixed to the other component or a centered component may exist at the same time.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of the present invention. The terminology used in the description of the present invention herein is for the purpose of describing specific embodiments, and is not intended to limit the present invention. The term "or/and" as used herein includes any and all combinations of one or more related listed items.

Referring to FIGS. 1-3, the present invention provides a lawn mower 100. The lawn mower 100 includes a frame 1, a wheel installed under the frame 1, a cutting member 16, a driving wheel 2 and functional components of the cutting member 16. , A power source that provides power for the functional components. The lawn mower 100 drives the wheels 2 through the functional components to achieve its walking function, and drives the cutting member 16 through the functional components to achieve its cutting function. The lawn mower is a wheeled mobile vehicle. This application is not limited to protecting the lawn mower, but also includes other wheeled mobile vehicles, such as scooters, electric bicycles and other mobile vehicle structures.

As shown in Fig. 3, the frame 1 is the skeleton of the lawn mower 100, and its overall shape is similar to the shape of the tractor head. The wheels 2, cutting parts 16, functional parts, power source and other devices are all installed on the frame 1, and the operator is always on the frame 1 during the operation of the lawn mower 100. The lawn mower 100 of the present application is a This riding lawn mower 100, compared with the traditional hand-push lawn mower 100, avoids the operator's walking behind the lawn mower 100 and the need to exert force to control the walking of the lawn mower 100, which is more convenient and labor-saving. . The frame 1 needs to be made of a metal material with a certain strength to meet its strength requirements and take into account cost control. The metal material is preferably steel.

The wheel 2 is installed under the frame 1 to realize the walking function of the lawn mower 100. In this application, the forward and backward direction of the lawn mower 100 is taken as the forward and backward direction, and the forward and backward movement of the lawn mower 100 is located on a horizontal plane and perpendicular to the lawn mower 100. The direction is left and right. The wheel 2 may be a conventional tire type wheel or a crawler type wheel.

The wheel 2 includes a driving wheel driven by functional components and a driven wheel driven by the driving wheel. There can be one or a pair of driving wheels. The number of wheels 2 may be three or four. When there are three wheels 2, the wheels 2 may include one front wheel and two rear wheels. Preferably, the number of wheels 2 is four, including a pair of front wheels and a pair of rear wheels, and a pair of rear wheels are driving wheels, a pair of front wheels are driven wheels, and the rear wheels as driving wheels can achieve better acceleration. , Climbing ability, and the operator is generally located in the middle and rear part of the frame 1 to obtain a better operating perspective. The rear-wheel drive makes the center of gravity of the lawn mower 100 deviate, and the operator can be more comfortable.

The frame 1 is also equipped with a direction control assembly, a speed control assembly, and a support structure 7 supporting the operator. The operator is located on the support structure 7 to operate the direction control assembly to control the walking direction of the lawn mower 100, and the operating speed control assembly controls the cutting The walking speed of the lawn mower 100.

The wheel 2 includes a reversing wheel. The reversing wheel may be part of the wheel 2 or all the wheels 2. The direction control component controls the reversing wheel to realize the lawn mower 100 to change the walking direction at a turning radius. The turning radius can be zero. At this time, the lawnmower 100 realizes zero-degree steering, that is, it can turn 0-360 degrees on the spot. It can be achieved by turning the wheels in opposite directions and the rotation speed is the same; it can also be a non-zero value. Steering can be achieved through wheel speed difference. The direction control component can be a steering wheel, which drives the reversing wheel to steer by turning the steering wheel; it can also be a direction control rod, which drives the reversing wheel to steer by operating the direction control rod.

In one embodiment, the direction control component is a steering wheel, the wheel 2 includes a pair of front wheels and a pair of rear wheels, and the reversing wheels are a pair of front wheels. By controlling the pair of front wheels, conventional steering with a non-zero turning radius is achieved. In another embodiment, the direction control component is a direction control lever, and the wheel 2 includes a pair of front wheels and a pair of rear wheels, both of which are reversing wheels. You can control all reversing wheels to achieve zero-degree steering. Of course, you can also choose to achieve conventional Steering. Preferably, when realizing the two different steerings of zero degree steering and conventional steering, the operator controls the direction control lever through two different operation methods, but it is not limited to this. There can also be two direction control levers, one for zero degree steering , The other realizes conventional steering. The combination of the direction control component and the reversing wheel is not limited to the above two types, and other combinations are also possible. In addition, the direction control assembly also includes a structure that enables the lawn mower 100 to walk backward.

The speed control assembly controlling the lawn mower 100 may be in the form of a foot-controlled pedal or a manually-controlled speed control lever, which is not limited here. For example, when the speed control component may only include a pedal component, the pedal component may include an accelerator pedal and a brake pedal. When the speed control component only includes a speed control lever, the functions of acceleration and braking can be realized by one speed control lever, or the functions of acceleration and braking can be realized by two different speed control levers. The speed control component can also be a combination of a pedal and a speed control lever, including a speed control lever to control acceleration, and a pedal to achieve a braking function.

The lawn mower 100 can realize the stepless speed regulation of its speed through the speed control component, but it is not limited to this. The frame 1 can also be provided with a gear component, and the low, medium and high grade can be limited by the gear component, and the lawn mower 100 passes The speed control component can realize speed regulation in the set low, middle and high ranges.

The support structure 7 can be a seat, and the operator sits on the seat to perform operations, which is more convenient. The supporting structure 7 can also be a standing platform, and the operator can stand on the standing platform. At this time, since there is no need to set up seats, the structure of the lawn mower 100 can be more compact and simple, and the cost is lower.

In one embodiment, the speed control component is an accelerator pedal and a brake pedal, the support structure 7 is a seat, and the direction control component is a steering wheel. It is more convenient for the operator to sit on the seat to perform operations.

In other embodiments, the direction control assembly is a direction control rod. Compared with the structure with a steering wheel, the structure of the lawn mower 100 can be simpler; the speed control assembly includes a speed control rod for controlling acceleration, and the support structure 7 is a seat When the speed control component also includes a pedal for realizing the braking function; when the supporting structure 7 is a standing platform, the speed control component also includes another speed control rod for realizing the braking function, which prevents the operator from standing The platform needs to be operated with feet, resulting in an inability to stand firm.

The above-mentioned direction control component and speed control component are all mechanical structures, but they are not limited to this. The lawn mower 100 can also include a control panel. The direction control component and the speed control component may include electronic structures. The control panel is connected to the electronic structure and electronically controls the walking direction and speed of the lawn mower 100.

As shown in FIG. 4, the cutting member 16 may be one or more, which are installed under the frame 1 to realize the mowing function of the lawn mower 100. Preferably, the cutting member 16 adopts a double-blade disc structure to ensure its cutting performance. The lawn mower 100 also includes a cutting control assembly and a height adjustment assembly. The operator controls the opening and closing of the cutting element 16 and the rotation speed of the cutting element 16 through the cutting control assembly, and controls the cutting height of the cutting element 16 through the height adjustment assembly. The cutting control component can be realized by setting a mechanical gear switch, or can be realized by a control panel, which is not limited here.

The functional components include motors that provide power to the wheel 2 and the cutting member 16 respectively. The motor is a DC motor, and its rated voltage can be between 36V and 230V, such as 36V, 60V, 80V, 120V, 160V, 230V. In addition, it is better to use a DC brushless motor for the DC motor, and its overall life is longer.

Specifically, the motors are divided into a walking motor 4 and a cutting motor 9. The walking motor 4 drives the wheels to realize the walking function of the lawn mower 100, and the cutting motor 9 drives the cutting member 16 to realize the cutting function of the lawn mower 100. The two motors are independent of each other. run. In addition, the control of the cutting function and the control of the walking function of the lawn mower 100 are independent of each other and do not interfere with each other. That is, the lawn mower 100 can only walk without cutting, or cut while walking, or cut without walking. The cutting motor 9 may include one or more motors. The total output power of the walking motor 4 is not more than 2500W, and the total output power of the cutting motor 9 is not more than 4000W. Preferably, the lawn mower 100 further includes a safety switch, and only after the safety switch is closed can the control of the cutting function and the walking function be realized, so as to avoid injury caused by the user's misoperation.

The rear side of the frame 1 is also provided with a grass collecting box, which is used to collect grass clippings produced by the cutting element 16 cutting grass. The grass collecting box and the frame 1 are detachable to facilitate the operator to dump grass clippings.

The power source is a DC power source adapted to a DC motor, which includes a first power module 5 installed in the frame, and at least one second power module 6 detachably installed with the frame. The lawn mower 100 is configured to be powered by only the first power module 5, or only by the second power module 6, or be powered by the first power module 5 and the second power module 6 at the same time. The first power supply module 5 and the second power supply module 6 are arranged in parallel in the circuit, or are arranged in the circuit independently of each other, and the two can also be connected in series.

Specifically, the first power module 5 is fixedly installed in the frame 1 and is actually a built-in battery. The first power supply module can be a single battery pack 51 or multiple battery packs 51. Several battery packs 51 are independently connected in series within the first power supply module 5, so that the first power supply module 5 can be relatively arbitrary. The battery pack 51 has a higher voltage; or several battery packs 51 can be independently connected in parallel in the first power supply module 5, so that the first power supply module can obtain a larger capacity than any single battery pack 51. The battery pack 51 is composed of several battery cells, which can be lithium batteries, nickel-hydrogen batteries, nickel-cadmium batteries, graphene batteries or lithium iron phosphate, etc., which are not limited here. A single battery pack 51 can accommodate more power at a lower cost to satisfy the operation of the lawn mower 100, and the cost performance is greater. The rated voltage of a single battery pack 51 is 36V-230V, preferably 48V or 80V.

The second power module 6 is detachably and movably installed with the vehicle frame 1. The vehicle frame 1 is provided with a power installation part 13 for receiving the connection of the second power module 6 to provide power. As shown in FIG. 6, the power installation part 13 is provided with a sliding groove or a sliding rail structure 134, and the second power module 6 is slidingly installed through the sliding groove or the sliding rail structure 134 to realize the combination of the second power module 6 and the power installation part 13 . Figure 6 shows a slide rail structure. The power supply mounting portion 13 may be a mounting slot, a accommodating cavity for accommodating the second power supply module 6 or another connection structure that can movably mount the second power supply module 6 on the frame 1. The second power module 6 is provided with an electrical energy output port, and the power supply installation portion 13 is provided with an electrical energy input port that is connected to the electrical energy output port. The power input port may include a wiring bar electrically connected to the second power module 6. The wiring bar includes a number of connection terminals fixed in the base by a base machine with a butting surface, and the second power module 6 is installed in the mounting part. The power output port of the second power module 6 is matched with the mating surface, and is electrically connected to the corresponding connection terminal.

In some embodiments, the power supply installation portion 13 includes a drawing housing 61 that can be slid and drawn on the frame 1, the power input port is located in the drawing housing 61, and the second power module 6 is installed in the drawing housing 61 And the electric energy output port is electrically connected with the electric energy input port.

The detachable form of the second power supply module 6 and the frame 1 can also be other. For example, when the power supply installation part 13 is provided in the frame 1 for the second power supply module 6 to insert the docking space, the bottom of the docking space is provided with the first The connecting terminals etc. which are electrically connected to the second power module 6, or the power installation part 13 is a box body arranged on the frame, and the second power module is detachably installed in the box body, which is not limited here. However, it is necessary to consider the reliability, convenience, airtightness, dustproofness, waterproofness and other factors of the connection between the second power supply module 6 and the frame 1 and comprehensively consider the design.

By setting the second power module to increase the power, a wider range can be trimmed at a time, and the endurance is better; and the second power module can be separated from the frame for charging separately, avoiding the entire lawn mower from being unable to return without power In this case, charging is more convenient; in addition, the second power module can also be disassembled as an independent individual to supply power to different power tools, which improves the utilization rate of the second power module and improves the user's input-output ratio.

The second power module 6 may be electrically connected to the power output port of the single battery pack 62 and the power input port. Preferably, the voltage of the single battery pack 62 is 12-80V, and preferably, the voltage of the single battery pack 62 is 20V. The second power supply module 6 can also be a whole composed of a number of battery packs 62. The plurality of battery packs 62 are independently connected in series within the second power supply module 6, so that the second power supply module 6 can be relatively arbitrary. The battery pack 62 has a higher voltage; or several battery packs 62 can be independently connected in parallel in the second power module 6 so that the second power module 6 can obtain a larger capacity than any single battery pack 62. The single battery pack 62 may be a lithium battery, a nickel-metal hydride battery, a nickel-cadmium battery, a graphene battery, or lithium iron phosphate, etc., which is not limited herein. The rated voltage of the battery pack 62 is 12-80V, preferably 20V.

Preferably, the second power module 6 includes two battery packs 62, the voltages of the two battery packs 62 are the same, both are 20V, and the two battery packs 62 are connected in series.

Preferably, as shown in FIG. 5, the second power module 6 includes a casing 61, a plurality of battery packs 62 are supported in the casing 61, the power output port is located on the casing 61, and the plurality of battery packs 62 are independently selected in series Or output energy through the power output port uniformly after parallel connection. At this time, the second power supply module 6 may also be single or multiple. When the number of the second power supply module 6 is multiple, the power supply installation portion 13 may be provided with multiple power input ports corresponding to the multiple second power supply modules 6. The two second power supply modules 6 are installed on the frame 1 respectively; but not limited to this, multiple second power supply modules 6 can be connected as a whole and then installed through one or more power output ports and corresponding power input ports, namely The whole is installed with the frame 1.

It is understandable that several battery packs 62 can be connected in series, or all can be connected in parallel, or partly connected in series and partly connected in parallel; the voltages of several battery packs 62 can be the same or different from each other; several battery packs 62 can be fixed or can be independent of each other. The detachable support is provided in the housing 61. Exemplarily, the voltage of the power source is 80V. At this time, the second power module 6 can include four battery packs 62 with a rated voltage of 20V connected in series, and the battery packs 62 are detachably installed with the housing 61. But it is not limited to this. The second power module 6 may also include a battery pack 62 with a rated voltage of 40V and two battery packs 62 with a rated voltage of 20V connected in series. The 40V battery pack 62 is fixedly installed with the housing 61. A 2OV battery pack 62 and the housing 61 are detachably installed. When the battery pack 62 and the housing 61 are detachably installed, the battery pack 62 can be replaced with a new one after the battery pack 62 has been discharged for a long time. In addition, a single battery pack 62 can also be used alone on other tool bodies to improve utilization Therefore, the single battery pack 62 is a universal battery pack 62. Preferably, the voltage of the battery pack 62 of the second power supply module 6 may all be 20V, and a plurality of the same battery packs 62 are combined.

The connection structure of the battery pack 62 and the housing 61 can be that the housing 61 is provided with a receiving place, which has a receiving interface that matches the interface of the battery pack 62. The battery pack 62 is movably or fixedly installed in the receiving place. The interface is electrically connected to the battery pack 62 and the power output port.

The second power supply module 6 can be installed on the lawn mower 100 to supply power to the lawn mower 100, or it can be detached from the lawn mower 100 as an independent individual to supply power to multiple different power tool bodies, such as lawn mowers, Chain saws, blowers, blowers, etc., form a power sharing system, which increases the utilization rate of the second power supply module 6 and increases the user's input-output ratio.

It can be understood that the second power supply module 6 can be directly installed on the lawn mower 100 to supply power to the lawn mower 100, or it can be detached from the lawn mower 100 as an independent individual to supply power to multiple different power tool bodies. For example: lawn mowers, chain saws, hair dryers, blowers, etc., to form a power sharing system to improve utilization. That is, the second power module 6 is actually a universal battery, and the single battery pack 62 of the second power module 6 can be universal to supply power for other electric tools, or the second power module as a whole can be universal for other electric tools. powered by.

The frame 1 is also provided with a charging structure for connecting an external power source to charge the power source. The first power module 5 is configured to be installed on the frame 1 to charge through the charging structure, and the second power module 6 is configured to be connected to the frame 1 Separate the charging equipment to supplement the energy, or install it on the frame 1 to charge it through the charging structure, so that the second power module 6 does not need to be frequently removed from the frame 1 for charging, which improves the second power module 6Ease of use.

Specifically, the charging structure may include only one charging interface, that is, both the first power module and the second power module can be charged through this one charging interface, and the structure is simple; of course, the charging interface can be connected to the first charging interface 53 and the second charging interface 63 Different charging ports charge the first power supply module 5 and the second power supply module 6 independently of each other. At this time, the charging management of the first power supply module 5 and the second power supply module 6 is clearer.

The first power module 5 supplies power to the walking motor 4 and/or the cutting motor 9, and the second power module supplies power to the walking motor 4 and/or the cutting motor 9. The first power module 5 and the second power module 6 can supply power sequentially or simultaneously, In order to realize the cutting and walking functions of the lawn mower.

The lawn mower 100 has a first state in which the walking function and a cutting function are simultaneously realized, and a second state in which only the walking function is realized.

When the lawn mower 100 is in the first state: it can only be powered by the first power module 5, that is, the first power module 5 drives both the walking motor 4 and the cutting motor 9 to operate. It is also possible that only the second power module 6 provides power, that is, the second power module 6 drives both the walking motor 4 and the cutting motor 9. It may also be that the first power module 5 and the second power module 6 cooperate to provide power, and the first power module and the second power module provide power in sequence; or the first power module and the second power module provide power at the same time. For example, the first power module 5 and the second power module 6 provide power at the same time to drive the walking motor 4 and the cutting motor 9; or, the first power module 5 first provides power to drive the walking motor 4 and the cutting motor 9. 5 When the power is lower than a certain amount, the first power module 5 stops supplying power, and the second power module 6 provides power to drive the walking motor 4 and the cutting motor 9. The certain amount is a preset value, which can be 10% of the power, 5% of the power Electricity, 0 electric quantity, lower than the preset value is limited in this application not to be greater than the preset value; or, the first power module 5 drives the walking motor 4 and the cutting motor 9, and the second power module 6 also drives the walking motor 4 at the same time; Or the first power module 5 drives the cutting motor 9 and the second power module 6 drives the walking motor 4; or the first power module 5 drives the cutting motor 9, and the second power module 6 drives the walking motor 4. The power of the second power module 6 is low At the preset value, the second power module 6 stops supplying power, and the first power module 5 drives the walking motor 4 and the cutting motor 9. It is not limited to the ones listed above, and the others are implemented when the lawn mower 100 is in the first state. The power provided by the first power module 5 and the second power module 6 is within the protection scope of the present application.

When the lawn mower 100 is in the second state: it can be powered only by the first power module 5, that is, the first power module 5 drives the walking motor 4. The power can be provided only by the second power module 6, that is, the second power module 6 drives the walking motor 4. The first power module 5 and the second power module 6 can also cooperate to provide power. For example, the first power module 5 and the second power module 6 provide power at the same time to drive the walking motor 4; or, the first power module 5 provides power first Drive the walking motor 4, when the power of the first power module 5 is lower than the preset value, the first power module 5 stops supplying power, and the second power module 6 provides power to drive the walking motor 4. It is not limited to the ones listed above. When the lawn mower 100 is in the second state, the power provided by the first power module 5 and the second power module 6 is within the protection scope of the present application.

The power supply mode of the lawn mower 100 in the first state and the second state may be a combination of multiple power supply modes described above when in different states.

The lawn mower 100 also includes a third state that only realizes the cutting function. When the lawn mower 100 is in the third state, it can only be powered by the first power module 5, that is, the first power module 5 drives the cutting motor 9. The power can be provided only by the second power module 6, that is, the second power module 6 drives the cutting motor 9. The first power module 5 and the second power module 6 can also cooperate to provide power. For example, the first power module 5 and the second power module 6 provide power at the same time and drive the cutting motor 9 together; or, the first power module 5 provides power first Drive the cutting motor 9. When the power of the first power module 5 is lower than the preset value, the first power module 5 stops supplying power, and the second power module 6 provides power to drive the cutting motor 9. It is not limited to the ones listed above. When the lawn mower 100 is in the third state, the power provided by the first power module 5 and the second power module 6 are all within the protection scope of the present application.

In some embodiments, both the first power module and the second power module can supply power to the walking motor 4 and the cutting motor 9. Specifically, both can be powered at the same time, or the first power module can supply power first and wait for the power After the value is lower than the preset value, the first power supply module stops supplying power, and the second power supply module supplies power.

Specifically, when the lawn mower is configured to be in the first state, the first power module 5 and the second power module 6 provide power at the same time; when in the second state, the first power module 5 and the second power module 6 provide power at the same time .

In addition, the lawn mower can also be configured such that when in the first state, the first power module 5 and the second power module 6 provide power at the same time; when in the second state, the second power module 6 provides power. It is not limited to the above two, other combinations of the first state, the second state, and the third state also realize that the first power supply module 5 and the second power supply module 6 can both be the walking motor 4 and the cutting motor 9 are also in this project. Within the scope of protection applied for.

Preferably, the second power supply module 6 is suitable for supplying power to the cutting motor 9 and the walking motor 4 when their power is within a specific range. It can be understood that the output power of the second power module 6 is limited, and the power output is different from that of the first power module 5. Specifically, the power output by the first power module 5 is better than the power output by the second power module 6. For the mowing performance of the lawn mower, the cutting motor 9 is preferentially driven by the first power module 5. If the cutting motor 9 is driven by the second power module 6, certain conditions must be defined, such as power, that is, the second power module 6 When the cutting motor 9 is driven, the power of the cutting motor 9 becomes smaller.

In one embodiment, the first power module 5 can supply power to the walking motor 4 and the cutting motor 9, the second power module 6 can only supply power to the walking motor 4, the first power module and the second power module sequentially supply power, or the first The power supply module and the second power supply module supply power at the same time.

Specifically, the lawn mower 100 is configured to be powered only by the first power module 5 when in the first state; when in the second state, only the second power module 6 provides power; when in the third state, only by The first power supply module 5 provides power.

In addition, the lawn mower 100 can also be configured to be powered by the first power module 5 and the second power module 6 when in the first state; when in the second state, the first power module 5 provides power first, and the first power module After the power of the power module 5 is lower than the preset value, the second power module 6 supplies power. In the third state, only the first power module 5 provides power.

Preferably, when the lawn mower 100 is configured in the first state, only the first power module 5 provides power; in the second state, if the power of the first power module is not lower than the preset value, the first power Module 5 provides power first. After the power of the first power module 5 is lower than the preset value, the power is supplied by the second power module 6. If the power of the first power module is lower than the preset value, the power is supplied by the second power module 6. A power module 5 and a second power module 6 supply power in sequence. If the lawn mower 100 still has the third state, it is powered by the first power module 5. The lawn mower 100 also includes a protection unit B, which is used to limit the cutting motor 9 after the power of the first power module 5 is lower than a preset value, so that the cutting motor 9 stops working.

Not limited to the above, other combinations of the first state, the second state, and the third state can also realize that the first power module is the walking motor 4 and the cutting motor 9, and the second power module only supplies power to the walking motor 4. Within the scope of protection applied for.

In addition, the lawn mower 100 may also include a monitoring circuit for monitoring the power of the first power module 5 and the second power module 6.

The lawn mower is also provided with an output electrical interface 8 electrically connected to the first power module and/or the second power module, and the output electrical interface 8 is configured to output voltages of AC110-240V and DC20-120V. Preferably, the electrical output interface 8 is configured to output AC110, AC120, AC230, DC20V, DC40V, DC60V, DC80V, DC120V. The lawn mower 100 can also supply power and/or charge multiple other power users through the electrical output interface 8. For example, the electrical output interface 8 can charge a mobile phone, or charge other tool bodies, or drive other tool bodies to operate. For example: lawn mowers, hair dryers, blowers, chain saws, etc., to expand the scope of use of this category of tools.

Specifically, there is an output port on the frame, which is the output electrical interface, which can directly output DC voltage; the other output port can also be connected to an inverter and a booster circuit to output AC voltage, the inverter and booster The step-down circuit can be installed in the frame, at this time the output port is the output electrical interface, which can directly output AC voltage; the inverter and step-down circuit can also be installed outside the frame, integrated with an accessory structure , The accessory structure can be electrically connected with the output port to output voltage, and the output voltage structure of the accessory structure is an output electrical interface. In this application, preferably, the inverter and buck-boost circuits are arranged on an accessory structure. The accessory structure can also be directly connected to the second power supply module 6 to output AC voltage to power or charge other tools.

Preferably, the output electrical interface 8 is configured to be electrically connected to the first power module 5. In addition, the output electrical interface outputs a voltage of AC120V. For example, the rated voltage of the first power module 5 is 80V, and the output electrical interface and the first power module 5 pass through an inverter and boost circuit to output AC120V. Or the rated voltage of the first power module 5 is 160V, and the output interface and the first power module 5 pass through an inverter and step-down circuit to output AC120V.

As shown in FIG. 7, the lawn mower 100 also includes a control unit A, which can obtain the power of the first power module 5 and the second power module 6, and the control unit A controls the first power module 5 and the second power module according to the power information. Power supply for power module 6. Specifically, the control unit A includes a cutting control unit W1, which is connected to the cutting motor 9 to control the cutting motor 9; a walking control unit W2, which is connected to the walking motor 4 to control the walking motor 4; Module control unit W3, the first power module control unit is connected to the first power module 5 to obtain the power information of the first power module 5 and control the power supply of the first power module 5; the second power module control unit W4, the second The power module control unit is connected to the second power module 6 to obtain the power information of the second power module 6 and control the power supply of the second power module 6; the cutting control unit W1, the walking control unit W2, and the first power module control unit W3 , The second power module control unit W4 communicates with each other, so as to control the power supply of the first power module 5 and the second power module 6 according to the power information.

In one of the embodiments, a preset value of the power of the first power module 5 is prestored in the control unit A, and when the power of the first power module 5 is greater than the preset value, the control unit A controls the first power module 5, To supply power through the first power module 5, the control unit A controls the second power module 6 so that the second power module 6 does not supply power; when the power of the first power module 5 is lower than the preset value, the control unit A controls the first power supply Module 5 makes the first power module 5 not supply power, and the control unit A controls the second power module 6 to supply power through the second power module 6.

That is, the control method of the lawn mower 100 is to obtain the power information of the first power module 5 and transfer it to the control unit A; obtain the power information of the second power module 6 and transfer it to the control unit A; the control unit A processes the power information , Output corresponding instructions to the first power module 5 and the second power module 6. Specifically, a preset value of the power of the first power module 5 is prestored in the control unit A, and the control unit A determines the power information of the first power module 5 and the preset value. When the power of the first power module 5 is greater than the preset value When the time, the control unit A sends a command to the second power module 6 so that the second power module 6 does not supply power; when the power of the first power module 5 is lower than the preset value, the control unit A sends a command to the first power module 5 , So that the first power supply module 5 does not supply power. Preferably, when the power of the first power module 5 is lower than the preset value, the control unit A sends an instruction to the cutting motor 9 so that the cutting motor 9 does not run.

In addition, as shown in FIG. 2, the power source may also include only the second power module 6. The lawn mower 100 only drives the walking motor 4 and the cutting motor 9 through the second power module 6. The difference from the above embodiment is only that there is no The other structures of the first power supply module 5 are the same, and will not be repeated here. The second power module 6 may be electrically connected to the power output port of the single battery pack 62 and the power input port. Preferably, the voltage of the single battery pack 62 is 12-80V, and preferably, the voltage of the single battery pack 62 is 20V. The second power supply module 6 can also be a whole composed of a number of battery packs 62. The plurality of battery packs 62 are independently connected in series within the second power supply module 6, so that the second power supply module 6 can be relatively arbitrary. The battery pack 62 has a higher voltage; or several battery packs 62 can be independently connected in parallel in the second power module 6 so that the second power module 6 can obtain a larger capacity than any single battery pack 62. The single battery pack 62 may be a lithium battery, a nickel-hydrogen battery, a nickel-cadmium battery, a graphene battery, or lithium iron phosphate, etc., which is not limited herein. The rated voltage of the battery pack 62 is 12-80V, preferably 20V.

Preferably, the second power supply module 6 includes a housing 61, a plurality of battery packs 62 are supported in the housing 61, and the power output port is located on the housing 61, and the plurality of battery packs 62 are independent of each other after being selected in series or in parallel. The power output port outputs energy. At this time, the second power supply module 6 may also be single or multiple. When the number of the second power supply module 6 is multiple, the power supply installation portion 13 may be provided with multiple power input ports corresponding to the multiple second power supply modules 6. The two second power supply modules 6 are installed on the frame 1 respectively; but not limited to this, multiple second power supply modules 6 can be connected as a whole and then installed through one or more power output ports and corresponding power input ports, namely The whole is installed with the frame 1.

The frame 1 is also provided with a charging structure for connecting to an external power source to charge the power source. The second power module 6 is configured to be separated from the frame 1 and charged with a charging device to supplement energy, or it can be installed on the frame 1 It is charged by the charging structure, so that the second power module 6 does not need to be frequently removed from the frame 1 for charging, which improves the convenience of using the second power module 6.

This application also includes a wheeled mobile vehicle. The difference between the wheeled mobile vehicle and the above-mentioned lawn mower is that the cutting member 16 is not included, so that the wheeled mobile vehicle has only one running state, and the wheeled mobile vehicle is in In the running state of walking, the first power supply module 5 and the second power supply module 6 can supply power in sequence; or the first power supply module 5 and the second power supply module 6 can supply power at the same time. In one embodiment, the first power supply module 5 and the second power supply module 6 supply power in sequence. The first power supply module 5 supplies power first. After the power reaches the preset value, the first power supply module 5 stops supplying power, and the second power supply module 6 supplies power. . The other schemes are the same as the above-mentioned lawn mowers, and will not be repeated here.

The above examples only express several implementation modes of the present invention, and the descriptions are more specific and detailed, but they should not be understood as a limitation to the patent scope of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made, and these all fall within the protection scope of the present invention.

Claims

A lawn mower, comprising a frame, wheels installed under the frame, a cutting part, a functional part that drives the wheel and the cutting part, and a power source that provides power to the functional part, and is characterized in :

The power source includes a first power module fixedly installed on the frame, and a second power module detachably installed with the frame;

The lawn mower is configured to be powered by only the first power module, or only by the second power module, or be powered by the first power module and the second power module in cooperation .
The lawn mower according to claim 1, wherein the first power module is a built-in battery installed on the frame, the second power module is a universal battery, and the universal battery is suitable for installation To provide power to other electric tools.
The lawn mower according to claim 1, wherein the frame is further provided with a charging structure for connecting an external power source to charge the first power module and the second power module,

The first power supply module is configured to charge it through the charging structure;

The second power module is configured to be separated from the vehicle frame to be charged by a charging device to supplement energy, or it may be installed on the vehicle frame to charge it through the charging structure.
The lawn mower according to claim 1, wherein:

The frame is provided with a power installation part for receiving the second power module, and the power installation part is provided with a sliding groove or a sliding rail,

The second power supply module is provided with an electrical energy output port, and the power supply installation part is provided with an electrical energy input port that is connected to the electrical energy output port,

The second power module is slidably installed along the sliding groove or the sliding rail to realize the combination with the power installation part.
The lawn mower according to claim 1, wherein the lawn mower is a riding lawn mower, and a support structure for supporting an operator is provided on the frame.
The lawn mower according to claim 1, wherein:

The functional components include a walking motor and a cutting motor, the walking motor drives the wheels to realize the walking function of the lawn mower, and the cutting motor drives the cutting member to realize the cutting function of the lawn mower,

The operating state of the lawn mower includes a first state where the walking motor and the cutting motor work at the same time, and a second state where only the walking motor works.
The lawn mower according to claim 6, wherein when the lawn mower is in the first state,

Only the first power supply module supplies power; or

Only the second power module provides power; or

The first power supply module and the second power supply module cooperate to supply power, and the first power supply module and the second power supply module supply power in sequence; or the first power supply module and the second power supply module supply power at the same time.
The lawn mower according to claim 6, wherein when the lawn mower is in the second state,

Only the first power supply module supplies power; or

Only the second power module provides power; or

The first power supply module and the second power supply module cooperate to supply power, and the first power supply module and the second power supply module supply power in sequence; or the first power supply module and the second power supply module supply power at the same time.
The lawn mower according to claim 8, wherein when the first power supply module and the second power supply module cooperate to supply power,

The first power module and the second power module simultaneously supply power to the walking motor; or

The first power module first supplies power to the walking motor. When the power of the first power module is lower than a preset value, the first power module stops supplying power, and the second power module supplies power to the walking motor.
The lawn mower of claim 6, wherein:

The first power supply module can supply power for the walking motor and the cutting motor, the second power supply module can only supply power for the walking motor, the first power supply module and the second power supply module supply power in sequence, or The first power module and the second power module supply power at the same time.
The lawn mower of claim 10, wherein the first power supply module and the second power supply module supply power in sequence,

The first power supply module first supplies power, and after the power of the first power supply module is lower than a preset value, the first power supply module stops supplying power and the second power supply module supplies power.
The lawn mower according to claim 1, wherein the lawn mower further comprises a protection unit configured to limit the cutting motor after the power of the first power module is lower than a preset value, so as to Stop the cutting motor.
The lawn mower according to claim 1, wherein the lawn mower further comprises a control unit,

The control unit can obtain power information of the first power module and the second power module,

The control unit controls the power supply of the first power module and the second power module according to the power information.
The lawn mower of claim 6, wherein the lawn mower further comprises a control unit,

The control unit includes

A cutting control unit, which is connected to the cutting motor to control the cutting motor;

A walking control unit, which is connected to the walking motor to control the walking motor;

A first power module control unit, the first power module control unit is connected to the first power module to obtain power information of the first power module and control the power supply of the first power module;

A second power supply module control unit, where the second power supply module control unit is connected to the second power supply module to obtain power information of the second power supply module and control the power supply of the second power supply module;

The cutting control unit, the walking control unit, the first power module control unit, and the second power module control unit are communicatively connected to control the power supply of the first power module and the second power module according to power information.
The lawn mower according to any one of claims 13 and 14, wherein a preset value of the power of the first power module is prestored in the control unit,

When the power of the first power module is greater than the preset value, the control unit controls the first power module to supply power through the first power module, and the control unit controls the second power module , So that the second power module does not supply power;

When the power of the first power supply module is lower than the preset value, the control unit controls the first power supply module so that the first power supply module does not supply power, and the control unit controls the second power supply Module to supply power through the second power module.
The lawn mower according to claim 1, wherein:

The first power module is a single battery pack, or

The first power module includes a plurality of battery packs, and a plurality of the battery packs are independently connected in series in the first power module, so that the first power module can obtain a higher voltage than any single battery pack ；

Or, a plurality of the battery packs can be selected in parallel in the first power module independently, so that the first power module can obtain a larger capacity than any single battery pack.
The lawn mower according to claim 1, wherein:

The second power module is a single battery pack, or

The second power supply module includes a plurality of battery packs, and the plurality of battery packs are independently connected in series within the second power supply module, so that the second power supply module can obtain a higher voltage than any single battery pack ；

Alternatively, a plurality of the battery packs can be independently connected in parallel in the second power module, so that the second power module can obtain a larger capacity than any single battery pack.
The lawn mower according to claim 17, wherein the second power module includes a plurality of battery packs, the second power module includes a housing, and the plurality of battery packs are supported in the housing, and the housing An electric energy output port is provided on the upper part, and a plurality of the battery packs are independent of each other and output energy through the electric energy output port after being selected in series or parallel.
The lawn mower according to claim 1, wherein the lawn mower is further provided with an output electrical interface electrically connected to the first power module and/or the second power module, and the output electrical interface is configured To output DC power and/or AC power for use in powering or charging other devices.
A wheeled mobile vehicle includes a frame, wheels installed under the frame, functional components that drive the wheels, and a power source that provides power for the functional components, and is characterized in:

The power source includes a first power module installed on the frame, and a second power module movably installed with the frame;

The wheeled mobile vehicle is configured to be powered by only the first power module, or only by the second power module, or be provided by the first power module and the second power module in cooperation power.
The wheeled mobile vehicle according to claim 20, wherein the first power module is a built-in battery installed on the frame, the second power module is a universal battery, and the universal battery is suitable for Installed on other electric tools to provide power.
The wheeled mobile vehicle according to claim 20, wherein the frame is further provided with a charging structure for connecting an external power source to charge the first power module and the second power module,

The first power supply module is configured to charge it through the charging structure;

The second power module is configured to be separated from the vehicle frame to be charged by a charging device to supplement energy, or it may be installed on the vehicle frame to charge it through the charging structure.
The wheeled mobile vehicle according to claim 20, wherein:

The frame is provided with a power installation part for receiving the second power module, and the power installation part is provided with a sliding groove or a sliding rail,

The second power supply module is provided with an electrical energy output port, and the power supply installation part is provided with an electrical energy input port that is connected to the electrical energy output port,

The second power module is slidably installed along the sliding groove or the sliding rail to realize the combination with the power installation part.
The wheeled mobile vehicle according to claim 20, wherein:

The second power module is a single battery pack, or

The second power supply module includes a plurality of battery packs, and the plurality of battery packs are independently connected in series within the second power supply module, so that the second power supply module can obtain a higher voltage than any single battery pack ；

Alternatively, a plurality of the battery packs can be independently connected in parallel in the second power module, so that the second power module can obtain a larger capacity than any single battery pack.
The wheeled mobile vehicle according to claim 20, wherein:

The first power supply module and the second power supply module can supply power in sequence; or the first power supply module and the second power supply module can supply power at the same time.
The wheeled mobile vehicle according to claim 25, wherein:

When the first power supply module and the second power supply module supply power in sequence,

The first power supply module first supplies power, and after the power reaches a preset value, the first power supply module stops supplying power, and the second power supply module supplies power.
The wheeled mobile vehicle according to claim 20, wherein the wheeled mobile vehicle can be a lawn mower, a scooter, or an electric bicycle.
A wheeled mobile vehicle includes a frame, wheels installed under the frame, functional components for driving the wheels, and a power source for providing power to the functional components, characterized in that:

The power source includes a first power module installed on the frame,

The frame is provided with a power installation part for receiving the second power module, so that the wheeled mobile vehicle can be configured to be powered by only the first power module or only by the first power module. The second power supply module provides power, or the first power supply module and the second power supply module cooperate to provide power.
The wheeled mobile vehicle of claim 28, wherein:

The wheeled mobile vehicle is a lawn mower, and the wheeled mobile vehicle further includes a cutting member; or

The wheeled mobile vehicle is a scooter; or

The wheeled mobile vehicle is an electric bicycle.