CN221457297U - Electric wheel type equipment and power supply assembly - Google Patents

Abstract

The application discloses an electric wheel type device, comprising: a frame, a traveling wheel set and a traveling wheel set, wherein the traveling wheel set is mounted on the frame; the travelling wheel set comprises a first travelling wheel and a second travelling wheel; the walking motor is provided with a driving shaft and is used for driving the walking wheel set; the power supply assembly is at least used for supplying power to the walking motor; the power supply assembly includes a battery pack and a mounting member for mounting the battery pack to connect the battery pack to the vehicle frame; the battery pack is detachably connected to the mounting member; the power supply assembly is detachably connected to the electric wheeled device so that it can be removed to fit and power other electric wheeled devices. By adopting the technical scheme, the modularized power supply assembly can be provided, and can be assembled and installed according to requirements, so that the suitability of the power supply assembly among all devices is improved.

Description

Electric wheeled equipment and power components

Technical Field

The present application relates to an outdoor walking device, and in particular to an electric wheeled device and a power supply assembly.

Background technique

Outdoor walking equipment is used for outdoor operations. For example: multi-purpose vehicles, agricultural machinery vehicles, farmer's vehicles, beach cars, golf carts, lawn mowers, etc. When these devices are working outdoors, they need to carry some energy storage devices. Existing energy storage devices for outdoor walking equipment can basically be divided into two categories, one of which uses gasoline, diesel and other fuels as energy storage devices, and the other uses electric energy storage devices as energy storage devices. Compared with fuel, electric energy storage devices are more environmentally friendly and energy-saving, and thus have been more favored by users and manufacturers in recent years.

However, the existing energy storage devices of outdoor walking equipment usually use built-in fixed batteries as energy storage devices, which limits the maximum energy storage capacity of outdoor walking equipment. Especially for professional users, the functions of outdoor walking equipment are too single and cannot meet the needs of professional users who work outdoors for a long time and have diverse work content.

For example, a lawn mower, as a garden tool, is widely used in the fields of mowing lawns and vegetation. Professional users need to mow not only lawns, but also branches, weeds from the sides of bushes, and blow fallen leaves. In order to solve the above-mentioned problem of power shortage, existing lawn mowers are equipped with multiple battery packs, which are pluggable and installed in a battery compartment, and the battery compartment is fixedly installed on the frame. Users can usually only operate the battery packs, such as plugging and unplugging the battery packs from the battery compartment.

This section provides background information related to the present application which is not necessarily prior art.

Utility Model Content

One purpose of the present application is to solve or at least alleviate part or all of the above problems. To this end, one purpose of the present application is to provide a modular power supply assembly consisting of a battery compartment and a battery pack, which can be detachably installed on different vehicles by users, thereby reducing costs and providing flexible power supply.

In order to achieve the above-mentioned objectives, the present application adopts the following technical solution: an electric wheeled device, comprising: a frame, a walking wheel group, installed on the frame; the walking wheel group includes a first walking wheel and a second walking wheel; a walking motor, having a drive shaft, for driving the walking wheel group; a power supply assembly, at least for powering the walking motor; the power supply assembly includes a battery pack and a mounting member for installing the battery pack to connect the battery pack to the frame; the battery pack is detachably connected to the mounting member; the power supply assembly is detachably connected to the electric wheeled device so that it can be taken out to adapt to other electric wheeled devices and supply power to other electric wheeled devices.

Optionally, the mounting member includes at least one first mounting member or at least one second mounting member; the first mounting member and the second mounting member have different shapes.

Optionally, the first mounting member and the second mounting member can accommodate different total numbers of battery packs.

Optionally, the energy of a battery pack is greater than or equal to 2 kWh.

Optionally, the total capacity of the power supply assembly is greater than or equal to 8 kWh.

Optionally, the first mounting member or the second mounting member is configured to adapt to a plurality of second battery packs, and the energy of one second battery pack is greater than or equal to 0.1 kWh and less than 2 kWh.

Optionally, the mounting member includes at least a first combining portion for electrically connecting to the battery pack and a third combining portion for limiting the battery pack mounted on the mounting member; the first combining portion and the third combining portion are arranged opposite to each other.

Optionally, the first coupling portion includes a locking assembly and a housing terminal assembly; the battery pack includes a terminal assembly adapted to the housing terminal assembly; and the rated value of the current output by the battery pack through the mounting member is greater than or equal to 120A.

Optionally, the width of the power supply assembly in the left-right direction is greater than or equal to 600 mm and less than or equal to 700 mm.

Optionally, the mounting comprises a battery compartment.

Optionally, the electric wheeled equipment includes a manned lawn mower, an all-terrain vehicle, or an electric motorcycle.

A power supply assembly is at least used to supply power to an electric wheeled device, the electric wheeled device comprising: a travel wheel group, comprising a first travel wheel and a second travel wheel; a frame, connecting the first travel wheel and the second travel wheel; a travel motor, having a drive shaft, for driving the travel wheel group; the power supply assembly comprises: a battery pack and a mounting member for mounting the battery pack to connect the battery pack to the frame; the mounting member comprises at least one first coupling portion and at least one second coupling portion; the first coupling portion is detachably connected to the battery pack; the second coupling portion is configured to be detachably mounted to the first electric wheeled device or the second electric wheeled device.

Optionally, the power supply assembly includes at least one first mounting member and at least one second mounting member; the first mounting member and the second mounting member can adapt to different numbers of battery packs.

Optionally, the mounting comprises a battery compartment.

The benefit of the present application is at least that the integrated power supply assembly of the present application can be adapted to different vehicles and can reduce the cost of vehicle manufacturing.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a perspective view of an electric wheeled vehicle as an embodiment of the present application;

FIG2 is a perspective view of an electric wheeled vehicle from another perspective as an embodiment of the present application;

FIG3 is a perspective view of a power source assembly of the electric wheeled vehicle in FIG1 ;

FIG4 is a schematic diagram of a power supply assembly adapted to different vehicles as an embodiment of the present application;

FIG5 a is a perspective view of the first mounting member and the battery pack of the power supply assembly in FIG3 ;

FIG5 b is a perspective view of a second mounting member and a plurality of battery packs of the power supply assembly in FIG3 ;

FIG6 is a perspective view of the first connecting member in FIG5a;

FIG7 is a perspective view of the first connecting member in FIG5a from another perspective;

FIG8 is a perspective view of a power supply assembly mounted on a vehicle frame;

FIG9 is a perspective view of a terminal assembly of the battery pack in FIG5a;

FIG10 a is a schematic diagram of a power supply assembly as an embodiment of the present application;

FIG10 b is a schematic diagram of a power supply assembly as another embodiment of the present application;

FIG10c is a schematic diagram of a power supply assembly as another embodiment of the present application;

FIG11 is a schematic diagram of a mounting member and a second battery pack as an embodiment of the present application;

FIG12 is a perspective view of the frame, power supply assembly and travel motor of the manned lawn mower in FIG1 ;

FIG13 is an exploded view of the seat and seat mounting structure of the manned lawn mower in FIG1 ;

FIG14a is a perspective view of the seat pan in FIG13 and the locking assembly in a locked state;

FIG14b is a perspective view of the seat pan in FIG13 and the locking assembly in an unlocked state;

FIG15a is a schematic diagram of a locking state of the locking assembly of the seat in FIG13;

FIG15b is a schematic diagram of the unlocked state of the locking assembly of the seat in FIG13;

FIG16 is a perspective view of the central control assembly of the manned lawn mower in FIG1 ;

FIG17 is a perspective view of the central control assembly of the manned lawn mower in FIG1 from another perspective;

FIG18 is an exploded view of the central control assembly of the manned lawn mower in FIG1 ;

FIG19 is a perspective view of a circuit board assembly of the central control assembly in FIG16;

FIG20 is a perspective view of the second sealing member of the central control assembly in FIG16;

FIG21 is a perspective view of the anti-overturning device of the manned lawn mower in FIG1 ;

FIG22 is an exploded view of the connection assembly of the anti-overturning device in FIG21;

FIG23 is an exploded view of the bending assembly of the anti-overturning device in FIG21;

FIG. 24 is a perspective view of the frame of the manned lawn mower in FIG. 1 .

Detailed ways

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

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

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

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

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

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

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

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

In the present application, the terms "device", "module" or "unit" may be implemented in the form of hardware or software to achieve specific functions.

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

As shown in FIG1 , the outdoor travel equipment 100 disclosed in the present application may specifically be an electric wheeled equipment, such as a manned lawn mower, which can be operated by a user to ride or stand on it to mow lawns and other vegetation. In this specification, the directions of front, back, left, right, up and down are described as the directions shown in FIG1 . Specifically, when a user rides on the outdoor walking equipment 100 located on the ground, the direction facing the user is defined as the front, the direction facing the back is the back, the direction on the left hand side is the left, the direction on the right hand side is the right, the direction close to the ground is the bottom, and the direction away from the ground is the top. Of course, the outdoor walking equipment disclosed in the present application also includes an all-terrain vehicle (UTV, Utility Vehicle). In the related art, an all-terrain vehicle includes a four-wheeled all-terrain vehicle (ATV, All Terrain Vehicle), a multi-functional all-terrain vehicle and an entertainment field vehicle. In addition, the outdoor walking equipment disclosed in the present application also includes a manned snowplow, a push lawn mower, a push snowplow and an electric motorcycle.

As shown in FIGS. 1 to 3 , the outdoor walking device 100 includes: a housing assembly 10, a power assembly 20, and a walking assembly 40. The walking assembly 40 includes a walking wheel assembly 41 and a walking motor 42 (see FIG. 12 ). The walking motor 42 has a driving shaft for driving the walking wheel assembly 41 to rotate. The power assembly 20 is used to supply power to the outdoor walking device 100.

The power supply assembly 20 includes a battery pack 21 and a connector 22 for installing the battery pack 21 to connect the battery pack 21 to the outdoor walking device 100. The battery pack 21 is detachably connected to the connector 22, and the connector 22 is detachably installed to the outdoor walking device 100 so that it can be taken out to adapt to other electrical equipment. Among them, other electrical equipment includes but is not limited to all-terrain vehicles, push lawn mowers, push snow blowers, and manned lawn mowers. Specifically, as shown in Figure 4, the power supply assembly 20 of the outdoor walking device 100 can be removed from the outdoor walking device 100 in a detachable and washable manner, and then installed on the all-terrain vehicle 100a, the push lawn mower, the push snow blower 100c, the riding lawn mower 100b, and the standing lawn mower 100d to power the above-mentioned electrical equipment to realize the functions of the above-mentioned power supply equipment.

In some embodiments, the connector 22 of the power supply assembly 20 includes a first connector 22a and a second connector 22b having different appearance features. Specifically, the first connector 22a is configured to electrically connect a battery pack 21, and the second connector 22b is configured to electrically connect at least two battery packs 21. Figures 5a and 5b respectively show a specific implementation of the first connector 22a and the second connector 22b. A battery pack 21 is detachably mounted inside the first connector 22a, and three battery packs 21 are detachably mounted inside the second connector 22b. The outer dimensions of the second connector 22b are larger than the outer dimensions of the first connector 22a. In this way, the power requirements of different outdoor walking equipment can be met by providing connectors 22 with different outer dimensions for mounting battery packs 21. For example, for a push lawn mower 100b or a push snow blower 100c, the power supply assembly can use the first connector 22a to mount the battery pack. For the all-terrain vehicle 100a, multiple first connectors 22a with battery packs 21 installed can be used, or one or more second connectors 22b with at least two battery packs 21 installed can be used, or a combination of the first connector 22a and the second connector 22b can be used. In this way, the connectors for installing the battery packs are reasonably selected and arranged in combination with the power demand of the outdoor walking equipment and its own spatial characteristics, thereby improving the versatility of the power supply assembly between various power-consuming equipment, thereby making the application scenarios of the power supply assembly wider and providing convenience for users.

In some implementations, the connector 22 may be a battery compartment or other types of structures for mounting a battery pack on a manned lawn mower. Hereinafter, the connector 22 is replaced by the battery compartment 22, the first connector 22a is replaced by the first battery compartment 22a, and the second connector 22b is replaced by the second battery compartment 22b. Of course, the connector may also have other appearance features, such as a base.

Optionally, as shown in FIGS. 6 to 7, the battery compartment 22 is formed with a storage space 221 for accommodating the battery pack 21, and the battery pack 21 is detachably arranged in the storage space 221. Specifically, the connector 22 is formed or connected with at least one first combination portion 222 and at least one second combination portion. Among them, the first combination portion 222 is used to realize the detachable electrical connection between the battery compartment 22 and the battery pack 21. The second combination portion is used to realize the detachable connection between the battery compartment 22 and the outdoor walking device 100. In some embodiments, the first combination portion 222 is not only used to realize the electrical connection with the battery pack 21, but also can be used to fix the battery pack 21 in the storage space 221 of the battery compartment 22, so as to avoid the outdoor walking device 100 from shaking relative to the battery compartment 22 due to vibration when driving or performing operating functions, thereby causing poor contact at the first combination portion 222. The second combination portion can be a screw, or a specially designed mechanism, such as a buckle or a quick clip structure, and those skilled in the art can design it according to needs.

6 , the battery compartment 22 includes a compartment body 225 and a first coupling portion 222 disposed on the compartment body 225. The first coupling portion 222 may include a locking assembly 2221 and a compartment body terminal assembly 2222. The locking assembly 213 is disposed on the compartment body 225 of the battery compartment 22, and is used to lock the battery pack 21 in the compartment body 225.

In some embodiments, the bin terminal assembly 2222 includes a charging positive/negative terminal, a discharging positive/negative terminal and a communication terminal arranged on a terminal seat. Among them, the charging positive/negative terminal, the discharging positive/negative terminal and the communication terminal can be columnar metal terminals. Optionally, the charging positive terminal and the discharging positive terminal in the bin terminal assembly 2222 can be the same terminal, or the charging negative terminal and the discharging negative terminal can be the same terminal. The communication terminal can be shared to communicate with the adapter or the self-mobile device during charging or discharging. Optionally, the charging positive/negative terminal, the discharging positive/negative terminal and the communication terminal are arranged on the terminal seat. A guide structure is also provided on the terminal seat or the terminal seat can form a guide structure. A corresponding structure matching the guide structure is provided on the battery pack 21. When the guide structure cooperates with the corresponding structure on the battery pack 21, the bin terminal assembly 2222 can float within a preset distance range. Thereby, after the battery pack 21 is installed on the battery bin, the connection terminal is unstable or damaged due to uncontrollable factors such as vibration. In one embodiment, the guide structure can be a guide column, and the corresponding structure on the battery pack that cooperates with it is a guide groove.

As shown in FIG. 9 , in order to match the first joint portion 222 of the battery compartment 22 in FIG. 6 , the battery pack 21 is provided with a battery pack interface 211 that allows the battery pack 21 to be pluggable and installed on the first joint portion 222. The cooperation between the battery pack interface 211 and the first joint portion 222 enables the battery pack 21 to form not only a mechanical connection with the outdoor walking device 100 but also an electrical connection with the outdoor walking device 100. Specifically, the battery pack interface 211 includes a terminal assembly 2111 that matches the charging and discharging terminals and the communication terminals in the compartment terminal assembly 2222 of the battery compartment 22.

Optionally, the battery compartment 22 is also formed with a slide rail 2221 adapted to the battery pack 21, for guiding the battery pack 21 to be slidably installed in the battery compartment 22. Optionally, as shown in FIG. 7 , in addition to the first coupling portion 222, the battery compartment 22 also includes a third coupling portion 224 for guiding and limiting the insertion and removal of the battery pack 21. The third coupling portion 224 and the first coupling portion 222 are arranged on two sides of the battery compartment 22 opposite to each other. The advantage of such a design is that the battery pack 21 can be fixed in the battery compartment to the maximum extent, avoiding the unstable connection between the battery pack 21 and the battery compartment 22 due to external shaking.

By using the above-mentioned compatible battery compartment 22 body terminal assembly 2222 and battery pack 21 terminal assembly 2111, the battery pack as a whole can achieve IPX7 waterproof and dustproof requirements, and the battery compartment end can achieve IPX5 waterproof requirements. The average discharge current of the battery pack 21 is greater than or equal to 30A, for example, it can be 30A, 35A, 40A, etc. Optionally, the rated current output by the battery pack 21 can be greater than or equal to 120A or the instantaneous peak current is about 350A.

In some embodiments, the power supply assembly 20 includes a first battery compartment 22a and a second battery compartment 22b. The first battery compartment 22a and the second battery compartment 22b have different sizes. The number of battery packs that can be accommodated by the first battery compartment 22a and the second battery compartment 22b is also different. For example, the number of battery packs that can be accommodated by the first battery compartment 22a is one, and the number of battery packs that can be accommodated by the second battery compartment 22b is two or three or more. The second battery compartment 22b disclosed in the present application is also different from the first battery compartment 22a in that the first battery compartment 22a has a first combining portion 222 that can accommodate one battery pack 21, and the second battery compartment 22b has multiple first combining portions 222 for accommodating multiple battery packs 21.

The power supply assembly 20 disclosed in the present application can be combined by one or more first battery compartments 22a and second battery compartments 22b according to actual needs. As shown in Figure 10a, in some embodiments, the power supply assembly 20 may include a first battery compartment 22a and a second battery compartment 22b. Among them, the first battery compartment 22a contains a battery pack 21, and the second battery compartment 22b contains three battery packs 21. The first battery compartment 22a is arranged on the front side of the second battery compartment 22b. In other embodiments, as shown in Figure 10b, the power supply assembly 20 can also be composed of two second battery compartments 22b, each of which contains three battery packs 21. In other embodiments, as shown in Figure 10c, the power supply assembly 20 can be composed of four first battery compartments 22a, and the four first battery compartments 22a are arranged in two rows and two columns. In this way, when designing the power supply assembly, vehicles of different models can choose a suitable arrangement according to the actual space and energy requirements, without having to design the battery compartment separately, thereby forming a modular design of the power supply assembly.

In this embodiment, the weight of the battery pack 21 is greater than or equal to 9Kg. In one embodiment, the weight of the battery pack is greater than or equal to 10Kg, or greater than or equal to 11Kg, or greater than or equal to 12Kg, or greater than or equal to 13Kg, or greater than or equal to 14Kg, or greater than or equal to 15Kg, for example, the weight of the battery pack is 9Kg, 10Kg or 15Kg. The nominal voltage of the battery pack 21 is about 56V, for example, it can be 54V or 58V. In one embodiment, the nominal voltage of the battery pack 21 is greater than or equal to 56V, or the nominal voltage of the battery pack is greater than or equal to 50V, or the nominal voltage of the battery pack is greater than or equal to 48V, or the nominal voltage of the battery pack is greater than or equal to 40V. The capacity of the battery pack 100 is greater than or equal to 20Ah. In one embodiment, the capacity of the battery pack 21 is greater than or equal to 30Ah, or the capacity of the battery pack 21 is greater than or equal to 40Ah, or the capacity of the battery pack 21 is greater than or equal to 50Ah. For example, it can be 20Ah, 30Ah, 40Ah, 50Ah, etc. The ratio of the capacity to weight of the battery pack 21 is greater than or equal to 2Ah/kg, such as 2Ah/kg, 4Ah/kg, 5Ah/kg, etc. Optionally, the energy of the battery pack 21 is greater than or equal to 2kW·h. In one embodiment, the energy of the battery pack 21 is greater than or equal to 3kW·h, or the energy of the battery pack 21 is greater than or equal to 4kW·h, or the energy of the battery pack 21 is greater than or equal to 5kW·h. For example, the energy of the battery pack 21 can be 2kW·h, 3kW·h, 4kW·h, 5kW·h, etc. In some embodiments, the battery pack disclosed in the present application may include a lithium iron phosphate cell. In some embodiments, the battery pack 21 may also be a supercapacitor, also known as an electrochemical capacitor.

In some embodiments, as shown in FIG. 11, the second battery compartment 22b can also adapt to a second battery pack 21a that is different from the battery pack 21. Specifically, the two second battery packs 21a are installed on the adapter 21b and electrically connected to the adapter 21b, and the adapter 21b is electrically connected to the first coupling portion 222 of the second battery compartment 22b. Among them, the energy of the second battery pack 21a is greater than or equal to 0.1kW·h and less than 2kW·h. Optionally, the second battery pack 21a is a battery pack with an energy greater than or equal to 0.1kW·h. In some embodiments, the second battery pack 21a is a battery pack with an energy greater than or equal to 0.4kW·h. In some embodiments, the second battery pack 21a is a battery pack with an energy greater than or equal to 0.6kW·h. In this embodiment, the second battery pack 21a is a lithium battery cell, and can also be selected from nickel-cadmium batteries, graphene and other materials to achieve different combinations of battery characteristics.

Continuing to refer to FIG. 3 , the power supply assembly 20 further includes a power supply management module 23, which includes a housing 231. All signal interfaces 232 and high current interfaces 233 are directly made on the housing 231, without additional wiring harnesses, and can ensure that the power supply management module 23 is waterproof to IPX5 level. Specifically, a wire terminal cap is added to the wire end of the high current interface 232, and a waterproof rubber sleeve is added to the terminal.

Continuing to refer to FIGS. 1 to 3, 8 and 12, when the outdoor walking device is specifically a manned lawn mower 100, the manned lawn mower 100 includes: a housing assembly 10, a power assembly 20, a mowing assembly 30, a walking assembly 40, an operating assembly 50, a frame 11, and a support portion. Among them, the frame 11 extends substantially in the front-to-back direction, and together with the housing assembly 10, constitutes the main body of the manned lawn mower 100, and is used to install the power assembly 20, the mowing assembly 30, the walking assembly 40 and the support portion. The walking assembly 40 is used to support the main body. The operating assembly 50 includes an operating lever assembly 51, and the operating lever assembly 51 is operated by the user to control the manned lawn mower to move forward, backward and turn. In some embodiments, the operating assembly 50 may also include a steering wheel assembly. The support portion is mounted on the frame 11 for supporting the operator. Optionally, the support portion includes a seat 91. The seat 91 is mounted to the frame 11 for the user to sit. Optionally, the support portion also includes a platform for the user to stand. The power supply assembly 20 is used to provide energy for the mowing assembly 30 and the walking assembly 40, so that the manned lawn mower 100 can be used as an electric tool that can carry people. Compared with fuel-powered manned lawn mowers, electric manned lawn mowers are more environmentally friendly and more energy-saving. In some embodiments, the manned lawn mower 100 also includes a grass collecting device for collecting grass clippings cut by the mowing assembly 30. The grass collecting device includes a grass collecting basket assembly, which is detachably mounted behind the seat 91.

In some embodiments, the width of the power supply assembly 20 in the left-right direction is greater than or equal to 600 mm and less than or equal to 700 mm. In some embodiments, the width of the power supply assembly 20 in the left-right direction can also be 620 mm, 640 mm, 660 mm or 680 mm. The walking assembly 40 includes a walking wheel group 41 and a walking motor 42. The walking motor 42 has a drive shaft for driving the walking wheel group 41 to rotate. The walking wheel group 41 is connected to the main machine to support the main machine. The walking wheel group 41 can at least drive the manned lawn mower 100 to walk in the front and rear directions. Optionally, the walking wheel group 41 includes a first walking wheel 411 and a second walking wheel 412. Among them, the first walking wheel 411 includes a first left walking wheel 411L and a first right walking wheel 411R. The second walking wheel 412 includes a second left walking wheel 412L and a second right walking wheel 412R. The walking motor 42 drives the first walking wheel 411 or the second walking wheel 412 to rotate, which is used to realize the walking function of the manned lawn mower 100. Optionally, the number of the travel motors 42 may be one, two, three or four. In this embodiment, the number of the travel motors 42 is two, and the two travel motors 42 drive the first left travel wheel 411L and the first right travel wheel 411R respectively, so that the manned lawn mower 100 can turn in other directions deviating from the front-rear direction.

The power assembly 20 is used to at least supply power to the travel motor 42. The power assembly 20 includes at least one battery pack 21. At least one battery pack 21 is detachably mounted to the manned lawn mower 100. The energy of at least one battery pack of the power assembly 20 is greater than or equal to and less than or equal to 2kW·h. The frame 11 includes a left frame portion 11a and a right frame portion 11b for supporting the power assembly 20. The power assembly 20 is arranged between the left frame portion 11a and the right frame portion 11b. The maximum inner width W1 of the left frame portion 11a and the right frame portion 11b in the left-right direction is less than or equal to 700mm, and the single-row total energy of the power assembly 20 is greater than or equal to 8kW·h. Optionally, the maximum inner width W1 of the left frame portion 11a and the right frame portion 11b in the left-right direction is less than or equal to 700mm, and the single-row total energy of the power assembly 20 is greater than or equal to 9kW·h. Optionally, the maximum inner width W1 of the left frame portion 11a and the right frame portion 11b in the left-right direction is less than or equal to 660 mm, and the single-row total energy of the power supply assembly 20 is greater than or equal to 8 kW·h. Optionally, the maximum inner width W1 of the left frame portion 11a and the right frame portion 11b in the left-right direction is less than or equal to 660 mm, and the single-row total energy of the power supply assembly 20 is greater than or equal to 9 kW·h. It should be explained that the left frame portion 11a and the right frame portion 11b of the above-mentioned frame 11 for supporting the power supply assembly 20 refer to the rear portion of the frame 11. In other embodiments, the above-mentioned supporting portion may also have other forms. In short, the above-mentioned portion should be understood as a vehicle frame arranged around the power supply assembly, and the vehicle frame body may be integrally formed with the frame, or may be connected to the frame by screws or welding.

In the present application, at least part of the power supply assembly 20 is arranged behind the support portion. The total energy of the power supply assembly 20 is greater than or equal to 8kW·h. Optionally, the total energy of the power supply assembly 20 is greater than or equal to 10kW·h, 15kW·h, 20kW·h or 25kW·h, 10kW·h. The height of the power supply assembly 20 in the vertical direction is greater than or equal to 330mm. Optionally, the height of the power supply assembly 20 in the vertical direction is greater than or equal to 350mm.

Specifically, a single row of the power supply assembly 20 includes a battery pack 21. Optionally, a single row of the power supply assembly 20 includes multiple battery packs. Optionally, the power supply assembly 20 includes multiple single rows, at least one single row is arranged along a first direction, and the first direction is substantially parallel to the left-right direction.

The power supply assembly 20 includes at least one battery pack 21, and the battery pack 21 is a battery pack with a large capacity. Of course, the power supply assembly 20 may include multiple battery packs arranged in a specific arrangement. At least one of the multiple battery packs may include a lithium iron phosphate battery cell.

1 and 13 to 15 b, the manned lawn mower 100 includes various devices, such as a central control assembly 70 located at the rear or lower area of the seat 91. The user can conveniently check or repair these devices by changing the position of the seat 91. The central control assembly 70 in the present application is applicable to other forms of electric lawn mowers, such as smart lawn mowers.

The seat mounting structure for mounting a seat 91 to a manned lawn mower 100 disclosed in the present application includes a base plate 92, a connecting plate 93, and a locking assembly 94. The base plate 92 is supported on the frame 11 by a bracket 96, the seat 91 is integrally mounted on the base plate 92, and the connecting plate 93 is located in the front of the seat 91 and is associated with the frame 11. Optionally, the connecting plate 93 and the base plate 92 are associated by a step bolt 95, so that the seat 91 can be flipped around the step bolt 94. In some embodiments, the maximum flipping angle of the seat 91 is limited by a steel wire rope. The locking assembly 94 has an unlocked state as shown in FIG. 14b and FIG. 15b or a locked state as shown in FIG. 14a and FIG. 15a, which allows or prohibits the seat 91 from flipping relative to the frame 11. When the locking assembly 94 is in the locked state, the seat 91 can be restricted from swinging upward relative to the frame 11. When the locking assembly 94 is in the unlocked state, the seat 91 can be allowed to swing upward relative to the frame 11. Optionally, the locking assembly 94 includes an operating member 941 and a mounting assembly 942 for mounting the operating member 941 to the frame 11 , wherein the operating member 941 is configured to rotate about the first axis 101 to switch the locking assembly 94 from a locked state to an unlocked state. The mounting assembly 942 is mounted below the frame 11 .

The locking assembly 94 further includes a connecting assembly 943 for connecting the operating member 941 and the mounting assembly 942. Optionally, the connecting assembly 943 is arranged between the operating member 941 and the mounting assembly 942, and the mounting assembly 942 is fixedly mounted to the frame 11 and at least partially located below the seat 91. In some embodiments, the connecting assembly 943 includes a rotating shaft 9431, a clamping ring 9432, a torsion spring 9433 and a locking member 9434. A limiting portion is formed or connected on the bottom plate; the limiting portion is adapted to the locking member so that the locking assembly has an unlocked state or a locked state that allows or prohibits the seat from flipping relative to the frame. Among them, the operating member 941 is connected to the rotating shaft 9431 in a flat position, and the rotating shaft 9431 is connected to the locking member 9434 in a flat position. The torsion spring 9433 and the clamping ring 9432 are sleeved on the rotating shaft 9431 and are located between the operating member 941 and the locking member 9434. When the user rotates the operating member 941 to rotate around the first axis 101, the operating member 941 drives the rotating shaft 9431 to rotate, and the rotating shaft 9431 drives the locking member 9434 to rotate, so that the locking member 9434 is separated from the limiting member 921 on the bottom plate 92. Of course, the limiting member 921 can be a hook or a limiting groove. The locking assembly 94 disclosed in the present application has a limit on the connecting plate 93 to limit the rotational activity area of the locking member 9434 to a desired range. When the seat 91 falls, the bottom plate 92 falls at the same time, and the limiting member 921 on the bottom plate 92 cooperates with the locking member 9434 to complete the locking. The operating member 941 is turned to drive the locking member 9434 to move and disengage from the limiting member 921 to complete the unlocking. After letting go, the locking assembly 94 is reset under the action of the torsion spring 9433. In some embodiments, the limiting member 921 can be integrally formed with the bottom plate 92, and of course, it can also be installed on the bottom plate 92 through a screw connection structure.

In some embodiments, the locking assembly 94 includes an operating member 941 and a locking member 9434, and the operating member 941 is configured to be operable to switch the locking member 9434 from a locked state to an unlocked state. The locking assembly 94 is separated from the seat 91 in the unlocked state. It can be understood that when the locking assembly 94 is separated from the seat 91 in the unlocked state, the seat 91 can be turned over at will, but the locking assembly 94 does not move, and there is no direct mechanical connection between them.

The locking assembly 94 disclosed in the present application is fixedly mounted on the frame 11 in both the locked state and the unlocked state, so that it is more convenient to flip the seat. It can be understood that when the locking assembly 94 is in the unlocked state, the locking member 9434 is separated from the seat 91. On the other hand, most of the structures of the locking assembly 94 disclosed in the present application are installed under the frame 11, so that the space in the front-to-back direction or the left-to-right direction near the seat can be fully saved, and the installation space of other devices (such as power supply components) installed near the seat can be avoided.

When the manned lawn mower 100 is walking outdoors, it will generate large vibrations when passing through more complex road conditions. This vibration will be further transmitted to the user riding on it through the frame 11, thereby giving the user a poor experience. The seat 91 of the manned lawn mower 100 disclosed in the present application also has a vibration reduction function, which is used to suppress the vibration and road impact when the spring rebounds after shock absorption. When crossing a rough road, although the shock-absorbing spring can buffer the vibration of the road, the spring itself will move up and down, and the shock absorber is used to suppress this spring jumping. If the shock absorber is too soft, the body will jump up and down, and if the shock absorber is too hard, it will bring too much resistance, thereby hindering the normal operation of the spring.

The present application also discloses the arrangement and packaging of the electronic control system of the electric lawn mower and the electric wheeled equipment. The electronic control system of the manned lawn mower 100 generally includes elements from four functional parts, namely, a user interface part, a controller part, a system feedback part and an output part. In the present application, the manned lawn mower 100 is taken as a specific embodiment. In fact, the electric lawn mower includes but is not limited to a stand-on lawn mower and a riding lawn mower. The electric wheeled equipment includes but is not limited to a manned lawn mower, a push snow blower, a push lawn mower and an all-terrain vehicle.

The central control assembly 70 is arranged on the lower side of the seat 91 and serves as a control center to control the operation of the components of the entire manned lawn mower 100 that are electrically connected to the central control assembly 70. In addition, the central control assembly 70 can be positioned toward the center of the vehicle to provide further protection from accidental contact with objects that the vehicle may encounter, and in a manner that protects the wiring harness connected to the central control assembly 70. Figure 16 shows a central control assembly 70 having a housing 71. As shown in Figures 17 to 19, the housing 71 forms a sealed compartment 73 for accommodating a circuit board assembly 72. The circuit board assembly 72 may include one or more of the various traction or motor controllers mentioned above, such as the walking control board 721 and the mowing control board 722 shown in Figure 19. Among them, the number of walking control boards 721 is two, and the number of mowing control boards 722 is three. It can be understood that the five circuit boards are independent of each other. The two walking control boards 721 are the same, and the three mowing control boards 722 are the same. This has the advantage that when the central control assembly 70 fails, it is only necessary to open the housing 71, inspect and repair the walking control board 721 and the mowing control board 722, and easily replace the damaged circuit board. Optionally, the housing 71 of the central control assembly 70 can be formed in various shapes and have various structures. In some embodiments, the housing 71 is formed of a material with high thermal conductivity and specific heat capacity, such as aluminum, zinc-aluminum, zinc-aluminum-magnesium, copper or the like. Optionally, the material of the housing 71 is aluminum or aluminum alloy casting. The housing 71 should have a solid structure to prevent deformation or damage when an object hits the cover. In other embodiments, the housing 71 is made of plastic material. In order to ensure the heat dissipation effect of the central control assembly 70 during its operation, a plurality of heat sinks 74 are provided on the surface of the housing 71 to increase the surface area exposed to the ambient air. Specifically, a plurality of through holes for mounting the heat sink 74 are formed on the housing 71, and a sealing structure, such as a sealing ring, is provided between the heat sink 74 and the through hole.

Specifically, the housing 71 includes a first housing 712 and a second housing 713. The circuit board assembly 72 is disposed in a receiving space formed by the first housing 712 and the second housing 713. The central control assembly 70 further includes a sealing assembly 75 and a cable 76 extending from the receiving space. The sealing assembly 75 is used to achieve sealing between the cable 76 and the first housing 712 or the second housing 713. At least a portion of the sealing assembly 75 can be elastically deformed. The cable 76 can be a flexible cable.

Optionally, the sealing assembly 75 includes a first sealing member 751 and a second sealing member 752. The first sealing member 751 is used to achieve the sealing of the first shell 712 and the second shell 713, and the second sealing member 713 is used to achieve the sealing between the cable 76 and the second shell 713. Specifically, as shown in FIG. 20, the second sealing member 752 is formed with a groove 7521 for adapting to the first sealing member, and the first sealing member 751 is arranged in the above-mentioned groove 7521 and is tightly matched with the first sealing member 752. The second sealing member 752 also includes a through hole 7522 for achieving the sealing between the cable 76 and the second shell 713. The cable 76 passes through the through hole 7522 and is interference-fitted with the second sealing member 752. By setting the first and second sealing members that counteract each other, the overall sealing of the central control assembly 70 is ensured, and its waterproof performance can reach the IPX5 level or even higher. Optionally, the first sealing member 751 is a sealing ring or a foam sealing strip, and the second sealing member 752 is a harness plug. It should be noted that the special feature of the second seal 752 disclosed in the present application is that, while the second seal 752 seals the cable 76, it can also cooperate well with the first seal 751 to achieve the overall sealing performance of the first shell 712, the second shell 713 and the cable 76, and has a simple structure and is easy to assemble.

Optionally, the first sealing member 751 and the second sealing member 752 are integrally formed.

The cable 76 includes a first cable 761 for controlling the mowing motor and a second cable 762 for controlling the travel motor 42. The first cable 761 and the second cable 762 are respectively connected from the first side 71a and the second side 71b of the housing 71. The first side 71a and the second side 71b are arranged opposite to each other. In this way, the first cable 761 for controlling the mowing motor and the second cable 762 for controlling the travel motor 762 are respectively connected from both sides of the housing 71, thereby ensuring that the shortest wiring distance is formed between the cable outlet and the corresponding motor, making the structure more compact.

The manned lawn mower 100 disclosed in the present application further includes a brake mechanism 60 for braking the travel wheel set 41 during driving or on a slope. Optionally, the parking mechanism includes a first brake assembly for braking the second left travel wheel 412L and a second brake assembly for braking the second right travel wheel 412R. The operating assembly 50 further includes a brake pedal for driving the first brake assembly and the second brake assembly, and the user can control the manned lawn mower 100 to decelerate until it stops by stepping on the brake pedal.

Specifically, the brake pedal 52 is connected to a driving rod, which is arranged between the brake pedal and the first brake assembly or/and the second brake assembly, and is used to transmit the braking force on the brake pedal to the first brake assembly or/and the second brake assembly. The braking process of the manned lawn mower 100 is as follows: the user steps on the brake pedal forward to drive the driving rod to move, and the driving rod drives the first brake assembly to brake the second left-side running wheel 412L, and at the same time, the driving rod drives the second brake assembly to brake the second right-side running wheel 412R. Optionally, the first brake assembly and the second brake assembly include steel wire ropes, so that the parking force on the left and right sides of the vehicle can be uniform, and the requirements for spatial arrangement are low.

Manned lawn mowers, especially zero roll-over radius (ZTR) lawn mowers, can turn on the spot and have high working efficiency. However, because they are off-road vehicles, the working environment is complex and they are often used in complex working environments such as slopes and depressions. Due to the uneven technical level of operators and the decrease in vehicle stability during operation, rollover accidents occur from time to time, seriously threatening the driver's life. In order to reduce the loss of life and property caused by accidents, the most convenient way is to adopt passive protection, that is, to install an anti-rollover device that can provide certain safety protection on the vehicle, so that a safe space can be formed under the protection of the anti-rollover device, which can protect the driver after the vehicle rolls over.

The improvements of the anti-rollover device of the manned lawn mower disclosed in the present application mainly lie in the fixing structure and the adjustment and flipping method, which can effectively fix the anti-rollover device and can be folded down when passing through culverts or height restrictions, so as to facilitate lowering the height of the entire vehicle and passing quickly.

As shown in FIG. 1 and FIG. 21 to FIG. 23, the anti-overturning device 12 is arranged near the supporting portion and is at least partially fixedly mounted on the vehicle frame 11. The anti-overturning device 12 is operated to have at least a first folding position and a second folding position. Optionally, the anti-overturning device 12 includes a first support portion 121, a second support portion 122, and a third support portion 123. The third support portion 123 can be folded relative to the first support portion 121 and the second support portion 122.

The first support part 121 has a connection component 124 mounted to the frame 11 and a bending component 125 bent relative to the frame 11. Specifically, the first support part 121 has a first end 1211 detachably mounted to the frame 11 and a second end 1212 separated from the first end 1211. The first end 1211 is connected to the frame 11 through the connection component 124, and the second end 1212 is connected to the third support part 123 through the bending component 125.

The connecting assembly 124 includes a sleeve 1241 fixedly mounted to the vehicle frame 11, and the first end 1211 of the first support portion 121 is disposed in the sleeve 1241 and fixed by pressing an intermediate sleeve 1243 with a bolt 1242. In this way, by adding the intermediate sleeve 1243, the vertical pipe of the first end 1211 of the first support portion 121 can be prevented from being directly crushed and deformed by the bolt 1242. When the anti-overturning device 12 needs to be removed, the user only needs to loosen the outer fastening nut to quickly disassemble and transport it.

The flip assembly 125 includes a flip connector 1251, a rotating pin 1252, and a positioning pin 1253. The second portion 1212 of the first support portion 121 is formed with a plurality of positioning holes 1253a adapted to the positioning axis 1253, and the user can select different positioning holes 1253a according to the bending angle requirements.

The above takes the first support part 121 as an example to describe the fixing method of the first support part 121 and the frame and the connection relationship between the first support part 121 and the third support part 123. It can be understood that the installation form of the second support part 122 is the same as that of the first support part 122, and this application will not repeat the description.

The anti-rollover device 12 in the present application is provided with three states, namely, a working state, a first folding state, and a second folding state. The folding angles of the first folding state and the second folding state are different, so that different folding positions of the anti-rollover device 2 are adjusted for different passing scenarios. The third pillar part 123 is flipped by rotating the pin shaft 1252, and after flipping to the set angle, it is locked by plugging and pulling out the positioning pin shaft 1253. In some embodiments, there are shock-absorbing shrapnel or shock-absorbing sponge between the third pillar part 123 and the first pillar part 121 and the second pillar part 122, which are used to reduce the vibration of the anti-rollover device 12 during the driving process of the whole vehicle.

As shown in FIG. 24 , the frame 11 includes a front frame 111 and a rear frame 112, and the front frame 111 and the rear frame 112 are detachably connected. Among them, the front frame 111 is equipped with a first running wheel 411, and the rear frame 112 is equipped with a second running wheel 412. Optionally, the front frame 111 and the rear frame 112 are installed and fixed by connecting bolts 113. The first running wheel 411 is separately assembled on the front frame 111, and the power supply component, the central control component, etc. are assembled on the rear frame 112. When it is necessary to replace a blade disc of different specifications (for example, 48 inches, 52 inches, 54 inches, 60 inches) to meet the needs of different users or working conditions, the user can change the wheelbase of the manned lawn mower to adapt to blade discs of different sizes by replacing the front frame 111 that is adapted to the blade disc. The front frame 111 disclosed in the present application adopts an I-beam structure welded with steel plates as a whole. Binding holes are designed on both sides of the front axle tube, and a towing hole is designed in the middle to facilitate the attachment of front-mounted accessories such as a snowplow.

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

Claims (14)

1. An electric wheeled device, comprising: Frame; A running wheel assembly is mounted on the frame; the running wheel assembly comprises a first running wheel and a second running wheel; A travel motor having a drive shaft for driving the travel wheel set; A power supply assembly, at least used to supply power to the travel motor; The power source assembly includes a battery pack and a mounting member for mounting the battery pack to connect the battery pack to the vehicle frame, the battery pack being detachably connected to the mounting member; The power supply assembly is detachably connected to the electric wheeled device so that it can be taken out to adapt to other electric wheeled devices and provide power to the other electric wheeled devices. 2. The electric wheeled equipment according to claim 1 is characterized in that the mounting member includes at least one first mounting member or at least one second mounting member; the first mounting member and the second mounting member have different shapes. 3. The electric wheeled device according to claim 2, characterized in that the total number of battery packs that can be adapted by the first mounting member and the second mounting member is different. 4 . The electric wheeled device according to claim 3 , characterized in that the energy of at least one of the battery packs is greater than or equal to 2 kW·h. 5 . The electric wheeled device according to claim 4 , characterized in that the total energy of the power supply assembly is greater than or equal to 8 kW·h. 6. The electric wheeled device according to claim 2 is characterized in that the first mounting member or the second mounting member is configured to adapt to multiple second battery packs, and the energy of at least one of the second battery packs is greater than or equal to 0.1 kW·h and less than 2 kW·h. 7. The electric wheeled equipment according to claim 1 is characterized in that the mounting member includes at least a first coupling portion for electrically connecting to the battery pack and a third coupling portion for limiting the battery pack mounted on the mounting member; the first coupling portion and the third coupling portion are arranged relative to each other. 8. The electric wheeled equipment according to claim 7 is characterized in that the first coupling portion includes a locking assembly and a housing terminal assembly; the battery pack includes a terminal assembly adapted to the housing terminal assembly; and the rated value of the output current of the battery pack through the mounting member is greater than or equal to 120A. 9. The electric wheeled equipment according to claim 1, characterized in that the width of the power supply assembly in the left-right direction is greater than or equal to 600 mm and less than or equal to 700 mm. 10. The electric wheeled device according to claim 1, characterized in that the mounting member includes a battery compartment. 11. The electric wheeled device according to claim 1, characterized in that the electric wheeled device comprises a manned lawn mower, an all-terrain vehicle or an electric motorcycle. 12. A power supply assembly, the power supply assembly being used at least to supply power to an electric wheeled device, the electric wheeled device comprising: a running wheel assembly, comprising a first running wheel and a second running wheel; a frame, connecting the first running wheel and the second running wheel; A travel motor having a drive shaft for driving the travel wheel set; Characterized in that the power supply component comprises: a battery pack and a mounting member for mounting the battery pack to connect the battery pack to the vehicle frame; The mounting member includes at least one first coupling portion and at least one second coupling portion; The first combining portion is detachably connected to the battery pack; The second coupling portion is configured to be detachably mounted to the first electric wheeled device or the second electric wheeled device. 13. The power supply assembly according to claim 12, characterized in that the power supply assembly comprises at least one first mounting member and at least one second mounting member; the first mounting member and the second mounting member can accommodate different numbers of battery packs. 14. The power supply assembly according to claim 12, wherein the mounting member comprises a battery compartment.