lawnmower

Abstract

This utility model provides a lawn mowing device. The lawn mowing device includes: a cutting assembly, which includes a motor, a fan blade connected to the motor, and cutting components; a battery pack, which includes a mounting shell and battery cells mounted on the mounting shell; a housing, which includes a cutting space surrounding at least the cutting components; the mounting shell is provided with an air inlet and an air outlet for heat dissipation of the battery pack, and the cutting space includes an air inlet side communicating with the air outlet. The motor drives the fan blade to rotate so that the airflow flowing into the battery pack through the air inlet enters the cutting space through the air inlet side, thereby solving the technical problem of poor heat dissipation in existing lawn mowing devices.

Description

Technical Field

[0001] This utility model relates to the field of garden tool technology, and more specifically, to a grass-cutting device. Background Technology

[0002] Currently, plug-in battery-powered lawnmowers on the market are prone to overheating and shutdown during high-temperature outdoor operations in summer, preventing prolonged operation. Existing technologies offer several solutions to address battery pack overheating, including encasing phase change materials within the battery cells and creating heat dissipation vents within the battery pack. However, encasing phase change materials within the cells is costly to produce; and creating heat dissipation vents concentrates heat within the battery compartment, resulting in poor heat dissipation.

[0003] Therefore, providing a battery pack plug-in lawn mower with low production cost and good heat dissipation is an urgent problem to be solved in this field. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a grass-cutting device with better heat dissipation.

[0005] To achieve the above objectives, the technical solution provided by an embodiment of this utility model is as follows:

[0006] A lawn mowing device includes: a cutting assembly, which includes a motor, a fan blade connected to the motor, and a cutting component; a battery pack, which includes a mounting shell and battery cells mounted on the mounting shell; a housing, which includes a cutting space surrounding at least the cutting component; the mounting shell is provided with an air inlet and an air outlet, and the cutting space includes an air inlet side communicating with the air outlet, wherein the motor drives the fan blade to rotate so that airflow flowing into the battery pack through the air inlet enters the cutting space through the air inlet side. By incorporating an air inlet and an air outlet on the mounting housing, with the outlet connected to the air inlet side of the cutting space, airflow from the air inlet side of the cutting space flows towards the air outlet side when the motor drives the fan to rotate. This allows the airflow within the battery pack to move along the direction from the air inlet to the air outlet and ultimately into the cutting space. This airflow effectively carries heat from the battery pack to the outside of the mounting housing and out through the cutting space, preventing heat accumulation and improving heat dissipation. This prevents the battery cells from overheating and ensures long-term stable operation of the cells. Furthermore, the structure is simple and does not require modifications to the cell structure for heat dissipation, thus reducing production costs.

[0007] Furthermore, the air inlet and air outlet are located on opposite sides of the mounting housing; and / or, the air inlet is positioned opposite the battery cell; and / or, the air outlet is positioned opposite the battery cell. By positioning the air inlet and air outlet on opposite sides of the mounting housing, the air entering the housing through the air inlet can better traverse the opposite sides of the housing, ensuring smooth airflow from the air inlet to the air outlet and improving heat dissipation. By positioning the air inlet opposite the battery cell, the air entering through the air inlet can be directly blown onto the battery cell, thus ensuring better heat dissipation for the battery cell. By positioning the air outlet opposite the battery cell, the high-temperature airflow from the battery cell can smoothly and quickly enter the air outlet and flow out through the air outlet, further improving heat dissipation for the battery cell.

[0008] Furthermore, there are multiple battery cells, arranged to form multiple cell groups; there are multiple air inlets, with at least one air inlet positioned opposite each cell group; and / or, there are multiple air outlets, with at least one air outlet positioned opposite each cell group. By positioning at least one air inlet opposite each cell group, it is easier for external airflow to enter the mounting housing and directly blow onto each cell group, thereby facilitating better heat dissipation for the cells in each cell group and ensuring effective heat dissipation, thus improving the uniformity of heat dissipation. By positioning at least one air outlet opposite each cell group, it is easier for airflow at each cell group within the mounting housing to flow out from the corresponding opposite air outlet, facilitating better heat removal from each cell group, thus further improving the heat dissipation effect on the cells in each cell group and also improving the uniformity of heat dissipation for the battery pack.

[0009] Furthermore, there are multiple battery cells arranged to form two sets of battery cell groups, with the two sets of battery cell groups spaced apart to form a connecting gap; there are multiple air inlets, a portion of which forms a first air inlet group, and another portion of which forms a second air inlet group. The first air inlet group is positioned opposite one of the two sets of battery cell groups, and the second air inlet group is positioned opposite the other of the two sets of battery cell groups; there are multiple air outlets, with at least a portion of the multiple air outlets positioned opposite the connecting gap. The arrangement of the two sets of battery cell groups, the first air inlet group, and the second air inlet group facilitates better flow of external air through the first air inlet group and the second air inlet group to the two sets of battery cell groups, and through the multiple air outlets. By arranging at least a portion of the multiple air outlets opposite to the connecting gap, it is possible to concentrate part of the airflow inside the mounting housing at the connecting gap and flow out through the connecting gap. This facilitates concentrated heat dissipation and increases the flow path of the airflow inside the mounting housing, thereby better dissipating the hot airflow inside the mounting housing and improving the heat dissipation effect on the battery cell.

[0010] Furthermore, the mowing device also includes a battery compartment, which has a heat dissipation inlet, a heat dissipation outlet, and a receiving cavity connected to both the heat dissipation inlet and outlet. The battery pack is installed in the receiving cavity. The air inlet is connected to the heat dissipation inlet, and the air outlet is connected to the air inlet side through the heat dissipation outlet. By setting up the battery compartment, it is easy to install and protect the battery pack. The heat dissipation inlet on the battery compartment allows external airflow to be easily introduced into the receiving cavity and into the air inlet. The heat dissipation outlet on the battery compartment allows airflow inside the mounting housing to be easily led out and directed to the air inlet side of the cutting space, thereby better ensuring smooth airflow and ensuring the heat dissipation effect of the battery cells inside the battery pack.

[0011] Furthermore, the heat dissipation outlet and the air outlet are positioned opposite each other; or, the heat dissipation outlet and the air outlet are connected or attached to each other. Positioning the heat dissipation outlet opposite the air outlet facilitates the rapid flow of air exiting the air outlet through the heat dissipation outlet, effectively ensuring heat dissipation for the cells within the battery pack. This configuration only requires limiting the positional relationship between the heat dissipation outlet and the air outlet; they do not necessarily need to be connected. Connecting or attaching the heat dissipation outlet to the air outlet ensures that the airflow exiting the air outlet can fully exit through the heat dissipation outlet, and this connection or attachment makes the connection between the air outlet and the heat dissipation outlet more stable and reliable.

[0012] Furthermore, a flow-guiding groove is provided on the inner wall of the receiving cavity, and a heat dissipation outlet is located on the bottom wall of the flow-guiding groove; and / or, the battery compartment includes a flow-guiding pipe connected to the receiving cavity, the flow-guiding pipe is located on the outer wall of the receiving cavity and forms a guide channel, the heat dissipation outlet is located at one end of the guide channel, and the other end of the guide channel communicates with the cutting space. By providing a flow-guiding groove on the inner wall of the receiving cavity, the flow-guiding groove has the function of concentrating and guiding the airflow. The airflow in the mounting cavity is concentrated at the flow-guiding groove and then flows out from the heat dissipation outlet on the bottom wall of the flow-guiding groove, thereby facilitating better concentration and extraction of the airflow in the mounting cavity, thereby improving the heat dissipation effect on the battery cells of the battery pack. By providing a flow-guiding pipe, it is possible to concentrate and export the airflow flowing out of the heat dissipation outlet, so as to better guide the airflow to the cutting space, so as to concentrate and export the heat from the battery cells to the outside, thereby better improving the heat dissipation effect on the battery pack.

[0013] Furthermore, the mowing device also includes a connecting pipe, one end of which is connected to a heat dissipation outlet, and the other end of which is connected to the housing. By setting up the connecting pipe, it is possible to effectively concentrate the airflow flowing out of the heat dissipation outlet to the cutting space of the housing and discharge it to the outside. Moreover, different connection shapes can be set according to different structures of the mowing device, thereby effectively ensuring the heat dissipation effect on the battery pack.

[0014] Furthermore, the battery compartment also includes a guide pipe, which is installed on the outer wall of the receiving cavity and forms a guide channel. The heat dissipation outlet is located at one end of the guide channel, and the other end of the guide channel is connected to a connecting pipe. By setting up the guide pipe, the heat flowing out of the heat dissipation outlet can be effectively guided through the guide channel to the connecting pipe, and then flow through the connecting pipe to the cutting space, so as to be discharged to the outside from the cutting space. This effectively ensures the smooth exhaust of airflow within the mounting shell and effectively ensures the heat dissipation of the battery cells.

[0015] Furthermore, the battery compartment includes a compartment body and a compartment cover, with a receiving cavity provided in the compartment body; wherein, the compartment body and / or the compartment cover are provided with heat dissipation inlets; or, at least a portion of the compartment body and the compartment cover are spaced apart to form heat dissipation inlets. By providing heat dissipation inlets in the compartment body and / or the compartment cover, it is possible to effectively allow outside air to flow in through the heat dissipation inlets. By making at least a portion of the compartment body and the compartment cover spaced apart to form heat dissipation inlets, it is not necessary to design separate holes in the compartment body and the compartment cover; only the fit between the compartment body and the compartment cover needs to be considered.

[0016] Furthermore, the inner wall of the receiving cavity includes a first inner wall and a second inner wall disposed opposite to each other, the receiving cavity is inclined, and the first inner wall is located below the second inner wall; the mounting shell includes a first shell plate and a second shell plate disposed opposite to each other; wherein, the first shell plate is provided with an air outlet and is supported on the first inner wall; and / or, the second shell plate is provided with an air inlet, and the second shell plate is spaced apart from the second inner wall. By supporting the first shell plate on the first inner wall, the stability of the battery pack can be ensured, and the installation stability of the battery pack can be improved. By providing an air inlet on the second shell plate and spaced apart from the second inner wall, the airflow entering the receiving cavity can pass through the gap between the second shell plate and the second inner wall before entering the air inlet, thereby ensuring smooth airflow at the air inlet.

[0017] Furthermore, the battery pack has a locking position that locks with the battery compartment and a detachable position that is movable relative to the battery compartment; when the battery pack is in the locked position, the air outlet connects with the heat dissipation outlet. With this structural design, when the battery pack is in the locked position, it can enter the working state, thus effectively ensuring that the heat inside the battery pack flows smoothly from the air outlet to the heat dissipation outlet, thereby improving the heat dissipation effect.

[0018] Furthermore, a first snap-fit ​​structure is provided on the inner wall of the receiving cavity, and a second snap-fit ​​structure adapted to the first snap-fit ​​structure is provided on the mounting shell; an elastic reset member is provided on the inner bottom wall of the receiving cavity, the elastic reset member having a compressed state and an ejected state; wherein, when the battery pack is in the locked position, the first snap-fit ​​structure and the second snap-fit ​​structure are engaged, and the elastic reset member is in the compressed state; when the battery pack is in the disassembled position, the first snap-fit ​​structure and the second snap-fit ​​structure are arranged to avoid each other, and the elastic reset member is in the ejected state. Through the engagement of the first snap-fit ​​structure and the second snap-fit ​​structure, combined with the switching between the compressed state and the ejected state of the elastic reset member, the stability of the battery pack in the locked position can be effectively ensured, and the battery pack can be smoothly ejected for easy removal, ensuring the convenience of disassembly and assembly.

[0019] Furthermore, the ejection stroke of the elastic reset member from the compressed state to the ejected state is L, where L is in the range of 15mm ≤ L ≤ 30mm; and / or, the elastic coefficient of the elastic reset member is K, where K ≥ 4. By setting the ejection stroke of the elastic reset member within the above range, the smoothness of disassembly and assembly can be effectively ensured, facilitating the loading and unloading of the battery pack. When the ejection stroke is too large, the battery pack may be ejected too much or even popped out of the battery compartment; when the ejection stroke is too small, the ejected portion of the battery pack may be too short, making it difficult to remove the battery pack. By setting the elastic coefficient of the elastic reset member within the above range, the ejection force on the battery pack can be ensured, so that the battery pack can be ejected to a preset height, facilitating the disassembly and assembly of the battery pack.

[0020] This invention offers the following advantages: By providing an air inlet and an air outlet on the mounting housing, and connecting the air outlet to the air inlet side of the cutting space, when the motor drives the fan blades to rotate, the airflow from the air inlet side of the cutting space flows towards the air outlet side. This allows the airflow within the battery pack to flow along the direction from the air inlet to the air outlet and ultimately into the cutting space. The airflow along the air inlet to the air outlet effectively carries heat from the battery pack to the outside of the mounting housing and out through the cutting space, preventing heat accumulation and improving heat dissipation. This avoids overheating of the battery cells and ensures long-term stable operation of the battery cells. This application solves the problems of poor heat dissipation and high production costs in existing plug-in battery pack lawnmowers. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic diagram of the structure of a lawn mowing device provided in a specific embodiment of this utility model;

[0023] Figure 2 A cross-sectional view of a lawn mowing device provided in a specific embodiment of this utility model;

[0024] Figure 3 for Figure 2 Enlarged view of the partial structure of the battery compartment and cutting space;

[0025] Figure 4 A schematic diagram of the battery pack installation structure provided in a specific embodiment of this utility model;

[0026] Figure 5 A schematic diagram of a portion of the battery compartment structure provided in a specific embodiment of this utility model;

[0027] Figure 6 A cross-sectional view of a portion of the battery compartment structure provided in a specific embodiment of this utility model;

[0028] Figure 7 A schematic diagram of the battery pack from one perspective, provided in a specific embodiment of the present invention;

[0029] Figure 8 A schematic diagram of the battery pack from another perspective, provided as a specific embodiment of the present invention;

[0030] Figure 9 This is a structural schematic diagram of a battery pack provided in a specific embodiment of the present invention from another perspective;

[0031] Figure 10 This is a schematic diagram of the internal structure of a battery pack provided in a specific embodiment of the present invention.

[0032] The above figures include the following reference numerals:

[0033] 10. Housing; 11. Cutting space; 111. Air inlet side;

[0034] 20. Cutting components;

[0035] 30. Battery pack; 31. Mounting housing; 311. Air inlet; 3111. First air inlet group; 3112. Second air inlet group; 312. Air outlet; 313. Mounting space; 314. First shell plate; 315. Second shell plate; 32. Cell group; 321. Cell; 33. Second snap-fit ​​structure;

[0036] 40. Electric motor;

[0037] 50. Wind blades;

[0038] 60. Battery compartment; 61. Heat dissipation inlet; 62. Heat dissipation outlet; 63. Receiving cavity; 631. First inner wall; 632. Second inner wall; 64. Guide groove; 65. Compartment body; 651. Outer shell; 652. Inner shell; 66. Guide tube; 67. Compartment cover; 68. First snap-fit ​​structure; 69. Elastic reset element; 610. Switch knob; 611. Top block;

[0039] 70. Connecting pipe; 71. First pipe section; 72. Second pipe section;

[0040] 80. Housing. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0043] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0044] In the description of the embodiments of this utility model, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0045] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0046] In the description of the embodiments of this utility model, it should also be noted that the terms "first" and "second" used herein do not specifically refer to any order or sequence, nor are they intended to limit this case; they are merely used to distinguish components or operations described using the same technical terms.

[0047] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0048] The technical solution of this utility model will now be described with reference to the accompanying drawings.

[0049] To address the issues of poor heat dissipation and high production costs in existing battery pack plug-in lawn mowers, this invention provides a lawn mower device.

[0050] To achieve the above objectives, the technical solution provided by an embodiment of this utility model is as follows:

[0051] like Figures 1 to 10 As shown, this utility model provides a lawn mowing device. Figure 1 and 2As shown, the lawn mowing device includes a cutting assembly, a battery pack 30, and a housing 10. The cutting assembly includes a motor 40, a fan blade 50 connected to the motor 40, and a cutting component 20. The cutting component 20 is used for mowing operations and may include cutting blades. The battery pack 30 includes a mounting housing 31 and battery cells 321 mounted on the mounting housing 31. The housing 10 includes a cutting space 11 surrounding the cutting component 20, and also includes a cutting outlet. The cutting space 11 communicates with the outside air through the cutting outlet. The mounting housing 31 is provided with an air inlet 311 and an air outlet 312 for heat dissipation of the battery pack 30. The cutting space 11 includes an air inlet side 111 communicating with the air outlet 312. The motor 40 drives the fan blade 50 to rotate so that the airflow flowing into the battery pack 30 through the air inlet 311 passes through the air inlet side 111 and enters the cutting space 11.

[0052] The lawn mowing device provided in this embodiment has an air inlet 311 and an air outlet 312 on the mounting housing 31, with the air outlet 312 connected to the air inlet side 111 of the cutting space 11. When the motor 40 drives the fan blade 50 to rotate, the airflow from the air inlet side 111 of the cutting space 11 flows towards the air outlet side of the cutting space 11. This allows the airflow within the battery pack 30 to flow along the direction from the air inlet 311 to the air outlet 312 and ultimately into the cutting space 11. The airflow along the air inlet 311 to the air outlet 312 of the battery pack 30 effectively carries heat from the battery pack 30 to the outside of the mounting housing 31 and out through the cutting space 11, thereby improving the heat dissipation of the battery pack 30 and preventing the battery cells 321 from overheating. Furthermore, the lawn mowing device in this embodiment has a simple structure and does not require any heat dissipation improvements to the battery cell 321 itself, thus reducing the corresponding production cost. Therefore, the mowing device in this embodiment can meet the requirements of long-term operation under heavy load and harsh conditions, even with a 30-hour battery pack.

[0053] In this embodiment, the fan blade 50 can be a centrifugal fan blade 50. The motor 40 drives the fan blade 50 to rotate, thereby performing air extraction. The heat is dissipated through the air inlet 311, the interior of the mounting housing 31, and the air outlet 312, forming a heat dissipation airflow path. The high-speed airflow in the airflow path carries away the heat from the battery pack 30, effectively dissipating the heat inside the mounting housing 31. This design results in high heat dissipation efficiency and low cost.

[0054] Specifically, the mounting housing 31 has a mounting space 313, and the battery cell 321 is installed in the mounting space 313.

[0055] In order to facilitate better airflow within the mounting housing 31, the air inlet 311 and the air outlet 312 on the mounting housing 31 are located on opposite sides of the mounting housing 31.

[0056] To improve the heat dissipation of battery cell 321, the air inlet 311 can be positioned opposite to battery cell 321.

[0057] To improve the heat dissipation of the battery cell 321 in the battery pack 30, the air vent 312 can be positioned opposite the battery cell 321.

[0058] Specifically, multiple battery cells 321 can be configured, and these multiple cells 321 can be arranged to form multiple battery cell groups 32. Multiple air inlets 311 can be configured, with at least one air inlet 311 positioned opposite to each battery cell group 32. This facilitates heat dissipation for each battery cell group 32 and improves heat dissipation uniformity. To further enhance heat dissipation for each battery cell group 32, multiple air outlets 312 can also be configured, with at least one air outlet 312 positioned opposite to each battery cell group 32.

[0059] Specifically, such as Figures 7 to 10 As shown, in this embodiment, there are multiple battery cells 321, which are arranged to form two sets of battery cell groups 32. The two sets of battery cell groups 32 are spaced apart to form a communication gap. There are multiple air inlets 311, a portion of which forms a first air inlet group 3111, and another portion of which forms a second air inlet group 3112. The first air inlet group 3111 is positioned opposite to one of the two sets of battery cell groups 32, and the second air inlet group 3112 is positioned opposite to the other of the two sets of battery cell groups 32. There are multiple air outlets 312, at least a portion of which is positioned opposite to the communication gap. This allows for effective optimization of the structural layout of the battery cells 321 within the mounting housing 31. Combined with the structural layout of the battery cells 321 within the mounting housing 31 and the placement of the air inlet 311 and outlet 312, it facilitates better optimization of the airflow path within the mounting housing 31, thereby effectively ensuring the heat dissipation of the battery cells 321 within the mounting housing 31. Specifically, the battery pack 30 is installed at an angle, with the air inlet 311 and outlet 312 respectively located on the upper and lower sides of the battery pack 30 (the upper side of the upper and lower sides is located above the lower side of the upper and lower sides). Specifically, the battery pack 30 can be a hexahedral structure with three pairs of oppositely arranged sides, and the air inlet 311 and outlet 312 can be located on any pair of oppositely arranged sides.

[0060] Of course, in other embodiments, the air inlet 311 and the air outlet 312 do not need to be installed on opposite sides of the mounting housing 31. It is sufficient to arrange the air inlet 311 and the air outlet 312 at intervals. Specifically, the air inlet 311 and the air outlet 312 can be arranged on two adjacent sides. Specifically, the battery pack 30 has a hexahedral structure and is placed at an angle. The battery pack 30 has a top surface, a bottom surface, and four sides located between the top surface and the bottom surface. The air outlet 312 can be arranged on the bottom surface, and the air inlet 311 can be arranged on at least one of the four sides.

[0061] In this application, as Figure 2 and 3 As shown, the lawnmower also includes a battery compartment 60, which has a heat dissipation inlet 61, a heat dissipation outlet 62, and a receiving cavity 63 that communicates with both the heat dissipation inlet 61 and the heat dissipation outlet 62. A battery pack 30 is installed within the receiving cavity 63. An air inlet 311 communicates with the heat dissipation inlet 61, and an air outlet 312 communicates with the air inlet side 111 via the heat dissipation outlet 62. This facilitates the installation and protection of the battery pack 30, and also facilitates effective heat dissipation of the battery cells 321 within the battery pack 30 through the heat dissipation inlet 61 and the heat dissipation outlet 62.

[0062] In order to ensure that heat can be effectively flowed from the air outlet 312 to the heat dissipation outlet 62, in one embodiment the heat dissipation outlet 62 can be arranged opposite to the air outlet 312; in another embodiment the heat dissipation outlet 62 can be connected to or attached to the air outlet 312.

[0063] To facilitate effective airflow guidance within the receiving cavity 63, a flow-guiding groove 64 can be provided on the inner wall of the receiving cavity 63, and a heat dissipation outlet 62 is located on the bottom wall of the flow-guiding groove 64. During heat dissipation, the airflow within the receiving cavity 63 will be concentrated at the flow-guiding groove 64 and smoothly discharged through the heat dissipation outlet 62 at the bottom of the flow-guiding groove 64.

[0064] Specifically, the battery compartment 60 includes a guide pipe 66 connected to the receiving cavity 63. The guide pipe 66 is disposed on the outer wall of the receiving cavity 63 and forms a guide channel. The heat dissipation outlet 62 is located at one end of the guide channel, and the other end of the guide channel is connected to the cutting space 11. By setting the guide pipe 66, the airflow flowing out of the heat dissipation outlet 62 can be concentrated and discharged, so as to better guide the airflow to the cutting space 11, so as to concentrate the heat dissipation of the cell 321 to the outside, thereby improving the heat dissipation effect of the battery pack 30.

[0065] In this embodiment, the mowing device also includes a connecting pipe 70, one end of which is connected to the heat dissipation outlet 62, and the other end of which is connected to the housing 10. The connecting pipe 70 facilitates a stable and effective connection between the heat dissipation outlet 62 and the cutting space 11, thereby ensuring a stable heat dissipation effect.

[0066] Specifically, in this embodiment, one end of the connecting pipe 70 is connected to the guide pipe 66 so as to connect to the heat dissipation outlet 62 through the guide pipe 66. This facilitates the effective concentration and guidance of airflow, so as to improve the heat dissipation effect on the battery cell 321 inside the mounting housing 31.

[0067] In this embodiment, the connecting pipe 70 includes a first pipe section 71 and a second pipe section 72 connected to each other. The extending direction of the first pipe section 71 is consistent with the extending direction of the guide pipe 66 to facilitate the connection between the first pipe section 71 and the guide pipe 66. The extending direction of the second pipe section 72 is consistent with the extending direction of the housing 10 to facilitate the connection between the second pipe section 72 and the housing 10. The connection between the first pipe section 71 and the second pipe section 72 is a curved transition to facilitate the guidance of airflow, allowing the airflow to flow smoothly from the first pipe section 71 to the second pipe section 72. Of course, in other embodiments, the connecting pipe can be of other connection forms, with different connection shapes provided according to the different structures of the mowing device.

[0068] In this embodiment, the battery compartment 60 includes a compartment body 65 and a compartment cover 67, with a receiving cavity 63 provided on the compartment body 65. In one embodiment, a heat dissipation inlet 61 may be provided on the compartment body 65 and / or the compartment cover 67; in another embodiment, at least a portion of the compartment body 65 and the compartment cover 67 are spaced apart to form the heat dissipation inlet 61. Both of these embodiments effectively ensure that external air can effectively enter the receiving cavity 63 through the heat dissipation inlet 61, so that it can enter the mounting shell 31 through the receiving cavity 63 to dissipate heat from the battery cell 321.

[0069] Specifically, in this embodiment, the cover 67 is closable on the compartment 65 to close or open the compartment 65. When it is necessary to disassemble or assemble the battery pack 30, the compartment 65 can be opened first, and then the battery pack 30 can be placed into the receiving cavity 63 or taken out of the receiving cavity 63.

[0070] In this embodiment, the battery compartment 60 includes an outer shell 651 and an inner shell 652 connected to each other. The inner shell 652 is disposed inside the outer shell 651 and forms a receiving cavity 63. A heat dissipation inlet 61 is disposed on the outer shell 651. The heat dissipation inlet 61 can be a round hole, a square hole, a strip hole, or a combination thereof, or other forms. The compartment cover 67 is disposed on the outer shell 651 and can be opened and closed. A heat dissipation outlet 62 is disposed on the inner shell 652.

[0071] Specifically, the inner wall of the receiving cavity 63 includes a first inner wall 631 and a second inner wall 632 disposed opposite to each other. The receiving cavity 63 is inclined, and the first inner wall 631 is located below the second inner wall 632. The mounting shell 31 includes a first shell plate 314 and a second shell plate 315 disposed opposite to each other. The first shell plate 314 is provided with an air outlet 312 and is supported on the first inner wall 631 to ensure the installation stability of the battery pack 30 and to facilitate smooth airflow. Specifically, the second shell plate 315 is provided with an air inlet 311, and the second shell plate 315 is spaced apart from the second inner wall 632 to ensure smooth airflow so that airflow can smoothly enter the air inlet 311.

[0072] Specifically, the connecting pipe 70 can be a rigid pipe structure. The connecting pipe 70 can effectively support the inclined battery pack 30 supported on the first inner wall 631 through the outer wall of the receiving cavity 63, thereby improving the installation stability of the battery pack 30 and the overall structural stability.

[0073] In this embodiment, the lawn mowing device includes a housing 80, and a battery compartment 60 is mounted on the housing 80.

[0074] In this embodiment, the battery pack 30 has a locked position that locks with the battery compartment 60 and a detachable position that is movable relative to the battery compartment 60. When the battery pack 30 is in the locked position, the air outlet 312 is connected to the heat dissipation outlet 62. Specifically, when the battery pack 30 is in the locked position, the battery pack 30 can enter the working state. This effectively ensures that the heat inside the battery pack 30 flows smoothly from the air outlet 312 to the heat dissipation outlet 62, thereby improving the heat dissipation effect.

[0075] To facilitate easy assembly and disassembly of the battery pack 30, a first snap-fit ​​structure 68 is provided on the inner wall of the receiving cavity 63, and a second snap-fit ​​structure 33 adapted to the first snap-fit ​​structure 68 is provided on the mounting shell 31; an elastic reset member 69 is provided on the inner bottom wall of the receiving cavity 63, which has a compressed state and an ejected state. Specifically, when the battery pack 30 is in the locked position, the first snap-fit ​​structure 68 and the second snap-fit ​​structure 33 engage, and the elastic reset member 69 is in the compressed state to ensure the installation stability of the battery pack 30; when the battery pack 30 is in the disassembly position, the first snap-fit ​​structure 68 and the second snap-fit ​​structure 33 are positioned to avoid contact, and the elastic reset member 69 is in the ejected state to facilitate the removal of the battery pack 30.

[0076] Specifically, the first snap-fit ​​structure 68 and the second snap-fit ​​structure 33 can both be hooks; or, one of the first snap-fit ​​structure 68 and the second snap-fit ​​structure 33 can be a hook, and the other of the second snap-fit ​​structure 33 can be a slot adapted to the hook.

[0077] To facilitate battery installation and removal, an operating part can be provided that cooperates with the first latching structure 68. The operating part connects to the first latching structure 68 and moves it to a position where it engages with the second latching structure 33, or a position that avoids the second latching structure 33. Specifically, the operating part can be a switch knob 610 and a spring element. The switch knob 610 moves the first latching structure 68. The switch knob 610 can be rotatable.

[0078] To improve the ejection effect of the battery pack 30, the elastic reset member 69 can be positioned in the middle of the inner bottom wall of the receiving cavity 63, so that the ejection force of the elastic reset member 69 can be applied evenly and effectively to the battery pack 30.

[0079] To ensure the uniformity of the ejection force on the battery pack 30, the direction of the elastic force of the elastic reset member 69 can be aligned with the direction of the inclined placement of the battery pack 30.

[0080] Specifically, the elastic reset member 69 can be a spring. Preferably, the extension direction of the spring is consistent with the inclined placement direction of the battery pack 30, so as to improve the uniformity and reliability of the action on the battery pack 30.

[0081] In this embodiment, one end of the elastic reset member 69 is fixedly disposed, and the other end of the elastic reset member 69 is retractably disposed relative to the other end. The battery compartment 60 also includes a top block 611, which is connected to the other end of the elastic reset member 69.

[0082] Specifically, the process of the battery pack 30 entering the locked state is as follows: the battery pack 30 slides into the receiving cavity 63 of the battery compartment 60, and the first locking structure 68 moves backward under the guidance; when the battery pack 30 reaches the locked position, the first locking structure 68 is inserted into the second locking structure 33 of the battery pack 30 under the spring force of the elastic element to lock the battery pack 30. The process of the battery pack 30 entering the pop-up state is as follows: the switch knob 610 is pulled, the first locking structure 68 moves backward, and the battery pack 30 pops out under the action of the top block 611, so that the battery pack 30 is in the pop-up state.

[0083] In this embodiment, the ejection stroke of the elastic reset member 69 from the compressed state to the ejected state is L, and the range of L is 15mm≤L≤30mm. By setting the ejection stroke of the elastic reset member 69 within the above range, it is possible to effectively ensure the smoothness of disassembly and assembly, and facilitate the removal and placement of the battery pack 30. When the ejection stroke is too large, the battery pack 30 may be ejected too much or even popped out of the battery compartment 60. When the ejection stroke is too small, the part of the battery pack 30 that is ejected may be too short, which is not conducive to removing the battery pack 30.

[0084] Specifically, the elastic coefficient of the elastic reset member 69 is K, where K ≥ 4. By setting the elastic coefficient of the elastic reset member 69 within the above range, it is possible to ensure the ejection force on the battery pack 30, so that the battery pack 30 can be ejected to a preset height, facilitating the installation and removal of the battery pack 30. By setting the range of the elastic coefficient of the elastic reset member 69, the ejection force of the elastic reset member 69 on the battery pack 30 can be greater than or equal to 60N, thereby effectively ensuring the ejection operation of the battery pack 30.

[0085] This utility model has at least the following beneficial effects: it improves the heat dissipation effect of the battery pack 30, has high heat dissipation efficiency, can effectively ensure the long-term stable operation of the battery cells 321 in the battery pack 30, can meet the requirements of the battery pack 30 for long-term operation or long-term operation under heavy load and harsh working conditions, has a simple structure and low manufacturing cost.

[0086] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0087] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A lawn mowing device, comprising: A cutting assembly, the cutting assembly including a motor (40), a fan blade (50) connected to the motor (40) and a cutting component (20); A battery pack (30), the battery pack (30) including a mounting shell (31) and battery cells (321) mounted on the mounting shell; A housing (10), the housing (10) comprising at least a cutting space (11) surrounding the cutting member (20); characterized in that: The mounting housing (31) is provided with an air inlet (311) and an air outlet (312). The cutting space (11) includes an air inlet side (111) that communicates with the air outlet (312). The motor (40) drives the fan blade (50) to rotate so that the airflow flowing into the battery pack (30) through the air inlet (311) passes through the air inlet side (111) and enters the cutting space (11).

2. The lawn mowing device according to claim 1, characterized in that, The air inlet (311) and the air outlet (312) are located on opposite sides of the mounting housing (31); and / or, The air inlet (311) is disposed opposite to the battery cell (321); and / or, The air outlet (312) is positioned opposite to the battery cell (321).

3. The lawn mowing device according to claim 1, characterized in that, There are multiple battery cells (321), and the multiple battery cells (321) are arranged to form multiple battery cell groups (32); There are multiple air inlets (311), and at least one air inlet (311) is disposed opposite to each battery cell assembly (32); and / or, There are multiple air outlets (312), and at least one air outlet (312) is arranged opposite to each battery cell group (32).

4. The lawn mowing device according to claim 1, characterized in that, The battery cells (321) are multiple, and the multiple battery cells (321) are arranged to form two sets of battery cell groups (32). The two sets of battery cell groups (32) are spaced apart to form a communication gap. The air inlets (311) are multiple, and a portion of the multiple air inlets (311) forms a first air inlet group (3111), and another portion of the multiple air inlets (311) forms a second air inlet group (3112). The first air inlet group (3111) is arranged opposite to one of the two sets of battery cell groups (32), and the second air inlet group (3112) is arranged opposite to the other of the two sets of battery cell groups (32). The air outlets (312) are multiple, and at least a portion of the multiple air outlets (312) is arranged opposite to the communication gap.

5. The mowing device according to any one of claims 1 to 4, characterized in that, The mowing device also includes: The battery compartment (60) is provided with a heat dissipation inlet (61), a heat dissipation outlet (62), and a receiving cavity (63) that is connected to both the heat dissipation inlet (61) and the heat dissipation outlet (62). The battery pack (30) is used to be installed in the receiving cavity (63). The air inlet (311) is connected to the heat dissipation inlet (61), and the air outlet (312) is connected to the air inlet side through the heat dissipation outlet (62).

6. The lawn mowing device according to claim 5, characterized in that, The heat dissipation outlet (62) is disposed opposite to the air outlet (312); or, The heat dissipation outlet (62) is connected to or attached to the air outlet (312).

7. The lawn mowing device according to claim 5, characterized in that, A flow-guiding groove (64) is provided on the inner sidewall of the receiving cavity (63), and the heat dissipation outlet (62) is provided on the bottom wall of the flow-guiding groove (64); and / or, The battery compartment (60) includes a guide pipe (66) connected to the receiving cavity (63). The guide pipe (66) is disposed on the outer wall of the receiving cavity (63) and forms a guide channel. The heat dissipation outlet (62) is located at one end of the guide channel, and the other end of the guide channel is connected to the cutting space (11).

8. The lawn mowing device according to claim 5, characterized in that, The mowing device also includes a connecting pipe (70), one end of which is connected to the heat dissipation outlet (62), and the other end of which is connected to the housing (10).

9. The lawn mowing device according to claim 8, characterized in that, The battery compartment (60) also includes a guide pipe (66), which is disposed on the outer wall of the receiving cavity (63) and forms a guide channel. The heat dissipation outlet (62) is located at one end of the guide channel, and the other end of the guide channel is connected to the connecting pipe (70).

10. The lawn mowing device according to claim 5, characterized in that, The battery compartment (60) includes a compartment body (65) and a compartment cover (67), and the compartment body (65) is provided with the receiving cavity (63); The heat dissipation inlet (61) is provided on the compartment body (65) and / or the compartment cover (67); or, The chamber body (65) and the chamber cover (67) are at least partially spaced apart to form the heat dissipation inlet (61).

11. The lawn mowing device according to claim 5, characterized in that, The inner wall of the receiving cavity (63) includes a first inner wall (631) and a second inner wall (632) disposed opposite to each other. The receiving cavity (63) is inclined, and the first inner wall (631) is located below the second inner wall (632). The mounting shell (31) includes a first shell plate (314) and a second shell plate (315) disposed opposite to each other. Wherein, the first shell plate (314) is provided with the air outlet (312), and the first shell plate (314) is supported on the first inner wall (631); and / or, The second shell plate (315) is provided with the air inlet (311), and the second shell plate (315) is spaced apart from the second inner wall (632).

12. The lawn mowing device according to claim 5, characterized in that, The battery pack (30) has a locked position that locks with the battery compartment (60) and a detachable position that is movable relative to the battery compartment (60); when the battery pack (30) is in the locked position, the air outlet (312) is connected to the heat dissipation outlet (62).

13. The lawnmower according to claim 12, characterized in that, The inner wall of the receiving cavity (63) is provided with a first snap-fit ​​structure (68), and the mounting shell (31) is provided with a second snap-fit ​​structure (33) that is adapted to the first snap-fit ​​structure (68); the inner bottom wall of the receiving cavity (63) is provided with an elastic reset member (69), which has a compressed state and an ejected state. When the battery pack (30) is in the locked position, the first snap-fit ​​structure (68) and the second snap-fit ​​structure (33) are snap-fitted together, and the elastic reset member (69) is in a compressed state; when the battery pack (30) is in the disassembled position, the first snap-fit ​​structure (68) and the second snap-fit ​​structure (33) are arranged to avoid each other, and the elastic reset member (69) is in the ejected state.

14. The lawnmower according to claim 13, characterized in that, The ejection stroke of the elastic reset member (69) from the compressed state to the ejection state is L, and the range of L is 15mm ≤ L ≤ 30mm; and / or, The elastic coefficient of the elastic reset member (69) is K, where K≥4.

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