Outdoor work vehicle

Abstract

The utility model relates to an outdoor operation vehicle which comprises a walking assembly configured to support the outdoor operation vehicle to walk; the power output assembly is configured to execute outdoor operation; the power supply system is at least configured to supply power to the outdoor working vehicle, and the power supply system comprises a battery compartment; the battery pack is assembled in the battery compartment; the power management device comprises a shell and a circuit board assembly located in the shell, the circuit board assembly at least comprises two circuit boards arranged in a stacked mode, and each circuit board in the two circuit boards arranged in the stacked mode is provided with a connecting part. In the stacking direction, the orthographic projection planes of the two circuit boards have an overlapping area, and at least part of the connecting part on at least one circuit board is located outside the overlapping area. According to the outdoor operation vehicle, wiring interference caused by space limitation of the circuit boards can be reduced, the wiring efficiency is improved, and the two stacked circuit boards do not need to be split.

Description

[TECHNICAL FIELD]

[0001] The present application relates to the technical field of work equipment, in particular to an outdoor work vehicle. [BACKGROUND]

[0002] With the development of battery technology, outdoor work vehicles are gradually replaced by engine drive by electric drive. The battery pack usually contains one or more battery cores, which can be used as a power source for outdoor work vehicles or as a power supply for portable power tools. As a power management device for managing the charging and discharging of the battery pack, it is an essential device for electrically driven outdoor work vehicles.

[0003] The power management device includes a housing and a circuit board assembly mounted in the housing, the circuit board assembly includes a circuit board for large current and a circuit board for control. In order to reduce the use of space, the circuit boards are often arranged in a stacked manner, and the mounting surfaces of the circuit boards are arranged in the same direction. This will cause the circuit board located on the mounting surface corresponding to another circuit board to be inconvenient when connecting external wires, and the stacked circuit boards need to be detached from each other. This is troublesome and time-consuming.

[0004] Therefore, it is necessary to provide an improved outdoor work vehicle to overcome the defects of the prior art. [SUMMARY]

[0005] In view of the deficiencies of the prior art, one of the purposes of the present application is to provide an outdoor work vehicle that can reasonably arrange the connection terminals on the circuit board.

[0006] The technical solution adopted by the present application to solve the problems of the prior art is: an outdoor work vehicle, comprising:

[0007] a walking assembly configured to support the outdoor work vehicle to walk; a power output assembly configured to perform outdoor work; a power supply system configured to at least power the outdoor work vehicle, the power supply system comprising: a battery compartment; a battery pack assembled in the battery compartment; and a power management device comprising a housing and a circuit board assembly located in the housing, the circuit board assembly comprising at least two circuit boards arranged in a stacked manner, each of the two circuit boards arranged in a stacked manner is provided with a connecting portion; in the stacking direction, the projection area of the two circuit boards has an overlapping area, and the connecting portion on at least one of the circuit boards is at least partially located outside the overlapping area.

[0008] In some embodiments, in the stacking direction, the projection area of one of the two circuit boards is greater than the projection area of the other circuit board, and the connecting portion on the larger circuit board is located outside the overlapping area.

[0009] In some embodiments, one of the two circuit boards is at least configured as a first circuit board capable of supplying power to the walking assembly and / or the power output assembly, and the other is at least configured as a second circuit board capable of outputting communication information; the connection portion on the first circuit board is configured as a first connection portion connected to an external device, and the connection portion on the second circuit board is configured as a second connection portion connected to an external device; in the stacking direction, the orthographic projection plane of the first circuit board and the orthographic projection plane of the second circuit board have an overlapping area, and the first connection portion on the first circuit board is at least partially located outside the overlapping area.

[0010] In some embodiments, one of the two circuit boards is at least configured as a first circuit board capable of supplying power to the walking assembly and / or the power output assembly, and the other is at least configured as a second circuit board capable of outputting communication information; the first circuit board is provided with a first mounting surface for mounting a first connection portion, and the second circuit board is provided with a second mounting surface for mounting a second connection portion, and the first mounting surface and the second mounting surface are oriented in the same direction.

[0011] In some embodiments, the first connection portion is provided on the first mounting surface of the first circuit board, and the first connection portion includes a first terminal group and a second terminal group located in different areas; in the stacking direction, the orthographic projection plane of the first circuit board and the orthographic projection plane of the second circuit board have an overlapping area, and the first terminal group and the second terminal group are located on both sides of the overlapping area.

[0012] In some embodiments, the battery compartment includes a first side plate and a second side plate arranged oppositely, the battery pack is located between the first side plate and the second side plate, and the first side plate and the second side plate are both provided with external terminals capable of being connected to the battery pack; in the horizontal direction, the first terminal group is arranged close to the first side plate, and the second terminal group is arranged close to the second side plate; the first terminal group can be connected to the external terminals on the first side plate, and the second terminal group can be connected to the external terminals on the second side plate.

[0013] In some embodiments, the first terminal group and the second terminal group on the first circuit board are located on both sides of the second circuit board and arranged in front of and behind the advancing direction of the outdoor working vehicle.

[0014] In some embodiments, the first connection portion is provided on the first mounting surface of the first circuit board, and the first connection portion includes a first terminal group and a second terminal group located in different areas, and the first terminal group and the second terminal group are located on the same side of the overlapping area.

[0015] In some embodiments, one of the two circuit boards is a first circuit board configured to supply power to the walking assembly and / or the power output assembly, and the other is a second circuit board configured to output communication information, one surface of the first circuit board is arranged in abutment with the housing, and the other surface is connected to the second circuit board through a connecting member.

[0016] In some embodiments, the first circuit board is configured to supply power to the second circuit board, and the second circuit board is configured to output communication information to the first circuit board.

[0017] Compared with the prior art, the present application has the following beneficial effects:

[0018] In the present application, the two circuit boards have an overlapping area in the stacking direction, and the mounting surface of one of the circuit boards corresponds to the other circuit board. In order to reduce the interference of the other circuit board, the connecting part of the circuit board affected by the other circuit board on the mounting surface is placed outside the overlapping area, so as to reduce the wiring interference caused by the space limitation of the circuit board, improve the wiring efficiency, and avoid the need to disassemble the two stacked circuit boards. [BRIEF DESCRIPTION OF DRAWINGS]

[0019] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings:

[0020] Figure 1 is a whole vehicle perspective view of an outdoor work vehicle in some embodiments of the present application;

[0021] Figure 2 is a position relationship diagram of the battery compartment and the power management device from one angle in some embodiments of the present application;

[0022] Figure 3 is a position relationship diagram of the battery compartment and the power management device from another angle in some embodiments of the present application;

[0023] Figure 4 is a perspective structural schematic diagram of the power management device from one angle in some embodiments of the present application;

[0024] Figure 5 is a perspective structural schematic diagram of the power management device from another angle in some embodiments of the present application;

[0025] Figure 6 is an exploded view of part of the power management device in some embodiments of the present application;

[0026] Figure 7 is a structural schematic diagram of the connection of the battery compartment with the first circuit board and the second circuit board, respectively, in some embodiments of the present application;

[0027] Figure 8 is a structural schematic view of an angle of the housing main body of the outdoor working vehicle in some embodiments of the present application;

[0028] Figure 9 is another structural schematic view of the housing main body of the outdoor working vehicle in some embodiments of the present application;

[0029] Figure 10 is a structural schematic view of the first circuit board in some embodiments of the present application;

[0030] Figure 11 is a structural schematic view of the second circuit board in some embodiments of the present application;

[0031] Figure 12 is a top view structural schematic view of the first circuit board and the second circuit board in the stacking direction in some embodiments of the present application;

[0032] Figure 13 is a position schematic view of the first circuit board, the second circuit board and the first cover plate of the outdoor working vehicle in some embodiments of the present application;

[0033] Figure 14 is a logic block diagram of the power management device and the battery compartment, the battery pack, the controller, the power output assembly and the walking assembly of the outdoor working vehicle in some embodiments of the present application.

[0034] Meaning of reference signs in the drawings:

[0035] 1, vehicle frame; 2, power supply system; 21, battery compartment; 211, first side plate; 2111, first cooling fan; 2112, charging connector; 212, second side plate; 2112, second cooling fan; 213, external terminal; 214, reversing radar; 215, radar controller; 216, tail light;

[0036] 22, battery pack;

[0037] 23, power management device; 230, housing; 2301, first interface group; 23011, first battery pack connection interface; 23012, charging interface; 23013, first fan interface; 23014, expansion interface;

[0038] 2302, second interface group; 23021, second battery pack connection interface; 23022, power delivery interface; 23023, signal delivery interface; 23024, second fan interface;

[0039] 231, housing main body; 232, first accommodating cavity; 2321, first step surface; 23211, first through hole; 2322, second step surface; 23221, second through hole;

[0040] 233 second accommodating cavity; 2331 first wiring area; 2332 second wiring area;

[0041] 234 first cover plate; 2341 sealing accommodating groove; 2342 sealing strip; 235 second cover plate;

[0042] 24 first circuit board; 241 first mounting surface; 242 first connecting part;

[0043] 2421 first terminal group; 24211 first battery pack connecting terminal; 24212 charging terminal; 242121 charging positive terminal; 242122 charging negative terminal;

[0044] 2422 second terminal group; 24221 second battery pack connecting terminal; 24222 electric energy output terminal; 242221 output positive terminal; 242222 output negative terminal; 243 switch array; 2431 mos switch; 244 capacitor array; 2441 capacitor; 245 electrically conductive body; 2451 electrically conductive column;

[0045] 25 second circuit board; 251 second mounting surface; 252 second connecting part;

[0046] 2521 third terminal group; 25211 first battery pack signal terminal; 25212 first fan terminal; 25213 charging and discharging signal terminal;

[0047] 2522 fourth terminal group; 25221 second battery pack signal terminal; 25222 second fan terminal; 25223 signal transmission terminal;

[0048] 253 radar terminal; 254 radar step-down module; 255 tail light terminal; 2551 tail light step-down module; 256 switch terminal; 2561 fan step-down module; 257 processor; 258 hall ring; 259 overlapping area;

[0049] 26 bracket; 27 air flow channel; 28 monitoring switch; 3 operation assembly; 31 left operation lever; 32 right operation lever; 4 seat; 5 power output assembly; 6 walking assembly; 61 front walking wheel; 62 rear walking wheel. [DETAILED DESCRIPTION]

[0050] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings for the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0051] In the description of the present application, it should be noted that unless specifically defined and limited, the terms "mounting", "connection" and "linking" should be understood in a broad sense, for example, can be fixed connection or detachable connection; can be mechanical connection or electrical connection; can be direct connection or indirect connection through intermediate medium; can be internal connection of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0052] Please refer to Figure 1 The outdoor working vehicle shown is an embodiment of the present application, comprising a frame 1, an operation assembly 3, a seat 4, a power output assembly 5, a walking assembly 6 and a power supply system 2.

[0053] The frame 1 is arranged in a linear direction, and the operation assembly 3, the seat 4, the power output assembly 5, the walking assembly 6 and the power supply system 2 are arranged at different positions on the frame 1.

[0054] The operation assembly 3 comprises a left operation lever 31 arranged on the left side of the outdoor working vehicle and a right operation lever 32 arranged on the right side of the outdoor working vehicle, and the operator controls the outdoor working vehicle to move forward, backward or turn by controlling the left operation lever 31 and the right operation lever 32. The operation assembly 3 can also be a steering wheel capable of controlling the outdoor working vehicle.

[0055] In some embodiments, the operation assembly 3 is provided with a control button for adjusting the running speed of the power output assembly 5 and the walking assembly 6, so as to facilitate the operator to quickly and accurately control the running of the outdoor working vehicle. Further, the operation assembly 3 can also be provided with a button for adjusting the brightness of the vehicle lamp of the outdoor working vehicle, a button for adjusting the rotating speed of the cutter, etc.

[0056] In some embodiments, the front end of the frame 1 can also be provided with a vehicle-mounted air blower for blowing fallen leaves on the lawn, so as to reduce the disturbance to the operation of the outdoor working vehicle. Further, the operation assembly 3 is provided with a button for controlling the steering and blowing amount of the vehicle-mounted air blower, so that the operator can control the vehicle-mounted air blower on the vehicle during driving operation, without getting off the vehicle.

[0057] The seat 4 is arranged on the frame 1, and the left operating lever 31 and the right operating lever 32 are arranged close to the seat 4 and respectively on the left and right sides of the seat 4, so that an operator sitting on the seat 4 controls the left operating lever 31 and the right operating lever 32 to control the operation of the outdoor working vehicle.

[0058] The power output assembly 5 is a workpiece for realizing a tool function. In an embodiment, the outdoor working vehicle is a riding mower, and the power output assembly 5 is a cutting assembly arranged below the frame 1. The power output assembly 5 is used to output power to realize the mowing function of the riding mower.

[0059] In some embodiments, the cutting assembly includes a cutter head, a mowing element, and a cutting motor. The cutting motor is controlled by a control button on the operating assembly 3, and the mowing element is used to cut vegetation such as grass when rotating at a high speed. For example, the mowing element is a blade for cutting vegetation on a lawn. The cutter head is formed with a mowing space for accommodating the mowing element, and the mowing element is at least partially located in the mowing space.

[0060] The power output assembly 5 can also be detached from the outdoor working vehicle. It can be understood that the power output assembly 5 can be replaced by other assemblies to meet the use requirements of different garden operations. Therefore, the outdoor garden mower can not only cut vegetation, but also replace the cutting assembly with a snow shoveling, snow sweeping, snow blowing, or flushing function component. Those skilled in the art should be able to adaptively replace various function components without creative labor, and all of the above should be included in the protection scope of the present embodiment.

[0061] When the cutting assembly is replaced by a snow shoveling, snow sweeping, or snow blowing function component, the power supply system 2 of the outdoor working vehicle of the present application can also power the above-mentioned snow shoveling, snow sweeping, or snow blowing function component.

[0062] The walking assembly 6 includes walking wheels arranged on the frame 1 and walking motors for driving the walking wheels. The walking wheels are arranged on both sides of the frame 1, so that the center of gravity of the outdoor working vehicle is kept within the frame 1, thereby reducing the probability of the outdoor working vehicle rolling over when walking.

[0063] In an embodiment, the number of walking wheels is set to four, including two front walking wheels 61 and two rear walking wheels 62. The front walking wheels 61 can be universal wheels, and the walking motors are drivingly connected to the rear walking wheels 62 to drive the rear walking wheels 62 to rotate. The two rear walking wheels 62 are matched with the walking motors, and the rotation speeds of the two walking motors can be the same or different. When the operator drives the outdoor working vehicle straight, the rotation speeds of the two walking motors are substantially the same. When the operator drives the outdoor working vehicle to turn, the rotation speeds of the two walking motors are different, and the outdoor working vehicle turns to the side with the lower rotation speed of the walking motor. The diameter of the front walking wheel 61 is smaller than the diameter of the rear walking wheel 62.

[0064] The power supply system 2 is arranged at the rear of the vehicle frame 1, and includes a plurality of battery packs 22, a power management device 23 (power management module) configured to unify and control the charging and discharging processes of the plurality of battery packs 22, and a battery compartment 21 for mounting the plurality of battery packs 22. The plurality of battery packs 22 are electrically connected to external terminals 213 on the battery compartment 21 through terminals thereon to supply power to the outdoor working vehicle. The plurality of battery packs 22 include first-type battery packs 22 and second-type battery packs 22. Further, the battery compartment 21 can be configured to accommodate the first-type battery packs 22 and the second-type battery packs 22 of different capacities or sizes to increase the adaptability of the outdoor working vehicle to different types of battery packs 22. At least one of the battery packs 22 can be detached from the outdoor working vehicle to supply power to other handheld power tools or energy storage devices, increasing the versatility of the battery packs 22. In some embodiments, the first-type battery packs include ternary lithium battery packs, and the second-type battery packs include iron phosphate lithium battery packs.

[0065] Compared with conventional energy sources using fossil fuels, the outdoor working vehicle of the present application is more environmentally friendly and more in line with long-term development planning.

[0066] Please refer to Figure 2 , Figure 3 , Figure 6 , Figure 8 and Figure 9 In some embodiments, the power supply system 2 includes a battery compartment 21, battery packs 22, and a power management module. The battery packs 22 are assembled in the battery compartment 21. The power management module is arranged outside the battery compartment 21. The power management module includes a housing body 231 including a first accommodating cavity 232 and a second accommodating cavity 233 separated from each other. The first accommodating cavity 232 is configured to accommodate at least one circuit board. The circuit board is provided with a connection portion for connecting with external devices. The connection portion extends to the second accommodating cavity 233. The second accommodating cavity 233 is configured as a wiring area for electrically and / or signal connecting the connection portion in the second accommodating cavity 233 with external devices.

[0067] By separating the first accommodating cavity 232 for accommodating the circuit board and the second accommodating cavity 233 for wiring with the circuit board, the worker only needs to perform relevant wiring or unwiring operations in the second accommodating cavity 233 when wiring, without touching the circuit board, thereby protecting the circuit board and electrical elements thereon.

[0068] As Figures 6-11As shown in the drawings, in some embodiments, two circuit boards are arranged in the first accommodating cavity 232, one of which is a first circuit board 24 configured to supply power to the walking assembly 6 and / or the power output assembly 5, and the other is a second circuit board 25 configured to output communication information, the connecting portion on the first circuit board 24 is configured as a first connecting portion 242, and the connecting portion on the second circuit board 25 is configured as a second connecting portion 252; the first connecting portion 242 can extend from the first accommodating cavity 232 to the second accommodating cavity 233; the second connecting portion 252 can extend from the first accommodating cavity 232 to the second accommodating cavity 233. In this way, the first circuit board 24 and the second circuit board 25 are arranged in the first accommodating cavity 232, the first connecting portion 242 of the first circuit board 24 and the second connecting portion 252 of the second circuit board 25 extend to the second accommodating cavity 233, so that the first circuit board 24 and the second circuit board 25 can be electrically connected and / or signal connected with external devices through the respective connecting portions, while reducing the physical contact between the first circuit board 24 and the second circuit board 25 and the external devices, avoiding being bumped.

[0069] As shown in the drawings, Figure 8 and Figure 9 As shown in the drawings, in some embodiments, the shell body 231 is formed with a first step surface 2321 and a second step surface 2322 in the first accommodating cavity 232, the first step surface 2321 is provided with a first through hole 23211, and the second step surface 2322 is provided with a second through hole 23221. The first connecting portion 242 can extend from the first accommodating cavity 232 to the second accommodating cavity 233 through the first through hole 23211, and the second connecting portion 252 can extend from the first accommodating cavity 232 to the second accommodating cavity 233 through the second through hole 23221. The first through hole 23211 and the second through hole 23221 both communicate the first accommodating cavity 232 and the second accommodating cavity 233, the first connecting portion 242 passes through the first through hole 23211 and is partially located in the second accommodating cavity 233, and the second connecting portion 252 passes through the second through hole 23221 and is partially located in the second accommodating cavity 233, so that the first connecting portion 242 and the second connecting portion 252 extend to the second accommodating cavity 233 through different first step surfaces 2321 and second step surfaces 2322 respectively, which helps to make the wiring of the first connecting portion 242 and the second connecting portion 252 independent of each other, so that the wire harness connection is regular.

[0070] In some embodiments, the first through hole 23211 and the second through hole 23221 are located above the second accommodating cavity 233. So that the liquid or water droplets in the second accommodating cavity 233 cannot flow into the first accommodating cavity 232, which can avoid contaminating the first circuit board, the second circuit board or other components in the first accommodating cavity 232.

[0071] As shown in the drawings, Figure 9As shown, in some embodiments, one end of the first through hole 23211 is located in the first connection area 2331 and the other end is located in the first step surface 2321. One end of the second through hole 23221 is located in the second connection area 2332 and the other end is located in the second step surface 2322.

[0072] like Figures 8-11 As shown, in some embodiments, the first stepped surface 2321 and the second stepped surface 2322 have different heights, and the first circuit board 24 and the second circuit board 25 are arranged in layers, one above the other. Specifically, the first stepped surface 2321 is higher than the second stepped surface 2322, and the height of the first circuit board 24 is similar to and slightly higher than the first stepped surface 2321, while the height of the second circuit board 25 is similar to and slightly higher than the second stepped surface 2322. The portion of the first circuit board 24 with the first connecting portion 242 is arranged corresponding to the first stepped surface 2321, and the portion of the second circuit board 25 with the second connecting portion 252 is arranged corresponding to the second stepped surface 2322. By independently arranging the first and second circuit boards 24 and 25 in layers, and arranging the first and second stepped surfaces 2321, 2322 to match their respective heights, the overall structure of the power management device 23 is compact, and the first and second connecting portions 242, 252 are designed in layers without interfering with each other.

[0073] like Figure 9 As shown, in some embodiments, the second accommodating cavity 233 includes at least a wiring area, which includes a first wiring area 2331 and a second wiring area 2332 of different heights. The first connector 242 can enter the first wiring area 2331 via the first step surface 2321 through the first through-hole 23211, and the second connector 252 can enter the second wiring area 2332 via the second step surface 2322 through the second through-hole 23221. The wiring area is divided into first and second wiring areas 2331 and 2332 of different heights. The first connector 242 is connected to an external device in the first wiring area 2331, and the second connector 252 is connected to an external device in the second wiring area 2332. In this way, the wiring harnesses connected to the first and second connectors 242 and 252 are arranged in layers within the second accommodating cavity 233, reducing interference between the first and second circuit boards 24 and 25 when connecting to external wiring harnesses.

[0074] like Figure 8 and Figure 9 As shown, in some embodiments, on an outdoor work vehicle, the height of the first circuit board 24 is higher than the height of the second circuit board 25 , and the height of the first wiring area 2331 is higher than the height of the second wiring area 2332 .

[0075] As Figures 8-11 shown in FIG. 18, in some embodiments, two second accommodating cavities 233 are provided, and the two second accommodating cavities 233 are respectively arranged at two sides of the first accommodating cavity 232. Specifically, the first wiring area 2331 of each second accommodating cavity 233 is arranged at one side of the first accommodating cavity 232, and the first wiring area 2331 is two in total. Correspondingly, two first step faces 2321 are arranged in the first accommodating cavity 232, each first step face 2321 corresponds to one first wiring area 2331, and each first step face 2321 is provided with a first through hole 23211 to communicate the first wiring area 2331. The second wiring area 2332 of each second accommodating cavity 233 is arranged at one side of the first accommodating cavity 232, and the second wiring area 2332 is two in total. Correspondingly, two second step faces 2322 are arranged in the first accommodating cavity 232, each second step face 2322 corresponds to one second wiring area 2332, and each second step face 2322 is provided with a second through hole 23221 to communicate the second wiring area 2332. The first circuit board 24 can be electrically and / or signal connected with external devices through the two first wiring areas 2331, and the second circuit board 25 can be electrically and / or signal connected with external devices through the two second wiring areas 2332.

[0076] As Figures 4-6 and Figure 10 and Figure 11 , in some embodiments, the opening of the first accommodating cavity 232 is provided with a first cover plate 234, and the opening of the second accommodating cavity 233 is provided with a second cover plate 235. After the circuit board is installed in the first accommodating cavity 232, the circuit board can be sealed in the first accommodating cavity 232 through the first cover plate 234 to protect the first circuit board 24 and the second circuit board 25.

[0077] As Figure 4 and Figure 5 shown, when the external devices are connected with the first connecting part 242 and the second connecting part 252 through the wire harness, the second cover plate 235 is used to store the first connecting part 242, the second connecting part 252 and part of the wire harness in the second accommodating cavity 233 in the second accommodating cavity 233. The first housing body 231 is provided with a first notch, and the second cover plate 235 is provided with a second notch. When the second cover plate 235 is covered with the first housing body 231, the first notch and the second notch are combined to form a connecting interface so that the wire harness can pass through.

[0078] As Figure 6As shown, in some embodiments, a first seal is arranged between the first cover plate 234 and the shell body 231, which can be a sealing strip 2342 or other sealing device. Specifically, the first cover plate 234 is provided with a sealing accommodation groove 2341 around the periphery, and the sealing strip 2342 is arranged in the sealing accommodation groove 2341 and partially exposed to the sealing accommodation groove 2341. When the first cover plate 234 is closed with the shell body 231, the shell body 231 presses the sealing strip 2342, and the sealing strip 2342 is locked and sealed with the shell body 231 by screws.

[0079] In some embodiments, a second seal is arranged between the second cover plate 235 and the shell body 231, which can be a sealing strip 2342 or other sealing device. Further, the second accommodation cavity 233 is provided with two, and correspondingly, the second cover plate 235 is provided with two, and the sealing strip 2342 arranged between the second cover plate 235 and the shell body 231 is also provided with two.

[0080] In some embodiments, the first accommodation cavity 232 can be provided with two, three or more, and the second accommodation cavity 233 can also be provided with one, three or more.

[0081] Please also refer to 2、 Figure 3 、 Figures 7-9 In some embodiments, the power supply system 2 includes a battery compartment 21, a battery pack 22 and a power management device 23. The battery compartment 21 has an opening; the battery pack 22 is configured to be detachably assembled in the battery compartment 21 along the opening; and the power management device 23 includes a shell body 231, the shell body 231 includes a first accommodation cavity 232 and a second accommodation cavity 233 separated from each other, the first accommodation cavity 232 is configured to accommodate at least one circuit board, the circuit board is provided with a connecting portion for connecting with an external device, the connecting portion extends to the second accommodation cavity 233, and the second accommodation cavity 233 is at least configured as a wiring area for electrical connection and / or signal connection between the connecting portion in the second accommodation cavity 233 and the external device; the connecting portion is arranged on the mounting surface of the circuit board, and the mounting surface has a different orientation from the opening direction of the battery compartment 21.

[0082] In some embodiments, the opening direction of the battery compartment 21 is upward, and the mounting surface of the circuit board is downward, so that when wiring or unwiring or maintenance of the circuit board in the power management device 23 is performed on the whole vehicle of the outdoor working vehicle, the battery compartment 21 is released from the vehicle frame 1, and the battery compartment 21 is flipped to drive the power management device 23 to flip synchronously, so that the power management device 23 can be flipped from the bottom of the battery compartment 21 to an angle and a position which are convenient for the worker to access, and then the wiring or unwiring of the connecting portion or the disassembly of the shell body 230 for the maintenance of the circuit board is facilitated.

[0083] In some embodiments, the extending direction of the connecting portion is different from the opening direction of the battery compartment 21. Further, the extending portion is arranged on the mounting surface of the circuit board and extends away from the mounting surface. The opening direction of the battery compartment 21 is upward, the mounting surface of the circuit board is downward, and the extending direction of the connecting portion is also downward.

[0084] Further, the mounting position of the power management device 23 can be arranged on the bottom of the battery compartment 21, or arranged on the side or top surface of the battery compartment 21. The mounting position can be selected according to actual use requirements.

[0085] The mounting surface of the circuit board can also be consistent with the opening direction of the battery compartment 21. In some embodiments, when the opening of the battery compartment 21 is upward, the mounting surface of the circuit board is also upward. In some embodiments, the opening of the battery compartment 21 is arranged in a horizontal direction, and the mounting surface of the circuit board is also arranged horizontally.

[0086] Please refer to FIG. 2, Figure 3 , Figures 7-9 In some embodiments, on the outdoor working vehicle, the opening direction of the battery compartment 21 is upward, and the opening direction of the second accommodating cavity 233 is opposite to the opening direction of the battery compartment 21, that is, the opening direction of the second accommodating cavity 233 is downward. In combination with the above embodiment, since the mounting surface of the circuit board is downward, the connecting portion of the mounting surface is also arranged downward, and since the connecting portion of the circuit board is located in the second accommodating cavity 233, the opening direction of the second accommodating cavity 233 is arranged to be downward. When maintaining, the battery compartment 21 is flipped to flip the battery management device together, so that the second accommodating cavity 233 is presented to the operator in a position and angle that is convenient to contact, so as to disassemble the wiring harness or disassemble the shell 230 of the power management device 23.

[0087] Please refer to FIG. 2, Figure 3 , Figures 7-9 In some embodiments, the power management device 23 is fixedly connected to the bottom of the battery compartment 21 and can move together with the battery compartment 21. When the battery compartment 21 is moved, the power management device 23 can also be moved. Further, in the case that the opening of the battery compartment 21 is upward and the second accommodating cavity 233 of the power management device 23 is downward, when the battery compartment 21 is moved and the opening of the battery compartment 21 is arranged in a horizontal direction or downward, the opening of the second accommodating cavity 233 of the power management device 23 will be correspondingly arranged in a horizontal direction or upward. This will facilitate the operation in the second accommodating cavity 233 and the wiring harness connection between the first terminal and the second terminal and the external device.

[0088] In some embodiments, when the opening direction of the battery compartment 21 is upward, the opening direction of the second accommodating cavity 233 of the power management device 23 can also be set horizontally or upward. Of course, the opening direction of the second accommodating cavity 233 can also be set tilted upward or tilted downward, or horizontally.

[0089] In some embodiments, the opening direction of the first accommodating cavity 232 is different from the opening direction of the battery compartment 21, that is, the opening direction of the first accommodating cavity 232 is also downward. In some embodiments, the opening direction of the first accommodating cavity 232 is the same as the opening direction of the battery compartment 21. Of course, the opening direction of the first accommodating cavity 232 can also be set upward, horizontally, or downward according to actual needs.

[0090] In some embodiments, the opening direction of the battery compartment 21 is upward, the opening direction of the first accommodating cavity 232 is upward, and the opening direction of the second accommodating cavity 233 is downward.

[0091] In some embodiments, the power management device 23 is mounted on an outdoor work vehicle, and the surface of the outdoor work vehicle that connects to the power management device 23 serves as the connection surface, with the opening of the second accommodating cavity 233 facing away from the connection surface. Furthermore, the power management device 23 can be mounted on the vehicle frame 1, the seat 4, or other feasible locations, with the surface of the outdoor work vehicle that connects to the power management device 23 serving as the connection surface, and the opening of the second accommodating cavity 233 facing away from the connection surface. This ensures that the connection surface does not interfere with assembly and disassembly of the wiring harness or assembly and disassembly of the housing 230 of the power management device 23 or assembly and disassembly of the wiring harness within the second accommodating cavity 233.

[0092] Please also refer to 2. Figure 3 、 Figures 6-10 and Figure 12In some embodiments, the power supply system 2 comprises a battery compartment 21, a battery pack 22 and a power management device 23. The battery pack 22 is assembled in the battery compartment 21. The power management device 23 is configured to at least control the charging and discharging of the battery pack 22. The power management device 23 comprises a housing body 231, which is configured as a first accommodating cavity 232 and a second accommodating cavity 233 separated from each other, the first accommodating cavity 232 is configured to accommodate a first circuit board 24 and a second circuit board 25, the first circuit board 24 is used to provide electrical energy for the walking assembly 6 and / or the power output assembly 5, and the second circuit board 25 is configured to be able to transmit communication signals. The first circuit board 24 is provided with a first connecting part 242, and the second circuit board 25 is provided with a second connecting part 252, both the first connecting part 242 and the second connecting part 252 can extend from the first accommodating cavity 232 to the second accommodating cavity 233, and the first connecting part 242 and the second connecting part 252 can be electrically connected and / or signal connected with external devices respectively.

[0093] In the first accommodating cavity 232, the housing body 231 forms a first stepped surface 2321 and a second stepped surface 2322 with different heights, the first stepped surface 2321 is provided with a first through hole 23211 which communicates the first accommodating cavity 232 and the second accommodating cavity 233, and the second stepped surface 2322 is provided with a second through hole 23221 which communicates the first accommodating cavity 232 and the second accommodating cavity 233; the first connecting part 242 can enter the second accommodating cavity 233 through the first through hole 23211, and the second connecting part 252 can enter the second accommodating cavity 233 through the second through hole 23221. In this way, the terminals on the two circuit boards in one chamber are led out to another chamber through stepped surfaces with different heights, so that when wiring with the two circuit boards respectively, the wire harness on the first circuit board 24 will not interfere with the wire harness on the second circuit board 25, so that the wire harness connection is regular and not messy, and when arranging the wire harness on a single circuit board, it will not be too crowded. Especially the situation of wiring between the wire harnesses on the circuit board with overcurrent is reduced, the occurrence of short circuit is reduced, and the occurrence of safety hazards is reduced.

[0094] Moreover, the first circuit board is configured to provide electrical energy for the walking assembly or the power output assembly, and the second circuit board is configured to be able to transmit communication signals, which reduces the influence of the magnetic field generated by the first circuit board with overcurrent on the transmission of communication signals on the second circuit board.

[0095] Further, the height of the first step surface 2321 is higher than the height of the second step surface 2322, and the height of the first circuit board 24 is close to the height of the first step surface 2321 and slightly higher than the first step surface 2321, and the height of the second circuit board 25 is close to the height of the second step surface 2322 and slightly higher than the second step surface 2322. The part of the first circuit board 24 with the plurality of first terminals is arranged corresponding to the first step surface 2321, and the part of the second circuit board 25 with the plurality of second terminals is arranged corresponding to the second step surface 2322. The first circuit board 24 and the second circuit board 25 are arranged in layers independently, and the first step surface 2321 and the second step surface 2322 corresponding to the height of the first circuit board 24 and the second circuit board 25 are arranged according to the height of the first circuit board 24 and the second circuit board 25, so that the structure layout of the entire power management device 23 can be more compact, and the length of the first terminals and the second terminals can be reduced.

[0096] As shown in Figure 9 , in some embodiments, the wiring area of the second accommodating cavity 233 includes a first wiring area 2331 and a second wiring area 2332, and the height of the first wiring area 2331 is higher than the height of the second wiring area 2332. The two wiring areas are divided into different heights, which facilitates the connection of the wire harness and reduces the occurrence of short circuit caused by wire harness lapping.

[0097] Please also refer to Figure 2 , Figure 3 , Figure 6 and Figure 12 , in some embodiments, the power supply system 2 of the outdoor working vehicle of the present application further includes a battery compartment 21, a battery pack 22 and a power management device 23. The battery pack 22 is assembled in the battery compartment 21. The power management device 23 includes a housing 230 and a circuit board assembly in the housing 230, and the circuit board assembly includes at least two circuit boards arranged in layers, and each of the two circuit boards arranged in layers is provided with a connecting part. In the stacking direction, the projection area of the two circuit boards has an overlapping area 259, and the connecting part on at least one of the circuit boards is at least partially located outside the overlapping area 259. Since the two circuit boards are arranged in layers, the connecting part of the circuit board is at least partially located outside the overlapping area 259 of the two circuit boards, which helps to reduce the interference of the circuit board caused by the space limitation of the circuit board when the external wire harness is connected to the circuit board, and improves the wiring efficiency.

[0098] In some embodiments, in the stacking direction, the projection area of one of the two circuit boards is larger than the projection area of the other circuit board, and the connecting part on the larger circuit board is located outside the overlapping area 259.

[0099] Please also refer to Figure 1 , Figure 2 ,Figure 3 、 Figure 6 and Figures 10-12 In some embodiments, one of the two circuit boards is a first circuit board 24 configured to supply power to the walking assembly 6 and / or the power output assembly 5, and the other is a second circuit board 25 configured to output communication information. The connection portion on the first circuit board 24 is a first connection portion 242 configured to connect to external devices, and the connection portion on the second circuit board 25 is a second connection portion 252 configured to connect to external devices. In the stacking direction, the orthographic projection of the first circuit board 24 and the orthographic projection of the second circuit board 25 have an overlapping area 259, and the first connection portion 242 on the first circuit board 24 is at least partially located outside the overlapping area 259.

[0100] As Figure 12 In some embodiments, in the stacking direction, the orthographic projection area of the first circuit board 24 is larger than the orthographic projection area of the second circuit board 25, and the first connection portion 242 on the first circuit board 24 is at least partially located outside the overlapping area 259, or the first connection portion 242 on the first circuit board 24 can be entirely located outside the overlapping area 259.

[0101] Please also refer to Figures 10-12 In some embodiments, one of the two circuit boards is a first circuit board 24 configured to supply power to the walking assembly 6 and / or the power output assembly 5, and the other is a second circuit board 25 configured to output communication information. The first circuit board 24 is provided with a first mounting surface 241 for mounting the first connection portion 242, and the second circuit board 25 is provided with a second mounting surface 251 for mounting the second connection portion 252, and the first mounting surface 241 and the second mounting surface 251 have the same orientation. When the first circuit board 24 and the second circuit board 25 are stacked and mounted, and the first mounting surface 241 and the second mounting surface 251 have the same orientation, the first mounting surface 241 will face the non-mounting surface of the second circuit board 25, which will cause the first connection portion 242 on the first mounting surface 241 to be disturbed by the second circuit board 25 when connected to external devices. Therefore, the first connection portion 242 on the first mounting surface 241 is arranged outside the overlapping area 259, and the first connection portion 242 can reduce the disturbance from the second circuit board 25 when connected.

[0102] Please also refer to Figures 10-12In some embodiments, the first connecting portion 242 is provided on the first mounting surface 241 of the first circuit board 24, and the first connecting portion 242 includes a first terminal group 2421 and a second terminal group 2422 located in different regions. In the stacking direction, the orthographic projection of the first circuit board 24 and the orthographic projection of the second circuit board 25 have an overlapping region 259, and the first terminal group 2421 and the second terminal group 2422 are located on both sides of the overlapping region 259. Especially in the case where the first mounting surface 241 and the second mounting surface 251 face the same direction, the above arrangement enables the first terminal group 2421 and the second terminal group 2422 on the first circuit board 24 to avoid interference from the second circuit board 25 and to be connected to external devices, respectively.

[0103] Please refer to Figure 2 、 Figure 3 、 Figures 10-12 , further, in combination with the foregoing embodiments, the battery compartment 21 includes a first side plate 211 and a second side plate 212 arranged opposite to each other, and the first side plate 211 and the second side plate 212 are both provided with external terminals 213; the battery pack 22 is located between the first side plate 211 and the second side plate 212, and the terminal at one end of the battery pack 22 is connected to the external terminal 213 on the first side plate 211, and the terminal at the other end of the battery pack 22 is connected to the external terminal 213. In some embodiments, part of the terminals in the first terminal group 2421 of the second circuit board 25 will be connected to the external terminals 213 on the first side plate 211, and part of the terminals in the second terminal group 2422 of the second circuit board 25 will be connected to the external terminals 213 on the second side plate 212.

[0104] As shown in Figure 7 , in some embodiments, in the horizontal direction, the first terminal group 2421 is arranged close to the first side plate 211, and the second terminal group 2422 is arranged close to the second side plate 212.

[0105] As shown in Figure 7 and Figure 12 , in some embodiments, the first terminal group 2421 and the second terminal group 2422 on the first circuit board 24 are located on both sides of the second circuit board 25 and arranged in front of and behind the advancing direction of the outdoor working vehicle. The third terminal group 2521 and the fourth terminal group 2522 on the second circuit board 25 are arranged in front of and behind the advancing direction of the outdoor working vehicle.

[0106] As shown in Figure 10As shown, in some embodiments, the first connecting portion 242 is arranged on the first mounting surface 241 of the first circuit board 24, the first connecting portion 242 includes a first terminal group 2421 and a second terminal group 2422 located in different regions, and the first terminal group 2421 and the second terminal group 2422 are located on the same side of the overlapping region 259. Further, the battery compartment 21 includes a first side plate 211 and a second side plate 212 arranged oppositely, and the battery pack 22 is located between the first side plate 211 and the second side plate 212. In the horizontal row direction, the first terminal group 2421 and the second terminal group 2422 can be arranged close to the first side plate 211, or can be arranged close to the second side plate 212.

[0107] In some embodiments, the battery compartment 21 includes a first side plate 211 and a second side plate 212 arranged oppositely, and the battery pack 22 is located between the first side plate 211 and the second side plate 212. In the horizontal row direction, the third terminal group 2521 and the fourth terminal group 2522 on the second circuit board 25 can be arranged close to the first side plate 211, or can be arranged close to the second side plate 212.

[0108] In some embodiments, the power supply system 2 of the outdoor working vehicle of the present application includes a battery pack 22, a battery compartment 21, and a power management device 23. In order to reduce the situation that the large-capacity battery pack 22 causes the output terminal to overheat during the charging and discharging process due to the arrangement of a single output terminal, two output terminals are arranged on the battery pack 22, and each end of the battery pack 22 is arranged with an output terminal. Each output terminal is configured as a terminal for outputting electric energy or charging the battery pack 22.

[0109] As shown in Figure 2 , Figure 3 and Figure 7 , and in order to cooperate with the electrical conduction of the two terminals of the battery pack 22, the battery compartment 21 of the present application includes a first side plate 211 and a second side plate 212 arranged oppositely, and the first side plate 211 and the second side plate 212 are both arranged with an external terminal 213. The battery pack 22 is located between the first side plate 211 and the second side plate 212, the terminal at one end of the battery pack 22 is connected with the external terminal 213 on the first side plate 211, and the terminal at the other end of the battery pack 22 is connected with the external terminal 213. The power management device 23 includes a housing 230 and at least one circuit board located in the housing 230, and the circuit board is arranged with a connecting portion; in the horizontal direction, part of the connecting portion is arranged close to the first side plate 211, and the other part is arranged close to the second side plate 212. It is convenient for part of the connecting portion of the power management device 23 to be electrically connected to the respective external terminals 213 in proximity, thereby facilitating the control of the power management device 23 on the charging and discharging of the battery pack 22.

[0110] Please also refer to Figure 1 , Figure 6 , Figure 7 ,Figure 10 、 Figure 11 and Figure 12 In some embodiments, two circuit boards are arranged in the housing 230, one of which is at least a first circuit board 24 configured to supply power to the walking assembly 6 and / or the power output assembly 5, and the other is at least a second circuit board 25 configured to output communication information. The connection part is configured as a first connection part 242 on the first circuit board 24, which includes a first terminal group 2421 arranged near the first side plate 211 and a second terminal group 2422 arranged near the second side plate 212 in the horizontal direction. The connection part is configured as a second connection part 252 on the second circuit board 25, which includes a third terminal group 2521 arranged near the first side plate 211 and a fourth terminal group 2522 arranged near the second side plate 212 in the horizontal direction. The first connection part 242 is divided into the first terminal group 2421 arranged near the first side plate 211 and the second terminal group 2422 arranged near the second side plate 212, so that the first circuit board 24 connects part of the terminals in the first terminal group 2421 to the external terminals 213 on the first side plate 211 through the wire harness in proximity, and connects part of the terminals in the second terminal group 2422 to the external terminals 213 on the second side plate 212 through the wire harness in proximity. At the same time, the second circuit board 25 connects part of the terminals in the third terminal group 2521 to the external terminals 213 on the first side plate 211 through the wire harness in proximity, and connects part of the terminals in the fourth terminal group 2522 to the external terminals 213 on the second side plate 212 through the wire harness in proximity. While saving wire harness, the wire harness layout is more reasonable.

[0111] It should be understood that in some embodiments, the first circuit board 24 of the present application is configured to receive external power to charge the battery pack 22, or receive the power of the battery pack 22 and supply power to one of the power output assembly 5 and the walking assembly 6 or simultaneously supply power to the power output assembly 5 and the walking assembly 6. While the second circuit board 25 is configured to mainly receive and send some information to control the first circuit board 24 to receive external power to charge the battery pack 22 or control the battery pack 22 to discharge externally.

[0112] Please also refer to Figures 2-5 、 Figure 7 and Figure 12In some embodiments, a first interface group 2301 connecting the inside and outside of the shell 230 is arranged on the shell 230 close to the first side plate 211 in the horizontal direction, and a second interface group 2302 connecting the inside and outside of the shell 230 is arranged on the shell 230 close to the second side plate 212. The first terminal group 2421 and the third terminal group 2521 are connected with external devices through the first interface group 2301, and the second terminal group 2422 and the fourth terminal group 2522 are connected with external devices through the second interface group 2302.

[0113] Please refer to Figures 2-4 、 Figures 10-12 In some embodiments, the first interface group 2301 includes a first battery pack connection interface 23011. Part of the terminals in the first terminal group 2421 are configured as first battery pack power terminals 24211, and the external terminals 213 on the first side plate 211 connected with the battery pack 22 are electrically connected with the first battery pack power terminals 24211 through the first battery pack connection interface 23011. Part of the terminals in the third terminal group 2521 are configured as first battery pack signal terminals 25211, and the external terminals 213 on the first side plate 211 connected with the battery pack 22 are electrically and signal connected with the first battery pack signal terminals 25211 through the first battery pack connection interface 23011. The external terminals 213 arranged close to the first side plate 211 on the battery pack 22 are electrically connected with the first circuit board 24, and signal connected with the second circuit board 25.

[0114] Please refer to Figures 2-4 、 Figures 10-12 In some embodiments, the second interface group 2302 includes a second battery pack connection interface 23021, and part of the terminals of the second terminal group 2422 are configured as second battery pack power terminals 24221, and the external terminals 213 on the second side plate 212 connected with the battery pack 22 are electrically connected with the second battery pack power terminals 24221 through the second battery pack connection interface 23021. Part of the fourth terminal group 2522 is configured as second battery pack signal terminals 25221, and the external terminals 213 on the second side plate 212 connected with the battery pack 22 are electrically and signal connected with the second battery pack signal terminals 25221 through the second battery pack connection interface 23021. The external terminals 213 arranged close to the second side plate 212 on the battery pack 22 are electrically connected with the first circuit board 24, and signal connected with the second circuit board 25.

[0115] As Figure 10 - to Figure 12In some embodiments, the first electrical element is configured on the first circuit board 24, and is located between the first terminal group 2421 and the second terminal group 2422. The first electrical element includes a switch array 243, which can be an array of a plurality of mos switches 2431, and a capacitor array 244, which can be an array of a plurality of capacitors 2441. The second electrical element is configured on the second circuit board 25, and is located between the third terminal group 2521 and the fourth terminal group 2522. The second electrical element includes a processor 257 and other processing modules.

[0116] Please also refer to Figures 1-4 , Figures 10-12 In some embodiments, the first side plate 211 is further provided with a charging connector 2112 for connecting with an external charging gun. The first interface group 2301 includes a charging interface 23012. Some of the terminals in the first terminal group 2421 are configured as charging terminals 24212 capable of being connected with the charging connector 2112. The charging connector 2112 can be connected with the charging terminals 24212 through the charging interface 23012 by a wire harness. The charging terminals 24212 are respectively electrically connected with the first battery pack electrical terminal 24211 and the second battery pack electrical terminal 24221 on the first circuit board 24. The third terminal group 2521 includes a charge-discharge signal terminal 25213 capable of being connected with the charging connector 2112. The charging connector 2112 can be connected with the charge-discharge signal terminal 25213 through the charging interface 23012 by a wire harness. The charging gun supplies power to the outdoor working vehicle through the charging connector 2112. The charging connector 2112 is connected with the charging terminals 24212, and the charging terminals 24212 are respectively electrically connected with the first battery pack electrical terminal 24211 and the second battery pack electrical terminal 24221 through the first circuit board 24, so as to supply power to the battery pack 22 and transmit the charging information of the battery pack 22 by the charge-discharge signal terminal 25213.

[0117] Please also refer to Figures 2-4 , Figures 10-14In some embodiments, the outdoor working vehicle further comprises a controller for controlling the operation of the traveling assembly 6 and the power output assembly 5. The second interface set 2302 comprises an electric energy transmission interface 23022. The second terminal set 2422 comprises electric energy output terminals 24222 capable of outputting electric energy, and the electric energy output terminals 24222 are capable of being connected to the controller through a wire harness passing through the electric energy transmission interface 23022. The second interface set 2302 further comprises a signal transmission interface 23023, and the fourth terminal set 2522 is configured as signal transmission terminals 25223 capable of being connected to the controller in signal, and the signal transmission terminals 25223 are capable of being connected to the controller in electrical signal through a wire harness passing through the signal transmission interface 23023. The battery pack 22 transmits electric energy to the power output assembly 5 and / or the traveling assembly 6 on the outdoor working vehicle through the electric energy output terminals 24222 on the first circuit board 24, and monitors the electric energy transmission of the electric energy output terminals 24222 in real time through the signal transmission terminals 25223, so that the second circuit board 25 controls the battery pack 22 to supply power to the traveling assembly 6 and / or the power output assembly 5.

[0118] Please refer to Figures 2-4 、 Figures 10-14 In some embodiments, the charging terminals 24212 comprise a charging positive terminal 242121 and a charging negative terminal 242122, the electric energy output terminals 24222 comprise an output positive terminal 242221 and an output negative terminal 242222, and a conductive body 245 is connected between the charging negative terminal 242122 and the output negative terminal 242222. The second circuit board 25 is provided with a current sensor for detecting electric current, and further, the current sensor comprises a Hall ring 258 provided with an inner hole, and the conductive body 245 at least partially extends into the inner hole of the Hall ring 258. Specifically, the conductive body 245 is further provided with a conductive column 2451 extending into the inner hole of the Hall ring 258. The Hall ring 258 can monitor the size of the electric current flowing through the conductive body 245, so as to transmit the size of the electric current to the second circuit board 25 and the controller, so as to interact with the battery pack 22 according to the size of the electric current monitored by the Hall ring 258.

[0119] Please refer to Figures 2-4 、 Figures 10-14In some embodiments, the first side plate 211 is provided with a first heat dissipation fan 2111 capable of dissipating heat for the battery pack 22, and the second side plate 212 is provided with a second heat dissipation fan 2112 capable of dissipating heat for the battery pack 22. Some interfaces in the first interface group 2301 further include a first fan interface 23013 configured to be connected with the first heat dissipation fan 2111, and the third terminal group 2521 includes a first fan terminal 25212 configured to be electrically connected with the first heat dissipation fan 2111. The second interface group 2302 further includes a second fan interface 23024 configured to be connected with the second heat dissipation fan 2112, and the fourth terminal group 2522 includes a second fan terminal 25222 configured to be electrically connected with the second heat dissipation fan 2112. In some embodiments, a plurality of first heat dissipation fans 2111 are provided on the first side plate 211, and a plurality of second heat dissipation fans 2112 are provided on the first side plate 211.

[0120] Please also refer to Figures 2-4 、 Figures 10-14 In the present application, the first heat dissipation fan 2111 and the second heat dissipation fan 2112 are controlled by the second circuit board 25 to dissipate heat for the battery pack 22. Specifically, the second circuit board 25 can control the rotation speed and forward / reverse rotation of the first heat dissipation fan 2111 and the second heat dissipation fan 2112, so as to execute corresponding instructions according to the required heat dissipation condition of the battery pack 22. For example, when the heat generated by the battery pack 22 is not high, only part of the plurality of first heat dissipation fans 2111 and the plurality of second heat dissipation fans 2112 are used to dissipate heat for the battery pack 22; when the heat generated by the battery pack 22 is relatively high, all the plurality of first heat dissipation fans 2111 and the plurality of second heat dissipation fans 2112 are started to dissipate heat for the battery pack 22.

[0121] Further, the plurality of first heat dissipation fans 2111 and the plurality of second heat dissipation fans 2112 in the present application can simultaneously blow air to the battery pack 22, or simultaneously exhaust air to the outside to extract the heat in the battery pack 22 to cool the battery pack 22, or part of the plurality of first heat dissipation fans 2111 and the plurality of second heat dissipation fans 2112 rotate forward and part of them rotate reversely.

[0122] In some embodiments, the second circuit board 25 is further provided with a fan voltage reduction module 2561, the second circuit board 25 is electrically connected with the first circuit board 24, obtains the electric energy of the battery pack 22 through the first circuit board 24, and converts the high voltage of the battery pack 22 into low voltage required for the operation of the first heat dissipation fan 2111 and the second heat dissipation fan 2112 through the fan voltage reduction module 2561.

[0123] It should be understood that the first circuit board 24 in the present application can not only provide power for the power output assembly 5 and / or the walking assembly 6, but also provide power for the second circuit board 25. The second circuit board 25 can output communication information to the first circuit board 24 to control the external power supply operation of the first circuit board 24.

[0124] Please also refer to Figures 2-4 、 Figures 10-14 In some embodiments, the battery compartment 21 is connected with a reversing radar 214 and a radar controller 215 electrically connected with the reversing radar 214, the shell 230 is further provided with an expansion interface 23014, the second circuit board 25 is further provided with a radar terminal 253, the radar terminal 253 can be connected with the radar controller 215 through the expansion interface 23014 and a wire harness, and the radar controller 215 is connected with the radar through the wire harness. The second circuit board 25 is further provided with a radar voltage reduction module 254, the second circuit board 25 is electrically connected with the first circuit board 24, obtains the power of the battery pack 22 through the first circuit board 24, converts the high voltage of the battery pack 22 into low voltage required for the operation of the radar controller 215 and the radar through the radar voltage reduction module 254, the radar controller 215 obtains the information transmitted by the radar, processes the information and transmits the information to the first circuit board 24. Specifically, the reversing radar 214 is used for obstacle detection during vehicle driving or reversing to avoid collision. The reversing radar is electrically connected and communicatively connected with the second circuit board, and the second circuit board is further configured to give a warning prompt when it is determined that there is an obstacle within a certain distance range according to the detection result of the reversing radar.

[0125] Please also refer to Figures 2-4 、 Figures 10-14 In some embodiments, the battery compartment 21 is connected with a reversing radar 214 and a radar controller 215 electrically connected with the reversing radar 214, the shell 230 is further provided with an expansion interface 23014, the second circuit board 25 is further provided with a radar terminal 253, the radar terminal 253 can be connected with the radar controller 215 through the expansion interface 23014 and a wire harness, and the radar controller 215 is connected with the radar through the wire harness. The second circuit board 25 is further provided with a radar voltage reduction module 254, the second circuit board 25 is electrically connected with the first circuit board 24, obtains the power of the battery pack 22 through the first circuit board 24, converts the high voltage of the battery pack 22 into low voltage required for the operation of the radar controller 215 and the radar through the radar voltage reduction module 254, the radar controller 215 obtains the information transmitted by the radar, processes the information and transmits the information to the first circuit board 24. Specifically, the reversing radar 214 is used for obstacle detection during vehicle driving or reversing to avoid collision. The reversing radar is electrically connected and communicatively connected with the second circuit board, and the second circuit board is further configured to give a warning prompt when it is determined that there is an obstacle within a certain distance range according to the detection result of the reversing radar.

[0126] Please also refer to Figures 1-4 、 Figures 10-14In some embodiments, the opening of the battery compartment 21 is provided with a compartment cover, and the compartment cover is provided with a monitoring switch 28 capable of monitoring the opening and closing state of the compartment cover. The shell 230 is provided with an expansion interface 23014. The circuit board is at least a second circuit board 25 capable of outputting communication information, and the second circuit board 25 is provided with a switch terminal 256. The monitoring switch 28 can be connected to the switch terminal 256 through the wire harness passing through the expansion interface 23014. When the outdoor working vehicle is charging, since the charging mode is mostly high-voltage charging, when the operator opens the compartment cover, the monitoring switch 28 on the compartment cover monitors that the compartment cover is in the open state, and transmits the information that the compartment cover is in the open state to the second circuit board 25 in the power management device 23. The second circuit board 25 will control the current and voltage of the charging to prevent harm to the operator.

[0127] The layered arrangement of the first circuit board 24 and the second circuit board 25 in the present application also makes it possible to install more interfaces for external wiring on the first circuit board 24 and the second circuit board 25 in a limited space, so that some functional modules can be added on the first circuit board 24 and the second circuit board 25 according to the needs, and the information interaction or power transmission to the outside can be realized through the increased interfaces, thereby enriching the functionality of the power management device 23. As described above, the tail light step-down module, the radar step-down module, the cooling fan step-down module, etc. are arranged on the second circuit board 25.

[0128] In some embodiments, in the horizontal direction, the power management device 23 is arranged between the first side plate 211 and the second side plate 212, so that the power management device 23 can be more evenly electrically connected and signal connected with the external terminals 213, the first cooling fan 2111, and the second cooling fan 2112 on the first side plate 211 and the second side plate 212 in the horizontal direction.

[0129] Please also refer to Figures 2-4 , Figures 10-14In some embodiments, the power supply system 2 of the outdoor working vehicle of the present application is at least configured to supply power to the outdoor working vehicle, the power supply system 2 comprises a battery compartment 21, a battery pack 22 and a power management device 23, the battery pack 22 is assembled in the battery compartment 21, the battery pack 22 is capable of discharging to the outdoor working equipment and capable of charging itself by obtaining external electric energy; the power management device 23 is at least configured to control the charging and discharging of the battery pack 22, the power management device 23 comprises a shell 230 and at least one circuit board in the shell 230, the circuit board is provided with a charging terminal 24212 and an electric energy output terminal 24222 which are independently arranged. The charging terminal 24212 is configured to be capable of obtaining the electric energy transmitted by the charging connector 2112 and capable of charging the battery pack 22, and the electric energy output terminal 24222 is configured to receive the power supply of the battery pack 22 and discharge to the controller. The present application independently arranges the terminals for obtaining external electric energy and the terminals for external output on the circuit board, so that the wire harness layout is dispersed, and a large number of wire harnesses are not concentrated, and the external lead is not convenient.

[0130] Please also refer to Figures 10-12 , Figure 13 In some embodiments, two circuit boards are arranged in the shell 230, one of which is configured as a first circuit board 24, and the other is configured as a second circuit board 25. The first circuit board 24 is at least configured to mount the charging terminal 24212 and the electric energy output terminal 24222. The second circuit board 25 is at least configured to control the operation of the first circuit board 24, and the first circuit board 24 has a charging state and a discharging state. In the charging state, the second circuit board 25 can control the first circuit board 24 to supply power to the battery pack 22 through the charging terminal 24212. In the discharging state, the second circuit board 25 can control the first circuit board 24 to supply power to the controller through the electric energy output terminal 24222. The first circuit board 24 is controlled by the second circuit board 25, and the second circuit board 25 charges the battery pack 22 through the charging terminal 24212 on the first circuit board 24, and the second circuit board 25 supplies power to the controller through the electric energy output terminal 24222 on the first circuit board 24.

[0131] As shown in Figures 10-14 In some embodiments, the first circuit board 24 and the second circuit board 25 are arranged in a stacked manner, and in the stacking direction, the projection surface of the first circuit board 24 and the projection surface of the second circuit board 25 have an overlapping area 259, and the charging terminal 24212 and the electric energy output terminal 24222 are located outside the overlapping area 259. Arranging the charging terminal 24212 and the electric energy output terminal 24222 outside the overlapping area 259 can reduce the interference of the second circuit board 25 when connecting the wire harnesses of the charging terminal 24212 and the electric energy output terminal 24222. Moreover, when connecting the wire harnesses, the operator directly performs quick plug-in and plug-out operations on the connecting parts extending into the second accommodating cavity, thereby improving the efficiency of assembly on the production line.

[0132] As shown in FIG. 1, in some embodiments, the first circuit board 24 and the second circuit board 25 are arranged in a stacked manner, and the electrically conductive body 245 is arranged across the second circuit board 25. In the case of a more compact arrangement of the first circuit board 24 and the second circuit board 25, the electrically conductive body 245 arranged across the second circuit board 25 can save space. Figures 10-14 As shown in FIG. 1, in some embodiments, the circuit board is provided with a switch array 243 and a capacitor array 244 that are electrically connected to each other, the switch array 243 is configured to control the on-off of the current flowing therethrough, and the capacitor array 244 is configured to store the charge flowing therethrough, and the capacitor array 244 is electrically connected to the charging terminal 24212 and the electric energy output terminal 24222, respectively. In the charging state, the electric energy transmitted by the charging connector 2112 can sequentially pass through the charging terminal 24212, the capacitor array 244, and the switch array 243 to charge the battery pack 22. In the discharging state, the electric energy of the battery pack 22 can sequentially pass through the switch array 243, the capacitor array 244, and the electric energy output terminal 24222 to discharge to the controller. Specifically, the circuit board is the first circuit board 24.

[0133] Figures 1-3 As shown in FIG. 1, in some embodiments, the circuit board is provided with a switch array 243 and a capacitor array 244 that are electrically connected to each other, the switch array 243 is configured to control the on-off of the current flowing therethrough, and the capacitor array 244 is configured to store the charge flowing therethrough, and the capacitor array 244 is electrically connected to the charging terminal 24212 and the electric energy output terminal 24222, respectively. In the charging state, the electric energy transmitted by the charging connector 2112 can sequentially pass through the charging terminal 24212, the capacitor array 244, and the switch array 243 to charge the battery pack 22. In the discharging state, the electric energy of the battery pack 22 can sequentially pass through the switch array 243, the capacitor array 244, and the electric energy output terminal 24222 to discharge to the controller. Specifically, the circuit board is the first circuit board 24.

[0134] As shown in FIG. 1, in some embodiments, the circuit board is provided with a switch array 243 and a capacitor array 244 that are electrically connected to each other, the switch array 243 is configured to control the on-off of the current flowing therethrough, and the capacitor array 244 is configured to store the charge flowing therethrough, and the capacitor array 244 is electrically connected to the charging terminal 24212 and the electric energy output terminal 24222, respectively. In the charging state, the electric energy transmitted by the charging connector 2112 can sequentially pass through the charging terminal 24212, the capacitor array 244, and the switch array 243 to charge the battery pack 22. In the discharging state, the electric energy of the battery pack 22 can sequentially pass through the switch array 243, the capacitor array 244, and the electric energy output terminal 24222 to discharge to the controller. Specifically, the circuit board is the first circuit board 24. Figure 8 As shown in FIG. 1, in some embodiments, the circuit board is provided with a switch array 243 and a capacitor array 244 that are electrically connected to each other, the switch array 243 is configured to control the on-off of the current flowing therethrough, and the capacitor array 244 is configured to store the charge flowing therethrough, and the capacitor array 244 is electrically connected to the charging terminal 24212 and the electric energy output terminal 24222, respectively. In the charging state, the electric energy transmitted by the charging connector 2112 can sequentially pass through the charging terminal 24212, the capacitor array 244, and the switch array 243 to charge the battery pack 22. In the discharging state, the electric energy of the battery pack 22 can sequentially pass through the switch array 243, the capacitor array 244, and the electric energy output terminal 24222 to discharge to the controller. Specifically, the circuit board is the first circuit board 24.

[0135] Please also refer to Figures 10-12 ​In some embodiments, the outdoor working vehicle of the present application comprises a battery compartment 21, a battery pack 22 and a power management device 23. The battery compartment 21 has an opening. The battery pack 22 is configured to be assembled in the battery compartment 21 along the opening, and the battery pack 22 can power the outdoor working vehicle. The power management device 23 is configured to at least control the charging and discharging of the battery pack 22, and an air flow channel 27 is formed between the power management device 23 and the battery compartment 21. The power management device 23 comprises a housing 230 having a cavity and at least one circuit board located in the cavity, and the part of the housing 230 in contact with the air flow channel 27 is a heat dissipation part, and the circuit board is at least partially arranged in contact with the heat dissipation part. In this way, the heat generated by the power management device 23 during operation can be exchanged with external air to achieve the purpose of dissipating heat from the power management device 23.

[0136] Referring to Figure 7 In some embodiments, the cavity of the housing 230 can be the first accommodating cavity 232 in the foregoing embodiments.

[0137] As Figures 10-12 In some embodiments, two circuit boards are arranged in the cavity, one of which is at least a first circuit board 24 capable of delivering high-power current, and the other is at least a second circuit board 25 capable of outputting communication information, and the first circuit board 24 is arranged in contact with the heat dissipation part. The first circuit board 24 capable of delivering high-power current in the present application is equivalent to the first circuit board 24 capable of powering the walking assembly 6 and / or the power output assembly 5 in the foregoing embodiments. As described above, the first circuit board 24 is provided with a mos switch 2431 and a capacitor 2441, so it will generate more heat. Arranging the first circuit board 24 close to the first housing 230 is conducive to heat dissipation of the circuit board.

[0138] As Figure 2 and Figure 3 In some embodiments, on the outdoor working vehicle, the circuit board assembly comprises a first circuit board 24 and a second circuit board 25 arranged in layers one above the other, and the first circuit board 24 is arranged in contact with the heat dissipation part. Specifically, the first circuit board 24 is capable of delivering high-power current, and the second circuit board 25 is capable of delivering control instructions to control the operation of the first circuit board 24. Since the first circuit board 24 generates more heat, one of the purposes of independently designing the first circuit board 24 and the second circuit board 25 is that the high heat generated by the first circuit board 24 will not affect the operation of the second circuit board 25, but will be exchanged with the outside through the heat dissipation part.

[0139] As Figure 6 and Figure 2In some embodiments, the power management device 23 is connected to the bottom of the battery compartment 21 through the bracket 26, and the airflow channel 27 is formed between the bottom of the battery compartment 21 and the power management device 23. During the travel of the outdoor working vehicle, the airflow passes through the bottom of the battery compartment 21 and can take away the heat generated by the power management device 23. Moreover, the air is in a compressed state in the airflow channel 27, and once discharged from the airflow channel 27, the compressed air will instantaneously expand and absorb heat, which can further cool the heat dissipation part.

[0140] In some embodiments, the outdoor working vehicle of the present application comprises a battery compartment 21, a battery pack 22 and a power management device 23, the battery compartment 21 has an opening; the battery pack 22 is configured to be assembled in the battery compartment 21 along the opening, and the battery pack 22 can supply power to the outdoor working vehicle; the power management device 23 is at least configured to control the charging and discharging of the battery pack 22, and an airflow channel 27 is formed between the power management device 23 and the battery compartment 21; the power management device 23 comprises a housing 230 with a cavity and at least one circuit board in the cavity, the part of the housing 230 in contact with the airflow channel 27 is a heat dissipation part, and the circuit board is arranged close to the heat dissipation part.

[0141] As described above, the circuit board is arranged close to the airflow channel 27, so that the heat dissipation effect of the circuit board is better than that of the circuit board arranged relatively far from the airflow channel 27.

[0142] In some embodiments, two circuit boards are arranged in the cavity of the power management device 23 on the outdoor working vehicle, one of which is at least a first circuit board 24 capable of transmitting high-power current, and the other is at least a second circuit board 25 capable of outputting communication information, and the first circuit board 24 is arranged close to the heat dissipation part. Arranging the first circuit board 24 close to the part of the first housing 230 is conducive to the heat dissipation of the first circuit board 24 which generates more heat.

[0143] As shown in Figure 3 , in some embodiments, the heat dissipation part is a first cover plate 234 at the first accommodating cavity 232. Further, the first cover plate 234 is made of a metal material.

[0144] As shown in Figure 6 , Figures 10-12 , and Figure 6As shown, in some embodiments, the application further includes a power management device 23 with heat dissipation function, which is at least applied to outdoor working vehicles. The power management device 23 includes a housing body 231 with a chamber having an opening, the chamber is configured to accommodate at least one circuit board; and a heat conduction member capable of being arranged at the opening of the chamber, the heat conduction member is capable of exchanging heat between the heat generated by the circuit board during operation and the external cold medium. The circuit board is capable of dissipating the heat generated during operation in time by means of the heat conduction member. It should be understood that the chamber is the aforementioned first accommodating chamber 232, and the heat conduction member is the aforementioned first cover plate 234.

[0145] As shown, ​ In some embodiments, one surface of the circuit board is provided with electric elements capable of generating heat, and the other surface is provided with the heat conduction member. The adhesion arrangement effectively improves the heat dissipation effect of the circuit board. The electric elements capable of generating heat include the aforementioned mos switch 2431 and capacitor 2441 and the like.

[0146] As shown, ​ In order to further improve the heat dissipation effect, in some embodiments, the heat conduction member is arranged to have a large volume, which is helpful for the heat conduction member to exchange heat with the external cold medium, thereby improving the heat dissipation effect of the circuit board. Specifically, the heat conduction member is arranged in parallel with the circuit board, and the projection area of the heat conduction member is greater than or equal to the projection area of the circuit board along the direction perpendicular to the parallel direction of the heat conduction member and the circuit board. In some embodiments, the ratio of the projection area of the heat conduction member to the projection area of the circuit board is 1-1.5. In some embodiments, the ratio of the projection area of the heat conduction member to the projection area of the circuit board is 1, 1.2 or 1.5.

[0147] In some embodiments, the size of the power management device 23 of the application is: length 280-330 mm, width 200-260 mm, height 45-65 mm. In some embodiments, the size of the power management device 23 is: length 280 mm, 310 mm or 330 mm, width 200 mm, 230 mm or 260 mm, height 45 mm, 58 mm or 65 mm.

[0148] In some embodiments, the housing body 231 and the heat conduction member are made of different materials, and the heat conduction coefficient of the heat conduction member is greater than that of the housing body 231. The greater the heat conduction coefficient, the better the heat dissipation effect.

[0149] In some embodiments, the heat conduction member is made of metal material, and the housing body 231 is made of non-metal material.

[0150] The present application is not limited to the above-described specific embodiments. A person of ordinary skill in the art can easily understand that there are many alternatives of the outdoor work vehicle of the present application without departing from the principles and scope of the present application. The scope of protection of the present application is defined by the contents of the claims.

Claims

1. An outdoor work vehicle, characterized in that: include: A walking assembly, configured to support the outdoor work vehicle in walking; a power take-off assembly configured to perform outdoor work; A power supply system is configured to supply power to the outdoor work vehicle, the power supply system comprising: Battery compartment; a battery pack, mounted in the battery compartment; and A power management device includes a housing and a circuit board assembly located in the housing, wherein the circuit board assembly includes at least two stacked circuit boards, and each of the two stacked circuit boards is provided with a connecting portion; In the stacking direction, the orthographic projection surfaces of the two circuit boards have an overlapping area, and the connecting portion on at least one of the circuit boards is at least partially located outside the overlapping area.

2. The outdoor work vehicle according to claim 1, characterized in that: In the stacking direction, the orthographic projection area of ​​one of the two circuit boards is larger than the orthographic projection area of ​​the other circuit board, and the connecting portion on the larger circuit board is located outside the overlapping area.

3. The outdoor work vehicle according to claim 1 or 2, characterized in that: One of the two circuit boards is at least configured as a first circuit board capable of supplying power to the travel assembly and / or the power output assembly, and the other is at least configured as a second circuit board capable of outputting communication information; The connecting portion is configured as a first connecting portion connected to an external device on the first circuit board, and the connecting portion is configured as a second connecting portion connected to an external device on the second circuit board; In the stacking direction, the orthographic projection surface of the first circuit board and the orthographic projection surface of the second circuit board have an overlapping area, and the first connecting portion on the first circuit board is at least partially located outside the overlapping area.

4. The outdoor work vehicle according to claim 3, characterized in that: The first circuit board is provided with a first mounting surface for mounting the first connecting portion, and the second circuit board is provided with a second mounting surface for mounting the second connecting portion. The first mounting surface and the second mounting surface face the same direction.

5. The outdoor work vehicle according to claim 3, characterized in that: The first connecting portion is arranged on the first mounting surface of the first circuit board, and the first connecting portion includes a first terminal group and a second terminal group located in different areas; in the stacking direction, the orthographic projection surface of the first circuit board and the orthographic projection surface of the second circuit board have an overlapping area, and the first terminal group and the second terminal group are located on both sides of the overlapping area.

6. The outdoor work vehicle according to claim 5, characterized in that: The battery compartment includes a first side plate and a second side plate that are oppositely disposed, the battery pack is located between the first side plate and the second side plate, and the first side plate and the second side plate are both provided with external terminals that can be connected to the battery pack; In the horizontal direction, the first terminal group is arranged close to the first side plate, and the second terminal group is arranged close to the second side plate; The first terminal group can be connected to the external terminals on the first side plate, and the second terminal group can be connected to the external terminals on the second side plate.

7. The outdoor work vehicle according to claim 5, characterized in that: The first terminal group and the second terminal group on the first circuit board are located on both sides of the second circuit board and are arranged one after the other along the forward direction of the outdoor work vehicle.

8. The outdoor work vehicle according to claim 3, characterized in that: The first connecting portion is disposed on the first mounting surface of the first circuit board. The first connecting portion includes a first terminal group and a second terminal group located in different areas. The first terminal group and the second terminal group are located on the same side of the overlapping area.

9. The outdoor work vehicle according to claim 1, characterized in that: One of the two circuit boards is at least configured as a first circuit board capable of supplying power to the walking component and / or the power output component, and the other is at least configured as a second circuit board capable of outputting communication information. One surface of the first circuit board is fitted with the shell, and the other surface is connected to the second circuit board through a connecting member.

10. The outdoor work vehicle according to claim 9, characterized in that: The first circuit board is configured to supply power to the second circuit board, and the second circuit board is configured to output communication information to the first circuit board.

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