Outdoor work vehicle

Abstract

The utility model relates to an outdoor working vehicle. The outdoor working vehicle comprises a charging connector; performing control; 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 bin, and the battery pack can discharge to the outdoor operation vehicle and can obtain external electric energy to charge the battery pack; the power management device is at least configured to control charging and discharging of the battery pack, the power management device comprises a shell and at least one circuit board located in the shell, and a charging terminal and an electric energy output terminal which are independently arranged are arranged on the circuit board; the charging terminal is configured to obtain electric energy transmitted by the charging connector and charge the battery pack, and the electric energy output terminal is configured to receive power supplied by the battery pack and discharge to the controller. According to the outdoor operation vehicle, the terminal for charging the battery pack by receiving the electric energy of the charging gun on the circuit board and the terminal for discharging to the outside are independently arranged, so that the wiring harness layout is reasonable, and the maintenance efficiency is improved.

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 electric 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 mounted in the housing. The circuit board needs to receive the electric energy of the charging gun to charge the battery pack, and also needs to discharge externally to make the outdoor work vehicle work. If the terminals for receiving the charging gun and discharging externally are shared, more wire harnesses will be connected to the terminals. When the wires are led outside the housing, the housing will be more troublesome to close, and the maintenance of the wires will be more difficult and time-consuming because the wire harnesses are concentrated.

[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 in which the terminals for receiving external power on the circuit board and the terminals for external output can be separately arranged.

[0006] The technical solution adopted by the present application to solve the problems of the prior art is: an outdoor work vehicle, comprising: a walking assembly configured to support the outdoor work vehicle to walk; a power output assembly configured to perform outdoor work; a charging connector configured to receive external electric energy; a controller configured to at least control the operation of the walking assembly and / or the power output assembly; 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, the battery pack being capable of discharging to the outdoor work vehicle and capable of charging itself with external electric energy; and a power management device configured to at least control the charging and discharging of the battery pack, the power management device comprising a housing and at least one circuit board located in the housing, the circuit board being provided with a charging terminal and an electric energy output terminal arranged independently of each other; the charging terminal being configured to be capable of obtaining electric energy transmitted by the charging connector and capable of charging the battery pack, the electric energy output terminal being configured to receive power supply from the battery pack and discharge to the controller.

[0007] In some embodiments, two circuit boards are provided in the shell, one of which is configured as a first circuit board and the other is configured as a second circuit board; the first circuit board is configured at least to install the charging terminal and the power output terminal; the second circuit board is configured at least to control the operation of the first circuit board, and the first circuit board has a charging state and a discharging state; in the charging state, the second circuit board can control the first circuit board to supply power to the battery pack via the charging terminal; in the discharging state, the second circuit board can control the first circuit board to supply power to the controller via the power output terminal.

[0008] In some embodiments, the first circuit board and the second circuit board are stacked, and in the stacking direction, the projection surface of the first circuit board and the projection surface of the second circuit board have an overlapping area, and the charging terminal and the power output terminal are located outside the overlapping area.

[0009] In some embodiments, the charging terminal includes a positive charging terminal and a negative charging terminal; the power output terminal includes a positive output terminal and a negative output terminal; a conductor is connected between the negative charging terminal and the negative output terminal, and a current sensor is provided on the second circuit board for detecting the magnitude of the current flowing through the conductor.

[0010] In some embodiments, the current sensor includes a Hall ring having an inner hole, and the electrical conductor extends at least partially into the inner hole.

[0011] In some embodiments, the first circuit board and the second circuit board are stacked, and the conductor is arranged across the second circuit board.

[0012] In some embodiments, the circuit board is provided with a switch array and a capacitor array electrically connected to each other, the switch array is configured to control the on and off of the current flowing through itself, and the capacitor array is configured to store the charge flowing through itself, and the capacitor array is electrically connected to the charging terminal and the power output terminal respectively; in the charging state, the electric energy transmitted by the charging connector can charge the battery pack through the charging terminal, the capacitor array and the switch array in sequence; in the discharging state, the electric energy of the battery pack can be discharged to the controller through the switch array, the capacitor array and the power output terminal in sequence.

[0013] In some embodiments, the circuit board is further provided with a battery pack power terminal connected to the battery pack. The battery pack power terminal is configured on the circuit board to be electrically connected to the switch array. The battery pack receives electrical energy transmitted by the switch array through the battery pack power terminal or outputs electrical energy to the switch array through the battery pack power terminal.

[0014] In some embodiments, the shell is at least partially arranged as a heat dissipation part, which is in contact with the circuit board in the shell and a cold medium outside the shell, respectively.

[0015] In some embodiments, the power management device is connected to the battery compartment and forms an air flow channel with the battery compartment, and the heat dissipation part is at least partially located in the air flow channel.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] In the present application, by arranging the terminals for receiving the electric energy of the charging gun on the circuit board to charge the battery pack and the terminals for discharging externally independently, the wire harness layout is reasonable and not too concentrated, the efficiency of the shell cover is improved, and the convenience and efficiency of maintenance between the terminals and the wire harness are improved, and the wire harness is not messy due to too much concentration. [BRIEF DESCRIPTION OF DRAWINGS]

[0018] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings:

[0019] Figure 1 is a whole vehicle perspective view of the outdoor working vehicle in some embodiments of the present application;

[0020] 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;

[0021] 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;

[0022] Figure 4 is a perspective structural schematic diagram of the power management device of the outdoor working vehicle from one angle in some embodiments of the present application;

[0023] Figure 5 is a perspective structural schematic diagram of the power management device of the outdoor working vehicle from another angle in some embodiments of the present application;

[0024] Figure 6 is an exploded view of part of the structure of the power management device of the outdoor working vehicle in some embodiments of the present application;

[0025] 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, of the outdoor working vehicle in some embodiments of the present application;

[0026] Figure 8is a structural schematic view of an angle of a housing main body of an outdoor work vehicle in some embodiments of the present application;

[0027] Figure 9 is another structural schematic view of an angle of a housing main body of an outdoor work vehicle in some embodiments of the present application;

[0028] Figure 10 is a structural schematic view of a first circuit board in some embodiments of the present application;

[0029] Figure 11 is a structural schematic view of a second circuit board in some embodiments of the present application;

[0030] Figure 12 is a top structural schematic view of the first circuit board and the second circuit board in a stacking direction in some embodiments of the present application;

[0031] Figure 13 is a position schematic view of the first circuit board, the second circuit board and the first cover plate of an outdoor work vehicle in some embodiments of the present application;

[0032] Figure 14 is a logic block diagram of a power management device and a battery compartment, a battery pack, a controller, a power output assembly and a walking assembly of an outdoor work vehicle in some embodiments of the present application.

[0033] Meaning of reference signs in the drawings:

[0034] 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;

[0035] 22, battery pack;

[0036] 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;

[0037] 2302, second interface group; 23021, second battery pack connection interface; 23022, power delivery interface; 23023, signal delivery interface; 23024, second fan interface;

[0038] 231, housing main body; 232, first receiving cavity; 2321, first step surface; 23211, first through hole; 2322, second step surface; 23221, second through hole;

[0039] 233, second accommodating cavity; 2331, first wiring area; 2332, second wiring area;

[0040] 234, first cover plate; 2341, sealing accommodating groove; 2342, sealing strip; 235, second cover plate;

[0041] 24, first circuit board; 241, first mounting surface; 242, first connecting part;

[0042] 2421, first terminal group; 24211, first battery pack connecting terminal; 24212, charging terminal; 242121, charging positive terminal; 242122, charging negative terminal;

[0043] 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;

[0044] 25, second circuit board; 251, second mounting surface; 252, second connecting part;

[0045] 2521, third terminal group; 25211, first battery pack signal terminal; 25212, first fan terminal; 25213, charge and discharge signal terminal;

[0046] 2522, fourth terminal group; 25221, second battery pack signal terminal; 25222, second fan terminal; 25223, signal transmission terminal;

[0047] 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;

[0048] 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]

[0049] In order to make the objects, 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.

[0050] 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.

[0051] Please refer to Figure 1 The outdoor working vehicle shown is an embodiment of the present application, which comprises 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.

[0052] 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.

[0053] 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.

[0054] In some embodiments, control buttons for adjusting the running speed of the power output assembly 5 and the walking assembly 6 are arranged on the operation assembly 3, so as to facilitate the operator to quickly and accurately control the running of the outdoor working vehicle. Further, buttons for adjusting the brightness of the vehicle light of the outdoor working vehicle, buttons for adjusting the rotating speed of the cutter and the like can also be arranged on the operation assembly 3.

[0055] In some embodiments, a vehicle-mounted air blower can also be arranged at the front end of the frame 1, which is used to blow fallen leaves on the lawn, so as to reduce the disturbance to the operation of the outdoor working vehicle. Further, buttons for controlling the steering and blowing amount of the vehicle-mounted air blower are arranged on the operation assembly 3, so that the operator can control the vehicle-mounted air blower on the vehicle during driving operation, without getting off the vehicle.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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 of 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.

[0064] 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.

[0065] Please refer to Figure 2 , Figure 3 , Figure 6 , Figure 8 and Figure 9 In some embodiments, the power supply system 2 includes the battery compartment 21, the battery packs 22, and the 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.

[0066] 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.

[0067] As Figures 6-11As shown, in some embodiments, two circuit boards are disposed within the first accommodating cavity 232, one of which is configured as a first circuit board 24 capable of supplying energy to the travel assembly 6 and / or the power output assembly 5, and the other is configured as a second circuit board 25 capable of outputting communication information. The connection portion on the first circuit board 24 is configured as a first connection portion 242, and the connection portion on the second circuit board 25 is configured as a second connection portion 252. The first connection portion 242 can extend from the first accommodating cavity 232 to the second accommodating cavity 233, and the second connection portion 252 can extend from the first accommodating cavity 232 to the second accommodating cavity 233. Thus, the first circuit board 24 and the second circuit board 25 are disposed in the first accommodating cavity 232, with the first connection portion 242 of the first circuit board 24 and the second connection portion 252 of the second circuit board 25 extending into the second accommodating cavity 233. This allows the first circuit board 24 and the second circuit board 25 to establish electrical and / or signal connections with external devices through their respective connection portions, while reducing direct physical contact between the first circuit board 24 and the second circuit board 25 and preventing them from being bumped.

[0068] like Figure 8 and Figure 9 As shown, in some embodiments, the housing body 231 is formed with a first stepped surface 2321 and a second stepped surface 2322 within the first accommodating cavity 232. The first stepped surface 2321 is provided with a first through-hole 23211, and the second stepped 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 are both connected to 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. The second connecting portion 252 passes through the second through hole 23221 and is partially located in the second accommodating cavity 233. In this way, the first connecting portion 242 and the second connecting portion 252 are extended to the second accommodating cavity 233 through different first step surfaces 2321 and second step surfaces 2322 respectively. This helps to independently connect the first connecting portion 242 and the second connecting portion 252, so that the wiring harness connection is regular.

[0069] In some embodiments, the first through hole 23211 and the second through hole 23221 are located above the second accommodating cavity 233. This prevents liquid or water droplets in the second accommodating cavity 233 from flowing into the first accommodating cavity 232, thereby preventing contamination of the first circuit board, the second circuit board, or other components in the first accommodating cavity 232.

[0070] like 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.

[0071] 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.

[0072] 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.

[0073] 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 .

[0074] like Figures 8-11 As shown, in some embodiments, two second accommodating cavities 233 are provided, and the two second accommodating cavities 233 are respectively provided on both sides of the first accommodating cavity 232. Specifically, a first wiring area 2331 of each second accommodating cavity 233 is provided on each side of the first accommodating cavity 232, for a total of two first wiring areas 2331. Correspondingly, two first step surfaces 2321 are provided in the first accommodating cavity 232, each first step surface 2321 corresponding to a first wiring area 2331, and each first step surface 2321 is provided with a first through hole 23211 to connect to the first wiring area 2331. A second wiring area 2332 of each second accommodating cavity 233 is provided on each side of the first accommodating cavity 232, for a total of two second wiring areas 2332. Correspondingly, two second stepped surfaces 2322 are provided within the first accommodating cavity 232. Each second stepped surface 2322 corresponds to a second wiring area 2332, and each second stepped surface 2322 is provided with a second through-hole 23221 for connecting to the second wiring area 2332. The first circuit board 24 can be electrically connected and / or connected to external devices through the two first wiring areas 2331, and the second circuit board 25 can be electrically connected and / or connected to external devices through the two second wiring areas 2332.

[0075] like Figures 4-6 and Figure 10 and Figure 11 In some embodiments, a first cover plate 234 is provided at the opening of the first accommodating cavity 232, and a second cover plate 235 is provided at the opening of the second accommodating cavity 233. After the circuit board is installed in the first accommodating cavity 232, the first cover plate 234 can be used to seal the circuit board within the first accommodating cavity 232 to protect the first circuit board 24 and the second circuit board 25.

[0076] like Figure 4 and Figure 5 As shown, after an external device is connected to the first connection portion 242 and the second connection portion 252 via a wiring harness, the second cover 235 is used to store the first connection portion 242, the second connection portion 252, and a portion of the wiring harness located in the second accommodating cavity 233 within the second accommodating cavity 233. A first notch is provided on the housing body 231, and a second notch is provided on the second cover 235. When the second cover 235 is closed over the housing body 231, the first and second notches form a connection interface for the wiring harness to pass through.

[0077] like 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.

[0078] 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.

[0079] 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.

[0080] Please 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.

[0081] 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 repairing the circuit board in the power management device 23 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 convenient for the worker to access, and then the connecting portion is wired or unwired or the shell body 230 is disassembled for repairing the circuit board.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] 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-mentioned embodiments, 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 the battery compartment 21 is flipped over during maintenance, the second accommodating cavity 233 is flipped over together with the battery management device, so that the second accommodating cavity 233 is presented to the operator in a position and angle that is convenient for contact, so as to perform wire harness disassembly or disassembly of the shell 230 of the power management device 23.

[0086] 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 wire harness connection between the first terminal and the second terminal and external devices.

[0087] In some embodiments, the opening direction of the second accommodating cavity 233 of the power management device 23 can also be horizontally arranged, upwardly arranged, or inclinedly arranged upwardly or inclinedly arranged downwardly, or horizontally arranged, when the battery compartment 21 is arranged upwardly.

[0088] In some embodiments, the opening direction of the first accommodating cavity 232 is different from the opening direction of the battery compartment 21, i.e., the opening direction of the first accommodating cavity 232 is also downwardly arranged. 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 upwardly arranged, horizontally arranged, or downwardly arranged according to actual requirements.

[0089] In some embodiments, the opening direction of the battery compartment 21 is upwardly arranged, the opening direction of the first accommodating cavity 232 is upwardly arranged, and the opening direction of the second accommodating cavity 233 is downwardly arranged.

[0090] In some embodiments, the power management device 23 is arranged on the outdoor working vehicle, and the surface of the outdoor working vehicle connected with the power management device 23 is the connection surface, and the opening direction of the second accommodating cavity 233 is arranged to be opposite to the connection surface. Further, the power management device 23 can also be arranged on the vehicle frame 1 or the seat 4 or other feasible positions, and the surface of the outdoor working vehicle connected with the power management device 23 is the connection surface, and the opening direction of the second accommodating cavity 233 is arranged to be opposite to the connection surface, so as to prevent the connection surface from interfering with the disassembly of the shell 230 of the power management device 23 or the disassembly of the wire harness in the second accommodating cavity 233.

[0091] Please refer to FIG. 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.

[0092] Among them, the housing body 231 forms a first step surface 2321 and a second step surface 2322 with different heights in the first accommodating cavity 232, the first step 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 step 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 step 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 hidden trouble is reduced.

[0093] 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.

[0094] 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.

[0095] 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 wiring harness and reduces the occurrence of short circuit caused by the wiring harness.

[0096] 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 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 wiring harness is connected to the circuit board, and improves the wiring efficiency.

[0097] 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.

[0098] 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 at least configured as a first circuit board 24 capable of supplying power to the walking assembly 6 and / or the power output assembly 5, and the other is at least configured as a second circuit board 25 capable of outputting communication information. The connection portion on the first circuit board 24 is configured as a first connection portion 242 for connecting with external devices, and the connection portion on the second circuit board 25 is configured as a second connection portion 252 for connecting with external devices. In the stacking direction, the orthographic projection area of the first circuit board 24 overlaps with 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.

[0099] 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, the first connection portion 242 on the first circuit board 24 is at least partially located outside the overlapping area 259, and the first connection portion 242 on the first circuit board 24 can also be entirely located outside the overlapping area 259.

[0100] Please also refer to Figures 10-12 In some embodiments, one of the two circuit boards is at least configured as a first circuit board 24 capable of supplying power to the walking assembly 6 and / or the power output assembly 5, and the other is at least configured as a second circuit board 25 capable of outputting 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 installed, 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 externally. 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.

[0101] 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. In particular, when the first mounting surface 241 and the second mounting surface 251 face the same direction, the above arrangement allows 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 connect with external devices, respectively.

[0102] 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 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. In some embodiments, part of the terminals in the first terminal group 2421 of the second circuit board 25 will be connected with 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 with the external terminals 213 on the second side plate 212.

[0103] 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.

[0104] 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.

[0105] As shown in Figure 10As shown, in some embodiments, the first connection portion 242 is disposed on the first mounting surface 241 of the first circuit board 24. The first connection portion 242 includes a first terminal group 2421 and a second terminal group 2422 located in different areas. The first terminal group 2421 and the second terminal group 2422 are located on the same side of the overlapping area 259. Furthermore, the battery compartment 21 includes a first side panel 211 and a second side panel 212 disposed opposite each other, with the battery pack 22 located between the first side panel 211 and the second side panel 212. In the horizontal row direction, the first terminal group 2421 and the second terminal group 2422 can both be disposed near the first side panel 211 or the second side panel 212.

[0106] In some embodiments, the battery compartment 21 includes a first side panel 211 and a second side panel 212 disposed opposite each other, with the battery pack 22 located between the first side panel 211 and the second side panel 212. In the horizontal row, the third terminal group 2521 and the fourth terminal group 2522 on the second circuit board 25 can be disposed near the first side panel 211 or both near the second side panel 212.

[0107] In some embodiments, the power supply system 2 of the outdoor work 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 overheating of the output end during the charging and discharging process due to the setting of a single output end of the large-capacity battery pack 22, two output ends are set on the battery pack 22, respectively at the two ends of the battery pack 22, and the output end of each end is configured as a terminal for outputting electrical energy to the outside or charging the battery pack 22.

[0108] like Figure 2 、 Figure 3 and Figure 7 As shown, to facilitate electrical conduction between the two terminals of the battery pack 22, the battery compartment 21 of the present application includes a first side panel 211 and a second side panel 212, both of which are provided with external terminals 213. The battery pack 22 is located between the first side panel 211 and the second side panel 212, with the terminal at one end of the battery pack 22 connected to the external terminal 213 on the first side panel 211, and the terminal at the other end of the battery pack 22 connected to the terminal. The power management device 23 includes a housing 230 and at least one circuit board located within the housing 230, with a connecting portion provided on the circuit board. Horizontally, a portion of the connecting portion is located near the first side panel 211, and another portion is located near the second side panel 212. This facilitates electrical connection between the connecting portion of the power management device 23 and the respective external terminals 213, thereby facilitating the power management device 23's control over the charging and discharging of the battery pack 22.

[0109] Please also see 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, 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. 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, 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. At the same time, the wire harness layout is more reasonable.

[0110] 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.

[0111] 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.

[0112] 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.

[0113] 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.

[0114] As Figure 10 - to Figure 12In some embodiments, a first electrical component 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 component includes a switch array 243 and a capacitor array 244. The switch array 243 may be an array composed of multiple MOS switches 2431, and the capacitor array 244 may be an array composed of multiple capacitors 2441. A second electrical component 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 component includes a processor 257 and other processing modules.

[0115] Please also see Figures 1-4 、 Figures 10-12 In some embodiments, a charging connector 2112 for connecting to an external charging gun is further provided on the first side panel 211. The first interface group 2301 includes a charging interface 23012. Some terminals in the first terminal group 2421 are configured as charging terminals 24212 that can be connected to the charging connector 2112. The charging connector 2112 can be connected to the charging terminal 24212 through a wiring harness passing through the charging interface 23012. The charging terminal 24212 is electrically connected to the first battery pack power terminal 24211 and the second battery pack power terminal 24221 on the first circuit board 24, respectively. The third terminal group 2521 includes a charge and discharge signal terminal 25213 that can be connected to the charging connector 2112. The charging connector 2112 can be connected to the charge and discharge signal terminal 25213 through a wiring harness passing through the charging interface 23012. The charging gun supplies power to the outdoor work vehicle through the charging connector 2112. The charging connector 2112 is connected to the charging terminal 24212. The charging terminal 24212 is electrically connected to the first battery pack power terminal 24211 and the second battery pack power terminal 24221 through the first circuit board 24, respectively. It can supply power to the battery pack 22 and transmit the charging information of the charging terminal 24212 to the battery pack 22 in real time through the charge and discharge signal terminal 25213.

[0116] Please also see Figures 2-4 、 Figures 10-14In some embodiments, the outdoor work vehicle further includes a controller that controls the operation of at least the travel assembly 6 and the power output assembly 5. The second interface group 2302 includes a power transmission interface 23022. The second terminal group 2422 includes power output terminals 24222 capable of outputting electrical energy. The power output terminals 24222 can be connected to the controller via a wiring harness through the power transmission interface 23022. The second interface group 2302 also includes a signal transmission interface 23023. The fourth terminal group 2522 is configured as a signal transmission terminal 25223 that is connected to the controller for signal signals. The signal transmission terminals 25223 can be connected to the controller for signal signals via a wiring harness through the signal transmission interface 23023. The battery pack 22 transmits electrical energy to the power output assembly 5 and / or travel assembly 6 of the outdoor work vehicle via the power output terminals 24222 on the first circuit board 24. The battery pack 22 monitors the power transmission status of the power output terminals 24222 in real time via the signal transmission terminals 25223, so that the second circuit board 25 can control the battery pack 22 to supply power to the travel assembly 6 and / or the power output assembly 5.

[0117] Please also see Figures 2-4 、 Figures 10-14 In some embodiments, the charging terminal 24212 includes a positive charging terminal 242121 and a negative charging terminal 242122. The power output terminal 24222 includes a positive output terminal 242221 and a negative output terminal 242222. A conductor 245 is connected between the negative charging terminal 242122 and the negative output terminal 242222. The second circuit board 25 is provided with a current sensor for detecting current. Furthermore, the current sensor includes a Hall ring 258. The Hall ring 258 has an inner hole. The conductor 245 at least partially extends into the inner hole of the Hall ring 258. Specifically, the conductor 245 is further provided with a conductive post 2451, which extends into the inner hole of the Hall ring 258. The Hall ring 258 can monitor the current flowing through the conductor 245 and transmit the current information to the second circuit board 25 and the controller, so that information can be exchanged with the battery pack 22 based on the current detected by the Hall ring 258.

[0118] Please also see Figures 2-4 、 Figures 10-14In some embodiments, a first cooling fan 2111 is provided on the first side panel 211 to dissipate heat for the battery pack 22, and a second cooling fan 2112 is provided on the second side panel 212 to dissipate heat for the battery pack 22. Some interfaces in the first interface group 2301 also include a first fan interface 23013 configured to connect to the first cooling fan 2111. The third terminal group 2521 includes a first fan terminal 25212 configured to electrically connect to the first cooling fan 2111. The second interface group 2302 also includes a second fan interface 23024 configured to connect to the second cooling fan 2112. The fourth terminal group 2522 includes a second fan terminal 25222 configured to electrically connect to the second cooling fan 2112. In some embodiments, multiple first cooling fans 2111 are provided on the first side panel 211, and multiple second cooling fans 2112 are provided on the first side panel 211.

[0119] Please also see Figures 2-4 、 Figures 10-14 In the present application, the first cooling fan 2111 and the second cooling 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 speed and forward and reverse rotation of the first cooling fan 2111 and the second cooling fan 2112, and then execute corresponding instructions according to the heat dissipation required by the battery pack 22. For example, when the heat generated by the battery pack 22 is not high, only part of the multiple first cooling fans 2111 and the multiple second cooling fans 2112 are used to dissipate heat for the battery pack 22; when the heat generated by the battery pack 22 is high, all the multiple first cooling fans 2111 and the multiple second cooling fans 2112 are started to dissipate heat for the battery pack 22.

[0120] Furthermore, the multiple first cooling fans 2111 and the multiple second cooling fans 2112 in the present application can blow air to the battery pack 22 at the same time, or exhaust air to the outside at the same time, so as to extract the heat inside the battery pack 22 to achieve the purpose of cooling the battery pack 22, or some of the multiple first cooling fans 2111 and the multiple second cooling fans 2112 can be rotated forward or partially reversed.

[0121] In some embodiments, a fan step-down module 2561 is also provided on the second circuit board 25. The second circuit board 25 is electrically connected to the first circuit board 24, and obtains electrical energy from the battery pack 22 through the first circuit board 24, and converts the high voltage of the battery pack 22 into the low voltage required for the operation of the first cooling fan 2111 and the second cooling fan 2112 through the fan step-down module 2561.

[0122] 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.

[0123] 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.

[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 1-4 、 Figures 10-14In some embodiments, a compartment cover is provided at the opening of the battery compartment 21, and a monitoring switch 28 capable of monitoring the opening and closing status of the compartment cover is provided on the compartment cover. An expansion interface 23014 is provided on the housing 230. The circuit board is configured as at least a second circuit board 25 capable of outputting communication information, and a switch terminal 256 is provided on the second circuit board 25. The monitoring switch 28 can be connected to the switch terminal 256 through a wiring harness passing through the expansion interface 23014. When charging an outdoor work vehicle, since high-voltage charging is mostly used as the charging method, when the operator opens the compartment cover, the monitoring switch 28 on the compartment cover detects that the compartment cover is in the open state, and will transmit 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 and reduce the charging current and voltage to prevent harm to the operator.

[0126] The layered arrangement of the first circuit board 24 and the second circuit board 25 in this application also allows for the installation of a larger number of external connection interfaces on the first circuit board 24 and the second circuit board 25 within a limited space. This allows for the addition of functional modules to the first circuit board 24 and the second circuit board 25 as needed, and enables external information exchange or power transmission through the added interfaces, thereby enriching the functionality of the power management device 23. As mentioned above, the second circuit board 25 is equipped with a taillight buck module, a radar buck module, a cooling fan buck module, and the like.

[0127] In some embodiments, in the horizontal direction, the power management device 23 is arranged between the first side panel 211 and the second side panel 212, so that the power management device 23 can be electrically and signal-connected to the external terminals 213, the first cooling fan 2111, and the second cooling fan 2112 on the first side panel 211 and the second side panel 212 in a relatively balanced manner in the horizontal direction.

[0128] Please also see 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 can discharge to the outdoor working vehicle and can obtain external electric energy to charge itself; 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 obtain the electric energy transmitted by the charging connector 2112 and charge 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.

[0129] 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.

[0130] 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 above-mentioned overlapping area 259 can reduce the interference of the second circuit board 25 when connecting the wire harness of the charging terminal 24212 and the electric energy output terminal 24222. Moreover, when connecting the wire harness, the operator directly performs quick plug-in and plug-out operation on the connecting part extending into the second accommodating cavity, thereby improving the efficiency of assembly on the production line.

[0131] like Figures 10-14 As shown, in some embodiments, the first circuit board 24 and the second circuit board 25 are stacked, and the conductor 245 is arranged across the second circuit board 25. When the first circuit board 24 and the second circuit board 25 are arranged compactly, the conductor 245 is arranged across the second circuit board 25 to save space.

[0132] like Figures 1-3 In some embodiments, a switch array 243 and a capacitor array 244 are electrically connected to each other on the circuit board. The switch array 243 is configured to control the on / off of the current flowing through it, and the capacitor array 244 is configured to store the charge flowing through it. The capacitor array 244 is electrically connected to the charging terminal 24212 and the power output terminal 24222, respectively. In the charging state, the electric energy transmitted by the charging connector 2112 can charge the battery pack 22 in sequence through the charging terminal 24212, the capacitor array 244, and the switch array 243. In the discharging state, the electric energy of the battery pack 22 can be discharged to the controller in sequence through the switch array 243, the capacitor array 244, and the power output terminal 24222. Specifically, the circuit board is the first circuit board 24.

[0133] like Figure 8 In some embodiments, the circuit board is further provided with battery pack power terminals connected to the battery pack 22. The battery pack power terminals are configured on the circuit board to be electrically connected to the switch array 243. The battery pack 22 receives electrical energy from the switch array 243 via the battery pack power terminals or outputs electrical energy to the switch array 243 via the battery pack power terminals. In the discharge state, the battery pack 22 transmits electrical energy via the battery pack 22 power terminals to the capacitor array 244 via the switch array 243. The capacitor array 244 then transmits the electrical energy to the travel component 6 and / or the power output component 5. The capacitor array 244 can also transmit electrical energy to other electrical devices on the outdoor work vehicle or to the second circuit board 25 for power supply. In the charging state, external electrical energy is supplied to the capacitor array 244 via the charging connector 2112. The capacitor array 244 transmits the electrical energy via the switch array 243 and then to the battery pack 22 power terminals to charge the battery pack 22. The battery pack electrical terminals in this embodiment are the first battery pack electrical terminals 24211 and the second battery pack electrical terminals 24221 described above.

[0134] Please also see Figures 10-12In some embodiments, the outdoor work vehicle of the present application 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 assembled in the battery compartment 21 along the opening, and the battery pack 22 can supply power to the outdoor work vehicle. The power management device 23 is at least configured to 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 includes a shell 230 having a chamber and at least one circuit board located in the chamber. The portion of the shell 230 in contact with the air flow channel 27 is a heat dissipation portion, and the circuit board is at least partially arranged in contact with the heat dissipation portion. Such a setting can exchange the heat generated by the power management device 23 during operation with the external air to achieve the purpose of dissipating heat from the power management device 23.

[0135] See also Figure 7 As shown, in some embodiments, the chamber of the housing 230 may be the first accommodating chamber 232 in the aforementioned embodiment.

[0136] like Figures 10-12 As shown, in some embodiments, two circuit boards are provided in the chamber, one of which is at least configured as a first circuit board 24 capable of delivering high-power current, and the other is at least configured as a second circuit board 25 capable of outputting communication information, and the first circuit board 24 is provided in contact with the heat dissipation portion. The first circuit board 24 capable of delivering high-power current in the present application is equivalent to the aforementioned first circuit board 24 capable of supplying power to the walking component 6 and / or the power output component 5. As can be seen from the above, the first circuit board 24 is equipped with a MOS switch 2431 and a capacitor 2441, so it will generate more heat. Placing the first circuit board 24 close to the first shell 230 is beneficial to the heat dissipation of the circuit board.

[0137] like Figure 2 and Figure 3 As shown, in some embodiments, a circuit board assembly on an outdoor work vehicle includes a first circuit board 24 and a second circuit board 25 arranged in layers, one above the other. The first circuit board 24 is positioned in contact with the heat sink. Specifically, the first circuit board 24 is capable of transmitting high-power current, while the second circuit board 25 is capable of transmitting control instructions to control the operation of the first circuit board 24. Because the first circuit board 24 generates a large amount of heat, one purpose of designing it separately from the second circuit board 25 is to ensure that the high heat generated by the first circuit board 24 does not affect the operation of the second circuit board 25, but rather exchanges heat with the outside world through the heat sink.

[0138] like 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.

[0139] 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 the 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 the heat dissipation part, and the circuit board is arranged close to the heat dissipation part.

[0140] 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.

[0141] 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.

[0142] 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.

[0143] 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 main 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 by the circuit board 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.

[0144] 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 abutting 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.

[0145] 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.

[0146] 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.

[0147] In some embodiments, the housing main 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 main body 231. The greater the heat conduction coefficient, the better the heat dissipation effect.

[0148] In some embodiments, the heat conduction member is made of metal material, and the housing main body 231 is made of non-metal material.

[0149] 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 charging connector configured to receive external power; a controller, configured at least to control the operation of the travel assembly and / or the power output assembly; 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, capable of discharging electricity to the outdoor work vehicle and obtaining external electrical energy for charging itself; and a power management device configured at least to control the charging and discharging of the battery pack, the power management device comprising a housing and at least one circuit board located within the housing, the circuit board being provided with charging terminals and power output terminals independently arranged from each other; The charging terminal is configured to obtain the electric energy transmitted by the charging connector and charge the battery pack, and the electric energy output terminal is configured to receive the power from the battery pack and discharge it to the controller.

2. The outdoor work vehicle according to claim 1, characterized in that: Two circuit boards are provided in the housing, one of which is configured as a first circuit board and the other is configured as a second circuit board; The first circuit board is configured to at least mount the charging terminal and the power output terminal; The second circuit board is at least configured to control the operation of the first circuit board, and the first circuit board has a charging state and a discharging state; In a charging state, the second circuit board can control the first circuit board to supply power to the battery pack via the charging terminal; In the discharge state, the second circuit board can control the first circuit board to supply power to the controller via the power output terminal.

3. The outdoor work vehicle according to claim 2, characterized in that: The first circuit board and the second circuit board are stacked. In the stacking direction, the projection surface of the first circuit board and the projection surface of the second circuit board have an overlapping area, and the charging terminal and the power output terminal are located outside the overlapping area.

4. The outdoor work vehicle according to claim 2, characterized in that: The charging terminal includes a positive charging terminal and a negative charging terminal; The electric energy output terminal includes an output positive terminal and an output negative terminal; A conductor is connected between the negative charging terminal and the negative output terminal, and a current sensor for detecting the magnitude of the current flowing through the conductor is provided on the second circuit board.

5. The outdoor work vehicle according to claim 4, characterized in that: The current sensor includes a Hall ring having an inner hole, and the electrical conductor at least partially extends to the inner hole.

6. The outdoor work vehicle according to claim 4, characterized in that: The first circuit board and the second circuit board are stacked, and the conductor is arranged across the second circuit board.

7. The outdoor work vehicle according to claim 1, characterized in that: The circuit board is provided with a switch array and a capacitor array electrically connected to each other, the switch array is configured to control the on and off of the current flowing through it, and the capacitor array is configured to store the charge flowing through it, and the capacitor array is electrically connected to the charging terminal and the power output terminal respectively; In the charging state, the electric energy transmitted by the charging connector can sequentially pass through the charging terminal, the capacitor array and the switch array to charge the battery pack; In a discharging state, the electric energy of the battery pack can be discharged to the controller through the switch array, the capacitor array and the electric energy output terminal in sequence.

8. The outdoor work vehicle according to claim 7, characterized in that: The circuit board is also provided with a battery pack electrical terminal connected to the battery pack. The battery pack electrical terminal is configured on the circuit board to be electrically connected to the switch array. The battery pack receives electrical energy transmitted by the switch array through the battery pack electrical terminal or outputs electrical energy to the switch array through the battery pack electrical terminal.

9. The outdoor work vehicle according to claim 7, characterized in that: At least a portion of the housing is configured as a heat dissipation portion, and the heat dissipation portion is in contact with the circuit board in the housing and a cold medium outside the housing, respectively.

10. The outdoor work vehicle according to claim 9, characterized in that: The power management device is connected to the battery compartment and forms an air flow channel with the battery compartment. The heat dissipation portion is at least partially located in the air flow channel.

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