Electric drive module and water surface cleaning equipment

Abstract

The utility model discloses an electric drive module and water surface cleaning equipment, and relates to the technical field of cleaning equipment.The electric drive module comprises an installation box and an electric drive unit, the installation box comprises a first box body and a second box body which are spliced, and the first box body and the second box body jointly define an installation cavity; the electric drive unit comprises a battery, a motor and a first electrical wire harness connected with the battery and the motor, a main body of the motor, the battery and the first electrical wire harness are arranged in the mounting cavity, and a rotating shaft of the motor penetrates out of the mounting cavity to be connected with paddles of the water surface cleaning equipment in a driving manner. According to the technical scheme, the waterproof performance of the water surface cleaning equipment is improved, and the possibility that a motor or a battery is damaged due to the fact that water enters a wire outlet hole of the water surface cleaning equipment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning equipment, in particular to an electric drive module and water surface cleaning equipment. Background Art

[0002] Floating garbage such as leaves and plastic bags often appear on the surface of lakes and pools. If these garbage are not cleaned up in time, they will cause great damage to the water quality. Therefore, water surface cleaning equipment is needed to clean the garbage on the water surface to keep the water clean. In existing water surface cleaning equipment, wire outlet holes are usually opened in the outer shells of batteries and motors for wiring harnesses to connect batteries and motors. Since the water surface cleaning equipment works in the water body, part of it will be immersed in the water body. Water may enter the wire outlet holes and cause damage to the motor or battery, and these wiring harnesses immersed in water may also cause leakage short circuit. Utility Model Content

[0003] The main purpose of the utility model is to provide an electric drive module, aiming to improve the waterproof performance of water surface cleaning equipment and reduce the possibility of damage to the motor or battery of the water surface cleaning equipment due to water entering the outlet hole.

[0004] To achieve the above-mentioned purpose, the electric drive module proposed in the utility model is applied to water surface cleaning equipment, and the electric drive module includes:

[0005] An installation box, the installation box comprising a first box body and a second box body connected to each other, the first box body and the second box body together enclose an installation cavity; and

[0006] An electric drive unit, the electric drive unit includes a battery, a motor and a first electrical wiring harness connecting the battery and the motor, the main body of the motor, the battery, and the first electrical wiring harness are arranged in the installation cavity, and the rotating shaft of the motor passes through the installation cavity to drive the blades connected to the water surface cleaning device.

[0007] In one embodiment, the second box body is provided with a mounting flange extending circumferentially relative to one end of the first box body, and the mounting flange is provided with a plurality of first mounting holes. The inner side wall of the first box body is provided with a plurality of mounting posts, and a plurality of the mounting posts are provided with a plurality of first through holes at one end relative to the second box body, and one of the mounting posts is arranged corresponding to one of the first mounting holes. The electric drive module also includes a fastener, and the plurality of the first mounting holes are each penetrated by the fastener, and one of the fasteners is sequentially penetrated through one of the first mounting holes and one of the corresponding first through holes to connect the first box body and the second box body.

[0008] In one embodiment, the electric drive module further includes a seal provided on the mounting flange, the seal extending around the mounting flange, and when the first box body is connected to the second box body, the inner side wall of the first box body abuts against the seal.

[0009] In one embodiment, the seal is arranged to avoid the first mounting hole. When the first box body is connected to the second box body, the seal is arranged between the mounting cavity and the mounting column. The side surface of the seal relative to the mounting hole abuts against the side surface of the mounting column.

[0010] In one embodiment, the first box body is further provided with a plurality of outlet holes for the second electrical wiring harness to pass through, and the outlet holes are arranged above the water level so that the second electrical wiring harness is not immersed in the water.

[0011] In one embodiment, the battery is disposed in the first box, the two motors are disposed in the second box, a main control motor board is also mounted in the second box, and the first box is disposed above the second box.

[0012] In one embodiment, in the width direction of the second box body, two opposite outer side walls of the second box body are provided with a mounting shell, the mounting shell has a first cavity connected to the mounting cavity, the first cavity is used to place a motor, and the two mounting shells are provided with a second through hole at one end away from the first cavity, and the rotating shafts of the two motors pass through the second through holes on both sides to drive the blades connected to the water surface cleaning equipment, and the two second through holes are provided with sealing rings, which are used to be sleeved on the rotating shaft to seal the second through hole, and an oil seal is also provided at one end of the rotating shaft of the motor away from the mounting shell.

[0013] In one embodiment, the two mounting shells are each provided with a plurality of second mounting holes at one end of the second through hole, and the plurality of second mounting holes of one mounting shell are arranged around the second through hole, and the second through hole is used to pass a fixing member, and the fixing member is used to fix the drive motor to the mounting shell, and the plurality of second mounting holes are each provided with a sealing ring, and the sealing ring is used to be sleeved on the fixing member to seal the second mounting hole.

[0014] In one embodiment, the electric drive module further includes a power switch disposed on the side wall of the first box body, the power switch is connected to the battery, and the power switch is disposed above the water level so that the power switch is not immersed in water.

[0015] The utility model also provides a water surface cleaning device, comprising the aforementioned electric drive module.

[0016] The technical solution of the utility model adopts an electric drive module, and sets a first box body and a second box body that are spliced ​​together. The first box body and the second box body surround an installation cavity, and the motor and the battery are placed in the installation cavity. The first electrical wiring harness for electrically connecting the battery and the motor is also placed in the installation cavity, so that the first electrical wiring harness connects the battery and the motor in the installation cavity, and there is no need to open an outlet hole for the first electrical wiring harness to extend outward on the box body where the battery and the motor are installed, thereby improving the airtightness of the installation box, so that the installation box will not be flooded when the water surface cleaning equipment is working, thereby damaging the battery and the motor. At the same time, the first electrical wiring harness is not exposed, thereby reducing the possibility of the first electrical wiring harness being easily damaged due to exposure, and the first electrical wiring harness will not be immersed in the water body, thereby reducing the possibility of the first electrical wiring harness entering water and causing a short circuit in the equipment, thereby ensuring the stability of the operation of the water surface cleaning equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0018] Figure 1 A schematic structural diagram of an embodiment of an electric drive module provided by the utility model;

[0019] Figure 2 This is a schematic diagram of an exploded structure of an electric drive module according to an embodiment of the present invention;

[0020] Figure 3 for Figure 2 A schematic diagram of the structure from another angle;

[0021] Figure 4 This is a structural schematic diagram of an embodiment of a water surface cleaning device provided by the utility model.

[0022] Description of Figure Numbers:

[0023] 100, first box body; 110, mounting column; 111, first through hole; 120, wire outlet hole; 200, second box body; 210, mounting flange; 211, first mounting hole; 220, mounting shell; 221, first cavity; 222, second through hole; 223, second mounting hole; 300, mounting cavity; 410, battery; 420, motor; 421, rotating shaft; 430, first electrical wiring harness; 440, second electrical wiring harness; 450, main control motor board; 510, fastener; 520, fixing piece; 610, sealing piece; 620, sealing ring; 630, oil seal; 700, paddle; 800, power switch; 900, casing.

[0024] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0027] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0028] There are often floating garbage such as leaves and plastic bags on the surface of lakes and pools. If these garbage are not cleaned up in time, it will cause great damage to the water quality. Therefore, water surface cleaning equipment is needed to clean the garbage on the water surface to keep the water clean. In existing water surface cleaning equipment, outlet holes are usually opened in the outer shells of batteries and motors for wiring harnesses to pass through and connect batteries and motors. Since the water surface cleaning equipment is working in the water body, part of it will be immersed in the water body, and water may enter the outlet holes, causing damage to the motor or battery, and these wiring harnesses may also cause leakage short circuits when immersed in water. For this reason, the utility model proposes an electric drive module, which aims to improve the waterproof performance of the water surface cleaning equipment and reduce the possibility of damage to the motor or battery caused by water entering the outlet holes of the water surface cleaning equipment.

[0029] See also Figures 1 to 4 In one embodiment of the utility model, the electric drive module includes an installation box and an electric drive unit. The installation box includes a first box body 100 and a second box body 200 that are spliced ​​together. The first box body 100 and the second box body 200 together enclose an installation cavity 300. The electric drive unit includes a battery 410, a motor 420 and a first electrical wiring harness 430 connecting the battery 410 and the motor 420. The main body of the motor 420, the battery 410, and the first electrical wiring harness 430 are arranged in the installation cavity 300, and the rotating shaft 421 of the motor 420 passes through the installation cavity 300 to drive the paddle 700 connected to the water surface cleaning device. In this way, the first box body 100 and the second box body 200 are connected to each other, and the first box body 100 and the second box body 200 surround the installation cavity 300, and the motor 420 and the battery 410 are placed in the installation cavity 300, and the first electrical wiring harness 430 for electrically connecting the battery 410 and the motor 420 is also placed in the installation cavity 300, so that the first electrical wiring harness 430 connects the battery 410 and the motor 420 in the installation cavity 300, and there is no need to open a hole for the battery 410 and the motor 420 on the box body. The wire outlet hole 120 for the first electrical wiring harness 430 to extend outward improves the airtightness of the installation box, so that water will not enter the installation box when the water surface cleaning equipment is working, thereby damaging the battery 410 and the motor 420. At the same time, the first electrical wiring harness 430 is not exposed, reducing the possibility of the first electrical wiring harness 430 being easily damaged due to exposure, and the first electrical wiring harness 430 will not be immersed in the water body, reducing the possibility of the first electrical wiring harness 430 entering water and causing a short circuit in the equipment, thereby ensuring the stability of the operation of the water surface cleaning equipment.

[0030] Optionally, in one embodiment, the second box body 200 is provided with a mounting flange 210 extending circumferentially relative to one end of the first box body 100, and the mounting flange 210 is provided with a plurality of first mounting holes 211. The inner side wall of the first box body 100 is provided with a plurality of mounting columns 110, and the plurality of mounting columns 110 are each provided with a plurality of first through holes 111 at one end relative to the second box body 200, and one mounting column 110 is arranged corresponding to one first mounting hole 211. The electric drive module also includes a fastener 510, and the plurality of first mounting holes 211 are each penetrated by the fastener 510, and one fastener 510 is sequentially penetrated through a first mounting hole 211 and a corresponding first through hole 111 to connect the first box body 100 and the second box body 200. In this way, a mounting flange 210 is provided, and a plurality of first mounting holes 211 are opened in the circumferential direction of the mounting flange 210, so that the mounting holes are opened on the outside of the cavity of the second box body 200, so that the fastener 510 is passed through the first mounting hole 211 below, and the fastener 510 is passed through the first mounting hole 211 and the first through hole 111 in sequence from below the mounting flange 210 to connect the first box body 100 and the second box body 200, thereby realizing the assembly of the first box body 100 and the second box body 200. The detachable connection between the first box body 100 and the second box body 200 improves the convenience of assembling the first box body 100 and the second box body 200, and improves the efficiency of assembling the electric drive module.

[0031] Optionally, in another embodiment, there may be multiple types of fasteners 510, bolts may be selected to connect the first box body 100 and the second box body 200, and pins may be selected to connect the first box body 100 and the second box body 200, as long as the first box body 100 and the second box body 200 can be connected.

[0032] Optionally, in one embodiment, the electric drive module further includes a seal 610 disposed on the mounting flange 210, the seal 610 extends around the mounting flange 210, and when the first box 100 is connected to the second box 200, the inner side wall of the first box 100 abuts against the seal 610. In this way, the seal 610 is extended around the mounting flange 210, and when the first box 100 and the second box 200 are connected, the inner side wall of the first box 100 abuts against the side of the seal 610, so as to improve the sealing of the first box 100 and the second box 200 after assembly, so that the mounting box is not easy to be flooded when immersed in water, which causes damage to the battery 410 and the motor 420, and ensures the stable operation of the water surface cleaning device.

[0033] Optionally, in another embodiment, the seal 610 may have a variety of structural forms, and a sealing rubber ring may be provided circumferentially at the position where the mounting flange 210 abuts against the first box body 100 to improve the sealing of the mounting box, as long as the sealing of the mounting box can be improved.

[0034] Optionally, in one embodiment, the seal 610 is arranged to avoid the first mounting hole 211. When the first box 100 and the second box 200 are connected, the seal 610 is arranged between the mounting cavity 300 and the mounting column 110, and the side of the seal 610 relative to a mounting hole abuts against the side of the mounting column 110. In this way, the seal 610 is arranged to avoid the first mounting hole 211. When the first box 100 and the second box 200 are spliced, the seal 610 is sandwiched between the mounting cavity 300 and the mounting column 110, so that the first mounting hole 211 is arranged outside the mounting cavity 300 and is not connected to the mounting cavity 300, thereby improving the sealing of the connection between the first box 100 and the second box 200, and reducing the possibility of water entering the mounting cavity 300 from the first mounting hole 211 to damage the motor 420 and the battery 410. At the same time, the side of the sealing member 610 abuts against the side of the mounting column 110, further improving the sealing performance of the sealing member 610 at the connection between the first box body 100 and the second box body 200, thereby ensuring good waterproof performance of the mounting box.

[0035] Optionally, in another embodiment, the first mounting hole 211 can be set in multiple ways. The first mounting hole 211 can also be set to be connected to the mounting cavity 300, and a sealing rubber ring can be set on the side around the first mounting hole 211 to improve the sealing of the first mounting hole 211, as long as the sealing of the mounting box can be improved.

[0036] Optionally, in one embodiment, the first box 100 is also provided with a plurality of outlet holes 120 for the second electrical harness 440 to pass through, and the outlet holes 120 are arranged above the water level so that the second electrical harness 440 is not immersed in the water body. In this way, the outlet holes 120 for connecting other electrical structures in the first box 100 are arranged above the water level. The water level mentioned here refers to the maximum height value from the bottom to the water surface when the water surface cleaning device can be immersed in the water body when the water surface cleaning device is working on the water surface. Therefore, the outlet holes 120 of the first box 100 are arranged above the water level, which reduces the possibility of the outlet holes 120 being immersed in the water body and causing the first box 100 to enter the water, improves the waterproof performance of the first box 100, and ensures the normal operation of the motor 420 and the battery 410. It is worth mentioning that a sealing rubber ring can be selectively installed at the outlet hole 120 to further improve the sealing at the outlet hole 120.

[0037] Optionally, in another embodiment, the position of the wire outlet hole 120 can be set in various ways. The wire outlet hole 120 can be set on the side of the upper end of the first box body 100, or on the side of the first box body 100, as long as the wire outlet hole 120 is set above the water level.

[0038] Optionally, in one embodiment, the battery 410 is disposed in the first box body 100 , two motors 420 are disposed in the second box body 200 , a main control motor 420 board 450 is also installed in the second box body 200 , and the first box body 100 is disposed above the second box body 200 . In this way, the battery 410 is arranged in the first box body 100, and the two motors 420 and the main control motor 420 board 450 are all arranged in the second box body 200 to lower the center of gravity of the electric drive module, improve the stability of the electric drive module, and make the water surface cleaning equipment run more stably on the water surface. The first box body 100 is arranged above the second box body 200 to increase the installation height of the first box body 100, increase the height of the first box body 100 above the water surface, and further increase the distance between the wire outlet hole 120 on the first box body 100 and the water surface, so that when the water surface cleaning equipment is immersed in the water body, the water flow is not easy to penetrate into the installation box through the wire outlet hole 120, thereby improving the waterproof performance of the installation box and ensuring the safe operation of the water surface cleaning equipment.

[0039] Optionally, in another embodiment, there may be various arrangements between the first box body 100 and the second box body 200, and the first box body 100 may be arranged on the side of the second box body 200, as long as the wire outlet hole 120 is above the water level.

[0040] Optionally, in one embodiment, in the width direction of the second box body 200, the two opposite outer side walls of the second box body 200 are provided with a mounting shell 220, and the mounting shell 220 has a first cavity 221 connected to the mounting cavity 300, and a first cavity 221 is used to place a motor 420. The two mounting shells 220 are each provided with a second through hole 222 at one end away from the first cavity 221, and the rotating shafts 421 of the two motors 420 are each passed through the second through holes 222 on both sides to drive the paddles 700 connected to the water surface cleaning equipment. The two second through holes 222 are each provided with a sealing ring 620, and the sealing ring 620 is used to be sleeved on the rotating shaft 421 to seal the second through hole 222. The rotating shaft 421 of the motor 420 is also provided with an oil seal 630 at one end away from the mounting shell 220. In this way, two mounting shells 220 are arranged in the width direction of the second box body 200 to arrange the two motors 420 in the two mounting shells 220, and the rotating shafts 421 of the motors 420 at both ends pass through the second through holes 222 to be connected with the paddles 700, so that the motors 420 are arranged in the mounting shells 220, reducing the possibility of the motors 420 being exposed and causing water ingress and leakage, and a sealing ring 620 is arranged at the second through hole 222 to improve the sealing of the mounting shell 220, and an oil seal 630 is also arranged at the end of the rotating shaft 421 of the motor 420, which improves the sealing of the rotating shaft 421, and further improves the sealing of the mounting shell 220, so that water is not easy to enter the mounting shell 220 and the second box body 200 from the rotating shaft 421, reducing the possibility of the motor 420 being damaged by leakage due to water ingress, and ensuring the normal operation of the motor 420.

[0041] Optionally, in one embodiment, both mounting shells are provided with a plurality of second mounting holes 223 at one end of the second through hole 222, and a plurality of second mounting holes 223 of a mounting shell 220 are arranged around the second through hole 222, and the second through hole 222 is used to pass a fixing member 520, and the fixing member 520 is used to fix the driving motor 420 to the mounting shell 220, and the plurality of second mounting holes 223 are provided with a sealing ring 620, and the sealing ring 620 is used to be sleeved on the fixing member 520 to seal the second mounting hole 223. In this way, a plurality of second mounting holes 223 are opened in the mounting shell 220, and the fixing member 520 passes through the second mounting holes 223 to fix the motor 420 to the mounting shell 220, thereby realizing the fixation of the motor 420 on the mounting shell 220, improving the stability of the motor 420, making it less likely for the motor 420 to shake during operation and affect the cleaning effect of the water surface cleaning equipment, and sealing rings 620 are arranged at the plurality of second mounting holes 223 to improve the sealing performance of the mounting shell 220, making it less likely for water to enter the mounting shell 220 through the second mounting holes 223 and damage the motor 420, thereby ensuring the stable operation of the water surface cleaning equipment.

[0042] Optionally, in another embodiment, the second mounting hole 223 and the structure of the fixing member 520 may be omitted, and the motor 420 may be directly installed in the second box body 200 .

[0043] Optionally, in one embodiment, the electric drive module further includes a power switch 800 disposed on the side wall of the first box body 100, the power switch 800 is connected to the battery 410, and the power switch 800 is disposed above the water level so that the power switch 800 is not immersed in the water body. In this way, the power switch 800 that controls the power supply of the battery 410 is disposed above the water level, so that when the water surface cleaning device is running on the water surface, the water flow is not easy to penetrate the power switch 800 and cause damage to the power switch 800 and the battery 410, thereby ensuring the stability and safety of the electric drive module.

[0044] Optionally, in another embodiment, the power switch 800 can be positioned in a variety of ways. The power switch 800 can be set at the upper end of the first box body 100, or on the side of the first box body 100, as long as the power switch 800 is set above the water level.

[0045] The utility model also proposes a water surface cleaning device, which includes a housing 900 and an electric drive module. The specific structure of the electric drive module refers to the above embodiment. Since the water surface cleaning device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0046] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An electric drive module, applied to water surface cleaning equipment, characterized in that: The electric drive module comprises: An installation box, the installation box comprising a first box body and a second box body connected to each other, the first box body and the second box body together enclose an installation cavity; and An electric drive unit, the electric drive unit includes a battery, a motor and a first electrical wiring harness connecting the battery and the motor, the main body of the motor, the battery, and the first electrical wiring harness are arranged in the installation cavity, and the rotating shaft of the motor passes through the installation cavity to drive the blades connected to the water surface cleaning device.

2. The electric drive module according to claim 1, characterized in that: The second box body is provided with a mounting flange extending circumferentially relative to one end of the first box body, and the mounting flange is provided with a plurality of first mounting holes. The inner side wall of the first box body is provided with a plurality of mounting posts, and a plurality of the mounting posts are provided with a plurality of first through holes at one end relative to the second box body, and one of the mounting posts is arranged corresponding to one of the first mounting holes. The electric drive module also includes a fastener, and the plurality of the first mounting holes are each penetrated by the fastener, and one of the fasteners is sequentially penetrated through one of the first mounting holes and one of the corresponding first through holes to connect the first box body and the second box body.

3. The electric drive module according to claim 2, characterized in that: The electric drive module further includes a seal provided on the mounting flange, wherein the seal extends around the mounting flange. When the first box body is connected to the second box body, the inner side wall of the first box body abuts against the seal.

4. The electric drive module according to claim 3, characterized in that: The sealing member is arranged to avoid the first mounting hole. When the first box body is connected to the second box body, the sealing member is arranged between the mounting cavity and the mounting column. The side surface of the sealing member opposite to the mounting hole abuts against the side surface of the mounting column.

5. The electric drive module according to claim 1, characterized in that: The first box body is also provided with a plurality of outlet holes for the second electrical wiring harness to pass through, and the outlet holes are arranged above the water level so that the second electrical wiring harness is not immersed in the water.

6. The electric drive module according to claim 1, characterized in that: The battery is arranged in the first box body, the two motors are arranged in the second box body, a main control motor board is also arranged in the second box body, and the first box body is arranged above the second box body.

7. The electric drive module according to claim 6, characterized in that: In the width direction of the second box body, two opposite outer side walls of the second box body are provided with a mounting shell, and the mounting shell has a first cavity connected to the mounting cavity, and the first cavity is used to place a motor, and a second through hole is provided at one end of the two mounting shells away from the first cavity, and the rotating shafts of the two motors pass through the second through holes on both sides to drive the blades connected to the water surface cleaning equipment, and the two second through holes are provided with sealing rings, and the sealing rings are used to be sleeved on the rotating shaft to seal the second through hole, and an oil seal is also provided at one end of the rotating shaft of the motor away from the mounting shell.

8. The electric drive module according to claim 7, characterized in that: Both mounting shells are provided with a plurality of second mounting holes at one end of the second through hole. The plurality of second mounting holes of one mounting shell are arranged around the second through hole. The second through hole is used to pass a fixing member, and the fixing member is used to fix the motor to the mounting shell. The plurality of second mounting holes are provided with a sealing ring, and the sealing ring is used to be sleeved on the fixing member to seal the second mounting hole.

9. The electric drive module according to claim 5, characterized in that: The electric drive module also includes a power switch arranged on the side wall of the first box body, the power switch is connected to the battery, and the power switch is arranged above the water level line so that the power switch is not immersed in the water.

10. A water surface cleaning device, characterized in that: It comprises an electric drive module as claimed in any one of claims 1 to 9.

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