Integrated electric drive system for walking and lifting

Abstract

The application relates to a walking and lifting integrated electric driving system, which comprises a cooling liquid circulating assembly, a cooling assembly and two groups of bottom blocking boxes, the top of the two groups of bottom blocking boxes is connected with a top blocking box, a motor is arranged in the bottom blocking box, a motor driving control system is arranged in the top blocking box, the motor driving control system for controlling the motor is arranged in the top blocking box, the outer side of the motor is connected with a first heat conduction part, the outer side of the top blocking box is connected with a second heat conduction part, the cooling liquid circulating assembly comprises a pump body, a liquid storage tank filled with cooling liquid and a pipeline part, the cooling assembly comprises a fan and a cooling pipeline part arranged on the outer side of the bottom blocking box, and the pump body is used for driving the cooling liquid to circulate and flow among the liquid storage tank, the first heat conduction part, the second heat conduction part and the cooling pipeline part. Through the application, the motor and the motor driving control system during operation can be subjected to multiple integrated heat dissipation, and the heat dissipation effect is good.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of motor technology, in particular to a walking and lifting integrated electric drive system. BACKGROUND

[0002] The walking and lifting electric drive system is mainly applied to scenes such as electric forklifts, electric cranes, and some engineering machinery equipment with material handling and self-moving functions, and is generally used for traction motors that realize the walking and moving functions of the equipment, and lifting motors that are responsible for completing work functions such as cargo lifting and crane lifting. In the new energy engineering machinery vehicle drive system, it includes a drive motor and a control system, a battery and a management system.

[0003] The drive motor and control system of the existing drive system are usually designed and installed independently. There are disadvantages such as large volume, low system efficiency, and weak anti-interference ability. It is not conducive to further improving the power density and reliability of the electric drive system. Therefore, some existing technologies adopt "integration" design of traction motors, work motors and electric drive control systems to reduce energy conversion losses and improve vehicle efficiency.

[0004] However, in the "integration" design, the heat dissipation method is mostly to set up independent heat dissipation means for each component, such as separately equipping the traction motor with an air-cooled radiator, the work motor with natural cooling or simple fin heat dissipation, and the electric drive control system with a small cooling fan. This decentralized heat dissipation has many problems, such as each heat dissipation system being independent, low overall heat dissipation efficiency, and difficulty in meeting the heat dissipation needs of multiple components under complex working conditions. SUMMARY

[0005] The present application provides a walking and lifting integrated electric drive system to overcome the shortcomings of the prior art. The specific technical solutions are as follows:

[0006] The walking and lifting integrated electric drive system comprises a cooling liquid circulation assembly, a cooling assembly and two groups of bottom barrier boxes, the top of the two groups of bottom barrier boxes is connected with a top barrier box, a motor is installed in the inside of the bottom barrier box, a motor drive control system is installed in the inside of the top barrier box, a motor drive control system for controlling the motor is installed in the inside of the top barrier box, a first heat conduction part is connected around the outside of the motor, a second heat conduction part is connected around the outside of the top barrier box, the cooling liquid circulation assembly comprises a pump body, a liquid storage tank filled with cooling liquid and a pipeline part, the cooling assembly comprises a fan and a cooling pipeline part arranged on the outside of the bottom barrier box, the blowing direction of the fan is aligned with the cooling pipeline part, the pipeline part is used to connect the liquid storage tank, the pump body, the first heat conduction part, the second heat conduction part and the cooling pipeline part in communication, and the pump body is used to drive the cooling liquid to circulate between the liquid storage tank, the first heat conduction part, the second heat conduction part and the cooling pipeline part.

[0007] As the improvement of the above technical solution: the first heat conduction part includes a plurality of first heat conduction connecting pipes arranged outside the motor, the plurality of first heat conduction connecting pipes are connected through pipes, the second heat conduction part includes a plurality of second heat conduction connecting pipes arranged outside the motor drive control system, the second heat conduction connecting pipes are connected through pipes, the pipe part includes a first liquid passage pipe, a second liquid passage pipe, a third liquid passage pipe and a fourth liquid passage pipe, and the cooling pipe includes a cooling pipe.

[0008] As the improvement of the above technical solution: the input end of the pump body is connected with the inside of the liquid storage tank through a pipe, one end of the first liquid passage pipe is connected with the output end of the pump body, the other end of the first liquid passage pipe penetrates the bottom blocking box and is connected with the first heat conduction connecting pipe at the first end of one of the motors, one end of the third liquid passage pipe is connected with the first heat conduction connecting pipe at the tail end of the motor, the other end of the third liquid passage pipe is connected with the first heat conduction connecting pipe at the first end of the other motor, one end of the fourth liquid passage pipe is connected with the first heat conduction connecting pipe at the tail end of the motor, the other end of the fourth liquid passage pipe is connected with the second heat conduction connecting pipe at the first end of the motor drive control system, one end of the second liquid passage pipe is connected with the second heat conduction connecting pipe at the tail end of the motor drive control system, the other end of the second liquid passage pipe is connected with the first end of the cooling pipe, and the tail end of the cooling pipe is connected with the inside of the liquid storage tank.

[0009] As the improvement of the above technical solution: the motor is connected with an output shaft, the output shaft is connected with a ring-shaped rotating block through a connecting piece, the outer side of the ring-shaped rotating block is fixedly connected with a plurality of fan blades, the inner cavity of the bottom blocking box and the inner cavity of the top blocking box are connected through an air pipe, the back surface of the bottom blocking box is connected with a first filter screen plate, the front surface of the bottom blocking box is connected with a third filter screen plate, one end of the output shaft extends to the outside of the bottom blocking box through the third filter screen plate, and the back of the top blocking box is connected with a second filter screen plate.

[0010] As the improvement of the above technical solution: the cooling pipe is arranged in a wave shape, and part of the cooling pipe is aligned with the first filter screen plate and / or the second filter screen plate, and a heat exchanger for cooling the liquid in the liquid storage tank is mounted on the liquid storage tank.

[0011] As the improvement of the above technical solution: the inner side of the first heat-conducting connecting pipe is matched with the outer side of the motor, the outer side of the first heat-conducting connecting pipe is circularly arranged, the connecting piece is connected with an annular mounting block, a plurality of semiconductor refrigerating sheets are mounted on the annular mounting block, the refrigerating end of the semiconductor refrigerating sheet extends to the inner side of the annular mounting block and is connected with a silica gel heat-conducting block, the heating end of the semiconductor refrigerating sheet extends to the outer side of the annular mounting block, the silica gel heat-conducting block is arranged in an arc shape and is in contact with the outer side of the first heat-conducting connecting pipe.

[0012] As the improvement of the above technical solution: the connecting piece is a planetary gear part, the planetary gear part is connected on the output shaft, and the planetary gear part is connected with the annular rotating block on the same shaft.

[0013] As the improvement of the above technical solution: the connecting piece comprises an annular connecting inner block, a connecting rod and an annular connecting outer block, the annular connecting inner block is connected on the output shaft, the annular connecting inner block is connected with the annular connecting outer block through the connecting rod, and the annular connecting outer block is connected with the annular rotating block on the same shaft.

[0014] The beneficial effects of the present application are as follows:

[0015] 1. When the motor is operated for a long time, a large amount of heat is generated on the motor and the motor drive control system, part of the heat on the motor and the motor drive control system is respectively absorbed by the first heat-conducting connecting pipe and the second heat-conducting connecting pipe, and at the same time, the pump body is started to drive the cooling liquid to continuously flow on the cooling and heat dissipation pipe and the first heat-conducting connecting pipe, so that the cooling liquid can absorb part of the heat on the first heat-conducting connecting pipe and the second heat-conducting connecting pipe, thereby achieving a certain heat dissipation effect on the motor and the motor drive control system.

[0016] 2. At the same time, the motor is rotated to drive the output shaft to rotate, the connecting piece drives the annular rotating block and the fan blade to rotate, and the air in the bottom blocking box is circulated, on one hand, the air is circulated from the front side of the bottom blocking box to the inside of the bottom blocking box and then flows out from the rear side of the bottom blocking box, so as to effectively dissipate the heat in the bottom blocking box, on the other hand, the air in the bottom blocking box can be circulated from the air pipe to the inside of the top blocking box, and then part of the heat in the top blocking box is discharged from the second filter screen, thereby further dissipating the heat of the motor in the bottom blocking box and the motor drive control system in the top blocking box.

[0017] 3、Meanwhile, by running multiple semiconductor refrigeration pieces, on the one hand, the output shaft drives the annular rotating block on the connecting piece to rotate, so that the annular mounting block connected with the annular rotating block rotates synchronously, so that the refrigeration end of the semiconductor refrigeration piece is in contact with the outside of the first heat-conducting connecting pipe through the silica gel heat-conducting block, which can absorb the heat on the first heat-conducting connecting pipe, on the other hand, the refrigeration end of the semiconductor refrigeration piece can absorb the heat inside the motor during rotation, thereby enhancing the heat dissipation effect of the motor, so that the motor and the motor drive control system during operation can be multi-integrated heat dissipation, good heat dissipation effect, meet the heat dissipation demand of multiple components under complex working conditions. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the overall structure schematic diagram of the application;

[0019] Figure 2 It is the internal front view structure schematic diagram of the overall;

[0020] Figure 3 It is the rear view structure schematic diagram of the overall;

[0021] Figure 4 It is the structure schematic diagram of the connecting piece in one embodiment of the application;

[0022] Figure 5 It is the structure schematic diagram between the annular mounting block and the first heat-conducting connecting pipe in the application.

[0023] The drawings show that: 1, bottom barrier box;101, first filter screen plate;2, top barrier box;201, second filter screen plate;3, motor;31, output shaft;4, planetary gear part;5, annular rotating block;51, fan blade;6, motor drive control system;61, second heat-conducting connecting pipe;7, air pipe;8, liquid storage tank;9, pump body;10, first liquid pipe;11, second liquid pipe;12, third liquid pipe;13, fourth liquid pipe;14, third filter screen plate;15, annular connecting inner block;151, connecting rod;152, annular connecting outer block;16, annular mounting block;17, semiconductor refrigeration piece;171, silica gel heat-conducting block;18, first heat-conducting connecting pipe;19, cooling pipe;20, fan. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the application more clear, the application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the application and not to limit the application.

[0025] Embodiment

[0026] Please refer toFigures 1-5 The application discloses a walking and lifting integrated electric driving system, which comprises a cooling liquid circulating assembly, a cooling assembly and two groups of bottom blocking boxes 1, the top of the two groups of bottom blocking boxes 1 is connected with a top blocking box 2, the inside of the bottom blocking box 1 is installed with an electric motor 3, the inside of the top blocking box 2 is installed with an electric motor driving control system 6, the inside of the top blocking box 2 is installed with the electric motor driving control system 6 used for controlling the electric motor 3, the outside of the electric motor 3 is connected with a first heat conduction part, the outside of the top blocking box 2 is connected with a second heat conduction part, the cooling liquid circulating assembly comprises a pump body 9, a liquid storage tank 8 filled with cooling liquid and a pipeline part, the cooling assembly comprises a fan arranged on the outside of the bottom blocking box 1 and a cooling pipeline piece, the blowing direction of the fan is aligned with the cooling pipeline piece, the pipeline part is used for connecting the liquid storage tank 8, the pump body 9, the first heat conduction part, the second heat conduction part and the cooling pipeline piece in communication, and the pump body 9 is used for driving the cooling liquid to circulate and flow between the liquid storage tank 8, the first heat conduction part, the second heat conduction part, the pipeline part and the cooling pipeline piece, and the mutual influence of the magnetic fields on the two groups of bottom blocking boxes 1 can be avoided through the two groups of bottom blocking boxes 1.

[0027] In an optional embodiment, the first heat conduction part comprises a plurality of first heat conduction connecting pipes 18 arranged on the outside of the electric motor 3, the plurality of first heat conduction connecting pipes 18 are connected in communication through pipelines, the second heat conduction part comprises a plurality of second heat conduction connecting pipes 61 arranged on the outside of the electric motor driving control system 6, the plurality of second heat conduction connecting pipes 61 are connected in communication through pipelines, the pipeline part comprises a first liquid passing pipe 10, a second liquid passing pipe 11, a third liquid passing pipe 12 and a fourth liquid passing pipe 13, and the cooling pipeline piece comprises a cooling and temperature reducing pipe 19.

[0028] In an optional embodiment, the input end of the pump body 9 is connected in communication with the inside of the liquid storage tank 8 through a pipeline, one end of the first liquid passing pipe 10 is connected in communication with the output end of the pump body 9, the other end of the first liquid passing pipe 10 is connected in communication with the first heat conduction connecting pipe 18 on the first end of one of the electric motors 3 after penetrating through the bottom blocking box 1, one end of the third liquid passing pipe 12 is connected in communication with the first heat conduction connecting pipe 18 on the tail end of the electric motor 3, the other end of the third liquid passing pipe 12 is connected in communication with the first heat conduction connecting pipe 18 on the first end of the other electric motor 3, one end of the fourth liquid passing pipe 13 is connected in communication with the first heat conduction connecting pipe 18 on the tail end of the electric motor 3, the other end of the fourth liquid passing pipe 13 is connected in communication with the second heat conduction connecting pipe 61 on the first end of the electric motor driving control system 6, one end of the second liquid passing pipe 11 is connected in communication with the second heat conduction connecting pipe 61 on the tail end of the electric motor driving control system 6, the other end of the second liquid passing pipe 11 is connected in communication with the first end of the cooling and temperature reducing pipe 19, and the tail end of the cooling and temperature reducing pipe 19 is connected in communication with the inside of the liquid storage tank 8.

[0029] In an optional embodiment: the motor 3 is connected with an output shaft 31, the output shaft 31 is connected with the annular rotating block 5 through the connecting piece, the outer side of the annular rotating block 5 is fixedly connected with a plurality of fan blades 51, the inner cavity of the bottom blocking box 1 and the inner cavity of the top blocking box 2 are connected through the air pipe 7, the back of the bottom blocking box 1 is connected with the first filter screen plate 101, the front of the bottom blocking box 1 is connected with the third filter screen plate 14, one end of the output shaft 31 extends to the outside of the bottom blocking box through the third filter screen plate 14, the back of the top blocking box 2 is connected with the second filter screen plate 201, specifically, when the motor 3 rotates, the output shaft 31 is driven to rotate, so that the plurality of fan blades 51 on the annular rotating block 5 rotate, and the air in the bottom blocking box 1 flows, on the one hand, the air can flow from the front of the bottom blocking box 1 to the inside of the bottom blocking box 1 and then flow out from the back of the bottom blocking box 1, so as to effectively dissipate the heat in the bottom blocking box 1, on the one hand, the air in the bottom blocking box 1 can flow from the air pipe 7 to the inside of the top blocking box 2, and then the heat in the inside of the top blocking box 2 flows out from the second filter screen plate 201, so as to effectively dissipate heat. Through the first filter screen plate 101 and the second filter screen plate 201, the ventilation of the bottom blocking box 1 and the top blocking box 2 is achieved while preventing external impurities and dust from entering the inside.

[0030] In an optional embodiment: the cooling pipe 19 is arranged in a wave shape, and part of the cooling pipe 19 is aligned with the first filter screen plate 101 and / or the second filter screen plate 201, so that the flowing air can pass through the cooling pipe 19 to cool the first filter screen plate 101, thereby effectively cooling the cooling liquid in the first filter screen plate 101. The heat exchanger is installed on the liquid storage tank 8 to cool the cooling liquid in the liquid storage tank 8, thereby further cooling the cooling liquid and maintaining the cooling effect of the cooling liquid.

[0031] In an optional embodiment: the inner side of the first heat-conducting connecting pipe 18 is matched with the outer side of the motor 3, the outer side of the first heat-conducting connecting pipe 18 is circularly arranged, the connecting piece is connected with the annular mounting block 16, and the annular mounting block 16 is mounted with a plurality of semiconductor refrigeration pieces 17. The refrigeration end of the semiconductor refrigeration piece 17 extends to the inner side of the annular mounting block 16 and is connected with the silica gel heat-conducting block 171, the heating end of the semiconductor refrigeration piece 17 extends to the outer side of the annular mounting block 16, the silica gel heat-conducting block 171 is arranged in an arc shape and is in contact with the outer side of the first heat-conducting connecting pipe 18, and part of the heat on the first heat-conducting connecting pipe 18 is absorbed and dissipated by operating the semiconductor refrigeration piece 17.

[0032] In an alternative embodiment: the connecting piece is a planetary gear part 4, the planetary gear part 4 is connected to the output shaft 31, the planetary gear part 4 is connected to the ring-shaped rotating block 5 in the same axis, when the motor 3 drives the output shaft 31 to rotate, the planetary gear part 4 can slow down the ring-shaped rotating block 5, so as to avoid the ring-shaped rotating block 5 drives the connected ring-shaped mounting block 16 to rotate too fast.

[0033] In an alternative embodiment: the connecting piece includes a ring-shaped connecting inner block 15, a connecting rod 151 and a ring-shaped connecting outer block 152, the ring-shaped connecting inner block 15 is connected to the output shaft 31, the ring-shaped connecting inner block 15 is connected to the ring-shaped connecting outer block 152 through the connecting rod 151, the ring-shaped connecting outer block 152 is connected to the ring-shaped rotating block 5 in the same axis, specifically, the outer side of the first heat-conducting connecting pipe 18 can be made of graphite and other materials such as metal or ceramic, the graphite has lubricating effect, and the graphite has good heat conductivity, which meets the use requirement.

[0034] Specifically, when the motor 3 is operated for a long time, a large amount of heat will be generated on the motor 3 and the motor drive control system 6, part of the heat on the motor 3 and the motor drive control system 6 is respectively absorbed by the first heat-conducting connecting pipe 18 and the second heat-conducting connecting pipe 61, at the same time, the pump body 9 is started, the cooling liquid is continuously circulated in the cooling pipe 19 and the first heat-conducting connecting pipe 18 through the pump body 9, so that the cooling liquid can absorb part of the heat on the first heat-conducting connecting pipe 18 and the second heat-conducting connecting pipe 61, so as to achieve a certain heat dissipation effect on the motor 3 and the motor drive control system 6.

[0035] At the same time, the motor 3 drives the output shaft 31 to rotate, the connecting piece drives the ring-shaped rotating block 5 and the fan blade 51 to rotate, so that the air in the bottom blocking box 1 circulates, on one hand, the air can circulate from the front side of the bottom blocking box 1 to the inside of the bottom blocking box 1 and then flow out from the rear side of the bottom blocking box 1, so as to effectively dissipate the heat in the bottom blocking box 1, on the other hand, the air in the bottom blocking box 1 can circulate from the air pipe 7 to the inside of the top blocking box 2, and then part of the heat in the top blocking box 2 flows out from the second filter screen 201, so as to further dissipate the heat of the motor 3 in the bottom blocking box 1 and the motor drive control system 6 in the top blocking box 2.

[0036] Meanwhile, by running the plurality of semiconductor refrigeration pieces 17, on the one hand, the ring rotating block 5 on the connecting piece is driven to rotate by the output shaft 31, so that the ring rotating block 5 connected with the ring rotating block 5 is synchronously rotated, so that the refrigeration end of the semiconductor refrigeration piece 17 is in contact with the outside of the first heat conduction connecting pipe 18 through the silica gel heat conduction block 171, and the heat on the first heat conduction connecting pipe 18 can be absorbed, on the other hand, the refrigeration end of the semiconductor refrigeration piece 17 can absorb the heat inside the motor 3 in the rotating process, thereby enhancing the heat dissipation effect of the motor 3, and the motor 3 and the motor driving control system 6 during operation can be multi-integrated heat dissipation, and the heat dissipation effect is good.

[0037] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An integrated electric drive system for walking and lifting, characterized in that, The utility model provides a cooling system of motor drive control system, including cooling liquid circulation assembly, cooling assembly and two groups of bottom barrier box (1), the top of two groups of bottom barrier box (1) is connected with top barrier box (2), the inside installation of bottom barrier box (1) is with motor (3), the inside installation of top barrier box (2) is with motor drive control system (6), the outside of motor (3) surrounds and is connected with first heat conduction part, the outside of top barrier box (2) surrounds and is connected with second heat conduction part, cooling liquid circulation assembly includes injection pump body (9), the liquid storage tank (8) of injection with cooling liquid and pipeline part, cooling assembly includes the fan (20) of bottom barrier box (1) outside and cooling pipeline piece, the pipeline part is used to link between liquid storage tank (8), pump body (9), first heat conduction part, second heat conduction part and cooling pipeline piece, and pump body (9) is used to drive cooling liquid circulation flow between liquid storage tank (8), first heat conduction part, second heat conduction part, pipeline part and cooling pipeline piece.

2. The integrated electric drive system of claim 1, wherein: The first heat conduction part includes a plurality of first heat conduction connecting pipes (18) arranged outside the motor (3), and the plurality of first heat conduction connecting pipes (18) are connected by a pipeline. The second heat conduction part includes a plurality of second heat conduction connecting pipes (61) arranged outside the motor drive control system (6), and the second heat conduction connecting pipes (61) are connected by a pipeline. The pipeline part includes a first liquid passage pipe (10), a second liquid passage pipe (11), a third liquid passage pipe (12), and a fourth liquid passage pipe (13). The cooling pipeline piece includes a cooling and temperature reduction pipe (19).

3. The integrated electric drive system of claim 2, wherein: The input end of the pump body (9) is connected to the inside of the liquid storage tank (8) by a pipeline. One end of the first liquid passage pipe (10) is connected to the output end of the pump body (9). The other end of the first liquid passage pipe (10) penetrates through the bottom barrier box (1) and is connected to the first heat conduction connecting pipe (18) at the head end of one of the motors (3). One end of the third liquid passage pipe (12) is connected to the first heat conduction connecting pipe (18) at the tail end of the motor (3). The other end of the third liquid passage pipe (12) is connected to the first heat conduction connecting pipe (18) at the head end of the other motor (3). One end of the fourth liquid passage pipe (13) is connected to the first heat conduction connecting pipe (18) at the tail end of the motor (3). The other end of the fourth liquid passage pipe (13) is connected to the second heat conduction connecting pipe (61) at the head end of the motor drive control system (6). One end of the second liquid passage pipe (11) is connected to the second heat conduction connecting pipe (61) at the tail end of the motor drive control system (6). The other end of the second liquid passage pipe (11) is connected to the head end of the cooling and temperature reduction pipe (19). The tail end of the cooling and temperature reduction pipe (19) is connected to the inside of the liquid storage tank (8).

4. The integrated electric drive system of claim 3, wherein: The motor (3) is connected with an output shaft (31), the output shaft (31) is connected with an annular rotating block (5) through a connecting piece, the outer side of the annular rotating block (5) is fixedly connected with a plurality of fan blades (51), the inner cavity of the bottom blocking box (1) and the inner cavity of the top blocking box (2) are connected through a ventilation pipe (7), the back surface of the bottom blocking box (1) is connected with a first filter screen plate (101), the front surface of the bottom blocking box (1) is provided with a third filter screen plate (14), one end of the output shaft (31) extends to the outside of the bottom blocking box (1) through the third filter screen plate (14), and the back of the top blocking box (2) is connected with a second filter screen plate (201).

5. The integrated electric drive system of claim 4, wherein: The cooling pipe (19) is arranged in a wave shape, and part of the cooling pipe (19) is aligned with the first filter screen plate (101) and / or the second filter screen plate (201), and the liquid storage tank (8) is provided with a heat exchanger for cooling the liquid in the liquid storage tank (8).

6. The integrated electric drive system of claim 5, wherein: The inner side of the first heat-conducting connecting pipe (18) is matched with the outer side of the motor (3), the outer side of the first heat-conducting connecting pipe (18) is circular, the connecting piece is connected with an annular mounting block (16), a plurality of semiconductor refrigeration pieces (17) are mounted on the annular mounting block (16), the refrigeration end of the semiconductor refrigeration piece (17) extends to the inner side of the annular mounting block (16) and is connected with a silica gel heat-conducting block (171), and the heating end of the semiconductor refrigeration piece (17) extends to the outer side of the annular mounting block (16). The silica gel heat-conducting block (171) is arranged in an arc shape and is in contact with the outer side of the first heat-conducting connecting pipe (18).

7. The integrated electric drive system of claim 6, wherein: The connecting piece is a planetary gear part (4), the planetary gear part (4) is connected with the output shaft (31), and the planetary gear part (4) is connected with the annular rotating block (5).

8. The integrated electric drive system of claim 6, wherein: The connecting piece comprises an annular connecting inner block (15), a connecting rod (151) and an annular connecting outer block (152), the annular connecting inner block (15) is connected with the output shaft (31), the annular connecting inner block (15) is connected with the annular connecting outer block (152) through the connecting rod (151), and the annular connecting outer block (152) is connected with the annular rotating block (5).

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