CN115923536A - Distributed electric wheel-side driving device, system and method - Google Patents
Distributed electric wheel-side driving device, system and method Download PDFInfo
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Abstract
The invention discloses a distributed electric wheel driving device, a system and a method, which relate to the technical field of wheel driving, and the method comprises a starting program; judging each demand flow; according to the torque demand judgment in the driving, sliding and braking states, a corresponding number of driving mechanisms are configured to drive the whole vehicle; the system comprises motor controllers, a generator, a battery and a high-voltage cabinet, wherein information is transmitted between the motor controllers through a CAN network; the device comprises a driving mechanism, a planet carrier mechanism and a sun gear mechanism; the sun gear mechanism is arranged in the planet carrier mechanism; a planet wheel mechanism is arranged on the planet carrier mechanism; the end part of the second planet carrier is connected with a shell of the driving mechanism; the first sun gear is connected with the driving mechanism, the second sun gear is meshed with the second planet gear, and the first planet carrier is connected with the second sun gear. The invention adopts a distributed driving structure, thereby reducing the purchase and use costs of single-wheel bearing load and wearing parts of tires; saving power and improving the stability of the mine car.
Description
Technical Field
The invention relates to the technical field of wheel edge driving, in particular to a distributed electric wheel edge driving device and method.
Background
The mining car usually adopts mechanical transmission, namely, the torque of an engine is output through a hydraulic automatic transmission, the power is transmitted to a rear axle, a rear axle differential distributes the power to a wheel hub to drive the vehicle to move forward, when the mechanical transmission vehicle works under the working condition of low speed and large torque, the efficiency of a mechanical transmission system can be greatly reduced by using a hydraulic torque converter and the differential, and the oil consumption of the engine is high; when the vehicle load exceeds 90 tons, the traditional axle cannot meet the weighing requirement, the rigid body vehicle adopts single-axle rear drive transmission, tires are heavy in bearing weight, the cost is high, the load of the whole vehicle is limited by a drive system, and the vehicle is difficult to lift. Therefore, a high-power off-highway distributed electric wheel-side driving system needs to be designed, and the high-power wide-body vehicle and the mining truck with the load of 35-150 tons can be designed for a target vehicle type.
Chinese patent publication No. CN104786804a discloses a vehicle, a wheel-side drive system thereof, and a wheel-side drive torque distribution method, wherein the number of drive shafts of the drive system is not less than 2, the space in the vehicle can be more reasonably arranged, and better dynamic performance, passenger carrying capacity, and climbing performance are enhanced compared with a single-motor-driven passenger vehicle; the torque of each driving shaft can be flexibly distributed according to the power required by the vehicle, so that higher efficiency of a wheel driving system is obtained, and the power consumption of a power battery is saved to the maximum extent; and the inter-axle torque distribution, the steering differential speed and other control modules are combined together to form a set of control method suitable for a multi-rear-axle wheel-side driving system, and the advanced automobile electronic control system functions of energy optimization, ASR, ESP, EBS and the like of the driving system can be realized.
Chinese patent No. CN114571989a discloses a wheel-side driving structure, a wheel-side driving assembly and a vehicle, wherein the wheel-side driving structure includes a planetary gear train, a driving motor unit and a speed-regulating motor unit, wherein the planetary gear train includes a sun gear, a gear ring and a planet carrier for driving wheels, the speed-regulating motor unit is in transmission connection with the sun gear, and the driving motor unit is in transmission connection with the gear ring; or the planetary gear train comprises a double planet carrier for driving wheels and a small sun gear and a large sun gear, wherein the rotation axes of the small sun gear and the large sun gear are coincident, the speed regulating motor unit is in transmission connection with the small sun gear, and the driving motor unit is in transmission connection with the large sun gear. The wheel driving assembly and the vehicle comprise a left wheel driving structure and a right wheel driving structure which share a driving motor unit, and the left wheel driving structure and the right wheel driving structure comprise the wheel driving structures.
However, the control processes and structures of the above-identified patents are complex, and the determination of the torque demand under different conditions cannot be effectively determined when a plurality of wheel-side driving devices are involved. Therefore, the design structure is simple, the torque requirement of the wheel edge driving device under various conditions can be effectively judged, and the problems of whole vehicle slipping, incorrect steering and the like caused by error execution of wheel end torque are prevented.
Disclosure of Invention
The invention provides a distributed electric wheel-side driving device, a system and a method, aiming at the problems of whole vehicle slipping, incorrect steering and the like caused by error execution of wheel-end torque in the prior art.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a distributed electric wheel driving method comprises a distributed electric wheel driving system and comprises the following steps:
step S1: starting a program, and judging the current state of the wheel edge driving system;
step S2: when the wheel edge system is in a driving state, judging the driving torque requirement; when the wheel side system is in a braking state, a judgment process of braking torque requirements is carried out; when the wheel side system is in a sliding state, a sliding torque requirement judgment process is carried out;
and step S3: and according to the torque demand judgment in the driving, sliding and braking states, configuring a corresponding number of driving mechanisms to drive the whole vehicle.
Based on the above technical solution, further, in step S2, the process of determining the driving torque demand includes the following steps:
step 1: calculating a drive torque request;
step 2: judging whether to execute the driving torque according to the current state of charge (SOC) of the battery: if SOC is less than or equal to SOC Low Executing that the driving torque is 0 and issuing an alarm that the battery level is low; if SOC > SOC Low Executing the required torque of the driving;
and step 3: selecting the number of driving mechanisms: if Trq Req <33%Trq max Then two driving mechanisms are arranged to complete the driving of the whole vehicle; if 33% Trq max ≤Trq Req ≤66%Trq max Four driving mechanisms are arranged to complete the driving of the whole vehicle; if Trq Req >66%Trq max Six driving mechanisms are arranged to complete the driving of the whole vehicle; wherein, trq Req Representative of the torque demand, trq max Representing the maximum torque.
Based on the above technical solution, further, in step S2, the process of determining the braking torque demand includes the following steps:
step 11: calculating a braking torque demand;
step 12: judging whether to execute braking torque according to the current state of charge (SOC) of the battery: if SOC is greater than SOCmax, executing brake torque is zero, and sending out an alarm that the battery capacity is high; if SOC < SOCmax, executing the braking demand torque;
step 13: selecting the number of driving mechanisms: trq (Trq) Req >33%Trq min Then two driving mechanisms are arranged to complete the braking of the whole vehicle; if 33% Trq min ≥Trq Req ≥66%Trq min Four driving mechanisms are arranged to complete the braking of the whole vehicle; if Trq Req ＜66%Trq min And six driving mechanisms are arranged to complete the braking of the whole vehicle.
Based on the above technical solution, further, in step S2, a determination process of the coasting torque request is performed, and after the calculated coasting torque request is confirmed to be 0, the vehicle is in the coasting state in the case of a vehicle speed; when the vehicle speed is not high, the vehicle is in a free state.
A distributed electric wheel driving system comprises distributed electric wheel driving devices, wherein each wheel driving device is connected with a driving motor; the driving motor is connected with the motor controllers, and information is transmitted between each motor controller through a CAN (controller area network) which is a common communication protocol and a common tool of the vehicle; the motor controller and the driving device are independent and are connected with the driving motor through a high-voltage wire harness;
the power supply system also comprises a generator, a battery and a high-voltage cabinet, wherein the high-voltage cabinet is used for adjusting the power ratio of the battery to the generator.
A distributed electric wheel edge driving device comprises a driving mechanism, a planet carrier mechanism and a sun wheel mechanism; the sun gear mechanism is arranged in the planet carrier mechanism; the planet carrier mechanism comprises a first planet carrier and a second planet carrier, and a planet wheel mechanism is arranged on the planet carrier mechanism and comprises a first planet wheel and a second planet wheel, and a sun wheel mechanism comprises a first sun wheel and a second sun wheel; the end part of the second planet carrier is connected with a shell of the driving mechanism, a second planet wheel is arranged on the second planet carrier, and a first planet wheel is arranged on the first planet carrier; the first sun gear penetrates through the second sun gear to be connected with an output interface of the driving mechanism, the second sun gear is meshed with the second planet gear, the end part of the first sun gear is meshed with the first planet gear, and the first planet carrier is connected with the second sun gear.
Based on above-mentioned technical scheme, further, actuating mechanism encloses the outside and is equipped with the casing, and the side of second planet carrier passes through the bolt and is connected with the casing.
Based on the technical scheme, furthermore, the first planet carrier is provided with a first pin shaft, and the first pin shaft is connected with the first planet wheel through a first bearing.
Based on above-mentioned technical scheme, further, second planet carrier is equipped with the second round pin axle, connects through the second bearing between second round pin axle and the second planet wheel.
Based on above-mentioned technical scheme, further, drive arrangement still includes the supporting seat, and the supporting seat tip has the ring gear through bolted connection, and the ring gear meshes with first planet wheel, second planet wheel respectively, and the ring gear encloses the outside of establishing at the planet carrier mechanism.
Based on the above technical solution, furthermore, the driving device further includes a third bearing, and the end of the first sun gear is connected with the housing through the third bearing.
Compared with the prior art, the invention has the following beneficial effects:
the invention adopts a distributed driving structure, reduces the load bearing load of a single wheel, and reduces the purchase and use cost of the wearing parts; the power is saved, the design difficulty of a transmission part is reduced, and the stability of the mine car is improved; the braking energy recovery structure provided by the invention reduces the energy consumption and improves the economy of the whole vehicle; the structure for accurately distributing the torque of each driving unit increases the dynamic property of the vehicle; the invention adopts the small-tonnage design without a supporting seat, has multiple bridges and wide bodies, uses small-specification tires and reduces the cost; the large-tonnage design hub is provided with the supporting seat, so that the bearing stability is enhanced, and the efficiency is high; the integrated design, small, whole car overall arrangement is simple and easy, has solved the not enough problem of rigid body car axle weighing.
Drawings
FIG. 1 is a flow chart of a driving method of the present invention;
FIG. 2 is a block flow diagram of the drive system of the present invention;
FIG. 3 is a system configuration diagram according to embodiment 2 of the present invention;
FIG. 4 is a CAN network diagram according to embodiment 2 of the present invention;
FIG. 5 is an exemplary schematic diagram of the system of example 2 of the present invention under high and low pressure conditions;
FIG. 6 is a schematic structural diagram of a driving device according to the present invention;
reference numerals: 10. a housing; 20. a drive motor; 30. and (7) wheels.
Detailed Description
In order to make the purpose and technical solutions of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the embodiments.
It is to be understood that the terms "upper," "lower," and the like, are used herein to describe various elements of the invention, and are used in a generic and descriptive sense only and not for purposes of limitation.
Example 1
As shown in fig. 1, a distributed electric wheel driving method is implemented, and a current entire vehicle driving system includes six driving mechanisms, so that the rotating speed and torque of a motor need to be monitored in real time in a driving process, and the problems of entire vehicle slipping, incorrect steering and the like caused by errors in execution of wheel end torque are prevented.
The method specifically comprises the following steps:
step S1: starting a program, and judging the current state of the wheel edge driving system;
specifically, after the program is started, the system calculates the current required torque according to the current accelerator pedal opening and brake pedal opening and a two-dimensional table look-up algorithm, the rotating speed of the gearbox is taken as an abscissa, the output torque of the gearbox is taken as an ordinate, and the gearbox torque output capacities corresponding to different rotating speeds are different, so that a curve can be formed, the curve is similar to the curve of the external characteristic of the driving motor, and the current output torque requirement is obtained by multiplying the accelerator pedal opening percentage by the gearbox torque output capacity looked up at the current rotating speed; multiplying the opening percentage of the brake pedal by the gearbox torque braking capacity which is looked up under the current rotating speed to obtain the current braking torque demand; when the accelerator pedal and the brake pedal are both 0, the gearbox does not output torque at the moment, and is in a sliding state under the condition of vehicle speed, and is in a free state, namely in the sliding state under the condition of no vehicle speed. When the accelerator pedal is larger than zero, the accelerator pedal is in a driving state; when the brake pedal is less than zero, the brake pedal is in a braking state; different decision processes can be selected depending on different states.
Step S2: when the wheel edge system is in a driving state, judging the driving torque requirement; when the wheel side system is in a braking state, judging the braking torque requirement; when the wheel side system is in a sliding state, judging the sliding torque requirement;
and step S3: and according to the torque demand judgment in the driving, sliding and braking states, configuring a corresponding number of driving motors 20 to drive the whole vehicle.
The process for judging the driving torque demand comprises the following steps:
step 1: calculating a drive torque demand, the drive torque being positive;
step 2: judging whether to execute the driving torque according to the current state of charge (SOC): if SOC is less than or equal to SOC Low Executing that the driving torque is 0 and issuing an alarm that the battery level is low; if SOC > SOC Low Executing the required torque of the driving, and then carrying out the selection process of the number of the driving mechanisms in the next step;
and 3, step 3: selecting the number of driving mechanisms: if Trq Req <33%Trq max Two driving mechanisms of the middle axle are used for driving the whole vehicle, the driving torque is smaller at the moment, and the two driving mechanisms can complete the driving of the whole vehicle; if 33% Trq max ≤ Trq Req ≤66%Trq max When the four driving mechanisms of the rear axle drive the whole vehicle during use, the driving torque is medium, and the four driving mechanisms can drive the whole vehicle; if Trq Req >66%Trq max The six driving mechanisms of the front, middle and rear axles are used for driving the whole vehicle, the requirement on driving torque is the largest at the moment, and the driving of the whole vehicle can be completed only by the six driving mechanisms.
The process for judging the braking torque demand comprises the following steps:
step 11: calculating a braking torque demand, the braking torque being negative;
step 12: judging whether to execute braking torque according to the current state of charge (SOC) of the battery: if SOC > SOC max The battery power is too high, the driving motor 20 cannot generate power, so the execution braking torque is zero, and an alarm that the battery power is high is issued; if SOC is less than SOC max Executing the required torque of braking, and then carrying out the selection process of the number of the driving mechanisms in the next step;
step 13: selecting the number of driving mechanisms: if Trq Req >33%Trq min The two driving mechanisms of the middle axle are used for providing braking torque for the whole vehicle, the braking torque is smaller at the moment, and the two driving mechanisms can complete the braking of the whole vehicle; if 33% Trq min ≥Trq Req ≥66%Trq min After useThe four driving mechanisms of the axle provide braking torque for the whole vehicle, and the four driving mechanisms can complete the braking of the whole vehicle when the braking torque is medium; if Trq Req ＜66%Trq min Six driving mechanisms of the front, middle and rear axles are used for providing braking torque for the whole vehicle, the braking torque requirement is maximum at the moment, and the braking of the whole vehicle can be completed only by the six driving mechanisms.
Judging the sliding torque demand, and when the calculated sliding torque demand is confirmed to be 0 and the vehicle speed exists, the vehicle is in a sliding state; in the case of no vehicle speed, the vehicle is in a free state.
Example 2
Based on the distributed electric wheel driving method in embodiment 1, as shown in fig. 2, a distributed electric wheel driving system is implemented, each wheel driving device is connected with a driving motor 20, the driving motors 20 are connected with motor controllers, and information is transmitted between each motor controller through a CAN network; the power supply system also comprises a high-voltage cabinet, an engine, a generator and a battery, wherein the high-voltage cabinet is used for adjusting the power ratio of the battery to the generator.
The high-voltage board mainly plays a role in adjusting the power ratio of the battery and the generator, for example, the power demand for driving the whole vehicle is 400kW, but in the process of the current state, the electric power generated by the generator driven by the engine is only 300kW, and at the moment, 100kW of electric power can be taken from the battery through the high-voltage board, so that the driving power of the whole vehicle is met. The combined structure of the driving motor 20 and the MCU is to execute a specific torque according to a control command of the VCU of the entire vehicle to complete the driving function of the entire vehicle. When the braking energy of the whole vehicle is recovered, the driving motor 20 is in a power generation state, and the recovered electric power is completely charged into the battery through the high-voltage board and cannot go to other directions.
The working principle of the system is as follows: referring to fig. 3 to 5, the torque output by the driving motor 20 plays a role of increasing torque through the speed ratio function of the planetary gear train driving device, the multiple of increasing torque is the speed ratio multiple, the torque output by the driving motor 20 is executed according to an instruction sent by the VCU to the MCU, the MCU converts the torque instruction into current, and the driving motor 20 outputs a corresponding torque through an electromagnetic function. Specifically, the transmission relationship of each motor controller in the CAN network topology is that data transmitting and receiving conform to a J1939 communication protocol, a controller on the whole vehicle CAN network is a five-in-one controller, a controller MCU1 in the five-in-one controller is mainly used for controlling a generator, and an engine controller ECU and an instrument panel are also mounted on the whole vehicle CAN network. The power CAN network is provided with a motor controller MCU2, a motor controller MCU3, a motor controller MCU4, a motor controller MCU5, a motor controller MCU6 and a motor controller MCU7 which are mainly used for driving a wheel edge to drive a driving motor I, a driving motor II, a driving motor III, a driving motor IV, a driving motor V and a driving motor VI, and the battery controller BMS is mainly used for controlling a battery controller. One controller sends data, and all controllers in the same network can receive corresponding data. The VCU CAN mount two CAN networks at the same time, the communication between the power CAN network and the whole CAN network CAN be realized, the other CAN network CAN receive corresponding data through the data forwarding of the VCU, and otherwise, the data interaction between the networks cannot be completed.
In the high-voltage part, the engine drives the generator to operate, the generator generates electric energy after passing through the controller MCU1, the electric energy is supplied to the driving motor 20 for use or is used for charging a battery, the operation logic is the driving power requirement of the whole vehicle, and the battery is in a discharging state if the power requirement is greater than the output power of the generator; if the power demand is equal to the output power of the generator, the battery is in an uncharged state; the power demand is less than the output power of the generator, and the battery is in a charged state. The high voltage is always converted by the controller to drive the driving motor 20.
The VCU has the function of calculating the current required power according to the opening degree of an accelerator pedal for driving and the current vehicle speed, and the required power is in positive correlation change along with the opening degree of the accelerator pedal. And the VCU manages power and energy according to the control logic shown in fig. 4, and controls the power and torque of the driving motor 20, and the VCU controls the power and torque of the engine, the power and torque of the generator, and the engine drives the generator to generate electric power, so that the power multiplied by the efficiency of the engine is the power output by the generator. The VCU subtracts the electric power generated by the generator according to the calculated driving demand power of the whole vehicle, and the rest is the power which needs to be supplemented by the battery, wherein positive power is discharged, and negative power is charged.
Example 3
A distributed electric wheel-side driving device as shown in fig. 6 includes a driving mechanism, a planet carrier mechanism and a sun gear mechanism; the sun gear mechanism is arranged in the planet carrier mechanism; the drive mechanism is a drive motor 20. The planet carrier mechanism comprises a first planet carrier and a second planet carrier, and a planet wheel mechanism is arranged on the planet carrier mechanism and comprises a first planet wheel and a second planet wheel, and a sun wheel mechanism comprises a first sun wheel and a second sun wheel; the end part of the second planet carrier is connected with a shell of the driving mechanism, the second planet carrier is fixed on the shell, a second planet wheel is arranged on the second planet carrier, and a first planet wheel is arranged on the first planet carrier; the first sun gear penetrates through the second sun gear to be connected with an output interface of the driving mechanism through a spline, the second sun gear is meshed with the second planet gear, the end part of the first sun gear is meshed with the first planet gear, and the first planet carrier is connected with the second sun gear.
A shell 10 is arranged around the outside of the driving mechanism, and the side surface of the second planet carrier is connected with the shell 10 through a bolt. The first planet carrier is provided with a first pin shaft, and the first pin shaft is connected with the first planet wheel through a first bearing. The second planet carrier is provided with a second pin shaft, and the second pin shaft is connected with the second planet wheel through a second bearing. The driving device further comprises a supporting seat, the end part of the supporting seat is connected with a gear ring through a bolt, the gear ring is respectively meshed with the first planet wheel and the second planet wheel, and the gear ring is arranged outside the planet carrier mechanism in an enclosing mode. The drive arrangement further comprises a third bearing, by means of which the first sun wheel end is connected to the housing 10.
The working principle of the device is as follows: the first planet carrier and the second planet carrier are of a common-gear structure, the driving motor 20 is connected with a first sun gear on the first planet carrier at the outer side, the rotating speeds of the first sun gear and the first sun gear are consistent, and the first sun gear is meshed with the gear ring through a first planet gear arranged on the first planet carrier; the first planet carrier is connected with a second sun gear, the second sun gear is meshed with the gear ring through a second planet gear arranged on the second planet carrier, and the second planet carrier is connected with the inner ring of the bearing and is connected with a frame of the whole vehicle. When the driving motor 20 is in a forward rotation state, power and torque are input, and the torque of the driving motor 20 passes through the first sun gear, the first planet gear on the first planet carrier and then the gear ring; the other part of the torque passes through the first planet carrier to the second sun gear and then passes through the second planet gear to the gear ring, and the second planet carrier is connected with the frame, so that the whole body does not rotate. The large reduction ratio is achieved through the working mode, and when the driving motor 20 rotates forwards, the gear ring rotates backwards, so that when the driving motor 20 drives the first sun gear to rotate reversely, the end part of the wheel 30 of the whole vehicle rotates forwards at a low rotating speed, and the driving motor 20 basically has the same forward and reverse characteristics, so that the whole vehicle can be driven to run well. Specifically, a first sun gear, a first planet carrier and a gear ring form a first planet row, and a second sun gear, a second planet carrier and the gear ring form a second planet row, wherein the first planet row and the second planet row share the gear ring, so that the rotation speeds of the first planet row and the second planet row are ensured to be the same in the movement process. And the first sun gear passes through the second sun gear to be connected with the driving motor, and the first planet carrier of the first planet row is connected with the second sun gear of the second planet row.
Finally, it should be noted that the above-mentioned contents are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, and that the simple modifications or equivalent substitutions of the technical solutions of the present invention by those of ordinary skill in the art can be made without departing from the spirit and scope of the technical solutions of the present invention.
Claims (9)
1. A distributed electric wheel driving method is characterized by comprising the following steps:
step S1: starting a program, and judging the current state of the wheel edge driving system;
step S2: when the wheel edge system is in a driving state, judging the driving torque requirement; when the wheel side system is in a braking state, judging the braking torque requirement; when the wheel side system is in a sliding state, a sliding torque requirement judgment process is carried out;
and step S3: and according to the torque demand judgment in the driving, sliding and braking states, configuring a corresponding number of driving mechanisms to drive the whole vehicle.
2. The distributed electric wheel side driving method according to claim 1, wherein the step S2 of determining the driving torque requirement includes the following steps:
step 1: calculating a drive torque request;
step 2: judging whether to execute the driving torque according to the current state of charge (SOC) of the battery: if SOC is less than or equal to SOC Low Executing that the driving torque is 0 and issuing an alarm that the battery level is low; if SOC > SOC Low Executing the required torque of the driving;
and step 3: selecting the number of driving mechanisms: if Trq Req <33%Trq max Then two driving mechanisms are arranged to complete the driving of the whole vehicle; if 33% Trq max ≤Trq Req ≤66%Trq max Four driving mechanisms are arranged to complete the driving of the whole vehicle; if Trq Req >66%Trq max Six driving mechanisms are arranged to complete the driving of the whole vehicle; wherein, trq Req Representative of the torque demand, trq max Representing the maximum torque.
3. The distributed electric wheel-side driving method according to claim 1, wherein in step S2, the process of determining the braking torque demand comprises the following steps:
step 11: calculating a braking torque demand;
step 12: judging whether to execute braking torque according to the current state of charge (SOC) of the battery: if SOC > SOC max Executing the braking torque to be zero and giving an alarm that the battery level is high; if SOC is less than SOC max The required torque for braking is executed;
step 13: selecting the number of driving mechanisms: trq (Trq) Req >33%Trq min Then two driving mechanisms are arranged to complete the braking of the whole vehicle; if 33% Trq min ≥Trq Req ≥66%Trq min Four driving mechanisms are arranged to complete the braking of the whole vehicle; if Trq Req ＜66%Trq min And six driving mechanisms are arranged to complete the braking of the whole vehicle.
4. The distributed electric wheel driving method according to claim 1, wherein in step S2, a determination process of the coasting torque requirement is performed, and after it is determined that the calculated coasting torque requirement is 0, the vehicle is in a coasting state when the vehicle speed is available; in the case of no vehicle speed, the vehicle is in a free state.
5. A distributed electric wheel edge driving system using the distributed electric wheel edge driving method according to any one of claims 1 to 4, comprising distributed electric wheel edge driving devices, wherein each wheel edge driving device is connected with a driving motor, the driving motors are connected with motor controllers, and information is transmitted between each motor controller through a CAN network;
the high-voltage board adjusts the power ratio of the battery to the generator;
the controller on the CAN network has a five-in-one controller, the five-in-one controller comprises a controller MCU1, the engine drives the generator to operate, and the generator supplies electric energy generated after passing through the controller MCU1 to the driving motor for use.
6. A distributed electric wheel-side driving apparatus for the distributed electric wheel-side driving system according to claim 5, characterized by comprising a driving mechanism, a planet carrier mechanism and a sun gear mechanism;
the sun wheel mechanism is arranged in the planet carrier mechanism;
the planet carrier mechanism comprises a first planet carrier and a second planet carrier, a planet wheel mechanism is arranged on the planet carrier mechanism, the planet wheel mechanism comprises a first planet wheel and a second planet wheel, and the sun wheel mechanism comprises a first sun wheel and a second sun wheel;
the end part of the second planet carrier is connected with a shell of the driving mechanism, a second planet wheel is arranged on the second planet carrier, and a first planet wheel is arranged on the first planet carrier; the first sun gear penetrates through the second sun gear to be connected with an output interface of the driving mechanism, the second sun gear is meshed with the second planet gear, the end part of the first sun gear is meshed with the first planet gear, and the first planet carrier is connected with the second sun gear;
the support is characterized by further comprising a support seat and a third bearing, wherein the end portion of the support seat is connected with a gear ring through a bolt, the gear ring is meshed with the first planet wheel and the second planet wheel respectively, the gear ring is arranged outside the planet carrier mechanism in an enclosing mode, and the end portion of the first sun wheel is connected with the shell through the third bearing.
7. The distributed electric wheel-side driving device as claimed in claim 6, wherein a housing is arranged around the driving mechanism, and the side surface of the second planet carrier is connected with the housing through a bolt.
8. The distributed electric wheel-side driving device as claimed in claim 6, wherein the first planet carrier is provided with a first pin shaft, and the first pin shaft and the first planet wheel are connected through a first bearing.
9. The distributed electric wheel-side driving device as claimed in claim 6, wherein the second planet carrier is provided with a second pin, and the second pin is connected with the second planet wheel through a second bearing.
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| CN202310139891.8A CN115923536A (en) | 2023-02-21 | 2023-02-21 | Distributed electric wheel-side driving device, system and method |
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| CN202310139891.8A CN115923536A (en) | 2023-02-21 | 2023-02-21 | Distributed electric wheel-side driving device, system and method |
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