CN211731044U - Wheel-side driving system with transmission - Google Patents

Abstract

The utility model provides a take wheel limit actuating system of derailleur, including four actuating mechanism and four drive wheels, actuating mechanism includes driving motor and derailleur, and the derailleur has the variable speed function of shifting, and driving motor transmits power to the drive wheel through the derailleur to the drive vehicle traveles. The utility model discloses a four actuating system's coordination independent control can realize that multiple drive model switches, can satisfy multiple operating mode and travel. In the snow mode, the torque output of the motor can be effectively adjusted, and the driving operation safety is improved; in the normal mode, on the premise of meeting the dynamic property of the whole vehicle, the economy of the whole vehicle can be optimal through the switching of the motor state and the gear of the transmission; the torque distribution design of the four driving systems can improve the operation stability of the whole vehicle; the unpowered gear shifting can be realized, and the smoothness of the vehicle is improved.

Description

A wheel drive system with a transmission

technical field

The utility model relates to the technical field of automobile drive systems, in particular to a wheel-side drive system with a transmission.

Background technique

At present, there are two main types of four-wheel drive vehicles on the market: one is a wheel drive vehicle, which adopts an electronic differential; the other is a central direct drive configuration for the front and rear axles, and the differential speed is realized through a differential. Among them, the wheel drive vehicles all use the drive motor matching reducer scheme, the system matching adaptability is not high, and the working mode is relatively simple, which cannot achieve the best matching of the vehicle power and economy; Because the differential speed is realized by the differential, the torque of the left and right wheels cannot be distributed independently, which is not conducive to the improvement of the vehicle handling stability. In addition, on low-adhesion road surfaces such as snow conditions, the above two types of vehicles cannot effectively adjust the output of the required torque, and the driving operation safety is low. To this end, we provide a wheel drive system with a transmission and a control method thereof.

SUMMARY OF THE INVENTION

The utility model provides a wheel-side drive system with a transmission, so as to solve the problem that the existing wheel-side drive system has a low system adaptability, a single working mode, and cannot achieve the optimal economy of the whole vehicle, as well as driving on a low-adhesion road surface. Disadvantages such as low operational security.

The utility model adopts the following technical solutions:

A wheel-side drive system with a transmission includes four driving wheels and four driving mechanisms, each driving wheel is provided with a corresponding driving mechanism, and each driving mechanism includes a driving motor and a transmission, and the driving motor is The output end is mechanically connected to the drive wheel through the transmission, each of the drive motors is electrically connected with a motor controller, each of the transmissions is electrically connected with a transmission controller, and four of the motor controllers are electrically connected. and the four transmission controllers are all connected in communication with the vehicle controller.

Further, the transmission is a transmission with two or more gears.

Preferably, the motor controller and the transmission controller are respectively connected to the vehicle controller through a CAN bus.

As can be seen from the above description of the present utility model, compared with the prior art, the present utility model has the following advantages:

In the driving system of the utility model, each driving wheel is respectively provided with a driving mechanism, and each driving mechanism includes a driving motor and a transmission. driving in various conditions. In the snow mode, the control vehicle is in the four-wheel drive mode, and the four transmissions are in the highest gear, which can effectively adjust the motor torque output, reduce the driver's operating burden, and improve the safety of driving operations, especially suitable for driving in alpine areas; while in the normal mode On the premise of satisfying the dynamic performance of the whole vehicle, through the state of the driving motor and the gear switch of the transmission, the economy of the whole vehicle can be optimized. Through the torque distribution design of the four driving mechanisms, the handling stability of the whole vehicle can be improved, the shifting without power interruption can be realized, and the smoothness of the vehicle can be improved.

Description of drawings

FIG. 1 is a schematic structural diagram of the drive system of the present invention.

FIG. 2 is a schematic diagram of the working mode of the drive system of the present invention.

Detailed ways

The specific embodiments of the present invention will be described below with reference to the accompanying drawings. In order to fully understand the present invention, many details are described below, but for those skilled in the art, the present invention can be practiced without these details. Well-known components, methods, and procedures are not described in detail below.

A wheel-side drive system with a transmission, referring to FIG. 1, includes four driving wheels 1 and four driving mechanisms. The four driving wheels 1 are symmetrically arranged on the front, rear, left and right sides of the vehicle chassis. 1 is correspondingly provided with a driving mechanism, each driving mechanism includes a driving motor 21 and a transmission 22, the output end of the driving motor 21 is mechanically connected with the driving wheel 1 through the transmission 22, and the driving motor transmits power to the driving wheel 1 through the transmission. , thereby driving the vehicle, and all four drive wheels work in this way.

Each of the drive motors 21 is electrically connected to a motor controller, and each of the transmissions 22 is electrically connected to a transmission controller. The four motor controllers and the four transmission controllers communicate with the vehicle controller 3 . connection, the communication connection is preferably a CAN bus connection.

The above-mentioned transmission 22 has a shifting function of two or more speeds.

When the road adhesion coefficient obtained by the vehicle controller 3 is lower than μ (μ is preferably 0.3) or the snow mode manual button is turned on, the snow mode is turned on, the vehicle is controlled to be in the four-wheel drive mode, and the four transmissions are in the highest gear. Adjust the motor torque output, reduce the driver's operation burden, improve the driving operation safety, especially suitable for driving in alpine areas; when the road adhesion coefficient is greater than μ and the snow mode manual button is turned off, the control vehicle is in the normal mode, and the power of the whole vehicle is satisfied. Under the premise of stability, through the state of the driving motor and the shifting of the transmission gear, the economy of the whole vehicle can be optimized.

In the above-mentioned normal mode, a two-speed transmission is specifically described. Referring to Fig. 2, when the vehicle speed V is at a low speed and the required torque Trep is small, the two-wheel drive and first/second gear modes can be selected; when the vehicle speed V is high and the required torque Trep is small, the two-wheel drive and second gear modes are selected. mode; when the vehicle speed V is at a low speed and the required torque Trep is moderate, the two-wheel drive and first gear modes are selected; when the vehicle speed V is high and the required torque Trep is moderate, the four-wheel drive and second gear modes are selected; when the vehicle speed V is at a moderate When the speed is low and the required torque Trep is large, the four-wheel drive and first/second gear modes are selected; when the vehicle speed V is at a low speed and the required torque Trep is extremely large, the four-wheel drive and first-speed modes are selected.

The above are only specific embodiments of the present utility model, but the design concept of the present utility model is not limited to this, and any non-substantial changes to the present utility model by using this concept shall be regarded as acts that violate the protection scope of the present utility model.

Claims (3)

1. A wheel driving system with a transmission is characterized in that: the four-wheel-drive-type vehicle-mounted driving device comprises four driving wheels and four driving mechanisms, wherein one driving mechanism is correspondingly arranged on each driving wheel, each driving mechanism comprises a driving motor and a transmission, the output end of each driving motor is connected with the driving wheels in a mechanical mode through the transmission, each driving motor is electrically connected with a motor controller in a corresponding mode, each transmission is electrically connected with a transmission controller in a corresponding mode, and the motor controllers and the transmission controllers are in communication connection with a vehicle control unit.

2. The hub driving system with a transmission according to claim 1, wherein: the speed changer is a speed changer with more than two gears.

3. The hub driving system with a transmission according to claim 1, wherein: the motor controller and the transmission controller are respectively connected with the whole vehicle controller through a CAN bus.

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