A pure electric transmission device, gearbox and vehicle
A speed change device and pure electric technology, applied in control devices, vehicle components, transportation and packaging, etc., can solve the problems that new energy vehicles cannot realize the transformation between multiple gears, so as to improve the experience and ensure the power Effect
Active Publication Date: 2022-07-15
YIWU GEELY AUTOMATIC TRANSMISSION CO LTD +1
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Problems solved by technology
[0004] In view of the above-mentioned problems in the prior art, the purpose of the present invention is to provide a pure electric transmission device, a gearbox and a vehicle, which can solve the problem that new energy vehicles in the prior art cannot realize the transformation between multiple gears
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Embodiment 1
[0039] The existing new energy reducer usually has only one gear, and the speed ratio is fixed. This requires that the drive motor can provide sufficient driving torque when the vehicle starts and other conditions, and can provide sufficient rotational speed when the vehicle is running at high speed. It is difficult for current motors to meet both low-speed torque requirements and high-speed rotational speed requirements. Some new energy reducers realize two gears through parts such as shift forks and synchronizers, but there are interruptions in the power transmission process, which affects the driving experience.
[0040] In order to solve the above problem, the embodiments of the present specification provide a pure electric transmission device, which can realize the switching of two gears, and there is no interruption in the power transmission process.
[0041] Specifically, as shown in FIG. 1, the device includes a drive motor 1, a generator 2, a deceleration assembly 3 ...
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The invention discloses a pure power transmission device, a gearbox and a vehicle. The device includes a drive motor, a generator, a deceleration assembly, a differential, a planetary assembly, a first brake, a second brake, a first clutch and a second clutch; the generator is connected with the differential through the deceleration assembly, and the drive motor is connected with the planetary assembly; the first brake and the second brake are both connected with the planetary assembly; the first clutch is connected with the first brake through the planetary assembly, and the first brake is connected with the planetary assembly; The second clutch is connected to the second brake; the first clutch and the second clutch are both connected to the deceleration assembly; by controlling the closing of the first brake or the second brake to achieve different working modes or different gear power outputs, the present invention can Different gear ratios are converted to achieve switching between two speed ratios, using two one-way clutches to assist power transmission, and to achieve reverse gear, which improves the driving experience.
Description
technical field [0001] The invention relates to the field of new energy vehicle power, in particular to a pure electric speed change device, a gearbox and a vehicle. Background technique [0002] The promotion of pure electric new energy vehicles is based on three-electrical technology (motor, battery, electronic control), but the matching of the transmission system still affects the performance of the whole vehicle to a large extent, because although the optimal power coverage of the motor is far Beyond the traditional internal combustion engine, there is no need for a multi-speed gearbox, but in practical applications, it is still difficult to ensure the power performance of pure electric vehicles at low and high speeds at the same time. [0003] At present, most pure electric new energy vehicles use single-stage gearboxes. The power from the drive motor to the wheels can only be transmitted through a fixed speed ratio. This requires that the drive motor can provide enough...
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IPC IPC(8): B60K17/02B60K17/04B60K17/16
CPCB60K17/02B60K17/046B60K17/165
Inventor 文俊赵玉婷许正功林霄喆
Owner YIWU GEELY AUTOMATIC TRANSMISSION CO LTD