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Hydraulic mechanical drive device for electric vehicle

A technology of hydraulic machinery and transmission devices, which is applied to multi-ratio transmissions, transmissions, fluid transmissions, etc., and can solve problems such as cost increase

Inactive Publication Date: 2012-06-20
TIANJIN ENG MACHINERY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of using high-energy batteries such as lithium batteries has increased a lot

Method used

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  • Hydraulic mechanical drive device for electric vehicle
  • Hydraulic mechanical drive device for electric vehicle
  • Hydraulic mechanical drive device for electric vehicle

Examples

Experimental program
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Embodiment 1

[0021] A hydromechanical transmission device for an electric vehicle, comprising a battery pack 1, a motor 3, a motor controller 2, a comprehensive hydraulic torque converter with a lock-up clutch 4, and a power shift gearbox 5, and the battery pack 1 supplies power to the motor 3. The motor controller 2 controls the motor 3 to drive the integrated torque converter 4 with a lock-up clutch, the integrated torque converter 4 with a lock-up clutch is connected to the power shift gearbox 5, and the power shift gearbox 5 is connected to The driving axle carries out the hydromechanical transmission of the vehicle to realize the walking of the vehicle.

[0022] Typically, motors start on load with very high currents. This necessarily leads to an increase in the number of battery packs. Normal operation does not require extra batteries, which again becomes a burden on the car, reducing its operating capacity; the cost of using the battery also increases.

[0023] The input torque of...

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PUM

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Abstract

The invention relates to a hydraulic mechanical drive device for an electric vehicle, which belongs to the technical field of the electric vehicle. The hydraulic mechanical drive device for the electric vehicle is characterized by comprising a storage battery, a motor, a motor controller, a hydraulic torque converter and a power gear-shifting gear box, wherein the storage battery is used for supplying power to the motor; the motor controller is used for controlling the motor to drive the hydraulic torque converter; and the hydraulic torque converter is connected with the power gear-shifting gear box to perform vehicle hydraulic mechanical drive. The hydraulic mechanical drive device for the electric vehicle has the advantages that the starting performance of the vehicle is good; zero-torque starting is adopted by the motor; the starting current is small; the drive efficiency is high; energy is saved; the weight of the vehicle is light; and the effective carrying capacity is high, and the like.

Description

technical field [0001] The invention belongs to the technical field of electric vehicles, in particular to a hydraulic mechanical transmission device for electric vehicles. Background technique [0002] At present, the application of low-carbon, environmentally friendly new energy power technology in vehicle transmission is in the ascendant, and the development of electric vehicles has become a trend and direction. It is very important to improve battery life, charging capacity and cost of use. The starting current of the known motor is very high, such as: the starting current of the AC motor is 4 to 7 times the rated current, and the starting current of the DC motor is 8 to 15 times the rated current. This necessarily leads to an increase in the number of battery packs. Normal operation does not require redundant batteries, which in turn becomes a burden on the car, reducing its operating capacity. Adopt high-energy battery such as: its cost of lithium battery has increa...

Claims

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Application Information

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IPC IPC(8): B60K17/10B60K17/12
CPCF16H47/06F16H2200/0021
Inventor 曹全星崔国敏王爱洪
Owner TIANJIN ENG MACHINERY INST
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