Electric vehicle regenerated energy controller

Abstract

The invention relates to a regenerative energy controller for an electric vehicle, which includes a main control chip, which respectively receives signals from a brake handle controller, an automatic control and a manual controller, an overcurrent and overvoltage protection circuit, and a voltage stabilization circuit, and is characterized in that it also includes: Two-way switch circuit, which is controlled by the main control chip, connected to the constant voltage and constant current charging circuit and boost circuit, as well as the battery and the boost circuit; boost circuit, which is controlled by the main control chip, connected to the motor controller and the switch circuit; The output control signal of the control chip is respectively connected to the bidirectional switch circuit and the boost circuit. After adopting the booster circuit, it can be artificially adjusted to a wide range of voltage from 10-25 volts to effectively use regenerative power to charge the battery. As long as the circuit detects that the vehicle has a red light, turns, or brakes when it is foreseen to stop, it can drive at high speed. When the vehicle is in a downhill state, the circuit is automatically converted into a charging state, which not only makes full use of the regenerative power, but also better achieves the braking effect on the wheels.

Description

technical field [0001] The invention relates to an electric vehicle energy regeneration control device, in particular to a control device for controlling power regeneration during the operation of various electric vehicles. Background technique [0002] Since electric energy is a clean and environmentally friendly energy source, more and more vehicles are driven by electricity, but the operating efficiency of electric vehicles is generally relatively low. Many inventors have done a lot of research on this. Some of them use generator sets to "recover" excess kinetic energy and convert it into electrical energy to recharge the battery. This design has a complex structure and low recovery efficiency; some also use the reverse current generated by the motor to brake and idle to charge the battery. For example, the Chinese patent (Patent No. 02 1 05766.4) "Operating Device for Electric Bicycle" is a control device that utilizes reverse current charging of the motor. However, th...

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Problems solved by technology

However, the device can charge the battery only when the reverse voltage generated is greater than the battery voltage, and in this state, the battery can only be charged when driving on a good road or with a certain slope. When using a 24-volt battery, The driving speed can only be partially utilized within the range of 18-25 kilometers, and the batteries used by most domestic manufacturers are 36 volts. After testing, when the electric bicycle is used as a generator, the wheel speed must be greater than 35 kilometers, and the motor can It emits a voltage of more than 36 volts to charge the storage battery, which shows that this patented technology has almost no practical value in China

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