A speed-regulating controller for children's electric vehicles

Abstract

The invention relates to a novel speed adjusting controller for a children electromobile. The novel speed adjusting controller comprises a pulse width modulation module, a power interface module, a motor interface module, a speed adjusting interface module, a charging brake interface module and a field-effect tube module. The output end of the pulse width modulation module is connected with the field-effect tube module which is connected with the motor interface module through a protective relay module, the voltage feedback end of the pulse width modulation module is connected with the speed adjusting interface module through a speed adjusting control module, the power end of the pulse width modulation module is connected with the power interface module, and the voltage feedback end of the pulse width modulation module is further connected with the charging brake interface module through a charging brake control rotation stopping module. According to the novel speed adjusting controller, the modules are organically integrated, the various functions such as duty ratio adjustment, speed adjusting control signal supplementing and correcting, temperature compensation, undervoltage control and galloping protection are achieved, the control process of the children electromobile is safe, safe riding of children is guaranteed, and the service life is prolonged.

Description

technical field [0001] The invention belongs to the technical field of children's electric vehicle control, in particular to a children's electric vehicle speed control controller. Background technique [0002] Children's electric vehicles are mainly divided into electric vehicles, electric motorcycles, electric construction vehicles, etc., which can be ridden by children, and then use the power output from the battery to drive the motor installed in it to drive forward, backward or turn. , which is simple in structure and easy to operate, and is a popular electric toy for children. Compared with adult electric vehicles, the control of children's electric vehicles is relatively simple, so the control unit used is also relatively simple. In the existing control unit, the acceleration and deceleration signals are received by the speed control interface module, and then input to the pulse width modulation. In the module, the MOSFET is controlled by the pulse width modulation m...

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Problems solved by technology

[0003] The above-mentioned control unit has the following problems in actual use: 1. Due to its own design problems, the duty cycle of the pulse width modulation module can only reach 97%, which is prone to electromagnetic interference; 2. The output speed of the pulse width modulation module The control signal is not good, which affects the acceleration rate; 3. The control unit is affected by the ambient temperature, and its control parameters will change, which affects the control accuracy; 4. The battery will continue to maintain the maximum current output in the process of reaching the undervoltage value. The service life of the battery has a great influence; 5. It is unreliable to judge whether the duty cycle of the motor voltage is 100% when the electric vehicle is flying; 6. When the field effect tube breaks down, the electric vehicle will immediately break down Electricity, so that the electric car will stop quickly, this way of handling is more dangerous

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