Novel intelligent electric machine battery control system

Abstract

The invention discloses a new intelligent motor battery control system. Based on the former connection of the storage battery, the motor and the controller of electric truck / battery motor vehicle / electric bicycle, a management system is added for the storage battery, and the motor is internally provided with a state monitoring and communication control module; at the same time, the controller is also additionally provided with a storage battery management system and a motor communication control module. The structure, integrating the storage battery, the motor and the controller, takes advantages of the best control proposal of the control to maximum the service life of the storage battery, providing most electric energy discharging for once; meanwhile, the control proposal, which is designed according to the motor characteristics, promises the motor to optimize the operation on the high efficiency platform. Without changing to the vehicle structure of the former electric truck / battery motor vehicle / electric bicycle, the system can conveniently and efficiently combine the storage battery, the motor and the controller, thereby improving the energy utilization efficiency of the electric truck / battery motor vehicle / electric bicycle; moreover, with characteristic of extensive application, and as the rising demand to the electric vehicles nationwide, bringing great yearly demand, the system possesses extremely large social and economic benefits.

Description

1. Technical field [0001] The present invention relates to the control system of DC brushed motor, DC brushless motor, AC synchronous motor and other motors and storage batteries such as lead-acid storage battery, nickel hydrogen battery and lithium ion battery. The motor is used for electric bicycles, electric motorcycles, or electric The driving device of the automobile, the battery is used for the power supply device of the electric bicycle, the electric motorcycle, and the electric automobile. 2. Background technology [0002] Usually, the battery supplies power to the motor and the controller, and the battery includes power source devices such as lead-acid batteries, nickel-metal hydride batteries, lithium-ion batteries and other batteries; the motor includes DC brushed motors, DC brushless motors, and AC synchronous motors. and other drive devices; the controller includes a control unit that controls the motor to stop and run according to the command value output. [...

AI Technical Summary

Problems solved by technology

[0006] (1) The energy state of the battery cannot be displayed accurately, and the life of the battery may be seriously shortened due to high-current discharge, over-discharge and over-charge;

[0007] (2) The efficiency state and heating condition of the motor cannot be indicated in real time, resulting in the failure of the motor to operate in the best condition;

[0008] (3) The controller cannot give full play to its function

[0010] (1) The discharge capacity of the battery is closely related to its life. Long-term high-current discharge will reduce the capacity that the battery can use each time, thereby directly reducing its service life and undoubtedly increasing the cost of use.

At the same time, nickel-hydrogen batteries and lithium-ion batteries themselves are relatively expensive, so it is necessary to protect the battery as much as possible from shortening the life of the battery due to use.

[0011] (2) When the motor works in a low-efficiency condition, it will cause more heat and increase the temperature of the motor. For the position signal of the brushless DC motor, the magnetic performance of the magnet is a serious threat. At the same time, when the energy is exhausted Under the circumstances, energy saving and high efficiency are imminent

[0012] (3) On the premise of reducing the cost as much as possible, in order to ensure the excellent overall performance of the entire control system, it must be solved in the control of the power tube of the controller, power tube drive and power supply IC. However, due to the cost Restrictions, currently the chip used in the electric bicycle control system is a single-chip microcomputer, and the resources are not sufficient when performing advanced control algorithms

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