CAN-communication-based double-battery balancer with reverse charging function and control method
A CAN communication and reverse charging technology, which is applied in battery/fuel cell control devices, electric vehicle charging technology, electric vehicles, etc., can solve the problems of inability to freely switch charging, energy waste, mutual charging, etc., to achieve convenient switching, The effect of improving the utilization rate and saving energy
Pending Publication Date: 2021-01-15
南京迅之蜂智能科技有限公司
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[0003] In the prior art, electric bicycles generally use electric brakes when braking, that is, brakes are achieved by braking the motor, and a higher voltage will be generated during the braking process of the motor. This is not the case in the prior art. be utilized, thus resulting in a waste of energy
In addition, in order to extend the cruising range of electric vehicles, especially electric bicycles, some electric vehicles are equipped with two sets of batteries, and electric vehicles with two sets of batteries still have the problem of not being able to freely switch between charging and mutual charging
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[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0030] It should be noted that when a component is said to be "fixed" to another component, it can be directly on the other component or there can also be an intervening component. When a component is said to be "connected" to another component, it may be directly connected to the other component or there may be intervening components at the same time. When a component is said to be "set on" another component, it may be set directly on the other component or t...
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The invention relates to the technical field of electric vehicle charging, and discloses a CAN-communication-based double-battery balancer with reverse charging and a control method; and the method comprises the steps: step 1, searching for CAN communication after an MCU is initialized, judging whether a CAN communication instruction exists or not, if so, carrying out the mode switching of the MCUaccording to an operation instruction, and if not, carrying out the step 2; and step 2, enabling the MCU to enter an automatic balance mode, and judging whether the output voltage is greater than aninput voltage or not according to the input and output currents and voltages of the two paths of batteries detected in real time; if not, entering a reverse charging mode, and charging the double batteries by electric energy generated when the motor of the electric vehicle is braked; and if not, entering a discharging mode and discharging the double batteries to charge the electric vehicle. According to the scheme, the high voltage generated when the motor of the electric vehicle is braked can be absorbed by the battery, so that reverse charging of the battery is realized, the utilization rateof electric energy is increased, and energy is saved.
Description
technical field [0001] The invention relates to the technical field of electric vehicle charging, in particular to a dual-battery balancer with reverse charging based on CAN communication and a control method. Background technique [0002] In recent years, with the rapid development of society, energy issues and environmental issues have become more and more apparent. Environmentally-friendly vehicles represented by electric vehicles have attracted more and more attention. An electric vehicle is a vehicle that uses batteries as its energy source and converts electrical energy into mechanical kinetic energy through controllers, motors and other components. Since lithium-based batteries have the advantages of high efficiency and high battery life compared with traditional batteries (such as lead-acid batteries), currently the batteries used in electric vehicles are mainly lithium-based batteries. [0003] In the prior art, electric bicycles generally use electric brakes when ...
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IPC IPC(8): B60L58/22
CPCB60L58/22Y02T10/70Y02T90/16
Inventor 霍俊郭则宇
Owner 南京迅之蜂智能科技有限公司