Electric vehicle braking energy distribution method
A technology of braking energy and distribution method, which is applied in the direction of electric vehicles, electric braking systems, vehicle components, etc., can solve the problems of driver discomfort, insufficient recycling efficiency, comfort and safety, etc., and achieve a good pace of development, Avoid the problem of uneven braking and ensure the effect of safety and comfort
Inactive Publication Date: 2021-03-19
NINGBO TUOPU GROUP CO LTD
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] At present, the braking energy recovery methods are divided into series and parallel. The parallel recovery method superimposes the motor recovery braking force on the basis of the mechanical recovery braking force, which will bring discomfort to the driver.
Although the serial recovery method will not cause frequent changes in the driver's braking, there is still a lot of room for improvement in terms of recovery efficiency, safety and comfort.
And at present, the research is mainly related to front-axle drive or rear-axle drive models, but for front and rear dual-motor models and four-motor models, the braking energy distribution method still needs to be improved, the braking energy recovery efficiency is insufficient and the braking The comfort and safety of vehicles in the recycling process are areas that need to be improved
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0031] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.
[0032] Embodiments of the present invention relate to a method for distributing braking energy of an electric vehicle, such as figure 1 shown, including:
[0033] Step (1): Obtain the current target braking demand of the vehicle; obtain the maximum recovery torque capacity value of each wheel motor, the actual recovery torque capacity value of each wheel motor, and the sliding recovery torque capacity value of each wheel motor...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to an electric vehicle braking energy distribution method. The method comprises the following steps: (1) obtaining the current target braking requirement of a vehicle; (2) determining a front and rear axle braking force distribution curve, and obtaining front wheel braking force and rear wheel braking force according to the front and rear axle braking force distribution curve; (3) establishing a conversion relationship between the pressure of the main cylinder and the recovery torque of each wheel motor; (4) converting the pressure of the main cylinder into hydraulic mechanical braking torque; and (5) according to the current target braking requirement and the braking energy recovery stage state, adjusting the relation between the recovery torque of each wheel motor and the hydraulic mechanical braking torque. Efficient recovery of braking energy can be achieved, and smoothness of the braking process is guaranteed.
Description
technical field [0001] The invention relates to the technical field of electric vehicle braking energy recovery, in particular to a braking energy distribution method for electric vehicles. Background technique [0002] Since the birth of electric vehicles, their battery life has always been the focus of attention. In addition to improving energy storage and driving methods, braking energy recovery is one of the important technologies of modern electric vehicles and hybrid vehicles, and it is also an important feature of them. Braking energy recovery is to convert the kinetic energy generated by the useless, unnecessary or harmful inertial rotation of the electric vehicle motor into electrical energy and feed it back to the battery. At the same time, a braking torque is generated to make the motor quickly stop the inertial rotation. This overall process is also called regenerative braking. Most electric vehicles are now equipped with similar devices to save braking energy,...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): B60L7/18B60L7/26
CPCB60L7/18B60L7/26
Inventor 夏玲唐文蒋开洪郑鸿云
Owner NINGBO TUOPU GROUP CO LTD