Control system, method and vehicle for slowing down battery temperature rise
A technology for controlling system and battery temperature, which is applied in the direction of electric vehicles, control drives, control devices, etc. It can solve the problems that the power and economy of the whole vehicle cannot be reflected, the temperature of lithium batteries rises sharply, and user complaints, etc., to ensure energy The effect of using economy, taking into account system safety, and strong fuel consumption experience
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0043] see figure 1 , image 3 , Figure 4 , Figure 5 and Figure 7 , the control system for slowing down the temperature rise of the battery includes an engine 1, a motor 2 connected in rotation with the engine, a battery 3 electrically connected with the motor, and a controller 4 that can control the torque of the motor; in the case of energy recovery, the engine is mechanically connected to the motor in rotation, The controller controls the motor to charge the battery according to the target torque of the motor.
[0044] This case involves energy recovery. Energy recovery refers to the conversion of the kinetic energy consumed by the car on the wheels through the braking energy recovery system (both: the transmission system and the motor) into the electrical energy storage of the battery when the vehicle is coasting or braking, and then used for drive the vehicle. Energy recovery is divided into coasting recovery condition and braking recovery condition. When the bra...
Embodiment 2
[0058] For coasting energy recovery conditions:
[0059] see figure 1 , image 3 , Figure 4 , Figure 5 and Figure 7 , the control system for slowing down the temperature rise of the battery provided by this embodiment does not detect that the driver's brake signal is issued (such as: the brake pedal is not pressed), and does not detect that the driver's accelerator signal is issued (such as: The accelerator pedal is not pressed), and the battery temperature is monitored in real time. When the battery temperature exceeds the threshold value and the vehicle is in a specific working condition (high speed, high gear), at this time, the assistance is less under high speed conditions, and the braking and coasting energy recovery needs Less, there is no need to collect too much braking and coasting energy. If the target torque of the first motor (original target recovery torque) continues to work on the battery, the battery will quickly overheat. Therefore, it can be considere...
Embodiment 3
[0068] see figure 2 , image 3 , Figure 4 , Figure 5 and Figure 7 , the control system for slowing down the temperature rise of the battery includes an engine 1, a motor 2 that is rotationally connected to the engine, a battery 3 that is electrically connected to the motor, and a controller 4 that can control the torque of the motor; the system can perform two actions of charging and discharging the battery ; The charging condition includes the braking energy recovery working condition and the coasting energy recovery working condition, which are the same as those in Embodiment 1 and Embodiment 2, and will not be repeated here.
[0069] see image 3 , discharge situation, when the accelerator pedal is stepped on, the battery outputs power to the motor, the controller controls the motor to provide the engine with the second motor target torque T2 (original target motor assist torque) to provide assist torque to the engine, the motor rotates at the second speed N2 and P...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More