Control system, method for slowing down temperature rise of battery, and automobile
A technology for controlling system and battery temperature, applied in electric vehicles, control drives, control devices, etc., can solve problems such as the inability to reflect the power and economy of the whole vehicle, user complaints, and sudden increase in lithium battery temperature, so as to ensure energy efficiency. Take advantage of the effects of economy, fuel consumption experience, and system safety
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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 to the engine in rotation, a battery 3 electrically connected to the motor, and a controller 4 capable of controlling the torque of the motor; in the state of energy recovery, the engine and the motor are mechanically connected in rotation, The controller controls the motor to charge the battery according to the target torque of the motor.
[0044] This situation involves energy recovery. Energy recovery means that when the vehicle is coasting or braking, the kinetic energy consumed by the car on the wheels is converted (both: the transmission system and the motor) into the electric energy storage of the battery through the braking energy recovery system, and then used for Drive the vehicle. Energy recovery is divided into coasting recovery working condition and braking recovery working cond...
Embodiment 2
[0058] For coasting energy recovery mode:
[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 in this embodiment does not detect that the driver’s brake signal is issued (such as: the brake pedal is not depressed), and the driver’s accelerator signal is not detected (such as: The accelerator pedal is not stepped on), and the battery temperature is monitored in real time. When the battery temperature exceeds the threshold and the vehicle is in a specific working condition (high speed, high gear), at this time, there is little power assistance under high speed working conditions, and there is a demand for braking and coasting energy recovery. Less, no need to collect too much braking and coasting energy, if you continue to maintain the first motor target torque (original target recovery torque) to do work on the battery, the battery will quickly overheat, so you can consider...
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 connected to the engine, a battery 3 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 conditions include braking energy recovery working conditions and coasting energy recovery working conditions, 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 power assist torque to the engine with the second motor target torque T2 (the original target motor assist torque), and the motor rotates at the second speed N2 and Assist the engine to rotate, through the bel...
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