Protecting device of electromobile

Abstract

A protecting device of electromobile has control device to control the rotating speed of a motor on the basis of an accelerator signal, a brake signal, and output signals from an encoder sensor, a CS sensor, and a phase current detector, which includes a device for detecting interruption of input of the output signals and outputting detecting signal, a device for stopping supply of electricity to the motor in response to the detecting signal of the detecting device, a device for detecting a value of a phase current of the motor and outputting a detecting signal when the phase current is abnormal, and a device for stopping supply of electricity to the motor in response to the detecting signal of the phase current detecting device.

What is claimed is:  
     
         1 . A protecting device of an electromobile having a control device to control a rotating speed of a motor on the basis of a control signal of the motor, which comprises: 
 a detecting means for detecting interruption of input of the control signal of the motor and outputting a detecting signal; and    a stopping means for stopping supply of electricity to the motor in response to the detecting signal of the detecting means.    
     
     
         2 . The protecting device as claimed in  claim 1 , 
 wherein the control device controls the rotating speed of the motor on the basis of an accelerator signal and a brake signal, and    the detecting means is a detecting means for detecting interruption of input of the accelerator signal and outputting the detecting signal.    
     
     
         3 . The protecting device as claimed in  claim 1 , 
 wherein the control device controls the rotating speed of the motor on the basis of an accelerator signal, a brake signal, and an output signal from an encoder sensor set in the motor, and    the detecting means is a detecting means for detecting interruption of input of the output signal from the encoder sensor and outputting the detecting signal.    
     
     
         4 . The protecting device as claimed in  claim 1 , 
 wherein the control device controls the rotating speed of the motor on the basis of an accelerator signal, a brake signal, and an output signal from a CS sensor set in the motor, and    the detecting means is a detecting means for detecting interruption of input of the output signal from the CS sensor and outputting the detecting signal.    
     
     
         5 . The protecting device as claimed in  claim 1 , 
 wherein the control device controls the rotating speed of the motor on the basis of an accelerator signal, a brake signal, and an output signal from a phase current detector set in the motor, and    the detecting means is a detecting means for detecting interruption of input of the output signal from the phase current detector and outputting the detecting signal.    
     
     
         6 . A protecting device of an electromobile having a control device to control a rotating speed of a motor on the basis of an accelerator signal and a brake signal, which comprises a current detecting means for detecting a value of a phase current of the motor and outputting a detecting signal, and a stopping means for stopping supply of electricity to the motor when the phase current of the motor is abnormal on the basis of the detecting signal of the current detecting means.  
     
     
         7 . A protecting device of an electromobile having a control device to control a rotating speed of a motor using a primary battery as a power source on the basis of an accelerator signal and a brake signal, which comprises a current detecting means for detecting a value of a current of the primary battery and outputting a detecting signal, and a stopping means for stopping supply of electricity to the motor when the current of the primary battery is abnormal on the basis of the detecting signal of the current detecting means.  
     
     
         8 . A protecting device of an electromobile having a control device to control a rotating speed of a motor using a primary battery as a power source on the basis of an accelerator signal and a brake signal, which comprises a voltage detecting means for detecting a value of a voltage of the primary battery and outputting a detecting signal, and a current limiting means for limiting a current fed to the motor by a decreasing amount of the voltage of the primary battery on the basis of the detecting signal of the detecting means.  
     
     
         9 . A protecting device of an electromobile having a control device to control a rotating speed of a motor using a primary battery as the power source on the basis of an accelerator signal and a brake signal, which comprises a voltage detecting means for detecting a value of a voltage of the primary battery and outputting a detecting signal, and a current limiting means for controlling a field-weakening current fed to the motor on the basis of the detecting signal of the detecting means when the voltage of the primary battery is abnormally increased, thereby reducing a regenerative amount from the motor to the primary battery.  
     
     
         10 . A protecting device of an electromobile having a control device to control a rotating speed of a motor using a primary battery as a power source on the basis of an accelerator signal and a brake signal, and a control battery to supply electricity to the control device, which comprises a voltage detecting means for detecting a value of a voltage of the control battery and outputting a detecting signal, and a stopping means for stopping supply of electricity to the motor on the basis of the detecting signal of the detecting means when the voltage of the control battery is abnormally decreased.  
     
     
         11 . A protecting device of an electromobile having a control device to control a rotating speed of a motor on the basis of an accelerator signal and a brake signal, which comprises a detecting means for detecting overheat of the motor and outputting a detecting signal, and a controlling means for stopping or limiting supply of electricity to the motor in response to the detecting signal of the detecting means.  
     
     
         12 . A protecting device of an electromobile having an inverter driving a motor and a control device to control a rotating speed of the motor on the basis of an accelerator signal and a brake signal, which comprises a detecting means for detecting overheat of a switching element of the inverter and outputting a detecting signal, and a controlling means for stopping or limiting supply of electricity to the motor in response to the detecting signal of the detecting means.