Patent Publication Number: US-2018050596-A1

Title: Time Delay Toll System for Charging Piles and Its Method

Description:
FIELD OF THE INVENTION 
     The present invention relates to a technical field of new energy vehicles, and particularly relates to a time delay toll system for charging piles, and a method that adopts this system. 
     BACKGROUND OF THE INVENTION 
     With the development of the technology and the science, due to the energy saving and environmental protection of the new energy vehicles, new energy vehicles are more and more popular in common people. Therefore, in the current parking lot, more and more charging piles are used. 
     However, the current charging piles are often faced with such a problem: the user is still occupied for a long time and do not leave after charging is end. This condition greatly hindered the use of the other customers, and resulted in a waste of charging parking spaces and charging piles. 
     SUMMARY OF THE INVENTION 
     For the above technical problem, the present invention provides a time delay toll system for charging piles, which can promote the electric automobile user to leave as early as possible or settle accounts as early as possible after his charging is end, and can improve the availability factor of charging piles and parking stalls, and can increase the efficiency of operation of charging piles. 
     The technical solution of the present invention is, the system includes: 
     the charging state inspection module, which is configured to detect the magnitude of voltage of the communication cables of charging piles, and send the magnitude of voltage to the microprocessor; 
     the parking detection module, which is installed on the parking stall, and is configured to detect whether has an automobile on this parking stall; 
     the microprocessor, which is configured to determine whether the charging is end according to the magnitude of voltage, if yes, then notify the timer to reckon by time, and send the module of deducting fees the time that the automobile stayed from the beginning to leaving: 
     the module of deducting fees, which is configured to calculate charge expense and time delay expense, and is configured to deduct the said charge expense and time delay expense from the user&#39;s fund. 
     The present invention also provides a method that adopts this time delay toll system for charging piles, wherein the said charging pile is AC charging pile, and including the following steps:
         (1) Starting charging, the said magnitude of voltage is 6V;   (2) When charging is end, and when the said magnitude of voltage is 9V or 6V, perform the step (3), otherwise perform the step (5);   (3) the timer begins to reckon by time, and gets the time that the automobile stayed from the time beginning to the car&#39;s leaving;   (4) calculating charge expense and time delay expense;   (5) the said magnitude of voltage is 12V;   (6) deducting the said charge expense and time delay expense from the user&#39;s fund.       

     Or the present invention also provides a method that adopts this time delay toll system for charging piles, wherein the said charging pile is DC charging pile, including the following steps.
         (I) Starting charging, the said magnitude of voltage is 4V;   (II) When charging is end, and when the said magnitude of voltage is 4V, perform the step (III), otherwise perform the step (V),   (III) the timer begins to reckon by time, and gets the time that the automobile stayed from the time beginning to the car&#39;s leaving;   (IV) calculating charge expense and time delay expense;   (V) the said magnitude of voltage is 6V;   (VI) deducting the said charge expense and time delay expense from the user&#39;s fund.       

     By the judgment for the connection status of hardware and flexible toll mechanism, through the economic lever means, the present invention can promote the electric vehicle users to leave as soon as possible after their charging is end, make the charging piles and the parking spaces to the next users, improve the efficiency of the use of parking and charging piles, and increase the operation efficiency of charging piles. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a schematic view of the time delay toll system for charging piles according to the present invention; 
         FIG. 2  is a flow chart, showing a method that adopts the time delay toll system for charging piles according to the present invention, wherein the said charging pile is AC charging pile. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     As shown as  FIG. 1 , this time delay toll system for charging piles, the system includes: 
     the charging state inspection module, which is configured to detect the magnitude of voltage of the communication cables of the charging piles, and send the magnitude of voltage to the microprocessor; 
     the parking detection module, which is installed on the parking stall, and is configured to detect whether has an automobile on this parking stall; 
     the microprocessor, which is configured to determine whether the charging is end according to the magnitude of voltage, if yes, then notify the tinier to reckon by time, and send the module of deducting fees the time that the automobile stayed from the beginning to leaving; 
     the module of deducting fees, which is configured to calculate charge expense and time delay expense, and is configured to deduct the said charge expense and time delay expense from the user&#39;s fund. 
     By the judgment for the connection status of hardware and flexible toll mechanism, through the economic lever means, the present invention can promote the electric vehicle users to leave as soon as possible after the charging is end, make charging piles and parking spaces to the next users, improve the efficiency of the use of parking and the charging piles, and increase the operation efficiency of charging piles. 
     Preferably, the system also includes the communication module, which is configured to connect to the microprocessor, when the timer begins to reckon by time, send the time delay expense to the user by the communication module. 
     Preferably, the said charging pile is AC charging pile, when the said magnitude of voltage is 12V, the microprocessor is confirmed not to connect with a vehicle; when the said magnitude of voltage is 9V or 6V, the microprocessor is confirmed to connect with a vehicle. 
     Preferably, the said charging pile is DC charging pile, when the said magnitude of voltage is 6V, the microprocessor is confirmed not to connect with a vehicle; when the said magnitude of voltage is 4V, the microprocessor is confirmed to connect with a vehicle. 
     As shown as  FIG. 2 , the present invention also provides a method that adopts this time delay toll system for charging piles, wherein the said charging pile is AC charging pile, including the following steps:
         (1) Starting charging, the said magnitude of voltage is 6V;   (2) When the charging is end, and when the said magnitude of voltage is 9V or 6V, perform the step (3), otherwise perform the step (5);   (3) the timer begins to reckon by time, and gets the time that the automobile stayed from the time beginning to the car&#39;s leaving;   (4) calculating the charge expense and the time delay expense;   (5) the said magnitude of voltage is 12V;   (6) deducting the said charge expense and time delay expense from the user&#39;s fund.       

     Preferably, the said step (3) also includes a grace time, if a vehicle can leave the parking stall, the time delay expense is zero. 
     Or the present invention also provides a method that adopts this time delay toll system for charging piles, wherein the said charging pile is DC charging pile, including the following steps.
         (I) Starting charging, the said magnitude of voltage is 4V;   (II) When the charging is end, and when the said magnitude of voltage is 4V, perform the step (III), other wise perform the step (V),   (III) the timer begins to reckon by time, and gets the time that the automobile stayed from the time beginning to the car&#39;s leaving;   (IV) calculating the charge expense and the time delay expense;   (V) the said magnitude of voltage is 6V;   (VI) deducting the said charge expense and time delay expense from the user&#39;s fund.       

     Preferably, the said step (III) also includes a grace time, if a vehicle can leave the parking stall, the time delay expense is zero. 
     A specific example is given below. 
     (1) Judge whether a vehicle is connected to a charging pile according to CC, CP. 
     According to the definition of the AC charging pile CP and DC charging pile CC in the national standard GB/T18487, GB/T20234: the voltage of the AC charging pile CC communication cable is DC 12V voltage at no-load, and the voltage is less than 12V (9V, 6V when inserting the socket) after the vehicle is connected. 
     the voltage of DC charging pile CP communication cable is DC 6V voltage at no-load, and the voltage is less than 6V (4V when inserting the socket, 6V when pressing the button of the head of charging device) after the vehicle is connected. 
     (2) As shown as Table 1, the charging pile provides the real-time feedback of the CC and CP voltage status to the internal program and the remote system to determine whether the vehicle is connected. At the same time, according to the following logic to determine whether need to charge the time delay expense. 
     
       
         
           
               
               
               
               
             
               
                 TABLE 1 
               
               
                   
               
               
                 the voltage of 
                   
                 the voltage of 
                   
               
               
                 AC charging 
                   
                 DC charging 
               
               
                 pile CC commu- 
                 corresponding 
                 pile CP commu- 
                 corresponding 
               
               
                 nication cable 
                 state 
                 nication cable 
                 state 
               
               
                   
               
             
            
               
                 12 V 
                 don&#39;t connect 
                 6 V don&#39;t 
                 don&#39;t connect 
               
               
                   
                   
                 connect 
                 to a vehicle 
               
               
                 9 V have 
                 have connected 
                 9 V the button 
                 have connected 
               
               
                 connected 
                 to a vehicle 
                 is pressed 
                 to the socket, 
               
               
                   
                   
                   
                 the switch is 
               
               
                   
                   
                   
                 pressed 
               
               
                 6 V have 
                 have connected 
                 4 V have 
                 have connected 
               
               
                 connected 
                 to a vehicle 
                 connected 
                 to a vehicle 
               
               
                   
               
            
           
         
       
     
     (3) When the charging pile hardware judged that the user has finished the charging (fill or manual stop), sends notifications to the user according to “grace time” preset by the software, and requires the user to draw charging device and moves the car in the grace time, at the same time starts the countdown. 
     (4) When the user cuts off connection (draw charging device) in delay time fee grace time, the system does not charge any delay cost. 
     (5) When the user stays beyond delay time fee grace time, the system will begin to a new timing or record, and charge according to the system set. 
     (6) Delay fee setting, can calculate in accordance with the time as a unit, or can single one-time billing. 
     It is main in the present invention to judge whether this user cuts off connection, that is, whether CP returns to 12V after charging. In other countries except China, it is generally Combo combination, that is, one interface for AC and DC. In DC it also can be determined whether inserting gun or drawing gun by CP definition in AC, as shown as Table 2. 
     
       
         
           
               
               
               
               
             
               
                 TABLE 2 
               
               
                   
               
               
                 Standard number 
                 SAE J1772 (Combo) 
                 IEC 62916 (Combo) 
                 GB/T (18487. 1-2015) 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
            
               
                 AC 
                 connecting pin 
                 CP 
                 CP 
                 CP 
               
            
           
           
               
               
               
               
               
               
            
               
                 charging 
                 check the 
                 disconnect 
                 12 V ± 1 V   
                 12 V ± 1 V  
                 12 ± 0.8 V  
               
               
                 pile 
                 status of 
                 (drawing gun) 
               
               
                   
                 voltage by 
                 connect but not charge 
                 9 ± 1 V 
                 9 V ± 1 V 
                 9 ± 0.8 V 
               
               
                   
                 pin 
                 start charging (Charging 
                 6 ± 1 V 
                 6 V ± 1 V 
                 6 ± 0.8 V 
               
               
                   
                   
                 area ventilation not 
               
               
                   
                   
                 required) 
               
               
                   
                   
                 start charging (Charging 
                 3 ± 1 V 
                 3 V ± 1 V 
                 / 
               
               
                   
                   
                 area ventilation required) 
               
               
                   
                   
                 not drawing gun after 
                 6 ± 1 V    9 V ± 1 V 
                 6 ± 1 V    9 V ± 1 V 
                 6 V ± 0.8 V    9 ± 0.8 V 
               
               
                   
                   
                 charging (Not disconnect 
               
               
                   
                   
                 connect, but Charging stop) 
               
               
                   
               
            
           
         
       
     
     Also, charging piles can obtain the user&#39;s vehicle battery information by communication with the vehicle&#39;s communication cables (Can, PLC or CCS protocol), and when battery SoC value is arrived set value, notify the user. 
     According to CC, CP, or other cables that confirm to communicate with a vehicle (each country is different to define the interface, CC: connect confirm, CP: control portion confirm), the charging piles can determine the connection status of the vehicle and the charging piles. 
     The above stated is only preferable embodiments of the present invention, and it should be noted that the above preferable embodiments do not limit the present invention. The claimed scope of the present invention should be based on that defined by the claims. For a skilled person in this technical field, without departing from spirit and scope of the present invention, any improvement and amendment can be made, and these improvement and amendment should belong to the claimed scope of the present invention.