Patent ID: 11899072
Assignee: JOULES MILES CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A method for estimating Depth of Discharge (DoD) of a battery, comprising the steps of:
(1) obtaining voltage Va at a first electric charge rate A(Ia) and voltage Vb at a second electric charge rate B(Ib) by checking a voltage-DoD table based on DoD of an experimental battery respectively;
(2) measuring voltage V of the experimental battery;
(3) substituting Ia, Ib, Va, Vb and V into an expression, I
    
      e
      ⁢
      s
      ⁢
      t
    
  
  =
  
    
      (
      
        
          I
          b
        
        -
        
          I
          a
        
      
      )
    
    ×
    
      
        (
        
          
            V
            α
          
          -
          V
        
        )
      
      
        (
        
          
            V
            a
          
          -
          
            V
            b
          
        
        ), to calculate an estimated current lest; and
(4) using a Coulomb counter to update the voltage-DoD table and estimate the DoD of the experimental battery.