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BMS with Li-Battery



		

			

									
					    KaHo
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Jan 29, 2013 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Hi
    
 
    I am going to develop a standalone system and use Li-ion battery for the power source.
    
 
    In addition, I need to connect several packs of Li-ion battery in parallel to maximize the standby period. 
    
 
    (P.S, in this system, there is no charging functions as the batteries will be received  for charging.)
    
 
    And my concern is the system should be implemented a battery management system for a batter energy control and safety.
    
 
    Safety is the mainly concerning point as I think it is dangerous to connect those packs of batteries in parallel, am I right?
    
 
    Is there any controlling ICs or circuits of such kind of BMS?
    
 
    I have no ideas for that...
    
 
    Regards
    
 
    KaHo
    
									
			        
		
    

				
						
        

    
    Tags: 
                                            
                 source
                
                                                    
                 standalone
                
                                                    
                 bms
                
                                                    
                 li-ion
                
                                                    
                 power
                
                                        
                                            
                
                
                                        
                                            
                
                
                                
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      •  Analog Employees  
      
            
						
                            
            
            				
            
                on Jan 29, 2013 8:14 PM
            
            
					
      
	
      

		
		
      
					
      Kaho,
      
 
      I am not familiar with how parallel batteries are monitored, balanced and protected.
      
 
      Analog Devices has some devices for series connected LI batteries such as the AD7280A and AD8280.
      
 
      ADI offers the main components required for a complete Li-ion battery monitoring and protection system:  
      
 
        
  
      • Voltage measurement device - monitors and balances the cells (AD7280A)  
        • 
  
      • Current measurement device - monitors the cell stack’s current (ADuC703x or AD821x)  
        • 
  
      • Isolator - brings the measurement signals across the high-voltage barrier to the battery management unit (ADuM140x or ADuM540x)  
        • 
  
      • Safety monitor - enables creation of a fail-safe circuit and safe environment to the user (AD8280)  
        • 
  
      • Battery management unit – controls and manages battery functions to optimize operation (Blackfin ADSP-50x) 
        • 
 
      
 
      Good luck and thanks for looking at ADI for solutions.
      
 
       
      
 
      LucaV
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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													0
							
			
				
									
							        
			
			
			
      •  Analog Employees  
      
            
						
                            
            
            				
            
                on Jan 29, 2013 8:14 PM
            
            
					
      
	
      

		
		
      
					
      Kaho,
      
 
      I am not familiar with how parallel batteries are monitored, balanced and protected.
      
 
      Analog Devices has some devices for series connected LI batteries such as the AD7280A and AD8280.
      
 
      ADI offers the main components required for a complete Li-ion battery monitoring and protection system:  
      
 
        
  
      • Voltage measurement device - monitors and balances the cells (AD7280A)  
        • 
  
      • Current measurement device - monitors the cell stack’s current (ADuC703x or AD821x)  
        • 
  
      • Isolator - brings the measurement signals across the high-voltage barrier to the battery management unit (ADuM140x or ADuM540x)  
        • 
  
      • Safety monitor - enables creation of a fail-safe circuit and safe environment to the user (AD8280)  
        • 
  
      • Battery management unit – controls and manages battery functions to optimize operation (Blackfin ADSP-50x) 
        • 
 
      
 
      Good luck and thanks for looking at ADI for solutions.
      
 
       
      
 
      LucaV
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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