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Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2024
Accounting Policies [Abstract]  
Summary of Cash and Cash Equivalents
Cash and cash equivalents as reported in the consolidated statement of cash flows are presented separately on the consolidated balance sheets as follows:
 
    
As of December 31, 2023
     
As of December 31, 2024
  
    
Amount
     
RMB equivalent
     
Amount
     
RMB equivalent
  
Cash and cash equivalents:
            
RMB
      13,597,107        13,597,107        15,838,827        15,838,827  
US$
      1,021,773        7,236,909        345,447        2,483,208  
HK$
      4,218        3,823        5,839        5,407  
Others
      not applicable        289,324        not applicable        258,832  
     
 
 
        
 
 
  
Total
         21,127,163           18,586,274  
     
 
 
        
 
 
  
Summary of Accounts Receivable, Allowance for Credit Loss
The following table summarizes the activity in the allowance for credit losses related to accounts receivable, other current assets, installment payment receivables and other
non-current
assets for the years ended December 31, 2022, 2023 and 2024 :
 
    
For the Year Ended
December 31, 2022
  
Balance as of December 31, 2021
      67,096  
Current period provision
      67,654  
Write-offs
      (13,043 ) 
  
 
 
  
Balance as of December 31, 2022
      121,707  
  
 
 
  
 
    
For the Year Ended
December 31, 2023
  
Balance as of December 31, 2022
      121,707  
Current period provision
      70,357  
Write-offs
      (41,281 ) 
  
 
 
  
Balance as of December 31, 2023
      150,783  
  
 
 
  
 
 
  
For the Year Ended
December 31, 2024
 
Balance as of December 31, 2023
   
 
150,783
 
Current period provision
   
 
5,572
 
Write-offs
   
 
(36,557
)
 
  
 
 
  
Balance as of December 31, 2024
   
 
119,798
 
  
 
 
  
Summary of Useful Lives of Property Plant and Equipment
    
Estimated useful lives
  
Buildings
     
10
 
to 
20
 
years		  
Machinery and equipment
     
2
 
to 
10
 
years		  
Charging infrastructure
      3 to 5 years  
Vehicles
      2 to 5 years  
Computer and electronic equipment
      2 to 10 years  
Leasehold improvements
     


 Shorter of the
lease terms or
the estimated
useful lives		  
 
 
 
Others
      2 to 5 years  
Summary of Finite Lived Intangible Assets Useful Lives Amortization of intangible assets with finite lives are computed using the straight-line method over the estimated useful lives as below:
 
    
Estimated useful lives
  
Software
      2 to 10 years  
License of maintenance and overhauls
      26 months  
VPT
      10 years  
VMT
      5 years  
Robotics platform technology
      10 years  
Others
      5 to 10 years