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Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2022

Summary of Significant Accounting Policies

Schedule of significant unobservable inputs adopted in the valuation

​

​	​	​	​	​
​	​	December 31, 2021	​	December 31, 2022
Unobservable Input
Expected volatility		61%		54%-61%
Probability		Liquidation scenario: 35% Redemption scenario: 35% IPO scenario: 30%		Liquidation scenario: 25%-40% Redemption scenario: 25%-40% IPO scenario: 20%-50%

​

Schedule of cash and cash equivalents

​

​	​	​	​	​
​	​	December 31,	​	December 31,
​		2021		2022
Cash and cash equivalents		15,333,719		19,887,575
Restricted cash		2,994,408		3,154,240
Long-term restricted cash		46,437		113,478
Total		18,374,564		23,155,293

​

Schedule of expected credit loss provision for the current and non-current assets

Balance as at December 31, 2021

​	​	​	​	​	​	​
​	​	​	​	Expected	​	Expected
​	​	Original	​	credit loss	​	credit loss
​		amount		Rate		provision
Current assets:
Trade and notes receivable		2,823,222		0.90	%	25,417
Amounts due from related parties		1,564,025		0.81	%	12,691
Prepayments and other current assets		1,854,075		0.21	%	3,932
Non-current assets:		​		​		​
Other non-current assets		5,598,764		0.88	%	49,309

​

Balance as at December 31, 2022

​	​	​	​	​	​	​
​	​	​	​	Expected	​	Expected
​	​	Original	​	credit loss	​	credit loss
​		amount		Rate		provision
Current assets:
Trade and notes receivable		5,157,814		0.77	%	39,644
Amounts due from related parties		1,387,694		0.49	%	6,738
Prepayments and other current assets		2,250,441		0.18	%	4,033
Non-current assets:		​		​		​
Other non-current assets		7,488,200		1.20	%	89,641

​

Schedule of estimate useful life of property, plant and equipment

​

		Useful lives
Buildings and constructions	​	20 years
Production facilities	​	10 years
Charging & battery swap equipment	​	5 to 8 years
R&D equipment	​	5 years
Computer and electronic equipment	​	3 years
Purchased software	​	3 to 5 years
Leasehold improvements	​	Shorter of the estimated useful life or remaining lease term (ranging from 1-10 years)
Corporate vehicles	​	5 years
Others (office equipment, after-sales equipment, etc)	​	3 to 5 years

​

Schedule of estimate useful life of intangible assets, net

​

	​
		Useful lives
Domain names and others	​	5 years

​

Schedule of reconciliation of carried-forward warranty liabilities

​

​	​	​	​	​	​	​
​	​	For the Year Ended December 31,
​		2020		2021		2022
Warranty – beginning of year		412,004		952,946	​	1,962,977
Provision for warranty		582,069		1,078,854	​	1,128,920
Warranty costs incurred		(41,127)		(68,823)	​	(144,960)
Warranty– end of year		952,946		1,962,977	​	2,946,937

​

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