AC Self-Heating
Current situation of the problem
Solution Strategy
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Sine wave (ASC)
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Square Wave (APC)
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Variable Frequency Amplitude Variation (DSC)
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Triangle (TWC)
Test service
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Verification of short-term temperature rise rate
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Long-term heating cycle durability verification
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Formulation and implementation of uniform steady-state heating schemes
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Ac heating life prediction model
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Aging mechanism analysis: Battery disassembly, material characterization
Advantages: High heating efficiency, low energy consumption, strong environmental adaptability, and comprehensive assessment of various performances
Industry Progress
| Application scenarios | Configuration plan (battery + motor + with or without external inductor) |
| Parking scene | Three-phase single motor + battery single module + no additional inductance solution |
| Three-phase single motor + battery single module + additional inductor solution | |
| Four-phase single motor + battery single module + no additional inductance solution (with boost charging function) | |
| Three-phase single motor neutral point lead-out + battery dual-module + additional inductor solution | |
| Three-phase dual motor + battery single module + no additional inductance solution | |
| Charging scene | Joint heating solution for the end of charging piles |
| Driving scene | Driving heating solution |