Intelligentized multi-loop thermal management system of electric automobile
A thermal management system and electric vehicle technology, applied in the field of intelligent multi-circuit electric vehicle thermal management system, can solve the problems of reducing heat dissipation and heating, short vehicle cruising range, and fewer control circuits, so as to maintain heat balance and ensure efficient operation Effect
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[0065] Example 1
[0066] Reference figure 1 , An intelligent multi-circuit electric vehicle thermal management system, including a power battery pack 38, a drive motor, a motor controller, an on-board charger 7, a DC / DC converter 40, a battery radiator 35, a battery cooler 23, and motor cooling Device 15, electric water pump, electric oil pump, expansion tank 17, PTC heater, heat exchanger, electric compressor 24, condenser 18, evaporator 21, liquid storage and drying pot 19, heater core 27, four-way valve 16 , Three-way valve, through valve and electronic expansion valve.
[0067] In this embodiment, there are two drive motors, including a first drive motor 10 and a second drive motor 11; there are two motor controllers, including a first motor controller 5 and a second motor controller 6, and an electric water pump There are 4 electric water pumps, including the first electric water pump 1, the second electric water pump 3, the third electric water pump 31, and the fourth elect...
Example Embodiment
[0072] Example 2
[0073] During the operation of the electric vehicle, the power battery pack 38 needs to be kept in a suitable temperature range. For lithium-ion batteries, it is generally considered that the temperature is within a reasonable range in the range of 0-40°C, but it is too hot and too cold. When the temperature of the power battery pack 38 is within a reasonable range, but the temperature difference between the individual cells is too large and exceeds the reasonable range (usually considered that the temperature difference between the single cells is less than 5°C is a reasonable range), the power battery pack 38 Perform temperature equalization.
[0074] Reference figure 2 , The coolant is driven by the fourth electric water pump 32, first flows into the inlet A of the third three-way valve 33, then flows out from the outlet C, and then flows through the second PTC heater 37 (the second PTC heater 37 is not working at this time), Then it flows into the internal...
Example Embodiment
[0078] Example 3
[0079] Reference Image 6 with Figure 7 , The first electric oil pump 12, the first drive motor 10, and the first heat exchanger 8 are connected in series to form the first drive motor oil cooling circuit; the second electric oil pump 13, the second drive motor 11, and the second heat exchanger 9 The connection forms the second drive motor oil cooling circuit. The drive motor oil cooling circuit has more advantages than the traditional motor liquid cooling circuit, because the insulating heat transfer oil can enter the drive motor to directly cool the motor rotor, and the cooling effect is better.
[0080] Reference Figure 8 , By the first electric water pump 1, the first straight valve 2, the first motor controller 5, the first heat exchanger 8, the second electric water pump 3, the first three-way valve 4, the second motor controller 6, the first The second heat exchanger 9, the on-board charger 7, the second three-way valve 14, the motor radiator 15, the fi...
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