Author ：Iflowpower – Portable Power Station Supplier
In response to the problem of the decline in the performance of the power lithium battery, the main plant is currently three major directions. One is to install the PTC heating system, so that the battery temperature will not be too low. In this way, the structure is simple and the cost is low, but it is necessary to consume power to heate heat, and some of the battery is also sacrificed.
So this way, the protection of life is limited, more suitable for the South, is the method currently adopted in most car companies. The other is the PTC + diesel heating system, this direction represents the company is Weima. The principle of Weima second-generation heat management system is based on PTC, and then heats liquid around the battery pack around the battery pack through the diesel heating system to ensure that the battery is in a suitable temperature range, thereby ensuring the stability of the battery.
This method is faster and is more secure in a low temperature environment, but a certain extent violates the initiative of electric vehicles. The third is the motor blocking technology, the application is typical. The working principle is to use the motor winding as a heating resistor, and the waste heat of the motor is heated to the battery pack.
This technology is important for the low temperature heat pump system, and when the temperature is between -10 ¡ã C ~ 10 ¡ã C, the heat pump air conditioner is heated and hosted by the PT.
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