An electric vehicle battery pack heating system and heating method
A technology for electric vehicles and heating systems, applied in batteries, secondary batteries, battery temperature control, etc., can solve problems such as the inability to meet new energy vehicles, and achieve the effect of reducing energy consumption
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[0033] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0034] Such as figure 1 Shown is a system schematic diagram of a battery pack heating system for an electric vehicle, including: a battery pack circuit 1 communicated with the battery pack 5 of the electric vehicle, a drive motor circuit 2 communicated with the motor cooling water channel of the drive motor 6 shell of the electric vehicle, Controller 3, and first temperature sensor 4, wherein:
[0035] The battery pack circuit 1 includes a second heater 13, a first heater 12 communicating with the battery pack, and a first switch 11 for controlling the communication or bypass between the battery pack 5 and the second heater 13 ;
[0036] The drive motor circuit 2 is connected or disconnected with the battery pack circuit 1 through the second switch 21;
[0037] The output terminals of the controller 3 are connected to the first swi...
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