Control method for new energy vehicle heating

A technology of a new energy vehicle and a control method, which is applied in the field of heating control of new energy vehicles, can solve the problems of temperature fluctuation of the passenger compartment and the rapid heating of the passenger compartment, and achieves the improvement of mileage, reduction of working time and power, and smooth temperature. Effect

Active Publication Date: 2017-09-12
GUANGZHOU AUTOMOBILE GROUP CO LTD
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AI Technical Summary

Problems solved by technology

[0003] In the above scheme, when the engine starts to work at low temperature, the water temperature is low, and the passenger compartment cannot be warmed up quickly; when the engine is switched from working to not working, the water temperature drops significantly, and the temperature of the passenger compartment fluctuates

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  • Control method for new energy vehicle heating
  • Control method for new energy vehicle heating
  • Control method for new energy vehicle heating

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Embodiment Construction

[0021] The following descriptions of various embodiments refer to the accompanying drawings to illustrate specific embodiments in which the present invention can be implemented.

[0022] figure 1 It is a schematic diagram of the connection relationship of the new energy vehicle heating system in the embodiment of the present invention, wherein the proportional three-way valve is connected with the engine, the PTC heater and the water pump respectively, the PTC heater is connected with the warm air core of the HVAC, and the water pump and the engine They are also respectively connected with the warm air core of the HVAC to form two water flow circuits: (1) water pump water circuit: water pump—proportional three-way valve—PTC heater—heat air core; (2) engine water circuit: Engine - proportional three-way valve - PTC heater - warm air core - engine.

[0023] please refer again figure 2 As shown, an embodiment of the present invention provides a heating control method for a new...

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Abstract

The invention provides a control method for new energy vehicle heating. The method includes the steps that after an engine is started, whether or not water temperature of the engine reaches a first temperature threshold is judged, and if the water temperature of the engine does not reach the first temperature threshold, the water flow is controlled to circulate as the waterway of a water pump; if the water temperature of the engine reaches the first temperature threshold, the water flow is controlled to circulate as the waterway of the engine, then whether or not the water temperature of the engine reaches a second temperature threshold is further judged, if the water temperature of the engine reaches the second temperature threshold, the waterway of the water pump and the waterway of the engine are shut when a passenger compartment does not need heating, and the water flow is controlled to circulate as the waterway of the water pump and the waterway of the engine at the same time when the passenger compartment needs heating. According to the control method for new energy vehicle heating, not only is the heating requirement of the passenger compartment satisfied, but it is ensured that an air outlet of the passenger compartment is stable in temperature; in some working conditions, the working time and power of a PTC heater are reduced, electricity is saved, and the mileage is improved.

Description

technical field [0001] The invention relates to the technical field of new energy vehicles, in particular to a heating control method for new energy vehicles. Background technique [0002] At present, the heating system of new energy vehicles, by adding a positive temperature coefficient PTC (Positive Temperature Coefficient) heater, when the engine is not working, the coolant is heated through the PTC and circulated to the heating system to increase the temperature of the passenger compartment; when the engine is working, cut off the PTC, The heat generated by the engine is circulated to the heater core. [0003] In the above scheme, when the engine starts to work at low temperature, the water temperature is low, and the passenger compartment cannot be warmed up quickly; when the engine is switched from working to not working, the water temperature drops significantly, and the temperature of the passenger compartment fluctuates. Contents of the invention [0004] The tec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60H1/03
CPCB60H1/034
Inventor 董军梁猛杨丽君夏文山
Owner GUANGZHOU AUTOMOBILE GROUP CO LTD
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