Heat pump air conditioning system and electric vehicles
A heat pump air conditioner and outdoor heat exchanger technology, which is applied to vehicle parts, air handling equipment, lighting and heating equipment, etc., can solve problems such as complicated installation, low heating energy efficiency, and inability to meet the requirements of defrosting and defogging regulations, and achieve reduction Reduce energy consumption, improve low-temperature heating performance, and facilitate pipeline layout
Active Publication Date: 2019-12-10
BYD CO LTD
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Problems solved by technology
[0004] The object of the present invention is to provide a heat pump air-conditioning system and an electric vehicle to solve the problem of low heating energy efficiency and failure to meet defrosting and defogging regulations for pure electric vehicles or hybrid vehicles without engine waste heat circulation system. Requirements, complex installation and other issues, can significantly improve the heating performance of electric vehicles
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[0040] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0041] In the present invention, unless stated otherwise, the used orientation words such as "up, down, left, right" are usually relative to the drawing direction of the drawings, and "upstream and downstream" are relative to Medium, for example, in terms of the flow direction of the refrigerant, specifically, the flow direction toward the refrigerant is downstream, and the flow direction away from the refrigerant is upstream, and "inside and outside" refer to the inside and outside of the corresponding component outline.
[0042] In addition, in the present invention, electric vehicles may include pure electric vehicles, hybrid vehicles, and fuel cell vehicles....
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The invention discloses a heat pump air-conditioning system and an electric vehicle. The system includes a compressor, an indoor condenser, an indoor evaporator and an outdoor heat exchanger. The compressor communicates with the indoor condenser, and the indoor condenser passes through a first throttling branch. Or the first flow branch communicates with the indoor evaporator, the outdoor heat exchanger communicates with the low-pressure air inlet of the compressor through the second flow branch, or communicates with the indoor evaporator through the second throttling branch, and the indoor evaporator It communicates with the low-pressure air inlet of the compressor, and the indoor condenser communicates with the outdoor heat exchanger through the first enthalpy-increasing branch that is turned on or off, and the outdoor heat exchanger communicates with the medium-pressure inlet of the compressor through the second enthalpy-increasing branch. The air port is connected, the first enthalpy increasing branch and the second enthalpy increasing branch conduct heat exchange through the first plate heat exchanger, the second enthalpy increasing branch is provided with a first expansion valve, and the outdoor heat exchanger passes through the first expansion valve communicate with the first plate heat exchanger. In this way, the heating energy efficiency can be improved, and the defrosting and defogging regulations can be met.
Description
technical field [0001] The invention relates to the field of air conditioning for electric vehicles, in particular to a heat pump air conditioning system and the electric vehicle. Background technique [0002] Electric vehicles do not have the engine waste heat that traditional vehicles use for heating, so they cannot provide a heating source. Therefore, the air-conditioning system of the electric vehicle must have the function of heating itself, that is, adopt a heat pump type air-conditioning system and / or electric heating for heating. [0003] The invention patent application with publication number CN102788397A discloses a heat pump air-conditioning system for electric vehicles. Although the heat pump air-conditioning system can be used in various types of electric vehicles, the system uses two outdoor heat exchangers (an outdoor condenser and an outdoor evaporator), resulting in a large wind resistance of the front-end module of the vehicle and a complicated system str...
Claims
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IPC IPC(8): F25B41/04F25B41/06B60H1/00F25B41/20F25B41/30
CPCB60H1/00007F25B41/30F25B41/20B60H1/22
Inventor 谭廷帅叶梅娇陈雪峰
Owner BYD CO LTD
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