Heat pump air conditioning system and electric vehicles

A heat pump air conditioner and battery technology, applied in vehicle components, high-efficiency conditioning technology, air treatment equipment, etc., can solve the problem of no battery heating system, unable to meet the requirements of battery heating, etc., to facilitate pipeline layout and improve charging and discharging efficiency. , The effect of easy mass production
CN107356022BActive Publication Date: 2021-02-23BYD CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
BYD CO LTD
Publication Date
2021-02-23

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Abstract

The invention discloses a heat pump air-conditioning system and an electric vehicle. The system includes a compressor, an indoor condenser, an indoor evaporator, an outdoor heat exchanger and a battery pack with an evaporator inside. The compressor communicates with the indoor condenser. The ground of the condenser communicates with the outdoor heat exchanger through the first throttling branch or the first flow branch, and the ground of the outdoor heat exchanger communicates with the compressor through the second throttling branch or with the indoor air through the second throttling branch. The evaporator is connected, the indoor evaporator is connected with the compressor, the evaporator in the battery pack is connected with the outdoor heat exchanger or the indoor evaporator by the on or off battery cooling branch, and the on or off battery heating branch It communicates with the compressor; the evaporator in the battery pack communicates with the compressor through the on or off battery cooling return branch, and communicates with the indoor condenser through the on or off battery heating return branch. As a result, heating energy efficiency can be improved, and the air-conditioning system can be used to heat or cool the battery pack.
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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 utility model patent whose publication number is CN205039220U discloses a cooling system for an automobile power battery. Although this system can be used in various types of electric vehicles to cool the battery air conditioning system, but the system only has a cooling system and no battery heating system. This patented technology can only meet the high-temperature cooling of the battery, and cannot meet the requirements of h...

Claims

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