Economical heat pump system with waste heat recovery function
A heat pump system, waste heat recovery technology, applied in heating/cooling equipment, air treatment equipment, transportation and packaging, etc., can solve the problems of low energy efficiency, unusable, low efficiency, etc., to optimize the process and improve the effect of heating efficiency
Pending Publication Date: 2022-01-07
ANHUI JIANGHUAI SONGZ AIR CONDITIONING
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Problems solved by technology
[0002] The electric vehicle industry is developing rapidly, but due to the characteristics of batteries and the diversity of electric vehicle application environments, it is currently difficult for electric vehicles to be widely used in severe cold areas and hot areas, or to run over long distances; traditional electric vehicle air conditioning systems generally use air conditioning refrigeration + Auxiliary PTC method is used to realize the cooling and heating of the passenger compartment. This system structure heating method has low energy efficiency and has a great impact on the cruising range of the vehicle. This heating method consumes 1KW of electric energy and can only generate 1KW of heat; Two types of heat pump heating and air-conditioning systems. The first type of air-conditioning system absorbs heat from the outside and releases it to the passenger compartment through the built-in condenser of the heat pump. However, the system is complicated because the cycle of the system determines that the external heat exchanger The last process cannot be used; the second type of heat pump air-conditioning system uses the waste heat recovery device to recover heat, but absorbs heat indirectly from the atmosphere, in which the heat from the outside air is sent to the radiator to the waste heat recovery device to the heat pump and finally sent to the passenger compartment; this This method uses two heat exchangers, the heat is exchanged twice, and the efficiency is low
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[0028] The application will be described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific embodiments are only used to further illustrate the application, and cannot be interpreted as limiting the protection scope of the application. The above application content makes some non-essential improvements and adjustments to this application.
[0029] Such as figure 1 An economical heat pump system with waste heat recovery is shown, which is composed of an air conditioning system, a battery cooling circuit, a motor cooling circuit and a control valve system. A condenser 11 and an evaporator 12, a gas-liquid separator 13 and a compressor 14 arranged between the inner condenser 11 and the evaporator 12;
[0030] Specifically, the heat exchanger system includes a first throttling mechanism 21, an outer heat exchanger 22 and a plate heat exchanger 23 connected in series in sequence, and a second unit is arra...
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The invention relates to an economical heat pump system with a waste heat recovery function. The economical heat pump system comprises an air conditioning system, a battery cooling loop, a motor cooling loop and a control valve system, a battery cooler used for heat exchange between the air conditioning system and the battery cooling loop is arranged between the air conditioning system and the battery cooling loop, the air conditioning system comprises a heat exchange system, and the heat exchange system comprises a plate heat exchanger. The control valve system comprises a five-way valve used for controlling connection and disconnection between the battery cooling loop and the motor cooling loop, and a three-way valve used for controlling whether heat exchange is conducted between the motor cooling loop and the plate heat exchanger or not. The control valve system controls the five-way valve and the three-way valve to achieve waste heat recovery of the heat pump system. When the external heat exchanger is in a refrigerating state and a heating state, a refrigerant can achieve positive and negative different flow directions in the external heat exchanger, namely, the flow directions of heating flow and refrigerating flow are different, and flow optimization of the external heat exchanger can be achieved; and the system can directly recover heat dissipated from the electric appliance and the cooling loop, so that the heating efficiency of the heat pump system is effectively improved.
Description
technical field [0001] The invention belongs to the field of electric vehicles, in particular to the field of electric vehicle heat pump systems. Background technique [0002] The electric vehicle industry is developing rapidly, but due to the characteristics of batteries and the diversity of electric vehicle application environments, it is currently difficult for electric vehicles to be widely used in severe cold areas and hot areas, or to run over long distances; traditional electric vehicle air conditioning systems generally use air conditioning refrigeration + Auxiliary PTC method is used to realize the cooling and heating of the passenger compartment. This system structure heating method has low energy efficiency and has a great impact on the cruising range of the vehicle. This heating method consumes 1KW of electric energy and can only generate 1KW of heat; Two types of heat pump heating and air-conditioning systems. The first type of air-conditioning system absorbs he...
Claims
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Login to View More IPC IPC(8): B60H1/00B60H1/14
CPCB60H1/00392B60H1/00321B60H1/143
Inventor 郑志华郑伟刘明磊彭业勋章晗
Owner ANHUI JIANGHUAI SONGZ AIR CONDITIONING