CN-121973600-A - Integrated heat management unit

CN121973600ACN 121973600 ACN121973600 ACN 121973600ACN-121973600-A

Abstract

The invention discloses an integrated heat management unit which comprises a liquid cooling unit for refrigerating or cooling a cab and a battery, wherein the liquid cooling unit is provided with a refrigerating pipeline, a heating pipeline and a self-circulation pipeline, and can be freely switched among a refrigerating mode, a heating mode and a self-circulation mode. The integrated heat management unit, the compressor simultaneously supplies cold energy to the battery and the cab, and the cooling/heating requirements of the cab and the battery can be met simultaneously through PTC, refrigerant pipeline arrangement connection and electronic expansion valve adjustment.

Inventors

WANG SONGLIN
LI HANG
ZHOU HUI
QIAN GUOXIAN

Assignees

苏州绿控传动科技股份有限公司

Dates

Publication Date: 20260505
Application Date: 20260206

Claims (6)

1. The integrated heat management unit is characterized by comprising a liquid cooling unit for refrigerating or cooling a cab and a battery, wherein the liquid cooling unit is provided with a refrigerating pipeline, a heating pipeline and a self-circulation pipeline, and can be freely switched among a refrigerating mode, a heating mode and a self-circulation mode.
2. The integrated thermal management unit of claim 1, wherein said liquid cooling unit comprises: A cold water unit for providing cold water for the compressor and receiving fluid of the throttling and depressurizing unit; the compression unit is used for compressing fluid, and the fluid in the evaporation unit and the water chiller is compressed by the compression unit and enters the condensation unit; the condensing unit is used for releasing heat and liquefying the fluid, and the liquefied fluid is conveyed into the evaporation single ring and the cold water machine through a pipeline; The water pump is used for pumping the fluid heated by the PTC heating unit into the heat radiating unit; A throttling and depressurizing unit for throttling and depressurizing the liquefied fluid; The warm air water pump is used for heating fluid and pumping the fluid to the PTC heating unit for heating; The battery water pump is used for pumping the fluid added by the PTC heating unit into the water chiller; The heat dissipation unit is used for dissipating heat of the condensing unit and the radiator; and a PTC heating unit.
3. An integrated thermal management unit according to claim 1, wherein: The refrigerating pipeline comprises a compressor, a condensing unit, a throttling and depressurization unit, an evaporator and a water pump, and is connected through pipelines in sequence, and the heat dissipation unit dissipates heat for the condensing unit.
4. The integrated thermal management unit of claim 3, wherein said self-circulation pipeline comprises a water pump and a heat dissipation unit, said heat dissipation unit is a water cooling unit for water from which said water pump jumps.
5. The integrated thermal management unit of claim 4, wherein said heating circuit comprises a PTC heating element, a battery water pump, a warm air water pump, and a heat dissipating unit, said heat dissipating unit dissipating heat from said PTC heating element.
6. The integrated thermal management unit of any one of claims 1-5, wherein said cold water unit is a cold water machine, said condensing unit is a condenser, said compressing unit is a compressor, said throttle and pressure reducing unit is an electronic expansion valve, and said heat dissipating unit is an electronic fan.

Description

Integrated heat management unit Technical Field The invention belongs to the technical field of heat management, and particularly relates to an integrated heat management unit. Background With the development of electric vehicles and intelligent driving vehicles, the complexity of the thermal management system thereof increases dramatically. Conventional vehicles typically have separate cabin air conditioning systems (HVAC), battery thermal management systems, and electric drive cooling systems, each of which is administrative, with problems of component redundancy, high energy consumption, large layout space, low synergy efficiency, and the like. Especially when the multiple demands such as low-temperature heating of the battery in winter, high-temperature cooling of the battery in summer, comfort adjustment of a cab and the like are met, the optimal distribution and utilization of energy are difficult to realize by the discrete system, and the energy efficiency and the endurance mileage of the whole vehicle are affected. Therefore, a highly integrated thermal management unit is needed, which can integrate functions of refrigeration, heating, waste heat utilization, natural cooling and the like, and realize accurate and efficient thermal management of a cockpit, a battery pack and even other electrical appliances through intelligent mode switching. Disclosure of Invention Aiming at the defects of the prior art, the invention aims to provide an integrated thermal management unit. In order to achieve the aim of the invention, the integrated heat management unit comprises a liquid cooling unit for refrigerating or cooling a cab and a battery, wherein the liquid cooling unit is provided with a refrigerating pipeline, a heating pipeline and a self-circulation pipeline, and can be freely switched among a refrigerating mode, a heating mode and a self-circulation mode. Further, the liquid cooling unit includes: A cold water unit for providing cold water for the compressor and receiving fluid of the throttling and depressurizing unit; the compression unit is used for compressing fluid, and the fluid in the evaporation unit and the water chiller is compressed by the compression unit and enters the condensation unit; the condensing unit is used for releasing heat and liquefying the fluid, and the liquefied fluid is conveyed into the evaporation single ring and the cold water machine through a pipeline; The water pump is used for pumping the fluid heated by the PTC heating unit into the heat radiating unit; A throttling and depressurizing unit for throttling and depressurizing the liquefied fluid; The warm air water pump is used for heating fluid and pumping the fluid to the PTC heating unit for heating; The battery water pump is used for pumping the fluid added by the PTC heating unit into the water chiller; The heat dissipation unit is used for dissipating heat of the condensing unit and the radiator; and a PTC heating unit. The device also comprises a plurality of three-way electromagnetic valves or multi-way valves, which are used for switching the flow paths of the cooling liquid according to the operation mode; the above components are connected by piping according to the fluid flow sequence. According to the integrated heat management unit, the compressor supplies cold energy to the battery and the cab at the same time, and the cooling/heating requirements of the cab and the battery can be met at the same time through PTC, refrigerant pipeline arrangement connection and adjustment of the electronic expansion valve. Further, the refrigerating pipeline comprises a compressor, a condensing unit, a throttling and depressurization unit, an evaporator, a water pump, a cab warm air core body (warm core) and a battery pack heat exchange plate, which are connected through pipelines in sequence, and the heat dissipation unit dissipates heat for the condensing unit. The cooling liquid loop is switched to flow through the evaporator and the cooling coil in the battery pack/cab air conditioning box, the specific working flow is that a compression unit (compressor) is started to compress gaseous refrigerant into high-temperature high-pressure gas, the refrigerant enters a condensation unit (condenser), a heat dissipation unit (fan) operates to accelerate air convection, the refrigerant releases heat and liquefies, the liquid refrigerant is throttled and depressurized by a throttle depressurization unit (electronic expansion valve) to form a low-temperature low-pressure gas-liquid mixture to enter the evaporator, a water pump drives the cooling liquid to circulate, the cooling liquid exchanges heat with the refrigerant in the evaporator, the cooling liquid flows through a part to be cooled after absorbing heat to cool, and the refrigerant flows back to the compression unit (compressor) to complete the refrigeration cycle. The system is the medium of heat transfer. Further, the self-circulation pipeline comprises a water pump