Ymchwil cynnydd o cerbyd trydanol thermol rheoli
system integreiddio technoleg
Cyflwyniad i Thermol Rheoli System
Y thermol rheoli system o trydanol cerbydau esblygu o y thermol rheoli system o traddodiadol tanwydd cerbydau, a y system cyfluniad wedi hefyd yn raddol datblygu o y aelod annibyniaeth yr un thermol rheoli dolen i y cyfeiriad o integreiddio. Ers mae yn rhif injan gwastraff gwres i defnydd , ychwanegol offer yn yn ofynnol i darparu a gwres ffynhonnell pan gwresogi y teithiwr compartment. Ar hyn o bryd% 2c yn gyffredin defnyddio gwresogi dulliau mewn cerbydau trydan cynnwys cadarnhaol tymheredd cyfernod (cadarnhaol tymheredd cyfernod, PTC) gwresogydd gwresogi a gwres pwmp aer gwresogi.
Sengl oeri aer cyflyrydd % 2b PTC
Y gwrthiant o y thermistor yn y PTC gwresogydd bydd cynnydd fel y tymheredd increases, canlyniad yn a decrease in gwresogi pŵer. Felly, y PTC thermistor wedi cyson tymheredd nodweddion. Due y syml cyfansoddiad a isel pris y PTC gwresogi systemau rhan fwyaf trydanol cerbydau defnyddio un oeri aer cyflyru rheweiddio a PTC trydan gwresogydd gwresogi i cyflawni y oeri A gwresogi anghenion o y teithiwr compartment.
Gwres pwmp aer cyflyrydd+PTC
Ers PTC defnyddio trydanol gwresogi ar gyfer gwresogi, y gwresogi effeithlonrwydd is llai na 1% 2c felly hyn gwresogi dull can lleihau y cruising ystod o cerbydau trydan gan 50%. Y damcaniaethol effeithlonrwydd o gwres pympiau is yn fwy na 2c defnyddio gwres pympiau i disodli PTC gwresogi has become datblygu trend. ｡The canlyniadau o ZHANG et al. [18] sioe hynny y gwres pwmp system can arbed 41.3% 25 o egni wedi'i gymharu gyda y PTC gwresogydd system. Ers y rhan fwyaf cerbydau trydan defnydd ar hyn o bryd R134a fel gweithio hylif, pan y amgylchyn tymheredd is is �% 9210 gradd , y gwres pwmp system Y effeithlonrwydd a dibynadwyedd yn gostwng 2c felly PTC gwresogydd trydanol is dal sydd ei angen ar gyfer ategol gwresogi.
Mae'r gwres pwmp aer cyflyru system gwireddu y newid system rheweiddio, gwres, dadhumidification, dadmer a eraill moddau drwy y y falf corff. Y pedwar-ffordd gwrthdroi falf wedi wedi yn eang defnyddio yn y maes o aelwyd aer aer gyflyru, a its cais yn y gwres pwmp aer system o trydanol cerbydau can Mae yn A ateb da i problem oerydd gwrthdroad yn ystod system oeri a gwresogi. Mae hyn system ateb wedi feer rhannau, syml strwythur, a is cost. Fodd bynnag% 2c y pedair ffordd gwrthdroi falf has A A hawdd cyrydu. Uchel a isel pwysau Mae diffygion fath fel aer chwythu gan ar yr ochr sydd yn effeithio system perfformiad. Passenger car gwres pwmp aer systemau systemau bennaf defnyddio A tri-gwres cyfnewidydd ateb o un awyr agored gwres cyfnewidydd a dau dan do gwres cyfnewidwyr, a modd newid yn perfformio drwy lluosog solenoid falfiau.
A heat pump air conditioning system using R134a refrigerant can quickly heat the passenger compartment when the ambient temperature is above 0 degree . However, when operating at a lower temperature, due to the decrease in refrigerant mass flow, the evaporation heat absorption capacity is weakened; at the same time, the suction pressure decreases. , the compressor pressure ratio increases, resulting in reduced efficiency and attenuated system performance. Studies have shown that at an ambient temperature of −10 degree , the heating capacity of the heat pump air conditioning system using R134a refrigerant has severely attenuated to the point that it cannot meet the cabin heating demand. At this time, The PTC electric heater needs to be used to heat the refrigerant to meet the heating needs of the system. Wang Ying et al. used experimental methods to compare the operating characteristics of the four-way valve and three heat exchanger systems. The research results show that the three heat exchanger system is better at defrosting. ､It has more advantages in dehumidification, and the energy efficiency of the four-way valve system is 7%~15% higher than that of the three heat exchanger system.
Gwres pwmp aer cyflyrydd % 2b gwastraff gwres adferiad + PTC
Ein gwlad wedi a ehangder tiriogaeth rhychwantu a mawr tymheredd parth, felly mae'n angenrheidiol i ehangu y tymheredd ystod defnyddio gwres pwmp aer cyflyrwyr. y gwastraff o moduron a batris is a gwres gwerthfawr gwres ffynhonnell yn gaeaf. llawer gweithgynhyrchwyr a gwyddonol ymchwil sefydliadau ystyried ailgylchu rhan o gwres fel yn yn ategol gwres gwres ffynhonnell expand Application ystod o gwres pwmp aer cyflyrwyr.
The system can realize functions such as passenger compartment cooling, heating, defrosting, defogging, and dehumidification. It can also heat or cool the battery and drive motor. In addition, it can also recover waste heat from the battery and drive motor. The working principle of the system is as follows : The functions of cooling, heating, dehumidification, defrosting and defogging of the passenger compartment are realized through the switch combination of the solenoid valve of the refrigerant circuit; a battery cooler (Chiller) connected in parallel with the evaporator is added to the refrigerant circuit. When the battery or driver When the motor has cooling needs, the refrigerant flows through the secondary refrigerant of the Chiller cooling secondary circuit; when the battery or drive motor does not have a large need for heat dissipation, the state of the three-way valve can be switched to control the flow of the secondary refrigerant to transfer heat through the low temperature The radiator is discharged to the outside of the vehicle to cool down the battery or drive motor; when the battery needs heating, the PTC energizes the heating and realizes the heating function through the adjustment of the three-way valve on the refrigerant side; when the ambient temperature is low, the heat pump When the air conditioner cannot be used and the battery or drive motor needs heat dissipation, the secondary refrigerant absorbs the heat that needs to be dissipated on the battery or drive motor side. It flows through the Chiller through the three-way valve and exchanges the heat to the refrigerant side to heat the passenger compartment. The operating temperature range of the system is increased and the energy efficiency of the system is improved.
