Kuti uwane simba rekuchengetedza uye kuchengetedza kwezvakatipoteredza, lithium-ion bhatiri shanduko, ndiyo mutsauko bvunzo nzira?

2022/04/08

Munyori: Iflowpower -Inotakurika Power Station Mutengesi

Nekukurumidza kusimudzira mbozha mbozha, smart wireless zvishandiso uye mota dzemagetsi, kudiwa kwemusika kwemabhatiri e lithium kuri kuramba kuchiwedzera, uye kugona kwekugadzira kwemabhatiri e lithium kuri kuramba kuchikwira. Panguva imwecheteyo, nekuda kwekuda kwekuchengetedza simba uye kuderedza kubuda, iyo lithium bhatiri inogadzirwa nemakemikari, kubhadharisa, kubuda, uye nhamba huru yemhinduro yesimba, simba rekuburitsa re lithium bhatiri, mhinduro kudzokera kune magetsi. , uye mamwe mabhatiri ekuwana simba rekuchengetedza uye kuchengetedza kwezvakatipoteredza. Kuti unyatsowana huwandu hwe lithium bhatiri, izvo zvinodikanwa zvekukanganisa kweyezvino voltage kuyerwa kwechaji uye kuburitswa kwe lithium bhatiri zvakare zvakavandudzwa zvakanyanya, uye vatengi vazhinji vanofanirwa kusvika makumi mashanu muzana eiyo yekukanganisa, kuitira kuti. iyo yese yekuyera kutonga inodzorwa.

Izvo zvinodikanwa zvekukanganisa zveamplifier, ADC, uye DAC mudunhu zvakare inovandudza. Kazhinji, iyo yakazara simba mhinduro mhando lithium bhatiri yakakamurwa kuita 3-level chimiro. Sezvinoratidzwa pazasi: Yekutanga nhanho ndeye 220, 380VAC kusvika 400-500VDC nzira mbiri inoshandura, yechipiri nhanho inoshandura nzira mbiri ye400VDC kuenda ku12VDC, yechitatu-level 12VDC kuenda ku5VDC nzira mbiri inoshandura, kuchaja uye kuburitsa iyo bhatiri zvakananga.

Iyo chaiyo simba inoenderana nebhatiri kuchaji uye kubuda ukuru uye nhamba yemabhatiri. NeTI's C2000TMS320F280XX, zviri nyore kushandisa nhanho yekutanga neyechipiri yekushanda, uye yekutanga nhanho uye yechipiri nhanho inogona kubatanidzwa, uye 220VAC kusvika 12VDC inogona kuwanikwa zvakananga, kuwedzera kuderedza Chen Ben. Kune maviri-nzira kushandura mapango echitatu 12VDC kusvika 5VDC, iyo simulation loop control scheme inowanzogamuchirwa, uye isu tichaunzawo C2000 chirongwa chedhijitari sumo.

Nhamba iri pamusoro ndeyeTi's simulated loop control scheme referensi dhizaini, uye zvakare iri discrete mudziyo chirongwa icho chiri kudhura-chinoshanda kupfuura vazhinji vatengi. TL594 inoshandisa PWM kutonga, LM5106 iri hafu-bhiriji MOSFET drive. LM5060 ndeye bhatiri anti-reverse control.

Yakakwira-chaiyo ikozvino voltage kuunganidzwa uye loop kugadzirisa, kunyanya INA225 uye OPA180 kuita. INA225 ndeye yakatsaurirwa ikozvino detector amplifier yakabatanidzwa neyekunze kuwana resistors, inopa yakagadziriswa kuwana inobuda, ichipa yakanaka kwazvo tembiricha inoyangarara maitiro uku ichirerutsa maseketi; uye INA225 ndeyekuita otomatiki yenzira mbiri ikozvino kuona pasina mamwe masaini ekudzora Zviri nyore kushandisa. OPA180 inozvigadzika, yakadzika tembiricha inoyangarara, ita PID kugadzirisa uye CV, CC kutonga.

Yekunze ADCADS1248 ndeye 24-bit D-SADC yekuunganidza magetsi emagetsi ekuchaja uye kuburitsa, kwete kutora chikamu mukutonga loop. ADS1248 inogona kuyera ikozvino voltage ye4-channel bhatiri machaji, kana ukawedzera ekunze switching, unogona kuyera zvakanyanya, kuwana zvirinani mutengo kuita. Iyo DAC80004 ndeye 16-bit DAC yekuseta voltage ikozvino yekuchaja uye kubuda.

Yayo zero kukanganisa ishoma pane 2mV, iyo inogona kuwana yakaderera yekuchaja ikozvino pachikumbaridzo marongero. Chinokosha kune iyi referensi dhizaini kudzora kunodziya. Hukuru hweyakadzika-tembiricha inoyangarara maitiro inonyanya kukosha.

Ti's INA225, INA240 yakanaka kwazvo yakaderera tembiricha yekudonha yekuona yakakosha amplifiers, uye kukanganisa kwekuwana kuri kushoma pane 2.5ppm. Zvakare, tembiricha yesampling resistor inotaridzawo zvakananga tembiricha yehurongwa, 20 ppm sampling kuramba yave yakanaka kwazvo.

Kana sampling yazvino, kupikisa isimba rekupisa sosi, izvo zvinokonzeresa kukwira kwekushisa kwePCB yakatenderedza, kunowedzera kushatisa tembiricha. Iko kukanganisa, saka PCB ndiro ndiro yesampling resistors yakakosha. TI's referensi dhizaini - PMP40182's data uye test data yakaiswa paInternet, pane chikonzero chekuenda kune webhusaiti yepamutemo yeTi kuti utore.

Nekuzivikanwa kweTi's C2000DSP, mainjiniya akawanda akaedzawo kushandisa C2000 kuwana nzira mbiri bhatiri kuchaja uye kuburitsa kutonga kwe12V kusvika 5V, 10A, nokudaro vachiwana iyo link yese, kubva ku220VAC kuenda ku5VDC yakazara dhijitari nzira mbiri kutendeuka. . Dhiyagiramu yechirongwa che12V kusvika ku5VDC bidirectional DC-DC yeC2000. Iyo yazvino TMS320F2837X, CC, CV loop control inoshandiswa neTi, iyo inoshandiswa neC2000 software.

Iyo yakakwirira-yakarurama PWM (HRPWM) yeF2837X inogona kuwana yakakwirira-yakarurama (> 16 bits) yeDAC + PWM basa, hapana kunze kweDAC; F2837X ichiri Integrated multiple 16-bit ADCs, hapanawo kunze kweADC, kungoonekwa kwekunze ikozvino uye kukura. NeF2837X dhizaini, inogona kurerutsa dhizaini yedunhu, ichipa kuvimbika kwepamusoro uye tembiricha inoyangarara hunhu. Imwe F2837X inogona kunge yakakwira, asi F2837X inogona kutsigira kuchaji uye kubuda kwemabhatiri akawanda, ayo akadzikira pachiteshi chega chega.

Kazhinji, TI inogona kupa kupera-kusvika-kumagumo seti yakazara yezvigadziriso zvemazuva ano mabhatiri-akavakirwa zvikamu zvekubatsira vatengi kugadzirisa zvine chekuita nehunyanzvi nyaya mukutsvaga nekusimudzira, uye kusundira zvigadzirwa kumusika nekukurumidza zvakanyanya.

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