Dɛn ne CAN bɔs nkitahodi?
CAN bɔs nkitahodi
Controller Area Network (CAN) yɛ serial nkitahodi protocol bɔs a wɔde di dwuma wɔ real-bere dwumadie mu. Ɛtumi de nsɛnkyerɛnneɛ denam twisted-pair cable, coaxial cable, anaa fiber optic cable so. Esiane ne adwumayɛ a ɛkorɔn, ahotoso a ɛkorɔn, ne bere ankasa -adwuma a ɛkorɔn nti, abɛyɛ fieldbus a wɔde di dwuma kɛse wɔ wiase no mu biako. Mprempren CAN nkitahodi ne nkitahodi kwan titiriw a ɛwɔ battery management systems (BMS) mu. Wɔagye atom kɛse wɔ mfiridwuma mu anyinam ahoɔden kar BMS nhyehyɛe pii mu wɔ ɔman no mu ne amanaman ntam nyinaa, ne ɔman no mu ne amanaman ntam BMS data nkitahodi gyinapɛn ahorow mu. Wɔde RS232 ne RS485 bɔs nso di dwuma wɔ nkitahodi bi a ɛwɔ mu wɔ BMS nhyehyɛe ahorow mu.
Mfonini 8-26 kyerɛ batere nhyehyɛe a wɔde di dwuma ma anyinam ahoɔden bɔs a ɛho tew. Wɔn mu no, RS232 titiriw hu nkitahodi a ɛda titiriw control board ne host kɔmputa anaa nsa mfiri ntam, na wie nhyehyɛe a ɛfa parameters ahorow ahorow a ɛwɔ main control board ne detection board no; RS485 titiriw hu nkitahodi a ɛda titiriw control board ne detection board ntam, na ɛwie battery data ne detection board parameters a ɛda owura ne akoa board ntam no a wɔde kɔ; Wɔakyekyɛ CAN nkitahodi mu ayɛ no akwan abien, CAN1 ne CAN2. CAN1 titiriw ne kar no sohwɛfo titiriw no di nkitaho de wie battery-fata ho nsɛm a kar no nyinaa hwehwɛ no a wɔde mena; CAN2 titiriw ne kar adwinnade ne nea ɛnyɛ kar charger di nkitaho de hu battery data a wɔkyɛ na ɛma data nnyinaso ma charging control.
Battery management system (BMS) nhyehyeɛ wɔ kar dwumadie tebea mu no wɔakyerɛ wɔ Mfonini 8-27 mu. BMS no mfinimfini control module no de bere ankasa -batere tebea ho nsɛm a ɛho hia kɔma kar controller ne motor controller no denam CAN1 bɔs no so, na ɛma wotumi gye control akwan a ntease wom kɛse tom de wie adwumayɛ nnwuma yiye na ɛtrɛw battery nkwa nna mu. Bere koro no ara mu no, BMS (central control module) no nam CAN2 bɔs a ɛde ahoɔhare kɛse so no so de batere ho nsɛm a ɛkɔ akyiri kɔma onboard monitoring system no, na ɛda battery tebea ho nsɛm adi na ɛde mfomso ho kɔkɔbɔ ma, na ɛnam so ma wonya nnyinaso a wɔde besiesie battery na wɔasesa.
BMS no nhyehyeɛ wɔ ntɛmpɛ charge mode mu no wɔakyerɛ wɔ Mfonini 8-28 mu. Wɔde charger no abɔ kar a anyinam ahoɔden wom no ho ankasa. Saa bere yi, onboard high-speed CAN2 bus no di nkitaho ne charger node no, bere a afã afoforo no nsakra. Charja no de CAN2 bɔs a ɛyɛ ahoɔhare kɛse-di dwuma de te bere ankasa mu batere tebea ase na ɛyɛ nsakrae wɔ charging nhyehyɛe no mu na ama wɔanya charge a ahobammɔ wom.
