12P2532X162-233A可編程模塊,KJ3222X1-BA1配置教程
在電動(dòng)汽車使用充滿電的電池之前，充電電路需要將電網(wǎng)的交流電轉(zhuǎn)為高壓直流電，同時(shí)監(jiān)測(cè)和控制整個(gè)充電過程。傳統(tǒng)的230V插座足以在一個(gè)晚上通過小型電動(dòng)汽車的充電器將汽車充滿電。家用插座提供最高2.3kW的功率，整個(gè)充電時(shí)間需要數(shù)小時(shí)。公共和快速充電站的功率超過100kW，所以充電速度比較快，大約一個(gè)小時(shí)就可充滿一個(gè)85kWh的電池。仍在開發(fā)中的超大功率充電站可以處理高達(dá)400kW的功率。
12P2532X162-233A可編程模塊,KJ3222X1-BA1配置教程這樣可以將充電過程縮短到大約十五分鐘，很適合長(zhǎng)途旅行中在短暫的休息時(shí)為汽車充電。所有主要的充電站都用直流電為電動(dòng)汽車充電。目前的標(biāo)準(zhǔn)電壓為400V，但將來可能會(huì)提升至800V。即使認(rèn)為在家庭環(huán)境中的直流電是安全的，電壓到如此之高也是會(huì)致命的，因此整個(gè)系統(tǒng)對(duì)可靠性的要求相對(duì)的也較高。
這需要牢固的插頭連接以及可靠的電子安全系統(tǒng)。為了達(dá)到這個(gè)目的，汽車電池管理系統(tǒng)和充電站之間要隨時(shí)保持通信狀態(tài)。只有當(dāng)充電器牢固地插在充電插座上，并同時(shí)發(fā)出恒定的「ok」信號(hào)時(shí)才會(huì)開始充電。如果信號(hào)中斷，充電站會(huì)立即斷開充電連接。RECOM RAC05-xxSK/480可將480VAC的相 -相電壓轉(zhuǎn)換為5或15V DC。5W轉(zhuǎn)換器的工作溫度為-40°C至+80°C以上。
RAC05-xxSK/480 AC/DC轉(zhuǎn)換器的輸入電壓最高可達(dá)528VAC，因此很容易在三相供電系統(tǒng)的任意兩相之間直接取電工作。通過RAC05-xxSK/480 AC/DC轉(zhuǎn)換器可得到一個(gè)4KVAC隔離的5VDC或15VDC，功率為5W的直流低電壓來為握手協(xié)議監(jiān)控電路供電。
不僅充電站需要徹底的監(jiān)控，對(duì)鋰電池本身也需要不斷地觀察。先進(jìn)的鋰離子電池通常被分成幾個(gè)小模組。每個(gè)模組的電流、電壓和溫度需要分別監(jiān)控，以確保充電過程中電池的安全。如果有一個(gè)模組有故障時(shí)必須可以單獨(dú)關(guān)閉它，以讓正常運(yùn)行的模組繼續(xù)供電。復(fù)雜的電池管理系統(tǒng)對(duì)延長(zhǎng)電池壽命和電池保護(hù)是至關(guān)重要的。
為此RECOM開發(fā)了一系列用于電動(dòng)汽車電池管理的1W DC/DC轉(zhuǎn)換器。每個(gè)電池模組都需要屬于自己的DC/DC轉(zhuǎn)換器來為CAN總線和電壓監(jiān)測(cè)電路進(jìn)行隔離供電。這款DC/DC轉(zhuǎn)換器的隔離高達(dá)5.2KVDC，且出廠時(shí)全部通過隔離耐壓測(cè)試。
maintainability verification: use indicator light to indicate, locate the fault point, and facilitate maintenance; If the reliability operation is verified, the operation mileage shall not be less than 10W km, and the operation time shall not be less than 1 year;
6. Other requirements: for example, for power supply interruption, drop and other requirements, the general module power supply design is difficult to meet the 10ms interruption requirements, especially for low-voltage input products, it is necessary to increase the peripheral input and output capacitance to meet the needs of customers; For example, for the short-circuit protection measures of the battery, anti reflection diodes or mechanical design are generally used to avoid this failure.
3、 Power supply selection of on-board electronic equipment
As one of the methods to prevent fault spreading, isolated power supply plays an important role in on-board electronic equipment; However, in the process of vehicle operation, there are various states, such as violent vibration state;
