【正文】 en ? 動力電池的使用壽命與成本 ? 如何評測動力電池的使用壽命 ? 現(xiàn)場檢測電池的壽命狀態(tài)（ SOH） Institute of New Energy Technology, INET, Tsinghua University 鋰離子動力電池的使用壽命 務(wù) w. 20 杰 1 汽 1 騰 to ev t. co m 杰 1 汽 20 會 車動 ? PHEV battery likely to deepcycle each day driven: 15 yrs equates to 40005000 deep cycles w 力 ? Also need to consider bination of high and low frequency cycling and calendarwlife 電池 to 研討 ev 會 t. 電池循環(huán)壽命 70% 50% 4000 Data presented by Christian Rosenkranz (Johnson Controls) at EVS 20, 2022 Institute of New Energy Technology, INET, Tsinghua University 1 騰 務(wù) ge p en co m 杰 1 汽 會 車動 ww 力電 52% . p o t e g 池 討 EV e 會 nt om Institute of New Energy Technology, INET, Tsinghua University $4,005 $2,865 $2,919 $3,002 $1,998 $1,992 $2,004 $2,020 $2,079 $2,407 $2,454 $2,433 $5,117 $8,433 $663 $ $2,000 $4,000 $6,000 $10,000 $8,000 $14,000 $12,000 $18,000 $16,000 CV HEV PHEV20 PHEV40 transmission engine 25% 電池占電動車成本比例 Projected Retail Powertrain Costs Midsize Sedans 1) including manufacturer and dealer markups 2) all ponent costs assume projected status charger/plug battery 40% motor/inverter 1 騰 務(wù) w 研 ve 20 60% $663 .c 動力電池的使用壽命 杰 1 汽 20 會 車動 ww 力電 ? 電池的成本占整個(gè)電動車成本的 25~60%。是一個(gè) ge 池研 p 討會 非常重要的零部件。 en ? 車的使用壽命： 1015年 ? 動力電池目前的使用壽命是 37年， LG化學(xué)聲稱可 以有 1015年的壽命保證。 ? 因此大幅度地延長動力鋰離子電池的使用壽命， 使之達(dá)到與電動車的壽命相當(dāng)，是目前動力鋰離 子電池發(fā)展的關(guān)鍵問題。 ? 需要?jiǎng)恿﹄姵厥褂脡勖u測技術(shù)做支撐。 Institute of New Energy Technology, INET, Tsinghua University 1 騰 務(wù) w. to ev t. co m Ohmic Resistance [?] Ohmic Resistance [?] Ohmic Resistance [?] 會 車動 ww 力 temperature 電 研 ge 池 p 討會 en t. lar ge Hi gh de Cycles 50 100 150 200 250 300 350 400 450 Cycles Institute of New Energy Technology, INET, Tsinghua University 1 1 Effects of charging/discharging depth 2 1 0 0 50 100 150 200 250 300 350 400 450 Cycles 0 50 100 150 200 250 300 350 400 450 ep ? 影響動力電池的使用壽命的因素 – 溫度 – 電流 – 充放電深度 動力電池的使用壽命評測 務(wù) Effects of charge current Effects of w. 20 杰 1 汽 1 騰 2 to ev co m Internal Resistance Voltage [V] Current [A] R=ΔV/ΔI 動力電池的使用壽命評測 杰 1 汽 20 會 車動 ww 力電 ge 池研 p 討會 en t. Degradation 3500 Remaining life Institute of New Energy Technology, INET, Tsinghua University Temperature of a battery 0 772 500 500 1500 2500 4500 2500 1500 Voltage response/V Current/A Day Present Battery *BMS: Battery Management System **PLC: Programmable Logic Controller Battery Temperature Battery Voltage Battery Current BMS* Controller (PLC**) Internal resistance degradation rate Remaining battery life (Estimated) Monitor (ex. Based on an Internal resistance degradation rate) 1623 2510 3410 4197 5022 Time [s] t Drate ? kt x ?1 Degradation rate of Internal resistance Target Accuracy: 10% Lifetime judgment criteria Degradation rate (Present) 1 (Estimated) 1 騰 務(wù) w. (ex. Based on the detection of an internal resistance status) to ev co m 杰 1 汽 20 會 車動 ww 力電 ge 池研 p 討會 en Institute of New Energy Technology, INET, Tsinghua University 58 1 騰 務(wù) w. to ev t. co m