Li. Fe. PO 4 Li-ion battery—— New pattern、Safe、EV power Li-ion battery
Characteristic of Li. Fe. PO 4 n n n Li. Fe. PO 4 material is safe than Li. Co. O 2 & Li. Mn 2 O 4 for it’s stable structure can be kept very well under continuous charging & discharging situations. The superior high temperature & storage performance make Li. Fe. PO 4 the most suitable one for Li-ion battery positive material. Longer than 1000 cycle life is more suitable for application use.
Characteristic of Li. Fe. PO 4 n n n With a higher capacity reaches 170 m. Ah, Li. Fe. PO 4 much more better than Li. Co. O 2’s 145 m. Ah & Li. Mn 2 O 4’s 148 m. Ah per gram in characteristic. Li. Fe. PO 4’s discharge plateau is more even than due to it’s lower discharge voltage, which is 3. 2~3. 3 V, lower than normal Li. Co. O 2 & Li. Mn 2 O 4 material’s 3. 6~3. 7 V. The superexcellent high current discharge performance can be used under 7 C’s continuous & 20 C’s instant situations.
Characteristic of Li. Fe. PO 4 n With the abundant Fe & P resources & low cost, Li. Fe. PO 4 is recognized as the prior positive material for electric power application by the Li-ion battery industry.
Li. Fe. PO 4/Li. Co. O 2/Li. Mn 2 O 4 performance comparison Li. Fe. PO 4 Li. Co. O 2 Li. Mn 2 O 4 170 145 148 Discharge plateau （V） 3. 2~3. 3 3. 6~3. 7 Cycle life >1000 cycle >500 cycle >300 cycle Hi-temp performance（℃） >75 0~45 Theoretic capacity per gram（ m. Ah/g） Safety Hi-current discharge Superior 10 C>5 min Instant>20 C Normal 10 C>5 min Instant>25 C Better Worse
Li. Fe. PO 4 Li-ion battery HLP 18650 P(1200 Mah) n HLP 18500 P(1000 Mah) n
Li. Fe. PO 4 Li-ion battery performance（ 18650/1200 m. Ah） n Cycle life（1 C 5 A charge/7 C 5 A discharge）
Li. Fe. PO 4 Li-ion battery performance（ 18650/1200 m. Ah） n Cycle life（Hi-temp. 60 ℃ 1 C charge/discharge）
Li. Fe. PO 4 Li-ion battery performance（ 18650/1200 m. Ah） n Discharge curve
Li. Fe. PO 4 Li-ion battery performance（ 18650/1200 m. Ah） n High current discharge performance
Li. Fe. PO 4 Li-ion battery performance（ 18650/1200 m. Ah） n Safety（Overcharge test with 3 C 5 A/10 V）
Li. Fe. PO 4 Li-ion battery performance（ 18650/1200 m. Ah） n Safety（Heat shock test in 150℃ 30 MIN）
Li. Fe. PO 4 Li-ion battery performance（ 18650/1200 m. Ah） n Safety（short circuit test）
Li. Fe. PO 4 Li-ion battery performance（ 18650/1200 m. Ah） n Safety（Needle test）
Li. Fe. PO 4 Li-ion battery performance（ 18650/1200 m. Ah） n n Safety（Impact test） Conduct free drop impaction with 10 kg hammer on the fully charged batteries fixed in the test platform The surface temperature reached 89 & 99 after the test then the temperature slow down, no fire & explosion occurred. The battery passed impact test. See the demo…….
Li. Fe. PO 4 Li-ion battery performance（ 18650/1200 m. Ah） n Hi-temp. short circuit（60 ℃）
Safe Li. Fe. PO 4 Li-ion battery n n Demo of of VALENCE product performance crush test needle test impact test
Application of Li. Fe. PO 4 Li-ion battery in electric tools n Comparison of Hypercell battery & SONY battery （Black & Decker LI 3000 mode electric tools ） Battery type Capacity 18650 1200 m. A h #of Cell Wor king Volt age Max Curr ent Min Curr ent Initi al Curr ent Chargi ng current Char ging Volt age Discharg 1 3. 6/3. 2 V 9 A 2 A 3. 5 A 270 m. A 4. 2 V 2. 5 V/2. 0 V e cut-off voltage
Application of Li. Fe. PO 4 Li-ion battery in electric tools n Black & Decker LI 3000 mode electric tools
Application of Li. Fe. PO 4 Li-ion battery in electric tools n SONY battery 0. 5 C 1 C 5 C 10 C 1# 1132 m. Ah 1128 m. Ah 1102 m. Ah 1106 m. Ah 2# 1121 m. Ah 1117 m. Ah 1109 m. Ah 1100 m. Ah 1# 1 C/0. 5 C=99. 6%， 5 C/0. 5 C=97. 3%， 10 C/0. 5 C=97. 7% 2# 1 C/0. 5 C=99. 6%， 5 C/0. 5 C=98. 9%， 10 C/0. 5 C=98. 1%
Application of Li. Fe. PO 4 Li-ion battery in electric tools n Hypercell battery 0. 5 C 1 C 5 C 7 C 10 C 1# 1341 1353 1339 1255 2# 1280 1286 1285 1262 1195 1# 1 C/0. 5 C= 100. 7% 5 C/0. 5 C=100. 9% 7 C/0. 5 C=99. 9% 10 C/0. 5 C=93. 1% 2# 1 C/0. 5 C=100. 5% 5 C/0. 5 C=100. 4% 7 C/0. 5 C=98. 6% 10 C/0. 5 C=93. 4%
Application of Li. Fe. PO 4 Li-ion battery in electric tools n n Except for the discharge performance in 10 C 5 A status is a little lower than SONY product, Hypercell battery’s capacity is about 10 percent higher than SONY product. The test shows that Hypercell 18650 battery’s application test time is 46 minutes, while SONY product’s time is only 42 minutes with the 2 A current unload test & 9 A current loaded test, 3. 5 A current start up test status.
Conclusion n There will be a great transform in electric application Li-ion with Li. Fe. PO 4 material’s superior low cost、Safety、 Heat stable and discharge characteristics etc.
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