安全性能:
序号 NO. |
项目 Items |
技术要求 Technical Requirements |
测试方法及步骤 Test Methods & Steps |
1 |
过充电 Overcharge Test |
不爆炸、不起火 No explosion. No fire. |
a)电池(组)标准充电 Standard charge; b)以 45A 电流充电至 5.48V,或充电90min 后停止充电,观察 1h。 Charged to 5.48V with 45A current, or charged for 90min, observing for 1h. |
2 |
过放电 Over-discharge Test |
不爆炸、不起火、不漏液 No explosion. No fire. No leakage. |
a)电池(组)标准充电 Standard charge; b)以 45A 电流放电90min,观察 1h。 Discharged with 45A current for 90min, observing for 1h. |
3 |
短路 Short-circuit Test |
不爆炸、不起火 No explosion. No fire. |
a)电池(组)标准充电; Standard charge; b)将电池(组)正、负极经外部短路10min,外部线路电阻应小于 5mΩ,观察 1h。 Connect the cell(battery module) positive and negative terminals with wire for 10min directly. The resistance of external line should be less than 5mΩ, observing for 1h. |
4 |
针刺 Nail penetration Test |
不爆炸、不起火 No explosion. No fire. |
a)电池(组)标准充电; Standard charge; b)用 φ6mm~φ8mm 的耐高温钢针以(25±5)mm/s的速度从垂直于蓄电池极板的方向贯穿(钢针停留在蓄电池中)观察 1h。 Penetrate the cell(battery module) from the vertical direction throughout the inside plates with the φ6mm ~φ8mm needle at (25 ± 5) mm/s speed (needle stays in the battery) , observing for 1h. |
5 |
挤压 Crushing Test. |
不爆炸、不起火 No explosion. No fire. |
a)电池(组)标准充电; Standard charge; b)按下列条件进行试验: According to the following test conditions: ——挤压方向:垂直于蓄电池极板方向施压; Squeezing direction: Pressure perpendicular to the battery plates; ——挤压板形式:半径 75mm 半圆柱体,长度大于被挤压电池的尺寸,但不超过 1m; Squeezing paper shape: half cylinder with 75mm diameter, whose length is more than the size of cell,but is less than 1m. ——挤压速度:(5±1)mm/s; Squeezing speed: (5±1)mm/s; ——挤压程度:电压达到 0V 或变形量达到 30%或挤压力达到表 1 所列数值后停止挤压,保持10min; Squeezing level: Until the battery voltage becomes 0V or the deformation is to 30% or the press is to the value listing in table 1 , stop squeezing; c)观察 1h。 observing for 1h |
6 |
跌落 Drop Test |
不爆炸、不起火、不漏液 No explosion. No fire. No leakage. |
a)电池(组)标准充电; Standard charge; b)电池(组)正负端子朝下,自 1.5 米高度处自由跌落至水泥地面上,观察 1h。 the cell(battery module) drops with two terminals down from a height of 1.5m onto the cement floor freely, observing for 1h. |
7 |
加热 Heating |
不爆炸、不起火 No explosion. No fire. |
a)电池(组)标准充电; Standard charge; b) 电池(组)放入温箱中,以 5℃/min 速率由室温至 130±2℃,并保持 30min 后停止加热,观察 1h。 Put the cell(battery module) into the incubator, the temperature is up from room to 130±2℃ at the speed of 5℃/min, and stop heating after lasting for 30min,observing for 1h. |
8 |
海水浸泡 Immersing in seawater |
不爆炸、不起火 No explosion. No fire. |
a)电池(组)标准充电; Standard charge; b) 电池(组)完全没入 3.5% NaCl 溶液(质量分数)中 2 h;水深应完全没过单体蓄电池。 the cell(battery module) is submerged into 3.5(wt)% NaCl solution for 2h entirely. |
9 |
温度循环 Temperature cycle |
不爆炸、不起火、不漏液 No explosion. No fire. No leakage. |
a)电池(组)标准充电; Standard charge; b)将电池(组)放入温度箱内,温度箱温度按照表 2进行调节,循环次数 5 次,观察 1 h。 Put the cell(battery module) into the incubator, the temperature adjust according to table 2, repeating 5 times, and observing for 1h. |
10 |
低气压 Low air pressure |
不爆炸、不起火、不漏液 No explosion. No fire. No leakage. |
a)电池(组)标准充电; Standard charge; b) 电池(组)放入低气压箱内,调节试验箱中气压为 11.6 kPa,温度为室温,静置 6 h,观察 1 h。 Put the cell(battery module) into the low air pressure box, and set air pressure at 11.6 kPa, laying for 6h at room temperature, and observing for 1h. |
注:1、电池组以五支或以上单体电池串联;
2、电池安全试验参考 GB/T 31485-2015《电动汽车用动力蓄电池安全要求及试验方法》。
表1 挤压力选取标准
单体数 /n Cell number /n |
挤压力/ KN Squeezing force/ KN |
1 | 200 |
2~5 | 100×n |
>5 | 500 |
表2 温度循环试验一个循环的温度和时间
温度/℃ temperature/℃ |
时间/min time/min |
累计时间/min Adding time/min |
温度变化率℃/min Temperature change rate ℃/min |
25 | 0 | 0 | 0 |
-40 | 60 | 60 | 13/12 |
-40 | 90 | 150 | 0 |
25 | 60 | 210 | 13/12 |
85 | 90 | 300 | 2/3 |
85 | 110 | 410 | 0 |
25 | 70 | 480 | 6/7 |
产品规格:
NO. | Items | Specifications |
1 |
Charge voltage 充电电压 |
3.65V |
2 |
Nominal voltage 标称电压 |
3.2V |
3 |
Nominal capacity 标称容量 |
45Ah @ 0.33C Discharge(放电) |
4 |
Typical capacity 典型容量 |
45.5Ah |
5 |
Charge current 充电电流 |
Standard Charging: 0.33C 标准充电: 0.33C Rapid charge: 1.0C 快速充电: 1.0C |
6 |
Standard Charging method 标准充电方法 |
0.33C CC(constant current)charge to 3.65V,then CV(constant voltage 3.65V)charge till charge current decline to ≤0.033C 0.33C CC(恒流)充电至3.65V,再CV(恒压3.65V)充电直至充电电流≤0.033C |
7 |
Charging time 充电时间 |
Standard Charging: 4hours(Ref.) 标准充电: 4小时(参考值) Rapid charge: 2hours(Ref.) 快速充电: 2小时(参考值) |
8 |
Max charge current 最大充电电流 |
1.0C |
9 |
Max discharge current 最大放电电流 |
3.0C |
10 |
Discharge cut-off voltage 放电截止电压 |
2.5V |
11 |
Operating temperature 工作温度 |
Charging: 0℃~45℃ 充电: 0℃~45℃ Discharging:-20℃~60℃ 放电: -20℃~60℃ |
12 |
Storage temperature 储存温度 |
-20℃~ +60℃ |
13 |
Cell Weight 电芯重量 |
约830g |
14 |
Cell Dimension 电芯尺寸 |
Length 长度:227 mm Max Width 宽度:161 mm Max Thickness 厚度:11.0 mm Max |
充放电性能:
NO. | Items | Test Method and Condition | Criteria |
1 |
Standard Charge 标准充电 |
Charging the cell initially with constant current at 0.33C and then with constant voltage at 3.65V till charge current declines to 0.033C 先用0.33C恒流充电至3.65V,再恒压3.65V充电直至充电电流≤0.033C |
|
2 |
Rated Capacity 初始容量 |
The capacity means the discharge capacity of the cell, which is measured with discharge current of 0.33C with 2.5V cut-off voltage after standard charge. 该容量是指标准充电后,0.33C放电至2.5V截止电压所放出的容量。 |
≥45Ah |
3 |
Cycle Life 循环寿命 |
Test condition: Charge:0.33C to 3.65V Discharge:0.5C to 2.5V 80% or more of 1st cycle capacity at 0.33C discharge of Operation 测试条件: 充电:0.33C充电到3.65V 放电:0.5C放电到2.5V 当放电容量降至初始容量的80%时,所完成的循环次数定义为该电芯的循环寿命 |
≥3500次 |
4 |
Self-discharge 自放电 |
After the standard charging, storied the cells under the condition as No.4.4 for 30 days, then measured the capacity with 0.33C till 2.5V 标准充电后,在No.4.4条件下贮存30天,再以0.33C放电至2.5V所放出的容量。 |
Residual capacity >90% 剩余容量>90% |
5 |
Initial impedance 初始内阻 |
Internal resistance measured at AC 1KHz after 50% charge半充状态下,测量其AC 1KHz下的交流阻抗 | ≤1.5mW |
6 |
Cell Voltage 电芯电压 |
As of shipment. 出货状态 |
3.2V~3.4V |
7 |
Temperature Characteristics 温度特性 |
1. According to item 4.1.1, at 23±5℃. 2. Capacity comparison at each temperature, measured with constant discharge current 0.33C with 2.5V cut-off. Percentage as an index of the capacity compared with 100% at 23℃ 1.在23±5℃条件下,用4.1.1方法将电芯充电。 2.在不同温度条件下,用0.33C的电流恒流放电至截止电压2.5V。以23℃时放电容量为基准计算百分比。 |
-20℃: ≥70% 23℃: 100% 55℃: ≥96% (-20℃下截止电压2.0V) |
8 |
Storage Characteristics 储存特性 |
1. According to item 4.1.1, at 23±5℃. 2. The battery shall be stored at 55±5℃ for 7days and rested at room temperature for 1 hour then measured with constant discharge current 0.33C with 2.5V cut-off. 1. 在23±5℃条件下,用4.1.1方法将电芯充电。 2.将电池在55±5℃条件下贮存7天,然后在常温下静置1小时,用0.33C的电流恒流放电至2.5V截止电压。 |
Retained Capacity ≥85% |
单体电池立体效果图:
外形尺寸:
外形尺寸(单位:mm;未按比例)
型号:LX110161227B45
单位:mm
Item 项目 |
Specifications 尺寸标准 |
T | 11.0Max |
W | 161Max |
L | 227Max |
L1 | 40±1 |
M | 80±2 |
N | 45±1.0 |
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