弧形聚合物电池
电池特点:超厚,叠片工艺,稳定, 高倍率
容量480mAh
最大放电电流:1C, 脉冲:5C
用于跟综器, 数量不详
客户诉求:
大容量, 性能稳定
解决方案:
容量采用纯钴, 保证在此尺寸下最大容量;
性能稳定,
因为电池厚度超厚, 有6.5毫米, 以前供应商采取卷绕结构, 极片极易掉粉, 引起微短路, 导致掉电, K值不佳.
故此, 基安比工程师采用叠片结构, 解决卷绕在电池成形后, 对电池进行弯曲所产生极片掉粉的弊病.
(此叠片机可制作任何形状电池)成品电池达到客户要求:
NO
序号
Item
项目
Test Method
测试方法
Criterion
性能标准
1
Visual inspection
外观
visual inspection
目测
Not allowing any visual defects which will affect the electronic characteristics, such as leakage and damage.
不允许有影响电芯性能的外观缺陷,诸如泄漏、损坏等
2
Battery Dimension
电池尺寸
Digital Calipers
数显卡尺
Length长度:65.8mm Max
Width宽度:15.0mm Max
Thickness厚度:6.5mm Max
3
Initial Impedance
初始内阻
Internal resistance measured at AC 1KHz after 50-60% charge
半电状态下,测量其AC 1KHz下的交流阻抗
≤250mΩ
4
Rated Capacity
初始放电容量
The capacity means the discharge capacity of the cell, which is measured with discharge current of 0.2C with 3.0V cut-off voltage after the standard charge.
该容量是指标准充电后,0.2C放电至3.0V截止电压所放出的容量。
≥480mAh
5
循环寿命
Test condition:
Charge:0.2C to 4.2V
Discharge:0.2C to 3.0V
When the discharge capacity reduced to 70% of rated
capacity, Stop testing
测试条件:
充电:0.2C充电到4.2V
放电:0.2C放电到3.0V
当放电容量降至额定容量的70%时,停止测试。
The cycle times is not less than 300
循环次数不小于300 次
6
高温放电容量
A charged battery is placed in an oven for 2 hours at 80ºC±2ºC, then discharged at a 0.2C current to the termination voltage.
在80℃±2℃条件下,将标准充电后的电芯放入高温箱中2h后,再以0.2C电流放电至终止电压。
Discharge 90 percent of the
original capacity.
可放出初始容量的90%
7
Low Temperature
低温性能
A charged battery is placed in a thermal chamber for 4 hours at -10ºC±2ºC; then discharged at 0.2C to the termination voltage.
在-10℃±2℃条件下,将标准充电后的电芯放入低温箱中4h后,再以0.2C电流放电至终止电压。
Discharge 60 percent of the
original capacity.
可放出初始容量的60%(-10℃)以上
8
Electricity maintenance
荷电保持
After the standard charging, storied the cells under the condition as 20±5 ºC for 30days, then measured the capacity with 0.2C till 3.0V
标准充电后,在20±5 ºC条件下贮存30天,再以0.2C放电至3.0V所放出的容量。
Remaining capacity≥ 85%
剩余容量≥85%