优惠供应7.4V18650扩音器电池

5.1  容量

Capacity

标称容量Rated Capacity：2000MAH（0.2CA放电                 Discharge）

*小容量Capacity(min):2000mAh(0.5CA放电Discharge)

5.2  标称电压

Rated Voltage

7.4V

5.3  电池内阻Internal Resistant

 ≤200mΩ  (with PTC)

5.4  放电终止电压Discharge End Voltage

5.50V

5.5  充电上限电压Charge Upper Limit Voltage

8.40&plu*n;0.02V

5.6  标准充电电流Standard Charge Circuit

0.5C A

5.7  快速充电电流Fast Charge Circuit

1C A

5.8  标准放电电流Standard Discharge Circuit

0.5C A

5.9  快速放电电流Fast Discharge Circuit

1C A

5.10 *大放电电流Discharge Circuit (max)

2C A

5.11 电池重量Weight

96&plu*n;1g

5.12 *大尺寸Dimension(max)

厚度(φ)   :  18.3mm 宽度:36.6mm

高度(H)   :  65.0mm  （参见附图1）

                       (see figure 1)

5.13 工作温度Operational Temperature

充电charge   ：0 ~ 45℃;

放电discharge  ：-20 ~ 60℃

5.14 贮存温度Storage Temperature

1个月内within a month  ：-5 ~ 35℃

6个月内within six months ：0 ~ 35℃

6.1标准充电

Standard Charge

恒流恒压充电(CC/CV)

constant circuit and constant voltage charge

恒流constant circuit   ：1000mA

上限电压upper limit voltage：8.40V

截止电流end circuit：20mA

6.2标准放电

Standard Discharge

恒流放电(CC) constant voltage discharge

恒流constant circuit   ：1000mA

终止电压end voltage：5.50V

项目Items

测试程序Testing Procedure

标准Requirements

8.1.1标称电压Rated Voltage

电池按6.1充电后，按6.2放电过程的平均工作电压

Charge according to 6.1, then calculate the average voltage during discharge process according to 6.2

   7.4V

8.1.2放电性能Discharge Performance

电池按6.1充电后1小时内以0.5CA恒流放电到5.50V

Charge according to 6.1, then discharge within 1 hour with constant circuit of 0.5CA to the end voltage is 5.5V

≥120min

电池按6.1充电后1小时内以1.0CA恒流放电到5.5V

Charge according to 6.1, then discharge within 1 hour with constant circuit of 1.0CA to the end voltage is 5.5V

≥57min

8.1.3循环寿命Cycling Life

在环境温度20&plu*n;5℃的条件下，以0.5CA先恒流充电至上限电压，再恒压充电至充电电流≤20mA；搁置0.5h后以0.5CA放电至5.5V，放电结束后搁置0.5-1h后进行下一个循环，直至连续两次放电时间小于72min，则认为寿命终止。

Under the ambient temperature of 20&plu*n;5℃, charge with a constant circuit of0.5CA to upper limit voltage, then charge with constant voltage till the circuit is no more than 20mA; lay the battery aside for 0.5 hour, then discharge with 0.5CA till the end voltage is 5.5V; lay the battery aside for 0.5-1 hour before next cycle; when the discharge time of the consecutive discharge is both lower than 72 minutes, the cycle life is over.

≥500次Times

8.1.4荷电保持能力

Capacity Holding

按6.1充电,在温度20&plu*n;5℃的环境下放置28天，然后以0.2CA放电至5.5V,电池放电容量≥90%标称容量。

Charge according to 6.1, lay the battery aside for 28 days in the ambient temperature of 20&plu*n;5℃,then discharge with0.2CA till the end voltage 5.5Vappears, the capacity given out should be no less than 90% of the rated capacity.

容量Capacity≥1800mAh

8.1.5存贮Storage

自生产日期到测试日期不足3个月的电池按6.1充电方式充入40%－50%的容量,然后在环境温度20&plu*n;5℃,相对湿度45%－85%的环境中存贮12个月，存贮期满后按6.1充满电，0.2CA放电至5.5V。

As for the battery life less than 3 months, charge into 40-50% of the rated capacity according to 6.1, then store for 12 months under a condition of ambient temperature of 20&plu*n;5℃ and 45%-85% RH; after storage, charge according to 6.1, then discharge with0.2CA till the end voltage is 5.5V.

放电时间Discharge Time≥4h.

 8.2.1短路Short Circuit

电池按6.1充满电后,将接有热电偶的电池置于通风橱中，短路其正负*（线路总电阻不大于50mΩ），试验过程中监控电池温度，当电池温度低于其峰值10℃时，结束试验。

After charging according to 6.1, put a battery connected with a thermocouple into ventilation cabinet, short circuit “ ” and “-”(overall resistant of the loop is no more than 50mΩ); monitor the battery temperature during the testing process, when the battery temperature is lower than the peak value for 10℃, the test is over.

电池不起火,不*。电池表面温度小于150℃。

No fire, no explosion. Surface temperature is lower than 150℃.

8.2.2过充

Overcharge

电池按6.1充满电后，将接有热电偶的电池放置于通风橱内；连接正负*于一恒流恒压电源，调节电流至3CA，电压为10V，然后对电池进行充电，直至电池电压为10V，电流接近0A。实验过程中监测电池温度变化，当电池温度下降到比峰值低约10℃，结束实验。

After charging according to 6.1, put a battery connected with a thermocouple into ventilation cabinet, connect the “ ” and “-” with a constant circuit and constant voltage power, adjust the circuit to 3CA and the voltage to 10V. charge the battery till the voltage is 10V and the circuit is about to 0; monitor the battery temperature during the testing process, when the battery temperature is lower than the peak value for 10℃, the test is over.

电池不起火,

不*。

No fire, no explosion

8.2.3

重物冲击

Heavy Shock

电池放置于冲击台上,将10公斤重锤自1m高度自由落下,冲击已固定在夹具中的电池(电池受力位置参见附图4)。

Put a battery on the shock platform, let a hammer of 10kg  fall down freely from a height of 1m, shock the battery fixing in the clamp(for the position of the battery, see figure 4)

电池不起火,

不*。

No fire, no explosion

8.2.4

热冲击

Thermal

Shock

电池按6.1充电后，将电池置于热箱中，温度以（5&plu*n;2℃）/ min的速率升至150&plu*n;2℃并恒温10 分钟。

Charge the battery according to 6.1, then put a battery into a thermal box, heat with a temperature rising speed of（5&plu*n;2℃）/ min till 150&plu*n;2℃,then keep this temperature constant for 10 minutes.

电池不起火,

不*。

No fire, no explosion

8.3.1高温性能High Temperature Performance

电池按6.1充电后,在温度55&plu*n;2℃的环境下放置2小时,然后以1CA放电至5.5V,电池放电容量≥90%标称容量。

Charge the battery according to 6.1, lay the battery aside for 2 hours under a temperature of 55&plu*n;2℃,then discharge to 5.5Vwith 1CA, capacity given out should be no less than 90% of the rated capacity.

容量Capacity≥1800mAh

8.3.2低温性能Low Temperature performance

电池按6.1充满电后,在温度-20&plu*n;2℃的环境下放置16-24小时,然后以0.2CA放电至5.5V,电池放电容量≥70%标称容量。Charge the battery according to 6.1, lay the battery aside for 16-24 hours under a temperature of -20&plu*n;2℃,then discharge to 5.5Vwith 0.2CA, capacity given out should be no less than 90% of rated capacity.

容量Capacity≥1400mAh

8.3.3振动Vibration

电池按6.1充满电后，将电池安装在振动台面上，按（振动频率：10Hz～30Hz,位移单振幅：0.38mm;振动频率：30Hz～55Hz,位移单振幅：0.19mm）振动频率和对应的振幅以X,Y,Z三个方向从10Hz～55Hz循环扫频振动30min,扫频速率为1 oct/min.

Charge the battery according to 6.1, then fix the battery on the vibration platform, perform cycling sweep frequency(sweep rate is1 oct/min ) vibration on X,Y,Z axis for 30min , vibration frequency: 10Hz～30Hz,  displacement single swing: 0.38mm; vibration frequency: 30Hz～55Hz,  displacement single swing: 0.19mm.

电池外观应无明显损伤，冒烟，漏液或*，电压不低于3.6V

Battery appearance has no obvious damage, no fume, no electrolyte leakage and explosion, voltage is no less than 7.4V.

8.3.4自由跌落

Free Fall

电池按6.1充满电后，将电池由高度为（点高度）1m位置从X，Y，Z正负六个方向自由跌落，每个方向跌落1次至水泥地面上的18～20mm的硬木地板上。然后将电池以1CA电流放电至5.5V，再进行不少于3个的充放电循环（按6.1充电，1CA放电）。

Charge the battery according to 6.1,thenlet the battery fall freely and separately along X,Y,Z axis on both directions froma height of 1m (from the lowest point to the floor) on a hard wooden floor with a thickness of 18-20mm placing on the concrete ground. Then discharge the battery with 1CA till to the voltage falls to 5.5V, and perform charge and discharge cycle for no less than 3 times (charge according to 6.1, discharge with 1CA).

电池不起火,不*。放电时间应不低于51min。

No fire, no explosion. Discharge time should be no less than 51min.