Guangzhou supercapacitor

Product introduction:     

      Guangzhou super capacitor generally refers to double-layer capacitor. Electrical Double-Layer Capacitor is a kind of super capacitor and a new type of energy storage device. The double-layer capacitance is between the battery and the capacitance, and its huge capacity can be used as a battery completely.

Product Specifications:

Product size:

Product display:

Product use:

Product packaging:

Product application scope:

       The pulse power performance, long service life and reliable operation in extreme temperature environment of supercapacitors are fully suitable for those applications requiring repetitive electric energy pulses in a fraction of a second to a few minutes, making them energy storage and power transmission solutions for transportation, renewable energy, industrial and consumer electronics and other applications, such as electric vehicles (EV/HEV), military Light rail, aviation, electric bicycles, backup power supply, power generation (wind power generation, solar power generation), communication, consumer and entertainment electronics, signal monitoring RAM, detonators, automobile recorders, intelligent instruments, vacuum switches, digital cameras, motor drives, intelligent three meters, UPS, security equipment, communication equipment, flashlights, water meters, gas meters, taillights, small household appliances and other fields have broad market prospects.

Test method:

1. Electrostatic capacity test method:

(1) Test principle

The electrostatic capacity of supercapacitor is measured by the method of constant current discharge of the capacitor and calculated according to the formula. C=It (U1-U2), where: C - electrostatic capacity, F; I - Constant discharge current, A; U1, U2 - voltage, V; Discharge time required from t-U1 to U2, S

(2) Test procedure

Charge the capacitor with a current of 100A until the capacitor is charged to the working voltage and the voltage is constant for 10 seconds. Then discharge the capacitor with a current of 100A, taking U1 as 1.2VU2 as 1.0V. Record the discharge time within the voltage range, the total circulating electrostatic capacity, and take the average value.

2. Stored energy test

(1) Test principle:

The energy test of super capacitor is carried out by discharging the capacitor to 1/2 of the working voltage at constant power within the voltage range given by the capacitor. The output energy W of capacitor is obtained from the relationship between constant discharge power P and discharge time T, that is, W=P. T

(2) Test procedure

Charge the capacitor to the working voltage with a constant current of 100A, and then keep it constant until the charging current drops to the specified current (traction type 10A, starting type 1A). After 5 seconds of standstill, discharge the capacitor to 1/2 of the working voltage with a constant power, record the discharge time and calculate the value. Cycle the measurement for 3 times and take the average value.

3. Equivalent series resistance test (DC)

(1) Test principle

The internal resistance of the capacitor is measured according to the sudden change of voltage within 10ms after the capacitor disconnects the constant current charging circuit. In the formula: R-internal resistance of capacitor; U0 - Voltage before capacitor cut-off charging; Ui - Voltage within 10 ms after switching off charging; I - Cut off the current before charging.

(2) Measuring process

Charge the capacitor with a constant current of 100A, disconnect the charging circuit when 80% of the charging working voltage is reached, use a sampling machine to record the voltage change within 10 ms after the capacitor is powered off, calculate the internal resistance, repeat for 3 times, and take the average value.

4. Leakage current test

After the capacitor is charged to the rated voltage with a constant current of 100A, the capacitor is charged at this voltage for 30min at a constant voltage, and then it is left open for 72h. In the first three hours, record the voltage value every minute, and in the remaining time, record the voltage value every ten minutes.

Calculate the self discharge energy loss, SDLF=1 - (V/VW) 2, and the calculation time points are respectively 0.5,1,8,24,36,72h

Note: The voltage tester must have high input impedance to minimize the sound of the film.

使用事项：

超级电容器不可使用在如下状态：

1) 超过标称温度的温度

当电容器温度超过标称温度时，将会导致电解液分解，同时电容器会发热，容量下降，

而且内阻增加，寿命缩短。

2) 超过额定电压的电压

当电容器电压超过标称电压时，将会导致电解液分解，同时电容器会发热，容量下降，

而且内阻增加，寿命缩短。所以降低使用电压可提高使用寿命。

3) 逆电压或交流电压的加载

1.周围温度对超级电容器的影响

超级电容器的使用寿命受使用温度的影响，一般情况下，使用温度提升10℃，超级电容器的寿命会缩短一半，请尽量在低于最高使用温度的低温环境下使用。超过最高使用温度使用的话，可能会造成特性急剧劣化，破损。

超级电容器的使用温度不仅要确认设备周围温度，内部温度，还要确认设备内发热体（功率晶体管、电阻等）的放射热，纹波电流引起的自行发热温度。此外，还请勿将发热体安装在超级电容器的附近。

2.请按电容器的正负极标识正确使用。

3.请避免在以下环境中使用超级电容器。

a) 直接溅水、盐水及油的环境、或处于结露状态、充满着气体状的油分或盐分的环境。

b) 充满着有害气体（硫化氢、亚硫酸、氯、氨、溴、溴化甲基等）的环境。

c) 溅上酸性及碱性溶剂的环境。

d) 阳光直射或有粉尘的环境。

e) 遭受过度的振动及冲击的环境。

4.在焊接过程中要避免使电容器过热（1.6mm的印刷线路板，焊接时应为260℃，时间不超过5s）。

5.请避免在超级电容器的引出极间或连接板焊点间进行电路配线。

6.过电压及超过工作温度范围等超出额定条件使用时，可能导致压力阀动作，电解液会喷出。因此，请采用已考虑到此异常状况可能发生的设计方法。

7.快速充放电时，充电开始时、放电开始时，会产生由内部阻抗导致的压降(也叫IR降），所以，请采用已考虑到电压变化幅度的设计方法。

8.功率型大容量产品（约10F以上产品）充电状态下如果端子短路，会有数百安培的电流流过，危险。请不要在充电状态下进行安装和拆卸。

9.不要把电容器放入已溶解的焊锡中，只在电容器的导针上粘焊锡。不可让焊接用焊棒接触电容器热缩管。

10.安装后，不可强行扭动或倾斜电容器。

11.超级电容器串联使用时，存在单体间的电压均衡问题。