密封阀控式铅酸蓄电池

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CATALOG

»1. BATTERY CHARACTERISTICS

»2. STRUCTURE

»3. DISCHARGE PERFORMANCE&CHARACTERISTICS

»4. CHARGING PERFORMANCE&CHARACTERISTICS

»5. SERVICE LIFE

»6.STORAGE CONDITION

»7. INTERNAL RESISTANCE RATE

»8. BATTERY CAPACITY

                                                                                                                                                                            

1. CHARACTERISTICS

· maintenance free.no need for rehydration

· highly reliable,ling service life.The special sealing structure and flame-retardant housing prevent electrolyte leakage defects,eradicating the possibility of conflagration

· high energy density,highly efficient energy output.

· low self discharge.2% discharge rate each month under 20 degree celsius

· fully charged before product delivery.electrolyte under safe condition.secure transportation.


 wide tempreture-range of application.standard batterytempreture range:-40 degree cesius to 50degree celsius TW AGM(-40℃~50℃),high tempreture series ranging from -40 degree celsius to 70 degree celsius  TWH series(-40℃~70℃)。

·no need for equilibrium charging. our battery enjoys phenomenal internal-resistance,power-capacity, and float-charging characteristics,ensuring that there is no requirement for equilibrium charging.

·   splendid performance recovery ability.if one fully discharges the battery , set it aside after 30days,and then recharge it again, it could still return to its original state

· durable bronze terminal,easy installation,outstanding electricity conductivity

· the whole production line is under computer system control,ensuring product quality

next page:battery structure

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CATALOG

»1. BATTERY CHARACTERISTICS

»2. STRUCTURE

»3. DISCHARGE PERFORMANCE&CHARACTERISTICS

»4. CHARGING PERFORMANCE&CHARACTERISTICS

»5. SERVICE LIFE

»6.STORAGE CONDITION

»7. INTERNAL RESISTANCE RATE

»8. BATTERY CAPACITY


                                                                                                                                                                            

2. BATTERY STRUCTURE

next page:battery discharge performance

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CATALOG

»1. BATTERY CHARACTERISTICS

»2. STRUCTURE

»3. DISCHARGE PERFORMANCE&CHARACTERISTICS

»4. CHARGING PERFORMANCE&CHARACTERISTICS

»5. SERVICE LIFE

»6.STORAGE CONDITION

»7. INTERNAL RESISTANCE RATE

»8. BATTERY CAPACITY

                                                                                                                                                                            

3. BATTERY DISCHARGE PERFORMANCE

3.1 the voltage level when the battery is fully discharged

to ensure battery security and best service life ,we must set a termination voltage, which is highly related to the battery nominal discharge current. when the battery is under larger discharge current, its termination voltage could be lower.when its discharging current is smaller,its termination voltage shall be higher. chart two lists our recommended battery-discharging termination voltage under different electricity rates.

chart 2

discharging current

  discharging termination voltage (V)PC)

   less than 0.1CA

                             1.75

    0.11-0.17CA

                             1.70

    0.18-0.25CA

                             1.67

      0.26-1CA

                             1.60

    more than 1.1CA

                             1.30

 

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CATALOG

»1. BATTERY CHARACTERISTICS

»2. STRUCTURE

»3. DISCHARGE PERFORMANCE&CHARACTERISTICS

»4. CHARGING PERFORMANCE&CHARACTERISTICS

»5. SERVICE LIFE

»6.STORAGE CONDITION

»7. INTERNAL RESISTANCE RATE

»8. BATTERY CAPACITY

                                                                                                                                                                            

3.2 DISCHARGING CAPACITY

battery discharging capacity  is mainly determined by discharging current and environmental tempreture.

the relation between battery discharging capacity and discharging current,picture1,2,3图1、2、3) for TW  series battery,we can see the battery's different discharging capacities under varied discharging rates.a conclusion could be drawn from the chart,that under a larger discharging rate,the battery's discharging capacity would be lowered.

3.3 THE CONNECTION BETWEEN BATTERY CAPACITY AND ENVIRONMENT TEMPRETURE

when the discharging current is set,the battery's discharging capacity would be larger under higher tempreture.vice versa.the battery's discharging capacity would be smaller under lower tempreture.chart 4 displayed the connection betweeb battery discharging capacity and tempreture.

.

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CATALOG

»1. BATTERY CHARACTERISTICS

»2. STRUCTURE

»3. DISCHARGE PERFORMANCE&CHARACTERISTICS

»4. CHARGING PERFORMANCE&CHARACTERISTICS

»5. SERVICE LIFE

»6.STORAGE CONDITION

»7. INTERNAL RESISTANCE RATE

»8. BATTERY CAPACITY

                                                                                                                                                                            

4. BATTERY CHARGING PERFORMANCE

4,1 CHARGING METHOD

It is important for the battery. Improper charging methods can overcharge or undercharge the battery, affecting the performance and life of the battery. There are two commonly used charging methods:

A、Constant voltage current limiting charge  B、Constant current charging

4.2 CONSTANT VOLTAGE CURRENT LIMITING CHARGE

For valve-regulated lead-acid batteries, this charging method is the best method of charging. The controlled charging voltage is related to the ambient temperature and how the battery is used.

Backup battery charge: 2.23 ~ 2.30/cell, at 25°C,

Cycle charging with battery: 2.40~2.50/cell, at 25°C.

Note: The maximum starting charging current is generally set to not more than 0.3CA.

(Figure 5, 6) is a battery charging curve. It can be seen from the figure that when the charging voltage of the battery is 2.30V/cell at 25°C, the charging current drops to 0.5~4mA/AH when the battery is fully charged. constant. When the battery is charged to 2.40V/cell, when the battery is fully charged, the charging current drops to 3~10MA/AH and remains unchanged.


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CATALOG

»1. BATTERY CHARACTERISTICS

»2. STRUCTURE

»3. DISCHARGE PERFORMANCE&CHARACTERISTICS

»4. CHARGING PERFORMANCE&CHARACTERISTICS

»5. SERVICE LIFE

»6.STORAGE CONDITION

»7. INTERNAL RESISTANCE RATE

»8. BATTERY CAPACITY

                                                                                                                                                                            

4.3 CONSTANT CURRENT CHARGING

When using this method to charge the battery, be careful to cut off the charging power immediately when the battery is fully charged, otherwise it will cause the battery to overcharge, and damage the battery performance and life. When using constant current charging, the charging current is generally not more than 0.1CA, when the charging power When it reaches 1.07 to 1.15 times the previous battery discharge, the battery is fully charged.

The effect of temperature on the battery charging voltage: As the chemical reaction accelerates with increasing temperature, it decreases with decreasing temperature.

In order to prevent overcharging or undercharging of the battery, when the ambient temperature of the battery is not in the range of 15°C to 35°C, the battery charging voltage needs to be adjusted. The adjustment method is as follows: Based on 25°C, the voltage adjustment factor is:

±3MV/°C Single Cell (Backup Battery)

±4MV/°C Single Cell (Circulating Battery)

For example: A UPS uses 8 12V65AH as backup battery

The battery room temperature is 40°C in summer. The charging voltage should be reduced from 8×6×2.30=110.40 to:

When the battery room temperature drops to 10°C in winter, the charging voltage should be increased from 110.40V to:

(Figure 7) is a plot of battery charge voltage versus temperature.


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CATALOG

»1. BATTERY CHARACTERISTICS

»2. STRUCTURE

»3. DISCHARGE PERFORMANCE&CHARACTERISTICS

»4. CHARGING PERFORMANCE&CHARACTERISTICS

»5. SERVICE LIFE

»6.STORAGE CONDITION

»7. INTERNAL RESISTANCE RATE

»8. BATTERY CAPACITY

                                                                                                                                                                            

4.4 CHARGING TIME

For standby batteries, when the battery is powered, the time required to fully recharge the battery is generally no less than 24 hours. For a cycle battery, if you know the previous discharge amount and the initial charge current, you can calculate the charge time required when the ambient temperature is 25°C as follows.

A. When the discharge current is greater than 0.25CA:

B. When the discharge current is less than 0.25CA:

Note: Tch = Charging time (hours) when the battery is fully charged

       Cdis = Battery's last discharge (Ah)

         I = maximum initial charge current (amps)


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CATALOG

»1. BATTERY CHARACTERISTICS

»2. STRUCTURE

»3. DISCHARGE PERFORMANCE&CHARACTERISTICS

»4. CHARGING PERFORMANCE&CHARACTERISTICS

»5. SERVICE LIFE

»6.STORAGE CONDITION

»7. INTERNAL RESISTANCE RATE

»8. BATTERY CAPACITY

                                                                                                                                                                            

5.BATTERY LIFE

The service life of a battery is directly related to the following factors:

· How to use the battery (cycle or float standby)

· The ambient temperature of the battery

· The depth of discharge of the battery

5.1 CYCLE LIFE

When the battery is recycled, the discharge and charge are one cycle, and the cycle life (cycle number) of the battery is directly related to the depth of discharge of the battery.

(Figure 8) is the relationship between cycle life and depth of discharge for a standard series TW model battery.


5.2 FLOAT CHARGE LIFE

The float float life of the battery is directly related to the ambient temperature. With a temperature of 20°C and a battery operating temperature of 8 to 10°C, the battery float life will decrease by 50%.(Figures 9, 10, and 11) are the graphs of the relationship between the float service life and the ambient temperature of the standard series FP, LFP, and CFP models.


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CATALOG

»1. BATTERY CHARACTERISTICS

»2. STRUCTURE

»3. DISCHARGE PERFORMANCE&CHARACTERISTICS

»4. CHARGING PERFORMANCE&CHARACTERISTICS

»5. SERVICE LIFE

»6.STORAGE CONDITION

»7. INTERNAL RESISTANCE RATE

»8. BATTERY CAPACITY

                                                                                                                                                                            

6. BATTERY STORAGE

The battery should be stored in a dry and clean room at low temperature (-15-40°C), avoid direct sunlight. When the battery is placed, it loses capacity due to self-discharge. Its first discharge capacity will be lower than the rated capacity. Generally, it can reach its rated capacity after 2-3 charge-discharge cycles. When the battery is not used for a long period of time, it is necessary to periodically supplement the battery, and the supplementary power cycle is shown in (Table 2)

Table 2

storage temperature

Supplementary electricity cycle


Below 20 oC(68oF):

12 months

20 to 30oC(68 to 86oF):

6 months

30 to 40oC(86 to 104oF):

3 months

The self-discharge of the battery means that when the battery is placed in an open circuit, the capacity is lost due to the internal electrochemical reaction, and the self-discharge rate is greatly related to the ambient temperature of the battery. (Figure 12) is a plot of battery storage time versus temperature.

Relationship between open-circuit voltage of the battery and remaining capacity: The remaining capacity can also be determined by measuring the open-circuit voltage of the battery. (Fig. 13) is a graph showing the relationship between the remaining capacity of the battery and the open-circuit voltage.


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CATALOG

»1. BATTERY CHARACTERISTICS

»2. STRUCTURE

»3. DISCHARGE PERFORMANCE&CHARACTERISTICS

»4. CHARGING PERFORMANCE&CHARACTERISTICS

»5. SERVICE LIFE

»6.STORAGE CONDITION

»7. INTERNAL RESISTANCE RATE

»8. BATTERY CAPACITY

                                                                                                                                                                            

7.BATTERY RESISTANCE

When the battery is fully charged, the internal resistance of the battery is minimal, and the internal resistance of the battery will gradually increase during the discharge process.

Figure 14 shows the variation of the internal resistance of the 12V7.2AH battery at different discharge rates.

(Figure 12) is a plot of battery storage time versus temperature.


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