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Valve-controlled battery in the main working part of the DC screen

Return Listsource:Gratene date: 2022-06-17

Valve-controlled battery in the main working part of the DC screen1. The valve-controlled battery pack is normal to operate in a floating charge, and the floating voltage value should be controlled as (2.23 to 2.28) V × N, which is generally controlled at 2.25 V × N (25 ° C); equalization charging voltage should be controlled (2.30 ~ 2.35) v × n. ) l0 b6 `) K) z + p; y
2, in Article 1 N is the number of batteries, this station takes N = 104, that is, the floating voltage value should be controlled to (231.92 to 237.12) V, generally should be controlled at 234V (25 ° C); equalization charging voltage should be controlled For (239.2 to 244.4) V. $ W% \) y! ~ 8 \ 0 m: E- Z & q * \% C
3. The valve-controlled battery pack in the operation mainly monitors the end voltage value of the battery pack, the voltage value of each monomer battery, the operating ambient temperature, the battery pack, and the DC bus-ground resistance value, etc. . , Y4 D /} (O & I ‘~ 0 T (K
4, the valve-controlled battery in the operation voltage variation value and the discharge termination voltage value should meet the following provisions (this station battery nominal voltage is 2V): The voltage deviation value in the operation ± 0.05V, the opening voltage maximum minimum voltage difference: 0.03 V, discharge termination voltage value of 1.80V. * Z: {; Y-J2 T2 E ‘`(x
5. In the inspection, the monomer voltage value of the battery should be checked, the connecting piece has loose and corrosion phenomenon, and the housing has no leakage and deformed, and whether there is acid mist spill around the pole column and the safety valve, whether the insulation resistance decreases, the battery Whether the ventilation is well dissipating, whether the temperature is too high. (j! R3 V3 R + K
6. According to the actual situation of the site, the crust-controlled battery pack should be cleaned regularly. 3 x9] ‘p: c’ E2 N # y
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Valve-controlled battery pack charge and discharge 4 J8 Q (U & D0 | /} 3 D
1. Constant current limit charging
The constant current charging is performed using I10 current, and when the battery pack voltage rises to (2.3 ~ 2.35) V × N limit voltage value, automatic or manual turn to constant voltage charging. 6 \ 2 P & S9 P4 E & J ‘^ * K
2. Constant voltage charging
Under the constant voltage charging of (2.3 ~ 2.35) V × N, the charging current gradually decreases. When the charging current is reduced to 0.1 I10 current, the countdown of the charging device starts starting. When the setup countdown ends, the charging device will automatically or Manual turn into normal floating charge operation. The floating charge voltage value is preferably controlled (2.23 ~ 2.28) v × n. (F # c7 x; vg2]! N9 o-f / o
3. Supplement charging
In order to make up for the incarnation due to improper adjustment due to floating charge, supplemental charging can be made as needed, so that the battery pack is full capacity. The procedure is: constant current limit charging – constant voltage charging – floating charge. Supplementary charging should be reasonably grasp, which is determined when necessary, prevent frequent rechargeable battery quality and life. $ B6 O2 C8 U3 W5 I- Y5_) S
4. Checlatable discharge 4] + O- H0 Z &} ‘E% Z
Long-term floating electricity operation mode or only in line with a limit of wireless flow, unable to determine the existing capacity of the battery, whether or not the inside is lost or dry. By checking, battery capacity defects can be found. : T; D2 U0 o ‘g
(1) Questability discharge of two sets of valve-controlled battery packs
When there is two sets of batteries in the whole station, a set of runs, another set of exits running full-core relay. Discharge I10 constant current, when the battery pack voltage drops to 1.8V × N, stop discharge. After (1 ~ 2) h, constant current limit charging – constant voltage charging – floating charge is used again with I10 current. Repeated (2 ~ 3) times, the battery capacity can be recovered. If the battery pack has a total of 80 ℅ or more, the battery pack is less than 80 ℅ or more, and the replacement should be arranged.
(2) Checlativity discharge cycle of valve control battery pack
The newly installed valve-controlled battery should check the check-in charge and discharge at the time of acceptance. After each 2 to 3 years, a check-in charge and discharge is taken, and the valve-controlled battery after six years is taken, which is appropriate for each annual check-in charge and discharge. ) E2 V (k ‘w6 lk & S5 @ (~ 6 q / x
(3) The counter-storage battery of the standby shelves is completed every 3 months.
5, the floating charge voltage value of the valve control battery should be corrected with the ambient temperature, the reference temperature is 25 ° C, the correction value is ± 1 ° C 3mV, that is, the temperature is 1 ° C per liter, the monomer voltage is 2V Controlling battery floating charge voltage value should be reduced by 3mV, and vice versa should be increased by 3mV; the operating temperature of the valve-controlled battery should be maintained at 5 to 30 ° C, and the maximum should not exceed 35 ° C. 

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