CN2574227Y

CN2574227Y - Internal voltage balancing device for valve controlled sealed lead-acid accumulator battery

Info

Publication number: CN2574227Y
Application number: CN 02254116
Authority: CN
Inventors: 俞美雯; 高强; 陈建; 包有富
Original assignee: Zhejiang Narada Power Source Co Ltd
Current assignee: Zhejiang Narada Power Source Co Ltd
Priority date: 2002-09-09
Filing date: 2002-09-09
Publication date: 2003-09-17
Anticipated expiration: 2012-09-09

Abstract

The utility model relates to an internal voltage balancing device for a valve controlled sealed lead-acid accumulator battery, which can maintain the uniformity of the internal voltage of every accumulator in the accumulator battery. An acid injecting cover mouth (1) of every accumulator of the accumulator battery is covered with a flow collecting dish (2) connected with a vertical pipe segment (3) penetrating a cupped flow collecting cavity (21) below the flow collecting dish (2). The upper end of the vertical pipe segment (3) is connected with transverse pipe segments (4) with an end through opening. Connecting pipes are connected in series between every transverse pipe segment, and an outlet end of the tail end connecting pipe (5) is connected with a pressure regulator (6). The pressure regulator (6) is provided with a valve body (61), a valve cavity (62) of which is provided with a valve seat (65). The valve seat (65) is provided with a floating valve (63), and the upper part of the valve body (61) is provided with an exhaust outlet (64). The utility model is assembled in the valve controlled sealed lead-acid accumulator battery and is used as the internal voltage balancing device of the accumulator.

Description

Valve-control sealed lead acid battery group internal voltage balancing device

Technical field

The utility model relates to pressing in valve-control sealed lead acid battery the group external device, particularly batteries regulates balancer.

Background technology

Fixed valve controlled sealed lead-acid accumulator group is generally moved under floating charge state with series system, carries out floating charge by rectifier under non-power down mode, makes every battery in the batteries all be in electric sufficient state, uses during in order to power failure.In series circuit, electric current by each battery is identical, but because the efficient difference of each battery storage energy, the speed of the battery storage energy that efficient is high is fast, voltage rises very fast, and the speed of inefficient battery storage energy is slow, and it is slower that voltage rises, thus in the floating charge process float charge voltage generation deviation of each battery.The inhomogeneity quality of storage battery float charge voltage directly has influence on the useful life of VRLA batteries.If the float charge voltage of a certain battery is low excessively, then may undercharge and lost efficacy, work the mischief for communication or other facilities; If the float charge voltage of a certain battery is too high, battery corrosion is accelerated, dehydration is serious, quickens the termination in its life-span.Therefore, various countries have proposed strict requirement to the float charge voltage uniformity of VRLA batteries; British Standard (BS) and Deutsche industry norm (DIN) (DIN) have all been stipulated the inhomogeneity limit of fixed lead acid battery float charge voltage, if the terminal voltage of a certain battery surpasses the limit of regulation, allow to carry out bulk charge one time by standard code, if still can not recover normal voltage after all filling, then this storage battery is judged to early failure.China's communications industry is more stricter than above-mentioned standard to the uniformity requirement of float charge voltage, standard code is that the float charge voltage deviation is less than 90mV, certain customers require less than 50mV, yet the float charge voltage deviation of many producers battery is about 100mV, some deviation has surpassed more than the 200mV, floating charge homogeneity problem is a main difficult problem of present domestic and international valve-control sealed storage battery, becomes the main reason that influences battery performance.Cause that the uneven factor of float charge voltage mainly contains the cell active materials amount, the uniformity that assembling pressure and safety valve open and close valve are pressed, wherein the uniformity of being quality and assembling pressure is owing to limited by equipment and production efficiency, best level also can only be controlled at about 5%, and the open and close valve of safety valve pressure depends on the uniformity of safety valve and the uniformity of battery valve opening working of plastics size, actual safety valve production process is that a mould has more (maximum moulds 180 that reach go out), pressure when also being subjected to injection moulding, Temperature Influence, its uniformity preferably also can only be controlled at about 15%, add the influence of the working of plastics dimensional tolerance that safety valve is installed, thereby the deviation that the battery open and close valve is pressed can reach about 35%.If control the uniformity that the battery open and close valve is pressed by the mode of one by one inspection, not only waste is big, and efficient is low.

Summary of the invention

The utility model will solve each inner pressure of battery inhomogeneities of valve-control sealed lead acid battery group and cause the uneven problem of float charge voltage, provides to make the uniform a kind of valve-control sealed lead acid battery group internal voltage balancing device of each inner pressure of battery.

For addressing the above problem, its special character of the technical solution adopted in the utility model is to be covered with an afflux dish to be linked with a vertical segment on it and to run through below the afflux dish on the notes of every battery of described batteries acid lid mouthful, the vertical segment upper end is associated with the horizontal segment of end port, be provided with tube connector between each horizontal segment and lead to mutually, the connecting tube of end port of export is connected with pressure regulator;

Described pressure regulator is provided with in its valve pocket of valve body has valve seat, and valve seat is provided with a unsteady valve, and valve body top is provided with exhaust outlet.

Can connect in manifold and the described vertical segment that described afflux dish is provided with indent below it.

Tube connector between described each horizontal segment can be the plastics pipe, and suitable series system connects between each horizontal segment.

The utility model is associated with a vertical segment owing to be provided with the afflux dish on the notes of each battery acid lid mouthful on it, the vertical segment upper end is associated with the horizontal segment of end port, be connected with tube connector between each horizontal segment, connecting tube of end is connected with pressure regulator, gas (comprising hydrogen and oxygen) that each inside battery produces and acid mist can be annotated sour Gai Kou and the lid mouthful upward discharge of the slit between the set burst disk by battery, in the horizontal segment of afflux in the utility model and the tube connector therebetween, make each cell internal pressure gas be tending towards breakthrough status, by pressure regulator pressure is controlled at set point again, each inner pressure of battery keeps uniformity in the battery pack so the utility model can make; Pressure regulator is provided with a unsteady valve, and when system pressure surpassed set point, unsteady valve was opened automatically, discharged gas, and when system pressure dropped to lower limit, unsteady valve was closed automatically.Because each inner pressure of battery is consistent in the battery pack, so can make float charge voltage be tending towards even.Because the setting of vertical segment, horizontal segment and tube connector is arranged, the utility model has also enlarged the space that cell gas exists, make gas pressure reduce, reduced the release of gas, delay water loss, simultaneously because the existence of extraneous gas pipeline, when battery overcharge, created the space of inside and outside heat exchange, (internal temperature of battery can be up to 40 ℃ when overcharging so can to reduce internal temperature of battery, and the outside batteries temperature is usually constant in 25 ℃), and can reduce the aqueous vapor evaporation, thereby prolong battery useful life.The utility model has also been controlled the acid mist that gas is followed when control gaseous discharges, connect a pipe to lead to battery of living in outdoor in the pressure-regulating valve gas outlet, makes to avoid the influence of battery acid mist fully with the exist together electric equipment etc. of a Room of battery; If acid mist is received in the absorption bottle through pipe, can avoid the pollution of acid mist again to environment.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is that the relative cell gas of the utility model discharges and afflux process partial schematic diagram;

Fig. 3 is afflux dish in the utility model, vertical segment and horizontal segment schematic top plan view.

Embodiment

Valve-control sealed lead acid battery group internal voltage balancing device, be provided with an afflux dish 2, this afflux dish is covered on the notes acid lid mouth 1 of every battery of battery pack, afflux dish 2 is provided with the manifold 21 of indent below it, be linked with a vertical segment 3 on the afflux dish 2 and run through manifold 21, vertical segment 3 upper ends are associated with the horizontal segment 4 of end port, are provided with tube connector 5 between each horizontal segment and lead to mutually, and connecting tube of end 5 ports of export are connected with pressure regulator 6; Pressure regulator 6 is provided with in valve body 61 its valve pockets 62 has valve seat 65, and valve seat 65 is provided with a unsteady valve 63, and valve body 61 tops are provided with exhaust outlet 64.

During the utility model uses, the slit that gas (comprising hydrogen and oxygen) that inside battery produces and acid mist 7 are annotated acid lid mouth 1 and burst disk 8 by battery enters manifold 21, vertical segment 3, horizontal segment 4 and tube connector 5, makes pressure be limited to set point under pressure regulator 6 controls; When system pressure surpasses set point, the unsteady valve 63 in the pressure regulator is opened automatically and is discharged gases, and when system pressure dropped to lower limit, unsteady valve was closed automatically.

Claims

1, valve-control sealed lead acid battery group internal voltage balancing device, it is characterized in that being covered with on the notes acid lid mouthful (1) of every battery of described batteries an afflux dish (2) is linked with a vertical segment (3) on it and runs through below the afflux dish (2), vertical segment (3) upper end is associated with the horizontal segment (4) of end port, be provided with tube connector (5) between each horizontal segment and lead to mutually, connecting tube of end (5) port of export is connected with pressure regulator (6);

Described pressure regulator (6) is provided with has valve seat (65) in its valve pocket of valve body (61) (62), valve seat (65) is provided with a unsteady valve (63), and valve body (61) top is provided with exhaust outlet (64).

2, internal voltage balancing device as claimed in claim 1 is characterized in that the manifold (21) that described afflux dish (2) is provided with indent below it connects with vertical segment (3).