CN206022519U - A kind of composite dual-electrode plates of lead-acid accumulator - Google Patents

Abstract

The utility model discloses a kind of composite dual-electrode plates of lead-acid accumulator, including conductive layer, negative plate and positive plate, the two sides of the conductive layer is bonding with the negative plate and the positive plate respectively, it is characterized in that, the positive plate is irregular shape, the positive plate includes that surface layer and basic unit, the surface layer are coated on the outside of the basic unit.This utility model effectively suppresses or reduces positive pole to charge the oxygen evolution reaction in later stage, and the Lead oxide brown crystallization that does not react completely after preventing from discharging comes off, solve the problems, such as anode easily fail, battery life not long.

Description

A kind of composite dual-electrode plates of lead-acid accumulator

Technical field

This utility model is related to battery pole plates, more particularly to a kind of composite dual-electrode plates of lead-acid accumulator.

Background technology

Due to fuel-engined vehicle development caused by energy crisis and environmental problem, Development of EV has become now The focus of countries in the world.However, one of difficult point of Development of Electric Vehicles is exactly power issue, hybrid-power electric vehicle is under steam Battery is often in constantly charging, discharge cycles state, and this is accomplished by developing, and a kind of specific energy is high, specific power is high, voltage is steady Fixed, low price, life-span length, good, the quick charged battery of safety.

Lead-acid accumulator because cost performance is high, power characteristic is good, self discharge is little, high temperature performance is superior, safe and reliable to operation, The features such as aboundresources, one of main use electrical source of power of hybrid electric vehicle will be become, but lead-acid accumulator is present multiple After charge and discharge point, battery just fails, and the main cause of timeliness is multiple to be born in positive pole, and on the one hand failure cause is that grid corrosion is mainly Anode plate grid corrodes, if producing oxygen causes grid corrosion, another aspect positive electrode surface product and absorption in charging process Power scarce capacity, another aspect positive electrode surface product and absorption affinity scarce capacity, the Lead oxide brown not reacted completely after discharge Crystallization comes off and causes battery failure..

Content of the invention

The purpose of this utility model is to provide a kind of composite dual-electrode plates of lead-acid accumulator, effectively suppresses or reduces positive pole Charge the later stage oxygen evolution reaction, and prevent discharge after do not react completely Lead oxide brown crystallization come off, solve anode easy The problem that failure, battery life are not grown.

For achieving the above object, this utility model provide a kind of composite dual-electrode plates of lead-acid accumulator, including conductive layer, Negative plate and positive plate, the two sides of the conductive layer are bonding with the negative plate, the positive plate respectively, it is characterised in that institute Positive plate is stated for zigzag, the positive plate includes that surface layer and basic unit, the surface layer are coated on the outside of the basic unit.

Preferably, in above-mentioned technical proposal, the material of the surface layer is applied for sub- titanium oxide.

Preferably, in above-mentioned technical proposal, the packing material of the basic unit is conductive plasticss and sub- titania mixture.

Preferably, in above-mentioned technical proposal, the implant of the conductive layer is conductive plasticss.

Preferably, in above-mentioned technical proposal, the material of the negative plate is the mixture of activated carbon and graphite.

Compared with prior art, this utility model has the advantages that：

1., in this utility model, positive plate adopts composite, surface layer to be preferentially prevented effectively from storage from sub- titanium oxide The problem that battery is failed using middle and late stage active substance.

2. as the sub- titanium oxide positive pole of absorption Lead oxide brown, because which has good corrosion resistance, it is to avoid because of plate Battery malfunction problem caused by gate etching.

3. the structure of positive plate is irregular shape, increased positive electrode surface product and absorption affinity, after effectively preventing from discharging not The Lead oxide brown crystallization that reacts completely comes off, and finally slow down the decay of capacity, so as to the battery life for extending.

Description of the drawings

Structural representations of the Fig. 1 for the composite dual-electrode plates of this utility model lead-acid accumulator.

Drawings in side sectional elevation of the Fig. 2 for the composite dual-electrode plates of this utility model lead-acid accumulator.

Main Reference Numerals explanation：

1- conductive layers, 2- negative plates, 3- positive plates, 301- surface layers, 302- basic units.

Specific embodiment

Below in conjunction with the accompanying drawings, specific embodiment of the present utility model is described in detail, it is to be understood that this practicality New protection domain is not limited by specific embodiment.

As depicted in figs. 1 and 2, according to a kind of composite bipolar of lead-acid accumulator of this utility model preferred implementation Plate, including conductive layer 1, negative plate 2 and positive plate 3.

As shown in figure 1, the two sides of conductive layer 1 is bonding with negative plate 2 and positive plate 3 respectively, wherein, positive plate 3 is bonded in Above conductive layer 1, negative plate 2 is bonded in below conductive layer 1.

Referring in detail to Fig. 1, positive plate 3 is irregular shape, and the preferred zigzag of the present embodiment can also be concave-convex or honeycomb Shape；Zigzag positive plate is bigger than the positive plate of plane with electrolyte contacts face, so as to increased area and the suction of anelectrode table Attached power, the Lead oxide brown crystallization that does not react completely after effectively prevent electric discharge come off, and promote that positive plate separates out have oxygen with The hydrogen that negative pole is separated out carries out recombination, reaches suppression hydrogen and goes out the purpose of oxygen, finally slow down the decay of capacity, so as to extended Battery life；

Referring in detail to Fig. 2, positive plate 3 includes that surface layer 301 and basic unit 302, surface layer 301 are coated on the outer of basic unit 302 Side, wherein, in order to prevent positive pole（The perishable conductive accumulator of traditional lead acid batteries anode plate grid gradually fails）In charge and discharge battery During etching problem, the material of surface layer 301 preferably Asia titanium oxide, and even application, on the outside of basic unit 302, thickness exists In the range of 0.1 ~ 1mm, preferably 0.5mm, and the packing material of basic unit 302 is conductive plasticss and sub- titania mixture.

In the present embodiment, the preferred conductive plasticss of the implant of conductive layer 1, the preferred activated carbon of the material of negative plate 2 and stone There is high surface characteristic, surface area to be about 1000 ~ 2000/g for the mixture of ink, activated carbon.On negative pole/Pb electricity to Response speed is very fast, and without obvious overpotential, so the deposition of lead and dissolving can be carried out faster.

In sum, the composite dual-electrode plates of a kind of lead-acid accumulator that this utility model is pointed out, compared with common pole plate, Effectively suppress or reduce the oxygen evolution reaction in positive pole charging later stage, and the Lead oxide brown crystallization that does not react completely after preventing from discharging is de- Fall, and anode be difficult failure, battery life long.

Finally it should be noted that：Preferred embodiment of the present utility model is the foregoing is only, this is not limited to Utility model, although being described in detail to this utility model with reference to the foregoing embodiments, for those skilled in the art For, which still can be modified to the technical scheme described in foregoing embodiments, or to which part technical characteristic Carry out equivalent.All of the present utility model spirit and principle within, any modification, equivalent substitution and improvements that is made etc., Should be included within protection domain of the present utility model.

Claims (3)

1. a kind of composite dual-electrode plates of lead-acid accumulator, including：Conductive layer (1), negative plate (2) and positive plate (3), the conduction The two sides of layer (1) is bonding with the negative plate (2), the positive plate (3) respectively, it is characterised in that described positive plate (3) are saw Profile of tooth, the positive plate (3) include surface layer (301) and basic unit (302), and surface layer (301) are coated on the basic unit (302) Outside.

2. composite dual-electrode plates of lead-acid accumulator according to claim 1, it is characterised in that surface layer (301) Material is applied for sub- titanium oxide.

3. composite dual-electrode plates of lead-acid accumulator according to claim 1, it is characterised in that conductive layer (1) is filled out Thing is filled for conductive plasticss.