CN2590188Y

CN2590188Y - Electrokinetic cell

Info

Publication number: CN2590188Y
Application number: CN02254100U
Authority: CN
Inventors: 王俊明; 陈建; 左仕学
Original assignee: Zhejiang Narada Power Source Co Ltd
Current assignee: Zhejiang Narada Power Source Co Ltd
Priority date: 2002-09-18
Filing date: 2002-09-18
Publication date: 2003-12-03
Anticipated expiration: 2012-09-18

Abstract

The utility model relates to a power cell, which is not easy to generate self-discharge and has good earthquake resistance performance, high specific energy and long service life. The utility model comprises a cell jar 11 and a cell cover 8, and the cell jar 11 is provided with a positive plate 3, a negative plate 7 and spacer plate 6. A wax layer 10 is filled between the simple lattices of the cell, and a wax layer 9 is filled between a cell pole group and the cell cover 8. The cell jar 11 is mostly provided with a bipolar plate comprising a positive plate part 5 and a negative plate part 4. The bipolar plate is provided with a lead cloth slab lattice, the right half part of which is coated with positive electrode lead plaster to form the positive plate part 5, and the left half part is coated with negative electrode lead plaster to form the negative plate part 4. The lead cloth slab lattice is formed by knitting glass fibre composite lead wires, and the inner core of the glass fibre composite lead wire is provided with glass fiber filaments 12, the periphery of which is coated with a Pb-Sn alloy coating layer 13. The utility model is suitable for being used as the power cell of motor vehicles, etc.

Description

A kind of electrokinetic cell

Technical field

The utility model belongs to a kind of lead acid accumulator, the lead acid accumulator in the source that particularly is used as power.

Background technology

What the common electrokinetic cell overwhelming majority adopted all is the pasting plate battery, and it comprises positive plate plate, negative plate, dividing plate, pole, battery case and battery cover etc.

Common power with valve-control sealed battery owing to adopt dull and stereotyped pole plate, and dull and stereotyped pole plate adopts gravity casting, for fine shaping, grid can not be done very thinly, and general weight is bigger, and grainiess is poor, easily corrosion, thereby cause defectives such as the battery specific energy is low, cycle life is short, heavy-current discharge performance is relatively poor, be difficult to satisfy the present user instructions for use growing electrokinetic cell; Besides, blow-by between the existing battery cell, there is the space, cause climbing between cell negative terminal acid or short circuit easily and make the battery premature failure, and the battery anti-seismic performance is bad, easily utmost point group's slippage or dislocation taking place when using and makes battery failure under long-term vibration or some adverse circumstances, and the easy leakage of battery, these have all greatly limited the development of electric bicycle, electric automobile and other hybrid electric vehicles.

Summary of the invention

The utility model will solve the problem that existing electrokinetic cell shock resistance is poor, specific energy is low, heavy-current discharge performance is poor, useful life is short, provides a kind of electrokinetic cell of the present utility model, to solve described problem.

For addressing the above problem, the technical solution adopted in the utility model comprises battery case and battery cover, its special character is to be filled with the wax layer between cell negative terminal, between battery electrode group and battery cover, be filled with the wax layer, flatly be provided with the bipolar pole plate that comprises positive plate part and negative plate part in the battery case.

Described bipolar pole plate has plumbous cloth grid, a plumbous cloth grid part is coated with anode diachylon and constitutes described positive plate part, plumbous cloth grid another part is coated with cathode lead plaster and constitutes described negative plate part, the alternate distance with the negative plate part of positive plate part on plumbous cloth grid.

Described plumbous cloth grid should adopt the compound spongy lead braiding of glass fibre to form, and its inner core of the compound spongy lead of described glass fibre has glass fiber, at the peripheral plating of glass fiber the Pb-Sn alloy cladding layer is arranged.

Have good adhesion for making between the described plumbous fabric swatch aperture plate lattice node, prevent plumbous cloth distortion and extension, have a Pb-Sn alloy-layer can satisfy this requirement in this plumbous cloth grid surface-coated.

The compound spongy lead of described glass fibre is to push the plating layer of lead-tin alloy outside glass fiber strand, be drawn into diameter again and be the spongy lead about 0.4mm, it has higher intensity and corrosion resistance and good electrical conductivity, and in light weight, can greatly improve the useful life and the rapid charge characteristic of specific energy, specific power and the battery of battery as the grid material of battery with it.

The utility model is owing to be filled with the wax layer between the cell negative terminal and between battery case and the battery cover, so the battery anti-seismic performance is good, and battery is not prone to leakage, single compartment is difficult for producing climbs acid or short circuit, be not prone to self discharge, the corrosion resistance of parts such as battery bus-bar also is improved, and battery is prolonged useful life; Because the utility model adopts the horizontal double pole pole plate, single compartment electron conduction approach shortens again, so the internal resistance of cell reduces, the high-rate battery discharge performance is improved; Adopt the utility model of plumbous cloth grid, the weight of battery pole plates, volume reduce, and battery specific energy, specific power are improved.Electrokinetic cell of the present utility model, after testing, its combination property is improved largely than common electrokinetic cell, and only specific energy is just brought up to 40Wh/kg (2 hour rate) by the 32Wh/kg (2 hour rate) of common batteries, improves more than 25%.

Description of drawings

Fig. 1 is a kind of electrokinetic cell structural representation of the present utility model;

Fig. 2 is Fig. 1 battery A-A sectional structure schematic diagram;

Fig. 3 is plumbous cloth grid structural representation;

Fig. 4 is that the plumbous cloth grid of Fig. 3 is handed over volume place form schematic diagram;

Fig. 5 is a bipolar pole plate floor map in the utility model;

Fig. 6 is the compound spongy lead structural representation of glass fibre of making plumbous cloth grid.

Embodiment

A kind of electrokinetic cell of present embodiment, comprise battery case 11, battery cover 8, safety valve 2, the positive and negative pole 1 of drawing, be provided with positive plate 3, negative plate 7 and dividing plate 6 in the battery case, between cell negative terminal, be filled with wax layer 10, between battery electrode group and battery cover 8, be filled with wax layer 9, flatly be provided with the bipolar pole plate that comprises positive plate part 5 and negative plate part 4 in the battery case 11.Described bipolar pole plate has plumbous cloth grid, plumbous cloth grid right half part is coated with anode diachylon and constitutes positive plate part 5, plumbous cloth grid left-half is coated with cathode lead plaster and constitutes negative plate 4 parts (Fig. 3, Fig. 5), positive plate part 5 and negative plate part 4 alternate distances on plumbous cloth grid.Described plumbous cloth grid is to be formed by the compound spongy lead braiding of glass fibre, and its inner core of the compound spongy lead of described glass fibre has glass fiber 12, at glass fiber 12 peripheral plating Pb-Sn alloy cladding layer 13 is arranged.

Claims

1, a kind of electrokinetic cell, comprise battery case (11) and battery cover (8), it is characterized in that between cell negative terminal, being filled with wax layer (10), between battery electrode group and battery cover (8), be filled with wax layer (9), flatly be provided with the bipolar pole plate that comprises positive plate part (5) and negative plate part (4) in the battery case (11).

2, a kind of electrokinetic cell as claimed in claim 1, it is characterized in that described bipolar pole plate has plumbous cloth grid, a plumbous cloth grid part is coated with anode diachylon and constitutes described positive plate part (5), plumbous cloth grid another part is coated with cathode lead plaster and constitutes described negative plate (4) part, positive plate part (5) and negative plate part (4) alternate distance on plumbous cloth grid.

3, a kind of electrokinetic cell as claimed in claim 2, it is characterized in that described plumbous cloth grid is to be formed by the compound spongy lead braiding of glass fibre, its inner core of the compound spongy lead of described glass fibre has glass fiber (12), at the peripheral plating of glass fiber (12) Pb-Sn alloy cladding layer (13) is arranged.

4,, it is characterized in that one Pb-Sn alloy-layer being arranged in described plumbous cloth grid surface-coated as claim 2 or 3 described a kind of electrokinetic cells.