CN2457746Y

CN2457746Y - Square metal shell sealed acoumulator

Info

Publication number: CN2457746Y
Application number: CN00265379U
Authority: CN
Inventors: 马云洲; 蔡静娴; 张俊英; 贾伟; 于泓; 李润和; 阎德意
Original assignee: HEPING HAIWAN POWER SOURCE GROUP CORP Ltd TIANJIN
Current assignee: HEPING HAIWAN POWER SOURCE GROUP CORP Ltd TIANJIN
Priority date: 2000-12-13
Filing date: 2000-12-13
Publication date: 2001-10-31
Anticipated expiration: 2010-12-13

Abstract

The utility model relates to a sealed alkaline storage battery which is composed of a casing, an electrode, electrolyte, a diaphragm, an electrode and a safety valve, wherein the conical electrode is matched, insulated and sealed with a sealed insulating piece; the junction of the bottom of the safety valve and a sealing gasket is in an acute angle contact. The utility model has the advantages of reasonable design, simple part machining, convenient operation, low cost, good sealing effect, no liquid leakage, no alkaline climb, good insulation, firm and durable structure, sensitive switching-on and safe operation. The utility model is suitable for nickel metal hydride sealed batteries, nickel-cadmium sealed batteries, nikel zinc sealed batteries and lithium ion sealed batteries.

Description

Square metal-back sealed cell

The utility model relates to enclosed alkali storage battery.

In today of industrialization high speed development, the whole mankind is paying close attention to same topic, i.e. conservation of nature environment and sustainable development.Yet the huge automobile group in the whole world is not only consuming a large amount of limited petroleum resources, and gives off the considerable harmful exhaust of quantity.Vehicle exhaust is a city primary pollution source, is directly endangering human natural environment of depending on for existence, and luxuriantly rising of electric automobile is the inevitable of automobile industry development under this background, and development is with very fast.According to statistics will be above 700,000 to global electric automobile in 2003, the output value that was used for the Ni-MH battery of electric automobile by 2010 will reach 50,000 hundred million yen.The large-capacity high-power metal nickel hydride sealing storage battery that is used for electric automobile in China is just at the early-stage, and development space is huge.Can foretell that fully the electrokinetic cell that was applicable to electric automobile in 10 years from now on will be the focus of commercial competition.The electrokinetic cell that is applicable to electric automobile mainly is a square metal-back sealed cell, and it has many advantages: (1) mechanical strength height, and impact resisting vibrating, heavy-current discharge performance is good.(2) because the battery container material is a box hat, the compressive resistance height, it is safe and reliable to have the safety valve measure again.(3) in use, no longer add electrolyte, and battery can install all aspect three of X, Y, Z, the battery no leakage, not climb alkali, cleaning easy to use is called as maintenance-free battery.(4) battery specific energy height, long service life.(5) housing heat conduction and perfect heat-dissipating help improving electrical property.

Insulated enclosure between at present commercially available square metal-back sealed cell two poles is realized with ceramic member.It is very high that this technology Available Material is noble metal, complex process, cost, and a ceramic member needs units up to a hundred, and this technology is difficult to carry out aborning.Square metal-back sealed cell is in charging latter stage and can produce certain interior pressure when overcharging, and must establish safety valve by specification requirement.Requirement to safety valve is: the 1st, and sealing, the 2nd, when inner pressure of battery reached set point, battery safety valve can in time be opened.Safety valve can be brought into play sealing function once more again after internal drop is low in addition.Safety valve seals under regular service conditions, during improper use, overcharges as the big electric current of battery, and inner pressure of battery is anxious to be increased, and safety valve will be opened when pressing above design load in reaching, otherwise just dangerous.

The purpose of this utility model provides a kind of new square metal-back sealed cell design, can overcome the deficiencies in the prior art part, adopt linear contact compression seal,, solved alkaline electro liquid and climbed along problem along negative polarizing electrode with metal-back pole insulated enclosure.The design of automatic blow off valve can be safe and reliable assurance battery operate as normal.Simple, easy to operate, with low cost, the good sealing effect of the utility model processing is convenient to promote aborning.

The utility model comprises that metal shell, electrode, electrolyte, barrier film, pole and the safety valve of storage battery constitute.

The utility model is described in detail as follows with reference to Figure of description:

Fig. 1 is a square metal-back sealed cell contour structures partial schematic diagram; Fig. 2 is that the pole insulated enclosure is by the dress schematic diagram; Fig. 3 is the safety valve structure schematic diagram.

As shown in the figure: 1 is steam vent, and 2 is locknut, and 3 is spring, and 4 is safety valve body, and 5 is gasket seal, 6 Be supporting plate, 7 is metal battery case, and 8 is positive terminal, and 9 is safety valve, and 10 is negative terminal, and 11 is tapered pole, 12 is nut, and 13 is metallic gasket, and 14 is upper sealed insulation sheet, and 15 is the lower seal insulating trip, the spy of this insulating trip Point is the special plastic of cold-resistant stream, and 16 is the flange crown cap.

Said pole comprises tapered pole 11, nut 12, metallic gasket 13, upper sealed insulation sheet 14, lower close Envelope insulating trip 15 and flange crown cap 16 consist of, and the lower seal insulating trip 15 that is positioned at flange crown cap 16 belows is enclosed within The cone end of tapered pole 11, and with tapered pole 11 couplings; Upper sealed insulation sheet 14 is enclosed within on the tapered pole 11, And between the flange crown cap 16 and metallic gasket 13 that are placed in, make tapered pole 11 and metal battery case 7 insulation, Be coated with alkaline-resisting seal grease between metallic gasket 13 and the upper sealed insulation sheet 14 and be used for stopping up capillary channel; Nut 12 is at cone Type pole 11 top fastening metal pads 13.

Said safety valve comprises steam vent 1, locknut 2, spring 3, safety valve body 4, gasket seal 5 and supporting plate 6 Consist of, safety valve body 4 is fixed on the battery container, and the bottom of safety valve body 4 and gasket seal 5 junctions are acute angles Contact is closely mated in the below that contact, gasket seal 5 are placed on supporting plate 6; Spring 3 is placed on the top of supporting plate 6, Its top contacts with locknut 2, and locknut 2 is positioned at the top of safety valve body 4, be connected with safety valve body 4 by screw thread, There is steam vent 1 centre of locknut 2.

Said square metal-back sealed cell electrode column sealing and insulation parts design, tapered pole major diameter of thread is M3mm～M60mm, and pole tapering height is 1mm～15mm, and the tapering angle is 0.5 °～20 °, and tapered diameter is φ 3mm-φ 60mm.

Said square metal-back sealed cell electrode column sealing and insulation parts material comprise plastics and elastomeric material, and the insulating sealer shape can be round or square, and circular inner diameter is of a size of φ 3mm～φ 60mm, and thickness is 1mm～15mm.Square is of a size of 4mm * 4mm～80mm * 80mm, and its interior diameter is φ 3～φ 60mm, and thickness is 1～15mm.

Said square metal-back sealed cell crown cap pole hole dimension is φ 3mm～φ 90mm, and the pole hole flanging is 0.1mm～3.5mm, and crown cap thickness is 0.2mm～1.5mm.Said square metal shell sealed cell safety valve can adopt metal material, also can adopt plastics, and safety valve body can weld with battery cover, also available screw threads for fastening.Safety valve steam vent diameter is 0.5mm～20mm, being sealed and matched to being processed into the acute angle of arbitrary shape of safety valve sealing gasket and valve body.The safety valve seal can be rubber or plastics, and its shape can be a sheet, ball-type or garden column type.The size disk of sheet is that φ 1mm～φ 20mm, thickness are 0.2mm～10mm; Side's chip size is that 1mm * 1mm～20mm * 20mm, thickness are 0.2mm～10mm; Ball-type is of a size of φ 1mm～φ 20mm; Cylinder is of a size of φ 1mm～φ 20mm.It can be that metal spring also can be an elastomeric material that safety valve starts elasticity, and the size diameter of metal spring is φ 2mm～φ 20mm, highly is 2mm～50mm, and operational forces is 0.1N～15N.

The utility model has solved the insulation and the sealing of square metal-back sealed cell preferably, comprises that alkaline electro liquid climbs along problem along negative polarizing electrode.The utility model can be safe and reliable assurance battery operate as normal, process simple, easy to operate, with low cost, good sealing effect, be convenient to aborning promote.The utility model is applicable to nickel metal hydride sealed cell, NI-G sealed cell, nickel zinc sealed cell and lithium ion sealed cell.

The concrete Application Example of the utility model is described below:

Embodiment 1:

Used for electric vehicle JQNF100 metal shell metal hydride-nickel sealed cell, the critical piece of pole insulated enclosure has the crown cap of pole hole flanging, tapered both positive and negative polarity pole, lower seal, last sealing ring, metallic gasket, locknut, seal grease.Above-mentioned parts is pressed assembling shown in the accompanying drawing 2, and seal grease is coated in around sealing ring and the lid pole hole, and locknut is tightened.

Embodiment 2:

Electric bicycle has the battery cap with the main parts size of JQNF18 metal hydride-nickel sealed cell safety valve, valve body, caulking gum pad, supporting plate, spring and trivial mother.In actual production process, earlier valve body is welded on the lid, the housing and the lid welding of utmost point group will be housed then, inject alkali lye at last.Press accompanying drawing 3 assembling safety valves, locknut is screwed to preposition.

Claims

1, a kind of square metal-back sealed cell, it comprises that housing, electrode, electrolyte, barrier film, pole and safety valve constitute, and is characterized in that:

Said pole comprises tapered pole 11, nut 12, metallic gasket 13, upward sealed insulation sheet 14, lower seal insulating trip 15 and flange crown cap 16 constitute, the lower seal insulating trip 15 that is positioned at flange crown cap 16 belows is enclosed within the awl end of tapered pole 11, and tapered pole 11 couplings; Last sealed insulation sheet 14 is enclosed within on the tapered pole 11, and between the flange crown cap 16 and metallic gasket 13 that are placed in; Nut 12 is at tapered pole 11 top fastening metal pads 13;

Said safety valve comprises that steam vent 1, locknut 2, spring 3, safety valve body 4, gasket seal 5 and supporting plate 6 constitute; Safety valve body 4 is fixed on the battery container, and the bottom of safety valve body 4 is that acute angle contacts with gasket seal 5 junctions, and contact is closely mated in the below that gasket seal 5 is placed on supporting plate 6; Spring 3 is placed on the top of supporting plate 6, and its top contacts with locknut 2, and locknut 2 is positioned at the top of safety valve body 4, is connected with safety valve body 4 by screw thread, and there is steam vent 1 centre of locknut 2.

2, according to the said square metal-back of claim 1 sealed cell, it is characterized in that being coated with alkaline-resisting seal grease between said metallic gasket 13 and the last sealed insulation sheet 14, be used to stop up capillary channel.

3, according to the said square metal-back of claim 1 sealed cell, it is characterized in that said tapered pole major diameter of thread is M3mm～M60mm, pole tapering height is 1mm～15mm, and the tapering angle is 0.5 °～20 °, and tapered diameter is φ 3mm-φ 60mm.

4, according to the said metal shell square of claim 1 sealed cell, it is characterized in that said insulated enclosure material comprises plastics or elastomeric material, the insulating sealer shape can be round or square, and circular inner diameter is of a size of φ 3mm～φ 60mm, and thickness is 1mm～15mm; Square is of a size of 4mm * 4mm～80mm * 80mm, and its interior diameter is φ 3～φ 60mm, and thickness is 1～15mm.

5, according to the said square metal-back of claim 1 sealed cell, it is characterized in that square sealed cell crown cap pole hole dimension is φ 3mm～φ 90mm, the pole hole flanging is 0.1mm～3.5mm, crown cap thickness is 0.2mm～1.5mm.

6,, it is characterized in that said safety valve steam vent diameter is 0.5mm～20mm, being sealed and matched of safety valve sealing gasket and valve body to being processed into the acute angle of arbitrary shape according to the said square metal-back of claim 1 sealed cell.

7, according to the said square metal-back of claim 1 sealed cell, it is characterized in that said safety valve seal can be rubber or plastics, its shape can be a sheet, ball-type or garden column type.

8, according to the said square metal-back of claim 7 sealed cell, the size disk that it is characterized in that said sheet is that φ 1mm～φ 20mm, thickness are 0.2mm～10mm; Side's chip size is that 1mm * 1mm～20mm * 20mm, thickness are 0.2mm～10mm; Said ball-type is of a size of φ 1 mm～φ 20mm; Said column type is of a size of φ 1mm～φ 20mm.

9, according to the said square metal-back of claim 1 sealed cell, it is characterized in that it can be that metal spring also can be an elastomeric material that said safety valve starts elasticity, the size diameter of metal spring is φ 2mm～φ 20mm, highly is 2mm～50mm, and operational forces is 0.1N～15N.

10, the said square metal-back of claim 1 sealed cell is used for nickel metal hydride square sealed cell, NI-G square sealed cell, nickel zinc sealed cell or lithium ion sealed cell.