CN207504102U

CN207504102U - A kind of positive plate for nickel-hydrogen cell

Info

Publication number: CN207504102U
Application number: CN201721716512.3U
Authority: CN
Inventors: 马才奇
Original assignee: YIYANG KELIYUAN BATTERY CO Ltd
Current assignee: YIYANG KELIYUAN BATTERY CO Ltd
Priority date: 2017-12-12
Filing date: 2017-12-12
Publication date: 2018-06-15
Anticipated expiration: 2027-12-12

Abstract

The utility model provides a kind of positive plate for nickel-hydrogen cell, the tail end-side of one plane of positive plate regards inclined surface at an angle, the bottom of the inclined surface is concordant with the breech face of positive plate, and the distance of bottom to another plane of positive plate of the inclined surface is the 27~68% of positive plate thickness；Two planes are arc-shaped with the intersection side view in front and rear sides face respectively up and down for positive plate.A kind of positive plate for nickel-hydrogen cell of the utility model, it is simple in structure, pole piece burr can be reduced pierce through diaphragm probability, improve battery core circular arc degree, reduce battery short circuit rate.

Description

A kind of positive plate for nickel-hydrogen cell

Technical field

The utility model is related to a kind of positive plate for nickel-hydrogen cell.

Background technology

The manufacture craft of Ni-MH battery is highly developed at present, but is produced using the positive plate that common technique makes Battery will appear different degrees of low pressure in use, the problems such as short circuit and battery core circularity are poor, through dissection and analysis, electricity The low pressure in pond, most of short circuit are all battery core circularities caused by piercing through diaphragm and cathode contact due to the burr on positive plate Difference be since the size before and after positive plate, negative plate is all consistent, and cannot be complete with the increase of circular arc degree in winding process Full fitting is formed.Battery capacity is higher, it is desirable that the active material filled on positive and negative anodes matrix is more, allows for being made in this way Positive plate, negative plate thickness it is thicker, battery core is non-round after winding, and the housing that high-capacity battery uses is relatively thin, be packed into After battery core, housing is easily deformed, and influences subsequent jet-bedding, sealing, causes jet-bedding, the qualification rate of sealing relatively low, and due to battery core It is non-round to cause the assembling elasticity for being packed into housing higher, it is activating, during use, due to the expansion of pole piece, and diaphragm is opposite Relatively thin, the burr on positive plate easily pierces through diaphragm so as to cause short circuit, causes short circuit ratio, low pressure rate higher, influences battery Performance and service life etc..

Utility model content

The utility model be intended to provide it is a kind of it is simple in structure, pole piece burr can be reduced pierce through diaphragm probability, improve battery core circle The positive plate for nickel-hydrogen cell of radian.

The utility model is realized by following scheme：

A kind of positive plate for nickel-hydrogen cell, the tail end-side of one plane of positive plate regard inclined surface at an angle, the inclination The bottom in face is concordant with the breech face of positive plate, and the distance of bottom to another plane of positive plate of the inclined surface is thick for positive plate The 27~68% of degree；Two planes are arc-shaped with the intersection side view in front and rear sides face respectively up and down for positive plate.Wherein, positive plate The plane definition that is formed of length direction and width direction be upper and lower two plane, length direction and the thickness direction of positive plate are formed Plane definition for front and rear sides face, width direction and the plane definition that thickness direction is formed of positive plate are both ends of the surface end to end.

Further, arc radius of two planes respectively with the intersection side view in front and rear sides face is the positive plate up and down The 25-50% of positive plate thickness.

Further, the distance of the top of the inclined surface to the breech face of positive plate is the 2~6% of anode leaf length.

A kind of positive plate for nickel-hydrogen cell of the utility model, it is simple in structure, it is provided with and inclines in the tail end of one plane of positive plate Inclined-plane, and another plane certain distance of distance from bottom positive plate of inclined surface so that positive plate is after the coiling where inclined surface One plane can suitably correct the whole circular arc degree of battery core, reduce and be packed into difficulty, raising assembling elasticity can be as possible close to housing Battery core is avoided to enter the deformation of shell back casing, follow-up jet-bedding, the qualification rate sealed are improved, to pole piece during cell activation, use Expansion provides certain space, can reduce positive plate burr and pierce through the probability that diaphragm causes short circuit or low pressure with cathode contact；Together When, two planes design arc-shaped positive plate with the intersection in front and rear sides face respectively up and down, can effectively avoid above and below positive plate The burr output of two horizontal edges, the burr for reducing by two planes above and below positive plate pierce through the probability of diaphragm.The one of the utility model Kind positive plate for nickel-hydrogen cell, especially suitable for high-capacity nickel-hydrogen battery.

Description of the drawings

Fig. 1 is the close-up schematic view of the length direction cross section of positive plate for nickel-hydrogen cell in embodiment 1；

Fig. 2 is the enlarged diagram of the width direction cross section of positive plate for nickel-hydrogen cell in embodiment 1.

Specific embodiment

Embodiment is simply to illustrate that a kind of realization method of the utility model, not as to scope of protection of the utility model Restricted explanation.

Embodiment 1

A kind of positive plate for nickel-hydrogen cell, as shown in Figure 1, the tail end-side that one plane of positive plate is upper plane A is regarded in certain angle The inclined surface 1 of degree, the bottom of inclined surface 1 is concordant with the breech face F of positive plate, the bottom of inclined surface 1 to another plane of positive plate That is the distance a of lower plane B is the 64% of positive plate thickness, and the distance b of the breech face F at the top of inclined surface 1 to positive plate is just The 2.8% of pole piece length；As shown in Fig. 2, positive plate two planes A, the B intersection side view with front and rear sides face C, D respectively up and down Arc-shaped and arc radius is the 50% of positive plate thickness.

During winding, the i.e. upper plane A of a plane where the inclined surface of positive plate is placed on diaphragm downward, guarantee has been wound Cheng Hou, the i.e. upper plane A of a plane where the inclined surface of positive plate is close to housing.

Embodiment 2

A kind of positive plate for nickel-hydrogen cell, structure and the structure of the positive plate for nickel-hydrogen cell in embodiment 1 are similar, no It is with part：The distance of the bottom of inclined surface to another plane of positive plate is the 42% of positive plate thickness, the top of inclined surface To positive plate breech face distance be anode leaf length 4.5%, positive plate up and down two planes respectively with front and rear sides face The arc radius of intersection side view is the 37% of positive plate thickness.

Embodiment 3

A kind of positive plate for nickel-hydrogen cell, structure and the structure of the positive plate for nickel-hydrogen cell in embodiment 1 are similar, no It is with part：The distance of the bottom of inclined surface to another plane of positive plate is the 27% of positive plate thickness, the top of inclined surface Distance to the breech face of positive plate is the 6% of anode leaf length, the positive plate two planes phase with front and rear sides face respectively up and down The arc radius of side view is the 25% of positive plate thickness at friendship.

Claims

1. a kind of positive plate for nickel-hydrogen cell, it is characterised in that：The tail end-side of one plane of positive plate regards inclined surface at an angle, The bottom of the inclined surface is concordant with the breech face of positive plate, and the distance of bottom to another plane of positive plate of the inclined surface is The 27~68% of positive plate thickness；Two planes are arc-shaped with the intersection side view in front and rear sides face respectively up and down for positive plate.

2. a kind of positive plate for nickel-hydrogen cell as described in claim 1, it is characterised in that：The positive plate up and down distinguish by two planes Arc radius with the intersection side view in front and rear sides face is the 25-50% of positive plate thickness.

3. a kind of positive plate for nickel-hydrogen cell as claimed in claim 1 or 2, it is characterised in that：The top of the inclined surface is to just The distance of the breech face of pole piece is the 2~6% of anode leaf length.