CN202159732U

CN202159732U - Positive plate and battery

Info

Publication number: CN202159732U
Application number: CN2011202207817U
Authority: CN
Inventors: 苏养湘; 秦保太; 孔令坤; 李文良
Original assignee: Shenzhen Highpower Technology Co Ltd
Current assignee: Shenzhen Highpower Technology Co Ltd
Priority date: 2011-06-27
Filing date: 2011-06-27
Publication date: 2012-03-07
Anticipated expiration: 2021-06-27

Abstract

The utility model relates to a positive plate which is provided with two ends along the winding direction. One end is a starting end, and the other end is a tail end. The width of the positive plate is gradually decreased from the starting end to the tail end along the winding direction. The width of the positive plate is gradually decreased from the starting end to the tail end along the winding directing, and the width of the tail end is smaller than that of the remaining portion of the positive plate, so that an outer ring of the positive plate is not easy to be sealed when the positive plate is sealed. Accordingly the problem causing zero charge short circuit is solved, a battery is effectively prevented from being damaged, and the battery is prevented from being discarded. The utility model further provides a battery.

Description

Positive plate and battery

[technical field]

The utility model relates to a kind of positive plate and battery.

[background technology]

At present, for obtaining the more Ni-MH battery of high power capacity, need to increase the amount of active material in the positive plate, the amount of active material directly determines the capacity of battery in the positive plate.

For increasing the amount of active material, under the situation that guarantees padding and compacting density and entire cell elasticity, need to increase the width of pole piece, the width of positive plate is bigger.But, owing to adopt the mode of pier envelope during battery seal, positive plate pole piece broad, easy pier causes the problem of zero electrical short to the outer ring positive plate during pier envelope, causes battery to damage and scraps.

[utility model content]

In view of this, be necessary to provide a kind of positive plate that prevents that battery from damaging.

A kind of positive plate has two ends along coiling direction, and wherein an end is the roll set end, and the other end is a tail end, and said positive plate width diminishes to tail end from the roll set end along coiling direction gradually.

Preferably, said positive plate is domatic along coiling direction, and width is progressively diminished by said roll set end to tail end.

Preferably, said positive plate is notch cuttype along coiling direction, and said tail end is in the minimum ladder of width.

Preferably, said positive plate constitutes by the different sub-positive plate of a plurality of width is end to end, and the minimum sub-positive plate of width is in tail end.

Preferably, said positive plate width is identical by roll set end to positive plate middle part, and the positive plate width is domatic by the positive plate middle part to tail end, and width diminishes gradually.

A kind of battery comprises negative plate, barrier film and positive plate, and said positive plate has two ends along coiling direction, an end roll set end wherein, and the other end is a tail end, said positive plate width diminishes to tail end from the roll set end along coiling direction gradually.

Above-mentioned positive plate and battery; The positive plate width diminishes to tail end from the roll set end along coiling direction gradually; The width of tail end is less than the width of positive plate remainder, be not easy during the pier envelope pier to the outer ring positive plate, thereby solve the problem that causes zero electrical short; Effectively prevent to cause battery to damage, avoid battery to scrap.

[description of drawings]

Fig. 1 is the structural representation of positive plate among the embodiment;

Fig. 2 is the structural representation of positive plate among another embodiment;

Fig. 3 is the structural representation of positive plate among another embodiment;

Fig. 4 is the structural representation of positive plate among another embodiment.

[embodiment]

Below in conjunction with accompanying drawing, the embodiment of the utility model is described in detail.

This positive plate has two ends along coiling direction, and wherein an end is the roll set end when reeling, and the other end is a tail end, and the positive plate Width is vertical with coiling direction.This positive plate width diminishes to tail end from the roll set end along coiling direction gradually.The width of positive plate tail end is less than the width of positive plate remainder.

Fig. 1 is the structural representation of positive plate among the embodiment.The neat degree of reeling and reeling for positive plate 100 is convenient to, this positive plate 100 are domatic along coiling direction, and width is progressively diminished by roll set end 110 to tail end 120, and the width of tail end 120 is less than the width of positive plate 100 remainders.In preferred embodiment, positive plate downside 140 horizontal no changes, upside 130 is domatic and diminishes gradually.

Fig. 2 is the structural representation of positive plate among another embodiment.This positive plate 200 is stairstepping along coiling direction, and tail end 220 is in the minimum ladder of width.In preferred embodiment, this positive plate is the secondary ladder, positive plate downside 240 horizontal no changes, and upside 230 is stairstepping and diminishes gradually, and roll set end 210 respectively is in the one-level ladder with tail end 220.

Fig. 3 is a positive plate structural representation among another embodiment.This positive plate 300 is that with positive plate difference shown in Figure 1 positive plate 300 width are identical by roll set end 310 to positive plate middle part, and positive plate 300 width are domatic by the positive plate middle part to tail end 320, and width diminishes gradually, and the gradient is 0 to 90 degree.

Fig. 4 is the structural representation of positive plate among another embodiment.This positive plate 400 is with positive plate difference shown in Figure 2, is provided with the above ladder of two-stage between roll set end 410 and the tail end 420.

The described positive plate of Fig. 1 to Fig. 4 is all one-body molded through mode such as die-cut, as to cut.

This positive plate, the width of tail end be less than the width of positive plate remainder, be not easy during the pier envelope pier to the outer ring positive plate, thereby solve the problem that causes zero electrical short, effectively prevent to cause the battery damage, avoid battery to scrap.

In other embodiments, positive plate also can constitute by the different sub-positive plate of a plurality of width is end to end, and the minimum sub-positive plate of width is in tail end.

In addition, a kind of battery is provided also, this battery comprises positive electrode cap, positive plate, negative plate, barrier film or the like, and wherein, positive plate is above-mentioned positive plate.

The above embodiment has only expressed several kinds of execution modes of the utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to the protection range of the utility model.Therefore, the protection range of the utility model patent should be as the criterion with accompanying claims.

Claims

1. a positive plate has two ends along coiling direction, and wherein an end is the roll set end, and the other end is a tail end, it is characterized in that, said positive plate width diminishes to tail end from the roll set end along coiling direction gradually.

2. positive plate according to claim 1 is characterized in that said positive plate is domatic along coiling direction, and width is progressively diminished by said roll set end to tail end.

3. positive plate according to claim 1 is characterized in that said positive plate is notch cuttype along coiling direction, and said tail end is in the minimum ladder of width.

4. positive plate according to claim 1 is characterized in that, said positive plate constitutes by the different sub-positive plate of a plurality of width is end to end, and the minimum sub-positive plate of width is in tail end.

5. positive plate according to claim 1 is characterized in that, said positive plate width is identical by roll set end to positive plate middle part, and the positive plate width is domatic by the positive plate middle part to tail end, and width diminishes gradually.

6. a battery comprises negative plate, barrier film and positive plate, and said positive plate has two ends along coiling direction, an end roll set end wherein, and the other end is a tail end, it is characterized in that, said positive plate width diminishes to tail end from the roll set end along coiling direction gradually.

7. battery according to claim 6 is characterized in that said positive plate is domatic along coiling direction, and width is progressively diminished by said roll set end to tail end.

8. battery according to claim 6 is characterized in that said positive plate is notch cuttype along coiling direction, and said tail end is in the minimum ladder of width.

9. battery according to claim 6 is characterized in that, said positive plate constitutes by the different sub-positive plate of a plurality of width is end to end, and the minimum sub-positive plate of width is in tail end.

10. positive plate according to claim 6 is characterized in that, said positive plate width is identical by roll set end to positive plate middle part, and the positive plate width is domatic by the positive plate middle part to tail end, and width diminishes gradually.