CN201820857U

CN201820857U - High-capacity nickel-hydrogen battery cell structure

Info

Publication number: CN201820857U
Application number: CN2010205601806U
Authority: CN
Inventors: 邱钟明; 吴爱深; 邝达辉
Original assignee: Shida Battery Technology Co Ltd
Current assignee: Shida Battery Technology Co Ltd
Priority date: 2010-10-13
Filing date: 2010-10-13
Publication date: 2011-05-04
Anticipated expiration: 2020-10-13

Abstract

The utility model discloses a high-capacity nickel-hydrogen battery cell structure which comprises a positive plate, a negative plate, a positive pole lug, a negative pole lug and a diaphragm, wherein the positive pole lug is connected to the positive plate, the negative pole lug is connected to the negative plate, only one negative plate and one diaphragm are provided, more than one positive plate are provided, and the positive plates are connected end to end and are laid on the diaphragm. The nickel-hydrogen battery cell with the structure has the main advantages that firstly, since the positive plates are shorter and are easy to manufacture, the proficiency level requirement to equipment and operators is relatively low, the occupied area for storing the plates is smaller, and the plates are easy to store and carry; secondly, the buckling rate of the positive plates is low, and the material utilization rate is effectively improved; thirdly, since the positive plates are shorter, the positions of the plates are easy to adjust during winding, the phenomenon of oblique winding during winding process can be effectively prevented, and the production efficiency and the finished product ratio can be improved.

Description

A kind of big capacity Ni-MH battery core strueture

Technical field:

The utility model relates to a kind of big capacity Ni-MH battery core strueture.

Background technology:

Ni-MH battery has the specific capacity height as the typical case of the green battery of novel high-performance representative, and unleaded, cadmium heavy metal, advantage such as electric current fast charging and discharging greatly obtain extensive use in small-sized portable electronic device.Along with the continuous development of technology, and the becoming increasingly conspicuous of energy problem and environmental problem, big capacity Ni-MH battery also obtains application more and more widely on electric tool, motor vehicle and motor vehicle driven by mixed power.

In theory, the external diameter of column type Ni-MH battery is big more, and battery capacity is high more, and the size of desired positive/negative plate is also just long more.But pole piece is long more, and also just high more to the requirement of production equipment and operating personnel's qualification, simultaneously, the long damage rate that also increases easily in the production process of pole piece causes the waste of material.

Usually, the structure that big capacity Ni-MH battery such as D type, F type is manufactured adopts a positive plate and a negative plate still as ting models such as AAA, AA, adds the direct shell of reeling of a barrier film, through annotating alkali, sealing, change into, is the finished product battery.But because big model high capacity cells such as D type, F type, after adopting such structure because anode pole piece is oversize, add anode pole piece itself is not weak soft, more crisp, so this structure, exist some problems in the big capacity Ni-MH battery manufacturing process such as D type, F type:

1. the positive plate size is long, and is to making required equipment requirements height, also high to the requirement of workman's qualification; 2. the positive plate size is long, and positive plate takes up room greatly, and is not easy to store and mobile; 3. the positive plate size is long, and the pole piece damage rate is big in battery manufacturing process, causes stock utilization low; 4. the positive plate size is long, is difficult for adjusting the position of pole piece in the winding process, causes volume tiltedly to increase battery easily and bad phenomenons such as zero electricity occur.

Summary of the invention:

The purpose of this utility model be easy to deposit in order to overcome the shortcoming of above-mentioned prior art, to provide a kind of, damage rate is few, reel to be easy to big capacity Ni-MH battery core strueture.

For achieving the above object, the technical scheme that the utility model provides is: a kind of big capacity Ni-MH battery core strueture, include positive plate, negative plate, anode ear, negative electrode lug and barrier film, anode ear is connected on the positive plate, negative electrode lug is connected on the negative plate, negative plate and barrier film are all only established a slice, and positive plate is more than a slice, and positive plate is end to end to be layed on the barrier film.

The advantage of the Ni-MH battery of this structure electricity core mainly is: 1. shorter because of positive plate, make easily, and equipment and operating personnel's qualification is required relatively low, it is less that pole piece stores area occupied, easy to store and carry; 2. the positive plate damage rate is low, has effectively improved the utilance of material; 3. because positive plate is shorter, adjust the pole piece position when reeling easily, can effectively prevent to occur the oblique phenomenon of volume in the winding process, enhance productivity and rate of finished products.

Description of drawings:

Fig. 1 is the structural representation of the big capacity Ni-MH battery electricity of the utility model core.

Embodiment:

Now elaborate the utility model in conjunction with the accompanying drawings:

Adopting the utility model to come the making capacity is the Ni-MH battery of 8500mA.h, this battery during by existing structure fabrication the positive plate specification be 560.0mm * 46.0mm, totally two of the little positive plates 1 that employing the utility model is made, negative plate 2 and barrier film 3 all are a slice, on every positive plate, all be provided with anode ear 4, on negative plate 2, be provided with negative electrode lug 5, the length of negative plate 2 and the barrier film 3 all length than two little positive plate additions is slightly long, the specification of every little positive plate then is 280.0mm * 46.0mm, during coiling, spread first positive plate earlier, reel then, then place second positive plate after having reeled, continue then to reel, thereby make required electric core, manufacture method is to adopt the collector of foaming nickel as positive plate, and the specification of collector is cut to 542.0mm * 50.0mm, is that the lug cutter of 4.0mm is suppressed continuous nickel strap position in the nickel centre position of foaming with width, then the foaming Ni substrate is carried out precompressed, precompressed thickness is 1.0mm.Positive powder, binding agent, water are modulated to anode sizing agent according to a certain percentage, through slurry anode sizing agent is coated on the foaming Ni substrate, again drying, be rolled into the little positive plate of 0.5mm.The cleaning of positive powder on the lug groove position is clean, cut out the unhairing limit, welding the lug that width is 6.0mm on the nickel band then, and be that the nickel strap bar of 2.0mm is welded on the nickel strap groove position with the width of equal length, cut out after welding finishes and remove unnecessary lug, select suitable adhesive plaster then to pasting nickel strap bar and lug, in addition, putting top small pieces during except coiling only needs tail end to paste the little adhesive plaster, and little adhesive plaster all need be pasted in the little positive plate head and the tail of another one two ends.Battery changes into after making and finishing, and uses the 0.1C preliminary filling to use 0.1C charging 14 hours after 3 hours, shelves 24 hours, fills 16 hours with 0.1C then, with 0.1C discharge 5 hours, carries out partial volume with 0.2C at last again.

The little positive plate of this structure can be more than two, and each positive plate can be a length inequality.These little positive plates are layed in order and finish coiling on the barrier film one by one, qualified utmost point volume.During coiling,, revise the coiling deviation in the winding process easily, and long one pole sheet is difficult to revise, and can only roll up more inclined to one side and more inclined to one side owing to be broken-up laying.Owing to pole piece fragment after the segmentation is shorter, be easy to deposit and carry, and also drop to minimum simultaneously operative employee's requirement.The principle of this anodal segmental structure be with a high capacity cell within it portion be decomposed into two or more baby battery parallel connections, because the capacity of battery depends on anodal capacity, anodal segmental structure just is equivalent to inner parallel connection, so can not can influence the capacity of battery.

Above-mentioned is illustrative rather than determinate with reference to embodiment to the description that this big capacity Ni-MH battery electricity core carries out, and therefore in the variation and the modification that do not break away under the utility model general plotting, should belong within the protection range of the present utility model.

Claims

1. one kind big capacity Ni-MH battery core strueture, include positive plate, negative plate, anode ear, negative electrode lug and barrier film, anode ear is connected on the positive plate, negative electrode lug is connected on the negative plate, negative plate and barrier film are all only established a slice, it is characterized in that: positive plate is more than a slice, and positive plate is end to end to be layed on the barrier film.