CN203119037U - Improved structure of secondary battery - Google Patents

Abstract

The utility model provides an improved structure of secondary battery, it has an electric core to wind on its axle core, its both ends are equipped with integrated into one piece's utmost point ear can be for the first utmost point ear of positive terminal and the second utmost point ear of negative pole end, the both ends of electric core are equipped with two current-collecting discs, and current-collecting disc is by utmost point ear cladding, expose a handle portion of leading, two current-conducting discs, laminate in utmost point ear, and lead that electric disc central authorities are equipped with a perforation, make handle portion wear out from this, a casing, its one end is the blind end, the other end is the open end, the holding electricity core in the casing, the blind end is equipped with a trompil and can make handle portion wear out by the trompil, and the open end is equipped with a lid, it can make handle portion wear out also to be equipped with a hole, and the. The utility model can not only provide a structure with higher toughness, but also can be automatically and rapidly assembled.

Description

Improved Structure of Secondary Batteries

technical field

The utility model relates to a secondary battery, in particular to an improved structure of a secondary battery that can be automated and rapidly manufactured.

Background technique

A battery, in the old and narrow sense, is a device that converts its own stored chemical energy into electrical energy. The newer and broad definition refers to a device that converts energy other than mechanical energy into electrical energy, which is our existing generator. . However, due to the high pollution and the non-reusable relationship of traditional primary batteries, they have been gradually eliminated and replaced by reusable and easily recyclable secondary batteries, which have become the main source of various power supplies.

Figure 1 is a schematic diagram of the structure of the existing secondary battery, as shown in the figure, the tabs 10 need to be additionally processed and welded to the battery cell 12, and then inserted into the connecting guide rods 14 one by one, using a conductive terminal 16 to lock Hold the guide rod 14 to fix the lug part 10, and then insert an inner insulating washer 18 and an end cover 20 on the conductive terminal 16, and the two end covers 20 close the two ends of the housing 22; outside the housing 22, Then put an outer insulating washer 24 into the conductive terminal 16 protruding from the housing 22, and lock the conductive terminal 16 with an outer nut 26, and tighten the end cover 20 and the housing by rotating the outer nut 26. 22 tightly combined, and presses the through hole of the inner insulating gasket 18 and the outer insulating gasket 24 airtight end cover 20, so as to avoid the chance of the cell 12 changing due to air infiltration.

Due to the large number of components in the traditional secondary battery, the process of assembling the secondary battery is complicated, which is very time-consuming, and there is a possibility of assembly errors; moreover, the guide rod 14 is slender and insufficient in strength. , that is, it is easy to cause the guide rod 14 to break, and the conductive terminal 16 may be displaced, and it is also easy to make the secondary battery not durable for long-term use, and there is a possibility of electrolyte leakage.

In view of this, the utility model aims at the above-mentioned problems, and proposes an improved structure of a secondary battery to effectively solve the existing problems.

Contents of the invention

The main purpose of the utility model is to provide an improved structure of the secondary battery, which has few parts, simple structure, automatic manufacture, quick assembly and saving time and cost.

Another object of the present invention is to provide an improved structure of a secondary battery, which can provide a stronger structure of the secondary battery, less likely to damage components during assembly, and provide a more durable secondary battery.

For realizing above-mentioned object, the technical scheme that the utility model adopts is:

An improved structure of a secondary battery, characterized by comprising:

a mandrel;

A cell, wound on the mandrel, and provided with a plurality of integrally formed lugs at both ends, the lugs at both ends are the first lug of the positive end and the second lug of the negative end department;

Two current collectors are arranged at both ends of the mandrel, and the current collectors are covered by the lugs and expose a guide handle;

Two conductive discs are attached to the tab part, and a perforation is provided in the center of the conductive disc, and the guide handle is pierced through the perforation of the conductive disc;

A casing for accommodating the electric core, one end of the casing is a closed end, the other end is an open end, the closed end is provided with an opening, and the guide handle passes through the opening of the closed end;

A cover body is arranged at the opening end, and a hole is provided on the cover body for the guide handle to pass through; and

Two terminal locks are respectively locked on the guide handle.

The improved structure of the secondary battery further includes at least two insulating sheets, which are respectively arranged on the two conductive plates.

In the improved structure of the secondary battery, an insulating ring is provided on the outer edge of the conductive plate, and at least one liquid inlet hole is provided on the insulating ring.

The improved structure of the secondary battery, wherein: the cover body is provided with a safety valve and at least one liquid injection hole integrally formed, wherein the liquid injection hole is aligned with the liquid inlet hole.

The improved structure of the secondary battery, wherein: the cover is provided with a ring protrusion on the outside of the closed end.

The improved structure of the secondary battery further includes at least two insulating glues respectively arranged in the ring protrusion.

The improved structure of the secondary battery, wherein: the electric core is formed by stacking and winding a positive electrode sheet, at least two separators and a negative electrode sheet.

Compared with the prior art, the utility model adopting the above technical solution has the advantages that the utility model has few parts and a simple structure, which can effectively speed up the assembly speed and save time and cost, and the pole ear part and the battery core are integrally formed, There is no need for additional welding, which makes the structure simpler, and it is more convenient to provide automatic manufacturing processes without consuming extra manpower.

Description of drawings

Fig. 1 is the structural representation of existing secondary battery;

Fig. 2 is a perspective view of an embodiment of the utility model;

Fig. 3 is an exploded view of components of an embodiment of the utility model;

Fig. 4 is a schematic cross-sectional view of an embodiment of the utility model;

FIG. 5A to FIG. 5I are structural schematic diagrams of each step of manufacturing the secondary battery of the present invention.

Explanation of reference signs: 10 tab; 12 battery core; 14 guide rod; 16 conductive terminal; 18 inner insulating washer; 20 end cover; 22 shell; 24 outer insulating washer; 26 outer nut; 30 secondary battery; 32 mandrel; 34 electric core; 36 collector plate; 38 conductive plate; 40 insulating sheet; 42 shell; 44 cover; 46 terminal lock; 48 insulating glue; 340 first pole ear; 342 second pole ear; 3422 positive plate; 3442 negative plate; 346 separator; 348 electric chip; 360 guide handle; 380 perforation; 382 insulating ring; 420 closed end; 422 open end; 440 hole; 446 ring protrusion; 3820 liquid inlet hole; 4202 open hole.

Detailed ways

The utility model provides a secondary battery that can be automatically assembled, and provides a stronger structure and components, can be quickly installed during assembly, and is less likely to damage the components, thereby providing a more durable secondary battery.

Please refer to FIG. 2 , FIG. 3 and FIG. 4 , which are perspective views, exploded views and cross-sectional views of the present invention. As shown in the figure, the utility model consists of a mandrel 32, iron rings can be added at both ends of the mandrel 32 to enhance the strength of the mandrel 32, and a cell 34 is stacked by a positive electrode piece, at least two separators and a negative electrode interval Wound on the mandrel 32, the opposite sides of the positive electrode sheet and the negative electrode sheet respectively have integrally formed first tabs 340 and second tabs 342, so that the first tabs 340 and the second tabs 342 are respectively located at both ends of the electric core 34 to serve as two electrodes; two collector discs 36 are arranged at both ends of the mandrel 32, and the collector discs 36 are covered by the lugs, and only a guide handle on the collector disc is exposed. part 360, two conductive disks 38 are attached to the lug part, and a perforation 380 is provided in the center, so that the guide handle part 360 can pass through the perforation 380, wherein an insulating ring 382 is provided on the periphery of the conductive disk 38, and the insulating ring 382 is provided with at least one liquid inlet hole 3820, because the liquid inlet hole 3820 is a channel for injecting the battery conductive liquid, so it must be ensured that the liquid inlet hole 3820 cannot be blocked by the tab, and the liquid inlet hole 3820 should be kept unimpeded; at least two insulating sheets 40 are respectively arranged on the two conductive plates 38; and there is a housing 42, one end of which is a closed end 420, and the other end is an open end 422, the housing 42 can accommodate the electric core 34, and the closed end 420 is provided with an opening 4202, When the electric core 34 is packed into the housing 42, the guide handle portion 360 can be passed through the opening 4202; a cover 44 is arranged on the opening end 422, and the cover 44 is provided with a hole 440, and An integrally formed safety valve 442 and at least one liquid injection hole 444 are provided, wherein the safety valve 442 can be exhausted to avoid excessive gas pressure in the housing 42 during installation, and the liquid inlet hole 3820 should be aligned with the liquid injection hole 444 so that The conductive liquid can be injected into the housing 42 through this, and the cover 44 and the closed end 420 are provided with two ring protrusions 446 to strengthen the structural strength. The two terminal locks 46 are locked on the guide handles 360 on both sides of the secondary battery 30. The guide handles 360 are provided with threads corresponding to the terminal locks 46, which can be combined with the terminal locks 46, and the terminal locks 46 are locked on the ring. The inside of the protrusion 446 and the ring protrusion 446 can be provided with insulating glue 48 to fix the terminal lock 46 and strengthen the overall structure at the same time.

After explaining the structure of the utility model, continue explaining the structural schematic diagrams of each step of making the secondary battery of the utility model, please refer to Figure 5A to Figure 5I, first, as shown in Figure 5A, cut the integrally formed tab part on A positive electrode sheet 3422 and a negative electrode sheet 3442 . Next, as shown in FIG. 5B , a positive electrode sheet 3422 and a negative electrode sheet 3442 are separated by alternate lamination of a positive electrode sheet 3422 , at least two separators 346 , and a negative electrode sheet 3442 to form a set of electrical chips 348 . As shown in FIG. 5C , the stacked electric chip 348 is wound on a mandrel 32 to form an electric core 34 with a plurality of tabs at both ends, that is, a second pole is formed on both sides of the electric core. One lug portion 340 and the second lug portion 342 to form two electrodes; FIG. 5D, the lug portion is spread out, and one end of the mandrel 32 is exposed and a collector plate 36 is fixed on the mandrel 32 wherein 1 end, as shown in Figure 5E, fold in the part of the tab part close to the collector plate 36, and then fold the tab part into the covered collector plate 36, and expose a guide handle 360, then Fix a collector plate 36 on the other end of the mandrel 32, wherein the steps are the same as the above-mentioned fixing collector plate 36, so the description will not be repeated; next please refer to FIG. 5F, which pastes at least two conductive plates 38 on the lugs at both ends , and the guide handle portion 360 can pass through the conductive disk 38, and the conductive disk 38 can be pasted with adhesive tape or other insulating materials, the conductive disk 38 is insulated and fixed, and two insulating sheets are placed on the conductive disk 38. Next, as shown in Figure 5G, the battery cell 34 is loaded into the housing 42, and the guide handle 360 is passed through the closed end 420 of the housing 42; Figure 5H, cover the cover 44, and make the guide handle 360 passes through the cover body 44 and joins the cover body 44 and the housing 42. The cover body 44 and the housing 42 can be joined by laser or spot welding; finally, please refer to FIG. 5I to lock the two guide handles 360 On the second terminal lock 46, one of the ends must be fixed first when locking the terminal lock 46, so as not to cause the battery cell 34 to rotate as a whole when locking the terminal lock 46, causing damage to the battery cell 34, or to rotate the second terminal lock 46 in the opposite direction. Adjusting to the corresponding direction can also prevent the battery cell 34 from being damaged by rotation, and finally pour insulating glue into the ring protrusion 446 to fix the terminal lock 46 and strengthen the overall structure of the secondary battery.

Based on the above, the utility model has few parts and simple structure, which can effectively speed up the assembly speed and save time and cost. In addition, the tab part and the battery core are integrally formed without additional welding, making the structure simpler and more reliable. It is convenient to provide automatic manufacturing process without consuming extra manpower.

The above description is only illustrative, rather than restrictive, of the present utility model. Those of ordinary skill in the art understand that many modifications, changes or equivalents can be made without departing from the spirit and scope defined in the claims. But all will fall within the protection scope of the present utility model.

Claims (7)

1. the improvement structure of a secondary cell is characterized in that, comprising:

One mandrel;

One electric core is wound on this mandrel, and is provided with a plurality of integrated lug portion at two ends, and this lug at two ends partly is the first lug portion of positive terminal and the second lug portion of negative pole end;

Two current collection dishes are arranged at the two ends of this mandrel, and this current collection dish coated by this lug portion, and expose and lead shank;

Two conductive plates, this lug portion that fits, and be provided with a perforation in these conductive plate central authorities, this is led shank and is passed by the perforation of this conductive plate;

One housing, ccontaining should the electricity core, this housing one end is a blind end, the other end is an openend, this blind end is provided with a perforate, this is led shank and is passed by this perforate of this blind end;

One lid is arranged at this openend, and this lid is provided with a hole and leads shank for this and pass; And

Two terminal locks lock in this respectively and lead on the shank.

2. the improvement structure of secondary cell according to claim 1, it is characterized in that: also comprise at least two insulating trips, it is arranged at respectively on two these conductive plates.

3. the improvement structure of secondary cell according to claim 1, it is characterized in that: this conductive plate outer rim is provided with a dead ring, and this dead ring is provided with at least one liquid-entering hole.

4. the improvement structure of secondary cell according to claim 3, it is characterized in that: this lid is provided with an integrated safety valve and at least one liquid injection hole, and wherein this liquid injection hole is aimed at this liquid-entering hole.

5. the improvement structure of secondary cell according to claim 1 is characterized in that: be provided with a ring with this blind end outside on this lid and dash forward.

6. the improvement structure of secondary cell according to claim 5 is characterized in that: also comprise at least two insulating cements, be arranged at respectively this ring prominent in.

7. the improvement structure of secondary cell according to claim 1 is characterized in that: this electricity core is formed by a positive plate, two barrier films and the stacked coiling of a negative plate at least.

Images