CN209071394U - A kind of battery cap - Google Patents

Abstract

The utility model discloses a kind of battery caps, include coping plate, lower plastic cement, sealing ring, pole plate, pole and insulation spacer, pole vertically oriented portion is placed through in coping plate, lower plastic cement is set to coping plate lower surface, lower plastic cement is between pole horizontal direction part and coping plate, sealing ring is filled between coping plate and pole vertically oriented portion, and pole plate, insulation spacer are sheathed on pole, and insulation spacer is set between pole plate and coping plate.Sealing ring is filled between coping plate and pole vertically oriented portion in the battery cap of the utility model, compressed sealing ring fills up the gap between coping plate and pole vertically oriented portion, the impurity such as the aluminium skimmings during processing procedure are avoided to enter gap, it is ensured that the battery cap after pressing is between pole vertically oriented portion and coping plate without transparent possibility.

Description

A kind of battery cap

Technical field

The utility model relates to the technical field of battery, in particular to a kind of battery cap.

Background technique

New energy resource power battery is that electric car, electric train, electric bicycle, golf cart etc. provide the storage of power Battery, with the continuous development of the continuous development of New Energy Industry, especially new-energy automobile, the use scale of power battery is got over Come it is bigger, it is also increasingly wider using field.People also becoming increasingly concerned with the security performance of power battery, as composition The performance of the cap assembly of power battery key fitment is just particularly important.

The cap structure of power battery generallys use pressure riveting structure and clip spring structure, integrated injection molding structure currently on the market. It is all to be sealed with sealing ring between coping plate and the pole for wearing coping plate.It is exhausted between coping plate and pole to guarantee Edge, between coping plate and pole tabula plastic parts, after finished product is completed, there is gaps between sealing ring and plastic parts. The impurity such as the aluminium skimmings during processing procedure enter this gap, in testing high voltage insulation performance and pressure-resistant performance, product occur short Road, electric leakage etc. are bad, cause in production test that performance test item is unstable, and it is very big hidden to be assembled into after battery that there is also this Suffer from.

For this purpose, we have proposed a kind of battery caps for reducing high-voltage isulation and high pressure pressure resistance fraction defective.

Utility model content

The main purpose of the utility model is to provide a kind of battery caps, have not breakdown in Hi-pot test Advantage.

To achieve the above object, the utility model provides a kind of battery cap, comprising coping plate, lower plastic cement, sealing ring, Pole plate, pole and insulation spacer, the pole vertically oriented portion are placed through in the coping plate, and the lower plastic cement is set to institute Coping plate lower surface is stated, the lower plastic cement is between pole horizontal direction part and the coping plate, the sealing ring It is filled between the coping plate and the pole vertically oriented portion, the pole plate, the insulation spacer are sheathed on described On pole, the insulation spacer is set between the pole plate and the coping plate.

Preferably, the pole plate includes positive plate, negative plate, and the pole includes positive terminal, negative terminal, the positive plate It is sheathed on the positive terminal, the negative plate is sheathed on the negative terminal.

Preferably, the lower plastic cement is equipped with a positive post holes and a cathode post holes, the positive terminal are placed through the anode In post holes, the negative terminal is placed through in the cathode post holes, and the sealing ring fills up the positive post holes and the negative terminal In hole.

Preferably, the decrement control of the sealing ring is 30%.

Preferably, the positive post holes and the cathode post holes are set as step-like.

Preferably, step-like positive post holes and the cathode post holes separately include top bar, get out of a predicament or an embarrassing situation, described to get out of a predicament or an embarrassing situation Diameter it is 0.25mm at least bigger than the diameter of the top bar, the depth got out of a predicament or an embarrassing situation be greater than 0.3mm.

Preferably, the insulation spacer includes positive plate plastic cement insulation spacer, negative plate plastic cement insulation spacer, the anode Between the positive plate and the coping plate, the negative plate plastic cement insulation spacer is located at described negative plate plastic cement insulation spacer Between pole plate and the coping plate.

Preferably, the battery cap also includes explosion-proof valve and pad pasting, and the explosion-proof valve is set in the coping plate, institute It states pad pasting and is attached at the explosion-proof valve surface.

Compared with prior art, the utility model has the following beneficial effects: being sealed in the battery cap of the utility model Circle is filled between coping plate and pole vertically oriented portion, and compressed sealing ring fills up coping plate and pole vertical direction portion / gap, avoid the impurity such as the aluminium skimmings during processing procedure from entering gap, it is ensured that the battery cap after pressing exists Without transparent possibility between pole vertically oriented portion and coping plate.

Detailed description of the invention

Fig. 1 is the three-dimensional structure diagram of the utility model embodiment battery cap.

Fig. 2 a is the top view of the utility model embodiment battery cap.

Fig. 2 b is the sectional view of the section A-A of battery cap in Fig. 2 a.

Specific embodiment

To be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, below In conjunction with specific embodiment, the utility model is further described.

Battery cap 100 is used for the accessory protected to the battery portion of new energy resource power battery.Based on power battery The considerations of security performance, need to ensure battery cap 100 in the test such as high-voltage isulation performance and pressure-resistant performance, do not occur short circuit or The bad phenomenons such as electric leakage.

Fig. 1 is the three-dimensional structure diagram of the utility model embodiment battery cap 100, and Fig. 2 a is the utility model embodiment electricity The top view of pond top cover 100, Fig. 2 b are the sectional view of the section A-A of battery cap 100 in Fig. 2 a.Fig. 1, Fig. 2 a and Fig. 2 b are electricity The schematic diagram of 100 different perspectives of pond top cover is described in detail in conjunction with specific structure of the above-mentioned attached drawing to battery cap 100:

Shown in a and Fig. 2 b as shown in Figure 1, Figure 2, the battery cap 100 of the present embodiment includes coping plate 10, lower plastic cement 30 and pole Column.Wherein, pole include vertically oriented portion and horizontal direction part, pole vertically oriented portion be arranged along the vertical direction and with The connection of pole horizontal direction part, pole vertically oriented portion are placed through in coping plate 10, and lower plastic cement 30 is set to coping plate 10 Lower surface, lower plastic cement 30 is between pole horizontal direction part and coping plate 10.Furthermore the battery cap 100 of the present embodiment Pole be the two poles of the earth pole, pole include positive terminal 21, negative terminal 22, positive terminal 21, negative terminal 22 are placed through coping plate respectively 10 two sides.

Please continue to refer to Fig. 1, Fig. 2 a and Fig. 2 b, the battery cap 100 of the present embodiment also includes sealing ring, wherein lower modeling Glue 30 is equipped with a positive post holes (not shown) and a cathode post holes (not shown), positive terminal 21 are placed through in positive post holes, Negative terminal 22 is placed through in cathode post holes, and sealing ring fills up in positive post holes and cathode post holes, and sealing ring is filled in coping plate 10 It between pole vertically oriented portion in gap, that is, include two sealing rings, sealing ring includes that positive sealing ring 41 and cathode are close A sealing ring is respectively equipped at seal 42, positive terminal 21 and negative terminal 22.Preferably, the decrement control of sealing ring is left for 30% The right side, compressed sealing ring fill up positive post holes and cathode post holes；Or the volume of sealing ring is slightly larger than positive post holes and negative terminal Hole, using interference fit；It both can be to there is good sealing effect between pole and coping plate 10, then between the two without can wear Saturating possibility.

Furthermore the positive post holes and cathode post holes of the present embodiment are set as step-like, step-like positive post holes and negative terminal Hole separately includes top bar, gets out of a predicament or an embarrassing situation, and the diameter got out of a predicament or an embarrassing situation is 0.25mm at least bigger than the diameter of top bar, and the depth got out of a predicament or an embarrassing situation is big In 0.3mm.Then, in riveting 100 finished product of battery cap, if thering are aluminium skimmings or other miniature sundries to enter pole and coping plate 10 Between gap, when sealing ring compression-expansion, it would be possible to existing impurity all promotes lower 30 pole column holes of plastic cement to get out of a predicament or an embarrassing situation place, then The top bar of lower 30 pole column hole of plastic cement is sealed, then, equally can guarantee that the sealing effect between pole and coping plate 10 is good.

Further, the battery cap 100 of the present embodiment includes also pole plate, insulation spacer, and pole plate, insulation spacer are arranged In on pole, insulation spacer is set between pole plate and coping plate 10, and pole plate includes positive plate 51, negative plate 52, and 51 sets of positive plate On positive terminal 21, negative plate 52 is sheathed on negative terminal 22.Furthermore insulation spacer includes positive plate plastic cement insulation spacer 61, negative plate plastic cement insulation spacer 62, positive plate plastic cement insulation spacer 61 is between positive plate 51 and coping plate 10, negative plate Plastic cement insulation spacer 62 is between negative plate 52 and coping plate 10.

Furthermore the battery cap 100 of the present embodiment also includes explosion-proof valve and pad pasting, and explosion-proof valve is set in coping plate 10, patch Film is attached at explosion-proof valve surface.

Compared with prior art, the utility model has the following beneficial effects: it is close in the battery cap 100 of the utility model Seal is filled between coping plate 10 and pole vertically oriented portion, and it is vertical with pole that compressed sealing ring fills up coping plate 10 Gap between the part of direction avoids the impurity such as the aluminium skimmings during processing procedure from entering gap, it is ensured that the battery after pressing Top cover 100 is between pole vertically oriented portion and coping plate 10 without transparent possibility.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above.Current row The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model Claimed range is defined by the appending claims and its equivalent thereof.

Claims (8)

1. a kind of battery cap, which is characterized in that include coping plate, pole, lower plastic cement, sealing ring, pole plate and insulation spacer, institute It states pole vertically oriented portion to be placed through in the coping plate, the lower plastic cement is set to the coping plate lower surface, under described Plastic cement between pole horizontal direction part and the coping plate, the sealing ring be filled in the coping plate with it is described Between pole vertically oriented portion, the pole plate, the insulation spacer are sheathed on the pole, and the insulation spacer is set to Between the pole plate and the coping plate.

2. battery cap according to claim 1, which is characterized in that the pole plate includes positive plate, negative plate, the pole Column includes positive terminal, negative terminal, and the positive plate is sheathed on the positive terminal, and the negative plate is sheathed on the negative terminal On.

3. battery cap according to claim 2, which is characterized in that the lower plastic cement is equipped with a positive post holes and a cathode Post holes, the positive terminal are placed through in the positive post holes, and the negative terminal is placed through in the cathode post holes, the sealing ring It fills up in the positive post holes and the cathode post holes.

4. battery cap according to claim 1, which is characterized in that the decrement control of the sealing ring is 30%.

5. battery cap according to claim 3, which is characterized in that the anode post holes and the cathode post holes are set as platform Scalariform.

6. battery cap according to claim 5, which is characterized in that the step-like positive post holes and the negative terminal Hole separately includes top bar, gets out of a predicament or an embarrassing situation, and the diameter got out of a predicament or an embarrassing situation is 0.25mm at least bigger than the diameter of the top bar, under described The depth of step is greater than 0.3mm.

7. battery cap according to claim 2, which is characterized in that the insulation spacer includes positive plate plastic cement felt pad Piece, negative plate plastic cement insulation spacer, the positive plate plastic cement insulation spacer is between the positive plate and the coping plate, institute Negative plate plastic cement insulation spacer is stated between the negative plate and the coping plate.

8. battery cap according to claim 1, which is characterized in that also include explosion-proof valve and pad pasting, the explosion-proof valve is set In in the coping plate, the pad pasting is attached at the explosion-proof valve surface.