CN220358266U - Explosion-proof cover plate of battery and battery - Google Patents

Abstract

The utility model discloses a battery explosion-proof cover plate and a battery, wherein the battery explosion-proof cover plate comprises: the cover body is provided with an outer end face and an inner end face which are opposite to each other, and is provided with a mounting through hole communicated with the outer end face and the inner end face; the post comprises a main body part and a blasting part, wherein the main body part is connected to the installation through hole, an exhaust passage is arranged in the main body part, the blasting part is connected with the main body part into an integrated structure and cuts off the exhaust passage, and the blasting part can blast when bearing the acting force of a first preset value so that the exhaust passage is communicated with the outer end face and the inner end face. The battery using safety can be improved, the cost is saved, and the manufacturing efficiency is improved. The utility model is applied to the field of battery explosion-proof structures.

Description

Explosion-proof cover plate of battery and battery

Technical Field

The utility model relates to the field of battery explosion-proof structures, in particular to a battery explosion-proof cover plate and a battery.

Background

The existing large-cylinder full-lug battery cover plate is provided with an explosion-proof valve at the negative electrode, so that safety is improved by arranging the explosion-proof valve at each of the positive and negative electrode cover plates, however, the probability of defects such as welding pores, explosion points and the like is increased due to the increase of the installation laser welding of the explosion-proof valve, and cost is correspondingly increased.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the battery explosion-proof cover plate, which can improve the use safety of the battery, save the cost and improve the manufacturing efficiency.

According to an embodiment of the first aspect of the utility model, a battery explosion-proof cover plate comprises:

the cover body is provided with an outer end face and an inner end face which are opposite to each other, and is provided with a mounting through hole communicated with the outer end face and the inner end face;

the post comprises a main body part and a blasting part, wherein the main body part is connected to the installation through hole, an exhaust passage is arranged in the main body part, the blasting part is connected with the main body part into an integrated structure and cuts off the exhaust passage, and the blasting part can blast when bearing the acting force of a first preset value so that the exhaust passage is communicated with the outer end face and the inner end face.

The battery explosion-proof cover plate provided by the embodiment of the first aspect of the utility model has at least the following beneficial effects:

the explosion part integrated with the main body part of the pole is arranged on the pole, the explosion part directly plays an explosion-proof role, when the pole is mounted to the cover assembly to form the cover plate, the cover plate has an explosion-proof function, an explosion-proof valve does not need to be welded independently for explosion-proof, the process manufacturing cost is lower, the mounting flow of the explosion-proof valve is omitted in the processing process, the production efficiency is higher, the processing and material cost of the explosion-proof valve are omitted, and the cost of the whole cover plate is lower.

According to some embodiments of the utility model, the exhaust passage is provided with an outer end face, and the outer end face is provided with an air outlet, and the air outlet is provided with an air inlet and an air outlet.

According to some embodiments of the utility model, the elastic sealing member and the burst portion are spaced apart in the exhaust passage.

According to some embodiments of the utility model, the exhaust channel has an outer port, the outer port is located on one side of the outer end face, the outer port is provided with a reverse groove, the elastic sealing piece is provided with a ring table, and the ring table is attached to the inner peripheral wall of the reverse groove.

According to some embodiments of the utility model, the blasting portion has a first inner face on a side of the inner end face, and the main body portion has a second inner face on a side of the inner end face, the first inner face being flush with the second inner face.

According to some embodiments of the utility model, the blasting portion is provided with a thinned portion having a structural strength that is less than the structural strength of the other portion of the blasting portion.

According to some embodiments of the utility model, the thinned portion is a thinned score line that is a closed pattern or a non-closed line.

According to some embodiments of the utility model, the cover comprises:

the stop frame is provided with a first through hole;

the base plate is connected to the stop frame, a second through hole is formed in the base plate, and a press-fit position is formed in one surface, away from the stop frame, of the base plate;

the pressing block is connected to the press-fit position through an insulating pad and is provided with a third through hole;

wherein the first through hole, the second through hole, and the third through hole collectively form the mounting through hole.

According to some embodiments of the utility model, the main body portion includes a column portion, a first ring portion and a second ring portion respectively located at two ends of the column portion, the first ring portion and the second ring portion radially extend out of an outer peripheral surface of the column portion, the first ring portion is clamped to a surface of the pressing block, which is far away from the base plate, and the second ring portion is clamped to a surface of the stopping frame, which is far away from the base plate, so as to be abutted and fixed with the stopping frame, the base plate and the pressing block, and a sealing piece is arranged between the second ring portion and the base plate or between the second ring portion and the stopping frame, and surrounds the column portion to seal the mounting through hole.

According to some embodiments of the utility model, the first through hole has a larger cross section than the second through hole, and the seal is located within the first through hole and between the second ring and the base plate to seal the second through hole.

A battery according to an embodiment of the second aspect of the present utility model includes:

a battery cell is arranged in the shell, and a cover part is arranged in the shell;

the battery explosion-proof cover plate of the embodiment of the first aspect of the utility model is arranged on the cover part;

the battery explosion-proof cover plate is characterized by comprising a first current collecting disc, wherein the first current collecting disc is electrically connected with the battery core and the battery explosion-proof cover plate, the first current collecting disc is provided with a first connecting part and a second connecting part, the first connecting part is electrically connected with the main body part, the second connecting part is electrically connected with the battery core, the first connecting part is provided with a first avoiding part, the first avoiding part is avoided in the explosion part, the second connecting part is provided with a second avoiding part, and the second avoiding part is avoided in the explosion part.

The battery according to the embodiment of the second aspect of the present utility model has at least the following advantageous effects: through the optimization to the explosion-proof structure of battery explosion-proof apron for the cost of battery explosion-proof apron is lower, and then has reduced the holistic cost of battery.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The utility model is further described with reference to the accompanying drawings and examples, in which:

fig. 1 is a schematic cross-sectional view of a battery explosion-proof cover plate according to an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view of a post of a battery explosion-proof cover plate according to one embodiment of the present utility model;

fig. 3 is an exploded view of a battery explosion-proof cover plate according to an embodiment of the present utility model;

fig. 4 is an exploded view of a battery according to an embodiment of the present utility model.

Reference numerals:

a battery explosion-proof cover 1000;

a cover body 100; an outer end face 110; an inner end face 120; a mounting through hole 130; a stopper frame 140; a base plate 150; a briquette 160; an insulating pad 170; a seal 180;

a pole 200; a main body portion 210; an exhaust passage 211; an outer port 2111; a second inner face 212; a second outer face 213; a first ring portion 214; a second ring portion 215; a blasting section 220; a first inner face 221; a first outer face 222;

an elastomeric seal 300; a ring 310;

a housing 2000; a battery 2100;

a first collecting tray 3000; a first connection 3100; a first avoidance portion 3110; a second connecting portion 3200; the second avoidance portion 3210.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the direction or positional relationship indicated with respect to the description of the orientation, such as up, down, etc., is based on the direction or positional relationship shown in the drawings, is merely for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a plurality means one and more, and a plurality means two and more. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1 to 4, a battery explosion-proof cover 1000 according to an embodiment of the present utility model includes: the battery cover comprises a cover body 100 and a pole 200, wherein the cover body 100 is used for being connected with the battery shell 2000 in a sealing way or in a sealing way and in an insulating way, the cover body 100 is provided with an outer end face 110 and an inner end face 120 which are opposite to each other, the outer end face 110 is one face of the cover body 100, which is covered and positioned on the whole outer surface of the battery, the inner end face 120 is one face of the cover body 100, which is covered and positioned on the whole inner surface of the battery, and the cover body 100 is provided with a mounting through hole 130 which is communicated with the outer end face 110 and the inner end face 120; the post 200 is used for electrically connecting the battery core 2100 and the cover body 100 in the battery housing 2000, the post 200 includes a main body portion 210 and a bursting portion 220, the main body portion 210 is penetrated through the installation through hole 130, an exhaust channel 211 is provided in the main body portion 210, the bursting portion 220 is connected with the main body portion 210 into an integral structure and cuts off the exhaust channel 211, wherein the bursting portion 220 can burst when bearing the acting force of a first preset value so that the exhaust channel 211 is communicated with the outer end face 110 and the inner end face 120, and when the acting force of the air pressure value in the battery is equal to or exceeds the first preset value, the bursting portion 220 bursts so that the exhaust channel 211 is communicated to release the air in the battery, thereby reducing the air pressure in the battery and preventing the explosion of the battery caused by the overlarge air pressure. The battery explosion-proof cover plate 1000 of the embodiment can improve the use safety of the battery, save the cost and improve the manufacturing efficiency.

In this embodiment, the cover 100 has a disc shape, two end surfaces of the disc form an outer end surface 110 and an inner end surface 120 respectively, the disc-shaped edge of the cover 100 is used for being mounted on one end of the battery case 2000, and is fixedly and hermetically connected with the battery case 2000, and a mounting through hole 130 is provided at the central axis position of the cover 100. It should be understood that the mounting through-hole 130 may be provided at a position other than the central axis of the cover body 100.

The post 200 includes main part 210 and blasting portion 220, the axis position of main part 210 is equipped with exhaust passage 211, the cross-section of exhaust passage 211 is circular, form cylindric exhaust passage 211 along its axis direction, blasting portion 220 level sets up in exhaust passage 211, blasting portion 220 is cylindric along exhaust passage 211 axis direction too, the structural strength of blasting portion 220 is less than the structural strength of main part 210, blasting portion 220 only can bear the effort of first default, make when the inside atmospheric pressure value of battery equals or exceeds first default, blasting portion 220 breakage forms the pressure release mouth, the inside gas of battery is washed out along exhaust passage 211, play the explosion-proof effect. It should be understood that the cross section of the exhaust passage 211 may be rectangular, polygonal or elliptical, and the blasted portion 220 may be disposed in the exhaust passage 211 in an inclined manner, and the blasted portion 220 may have a shape corresponding to the cross section of the exhaust passage 211.

It is appreciated that the explosion part 220 integrated with the main body 210 of the pole 200 is arranged on the pole 200, the explosion part 220 directly plays an explosion-proof role, when the pole 200 is mounted on the cover body 100 to form a cover plate, the cover plate has an explosion-proof function, and an explosion-proof valve does not need to be welded separately for explosion-proof, so that the process manufacturing cost is lower, the mounting flow of the explosion-proof valve is omitted in the processing process, the production efficiency is higher, the processing and material cost of the explosion-proof valve are omitted, and the overall cost of the cover plate is lower.

Referring to fig. 1, fig. 2, and fig. 3, in some embodiments of the present utility model, the present utility model further includes an elastic sealing member 300, at least a portion of the elastic sealing member 300 is sealed in the exhaust channel 211, and is located on a side of the outer end surface 110 with respect to the blasting portion 220, where the elastic sealing member 300 can be separated from the exhaust channel 211 when receiving a force of a second preset value, and the second preset value is smaller than the first preset value.

It should be appreciated that the elastic sealing member 300 is inserted into the exhaust channel 211 from the side of the outer end face 110, and the blocking explosion part 220 is axially located at the side of the outer end face 110 along the installation through hole 130, so that after the battery is assembled, the elastic sealing member 300 protects the explosion part 220 from the external environment, the explosion part 220 is isolated from the external environment and is not influenced by external moisture, pollutants and corrosive liquid, the explosion part 220 is more reliable in the long-term use process, and the long-term use safety of the battery is further improved; and, because the elastic sealing member 300 can bear the acting force of the second preset value, and the second preset value is smaller than the first preset value, when the internal air pressure value of the battery is equal to or exceeds the first preset value, the elastic sealing member 300 and the explosion-proof part 220 are flushed away together, the elastic sealing member 300 does not influence the explosion-proof function of the explosion-proof part 220, and after the elastic sealing member 300 is installed, the explosion-proof part 220 and the elastic sealing member 300 together play an explosion-proof role, so that the battery is safe and reliable to use.

Referring to fig. 1, in some embodiments of the present utility model, the elastic sealing member 300 and the explosion portion 220 are spaced apart from each other in the air discharge channel 211.

It is appreciated that when the elastic sealing member 300 receives the pressure applied by the outside of the battery, the elastic sealing member 300 is easy to elastically deform, and the buffer is formed by the interval distance between the elastic sealing member 300 and the bursting part 220, so that the pressure applied by the outside of the battery is prevented from being directly transmitted to the bursting part 220 by the elastic sealing member 300, the bursting part 220 is prevented from being failed due to the pressure applied by the outside of the battery, the elastic sealing member 300 moves to be abutted against the bursting part 220 under the action of the pressure applied by the outside of the battery, and even when the bursting part 220 fails, whether the bursting part 220 of the battery has failure risk can be judged through the position change of the elastic sealing member 300, and whether the bursting part 220 is influenced by the pressure outside the battery can be visually displayed by the elastic sealing member 300, so that the failure risk of the battery is more visual. In this embodiment, the elastic sealing member 300 is a rubber plug, and the rubber plug can be directly plugged into the exhaust channel 211, and after the rubber plug is plugged into the rubber plug, the non-plugged end face of the rubber plug is flush with the plugged end face of the exhaust channel 211 of the main body 210, when the rubber plug is affected by the external pressure of the battery, the rubber plug will be pushed into a deeper part of the exhaust channel 211, so that the non-plugged end face of the rubber plug penetrates into the exhaust channel 211, and the influence of the external pressure of the battery can be judged.

Referring to fig. 1 and 2, in some embodiments of the present utility model, the exhaust channel 211 has an outer port 2111, the outer port 2111 is located on the side of the outer end surface 110, the outer port 2111 is provided with a reverse groove, and the elastic sealing member 300 is provided with a ring 310, and the ring 310 is attached to the inner peripheral wall of the reverse groove.

It should be appreciated that, when the elastic sealing member 300 is pressed against the outer port 2111 of the exhaust channel 211 by the annular table 310, and is not easy to penetrate into the exhaust channel 211, and the elastic sealing member 300 can bear larger external pressure of the battery without contacting the explosion part 220, so that the explosion part 220 is prevented from being affected by the excessive external pressure of the battery.

Referring to fig. 2, in some embodiments of the present utility model, the blasting portion 220 has a first inner surface 221, the first inner surface 221 is located on the side of the inner end surface 120, the main body portion 210 has a second inner surface 212 along the axial direction of the mounting hole 130, the second inner surface 212 is located on the side of the inner end surface 120, and the first inner surface 221 is flush with the second inner surface 212.

In this embodiment, the blasting portion 220 has a first inner face 221 and a first outer face 222 facing away from each other in the axial direction of the mounting through hole 130, the first inner face 221 is located on the side of the inner end face 120, the first outer face 222 is located on the side of the outer end face 110, the main body portion 210 has a second inner face 212 and a second outer face 213 facing away from each other in the axial direction of the mounting through hole 130, the second inner face 212 is located on the side of the inner end face 120, and the second outer face 213 is located on the side of the outer end face 110.

It should be appreciated that during machining, the exhaust passage 211 of the main body 210 may be directly machined, specifically, the second outer surface 213 is drilled along the direction from the second outer surface 213 of the main body 210 toward the second inner surface 212, the drilled hole is the exhaust passage 211, and when the drilled hole reaches the position of the second outer surface 213 of the blasting portion 220 at the preset depth, the machining of the exhaust passage 211 and the integrated machining of the blasting portion 220 and the main body 210 are completed, and the blasting portion 220 and the exhaust passage 211 are directly formed by one-step machining, so that the machining is more convenient. It should be appreciated that the pole 200 may also be directly molded by casting, 3D printing, etc.

Referring to fig. 1 and 2, in some embodiments of the present utility model, the blasting portion 220 is provided with a thinned portion having a structural strength smaller than that of other portions of the blasting portion 220.

It should be appreciated that the force that the blasting portion 220 can bear is controlled by the thinning portion to be near the first preset value, so as to meet the use requirement, and the structural strength of the thinning portion is smaller than that of other parts of the blasting, and when the internal air pressure value of the battery borne by the blasting portion 220 is equal to or exceeds the first preset value, the thinning portion breaks the other parts of the blasting.

Specifically, the thinning part is a thinning score line, the thinning score line is a closed graph or a non-closed line, and the thinning score line can be a closed or non-closed circular ring, a polygon, a fold line, a curve and a fold line. The thinned score line may be disposed at the first inner surface 221 of the blasting portion 220, where the first inner surface 221 is flush with the second inner surface 212 of the main body 210, so that the thinned score line is more convenient to process.

As another implementation manner, the blasting portion 220 may be integrally thinned, and the thickness of the blasting portion 220 is controlled so that the blasting portion 220 can only bear the acting force of the first preset pressure value.

Referring to fig. 3, in some embodiments of the present utility model, the cover body 100 includes:

a stopper frame 140 provided with a first through hole;

the base plate 150 is connected to the stop frame 140, the base plate 150 is provided with a second through hole, and one surface of the base plate 150, which is far away from the stop frame 140, is provided with a press-fit position;

the pressing block 160, the pressing block 160 is connected to the press-fitting position through the insulating pad 170, and the pressing block 160 is provided with a third through hole;

wherein the first through hole, the second through hole, and the third through hole collectively form a mounting through hole 130.

It should be appreciated that, through the connection of the stop frame 140 and the base plate 150 in a rotation limiting manner, after the base plate 150 is mounted on the stop frame 140, the base plate 150 is not rotated towards the stop frame 140, the base plate 150 is more stable, after the pole 200 is mounted on the mounting through hole 130, the pole 200 presses the stop frame 140, the base plate 150 and the pressing block 160, so that the three are pressed and fixed, wherein the pressing block 160 can uniformly press the pole 200 onto the base plate 150, so that defects such as cracks are avoided from being generated due to the fact that the base plate 150 is partially pressed too much, and the processing difficulty is reduced.

Referring to fig. 1, 2 and 3, in some embodiments of the present utility model, the main body 210 includes a column portion, a first ring portion 214 and a second ring portion 215 respectively located at two ends of the column portion, the first ring portion 214 and the second ring portion 215 radially extend out of an outer peripheral surface of the column portion, the first ring portion 214 is clamped to a surface of the pressing block 160 away from the base plate 150, the second ring portion 215 is clamped to a surface of the stopping frame 140 away from the base plate 150 so as to abut against and fix the stopping frame 140, the base plate 150 and the pressing block 160, a sealing member 180 is disposed between the second ring portion 215 and the base plate 150 or between the second ring portion 215 and the stopping frame 140, and the sealing member 180 surrounds the column portion to seal the mounting through hole 130.

It should be appreciated that the body part 210 presses the pressing block 160 through the first ring part 214 and the second ring part 215, and the second ring part 215 presses the base plate 150 such that the stopper frame 140, the base plate 150 and the pressing block 160 are pressed and fixed, and the mounting through-hole 130 is sealed by the sealing member 180 such that the inside of the battery is in a sealed state after the cap plate is mounted to the battery case 2000 and the battery is formed. Specifically, the second ring portion 215 of the main body 210 is formed in advance, the first ring portion 214 of the main body 210 is formed by riveting, the first ring portion 214 of the main body 210 is inserted into the mounting through hole 130 along the direction from the stop frame 140 to the pressing block 160 before being not riveted, and after the insertion, the first ring portion 214 of the main body 210 is formed by riveting, so that the first ring portion 214 is clamped on the pressing block 160, and the stop frame 140, the base plate 150 and the pressing block 160 are pressed and fixed together with the second ring portion 215. The pressing block 160 can uniformly rivet the pressure applied by the joint, so that the base plate 150 is prevented from being damaged due to overlarge partial pressure, and the processing is more convenient.

Referring to fig. 1, in some embodiments of the utility model, the cross-section of the first through-hole is larger than the cross-section of the second through-hole, and a seal 180 is positioned within the first through-hole and between the second ring portion 215 and the base plate 150 to seal the second through-hole.

It should be appreciated that the sealing member 180 is directly disposed between the second ring portion 215 and the base plate 150, so as to avoid the occurrence of poor sealing caused by a gap between the base plate 150 and the stopper, and thus, the sealing performance of the cover plate is better.

Referring to fig. 4, in some embodiments of the present utility model, a battery according to an embodiment of the second aspect of the present utility model includes:

a housing 2000 having a battery 2100 inside, the housing 2000 having a lid;

the battery explosion-proof cover plate 1000 according to the embodiment of the first aspect of the present utility model is mounted on the covering portion;

the first current collecting plate 3000 is electrically connected with the battery core 2100 and the battery explosion-proof cover plate 1000, the first current collecting plate 3000 is provided with a first connecting portion 3100 and a second connecting portion 3200, the first connecting portion 3100 is electrically connected with the main body portion 210, the second connecting portion 3200 is electrically connected with the battery core 2100, the first connecting portion 3100 is provided with a first avoiding portion 3110, the first avoiding portion 3110 is avoided in the explosion portion 220, the second connecting portion 3200 is provided with a second avoiding portion 3210, and the second avoiding portion 3210 is avoided in the explosion portion 220.

It is to be appreciated that the first avoidance portion 3110 and the second avoidance portion 3210 are avoided at the blasting portion 220, when the blasting portion 220 is blasted, the exhaust channel 211, the first avoidance portion 3110 and the second avoidance portion 3210 form a gas channel without shielding, the pressure release speed of the battery is faster, and the explosion-proof effect is better. Specifically, the first relief portion 3110 and the second relief portion 3210 are circular through holes, and it should be understood that the first relief portion 3110 and the second relief portion 3210 may be rectangular or other polygonal through holes. And, through the optimization to the explosion-proof structure of battery explosion-proof apron 1000 for the cost of battery explosion-proof apron 1000 is lower, and then has reduced the holistic cost of battery.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims (10)

1. A battery explosion-proof cover plate, comprising:

the cover body is provided with an outer end face and an inner end face which are opposite to each other, and is provided with a mounting through hole communicated with the outer end face and the inner end face;

the post comprises a main body part and a blasting part, wherein the main body part is connected to the installation through hole, an exhaust passage is arranged in the main body part, the blasting part is connected with the main body part into an integrated structure and cuts off the exhaust passage, and the blasting part can blast when bearing the acting force of a first preset value so that the exhaust passage is communicated with the outer end face and the inner end face.

2. The battery explosion-proof cover plate according to claim 1, wherein: the elastic sealing piece is at least partially plugged in the exhaust channel and is positioned on one side of the outer end face, the elastic sealing piece can be separated from the exhaust channel when bearing the acting force of a second preset value, and the second preset value is smaller than the first preset value.

3. The battery explosion-proof cover plate according to claim 2, wherein: the elastic sealing piece and the blasting part are arranged in the exhaust channel at intervals.

4. The battery explosion-proof cover plate according to claim 2, wherein: the exhaust channel is provided with an outer port, the outer port is positioned on one side of the outer end face, the outer port is provided with a reverse groove, the elastic sealing piece is provided with a ring table, and the ring table is attached to the inner peripheral wall of the reverse groove.

5. The battery explosion-proof cover plate according to claim 1, wherein: the explosion part is provided with a first inner face, the first inner face is positioned at one side where the inner end face is positioned, the main body part is provided with a second inner face, the second inner face is positioned at one side where the inner end face is positioned, and the first inner face and the second inner face are flush.

6. The battery explosion-proof cover plate according to claim 1, wherein: the blasting portion is provided with a thinning portion, and the structural strength of the thinning portion is smaller than that of other portions of the blasting portion.

7. The battery explosion-proof cover plate according to claim 1, wherein the lid body comprises:

the stop frame is provided with a first through hole;

the base plate is connected to the stop frame, a second through hole is formed in the base plate, and a press-fit position is formed in one surface, away from the stop frame, of the base plate;

the pressing block is connected to the press-fit position through an insulating pad and is provided with a third through hole;

wherein the first through hole, the second through hole, and the third through hole collectively form the mounting through hole.

8. The battery explosion-proof cover plate according to claim 7, wherein: the main part includes the post portion, is located respectively first ring portion and the second ring portion at post portion both ends, first ring portion the second ring portion all radially stretch out in the outer peripheral face of post portion, first ring portion joint in the briquetting is kept away from the one side of base plate, second ring portion joint in the locking frame is kept away from the one side of base plate to the butt is fixed locking frame the base plate with the briquetting, second ring portion with be equipped with the sealing member between the base plate or between second ring portion and the locking frame, the sealing member encircle in post portion, in order to seal the installation through-hole.

9. The battery explosion-proof cover plate according to claim 8, wherein: the cross section of the first through hole is larger than that of the second through hole, and the sealing piece is located in the first through hole and located between the second ring part and the base plate so as to seal the second through hole.

10. A battery, comprising:

a battery cell is arranged in the shell, and a cover part is arranged in the shell;

the battery explosion-proof cover plate according to any one of claims 1 to 9, mounted to the lid portion;

the battery explosion-proof cover plate is characterized by comprising a first current collecting disc, wherein the first current collecting disc is electrically connected with the battery core and the battery explosion-proof cover plate, the first current collecting disc is provided with a first connecting part and a second connecting part, the first connecting part is electrically connected with the main body part, the second connecting part is electrically connected with the battery core, the first connecting part is provided with a first avoiding part, the first avoiding part is avoided in the explosion part, the second connecting part is provided with a second avoiding part, and the second avoiding part is avoided in the explosion part.