CN217823152U - Battery and electric equipment - Google Patents

Abstract

The utility model discloses a battery and consumer, the battery includes: a housing, the housing comprising: the end plate is arranged at the end part of the shell; the battery cell is arranged in the shell; the explosion-proof valve is arranged on the end plate; the buffer piece is arranged in the shell and located between the battery cell and the end plate, a through hole is formed in the buffer piece, a plurality of buffering portions protruding into the through hole are arranged in the through hole, the buffering portions are arranged opposite to the explosion-proof valve, and a first gap is formed between every two adjacent buffering portions. Wherein, install the bolster additional on the explosion-proof valve of battery, can effectually avoid electric core at the vibration in-process, electrolyte rocks the impulse striking explosion-proof valve that brings and makes it open the valve and lead to the danger that the weeping is on fire to can cooperate with the design pressure of explosion-proof valve, effectively promote the timely pressure release function of explosion-proof valve, still can not influence normal gas pressure simultaneously and cause explosion-proof valve to open the valve.

Description

Battery and electric equipment

Technical Field

The utility model belongs to the technical field of the battery technique and specifically relates to a battery and consumer are related to.

Background

With the development of modern society and the enhancement of environmental awareness of people, more and more devices select rechargeable secondary batteries as power sources, such as mobile phones, notebook computers, electric tools, electric vehicles, energy storage power stations and the like, which provides a wide space for the application and development of batteries, and therefore, the use safety of the batteries needs to be improved.

Among the correlation technique, for the security of guaranteeing the battery, generally install explosion-proof valve on battery top cap, when the battery appeared vibration or when falling the scheduling accident, explosion-proof valve in order to reach the purpose of pressure release can be broken away to a large amount of gases that the battery produced. In fact, the pressure-resistant design of the explosion-proof valve has certain problems, or the design pressure of the explosion-proof valve is low, the air pressure does not reach the valve opening pressure in the vibration process, electrolyte shaking impulse impacts the explosion-proof valve due to the vibration of the battery cell, and the danger of liquid leakage and fire ignition of the opening valve of the explosion-proof valve is caused; or the design pressure of the explosion-proof valve is higher, and the battery cannot be protected.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a battery through install the bolster additional on explosion-proof valve, can guarantee that explosion-proof valve can in time release to can also avoid electric core vibration to lead to the risk that battery weeping was on fire.

The utility model also provides an electric equipment.

According to the utility model discloses battery of first aspect embodiment, the battery includes: a housing, the housing comprising: the end plate is arranged at the end part of the shell; a cell disposed within the housing; the explosion-proof valve is arranged on the end plate; the buffer piece, the buffer piece set up in the shell and be located electric core with between the end plate, be provided with the through-hole on the buffer piece and be in be provided with a plurality of orientations in the through-hole protruding buffering portion in the through-hole, it is a plurality of the buffering portion with the explosion-proof valve sets up relatively, and is adjacent be provided with first clearance between the buffering portion.

According to the utility model discloses battery through install the bolster additional on the explosion-proof valve of battery, can effectually avoid electric core in vibration process, the impulse striking explosion-proof valve that electrolyte rocked and brought makes it open the valve and lead to the danger that the weeping was on fire to can cooperate with the design pressure of explosion-proof valve, effectively promote the timely pressure release function of explosion-proof valve, still can not influence normal gas pressure simultaneously and cause explosion-proof valve to open the valve. And, set up a plurality of buffering portions on the bolster, can improve the atress cushioning effect greatly to effectively guarantee the circulation effect of exhausting, thereby the security of fine improvement electricity core and battery.

From this, install the bolster additional on explosion-proof valve, striking explosion-proof valve leads explosion-proof valve to open the valve in advance when can prevent electrolyte or electric core vibration, has guaranteed explosion-proof valve's normal ability of opening the valve simultaneously, has ensured the normal use of battery.

According to some embodiments of the invention, the first gap is one of triangular, fan-shaped and rectangular.

According to some embodiments of the utility model, it is a plurality of buffer is corresponding the position at through-hole center is provided with the second clearance, the second clearance with first clearance is linked together.

According to some embodiments of the present invention, the plurality of the buffer portions are at least three and are spaced apart from each other in the circumferential direction of the through hole.

According to some embodiments of the invention, the buffer comprises: the ring body set up in the edge of plate body, the through-hole set up in the plate body.

According to some embodiments of the invention, at least one of the first gaps extends to the ring body.

According to some embodiments of the present invention, the buffer portion faces a side surface of the explosion-proof valve lower than a side surface of the plate body faces a side surface of the end plate to form the avoiding groove.

According to some embodiments of the present invention, the diameter of the dodging groove is Φ, Φ satisfies the relation: phi is more than or equal to 12mm and less than or equal to 20mm.

According to the utility model discloses a some embodiments, the plate body deviates from a side surface of end plate is provided with a plurality of strengthening ribs, and is a plurality of strengthening rib interval distribution and/or crisscross distribution.

According to the utility model discloses consumer of second aspect embodiment, including the battery of above-mentioned embodiment.

Additional aspects and advantages of the invention 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 invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a buffer member, an explosion-proof valve and an end plate according to an embodiment of the present invention;

fig. 2 is a schematic partial cross-sectional view of a buffer, an explosion-proof valve and an end plate according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an explosion-proof valve according to an embodiment of the present invention.

Reference numerals:

an end plate 10;

an explosion-proof valve 20;

a buffer member 30; a through hole 31; a buffer part 32; the first gap 33; a second gap 34; a ring body 35; a plate body 36; an avoidance groove 37; and a reinforcing rib 38.

Detailed Description

Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary.

A battery according to an embodiment of the first aspect of the present invention is described below with reference to fig. 1 to 3, the battery including: the shell, the battery cell, the explosion-proof valve 20 and the buffer piece 30.

Wherein, the shell includes: a housing and an end plate 10, the end plate 10 being provided at an end of the housing; the battery cell is arranged in the shell. That is to say, the shell comprises casing and end plate 10 two parts, so set up, and the parcel electric core that can be fine avoids electric core to contact external dust and water smoke. In addition, end plate 10 and casing can be integrated into one piece, so set up, can simplify technology, practices thrift the cost to improve battery case's wholeness, perhaps, end plate 10 and casing also can be for the components of a whole that can function independently structure, fixed connection carries out again, so, through the fixed connection of end plate 10 and casing, be favorable to improving the intensity and the rigidity of shell, further extension battery case's life.

The explosion-proof valve 20 is provided in the end plate 10. That is, the explosion-proof valve 20 is provided at the end plate 10, and the gas inside the housing can be well discharged through the explosion-proof valve 20. In addition, as shown in fig. 2, the explosion-proof valve 20 is installed at the position of the eccentric through hole 31 of the end plate 10, so that not only can the pole column at the center of the end plate 10 be avoided, but also the space outside the end plate 10 can be reduced, the explosion-proof valve 20 is effectively protected from being damaged and corroded by the outside, the normal function of the explosion-proof valve 20 is ensured, and the safety performance of battery explosion-proof pressure relief is well ensured and improved.

As shown in fig. 2, the buffer 30 is disposed within the case and between the cell and the end plate 10. By arranging the buffer member 30 between the end plate 10 and the battery core, on one hand, the buffer member 30 and the explosion-proof valve 20 can be matched, so that the normal pressure relief of the explosion-proof valve 20 can be effectively ensured, and the phenomenon that the battery cannot be safely protected due to the over-small or over-large pressure-resistant design of the explosion-proof valve 20 can be avoided; on the other hand, can effectually avoid electric core in the vibration process, the momentum that electrolyte rocked to bring strikes explosion-proof valve 20 and makes it open the valve and leads to the weeping danger on fire, has guaranteed the normal use of battery.

Wherein, bolster 30 can be for lower plastic, and lower plastic can play insulating effect between electric core and end plate 10, avoids electric core or utmost point ear etc. and end plate 10 metal direct contact to cause safety risks such as short circuit.

As shown in fig. 2 and 3, the cushion member 30 is provided with a through hole 31, and a plurality of cushion portions 32 protruding inward of the through hole 31 are provided in the through hole 31, the plurality of cushion portions 32 are provided opposite to the explosion-proof valve 20, and a first gap 33 is provided between the adjacent cushion portions 32. That is to say, set up through-hole 31 on bolster 30, set up a plurality of buffers 32 on through-hole 31 to be equipped with a plurality of convex buffers 32 on the direction towards in the through-hole 31, so set up, can make a plurality of buffers 32 towards in the through-hole 31 and electric core contact, when electric core vibration and atmospheric pressure have not reached the valve opening pressure yet, a plurality of buffers 32 can effectual prevention electrolyte rock and strike explosion-proof valve 20 and make it open the valve, thereby avoid the danger that battery weeping catches fire, promptly can not open the valve by mistake when normal use. Specifically, when the air pressure in the housing reaches the threshold value, the explosion-proof valve 20 is normally exploded, and the air in the housing pushes the buffer 30 to open, so that normal pressure relief can be realized.

The plurality of buffer portions 32 are provided to face the explosion-proof valve 20, and a first gap 33 is provided between the adjacent buffer portions 32. That is to say, a plurality of buffers 32 are relative installation with explosion-proof valve 20, and it is corresponding with explosion-proof valve 20 to be equipped with first clearance 33 between the adjacent buffer 32, so set up, can play certain buffering guard action to the less or great explosion-proof valve 20 of design pressure on the one hand, still can not influence normal gas pressure simultaneously and cause explosion-proof valve 20 to open the valve, the effectual normal pressure release function who guarantees explosion-proof valve 20, on the other hand, can make behind the fine burst buffer 32 of gas, arrange the pressure circulation through explosion-proof valve 20, the effectual normal use who guarantees explosion-proof valve 20.

From this, through set up a plurality of buffers 32 on installing bolster 30 and buffers 32 additional on the explosion-proof valve 20 of battery, not only can effectually avoid electric core in vibration process, the impulse that electrolyte rocks and brings strikes explosion-proof valve 20 and makes it open the valve and lead to the danger that the weeping is on fire, can also cooperate with explosion-proof valve 20's design pressure, effectively guarantee explosion-proof valve 20's timely pressure release function, still can not influence normal gas pressure simultaneously and cause explosion-proof valve 20 to open the valve. In addition, a plurality of buffer parts 32 can also improve the atress cushioning effect greatly, the effectual circulation effect of guaranteeing to exhaust to fine improvement electric core to the security of battery.

Wherein the first gap 33 may have one of a triangular shape, a fan shape, and a rectangular shape. Specifically, referring to fig. 3, the first gap 33 may be triangular, and thus, the opening of the buffer 30 may be reduced, so that on one hand, the flexibility of the buffer 30 may be increased, and the blasting capability may be improved, thereby effectively ensuring that the explosion-proof valve 20 can normally relieve pressure; on the other hand, the structure of the buffer member 30 can be simplified, the processing technology can be simplified, and the cost can be saved. In addition, the first gap 33 may also be a fan shape or a rectangular shape, and both the fan shape and the rectangular shape may facilitate the pressure relief of the battery and the processing of the buffer 30.

Of course, the shape of the first gap 33 is not limited to triangle, fan and rectangle, but may be other shapes, such as net or saw-tooth, so that the normal pressure relief of the battery can be realized when any gap is opened.

As shown in fig. 3, the plurality of buffer portions 32 are provided with second gaps 34 at positions corresponding to the centers of the through holes 31, and the second gaps 34 communicate with the first gaps 33. That is, the plurality of buffer parts 32 are formed with the second gap 34 at a position facing the center of the through hole 31, and the second gap 34 is communicated with the first gap 33, so that the flexibility of the buffer 30 can be increased, and when a large air pressure is generated inside the battery, the buffer parts 32 and the explosion-proof valve 20 can be rapidly burst by the air, thereby performing effective pressure release circulation. If the buffering parts 32 are connected at the position facing the center of the through hole 31, the buffering parts 32 are broken by gas to cause a certain blocking effect, so that the explosion-proof valve 20 cannot be timely decompressed, therefore, the buffering parts 32 are provided with the second gap 34 at the center of the through hole 31, the explosion capacity of the buffering part 30 is effectively improved, and the use safety of the battery is ensured.

Also, the plurality of buffer portions 32 may be at least three and distributed at intervals in the circumferential direction of the through-hole 31. That is to say, the quantity of buffer portion 32 needs to set up three or more to going up interval distribution in the circumference of through-hole 31, so setting up, can forming a plurality of buffer portions 32 and a plurality of first clearance 33, not only can effectively strengthen the blasting ability of bolster 30, the explosion-proof pressure release function of explosion-proof valve 20 of assurance that can also be effectual makes it can not bring the danger of battery explosion because of design pressure is too big or the undersize, thereby the security performance of assurance battery that can be fine. If only set up two buffer parts 32, though the structure is simpler, nevertheless reduced the protective capacities of bolster 30 to electric core inside to a certain extent, when probably leading to atmospheric pressure to reach the valve opening pressure, although explosion-proof valve 20 in time opens the valve, the problem that the gas in the battery can't in time discharge. As shown in fig. 1 and 3, the number of the buffer portions 32 may be four, and the four buffer portions 32 are arranged at regular intervals in the circumferential direction of the through-hole 31.

Wherein, the buffer member 30 includes: the ring body 35 and the plate body 36, the ring body 35 is disposed on the edge of the plate body 36, and the through hole 31 is disposed on the plate body 36. That is to say, the bolster 30 comprises ring body 35 and plate body 36 two parts, and plate body 36 sets up the inboard at ring body 35, so set up, can make the fine and end plate 10 of bolster 30 assemble, improved the installation steadiness between the two. And, set up through-hole 31 on plate 36, for setting up a plurality of buffers 32 and provide certain space, can effectual realization buffers 32 normal use.

Furthermore, the at least one first gap 33 extends to the ring body 35. That is, considering that the buffering member 30 is connected with the end plate 10 and the buffering portions 32 have unique structures, at least one of the first gaps 33 of the adjacent buffering portions 32 needs to extend to one side of the ring body 35, so that the first gaps 33 can be distributed at intervals along the radial direction of the through hole 31, and a plurality of first gaps 33 are formed on the ring body 35, so that the flexibility of the buffering member 30 can be enhanced to improve the blasting capacity; on the other hand, the stress of the buffer part 32 can be uniform, and when the buffer part 32 is impacted by the air pressure, the first gap 33 located on the plate body 36 is not too large, and the first gap 33 is not formed on the ring body 35, so that the stress of the buffer part 32 is not uniform, the air pressure is not easy to break through the buffer part 32, and the normal pressure relief of the explosion-proof valve 20 is further influenced.

Referring to fig. 2, a side surface of the cushioning portion 32 facing the explosion-proof valve 20 is lower than a side surface of the plate body 36 facing the end plate 10 to form an escape groove 37. That is to say, the surface of the buffer part 32 facing the explosion-proof valve 20, that is, the surface of the buffer part 32 facing the outside of the through hole 31, is lower than the surface of the plate body 36 facing the end plate 10 to form the avoiding groove 37, and thus, in consideration of the structure of the explosion-proof valve 20, the avoiding groove 37 is formed, so that on one hand, the explosion-proof valve 20 does not directly contact with the buffer member 30, and the risk of liquid leakage due to accidental collision between the explosion-proof valve 20 and the buffer member 30 is avoided, on the other hand, a certain space is formed between the explosion-proof valve 20 and the buffer member 30, and after the buffer part 32 is broken by the gas, a certain impact force is gathered to strongly impact the explosion-proof valve 20, thereby realizing the pressure relief function of the explosion-proof valve 20 and effectively ensuring the safety of the battery.

In addition, the diameter of the avoiding groove 37 is Φ, which satisfies the relation: phi is more than or equal to 12mm and less than or equal to 20mm. The diameter of the avoiding groove 37 is required to be 12mm-20mm, so that the buffer member 30 and the explosion-proof valve 20 can be well matched and mounted, the strength requirement of the buffer member 30 is met, if the diameter of the avoiding groove 37 is smaller than 12mm, the explosion-proof valve 20 can not be well embedded in the avoiding groove 37, the stressed area of the explosion-proof valve 20 can be reduced, the impact force of gas on the explosion-proof valve 20 is further attenuated, and the normal use of the explosion-proof valve 20 is influenced; if the diameter of the avoiding groove 37 is greater than 20mm, the strength of the buffering member 30 may be affected to some extent, and the installation stability between the buffering member 30 and the end plate 10 may be affected.

And, a plurality of strengthening ribs 38 are arranged on the surface of the plate body 36 on the side away from the end plate 10, and the plurality of strengthening ribs 38 are distributed at intervals and/or in a staggered way. That is, the surface of the plate body 36 facing away from the end plate 10 is provided with a plurality of ribs 38, and the plurality of ribs 38 include a plurality of distribution manners, including an interval distribution manner, a staggered distribution manner, and a manner of coexistence of interval distribution and staggered distribution. So set up, through multiple distribution mode, can effectively strengthen the intensity and the rigidity of bolster 30. In addition, the reinforcing ribs 38 are arranged around the plurality of buffer parts 32, so that the buffer parts 32 can be effectively prevented from being easily exploded under the action of gas pressure, and a certain supporting and reinforcing effect is provided for the structure of the buffer parts 32.

According to the utility model discloses consumer of second aspect embodiment, including the battery of above-mentioned embodiment. Through install bolster 30 additional on the explosion-proof valve 20 at the battery, can effectually avoid electric core at the vibration in-process, electrolyte rocks the impulse that brings and strikes explosion-proof valve 20 and makes it open the valve and lead to the danger that the weeping is on fire to can cooperate with the design pressure of explosion-proof valve 20, effectively promote the timely pressure release function of explosion-proof valve 20, still can not influence normal gas pressure simultaneously and cause explosion-proof valve 20 to open the valve. Moreover, the buffering parts 32 are arranged on the buffering part 30, so that the buffering effect can be greatly improved, the exhaust circulation effect is effectively ensured, and the safety of the battery core and the battery is well improved.

In the description of the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A battery, comprising:

a housing, the housing comprising: the end plate is arranged at the end part of the shell;

a cell disposed within the housing;

the explosion-proof valve is arranged on the end plate;

the buffer piece, the buffer piece set up in the shell and be located electric core with between the end plate, be provided with the through-hole on the buffer piece and be in be provided with a plurality of orientations in the through-hole protruding buffering portion in the through-hole, it is a plurality of the buffering portion with the explosion-proof valve sets up relatively, and is adjacent be provided with first clearance between the buffering portion.

2. The battery of claim 1, wherein the first gap is one of triangular, fan-shaped, and rectangular.

3. The battery according to claim 1, wherein a second gap is provided at a position corresponding to the center of the through hole in the plurality of buffer portions, the second gap communicating with the first gap.

4. The battery of claim 1, wherein the plurality of buffer portions is at least three and is spaced apart in the circumferential direction of the through hole.

5. The battery of claim 1, wherein the buffer comprises: the ring body set up in the edge of plate body, the through-hole set up in the plate body.

6. The battery of claim 5, wherein at least one of the first gaps extends to the ring body.

7. The battery according to claim 5, wherein a side surface of the buffer portion facing the explosion-proof valve is lower than a side surface of the plate body facing the end plate to form an avoidance groove.

8. The battery of claim 7, wherein the avoidance slot has a diameter Φ, the Φ satisfying the relationship: phi is more than or equal to 12mm and less than or equal to 20mm.

9. The battery of claim 5, wherein a side surface of the plate body facing away from the end plate is provided with a plurality of reinforcing ribs, and the plurality of reinforcing ribs are distributed at intervals and/or staggered.

10. An electrical consumer, characterized in that it comprises a battery according to any one of claims 1-9.

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