CN219717162U - Explosion-proof valve, battery box, battery and power utilization device - Google Patents

Abstract

The utility model relates to the technical field of batteries, and provides an explosion-proof valve, a battery box, a battery and an electric device. Wherein, explosion-proof valve is used for installing on the case lid of battery box, includes: a valve body; a connecting part connected with one side of the valve body; the at least two elastic stop pieces are connected with the valve body through the connecting part, are arranged at intervals on the connecting part along the circumferential direction of the valve body and are used for abutting against one side of the box cover; each elastic stop piece is provided with at least two bending sections, and the projections of the at least two bending sections on the valve body are at least partially overlapped along the axial direction of the valve body. Through the technical scheme of the utility model, the structure of the explosion-proof valve can be simplified, the production cost of the product is reduced, the assembly efficiency of the product is improved, and the service life of the product is prolonged.

Description

Explosion-proof valve, battery box, battery and power utilization device

Technical Field

The utility model relates to the technical field of batteries, in particular to an explosion-proof valve, a battery box, a battery and an electric device.

Background

This section provides merely background information related to the present disclosure and is not necessarily prior art.

With the rapid development of new energy automobiles, more and more batteries are in the field of view of the public. The battery is the energy storage system of new energy automobile, in order to increase the security and the reliability that the battery used, the battery all has the battery case generally, and all is equipped with explosion-proof valve on the battery case generally to can the quick pressure release when the internal pressure of battery risees fast, prevent that the battery from exploding.

In the related art, the explosion-proof valve of the battery has a complex structure, more parts and components, higher production cost and complex assembly steps.

Disclosure of Invention

The utility model aims to provide an explosion-proof valve, a battery box, a battery and an electric device, which are used for simplifying the structure of the explosion-proof valve, reducing the production cost of a product and improving the assembly efficiency of the product. The aim is achieved by the following technical scheme:

in a first aspect, the present utility model provides an explosion-proof valve for mounting on a lid of a battery box, the explosion-proof valve comprising: a valve body; the connecting part is connected with one side of the valve body; the at least two elastic stop pieces are connected with the valve body through the connecting part, are arranged at intervals on the connecting part along the circumferential direction of the valve body and are used for being abutted with one side of the box cover, and the valve body is used for being connected with the other side of the box cover; each elastic stop piece is provided with at least two bending sections, and the projections of the at least two bending sections on the valve body are at least partially overlapped along the axial direction of the valve body.

According to the explosion-proof valve provided by the utility model, the explosion-proof valve is arranged on the case cover of the battery case, the case cover is also provided with the pressure relief hole, the explosion-proof valve is arranged on the case cover through the pressure relief hole, the valve body and the at least two elastic stop pieces are respectively positioned on two sides of the case cover, the at least two elastic stop pieces are used for being abutted against one side of the case cover, which is away from the valve body, and abutted against the edge of the pressure relief hole, so that the valve body is abutted against the other side of the case cover to play a role of sealing the pressure relief hole, and when the internal pressure of the battery case reaches a preset threshold value, the elastic stop pieces are elastically deformed under the action of the gas pressure to store elastic potential energy, so that a gas channel is formed between the valve body and the case cover, and gas in the case body can be discharged from the gas channel, so that the aim of quick pressure relief is fulfilled. When the pressure of the gas in the battery box is lower than a preset threshold value, the elastic stop piece releases elastic potential energy, and the valve body seals the pressure relief hole, so that the cycle is performed.

In addition, because each elastic stop piece is provided with at least two bending sections, and the projections of the at least two bending sections on the valve body are at least partially overlapped along the axial direction of the valve body, when the internal pressure of the battery box reaches a preset threshold value, the valve body can move towards the direction away from the box cover under the action of gas pressure, at the moment, the at least two bending sections of the elastic stop pieces can be compressed under the driving of the pulling force of the valve body and the reaction force of the box cover, so that the tensile stress born by the connection part of the elastic stop pieces and the connection part can be dispersed, and the occurrence of the condition that the connection part of the elastic stop pieces and the connection part breaks due to the sudden increase of the stress can be reduced, and the service life of the explosion-proof valve can be prolonged.

In addition, the explosion-proof valve provided by the utility model can also have the following additional technical characteristics:

in some embodiments of the utility model, the elastic stopper comprises a connecting section, an abutting section and at least two of the bending sections; one end of the connecting section is connected with one end of the connecting part far away from the valve body, at least two bending sections are connected between the connecting section and the abutting section, and the abutting section is used for being abutted with one side of the box cover.

When the internal pressure of the battery box reaches a preset threshold value, one end of the connecting section connected with the connecting part can receive larger tensile stress, and as at least two bending sections are connected between the connecting section and the abutting section, at least two bending sections generate acting forces opposite to the tensile stress received by one end of the connecting section between the abutting section and the box cover, at least two bending sections can be compressed and elastically deformed, so that the tensile stress received by one end of a part of connecting section connected with the connecting part is dispersed, and the condition that the connecting part of the connecting section connected with the connecting part is easy to break can be improved.

In some embodiments of the utility model, at least two of the bending sections include a first bending section configured to bend in a direction proximate to the axis of the connection portion and a second bending section connected to the first bending section configured to bend in a direction distal to the axis of the connection portion.

Through with first bending section and second bending section respectively along being close to and keeping away from the axis direction of connecting portion to can be when elastic stop piece atress, first bending section and second bending section can be compressed along the axis direction of connecting portion, and then can realize dispersing the tensile stress of connecting portion's junction.

In some embodiments of the utility model, one end of the connecting section is integrally connected with one end of the connecting portion remote from the valve body; and/or the connecting section, the abutting section and at least two bending sections are integrally connected.

Through keeping away from the one end an organic whole that links to each other of valve body with the connecting portion with the one end of linkage segment, then need not the assembly connecting piece between linkage segment and the connecting portion, help simplifying the structure of product to help simplifying the assembly process.

Similarly, the connecting section is integrally connected with the at least two bending sections and the abutting section, so that the elastic stop piece is convenient to process and manufacture, suitable for mass production, and capable of improving the situation that the connecting section is easy to break due to the fact that the connecting mode such as welding is adopted between the at least two bending sections or between the at least two bending sections and the abutting section is improved, and the service life of the elastic stop piece is prolonged.

In some embodiments of the present utility model, a limiting step is disposed on an outer peripheral side of the valve body, the limiting step is located on one side of the valve body facing the elastic stop member, a sealing ring is sleeved on the limiting step, and the valve body is in sealing connection with the other side of the case cover through the sealing ring.

Through set up the sealing washer on the spacing step of valve body to can improve the sealed effect to the pressure release hole, with reduce under the condition that the gas pressure in the battery box did not reach preset threshold value, lead to the exhaust risk of gas in the battery box because of the valve body is sealed not tight.

In some embodiments of the present utility model, a sealing bead is formed by partially protruding an inner peripheral side of the sealing ring, and the sealing bead is located at a side of the sealing ring close to the elastic stopper and is used for abutting between the valve body and the case cover.

The sealing convex rib is abutted between the valve body and the case cover, so that the assembly reliability of the sealing ring and the valve body can be improved, and the sealing effect on the pressure relief hole can be further improved.

In some embodiments of the utility model, a plug-in groove is arranged on one side of the valve body, which is away from the connecting part, and the plug-in groove is used for being plugged and matched with the dismounting piece.

Through setting up the jack-in groove in one side that the valve body deviates from connecting portion, then when the installation explosion-proof valve, utilize dismouting piece to peg graft mutually with the jack-in groove earlier, then rotate the explosion-proof valve through the dismouting piece to in order to install the explosion-proof valve in place, improved the efficiency of explosion-proof valve installation and dismantlement.

In some embodiments of the utility model, the outer contour of the valve body is circular, and the connecting portion is disposed coaxially with the valve body.

Through making connecting portion and valve body set up along same axis, product overall structure is comparatively regular, helps improving the aesthetic property of product, helps improving the atress homogeneity of two at least elastic stop piece again simultaneously.

In a second aspect, the present utility model provides a battery box comprising: a case having an opening; the box cover is covered on the opening and is provided with a pressure relief hole; and an explosion-proof valve according to any one of the first aspect, wherein the elastic stopper is mounted on one side of the case cover through the pressure relief hole, and the valve body is located on the other side of the case cover.

The battery box provided by the utility model has the technical effects of any one of the embodiments because the battery box comprises the explosion-proof valve according to the embodiment of the first aspect, and the description is omitted herein.

In some embodiments of the present utility model, at least two limiting protrusions are disposed on a side of the case cover facing the elastic stop member, and the at least two limiting protrusions are disposed on two opposite sides of the pressure release hole and located at edges of the pressure release hole, and are used for abutting against the elastic stop member.

When the explosion-proof valve is installed, at least two elastic stop pieces are abutted to one side of the box cover, which is away from the valve body, of the box cover through the pressure relief hole, then the valve body is driven to rotate by the dismounting piece, when the valve body rotates to a certain angle, the elastic stop pieces can be abutted to the limiting protrusions, and at the moment, the elastic stop pieces cannot continue to rotate under the limiting protrusion limiting stop action, so that the risk that the elastic stop pieces fall off from the pressure relief hole after rotating to the initial position again can be reduced, and the reliability and stability of the explosion-proof valve assembly are improved.

In some embodiments of the present utility model, at least one stopper is further disposed on a side of the case cover facing the elastic stopper, at least one stopper is located between two adjacent stopper protrusions, and a first guiding inclined plane is disposed on a side of the stopper facing away from the case cover; the elastic stop piece is provided with a second guide inclined plane towards one side of the box cover, and the first guide inclined plane is matched with the second guide inclined plane and is used for being in sliding fit with the second guide inclined plane.

In the process of being rotated, the second guide inclined plane on the elastic stop piece can be in sliding fit with the first guide inclined plane on the limiting block, so that the abutting section of the elastic stop piece passes over the limiting block and then is limited between the limiting boss and the limiting block, and the reliability and stability of the installation of the explosion-proof valve can be further improved.

In some embodiments of the present utility model, at least two limiting ribs are disposed at intervals on the peripheral side of the connection portion, and the at least two limiting ribs are disposed opposite to each other, and are used for abutting against the inner peripheral side of the pressure relief hole.

After the explosion-proof valve is installed in place, at least two limiting ribs which are arranged oppositely are utilized to be abutted against the inner peripheral side of the pressure relief hole, so that the problem that the explosion-proof valve is easy to shake relative to the box cover can be solved, and the installation stability of the explosion-proof valve is further improved.

In a third aspect, the utility model provides a battery comprising a battery compartment according to any of the embodiments of the second aspect, the battery compartment housing one or more battery cells.

The battery provided in the third aspect of the present utility model includes the battery case according to any one of the second aspect, and therefore has the technical effects of any one of the above embodiments, and will not be described in detail herein.

In a fourth aspect, the present utility model provides an electrical device comprising a battery according to an embodiment of the third aspect for powering the electrical device.

The power consumption device according to the fourth aspect of the present utility model includes the battery according to the third aspect, and therefore has the technical effects of any of the above embodiments, and will not be described in detail herein.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

FIG. 1 is a schematic view of an explosion valve according to some embodiments of the present utility model;

FIG. 2 is a schematic view of an explosion valve according to another embodiment of the present utility model;

FIG. 3 is a schematic cross-sectional view of the structure of FIG. 2 in the direction A-A;

FIG. 4 is a schematic view of a valve body and a seal ring before assembly according to some embodiments of the present utility model;

FIG. 5 is a schematic diagram illustrating an assembled valve body and seal ring according to some embodiments of the present utility model;

FIG. 6 is a schematic cross-sectional view of the structure in the direction B-B in FIG. 5;

FIG. 7 is a schematic view of an assembled explosion-proof valve and cover according to some embodiments of the present utility model;

FIG. 8 is a schematic perspective view of the lid of FIG. 7;

FIG. 9 is a schematic view of an explosion-proof valve and a cover according to some embodiments of the present utility model;

fig. 10 is a schematic view of an explosion-proof valve and a case cover according to another embodiment of the present utility model.

The reference numerals are as follows:

100. an explosion-proof valve; 200. a case cover;

10. a valve body; 20. a seal ring; 30. an elastic stopper; 40. limiting convex ribs;

11. a connection part; 12. a limit step; 13. a plug-in groove; 21. sealing the convex ribs; 31. a connection section; 32. a first bending section; 33. a second bending section; 34. an abutment section;

201. a pressure relief hole; 202. a limit protrusion; 203. a limiting block; 341. and a second guiding inclined plane.

Detailed Description

Embodiments of the technical scheme of the present utility model will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and thus are merely examples, and are not intended to limit the scope of the present utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model; the terms "comprising" and "having" and any variations thereof in the description of the utility model and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.

In the description of embodiments of the present utility model, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present utility model, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present utility model, the term "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the description of the embodiments of the present utility model, the term "plurality" means two or more (including two), and similarly, "plural sets" means two or more (including two), and "plural sheets" means two or more (including two).

In the description of the embodiments of the present utility model, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present utility model.

In the description of the embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.

Currently, the more widely the battery is used in view of the development of market situation. The battery is not only applied to energy storage power supply systems such as hydraulic power, firepower, wind power and solar power stations, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric automobiles and the like, and various fields such as aerospace and the like. With the continuous expansion of the battery application field, the market demand thereof is also continuously expanding.

The battery is used as an energy storage system of the new energy automobile, the battery is usually provided with a battery box for improving the use safety and reliability of the battery, and the battery box is usually provided with an explosion-proof valve so as to quickly relieve pressure when the internal pressure of the battery is quickly increased and prevent the battery from explosion.

In the related art, the explosion-proof valve of the battery has a complex structure, more parts and components, higher production cost and complex assembly steps.

In order to solve the problems that the explosion-proof valve is complex in structure, high in production cost and complex in assembly steps due to the fact that the parts are more in types, at least two elastic stop pieces are arranged on a connecting part formed by protruding one side of a valve body at intervals, the elastic stop pieces are abutted to one side of a box cover of a battery box, the valve body can seal a pressure relief hole in the box cover, and when the internal pressure of the battery box reaches a preset threshold value, the at least two elastic stop pieces are elastically deformed under the action of the gas pressure, so that gas can be discharged from a gas flow channel formed between the valve body and the pressure relief hole, the explosion-proof valve is simple in structure, convenient to install and detach, and beneficial to reducing the production cost of products.

The explosion-proof valve 100 disclosed by the embodiment of the utility model can be arranged on a box cover of a battery box, and can also be arranged on any box body which needs to be decompressed under the condition that the internal pressure reaches a preset threshold value.

The following examples are presented for convenience of explanation with an explosion-proof valve for mounting on a case cover of a battery case according to an embodiment of the present utility model.

Referring to fig. 1 to 3, fig. 1 is a schematic structural diagram of an explosion-proof valve according to one view angle according to some embodiments of the present utility model; FIG. 2 is a schematic view of an explosion valve according to another embodiment of the present utility model; FIG. 3 is a schematic cross-sectional view of the structure of FIG. 2 in the direction A-A. An embodiment of the first aspect of the present utility model provides an explosion-proof valve 100 for mounting on a case cover 200 of a battery case, the explosion-proof valve 100 including a valve body 10, a connection part 11, and at least two elastic stoppers 30. Wherein the connecting part 11 is connected with one side of the valve body 10; at least two elastic stop pieces 30 are connected with the valve body 10 through the connecting portion 11, and along the circumferential direction of the valve body 10, the at least two elastic stop pieces 30 are arranged on the connecting portion 11 at intervals, each elastic stop piece 30 is provided with at least two bending sections, and along the axial direction of the valve body 10, projections of the at least two bending sections on the valve body 10 are at least partially overlapped.

In this embodiment, the case cover 200 has a pressure relief hole 201, the explosion-proof valve 100 is mounted on the case cover 200 of the battery case through the pressure relief hole 201, the valve body 10 and at least two elastic stoppers 30 are respectively located at two sides of the case cover 200, and at least two elastic stoppers 30 are used for abutting against one side of the case cover 200 facing away from the valve body 10 and abutting against the edge of the pressure relief hole 201, so that the valve body 10 is attached to the case cover 200 to seal the pressure relief hole 201.

Illustratively, the connection portion 11 is a connection post, and the connection portion 11 may be integrally connected to one side of the valve body 10 or welded to one side of the valve body 10.

Illustratively, the elastic stoppers 30 are elastic stopper pieces, and at least two elastic stoppers 30 are disposed at equal intervals.

It will be appreciated that when the number of bending segments is greater than two, at least some of the bending segments overlap in the axial direction of the valve body 10.

When the internal pressure of the battery box reaches a preset threshold value, the elastic stop piece 30 is elastically deformed under the action of the gas pressure to store elastic potential energy, so that a gas channel is formed between the valve body 10 and the box cover 200, and then the gas in the box body can be discharged from the gas channel, so that the aim of rapid pressure relief is fulfilled. When the gas pressure in the battery box is lower than the preset threshold value, the elastic stop piece 30 releases elastic potential energy, and the valve body 10 seals the pressure relief hole 201, so that the cycle is performed.

In addition, since each elastic stop piece 30 is provided with at least two bending sections, and the projections of the at least two bending sections on the valve body 10 are at least partially overlapped along the axial direction of the valve body 10, when the internal pressure of the battery box reaches a preset threshold value, the valve body 10 moves away from the box cover 200 under the action of the gas pressure, at this moment, the at least two bending sections of the elastic stop piece 30 are compressed under the driving of the tensile force of the valve body 10 and the reaction force of the box cover 200, so that the tensile stress applied to the connection part of the elastic stop piece 30 and the connection part 11 can be dispersed, and further, the occurrence of the situation that the connection part 11 of the elastic stop piece 30 and the connection part 11 breaks due to the sudden increase of the stress can be reduced, and the service life of the explosion-proof valve 100 can be improved.

Referring to fig. 3, according to some embodiments of the present utility model, the elastic stopper 30 includes a connecting section 31, an abutting section 34, and at least two bending sections; wherein, one end of the connecting section 31 is connected with one end of the connecting portion 11 far away from the valve body 10, and at least two bending sections are connected between the connecting section 31 and the abutting section 34, and the abutting section 34 is used for abutting against one side of the case cover 200.

In this embodiment, the connection section 31 is at an acute angle to the axis of the connection 11.

When the internal pressure of the battery box reaches the preset threshold, one end of the connecting section 31 connected with the connecting portion 11 receives larger tensile stress, and as at least two bending sections are connected between the connecting section 31 and the abutting section 34, at least two bending sections generate acting forces opposite to the tensile stress received by one end of the connecting section 31 between the abutting section 34 and the box cover 200, at least two bending sections can be compressed and elastically deformed, so that the tensile stress received by one end of a part of the connecting section 31 connected with the connecting portion 11 is dispersed, and the condition that the connecting portion of the connecting section 31 connected with the connecting portion 11 is easy to break can be improved.

Referring to fig. 3, according to some embodiments of the present utility model, the at least two bending sections include a first bending section 32 and a second bending section 33 connected to the first bending section 32, the first bending section 32 is configured to bend in a direction approaching the axis of the connecting portion 11, and the second bending section 33 is configured to bend in a direction separating from the axis of the connecting portion 11.

By bending the first bending section 32 and the second bending section 33 along the axial direction close to and far from the connecting portion 11 respectively, when the elastic stop member 30 is stressed, the first bending section 32 and the second bending section 33 can be compressed along the axial direction of the connecting portion 11, and further, the tensile stress of the connecting portion of the connecting section 31 and the connecting portion 11 can be dispersed.

According to some embodiments of the present utility model, one end of the connection section 31 is integrally connected to one end of the connection portion 11 remote from the valve body 10; the connecting section 31, the abutting section 34 and the at least two bending sections are integrally connected.

In this embodiment, integrally connected means manufactured by an integral molding process, and welding is not required, which is helpful for improving the service life of the product.

By integrally connecting one end of the connecting section 31 with one end of the connecting portion 11 away from the valve body 10, no connecting piece is required to be assembled between the connecting section 31 and the connecting portion 11 and welding is not required, which is helpful for simplifying the structure of the product and simplifying the assembly process.

Similarly, the connecting section 31 is integrally connected with the at least two bending sections and the abutting section 34, so that the elastic stop piece is convenient to process and manufacture, suitable for mass production, and capable of improving the condition that the connecting section 31 is easy to break due to the fact that the connecting mode such as welding is adopted between the at least two bending sections or between the at least two bending sections and the abutting section 34, and is beneficial to prolonging the service life of the elastic stop piece 30.

Referring to fig. 1, fig. 3, fig. 4, and fig. 5, fig. 4 is a schematic structural diagram of a valve body and a seal ring before assembling according to some embodiments of the present utility model; fig. 5 is a schematic structural diagram of a valve body and a seal ring after assembly according to some embodiments of the present utility model. According to some embodiments of the present utility model, the outer peripheral side of the valve body 10 is provided with a limiting step 12, the limiting step 12 is located at one side of the valve body 10 facing the elastic stopper 30, the limiting step 12 is sleeved with a sealing ring 20, and the valve body 10 is in sealing connection with the other side of the case cover 200 through the sealing ring 20.

In the present embodiment, the limit step 12 is formed by partially recessing the outer ring of the side of the valve body 10 facing the elastic stopper 30 toward the center of the valve body 10.

By arranging the sealing ring 20 on the limiting step 12 of the valve body 10, the sealing effect on the pressure relief hole 201 can be improved, and the risk of gas discharge in the battery box due to the fact that the valve body 10 is not tightly sealed under the condition that the gas pressure in the battery box does not reach a preset threshold value is reduced.

Referring to fig. 4, according to some embodiments of the present utility model, a sealing bead 21 is formed by partially protruding an inner peripheral side of the sealing ring 20, and the sealing bead 21 is located at a side of the sealing ring 20 near the elastic stopper 30 and is used for abutting between the valve body 10 and the case cover 200.

In this embodiment, the limiting step 12 is circular, and the seal ring 20 is circular, as an example. The seal bead 21 is formed by protruding the inner ring part of the side of the seal ring 20 near the case cover 200 toward the center of the seal ring 20.

The sealing bead 21 is abutted between the valve body 10 and the case cover 200, so that not only can the reliability of the assembly of the sealing ring 20 and the valve body 10 be improved, but also the sealing effect on the pressure relief hole 201 can be further improved.

Referring to fig. 1 to 3, according to some embodiments of the present utility model, a side of the valve body 10 facing away from the connecting portion 11 is provided with a plugging slot 13, and the plugging slot 13 is used for plugging and matching with a detachable component.

In the present embodiment, the insertion groove 13 is a quadrangular or hexagonal inner groove, for example.

Through setting up the jack groove 13 in the valve body 10 side that deviates from connecting portion 11, then when installing explosion-proof valve 100, utilize dismouting piece to peg graft mutually with jack groove 13 earlier, then rotate explosion-proof valve 100 through the dismouting piece to in order to install explosion-proof valve 100 in place, improved the efficiency of explosion-proof valve 100 installation and dismantlement.

Referring to fig. 3, according to some embodiments of the present utility model, the outer contour of the valve body 10 is circular, and the connection portion 11 is disposed coaxially with the valve body 10.

Through making connecting portion 11 and valve body 10 set up along the same axis, product overall structure is comparatively regular, helps improving the aesthetic property of product, helps improving the atress homogeneity of two at least elastic stopper 30 simultaneously again.

Referring to fig. 1 to 5, according to some embodiments of the present utility model, there is provided an explosion-proof valve 100 for being mounted on a case cover 200 of a battery case, the case cover 200 being provided with a pressure relief hole 201, the explosion-proof valve 100 including a valve body 10, a sealing ring 20, and two elastic stoppers 30. One side of the valve body 10 is partially protruded to form a connecting part 11, two elastic stop pieces 30 are symmetrically arranged on two opposite sides of the connecting part 11, one end of each elastic stop piece 30 is connected with the connecting part 11, and the other end is used for being abutted with the edge of the pressure relief hole 201; the outer ring part of one side of the valve body 10 facing the elastic stop piece 30 is concavely provided with a limiting step 12, and the sealing ring 20 is sleeved on the limiting step 12. Wherein, each elastic stop piece 30 has at least two bending sections, and along the axial direction of the valve body 10, the projection of the at least two bending sections on the valve body 10 is at least partially overlapped. In this way, when the internal pressure of the battery box reaches the preset threshold, the elastic stopper 30 may be elastically deformed to form a gas channel between the valve body 10 and the case cover 200, through which the gas in the battery box may be discharged to the outside, so as to achieve the purpose of rapid pressure relief. In addition, when the elastic stopper 30 is elastically deformed, at least two bending sections are also compressed, so that the tensile stress of the end of the elastic stopper 30 connected to the connecting portion 11 can be dispersed, and the occurrence of fracture caused by sudden increase of stress or repeated tensile stress of the end of the elastic stopper 30 connected to the connecting portion 11 can be reduced.

According to some embodiments of the present utility model, a second aspect embodiment of the present utility model provides a battery case comprising a case body, a case cover 200, and an explosion-proof valve 100 as in any of the first aspect embodiments. Wherein the box body is provided with an opening; the case cover 200 is covered on the opening, and the case cover 200 is provided with a pressure relief hole 201; the elastic stopper 30 is mounted to one side of the case cover 200 through the pressure relief hole 201, and the valve body 10 is located at the other side of the case cover 200.

In this embodiment, illustratively, the pressure relief hole 201 includes a circular through hole and at least two mounting holes communicating with the circumferential side of the circular through hole, the at least two mounting holes are disposed at equal intervals, when the explosion-proof valve 100 is mounted, the connecting portion 11 passes through the first through hole, and at least two elastic stoppers 30 correspondingly pass through the at least two mounting holes, and then the valve body 10 is driven to rotate relative to the case cover 200, so that the at least two elastic stoppers 30 abut against edges of the at least two mounting holes.

The battery box according to the present utility model, including the explosion-proof valve 100 according to the first embodiment, has the technical effects of any of the above embodiments, and will not be described herein.

Referring to fig. 7 to fig. 10, fig. 7 is a schematic structural diagram of an assembled explosion-proof valve and a case cover according to some embodiments of the present utility model; FIG. 8 is a schematic perspective view of the lid of FIG. 7; FIG. 9 is a schematic view of an explosion-proof valve and a cover according to some embodiments of the present utility model; fig. 10 is a schematic view of an explosion-proof valve and a case cover according to another embodiment of the present utility model. According to some embodiments of the present utility model, at least two limiting protrusions 202 are disposed on a side of the case cover 200 facing the elastic stopper 30, and the at least two limiting protrusions 202 are disposed on opposite sides of the pressure release hole 201 and located at edges of the pressure release hole 201, for abutting against the elastic stopper 30.

In this embodiment, the shape of the spacing protrusion 202 includes, but is not limited to, rectangular, angular, or trapezoidal.

When the explosion-proof valve 100 is installed, at least two elastic stop pieces 30 are abutted to one side of the box cover 200, which is away from the valve body 10, through the pressure relief holes 201, then the valve body 10 is driven to rotate by the dismounting piece, when the valve body 10 rotates to a certain angle, the elastic stop pieces 30 can be abutted to the limit protrusions 202, and at the moment, the elastic stop pieces 30 can not continue to rotate under the limit stop action of the limit protrusions 202, so that the risk that the elastic stop pieces 30 fall off from the pressure relief holes 201 after rotating to the initial position again can be reduced, and the reliability and stability of the assembly of the explosion-proof valve 100 are improved.

Referring to fig. 8 to 10, according to some embodiments of the present utility model, at least one limiting block 203 is further disposed on a side of the case cover 200 facing the elastic stopper 30, the at least one limiting block 203 is located between two adjacent limiting protrusions 202, and a side of the limiting block 203 facing away from the case cover 200 has a first guiding slope; the elastic stopper 30 is provided with a second guide slope 341 on a side facing the case cover 200, and the first guide slope is adapted to the second guide slope 341 and is adapted to slidably fit with the second guide slope 341.

In this embodiment, the limiting block 203 is a wedge block.

During the process of rotating the explosion-proof valve 100, the second guiding inclined plane 341 on the elastic stop piece 30 can be in sliding fit with the first guiding inclined plane on the limiting block 203, so that the abutting section 34 of the elastic stop piece 30 passes over the limiting block 203 and then is limited between the limiting projection 202 and the limiting block 203, and the reliability and stability of the installation of the explosion-proof valve 100 can be further improved.

Referring to fig. 6, 7, 9 and 10, according to some embodiments of the present utility model, at least two limiting ribs 40 are disposed on a peripheral side of the connecting portion 11 at intervals, and the at least two limiting ribs 40 are disposed opposite to each other, and the at least two limiting ribs 40 are configured to abut against an inner peripheral side of the pressure relief hole 201.

In this embodiment, the at least two spacing ribs 40 are illustratively disposed at equal intervals therebetween.

After the explosion-proof valve 100 is installed in place, at least two limiting ribs 40 which are arranged oppositely are abutted against the inner peripheral side of the pressure relief hole 201, so that the problem that the explosion-proof valve 100 is easy to shake relative to the case cover 200 can be solved, and the installation stability of the explosion-proof valve 100 is further improved.

According to some embodiments of the utility model, a third aspect embodiment of the utility model provides a battery comprising a battery compartment according to any of the embodiments of the second aspect, the battery compartment housing one or more battery cells.

The battery provided in the third embodiment of the present utility model, including the battery case according to any one of the second embodiments, has the technical effects of any one of the above embodiments, and is not described in detail herein.

According to some embodiments of the present utility model, a fourth aspect embodiment of the present utility model provides an electrical device comprising a battery according to an embodiment of the third aspect for powering the electrical device.

The power consumption device according to the fourth aspect of the present utility model includes the battery according to the third aspect, and therefore has the technical effects of any of the above embodiments, and will not be described in detail herein.

The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims (14)

1. An explosion-proof valve for mounting on a cover of a battery box, the explosion-proof valve comprising:

a valve body;

the connecting part is connected with one side of the valve body;

the at least two elastic stop pieces are connected with the valve body through the connecting part, are arranged at intervals on the connecting part along the circumferential direction of the valve body and are used for being abutted with one side of the box cover, and the valve body is used for being connected with the other side of the box cover;

each elastic stop piece is provided with at least two bending sections, and the projections of the at least two bending sections on the valve body are at least partially overlapped along the axial direction of the valve body.

2. The explosion protection valve of claim 1, wherein said elastic stop comprises a connecting section, an abutment section and at least two of said bending sections;

one end of the connecting section is connected with one end of the connecting part far away from the valve body, at least two bending sections are connected between the connecting section and the abutting section, and the abutting section is used for being abutted with one side of the box cover.

3. The explosion proof valve of claim 2, wherein at least two of the bending segments comprise a first bending segment configured to bend in a direction proximate to the axis of the connection and a second bending segment connected to the first bending segment configured to bend in a direction distal to the axis of the connection.

4. A blast-resistant valve as set forth in claim 2 or 3, wherein one end of said connecting section is integrally connected to one end of said connecting section remote from said valve body;

and/or the connecting section, the abutting section and at least two bending sections are integrally connected.

5. An explosion-proof valve according to any one of claims 1-3, wherein a limit step is arranged on the outer periphery of the valve body, the limit step is positioned on one side of the valve body facing the elastic stop piece, a sealing ring is sleeved on the limit step, and the valve body is in sealing connection with the other side of the box cover through the sealing ring.

6. The explosion-proof valve according to claim 5, wherein a seal bead is formed by protruding an inner peripheral side of the seal ring partially in an axial direction close to the connecting portion, the seal bead being located on a side of the seal ring close to the elastic stopper, and being used for abutting between the valve body and the case cover.

7. An explosion-proof valve according to any one of claims 1-3, wherein a socket is provided on the side of the valve body facing away from the connection part, said socket being adapted for a socket fit with a dismounting member.

8. A valve according to any one of claims 1-3, wherein the outer contour of the valve body is circular and the connection is arranged coaxially with the valve body.

9. A battery box, comprising:

a case having an opening;

the box cover is covered on the opening and is provided with a pressure relief hole; and

the explosion proof valve of any one of claims 1-8, the elastic stopper being mounted to one side of the case cover through the pressure relief hole, the valve body being located at the other side of the case cover.

10. The battery box as claimed in claim 9, wherein the side of the box cover facing the elastic stopper is provided with at least two limiting protrusions, and the at least two limiting protrusions are disposed on opposite sides of the pressure release hole and located at edges of the pressure release hole, and are used for abutting against the elastic stopper.

11. The battery box according to claim 10, wherein at least one limiting block is further arranged on one side of the box cover facing the elastic stop piece, at least one limiting block is positioned between two adjacent limiting protrusions, and a first guiding inclined plane is arranged on one side of the limiting block facing away from the box cover;

the elastic stop piece is provided with a second guide inclined plane towards one side of the box cover, and the first guide inclined plane is matched with the second guide inclined plane and is used for being in sliding fit with the second guide inclined plane.

12. The battery box according to claim 11, wherein at least two limiting ribs are arranged on the periphery of the connecting portion at intervals, the at least two limiting ribs are arranged opposite to each other, and the at least two limiting ribs are used for being abutted against the inner periphery of the pressure relief hole.

13. A battery comprising a battery compartment according to any of claims 9-12, said battery compartment housing one or more battery cells.

14. An electrical device comprising a battery according to claim 13, the battery being adapted to power the electrical device.