CN115719866A

CN115719866A - Sealing element, energy storage device and electric equipment

Info

Publication number: CN115719866A
Application number: CN202211537390.7A
Authority: CN
Inventors: 李茂松
Original assignee: Xiamen Hithium Energy Storage Technology Co Ltd
Current assignee: Xiamen Hithium Energy Storage Technology Co Ltd
Priority date: 2022-12-01
Filing date: 2022-12-01
Publication date: 2023-02-28
Anticipated expiration: 2042-12-01
Also published as: CN115719866B

Abstract

The invention discloses a sealing element, an energy storage device and electric equipment, wherein the sealing element comprises: the sealing plug is provided with an installation groove, and the peripheral surface of the groove peripheral wall of the installation groove is used for being abutted against the hole wall of the liquid injection hole so as to seal the liquid injection hole; the driving piece is located in the mounting groove and is used for applying the driving force towards the hole wall of the liquid injection hole to the groove peripheral wall, the sealing plug of the sealing piece is provided with the mounting groove, the peripheral surface of the groove peripheral wall of the mounting groove is abutted to the hole wall of the liquid injection hole, the liquid injection hole can be sealed, and the sealing piece can be taken out of the liquid injection hole when liquid injection is needed. In addition, the driving piece can exert towards the drive power of annotating the liquid hole pore wall to the groove perisporium, and then the butt between sealing plug and the pore wall of annotating the liquid hole is inseparabler, and the leakproofness effect that can realize is better.

Description

Sealing member, energy storage device and consumer

Technical Field

The invention relates to the technical field of energy storage devices, in particular to a sealing element for a liquid filling hole of an energy storage device and the energy storage device.

Background

In the manufacturing process of the energy storage device, the shell forms a sealing structure to ensure that the battery cell is isolated from the external environment and prevent the electrolyte from leaking. However, the electrolyte loss is caused by repeated charging and discharging of the energy storage device within the service life, and the service performance of the energy storage device is reduced.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention aims to provide a sealing element for a liquid filling hole of an energy storage device, which can realize good sealing performance, and has stable sealing structure and strong working reliability. And, the sealing member can be followed and annotated the liquid hole and dismantled for annotate the liquid operation very convenient, be favorable to improving energy memory's utilization ratio.

Another object of the present invention is to provide an energy storage device and an electric device having the energy storage device.

A seal according to an embodiment of the invention comprises: the sealing plug is provided with an installation groove, and the peripheral surface of the groove peripheral wall of the installation groove is used for being abutted against the hole wall of the liquid injection hole so as to seal the liquid injection hole; and the driving piece is positioned in the mounting groove and is used for applying driving force towards the hole wall of the liquid injection hole to the circumferential wall of the groove.

According to the sealing element provided by the embodiment of the invention, the sealing plug is provided with the mounting groove, the peripheral surface of the groove peripheral wall of the mounting groove is abutted against the hole wall of the liquid injection hole, the liquid injection hole can be sealed, and the sealing element can be taken out from the liquid injection hole when liquid injection is needed, so that the liquid injection operation is very convenient, and electrolyte can be supplemented in time to improve the utilization rate of the energy storage device. In addition, the driving piece can exert the drive power towards annotating the liquid hole pore wall to the groove perisporium, on the one hand, can make the butt between sealing plug and the pore wall of annotating the liquid hole more inseparable, and the sealed effect that can realize is tight, avoids the sealing plug to be ejecting annotate the liquid hole, has greatly reduced the risk of electrolyte leakage or gas leakage, and the sealed effect that can realize is good.

In addition, the electrocardiograph according to the above embodiment of the present invention may further have the following additional technical features:

according to some embodiments of the invention, the seal further comprises: the supporting part extends along the circumferential direction of the groove circumferential wall, the supporting part is a cylinder and is positioned between the groove circumferential wall and the annular spring, the annular spring abuts against the inner circumferential surface of the supporting part, and the outer circumferential surface of the supporting part abuts against the inner circumferential surface of the groove circumferential wall.

According to some embodiments of the invention, the driving member is an annular spring, the turns of the annular spring extending helically around a 5-turn centre line and being connected end to end, and the end of the support part near the bottom side of the mounting groove is provided with a plurality of openings

The opening grooves are distributed at intervals along the circumferential direction of the supporting part.

According to some embodiments of the invention, the plurality of open grooves include a first open groove and a second open groove which are arranged at an interval, in an axial direction of the support portion, a height of the first open groove is larger than a length of the second open groove, and the second open groove is used for being clamped with the spring wire.

0 according to some embodiments of the present invention, each of the second open grooves is located between two adjacent first open grooves.

According to some embodiments of the invention, the support part is provided with a positioning groove on an inner peripheral surface of an end part close to the bottom surface of the mounting groove, the positioning groove is recessed toward the injection hole wall side, and an outer edge of the annular spring abuts against the positioning groove.

According to some embodiments of the invention, the annular spring is in a compressed state when fitted in the mounting groove. .

According to some embodiments of the invention, the driver is a chock, the chock comprising a cylindrical portion and a first tapered 5 portion, the outer diameter of the cylindrical part is larger than the inner diameter of the end part of the supporting part close to the bottom surface of the mounting groove, the first

A tapered portion is provided on one side of the end surface of the cylindrical portion.

According to some embodiments of the invention, the supporting member further includes an end wall disposed at an end of the cylinder away from the mounting groove, and a limiting portion is disposed at a side of the first tapered portion away from the cylindrical portion, and the limiting portion extends into the supporting portion and abuts against the end wall.

0 according to some embodiments of the invention, the end wall has a through hole, and the stopper portion extends into the support portion and penetrates through the through hole

Is arranged in the through hole. According to some embodiments of the invention, the stopper further comprises a second tapered portion provided on a side of the cylindrical portion remote from the first tapered portion, the second tapered portion having an outer diameter decreasing in a direction away from the cylindrical portion.

According to some embodiments of the invention, the support further comprises an end wall provided at an end 5 of the cylinder remote from the mounting groove, the cylinder, the end wall and the sealing plug cooperate to define a sealing cavity, and the annular spring is located at the sealing plug

And sealing the cavity.

According to some embodiments of the invention, a portion of the support is located outside the mounting slot.

According to some embodiments of the invention, the support is made of metal.

According to some embodiments of the invention, the sealing plug is an elastomeric member.

0 according to some embodiments of the invention, an inner circumferential surface of the groove circumferential wall is provided with an inner protrusion, and an outer circumferential surface of the support portion is provided with an outer protrusion

And an outer convex part is arranged, and the outer convex part is clamped on one side of the notch of the mounting groove, which is far away from the inner convex part.

An energy storage device according to an embodiment of the present invention includes: the shell is provided with a liquid injection hole; according to the sealing element of the liquid filling hole of the energy storage device, the sealing element is detachably inserted into the liquid filling hole.

The electric equipment according to the embodiment of the invention comprises: an electric equipment body; according to the energy storage device provided by the embodiment of the invention, the energy storage device is used for supplying power to the electric equipment body.

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 diagram of a cover and seal of an energy storage device according to an embodiment of the invention;

FIG. 2 is a schematic structural view of a seal according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of FIG. 2;

fig. 4 is a schematic view of the construction of a sealing plug and support according to an embodiment of the invention;

FIG. 5 is a schematic structural view of a seal according to an embodiment of the present invention;

FIG. 6 is a schematic structural view of a seal according to an embodiment of the present invention;

FIG. 7 is a cross-sectional view of FIG. 6;

FIG. 8 is a schematic structural view of a seal according to another embodiment of the present invention;

FIG. 9 is a schematic structural view of a seal according to yet another embodiment of the present invention;

fig. 10 is a schematic view of the construction of a sealing plug, a support and a plug block according to an embodiment of the invention.

Reference numerals:

a seal member 100;

a sealing plug 10; a mounting groove 11; a groove peripheral wall 12; a liquid injection hole 13; an inner convex portion 14;

a driver 20; a spring wire 21; an annular spring 22; a stopper 23; the cylindrical portion 231; the first tapered portion 232; a second tapered portion 233;

a support member 30; a support portion 31; an open groove 311; a first open groove 3111; a second open groove 3112; an end wall 32; a sealed cavity 301; a mounting cavity 302; an outer convex portion 33; an opening 34; a positioning groove 35; a stopper portion 36; a body 37;

a housing 40; a cover 41.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

In the description of the present invention, "a first feature" or "a second feature" may include one or more of the features, and "a plurality" means two or more, and the first feature may be "on" or "under" the second feature, and may include the first and second features being in direct contact, or may include the first and second features being not in direct contact but being in contact with another feature therebetween, and the first feature being "on", "above" and "above" the second feature may include the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is higher in level than the second feature.

The sealing member 100 of the charge hole 13 of the energy storage device and the energy storage device according to the embodiment of the invention will be described below with reference to the drawings.

Referring to fig. 1, an energy storage device according to an embodiment of the present invention may include: a housing 40 and a seal 100.

Specifically, the housing 40 may serve as an outer shell of the energy storage device, and provide a stable installation environment for the internal structure (e.g., battery cells, etc.) of the energy storage device. And the housing 40 can isolate the internal structure of the energy storage device from the external environment, which is beneficial to ensuring the stable electrochemical performance of the energy storage device. As shown in FIG. 1, the case 40 may be provided with a pour hole 13. Specifically, during the manufacturing process, the electrolyte may be injected into the case 40 through the injection hole 13; in energy memory's the service life, energy memory leads to behind the electrolyte loss through many times charge and discharge, can pour into electrolyte into to energy memory once more through annotating liquid hole 13 to prolong energy memory life-span, improve energy memory's utilization ratio. In some embodiments, the case 40 may include a cover 41, the cover 41 is located at the end of the energy storage device, and the liquid filling hole 13 is formed in the cover 41, so that the liquid filling operation is more convenient.

In some related technologies, the injection hole is usually welded by a laser welding process after the electrolyte is injected, so as to avoid the electrolyte from leaking out. However, due to the non-detachable characteristic of welding, a new liquid supplementing channel cannot be formed at the liquid filling hole of the sealing piece and the cover body, and liquid supplementing is difficult.

In the solution of the present application, in order to overcome the problem that the liquid injection hole and the sealing element are welded to be dead, and the liquid cannot be replenished, as shown in fig. 1, the sealing element 100 is detachably inserted into the liquid injection hole 13, so that on one hand, when the energy storage device needs to be injected with the electrolyte, the sealing element 100 can be detached from the liquid injection hole 13, and the liquid injection operation is implemented, and the liquid injection operation is very convenient; when the energy storage device needs to work normally, the sealing element 100 can be directly inserted into the liquid injection hole 13, so that the stable electrochemical performance of the energy storage device is ensured, and the installation operation of the sealing element 100 is also very convenient. On the other hand, avoid adopting welding process to sealing member 100, avoid the welding defect that causes because of the clean degree problem of welding part, this scheme has avoided welding process from the technology, has solved the risk of not tight because of the welding causes from the root to be favorable to reducing energy memory's manufacturing cost.

The sealing member 100 of the charging hole 13 of the energy storage device according to the embodiment of the invention is described below with reference to fig. 2 to 10.

The sealing member 100 of the injection hole 13 of the energy storage device according to the embodiment of the invention may comprise a sealing plug 10.

Specifically, as shown in fig. 2, 4, 6 and 8, the sealing plug 10 may have a mounting groove 11, and the mounting groove 11 may serve as a mounting space for other structures in the sealing member 100, which is beneficial to make the structural design of the sealing member 100 more reasonable. The installation groove 11 can reduce the weight of the sealing plug 10, and the sealing member 100 can be detached from the liquid injection hole 13 more easily. For example, in some embodiments, the mounting slot 11 is configured as a cylindrical slot, such that the mounting slot 11 is regular in shape to facilitate processing of the object.

As shown in fig. 3, fig. 5 and fig. 7, the outer peripheral face of the groove peripheral wall 12 of the mounting groove 11 can abut against the hole wall of the liquid injection hole 13, and sealing of the liquid injection hole 13 can be realized, for example, the electrolyte inside the energy storage device is difficult to leak through the liquid injection hole 13, impurity and dirt in the external environment are difficult to enter the energy storage device through the liquid injection hole 13, the above beneficial effects can be realized in the liquid injection hole 13 through the plug-in mounting of the sealing plug 10, a welding process is not required, the liquid injection operation of the energy storage device can be very convenient and fast, the sealing tightness caused by the welding process problem is avoided, and the production cost is reduced.

In order to make the outer peripheral surface of the groove peripheral wall 12 and the hole wall of the liquid injection hole 13 abut more tightly, the sealing element 100 may include a driving element 20, specifically, the driving element 20 is located in the installation groove, and the driving element 20 may be configured to apply a driving force towards the hole wall of the liquid injection hole 13 to the groove peripheral wall 12, after the groove peripheral wall 12 receives the driving force of the driving element 20, the sealing plug 10 may be more tightly matched with the hole wall, which is more beneficial to reducing a gap between the sealing plug 10 and the hole wall, and reducing a risk of leakage of the electrolyte, so that the sealing effect achieved by the sealing element 100 is better.

For example, in some embodiments, the sealing plug 10 is deformed after being mounted in the injection hole 13 to enable the outer peripheral surface of the groove peripheral wall 12 of the mounting groove 11 to be in close contact with the wall of the injection hole 13, thereby achieving a sealing effect. At the same time, the driving member 20 can apply a driving force to the groove peripheral wall 12 towards the hole wall of the liquid filling hole 13 to achieve a good sealing effect. In some embodiments, the driving member 20 may be an annular spring 22, and the annular spring 22 is deformed by the pressure of the circumferential groove wall 12, so as to generate a pre-tightening force, i.e. a driving force, on the sealing plug 10 in a direction toward the hole wall of the liquid injection hole 13, thereby making the fit between the circumferential groove wall 12 and the hole wall tighter.

Under some operating modes of energy memory work, the inside atmospheric pressure that can produce of energy memory, atmospheric pressure dashes to sealing member 100 and has the trend that makes sealing plug 10 produce and keep away from the deformation of pore wall direction, and driving piece 20 can exert drive power to groove perisporium 12, for example in some embodiments, sealing plug 10 can make driving piece 20 produce bigger deflection if produce deformation, and then the drive power that driving piece 20 produced can make groove perisporium 12 and keep closely cooperating between annotating the liquid hole 13 pore wall, realize good sealed effect, avoid the air current from sealing plug 10 and annotate the clearance outflow between the liquid hole 13 pore wall.

It should be noted that the sealing plug 10 of the embodiment of the present invention is made of a material with low hardness, and the sealing plug 10 can be in interference fit with the hole wall of the liquid injection hole 13 by utilizing the elasticity of the sealing plug 10, and further the sealing plug 10 can be pressed against the inner wall surface of the liquid injection hole 13 to achieve sealing. Since the sealing plug 10 is easily deformed, the sealing plug 10 can achieve a better sealing effect together with the driving member 20.

According to the sealing element 100 provided by the embodiment of the invention, the sealing plug 10 is provided with the mounting groove 11, the outer peripheral surface of the groove peripheral wall 12 of the mounting groove 11 is abutted against the hole wall of the injection hole 13, the injection hole 13 can be sealed, and the sealing element 100 can be taken out from the injection hole 13 when liquid injection is required, so that the liquid injection operation is very convenient, and electrolyte can be supplemented in time to improve the utilization rate of the energy storage device. In addition, the driving member 20 can apply a driving force towards the hole wall of the liquid injection hole 13 to the groove peripheral wall 12, so that the sealing plug 10 is abutted against the hole wall of the liquid injection hole 13 more tightly, the realized sealing effect is tight, the risk of electrolyte leakage or air leakage is greatly reduced, the realized sealing effect is better, and the electrochemical performance of the energy storage device is more stable.

Because the sealing element 100 of the injection hole 13 of the energy storage device has the beneficial technical effects, according to the energy storage device of the embodiment of the invention, the sealing plug 10 is provided with the installation groove 11, the outer peripheral surface of the groove peripheral wall 12 of the installation groove 11 is abutted against the hole wall of the injection hole 13, the injection hole 13 can be sealed, and the sealing element 100 can be taken out from the injection hole 13 when injection is needed, so that the injection operation is very convenient, and electrolyte can be supplemented in time to improve the utilization rate of the energy storage device. In addition, the driving part 20 can apply the driving force towards the hole wall of the liquid injection hole 13 to the groove peripheral wall 12, so that the sealing plug 10 is more tightly abutted against the hole wall of the liquid injection hole 13, the risk of electrolyte leakage or air leakage is greatly reduced, the realized sealing effect is better, and the electrochemical performance of the energy storage device is more stable.

According to some embodiments of the present invention, as shown in fig. 2-10, the seal 100 may further include a support 30. Specifically, the support 30 may include a support portion 31 extending in the circumferential direction of the groove circumferential wall 12, and the support portion 31 is a cylindrical body, which may facilitate the manufacturing process of the support portion 31. The support portion 31 is located between the groove peripheral wall 12 and the annular spring 22, the annular spring 22 abuts against the inner peripheral surface of the support portion 31, and the outer peripheral surface of the support portion 31 abuts against the inner peripheral surface of the groove peripheral wall 12.

Specifically, in the sealed state, the driving force generated by the ring spring 22 acts on the support portion 31, and the support portion 31 transmits the driving force to the tank peripheral wall 12, so that the tank peripheral wall 12 can be brought into close contact with the hole wall of the pour hole 13, thereby achieving the sealing effect. Since the support portion 31 is formed in a tubular shape, the contact area between the support portion 31 and the peripheral wall 12 is large, and the support portion 31 can relatively uniformly apply a driving force to the peripheral wall 12, so that the sealing effect of the sealing plug 10 can be exerted on the liquid inlet 13 in any circumferential direction, and the sealing effect can be improved. Moreover, the support portion 31 can support the sealing plug 10, which is beneficial to prolonging the service life of the sealing plug 10, and reducing the use cost of the sealing element 100.

In some embodiments of the present invention, as shown in fig. 3 and 6, the driving member 20 may be an annular spring 22, the multiple coils 21 of the annular spring 22 extend helically around the annular centerline and the multiple coils 21 are connected end to end. Thus, the specific structure of the ring spring 22 may include a plurality of coils of the spring wire 21, and the plurality of coils of the spring wire 21 are arranged along a ring center line passing through a spiral center point of each coil of the spring wire 21. Structurally, the amount of deformation generated by the multi-turn spring wire 21 can be relatively independent and does not interfere with each other. For example, the ring spring 22 can be placed in the mounting groove 11, and the multi-turn spring wire 21 can form multi-point pressing force on the supporting portion 31, which is beneficial to make the structural design of the sealing member 100 more compact.

Moreover, after the deformation of the annular spring 22 is increased due to the increase of the air pressure, the driving force of the annular spring 22 still keeps the direction towards the hole wall of the liquid injection hole 13, and the sealing plug 10 is not forced to be pushed out of the liquid injection hole 13 along the axial direction of the mounting groove 11, so that the sealing plug 10 can be prevented from being pushed out of the liquid injection hole 13 along the axial direction, and therefore, the stable electrochemical performance of the energy storage device can be ensured.

In addition, when one spring wire 21 fails, the driving force of the other spring wire 21 can act on the position on the groove peripheral wall 12 which is not directly opposite to the other spring wire through the supporting part 31, so that the sealing effect between the whole groove peripheral wall 12 and the hole wall of the liquid injection hole 13 is maintained, and the sealing effect of the sealing member 100 is better prevented from failing. It should be noted that the specific configuration and type of the driving member 20 can be flexibly set according to actual requirements, for example, the driving member 20 can be an annular spring 22, a plug 23, etc.

By the annular configuration of the annular spring 22, the multi-turn spring wires 21 of the annular spring 22 can be deformed relatively independently and without influencing each other. After the sealing member 100 is mounted in the liquid injection hole 13, there is a machining dimension error between the outer peripheral surface of the groove peripheral wall 12 of the mounting groove 11 and the hole wall of the liquid injection hole 13, which may result in uneven stress and uneven sealing effect.

For example, at some positions, the size of the groove peripheral wall 12 is large enough to enable the groove peripheral wall 12 to be tightly abutted against the hole wall of the liquid injection hole 13, and the driving force required to be provided by the spring wire 21 corresponding to the position is small, so that the sealing requirement can be met; in other positions, the smaller size of the groove peripheral wall 12 causes the weaker joint between the groove peripheral wall 12 and the hole wall of the liquid injection hole 13, and the spring wire 21 corresponding to the position can provide larger driving force and also can meet the sealing requirement.

For another example, at some positions, the gas exerts a larger pressure on the slot peripheral wall 12, the spring wire 21 corresponding to the position can provide a larger driving force to ensure the sealing performance at the position, and at other positions, the gas exerts a smaller pressure on the slot peripheral wall 12, and the spring wire 21 corresponding to the position only needs to provide a smaller driving force to ensure the sealing performance. Therefore, the multi-coil spring wire 21 independently applies driving force to different positions of the groove peripheral wall 12, and the outer peripheral surface of the entire groove peripheral wall 12 of the mounting groove 11 can be tightly fitted with the hole wall of the injection hole 13, so that a better sealing effect can be achieved.

In addition, in the scheme of the application, as shown in fig. 2 and fig. 3, the spring wire 21 of the annular spring 22 extends spirally around the annular center line, each coil of the spring wire 21 can deform along the radial direction of the annular center line, each coil of the spring wire 21 can deform independently, so that the probability of fatigue damage of the whole annular spring 22 is reduced, the fatigue resistance of the annular spring 22 is good, and the service life of the annular spring 22 is prolonged. Moreover, after a certain circle of spring wire 21 fails due to fatigue, the whole annular spring 22 cannot fail, and other spring wires 21 can still provide driving force for the sealing plug 10, so that safety accidents caused by the fact that the sealing effect of the sealing element 100 is greatly reduced are avoided.

In some embodiments in which the driving member 20 is an annular spring 22, as shown in fig. 3 and 7, the annular center line is perpendicular to the axis of the groove peripheral wall 12, in other words, the annular spring 22 is horizontally placed in the installation groove 11, the direction of the deformation generated by each coil of spring wire 21 is perpendicular to the axis of the groove peripheral wall 12 and is distributed around the annular center line, each coil of spring wire 21 can effectively contact with the supporting portion 31, which is beneficial to make the multiple coils of spring wires 21 more uniformly apply driving force to the supporting portion 31, and the sealing effect achieved is good.

For example, in the sealed state, the outer peripheral surfaces of the hole wall of the pour hole 13 and the groove wall of the attachment groove 11 are pressed, so that both the sealing plug 10 and the annular spring 22 are deformed, and the annular spring 22 can be compressively deformed. After the sealing member 100 is assembled, the ring-shaped spring 22 releases its elastic force, and provides an expanding force toward the hole wall of the liquid injection hole 13 to the inner peripheral wall of the support member 30, thereby achieving a tight sealing effect. In some embodiments where the ring spring 22 is horizontally disposed, as shown in fig. 3, the ring spring 22 may be close to the bottom wall of the mounting groove 11 in the mounting groove 11, and the ring spring 22 may be located at the middle lower portion of the mounting groove 11 shown in fig. 3, so that the bottom wall of the mounting groove 11 may support the ring spring 22, and the ring spring 22 may be more stable in working state after being mounted, thereby preventing the ring spring 22 from being displaced after being pressed by an external force, and preventing the sealing effect of the ring seal 100 from being affected.

Also, in some embodiments in which the annular center line is perpendicular to the axis of the groove peripheral wall 12, as shown in fig. 4 and 5, the end portion of the support portion 31 near the groove bottom surface of the mounting groove 11 may be provided with a plurality of open grooves 311, for example, the open grooves 311 may be elongated grooves or the like, and the plurality of open grooves 311 may be distributed at intervals in the circumferential direction of the support portion 31, for example, uniformly distributed at intervals in the circumferential direction of the support portion 31.

Therefore, on one hand, at least part of the spring wires 21 of the annular spring 22 can be clamped with the open grooves 311, and the open grooves 311 can limit the annular spring 22; on the other hand, the structural strength of the end part of the supporting part 31 close to the bottom surface of the mounting groove 11 can be reduced by the opening groove 311, the supporting part 31 can be deformed towards the groove peripheral wall 12 more easily by the annular spring 22, the supporting part 31 can be effectively driven to expand and press the groove peripheral wall 12 by the expansion force of the annular spring 22, and the sealing effect of the sealing element 100 is better.

In some embodiments in which the supporting portion 31 is provided with a plurality of opening grooves 311, as shown in fig. 4 and 5, the plurality of opening grooves 311 may include a first opening groove 3111 and a second opening groove 3112 which are arranged at intervals, one or more of the first opening grooves 3111 may be provided, and one or more of the second opening grooves 3112 may be provided. Also, in the axial direction of the support portion 31, the length of the first opening groove 3111 is greater than that of the second opening groove 3112, and the second opening groove 3112 may be used to engage with the spring wire 21.

Specifically, second open slot 3112 is with spring wire 21 joint, avoids annular spring 22 to take place the displacement, and spring wire 21 can offset with the border of second open slot 3112 in order to effectively drive the extension of supporting part 31, is favorable to ensureing the stability of annular spring 22 work, is favorable to ensureing the sealing reliability of sealing member 100.

Moreover, by reasonably setting the arrangement positions of the first opening groove 3111 and the second opening groove 3112 along the circumferential direction of the support portion 31 and the length of the second opening groove 3112, for example, two first opening grooves 3111 may be adjacently arranged, and a blade body 37 may be formed between adjacent first opening grooves 3111, for example, a long-strip-shaped blade body 37 is formed. Because the length of first open slot 3111 is longer, the length of the bullet piece body 37 that forms is longer, and when annular spring 22 offseted with bullet piece body 37, in the axial of supporting part 31, spring wire 21 can be supported and lie in bullet piece body 37 middle part or middle and lower part position mutually, makes bullet piece body 37 produce the deformation towards groove perisporium 12 more easily, makes sealing plug 10 inseparabler with annotating the pore wall laminating of liquid hole 13 from this, realizes good sealed effect.

In some embodiments, as shown in fig. 4 and 5, each second opening groove 3112 may be located between two adjacent first opening grooves 3111, so that a blade body 37 is formed between two adjacent first opening grooves 3111, and a second opening groove 3112 is provided on at least one blade body 37, so that the blade body 37 can stably cooperate with the spring wire 21 and deform and expand under the expanding force of the spring wire 21. And the two second notch grooves 3112 are not directly adjacent to each other in the circumferential direction of the supporting portion 31, so as to avoid the difficulty in expanding and deforming the sheet body between the two second notch grooves 31112. This ensures the uniformity of expansion of the support portion 31 in all circumferential directions.

In some embodiments where the support portion 31 includes the blade bodies 37, the blade bodies 37 may be uniformly spaced along the circumferential direction of the support portion 31, so as to facilitate the groove peripheral wall 12 to be more uniformly driven by the driving force in the circumferential direction of the support portion 31, and to facilitate the support portion 31 to be closely attached to the groove peripheral wall 12 in any direction.

In some embodiments where the support 31 is provided with the open groove 311, as shown in FIGS. 4 and 5, the inner peripheral surface of the end of the support 31 near the bottom surface of the mounting groove 11 may be provided with a positioning groove 35, and the positioning groove 35 may be recessed toward the wall side of the pouring hole 13, for example, the positioning groove 35 may be an annular groove near the end of the inner peripheral surface of the support 31. The outer edge of the annular spring 22 abuts against the positioning groove 35. From this the cell wall of constant head tank 35 can carry out along the axial spacing of supporting part 31 to annular spring 22, avoids annular spring 22 slippage etc. to appear, makes annular spring 22's operating condition more stable. The annular spring 22 can be always kept at a position matched with the region where the supporting portion 31 is provided with the open groove 311, and the annular spring 22 can be always kept at a position where the supporting portion 31 is effectively expanded, thereby ensuring the sealing effect.

In some embodiments in which the supporting portion 31 is provided with the positioning groove 35, the cross section of the positioning groove 35 along the axial direction of the supporting portion 31 may be arc-shaped, so that the positioning groove 35 may be fitted with the shape of the outer edge of the annular spring 22, the spring wire 21 of the annular spring 22 may be in full contact with the groove wall of the positioning groove 35, and the realized limiting effect is better.

In some embodiments of the present invention, the plane of each coil 21 is at an acute angle with respect to the plane of the circular centerline, in other words, the angle between the plane of each coil 21 and the circular centerline is at an acute angle, the plane of each coil 21 extends obliquely with respect to the circular centerline, and the circular spring 22 may be formed as a canted coil spring. And the specific degree of the acute angle can be flexibly set according to actual conditions, for example, the angle can be 30 °, 50 °, 60 °, 70 ° and the like.

With the above configuration of the annular spring 22, the driving force that the annular spring 22 can provide can be maintained within a more stable range in the sealing state of the seal member 100. And under some conditions, the driving force of the annular spring 22 does not decay too quickly, even after the annular spring 22 has been in operation for a long time.

In some embodiments, in which the plane of each coil of spring wire 21 forms an acute angle with the plane of the circular center line, the extending direction of the open slot 311 may be the same as the spring wire 21, so that the spring wire 21 can be snapped into the open slot 311, and the open slot 311 can limit the circular spring 22.

According to some embodiments of the invention, the outer circumference of the annular spring 22 abuts the inner circumference of the groove peripheral wall 12. In a sealed state, the driving force generated by the annular spring 22 can directly act on the inner circumferential surface of the groove circumferential wall 12, so that the outer circumferential surface of the groove circumferential wall 12 can be abutted with the hole wall of the liquid injection hole 13 more tightly, the leakage of the electrolyte can be effectively avoided, and a good sealing effect is realized.

According to some embodiments of the present invention, when the ring spring 22 is assembled in the mounting groove 11, the ring spring 22 is in a compressed state, and the expansion force generated by the ring spring 22 can act on the inner circumferential surface of the supporting portion 31, so that the outer circumferential surface of the supporting portion 31 can be tightly abutted to the sealing plug 10, and further the sealing plug 10 can be tightly abutted to the hole wall of the liquid injection hole 13, thereby achieving a good sealing effect and effectively avoiding the leakage of the electrolyte.

According to some embodiments of the present invention, as shown in fig. 8-10, the driving member 20 may be a stopper 23, the stopper 23 may include a cylindrical portion 231 and a first tapered portion 232, and an outer circumferential surface of the cylindrical portion 231 should be in close contact with an inner circumferential surface of the supporting portion 31 near the bottom wall of the mounting groove 11. For example, the cylindrical portion 231 may be configured as a cylindrical body, and the first tapered portion 232 may be configured as a tapered mesa structure. Further, since the outer diameter of the cylindrical portion 231 is larger than the inner diameter of the end portion of the support portion 31 close to the bottom surface of the mounting groove 11, the stopper 23 is mounted on the support portion 31, and then the cylindrical portion 231 can apply a driving force (or expansion force) toward the groove peripheral wall 12 to the inner peripheral surface of the support portion 31 by the pressing action, so that the sealing plug 10 can be tightly attached to the wall of the liquid pouring hole 13.

In addition, the first tapered portion 232 is provided at one side of the end surface of the cylindrical portion 231, and the specific configuration of the plunger 23 may make the assembly process of the sealing member 100 smoother. Specifically, during the assembly process, the first tapered portion 232 may be directed toward the opening of the support portion 31, and since the first tapered portion 232 is substantially configured to be tapered, the first tapered portion 232 smoothly enters the support portion 31, avoiding the first tapered portion 232 from structurally interfering with the open end of the support 30. The support member 30 assembled with the stopper 23 is inserted into the mounting groove 11 and is pressed downwards, the bottom surface of the cylindrical portion 231 can be abutted to the bottom surface of the mounting groove 11, the cylindrical portion 231 can be gradually pressed into the opening end of the support member 30, the cylindrical portion 231 presses the sealing plug 10 after expanding the opening end of the support member 30, the sealing plug 10 is tightly attached to the hole wall of the liquid injection hole 13, and a good sealing effect is achieved.

In some embodiments where the driving member 20 is the stopper 23, as shown in fig. 8, the supporting member 30 may further include an end wall 32 disposed at an end of the cylinder body away from the mounting groove 11, and a side of the first tapered portion 232 away from the cylindrical portion 231 is provided with a limiting portion 36, and the limiting portion 36 may abut against the end wall 32.

Therefore, in the assembling process of the sealing element 100, after the supporting element 30 is extruded to the right position, the limiting part 36 is abutted between the end wall 32 and the first conical part 232, so that the situation that the plug 23 is separated from the end part of the supporting part 31 close to the groove bottom surface of the mounting groove 11 due to excessive extrusion can be avoided, the situation that the plug 23 cannot be kept at the position of the opening end of the supporting element 30 is avoided, and the sealing effect of the sealing element 100 is ensured.

In some specific embodiments, the position-limiting portion 36 may be configured as a cylinder, which has a simple structure, is convenient for processing a workpiece, and can achieve a good supporting and position-limiting effect, and is stable and reliable in operation.

In some embodiments where the support 30 includes the end wall 32, as shown in fig. 9, the end wall 32 may have a through hole, the position-limiting portion 36 may extend into the support portion 31, and the position-limiting portion 36 may be inserted into the through hole. In some specific embodiments, the supporting portion 31 may be a cylinder, and the shape of the cylinder is regular, so as to facilitate the processing of the product. The supporting member 30 further includes an end wall 32 disposed at one end of the barrel, and a side of the first tapered portion 232 facing the end wall 32 is provided with a limiting portion 36, for example, the limiting portion 36 may be configured as a cylinder. The stopper 36 may be inserted through the end wall 32.

Specifically, during the process of pressing the support 30, since the position-limiting portion 36 penetrates the end wall 32, the position-limiting portion 26 can protrude out of the end wall 32 along with the pressing action on the support 30, for example, in some embodiments where the position-limiting portion 36 is a cylinder, the length of the position-limiting portion 36 can be reasonably set, for example, after the support 36 is installed in place, the position-limiting portion 36 protrudes out of the end wall 32 by a predetermined value or is flush with the surface of the end wall 32, so that it can be known whether the pressing action on the support 30 should be continued, and whether the plug 23 is already installed in place in the support 31. In other words, in this embodiment, the limiting portion 36 can serve as an indicator to prevent the support 30 from being pressed too much to cause the plug 23 to be separated from the opening end of the support portion 31, thereby ensuring the sealing effect of the sealing member 100.

And in embodiments where the driver 20 is a chock 23, as shown in fig. 10, the chock 23 further includes a second tapered portion 233. Specifically, the second tapered portion 233 may be provided on a side away from the first tapered portion 232, and the outer diameter of the second tapered portion 233 decreases in a direction away from the cylindrical portion 231, in other words, the second tapered portion 233 has the largest outer diameter at an end close to the cylindrical portion 231 and the smallest outer diameter at an end close to the groove bottom surface of the mounting groove 11.

Specifically, after the plug 23 is squeezed into the opening end of the support 30, the edge of the opening end of the support 30 is reversely squeezed by the sealing plug 10 to bend and wrap the plug 23 inwards (towards the direction of the central line of the support 30), so that creep (reverse rebound) of the support 30 after a long time is avoided, the plug 23 is prevented from sliding out of the opening end of the support 30 to cause sealing failure, and the sealing reliability of the sealing element 100 is effectively improved.

In some embodiments, as shown in fig. 2 and 4, the support 30 may further include an end wall 32 provided at an end of the cylinder away from the mounting groove 11. For example, the end wall 32 may be a circular sheet structure or the like.

Moreover, the cylinder body, the end wall 32 and the sealing plug 10 can cooperate to define a sealing cavity 301, that is, the end wall 32 and the cylinder body can seal the notch of the installation groove 11 so that the space in the installation groove 11 forms the sealing cavity 301; that is, the end wall 32 seals one end of the cylinder and the bottom wall of the mounting groove 11 of the sealing plug 10 seals the other end of the cylinder to form the sealed cavity 301. The driver 20 may be located within the sealed cavity 301. Therefore, the driving member 20 can be isolated from the external environment in the sealing cavity 301, which is beneficial to improving the working stability of the driving member 20, for example, in some embodiments where the driving member 20 is an annular spring, the sealing cavity 301 can effectively prevent the annular spring 22 from contacting water and oxygen, prevent the annular spring 22 from rusting, and is beneficial to improving the service life of the annular spring 22.

In order to be able to monitor the appearance of the driving member 20 in real time, in some embodiments, as shown in fig. 2, the supporting portion 31 may be configured as a cylinder, and one end of the cylinder away from the bottom wall of the mounting groove 11 is open. Thus, the appearance of the driver 20 can be visually observed through the open end of the cylinder. For example, when the driving member 20 is deformed and rusted, the driving member 20 can be replaced in time to reduce the potential safety hazard. And facilitates a compact structural design of the seal 100.

Alternatively, in other embodiments, as shown in fig. 3, the supporting member 30 may further include an end wall 32 disposed at one end of the supporting portion 31, the end wall 32 and the sealing plug 10 cooperate to define a mounting cavity 302, and the driving member 20 may be located in the mounting cavity 302. In order to visually observe the driver 20 in the mounting cavity 302, the support portion 31 may be provided with an opening 34 communicating with the mounting cavity 302, and for example, a notch may be provided in the support portion 31, so that the appearance of the driver 20 can be visually observed. Alternatively, the end wall 32 and the supporting portion 31 are both provided with the opening 34 communicated with the mounting cavity 302, so that the area of the opening 34 can be larger, and the driving member 20 can be observed more conveniently.

In some embodiments where the support member 30 includes an end wall 32 disposed at one end of the support member 31, as shown in fig. 6 and 7, the support member 31 may be a half cylinder formed by cutting a cylinder into half along an axis, the end wall 32 may be a semicircular plate formed by cutting a circular plate into half along an axis, and the cut-away area may be regarded as an opening 34 for observing the driving member 20, and in this way, the processing manner of the opening 34 may be made simpler, for example, two support members 30 may be obtained by cutting a complete cylinder and a circular plate which are connected together, which is beneficial for reducing the production cost.

In order to make the structural design of the sealing member 100 more compact and more reliable, in some embodiments, as shown in fig. 3, 5, 7-10, the inner circumferential surface of the groove circumferential wall 12 may be provided with an inner protrusion 14, for example, the inner protrusion 14 may be configured as an annular protrusion structure. The outer circumferential surface of the support portion 31 may be provided with an outer protrusion 33, for example, the outer protrusion 33 may be configured as an annular protrusion structure. The outer convex part 33 is clamped on one side of the inner convex part 14 far away from the notch of the mounting groove 11. Specifically, after the supporting member 30 is mounted on the sealing plug 10, the inner protrusion 14 abuts against the outer protrusion 33, so that the supporting member 30 is limited from being displaced toward the opening of the mounting groove 11, the mounting state of the supporting member 30 is more stable, the supporting member 30 is prevented from coming off from the sealing plug 10, and the sealing member 100 has higher operational reliability. Moreover, the displacement of the supporting member 30 can be limited by the inner convex portion 14 and the outer convex portion 33, which is beneficial to making the structural design of the sealing member 100 more concise.

In some embodiments, as shown in fig. 3-5 and 8-10, a portion of the supporting member 30 may be located outside the installation groove 11, and this portion may serve as an operation end, through which the operation of detaching and installing the sealing member 100 may be facilitated when detaching and installing the sealing member 100. For example, in some embodiments where the supporting member 30 includes a supporting portion 30 and an end wall 32, as shown in fig. 3-5, a portion of the supporting portion 30 and the entire end wall 32 are located outside the mounting groove 11 and can be used as an operating end for disassembling and assembling the sealing member 100, thereby facilitating the disassembling and assembling of the sealing member 100 and facilitating the structural simplicity of the sealing member 100.

In some embodiments, the supporting member 30 may be made of metal, for example, the supporting member 30 may be made of aluminum material, copper material, etc. Specifically, the metal material is not easily damaged during use, which is beneficial to improving the service life of the supporting member 30. Moreover, by reasonably setting the thickness of the supporting piece 30, the supporting piece 30 can deform to transmit the driving force, so that the peripheral surface of the groove peripheral wall 12 is tightly attached to the hole wall of the liquid injection hole 13, and a good sealing effect is realized.

In some embodiments, the sealing plug 10 is an elastic member, the hardness of the elastic member is relatively low, and the elastic member can deform after receiving a driving force, so that the outer peripheral surface of the groove peripheral wall 12 can be tightly abutted with the wall of the injection hole 13. For example, the elastic member may be made of rubber. In addition, the sealing plug 10 can generate corresponding deformation according to the magnitude of the driving force of the driving part 20, any area of the groove peripheral wall 12 can be abutted against the hole wall of the liquid injection hole 13, the electrolyte leakage is effectively avoided, and the realized sealing effect is better.

The electric equipment according to the embodiment of the invention can comprise an electric equipment body and the energy storage device according to the embodiment of the invention, and the energy storage device can be used for supplying power to the electric equipment body so as to ensure that the electric equipment body can work normally.

Because the energy storage device according to the embodiment of the invention has the beneficial technical effects, according to the electric equipment according to the embodiment of the invention, the sealing plug 10 is provided with the installation groove 11, the outer peripheral surface of the groove peripheral wall 12 of the installation groove 11 is abutted against the hole wall of the liquid injection hole 13, the liquid injection hole 13 can be sealed, and the sealing element 100 can be taken out from the liquid injection hole 13 when liquid injection is needed, so that the liquid injection operation is very convenient, and electrolyte can be supplemented in time to improve the utilization rate of the energy storage device. In addition, driving force towards annotating liquid hole 13 pore wall can be applyed to driving piece 20 to groove perisporium 12, makes the butt between sealing plug 10 and the pore wall of annotating liquid hole 13 more inseparable, has greatly reduced the risk that electrolyte leaked or leaked gas, and the sealed effect that can realize is better, is favorable to making energy memory's electrochemical performance more stable, and then ensures the power consumption stability of consumer. Other constructions and operations of the seal 100, the energy storage device, and the electrical device according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

In the description herein, references to the description of the terms "embodiment," "particular embodiment," "example," etc., mean 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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the 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

1. The utility model provides a sealing member of liquid filling hole of energy memory which characterized in that includes:

the sealing plug is provided with an installation groove, and the peripheral surface of the circumferential wall of the installation groove is abutted against the hole wall of the liquid injection hole so as to seal the liquid injection hole;

and the driving piece is positioned in the mounting groove and is used for applying a driving force towards the wall of the liquid injection hole to the circumferential wall of the groove.

2. The sealing member for the liquid filling hole of the energy storage device according to claim 1, further comprising:

the supporting part is a cylindrical body and is positioned between the groove peripheral wall and the driving part, the driving part abuts against the inner circumferential surface of the supporting part, and the outer circumferential surface of the supporting part abuts against the inner circumferential surface of the groove peripheral wall.

3. The sealing member for the charge hole of the energy storage device according to claim 2, wherein the driving member is an annular spring having a plurality of coils extending helically around an annular center line and connected end to end,

the supporting part is close to the tip of mounting groove tank bottom surface is equipped with a plurality of open slots, and is a plurality of the open slot is followed the circumference interval distribution of supporting part.

4. The sealing element for the liquid injection hole of the energy storage device as claimed in claim 3, wherein the plurality of open slots include a first open slot and a second open slot which are arranged at intervals, the length of the first open slot is greater than that of the second open slot in the axial direction of the support portion, and the second open slot is used for being clamped with the spring wire.

5. The sealing element for the liquid injection hole of the energy storage device as claimed in claim 4, wherein each second opening groove is located between two adjacent first opening grooves.

6. The sealing member for the liquid inlet of the energy storage device according to claim 3, wherein a positioning groove is provided on an inner peripheral surface of an end portion of the support portion near a bottom surface of the mounting groove, the positioning groove is recessed toward a wall side of the liquid inlet, and an outer edge of the annular spring abuts against the positioning groove.

7. The sealing member for the liquid filling hole of the energy storage device according to claim 3, wherein the annular spring is compressed when being assembled in the mounting groove.

8. The sealing member for the liquid filling hole of the energy storage device according to claim 2, wherein the driving member is a stopper, the stopper comprises a cylindrical portion and a first tapered portion, the outer diameter of the cylindrical portion is larger than the inner diameter of the end portion of the supporting portion close to the bottom surface of the mounting groove, and the first tapered portion is arranged on one side of the end surface of the cylindrical portion.

9. The sealing member for the injection hole of the energy storage device according to claim 8, wherein the supporting member further comprises an end wall disposed at an end of the barrel away from the mounting groove, a limiting portion is disposed at a side of the first tapered portion away from the cylindrical portion, and the limiting portion extends into the supporting portion and abuts against the end wall.

10. The sealing member for the liquid filling hole of the energy storage device according to claim 9, wherein the end wall has a through hole, and the limiting portion extends into the supporting portion and is disposed in the through hole.

11. The sealing member for the liquid filling hole of the energy storage device as defined in claim 8, wherein the plug further comprises a second tapered portion, the second tapered portion is disposed on a side of the cylindrical portion away from the first tapered portion, and an outer diameter of the second tapered portion decreases in a direction away from the cylindrical portion.

12. The sealing member for the charging hole of the energy storage device according to claim 2, wherein the supporting member further comprises an end wall disposed at an end of the cylinder away from the mounting groove, the cylinder, the end wall and the sealing plug cooperate to define a sealing cavity, and the driving member is disposed in the sealing cavity.

13. The sealing member for the charging hole of the energy storage device according to claim 2, wherein the end wall of the support member is located outside the mounting groove.

14. The sealing member for the liquid filling hole of the energy storage device according to claim 2, wherein the supporting member is made of metal.

15. The sealing element for the liquid filling hole of the energy storage device according to claim 1, wherein the sealing plug is an elastic element.

16. The sealing member for the injection hole of the energy storage device according to claim 2, wherein an inner circumferential surface of the groove circumferential wall is provided with an inner protrusion, and an outer circumferential surface of the support portion is provided with an outer protrusion, and the outer protrusion is engaged with a side of the inner protrusion away from the notch of the mounting groove.

17. An energy storage device, comprising:

the shell is provided with a liquid injection hole;

the sealing element of the liquid filling hole of the energy storage device according to any one of claims 1 to 16, wherein the sealing element is detachably inserted into the liquid filling hole.

18. An electrical device, comprising: an electric equipment body; the energy storage device of claim 17, wherein the energy storage device is configured to supply power to the powered device body.