阅读说明：本技术 一种用于钛酸锂电池的防内部胀气的盖板结构 (A apron structure that is used for preventing inside flatulence of lithium titanate battery ) 是由 戴星宇 于 2020-12-23 设计创作，主要内容包括：本发明提供一种用于钛酸锂电池的防内部胀气的盖板结构,包括：盖片；固定环,所述固定环固定于所述盖片的顶部；外盖,所述外盖螺纹连接于所述固定环的外部,所述外盖的周侧面开设有排气孔；通气孔,所述通气孔开设与所述盖片的中间且位于固定环的内侧。本发明提供的用于钛酸锂电池的防内部胀气的盖板结构具有通过电池内部出现胀气时,通过上顶活塞体,活塞体通过带动组件带动抓动管转动同时带动柱形密封块转动,使两侧的凹槽部与排气孔对应,此时电池内部的气体排出,当排出后通过发条作用,使密封活塞与柱形密封块回至原位置,进行密封,可以有效的排出的电池内部的气体,提高电池的使用寿命,更好的保持电池的使用性能。(The invention provides a cover plate structure for preventing internal flatulence of a lithium titanate battery, which comprises: a cover sheet; the fixing ring is fixed at the top of the cover plate; the outer cover is in threaded connection with the outside of the fixing ring, and the peripheral side surface of the outer cover is provided with an exhaust hole; the air vent is arranged in the middle of the cover plate and positioned on the inner side of the fixing ring. The cover plate structure for preventing internal flatulence of the lithium titanate battery provided by the invention has the advantages that when flatulence occurs in the battery, the piston body is pushed up by the upper piston body, the piston body drives the grab pipe to rotate through the driving assembly and simultaneously drives the cylindrical sealing block to rotate, the groove parts at two sides correspond to the exhaust holes, at the moment, gas in the battery is exhausted, and after the gas is exhausted, the sealing piston and the cylindrical sealing block return to the original position through the action of the clockwork spring to be sealed, so that the gas in the battery can be effectively exhausted, the service life of the battery is prolonged, and the service performance of the battery is better maintained.)

1. A prevent apron structure of inside flatulence for lithium titanate battery which characterized in that includes:

a cover sheet;

the fixing ring is fixed at the top of the cover plate;

the outer cover is in threaded connection with the outside of the fixing ring, and the peripheral side surface of the outer cover is provided with an exhaust hole;

the air vent is arranged in the middle of the cover plate and positioned on the inner side of the fixing ring, and a sealing piston is arranged inside the air vent;

the positioning pipe is fixed at the top of the sealing piston;

the positioning device comprises a positioning tube, a rotating tube, a driving assembly and a sliding frame, wherein the rotating tube is fixed on the upper side of the positioning tube through the driving assembly, the driving assembly comprises a supporting column and the sliding frame, the supporting column is fixed at the bottom of the inner wall of the positioning tube, the sliding frame is fixed on one side of the inner wall of the rotating tube, an I-shaped sliding piece is connected onto the sliding frame in a sliding mode, spherical connecting pieces are arranged on the bottom plate of the I-shaped sliding piece and the top of the supporting column, and a push rod is;

the sealing adjusting piece is fixed at the top of the rotating pipe and comprises a cylindrical sealing block, grooves are formed in two sides of the cylindrical sealing block, and pulleys are symmetrically arranged on two sides of the cylindrical sealing block and on one side of the groove;

and the spring is fixed between the outer cover and the rotating pipe.

2. The internal swelling prevention cover plate structure for a lithium titanate battery according to claim 1, wherein one end of the clockwork spring located at the outside is fixed to the inner wall of the outer cover, and one end of the clockwork spring located at the inside is fixed to one side of the surface of the rotating tube.

3. The internal flatulence preventing cover plate structure for the lithium titanate battery of claim 1, wherein the sealing piston comprises a piston body, an annular groove is formed in the surface of the piston body, and a sealing ring is bonded to the surface of the piston body.

4. The internal swelling prevention cap plate structure for a lithium titanate battery according to claim 1, wherein said vent hole comprises a reverse truncated cone hole, an inner surface of which is provided with an annular protrusion.

5. The internal flatulence preventing cover plate structure for a lithium titanate battery as defined in claim 1, wherein a support block is fixedly connected to an inner surface of the outer cover surface, and the support block is provided with a plurality of through holes.

6. The internal flatulence preventing cover plate structure for a lithium titanate battery of claim 1, wherein both sides of the top of the support block are fixedly connected with mounting blocks, and the opposite sides of the two mounting blocks are fixedly connected with magnets.

7. The internal swelling prevention cover plate structure for a lithium titanate battery as claimed in claim 6, wherein iron pieces are fixedly connected to both sides of the surface of the rotating tube, and the two iron pieces correspond to the two magnets in position.

8. The internal flatulence preventing cover plate structure for the lithium titanate battery as recited in claim 1, wherein a sliding tube is fixedly connected to a middle of a top portion of an inner wall of the outer cover, a cylindrical hole is formed in a middle of the sealing piston, and a bottom end of the sliding tube extends into the cylindrical hole.

9. The internal flatulence preventing cover plate structure for a lithium titanate battery of claim 8, wherein the sliding tube comprises a tube body, wherein a plurality of first bar-shaped holes are opened on a lower side of a surface of the tube body, and a plurality of second bar-shaped holes are opened on an upper side of the surface of the tube body.

10. The internal flatulence prevention cover plate structure for a lithium titanate battery as defined in claim 9, wherein an elastic member is sleeved on the surface of the slide tube and on the upper side of the sealing piston, and a rubber ring is bonded on the inner surface of the cylindrical hole.

Technical Field

The invention relates to the field of lithium titanate batteries, in particular to a cover plate structure for preventing internal flatulence of a lithium titanate battery.

Background

The lithium titanate battery is used as a negative electrode material of the lithium ion battery, namely lithium titanate, can form a 2.4V or 1.9V lithium ion secondary battery together with lithium manganate, ternary materials or lithium iron phosphate and other positive electrode materials, and can also be used as a positive electrode to form a 1.5V lithium secondary battery together with a metallic lithium or lithium alloy negative electrode.

At present, the tai sour lithium battery is easy to generate internal flatulence in the use process, the external deformation of the battery is caused, and the use performance of the battery is reduced.

Therefore, it is necessary to provide a cover plate structure for lithium titanate battery that is capable of preventing internal swelling to solve the above-mentioned problems.

Disclosure of Invention

The invention provides a cover plate structure for preventing internal flatulence of a lithium titanate battery, which solves the problems that an explosion-proof valve is added in the conventional battery structure, when gas reaches a certain degree, the explosion-proof valve is exploded to release the gas, so that potential safety hazards are reduced, but the service performance and the service life of the battery are greatly reduced.

In order to solve the above technical problems, the present invention provides a cover plate structure for preventing internal swelling of a lithium titanate battery, including:

a cover sheet;

the fixing ring is fixed at the top of the cover plate;

the outer cover is in threaded connection with the outside of the fixing ring, and the peripheral side surface of the outer cover is provided with an exhaust hole;

the air vent is arranged in the middle of the cover plate and positioned on the inner side of the fixing ring, and a sealing piston is arranged inside the air vent;

the positioning pipe is fixed at the top of the sealing piston;

the positioning device comprises a positioning tube, a rotating tube, a driving assembly and a sliding frame, wherein the rotating tube is fixed on the upper side of the positioning tube through the driving assembly, the driving assembly comprises a supporting column and the sliding frame, the supporting column is fixed at the bottom of the inner wall of the positioning tube, the sliding frame is fixed on one side of the inner wall of the rotating tube, an I-shaped sliding piece is connected onto the sliding frame in a sliding mode, spherical connecting pieces are arranged on the bottom plate of the I-shaped sliding piece and the top of the supporting column, and a push rod is;

the sealing adjusting piece is fixed at the top of the rotating pipe and comprises a cylindrical sealing block, grooves are formed in two sides of the cylindrical sealing block, and pulleys are symmetrically arranged on two sides of the cylindrical sealing block and on one side of the groove;

and the spring is fixed between the outer cover and the rotating pipe.

Preferably, one end of the spiral power spring positioned at the outer side is fixed on the inner wall of the outer cover, and one end of the spiral power spring positioned at the inner side is fixed on one side of the surface of the rotating pipe.

Through setting up the clockwork spring, carry on spacingly through elastic potential energy to the rotating tube, when exerting the power rotation to the rotating tube, drive the clockwork spring shrink, when the power cancellation of exerting the power to the initiative pipe, the rotating tube can resume to the original position.

Preferably, the sealing piston comprises a piston body, an annular groove is formed in the surface of the piston body, and a sealing ring is bonded to the surface of the piston body.

And the sealing performance between the sealing piston and the vent hole is ensured by bonding the sealing cavity.

Preferably, the vent hole comprises a reverse circular truncated cone hole, and an inner surface of the reverse circular truncated cone hole is provided with an annular convex part.

The contact area of the sealing piston and the inner wall of the same air hole can be increased by arranging the annular bulge to be matched with the annular groove on the surface of the piston body

Preferably, the inner surface of the outer cover surface is fixedly connected with a supporting block, and a plurality of through holes are formed in the supporting block.

The supporting shoe can fix spacing support to the clockwork spring.

Preferably, the two sides of the top of the supporting block are fixedly connected with mounting blocks, and the opposite sides of the two mounting blocks are fixedly connected with magnets.

Preferably, both sides of the surface of the rotating pipe are fixedly connected with iron sheets, and the two iron sheets correspond to the two magnets in position.

The limiting of the rotating pipe can be realized by the action of magnetic adsorption force of the magnet and the iron sheet instead of a spring.

Preferably, the middle of the top of the inner wall of the outer cover is fixedly connected with a sliding pipe, a cylindrical hole is formed in the middle of the sealing piston, and the bottom end of the sliding pipe extends into the cylindrical hole.

Preferably, the slide pipe includes the body, a plurality of first bar holes have been seted up to the downside on body surface, a plurality of second bar holes have been seted up to the upside on body surface.

Through seting up first bar hole and second bar hole, move up the back on the sealing piston, the gas portion gets into the slide pipe through first bar hole then flows out through second bar hole and discharges through the exhaust hole, increases gaseous exhaust speed.

Preferably, the surface of the sliding pipe and the upper side of the sealing piston are sleeved with an elastic piece, and the inner surface of the cylindrical hole is bonded with a rubber ring.

Compared with the related art, the cover plate structure for preventing internal flatulence of the lithium titanate battery provided by the invention has the following beneficial effects:

the invention provides a cover plate structure for preventing internal flatulence of a lithium titanate battery, when flatulence occurs in the battery, a piston body is pushed up by an upper ejection component, the piston body drives a grab pipe to rotate through a driving component and simultaneously drives a cylindrical sealing block to rotate, groove parts at two sides correspond to exhaust holes, gas in the battery is exhausted at the moment, and after the gas is exhausted, the sealing piston and the cylindrical sealing block return to the original position through the action of a clockwork spring to be sealed, so that the gas in the battery can be effectively exhausted, the service life of the battery is prolonged, and the service performance of the battery is better maintained;

and through the cylindricality sealed piece and the sealed piston dual seal, and the surface of piston body has seted up a plurality of annular grooves, and the annular bellying on the cooperation air vent increases sealed area of contact, can improve holistic sealed, the performance when guaranteeing the battery use.

Drawings

Fig. 1 is a schematic structural view of a first embodiment of an internal-swelling-preventing cap plate structure for a lithium titanate battery according to the present invention;

FIG. 2 is a schematic structural diagram of the driving assembly shown in FIG. 1;

FIG. 3 is a top view of the positioning tube shown in FIG. 1;

FIG. 4 is a schematic view of the outer part of FIG. 1;

FIG. 5 is a top view of the sealing piston shown in FIG. 1;

FIG. 6 is a top view of the ensemble shown in FIG. 1;

fig. 7 is a schematic structural view of a second embodiment of an internal-swelling-preventing cap plate structure for a lithium titanate battery according to the present invention;

fig. 8 is a schematic structural view of a third embodiment of an internal-swelling-preventing cap plate structure for a lithium titanate battery according to the present invention;

fig. 9 is an external structural view of the slide pipe shown in fig. 8.

Reference numbers in the figures: 1a, a cover plate, 2a, a fixed ring, 3a, an outer cover, 4a, a vent hole, 41a, a circular truncated cone hole, 42a, an annular bulge, 5a, a sealing piston, 51a, a piston body, 52a, an annular groove, 53a, a sealing ring, 6a, a positioning tube, 7a, a driving component, 71a, a supporting column, 72a, a sliding frame, 73a, an I-shaped sliding piece, 74a, a spherical connecting piece, 75a, a pushing rod, 8a, a rotating tube, 9a, a sealing adjusting piece, 91a, a cylindrical sealing block, 92a, a groove, 93a, a pulley, 94a sealing rubber block, 10a, a spring, 11a, an exhaust hole, 12a, a supporting block, 13a, a magnet, 14a, an iron sheet, 15a, a sliding tube, 151a, a tube body, 152a, a first strip hole, 153a, a second strip hole, 17a, a column hole, 16a, an elastic piece, 18a, a rubber ring, 19a, And (7) installing the block.

Detailed Description

The invention is further described with reference to the following figures and embodiments.

Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, wherein fig. 1 is a schematic structural diagram of a first embodiment of a cover plate structure for preventing internal flatulence of a lithium titanate battery provided by the present invention; fig. 2 is a schematic structural diagram of the driving assembly 7a shown in fig. 1; FIG. 3 is a top view of the positioning tube 6a shown in FIG. 1; FIG. 4 is a schematic view of the outer part of FIG. 1; fig. 5 is a plan view of the sealing piston 5a shown in fig. 1, and fig. 6 is a plan view of the entirety shown in fig. 1. A apron structure that is used for preventing inside flatulence of lithium titanate battery includes:

a cover sheet 1 a;

the fixing ring 2a is fixed at the top of the cover plate 1 a;

the outer cover 3a is connected to the outside of the fixing ring 2a in a threaded manner, and the peripheral side surface of the outer cover 3a is provided with an exhaust hole 11 a;

the ventilating hole 4a is arranged in the middle of the cover plate 1a and is positioned on the inner side of the fixing ring 2a, and a sealing piston 5a is arranged in the ventilating hole 4 a;

a positioning tube 6a, wherein the positioning tube 6a is fixed at the top of the sealing piston 5 a;

the rotating pipe 8a is fixed on the upper side of the positioning pipe 6a through a driving assembly 7a, the driving assembly 7a comprises a supporting column 71a and a sliding frame 72a, the supporting column 71a is fixed at the bottom of the inner wall of the positioning pipe 6a, the sliding frame 72a is fixed on one side of the inner wall of the rotating pipe 8a, an I-shaped sliding piece 73a is connected onto the sliding frame 72a in a sliding manner, spherical connecting pieces 74a are arranged on the bottom plate of the I-shaped sliding piece 73a and the top of the supporting column 71a, and a push rod 75a is fixedly connected between the two spherical connecting pieces 74 a;

the sealing adjusting piece 9a is fixed at the top of the rotating pipe 8a, the sealing adjusting piece 9a comprises a cylindrical sealing block 91a, grooves 92a are formed in two sides of the cylindrical sealing block 91a, and pulleys 93a are symmetrically arranged on two sides of the cylindrical sealing block 91a and on one side of the grooves 92 a;

and a spring 10a, wherein the spring 10a is fixed between the outer cover 3a and the rotating pipe 8 a.

The sealing rubber blocks 94a are adhered between the grooves 92a and the pulleys 93a on both sides of the cylindrical sealing block 91a, the sealing piston 5a can rotate more smoothly by arranging the pulleys 93a, and the exhaust holes 11a are symmetrically arranged on both sides of the outer cover 3 a.

One end of the spiral spring 10a located at the outer side is fixed on the inner wall of the outer cover 3a, and one end of the spiral spring 10a located at the inner side is fixed on one side of the surface of the rotating pipe 8 a.

The fixing mode is welding, and the fixing mode can be fixed through screws and the like.

The sealing piston 5a comprises a piston body 51a, an annular groove 52a is formed on the surface of the piston body 51a, and a sealing ring 53a is bonded on the surface of the piston body 51 a.

The annular grooves 52a are provided in plural number, not less than three.

The vent hole 4a includes a reverse truncated cone hole 41a, and an inner surface of the reverse truncated cone hole 41a is provided with an annular boss 42 a.

The number of the annular projected pieces corresponds to the annular groove 52 a.

The inner surface of the outer cover 3a surface is fixedly connected with a supporting block 12a, and the supporting block 12a is provided with a plurality of through holes.

Supporting shoe 12a is the circular port of seting up with rotating-tube 8a adaptation in the middle of the circular block, and supporting shoe 12a passes through threaded connection at the internal surface of enclosing cover 3a, and supporting shoe 12a surface is provided with the external screw thread, and the internal surface of enclosing cover 3a is provided with the corresponding internal thread.

The working principle of the cover plate structure for preventing internal flatulence of the lithium titanate battery provided by the invention is as follows:

the cover plate 1a is sealed with a top plate of a battery in a welding way, when the inside of the battery expands, gas upwards jacks up a sealing piston 5a, the sealing piston 5a upwards pushes a positioning tube 6a, the positioning tube 6a drives a supporting column 71a to upwards move, the supporting column 71a pushes an I-shaped sliding piece 73a through a pushing rod 75a, the I-shaped sliding piece 73a slides along a sliding frame 72a and pushes a sliding frame 72a, the sliding frame 72a pushes a rotating tube 8a to rotate, the rotating tube 8a drives the sealing piston 5a to rotate, and when the rotating angle is larger than thirty degrees, annular grooves 52a on two sides of a piston body 51a correspond to exhaust holes 11a on the surface of an outer cover 3a at the moment;

and at this time, the piston block moves up and leaves the vent hole 4a, and at this time, the gas inside the battery is discharged to the outside through the vent hole 4a and the exhaust hole 11 a;

when the rotating pipe 8a rotates, one end of the inner side of the clockwork spring 10a is pulled to enable the clockwork spring 10a to contract, after gas is exhausted, the rotating pipe 8a is driven to return to the original position under the action of elastic potential energy of the clockwork spring 10a, meanwhile, the positioning pipe 6a is pushed downwards through the pushing rod 75a, the positioning pipe 6a drives the piston block to seal the vent hole 4a, the piston body 51a returns to the original position, the part of the groove 92a is staggered with the exhaust hole 11a, and the position provided with the sealing rubber block 94a is sealed corresponding to the exhaust hole 11 a;

and the outer cover 3a is connected to the cover plate 1a by screw threads, and can be disassembled for repair.

Compared with the related art, the cover plate structure for preventing internal flatulence of the lithium titanate battery provided by the invention has the following beneficial effects:

when the interior of the battery expands, the piston body 51a is pushed up, the piston body 51a drives the grab tube to rotate and simultaneously drives the cylindrical sealing block 91a to rotate through the driving assembly 7a, so that the grooves 92a on the two sides correspond to the exhaust holes 11a, gas in the interior of the battery is exhausted at the moment, and after the gas is exhausted, the sealing piston 5a and the cylindrical sealing block 91a return to the original position through the action of the spiral spring 10a to be sealed, so that the gas in the interior of the battery can be effectively exhausted, the service life of the battery is prolonged, and the service performance of the battery is better maintained;

and through the double sealing of cylindricality sealing block 91a and sealing piston 5a, and the surface of piston body 51a is seted up a plurality of annular grooves 52a, cooperates the annular bulge 42a on the air vent 4a, increases sealed area of contact, can improve holistic sealed, the performance when guaranteeing the battery use.

Second embodiment

Referring to fig. 7, a second embodiment of the present application provides another cover plate structure for preventing internal flatulence of a lithium titanate battery based on the cover plate structure for preventing internal flatulence of a lithium titanate battery provided by the first embodiment of the present application. The second embodiment is only the preferred mode of the first embodiment, and the implementation of the second embodiment does not affect the implementation of the first embodiment alone.

Specifically, the difference that is used for lithium titanate battery to prevent apron structure of inside flatulence that the second embodiment of this application provided lies in, is used for lithium titanate battery to prevent the apron structure of inside flatulence, the equal fixedly connected with installation piece 19a in both sides at supporting shoe 12a top, two the equal fixedly connected with magnet 13a in the opposite one side of installation piece 19 a.

And iron sheets 14a are fixedly connected to two sides of the surface of the rotating pipe 8a, and the two iron sheets 14a correspond to the two magnets 13a in position.

The iron sheet 14a is matched with the magnetic sheet, so that the spring 10a can be replaced to limit the rotating pipe 8a, and the influence on the using effect of the spring 10a due to deformation and the like is avoided.

Third embodiment

Referring to fig. 8 and 9 in combination, a third embodiment of the present application provides another cover plate structure for preventing internal flatulence of a lithium titanate battery based on the cover plate structure for preventing internal flatulence of a lithium titanate battery provided by the first embodiment of the present application. The third embodiment is only the preferred mode of the first embodiment, and the implementation of the second embodiment does not affect the implementation of the first embodiment alone.

Specifically, the difference that is used for lithium titanate battery to prevent apron structure of inside flatulence that the third embodiment of this application provided lies in, is used for lithium titanate battery to prevent the apron structure of inside flatulence, the centre fixedly connected with slide tube 15a at the top of enclosing cover 3a inner wall, cylindrical hole 17a has been seted up to the centre of sealing piston 5a, the bottom of slide tube 15a extends to inside cylindrical hole 17 a.

The slide tube 15a includes a tube body 151a, a plurality of first bar holes 152a are opened on a lower side of a surface of the tube body 151a, and a plurality of second bar holes 153a are opened on an upper side of the surface of the tube body 151 a.

Four exhaust holes 11a are uniformly arranged on the surface of the outer cover 3a in an array, and four first strip-shaped holes 152a and four second strip-shaped holes 153a are arranged;

when the battery is inflated, the piston body 51a is pushed up and the elastic piece 16a is compressed, so that the sealing piston 5a is separated from the vent hole 4a, and at the moment, the air flow can be discharged through the vent hole 11a, meanwhile, the air can enter through the first strip-shaped hole 152a and flow out through the second strip-shaped hole 153a, and finally, the air is discharged through the vent hole 11a, so that the exhaust position is increased, and the exhaust speed is increased.

An elastic piece 16a is sleeved on the surface of the sliding tube 15a and positioned on the upper side of the sealing piston 5a, and a rubber ring 18a is adhered to the inner surface of the cylindrical hole 17 a.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.