CN211295237U

CN211295237U - Novel explosion-proof lithium cell

Info

Publication number: CN211295237U
Application number: CN202020244260.4U
Authority: CN
Inventors: 陆海珍
Original assignee: Nanjing Rongke New Energy Co ltd
Current assignee: Nanjing Rongke New Energy Co ltd
Priority date: 2020-03-03
Filing date: 2020-03-03
Publication date: 2020-08-18
Anticipated expiration: 2030-03-03

Abstract

The utility model relates to the technical field of battery explosion prevention, in particular to a novel explosion-proof lithium battery, which comprises a protective shell, wherein a square groove is formed in the inner side of the protective shell, a lithium battery inner core is fixedly connected with the square groove of the protective shell, two groups of circular through holes are formed in the outer side of the protective shell, a connecting block is fixedly connected with the circular through hole of the protective shell, a binding post is fixedly connected with the outer side of the connecting block, the binding post is fixedly connected with the lithium battery inner core, and a circular through hole is formed in the top of the protective shell; the utility model discloses a blast pipe that sets up and the gas vent of setting can carry out the adaptation with the closing plate when the atmospheric pressure in lithium battery inner core rises, are favorable to lithium battery inner core's inside and outside atmospheric pressure balanced, have avoided the risk of battery explosion, through the sealed pad that sets up and the protecting sheathing who sets up, can make that protecting sheathing can be better makes up, is favorable to the use of battery.

Description

Novel explosion-proof lithium cell

Technical Field

The utility model relates to a battery explosion-proof technical field specifically is a novel explosion-proof lithium cell.

Background

Lithium batteries can be broadly classified into two types: lithium metal batteries and lithium ion batteries. Lithium ion batteries do not contain lithium in the metallic state and are rechargeable. In general, lithium metal batteries use manganese dioxide as a positive electrode material, lithium metal or an alloy metal thereof as a negative electrode material, and a nonaqueous electrolyte solution.

The lithium battery generally internally comprises a protective circuit board, excessive discharge is mostly prevented, the lithium ion battery is used as a conversion device for chemical energy to react out electric energy, extremely large energy is bound to exist, if the energy is slowly released, the energy becomes extremely unstable if violent reaction occurs, high-temperature and high-heat energy is firstly generated, then a large amount of gas generated in a sealed environment causes overlarge internal pressure and expansion, the reaction speed is promoted under the condition of increased internal pressure, so vicious circle is carried out until the expansion reaches the bearing limit of the shell, the balance is broken and the shell is torn, once the shell is torn, a large amount of gas finds a channel for leakage, the leakage is violent, huge danger is caused, and therefore a novel explosion-proof lithium battery is provided.

SUMMERY OF THE UTILITY MODEL

The utility model provides a novel explosion-proof lithium cell possesses the inside atmospheric pressure that can avoid the lithium cell too big, and the timely atmospheric pressure to the increase discharges, advantage such as risk that can avoid the explosion has solved current lithium cell when using, and inside atmospheric pressure can not be adjusted, leads to the problem that the battery explodes to appear.

The utility model discloses a novel explosion-proof lithium battery, which comprises a protective shell, wherein a square groove is arranged on the inner side of the protective shell, a lithium battery inner core is fixedly connected with the square groove of the protective shell, two groups of circular through holes are arranged on the outer side of the protective shell, a connecting block is fixedly connected with the circular through holes of the protective shell, a binding post is fixedly connected with the outer side of the connecting block, the binding post is fixedly connected with the lithium battery inner core, a circular through hole is arranged on the top of the protective shell, a fixing cylinder is fixedly connected with the circular through holes of the protective shell, a positioning block is fixedly connected with the inner side of the fixing cylinder, two groups of connecting sleeves are fixedly connected with the outer side of the fixing cylinder, a spring tube is arranged on the inner side of the connecting sleeves, an exhaust pipe is fixedly connected with the outer side, through the blast pipe that sets up and the gas vent that sets up, can carry out the adaptation with the closing plate when atmospheric pressure in lithium battery inner core rises, be favorable to lithium battery inner core's inside and outside atmospheric pressure balance, avoided the risk of battery explosion.

The utility model discloses a novel explosion-proof lithium cell, wherein three group's bar grooves have been seted up in the outside of protecting sheathing, protecting sheathing's bar groove fixedly connected with is sealed to be filled up, sealed the pad is located the both sides of adapter sleeve, through the sealed pad that sets up and the protecting sheathing that sets up, can make that protecting sheathing can be better make up, be favorable to the use of battery.

The utility model discloses a novel explosion-proof lithium cell, wherein lithium cell inner core's inboard has seted up the bar recess, lithium cell inner core's bar recess fixedly connected with splice frame, just the top of splice frame links to each other with the solid fixed cylinder is fixed, through the splice frame that sets up, can make the ventilated membrane can carry out the connection combination with lithium cell inner core, is favorable to the connection of battery to use for discharge that unnecessary gas can be timely in the lithium cell inner core has avoided the risk of explosion.

The utility model discloses a novel explosion-proof lithium cell, wherein circular through-hole has been seted up to the bottom of connection frame, the circular through-hole fixedly connected with ventilated membrane of connection frame, the bottom of connection frame and the top fixedly connected with link that is located the ventilated membrane, the top fixedly connected with fixed block of link, the outside of fixed block is equipped with the bottom plate, just two air inlets have been seted up at the top of link, through the link that sets up and the fixed block that sets up for the No. two springs that set up can obtain better support with the closing plate, are favorable to getting rid of unnecessary gaseous operation.

The utility model discloses a novel explosion-proof lithium cell, wherein No. two springs of top fixedly connected with of fixed block, the top fixedly connected with closing plate of No. two springs, a spring of top fixedly connected with of closing plate, through closing plate and a spring that sets up, can resume normal often at atmospheric pressure, seal the L return bend once more for the normal use that lithium cell inner core can be once more.

The utility model discloses a novel explosion-proof lithium cell, wherein the outside of closing plate is equipped with the slip pipe, circular through-hole has been seted up to the inboard of slip pipe, the circular through-hole fixedly connected with L return bend of department of slip pipe, the vertical support arm through connection of L return bend has fixed pipe, the outside of fixed pipe links to each other with the spring pipe is fixed, uses through the cooperation of the fixed pipe that sets up and spring pipe, can be favorable to atmospheric pressure in the lithium cell inner core to balance with external atmospheric pressure, avoids the risk that the battery appears exploding.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses a blast pipe that sets up and the gas vent of setting, can be when the atmospheric pressure in lithium battery inner core rises, carry out the adaptation with the closing plate, be favorable to lithium battery inner core's inside and outside atmospheric pressure balance, the risk of battery explosion has been avoided, sealed pad through setting up and the protecting sheathing who sets up, can make that protecting sheathing can be better make up, be favorable to the use of battery, through the connection box that sets up, can make the ventilated membrane can carry out the combination with lithium battery inner core, be favorable to the connection of battery to use, make the discharge that unnecessary gas can be timely in the lithium battery inner core, the risk of explosion has been avoided.

2. The utility model discloses a link that sets up and the fixed block that sets up for No. two springs that set up can obtain better support with the closing plate, be favorable to getting rid of unnecessary gaseous operation, closing plate and a spring through setting up, can resume when normal at atmospheric pressure, seal the L return bend once more, make the normal use that lithium cell inner core can be once more, cooperation through the fixed pipe that sets up and spring pipe is used, can be favorable to atmospheric pressure in the lithium cell inner core and external atmospheric pressure to balance, avoid the risk that the battery explodes to appear.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic top view of the lithium battery core of the present invention;

fig. 2 is a schematic side view of the lithium battery core of the present invention;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2 according to the present invention;

fig. 4 is a schematic view of the top-view cross-sectional structure of the connection frame of the present invention.

In the figure: 01. a protective housing; 02. a gasket; 03. an inner core of a lithium battery; 04. connecting sleeves; 05. a fixed cylinder; 06. a spring tube; 07. an exhaust port; 08. positioning blocks; 09. a binding post; 10. connecting blocks; 11. a gas permeable membrane; 12. a connecting frame; 13. an exhaust pipe; 14. a fixed tube; 15. a sliding tube; 16. l bending the pipe; 17. a first spring; 18. a sealing plate; 19. a base plate; 20. a fixed block; 21. a second spring; 22. a connecting frame; 23. an air inlet.

Detailed Description

In the following description, numerous implementation details are set forth in order to provide a more thorough understanding of the present invention. It should be understood, however, that these implementation details should not be used to limit the invention. That is, in some embodiments of the invention, details of these implementations are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for description purposes, not specifically referring to the order or sequence, and are not intended to limit the present invention, but only to distinguish the components or operations described in the same technical terms, and are not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1-4, the novel explosion-proof lithium battery of the present invention comprises a protective casing 01, a square groove is formed on the inner side of the protective casing 01, a lithium battery inner core 03 is fixedly connected to the square groove of the protective casing 01, two sets of circular through holes are formed on the outer side of the protective casing 01, a connecting block 10 is fixedly connected to the circular through hole of the protective casing 01, a binding post 09 is fixedly connected to the outer side of the connecting block 10, the binding post 09 is fixedly connected to the lithium battery inner core 03, a circular through hole is formed on the top of the protective casing 01, a fixing cylinder 05 is fixedly connected to the circular through hole of the protective casing 01, a positioning block 08 is fixedly connected to the inner side of the fixing cylinder 05, two sets of connecting sleeves 04 are fixedly connected to the outer side of the connecting sleeves 04, a spring tube 06 is arranged on the inner side of, the outside fixedly connected with gas vent 07 of blast pipe 13, through the blast pipe 13 that sets up and the gas vent 07 of setting, can carry out the adaptation with closing plate 18 when the atmospheric pressure in lithium battery core 03 risees, be favorable to the inside and outside atmospheric pressure balance of lithium battery core 03, avoided the risk of battery explosion.

Three groups of strip-shaped grooves are formed in the outer side of the protective casing 01, a sealing gasket 02 is fixedly connected to the strip-shaped groove of the protective casing 01, the sealing gasket 02 is located on two sides of the connecting sleeve 04, and the protective casing 01 can be combined better through the sealing gasket 02 and the protective casing 01 which are arranged, so that the protective casing 01 can be used for batteries better.

The bar recess has been seted up to lithium battery core 03's inboard, lithium battery core 03's bar recess fixedly connected with connecting frame 12, and the top of connecting frame 12 links to each other with solid fixed cylinder 05 is fixed, through the connecting frame 12 that sets up, can be so that ventilated membrane 11 can carry out the joint Assembly with lithium battery core 03, be favorable to the connection of battery to use for unnecessary gas can be timely discharge in the lithium battery core 03, has avoided the risk of explosion.

Circular through-hole has been seted up to the bottom of coupling frame 12, circular through-hole department fixedly connected with ventilated membrane 11 of coupling frame 12, the bottom of coupling frame 12 and the top fixedly connected with link 22 that is located ventilated membrane 11, the top fixedly connected with fixed block 20 of link 22, the outside of fixed block 20 is equipped with bottom plate 19, and two air inlets 23 have been seted up at the top of link 22, link 22 through the setting and the fixed block 20 of setting, make No. two springs 21 of setting can obtain better support with closing plate 18, be favorable to getting rid of unnecessary gaseous operation.

Spring 21 No. two of top fixedly connected with of fixed block 20, spring 21's top fixedly connected with closing plate 18, spring 17 No. one of the top fixedly connected with of closing plate 18, through the closing plate 18 and the spring 17 that set up, can be when atmospheric pressure resumes normally, seal L return bend 16 once more for the normal use that lithium cell inner core 03 can be once more.

The outside of closing plate 18 is equipped with sliding tube 15, circular through-hole has been seted up to sliding tube 15's inboard, sliding tube 15's circular through-hole department fixedly connected with L return bend 16, L return bend 16's vertical support arm through connection has fixed pipe 14, fixed pipe 14's the outside links to each other with spring pipe 06 is fixed, fixed pipe 14 through setting up uses with spring pipe 06's cooperation, can be favorable to atmospheric pressure in the lithium cell inner core 03 to balance with external atmospheric pressure, avoid the risk that the battery appears exploding.

When using the utility model discloses the time:

firstly, installing a lithium battery inner core 03 to be used in a protection shell 01, and installing a fixed cylinder 05 to be used outside the protection shell 01;

then, the breathable film 11 can be arranged at the bottom of the connecting frame 12 through the connecting frame 12 arranged inside the lithium battery inner core 03, and when the internal air pressure of the lithium battery inner core 03 expands, air can enter the two air inlets 23 through the breathable film 11 and then is transferred to the arranged sliding tube 15;

at this time, because of the violent chemical reaction, the air pressure is continuously enhanced, the air pressure can push the sealing plate 18 at this time, the sealing plate 18 can be pushed by the air pressure through the combined use of the second spring 21 and the first spring 17, when the air pressure is increased to a certain degree, the sealing plate 18 is pushed to the top, at this time, the air pressure can transmit redundant gas to the spring tube 06 through the arranged L-shaped bent tube 16, and then the redundant gas is exhausted through the arranged exhaust pipe 13;

therefore, the pressure of the lithium battery inner core 03 can be balanced with the external pressure, so that the intensity of chemical reaction of the lithium battery inner core 03 can be reduced, and the explosion risk of the lithium battery inner core 03 can be avoided.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A novel explosion-proof lithium battery comprises a protective shell (01), and is characterized in that: the inner side of the protective shell (01) is provided with a square groove, the square groove of the protective shell (01) is fixedly connected with a lithium battery inner core (03), the outer side of the protective shell (01) is provided with two groups of round through holes, the round through holes of the protective shell (01) are fixedly connected with a connecting block (10), the outer side of the connecting block (10) is fixedly connected with a binding post (09), the binding post (09) is fixedly connected with the lithium battery inner core (03), the top of the protective shell (01) is provided with a round through hole, the round through holes of the protective shell (01) are fixedly connected with a fixed cylinder (05), the inner side of the fixed cylinder (05) is fixedly connected with a positioning block (08), the outer side of the fixed cylinder (05) is fixedly connected with two groups of connecting sleeves (04), and the inner side of the connecting sleeves (04, the outside fixedly connected with blast pipe (13) of spring pipe (06), just blast pipe (13) link to each other with protecting sheathing (01) run through, the outside fixedly connected with gas vent (07) of blast pipe (13).

2. The novel explosion-proof lithium battery of claim 1, characterized in that: three groups of strip-shaped grooves are formed in the outer side of the protective shell (01), a sealing gasket (02) is fixedly connected to the strip-shaped grooves of the protective shell (01), and the sealing gasket (02) is located on two sides of the connecting sleeve (04).

3. The novel explosion-proof lithium battery of claim 1, characterized in that: the bar recess has been seted up to the inboard of lithium battery inner core (03), the bar groove fixedly connected with carriage (12) of lithium battery inner core (03), just the top of carriage (12) is fixed continuous with solid fixed cylinder (05).

4. The novel explosion-proof lithium battery of claim 3, characterized in that: circular through-hole has been seted up to the bottom of linking frame (12), circular through-hole department fixedly connected with ventilated membrane (11) of linking frame (12), the bottom of linking frame (12) just is located top fixedly connected with link (22) of ventilated membrane (11), the top fixedly connected with fixed block (20) of link (22), the outside of fixed block (20) is equipped with bottom plate (19), just two air inlets (23) have been seted up at the top of link (22).

5. The novel explosion-proof lithium battery of claim 4, characterized in that: the top fixedly connected with spring (21) No. two of fixed block (20), the top fixedly connected with closing plate (18) of spring No. two (21), the top fixedly connected with spring (17) of closing plate (18).

6. The novel explosion-proof lithium battery as claimed in claim 5, wherein: the outside of closing plate (18) is equipped with sliding tube (15), circular through-hole has been seted up to sliding tube (15) inboard, the circular through-hole fixedly connected with L return bend (16) of sliding tube (15), the vertical support arm through connection of L return bend (16) has fixed pipe (14), the outside and the spring pipe (06) of fixed pipe (14) are fixed continuous.