CN217697707U

CN217697707U - Lithium ion power battery for fire suppression capsule fire extinguishing

Info

Publication number: CN217697707U
Application number: CN202220475881.2U
Authority: CN
Inventors: 徐小荣; 胡敏; 宁壮
Original assignee: Zhejiang Yaning Fire Fighting Equipment Co ltd
Current assignee: Zhejiang Yaning Fire Fighting Equipment Co ltd
Priority date: 2022-03-07
Filing date: 2022-03-07
Publication date: 2022-11-01
Anticipated expiration: 2032-03-07

Abstract

The utility model relates to a lithium ion power battery that conflagration restraines capsule was put out a fire, including battery case, utmost point crowd and utmost point post, state and be equipped with the mechanism installation space of putting out a fire in the battery case, put out a fire the mechanism and include the fire prevention cover, the fire prevention cover is equipped with the utmost point post via hole that supplies utmost point post to pass through, and the fire prevention cover is in the same place with battery case is fixed, and utmost point crowd is located sealed intracavity, a plurality of first perpendicular baffles of baffle and longitudinal distribution that are equipped with transverse distribution in the protection casing erect the baffle with a plurality of seconds of longitudinal distribution, and the fire prevention cover, first perpendicular baffle and second are erect the baffle and are all formed for the heat conduction material preparation, and first perpendicular baffle and second erect the baffle and keep apart a plurality of perpendicular blind holes down of a plurality of openings in the protection casing, it has the conflagration to erect the capsule to store in the blind hole, and first perpendicular baffle and second erect the lower extreme homopolar crowd heat conductivity of baffle and link together. The utility model has the advantages of the response is timely, the problem that the fire suppression capsule can not all respond fast when multilayer fire suppression capsule puts out a fire has been solved.

Description

Lithium ion power battery for fire suppression capsule fire extinguishing

Technical Field

The utility model relates to a lithium ion battery field especially relates to a lithium ion power battery that conflagration suppression capsule was put out a fire.

Background

With the wide application of lithium ion batteries in the fields of electric bicycles, energy storage, electric automobiles and the like, related fire and explosion accidents frequently occur, and serious threats are caused to the life safety and property safety of users.

The lithium ion battery is a closed system containing high-energy materials, inflammable substances and a flame retardant. The lithium ion battery only exchanges energy with the outside and does not exchange substances. The combustible material of the lithium ion battery fire mainly comprises electrolyte and combustible gas generated by thermal runaway reaction, and the lithium ion battery thermal runaway reaction can continuously generate the combustible gas and heat. When the lithium ion battery has a thermal runaway fire, the external fire extinguishing agent can only extinguish the fire outside the battery and cannot enter the battery to block the thermal runaway reaction, the combustible gas still can be continuously released from the battery, the temperature of the battery can still rise again, and the risk of reburning is high.

The existing measure for improving the safety of the lithium ion battery is to add a flame retardant into an electrolyte. However, this measure has more limitations, namely, in order not to affect the performance of the lithium ion battery, too much flame retardant cannot be added, and the flame retardant effect is general; and secondly, the flame retardant can not inhibit the thermal runaway gas production reaction. Therefore, the patent documents with Chinese patent names of lithium battery thermal runaway fire suppression capsules and lithium ion batteries, patent numbers of ZL201910578936.5, application date of 2019, 06 months and 28 days disclose a fire suppression capsule and a lithium ion battery which is subjected to fire prevention by arranging the fire suppression capsule in the battery. The lithium ion battery with the fire suppression capsule has the following defects: the existing battery cannot be conveniently transformed to realize the fire prevention of the lithium ion battery; the fire suppression capsules are started in a manner of bursting apart by temperature rise, and in the patent, when the fire suppression capsules are stacked thickly, the fire suppression capsules far away from the battery pole group are not easy to respond, so that fire extinguishment cannot be reliably realized at the beginning of a fire.

SUMMERY OF THE UTILITY MODEL

The utility model provides a lithium ion power battery that timely conflagration of response restraines capsule and put out a fire has solved the problem that the conflagration restraines the capsule and can not all quick responses when the battery is put out a fire through conflagration restraines the capsule.

The technical problem is solved by the following technical scheme: the utility model provides a lithium ion power battery that conflagration restraines capsule and puts out a fire, includes battery case, the utmost point crowd that is located battery case and one end are located two utmost point posts that battery case outside homopolar crowd electrical connection is in the same place, be equipped with the mechanism installation space of putting out a fire that is located utmost point crowd top in the battery case, utmost point post process the mechanism installation space of putting out a fire stretches out battery case, the mechanism of putting out a fire is including being used for covering fire prevention cover on the utmost point crowd, fire prevention cover is equipped with and supplies two utmost point post via holes that utmost point post passes through, fire prevention cover with battery case is fixed together, fire prevention cover and battery case enclose out sealed chamber, utmost point crowd is located sealed intracavity, a plurality of first perpendicular baffles that are equipped with transverse distribution in the protection casing and a plurality of second perpendicular baffle of longitudinal distribution erect the baffle, fire prevention cover, first perpendicular baffle and second are erect the baffle and are all formed for the heat conduction material preparation, and first perpendicular baffle and second are erected a plurality of isolating a plurality of opening blind holes down in the protection casing, erect the baffle and erect the blind hole, erect the baffle and have the conflagration restraines the capsule in the storage, and link together the lower extreme homopolar crowd of first perpendicular baffle and second is erected the heat conduction material. This technical scheme fire prevention cover, first perpendicular baffle and second are erect and are separated all for the heat conduction material preparation and form for the heat can the fast transmission for keep away from the conflagration suppression capsule at battery main part position, thereby make corresponding fast, can not produce and present because the heat can not fast transmit for keeping away from battery main part, thereby lead to the conflagration suppression capsule of edge can not in time respond to and influence the problem of fire control effect.

Preferably, a casing part support ring extending along the circumferential direction of the battery casing is arranged on the inner circumferential surface of the battery casing, and the fireproof cover is provided with a flanging which is supported on the casing part support ring in a sealing manner, so that the fireproof cover and the battery casing form a sealed cavity. The connection can be conveniently positioned.

Preferably, the outer shell support ring is provided with threaded blind holes distributed along the circumferential direction of the outer shell support ring, the outer shell support ring is provided with a sealing washer, and the fastening bolt sequentially penetrates through the flanging and the sealing washer and is in threaded connection in the threaded blind holes so that the sealing washer can be used for sealing and connecting the outer shell support ring and the flanging together. Can be conveniently connected together in a sealing way.

Preferably, the battery shell comprises a bottom box and a cover plate covering the bottom box, the inner circumferential surface of the part, located above the support ring of the shell part, of the bottom box is a prismatic surface, the outer circumferential surface of the flanging abuts against the inner circumferential surface of the bottom box, and a chamfered surface is arranged between the outer circumferential surface of the flanging and the lower end surface of the flanging. The protective cover can be conveniently assembled in the bottom box.

Preferably, only one stack of fire suppression capsules is stacked in each blind vertical hole, and the four side walls of the blind vertical holes are in contact with the fire suppression capsules. The response can be made faster.

Preferably, the first vertical partition plate and the second vertical partition plate separate two pole column cavities and a plurality of exhaust cavities in the fireproof cover, the two pole column cavities are aligned with the two pole column through holes in a one-to-one correspondence mode, the exhaust cavities are provided with exhaust pipes for exhausting gas in the exhaust cavities to the outside of the fireproof cover, the exhaust pipes penetrate through the battery shell and are provided with valves, and each vertical blind hole is communicated with at least one exhaust cavity through a communicating structure. After fire extinguishing, the generated cavity collected in the fireproof hood can be conveniently and controllably discharged in a centralized way.

Preferably, the communication structure is a communication hole arranged on the first vertical partition plate and/or the second vertical partition plate.

Preferably, the pole cavity is disconnected from the blind vertical hole. Can avoid the in-process of putting out a fire, follow the utility model discloses homopolar column junction produces gas leakage.

Preferably, the fireproof cover, the first vertical partition plate and the second vertical partition plate are all made of insulating materials.

The utility model has the advantages of that: the corresponding speed when a fire disaster occurs is high; can be conveniently installed on the existing lithium ion battery to protect fire.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic cross-sectional view of a fire suppression mechanism;

fig. 4 is a schematic top view of the fire suppression mechanism.

In the figure: utmost point crowd 1, utmost point post 2, end box 3, fire prevention cover 4, utmost point post via hole 5, apron 6, fire extinguishing mechanism installation space 7, first perpendicular baffle 8, the second is erect baffle 9, is erect blind hole 10, conflagration suppression capsule 11, utmost point post chamber 12, exhaust chamber 13, connectivity structure 14, blast pipe 15, the connecting hole 16 that the flanging is, shell portion support ring 18, flanging 19, screw thread blind hole 20, seal ring 21, fastening bolt 22, chamfer face 23.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 and 4, the lithium ion power battery for fire suppression capsule fire extinguishing comprises a battery shell, a pole group 1 positioned in the battery shell and two poles 2 with one ends positioned outside the battery shell and electrically connected with the same pole group, wherein the battery shell comprises a bottom box 3 and a cover plate 6 detachably connected to the bottom box, and the poles extend out of the battery shell from the cover plate. Be equipped with the mechanism installation space 7 of putting out a fire that is located utmost point crowd top in the battery case, utmost point post stretches out battery case through the mechanism installation space of putting out a fire, and the mechanism of putting out a fire is including being used for covering fire prevention cover 4 on the utmost point crowd. The fireproof cover is made of heat-conducting and insulating materials. The fireproof cover is provided with two pole post via holes 5 for two pole posts to pass through. A plurality of first vertical partition plates 8 which are transversely distributed and a plurality of second vertical partition plates 9 which are longitudinally distributed are arranged in the protective cover, and the first vertical partition plates and the second vertical partition plates are both made of heat-conducting insulating materials. The first vertical partition plate and the second vertical partition plate are criss-cross, the first vertical partition plate and the second vertical partition plate isolate a plurality of vertical blind holes 10 with a plurality of openings facing downwards in the protective cover, and fire suppression capsules 11 are stored in the vertical blind holes. The lower ends of the first vertical partition plate and the second vertical partition plate are in heat conduction butt joint with the same pole group. Only one stack of fire suppression capsules is stacked in each vertical blind hole, and four side walls of each vertical blind hole are in contact with the fire suppression capsules. First perpendicular baffle and second are erect the baffle and are kept apart two utmost

point post chambeies

12 and 4 exhaust chamber 13 in the fire prevention cover, and two utmost point post chambeies align with two utmost point post via holes one-to-one, and utmost point post sealing connection makes utmost point post chamber with break off between the perpendicular blind hole in the utmost point post intracavity (specifically for sealing through the sealing washer), the exhaust chamber is equipped with the blast pipe 15 that will exhaust the gas row in the intracavity and cover the outside fire prevention. The exhaust pipe penetrates through the battery shell and is provided with a valve. Each of which communicates with at least one exhaust chamber via a communicating structure 14. The intercommunication structure is the intercommunicating pore that sets up on first perpendicular baffle and the perpendicular baffle of second, specifically: the first vertical partition plate isolated between the adjacent vertical blind holes and the second vertical partition plate isolated between the adjacent vertical blind holes are both provided with communicating holes, and the partition plate isolated between the exhaust cavity and the vertical blind holes is also provided with exhaust holes. Be equipped with along battery case circumference extension's shell portion support ring 18 on the battery case internal peripheral face, the fire prevention cover is equipped with flanging 19, and the flanging seal is supported on shell portion support ring and makes fire prevention cover and battery case become sealed chamber, specifically: the outer shell supporting ring is provided with a threaded blind hole 20 distributed along the circumferential direction of the outer shell supporting ring, the outer shell supporting ring is provided with a sealing washer 21, and a fastening bolt 22 sequentially penetrates through the connecting hole 16 in the flanging and the connecting hole in the sealing washer and then is in threaded connection in the threaded blind hole, so that the sealing washer enables the outer shell supporting ring and the flanging to be connected together in a sealing mode. The inner peripheral surface of the part of the bottom box above the supporting ring of the shell part is a prismatic surface, the outer peripheral surface of the flanging abuts against the inner peripheral surface of the bottom box, and a chamfer surface 23 is arranged between the outer peripheral surface of the flanging and the lower end surface.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a lithium ion power battery that conflagration restraines capsule and puts out a fire, includes battery case, be located battery case utmost point crowd and one end are located two utmost point posts that battery case outside homopolar crowd electrical connection is in the same place, a serial communication port, be equipped with the mechanism installation space that puts out a fire that is located utmost point crowd top in the battery case, utmost point post process the mechanism installation space that puts out a fire stretches out battery case, the mechanism of putting out a fire is including being used for covering fire prevention cover on the utmost point crowd, fire prevention cover is equipped with and supplies two utmost point post via holes that utmost point post passes through, fire prevention cover with battery case is fixed together, fire prevention cover and battery case enclose out sealed chamber, utmost point crowd is located sealed intracavity, be equipped with a plurality of first perpendicular baffles of horizontal distribution in the fire prevention cover and the perpendicular baffle of a plurality of seconds of longitudinal distribution, fire prevention cover, first perpendicular baffle and second are erect the baffle and are formed for the heat conduction material preparation, first perpendicular baffle of erecting separates out a plurality of openings blind holes down in the protection casing, first perpendicular baffle and second erect a plurality of blind hole and the baffle and keep apart a plurality of open-round outer heat conduction shell of turn-round outside the battery case, the storage of battery case is equipped with the turn-ups outside the circumference support ring of battery case, and the circumference support ring outside the battery case of battery case portion is equipped with the fire prevention is equipped with the outer.

2. A lithium ion power battery for fire suppression capsule fire extinguishing according to claim 1, wherein the casing support ring is provided with blind threaded holes distributed along the circumference of the casing support ring, the casing support ring is provided with a sealing washer, and the fastening bolt is threaded into the blind threaded holes after passing through the flanging and the sealing washer in sequence so that the sealing washer connects the casing support ring and the flanging in a sealing manner.

3. A lithium ion power battery as defined in claim 2, wherein the battery case comprises a bottom case and a cover plate covering the bottom case, the inner peripheral surface of the portion of the bottom case located above the support ring of the case portion is prism-shaped, the outer peripheral surface of the flange abuts against the inner peripheral surface of the bottom case, and a chamfer surface is provided between the outer peripheral surface and the lower end surface of the flange.

4. A fire suppression capsule fire suppression lithium ion power cell as in claim 1, 2 or 3 wherein only one stack of fire suppression capsules is stacked in each vertical blind hole, and the four side walls of the vertical blind hole are in contact with the fire suppression capsules.

5. A lithium ion power battery as defined in claim 1, 2 or 3 in which the first vertical partition and the second vertical partition separate two pole chambers and a plurality of exhaust chambers in the fire-proof cover, the two pole chambers are aligned with the two pole through holes in a one-to-one correspondence, the exhaust chambers are provided with exhaust pipes for exhausting gas in the exhaust chambers to the outside of the fire-proof cover, the exhaust pipes penetrate through the battery case and are provided with valves, and each of the vertical blind holes is communicated with at least one of the exhaust chambers through a communicating structure.

6. The lithium-ion power battery with the fire suppression capsule for fire extinguishing according to claim 5, wherein the communication structure is a communication hole arranged on the first vertical partition plate and/or the second vertical partition plate.

7. The lithium-ion power battery with fire suppression capsule fire extinguishing function according to claim 5, wherein the pole cavity is disconnected from the blind vertical hole.

8. The lithium ion power battery as claimed in claim 1, 2 or 3, wherein the fire-proof cover, the first vertical partition and the second vertical partition are made of insulating material.