CN114464934A - Explosion-proof type lithium battery shell - Google Patents

Explosion-proof type lithium battery shell Download PDF

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Publication number
CN114464934A
CN114464934A CN202210035482.9A CN202210035482A CN114464934A CN 114464934 A CN114464934 A CN 114464934A CN 202210035482 A CN202210035482 A CN 202210035482A CN 114464934 A CN114464934 A CN 114464934A
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CN
China
Prior art keywords
explosion
proof
lithium battery
shell
battery case
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210035482.9A
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Chinese (zh)
Inventor
叶湘
叶龙辉
邓永敬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Geshengli Energy Co ltd
Original Assignee
Shenzhen Geshengli Energy Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Geshengli Energy Co ltd filed Critical Shenzhen Geshengli Energy Co ltd
Priority to CN202210035482.9A priority Critical patent/CN114464934A/en
Publication of CN114464934A publication Critical patent/CN114464934A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10Primary casings; Jackets or wrappings
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/61Types of temperature control
    • H01M10/613Cooling or keeping cold
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/65Means for temperature control structurally associated with the cells
    • H01M10/655Solid structures for heat exchange or heat conduction
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/65Means for temperature control structurally associated with the cells
    • H01M10/655Solid structures for heat exchange or heat conduction
    • H01M10/6554Rods or plates
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/262Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30Arrangements for facilitating escape of gases
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30Arrangements for facilitating escape of gases
    • H01M50/308Detachable arrangements, e.g. detachable vent plugs or plug systems

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Secondary Cells (AREA)

Abstract

The invention discloses an explosion-proof lithium battery shell, which comprises an outer shell, wherein an inner shell is integrally connected inside the outer shell, an explosion-proof net is fixedly connected to the inner wall of the inner shell, a lithium battery body is arranged inside the explosion-proof net, a plurality of air holes are formed in the outer surface of the inner shell, a plurality of explosion-proof pipes are fixedly embedded inside the outer shell, when the lithium battery body explodes, the explosion-proof net protects the lithium battery body, strong air pressure drives a moving sleeve to move towards the explosion-proof pipes, at the moment, a piston pushes out a waterproof plug and is separated from a first air outlet hole, and gas inside the shell is discharged from the explosion-proof pipes through the air holes, the first air outlet hole and a second air outlet hole sequentially, so that the pressure inside the lithium battery shell is relieved, and further the danger caused by explosion of the lithium battery shell is avoided.

Description

Explosion-proof type lithium battery shell
Technical Field
The invention relates to the technical field of lithium battery shell production, in particular to an explosion-proof lithium battery shell.
Background
A lithium battery is a type of battery using a nonaqueous electrolyte solution, with lithium metal or a lithium alloy as a negative electrode material. Because the chemical characteristics of lithium metal are very active, the lithium metal has very high requirements on the environment in processing, storage and use. With the development of science and technology, lithium batteries have become the mainstream nowadays. In general, a lithium metal battery uses 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 is likely to be short-circuited due to aging of a circuit in a long-time use process, when the temperature in the lithium battery is suddenly increased, the possibility of explosion is very easy to occur, and the existing lithium battery has no good buffer measure to weaken the impact force generated by explosion when the explosion occurs.
Disclosure of Invention
The present invention is directed to an explosion-proof lithium battery case, which solves the above problems.
In order to achieve the purpose, the invention provides the following technical scheme:
an explosion-proof lithium battery shell comprises an outer shell, wherein an inner shell is integrally connected inside the outer shell, an explosion-proof net is fixedly connected to the inner wall of the inner shell, a lithium battery body is arranged inside the explosion-proof net, a plurality of air holes are formed in the outer surface of the inner shell, a plurality of explosion-proof pipes are fixedly embedded inside the outer shell, a waterproof plug is buckled at one end of each explosion-proof pipe, a piston is slidably connected inside each explosion-proof pipe, a slide rod is slidably arranged at the other end of each explosion-proof pipe in a penetrating mode, a moving sleeve is slidably sleeved on the outer surface of each explosion-proof pipe, a plurality of springs are fixedly connected between each moving sleeve and each explosion-proof pipe, a plurality of first air outlet holes are formed in the outer surface of each explosion-proof pipe, a plurality of second air outlet holes are formed in the outer surface of the piston, a sealing cover plate is bolted on the upper end face of the outer shell, and a limiting block is integrally connected on the bottom end face of the sealing cover plate, stopper and lithium cell body's up end butt, sealed apron's up end middle part fixed mounting has conductive seat, the equal fixedly connected with in side leads electrical pillar around the bottom face of conductive seat, the bottom of front and back side electric pillar respectively with lithium cell body's positive negative pole electric connection.
Preferably, the outer surface of the shell is fixedly sleeved with a plurality of longitudinally-arranged radiating ring plates.
Preferably, the heat dissipation ring plate is provided with a plurality of air flow through holes.
Preferably, the outer fixed surface of inner shell is connected with a plurality of heat conduction silica gel posts, a plurality of louvres have been seted up to the surface of shell and the inside that is located the heat dissipation crown plate, the inner wall of louvre bonds and has the heat conduction silica gel sealing block, one side of heat conduction silica gel sealing block and the inner wall fixed connection of heat dissipation crown plate, the opposite side and the heat conduction silica gel post fixed connection of heat conduction silica gel sealing block.
Preferably, an annular groove is formed in the upper end face of the shell, a heat-resistant sealing ring is arranged inside the annular groove, and a sealing ring plate is fixedly connected to the bottom end face of the sealing cover plate and is abutted to the heat-resistant sealing ring.
Preferably, an insulating layer is arranged between the explosion-proof net and the lithium battery body.
Preferably, handle grooves are formed in the front side and the rear side of the upper end face of the sealing cover plate, and handles are rotatably mounted on the inner walls of the handle grooves.
Preferably, the middle part of the outer surface of the handle is fixedly sleeved with a rubber sleeve.
Compared with the prior art, the invention has the beneficial effects that: the lithium battery shell is convenient to use and simple in structure, when the lithium battery body explodes, the explosion-proof net protects the lithium battery body, the strong air pressure drives the moving sleeve to move towards the explosion-proof pipe, the piston pushes out the waterproof plug at the moment, and meanwhile, the piston is separated from the first air outlet hole, so that the air pressure in the lithium battery shell is released, and the danger caused by explosion of the lithium battery shell is avoided; the arranged heat dissipation ring plate can improve the heat dissipation capacity of the lithium battery shell and avoid explosion of the lithium battery body caused by high temperature; the heat on the inner shell can be more conveniently transferred to the heat dissipation ring plate through the heat conduction silica gel column and the heat conduction silica gel sealing block; the handle that sets up multiplicable this lithium cell casing's portability, the handle groove of setting can be with it buckle in the handle groove when not using the handle, and then avoid the handle to influence and electrically conduct the seat and connect external equipment.
Drawings
FIG. 1 is a schematic sectional view of a main structure of an explosion-proof lithium battery case;
FIG. 2 is a schematic top view of a main structure of an explosion-proof lithium battery case;
fig. 3 is an enlarged schematic view of a structure a of an explosion-proof lithium battery case shown in fig. 1.
In the figure: 1-outer shell, 2-heat dissipation ring plate, 3-heat conduction silica gel column, 4-conductive column, 5-conductive seat, 6-limiting block, 7-sealing cover plate, 8-heat dissipation hole, 9-air hole, 10-inner shell, 11-insulating layer, 12-lithium battery body, 13-explosion-proof net, 14-air flow through hole, 15-handle, 16-handle groove, 17-moving sleeve, 18-spring, 19-sliding rod, 20-explosion-proof pipe, 21-first air outlet, 22-piston, 23-waterproof plug, 24-second air outlet and 25-heat-resistant sealing ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1: referring to fig. 1 to 3, an explosion-proof lithium battery shell includes an outer shell 1, an inner shell 10 is integrally connected inside the outer shell 1, an explosion-proof mesh 13 is fixedly connected to an inner wall of the inner shell 10, a lithium battery body 12 is arranged inside the explosion-proof mesh 13, a plurality of air holes 9 are formed in an outer surface of the inner shell 10, a plurality of explosion-proof tubes 20 are fixedly embedded inside the outer shell 1, a waterproof plug 23 is fastened at one end of each explosion-proof tube 20, a piston 22 is slidably connected inside each explosion-proof tube 20, a slide rod 19 is slidably inserted at the other end of each explosion-proof tube 20, a moving sleeve 17 is slidably sleeved on an outer surface of each explosion-proof tube 20, a plurality of springs 18 are fixedly connected between the moving sleeve 17 and each explosion-proof tube 20, a plurality of first air outlet holes 21 are formed in an outer surface of each explosion-proof tube 20, a plurality of second air outlet holes 24 are formed in an outer surface of the piston 22, the up end bolted connection of shell 1 has sealed apron 7, the bottom face integration of sealed apron 7 is connected with stopper 6, stopper 6 and lithium cell body 12's up end butt, sealed apron 7's up end middle part fixed mounting has conducting seat 5, the equal fixedly connected with in side leads electrical pillar 4 around the bottom face of conducting seat 5, the bottom of front and back side electric pole 4 respectively with lithium cell body 12's positive negative pole electric connection.
When lithium cell body 12 explodes, explosion-proof net 13 protects it, powerful atmospheric pressure will drive and remove cover 17 and remove to explosion-proof pipe 20 direction, piston 22 will ejecting waterproof plug 23 this moment, piston 22 will break away from first venthole 21 simultaneously, the inside gas of casing will loop through gas pocket 9, first venthole 21, second venthole 24 is discharged from explosion-proof pipe 20 at last, make the inside atmospheric pressure of lithium cell casing etc. to the pressure release, and then avoid this lithium cell casing to explode and open and take place danger.
Wherein, the fixed cover of surface of shell 1 is equipped with a plurality of vertical heat dissipation crown plates 2 that are provided with, and the heat dissipation crown plate 2 that sets up can improve this lithium cell casing's heat-sinking capability, avoids high temperature to lead to lithium cell body 12 to blast.
The heat dissipation ring plate 2 is provided with a plurality of air flow through holes 14, and the arranged air flow through holes 14 can improve the heat dissipation capability of the heat dissipation ring plate 2.
Wherein, a plurality of heat conduction silica gel posts 3 of the outer fixed surface of inner shell 10 are connected with, a plurality of louvres 8 have been seted up to the surface of shell 1 and the inside that is located heat dissipation crown plate 2, the inner wall of louvre 8 bonds and has the heat conduction silica gel sealing block, one side of heat conduction silica gel sealing block and the inner wall fixed connection of heat dissipation crown plate 2, the opposite side and the 3 fixed connection of heat conduction silica gel posts of heat conduction silica gel sealing block.
Through heat conduction silica gel post 2 and the sealed piece of heat conduction silica gel, can be more convenient for transmit the heat on the inner shell 10 for heat dissipation crown plate 2.
An annular groove is formed in the upper end face of the shell 1, a heat-resistant sealing ring 25 is arranged inside the annular groove, and a sealing ring plate is fixedly connected to the bottom end face of the sealing cover plate 7 and is abutted to the heat-resistant sealing ring 25.
The heat-resistant seal ring 25 improves the sealing performance of the sealing cover plate 7 after installation.
An insulating layer 11 is arranged between the explosion-proof net 13 and the lithium battery body 12.
Example 2: referring to fig. 1 to 2, a rubber gasket with excellent sealing performance is different from that of embodiment 1 in that handle grooves 16 are formed in front and rear sides of an upper end surface of a sealing cover plate 7, and a handle 15 is rotatably mounted on an inner wall of each handle groove 16.
Furthermore, a rubber sleeve is fixedly sleeved in the middle of the outer surface of the handle 15.
The handle 15 is arranged to increase the portability of the lithium battery shell, and the handle groove 16 is arranged to be buckled into the handle groove 16 when the handle 15 is not used, so that the handle 15 is prevented from influencing the connection of the conductive seat 5 and external equipment.
In the present invention, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only terms of relationships determined for convenience of describing structural relationships of the parts or elements of the present invention, and are not intended to refer to any parts or elements of the present invention, and are not to be construed as limiting the present invention.

Claims (8)

1. An explosion-proof type lithium battery case, includes shell (1), its characterized in that: the inner shell (10) is integrally connected with the inner shell (1), the inner wall of the inner shell (10) is fixedly connected with an explosion-proof net (13), a lithium battery body (12) is arranged inside the explosion-proof net (13), a plurality of air holes (9) are formed in the outer surface of the inner shell (10), a plurality of explosion-proof tubes (20) are fixedly embedded in the outer shell (1), one end of each explosion-proof tube (20) is buckled with a waterproof plug (23), a piston (22) is slidably connected inside the explosion-proof tube (20), a sliding rod (19) is slidably arranged at the other end of each explosion-proof tube (20) in a penetrating mode, a moving sleeve (17) is slidably arranged on the outer surface of each explosion-proof tube (20), a plurality of springs (18) are fixedly connected between the moving sleeve (17) and the explosion-proof tubes (20), a plurality of first air outlet holes (21) are formed in the outer surface of each explosion-proof tube (20), a plurality of second ventholes (24) have been seted up to the surface of piston (22), the up end bolted connection of shell (1) has sealed apron (7), the bottom face integration of sealed apron (7) is connected with stopper (6), the up end butt of stopper (6) and lithium cell body (12), the up end middle part fixed mounting of sealed apron (7) has electrically conductive seat (5), the equal fixedly connected with in side leads electrical pillar (4) around the bottom face of electrically conductive seat (5), the bottom of front and back side electrically conductive post (4) respectively with the positive negative pole electric connection of lithium cell body (12).
2. An explosion-proof lithium battery case as claimed in claim 1, wherein: the outer surface of the shell (1) is fixedly sleeved with a plurality of longitudinally-arranged radiating ring plates (2).
3. An explosion-proof lithium battery case according to claim 2, wherein: the heat dissipation ring plate (2) is provided with a plurality of air flow through holes (14).
4. An explosion-proof lithium battery case according to claim 3, wherein: the outer fixed surface of inner shell (10) is connected with a plurality of heat conduction silica gel columns (3), a plurality of louvres (8) have been seted up to the surface of shell (1) and the inside that is located heat dissipation ring board (2), the inner wall bonding of louvre (8) has heat conduction silica gel sealing block, the inner wall fixed connection of one side and heat dissipation ring board (2) of heat conduction silica gel sealing block, the opposite side and heat conduction silica gel column (3) fixed connection of heat conduction silica gel sealing block.
5. An explosion-proof lithium battery case according to claim 4, wherein: the heat-resistant sealing device is characterized in that an annular groove is formed in the upper end face of the shell (1), a heat-resistant sealing ring (25) is arranged inside the annular groove, and a sealing ring plate is fixedly connected to the bottom end face of the sealing cover plate (7) and is abutted to the heat-resistant sealing ring (25).
6. An explosion-proof lithium battery case according to claim 5, wherein: an insulating layer (11) is arranged between the explosion-proof net (13) and the lithium battery body (12).
7. An explosion-proof lithium battery case as claimed in claim 6, wherein: handle grooves (16) are formed in the front side and the rear side of the upper end face of the sealing cover plate (7), and handles (15) are rotatably mounted on the inner walls of the handle grooves (16).
8. An explosion proof lithium battery case according to claim 7, wherein: the middle part of the outer surface of the handle (15) is fixedly sleeved with a rubber sleeve.
CN202210035482.9A 2022-01-13 2022-01-13 Explosion-proof type lithium battery shell Pending CN114464934A (en)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210035482.9A CN114464934A (en) 2022-01-13 2022-01-13 Explosion-proof type lithium battery shell

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CN114464934A true CN114464934A (en) 2022-05-10

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115377604A (en) * 2022-08-09 2022-11-22 电子科技大学长三角研究院(湖州) Safe air leakage structure of lithium power battery shell

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030013005A1 (en) * 2001-07-09 2003-01-16 Chin Lung Chang Explosion-proof safety structure for column shape lithium battery
CN206409538U (en) * 2016-12-29 2017-08-15 贵州理工学院 A kind of new-energy automobile new type power coupling device Multifunctional housing
CN207624845U (en) * 2017-11-30 2018-07-17 东莞市朗泰通实业有限公司 A kind of Ni-MH battery of new type of safe
CN210403929U (en) * 2019-09-09 2020-04-24 惠安永恒机械有限公司 Explosion-proof lithium battery
CN211150625U (en) * 2019-12-13 2020-07-31 安徽新品源电池技术有限公司 Lithium ion battery with explosion-proof structure
CN213905525U (en) * 2020-12-31 2021-08-06 江苏万锂达智能科技有限公司 Lithium battery with good explosion-proof effect
CN215070122U (en) * 2021-04-15 2021-12-07 厦门派客新能源科技有限公司 Lithium battery shell
CN215418488U (en) * 2021-04-20 2022-01-04 湖北亿纬动力有限公司 Piston type lithium battery explosion-proof valve structure

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030013005A1 (en) * 2001-07-09 2003-01-16 Chin Lung Chang Explosion-proof safety structure for column shape lithium battery
CN206409538U (en) * 2016-12-29 2017-08-15 贵州理工学院 A kind of new-energy automobile new type power coupling device Multifunctional housing
CN207624845U (en) * 2017-11-30 2018-07-17 东莞市朗泰通实业有限公司 A kind of Ni-MH battery of new type of safe
CN210403929U (en) * 2019-09-09 2020-04-24 惠安永恒机械有限公司 Explosion-proof lithium battery
CN211150625U (en) * 2019-12-13 2020-07-31 安徽新品源电池技术有限公司 Lithium ion battery with explosion-proof structure
CN213905525U (en) * 2020-12-31 2021-08-06 江苏万锂达智能科技有限公司 Lithium battery with good explosion-proof effect
CN215070122U (en) * 2021-04-15 2021-12-07 厦门派客新能源科技有限公司 Lithium battery shell
CN215418488U (en) * 2021-04-20 2022-01-04 湖北亿纬动力有限公司 Piston type lithium battery explosion-proof valve structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115377604A (en) * 2022-08-09 2022-11-22 电子科技大学长三角研究院(湖州) Safe air leakage structure of lithium power battery shell
CN115377604B (en) * 2022-08-09 2023-07-25 电子科技大学长三角研究院(湖州) Safety air leakage structure of lithium power battery shell

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Application publication date: 20220510