CN111900290B

CN111900290B - Lithium ion power battery overheating protection system

Info

Publication number: CN111900290B
Application number: CN202010710376.7A
Authority: CN
Inventors: 钟旭航; 张旻澍; 李晓丹; 路密
Original assignee: Fujian Dongfang Xingshi New Energy Co ltd
Current assignee: Fujian Dongfang Xingshi New Energy Co ltd
Priority date: 2020-07-22
Filing date: 2020-07-22
Publication date: 2022-06-21
Anticipated expiration: 2040-07-22
Also published as: CN111900290A

Abstract

The invention discloses an overheating protection system for a lithium ion power battery, which comprises a device shell, wherein a sealing cover is arranged inside the device shell, a window is arranged at the left end of the device shell, a push rod is arranged on one side of the window inside the device shell, a pushing screw rod is arranged inside the sealing cover, two moving blocks are symmetrically arranged on the pushing screw rod, two push plates are symmetrically arranged on the left side and the right side of each moving block, and fixing plates are symmetrically arranged on the left side and the right side of each push plate. According to the overheat protection system for the lithium ion power battery, the fixing plate is arranged, so that the sealing cover can be conveniently fixed; the push plate is arranged, so that the fixed plate can be conveniently pushed to move; the push plate can be driven to move conveniently by arranging the moving block and the connecting rod; the threaded push rod is arranged, so that the moving block can be pushed to move conveniently; through setting up the push rod, can be convenient for dismantle fast of window to finally improve its efficiency of overhauing and clearing up.

Description

Lithium ion power battery overheating protection system

Technical Field

The invention relates to the technical field of lithium batteries, in particular to an overheating protection system for a lithium ion power battery.

Background

The lithium ion power battery is a new type high-energy battery developed successfully in 20 th century, and is composed of negative electrode graphite and positive electrode ₄LiFePOAnd the like. The lithium power battery has the advantages of high energy, high battery voltage, wide working temperature range, long storage life and the like, is widely applied to military and civil small-sized electrical appliances, such as mobile phones, portable computers, video cameras, cameras and the like, and partially replaces the traditional battery, and generally has two shapes: cylindrical and rectangular. The inside of the battery can adoptThe laminated structure or spiral winding structure is formed by spacing a polyethylene film isolating material with very fine and strong permeability between a positive electrode and a negative electrode, the positive electrode comprises a lithium collector taking lithium iron phosphate as an active component and a current collector consisting of an aluminum film, the negative electrode comprises a lithium collector taking a flaky carbon material as an active component and a current collector consisting of a copper film, and an organic electrolyte solution is filled in the battery. In addition, a safety valve and a PTC element are also arranged, so that the battery is protected from being damaged when in abnormal state and output short circuit, a high-capacity lithium battery is tried in the electric automobile, the voltage of a single lithium battery is 3.0-4.0V, and the capacity cannot be infinite, so that the single lithium battery is often subjected to series and parallel connection treatment to meet the requirements of different occasions, the single lithium battery becomes one of main power supplies of the electric automobile in the 21 st century, and the single lithium battery can be applied to artificial satellites, aerospace and energy storage; lithium power battery can produce a large amount of heats at the in-process that uses, so just need to align and dispel the heat the cooling, but current lithium power battery overheat protection device has the installation at the in-process that uses, dismantle the shortcoming of inefficiency, thereby can influence the efficiency of overhauing when needs overhaul its inside, the condition that the foreign matter blockked up can appear in lithium power battery overheat protection device's air intake filter screen long-term use in-process simultaneously, and then influence lithium power battery's heat dissipation, so need regularly clear up it, but it is unable dismantlement or dismantlement trouble of current lithium power battery overheat protection device's air intake filter screen, finally can make the cleaning efficiency low.

Disclosure of Invention

The invention mainly aims to provide an overheat protection system for a lithium ion power battery, which can effectively solve the problems in the background technology.

In order to achieve the purpose, the invention adopts the technical scheme that:

the utility model provides a lithium ion power battery overheat protection system, includes the device shell, the internally mounted of device shell has sealed lid, the left end of device shell is provided with the window, the inside of device shell is provided with the push rod in the one side that is located the window, the inside of device shell is provided with the lithium cell in the below that is located sealed lid, the right-hand member of device shell is provided with updraft ventilator, the inside of sealed lid is provided with and impels the screw rod, two movable blocks are installed to the last symmetry of impelling the screw rod, the left and right sides symmetry of movable block is provided with two push pedals, the left and right sides symmetry of push pedal is provided with the fixed plate.

Preferably, the air intake has been seted up to the left end of device shell, the fixed orifices has been seted up on one side inner wall of air intake, the inside of device shell has seted up spacing chamber on being located the inner wall of fixed orifices, the pole hole has been seted up on the inner wall in spacing chamber, the pole hole runs through the rear end and the spacing chamber of device shell, two installation disassembly holes have been seted up to the both ends symmetry around the device shell, the installation disassembly hole runs through the outer end and the inner of device shell, six draw-in grooves have been seted up to the symmetry on the inner wall at the both ends about the device shell.

Preferably, the cavity has been seted up to the inside of sealed lid, two spacing grooves have been seted up to the symmetry on the inner wall of both sides around the cavity, both ends run through with the cavity around the sealed lid in the spacing groove, six perforation have been seted up to both ends symmetry about the sealed lid, perforation runs through both ends and cavity about the sealed lid, four containing grooves have been seted up to bilateral symmetry around lieing in the perforation on the inner wall at both ends about the cavity four containing groove all is provided with shrink spring in the inside of containing the groove, through set up shrink spring in sealed lid, can be convenient for shrink the fixed column on the fixed plate in sealed lid.

Preferably, the one end of window is provided with the hinge, the window passes through the hinge and installs in the air inlet that device shell left end was seted up, the inboard of window is provided with the filter screen, a number through-hole has been seted up to the other end of window, the inside of window has been seted up on the inner wall that lies in a number through-hole and has been accomodate the chamber, the inside of accomodating the chamber is provided with fixed spring, the inside of accomodating the chamber is provided with the bottom plate in the outer end that lies in fixed spring, the outer end of bottom plate is provided with the fixed block, the fixed block card is gone into in the fixed orifices, through set up fixed block and fixed spring in the window, and the quick installation of window that can be convenient for is fixed.

Preferably, be provided with the limiting plate on the push rod lieing in spacing intracavity, the outer end of push rod is provided with the board of pressing in the rear that lies in the device shell, through setting up the push rod, can be convenient for dismantle fast of window.

Preferably, the propelling screw is arranged in the cavity, two limiting blocks are symmetrically arranged at the front end and the rear end of the propelling screw, the limiting blocks are symmetrically arranged in two limiting grooves, two inner hexagonal grooves are formed in the outer ends of the limiting blocks, and the propelling moving block can be conveniently pushed to move by arranging the thread push rod.

Preferably, a threaded hole is formed in each of the two moving blocks, the two moving blocks are symmetrically installed on the propelling screw rod through the threaded holes formed in the two moving blocks, two first rotating grooves are symmetrically formed in the left end and the right end of each of the two moving blocks, a first shaft is arranged in each first rotating groove, a connecting rod is connected to each first shaft, two shaft holes are symmetrically formed in each connecting rod, the connecting rod is installed on each first shaft through the shaft holes in the inner side, and the push plate can be driven to move conveniently by arranging the moving blocks and the connecting rod.

Preferably, two the push pedal symmetry sets up in the cavity, two the inner of push pedal all is provided with a connecting block, two the equal symmetry in the inner of connecting block has seted up No. two turn grooves, four No. two turn grooves all are provided with a No. two axle, through setting up the push pedal, can be convenient for promote the fixed plate and remove.

Preferably, two the fixed plate symmetry sets up in the cavity, the outer end of fixed plate evenly is provided with three fixed column, through setting up the fixed plate, can be convenient for sealed fixed of lid.

Compared with the prior art, the invention has the following beneficial effects:

the fixing plate is arranged, so that the sealing cover can be fixed conveniently; the push plate is arranged, so that the fixed plate can be conveniently pushed to move; the push plate can be driven to move conveniently by arranging the moving block and the connecting rod; the threaded push rod is arranged, so that the moving block can be pushed to move conveniently; the window is internally provided with the fixing block and the fixing spring, so that the window can be conveniently and quickly installed and fixed; the push rod is arranged, so that the window can be conveniently and quickly detached; through set up the shrink spring in sealed lid, can be convenient for shrink sealed lid with the fixed column on the fixed plate in to finally improve its efficiency of overhauing and clearing up.

Drawings

Fig. 1 is a schematic diagram of the overall structure of an overheat protection system for a lithium ion power battery according to the present invention;

FIG. 2 is a schematic structural diagram of a window of an overheat protection system for a lithium-ion power battery according to the present invention;

FIG. 3 is a schematic diagram of the internal structure of a sealing cover of the overheat protection system for a lithium ion power battery according to the present invention;

FIG. 4 is a schematic structural diagram of a push rod of an overheat protection system for a lithium-ion power battery according to the present invention;

FIG. 5 is an enlarged view taken at A of FIG. 3;

fig. 6 is an enlarged view of fig. 4 at B.

In the figure: 1. a device housing; 2. a sealing cover; 3. a window; 4. a push rod; 5. a lithium battery; 6. an air draft device; 7. a screw is advanced; 8. a moving block; 9. pushing the plate; 10. a fixing plate; 11. an air inlet; 12. mounting and dismounting holes; 13. a fixing hole; 14. a limiting cavity; 15. a rod hole; 16. a cavity; 17. a limiting groove; 18. perforating; 19. a receiving groove; 20. a retraction spring; 21. a filter screen; 22. a hinge; 23. a first through hole; 24. a receiving cavity; 25. fixing the spring; 26. a base plate; 27. a fixed block; 28. pressing a plate; 29. a limiting plate; 30. a limiting block; 31. an inner hexagonal groove; 32. a threaded hole; 33. a first rotary groove; 34. a first shaft; 35. a connecting rod; 36. a shaft hole; 37. connecting blocks; 38. turning a groove II; 39. a second shaft; 40. fixing the column; 41. a clamping groove.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-6, an overheat protection system for a lithium ion power battery comprises a device shell 1, a sealing cover 2 is installed inside the device shell 1, a window 3 is arranged at the left end of the device shell 1, a push rod 4 is arranged inside the device shell 1 at one side of the window 3, a lithium battery 5 is arranged inside the device shell 1 below the sealing cover 2, an air draft device 6 is arranged at the right end of the device shell 1, a push screw 7 is arranged inside the sealing cover 2, two moving blocks 8 are symmetrically installed on the push screw 7, two push plates 9 are symmetrically arranged at the left side and the right side of each moving block 8, and fixing plates 10 are symmetrically arranged at the left side and the right side of each push plate 9;

an air inlet 11 is formed in the left end of a device shell 1, a fixing hole 13 is formed in the inner wall of one side of the air inlet 11, a limiting cavity 14 is formed in the inner wall of the fixing hole 13 in the device shell 1, a rod hole 15 is formed in the inner wall of the limiting cavity 14, the rear end of the device shell 1 is penetrated through the limiting cavity 14 through the rod hole 15, two mounting and dismounting holes 12 are symmetrically formed in the front end and the rear end of the device shell 1, the outer end and the inner end of the device shell 1 are penetrated through the mounting and dismounting holes 12, and six clamping grooves 41 are symmetrically formed in the inner walls of the left end and the right end of the device shell 1; a cavity 16 is formed in the sealing cover 2, two limiting grooves 17 are symmetrically formed in the inner walls of the front side and the rear side of the cavity 16, the front end and the rear end of the sealing cover 2 are penetrated through the limiting grooves 17 and the cavity 16 by the limiting grooves 17, six through holes 18 are symmetrically formed in the left end and the right end of the sealing cover 2, the left end and the right end of the sealing cover 2 are penetrated through the cavity 16 by the through holes 18, four accommodating grooves 19 are symmetrically formed in the inner walls of the left end and the right end of the cavity 16 at the front side and the rear side of the through holes 18, and contraction springs 20 are arranged in the four accommodating grooves 19; one end of the window 3 is provided with a hinge 22, the window 3 is installed in an air inlet 11 formed in the left end of the device shell 1 through the hinge 22, the inner side of the window 3 is provided with a filter screen 21, the other end of the window 3 is provided with a first through hole 23, the inner part of the window 3 is provided with a containing cavity 24 on the inner wall of the first through hole 23, the inside of the containing cavity 24 is provided with a fixed spring 25, the inside of the containing cavity 24 is provided with a bottom plate 26 at the outer end of the fixed spring 25, the outer end of the bottom plate 26 is provided with a fixed block 27, and the fixed block 27 is clamped in the fixed hole 13; a limit plate 29 is arranged in the limit cavity 14 on the push rod 4, and a press plate 28 is arranged at the rear part of the device shell 1 at the outer end of the push rod 4; the propelling screw 7 is arranged in the cavity 16, two limiting blocks 30 are symmetrically arranged at the front end and the rear end of the propelling screw 7, the two limiting blocks 30 are symmetrically arranged in the two limiting grooves 17, and the outer ends of the two limiting blocks 30 are both provided with an inner hexagonal groove 31; two moving blocks 8 are respectively provided with a threaded hole 32, the two moving blocks 8 are symmetrically arranged on the propelling screw 7 through the threaded holes 32 formed in the two moving blocks 8, the left end and the right end of each of the two moving blocks 8 are respectively and symmetrically provided with two first rotating grooves 33, a first shaft 34 is arranged in each of the four first rotating grooves 33, each of the four first shafts 34 is connected with a connecting rod 35, each of the four connecting rods 35 is symmetrically provided with two shaft holes 36, and the connecting rod 35 is arranged on the first shaft 34 through the shaft hole 36 on the inner side; the two push plates 9 are symmetrically arranged in the cavity 16, the inner ends of the two push plates 9 are respectively provided with a connecting block 37, the inner ends of the two connecting blocks 37 are respectively symmetrically provided with two second rotary grooves 38, and a second shaft 39 is respectively arranged in the four second rotary grooves 38; two fixed plates 10 are symmetrically arranged in the cavity 16, and three fixed columns 40 are uniformly arranged at the outer ends of the fixed plates 10.

It should be noted that, in the process of using the overheat protection system for the lithium ion power battery, when the inner wall of the device housing 1 needs to be overhauled, the sealing cover 2 is firstly removed from the device housing 1, the removal method is that an inner hexagonal wrench is inserted into the mounting and removing hole 12 until the inner hexagonal wrench is inserted into an inner hexagonal groove 31 formed at the outer end of the limiting block 30, then the limiting block 30 is rotated, the limiting block 30 rotates to drive the pushing screw 7 to rotate, the pushing screw 7 rotates to drive the two moving blocks 8 mounted thereon to be away from each other, the two moving blocks 8 are away from each other to enable the connecting rod 35 to rotate around the second shaft 39 in the second rotating groove 38, so that the connecting block 37 and the push plate 9 are pulled towards the center of the cavity 16, and at this time, the fixing plate 10 loses the limit of the push plate 9, and is pushed towards the cavity 16 by the retraction spring 20 in the accommodating groove 19, the fixed plate 10 is pushed inwards to drive the fixed column 40 to move, so that the fixed column 40 is separated from the clamping groove 41, then the sealing cover 2 can be detached from the device shell 1, after the maintenance is finished, the sealing cover 2 is installed in the device shell 1, the installation method comprises the steps of firstly placing the sealing cover 2 into the device shell 1, then inserting an inner hexagonal wrench into the installation and detachment hole 12 until the inner hexagonal wrench is inserted into an inner hexagonal groove 31 formed in the outer end of the limiting block 30, then reversely rotating the limiting block 30, driving the pushing screw 7 to rotate by the limiting block 30, driving the two moving blocks 8 installed on the pushing screw 7 to approach each other by the rotation of the pushing screw 7, enabling the connecting rod 35 to rotate inwards around a second shaft 39 in a second rotating groove 38 by the mutual approach of the two moving blocks 8, and further pushing the connecting block 37 and the pushing plate 9 to the fixed plate 10, then, the fixing posts 40 at the outer end of the fixing plate 10 are pushed out from the through holes 18 until the fixing posts 40 are clamped into the clamping grooves 41, and the installation of the sealing cover 2 is completed; when the filter screen 21 needs to be cleaned, the pressing plate 28 can be pressed inwards, so that the push rod 4 can move inwards, the push rod 4 can move inwards while moving inwards to push the fixing block 27, finally, the fixing block 27 can be pushed out of the fixing hole 13, at the moment, the window 3 can be opened to clean the filter screen 21, after the cleaning is finished, the window 3 can be pushed towards the device shell 1, when the fixing block 27 is in contact with the device shell 1, the fixing block 27 can be extruded and contracted into the first through hole 23 and the accommodating cavity 24 by the device shell 1, when the fixing block 27 moves to the position of the fixing hole 13, the fixing block 27 can be pushed outwards by the fixing spring 25 in the accommodating cavity 24, and finally, the fixing block can be clamped into the fixing hole 13, so that the disassembly, the cleaning and the installation of the filter screen 21 are completed.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a lithium ion power battery overheat protection system which characterized in that: the device comprises a device shell (1), wherein a sealing cover (2) is installed inside the device shell (1), a window (3) is arranged at the left end of the device shell (1), a push rod (4) is arranged inside the device shell (1) on one side of the window (3), a lithium battery (5) is arranged inside the device shell (1) below the sealing cover (2), an air draft device (6) is arranged at the right end of the device shell (1), a pushing screw (7) is arranged inside the sealing cover (2), two moving blocks (8) are symmetrically installed on the pushing screw (7), two push plates (9) are symmetrically arranged on the left side and the right side of each moving block (8), and fixing plates (10) are symmetrically arranged on the left side and the right side of each push plate (9); a cavity (16) is formed in the sealing cover (2), two limiting grooves (17) are symmetrically formed in the inner walls of the front side and the rear side of the cavity (16), the front end and the rear end of the sealing cover (2) are penetrated through the limiting grooves (17) and the cavity (16), six through holes (18) are symmetrically formed in the left end and the right end of the sealing cover (2), the left end and the right end of the sealing cover (2) are penetrated through the cavity (16) by the through holes (18), four accommodating grooves (19) are symmetrically formed in the inner walls of the left end and the right end of the cavity (16) at the front side and the rear side of the through holes (18), and contraction springs (20) are arranged in the four accommodating grooves (19); the two moving blocks (8) are respectively provided with a threaded hole (32), the two moving blocks (8) are symmetrically arranged on the pushing screw (7) through the threaded holes (32) formed in the two moving blocks, the left end and the right end of each of the two moving blocks (8) are respectively symmetrically provided with two first rotating grooves (33), a first shaft (34) is arranged in each of the four first rotating grooves (33), the four first shafts (34) are respectively connected with a connecting rod (35), the four connecting rods (35) are respectively symmetrically provided with two shaft holes (36), and the connecting rods (35) are arranged on the first shafts (34) through the shaft holes (36) on the inner sides; the two push plates (9) are symmetrically arranged in the cavity (16), the inner ends of the two push plates (9) are respectively provided with a connecting block (37), the inner ends of the two connecting blocks (37) are respectively and symmetrically provided with two second rotating grooves (38), and a second shaft (39) is respectively arranged in the four second rotating grooves (38); the two fixing plates (10) are symmetrically arranged in the cavity (16), and three fixing columns (40) are uniformly arranged at the outer ends of the fixing plates (10); the pushing screw (7) rotates to drive the two moving blocks (8) to move away from each other, and the mutual distance between the two moving blocks (8) enables the connecting rod (35) to rotate around the second shaft (39) in the second rotary groove (38), thereby also pulling the connecting block (37) and the push plate (9) towards the center of the cavity (16), and at the moment, the fixing plate (10) loses the limit of the push plate (9), which is urged into the cavity (16) by the retraction spring (20) in the receiving groove (19), the fixing column (40) is driven to move by the inward pushing of the fixing plate (10), so that the fixing column (40) is separated from the clamping groove (41), the sealing cap (2) can then be removed from the device housing (1).

2. The lithium ion power battery overheating protection system according to claim 1, wherein: air intake (11) have been seted up to the left end of device shell (1), fixed orifices (13) have been seted up on one side inner wall of air intake (11), spacing chamber (14) have been seted up to the inside of device shell (1) on being located the inner wall of fixed orifices (13), pole hole (15) have been seted up on the inner wall of spacing chamber (14), pole hole (15) run through the rear end and spacing chamber (14) of device shell (1), two installation dismantlement holes (12) have been seted up to the front and back both ends symmetry of device shell (1), six draw-in grooves (41) have been seted up to the symmetry on the inner wall of the left and right sides both ends of device shell (1) with the outer end and the inner of device shell (1) run through in installation dismantlement hole (12).

3. The lithium ion power battery overheating protection system according to claim 1, wherein: the one end of window (3) is provided with hinge (22), install in air intake (11) that device shell (1) left end was seted up window (3) through hinge (22), the inboard of window (3) is provided with filter screen (21), one number through-hole (23) have been seted up to the other end of window (3), the inside of window (3) has been seted up on the inner wall that is located one number through-hole (23) and has been accomodate chamber (24), the inside of accomodating chamber (24) is provided with fixed spring (25), the inside of accomodating chamber (24) is provided with bottom plate (26) in the outer end that is located fixed spring (25), the outer end of bottom plate (26) is provided with fixed block (27), fixed block (27) card is gone into in fixed hole (13).

4. The lithium ion power battery overheating protection system according to claim 1, wherein: a limiting plate (29) is arranged in the limiting cavity (14) on the push rod (4), and a pressing plate (28) is arranged at the rear part of the device shell (1) at the outer end of the push rod (4).

5. The lithium ion power battery overheating protection system according to claim 1, wherein: impel screw rod (7) and set up in cavity (16), both ends symmetry is provided with two stopper (30) around impel screw rod (7), two stopper (30) symmetry sets up in two spacing grooves (17), two an interior hexagonal groove (31) have all been seted up to the outer end of stopper (30).